WebView.java revision b19c7878cc48746b7dda7ebdf1c85f6a7e6996a3
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.ComponentCallbacks2; 24import android.content.Context; 25import android.content.DialogInterface; 26import android.content.DialogInterface.OnCancelListener; 27import android.content.Intent; 28import android.content.IntentFilter; 29import android.content.pm.PackageInfo; 30import android.content.pm.PackageManager; 31import android.content.res.Configuration; 32import android.database.DataSetObserver; 33import android.graphics.Bitmap; 34import android.graphics.BitmapFactory; 35import android.graphics.BitmapShader; 36import android.graphics.Canvas; 37import android.graphics.Color; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.RegionIterator; 47import android.graphics.Shader; 48import android.graphics.drawable.Drawable; 49import android.net.Proxy; 50import android.net.ProxyProperties; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Looper; 57import android.os.Message; 58import android.os.StrictMode; 59import android.provider.Settings; 60import android.speech.tts.TextToSpeech; 61import android.util.AttributeSet; 62import android.util.EventLog; 63import android.util.Log; 64import android.view.Gravity; 65import android.view.HapticFeedbackConstants; 66import android.view.HardwareCanvas; 67import android.view.InputDevice; 68import android.view.KeyCharacterMap; 69import android.view.KeyEvent; 70import android.view.LayoutInflater; 71import android.view.MotionEvent; 72import android.view.ScaleGestureDetector; 73import android.view.SoundEffectConstants; 74import android.view.VelocityTracker; 75import android.view.View; 76import android.view.ViewConfiguration; 77import android.view.ViewGroup; 78import android.view.ViewParent; 79import android.view.ViewTreeObserver; 80import android.view.accessibility.AccessibilityEvent; 81import android.view.accessibility.AccessibilityManager; 82import android.view.accessibility.AccessibilityNodeInfo; 83import android.view.inputmethod.EditorInfo; 84import android.view.inputmethod.InputConnection; 85import android.view.inputmethod.InputMethodManager; 86import android.webkit.WebTextView.AutoCompleteAdapter; 87import android.webkit.WebViewCore.DrawData; 88import android.webkit.WebViewCore.EventHub; 89import android.webkit.WebViewCore.TouchEventData; 90import android.webkit.WebViewCore.TouchHighlightData; 91import android.widget.AbsoluteLayout; 92import android.widget.Adapter; 93import android.widget.AdapterView; 94import android.widget.AdapterView.OnItemClickListener; 95import android.widget.ArrayAdapter; 96import android.widget.CheckedTextView; 97import android.widget.LinearLayout; 98import android.widget.ListView; 99import android.widget.OverScroller; 100import android.widget.Toast; 101 102import junit.framework.Assert; 103 104import java.io.File; 105import java.io.FileInputStream; 106import java.io.FileNotFoundException; 107import java.io.FileOutputStream; 108import java.io.IOException; 109import java.io.InputStream; 110import java.io.OutputStream; 111import java.net.URLDecoder; 112import java.util.ArrayList; 113import java.util.HashMap; 114import java.util.HashSet; 115import java.util.List; 116import java.util.Map; 117import java.util.Set; 118import java.util.Vector; 119import java.util.regex.Matcher; 120import java.util.regex.Pattern; 121 122/** 123 * <p>A View that displays web pages. This class is the basis upon which you 124 * can roll your own web browser or simply display some online content within your Activity. 125 * It uses the WebKit rendering engine to display 126 * web pages and includes methods to navigate forward and backward 127 * through a history, zoom in and out, perform text searches and more.</p> 128 * <p>To enable the built-in zoom, set 129 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 130 * (introduced in API version 3). 131 * <p>Note that, in order for your Activity to access the Internet and load web pages 132 * in a WebView, you must add the {@code INTERNET} permissions to your 133 * Android Manifest file:</p> 134 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 135 * 136 * <p>This must be a child of the <a 137 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 138 * element.</p> 139 * 140 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 141 * tutorial</a>.</p> 142 * 143 * <h3>Basic usage</h3> 144 * 145 * <p>By default, a WebView provides no browser-like widgets, does not 146 * enable JavaScript and web page errors are ignored. If your goal is only 147 * to display some HTML as a part of your UI, this is probably fine; 148 * the user won't need to interact with the web page beyond reading 149 * it, and the web page won't need to interact with the user. If you 150 * actually want a full-blown web browser, then you probably want to 151 * invoke the Browser application with a URL Intent rather than show it 152 * with a WebView. For example: 153 * <pre> 154 * Uri uri = Uri.parse("http://www.example.com"); 155 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 156 * startActivity(intent); 157 * </pre> 158 * <p>See {@link android.content.Intent} for more information.</p> 159 * 160 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 161 * or set the entire Activity window as a WebView during {@link 162 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 163 * <pre class="prettyprint"> 164 * WebView webview = new WebView(this); 165 * setContentView(webview); 166 * </pre> 167 * 168 * <p>Then load the desired web page:</p> 169 * <pre> 170 * // Simplest usage: note that an exception will NOT be thrown 171 * // if there is an error loading this page (see below). 172 * webview.loadUrl("http://slashdot.org/"); 173 * 174 * // OR, you can also load from an HTML string: 175 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 176 * webview.loadData(summary, "text/html", null); 177 * // ... although note that there are restrictions on what this HTML can do. 178 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 179 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 180 * </pre> 181 * 182 * <p>A WebView has several customization points where you can add your 183 * own behavior. These are:</p> 184 * 185 * <ul> 186 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 187 * This class is called when something that might impact a 188 * browser UI happens, for instance, progress updates and 189 * JavaScript alerts are sent here (see <a 190 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 191 * </li> 192 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 193 * It will be called when things happen that impact the 194 * rendering of the content, eg, errors or form submissions. You 195 * can also intercept URL loading here (via {@link 196 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 197 * shouldOverrideUrlLoading()}).</li> 198 * <li>Modifying the {@link android.webkit.WebSettings}, such as 199 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 200 * setJavaScriptEnabled()}. </li> 201 * <li>Adding JavaScript-to-Java interfaces with the {@link 202 * android.webkit.WebView#addJavascriptInterface} method. 203 * This lets you bind Java objects into the WebView so they can be 204 * controlled from the web pages JavaScript.</li> 205 * </ul> 206 * 207 * <p>Here's a more complicated example, showing error handling, 208 * settings, and progress notification:</p> 209 * 210 * <pre class="prettyprint"> 211 * // Let's display the progress in the activity title bar, like the 212 * // browser app does. 213 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 214 * 215 * webview.getSettings().setJavaScriptEnabled(true); 216 * 217 * final Activity activity = this; 218 * webview.setWebChromeClient(new WebChromeClient() { 219 * public void onProgressChanged(WebView view, int progress) { 220 * // Activities and WebViews measure progress with different scales. 221 * // The progress meter will automatically disappear when we reach 100% 222 * activity.setProgress(progress * 1000); 223 * } 224 * }); 225 * webview.setWebViewClient(new WebViewClient() { 226 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 227 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 228 * } 229 * }); 230 * 231 * webview.loadUrl("http://slashdot.org/"); 232 * </pre> 233 * 234 * <h3>Cookie and window management</h3> 235 * 236 * <p>For obvious security reasons, your application has its own 237 * cache, cookie store etc.—it does not share the Browser 238 * application's data. Cookies are managed on a separate thread, so 239 * operations like index building don't block the UI 240 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 241 * if you want to use cookies in your application. 242 * </p> 243 * 244 * <p>By default, requests by the HTML to open new windows are 245 * ignored. This is true whether they be opened by JavaScript or by 246 * the target attribute on a link. You can customize your 247 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 248 * and render them in whatever manner you want.</p> 249 * 250 * <p>The standard behavior for an Activity is to be destroyed and 251 * recreated when the device orientation or any other configuration changes. This will cause 252 * the WebView to reload the current page. If you don't want that, you 253 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 254 * changes, and then just leave the WebView alone. It'll automatically 255 * re-orient itself as appropriate. Read <a 256 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 257 * more information about how to handle configuration changes during runtime.</p> 258 * 259 * 260 * <h3>Building web pages to support different screen densities</h3> 261 * 262 * <p>The screen density of a device is based on the screen resolution. A screen with low density 263 * has fewer available pixels per inch, where a screen with high density 264 * has more — sometimes significantly more — pixels per inch. The density of a 265 * screen is important because, other things being equal, a UI element (such as a button) whose 266 * height and width are defined in terms of screen pixels will appear larger on the lower density 267 * screen and smaller on the higher density screen. 268 * For simplicity, Android collapses all actual screen densities into three generalized densities: 269 * high, medium, and low.</p> 270 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 271 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 272 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 273 * are bigger). 274 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 275 * you (as a web developer) target screens with different screen densities.</p> 276 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 277 * <ul> 278 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 279 * default scaling factor used for the current device. For example, if the value of {@code 280 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 281 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 282 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 283 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 284 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 285 * (discussed below), then you can stop this default scaling behavior.</li> 286 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 287 * densities for which this style sheet is to be used. The corresponding value should be either 288 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 289 * density, or high density screens, respectively. For example: 290 * <pre> 291 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 292 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 293 * which is the high density pixel ratio.</p> 294 * </li> 295 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 296 * this to specify the target density for which the web page is designed, using the following 297 * values: 298 * <ul> 299 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 300 * occurs.</li> 301 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 302 * as appropriate.</li> 303 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 304 * low density screens scale down. This is also the default behavior.</li> 305 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 306 * as appropriate.</li> 307 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 308 * values are 70-400).</li> 309 * </ul> 310 * <p>Here's an example meta tag to specify the target density:</p> 311 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 312 * </ul> 313 * <p>If you want to modify your web page for different densities, by using the {@code 314 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 315 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 316 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 317 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 318 * 319 * 320 */ 321@Widget 322public class WebView extends AbsoluteLayout 323 implements ViewTreeObserver.OnGlobalFocusChangeListener, 324 ViewGroup.OnHierarchyChangeListener { 325 326 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 327 public void onGlobalLayout() { 328 if (isShown()) { 329 setGLRectViewport(); 330 } 331 } 332 } 333 334 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 335 public void onScrollChanged() { 336 if (isShown()) { 337 setGLRectViewport(); 338 } 339 } 340 } 341 342 // The listener to capture global layout change event. 343 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 344 345 // The listener to capture scroll event. 346 private InnerScrollChangedListener mScrollChangedListener = null; 347 348 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 349 // the screen all-the-time. Good for profiling our drawing code 350 static private final boolean AUTO_REDRAW_HACK = false; 351 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 352 private boolean mAutoRedraw; 353 354 // Reference to the AlertDialog displayed by InvokeListBox. 355 // It's used to dismiss the dialog in destroy if not done before. 356 private AlertDialog mListBoxDialog = null; 357 358 static final String LOGTAG = "webview"; 359 360 private ZoomManager mZoomManager; 361 362 private final Rect mGLRectViewport = new Rect(); 363 private final Rect mViewRectViewport = new Rect(); 364 private boolean mGLViewportEmpty = false; 365 366 /** 367 * Transportation object for returning WebView across thread boundaries. 368 */ 369 public class WebViewTransport { 370 private WebView mWebview; 371 372 /** 373 * Set the WebView to the transportation object. 374 * @param webview The WebView to transport. 375 */ 376 public synchronized void setWebView(WebView webview) { 377 mWebview = webview; 378 } 379 380 /** 381 * Return the WebView object. 382 * @return WebView The transported WebView object. 383 */ 384 public synchronized WebView getWebView() { 385 return mWebview; 386 } 387 } 388 389 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 390 private static OnTrimMemoryListener sInstance = null; 391 392 static void init(Context c) { 393 if (sInstance == null) { 394 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 395 } 396 } 397 398 private OnTrimMemoryListener(Context c) { 399 c.registerComponentCallbacks(this); 400 } 401 402 @Override 403 public void onConfigurationChanged(Configuration newConfig) { 404 // Ignore 405 } 406 407 @Override 408 public void onLowMemory() { 409 // Ignore 410 } 411 412 @Override 413 public void onTrimMemory(int level) { 414 if (DebugFlags.WEB_VIEW) { 415 Log.d("WebView", "onTrimMemory: " + level); 416 } 417 WebView.nativeOnTrimMemory(level); 418 } 419 420 } 421 422 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 423 private final CallbackProxy mCallbackProxy; 424 425 private final WebViewDatabase mDatabase; 426 427 // SSL certificate for the main top-level page (if secure) 428 private SslCertificate mCertificate; 429 430 // Native WebView pointer that is 0 until the native object has been 431 // created. 432 private int mNativeClass; 433 // This would be final but it needs to be set to null when the WebView is 434 // destroyed. 435 private WebViewCore mWebViewCore; 436 // Handler for dispatching UI messages. 437 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 438 private WebTextView mWebTextView; 439 // Used to ignore changes to webkit text that arrives to the UI side after 440 // more key events. 441 private int mTextGeneration; 442 443 /* package */ void incrementTextGeneration() { mTextGeneration++; } 444 445 // Used by WebViewCore to create child views. 446 /* package */ final ViewManager mViewManager; 447 448 // Used to display in full screen mode 449 PluginFullScreenHolder mFullScreenHolder; 450 451 /** 452 * Position of the last touch event in pixels. 453 * Use integer to prevent loss of dragging delta calculation accuracy; 454 * which was done in float and converted to integer, and resulted in gradual 455 * and compounding touch position and view dragging mismatch. 456 */ 457 private int mLastTouchX; 458 private int mLastTouchY; 459 private int mStartTouchX; 460 private int mStartTouchY; 461 private float mAverageAngle; 462 463 /** 464 * Time of the last touch event. 465 */ 466 private long mLastTouchTime; 467 468 /** 469 * Time of the last time sending touch event to WebViewCore 470 */ 471 private long mLastSentTouchTime; 472 473 /** 474 * The minimum elapsed time before sending another ACTION_MOVE event to 475 * WebViewCore. This really should be tuned for each type of the devices. 476 * For example in Google Map api test case, it takes Dream device at least 477 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 478 * triggering the layout and drawing the picture. While the same process 479 * takes 60+ms on the current high speed device. If we make 480 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 481 * to WebViewCore queue and the real layout and draw events will be pushed 482 * to further, which slows down the refresh rate. Choose 50 to favor the 483 * current high speed devices. For Dream like devices, 100 is a better 484 * choice. Maybe make this in the buildspec later. 485 * (Update 12/14/2010: changed to 0 since current device should be able to 486 * handle the raw events and Map team voted to have the raw events too. 487 */ 488 private static final int TOUCH_SENT_INTERVAL = 0; 489 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 490 491 /** 492 * Helper class to get velocity for fling 493 */ 494 VelocityTracker mVelocityTracker; 495 private int mMaximumFling; 496 private float mLastVelocity; 497 private float mLastVelX; 498 private float mLastVelY; 499 500 // The id of the native layer being scrolled. 501 private int mScrollingLayer; 502 private Rect mScrollingLayerRect = new Rect(); 503 504 // only trigger accelerated fling if the new velocity is at least 505 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 506 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 507 508 /** 509 * Touch mode 510 */ 511 private int mTouchMode = TOUCH_DONE_MODE; 512 private static final int TOUCH_INIT_MODE = 1; 513 private static final int TOUCH_DRAG_START_MODE = 2; 514 private static final int TOUCH_DRAG_MODE = 3; 515 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 516 private static final int TOUCH_SHORTPRESS_MODE = 5; 517 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 518 private static final int TOUCH_DONE_MODE = 7; 519 private static final int TOUCH_PINCH_DRAG = 8; 520 private static final int TOUCH_DRAG_LAYER_MODE = 9; 521 522 // Whether to forward the touch events to WebCore 523 // Can only be set by WebKit via JNI. 524 private boolean mForwardTouchEvents = false; 525 526 // Whether to prevent default during touch. The initial value depends on 527 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 528 // for touch down. Otherwise UI will wait for the answer of the first 529 // confirmed move before taking over the control. 530 private static final int PREVENT_DEFAULT_NO = 0; 531 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 532 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 533 private static final int PREVENT_DEFAULT_YES = 3; 534 private static final int PREVENT_DEFAULT_IGNORE = 4; 535 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 536 537 // true when the touch movement exceeds the slop 538 private boolean mConfirmMove; 539 540 // if true, touch events will be first processed by WebCore, if prevent 541 // default is not set, the UI will continue handle them. 542 private boolean mDeferTouchProcess; 543 544 // to avoid interfering with the current touch events, track them 545 // separately. Currently no snapping or fling in the deferred process mode 546 private int mDeferTouchMode = TOUCH_DONE_MODE; 547 private float mLastDeferTouchX; 548 private float mLastDeferTouchY; 549 550 // To keep track of whether the current drag was initiated by a WebTextView, 551 // so that we know not to hide the cursor 552 boolean mDragFromTextInput; 553 554 // Whether or not to draw the cursor ring. 555 private boolean mDrawCursorRing = true; 556 557 // true if onPause has been called (and not onResume) 558 private boolean mIsPaused; 559 560 private HitTestResult mInitialHitTestResult; 561 562 /** 563 * Customizable constant 564 */ 565 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 566 private int mTouchSlopSquare; 567 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 568 private int mDoubleTapSlopSquare; 569 // pre-computed density adjusted navigation slop 570 private int mNavSlop; 571 // This should be ViewConfiguration.getTapTimeout() 572 // But system time out is 100ms, which is too short for the browser. 573 // In the browser, if it switches out of tap too soon, jump tap won't work. 574 // In addition, a double tap on a trackpad will always have a duration of 575 // 300ms, so this value must be at least that (otherwise we will timeout the 576 // first tap and convert it to a long press). 577 private static final int TAP_TIMEOUT = 300; 578 // This should be ViewConfiguration.getLongPressTimeout() 579 // But system time out is 500ms, which is too short for the browser. 580 // With a short timeout, it's difficult to treat trigger a short press. 581 private static final int LONG_PRESS_TIMEOUT = 1000; 582 // needed to avoid flinging after a pause of no movement 583 private static final int MIN_FLING_TIME = 250; 584 // draw unfiltered after drag is held without movement 585 private static final int MOTIONLESS_TIME = 100; 586 // The amount of content to overlap between two screens when going through 587 // pages with the space bar, in pixels. 588 private static final int PAGE_SCROLL_OVERLAP = 24; 589 590 /** 591 * These prevent calling requestLayout if either dimension is fixed. This 592 * depends on the layout parameters and the measure specs. 593 */ 594 boolean mWidthCanMeasure; 595 boolean mHeightCanMeasure; 596 597 // Remember the last dimensions we sent to the native side so we can avoid 598 // sending the same dimensions more than once. 599 int mLastWidthSent; 600 int mLastHeightSent; 601 // Since view height sent to webkit could be fixed to avoid relayout, this 602 // value records the last sent actual view height. 603 int mLastActualHeightSent; 604 605 private int mContentWidth; // cache of value from WebViewCore 606 private int mContentHeight; // cache of value from WebViewCore 607 608 // Need to have the separate control for horizontal and vertical scrollbar 609 // style than the View's single scrollbar style 610 private boolean mOverlayHorizontalScrollbar = true; 611 private boolean mOverlayVerticalScrollbar = false; 612 613 // our standard speed. this way small distances will be traversed in less 614 // time than large distances, but we cap the duration, so that very large 615 // distances won't take too long to get there. 616 private static final int STD_SPEED = 480; // pixels per second 617 // time for the longest scroll animation 618 private static final int MAX_DURATION = 750; // milliseconds 619 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 620 621 // Used by OverScrollGlow 622 OverScroller mScroller; 623 624 private boolean mInOverScrollMode = false; 625 private static Paint mOverScrollBackground; 626 private static Paint mOverScrollBorder; 627 628 private boolean mWrapContent; 629 private static final int MOTIONLESS_FALSE = 0; 630 private static final int MOTIONLESS_PENDING = 1; 631 private static final int MOTIONLESS_TRUE = 2; 632 private static final int MOTIONLESS_IGNORE = 3; 633 private int mHeldMotionless; 634 635 // An instance for injecting accessibility in WebViews with disabled 636 // JavaScript or ones for which no accessibility script exists 637 private AccessibilityInjector mAccessibilityInjector; 638 639 // flag indicating if accessibility script is injected so we 640 // know to handle Shift and arrows natively first 641 private boolean mAccessibilityScriptInjected; 642 643 static final boolean USE_JAVA_TEXT_SELECTION = true; 644 private Region mTextSelectionRegion = new Region(); 645 private Paint mTextSelectionPaint; 646 private Drawable mSelectHandleLeft; 647 private Drawable mSelectHandleRight; 648 649 static final boolean USE_WEBKIT_RINGS = false; 650 // the color used to highlight the touch rectangles 651 private static final int HIGHLIGHT_COLOR = 0x6633b5e5; 652 // the round corner for the highlight path 653 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 654 // the region indicating where the user touched on the screen 655 private Region mTouchHighlightRegion = new Region(); 656 // the paint for the touch highlight 657 private Paint mTouchHightlightPaint; 658 // debug only 659 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 660 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 661 private Paint mTouchCrossHairColor; 662 private int mTouchHighlightX; 663 private int mTouchHighlightY; 664 private long mTouchHighlightRequested; 665 666 // Basically this proxy is used to tell the Video to update layer tree at 667 // SetBaseLayer time and to pause when WebView paused. 668 private HTML5VideoViewProxy mHTML5VideoViewProxy; 669 670 // If we are using a set picture, don't send view updates to webkit 671 private boolean mBlockWebkitViewMessages = false; 672 673 // cached value used to determine if we need to switch drawing models 674 private boolean mHardwareAccelSkia = false; 675 676 /* 677 * Private message ids 678 */ 679 private static final int REMEMBER_PASSWORD = 1; 680 private static final int NEVER_REMEMBER_PASSWORD = 2; 681 private static final int SWITCH_TO_SHORTPRESS = 3; 682 private static final int SWITCH_TO_LONGPRESS = 4; 683 private static final int RELEASE_SINGLE_TAP = 5; 684 private static final int REQUEST_FORM_DATA = 6; 685 private static final int RESUME_WEBCORE_PRIORITY = 7; 686 private static final int DRAG_HELD_MOTIONLESS = 8; 687 private static final int AWAKEN_SCROLL_BARS = 9; 688 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 689 private static final int SCROLL_SELECT_TEXT = 11; 690 691 692 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 693 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 694 695 /* 696 * Package message ids 697 */ 698 static final int SCROLL_TO_MSG_ID = 101; 699 static final int NEW_PICTURE_MSG_ID = 105; 700 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 701 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 702 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 703 static final int UPDATE_ZOOM_RANGE = 109; 704 static final int UNHANDLED_NAV_KEY = 110; 705 static final int CLEAR_TEXT_ENTRY = 111; 706 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 707 static final int SHOW_RECT_MSG_ID = 113; 708 static final int LONG_PRESS_CENTER = 114; 709 static final int PREVENT_TOUCH_ID = 115; 710 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 711 // obj=Rect in doc coordinates 712 static final int INVAL_RECT_MSG_ID = 117; 713 static final int REQUEST_KEYBOARD = 118; 714 static final int DO_MOTION_UP = 119; 715 static final int SHOW_FULLSCREEN = 120; 716 static final int HIDE_FULLSCREEN = 121; 717 static final int DOM_FOCUS_CHANGED = 122; 718 static final int REPLACE_BASE_CONTENT = 123; 719 static final int FORM_DID_BLUR = 124; 720 static final int RETURN_LABEL = 125; 721 static final int FIND_AGAIN = 126; 722 static final int CENTER_FIT_RECT = 127; 723 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 724 static final int SET_SCROLLBAR_MODES = 129; 725 static final int SELECTION_STRING_CHANGED = 130; 726 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 727 static final int SAVE_WEBARCHIVE_FINISHED = 132; 728 729 static final int SET_AUTOFILLABLE = 133; 730 static final int AUTOFILL_COMPLETE = 134; 731 732 static final int SELECT_AT = 135; 733 static final int SCREEN_ON = 136; 734 static final int ENTER_FULLSCREEN_VIDEO = 137; 735 static final int UPDATE_SELECTION = 138; 736 737 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 738 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 739 740 static final String[] HandlerPrivateDebugString = { 741 "REMEMBER_PASSWORD", // = 1; 742 "NEVER_REMEMBER_PASSWORD", // = 2; 743 "SWITCH_TO_SHORTPRESS", // = 3; 744 "SWITCH_TO_LONGPRESS", // = 4; 745 "RELEASE_SINGLE_TAP", // = 5; 746 "REQUEST_FORM_DATA", // = 6; 747 "RESUME_WEBCORE_PRIORITY", // = 7; 748 "DRAG_HELD_MOTIONLESS", // = 8; 749 "AWAKEN_SCROLL_BARS", // = 9; 750 "PREVENT_DEFAULT_TIMEOUT", // = 10; 751 "SCROLL_SELECT_TEXT" // = 11; 752 }; 753 754 static final String[] HandlerPackageDebugString = { 755 "SCROLL_TO_MSG_ID", // = 101; 756 "102", // = 102; 757 "103", // = 103; 758 "104", // = 104; 759 "NEW_PICTURE_MSG_ID", // = 105; 760 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 761 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 762 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 763 "UPDATE_ZOOM_RANGE", // = 109; 764 "UNHANDLED_NAV_KEY", // = 110; 765 "CLEAR_TEXT_ENTRY", // = 111; 766 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 767 "SHOW_RECT_MSG_ID", // = 113; 768 "LONG_PRESS_CENTER", // = 114; 769 "PREVENT_TOUCH_ID", // = 115; 770 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 771 "INVAL_RECT_MSG_ID", // = 117; 772 "REQUEST_KEYBOARD", // = 118; 773 "DO_MOTION_UP", // = 119; 774 "SHOW_FULLSCREEN", // = 120; 775 "HIDE_FULLSCREEN", // = 121; 776 "DOM_FOCUS_CHANGED", // = 122; 777 "REPLACE_BASE_CONTENT", // = 123; 778 "FORM_DID_BLUR", // = 124; 779 "RETURN_LABEL", // = 125; 780 "FIND_AGAIN", // = 126; 781 "CENTER_FIT_RECT", // = 127; 782 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 783 "SET_SCROLLBAR_MODES", // = 129; 784 "SELECTION_STRING_CHANGED", // = 130; 785 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 786 "SAVE_WEBARCHIVE_FINISHED", // = 132; 787 "SET_AUTOFILLABLE", // = 133; 788 "AUTOFILL_COMPLETE", // = 134; 789 "SELECT_AT", // = 135; 790 "SCREEN_ON", // = 136; 791 "ENTER_FULLSCREEN_VIDEO" // = 137; 792 }; 793 794 // If the site doesn't use the viewport meta tag to specify the viewport, 795 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 796 static final int DEFAULT_VIEWPORT_WIDTH = 980; 797 798 // normally we try to fit the content to the minimum preferred width 799 // calculated by the Webkit. To avoid the bad behavior when some site's 800 // minimum preferred width keeps growing when changing the viewport width or 801 // the minimum preferred width is huge, an upper limit is needed. 802 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 803 804 // initial scale in percent. 0 means using default. 805 private int mInitialScaleInPercent = 0; 806 807 // Whether or not a scroll event should be sent to webkit. This is only set 808 // to false when restoring the scroll position. 809 private boolean mSendScrollEvent = true; 810 811 private int mSnapScrollMode = SNAP_NONE; 812 private static final int SNAP_NONE = 0; 813 private static final int SNAP_LOCK = 1; // not a separate state 814 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 815 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 816 private boolean mSnapPositive; 817 818 // keep these in sync with their counterparts in WebView.cpp 819 private static final int DRAW_EXTRAS_NONE = 0; 820 private static final int DRAW_EXTRAS_FIND = 1; 821 private static final int DRAW_EXTRAS_SELECTION = 2; 822 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 823 824 // keep this in sync with WebCore:ScrollbarMode in WebKit 825 private static final int SCROLLBAR_AUTO = 0; 826 private static final int SCROLLBAR_ALWAYSOFF = 1; 827 // as we auto fade scrollbar, this is ignored. 828 private static final int SCROLLBAR_ALWAYSON = 2; 829 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 830 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 831 832 // constants for determining script injection strategy 833 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 834 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 835 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 836 837 // the alias via which accessibility JavaScript interface is exposed 838 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 839 840 // JavaScript to inject the script chooser which will 841 // pick the right script for the current URL 842 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 843 "javascript:(function() {" + 844 " var chooser = document.createElement('script');" + 845 " chooser.type = 'text/javascript';" + 846 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 847 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 848 " })();"; 849 850 // Regular expression that matches the "axs" URL parameter. 851 // The value of 0 means the accessibility script is opted out 852 // The value of 1 means the accessibility script is already injected 853 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 854 855 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 856 private TextToSpeech mTextToSpeech; 857 858 // variable to cache the above pattern in case accessibility is enabled. 859 private Pattern mMatchAxsUrlParameterPattern; 860 861 /** 862 * Max distance to overscroll by in pixels. 863 * This how far content can be pulled beyond its normal bounds by the user. 864 */ 865 private int mOverscrollDistance; 866 867 /** 868 * Max distance to overfling by in pixels. 869 * This is how far flinged content can move beyond the end of its normal bounds. 870 */ 871 private int mOverflingDistance; 872 873 private OverScrollGlow mOverScrollGlow; 874 875 // Used to match key downs and key ups 876 private Vector<Integer> mKeysPressed; 877 878 /* package */ static boolean mLogEvent = true; 879 880 // for event log 881 private long mLastTouchUpTime = 0; 882 883 private WebViewCore.AutoFillData mAutoFillData; 884 885 private static boolean sNotificationsEnabled = true; 886 887 /** 888 * URI scheme for telephone number 889 */ 890 public static final String SCHEME_TEL = "tel:"; 891 /** 892 * URI scheme for email address 893 */ 894 public static final String SCHEME_MAILTO = "mailto:"; 895 /** 896 * URI scheme for map address 897 */ 898 public static final String SCHEME_GEO = "geo:0,0?q="; 899 900 private int mBackgroundColor = Color.WHITE; 901 902 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 903 private int mAutoScrollX = 0; 904 private int mAutoScrollY = 0; 905 private int mMinAutoScrollX = 0; 906 private int mMaxAutoScrollX = 0; 907 private int mMinAutoScrollY = 0; 908 private int mMaxAutoScrollY = 0; 909 private Rect mScrollingLayerBounds = new Rect(); 910 private boolean mSentAutoScrollMessage = false; 911 912 // used for serializing asynchronously handled touch events. 913 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 914 915 // Used to track whether picture updating was paused due to a window focus change. 916 private boolean mPictureUpdatePausedForFocusChange = false; 917 918 // Used to notify listeners of a new picture. 919 private PictureListener mPictureListener; 920 /** 921 * Interface to listen for new pictures as they change. 922 * @deprecated This interface is now obsolete. 923 */ 924 @Deprecated 925 public interface PictureListener { 926 /** 927 * Notify the listener that the picture has changed. 928 * @param view The WebView that owns the picture. 929 * @param picture The new picture. 930 * @deprecated This method is now obsolete. 931 */ 932 @Deprecated 933 public void onNewPicture(WebView view, Picture picture); 934 } 935 936 // FIXME: Want to make this public, but need to change the API file. 937 public /*static*/ class HitTestResult { 938 /** 939 * Default HitTestResult, where the target is unknown 940 */ 941 public static final int UNKNOWN_TYPE = 0; 942 /** 943 * @deprecated This type is no longer used. 944 */ 945 @Deprecated 946 public static final int ANCHOR_TYPE = 1; 947 /** 948 * HitTestResult for hitting a phone number 949 */ 950 public static final int PHONE_TYPE = 2; 951 /** 952 * HitTestResult for hitting a map address 953 */ 954 public static final int GEO_TYPE = 3; 955 /** 956 * HitTestResult for hitting an email address 957 */ 958 public static final int EMAIL_TYPE = 4; 959 /** 960 * HitTestResult for hitting an HTML::img tag 961 */ 962 public static final int IMAGE_TYPE = 5; 963 /** 964 * @deprecated This type is no longer used. 965 */ 966 @Deprecated 967 public static final int IMAGE_ANCHOR_TYPE = 6; 968 /** 969 * HitTestResult for hitting a HTML::a tag with src=http 970 */ 971 public static final int SRC_ANCHOR_TYPE = 7; 972 /** 973 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 974 */ 975 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 976 /** 977 * HitTestResult for hitting an edit text area 978 */ 979 public static final int EDIT_TEXT_TYPE = 9; 980 981 private int mType; 982 private String mExtra; 983 984 HitTestResult() { 985 mType = UNKNOWN_TYPE; 986 } 987 988 private void setType(int type) { 989 mType = type; 990 } 991 992 private void setExtra(String extra) { 993 mExtra = extra; 994 } 995 996 public int getType() { 997 return mType; 998 } 999 1000 public String getExtra() { 1001 return mExtra; 1002 } 1003 } 1004 1005 /** 1006 * Construct a new WebView with a Context object. 1007 * @param context A Context object used to access application assets. 1008 */ 1009 public WebView(Context context) { 1010 this(context, null); 1011 } 1012 1013 /** 1014 * Construct a new WebView with layout parameters. 1015 * @param context A Context object used to access application assets. 1016 * @param attrs An AttributeSet passed to our parent. 