WebView.java revision 38bc731875fec30d1a39f50cf3bf7234656f6698
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.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.ComponentCallbacks2; 24import android.content.Context; 25import android.content.DialogInterface; 26import android.content.DialogInterface.OnCancelListener; 27import android.content.Intent; 28import android.content.IntentFilter; 29import android.content.pm.PackageInfo; 30import android.content.pm.PackageManager; 31import android.content.res.Configuration; 32import android.database.DataSetObserver; 33import android.graphics.Bitmap; 34import android.graphics.BitmapFactory; 35import android.graphics.BitmapShader; 36import android.graphics.Canvas; 37import android.graphics.Color; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.RegionIterator; 47import android.graphics.Shader; 48import android.graphics.drawable.Drawable; 49import android.net.Proxy; 50import android.net.ProxyProperties; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Looper; 57import android.os.Message; 58import android.os.StrictMode; 59import android.provider.Settings; 60import android.speech.tts.TextToSpeech; 61import android.util.AttributeSet; 62import android.util.EventLog; 63import android.util.Log; 64import android.view.Gravity; 65import android.view.HapticFeedbackConstants; 66import android.view.HardwareCanvas; 67import android.view.InputDevice; 68import android.view.KeyCharacterMap; 69import android.view.KeyEvent; 70import android.view.LayoutInflater; 71import android.view.MotionEvent; 72import android.view.ScaleGestureDetector; 73import android.view.SoundEffectConstants; 74import android.view.VelocityTracker; 75import android.view.View; 76import android.view.ViewConfiguration; 77import android.view.ViewGroup; 78import android.view.ViewParent; 79import android.view.ViewTreeObserver; 80import android.view.accessibility.AccessibilityEvent; 81import android.view.accessibility.AccessibilityManager; 82import android.view.accessibility.AccessibilityNodeInfo; 83import android.view.inputmethod.EditorInfo; 84import android.view.inputmethod.InputConnection; 85import android.view.inputmethod.InputMethodManager; 86import android.webkit.WebTextView.AutoCompleteAdapter; 87import android.webkit.WebViewCore.DrawData; 88import android.webkit.WebViewCore.EventHub; 89import android.webkit.WebViewCore.TouchEventData; 90import android.webkit.WebViewCore.TouchHighlightData; 91import android.widget.AbsoluteLayout; 92import android.widget.Adapter; 93import android.widget.AdapterView; 94import android.widget.AdapterView.OnItemClickListener; 95import android.widget.ArrayAdapter; 96import android.widget.CheckedTextView; 97import android.widget.LinearLayout; 98import android.widget.ListView; 99import android.widget.OverScroller; 100import android.widget.Toast; 101 102import junit.framework.Assert; 103 104import java.io.File; 105import java.io.FileInputStream; 106import java.io.FileNotFoundException; 107import java.io.FileOutputStream; 108import java.io.IOException; 109import java.io.InputStream; 110import java.io.OutputStream; 111import java.net.URLDecoder; 112import java.util.ArrayList; 113import java.util.HashMap; 114import java.util.HashSet; 115import java.util.List; 116import java.util.Map; 117import java.util.Set; 118import java.util.Vector; 119import java.util.regex.Matcher; 120import java.util.regex.Pattern; 121 122import javax.microedition.khronos.egl.EGL10; 123import javax.microedition.khronos.egl.EGLContext; 124import javax.microedition.khronos.egl.EGLDisplay; 125import static javax.microedition.khronos.egl.EGL10.*; 126 127/** 128 * <p>A View that displays web pages. This class is the basis upon which you 129 * can roll your own web browser or simply display some online content within your Activity. 130 * It uses the WebKit rendering engine to display 131 * web pages and includes methods to navigate forward and backward 132 * through a history, zoom in and out, perform text searches and more.</p> 133 * <p>To enable the built-in zoom, set 134 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 135 * (introduced in API version 3). 136 * <p>Note that, in order for your Activity to access the Internet and load web pages 137 * in a WebView, you must add the {@code INTERNET} permissions to your 138 * Android Manifest file:</p> 139 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 140 * 141 * <p>This must be a child of the <a 142 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 143 * element.</p> 144 * 145 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 146 * tutorial</a>.</p> 147 * 148 * <h3>Basic usage</h3> 149 * 150 * <p>By default, a WebView provides no browser-like widgets, does not 151 * enable JavaScript and web page errors are ignored. If your goal is only 152 * to display some HTML as a part of your UI, this is probably fine; 153 * the user won't need to interact with the web page beyond reading 154 * it, and the web page won't need to interact with the user. If you 155 * actually want a full-blown web browser, then you probably want to 156 * invoke the Browser application with a URL Intent rather than show it 157 * with a WebView. For example: 158 * <pre> 159 * Uri uri = Uri.parse("http://www.example.com"); 160 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 161 * startActivity(intent); 162 * </pre> 163 * <p>See {@link android.content.Intent} for more information.</p> 164 * 165 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 166 * or set the entire Activity window as a WebView during {@link 167 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 168 * <pre class="prettyprint"> 169 * WebView webview = new WebView(this); 170 * setContentView(webview); 171 * </pre> 172 * 173 * <p>Then load the desired web page:</p> 174 * <pre> 175 * // Simplest usage: note that an exception will NOT be thrown 176 * // if there is an error loading this page (see below). 177 * webview.loadUrl("http://slashdot.org/"); 178 * 179 * // OR, you can also load from an HTML string: 180 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 181 * webview.loadData(summary, "text/html", null); 182 * // ... although note that there are restrictions on what this HTML can do. 183 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 184 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 185 * </pre> 186 * 187 * <p>A WebView has several customization points where you can add your 188 * own behavior. These are:</p> 189 * 190 * <ul> 191 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 192 * This class is called when something that might impact a 193 * browser UI happens, for instance, progress updates and 194 * JavaScript alerts are sent here (see <a 195 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 196 * </li> 197 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 198 * It will be called when things happen that impact the 199 * rendering of the content, eg, errors or form submissions. You 200 * can also intercept URL loading here (via {@link 201 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 202 * shouldOverrideUrlLoading()}).</li> 203 * <li>Modifying the {@link android.webkit.WebSettings}, such as 204 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 205 * setJavaScriptEnabled()}. </li> 206 * <li>Injecting Java objects into the WebView using the 207 * {@link android.webkit.WebView#addJavascriptInterface} method. This 208 * method allows you to inject Java objects into a page's JavaScript 209 * context, so that they can be accessed by JavaScript in the page.</li> 210 * </ul> 211 * 212 * <p>Here's a more complicated example, showing error handling, 213 * settings, and progress notification:</p> 214 * 215 * <pre class="prettyprint"> 216 * // Let's display the progress in the activity title bar, like the 217 * // browser app does. 218 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 219 * 220 * webview.getSettings().setJavaScriptEnabled(true); 221 * 222 * final Activity activity = this; 223 * webview.setWebChromeClient(new WebChromeClient() { 224 * public void onProgressChanged(WebView view, int progress) { 225 * // Activities and WebViews measure progress with different scales. 226 * // The progress meter will automatically disappear when we reach 100% 227 * activity.setProgress(progress * 1000); 228 * } 229 * }); 230 * webview.setWebViewClient(new WebViewClient() { 231 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 232 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 233 * } 234 * }); 235 * 236 * webview.loadUrl("http://slashdot.org/"); 237 * </pre> 238 * 239 * <h3>Cookie and window management</h3> 240 * 241 * <p>For obvious security reasons, your application has its own 242 * cache, cookie store etc.—it does not share the Browser 243 * application's data. Cookies are managed on a separate thread, so 244 * operations like index building don't block the UI 245 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 246 * if you want to use cookies in your application. 247 * </p> 248 * 249 * <p>By default, requests by the HTML to open new windows are 250 * ignored. This is true whether they be opened by JavaScript or by 251 * the target attribute on a link. You can customize your 252 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 253 * and render them in whatever manner you want.</p> 254 * 255 * <p>The standard behavior for an Activity is to be destroyed and 256 * recreated when the device orientation or any other configuration changes. This will cause 257 * the WebView to reload the current page. If you don't want that, you 258 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 259 * changes, and then just leave the WebView alone. It'll automatically 260 * re-orient itself as appropriate. Read <a 261 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 262 * more information about how to handle configuration changes during runtime.</p> 263 * 264 * 265 * <h3>Building web pages to support different screen densities</h3> 266 * 267 * <p>The screen density of a device is based on the screen resolution. A screen with low density 268 * has fewer available pixels per inch, where a screen with high density 269 * has more — sometimes significantly more — pixels per inch. The density of a 270 * screen is important because, other things being equal, a UI element (such as a button) whose 271 * height and width are defined in terms of screen pixels will appear larger on the lower density 272 * screen and smaller on the higher density screen. 273 * For simplicity, Android collapses all actual screen densities into three generalized densities: 274 * high, medium, and low.</p> 275 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 276 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 277 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 278 * are bigger). 279 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 280 * you (as a web developer) target screens with different screen densities.</p> 281 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 282 * <ul> 283 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 284 * default scaling factor used for the current device. For example, if the value of {@code 285 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 286 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 287 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 288 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 289 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 290 * (discussed below), then you can stop this default scaling behavior.</li> 291 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 292 * densities for which this style sheet is to be used. The corresponding value should be either 293 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 294 * density, or high density screens, respectively. For example: 295 * <pre> 296 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 297 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 298 * which is the high density pixel ratio.</p> 299 * </li> 300 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 301 * this to specify the target density for which the web page is designed, using the following 302 * values: 303 * <ul> 304 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 305 * occurs.</li> 306 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 307 * as appropriate.</li> 308 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 309 * low density screens scale down. This is also the default behavior.</li> 310 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 311 * as appropriate.</li> 312 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 313 * values are 70-400).</li> 314 * </ul> 315 * <p>Here's an example meta tag to specify the target density:</p> 316 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 317 * </ul> 318 * <p>If you want to modify your web page for different densities, by using the {@code 319 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 320 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 321 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 322 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 323 * 324 * 325 */ 326@Widget 327public class WebView extends AbsoluteLayout 328 implements ViewTreeObserver.OnGlobalFocusChangeListener, 329 ViewGroup.OnHierarchyChangeListener { 330 331 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 332 public void onGlobalLayout() { 333 if (isShown()) { 334 setGLRectViewport(); 335 } 336 } 337 } 338 339 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 340 public void onScrollChanged() { 341 if (isShown()) { 342 setGLRectViewport(); 343 } 344 } 345 } 346 347 // The listener to capture global layout change event. 348 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 349 350 // The listener to capture scroll event. 351 private InnerScrollChangedListener mScrollChangedListener = null; 352 353 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 354 // the screen all-the-time. Good for profiling our drawing code 355 static private final boolean AUTO_REDRAW_HACK = false; 356 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 357 private boolean mAutoRedraw; 358 359 // Reference to the AlertDialog displayed by InvokeListBox. 360 // It's used to dismiss the dialog in destroy if not done before. 361 private AlertDialog mListBoxDialog = null; 362 363 static final String LOGTAG = "webview"; 364 365 private ZoomManager mZoomManager; 366 367 private final Rect mGLRectViewport = new Rect(); 368 private final Rect mViewRectViewport = new Rect(); 369 private final RectF mVisibleContentRect = new RectF(); 370 private boolean mGLViewportEmpty = false; 371 372 /** 373 * Transportation object for returning WebView across thread boundaries. 374 */ 375 public class WebViewTransport { 376 private WebView mWebview; 377 378 /** 379 * Set the WebView to the transportation object. 380 * @param webview The WebView to transport. 381 */ 382 public synchronized void setWebView(WebView webview) { 383 mWebview = webview; 384 } 385 386 /** 387 * Return the WebView object. 388 * @return WebView The transported WebView object. 389 */ 390 public synchronized WebView getWebView() { 391 return mWebview; 392 } 393 } 394 395 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 396 private static OnTrimMemoryListener sInstance = null; 397 398 static void init(Context c) { 399 if (sInstance == null) { 400 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 401 } 402 } 403 404 private OnTrimMemoryListener(Context c) { 405 c.registerComponentCallbacks(this); 406 } 407 408 @Override 409 public void onConfigurationChanged(Configuration newConfig) { 410 // Ignore 411 } 412 413 @Override 414 public void onLowMemory() { 415 // Ignore 416 } 417 418 @Override 419 public void onTrimMemory(int level) { 420 if (DebugFlags.WEB_VIEW) { 421 Log.d("WebView", "onTrimMemory: " + level); 422 } 423 WebView.nativeOnTrimMemory(level); 424 } 425 426 } 427 428 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 429 private final CallbackProxy mCallbackProxy; 430 431 private final WebViewDatabase mDatabase; 432 433 // SSL certificate for the main top-level page (if secure) 434 private SslCertificate mCertificate; 435 436 // Native WebView pointer that is 0 until the native object has been 437 // created. 438 private int mNativeClass; 439 // This would be final but it needs to be set to null when the WebView is 440 // destroyed. 441 private WebViewCore mWebViewCore; 442 // Handler for dispatching UI messages. 443 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 444 private WebTextView mWebTextView; 445 // Used to ignore changes to webkit text that arrives to the UI side after 446 // more key events. 447 private int mTextGeneration; 448 449 /* package */ void incrementTextGeneration() { mTextGeneration++; } 450 451 // Used by WebViewCore to create child views. 452 /* package */ final ViewManager mViewManager; 453 454 // Used to display in full screen mode 455 PluginFullScreenHolder mFullScreenHolder; 456 457 /** 458 * Position of the last touch event in pixels. 459 * Use integer to prevent loss of dragging delta calculation accuracy; 460 * which was done in float and converted to integer, and resulted in gradual 461 * and compounding touch position and view dragging mismatch. 462 */ 463 private int mLastTouchX; 464 private int mLastTouchY; 465 private int mStartTouchX; 466 private int mStartTouchY; 467 private float mAverageAngle; 468 469 /** 470 * Time of the last touch event. 471 */ 472 private long mLastTouchTime; 473 474 /** 475 * Time of the last time sending touch event to WebViewCore 476 */ 477 private long mLastSentTouchTime; 478 479 /** 480 * The minimum elapsed time before sending another ACTION_MOVE event to 481 * WebViewCore. This really should be tuned for each type of the devices. 482 * For example in Google Map api test case, it takes Dream device at least 483 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 484 * triggering the layout and drawing the picture. While the same process 485 * takes 60+ms on the current high speed device. If we make 486 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 487 * to WebViewCore queue and the real layout and draw events will be pushed 488 * to further, which slows down the refresh rate. Choose 50 to favor the 489 * current high speed devices. For Dream like devices, 100 is a better 490 * choice. Maybe make this in the buildspec later. 491 * (Update 12/14/2010: changed to 0 since current device should be able to 492 * handle the raw events and Map team voted to have the raw events too. 493 */ 494 private static final int TOUCH_SENT_INTERVAL = 0; 495 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 496 497 /** 498 * Helper class to get velocity for fling 499 */ 500 VelocityTracker mVelocityTracker; 501 private int mMaximumFling; 502 private float mLastVelocity; 503 private float mLastVelX; 504 private float mLastVelY; 505 506 // The id of the native layer being scrolled. 507 private int mScrollingLayer; 508 private Rect mScrollingLayerRect = new Rect(); 509 510 // only trigger accelerated fling if the new velocity is at least 511 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 512 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 513 514 /** 515 * Touch mode 516 */ 517 private int mTouchMode = TOUCH_DONE_MODE; 518 private static final int TOUCH_INIT_MODE = 1; 519 private static final int TOUCH_DRAG_START_MODE = 2; 520 private static final int TOUCH_DRAG_MODE = 3; 521 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 522 private static final int TOUCH_SHORTPRESS_MODE = 5; 523 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 524 private static final int TOUCH_DONE_MODE = 7; 525 private static final int TOUCH_PINCH_DRAG = 8; 526 private static final int TOUCH_DRAG_LAYER_MODE = 9; 527 528 // Whether to forward the touch events to WebCore 529 // Can only be set by WebKit via JNI. 530 private boolean mForwardTouchEvents = false; 531 532 // Whether to prevent default during touch. The initial value depends on 533 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 534 // for touch down. Otherwise UI will wait for the answer of the first 535 // confirmed move before taking over the control. 536 private static final int PREVENT_DEFAULT_NO = 0; 537 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 538 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 539 private static final int PREVENT_DEFAULT_YES = 3; 540 private static final int PREVENT_DEFAULT_IGNORE = 4; 541 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 542 543 // true when the touch movement exceeds the slop 544 private boolean mConfirmMove; 545 546 // if true, touch events will be first processed by WebCore, if prevent 547 // default is not set, the UI will continue handle them. 548 private boolean mDeferTouchProcess; 549 550 // to avoid interfering with the current touch events, track them 551 // separately. Currently no snapping or fling in the deferred process mode 552 private int mDeferTouchMode = TOUCH_DONE_MODE; 553 private float mLastDeferTouchX; 554 private float mLastDeferTouchY; 555 556 // To keep track of whether the current drag was initiated by a WebTextView, 557 // so that we know not to hide the cursor 558 boolean mDragFromTextInput; 559 560 // Whether or not to draw the cursor ring. 561 private boolean mDrawCursorRing = true; 562 563 // true if onPause has been called (and not onResume) 564 private boolean mIsPaused; 565 566 private HitTestResult mInitialHitTestResult; 567 568 /** 569 * Customizable constant 570 */ 571 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 572 private int mTouchSlopSquare; 573 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 574 private int mDoubleTapSlopSquare; 575 // pre-computed density adjusted navigation slop 576 private int mNavSlop; 577 // This should be ViewConfiguration.getTapTimeout() 578 // But system time out is 100ms, which is too short for the browser. 579 // In the browser, if it switches out of tap too soon, jump tap won't work. 580 // In addition, a double tap on a trackpad will always have a duration of 581 // 300ms, so this value must be at least that (otherwise we will timeout the 582 // first tap and convert it to a long press). 583 private static final int TAP_TIMEOUT = 300; 584 // This should be ViewConfiguration.getLongPressTimeout() 585 // But system time out is 500ms, which is too short for the browser. 586 // With a short timeout, it's difficult to treat trigger a short press. 587 private static final int LONG_PRESS_TIMEOUT = 1000; 588 // needed to avoid flinging after a pause of no movement 589 private static final int MIN_FLING_TIME = 250; 590 // draw unfiltered after drag is held without movement 591 private static final int MOTIONLESS_TIME = 100; 592 // The amount of content to overlap between two screens when going through 593 // pages with the space bar, in pixels. 594 private static final int PAGE_SCROLL_OVERLAP = 24; 595 596 /** 597 * These prevent calling requestLayout if either dimension is fixed. This 598 * depends on the layout parameters and the measure specs. 599 */ 600 boolean mWidthCanMeasure; 601 boolean mHeightCanMeasure; 602 603 // Remember the last dimensions we sent to the native side so we can avoid 604 // sending the same dimensions more than once. 605 int mLastWidthSent; 606 int mLastHeightSent; 607 // Since view height sent to webkit could be fixed to avoid relayout, this 608 // value records the last sent actual view height. 609 int mLastActualHeightSent; 610 611 private int mContentWidth; // cache of value from WebViewCore 612 private int mContentHeight; // cache of value from WebViewCore 613 614 // Need to have the separate control for horizontal and vertical scrollbar 615 // style than the View's single scrollbar style 616 private boolean mOverlayHorizontalScrollbar = true; 617 private boolean mOverlayVerticalScrollbar = false; 618 619 // our standard speed. this way small distances will be traversed in less 620 // time than large distances, but we cap the duration, so that very large 621 // distances won't take too long to get there. 622 private static final int STD_SPEED = 480; // pixels per second 623 // time for the longest scroll animation 624 private static final int MAX_DURATION = 750; // milliseconds 625 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 626 627 // Used by OverScrollGlow 628 OverScroller mScroller; 629 630 private boolean mInOverScrollMode = false; 631 private static Paint mOverScrollBackground; 632 private static Paint mOverScrollBorder; 633 634 private boolean mWrapContent; 635 private static final int MOTIONLESS_FALSE = 0; 636 private static final int MOTIONLESS_PENDING = 1; 637 private static final int MOTIONLESS_TRUE = 2; 638 private static final int MOTIONLESS_IGNORE = 3; 639 private int mHeldMotionless; 640 641 // An instance for injecting accessibility in WebViews with disabled 642 // JavaScript or ones for which no accessibility script exists 643 private AccessibilityInjector mAccessibilityInjector; 644 645 // flag indicating if accessibility script is injected so we 646 // know to handle Shift and arrows natively first 647 private boolean mAccessibilityScriptInjected; 648 649 static final boolean USE_JAVA_TEXT_SELECTION = true; 650 static final boolean DEBUG_TEXT_HANDLES = false; 651 private Region mTextSelectionRegion = new Region(); 652 private Paint mTextSelectionPaint; 653 private Drawable mSelectHandleLeft; 654 private Drawable mSelectHandleRight; 655 656 static final boolean USE_WEBKIT_RINGS = false; 657 // the color used to highlight the touch rectangles 658 private static final int HIGHLIGHT_COLOR = 0x6633b5e5; 659 // the round corner for the highlight path 660 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 661 // the region indicating where the user touched on the screen 662 private Region mTouchHighlightRegion = new Region(); 663 // the paint for the touch highlight 664 private Paint mTouchHightlightPaint; 665 // debug only 666 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 667 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 668 private Paint mTouchCrossHairColor; 669 private int mTouchHighlightX; 670 private int mTouchHighlightY; 671 private long mTouchHighlightRequested; 672 673 // Basically this proxy is used to tell the Video to update layer tree at 674 // SetBaseLayer time and to pause when WebView paused. 675 private HTML5VideoViewProxy mHTML5VideoViewProxy; 676 677 // If we are using a set picture, don't send view updates to webkit 678 private boolean mBlockWebkitViewMessages = false; 679 680 // cached value used to determine if we need to switch drawing models 681 private boolean mHardwareAccelSkia = false; 682 683 /* 684 * Private message ids 685 */ 686 private static final int REMEMBER_PASSWORD = 1; 687 private static final int NEVER_REMEMBER_PASSWORD = 2; 688 private static final int SWITCH_TO_SHORTPRESS = 3; 689 private static final int SWITCH_TO_LONGPRESS = 4; 690 private static final int RELEASE_SINGLE_TAP = 5; 691 private static final int REQUEST_FORM_DATA = 6; 692 private static final int DRAG_HELD_MOTIONLESS = 8; 693 private static final int AWAKEN_SCROLL_BARS = 9; 694 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 695 private static final int SCROLL_SELECT_TEXT = 11; 696 697 698 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 699 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 700 701 /* 702 * Package message ids 703 */ 704 static final int SCROLL_TO_MSG_ID = 101; 705 static final int NEW_PICTURE_MSG_ID = 105; 706 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 707 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 708 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 709 static final int UPDATE_ZOOM_RANGE = 109; 710 static final int UNHANDLED_NAV_KEY = 110; 711 static final int CLEAR_TEXT_ENTRY = 111; 712 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 713 static final int SHOW_RECT_MSG_ID = 113; 714 static final int LONG_PRESS_CENTER = 114; 715 static final int PREVENT_TOUCH_ID = 115; 716 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 717 // obj=Rect in doc coordinates 718 static final int INVAL_RECT_MSG_ID = 117; 719 static final int REQUEST_KEYBOARD = 118; 720 static final int DO_MOTION_UP = 119; 721 static final int SHOW_FULLSCREEN = 120; 722 static final int HIDE_FULLSCREEN = 121; 723 static final int DOM_FOCUS_CHANGED = 122; 724 static final int REPLACE_BASE_CONTENT = 123; 725 static final int FORM_DID_BLUR = 124; 726 static final int RETURN_LABEL = 125; 727 static final int FIND_AGAIN = 126; 728 static final int CENTER_FIT_RECT = 127; 729 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 730 static final int SET_SCROLLBAR_MODES = 129; 731 static final int SELECTION_STRING_CHANGED = 130; 732 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 733 static final int SAVE_WEBARCHIVE_FINISHED = 132; 734 735 static final int SET_AUTOFILLABLE = 133; 736 static final int AUTOFILL_COMPLETE = 134; 737 738 static final int SELECT_AT = 135; 739 static final int SCREEN_ON = 136; 740 static final int ENTER_FULLSCREEN_VIDEO = 137; 741 static final int UPDATE_SELECTION = 138; 742 743 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 744 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 745 746 static final String[] HandlerPrivateDebugString = { 747 "REMEMBER_PASSWORD", // = 1; 748 "NEVER_REMEMBER_PASSWORD", // = 2; 749 "SWITCH_TO_SHORTPRESS", // = 3; 750 "SWITCH_TO_LONGPRESS", // = 4; 751 "RELEASE_SINGLE_TAP", // = 5; 752 "REQUEST_FORM_DATA", // = 6; 753 "RESUME_WEBCORE_PRIORITY", // = 7; 754 "DRAG_HELD_MOTIONLESS", // = 8; 755 "AWAKEN_SCROLL_BARS", // = 9; 756 "PREVENT_DEFAULT_TIMEOUT", // = 10; 757 "SCROLL_SELECT_TEXT" // = 11; 758 }; 759 760 static final String[] HandlerPackageDebugString = { 761 "SCROLL_TO_MSG_ID", // = 101; 762 "102", // = 102; 763 "103", // = 103; 764 "104", // = 104; 765 "NEW_PICTURE_MSG_ID", // = 105; 766 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 767 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 768 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 769 "UPDATE_ZOOM_RANGE", // = 109; 770 "UNHANDLED_NAV_KEY", // = 110; 771 "CLEAR_TEXT_ENTRY", // = 111; 772 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 773 "SHOW_RECT_MSG_ID", // = 113; 774 "LONG_PRESS_CENTER", // = 114; 775 "PREVENT_TOUCH_ID", // = 115; 776 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 777 "INVAL_RECT_MSG_ID", // = 117; 778 "REQUEST_KEYBOARD", // = 118; 779 "DO_MOTION_UP", // = 119; 780 "SHOW_FULLSCREEN", // = 120; 781 "HIDE_FULLSCREEN", // = 121; 782 "DOM_FOCUS_CHANGED", // = 122; 783 "REPLACE_BASE_CONTENT", // = 123; 784 "FORM_DID_BLUR", // = 124; 785 "RETURN_LABEL", // = 125; 786 "FIND_AGAIN", // = 126; 787 "CENTER_FIT_RECT", // = 127; 788 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 789 "SET_SCROLLBAR_MODES", // = 129; 790 "SELECTION_STRING_CHANGED", // = 130; 791 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 792 "SAVE_WEBARCHIVE_FINISHED", // = 132; 793 "SET_AUTOFILLABLE", // = 133; 794 "AUTOFILL_COMPLETE", // = 134; 795 "SELECT_AT", // = 135; 796 "SCREEN_ON", // = 136; 797 "ENTER_FULLSCREEN_VIDEO" // = 137; 798 }; 799 800 // If the site doesn't use the viewport meta tag to specify the viewport, 801 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 802 static final int DEFAULT_VIEWPORT_WIDTH = 980; 803 804 // normally we try to fit the content to the minimum preferred width 805 // calculated by the Webkit. To avoid the bad behavior when some site's 806 // minimum preferred width keeps growing when changing the viewport width or 807 // the minimum preferred width is huge, an upper limit is needed. 808 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 809 810 // initial scale in percent. 0 means using default. 811 private int mInitialScaleInPercent = 0; 812 813 // Whether or not a scroll event should be sent to webkit. This is only set 814 // to false when restoring the scroll position. 815 private boolean mSendScrollEvent = true; 816 817 private int mSnapScrollMode = SNAP_NONE; 818 private static final int SNAP_NONE = 0; 819 private static final int SNAP_LOCK = 1; // not a separate state 820 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 821 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 822 private boolean mSnapPositive; 823 824 // keep these in sync with their counterparts in WebView.cpp 825 private static final int DRAW_EXTRAS_NONE = 0; 826 private static final int DRAW_EXTRAS_FIND = 1; 827 private static final int DRAW_EXTRAS_SELECTION = 2; 828 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 829 830 // keep this in sync with WebCore:ScrollbarMode in WebKit 831 private static final int SCROLLBAR_AUTO = 0; 832 private static final int SCROLLBAR_ALWAYSOFF = 1; 833 // as we auto fade scrollbar, this is ignored. 834 private static final int SCROLLBAR_ALWAYSON = 2; 835 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 836 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 837 838 // constants for determining script injection strategy 839 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 840 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 841 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 842 843 // the alias via which accessibility JavaScript interface is exposed 844 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 845 846 // JavaScript to inject the script chooser which will 847 // pick the right script for the current URL 848 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 849 "javascript:(function() {" + 850 " var chooser = document.createElement('script');" + 851 " chooser.type = 'text/javascript';" + 852 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 853 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 854 " })();"; 855 856 // Regular expression that matches the "axs" URL parameter. 857 // The value of 0 means the accessibility script is opted out 858 // The value of 1 means the accessibility script is already injected 859 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 860 861 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 862 private TextToSpeech mTextToSpeech; 863 864 // variable to cache the above pattern in case accessibility is enabled. 865 private Pattern mMatchAxsUrlParameterPattern; 866 867 /** 868 * Max distance to overscroll by in pixels. 869 * This how far content can be pulled beyond its normal bounds by the user. 870 */ 871 private int mOverscrollDistance; 872 873 /** 874 * Max distance to overfling by in pixels. 875 * This is how far flinged content can move beyond the end of its normal bounds. 876 */ 877 private int mOverflingDistance; 878 879 private OverScrollGlow mOverScrollGlow; 880 881 // Used to match key downs and key ups 882 private Vector<Integer> mKeysPressed; 883 884 /* package */ static boolean mLogEvent = true; 885 886 // for event log 887 private long mLastTouchUpTime = 0; 888 889 private WebViewCore.AutoFillData mAutoFillData; 890 891 private static boolean sNotificationsEnabled = true; 892 893 /** 894 * URI scheme for telephone number 895 */ 896 public static final String SCHEME_TEL = "tel:"; 897 /** 898 * URI scheme for email address 899 */ 900 public static final String SCHEME_MAILTO = "mailto:"; 901 /** 902 * URI scheme for map address 903 */ 904 public static final String SCHEME_GEO = "geo:0,0?q="; 905 906 private int mBackgroundColor = Color.WHITE; 907 908 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 909 private int mAutoScrollX = 0; 910 private int mAutoScrollY = 0; 911 private int mMinAutoScrollX = 0; 912 private int mMaxAutoScrollX = 0; 913 private int mMinAutoScrollY = 0; 914 private int mMaxAutoScrollY = 0; 915 private Rect mScrollingLayerBounds = new Rect(); 916 private boolean mSentAutoScrollMessage = false; 917 918 // Temporary hack to work around the context removal upon memory pressure 919 private static boolean mIncrementEGLContextHack = false; 920 921 // used for serializing asynchronously handled touch events. 922 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 923 924 // Used to track whether picture updating was paused due to a window focus change. 925 private boolean mPictureUpdatePausedForFocusChange = false; 926 927 // Used to notify listeners of a new picture. 928 private PictureListener mPictureListener; 929 /** 930 * Interface to listen for new pictures as they change. 931 * @deprecated This interface is now obsolete. 932 */ 933 @Deprecated 934 public interface PictureListener { 935 /** 936 * Notify the listener that the picture has changed. 937 * @param view The WebView that owns the picture. 938 * @param picture The new picture. 939 * @deprecated Due to internal changes, the picture does not include 940 * composited layers such as fixed position elements or scrollable divs. 941 * While the PictureListener API can still be used to detect changes in 942 * the WebView content, you are advised against its usage until a replacement 943 * is provided in a future Android release 944 */ 945 @Deprecated 946 public void onNewPicture(WebView view, Picture picture); 947 } 948 949 // FIXME: Want to make this public, but need to change the API file. 950 public /*static*/ class HitTestResult { 951 /** 952 * Default HitTestResult, where the target is unknown 953 */ 954 public static final int UNKNOWN_TYPE = 0; 955 /** 956 * @deprecated This type is no longer used. 957 */ 958 @Deprecated 959 public static final int ANCHOR_TYPE = 1; 960 /** 961 * HitTestResult for hitting a phone number 962 */ 963 public static final int PHONE_TYPE = 2; 964 /** 965 * HitTestResult for hitting a map address 966 */ 967 public static final int GEO_TYPE = 3; 968 /** 969 * HitTestResult for hitting an email address 970 */ 971 public static final int EMAIL_TYPE = 4; 972 /** 973 * HitTestResult for hitting an HTML::img tag 974 */ 975 public static final int IMAGE_TYPE = 5; 976 /** 977 * @deprecated This type is no longer used. 978 */ 979 @Deprecated 980 public static final int IMAGE_ANCHOR_TYPE = 6; 981 /** 982 * HitTestResult for hitting a HTML::a tag with src=http 983 */ 984 public static final int SRC_ANCHOR_TYPE = 7; 985 /** 986 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 987 */ 988 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 989 /** 990 * HitTestResult for hitting an edit text area 991 */ 992 public static final int EDIT_TEXT_TYPE = 9; 993 994 private int mType; 995 private String mExtra; 996 997 HitTestResult() { 998 mType = UNKNOWN_TYPE; 999 } 1000 1001 private void setType(int type) { 1002 mType = type; 1003 } 1004 1005 private void setExtra(String extra) { 1006 mExtra = extra; 1007 } 1008 1009 public int getType() { 1010 return mType; 1011 } 1012 1013 public String getExtra() { 1014 return mExtra; 1015 } 1016 } 1017 1018 /** 1019 * Construct a new WebView with a Context object. 1020 * @param context A Context object used to access application assets. 1021 */ 1022 public WebView(Context context) { 1023 this(context, null); 1024 } 1025 1026 /** 1027 * Construct a new WebView with layout parameters. 1028 * @param context A Context object used to access application assets. 1029 * @param attrs An AttributeSet passed to our parent. 1030 */ 1031 public WebView(Context context, AttributeSet attrs) { 1032 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1033 } 1034 1035 /** 1036 * Construct a new WebView with layout parameters and a default style. 1037 * @param context A Context object used to access application assets. 1038 * @param attrs An AttributeSet passed to our parent. 1039 * @param defStyle The default style resource ID. 1040 */ 1041 public WebView(Context context, AttributeSet attrs, int defStyle) { 1042 this(context, attrs, defStyle, false); 1043 } 1044 1045 /** 1046 * Construct a new WebView with layout parameters and a default style. 1047 * @param context A Context object used to access application assets. 1048 * @param attrs An AttributeSet passed to our parent. 1049 * @param defStyle The default style resource ID. 1050 */ 1051 public WebView(Context context, AttributeSet attrs, int defStyle, 1052 boolean privateBrowsing) { 1053 this(context, attrs, defStyle, null, privateBrowsing); 1054 } 1055 1056 /** 1057 * Construct a new WebView with layout parameters, a default style and a set 1058 * of custom Javscript interfaces to be added to the WebView at initialization 1059 * time. This guarantees that these interfaces will be available when the JS 1060 * context is initialized. 1061 * @param context A Context object used to access application assets. 1062 * @param attrs An AttributeSet passed to our parent. 1063 * @param defStyle The default style resource ID. 1064 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1065 * object implementing those interfaces, as values. 1066 * @hide pending API council approval. 1067 */ 1068 protected WebView(Context context, AttributeSet attrs, int defStyle, 1069 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1070 super(context, attrs, defStyle); 1071 checkThread(); 1072 1073 if (context == null) { 1074 throw new IllegalArgumentException("Invalid context argument"); 1075 } 1076 1077 // Used by the chrome stack to find application paths 1078 JniUtil.setContext(context); 1079 1080 mCallbackProxy = new CallbackProxy(context, this); 1081 mViewManager = new ViewManager(this); 1082 L10nUtils.setApplicationContext(context.getApplicationContext()); 1083 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1084 mDatabase = WebViewDatabase.getInstance(context); 1085 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1086 mZoomManager = new ZoomManager(this, mCallbackProxy); 1087 1088 /* The init method must follow the creation of certain member variables, 1089 * such as the mZoomManager. 