WebView.java revision 7b0fdc100e1dd711ba5534534b9405475c57566b
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.ActivityManager; 21import android.app.AlertDialog; 22import android.content.BroadcastReceiver; 23import android.content.ClipboardManager; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.DialogInterface; 27import android.content.DialogInterface.OnCancelListener; 28import android.content.Intent; 29import android.content.IntentFilter; 30import android.content.pm.PackageInfo; 31import android.content.pm.PackageManager; 32import android.content.res.Configuration; 33import android.database.DataSetObserver; 34import android.graphics.Bitmap; 35import android.graphics.BitmapFactory; 36import android.graphics.BitmapShader; 37import android.graphics.Canvas; 38import android.graphics.Color; 39import android.graphics.DrawFilter; 40import android.graphics.Paint; 41import android.graphics.PaintFlagsDrawFilter; 42import android.graphics.Picture; 43import android.graphics.Point; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region; 47import android.graphics.RegionIterator; 48import android.graphics.Shader; 49import android.graphics.drawable.Drawable; 50import android.net.Proxy; 51import android.net.ProxyProperties; 52import android.net.Uri; 53import android.net.http.SslCertificate; 54import android.os.AsyncTask; 55import android.os.Bundle; 56import android.os.Handler; 57import android.os.Looper; 58import android.os.Message; 59import android.os.StrictMode; 60import android.provider.Settings; 61import android.speech.tts.TextToSpeech; 62import android.util.AttributeSet; 63import android.util.EventLog; 64import android.util.Log; 65import android.view.Display; 66import android.view.Gravity; 67import android.view.HapticFeedbackConstants; 68import android.view.HardwareCanvas; 69import android.view.InputDevice; 70import android.view.KeyCharacterMap; 71import android.view.KeyEvent; 72import android.view.LayoutInflater; 73import android.view.MotionEvent; 74import android.view.ScaleGestureDetector; 75import android.view.SoundEffectConstants; 76import android.view.VelocityTracker; 77import android.view.View; 78import android.view.ViewConfiguration; 79import android.view.ViewGroup; 80import android.view.ViewParent; 81import android.view.ViewTreeObserver; 82import android.view.WindowManager; 83import android.view.accessibility.AccessibilityEvent; 84import android.view.accessibility.AccessibilityManager; 85import android.view.accessibility.AccessibilityNodeInfo; 86import android.view.inputmethod.EditorInfo; 87import android.view.inputmethod.InputConnection; 88import android.view.inputmethod.InputMethodManager; 89import android.webkit.WebTextView.AutoCompleteAdapter; 90import android.webkit.WebViewCore.DrawData; 91import android.webkit.WebViewCore.EventHub; 92import android.webkit.WebViewCore.TouchEventData; 93import android.webkit.WebViewCore.TouchHighlightData; 94import android.widget.AbsoluteLayout; 95import android.widget.Adapter; 96import android.widget.AdapterView; 97import android.widget.AdapterView.OnItemClickListener; 98import android.widget.ArrayAdapter; 99import android.widget.CheckedTextView; 100import android.widget.LinearLayout; 101import android.widget.ListView; 102import android.widget.OverScroller; 103import android.widget.Toast; 104 105import junit.framework.Assert; 106 107import java.io.File; 108import java.io.FileInputStream; 109import java.io.FileNotFoundException; 110import java.io.FileOutputStream; 111import java.io.IOException; 112import java.io.InputStream; 113import java.io.OutputStream; 114import java.net.URLDecoder; 115import java.util.ArrayList; 116import java.util.HashMap; 117import java.util.HashSet; 118import java.util.List; 119import java.util.Map; 120import java.util.Set; 121import java.util.Vector; 122import java.util.regex.Matcher; 123import java.util.regex.Pattern; 124 125import javax.microedition.khronos.egl.EGL10; 126import javax.microedition.khronos.egl.EGLContext; 127import javax.microedition.khronos.egl.EGLDisplay; 128import static javax.microedition.khronos.egl.EGL10.*; 129 130/** 131 * <p>A View that displays web pages. This class is the basis upon which you 132 * can roll your own web browser or simply display some online content within your Activity. 133 * It uses the WebKit rendering engine to display 134 * web pages and includes methods to navigate forward and backward 135 * through a history, zoom in and out, perform text searches and more.</p> 136 * <p>To enable the built-in zoom, set 137 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 138 * (introduced in API version 3). 139 * <p>Note that, in order for your Activity to access the Internet and load web pages 140 * in a WebView, you must add the {@code INTERNET} permissions to your 141 * Android Manifest file:</p> 142 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 143 * 144 * <p>This must be a child of the <a 145 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 146 * element.</p> 147 * 148 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 149 * tutorial</a>.</p> 150 * 151 * <h3>Basic usage</h3> 152 * 153 * <p>By default, a WebView provides no browser-like widgets, does not 154 * enable JavaScript and web page errors are ignored. If your goal is only 155 * to display some HTML as a part of your UI, this is probably fine; 156 * the user won't need to interact with the web page beyond reading 157 * it, and the web page won't need to interact with the user. If you 158 * actually want a full-blown web browser, then you probably want to 159 * invoke the Browser application with a URL Intent rather than show it 160 * with a WebView. For example: 161 * <pre> 162 * Uri uri = Uri.parse("http://www.example.com"); 163 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 164 * startActivity(intent); 165 * </pre> 166 * <p>See {@link android.content.Intent} for more information.</p> 167 * 168 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 169 * or set the entire Activity window as a WebView during {@link 170 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 171 * <pre class="prettyprint"> 172 * WebView webview = new WebView(this); 173 * setContentView(webview); 174 * </pre> 175 * 176 * <p>Then load the desired web page:</p> 177 * <pre> 178 * // Simplest usage: note that an exception will NOT be thrown 179 * // if there is an error loading this page (see below). 180 * webview.loadUrl("http://slashdot.org/"); 181 * 182 * // OR, you can also load from an HTML string: 183 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 184 * webview.loadData(summary, "text/html", null); 185 * // ... although note that there are restrictions on what this HTML can do. 186 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 187 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 188 * </pre> 189 * 190 * <p>A WebView has several customization points where you can add your 191 * own behavior. These are:</p> 192 * 193 * <ul> 194 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 195 * This class is called when something that might impact a 196 * browser UI happens, for instance, progress updates and 197 * JavaScript alerts are sent here (see <a 198 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 199 * </li> 200 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 201 * It will be called when things happen that impact the 202 * rendering of the content, eg, errors or form submissions. You 203 * can also intercept URL loading here (via {@link 204 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 205 * shouldOverrideUrlLoading()}).</li> 206 * <li>Modifying the {@link android.webkit.WebSettings}, such as 207 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 208 * setJavaScriptEnabled()}. </li> 209 * <li>Injecting Java objects into the WebView using the 210 * {@link android.webkit.WebView#addJavascriptInterface} method. This 211 * method allows you to inject Java objects into a page's JavaScript 212 * context, so that they can be accessed by JavaScript in the page.</li> 213 * </ul> 214 * 215 * <p>Here's a more complicated example, showing error handling, 216 * settings, and progress notification:</p> 217 * 218 * <pre class="prettyprint"> 219 * // Let's display the progress in the activity title bar, like the 220 * // browser app does. 221 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 222 * 223 * webview.getSettings().setJavaScriptEnabled(true); 224 * 225 * final Activity activity = this; 226 * webview.setWebChromeClient(new WebChromeClient() { 227 * public void onProgressChanged(WebView view, int progress) { 228 * // Activities and WebViews measure progress with different scales. 229 * // The progress meter will automatically disappear when we reach 100% 230 * activity.setProgress(progress * 1000); 231 * } 232 * }); 233 * webview.setWebViewClient(new WebViewClient() { 234 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 235 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 236 * } 237 * }); 238 * 239 * webview.loadUrl("http://slashdot.org/"); 240 * </pre> 241 * 242 * <h3>Cookie and window management</h3> 243 * 244 * <p>For obvious security reasons, your application has its own 245 * cache, cookie store etc.—it does not share the Browser 246 * application's data. Cookies are managed on a separate thread, so 247 * operations like index building don't block the UI 248 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 249 * if you want to use cookies in your application. 250 * </p> 251 * 252 * <p>By default, requests by the HTML to open new windows are 253 * ignored. This is true whether they be opened by JavaScript or by 254 * the target attribute on a link. You can customize your 255 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 256 * and render them in whatever manner you want.</p> 257 * 258 * <p>The standard behavior for an Activity is to be destroyed and 259 * recreated when the device orientation or any other configuration changes. This will cause 260 * the WebView to reload the current page. If you don't want that, you 261 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 262 * changes, and then just leave the WebView alone. It'll automatically 263 * re-orient itself as appropriate. Read <a 264 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 265 * more information about how to handle configuration changes during runtime.</p> 266 * 267 * 268 * <h3>Building web pages to support different screen densities</h3> 269 * 270 * <p>The screen density of a device is based on the screen resolution. A screen with low density 271 * has fewer available pixels per inch, where a screen with high density 272 * has more — sometimes significantly more — pixels per inch. The density of a 273 * screen is important because, other things being equal, a UI element (such as a button) whose 274 * height and width are defined in terms of screen pixels will appear larger on the lower density 275 * screen and smaller on the higher density screen. 276 * For simplicity, Android collapses all actual screen densities into three generalized densities: 277 * high, medium, and low.</p> 278 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 279 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 280 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 281 * are bigger). 282 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 283 * you (as a web developer) target screens with different screen densities.</p> 284 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 285 * <ul> 286 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 287 * default scaling factor used for the current device. For example, if the value of {@code 288 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 289 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 290 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 291 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 292 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 293 * (discussed below), then you can stop this default scaling behavior.</li> 294 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 295 * densities for which this style sheet is to be used. The corresponding value should be either 296 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 297 * density, or high density screens, respectively. For example: 298 * <pre> 299 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 300 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 301 * which is the high density pixel ratio.</p> 302 * </li> 303 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 304 * this to specify the target density for which the web page is designed, using the following 305 * values: 306 * <ul> 307 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 308 * occurs.</li> 309 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 310 * as appropriate.</li> 311 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 312 * low density screens scale down. This is also the default behavior.</li> 313 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 314 * as appropriate.</li> 315 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 316 * values are 70-400).</li> 317 * </ul> 318 * <p>Here's an example meta tag to specify the target density:</p> 319 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 320 * </ul> 321 * <p>If you want to modify your web page for different densities, by using the {@code 322 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 323 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 324 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 325 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 326 * 327 * 328 */ 329@Widget 330public class WebView extends AbsoluteLayout 331 implements ViewTreeObserver.OnGlobalFocusChangeListener, 332 ViewGroup.OnHierarchyChangeListener { 333 334 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 335 public void onGlobalLayout() { 336 if (isShown()) { 337 setGLRectViewport(); 338 } 339 } 340 } 341 342 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 343 public void onScrollChanged() { 344 if (isShown()) { 345 setGLRectViewport(); 346 } 347 } 348 } 349 350 // The listener to capture global layout change event. 351 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 352 353 // The listener to capture scroll event. 354 private InnerScrollChangedListener mScrollChangedListener = null; 355 356 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 357 // the screen all-the-time. Good for profiling our drawing code 358 static private final boolean AUTO_REDRAW_HACK = false; 359 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 360 private boolean mAutoRedraw; 361 362 // Reference to the AlertDialog displayed by InvokeListBox. 363 // It's used to dismiss the dialog in destroy if not done before. 364 private AlertDialog mListBoxDialog = null; 365 366 static final String LOGTAG = "webview"; 367 368 private ZoomManager mZoomManager; 369 370 private final Rect mGLRectViewport = new Rect(); 371 private final Rect mViewRectViewport = new Rect(); 372 private final RectF mVisibleContentRect = new RectF(); 373 private boolean mGLViewportEmpty = false; 374 375 /** 376 * Transportation object for returning WebView across thread boundaries. 377 */ 378 public class WebViewTransport { 379 private WebView mWebview; 380 381 /** 382 * Set the WebView to the transportation object. 383 * @param webview The WebView to transport. 384 */ 385 public synchronized void setWebView(WebView webview) { 386 mWebview = webview; 387 } 388 389 /** 390 * Return the WebView object. 391 * @return WebView The transported WebView object. 392 */ 393 public synchronized WebView getWebView() { 394 return mWebview; 395 } 396 } 397 398 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 399 private static OnTrimMemoryListener sInstance = null; 400 401 static void init(Context c) { 402 if (sInstance == null) { 403 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 404 } 405 } 406 407 private OnTrimMemoryListener(Context c) { 408 c.registerComponentCallbacks(this); 409 } 410 411 @Override 412 public void onConfigurationChanged(Configuration newConfig) { 413 // Ignore 414 } 415 416 @Override 417 public void onLowMemory() { 418 // Ignore 419 } 420 421 @Override 422 public void onTrimMemory(int level) { 423 if (DebugFlags.WEB_VIEW) { 424 Log.d("WebView", "onTrimMemory: " + level); 425 } 426 WebView.nativeOnTrimMemory(level); 427 } 428 429 } 430 431 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 432 private final CallbackProxy mCallbackProxy; 433 434 private final WebViewDatabase mDatabase; 435 436 // SSL certificate for the main top-level page (if secure) 437 private SslCertificate mCertificate; 438 439 // Native WebView pointer that is 0 until the native object has been 440 // created. 441 private int mNativeClass; 442 // This would be final but it needs to be set to null when the WebView is 443 // destroyed. 444 private WebViewCore mWebViewCore; 445 // Handler for dispatching UI messages. 446 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 447 private WebTextView mWebTextView; 448 // Used to ignore changes to webkit text that arrives to the UI side after 449 // more key events. 450 private int mTextGeneration; 451 452 /* package */ void incrementTextGeneration() { mTextGeneration++; } 453 454 // Used by WebViewCore to create child views. 455 /* package */ final ViewManager mViewManager; 456 457 // Used to display in full screen mode 458 PluginFullScreenHolder mFullScreenHolder; 459 460 /** 461 * Position of the last touch event in pixels. 462 * Use integer to prevent loss of dragging delta calculation accuracy; 463 * which was done in float and converted to integer, and resulted in gradual 464 * and compounding touch position and view dragging mismatch. 465 */ 466 private int mLastTouchX; 467 private int mLastTouchY; 468 private int mStartTouchX; 469 private int mStartTouchY; 470 private float mAverageAngle; 471 472 /** 473 * Time of the last touch event. 474 */ 475 private long mLastTouchTime; 476 477 /** 478 * Time of the last time sending touch event to WebViewCore 479 */ 480 private long mLastSentTouchTime; 481 482 /** 483 * The minimum elapsed time before sending another ACTION_MOVE event to 484 * WebViewCore. This really should be tuned for each type of the devices. 485 * For example in Google Map api test case, it takes Dream device at least 486 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 487 * triggering the layout and drawing the picture. While the same process 488 * takes 60+ms on the current high speed device. If we make 489 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 490 * to WebViewCore queue and the real layout and draw events will be pushed 491 * to further, which slows down the refresh rate. Choose 50 to favor the 492 * current high speed devices. For Dream like devices, 100 is a better 493 * choice. Maybe make this in the buildspec later. 494 * (Update 12/14/2010: changed to 0 since current device should be able to 495 * handle the raw events and Map team voted to have the raw events too. 496 */ 497 private static final int TOUCH_SENT_INTERVAL = 0; 498 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 499 500 /** 501 * Helper class to get velocity for fling 502 */ 503 VelocityTracker mVelocityTracker; 504 private int mMaximumFling; 505 private float mLastVelocity; 506 private float mLastVelX; 507 private float mLastVelY; 508 509 // The id of the native layer being scrolled. 510 private int mScrollingLayer; 511 private Rect mScrollingLayerRect = new Rect(); 512 513 // only trigger accelerated fling if the new velocity is at least 514 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 515 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 516 517 /** 518 * Touch mode 519 */ 520 private int mTouchMode = TOUCH_DONE_MODE; 521 private static final int TOUCH_INIT_MODE = 1; 522 private static final int TOUCH_DRAG_START_MODE = 2; 523 private static final int TOUCH_DRAG_MODE = 3; 524 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 525 private static final int TOUCH_SHORTPRESS_MODE = 5; 526 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 527 private static final int TOUCH_DONE_MODE = 7; 528 private static final int TOUCH_PINCH_DRAG = 8; 529 private static final int TOUCH_DRAG_LAYER_MODE = 9; 530 531 // Whether to forward the touch events to WebCore 532 // Can only be set by WebKit via JNI. 533 private boolean mForwardTouchEvents = false; 534 535 // Whether to prevent default during touch. The initial value depends on 536 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 537 // for touch down. Otherwise UI will wait for the answer of the first 538 // confirmed move before taking over the control. 539 private static final int PREVENT_DEFAULT_NO = 0; 540 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 541 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 542 private static final int PREVENT_DEFAULT_YES = 3; 543 private static final int PREVENT_DEFAULT_IGNORE = 4; 544 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 545 546 // true when the touch movement exceeds the slop 547 private boolean mConfirmMove; 548 549 // if true, touch events will be first processed by WebCore, if prevent 550 // default is not set, the UI will continue handle them. 551 private boolean mDeferTouchProcess; 552 553 // to avoid interfering with the current touch events, track them 554 // separately. Currently no snapping or fling in the deferred process mode 555 private int mDeferTouchMode = TOUCH_DONE_MODE; 556 private float mLastDeferTouchX; 557 private float mLastDeferTouchY; 558 559 // To keep track of whether the current drag was initiated by a WebTextView, 560 // so that we know not to hide the cursor 561 boolean mDragFromTextInput; 562 563 // Whether or not to draw the cursor ring. 564 private boolean mDrawCursorRing = true; 565 566 // true if onPause has been called (and not onResume) 567 private boolean mIsPaused; 568 569 private HitTestResult mInitialHitTestResult; 570 571 /** 572 * Customizable constant 573 */ 574 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 575 private int mTouchSlopSquare; 576 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 577 private int mDoubleTapSlopSquare; 578 // pre-computed density adjusted navigation slop 579 private int mNavSlop; 580 // This should be ViewConfiguration.getTapTimeout() 581 // But system time out is 100ms, which is too short for the browser. 582 // In the browser, if it switches out of tap too soon, jump tap won't work. 583 // In addition, a double tap on a trackpad will always have a duration of 584 // 300ms, so this value must be at least that (otherwise we will timeout the 585 // first tap and convert it to a long press). 586 private static final int TAP_TIMEOUT = 300; 587 // This should be ViewConfiguration.getLongPressTimeout() 588 // But system time out is 500ms, which is too short for the browser. 589 // With a short timeout, it's difficult to treat trigger a short press. 590 private static final int LONG_PRESS_TIMEOUT = 1000; 591 // needed to avoid flinging after a pause of no movement 592 private static final int MIN_FLING_TIME = 250; 593 // draw unfiltered after drag is held without movement 594 private static final int MOTIONLESS_TIME = 100; 595 // The amount of content to overlap between two screens when going through 596 // pages with the space bar, in pixels. 597 private static final int PAGE_SCROLL_OVERLAP = 24; 598 599 /** 600 * These prevent calling requestLayout if either dimension is fixed. This 601 * depends on the layout parameters and the measure specs. 602 */ 603 boolean mWidthCanMeasure; 604 boolean mHeightCanMeasure; 605 606 // Remember the last dimensions we sent to the native side so we can avoid 607 // sending the same dimensions more than once. 608 int mLastWidthSent; 609 int mLastHeightSent; 610 // Since view height sent to webkit could be fixed to avoid relayout, this 611 // value records the last sent actual view height. 612 int mLastActualHeightSent; 613 614 private int mContentWidth; // cache of value from WebViewCore 615 private int mContentHeight; // cache of value from WebViewCore 616 617 // Need to have the separate control for horizontal and vertical scrollbar 618 // style than the View's single scrollbar style 619 private boolean mOverlayHorizontalScrollbar = true; 620 private boolean mOverlayVerticalScrollbar = false; 621 622 // our standard speed. this way small distances will be traversed in less 623 // time than large distances, but we cap the duration, so that very large 624 // distances won't take too long to get there. 625 private static final int STD_SPEED = 480; // pixels per second 626 // time for the longest scroll animation 627 private static final int MAX_DURATION = 750; // milliseconds 628 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 629 630 // Used by OverScrollGlow 631 OverScroller mScroller; 632 633 private boolean mInOverScrollMode = false; 634 private static Paint mOverScrollBackground; 635 private static Paint mOverScrollBorder; 636 637 private boolean mWrapContent; 638 private static final int MOTIONLESS_FALSE = 0; 639 private static final int MOTIONLESS_PENDING = 1; 640 private static final int MOTIONLESS_TRUE = 2; 641 private static final int MOTIONLESS_IGNORE = 3; 642 private int mHeldMotionless; 643 644 // An instance for injecting accessibility in WebViews with disabled 645 // JavaScript or ones for which no accessibility script exists 646 private AccessibilityInjector mAccessibilityInjector; 647 648 // flag indicating if accessibility script is injected so we 649 // know to handle Shift and arrows natively first 650 private boolean mAccessibilityScriptInjected; 651 652 static final boolean USE_JAVA_TEXT_SELECTION = true; 653 static final boolean DEBUG_TEXT_HANDLES = false; 654 private Region mTextSelectionRegion = new Region(); 655 private Paint mTextSelectionPaint; 656 private Drawable mSelectHandleLeft; 657 private Drawable mSelectHandleRight; 658 659 static final boolean USE_WEBKIT_RINGS = false; 660 // the color used to highlight the touch rectangles 661 private static final int HIGHLIGHT_COLOR = 0x6633b5e5; 662 // the round corner for the highlight path 663 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 664 // the region indicating where the user touched on the screen 665 private Region mTouchHighlightRegion = new Region(); 666 // the paint for the touch highlight 667 private Paint mTouchHightlightPaint; 668 // debug only 669 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 670 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 671 private Paint mTouchCrossHairColor; 672 private int mTouchHighlightX; 673 private int mTouchHighlightY; 674 private long mTouchHighlightRequested; 675 676 // Basically this proxy is used to tell the Video to update layer tree at 677 // SetBaseLayer time and to pause when WebView paused. 678 private HTML5VideoViewProxy mHTML5VideoViewProxy; 679 680 // If we are using a set picture, don't send view updates to webkit 681 private boolean mBlockWebkitViewMessages = false; 682 683 // cached value used to determine if we need to switch drawing models 684 private boolean mHardwareAccelSkia = false; 685 686 /* 687 * Private message ids 688 */ 689 private static final int REMEMBER_PASSWORD = 1; 690 private static final int NEVER_REMEMBER_PASSWORD = 2; 691 private static final int SWITCH_TO_SHORTPRESS = 3; 692 private static final int SWITCH_TO_LONGPRESS = 4; 693 private static final int RELEASE_SINGLE_TAP = 5; 694 private static final int REQUEST_FORM_DATA = 6; 695 private static final int DRAG_HELD_MOTIONLESS = 8; 696 private static final int AWAKEN_SCROLL_BARS = 9; 697 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 698 private static final int SCROLL_SELECT_TEXT = 11; 699 700 701 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 702 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 703 704 /* 705 * Package message ids 706 */ 707 static final int SCROLL_TO_MSG_ID = 101; 708 static final int NEW_PICTURE_MSG_ID = 105; 709 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 710 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 711 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 712 static final int UPDATE_ZOOM_RANGE = 109; 713 static final int UNHANDLED_NAV_KEY = 110; 714 static final int CLEAR_TEXT_ENTRY = 111; 715 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 716 static final int SHOW_RECT_MSG_ID = 113; 717 static final int LONG_PRESS_CENTER = 114; 718 static final int PREVENT_TOUCH_ID = 115; 719 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 720 // obj=Rect in doc coordinates 721 static final int INVAL_RECT_MSG_ID = 117; 722 static final int REQUEST_KEYBOARD = 118; 723 static final int DO_MOTION_UP = 119; 724 static final int SHOW_FULLSCREEN = 120; 725 static final int HIDE_FULLSCREEN = 121; 726 static final int DOM_FOCUS_CHANGED = 122; 727 static final int REPLACE_BASE_CONTENT = 123; 728 static final int FORM_DID_BLUR = 124; 729 static final int RETURN_LABEL = 125; 730 static final int FIND_AGAIN = 126; 731 static final int CENTER_FIT_RECT = 127; 732 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 733 static final int SET_SCROLLBAR_MODES = 129; 734 static final int SELECTION_STRING_CHANGED = 130; 735 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 736 static final int SAVE_WEBARCHIVE_FINISHED = 132; 737 738 static final int SET_AUTOFILLABLE = 133; 739 static final int AUTOFILL_COMPLETE = 134; 740 741 static final int SELECT_AT = 135; 742 static final int SCREEN_ON = 136; 743 static final int ENTER_FULLSCREEN_VIDEO = 137; 744 static final int UPDATE_SELECTION = 138; 745 746 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 747 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 748 749 static final String[] HandlerPrivateDebugString = { 750 "REMEMBER_PASSWORD", // = 1; 751 "NEVER_REMEMBER_PASSWORD", // = 2; 752 "SWITCH_TO_SHORTPRESS", // = 3; 753 "SWITCH_TO_LONGPRESS", // = 4; 754 "RELEASE_SINGLE_TAP", // = 5; 755 "REQUEST_FORM_DATA", // = 6; 756 "RESUME_WEBCORE_PRIORITY", // = 7; 757 "DRAG_HELD_MOTIONLESS", // = 8; 758 "AWAKEN_SCROLL_BARS", // = 9; 759 "PREVENT_DEFAULT_TIMEOUT", // = 10; 760 "SCROLL_SELECT_TEXT" // = 11; 761 }; 762 763 static final String[] HandlerPackageDebugString = { 764 "SCROLL_TO_MSG_ID", // = 101; 765 "102", // = 102; 766 "103", // = 103; 767 "104", // = 104; 768 "NEW_PICTURE_MSG_ID", // = 105; 769 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 770 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 771 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 772 "UPDATE_ZOOM_RANGE", // = 109; 773 "UNHANDLED_NAV_KEY", // = 110; 774 "CLEAR_TEXT_ENTRY", // = 111; 775 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 776 "SHOW_RECT_MSG_ID", // = 113; 777 "LONG_PRESS_CENTER", // = 114; 778 "PREVENT_TOUCH_ID", // = 115; 779 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 780 "INVAL_RECT_MSG_ID", // = 117; 781 "REQUEST_KEYBOARD", // = 118; 782 "DO_MOTION_UP", // = 119; 783 "SHOW_FULLSCREEN", // = 120; 784 "HIDE_FULLSCREEN", // = 121; 785 "DOM_FOCUS_CHANGED", // = 122; 786 "REPLACE_BASE_CONTENT", // = 123; 787 "FORM_DID_BLUR", // = 124; 788 "RETURN_LABEL", // = 125; 789 "FIND_AGAIN", // = 126; 790 "CENTER_FIT_RECT", // = 127; 791 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 792 "SET_SCROLLBAR_MODES", // = 129; 793 "SELECTION_STRING_CHANGED", // = 130; 794 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 795 "SAVE_WEBARCHIVE_FINISHED", // = 132; 796 "SET_AUTOFILLABLE", // = 133; 797 "AUTOFILL_COMPLETE", // = 134; 798 "SELECT_AT", // = 135; 799 "SCREEN_ON", // = 136; 800 "ENTER_FULLSCREEN_VIDEO" // = 137; 801 }; 802 803 // If the site doesn't use the viewport meta tag to specify the viewport, 804 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 805 static final int DEFAULT_VIEWPORT_WIDTH = 980; 806 807 // normally we try to fit the content to the minimum preferred width 808 // calculated by the Webkit. To avoid the bad behavior when some site's 809 // minimum preferred width keeps growing when changing the viewport width or 810 // the minimum preferred width is huge, an upper limit is needed. 811 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 812 813 // initial scale in percent. 0 means using default. 814 private int mInitialScaleInPercent = 0; 815 816 // Whether or not a scroll event should be sent to webkit. This is only set 817 // to false when restoring the scroll position. 818 private boolean mSendScrollEvent = true; 819 820 private int mSnapScrollMode = SNAP_NONE; 821 private static final int SNAP_NONE = 0; 822 private static final int SNAP_LOCK = 1; // not a separate state 823 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 824 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 825 private boolean mSnapPositive; 826 827 // keep these in sync with their counterparts in WebView.cpp 828 private static final int DRAW_EXTRAS_NONE = 0; 829 private static final int DRAW_EXTRAS_FIND = 1; 830 private static final int DRAW_EXTRAS_SELECTION = 2; 831 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 832 833 // keep this in sync with WebCore:ScrollbarMode in WebKit 834 private static final int SCROLLBAR_AUTO = 0; 835 private static final int SCROLLBAR_ALWAYSOFF = 1; 836 // as we auto fade scrollbar, this is ignored. 837 private static final int SCROLLBAR_ALWAYSON = 2; 838 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 839 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 840 841 // constants for determining script injection strategy 842 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 843 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 844 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 845 846 // the alias via which accessibility JavaScript interface is exposed 847 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 848 849 // JavaScript to inject the script chooser which will 850 // pick the right script for the current URL 851 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 852 "javascript:(function() {" + 853 " var chooser = document.createElement('script');" + 854 " chooser.type = 'text/javascript';" + 855 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 856 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 857 " })();"; 858 859 // Regular expression that matches the "axs" URL parameter. 860 // The value of 0 means the accessibility script is opted out 861 // The value of 1 means the accessibility script is already injected 862 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 863 864 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 865 private TextToSpeech mTextToSpeech; 866 867 // variable to cache the above pattern in case accessibility is enabled. 868 private Pattern mMatchAxsUrlParameterPattern; 869 870 /** 871 * Max distance to overscroll by in pixels. 872 * This how far content can be pulled beyond its normal bounds by the user. 873 */ 874 private int mOverscrollDistance; 875 876 /** 877 * Max distance to overfling by in pixels. 878 * This is how far flinged content can move beyond the end of its normal bounds. 879 */ 880 private int mOverflingDistance; 881 882 private OverScrollGlow mOverScrollGlow; 883 884 // Used to match key downs and key ups 885 private Vector<Integer> mKeysPressed; 886 887 /* package */ static boolean mLogEvent = true; 888 889 // for event log 890 private long mLastTouchUpTime = 0; 891 892 private WebViewCore.AutoFillData mAutoFillData; 893 894 private static boolean sNotificationsEnabled = true; 895 896 /** 897 * URI scheme for telephone number 898 */ 899 public static final String SCHEME_TEL = "tel:"; 900 /** 901 * URI scheme for email address 902 */ 903 public static final String SCHEME_MAILTO = "mailto:"; 904 /** 905 * URI scheme for map address 906 */ 907 public static final String SCHEME_GEO = "geo:0,0?q="; 908 909 private int mBackgroundColor = Color.WHITE; 910 911 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 912 private int mAutoScrollX = 0; 913 private int mAutoScrollY = 0; 914 private int mMinAutoScrollX = 0; 915 private int mMaxAutoScrollX = 0; 916 private int mMinAutoScrollY = 0; 917 private int mMaxAutoScrollY = 0; 918 private Rect mScrollingLayerBounds = new Rect(); 919 private boolean mSentAutoScrollMessage = false; 920 921 // Temporary hack to work around the context removal upon memory pressure 922 private static boolean mIncrementEGLContextHack = false; 923 924 // used for serializing asynchronously handled touch events. 925 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 926 927 // Used to track whether picture updating was paused due to a window focus change. 928 private boolean mPictureUpdatePausedForFocusChange = false; 929 930 // Used to notify listeners of a new picture. 931 private PictureListener mPictureListener; 932 /** 933 * Interface to listen for new pictures as they change. 934 * @deprecated This interface is now obsolete. 935 */ 936 @Deprecated 937 public interface PictureListener { 938 /** 939 * Notify the listener that the picture has changed. 940 * @param view The WebView that owns the picture. 941 * @param picture The new picture. 942 * @deprecated Due to internal changes, the picture does not include 943 * composited layers such as fixed position elements or scrollable divs. 944 * While the PictureListener API can still be used to detect changes in 945 * the WebView content, you are advised against its usage until a replacement 946 * is provided in a future Android release 947 */ 948 @Deprecated 949 public void onNewPicture(WebView view, Picture picture); 950 } 951 952 // FIXME: Want to make this public, but need to change the API file. 953 public /*static*/ class HitTestResult { 954 /** 955 * Default HitTestResult, where the target is unknown 956 */ 957 public static final int UNKNOWN_TYPE = 0; 958 /** 959 * @deprecated This type is no longer used. 960 */ 961 @Deprecated 962 public static final int ANCHOR_TYPE = 1; 963 /** 964 * HitTestResult for hitting a phone number 965 */ 966 public static final int PHONE_TYPE = 2; 967 /** 968 * HitTestResult for hitting a map address 969 */ 970 public static final int GEO_TYPE = 3; 971 /** 972 * HitTestResult for hitting an email address 973 */ 974 public static final int EMAIL_TYPE = 4; 975 /** 976 * HitTestResult for hitting an HTML::img tag 977 */ 978 public static final int IMAGE_TYPE = 5; 979 /** 980 * @deprecated This type is no longer used. 981 */ 982 @Deprecated 983 public static final int IMAGE_ANCHOR_TYPE = 6; 984 /** 985 * HitTestResult for hitting a HTML::a tag with src=http 986 */ 987 public static final int SRC_ANCHOR_TYPE = 7; 988 /** 989 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 990 */ 991 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 992 /** 993 * HitTestResult for hitting an edit text area 994 */ 995 public static final int EDIT_TEXT_TYPE = 9; 996 997 private int mType; 998 private String mExtra; 999 1000 HitTestResult() { 1001 mType = UNKNOWN_TYPE; 1002 } 1003 1004 private void setType(int type) { 1005 mType = type; 1006 } 1007 1008 private void setExtra(String extra) { 1009 mExtra = extra; 1010 } 1011 1012 public int getType() { 1013 return mType; 1014 } 1015 1016 public String getExtra() { 1017 return mExtra; 1018 } 1019 } 1020 1021 /** 1022 * Construct a new WebView with a Context object. 1023 * @param context A Context object used to access application assets. 1024 */ 1025 public WebView(Context context) { 1026 this(context, null); 1027 } 1028 1029 /** 1030 * Construct a new WebView with layout parameters. 1031 * @param context A Context object used to access application assets. 1032 * @param attrs An AttributeSet passed to our parent. 1033 */ 1034 public WebView(Context context, AttributeSet attrs) { 1035 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1036 } 1037 1038 /** 1039 * Construct a new WebView with layout parameters and a default style. 1040 * @param context A Context object used to access application assets. 1041 * @param attrs An AttributeSet passed to our parent. 1042 * @param defStyle The default style resource ID. 1043 */ 1044 public WebView(Context context, AttributeSet attrs, int defStyle) { 1045 this(context, attrs, defStyle, false); 1046 } 1047 1048 /** 1049 * Construct a new WebView with layout parameters and a default style. 1050 * @param context A Context object used to access application assets. 1051 * @param attrs An AttributeSet passed to our parent. 1052 * @param defStyle The default style resource ID. 1053 */ 1054 public WebView(Context context, AttributeSet attrs, int defStyle, 1055 boolean privateBrowsing) { 1056 this(context, attrs, defStyle, null, privateBrowsing); 1057 } 1058 1059 /** 1060 * Construct a new WebView with layout parameters, a default style and a set 1061 * of custom Javscript interfaces to be added to the WebView at initialization 1062 * time. This guarantees that these interfaces will be available when the JS 1063 * context is initialized. 1064 * @param context A Context object used to access application assets. 1065 * @param attrs An AttributeSet passed to our parent. 1066 * @param defStyle The default style resource ID. 1067 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1068 * object implementing those interfaces, as values. 1069 * @hide pending API council approval. 1070 */ 1071 protected WebView(Context context, AttributeSet attrs, int defStyle, 1072 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1073 super(context, attrs, defStyle); 1074 checkThread(); 1075 1076 if (context == null) { 1077 throw new IllegalArgumentException("Invalid context argument"); 1078 } 1079 1080 // Used by the chrome stack to find application paths 1081 JniUtil.setContext(context); 1082 1083 mCallbackProxy = new CallbackProxy(context, this); 1084 mViewManager = new ViewManager(this); 1085 L10nUtils.setApplicationContext(context.getApplicationContext()); 1086 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1087 mDatabase = WebViewDatabase.getInstance(context); 1088 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1089 mZoomManager = new ZoomManager(this, mCallbackProxy); 1090 1091 /* The init method must follow the creation of certain member variables, 1092 * such as the mZoomManager. 