1017 */ 1018 public WebView(Context context, AttributeSet attrs) { 1019 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1020 } 1021 1022 /** 1023 * Construct a new WebView with layout parameters and a default style. 1024 * @param context A Context object used to access application assets. 1025 * @param attrs An AttributeSet passed to our parent. 1026 * @param defStyle The default style resource ID. 1027 */ 1028 public WebView(Context context, AttributeSet attrs, int defStyle) { 1029 this(context, attrs, defStyle, false); 1030 } 1031 1032 /** 1033 * Construct a new WebView with layout parameters and a default style. 1034 * @param context A Context object used to access application assets. 1035 * @param attrs An AttributeSet passed to our parent. 1036 * @param defStyle The default style resource ID. 1037 */ 1038 public WebView(Context context, AttributeSet attrs, int defStyle, 1039 boolean privateBrowsing) { 1040 this(context, attrs, defStyle, null, privateBrowsing); 1041 } 1042 1043 /** 1044 * Construct a new WebView with layout parameters, a default style and a set 1045 * of custom Javscript interfaces to be added to the WebView at initialization 1046 * time. This guarantees that these interfaces will be available when the JS 1047 * context is initialized. 1048 * @param context A Context object used to access application assets. 1049 * @param attrs An AttributeSet passed to our parent. 1050 * @param defStyle The default style resource ID. 1051 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1052 * object implementing those interfaces, as values. 1053 * @hide pending API council approval. 1054 */ 1055 protected WebView(Context context, AttributeSet attrs, int defStyle, 1056 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1057 super(context, attrs, defStyle); 1058 checkThread(); 1059 1060 if (context == null) { 1061 throw new IllegalArgumentException("Invalid context argument"); 1062 } 1063 1064 // Used by the chrome stack to find application paths 1065 JniUtil.setContext(context); 1066 1067 mCallbackProxy = new CallbackProxy(context, this); 1068 mViewManager = new ViewManager(this); 1069 L10nUtils.setApplicationContext(context.getApplicationContext()); 1070 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1071 mDatabase = WebViewDatabase.getInstance(context); 1072 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1073 mZoomManager = new ZoomManager(this, mCallbackProxy); 1074 1075 /* The init method must follow the creation of certain member variables, 1076 * such as the mZoomManager. 1077 */ 1078 init(); 1079 setupPackageListener(context); 1080 setupProxyListener(context); 1081 updateMultiTouchSupport(context); 1082 1083 if (privateBrowsing) { 1084 startPrivateBrowsing(); 1085 } 1086 1087 mAutoFillData = new WebViewCore.AutoFillData(); 1088 } 1089 1090 private static class ProxyReceiver extends BroadcastReceiver { 1091 @Override 1092 public void onReceive(Context context, Intent intent) { 1093 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1094 handleProxyBroadcast(intent); 1095 } 1096 } 1097 } 1098 1099 /* 1100 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1101 */ 1102 private static ProxyReceiver sProxyReceiver; 1103 1104 /* 1105 * @param context This method expects this to be a valid context 1106 */ 1107 private static synchronized void setupProxyListener(Context context) { 1108 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1109 return; 1110 } 1111 IntentFilter filter = new IntentFilter(); 1112 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1113 sProxyReceiver = new ProxyReceiver(); 1114 Intent currentProxy = context.getApplicationContext().registerReceiver( 1115 sProxyReceiver, filter); 1116 if (currentProxy != null) { 1117 handleProxyBroadcast(currentProxy); 1118 } 1119 } 1120 1121 /* 1122 * @param context This method expects this to be a valid context 1123 */ 1124 private static synchronized void disableProxyListener(Context context) { 1125 if (sProxyReceiver == null) 1126 return; 1127 1128 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1129 sProxyReceiver = null; 1130 } 1131 1132 private static void handleProxyBroadcast(Intent intent) { 1133 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1134 if (proxyProperties == null || proxyProperties.getHost() == null) { 1135 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1136 return; 1137 } 1138 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1139 } 1140 1141 /* 1142 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1143 * or ACTION_PACKAGE_REMOVED. 1144 */ 1145 private static boolean sPackageInstallationReceiverAdded = false; 1146 1147 /* 1148 * A set of Google packages we monitor for the 1149 * navigator.isApplicationInstalled() API. Add additional packages as 1150 * needed. 1151 */ 1152 private static Set<String> sGoogleApps; 1153 static { 1154 sGoogleApps = new HashSet<String>(); 1155 sGoogleApps.add("com.google.android.youtube"); 1156 } 1157 1158 private static class PackageListener extends BroadcastReceiver { 1159 @Override 1160 public void onReceive(Context context, Intent intent) { 1161 final String action = intent.getAction(); 1162 final String packageName = intent.getData().getSchemeSpecificPart(); 1163 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1164 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1165 // if it is replacing, refreshPlugins() when adding 1166 return; 1167 } 1168 1169 if (sGoogleApps.contains(packageName)) { 1170 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1171 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1172 } else { 1173 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1174 } 1175 } 1176 1177 PluginManager pm = PluginManager.getInstance(context); 1178 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1179 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1180 } 1181 } 1182 } 1183 1184 private void setupPackageListener(Context context) { 1185 1186 /* 1187 * we must synchronize the instance check and the creation of the 1188 * receiver to ensure that only ONE receiver exists for all WebView 1189 * instances. 1190 */ 1191 synchronized (WebView.class) { 1192 1193 // if the receiver already exists then we do not need to register it 1194 // again 1195 if (sPackageInstallationReceiverAdded) { 1196 return; 1197 } 1198 1199 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1200 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1201 filter.addDataScheme("package"); 1202 BroadcastReceiver packageListener = new PackageListener(); 1203 context.getApplicationContext().registerReceiver(packageListener, filter); 1204 sPackageInstallationReceiverAdded = true; 1205 } 1206 1207 // check if any of the monitored apps are already installed 1208 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1209 1210 @Override 1211 protected Set<String> doInBackground(Void... unused) { 1212 Set<String> installedPackages = new HashSet<String>(); 1213 PackageManager pm = mContext.getPackageManager(); 1214 for (String name : sGoogleApps) { 1215 try { 1216 PackageInfo pInfo = pm.getPackageInfo(name, 1217 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1218 installedPackages.add(name); 1219 } catch (PackageManager.NameNotFoundException e) { 1220 // package not found 1221 } 1222 } 1223 return installedPackages; 1224 } 1225 1226 // Executes on the UI thread 1227 @Override 1228 protected void onPostExecute(Set<String> installedPackages) { 1229 if (mWebViewCore != null) { 1230 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1231 } 1232 } 1233 }; 1234 task.execute(); 1235 } 1236 1237 void updateMultiTouchSupport(Context context) { 1238 mZoomManager.updateMultiTouchSupport(context); 1239 } 1240 1241 private void init() { 1242 OnTrimMemoryListener.init(getContext()); 1243 1244 setWillNotDraw(false); 1245 setFocusable(true); 1246 setFocusableInTouchMode(true); 1247 setClickable(true); 1248 setLongClickable(true); 1249 1250 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1251 int slop = configuration.getScaledTouchSlop(); 1252 mTouchSlopSquare = slop * slop; 1253 slop = configuration.getScaledDoubleTapSlop(); 1254 mDoubleTapSlopSquare = slop * slop; 1255 final float density = getContext().getResources().getDisplayMetrics().density; 1256 // use one line height, 16 based on our current default font, for how 1257 // far we allow a touch be away from the edge of a link 1258 mNavSlop = (int) (16 * density); 1259 mZoomManager.init(density); 1260 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1261 1262 // Compute the inverse of the density squared. 1263 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1264 1265 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1266 mOverflingDistance = configuration.getScaledOverflingDistance(); 1267 1268 setScrollBarStyle(super.getScrollBarStyle()); 1269 // Initially use a size of two, since the user is likely to only hold 1270 // down two keys at a time (shift + another key) 1271 mKeysPressed = new Vector<Integer>(2); 1272 mHTML5VideoViewProxy = null ; 1273 } 1274 1275 @Override 1276 public boolean shouldDelayChildPressedState() { 1277 return true; 1278 } 1279 1280 /** 1281 * Adds accessibility APIs to JavaScript. 1282 * 1283 * Note: This method is responsible to performing the necessary 1284 * check if the accessibility APIs should be exposed. 1285 */ 1286 private void addAccessibilityApisToJavaScript() { 1287 if (AccessibilityManager.getInstance(mContext).isEnabled() 1288 && getSettings().getJavaScriptEnabled()) { 1289 // exposing the TTS for now ... 1290 mTextToSpeech = new TextToSpeech(getContext(), null); 1291 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1292 } 1293 } 1294 1295 /** 1296 * Removes accessibility APIs from JavaScript. 1297 */ 1298 private void removeAccessibilityApisFromJavaScript() { 1299 // exposing the TTS for now ... 1300 if (mTextToSpeech != null) { 1301 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1302 mTextToSpeech.shutdown(); 1303 mTextToSpeech = null; 1304 } 1305 } 1306 1307 @Override 1308 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1309 super.onInitializeAccessibilityNodeInfo(info); 1310 info.setScrollable(isScrollableForAccessibility()); 1311 } 1312 1313 @Override 1314 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1315 super.onInitializeAccessibilityEvent(event); 1316 event.setScrollable(isScrollableForAccessibility()); 1317 event.setScrollX(mScrollX); 1318 event.setScrollY(mScrollY); 1319 final int convertedContentWidth = contentToViewX(getContentWidth()); 1320 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1321 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1322 final int convertedContentHeight = contentToViewY(getContentHeight()); 1323 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1324 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1325 } 1326 1327 private boolean isScrollableForAccessibility() { 1328 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1329 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1330 } 1331 1332 @Override 1333 public void setOverScrollMode(int mode) { 1334 super.setOverScrollMode(mode); 1335 if (mode != OVER_SCROLL_NEVER) { 1336 if (mOverScrollGlow == null) { 1337 mOverScrollGlow = new OverScrollGlow(this); 1338 } 1339 } else { 1340 mOverScrollGlow = null; 1341 } 1342 } 1343 1344 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1345 final float density = mContext.getResources().getDisplayMetrics().density 1346 * 100 / zoomDensity; 1347 mNavSlop = (int) (16 * density); 1348 mZoomManager.updateDefaultZoomDensity(density); 1349 } 1350 1351 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1352 String password, final Message resumeMsg) { 1353 boolean rVal = false; 1354 if (resumeMsg == null) { 1355 // null resumeMsg implies saving password silently 1356 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1357 } else { 1358 final Message remember = mPrivateHandler.obtainMessage( 1359 REMEMBER_PASSWORD); 1360 remember.getData().putString("host", schemePlusHost); 1361 remember.getData().putString("username", username); 1362 remember.getData().putString("password", password); 1363 remember.obj = resumeMsg; 1364 1365 final Message neverRemember = mPrivateHandler.obtainMessage( 1366 NEVER_REMEMBER_PASSWORD); 1367 neverRemember.getData().putString("host", schemePlusHost); 1368 neverRemember.getData().putString("username", username); 1369 neverRemember.getData().putString("password", password); 1370 neverRemember.obj = resumeMsg; 1371 1372 new AlertDialog.Builder(getContext()) 1373 .setTitle(com.android.internal.R.string.save_password_label) 1374 .setMessage(com.android.internal.R.string.save_password_message) 1375 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1376 new DialogInterface.OnClickListener() { 1377 public void onClick(DialogInterface dialog, int which) { 1378 resumeMsg.sendToTarget(); 1379 } 1380 }) 1381 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1382 new DialogInterface.OnClickListener() { 1383 public void onClick(DialogInterface dialog, int which) { 1384 remember.sendToTarget(); 1385 } 1386 }) 1387 .setNegativeButton(com.android.internal.R.string.save_password_never, 1388 new DialogInterface.OnClickListener() { 1389 public void onClick(DialogInterface dialog, int which) { 1390 neverRemember.sendToTarget(); 1391 } 1392 }) 1393 .setOnCancelListener(new OnCancelListener() { 1394 public void onCancel(DialogInterface dialog) { 1395 resumeMsg.sendToTarget(); 1396 } 1397 }).show(); 1398 // Return true so that WebViewCore will pause while the dialog is 1399 // up. 1400 rVal = true; 1401 } 1402 return rVal; 1403 } 1404 1405 @Override 1406 public void setScrollBarStyle(int style) { 1407 if (style == View.SCROLLBARS_INSIDE_INSET 1408 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1409 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1410 } else { 1411 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1412 } 1413 super.setScrollBarStyle(style); 1414 } 1415 1416 /** 1417 * Specify whether the horizontal scrollbar has overlay style. 1418 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1419 */ 1420 public void setHorizontalScrollbarOverlay(boolean overlay) { 1421 checkThread(); 1422 mOverlayHorizontalScrollbar = overlay; 1423 } 1424 1425 /** 1426 * Specify whether the vertical scrollbar has overlay style. 1427 * @param overlay TRUE if vertical scrollbar should have overlay style. 1428 */ 1429 public void setVerticalScrollbarOverlay(boolean overlay) { 1430 checkThread(); 1431 mOverlayVerticalScrollbar = overlay; 1432 } 1433 1434 /** 1435 * Return whether horizontal scrollbar has overlay style 1436 * @return TRUE if horizontal scrollbar has overlay style. 1437 */ 1438 public boolean overlayHorizontalScrollbar() { 1439 checkThread(); 1440 return mOverlayHorizontalScrollbar; 1441 } 1442 1443 /** 1444 * Return whether vertical scrollbar has overlay style 1445 * @return TRUE if vertical scrollbar has overlay style. 1446 */ 1447 public boolean overlayVerticalScrollbar() { 1448 checkThread(); 1449 return mOverlayVerticalScrollbar; 1450 } 1451 1452 /* 1453 * Return the width of the view where the content of WebView should render 1454 * to. 1455 * Note: this can be called from WebCoreThread. 1456 */ 1457 /* package */ int getViewWidth() { 1458 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1459 return getWidth(); 1460 } else { 1461 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1462 } 1463 } 1464 1465 /** 1466 * returns the height of the titlebarview (if any). Does not care about 1467 * scrolling 1468 * @hide 1469 */ 1470 protected int getTitleHeight() { 1471 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1472 } 1473 1474 /** 1475 * Return the amount of the titlebarview (if any) that is visible 1476 * 1477 * @deprecated This method is now obsolete. 1478 */ 1479 public int getVisibleTitleHeight() { 1480 checkThread(); 1481 return getVisibleTitleHeightImpl(); 1482 } 1483 1484 private int getVisibleTitleHeightImpl() { 1485 // need to restrict mScrollY due to over scroll 1486 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1487 mFindCallback != null ? mFindCallback.getActionModeHeight() : 0); 1488 } 1489 1490 /* 1491 * Return the height of the view where the content of WebView should render 1492 * to. Note that this excludes mTitleBar, if there is one. 1493 * Note: this can be called from WebCoreThread. 1494 */ 1495 /* package */ int getViewHeight() { 1496 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1497 } 1498 1499 int getViewHeightWithTitle() { 1500 int height = getHeight(); 1501 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1502 height -= getHorizontalScrollbarHeight(); 1503 } 1504 return height; 1505 } 1506 1507 /** 1508 * @return The SSL certificate for the main top-level page or null if 1509 * there is no certificate (the site is not secure). 1510 */ 1511 public SslCertificate getCertificate() { 1512 checkThread(); 1513 return mCertificate; 1514 } 1515 1516 /** 1517 * Sets the SSL certificate for the main top-level page. 1518 */ 1519 public void setCertificate(SslCertificate certificate) { 1520 checkThread(); 1521 if (DebugFlags.WEB_VIEW) { 1522 Log.v(LOGTAG, "setCertificate=" + certificate); 1523 } 1524 // here, the certificate can be null (if the site is not secure) 1525 mCertificate = certificate; 1526 } 1527 1528 //------------------------------------------------------------------------- 1529 // Methods called by activity 1530 //------------------------------------------------------------------------- 1531 1532 /** 1533 * Save the username and password for a particular host in the WebView's 1534 * internal database. 1535 * @param host The host that required the credentials. 1536 * @param username The username for the given host. 1537 * @param password The password for the given host. 1538 */ 1539 public void savePassword(String host, String username, String password) { 1540 checkThread(); 1541 mDatabase.setUsernamePassword(host, username, password); 1542 } 1543 1544 /** 1545 * Set the HTTP authentication credentials for a given host and realm. 1546 * 1547 * @param host The host for the credentials. 1548 * @param realm The realm for the credentials. 1549 * @param username The username for the password. If it is null, it means 1550 * password can't be saved. 1551 * @param password The password 1552 */ 1553 public void setHttpAuthUsernamePassword(String host, String realm, 1554 String username, String password) { 1555 checkThread(); 1556 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1557 } 1558 1559 /** 1560 * Retrieve the HTTP authentication username and password for a given 1561 * host & realm pair 1562 * 1563 * @param host The host for which the credentials apply. 1564 * @param realm The realm for which the credentials apply. 1565 * @return String[] if found, String[0] is username, which can be null and 1566 * String[1] is password. Return null if it can't find anything. 1567 */ 1568 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1569 checkThread(); 1570 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1571 } 1572 1573 /** 1574 * Remove Find or Select ActionModes, if active. 1575 */ 1576 private void clearActionModes() { 1577 if (mSelectCallback != null) { 1578 mSelectCallback.finish(); 1579 } 1580 if (mFindCallback != null) { 1581 mFindCallback.finish(); 1582 } 1583 } 1584 1585 /** 1586 * Called to clear state when moving from one page to another, or changing 1587 * in some other way that makes elements associated with the current page 1588 * (such as WebTextView or ActionModes) no longer relevant. 1589 */ 1590 private void clearHelpers() { 1591 clearTextEntry(); 1592 clearActionModes(); 1593 dismissFullScreenMode(); 1594 } 1595 1596 /** 1597 * Destroy the internal state of the WebView. This method should be called 1598 * after the WebView has been removed from the view system. No other 1599 * methods may be called on a WebView after destroy. 1600 */ 1601 public void destroy() { 1602 checkThread(); 1603 destroyImpl(); 1604 } 1605 1606 private void destroyImpl() { 1607 clearHelpers(); 1608 if (mListBoxDialog != null) { 1609 mListBoxDialog.dismiss(); 1610 mListBoxDialog = null; 1611 } 1612 // remove so that it doesn't cause events 1613 if (mWebTextView != null) { 1614 mWebTextView.remove(); 1615 mWebTextView = null; 1616 } 1617 if (mNativeClass != 0) nativeStopGL(); 1618 if (mWebViewCore != null) { 1619 // Set the handlers to null before destroying WebViewCore so no 1620 // more messages will be posted. 1621 mCallbackProxy.setWebViewClient(null); 1622 mCallbackProxy.setWebChromeClient(null); 1623 // Tell WebViewCore to destroy itself 1624 synchronized (this) { 1625 WebViewCore webViewCore = mWebViewCore; 1626 mWebViewCore = null; // prevent using partial webViewCore 1627 webViewCore.destroy(); 1628 } 1629 // Remove any pending messages that might not be serviced yet. 1630 mPrivateHandler.removeCallbacksAndMessages(null); 1631 mCallbackProxy.removeCallbacksAndMessages(null); 1632 // Wake up the WebCore thread just in case it is waiting for a 1633 // JavaScript dialog. 1634 synchronized (mCallbackProxy) { 1635 mCallbackProxy.notify(); 1636 } 1637 } 1638 if (mNativeClass != 0) { 1639 nativeDestroy(); 1640 mNativeClass = 0; 1641 } 1642 } 1643 1644 /** 1645 * Enables platform notifications of data state and proxy changes. 1646 * Notifications are enabled by default. 1647 * 1648 * @deprecated This method is now obsolete. 1649 */ 1650 @Deprecated 1651 public static void enablePlatformNotifications() { 1652 checkThread(); 1653 synchronized (WebView.class) { 1654 Network.enablePlatformNotifications(); 1655 sNotificationsEnabled = true; 1656 Context context = JniUtil.getContext(); 1657 if (context != null) 1658 setupProxyListener(context); 1659 } 1660 } 1661 1662 /** 1663 * Disables platform notifications of data state and proxy changes. 1664 * Notifications are enabled by default. 1665 * 1666 * @deprecated This method is now obsolete. 1667 */ 1668 @Deprecated 1669 public static void disablePlatformNotifications() { 1670 checkThread(); 1671 synchronized (WebView.class) { 1672 Network.disablePlatformNotifications(); 1673 sNotificationsEnabled = false; 1674 Context context = JniUtil.getContext(); 1675 if (context != null) 1676 disableProxyListener(context); 1677 } 1678 } 1679 1680 /** 1681 * Sets JavaScript engine flags. 1682 * 1683 * @param flags JS engine flags in a String 1684 * 1685 * @hide pending API solidification 1686 */ 1687 public void setJsFlags(String flags) { 1688 checkThread(); 1689 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1690 } 1691 1692 /** 1693 * Inform WebView of the network state. This is used to set 1694 * the JavaScript property window.navigator.isOnline and 1695 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1696 * @param networkUp boolean indicating if network is available 1697 */ 1698 public void setNetworkAvailable(boolean networkUp) { 1699 checkThread(); 1700 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1701 networkUp ? 1 : 0, 0); 1702 } 1703 1704 /** 1705 * Inform WebView about the current network type. 1706 * {@hide} 1707 */ 1708 public void setNetworkType(String type, String subtype) { 1709 checkThread(); 1710 Map<String, String> map = new HashMap<String, String>(); 1711 map.put("type", type); 1712 map.put("subtype", subtype); 1713 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1714 } 1715 /** 1716 * Save the state of this WebView used in 1717 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1718 * method no longer stores the display data for this WebView. The previous 1719 * behavior could potentially leak files if {@link #restoreState} was never 1720 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1721 * and restoring the display data. 1722 * @param outState The Bundle to store the WebView state. 1723 * @return The same copy of the back/forward list used to save the state. If 1724 * saveState fails, the returned list will be null. 1725 * @see #savePicture 1726 * @see #restorePicture 1727 */ 1728 public WebBackForwardList saveState(Bundle outState) { 1729 checkThread(); 1730 if (outState == null) { 1731 return null; 1732 } 1733 // We grab a copy of the back/forward list because a client of WebView 1734 // may have invalidated the history list by calling clearHistory. 1735 WebBackForwardList list = copyBackForwardList(); 1736 final int currentIndex = list.getCurrentIndex(); 1737 final int size = list.getSize(); 1738 // We should fail saving the state if the list is empty or the index is 1739 // not in a valid range. 1740 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1741 return null; 1742 } 1743 outState.putInt("index", currentIndex); 1744 // FIXME: This should just be a byte[][] instead of ArrayList but 1745 // Parcel.java does not have the code to handle multi-dimensional 1746 // arrays. 1747 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1748 for (int i = 0; i < size; i++) { 1749 WebHistoryItem item = list.getItemAtIndex(i); 1750 if (null == item) { 1751 // FIXME: this shouldn't happen 1752 // need to determine how item got set to null 1753 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1754 return null; 1755 } 1756 byte[] data = item.getFlattenedData(); 1757 if (data == null) { 1758 // It would be very odd to not have any data for a given history 1759 // item. And we will fail to rebuild the history list without 1760 // flattened data. 1761 return null; 1762 } 1763 history.add(data); 1764 } 1765 outState.putSerializable("history", history); 1766 if (mCertificate != null) { 1767 outState.putBundle("certificate", 1768 SslCertificate.saveState(mCertificate)); 1769 } 1770 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1771 mZoomManager.saveZoomState(outState); 1772 return list; 1773 } 1774 1775 /** 1776 * Save the current display data to the Bundle given. Used in conjunction 1777 * with {@link #saveState}. 1778 * @param b A Bundle to store the display data. 1779 * @param dest The file to store the serialized picture data. Will be 1780 * overwritten with this WebView's picture data. 1781 * @return True if the picture was successfully saved. 1782 * @deprecated This method is now obsolete. 1783 */ 1784 @Deprecated 1785 public boolean savePicture(Bundle b, final File dest) { 1786 checkThread(); 1787 if (dest == null || b == null) { 1788 return false; 1789 } 1790 final Picture p = capturePicture(); 1791 // Use a temporary file while writing to ensure the destination file 1792 // contains valid data. 1793 final File temp = new File(dest.getPath() + ".writing"); 1794 new Thread(new Runnable() { 1795 public void run() { 1796 FileOutputStream out = null; 1797 try { 1798 out = new FileOutputStream(temp); 1799 p.writeToStream(out); 1800 // Writing the picture succeeded, rename the temporary file 1801 // to the destination. 1802 temp.renameTo(dest); 1803 } catch (Exception e) { 1804 // too late to do anything about it. 1805 } finally { 1806 if (out != null) { 1807 try { 1808 out.close(); 1809 } catch (Exception e) { 1810 // Can't do anything about that 1811 } 1812 } 1813 temp.delete(); 1814 } 1815 } 1816 }).start(); 1817 // now update the bundle 1818 b.putInt("scrollX", mScrollX); 1819 b.putInt("scrollY", mScrollY); 1820 mZoomManager.saveZoomState(b); 1821 return true; 1822 } 1823 1824 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1825 int sx = b.getInt("scrollX", 0); 1826 int sy = b.getInt("scrollY", 0); 1827 1828 mDrawHistory = true; 1829 mHistoryPicture = p; 1830 1831 mScrollX = sx; 1832 mScrollY = sy; 1833 mZoomManager.restoreZoomState(b); 1834 final float scale = mZoomManager.getScale(); 1835 mHistoryWidth = Math.round(p.getWidth() * scale); 1836 mHistoryHeight = Math.round(p.getHeight() * scale); 1837 1838 invalidate(); 1839 } 1840 1841 /** 1842 * Restore the display data that was save in {@link #savePicture}. Used in 1843 * conjunction with {@link #restoreState}. 1844 * 1845 * Note that this will not work if the WebView is hardware accelerated. 1846 * @param b A Bundle containing the saved display data. 1847 * @param src The file where the picture data was stored. 1848 * @return True if the picture was successfully restored. 1849 * @deprecated This method is now obsolete. 1850 */ 1851 @Deprecated 1852 public boolean restorePicture(Bundle b, File src) { 1853 checkThread(); 1854 if (src == null || b == null) { 1855 return false; 1856 } 1857 if (!src.exists()) { 1858 return false; 1859 } 1860 try { 1861 final FileInputStream in = new FileInputStream(src); 1862 final Bundle copy = new Bundle(b); 1863 new Thread(new Runnable() { 1864 public void run() { 1865 try { 1866 final Picture p = Picture.createFromStream(in); 1867 if (p != null) { 1868 // Post a runnable on the main thread to update the 1869 // history picture fields. 1870 mPrivateHandler.post(new Runnable() { 1871 public void run() { 1872 restoreHistoryPictureFields(p, copy); 1873 } 1874 }); 1875 } 1876 } finally { 1877 try { 1878 in.close(); 1879 } catch (Exception e) { 1880 // Nothing we can do now. 1881 } 1882 } 1883 } 1884 }).start(); 1885 } catch (FileNotFoundException e){ 1886 e.printStackTrace(); 1887 } 1888 return true; 1889 } 1890 1891 /** 1892 * Saves the view data to the output stream. The output is highly 1893 * version specific, and may not be able to be loaded by newer versions 1894 * of WebView. 1895 * @param stream The {@link OutputStream} to save to 1896 * @return True if saved successfully 1897 * @hide 1898 */ 1899 public boolean saveViewState(OutputStream stream) { 1900 try { 1901 return ViewStateSerializer.serializeViewState(stream, this); 1902 } catch (IOException e) { 1903 Log.w(LOGTAG, "Failed to saveViewState", e); 1904 } 1905 return false; 1906 } 1907 1908 /** 1909 * Loads the view data from the input stream. See 1910 * {@link #saveViewState(OutputStream)} for more information. 1911 * @param stream The {@link InputStream} to load from 1912 * @return True if loaded successfully 1913 * @hide 1914 */ 1915 public boolean loadViewState(InputStream stream) { 1916 try { 1917 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1918 mBlockWebkitViewMessages = true; 1919 setNewPicture(mLoadedPicture, true); 1920 return true; 1921 } catch (IOException e) { 1922 Log.w(LOGTAG, "Failed to loadViewState", e); 1923 } 1924 return false; 1925 } 1926 1927 /** 1928 * Clears the view state set with {@link #loadViewState(InputStream)}. 1929 * This WebView will then switch to showing the content from webkit 1930 * @hide 1931 */ 1932 public void clearViewState() { 1933 mBlockWebkitViewMessages = false; 1934 mLoadedPicture = null; 1935 invalidate(); 1936 } 1937 1938 /** 1939 * Restore the state of this WebView from the given map used in 1940 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1941 * be called to restore the state of the WebView before using the object. If 1942 * it is called after the WebView has had a chance to build state (load 1943 * pages, create a back/forward list, etc.) there may be undesirable 1944 * side-effects. Please note that this method no longer restores the 1945 * display data for this WebView. See {@link #savePicture} and {@link 1946 * #restorePicture} for saving and restoring the display data. 1947 * @param inState The incoming Bundle of state. 1948 * @return The restored back/forward list or null if restoreState failed. 1949 * @see #savePicture 1950 * @see #restorePicture 1951 */ 1952 public WebBackForwardList restoreState(Bundle inState) { 1953 checkThread(); 1954 WebBackForwardList returnList = null; 1955 if (inState == null) { 1956 return returnList; 1957 } 1958 if (inState.containsKey("index") && inState.containsKey("history")) { 1959 mCertificate = SslCertificate.restoreState( 1960 inState.getBundle("certificate")); 1961 1962 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1963 final int index = inState.getInt("index"); 1964 // We can't use a clone of the list because we need to modify the 1965 // shared copy, so synchronize instead to prevent concurrent 1966 // modifications. 1967 synchronized (list) { 1968 final List<byte[]> history = 1969 (List<byte[]>) inState.getSerializable("history"); 1970 final int size = history.size(); 1971 // Check the index bounds so we don't crash in native code while 1972 // restoring the history index. 1973 if (index < 0 || index >= size) { 1974 return null; 1975 } 1976 for (int i = 0; i < size; i++) { 1977 byte[] data = history.remove(0); 1978 if (data == null) { 1979 // If we somehow have null data, we cannot reconstruct 1980 // the item and thus our history list cannot be rebuilt. 1981 return null; 1982 } 1983 WebHistoryItem item = new WebHistoryItem(data); 1984 list.addHistoryItem(item); 1985 } 1986 // Grab the most recent copy to return to the caller. 1987 returnList = copyBackForwardList(); 1988 // Update the copy to have the correct index. 1989 returnList.setCurrentIndex(index); 1990 } 1991 // Restore private browsing setting. 1992 if (inState.getBoolean("privateBrowsingEnabled")) { 1993 getSettings().setPrivateBrowsingEnabled(true); 1994 } 1995 mZoomManager.restoreZoomState(inState); 1996 // Remove all pending messages because we are restoring previous 1997 // state. 1998 mWebViewCore.removeMessages(); 1999 // Send a restore state message. 2000 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2001 } 2002 return returnList; 2003 } 2004 2005 /** 2006 * Load the given url with the extra headers. 2007 * @param url The url of the resource to load. 2008 * @param extraHeaders The extra headers sent with this url. This should not 2009 * include the common headers like "user-agent". If it does, it 2010 * will be replaced by the intrinsic value of the WebView. 2011 */ 2012 public void loadUrl(String url, Map<String, String> extraHeaders) { 2013 checkThread(); 2014 loadUrlImpl(url, extraHeaders); 2015 } 2016 2017 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2018 switchOutDrawHistory(); 2019 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2020 arg.mUrl = url; 2021 arg.mExtraHeaders = extraHeaders; 2022 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2023 clearHelpers(); 2024 } 2025 2026 /** 2027 * Load the given url. 2028 * @param url The url of the resource to load. 2029 */ 2030 public void loadUrl(String url) { 2031 checkThread(); 2032 loadUrlImpl(url); 2033 } 2034 2035 private void loadUrlImpl(String url) { 2036 if (url == null) { 2037 return; 2038 } 2039 loadUrlImpl(url, null); 2040 } 2041 2042 /** 2043 * Load the url with postData using "POST" method into the WebView. If url 2044 * is not a network url, it will be loaded with {link 2045 * {@link #loadUrl(String)} instead. 2046 * 2047 * @param url The url of the resource to load. 2048 * @param postData The data will be passed to "POST" request. 2049 */ 2050 public void postUrl(String url, byte[] postData) { 2051 checkThread(); 2052 if (URLUtil.isNetworkUrl(url)) { 2053 switchOutDrawHistory(); 2054 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2055 arg.mUrl = url; 2056 arg.mPostData = postData; 2057 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2058 clearHelpers(); 2059 } else { 2060 loadUrlImpl(url); 2061 } 2062 } 2063 2064 /** 2065 * Load the given data into the WebView using a 'data' scheme URL. 2066 * <p> 2067 * Note that JavaScript's same origin policy means that script running in a 2068 * page loaded using this method will be unable to access content loaded 2069 * using any scheme other than 'data', including 'http(s)'. To avoid this 2070 * restriction, use {@link 2071 * #loadDataWithBaseURL(String,String,String,String,String) 2072 * loadDataWithBaseURL()} with an appropriate base URL. 2073 * <p> 2074 * If the value of the encoding parameter is 'base64', then the data must 2075 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2076 * octets inside the range of safe URL characters and use the standard %xx 2077 * hex encoding of URLs for octets outside that range. 2078 * <p> 2079 * The 'data' scheme URL formed by this method uses the default US-ASCII 2080 * charset. If you need need to set a different charset, you should form a 2081 * 'data' scheme URL which specifies a charset parameter and call 2082 * {@link #loadUrl(String)} instead. 2083 * @param data A String of data in the given encoding. 2084 * @param mimeType The MIMEType of the data, e.g. 'text/html'. 2085 * @param encoding The encoding of the data. 2086 */ 2087 public void loadData(String data, String mimeType, String encoding) { 2088 checkThread(); 2089 loadDataImpl(data, mimeType, encoding); 2090 } 2091 2092 private void loadDataImpl(String data, String mimeType, String encoding) { 2093 StringBuilder dataUrl = new StringBuilder("data:"); 2094 dataUrl.append(mimeType); 2095 if ("base64".equals(encoding)) { 2096 dataUrl.append(";base64"); 2097 } 2098 dataUrl.append(","); 2099 dataUrl.append(data); 2100 loadUrlImpl(dataUrl.toString()); 2101 } 2102 2103 /** 2104 * Load the given data into the WebView, using baseUrl as the base URL for 2105 * the content. The base URL is used both to resolve relative URLs and when 2106 * applying JavaScript's same origin policy. The historyUrl is used for the 2107 * history entry. 2108 * <p> 2109 * Note that content specified in this way can access local device files 2110 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2111 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2112 * <p> 2113 * If the base URL uses the data scheme, this method is equivalent to 2114 * calling {@link #loadData(String,String,String) loadData()} and the 2115 * historyUrl is ignored. 2116 * @param baseUrl URL to use as the page's base URL. If null defaults to 2117 * 'about:blank' 2118 * @param data A String of data in the given encoding. 2119 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2120 * defaults to 'text/html'. 2121 * @param encoding The encoding of the data. 2122 * @param historyUrl URL to use as the history entry, if null defaults to 2123 * 'about:blank'. 2124 */ 2125 public void loadDataWithBaseURL(String baseUrl, String data, 2126 String mimeType, String encoding, String historyUrl) { 2127 checkThread(); 2128 2129 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2130 loadDataImpl(data, mimeType, encoding); 2131 return; 2132 } 2133 switchOutDrawHistory(); 2134 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2135 arg.mBaseUrl = baseUrl; 2136 arg.mData = data; 2137 arg.mMimeType = mimeType; 2138 arg.mEncoding = encoding; 2139 arg.mHistoryUrl = historyUrl; 2140 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2141 clearHelpers(); 2142 } 2143 2144 /** 2145 * Saves the current view as a web archive. 2146 * 2147 * @param filename The filename where the archive should be placed. 