1090 */ 1091 init(); 1092 setupPackageListener(context); 1093 setupProxyListener(context); 1094 updateMultiTouchSupport(context); 1095 1096 if (privateBrowsing) { 1097 startPrivateBrowsing(); 1098 } 1099 1100 mAutoFillData = new WebViewCore.AutoFillData(); 1101 } 1102 1103 private static class ProxyReceiver extends BroadcastReceiver { 1104 @Override 1105 public void onReceive(Context context, Intent intent) { 1106 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1107 handleProxyBroadcast(intent); 1108 } 1109 } 1110 } 1111 1112 /* 1113 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1114 */ 1115 private static ProxyReceiver sProxyReceiver; 1116 1117 /* 1118 * @param context This method expects this to be a valid context 1119 */ 1120 private static synchronized void setupProxyListener(Context context) { 1121 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1122 return; 1123 } 1124 IntentFilter filter = new IntentFilter(); 1125 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1126 sProxyReceiver = new ProxyReceiver(); 1127 Intent currentProxy = context.getApplicationContext().registerReceiver( 1128 sProxyReceiver, filter); 1129 if (currentProxy != null) { 1130 handleProxyBroadcast(currentProxy); 1131 } 1132 } 1133 1134 /* 1135 * @param context This method expects this to be a valid context 1136 */ 1137 private static synchronized void disableProxyListener(Context context) { 1138 if (sProxyReceiver == null) 1139 return; 1140 1141 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1142 sProxyReceiver = null; 1143 } 1144 1145 private static void handleProxyBroadcast(Intent intent) { 1146 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1147 if (proxyProperties == null || proxyProperties.getHost() == null) { 1148 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1149 return; 1150 } 1151 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1152 } 1153 1154 /* 1155 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1156 * or ACTION_PACKAGE_REMOVED. 1157 */ 1158 private static boolean sPackageInstallationReceiverAdded = false; 1159 1160 /* 1161 * A set of Google packages we monitor for the 1162 * navigator.isApplicationInstalled() API. Add additional packages as 1163 * needed. 1164 */ 1165 private static Set<String> sGoogleApps; 1166 static { 1167 sGoogleApps = new HashSet<String>(); 1168 sGoogleApps.add("com.google.android.youtube"); 1169 } 1170 1171 private static class PackageListener extends BroadcastReceiver { 1172 @Override 1173 public void onReceive(Context context, Intent intent) { 1174 final String action = intent.getAction(); 1175 final String packageName = intent.getData().getSchemeSpecificPart(); 1176 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1177 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1178 // if it is replacing, refreshPlugins() when adding 1179 return; 1180 } 1181 1182 if (sGoogleApps.contains(packageName)) { 1183 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1184 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1185 } else { 1186 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1187 } 1188 } 1189 1190 PluginManager pm = PluginManager.getInstance(context); 1191 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1192 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1193 } 1194 } 1195 } 1196 1197 private void setupPackageListener(Context context) { 1198 1199 /* 1200 * we must synchronize the instance check and the creation of the 1201 * receiver to ensure that only ONE receiver exists for all WebView 1202 * instances. 1203 */ 1204 synchronized (WebView.class) { 1205 1206 // if the receiver already exists then we do not need to register it 1207 // again 1208 if (sPackageInstallationReceiverAdded) { 1209 return; 1210 } 1211 1212 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1213 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1214 filter.addDataScheme("package"); 1215 BroadcastReceiver packageListener = new PackageListener(); 1216 context.getApplicationContext().registerReceiver(packageListener, filter); 1217 sPackageInstallationReceiverAdded = true; 1218 } 1219 1220 // check if any of the monitored apps are already installed 1221 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1222 1223 @Override 1224 protected Set<String> doInBackground(Void... unused) { 1225 Set<String> installedPackages = new HashSet<String>(); 1226 PackageManager pm = mContext.getPackageManager(); 1227 for (String name : sGoogleApps) { 1228 try { 1229 PackageInfo pInfo = pm.getPackageInfo(name, 1230 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1231 installedPackages.add(name); 1232 } catch (PackageManager.NameNotFoundException e) { 1233 // package not found 1234 } 1235 } 1236 return installedPackages; 1237 } 1238 1239 // Executes on the UI thread 1240 @Override 1241 protected void onPostExecute(Set<String> installedPackages) { 1242 if (mWebViewCore != null) { 1243 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1244 } 1245 } 1246 }; 1247 task.execute(); 1248 } 1249 1250 void updateMultiTouchSupport(Context context) { 1251 mZoomManager.updateMultiTouchSupport(context); 1252 } 1253 1254 private void init() { 1255 OnTrimMemoryListener.init(getContext()); 1256 1257 setWillNotDraw(false); 1258 setFocusable(true); 1259 setFocusableInTouchMode(true); 1260 setClickable(true); 1261 setLongClickable(true); 1262 1263 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1264 int slop = configuration.getScaledTouchSlop(); 1265 mTouchSlopSquare = slop * slop; 1266 slop = configuration.getScaledDoubleTapSlop(); 1267 mDoubleTapSlopSquare = slop * slop; 1268 final float density = getContext().getResources().getDisplayMetrics().density; 1269 // use one line height, 16 based on our current default font, for how 1270 // far we allow a touch be away from the edge of a link 1271 mNavSlop = (int) (16 * density); 1272 mZoomManager.init(density); 1273 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1274 1275 // Compute the inverse of the density squared. 1276 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1277 1278 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1279 mOverflingDistance = configuration.getScaledOverflingDistance(); 1280 1281 setScrollBarStyle(super.getScrollBarStyle()); 1282 // Initially use a size of two, since the user is likely to only hold 1283 // down two keys at a time (shift + another key) 1284 mKeysPressed = new Vector<Integer>(2); 1285 mHTML5VideoViewProxy = null ; 1286 } 1287 1288 @Override 1289 public boolean shouldDelayChildPressedState() { 1290 return true; 1291 } 1292 1293 /** 1294 * Adds accessibility APIs to JavaScript. 1295 * 1296 * Note: This method is responsible to performing the necessary 1297 * check if the accessibility APIs should be exposed. 1298 */ 1299 private void addAccessibilityApisToJavaScript() { 1300 if (AccessibilityManager.getInstance(mContext).isEnabled() 1301 && getSettings().getJavaScriptEnabled()) { 1302 // exposing the TTS for now ... 1303 mTextToSpeech = new TextToSpeech(getContext(), null); 1304 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1305 } 1306 } 1307 1308 /** 1309 * Removes accessibility APIs from JavaScript. 1310 */ 1311 private void removeAccessibilityApisFromJavaScript() { 1312 // exposing the TTS for now ... 1313 if (mTextToSpeech != null) { 1314 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1315 mTextToSpeech.shutdown(); 1316 mTextToSpeech = null; 1317 } 1318 } 1319 1320 @Override 1321 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1322 super.onInitializeAccessibilityNodeInfo(info); 1323 info.setScrollable(isScrollableForAccessibility()); 1324 } 1325 1326 @Override 1327 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1328 super.onInitializeAccessibilityEvent(event); 1329 event.setScrollable(isScrollableForAccessibility()); 1330 event.setScrollX(mScrollX); 1331 event.setScrollY(mScrollY); 1332 final int convertedContentWidth = contentToViewX(getContentWidth()); 1333 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1334 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1335 final int convertedContentHeight = contentToViewY(getContentHeight()); 1336 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1337 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1338 } 1339 1340 private boolean isScrollableForAccessibility() { 1341 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1342 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1343 } 1344 1345 @Override 1346 public void setOverScrollMode(int mode) { 1347 super.setOverScrollMode(mode); 1348 if (mode != OVER_SCROLL_NEVER) { 1349 if (mOverScrollGlow == null) { 1350 mOverScrollGlow = new OverScrollGlow(this); 1351 } 1352 } else { 1353 mOverScrollGlow = null; 1354 } 1355 } 1356 1357 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1358 final float density = mContext.getResources().getDisplayMetrics().density 1359 * 100 / zoomDensity; 1360 updateDefaultZoomDensity(density); 1361 } 1362 1363 /* package */ void updateDefaultZoomDensity(float density) { 1364 mNavSlop = (int) (16 * density); 1365 mZoomManager.updateDefaultZoomDensity(density); 1366 } 1367 1368 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1369 String password, final Message resumeMsg) { 1370 boolean rVal = false; 1371 if (resumeMsg == null) { 1372 // null resumeMsg implies saving password silently 1373 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1374 } else { 1375 final Message remember = mPrivateHandler.obtainMessage( 1376 REMEMBER_PASSWORD); 1377 remember.getData().putString("host", schemePlusHost); 1378 remember.getData().putString("username", username); 1379 remember.getData().putString("password", password); 1380 remember.obj = resumeMsg; 1381 1382 final Message neverRemember = mPrivateHandler.obtainMessage( 1383 NEVER_REMEMBER_PASSWORD); 1384 neverRemember.getData().putString("host", schemePlusHost); 1385 neverRemember.getData().putString("username", username); 1386 neverRemember.getData().putString("password", password); 1387 neverRemember.obj = resumeMsg; 1388 1389 new AlertDialog.Builder(getContext()) 1390 .setTitle(com.android.internal.R.string.save_password_label) 1391 .setMessage(com.android.internal.R.string.save_password_message) 1392 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1393 new DialogInterface.OnClickListener() { 1394 public void onClick(DialogInterface dialog, int which) { 1395 resumeMsg.sendToTarget(); 1396 } 1397 }) 1398 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1399 new DialogInterface.OnClickListener() { 1400 public void onClick(DialogInterface dialog, int which) { 1401 remember.sendToTarget(); 1402 } 1403 }) 1404 .setNegativeButton(com.android.internal.R.string.save_password_never, 1405 new DialogInterface.OnClickListener() { 1406 public void onClick(DialogInterface dialog, int which) { 1407 neverRemember.sendToTarget(); 1408 } 1409 }) 1410 .setOnCancelListener(new OnCancelListener() { 1411 public void onCancel(DialogInterface dialog) { 1412 resumeMsg.sendToTarget(); 1413 } 1414 }).show(); 1415 // Return true so that WebViewCore will pause while the dialog is 1416 // up. 1417 rVal = true; 1418 } 1419 return rVal; 1420 } 1421 1422 @Override 1423 public void setScrollBarStyle(int style) { 1424 if (style == View.SCROLLBARS_INSIDE_INSET 1425 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1426 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1427 } else { 1428 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1429 } 1430 super.setScrollBarStyle(style); 1431 } 1432 1433 /** 1434 * Specify whether the horizontal scrollbar has overlay style. 1435 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1436 */ 1437 public void setHorizontalScrollbarOverlay(boolean overlay) { 1438 checkThread(); 1439 mOverlayHorizontalScrollbar = overlay; 1440 } 1441 1442 /** 1443 * Specify whether the vertical scrollbar has overlay style. 1444 * @param overlay TRUE if vertical scrollbar should have overlay style. 1445 */ 1446 public void setVerticalScrollbarOverlay(boolean overlay) { 1447 checkThread(); 1448 mOverlayVerticalScrollbar = overlay; 1449 } 1450 1451 /** 1452 * Return whether horizontal scrollbar has overlay style 1453 * @return TRUE if horizontal scrollbar has overlay style. 1454 */ 1455 public boolean overlayHorizontalScrollbar() { 1456 checkThread(); 1457 return mOverlayHorizontalScrollbar; 1458 } 1459 1460 /** 1461 * Return whether vertical scrollbar has overlay style 1462 * @return TRUE if vertical scrollbar has overlay style. 1463 */ 1464 public boolean overlayVerticalScrollbar() { 1465 checkThread(); 1466 return mOverlayVerticalScrollbar; 1467 } 1468 1469 /* 1470 * Return the width of the view where the content of WebView should render 1471 * to. 1472 * Note: this can be called from WebCoreThread. 1473 */ 1474 /* package */ int getViewWidth() { 1475 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1476 return getWidth(); 1477 } else { 1478 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1479 } 1480 } 1481 1482 /** 1483 * returns the height of the titlebarview (if any). Does not care about 1484 * scrolling 1485 * @hide 1486 */ 1487 protected int getTitleHeight() { 1488 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1489 } 1490 1491 /** 1492 * Return the amount of the titlebarview (if any) that is visible 1493 * 1494 * @deprecated This method is now obsolete. 1495 */ 1496 public int getVisibleTitleHeight() { 1497 checkThread(); 1498 return getVisibleTitleHeightImpl(); 1499 } 1500 1501 private int getVisibleTitleHeightImpl() { 1502 // need to restrict mScrollY due to over scroll 1503 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1504 getOverlappingActionModeHeight()); 1505 } 1506 1507 private int mCachedOverlappingActionModeHeight = -1; 1508 1509 private int getOverlappingActionModeHeight() { 1510 if (mFindCallback == null) { 1511 return 0; 1512 } 1513 if (mCachedOverlappingActionModeHeight < 0) { 1514 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1515 mCachedOverlappingActionModeHeight = Math.max(0, 1516 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1517 } 1518 return mCachedOverlappingActionModeHeight; 1519 } 1520 1521 /* 1522 * Return the height of the view where the content of WebView should render 1523 * to. Note that this excludes mTitleBar, if there is one. 1524 * Note: this can be called from WebCoreThread. 1525 */ 1526 /* package */ int getViewHeight() { 1527 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1528 } 1529 1530 int getViewHeightWithTitle() { 1531 int height = getHeight(); 1532 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1533 height -= getHorizontalScrollbarHeight(); 1534 } 1535 return height; 1536 } 1537 1538 /** 1539 * @return The SSL certificate for the main top-level page or null if 1540 * there is no certificate (the site is not secure). 1541 */ 1542 public SslCertificate getCertificate() { 1543 checkThread(); 1544 return mCertificate; 1545 } 1546 1547 /** 1548 * Sets the SSL certificate for the main top-level page. 1549 */ 1550 public void setCertificate(SslCertificate certificate) { 1551 checkThread(); 1552 if (DebugFlags.WEB_VIEW) { 1553 Log.v(LOGTAG, "setCertificate=" + certificate); 1554 } 1555 // here, the certificate can be null (if the site is not secure) 1556 mCertificate = certificate; 1557 } 1558 1559 //------------------------------------------------------------------------- 1560 // Methods called by activity 1561 //------------------------------------------------------------------------- 1562 1563 /** 1564 * Save the username and password for a particular host in the WebView's 1565 * internal database. 1566 * @param host The host that required the credentials. 1567 * @param username The username for the given host. 1568 * @param password The password for the given host. 1569 */ 1570 public void savePassword(String host, String username, String password) { 1571 checkThread(); 1572 mDatabase.setUsernamePassword(host, username, password); 1573 } 1574 1575 /** 1576 * Set the HTTP authentication credentials for a given host and realm. 1577 * 1578 * @param host The host for the credentials. 1579 * @param realm The realm for the credentials. 1580 * @param username The username for the password. If it is null, it means 1581 * password can't be saved. 1582 * @param password The password 1583 */ 1584 public void setHttpAuthUsernamePassword(String host, String realm, 1585 String username, String password) { 1586 checkThread(); 1587 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1588 } 1589 1590 /** 1591 * Retrieve the HTTP authentication username and password for a given 1592 * host & realm pair 1593 * 1594 * @param host The host for which the credentials apply. 1595 * @param realm The realm for which the credentials apply. 1596 * @return String[] if found, String[0] is username, which can be null and 1597 * String[1] is password. Return null if it can't find anything. 1598 */ 1599 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1600 checkThread(); 1601 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1602 } 1603 1604 /** 1605 * Remove Find or Select ActionModes, if active. 1606 */ 1607 private void clearActionModes() { 1608 if (mSelectCallback != null) { 1609 mSelectCallback.finish(); 1610 } 1611 if (mFindCallback != null) { 1612 mFindCallback.finish(); 1613 } 1614 } 1615 1616 /** 1617 * Called to clear state when moving from one page to another, or changing 1618 * in some other way that makes elements associated with the current page 1619 * (such as WebTextView or ActionModes) no longer relevant. 1620 */ 1621 private void clearHelpers() { 1622 clearTextEntry(); 1623 clearActionModes(); 1624 dismissFullScreenMode(); 1625 } 1626 1627 /** 1628 * Destroy the internal state of the WebView. This method should be called 1629 * after the WebView has been removed from the view system. No other 1630 * methods may be called on a WebView after destroy. 1631 */ 1632 public void destroy() { 1633 checkThread(); 1634 destroyImpl(); 1635 } 1636 1637 private void destroyImpl() { 1638 clearHelpers(); 1639 if (mListBoxDialog != null) { 1640 mListBoxDialog.dismiss(); 1641 mListBoxDialog = null; 1642 } 1643 // remove so that it doesn't cause events 1644 if (mWebTextView != null) { 1645 mWebTextView.remove(); 1646 mWebTextView = null; 1647 } 1648 if (mNativeClass != 0) nativeStopGL(); 1649 if (mWebViewCore != null) { 1650 // Set the handlers to null before destroying WebViewCore so no 1651 // more messages will be posted. 1652 mCallbackProxy.setWebViewClient(null); 1653 mCallbackProxy.setWebChromeClient(null); 1654 // Tell WebViewCore to destroy itself 1655 synchronized (this) { 1656 WebViewCore webViewCore = mWebViewCore; 1657 mWebViewCore = null; // prevent using partial webViewCore 1658 webViewCore.destroy(); 1659 } 1660 // Remove any pending messages that might not be serviced yet. 1661 mPrivateHandler.removeCallbacksAndMessages(null); 1662 mCallbackProxy.removeCallbacksAndMessages(null); 1663 // Wake up the WebCore thread just in case it is waiting for a 1664 // JavaScript dialog. 1665 synchronized (mCallbackProxy) { 1666 mCallbackProxy.notify(); 1667 } 1668 } 1669 if (mNativeClass != 0) { 1670 nativeDestroy(); 1671 mNativeClass = 0; 1672 } 1673 } 1674 1675 /** 1676 * Enables platform notifications of data state and proxy changes. 1677 * Notifications are enabled by default. 1678 * 1679 * @deprecated This method is now obsolete. 1680 */ 1681 @Deprecated 1682 public static void enablePlatformNotifications() { 1683 checkThread(); 1684 synchronized (WebView.class) { 1685 Network.enablePlatformNotifications(); 1686 sNotificationsEnabled = true; 1687 Context context = JniUtil.getContext(); 1688 if (context != null) 1689 setupProxyListener(context); 1690 } 1691 } 1692 1693 /** 1694 * Disables platform notifications of data state and proxy changes. 1695 * Notifications are enabled by default. 1696 * 1697 * @deprecated This method is now obsolete. 1698 */ 1699 @Deprecated 1700 public static void disablePlatformNotifications() { 1701 checkThread(); 1702 synchronized (WebView.class) { 1703 Network.disablePlatformNotifications(); 1704 sNotificationsEnabled = false; 1705 Context context = JniUtil.getContext(); 1706 if (context != null) 1707 disableProxyListener(context); 1708 } 1709 } 1710 1711 /** 1712 * Sets JavaScript engine flags. 1713 * 1714 * @param flags JS engine flags in a String 1715 * 1716 * @hide pending API solidification 1717 */ 1718 public void setJsFlags(String flags) { 1719 checkThread(); 1720 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1721 } 1722 1723 /** 1724 * Inform WebView of the network state. This is used to set 1725 * the JavaScript property window.navigator.isOnline and 1726 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1727 * @param networkUp boolean indicating if network is available 1728 */ 1729 public void setNetworkAvailable(boolean networkUp) { 1730 checkThread(); 1731 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1732 networkUp ? 1 : 0, 0); 1733 } 1734 1735 /** 1736 * Inform WebView about the current network type. 1737 * {@hide} 1738 */ 1739 public void setNetworkType(String type, String subtype) { 1740 checkThread(); 1741 Map<String, String> map = new HashMap<String, String>(); 1742 map.put("type", type); 1743 map.put("subtype", subtype); 1744 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1745 } 1746 /** 1747 * Save the state of this WebView used in 1748 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1749 * method no longer stores the display data for this WebView. The previous 1750 * behavior could potentially leak files if {@link #restoreState} was never 1751 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1752 * and restoring the display data. 1753 * @param outState The Bundle to store the WebView state. 1754 * @return The same copy of the back/forward list used to save the state. If 1755 * saveState fails, the returned list will be null. 1756 * @see #savePicture 1757 * @see #restorePicture 1758 */ 1759 public WebBackForwardList saveState(Bundle outState) { 1760 checkThread(); 1761 if (outState == null) { 1762 return null; 1763 } 1764 // We grab a copy of the back/forward list because a client of WebView 1765 // may have invalidated the history list by calling clearHistory. 1766 WebBackForwardList list = copyBackForwardList(); 1767 final int currentIndex = list.getCurrentIndex(); 1768 final int size = list.getSize(); 1769 // We should fail saving the state if the list is empty or the index is 1770 // not in a valid range. 1771 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1772 return null; 1773 } 1774 outState.putInt("index", currentIndex); 1775 // FIXME: This should just be a byte[][] instead of ArrayList but 1776 // Parcel.java does not have the code to handle multi-dimensional 1777 // arrays. 1778 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1779 for (int i = 0; i < size; i++) { 1780 WebHistoryItem item = list.getItemAtIndex(i); 1781 if (null == item) { 1782 // FIXME: this shouldn't happen 1783 // need to determine how item got set to null 1784 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1785 return null; 1786 } 1787 byte[] data = item.getFlattenedData(); 1788 if (data == null) { 1789 // It would be very odd to not have any data for a given history 1790 // item. And we will fail to rebuild the history list without 1791 // flattened data. 1792 return null; 1793 } 1794 history.add(data); 1795 } 1796 outState.putSerializable("history", history); 1797 if (mCertificate != null) { 1798 outState.putBundle("certificate", 1799 SslCertificate.saveState(mCertificate)); 1800 } 1801 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1802 mZoomManager.saveZoomState(outState); 1803 return list; 1804 } 1805 1806 /** 1807 * Save the current display data to the Bundle given. Used in conjunction 1808 * with {@link #saveState}. 1809 * @param b A Bundle to store the display data. 1810 * @param dest The file to store the serialized picture data. Will be 1811 * overwritten with this WebView's picture data. 1812 * @return True if the picture was successfully saved. 1813 * @deprecated This method is now obsolete. 1814 */ 1815 @Deprecated 1816 public boolean savePicture(Bundle b, final File dest) { 1817 checkThread(); 1818 if (dest == null || b == null) { 1819 return false; 1820 } 1821 final Picture p = capturePicture(); 1822 // Use a temporary file while writing to ensure the destination file 1823 // contains valid data. 1824 final File temp = new File(dest.getPath() + ".writing"); 1825 new Thread(new Runnable() { 1826 public void run() { 1827 FileOutputStream out = null; 1828 try { 1829 out = new FileOutputStream(temp); 1830 p.writeToStream(out); 1831 // Writing the picture succeeded, rename the temporary file 1832 // to the destination. 1833 temp.renameTo(dest); 1834 } catch (Exception e) { 1835 // too late to do anything about it. 1836 } finally { 1837 if (out != null) { 1838 try { 1839 out.close(); 1840 } catch (Exception e) { 1841 // Can't do anything about that 1842 } 1843 } 1844 temp.delete(); 1845 } 1846 } 1847 }).start(); 1848 // now update the bundle 1849 b.putInt("scrollX", mScrollX); 1850 b.putInt("scrollY", mScrollY); 1851 mZoomManager.saveZoomState(b); 1852 return true; 1853 } 1854 1855 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1856 int sx = b.getInt("scrollX", 0); 1857 int sy = b.getInt("scrollY", 0); 1858 1859 mDrawHistory = true; 1860 mHistoryPicture = p; 1861 1862 mScrollX = sx; 1863 mScrollY = sy; 1864 mZoomManager.restoreZoomState(b); 1865 final float scale = mZoomManager.getScale(); 1866 mHistoryWidth = Math.round(p.getWidth() * scale); 1867 mHistoryHeight = Math.round(p.getHeight() * scale); 1868 1869 invalidate(); 1870 } 1871 1872 /** 1873 * Restore the display data that was save in {@link #savePicture}. Used in 1874 * conjunction with {@link #restoreState}. 1875 * 1876 * Note that this will not work if the WebView is hardware accelerated. 1877 * @param b A Bundle containing the saved display data. 1878 * @param src The file where the picture data was stored. 1879 * @return True if the picture was successfully restored. 1880 * @deprecated This method is now obsolete. 1881 */ 1882 @Deprecated 1883 public boolean restorePicture(Bundle b, File src) { 1884 checkThread(); 1885 if (src == null || b == null) { 1886 return false; 1887 } 1888 if (!src.exists()) { 1889 return false; 1890 } 1891 try { 1892 final FileInputStream in = new FileInputStream(src); 1893 final Bundle copy = new Bundle(b); 1894 new Thread(new Runnable() { 1895 public void run() { 1896 try { 1897 final Picture p = Picture.createFromStream(in); 1898 if (p != null) { 1899 // Post a runnable on the main thread to update the 1900 // history picture fields. 1901 mPrivateHandler.post(new Runnable() { 1902 public void run() { 1903 restoreHistoryPictureFields(p, copy); 1904 } 1905 }); 1906 } 1907 } finally { 1908 try { 1909 in.close(); 1910 } catch (Exception e) { 1911 // Nothing we can do now. 1912 } 1913 } 1914 } 1915 }).start(); 1916 } catch (FileNotFoundException e){ 1917 e.printStackTrace(); 1918 } 1919 return true; 1920 } 1921 1922 /** 1923 * Saves the view data to the output stream. The output is highly 1924 * version specific, and may not be able to be loaded by newer versions 1925 * of WebView. 1926 * @param stream The {@link OutputStream} to save to 1927 * @return True if saved successfully 1928 * @hide 1929 */ 1930 public boolean saveViewState(OutputStream stream) { 1931 try { 1932 return ViewStateSerializer.serializeViewState(stream, this); 1933 } catch (IOException e) { 1934 Log.w(LOGTAG, "Failed to saveViewState", e); 1935 } 1936 return false; 1937 } 1938 1939 /** 1940 * Loads the view data from the input stream. See 1941 * {@link #saveViewState(OutputStream)} for more information. 1942 * @param stream The {@link InputStream} to load from 1943 * @return True if loaded successfully 1944 * @hide 1945 */ 1946 public boolean loadViewState(InputStream stream) { 1947 try { 1948 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1949 mBlockWebkitViewMessages = true; 1950 setNewPicture(mLoadedPicture, true); 1951 mLoadedPicture.mViewState = null; 1952 return true; 1953 } catch (IOException e) { 1954 Log.w(LOGTAG, "Failed to loadViewState", e); 1955 } 1956 return false; 1957 } 1958 1959 /** 1960 * Clears the view state set with {@link #loadViewState(InputStream)}. 1961 * This WebView will then switch to showing the content from webkit 1962 * @hide 1963 */ 1964 public void clearViewState() { 1965 mBlockWebkitViewMessages = false; 1966 mLoadedPicture = null; 1967 invalidate(); 1968 } 1969 1970 /** 1971 * Restore the state of this WebView from the given map used in 1972 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1973 * be called to restore the state of the WebView before using the object. If 1974 * it is called after the WebView has had a chance to build state (load 1975 * pages, create a back/forward list, etc.) there may be undesirable 1976 * side-effects. Please note that this method no longer restores the 1977 * display data for this WebView. See {@link #savePicture} and {@link 1978 * #restorePicture} for saving and restoring the display data. 1979 * @param inState The incoming Bundle of state. 1980 * @return The restored back/forward list or null if restoreState failed. 1981 * @see #savePicture 1982 * @see #restorePicture 1983 */ 1984 public WebBackForwardList restoreState(Bundle inState) { 1985 checkThread(); 1986 WebBackForwardList returnList = null; 1987 if (inState == null) { 1988 return returnList; 1989 } 1990 if (inState.containsKey("index") && inState.containsKey("history")) { 1991 mCertificate = SslCertificate.restoreState( 1992 inState.getBundle("certificate")); 1993 1994 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1995 final int index = inState.getInt("index"); 1996 // We can't use a clone of the list because we need to modify the 1997 // shared copy, so synchronize instead to prevent concurrent 1998 // modifications. 1999 synchronized (list) { 2000 final List<byte[]> history = 2001 (List<byte[]>) inState.getSerializable("history"); 2002 final int size = history.size(); 2003 // Check the index bounds so we don't crash in native code while 2004 // restoring the history index. 2005 if (index < 0 || index >= size) { 2006 return null; 2007 } 2008 for (int i = 0; i < size; i++) { 2009 byte[] data = history.remove(0); 2010 if (data == null) { 2011 // If we somehow have null data, we cannot reconstruct 2012 // the item and thus our history list cannot be rebuilt. 2013 return null; 2014 } 2015 WebHistoryItem item = new WebHistoryItem(data); 2016 list.addHistoryItem(item); 2017 } 2018 // Grab the most recent copy to return to the caller. 2019 returnList = copyBackForwardList(); 2020 // Update the copy to have the correct index. 2021 returnList.setCurrentIndex(index); 2022 } 2023 // Restore private browsing setting. 2024 if (inState.getBoolean("privateBrowsingEnabled")) { 2025 getSettings().setPrivateBrowsingEnabled(true); 2026 } 2027 mZoomManager.restoreZoomState(inState); 2028 // Remove all pending messages because we are restoring previous 2029 // state. 2030 mWebViewCore.removeMessages(); 2031 // Send a restore state message. 2032 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2033 } 2034 return returnList; 2035 } 2036 2037 /** 2038 * Load the given URL with the specified additional HTTP headers. 2039 * @param url The URL of the resource to load. 2040 * @param additionalHttpHeaders The additional headers to be used in the 2041 * HTTP request for this URL, specified as a map from name to 2042 * value. Note that if this map contains any of the headers 2043 * that are set by default by the WebView, such as those 2044 * controlling caching, accept types or the User-Agent, their 2045 * values may be overriden by the WebView's defaults. 2046 */ 2047 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2048 checkThread(); 2049 loadUrlImpl(url, additionalHttpHeaders); 2050 } 2051 2052 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2053 switchOutDrawHistory(); 2054 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2055 arg.mUrl = url; 2056 arg.mExtraHeaders = extraHeaders; 2057 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2058 clearHelpers(); 2059 } 2060 2061 /** 2062 * Load the given URL. 2063 * @param url The URL of the resource to load. 2064 */ 2065 public void loadUrl(String url) { 2066 checkThread(); 2067 loadUrlImpl(url); 2068 } 2069 2070 private void loadUrlImpl(String url) { 2071 if (url == null) { 2072 return; 2073 } 2074 loadUrlImpl(url, null); 2075 } 2076 2077 /** 2078 * Load the url with postData using "POST" method into the WebView. If url 2079 * is not a network url, it will be loaded with {link 2080 * {@link #loadUrl(String)} instead. 2081 * 2082 * @param url The url of the resource to load. 2083 * @param postData The data will be passed to "POST" request. 2084 */ 2085 public void postUrl(String url, byte[] postData) { 2086 checkThread(); 2087 if (URLUtil.isNetworkUrl(url)) { 2088 switchOutDrawHistory(); 2089 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2090 arg.mUrl = url; 2091 arg.mPostData = postData; 2092 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2093 clearHelpers(); 2094 } else { 2095 loadUrlImpl(url); 2096 } 2097 } 2098 2099 /** 2100 * Load the given data into the WebView using a 'data' scheme URL. 2101 * <p> 2102 * Note that JavaScript's same origin policy means that script running in a 2103 * page loaded using this method will be unable to access content loaded 2104 * using any scheme other than 'data', including 'http(s)'. To avoid this 2105 * restriction, use {@link 2106 * #loadDataWithBaseURL(String,String,String,String,String) 2107 * loadDataWithBaseURL()} with an appropriate base URL. 2108 * <p> 2109 * If the value of the encoding parameter is 'base64', then the data must 2110 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2111 * octets inside the range of safe URL characters and use the standard %xx 2112 * hex encoding of URLs for octets outside that range. For example, 2113 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2114 * <p> 2115 * The 'data' scheme URL formed by this method uses the default US-ASCII 2116 * charset. If you need need to set a different charset, you should form a 2117 * 'data' scheme URL which explicitly specifies a charset parameter in the 2118 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2119 * Note that the charset obtained from the mediatype portion of a data URL 2120 * always overrides that specified in the HTML or XML document itself. 2121 * @param data A String of data in the given encoding. 2122 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2123 * @param encoding The encoding of the data. 2124 */ 2125 public void loadData(String data, String mimeType, String encoding) { 2126 checkThread(); 2127 loadDataImpl(data, mimeType, encoding); 2128 } 2129 2130 private void loadDataImpl(String data, String mimeType, String encoding) { 2131 StringBuilder dataUrl = new StringBuilder("data:"); 2132 dataUrl.append(mimeType); 2133 if ("base64".equals(encoding)) { 2134 dataUrl.append(";base64"); 2135 } 2136 dataUrl.append(","); 2137 dataUrl.append(data); 2138 loadUrlImpl(dataUrl.toString()); 2139 } 2140 2141 /** 2142 * Load the given data into the WebView, using baseUrl as the base URL for 2143 * the content. The base URL is used both to resolve relative URLs and when 2144 * applying JavaScript's same origin policy. The historyUrl is used for the 2145 * history entry. 2146 * <p> 2147 * Note that content specified in this way can access local device files 2148 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2149 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2150 * <p> 2151 * If the base URL uses the data scheme, this method is equivalent to 2152 * calling {@link #loadData(String,String,String) loadData()} and the 2153 * historyUrl is ignored. 2154 * @param baseUrl URL to use as the page's base URL. If null defaults to 2155 * 'about:blank' 2156 * @param data A String of data in the given encoding. 2157 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2158 * defaults to 'text/html'. 2159 * @param encoding The encoding of the data. 2160 * @param historyUrl URL to use as the history entry, if null defaults to 2161 * 'about:blank'. 2162 */ 2163 public void loadDataWithBaseURL(String baseUrl, String data, 2164 String mimeType, String encoding, String historyUrl) { 2165 checkThread(); 2166 2167 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2168 loadDataImpl(data, mimeType, encoding); 2169 return; 2170 } 2171 switchOutDrawHistory(); 2172 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2173 arg.mBaseUrl = baseUrl; 2174 arg.mData = data; 2175 arg.mMimeType = mimeType; 2176 arg.mEncoding = encoding; 2177 arg.mHistoryUrl = historyUrl; 2178 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2179 clearHelpers(); 2180 } 2181 2182 /** 2183 * Saves the current view as a web archive. 2184 * 2185 * @param filename The filename where the archive should be placed. 2186 */ 2187 public void saveWebArchive(String filename) { 2188 checkThread(); 2189 saveWebArchiveImpl(filename, false, null); 2190 } 2191 2192 /* package */ static class SaveWebArchiveMessage { 2193 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2194 mBasename = basename; 2195 mAutoname = autoname; 2196 mCallback = callback; 2197 } 2198 2199 /* package */ final String mBasename; 2200 /* package */ final boolean mAutoname; 2201 /* package */ final ValueCallback<String> mCallback; 2202 /* package */ String mResultFile; 2203 } 2204 2205 /** 2206 * Saves the current view as a web archive. 2207 * 2208 * @param basename The filename where the archive should be placed. 2209 * @param autoname If false, takes basename to be a file. If true, basename 2210 * is assumed to be a directory in which a filename will be 2211 * chosen according to the url of the current page. 2212 * @param callback Called after the web archive has been saved. The 2213 * parameter for onReceiveValue will either be the filename 2214 * under which the file was saved, or null if saving the 2215 * file failed. 2216 */ 2217 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2218 checkThread(); 2219 saveWebArchiveImpl(basename, autoname, callback); 2220 } 2221 2222 private void saveWebArchiveImpl(String basename, boolean autoname, 2223 ValueCallback<String> callback) { 2224 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2225 new SaveWebArchiveMessage(basename, autoname, callback)); 2226 } 2227 2228 /** 2229 * Stop the current load. 2230 */ 2231 public void stopLoading() { 2232 checkThread(); 2233 // TODO: should we clear all the messages in the queue before sending 2234 // STOP_LOADING? 2235 switchOutDrawHistory(); 2236 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2237 } 2238 2239 /** 2240 * Reload the current url. 2241 */ 2242 public void reload() { 2243 checkThread(); 2244 clearHelpers(); 2245 switchOutDrawHistory(); 2246 mWebViewCore.sendMessage(EventHub.RELOAD); 2247 } 2248 2249 /** 2250 * Return true if this WebView has a back history item. 2251 * @return True iff this WebView has a back history item. 2252 */ 2253 public boolean canGoBack() { 2254 checkThread(); 2255 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2256 synchronized (l) { 2257 if (l.getClearPending()) { 2258 return false; 2259 } else { 2260 return l.getCurrentIndex() > 0; 2261 } 2262 } 2263 } 2264 2265 /** 2266 * Go back in the history of this WebView. 2267 */ 2268 public void goBack() { 2269 checkThread(); 2270 goBackOrForwardImpl(-1); 2271 } 2272 2273 /** 2274 * Return true if this WebView has a forward history item. 2275 * @return True iff this Webview has a forward history item. 2276 */ 2277 public boolean canGoForward() { 2278 checkThread(); 2279 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2280 synchronized (l) { 2281 if (l.getClearPending()) { 2282 return false; 2283 } else { 2284 return l.getCurrentIndex() < l.getSize() - 1; 2285 } 2286 } 2287 } 2288 2289 /** 2290 * Go forward in the history of this WebView. 2291 */ 2292 public void goForward() { 2293 checkThread(); 2294 goBackOrForwardImpl(1); 2295 } 2296 2297 /** 2298 * Return true if the page can go back or forward the given 2299 * number of steps. 2300 * @param steps The negative or positive number of steps to move the 2301 * history. 2302 */ 2303 public boolean canGoBackOrForward(int steps) { 2304 checkThread(); 2305 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2306 synchronized (l) { 2307 if (l.getClearPending()) { 2308 return false; 2309 } else { 2310 int newIndex = l.getCurrentIndex() + steps; 2311 return newIndex >= 0 && newIndex < l.getSize(); 2312 } 2313 } 2314 } 2315 2316 /** 2317 * Go to the history item that is the number of steps away from 2318 * the current item. Steps is negative if backward and positive 2319 * if forward. 2320 * @param steps The number of steps to take back or forward in the back 2321 * forward list. 2322 */ 2323 public void goBackOrForward(int steps) { 2324 checkThread(); 2325 goBackOrForwardImpl(steps); 2326 } 2327 2328 private void goBackOrForwardImpl(int steps) { 2329 goBackOrForward(steps, false); 2330 } 2331 2332 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2333 if (steps != 0) { 2334 clearHelpers(); 2335 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2336 ignoreSnapshot ? 1 : 0); 2337 } 2338 } 2339 2340 /** 2341 * Returns true if private browsing is enabled in this WebView. 