1093 */ 1094 init(); 1095 setupPackageListener(context); 1096 setupProxyListener(context); 1097 updateMultiTouchSupport(context); 1098 1099 if (privateBrowsing) { 1100 startPrivateBrowsing(); 1101 } 1102 1103 mAutoFillData = new WebViewCore.AutoFillData(); 1104 } 1105 1106 private static class ProxyReceiver extends BroadcastReceiver { 1107 @Override 1108 public void onReceive(Context context, Intent intent) { 1109 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1110 handleProxyBroadcast(intent); 1111 } 1112 } 1113 } 1114 1115 /* 1116 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1117 */ 1118 private static ProxyReceiver sProxyReceiver; 1119 1120 /* 1121 * @param context This method expects this to be a valid context 1122 */ 1123 private static synchronized void setupProxyListener(Context context) { 1124 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1125 return; 1126 } 1127 IntentFilter filter = new IntentFilter(); 1128 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1129 sProxyReceiver = new ProxyReceiver(); 1130 Intent currentProxy = context.getApplicationContext().registerReceiver( 1131 sProxyReceiver, filter); 1132 if (currentProxy != null) { 1133 handleProxyBroadcast(currentProxy); 1134 } 1135 } 1136 1137 /* 1138 * @param context This method expects this to be a valid context 1139 */ 1140 private static synchronized void disableProxyListener(Context context) { 1141 if (sProxyReceiver == null) 1142 return; 1143 1144 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1145 sProxyReceiver = null; 1146 } 1147 1148 private static void handleProxyBroadcast(Intent intent) { 1149 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1150 if (proxyProperties == null || proxyProperties.getHost() == null) { 1151 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1152 return; 1153 } 1154 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1155 } 1156 1157 /* 1158 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1159 * or ACTION_PACKAGE_REMOVED. 1160 */ 1161 private static boolean sPackageInstallationReceiverAdded = false; 1162 1163 /* 1164 * A set of Google packages we monitor for the 1165 * navigator.isApplicationInstalled() API. Add additional packages as 1166 * needed. 1167 */ 1168 private static Set<String> sGoogleApps; 1169 static { 1170 sGoogleApps = new HashSet<String>(); 1171 sGoogleApps.add("com.google.android.youtube"); 1172 } 1173 1174 private static class PackageListener extends BroadcastReceiver { 1175 @Override 1176 public void onReceive(Context context, Intent intent) { 1177 final String action = intent.getAction(); 1178 final String packageName = intent.getData().getSchemeSpecificPart(); 1179 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1180 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1181 // if it is replacing, refreshPlugins() when adding 1182 return; 1183 } 1184 1185 if (sGoogleApps.contains(packageName)) { 1186 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1187 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1188 } else { 1189 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1190 } 1191 } 1192 1193 PluginManager pm = PluginManager.getInstance(context); 1194 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1195 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1196 } 1197 } 1198 } 1199 1200 private void setupPackageListener(Context context) { 1201 1202 /* 1203 * we must synchronize the instance check and the creation of the 1204 * receiver to ensure that only ONE receiver exists for all WebView 1205 * instances. 1206 */ 1207 synchronized (WebView.class) { 1208 1209 // if the receiver already exists then we do not need to register it 1210 // again 1211 if (sPackageInstallationReceiverAdded) { 1212 return; 1213 } 1214 1215 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1216 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1217 filter.addDataScheme("package"); 1218 BroadcastReceiver packageListener = new PackageListener(); 1219 context.getApplicationContext().registerReceiver(packageListener, filter); 1220 sPackageInstallationReceiverAdded = true; 1221 } 1222 1223 // check if any of the monitored apps are already installed 1224 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1225 1226 @Override 1227 protected Set<String> doInBackground(Void... unused) { 1228 Set<String> installedPackages = new HashSet<String>(); 1229 PackageManager pm = mContext.getPackageManager(); 1230 for (String name : sGoogleApps) { 1231 try { 1232 PackageInfo pInfo = pm.getPackageInfo(name, 1233 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1234 installedPackages.add(name); 1235 } catch (PackageManager.NameNotFoundException e) { 1236 // package not found 1237 } 1238 } 1239 return installedPackages; 1240 } 1241 1242 // Executes on the UI thread 1243 @Override 1244 protected void onPostExecute(Set<String> installedPackages) { 1245 if (mWebViewCore != null) { 1246 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1247 } 1248 } 1249 }; 1250 task.execute(); 1251 } 1252 1253 void updateMultiTouchSupport(Context context) { 1254 mZoomManager.updateMultiTouchSupport(context); 1255 } 1256 1257 private void init() { 1258 OnTrimMemoryListener.init(getContext()); 1259 1260 setWillNotDraw(false); 1261 setFocusable(true); 1262 setFocusableInTouchMode(true); 1263 setClickable(true); 1264 setLongClickable(true); 1265 1266 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1267 int slop = configuration.getScaledTouchSlop(); 1268 mTouchSlopSquare = slop * slop; 1269 slop = configuration.getScaledDoubleTapSlop(); 1270 mDoubleTapSlopSquare = slop * slop; 1271 final float density = getContext().getResources().getDisplayMetrics().density; 1272 // use one line height, 16 based on our current default font, for how 1273 // far we allow a touch be away from the edge of a link 1274 mNavSlop = (int) (16 * density); 1275 mZoomManager.init(density); 1276 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1277 1278 // Compute the inverse of the density squared. 1279 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1280 1281 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1282 mOverflingDistance = configuration.getScaledOverflingDistance(); 1283 1284 setScrollBarStyle(super.getScrollBarStyle()); 1285 // Initially use a size of two, since the user is likely to only hold 1286 // down two keys at a time (shift + another key) 1287 mKeysPressed = new Vector<Integer>(2); 1288 mHTML5VideoViewProxy = null ; 1289 } 1290 1291 @Override 1292 public boolean shouldDelayChildPressedState() { 1293 return true; 1294 } 1295 1296 /** 1297 * Adds accessibility APIs to JavaScript. 1298 * 1299 * Note: This method is responsible to performing the necessary 1300 * check if the accessibility APIs should be exposed. 1301 */ 1302 private void addAccessibilityApisToJavaScript() { 1303 if (AccessibilityManager.getInstance(mContext).isEnabled() 1304 && getSettings().getJavaScriptEnabled()) { 1305 // exposing the TTS for now ... 1306 mTextToSpeech = new TextToSpeech(getContext(), null); 1307 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1308 } 1309 } 1310 1311 /** 1312 * Removes accessibility APIs from JavaScript. 1313 */ 1314 private void removeAccessibilityApisFromJavaScript() { 1315 // exposing the TTS for now ... 1316 if (mTextToSpeech != null) { 1317 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1318 mTextToSpeech.shutdown(); 1319 mTextToSpeech = null; 1320 } 1321 } 1322 1323 @Override 1324 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1325 super.onInitializeAccessibilityNodeInfo(info); 1326 info.setScrollable(isScrollableForAccessibility()); 1327 } 1328 1329 @Override 1330 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1331 super.onInitializeAccessibilityEvent(event); 1332 event.setScrollable(isScrollableForAccessibility()); 1333 event.setScrollX(mScrollX); 1334 event.setScrollY(mScrollY); 1335 final int convertedContentWidth = contentToViewX(getContentWidth()); 1336 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1337 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1338 final int convertedContentHeight = contentToViewY(getContentHeight()); 1339 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1340 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1341 } 1342 1343 private boolean isScrollableForAccessibility() { 1344 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1345 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1346 } 1347 1348 @Override 1349 public void setOverScrollMode(int mode) { 1350 super.setOverScrollMode(mode); 1351 if (mode != OVER_SCROLL_NEVER) { 1352 if (mOverScrollGlow == null) { 1353 mOverScrollGlow = new OverScrollGlow(this); 1354 } 1355 } else { 1356 mOverScrollGlow = null; 1357 } 1358 } 1359 1360 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1361 final float density = mContext.getResources().getDisplayMetrics().density 1362 * 100 / zoomDensity; 1363 updateDefaultZoomDensity(density); 1364 } 1365 1366 /* package */ void updateDefaultZoomDensity(float density) { 1367 mNavSlop = (int) (16 * density); 1368 mZoomManager.updateDefaultZoomDensity(density); 1369 } 1370 1371 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1372 String password, final Message resumeMsg) { 1373 boolean rVal = false; 1374 if (resumeMsg == null) { 1375 // null resumeMsg implies saving password silently 1376 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1377 } else { 1378 final Message remember = mPrivateHandler.obtainMessage( 1379 REMEMBER_PASSWORD); 1380 remember.getData().putString("host", schemePlusHost); 1381 remember.getData().putString("username", username); 1382 remember.getData().putString("password", password); 1383 remember.obj = resumeMsg; 1384 1385 final Message neverRemember = mPrivateHandler.obtainMessage( 1386 NEVER_REMEMBER_PASSWORD); 1387 neverRemember.getData().putString("host", schemePlusHost); 1388 neverRemember.getData().putString("username", username); 1389 neverRemember.getData().putString("password", password); 1390 neverRemember.obj = resumeMsg; 1391 1392 new AlertDialog.Builder(getContext()) 1393 .setTitle(com.android.internal.R.string.save_password_label) 1394 .setMessage(com.android.internal.R.string.save_password_message) 1395 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1396 new DialogInterface.OnClickListener() { 1397 public void onClick(DialogInterface dialog, int which) { 1398 resumeMsg.sendToTarget(); 1399 } 1400 }) 1401 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1402 new DialogInterface.OnClickListener() { 1403 public void onClick(DialogInterface dialog, int which) { 1404 remember.sendToTarget(); 1405 } 1406 }) 1407 .setNegativeButton(com.android.internal.R.string.save_password_never, 1408 new DialogInterface.OnClickListener() { 1409 public void onClick(DialogInterface dialog, int which) { 1410 neverRemember.sendToTarget(); 1411 } 1412 }) 1413 .setOnCancelListener(new OnCancelListener() { 1414 public void onCancel(DialogInterface dialog) { 1415 resumeMsg.sendToTarget(); 1416 } 1417 }).show(); 1418 // Return true so that WebViewCore will pause while the dialog is 1419 // up. 1420 rVal = true; 1421 } 1422 return rVal; 1423 } 1424 1425 @Override 1426 public void setScrollBarStyle(int style) { 1427 if (style == View.SCROLLBARS_INSIDE_INSET 1428 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1429 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1430 } else { 1431 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1432 } 1433 super.setScrollBarStyle(style); 1434 } 1435 1436 /** 1437 * Specify whether the horizontal scrollbar has overlay style. 1438 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1439 */ 1440 public void setHorizontalScrollbarOverlay(boolean overlay) { 1441 checkThread(); 1442 mOverlayHorizontalScrollbar = overlay; 1443 } 1444 1445 /** 1446 * Specify whether the vertical scrollbar has overlay style. 1447 * @param overlay TRUE if vertical scrollbar should have overlay style. 1448 */ 1449 public void setVerticalScrollbarOverlay(boolean overlay) { 1450 checkThread(); 1451 mOverlayVerticalScrollbar = overlay; 1452 } 1453 1454 /** 1455 * Return whether horizontal scrollbar has overlay style 1456 * @return TRUE if horizontal scrollbar has overlay style. 1457 */ 1458 public boolean overlayHorizontalScrollbar() { 1459 checkThread(); 1460 return mOverlayHorizontalScrollbar; 1461 } 1462 1463 /** 1464 * Return whether vertical scrollbar has overlay style 1465 * @return TRUE if vertical scrollbar has overlay style. 1466 */ 1467 public boolean overlayVerticalScrollbar() { 1468 checkThread(); 1469 return mOverlayVerticalScrollbar; 1470 } 1471 1472 /* 1473 * Return the width of the view where the content of WebView should render 1474 * to. 1475 * Note: this can be called from WebCoreThread. 1476 */ 1477 /* package */ int getViewWidth() { 1478 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1479 return getWidth(); 1480 } else { 1481 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1482 } 1483 } 1484 1485 /** 1486 * returns the height of the titlebarview (if any). Does not care about 1487 * scrolling 1488 * @hide 1489 */ 1490 protected int getTitleHeight() { 1491 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1492 } 1493 1494 /** 1495 * Return the amount of the titlebarview (if any) that is visible 1496 * 1497 * @deprecated This method is now obsolete. 1498 */ 1499 public int getVisibleTitleHeight() { 1500 checkThread(); 1501 return getVisibleTitleHeightImpl(); 1502 } 1503 1504 private int getVisibleTitleHeightImpl() { 1505 // need to restrict mScrollY due to over scroll 1506 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1507 getOverlappingActionModeHeight()); 1508 } 1509 1510 private int mCachedOverlappingActionModeHeight = -1; 1511 1512 private int getOverlappingActionModeHeight() { 1513 if (mFindCallback == null) { 1514 return 0; 1515 } 1516 if (mCachedOverlappingActionModeHeight < 0) { 1517 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1518 mCachedOverlappingActionModeHeight = Math.max(0, 1519 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1520 } 1521 return mCachedOverlappingActionModeHeight; 1522 } 1523 1524 /* 1525 * Return the height of the view where the content of WebView should render 1526 * to. Note that this excludes mTitleBar, if there is one. 1527 * Note: this can be called from WebCoreThread. 1528 */ 1529 /* package */ int getViewHeight() { 1530 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1531 } 1532 1533 int getViewHeightWithTitle() { 1534 int height = getHeight(); 1535 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1536 height -= getHorizontalScrollbarHeight(); 1537 } 1538 return height; 1539 } 1540 1541 /** 1542 * @return The SSL certificate for the main top-level page or null if 1543 * there is no certificate (the site is not secure). 1544 */ 1545 public SslCertificate getCertificate() { 1546 checkThread(); 1547 return mCertificate; 1548 } 1549 1550 /** 1551 * Sets the SSL certificate for the main top-level page. 1552 */ 1553 public void setCertificate(SslCertificate certificate) { 1554 checkThread(); 1555 if (DebugFlags.WEB_VIEW) { 1556 Log.v(LOGTAG, "setCertificate=" + certificate); 1557 } 1558 // here, the certificate can be null (if the site is not secure) 1559 mCertificate = certificate; 1560 } 1561 1562 //------------------------------------------------------------------------- 1563 // Methods called by activity 1564 //------------------------------------------------------------------------- 1565 1566 /** 1567 * Save the username and password for a particular host in the WebView's 1568 * internal database. 1569 * @param host The host that required the credentials. 1570 * @param username The username for the given host. 1571 * @param password The password for the given host. 1572 */ 1573 public void savePassword(String host, String username, String password) { 1574 checkThread(); 1575 mDatabase.setUsernamePassword(host, username, password); 1576 } 1577 1578 /** 1579 * Set the HTTP authentication credentials for a given host and realm. 1580 * 1581 * @param host The host for the credentials. 1582 * @param realm The realm for the credentials. 1583 * @param username The username for the password. If it is null, it means 1584 * password can't be saved. 1585 * @param password The password 1586 */ 1587 public void setHttpAuthUsernamePassword(String host, String realm, 1588 String username, String password) { 1589 checkThread(); 1590 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1591 } 1592 1593 /** 1594 * Retrieve the HTTP authentication username and password for a given 1595 * host & realm pair 1596 * 1597 * @param host The host for which the credentials apply. 1598 * @param realm The realm for which the credentials apply. 1599 * @return String[] if found, String[0] is username, which can be null and 1600 * String[1] is password. Return null if it can't find anything. 1601 */ 1602 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1603 checkThread(); 1604 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1605 } 1606 1607 /** 1608 * Remove Find or Select ActionModes, if active. 1609 */ 1610 private void clearActionModes() { 1611 if (mSelectCallback != null) { 1612 mSelectCallback.finish(); 1613 } 1614 if (mFindCallback != null) { 1615 mFindCallback.finish(); 1616 } 1617 } 1618 1619 /** 1620 * Called to clear state when moving from one page to another, or changing 1621 * in some other way that makes elements associated with the current page 1622 * (such as WebTextView or ActionModes) no longer relevant. 1623 */ 1624 private void clearHelpers() { 1625 clearTextEntry(); 1626 clearActionModes(); 1627 dismissFullScreenMode(); 1628 } 1629 1630 /** 1631 * Destroy the internal state of the WebView. This method should be called 1632 * after the WebView has been removed from the view system. No other 1633 * methods may be called on a WebView after destroy. 1634 */ 1635 public void destroy() { 1636 checkThread(); 1637 destroyImpl(); 1638 } 1639 1640 private void destroyImpl() { 1641 clearHelpers(); 1642 if (mListBoxDialog != null) { 1643 mListBoxDialog.dismiss(); 1644 mListBoxDialog = null; 1645 } 1646 // remove so that it doesn't cause events 1647 if (mWebTextView != null) { 1648 mWebTextView.remove(); 1649 mWebTextView = null; 1650 } 1651 if (mNativeClass != 0) nativeStopGL(); 1652 if (mWebViewCore != null) { 1653 // Set the handlers to null before destroying WebViewCore so no 1654 // more messages will be posted. 1655 mCallbackProxy.setWebViewClient(null); 1656 mCallbackProxy.setWebChromeClient(null); 1657 // Tell WebViewCore to destroy itself 1658 synchronized (this) { 1659 WebViewCore webViewCore = mWebViewCore; 1660 mWebViewCore = null; // prevent using partial webViewCore 1661 webViewCore.destroy(); 1662 } 1663 // Remove any pending messages that might not be serviced yet. 1664 mPrivateHandler.removeCallbacksAndMessages(null); 1665 mCallbackProxy.removeCallbacksAndMessages(null); 1666 // Wake up the WebCore thread just in case it is waiting for a 1667 // JavaScript dialog. 1668 synchronized (mCallbackProxy) { 1669 mCallbackProxy.notify(); 1670 } 1671 } 1672 if (mNativeClass != 0) { 1673 nativeDestroy(); 1674 mNativeClass = 0; 1675 } 1676 } 1677 1678 /** 1679 * Enables platform notifications of data state and proxy changes. 1680 * Notifications are enabled by default. 1681 * 1682 * @deprecated This method is now obsolete. 1683 */ 1684 @Deprecated 1685 public static void enablePlatformNotifications() { 1686 checkThread(); 1687 synchronized (WebView.class) { 1688 Network.enablePlatformNotifications(); 1689 sNotificationsEnabled = true; 1690 Context context = JniUtil.getContext(); 1691 if (context != null) 1692 setupProxyListener(context); 1693 } 1694 } 1695 1696 /** 1697 * Disables platform notifications of data state and proxy changes. 1698 * Notifications are enabled by default. 1699 * 1700 * @deprecated This method is now obsolete. 1701 */ 1702 @Deprecated 1703 public static void disablePlatformNotifications() { 1704 checkThread(); 1705 synchronized (WebView.class) { 1706 Network.disablePlatformNotifications(); 1707 sNotificationsEnabled = false; 1708 Context context = JniUtil.getContext(); 1709 if (context != null) 1710 disableProxyListener(context); 1711 } 1712 } 1713 1714 /** 1715 * Sets JavaScript engine flags. 1716 * 1717 * @param flags JS engine flags in a String 1718 * 1719 * @hide pending API solidification 1720 */ 1721 public void setJsFlags(String flags) { 1722 checkThread(); 1723 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1724 } 1725 1726 /** 1727 * Inform WebView of the network state. This is used to set 1728 * the JavaScript property window.navigator.isOnline and 1729 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1730 * @param networkUp boolean indicating if network is available 1731 */ 1732 public void setNetworkAvailable(boolean networkUp) { 1733 checkThread(); 1734 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1735 networkUp ? 1 : 0, 0); 1736 } 1737 1738 /** 1739 * Inform WebView about the current network type. 1740 * {@hide} 1741 */ 1742 public void setNetworkType(String type, String subtype) { 1743 checkThread(); 1744 Map<String, String> map = new HashMap<String, String>(); 1745 map.put("type", type); 1746 map.put("subtype", subtype); 1747 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1748 } 1749 /** 1750 * Save the state of this WebView used in 1751 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1752 * method no longer stores the display data for this WebView. The previous 1753 * behavior could potentially leak files if {@link #restoreState} was never 1754 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1755 * and restoring the display data. 1756 * @param outState The Bundle to store the WebView state. 1757 * @return The same copy of the back/forward list used to save the state. If 1758 * saveState fails, the returned list will be null. 1759 * @see #savePicture 1760 * @see #restorePicture 1761 */ 1762 public WebBackForwardList saveState(Bundle outState) { 1763 checkThread(); 1764 if (outState == null) { 1765 return null; 1766 } 1767 // We grab a copy of the back/forward list because a client of WebView 1768 // may have invalidated the history list by calling clearHistory. 1769 WebBackForwardList list = copyBackForwardList(); 1770 final int currentIndex = list.getCurrentIndex(); 1771 final int size = list.getSize(); 1772 // We should fail saving the state if the list is empty or the index is 1773 // not in a valid range. 1774 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1775 return null; 1776 } 1777 outState.putInt("index", currentIndex); 1778 // FIXME: This should just be a byte[][] instead of ArrayList but 1779 // Parcel.java does not have the code to handle multi-dimensional 1780 // arrays. 1781 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1782 for (int i = 0; i < size; i++) { 1783 WebHistoryItem item = list.getItemAtIndex(i); 1784 if (null == item) { 1785 // FIXME: this shouldn't happen 1786 // need to determine how item got set to null 1787 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1788 return null; 1789 } 1790 byte[] data = item.getFlattenedData(); 1791 if (data == null) { 1792 // It would be very odd to not have any data for a given history 1793 // item. And we will fail to rebuild the history list without 1794 // flattened data. 1795 return null; 1796 } 1797 history.add(data); 1798 } 1799 outState.putSerializable("history", history); 1800 if (mCertificate != null) { 1801 outState.putBundle("certificate", 1802 SslCertificate.saveState(mCertificate)); 1803 } 1804 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1805 mZoomManager.saveZoomState(outState); 1806 return list; 1807 } 1808 1809 /** 1810 * Save the current display data to the Bundle given. Used in conjunction 1811 * with {@link #saveState}. 1812 * @param b A Bundle to store the display data. 1813 * @param dest The file to store the serialized picture data. Will be 1814 * overwritten with this WebView's picture data. 1815 * @return True if the picture was successfully saved. 1816 * @deprecated This method is now obsolete. 1817 */ 1818 @Deprecated 1819 public boolean savePicture(Bundle b, final File dest) { 1820 checkThread(); 1821 if (dest == null || b == null) { 1822 return false; 1823 } 1824 final Picture p = capturePicture(); 1825 // Use a temporary file while writing to ensure the destination file 1826 // contains valid data. 1827 final File temp = new File(dest.getPath() + ".writing"); 1828 new Thread(new Runnable() { 1829 public void run() { 1830 FileOutputStream out = null; 1831 try { 1832 out = new FileOutputStream(temp); 1833 p.writeToStream(out); 1834 // Writing the picture succeeded, rename the temporary file 1835 // to the destination. 1836 temp.renameTo(dest); 1837 } catch (Exception e) { 1838 // too late to do anything about it. 1839 } finally { 1840 if (out != null) { 1841 try { 1842 out.close(); 1843 } catch (Exception e) { 1844 // Can't do anything about that 1845 } 1846 } 1847 temp.delete(); 1848 } 1849 } 1850 }).start(); 1851 // now update the bundle 1852 b.putInt("scrollX", mScrollX); 1853 b.putInt("scrollY", mScrollY); 1854 mZoomManager.saveZoomState(b); 1855 return true; 1856 } 1857 1858 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1859 int sx = b.getInt("scrollX", 0); 1860 int sy = b.getInt("scrollY", 0); 1861 1862 mDrawHistory = true; 1863 mHistoryPicture = p; 1864 1865 mScrollX = sx; 1866 mScrollY = sy; 1867 mZoomManager.restoreZoomState(b); 1868 final float scale = mZoomManager.getScale(); 1869 mHistoryWidth = Math.round(p.getWidth() * scale); 1870 mHistoryHeight = Math.round(p.getHeight() * scale); 1871 1872 invalidate(); 1873 } 1874 1875 /** 1876 * Restore the display data that was save in {@link #savePicture}. Used in 1877 * conjunction with {@link #restoreState}. 1878 * 1879 * Note that this will not work if the WebView is hardware accelerated. 1880 * @param b A Bundle containing the saved display data. 1881 * @param src The file where the picture data was stored. 1882 * @return True if the picture was successfully restored. 1883 * @deprecated This method is now obsolete. 1884 */ 1885 @Deprecated 1886 public boolean restorePicture(Bundle b, File src) { 1887 checkThread(); 1888 if (src == null || b == null) { 1889 return false; 1890 } 1891 if (!src.exists()) { 1892 return false; 1893 } 1894 try { 1895 final FileInputStream in = new FileInputStream(src); 1896 final Bundle copy = new Bundle(b); 1897 new Thread(new Runnable() { 1898 public void run() { 1899 try { 1900 final Picture p = Picture.createFromStream(in); 1901 if (p != null) { 1902 // Post a runnable on the main thread to update the 1903 // history picture fields. 1904 mPrivateHandler.post(new Runnable() { 1905 public void run() { 1906 restoreHistoryPictureFields(p, copy); 1907 } 1908 }); 1909 } 1910 } finally { 1911 try { 1912 in.close(); 1913 } catch (Exception e) { 1914 // Nothing we can do now. 1915 } 1916 } 1917 } 1918 }).start(); 1919 } catch (FileNotFoundException e){ 1920 e.printStackTrace(); 1921 } 1922 return true; 1923 } 1924 1925 /** 1926 * Saves the view data to the output stream. The output is highly 1927 * version specific, and may not be able to be loaded by newer versions 1928 * of WebView. 1929 * @param stream The {@link OutputStream} to save to 1930 * @return True if saved successfully 1931 * @hide 1932 */ 1933 public boolean saveViewState(OutputStream stream) { 1934 try { 1935 return ViewStateSerializer.serializeViewState(stream, this); 1936 } catch (IOException e) { 1937 Log.w(LOGTAG, "Failed to saveViewState", e); 1938 } 1939 return false; 1940 } 1941 1942 /** 1943 * Loads the view data from the input stream. See 1944 * {@link #saveViewState(OutputStream)} for more information. 1945 * @param stream The {@link InputStream} to load from 1946 * @return True if loaded successfully 1947 * @hide 1948 */ 1949 public boolean loadViewState(InputStream stream) { 1950 try { 1951 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1952 mBlockWebkitViewMessages = true; 1953 setNewPicture(mLoadedPicture, true); 1954 mLoadedPicture.mViewState = null; 1955 return true; 1956 } catch (IOException e) { 1957 Log.w(LOGTAG, "Failed to loadViewState", e); 1958 } 1959 return false; 1960 } 1961 1962 /** 1963 * Clears the view state set with {@link #loadViewState(InputStream)}. 1964 * This WebView will then switch to showing the content from webkit 1965 * @hide 1966 */ 1967 public void clearViewState() { 1968 mBlockWebkitViewMessages = false; 1969 mLoadedPicture = null; 1970 invalidate(); 1971 } 1972 1973 /** 1974 * Restore the state of this WebView from the given map used in 1975 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1976 * be called to restore the state of the WebView before using the object. If 1977 * it is called after the WebView has had a chance to build state (load 1978 * pages, create a back/forward list, etc.) there may be undesirable 1979 * side-effects. Please note that this method no longer restores the 1980 * display data for this WebView. See {@link #savePicture} and {@link 1981 * #restorePicture} for saving and restoring the display data. 1982 * @param inState The incoming Bundle of state. 1983 * @return The restored back/forward list or null if restoreState failed. 1984 * @see #savePicture 1985 * @see #restorePicture 1986 */ 1987 public WebBackForwardList restoreState(Bundle inState) { 1988 checkThread(); 1989 WebBackForwardList returnList = null; 1990 if (inState == null) { 1991 return returnList; 1992 } 1993 if (inState.containsKey("index") && inState.containsKey("history")) { 1994 mCertificate = SslCertificate.restoreState( 1995 inState.getBundle("certificate")); 1996 1997 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1998 final int index = inState.getInt("index"); 1999 // We can't use a clone of the list because we need to modify the 2000 // shared copy, so synchronize instead to prevent concurrent 2001 // modifications. 2002 synchronized (list) { 2003 final List<byte[]> history = 2004 (List<byte[]>) inState.getSerializable("history"); 2005 final int size = history.size(); 2006 // Check the index bounds so we don't crash in native code while 2007 // restoring the history index. 2008 if (index < 0 || index >= size) { 2009 return null; 2010 } 2011 for (int i = 0; i < size; i++) { 2012 byte[] data = history.remove(0); 2013 if (data == null) { 2014 // If we somehow have null data, we cannot reconstruct 2015 // the item and thus our history list cannot be rebuilt. 2016 return null; 2017 } 2018 WebHistoryItem item = new WebHistoryItem(data); 2019 list.addHistoryItem(item); 2020 } 2021 // Grab the most recent copy to return to the caller. 2022 returnList = copyBackForwardList(); 2023 // Update the copy to have the correct index. 2024 returnList.setCurrentIndex(index); 2025 } 2026 // Restore private browsing setting. 2027 if (inState.getBoolean("privateBrowsingEnabled")) { 2028 getSettings().setPrivateBrowsingEnabled(true); 2029 } 2030 mZoomManager.restoreZoomState(inState); 2031 // Remove all pending messages because we are restoring previous 2032 // state. 2033 mWebViewCore.removeMessages(); 2034 // Send a restore state message. 2035 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2036 } 2037 return returnList; 2038 } 2039 2040 /** 2041 * Load the given URL with the specified additional HTTP headers. 2042 * @param url The URL of the resource to load. 2043 * @param additionalHttpHeaders The additional headers to be used in the 2044 * HTTP request for this URL, specified as a map from name to 2045 * value. Note that if this map contains any of the headers 2046 * that are set by default by the WebView, such as those 2047 * controlling caching, accept types or the User-Agent, their 2048 * values may be overriden by the WebView's defaults. 2049 */ 2050 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2051 checkThread(); 2052 loadUrlImpl(url, additionalHttpHeaders); 2053 } 2054 2055 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2056 switchOutDrawHistory(); 2057 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2058 arg.mUrl = url; 2059 arg.mExtraHeaders = extraHeaders; 2060 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2061 clearHelpers(); 2062 } 2063 2064 /** 2065 * Load the given URL. 2066 * @param url The URL of the resource to load. 2067 */ 2068 public void loadUrl(String url) { 2069 checkThread(); 2070 loadUrlImpl(url); 2071 } 2072 2073 private void loadUrlImpl(String url) { 2074 if (url == null) { 2075 return; 2076 } 2077 loadUrlImpl(url, null); 2078 } 2079 2080 /** 2081 * Load the url with postData using "POST" method into the WebView. If url 2082 * is not a network url, it will be loaded with {link 2083 * {@link #loadUrl(String)} instead. 2084 * 2085 * @param url The url of the resource to load. 2086 * @param postData The data will be passed to "POST" request. 2087 */ 2088 public void postUrl(String url, byte[] postData) { 2089 checkThread(); 2090 if (URLUtil.isNetworkUrl(url)) { 2091 switchOutDrawHistory(); 2092 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2093 arg.mUrl = url; 2094 arg.mPostData = postData; 2095 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2096 clearHelpers(); 2097 } else { 2098 loadUrlImpl(url); 2099 } 2100 } 2101 2102 /** 2103 * Load the given data into the WebView using a 'data' scheme URL. 2104 * <p> 2105 * Note that JavaScript's same origin policy means that script running in a 2106 * page loaded using this method will be unable to access content loaded 2107 * using any scheme other than 'data', including 'http(s)'. To avoid this 2108 * restriction, use {@link 2109 * #loadDataWithBaseURL(String,String,String,String,String) 2110 * loadDataWithBaseURL()} with an appropriate base URL. 2111 * <p> 2112 * If the value of the encoding parameter is 'base64', then the data must 2113 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2114 * octets inside the range of safe URL characters and use the standard %xx 2115 * hex encoding of URLs for octets outside that range. For example, 2116 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2117 * <p> 2118 * The 'data' scheme URL formed by this method uses the default US-ASCII 2119 * charset. If you need need to set a different charset, you should form a 2120 * 'data' scheme URL which explicitly specifies a charset parameter in the 2121 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2122 * Note that the charset obtained from the mediatype portion of a data URL 2123 * always overrides that specified in the HTML or XML document itself. 2124 * @param data A String of data in the given encoding. 2125 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2126 * @param encoding The encoding of the data. 2127 */ 2128 public void loadData(String data, String mimeType, String encoding) { 2129 checkThread(); 2130 loadDataImpl(data, mimeType, encoding); 2131 } 2132 2133 private void loadDataImpl(String data, String mimeType, String encoding) { 2134 StringBuilder dataUrl = new StringBuilder("data:"); 2135 dataUrl.append(mimeType); 2136 if ("base64".equals(encoding)) { 2137 dataUrl.append(";base64"); 2138 } 2139 dataUrl.append(","); 2140 dataUrl.append(data); 2141 loadUrlImpl(dataUrl.toString()); 2142 } 2143 2144 /** 2145 * Load the given data into the WebView, using baseUrl as the base URL for 2146 * the content. The base URL is used both to resolve relative URLs and when 2147 * applying JavaScript's same origin policy. The historyUrl is used for the 2148 * history entry. 2149 * <p> 2150 * Note that content specified in this way can access local device files 2151 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2152 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2153 * <p> 2154 * If the base URL uses the data scheme, this method is equivalent to 2155 * calling {@link #loadData(String,String,String) loadData()} and the 2156 * historyUrl is ignored. 2157 * @param baseUrl URL to use as the page's base URL. If null defaults to 2158 * 'about:blank' 2159 * @param data A String of data in the given encoding. 2160 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2161 * defaults to 'text/html'. 2162 * @param encoding The encoding of the data. 2163 * @param historyUrl URL to use as the history entry, if null defaults to 2164 * 'about:blank'. 2165 */ 2166 public void loadDataWithBaseURL(String baseUrl, String data, 2167 String mimeType, String encoding, String historyUrl) { 2168 checkThread(); 2169 2170 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2171 loadDataImpl(data, mimeType, encoding); 2172 return; 2173 } 2174 switchOutDrawHistory(); 2175 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2176 arg.mBaseUrl = baseUrl; 2177 arg.mData = data; 2178 arg.mMimeType = mimeType; 2179 arg.mEncoding = encoding; 2180 arg.mHistoryUrl = historyUrl; 2181 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2182 clearHelpers(); 2183 } 2184 2185 /** 2186 * Saves the current view as a web archive. 2187 * 2188 * @param filename The filename where the archive should be placed. 2189 */ 2190 public void saveWebArchive(String filename) { 2191 checkThread(); 2192 saveWebArchiveImpl(filename, false, null); 2193 } 2194 2195 /* package */ static class SaveWebArchiveMessage { 2196 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2197 mBasename = basename; 2198 mAutoname = autoname; 2199 mCallback = callback; 2200 } 2201 2202 /* package */ final String mBasename; 2203 /* package */ final boolean mAutoname; 2204 /* package */ final ValueCallback<String> mCallback; 2205 /* package */ String mResultFile; 2206 } 2207 2208 /** 2209 * Saves the current view as a web archive. 2210 * 2211 * @param basename The filename where the archive should be placed. 2212 * @param autoname If false, takes basename to be a file. If true, basename 2213 * is assumed to be a directory in which a filename will be 2214 * chosen according to the url of the current page. 2215 * @param callback Called after the web archive has been saved. The 2216 * parameter for onReceiveValue will either be the filename 2217 * under which the file was saved, or null if saving the 2218 * file failed. 2219 */ 2220 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2221 checkThread(); 2222 saveWebArchiveImpl(basename, autoname, callback); 2223 } 2224 2225 private void saveWebArchiveImpl(String basename, boolean autoname, 2226 ValueCallback<String> callback) { 2227 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2228 new SaveWebArchiveMessage(basename, autoname, callback)); 2229 } 2230 2231 /** 2232 * Stop the current load. 2233 */ 2234 public void stopLoading() { 2235 checkThread(); 2236 // TODO: should we clear all the messages in the queue before sending 2237 // STOP_LOADING? 2238 switchOutDrawHistory(); 2239 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2240 } 2241 2242 /** 2243 * Reload the current url. 2244 */ 2245 public void reload() { 2246 checkThread(); 2247 clearHelpers(); 2248 switchOutDrawHistory(); 2249 mWebViewCore.sendMessage(EventHub.RELOAD); 2250 } 2251 2252 /** 2253 * Return true if this WebView has a back history item. 2254 * @return True iff this WebView has a back history item. 2255 */ 2256 public boolean canGoBack() { 2257 checkThread(); 2258 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2259 synchronized (l) { 2260 if (l.getClearPending()) { 2261 return false; 2262 } else { 2263 return l.getCurrentIndex() > 0; 2264 } 2265 } 2266 } 2267 2268 /** 2269 * Go back in the history of this WebView. 2270 */ 2271 public void goBack() { 2272 checkThread(); 2273 goBackOrForwardImpl(-1); 2274 } 2275 2276 /** 2277 * Return true if this WebView has a forward history item. 2278 * @return True iff this Webview has a forward history item. 2279 */ 2280 public boolean canGoForward() { 2281 checkThread(); 2282 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2283 synchronized (l) { 2284 if (l.getClearPending()) { 2285 return false; 2286 } else { 2287 return l.getCurrentIndex() < l.getSize() - 1; 2288 } 2289 } 2290 } 2291 2292 /** 2293 * Go forward in the history of this WebView. 2294 */ 2295 public void goForward() { 2296 checkThread(); 2297 goBackOrForwardImpl(1); 2298 } 2299 2300 /** 2301 * Return true if the page can go back or forward the given 2302 * number of steps. 2303 * @param steps The negative or positive number of steps to move the 2304 * history. 2305 */ 2306 public boolean canGoBackOrForward(int steps) { 2307 checkThread(); 2308 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2309 synchronized (l) { 2310 if (l.getClearPending()) { 2311 return false; 2312 } else { 2313 int newIndex = l.getCurrentIndex() + steps; 2314 return newIndex >= 0 && newIndex < l.getSize(); 2315 } 2316 } 2317 } 2318 2319 /** 2320 * Go to the history item that is the number of steps away from 2321 * the current item. Steps is negative if backward and positive 2322 * if forward. 2323 * @param steps The number of steps to take back or forward in the back 2324 * forward list. 2325 */ 2326 public void goBackOrForward(int steps) { 2327 checkThread(); 2328 goBackOrForwardImpl(steps); 2329 } 2330 2331 private void goBackOrForwardImpl(int steps) { 2332 goBackOrForward(steps, false); 2333 } 2334 2335 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2336 if (steps != 0) { 2337 clearHelpers(); 2338 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2339 ignoreSnapshot ? 1 : 0); 2340 } 2341 } 2342 2343 /** 2344 * Returns true if private browsing is enabled in this WebView. 