2148 */ 2149 public void saveWebArchive(String filename) { 2150 checkThread(); 2151 saveWebArchiveImpl(filename, false, null); 2152 } 2153 2154 /* package */ static class SaveWebArchiveMessage { 2155 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2156 mBasename = basename; 2157 mAutoname = autoname; 2158 mCallback = callback; 2159 } 2160 2161 /* package */ final String mBasename; 2162 /* package */ final boolean mAutoname; 2163 /* package */ final ValueCallback<String> mCallback; 2164 /* package */ String mResultFile; 2165 } 2166 2167 /** 2168 * Saves the current view as a web archive. 2169 * 2170 * @param basename The filename where the archive should be placed. 2171 * @param autoname If false, takes basename to be a file. If true, basename 2172 * is assumed to be a directory in which a filename will be 2173 * chosen according to the url of the current page. 2174 * @param callback Called after the web archive has been saved. The 2175 * parameter for onReceiveValue will either be the filename 2176 * under which the file was saved, or null if saving the 2177 * file failed. 2178 */ 2179 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2180 checkThread(); 2181 saveWebArchiveImpl(basename, autoname, callback); 2182 } 2183 2184 private void saveWebArchiveImpl(String basename, boolean autoname, 2185 ValueCallback<String> callback) { 2186 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2187 new SaveWebArchiveMessage(basename, autoname, callback)); 2188 } 2189 2190 /** 2191 * Stop the current load. 2192 */ 2193 public void stopLoading() { 2194 checkThread(); 2195 // TODO: should we clear all the messages in the queue before sending 2196 // STOP_LOADING? 2197 switchOutDrawHistory(); 2198 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2199 } 2200 2201 /** 2202 * Reload the current url. 2203 */ 2204 public void reload() { 2205 checkThread(); 2206 clearHelpers(); 2207 switchOutDrawHistory(); 2208 mWebViewCore.sendMessage(EventHub.RELOAD); 2209 } 2210 2211 /** 2212 * Return true if this WebView has a back history item. 2213 * @return True iff this WebView has a back history item. 2214 */ 2215 public boolean canGoBack() { 2216 checkThread(); 2217 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2218 synchronized (l) { 2219 if (l.getClearPending()) { 2220 return false; 2221 } else { 2222 return l.getCurrentIndex() > 0; 2223 } 2224 } 2225 } 2226 2227 /** 2228 * Go back in the history of this WebView. 2229 */ 2230 public void goBack() { 2231 checkThread(); 2232 goBackOrForwardImpl(-1); 2233 } 2234 2235 /** 2236 * Return true if this WebView has a forward history item. 2237 * @return True iff this Webview has a forward history item. 2238 */ 2239 public boolean canGoForward() { 2240 checkThread(); 2241 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2242 synchronized (l) { 2243 if (l.getClearPending()) { 2244 return false; 2245 } else { 2246 return l.getCurrentIndex() < l.getSize() - 1; 2247 } 2248 } 2249 } 2250 2251 /** 2252 * Go forward in the history of this WebView. 2253 */ 2254 public void goForward() { 2255 checkThread(); 2256 goBackOrForwardImpl(1); 2257 } 2258 2259 /** 2260 * Return true if the page can go back or forward the given 2261 * number of steps. 2262 * @param steps The negative or positive number of steps to move the 2263 * history. 2264 */ 2265 public boolean canGoBackOrForward(int steps) { 2266 checkThread(); 2267 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2268 synchronized (l) { 2269 if (l.getClearPending()) { 2270 return false; 2271 } else { 2272 int newIndex = l.getCurrentIndex() + steps; 2273 return newIndex >= 0 && newIndex < l.getSize(); 2274 } 2275 } 2276 } 2277 2278 /** 2279 * Go to the history item that is the number of steps away from 2280 * the current item. Steps is negative if backward and positive 2281 * if forward. 2282 * @param steps The number of steps to take back or forward in the back 2283 * forward list. 2284 */ 2285 public void goBackOrForward(int steps) { 2286 checkThread(); 2287 goBackOrForwardImpl(steps); 2288 } 2289 2290 private void goBackOrForwardImpl(int steps) { 2291 goBackOrForward(steps, false); 2292 } 2293 2294 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2295 if (steps != 0) { 2296 clearHelpers(); 2297 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2298 ignoreSnapshot ? 1 : 0); 2299 } 2300 } 2301 2302 /** 2303 * Returns true if private browsing is enabled in this WebView. 2304 */ 2305 public boolean isPrivateBrowsingEnabled() { 2306 checkThread(); 2307 return getSettings().isPrivateBrowsingEnabled(); 2308 } 2309 2310 private void startPrivateBrowsing() { 2311 getSettings().setPrivateBrowsingEnabled(true); 2312 } 2313 2314 private boolean extendScroll(int y) { 2315 int finalY = mScroller.getFinalY(); 2316 int newY = pinLocY(finalY + y); 2317 if (newY == finalY) return false; 2318 mScroller.setFinalY(newY); 2319 mScroller.extendDuration(computeDuration(0, y)); 2320 return true; 2321 } 2322 2323 /** 2324 * Scroll the contents of the view up by half the view size 2325 * @param top true to jump to the top of the page 2326 * @return true if the page was scrolled 2327 */ 2328 public boolean pageUp(boolean top) { 2329 checkThread(); 2330 if (mNativeClass == 0) { 2331 return false; 2332 } 2333 nativeClearCursor(); // start next trackball movement from page edge 2334 if (top) { 2335 // go to the top of the document 2336 return pinScrollTo(mScrollX, 0, true, 0); 2337 } 2338 // Page up 2339 int h = getHeight(); 2340 int y; 2341 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2342 y = -h + PAGE_SCROLL_OVERLAP; 2343 } else { 2344 y = -h / 2; 2345 } 2346 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2347 : extendScroll(y); 2348 } 2349 2350 /** 2351 * Scroll the contents of the view down by half the page size 2352 * @param bottom true to jump to bottom of page 2353 * @return true if the page was scrolled 2354 */ 2355 public boolean pageDown(boolean bottom) { 2356 checkThread(); 2357 if (mNativeClass == 0) { 2358 return false; 2359 } 2360 nativeClearCursor(); // start next trackball movement from page edge 2361 if (bottom) { 2362 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2363 } 2364 // Page down. 2365 int h = getHeight(); 2366 int y; 2367 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2368 y = h - PAGE_SCROLL_OVERLAP; 2369 } else { 2370 y = h / 2; 2371 } 2372 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2373 : extendScroll(y); 2374 } 2375 2376 /** 2377 * Clear the view so that onDraw() will draw nothing but white background, 2378 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2379 */ 2380 public void clearView() { 2381 checkThread(); 2382 mContentWidth = 0; 2383 mContentHeight = 0; 2384 setBaseLayer(0, null, false, false, false); 2385 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2386 } 2387 2388 /** 2389 * Return a new picture that captures the current display of the webview. 2390 * This is a copy of the display, and will be unaffected if the webview 2391 * later loads a different URL. 2392 * 2393 * @return a picture containing the current contents of the view. Note this 2394 * picture is of the entire document, and is not restricted to the 2395 * bounds of the view. 2396 */ 2397 public Picture capturePicture() { 2398 checkThread(); 2399 if (mNativeClass == 0) return null; 2400 Picture result = new Picture(); 2401 nativeCopyBaseContentToPicture(result); 2402 return result; 2403 } 2404 2405 /** 2406 * Return true if the browser is displaying a TextView for text input. 2407 */ 2408 private boolean inEditingMode() { 2409 return mWebTextView != null && mWebTextView.getParent() != null; 2410 } 2411 2412 /** 2413 * Remove the WebTextView. 2414 */ 2415 private void clearTextEntry() { 2416 if (inEditingMode()) { 2417 mWebTextView.remove(); 2418 } else { 2419 // The keyboard may be open with the WebView as the served view 2420 hideSoftKeyboard(); 2421 } 2422 } 2423 2424 /** 2425 * Return the current scale of the WebView 2426 * @return The current scale. 2427 */ 2428 public float getScale() { 2429 checkThread(); 2430 return mZoomManager.getScale(); 2431 } 2432 2433 // Called by JNI. Returns the scale to apply to the text selection handles 2434 /* package */ float getTextHandleScale() { 2435 float density = mContext.getResources().getDisplayMetrics().density; 2436 return density / getScale(); 2437 } 2438 2439 /** 2440 * Return the reading level scale of the WebView 2441 * @return The reading level scale. 2442 */ 2443 /*package*/ float getReadingLevelScale() { 2444 return mZoomManager.getReadingLevelScale(); 2445 } 2446 2447 /** 2448 * Set the initial scale for the WebView. 0 means default. If 2449 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2450 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2451 * WebView starts will this value as initial scale. 2452 * 2453 * @param scaleInPercent The initial scale in percent. 2454 */ 2455 public void setInitialScale(int scaleInPercent) { 2456 checkThread(); 2457 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2458 } 2459 2460 /** 2461 * Invoke the graphical zoom picker widget for this WebView. This will 2462 * result in the zoom widget appearing on the screen to control the zoom 2463 * level of this WebView. 2464 */ 2465 public void invokeZoomPicker() { 2466 checkThread(); 2467 if (!getSettings().supportZoom()) { 2468 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2469 return; 2470 } 2471 clearHelpers(); 2472 mZoomManager.invokeZoomPicker(); 2473 } 2474 2475 /** 2476 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2477 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2478 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2479 * anchor does not have a url or if it is a JavaScript url, the type will 2480 * be UNKNOWN_TYPE and the url has to be retrieved through 2481 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2482 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2483 * the "extra" field. A type of 2484 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2485 * a child node. If a phone number is found, the HitTestResult type is set 2486 * to PHONE_TYPE and the phone number is set in the "extra" field of 2487 * HitTestResult. If a map address is found, the HitTestResult type is set 2488 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2489 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2490 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2491 * HitTestResult type is set to UNKNOWN_TYPE. 2492 */ 2493 public HitTestResult getHitTestResult() { 2494 checkThread(); 2495 return hitTestResult(mInitialHitTestResult); 2496 } 2497 2498 private HitTestResult hitTestResult(HitTestResult fallback) { 2499 if (mNativeClass == 0) { 2500 return null; 2501 } 2502 2503 HitTestResult result = new HitTestResult(); 2504 if (nativeHasCursorNode()) { 2505 if (nativeCursorIsTextInput()) { 2506 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2507 } else { 2508 String text = nativeCursorText(); 2509 if (text != null) { 2510 if (text.startsWith(SCHEME_TEL)) { 2511 result.setType(HitTestResult.PHONE_TYPE); 2512 result.setExtra(text.substring(SCHEME_TEL.length())); 2513 } else if (text.startsWith(SCHEME_MAILTO)) { 2514 result.setType(HitTestResult.EMAIL_TYPE); 2515 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2516 } else if (text.startsWith(SCHEME_GEO)) { 2517 result.setType(HitTestResult.GEO_TYPE); 2518 result.setExtra(URLDecoder.decode(text 2519 .substring(SCHEME_GEO.length()))); 2520 } else if (nativeCursorIsAnchor()) { 2521 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2522 result.setExtra(text); 2523 } 2524 } 2525 } 2526 } else if (fallback != null) { 2527 /* If webkit causes a rebuild while the long press is in progress, 2528 * the cursor node may be reset, even if it is still around. This 2529 * uses the cursor node saved when the touch began. Since the 2530 * nativeImageURI below only changes the result if it is successful, 2531 * this uses the data beneath the touch if available or the original 2532 * tap data otherwise. 2533 */ 2534 Log.v(LOGTAG, "hitTestResult use fallback"); 2535 result = fallback; 2536 } 2537 int type = result.getType(); 2538 if (type == HitTestResult.UNKNOWN_TYPE 2539 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2540 // Now check to see if it is an image. 2541 int contentX = viewToContentX(mLastTouchX + mScrollX); 2542 int contentY = viewToContentY(mLastTouchY + mScrollY); 2543 String text = nativeImageURI(contentX, contentY); 2544 if (text != null) { 2545 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2546 HitTestResult.IMAGE_TYPE : 2547 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2548 result.setExtra(text); 2549 } 2550 } 2551 return result; 2552 } 2553 2554 // Called by JNI when the DOM has changed the focus. Clear the focus so 2555 // that new keys will go to the newly focused field 2556 private void domChangedFocus() { 2557 if (inEditingMode()) { 2558 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2559 } 2560 } 2561 /** 2562 * Request the anchor or image element URL at the last tapped point. 2563 * If hrefMsg is null, this method returns immediately and does not 2564 * dispatch hrefMsg to its target. If the tapped point hits an image, 2565 * an anchor, or an image in an anchor, the message associates 2566 * strings in named keys in its data. The value paired with the key 2567 * may be an empty string. 2568 * 2569 * @param hrefMsg This message will be dispatched with the result of the 2570 * request. The message data contains three keys: 2571 * - "url" returns the anchor's href attribute. 2572 * - "title" returns the anchor's text. 2573 * - "src" returns the image's src attribute. 2574 */ 2575 public void requestFocusNodeHref(Message hrefMsg) { 2576 checkThread(); 2577 if (hrefMsg == null) { 2578 return; 2579 } 2580 int contentX = viewToContentX(mLastTouchX + mScrollX); 2581 int contentY = viewToContentY(mLastTouchY + mScrollY); 2582 if (nativeHasCursorNode()) { 2583 Rect cursorBounds = nativeGetCursorRingBounds(); 2584 if (!cursorBounds.contains(contentX, contentY)) { 2585 int slop = viewToContentDimension(mNavSlop); 2586 cursorBounds.inset(-slop, -slop); 2587 if (cursorBounds.contains(contentX, contentY)) { 2588 contentX = (int) cursorBounds.centerX(); 2589 contentY = (int) cursorBounds.centerY(); 2590 } 2591 } 2592 } 2593 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2594 contentX, contentY, hrefMsg); 2595 } 2596 2597 /** 2598 * Request the url of the image last touched by the user. msg will be sent 2599 * to its target with a String representing the url as its object. 2600 * 2601 * @param msg This message will be dispatched with the result of the request 2602 * as the data member with "url" as key. The result can be null. 2603 */ 2604 public void requestImageRef(Message msg) { 2605 checkThread(); 2606 if (0 == mNativeClass) return; // client isn't initialized 2607 int contentX = viewToContentX(mLastTouchX + mScrollX); 2608 int contentY = viewToContentY(mLastTouchY + mScrollY); 2609 String ref = nativeImageURI(contentX, contentY); 2610 Bundle data = msg.getData(); 2611 data.putString("url", ref); 2612 msg.setData(data); 2613 msg.sendToTarget(); 2614 } 2615 2616 static int pinLoc(int x, int viewMax, int docMax) { 2617// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2618 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2619 // pin the short document to the top/left of the screen 2620 x = 0; 2621// Log.d(LOGTAG, "--- center " + x); 2622 } else if (x < 0) { 2623 x = 0; 2624// Log.d(LOGTAG, "--- zero"); 2625 } else if (x + viewMax > docMax) { 2626 x = docMax - viewMax; 2627// Log.d(LOGTAG, "--- pin " + x); 2628 } 2629 return x; 2630 } 2631 2632 // Expects x in view coordinates 2633 int pinLocX(int x) { 2634 if (mInOverScrollMode) return x; 2635 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2636 } 2637 2638 // Expects y in view coordinates 2639 int pinLocY(int y) { 2640 if (mInOverScrollMode) return y; 2641 return pinLoc(y, getViewHeightWithTitle(), 2642 computeRealVerticalScrollRange() + getTitleHeight()); 2643 } 2644 2645 /** 2646 * A title bar which is embedded in this WebView, and scrolls along with it 2647 * vertically, but not horizontally. 2648 */ 2649 private View mTitleBar; 2650 2651 /** 2652 * the title bar rendering gravity 2653 */ 2654 private int mTitleGravity; 2655 2656 /** 2657 * Add or remove a title bar to be embedded into the WebView, and scroll 2658 * along with it vertically, while remaining in view horizontally. Pass 2659 * null to remove the title bar from the WebView, and return to drawing 2660 * the WebView normally without translating to account for the title bar. 2661 * @hide 2662 */ 2663 public void setEmbeddedTitleBar(View v) { 2664 if (mTitleBar == v) return; 2665 if (mTitleBar != null) { 2666 removeView(mTitleBar); 2667 } 2668 if (null != v) { 2669 addView(v, new AbsoluteLayout.LayoutParams( 2670 ViewGroup.LayoutParams.MATCH_PARENT, 2671 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2672 } 2673 mTitleBar = v; 2674 } 2675 2676 /** 2677 * Set where to render the embedded title bar 2678 * NO_GRAVITY at the top of the page 2679 * TOP at the top of the screen 2680 * @hide 2681 */ 2682 public void setTitleBarGravity(int gravity) { 2683 mTitleGravity = gravity; 2684 // force refresh 2685 invalidate(); 2686 } 2687 2688 /** 2689 * Given a distance in view space, convert it to content space. Note: this 2690 * does not reflect translation, just scaling, so this should not be called 2691 * with coordinates, but should be called for dimensions like width or 2692 * height. 2693 */ 2694 private int viewToContentDimension(int d) { 2695 return Math.round(d * mZoomManager.getInvScale()); 2696 } 2697 2698 /** 2699 * Given an x coordinate in view space, convert it to content space. Also 2700 * may be used for absolute heights (such as for the WebTextView's 2701 * textSize, which is unaffected by the height of the title bar). 2702 */ 2703 /*package*/ int viewToContentX(int x) { 2704 return viewToContentDimension(x); 2705 } 2706 2707 /** 2708 * Given a y coordinate in view space, convert it to content space. 2709 * Takes into account the height of the title bar if there is one 2710 * embedded into the WebView. 2711 */ 2712 /*package*/ int viewToContentY(int y) { 2713 return viewToContentDimension(y - getTitleHeight()); 2714 } 2715 2716 /** 2717 * Given a x coordinate in view space, convert it to content space. 2718 * Returns the result as a float. 2719 */ 2720 private float viewToContentXf(int x) { 2721 return x * mZoomManager.getInvScale(); 2722 } 2723 2724 /** 2725 * Given a y coordinate in view space, convert it to content space. 2726 * Takes into account the height of the title bar if there is one 2727 * embedded into the WebView. Returns the result as a float. 2728 */ 2729 private float viewToContentYf(int y) { 2730 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2731 } 2732 2733 /** 2734 * Given a distance in content space, convert it to view space. Note: this 2735 * does not reflect translation, just scaling, so this should not be called 2736 * with coordinates, but should be called for dimensions like width or 2737 * height. 2738 */ 2739 /*package*/ int contentToViewDimension(int d) { 2740 return Math.round(d * mZoomManager.getScale()); 2741 } 2742 2743 /** 2744 * Given an x coordinate in content space, convert it to view 2745 * space. 2746 */ 2747 /*package*/ int contentToViewX(int x) { 2748 return contentToViewDimension(x); 2749 } 2750 2751 /** 2752 * Given a y coordinate in content space, convert it to view 2753 * space. Takes into account the height of the title bar. 2754 */ 2755 /*package*/ int contentToViewY(int y) { 2756 return contentToViewDimension(y) + getTitleHeight(); 2757 } 2758 2759 private Rect contentToViewRect(Rect x) { 2760 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2761 contentToViewX(x.right), contentToViewY(x.bottom)); 2762 } 2763 2764 /* To invalidate a rectangle in content coordinates, we need to transform 2765 the rect into view coordinates, so we can then call invalidate(...). 2766 2767 Normally, we would just call contentToView[XY](...), which eventually 2768 calls Math.round(coordinate * mActualScale). However, for invalidates, 2769 we need to account for the slop that occurs with antialiasing. To 2770 address that, we are a little more liberal in the size of the rect that 2771 we invalidate. 2772 2773 This liberal calculation calls floor() for the top/left, and ceil() for 2774 the bottom/right coordinates. This catches the possible extra pixels of 2775 antialiasing that we might have missed with just round(). 2776 */ 2777 2778 // Called by JNI to invalidate the View, given rectangle coordinates in 2779 // content space 2780 private void viewInvalidate(int l, int t, int r, int b) { 2781 final float scale = mZoomManager.getScale(); 2782 final int dy = getTitleHeight(); 2783 invalidate((int)Math.floor(l * scale), 2784 (int)Math.floor(t * scale) + dy, 2785 (int)Math.ceil(r * scale), 2786 (int)Math.ceil(b * scale) + dy); 2787 } 2788 2789 // Called by JNI to invalidate the View after a delay, given rectangle 2790 // coordinates in content space 2791 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2792 final float scale = mZoomManager.getScale(); 2793 final int dy = getTitleHeight(); 2794 postInvalidateDelayed(delay, 2795 (int)Math.floor(l * scale), 2796 (int)Math.floor(t * scale) + dy, 2797 (int)Math.ceil(r * scale), 2798 (int)Math.ceil(b * scale) + dy); 2799 } 2800 2801 private void invalidateContentRect(Rect r) { 2802 viewInvalidate(r.left, r.top, r.right, r.bottom); 2803 } 2804 2805 // stop the scroll animation, and don't let a subsequent fling add 2806 // to the existing velocity 2807 private void abortAnimation() { 2808 mScroller.abortAnimation(); 2809 mLastVelocity = 0; 2810 } 2811 2812 /* call from webcoreview.draw(), so we're still executing in the UI thread 2813 */ 2814 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2815 2816 // premature data from webkit, ignore 2817 if ((w | h) == 0) { 2818 return; 2819 } 2820 2821 // don't abort a scroll animation if we didn't change anything 2822 if (mContentWidth != w || mContentHeight != h) { 2823 // record new dimensions 2824 mContentWidth = w; 2825 mContentHeight = h; 2826 // If history Picture is drawn, don't update scroll. They will be 2827 // updated when we get out of that mode. 2828 if (!mDrawHistory) { 2829 // repin our scroll, taking into account the new content size 2830 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2831 if (!mScroller.isFinished()) { 2832 // We are in the middle of a scroll. Repin the final scroll 2833 // position. 2834 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2835 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2836 } 2837 } 2838 } 2839 contentSizeChanged(updateLayout); 2840 } 2841 2842 // Used to avoid sending many visible rect messages. 2843 private Rect mLastVisibleRectSent; 2844 private Rect mLastGlobalRect; 2845 2846 Rect sendOurVisibleRect() { 2847 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2848 Rect rect = new Rect(); 2849 calcOurContentVisibleRect(rect); 2850 // Rect.equals() checks for null input. 2851 if (!rect.equals(mLastVisibleRectSent)) { 2852 if (!mBlockWebkitViewMessages) { 2853 Point pos = new Point(rect.left, rect.top); 2854 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2855 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2856 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2857 } 2858 mLastVisibleRectSent = rect; 2859 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2860 } 2861 Rect globalRect = new Rect(); 2862 if (getGlobalVisibleRect(globalRect) 2863 && !globalRect.equals(mLastGlobalRect)) { 2864 if (DebugFlags.WEB_VIEW) { 2865 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2866 + globalRect.top + ",r=" + globalRect.right + ",b=" 2867 + globalRect.bottom); 2868 } 2869 // TODO: the global offset is only used by windowRect() 2870 // in ChromeClientAndroid ; other clients such as touch 2871 // and mouse events could return view + screen relative points. 2872 if (!mBlockWebkitViewMessages) { 2873 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2874 } 2875 mLastGlobalRect = globalRect; 2876 } 2877 return rect; 2878 } 2879 2880 // Sets r to be the visible rectangle of our webview in view coordinates 2881 private void calcOurVisibleRect(Rect r) { 2882 Point p = new Point(); 2883 getGlobalVisibleRect(r, p); 2884 r.offset(-p.x, -p.y); 2885 } 2886 2887 // Sets r to be our visible rectangle in content coordinates 2888 private void calcOurContentVisibleRect(Rect r) { 2889 calcOurVisibleRect(r); 2890 r.left = viewToContentX(r.left); 2891 // viewToContentY will remove the total height of the title bar. Add 2892 // the visible height back in to account for the fact that if the title 2893 // bar is partially visible, the part of the visible rect which is 2894 // displaying our content is displaced by that amount. 2895 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2896 r.right = viewToContentX(r.right); 2897 r.bottom = viewToContentY(r.bottom); 2898 } 2899 2900 // Sets r to be our visible rectangle in content coordinates. We use this 2901 // method on the native side to compute the position of the fixed layers. 2902 // Uses floating coordinates (necessary to correctly place elements when 2903 // the scale factor is not 1) 2904 private void calcOurContentVisibleRectF(RectF r) { 2905 Rect ri = new Rect(0,0,0,0); 2906 calcOurVisibleRect(ri); 2907 r.left = viewToContentXf(ri.left); 2908 // viewToContentY will remove the total height of the title bar. Add 2909 // the visible height back in to account for the fact that if the title 2910 // bar is partially visible, the part of the visible rect which is 2911 // displaying our content is displaced by that amount. 2912 r.top = viewToContentYf(ri.top + getVisibleTitleHeightImpl()); 2913 r.right = viewToContentXf(ri.right); 2914 r.bottom = viewToContentYf(ri.bottom); 2915 } 2916 2917 static class ViewSizeData { 2918 int mWidth; 2919 int mHeight; 2920 float mHeightWidthRatio; 2921 int mActualViewHeight; 2922 int mTextWrapWidth; 2923 int mAnchorX; 2924 int mAnchorY; 2925 float mScale; 2926 boolean mIgnoreHeight; 2927 } 2928 2929 /** 2930 * Compute unzoomed width and height, and if they differ from the last 2931 * values we sent, send them to webkit (to be used as new viewport) 2932 * 2933 * @param force ensures that the message is sent to webkit even if the width 2934 * or height has not changed since the last message 2935 * 2936 * @return true if new values were sent 2937 */ 2938 boolean sendViewSizeZoom(boolean force) { 2939 if (mBlockWebkitViewMessages) return false; 2940 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2941 2942 int viewWidth = getViewWidth(); 2943 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2944 // This height could be fixed and be different from actual visible height. 2945 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2946 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2947 // Make the ratio more accurate than (newHeight / newWidth), since the 2948 // latter both are calculated and rounded. 2949 float heightWidthRatio = (float) viewHeight / viewWidth; 2950 /* 2951 * Because the native side may have already done a layout before the 2952 * View system was able to measure us, we have to send a height of 0 to 2953 * remove excess whitespace when we grow our width. This will trigger a 2954 * layout and a change in content size. This content size change will 2955 * mean that contentSizeChanged will either call this method directly or 2956 * indirectly from onSizeChanged. 2957 */ 2958 if (newWidth > mLastWidthSent && mWrapContent) { 2959 newHeight = 0; 2960 heightWidthRatio = 0; 2961 } 2962 // Actual visible content height. 2963 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2964 // Avoid sending another message if the dimensions have not changed. 2965 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2966 actualViewHeight != mLastActualHeightSent) { 2967 ViewSizeData data = new ViewSizeData(); 2968 data.mWidth = newWidth; 2969 data.mHeight = newHeight; 2970 data.mHeightWidthRatio = heightWidthRatio; 2971 data.mActualViewHeight = actualViewHeight; 2972 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2973 data.mScale = mZoomManager.getScale(); 2974 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2975 && !mHeightCanMeasure; 2976 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2977 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2978 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2979 mLastWidthSent = newWidth; 2980 mLastHeightSent = newHeight; 2981 mLastActualHeightSent = actualViewHeight; 2982 mZoomManager.clearDocumentAnchor(); 2983 return true; 2984 } 2985 return false; 2986 } 2987 2988 private int computeRealHorizontalScrollRange() { 2989 if (mDrawHistory) { 2990 return mHistoryWidth; 2991 } else { 2992 // to avoid rounding error caused unnecessary scrollbar, use floor 2993 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2994 } 2995 } 2996 2997 @Override 2998 protected int computeHorizontalScrollRange() { 2999 int range = computeRealHorizontalScrollRange(); 3000 3001 // Adjust reported range if overscrolled to compress the scroll bars 3002 final int scrollX = mScrollX; 3003 final int overscrollRight = computeMaxScrollX(); 3004 if (scrollX < 0) { 3005 range -= scrollX; 3006 } else if (scrollX > overscrollRight) { 3007 range += scrollX - overscrollRight; 3008 } 3009 3010 return range; 3011 } 3012 3013 @Override 3014 protected int computeHorizontalScrollOffset() { 3015 return Math.max(mScrollX, 0); 3016 } 3017 3018 private int computeRealVerticalScrollRange() { 3019 if (mDrawHistory) { 3020 return mHistoryHeight; 3021 } else { 3022 // to avoid rounding error caused unnecessary scrollbar, use floor 3023 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3024 } 3025 } 3026 3027 @Override 3028 protected int computeVerticalScrollRange() { 3029 int range = computeRealVerticalScrollRange(); 3030 3031 // Adjust reported range if overscrolled to compress the scroll bars 3032 final int scrollY = mScrollY; 3033 final int overscrollBottom = computeMaxScrollY(); 3034 if (scrollY < 0) { 3035 range -= scrollY; 3036 } else if (scrollY > overscrollBottom) { 3037 range += scrollY - overscrollBottom; 3038 } 3039 3040 return range; 3041 } 3042 3043 @Override 3044 protected int computeVerticalScrollOffset() { 3045 return Math.max(mScrollY - getTitleHeight(), 0); 3046 } 3047 3048 @Override 3049 protected int computeVerticalScrollExtent() { 3050 return getViewHeight(); 3051 } 3052 3053 /** @hide */ 3054 @Override 3055 protected void onDrawVerticalScrollBar(Canvas canvas, 3056 Drawable scrollBar, 3057 int l, int t, int r, int b) { 3058 if (mScrollY < 0) { 3059 t -= mScrollY; 3060 } 3061 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3062 scrollBar.draw(canvas); 3063 } 3064 3065 @Override 3066 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3067 boolean clampedY) { 3068 // Special-case layer scrolling so that we do not trigger normal scroll 3069 // updating. 3070 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3071 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 3072 mScrollingLayerRect.left = scrollX; 3073 mScrollingLayerRect.top = scrollY; 3074 invalidate(); 3075 return; 3076 } 3077 mInOverScrollMode = false; 3078 int maxX = computeMaxScrollX(); 3079 int maxY = computeMaxScrollY(); 3080 if (maxX == 0) { 3081 // do not over scroll x if the page just fits the screen 3082 scrollX = pinLocX(scrollX); 3083 } else if (scrollX < 0 || scrollX > maxX) { 3084 mInOverScrollMode = true; 3085 } 3086 if (scrollY < 0 || scrollY > maxY) { 3087 mInOverScrollMode = true; 3088 } 3089 3090 int oldX = mScrollX; 3091 int oldY = mScrollY; 3092 3093 super.scrollTo(scrollX, scrollY); 3094 3095 if (mOverScrollGlow != null) { 3096 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3097 } 3098 } 3099 3100 /** 3101 * Get the url for the current page. This is not always the same as the url 3102 * passed to WebViewClient.onPageStarted because although the load for 3103 * that url has begun, the current page may not have changed. 3104 * @return The url for the current page. 3105 */ 3106 public String getUrl() { 3107 checkThread(); 3108 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3109 return h != null ? h.getUrl() : null; 3110 } 3111 3112 /** 3113 * Get the original url for the current page. This is not always the same 3114 * as the url passed to WebViewClient.onPageStarted because although the 3115 * load for that url has begun, the current page may not have changed. 3116 * Also, there may have been redirects resulting in a different url to that 3117 * originally requested. 3118 * @return The url that was originally requested for the current page. 3119 */ 3120 public String getOriginalUrl() { 3121 checkThread(); 3122 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3123 return h != null ? h.getOriginalUrl() : null; 3124 } 3125 3126 /** 3127 * Get the title for the current page. This is the title of the current page 3128 * until WebViewClient.onReceivedTitle is called. 3129 * @return The title for the current page. 3130 */ 3131 public String getTitle() { 3132 checkThread(); 3133 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3134 return h != null ? h.getTitle() : null; 3135 } 3136 3137 /** 3138 * Get the favicon for the current page. This is the favicon of the current 3139 * page until WebViewClient.onReceivedIcon is called. 3140 * @return The favicon for the current page. 3141 */ 3142 public Bitmap getFavicon() { 3143 checkThread(); 3144 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3145 return h != null ? h.getFavicon() : null; 3146 } 3147 3148 /** 3149 * Get the touch icon url for the apple-touch-icon <link> element, or 3150 * a URL on this site's server pointing to the standard location of a 3151 * touch icon. 3152 * @hide 3153 */ 3154 public String getTouchIconUrl() { 3155 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3156 return h != null ? h.getTouchIconUrl() : null; 3157 } 3158 3159 /** 3160 * Get the progress for the current page. 3161 * @return The progress for the current page between 0 and 100. 3162 */ 3163 public int getProgress() { 3164 checkThread(); 3165 return mCallbackProxy.getProgress(); 3166 } 3167 3168 /** 3169 * @return the height of the HTML content. 3170 */ 3171 public int getContentHeight() { 3172 checkThread(); 3173 return mContentHeight; 3174 } 3175 3176 /** 3177 * @return the width of the HTML content. 3178 * @hide 3179 */ 3180 public int getContentWidth() { 3181 return mContentWidth; 3182 } 3183 3184 /** 3185 * @hide 3186 */ 3187 public int getPageBackgroundColor() { 3188 return nativeGetBackgroundColor(); 3189 } 3190 3191 /** 3192 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3193 * is a global requests, not restricted to just this webview. This can be 3194 * useful if the application has been paused. 3195 */ 3196 public void pauseTimers() { 3197 checkThread(); 3198 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3199 } 3200 3201 /** 3202 * Resume all layout, parsing, and JavaScript timers for all webviews. 3203 * This will resume dispatching all timers. 3204 */ 3205 public void resumeTimers() { 3206 checkThread(); 3207 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3208 } 3209 3210 /** 3211 * Call this to pause any extra processing associated with this WebView and 3212 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3213 * is taken offscreen, this could be called to reduce unnecessary CPU or 3214 * network traffic. When the WebView is again "active", call onResume(). 3215 * 3216 * Note that this differs from pauseTimers(), which affects all WebViews. 3217 */ 3218 public void onPause() { 3219 checkThread(); 3220 if (!mIsPaused) { 3221 mIsPaused = true; 3222 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3223 // We want to pause the current playing video when switching out 3224 // from the current WebView/tab. 3225 if (mHTML5VideoViewProxy != null) { 3226 mHTML5VideoViewProxy.pauseAndDispatch(); 3227 } 3228 } 3229 } 3230 3231 /** 3232 * Call this to resume a WebView after a previous call to onPause(). 3233 */ 3234 public void onResume() { 3235 checkThread(); 3236 if (mIsPaused) { 3237 mIsPaused = false; 3238 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3239 } 3240 } 3241 3242 /** 3243 * Returns true if the view is paused, meaning onPause() was called. Calling 3244 * onResume() sets the paused state back to false. 3245 * @hide 3246 */ 3247 public boolean isPaused() { 3248 return mIsPaused; 3249 } 3250 3251 /** 3252 * Call this to inform the view that memory is low so that it can 3253 * free any available memory. 3254 */ 3255 public void freeMemory() { 3256 checkThread(); 3257 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3258 } 3259 3260 /** 3261 * Clear the resource cache. Note that the cache is per-application, so 3262 * this will clear the cache for all WebViews used. 3263 * 3264 * @param includeDiskFiles If false, only the RAM cache is cleared. 3265 */ 3266 public void clearCache(boolean includeDiskFiles) { 3267 checkThread(); 3268 // Note: this really needs to be a static method as it clears cache for all 3269 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3270 // we can't make this static. 3271 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3272 includeDiskFiles ? 1 : 0, 0); 3273 } 3274 3275 /** 3276 * Make sure that clearing the form data removes the adapter from the 3277 * currently focused textfield if there is one. 3278 */ 3279 public void clearFormData() { 3280 checkThread(); 3281 if (inEditingMode()) { 3282 mWebTextView.setAdapterCustom(null); 3283 } 3284 } 3285 3286 /** 3287 * Tell the WebView to clear its internal back/forward list. 3288 */ 3289 public void clearHistory() { 3290 checkThread(); 3291 mCallbackProxy.getBackForwardList().setClearPending(); 3292 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3293 } 3294 3295 /** 3296 * Clear the SSL preferences table stored in response to proceeding with SSL 3297 * certificate errors. 3298 */ 3299 public void clearSslPreferences() { 3300 checkThread(); 3301 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3302 } 3303 3304 /** 3305 * Return the WebBackForwardList for this WebView. This contains the 3306 * back/forward list for use in querying each item in the history stack. 