2342 */ 2343 public boolean isPrivateBrowsingEnabled() { 2344 checkThread(); 2345 return getSettings().isPrivateBrowsingEnabled(); 2346 } 2347 2348 private void startPrivateBrowsing() { 2349 getSettings().setPrivateBrowsingEnabled(true); 2350 } 2351 2352 private boolean extendScroll(int y) { 2353 int finalY = mScroller.getFinalY(); 2354 int newY = pinLocY(finalY + y); 2355 if (newY == finalY) return false; 2356 mScroller.setFinalY(newY); 2357 mScroller.extendDuration(computeDuration(0, y)); 2358 return true; 2359 } 2360 2361 /** 2362 * Scroll the contents of the view up by half the view size 2363 * @param top true to jump to the top of the page 2364 * @return true if the page was scrolled 2365 */ 2366 public boolean pageUp(boolean top) { 2367 checkThread(); 2368 if (mNativeClass == 0) { 2369 return false; 2370 } 2371 nativeClearCursor(); // start next trackball movement from page edge 2372 if (top) { 2373 // go to the top of the document 2374 return pinScrollTo(mScrollX, 0, true, 0); 2375 } 2376 // Page up 2377 int h = getHeight(); 2378 int y; 2379 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2380 y = -h + PAGE_SCROLL_OVERLAP; 2381 } else { 2382 y = -h / 2; 2383 } 2384 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2385 : extendScroll(y); 2386 } 2387 2388 /** 2389 * Scroll the contents of the view down by half the page size 2390 * @param bottom true to jump to bottom of page 2391 * @return true if the page was scrolled 2392 */ 2393 public boolean pageDown(boolean bottom) { 2394 checkThread(); 2395 if (mNativeClass == 0) { 2396 return false; 2397 } 2398 nativeClearCursor(); // start next trackball movement from page edge 2399 if (bottom) { 2400 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2401 } 2402 // Page down. 2403 int h = getHeight(); 2404 int y; 2405 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2406 y = h - PAGE_SCROLL_OVERLAP; 2407 } else { 2408 y = h / 2; 2409 } 2410 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2411 : extendScroll(y); 2412 } 2413 2414 /** 2415 * Clear the view so that onDraw() will draw nothing but white background, 2416 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2417 */ 2418 public void clearView() { 2419 checkThread(); 2420 mContentWidth = 0; 2421 mContentHeight = 0; 2422 setBaseLayer(0, null, false, false, false); 2423 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2424 } 2425 2426 /** 2427 * Return a new picture that captures the current display of the webview. 2428 * This is a copy of the display, and will be unaffected if the webview 2429 * later loads a different URL. 2430 * 2431 * @return a picture containing the current contents of the view. Note this 2432 * picture is of the entire document, and is not restricted to the 2433 * bounds of the view. 2434 */ 2435 public Picture capturePicture() { 2436 checkThread(); 2437 if (mNativeClass == 0) return null; 2438 Picture result = new Picture(); 2439 nativeCopyBaseContentToPicture(result); 2440 return result; 2441 } 2442 2443 /** 2444 * Return true if the browser is displaying a TextView for text input. 2445 */ 2446 private boolean inEditingMode() { 2447 return mWebTextView != null && mWebTextView.getParent() != null; 2448 } 2449 2450 /** 2451 * Remove the WebTextView. 2452 */ 2453 private void clearTextEntry() { 2454 if (inEditingMode()) { 2455 mWebTextView.remove(); 2456 } else { 2457 // The keyboard may be open with the WebView as the served view 2458 hideSoftKeyboard(); 2459 } 2460 } 2461 2462 /** 2463 * Return the current scale of the WebView 2464 * @return The current scale. 2465 */ 2466 public float getScale() { 2467 checkThread(); 2468 return mZoomManager.getScale(); 2469 } 2470 2471 // Called by JNI. Returns the scale to apply to the text selection handles 2472 /* package */ float getTextHandleScale() { 2473 float density = mContext.getResources().getDisplayMetrics().density; 2474 return density / getScale(); 2475 } 2476 2477 /** 2478 * Return the reading level scale of the WebView 2479 * @return The reading level scale. 2480 */ 2481 /*package*/ float getReadingLevelScale() { 2482 return mZoomManager.getReadingLevelScale(); 2483 } 2484 2485 /** 2486 * Set the initial scale for the WebView. 0 means default. If 2487 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2488 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2489 * WebView starts with this value as initial scale. 2490 * Please note that unlike the scale properties in the viewport meta tag, 2491 * this method doesn't take the screen density into account. 2492 * 2493 * @param scaleInPercent The initial scale in percent. 2494 */ 2495 public void setInitialScale(int scaleInPercent) { 2496 checkThread(); 2497 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2498 } 2499 2500 /** 2501 * Invoke the graphical zoom picker widget for this WebView. This will 2502 * result in the zoom widget appearing on the screen to control the zoom 2503 * level of this WebView. 2504 */ 2505 public void invokeZoomPicker() { 2506 checkThread(); 2507 if (!getSettings().supportZoom()) { 2508 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2509 return; 2510 } 2511 clearHelpers(); 2512 mZoomManager.invokeZoomPicker(); 2513 } 2514 2515 /** 2516 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2517 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2518 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2519 * anchor does not have a url or if it is a JavaScript url, the type will 2520 * be UNKNOWN_TYPE and the url has to be retrieved through 2521 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2522 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2523 * the "extra" field. A type of 2524 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2525 * a child node. If a phone number is found, the HitTestResult type is set 2526 * to PHONE_TYPE and the phone number is set in the "extra" field of 2527 * HitTestResult. If a map address is found, the HitTestResult type is set 2528 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2529 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2530 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2531 * HitTestResult type is set to UNKNOWN_TYPE. 2532 */ 2533 public HitTestResult getHitTestResult() { 2534 checkThread(); 2535 return hitTestResult(mInitialHitTestResult); 2536 } 2537 2538 private HitTestResult hitTestResult(HitTestResult fallback) { 2539 if (mNativeClass == 0) { 2540 return null; 2541 } 2542 2543 HitTestResult result = new HitTestResult(); 2544 if (nativeHasCursorNode()) { 2545 if (nativeCursorIsTextInput()) { 2546 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2547 } else { 2548 String text = nativeCursorText(); 2549 if (text != null) { 2550 if (text.startsWith(SCHEME_TEL)) { 2551 result.setType(HitTestResult.PHONE_TYPE); 2552 result.setExtra(text.substring(SCHEME_TEL.length())); 2553 } else if (text.startsWith(SCHEME_MAILTO)) { 2554 result.setType(HitTestResult.EMAIL_TYPE); 2555 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2556 } else if (text.startsWith(SCHEME_GEO)) { 2557 result.setType(HitTestResult.GEO_TYPE); 2558 result.setExtra(URLDecoder.decode(text 2559 .substring(SCHEME_GEO.length()))); 2560 } else if (nativeCursorIsAnchor()) { 2561 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2562 result.setExtra(text); 2563 } 2564 } 2565 } 2566 } else if (fallback != null) { 2567 /* If webkit causes a rebuild while the long press is in progress, 2568 * the cursor node may be reset, even if it is still around. This 2569 * uses the cursor node saved when the touch began. Since the 2570 * nativeImageURI below only changes the result if it is successful, 2571 * this uses the data beneath the touch if available or the original 2572 * tap data otherwise. 2573 */ 2574 Log.v(LOGTAG, "hitTestResult use fallback"); 2575 result = fallback; 2576 } 2577 int type = result.getType(); 2578 if (type == HitTestResult.UNKNOWN_TYPE 2579 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2580 // Now check to see if it is an image. 2581 int contentX = viewToContentX(mLastTouchX + mScrollX); 2582 int contentY = viewToContentY(mLastTouchY + mScrollY); 2583 String text = nativeImageURI(contentX, contentY); 2584 if (text != null) { 2585 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2586 HitTestResult.IMAGE_TYPE : 2587 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2588 result.setExtra(text); 2589 } 2590 } 2591 return result; 2592 } 2593 2594 // Called by JNI when the DOM has changed the focus. Clear the focus so 2595 // that new keys will go to the newly focused field 2596 private void domChangedFocus() { 2597 if (inEditingMode()) { 2598 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2599 } 2600 } 2601 /** 2602 * Request the anchor or image element URL at the last tapped point. 2603 * If hrefMsg is null, this method returns immediately and does not 2604 * dispatch hrefMsg to its target. If the tapped point hits an image, 2605 * an anchor, or an image in an anchor, the message associates 2606 * strings in named keys in its data. The value paired with the key 2607 * may be an empty string. 2608 * 2609 * @param hrefMsg This message will be dispatched with the result of the 2610 * request. The message data contains three keys: 2611 * - "url" returns the anchor's href attribute. 2612 * - "title" returns the anchor's text. 2613 * - "src" returns the image's src attribute. 2614 */ 2615 public void requestFocusNodeHref(Message hrefMsg) { 2616 checkThread(); 2617 if (hrefMsg == null) { 2618 return; 2619 } 2620 int contentX = viewToContentX(mLastTouchX + mScrollX); 2621 int contentY = viewToContentY(mLastTouchY + mScrollY); 2622 if (nativeHasCursorNode()) { 2623 Rect cursorBounds = nativeGetCursorRingBounds(); 2624 if (!cursorBounds.contains(contentX, contentY)) { 2625 int slop = viewToContentDimension(mNavSlop); 2626 cursorBounds.inset(-slop, -slop); 2627 if (cursorBounds.contains(contentX, contentY)) { 2628 contentX = (int) cursorBounds.centerX(); 2629 contentY = (int) cursorBounds.centerY(); 2630 } 2631 } 2632 } 2633 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2634 contentX, contentY, hrefMsg); 2635 } 2636 2637 /** 2638 * Request the url of the image last touched by the user. msg will be sent 2639 * to its target with a String representing the url as its object. 2640 * 2641 * @param msg This message will be dispatched with the result of the request 2642 * as the data member with "url" as key. The result can be null. 2643 */ 2644 public void requestImageRef(Message msg) { 2645 checkThread(); 2646 if (0 == mNativeClass) return; // client isn't initialized 2647 int contentX = viewToContentX(mLastTouchX + mScrollX); 2648 int contentY = viewToContentY(mLastTouchY + mScrollY); 2649 String ref = nativeImageURI(contentX, contentY); 2650 Bundle data = msg.getData(); 2651 data.putString("url", ref); 2652 msg.setData(data); 2653 msg.sendToTarget(); 2654 } 2655 2656 static int pinLoc(int x, int viewMax, int docMax) { 2657// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2658 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2659 // pin the short document to the top/left of the screen 2660 x = 0; 2661// Log.d(LOGTAG, "--- center " + x); 2662 } else if (x < 0) { 2663 x = 0; 2664// Log.d(LOGTAG, "--- zero"); 2665 } else if (x + viewMax > docMax) { 2666 x = docMax - viewMax; 2667// Log.d(LOGTAG, "--- pin " + x); 2668 } 2669 return x; 2670 } 2671 2672 // Expects x in view coordinates 2673 int pinLocX(int x) { 2674 if (mInOverScrollMode) return x; 2675 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2676 } 2677 2678 // Expects y in view coordinates 2679 int pinLocY(int y) { 2680 if (mInOverScrollMode) return y; 2681 return pinLoc(y, getViewHeightWithTitle(), 2682 computeRealVerticalScrollRange() + getTitleHeight()); 2683 } 2684 2685 /** 2686 * A title bar which is embedded in this WebView, and scrolls along with it 2687 * vertically, but not horizontally. 2688 */ 2689 private View mTitleBar; 2690 2691 /** 2692 * the title bar rendering gravity 2693 */ 2694 private int mTitleGravity; 2695 2696 /** 2697 * Add or remove a title bar to be embedded into the WebView, and scroll 2698 * along with it vertically, while remaining in view horizontally. Pass 2699 * null to remove the title bar from the WebView, and return to drawing 2700 * the WebView normally without translating to account for the title bar. 2701 * @hide 2702 */ 2703 public void setEmbeddedTitleBar(View v) { 2704 if (mTitleBar == v) return; 2705 if (mTitleBar != null) { 2706 removeView(mTitleBar); 2707 } 2708 if (null != v) { 2709 addView(v, new AbsoluteLayout.LayoutParams( 2710 ViewGroup.LayoutParams.MATCH_PARENT, 2711 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2712 } 2713 mTitleBar = v; 2714 } 2715 2716 /** 2717 * Set where to render the embedded title bar 2718 * NO_GRAVITY at the top of the page 2719 * TOP at the top of the screen 2720 * @hide 2721 */ 2722 public void setTitleBarGravity(int gravity) { 2723 mTitleGravity = gravity; 2724 // force refresh 2725 invalidate(); 2726 } 2727 2728 /** 2729 * Given a distance in view space, convert it to content space. Note: this 2730 * does not reflect translation, just scaling, so this should not be called 2731 * with coordinates, but should be called for dimensions like width or 2732 * height. 2733 */ 2734 private int viewToContentDimension(int d) { 2735 return Math.round(d * mZoomManager.getInvScale()); 2736 } 2737 2738 /** 2739 * Given an x coordinate in view space, convert it to content space. Also 2740 * may be used for absolute heights (such as for the WebTextView's 2741 * textSize, which is unaffected by the height of the title bar). 2742 */ 2743 /*package*/ int viewToContentX(int x) { 2744 return viewToContentDimension(x); 2745 } 2746 2747 /** 2748 * Given a y coordinate in view space, convert it to content space. 2749 * Takes into account the height of the title bar if there is one 2750 * embedded into the WebView. 2751 */ 2752 /*package*/ int viewToContentY(int y) { 2753 return viewToContentDimension(y - getTitleHeight()); 2754 } 2755 2756 /** 2757 * Given a x coordinate in view space, convert it to content space. 2758 * Returns the result as a float. 2759 */ 2760 private float viewToContentXf(int x) { 2761 return x * mZoomManager.getInvScale(); 2762 } 2763 2764 /** 2765 * Given a y coordinate in view space, convert it to content space. 2766 * Takes into account the height of the title bar if there is one 2767 * embedded into the WebView. Returns the result as a float. 2768 */ 2769 private float viewToContentYf(int y) { 2770 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2771 } 2772 2773 /** 2774 * Given a distance in content space, convert it to view space. Note: this 2775 * does not reflect translation, just scaling, so this should not be called 2776 * with coordinates, but should be called for dimensions like width or 2777 * height. 2778 */ 2779 /*package*/ int contentToViewDimension(int d) { 2780 return Math.round(d * mZoomManager.getScale()); 2781 } 2782 2783 /** 2784 * Given an x coordinate in content space, convert it to view 2785 * space. 2786 */ 2787 /*package*/ int contentToViewX(int x) { 2788 return contentToViewDimension(x); 2789 } 2790 2791 /** 2792 * Given a y coordinate in content space, convert it to view 2793 * space. Takes into account the height of the title bar. 2794 */ 2795 /*package*/ int contentToViewY(int y) { 2796 return contentToViewDimension(y) + getTitleHeight(); 2797 } 2798 2799 private Rect contentToViewRect(Rect x) { 2800 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2801 contentToViewX(x.right), contentToViewY(x.bottom)); 2802 } 2803 2804 /* To invalidate a rectangle in content coordinates, we need to transform 2805 the rect into view coordinates, so we can then call invalidate(...). 2806 2807 Normally, we would just call contentToView[XY](...), which eventually 2808 calls Math.round(coordinate * mActualScale). However, for invalidates, 2809 we need to account for the slop that occurs with antialiasing. To 2810 address that, we are a little more liberal in the size of the rect that 2811 we invalidate. 2812 2813 This liberal calculation calls floor() for the top/left, and ceil() for 2814 the bottom/right coordinates. This catches the possible extra pixels of 2815 antialiasing that we might have missed with just round(). 2816 */ 2817 2818 // Called by JNI to invalidate the View, given rectangle coordinates in 2819 // content space 2820 private void viewInvalidate(int l, int t, int r, int b) { 2821 final float scale = mZoomManager.getScale(); 2822 final int dy = getTitleHeight(); 2823 invalidate((int)Math.floor(l * scale), 2824 (int)Math.floor(t * scale) + dy, 2825 (int)Math.ceil(r * scale), 2826 (int)Math.ceil(b * scale) + dy); 2827 } 2828 2829 // Called by JNI to invalidate the View after a delay, given rectangle 2830 // coordinates in content space 2831 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2832 final float scale = mZoomManager.getScale(); 2833 final int dy = getTitleHeight(); 2834 postInvalidateDelayed(delay, 2835 (int)Math.floor(l * scale), 2836 (int)Math.floor(t * scale) + dy, 2837 (int)Math.ceil(r * scale), 2838 (int)Math.ceil(b * scale) + dy); 2839 } 2840 2841 private void invalidateContentRect(Rect r) { 2842 viewInvalidate(r.left, r.top, r.right, r.bottom); 2843 } 2844 2845 // stop the scroll animation, and don't let a subsequent fling add 2846 // to the existing velocity 2847 private void abortAnimation() { 2848 mScroller.abortAnimation(); 2849 mLastVelocity = 0; 2850 } 2851 2852 /* call from webcoreview.draw(), so we're still executing in the UI thread 2853 */ 2854 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2855 2856 // premature data from webkit, ignore 2857 if ((w | h) == 0) { 2858 return; 2859 } 2860 2861 // don't abort a scroll animation if we didn't change anything 2862 if (mContentWidth != w || mContentHeight != h) { 2863 // record new dimensions 2864 mContentWidth = w; 2865 mContentHeight = h; 2866 // If history Picture is drawn, don't update scroll. They will be 2867 // updated when we get out of that mode. 2868 if (!mDrawHistory) { 2869 // repin our scroll, taking into account the new content size 2870 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2871 if (!mScroller.isFinished()) { 2872 // We are in the middle of a scroll. Repin the final scroll 2873 // position. 2874 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2875 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2876 } 2877 } 2878 } 2879 contentSizeChanged(updateLayout); 2880 } 2881 2882 // Used to avoid sending many visible rect messages. 2883 private Rect mLastVisibleRectSent = new Rect(); 2884 private Rect mLastGlobalRect = new Rect(); 2885 private Rect mVisibleRect = new Rect(); 2886 private Rect mGlobalVisibleRect = new Rect(); 2887 private Point mScrollOffset = new Point(); 2888 2889 Rect sendOurVisibleRect() { 2890 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2891 calcOurContentVisibleRect(mVisibleRect); 2892 // Rect.equals() checks for null input. 2893 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 2894 if (!mBlockWebkitViewMessages) { 2895 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 2896 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2897 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2898 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 2899 } 2900 mLastVisibleRectSent.set(mVisibleRect); 2901 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2902 } 2903 if (getGlobalVisibleRect(mGlobalVisibleRect) 2904 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 2905 if (DebugFlags.WEB_VIEW) { 2906 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 2907 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 2908 + mGlobalVisibleRect.bottom); 2909 } 2910 // TODO: the global offset is only used by windowRect() 2911 // in ChromeClientAndroid ; other clients such as touch 2912 // and mouse events could return view + screen relative points. 2913 if (!mBlockWebkitViewMessages) { 2914 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 2915 } 2916 mLastGlobalRect.set(mGlobalVisibleRect); 2917 } 2918 return mVisibleRect; 2919 } 2920 2921 private Point mGlobalVisibleOffset = new Point(); 2922 // Sets r to be the visible rectangle of our webview in view coordinates 2923 private void calcOurVisibleRect(Rect r) { 2924 getGlobalVisibleRect(r, mGlobalVisibleOffset); 2925 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 2926 } 2927 2928 // Sets r to be our visible rectangle in content coordinates 2929 private void calcOurContentVisibleRect(Rect r) { 2930 calcOurVisibleRect(r); 2931 r.left = viewToContentX(r.left); 2932 // viewToContentY will remove the total height of the title bar. Add 2933 // the visible height back in to account for the fact that if the title 2934 // bar is partially visible, the part of the visible rect which is 2935 // displaying our content is displaced by that amount. 2936 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2937 r.right = viewToContentX(r.right); 2938 r.bottom = viewToContentY(r.bottom); 2939 } 2940 2941 private Rect mContentVisibleRect = new Rect(); 2942 // Sets r to be our visible rectangle in content coordinates. We use this 2943 // method on the native side to compute the position of the fixed layers. 2944 // Uses floating coordinates (necessary to correctly place elements when 2945 // the scale factor is not 1) 2946 private void calcOurContentVisibleRectF(RectF r) { 2947 calcOurVisibleRect(mContentVisibleRect); 2948 r.left = viewToContentXf(mContentVisibleRect.left); 2949 // viewToContentY will remove the total height of the title bar. Add 2950 // the visible height back in to account for the fact that if the title 2951 // bar is partially visible, the part of the visible rect which is 2952 // displaying our content is displaced by that amount. 2953 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 2954 r.right = viewToContentXf(mContentVisibleRect.right); 2955 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 2956 } 2957 2958 static class ViewSizeData { 2959 int mWidth; 2960 int mHeight; 2961 float mHeightWidthRatio; 2962 int mActualViewHeight; 2963 int mTextWrapWidth; 2964 int mAnchorX; 2965 int mAnchorY; 2966 float mScale; 2967 boolean mIgnoreHeight; 2968 } 2969 2970 /** 2971 * Compute unzoomed width and height, and if they differ from the last 2972 * values we sent, send them to webkit (to be used as new viewport) 2973 * 2974 * @param force ensures that the message is sent to webkit even if the width 2975 * or height has not changed since the last message 2976 * 2977 * @return true if new values were sent 2978 */ 2979 boolean sendViewSizeZoom(boolean force) { 2980 if (mBlockWebkitViewMessages) return false; 2981 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2982 2983 int viewWidth = getViewWidth(); 2984 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2985 // This height could be fixed and be different from actual visible height. 2986 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2987 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2988 // Make the ratio more accurate than (newHeight / newWidth), since the 2989 // latter both are calculated and rounded. 2990 float heightWidthRatio = (float) viewHeight / viewWidth; 2991 /* 2992 * Because the native side may have already done a layout before the 2993 * View system was able to measure us, we have to send a height of 0 to 2994 * remove excess whitespace when we grow our width. This will trigger a 2995 * layout and a change in content size. This content size change will 2996 * mean that contentSizeChanged will either call this method directly or 2997 * indirectly from onSizeChanged. 2998 */ 2999 if (newWidth > mLastWidthSent && mWrapContent) { 3000 newHeight = 0; 3001 heightWidthRatio = 0; 3002 } 3003 // Actual visible content height. 3004 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3005 // Avoid sending another message if the dimensions have not changed. 3006 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3007 actualViewHeight != mLastActualHeightSent) { 3008 ViewSizeData data = new ViewSizeData(); 3009 data.mWidth = newWidth; 3010 data.mHeight = newHeight; 3011 data.mHeightWidthRatio = heightWidthRatio; 3012 data.mActualViewHeight = actualViewHeight; 3013 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3014 data.mScale = mZoomManager.getScale(); 3015 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3016 && !mHeightCanMeasure; 3017 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3018 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3019 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3020 mLastWidthSent = newWidth; 3021 mLastHeightSent = newHeight; 3022 mLastActualHeightSent = actualViewHeight; 3023 mZoomManager.clearDocumentAnchor(); 3024 return true; 3025 } 3026 return false; 3027 } 3028 3029 /** 3030 * Update the double-tap zoom. 3031 */ 3032 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3033 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3034 } 3035 3036 private int computeRealHorizontalScrollRange() { 3037 if (mDrawHistory) { 3038 return mHistoryWidth; 3039 } else { 3040 // to avoid rounding error caused unnecessary scrollbar, use floor 3041 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3042 } 3043 } 3044 3045 @Override 3046 protected int computeHorizontalScrollRange() { 3047 int range = computeRealHorizontalScrollRange(); 3048 3049 // Adjust reported range if overscrolled to compress the scroll bars 3050 final int scrollX = mScrollX; 3051 final int overscrollRight = computeMaxScrollX(); 3052 if (scrollX < 0) { 3053 range -= scrollX; 3054 } else if (scrollX > overscrollRight) { 3055 range += scrollX - overscrollRight; 3056 } 3057 3058 return range; 3059 } 3060 3061 @Override 3062 protected int computeHorizontalScrollOffset() { 3063 return Math.max(mScrollX, 0); 3064 } 3065 3066 private int computeRealVerticalScrollRange() { 3067 if (mDrawHistory) { 3068 return mHistoryHeight; 3069 } else { 3070 // to avoid rounding error caused unnecessary scrollbar, use floor 3071 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3072 } 3073 } 3074 3075 @Override 3076 protected int computeVerticalScrollRange() { 3077 int range = computeRealVerticalScrollRange(); 3078 3079 // Adjust reported range if overscrolled to compress the scroll bars 3080 final int scrollY = mScrollY; 3081 final int overscrollBottom = computeMaxScrollY(); 3082 if (scrollY < 0) { 3083 range -= scrollY; 3084 } else if (scrollY > overscrollBottom) { 3085 range += scrollY - overscrollBottom; 3086 } 3087 3088 return range; 3089 } 3090 3091 @Override 3092 protected int computeVerticalScrollOffset() { 3093 return Math.max(mScrollY - getTitleHeight(), 0); 3094 } 3095 3096 @Override 3097 protected int computeVerticalScrollExtent() { 3098 return getViewHeight(); 3099 } 3100 3101 /** @hide */ 3102 @Override 3103 protected void onDrawVerticalScrollBar(Canvas canvas, 3104 Drawable scrollBar, 3105 int l, int t, int r, int b) { 3106 if (mScrollY < 0) { 3107 t -= mScrollY; 3108 } 3109 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3110 scrollBar.draw(canvas); 3111 } 3112 3113 @Override 3114 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3115 boolean clampedY) { 3116 // Special-case layer scrolling so that we do not trigger normal scroll 3117 // updating. 3118 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3119 scrollLayerTo(scrollX, scrollY); 3120 return; 3121 } 3122 mInOverScrollMode = false; 3123 int maxX = computeMaxScrollX(); 3124 int maxY = computeMaxScrollY(); 3125 if (maxX == 0) { 3126 // do not over scroll x if the page just fits the screen 3127 scrollX = pinLocX(scrollX); 3128 } else if (scrollX < 0 || scrollX > maxX) { 3129 mInOverScrollMode = true; 3130 } 3131 if (scrollY < 0 || scrollY > maxY) { 3132 mInOverScrollMode = true; 3133 } 3134 3135 int oldX = mScrollX; 3136 int oldY = mScrollY; 3137 3138 super.scrollTo(scrollX, scrollY); 3139 3140 if (mOverScrollGlow != null) { 3141 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3142 } 3143 } 3144 3145 /** 3146 * Get the url for the current page. This is not always the same as the url 3147 * passed to WebViewClient.onPageStarted because although the load for 3148 * that url has begun, the current page may not have changed. 3149 * @return The url for the current page. 3150 */ 3151 public String getUrl() { 3152 checkThread(); 3153 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3154 return h != null ? h.getUrl() : null; 3155 } 3156 3157 /** 3158 * Get the original url for the current page. This is not always the same 3159 * as the url passed to WebViewClient.onPageStarted because although the 3160 * load for that url has begun, the current page may not have changed. 3161 * Also, there may have been redirects resulting in a different url to that 3162 * originally requested. 3163 * @return The url that was originally requested for the current page. 3164 */ 3165 public String getOriginalUrl() { 3166 checkThread(); 3167 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3168 return h != null ? h.getOriginalUrl() : null; 3169 } 3170 3171 /** 3172 * Get the title for the current page. This is the title of the current page 3173 * until WebViewClient.onReceivedTitle is called. 3174 * @return The title for the current page. 3175 */ 3176 public String getTitle() { 3177 checkThread(); 3178 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3179 return h != null ? h.getTitle() : null; 3180 } 3181 3182 /** 3183 * Get the favicon for the current page. This is the favicon of the current 3184 * page until WebViewClient.onReceivedIcon is called. 3185 * @return The favicon for the current page. 3186 */ 3187 public Bitmap getFavicon() { 3188 checkThread(); 3189 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3190 return h != null ? h.getFavicon() : null; 3191 } 3192 3193 /** 3194 * Get the touch icon url for the apple-touch-icon <link> element, or 3195 * a URL on this site's server pointing to the standard location of a 3196 * touch icon. 3197 * @hide 3198 */ 3199 public String getTouchIconUrl() { 3200 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3201 return h != null ? h.getTouchIconUrl() : null; 3202 } 3203 3204 /** 3205 * Get the progress for the current page. 3206 * @return The progress for the current page between 0 and 100. 3207 */ 3208 public int getProgress() { 3209 checkThread(); 3210 return mCallbackProxy.getProgress(); 3211 } 3212 3213 /** 3214 * @return the height of the HTML content. 3215 */ 3216 public int getContentHeight() { 3217 checkThread(); 3218 return mContentHeight; 3219 } 3220 3221 /** 3222 * @return the width of the HTML content. 3223 * @hide 3224 */ 3225 public int getContentWidth() { 3226 return mContentWidth; 3227 } 3228 3229 /** 3230 * @hide 3231 */ 3232 public int getPageBackgroundColor() { 3233 return nativeGetBackgroundColor(); 3234 } 3235 3236 /** 3237 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3238 * is a global requests, not restricted to just this webview. This can be 3239 * useful if the application has been paused. 3240 */ 3241 public void pauseTimers() { 3242 checkThread(); 3243 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3244 } 3245 3246 /** 3247 * Resume all layout, parsing, and JavaScript timers for all webviews. 3248 * This will resume dispatching all timers. 3249 */ 3250 public void resumeTimers() { 3251 checkThread(); 3252 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3253 } 3254 3255 /** 3256 * Call this to pause any extra processing associated with this WebView and 3257 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3258 * is taken offscreen, this could be called to reduce unnecessary CPU or 3259 * network traffic. When the WebView is again "active", call onResume(). 3260 * 3261 * Note that this differs from pauseTimers(), which affects all WebViews. 3262 */ 3263 public void onPause() { 3264 checkThread(); 3265 if (!mIsPaused) { 3266 mIsPaused = true; 3267 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3268 // We want to pause the current playing video when switching out 3269 // from the current WebView/tab. 3270 if (mHTML5VideoViewProxy != null) { 3271 mHTML5VideoViewProxy.pauseAndDispatch(); 3272 } 3273 if (mNativeClass != 0) { 3274 nativeSetPauseDrawing(mNativeClass, true); 3275 } 3276 } 3277 } 3278 3279 @Override 3280 protected void onWindowVisibilityChanged(int visibility) { 3281 super.onWindowVisibilityChanged(visibility); 3282 updateDrawingState(); 3283 } 3284 3285 void updateDrawingState() { 3286 if (mNativeClass == 0 || mIsPaused) return; 3287 if (getWindowVisibility() != VISIBLE) { 3288 nativeSetPauseDrawing(mNativeClass, true); 3289 } else if (getVisibility() != VISIBLE) { 3290 nativeSetPauseDrawing(mNativeClass, true); 3291 } else { 3292 nativeSetPauseDrawing(mNativeClass, false); 3293 } 3294 } 3295 3296 /** 3297 * Call this to resume a WebView after a previous call to onPause(). 3298 */ 3299 public void onResume() { 3300 checkThread(); 3301 if (mIsPaused) { 3302 mIsPaused = false; 3303 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3304 if (mNativeClass != 0) { 3305 nativeSetPauseDrawing(mNativeClass, false); 3306 } 3307 } 3308 } 3309 3310 /** 3311 * Returns true if the view is paused, meaning onPause() was called. Calling 3312 * onResume() sets the paused state back to false. 3313 * @hide 3314 */ 3315 public boolean isPaused() { 3316 return mIsPaused; 3317 } 3318 3319 /** 3320 * Call this to inform the view that memory is low so that it can 3321 * free any available memory. 3322 */ 3323 public void freeMemory() { 3324 checkThread(); 3325 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3326 } 3327 3328 /** 3329 * Clear the resource cache. Note that the cache is per-application, so 3330 * this will clear the cache for all WebViews used. 3331 * 3332 * @param includeDiskFiles If false, only the RAM cache is cleared. 3333 */ 3334 public void clearCache(boolean includeDiskFiles) { 3335 checkThread(); 3336 // Note: this really needs to be a static method as it clears cache for all 3337 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3338 // we can't make this static. 3339 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3340 includeDiskFiles ? 1 : 0, 0); 3341 } 3342 3343 /** 3344 * Make sure that clearing the form data removes the adapter from the 3345 * currently focused textfield if there is one. 3346 */ 3347 public void clearFormData() { 3348 checkThread(); 3349 if (inEditingMode()) { 3350 mWebTextView.setAdapterCustom(null); 3351 } 3352 } 3353 3354 /** 3355 * Tell the WebView to clear its internal back/forward list. 3356 */ 3357 public void clearHistory() { 3358 checkThread(); 3359 mCallbackProxy.getBackForwardList().setClearPending(); 3360 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3361 } 3362 3363 /** 3364 * Clear the SSL preferences table stored in response to proceeding with SSL 3365 * certificate errors. 3366 */ 3367 public void clearSslPreferences() { 3368 checkThread(); 3369 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3370 } 3371 3372 /** 3373 * Return the WebBackForwardList for this WebView. This contains the 3374 * back/forward list for use in querying each item in the history stack. 3375 * This is a copy of the private WebBackForwardList so it contains only a 3376 * snapshot of the current state. Multiple calls to this method may return 3377 * different objects. The object returned from this method will not be 3378 * updated to reflect any new state. 3379 */ 3380 public WebBackForwardList copyBackForwardList() { 3381 checkThread(); 3382 return mCallbackProxy.getBackForwardList().clone(); 3383 } 3384 3385 /* 3386 * Highlight and scroll to the next occurance of String in findAll. 3387 * Wraps the page infinitely, and scrolls. Must be called after 3388 * calling findAll. 3389 * 3390 * @param forward Direction to search. 3391 */ 3392 public void findNext(boolean forward) { 3393 checkThread(); 3394 if (0 == mNativeClass) return; // client isn't initialized 3395 nativeFindNext(forward); 3396 } 3397 3398 /* 3399 * Find all instances of find on the page and highlight them. 3400 * @param find String to find. 3401 * @return int The number of occurances of the String "find" 3402 * that were found. 3403 */ 3404 public int findAll(String find) { 3405 checkThread(); 3406 if (0 == mNativeClass) return 0; // client isn't initialized 3407 int result = find != null ? nativeFindAll(find.toLowerCase(), 3408 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3409 invalidate(); 3410 mLastFind = find; 3411 return result; 3412 } 3413 3414 /** 3415 * Start an ActionMode for finding text in this WebView. Only works if this 3416 * WebView is attached to the view system. 3417 * @param text If non-null, will be the initial text to search for. 3418 * Otherwise, the last String searched for in this WebView will 3419 * be used to start. 3420 * @param showIme If true, show the IME, assuming the user will begin typing. 3421 * If false and text is non-null, perform a find all. 3422 * @return boolean True if the find dialog is shown, false otherwise. 3423 */ 3424 public boolean showFindDialog(String text, boolean showIme) { 3425 checkThread(); 3426 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3427 if (getParent() == null || startActionMode(callback) == null) { 3428 // Could not start the action mode, so end Find on page 3429 return false; 3430 } 3431 mCachedOverlappingActionModeHeight = -1; 3432 mFindCallback = callback; 3433 setFindIsUp(true); 3434 mFindCallback.setWebView(this); 3435 if (showIme) { 3436 mFindCallback.showSoftInput(); 3437 } else if (text != null) { 3438 mFindCallback.setText(text); 3439 mFindCallback.findAll(); 3440 return true; 3441 } 3442 if (text == null) { 3443 text = mLastFind; 3444 } 3445 if (text != null) { 3446 mFindCallback.setText(text); 3447 } 3448 return true; 3449 } 3450 3451 /** 3452 * Keep track of the find callback so that we can remove its titlebar if 3453 * necessary. 3454 */ 3455 private FindActionModeCallback mFindCallback; 3456 3457 /** 3458 * Toggle whether the find dialog is showing, for both native and Java. 3459 */ 3460 private void setFindIsUp(boolean isUp) { 3461 mFindIsUp = isUp; 3462 if (0 == mNativeClass) return; // client isn't initialized 3463 nativeSetFindIsUp(isUp); 3464 } 3465 3466 /** 3467 * Return the index of the currently highlighted match. 3468 */ 3469 int findIndex() { 3470 if (0 == mNativeClass) return -1; 3471 return nativeFindIndex(); 3472 } 3473 3474 // Used to know whether the find dialog is open. Affects whether 3475 // or not we draw the highlights for matches. 3476 private boolean mFindIsUp; 3477 3478 // Keep track of the last string sent, so we can search again when find is 3479 // reopened. 3480 private String mLastFind; 3481 3482 /** 3483 * Return the first substring consisting of the address of a physical 3484 * location. Currently, only addresses in the United States are detected, 3485 * and consist of: 3486 * - a house number 3487 * - a street name 3488 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3489 * - a city name 3490 * - a state or territory, either spelled out or two-letter abbr. 3491 * - an optional 5 digit or 9 digit zip code. 3492 * 3493 * All names must be correctly capitalized, and the zip code, if present, 3494 * must be valid for the state. The street type must be a standard USPS 3495 * spelling or abbreviation. The state or territory must also be spelled 3496 * or abbreviated using USPS standards. The house number may not exceed 3497 * five digits. 3498 * @param addr The string to search for addresses. 3499 * 3500 * @return the address, or if no address is found, return null. 3501 */ 3502 public static String findAddress(String addr) { 3503 checkThread(); 3504 return findAddress(addr, false); 3505 } 3506 3507 /** 3508 * @hide 3509 * Return the first substring consisting of the address of a physical 3510 * location. Currently, only addresses in the United States are detected, 3511 * and consist of: 3512 * - a house number 3513 * - a street name 3514 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3515 * - a city name 3516 * - a state or territory, either spelled out or two-letter abbr. 3517 * - an optional 5 digit or 9 digit zip code. 3518 * 3519 * Names are optionally capitalized, and the zip code, if present, 3520 * must be valid for the state. The street type must be a standard USPS 3521 * spelling or abbreviation. The state or territory must also be spelled 3522 * or abbreviated using USPS standards. The house number may not exceed 3523 * five digits. 3524 * @param addr The string to search for addresses. 3525 * @param caseInsensitive addr Set to true to make search ignore case. 3526 * 3527 * @return the address, or if no address is found, return null. 3528 */ 3529 public static String findAddress(String addr, boolean caseInsensitive) { 3530 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3531 } 3532 3533 /* 3534 * Clear the highlighting surrounding text matches created by findAll. 3535 */ 3536 public void clearMatches() { 3537 checkThread(); 3538 if (mNativeClass == 0) 3539 return; 3540 nativeSetFindIsEmpty(); 3541 invalidate(); 3542 } 3543 3544 /** 3545 * Called when the find ActionMode ends. 3546 */ 3547 void notifyFindDialogDismissed() { 3548 mFindCallback = null; 3549 mCachedOverlappingActionModeHeight = -1; 3550 if (mWebViewCore == null) { 3551 return; 3552 } 3553 clearMatches(); 3554 setFindIsUp(false); 3555 // Now that the dialog has been removed, ensure that we scroll to a 3556 // location that is not beyond the end of the page. 3557 pinScrollTo(mScrollX, mScrollY, false, 0); 3558 invalidate(); 3559 } 3560 3561 /** 3562 * Query the document to see if it contains any image references. The 3563 * message object will be dispatched with arg1 being set to 1 if images 3564 * were found and 0 if the document does not reference any images. 3565 * @param response The message that will be dispatched with the result. 3566 */ 3567 public void documentHasImages(Message response) { 3568 checkThread(); 3569 if (response == null) { 3570 return; 3571 } 3572 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3573 } 3574 3575 /** 3576 * Request the scroller to abort any ongoing animation 3577 * 3578 * @hide 3579 */ 3580 public void stopScroll() { 3581 mScroller.forceFinished(true); 3582 mLastVelocity = 0; 3583 } 3584 3585 @Override 3586 public void computeScroll() { 3587 if (mScroller.computeScrollOffset()) { 3588 int oldX = mScrollX; 3589 int oldY = mScrollY; 3590 int x = mScroller.getCurrX(); 3591 int y = mScroller.getCurrY(); 3592 invalidate(); // So we draw again 3593 3594 if (!mScroller.isFinished()) { 3595 int rangeX = computeMaxScrollX(); 3596 int rangeY = computeMaxScrollY(); 3597 int overflingDistance = mOverflingDistance; 3598 3599 // Use the layer's scroll data if needed. 