2345 */ 2346 public boolean isPrivateBrowsingEnabled() { 2347 checkThread(); 2348 return getSettings().isPrivateBrowsingEnabled(); 2349 } 2350 2351 private void startPrivateBrowsing() { 2352 getSettings().setPrivateBrowsingEnabled(true); 2353 } 2354 2355 private boolean extendScroll(int y) { 2356 int finalY = mScroller.getFinalY(); 2357 int newY = pinLocY(finalY + y); 2358 if (newY == finalY) return false; 2359 mScroller.setFinalY(newY); 2360 mScroller.extendDuration(computeDuration(0, y)); 2361 return true; 2362 } 2363 2364 /** 2365 * Scroll the contents of the view up by half the view size 2366 * @param top true to jump to the top of the page 2367 * @return true if the page was scrolled 2368 */ 2369 public boolean pageUp(boolean top) { 2370 checkThread(); 2371 if (mNativeClass == 0) { 2372 return false; 2373 } 2374 nativeClearCursor(); // start next trackball movement from page edge 2375 if (top) { 2376 // go to the top of the document 2377 return pinScrollTo(mScrollX, 0, true, 0); 2378 } 2379 // Page up 2380 int h = getHeight(); 2381 int y; 2382 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2383 y = -h + PAGE_SCROLL_OVERLAP; 2384 } else { 2385 y = -h / 2; 2386 } 2387 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2388 : extendScroll(y); 2389 } 2390 2391 /** 2392 * Scroll the contents of the view down by half the page size 2393 * @param bottom true to jump to bottom of page 2394 * @return true if the page was scrolled 2395 */ 2396 public boolean pageDown(boolean bottom) { 2397 checkThread(); 2398 if (mNativeClass == 0) { 2399 return false; 2400 } 2401 nativeClearCursor(); // start next trackball movement from page edge 2402 if (bottom) { 2403 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2404 } 2405 // Page down. 2406 int h = getHeight(); 2407 int y; 2408 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2409 y = h - PAGE_SCROLL_OVERLAP; 2410 } else { 2411 y = h / 2; 2412 } 2413 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2414 : extendScroll(y); 2415 } 2416 2417 /** 2418 * Clear the view so that onDraw() will draw nothing but white background, 2419 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2420 */ 2421 public void clearView() { 2422 checkThread(); 2423 mContentWidth = 0; 2424 mContentHeight = 0; 2425 setBaseLayer(0, null, false, false, false); 2426 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2427 } 2428 2429 /** 2430 * Return a new picture that captures the current display of the webview. 2431 * This is a copy of the display, and will be unaffected if the webview 2432 * later loads a different URL. 2433 * 2434 * @return a picture containing the current contents of the view. Note this 2435 * picture is of the entire document, and is not restricted to the 2436 * bounds of the view. 2437 */ 2438 public Picture capturePicture() { 2439 checkThread(); 2440 if (mNativeClass == 0) return null; 2441 Picture result = new Picture(); 2442 nativeCopyBaseContentToPicture(result); 2443 return result; 2444 } 2445 2446 /** 2447 * Return true if the browser is displaying a TextView for text input. 2448 */ 2449 private boolean inEditingMode() { 2450 return mWebTextView != null && mWebTextView.getParent() != null; 2451 } 2452 2453 /** 2454 * Remove the WebTextView. 2455 */ 2456 private void clearTextEntry() { 2457 if (inEditingMode()) { 2458 mWebTextView.remove(); 2459 } else { 2460 // The keyboard may be open with the WebView as the served view 2461 hideSoftKeyboard(); 2462 } 2463 } 2464 2465 /** 2466 * Return the current scale of the WebView 2467 * @return The current scale. 2468 */ 2469 public float getScale() { 2470 checkThread(); 2471 return mZoomManager.getScale(); 2472 } 2473 2474 // Called by JNI. Returns the scale to apply to the text selection handles 2475 /* package */ float getTextHandleScale() { 2476 float density = mContext.getResources().getDisplayMetrics().density; 2477 return density / getScale(); 2478 } 2479 2480 /** 2481 * Return the reading level scale of the WebView 2482 * @return The reading level scale. 2483 */ 2484 /*package*/ float getReadingLevelScale() { 2485 return mZoomManager.getReadingLevelScale(); 2486 } 2487 2488 /** 2489 * Set the initial scale for the WebView. 0 means default. If 2490 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2491 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2492 * WebView starts with this value as initial scale. 2493 * Please note that unlike the scale properties in the viewport meta tag, 2494 * this method doesn't take the screen density into account. 2495 * 2496 * @param scaleInPercent The initial scale in percent. 2497 */ 2498 public void setInitialScale(int scaleInPercent) { 2499 checkThread(); 2500 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2501 } 2502 2503 /** 2504 * Invoke the graphical zoom picker widget for this WebView. This will 2505 * result in the zoom widget appearing on the screen to control the zoom 2506 * level of this WebView. 2507 */ 2508 public void invokeZoomPicker() { 2509 checkThread(); 2510 if (!getSettings().supportZoom()) { 2511 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2512 return; 2513 } 2514 clearHelpers(); 2515 mZoomManager.invokeZoomPicker(); 2516 } 2517 2518 /** 2519 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2520 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2521 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2522 * anchor does not have a url or if it is a JavaScript url, the type will 2523 * be UNKNOWN_TYPE and the url has to be retrieved through 2524 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2525 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2526 * the "extra" field. A type of 2527 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2528 * a child node. If a phone number is found, the HitTestResult type is set 2529 * to PHONE_TYPE and the phone number is set in the "extra" field of 2530 * HitTestResult. If a map address is found, the HitTestResult type is set 2531 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2532 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2533 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2534 * HitTestResult type is set to UNKNOWN_TYPE. 2535 */ 2536 public HitTestResult getHitTestResult() { 2537 checkThread(); 2538 return hitTestResult(mInitialHitTestResult); 2539 } 2540 2541 private HitTestResult hitTestResult(HitTestResult fallback) { 2542 if (mNativeClass == 0) { 2543 return null; 2544 } 2545 2546 HitTestResult result = new HitTestResult(); 2547 if (nativeHasCursorNode()) { 2548 if (nativeCursorIsTextInput()) { 2549 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2550 } else { 2551 String text = nativeCursorText(); 2552 if (text != null) { 2553 if (text.startsWith(SCHEME_TEL)) { 2554 result.setType(HitTestResult.PHONE_TYPE); 2555 result.setExtra(text.substring(SCHEME_TEL.length())); 2556 } else if (text.startsWith(SCHEME_MAILTO)) { 2557 result.setType(HitTestResult.EMAIL_TYPE); 2558 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2559 } else if (text.startsWith(SCHEME_GEO)) { 2560 result.setType(HitTestResult.GEO_TYPE); 2561 result.setExtra(URLDecoder.decode(text 2562 .substring(SCHEME_GEO.length()))); 2563 } else if (nativeCursorIsAnchor()) { 2564 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2565 result.setExtra(text); 2566 } 2567 } 2568 } 2569 } else if (fallback != null) { 2570 /* If webkit causes a rebuild while the long press is in progress, 2571 * the cursor node may be reset, even if it is still around. This 2572 * uses the cursor node saved when the touch began. Since the 2573 * nativeImageURI below only changes the result if it is successful, 2574 * this uses the data beneath the touch if available or the original 2575 * tap data otherwise. 2576 */ 2577 Log.v(LOGTAG, "hitTestResult use fallback"); 2578 result = fallback; 2579 } 2580 int type = result.getType(); 2581 if (type == HitTestResult.UNKNOWN_TYPE 2582 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2583 // Now check to see if it is an image. 2584 int contentX = viewToContentX(mLastTouchX + mScrollX); 2585 int contentY = viewToContentY(mLastTouchY + mScrollY); 2586 String text = nativeImageURI(contentX, contentY); 2587 if (text != null) { 2588 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2589 HitTestResult.IMAGE_TYPE : 2590 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2591 result.setExtra(text); 2592 } 2593 } 2594 return result; 2595 } 2596 2597 // Called by JNI when the DOM has changed the focus. Clear the focus so 2598 // that new keys will go to the newly focused field 2599 private void domChangedFocus() { 2600 if (inEditingMode()) { 2601 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2602 } 2603 } 2604 /** 2605 * Request the anchor or image element URL at the last tapped point. 2606 * If hrefMsg is null, this method returns immediately and does not 2607 * dispatch hrefMsg to its target. If the tapped point hits an image, 2608 * an anchor, or an image in an anchor, the message associates 2609 * strings in named keys in its data. The value paired with the key 2610 * may be an empty string. 2611 * 2612 * @param hrefMsg This message will be dispatched with the result of the 2613 * request. The message data contains three keys: 2614 * - "url" returns the anchor's href attribute. 2615 * - "title" returns the anchor's text. 2616 * - "src" returns the image's src attribute. 2617 */ 2618 public void requestFocusNodeHref(Message hrefMsg) { 2619 checkThread(); 2620 if (hrefMsg == null) { 2621 return; 2622 } 2623 int contentX = viewToContentX(mLastTouchX + mScrollX); 2624 int contentY = viewToContentY(mLastTouchY + mScrollY); 2625 if (nativeHasCursorNode()) { 2626 Rect cursorBounds = nativeGetCursorRingBounds(); 2627 if (!cursorBounds.contains(contentX, contentY)) { 2628 int slop = viewToContentDimension(mNavSlop); 2629 cursorBounds.inset(-slop, -slop); 2630 if (cursorBounds.contains(contentX, contentY)) { 2631 contentX = (int) cursorBounds.centerX(); 2632 contentY = (int) cursorBounds.centerY(); 2633 } 2634 } 2635 } 2636 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2637 contentX, contentY, hrefMsg); 2638 } 2639 2640 /** 2641 * Request the url of the image last touched by the user. msg will be sent 2642 * to its target with a String representing the url as its object. 2643 * 2644 * @param msg This message will be dispatched with the result of the request 2645 * as the data member with "url" as key. The result can be null. 2646 */ 2647 public void requestImageRef(Message msg) { 2648 checkThread(); 2649 if (0 == mNativeClass) return; // client isn't initialized 2650 int contentX = viewToContentX(mLastTouchX + mScrollX); 2651 int contentY = viewToContentY(mLastTouchY + mScrollY); 2652 String ref = nativeImageURI(contentX, contentY); 2653 Bundle data = msg.getData(); 2654 data.putString("url", ref); 2655 msg.setData(data); 2656 msg.sendToTarget(); 2657 } 2658 2659 static int pinLoc(int x, int viewMax, int docMax) { 2660// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2661 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2662 // pin the short document to the top/left of the screen 2663 x = 0; 2664// Log.d(LOGTAG, "--- center " + x); 2665 } else if (x < 0) { 2666 x = 0; 2667// Log.d(LOGTAG, "--- zero"); 2668 } else if (x + viewMax > docMax) { 2669 x = docMax - viewMax; 2670// Log.d(LOGTAG, "--- pin " + x); 2671 } 2672 return x; 2673 } 2674 2675 // Expects x in view coordinates 2676 int pinLocX(int x) { 2677 if (mInOverScrollMode) return x; 2678 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2679 } 2680 2681 // Expects y in view coordinates 2682 int pinLocY(int y) { 2683 if (mInOverScrollMode) return y; 2684 return pinLoc(y, getViewHeightWithTitle(), 2685 computeRealVerticalScrollRange() + getTitleHeight()); 2686 } 2687 2688 /** 2689 * A title bar which is embedded in this WebView, and scrolls along with it 2690 * vertically, but not horizontally. 2691 */ 2692 private View mTitleBar; 2693 2694 /** 2695 * the title bar rendering gravity 2696 */ 2697 private int mTitleGravity; 2698 2699 /** 2700 * Add or remove a title bar to be embedded into the WebView, and scroll 2701 * along with it vertically, while remaining in view horizontally. Pass 2702 * null to remove the title bar from the WebView, and return to drawing 2703 * the WebView normally without translating to account for the title bar. 2704 * @hide 2705 */ 2706 public void setEmbeddedTitleBar(View v) { 2707 if (mTitleBar == v) return; 2708 if (mTitleBar != null) { 2709 removeView(mTitleBar); 2710 } 2711 if (null != v) { 2712 addView(v, new AbsoluteLayout.LayoutParams( 2713 ViewGroup.LayoutParams.MATCH_PARENT, 2714 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2715 } 2716 mTitleBar = v; 2717 } 2718 2719 /** 2720 * Set where to render the embedded title bar 2721 * NO_GRAVITY at the top of the page 2722 * TOP at the top of the screen 2723 * @hide 2724 */ 2725 public void setTitleBarGravity(int gravity) { 2726 mTitleGravity = gravity; 2727 // force refresh 2728 invalidate(); 2729 } 2730 2731 /** 2732 * Given a distance in view space, convert it to content space. Note: this 2733 * does not reflect translation, just scaling, so this should not be called 2734 * with coordinates, but should be called for dimensions like width or 2735 * height. 2736 */ 2737 private int viewToContentDimension(int d) { 2738 return Math.round(d * mZoomManager.getInvScale()); 2739 } 2740 2741 /** 2742 * Given an x coordinate in view space, convert it to content space. Also 2743 * may be used for absolute heights (such as for the WebTextView's 2744 * textSize, which is unaffected by the height of the title bar). 2745 */ 2746 /*package*/ int viewToContentX(int x) { 2747 return viewToContentDimension(x); 2748 } 2749 2750 /** 2751 * Given a y coordinate in view space, convert it to content space. 2752 * Takes into account the height of the title bar if there is one 2753 * embedded into the WebView. 2754 */ 2755 /*package*/ int viewToContentY(int y) { 2756 return viewToContentDimension(y - getTitleHeight()); 2757 } 2758 2759 /** 2760 * Given a x coordinate in view space, convert it to content space. 2761 * Returns the result as a float. 2762 */ 2763 private float viewToContentXf(int x) { 2764 return x * mZoomManager.getInvScale(); 2765 } 2766 2767 /** 2768 * Given a y coordinate in view space, convert it to content space. 2769 * Takes into account the height of the title bar if there is one 2770 * embedded into the WebView. Returns the result as a float. 2771 */ 2772 private float viewToContentYf(int y) { 2773 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2774 } 2775 2776 /** 2777 * Given a distance in content space, convert it to view space. Note: this 2778 * does not reflect translation, just scaling, so this should not be called 2779 * with coordinates, but should be called for dimensions like width or 2780 * height. 2781 */ 2782 /*package*/ int contentToViewDimension(int d) { 2783 return Math.round(d * mZoomManager.getScale()); 2784 } 2785 2786 /** 2787 * Given an x coordinate in content space, convert it to view 2788 * space. 2789 */ 2790 /*package*/ int contentToViewX(int x) { 2791 return contentToViewDimension(x); 2792 } 2793 2794 /** 2795 * Given a y coordinate in content space, convert it to view 2796 * space. Takes into account the height of the title bar. 2797 */ 2798 /*package*/ int contentToViewY(int y) { 2799 return contentToViewDimension(y) + getTitleHeight(); 2800 } 2801 2802 private Rect contentToViewRect(Rect x) { 2803 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2804 contentToViewX(x.right), contentToViewY(x.bottom)); 2805 } 2806 2807 /* To invalidate a rectangle in content coordinates, we need to transform 2808 the rect into view coordinates, so we can then call invalidate(...). 2809 2810 Normally, we would just call contentToView[XY](...), which eventually 2811 calls Math.round(coordinate * mActualScale). However, for invalidates, 2812 we need to account for the slop that occurs with antialiasing. To 2813 address that, we are a little more liberal in the size of the rect that 2814 we invalidate. 2815 2816 This liberal calculation calls floor() for the top/left, and ceil() for 2817 the bottom/right coordinates. This catches the possible extra pixels of 2818 antialiasing that we might have missed with just round(). 2819 */ 2820 2821 // Called by JNI to invalidate the View, given rectangle coordinates in 2822 // content space 2823 private void viewInvalidate(int l, int t, int r, int b) { 2824 final float scale = mZoomManager.getScale(); 2825 final int dy = getTitleHeight(); 2826 invalidate((int)Math.floor(l * scale), 2827 (int)Math.floor(t * scale) + dy, 2828 (int)Math.ceil(r * scale), 2829 (int)Math.ceil(b * scale) + dy); 2830 } 2831 2832 // Called by JNI to invalidate the View after a delay, given rectangle 2833 // coordinates in content space 2834 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2835 final float scale = mZoomManager.getScale(); 2836 final int dy = getTitleHeight(); 2837 postInvalidateDelayed(delay, 2838 (int)Math.floor(l * scale), 2839 (int)Math.floor(t * scale) + dy, 2840 (int)Math.ceil(r * scale), 2841 (int)Math.ceil(b * scale) + dy); 2842 } 2843 2844 private void invalidateContentRect(Rect r) { 2845 viewInvalidate(r.left, r.top, r.right, r.bottom); 2846 } 2847 2848 // stop the scroll animation, and don't let a subsequent fling add 2849 // to the existing velocity 2850 private void abortAnimation() { 2851 mScroller.abortAnimation(); 2852 mLastVelocity = 0; 2853 } 2854 2855 /* call from webcoreview.draw(), so we're still executing in the UI thread 2856 */ 2857 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2858 2859 // premature data from webkit, ignore 2860 if ((w | h) == 0) { 2861 return; 2862 } 2863 2864 // don't abort a scroll animation if we didn't change anything 2865 if (mContentWidth != w || mContentHeight != h) { 2866 // record new dimensions 2867 mContentWidth = w; 2868 mContentHeight = h; 2869 // If history Picture is drawn, don't update scroll. They will be 2870 // updated when we get out of that mode. 2871 if (!mDrawHistory) { 2872 // repin our scroll, taking into account the new content size 2873 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2874 if (!mScroller.isFinished()) { 2875 // We are in the middle of a scroll. Repin the final scroll 2876 // position. 2877 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2878 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2879 } 2880 } 2881 } 2882 contentSizeChanged(updateLayout); 2883 } 2884 2885 // Used to avoid sending many visible rect messages. 2886 private Rect mLastVisibleRectSent = new Rect(); 2887 private Rect mLastGlobalRect = new Rect(); 2888 private Rect mVisibleRect = new Rect(); 2889 private Rect mGlobalVisibleRect = new Rect(); 2890 private Point mScrollOffset = new Point(); 2891 2892 Rect sendOurVisibleRect() { 2893 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2894 calcOurContentVisibleRect(mVisibleRect); 2895 // Rect.equals() checks for null input. 2896 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 2897 if (!mBlockWebkitViewMessages) { 2898 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 2899 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2900 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2901 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 2902 } 2903 mLastVisibleRectSent.set(mVisibleRect); 2904 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2905 } 2906 if (getGlobalVisibleRect(mGlobalVisibleRect) 2907 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 2908 if (DebugFlags.WEB_VIEW) { 2909 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 2910 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 2911 + mGlobalVisibleRect.bottom); 2912 } 2913 // TODO: the global offset is only used by windowRect() 2914 // in ChromeClientAndroid ; other clients such as touch 2915 // and mouse events could return view + screen relative points. 2916 if (!mBlockWebkitViewMessages) { 2917 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 2918 } 2919 mLastGlobalRect.set(mGlobalVisibleRect); 2920 } 2921 return mVisibleRect; 2922 } 2923 2924 private Point mGlobalVisibleOffset = new Point(); 2925 // Sets r to be the visible rectangle of our webview in view coordinates 2926 private void calcOurVisibleRect(Rect r) { 2927 getGlobalVisibleRect(r, mGlobalVisibleOffset); 2928 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 2929 } 2930 2931 // Sets r to be our visible rectangle in content coordinates 2932 private void calcOurContentVisibleRect(Rect r) { 2933 calcOurVisibleRect(r); 2934 r.left = viewToContentX(r.left); 2935 // viewToContentY will remove the total height of the title bar. Add 2936 // the visible height back in to account for the fact that if the title 2937 // bar is partially visible, the part of the visible rect which is 2938 // displaying our content is displaced by that amount. 2939 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2940 r.right = viewToContentX(r.right); 2941 r.bottom = viewToContentY(r.bottom); 2942 } 2943 2944 private Rect mContentVisibleRect = new Rect(); 2945 // Sets r to be our visible rectangle in content coordinates. We use this 2946 // method on the native side to compute the position of the fixed layers. 2947 // Uses floating coordinates (necessary to correctly place elements when 2948 // the scale factor is not 1) 2949 private void calcOurContentVisibleRectF(RectF r) { 2950 calcOurVisibleRect(mContentVisibleRect); 2951 r.left = viewToContentXf(mContentVisibleRect.left); 2952 // viewToContentY will remove the total height of the title bar. Add 2953 // the visible height back in to account for the fact that if the title 2954 // bar is partially visible, the part of the visible rect which is 2955 // displaying our content is displaced by that amount. 2956 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 2957 r.right = viewToContentXf(mContentVisibleRect.right); 2958 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 2959 } 2960 2961 static class ViewSizeData { 2962 int mWidth; 2963 int mHeight; 2964 float mHeightWidthRatio; 2965 int mActualViewHeight; 2966 int mTextWrapWidth; 2967 int mAnchorX; 2968 int mAnchorY; 2969 float mScale; 2970 boolean mIgnoreHeight; 2971 } 2972 2973 /** 2974 * Compute unzoomed width and height, and if they differ from the last 2975 * values we sent, send them to webkit (to be used as new viewport) 2976 * 2977 * @param force ensures that the message is sent to webkit even if the width 2978 * or height has not changed since the last message 2979 * 2980 * @return true if new values were sent 2981 */ 2982 boolean sendViewSizeZoom(boolean force) { 2983 if (mBlockWebkitViewMessages) return false; 2984 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2985 2986 int viewWidth = getViewWidth(); 2987 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2988 // This height could be fixed and be different from actual visible height. 2989 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2990 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2991 // Make the ratio more accurate than (newHeight / newWidth), since the 2992 // latter both are calculated and rounded. 2993 float heightWidthRatio = (float) viewHeight / viewWidth; 2994 /* 2995 * Because the native side may have already done a layout before the 2996 * View system was able to measure us, we have to send a height of 0 to 2997 * remove excess whitespace when we grow our width. This will trigger a 2998 * layout and a change in content size. This content size change will 2999 * mean that contentSizeChanged will either call this method directly or 3000 * indirectly from onSizeChanged. 3001 */ 3002 if (newWidth > mLastWidthSent && mWrapContent) { 3003 newHeight = 0; 3004 heightWidthRatio = 0; 3005 } 3006 // Actual visible content height. 3007 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3008 // Avoid sending another message if the dimensions have not changed. 3009 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3010 actualViewHeight != mLastActualHeightSent) { 3011 ViewSizeData data = new ViewSizeData(); 3012 data.mWidth = newWidth; 3013 data.mHeight = newHeight; 3014 data.mHeightWidthRatio = heightWidthRatio; 3015 data.mActualViewHeight = actualViewHeight; 3016 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3017 data.mScale = mZoomManager.getScale(); 3018 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3019 && !mHeightCanMeasure; 3020 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3021 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3022 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3023 mLastWidthSent = newWidth; 3024 mLastHeightSent = newHeight; 3025 mLastActualHeightSent = actualViewHeight; 3026 mZoomManager.clearDocumentAnchor(); 3027 return true; 3028 } 3029 return false; 3030 } 3031 3032 /** 3033 * Update the double-tap zoom. 3034 */ 3035 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3036 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3037 } 3038 3039 private int computeRealHorizontalScrollRange() { 3040 if (mDrawHistory) { 3041 return mHistoryWidth; 3042 } else { 3043 // to avoid rounding error caused unnecessary scrollbar, use floor 3044 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3045 } 3046 } 3047 3048 @Override 3049 protected int computeHorizontalScrollRange() { 3050 int range = computeRealHorizontalScrollRange(); 3051 3052 // Adjust reported range if overscrolled to compress the scroll bars 3053 final int scrollX = mScrollX; 3054 final int overscrollRight = computeMaxScrollX(); 3055 if (scrollX < 0) { 3056 range -= scrollX; 3057 } else if (scrollX > overscrollRight) { 3058 range += scrollX - overscrollRight; 3059 } 3060 3061 return range; 3062 } 3063 3064 @Override 3065 protected int computeHorizontalScrollOffset() { 3066 return Math.max(mScrollX, 0); 3067 } 3068 3069 private int computeRealVerticalScrollRange() { 3070 if (mDrawHistory) { 3071 return mHistoryHeight; 3072 } else { 3073 // to avoid rounding error caused unnecessary scrollbar, use floor 3074 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3075 } 3076 } 3077 3078 @Override 3079 protected int computeVerticalScrollRange() { 3080 int range = computeRealVerticalScrollRange(); 3081 3082 // Adjust reported range if overscrolled to compress the scroll bars 3083 final int scrollY = mScrollY; 3084 final int overscrollBottom = computeMaxScrollY(); 3085 if (scrollY < 0) { 3086 range -= scrollY; 3087 } else if (scrollY > overscrollBottom) { 3088 range += scrollY - overscrollBottom; 3089 } 3090 3091 return range; 3092 } 3093 3094 @Override 3095 protected int computeVerticalScrollOffset() { 3096 return Math.max(mScrollY - getTitleHeight(), 0); 3097 } 3098 3099 @Override 3100 protected int computeVerticalScrollExtent() { 3101 return getViewHeight(); 3102 } 3103 3104 /** @hide */ 3105 @Override 3106 protected void onDrawVerticalScrollBar(Canvas canvas, 3107 Drawable scrollBar, 3108 int l, int t, int r, int b) { 3109 if (mScrollY < 0) { 3110 t -= mScrollY; 3111 } 3112 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3113 scrollBar.draw(canvas); 3114 } 3115 3116 @Override 3117 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3118 boolean clampedY) { 3119 // Special-case layer scrolling so that we do not trigger normal scroll 3120 // updating. 3121 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3122 scrollLayerTo(scrollX, scrollY); 3123 return; 3124 } 3125 mInOverScrollMode = false; 3126 int maxX = computeMaxScrollX(); 3127 int maxY = computeMaxScrollY(); 3128 if (maxX == 0) { 3129 // do not over scroll x if the page just fits the screen 3130 scrollX = pinLocX(scrollX); 3131 } else if (scrollX < 0 || scrollX > maxX) { 3132 mInOverScrollMode = true; 3133 } 3134 if (scrollY < 0 || scrollY > maxY) { 3135 mInOverScrollMode = true; 3136 } 3137 3138 int oldX = mScrollX; 3139 int oldY = mScrollY; 3140 3141 super.scrollTo(scrollX, scrollY); 3142 3143 if (mOverScrollGlow != null) { 3144 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3145 } 3146 } 3147 3148 /** 3149 * Get the url for the current page. This is not always the same as the url 3150 * passed to WebViewClient.onPageStarted because although the load for 3151 * that url has begun, the current page may not have changed. 3152 * @return The url for the current page. 3153 */ 3154 public String getUrl() { 3155 checkThread(); 3156 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3157 return h != null ? h.getUrl() : null; 3158 } 3159 3160 /** 3161 * Get the original url for the current page. This is not always the same 3162 * as the url passed to WebViewClient.onPageStarted because although the 3163 * load for that url has begun, the current page may not have changed. 3164 * Also, there may have been redirects resulting in a different url to that 3165 * originally requested. 3166 * @return The url that was originally requested for the current page. 3167 */ 3168 public String getOriginalUrl() { 3169 checkThread(); 3170 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3171 return h != null ? h.getOriginalUrl() : null; 3172 } 3173 3174 /** 3175 * Get the title for the current page. This is the title of the current page 3176 * until WebViewClient.onReceivedTitle is called. 3177 * @return The title for the current page. 3178 */ 3179 public String getTitle() { 3180 checkThread(); 3181 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3182 return h != null ? h.getTitle() : null; 3183 } 3184 3185 /** 3186 * Get the favicon for the current page. This is the favicon of the current 3187 * page until WebViewClient.onReceivedIcon is called. 3188 * @return The favicon for the current page. 3189 */ 3190 public Bitmap getFavicon() { 3191 checkThread(); 3192 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3193 return h != null ? h.getFavicon() : null; 3194 } 3195 3196 /** 3197 * Get the touch icon url for the apple-touch-icon <link> element, or 3198 * a URL on this site's server pointing to the standard location of a 3199 * touch icon. 3200 * @hide 3201 */ 3202 public String getTouchIconUrl() { 3203 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3204 return h != null ? h.getTouchIconUrl() : null; 3205 } 3206 3207 /** 3208 * Get the progress for the current page. 3209 * @return The progress for the current page between 0 and 100. 3210 */ 3211 public int getProgress() { 3212 checkThread(); 3213 return mCallbackProxy.getProgress(); 3214 } 3215 3216 /** 3217 * @return the height of the HTML content. 3218 */ 3219 public int getContentHeight() { 3220 checkThread(); 3221 return mContentHeight; 3222 } 3223 3224 /** 3225 * @return the width of the HTML content. 3226 * @hide 3227 */ 3228 public int getContentWidth() { 3229 return mContentWidth; 3230 } 3231 3232 /** 3233 * @hide 3234 */ 3235 public int getPageBackgroundColor() { 3236 return nativeGetBackgroundColor(); 3237 } 3238 3239 /** 3240 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3241 * is a global requests, not restricted to just this webview. This can be 3242 * useful if the application has been paused. 3243 */ 3244 public void pauseTimers() { 3245 checkThread(); 3246 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3247 } 3248 3249 /** 3250 * Resume all layout, parsing, and JavaScript timers for all webviews. 3251 * This will resume dispatching all timers. 3252 */ 3253 public void resumeTimers() { 3254 checkThread(); 3255 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3256 } 3257 3258 /** 3259 * Call this to pause any extra processing associated with this WebView and 3260 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3261 * is taken offscreen, this could be called to reduce unnecessary CPU or 3262 * network traffic. When the WebView is again "active", call onResume(). 3263 * 3264 * Note that this differs from pauseTimers(), which affects all WebViews. 3265 */ 3266 public void onPause() { 3267 checkThread(); 3268 if (!mIsPaused) { 3269 mIsPaused = true; 3270 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3271 // We want to pause the current playing video when switching out 3272 // from the current WebView/tab. 3273 if (mHTML5VideoViewProxy != null) { 3274 mHTML5VideoViewProxy.pauseAndDispatch(); 3275 } 3276 if (mNativeClass != 0) { 3277 nativeSetPauseDrawing(mNativeClass, true); 3278 } 3279 } 3280 } 3281 3282 @Override 3283 protected void onWindowVisibilityChanged(int visibility) { 3284 super.onWindowVisibilityChanged(visibility); 3285 updateDrawingState(); 3286 } 3287 3288 void updateDrawingState() { 3289 if (mNativeClass == 0 || mIsPaused) return; 3290 if (getWindowVisibility() != VISIBLE) { 3291 nativeSetPauseDrawing(mNativeClass, true); 3292 } else if (getVisibility() != VISIBLE) { 3293 nativeSetPauseDrawing(mNativeClass, true); 3294 } else { 3295 nativeSetPauseDrawing(mNativeClass, false); 3296 } 3297 } 3298 3299 /** 3300 * Call this to resume a WebView after a previous call to onPause(). 3301 */ 3302 public void onResume() { 3303 checkThread(); 3304 if (mIsPaused) { 3305 mIsPaused = false; 3306 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3307 if (mNativeClass != 0) { 3308 nativeSetPauseDrawing(mNativeClass, false); 3309 } 3310 } 3311 } 3312 3313 /** 3314 * Returns true if the view is paused, meaning onPause() was called. Calling 3315 * onResume() sets the paused state back to false. 3316 * @hide 3317 */ 3318 public boolean isPaused() { 3319 return mIsPaused; 3320 } 3321 3322 /** 3323 * Call this to inform the view that memory is low so that it can 3324 * free any available memory. 3325 */ 3326 public void freeMemory() { 3327 checkThread(); 3328 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3329 } 3330 3331 /** 3332 * Clear the resource cache. Note that the cache is per-application, so 3333 * this will clear the cache for all WebViews used. 3334 * 3335 * @param includeDiskFiles If false, only the RAM cache is cleared. 3336 */ 3337 public void clearCache(boolean includeDiskFiles) { 3338 checkThread(); 3339 // Note: this really needs to be a static method as it clears cache for all 3340 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3341 // we can't make this static. 3342 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3343 includeDiskFiles ? 1 : 0, 0); 3344 } 3345 3346 /** 3347 * Make sure that clearing the form data removes the adapter from the 3348 * currently focused textfield if there is one. 3349 */ 3350 public void clearFormData() { 3351 checkThread(); 3352 if (inEditingMode()) { 3353 mWebTextView.setAdapterCustom(null); 3354 } 3355 } 3356 3357 /** 3358 * Tell the WebView to clear its internal back/forward list. 3359 */ 3360 public void clearHistory() { 3361 checkThread(); 3362 mCallbackProxy.getBackForwardList().setClearPending(); 3363 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3364 } 3365 3366 /** 3367 * Clear the SSL preferences table stored in response to proceeding with SSL 3368 * certificate errors. 3369 */ 3370 public void clearSslPreferences() { 3371 checkThread(); 3372 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3373 } 3374 3375 /** 3376 * Return the WebBackForwardList for this WebView. This contains the 3377 * back/forward list for use in querying each item in the history stack. 3378 * This is a copy of the private WebBackForwardList so it contains only a 3379 * snapshot of the current state. Multiple calls to this method may return 3380 * different objects. The object returned from this method will not be 3381 * updated to reflect any new state. 3382 */ 3383 public WebBackForwardList copyBackForwardList() { 3384 checkThread(); 3385 return mCallbackProxy.getBackForwardList().clone(); 3386 } 3387 3388 /* 3389 * Highlight and scroll to the next occurance of String in findAll. 3390 * Wraps the page infinitely, and scrolls. Must be called after 3391 * calling findAll. 3392 * 3393 * @param forward Direction to search. 3394 */ 3395 public void findNext(boolean forward) { 3396 checkThread(); 3397 if (0 == mNativeClass) return; // client isn't initialized 3398 nativeFindNext(forward); 3399 } 3400 3401 /* 3402 * Find all instances of find on the page and highlight them. 3403 * @param find String to find. 3404 * @return int The number of occurances of the String "find" 3405 * that were found. 3406 */ 3407 public int findAll(String find) { 3408 checkThread(); 3409 if (0 == mNativeClass) return 0; // client isn't initialized 3410 int result = find != null ? nativeFindAll(find.toLowerCase(), 3411 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3412 invalidate(); 3413 mLastFind = find; 3414 return result; 3415 } 3416 3417 /** 3418 * Start an ActionMode for finding text in this WebView. Only works if this 3419 * WebView is attached to the view system. 3420 * @param text If non-null, will be the initial text to search for. 3421 * Otherwise, the last String searched for in this WebView will 3422 * be used to start. 3423 * @param showIme If true, show the IME, assuming the user will begin typing. 3424 * If false and text is non-null, perform a find all. 3425 * @return boolean True if the find dialog is shown, false otherwise. 3426 */ 3427 public boolean showFindDialog(String text, boolean showIme) { 3428 checkThread(); 3429 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3430 if (getParent() == null || startActionMode(callback) == null) { 3431 // Could not start the action mode, so end Find on page 3432 return false; 3433 } 3434 mCachedOverlappingActionModeHeight = -1; 3435 mFindCallback = callback; 3436 setFindIsUp(true); 3437 mFindCallback.setWebView(this); 3438 if (showIme) { 3439 mFindCallback.showSoftInput(); 3440 } else if (text != null) { 3441 mFindCallback.setText(text); 3442 mFindCallback.findAll(); 3443 return true; 3444 } 3445 if (text == null) { 3446 text = mLastFind; 3447 } 3448 if (text != null) { 3449 mFindCallback.setText(text); 3450 } 3451 return true; 3452 } 3453 3454 /** 3455 * Keep track of the find callback so that we can remove its titlebar if 3456 * necessary. 3457 */ 3458 private FindActionModeCallback mFindCallback; 3459 3460 /** 3461 * Toggle whether the find dialog is showing, for both native and Java. 3462 */ 3463 private void setFindIsUp(boolean isUp) { 3464 mFindIsUp = isUp; 3465 if (0 == mNativeClass) return; // client isn't initialized 3466 nativeSetFindIsUp(isUp); 3467 } 3468 3469 /** 3470 * Return the index of the currently highlighted match. 3471 */ 3472 int findIndex() { 3473 if (0 == mNativeClass) return -1; 3474 return nativeFindIndex(); 3475 } 3476 3477 // Used to know whether the find dialog is open. Affects whether 3478 // or not we draw the highlights for matches. 3479 private boolean mFindIsUp; 3480 3481 // Keep track of the last string sent, so we can search again when find is 3482 // reopened. 3483 private String mLastFind; 3484 3485 /** 3486 * Return the first substring consisting of the address of a physical 3487 * location. Currently, only addresses in the United States are detected, 3488 * and consist of: 3489 * - a house number 3490 * - a street name 3491 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3492 * - a city name 3493 * - a state or territory, either spelled out or two-letter abbr. 3494 * - an optional 5 digit or 9 digit zip code. 3495 * 3496 * All names must be correctly capitalized, and the zip code, if present, 3497 * must be valid for the state. The street type must be a standard USPS 3498 * spelling or abbreviation. The state or territory must also be spelled 3499 * or abbreviated using USPS standards. The house number may not exceed 3500 * five digits. 3501 * @param addr The string to search for addresses. 3502 * 3503 * @return the address, or if no address is found, return null. 3504 */ 3505 public static String findAddress(String addr) { 3506 checkThread(); 3507 return findAddress(addr, false); 3508 } 3509 3510 /** 3511 * @hide 3512 * Return the first substring consisting of the address of a physical 3513 * location. Currently, only addresses in the United States are detected, 3514 * and consist of: 3515 * - a house number 3516 * - a street name 3517 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3518 * - a city name 3519 * - a state or territory, either spelled out or two-letter abbr. 3520 * - an optional 5 digit or 9 digit zip code. 3521 * 3522 * Names are optionally capitalized, and the zip code, if present, 3523 * must be valid for the state. The street type must be a standard USPS 3524 * spelling or abbreviation. The state or territory must also be spelled 3525 * or abbreviated using USPS standards. The house number may not exceed 3526 * five digits. 3527 * @param addr The string to search for addresses. 3528 * @param caseInsensitive addr Set to true to make search ignore case. 3529 * 3530 * @return the address, or if no address is found, return null. 3531 */ 3532 public static String findAddress(String addr, boolean caseInsensitive) { 3533 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3534 } 3535 3536 /* 3537 * Clear the highlighting surrounding text matches created by findAll. 3538 */ 3539 public void clearMatches() { 3540 checkThread(); 3541 if (mNativeClass == 0) 3542 return; 3543 nativeSetFindIsEmpty(); 3544 invalidate(); 3545 } 3546 3547 /** 3548 * Called when the find ActionMode ends. 3549 */ 3550 void notifyFindDialogDismissed() { 3551 mFindCallback = null; 3552 mCachedOverlappingActionModeHeight = -1; 3553 if (mWebViewCore == null) { 3554 return; 3555 } 3556 clearMatches(); 3557 setFindIsUp(false); 3558 // Now that the dialog has been removed, ensure that we scroll to a 3559 // location that is not beyond the end of the page. 3560 pinScrollTo(mScrollX, mScrollY, false, 0); 3561 invalidate(); 3562 } 3563 3564 /** 3565 * Query the document to see if it contains any image references. The 3566 * message object will be dispatched with arg1 being set to 1 if images 3567 * were found and 0 if the document does not reference any images. 3568 * @param response The message that will be dispatched with the result. 