3307 * This is a copy of the private WebBackForwardList so it contains only a 3308 * snapshot of the current state. Multiple calls to this method may return 3309 * different objects. The object returned from this method will not be 3310 * updated to reflect any new state. 3311 */ 3312 public WebBackForwardList copyBackForwardList() { 3313 checkThread(); 3314 return mCallbackProxy.getBackForwardList().clone(); 3315 } 3316 3317 /* 3318 * Highlight and scroll to the next occurance of String in findAll. 3319 * Wraps the page infinitely, and scrolls. Must be called after 3320 * calling findAll. 3321 * 3322 * @param forward Direction to search. 3323 */ 3324 public void findNext(boolean forward) { 3325 checkThread(); 3326 if (0 == mNativeClass) return; // client isn't initialized 3327 nativeFindNext(forward); 3328 } 3329 3330 /* 3331 * Find all instances of find on the page and highlight them. 3332 * @param find String to find. 3333 * @return int The number of occurances of the String "find" 3334 * that were found. 3335 */ 3336 public int findAll(String find) { 3337 checkThread(); 3338 if (0 == mNativeClass) return 0; // client isn't initialized 3339 int result = find != null ? nativeFindAll(find.toLowerCase(), 3340 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3341 invalidate(); 3342 mLastFind = find; 3343 return result; 3344 } 3345 3346 /** 3347 * Start an ActionMode for finding text in this WebView. Only works if this 3348 * WebView is attached to the view system. 3349 * @param text If non-null, will be the initial text to search for. 3350 * Otherwise, the last String searched for in this WebView will 3351 * be used to start. 3352 * @param showIme If true, show the IME, assuming the user will begin typing. 3353 * If false and text is non-null, perform a find all. 3354 * @return boolean True if the find dialog is shown, false otherwise. 3355 */ 3356 public boolean showFindDialog(String text, boolean showIme) { 3357 checkThread(); 3358 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3359 if (getParent() == null || startActionMode(callback) == null) { 3360 // Could not start the action mode, so end Find on page 3361 return false; 3362 } 3363 mFindCallback = callback; 3364 setFindIsUp(true); 3365 mFindCallback.setWebView(this); 3366 if (showIme) { 3367 mFindCallback.showSoftInput(); 3368 } else if (text != null) { 3369 mFindCallback.setText(text); 3370 mFindCallback.findAll(); 3371 return true; 3372 } 3373 if (text == null) { 3374 text = mLastFind; 3375 } 3376 if (text != null) { 3377 mFindCallback.setText(text); 3378 } 3379 return true; 3380 } 3381 3382 /** 3383 * Keep track of the find callback so that we can remove its titlebar if 3384 * necessary. 3385 */ 3386 private FindActionModeCallback mFindCallback; 3387 3388 /** 3389 * Toggle whether the find dialog is showing, for both native and Java. 3390 */ 3391 private void setFindIsUp(boolean isUp) { 3392 mFindIsUp = isUp; 3393 if (0 == mNativeClass) return; // client isn't initialized 3394 nativeSetFindIsUp(isUp); 3395 } 3396 3397 /** 3398 * Return the index of the currently highlighted match. 3399 */ 3400 int findIndex() { 3401 if (0 == mNativeClass) return -1; 3402 return nativeFindIndex(); 3403 } 3404 3405 // Used to know whether the find dialog is open. Affects whether 3406 // or not we draw the highlights for matches. 3407 private boolean mFindIsUp; 3408 3409 // Keep track of the last string sent, so we can search again when find is 3410 // reopened. 3411 private String mLastFind; 3412 3413 /** 3414 * Return the first substring consisting of the address of a physical 3415 * location. Currently, only addresses in the United States are detected, 3416 * and consist of: 3417 * - a house number 3418 * - a street name 3419 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3420 * - a city name 3421 * - a state or territory, either spelled out or two-letter abbr. 3422 * - an optional 5 digit or 9 digit zip code. 3423 * 3424 * All names must be correctly capitalized, and the zip code, if present, 3425 * must be valid for the state. The street type must be a standard USPS 3426 * spelling or abbreviation. The state or territory must also be spelled 3427 * or abbreviated using USPS standards. The house number may not exceed 3428 * five digits. 3429 * @param addr The string to search for addresses. 3430 * 3431 * @return the address, or if no address is found, return null. 3432 */ 3433 public static String findAddress(String addr) { 3434 checkThread(); 3435 return findAddress(addr, false); 3436 } 3437 3438 /** 3439 * @hide 3440 * Return the first substring consisting of the address of a physical 3441 * location. Currently, only addresses in the United States are detected, 3442 * and consist of: 3443 * - a house number 3444 * - a street name 3445 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3446 * - a city name 3447 * - a state or territory, either spelled out or two-letter abbr. 3448 * - an optional 5 digit or 9 digit zip code. 3449 * 3450 * Names are optionally capitalized, and the zip code, if present, 3451 * must be valid for the state. The street type must be a standard USPS 3452 * spelling or abbreviation. The state or territory must also be spelled 3453 * or abbreviated using USPS standards. The house number may not exceed 3454 * five digits. 3455 * @param addr The string to search for addresses. 3456 * @param caseInsensitive addr Set to true to make search ignore case. 3457 * 3458 * @return the address, or if no address is found, return null. 3459 */ 3460 public static String findAddress(String addr, boolean caseInsensitive) { 3461 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3462 } 3463 3464 /* 3465 * Clear the highlighting surrounding text matches created by findAll. 3466 */ 3467 public void clearMatches() { 3468 checkThread(); 3469 if (mNativeClass == 0) 3470 return; 3471 nativeSetFindIsEmpty(); 3472 invalidate(); 3473 } 3474 3475 /** 3476 * Called when the find ActionMode ends. 3477 */ 3478 void notifyFindDialogDismissed() { 3479 mFindCallback = null; 3480 if (mWebViewCore == null) { 3481 return; 3482 } 3483 clearMatches(); 3484 setFindIsUp(false); 3485 // Now that the dialog has been removed, ensure that we scroll to a 3486 // location that is not beyond the end of the page. 3487 pinScrollTo(mScrollX, mScrollY, false, 0); 3488 invalidate(); 3489 } 3490 3491 /** 3492 * Query the document to see if it contains any image references. The 3493 * message object will be dispatched with arg1 being set to 1 if images 3494 * were found and 0 if the document does not reference any images. 3495 * @param response The message that will be dispatched with the result. 3496 */ 3497 public void documentHasImages(Message response) { 3498 checkThread(); 3499 if (response == null) { 3500 return; 3501 } 3502 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3503 } 3504 3505 /** 3506 * Request the scroller to abort any ongoing animation 3507 * 3508 * @hide 3509 */ 3510 public void stopScroll() { 3511 mScroller.forceFinished(true); 3512 mLastVelocity = 0; 3513 } 3514 3515 @Override 3516 public void computeScroll() { 3517 if (mScroller.computeScrollOffset()) { 3518 int oldX = mScrollX; 3519 int oldY = mScrollY; 3520 int x = mScroller.getCurrX(); 3521 int y = mScroller.getCurrY(); 3522 invalidate(); // So we draw again 3523 3524 if (!mScroller.isFinished()) { 3525 int rangeX = computeMaxScrollX(); 3526 int rangeY = computeMaxScrollY(); 3527 int overflingDistance = mOverflingDistance; 3528 3529 // Use the layer's scroll data if needed. 3530 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3531 oldX = mScrollingLayerRect.left; 3532 oldY = mScrollingLayerRect.top; 3533 rangeX = mScrollingLayerRect.right; 3534 rangeY = mScrollingLayerRect.bottom; 3535 // No overscrolling for layers. 3536 overflingDistance = 0; 3537 } 3538 3539 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3540 rangeX, rangeY, 3541 overflingDistance, overflingDistance, false); 3542 3543 if (mOverScrollGlow != null) { 3544 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3545 } 3546 } else { 3547 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3548 mScrollX = x; 3549 mScrollY = y; 3550 } else { 3551 // Update the layer position instead of WebView. 3552 nativeScrollLayer(mScrollingLayer, x, y); 3553 mScrollingLayerRect.left = x; 3554 mScrollingLayerRect.top = y; 3555 } 3556 abortAnimation(); 3557 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3558 nativeSetIsScrolling(false); 3559 if (!mBlockWebkitViewMessages) { 3560 WebViewCore.resumePriority(); 3561 if (!mSelectingText) { 3562 WebViewCore.resumeUpdatePicture(mWebViewCore); 3563 } 3564 } 3565 if (oldX != mScrollX || oldY != mScrollY) { 3566 sendOurVisibleRect(); 3567 } 3568 } 3569 } else { 3570 super.computeScroll(); 3571 } 3572 } 3573 3574 private static int computeDuration(int dx, int dy) { 3575 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3576 int duration = distance * 1000 / STD_SPEED; 3577 return Math.min(duration, MAX_DURATION); 3578 } 3579 3580 // helper to pin the scrollBy parameters (already in view coordinates) 3581 // returns true if the scroll was changed 3582 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3583 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3584 } 3585 // helper to pin the scrollTo parameters (already in view coordinates) 3586 // returns true if the scroll was changed 3587 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3588 x = pinLocX(x); 3589 y = pinLocY(y); 3590 int dx = x - mScrollX; 3591 int dy = y - mScrollY; 3592 3593 if ((dx | dy) == 0) { 3594 return false; 3595 } 3596 abortAnimation(); 3597 if (animate) { 3598 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3599 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3600 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3601 awakenScrollBars(mScroller.getDuration()); 3602 invalidate(); 3603 } else { 3604 scrollTo(x, y); 3605 } 3606 return true; 3607 } 3608 3609 // Scale from content to view coordinates, and pin. 3610 // Also called by jni webview.cpp 3611 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3612 if (mDrawHistory) { 3613 // disallow WebView to change the scroll position as History Picture 3614 // is used in the view system. 3615 // TODO: as we switchOutDrawHistory when trackball or navigation 3616 // keys are hit, this should be safe. Right? 3617 return false; 3618 } 3619 cx = contentToViewDimension(cx); 3620 cy = contentToViewDimension(cy); 3621 if (mHeightCanMeasure) { 3622 // move our visible rect according to scroll request 3623 if (cy != 0) { 3624 Rect tempRect = new Rect(); 3625 calcOurVisibleRect(tempRect); 3626 tempRect.offset(cx, cy); 3627 requestRectangleOnScreen(tempRect); 3628 } 3629 // FIXME: We scroll horizontally no matter what because currently 3630 // ScrollView and ListView will not scroll horizontally. 3631 // FIXME: Why do we only scroll horizontally if there is no 3632 // vertical scroll? 3633// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3634 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3635 } else { 3636 return pinScrollBy(cx, cy, animate, 0); 3637 } 3638 } 3639 3640 /** 3641 * Called by CallbackProxy when the page starts loading. 3642 * @param url The URL of the page which has started loading. 3643 */ 3644 /* package */ void onPageStarted(String url) { 3645 // every time we start a new page, we want to reset the 3646 // WebView certificate: if the new site is secure, we 3647 // will reload it and get a new certificate set; 3648 // if the new site is not secure, the certificate must be 3649 // null, and that will be the case 3650 setCertificate(null); 3651 3652 // reset the flag since we set to true in if need after 3653 // loading is see onPageFinished(Url) 3654 mAccessibilityScriptInjected = false; 3655 } 3656 3657 /** 3658 * Called by CallbackProxy when the page finishes loading. 3659 * @param url The URL of the page which has finished loading. 3660 */ 3661 /* package */ void onPageFinished(String url) { 3662 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3663 // If the user is now on a different page, or has scrolled the page 3664 // past the point where the title bar is offscreen, ignore the 3665 // scroll request. 3666 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3667 && mScrollX == 0 && mScrollY == 0) { 3668 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3669 SLIDE_TITLE_DURATION); 3670 } 3671 mPageThatNeedsToSlideTitleBarOffScreen = null; 3672 } 3673 mZoomManager.onPageFinished(url); 3674 injectAccessibilityForUrl(url); 3675 } 3676 3677 /** 3678 * This method injects accessibility in the loaded document if accessibility 3679 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3680 * If no URL specific script is found or JavaScript is disabled we fallback to 3681 * the default {@link AccessibilityInjector} implementation. 3682 * </p> 3683 * If the URL has the "axs" paramter set to 1 it has already done the 3684 * script injection so we do nothing. If the parameter is set to 0 3685 * the URL opts out accessibility script injection so we fall back to 3686 * the default {@link AccessibilityInjector}. 3687 * </p> 3688 * Note: If the user has not opted-in the accessibility script injection no scripts 3689 * are injected rather the default {@link AccessibilityInjector} implementation 3690 * is used. 3691 * 3692 * @param url The URL loaded by this {@link WebView}. 3693 */ 3694 private void injectAccessibilityForUrl(String url) { 3695 if (mWebViewCore == null) { 3696 return; 3697 } 3698 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3699 3700 if (!accessibilityManager.isEnabled()) { 3701 // it is possible that accessibility was turned off between reloads 3702 ensureAccessibilityScriptInjectorInstance(false); 3703 return; 3704 } 3705 3706 if (!getSettings().getJavaScriptEnabled()) { 3707 // no JS so we fallback to the basic buil-in support 3708 ensureAccessibilityScriptInjectorInstance(true); 3709 return; 3710 } 3711 3712 // check the URL "axs" parameter to choose appropriate action 3713 int axsParameterValue = getAxsUrlParameterValue(url); 3714 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3715 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3716 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3717 if (onDeviceScriptInjectionEnabled) { 3718 ensureAccessibilityScriptInjectorInstance(false); 3719 // neither script injected nor script injection opted out => we inject 3720 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3721 // TODO: Set this flag after successfull script injection. Maybe upon injection 3722 // the chooser should update the meta tag and we check it to declare success 3723 mAccessibilityScriptInjected = true; 3724 } else { 3725 // injection disabled so we fallback to the basic built-in support 3726 ensureAccessibilityScriptInjectorInstance(true); 3727 } 3728 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3729 // injection opted out so we fallback to the basic buil-in support 3730 ensureAccessibilityScriptInjectorInstance(true); 3731 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3732 ensureAccessibilityScriptInjectorInstance(false); 3733 // the URL provides accessibility but we still need to add our generic script 3734 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3735 } else { 3736 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3737 } 3738 } 3739 3740 /** 3741 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3742 * 3743 * @param present True to ensure an insance, false to ensure no instance. 3744 */ 3745 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3746 if (present) { 3747 if (mAccessibilityInjector == null) { 3748 mAccessibilityInjector = new AccessibilityInjector(this); 3749 } 3750 } else { 3751 mAccessibilityInjector = null; 3752 } 3753 } 3754 3755 /** 3756 * Gets the "axs" URL parameter value. 3757 * 3758 * @param url A url to fetch the paramter from. 3759 * @return The parameter value if such, -1 otherwise. 3760 */ 3761 private int getAxsUrlParameterValue(String url) { 3762 if (mMatchAxsUrlParameterPattern == null) { 3763 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3764 } 3765 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3766 if (matcher.find()) { 3767 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3768 return Integer.parseInt(keyValuePair.split("=")[1]); 3769 } 3770 return -1; 3771 } 3772 3773 /** 3774 * The URL of a page that sent a message to scroll the title bar off screen. 3775 * 3776 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3777 * title bar off the screen. Sometimes, the scroll position is set before 3778 * the page finishes loading. Rather than scrolling while the page is still 3779 * loading, keep track of the URL and new scroll position so we can perform 3780 * the scroll once the page finishes loading. 3781 */ 3782 private String mPageThatNeedsToSlideTitleBarOffScreen; 3783 3784 /** 3785 * The destination Y scroll position to be used when the page finishes 3786 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3787 */ 3788 private int mYDistanceToSlideTitleOffScreen; 3789 3790 // scale from content to view coordinates, and pin 3791 // return true if pin caused the final x/y different than the request cx/cy, 3792 // and a future scroll may reach the request cx/cy after our size has 3793 // changed 3794 // return false if the view scroll to the exact position as it is requested, 3795 // where negative numbers are taken to mean 0 3796 private boolean setContentScrollTo(int cx, int cy) { 3797 if (mDrawHistory) { 3798 // disallow WebView to change the scroll position as History Picture 3799 // is used in the view system. 3800 // One known case where this is called is that WebCore tries to 3801 // restore the scroll position. As history Picture already uses the 3802 // saved scroll position, it is ok to skip this. 3803 return false; 3804 } 3805 int vx; 3806 int vy; 3807 if ((cx | cy) == 0) { 3808 // If the page is being scrolled to (0,0), do not add in the title 3809 // bar's height, and simply scroll to (0,0). (The only other work 3810 // in contentToView_ is to multiply, so this would not change 0.) 3811 vx = 0; 3812 vy = 0; 3813 } else { 3814 vx = contentToViewX(cx); 3815 vy = contentToViewY(cy); 3816 } 3817// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3818// vx + " " + vy + "]"); 3819 // Some mobile sites attempt to scroll the title bar off the page by 3820 // scrolling to (0,1). If we are at the top left corner of the 3821 // page, assume this is an attempt to scroll off the title bar, and 3822 // animate the title bar off screen slowly enough that the user can see 3823 // it. 3824 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3825 && mTitleBar != null) { 3826 // FIXME: 100 should be defined somewhere as our max progress. 3827 if (getProgress() < 100) { 3828 // Wait to scroll the title bar off screen until the page has 3829 // finished loading. Keep track of the URL and the destination 3830 // Y position 3831 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3832 mYDistanceToSlideTitleOffScreen = vy; 3833 } else { 3834 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3835 } 3836 // Since we are animating, we have not yet reached the desired 3837 // scroll position. Do not return true to request another attempt 3838 return false; 3839 } 3840 pinScrollTo(vx, vy, false, 0); 3841 // If the request was to scroll to a negative coordinate, treat it as if 3842 // it was a request to scroll to 0 3843 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3844 return true; 3845 } else { 3846 return false; 3847 } 3848 } 3849 3850 // scale from content to view coordinates, and pin 3851 private void spawnContentScrollTo(int cx, int cy) { 3852 if (mDrawHistory) { 3853 // disallow WebView to change the scroll position as History Picture 3854 // is used in the view system. 3855 return; 3856 } 3857 int vx = contentToViewX(cx); 3858 int vy = contentToViewY(cy); 3859 pinScrollTo(vx, vy, true, 0); 3860 } 3861 3862 /** 3863 * These are from webkit, and are in content coordinate system (unzoomed) 3864 */ 3865 private void contentSizeChanged(boolean updateLayout) { 3866 // suppress 0,0 since we usually see real dimensions soon after 3867 // this avoids drawing the prev content in a funny place. If we find a 3868 // way to consolidate these notifications, this check may become 3869 // obsolete 3870 if ((mContentWidth | mContentHeight) == 0) { 3871 return; 3872 } 3873 3874 if (mHeightCanMeasure) { 3875 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3876 || updateLayout) { 3877 requestLayout(); 3878 } 3879 } else if (mWidthCanMeasure) { 3880 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3881 || updateLayout) { 3882 requestLayout(); 3883 } 3884 } else { 3885 // If we don't request a layout, try to send our view size to the 3886 // native side to ensure that WebCore has the correct dimensions. 3887 sendViewSizeZoom(false); 3888 } 3889 } 3890 3891 /** 3892 * Set the WebViewClient that will receive various notifications and 3893 * requests. This will replace the current handler. 3894 * @param client An implementation of WebViewClient. 3895 */ 3896 public void setWebViewClient(WebViewClient client) { 3897 checkThread(); 3898 mCallbackProxy.setWebViewClient(client); 3899 } 3900 3901 /** 3902 * Gets the WebViewClient 3903 * @return the current WebViewClient instance. 3904 * 3905 *@hide pending API council approval. 3906 */ 3907 public WebViewClient getWebViewClient() { 3908 return mCallbackProxy.getWebViewClient(); 3909 } 3910 3911 /** 3912 * Register the interface to be used when content can not be handled by 3913 * the rendering engine, and should be downloaded instead. This will replace 3914 * the current handler. 3915 * @param listener An implementation of DownloadListener. 3916 */ 3917 public void setDownloadListener(DownloadListener listener) { 3918 checkThread(); 3919 mCallbackProxy.setDownloadListener(listener); 3920 } 3921 3922 /** 3923 * Set the chrome handler. This is an implementation of WebChromeClient for 3924 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3925 * This will replace the current handler. 3926 * @param client An implementation of WebChromeClient. 3927 */ 3928 public void setWebChromeClient(WebChromeClient client) { 3929 checkThread(); 3930 mCallbackProxy.setWebChromeClient(client); 3931 } 3932 3933 /** 3934 * Gets the chrome handler. 3935 * @return the current WebChromeClient instance. 3936 * 3937 * @hide API council approval. 3938 */ 3939 public WebChromeClient getWebChromeClient() { 3940 return mCallbackProxy.getWebChromeClient(); 3941 } 3942 3943 /** 3944 * Set the back/forward list client. This is an implementation of 3945 * WebBackForwardListClient for handling new items and changes in the 3946 * history index. 3947 * @param client An implementation of WebBackForwardListClient. 3948 * {@hide} 3949 */ 3950 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3951 mCallbackProxy.setWebBackForwardListClient(client); 3952 } 3953 3954 /** 3955 * Gets the WebBackForwardListClient. 3956 * {@hide} 3957 */ 3958 public WebBackForwardListClient getWebBackForwardListClient() { 3959 return mCallbackProxy.getWebBackForwardListClient(); 3960 } 3961 3962 /** 3963 * Set the Picture listener. This is an interface used to receive 3964 * notifications of a new Picture. 3965 * @param listener An implementation of WebView.PictureListener. 3966 * @deprecated This method is now obsolete. 3967 */ 3968 @Deprecated 3969 public void setPictureListener(PictureListener listener) { 3970 checkThread(); 3971 mPictureListener = listener; 3972 } 3973 3974 /** 3975 * {@hide} 3976 */ 3977 /* FIXME: Debug only! Remove for SDK! */ 3978 public void externalRepresentation(Message callback) { 3979 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3980 } 3981 3982 /** 3983 * {@hide} 3984 */ 3985 /* FIXME: Debug only! Remove for SDK! */ 3986 public void documentAsText(Message callback) { 3987 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3988 } 3989 3990 /** 3991 * Use this function to bind an object to JavaScript so that the 3992 * methods can be accessed from JavaScript. 3993 * <p><strong>IMPORTANT:</strong> 3994 * <ul> 3995 * <li> Using addJavascriptInterface() allows JavaScript to control your 3996 * application. This can be a very useful feature or a dangerous security 3997 * issue. When the HTML in the WebView is untrustworthy (for example, part 3998 * or all of the HTML is provided by some person or process), then an 3999 * attacker could inject HTML that will execute your code and possibly any 4000 * code of the attacker's choosing.<br> 4001 * Do not use addJavascriptInterface() unless all of the HTML in this 4002 * WebView was written by you.</li> 4003 * <li> The Java object that is bound runs in another thread and not in 4004 * the thread that it was constructed in.</li> 4005 * </ul></p> 4006 * @param obj The class instance to bind to JavaScript, null instances are 4007 * ignored. 4008 * @param interfaceName The name to used to expose the instance in 4009 * JavaScript. 4010 */ 4011 public void addJavascriptInterface(Object obj, String interfaceName) { 4012 checkThread(); 4013 if (obj == null) { 4014 return; 4015 } 4016 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4017 arg.mObject = obj; 4018 arg.mInterfaceName = interfaceName; 4019 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4020 } 4021 4022 /** 4023 * Removes a previously added JavaScript interface with the given name. 4024 * @param interfaceName The name of the interface to remove. 4025 */ 4026 public void removeJavascriptInterface(String interfaceName) { 4027 checkThread(); 4028 if (mWebViewCore != null) { 4029 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4030 arg.mInterfaceName = interfaceName; 4031 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4032 } 4033 } 4034 4035 /** 4036 * Return the WebSettings object used to control the settings for this 4037 * WebView. 4038 * @return A WebSettings object that can be used to control this WebView's 4039 * settings. 4040 */ 4041 public WebSettings getSettings() { 4042 checkThread(); 4043 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4044 } 4045 4046 /** 4047 * Return the list of currently loaded plugins. 4048 * @return The list of currently loaded plugins. 4049 * 4050 * @hide 4051 * @deprecated This was used for Gears, which has been deprecated. 4052 */ 4053 @Deprecated 4054 public static synchronized PluginList getPluginList() { 4055 checkThread(); 4056 return new PluginList(); 4057 } 4058 4059 /** 4060 * @hide 4061 * @deprecated This was used for Gears, which has been deprecated. 4062 */ 4063 @Deprecated 4064 public void refreshPlugins(boolean reloadOpenPages) { 4065 checkThread(); 4066 } 4067 4068 //------------------------------------------------------------------------- 4069 // Override View methods 4070 //------------------------------------------------------------------------- 4071 4072 @Override 4073 protected void finalize() throws Throwable { 4074 try { 4075 if (mNativeClass != 0) { 4076 mPrivateHandler.post(new Runnable() { 4077 @Override 4078 public void run() { 4079 destroy(); 4080 } 4081 }); 4082 } 4083 } finally { 4084 super.finalize(); 4085 } 4086 } 4087 4088 @Override 4089 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4090 if (child == mTitleBar) { 4091 // When drawing the title bar, move it horizontally to always show 4092 // at the top of the WebView. 4093 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4094 int newTop = 0; 4095 if (mTitleGravity == Gravity.NO_GRAVITY) { 4096 newTop = Math.min(0, mScrollY); 4097 } else if (mTitleGravity == Gravity.TOP) { 4098 newTop = mScrollY; 4099 } 4100 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4101 mTitleBar.setTop(newTop); 4102 } 4103 return super.drawChild(canvas, child, drawingTime); 4104 } 4105 4106 private void drawContent(Canvas canvas, boolean drawRings) { 4107 // Update the buttons in the picture, so when we draw the picture 4108 // to the screen, they are in the correct state. 4109 // Tell the native side if user is a) touching the screen, 4110 // b) pressing the trackball down, or c) pressing the enter key 4111 // If the cursor is on a button, we need to draw it in the pressed 4112 // state. 4113 // If mNativeClass is 0, we should not reach here, so we do not 4114 // need to check it again. 4115 boolean pressed = (mTouchMode == TOUCH_SHORTPRESS_START_MODE 4116 || mTouchMode == TOUCH_INIT_MODE 4117 || mTouchMode == TOUCH_SHORTPRESS_MODE); 4118 recordButtons(canvas, 4119 hasFocus() && hasWindowFocus(), (pressed && !USE_WEBKIT_RINGS) 4120 || mTrackballDown || mGotCenterDown, false); 4121 drawCoreAndCursorRing(canvas, mBackgroundColor, 4122 mDrawCursorRing && drawRings); 4123 } 4124 4125 /** 4126 * Draw the background when beyond bounds 4127 * @param canvas Canvas to draw into 4128 */ 4129 private void drawOverScrollBackground(Canvas canvas) { 4130 if (mOverScrollBackground == null) { 4131 mOverScrollBackground = new Paint(); 4132 Bitmap bm = BitmapFactory.decodeResource( 4133 mContext.getResources(), 4134 com.android.internal.R.drawable.status_bar_background); 4135 mOverScrollBackground.setShader(new BitmapShader(bm, 4136 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4137 mOverScrollBorder = new Paint(); 4138 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4139 mOverScrollBorder.setStrokeWidth(0); 4140 mOverScrollBorder.setColor(0xffbbbbbb); 4141 } 4142 4143 int top = 0; 4144 int right = computeRealHorizontalScrollRange(); 4145 int bottom = top + computeRealVerticalScrollRange(); 4146 // first draw the background and anchor to the top of the view 4147 canvas.save(); 4148 canvas.translate(mScrollX, mScrollY); 4149 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4150 - mScrollY, Region.Op.DIFFERENCE); 4151 canvas.drawPaint(mOverScrollBackground); 4152 canvas.restore(); 4153 // then draw the border 4154 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4155 // next clip the region for the content 4156 canvas.clipRect(0, top, right, bottom); 4157 } 4158 4159 @Override 4160 protected void onDraw(Canvas canvas) { 4161 // if mNativeClass is 0, the WebView is either destroyed or not 4162 // initialized. In either case, just draw the background color and return 4163 if (mNativeClass == 0) { 4164 canvas.drawColor(mBackgroundColor); 4165 return; 4166 } 4167 4168 // if both mContentWidth and mContentHeight are 0, it means there is no 4169 // valid Picture passed to WebView yet. This can happen when WebView 4170 // just starts. Draw the background and return. 4171 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4172 canvas.drawColor(mBackgroundColor); 4173 return; 4174 } 4175 4176 if (canvas.isHardwareAccelerated()) { 4177 mZoomManager.setHardwareAccelerated(); 4178 } 4179 4180 int saveCount = canvas.save(); 4181 if (mInOverScrollMode && !getSettings() 4182 .getUseWebViewBackgroundForOverscrollBackground()) { 4183 drawOverScrollBackground(canvas); 4184 } 4185 if (mTitleBar != null) { 4186 canvas.translate(0, getTitleHeight()); 4187 } 4188 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4189 && (mTouchMode == TOUCH_INIT_MODE 4190 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4191 || mTouchMode == TOUCH_SHORTPRESS_MODE 4192 || mTouchMode == TOUCH_DONE_MODE); 4193 boolean drawNativeRings = !drawJavaRings; 4194 if (USE_WEBKIT_RINGS) { 4195 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4196 } 4197 drawContent(canvas, drawNativeRings); 4198 canvas.restoreToCount(saveCount); 4199 4200 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4201 invalidate(); 4202 } 4203 mWebViewCore.signalRepaintDone(); 4204 4205 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4206 invalidate(); 4207 } 4208 4209 // paint the highlight in the end 4210 if (drawJavaRings) { 4211 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4212 if (delay < ViewConfiguration.getTapTimeout()) { 4213 Rect r = mTouchHighlightRegion.getBounds(); 4214 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4215 } else { 4216 if (mTouchHightlightPaint == null) { 4217 mTouchHightlightPaint = new Paint(); 4218 mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR); 4219 } 4220 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4221 Rect r = new Rect(); 4222 while (iter.next(r)) { 4223 canvas.drawRect(r, mTouchHightlightPaint); 4224 } 4225 } 4226 } 4227 if (DEBUG_TOUCH_HIGHLIGHT) { 4228 if (getSettings().getNavDump()) { 4229 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4230 if (mTouchCrossHairColor == null) { 4231 mTouchCrossHairColor = new Paint(); 4232 mTouchCrossHairColor.setColor(Color.RED); 4233 } 4234 canvas.drawLine(mTouchHighlightX - mNavSlop, 4235 mTouchHighlightY - mNavSlop, mTouchHighlightX 4236 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4237 + 1, mTouchCrossHairColor); 4238 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4239 mTouchHighlightY - mNavSlop, mTouchHighlightX 4240 - mNavSlop, 4241 mTouchHighlightY + mNavSlop + 1, 4242 mTouchCrossHairColor); 4243 } 4244 } 4245 } 4246 } 4247 4248 private void removeTouchHighlight() { 4249 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4250 mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS); 4251 setTouchHighlightRects(null); 4252 } 4253 4254 @Override 4255 public void setLayoutParams(ViewGroup.LayoutParams params) { 4256 if (params.height == LayoutParams.WRAP_CONTENT) { 4257 mWrapContent = true; 4258 } 4259 super.setLayoutParams(params); 4260 } 4261 4262 @Override 4263 public boolean performLongClick() { 4264 // performLongClick() is the result of a delayed message. If we switch 4265 // to windows overview, the WebView will be temporarily removed from the 4266 // view system. In that case, do nothing. 4267 if (getParent() == null) return false; 4268 4269 // A multi-finger gesture can look like a long press; make sure we don't take 4270 // long press actions if we're scaling. 4271 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4272 if (detector != null && detector.isInProgress()) { 4273 return false; 4274 } 4275 4276 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4277 // Send the click so that the textfield is in focus 4278 centerKeyPressOnTextField(); 4279 rebuildWebTextView(); 4280 } else { 4281 clearTextEntry(); 4282 } 4283 if (inEditingMode()) { 4284 // Since we just called rebuildWebTextView, the layout is not set 4285 // properly. Update it so it can correctly find the word to select. 4286 mWebTextView.ensureLayout(); 4287 // Provide a touch down event to WebTextView, which will allow it 4288 // to store the location to use in performLongClick. 4289 AbsoluteLayout.LayoutParams params 4290 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4291 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4292 mLastTouchTime, MotionEvent.ACTION_DOWN, 4293 mLastTouchX - params.x + mScrollX, 4294 mLastTouchY - params.y + mScrollY, 0); 4295 mWebTextView.dispatchTouchEvent(fake); 4296 return mWebTextView.performLongClick(); 4297 } 4298 if (mSelectingText) return false; // long click does nothing on selection 4299 /* if long click brings up a context menu, the super function 4300 * returns true and we're done. Otherwise, nothing happened when 4301 * the user clicked. */ 4302 if (super.performLongClick()) { 4303 return true; 4304 } 4305 /* In the case where the application hasn't already handled the long 4306 * click action, look for a word under the click. If one is found, 4307 * animate the text selection into view. 4308 * FIXME: no animation code yet */ 4309 final boolean isSelecting = selectText(); 4310 if (isSelecting) { 4311 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4312 } 4313 return isSelecting; 4314 } 4315 4316 /** 4317 * Select the word at the last click point. 4318 * 4319 * @hide pending API council approval 4320 */ 4321 public boolean selectText() { 4322 int x = viewToContentX(mLastTouchX + mScrollX); 4323 int y = viewToContentY(mLastTouchY + mScrollY); 4324 return selectText(x, y); 4325 } 4326 4327 /** 4328 * Select the word at the indicated content coordinates. 4329 */ 4330 boolean selectText(int x, int y) { 4331 if (!setUpSelect(true, x, y)) { 4332 return false; 4333 } 4334 nativeSetExtendSelection(); 4335 mDrawSelectionPointer = false; 4336 mTouchMode = TOUCH_DRAG_MODE; 4337 return true; 4338 } 4339 4340 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4341 4342 @Override 4343 protected void onConfigurationChanged(Configuration newConfig) { 4344 if (mSelectingText && mOrientation != newConfig.orientation) { 4345 selectionDone(); 4346 } 4347 mOrientation = newConfig.orientation; 4348 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4349 } 4350 4351 /** 4352 * Keep track of the Callback so we can end its ActionMode or remove its 4353 * titlebar. 4354 */ 4355 private SelectActionModeCallback mSelectCallback; 4356 4357 // These values are possible options for didUpdateWebTextViewDimensions. 4358 private static final int FULLY_ON_SCREEN = 0; 4359 private static final int INTERSECTS_SCREEN = 1; 4360 private static final int ANYWHERE = 2; 4361 4362 /** 4363 * Check to see if the focused textfield/textarea is still on screen. If it 4364 * is, update the the dimensions and location of WebTextView. Otherwise, 4365 * remove the WebTextView. Should be called when the zoom level changes. 4366 * @param intersection How to determine whether the textfield/textarea is 4367 * still on screen. 4368 * @return boolean True if the textfield/textarea is still on screen and the 4369 * dimensions/location of WebTextView have been updated. 4370 */ 4371 private boolean didUpdateWebTextViewDimensions(int intersection) { 4372 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4373 Rect vBox = contentToViewRect(contentBounds); 4374 Rect visibleRect = new Rect(); 4375 calcOurVisibleRect(visibleRect); 4376 // If the textfield is on screen, place the WebTextView in 4377 // its new place, accounting for our new scroll/zoom values, 4378 // and adjust its textsize. 4379 boolean onScreen; 4380 switch (intersection) { 4381 case FULLY_ON_SCREEN: 4382 onScreen = visibleRect.contains(vBox); 4383 break; 4384 case INTERSECTS_SCREEN: 4385 onScreen = Rect.intersects(visibleRect, vBox); 4386 break; 4387 case ANYWHERE: 4388 onScreen = true; 4389 break; 4390 default: 4391 throw new AssertionError( 4392 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4393 } 4394 if (onScreen) { 4395 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4396 vBox.height()); 4397 mWebTextView.updateTextSize(); 4398 updateWebTextViewPadding(); 4399 return true; 4400 } else { 4401 // The textfield is now off screen. The user probably 4402 // was not zooming to see the textfield better. Remove 4403 // the WebTextView. If the user types a key, and the 4404 // textfield is still in focus, we will reconstruct 4405 // the WebTextView and scroll it back on screen. 