3600 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3601 oldX = mScrollingLayerRect.left; 3602 oldY = mScrollingLayerRect.top; 3603 rangeX = mScrollingLayerRect.right; 3604 rangeY = mScrollingLayerRect.bottom; 3605 // No overscrolling for layers. 3606 overflingDistance = 0; 3607 } 3608 3609 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3610 rangeX, rangeY, 3611 overflingDistance, overflingDistance, false); 3612 3613 if (mOverScrollGlow != null) { 3614 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3615 } 3616 } else { 3617 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3618 mScrollX = x; 3619 mScrollY = y; 3620 } else { 3621 // Update the layer position instead of WebView. 3622 scrollLayerTo(x, y); 3623 } 3624 abortAnimation(); 3625 nativeSetIsScrolling(false); 3626 if (!mBlockWebkitViewMessages) { 3627 WebViewCore.resumePriority(); 3628 if (!mSelectingText) { 3629 WebViewCore.resumeUpdatePicture(mWebViewCore); 3630 } 3631 } 3632 if (oldX != mScrollX || oldY != mScrollY) { 3633 sendOurVisibleRect(); 3634 } 3635 } 3636 } else { 3637 super.computeScroll(); 3638 } 3639 } 3640 3641 private void scrollLayerTo(int x, int y) { 3642 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3643 return; 3644 } 3645 nativeScrollLayer(mScrollingLayer, x, y); 3646 mScrollingLayerRect.left = x; 3647 mScrollingLayerRect.top = y; 3648 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 3649 invalidate(); 3650 } 3651 3652 private static int computeDuration(int dx, int dy) { 3653 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3654 int duration = distance * 1000 / STD_SPEED; 3655 return Math.min(duration, MAX_DURATION); 3656 } 3657 3658 // helper to pin the scrollBy parameters (already in view coordinates) 3659 // returns true if the scroll was changed 3660 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3661 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3662 } 3663 // helper to pin the scrollTo parameters (already in view coordinates) 3664 // returns true if the scroll was changed 3665 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3666 x = pinLocX(x); 3667 y = pinLocY(y); 3668 int dx = x - mScrollX; 3669 int dy = y - mScrollY; 3670 3671 if ((dx | dy) == 0) { 3672 return false; 3673 } 3674 abortAnimation(); 3675 if (animate) { 3676 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3677 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3678 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3679 awakenScrollBars(mScroller.getDuration()); 3680 invalidate(); 3681 } else { 3682 scrollTo(x, y); 3683 } 3684 return true; 3685 } 3686 3687 // Scale from content to view coordinates, and pin. 3688 // Also called by jni webview.cpp 3689 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3690 if (mDrawHistory) { 3691 // disallow WebView to change the scroll position as History Picture 3692 // is used in the view system. 3693 // TODO: as we switchOutDrawHistory when trackball or navigation 3694 // keys are hit, this should be safe. Right? 3695 return false; 3696 } 3697 cx = contentToViewDimension(cx); 3698 cy = contentToViewDimension(cy); 3699 if (mHeightCanMeasure) { 3700 // move our visible rect according to scroll request 3701 if (cy != 0) { 3702 Rect tempRect = new Rect(); 3703 calcOurVisibleRect(tempRect); 3704 tempRect.offset(cx, cy); 3705 requestRectangleOnScreen(tempRect); 3706 } 3707 // FIXME: We scroll horizontally no matter what because currently 3708 // ScrollView and ListView will not scroll horizontally. 3709 // FIXME: Why do we only scroll horizontally if there is no 3710 // vertical scroll? 3711// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3712 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3713 } else { 3714 return pinScrollBy(cx, cy, animate, 0); 3715 } 3716 } 3717 3718 /** 3719 * Called by CallbackProxy when the page starts loading. 3720 * @param url The URL of the page which has started loading. 3721 */ 3722 /* package */ void onPageStarted(String url) { 3723 // every time we start a new page, we want to reset the 3724 // WebView certificate: if the new site is secure, we 3725 // will reload it and get a new certificate set; 3726 // if the new site is not secure, the certificate must be 3727 // null, and that will be the case 3728 setCertificate(null); 3729 3730 // reset the flag since we set to true in if need after 3731 // loading is see onPageFinished(Url) 3732 mAccessibilityScriptInjected = false; 3733 } 3734 3735 /** 3736 * Called by CallbackProxy when the page finishes loading. 3737 * @param url The URL of the page which has finished loading. 3738 */ 3739 /* package */ void onPageFinished(String url) { 3740 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3741 // If the user is now on a different page, or has scrolled the page 3742 // past the point where the title bar is offscreen, ignore the 3743 // scroll request. 3744 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3745 && mScrollX == 0 && mScrollY == 0) { 3746 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3747 SLIDE_TITLE_DURATION); 3748 } 3749 mPageThatNeedsToSlideTitleBarOffScreen = null; 3750 } 3751 mZoomManager.onPageFinished(url); 3752 injectAccessibilityForUrl(url); 3753 } 3754 3755 /** 3756 * This method injects accessibility in the loaded document if accessibility 3757 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3758 * If no URL specific script is found or JavaScript is disabled we fallback to 3759 * the default {@link AccessibilityInjector} implementation. 3760 * </p> 3761 * If the URL has the "axs" paramter set to 1 it has already done the 3762 * script injection so we do nothing. If the parameter is set to 0 3763 * the URL opts out accessibility script injection so we fall back to 3764 * the default {@link AccessibilityInjector}. 3765 * </p> 3766 * Note: If the user has not opted-in the accessibility script injection no scripts 3767 * are injected rather the default {@link AccessibilityInjector} implementation 3768 * is used. 3769 * 3770 * @param url The URL loaded by this {@link WebView}. 3771 */ 3772 private void injectAccessibilityForUrl(String url) { 3773 if (mWebViewCore == null) { 3774 return; 3775 } 3776 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3777 3778 if (!accessibilityManager.isEnabled()) { 3779 // it is possible that accessibility was turned off between reloads 3780 ensureAccessibilityScriptInjectorInstance(false); 3781 return; 3782 } 3783 3784 if (!getSettings().getJavaScriptEnabled()) { 3785 // no JS so we fallback to the basic buil-in support 3786 ensureAccessibilityScriptInjectorInstance(true); 3787 return; 3788 } 3789 3790 // check the URL "axs" parameter to choose appropriate action 3791 int axsParameterValue = getAxsUrlParameterValue(url); 3792 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3793 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3794 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3795 if (onDeviceScriptInjectionEnabled) { 3796 ensureAccessibilityScriptInjectorInstance(false); 3797 // neither script injected nor script injection opted out => we inject 3798 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3799 // TODO: Set this flag after successfull script injection. Maybe upon injection 3800 // the chooser should update the meta tag and we check it to declare success 3801 mAccessibilityScriptInjected = true; 3802 } else { 3803 // injection disabled so we fallback to the basic built-in support 3804 ensureAccessibilityScriptInjectorInstance(true); 3805 } 3806 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3807 // injection opted out so we fallback to the basic buil-in support 3808 ensureAccessibilityScriptInjectorInstance(true); 3809 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3810 ensureAccessibilityScriptInjectorInstance(false); 3811 // the URL provides accessibility but we still need to add our generic script 3812 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3813 } else { 3814 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3815 } 3816 } 3817 3818 /** 3819 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3820 * 3821 * @param present True to ensure an insance, false to ensure no instance. 3822 */ 3823 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3824 if (present) { 3825 if (mAccessibilityInjector == null) { 3826 mAccessibilityInjector = new AccessibilityInjector(this); 3827 } 3828 } else { 3829 mAccessibilityInjector = null; 3830 } 3831 } 3832 3833 /** 3834 * Gets the "axs" URL parameter value. 3835 * 3836 * @param url A url to fetch the paramter from. 3837 * @return The parameter value if such, -1 otherwise. 3838 */ 3839 private int getAxsUrlParameterValue(String url) { 3840 if (mMatchAxsUrlParameterPattern == null) { 3841 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3842 } 3843 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3844 if (matcher.find()) { 3845 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3846 return Integer.parseInt(keyValuePair.split("=")[1]); 3847 } 3848 return -1; 3849 } 3850 3851 /** 3852 * The URL of a page that sent a message to scroll the title bar off screen. 3853 * 3854 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3855 * title bar off the screen. Sometimes, the scroll position is set before 3856 * the page finishes loading. Rather than scrolling while the page is still 3857 * loading, keep track of the URL and new scroll position so we can perform 3858 * the scroll once the page finishes loading. 3859 */ 3860 private String mPageThatNeedsToSlideTitleBarOffScreen; 3861 3862 /** 3863 * The destination Y scroll position to be used when the page finishes 3864 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3865 */ 3866 private int mYDistanceToSlideTitleOffScreen; 3867 3868 // scale from content to view coordinates, and pin 3869 // return true if pin caused the final x/y different than the request cx/cy, 3870 // and a future scroll may reach the request cx/cy after our size has 3871 // changed 3872 // return false if the view scroll to the exact position as it is requested, 3873 // where negative numbers are taken to mean 0 3874 private boolean setContentScrollTo(int cx, int cy) { 3875 if (mDrawHistory) { 3876 // disallow WebView to change the scroll position as History Picture 3877 // is used in the view system. 3878 // One known case where this is called is that WebCore tries to 3879 // restore the scroll position. As history Picture already uses the 3880 // saved scroll position, it is ok to skip this. 3881 return false; 3882 } 3883 int vx; 3884 int vy; 3885 if ((cx | cy) == 0) { 3886 // If the page is being scrolled to (0,0), do not add in the title 3887 // bar's height, and simply scroll to (0,0). (The only other work 3888 // in contentToView_ is to multiply, so this would not change 0.) 3889 vx = 0; 3890 vy = 0; 3891 } else { 3892 vx = contentToViewX(cx); 3893 vy = contentToViewY(cy); 3894 } 3895// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3896// vx + " " + vy + "]"); 3897 // Some mobile sites attempt to scroll the title bar off the page by 3898 // scrolling to (0,1). If we are at the top left corner of the 3899 // page, assume this is an attempt to scroll off the title bar, and 3900 // animate the title bar off screen slowly enough that the user can see 3901 // it. 3902 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3903 && mTitleBar != null) { 3904 // FIXME: 100 should be defined somewhere as our max progress. 3905 if (getProgress() < 100) { 3906 // Wait to scroll the title bar off screen until the page has 3907 // finished loading. Keep track of the URL and the destination 3908 // Y position 3909 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3910 mYDistanceToSlideTitleOffScreen = vy; 3911 } else { 3912 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3913 } 3914 // Since we are animating, we have not yet reached the desired 3915 // scroll position. Do not return true to request another attempt 3916 return false; 3917 } 3918 pinScrollTo(vx, vy, false, 0); 3919 // If the request was to scroll to a negative coordinate, treat it as if 3920 // it was a request to scroll to 0 3921 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3922 return true; 3923 } else { 3924 return false; 3925 } 3926 } 3927 3928 // scale from content to view coordinates, and pin 3929 private void spawnContentScrollTo(int cx, int cy) { 3930 if (mDrawHistory) { 3931 // disallow WebView to change the scroll position as History Picture 3932 // is used in the view system. 3933 return; 3934 } 3935 int vx = contentToViewX(cx); 3936 int vy = contentToViewY(cy); 3937 pinScrollTo(vx, vy, true, 0); 3938 } 3939 3940 /** 3941 * These are from webkit, and are in content coordinate system (unzoomed) 3942 */ 3943 private void contentSizeChanged(boolean updateLayout) { 3944 // suppress 0,0 since we usually see real dimensions soon after 3945 // this avoids drawing the prev content in a funny place. If we find a 3946 // way to consolidate these notifications, this check may become 3947 // obsolete 3948 if ((mContentWidth | mContentHeight) == 0) { 3949 return; 3950 } 3951 3952 if (mHeightCanMeasure) { 3953 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3954 || updateLayout) { 3955 requestLayout(); 3956 } 3957 } else if (mWidthCanMeasure) { 3958 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3959 || updateLayout) { 3960 requestLayout(); 3961 } 3962 } else { 3963 // If we don't request a layout, try to send our view size to the 3964 // native side to ensure that WebCore has the correct dimensions. 3965 sendViewSizeZoom(false); 3966 } 3967 } 3968 3969 /** 3970 * Set the WebViewClient that will receive various notifications and 3971 * requests. This will replace the current handler. 3972 * @param client An implementation of WebViewClient. 3973 */ 3974 public void setWebViewClient(WebViewClient client) { 3975 checkThread(); 3976 mCallbackProxy.setWebViewClient(client); 3977 } 3978 3979 /** 3980 * Gets the WebViewClient 3981 * @return the current WebViewClient instance. 3982 * 3983 *@hide pending API council approval. 3984 */ 3985 public WebViewClient getWebViewClient() { 3986 return mCallbackProxy.getWebViewClient(); 3987 } 3988 3989 /** 3990 * Register the interface to be used when content can not be handled by 3991 * the rendering engine, and should be downloaded instead. This will replace 3992 * the current handler. 3993 * @param listener An implementation of DownloadListener. 3994 */ 3995 public void setDownloadListener(DownloadListener listener) { 3996 checkThread(); 3997 mCallbackProxy.setDownloadListener(listener); 3998 } 3999 4000 /** 4001 * Set the chrome handler. This is an implementation of WebChromeClient for 4002 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4003 * This will replace the current handler. 4004 * @param client An implementation of WebChromeClient. 4005 */ 4006 public void setWebChromeClient(WebChromeClient client) { 4007 checkThread(); 4008 mCallbackProxy.setWebChromeClient(client); 4009 } 4010 4011 /** 4012 * Gets the chrome handler. 4013 * @return the current WebChromeClient instance. 4014 * 4015 * @hide API council approval. 4016 */ 4017 public WebChromeClient getWebChromeClient() { 4018 return mCallbackProxy.getWebChromeClient(); 4019 } 4020 4021 /** 4022 * Set the back/forward list client. This is an implementation of 4023 * WebBackForwardListClient for handling new items and changes in the 4024 * history index. 4025 * @param client An implementation of WebBackForwardListClient. 4026 * {@hide} 4027 */ 4028 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4029 mCallbackProxy.setWebBackForwardListClient(client); 4030 } 4031 4032 /** 4033 * Gets the WebBackForwardListClient. 4034 * {@hide} 4035 */ 4036 public WebBackForwardListClient getWebBackForwardListClient() { 4037 return mCallbackProxy.getWebBackForwardListClient(); 4038 } 4039 4040 /** 4041 * Set the Picture listener. This is an interface used to receive 4042 * notifications of a new Picture. 4043 * @param listener An implementation of WebView.PictureListener. 4044 * @deprecated This method is now obsolete. 4045 */ 4046 @Deprecated 4047 public void setPictureListener(PictureListener listener) { 4048 checkThread(); 4049 mPictureListener = listener; 4050 } 4051 4052 /** 4053 * {@hide} 4054 */ 4055 /* FIXME: Debug only! Remove for SDK! */ 4056 public void externalRepresentation(Message callback) { 4057 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4058 } 4059 4060 /** 4061 * {@hide} 4062 */ 4063 /* FIXME: Debug only! Remove for SDK! */ 4064 public void documentAsText(Message callback) { 4065 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4066 } 4067 4068 /** 4069 * This method injects the supplied Java object into the WebView. The 4070 * object is injected into the JavaScript context of the main frame, using 4071 * the supplied name. This allows the Java object to be accessed from 4072 * JavaScript. Note that that injected objects will not appear in 4073 * JavaScript until the page is next (re)loaded. For example: 4074 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4075 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4076 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4077 * <p><strong>IMPORTANT:</strong> 4078 * <ul> 4079 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4080 * the host application. This is a powerful feature, but also presents a 4081 * security risk. Use of this method in a WebView containing untrusted 4082 * content could allow an attacker to manipulate the host application in 4083 * unintended ways, executing Java code with the permissions of the host 4084 * application. Use extreme care when using this method in a WebView which 4085 * could contain untrusted content. 4086 * <li> JavaScript interacts with Java object on a private, background 4087 * thread of the WebView. Care is therefore required to maintain thread 4088 * safety.</li> 4089 * </ul></p> 4090 * @param object The Java object to inject into the WebView's JavaScript 4091 * context. Null values are ignored. 4092 * @param name The name used to expose the instance in JavaScript. 4093 */ 4094 public void addJavascriptInterface(Object object, String name) { 4095 checkThread(); 4096 if (object == null) { 4097 return; 4098 } 4099 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4100 arg.mObject = object; 4101 arg.mInterfaceName = name; 4102 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4103 } 4104 4105 /** 4106 * Removes a previously added JavaScript interface with the given name. 4107 * @param interfaceName The name of the interface to remove. 4108 */ 4109 public void removeJavascriptInterface(String interfaceName) { 4110 checkThread(); 4111 if (mWebViewCore != null) { 4112 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4113 arg.mInterfaceName = interfaceName; 4114 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4115 } 4116 } 4117 4118 /** 4119 * Return the WebSettings object used to control the settings for this 4120 * WebView. 4121 * @return A WebSettings object that can be used to control this WebView's 4122 * settings. 4123 */ 4124 public WebSettings getSettings() { 4125 checkThread(); 4126 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4127 } 4128 4129 /** 4130 * Return the list of currently loaded plugins. 4131 * @return The list of currently loaded plugins. 4132 * 4133 * @hide 4134 * @deprecated This was used for Gears, which has been deprecated. 4135 */ 4136 @Deprecated 4137 public static synchronized PluginList getPluginList() { 4138 checkThread(); 4139 return new PluginList(); 4140 } 4141 4142 /** 4143 * @hide 4144 * @deprecated This was used for Gears, which has been deprecated. 4145 */ 4146 @Deprecated 4147 public void refreshPlugins(boolean reloadOpenPages) { 4148 checkThread(); 4149 } 4150 4151 //------------------------------------------------------------------------- 4152 // Override View methods 4153 //------------------------------------------------------------------------- 4154 4155 @Override 4156 protected void finalize() throws Throwable { 4157 try { 4158 if (mNativeClass != 0) { 4159 mPrivateHandler.post(new Runnable() { 4160 @Override 4161 public void run() { 4162 destroy(); 4163 } 4164 }); 4165 } 4166 } finally { 4167 super.finalize(); 4168 } 4169 } 4170 4171 @Override 4172 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4173 if (child == mTitleBar) { 4174 // When drawing the title bar, move it horizontally to always show 4175 // at the top of the WebView. 4176 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4177 int newTop = 0; 4178 if (mTitleGravity == Gravity.NO_GRAVITY) { 4179 newTop = Math.min(0, mScrollY); 4180 } else if (mTitleGravity == Gravity.TOP) { 4181 newTop = mScrollY; 4182 } 4183 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4184 mTitleBar.setTop(newTop); 4185 } 4186 return super.drawChild(canvas, child, drawingTime); 4187 } 4188 4189 private void drawContent(Canvas canvas, boolean drawRings) { 4190 drawCoreAndCursorRing(canvas, mBackgroundColor, 4191 mDrawCursorRing && drawRings); 4192 } 4193 4194 /** 4195 * Draw the background when beyond bounds 4196 * @param canvas Canvas to draw into 4197 */ 4198 private void drawOverScrollBackground(Canvas canvas) { 4199 if (mOverScrollBackground == null) { 4200 mOverScrollBackground = new Paint(); 4201 Bitmap bm = BitmapFactory.decodeResource( 4202 mContext.getResources(), 4203 com.android.internal.R.drawable.status_bar_background); 4204 mOverScrollBackground.setShader(new BitmapShader(bm, 4205 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4206 mOverScrollBorder = new Paint(); 4207 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4208 mOverScrollBorder.setStrokeWidth(0); 4209 mOverScrollBorder.setColor(0xffbbbbbb); 4210 } 4211 4212 int top = 0; 4213 int right = computeRealHorizontalScrollRange(); 4214 int bottom = top + computeRealVerticalScrollRange(); 4215 // first draw the background and anchor to the top of the view 4216 canvas.save(); 4217 canvas.translate(mScrollX, mScrollY); 4218 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4219 - mScrollY, Region.Op.DIFFERENCE); 4220 canvas.drawPaint(mOverScrollBackground); 4221 canvas.restore(); 4222 // then draw the border 4223 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4224 // next clip the region for the content 4225 canvas.clipRect(0, top, right, bottom); 4226 } 4227 4228 @Override 4229 protected void onDraw(Canvas canvas) { 4230 // if mNativeClass is 0, the WebView is either destroyed or not 4231 // initialized. In either case, just draw the background color and return 4232 if (mNativeClass == 0) { 4233 canvas.drawColor(mBackgroundColor); 4234 return; 4235 } 4236 4237 // if both mContentWidth and mContentHeight are 0, it means there is no 4238 // valid Picture passed to WebView yet. This can happen when WebView 4239 // just starts. Draw the background and return. 4240 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4241 canvas.drawColor(mBackgroundColor); 4242 return; 4243 } 4244 4245 if (canvas.isHardwareAccelerated()) { 4246 if (mIncrementEGLContextHack == false) { 4247 mIncrementEGLContextHack = true; 4248 EGL10 egl = (EGL10) EGLContext.getEGL(); 4249 EGLDisplay eglDisplay = egl.eglGetDisplay(EGL_DEFAULT_DISPLAY); 4250 int[] version = new int[2]; 4251 egl.eglInitialize(eglDisplay, version); 4252 } 4253 mZoomManager.setHardwareAccelerated(); 4254 } 4255 4256 int saveCount = canvas.save(); 4257 if (mInOverScrollMode && !getSettings() 4258 .getUseWebViewBackgroundForOverscrollBackground()) { 4259 drawOverScrollBackground(canvas); 4260 } 4261 if (mTitleBar != null) { 4262 canvas.translate(0, getTitleHeight()); 4263 } 4264 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4265 && (mTouchMode == TOUCH_INIT_MODE 4266 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4267 || mTouchMode == TOUCH_SHORTPRESS_MODE 4268 || mTouchMode == TOUCH_DONE_MODE); 4269 boolean drawNativeRings = !drawJavaRings; 4270 if (USE_WEBKIT_RINGS) { 4271 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4272 } 4273 drawContent(canvas, drawNativeRings); 4274 canvas.restoreToCount(saveCount); 4275 4276 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4277 invalidate(); 4278 } 4279 mWebViewCore.signalRepaintDone(); 4280 4281 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4282 invalidate(); 4283 } 4284 4285 // paint the highlight in the end 4286 if (drawJavaRings) { 4287 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4288 if (delay < ViewConfiguration.getTapTimeout()) { 4289 Rect r = mTouchHighlightRegion.getBounds(); 4290 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4291 } else { 4292 if (mTouchHightlightPaint == null) { 4293 mTouchHightlightPaint = new Paint(); 4294 mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR); 4295 } 4296 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4297 Rect r = new Rect(); 4298 while (iter.next(r)) { 4299 canvas.drawRect(r, mTouchHightlightPaint); 4300 } 4301 } 4302 } 4303 if (DEBUG_TOUCH_HIGHLIGHT) { 4304 if (getSettings().getNavDump()) { 4305 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4306 if (mTouchCrossHairColor == null) { 4307 mTouchCrossHairColor = new Paint(); 4308 mTouchCrossHairColor.setColor(Color.RED); 4309 } 4310 canvas.drawLine(mTouchHighlightX - mNavSlop, 4311 mTouchHighlightY - mNavSlop, mTouchHighlightX 4312 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4313 + 1, mTouchCrossHairColor); 4314 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4315 mTouchHighlightY - mNavSlop, mTouchHighlightX 4316 - mNavSlop, 4317 mTouchHighlightY + mNavSlop + 1, 4318 mTouchCrossHairColor); 4319 } 4320 } 4321 } 4322 } 4323 4324 private void removeTouchHighlight() { 4325 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4326 mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS); 4327 setTouchHighlightRects(null); 4328 } 4329 4330 @Override 4331 public void setLayoutParams(ViewGroup.LayoutParams params) { 4332 if (params.height == LayoutParams.WRAP_CONTENT) { 4333 mWrapContent = true; 4334 } 4335 super.setLayoutParams(params); 4336 } 4337 4338 @Override 4339 public boolean performLongClick() { 4340 // performLongClick() is the result of a delayed message. If we switch 4341 // to windows overview, the WebView will be temporarily removed from the 4342 // view system. In that case, do nothing. 4343 if (getParent() == null) return false; 4344 4345 // A multi-finger gesture can look like a long press; make sure we don't take 4346 // long press actions if we're scaling. 4347 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4348 if (detector != null && detector.isInProgress()) { 4349 return false; 4350 } 4351 4352 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4353 // Send the click so that the textfield is in focus 4354 centerKeyPressOnTextField(); 4355 rebuildWebTextView(); 4356 } else { 4357 clearTextEntry(); 4358 } 4359 if (inEditingMode()) { 4360 // Since we just called rebuildWebTextView, the layout is not set 4361 // properly. Update it so it can correctly find the word to select. 4362 mWebTextView.ensureLayout(); 4363 // Provide a touch down event to WebTextView, which will allow it 4364 // to store the location to use in performLongClick. 4365 AbsoluteLayout.LayoutParams params 4366 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4367 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4368 mLastTouchTime, MotionEvent.ACTION_DOWN, 4369 mLastTouchX - params.x + mScrollX, 4370 mLastTouchY - params.y + mScrollY, 0); 4371 mWebTextView.dispatchTouchEvent(fake); 4372 return mWebTextView.performLongClick(); 4373 } 4374 if (mSelectingText) return false; // long click does nothing on selection 4375 /* if long click brings up a context menu, the super function 4376 * returns true and we're done. Otherwise, nothing happened when 4377 * the user clicked. */ 4378 if (super.performLongClick()) { 4379 return true; 4380 } 4381 /* In the case where the application hasn't already handled the long 4382 * click action, look for a word under the click. If one is found, 4383 * animate the text selection into view. 4384 * FIXME: no animation code yet */ 4385 final boolean isSelecting = selectText(); 4386 if (isSelecting) { 4387 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4388 } 4389 return isSelecting; 4390 } 4391 4392 /** 4393 * Select the word at the last click point. 4394 * 4395 * @hide pending API council approval 4396 */ 4397 public boolean selectText() { 4398 int x = viewToContentX(mLastTouchX + mScrollX); 4399 int y = viewToContentY(mLastTouchY + mScrollY); 4400 return selectText(x, y); 4401 } 4402 4403 /** 4404 * Select the word at the indicated content coordinates. 4405 */ 4406 boolean selectText(int x, int y) { 4407 if (!setUpSelect(true, x, y)) { 4408 return false; 4409 } 4410 nativeSetExtendSelection(); 4411 mDrawSelectionPointer = false; 4412 mTouchMode = TOUCH_DRAG_MODE; 4413 return true; 4414 } 4415 4416 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4417 4418 @Override 4419 protected void onConfigurationChanged(Configuration newConfig) { 4420 mCachedOverlappingActionModeHeight = -1; 4421 if (mSelectingText && mOrientation != newConfig.orientation) { 4422 selectionDone(); 4423 } 4424 mOrientation = newConfig.orientation; 4425 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4426 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4427 } 4428 } 4429 4430 /** 4431 * Keep track of the Callback so we can end its ActionMode or remove its 4432 * titlebar. 4433 */ 4434 private SelectActionModeCallback mSelectCallback; 4435 4436 // These values are possible options for didUpdateWebTextViewDimensions. 4437 private static final int FULLY_ON_SCREEN = 0; 4438 private static final int INTERSECTS_SCREEN = 1; 4439 private static final int ANYWHERE = 2; 4440 4441 /** 4442 * Check to see if the focused textfield/textarea is still on screen. If it 4443 * is, update the the dimensions and location of WebTextView. Otherwise, 4444 * remove the WebTextView. Should be called when the zoom level changes. 4445 * @param intersection How to determine whether the textfield/textarea is 4446 * still on screen. 4447 * @return boolean True if the textfield/textarea is still on screen and the 4448 * dimensions/location of WebTextView have been updated. 4449 */ 4450 private boolean didUpdateWebTextViewDimensions(int intersection) { 4451 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4452 Rect vBox = contentToViewRect(contentBounds); 4453 Rect visibleRect = new Rect(); 4454 calcOurVisibleRect(visibleRect); 4455 // If the textfield is on screen, place the WebTextView in 4456 // its new place, accounting for our new scroll/zoom values, 4457 // and adjust its textsize. 4458 boolean onScreen; 4459 switch (intersection) { 4460 case FULLY_ON_SCREEN: 4461 onScreen = visibleRect.contains(vBox); 4462 break; 4463 case INTERSECTS_SCREEN: 4464 onScreen = Rect.intersects(visibleRect, vBox); 4465 break; 4466 case ANYWHERE: 4467 onScreen = true; 4468 break; 4469 default: 4470 throw new AssertionError( 4471 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4472 } 4473 if (onScreen) { 4474 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4475 vBox.height()); 4476 mWebTextView.updateTextSize(); 4477 updateWebTextViewPadding(); 4478 return true; 4479 } else { 4480 // The textfield is now off screen. The user probably 4481 // was not zooming to see the textfield better. Remove 4482 // the WebTextView. If the user types a key, and the 4483 // textfield is still in focus, we will reconstruct 4484 // the WebTextView and scroll it back on screen. 4485 mWebTextView.remove(); 4486 return false; 4487 } 4488 } 4489 4490 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4491 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4492 if (mNativeClass == 0) 4493 return; 4494 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4495 isPictureAfterFirstLayout, registerPageSwapCallback); 4496 if (mHTML5VideoViewProxy != null) { 4497 mHTML5VideoViewProxy.setBaseLayer(layer); 4498 } 4499 } 4500 4501 int getBaseLayer() { 4502 if (mNativeClass == 0) { 4503 return 0; 4504 } 4505 return nativeGetBaseLayer(); 4506 } 4507 4508 private void onZoomAnimationStart() { 4509 // If it is in password mode, turn it off so it does not draw misplaced. 4510 if (inEditingMode()) { 4511 mWebTextView.setVisibility(INVISIBLE); 4512 } 4513 } 4514 4515 private void onZoomAnimationEnd() { 4516 // adjust the edit text view if needed 4517 if (inEditingMode() 4518 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4519 // If it is a password field, start drawing the WebTextView once 4520 // again. 4521 mWebTextView.setVisibility(VISIBLE); 4522 } 4523 } 4524 4525 void onFixedLengthZoomAnimationStart() { 4526 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4527 onZoomAnimationStart(); 4528 } 4529 4530 void onFixedLengthZoomAnimationEnd() { 4531 if (!mBlockWebkitViewMessages && !mSelectingText) { 4532 WebViewCore.resumeUpdatePicture(mWebViewCore); 4533 } 4534 onZoomAnimationEnd(); 4535 } 4536 4537 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4538 Paint.DITHER_FLAG | 4539 Paint.SUBPIXEL_TEXT_FLAG; 4540 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4541 Paint.DITHER_FLAG; 4542 4543 private final DrawFilter mZoomFilter = 4544 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4545 // If we need to trade better quality for speed, set mScrollFilter to null 4546 private final DrawFilter mScrollFilter = 4547 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4548 4549 private void drawCoreAndCursorRing(Canvas canvas, int color, 4550 boolean drawCursorRing) { 4551 if (mDrawHistory) { 4552 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4553 canvas.drawPicture(mHistoryPicture); 4554 return; 4555 } 4556 if (mNativeClass == 0) return; 4557 4558 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4559 boolean animateScroll = ((!mScroller.isFinished() 4560 || mVelocityTracker != null) 4561 && (mTouchMode != TOUCH_DRAG_MODE || 4562 mHeldMotionless != MOTIONLESS_TRUE)) 4563 || mDeferTouchMode == TOUCH_DRAG_MODE; 4564 if (mTouchMode == TOUCH_DRAG_MODE) { 4565 if (mHeldMotionless == MOTIONLESS_PENDING) { 4566 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4567 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4568 mHeldMotionless = MOTIONLESS_FALSE; 4569 } 4570 if (mHeldMotionless == MOTIONLESS_FALSE) { 4571 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4572 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4573 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4574 .obtainMessage(AWAKEN_SCROLL_BARS), 4575 ViewConfiguration.getScrollDefaultDelay()); 4576 mHeldMotionless = MOTIONLESS_PENDING; 4577 } 4578 } 4579 int saveCount = canvas.save(); 4580 if (animateZoom) { 4581 mZoomManager.animateZoom(canvas); 4582 } else if (!canvas.isHardwareAccelerated()) { 4583 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4584 } 4585 4586 boolean UIAnimationsRunning = false; 4587 // Currently for each draw we compute the animation values; 4588 // We may in the future decide to do that independently. 4589 if (mNativeClass != 0 && nativeEvaluateLayersAnimations(mNativeClass)) { 4590 UIAnimationsRunning = true; 4591 // If we have unfinished (or unstarted) animations, 4592 // we ask for a repaint. We only need to do this in software 4593 // rendering (with hardware rendering we already have a different 4594 // method of requesting a repaint) 4595 if (!canvas.isHardwareAccelerated()) 4596 invalidate(); 4597 } 4598 4599 // decide which adornments to draw 4600 int extras = DRAW_EXTRAS_NONE; 4601 if (mFindIsUp) { 4602 extras = DRAW_EXTRAS_FIND; 4603 } else if (mSelectingText && (!USE_JAVA_TEXT_SELECTION || DEBUG_TEXT_HANDLES)) { 4604 extras = DRAW_EXTRAS_SELECTION; 4605 nativeSetSelectionPointer(mNativeClass, 4606 mDrawSelectionPointer, 4607 mZoomManager.getInvScale(), mSelectX, mSelectY - getTitleHeight()); 4608 } else if (drawCursorRing) { 4609 extras = DRAW_EXTRAS_CURSOR_RING; 4610 } 4611 if (DebugFlags.WEB_VIEW) { 4612 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4613 + " mSelectingText=" + mSelectingText 4614 + " nativePageShouldHandleShiftAndArrows()=" 4615 + nativePageShouldHandleShiftAndArrows() 4616 + " animateZoom=" + animateZoom 4617 + " extras=" + extras); 4618 } 4619 4620 calcOurContentVisibleRectF(mVisibleContentRect); 4621 if (canvas.isHardwareAccelerated()) { 4622 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4623 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4624 4625 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4626 viewRectViewport, mVisibleContentRect, getScale(), extras); 4627 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4628 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4629 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4630 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4631 } 4632 4633 } else { 4634 DrawFilter df = null; 4635 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4636 df = mZoomFilter; 4637 } else if (animateScroll) { 4638 df = mScrollFilter; 4639 } 4640 canvas.setDrawFilter(df); 4641 // XXX: Revisit splitting content. Right now it causes a 4642 // synchronization problem with layers. 4643 int content = nativeDraw(canvas, mVisibleContentRect, color, 4644 extras, false); 4645 canvas.setDrawFilter(null); 4646 if (!mBlockWebkitViewMessages && content != 0) { 4647 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4648 } 4649 } 4650 4651 canvas.restoreToCount(saveCount); 4652 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4653 drawTextSelectionHandles(canvas); 4654 } 4655 4656 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4657 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4658 mTouchMode = TOUCH_SHORTPRESS_MODE; 4659 } 4660 } 4661 if (mFocusSizeChanged) { 4662 mFocusSizeChanged = false; 4663 // If we are zooming, this will get handled above, when the zoom 4664 // finishes. We also do not need to do this unless the WebTextView 4665 // is showing. With hardware acceleration, the pageSwapCallback() 4666 // updates the WebTextView position in sync with page swapping 4667 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4668 didUpdateWebTextViewDimensions(ANYWHERE); 4669 } 4670 } 4671 } 4672 4673 private void drawTextSelectionHandles(Canvas canvas) { 4674 if (mTextSelectionPaint == null) { 4675 mTextSelectionPaint = new Paint(); 4676 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4677 } 4678 mTextSelectionRegion.setEmpty(); 4679 nativeGetTextSelectionRegion(mNativeClass, mTextSelectionRegion); 4680 Rect r = new Rect(); 4681 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4682 Rect clip = canvas.getClipBounds(); 4683 while (iter.next(r)) { 4684 r.set(contentToViewDimension(r.left), 4685 contentToViewDimension(r.top), 4686 contentToViewDimension(r.right), 4687 contentToViewDimension(r.bottom)); 4688 if (r.intersect(clip)) { 4689 canvas.drawRect(r, mTextSelectionPaint); 4690 } 4691 } 4692 if (mSelectHandleLeft == null) { 4693 mSelectHandleLeft = mContext.getResources().getDrawable( 4694 com.android.internal.R.drawable.text_select_handle_left); 4695 } 4696 int[] handles = new int[4]; 4697 nativeGetSelectionHandles(mNativeClass, handles); 4698 int start_x = contentToViewDimension(handles[0]); 4699 int start_y = contentToViewDimension(handles[1]); 4700 int end_x = contentToViewDimension(handles[2]); 4701 int end_y = contentToViewDimension(handles[3]); 4702 // Magic formula copied from TextView 4703 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4704 mSelectHandleLeft.setBounds(start_x, start_y, 4705 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4706 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4707 if (mSelectHandleRight == null) { 4708 mSelectHandleRight = mContext.getResources().getDrawable( 4709 com.android.internal.R.drawable.text_select_handle_right); 4710 } 4711 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4712 mSelectHandleRight.setBounds(end_x, end_y, 4713 end_x + mSelectHandleRight.getIntrinsicWidth(), 4714 end_y + mSelectHandleRight.getIntrinsicHeight()); 4715 if (DEBUG_TEXT_HANDLES) { 4716 mSelectHandleLeft.setAlpha(125); 4717 mSelectHandleRight.setAlpha(125); 4718 } 4719 mSelectHandleLeft.draw(canvas); 4720 mSelectHandleRight.draw(canvas); 4721 } 4722 4723 // draw history 4724 private boolean mDrawHistory = false; 4725 private Picture mHistoryPicture = null; 4726 private int mHistoryWidth = 0; 4727 private int mHistoryHeight = 0; 4728 4729 // Only check the flag, can be called from WebCore thread 4730 boolean drawHistory() { 4731 return mDrawHistory; 4732 } 4733 4734 int getHistoryPictureWidth() { 4735 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4736 } 4737 4738 // Should only be called in UI thread 4739 void switchOutDrawHistory() { 4740 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4741 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4742 mDrawHistory = false; 4743 mHistoryPicture = null; 4744 invalidate(); 4745 int oldScrollX = mScrollX; 4746 int oldScrollY = mScrollY; 4747 mScrollX = pinLocX(mScrollX); 4748 mScrollY = pinLocY(mScrollY); 4749 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4750 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4751 } else { 4752 sendOurVisibleRect(); 4753 } 4754 } 4755 } 4756 4757 WebViewCore.CursorData cursorData() { 4758 WebViewCore.CursorData result = cursorDataNoPosition(); 4759 Point position = nativeCursorPosition(); 4760 result.mX = position.x; 4761 result.mY = position.y; 4762 return result; 4763 } 4764 4765 WebViewCore.CursorData cursorDataNoPosition() { 4766 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4767 result.mMoveGeneration = nativeMoveGeneration(); 4768 result.mFrame = nativeCursorFramePointer(); 4769 return result; 4770 } 4771 4772 /** 4773 * Delete text from start to end in the focused textfield. If there is no 4774 * focus, or if start == end, silently fail. If start and end are out of 4775 * order, swap them. 4776 * @param start Beginning of selection to delete. 