3569 */ 3570 public void documentHasImages(Message response) { 3571 checkThread(); 3572 if (response == null) { 3573 return; 3574 } 3575 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3576 } 3577 3578 /** 3579 * Request the scroller to abort any ongoing animation 3580 * 3581 * @hide 3582 */ 3583 public void stopScroll() { 3584 mScroller.forceFinished(true); 3585 mLastVelocity = 0; 3586 } 3587 3588 @Override 3589 public void computeScroll() { 3590 if (mScroller.computeScrollOffset()) { 3591 int oldX = mScrollX; 3592 int oldY = mScrollY; 3593 int x = mScroller.getCurrX(); 3594 int y = mScroller.getCurrY(); 3595 invalidate(); // So we draw again 3596 3597 if (!mScroller.isFinished()) { 3598 int rangeX = computeMaxScrollX(); 3599 int rangeY = computeMaxScrollY(); 3600 int overflingDistance = mOverflingDistance; 3601 3602 // Use the layer's scroll data if needed. 3603 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3604 oldX = mScrollingLayerRect.left; 3605 oldY = mScrollingLayerRect.top; 3606 rangeX = mScrollingLayerRect.right; 3607 rangeY = mScrollingLayerRect.bottom; 3608 // No overscrolling for layers. 3609 overflingDistance = 0; 3610 } 3611 3612 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3613 rangeX, rangeY, 3614 overflingDistance, overflingDistance, false); 3615 3616 if (mOverScrollGlow != null) { 3617 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3618 } 3619 } else { 3620 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3621 mScrollX = x; 3622 mScrollY = y; 3623 } else { 3624 // Update the layer position instead of WebView. 3625 scrollLayerTo(x, y); 3626 } 3627 abortAnimation(); 3628 nativeSetIsScrolling(false); 3629 if (!mBlockWebkitViewMessages) { 3630 WebViewCore.resumePriority(); 3631 if (!mSelectingText) { 3632 WebViewCore.resumeUpdatePicture(mWebViewCore); 3633 } 3634 } 3635 if (oldX != mScrollX || oldY != mScrollY) { 3636 sendOurVisibleRect(); 3637 } 3638 } 3639 } else { 3640 super.computeScroll(); 3641 } 3642 } 3643 3644 private void scrollLayerTo(int x, int y) { 3645 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3646 return; 3647 } 3648 nativeScrollLayer(mScrollingLayer, x, y); 3649 mScrollingLayerRect.left = x; 3650 mScrollingLayerRect.top = y; 3651 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 3652 invalidate(); 3653 } 3654 3655 private static int computeDuration(int dx, int dy) { 3656 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3657 int duration = distance * 1000 / STD_SPEED; 3658 return Math.min(duration, MAX_DURATION); 3659 } 3660 3661 // helper to pin the scrollBy parameters (already in view coordinates) 3662 // returns true if the scroll was changed 3663 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3664 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3665 } 3666 // helper to pin the scrollTo parameters (already in view coordinates) 3667 // returns true if the scroll was changed 3668 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3669 x = pinLocX(x); 3670 y = pinLocY(y); 3671 int dx = x - mScrollX; 3672 int dy = y - mScrollY; 3673 3674 if ((dx | dy) == 0) { 3675 return false; 3676 } 3677 abortAnimation(); 3678 if (animate) { 3679 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3680 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3681 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3682 awakenScrollBars(mScroller.getDuration()); 3683 invalidate(); 3684 } else { 3685 scrollTo(x, y); 3686 } 3687 return true; 3688 } 3689 3690 // Scale from content to view coordinates, and pin. 3691 // Also called by jni webview.cpp 3692 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3693 if (mDrawHistory) { 3694 // disallow WebView to change the scroll position as History Picture 3695 // is used in the view system. 3696 // TODO: as we switchOutDrawHistory when trackball or navigation 3697 // keys are hit, this should be safe. Right? 3698 return false; 3699 } 3700 cx = contentToViewDimension(cx); 3701 cy = contentToViewDimension(cy); 3702 if (mHeightCanMeasure) { 3703 // move our visible rect according to scroll request 3704 if (cy != 0) { 3705 Rect tempRect = new Rect(); 3706 calcOurVisibleRect(tempRect); 3707 tempRect.offset(cx, cy); 3708 requestRectangleOnScreen(tempRect); 3709 } 3710 // FIXME: We scroll horizontally no matter what because currently 3711 // ScrollView and ListView will not scroll horizontally. 3712 // FIXME: Why do we only scroll horizontally if there is no 3713 // vertical scroll? 3714// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3715 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3716 } else { 3717 return pinScrollBy(cx, cy, animate, 0); 3718 } 3719 } 3720 3721 /** 3722 * Called by CallbackProxy when the page starts loading. 3723 * @param url The URL of the page which has started loading. 3724 */ 3725 /* package */ void onPageStarted(String url) { 3726 // every time we start a new page, we want to reset the 3727 // WebView certificate: if the new site is secure, we 3728 // will reload it and get a new certificate set; 3729 // if the new site is not secure, the certificate must be 3730 // null, and that will be the case 3731 setCertificate(null); 3732 3733 // reset the flag since we set to true in if need after 3734 // loading is see onPageFinished(Url) 3735 mAccessibilityScriptInjected = false; 3736 } 3737 3738 /** 3739 * Called by CallbackProxy when the page finishes loading. 3740 * @param url The URL of the page which has finished loading. 3741 */ 3742 /* package */ void onPageFinished(String url) { 3743 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3744 // If the user is now on a different page, or has scrolled the page 3745 // past the point where the title bar is offscreen, ignore the 3746 // scroll request. 3747 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3748 && mScrollX == 0 && mScrollY == 0) { 3749 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3750 SLIDE_TITLE_DURATION); 3751 } 3752 mPageThatNeedsToSlideTitleBarOffScreen = null; 3753 } 3754 mZoomManager.onPageFinished(url); 3755 injectAccessibilityForUrl(url); 3756 } 3757 3758 /** 3759 * This method injects accessibility in the loaded document if accessibility 3760 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3761 * If no URL specific script is found or JavaScript is disabled we fallback to 3762 * the default {@link AccessibilityInjector} implementation. 3763 * </p> 3764 * If the URL has the "axs" paramter set to 1 it has already done the 3765 * script injection so we do nothing. If the parameter is set to 0 3766 * the URL opts out accessibility script injection so we fall back to 3767 * the default {@link AccessibilityInjector}. 3768 * </p> 3769 * Note: If the user has not opted-in the accessibility script injection no scripts 3770 * are injected rather the default {@link AccessibilityInjector} implementation 3771 * is used. 3772 * 3773 * @param url The URL loaded by this {@link WebView}. 3774 */ 3775 private void injectAccessibilityForUrl(String url) { 3776 if (mWebViewCore == null) { 3777 return; 3778 } 3779 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3780 3781 if (!accessibilityManager.isEnabled()) { 3782 // it is possible that accessibility was turned off between reloads 3783 ensureAccessibilityScriptInjectorInstance(false); 3784 return; 3785 } 3786 3787 if (!getSettings().getJavaScriptEnabled()) { 3788 // no JS so we fallback to the basic buil-in support 3789 ensureAccessibilityScriptInjectorInstance(true); 3790 return; 3791 } 3792 3793 // check the URL "axs" parameter to choose appropriate action 3794 int axsParameterValue = getAxsUrlParameterValue(url); 3795 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3796 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3797 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3798 if (onDeviceScriptInjectionEnabled) { 3799 ensureAccessibilityScriptInjectorInstance(false); 3800 // neither script injected nor script injection opted out => we inject 3801 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3802 // TODO: Set this flag after successfull script injection. Maybe upon injection 3803 // the chooser should update the meta tag and we check it to declare success 3804 mAccessibilityScriptInjected = true; 3805 } else { 3806 // injection disabled so we fallback to the basic built-in support 3807 ensureAccessibilityScriptInjectorInstance(true); 3808 } 3809 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3810 // injection opted out so we fallback to the basic buil-in support 3811 ensureAccessibilityScriptInjectorInstance(true); 3812 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3813 ensureAccessibilityScriptInjectorInstance(false); 3814 // the URL provides accessibility but we still need to add our generic script 3815 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3816 } else { 3817 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3818 } 3819 } 3820 3821 /** 3822 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3823 * 3824 * @param present True to ensure an insance, false to ensure no instance. 3825 */ 3826 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3827 if (present) { 3828 if (mAccessibilityInjector == null) { 3829 mAccessibilityInjector = new AccessibilityInjector(this); 3830 } 3831 } else { 3832 mAccessibilityInjector = null; 3833 } 3834 } 3835 3836 /** 3837 * Gets the "axs" URL parameter value. 3838 * 3839 * @param url A url to fetch the paramter from. 3840 * @return The parameter value if such, -1 otherwise. 3841 */ 3842 private int getAxsUrlParameterValue(String url) { 3843 if (mMatchAxsUrlParameterPattern == null) { 3844 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3845 } 3846 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3847 if (matcher.find()) { 3848 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3849 return Integer.parseInt(keyValuePair.split("=")[1]); 3850 } 3851 return -1; 3852 } 3853 3854 /** 3855 * The URL of a page that sent a message to scroll the title bar off screen. 3856 * 3857 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3858 * title bar off the screen. Sometimes, the scroll position is set before 3859 * the page finishes loading. Rather than scrolling while the page is still 3860 * loading, keep track of the URL and new scroll position so we can perform 3861 * the scroll once the page finishes loading. 3862 */ 3863 private String mPageThatNeedsToSlideTitleBarOffScreen; 3864 3865 /** 3866 * The destination Y scroll position to be used when the page finishes 3867 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3868 */ 3869 private int mYDistanceToSlideTitleOffScreen; 3870 3871 // scale from content to view coordinates, and pin 3872 // return true if pin caused the final x/y different than the request cx/cy, 3873 // and a future scroll may reach the request cx/cy after our size has 3874 // changed 3875 // return false if the view scroll to the exact position as it is requested, 3876 // where negative numbers are taken to mean 0 3877 private boolean setContentScrollTo(int cx, int cy) { 3878 if (mDrawHistory) { 3879 // disallow WebView to change the scroll position as History Picture 3880 // is used in the view system. 3881 // One known case where this is called is that WebCore tries to 3882 // restore the scroll position. As history Picture already uses the 3883 // saved scroll position, it is ok to skip this. 3884 return false; 3885 } 3886 int vx; 3887 int vy; 3888 if ((cx | cy) == 0) { 3889 // If the page is being scrolled to (0,0), do not add in the title 3890 // bar's height, and simply scroll to (0,0). (The only other work 3891 // in contentToView_ is to multiply, so this would not change 0.) 3892 vx = 0; 3893 vy = 0; 3894 } else { 3895 vx = contentToViewX(cx); 3896 vy = contentToViewY(cy); 3897 } 3898// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3899// vx + " " + vy + "]"); 3900 // Some mobile sites attempt to scroll the title bar off the page by 3901 // scrolling to (0,1). If we are at the top left corner of the 3902 // page, assume this is an attempt to scroll off the title bar, and 3903 // animate the title bar off screen slowly enough that the user can see 3904 // it. 3905 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3906 && mTitleBar != null) { 3907 // FIXME: 100 should be defined somewhere as our max progress. 3908 if (getProgress() < 100) { 3909 // Wait to scroll the title bar off screen until the page has 3910 // finished loading. Keep track of the URL and the destination 3911 // Y position 3912 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3913 mYDistanceToSlideTitleOffScreen = vy; 3914 } else { 3915 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3916 } 3917 // Since we are animating, we have not yet reached the desired 3918 // scroll position. Do not return true to request another attempt 3919 return false; 3920 } 3921 pinScrollTo(vx, vy, false, 0); 3922 // If the request was to scroll to a negative coordinate, treat it as if 3923 // it was a request to scroll to 0 3924 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3925 return true; 3926 } else { 3927 return false; 3928 } 3929 } 3930 3931 // scale from content to view coordinates, and pin 3932 private void spawnContentScrollTo(int cx, int cy) { 3933 if (mDrawHistory) { 3934 // disallow WebView to change the scroll position as History Picture 3935 // is used in the view system. 3936 return; 3937 } 3938 int vx = contentToViewX(cx); 3939 int vy = contentToViewY(cy); 3940 pinScrollTo(vx, vy, true, 0); 3941 } 3942 3943 /** 3944 * These are from webkit, and are in content coordinate system (unzoomed) 3945 */ 3946 private void contentSizeChanged(boolean updateLayout) { 3947 // suppress 0,0 since we usually see real dimensions soon after 3948 // this avoids drawing the prev content in a funny place. If we find a 3949 // way to consolidate these notifications, this check may become 3950 // obsolete 3951 if ((mContentWidth | mContentHeight) == 0) { 3952 return; 3953 } 3954 3955 if (mHeightCanMeasure) { 3956 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3957 || updateLayout) { 3958 requestLayout(); 3959 } 3960 } else if (mWidthCanMeasure) { 3961 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3962 || updateLayout) { 3963 requestLayout(); 3964 } 3965 } else { 3966 // If we don't request a layout, try to send our view size to the 3967 // native side to ensure that WebCore has the correct dimensions. 3968 sendViewSizeZoom(false); 3969 } 3970 } 3971 3972 /** 3973 * Set the WebViewClient that will receive various notifications and 3974 * requests. This will replace the current handler. 3975 * @param client An implementation of WebViewClient. 3976 */ 3977 public void setWebViewClient(WebViewClient client) { 3978 checkThread(); 3979 mCallbackProxy.setWebViewClient(client); 3980 } 3981 3982 /** 3983 * Gets the WebViewClient 3984 * @return the current WebViewClient instance. 3985 * 3986 *@hide pending API council approval. 3987 */ 3988 public WebViewClient getWebViewClient() { 3989 return mCallbackProxy.getWebViewClient(); 3990 } 3991 3992 /** 3993 * Register the interface to be used when content can not be handled by 3994 * the rendering engine, and should be downloaded instead. This will replace 3995 * the current handler. 3996 * @param listener An implementation of DownloadListener. 3997 */ 3998 public void setDownloadListener(DownloadListener listener) { 3999 checkThread(); 4000 mCallbackProxy.setDownloadListener(listener); 4001 } 4002 4003 /** 4004 * Set the chrome handler. This is an implementation of WebChromeClient for 4005 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4006 * This will replace the current handler. 4007 * @param client An implementation of WebChromeClient. 4008 */ 4009 public void setWebChromeClient(WebChromeClient client) { 4010 checkThread(); 4011 mCallbackProxy.setWebChromeClient(client); 4012 } 4013 4014 /** 4015 * Gets the chrome handler. 4016 * @return the current WebChromeClient instance. 4017 * 4018 * @hide API council approval. 4019 */ 4020 public WebChromeClient getWebChromeClient() { 4021 return mCallbackProxy.getWebChromeClient(); 4022 } 4023 4024 /** 4025 * Set the back/forward list client. This is an implementation of 4026 * WebBackForwardListClient for handling new items and changes in the 4027 * history index. 4028 * @param client An implementation of WebBackForwardListClient. 4029 * {@hide} 4030 */ 4031 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4032 mCallbackProxy.setWebBackForwardListClient(client); 4033 } 4034 4035 /** 4036 * Gets the WebBackForwardListClient. 4037 * {@hide} 4038 */ 4039 public WebBackForwardListClient getWebBackForwardListClient() { 4040 return mCallbackProxy.getWebBackForwardListClient(); 4041 } 4042 4043 /** 4044 * Set the Picture listener. This is an interface used to receive 4045 * notifications of a new Picture. 4046 * @param listener An implementation of WebView.PictureListener. 4047 * @deprecated This method is now obsolete. 4048 */ 4049 @Deprecated 4050 public void setPictureListener(PictureListener listener) { 4051 checkThread(); 4052 mPictureListener = listener; 4053 } 4054 4055 /** 4056 * {@hide} 4057 */ 4058 /* FIXME: Debug only! Remove for SDK! */ 4059 public void externalRepresentation(Message callback) { 4060 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4061 } 4062 4063 /** 4064 * {@hide} 4065 */ 4066 /* FIXME: Debug only! Remove for SDK! */ 4067 public void documentAsText(Message callback) { 4068 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4069 } 4070 4071 /** 4072 * This method injects the supplied Java object into the WebView. The 4073 * object is injected into the JavaScript context of the main frame, using 4074 * the supplied name. This allows the Java object to be accessed from 4075 * JavaScript. Note that that injected objects will not appear in 4076 * JavaScript until the page is next (re)loaded. For example: 4077 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4078 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4079 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4080 * <p><strong>IMPORTANT:</strong> 4081 * <ul> 4082 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4083 * the host application. This is a powerful feature, but also presents a 4084 * security risk. Use of this method in a WebView containing untrusted 4085 * content could allow an attacker to manipulate the host application in 4086 * unintended ways, executing Java code with the permissions of the host 4087 * application. Use extreme care when using this method in a WebView which 4088 * could contain untrusted content. 4089 * <li> JavaScript interacts with Java object on a private, background 4090 * thread of the WebView. Care is therefore required to maintain thread 4091 * safety.</li> 4092 * </ul></p> 4093 * @param object The Java object to inject into the WebView's JavaScript 4094 * context. Null values are ignored. 4095 * @param name The name used to expose the instance in JavaScript. 4096 */ 4097 public void addJavascriptInterface(Object object, String name) { 4098 checkThread(); 4099 if (object == null) { 4100 return; 4101 } 4102 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4103 arg.mObject = object; 4104 arg.mInterfaceName = name; 4105 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4106 } 4107 4108 /** 4109 * Removes a previously added JavaScript interface with the given name. 4110 * @param interfaceName The name of the interface to remove. 4111 */ 4112 public void removeJavascriptInterface(String interfaceName) { 4113 checkThread(); 4114 if (mWebViewCore != null) { 4115 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4116 arg.mInterfaceName = interfaceName; 4117 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4118 } 4119 } 4120 4121 /** 4122 * Return the WebSettings object used to control the settings for this 4123 * WebView. 4124 * @return A WebSettings object that can be used to control this WebView's 4125 * settings. 4126 */ 4127 public WebSettings getSettings() { 4128 checkThread(); 4129 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4130 } 4131 4132 /** 4133 * Return the list of currently loaded plugins. 4134 * @return The list of currently loaded plugins. 4135 * 4136 * @hide 4137 * @deprecated This was used for Gears, which has been deprecated. 4138 */ 4139 @Deprecated 4140 public static synchronized PluginList getPluginList() { 4141 checkThread(); 4142 return new PluginList(); 4143 } 4144 4145 /** 4146 * @hide 4147 * @deprecated This was used for Gears, which has been deprecated. 4148 */ 4149 @Deprecated 4150 public void refreshPlugins(boolean reloadOpenPages) { 4151 checkThread(); 4152 } 4153 4154 //------------------------------------------------------------------------- 4155 // Override View methods 4156 //------------------------------------------------------------------------- 4157 4158 @Override 4159 protected void finalize() throws Throwable { 4160 try { 4161 if (mNativeClass != 0) { 4162 mPrivateHandler.post(new Runnable() { 4163 @Override 4164 public void run() { 4165 destroy(); 4166 } 4167 }); 4168 } 4169 } finally { 4170 super.finalize(); 4171 } 4172 } 4173 4174 @Override 4175 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4176 if (child == mTitleBar) { 4177 // When drawing the title bar, move it horizontally to always show 4178 // at the top of the WebView. 4179 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4180 int newTop = 0; 4181 if (mTitleGravity == Gravity.NO_GRAVITY) { 4182 newTop = Math.min(0, mScrollY); 4183 } else if (mTitleGravity == Gravity.TOP) { 4184 newTop = mScrollY; 4185 } 4186 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4187 mTitleBar.setTop(newTop); 4188 } 4189 return super.drawChild(canvas, child, drawingTime); 4190 } 4191 4192 private void drawContent(Canvas canvas, boolean drawRings) { 4193 drawCoreAndCursorRing(canvas, mBackgroundColor, 4194 mDrawCursorRing && drawRings); 4195 } 4196 4197 /** 4198 * Draw the background when beyond bounds 4199 * @param canvas Canvas to draw into 4200 */ 4201 private void drawOverScrollBackground(Canvas canvas) { 4202 if (mOverScrollBackground == null) { 4203 mOverScrollBackground = new Paint(); 4204 Bitmap bm = BitmapFactory.decodeResource( 4205 mContext.getResources(), 4206 com.android.internal.R.drawable.status_bar_background); 4207 mOverScrollBackground.setShader(new BitmapShader(bm, 4208 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4209 mOverScrollBorder = new Paint(); 4210 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4211 mOverScrollBorder.setStrokeWidth(0); 4212 mOverScrollBorder.setColor(0xffbbbbbb); 4213 } 4214 4215 int top = 0; 4216 int right = computeRealHorizontalScrollRange(); 4217 int bottom = top + computeRealVerticalScrollRange(); 4218 // first draw the background and anchor to the top of the view 4219 canvas.save(); 4220 canvas.translate(mScrollX, mScrollY); 4221 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4222 - mScrollY, Region.Op.DIFFERENCE); 4223 canvas.drawPaint(mOverScrollBackground); 4224 canvas.restore(); 4225 // then draw the border 4226 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4227 // next clip the region for the content 4228 canvas.clipRect(0, top, right, bottom); 4229 } 4230 4231 @Override 4232 protected void onDraw(Canvas canvas) { 4233 // if mNativeClass is 0, the WebView is either destroyed or not 4234 // initialized. In either case, just draw the background color and return 4235 if (mNativeClass == 0) { 4236 canvas.drawColor(mBackgroundColor); 4237 return; 4238 } 4239 4240 // if both mContentWidth and mContentHeight are 0, it means there is no 4241 // valid Picture passed to WebView yet. This can happen when WebView 4242 // just starts. Draw the background and return. 4243 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4244 canvas.drawColor(mBackgroundColor); 4245 return; 4246 } 4247 4248 if (canvas.isHardwareAccelerated()) { 4249 if (mIncrementEGLContextHack == false) { 4250 mIncrementEGLContextHack = true; 4251 EGL10 egl = (EGL10) EGLContext.getEGL(); 4252 EGLDisplay eglDisplay = egl.eglGetDisplay(EGL_DEFAULT_DISPLAY); 4253 int[] version = new int[2]; 4254 egl.eglInitialize(eglDisplay, version); 4255 } 4256 mZoomManager.setHardwareAccelerated(); 4257 } 4258 4259 int saveCount = canvas.save(); 4260 if (mInOverScrollMode && !getSettings() 4261 .getUseWebViewBackgroundForOverscrollBackground()) { 4262 drawOverScrollBackground(canvas); 4263 } 4264 if (mTitleBar != null) { 4265 canvas.translate(0, getTitleHeight()); 4266 } 4267 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4268 && (mTouchMode == TOUCH_INIT_MODE 4269 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4270 || mTouchMode == TOUCH_SHORTPRESS_MODE 4271 || mTouchMode == TOUCH_DONE_MODE); 4272 boolean drawNativeRings = !drawJavaRings; 4273 if (USE_WEBKIT_RINGS) { 4274 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4275 } 4276 drawContent(canvas, drawNativeRings); 4277 canvas.restoreToCount(saveCount); 4278 4279 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4280 invalidate(); 4281 } 4282 mWebViewCore.signalRepaintDone(); 4283 4284 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4285 invalidate(); 4286 } 4287 4288 // paint the highlight in the end 4289 if (drawJavaRings) { 4290 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4291 if (delay < ViewConfiguration.getTapTimeout()) { 4292 Rect r = mTouchHighlightRegion.getBounds(); 4293 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4294 } else { 4295 if (mTouchHightlightPaint == null) { 4296 mTouchHightlightPaint = new Paint(); 4297 mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR); 4298 } 4299 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4300 Rect r = new Rect(); 4301 while (iter.next(r)) { 4302 canvas.drawRect(r, mTouchHightlightPaint); 4303 } 4304 } 4305 } 4306 if (DEBUG_TOUCH_HIGHLIGHT) { 4307 if (getSettings().getNavDump()) { 4308 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4309 if (mTouchCrossHairColor == null) { 4310 mTouchCrossHairColor = new Paint(); 4311 mTouchCrossHairColor.setColor(Color.RED); 4312 } 4313 canvas.drawLine(mTouchHighlightX - mNavSlop, 4314 mTouchHighlightY - mNavSlop, mTouchHighlightX 4315 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4316 + 1, mTouchCrossHairColor); 4317 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4318 mTouchHighlightY - mNavSlop, mTouchHighlightX 4319 - mNavSlop, 4320 mTouchHighlightY + mNavSlop + 1, 4321 mTouchCrossHairColor); 4322 } 4323 } 4324 } 4325 } 4326 4327 private void removeTouchHighlight() { 4328 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4329 mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS); 4330 setTouchHighlightRects(null); 4331 } 4332 4333 @Override 4334 public void setLayoutParams(ViewGroup.LayoutParams params) { 4335 if (params.height == LayoutParams.WRAP_CONTENT) { 4336 mWrapContent = true; 4337 } 4338 super.setLayoutParams(params); 4339 } 4340 4341 @Override 4342 public boolean performLongClick() { 4343 // performLongClick() is the result of a delayed message. If we switch 4344 // to windows overview, the WebView will be temporarily removed from the 4345 // view system. In that case, do nothing. 4346 if (getParent() == null) return false; 4347 4348 // A multi-finger gesture can look like a long press; make sure we don't take 4349 // long press actions if we're scaling. 4350 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4351 if (detector != null && detector.isInProgress()) { 4352 return false; 4353 } 4354 4355 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4356 // Send the click so that the textfield is in focus 4357 centerKeyPressOnTextField(); 4358 rebuildWebTextView(); 4359 } else { 4360 clearTextEntry(); 4361 } 4362 if (inEditingMode()) { 4363 // Since we just called rebuildWebTextView, the layout is not set 4364 // properly. Update it so it can correctly find the word to select. 4365 mWebTextView.ensureLayout(); 4366 // Provide a touch down event to WebTextView, which will allow it 4367 // to store the location to use in performLongClick. 4368 AbsoluteLayout.LayoutParams params 4369 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4370 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4371 mLastTouchTime, MotionEvent.ACTION_DOWN, 4372 mLastTouchX - params.x + mScrollX, 4373 mLastTouchY - params.y + mScrollY, 0); 4374 mWebTextView.dispatchTouchEvent(fake); 4375 return mWebTextView.performLongClick(); 4376 } 4377 if (mSelectingText) return false; // long click does nothing on selection 4378 /* if long click brings up a context menu, the super function 4379 * returns true and we're done. Otherwise, nothing happened when 4380 * the user clicked. */ 4381 if (super.performLongClick()) { 4382 return true; 4383 } 4384 /* In the case where the application hasn't already handled the long 4385 * click action, look for a word under the click. If one is found, 4386 * animate the text selection into view. 4387 * FIXME: no animation code yet */ 4388 final boolean isSelecting = selectText(); 4389 if (isSelecting) { 4390 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4391 } 4392 return isSelecting; 4393 } 4394 4395 /** 4396 * Select the word at the last click point. 4397 * 4398 * @hide pending API council approval 4399 */ 4400 public boolean selectText() { 4401 int x = viewToContentX(mLastTouchX + mScrollX); 4402 int y = viewToContentY(mLastTouchY + mScrollY); 4403 return selectText(x, y); 4404 } 4405 4406 /** 4407 * Select the word at the indicated content coordinates. 4408 */ 4409 boolean selectText(int x, int y) { 4410 if (!setUpSelect(true, x, y)) { 4411 return false; 4412 } 4413 nativeSetExtendSelection(); 4414 mDrawSelectionPointer = false; 4415 mTouchMode = TOUCH_DRAG_MODE; 4416 return true; 4417 } 4418 4419 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4420 4421 @Override 4422 protected void onConfigurationChanged(Configuration newConfig) { 4423 mCachedOverlappingActionModeHeight = -1; 4424 if (mSelectingText && mOrientation != newConfig.orientation) { 4425 selectionDone(); 4426 } 4427 mOrientation = newConfig.orientation; 4428 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4429 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4430 } 4431 } 4432 4433 /** 4434 * Keep track of the Callback so we can end its ActionMode or remove its 4435 * titlebar. 4436 */ 4437 private SelectActionModeCallback mSelectCallback; 4438 4439 // These values are possible options for didUpdateWebTextViewDimensions. 4440 private static final int FULLY_ON_SCREEN = 0; 4441 private static final int INTERSECTS_SCREEN = 1; 4442 private static final int ANYWHERE = 2; 4443 4444 /** 4445 * Check to see if the focused textfield/textarea is still on screen. If it 4446 * is, update the the dimensions and location of WebTextView. Otherwise, 4447 * remove the WebTextView. Should be called when the zoom level changes. 4448 * @param intersection How to determine whether the textfield/textarea is 4449 * still on screen. 4450 * @return boolean True if the textfield/textarea is still on screen and the 4451 * dimensions/location of WebTextView have been updated. 4452 */ 4453 private boolean didUpdateWebTextViewDimensions(int intersection) { 4454 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4455 Rect vBox = contentToViewRect(contentBounds); 4456 Rect visibleRect = new Rect(); 4457 calcOurVisibleRect(visibleRect); 4458 // If the textfield is on screen, place the WebTextView in 4459 // its new place, accounting for our new scroll/zoom values, 4460 // and adjust its textsize. 4461 boolean onScreen; 4462 switch (intersection) { 4463 case FULLY_ON_SCREEN: 4464 onScreen = visibleRect.contains(vBox); 4465 break; 4466 case INTERSECTS_SCREEN: 4467 onScreen = Rect.intersects(visibleRect, vBox); 4468 break; 4469 case ANYWHERE: 4470 onScreen = true; 4471 break; 4472 default: 4473 throw new AssertionError( 4474 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4475 } 4476 if (onScreen) { 4477 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4478 vBox.height()); 4479 mWebTextView.updateTextSize(); 4480 updateWebTextViewPadding(); 4481 return true; 4482 } else { 4483 // The textfield is now off screen. The user probably 4484 // was not zooming to see the textfield better. Remove 4485 // the WebTextView. If the user types a key, and the 4486 // textfield is still in focus, we will reconstruct 4487 // the WebTextView and scroll it back on screen. 4488 mWebTextView.remove(); 4489 return false; 4490 } 4491 } 4492 4493 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4494 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4495 if (mNativeClass == 0) 4496 return; 4497 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4498 isPictureAfterFirstLayout, registerPageSwapCallback); 4499 if (mHTML5VideoViewProxy != null) { 4500 mHTML5VideoViewProxy.setBaseLayer(layer); 4501 } 4502 } 4503 4504 int getBaseLayer() { 4505 if (mNativeClass == 0) { 4506 return 0; 4507 } 4508 return nativeGetBaseLayer(); 4509 } 4510 4511 private void onZoomAnimationStart() { 4512 // If it is in password mode, turn it off so it does not draw misplaced. 4513 if (inEditingMode()) { 4514 mWebTextView.setVisibility(INVISIBLE); 4515 } 4516 } 4517 4518 private void onZoomAnimationEnd() { 4519 // adjust the edit text view if needed 4520 if (inEditingMode() 4521 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4522 // If it is a password field, start drawing the WebTextView once 4523 // again. 4524 mWebTextView.setVisibility(VISIBLE); 4525 } 4526 } 4527 4528 void onFixedLengthZoomAnimationStart() { 4529 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4530 onZoomAnimationStart(); 4531 } 4532 4533 void onFixedLengthZoomAnimationEnd() { 4534 if (!mBlockWebkitViewMessages && !mSelectingText) { 4535 WebViewCore.resumeUpdatePicture(mWebViewCore); 4536 } 4537 onZoomAnimationEnd(); 4538 } 4539 4540 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4541 Paint.DITHER_FLAG | 4542 Paint.SUBPIXEL_TEXT_FLAG; 4543 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4544 Paint.DITHER_FLAG; 4545 4546 private final DrawFilter mZoomFilter = 4547 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4548 // If we need to trade better quality for speed, set mScrollFilter to null 4549 private final DrawFilter mScrollFilter = 4550 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4551 4552 private void drawCoreAndCursorRing(Canvas canvas, int color, 4553 boolean drawCursorRing) { 4554 if (mDrawHistory) { 4555 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4556 canvas.drawPicture(mHistoryPicture); 4557 return; 4558 } 4559 if (mNativeClass == 0) return; 4560 4561 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4562 boolean animateScroll = ((!mScroller.isFinished() 4563 || mVelocityTracker != null) 4564 && (mTouchMode != TOUCH_DRAG_MODE || 4565 mHeldMotionless != MOTIONLESS_TRUE)) 4566 || mDeferTouchMode == TOUCH_DRAG_MODE; 4567 if (mTouchMode == TOUCH_DRAG_MODE) { 4568 if (mHeldMotionless == MOTIONLESS_PENDING) { 4569 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4570 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4571 mHeldMotionless = MOTIONLESS_FALSE; 4572 } 4573 if (mHeldMotionless == MOTIONLESS_FALSE) { 4574 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4575 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4576 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4577 .obtainMessage(AWAKEN_SCROLL_BARS), 4578 ViewConfiguration.getScrollDefaultDelay()); 4579 mHeldMotionless = MOTIONLESS_PENDING; 4580 } 4581 } 4582 int saveCount = canvas.save(); 4583 if (animateZoom) { 4584 mZoomManager.animateZoom(canvas); 4585 } else if (!canvas.isHardwareAccelerated()) { 4586 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4587 } 4588 4589 boolean UIAnimationsRunning = false; 4590 // Currently for each draw we compute the animation values; 4591 // We may in the future decide to do that independently. 4592 if (mNativeClass != 0 && nativeEvaluateLayersAnimations(mNativeClass)) { 4593 UIAnimationsRunning = true; 4594 // If we have unfinished (or unstarted) animations, 4595 // we ask for a repaint. We only need to do this in software 4596 // rendering (with hardware rendering we already have a different 4597 // method of requesting a repaint) 4598 if (!canvas.isHardwareAccelerated()) 4599 invalidate(); 4600 } 4601 4602 // decide which adornments to draw 4603 int extras = DRAW_EXTRAS_NONE; 4604 if (mFindIsUp) { 4605 extras = DRAW_EXTRAS_FIND; 4606 } else if (mSelectingText && (!USE_JAVA_TEXT_SELECTION || DEBUG_TEXT_HANDLES)) { 4607 extras = DRAW_EXTRAS_SELECTION; 4608 nativeSetSelectionPointer(mNativeClass, 4609 mDrawSelectionPointer, 4610 mZoomManager.getInvScale(), mSelectX, mSelectY - getTitleHeight()); 4611 } else if (drawCursorRing) { 4612 extras = DRAW_EXTRAS_CURSOR_RING; 4613 } 4614 if (DebugFlags.WEB_VIEW) { 4615 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4616 + " mSelectingText=" + mSelectingText 4617 + " nativePageShouldHandleShiftAndArrows()=" 4618 + nativePageShouldHandleShiftAndArrows() 4619 + " animateZoom=" + animateZoom 4620 + " extras=" + extras); 4621 } 4622 4623 calcOurContentVisibleRectF(mVisibleContentRect); 4624 if (canvas.isHardwareAccelerated()) { 4625 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4626 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4627 4628 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4629 viewRectViewport, mVisibleContentRect, getScale(), extras); 4630 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4631 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4632 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4633 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4634 } 4635 4636 } else { 4637 DrawFilter df = null; 4638 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4639 df = mZoomFilter; 4640 } else if (animateScroll) { 4641 df = mScrollFilter; 4642 } 4643 canvas.setDrawFilter(df); 4644 // XXX: Revisit splitting content. Right now it causes a 4645 // synchronization problem with layers. 4646 int content = nativeDraw(canvas, mVisibleContentRect, color, 4647 extras, false); 4648 canvas.setDrawFilter(null); 4649 if (!mBlockWebkitViewMessages && content != 0) { 4650 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4651 } 4652 } 4653 4654 canvas.restoreToCount(saveCount); 4655 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4656 drawTextSelectionHandles(canvas); 4657 } 4658 4659 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4660 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4661 mTouchMode = TOUCH_SHORTPRESS_MODE; 4662 } 4663 } 4664 if (mFocusSizeChanged) { 4665 mFocusSizeChanged = false; 4666 // If we are zooming, this will get handled above, when the zoom 4667 // finishes. We also do not need to do this unless the WebTextView 4668 // is showing. With hardware acceleration, the pageSwapCallback() 4669 // updates the WebTextView position in sync with page swapping 4670 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4671 didUpdateWebTextViewDimensions(ANYWHERE); 4672 } 4673 } 4674 } 4675 4676 private void drawTextSelectionHandles(Canvas canvas) { 4677 if (mTextSelectionPaint == null) { 4678 mTextSelectionPaint = new Paint(); 4679 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4680 } 4681 mTextSelectionRegion.setEmpty(); 4682 nativeGetTextSelectionRegion(mNativeClass, mTextSelectionRegion); 4683 Rect r = new Rect(); 4684 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4685 Rect clip = canvas.getClipBounds(); 4686 while (iter.next(r)) { 4687 r.set(contentToViewDimension(r.left), 4688 contentToViewDimension(r.top), 4689 contentToViewDimension(r.right), 4690 contentToViewDimension(r.bottom)); 4691 if (r.intersect(clip)) { 4692 canvas.drawRect(r, mTextSelectionPaint); 4693 } 4694 } 4695 if (mSelectHandleLeft == null) { 4696 mSelectHandleLeft = mContext.getResources().getDrawable( 4697 com.android.internal.R.drawable.text_select_handle_left); 4698 } 4699 int[] handles = new int[4]; 4700 nativeGetSelectionHandles(mNativeClass, handles); 4701 int start_x = contentToViewDimension(handles[0]); 4702 int start_y = contentToViewDimension(handles[1]); 4703 int end_x = contentToViewDimension(handles[2]); 4704 int end_y = contentToViewDimension(handles[3]); 4705 // Magic formula copied from TextView 4706 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4707 mSelectHandleLeft.setBounds(start_x, start_y, 4708 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4709 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4710 if (mSelectHandleRight == null) { 4711 mSelectHandleRight = mContext.getResources().getDrawable( 4712 com.android.internal.R.drawable.text_select_handle_right); 4713 } 4714 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4715 mSelectHandleRight.setBounds(end_x, end_y, 4716 end_x + mSelectHandleRight.getIntrinsicWidth(), 4717 end_y + mSelectHandleRight.getIntrinsicHeight()); 4718 if (DEBUG_TEXT_HANDLES) { 4719 mSelectHandleLeft.setAlpha(125); 4720 mSelectHandleRight.setAlpha(125); 4721 } 4722 mSelectHandleLeft.draw(canvas); 4723 mSelectHandleRight.draw(canvas); 4724 } 4725 4726 // draw history 4727 private boolean mDrawHistory = false; 4728 private Picture mHistoryPicture = null; 4729 private int mHistoryWidth = 0; 4730 private int mHistoryHeight = 0; 4731 4732 // Only check the flag, can be called from WebCore thread 4733 boolean drawHistory() { 4734 return mDrawHistory; 4735 } 4736 4737 int getHistoryPictureWidth() { 4738 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4739 } 4740 4741 // Should only be called in UI thread 4742 void switchOutDrawHistory() { 4743 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4744 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4745 mDrawHistory = false; 4746 mHistoryPicture = null; 4747 invalidate(); 4748 int oldScrollX = mScrollX; 4749 int oldScrollY = mScrollY; 4750 mScrollX = pinLocX(mScrollX); 4751 mScrollY = pinLocY(mScrollY); 4752 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4753 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4754 } else { 4755 sendOurVisibleRect(); 4756 } 4757 } 4758 } 4759 4760 WebViewCore.CursorData cursorData() { 4761 WebViewCore.CursorData result = cursorDataNoPosition(); 4762 Point position = nativeCursorPosition(); 4763 result.mX = position.x; 4764 result.mY = position.y; 4765 return result; 4766 } 4767 4768 WebViewCore.CursorData cursorDataNoPosition() { 4769 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4770 result.mMoveGeneration = nativeMoveGeneration(); 4771 result.mFrame = nativeCursorFramePointer(); 4772 return result; 4773 } 4774 4775 /** 4776 * Delete text from start to end in the focused textfield. If there is no 4777 * focus, or if start == end, silently fail. If start and end are out of 4778 * order, swap them. 4779 * @param start Beginning of selection to delete. 