4406 mWebTextView.remove(); 4407 return false; 4408 } 4409 } 4410 4411 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4412 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4413 if (mNativeClass == 0) 4414 return; 4415 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4416 isPictureAfterFirstLayout, registerPageSwapCallback); 4417 if (mHTML5VideoViewProxy != null) { 4418 mHTML5VideoViewProxy.setBaseLayer(layer); 4419 } 4420 } 4421 4422 int getBaseLayer() { 4423 if (mNativeClass == 0) { 4424 return 0; 4425 } 4426 return nativeGetBaseLayer(); 4427 } 4428 4429 private void onZoomAnimationStart() { 4430 // If it is in password mode, turn it off so it does not draw misplaced. 4431 if (inEditingMode()) { 4432 mWebTextView.setVisibility(INVISIBLE); 4433 } 4434 } 4435 4436 private void onZoomAnimationEnd() { 4437 // adjust the edit text view if needed 4438 if (inEditingMode() 4439 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4440 // If it is a password field, start drawing the WebTextView once 4441 // again. 4442 mWebTextView.setVisibility(VISIBLE); 4443 } 4444 } 4445 4446 void onFixedLengthZoomAnimationStart() { 4447 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4448 onZoomAnimationStart(); 4449 } 4450 4451 void onFixedLengthZoomAnimationEnd() { 4452 if (!mBlockWebkitViewMessages && !mSelectingText) { 4453 WebViewCore.resumeUpdatePicture(mWebViewCore); 4454 } 4455 onZoomAnimationEnd(); 4456 } 4457 4458 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4459 Paint.DITHER_FLAG | 4460 Paint.SUBPIXEL_TEXT_FLAG; 4461 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4462 Paint.DITHER_FLAG; 4463 4464 private final DrawFilter mZoomFilter = 4465 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4466 // If we need to trade better quality for speed, set mScrollFilter to null 4467 private final DrawFilter mScrollFilter = 4468 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4469 4470 private void drawCoreAndCursorRing(Canvas canvas, int color, 4471 boolean drawCursorRing) { 4472 if (mDrawHistory) { 4473 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4474 canvas.drawPicture(mHistoryPicture); 4475 return; 4476 } 4477 if (mNativeClass == 0) return; 4478 4479 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4480 boolean animateScroll = ((!mScroller.isFinished() 4481 || mVelocityTracker != null) 4482 && (mTouchMode != TOUCH_DRAG_MODE || 4483 mHeldMotionless != MOTIONLESS_TRUE)) 4484 || mDeferTouchMode == TOUCH_DRAG_MODE; 4485 if (mTouchMode == TOUCH_DRAG_MODE) { 4486 if (mHeldMotionless == MOTIONLESS_PENDING) { 4487 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4488 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4489 mHeldMotionless = MOTIONLESS_FALSE; 4490 } 4491 if (mHeldMotionless == MOTIONLESS_FALSE) { 4492 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4493 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4494 mHeldMotionless = MOTIONLESS_PENDING; 4495 } 4496 } 4497 int saveCount = canvas.save(); 4498 if (animateZoom) { 4499 mZoomManager.animateZoom(canvas); 4500 } else if (!canvas.isHardwareAccelerated()) { 4501 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4502 } 4503 4504 boolean UIAnimationsRunning = false; 4505 // Currently for each draw we compute the animation values; 4506 // We may in the future decide to do that independently. 4507 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4508 UIAnimationsRunning = true; 4509 // If we have unfinished (or unstarted) animations, 4510 // we ask for a repaint. We only need to do this in software 4511 // rendering (with hardware rendering we already have a different 4512 // method of requesting a repaint) 4513 if (!canvas.isHardwareAccelerated()) 4514 invalidate(); 4515 } 4516 4517 // decide which adornments to draw 4518 int extras = DRAW_EXTRAS_NONE; 4519 if (mFindIsUp) { 4520 extras = DRAW_EXTRAS_FIND; 4521 } else if (mSelectingText && !USE_JAVA_TEXT_SELECTION) { 4522 extras = DRAW_EXTRAS_SELECTION; 4523 nativeSetSelectionPointer(mDrawSelectionPointer, 4524 mZoomManager.getInvScale(), 4525 mSelectX, mSelectY - getTitleHeight()); 4526 } else if (drawCursorRing) { 4527 extras = DRAW_EXTRAS_CURSOR_RING; 4528 } 4529 if (DebugFlags.WEB_VIEW) { 4530 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4531 + " mSelectingText=" + mSelectingText 4532 + " nativePageShouldHandleShiftAndArrows()=" 4533 + nativePageShouldHandleShiftAndArrows() 4534 + " animateZoom=" + animateZoom 4535 + " extras=" + extras); 4536 } 4537 4538 if (canvas.isHardwareAccelerated()) { 4539 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4540 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4541 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4542 4543 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4544 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4545 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4546 } 4547 4548 } else { 4549 DrawFilter df = null; 4550 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4551 df = mZoomFilter; 4552 } else if (animateScroll) { 4553 df = mScrollFilter; 4554 } 4555 canvas.setDrawFilter(df); 4556 // XXX: Revisit splitting content. Right now it causes a 4557 // synchronization problem with layers. 4558 int content = nativeDraw(canvas, color, extras, false); 4559 canvas.setDrawFilter(null); 4560 if (!mBlockWebkitViewMessages && content != 0) { 4561 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4562 } 4563 } 4564 4565 canvas.restoreToCount(saveCount); 4566 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4567 drawTextSelectionHandles(canvas); 4568 } 4569 4570 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4571 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4572 mTouchMode = TOUCH_SHORTPRESS_MODE; 4573 } 4574 } 4575 if (mFocusSizeChanged) { 4576 mFocusSizeChanged = false; 4577 // If we are zooming, this will get handled above, when the zoom 4578 // finishes. We also do not need to do this unless the WebTextView 4579 // is showing. With hardware acceleration, the pageSwapCallback() 4580 // updates the WebTextView position in sync with page swapping 4581 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4582 didUpdateWebTextViewDimensions(ANYWHERE); 4583 } 4584 } 4585 } 4586 4587 private void drawTextSelectionHandles(Canvas canvas) { 4588 if (mTextSelectionPaint == null) { 4589 mTextSelectionPaint = new Paint(); 4590 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4591 } 4592 mTextSelectionRegion.setEmpty(); 4593 nativeGetTextSelectionRegion(mTextSelectionRegion); 4594 Rect r = new Rect(); 4595 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4596 int start_x = -1; 4597 int start_y = -1; 4598 int end_x = -1; 4599 int end_y = -1; 4600 while (iter.next(r)) { 4601 r = new Rect( 4602 contentToViewDimension(r.left), 4603 contentToViewDimension(r.top), 4604 contentToViewDimension(r.right), 4605 contentToViewDimension(r.bottom)); 4606 // Regions are in order. First one is where selection starts, 4607 // last one is where it ends 4608 if (start_x < 0 || start_y < 0) { 4609 start_x = r.left; 4610 start_y = r.bottom; 4611 } 4612 end_x = r.right; 4613 end_y = r.bottom; 4614 canvas.drawRect(r, mTextSelectionPaint); 4615 } 4616 if (mSelectHandleLeft == null) { 4617 mSelectHandleLeft = mContext.getResources().getDrawable( 4618 com.android.internal.R.drawable.text_select_handle_left); 4619 } 4620 // Magic formula copied from TextView 4621 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4622 mSelectHandleLeft.setBounds(start_x, start_y, 4623 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4624 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4625 if (mSelectHandleRight == null) { 4626 mSelectHandleRight = mContext.getResources().getDrawable( 4627 com.android.internal.R.drawable.text_select_handle_right); 4628 } 4629 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4630 mSelectHandleRight.setBounds(end_x, end_y, 4631 end_x + mSelectHandleRight.getIntrinsicWidth(), 4632 end_y + mSelectHandleRight.getIntrinsicHeight()); 4633 mSelectHandleLeft.draw(canvas); 4634 mSelectHandleRight.draw(canvas); 4635 } 4636 4637 // draw history 4638 private boolean mDrawHistory = false; 4639 private Picture mHistoryPicture = null; 4640 private int mHistoryWidth = 0; 4641 private int mHistoryHeight = 0; 4642 4643 // Only check the flag, can be called from WebCore thread 4644 boolean drawHistory() { 4645 return mDrawHistory; 4646 } 4647 4648 int getHistoryPictureWidth() { 4649 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4650 } 4651 4652 // Should only be called in UI thread 4653 void switchOutDrawHistory() { 4654 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4655 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4656 mDrawHistory = false; 4657 mHistoryPicture = null; 4658 invalidate(); 4659 int oldScrollX = mScrollX; 4660 int oldScrollY = mScrollY; 4661 mScrollX = pinLocX(mScrollX); 4662 mScrollY = pinLocY(mScrollY); 4663 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4664 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4665 } else { 4666 sendOurVisibleRect(); 4667 } 4668 } 4669 } 4670 4671 WebViewCore.CursorData cursorData() { 4672 WebViewCore.CursorData result = cursorDataNoPosition(); 4673 Point position = nativeCursorPosition(); 4674 result.mX = position.x; 4675 result.mY = position.y; 4676 return result; 4677 } 4678 4679 WebViewCore.CursorData cursorDataNoPosition() { 4680 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4681 result.mMoveGeneration = nativeMoveGeneration(); 4682 result.mFrame = nativeCursorFramePointer(); 4683 return result; 4684 } 4685 4686 /** 4687 * Delete text from start to end in the focused textfield. If there is no 4688 * focus, or if start == end, silently fail. If start and end are out of 4689 * order, swap them. 4690 * @param start Beginning of selection to delete. 4691 * @param end End of selection to delete. 4692 */ 4693 /* package */ void deleteSelection(int start, int end) { 4694 mTextGeneration++; 4695 WebViewCore.TextSelectionData data 4696 = new WebViewCore.TextSelectionData(start, end); 4697 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4698 data); 4699 } 4700 4701 /** 4702 * Set the selection to (start, end) in the focused textfield. If start and 4703 * end are out of order, swap them. 4704 * @param start Beginning of selection. 4705 * @param end End of selection. 4706 */ 4707 /* package */ void setSelection(int start, int end) { 4708 if (mWebViewCore != null) { 4709 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4710 } 4711 } 4712 4713 @Override 4714 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4715 InputConnection connection = super.onCreateInputConnection(outAttrs); 4716 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4717 return connection; 4718 } 4719 4720 /** 4721 * Called in response to a message from webkit telling us that the soft 4722 * keyboard should be launched. 4723 */ 4724 private void displaySoftKeyboard(boolean isTextView) { 4725 InputMethodManager imm = (InputMethodManager) 4726 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4727 4728 // bring it back to the default level scale so that user can enter text 4729 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4730 if (zoom) { 4731 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4732 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4733 } 4734 if (isTextView) { 4735 rebuildWebTextView(); 4736 if (inEditingMode()) { 4737 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4738 if (zoom) { 4739 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4740 } 4741 return; 4742 } 4743 } 4744 // Used by plugins and contentEditable. 4745 // Also used if the navigation cache is out of date, and 4746 // does not recognize that a textfield is in focus. In that 4747 // case, use WebView as the targeted view. 4748 // see http://b/issue?id=2457459 4749 imm.showSoftInput(this, 0); 4750 } 4751 4752 // Called by WebKit to instruct the UI to hide the keyboard 4753 private void hideSoftKeyboard() { 4754 InputMethodManager imm = InputMethodManager.peekInstance(); 4755 if (imm != null && (imm.isActive(this) 4756 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4757 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4758 } 4759 } 4760 4761 /* 4762 * This method checks the current focus and cursor and potentially rebuilds 4763 * mWebTextView to have the appropriate properties, such as password, 4764 * multiline, and what text it contains. It also removes it if necessary. 4765 */ 4766 /* package */ void rebuildWebTextView() { 4767 // If the WebView does not have focus, do nothing until it gains focus. 4768 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4769 return; 4770 } 4771 boolean alreadyThere = inEditingMode(); 4772 // inEditingMode can only return true if mWebTextView is non-null, 4773 // so we can safely call remove() if (alreadyThere) 4774 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4775 if (alreadyThere) { 4776 mWebTextView.remove(); 4777 } 4778 return; 4779 } 4780 // At this point, we know we have found an input field, so go ahead 4781 // and create the WebTextView if necessary. 4782 if (mWebTextView == null) { 4783 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4784 // Initialize our generation number. 4785 mTextGeneration = 0; 4786 } 4787 mWebTextView.updateTextSize(); 4788 Rect visibleRect = new Rect(); 4789 calcOurContentVisibleRect(visibleRect); 4790 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4791 // should be in content coordinates. 4792 Rect bounds = nativeFocusCandidateNodeBounds(); 4793 Rect vBox = contentToViewRect(bounds); 4794 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4795 if (!Rect.intersects(bounds, visibleRect)) { 4796 revealSelection(); 4797 } 4798 String text = nativeFocusCandidateText(); 4799 int nodePointer = nativeFocusCandidatePointer(); 4800 // This needs to be called before setType, which may call 4801 // requestFormData, and it needs to have the correct nodePointer. 4802 mWebTextView.setNodePointer(nodePointer); 4803 mWebTextView.setType(nativeFocusCandidateType()); 4804 // Gravity needs to be set after setType 4805 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 4806 updateWebTextViewPadding(); 4807 if (null == text) { 4808 if (DebugFlags.WEB_VIEW) { 4809 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4810 } 4811 text = ""; 4812 } 4813 mWebTextView.setTextAndKeepSelection(text); 4814 InputMethodManager imm = InputMethodManager.peekInstance(); 4815 if (imm != null && imm.isActive(mWebTextView)) { 4816 imm.restartInput(mWebTextView); 4817 } 4818 if (isFocused()) { 4819 mWebTextView.requestFocus(); 4820 } 4821 } 4822 4823 /** 4824 * Update the padding of mWebTextView based on the native textfield/textarea 4825 */ 4826 void updateWebTextViewPadding() { 4827 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4828 if (paddingRect != null) { 4829 // Use contentToViewDimension since these are the dimensions of 4830 // the padding. 4831 mWebTextView.setPadding( 4832 contentToViewDimension(paddingRect.left), 4833 contentToViewDimension(paddingRect.top), 4834 contentToViewDimension(paddingRect.right), 4835 contentToViewDimension(paddingRect.bottom)); 4836 } 4837 } 4838 4839 /** 4840 * Tell webkit to put the cursor on screen. 4841 */ 4842 /* package */ void revealSelection() { 4843 if (mWebViewCore != null) { 4844 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4845 } 4846 } 4847 4848 /** 4849 * Called by WebTextView to find saved form data associated with the 4850 * textfield 4851 * @param name Name of the textfield. 4852 * @param nodePointer Pointer to the node of the textfield, so it can be 4853 * compared to the currently focused textfield when the data is 4854 * retrieved. 4855 * @param autoFillable true if WebKit has determined this field is part of 4856 * a form that can be auto filled. 4857 * @param autoComplete true if the attribute "autocomplete" is set to true 4858 * on the textfield. 4859 */ 4860 /* package */ void requestFormData(String name, int nodePointer, 4861 boolean autoFillable, boolean autoComplete) { 4862 if (mWebViewCore.getSettings().getSaveFormData()) { 4863 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4864 update.arg1 = nodePointer; 4865 RequestFormData updater = new RequestFormData(name, getUrl(), 4866 update, autoFillable, autoComplete); 4867 Thread t = new Thread(updater); 4868 t.start(); 4869 } 4870 } 4871 4872 /** 4873 * Pass a message to find out the <label> associated with the <input> 4874 * identified by nodePointer 4875 * @param framePointer Pointer to the frame containing the <input> node 4876 * @param nodePointer Pointer to the node for which a <label> is desired. 4877 */ 4878 /* package */ void requestLabel(int framePointer, int nodePointer) { 4879 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4880 nodePointer); 4881 } 4882 4883 /* 4884 * This class requests an Adapter for the WebTextView which shows past 4885 * entries stored in the database. It is a Runnable so that it can be done 4886 * in its own thread, without slowing down the UI. 4887 */ 4888 private class RequestFormData implements Runnable { 4889 private String mName; 4890 private String mUrl; 4891 private Message mUpdateMessage; 4892 private boolean mAutoFillable; 4893 private boolean mAutoComplete; 4894 private WebSettings mWebSettings; 4895 4896 public RequestFormData(String name, String url, Message msg, 4897 boolean autoFillable, boolean autoComplete) { 4898 mName = name; 4899 mUrl = WebTextView.urlForAutoCompleteData(url); 4900 mUpdateMessage = msg; 4901 mAutoFillable = autoFillable; 4902 mAutoComplete = autoComplete; 4903 mWebSettings = getSettings(); 4904 } 4905 4906 public void run() { 4907 ArrayList<String> pastEntries = new ArrayList<String>(); 4908 4909 if (mAutoFillable) { 4910 // Note that code inside the adapter click handler in WebTextView depends 4911 // on the AutoFill item being at the top of the drop down list. If you change 4912 // the order, make sure to do it there too! 4913 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 4914 pastEntries.add(getResources().getText( 4915 com.android.internal.R.string.autofill_this_form).toString() + 4916 " " + 4917 mAutoFillData.getPreviewString()); 4918 mWebTextView.setAutoFillProfileIsSet(true); 4919 } else { 4920 // There is no autofill profile set up yet, so add an option that 4921 // will invite the user to set their profile up. 4922 pastEntries.add(getResources().getText( 4923 com.android.internal.R.string.setup_autofill).toString()); 4924 mWebTextView.setAutoFillProfileIsSet(false); 4925 } 4926 } 4927 4928 if (mAutoComplete) { 4929 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4930 } 4931 4932 if (pastEntries.size() > 0) { 4933 AutoCompleteAdapter adapter = new 4934 AutoCompleteAdapter(mContext, pastEntries); 4935 mUpdateMessage.obj = adapter; 4936 mUpdateMessage.sendToTarget(); 4937 } 4938 } 4939 } 4940 4941 /** 4942 * Dump the display tree to "/sdcard/displayTree.txt" 4943 * 4944 * @hide debug only 4945 */ 4946 public void dumpDisplayTree() { 4947 nativeDumpDisplayTree(getUrl()); 4948 } 4949 4950 /** 4951 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4952 * "/sdcard/domTree.txt" 4953 * 4954 * @hide debug only 4955 */ 4956 public void dumpDomTree(boolean toFile) { 4957 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4958 } 4959 4960 /** 4961 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4962 * to "/sdcard/renderTree.txt" 4963 * 4964 * @hide debug only 4965 */ 4966 public void dumpRenderTree(boolean toFile) { 4967 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4968 } 4969 4970 /** 4971 * Called by DRT on UI thread, need to proxy to WebCore thread. 4972 * 4973 * @hide debug only 4974 */ 4975 public void useMockDeviceOrientation() { 4976 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4977 } 4978 4979 /** 4980 * Called by DRT on WebCore thread. 4981 * 4982 * @hide debug only 4983 */ 4984 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4985 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4986 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4987 canProvideGamma, gamma); 4988 } 4989 4990 /** 4991 * Dump the V8 counters to standard output. 4992 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4993 * true. Otherwise, this will do nothing. 4994 * 4995 * @hide debug only 4996 */ 4997 public void dumpV8Counters() { 4998 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4999 } 5000 5001 // This is used to determine long press with the center key. Does not 5002 // affect long press with the trackball/touch. 5003 private boolean mGotCenterDown = false; 5004 5005 @Override 5006 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5007 if (mBlockWebkitViewMessages) { 5008 return false; 5009 } 5010 // send complex characters to webkit for use by JS and plugins 5011 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5012 // pass the key to DOM 5013 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5014 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5015 // return true as DOM handles the key 5016 return true; 5017 } 5018 return false; 5019 } 5020 5021 private boolean isEnterActionKey(int keyCode) { 5022 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5023 || keyCode == KeyEvent.KEYCODE_ENTER 5024 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5025 } 5026 5027 @Override 5028 public boolean onKeyDown(int keyCode, KeyEvent event) { 5029 if (DebugFlags.WEB_VIEW) { 5030 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5031 + "keyCode=" + keyCode 5032 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5033 } 5034 if (mBlockWebkitViewMessages) { 5035 return false; 5036 } 5037 5038 // don't implement accelerator keys here; defer to host application 5039 if (event.isCtrlPressed()) { 5040 return false; 5041 } 5042 5043 if (mNativeClass == 0) { 5044 return false; 5045 } 5046 5047 // do this hack up front, so it always works, regardless of touch-mode 5048 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5049 mAutoRedraw = !mAutoRedraw; 5050 if (mAutoRedraw) { 5051 invalidate(); 5052 } 5053 return true; 5054 } 5055 5056 // Bubble up the key event if 5057 // 1. it is a system key; or 5058 // 2. the host application wants to handle it; 5059 if (event.isSystem() 5060 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5061 return false; 5062 } 5063 5064 // accessibility support 5065 if (accessibilityScriptInjected()) { 5066 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5067 // if an accessibility script is injected we delegate to it the key handling. 5068 // this script is a screen reader which is a fully fledged solution for blind 5069 // users to navigate in and interact with web pages. 5070 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5071 return true; 5072 } else { 5073 // Clean up if accessibility was disabled after loading the current URL. 5074 mAccessibilityScriptInjected = false; 5075 } 5076 } else if (mAccessibilityInjector != null) { 5077 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5078 if (mAccessibilityInjector.onKeyEvent(event)) { 5079 // if an accessibility injector is present (no JavaScript enabled or the site 5080 // opts out injecting our JavaScript screen reader) we let it decide whether 5081 // to act on and consume the event. 5082 return true; 5083 } 5084 } else { 5085 // Clean up if accessibility was disabled after loading the current URL. 5086 mAccessibilityInjector = null; 5087 } 5088 } 5089 5090 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5091 if (event.hasNoModifiers()) { 5092 pageUp(false); 5093 return true; 5094 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5095 pageUp(true); 5096 return true; 5097 } 5098 } 5099 5100 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5101 if (event.hasNoModifiers()) { 5102 pageDown(false); 5103 return true; 5104 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5105 pageDown(true); 5106 return true; 5107 } 5108 } 5109 5110 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5111 pageUp(true); 5112 return true; 5113 } 5114 5115 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5116 pageDown(true); 5117 return true; 5118 } 5119 5120 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5121 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5122 switchOutDrawHistory(); 5123 if (nativePageShouldHandleShiftAndArrows()) { 5124 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5125 return true; 5126 } 5127 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5128 switch (keyCode) { 5129 case KeyEvent.KEYCODE_DPAD_UP: 5130 pageUp(true); 5131 return true; 5132 case KeyEvent.KEYCODE_DPAD_DOWN: 5133 pageDown(true); 5134 return true; 5135 case KeyEvent.KEYCODE_DPAD_LEFT: 5136 nativeClearCursor(); // start next trackball movement from page edge 5137 return pinScrollTo(0, mScrollY, true, 0); 5138 case KeyEvent.KEYCODE_DPAD_RIGHT: 5139 nativeClearCursor(); // start next trackball movement from page edge 5140 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5141 } 5142 } 5143 if (mSelectingText) { 5144 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5145 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5146 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5147 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5148 int multiplier = event.getRepeatCount() + 1; 5149 moveSelection(xRate * multiplier, yRate * multiplier); 5150 return true; 5151 } 5152 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5153 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5154 return true; 5155 } 5156 // Bubble up the key event as WebView doesn't handle it 5157 return false; 5158 } 5159 5160 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5161 switchOutDrawHistory(); 5162 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5163 || nativeCursorWantsKeyEvents(); 5164 if (event.getRepeatCount() == 0) { 5165 if (mSelectingText) { 5166 return true; // discard press if copy in progress 5167 } 5168 mGotCenterDown = true; 5169 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5170 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5171 // Already checked mNativeClass, so we do not need to check it 5172 // again. 5173 recordButtons(null, hasFocus() && hasWindowFocus(), true, true); 5174 if (!wantsKeyEvents) return true; 5175 } 5176 // Bubble up the key event as WebView doesn't handle it 5177 if (!wantsKeyEvents) return false; 5178 } 5179 5180 if (getSettings().getNavDump()) { 5181 switch (keyCode) { 5182 case KeyEvent.KEYCODE_4: 5183 dumpDisplayTree(); 5184 break; 5185 case KeyEvent.KEYCODE_5: 5186 case KeyEvent.KEYCODE_6: 5187 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5188 break; 5189 case KeyEvent.KEYCODE_7: 5190 case KeyEvent.KEYCODE_8: 5191 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5192 break; 5193 case KeyEvent.KEYCODE_9: 5194 nativeInstrumentReport(); 5195 return true; 5196 } 5197 } 5198 5199 if (nativeCursorIsTextInput()) { 5200 // This message will put the node in focus, for the DOM's notion 5201 // of focus. 5202 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5203 nativeCursorNodePointer()); 5204 // This will bring up the WebTextView and put it in focus, for 5205 // our view system's notion of focus 5206 rebuildWebTextView(); 5207 // Now we need to pass the event to it 5208 if (inEditingMode()) { 5209 mWebTextView.setDefaultSelection(); 5210 return mWebTextView.dispatchKeyEvent(event); 5211 } 5212 } else if (nativeHasFocusNode()) { 5213 // In this case, the cursor is not on a text input, but the focus 5214 // might be. Check it, and if so, hand over to the WebTextView. 5215 rebuildWebTextView(); 5216 if (inEditingMode()) { 5217 mWebTextView.setDefaultSelection(); 5218 return mWebTextView.dispatchKeyEvent(event); 5219 } 5220 } 5221 5222 // TODO: should we pass all the keys to DOM or check the meta tag 5223 if (nativeCursorWantsKeyEvents() || true) { 5224 // pass the key to DOM 5225 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5226 // return true as DOM handles the key 5227 return true; 5228 } 5229 5230 // Bubble up the key event as WebView doesn't handle it 5231 return false; 5232 } 5233 5234 @Override 5235 public boolean onKeyUp(int keyCode, KeyEvent event) { 5236 if (DebugFlags.WEB_VIEW) { 5237 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5238 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5239 } 5240 if (mBlockWebkitViewMessages) { 5241 return false; 5242 } 5243 5244 if (mNativeClass == 0) { 5245 return false; 5246 } 5247 5248 // special CALL handling when cursor node's href is "tel:XXX" 5249 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5250 String text = nativeCursorText(); 5251 if (!nativeCursorIsTextInput() && text != null 5252 && text.startsWith(SCHEME_TEL)) { 5253 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5254 getContext().startActivity(intent); 5255 return true; 5256 } 5257 } 5258 5259 // Bubble up the key event if 5260 // 1. it is a system key; or 5261 // 2. the host application wants to handle it; 5262 if (event.isSystem() 5263 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5264 return false; 5265 } 5266 5267 // accessibility support 5268 if (accessibilityScriptInjected()) { 5269 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5270 // if an accessibility script is injected we delegate to it the key handling. 5271 // this script is a screen reader which is a fully fledged solution for blind 5272 // users to navigate in and interact with web pages. 5273 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5274 return true; 5275 } else { 5276 // Clean up if accessibility was disabled after loading the current URL. 5277 mAccessibilityScriptInjected = false; 5278 } 5279 } else if (mAccessibilityInjector != null) { 5280 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5281 if (mAccessibilityInjector.onKeyEvent(event)) { 5282 // if an accessibility injector is present (no JavaScript enabled or the site 5283 // opts out injecting our JavaScript screen reader) we let it decide whether to 5284 // act on and consume the event. 5285 return true; 5286 } 5287 } else { 5288 // Clean up if accessibility was disabled after loading the current URL. 5289 mAccessibilityInjector = null; 5290 } 5291 } 5292 5293 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5294 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5295 if (nativePageShouldHandleShiftAndArrows()) { 5296 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5297 return true; 5298 } 5299 // always handle the navigation keys in the UI thread 5300 // Bubble up the key event as WebView doesn't handle it 5301 return false; 5302 } 5303 5304 if (isEnterActionKey(keyCode)) { 5305 // remove the long press message first 5306 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5307 mGotCenterDown = false; 5308 5309 if (mSelectingText) { 5310 if (mExtendSelection) { 5311 copySelection(); 5312 selectionDone(); 5313 } else { 5314 mExtendSelection = true; 5315 nativeSetExtendSelection(); 5316 invalidate(); // draw the i-beam instead of the arrow 5317 } 5318 return true; // discard press if copy in progress 5319 } 5320 5321 // perform the single click 5322 Rect visibleRect = sendOurVisibleRect(); 5323 // Note that sendOurVisibleRect calls viewToContent, so the 5324 // coordinates should be in content coordinates. 5325 if (!nativeCursorIntersects(visibleRect)) { 5326 return false; 5327 } 5328 WebViewCore.CursorData data = cursorData(); 5329 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5330 playSoundEffect(SoundEffectConstants.CLICK); 5331 if (nativeCursorIsTextInput()) { 5332 rebuildWebTextView(); 5333 centerKeyPressOnTextField(); 5334 if (inEditingMode()) { 5335 mWebTextView.setDefaultSelection(); 5336 } 5337 return true; 5338 } 5339 clearTextEntry(); 5340 nativeShowCursorTimed(); 5341 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5342 return true; 5343 } 5344 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5345 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5346 nativeCursorNodePointer()); 5347 return true; 5348 } 5349 } 5350 5351 // TODO: should we pass all the keys to DOM or check the meta tag 5352 if (nativeCursorWantsKeyEvents() || true) { 5353 // pass the key to DOM 5354 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5355 // return true as DOM handles the key 5356 return true; 5357 } 5358 5359 // Bubble up the key event as WebView doesn't handle it 5360 return false; 5361 } 5362 5363 /* 5364 * Enter selecting text mode, and see if CAB should be shown. 5365 * Returns true if the WebView is now in 5366 * selecting text mode (including if it was already in that mode, and this 5367 * method did nothing). 5368 */ 5369 private boolean setUpSelect(boolean selectWord, int x, int y) { 5370 if (0 == mNativeClass) return false; // client isn't initialized 5371 if (inFullScreenMode()) return false; 5372 if (mSelectingText) return true; 5373 nativeResetSelection(); 5374 if (selectWord && !nativeWordSelection(x, y)) { 5375 selectionDone(); 5376 return false; 5377 } 5378 mSelectCallback = new SelectActionModeCallback(); 5379 mSelectCallback.setWebView(this); 5380 if (startActionMode(mSelectCallback) == null) { 5381 // There is no ActionMode, so do not allow the user to modify a 5382 // selection. 5383 selectionDone(); 5384 return false; 5385 } 5386 mExtendSelection = false; 5387 mSelectingText = mDrawSelectionPointer = true; 5388 // don't let the picture change during text selection 5389 WebViewCore.pauseUpdatePicture(mWebViewCore); 5390 if (nativeHasCursorNode()) { 5391 Rect rect = nativeCursorNodeBounds(); 5392 mSelectX = contentToViewX(rect.left); 5393 mSelectY = contentToViewY(rect.top); 5394 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5395 mSelectX = mScrollX + mLastTouchX; 5396 mSelectY = mScrollY + mLastTouchY; 5397 } else { 5398 mSelectX = mScrollX + getViewWidth() / 2; 5399 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5400 } 5401 nativeHideCursor(); 5402 mMinAutoScrollX = 0; 5403 mMaxAutoScrollX = getViewWidth(); 5404 mMinAutoScrollY = 0; 5405 mMaxAutoScrollY = getViewHeightWithTitle(); 5406 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 5407 viewToContentY(mSelectY), mScrollingLayerRect, 5408 mScrollingLayerBounds); 5409 if (mScrollingLayer != 0) { 5410 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5411 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5412 contentToViewX(mScrollingLayerBounds.left)); 5413 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5414 contentToViewX(mScrollingLayerBounds.right)); 5415 } 5416 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5417 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5418 contentToViewY(mScrollingLayerBounds.top)); 5419 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5420 contentToViewY(mScrollingLayerBounds.bottom)); 5421 } 5422 } 5423 mMinAutoScrollX += SELECT_SCROLL; 5424 mMaxAutoScrollX -= SELECT_SCROLL; 5425 mMinAutoScrollY += SELECT_SCROLL; 5426 mMaxAutoScrollY -= SELECT_SCROLL; 5427 return true; 5428 } 5429 5430 /** 5431 * Use this method to put the WebView into text selection mode. 5432 * Do not rely on this functionality; it will be deprecated in the future. 5433 * @deprecated This method is now obsolete. 5434 */ 5435 @Deprecated 5436 public void emulateShiftHeld() { 5437 checkThread(); 5438 setUpSelect(false, 0, 0); 5439 } 5440 5441 /** 5442 * Select all of the text in this WebView. 5443 * 5444 * @hide pending API council approval. 5445 */ 5446 public void selectAll() { 5447 if (0 == mNativeClass) return; // client isn't initialized 5448 if (inFullScreenMode()) return; 5449 if (!mSelectingText) { 5450 // retrieve a point somewhere within the text 5451 Point select = nativeSelectableText(); 5452 if (!selectText(select.x, select.y)) return; 5453 } 5454 nativeSelectAll(); 5455 mDrawSelectionPointer = false; 5456 mExtendSelection = true; 5457 invalidate(); 5458 } 5459 5460 /** 5461 * Called when the selection has been removed. 5462 */ 5463 void selectionDone() { 5464 if (mSelectingText) { 5465 mSelectingText = false; 5466 // finish is idempotent, so this is fine even if selectionDone was 5467 // called by mSelectCallback.onDestroyActionMode 5468 mSelectCallback.finish(); 5469 mSelectCallback = null; 5470 WebViewCore.resumePriority(); 5471 WebViewCore.resumeUpdatePicture(mWebViewCore); 5472 invalidate(); // redraw without selection 5473 mAutoScrollX = 0; 5474 mAutoScrollY = 0; 5475 mSentAutoScrollMessage = false; 5476 } 5477 } 5478 5479 /** 5480 * Copy the selection to the clipboard 5481 * 5482 * @hide pending API council approval. 5483 */ 5484 public boolean copySelection() { 5485 boolean copiedSomething = false; 5486 String selection = getSelection(); 5487 if (selection != null && selection != "") { 5488 if (DebugFlags.WEB_VIEW) { 5489 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5490 } 5491 Toast.makeText(mContext 5492 , com.android.internal.R.string.text_copied 5493 , Toast.LENGTH_SHORT).show(); 5494 copiedSomething = true; 5495 ClipboardManager cm = (ClipboardManager)getContext() 5496 .getSystemService(Context.CLIPBOARD_SERVICE); 5497 cm.setText(selection); 5498 } 5499 invalidate(); // remove selection region and pointer 5500 return copiedSomething; 5501 } 5502 5503 /** 5504 * @hide pending API Council approval. 5505 */ 5506 public SearchBox getSearchBox() { 5507 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5508 return null; 5509 } 5510 return mWebViewCore.getBrowserFrame().getSearchBox(); 5511 } 5512 5513 /** 5514 * Returns the currently highlighted text as a string. 