4777 * @param end End of selection to delete. 4778 */ 4779 /* package */ void deleteSelection(int start, int end) { 4780 mTextGeneration++; 4781 WebViewCore.TextSelectionData data 4782 = new WebViewCore.TextSelectionData(start, end); 4783 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4784 data); 4785 } 4786 4787 /** 4788 * Set the selection to (start, end) in the focused textfield. If start and 4789 * end are out of order, swap them. 4790 * @param start Beginning of selection. 4791 * @param end End of selection. 4792 */ 4793 /* package */ void setSelection(int start, int end) { 4794 if (mWebViewCore != null) { 4795 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4796 } 4797 } 4798 4799 @Override 4800 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4801 InputConnection connection = super.onCreateInputConnection(outAttrs); 4802 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4803 return connection; 4804 } 4805 4806 /** 4807 * Called in response to a message from webkit telling us that the soft 4808 * keyboard should be launched. 4809 */ 4810 private void displaySoftKeyboard(boolean isTextView) { 4811 InputMethodManager imm = (InputMethodManager) 4812 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4813 4814 // bring it back to the default level scale so that user can enter text 4815 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4816 if (zoom) { 4817 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4818 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4819 } 4820 if (isTextView) { 4821 rebuildWebTextView(); 4822 if (inEditingMode()) { 4823 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4824 if (zoom) { 4825 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4826 } 4827 return; 4828 } 4829 } 4830 // Used by plugins and contentEditable. 4831 // Also used if the navigation cache is out of date, and 4832 // does not recognize that a textfield is in focus. In that 4833 // case, use WebView as the targeted view. 4834 // see http://b/issue?id=2457459 4835 imm.showSoftInput(this, 0); 4836 } 4837 4838 // Called by WebKit to instruct the UI to hide the keyboard 4839 private void hideSoftKeyboard() { 4840 InputMethodManager imm = InputMethodManager.peekInstance(); 4841 if (imm != null && (imm.isActive(this) 4842 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4843 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4844 } 4845 } 4846 4847 /* 4848 * This method checks the current focus and cursor and potentially rebuilds 4849 * mWebTextView to have the appropriate properties, such as password, 4850 * multiline, and what text it contains. It also removes it if necessary. 4851 */ 4852 /* package */ void rebuildWebTextView() { 4853 // If the WebView does not have focus, do nothing until it gains focus. 4854 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4855 return; 4856 } 4857 boolean alreadyThere = inEditingMode(); 4858 // inEditingMode can only return true if mWebTextView is non-null, 4859 // so we can safely call remove() if (alreadyThere) 4860 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4861 if (alreadyThere) { 4862 mWebTextView.remove(); 4863 } 4864 return; 4865 } 4866 // At this point, we know we have found an input field, so go ahead 4867 // and create the WebTextView if necessary. 4868 if (mWebTextView == null) { 4869 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4870 // Initialize our generation number. 4871 mTextGeneration = 0; 4872 } 4873 mWebTextView.updateTextSize(); 4874 updateWebTextViewPosition(); 4875 String text = nativeFocusCandidateText(); 4876 int nodePointer = nativeFocusCandidatePointer(); 4877 // This needs to be called before setType, which may call 4878 // requestFormData, and it needs to have the correct nodePointer. 4879 mWebTextView.setNodePointer(nodePointer); 4880 mWebTextView.setType(nativeFocusCandidateType()); 4881 // Gravity needs to be set after setType 4882 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 4883 if (null == text) { 4884 if (DebugFlags.WEB_VIEW) { 4885 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4886 } 4887 text = ""; 4888 } 4889 mWebTextView.setTextAndKeepSelection(text); 4890 InputMethodManager imm = InputMethodManager.peekInstance(); 4891 if (imm != null && imm.isActive(mWebTextView)) { 4892 imm.restartInput(mWebTextView); 4893 mWebTextView.clearComposingText(); 4894 } 4895 if (isFocused()) { 4896 mWebTextView.requestFocus(); 4897 } 4898 } 4899 4900 private void updateWebTextViewPosition() { 4901 Rect visibleRect = new Rect(); 4902 calcOurContentVisibleRect(visibleRect); 4903 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4904 // should be in content coordinates. 4905 Rect bounds = nativeFocusCandidateNodeBounds(); 4906 Rect vBox = contentToViewRect(bounds); 4907 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4908 if (!Rect.intersects(bounds, visibleRect)) { 4909 revealSelection(); 4910 } 4911 updateWebTextViewPadding(); 4912 } 4913 4914 /** 4915 * Update the padding of mWebTextView based on the native textfield/textarea 4916 */ 4917 void updateWebTextViewPadding() { 4918 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4919 if (paddingRect != null) { 4920 // Use contentToViewDimension since these are the dimensions of 4921 // the padding. 4922 mWebTextView.setPadding( 4923 contentToViewDimension(paddingRect.left), 4924 contentToViewDimension(paddingRect.top), 4925 contentToViewDimension(paddingRect.right), 4926 contentToViewDimension(paddingRect.bottom)); 4927 } 4928 } 4929 4930 /** 4931 * Tell webkit to put the cursor on screen. 4932 */ 4933 /* package */ void revealSelection() { 4934 if (mWebViewCore != null) { 4935 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4936 } 4937 } 4938 4939 /** 4940 * Called by WebTextView to find saved form data associated with the 4941 * textfield 4942 * @param name Name of the textfield. 4943 * @param nodePointer Pointer to the node of the textfield, so it can be 4944 * compared to the currently focused textfield when the data is 4945 * retrieved. 4946 * @param autoFillable true if WebKit has determined this field is part of 4947 * a form that can be auto filled. 4948 * @param autoComplete true if the attribute "autocomplete" is set to true 4949 * on the textfield. 4950 */ 4951 /* package */ void requestFormData(String name, int nodePointer, 4952 boolean autoFillable, boolean autoComplete) { 4953 if (mWebViewCore.getSettings().getSaveFormData()) { 4954 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4955 update.arg1 = nodePointer; 4956 RequestFormData updater = new RequestFormData(name, getUrl(), 4957 update, autoFillable, autoComplete); 4958 Thread t = new Thread(updater); 4959 t.start(); 4960 } 4961 } 4962 4963 /** 4964 * Pass a message to find out the <label> associated with the <input> 4965 * identified by nodePointer 4966 * @param framePointer Pointer to the frame containing the <input> node 4967 * @param nodePointer Pointer to the node for which a <label> is desired. 4968 */ 4969 /* package */ void requestLabel(int framePointer, int nodePointer) { 4970 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4971 nodePointer); 4972 } 4973 4974 /* 4975 * This class requests an Adapter for the WebTextView which shows past 4976 * entries stored in the database. It is a Runnable so that it can be done 4977 * in its own thread, without slowing down the UI. 4978 */ 4979 private class RequestFormData implements Runnable { 4980 private String mName; 4981 private String mUrl; 4982 private Message mUpdateMessage; 4983 private boolean mAutoFillable; 4984 private boolean mAutoComplete; 4985 private WebSettings mWebSettings; 4986 4987 public RequestFormData(String name, String url, Message msg, 4988 boolean autoFillable, boolean autoComplete) { 4989 mName = name; 4990 mUrl = WebTextView.urlForAutoCompleteData(url); 4991 mUpdateMessage = msg; 4992 mAutoFillable = autoFillable; 4993 mAutoComplete = autoComplete; 4994 mWebSettings = getSettings(); 4995 } 4996 4997 public void run() { 4998 ArrayList<String> pastEntries = new ArrayList<String>(); 4999 5000 if (mAutoFillable) { 5001 // Note that code inside the adapter click handler in WebTextView depends 5002 // on the AutoFill item being at the top of the drop down list. If you change 5003 // the order, make sure to do it there too! 5004 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5005 pastEntries.add(getResources().getText( 5006 com.android.internal.R.string.autofill_this_form).toString() + 5007 " " + 5008 mAutoFillData.getPreviewString()); 5009 mWebTextView.setAutoFillProfileIsSet(true); 5010 } else { 5011 // There is no autofill profile set up yet, so add an option that 5012 // will invite the user to set their profile up. 5013 pastEntries.add(getResources().getText( 5014 com.android.internal.R.string.setup_autofill).toString()); 5015 mWebTextView.setAutoFillProfileIsSet(false); 5016 } 5017 } 5018 5019 if (mAutoComplete) { 5020 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5021 } 5022 5023 if (pastEntries.size() > 0) { 5024 AutoCompleteAdapter adapter = new 5025 AutoCompleteAdapter(mContext, pastEntries); 5026 mUpdateMessage.obj = adapter; 5027 mUpdateMessage.sendToTarget(); 5028 } 5029 } 5030 } 5031 5032 /** 5033 * Dump the display tree to "/sdcard/displayTree.txt" 5034 * 5035 * @hide debug only 5036 */ 5037 public void dumpDisplayTree() { 5038 nativeDumpDisplayTree(getUrl()); 5039 } 5040 5041 /** 5042 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5043 * "/sdcard/domTree.txt" 5044 * 5045 * @hide debug only 5046 */ 5047 public void dumpDomTree(boolean toFile) { 5048 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5049 } 5050 5051 /** 5052 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5053 * to "/sdcard/renderTree.txt" 5054 * 5055 * @hide debug only 5056 */ 5057 public void dumpRenderTree(boolean toFile) { 5058 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5059 } 5060 5061 /** 5062 * Called by DRT on UI thread, need to proxy to WebCore thread. 5063 * 5064 * @hide debug only 5065 */ 5066 public void useMockDeviceOrientation() { 5067 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5068 } 5069 5070 /** 5071 * Called by DRT on WebCore thread. 5072 * 5073 * @hide debug only 5074 */ 5075 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5076 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5077 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5078 canProvideGamma, gamma); 5079 } 5080 5081 // This is used to determine long press with the center key. Does not 5082 // affect long press with the trackball/touch. 5083 private boolean mGotCenterDown = false; 5084 5085 @Override 5086 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5087 if (mBlockWebkitViewMessages) { 5088 return false; 5089 } 5090 // send complex characters to webkit for use by JS and plugins 5091 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5092 // pass the key to DOM 5093 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5094 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5095 // return true as DOM handles the key 5096 return true; 5097 } 5098 return false; 5099 } 5100 5101 private boolean isEnterActionKey(int keyCode) { 5102 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5103 || keyCode == KeyEvent.KEYCODE_ENTER 5104 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5105 } 5106 5107 @Override 5108 public boolean onKeyDown(int keyCode, KeyEvent event) { 5109 if (DebugFlags.WEB_VIEW) { 5110 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5111 + "keyCode=" + keyCode 5112 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5113 } 5114 if (mBlockWebkitViewMessages) { 5115 return false; 5116 } 5117 5118 // don't implement accelerator keys here; defer to host application 5119 if (event.isCtrlPressed()) { 5120 return false; 5121 } 5122 5123 if (mNativeClass == 0) { 5124 return false; 5125 } 5126 5127 // do this hack up front, so it always works, regardless of touch-mode 5128 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5129 mAutoRedraw = !mAutoRedraw; 5130 if (mAutoRedraw) { 5131 invalidate(); 5132 } 5133 return true; 5134 } 5135 5136 // Bubble up the key event if 5137 // 1. it is a system key; or 5138 // 2. the host application wants to handle it; 5139 if (event.isSystem() 5140 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5141 return false; 5142 } 5143 5144 // accessibility support 5145 if (accessibilityScriptInjected()) { 5146 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5147 // if an accessibility script is injected we delegate to it the key handling. 5148 // this script is a screen reader which is a fully fledged solution for blind 5149 // users to navigate in and interact with web pages. 5150 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5151 return true; 5152 } else { 5153 // Clean up if accessibility was disabled after loading the current URL. 5154 mAccessibilityScriptInjected = false; 5155 } 5156 } else if (mAccessibilityInjector != null) { 5157 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5158 if (mAccessibilityInjector.onKeyEvent(event)) { 5159 // if an accessibility injector is present (no JavaScript enabled or the site 5160 // opts out injecting our JavaScript screen reader) we let it decide whether 5161 // to act on and consume the event. 5162 return true; 5163 } 5164 } else { 5165 // Clean up if accessibility was disabled after loading the current URL. 5166 mAccessibilityInjector = null; 5167 } 5168 } 5169 5170 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5171 if (event.hasNoModifiers()) { 5172 pageUp(false); 5173 return true; 5174 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5175 pageUp(true); 5176 return true; 5177 } 5178 } 5179 5180 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5181 if (event.hasNoModifiers()) { 5182 pageDown(false); 5183 return true; 5184 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5185 pageDown(true); 5186 return true; 5187 } 5188 } 5189 5190 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5191 pageUp(true); 5192 return true; 5193 } 5194 5195 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5196 pageDown(true); 5197 return true; 5198 } 5199 5200 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5201 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5202 switchOutDrawHistory(); 5203 if (nativePageShouldHandleShiftAndArrows()) { 5204 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5205 return true; 5206 } 5207 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5208 switch (keyCode) { 5209 case KeyEvent.KEYCODE_DPAD_UP: 5210 pageUp(true); 5211 return true; 5212 case KeyEvent.KEYCODE_DPAD_DOWN: 5213 pageDown(true); 5214 return true; 5215 case KeyEvent.KEYCODE_DPAD_LEFT: 5216 nativeClearCursor(); // start next trackball movement from page edge 5217 return pinScrollTo(0, mScrollY, true, 0); 5218 case KeyEvent.KEYCODE_DPAD_RIGHT: 5219 nativeClearCursor(); // start next trackball movement from page edge 5220 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5221 } 5222 } 5223 if (mSelectingText) { 5224 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5225 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5226 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5227 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5228 int multiplier = event.getRepeatCount() + 1; 5229 moveSelection(xRate * multiplier, yRate * multiplier); 5230 return true; 5231 } 5232 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5233 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5234 return true; 5235 } 5236 // Bubble up the key event as WebView doesn't handle it 5237 return false; 5238 } 5239 5240 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5241 switchOutDrawHistory(); 5242 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5243 || nativeCursorWantsKeyEvents(); 5244 if (event.getRepeatCount() == 0) { 5245 if (mSelectingText) { 5246 return true; // discard press if copy in progress 5247 } 5248 mGotCenterDown = true; 5249 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5250 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5251 if (!wantsKeyEvents) return true; 5252 } 5253 // Bubble up the key event as WebView doesn't handle it 5254 if (!wantsKeyEvents) return false; 5255 } 5256 5257 if (getSettings().getNavDump()) { 5258 switch (keyCode) { 5259 case KeyEvent.KEYCODE_4: 5260 dumpDisplayTree(); 5261 break; 5262 case KeyEvent.KEYCODE_5: 5263 case KeyEvent.KEYCODE_6: 5264 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5265 break; 5266 case KeyEvent.KEYCODE_7: 5267 case KeyEvent.KEYCODE_8: 5268 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5269 break; 5270 } 5271 } 5272 5273 if (nativeCursorIsTextInput()) { 5274 // This message will put the node in focus, for the DOM's notion 5275 // of focus. 5276 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5277 nativeCursorNodePointer()); 5278 // This will bring up the WebTextView and put it in focus, for 5279 // our view system's notion of focus 5280 rebuildWebTextView(); 5281 // Now we need to pass the event to it 5282 if (inEditingMode()) { 5283 mWebTextView.setDefaultSelection(); 5284 return mWebTextView.dispatchKeyEvent(event); 5285 } 5286 } else if (nativeHasFocusNode()) { 5287 // In this case, the cursor is not on a text input, but the focus 5288 // might be. Check it, and if so, hand over to the WebTextView. 5289 rebuildWebTextView(); 5290 if (inEditingMode()) { 5291 mWebTextView.setDefaultSelection(); 5292 return mWebTextView.dispatchKeyEvent(event); 5293 } 5294 } 5295 5296 // TODO: should we pass all the keys to DOM or check the meta tag 5297 if (nativeCursorWantsKeyEvents() || true) { 5298 // pass the key to DOM 5299 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5300 // return true as DOM handles the key 5301 return true; 5302 } 5303 5304 // Bubble up the key event as WebView doesn't handle it 5305 return false; 5306 } 5307 5308 @Override 5309 public boolean onKeyUp(int keyCode, KeyEvent event) { 5310 if (DebugFlags.WEB_VIEW) { 5311 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5312 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5313 } 5314 if (mBlockWebkitViewMessages) { 5315 return false; 5316 } 5317 5318 if (mNativeClass == 0) { 5319 return false; 5320 } 5321 5322 // special CALL handling when cursor node's href is "tel:XXX" 5323 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5324 String text = nativeCursorText(); 5325 if (!nativeCursorIsTextInput() && text != null 5326 && text.startsWith(SCHEME_TEL)) { 5327 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5328 getContext().startActivity(intent); 5329 return true; 5330 } 5331 } 5332 5333 // Bubble up the key event if 5334 // 1. it is a system key; or 5335 // 2. the host application wants to handle it; 5336 if (event.isSystem() 5337 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5338 return false; 5339 } 5340 5341 // accessibility support 5342 if (accessibilityScriptInjected()) { 5343 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5344 // if an accessibility script is injected we delegate to it the key handling. 5345 // this script is a screen reader which is a fully fledged solution for blind 5346 // users to navigate in and interact with web pages. 5347 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5348 return true; 5349 } else { 5350 // Clean up if accessibility was disabled after loading the current URL. 5351 mAccessibilityScriptInjected = false; 5352 } 5353 } else if (mAccessibilityInjector != null) { 5354 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5355 if (mAccessibilityInjector.onKeyEvent(event)) { 5356 // if an accessibility injector is present (no JavaScript enabled or the site 5357 // opts out injecting our JavaScript screen reader) we let it decide whether to 5358 // act on and consume the event. 5359 return true; 5360 } 5361 } else { 5362 // Clean up if accessibility was disabled after loading the current URL. 5363 mAccessibilityInjector = null; 5364 } 5365 } 5366 5367 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5368 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5369 if (nativePageShouldHandleShiftAndArrows()) { 5370 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5371 return true; 5372 } 5373 // always handle the navigation keys in the UI thread 5374 // Bubble up the key event as WebView doesn't handle it 5375 return false; 5376 } 5377 5378 if (isEnterActionKey(keyCode)) { 5379 // remove the long press message first 5380 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5381 mGotCenterDown = false; 5382 5383 if (mSelectingText) { 5384 if (mExtendSelection) { 5385 copySelection(); 5386 selectionDone(); 5387 } else { 5388 mExtendSelection = true; 5389 nativeSetExtendSelection(); 5390 invalidate(); // draw the i-beam instead of the arrow 5391 } 5392 return true; // discard press if copy in progress 5393 } 5394 5395 // perform the single click 5396 Rect visibleRect = sendOurVisibleRect(); 5397 // Note that sendOurVisibleRect calls viewToContent, so the 5398 // coordinates should be in content coordinates. 5399 if (!nativeCursorIntersects(visibleRect)) { 5400 return false; 5401 } 5402 WebViewCore.CursorData data = cursorData(); 5403 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5404 playSoundEffect(SoundEffectConstants.CLICK); 5405 if (nativeCursorIsTextInput()) { 5406 rebuildWebTextView(); 5407 centerKeyPressOnTextField(); 5408 if (inEditingMode()) { 5409 mWebTextView.setDefaultSelection(); 5410 } 5411 return true; 5412 } 5413 clearTextEntry(); 5414 nativeShowCursorTimed(); 5415 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5416 return true; 5417 } 5418 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5419 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5420 nativeCursorNodePointer()); 5421 return true; 5422 } 5423 } 5424 5425 // TODO: should we pass all the keys to DOM or check the meta tag 5426 if (nativeCursorWantsKeyEvents() || true) { 5427 // pass the key to DOM 5428 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5429 // return true as DOM handles the key 5430 return true; 5431 } 5432 5433 // Bubble up the key event as WebView doesn't handle it 5434 return false; 5435 } 5436 5437 /* 5438 * Enter selecting text mode, and see if CAB should be shown. 5439 * Returns true if the WebView is now in 5440 * selecting text mode (including if it was already in that mode, and this 5441 * method did nothing). 5442 */ 5443 private boolean setUpSelect(boolean selectWord, int x, int y) { 5444 if (0 == mNativeClass) return false; // client isn't initialized 5445 if (inFullScreenMode()) return false; 5446 if (mSelectingText) return true; 5447 nativeResetSelection(); 5448 if (selectWord && !nativeWordSelection(x, y)) { 5449 selectionDone(); 5450 return false; 5451 } 5452 mSelectCallback = new SelectActionModeCallback(); 5453 mSelectCallback.setWebView(this); 5454 if (startActionMode(mSelectCallback) == null) { 5455 // There is no ActionMode, so do not allow the user to modify a 5456 // selection. 5457 selectionDone(); 5458 return false; 5459 } 5460 mExtendSelection = false; 5461 mSelectingText = mDrawSelectionPointer = true; 5462 if (DEBUG_TEXT_HANDLES) { 5463 // Debugging text handles requires running in software mode 5464 setLayerType(LAYER_TYPE_SOFTWARE, null); 5465 } 5466 // don't let the picture change during text selection 5467 WebViewCore.pauseUpdatePicture(mWebViewCore); 5468 if (nativeHasCursorNode()) { 5469 Rect rect = nativeCursorNodeBounds(); 5470 mSelectX = contentToViewX(rect.left); 5471 mSelectY = contentToViewY(rect.top); 5472 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5473 mSelectX = mScrollX + mLastTouchX; 5474 mSelectY = mScrollY + mLastTouchY; 5475 } else { 5476 mSelectX = mScrollX + getViewWidth() / 2; 5477 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5478 } 5479 nativeHideCursor(); 5480 mMinAutoScrollX = 0; 5481 mMaxAutoScrollX = getViewWidth(); 5482 mMinAutoScrollY = 0; 5483 mMaxAutoScrollY = getViewHeightWithTitle(); 5484 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 5485 viewToContentY(mSelectY), mScrollingLayerRect, 5486 mScrollingLayerBounds); 5487 if (mScrollingLayer != 0) { 5488 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5489 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5490 contentToViewX(mScrollingLayerBounds.left)); 5491 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5492 contentToViewX(mScrollingLayerBounds.right)); 5493 } 5494 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5495 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5496 contentToViewY(mScrollingLayerBounds.top)); 5497 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5498 contentToViewY(mScrollingLayerBounds.bottom)); 5499 } 5500 } 5501 mMinAutoScrollX += SELECT_SCROLL; 5502 mMaxAutoScrollX -= SELECT_SCROLL; 5503 mMinAutoScrollY += SELECT_SCROLL; 5504 mMaxAutoScrollY -= SELECT_SCROLL; 5505 return true; 5506 } 5507 5508 /** 5509 * Use this method to put the WebView into text selection mode. 5510 * Do not rely on this functionality; it will be deprecated in the future. 5511 * @deprecated This method is now obsolete. 5512 */ 5513 @Deprecated 5514 public void emulateShiftHeld() { 5515 checkThread(); 5516 setUpSelect(false, 0, 0); 5517 } 5518 5519 /** 5520 * Select all of the text in this WebView. 5521 * 5522 * @hide pending API council approval. 5523 */ 5524 public void selectAll() { 5525 if (0 == mNativeClass) return; // client isn't initialized 5526 if (inFullScreenMode()) return; 5527 if (!mSelectingText) { 5528 // retrieve a point somewhere within the text 5529 Point select = nativeSelectableText(); 5530 if (!selectText(select.x, select.y)) return; 5531 } 5532 nativeSelectAll(); 5533 mDrawSelectionPointer = false; 5534 mExtendSelection = true; 5535 invalidate(); 5536 } 5537 5538 /** 5539 * Called when the selection has been removed. 5540 */ 5541 void selectionDone() { 5542 if (mSelectingText) { 5543 mSelectingText = false; 5544 if (DEBUG_TEXT_HANDLES) { 5545 // Debugging text handles required running in software mode, set 5546 // back to default now 5547 setLayerType(LAYER_TYPE_NONE, null); 5548 } 5549 // finish is idempotent, so this is fine even if selectionDone was 5550 // called by mSelectCallback.onDestroyActionMode 5551 mSelectCallback.finish(); 5552 mSelectCallback = null; 5553 WebViewCore.resumePriority(); 5554 WebViewCore.resumeUpdatePicture(mWebViewCore); 5555 invalidate(); // redraw without selection 5556 mAutoScrollX = 0; 5557 mAutoScrollY = 0; 5558 mSentAutoScrollMessage = false; 5559 } 5560 } 5561 5562 /** 5563 * Copy the selection to the clipboard 5564 * 5565 * @hide pending API council approval. 5566 */ 5567 public boolean copySelection() { 5568 boolean copiedSomething = false; 5569 String selection = getSelection(); 5570 if (selection != null && selection != "") { 5571 if (DebugFlags.WEB_VIEW) { 5572 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5573 } 5574 Toast.makeText(mContext 5575 , com.android.internal.R.string.text_copied 5576 , Toast.LENGTH_SHORT).show(); 5577 copiedSomething = true; 5578 ClipboardManager cm = (ClipboardManager)getContext() 5579 .getSystemService(Context.CLIPBOARD_SERVICE); 5580 cm.setText(selection); 5581 } 5582 invalidate(); // remove selection region and pointer 5583 return copiedSomething; 5584 } 5585 5586 /** 5587 * @hide pending API Council approval. 5588 */ 5589 public SearchBox getSearchBox() { 5590 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5591 return null; 5592 } 5593 return mWebViewCore.getBrowserFrame().getSearchBox(); 5594 } 5595 5596 /** 5597 * Returns the currently highlighted text as a string. 5598 */ 5599 String getSelection() { 5600 if (mNativeClass == 0) return ""; 5601 return nativeGetSelection(); 5602 } 5603 5604 @Override 5605 protected void onAttachedToWindow() { 5606 super.onAttachedToWindow(); 5607 if (hasWindowFocus()) setActive(true); 5608 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5609 if (mGlobalLayoutListener == null) { 5610 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5611 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5612 } 5613 if (mScrollChangedListener == null) { 5614 mScrollChangedListener = new InnerScrollChangedListener(); 5615 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5616 } 5617 5618 addAccessibilityApisToJavaScript(); 5619 5620 mTouchEventQueue.reset(); 5621 } 5622 5623 @Override 5624 protected void onDetachedFromWindow() { 5625 clearHelpers(); 5626 mZoomManager.dismissZoomPicker(); 5627 if (hasWindowFocus()) setActive(false); 5628 5629 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5630 if (mGlobalLayoutListener != null) { 5631 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5632 mGlobalLayoutListener = null; 5633 } 5634 if (mScrollChangedListener != null) { 5635 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5636 mScrollChangedListener = null; 5637 } 5638 5639 removeAccessibilityApisFromJavaScript(); 5640 5641 super.onDetachedFromWindow(); 5642 } 5643 5644 @Override 5645 protected void onVisibilityChanged(View changedView, int visibility) { 5646 super.onVisibilityChanged(changedView, visibility); 5647 // The zoomManager may be null if the webview is created from XML that 5648 // specifies the view's visibility param as not visible (see http://b/2794841) 5649 if (visibility != View.VISIBLE && mZoomManager != null) { 5650 mZoomManager.dismissZoomPicker(); 5651 } 5652 updateDrawingState(); 5653 } 5654 5655 /** 5656 * @deprecated WebView no longer needs to implement 5657 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5658 */ 5659 @Deprecated 5660 public void onChildViewAdded(View parent, View child) {} 5661 5662 /** 5663 * @deprecated WebView no longer needs to implement 5664 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5665 */ 5666 @Deprecated 5667 public void onChildViewRemoved(View p, View child) {} 5668 5669 /** 5670 * @deprecated WebView should not have implemented 5671 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5672 */ 5673 @Deprecated 5674 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5675 } 5676 5677 void setActive(boolean active) { 5678 if (active) { 5679 if (hasFocus()) { 5680 // If our window regained focus, and we have focus, then begin 5681 // drawing the cursor ring 5682 mDrawCursorRing = !inEditingMode(); 5683 setFocusControllerActive(true); 5684 } else { 5685 mDrawCursorRing = false; 5686 if (!inEditingMode()) { 5687 // If our window gained focus, but we do not have it, do not 5688 // draw the cursor ring. 5689 setFocusControllerActive(false); 5690 } 5691 // We do not call recordButtons here because we assume 5692 // that when we lost focus, or window focus, it got called with 5693 // false for the first parameter 5694 } 5695 } else { 5696 if (!mZoomManager.isZoomPickerVisible()) { 5697 /* 5698 * The external zoom controls come in their own window, so our 5699 * window loses focus. Our policy is to not draw the cursor ring 5700 * if our window is not focused, but this is an exception since 5701 * the user can still navigate the web page with the zoom 5702 * controls showing. 5703 */ 5704 mDrawCursorRing = false; 5705 } 5706 mKeysPressed.clear(); 5707 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5708 mTouchMode = TOUCH_DONE_MODE; 5709 setFocusControllerActive(false); 5710 } 5711 invalidate(); 5712 } 5713 5714 // To avoid drawing the cursor ring, and remove the TextView when our window 5715 // loses focus. 5716 @Override 5717 public void onWindowFocusChanged(boolean hasWindowFocus) { 5718 setActive(hasWindowFocus); 5719 if (hasWindowFocus) { 5720 JWebCoreJavaBridge.setActiveWebView(this); 5721 if (mPictureUpdatePausedForFocusChange) { 5722 WebViewCore.resumeUpdatePicture(mWebViewCore); 5723 mPictureUpdatePausedForFocusChange = false; 5724 } 5725 } else { 5726 JWebCoreJavaBridge.removeActiveWebView(this); 5727 final WebSettings settings = getSettings(); 5728 if (settings != null && settings.enableSmoothTransition() && 5729 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5730 WebViewCore.pauseUpdatePicture(mWebViewCore); 5731 mPictureUpdatePausedForFocusChange = true; 5732 } 5733 } 5734 super.onWindowFocusChanged(hasWindowFocus); 5735 } 5736 5737 /* 5738 * Pass a message to WebCore Thread, telling the WebCore::Page's 5739 * FocusController to be "inactive" so that it will 5740 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5741 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5742 */ 5743 /* package */ void setFocusControllerActive(boolean active) { 5744 if (mWebViewCore == null) return; 5745 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5746 // Need to send this message after the document regains focus. 5747 if (active && mListBoxMessage != null) { 5748 mWebViewCore.sendMessage(mListBoxMessage); 5749 mListBoxMessage = null; 5750 } 5751 } 5752 5753 @Override 5754 protected void onFocusChanged(boolean focused, int direction, 5755 Rect previouslyFocusedRect) { 5756 if (DebugFlags.WEB_VIEW) { 5757 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5758 } 5759 if (focused) { 5760 // When we regain focus, if we have window focus, resume drawing 5761 // the cursor ring 5762 if (hasWindowFocus()) { 5763 mDrawCursorRing = !inEditingMode(); 5764 setFocusControllerActive(true); 5765 //} else { 5766 // The WebView has gained focus while we do not have 5767 // windowfocus. When our window lost focus, we should have 5768 // called recordButtons(false...) 5769 } 5770 } else { 5771 // When we lost focus, unless focus went to the TextView (which is 5772 // true if we are in editing mode), stop drawing the cursor ring. 5773 mDrawCursorRing = false; 5774 if (!inEditingMode()) { 5775 setFocusControllerActive(false); 5776 } 5777 mKeysPressed.clear(); 5778 } 5779 5780 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5781 } 5782 5783 void setGLRectViewport() { 5784 // Use the getGlobalVisibleRect() to get the intersection among the parents 5785 // visible == false means we're clipped - send a null rect down to indicate that 5786 // we should not draw 5787 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5788 if (visible) { 5789 // Then need to invert the Y axis, just for GL 5790 View rootView = getRootView(); 5791 int rootViewHeight = rootView.getHeight(); 5792 mViewRectViewport.set(mGLRectViewport); 5793 int savedWebViewBottom = mGLRectViewport.bottom; 5794 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5795 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5796 mGLViewportEmpty = false; 5797 } else { 5798 mGLViewportEmpty = true; 5799 } 5800 calcOurContentVisibleRectF(mVisibleContentRect); 5801 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5802 mGLViewportEmpty ? null : mViewRectViewport, mVisibleContentRect); 5803 } 5804 5805 /** 5806 * @hide 5807 */ 5808 @Override 5809 protected boolean setFrame(int left, int top, int right, int bottom) { 5810 boolean changed = super.setFrame(left, top, right, bottom); 5811 if (!changed && mHeightCanMeasure) { 5812 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5813 // in WebViewCore after we get the first layout. We do call 5814 // requestLayout() when we get contentSizeChanged(). But the View 5815 // system won't call onSizeChanged if the dimension is not changed. 5816 // In this case, we need to call sendViewSizeZoom() explicitly to 5817 // notify the WebKit about the new dimensions. 5818 sendViewSizeZoom(false); 5819 } 5820 setGLRectViewport(); 5821 return changed; 5822 } 5823 5824 @Override 5825 protected void onSizeChanged(int w, int h, int ow, int oh) { 5826 super.onSizeChanged(w, h, ow, oh); 5827 5828 // adjust the max viewport width depending on the view dimensions. This 5829 // is to ensure the scaling is not going insane. So do not shrink it if 5830 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5831 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5832 if (newMaxViewportWidth > sMaxViewportWidth) { 5833 sMaxViewportWidth = newMaxViewportWidth; 5834 } 5835 5836 mZoomManager.onSizeChanged(w, h, ow, oh); 5837 5838 if (mLoadedPicture != null && mDelaySetPicture == null) { 5839 // Size changes normally result in a new picture 5840 // Re-set the loaded picture to simulate that 5841 // However, do not update the base layer as that hasn't changed 5842 setNewPicture(mLoadedPicture, false); 5843 } 5844 } 5845 5846 @Override 5847 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5848 super.onScrollChanged(l, t, oldl, oldt); 5849 if (!mInOverScrollMode) { 5850 sendOurVisibleRect(); 5851 // update WebKit if visible title bar height changed. The logic is same 5852 // as getVisibleTitleHeightImpl. 5853 int titleHeight = getTitleHeight(); 5854 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5855 sendViewSizeZoom(false); 5856 } 5857 } 5858 } 5859 5860 @Override 5861 public boolean dispatchKeyEvent(KeyEvent event) { 5862 switch (event.getAction()) { 5863 case KeyEvent.ACTION_DOWN: 5864 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5865 break; 5866 case KeyEvent.ACTION_MULTIPLE: 5867 // Always accept the action. 5868 break; 5869 case KeyEvent.ACTION_UP: 5870 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5871 if (location == -1) { 5872 // We did not receive the key down for this key, so do not 5873 // handle the key up. 5874 return false; 5875 } else { 5876 // We did receive the key down. Handle the key up, and 5877 // remove it from our pressed keys. 5878 mKeysPressed.remove(location); 5879 } 5880 break; 5881 default: 5882 // Accept the action. This should not happen, unless a new 5883 // action is added to KeyEvent. 5884 break; 5885 } 5886 if (inEditingMode() && mWebTextView.isFocused()) { 5887 // Ensure that the WebTextView gets the event, even if it does 5888 // not currently have a bounds. 5889 return mWebTextView.dispatchKeyEvent(event); 5890 } else { 5891 return super.dispatchKeyEvent(event); 5892 } 5893 } 5894 5895 /* 5896 * Here is the snap align logic: 5897 * 1. If it starts nearly horizontally or vertically, snap align; 5898 * 2. If there is a dramitic direction change, let it go; 5899 * 5900 * Adjustable parameters. Angle is the radians on a unit circle, limited 5901 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5902 */ 5903 private static final float HSLOPE_TO_START_SNAP = .25f; 5904 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5905 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5906 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5907 /* 5908 * These values are used to influence the average angle when entering 5909 * snap mode. If is is the first movement entering snap, we set the average 5910 * to the appropriate ideal. If the user is entering into snap after the 5911 * first movement, then we average the average angle with these values. 5912 */ 5913 private static final float ANGLE_VERT = 2f; 5914 private static final float ANGLE_HORIZ = 0f; 5915 /* 5916 * The modified moving average weight. 5917 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5918 */ 5919 private static final float MMA_WEIGHT_N = 5; 5920 5921 private boolean hitFocusedPlugin(int contentX, int contentY) { 5922 if (DebugFlags.WEB_VIEW) { 5923 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5924 Rect r = nativeFocusNodeBounds(); 5925 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5926 + ", " + r.right + ", " + r.bottom + ")"); 5927 } 5928 return nativeFocusIsPlugin() 5929 && nativeFocusNodeBounds().contains(contentX, contentY); 5930 } 5931 5932 private boolean shouldForwardTouchEvent() { 5933 if (mFullScreenHolder != null) return true; 5934 if (mBlockWebkitViewMessages) return false; 5935 return mForwardTouchEvents 5936 && !mSelectingText 5937 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5938 && mPreventDefault != PREVENT_DEFAULT_NO; 5939 } 5940 5941 private boolean inFullScreenMode() { 5942 return mFullScreenHolder != null; 5943 } 5944 5945 private void dismissFullScreenMode() { 5946 if (inFullScreenMode()) { 5947 mFullScreenHolder.hide(); 5948 mFullScreenHolder = null; 5949 } 5950 } 5951 5952 void onPinchToZoomAnimationStart() { 5953 // cancel the single touch handling 5954 cancelTouch(); 5955 onZoomAnimationStart(); 5956 } 5957 5958 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5959 onZoomAnimationEnd(); 5960 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5961 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5962 // as it may trigger the unwanted fling. 5963 mTouchMode = TOUCH_PINCH_DRAG; 5964 mConfirmMove = true; 5965 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5966 } 5967 5968 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5969 // layer is found. 5970 private void startScrollingLayer(float x, float y) { 5971 int contentX = viewToContentX((int) x + mScrollX); 5972 int contentY = viewToContentY((int) y + mScrollY); 5973 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5974 mScrollingLayerRect, mScrollingLayerBounds); 5975 if (mScrollingLayer != 0) { 5976 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5977 } 5978 } 5979 5980 // 1/(density * density) used to compute the distance between points. 5981 // Computed in init(). 5982 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5983 5984 // The distance between two points reported in onTouchEvent scaled by the 5985 // density of the screen. 