4780 * @param end End of selection to delete. 4781 */ 4782 /* package */ void deleteSelection(int start, int end) { 4783 mTextGeneration++; 4784 WebViewCore.TextSelectionData data 4785 = new WebViewCore.TextSelectionData(start, end); 4786 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4787 data); 4788 } 4789 4790 /** 4791 * Set the selection to (start, end) in the focused textfield. If start and 4792 * end are out of order, swap them. 4793 * @param start Beginning of selection. 4794 * @param end End of selection. 4795 */ 4796 /* package */ void setSelection(int start, int end) { 4797 if (mWebViewCore != null) { 4798 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4799 } 4800 } 4801 4802 @Override 4803 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4804 InputConnection connection = super.onCreateInputConnection(outAttrs); 4805 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4806 return connection; 4807 } 4808 4809 /** 4810 * Called in response to a message from webkit telling us that the soft 4811 * keyboard should be launched. 4812 */ 4813 private void displaySoftKeyboard(boolean isTextView) { 4814 InputMethodManager imm = (InputMethodManager) 4815 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4816 4817 // bring it back to the default level scale so that user can enter text 4818 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4819 if (zoom) { 4820 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4821 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4822 } 4823 if (isTextView) { 4824 rebuildWebTextView(); 4825 if (inEditingMode()) { 4826 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4827 if (zoom) { 4828 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4829 } 4830 return; 4831 } 4832 } 4833 // Used by plugins and contentEditable. 4834 // Also used if the navigation cache is out of date, and 4835 // does not recognize that a textfield is in focus. In that 4836 // case, use WebView as the targeted view. 4837 // see http://b/issue?id=2457459 4838 imm.showSoftInput(this, 0); 4839 } 4840 4841 // Called by WebKit to instruct the UI to hide the keyboard 4842 private void hideSoftKeyboard() { 4843 InputMethodManager imm = InputMethodManager.peekInstance(); 4844 if (imm != null && (imm.isActive(this) 4845 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4846 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4847 } 4848 } 4849 4850 /* 4851 * This method checks the current focus and cursor and potentially rebuilds 4852 * mWebTextView to have the appropriate properties, such as password, 4853 * multiline, and what text it contains. It also removes it if necessary. 4854 */ 4855 /* package */ void rebuildWebTextView() { 4856 // If the WebView does not have focus, do nothing until it gains focus. 4857 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4858 return; 4859 } 4860 boolean alreadyThere = inEditingMode(); 4861 // inEditingMode can only return true if mWebTextView is non-null, 4862 // so we can safely call remove() if (alreadyThere) 4863 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4864 if (alreadyThere) { 4865 mWebTextView.remove(); 4866 } 4867 return; 4868 } 4869 // At this point, we know we have found an input field, so go ahead 4870 // and create the WebTextView if necessary. 4871 if (mWebTextView == null) { 4872 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4873 // Initialize our generation number. 4874 mTextGeneration = 0; 4875 } 4876 mWebTextView.updateTextSize(); 4877 updateWebTextViewPosition(); 4878 String text = nativeFocusCandidateText(); 4879 int nodePointer = nativeFocusCandidatePointer(); 4880 // This needs to be called before setType, which may call 4881 // requestFormData, and it needs to have the correct nodePointer. 4882 mWebTextView.setNodePointer(nodePointer); 4883 mWebTextView.setType(nativeFocusCandidateType()); 4884 // Gravity needs to be set after setType 4885 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 4886 if (null == text) { 4887 if (DebugFlags.WEB_VIEW) { 4888 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4889 } 4890 text = ""; 4891 } 4892 mWebTextView.setTextAndKeepSelection(text); 4893 InputMethodManager imm = InputMethodManager.peekInstance(); 4894 if (imm != null && imm.isActive(mWebTextView)) { 4895 imm.restartInput(mWebTextView); 4896 mWebTextView.clearComposingText(); 4897 } 4898 if (isFocused()) { 4899 mWebTextView.requestFocus(); 4900 } 4901 } 4902 4903 private void updateWebTextViewPosition() { 4904 Rect visibleRect = new Rect(); 4905 calcOurContentVisibleRect(visibleRect); 4906 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4907 // should be in content coordinates. 4908 Rect bounds = nativeFocusCandidateNodeBounds(); 4909 Rect vBox = contentToViewRect(bounds); 4910 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4911 if (!Rect.intersects(bounds, visibleRect)) { 4912 revealSelection(); 4913 } 4914 updateWebTextViewPadding(); 4915 } 4916 4917 /** 4918 * Update the padding of mWebTextView based on the native textfield/textarea 4919 */ 4920 void updateWebTextViewPadding() { 4921 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4922 if (paddingRect != null) { 4923 // Use contentToViewDimension since these are the dimensions of 4924 // the padding. 4925 mWebTextView.setPadding( 4926 contentToViewDimension(paddingRect.left), 4927 contentToViewDimension(paddingRect.top), 4928 contentToViewDimension(paddingRect.right), 4929 contentToViewDimension(paddingRect.bottom)); 4930 } 4931 } 4932 4933 /** 4934 * Tell webkit to put the cursor on screen. 4935 */ 4936 /* package */ void revealSelection() { 4937 if (mWebViewCore != null) { 4938 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4939 } 4940 } 4941 4942 /** 4943 * Called by WebTextView to find saved form data associated with the 4944 * textfield 4945 * @param name Name of the textfield. 4946 * @param nodePointer Pointer to the node of the textfield, so it can be 4947 * compared to the currently focused textfield when the data is 4948 * retrieved. 4949 * @param autoFillable true if WebKit has determined this field is part of 4950 * a form that can be auto filled. 4951 * @param autoComplete true if the attribute "autocomplete" is set to true 4952 * on the textfield. 4953 */ 4954 /* package */ void requestFormData(String name, int nodePointer, 4955 boolean autoFillable, boolean autoComplete) { 4956 if (mWebViewCore.getSettings().getSaveFormData()) { 4957 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4958 update.arg1 = nodePointer; 4959 RequestFormData updater = new RequestFormData(name, getUrl(), 4960 update, autoFillable, autoComplete); 4961 Thread t = new Thread(updater); 4962 t.start(); 4963 } 4964 } 4965 4966 /** 4967 * Pass a message to find out the <label> associated with the <input> 4968 * identified by nodePointer 4969 * @param framePointer Pointer to the frame containing the <input> node 4970 * @param nodePointer Pointer to the node for which a <label> is desired. 4971 */ 4972 /* package */ void requestLabel(int framePointer, int nodePointer) { 4973 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4974 nodePointer); 4975 } 4976 4977 /* 4978 * This class requests an Adapter for the WebTextView which shows past 4979 * entries stored in the database. It is a Runnable so that it can be done 4980 * in its own thread, without slowing down the UI. 4981 */ 4982 private class RequestFormData implements Runnable { 4983 private String mName; 4984 private String mUrl; 4985 private Message mUpdateMessage; 4986 private boolean mAutoFillable; 4987 private boolean mAutoComplete; 4988 private WebSettings mWebSettings; 4989 4990 public RequestFormData(String name, String url, Message msg, 4991 boolean autoFillable, boolean autoComplete) { 4992 mName = name; 4993 mUrl = WebTextView.urlForAutoCompleteData(url); 4994 mUpdateMessage = msg; 4995 mAutoFillable = autoFillable; 4996 mAutoComplete = autoComplete; 4997 mWebSettings = getSettings(); 4998 } 4999 5000 public void run() { 5001 ArrayList<String> pastEntries = new ArrayList<String>(); 5002 5003 if (mAutoFillable) { 5004 // Note that code inside the adapter click handler in WebTextView depends 5005 // on the AutoFill item being at the top of the drop down list. If you change 5006 // the order, make sure to do it there too! 5007 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5008 pastEntries.add(getResources().getText( 5009 com.android.internal.R.string.autofill_this_form).toString() + 5010 " " + 5011 mAutoFillData.getPreviewString()); 5012 mWebTextView.setAutoFillProfileIsSet(true); 5013 } else { 5014 // There is no autofill profile set up yet, so add an option that 5015 // will invite the user to set their profile up. 5016 pastEntries.add(getResources().getText( 5017 com.android.internal.R.string.setup_autofill).toString()); 5018 mWebTextView.setAutoFillProfileIsSet(false); 5019 } 5020 } 5021 5022 if (mAutoComplete) { 5023 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5024 } 5025 5026 if (pastEntries.size() > 0) { 5027 AutoCompleteAdapter adapter = new 5028 AutoCompleteAdapter(mContext, pastEntries); 5029 mUpdateMessage.obj = adapter; 5030 mUpdateMessage.sendToTarget(); 5031 } 5032 } 5033 } 5034 5035 /** 5036 * Dump the display tree to "/sdcard/displayTree.txt" 5037 * 5038 * @hide debug only 5039 */ 5040 public void dumpDisplayTree() { 5041 nativeDumpDisplayTree(getUrl()); 5042 } 5043 5044 /** 5045 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5046 * "/sdcard/domTree.txt" 5047 * 5048 * @hide debug only 5049 */ 5050 public void dumpDomTree(boolean toFile) { 5051 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5052 } 5053 5054 /** 5055 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5056 * to "/sdcard/renderTree.txt" 5057 * 5058 * @hide debug only 5059 */ 5060 public void dumpRenderTree(boolean toFile) { 5061 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5062 } 5063 5064 /** 5065 * Called by DRT on UI thread, need to proxy to WebCore thread. 5066 * 5067 * @hide debug only 5068 */ 5069 public void useMockDeviceOrientation() { 5070 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5071 } 5072 5073 /** 5074 * Called by DRT on WebCore thread. 5075 * 5076 * @hide debug only 5077 */ 5078 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5079 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5080 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5081 canProvideGamma, gamma); 5082 } 5083 5084 // This is used to determine long press with the center key. Does not 5085 // affect long press with the trackball/touch. 5086 private boolean mGotCenterDown = false; 5087 5088 @Override 5089 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5090 if (mBlockWebkitViewMessages) { 5091 return false; 5092 } 5093 // send complex characters to webkit for use by JS and plugins 5094 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5095 // pass the key to DOM 5096 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5097 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5098 // return true as DOM handles the key 5099 return true; 5100 } 5101 return false; 5102 } 5103 5104 private boolean isEnterActionKey(int keyCode) { 5105 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5106 || keyCode == KeyEvent.KEYCODE_ENTER 5107 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5108 } 5109 5110 @Override 5111 public boolean onKeyDown(int keyCode, KeyEvent event) { 5112 if (DebugFlags.WEB_VIEW) { 5113 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5114 + "keyCode=" + keyCode 5115 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5116 } 5117 if (mBlockWebkitViewMessages) { 5118 return false; 5119 } 5120 5121 // don't implement accelerator keys here; defer to host application 5122 if (event.isCtrlPressed()) { 5123 return false; 5124 } 5125 5126 if (mNativeClass == 0) { 5127 return false; 5128 } 5129 5130 // do this hack up front, so it always works, regardless of touch-mode 5131 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5132 mAutoRedraw = !mAutoRedraw; 5133 if (mAutoRedraw) { 5134 invalidate(); 5135 } 5136 return true; 5137 } 5138 5139 // Bubble up the key event if 5140 // 1. it is a system key; or 5141 // 2. the host application wants to handle it; 5142 if (event.isSystem() 5143 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5144 return false; 5145 } 5146 5147 // accessibility support 5148 if (accessibilityScriptInjected()) { 5149 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5150 // if an accessibility script is injected we delegate to it the key handling. 5151 // this script is a screen reader which is a fully fledged solution for blind 5152 // users to navigate in and interact with web pages. 5153 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5154 return true; 5155 } else { 5156 // Clean up if accessibility was disabled after loading the current URL. 5157 mAccessibilityScriptInjected = false; 5158 } 5159 } else if (mAccessibilityInjector != null) { 5160 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5161 if (mAccessibilityInjector.onKeyEvent(event)) { 5162 // if an accessibility injector is present (no JavaScript enabled or the site 5163 // opts out injecting our JavaScript screen reader) we let it decide whether 5164 // to act on and consume the event. 5165 return true; 5166 } 5167 } else { 5168 // Clean up if accessibility was disabled after loading the current URL. 5169 mAccessibilityInjector = null; 5170 } 5171 } 5172 5173 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5174 if (event.hasNoModifiers()) { 5175 pageUp(false); 5176 return true; 5177 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5178 pageUp(true); 5179 return true; 5180 } 5181 } 5182 5183 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5184 if (event.hasNoModifiers()) { 5185 pageDown(false); 5186 return true; 5187 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5188 pageDown(true); 5189 return true; 5190 } 5191 } 5192 5193 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5194 pageUp(true); 5195 return true; 5196 } 5197 5198 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5199 pageDown(true); 5200 return true; 5201 } 5202 5203 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5204 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5205 switchOutDrawHistory(); 5206 if (nativePageShouldHandleShiftAndArrows()) { 5207 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5208 return true; 5209 } 5210 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5211 switch (keyCode) { 5212 case KeyEvent.KEYCODE_DPAD_UP: 5213 pageUp(true); 5214 return true; 5215 case KeyEvent.KEYCODE_DPAD_DOWN: 5216 pageDown(true); 5217 return true; 5218 case KeyEvent.KEYCODE_DPAD_LEFT: 5219 nativeClearCursor(); // start next trackball movement from page edge 5220 return pinScrollTo(0, mScrollY, true, 0); 5221 case KeyEvent.KEYCODE_DPAD_RIGHT: 5222 nativeClearCursor(); // start next trackball movement from page edge 5223 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5224 } 5225 } 5226 if (mSelectingText) { 5227 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5228 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5229 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5230 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5231 int multiplier = event.getRepeatCount() + 1; 5232 moveSelection(xRate * multiplier, yRate * multiplier); 5233 return true; 5234 } 5235 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5236 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5237 return true; 5238 } 5239 // Bubble up the key event as WebView doesn't handle it 5240 return false; 5241 } 5242 5243 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5244 switchOutDrawHistory(); 5245 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5246 || nativeCursorWantsKeyEvents(); 5247 if (event.getRepeatCount() == 0) { 5248 if (mSelectingText) { 5249 return true; // discard press if copy in progress 5250 } 5251 mGotCenterDown = true; 5252 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5253 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5254 if (!wantsKeyEvents) return true; 5255 } 5256 // Bubble up the key event as WebView doesn't handle it 5257 if (!wantsKeyEvents) return false; 5258 } 5259 5260 if (getSettings().getNavDump()) { 5261 switch (keyCode) { 5262 case KeyEvent.KEYCODE_4: 5263 dumpDisplayTree(); 5264 break; 5265 case KeyEvent.KEYCODE_5: 5266 case KeyEvent.KEYCODE_6: 5267 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5268 break; 5269 case KeyEvent.KEYCODE_7: 5270 case KeyEvent.KEYCODE_8: 5271 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5272 break; 5273 } 5274 } 5275 5276 if (nativeCursorIsTextInput()) { 5277 // This message will put the node in focus, for the DOM's notion 5278 // of focus. 5279 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5280 nativeCursorNodePointer()); 5281 // This will bring up the WebTextView and put it in focus, for 5282 // our view system's notion of focus 5283 rebuildWebTextView(); 5284 // Now we need to pass the event to it 5285 if (inEditingMode()) { 5286 mWebTextView.setDefaultSelection(); 5287 return mWebTextView.dispatchKeyEvent(event); 5288 } 5289 } else if (nativeHasFocusNode()) { 5290 // In this case, the cursor is not on a text input, but the focus 5291 // might be. Check it, and if so, hand over to the WebTextView. 5292 rebuildWebTextView(); 5293 if (inEditingMode()) { 5294 mWebTextView.setDefaultSelection(); 5295 return mWebTextView.dispatchKeyEvent(event); 5296 } 5297 } 5298 5299 // TODO: should we pass all the keys to DOM or check the meta tag 5300 if (nativeCursorWantsKeyEvents() || true) { 5301 // pass the key to DOM 5302 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5303 // return true as DOM handles the key 5304 return true; 5305 } 5306 5307 // Bubble up the key event as WebView doesn't handle it 5308 return false; 5309 } 5310 5311 @Override 5312 public boolean onKeyUp(int keyCode, KeyEvent event) { 5313 if (DebugFlags.WEB_VIEW) { 5314 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5315 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5316 } 5317 if (mBlockWebkitViewMessages) { 5318 return false; 5319 } 5320 5321 if (mNativeClass == 0) { 5322 return false; 5323 } 5324 5325 // special CALL handling when cursor node's href is "tel:XXX" 5326 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5327 String text = nativeCursorText(); 5328 if (!nativeCursorIsTextInput() && text != null 5329 && text.startsWith(SCHEME_TEL)) { 5330 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5331 getContext().startActivity(intent); 5332 return true; 5333 } 5334 } 5335 5336 // Bubble up the key event if 5337 // 1. it is a system key; or 5338 // 2. the host application wants to handle it; 5339 if (event.isSystem() 5340 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5341 return false; 5342 } 5343 5344 // accessibility support 5345 if (accessibilityScriptInjected()) { 5346 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5347 // if an accessibility script is injected we delegate to it the key handling. 5348 // this script is a screen reader which is a fully fledged solution for blind 5349 // users to navigate in and interact with web pages. 5350 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5351 return true; 5352 } else { 5353 // Clean up if accessibility was disabled after loading the current URL. 5354 mAccessibilityScriptInjected = false; 5355 } 5356 } else if (mAccessibilityInjector != null) { 5357 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5358 if (mAccessibilityInjector.onKeyEvent(event)) { 5359 // if an accessibility injector is present (no JavaScript enabled or the site 5360 // opts out injecting our JavaScript screen reader) we let it decide whether to 5361 // act on and consume the event. 5362 return true; 5363 } 5364 } else { 5365 // Clean up if accessibility was disabled after loading the current URL. 5366 mAccessibilityInjector = null; 5367 } 5368 } 5369 5370 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5371 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5372 if (nativePageShouldHandleShiftAndArrows()) { 5373 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5374 return true; 5375 } 5376 // always handle the navigation keys in the UI thread 5377 // Bubble up the key event as WebView doesn't handle it 5378 return false; 5379 } 5380 5381 if (isEnterActionKey(keyCode)) { 5382 // remove the long press message first 5383 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5384 mGotCenterDown = false; 5385 5386 if (mSelectingText) { 5387 if (mExtendSelection) { 5388 copySelection(); 5389 selectionDone(); 5390 } else { 5391 mExtendSelection = true; 5392 nativeSetExtendSelection(); 5393 invalidate(); // draw the i-beam instead of the arrow 5394 } 5395 return true; // discard press if copy in progress 5396 } 5397 5398 // perform the single click 5399 Rect visibleRect = sendOurVisibleRect(); 5400 // Note that sendOurVisibleRect calls viewToContent, so the 5401 // coordinates should be in content coordinates. 5402 if (!nativeCursorIntersects(visibleRect)) { 5403 return false; 5404 } 5405 WebViewCore.CursorData data = cursorData(); 5406 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5407 playSoundEffect(SoundEffectConstants.CLICK); 5408 if (nativeCursorIsTextInput()) { 5409 rebuildWebTextView(); 5410 centerKeyPressOnTextField(); 5411 if (inEditingMode()) { 5412 mWebTextView.setDefaultSelection(); 5413 } 5414 return true; 5415 } 5416 clearTextEntry(); 5417 nativeShowCursorTimed(); 5418 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5419 return true; 5420 } 5421 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5422 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5423 nativeCursorNodePointer()); 5424 return true; 5425 } 5426 } 5427 5428 // TODO: should we pass all the keys to DOM or check the meta tag 5429 if (nativeCursorWantsKeyEvents() || true) { 5430 // pass the key to DOM 5431 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5432 // return true as DOM handles the key 5433 return true; 5434 } 5435 5436 // Bubble up the key event as WebView doesn't handle it 5437 return false; 5438 } 5439 5440 /* 5441 * Enter selecting text mode, and see if CAB should be shown. 5442 * Returns true if the WebView is now in 5443 * selecting text mode (including if it was already in that mode, and this 5444 * method did nothing). 5445 */ 5446 private boolean setUpSelect(boolean selectWord, int x, int y) { 5447 if (0 == mNativeClass) return false; // client isn't initialized 5448 if (inFullScreenMode()) return false; 5449 if (mSelectingText) return true; 5450 nativeResetSelection(); 5451 if (selectWord && !nativeWordSelection(x, y)) { 5452 selectionDone(); 5453 return false; 5454 } 5455 mSelectCallback = new SelectActionModeCallback(); 5456 mSelectCallback.setWebView(this); 5457 if (startActionMode(mSelectCallback) == null) { 5458 // There is no ActionMode, so do not allow the user to modify a 5459 // selection. 5460 selectionDone(); 5461 return false; 5462 } 5463 mExtendSelection = false; 5464 mSelectingText = mDrawSelectionPointer = true; 5465 if (DEBUG_TEXT_HANDLES) { 5466 // Debugging text handles requires running in software mode 5467 setLayerType(LAYER_TYPE_SOFTWARE, null); 5468 } 5469 // don't let the picture change during text selection 5470 WebViewCore.pauseUpdatePicture(mWebViewCore); 5471 if (nativeHasCursorNode()) { 5472 Rect rect = nativeCursorNodeBounds(); 5473 mSelectX = contentToViewX(rect.left); 5474 mSelectY = contentToViewY(rect.top); 5475 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5476 mSelectX = mScrollX + mLastTouchX; 5477 mSelectY = mScrollY + mLastTouchY; 5478 } else { 5479 mSelectX = mScrollX + getViewWidth() / 2; 5480 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5481 } 5482 nativeHideCursor(); 5483 mMinAutoScrollX = 0; 5484 mMaxAutoScrollX = getViewWidth(); 5485 mMinAutoScrollY = 0; 5486 mMaxAutoScrollY = getViewHeightWithTitle(); 5487 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 5488 viewToContentY(mSelectY), mScrollingLayerRect, 5489 mScrollingLayerBounds); 5490 if (mScrollingLayer != 0) { 5491 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5492 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5493 contentToViewX(mScrollingLayerBounds.left)); 5494 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5495 contentToViewX(mScrollingLayerBounds.right)); 5496 } 5497 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5498 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5499 contentToViewY(mScrollingLayerBounds.top)); 5500 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5501 contentToViewY(mScrollingLayerBounds.bottom)); 5502 } 5503 } 5504 mMinAutoScrollX += SELECT_SCROLL; 5505 mMaxAutoScrollX -= SELECT_SCROLL; 5506 mMinAutoScrollY += SELECT_SCROLL; 5507 mMaxAutoScrollY -= SELECT_SCROLL; 5508 return true; 5509 } 5510 5511 /** 5512 * Use this method to put the WebView into text selection mode. 5513 * Do not rely on this functionality; it will be deprecated in the future. 5514 * @deprecated This method is now obsolete. 5515 */ 5516 @Deprecated 5517 public void emulateShiftHeld() { 5518 checkThread(); 5519 setUpSelect(false, 0, 0); 5520 } 5521 5522 /** 5523 * Select all of the text in this WebView. 5524 * 5525 * @hide pending API council approval. 5526 */ 5527 public void selectAll() { 5528 if (0 == mNativeClass) return; // client isn't initialized 5529 if (inFullScreenMode()) return; 5530 if (!mSelectingText) { 5531 // retrieve a point somewhere within the text 5532 Point select = nativeSelectableText(); 5533 if (!selectText(select.x, select.y)) return; 5534 } 5535 nativeSelectAll(); 5536 mDrawSelectionPointer = false; 5537 mExtendSelection = true; 5538 invalidate(); 5539 } 5540 5541 /** 5542 * Called when the selection has been removed. 5543 */ 5544 void selectionDone() { 5545 if (mSelectingText) { 5546 mSelectingText = false; 5547 if (DEBUG_TEXT_HANDLES) { 5548 // Debugging text handles required running in software mode, set 5549 // back to default now 5550 setLayerType(LAYER_TYPE_NONE, null); 5551 } 5552 // finish is idempotent, so this is fine even if selectionDone was 5553 // called by mSelectCallback.onDestroyActionMode 5554 mSelectCallback.finish(); 5555 mSelectCallback = null; 5556 WebViewCore.resumePriority(); 5557 WebViewCore.resumeUpdatePicture(mWebViewCore); 5558 invalidate(); // redraw without selection 5559 mAutoScrollX = 0; 5560 mAutoScrollY = 0; 5561 mSentAutoScrollMessage = false; 5562 } 5563 } 5564 5565 /** 5566 * Copy the selection to the clipboard 5567 * 5568 * @hide pending API council approval. 5569 */ 5570 public boolean copySelection() { 5571 boolean copiedSomething = false; 5572 String selection = getSelection(); 5573 if (selection != null && selection != "") { 5574 if (DebugFlags.WEB_VIEW) { 5575 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5576 } 5577 Toast.makeText(mContext 5578 , com.android.internal.R.string.text_copied 5579 , Toast.LENGTH_SHORT).show(); 5580 copiedSomething = true; 5581 ClipboardManager cm = (ClipboardManager)getContext() 5582 .getSystemService(Context.CLIPBOARD_SERVICE); 5583 cm.setText(selection); 5584 } 5585 invalidate(); // remove selection region and pointer 5586 return copiedSomething; 5587 } 5588 5589 /** 5590 * @hide pending API Council approval. 5591 */ 5592 public SearchBox getSearchBox() { 5593 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5594 return null; 5595 } 5596 return mWebViewCore.getBrowserFrame().getSearchBox(); 5597 } 5598 5599 /** 5600 * Returns the currently highlighted text as a string. 5601 */ 5602 String getSelection() { 5603 if (mNativeClass == 0) return ""; 5604 return nativeGetSelection(); 5605 } 5606 5607 @Override 5608 protected void onAttachedToWindow() { 5609 super.onAttachedToWindow(); 5610 if (hasWindowFocus()) setActive(true); 5611 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5612 if (mGlobalLayoutListener == null) { 5613 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5614 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5615 } 5616 if (mScrollChangedListener == null) { 5617 mScrollChangedListener = new InnerScrollChangedListener(); 5618 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5619 } 5620 5621 addAccessibilityApisToJavaScript(); 5622 5623 mTouchEventQueue.reset(); 5624 } 5625 5626 @Override 5627 protected void onDetachedFromWindow() { 5628 clearHelpers(); 5629 mZoomManager.dismissZoomPicker(); 5630 if (hasWindowFocus()) setActive(false); 5631 5632 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5633 if (mGlobalLayoutListener != null) { 5634 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5635 mGlobalLayoutListener = null; 5636 } 5637 if (mScrollChangedListener != null) { 5638 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5639 mScrollChangedListener = null; 5640 } 5641 5642 removeAccessibilityApisFromJavaScript(); 5643 5644 super.onDetachedFromWindow(); 5645 } 5646 5647 @Override 5648 protected void onVisibilityChanged(View changedView, int visibility) { 5649 super.onVisibilityChanged(changedView, visibility); 5650 // The zoomManager may be null if the webview is created from XML that 5651 // specifies the view's visibility param as not visible (see http://b/2794841) 5652 if (visibility != View.VISIBLE && mZoomManager != null) { 5653 mZoomManager.dismissZoomPicker(); 5654 } 5655 updateDrawingState(); 5656 } 5657 5658 /** 5659 * @deprecated WebView no longer needs to implement 5660 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5661 */ 5662 @Deprecated 5663 public void onChildViewAdded(View parent, View child) {} 5664 5665 /** 5666 * @deprecated WebView no longer needs to implement 5667 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5668 */ 5669 @Deprecated 5670 public void onChildViewRemoved(View p, View child) {} 5671 5672 /** 5673 * @deprecated WebView should not have implemented 5674 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5675 */ 5676 @Deprecated 5677 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5678 } 5679 5680 void setActive(boolean active) { 5681 if (active) { 5682 if (hasFocus()) { 5683 // If our window regained focus, and we have focus, then begin 5684 // drawing the cursor ring 5685 mDrawCursorRing = !inEditingMode(); 5686 setFocusControllerActive(true); 5687 } else { 5688 mDrawCursorRing = false; 5689 if (!inEditingMode()) { 5690 // If our window gained focus, but we do not have it, do not 5691 // draw the cursor ring. 5692 setFocusControllerActive(false); 5693 } 5694 // We do not call recordButtons here because we assume 5695 // that when we lost focus, or window focus, it got called with 5696 // false for the first parameter 5697 } 5698 } else { 5699 if (!mZoomManager.isZoomPickerVisible()) { 5700 /* 5701 * The external zoom controls come in their own window, so our 5702 * window loses focus. Our policy is to not draw the cursor ring 5703 * if our window is not focused, but this is an exception since 5704 * the user can still navigate the web page with the zoom 5705 * controls showing. 5706 */ 5707 mDrawCursorRing = false; 5708 } 5709 mKeysPressed.clear(); 5710 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5711 mTouchMode = TOUCH_DONE_MODE; 5712 setFocusControllerActive(false); 5713 } 5714 invalidate(); 5715 } 5716 5717 // To avoid drawing the cursor ring, and remove the TextView when our window 5718 // loses focus. 5719 @Override 5720 public void onWindowFocusChanged(boolean hasWindowFocus) { 5721 setActive(hasWindowFocus); 5722 if (hasWindowFocus) { 5723 JWebCoreJavaBridge.setActiveWebView(this); 5724 if (mPictureUpdatePausedForFocusChange) { 5725 WebViewCore.resumeUpdatePicture(mWebViewCore); 5726 mPictureUpdatePausedForFocusChange = false; 5727 } 5728 } else { 5729 JWebCoreJavaBridge.removeActiveWebView(this); 5730 final WebSettings settings = getSettings(); 5731 if (settings != null && settings.enableSmoothTransition() && 5732 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5733 WebViewCore.pauseUpdatePicture(mWebViewCore); 5734 mPictureUpdatePausedForFocusChange = true; 5735 } 5736 } 5737 super.onWindowFocusChanged(hasWindowFocus); 5738 } 5739 5740 /* 5741 * Pass a message to WebCore Thread, telling the WebCore::Page's 5742 * FocusController to be "inactive" so that it will 5743 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5744 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5745 */ 5746 /* package */ void setFocusControllerActive(boolean active) { 5747 if (mWebViewCore == null) return; 5748 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5749 // Need to send this message after the document regains focus. 5750 if (active && mListBoxMessage != null) { 5751 mWebViewCore.sendMessage(mListBoxMessage); 5752 mListBoxMessage = null; 5753 } 5754 } 5755 5756 @Override 5757 protected void onFocusChanged(boolean focused, int direction, 5758 Rect previouslyFocusedRect) { 5759 if (DebugFlags.WEB_VIEW) { 5760 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5761 } 5762 if (focused) { 5763 // When we regain focus, if we have window focus, resume drawing 5764 // the cursor ring 5765 if (hasWindowFocus()) { 5766 mDrawCursorRing = !inEditingMode(); 5767 setFocusControllerActive(true); 5768 //} else { 5769 // The WebView has gained focus while we do not have 5770 // windowfocus. When our window lost focus, we should have 5771 // called recordButtons(false...) 5772 } 5773 } else { 5774 // When we lost focus, unless focus went to the TextView (which is 5775 // true if we are in editing mode), stop drawing the cursor ring. 5776 mDrawCursorRing = false; 5777 if (!inEditingMode()) { 5778 setFocusControllerActive(false); 5779 } 5780 mKeysPressed.clear(); 5781 } 5782 5783 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5784 } 5785 5786 void setGLRectViewport() { 5787 // Use the getGlobalVisibleRect() to get the intersection among the parents 5788 // visible == false means we're clipped - send a null rect down to indicate that 5789 // we should not draw 5790 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5791 if (visible) { 5792 // Then need to invert the Y axis, just for GL 5793 View rootView = getRootView(); 5794 int rootViewHeight = rootView.getHeight(); 5795 mViewRectViewport.set(mGLRectViewport); 5796 int savedWebViewBottom = mGLRectViewport.bottom; 5797 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5798 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5799 mGLViewportEmpty = false; 5800 } else { 5801 mGLViewportEmpty = true; 5802 } 5803 calcOurContentVisibleRectF(mVisibleContentRect); 5804 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5805 mGLViewportEmpty ? null : mViewRectViewport, mVisibleContentRect); 5806 } 5807 5808 /** 5809 * @hide 5810 */ 5811 @Override 5812 protected boolean setFrame(int left, int top, int right, int bottom) { 5813 boolean changed = super.setFrame(left, top, right, bottom); 5814 if (!changed && mHeightCanMeasure) { 5815 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5816 // in WebViewCore after we get the first layout. We do call 5817 // requestLayout() when we get contentSizeChanged(). But the View 5818 // system won't call onSizeChanged if the dimension is not changed. 5819 // In this case, we need to call sendViewSizeZoom() explicitly to 5820 // notify the WebKit about the new dimensions. 5821 sendViewSizeZoom(false); 5822 } 5823 setGLRectViewport(); 5824 return changed; 5825 } 5826 5827 @Override 5828 protected void onSizeChanged(int w, int h, int ow, int oh) { 5829 super.onSizeChanged(w, h, ow, oh); 5830 5831 // adjust the max viewport width depending on the view dimensions. This 5832 // is to ensure the scaling is not going insane. So do not shrink it if 5833 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5834 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5835 if (newMaxViewportWidth > sMaxViewportWidth) { 5836 sMaxViewportWidth = newMaxViewportWidth; 5837 } 5838 5839 mZoomManager.onSizeChanged(w, h, ow, oh); 5840 5841 if (mLoadedPicture != null && mDelaySetPicture == null) { 5842 // Size changes normally result in a new picture 5843 // Re-set the loaded picture to simulate that 5844 // However, do not update the base layer as that hasn't changed 5845 setNewPicture(mLoadedPicture, false); 5846 } 5847 } 5848 5849 @Override 5850 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5851 super.onScrollChanged(l, t, oldl, oldt); 5852 if (!mInOverScrollMode) { 5853 sendOurVisibleRect(); 5854 // update WebKit if visible title bar height changed. The logic is same 5855 // as getVisibleTitleHeightImpl. 5856 int titleHeight = getTitleHeight(); 5857 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5858 sendViewSizeZoom(false); 5859 } 5860 } 5861 } 5862 5863 @Override 5864 public boolean dispatchKeyEvent(KeyEvent event) { 5865 switch (event.getAction()) { 5866 case KeyEvent.ACTION_DOWN: 5867 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5868 break; 5869 case KeyEvent.ACTION_MULTIPLE: 5870 // Always accept the action. 5871 break; 5872 case KeyEvent.ACTION_UP: 5873 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5874 if (location == -1) { 5875 // We did not receive the key down for this key, so do not 5876 // handle the key up. 5877 return false; 5878 } else { 5879 // We did receive the key down. Handle the key up, and 5880 // remove it from our pressed keys. 5881 mKeysPressed.remove(location); 5882 } 5883 break; 5884 default: 5885 // Accept the action. This should not happen, unless a new 5886 // action is added to KeyEvent. 5887 break; 5888 } 5889 if (inEditingMode() && mWebTextView.isFocused()) { 5890 // Ensure that the WebTextView gets the event, even if it does 5891 // not currently have a bounds. 5892 return mWebTextView.dispatchKeyEvent(event); 5893 } else { 5894 return super.dispatchKeyEvent(event); 5895 } 5896 } 5897 5898 /* 5899 * Here is the snap align logic: 5900 * 1. If it starts nearly horizontally or vertically, snap align; 5901 * 2. If there is a dramitic direction change, let it go; 5902 * 5903 * Adjustable parameters. Angle is the radians on a unit circle, limited 5904 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5905 */ 5906 private static final float HSLOPE_TO_START_SNAP = .25f; 5907 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5908 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5909 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5910 /* 5911 * These values are used to influence the average angle when entering 5912 * snap mode. If is is the first movement entering snap, we set the average 5913 * to the appropriate ideal. If the user is entering into snap after the 5914 * first movement, then we average the average angle with these values. 5915 */ 5916 private static final float ANGLE_VERT = 2f; 5917 private static final float ANGLE_HORIZ = 0f; 5918 /* 5919 * The modified moving average weight. 5920 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5921 */ 5922 private static final float MMA_WEIGHT_N = 5; 5923 5924 private boolean hitFocusedPlugin(int contentX, int contentY) { 5925 if (DebugFlags.WEB_VIEW) { 5926 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5927 Rect r = nativeFocusNodeBounds(); 5928 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5929 + ", " + r.right + ", " + r.bottom + ")"); 5930 } 5931 return nativeFocusIsPlugin() 5932 && nativeFocusNodeBounds().contains(contentX, contentY); 5933 } 5934 5935 private boolean shouldForwardTouchEvent() { 5936 if (mFullScreenHolder != null) return true; 5937 if (mBlockWebkitViewMessages) return false; 5938 return mForwardTouchEvents 5939 && !mSelectingText 5940 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5941 && mPreventDefault != PREVENT_DEFAULT_NO; 5942 } 5943 5944 private boolean inFullScreenMode() { 5945 return mFullScreenHolder != null; 5946 } 5947 5948 private void dismissFullScreenMode() { 5949 if (inFullScreenMode()) { 5950 mFullScreenHolder.hide(); 5951 mFullScreenHolder = null; 5952 } 5953 } 5954 5955 void onPinchToZoomAnimationStart() { 5956 // cancel the single touch handling 5957 cancelTouch(); 5958 onZoomAnimationStart(); 5959 } 5960 5961 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5962 onZoomAnimationEnd(); 5963 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5964 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5965 // as it may trigger the unwanted fling. 5966 mTouchMode = TOUCH_PINCH_DRAG; 5967 mConfirmMove = true; 5968 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5969 } 5970 5971 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5972 // layer is found. 5973 private void startScrollingLayer(float x, float y) { 5974 int contentX = viewToContentX((int) x + mScrollX); 5975 int contentY = viewToContentY((int) y + mScrollY); 5976 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5977 mScrollingLayerRect, mScrollingLayerBounds); 5978 if (mScrollingLayer != 0) { 5979 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5980 } 5981 } 5982 5983 // 1/(density * density) used to compute the distance between points. 5984 // Computed in init(). 5985 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5986 5987 // The distance between two points reported in onTouchEvent scaled by the 5988 // density of the screen. 