5515 */ 5516 String getSelection() { 5517 if (mNativeClass == 0) return ""; 5518 return nativeGetSelection(); 5519 } 5520 5521 @Override 5522 protected void onAttachedToWindow() { 5523 super.onAttachedToWindow(); 5524 if (hasWindowFocus()) setActive(true); 5525 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5526 if (mGlobalLayoutListener == null) { 5527 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5528 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5529 } 5530 if (mScrollChangedListener == null) { 5531 mScrollChangedListener = new InnerScrollChangedListener(); 5532 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5533 } 5534 5535 addAccessibilityApisToJavaScript(); 5536 5537 mTouchEventQueue.reset(); 5538 } 5539 5540 @Override 5541 protected void onDetachedFromWindow() { 5542 clearHelpers(); 5543 mZoomManager.dismissZoomPicker(); 5544 if (hasWindowFocus()) setActive(false); 5545 5546 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5547 if (mGlobalLayoutListener != null) { 5548 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5549 mGlobalLayoutListener = null; 5550 } 5551 if (mScrollChangedListener != null) { 5552 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5553 mScrollChangedListener = null; 5554 } 5555 5556 removeAccessibilityApisFromJavaScript(); 5557 5558 super.onDetachedFromWindow(); 5559 } 5560 5561 @Override 5562 protected void onVisibilityChanged(View changedView, int visibility) { 5563 super.onVisibilityChanged(changedView, visibility); 5564 // The zoomManager may be null if the webview is created from XML that 5565 // specifies the view's visibility param as not visible (see http://b/2794841) 5566 if (visibility != View.VISIBLE && mZoomManager != null) { 5567 mZoomManager.dismissZoomPicker(); 5568 } 5569 } 5570 5571 /** 5572 * @deprecated WebView no longer needs to implement 5573 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5574 */ 5575 @Deprecated 5576 public void onChildViewAdded(View parent, View child) {} 5577 5578 /** 5579 * @deprecated WebView no longer needs to implement 5580 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5581 */ 5582 @Deprecated 5583 public void onChildViewRemoved(View p, View child) {} 5584 5585 /** 5586 * @deprecated WebView should not have implemented 5587 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5588 */ 5589 @Deprecated 5590 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5591 } 5592 5593 void setActive(boolean active) { 5594 if (active) { 5595 if (hasFocus()) { 5596 // If our window regained focus, and we have focus, then begin 5597 // drawing the cursor ring 5598 mDrawCursorRing = true; 5599 setFocusControllerActive(true); 5600 if (mNativeClass != 0) { 5601 recordButtons(null, true, false, true); 5602 } 5603 } else { 5604 if (!inEditingMode()) { 5605 // If our window gained focus, but we do not have it, do not 5606 // draw the cursor ring. 5607 mDrawCursorRing = false; 5608 setFocusControllerActive(false); 5609 } 5610 // We do not call recordButtons here because we assume 5611 // that when we lost focus, or window focus, it got called with 5612 // false for the first parameter 5613 } 5614 } else { 5615 if (!mZoomManager.isZoomPickerVisible()) { 5616 /* 5617 * The external zoom controls come in their own window, so our 5618 * window loses focus. Our policy is to not draw the cursor ring 5619 * if our window is not focused, but this is an exception since 5620 * the user can still navigate the web page with the zoom 5621 * controls showing. 5622 */ 5623 mDrawCursorRing = false; 5624 } 5625 mKeysPressed.clear(); 5626 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5627 mTouchMode = TOUCH_DONE_MODE; 5628 if (mNativeClass != 0) { 5629 recordButtons(null, false, false, true); 5630 } 5631 setFocusControllerActive(false); 5632 } 5633 invalidate(); 5634 } 5635 5636 // To avoid drawing the cursor ring, and remove the TextView when our window 5637 // loses focus. 5638 @Override 5639 public void onWindowFocusChanged(boolean hasWindowFocus) { 5640 setActive(hasWindowFocus); 5641 if (hasWindowFocus) { 5642 JWebCoreJavaBridge.setActiveWebView(this); 5643 if (mPictureUpdatePausedForFocusChange) { 5644 WebViewCore.resumeUpdatePicture(mWebViewCore); 5645 mPictureUpdatePausedForFocusChange = false; 5646 } 5647 } else { 5648 JWebCoreJavaBridge.removeActiveWebView(this); 5649 final WebSettings settings = getSettings(); 5650 if (settings != null && settings.enableSmoothTransition() && 5651 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5652 WebViewCore.pauseUpdatePicture(mWebViewCore); 5653 mPictureUpdatePausedForFocusChange = true; 5654 } 5655 } 5656 super.onWindowFocusChanged(hasWindowFocus); 5657 } 5658 5659 /* 5660 * Pass a message to WebCore Thread, telling the WebCore::Page's 5661 * FocusController to be "inactive" so that it will 5662 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5663 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5664 */ 5665 /* package */ void setFocusControllerActive(boolean active) { 5666 if (mWebViewCore == null) return; 5667 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5668 // Need to send this message after the document regains focus. 5669 if (active && mListBoxMessage != null) { 5670 mWebViewCore.sendMessage(mListBoxMessage); 5671 mListBoxMessage = null; 5672 } 5673 } 5674 5675 @Override 5676 protected void onFocusChanged(boolean focused, int direction, 5677 Rect previouslyFocusedRect) { 5678 if (DebugFlags.WEB_VIEW) { 5679 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5680 } 5681 if (focused) { 5682 // When we regain focus, if we have window focus, resume drawing 5683 // the cursor ring 5684 if (hasWindowFocus()) { 5685 mDrawCursorRing = true; 5686 if (mNativeClass != 0) { 5687 recordButtons(null, true, false, true); 5688 } 5689 setFocusControllerActive(true); 5690 //} else { 5691 // The WebView has gained focus while we do not have 5692 // windowfocus. When our window lost focus, we should have 5693 // called recordButtons(false...) 5694 } 5695 } else { 5696 // When we lost focus, unless focus went to the TextView (which is 5697 // true if we are in editing mode), stop drawing the cursor ring. 5698 if (!inEditingMode()) { 5699 mDrawCursorRing = false; 5700 if (mNativeClass != 0) { 5701 recordButtons(null, false, false, true); 5702 } 5703 setFocusControllerActive(false); 5704 } 5705 mKeysPressed.clear(); 5706 } 5707 5708 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5709 } 5710 5711 void setGLRectViewport() { 5712 // Use the getGlobalVisibleRect() to get the intersection among the parents 5713 // visible == false means we're clipped - send a null rect down to indicate that 5714 // we should not draw 5715 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5716 if (visible) { 5717 // Then need to invert the Y axis, just for GL 5718 View rootView = getRootView(); 5719 int rootViewHeight = rootView.getHeight(); 5720 mViewRectViewport.set(mGLRectViewport); 5721 int savedWebViewBottom = mGLRectViewport.bottom; 5722 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5723 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5724 mGLViewportEmpty = false; 5725 } else { 5726 mGLViewportEmpty = true; 5727 } 5728 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5729 mGLViewportEmpty ? null : mViewRectViewport); 5730 } 5731 5732 /** 5733 * @hide 5734 */ 5735 @Override 5736 protected boolean setFrame(int left, int top, int right, int bottom) { 5737 boolean changed = super.setFrame(left, top, right, bottom); 5738 if (!changed && mHeightCanMeasure) { 5739 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5740 // in WebViewCore after we get the first layout. We do call 5741 // requestLayout() when we get contentSizeChanged(). But the View 5742 // system won't call onSizeChanged if the dimension is not changed. 5743 // In this case, we need to call sendViewSizeZoom() explicitly to 5744 // notify the WebKit about the new dimensions. 5745 sendViewSizeZoom(false); 5746 } 5747 setGLRectViewport(); 5748 return changed; 5749 } 5750 5751 @Override 5752 protected void onSizeChanged(int w, int h, int ow, int oh) { 5753 super.onSizeChanged(w, h, ow, oh); 5754 5755 // adjust the max viewport width depending on the view dimensions. This 5756 // is to ensure the scaling is not going insane. So do not shrink it if 5757 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5758 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5759 if (newMaxViewportWidth > sMaxViewportWidth) { 5760 sMaxViewportWidth = newMaxViewportWidth; 5761 } 5762 5763 mZoomManager.onSizeChanged(w, h, ow, oh); 5764 5765 if (mLoadedPicture != null && mDelaySetPicture == null) { 5766 // Size changes normally result in a new picture 5767 // Re-set the loaded picture to simulate that 5768 // However, do not update the base layer as that hasn't changed 5769 setNewPicture(mLoadedPicture, false); 5770 } 5771 } 5772 5773 @Override 5774 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5775 super.onScrollChanged(l, t, oldl, oldt); 5776 if (!mInOverScrollMode) { 5777 sendOurVisibleRect(); 5778 // update WebKit if visible title bar height changed. The logic is same 5779 // as getVisibleTitleHeightImpl. 5780 int titleHeight = getTitleHeight(); 5781 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5782 sendViewSizeZoom(false); 5783 } 5784 } 5785 } 5786 5787 @Override 5788 public boolean dispatchKeyEvent(KeyEvent event) { 5789 switch (event.getAction()) { 5790 case KeyEvent.ACTION_DOWN: 5791 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5792 break; 5793 case KeyEvent.ACTION_MULTIPLE: 5794 // Always accept the action. 5795 break; 5796 case KeyEvent.ACTION_UP: 5797 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5798 if (location == -1) { 5799 // We did not receive the key down for this key, so do not 5800 // handle the key up. 5801 return false; 5802 } else { 5803 // We did receive the key down. Handle the key up, and 5804 // remove it from our pressed keys. 5805 mKeysPressed.remove(location); 5806 } 5807 break; 5808 default: 5809 // Accept the action. This should not happen, unless a new 5810 // action is added to KeyEvent. 5811 break; 5812 } 5813 if (inEditingMode() && mWebTextView.isFocused()) { 5814 // Ensure that the WebTextView gets the event, even if it does 5815 // not currently have a bounds. 5816 return mWebTextView.dispatchKeyEvent(event); 5817 } else { 5818 return super.dispatchKeyEvent(event); 5819 } 5820 } 5821 5822 /* 5823 * Here is the snap align logic: 5824 * 1. If it starts nearly horizontally or vertically, snap align; 5825 * 2. If there is a dramitic direction change, let it go; 5826 * 5827 * Adjustable parameters. Angle is the radians on a unit circle, limited 5828 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5829 */ 5830 private static final float HSLOPE_TO_START_SNAP = .25f; 5831 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5832 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5833 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5834 /* 5835 * These values are used to influence the average angle when entering 5836 * snap mode. If is is the first movement entering snap, we set the average 5837 * to the appropriate ideal. If the user is entering into snap after the 5838 * first movement, then we average the average angle with these values. 5839 */ 5840 private static final float ANGLE_VERT = 2f; 5841 private static final float ANGLE_HORIZ = 0f; 5842 /* 5843 * The modified moving average weight. 5844 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5845 */ 5846 private static final float MMA_WEIGHT_N = 5; 5847 5848 private boolean hitFocusedPlugin(int contentX, int contentY) { 5849 if (DebugFlags.WEB_VIEW) { 5850 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5851 Rect r = nativeFocusNodeBounds(); 5852 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5853 + ", " + r.right + ", " + r.bottom + ")"); 5854 } 5855 return nativeFocusIsPlugin() 5856 && nativeFocusNodeBounds().contains(contentX, contentY); 5857 } 5858 5859 private boolean shouldForwardTouchEvent() { 5860 if (mFullScreenHolder != null) return true; 5861 if (mBlockWebkitViewMessages) return false; 5862 return mForwardTouchEvents 5863 && !mSelectingText 5864 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5865 && mPreventDefault != PREVENT_DEFAULT_NO; 5866 } 5867 5868 private boolean inFullScreenMode() { 5869 return mFullScreenHolder != null; 5870 } 5871 5872 private void dismissFullScreenMode() { 5873 if (inFullScreenMode()) { 5874 mFullScreenHolder.hide(); 5875 mFullScreenHolder = null; 5876 } 5877 } 5878 5879 void onPinchToZoomAnimationStart() { 5880 // cancel the single touch handling 5881 cancelTouch(); 5882 onZoomAnimationStart(); 5883 } 5884 5885 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5886 onZoomAnimationEnd(); 5887 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5888 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5889 // as it may trigger the unwanted fling. 5890 mTouchMode = TOUCH_PINCH_DRAG; 5891 mConfirmMove = true; 5892 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5893 } 5894 5895 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5896 // layer is found. 5897 private void startScrollingLayer(float x, float y) { 5898 int contentX = viewToContentX((int) x + mScrollX); 5899 int contentY = viewToContentY((int) y + mScrollY); 5900 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5901 mScrollingLayerRect, mScrollingLayerBounds); 5902 if (mScrollingLayer != 0) { 5903 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5904 } 5905 } 5906 5907 // 1/(density * density) used to compute the distance between points. 5908 // Computed in init(). 5909 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5910 5911 // The distance between two points reported in onTouchEvent scaled by the 5912 // density of the screen. 5913 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5914 5915 @Override 5916 public boolean onHoverEvent(MotionEvent event) { 5917 if (mNativeClass == 0) { 5918 return false; 5919 } 5920 WebViewCore.CursorData data = cursorDataNoPosition(); 5921 data.mX = viewToContentX((int) event.getX() + mScrollX); 5922 data.mY = viewToContentY((int) event.getY() + mScrollY); 5923 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5924 return true; 5925 } 5926 5927 @Override 5928 public boolean onTouchEvent(MotionEvent ev) { 5929 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5930 return false; 5931 } 5932 5933 if (DebugFlags.WEB_VIEW) { 5934 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5935 + " mTouchMode=" + mTouchMode 5936 + " numPointers=" + ev.getPointerCount()); 5937 } 5938 5939 // If WebKit wasn't interested in this multitouch gesture, enqueue 5940 // the event for handling directly rather than making the round trip 5941 // to WebKit and back. 5942 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5943 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5944 } else { 5945 mTouchEventQueue.enqueueTouchEvent(ev); 5946 } 5947 5948 // Since all events are handled asynchronously, we always want the gesture stream. 5949 return true; 5950 } 5951 5952 private float calculateDragAngle(int dx, int dy) { 5953 dx = Math.abs(dx); 5954 dy = Math.abs(dy); 5955 return (float) Math.atan2(dy, dx); 5956 } 5957 5958 /* 5959 * Common code for single touch and multi-touch. 5960 * (x, y) denotes current focus point, which is the touch point for single touch 5961 * and the middle point for multi-touch. 5962 */ 5963 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5964 long eventTime = ev.getEventTime(); 5965 5966 // Due to the touch screen edge effect, a touch closer to the edge 5967 // always snapped to the edge. As getViewWidth() can be different from 5968 // getWidth() due to the scrollbar, adjusting the point to match 5969 // getViewWidth(). Same applied to the height. 5970 x = Math.min(x, getViewWidth() - 1); 5971 y = Math.min(y, getViewHeightWithTitle() - 1); 5972 5973 int deltaX = mLastTouchX - x; 5974 int deltaY = mLastTouchY - y; 5975 int contentX = viewToContentX(x + mScrollX); 5976 int contentY = viewToContentY(y + mScrollY); 5977 5978 switch (action) { 5979 case MotionEvent.ACTION_DOWN: { 5980 mPreventDefault = PREVENT_DEFAULT_NO; 5981 mConfirmMove = false; 5982 mInitialHitTestResult = null; 5983 if (!mScroller.isFinished()) { 5984 // stop the current scroll animation, but if this is 5985 // the start of a fling, allow it to add to the current 5986 // fling's velocity 5987 mScroller.abortAnimation(); 5988 mTouchMode = TOUCH_DRAG_START_MODE; 5989 mConfirmMove = true; 5990 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5991 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5992 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5993 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 5994 removeTouchHighlight(); 5995 } 5996 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5997 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5998 } else { 5999 // commit the short press action for the previous tap 6000 doShortPress(); 6001 mTouchMode = TOUCH_INIT_MODE; 6002 mDeferTouchProcess = !mBlockWebkitViewMessages 6003 && (!inFullScreenMode() && mForwardTouchEvents) 6004 ? hitFocusedPlugin(contentX, contentY) 6005 : false; 6006 } 6007 } else { // the normal case 6008 mTouchMode = TOUCH_INIT_MODE; 6009 mDeferTouchProcess = !mBlockWebkitViewMessages 6010 && (!inFullScreenMode() && mForwardTouchEvents) 6011 ? hitFocusedPlugin(contentX, contentY) 6012 : false; 6013 if (!mBlockWebkitViewMessages) { 6014 mWebViewCore.sendMessage( 6015 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6016 } 6017 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6018 TouchHighlightData data = new TouchHighlightData(); 6019 data.mX = contentX; 6020 data.mY = contentY; 6021 data.mNativeLayerRect = new Rect(); 6022 data.mNativeLayer = nativeScrollableLayer( 6023 contentX, contentY, data.mNativeLayerRect, null); 6024 data.mSlop = viewToContentDimension(mNavSlop); 6025 mTouchHighlightRegion.setEmpty(); 6026 if (!mBlockWebkitViewMessages) { 6027 mTouchHighlightRequested = System.currentTimeMillis(); 6028 mWebViewCore.sendMessageAtFrontOfQueue( 6029 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data); 6030 } 6031 if (DEBUG_TOUCH_HIGHLIGHT) { 6032 if (getSettings().getNavDump()) { 6033 mTouchHighlightX = (int) x + mScrollX; 6034 mTouchHighlightY = (int) y + mScrollY; 6035 mPrivateHandler.postDelayed(new Runnable() { 6036 public void run() { 6037 mTouchHighlightX = mTouchHighlightY = 0; 6038 invalidate(); 6039 } 6040 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6041 } 6042 } 6043 } 6044 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6045 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6046 (eventTime - mLastTouchUpTime), eventTime); 6047 } 6048 if (mSelectingText) { 6049 mDrawSelectionPointer = false; 6050 mSelectionStarted = nativeStartSelection(contentX, contentY); 6051 if (DebugFlags.WEB_VIEW) { 6052 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6053 } 6054 invalidate(); 6055 } 6056 } 6057 // Trigger the link 6058 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6059 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6060 mPrivateHandler.sendEmptyMessageDelayed( 6061 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6062 mPrivateHandler.sendEmptyMessageDelayed( 6063 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6064 if (inFullScreenMode() || mDeferTouchProcess) { 6065 mPreventDefault = PREVENT_DEFAULT_YES; 6066 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6067 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6068 } else { 6069 mPreventDefault = PREVENT_DEFAULT_NO; 6070 } 6071 // pass the touch events from UI thread to WebCore thread 6072 if (shouldForwardTouchEvent()) { 6073 TouchEventData ted = new TouchEventData(); 6074 ted.mAction = action; 6075 ted.mIds = new int[1]; 6076 ted.mIds[0] = ev.getPointerId(0); 6077 ted.mPoints = new Point[1]; 6078 ted.mPoints[0] = new Point(contentX, contentY); 6079 ted.mPointsInView = new Point[1]; 6080 ted.mPointsInView[0] = new Point(x, y); 6081 ted.mMetaState = ev.getMetaState(); 6082 ted.mReprocess = mDeferTouchProcess; 6083 ted.mNativeLayer = nativeScrollableLayer( 6084 contentX, contentY, ted.mNativeLayerRect, null); 6085 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6086 mTouchEventQueue.preQueueTouchEventData(ted); 6087 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6088 if (mDeferTouchProcess) { 6089 // still needs to set them for compute deltaX/Y 6090 mLastTouchX = x; 6091 mLastTouchY = y; 6092 break; 6093 } 6094 if (!inFullScreenMode()) { 6095 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6096 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6097 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6098 action, 0), TAP_TIMEOUT); 6099 } 6100 } 6101 } 6102 startTouch(x, y, eventTime); 6103 break; 6104 } 6105 case MotionEvent.ACTION_MOVE: { 6106 boolean firstMove = false; 6107 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6108 >= mTouchSlopSquare) { 6109 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6110 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6111 mConfirmMove = true; 6112 firstMove = true; 6113 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6114 mTouchMode = TOUCH_INIT_MODE; 6115 } 6116 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6117 removeTouchHighlight(); 6118 } 6119 } 6120 // pass the touch events from UI thread to WebCore thread 6121 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6122 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6123 TouchEventData ted = new TouchEventData(); 6124 ted.mAction = action; 6125 ted.mIds = new int[1]; 6126 ted.mIds[0] = ev.getPointerId(0); 6127 ted.mPoints = new Point[1]; 6128 ted.mPoints[0] = new Point(contentX, contentY); 6129 ted.mPointsInView = new Point[1]; 6130 ted.mPointsInView[0] = new Point(x, y); 6131 ted.mMetaState = ev.getMetaState(); 6132 ted.mReprocess = mDeferTouchProcess; 6133 ted.mNativeLayer = mScrollingLayer; 6134 ted.mNativeLayerRect.set(mScrollingLayerRect); 6135 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6136 mTouchEventQueue.preQueueTouchEventData(ted); 6137 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6138 mLastSentTouchTime = eventTime; 6139 if (mDeferTouchProcess) { 6140 break; 6141 } 6142 if (firstMove && !inFullScreenMode()) { 6143 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6144 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6145 action, 0), TAP_TIMEOUT); 6146 } 6147 } 6148 if (mTouchMode == TOUCH_DONE_MODE 6149 || mPreventDefault == PREVENT_DEFAULT_YES) { 6150 // no dragging during scroll zoom animation, or when prevent 6151 // default is yes 6152 break; 6153 } 6154 if (mVelocityTracker == null) { 6155 Log.e(LOGTAG, "Got null mVelocityTracker when " 6156 + "mPreventDefault = " + mPreventDefault 6157 + " mDeferTouchProcess = " + mDeferTouchProcess 6158 + " mTouchMode = " + mTouchMode); 6159 } else { 6160 mVelocityTracker.addMovement(ev); 6161 } 6162 if (mSelectingText && mSelectionStarted) { 6163 if (DebugFlags.WEB_VIEW) { 6164 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6165 } 6166 ViewParent parent = getParent(); 6167 if (parent != null) { 6168 parent.requestDisallowInterceptTouchEvent(true); 6169 } 6170 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6171 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6172 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6173 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6174 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6175 && !mSentAutoScrollMessage) { 6176 mSentAutoScrollMessage = true; 6177 mPrivateHandler.sendEmptyMessageDelayed( 6178 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6179 } 6180 if (deltaX != 0 || deltaY != 0) { 6181 nativeExtendSelection(contentX, contentY); 6182 invalidate(); 6183 } 6184 break; 6185 } 6186 6187 if (mTouchMode != TOUCH_DRAG_MODE && 6188 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6189 6190 if (!mConfirmMove) { 6191 break; 6192 } 6193 6194 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6195 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6196 // track mLastTouchTime as we may need to do fling at 6197 // ACTION_UP 6198 mLastTouchTime = eventTime; 6199 break; 6200 } 6201 6202 // Only lock dragging to one axis if we don't have a scale in progress. 6203 // Scaling implies free-roaming movement. Note this is only ever a question 6204 // if mZoomManager.supportsPanDuringZoom() is true. 6205 final ScaleGestureDetector detector = 6206 mZoomManager.getMultiTouchGestureDetector(); 6207 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6208 if (detector == null || !detector.isInProgress()) { 6209 // if it starts nearly horizontal or vertical, enforce it 6210 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6211 mSnapScrollMode = SNAP_X; 6212 mSnapPositive = deltaX > 0; 6213 mAverageAngle = ANGLE_HORIZ; 6214 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6215 mSnapScrollMode = SNAP_Y; 6216 mSnapPositive = deltaY > 0; 6217 mAverageAngle = ANGLE_VERT; 6218 } 6219 } 6220 6221 mTouchMode = TOUCH_DRAG_MODE; 6222 mLastTouchX = x; 6223 mLastTouchY = y; 6224 deltaX = 0; 6225 deltaY = 0; 6226 6227 startScrollingLayer(x, y); 6228 startDrag(); 6229 } 6230 6231 // do pan 6232 boolean done = false; 6233 boolean keepScrollBarsVisible = false; 6234 if (deltaX == 0 && deltaY == 0) { 6235 keepScrollBarsVisible = done = true; 6236 } else { 6237 mAverageAngle += 6238 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6239 / MMA_WEIGHT_N; 6240 if (mSnapScrollMode != SNAP_NONE) { 6241 if (mSnapScrollMode == SNAP_Y) { 6242 // radical change means getting out of snap mode 6243 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6244 mSnapScrollMode = SNAP_NONE; 6245 } 6246 } 6247 if (mSnapScrollMode == SNAP_X) { 6248 // radical change means getting out of snap mode 6249 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6250 mSnapScrollMode = SNAP_NONE; 6251 } 6252 } 6253 } else { 6254 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6255 mSnapScrollMode = SNAP_X; 6256 mSnapPositive = deltaX > 0; 6257 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6258 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6259 mSnapScrollMode = SNAP_Y; 6260 mSnapPositive = deltaY > 0; 6261 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6262 } 6263 } 6264 if (mSnapScrollMode != SNAP_NONE) { 6265 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6266 deltaY = 0; 6267 } else { 6268 deltaX = 0; 6269 } 6270 } 6271 mLastTouchX = x; 6272 mLastTouchY = y; 6273 if ((deltaX | deltaY) != 0) { 6274 mHeldMotionless = MOTIONLESS_FALSE; 6275 } 6276 mLastTouchTime = eventTime; 6277 } 6278 6279 doDrag(deltaX, deltaY); 6280 6281 // Turn off scrollbars when dragging a layer. 6282 if (keepScrollBarsVisible && 6283 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6284 if (mHeldMotionless != MOTIONLESS_TRUE) { 6285 mHeldMotionless = MOTIONLESS_TRUE; 6286 invalidate(); 6287 } 6288 // keep the scrollbar on the screen even there is no scroll 6289 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6290 false); 6291 // return false to indicate that we can't pan out of the 6292 // view space 6293 return !done; 6294 } 6295 break; 6296 } 6297 case MotionEvent.ACTION_UP: { 6298 if (!isFocused()) requestFocus(); 6299 // pass the touch events from UI thread to WebCore thread 6300 if (shouldForwardTouchEvent()) { 6301 TouchEventData ted = new TouchEventData(); 6302 ted.mIds = new int[1]; 6303 ted.mIds[0] = ev.getPointerId(0); 6304 ted.mAction = action; 6305 ted.mPoints = new Point[1]; 6306 ted.mPoints[0] = new Point(contentX, contentY); 6307 ted.mPointsInView = new Point[1]; 6308 ted.mPointsInView[0] = new Point(x, y); 6309 ted.mMetaState = ev.getMetaState(); 6310 ted.mReprocess = mDeferTouchProcess; 6311 ted.mNativeLayer = mScrollingLayer; 6312 ted.mNativeLayerRect.set(mScrollingLayerRect); 6313 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6314 mTouchEventQueue.preQueueTouchEventData(ted); 6315 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6316 } 6317 mLastTouchUpTime = eventTime; 6318 if (mSentAutoScrollMessage) { 6319 mAutoScrollX = mAutoScrollY = 0; 6320 } 6321 switch (mTouchMode) { 6322 case TOUCH_DOUBLE_TAP_MODE: // double tap 6323 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6324 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6325 if (inFullScreenMode() || mDeferTouchProcess) { 6326 TouchEventData ted = new TouchEventData(); 6327 ted.mIds = new int[1]; 6328 ted.mIds[0] = ev.getPointerId(0); 6329 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6330 ted.mPoints = new Point[1]; 6331 ted.mPoints[0] = new Point(contentX, contentY); 6332 ted.mPointsInView = new Point[1]; 6333 ted.mPointsInView[0] = new Point(x, y); 6334 ted.mMetaState = ev.getMetaState(); 6335 ted.mReprocess = mDeferTouchProcess; 6336 ted.mNativeLayer = nativeScrollableLayer( 6337 contentX, contentY, 6338 ted.mNativeLayerRect, null); 6339 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6340 mTouchEventQueue.preQueueTouchEventData(ted); 6341 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6342 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6343 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6344 mTouchMode = TOUCH_DONE_MODE; 6345 } 6346 break; 6347 case TOUCH_INIT_MODE: // tap 6348 case TOUCH_SHORTPRESS_START_MODE: 6349 case TOUCH_SHORTPRESS_MODE: 6350 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6351 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6352 if (mConfirmMove) { 6353 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6354 " WebCore's response for touch down."); 6355 if (mPreventDefault != PREVENT_DEFAULT_YES 6356 && (computeMaxScrollX() > 0 6357 || computeMaxScrollY() > 0)) { 6358 // If the user has performed a very quick touch 6359 // sequence it is possible that we may get here 6360 // before WebCore has had a chance to process the events. 6361 // In this case, any call to preventDefault in the 6362 // JS touch handler will not have been executed yet. 6363 // Hence we will see both the UI (now) and WebCore 6364 // (when context switches) handling the event, 6365 // regardless of whether the web developer actually 6366 // doeses preventDefault in their touch handler. This 6367 // is the nature of our asynchronous touch model. 6368 6369 // we will not rewrite drag code here, but we 6370 // will try fling if it applies. 6371 WebViewCore.reducePriority(); 6372 // to get better performance, pause updating the 6373 // picture 6374 WebViewCore.pauseUpdatePicture(mWebViewCore); 6375 // fall through to TOUCH_DRAG_MODE 6376 } else { 6377 // WebKit may consume the touch event and modify 6378 // DOM. drawContentPicture() will be called with 6379 // animateSroll as true for better performance. 6380 // Force redraw in high-quality. 6381 invalidate(); 6382 break; 6383 } 6384 } else { 6385 if (mSelectingText) { 6386 // tapping on selection or controls does nothing 6387 if (!nativeHitSelection(contentX, contentY)) { 6388 selectionDone(); 6389 } 6390 break; 6391 } 6392 // only trigger double tap if the WebView is 6393 // scalable 6394 if (mTouchMode == TOUCH_INIT_MODE 6395 && (canZoomIn() || canZoomOut())) { 6396 mPrivateHandler.sendEmptyMessageDelayed( 6397 RELEASE_SINGLE_TAP, ViewConfiguration 6398 .getDoubleTapTimeout()); 6399 } else { 6400 doShortPress(); 6401 } 6402 break; 6403 } 6404 case TOUCH_DRAG_MODE: 6405 case TOUCH_DRAG_LAYER_MODE: 6406 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6407 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6408 // if the user waits a while w/o moving before the 6409 // up, we don't want to do a fling 6410 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6411 if (mVelocityTracker == null) { 6412 Log.e(LOGTAG, "Got null mVelocityTracker when " 6413 + "mPreventDefault = " 6414 + mPreventDefault 6415 + " mDeferTouchProcess = " 6416 + mDeferTouchProcess); 6417 } else { 6418 mVelocityTracker.addMovement(ev); 6419 } 6420 // set to MOTIONLESS_IGNORE so that it won't keep 6421 // removing and sending message in 6422 // drawCoreAndCursorRing() 6423 mHeldMotionless = MOTIONLESS_IGNORE; 6424 doFling(); 6425 break; 6426 } else { 6427 if (mScroller.springBack(mScrollX, mScrollY, 0, 6428 computeMaxScrollX(), 0, 6429 computeMaxScrollY())) { 6430 invalidate(); 6431 } 6432 } 6433 // redraw in high-quality, as we're done dragging 6434 mHeldMotionless = MOTIONLESS_TRUE; 6435 invalidate(); 6436 // fall through 6437 case TOUCH_DRAG_START_MODE: 6438 // TOUCH_DRAG_START_MODE should not happen for the real 6439 // device as we almost certain will get a MOVE. But this 6440 // is possible on emulator. 6441 mLastVelocity = 0; 6442 WebViewCore.resumePriority(); 6443 if (!mSelectingText) { 6444 WebViewCore.resumeUpdatePicture(mWebViewCore); 6445 } 6446 break; 6447 } 6448 stopTouch(); 6449 break; 6450 } 6451 case MotionEvent.ACTION_CANCEL: { 6452 if (mTouchMode == TOUCH_DRAG_MODE) { 6453 mScroller.springBack(mScrollX, mScrollY, 0, 6454 computeMaxScrollX(), 0, computeMaxScrollY()); 6455 invalidate(); 6456 } 6457 cancelWebCoreTouchEvent(contentX, contentY, false); 6458 cancelTouch(); 6459 break; 6460 } 6461 } 6462 return true; 6463 } 6464 6465 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6466 TouchEventData ted = new TouchEventData(); 6467 ted.mAction = ev.getActionMasked(); 6468 final int count = ev.getPointerCount(); 6469 ted.mIds = new int[count]; 6470 ted.mPoints = new Point[count]; 6471 ted.mPointsInView = new Point[count]; 6472 for (int c = 0; c < count; c++) { 6473 ted.mIds[c] = ev.getPointerId(c); 6474 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6475 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6476 ted.mPoints[c] = new Point(x, y); 6477 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6478 } 6479 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6480 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6481 ted.mActionIndex = ev.getActionIndex(); 6482 } 6483 ted.mMetaState = ev.getMetaState(); 6484 ted.mReprocess = true; 6485 ted.mMotionEvent = MotionEvent.obtain(ev); 6486 ted.mSequence = sequence; 6487 mTouchEventQueue.preQueueTouchEventData(ted); 6488 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6489 cancelLongPress(); 6490 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6491 } 6492 6493 void handleMultiTouchInWebView(MotionEvent ev) { 6494 if (DebugFlags.WEB_VIEW) { 6495 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6496 + " mTouchMode=" + mTouchMode 6497 + " numPointers=" + ev.getPointerCount() 6498 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6499 } 6500 6501 final ScaleGestureDetector detector = 6502 mZoomManager.getMultiTouchGestureDetector(); 6503 6504 // A few apps use WebView but don't instantiate gesture detector. 6505 // We don't need to support multi touch for them. 6506 if (detector == null) return; 6507 6508 float x = ev.getX(); 6509 float y = ev.getY(); 6510 6511 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6512 detector.onTouchEvent(ev); 6513 6514 if (detector.isInProgress()) { 6515 if (DebugFlags.WEB_VIEW) { 6516 Log.v(LOGTAG, "detector is in progress"); 6517 } 6518 mLastTouchTime = ev.getEventTime(); 6519 x = detector.getFocusX(); 6520 y = detector.getFocusY(); 6521 6522 cancelLongPress(); 6523 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6524 if (!mZoomManager.supportsPanDuringZoom()) { 6525 return; 6526 } 6527 mTouchMode = TOUCH_DRAG_MODE; 6528 if (mVelocityTracker == null) { 6529 mVelocityTracker = VelocityTracker.obtain(); 6530 } 6531 } 6532 } 6533 6534 int action = ev.getActionMasked(); 6535 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6536 cancelTouch(); 6537 action = MotionEvent.ACTION_DOWN; 6538 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6539 // set mLastTouchX/Y to the remaining points for multi-touch. 6540 mLastTouchX = Math.round(x); 6541 mLastTouchY = Math.round(y); 6542 } else if (action == MotionEvent.ACTION_MOVE) { 6543 // negative x or y indicate it is on the edge, skip it. 6544 if (x < 0 || y < 0) { 6545 return; 6546 } 6547 } 6548 6549 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6550 } 6551 6552 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6553 if (shouldForwardTouchEvent()) { 6554 if (removeEvents) { 6555 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6556 } 6557 TouchEventData ted = new TouchEventData(); 6558 ted.mIds = new int[1]; 6559 ted.mIds[0] = 0; 6560 ted.mPoints = new Point[1]; 6561 ted.mPoints[0] = new Point(x, y); 6562 ted.mPointsInView = new Point[1]; 6563 int viewX = contentToViewX(x) - mScrollX; 6564 int viewY = contentToViewY(y) - mScrollY; 6565 ted.mPointsInView[0] = new Point(viewX, viewY); 6566 ted.mAction = MotionEvent.ACTION_CANCEL; 6567 ted.mNativeLayer = nativeScrollableLayer( 6568 x, y, ted.mNativeLayerRect, null); 6569 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6570 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6571 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6572 6573 if (removeEvents) { 6574 // Mark this after sending the message above; we should 6575 // be willing to ignore the cancel event that we just sent. 6576 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6577 } 6578 } 6579 } 6580 6581 private void startTouch(float x, float y, long eventTime) { 6582 // Remember where the motion event started 6583 mStartTouchX = mLastTouchX = Math.round(x); 6584 mStartTouchY = mLastTouchY = Math.round(y); 6585 mLastTouchTime = eventTime; 6586 mVelocityTracker = VelocityTracker.obtain(); 6587 mSnapScrollMode = SNAP_NONE; 6588 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6589 ViewConfiguration.getTapTimeout()); 6590 } 6591 6592 private void startDrag() { 6593 WebViewCore.reducePriority(); 6594 // to get better performance, pause updating the picture 6595 WebViewCore.pauseUpdatePicture(mWebViewCore); 6596 nativeSetIsScrolling(true); 6597 6598 if (!mDragFromTextInput) { 6599 nativeHideCursor(); 6600 } 6601 6602 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6603 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6604 mZoomManager.invokeZoomPicker(); 6605 } 6606 } 6607 6608 private void doDrag(int deltaX, int deltaY) { 6609 if ((deltaX | deltaY) != 0) { 6610 int oldX = mScrollX; 6611 int oldY = mScrollY; 6612 int rangeX = computeMaxScrollX(); 6613 int rangeY = computeMaxScrollY(); 6614 int overscrollDistance = mOverscrollDistance; 6615 6616 // Check for the original scrolling layer in case we change 6617 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6618 // reached the edge of a layer but mScrollingLayer will be non-zero 6619 // if we initiated the drag on a layer. 6620 if (mScrollingLayer != 0) { 6621 final int contentX = viewToContentDimension(deltaX); 6622 final int contentY = viewToContentDimension(deltaY); 6623 6624 // Check the scrolling bounds to see if we will actually do any 6625 // scrolling. The rectangle is in document coordinates. 