5986 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5987 5988 @Override 5989 public boolean onHoverEvent(MotionEvent event) { 5990 if (mNativeClass == 0) { 5991 return false; 5992 } 5993 WebViewCore.CursorData data = cursorDataNoPosition(); 5994 data.mX = viewToContentX((int) event.getX() + mScrollX); 5995 data.mY = viewToContentY((int) event.getY() + mScrollY); 5996 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5997 return true; 5998 } 5999 6000 @Override 6001 public boolean onTouchEvent(MotionEvent ev) { 6002 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6003 return false; 6004 } 6005 6006 if (DebugFlags.WEB_VIEW) { 6007 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6008 + " mTouchMode=" + mTouchMode 6009 + " numPointers=" + ev.getPointerCount()); 6010 } 6011 6012 // If WebKit wasn't interested in this multitouch gesture, enqueue 6013 // the event for handling directly rather than making the round trip 6014 // to WebKit and back. 6015 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6016 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6017 } else { 6018 mTouchEventQueue.enqueueTouchEvent(ev); 6019 } 6020 6021 // Since all events are handled asynchronously, we always want the gesture stream. 6022 return true; 6023 } 6024 6025 private float calculateDragAngle(int dx, int dy) { 6026 dx = Math.abs(dx); 6027 dy = Math.abs(dy); 6028 return (float) Math.atan2(dy, dx); 6029 } 6030 6031 /* 6032 * Common code for single touch and multi-touch. 6033 * (x, y) denotes current focus point, which is the touch point for single touch 6034 * and the middle point for multi-touch. 6035 */ 6036 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6037 long eventTime = ev.getEventTime(); 6038 6039 // Due to the touch screen edge effect, a touch closer to the edge 6040 // always snapped to the edge. As getViewWidth() can be different from 6041 // getWidth() due to the scrollbar, adjusting the point to match 6042 // getViewWidth(). Same applied to the height. 6043 x = Math.min(x, getViewWidth() - 1); 6044 y = Math.min(y, getViewHeightWithTitle() - 1); 6045 6046 int deltaX = mLastTouchX - x; 6047 int deltaY = mLastTouchY - y; 6048 int contentX = viewToContentX(x + mScrollX); 6049 int contentY = viewToContentY(y + mScrollY); 6050 6051 switch (action) { 6052 case MotionEvent.ACTION_DOWN: { 6053 mPreventDefault = PREVENT_DEFAULT_NO; 6054 mConfirmMove = false; 6055 mInitialHitTestResult = null; 6056 if (!mScroller.isFinished()) { 6057 // stop the current scroll animation, but if this is 6058 // the start of a fling, allow it to add to the current 6059 // fling's velocity 6060 mScroller.abortAnimation(); 6061 mTouchMode = TOUCH_DRAG_START_MODE; 6062 mConfirmMove = true; 6063 nativeSetIsScrolling(false); 6064 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6065 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6066 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6067 removeTouchHighlight(); 6068 } 6069 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6070 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6071 } else { 6072 // commit the short press action for the previous tap 6073 doShortPress(); 6074 mTouchMode = TOUCH_INIT_MODE; 6075 mDeferTouchProcess = !mBlockWebkitViewMessages 6076 && (!inFullScreenMode() && mForwardTouchEvents) 6077 ? hitFocusedPlugin(contentX, contentY) 6078 : false; 6079 } 6080 } else { // the normal case 6081 mTouchMode = TOUCH_INIT_MODE; 6082 mDeferTouchProcess = !mBlockWebkitViewMessages 6083 && (!inFullScreenMode() && mForwardTouchEvents) 6084 ? hitFocusedPlugin(contentX, contentY) 6085 : false; 6086 if (!mBlockWebkitViewMessages) { 6087 mWebViewCore.sendMessage( 6088 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6089 } 6090 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6091 TouchHighlightData data = new TouchHighlightData(); 6092 data.mX = contentX; 6093 data.mY = contentY; 6094 data.mNativeLayerRect = new Rect(); 6095 data.mNativeLayer = nativeScrollableLayer( 6096 contentX, contentY, data.mNativeLayerRect, null); 6097 data.mSlop = viewToContentDimension(mNavSlop); 6098 mTouchHighlightRegion.setEmpty(); 6099 if (!mBlockWebkitViewMessages) { 6100 mTouchHighlightRequested = System.currentTimeMillis(); 6101 mWebViewCore.sendMessageAtFrontOfQueue( 6102 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data); 6103 } 6104 if (DEBUG_TOUCH_HIGHLIGHT) { 6105 if (getSettings().getNavDump()) { 6106 mTouchHighlightX = (int) x + mScrollX; 6107 mTouchHighlightY = (int) y + mScrollY; 6108 mPrivateHandler.postDelayed(new Runnable() { 6109 public void run() { 6110 mTouchHighlightX = mTouchHighlightY = 0; 6111 invalidate(); 6112 } 6113 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6114 } 6115 } 6116 } 6117 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6118 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6119 (eventTime - mLastTouchUpTime), eventTime); 6120 } 6121 if (mSelectingText) { 6122 mDrawSelectionPointer = false; 6123 mSelectionStarted = nativeStartSelection(contentX, contentY); 6124 if (DebugFlags.WEB_VIEW) { 6125 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6126 } 6127 invalidate(); 6128 } 6129 } 6130 // Trigger the link 6131 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6132 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6133 mPrivateHandler.sendEmptyMessageDelayed( 6134 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6135 mPrivateHandler.sendEmptyMessageDelayed( 6136 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6137 if (inFullScreenMode() || mDeferTouchProcess) { 6138 mPreventDefault = PREVENT_DEFAULT_YES; 6139 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6140 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6141 } else { 6142 mPreventDefault = PREVENT_DEFAULT_NO; 6143 } 6144 // pass the touch events from UI thread to WebCore thread 6145 if (shouldForwardTouchEvent()) { 6146 TouchEventData ted = new TouchEventData(); 6147 ted.mAction = action; 6148 ted.mIds = new int[1]; 6149 ted.mIds[0] = ev.getPointerId(0); 6150 ted.mPoints = new Point[1]; 6151 ted.mPoints[0] = new Point(contentX, contentY); 6152 ted.mPointsInView = new Point[1]; 6153 ted.mPointsInView[0] = new Point(x, y); 6154 ted.mMetaState = ev.getMetaState(); 6155 ted.mReprocess = mDeferTouchProcess; 6156 ted.mNativeLayer = nativeScrollableLayer( 6157 contentX, contentY, ted.mNativeLayerRect, null); 6158 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6159 mTouchEventQueue.preQueueTouchEventData(ted); 6160 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6161 if (mDeferTouchProcess) { 6162 // still needs to set them for compute deltaX/Y 6163 mLastTouchX = x; 6164 mLastTouchY = y; 6165 break; 6166 } 6167 if (!inFullScreenMode()) { 6168 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6169 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6170 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6171 action, 0), TAP_TIMEOUT); 6172 } 6173 } 6174 } 6175 startTouch(x, y, eventTime); 6176 break; 6177 } 6178 case MotionEvent.ACTION_MOVE: { 6179 boolean firstMove = false; 6180 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6181 >= mTouchSlopSquare) { 6182 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6183 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6184 mConfirmMove = true; 6185 firstMove = true; 6186 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6187 mTouchMode = TOUCH_INIT_MODE; 6188 } 6189 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6190 removeTouchHighlight(); 6191 } 6192 } 6193 // pass the touch events from UI thread to WebCore thread 6194 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6195 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6196 TouchEventData ted = new TouchEventData(); 6197 ted.mAction = action; 6198 ted.mIds = new int[1]; 6199 ted.mIds[0] = ev.getPointerId(0); 6200 ted.mPoints = new Point[1]; 6201 ted.mPoints[0] = new Point(contentX, contentY); 6202 ted.mPointsInView = new Point[1]; 6203 ted.mPointsInView[0] = new Point(x, y); 6204 ted.mMetaState = ev.getMetaState(); 6205 ted.mReprocess = mDeferTouchProcess; 6206 ted.mNativeLayer = mScrollingLayer; 6207 ted.mNativeLayerRect.set(mScrollingLayerRect); 6208 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6209 mTouchEventQueue.preQueueTouchEventData(ted); 6210 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6211 mLastSentTouchTime = eventTime; 6212 if (mDeferTouchProcess) { 6213 break; 6214 } 6215 if (firstMove && !inFullScreenMode()) { 6216 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6217 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6218 action, 0), TAP_TIMEOUT); 6219 } 6220 } 6221 if (mTouchMode == TOUCH_DONE_MODE 6222 || mPreventDefault == PREVENT_DEFAULT_YES) { 6223 // no dragging during scroll zoom animation, or when prevent 6224 // default is yes 6225 break; 6226 } 6227 if (mVelocityTracker == null) { 6228 Log.e(LOGTAG, "Got null mVelocityTracker when " 6229 + "mPreventDefault = " + mPreventDefault 6230 + " mDeferTouchProcess = " + mDeferTouchProcess 6231 + " mTouchMode = " + mTouchMode); 6232 } else { 6233 mVelocityTracker.addMovement(ev); 6234 } 6235 if (mSelectingText && mSelectionStarted) { 6236 if (DebugFlags.WEB_VIEW) { 6237 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6238 } 6239 ViewParent parent = getParent(); 6240 if (parent != null) { 6241 parent.requestDisallowInterceptTouchEvent(true); 6242 } 6243 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6244 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6245 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6246 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6247 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6248 && !mSentAutoScrollMessage) { 6249 mSentAutoScrollMessage = true; 6250 mPrivateHandler.sendEmptyMessageDelayed( 6251 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6252 } 6253 if (deltaX != 0 || deltaY != 0) { 6254 nativeExtendSelection(contentX, contentY); 6255 invalidate(); 6256 } 6257 break; 6258 } 6259 6260 if (mTouchMode != TOUCH_DRAG_MODE && 6261 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6262 6263 if (!mConfirmMove) { 6264 break; 6265 } 6266 6267 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6268 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6269 // track mLastTouchTime as we may need to do fling at 6270 // ACTION_UP 6271 mLastTouchTime = eventTime; 6272 break; 6273 } 6274 6275 // Only lock dragging to one axis if we don't have a scale in progress. 6276 // Scaling implies free-roaming movement. Note this is only ever a question 6277 // if mZoomManager.supportsPanDuringZoom() is true. 6278 final ScaleGestureDetector detector = 6279 mZoomManager.getMultiTouchGestureDetector(); 6280 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6281 if (detector == null || !detector.isInProgress()) { 6282 // if it starts nearly horizontal or vertical, enforce it 6283 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6284 mSnapScrollMode = SNAP_X; 6285 mSnapPositive = deltaX > 0; 6286 mAverageAngle = ANGLE_HORIZ; 6287 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6288 mSnapScrollMode = SNAP_Y; 6289 mSnapPositive = deltaY > 0; 6290 mAverageAngle = ANGLE_VERT; 6291 } 6292 } 6293 6294 mTouchMode = TOUCH_DRAG_MODE; 6295 mLastTouchX = x; 6296 mLastTouchY = y; 6297 deltaX = 0; 6298 deltaY = 0; 6299 6300 startScrollingLayer(x, y); 6301 startDrag(); 6302 } 6303 6304 // do pan 6305 boolean done = false; 6306 boolean keepScrollBarsVisible = false; 6307 if (deltaX == 0 && deltaY == 0) { 6308 keepScrollBarsVisible = done = true; 6309 } else { 6310 mAverageAngle += 6311 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6312 / MMA_WEIGHT_N; 6313 if (mSnapScrollMode != SNAP_NONE) { 6314 if (mSnapScrollMode == SNAP_Y) { 6315 // radical change means getting out of snap mode 6316 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6317 mSnapScrollMode = SNAP_NONE; 6318 } 6319 } 6320 if (mSnapScrollMode == SNAP_X) { 6321 // radical change means getting out of snap mode 6322 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6323 mSnapScrollMode = SNAP_NONE; 6324 } 6325 } 6326 } else { 6327 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6328 mSnapScrollMode = SNAP_X; 6329 mSnapPositive = deltaX > 0; 6330 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6331 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6332 mSnapScrollMode = SNAP_Y; 6333 mSnapPositive = deltaY > 0; 6334 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6335 } 6336 } 6337 if (mSnapScrollMode != SNAP_NONE) { 6338 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6339 deltaY = 0; 6340 } else { 6341 deltaX = 0; 6342 } 6343 } 6344 mLastTouchX = x; 6345 mLastTouchY = y; 6346 6347 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6348 mHeldMotionless = MOTIONLESS_FALSE; 6349 nativeSetIsScrolling(true); 6350 } else { 6351 mHeldMotionless = MOTIONLESS_TRUE; 6352 nativeSetIsScrolling(false); 6353 keepScrollBarsVisible = true; 6354 } 6355 6356 mLastTouchTime = eventTime; 6357 } 6358 6359 doDrag(deltaX, deltaY); 6360 6361 // Turn off scrollbars when dragging a layer. 6362 if (keepScrollBarsVisible && 6363 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6364 if (mHeldMotionless != MOTIONLESS_TRUE) { 6365 mHeldMotionless = MOTIONLESS_TRUE; 6366 invalidate(); 6367 } 6368 // keep the scrollbar on the screen even there is no scroll 6369 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6370 false); 6371 // Post a message so that we'll keep them alive while we're not scrolling. 6372 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6373 .obtainMessage(AWAKEN_SCROLL_BARS), 6374 ViewConfiguration.getScrollDefaultDelay()); 6375 // return false to indicate that we can't pan out of the 6376 // view space 6377 return !done; 6378 } else { 6379 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6380 } 6381 break; 6382 } 6383 case MotionEvent.ACTION_UP: { 6384 if (!isFocused()) requestFocus(); 6385 // pass the touch events from UI thread to WebCore thread 6386 if (shouldForwardTouchEvent()) { 6387 TouchEventData ted = new TouchEventData(); 6388 ted.mIds = new int[1]; 6389 ted.mIds[0] = ev.getPointerId(0); 6390 ted.mAction = action; 6391 ted.mPoints = new Point[1]; 6392 ted.mPoints[0] = new Point(contentX, contentY); 6393 ted.mPointsInView = new Point[1]; 6394 ted.mPointsInView[0] = new Point(x, y); 6395 ted.mMetaState = ev.getMetaState(); 6396 ted.mReprocess = mDeferTouchProcess; 6397 ted.mNativeLayer = mScrollingLayer; 6398 ted.mNativeLayerRect.set(mScrollingLayerRect); 6399 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6400 mTouchEventQueue.preQueueTouchEventData(ted); 6401 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6402 } 6403 mLastTouchUpTime = eventTime; 6404 if (mSentAutoScrollMessage) { 6405 mAutoScrollX = mAutoScrollY = 0; 6406 } 6407 switch (mTouchMode) { 6408 case TOUCH_DOUBLE_TAP_MODE: // double tap 6409 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6410 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6411 if (inFullScreenMode() || mDeferTouchProcess) { 6412 TouchEventData ted = new TouchEventData(); 6413 ted.mIds = new int[1]; 6414 ted.mIds[0] = ev.getPointerId(0); 6415 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6416 ted.mPoints = new Point[1]; 6417 ted.mPoints[0] = new Point(contentX, contentY); 6418 ted.mPointsInView = new Point[1]; 6419 ted.mPointsInView[0] = new Point(x, y); 6420 ted.mMetaState = ev.getMetaState(); 6421 ted.mReprocess = mDeferTouchProcess; 6422 ted.mNativeLayer = nativeScrollableLayer( 6423 contentX, contentY, 6424 ted.mNativeLayerRect, null); 6425 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6426 mTouchEventQueue.preQueueTouchEventData(ted); 6427 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6428 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6429 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6430 mTouchMode = TOUCH_DONE_MODE; 6431 } 6432 break; 6433 case TOUCH_INIT_MODE: // tap 6434 case TOUCH_SHORTPRESS_START_MODE: 6435 case TOUCH_SHORTPRESS_MODE: 6436 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6437 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6438 if (mConfirmMove) { 6439 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6440 " WebCore's response for touch down."); 6441 if (mPreventDefault != PREVENT_DEFAULT_YES 6442 && (computeMaxScrollX() > 0 6443 || computeMaxScrollY() > 0)) { 6444 // If the user has performed a very quick touch 6445 // sequence it is possible that we may get here 6446 // before WebCore has had a chance to process the events. 6447 // In this case, any call to preventDefault in the 6448 // JS touch handler will not have been executed yet. 6449 // Hence we will see both the UI (now) and WebCore 6450 // (when context switches) handling the event, 6451 // regardless of whether the web developer actually 6452 // doeses preventDefault in their touch handler. This 6453 // is the nature of our asynchronous touch model. 6454 6455 // we will not rewrite drag code here, but we 6456 // will try fling if it applies. 6457 WebViewCore.reducePriority(); 6458 // to get better performance, pause updating the 6459 // picture 6460 WebViewCore.pauseUpdatePicture(mWebViewCore); 6461 // fall through to TOUCH_DRAG_MODE 6462 } else { 6463 // WebKit may consume the touch event and modify 6464 // DOM. drawContentPicture() will be called with 6465 // animateSroll as true for better performance. 6466 // Force redraw in high-quality. 6467 invalidate(); 6468 break; 6469 } 6470 } else { 6471 if (mSelectingText) { 6472 // tapping on selection or controls does nothing 6473 if (!nativeHitSelection(contentX, contentY)) { 6474 selectionDone(); 6475 } 6476 break; 6477 } 6478 // only trigger double tap if the WebView is 6479 // scalable 6480 if (mTouchMode == TOUCH_INIT_MODE 6481 && (canZoomIn() || canZoomOut())) { 6482 mPrivateHandler.sendEmptyMessageDelayed( 6483 RELEASE_SINGLE_TAP, ViewConfiguration 6484 .getDoubleTapTimeout()); 6485 } else { 6486 doShortPress(); 6487 } 6488 break; 6489 } 6490 case TOUCH_DRAG_MODE: 6491 case TOUCH_DRAG_LAYER_MODE: 6492 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6493 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6494 // if the user waits a while w/o moving before the 6495 // up, we don't want to do a fling 6496 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6497 if (mVelocityTracker == null) { 6498 Log.e(LOGTAG, "Got null mVelocityTracker when " 6499 + "mPreventDefault = " 6500 + mPreventDefault 6501 + " mDeferTouchProcess = " 6502 + mDeferTouchProcess); 6503 } else { 6504 mVelocityTracker.addMovement(ev); 6505 } 6506 // set to MOTIONLESS_IGNORE so that it won't keep 6507 // removing and sending message in 6508 // drawCoreAndCursorRing() 6509 mHeldMotionless = MOTIONLESS_IGNORE; 6510 doFling(); 6511 break; 6512 } else { 6513 if (mScroller.springBack(mScrollX, mScrollY, 0, 6514 computeMaxScrollX(), 0, 6515 computeMaxScrollY())) { 6516 invalidate(); 6517 } 6518 } 6519 // redraw in high-quality, as we're done dragging 6520 mHeldMotionless = MOTIONLESS_TRUE; 6521 invalidate(); 6522 // fall through 6523 case TOUCH_DRAG_START_MODE: 6524 // TOUCH_DRAG_START_MODE should not happen for the real 6525 // device as we almost certain will get a MOVE. But this 6526 // is possible on emulator. 6527 mLastVelocity = 0; 6528 WebViewCore.resumePriority(); 6529 if (!mSelectingText) { 6530 WebViewCore.resumeUpdatePicture(mWebViewCore); 6531 } 6532 break; 6533 } 6534 stopTouch(); 6535 break; 6536 } 6537 case MotionEvent.ACTION_CANCEL: { 6538 if (mTouchMode == TOUCH_DRAG_MODE) { 6539 mScroller.springBack(mScrollX, mScrollY, 0, 6540 computeMaxScrollX(), 0, computeMaxScrollY()); 6541 invalidate(); 6542 } 6543 cancelWebCoreTouchEvent(contentX, contentY, false); 6544 cancelTouch(); 6545 break; 6546 } 6547 } 6548 return true; 6549 } 6550 6551 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6552 TouchEventData ted = new TouchEventData(); 6553 ted.mAction = ev.getActionMasked(); 6554 final int count = ev.getPointerCount(); 6555 ted.mIds = new int[count]; 6556 ted.mPoints = new Point[count]; 6557 ted.mPointsInView = new Point[count]; 6558 for (int c = 0; c < count; c++) { 6559 ted.mIds[c] = ev.getPointerId(c); 6560 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6561 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6562 ted.mPoints[c] = new Point(x, y); 6563 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6564 } 6565 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6566 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6567 ted.mActionIndex = ev.getActionIndex(); 6568 } 6569 ted.mMetaState = ev.getMetaState(); 6570 ted.mReprocess = true; 6571 ted.mMotionEvent = MotionEvent.obtain(ev); 6572 ted.mSequence = sequence; 6573 mTouchEventQueue.preQueueTouchEventData(ted); 6574 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6575 cancelLongPress(); 6576 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6577 } 6578 6579 void handleMultiTouchInWebView(MotionEvent ev) { 6580 if (DebugFlags.WEB_VIEW) { 6581 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6582 + " mTouchMode=" + mTouchMode 6583 + " numPointers=" + ev.getPointerCount() 6584 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6585 } 6586 6587 final ScaleGestureDetector detector = 6588 mZoomManager.getMultiTouchGestureDetector(); 6589 6590 // A few apps use WebView but don't instantiate gesture detector. 6591 // We don't need to support multi touch for them. 6592 if (detector == null) return; 6593 6594 float x = ev.getX(); 6595 float y = ev.getY(); 6596 6597 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6598 detector.onTouchEvent(ev); 6599 6600 if (detector.isInProgress()) { 6601 if (DebugFlags.WEB_VIEW) { 6602 Log.v(LOGTAG, "detector is in progress"); 6603 } 6604 mLastTouchTime = ev.getEventTime(); 6605 x = detector.getFocusX(); 6606 y = detector.getFocusY(); 6607 6608 cancelLongPress(); 6609 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6610 if (!mZoomManager.supportsPanDuringZoom()) { 6611 return; 6612 } 6613 mTouchMode = TOUCH_DRAG_MODE; 6614 if (mVelocityTracker == null) { 6615 mVelocityTracker = VelocityTracker.obtain(); 6616 } 6617 } 6618 } 6619 6620 int action = ev.getActionMasked(); 6621 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6622 cancelTouch(); 6623 action = MotionEvent.ACTION_DOWN; 6624 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6625 // set mLastTouchX/Y to the remaining points for multi-touch. 6626 mLastTouchX = Math.round(x); 6627 mLastTouchY = Math.round(y); 6628 } else if (action == MotionEvent.ACTION_MOVE) { 6629 // negative x or y indicate it is on the edge, skip it. 6630 if (x < 0 || y < 0) { 6631 return; 6632 } 6633 } 6634 6635 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6636 } 6637 6638 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6639 if (shouldForwardTouchEvent()) { 6640 if (removeEvents) { 6641 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6642 } 6643 TouchEventData ted = new TouchEventData(); 6644 ted.mIds = new int[1]; 6645 ted.mIds[0] = 0; 6646 ted.mPoints = new Point[1]; 6647 ted.mPoints[0] = new Point(x, y); 6648 ted.mPointsInView = new Point[1]; 6649 int viewX = contentToViewX(x) - mScrollX; 6650 int viewY = contentToViewY(y) - mScrollY; 6651 ted.mPointsInView[0] = new Point(viewX, viewY); 6652 ted.mAction = MotionEvent.ACTION_CANCEL; 6653 ted.mNativeLayer = nativeScrollableLayer( 6654 x, y, ted.mNativeLayerRect, null); 6655 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6656 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6657 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6658 6659 if (removeEvents) { 6660 // Mark this after sending the message above; we should 6661 // be willing to ignore the cancel event that we just sent. 6662 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6663 } 6664 } 6665 } 6666 6667 private void startTouch(float x, float y, long eventTime) { 6668 // Remember where the motion event started 6669 mStartTouchX = mLastTouchX = Math.round(x); 6670 mStartTouchY = mLastTouchY = Math.round(y); 6671 mLastTouchTime = eventTime; 6672 mVelocityTracker = VelocityTracker.obtain(); 6673 mSnapScrollMode = SNAP_NONE; 6674 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6675 ViewConfiguration.getTapTimeout()); 6676 } 6677 6678 private void startDrag() { 6679 WebViewCore.reducePriority(); 6680 // to get better performance, pause updating the picture 6681 WebViewCore.pauseUpdatePicture(mWebViewCore); 6682 nativeSetIsScrolling(true); 6683 6684 if (!mDragFromTextInput) { 6685 nativeHideCursor(); 6686 } 6687 6688 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6689 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6690 mZoomManager.invokeZoomPicker(); 6691 } 6692 } 6693 6694 private void doDrag(int deltaX, int deltaY) { 6695 if ((deltaX | deltaY) != 0) { 6696 int oldX = mScrollX; 6697 int oldY = mScrollY; 6698 int rangeX = computeMaxScrollX(); 6699 int rangeY = computeMaxScrollY(); 6700 int overscrollDistance = mOverscrollDistance; 6701 6702 // Check for the original scrolling layer in case we change 6703 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6704 // reached the edge of a layer but mScrollingLayer will be non-zero 6705 // if we initiated the drag on a layer. 6706 if (mScrollingLayer != 0) { 6707 final int contentX = viewToContentDimension(deltaX); 6708 final int contentY = viewToContentDimension(deltaY); 6709 6710 // Check the scrolling bounds to see if we will actually do any 6711 // scrolling. The rectangle is in document coordinates. 6712 final int maxX = mScrollingLayerRect.right; 6713 final int maxY = mScrollingLayerRect.bottom; 6714 final int resultX = Math.max(0, 6715 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6716 final int resultY = Math.max(0, 6717 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6718 6719 if (resultX != mScrollingLayerRect.left || 6720 resultY != mScrollingLayerRect.top) { 6721 // In case we switched to dragging the page. 6722 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6723 deltaX = contentX; 6724 deltaY = contentY; 6725 oldX = mScrollingLayerRect.left; 6726 oldY = mScrollingLayerRect.top; 6727 rangeX = maxX; 6728 rangeY = maxY; 6729 } else { 6730 // Scroll the main page if we are not going to scroll the 6731 // layer. This does not reset mScrollingLayer in case the 6732 // user changes directions and the layer can scroll the 6733 // other way. 6734 mTouchMode = TOUCH_DRAG_MODE; 6735 } 6736 } 6737 6738 if (mOverScrollGlow != null) { 6739 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6740 } 6741 6742 overScrollBy(deltaX, deltaY, oldX, oldY, 6743 rangeX, rangeY, 6744 mOverscrollDistance, mOverscrollDistance, true); 6745 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6746 invalidate(); 6747 } 6748 } 6749 mZoomManager.keepZoomPickerVisible(); 6750 } 6751 6752 private void stopTouch() { 6753 if (mScroller.isFinished() && !mSelectingText 6754 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6755 WebViewCore.resumePriority(); 6756 WebViewCore.resumeUpdatePicture(mWebViewCore); 6757 nativeSetIsScrolling(false); 6758 } 6759 6760 // we also use mVelocityTracker == null to tell us that we are 6761 // not "moving around", so we can take the slower/prettier 6762 // mode in the drawing code 6763 if (mVelocityTracker != null) { 6764 mVelocityTracker.recycle(); 6765 mVelocityTracker = null; 6766 } 6767 6768 // Release any pulled glows 6769 if (mOverScrollGlow != null) { 6770 mOverScrollGlow.releaseAll(); 6771 } 6772 } 6773 6774 private void cancelTouch() { 6775 // we also use mVelocityTracker == null to tell us that we are 6776 // not "moving around", so we can take the slower/prettier 6777 // mode in the drawing code 6778 if (mVelocityTracker != null) { 6779 mVelocityTracker.recycle(); 6780 mVelocityTracker = null; 6781 } 6782 6783 if ((mTouchMode == TOUCH_DRAG_MODE 6784 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6785 WebViewCore.resumePriority(); 6786 WebViewCore.resumeUpdatePicture(mWebViewCore); 6787 nativeSetIsScrolling(false); 6788 } 6789 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6790 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6791 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6792 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6793 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6794 removeTouchHighlight(); 6795 } 6796 mHeldMotionless = MOTIONLESS_TRUE; 6797 mTouchMode = TOUCH_DONE_MODE; 6798 nativeHideCursor(); 6799 } 6800 6801 @Override 6802 public boolean onGenericMotionEvent(MotionEvent event) { 6803 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6804 switch (event.getAction()) { 6805 case MotionEvent.ACTION_SCROLL: { 6806 final float vscroll; 6807 final float hscroll; 6808 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6809 vscroll = 0; 6810 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6811 } else { 6812 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6813 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6814 } 6815 if (hscroll != 0 || vscroll != 0) { 6816 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6817 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6818 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6819 return true; 6820 } 6821 } 6822 } 6823 } 6824 } 6825 return super.onGenericMotionEvent(event); 6826 } 6827 6828 private long mTrackballFirstTime = 0; 6829 private long mTrackballLastTime = 0; 6830 private float mTrackballRemainsX = 0.0f; 6831 private float mTrackballRemainsY = 0.0f; 6832 private int mTrackballXMove = 0; 6833 private int mTrackballYMove = 0; 6834 private boolean mSelectingText = false; 6835 private boolean mSelectionStarted = false; 6836 private boolean mExtendSelection = false; 6837 private boolean mDrawSelectionPointer = false; 6838 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6839 private static final int TRACKBALL_TIMEOUT = 200; 6840 private static final int TRACKBALL_WAIT = 100; 6841 private static final int TRACKBALL_SCALE = 400; 6842 private static final int TRACKBALL_SCROLL_COUNT = 5; 6843 private static final int TRACKBALL_MOVE_COUNT = 10; 6844 private static final int TRACKBALL_MULTIPLIER = 3; 6845 private static final int SELECT_CURSOR_OFFSET = 16; 6846 private static final int SELECT_SCROLL = 5; 6847 private int mSelectX = 0; 6848 private int mSelectY = 0; 6849 private boolean mFocusSizeChanged = false; 6850 private boolean mTrackballDown = false; 6851 private long mTrackballUpTime = 0; 6852 private long mLastCursorTime = 0; 6853 private Rect mLastCursorBounds; 6854 6855 // Set by default; BrowserActivity clears to interpret trackball data 6856 // directly for movement. Currently, the framework only passes 6857 // arrow key events, not trackball events, from one child to the next 6858 private boolean mMapTrackballToArrowKeys = true; 6859 6860 private DrawData mDelaySetPicture; 6861 private DrawData mLoadedPicture; 6862 6863 public void setMapTrackballToArrowKeys(boolean setMap) { 6864 checkThread(); 6865 mMapTrackballToArrowKeys = setMap; 6866 } 6867 6868 void resetTrackballTime() { 6869 mTrackballLastTime = 0; 6870 } 6871 6872 @Override 6873 public boolean onTrackballEvent(MotionEvent ev) { 6874 long time = ev.getEventTime(); 6875 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6876 if (ev.getY() > 0) pageDown(true); 6877 if (ev.getY() < 0) pageUp(true); 6878 return true; 6879 } 6880 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6881 if (mSelectingText) { 6882 return true; // discard press if copy in progress 6883 } 6884 mTrackballDown = true; 6885 if (mNativeClass == 0) { 6886 return false; 6887 } 6888 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6889 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6890 nativeSelectBestAt(mLastCursorBounds); 6891 } 6892 if (DebugFlags.WEB_VIEW) { 6893 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6894 + " time=" + time 6895 + " mLastCursorTime=" + mLastCursorTime); 6896 } 6897 if (isInTouchMode()) requestFocusFromTouch(); 6898 return false; // let common code in onKeyDown at it 6899 } 6900 if (ev.getAction() == MotionEvent.ACTION_UP) { 6901 // LONG_PRESS_CENTER is set in common onKeyDown 6902 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6903 mTrackballDown = false; 6904 mTrackballUpTime = time; 6905 if (mSelectingText) { 6906 if (mExtendSelection) { 6907 copySelection(); 6908 selectionDone(); 6909 } else { 6910 mExtendSelection = true; 6911 nativeSetExtendSelection(); 6912 invalidate(); // draw the i-beam instead of the arrow 6913 } 6914 return true; // discard press if copy in progress 6915 } 6916 if (DebugFlags.WEB_VIEW) { 6917 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6918 + " time=" + time 6919 ); 6920 } 6921 return false; // let common code in onKeyUp at it 6922 } 6923 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6924 AccessibilityManager.getInstance(mContext).isEnabled()) { 6925 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6926 return false; 6927 } 6928 if (mTrackballDown) { 6929 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6930 return true; // discard move if trackball is down 6931 } 6932 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6933 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6934 return true; 6935 } 6936 // TODO: alternatively we can do panning as touch does 6937 switchOutDrawHistory(); 6938 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6939 if (DebugFlags.WEB_VIEW) { 6940 Log.v(LOGTAG, "onTrackballEvent time=" 6941 + time + " last=" + mTrackballLastTime); 6942 } 6943 mTrackballFirstTime = time; 6944 mTrackballXMove = mTrackballYMove = 0; 6945 } 6946 mTrackballLastTime = time; 6947 if (DebugFlags.WEB_VIEW) { 6948 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6949 } 6950 mTrackballRemainsX += ev.getX(); 6951 mTrackballRemainsY += ev.getY(); 6952 doTrackball(time, ev.getMetaState()); 6953 return true; 6954 } 6955 6956 void moveSelection(float xRate, float yRate) { 6957 if (mNativeClass == 0) 6958 return; 6959 int width = getViewWidth(); 6960 int height = getViewHeight(); 6961 mSelectX += xRate; 6962 mSelectY += yRate; 6963 int maxX = width + mScrollX; 6964 int maxY = height + mScrollY; 6965 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6966 , mSelectX)); 6967 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6968 , mSelectY)); 6969 if (DebugFlags.WEB_VIEW) { 6970 Log.v(LOGTAG, "moveSelection" 6971 + " mSelectX=" + mSelectX 6972 + " mSelectY=" + mSelectY 6973 + " mScrollX=" + mScrollX 6974 + " mScrollY=" + mScrollY 6975 + " xRate=" + xRate 6976 + " yRate=" + yRate 6977 ); 6978 } 6979 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6980 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6981 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6982 : 0; 6983 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6984 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6985 : 0; 6986 pinScrollBy(scrollX, scrollY, true, 0); 6987 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6988 requestRectangleOnScreen(select); 6989 invalidate(); 6990 } 6991 6992 private int scaleTrackballX(float xRate, int width) { 6993 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6994 int nextXMove = xMove; 6995 if (xMove > 0) { 6996 if (xMove > mTrackballXMove) { 6997 xMove -= mTrackballXMove; 6998 } 6999 } else if (xMove < mTrackballXMove) { 7000 xMove -= mTrackballXMove; 7001 } 7002 mTrackballXMove = nextXMove; 7003 return xMove; 7004 } 7005 7006 private int scaleTrackballY(float yRate, int height) { 7007 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7008 int nextYMove = yMove; 7009 if (yMove > 0) { 7010 if (yMove > mTrackballYMove) { 7011 yMove -= mTrackballYMove; 7012 } 7013 } else if (yMove < mTrackballYMove) { 7014 yMove -= mTrackballYMove; 7015 } 7016 mTrackballYMove = nextYMove; 7017 return yMove; 7018 } 7019 7020 private int keyCodeToSoundsEffect(int keyCode) { 7021 switch(keyCode) { 7022 case KeyEvent.KEYCODE_DPAD_UP: 7023 return SoundEffectConstants.NAVIGATION_UP; 7024 case KeyEvent.KEYCODE_DPAD_RIGHT: 7025 return SoundEffectConstants.NAVIGATION_RIGHT; 7026 case KeyEvent.KEYCODE_DPAD_DOWN: 7027 return SoundEffectConstants.NAVIGATION_DOWN; 7028 case KeyEvent.KEYCODE_DPAD_LEFT: 7029 return SoundEffectConstants.NAVIGATION_LEFT; 7030 } 7031 throw new IllegalArgumentException("keyCode must be one of " + 7032 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7033 "KEYCODE_DPAD_LEFT}."); 7034 } 7035 7036 private void doTrackball(long time, int metaState) { 7037 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7038 if (elapsed == 0) { 7039 elapsed = TRACKBALL_TIMEOUT; 7040 } 7041 float xRate = mTrackballRemainsX * 1000 / elapsed; 7042 float yRate = mTrackballRemainsY * 1000 / elapsed; 7043 int viewWidth = getViewWidth(); 7044 int viewHeight = getViewHeight(); 7045 if (mSelectingText) { 7046 if (!mDrawSelectionPointer) { 7047 // The last selection was made by touch, disabling drawing the 7048 // selection pointer. Allow the trackball to adjust the 7049 // position of the touch control. 7050 mSelectX = contentToViewX(nativeSelectionX()); 7051 mSelectY = contentToViewY(nativeSelectionY()); 7052 mDrawSelectionPointer = mExtendSelection = true; 7053 nativeSetExtendSelection(); 7054 } 7055 moveSelection(scaleTrackballX(xRate, viewWidth), 7056 scaleTrackballY(yRate, viewHeight)); 7057 mTrackballRemainsX = mTrackballRemainsY = 0; 7058 return; 7059 } 7060 float ax = Math.abs(xRate); 7061 float ay = Math.abs(yRate); 7062 float maxA = Math.max(ax, ay); 7063 if (DebugFlags.WEB_VIEW) { 7064 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7065 + " xRate=" + xRate 7066 + " yRate=" + yRate 7067 + " mTrackballRemainsX=" + mTrackballRemainsX 7068 + " mTrackballRemainsY=" + mTrackballRemainsY); 7069 } 7070 int width = mContentWidth - viewWidth; 7071 int height = mContentHeight - viewHeight; 7072 if (width < 0) width = 0; 7073 if (height < 0) height = 0; 7074 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7075 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7076 maxA = Math.max(ax, ay); 7077 int count = Math.max(0, (int) maxA); 7078 int oldScrollX = mScrollX; 7079 int oldScrollY = mScrollY; 7080 if (count > 0) { 7081 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7082 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7083 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7084 KeyEvent.KEYCODE_DPAD_RIGHT; 7085 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7086 if (DebugFlags.WEB_VIEW) { 7087 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7088 + " count=" + count 7089 + " mTrackballRemainsX=" + mTrackballRemainsX 7090 + " mTrackballRemainsY=" + mTrackballRemainsY); 7091 } 7092 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7093 for (int i = 0; i < count; i++) { 7094 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7095 } 7096 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7097 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7098 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7099 } 7100 mTrackballRemainsX = mTrackballRemainsY = 0; 7101 } 7102 if (count >= TRACKBALL_SCROLL_COUNT) { 7103 int xMove = scaleTrackballX(xRate, width); 7104 int yMove = scaleTrackballY(yRate, height); 7105 if (DebugFlags.WEB_VIEW) { 7106 Log.v(LOGTAG, "doTrackball pinScrollBy" 7107 + " count=" + count 7108 + " xMove=" + xMove + " yMove=" + yMove 7109 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7110 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7111 ); 7112 } 7113 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7114 xMove = 0; 7115 } 7116 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7117 yMove = 0; 7118 } 7119 if (xMove != 0 || yMove != 0) { 7120 pinScrollBy(xMove, yMove, true, 0); 7121 } 7122 } 7123 } 7124 7125 /** 7126 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7127 * @return Maximum horizontal scroll position within real content 7128 */ 7129 int computeMaxScrollX() { 7130 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7131 } 7132 7133 /** 7134 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7135 * @return Maximum vertical scroll position within real content 7136 */ 7137 int computeMaxScrollY() { 7138 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7139 - getViewHeightWithTitle(), 0); 7140 } 7141 7142 boolean updateScrollCoordinates(int x, int y) { 7143 int oldX = mScrollX; 7144 int oldY = mScrollY; 7145 mScrollX = x; 7146 mScrollY = y; 7147 if (oldX != mScrollX || oldY != mScrollY) { 7148 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7149 return true; 7150 } else { 7151 return false; 7152 } 7153 } 7154 7155 public void flingScroll(int vx, int vy) { 7156 checkThread(); 7157 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7158 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7159 invalidate(); 7160 } 7161 7162 private void doFling() { 7163 if (mVelocityTracker == null) { 7164 return; 7165 } 7166 int maxX = computeMaxScrollX(); 7167 int maxY = computeMaxScrollY(); 7168 7169 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7170 int vx = (int) mVelocityTracker.getXVelocity(); 7171 int vy = (int) mVelocityTracker.getYVelocity(); 7172 7173 int scrollX = mScrollX; 7174 int scrollY = mScrollY; 7175 int overscrollDistance = mOverscrollDistance; 7176 int overflingDistance = mOverflingDistance; 7177 7178 // Use the layer's scroll data if applicable. 7179 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7180 scrollX = mScrollingLayerRect.left; 7181 scrollY = mScrollingLayerRect.top; 7182 maxX = mScrollingLayerRect.right; 7183 maxY = mScrollingLayerRect.bottom; 7184 // No overscrolling for layers. 