5989 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5990 5991 @Override 5992 public boolean onHoverEvent(MotionEvent event) { 5993 if (mNativeClass == 0) { 5994 return false; 5995 } 5996 WebViewCore.CursorData data = cursorDataNoPosition(); 5997 data.mX = viewToContentX((int) event.getX() + mScrollX); 5998 data.mY = viewToContentY((int) event.getY() + mScrollY); 5999 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6000 return true; 6001 } 6002 6003 @Override 6004 public boolean onTouchEvent(MotionEvent ev) { 6005 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6006 return false; 6007 } 6008 6009 if (DebugFlags.WEB_VIEW) { 6010 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6011 + " mTouchMode=" + mTouchMode 6012 + " numPointers=" + ev.getPointerCount()); 6013 } 6014 6015 // If WebKit wasn't interested in this multitouch gesture, enqueue 6016 // the event for handling directly rather than making the round trip 6017 // to WebKit and back. 6018 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6019 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6020 } else { 6021 mTouchEventQueue.enqueueTouchEvent(ev); 6022 } 6023 6024 // Since all events are handled asynchronously, we always want the gesture stream. 6025 return true; 6026 } 6027 6028 private float calculateDragAngle(int dx, int dy) { 6029 dx = Math.abs(dx); 6030 dy = Math.abs(dy); 6031 return (float) Math.atan2(dy, dx); 6032 } 6033 6034 /* 6035 * Common code for single touch and multi-touch. 6036 * (x, y) denotes current focus point, which is the touch point for single touch 6037 * and the middle point for multi-touch. 6038 */ 6039 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6040 long eventTime = ev.getEventTime(); 6041 6042 // Due to the touch screen edge effect, a touch closer to the edge 6043 // always snapped to the edge. As getViewWidth() can be different from 6044 // getWidth() due to the scrollbar, adjusting the point to match 6045 // getViewWidth(). Same applied to the height. 6046 x = Math.min(x, getViewWidth() - 1); 6047 y = Math.min(y, getViewHeightWithTitle() - 1); 6048 6049 int deltaX = mLastTouchX - x; 6050 int deltaY = mLastTouchY - y; 6051 int contentX = viewToContentX(x + mScrollX); 6052 int contentY = viewToContentY(y + mScrollY); 6053 6054 switch (action) { 6055 case MotionEvent.ACTION_DOWN: { 6056 mPreventDefault = PREVENT_DEFAULT_NO; 6057 mConfirmMove = false; 6058 mInitialHitTestResult = null; 6059 if (!mScroller.isFinished()) { 6060 // stop the current scroll animation, but if this is 6061 // the start of a fling, allow it to add to the current 6062 // fling's velocity 6063 mScroller.abortAnimation(); 6064 mTouchMode = TOUCH_DRAG_START_MODE; 6065 mConfirmMove = true; 6066 nativeSetIsScrolling(false); 6067 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6068 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6069 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6070 removeTouchHighlight(); 6071 } 6072 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6073 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6074 } else { 6075 // commit the short press action for the previous tap 6076 doShortPress(); 6077 mTouchMode = TOUCH_INIT_MODE; 6078 mDeferTouchProcess = !mBlockWebkitViewMessages 6079 && (!inFullScreenMode() && mForwardTouchEvents) 6080 ? hitFocusedPlugin(contentX, contentY) 6081 : false; 6082 } 6083 } else { // the normal case 6084 mTouchMode = TOUCH_INIT_MODE; 6085 mDeferTouchProcess = !mBlockWebkitViewMessages 6086 && (!inFullScreenMode() && mForwardTouchEvents) 6087 ? hitFocusedPlugin(contentX, contentY) 6088 : false; 6089 if (!mBlockWebkitViewMessages) { 6090 mWebViewCore.sendMessage( 6091 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6092 } 6093 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6094 TouchHighlightData data = new TouchHighlightData(); 6095 data.mX = contentX; 6096 data.mY = contentY; 6097 data.mNativeLayerRect = new Rect(); 6098 data.mNativeLayer = nativeScrollableLayer( 6099 contentX, contentY, data.mNativeLayerRect, null); 6100 data.mSlop = viewToContentDimension(mNavSlop); 6101 mTouchHighlightRegion.setEmpty(); 6102 if (!mBlockWebkitViewMessages) { 6103 mTouchHighlightRequested = System.currentTimeMillis(); 6104 mWebViewCore.sendMessageAtFrontOfQueue( 6105 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data); 6106 } 6107 if (DEBUG_TOUCH_HIGHLIGHT) { 6108 if (getSettings().getNavDump()) { 6109 mTouchHighlightX = (int) x + mScrollX; 6110 mTouchHighlightY = (int) y + mScrollY; 6111 mPrivateHandler.postDelayed(new Runnable() { 6112 public void run() { 6113 mTouchHighlightX = mTouchHighlightY = 0; 6114 invalidate(); 6115 } 6116 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6117 } 6118 } 6119 } 6120 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6121 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6122 (eventTime - mLastTouchUpTime), eventTime); 6123 } 6124 if (mSelectingText) { 6125 mDrawSelectionPointer = false; 6126 mSelectionStarted = nativeStartSelection(contentX, contentY); 6127 if (DebugFlags.WEB_VIEW) { 6128 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6129 } 6130 invalidate(); 6131 } 6132 } 6133 // Trigger the link 6134 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6135 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6136 mPrivateHandler.sendEmptyMessageDelayed( 6137 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6138 mPrivateHandler.sendEmptyMessageDelayed( 6139 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6140 if (inFullScreenMode() || mDeferTouchProcess) { 6141 mPreventDefault = PREVENT_DEFAULT_YES; 6142 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6143 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6144 } else { 6145 mPreventDefault = PREVENT_DEFAULT_NO; 6146 } 6147 // pass the touch events from UI thread to WebCore thread 6148 if (shouldForwardTouchEvent()) { 6149 TouchEventData ted = new TouchEventData(); 6150 ted.mAction = action; 6151 ted.mIds = new int[1]; 6152 ted.mIds[0] = ev.getPointerId(0); 6153 ted.mPoints = new Point[1]; 6154 ted.mPoints[0] = new Point(contentX, contentY); 6155 ted.mPointsInView = new Point[1]; 6156 ted.mPointsInView[0] = new Point(x, y); 6157 ted.mMetaState = ev.getMetaState(); 6158 ted.mReprocess = mDeferTouchProcess; 6159 ted.mNativeLayer = nativeScrollableLayer( 6160 contentX, contentY, ted.mNativeLayerRect, null); 6161 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6162 mTouchEventQueue.preQueueTouchEventData(ted); 6163 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6164 if (mDeferTouchProcess) { 6165 // still needs to set them for compute deltaX/Y 6166 mLastTouchX = x; 6167 mLastTouchY = y; 6168 break; 6169 } 6170 if (!inFullScreenMode()) { 6171 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6172 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6173 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6174 action, 0), TAP_TIMEOUT); 6175 } 6176 } 6177 } 6178 startTouch(x, y, eventTime); 6179 break; 6180 } 6181 case MotionEvent.ACTION_MOVE: { 6182 boolean firstMove = false; 6183 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6184 >= mTouchSlopSquare) { 6185 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6186 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6187 mConfirmMove = true; 6188 firstMove = true; 6189 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6190 mTouchMode = TOUCH_INIT_MODE; 6191 } 6192 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6193 removeTouchHighlight(); 6194 } 6195 } 6196 // pass the touch events from UI thread to WebCore thread 6197 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6198 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6199 TouchEventData ted = new TouchEventData(); 6200 ted.mAction = action; 6201 ted.mIds = new int[1]; 6202 ted.mIds[0] = ev.getPointerId(0); 6203 ted.mPoints = new Point[1]; 6204 ted.mPoints[0] = new Point(contentX, contentY); 6205 ted.mPointsInView = new Point[1]; 6206 ted.mPointsInView[0] = new Point(x, y); 6207 ted.mMetaState = ev.getMetaState(); 6208 ted.mReprocess = mDeferTouchProcess; 6209 ted.mNativeLayer = mScrollingLayer; 6210 ted.mNativeLayerRect.set(mScrollingLayerRect); 6211 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6212 mTouchEventQueue.preQueueTouchEventData(ted); 6213 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6214 mLastSentTouchTime = eventTime; 6215 if (mDeferTouchProcess) { 6216 break; 6217 } 6218 if (firstMove && !inFullScreenMode()) { 6219 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6220 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6221 action, 0), TAP_TIMEOUT); 6222 } 6223 } 6224 if (mTouchMode == TOUCH_DONE_MODE 6225 || mPreventDefault == PREVENT_DEFAULT_YES) { 6226 // no dragging during scroll zoom animation, or when prevent 6227 // default is yes 6228 break; 6229 } 6230 if (mVelocityTracker == null) { 6231 Log.e(LOGTAG, "Got null mVelocityTracker when " 6232 + "mPreventDefault = " + mPreventDefault 6233 + " mDeferTouchProcess = " + mDeferTouchProcess 6234 + " mTouchMode = " + mTouchMode); 6235 } else { 6236 mVelocityTracker.addMovement(ev); 6237 } 6238 if (mSelectingText && mSelectionStarted) { 6239 if (DebugFlags.WEB_VIEW) { 6240 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6241 } 6242 ViewParent parent = getParent(); 6243 if (parent != null) { 6244 parent.requestDisallowInterceptTouchEvent(true); 6245 } 6246 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6247 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6248 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6249 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6250 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6251 && !mSentAutoScrollMessage) { 6252 mSentAutoScrollMessage = true; 6253 mPrivateHandler.sendEmptyMessageDelayed( 6254 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6255 } 6256 if (deltaX != 0 || deltaY != 0) { 6257 nativeExtendSelection(contentX, contentY); 6258 invalidate(); 6259 } 6260 break; 6261 } 6262 6263 if (mTouchMode != TOUCH_DRAG_MODE && 6264 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6265 6266 if (!mConfirmMove) { 6267 break; 6268 } 6269 6270 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6271 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6272 // track mLastTouchTime as we may need to do fling at 6273 // ACTION_UP 6274 mLastTouchTime = eventTime; 6275 break; 6276 } 6277 6278 // Only lock dragging to one axis if we don't have a scale in progress. 6279 // Scaling implies free-roaming movement. Note this is only ever a question 6280 // if mZoomManager.supportsPanDuringZoom() is true. 6281 final ScaleGestureDetector detector = 6282 mZoomManager.getMultiTouchGestureDetector(); 6283 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6284 if (detector == null || !detector.isInProgress()) { 6285 // if it starts nearly horizontal or vertical, enforce it 6286 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6287 mSnapScrollMode = SNAP_X; 6288 mSnapPositive = deltaX > 0; 6289 mAverageAngle = ANGLE_HORIZ; 6290 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6291 mSnapScrollMode = SNAP_Y; 6292 mSnapPositive = deltaY > 0; 6293 mAverageAngle = ANGLE_VERT; 6294 } 6295 } 6296 6297 mTouchMode = TOUCH_DRAG_MODE; 6298 mLastTouchX = x; 6299 mLastTouchY = y; 6300 deltaX = 0; 6301 deltaY = 0; 6302 6303 startScrollingLayer(x, y); 6304 startDrag(); 6305 } 6306 6307 // do pan 6308 boolean done = false; 6309 boolean keepScrollBarsVisible = false; 6310 if (deltaX == 0 && deltaY == 0) { 6311 keepScrollBarsVisible = done = true; 6312 } else { 6313 mAverageAngle += 6314 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6315 / MMA_WEIGHT_N; 6316 if (mSnapScrollMode != SNAP_NONE) { 6317 if (mSnapScrollMode == SNAP_Y) { 6318 // radical change means getting out of snap mode 6319 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6320 mSnapScrollMode = SNAP_NONE; 6321 } 6322 } 6323 if (mSnapScrollMode == SNAP_X) { 6324 // radical change means getting out of snap mode 6325 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6326 mSnapScrollMode = SNAP_NONE; 6327 } 6328 } 6329 } else { 6330 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6331 mSnapScrollMode = SNAP_X; 6332 mSnapPositive = deltaX > 0; 6333 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6334 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6335 mSnapScrollMode = SNAP_Y; 6336 mSnapPositive = deltaY > 0; 6337 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6338 } 6339 } 6340 if (mSnapScrollMode != SNAP_NONE) { 6341 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6342 deltaY = 0; 6343 } else { 6344 deltaX = 0; 6345 } 6346 } 6347 mLastTouchX = x; 6348 mLastTouchY = y; 6349 6350 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6351 mHeldMotionless = MOTIONLESS_FALSE; 6352 nativeSetIsScrolling(true); 6353 } else { 6354 mHeldMotionless = MOTIONLESS_TRUE; 6355 nativeSetIsScrolling(false); 6356 keepScrollBarsVisible = true; 6357 } 6358 6359 mLastTouchTime = eventTime; 6360 } 6361 6362 doDrag(deltaX, deltaY); 6363 6364 // Turn off scrollbars when dragging a layer. 6365 if (keepScrollBarsVisible && 6366 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6367 if (mHeldMotionless != MOTIONLESS_TRUE) { 6368 mHeldMotionless = MOTIONLESS_TRUE; 6369 invalidate(); 6370 } 6371 // keep the scrollbar on the screen even there is no scroll 6372 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6373 false); 6374 // Post a message so that we'll keep them alive while we're not scrolling. 6375 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6376 .obtainMessage(AWAKEN_SCROLL_BARS), 6377 ViewConfiguration.getScrollDefaultDelay()); 6378 // return false to indicate that we can't pan out of the 6379 // view space 6380 return !done; 6381 } else { 6382 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6383 } 6384 break; 6385 } 6386 case MotionEvent.ACTION_UP: { 6387 if (!isFocused()) requestFocus(); 6388 // pass the touch events from UI thread to WebCore thread 6389 if (shouldForwardTouchEvent()) { 6390 TouchEventData ted = new TouchEventData(); 6391 ted.mIds = new int[1]; 6392 ted.mIds[0] = ev.getPointerId(0); 6393 ted.mAction = action; 6394 ted.mPoints = new Point[1]; 6395 ted.mPoints[0] = new Point(contentX, contentY); 6396 ted.mPointsInView = new Point[1]; 6397 ted.mPointsInView[0] = new Point(x, y); 6398 ted.mMetaState = ev.getMetaState(); 6399 ted.mReprocess = mDeferTouchProcess; 6400 ted.mNativeLayer = mScrollingLayer; 6401 ted.mNativeLayerRect.set(mScrollingLayerRect); 6402 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6403 mTouchEventQueue.preQueueTouchEventData(ted); 6404 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6405 } 6406 mLastTouchUpTime = eventTime; 6407 if (mSentAutoScrollMessage) { 6408 mAutoScrollX = mAutoScrollY = 0; 6409 } 6410 switch (mTouchMode) { 6411 case TOUCH_DOUBLE_TAP_MODE: // double tap 6412 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6413 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6414 if (inFullScreenMode() || mDeferTouchProcess) { 6415 TouchEventData ted = new TouchEventData(); 6416 ted.mIds = new int[1]; 6417 ted.mIds[0] = ev.getPointerId(0); 6418 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6419 ted.mPoints = new Point[1]; 6420 ted.mPoints[0] = new Point(contentX, contentY); 6421 ted.mPointsInView = new Point[1]; 6422 ted.mPointsInView[0] = new Point(x, y); 6423 ted.mMetaState = ev.getMetaState(); 6424 ted.mReprocess = mDeferTouchProcess; 6425 ted.mNativeLayer = nativeScrollableLayer( 6426 contentX, contentY, 6427 ted.mNativeLayerRect, null); 6428 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6429 mTouchEventQueue.preQueueTouchEventData(ted); 6430 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6431 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6432 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6433 mTouchMode = TOUCH_DONE_MODE; 6434 } 6435 break; 6436 case TOUCH_INIT_MODE: // tap 6437 case TOUCH_SHORTPRESS_START_MODE: 6438 case TOUCH_SHORTPRESS_MODE: 6439 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6440 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6441 if (mConfirmMove) { 6442 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6443 " WebCore's response for touch down."); 6444 if (mPreventDefault != PREVENT_DEFAULT_YES 6445 && (computeMaxScrollX() > 0 6446 || computeMaxScrollY() > 0)) { 6447 // If the user has performed a very quick touch 6448 // sequence it is possible that we may get here 6449 // before WebCore has had a chance to process the events. 6450 // In this case, any call to preventDefault in the 6451 // JS touch handler will not have been executed yet. 6452 // Hence we will see both the UI (now) and WebCore 6453 // (when context switches) handling the event, 6454 // regardless of whether the web developer actually 6455 // doeses preventDefault in their touch handler. This 6456 // is the nature of our asynchronous touch model. 6457 6458 // we will not rewrite drag code here, but we 6459 // will try fling if it applies. 6460 WebViewCore.reducePriority(); 6461 // to get better performance, pause updating the 6462 // picture 6463 WebViewCore.pauseUpdatePicture(mWebViewCore); 6464 // fall through to TOUCH_DRAG_MODE 6465 } else { 6466 // WebKit may consume the touch event and modify 6467 // DOM. drawContentPicture() will be called with 6468 // animateSroll as true for better performance. 6469 // Force redraw in high-quality. 6470 invalidate(); 6471 break; 6472 } 6473 } else { 6474 if (mSelectingText) { 6475 // tapping on selection or controls does nothing 6476 if (!nativeHitSelection(contentX, contentY)) { 6477 selectionDone(); 6478 } 6479 break; 6480 } 6481 // only trigger double tap if the WebView is 6482 // scalable 6483 if (mTouchMode == TOUCH_INIT_MODE 6484 && (canZoomIn() || canZoomOut())) { 6485 mPrivateHandler.sendEmptyMessageDelayed( 6486 RELEASE_SINGLE_TAP, ViewConfiguration 6487 .getDoubleTapTimeout()); 6488 } else { 6489 doShortPress(); 6490 } 6491 break; 6492 } 6493 case TOUCH_DRAG_MODE: 6494 case TOUCH_DRAG_LAYER_MODE: 6495 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6496 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6497 // if the user waits a while w/o moving before the 6498 // up, we don't want to do a fling 6499 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6500 if (mVelocityTracker == null) { 6501 Log.e(LOGTAG, "Got null mVelocityTracker when " 6502 + "mPreventDefault = " 6503 + mPreventDefault 6504 + " mDeferTouchProcess = " 6505 + mDeferTouchProcess); 6506 } else { 6507 mVelocityTracker.addMovement(ev); 6508 } 6509 // set to MOTIONLESS_IGNORE so that it won't keep 6510 // removing and sending message in 6511 // drawCoreAndCursorRing() 6512 mHeldMotionless = MOTIONLESS_IGNORE; 6513 doFling(); 6514 break; 6515 } else { 6516 if (mScroller.springBack(mScrollX, mScrollY, 0, 6517 computeMaxScrollX(), 0, 6518 computeMaxScrollY())) { 6519 invalidate(); 6520 } 6521 } 6522 // redraw in high-quality, as we're done dragging 6523 mHeldMotionless = MOTIONLESS_TRUE; 6524 invalidate(); 6525 // fall through 6526 case TOUCH_DRAG_START_MODE: 6527 // TOUCH_DRAG_START_MODE should not happen for the real 6528 // device as we almost certain will get a MOVE. But this 6529 // is possible on emulator. 6530 mLastVelocity = 0; 6531 WebViewCore.resumePriority(); 6532 if (!mSelectingText) { 6533 WebViewCore.resumeUpdatePicture(mWebViewCore); 6534 } 6535 break; 6536 } 6537 stopTouch(); 6538 break; 6539 } 6540 case MotionEvent.ACTION_CANCEL: { 6541 if (mTouchMode == TOUCH_DRAG_MODE) { 6542 mScroller.springBack(mScrollX, mScrollY, 0, 6543 computeMaxScrollX(), 0, computeMaxScrollY()); 6544 invalidate(); 6545 } 6546 cancelWebCoreTouchEvent(contentX, contentY, false); 6547 cancelTouch(); 6548 break; 6549 } 6550 } 6551 return true; 6552 } 6553 6554 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6555 TouchEventData ted = new TouchEventData(); 6556 ted.mAction = ev.getActionMasked(); 6557 final int count = ev.getPointerCount(); 6558 ted.mIds = new int[count]; 6559 ted.mPoints = new Point[count]; 6560 ted.mPointsInView = new Point[count]; 6561 for (int c = 0; c < count; c++) { 6562 ted.mIds[c] = ev.getPointerId(c); 6563 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6564 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6565 ted.mPoints[c] = new Point(x, y); 6566 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6567 } 6568 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6569 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6570 ted.mActionIndex = ev.getActionIndex(); 6571 } 6572 ted.mMetaState = ev.getMetaState(); 6573 ted.mReprocess = true; 6574 ted.mMotionEvent = MotionEvent.obtain(ev); 6575 ted.mSequence = sequence; 6576 mTouchEventQueue.preQueueTouchEventData(ted); 6577 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6578 cancelLongPress(); 6579 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6580 } 6581 6582 void handleMultiTouchInWebView(MotionEvent ev) { 6583 if (DebugFlags.WEB_VIEW) { 6584 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6585 + " mTouchMode=" + mTouchMode 6586 + " numPointers=" + ev.getPointerCount() 6587 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6588 } 6589 6590 final ScaleGestureDetector detector = 6591 mZoomManager.getMultiTouchGestureDetector(); 6592 6593 // A few apps use WebView but don't instantiate gesture detector. 6594 // We don't need to support multi touch for them. 6595 if (detector == null) return; 6596 6597 float x = ev.getX(); 6598 float y = ev.getY(); 6599 6600 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6601 detector.onTouchEvent(ev); 6602 6603 if (detector.isInProgress()) { 6604 if (DebugFlags.WEB_VIEW) { 6605 Log.v(LOGTAG, "detector is in progress"); 6606 } 6607 mLastTouchTime = ev.getEventTime(); 6608 x = detector.getFocusX(); 6609 y = detector.getFocusY(); 6610 6611 cancelLongPress(); 6612 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6613 if (!mZoomManager.supportsPanDuringZoom()) { 6614 return; 6615 } 6616 mTouchMode = TOUCH_DRAG_MODE; 6617 if (mVelocityTracker == null) { 6618 mVelocityTracker = VelocityTracker.obtain(); 6619 } 6620 } 6621 } 6622 6623 int action = ev.getActionMasked(); 6624 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6625 cancelTouch(); 6626 action = MotionEvent.ACTION_DOWN; 6627 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6628 // set mLastTouchX/Y to the remaining points for multi-touch. 6629 mLastTouchX = Math.round(x); 6630 mLastTouchY = Math.round(y); 6631 } else if (action == MotionEvent.ACTION_MOVE) { 6632 // negative x or y indicate it is on the edge, skip it. 6633 if (x < 0 || y < 0) { 6634 return; 6635 } 6636 } 6637 6638 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6639 } 6640 6641 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6642 if (shouldForwardTouchEvent()) { 6643 if (removeEvents) { 6644 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6645 } 6646 TouchEventData ted = new TouchEventData(); 6647 ted.mIds = new int[1]; 6648 ted.mIds[0] = 0; 6649 ted.mPoints = new Point[1]; 6650 ted.mPoints[0] = new Point(x, y); 6651 ted.mPointsInView = new Point[1]; 6652 int viewX = contentToViewX(x) - mScrollX; 6653 int viewY = contentToViewY(y) - mScrollY; 6654 ted.mPointsInView[0] = new Point(viewX, viewY); 6655 ted.mAction = MotionEvent.ACTION_CANCEL; 6656 ted.mNativeLayer = nativeScrollableLayer( 6657 x, y, ted.mNativeLayerRect, null); 6658 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6659 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6660 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6661 6662 if (removeEvents) { 6663 // Mark this after sending the message above; we should 6664 // be willing to ignore the cancel event that we just sent. 6665 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6666 } 6667 } 6668 } 6669 6670 private void startTouch(float x, float y, long eventTime) { 6671 // Remember where the motion event started 6672 mStartTouchX = mLastTouchX = Math.round(x); 6673 mStartTouchY = mLastTouchY = Math.round(y); 6674 mLastTouchTime = eventTime; 6675 mVelocityTracker = VelocityTracker.obtain(); 6676 mSnapScrollMode = SNAP_NONE; 6677 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6678 ViewConfiguration.getTapTimeout()); 6679 } 6680 6681 private void startDrag() { 6682 WebViewCore.reducePriority(); 6683 // to get better performance, pause updating the picture 6684 WebViewCore.pauseUpdatePicture(mWebViewCore); 6685 nativeSetIsScrolling(true); 6686 6687 if (!mDragFromTextInput) { 6688 nativeHideCursor(); 6689 } 6690 6691 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6692 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6693 mZoomManager.invokeZoomPicker(); 6694 } 6695 } 6696 6697 private void doDrag(int deltaX, int deltaY) { 6698 if ((deltaX | deltaY) != 0) { 6699 int oldX = mScrollX; 6700 int oldY = mScrollY; 6701 int rangeX = computeMaxScrollX(); 6702 int rangeY = computeMaxScrollY(); 6703 int overscrollDistance = mOverscrollDistance; 6704 6705 // Check for the original scrolling layer in case we change 6706 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6707 // reached the edge of a layer but mScrollingLayer will be non-zero 6708 // if we initiated the drag on a layer. 6709 if (mScrollingLayer != 0) { 6710 final int contentX = viewToContentDimension(deltaX); 6711 final int contentY = viewToContentDimension(deltaY); 6712 6713 // Check the scrolling bounds to see if we will actually do any 6714 // scrolling. The rectangle is in document coordinates. 6715 final int maxX = mScrollingLayerRect.right; 6716 final int maxY = mScrollingLayerRect.bottom; 6717 final int resultX = Math.max(0, 6718 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6719 final int resultY = Math.max(0, 6720 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6721 6722 if (resultX != mScrollingLayerRect.left || 6723 resultY != mScrollingLayerRect.top) { 6724 // In case we switched to dragging the page. 6725 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6726 deltaX = contentX; 6727 deltaY = contentY; 6728 oldX = mScrollingLayerRect.left; 6729 oldY = mScrollingLayerRect.top; 6730 rangeX = maxX; 6731 rangeY = maxY; 6732 } else { 6733 // Scroll the main page if we are not going to scroll the 6734 // layer. This does not reset mScrollingLayer in case the 6735 // user changes directions and the layer can scroll the 6736 // other way. 6737 mTouchMode = TOUCH_DRAG_MODE; 6738 } 6739 } 6740 6741 if (mOverScrollGlow != null) { 6742 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6743 } 6744 6745 overScrollBy(deltaX, deltaY, oldX, oldY, 6746 rangeX, rangeY, 6747 mOverscrollDistance, mOverscrollDistance, true); 6748 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6749 invalidate(); 6750 } 6751 } 6752 mZoomManager.keepZoomPickerVisible(); 6753 } 6754 6755 private void stopTouch() { 6756 if (mScroller.isFinished() && !mSelectingText 6757 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6758 WebViewCore.resumePriority(); 6759 WebViewCore.resumeUpdatePicture(mWebViewCore); 6760 nativeSetIsScrolling(false); 6761 } 6762 6763 // we also use mVelocityTracker == null to tell us that we are 6764 // not "moving around", so we can take the slower/prettier 6765 // mode in the drawing code 6766 if (mVelocityTracker != null) { 6767 mVelocityTracker.recycle(); 6768 mVelocityTracker = null; 6769 } 6770 6771 // Release any pulled glows 6772 if (mOverScrollGlow != null) { 6773 mOverScrollGlow.releaseAll(); 6774 } 6775 } 6776 6777 private void cancelTouch() { 6778 // we also use mVelocityTracker == null to tell us that we are 6779 // not "moving around", so we can take the slower/prettier 6780 // mode in the drawing code 6781 if (mVelocityTracker != null) { 6782 mVelocityTracker.recycle(); 6783 mVelocityTracker = null; 6784 } 6785 6786 if ((mTouchMode == TOUCH_DRAG_MODE 6787 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6788 WebViewCore.resumePriority(); 6789 WebViewCore.resumeUpdatePicture(mWebViewCore); 6790 nativeSetIsScrolling(false); 6791 } 6792 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6793 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6794 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6795 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6796 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6797 removeTouchHighlight(); 6798 } 6799 mHeldMotionless = MOTIONLESS_TRUE; 6800 mTouchMode = TOUCH_DONE_MODE; 6801 nativeHideCursor(); 6802 } 6803 6804 @Override 6805 public boolean onGenericMotionEvent(MotionEvent event) { 6806 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6807 switch (event.getAction()) { 6808 case MotionEvent.ACTION_SCROLL: { 6809 final float vscroll; 6810 final float hscroll; 6811 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6812 vscroll = 0; 6813 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6814 } else { 6815 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6816 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6817 } 6818 if (hscroll != 0 || vscroll != 0) { 6819 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6820 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6821 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6822 return true; 6823 } 6824 } 6825 } 6826 } 6827 } 6828 return super.onGenericMotionEvent(event); 6829 } 6830 6831 private long mTrackballFirstTime = 0; 6832 private long mTrackballLastTime = 0; 6833 private float mTrackballRemainsX = 0.0f; 6834 private float mTrackballRemainsY = 0.0f; 6835 private int mTrackballXMove = 0; 6836 private int mTrackballYMove = 0; 6837 private boolean mSelectingText = false; 6838 private boolean mSelectionStarted = false; 6839 private boolean mExtendSelection = false; 6840 private boolean mDrawSelectionPointer = false; 6841 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6842 private static final int TRACKBALL_TIMEOUT = 200; 6843 private static final int TRACKBALL_WAIT = 100; 6844 private static final int TRACKBALL_SCALE = 400; 6845 private static final int TRACKBALL_SCROLL_COUNT = 5; 6846 private static final int TRACKBALL_MOVE_COUNT = 10; 6847 private static final int TRACKBALL_MULTIPLIER = 3; 6848 private static final int SELECT_CURSOR_OFFSET = 16; 6849 private static final int SELECT_SCROLL = 5; 6850 private int mSelectX = 0; 6851 private int mSelectY = 0; 6852 private boolean mFocusSizeChanged = false; 6853 private boolean mTrackballDown = false; 6854 private long mTrackballUpTime = 0; 6855 private long mLastCursorTime = 0; 6856 private Rect mLastCursorBounds; 6857 6858 // Set by default; BrowserActivity clears to interpret trackball data 6859 // directly for movement. Currently, the framework only passes 6860 // arrow key events, not trackball events, from one child to the next 6861 private boolean mMapTrackballToArrowKeys = true; 6862 6863 private DrawData mDelaySetPicture; 6864 private DrawData mLoadedPicture; 6865 6866 public void setMapTrackballToArrowKeys(boolean setMap) { 6867 checkThread(); 6868 mMapTrackballToArrowKeys = setMap; 6869 } 6870 6871 void resetTrackballTime() { 6872 mTrackballLastTime = 0; 6873 } 6874 6875 @Override 6876 public boolean onTrackballEvent(MotionEvent ev) { 6877 long time = ev.getEventTime(); 6878 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6879 if (ev.getY() > 0) pageDown(true); 6880 if (ev.getY() < 0) pageUp(true); 6881 return true; 6882 } 6883 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6884 if (mSelectingText) { 6885 return true; // discard press if copy in progress 6886 } 6887 mTrackballDown = true; 6888 if (mNativeClass == 0) { 6889 return false; 6890 } 6891 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6892 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6893 nativeSelectBestAt(mLastCursorBounds); 6894 } 6895 if (DebugFlags.WEB_VIEW) { 6896 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6897 + " time=" + time 6898 + " mLastCursorTime=" + mLastCursorTime); 6899 } 6900 if (isInTouchMode()) requestFocusFromTouch(); 6901 return false; // let common code in onKeyDown at it 6902 } 6903 if (ev.getAction() == MotionEvent.ACTION_UP) { 6904 // LONG_PRESS_CENTER is set in common onKeyDown 6905 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6906 mTrackballDown = false; 6907 mTrackballUpTime = time; 6908 if (mSelectingText) { 6909 if (mExtendSelection) { 6910 copySelection(); 6911 selectionDone(); 6912 } else { 6913 mExtendSelection = true; 6914 nativeSetExtendSelection(); 6915 invalidate(); // draw the i-beam instead of the arrow 6916 } 6917 return true; // discard press if copy in progress 6918 } 6919 if (DebugFlags.WEB_VIEW) { 6920 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6921 + " time=" + time 6922 ); 6923 } 6924 return false; // let common code in onKeyUp at it 6925 } 6926 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6927 AccessibilityManager.getInstance(mContext).isEnabled()) { 6928 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6929 return false; 6930 } 6931 if (mTrackballDown) { 6932 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6933 return true; // discard move if trackball is down 6934 } 6935 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6936 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6937 return true; 6938 } 6939 // TODO: alternatively we can do panning as touch does 6940 switchOutDrawHistory(); 6941 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6942 if (DebugFlags.WEB_VIEW) { 6943 Log.v(LOGTAG, "onTrackballEvent time=" 6944 + time + " last=" + mTrackballLastTime); 6945 } 6946 mTrackballFirstTime = time; 6947 mTrackballXMove = mTrackballYMove = 0; 6948 } 6949 mTrackballLastTime = time; 6950 if (DebugFlags.WEB_VIEW) { 6951 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6952 } 6953 mTrackballRemainsX += ev.getX(); 6954 mTrackballRemainsY += ev.getY(); 6955 doTrackball(time, ev.getMetaState()); 6956 return true; 6957 } 6958 6959 void moveSelection(float xRate, float yRate) { 6960 if (mNativeClass == 0) 6961 return; 6962 int width = getViewWidth(); 6963 int height = getViewHeight(); 6964 mSelectX += xRate; 6965 mSelectY += yRate; 6966 int maxX = width + mScrollX; 6967 int maxY = height + mScrollY; 6968 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6969 , mSelectX)); 6970 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6971 , mSelectY)); 6972 if (DebugFlags.WEB_VIEW) { 6973 Log.v(LOGTAG, "moveSelection" 6974 + " mSelectX=" + mSelectX 6975 + " mSelectY=" + mSelectY 6976 + " mScrollX=" + mScrollX 6977 + " mScrollY=" + mScrollY 6978 + " xRate=" + xRate 6979 + " yRate=" + yRate 6980 ); 6981 } 6982 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6983 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6984 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6985 : 0; 6986 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6987 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6988 : 0; 6989 pinScrollBy(scrollX, scrollY, true, 0); 6990 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6991 requestRectangleOnScreen(select); 6992 invalidate(); 6993 } 6994 6995 private int scaleTrackballX(float xRate, int width) { 6996 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6997 int nextXMove = xMove; 6998 if (xMove > 0) { 6999 if (xMove > mTrackballXMove) { 7000 xMove -= mTrackballXMove; 7001 } 7002 } else if (xMove < mTrackballXMove) { 7003 xMove -= mTrackballXMove; 7004 } 7005 mTrackballXMove = nextXMove; 7006 return xMove; 7007 } 7008 7009 private int scaleTrackballY(float yRate, int height) { 7010 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7011 int nextYMove = yMove; 7012 if (yMove > 0) { 7013 if (yMove > mTrackballYMove) { 7014 yMove -= mTrackballYMove; 7015 } 7016 } else if (yMove < mTrackballYMove) { 7017 yMove -= mTrackballYMove; 7018 } 7019 mTrackballYMove = nextYMove; 7020 return yMove; 7021 } 7022 7023 private int keyCodeToSoundsEffect(int keyCode) { 7024 switch(keyCode) { 7025 case KeyEvent.KEYCODE_DPAD_UP: 7026 return SoundEffectConstants.NAVIGATION_UP; 7027 case KeyEvent.KEYCODE_DPAD_RIGHT: 7028 return SoundEffectConstants.NAVIGATION_RIGHT; 7029 case KeyEvent.KEYCODE_DPAD_DOWN: 7030 return SoundEffectConstants.NAVIGATION_DOWN; 7031 case KeyEvent.KEYCODE_DPAD_LEFT: 7032 return SoundEffectConstants.NAVIGATION_LEFT; 7033 } 7034 throw new IllegalArgumentException("keyCode must be one of " + 7035 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7036 "KEYCODE_DPAD_LEFT}."); 7037 } 7038 7039 private void doTrackball(long time, int metaState) { 7040 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7041 if (elapsed == 0) { 7042 elapsed = TRACKBALL_TIMEOUT; 7043 } 7044 float xRate = mTrackballRemainsX * 1000 / elapsed; 7045 float yRate = mTrackballRemainsY * 1000 / elapsed; 7046 int viewWidth = getViewWidth(); 7047 int viewHeight = getViewHeight(); 7048 if (mSelectingText) { 7049 if (!mDrawSelectionPointer) { 7050 // The last selection was made by touch, disabling drawing the 7051 // selection pointer. Allow the trackball to adjust the 7052 // position of the touch control. 7053 mSelectX = contentToViewX(nativeSelectionX()); 7054 mSelectY = contentToViewY(nativeSelectionY()); 7055 mDrawSelectionPointer = mExtendSelection = true; 7056 nativeSetExtendSelection(); 7057 } 7058 moveSelection(scaleTrackballX(xRate, viewWidth), 7059 scaleTrackballY(yRate, viewHeight)); 7060 mTrackballRemainsX = mTrackballRemainsY = 0; 7061 return; 7062 } 7063 float ax = Math.abs(xRate); 7064 float ay = Math.abs(yRate); 7065 float maxA = Math.max(ax, ay); 7066 if (DebugFlags.WEB_VIEW) { 7067 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7068 + " xRate=" + xRate 7069 + " yRate=" + yRate 7070 + " mTrackballRemainsX=" + mTrackballRemainsX 7071 + " mTrackballRemainsY=" + mTrackballRemainsY); 7072 } 7073 int width = mContentWidth - viewWidth; 7074 int height = mContentHeight - viewHeight; 7075 if (width < 0) width = 0; 7076 if (height < 0) height = 0; 7077 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7078 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7079 maxA = Math.max(ax, ay); 7080 int count = Math.max(0, (int) maxA); 7081 int oldScrollX = mScrollX; 7082 int oldScrollY = mScrollY; 7083 if (count > 0) { 7084 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7085 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7086 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7087 KeyEvent.KEYCODE_DPAD_RIGHT; 7088 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7089 if (DebugFlags.WEB_VIEW) { 7090 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7091 + " count=" + count 7092 + " mTrackballRemainsX=" + mTrackballRemainsX 7093 + " mTrackballRemainsY=" + mTrackballRemainsY); 7094 } 7095 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7096 for (int i = 0; i < count; i++) { 7097 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7098 } 7099 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7100 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7101 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7102 } 7103 mTrackballRemainsX = mTrackballRemainsY = 0; 7104 } 7105 if (count >= TRACKBALL_SCROLL_COUNT) { 7106 int xMove = scaleTrackballX(xRate, width); 7107 int yMove = scaleTrackballY(yRate, height); 7108 if (DebugFlags.WEB_VIEW) { 7109 Log.v(LOGTAG, "doTrackball pinScrollBy" 7110 + " count=" + count 7111 + " xMove=" + xMove + " yMove=" + yMove 7112 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7113 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7114 ); 7115 } 7116 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7117 xMove = 0; 7118 } 7119 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7120 yMove = 0; 7121 } 7122 if (xMove != 0 || yMove != 0) { 7123 pinScrollBy(xMove, yMove, true, 0); 7124 } 7125 } 7126 } 7127 7128 /** 7129 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7130 * @return Maximum horizontal scroll position within real content 7131 */ 7132 int computeMaxScrollX() { 7133 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7134 } 7135 7136 /** 7137 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7138 * @return Maximum vertical scroll position within real content 7139 */ 7140 int computeMaxScrollY() { 7141 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7142 - getViewHeightWithTitle(), 0); 7143 } 7144 7145 boolean updateScrollCoordinates(int x, int y) { 7146 int oldX = mScrollX; 7147 int oldY = mScrollY; 7148 mScrollX = x; 7149 mScrollY = y; 7150 if (oldX != mScrollX || oldY != mScrollY) { 7151 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7152 return true; 7153 } else { 7154 return false; 7155 } 7156 } 7157 7158 public void flingScroll(int vx, int vy) { 7159 checkThread(); 7160 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7161 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7162 invalidate(); 7163 } 7164 7165 private void doFling() { 7166 if (mVelocityTracker == null) { 7167 return; 7168 } 7169 int maxX = computeMaxScrollX(); 7170 int maxY = computeMaxScrollY(); 7171 7172 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7173 int vx = (int) mVelocityTracker.getXVelocity(); 7174 int vy = (int) mVelocityTracker.getYVelocity(); 7175 7176 int scrollX = mScrollX; 7177 int scrollY = mScrollY; 7178 int overscrollDistance = mOverscrollDistance; 7179 int overflingDistance = mOverflingDistance; 7180 7181 // Use the layer's scroll data if applicable. 7182 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7183 scrollX = mScrollingLayerRect.left; 7184 scrollY = mScrollingLayerRect.top; 7185 maxX = mScrollingLayerRect.right; 7186 maxY = mScrollingLayerRect.bottom; 7187 // No overscrolling for layers. 