6626 final int maxX = mScrollingLayerRect.right; 6627 final int maxY = mScrollingLayerRect.bottom; 6628 final int resultX = Math.max(0, 6629 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6630 final int resultY = Math.max(0, 6631 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6632 6633 if (resultX != mScrollingLayerRect.left || 6634 resultY != mScrollingLayerRect.top) { 6635 // In case we switched to dragging the page. 6636 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6637 deltaX = contentX; 6638 deltaY = contentY; 6639 oldX = mScrollingLayerRect.left; 6640 oldY = mScrollingLayerRect.top; 6641 rangeX = maxX; 6642 rangeY = maxY; 6643 } else { 6644 // Scroll the main page if we are not going to scroll the 6645 // layer. This does not reset mScrollingLayer in case the 6646 // user changes directions and the layer can scroll the 6647 // other way. 6648 mTouchMode = TOUCH_DRAG_MODE; 6649 } 6650 } 6651 6652 if (mOverScrollGlow != null) { 6653 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6654 } 6655 6656 overScrollBy(deltaX, deltaY, oldX, oldY, 6657 rangeX, rangeY, 6658 mOverscrollDistance, mOverscrollDistance, true); 6659 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6660 invalidate(); 6661 } 6662 } 6663 mZoomManager.keepZoomPickerVisible(); 6664 } 6665 6666 private void stopTouch() { 6667 if (mScroller.isFinished() && !mSelectingText 6668 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6669 WebViewCore.resumePriority(); 6670 WebViewCore.resumeUpdatePicture(mWebViewCore); 6671 nativeSetIsScrolling(false); 6672 } 6673 6674 // we also use mVelocityTracker == null to tell us that we are 6675 // not "moving around", so we can take the slower/prettier 6676 // mode in the drawing code 6677 if (mVelocityTracker != null) { 6678 mVelocityTracker.recycle(); 6679 mVelocityTracker = null; 6680 } 6681 6682 // Release any pulled glows 6683 if (mOverScrollGlow != null) { 6684 mOverScrollGlow.releaseAll(); 6685 } 6686 } 6687 6688 private void cancelTouch() { 6689 // we also use mVelocityTracker == null to tell us that we are 6690 // not "moving around", so we can take the slower/prettier 6691 // mode in the drawing code 6692 if (mVelocityTracker != null) { 6693 mVelocityTracker.recycle(); 6694 mVelocityTracker = null; 6695 } 6696 6697 if ((mTouchMode == TOUCH_DRAG_MODE 6698 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6699 WebViewCore.resumePriority(); 6700 WebViewCore.resumeUpdatePicture(mWebViewCore); 6701 nativeSetIsScrolling(false); 6702 } 6703 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6704 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6705 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6706 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6707 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6708 removeTouchHighlight(); 6709 } 6710 mHeldMotionless = MOTIONLESS_TRUE; 6711 mTouchMode = TOUCH_DONE_MODE; 6712 nativeHideCursor(); 6713 } 6714 6715 @Override 6716 public boolean onGenericMotionEvent(MotionEvent event) { 6717 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6718 switch (event.getAction()) { 6719 case MotionEvent.ACTION_SCROLL: { 6720 final float vscroll; 6721 final float hscroll; 6722 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6723 vscroll = 0; 6724 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6725 } else { 6726 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6727 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6728 } 6729 if (hscroll != 0 || vscroll != 0) { 6730 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6731 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6732 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6733 return true; 6734 } 6735 } 6736 } 6737 } 6738 } 6739 return super.onGenericMotionEvent(event); 6740 } 6741 6742 private long mTrackballFirstTime = 0; 6743 private long mTrackballLastTime = 0; 6744 private float mTrackballRemainsX = 0.0f; 6745 private float mTrackballRemainsY = 0.0f; 6746 private int mTrackballXMove = 0; 6747 private int mTrackballYMove = 0; 6748 private boolean mSelectingText = false; 6749 private boolean mSelectionStarted = false; 6750 private boolean mExtendSelection = false; 6751 private boolean mDrawSelectionPointer = false; 6752 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6753 private static final int TRACKBALL_TIMEOUT = 200; 6754 private static final int TRACKBALL_WAIT = 100; 6755 private static final int TRACKBALL_SCALE = 400; 6756 private static final int TRACKBALL_SCROLL_COUNT = 5; 6757 private static final int TRACKBALL_MOVE_COUNT = 10; 6758 private static final int TRACKBALL_MULTIPLIER = 3; 6759 private static final int SELECT_CURSOR_OFFSET = 16; 6760 private static final int SELECT_SCROLL = 5; 6761 private int mSelectX = 0; 6762 private int mSelectY = 0; 6763 private boolean mFocusSizeChanged = false; 6764 private boolean mTrackballDown = false; 6765 private long mTrackballUpTime = 0; 6766 private long mLastCursorTime = 0; 6767 private Rect mLastCursorBounds; 6768 6769 // Set by default; BrowserActivity clears to interpret trackball data 6770 // directly for movement. Currently, the framework only passes 6771 // arrow key events, not trackball events, from one child to the next 6772 private boolean mMapTrackballToArrowKeys = true; 6773 6774 private DrawData mDelaySetPicture; 6775 private DrawData mLoadedPicture; 6776 6777 public void setMapTrackballToArrowKeys(boolean setMap) { 6778 checkThread(); 6779 mMapTrackballToArrowKeys = setMap; 6780 } 6781 6782 void resetTrackballTime() { 6783 mTrackballLastTime = 0; 6784 } 6785 6786 @Override 6787 public boolean onTrackballEvent(MotionEvent ev) { 6788 long time = ev.getEventTime(); 6789 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6790 if (ev.getY() > 0) pageDown(true); 6791 if (ev.getY() < 0) pageUp(true); 6792 return true; 6793 } 6794 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6795 if (mSelectingText) { 6796 return true; // discard press if copy in progress 6797 } 6798 mTrackballDown = true; 6799 if (mNativeClass == 0) { 6800 return false; 6801 } 6802 recordButtons(null, hasFocus() && hasWindowFocus(), true, true); 6803 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6804 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6805 nativeSelectBestAt(mLastCursorBounds); 6806 } 6807 if (DebugFlags.WEB_VIEW) { 6808 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6809 + " time=" + time 6810 + " mLastCursorTime=" + mLastCursorTime); 6811 } 6812 if (isInTouchMode()) requestFocusFromTouch(); 6813 return false; // let common code in onKeyDown at it 6814 } 6815 if (ev.getAction() == MotionEvent.ACTION_UP) { 6816 // LONG_PRESS_CENTER is set in common onKeyDown 6817 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6818 mTrackballDown = false; 6819 mTrackballUpTime = time; 6820 if (mSelectingText) { 6821 if (mExtendSelection) { 6822 copySelection(); 6823 selectionDone(); 6824 } else { 6825 mExtendSelection = true; 6826 nativeSetExtendSelection(); 6827 invalidate(); // draw the i-beam instead of the arrow 6828 } 6829 return true; // discard press if copy in progress 6830 } 6831 if (DebugFlags.WEB_VIEW) { 6832 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6833 + " time=" + time 6834 ); 6835 } 6836 return false; // let common code in onKeyUp at it 6837 } 6838 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6839 AccessibilityManager.getInstance(mContext).isEnabled()) { 6840 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6841 return false; 6842 } 6843 if (mTrackballDown) { 6844 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6845 return true; // discard move if trackball is down 6846 } 6847 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6848 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6849 return true; 6850 } 6851 // TODO: alternatively we can do panning as touch does 6852 switchOutDrawHistory(); 6853 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6854 if (DebugFlags.WEB_VIEW) { 6855 Log.v(LOGTAG, "onTrackballEvent time=" 6856 + time + " last=" + mTrackballLastTime); 6857 } 6858 mTrackballFirstTime = time; 6859 mTrackballXMove = mTrackballYMove = 0; 6860 } 6861 mTrackballLastTime = time; 6862 if (DebugFlags.WEB_VIEW) { 6863 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6864 } 6865 mTrackballRemainsX += ev.getX(); 6866 mTrackballRemainsY += ev.getY(); 6867 doTrackball(time, ev.getMetaState()); 6868 return true; 6869 } 6870 6871 void moveSelection(float xRate, float yRate) { 6872 if (mNativeClass == 0) 6873 return; 6874 int width = getViewWidth(); 6875 int height = getViewHeight(); 6876 mSelectX += xRate; 6877 mSelectY += yRate; 6878 int maxX = width + mScrollX; 6879 int maxY = height + mScrollY; 6880 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6881 , mSelectX)); 6882 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6883 , mSelectY)); 6884 if (DebugFlags.WEB_VIEW) { 6885 Log.v(LOGTAG, "moveSelection" 6886 + " mSelectX=" + mSelectX 6887 + " mSelectY=" + mSelectY 6888 + " mScrollX=" + mScrollX 6889 + " mScrollY=" + mScrollY 6890 + " xRate=" + xRate 6891 + " yRate=" + yRate 6892 ); 6893 } 6894 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6895 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6896 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6897 : 0; 6898 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6899 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6900 : 0; 6901 pinScrollBy(scrollX, scrollY, true, 0); 6902 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6903 requestRectangleOnScreen(select); 6904 invalidate(); 6905 } 6906 6907 private int scaleTrackballX(float xRate, int width) { 6908 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6909 int nextXMove = xMove; 6910 if (xMove > 0) { 6911 if (xMove > mTrackballXMove) { 6912 xMove -= mTrackballXMove; 6913 } 6914 } else if (xMove < mTrackballXMove) { 6915 xMove -= mTrackballXMove; 6916 } 6917 mTrackballXMove = nextXMove; 6918 return xMove; 6919 } 6920 6921 private int scaleTrackballY(float yRate, int height) { 6922 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6923 int nextYMove = yMove; 6924 if (yMove > 0) { 6925 if (yMove > mTrackballYMove) { 6926 yMove -= mTrackballYMove; 6927 } 6928 } else if (yMove < mTrackballYMove) { 6929 yMove -= mTrackballYMove; 6930 } 6931 mTrackballYMove = nextYMove; 6932 return yMove; 6933 } 6934 6935 private int keyCodeToSoundsEffect(int keyCode) { 6936 switch(keyCode) { 6937 case KeyEvent.KEYCODE_DPAD_UP: 6938 return SoundEffectConstants.NAVIGATION_UP; 6939 case KeyEvent.KEYCODE_DPAD_RIGHT: 6940 return SoundEffectConstants.NAVIGATION_RIGHT; 6941 case KeyEvent.KEYCODE_DPAD_DOWN: 6942 return SoundEffectConstants.NAVIGATION_DOWN; 6943 case KeyEvent.KEYCODE_DPAD_LEFT: 6944 return SoundEffectConstants.NAVIGATION_LEFT; 6945 } 6946 throw new IllegalArgumentException("keyCode must be one of " + 6947 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6948 "KEYCODE_DPAD_LEFT}."); 6949 } 6950 6951 private void doTrackball(long time, int metaState) { 6952 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6953 if (elapsed == 0) { 6954 elapsed = TRACKBALL_TIMEOUT; 6955 } 6956 float xRate = mTrackballRemainsX * 1000 / elapsed; 6957 float yRate = mTrackballRemainsY * 1000 / elapsed; 6958 int viewWidth = getViewWidth(); 6959 int viewHeight = getViewHeight(); 6960 if (mSelectingText) { 6961 if (!mDrawSelectionPointer) { 6962 // The last selection was made by touch, disabling drawing the 6963 // selection pointer. Allow the trackball to adjust the 6964 // position of the touch control. 6965 mSelectX = contentToViewX(nativeSelectionX()); 6966 mSelectY = contentToViewY(nativeSelectionY()); 6967 mDrawSelectionPointer = mExtendSelection = true; 6968 nativeSetExtendSelection(); 6969 } 6970 moveSelection(scaleTrackballX(xRate, viewWidth), 6971 scaleTrackballY(yRate, viewHeight)); 6972 mTrackballRemainsX = mTrackballRemainsY = 0; 6973 return; 6974 } 6975 float ax = Math.abs(xRate); 6976 float ay = Math.abs(yRate); 6977 float maxA = Math.max(ax, ay); 6978 if (DebugFlags.WEB_VIEW) { 6979 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6980 + " xRate=" + xRate 6981 + " yRate=" + yRate 6982 + " mTrackballRemainsX=" + mTrackballRemainsX 6983 + " mTrackballRemainsY=" + mTrackballRemainsY); 6984 } 6985 int width = mContentWidth - viewWidth; 6986 int height = mContentHeight - viewHeight; 6987 if (width < 0) width = 0; 6988 if (height < 0) height = 0; 6989 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6990 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6991 maxA = Math.max(ax, ay); 6992 int count = Math.max(0, (int) maxA); 6993 int oldScrollX = mScrollX; 6994 int oldScrollY = mScrollY; 6995 if (count > 0) { 6996 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6997 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6998 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6999 KeyEvent.KEYCODE_DPAD_RIGHT; 7000 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7001 if (DebugFlags.WEB_VIEW) { 7002 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7003 + " count=" + count 7004 + " mTrackballRemainsX=" + mTrackballRemainsX 7005 + " mTrackballRemainsY=" + mTrackballRemainsY); 7006 } 7007 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7008 for (int i = 0; i < count; i++) { 7009 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7010 } 7011 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7012 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7013 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7014 } 7015 mTrackballRemainsX = mTrackballRemainsY = 0; 7016 } 7017 if (count >= TRACKBALL_SCROLL_COUNT) { 7018 int xMove = scaleTrackballX(xRate, width); 7019 int yMove = scaleTrackballY(yRate, height); 7020 if (DebugFlags.WEB_VIEW) { 7021 Log.v(LOGTAG, "doTrackball pinScrollBy" 7022 + " count=" + count 7023 + " xMove=" + xMove + " yMove=" + yMove 7024 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7025 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7026 ); 7027 } 7028 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7029 xMove = 0; 7030 } 7031 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7032 yMove = 0; 7033 } 7034 if (xMove != 0 || yMove != 0) { 7035 pinScrollBy(xMove, yMove, true, 0); 7036 } 7037 } 7038 } 7039 7040 /** 7041 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7042 * @return Maximum horizontal scroll position within real content 7043 */ 7044 int computeMaxScrollX() { 7045 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7046 } 7047 7048 /** 7049 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7050 * @return Maximum vertical scroll position within real content 7051 */ 7052 int computeMaxScrollY() { 7053 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7054 - getViewHeightWithTitle(), 0); 7055 } 7056 7057 boolean updateScrollCoordinates(int x, int y) { 7058 int oldX = mScrollX; 7059 int oldY = mScrollY; 7060 mScrollX = x; 7061 mScrollY = y; 7062 if (oldX != mScrollX || oldY != mScrollY) { 7063 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7064 return true; 7065 } else { 7066 return false; 7067 } 7068 } 7069 7070 public void flingScroll(int vx, int vy) { 7071 checkThread(); 7072 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7073 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7074 invalidate(); 7075 } 7076 7077 private void doFling() { 7078 if (mVelocityTracker == null) { 7079 return; 7080 } 7081 int maxX = computeMaxScrollX(); 7082 int maxY = computeMaxScrollY(); 7083 7084 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7085 int vx = (int) mVelocityTracker.getXVelocity(); 7086 int vy = (int) mVelocityTracker.getYVelocity(); 7087 7088 int scrollX = mScrollX; 7089 int scrollY = mScrollY; 7090 int overscrollDistance = mOverscrollDistance; 7091 int overflingDistance = mOverflingDistance; 7092 7093 // Use the layer's scroll data if applicable. 7094 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7095 scrollX = mScrollingLayerRect.left; 7096 scrollY = mScrollingLayerRect.top; 7097 maxX = mScrollingLayerRect.right; 7098 maxY = mScrollingLayerRect.bottom; 7099 // No overscrolling for layers. 7100 overscrollDistance = overflingDistance = 0; 7101 } 7102 7103 if (mSnapScrollMode != SNAP_NONE) { 7104 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7105 vy = 0; 7106 } else { 7107 vx = 0; 7108 } 7109 } 7110 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7111 WebViewCore.resumePriority(); 7112 if (!mSelectingText) { 7113 WebViewCore.resumeUpdatePicture(mWebViewCore); 7114 } 7115 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7116 invalidate(); 7117 } 7118 return; 7119 } 7120 float currentVelocity = mScroller.getCurrVelocity(); 7121 float velocity = (float) Math.hypot(vx, vy); 7122 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7123 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7124 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7125 - Math.atan2(vy, vx))); 7126 final float circle = (float) (Math.PI) * 2.0f; 7127 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7128 vx += currentVelocity * mLastVelX / mLastVelocity; 7129 vy += currentVelocity * mLastVelY / mLastVelocity; 7130 velocity = (float) Math.hypot(vx, vy); 7131 if (DebugFlags.WEB_VIEW) { 7132 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7133 } 7134 } else if (DebugFlags.WEB_VIEW) { 7135 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7136 } 7137 } else if (DebugFlags.WEB_VIEW) { 7138 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7139 + " current=" + currentVelocity 7140 + " vx=" + vx + " vy=" + vy 7141 + " maxX=" + maxX + " maxY=" + maxY 7142 + " scrollX=" + scrollX + " scrollY=" + scrollY 7143 + " layer=" + mScrollingLayer); 7144 } 7145 7146 // Allow sloppy flings without overscrolling at the edges. 7147 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7148 vx = 0; 7149 } 7150 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7151 vy = 0; 7152 } 7153 7154 if (overscrollDistance < overflingDistance) { 7155 if ((vx > 0 && scrollX == -overscrollDistance) || 7156 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7157 vx = 0; 7158 } 7159 if ((vy > 0 && scrollY == -overscrollDistance) || 7160 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7161 vy = 0; 7162 } 7163 } 7164 7165 mLastVelX = vx; 7166 mLastVelY = vy; 7167 mLastVelocity = velocity; 7168 7169 // no horizontal overscroll if the content just fits 7170 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7171 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7172 // Duration is calculated based on velocity. With range boundaries and overscroll 7173 // we may not know how long the final animation will take. (Hence the deprecation 7174 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7175 // resumes during this effect we will take a performance hit. See computeScroll; 7176 // we resume webcore there when the animation is finished. 7177 final int time = mScroller.getDuration(); 7178 7179 // Suppress scrollbars for layer scrolling. 7180 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7181 awakenScrollBars(time); 7182 } 7183 7184 invalidate(); 7185 } 7186 7187 /** 7188 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7189 * in charge of installing this view to the view hierarchy. This view will 7190 * become visible when the user starts scrolling via touch and fade away if 7191 * the user does not interact with it. 7192 * <p/> 7193 * API version 3 introduces a built-in zoom mechanism that is shown 7194 * automatically by the MapView. This is the preferred approach for 7195 * showing the zoom UI. 7196 * 7197 * @deprecated The built-in zoom mechanism is preferred, see 7198 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7199 */ 7200 @Deprecated 7201 public View getZoomControls() { 7202 checkThread(); 7203 if (!getSettings().supportZoom()) { 7204 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7205 return null; 7206 } 7207 return mZoomManager.getExternalZoomPicker(); 7208 } 7209 7210 void dismissZoomControl() { 7211 mZoomManager.dismissZoomPicker(); 7212 } 7213 7214 float getDefaultZoomScale() { 7215 return mZoomManager.getDefaultScale(); 7216 } 7217 7218 /** 7219 * Return the overview scale of the WebView 7220 * @return The overview scale. 7221 */ 7222 float getZoomOverviewScale() { 7223 return mZoomManager.getZoomOverviewScale(); 7224 } 7225 7226 /** 7227 * @return TRUE if the WebView can be zoomed in. 7228 */ 7229 public boolean canZoomIn() { 7230 checkThread(); 7231 return mZoomManager.canZoomIn(); 7232 } 7233 7234 /** 7235 * @return TRUE if the WebView can be zoomed out. 7236 */ 7237 public boolean canZoomOut() { 7238 checkThread(); 7239 return mZoomManager.canZoomOut(); 7240 } 7241 7242 /** 7243 * Perform zoom in in the webview 7244 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7245 */ 7246 public boolean zoomIn() { 7247 checkThread(); 7248 return mZoomManager.zoomIn(); 7249 } 7250 7251 /** 7252 * Perform zoom out in the webview 7253 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7254 */ 7255 public boolean zoomOut() { 7256 checkThread(); 7257 return mZoomManager.zoomOut(); 7258 } 7259 7260 /** 7261 * This selects the best clickable target at mLastTouchX and mLastTouchY 7262 * and calls showCursorTimed on the native side 7263 */ 7264 private void updateSelection() { 7265 if (mNativeClass == 0) { 7266 return; 7267 } 7268 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7269 // mLastTouchX and mLastTouchY are the point in the current viewport 7270 int contentX = viewToContentX(mLastTouchX + mScrollX); 7271 int contentY = viewToContentY(mLastTouchY + mScrollY); 7272 int slop = viewToContentDimension(mNavSlop); 7273 Rect rect = new Rect(contentX - slop, contentY - slop, 7274 contentX + slop, contentY + slop); 7275 nativeSelectBestAt(rect); 7276 mInitialHitTestResult = hitTestResult(null); 7277 } 7278 7279 /** 7280 * Scroll the focused text field to match the WebTextView 7281 * @param xPercent New x position of the WebTextView from 0 to 1. 7282 */ 7283 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7284 if (!inEditingMode() || mWebViewCore == null) { 7285 return; 7286 } 7287 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7288 new Float(xPercent)); 7289 } 7290 7291 /** 7292 * Scroll the focused textarea vertically to match the WebTextView 7293 * @param y New y position of the WebTextView in view coordinates 7294 */ 7295 /* package */ void scrollFocusedTextInputY(int y) { 7296 if (!inEditingMode() || mWebViewCore == null) { 7297 return; 7298 } 7299 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7300 } 7301 7302 /** 7303 * Set our starting point and time for a drag from the WebTextView. 7304 */ 7305 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7306 if (!inEditingMode()) { 7307 return; 7308 } 7309 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7310 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7311 mLastTouchTime = eventTime; 7312 if (!mScroller.isFinished()) { 7313 abortAnimation(); 7314 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 7315 } 7316 mSnapScrollMode = SNAP_NONE; 7317 mVelocityTracker = VelocityTracker.obtain(); 7318 mTouchMode = TOUCH_DRAG_START_MODE; 7319 } 7320 7321 /** 7322 * Given a motion event from the WebTextView, set its location to our 7323 * coordinates, and handle the event. 7324 */ 7325 /*package*/ boolean textFieldDrag(MotionEvent event) { 7326 if (!inEditingMode()) { 7327 return false; 7328 } 7329 mDragFromTextInput = true; 7330 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7331 (float) (mWebTextView.getTop() - mScrollY)); 7332 boolean result = onTouchEvent(event); 7333 mDragFromTextInput = false; 7334 return result; 7335 } 7336 7337 /** 7338 * Due a touch up from a WebTextView. This will be handled by webkit to 7339 * change the selection. 7340 * @param event MotionEvent in the WebTextView's coordinates. 7341 */ 7342 /*package*/ void touchUpOnTextField(MotionEvent event) { 7343 if (!inEditingMode()) { 7344 return; 7345 } 7346 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7347 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7348 int slop = viewToContentDimension(mNavSlop); 7349 nativeMotionUp(x, y, slop); 7350 } 7351 7352 /** 7353 * Called when pressing the center key or trackball on a textfield. 7354 */ 7355 /*package*/ void centerKeyPressOnTextField() { 7356 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7357 nativeCursorNodePointer()); 7358 } 7359 7360 private void doShortPress() { 7361 if (mNativeClass == 0) { 7362 return; 7363 } 7364 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7365 return; 7366 } 7367 mTouchMode = TOUCH_DONE_MODE; 7368 updateSelection(); 7369 switchOutDrawHistory(); 7370 // mLastTouchX and mLastTouchY are the point in the current viewport 7371 int contentX = viewToContentX(mLastTouchX + mScrollX); 7372 int contentY = viewToContentY(mLastTouchY + mScrollY); 7373 int slop = viewToContentDimension(mNavSlop); 7374 if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) { 7375 // set mTouchHighlightRequested to 0 to cause an immediate 7376 // drawing of the touch rings 7377 mTouchHighlightRequested = 0; 7378 invalidate(mTouchHighlightRegion.getBounds()); 7379 mPrivateHandler.postDelayed(new Runnable() { 7380 @Override 7381 public void run() { 7382 removeTouchHighlight(); 7383 } 7384 }, ViewConfiguration.getPressedStateDuration()); 7385 } 7386 if (getSettings().supportTouchOnly()) { 7387 removeTouchHighlight(); 7388 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7389 // use "0" as generation id to inform WebKit to use the same x/y as 7390 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7391 touchUpData.mMoveGeneration = 0; 7392 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7393 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7394 WebViewCore.MotionUpData motionUpData = new WebViewCore 7395 .MotionUpData(); 7396 motionUpData.mFrame = nativeCacheHitFramePointer(); 7397 motionUpData.mNode = nativeCacheHitNodePointer(); 7398 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7399 motionUpData.mX = contentX; 7400 motionUpData.mY = contentY; 7401 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7402 motionUpData); 7403 } else { 7404 doMotionUp(contentX, contentY); 7405 } 7406 } 7407 7408 private void doMotionUp(int contentX, int contentY) { 7409 int slop = viewToContentDimension(mNavSlop); 7410 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7411 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7412 } 7413 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7414 playSoundEffect(SoundEffectConstants.CLICK); 7415 } 7416 } 7417 7418 /** 7419 * Returns plugin bounds if x/y in content coordinates corresponds to a 7420 * plugin. Otherwise a NULL rectangle is returned. 7421 */ 7422 Rect getPluginBounds(int x, int y) { 7423 int slop = viewToContentDimension(mNavSlop); 7424 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7425 return nativeCacheHitNodeBounds(); 7426 } else { 7427 return null; 7428 } 7429 } 7430 7431 /* 7432 * Return true if the rect (e.g. plugin) is fully visible and maximized 7433 * inside the WebView. 7434 */ 7435 boolean isRectFitOnScreen(Rect rect) { 7436 final int rectWidth = rect.width(); 7437 final int rectHeight = rect.height(); 7438 final int viewWidth = getViewWidth(); 7439 final int viewHeight = getViewHeightWithTitle(); 7440 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7441 scale = mZoomManager.computeScaleWithLimits(scale); 7442 return !mZoomManager.willScaleTriggerZoom(scale) 7443 && contentToViewX(rect.left) >= mScrollX 7444 && contentToViewX(rect.right) <= mScrollX + viewWidth 7445 && contentToViewY(rect.top) >= mScrollY 7446 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7447 } 7448 7449 /* 7450 * Maximize and center the rectangle, specified in the document coordinate 7451 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7452 * animated scroll to center it. If the zoom needs to be changed, find the 7453 * zoom center and do a smooth zoom transition. The rect is in document 7454 * coordinates 7455 */ 7456 void centerFitRect(Rect rect) { 7457 final int rectWidth = rect.width(); 7458 final int rectHeight = rect.height(); 7459 final int viewWidth = getViewWidth(); 7460 final int viewHeight = getViewHeightWithTitle(); 7461 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7462 / rectHeight); 7463 scale = mZoomManager.computeScaleWithLimits(scale); 7464 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7465 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7466 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7467 true, 0); 7468 } else { 7469 float actualScale = mZoomManager.getScale(); 7470 float oldScreenX = rect.left * actualScale - mScrollX; 7471 float rectViewX = rect.left * scale; 7472 float rectViewWidth = rectWidth * scale; 7473 float newMaxWidth = mContentWidth * scale; 7474 float newScreenX = (viewWidth - rectViewWidth) / 2; 7475 // pin the newX to the WebView 7476 if (newScreenX > rectViewX) { 7477 newScreenX = rectViewX; 7478 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7479 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7480 } 7481 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7482 / (scale - actualScale); 7483 float oldScreenY = rect.top * actualScale + getTitleHeight() 7484 - mScrollY; 7485 float rectViewY = rect.top * scale + getTitleHeight(); 7486 float rectViewHeight = rectHeight * scale; 7487 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7488 float newScreenY = (viewHeight - rectViewHeight) / 2; 7489 // pin the newY to the WebView 7490 if (newScreenY > rectViewY) { 7491 newScreenY = rectViewY; 7492 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7493 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7494 } 7495 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7496 / (scale - actualScale); 7497 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7498 mZoomManager.startZoomAnimation(scale, false); 7499 } 7500 } 7501 7502 // Called by JNI to handle a touch on a node representing an email address, 7503 // address, or phone number 7504 private void overrideLoading(String url) { 7505 mCallbackProxy.uiOverrideUrlLoading(url); 7506 } 7507 7508 @Override 7509 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7510 // FIXME: If a subwindow is showing find, and the user touches the 7511 // background window, it can steal focus. 7512 if (mFindIsUp) return false; 7513 boolean result = false; 7514 if (inEditingMode()) { 7515 result = mWebTextView.requestFocus(direction, 7516 previouslyFocusedRect); 7517 } else { 7518 result = super.requestFocus(direction, previouslyFocusedRect); 7519 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7520 // For cases such as GMail, where we gain focus from a direction, 7521 // we want to move to the first available link. 7522 // FIXME: If there are no visible links, we may not want to 7523 int fakeKeyDirection = 0; 7524 switch(direction) { 7525 case View.FOCUS_UP: 7526 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7527 break; 7528 case View.FOCUS_DOWN: 7529 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7530 break; 7531 case View.FOCUS_LEFT: 7532 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7533 break; 7534 case View.FOCUS_RIGHT: 7535 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7536 break; 7537 default: 7538 return result; 7539 } 7540 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7541 navHandledKey(fakeKeyDirection, 1, true, 0); 7542 } 7543 } 7544 } 7545 return result; 7546 } 7547 7548 @Override 7549 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7550 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7551 7552 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7553 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7554 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7555 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7556 7557 int measuredHeight = heightSize; 7558 int measuredWidth = widthSize; 7559 7560 // Grab the content size from WebViewCore. 7561 int contentHeight = contentToViewDimension(mContentHeight); 7562 int contentWidth = contentToViewDimension(mContentWidth); 7563 7564// Log.d(LOGTAG, "------- measure " + heightMode); 7565 7566 if (heightMode != MeasureSpec.EXACTLY) { 7567 mHeightCanMeasure = true; 7568 measuredHeight = contentHeight; 7569 if (heightMode == MeasureSpec.AT_MOST) { 7570 // If we are larger than the AT_MOST height, then our height can 7571 // no longer be measured and we should scroll internally. 7572 if (measuredHeight > heightSize) { 7573 measuredHeight = heightSize; 7574 mHeightCanMeasure = false; 7575 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7576 } 7577 } 7578 } else { 7579 mHeightCanMeasure = false; 7580 } 7581 if (mNativeClass != 0) { 7582 nativeSetHeightCanMeasure(mHeightCanMeasure); 7583 } 7584 // For the width, always use the given size unless unspecified. 7585 if (widthMode == MeasureSpec.UNSPECIFIED) { 7586 mWidthCanMeasure = true; 7587 measuredWidth = contentWidth; 7588 } else { 7589 if (measuredWidth < contentWidth) { 7590 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7591 } 7592 mWidthCanMeasure = false; 7593 } 7594 7595 synchronized (this) { 7596 setMeasuredDimension(measuredWidth, measuredHeight); 7597 } 7598 } 7599 7600 @Override 7601 public boolean requestChildRectangleOnScreen(View child, 7602 Rect rect, 7603 boolean immediate) { 7604 if (mNativeClass == 0) { 7605 return false; 7606 } 7607 // don't scroll while in zoom animation. When it is done, we will adjust 7608 // the necessary components (e.g., WebTextView if it is in editing mode) 7609 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7610 return false; 7611 } 7612 7613 rect.offset(child.getLeft() - child.getScrollX(), 7614 child.getTop() - child.getScrollY()); 7615 7616 Rect content = new Rect(viewToContentX(mScrollX), 7617 viewToContentY(mScrollY), 7618 viewToContentX(mScrollX + getWidth() 7619 - getVerticalScrollbarWidth()), 7620 viewToContentY(mScrollY + getViewHeightWithTitle())); 7621 content = nativeSubtractLayers(content); 7622 int screenTop = contentToViewY(content.top); 7623 int screenBottom = contentToViewY(content.bottom); 7624 int height = screenBottom - screenTop; 7625 int scrollYDelta = 0; 7626 7627 if (rect.bottom > screenBottom) { 7628 int oneThirdOfScreenHeight = height / 3; 7629 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7630 // If the rectangle is too tall to fit in the bottom two thirds 7631 // of the screen, place it at the top. 7632 scrollYDelta = rect.top - screenTop; 7633 } else { 7634 // If the rectangle will still fit on screen, we want its 7635 // top to be in the top third of the screen. 7636 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7637 } 7638 } else if (rect.top < screenTop) { 7639 scrollYDelta = rect.top - screenTop; 7640 } 7641 7642 int screenLeft = contentToViewX(content.left); 7643 int screenRight = contentToViewX(content.right); 7644 int width = screenRight - screenLeft; 7645 int scrollXDelta = 0; 7646 7647 if (rect.right > screenRight && rect.left > screenLeft) { 7648 if (rect.width() > width) { 7649 scrollXDelta += (rect.left - screenLeft); 7650 } else { 7651 scrollXDelta += (rect.right - screenRight); 7652 } 7653 } else if (rect.left < screenLeft) { 7654 scrollXDelta -= (screenLeft - rect.left); 7655 } 7656 7657 if ((scrollYDelta | scrollXDelta) != 0) { 7658 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7659 } 7660 7661 return false; 7662 } 7663 7664 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7665 String replace, int newStart, int newEnd) { 7666 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7667 arg.mReplace = replace; 7668 arg.mNewStart = newStart; 7669 arg.mNewEnd = newEnd; 7670 mTextGeneration++; 7671 arg.mTextGeneration = mTextGeneration; 7672 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7673 } 7674 7675 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7676 // check if mWebViewCore has been destroyed 7677 if (mWebViewCore == null) { 7678 return; 7679 } 7680 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7681 arg.mEvent = event; 7682 arg.mCurrentText = currentText; 7683 // Increase our text generation number, and pass it to webcore thread 7684 mTextGeneration++; 7685 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7686 // WebKit's document state is not saved until about to leave the page. 7687 // To make sure the host application, like Browser, has the up to date 7688 // document state when it goes to background, we force to save the 7689 // document state. 7690 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7691 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7692 cursorData(), 1000); 7693 } 7694 7695 /** 7696 * @hide 7697 */ 7698 public synchronized WebViewCore getWebViewCore() { 7699 return mWebViewCore; 7700 } 7701 7702 /** 7703 * Used only by TouchEventQueue to store pending touch events. 7704 */ 7705 private static class QueuedTouch { 7706 long mSequence; 7707 MotionEvent mEvent; // Optional 7708 TouchEventData mTed; // Optional 7709 7710 QueuedTouch mNext; 7711 7712 public QueuedTouch set(TouchEventData ted) { 7713 mSequence = ted.mSequence; 7714 mTed = ted; 7715 mEvent = null; 7716 mNext = null; 7717 return this; 7718 } 7719 7720 public QueuedTouch set(MotionEvent ev, long sequence) { 7721 mEvent = MotionEvent.obtain(ev); 7722 mSequence = sequence; 7723 mTed = null; 7724 mNext = null; 7725 return this; 7726 } 7727 7728 public QueuedTouch add(QueuedTouch other) { 7729 if (other.mSequence < mSequence) { 7730 other.mNext = this; 7731 return other; 7732 } 7733 7734 QueuedTouch insertAt = this; 7735 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7736 insertAt = insertAt.mNext; 7737 } 7738 other.mNext = insertAt.mNext; 7739 insertAt.mNext = other; 7740 return this; 7741 } 7742 } 7743 7744 /** 7745 * WebView handles touch events asynchronously since some events must be passed to WebKit 7746 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7747 * of which path they take to ensure that no events are ever processed out of order 7748 * by WebView. 7749 */ 7750 private class TouchEventQueue { 7751 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7752 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7753 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7754 7755 // Events waiting to be processed. 7756 private QueuedTouch mTouchEventQueue; 7757 7758 // Known events that are waiting on a response before being enqueued. 