7185 overscrollDistance = overflingDistance = 0; 7186 } 7187 7188 if (mSnapScrollMode != SNAP_NONE) { 7189 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7190 vy = 0; 7191 } else { 7192 vx = 0; 7193 } 7194 } 7195 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7196 WebViewCore.resumePriority(); 7197 if (!mSelectingText) { 7198 WebViewCore.resumeUpdatePicture(mWebViewCore); 7199 } 7200 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7201 invalidate(); 7202 } 7203 return; 7204 } 7205 float currentVelocity = mScroller.getCurrVelocity(); 7206 float velocity = (float) Math.hypot(vx, vy); 7207 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7208 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7209 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7210 - Math.atan2(vy, vx))); 7211 final float circle = (float) (Math.PI) * 2.0f; 7212 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7213 vx += currentVelocity * mLastVelX / mLastVelocity; 7214 vy += currentVelocity * mLastVelY / mLastVelocity; 7215 velocity = (float) Math.hypot(vx, vy); 7216 if (DebugFlags.WEB_VIEW) { 7217 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7218 } 7219 } else if (DebugFlags.WEB_VIEW) { 7220 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7221 } 7222 } else if (DebugFlags.WEB_VIEW) { 7223 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7224 + " current=" + currentVelocity 7225 + " vx=" + vx + " vy=" + vy 7226 + " maxX=" + maxX + " maxY=" + maxY 7227 + " scrollX=" + scrollX + " scrollY=" + scrollY 7228 + " layer=" + mScrollingLayer); 7229 } 7230 7231 // Allow sloppy flings without overscrolling at the edges. 7232 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7233 vx = 0; 7234 } 7235 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7236 vy = 0; 7237 } 7238 7239 if (overscrollDistance < overflingDistance) { 7240 if ((vx > 0 && scrollX == -overscrollDistance) || 7241 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7242 vx = 0; 7243 } 7244 if ((vy > 0 && scrollY == -overscrollDistance) || 7245 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7246 vy = 0; 7247 } 7248 } 7249 7250 mLastVelX = vx; 7251 mLastVelY = vy; 7252 mLastVelocity = velocity; 7253 7254 // no horizontal overscroll if the content just fits 7255 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7256 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7257 // Duration is calculated based on velocity. With range boundaries and overscroll 7258 // we may not know how long the final animation will take. (Hence the deprecation 7259 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7260 // resumes during this effect we will take a performance hit. See computeScroll; 7261 // we resume webcore there when the animation is finished. 7262 final int time = mScroller.getDuration(); 7263 7264 // Suppress scrollbars for layer scrolling. 7265 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7266 awakenScrollBars(time); 7267 } 7268 7269 invalidate(); 7270 } 7271 7272 /** 7273 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7274 * in charge of installing this view to the view hierarchy. This view will 7275 * become visible when the user starts scrolling via touch and fade away if 7276 * the user does not interact with it. 7277 * <p/> 7278 * API version 3 introduces a built-in zoom mechanism that is shown 7279 * automatically by the MapView. This is the preferred approach for 7280 * showing the zoom UI. 7281 * 7282 * @deprecated The built-in zoom mechanism is preferred, see 7283 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7284 */ 7285 @Deprecated 7286 public View getZoomControls() { 7287 checkThread(); 7288 if (!getSettings().supportZoom()) { 7289 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7290 return null; 7291 } 7292 return mZoomManager.getExternalZoomPicker(); 7293 } 7294 7295 void dismissZoomControl() { 7296 mZoomManager.dismissZoomPicker(); 7297 } 7298 7299 float getDefaultZoomScale() { 7300 return mZoomManager.getDefaultScale(); 7301 } 7302 7303 /** 7304 * Return the overview scale of the WebView 7305 * @return The overview scale. 7306 */ 7307 float getZoomOverviewScale() { 7308 return mZoomManager.getZoomOverviewScale(); 7309 } 7310 7311 /** 7312 * @return TRUE if the WebView can be zoomed in. 7313 */ 7314 public boolean canZoomIn() { 7315 checkThread(); 7316 return mZoomManager.canZoomIn(); 7317 } 7318 7319 /** 7320 * @return TRUE if the WebView can be zoomed out. 7321 */ 7322 public boolean canZoomOut() { 7323 checkThread(); 7324 return mZoomManager.canZoomOut(); 7325 } 7326 7327 /** 7328 * Perform zoom in in the webview 7329 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7330 */ 7331 public boolean zoomIn() { 7332 checkThread(); 7333 return mZoomManager.zoomIn(); 7334 } 7335 7336 /** 7337 * Perform zoom out in the webview 7338 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7339 */ 7340 public boolean zoomOut() { 7341 checkThread(); 7342 return mZoomManager.zoomOut(); 7343 } 7344 7345 /** 7346 * This selects the best clickable target at mLastTouchX and mLastTouchY 7347 * and calls showCursorTimed on the native side 7348 */ 7349 private void updateSelection() { 7350 if (mNativeClass == 0) { 7351 return; 7352 } 7353 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7354 // mLastTouchX and mLastTouchY are the point in the current viewport 7355 int contentX = viewToContentX(mLastTouchX + mScrollX); 7356 int contentY = viewToContentY(mLastTouchY + mScrollY); 7357 int slop = viewToContentDimension(mNavSlop); 7358 Rect rect = new Rect(contentX - slop, contentY - slop, 7359 contentX + slop, contentY + slop); 7360 nativeSelectBestAt(rect); 7361 mInitialHitTestResult = hitTestResult(null); 7362 } 7363 7364 /** 7365 * Scroll the focused text field to match the WebTextView 7366 * @param xPercent New x position of the WebTextView from 0 to 1. 7367 */ 7368 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7369 if (!inEditingMode() || mWebViewCore == null) { 7370 return; 7371 } 7372 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7373 new Float(xPercent)); 7374 } 7375 7376 /** 7377 * Scroll the focused textarea vertically to match the WebTextView 7378 * @param y New y position of the WebTextView in view coordinates 7379 */ 7380 /* package */ void scrollFocusedTextInputY(int y) { 7381 if (!inEditingMode() || mWebViewCore == null) { 7382 return; 7383 } 7384 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7385 } 7386 7387 /** 7388 * Set our starting point and time for a drag from the WebTextView. 7389 */ 7390 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7391 if (!inEditingMode()) { 7392 return; 7393 } 7394 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7395 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7396 mLastTouchTime = eventTime; 7397 if (!mScroller.isFinished()) { 7398 abortAnimation(); 7399 } 7400 mSnapScrollMode = SNAP_NONE; 7401 mVelocityTracker = VelocityTracker.obtain(); 7402 mTouchMode = TOUCH_DRAG_START_MODE; 7403 } 7404 7405 /** 7406 * Given a motion event from the WebTextView, set its location to our 7407 * coordinates, and handle the event. 7408 */ 7409 /*package*/ boolean textFieldDrag(MotionEvent event) { 7410 if (!inEditingMode()) { 7411 return false; 7412 } 7413 mDragFromTextInput = true; 7414 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7415 (float) (mWebTextView.getTop() - mScrollY)); 7416 boolean result = onTouchEvent(event); 7417 mDragFromTextInput = false; 7418 return result; 7419 } 7420 7421 /** 7422 * Due a touch up from a WebTextView. This will be handled by webkit to 7423 * change the selection. 7424 * @param event MotionEvent in the WebTextView's coordinates. 7425 */ 7426 /*package*/ void touchUpOnTextField(MotionEvent event) { 7427 if (!inEditingMode()) { 7428 return; 7429 } 7430 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7431 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7432 int slop = viewToContentDimension(mNavSlop); 7433 nativeMotionUp(x, y, slop); 7434 } 7435 7436 /** 7437 * Called when pressing the center key or trackball on a textfield. 7438 */ 7439 /*package*/ void centerKeyPressOnTextField() { 7440 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7441 nativeCursorNodePointer()); 7442 } 7443 7444 private void doShortPress() { 7445 if (mNativeClass == 0) { 7446 return; 7447 } 7448 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7449 return; 7450 } 7451 mTouchMode = TOUCH_DONE_MODE; 7452 updateSelection(); 7453 switchOutDrawHistory(); 7454 // mLastTouchX and mLastTouchY are the point in the current viewport 7455 int contentX = viewToContentX(mLastTouchX + mScrollX); 7456 int contentY = viewToContentY(mLastTouchY + mScrollY); 7457 int slop = viewToContentDimension(mNavSlop); 7458 if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) { 7459 // set mTouchHighlightRequested to 0 to cause an immediate 7460 // drawing of the touch rings 7461 mTouchHighlightRequested = 0; 7462 invalidate(mTouchHighlightRegion.getBounds()); 7463 mPrivateHandler.postDelayed(new Runnable() { 7464 @Override 7465 public void run() { 7466 removeTouchHighlight(); 7467 } 7468 }, ViewConfiguration.getPressedStateDuration()); 7469 } 7470 if (getSettings().supportTouchOnly()) { 7471 removeTouchHighlight(); 7472 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7473 // use "0" as generation id to inform WebKit to use the same x/y as 7474 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7475 touchUpData.mMoveGeneration = 0; 7476 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7477 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7478 WebViewCore.MotionUpData motionUpData = new WebViewCore 7479 .MotionUpData(); 7480 motionUpData.mFrame = nativeCacheHitFramePointer(); 7481 motionUpData.mNode = nativeCacheHitNodePointer(); 7482 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7483 motionUpData.mX = contentX; 7484 motionUpData.mY = contentY; 7485 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7486 motionUpData); 7487 } else { 7488 doMotionUp(contentX, contentY); 7489 } 7490 } 7491 7492 private void doMotionUp(int contentX, int contentY) { 7493 int slop = viewToContentDimension(mNavSlop); 7494 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7495 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7496 } 7497 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7498 playSoundEffect(SoundEffectConstants.CLICK); 7499 } 7500 } 7501 7502 void sendPluginDrawMsg() { 7503 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7504 } 7505 7506 /** 7507 * Returns plugin bounds if x/y in content coordinates corresponds to a 7508 * plugin. Otherwise a NULL rectangle is returned. 7509 */ 7510 Rect getPluginBounds(int x, int y) { 7511 int slop = viewToContentDimension(mNavSlop); 7512 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7513 return nativeCacheHitNodeBounds(); 7514 } else { 7515 return null; 7516 } 7517 } 7518 7519 /* 7520 * Return true if the rect (e.g. plugin) is fully visible and maximized 7521 * inside the WebView. 7522 */ 7523 boolean isRectFitOnScreen(Rect rect) { 7524 final int rectWidth = rect.width(); 7525 final int rectHeight = rect.height(); 7526 final int viewWidth = getViewWidth(); 7527 final int viewHeight = getViewHeightWithTitle(); 7528 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7529 scale = mZoomManager.computeScaleWithLimits(scale); 7530 return !mZoomManager.willScaleTriggerZoom(scale) 7531 && contentToViewX(rect.left) >= mScrollX 7532 && contentToViewX(rect.right) <= mScrollX + viewWidth 7533 && contentToViewY(rect.top) >= mScrollY 7534 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7535 } 7536 7537 /* 7538 * Maximize and center the rectangle, specified in the document coordinate 7539 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7540 * animated scroll to center it. If the zoom needs to be changed, find the 7541 * zoom center and do a smooth zoom transition. The rect is in document 7542 * coordinates 7543 */ 7544 void centerFitRect(Rect rect) { 7545 final int rectWidth = rect.width(); 7546 final int rectHeight = rect.height(); 7547 final int viewWidth = getViewWidth(); 7548 final int viewHeight = getViewHeightWithTitle(); 7549 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7550 / rectHeight); 7551 scale = mZoomManager.computeScaleWithLimits(scale); 7552 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7553 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7554 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7555 true, 0); 7556 } else { 7557 float actualScale = mZoomManager.getScale(); 7558 float oldScreenX = rect.left * actualScale - mScrollX; 7559 float rectViewX = rect.left * scale; 7560 float rectViewWidth = rectWidth * scale; 7561 float newMaxWidth = mContentWidth * scale; 7562 float newScreenX = (viewWidth - rectViewWidth) / 2; 7563 // pin the newX to the WebView 7564 if (newScreenX > rectViewX) { 7565 newScreenX = rectViewX; 7566 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7567 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7568 } 7569 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7570 / (scale - actualScale); 7571 float oldScreenY = rect.top * actualScale + getTitleHeight() 7572 - mScrollY; 7573 float rectViewY = rect.top * scale + getTitleHeight(); 7574 float rectViewHeight = rectHeight * scale; 7575 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7576 float newScreenY = (viewHeight - rectViewHeight) / 2; 7577 // pin the newY to the WebView 7578 if (newScreenY > rectViewY) { 7579 newScreenY = rectViewY; 7580 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7581 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7582 } 7583 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7584 / (scale - actualScale); 7585 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7586 mZoomManager.startZoomAnimation(scale, false); 7587 } 7588 } 7589 7590 // Called by JNI to handle a touch on a node representing an email address, 7591 // address, or phone number 7592 private void overrideLoading(String url) { 7593 mCallbackProxy.uiOverrideUrlLoading(url); 7594 } 7595 7596 @Override 7597 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7598 // FIXME: If a subwindow is showing find, and the user touches the 7599 // background window, it can steal focus. 7600 if (mFindIsUp) return false; 7601 boolean result = false; 7602 if (inEditingMode()) { 7603 result = mWebTextView.requestFocus(direction, 7604 previouslyFocusedRect); 7605 } else { 7606 result = super.requestFocus(direction, previouslyFocusedRect); 7607 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7608 // For cases such as GMail, where we gain focus from a direction, 7609 // we want to move to the first available link. 7610 // FIXME: If there are no visible links, we may not want to 7611 int fakeKeyDirection = 0; 7612 switch(direction) { 7613 case View.FOCUS_UP: 7614 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7615 break; 7616 case View.FOCUS_DOWN: 7617 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7618 break; 7619 case View.FOCUS_LEFT: 7620 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7621 break; 7622 case View.FOCUS_RIGHT: 7623 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7624 break; 7625 default: 7626 return result; 7627 } 7628 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7629 navHandledKey(fakeKeyDirection, 1, true, 0); 7630 } 7631 } 7632 } 7633 return result; 7634 } 7635 7636 @Override 7637 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7638 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7639 7640 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7641 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7642 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7643 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7644 7645 int measuredHeight = heightSize; 7646 int measuredWidth = widthSize; 7647 7648 // Grab the content size from WebViewCore. 7649 int contentHeight = contentToViewDimension(mContentHeight); 7650 int contentWidth = contentToViewDimension(mContentWidth); 7651 7652// Log.d(LOGTAG, "------- measure " + heightMode); 7653 7654 if (heightMode != MeasureSpec.EXACTLY) { 7655 mHeightCanMeasure = true; 7656 measuredHeight = contentHeight; 7657 if (heightMode == MeasureSpec.AT_MOST) { 7658 // If we are larger than the AT_MOST height, then our height can 7659 // no longer be measured and we should scroll internally. 7660 if (measuredHeight > heightSize) { 7661 measuredHeight = heightSize; 7662 mHeightCanMeasure = false; 7663 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7664 } 7665 } 7666 } else { 7667 mHeightCanMeasure = false; 7668 } 7669 if (mNativeClass != 0) { 7670 nativeSetHeightCanMeasure(mHeightCanMeasure); 7671 } 7672 // For the width, always use the given size unless unspecified. 7673 if (widthMode == MeasureSpec.UNSPECIFIED) { 7674 mWidthCanMeasure = true; 7675 measuredWidth = contentWidth; 7676 } else { 7677 if (measuredWidth < contentWidth) { 7678 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7679 } 7680 mWidthCanMeasure = false; 7681 } 7682 7683 synchronized (this) { 7684 setMeasuredDimension(measuredWidth, measuredHeight); 7685 } 7686 } 7687 7688 @Override 7689 public boolean requestChildRectangleOnScreen(View child, 7690 Rect rect, 7691 boolean immediate) { 7692 if (mNativeClass == 0) { 7693 return false; 7694 } 7695 // don't scroll while in zoom animation. When it is done, we will adjust 7696 // the necessary components (e.g., WebTextView if it is in editing mode) 7697 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7698 return false; 7699 } 7700 7701 rect.offset(child.getLeft() - child.getScrollX(), 7702 child.getTop() - child.getScrollY()); 7703 7704 Rect content = new Rect(viewToContentX(mScrollX), 7705 viewToContentY(mScrollY), 7706 viewToContentX(mScrollX + getWidth() 7707 - getVerticalScrollbarWidth()), 7708 viewToContentY(mScrollY + getViewHeightWithTitle())); 7709 content = nativeSubtractLayers(content); 7710 int screenTop = contentToViewY(content.top); 7711 int screenBottom = contentToViewY(content.bottom); 7712 int height = screenBottom - screenTop; 7713 int scrollYDelta = 0; 7714 7715 if (rect.bottom > screenBottom) { 7716 int oneThirdOfScreenHeight = height / 3; 7717 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7718 // If the rectangle is too tall to fit in the bottom two thirds 7719 // of the screen, place it at the top. 7720 scrollYDelta = rect.top - screenTop; 7721 } else { 7722 // If the rectangle will still fit on screen, we want its 7723 // top to be in the top third of the screen. 7724 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7725 } 7726 } else if (rect.top < screenTop) { 7727 scrollYDelta = rect.top - screenTop; 7728 } 7729 7730 int screenLeft = contentToViewX(content.left); 7731 int screenRight = contentToViewX(content.right); 7732 int width = screenRight - screenLeft; 7733 int scrollXDelta = 0; 7734 7735 if (rect.right > screenRight && rect.left > screenLeft) { 7736 if (rect.width() > width) { 7737 scrollXDelta += (rect.left - screenLeft); 7738 } else { 7739 scrollXDelta += (rect.right - screenRight); 7740 } 7741 } else if (rect.left < screenLeft) { 7742 scrollXDelta -= (screenLeft - rect.left); 7743 } 7744 7745 if ((scrollYDelta | scrollXDelta) != 0) { 7746 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7747 } 7748 7749 return false; 7750 } 7751 7752 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7753 String replace, int newStart, int newEnd) { 7754 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7755 arg.mReplace = replace; 7756 arg.mNewStart = newStart; 7757 arg.mNewEnd = newEnd; 7758 mTextGeneration++; 7759 arg.mTextGeneration = mTextGeneration; 7760 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7761 } 7762 7763 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7764 // check if mWebViewCore has been destroyed 7765 if (mWebViewCore == null) { 7766 return; 7767 } 7768 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7769 arg.mEvent = event; 7770 arg.mCurrentText = currentText; 7771 // Increase our text generation number, and pass it to webcore thread 7772 mTextGeneration++; 7773 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7774 // WebKit's document state is not saved until about to leave the page. 7775 // To make sure the host application, like Browser, has the up to date 7776 // document state when it goes to background, we force to save the 7777 // document state. 7778 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7779 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7780 cursorData(), 1000); 7781 } 7782 7783 /** 7784 * @hide 7785 */ 7786 public synchronized WebViewCore getWebViewCore() { 7787 return mWebViewCore; 7788 } 7789 7790 /** 7791 * Used only by TouchEventQueue to store pending touch events. 7792 */ 7793 private static class QueuedTouch { 7794 long mSequence; 7795 MotionEvent mEvent; // Optional 7796 TouchEventData mTed; // Optional 7797 7798 QueuedTouch mNext; 7799 7800 public QueuedTouch set(TouchEventData ted) { 7801 mSequence = ted.mSequence; 7802 mTed = ted; 7803 mEvent = null; 7804 mNext = null; 7805 return this; 7806 } 7807 7808 public QueuedTouch set(MotionEvent ev, long sequence) { 7809 mEvent = MotionEvent.obtain(ev); 7810 mSequence = sequence; 7811 mTed = null; 7812 mNext = null; 7813 return this; 7814 } 7815 7816 public QueuedTouch add(QueuedTouch other) { 7817 if (other.mSequence < mSequence) { 7818 other.mNext = this; 7819 return other; 7820 } 7821 7822 QueuedTouch insertAt = this; 7823 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7824 insertAt = insertAt.mNext; 7825 } 7826 other.mNext = insertAt.mNext; 7827 insertAt.mNext = other; 7828 return this; 7829 } 7830 } 7831 7832 /** 7833 * WebView handles touch events asynchronously since some events must be passed to WebKit 7834 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7835 * of which path they take to ensure that no events are ever processed out of order 7836 * by WebView. 7837 */ 7838 private class TouchEventQueue { 7839 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7840 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7841 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7842 7843 // Events waiting to be processed. 7844 private QueuedTouch mTouchEventQueue; 7845 7846 // Known events that are waiting on a response before being enqueued. 7847 private QueuedTouch mPreQueue; 7848 7849 // Pool of QueuedTouch objects saved for later use. 7850 private QueuedTouch mQueuedTouchRecycleBin; 7851 private int mQueuedTouchRecycleCount; 7852 7853 private long mLastEventTime = Long.MAX_VALUE; 7854 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7855 7856 // milliseconds until we abandon hope of getting all of a previous gesture 7857 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7858 7859 private QueuedTouch obtainQueuedTouch() { 7860 if (mQueuedTouchRecycleBin != null) { 7861 QueuedTouch result = mQueuedTouchRecycleBin; 7862 mQueuedTouchRecycleBin = result.mNext; 7863 mQueuedTouchRecycleCount--; 7864 return result; 7865 } 7866 return new QueuedTouch(); 7867 } 7868 7869 /** 7870 * Allow events with any currently missing sequence numbers to be skipped in processing. 7871 */ 7872 public void ignoreCurrentlyMissingEvents() { 7873 mIgnoreUntilSequence = mNextTouchSequence; 7874 7875 // Run any events we have available and complete, pre-queued or otherwise. 7876 runQueuedAndPreQueuedEvents(); 7877 } 7878 7879 private void runQueuedAndPreQueuedEvents() { 7880 QueuedTouch qd = mPreQueue; 7881 boolean fromPreQueue = true; 7882 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7883 handleQueuedTouch(qd); 7884 QueuedTouch recycleMe = qd; 7885 if (fromPreQueue) { 7886 mPreQueue = qd.mNext; 7887 } else { 7888 mTouchEventQueue = qd.mNext; 7889 } 7890 recycleQueuedTouch(recycleMe); 7891 mLastHandledTouchSequence++; 7892 7893 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7894 long nextQueued = mTouchEventQueue != null ? 7895 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7896 fromPreQueue = nextPre < nextQueued; 7897 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7898 } 7899 } 7900 7901 /** 7902 * Add a TouchEventData to the pre-queue. 7903 * 7904 * An event in the pre-queue is an event that we know about that 7905 * has been sent to webkit, but that we haven't received back and 7906 * enqueued into the normal touch queue yet. If webkit ever times 7907 * out and we need to ignore currently missing events, we'll run 7908 * events from the pre-queue to patch the holes. 7909 * 7910 * @param ted TouchEventData to pre-queue 7911 */ 7912 public void preQueueTouchEventData(TouchEventData ted) { 7913 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7914 if (mPreQueue == null) { 7915 mPreQueue = newTouch; 7916 } else { 7917 QueuedTouch insertionPoint = mPreQueue; 7918 while (insertionPoint.mNext != null && 7919 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7920 insertionPoint = insertionPoint.mNext; 7921 } 7922 newTouch.mNext = insertionPoint.mNext; 7923 insertionPoint.mNext = newTouch; 7924 } 7925 } 7926 7927 private void recycleQueuedTouch(QueuedTouch qd) { 7928 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7929 qd.mNext = mQueuedTouchRecycleBin; 7930 mQueuedTouchRecycleBin = qd; 7931 mQueuedTouchRecycleCount++; 7932 } 7933 } 7934 7935 /** 7936 * Reset the touch event queue. This will dump any pending events 7937 * and reset the sequence numbering. 7938 */ 7939 public void reset() { 7940 mNextTouchSequence = Long.MIN_VALUE + 1; 7941 mLastHandledTouchSequence = Long.MIN_VALUE; 7942 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7943 while (mTouchEventQueue != null) { 7944 QueuedTouch recycleMe = mTouchEventQueue; 7945 mTouchEventQueue = mTouchEventQueue.mNext; 7946 recycleQueuedTouch(recycleMe); 7947 } 7948 while (mPreQueue != null) { 7949 QueuedTouch recycleMe = mPreQueue; 7950 mPreQueue = mPreQueue.mNext; 7951 recycleQueuedTouch(recycleMe); 7952 } 7953 } 7954 7955 /** 7956 * Return the next valid sequence number for tagging incoming touch events. 7957 * @return The next touch event sequence number 7958 */ 7959 public long nextTouchSequence() { 7960 return mNextTouchSequence++; 7961 } 7962 7963 /** 7964 * Enqueue a touch event in the form of TouchEventData. 7965 * The sequence number will be read from the mSequence field of the argument. 7966 * 7967 * If the touch event's sequence number is the next in line to be processed, it will 7968 * be handled before this method returns. Any subsequent events that have already 7969 * been queued will also be processed in their proper order. 7970 * 7971 * @param ted Touch data to be processed in order. 7972 * @return true if the event was processed before returning, false if it was just enqueued. 7973 */ 7974 public boolean enqueueTouchEvent(TouchEventData ted) { 7975 // Remove from the pre-queue if present 7976 QueuedTouch preQueue = mPreQueue; 7977 if (preQueue != null) { 7978 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7979 // if it was present in the pre-queue, and removed from the pre-queue itself. 7980 if (preQueue.mSequence == ted.mSequence) { 7981 mPreQueue = preQueue.mNext; 7982 } else { 7983 QueuedTouch prev = preQueue; 7984 preQueue = null; 7985 while (prev.mNext != null) { 7986 if (prev.mNext.mSequence == ted.mSequence) { 7987 preQueue = prev.mNext; 7988 prev.mNext = preQueue.mNext; 7989 break; 7990 } else { 7991 prev = prev.mNext; 7992 } 7993 } 7994 } 7995 } 7996 7997 if (ted.mSequence < mLastHandledTouchSequence) { 7998 // Stale event and we already moved on; drop it. (Should not be common.) 7999 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8000 " received from webcore; ignoring"); 8001 return false; 8002 } 8003 8004 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8005 return false; 8006 } 8007 8008 // dropStaleGestures above might have fast-forwarded us to 8009 // an event we have already. 8010 runNextQueuedEvents(); 8011 8012 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8013 if (preQueue != null) { 8014 recycleQueuedTouch(preQueue); 8015 preQueue = null; 8016 } 8017 handleQueuedTouchEventData(ted); 8018 8019 mLastHandledTouchSequence++; 8020 8021 // Do we have any more? Run them if so. 8022 runNextQueuedEvents(); 8023 } else { 8024 // Reuse the pre-queued object if we had it. 8025 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8026 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8027 } 8028 return true; 8029 } 8030 8031 /** 8032 * Enqueue a touch event in the form of a MotionEvent from the framework. 8033 * 8034 * If the touch event's sequence number is the next in line to be processed, it will 8035 * be handled before this method returns. Any subsequent events that have already 8036 * been queued will also be processed in their proper order. 8037 * 8038 * @param ev MotionEvent to be processed in order 8039 */ 8040 public void enqueueTouchEvent(MotionEvent ev) { 8041 final long sequence = nextTouchSequence(); 8042 8043 if (dropStaleGestures(ev, sequence)) { 8044 return; 8045 } 8046 8047 // dropStaleGestures above might have fast-forwarded us to 8048 // an event we have already. 8049 runNextQueuedEvents(); 8050 8051 if (mLastHandledTouchSequence + 1 == sequence) { 8052 handleQueuedMotionEvent(ev); 8053 8054 mLastHandledTouchSequence++; 8055 8056 // Do we have any more? Run them if so. 8057 runNextQueuedEvents(); 8058 } else { 8059 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8060 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8061 } 8062 } 8063 8064 private void runNextQueuedEvents() { 8065 QueuedTouch qd = mTouchEventQueue; 8066 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8067 handleQueuedTouch(qd); 8068 QueuedTouch recycleMe = qd; 8069 qd = qd.mNext; 8070 recycleQueuedTouch(recycleMe); 8071 mLastHandledTouchSequence++; 8072 } 8073 mTouchEventQueue = qd; 8074 } 8075 8076 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8077 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8078 // This is to make sure that we don't attempt to process a tap 8079 // or long press when webkit takes too long to get back to us. 8080 // The movement will be properly confirmed when we process the 8081 // enqueued event later. 8082 final int dx = Math.round(ev.getX()) - mLastTouchX; 8083 final int dy = Math.round(ev.getY()) - mLastTouchY; 8084 if (dx * dx + dy * dy > mTouchSlopSquare) { 8085 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8086 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8087 } 8088 } 8089 8090 if (mTouchEventQueue == null) { 8091 return sequence <= mLastHandledTouchSequence; 8092 } 8093 8094 // If we have a new down event and it's been a while since the last event 8095 // we saw, catch up as best we can and keep going. 8096 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8097 long eventTime = ev.getEventTime(); 8098 long lastHandledEventTime = mLastEventTime; 8099 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8100 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8101 "Catching up."); 8102 runQueuedAndPreQueuedEvents(); 8103 8104 // Drop leftovers that we truly don't have. 8105 QueuedTouch qd = mTouchEventQueue; 8106 while (qd != null && qd.mSequence < sequence) { 8107 QueuedTouch recycleMe = qd; 8108 qd = qd.mNext; 8109 recycleQueuedTouch(recycleMe); 8110 } 8111 mTouchEventQueue = qd; 8112 mLastHandledTouchSequence = sequence - 1; 8113 } 8114 } 8115 8116 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8117 QueuedTouch qd = mTouchEventQueue; 8118 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8119 QueuedTouch recycleMe = qd; 8120 qd = qd.mNext; 8121 recycleQueuedTouch(recycleMe); 8122 } 8123 mTouchEventQueue = qd; 8124 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8125 } 8126 8127 if (mPreQueue != null) { 8128 // Drop stale prequeued events 8129 QueuedTouch qd = mPreQueue; 8130 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8131 QueuedTouch recycleMe = qd; 8132 qd = qd.mNext; 8133 recycleQueuedTouch(recycleMe); 8134 } 8135 mPreQueue = qd; 8136 } 8137 8138 return sequence <= mLastHandledTouchSequence; 8139 } 8140 8141 private void handleQueuedTouch(QueuedTouch qt) { 8142 if (qt.mTed != null) { 8143 handleQueuedTouchEventData(qt.mTed); 8144 } else { 8145 handleQueuedMotionEvent(qt.mEvent); 8146 qt.mEvent.recycle(); 8147 } 8148 } 8149 8150 private void handleQueuedMotionEvent(MotionEvent ev) { 8151 mLastEventTime = ev.getEventTime(); 8152 int action = ev.getActionMasked(); 8153 if (ev.getPointerCount() > 1) { // Multi-touch 8154 handleMultiTouchInWebView(ev); 8155 } else { 8156 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8157 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8158 // ScaleGestureDetector needs a consistent event stream to operate properly. 8159 // It won't take any action with fewer than two pointers, but it needs to 8160 // update internal bookkeeping state. 8161 detector.onTouchEvent(ev); 8162 } 8163 8164 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8165 } 8166 } 8167 8168 private void handleQueuedTouchEventData(TouchEventData ted) { 8169 if (ted.mMotionEvent != null) { 8170 mLastEventTime = ted.mMotionEvent.getEventTime(); 8171 } 8172 if (!ted.mReprocess) { 8173 if (ted.mAction == MotionEvent.ACTION_DOWN 8174 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8175 // if prevent default is called from WebCore, UI 8176 // will not handle the rest of the touch events any 8177 // more. 8178 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8179 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8180 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8181 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8182 // the return for the first ACTION_MOVE will decide 8183 // whether UI will handle touch or not. Currently no 8184 // support for alternating prevent default 8185 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8186 : PREVENT_DEFAULT_NO; 8187 } 8188 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8189 mTouchHighlightRegion.setEmpty(); 8190 } 8191 } else { 8192 if (ted.mPoints.length > 1) { // multi-touch 8193 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8194 mPreventDefault = PREVENT_DEFAULT_NO; 8195 handleMultiTouchInWebView(ted.mMotionEvent); 8196 } else { 8197 mPreventDefault = PREVENT_DEFAULT_YES; 8198 } 8199 return; 8200 } 8201 8202 // prevent default is not called in WebCore, so the 8203 // message needs to be reprocessed in UI 8204 if (!ted.mNativeResult) { 8205 // Following is for single touch. 8206 switch (ted.mAction) { 8207 case MotionEvent.ACTION_DOWN: 8208 mLastDeferTouchX = ted.mPointsInView[0].x; 8209 mLastDeferTouchY = ted.mPointsInView[0].y; 8210 mDeferTouchMode = TOUCH_INIT_MODE; 8211 break; 8212 case MotionEvent.ACTION_MOVE: { 8213 // no snapping in defer process 8214 int x = ted.mPointsInView[0].x; 8215 int y = ted.mPointsInView[0].y; 8216 8217 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8218 mDeferTouchMode = TOUCH_DRAG_MODE; 8219 mLastDeferTouchX = x; 8220 mLastDeferTouchY = y; 8221 startScrollingLayer(x, y); 8222 startDrag(); 8223 } 8224 int deltaX = pinLocX((int) (mScrollX 8225 + mLastDeferTouchX - x)) 8226 - mScrollX; 8227 int deltaY = pinLocY((int) (mScrollY 8228 + mLastDeferTouchY - y)) 8229 - mScrollY; 8230 doDrag(deltaX, deltaY); 8231 if (deltaX != 0) mLastDeferTouchX = x; 8232 if (deltaY != 0) mLastDeferTouchY = y; 8233 break; 8234 } 8235 case MotionEvent.ACTION_UP: 8236 case MotionEvent.ACTION_CANCEL: 8237 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8238 // no fling in defer process 8239 mScroller.springBack(mScrollX, mScrollY, 0, 8240 computeMaxScrollX(), 0, 8241 computeMaxScrollY()); 8242 invalidate(); 8243 WebViewCore.resumePriority(); 8244 WebViewCore.resumeUpdatePicture(mWebViewCore); 8245 } 8246 mDeferTouchMode = TOUCH_DONE_MODE; 8247 break; 8248 case WebViewCore.ACTION_DOUBLETAP: 8249 // doDoubleTap() needs mLastTouchX/Y as anchor 8250 mLastDeferTouchX = ted.mPointsInView[0].x; 8251 mLastDeferTouchY = ted.mPointsInView[0].y; 8252 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8253 mDeferTouchMode = TOUCH_DONE_MODE; 8254 break; 8255 case WebViewCore.ACTION_LONGPRESS: 8256 HitTestResult hitTest = getHitTestResult(); 8257 if (hitTest != null && hitTest.mType 8258 != HitTestResult.UNKNOWN_TYPE) { 8259 performLongClick(); 8260 } 8261 mDeferTouchMode = TOUCH_DONE_MODE; 8262 break; 8263 } 8264 } 8265 } 8266 } 8267 } 8268 8269 //------------------------------------------------------------------------- 8270 // Methods can be called from a separate thread, like WebViewCore 8271 // If it needs to call the View system, it has to send message. 8272 //------------------------------------------------------------------------- 8273 8274 /** 8275 * General handler to receive message coming from webkit thread 8276 */ 8277 class PrivateHandler extends Handler { 8278 @Override 8279 public void handleMessage(Message msg) { 8280 // exclude INVAL_RECT_MSG_ID since it is frequently output 8281 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8282 if (msg.what >= FIRST_PRIVATE_MSG_ID 8283 && msg.what <= LAST_PRIVATE_MSG_ID) { 8284 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8285 - FIRST_PRIVATE_MSG_ID]); 8286 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8287 && msg.what <= LAST_PACKAGE_MSG_ID) { 8288 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8289 - FIRST_PACKAGE_MSG_ID]); 8290 } else { 8291 Log.v(LOGTAG, Integer.toString(msg.what)); 8292 } 8293 } 8294 if (mWebViewCore == null) { 8295 // after WebView's destroy() is called, skip handling messages. 8296 return; 8297 } 8298 if (mBlockWebkitViewMessages 8299 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8300 // Blocking messages from webkit 8301 return; 8302 } 8303 switch (msg.what) { 8304 case REMEMBER_PASSWORD: { 8305 mDatabase.setUsernamePassword( 8306 msg.getData().getString("host"), 8307 msg.getData().getString("username"), 8308 msg.getData().getString("password")); 8309 ((Message) msg.obj).sendToTarget(); 8310 break; 8311 } 8312 case NEVER_REMEMBER_PASSWORD: { 8313 mDatabase.setUsernamePassword( 8314 msg.getData().getString("host"), null, null); 8315 ((Message) msg.obj).sendToTarget(); 8316 break; 8317 } 8318 case PREVENT_DEFAULT_TIMEOUT: { 8319 // if timeout happens, cancel it so that it won't block UI 8320 // to continue handling touch events 8321 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8322 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8323 || (msg.arg1 == MotionEvent.ACTION_MOVE 8324 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8325 cancelWebCoreTouchEvent( 8326 viewToContentX(mLastTouchX + mScrollX), 8327 viewToContentY(mLastTouchY + mScrollY), 8328 true); 8329 } 8330 break; 8331 } 8332 case SCROLL_SELECT_TEXT: { 8333 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8334 mSentAutoScrollMessage = false; 8335 break; 8336 } 8337 if (mScrollingLayer == 0) { 8338 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8339 } else { 8340 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8341 mScrollingLayerRect.top + mAutoScrollY); 8342 } 8343 sendEmptyMessageDelayed( 8344 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8345 break; 8346 } 8347 case UPDATE_SELECTION: { 8348 if (mTouchMode == TOUCH_INIT_MODE 8349 || mTouchMode == TOUCH_SHORTPRESS_MODE 8350 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8351 updateSelection(); 8352 } 8353 break; 8354 } 8355 case SWITCH_TO_SHORTPRESS: { 8356 mInitialHitTestResult = null; // set by updateSelection() 8357 if (mTouchMode == TOUCH_INIT_MODE) { 8358 if (!getSettings().supportTouchOnly() 8359 && mPreventDefault != PREVENT_DEFAULT_YES) { 8360 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8361 updateSelection(); 8362 } else { 8363 // set to TOUCH_SHORTPRESS_MODE so that it won't 8364 // trigger double tap any more 8365 mTouchMode = TOUCH_SHORTPRESS_MODE; 8366 } 8367 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8368 mTouchMode = TOUCH_DONE_MODE; 8369 } 8370 break; 8371 } 8372 case SWITCH_TO_LONGPRESS: { 8373 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 8374 removeTouchHighlight(); 8375 } 8376 if (inFullScreenMode() || mDeferTouchProcess) { 8377 TouchEventData ted = new TouchEventData(); 8378 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8379 ted.mIds = new int[1]; 8380 ted.mIds[0] = 0; 8381 ted.mPoints = new Point[1]; 8382 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8383 viewToContentY(mLastTouchY + mScrollY)); 8384 ted.mPointsInView = new Point[1]; 8385 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8386 // metaState for long press is tricky. Should it be the 8387 // state when the press started or when the press was 8388 // released? Or some intermediary key state? For 8389 // simplicity for now, we don't set it. 8390 ted.mMetaState = 0; 8391 ted.mReprocess = mDeferTouchProcess; 8392 ted.mNativeLayer = nativeScrollableLayer( 8393 ted.mPoints[0].x, ted.mPoints[0].y, 8394 ted.mNativeLayerRect, null); 8395 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8396 mTouchEventQueue.preQueueTouchEventData(ted); 8397 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8398 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8399 mTouchMode = TOUCH_DONE_MODE; 8400 performLongClick(); 8401 } 8402 break; 8403 } 8404 case RELEASE_SINGLE_TAP: { 8405 doShortPress(); 8406 break; 8407 } 8408 case SCROLL_TO_MSG_ID: { 8409 // arg1 = animate, arg2 = onlyIfImeIsShowing 8410 // obj = Point(x, y) 8411 if (msg.arg2 == 1) { 8412 // This scroll is intended to bring the textfield into 8413 // view, but is only necessary if the IME is showing 8414 InputMethodManager imm = InputMethodManager.peekInstance(); 8415 if (imm == null || !imm.isAcceptingText() 8416 || (!imm.isActive(WebView.this) && (!inEditingMode() 8417 || !imm.isActive(mWebTextView)))) { 8418 break; 8419 } 8420 } 8421 final Point p = (Point) msg.obj; 8422 if (msg.arg1 == 1) { 8423 spawnContentScrollTo(p.x, p.y); 8424 } else { 8425 setContentScrollTo(p.x, p.y); 8426 } 8427 break; 8428 } 8429 case UPDATE_ZOOM_RANGE: { 8430 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8431 // mScrollX contains the new minPrefWidth 8432 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8433 break; 8434 } 8435 case REPLACE_BASE_CONTENT: { 8436 nativeReplaceBaseContent(msg.arg1); 8437 break; 8438 } 8439 case NEW_PICTURE_MSG_ID: { 8440 // called for new content 8441 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8442 setNewPicture(draw, true); 8443 break; 8444 } 8445 case WEBCORE_INITIALIZED_MSG_ID: 8446 // nativeCreate sets mNativeClass to a non-zero value 8447 String drawableDir = BrowserFrame.getRawResFilename( 8448 BrowserFrame.DRAWABLEDIR, mContext); 8449 nativeCreate(msg.arg1, drawableDir); 8450 if (mDelaySetPicture != null) { 8451 setNewPicture(mDelaySetPicture, true); 8452 mDelaySetPicture = null; 8453 } 8454 if (mIsPaused) { 8455 nativeSetPauseDrawing(mNativeClass, true); 8456 } 8457 break; 8458 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8459 // Make sure that the textfield is currently focused 8460 // and representing the same node as the pointer. 