7188 overscrollDistance = overflingDistance = 0; 7189 } 7190 7191 if (mSnapScrollMode != SNAP_NONE) { 7192 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7193 vy = 0; 7194 } else { 7195 vx = 0; 7196 } 7197 } 7198 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7199 WebViewCore.resumePriority(); 7200 if (!mSelectingText) { 7201 WebViewCore.resumeUpdatePicture(mWebViewCore); 7202 } 7203 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7204 invalidate(); 7205 } 7206 return; 7207 } 7208 float currentVelocity = mScroller.getCurrVelocity(); 7209 float velocity = (float) Math.hypot(vx, vy); 7210 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7211 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7212 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7213 - Math.atan2(vy, vx))); 7214 final float circle = (float) (Math.PI) * 2.0f; 7215 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7216 vx += currentVelocity * mLastVelX / mLastVelocity; 7217 vy += currentVelocity * mLastVelY / mLastVelocity; 7218 velocity = (float) Math.hypot(vx, vy); 7219 if (DebugFlags.WEB_VIEW) { 7220 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7221 } 7222 } else if (DebugFlags.WEB_VIEW) { 7223 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7224 } 7225 } else if (DebugFlags.WEB_VIEW) { 7226 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7227 + " current=" + currentVelocity 7228 + " vx=" + vx + " vy=" + vy 7229 + " maxX=" + maxX + " maxY=" + maxY 7230 + " scrollX=" + scrollX + " scrollY=" + scrollY 7231 + " layer=" + mScrollingLayer); 7232 } 7233 7234 // Allow sloppy flings without overscrolling at the edges. 7235 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7236 vx = 0; 7237 } 7238 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7239 vy = 0; 7240 } 7241 7242 if (overscrollDistance < overflingDistance) { 7243 if ((vx > 0 && scrollX == -overscrollDistance) || 7244 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7245 vx = 0; 7246 } 7247 if ((vy > 0 && scrollY == -overscrollDistance) || 7248 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7249 vy = 0; 7250 } 7251 } 7252 7253 mLastVelX = vx; 7254 mLastVelY = vy; 7255 mLastVelocity = velocity; 7256 7257 // no horizontal overscroll if the content just fits 7258 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7259 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7260 // Duration is calculated based on velocity. With range boundaries and overscroll 7261 // we may not know how long the final animation will take. (Hence the deprecation 7262 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7263 // resumes during this effect we will take a performance hit. See computeScroll; 7264 // we resume webcore there when the animation is finished. 7265 final int time = mScroller.getDuration(); 7266 7267 // Suppress scrollbars for layer scrolling. 7268 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7269 awakenScrollBars(time); 7270 } 7271 7272 invalidate(); 7273 } 7274 7275 /** 7276 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7277 * in charge of installing this view to the view hierarchy. This view will 7278 * become visible when the user starts scrolling via touch and fade away if 7279 * the user does not interact with it. 7280 * <p/> 7281 * API version 3 introduces a built-in zoom mechanism that is shown 7282 * automatically by the MapView. This is the preferred approach for 7283 * showing the zoom UI. 7284 * 7285 * @deprecated The built-in zoom mechanism is preferred, see 7286 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7287 */ 7288 @Deprecated 7289 public View getZoomControls() { 7290 checkThread(); 7291 if (!getSettings().supportZoom()) { 7292 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7293 return null; 7294 } 7295 return mZoomManager.getExternalZoomPicker(); 7296 } 7297 7298 void dismissZoomControl() { 7299 mZoomManager.dismissZoomPicker(); 7300 } 7301 7302 float getDefaultZoomScale() { 7303 return mZoomManager.getDefaultScale(); 7304 } 7305 7306 /** 7307 * Return the overview scale of the WebView 7308 * @return The overview scale. 7309 */ 7310 float getZoomOverviewScale() { 7311 return mZoomManager.getZoomOverviewScale(); 7312 } 7313 7314 /** 7315 * @return TRUE if the WebView can be zoomed in. 7316 */ 7317 public boolean canZoomIn() { 7318 checkThread(); 7319 return mZoomManager.canZoomIn(); 7320 } 7321 7322 /** 7323 * @return TRUE if the WebView can be zoomed out. 7324 */ 7325 public boolean canZoomOut() { 7326 checkThread(); 7327 return mZoomManager.canZoomOut(); 7328 } 7329 7330 /** 7331 * Perform zoom in in the webview 7332 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7333 */ 7334 public boolean zoomIn() { 7335 checkThread(); 7336 return mZoomManager.zoomIn(); 7337 } 7338 7339 /** 7340 * Perform zoom out in the webview 7341 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7342 */ 7343 public boolean zoomOut() { 7344 checkThread(); 7345 return mZoomManager.zoomOut(); 7346 } 7347 7348 /** 7349 * This selects the best clickable target at mLastTouchX and mLastTouchY 7350 * and calls showCursorTimed on the native side 7351 */ 7352 private void updateSelection() { 7353 if (mNativeClass == 0) { 7354 return; 7355 } 7356 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7357 // mLastTouchX and mLastTouchY are the point in the current viewport 7358 int contentX = viewToContentX(mLastTouchX + mScrollX); 7359 int contentY = viewToContentY(mLastTouchY + mScrollY); 7360 int slop = viewToContentDimension(mNavSlop); 7361 Rect rect = new Rect(contentX - slop, contentY - slop, 7362 contentX + slop, contentY + slop); 7363 nativeSelectBestAt(rect); 7364 mInitialHitTestResult = hitTestResult(null); 7365 } 7366 7367 /** 7368 * Scroll the focused text field to match the WebTextView 7369 * @param xPercent New x position of the WebTextView from 0 to 1. 7370 */ 7371 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7372 if (!inEditingMode() || mWebViewCore == null) { 7373 return; 7374 } 7375 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7376 new Float(xPercent)); 7377 } 7378 7379 /** 7380 * Scroll the focused textarea vertically to match the WebTextView 7381 * @param y New y position of the WebTextView in view coordinates 7382 */ 7383 /* package */ void scrollFocusedTextInputY(int y) { 7384 if (!inEditingMode() || mWebViewCore == null) { 7385 return; 7386 } 7387 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7388 } 7389 7390 /** 7391 * Set our starting point and time for a drag from the WebTextView. 7392 */ 7393 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7394 if (!inEditingMode()) { 7395 return; 7396 } 7397 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7398 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7399 mLastTouchTime = eventTime; 7400 if (!mScroller.isFinished()) { 7401 abortAnimation(); 7402 } 7403 mSnapScrollMode = SNAP_NONE; 7404 mVelocityTracker = VelocityTracker.obtain(); 7405 mTouchMode = TOUCH_DRAG_START_MODE; 7406 } 7407 7408 /** 7409 * Given a motion event from the WebTextView, set its location to our 7410 * coordinates, and handle the event. 7411 */ 7412 /*package*/ boolean textFieldDrag(MotionEvent event) { 7413 if (!inEditingMode()) { 7414 return false; 7415 } 7416 mDragFromTextInput = true; 7417 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7418 (float) (mWebTextView.getTop() - mScrollY)); 7419 boolean result = onTouchEvent(event); 7420 mDragFromTextInput = false; 7421 return result; 7422 } 7423 7424 /** 7425 * Due a touch up from a WebTextView. This will be handled by webkit to 7426 * change the selection. 7427 * @param event MotionEvent in the WebTextView's coordinates. 7428 */ 7429 /*package*/ void touchUpOnTextField(MotionEvent event) { 7430 if (!inEditingMode()) { 7431 return; 7432 } 7433 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7434 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7435 int slop = viewToContentDimension(mNavSlop); 7436 nativeMotionUp(x, y, slop); 7437 } 7438 7439 /** 7440 * Called when pressing the center key or trackball on a textfield. 7441 */ 7442 /*package*/ void centerKeyPressOnTextField() { 7443 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7444 nativeCursorNodePointer()); 7445 } 7446 7447 private void doShortPress() { 7448 if (mNativeClass == 0) { 7449 return; 7450 } 7451 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7452 return; 7453 } 7454 mTouchMode = TOUCH_DONE_MODE; 7455 updateSelection(); 7456 switchOutDrawHistory(); 7457 // mLastTouchX and mLastTouchY are the point in the current viewport 7458 int contentX = viewToContentX(mLastTouchX + mScrollX); 7459 int contentY = viewToContentY(mLastTouchY + mScrollY); 7460 int slop = viewToContentDimension(mNavSlop); 7461 if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) { 7462 // set mTouchHighlightRequested to 0 to cause an immediate 7463 // drawing of the touch rings 7464 mTouchHighlightRequested = 0; 7465 invalidate(mTouchHighlightRegion.getBounds()); 7466 mPrivateHandler.postDelayed(new Runnable() { 7467 @Override 7468 public void run() { 7469 removeTouchHighlight(); 7470 } 7471 }, ViewConfiguration.getPressedStateDuration()); 7472 } 7473 if (getSettings().supportTouchOnly()) { 7474 removeTouchHighlight(); 7475 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7476 // use "0" as generation id to inform WebKit to use the same x/y as 7477 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7478 touchUpData.mMoveGeneration = 0; 7479 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7480 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7481 WebViewCore.MotionUpData motionUpData = new WebViewCore 7482 .MotionUpData(); 7483 motionUpData.mFrame = nativeCacheHitFramePointer(); 7484 motionUpData.mNode = nativeCacheHitNodePointer(); 7485 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7486 motionUpData.mX = contentX; 7487 motionUpData.mY = contentY; 7488 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7489 motionUpData); 7490 } else { 7491 doMotionUp(contentX, contentY); 7492 } 7493 } 7494 7495 private void doMotionUp(int contentX, int contentY) { 7496 int slop = viewToContentDimension(mNavSlop); 7497 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7498 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7499 } 7500 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7501 playSoundEffect(SoundEffectConstants.CLICK); 7502 } 7503 } 7504 7505 void sendPluginDrawMsg() { 7506 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7507 } 7508 7509 /** 7510 * Returns plugin bounds if x/y in content coordinates corresponds to a 7511 * plugin. Otherwise a NULL rectangle is returned. 7512 */ 7513 Rect getPluginBounds(int x, int y) { 7514 int slop = viewToContentDimension(mNavSlop); 7515 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7516 return nativeCacheHitNodeBounds(); 7517 } else { 7518 return null; 7519 } 7520 } 7521 7522 /* 7523 * Return true if the rect (e.g. plugin) is fully visible and maximized 7524 * inside the WebView. 7525 */ 7526 boolean isRectFitOnScreen(Rect rect) { 7527 final int rectWidth = rect.width(); 7528 final int rectHeight = rect.height(); 7529 final int viewWidth = getViewWidth(); 7530 final int viewHeight = getViewHeightWithTitle(); 7531 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7532 scale = mZoomManager.computeScaleWithLimits(scale); 7533 return !mZoomManager.willScaleTriggerZoom(scale) 7534 && contentToViewX(rect.left) >= mScrollX 7535 && contentToViewX(rect.right) <= mScrollX + viewWidth 7536 && contentToViewY(rect.top) >= mScrollY 7537 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7538 } 7539 7540 /* 7541 * Maximize and center the rectangle, specified in the document coordinate 7542 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7543 * animated scroll to center it. If the zoom needs to be changed, find the 7544 * zoom center and do a smooth zoom transition. The rect is in document 7545 * coordinates 7546 */ 7547 void centerFitRect(Rect rect) { 7548 final int rectWidth = rect.width(); 7549 final int rectHeight = rect.height(); 7550 final int viewWidth = getViewWidth(); 7551 final int viewHeight = getViewHeightWithTitle(); 7552 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7553 / rectHeight); 7554 scale = mZoomManager.computeScaleWithLimits(scale); 7555 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7556 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7557 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7558 true, 0); 7559 } else { 7560 float actualScale = mZoomManager.getScale(); 7561 float oldScreenX = rect.left * actualScale - mScrollX; 7562 float rectViewX = rect.left * scale; 7563 float rectViewWidth = rectWidth * scale; 7564 float newMaxWidth = mContentWidth * scale; 7565 float newScreenX = (viewWidth - rectViewWidth) / 2; 7566 // pin the newX to the WebView 7567 if (newScreenX > rectViewX) { 7568 newScreenX = rectViewX; 7569 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7570 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7571 } 7572 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7573 / (scale - actualScale); 7574 float oldScreenY = rect.top * actualScale + getTitleHeight() 7575 - mScrollY; 7576 float rectViewY = rect.top * scale + getTitleHeight(); 7577 float rectViewHeight = rectHeight * scale; 7578 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7579 float newScreenY = (viewHeight - rectViewHeight) / 2; 7580 // pin the newY to the WebView 7581 if (newScreenY > rectViewY) { 7582 newScreenY = rectViewY; 7583 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7584 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7585 } 7586 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7587 / (scale - actualScale); 7588 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7589 mZoomManager.startZoomAnimation(scale, false); 7590 } 7591 } 7592 7593 // Called by JNI to handle a touch on a node representing an email address, 7594 // address, or phone number 7595 private void overrideLoading(String url) { 7596 mCallbackProxy.uiOverrideUrlLoading(url); 7597 } 7598 7599 @Override 7600 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7601 // FIXME: If a subwindow is showing find, and the user touches the 7602 // background window, it can steal focus. 7603 if (mFindIsUp) return false; 7604 boolean result = false; 7605 if (inEditingMode()) { 7606 result = mWebTextView.requestFocus(direction, 7607 previouslyFocusedRect); 7608 } else { 7609 result = super.requestFocus(direction, previouslyFocusedRect); 7610 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7611 // For cases such as GMail, where we gain focus from a direction, 7612 // we want to move to the first available link. 7613 // FIXME: If there are no visible links, we may not want to 7614 int fakeKeyDirection = 0; 7615 switch(direction) { 7616 case View.FOCUS_UP: 7617 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7618 break; 7619 case View.FOCUS_DOWN: 7620 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7621 break; 7622 case View.FOCUS_LEFT: 7623 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7624 break; 7625 case View.FOCUS_RIGHT: 7626 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7627 break; 7628 default: 7629 return result; 7630 } 7631 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7632 navHandledKey(fakeKeyDirection, 1, true, 0); 7633 } 7634 } 7635 } 7636 return result; 7637 } 7638 7639 @Override 7640 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7641 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7642 7643 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7644 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7645 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7646 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7647 7648 int measuredHeight = heightSize; 7649 int measuredWidth = widthSize; 7650 7651 // Grab the content size from WebViewCore. 7652 int contentHeight = contentToViewDimension(mContentHeight); 7653 int contentWidth = contentToViewDimension(mContentWidth); 7654 7655// Log.d(LOGTAG, "------- measure " + heightMode); 7656 7657 if (heightMode != MeasureSpec.EXACTLY) { 7658 mHeightCanMeasure = true; 7659 measuredHeight = contentHeight; 7660 if (heightMode == MeasureSpec.AT_MOST) { 7661 // If we are larger than the AT_MOST height, then our height can 7662 // no longer be measured and we should scroll internally. 7663 if (measuredHeight > heightSize) { 7664 measuredHeight = heightSize; 7665 mHeightCanMeasure = false; 7666 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7667 } 7668 } 7669 } else { 7670 mHeightCanMeasure = false; 7671 } 7672 if (mNativeClass != 0) { 7673 nativeSetHeightCanMeasure(mHeightCanMeasure); 7674 } 7675 // For the width, always use the given size unless unspecified. 7676 if (widthMode == MeasureSpec.UNSPECIFIED) { 7677 mWidthCanMeasure = true; 7678 measuredWidth = contentWidth; 7679 } else { 7680 if (measuredWidth < contentWidth) { 7681 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7682 } 7683 mWidthCanMeasure = false; 7684 } 7685 7686 synchronized (this) { 7687 setMeasuredDimension(measuredWidth, measuredHeight); 7688 } 7689 } 7690 7691 @Override 7692 public boolean requestChildRectangleOnScreen(View child, 7693 Rect rect, 7694 boolean immediate) { 7695 if (mNativeClass == 0) { 7696 return false; 7697 } 7698 // don't scroll while in zoom animation. When it is done, we will adjust 7699 // the necessary components (e.g., WebTextView if it is in editing mode) 7700 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7701 return false; 7702 } 7703 7704 rect.offset(child.getLeft() - child.getScrollX(), 7705 child.getTop() - child.getScrollY()); 7706 7707 Rect content = new Rect(viewToContentX(mScrollX), 7708 viewToContentY(mScrollY), 7709 viewToContentX(mScrollX + getWidth() 7710 - getVerticalScrollbarWidth()), 7711 viewToContentY(mScrollY + getViewHeightWithTitle())); 7712 content = nativeSubtractLayers(content); 7713 int screenTop = contentToViewY(content.top); 7714 int screenBottom = contentToViewY(content.bottom); 7715 int height = screenBottom - screenTop; 7716 int scrollYDelta = 0; 7717 7718 if (rect.bottom > screenBottom) { 7719 int oneThirdOfScreenHeight = height / 3; 7720 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7721 // If the rectangle is too tall to fit in the bottom two thirds 7722 // of the screen, place it at the top. 7723 scrollYDelta = rect.top - screenTop; 7724 } else { 7725 // If the rectangle will still fit on screen, we want its 7726 // top to be in the top third of the screen. 7727 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7728 } 7729 } else if (rect.top < screenTop) { 7730 scrollYDelta = rect.top - screenTop; 7731 } 7732 7733 int screenLeft = contentToViewX(content.left); 7734 int screenRight = contentToViewX(content.right); 7735 int width = screenRight - screenLeft; 7736 int scrollXDelta = 0; 7737 7738 if (rect.right > screenRight && rect.left > screenLeft) { 7739 if (rect.width() > width) { 7740 scrollXDelta += (rect.left - screenLeft); 7741 } else { 7742 scrollXDelta += (rect.right - screenRight); 7743 } 7744 } else if (rect.left < screenLeft) { 7745 scrollXDelta -= (screenLeft - rect.left); 7746 } 7747 7748 if ((scrollYDelta | scrollXDelta) != 0) { 7749 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7750 } 7751 7752 return false; 7753 } 7754 7755 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7756 String replace, int newStart, int newEnd) { 7757 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7758 arg.mReplace = replace; 7759 arg.mNewStart = newStart; 7760 arg.mNewEnd = newEnd; 7761 mTextGeneration++; 7762 arg.mTextGeneration = mTextGeneration; 7763 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7764 } 7765 7766 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7767 // check if mWebViewCore has been destroyed 7768 if (mWebViewCore == null) { 7769 return; 7770 } 7771 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7772 arg.mEvent = event; 7773 arg.mCurrentText = currentText; 7774 // Increase our text generation number, and pass it to webcore thread 7775 mTextGeneration++; 7776 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7777 // WebKit's document state is not saved until about to leave the page. 7778 // To make sure the host application, like Browser, has the up to date 7779 // document state when it goes to background, we force to save the 7780 // document state. 7781 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7782 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7783 cursorData(), 1000); 7784 } 7785 7786 /** 7787 * @hide 7788 */ 7789 public synchronized WebViewCore getWebViewCore() { 7790 return mWebViewCore; 7791 } 7792 7793 /** 7794 * Used only by TouchEventQueue to store pending touch events. 7795 */ 7796 private static class QueuedTouch { 7797 long mSequence; 7798 MotionEvent mEvent; // Optional 7799 TouchEventData mTed; // Optional 7800 7801 QueuedTouch mNext; 7802 7803 public QueuedTouch set(TouchEventData ted) { 7804 mSequence = ted.mSequence; 7805 mTed = ted; 7806 mEvent = null; 7807 mNext = null; 7808 return this; 7809 } 7810 7811 public QueuedTouch set(MotionEvent ev, long sequence) { 7812 mEvent = MotionEvent.obtain(ev); 7813 mSequence = sequence; 7814 mTed = null; 7815 mNext = null; 7816 return this; 7817 } 7818 7819 public QueuedTouch add(QueuedTouch other) { 7820 if (other.mSequence < mSequence) { 7821 other.mNext = this; 7822 return other; 7823 } 7824 7825 QueuedTouch insertAt = this; 7826 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7827 insertAt = insertAt.mNext; 7828 } 7829 other.mNext = insertAt.mNext; 7830 insertAt.mNext = other; 7831 return this; 7832 } 7833 } 7834 7835 /** 7836 * WebView handles touch events asynchronously since some events must be passed to WebKit 7837 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7838 * of which path they take to ensure that no events are ever processed out of order 7839 * by WebView. 7840 */ 7841 private class TouchEventQueue { 7842 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7843 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7844 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7845 7846 // Events waiting to be processed. 7847 private QueuedTouch mTouchEventQueue; 7848 7849 // Known events that are waiting on a response before being enqueued. 7850 private QueuedTouch mPreQueue; 7851 7852 // Pool of QueuedTouch objects saved for later use. 7853 private QueuedTouch mQueuedTouchRecycleBin; 7854 private int mQueuedTouchRecycleCount; 7855 7856 private long mLastEventTime = Long.MAX_VALUE; 7857 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7858 7859 // milliseconds until we abandon hope of getting all of a previous gesture 7860 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7861 7862 private QueuedTouch obtainQueuedTouch() { 7863 if (mQueuedTouchRecycleBin != null) { 7864 QueuedTouch result = mQueuedTouchRecycleBin; 7865 mQueuedTouchRecycleBin = result.mNext; 7866 mQueuedTouchRecycleCount--; 7867 return result; 7868 } 7869 return new QueuedTouch(); 7870 } 7871 7872 /** 7873 * Allow events with any currently missing sequence numbers to be skipped in processing. 7874 */ 7875 public void ignoreCurrentlyMissingEvents() { 7876 mIgnoreUntilSequence = mNextTouchSequence; 7877 7878 // Run any events we have available and complete, pre-queued or otherwise. 7879 runQueuedAndPreQueuedEvents(); 7880 } 7881 7882 private void runQueuedAndPreQueuedEvents() { 7883 QueuedTouch qd = mPreQueue; 7884 boolean fromPreQueue = true; 7885 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7886 handleQueuedTouch(qd); 7887 QueuedTouch recycleMe = qd; 7888 if (fromPreQueue) { 7889 mPreQueue = qd.mNext; 7890 } else { 7891 mTouchEventQueue = qd.mNext; 7892 } 7893 recycleQueuedTouch(recycleMe); 7894 mLastHandledTouchSequence++; 7895 7896 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7897 long nextQueued = mTouchEventQueue != null ? 7898 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7899 fromPreQueue = nextPre < nextQueued; 7900 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7901 } 7902 } 7903 7904 /** 7905 * Add a TouchEventData to the pre-queue. 7906 * 7907 * An event in the pre-queue is an event that we know about that 7908 * has been sent to webkit, but that we haven't received back and 7909 * enqueued into the normal touch queue yet. If webkit ever times 7910 * out and we need to ignore currently missing events, we'll run 7911 * events from the pre-queue to patch the holes. 7912 * 7913 * @param ted TouchEventData to pre-queue 7914 */ 7915 public void preQueueTouchEventData(TouchEventData ted) { 7916 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7917 if (mPreQueue == null) { 7918 mPreQueue = newTouch; 7919 } else { 7920 QueuedTouch insertionPoint = mPreQueue; 7921 while (insertionPoint.mNext != null && 7922 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7923 insertionPoint = insertionPoint.mNext; 7924 } 7925 newTouch.mNext = insertionPoint.mNext; 7926 insertionPoint.mNext = newTouch; 7927 } 7928 } 7929 7930 private void recycleQueuedTouch(QueuedTouch qd) { 7931 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7932 qd.mNext = mQueuedTouchRecycleBin; 7933 mQueuedTouchRecycleBin = qd; 7934 mQueuedTouchRecycleCount++; 7935 } 7936 } 7937 7938 /** 7939 * Reset the touch event queue. This will dump any pending events 7940 * and reset the sequence numbering. 7941 */ 7942 public void reset() { 7943 mNextTouchSequence = Long.MIN_VALUE + 1; 7944 mLastHandledTouchSequence = Long.MIN_VALUE; 7945 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7946 while (mTouchEventQueue != null) { 7947 QueuedTouch recycleMe = mTouchEventQueue; 7948 mTouchEventQueue = mTouchEventQueue.mNext; 7949 recycleQueuedTouch(recycleMe); 7950 } 7951 while (mPreQueue != null) { 7952 QueuedTouch recycleMe = mPreQueue; 7953 mPreQueue = mPreQueue.mNext; 7954 recycleQueuedTouch(recycleMe); 7955 } 7956 } 7957 7958 /** 7959 * Return the next valid sequence number for tagging incoming touch events. 7960 * @return The next touch event sequence number 7961 */ 7962 public long nextTouchSequence() { 7963 return mNextTouchSequence++; 7964 } 7965 7966 /** 7967 * Enqueue a touch event in the form of TouchEventData. 7968 * The sequence number will be read from the mSequence field of the argument. 7969 * 7970 * If the touch event's sequence number is the next in line to be processed, it will 7971 * be handled before this method returns. Any subsequent events that have already 7972 * been queued will also be processed in their proper order. 7973 * 7974 * @param ted Touch data to be processed in order. 7975 * @return true if the event was processed before returning, false if it was just enqueued. 7976 */ 7977 public boolean enqueueTouchEvent(TouchEventData ted) { 7978 // Remove from the pre-queue if present 7979 QueuedTouch preQueue = mPreQueue; 7980 if (preQueue != null) { 7981 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7982 // if it was present in the pre-queue, and removed from the pre-queue itself. 7983 if (preQueue.mSequence == ted.mSequence) { 7984 mPreQueue = preQueue.mNext; 7985 } else { 7986 QueuedTouch prev = preQueue; 7987 preQueue = null; 7988 while (prev.mNext != null) { 7989 if (prev.mNext.mSequence == ted.mSequence) { 7990 preQueue = prev.mNext; 7991 prev.mNext = preQueue.mNext; 7992 break; 7993 } else { 7994 prev = prev.mNext; 7995 } 7996 } 7997 } 7998 } 7999 8000 if (ted.mSequence < mLastHandledTouchSequence) { 8001 // Stale event and we already moved on; drop it. (Should not be common.) 8002 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8003 " received from webcore; ignoring"); 8004 return false; 8005 } 8006 8007 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8008 return false; 8009 } 8010 8011 // dropStaleGestures above might have fast-forwarded us to 8012 // an event we have already. 8013 runNextQueuedEvents(); 8014 8015 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8016 if (preQueue != null) { 8017 recycleQueuedTouch(preQueue); 8018 preQueue = null; 8019 } 8020 handleQueuedTouchEventData(ted); 8021 8022 mLastHandledTouchSequence++; 8023 8024 // Do we have any more? Run them if so. 8025 runNextQueuedEvents(); 8026 } else { 8027 // Reuse the pre-queued object if we had it. 8028 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8029 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8030 } 8031 return true; 8032 } 8033 8034 /** 8035 * Enqueue a touch event in the form of a MotionEvent from the framework. 8036 * 8037 * If the touch event's sequence number is the next in line to be processed, it will 8038 * be handled before this method returns. Any subsequent events that have already 8039 * been queued will also be processed in their proper order. 8040 * 8041 * @param ev MotionEvent to be processed in order 8042 */ 8043 public void enqueueTouchEvent(MotionEvent ev) { 8044 final long sequence = nextTouchSequence(); 8045 8046 if (dropStaleGestures(ev, sequence)) { 8047 return; 8048 } 8049 8050 // dropStaleGestures above might have fast-forwarded us to 8051 // an event we have already. 8052 runNextQueuedEvents(); 8053 8054 if (mLastHandledTouchSequence + 1 == sequence) { 8055 handleQueuedMotionEvent(ev); 8056 8057 mLastHandledTouchSequence++; 8058 8059 // Do we have any more? Run them if so. 8060 runNextQueuedEvents(); 8061 } else { 8062 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8063 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8064 } 8065 } 8066 8067 private void runNextQueuedEvents() { 8068 QueuedTouch qd = mTouchEventQueue; 8069 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8070 handleQueuedTouch(qd); 8071 QueuedTouch recycleMe = qd; 8072 qd = qd.mNext; 8073 recycleQueuedTouch(recycleMe); 8074 mLastHandledTouchSequence++; 8075 } 8076 mTouchEventQueue = qd; 8077 } 8078 8079 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8080 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8081 // This is to make sure that we don't attempt to process a tap 8082 // or long press when webkit takes too long to get back to us. 8083 // The movement will be properly confirmed when we process the 8084 // enqueued event later. 8085 final int dx = Math.round(ev.getX()) - mLastTouchX; 8086 final int dy = Math.round(ev.getY()) - mLastTouchY; 8087 if (dx * dx + dy * dy > mTouchSlopSquare) { 8088 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8089 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8090 } 8091 } 8092 8093 if (mTouchEventQueue == null) { 8094 return sequence <= mLastHandledTouchSequence; 8095 } 8096 8097 // If we have a new down event and it's been a while since the last event 8098 // we saw, catch up as best we can and keep going. 8099 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8100 long eventTime = ev.getEventTime(); 8101 long lastHandledEventTime = mLastEventTime; 8102 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8103 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8104 "Catching up."); 8105 runQueuedAndPreQueuedEvents(); 8106 8107 // Drop leftovers that we truly don't have. 8108 QueuedTouch qd = mTouchEventQueue; 8109 while (qd != null && qd.mSequence < sequence) { 8110 QueuedTouch recycleMe = qd; 8111 qd = qd.mNext; 8112 recycleQueuedTouch(recycleMe); 8113 } 8114 mTouchEventQueue = qd; 8115 mLastHandledTouchSequence = sequence - 1; 8116 } 8117 } 8118 8119 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8120 QueuedTouch qd = mTouchEventQueue; 8121 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8122 QueuedTouch recycleMe = qd; 8123 qd = qd.mNext; 8124 recycleQueuedTouch(recycleMe); 8125 } 8126 mTouchEventQueue = qd; 8127 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8128 } 8129 8130 if (mPreQueue != null) { 8131 // Drop stale prequeued events 8132 QueuedTouch qd = mPreQueue; 8133 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8134 QueuedTouch recycleMe = qd; 8135 qd = qd.mNext; 8136 recycleQueuedTouch(recycleMe); 8137 } 8138 mPreQueue = qd; 8139 } 8140 8141 return sequence <= mLastHandledTouchSequence; 8142 } 8143 8144 private void handleQueuedTouch(QueuedTouch qt) { 8145 if (qt.mTed != null) { 8146 handleQueuedTouchEventData(qt.mTed); 8147 } else { 8148 handleQueuedMotionEvent(qt.mEvent); 8149 qt.mEvent.recycle(); 8150 } 8151 } 8152 8153 private void handleQueuedMotionEvent(MotionEvent ev) { 8154 mLastEventTime = ev.getEventTime(); 8155 int action = ev.getActionMasked(); 8156 if (ev.getPointerCount() > 1) { // Multi-touch 8157 handleMultiTouchInWebView(ev); 8158 } else { 8159 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8160 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8161 // ScaleGestureDetector needs a consistent event stream to operate properly. 8162 // It won't take any action with fewer than two pointers, but it needs to 8163 // update internal bookkeeping state. 8164 detector.onTouchEvent(ev); 8165 } 8166 8167 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8168 } 8169 } 8170 8171 private void handleQueuedTouchEventData(TouchEventData ted) { 8172 if (ted.mMotionEvent != null) { 8173 mLastEventTime = ted.mMotionEvent.getEventTime(); 8174 } 8175 if (!ted.mReprocess) { 8176 if (ted.mAction == MotionEvent.ACTION_DOWN 8177 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8178 // if prevent default is called from WebCore, UI 8179 // will not handle the rest of the touch events any 8180 // more. 8181 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8182 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8183 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8184 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8185 // the return for the first ACTION_MOVE will decide 8186 // whether UI will handle touch or not. Currently no 8187 // support for alternating prevent default 8188 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8189 : PREVENT_DEFAULT_NO; 8190 } 8191 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8192 mTouchHighlightRegion.setEmpty(); 8193 } 8194 } else { 8195 if (ted.mPoints.length > 1) { // multi-touch 8196 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8197 mPreventDefault = PREVENT_DEFAULT_NO; 8198 handleMultiTouchInWebView(ted.mMotionEvent); 8199 } else { 8200 mPreventDefault = PREVENT_DEFAULT_YES; 8201 } 8202 return; 8203 } 8204 8205 // prevent default is not called in WebCore, so the 8206 // message needs to be reprocessed in UI 8207 if (!ted.mNativeResult) { 8208 // Following is for single touch. 8209 switch (ted.mAction) { 8210 case MotionEvent.ACTION_DOWN: 8211 mLastDeferTouchX = ted.mPointsInView[0].x; 8212 mLastDeferTouchY = ted.mPointsInView[0].y; 8213 mDeferTouchMode = TOUCH_INIT_MODE; 8214 break; 8215 case MotionEvent.ACTION_MOVE: { 8216 // no snapping in defer process 8217 int x = ted.mPointsInView[0].x; 8218 int y = ted.mPointsInView[0].y; 8219 8220 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8221 mDeferTouchMode = TOUCH_DRAG_MODE; 8222 mLastDeferTouchX = x; 8223 mLastDeferTouchY = y; 8224 startScrollingLayer(x, y); 8225 startDrag(); 8226 } 8227 int deltaX = pinLocX((int) (mScrollX 8228 + mLastDeferTouchX - x)) 8229 - mScrollX; 8230 int deltaY = pinLocY((int) (mScrollY 8231 + mLastDeferTouchY - y)) 8232 - mScrollY; 8233 doDrag(deltaX, deltaY); 8234 if (deltaX != 0) mLastDeferTouchX = x; 8235 if (deltaY != 0) mLastDeferTouchY = y; 8236 break; 8237 } 8238 case MotionEvent.ACTION_UP: 8239 case MotionEvent.ACTION_CANCEL: 8240 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8241 // no fling in defer process 8242 mScroller.springBack(mScrollX, mScrollY, 0, 8243 computeMaxScrollX(), 0, 8244 computeMaxScrollY()); 8245 invalidate(); 8246 WebViewCore.resumePriority(); 8247 WebViewCore.resumeUpdatePicture(mWebViewCore); 8248 } 8249 mDeferTouchMode = TOUCH_DONE_MODE; 8250 break; 8251 case WebViewCore.ACTION_DOUBLETAP: 8252 // doDoubleTap() needs mLastTouchX/Y as anchor 8253 mLastDeferTouchX = ted.mPointsInView[0].x; 8254 mLastDeferTouchY = ted.mPointsInView[0].y; 8255 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8256 mDeferTouchMode = TOUCH_DONE_MODE; 8257 break; 8258 case WebViewCore.ACTION_LONGPRESS: 8259 HitTestResult hitTest = getHitTestResult(); 8260 if (hitTest != null && hitTest.mType 8261 != HitTestResult.UNKNOWN_TYPE) { 8262 performLongClick(); 8263 } 8264 mDeferTouchMode = TOUCH_DONE_MODE; 8265 break; 8266 } 8267 } 8268 } 8269 } 8270 } 8271 8272 //------------------------------------------------------------------------- 8273 // Methods can be called from a separate thread, like WebViewCore 8274 // If it needs to call the View system, it has to send message. 8275 //------------------------------------------------------------------------- 8276 8277 /** 8278 * General handler to receive message coming from webkit thread 8279 */ 8280 class PrivateHandler extends Handler { 8281 @Override 8282 public void handleMessage(Message msg) { 8283 // exclude INVAL_RECT_MSG_ID since it is frequently output 8284 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8285 if (msg.what >= FIRST_PRIVATE_MSG_ID 8286 && msg.what <= LAST_PRIVATE_MSG_ID) { 8287 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8288 - FIRST_PRIVATE_MSG_ID]); 8289 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8290 && msg.what <= LAST_PACKAGE_MSG_ID) { 8291 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8292 - FIRST_PACKAGE_MSG_ID]); 8293 } else { 8294 Log.v(LOGTAG, Integer.toString(msg.what)); 8295 } 8296 } 8297 if (mWebViewCore == null) { 8298 // after WebView's destroy() is called, skip handling messages. 8299 return; 8300 } 8301 if (mBlockWebkitViewMessages 8302 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8303 // Blocking messages from webkit 8304 return; 8305 } 8306 switch (msg.what) { 8307 case REMEMBER_PASSWORD: { 8308 mDatabase.setUsernamePassword( 8309 msg.getData().getString("host"), 8310 msg.getData().getString("username"), 8311 msg.getData().getString("password")); 8312 ((Message) msg.obj).sendToTarget(); 8313 break; 8314 } 8315 case NEVER_REMEMBER_PASSWORD: { 8316 mDatabase.setUsernamePassword( 8317 msg.getData().getString("host"), null, null); 8318 ((Message) msg.obj).sendToTarget(); 8319 break; 8320 } 8321 case PREVENT_DEFAULT_TIMEOUT: { 8322 // if timeout happens, cancel it so that it won't block UI 8323 // to continue handling touch events 8324 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8325 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8326 || (msg.arg1 == MotionEvent.ACTION_MOVE 8327 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8328 cancelWebCoreTouchEvent( 8329 viewToContentX(mLastTouchX + mScrollX), 8330 viewToContentY(mLastTouchY + mScrollY), 8331 true); 8332 } 8333 break; 8334 } 8335 case SCROLL_SELECT_TEXT: { 8336 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8337 mSentAutoScrollMessage = false; 8338 break; 8339 } 8340 if (mScrollingLayer == 0) { 8341 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8342 } else { 8343 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8344 mScrollingLayerRect.top + mAutoScrollY); 8345 } 8346 sendEmptyMessageDelayed( 8347 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8348 break; 8349 } 8350 case UPDATE_SELECTION: { 8351 if (mTouchMode == TOUCH_INIT_MODE 8352 || mTouchMode == TOUCH_SHORTPRESS_MODE 8353 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8354 updateSelection(); 8355 } 8356 break; 8357 } 8358 case SWITCH_TO_SHORTPRESS: { 8359 mInitialHitTestResult = null; // set by updateSelection() 8360 if (mTouchMode == TOUCH_INIT_MODE) { 8361 if (!getSettings().supportTouchOnly() 8362 && mPreventDefault != PREVENT_DEFAULT_YES) { 8363 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8364 updateSelection(); 8365 } else { 8366 // set to TOUCH_SHORTPRESS_MODE so that it won't 8367 // trigger double tap any more 8368 mTouchMode = TOUCH_SHORTPRESS_MODE; 8369 } 8370 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8371 mTouchMode = TOUCH_DONE_MODE; 8372 } 8373 break; 8374 } 8375 case SWITCH_TO_LONGPRESS: { 8376 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 8377 removeTouchHighlight(); 8378 } 8379 if (inFullScreenMode() || mDeferTouchProcess) { 8380 TouchEventData ted = new TouchEventData(); 8381 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8382 ted.mIds = new int[1]; 8383 ted.mIds[0] = 0; 8384 ted.mPoints = new Point[1]; 8385 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8386 viewToContentY(mLastTouchY + mScrollY)); 8387 ted.mPointsInView = new Point[1]; 8388 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8389 // metaState for long press is tricky. Should it be the 8390 // state when the press started or when the press was 8391 // released? Or some intermediary key state? For 8392 // simplicity for now, we don't set it. 8393 ted.mMetaState = 0; 8394 ted.mReprocess = mDeferTouchProcess; 8395 ted.mNativeLayer = nativeScrollableLayer( 8396 ted.mPoints[0].x, ted.mPoints[0].y, 8397 ted.mNativeLayerRect, null); 8398 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8399 mTouchEventQueue.preQueueTouchEventData(ted); 8400 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8401 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8402 mTouchMode = TOUCH_DONE_MODE; 8403 performLongClick(); 8404 } 8405 break; 8406 } 8407 case RELEASE_SINGLE_TAP: { 8408 doShortPress(); 8409 break; 8410 } 8411 case SCROLL_TO_MSG_ID: { 8412 // arg1 = animate, arg2 = onlyIfImeIsShowing 8413 // obj = Point(x, y) 8414 if (msg.arg2 == 1) { 8415 // This scroll is intended to bring the textfield into 8416 // view, but is only necessary if the IME is showing 8417 InputMethodManager imm = InputMethodManager.peekInstance(); 8418 if (imm == null || !imm.isAcceptingText() 8419 || (!imm.isActive(WebView.this) && (!inEditingMode() 8420 || !imm.isActive(mWebTextView)))) { 8421 break; 8422 } 8423 } 8424 final Point p = (Point) msg.obj; 8425 if (msg.arg1 == 1) { 8426 spawnContentScrollTo(p.x, p.y); 8427 } else { 8428 setContentScrollTo(p.x, p.y); 8429 } 8430 break; 8431 } 8432 case UPDATE_ZOOM_RANGE: { 8433 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8434 // mScrollX contains the new minPrefWidth 8435 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8436 break; 8437 } 8438 case REPLACE_BASE_CONTENT: { 8439 nativeReplaceBaseContent(msg.arg1); 8440 break; 8441 } 8442 case NEW_PICTURE_MSG_ID: { 8443 // called for new content 8444 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8445 setNewPicture(draw, true); 8446 break; 8447 } 8448 case WEBCORE_INITIALIZED_MSG_ID: 8449 // nativeCreate sets mNativeClass to a non-zero value 8450 String drawableDir = BrowserFrame.getRawResFilename( 8451 BrowserFrame.DRAWABLEDIR, mContext); 8452 WindowManager windowManager = 8453 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8454 Display display = windowManager.getDefaultDisplay(); 8455 nativeCreate(msg.arg1, drawableDir, 8456 ActivityManager.isHighEndGfx(display)); 8457 if (mDelaySetPicture != null) { 8458 setNewPicture(mDelaySetPicture, true); 8459 mDelaySetPicture = null; 8460 } 8461 if (mIsPaused) { 8462 nativeSetPauseDrawing(mNativeClass, true); 8463 } 8464 break; 8465 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8466 // Make sure that the textfield is currently focused 8467 // and representing the same node as the pointer. 8468 if (inEditingMode() && 8469 mWebTextView.isSameTextField(msg.arg1)) { 8470 if (msg.arg2 == mTextGeneration) { 8471 String text = (String) msg.obj; 8472 if (null == text) { 8473 text = ""; 8474 } 8475 mWebTextView.setTextAndKeepSelection(text); 8476 } 8477 } 8478 break; 8479 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8480 displaySoftKeyboard(true); 8481 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8482 case UPDATE_TEXT_SELECTION_MSG_ID: 8483 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8484 (WebViewCore.TextSelectionData) msg.obj); 8485 break; 8486 case FORM_DID_BLUR: 8487 if (inEditingMode() 8488 && mWebTextView.isSameTextField(msg.arg1)) { 8489 hideSoftKeyboard(); 8490 } 8491 break; 8492 case RETURN_LABEL: 8493 if (inEditingMode() 8494 && mWebTextView.isSameTextField(msg.arg1)) { 8495 mWebTextView.setHint((String) msg.obj); 8496 InputMethodManager imm 8497 = InputMethodManager.peekInstance(); 8498 // The hint is propagated to the IME in 8499 // onCreateInputConnection. If the IME is already 8500 // active, restart it so that its hint text is updated. 8501 if (imm != null && imm.isActive(mWebTextView)) { 8502 imm.restartInput(mWebTextView); 8503 } 8504 } 8505 break; 8506 case UNHANDLED_NAV_KEY: 8507 navHandledKey(msg.arg1, 1, false, 0); 8508 break; 8509 case UPDATE_TEXT_ENTRY_MSG_ID: 8510 // this is sent after finishing resize in WebViewCore. Make 8511 // sure the text edit box is still on the screen. 8512 if (inEditingMode() && nativeCursorIsTextInput()) { 8513 updateWebTextViewPosition(); 8514 } 8515 break; 8516 case CLEAR_TEXT_ENTRY: 8517 clearTextEntry(); 8518 break; 8519 case INVAL_RECT_MSG_ID: { 8520 Rect r = (Rect)msg.obj; 8521 if (r == null) { 8522 invalidate(); 8523 } else { 8524 // we need to scale r from content into view coords, 8525 // which viewInvalidate() does for us 8526 viewInvalidate(r.left, r.top, r.right, r.bottom); 8527 } 8528 break; 8529 } 8530 case REQUEST_FORM_DATA: 8531 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8532 if (mWebTextView.isSameTextField(msg.arg1)) { 8533 mWebTextView.setAdapterCustom(adapter); 8534 } 8535 break; 8536 8537 case LONG_PRESS_CENTER: 8538 // as this is shared by keydown and trackballdown, reset all 8539 // the states 8540 mGotCenterDown = false; 8541 mTrackballDown = false; 8542 performLongClick(); 8543 break; 8544 8545 case WEBCORE_NEED_TOUCH_EVENTS: 8546 mForwardTouchEvents = (msg.arg1 != 0); 8547 break; 8548 8549 case PREVENT_TOUCH_ID: 8550 if (inFullScreenMode()) { 8551 break; 8552 } 8553 TouchEventData ted = (TouchEventData) msg.obj; 8554 8555 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8556 // WebCore is responding to us; remove pending timeout. 8557 // It will be re-posted when needed. 8558 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8559 } 8560 break; 8561 8562 case REQUEST_KEYBOARD: 8563 if (msg.arg1 == 0) { 8564 hideSoftKeyboard(); 8565 } else { 8566 displaySoftKeyboard(false); 8567 } 8568 break; 8569 8570 case FIND_AGAIN: 8571 // Ignore if find has been dismissed. 8572 if (mFindIsUp && mFindCallback != null) { 8573 mFindCallback.findAll(); 8574 } 8575 break; 8576 8577 case DRAG_HELD_MOTIONLESS: 8578 mHeldMotionless = MOTIONLESS_TRUE; 8579 invalidate(); 8580 // fall through to keep scrollbars awake 8581 8582 case AWAKEN_SCROLL_BARS: 8583 if (mTouchMode == TOUCH_DRAG_MODE 8584 && mHeldMotionless == MOTIONLESS_TRUE) { 8585 awakenScrollBars(ViewConfiguration 8586 .getScrollDefaultDelay(), false); 8587 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8588 .obtainMessage(AWAKEN_SCROLL_BARS), 8589 ViewConfiguration.getScrollDefaultDelay()); 8590 } 8591 break; 8592 8593 case DO_MOTION_UP: 8594 doMotionUp(msg.arg1, msg.arg2); 8595 break; 8596 8597 case SCREEN_ON: 8598 setKeepScreenOn(msg.arg1 == 1); 8599 break; 8600 8601 case ENTER_FULLSCREEN_VIDEO: 8602 int layerId = msg.arg1; 8603 8604 String url = (String) msg.obj; 8605 if (mHTML5VideoViewProxy != null) { 8606 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8607 } 8608 break; 8609 8610 case SHOW_FULLSCREEN: { 8611 View view = (View) msg.obj; 8612 int orientation = msg.arg1; 8613 int npp = msg.arg2; 8614 8615 if (inFullScreenMode()) { 8616 Log.w(LOGTAG, "Should not have another full screen."); 8617 dismissFullScreenMode(); 8618 } 8619 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8620 mFullScreenHolder.setContentView(view); 8621 mFullScreenHolder.show(); 8622 8623 break; 8624 } 8625 case HIDE_FULLSCREEN: 8626 dismissFullScreenMode(); 8627 break; 8628 8629 case DOM_FOCUS_CHANGED: 8630 if (inEditingMode()) { 8631 nativeClearCursor(); 8632 rebuildWebTextView(); 8633 } 8634 break; 8635 8636 case SHOW_RECT_MSG_ID: { 8637 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8638 int x = mScrollX; 8639 int left = contentToViewX(data.mLeft); 8640 int width = contentToViewDimension(data.mWidth); 8641 int maxWidth = contentToViewDimension(data.mContentWidth); 8642 int viewWidth = getViewWidth(); 8643 if (width < viewWidth) { 8644 // center align 8645 x += left + width / 2 - mScrollX - viewWidth / 2; 8646 } else { 8647 x += (int) (left + data.mXPercentInDoc * width 8648 - mScrollX - data.mXPercentInView * viewWidth); 8649 } 8650 if (DebugFlags.WEB_VIEW) { 8651 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8652 width + ",maxWidth=" + maxWidth + 8653 ",viewWidth=" + viewWidth + ",x=" 8654 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8655 ",xPercentInView=" + data.mXPercentInView+ ")"); 8656 } 8657 // use the passing content width to cap x as the current 8658 // mContentWidth may not be updated yet 8659 x = Math.max(0, 8660 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8661 int top = contentToViewY(data.mTop); 8662 int height = contentToViewDimension(data.mHeight); 8663 int maxHeight = contentToViewDimension(data.mContentHeight); 8664 int viewHeight = getViewHeight(); 8665 int y = (int) (top + data.mYPercentInDoc * height - 8666 data.mYPercentInView * viewHeight); 8667 if (DebugFlags.WEB_VIEW) { 8668 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8669 height + ",maxHeight=" + maxHeight + 8670 ",viewHeight=" + viewHeight + ",y=" 8671 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8672 ",yPercentInView=" + data.mYPercentInView+ ")"); 8673 } 8674 // use the passing content height to cap y as the current 8675 // mContentHeight may not be updated yet 8676 y = Math.max(0, 8677 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8678 // We need to take into account the visible title height 8679 // when scrolling since y is an absolute view position. 8680 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8681 scrollTo(x, y); 8682 } 8683 break; 8684 8685 case CENTER_FIT_RECT: 8686 centerFitRect((Rect)msg.obj); 8687 break; 8688 8689 case SET_SCROLLBAR_MODES: 8690 mHorizontalScrollBarMode = msg.arg1; 8691 mVerticalScrollBarMode = msg.arg2; 8692 break; 8693 8694 case SELECTION_STRING_CHANGED: 8695 if (mAccessibilityInjector != null) { 8696 String selectionString = (String) msg.obj; 8697 mAccessibilityInjector.onSelectionStringChange(selectionString); 8698 } 8699 break; 8700 8701 case SET_TOUCH_HIGHLIGHT_RECTS: 8702 @SuppressWarnings("unchecked") 8703 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8704 setTouchHighlightRects(rects); 8705 break; 8706 8707 case SAVE_WEBARCHIVE_FINISHED: 8708 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8709 if (saveMessage.mCallback != null) { 8710 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8711 } 8712 break; 8713 8714 case SET_AUTOFILLABLE: 8715 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8716 if (mWebTextView != null) { 8717 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8718 rebuildWebTextView(); 8719 } 8720 break; 8721 8722 case AUTOFILL_COMPLETE: 8723 if (mWebTextView != null) { 8724 // Clear the WebTextView adapter when AutoFill finishes 8725 // so that the drop down gets cleared. 8726 mWebTextView.setAdapterCustom(null); 8727 } 8728 break; 8729 8730 case SELECT_AT: 8731 nativeSelectAt(msg.arg1, msg.arg2); 8732 break; 8733 8734 default: 8735 super.handleMessage(msg); 8736 break; 8737 } 8738 } 8739 } 8740 8741 private void setTouchHighlightRects(ArrayList<Rect> rects) { 8742 invalidate(mTouchHighlightRegion.getBounds()); 8743 mTouchHighlightRegion.setEmpty(); 8744 if (rects != null) { 8745 for (Rect rect : rects) { 8746 Rect viewRect = contentToViewRect(rect); 8747 // some sites, like stories in nytimes.com, set 8748 // mouse event handler in the top div. It is not 8749 // user friendly to highlight the div if it covers 8750 // more than half of the screen. 8751 if (viewRect.width() < getWidth() >> 1 8752 || viewRect.height() < getHeight() >> 1) { 8753 mTouchHighlightRegion.union(viewRect); 8754 } else { 8755 Log.w(LOGTAG, "Skip the huge selection rect:" 8756 + viewRect); 8757 } 8758 } 8759 invalidate(mTouchHighlightRegion.getBounds()); 8760 } 8761 } 8762 8763 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8764 * acceleration) */ 8765 protected void pageSwapCallback() { 8766 if (inEditingMode()) { 8767 didUpdateWebTextViewDimensions(ANYWHERE); 8768 } 8769 } 8770 8771 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8772 if (mNativeClass == 0) { 8773 if (mDelaySetPicture != null) { 8774 throw new IllegalStateException("Tried to setNewPicture with" 8775 + " a delay picture already set! (memory leak)"); 8776 } 8777 // Not initialized yet, delay set 8778 mDelaySetPicture = draw; 8779 return; 8780 } 8781 WebViewCore.ViewState viewState = draw.mViewState; 8782 boolean isPictureAfterFirstLayout = viewState != null; 8783 8784 if (updateBaseLayer) { 8785 // Request a callback on pageSwap (to reposition the webtextview) 8786 boolean registerPageSwapCallback = 8787 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8788 8789 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8790 getSettings().getShowVisualIndicator(), 8791 isPictureAfterFirstLayout, registerPageSwapCallback); 8792 } 8793 final Point viewSize = draw.mViewSize; 8794 // We update the layout (i.e. request a layout from the 8795 // view system) if the last view size that we sent to 8796 // WebCore matches the view size of the picture we just 8797 // received in the fixed dimension. 8798 final boolean updateLayout = viewSize.x == mLastWidthSent 8799 && viewSize.y == mLastHeightSent; 8800 // Don't send scroll event for picture coming from webkit, 8801 // since the new picture may cause a scroll event to override 8802 // the saved history scroll position. 8803 mSendScrollEvent = false; 8804 recordNewContentSize(draw.mContentSize.x, 8805 draw.mContentSize.y, updateLayout); 8806 if (isPictureAfterFirstLayout) { 8807 // Reset the last sent data here since dealing with new page. 8808 mLastWidthSent = 0; 8809 mZoomManager.onFirstLayout(draw); 8810 int scrollX = viewState.mShouldStartScrolledRight 8811 ? getContentWidth() : viewState.mScrollX; 8812 int scrollY = viewState.mScrollY; 8813 setContentScrollTo(scrollX, scrollY); 8814 if (!mDrawHistory) { 8815 // As we are on a new page, remove the WebTextView. This 8816 // is necessary for page loads driven by webkit, and in 8817 // particular when the user was on a password field, so 8818 // the WebTextView was visible. 8819 clearTextEntry(); 8820 } 8821 } 8822 mSendScrollEvent = true; 8823 8824 if (DebugFlags.WEB_VIEW) { 8825 Rect b = draw.mInvalRegion.getBounds(); 8826 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8827 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8828 } 8829 invalidateContentRect(draw.mInvalRegion.getBounds()); 8830 8831 if (mPictureListener != null) { 8832 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8833 } 8834 8835 // update the zoom information based on the new picture 8836 mZoomManager.onNewPicture(draw); 8837 8838 if (draw.mFocusSizeChanged && inEditingMode()) { 8839 mFocusSizeChanged = true; 8840 } 8841 if (isPictureAfterFirstLayout) { 8842 mViewManager.postReadyToDrawAll(); 8843 } 8844 } 8845 8846 /** 8847 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8848 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8849 */ 8850 private void updateTextSelectionFromMessage(int nodePointer, 8851 int textGeneration, WebViewCore.TextSelectionData data) { 8852 if (inEditingMode() 8853 && mWebTextView.isSameTextField(nodePointer) 8854 && textGeneration == mTextGeneration) { 8855 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8856 } 8857 } 8858 8859 // Class used to use a dropdown for a <select> element 8860 private class InvokeListBox implements Runnable { 8861 // Whether the listbox allows multiple selection. 8862 private boolean mMultiple; 8863 // Passed in to a list with multiple selection to tell 8864 // which items are selected. 8865 private int[] mSelectedArray; 8866 // Passed in to a list with single selection to tell 8867 // where the initial selection is. 8868 private int mSelection; 8869 8870 private Container[] mContainers; 8871 8872 // Need these to provide stable ids to my ArrayAdapter, 8873 // which normally does not have stable ids. (Bug 1250098) 8874 private class Container extends Object { 8875 /** 8876 * Possible values for mEnabled. Keep in sync with OptionStatus in 8877 * WebViewCore.cpp 8878 */ 8879 final static int OPTGROUP = -1; 8880 final static int OPTION_DISABLED = 0; 8881 final static int OPTION_ENABLED = 1; 8882 8883 String mString; 8884 int mEnabled; 8885 int mId; 8886 8887 @Override 8888 public String toString() { 8889 return mString; 8890 } 8891 } 8892 8893 /** 8894 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8895 * and allow filtering. 8896 */ 8897 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8898 public MyArrayListAdapter() { 8899 super(mContext, 8900 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8901 com.android.internal.R.layout.webview_select_singlechoice, 8902 mContainers); 8903 } 8904 8905 @Override 8906 public View getView(int position, View convertView, 8907 ViewGroup parent) { 8908 // Always pass in null so that we will get a new CheckedTextView 8909 // Otherwise, an item which was previously used as an <optgroup> 8910 // element (i.e. has no check), could get used as an <option> 8911 // element, which needs a checkbox/radio, but it would not have 8912 // one. 8913 convertView = super.getView(position, null, parent); 8914 Container c = item(position); 8915 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8916 // ListView does not draw dividers between disabled and 8917 // enabled elements. Use a LinearLayout to provide dividers 8918 LinearLayout layout = new LinearLayout(mContext); 8919 layout.setOrientation(LinearLayout.VERTICAL); 8920 if (position > 0) { 8921 View dividerTop = new View(mContext); 8922 dividerTop.setBackgroundResource( 8923 android.R.drawable.divider_horizontal_bright); 8924 layout.addView(dividerTop); 8925 } 8926 8927 if (Container.OPTGROUP == c.mEnabled) { 8928 // Currently select_dialog_multichoice uses CheckedTextViews. 8929 // If that changes, the class cast will no longer be valid. 8930 if (mMultiple) { 8931 Assert.assertTrue(convertView instanceof CheckedTextView); 8932 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8933 } 8934 } else { 8935 // c.mEnabled == Container.OPTION_DISABLED 8936 // Draw the disabled element in a disabled state. 8937 convertView.setEnabled(false); 8938 } 8939 8940 layout.addView(convertView); 8941 if (position < getCount() - 1) { 8942 View dividerBottom = new View(mContext); 8943 dividerBottom.setBackgroundResource( 8944 android.R.drawable.divider_horizontal_bright); 8945 layout.addView(dividerBottom); 8946 } 8947 return layout; 8948 } 8949 return convertView; 8950 } 8951 8952 @Override 8953 public boolean hasStableIds() { 8954 // AdapterView's onChanged method uses this to determine whether 8955 // to restore the old state. Return false so that the old (out 8956 // of date) state does not replace the new, valid state. 8957 return false; 8958 } 8959 8960 private Container item(int position) { 8961 if (position < 0 || position >= getCount()) { 8962 return null; 8963 } 8964 return (Container) getItem(position); 8965 } 8966 8967 @Override 8968 public long getItemId(int position) { 8969 Container item = item(position); 8970 if (item == null) { 8971 return -1; 8972 } 8973 return item.mId; 8974 } 8975 8976 @Override 8977 public boolean areAllItemsEnabled() { 8978 return false; 8979 } 8980 8981 @Override 8982 public boolean isEnabled(int position) { 8983 Container item = item(position); 8984 if (item == null) { 8985 return false; 8986 } 8987 return Container.OPTION_ENABLED == item.mEnabled; 8988 } 8989 } 8990 8991 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8992 mMultiple = true; 8993 mSelectedArray = selected; 8994 8995 int length = array.length; 8996 mContainers = new Container[length]; 8997 for (int i = 0; i < length; i++) { 8998 mContainers[i] = new Container(); 8999 mContainers[i].mString = array[i]; 9000 mContainers[i].mEnabled = enabled[i]; 9001 mContainers[i].mId = i; 9002 } 9003 } 9004 9005 private InvokeListBox(String[] array, int[] enabled, int selection) { 9006 mSelection = selection; 9007 mMultiple = false; 9008 9009 int length = array.length; 9010 mContainers = new Container[length]; 9011 for (int i = 0; i < length; i++) { 9012 mContainers[i] = new Container(); 9013 mContainers[i].mString = array[i]; 9014 mContainers[i].mEnabled = enabled[i]; 9015 mContainers[i].mId = i; 9016 } 9017 } 9018 9019 /* 9020 * Whenever the data set changes due to filtering, this class ensures 9021 * that the checked item remains checked. 9022 */ 9023 private class SingleDataSetObserver extends DataSetObserver { 9024 private long mCheckedId; 9025 private ListView mListView; 9026 private Adapter mAdapter; 9027 9028 /* 9029 * Create a new observer. 9030 * @param id The ID of the item to keep checked. 9031 * @param l ListView for getting and clearing the checked states 9032 * @param a Adapter for getting the IDs 9033 */ 9034 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9035 mCheckedId = id; 9036 mListView = l; 9037 mAdapter = a; 9038 } 9039 9040 @Override 9041 public void onChanged() { 9042 // The filter may have changed which item is checked. Find the 9043 // item that the ListView thinks is checked. 9044 int position = mListView.getCheckedItemPosition(); 9045 long id = mAdapter.getItemId(position); 9046 if (mCheckedId != id) { 9047 // Clear the ListView's idea of the checked item, since 9048 // it is incorrect 9049 mListView.clearChoices(); 9050 // Search for mCheckedId. If it is in the filtered list, 9051 // mark it as checked 9052 int count = mAdapter.getCount(); 9053 for (int i = 0; i < count; i++) { 9054 if (mAdapter.getItemId(i) == mCheckedId) { 9055 mListView.setItemChecked(i, true); 9056 break; 9057 } 9058 } 9059 } 9060 } 9061 } 9062 9063 public void run() { 9064 final ListView listView = (ListView) LayoutInflater.from(mContext) 9065 .inflate(com.android.internal.R.layout.select_dialog, null); 9066 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9067 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9068 .setView(listView).setCancelable(true) 9069 .setInverseBackgroundForced(true); 9070 9071 if (mMultiple) { 9072 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9073 public void onClick(DialogInterface dialog, int which) { 9074 mWebViewCore.sendMessage( 9075 EventHub.LISTBOX_CHOICES, 9076 adapter.getCount(), 0, 9077 listView.getCheckedItemPositions()); 9078 }}); 9079 b.setNegativeButton(android.R.string.cancel, 9080 new DialogInterface.OnClickListener() { 9081 public void onClick(DialogInterface dialog, int which) { 9082 mWebViewCore.sendMessage( 9083 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9084 }}); 9085 } 9086 mListBoxDialog = b.create(); 9087 listView.setAdapter(adapter); 9088 listView.setFocusableInTouchMode(true); 9089 // There is a bug (1250103) where the checks in a ListView with 9090 // multiple items selected are associated with the positions, not 9091 // the ids, so the items do not properly retain their checks when 9092 // filtered. Do not allow filtering on multiple lists until 9093 // that bug is fixed. 9094 9095 listView.setTextFilterEnabled(!mMultiple); 9096 if (mMultiple) { 9097 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9098 int length = mSelectedArray.length; 9099 for (int i = 0; i < length; i++) { 9100 listView.setItemChecked(mSelectedArray[i], true); 9101 } 9102 } else { 9103 listView.setOnItemClickListener(new OnItemClickListener() { 9104 public void onItemClick(AdapterView<?> parent, View v, 9105 int position, long id) { 9106 // Rather than sending the message right away, send it 9107 // after the page regains focus. 9108 mListBoxMessage = Message.obtain(null, 9109 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9110 mListBoxDialog.dismiss(); 9111 mListBoxDialog = null; 9112 } 9113 }); 9114 if (mSelection != -1) { 9115 listView.setSelection(mSelection); 9116 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9117 listView.setItemChecked(mSelection, true); 9118 DataSetObserver observer = new SingleDataSetObserver( 9119 adapter.getItemId(mSelection), listView, adapter); 9120 adapter.registerDataSetObserver(observer); 9121 } 9122 } 9123 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9124 public void onCancel(DialogInterface dialog) { 9125 mWebViewCore.sendMessage( 9126 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9127 mListBoxDialog = null; 9128 } 9129 }); 9130 mListBoxDialog.show(); 9131 } 9132 } 9133 9134 private Message mListBoxMessage; 9135 9136 /* 9137 * Request a dropdown menu for a listbox with multiple selection. 9138 * 9139 * @param array Labels for the listbox. 9140 * @param enabledArray State for each element in the list. See static 9141 * integers in Container class. 9142 * @param selectedArray Which positions are initally selected. 9143 */ 9144 void requestListBox(String[] array, int[] enabledArray, int[] 9145 selectedArray) { 9146 mPrivateHandler.post( 9147 new InvokeListBox(array, enabledArray, selectedArray)); 9148 } 9149 9150 /* 9151 * Request a dropdown menu for a listbox with single selection or a single 9152 * <select> element. 9153 * 9154 * @param array Labels for the listbox. 9155 * @param enabledArray State for each element in the list. See static 9156 * integers in Container class. 9157 * @param selection Which position is initally selected. 9158 */ 9159 void requestListBox(String[] array, int[] enabledArray, int selection) { 9160 mPrivateHandler.post( 9161 new InvokeListBox(array, enabledArray, selection)); 9162 } 9163 9164 // called by JNI 9165 private void sendMoveFocus(int frame, int node) { 9166 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9167 new WebViewCore.CursorData(frame, node, 0, 0)); 9168 } 9169 9170 // called by JNI 9171 private void sendMoveMouse(int frame, int node, int x, int y) { 9172 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9173 new WebViewCore.CursorData(frame, node, x, y)); 9174 } 9175 9176 /* 9177 * Send a mouse move event to the webcore thread. 9178 * 9179 * @param removeFocus Pass true to remove the WebTextView, if present. 9180 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9181 * called by JNI 9182 */ 9183 @SuppressWarnings("unused") 9184 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9185 if (removeFocus) { 9186 clearTextEntry(); 9187 } 9188 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9189 stopPaintingCaret ? 1 : 0, 0, 9190 cursorData()); 9191 } 9192 9193 /** 9194 * Called by JNI to send a message to the webcore thread that the user 9195 * touched the webpage. 9196 * @param touchGeneration Generation number of the touch, to ignore touches 9197 * after a new one has been generated. 9198 * @param frame Pointer to the frame holding the node that was touched. 9199 * @param node Pointer to the node touched. 9200 * @param x x-position of the touch. 9201 * @param y y-position of the touch. 9202 */ 9203 private void sendMotionUp(int touchGeneration, 9204 int frame, int node, int x, int y) { 9205 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9206 touchUpData.mMoveGeneration = touchGeneration; 9207 touchUpData.mFrame = frame; 9208 touchUpData.mNode = node; 9209 touchUpData.mX = x; 9210 touchUpData.mY = y; 9211 touchUpData.mNativeLayer = nativeScrollableLayer( 9212 x, y, touchUpData.mNativeLayerRect, null); 9213 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9214 } 9215 9216 9217 private int getScaledMaxXScroll() { 9218 int width; 9219 if (mHeightCanMeasure == false) { 9220 width = getViewWidth() / 4; 9221 } else { 9222 Rect visRect = new Rect(); 9223 calcOurVisibleRect(visRect); 9224 width = visRect.width() / 2; 9225 } 9226 // FIXME the divisor should be retrieved from somewhere 9227 return viewToContentX(width); 9228 } 9229 9230 private int getScaledMaxYScroll() { 9231 int height; 9232 if (mHeightCanMeasure == false) { 9233 height = getViewHeight() / 4; 9234 } else { 9235 Rect visRect = new Rect(); 9236 calcOurVisibleRect(visRect); 9237 height = visRect.height() / 2; 9238 } 9239 // FIXME the divisor should be retrieved from somewhere 9240 // the closest thing today is hard-coded into ScrollView.java 9241 // (from ScrollView.java, line 363) int maxJump = height/2; 9242 return Math.round(height * mZoomManager.getInvScale()); 9243 } 9244 9245 /** 9246 * Called by JNI to invalidate view 9247 */ 9248 private void viewInvalidate() { 9249 invalidate(); 9250 } 9251 9252 /** 9253 * Pass the key directly to the page. This assumes that 9254 * nativePageShouldHandleShiftAndArrows() returned true. 9255 */ 9256 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9257 int keyEventAction; 9258 int eventHubAction; 9259 if (down) { 9260 keyEventAction = KeyEvent.ACTION_DOWN; 9261 eventHubAction = EventHub.KEY_DOWN; 9262 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9263 } else { 9264 keyEventAction = KeyEvent.ACTION_UP; 9265 eventHubAction = EventHub.KEY_UP; 9266 } 9267 9268 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9269 1, (metaState & KeyEvent.META_SHIFT_ON) 9270 | (metaState & KeyEvent.META_ALT_ON) 9271 | (metaState & KeyEvent.META_SYM_ON) 9272 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9273 mWebViewCore.sendMessage(eventHubAction, event); 9274 } 9275 9276 // return true if the key was handled 9277 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9278 long time) { 9279 if (mNativeClass == 0) { 9280 return false; 9281 } 9282 mInitialHitTestResult = null; 9283 mLastCursorTime = time; 9284 mLastCursorBounds = nativeGetCursorRingBounds(); 9285 boolean keyHandled 9286 = nativeMoveCursor(keyCode, count, noScroll) == false; 9287 if (DebugFlags.WEB_VIEW) { 9288 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9289 + " mLastCursorTime=" + mLastCursorTime 9290 + " handled=" + keyHandled); 9291 } 9292 if (keyHandled == false) { 9293 return keyHandled; 9294 } 9295 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9296 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9297 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9298 // set last touch so that context menu related functions will work 9299 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9300 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9301 if (mHeightCanMeasure == false) { 9302 return keyHandled; 9303 } 9304 Rect visRect = new Rect(); 9305 calcOurVisibleRect(visRect); 9306 Rect outset = new Rect(visRect); 9307 int maxXScroll = visRect.width() / 2; 9308 int maxYScroll = visRect.height() / 2; 9309 outset.inset(-maxXScroll, -maxYScroll); 9310 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9311 return keyHandled; 9312 } 9313 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9314 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9315 maxXScroll); 9316 if (maxH > 0) { 9317 pinScrollBy(maxH, 0, true, 0); 9318 } else { 9319 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9320 -maxXScroll); 9321 if (maxH < 0) { 9322 pinScrollBy(maxH, 0, true, 0); 9323 } 9324 } 9325 if (mLastCursorBounds.isEmpty()) return keyHandled; 9326 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9327 return keyHandled; 9328 } 9329 if (DebugFlags.WEB_VIEW) { 9330 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9331 + contentCursorRingBounds); 9332 } 9333 requestRectangleOnScreen(viewCursorRingBounds); 9334 return keyHandled; 9335 } 9336 9337 /** 9338 * @return Whether accessibility script has been injected. 9339 */ 9340 private boolean accessibilityScriptInjected() { 9341 // TODO: Maybe the injected script should announce its presence in 9342 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9343 // will check that as one of the conditions it looks for 9344 return mAccessibilityScriptInjected; 9345 } 9346 9347 /** 9348 * Set the background color. It's white by default. Pass 9349 * zero to make the view transparent. 9350 * @param color the ARGB color described by Color.java 9351 */ 9352 @Override 9353 public void setBackgroundColor(int color) { 9354 mBackgroundColor = color; 9355 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9356 } 9357 9358 /** 9359 * @deprecated This method is now obsolete. 9360 */ 9361 @Deprecated 9362 public void debugDump() { 9363 checkThread(); 9364 nativeDebugDump(); 9365 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9366 } 9367 9368 /** 9369 * Draw the HTML page into the specified canvas. This call ignores any 9370 * view-specific zoom, scroll offset, or other changes. It does not draw 9371 * any view-specific chrome, such as progress or URL bars. 9372 * 9373 * @hide only needs to be accessible to Browser and testing 9374 */ 9375 public void drawPage(Canvas canvas) { 9376 calcOurContentVisibleRectF(mVisibleContentRect); 9377 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9378 } 9379 9380 /** 9381 * Enable the communication b/t the webView and VideoViewProxy 9382 * 9383 * @hide only used by the Browser 9384 */ 9385 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9386 mHTML5VideoViewProxy = proxy; 9387 } 9388 9389 /** 9390 * Set the time to wait between passing touches to WebCore. See also the 9391 * TOUCH_SENT_INTERVAL member for further discussion. 9392 * 9393 * @hide This is only used by the DRT test application. 9394 */ 9395 public void setTouchInterval(int interval) { 9396 mCurrentTouchInterval = interval; 9397 } 9398 9399 /** 9400 * Update our cache with updatedText. 9401 * @param updatedText The new text to put in our cache. 9402 * @hide 9403 */ 9404 protected void updateCachedTextfield(String updatedText) { 9405 // Also place our generation number so that when we look at the cache 9406 // we recognize that it is up to date. 9407 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9408 } 9409 9410 /*package*/ void autoFillForm(int autoFillQueryId) { 9411 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9412 } 9413 9414 /* package */ ViewManager getViewManager() { 9415 return mViewManager; 9416 } 9417 9418 private static void checkThread() { 9419 if (Looper.myLooper() != Looper.getMainLooper()) { 9420 Throwable throwable = new Throwable( 9421 "Warning: A WebView method was called on thread '" + 9422 Thread.currentThread().getName() + "'. " + 9423 "All WebView methods must be called on the UI thread. " + 9424 "Future versions of WebView may not support use on other threads."); 9425 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9426 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9427 } 9428 } 9429 9430 /** @hide send content invalidate */ 9431 protected void contentInvalidateAll() { 9432 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9433 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9434 } 9435 } 9436 9437 /** @hide call pageSwapCallback upon next page swap */ 9438 protected void registerPageSwapCallback() { 9439 nativeRegisterPageSwapCallback(); 9440 } 9441 9442 /** 9443 * Begin collecting per-tile profiling data 9444 * 9445 * @hide only used by profiling tests 9446 */ 9447 public void tileProfilingStart() { 9448 nativeTileProfilingStart(); 9449 } 9450 /** 9451 * Return per-tile profiling data 9452 * 9453 * @hide only used by profiling tests 9454 */ 9455 public float tileProfilingStop() { 9456 return nativeTileProfilingStop(); 9457 } 9458 9459 /** @hide only used by profiling tests */ 9460 public void tileProfilingClear() { 9461 nativeTileProfilingClear(); 9462 } 9463 /** @hide only used by profiling tests */ 9464 public int tileProfilingNumFrames() { 9465 return nativeTileProfilingNumFrames(); 9466 } 9467 /** @hide only used by profiling tests */ 9468 public int tileProfilingNumTilesInFrame(int frame) { 9469 return nativeTileProfilingNumTilesInFrame(frame); 9470 } 9471 /** @hide only used by profiling tests */ 9472 public int tileProfilingGetInt(int frame, int tile, String key) { 9473 return nativeTileProfilingGetInt(frame, tile, key); 9474 } 9475 /** @hide only used by profiling tests */ 9476 public float tileProfilingGetFloat(int frame, int tile, String key) { 9477 return nativeTileProfilingGetFloat(frame, tile, key); 9478 } 9479 9480 private native int nativeCacheHitFramePointer(); 9481 private native boolean nativeCacheHitIsPlugin(); 9482 private native Rect nativeCacheHitNodeBounds(); 9483 private native int nativeCacheHitNodePointer(); 9484 /* package */ native void nativeClearCursor(); 9485 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 9486 private native int nativeCursorFramePointer(); 9487 private native Rect nativeCursorNodeBounds(); 9488 private native int nativeCursorNodePointer(); 9489 private native boolean nativeCursorIntersects(Rect visibleRect); 9490 private native boolean nativeCursorIsAnchor(); 9491 private native boolean nativeCursorIsTextInput(); 9492 private native Point nativeCursorPosition(); 9493 private native String nativeCursorText(); 9494 /** 9495 * Returns true if the native cursor node says it wants to handle key events 9496 * (ala plugins). This can only be called if mNativeClass is non-zero! 9497 */ 9498 private native boolean nativeCursorWantsKeyEvents(); 9499 private native void nativeDebugDump(); 9500 private native void nativeDestroy(); 9501 9502 /** 9503 * Draw the picture set with a background color and extra. If 9504 * "splitIfNeeded" is true and the return value is not 0, the return value 9505 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9506 * native allocation can be freed. 9507 */ 9508 private native int nativeDraw(Canvas canvas, RectF visibleRect, 9509 int color, int extra, boolean splitIfNeeded); 9510 private native void nativeDumpDisplayTree(String urlOrNull); 9511 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9512 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9513 Rect viewRect, RectF visibleRect, float scale, int extras); 9514 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 9515 RectF visibleRect); 9516 private native void nativeExtendSelection(int x, int y); 9517 private native int nativeFindAll(String findLower, String findUpper, 9518 boolean sameAsLastSearch); 9519 private native void nativeFindNext(boolean forward); 9520 /* package */ native int nativeFocusCandidateFramePointer(); 9521 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9522 /* package */ native boolean nativeFocusCandidateIsPassword(); 9523 private native boolean nativeFocusCandidateIsRtlText(); 9524 private native boolean nativeFocusCandidateIsTextInput(); 9525 /* package */ native int nativeFocusCandidateMaxLength(); 9526 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9527 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 9528 /* package */ native String nativeFocusCandidateName(); 9529 private native Rect nativeFocusCandidateNodeBounds(); 9530 /** 9531 * @return A Rect with left, top, right, bottom set to the corresponding 9532 * padding values in the focus candidate, if it is a textfield/textarea with 9533 * a style. Otherwise return null. This is not actually a rectangle; Rect 9534 * is being used to pass four integers. 9535 */ 9536 private native Rect nativeFocusCandidatePaddingRect(); 9537 /* package */ native int nativeFocusCandidatePointer(); 9538 private native String nativeFocusCandidateText(); 9539 /* package */ native float nativeFocusCandidateTextSize(); 9540 /* package */ native int nativeFocusCandidateLineHeight(); 9541 /** 9542 * Returns an integer corresponding to WebView.cpp::type. 9543 * See WebTextView.setType() 9544 */ 9545 private native int nativeFocusCandidateType(); 9546 private native boolean nativeFocusIsPlugin(); 9547 private native Rect nativeFocusNodeBounds(); 9548 /* package */ native int nativeFocusNodePointer(); 9549 private native Rect nativeGetCursorRingBounds(); 9550 private native String nativeGetSelection(); 9551 private native boolean nativeHasCursorNode(); 9552 private native boolean nativeHasFocusNode(); 9553 private native void nativeHideCursor(); 9554 private native boolean nativeHitSelection(int x, int y); 9555 private native String nativeImageURI(int x, int y); 9556 private native Rect nativeLayerBounds(int layer); 9557 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9558 // return true if the page has been scrolled 9559 private native boolean nativeMotionUp(int x, int y, int slop); 9560 // returns false if it handled the key 9561 private native boolean nativeMoveCursor(int keyCode, int count, 9562 boolean noScroll); 9563 private native int nativeMoveGeneration(); 9564 private native void nativeMoveSelection(int x, int y); 9565 /** 9566 * @return true if the page should get the shift and arrow keys, rather 9567 * than select text/navigation. 9568 * 9569 * If the focus is a plugin, or if the focus and cursor match and are 9570 * a contentEditable element, then the page should handle these keys. 9571 */ 9572 private native boolean nativePageShouldHandleShiftAndArrows(); 9573 private native boolean nativePointInNavCache(int x, int y, int slop); 9574 // Like many other of our native methods, you must make sure that 9575 // mNativeClass is not null before calling this method. 9576 private native void nativeResetSelection(); 9577 private native Point nativeSelectableText(); 9578 private native void nativeSelectAll(); 9579 private native void nativeSelectBestAt(Rect rect); 9580 private native void nativeSelectAt(int x, int y); 9581 private native int nativeSelectionX(); 9582 private native int nativeSelectionY(); 9583 private native int nativeFindIndex(); 9584 private native void nativeSetExtendSelection(); 9585 private native void nativeSetFindIsEmpty(); 9586 private native void nativeSetFindIsUp(boolean isUp); 9587 private native void nativeSetHeightCanMeasure(boolean measure); 9588 private native void nativeSetBaseLayer(int layer, Region invalRegion, 9589 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9590 boolean registerPageSwapCallback); 9591 private native int nativeGetBaseLayer(); 9592 private native void nativeShowCursorTimed(); 9593 private native void nativeReplaceBaseContent(int content); 9594 private native void nativeCopyBaseContentToPicture(Picture pict); 9595 private native boolean nativeHasContent(); 9596 private native void nativeSetSelectionPointer(int nativeInstance, 9597 boolean set, float scale, int x, int y); 9598 private native boolean nativeStartSelection(int x, int y); 9599 private native void nativeStopGL(); 9600 private native Rect nativeSubtractLayers(Rect content); 9601 private native int nativeTextGeneration(); 9602 private native void nativeRegisterPageSwapCallback(); 9603 private native void nativeTileProfilingStart(); 9604 private native float nativeTileProfilingStop(); 9605 private native void nativeTileProfilingClear(); 9606 private native int nativeTileProfilingNumFrames(); 9607 private native int nativeTileProfilingNumTilesInFrame(int frame); 9608 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9609 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9610 // Never call this version except by updateCachedTextfield(String) - 9611 // we always want to pass in our generation number. 9612 private native void nativeUpdateCachedTextfield(String updatedText, 9613 int generation); 9614 private native boolean nativeWordSelection(int x, int y); 9615 // return NO_LEFTEDGE means failure. 9616 static final int NO_LEFTEDGE = -1; 9617 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9618 9619 private native void nativeUseHardwareAccelSkia(boolean enabled); 9620 9621 // Returns a pointer to the scrollable LayerAndroid at the given point. 9622 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9623 Rect scrollBounds); 9624 /** 9625 * Scroll the specified layer. 9626 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9627 * @param newX Destination x position to which to scroll. 9628 * @param newY Destination y position to which to scroll. 9629 * @return True if the layer is successfully scrolled. 9630 */ 9631 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9632 private native void nativeSetIsScrolling(boolean isScrolling); 9633 private native int nativeGetBackgroundColor(); 9634 native boolean nativeSetProperty(String key, String value); 9635 native String nativeGetProperty(String key); 9636 private native void nativeGetTextSelectionRegion(int instance, Region region); 9637 private native void nativeGetSelectionHandles(int instance, int[] handles); 9638 /** 9639 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9640 */ 9641 private static native void nativeOnTrimMemory(int level); 9642 private static native void nativeSetPauseDrawing(int instance, boolean pause); 9643} 9644