8461 if (inEditingMode() && 8462 mWebTextView.isSameTextField(msg.arg1)) { 8463 if (msg.arg2 == mTextGeneration) { 8464 String text = (String) msg.obj; 8465 if (null == text) { 8466 text = ""; 8467 } 8468 mWebTextView.setTextAndKeepSelection(text); 8469 } 8470 } 8471 break; 8472 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8473 displaySoftKeyboard(true); 8474 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8475 case UPDATE_TEXT_SELECTION_MSG_ID: 8476 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8477 (WebViewCore.TextSelectionData) msg.obj); 8478 break; 8479 case FORM_DID_BLUR: 8480 if (inEditingMode() 8481 && mWebTextView.isSameTextField(msg.arg1)) { 8482 hideSoftKeyboard(); 8483 } 8484 break; 8485 case RETURN_LABEL: 8486 if (inEditingMode() 8487 && mWebTextView.isSameTextField(msg.arg1)) { 8488 mWebTextView.setHint((String) msg.obj); 8489 InputMethodManager imm 8490 = InputMethodManager.peekInstance(); 8491 // The hint is propagated to the IME in 8492 // onCreateInputConnection. If the IME is already 8493 // active, restart it so that its hint text is updated. 8494 if (imm != null && imm.isActive(mWebTextView)) { 8495 imm.restartInput(mWebTextView); 8496 } 8497 } 8498 break; 8499 case UNHANDLED_NAV_KEY: 8500 navHandledKey(msg.arg1, 1, false, 0); 8501 break; 8502 case UPDATE_TEXT_ENTRY_MSG_ID: 8503 // this is sent after finishing resize in WebViewCore. Make 8504 // sure the text edit box is still on the screen. 8505 if (inEditingMode() && nativeCursorIsTextInput()) { 8506 updateWebTextViewPosition(); 8507 } 8508 break; 8509 case CLEAR_TEXT_ENTRY: 8510 clearTextEntry(); 8511 break; 8512 case INVAL_RECT_MSG_ID: { 8513 Rect r = (Rect)msg.obj; 8514 if (r == null) { 8515 invalidate(); 8516 } else { 8517 // we need to scale r from content into view coords, 8518 // which viewInvalidate() does for us 8519 viewInvalidate(r.left, r.top, r.right, r.bottom); 8520 } 8521 break; 8522 } 8523 case REQUEST_FORM_DATA: 8524 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8525 if (mWebTextView.isSameTextField(msg.arg1)) { 8526 mWebTextView.setAdapterCustom(adapter); 8527 } 8528 break; 8529 8530 case LONG_PRESS_CENTER: 8531 // as this is shared by keydown and trackballdown, reset all 8532 // the states 8533 mGotCenterDown = false; 8534 mTrackballDown = false; 8535 performLongClick(); 8536 break; 8537 8538 case WEBCORE_NEED_TOUCH_EVENTS: 8539 mForwardTouchEvents = (msg.arg1 != 0); 8540 break; 8541 8542 case PREVENT_TOUCH_ID: 8543 if (inFullScreenMode()) { 8544 break; 8545 } 8546 TouchEventData ted = (TouchEventData) msg.obj; 8547 8548 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8549 // WebCore is responding to us; remove pending timeout. 8550 // It will be re-posted when needed. 8551 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8552 } 8553 break; 8554 8555 case REQUEST_KEYBOARD: 8556 if (msg.arg1 == 0) { 8557 hideSoftKeyboard(); 8558 } else { 8559 displaySoftKeyboard(false); 8560 } 8561 break; 8562 8563 case FIND_AGAIN: 8564 // Ignore if find has been dismissed. 8565 if (mFindIsUp && mFindCallback != null) { 8566 mFindCallback.findAll(); 8567 } 8568 break; 8569 8570 case DRAG_HELD_MOTIONLESS: 8571 mHeldMotionless = MOTIONLESS_TRUE; 8572 invalidate(); 8573 // fall through to keep scrollbars awake 8574 8575 case AWAKEN_SCROLL_BARS: 8576 if (mTouchMode == TOUCH_DRAG_MODE 8577 && mHeldMotionless == MOTIONLESS_TRUE) { 8578 awakenScrollBars(ViewConfiguration 8579 .getScrollDefaultDelay(), false); 8580 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8581 .obtainMessage(AWAKEN_SCROLL_BARS), 8582 ViewConfiguration.getScrollDefaultDelay()); 8583 } 8584 break; 8585 8586 case DO_MOTION_UP: 8587 doMotionUp(msg.arg1, msg.arg2); 8588 break; 8589 8590 case SCREEN_ON: 8591 setKeepScreenOn(msg.arg1 == 1); 8592 break; 8593 8594 case ENTER_FULLSCREEN_VIDEO: 8595 int layerId = msg.arg1; 8596 8597 String url = (String) msg.obj; 8598 if (mHTML5VideoViewProxy != null) { 8599 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8600 } 8601 break; 8602 8603 case SHOW_FULLSCREEN: { 8604 View view = (View) msg.obj; 8605 int orientation = msg.arg1; 8606 int npp = msg.arg2; 8607 8608 if (inFullScreenMode()) { 8609 Log.w(LOGTAG, "Should not have another full screen."); 8610 dismissFullScreenMode(); 8611 } 8612 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8613 mFullScreenHolder.setContentView(view); 8614 mFullScreenHolder.show(); 8615 8616 break; 8617 } 8618 case HIDE_FULLSCREEN: 8619 dismissFullScreenMode(); 8620 break; 8621 8622 case DOM_FOCUS_CHANGED: 8623 if (inEditingMode()) { 8624 nativeClearCursor(); 8625 rebuildWebTextView(); 8626 } 8627 break; 8628 8629 case SHOW_RECT_MSG_ID: { 8630 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8631 int x = mScrollX; 8632 int left = contentToViewX(data.mLeft); 8633 int width = contentToViewDimension(data.mWidth); 8634 int maxWidth = contentToViewDimension(data.mContentWidth); 8635 int viewWidth = getViewWidth(); 8636 if (width < viewWidth) { 8637 // center align 8638 x += left + width / 2 - mScrollX - viewWidth / 2; 8639 } else { 8640 x += (int) (left + data.mXPercentInDoc * width 8641 - mScrollX - data.mXPercentInView * viewWidth); 8642 } 8643 if (DebugFlags.WEB_VIEW) { 8644 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8645 width + ",maxWidth=" + maxWidth + 8646 ",viewWidth=" + viewWidth + ",x=" 8647 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8648 ",xPercentInView=" + data.mXPercentInView+ ")"); 8649 } 8650 // use the passing content width to cap x as the current 8651 // mContentWidth may not be updated yet 8652 x = Math.max(0, 8653 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8654 int top = contentToViewY(data.mTop); 8655 int height = contentToViewDimension(data.mHeight); 8656 int maxHeight = contentToViewDimension(data.mContentHeight); 8657 int viewHeight = getViewHeight(); 8658 int y = (int) (top + data.mYPercentInDoc * height - 8659 data.mYPercentInView * viewHeight); 8660 if (DebugFlags.WEB_VIEW) { 8661 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8662 height + ",maxHeight=" + maxHeight + 8663 ",viewHeight=" + viewHeight + ",y=" 8664 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8665 ",yPercentInView=" + data.mYPercentInView+ ")"); 8666 } 8667 // use the passing content height to cap y as the current 8668 // mContentHeight may not be updated yet 8669 y = Math.max(0, 8670 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8671 // We need to take into account the visible title height 8672 // when scrolling since y is an absolute view position. 8673 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8674 scrollTo(x, y); 8675 } 8676 break; 8677 8678 case CENTER_FIT_RECT: 8679 centerFitRect((Rect)msg.obj); 8680 break; 8681 8682 case SET_SCROLLBAR_MODES: 8683 mHorizontalScrollBarMode = msg.arg1; 8684 mVerticalScrollBarMode = msg.arg2; 8685 break; 8686 8687 case SELECTION_STRING_CHANGED: 8688 if (mAccessibilityInjector != null) { 8689 String selectionString = (String) msg.obj; 8690 mAccessibilityInjector.onSelectionStringChange(selectionString); 8691 } 8692 break; 8693 8694 case SET_TOUCH_HIGHLIGHT_RECTS: 8695 @SuppressWarnings("unchecked") 8696 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8697 setTouchHighlightRects(rects); 8698 break; 8699 8700 case SAVE_WEBARCHIVE_FINISHED: 8701 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8702 if (saveMessage.mCallback != null) { 8703 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8704 } 8705 break; 8706 8707 case SET_AUTOFILLABLE: 8708 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8709 if (mWebTextView != null) { 8710 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8711 rebuildWebTextView(); 8712 } 8713 break; 8714 8715 case AUTOFILL_COMPLETE: 8716 if (mWebTextView != null) { 8717 // Clear the WebTextView adapter when AutoFill finishes 8718 // so that the drop down gets cleared. 8719 mWebTextView.setAdapterCustom(null); 8720 } 8721 break; 8722 8723 case SELECT_AT: 8724 nativeSelectAt(msg.arg1, msg.arg2); 8725 break; 8726 8727 default: 8728 super.handleMessage(msg); 8729 break; 8730 } 8731 } 8732 } 8733 8734 private void setTouchHighlightRects(ArrayList<Rect> rects) { 8735 invalidate(mTouchHighlightRegion.getBounds()); 8736 mTouchHighlightRegion.setEmpty(); 8737 if (rects != null) { 8738 for (Rect rect : rects) { 8739 Rect viewRect = contentToViewRect(rect); 8740 // some sites, like stories in nytimes.com, set 8741 // mouse event handler in the top div. It is not 8742 // user friendly to highlight the div if it covers 8743 // more than half of the screen. 8744 if (viewRect.width() < getWidth() >> 1 8745 || viewRect.height() < getHeight() >> 1) { 8746 mTouchHighlightRegion.union(viewRect); 8747 } else { 8748 Log.w(LOGTAG, "Skip the huge selection rect:" 8749 + viewRect); 8750 } 8751 } 8752 invalidate(mTouchHighlightRegion.getBounds()); 8753 } 8754 } 8755 8756 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8757 * acceleration) */ 8758 protected void pageSwapCallback() { 8759 if (inEditingMode()) { 8760 didUpdateWebTextViewDimensions(ANYWHERE); 8761 } 8762 } 8763 8764 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8765 if (mNativeClass == 0) { 8766 if (mDelaySetPicture != null) { 8767 throw new IllegalStateException("Tried to setNewPicture with" 8768 + " a delay picture already set! (memory leak)"); 8769 } 8770 // Not initialized yet, delay set 8771 mDelaySetPicture = draw; 8772 return; 8773 } 8774 WebViewCore.ViewState viewState = draw.mViewState; 8775 boolean isPictureAfterFirstLayout = viewState != null; 8776 8777 if (updateBaseLayer) { 8778 // Request a callback on pageSwap (to reposition the webtextview) 8779 boolean registerPageSwapCallback = 8780 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8781 8782 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8783 getSettings().getShowVisualIndicator(), 8784 isPictureAfterFirstLayout, registerPageSwapCallback); 8785 } 8786 final Point viewSize = draw.mViewSize; 8787 // We update the layout (i.e. request a layout from the 8788 // view system) if the last view size that we sent to 8789 // WebCore matches the view size of the picture we just 8790 // received in the fixed dimension. 8791 final boolean updateLayout = viewSize.x == mLastWidthSent 8792 && viewSize.y == mLastHeightSent; 8793 // Don't send scroll event for picture coming from webkit, 8794 // since the new picture may cause a scroll event to override 8795 // the saved history scroll position. 8796 mSendScrollEvent = false; 8797 recordNewContentSize(draw.mContentSize.x, 8798 draw.mContentSize.y, updateLayout); 8799 if (isPictureAfterFirstLayout) { 8800 // Reset the last sent data here since dealing with new page. 8801 mLastWidthSent = 0; 8802 mZoomManager.onFirstLayout(draw); 8803 int scrollX = viewState.mShouldStartScrolledRight 8804 ? getContentWidth() : viewState.mScrollX; 8805 int scrollY = viewState.mScrollY; 8806 setContentScrollTo(scrollX, scrollY); 8807 if (!mDrawHistory) { 8808 // As we are on a new page, remove the WebTextView. This 8809 // is necessary for page loads driven by webkit, and in 8810 // particular when the user was on a password field, so 8811 // the WebTextView was visible. 8812 clearTextEntry(); 8813 } 8814 } 8815 mSendScrollEvent = true; 8816 8817 if (DebugFlags.WEB_VIEW) { 8818 Rect b = draw.mInvalRegion.getBounds(); 8819 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8820 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8821 } 8822 invalidateContentRect(draw.mInvalRegion.getBounds()); 8823 8824 if (mPictureListener != null) { 8825 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8826 } 8827 8828 // update the zoom information based on the new picture 8829 mZoomManager.onNewPicture(draw); 8830 8831 if (draw.mFocusSizeChanged && inEditingMode()) { 8832 mFocusSizeChanged = true; 8833 } 8834 if (isPictureAfterFirstLayout) { 8835 mViewManager.postReadyToDrawAll(); 8836 } 8837 } 8838 8839 /** 8840 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8841 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8842 */ 8843 private void updateTextSelectionFromMessage(int nodePointer, 8844 int textGeneration, WebViewCore.TextSelectionData data) { 8845 if (inEditingMode() 8846 && mWebTextView.isSameTextField(nodePointer) 8847 && textGeneration == mTextGeneration) { 8848 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8849 } 8850 } 8851 8852 // Class used to use a dropdown for a <select> element 8853 private class InvokeListBox implements Runnable { 8854 // Whether the listbox allows multiple selection. 8855 private boolean mMultiple; 8856 // Passed in to a list with multiple selection to tell 8857 // which items are selected. 8858 private int[] mSelectedArray; 8859 // Passed in to a list with single selection to tell 8860 // where the initial selection is. 8861 private int mSelection; 8862 8863 private Container[] mContainers; 8864 8865 // Need these to provide stable ids to my ArrayAdapter, 8866 // which normally does not have stable ids. (Bug 1250098) 8867 private class Container extends Object { 8868 /** 8869 * Possible values for mEnabled. Keep in sync with OptionStatus in 8870 * WebViewCore.cpp 8871 */ 8872 final static int OPTGROUP = -1; 8873 final static int OPTION_DISABLED = 0; 8874 final static int OPTION_ENABLED = 1; 8875 8876 String mString; 8877 int mEnabled; 8878 int mId; 8879 8880 @Override 8881 public String toString() { 8882 return mString; 8883 } 8884 } 8885 8886 /** 8887 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8888 * and allow filtering. 8889 */ 8890 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8891 public MyArrayListAdapter() { 8892 super(mContext, 8893 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8894 com.android.internal.R.layout.webview_select_singlechoice, 8895 mContainers); 8896 } 8897 8898 @Override 8899 public View getView(int position, View convertView, 8900 ViewGroup parent) { 8901 // Always pass in null so that we will get a new CheckedTextView 8902 // Otherwise, an item which was previously used as an <optgroup> 8903 // element (i.e. has no check), could get used as an <option> 8904 // element, which needs a checkbox/radio, but it would not have 8905 // one. 8906 convertView = super.getView(position, null, parent); 8907 Container c = item(position); 8908 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8909 // ListView does not draw dividers between disabled and 8910 // enabled elements. Use a LinearLayout to provide dividers 8911 LinearLayout layout = new LinearLayout(mContext); 8912 layout.setOrientation(LinearLayout.VERTICAL); 8913 if (position > 0) { 8914 View dividerTop = new View(mContext); 8915 dividerTop.setBackgroundResource( 8916 android.R.drawable.divider_horizontal_bright); 8917 layout.addView(dividerTop); 8918 } 8919 8920 if (Container.OPTGROUP == c.mEnabled) { 8921 // Currently select_dialog_multichoice uses CheckedTextViews. 8922 // If that changes, the class cast will no longer be valid. 8923 if (mMultiple) { 8924 Assert.assertTrue(convertView instanceof CheckedTextView); 8925 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8926 } 8927 } else { 8928 // c.mEnabled == Container.OPTION_DISABLED 8929 // Draw the disabled element in a disabled state. 8930 convertView.setEnabled(false); 8931 } 8932 8933 layout.addView(convertView); 8934 if (position < getCount() - 1) { 8935 View dividerBottom = new View(mContext); 8936 dividerBottom.setBackgroundResource( 8937 android.R.drawable.divider_horizontal_bright); 8938 layout.addView(dividerBottom); 8939 } 8940 return layout; 8941 } 8942 return convertView; 8943 } 8944 8945 @Override 8946 public boolean hasStableIds() { 8947 // AdapterView's onChanged method uses this to determine whether 8948 // to restore the old state. Return false so that the old (out 8949 // of date) state does not replace the new, valid state. 8950 return false; 8951 } 8952 8953 private Container item(int position) { 8954 if (position < 0 || position >= getCount()) { 8955 return null; 8956 } 8957 return (Container) getItem(position); 8958 } 8959 8960 @Override 8961 public long getItemId(int position) { 8962 Container item = item(position); 8963 if (item == null) { 8964 return -1; 8965 } 8966 return item.mId; 8967 } 8968 8969 @Override 8970 public boolean areAllItemsEnabled() { 8971 return false; 8972 } 8973 8974 @Override 8975 public boolean isEnabled(int position) { 8976 Container item = item(position); 8977 if (item == null) { 8978 return false; 8979 } 8980 return Container.OPTION_ENABLED == item.mEnabled; 8981 } 8982 } 8983 8984 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8985 mMultiple = true; 8986 mSelectedArray = selected; 8987 8988 int length = array.length; 8989 mContainers = new Container[length]; 8990 for (int i = 0; i < length; i++) { 8991 mContainers[i] = new Container(); 8992 mContainers[i].mString = array[i]; 8993 mContainers[i].mEnabled = enabled[i]; 8994 mContainers[i].mId = i; 8995 } 8996 } 8997 8998 private InvokeListBox(String[] array, int[] enabled, int selection) { 8999 mSelection = selection; 9000 mMultiple = false; 9001 9002 int length = array.length; 9003 mContainers = new Container[length]; 9004 for (int i = 0; i < length; i++) { 9005 mContainers[i] = new Container(); 9006 mContainers[i].mString = array[i]; 9007 mContainers[i].mEnabled = enabled[i]; 9008 mContainers[i].mId = i; 9009 } 9010 } 9011 9012 /* 9013 * Whenever the data set changes due to filtering, this class ensures 9014 * that the checked item remains checked. 9015 */ 9016 private class SingleDataSetObserver extends DataSetObserver { 9017 private long mCheckedId; 9018 private ListView mListView; 9019 private Adapter mAdapter; 9020 9021 /* 9022 * Create a new observer. 9023 * @param id The ID of the item to keep checked. 9024 * @param l ListView for getting and clearing the checked states 9025 * @param a Adapter for getting the IDs 9026 */ 9027 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9028 mCheckedId = id; 9029 mListView = l; 9030 mAdapter = a; 9031 } 9032 9033 @Override 9034 public void onChanged() { 9035 // The filter may have changed which item is checked. Find the 9036 // item that the ListView thinks is checked. 9037 int position = mListView.getCheckedItemPosition(); 9038 long id = mAdapter.getItemId(position); 9039 if (mCheckedId != id) { 9040 // Clear the ListView's idea of the checked item, since 9041 // it is incorrect 9042 mListView.clearChoices(); 9043 // Search for mCheckedId. If it is in the filtered list, 9044 // mark it as checked 9045 int count = mAdapter.getCount(); 9046 for (int i = 0; i < count; i++) { 9047 if (mAdapter.getItemId(i) == mCheckedId) { 9048 mListView.setItemChecked(i, true); 9049 break; 9050 } 9051 } 9052 } 9053 } 9054 } 9055 9056 public void run() { 9057 final ListView listView = (ListView) LayoutInflater.from(mContext) 9058 .inflate(com.android.internal.R.layout.select_dialog, null); 9059 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9060 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9061 .setView(listView).setCancelable(true) 9062 .setInverseBackgroundForced(true); 9063 9064 if (mMultiple) { 9065 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9066 public void onClick(DialogInterface dialog, int which) { 9067 mWebViewCore.sendMessage( 9068 EventHub.LISTBOX_CHOICES, 9069 adapter.getCount(), 0, 9070 listView.getCheckedItemPositions()); 9071 }}); 9072 b.setNegativeButton(android.R.string.cancel, 9073 new DialogInterface.OnClickListener() { 9074 public void onClick(DialogInterface dialog, int which) { 9075 mWebViewCore.sendMessage( 9076 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9077 }}); 9078 } 9079 mListBoxDialog = b.create(); 9080 listView.setAdapter(adapter); 9081 listView.setFocusableInTouchMode(true); 9082 // There is a bug (1250103) where the checks in a ListView with 9083 // multiple items selected are associated with the positions, not 9084 // the ids, so the items do not properly retain their checks when 9085 // filtered. Do not allow filtering on multiple lists until 9086 // that bug is fixed. 9087 9088 listView.setTextFilterEnabled(!mMultiple); 9089 if (mMultiple) { 9090 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9091 int length = mSelectedArray.length; 9092 for (int i = 0; i < length; i++) { 9093 listView.setItemChecked(mSelectedArray[i], true); 9094 } 9095 } else { 9096 listView.setOnItemClickListener(new OnItemClickListener() { 9097 public void onItemClick(AdapterView<?> parent, View v, 9098 int position, long id) { 9099 // Rather than sending the message right away, send it 9100 // after the page regains focus. 9101 mListBoxMessage = Message.obtain(null, 9102 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9103 mListBoxDialog.dismiss(); 9104 mListBoxDialog = null; 9105 } 9106 }); 9107 if (mSelection != -1) { 9108 listView.setSelection(mSelection); 9109 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9110 listView.setItemChecked(mSelection, true); 9111 DataSetObserver observer = new SingleDataSetObserver( 9112 adapter.getItemId(mSelection), listView, adapter); 9113 adapter.registerDataSetObserver(observer); 9114 } 9115 } 9116 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9117 public void onCancel(DialogInterface dialog) { 9118 mWebViewCore.sendMessage( 9119 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9120 mListBoxDialog = null; 9121 } 9122 }); 9123 mListBoxDialog.show(); 9124 } 9125 } 9126 9127 private Message mListBoxMessage; 9128 9129 /* 9130 * Request a dropdown menu for a listbox with multiple selection. 9131 * 9132 * @param array Labels for the listbox. 9133 * @param enabledArray State for each element in the list. See static 9134 * integers in Container class. 9135 * @param selectedArray Which positions are initally selected. 9136 */ 9137 void requestListBox(String[] array, int[] enabledArray, int[] 9138 selectedArray) { 9139 mPrivateHandler.post( 9140 new InvokeListBox(array, enabledArray, selectedArray)); 9141 } 9142 9143 /* 9144 * Request a dropdown menu for a listbox with single selection or a single 9145 * <select> element. 9146 * 9147 * @param array Labels for the listbox. 9148 * @param enabledArray State for each element in the list. See static 9149 * integers in Container class. 9150 * @param selection Which position is initally selected. 9151 */ 9152 void requestListBox(String[] array, int[] enabledArray, int selection) { 9153 mPrivateHandler.post( 9154 new InvokeListBox(array, enabledArray, selection)); 9155 } 9156 9157 // called by JNI 9158 private void sendMoveFocus(int frame, int node) { 9159 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9160 new WebViewCore.CursorData(frame, node, 0, 0)); 9161 } 9162 9163 // called by JNI 9164 private void sendMoveMouse(int frame, int node, int x, int y) { 9165 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9166 new WebViewCore.CursorData(frame, node, x, y)); 9167 } 9168 9169 /* 9170 * Send a mouse move event to the webcore thread. 9171 * 9172 * @param removeFocus Pass true to remove the WebTextView, if present. 9173 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9174 * called by JNI 9175 */ 9176 @SuppressWarnings("unused") 9177 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9178 if (removeFocus) { 9179 clearTextEntry(); 9180 } 9181 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9182 stopPaintingCaret ? 1 : 0, 0, 9183 cursorData()); 9184 } 9185 9186 /** 9187 * Called by JNI to send a message to the webcore thread that the user 9188 * touched the webpage. 9189 * @param touchGeneration Generation number of the touch, to ignore touches 9190 * after a new one has been generated. 9191 * @param frame Pointer to the frame holding the node that was touched. 9192 * @param node Pointer to the node touched. 9193 * @param x x-position of the touch. 9194 * @param y y-position of the touch. 9195 */ 9196 private void sendMotionUp(int touchGeneration, 9197 int frame, int node, int x, int y) { 9198 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9199 touchUpData.mMoveGeneration = touchGeneration; 9200 touchUpData.mFrame = frame; 9201 touchUpData.mNode = node; 9202 touchUpData.mX = x; 9203 touchUpData.mY = y; 9204 touchUpData.mNativeLayer = nativeScrollableLayer( 9205 x, y, touchUpData.mNativeLayerRect, null); 9206 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9207 } 9208 9209 9210 private int getScaledMaxXScroll() { 9211 int width; 9212 if (mHeightCanMeasure == false) { 9213 width = getViewWidth() / 4; 9214 } else { 9215 Rect visRect = new Rect(); 9216 calcOurVisibleRect(visRect); 9217 width = visRect.width() / 2; 9218 } 9219 // FIXME the divisor should be retrieved from somewhere 9220 return viewToContentX(width); 9221 } 9222 9223 private int getScaledMaxYScroll() { 9224 int height; 9225 if (mHeightCanMeasure == false) { 9226 height = getViewHeight() / 4; 9227 } else { 9228 Rect visRect = new Rect(); 9229 calcOurVisibleRect(visRect); 9230 height = visRect.height() / 2; 9231 } 9232 // FIXME the divisor should be retrieved from somewhere 9233 // the closest thing today is hard-coded into ScrollView.java 9234 // (from ScrollView.java, line 363) int maxJump = height/2; 9235 return Math.round(height * mZoomManager.getInvScale()); 9236 } 9237 9238 /** 9239 * Called by JNI to invalidate view 9240 */ 9241 private void viewInvalidate() { 9242 invalidate(); 9243 } 9244 9245 /** 9246 * Pass the key directly to the page. This assumes that 9247 * nativePageShouldHandleShiftAndArrows() returned true. 9248 */ 9249 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9250 int keyEventAction; 9251 int eventHubAction; 9252 if (down) { 9253 keyEventAction = KeyEvent.ACTION_DOWN; 9254 eventHubAction = EventHub.KEY_DOWN; 9255 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9256 } else { 9257 keyEventAction = KeyEvent.ACTION_UP; 9258 eventHubAction = EventHub.KEY_UP; 9259 } 9260 9261 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9262 1, (metaState & KeyEvent.META_SHIFT_ON) 9263 | (metaState & KeyEvent.META_ALT_ON) 9264 | (metaState & KeyEvent.META_SYM_ON) 9265 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9266 mWebViewCore.sendMessage(eventHubAction, event); 9267 } 9268 9269 // return true if the key was handled 9270 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9271 long time) { 9272 if (mNativeClass == 0) { 9273 return false; 9274 } 9275 mInitialHitTestResult = null; 9276 mLastCursorTime = time; 9277 mLastCursorBounds = nativeGetCursorRingBounds(); 9278 boolean keyHandled 9279 = nativeMoveCursor(keyCode, count, noScroll) == false; 9280 if (DebugFlags.WEB_VIEW) { 9281 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9282 + " mLastCursorTime=" + mLastCursorTime 9283 + " handled=" + keyHandled); 9284 } 9285 if (keyHandled == false) { 9286 return keyHandled; 9287 } 9288 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9289 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9290 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9291 // set last touch so that context menu related functions will work 9292 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9293 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9294 if (mHeightCanMeasure == false) { 9295 return keyHandled; 9296 } 9297 Rect visRect = new Rect(); 9298 calcOurVisibleRect(visRect); 9299 Rect outset = new Rect(visRect); 9300 int maxXScroll = visRect.width() / 2; 9301 int maxYScroll = visRect.height() / 2; 9302 outset.inset(-maxXScroll, -maxYScroll); 9303 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9304 return keyHandled; 9305 } 9306 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9307 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9308 maxXScroll); 9309 if (maxH > 0) { 9310 pinScrollBy(maxH, 0, true, 0); 9311 } else { 9312 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9313 -maxXScroll); 9314 if (maxH < 0) { 9315 pinScrollBy(maxH, 0, true, 0); 9316 } 9317 } 9318 if (mLastCursorBounds.isEmpty()) return keyHandled; 9319 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9320 return keyHandled; 9321 } 9322 if (DebugFlags.WEB_VIEW) { 9323 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9324 + contentCursorRingBounds); 9325 } 9326 requestRectangleOnScreen(viewCursorRingBounds); 9327 return keyHandled; 9328 } 9329 9330 /** 9331 * @return Whether accessibility script has been injected. 9332 */ 9333 private boolean accessibilityScriptInjected() { 9334 // TODO: Maybe the injected script should announce its presence in 9335 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9336 // will check that as one of the conditions it looks for 9337 return mAccessibilityScriptInjected; 9338 } 9339 9340 /** 9341 * Set the background color. It's white by default. Pass 9342 * zero to make the view transparent. 9343 * @param color the ARGB color described by Color.java 9344 */ 9345 @Override 9346 public void setBackgroundColor(int color) { 9347 mBackgroundColor = color; 9348 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9349 } 9350 9351 /** 9352 * @deprecated This method is now obsolete. 9353 */ 9354 @Deprecated 9355 public void debugDump() { 9356 checkThread(); 9357 nativeDebugDump(); 9358 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9359 } 9360 9361 /** 9362 * Draw the HTML page into the specified canvas. This call ignores any 9363 * view-specific zoom, scroll offset, or other changes. It does not draw 9364 * any view-specific chrome, such as progress or URL bars. 9365 * 9366 * @hide only needs to be accessible to Browser and testing 9367 */ 9368 public void drawPage(Canvas canvas) { 9369 calcOurContentVisibleRectF(mVisibleContentRect); 9370 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9371 } 9372 9373 /** 9374 * Enable the communication b/t the webView and VideoViewProxy 9375 * 9376 * @hide only used by the Browser 9377 */ 9378 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9379 mHTML5VideoViewProxy = proxy; 9380 } 9381 9382 /** 9383 * Set the time to wait between passing touches to WebCore. See also the 9384 * TOUCH_SENT_INTERVAL member for further discussion. 9385 * 9386 * @hide This is only used by the DRT test application. 9387 */ 9388 public void setTouchInterval(int interval) { 9389 mCurrentTouchInterval = interval; 9390 } 9391 9392 /** 9393 * Update our cache with updatedText. 9394 * @param updatedText The new text to put in our cache. 9395 * @hide 9396 */ 9397 protected void updateCachedTextfield(String updatedText) { 9398 // Also place our generation number so that when we look at the cache 9399 // we recognize that it is up to date. 9400 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9401 } 9402 9403 /*package*/ void autoFillForm(int autoFillQueryId) { 9404 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9405 } 9406 9407 /* package */ ViewManager getViewManager() { 9408 return mViewManager; 9409 } 9410 9411 private static void checkThread() { 9412 if (Looper.myLooper() != Looper.getMainLooper()) { 9413 Throwable throwable = new Throwable( 9414 "Warning: A WebView method was called on thread '" + 9415 Thread.currentThread().getName() + "'. " + 9416 "All WebView methods must be called on the UI thread. " + 9417 "Future versions of WebView may not support use on other threads."); 9418 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9419 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9420 } 9421 } 9422 9423 /** @hide send content invalidate */ 9424 protected void contentInvalidateAll() { 9425 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9426 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9427 } 9428 } 9429 9430 /** @hide call pageSwapCallback upon next page swap */ 9431 protected void registerPageSwapCallback() { 9432 nativeRegisterPageSwapCallback(); 9433 } 9434 9435 /** 9436 * Begin collecting per-tile profiling data 9437 * 9438 * @hide only used by profiling tests 9439 */ 9440 public void tileProfilingStart() { 9441 nativeTileProfilingStart(); 9442 } 9443 /** 9444 * Return per-tile profiling data 9445 * 9446 * @hide only used by profiling tests 9447 */ 9448 public float tileProfilingStop() { 9449 return nativeTileProfilingStop(); 9450 } 9451 9452 /** @hide only used by profiling tests */ 9453 public void tileProfilingClear() { 9454 nativeTileProfilingClear(); 9455 } 9456 /** @hide only used by profiling tests */ 9457 public int tileProfilingNumFrames() { 9458 return nativeTileProfilingNumFrames(); 9459 } 9460 /** @hide only used by profiling tests */ 9461 public int tileProfilingNumTilesInFrame(int frame) { 9462 return nativeTileProfilingNumTilesInFrame(frame); 9463 } 9464 /** @hide only used by profiling tests */ 9465 public int tileProfilingGetInt(int frame, int tile, String key) { 9466 return nativeTileProfilingGetInt(frame, tile, key); 9467 } 9468 /** @hide only used by profiling tests */ 9469 public float tileProfilingGetFloat(int frame, int tile, String key) { 9470 return nativeTileProfilingGetFloat(frame, tile, key); 9471 } 9472 9473 private native int nativeCacheHitFramePointer(); 9474 private native boolean nativeCacheHitIsPlugin(); 9475 private native Rect nativeCacheHitNodeBounds(); 9476 private native int nativeCacheHitNodePointer(); 9477 /* package */ native void nativeClearCursor(); 9478 private native void nativeCreate(int ptr, String drawableDir); 9479 private native int nativeCursorFramePointer(); 9480 private native Rect nativeCursorNodeBounds(); 9481 private native int nativeCursorNodePointer(); 9482 private native boolean nativeCursorIntersects(Rect visibleRect); 9483 private native boolean nativeCursorIsAnchor(); 9484 private native boolean nativeCursorIsTextInput(); 9485 private native Point nativeCursorPosition(); 9486 private native String nativeCursorText(); 9487 /** 9488 * Returns true if the native cursor node says it wants to handle key events 9489 * (ala plugins). This can only be called if mNativeClass is non-zero! 9490 */ 9491 private native boolean nativeCursorWantsKeyEvents(); 9492 private native void nativeDebugDump(); 9493 private native void nativeDestroy(); 9494 9495 /** 9496 * Draw the picture set with a background color and extra. If 9497 * "splitIfNeeded" is true and the return value is not 0, the return value 9498 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9499 * native allocation can be freed. 9500 */ 9501 private native int nativeDraw(Canvas canvas, RectF visibleRect, 9502 int color, int extra, boolean splitIfNeeded); 9503 private native void nativeDumpDisplayTree(String urlOrNull); 9504 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9505 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9506 Rect viewRect, RectF visibleRect, float scale, int extras); 9507 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 9508 RectF visibleRect); 9509 private native void nativeExtendSelection(int x, int y); 9510 private native int nativeFindAll(String findLower, String findUpper, 9511 boolean sameAsLastSearch); 9512 private native void nativeFindNext(boolean forward); 9513 /* package */ native int nativeFocusCandidateFramePointer(); 9514 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9515 /* package */ native boolean nativeFocusCandidateIsPassword(); 9516 private native boolean nativeFocusCandidateIsRtlText(); 9517 private native boolean nativeFocusCandidateIsTextInput(); 9518 /* package */ native int nativeFocusCandidateMaxLength(); 9519 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9520 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 9521 /* package */ native String nativeFocusCandidateName(); 9522 private native Rect nativeFocusCandidateNodeBounds(); 9523 /** 9524 * @return A Rect with left, top, right, bottom set to the corresponding 9525 * padding values in the focus candidate, if it is a textfield/textarea with 9526 * a style. Otherwise return null. This is not actually a rectangle; Rect 9527 * is being used to pass four integers. 9528 */ 9529 private native Rect nativeFocusCandidatePaddingRect(); 9530 /* package */ native int nativeFocusCandidatePointer(); 9531 private native String nativeFocusCandidateText(); 9532 /* package */ native float nativeFocusCandidateTextSize(); 9533 /* package */ native int nativeFocusCandidateLineHeight(); 9534 /** 9535 * Returns an integer corresponding to WebView.cpp::type. 9536 * See WebTextView.setType() 9537 */ 9538 private native int nativeFocusCandidateType(); 9539 private native boolean nativeFocusIsPlugin(); 9540 private native Rect nativeFocusNodeBounds(); 9541 /* package */ native int nativeFocusNodePointer(); 9542 private native Rect nativeGetCursorRingBounds(); 9543 private native String nativeGetSelection(); 9544 private native boolean nativeHasCursorNode(); 9545 private native boolean nativeHasFocusNode(); 9546 private native void nativeHideCursor(); 9547 private native boolean nativeHitSelection(int x, int y); 9548 private native String nativeImageURI(int x, int y); 9549 private native Rect nativeLayerBounds(int layer); 9550 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9551 // return true if the page has been scrolled 9552 private native boolean nativeMotionUp(int x, int y, int slop); 9553 // returns false if it handled the key 9554 private native boolean nativeMoveCursor(int keyCode, int count, 9555 boolean noScroll); 9556 private native int nativeMoveGeneration(); 9557 private native void nativeMoveSelection(int x, int y); 9558 /** 9559 * @return true if the page should get the shift and arrow keys, rather 9560 * than select text/navigation. 9561 * 9562 * If the focus is a plugin, or if the focus and cursor match and are 9563 * a contentEditable element, then the page should handle these keys. 9564 */ 9565 private native boolean nativePageShouldHandleShiftAndArrows(); 9566 private native boolean nativePointInNavCache(int x, int y, int slop); 9567 // Like many other of our native methods, you must make sure that 9568 // mNativeClass is not null before calling this method. 9569 private native void nativeResetSelection(); 9570 private native Point nativeSelectableText(); 9571 private native void nativeSelectAll(); 9572 private native void nativeSelectBestAt(Rect rect); 9573 private native void nativeSelectAt(int x, int y); 9574 private native int nativeSelectionX(); 9575 private native int nativeSelectionY(); 9576 private native int nativeFindIndex(); 9577 private native void nativeSetExtendSelection(); 9578 private native void nativeSetFindIsEmpty(); 9579 private native void nativeSetFindIsUp(boolean isUp); 9580 private native void nativeSetHeightCanMeasure(boolean measure); 9581 private native void nativeSetBaseLayer(int layer, Region invalRegion, 9582 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9583 boolean registerPageSwapCallback); 9584 private native int nativeGetBaseLayer(); 9585 private native void nativeShowCursorTimed(); 9586 private native void nativeReplaceBaseContent(int content); 9587 private native void nativeCopyBaseContentToPicture(Picture pict); 9588 private native boolean nativeHasContent(); 9589 private native void nativeSetSelectionPointer(int nativeInstance, 9590 boolean set, float scale, int x, int y); 9591 private native boolean nativeStartSelection(int x, int y); 9592 private native void nativeStopGL(); 9593 private native Rect nativeSubtractLayers(Rect content); 9594 private native int nativeTextGeneration(); 9595 private native void nativeRegisterPageSwapCallback(); 9596 private native void nativeTileProfilingStart(); 9597 private native float nativeTileProfilingStop(); 9598 private native void nativeTileProfilingClear(); 9599 private native int nativeTileProfilingNumFrames(); 9600 private native int nativeTileProfilingNumTilesInFrame(int frame); 9601 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9602 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9603 // Never call this version except by updateCachedTextfield(String) - 9604 // we always want to pass in our generation number. 9605 private native void nativeUpdateCachedTextfield(String updatedText, 9606 int generation); 9607 private native boolean nativeWordSelection(int x, int y); 9608 // return NO_LEFTEDGE means failure. 9609 static final int NO_LEFTEDGE = -1; 9610 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9611 9612 private native void nativeUseHardwareAccelSkia(boolean enabled); 9613 9614 // Returns a pointer to the scrollable LayerAndroid at the given point. 9615 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9616 Rect scrollBounds); 9617 /** 9618 * Scroll the specified layer. 9619 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9620 * @param newX Destination x position to which to scroll. 9621 * @param newY Destination y position to which to scroll. 9622 * @return True if the layer is successfully scrolled. 9623 */ 9624 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9625 private native void nativeSetIsScrolling(boolean isScrolling); 9626 private native int nativeGetBackgroundColor(); 9627 native boolean nativeSetProperty(String key, String value); 9628 native String nativeGetProperty(String key); 9629 private native void nativeGetTextSelectionRegion(int instance, Region region); 9630 private native void nativeGetSelectionHandles(int instance, int[] handles); 9631 /** 9632 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9633 */ 9634 private static native void nativeOnTrimMemory(int level); 9635 private static native void nativeSetPauseDrawing(int instance, boolean pause); 9636} 9637