7759 private QueuedTouch mPreQueue; 7760 7761 // Pool of QueuedTouch objects saved for later use. 7762 private QueuedTouch mQueuedTouchRecycleBin; 7763 private int mQueuedTouchRecycleCount; 7764 7765 private long mLastEventTime = Long.MAX_VALUE; 7766 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7767 7768 // milliseconds until we abandon hope of getting all of a previous gesture 7769 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7770 7771 private QueuedTouch obtainQueuedTouch() { 7772 if (mQueuedTouchRecycleBin != null) { 7773 QueuedTouch result = mQueuedTouchRecycleBin; 7774 mQueuedTouchRecycleBin = result.mNext; 7775 mQueuedTouchRecycleCount--; 7776 return result; 7777 } 7778 return new QueuedTouch(); 7779 } 7780 7781 /** 7782 * Allow events with any currently missing sequence numbers to be skipped in processing. 7783 */ 7784 public void ignoreCurrentlyMissingEvents() { 7785 mIgnoreUntilSequence = mNextTouchSequence; 7786 7787 // Run any events we have available and complete, pre-queued or otherwise. 7788 runQueuedAndPreQueuedEvents(); 7789 } 7790 7791 private void runQueuedAndPreQueuedEvents() { 7792 QueuedTouch qd = mPreQueue; 7793 boolean fromPreQueue = true; 7794 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7795 handleQueuedTouch(qd); 7796 QueuedTouch recycleMe = qd; 7797 if (fromPreQueue) { 7798 mPreQueue = qd.mNext; 7799 } else { 7800 mTouchEventQueue = qd.mNext; 7801 } 7802 recycleQueuedTouch(recycleMe); 7803 mLastHandledTouchSequence++; 7804 7805 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7806 long nextQueued = mTouchEventQueue != null ? 7807 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7808 fromPreQueue = nextPre < nextQueued; 7809 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7810 } 7811 } 7812 7813 /** 7814 * Add a TouchEventData to the pre-queue. 7815 * 7816 * An event in the pre-queue is an event that we know about that 7817 * has been sent to webkit, but that we haven't received back and 7818 * enqueued into the normal touch queue yet. If webkit ever times 7819 * out and we need to ignore currently missing events, we'll run 7820 * events from the pre-queue to patch the holes. 7821 * 7822 * @param ted TouchEventData to pre-queue 7823 */ 7824 public void preQueueTouchEventData(TouchEventData ted) { 7825 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7826 if (mPreQueue == null) { 7827 mPreQueue = newTouch; 7828 } else { 7829 QueuedTouch insertionPoint = mPreQueue; 7830 while (insertionPoint.mNext != null && 7831 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7832 insertionPoint = insertionPoint.mNext; 7833 } 7834 newTouch.mNext = insertionPoint.mNext; 7835 insertionPoint.mNext = newTouch; 7836 } 7837 } 7838 7839 private void recycleQueuedTouch(QueuedTouch qd) { 7840 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7841 qd.mNext = mQueuedTouchRecycleBin; 7842 mQueuedTouchRecycleBin = qd; 7843 mQueuedTouchRecycleCount++; 7844 } 7845 } 7846 7847 /** 7848 * Reset the touch event queue. This will dump any pending events 7849 * and reset the sequence numbering. 7850 */ 7851 public void reset() { 7852 mNextTouchSequence = Long.MIN_VALUE + 1; 7853 mLastHandledTouchSequence = Long.MIN_VALUE; 7854 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7855 while (mTouchEventQueue != null) { 7856 QueuedTouch recycleMe = mTouchEventQueue; 7857 mTouchEventQueue = mTouchEventQueue.mNext; 7858 recycleQueuedTouch(recycleMe); 7859 } 7860 while (mPreQueue != null) { 7861 QueuedTouch recycleMe = mPreQueue; 7862 mPreQueue = mPreQueue.mNext; 7863 recycleQueuedTouch(recycleMe); 7864 } 7865 } 7866 7867 /** 7868 * Return the next valid sequence number for tagging incoming touch events. 7869 * @return The next touch event sequence number 7870 */ 7871 public long nextTouchSequence() { 7872 return mNextTouchSequence++; 7873 } 7874 7875 /** 7876 * Enqueue a touch event in the form of TouchEventData. 7877 * The sequence number will be read from the mSequence field of the argument. 7878 * 7879 * If the touch event's sequence number is the next in line to be processed, it will 7880 * be handled before this method returns. Any subsequent events that have already 7881 * been queued will also be processed in their proper order. 7882 * 7883 * @param ted Touch data to be processed in order. 7884 * @return true if the event was processed before returning, false if it was just enqueued. 7885 */ 7886 public boolean enqueueTouchEvent(TouchEventData ted) { 7887 // Remove from the pre-queue if present 7888 QueuedTouch preQueue = mPreQueue; 7889 if (preQueue != null) { 7890 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7891 // if it was present in the pre-queue, and removed from the pre-queue itself. 7892 if (preQueue.mSequence == ted.mSequence) { 7893 mPreQueue = preQueue.mNext; 7894 } else { 7895 QueuedTouch prev = preQueue; 7896 preQueue = null; 7897 while (prev.mNext != null) { 7898 if (prev.mNext.mSequence == ted.mSequence) { 7899 preQueue = prev.mNext; 7900 prev.mNext = preQueue.mNext; 7901 break; 7902 } else { 7903 prev = prev.mNext; 7904 } 7905 } 7906 } 7907 } 7908 7909 if (ted.mSequence < mLastHandledTouchSequence) { 7910 // Stale event and we already moved on; drop it. (Should not be common.) 7911 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7912 " received from webcore; ignoring"); 7913 return false; 7914 } 7915 7916 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7917 return false; 7918 } 7919 7920 // dropStaleGestures above might have fast-forwarded us to 7921 // an event we have already. 7922 runNextQueuedEvents(); 7923 7924 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7925 if (preQueue != null) { 7926 recycleQueuedTouch(preQueue); 7927 preQueue = null; 7928 } 7929 handleQueuedTouchEventData(ted); 7930 7931 mLastHandledTouchSequence++; 7932 7933 // Do we have any more? Run them if so. 7934 runNextQueuedEvents(); 7935 } else { 7936 // Reuse the pre-queued object if we had it. 7937 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 7938 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7939 } 7940 return true; 7941 } 7942 7943 /** 7944 * Enqueue a touch event in the form of a MotionEvent from the framework. 7945 * 7946 * If the touch event's sequence number is the next in line to be processed, it will 7947 * be handled before this method returns. Any subsequent events that have already 7948 * been queued will also be processed in their proper order. 7949 * 7950 * @param ev MotionEvent to be processed in order 7951 */ 7952 public void enqueueTouchEvent(MotionEvent ev) { 7953 final long sequence = nextTouchSequence(); 7954 7955 if (dropStaleGestures(ev, sequence)) { 7956 return; 7957 } 7958 7959 // dropStaleGestures above might have fast-forwarded us to 7960 // an event we have already. 7961 runNextQueuedEvents(); 7962 7963 if (mLastHandledTouchSequence + 1 == sequence) { 7964 handleQueuedMotionEvent(ev); 7965 7966 mLastHandledTouchSequence++; 7967 7968 // Do we have any more? Run them if so. 7969 runNextQueuedEvents(); 7970 } else { 7971 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7972 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7973 } 7974 } 7975 7976 private void runNextQueuedEvents() { 7977 QueuedTouch qd = mTouchEventQueue; 7978 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7979 handleQueuedTouch(qd); 7980 QueuedTouch recycleMe = qd; 7981 qd = qd.mNext; 7982 recycleQueuedTouch(recycleMe); 7983 mLastHandledTouchSequence++; 7984 } 7985 mTouchEventQueue = qd; 7986 } 7987 7988 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7989 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7990 // This is to make sure that we don't attempt to process a tap 7991 // or long press when webkit takes too long to get back to us. 7992 // The movement will be properly confirmed when we process the 7993 // enqueued event later. 7994 final int dx = Math.round(ev.getX()) - mLastTouchX; 7995 final int dy = Math.round(ev.getY()) - mLastTouchY; 7996 if (dx * dx + dy * dy > mTouchSlopSquare) { 7997 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7998 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7999 } 8000 } 8001 8002 if (mTouchEventQueue == null) { 8003 return sequence <= mLastHandledTouchSequence; 8004 } 8005 8006 // If we have a new down event and it's been a while since the last event 8007 // we saw, catch up as best we can and keep going. 8008 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8009 long eventTime = ev.getEventTime(); 8010 long lastHandledEventTime = mLastEventTime; 8011 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8012 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8013 "Catching up."); 8014 runQueuedAndPreQueuedEvents(); 8015 8016 // Drop leftovers that we truly don't have. 8017 QueuedTouch qd = mTouchEventQueue; 8018 while (qd != null && qd.mSequence < sequence) { 8019 QueuedTouch recycleMe = qd; 8020 qd = qd.mNext; 8021 recycleQueuedTouch(recycleMe); 8022 } 8023 mTouchEventQueue = qd; 8024 mLastHandledTouchSequence = sequence - 1; 8025 } 8026 } 8027 8028 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8029 QueuedTouch qd = mTouchEventQueue; 8030 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8031 QueuedTouch recycleMe = qd; 8032 qd = qd.mNext; 8033 recycleQueuedTouch(recycleMe); 8034 } 8035 mTouchEventQueue = qd; 8036 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8037 } 8038 8039 if (mPreQueue != null) { 8040 // Drop stale prequeued events 8041 QueuedTouch qd = mPreQueue; 8042 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8043 QueuedTouch recycleMe = qd; 8044 qd = qd.mNext; 8045 recycleQueuedTouch(recycleMe); 8046 } 8047 mPreQueue = qd; 8048 } 8049 8050 return sequence <= mLastHandledTouchSequence; 8051 } 8052 8053 private void handleQueuedTouch(QueuedTouch qt) { 8054 if (qt.mTed != null) { 8055 handleQueuedTouchEventData(qt.mTed); 8056 } else { 8057 handleQueuedMotionEvent(qt.mEvent); 8058 qt.mEvent.recycle(); 8059 } 8060 } 8061 8062 private void handleQueuedMotionEvent(MotionEvent ev) { 8063 mLastEventTime = ev.getEventTime(); 8064 int action = ev.getActionMasked(); 8065 if (ev.getPointerCount() > 1) { // Multi-touch 8066 handleMultiTouchInWebView(ev); 8067 } else { 8068 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8069 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8070 // ScaleGestureDetector needs a consistent event stream to operate properly. 8071 // It won't take any action with fewer than two pointers, but it needs to 8072 // update internal bookkeeping state. 8073 detector.onTouchEvent(ev); 8074 } 8075 8076 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8077 } 8078 } 8079 8080 private void handleQueuedTouchEventData(TouchEventData ted) { 8081 if (ted.mMotionEvent != null) { 8082 mLastEventTime = ted.mMotionEvent.getEventTime(); 8083 } 8084 if (!ted.mReprocess) { 8085 if (ted.mAction == MotionEvent.ACTION_DOWN 8086 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8087 // if prevent default is called from WebCore, UI 8088 // will not handle the rest of the touch events any 8089 // more. 8090 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8091 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8092 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8093 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8094 // the return for the first ACTION_MOVE will decide 8095 // whether UI will handle touch or not. Currently no 8096 // support for alternating prevent default 8097 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8098 : PREVENT_DEFAULT_NO; 8099 } 8100 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8101 mTouchHighlightRegion.setEmpty(); 8102 } 8103 } else { 8104 if (ted.mPoints.length > 1) { // multi-touch 8105 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8106 mPreventDefault = PREVENT_DEFAULT_NO; 8107 handleMultiTouchInWebView(ted.mMotionEvent); 8108 } else { 8109 mPreventDefault = PREVENT_DEFAULT_YES; 8110 } 8111 return; 8112 } 8113 8114 // prevent default is not called in WebCore, so the 8115 // message needs to be reprocessed in UI 8116 if (!ted.mNativeResult) { 8117 // Following is for single touch. 8118 switch (ted.mAction) { 8119 case MotionEvent.ACTION_DOWN: 8120 mLastDeferTouchX = ted.mPointsInView[0].x; 8121 mLastDeferTouchY = ted.mPointsInView[0].y; 8122 mDeferTouchMode = TOUCH_INIT_MODE; 8123 break; 8124 case MotionEvent.ACTION_MOVE: { 8125 // no snapping in defer process 8126 int x = ted.mPointsInView[0].x; 8127 int y = ted.mPointsInView[0].y; 8128 8129 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8130 mDeferTouchMode = TOUCH_DRAG_MODE; 8131 mLastDeferTouchX = x; 8132 mLastDeferTouchY = y; 8133 startScrollingLayer(x, y); 8134 startDrag(); 8135 } 8136 int deltaX = pinLocX((int) (mScrollX 8137 + mLastDeferTouchX - x)) 8138 - mScrollX; 8139 int deltaY = pinLocY((int) (mScrollY 8140 + mLastDeferTouchY - y)) 8141 - mScrollY; 8142 doDrag(deltaX, deltaY); 8143 if (deltaX != 0) mLastDeferTouchX = x; 8144 if (deltaY != 0) mLastDeferTouchY = y; 8145 break; 8146 } 8147 case MotionEvent.ACTION_UP: 8148 case MotionEvent.ACTION_CANCEL: 8149 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8150 // no fling in defer process 8151 mScroller.springBack(mScrollX, mScrollY, 0, 8152 computeMaxScrollX(), 0, 8153 computeMaxScrollY()); 8154 invalidate(); 8155 WebViewCore.resumePriority(); 8156 WebViewCore.resumeUpdatePicture(mWebViewCore); 8157 } 8158 mDeferTouchMode = TOUCH_DONE_MODE; 8159 break; 8160 case WebViewCore.ACTION_DOUBLETAP: 8161 // doDoubleTap() needs mLastTouchX/Y as anchor 8162 mLastDeferTouchX = ted.mPointsInView[0].x; 8163 mLastDeferTouchY = ted.mPointsInView[0].y; 8164 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8165 mDeferTouchMode = TOUCH_DONE_MODE; 8166 break; 8167 case WebViewCore.ACTION_LONGPRESS: 8168 HitTestResult hitTest = getHitTestResult(); 8169 if (hitTest != null && hitTest.mType 8170 != HitTestResult.UNKNOWN_TYPE) { 8171 performLongClick(); 8172 } 8173 mDeferTouchMode = TOUCH_DONE_MODE; 8174 break; 8175 } 8176 } 8177 } 8178 } 8179 } 8180 8181 //------------------------------------------------------------------------- 8182 // Methods can be called from a separate thread, like WebViewCore 8183 // If it needs to call the View system, it has to send message. 8184 //------------------------------------------------------------------------- 8185 8186 /** 8187 * General handler to receive message coming from webkit thread 8188 */ 8189 class PrivateHandler extends Handler { 8190 @Override 8191 public void handleMessage(Message msg) { 8192 // exclude INVAL_RECT_MSG_ID since it is frequently output 8193 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8194 if (msg.what >= FIRST_PRIVATE_MSG_ID 8195 && msg.what <= LAST_PRIVATE_MSG_ID) { 8196 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8197 - FIRST_PRIVATE_MSG_ID]); 8198 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8199 && msg.what <= LAST_PACKAGE_MSG_ID) { 8200 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8201 - FIRST_PACKAGE_MSG_ID]); 8202 } else { 8203 Log.v(LOGTAG, Integer.toString(msg.what)); 8204 } 8205 } 8206 if (mWebViewCore == null) { 8207 // after WebView's destroy() is called, skip handling messages. 8208 return; 8209 } 8210 if (mBlockWebkitViewMessages 8211 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8212 // Blocking messages from webkit 8213 return; 8214 } 8215 switch (msg.what) { 8216 case REMEMBER_PASSWORD: { 8217 mDatabase.setUsernamePassword( 8218 msg.getData().getString("host"), 8219 msg.getData().getString("username"), 8220 msg.getData().getString("password")); 8221 ((Message) msg.obj).sendToTarget(); 8222 break; 8223 } 8224 case NEVER_REMEMBER_PASSWORD: { 8225 mDatabase.setUsernamePassword( 8226 msg.getData().getString("host"), null, null); 8227 ((Message) msg.obj).sendToTarget(); 8228 break; 8229 } 8230 case PREVENT_DEFAULT_TIMEOUT: { 8231 // if timeout happens, cancel it so that it won't block UI 8232 // to continue handling touch events 8233 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8234 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8235 || (msg.arg1 == MotionEvent.ACTION_MOVE 8236 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8237 cancelWebCoreTouchEvent( 8238 viewToContentX(mLastTouchX + mScrollX), 8239 viewToContentY(mLastTouchY + mScrollY), 8240 true); 8241 } 8242 break; 8243 } 8244 case SCROLL_SELECT_TEXT: { 8245 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8246 mSentAutoScrollMessage = false; 8247 break; 8248 } 8249 if (mScrollingLayer == 0) { 8250 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8251 } else { 8252 mScrollingLayerRect.left += mAutoScrollX; 8253 mScrollingLayerRect.top += mAutoScrollY; 8254 nativeScrollLayer(mScrollingLayer, 8255 mScrollingLayerRect.left, 8256 mScrollingLayerRect.top); 8257 invalidate(); 8258 } 8259 sendEmptyMessageDelayed( 8260 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8261 break; 8262 } 8263 case UPDATE_SELECTION: { 8264 if (mTouchMode == TOUCH_INIT_MODE 8265 || mTouchMode == TOUCH_SHORTPRESS_MODE 8266 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8267 updateSelection(); 8268 } 8269 break; 8270 } 8271 case SWITCH_TO_SHORTPRESS: { 8272 mInitialHitTestResult = null; // set by updateSelection() 8273 if (mTouchMode == TOUCH_INIT_MODE) { 8274 if (!getSettings().supportTouchOnly() 8275 && mPreventDefault != PREVENT_DEFAULT_YES) { 8276 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8277 updateSelection(); 8278 } else { 8279 // set to TOUCH_SHORTPRESS_MODE so that it won't 8280 // trigger double tap any more 8281 mTouchMode = TOUCH_SHORTPRESS_MODE; 8282 } 8283 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8284 mTouchMode = TOUCH_DONE_MODE; 8285 } 8286 break; 8287 } 8288 case SWITCH_TO_LONGPRESS: { 8289 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 8290 removeTouchHighlight(); 8291 } 8292 if (inFullScreenMode() || mDeferTouchProcess) { 8293 TouchEventData ted = new TouchEventData(); 8294 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8295 ted.mIds = new int[1]; 8296 ted.mIds[0] = 0; 8297 ted.mPoints = new Point[1]; 8298 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8299 viewToContentY(mLastTouchY + mScrollY)); 8300 ted.mPointsInView = new Point[1]; 8301 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8302 // metaState for long press is tricky. Should it be the 8303 // state when the press started or when the press was 8304 // released? Or some intermediary key state? For 8305 // simplicity for now, we don't set it. 8306 ted.mMetaState = 0; 8307 ted.mReprocess = mDeferTouchProcess; 8308 ted.mNativeLayer = nativeScrollableLayer( 8309 ted.mPoints[0].x, ted.mPoints[0].y, 8310 ted.mNativeLayerRect, null); 8311 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8312 mTouchEventQueue.preQueueTouchEventData(ted); 8313 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8314 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8315 mTouchMode = TOUCH_DONE_MODE; 8316 performLongClick(); 8317 } 8318 break; 8319 } 8320 case RELEASE_SINGLE_TAP: { 8321 doShortPress(); 8322 break; 8323 } 8324 case SCROLL_TO_MSG_ID: { 8325 // arg1 = animate, arg2 = onlyIfImeIsShowing 8326 // obj = Point(x, y) 8327 if (msg.arg2 == 1) { 8328 // This scroll is intended to bring the textfield into 8329 // view, but is only necessary if the IME is showing 8330 InputMethodManager imm = InputMethodManager.peekInstance(); 8331 if (imm == null || !imm.isAcceptingText() 8332 || (!imm.isActive(WebView.this) && (!inEditingMode() 8333 || !imm.isActive(mWebTextView)))) { 8334 break; 8335 } 8336 } 8337 final Point p = (Point) msg.obj; 8338 if (msg.arg1 == 1) { 8339 spawnContentScrollTo(p.x, p.y); 8340 } else { 8341 setContentScrollTo(p.x, p.y); 8342 } 8343 break; 8344 } 8345 case UPDATE_ZOOM_RANGE: { 8346 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8347 // mScrollX contains the new minPrefWidth 8348 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8349 break; 8350 } 8351 case REPLACE_BASE_CONTENT: { 8352 nativeReplaceBaseContent(msg.arg1); 8353 break; 8354 } 8355 case NEW_PICTURE_MSG_ID: { 8356 // called for new content 8357 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8358 setNewPicture(draw, true); 8359 break; 8360 } 8361 case WEBCORE_INITIALIZED_MSG_ID: 8362 // nativeCreate sets mNativeClass to a non-zero value 8363 String drawableDir = BrowserFrame.getRawResFilename( 8364 BrowserFrame.DRAWABLEDIR, mContext); 8365 nativeCreate(msg.arg1, drawableDir); 8366 if (mDelaySetPicture != null) { 8367 setNewPicture(mDelaySetPicture, true); 8368 mDelaySetPicture = null; 8369 } 8370 break; 8371 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8372 // Make sure that the textfield is currently focused 8373 // and representing the same node as the pointer. 8374 if (inEditingMode() && 8375 mWebTextView.isSameTextField(msg.arg1)) { 8376 if (msg.arg2 == mTextGeneration) { 8377 String text = (String) msg.obj; 8378 if (null == text) { 8379 text = ""; 8380 } 8381 mWebTextView.setTextAndKeepSelection(text); 8382 } 8383 } 8384 break; 8385 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8386 displaySoftKeyboard(true); 8387 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8388 case UPDATE_TEXT_SELECTION_MSG_ID: 8389 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8390 (WebViewCore.TextSelectionData) msg.obj); 8391 break; 8392 case FORM_DID_BLUR: 8393 if (inEditingMode() 8394 && mWebTextView.isSameTextField(msg.arg1)) { 8395 hideSoftKeyboard(); 8396 } 8397 break; 8398 case RETURN_LABEL: 8399 if (inEditingMode() 8400 && mWebTextView.isSameTextField(msg.arg1)) { 8401 mWebTextView.setHint((String) msg.obj); 8402 InputMethodManager imm 8403 = InputMethodManager.peekInstance(); 8404 // The hint is propagated to the IME in 8405 // onCreateInputConnection. If the IME is already 8406 // active, restart it so that its hint text is updated. 8407 if (imm != null && imm.isActive(mWebTextView)) { 8408 imm.restartInput(mWebTextView); 8409 } 8410 } 8411 break; 8412 case UNHANDLED_NAV_KEY: 8413 navHandledKey(msg.arg1, 1, false, 0); 8414 break; 8415 case UPDATE_TEXT_ENTRY_MSG_ID: 8416 // this is sent after finishing resize in WebViewCore. Make 8417 // sure the text edit box is still on the screen. 8418 if (inEditingMode() && nativeCursorIsTextInput()) { 8419 rebuildWebTextView(); 8420 } 8421 break; 8422 case CLEAR_TEXT_ENTRY: 8423 clearTextEntry(); 8424 break; 8425 case INVAL_RECT_MSG_ID: { 8426 Rect r = (Rect)msg.obj; 8427 if (r == null) { 8428 invalidate(); 8429 } else { 8430 // we need to scale r from content into view coords, 8431 // which viewInvalidate() does for us 8432 viewInvalidate(r.left, r.top, r.right, r.bottom); 8433 } 8434 break; 8435 } 8436 case REQUEST_FORM_DATA: 8437 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8438 if (mWebTextView.isSameTextField(msg.arg1)) { 8439 mWebTextView.setAdapterCustom(adapter); 8440 } 8441 break; 8442 case RESUME_WEBCORE_PRIORITY: 8443 WebViewCore.resumePriority(); 8444 WebViewCore.resumeUpdatePicture(mWebViewCore); 8445 break; 8446 8447 case LONG_PRESS_CENTER: 8448 // as this is shared by keydown and trackballdown, reset all 8449 // the states 8450 mGotCenterDown = false; 8451 mTrackballDown = false; 8452 performLongClick(); 8453 break; 8454 8455 case WEBCORE_NEED_TOUCH_EVENTS: 8456 mForwardTouchEvents = (msg.arg1 != 0); 8457 break; 8458 8459 case PREVENT_TOUCH_ID: 8460 if (inFullScreenMode()) { 8461 break; 8462 } 8463 TouchEventData ted = (TouchEventData) msg.obj; 8464 8465 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8466 // WebCore is responding to us; remove pending timeout. 8467 // It will be re-posted when needed. 8468 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8469 } 8470 break; 8471 8472 case REQUEST_KEYBOARD: 8473 if (msg.arg1 == 0) { 8474 hideSoftKeyboard(); 8475 } else { 8476 displaySoftKeyboard(false); 8477 } 8478 break; 8479 8480 case FIND_AGAIN: 8481 // Ignore if find has been dismissed. 8482 if (mFindIsUp && mFindCallback != null) { 8483 mFindCallback.findAll(); 8484 } 8485 break; 8486 8487 case DRAG_HELD_MOTIONLESS: 8488 mHeldMotionless = MOTIONLESS_TRUE; 8489 invalidate(); 8490 // fall through to keep scrollbars awake 8491 8492 case AWAKEN_SCROLL_BARS: 8493 if (mTouchMode == TOUCH_DRAG_MODE 8494 && mHeldMotionless == MOTIONLESS_TRUE) { 8495 awakenScrollBars(ViewConfiguration 8496 .getScrollDefaultDelay(), false); 8497 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8498 .obtainMessage(AWAKEN_SCROLL_BARS), 8499 ViewConfiguration.getScrollDefaultDelay()); 8500 } 8501 break; 8502 8503 case DO_MOTION_UP: 8504 doMotionUp(msg.arg1, msg.arg2); 8505 break; 8506 8507 case SCREEN_ON: 8508 setKeepScreenOn(msg.arg1 == 1); 8509 break; 8510 8511 case ENTER_FULLSCREEN_VIDEO: 8512 int layerId = msg.arg1; 8513 8514 String url = (String) msg.obj; 8515 if (mHTML5VideoViewProxy != null) { 8516 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8517 } 8518 break; 8519 8520 case SHOW_FULLSCREEN: { 8521 View view = (View) msg.obj; 8522 int orientation = msg.arg1; 8523 int npp = msg.arg2; 8524 8525 if (inFullScreenMode()) { 8526 Log.w(LOGTAG, "Should not have another full screen."); 8527 dismissFullScreenMode(); 8528 } 8529 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8530 mFullScreenHolder.setContentView(view); 8531 mFullScreenHolder.show(); 8532 8533 break; 8534 } 8535 case HIDE_FULLSCREEN: 8536 dismissFullScreenMode(); 8537 break; 8538 8539 case DOM_FOCUS_CHANGED: 8540 if (inEditingMode()) { 8541 nativeClearCursor(); 8542 rebuildWebTextView(); 8543 } 8544 break; 8545 8546 case SHOW_RECT_MSG_ID: { 8547 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8548 int x = mScrollX; 8549 int left = contentToViewX(data.mLeft); 8550 int width = contentToViewDimension(data.mWidth); 8551 int maxWidth = contentToViewDimension(data.mContentWidth); 8552 int viewWidth = getViewWidth(); 8553 if (width < viewWidth) { 8554 // center align 8555 x += left + width / 2 - mScrollX - viewWidth / 2; 8556 } else { 8557 x += (int) (left + data.mXPercentInDoc * width 8558 - mScrollX - data.mXPercentInView * viewWidth); 8559 } 8560 if (DebugFlags.WEB_VIEW) { 8561 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8562 width + ",maxWidth=" + maxWidth + 8563 ",viewWidth=" + viewWidth + ",x=" 8564 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8565 ",xPercentInView=" + data.mXPercentInView+ ")"); 8566 } 8567 // use the passing content width to cap x as the current 8568 // mContentWidth may not be updated yet 8569 x = Math.max(0, 8570 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8571 int top = contentToViewY(data.mTop); 8572 int height = contentToViewDimension(data.mHeight); 8573 int maxHeight = contentToViewDimension(data.mContentHeight); 8574 int viewHeight = getViewHeight(); 8575 int y = (int) (top + data.mYPercentInDoc * height - 8576 data.mYPercentInView * viewHeight); 8577 if (DebugFlags.WEB_VIEW) { 8578 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8579 height + ",maxHeight=" + maxHeight + 8580 ",viewHeight=" + viewHeight + ",y=" 8581 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8582 ",yPercentInView=" + data.mYPercentInView+ ")"); 8583 } 8584 // use the passing content height to cap y as the current 8585 // mContentHeight may not be updated yet 8586 y = Math.max(0, 8587 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8588 // We need to take into account the visible title height 8589 // when scrolling since y is an absolute view position. 8590 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8591 scrollTo(x, y); 8592 } 8593 break; 8594 8595 case CENTER_FIT_RECT: 8596 centerFitRect((Rect)msg.obj); 8597 break; 8598 8599 case SET_SCROLLBAR_MODES: 8600 mHorizontalScrollBarMode = msg.arg1; 8601 mVerticalScrollBarMode = msg.arg2; 8602 break; 8603 8604 case SELECTION_STRING_CHANGED: 8605 if (mAccessibilityInjector != null) { 8606 String selectionString = (String) msg.obj; 8607 mAccessibilityInjector.onSelectionStringChange(selectionString); 8608 } 8609 break; 8610 8611 case SET_TOUCH_HIGHLIGHT_RECTS: 8612 @SuppressWarnings("unchecked") 8613 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8614 setTouchHighlightRects(rects); 8615 break; 8616 8617 case SAVE_WEBARCHIVE_FINISHED: 8618 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8619 if (saveMessage.mCallback != null) { 8620 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8621 } 8622 break; 8623 8624 case SET_AUTOFILLABLE: 8625 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8626 if (mWebTextView != null) { 8627 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8628 rebuildWebTextView(); 8629 } 8630 break; 8631 8632 case AUTOFILL_COMPLETE: 8633 if (mWebTextView != null) { 8634 // Clear the WebTextView adapter when AutoFill finishes 8635 // so that the drop down gets cleared. 8636 mWebTextView.setAdapterCustom(null); 8637 } 8638 break; 8639 8640 case SELECT_AT: 8641 nativeSelectAt(msg.arg1, msg.arg2); 8642 break; 8643 8644 default: 8645 super.handleMessage(msg); 8646 break; 8647 } 8648 } 8649 } 8650 8651 private void setTouchHighlightRects(ArrayList<Rect> rects) { 8652 invalidate(mTouchHighlightRegion.getBounds()); 8653 mTouchHighlightRegion.setEmpty(); 8654 if (rects != null) { 8655 for (Rect rect : rects) { 8656 Rect viewRect = contentToViewRect(rect); 8657 // some sites, like stories in nytimes.com, set 8658 // mouse event handler in the top div. It is not 8659 // user friendly to highlight the div if it covers 8660 // more than half of the screen. 8661 if (viewRect.width() < getWidth() >> 1 8662 || viewRect.height() < getHeight() >> 1) { 8663 mTouchHighlightRegion.union(viewRect); 8664 } else { 8665 Log.w(LOGTAG, "Skip the huge selection rect:" 8666 + viewRect); 8667 } 8668 } 8669 invalidate(mTouchHighlightRegion.getBounds()); 8670 } 8671 } 8672 8673 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8674 * acceleration) */ 8675 protected void pageSwapCallback() { 8676 if (inEditingMode()) { 8677 didUpdateWebTextViewDimensions(ANYWHERE); 8678 } 8679 } 8680 8681 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8682 if (mNativeClass == 0) { 8683 if (mDelaySetPicture != null) { 8684 throw new IllegalStateException("Tried to setNewPicture with" 8685 + " a delay picture already set! (memory leak)"); 8686 } 8687 // Not initialized yet, delay set 8688 mDelaySetPicture = draw; 8689 return; 8690 } 8691 WebViewCore.ViewState viewState = draw.mViewState; 8692 boolean isPictureAfterFirstLayout = viewState != null; 8693 8694 if (updateBaseLayer) { 8695 // Request a callback on pageSwap (to reposition the webtextview) 8696 boolean registerPageSwapCallback = 8697 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8698 8699 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8700 getSettings().getShowVisualIndicator(), 8701 isPictureAfterFirstLayout, registerPageSwapCallback); 8702 } 8703 final Point viewSize = draw.mViewSize; 8704 if (isPictureAfterFirstLayout) { 8705 // Reset the last sent data here since dealing with new page. 8706 mLastWidthSent = 0; 8707 mZoomManager.onFirstLayout(draw); 8708 if (!mDrawHistory) { 8709 // Do not send the scroll event for this particular 8710 // scroll message. Note that a scroll event may 8711 // still be fired if the user scrolls before the 8712 // message can be handled. 8713 mSendScrollEvent = false; 8714 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 8715 mSendScrollEvent = true; 8716 8717 // As we are on a new page, remove the WebTextView. This 8718 // is necessary for page loads driven by webkit, and in 8719 // particular when the user was on a password field, so 8720 // the WebTextView was visible. 8721 clearTextEntry(); 8722 } 8723 } 8724 8725 // We update the layout (i.e. request a layout from the 8726 // view system) if the last view size that we sent to 8727 // WebCore matches the view size of the picture we just 8728 // received in the fixed dimension. 8729 final boolean updateLayout = viewSize.x == mLastWidthSent 8730 && viewSize.y == mLastHeightSent; 8731 // Don't send scroll event for picture coming from webkit, 8732 // since the new picture may cause a scroll event to override 8733 // the saved history scroll position. 8734 mSendScrollEvent = false; 8735 recordNewContentSize(draw.mContentSize.x, 8736 draw.mContentSize.y, updateLayout); 8737 mSendScrollEvent = true; 8738 if (DebugFlags.WEB_VIEW) { 8739 Rect b = draw.mInvalRegion.getBounds(); 8740 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8741 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8742 } 8743 invalidateContentRect(draw.mInvalRegion.getBounds()); 8744 8745 if (mPictureListener != null) { 8746 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8747 } 8748 8749 // update the zoom information based on the new picture 8750 mZoomManager.onNewPicture(draw); 8751 8752 if (draw.mFocusSizeChanged && inEditingMode()) { 8753 mFocusSizeChanged = true; 8754 } 8755 if (isPictureAfterFirstLayout) { 8756 mViewManager.postReadyToDrawAll(); 8757 } 8758 } 8759 8760 /** 8761 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8762 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8763 */ 8764 private void updateTextSelectionFromMessage(int nodePointer, 8765 int textGeneration, WebViewCore.TextSelectionData data) { 8766 if (inEditingMode() 8767 && mWebTextView.isSameTextField(nodePointer) 8768 && textGeneration == mTextGeneration) { 8769 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8770 } 8771 } 8772 8773 // Class used to use a dropdown for a <select> element 8774 private class InvokeListBox implements Runnable { 8775 // Whether the listbox allows multiple selection. 8776 private boolean mMultiple; 8777 // Passed in to a list with multiple selection to tell 8778 // which items are selected. 8779 private int[] mSelectedArray; 8780 // Passed in to a list with single selection to tell 8781 // where the initial selection is. 8782 private int mSelection; 8783 8784 private Container[] mContainers; 8785 8786 // Need these to provide stable ids to my ArrayAdapter, 8787 // which normally does not have stable ids. (Bug 1250098) 8788 private class Container extends Object { 8789 /** 8790 * Possible values for mEnabled. Keep in sync with OptionStatus in 8791 * WebViewCore.cpp 8792 */ 8793 final static int OPTGROUP = -1; 8794 final static int OPTION_DISABLED = 0; 8795 final static int OPTION_ENABLED = 1; 8796 8797 String mString; 8798 int mEnabled; 8799 int mId; 8800 8801 @Override 8802 public String toString() { 8803 return mString; 8804 } 8805 } 8806 8807 /** 8808 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8809 * and allow filtering. 8810 */ 8811 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8812 public MyArrayListAdapter() { 8813 super(mContext, 8814 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8815 com.android.internal.R.layout.webview_select_singlechoice, 8816 mContainers); 8817 } 8818 8819 @Override 8820 public View getView(int position, View convertView, 8821 ViewGroup parent) { 8822 // Always pass in null so that we will get a new CheckedTextView 8823 // Otherwise, an item which was previously used as an <optgroup> 8824 // element (i.e. has no check), could get used as an <option> 8825 // element, which needs a checkbox/radio, but it would not have 8826 // one. 8827 convertView = super.getView(position, null, parent); 8828 Container c = item(position); 8829 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8830 // ListView does not draw dividers between disabled and 8831 // enabled elements. Use a LinearLayout to provide dividers 8832 LinearLayout layout = new LinearLayout(mContext); 8833 layout.setOrientation(LinearLayout.VERTICAL); 8834 if (position > 0) { 8835 View dividerTop = new View(mContext); 8836 dividerTop.setBackgroundResource( 8837 android.R.drawable.divider_horizontal_bright); 8838 layout.addView(dividerTop); 8839 } 8840 8841 if (Container.OPTGROUP == c.mEnabled) { 8842 // Currently select_dialog_multichoice uses CheckedTextViews. 8843 // If that changes, the class cast will no longer be valid. 8844 if (mMultiple) { 8845 Assert.assertTrue(convertView instanceof CheckedTextView); 8846 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8847 } 8848 } else { 8849 // c.mEnabled == Container.OPTION_DISABLED 8850 // Draw the disabled element in a disabled state. 8851 convertView.setEnabled(false); 8852 } 8853 8854 layout.addView(convertView); 8855 if (position < getCount() - 1) { 8856 View dividerBottom = new View(mContext); 8857 dividerBottom.setBackgroundResource( 8858 android.R.drawable.divider_horizontal_bright); 8859 layout.addView(dividerBottom); 8860 } 8861 return layout; 8862 } 8863 return convertView; 8864 } 8865 8866 @Override 8867 public boolean hasStableIds() { 8868 // AdapterView's onChanged method uses this to determine whether 8869 // to restore the old state. Return false so that the old (out 8870 // of date) state does not replace the new, valid state. 8871 return false; 8872 } 8873 8874 private Container item(int position) { 8875 if (position < 0 || position >= getCount()) { 8876 return null; 8877 } 8878 return (Container) getItem(position); 8879 } 8880 8881 @Override 8882 public long getItemId(int position) { 8883 Container item = item(position); 8884 if (item == null) { 8885 return -1; 8886 } 8887 return item.mId; 8888 } 8889 8890 @Override 8891 public boolean areAllItemsEnabled() { 8892 return false; 8893 } 8894 8895 @Override 8896 public boolean isEnabled(int position) { 8897 Container item = item(position); 8898 if (item == null) { 8899 return false; 8900 } 8901 return Container.OPTION_ENABLED == item.mEnabled; 8902 } 8903 } 8904 8905 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8906 mMultiple = true; 8907 mSelectedArray = selected; 8908 8909 int length = array.length; 8910 mContainers = new Container[length]; 8911 for (int i = 0; i < length; i++) { 8912 mContainers[i] = new Container(); 8913 mContainers[i].mString = array[i]; 8914 mContainers[i].mEnabled = enabled[i]; 8915 mContainers[i].mId = i; 8916 } 8917 } 8918 8919 private InvokeListBox(String[] array, int[] enabled, int selection) { 8920 mSelection = selection; 8921 mMultiple = false; 8922 8923 int length = array.length; 8924 mContainers = new Container[length]; 8925 for (int i = 0; i < length; i++) { 8926 mContainers[i] = new Container(); 8927 mContainers[i].mString = array[i]; 8928 mContainers[i].mEnabled = enabled[i]; 8929 mContainers[i].mId = i; 8930 } 8931 } 8932 8933 /* 8934 * Whenever the data set changes due to filtering, this class ensures 8935 * that the checked item remains checked. 8936 */ 8937 private class SingleDataSetObserver extends DataSetObserver { 8938 private long mCheckedId; 8939 private ListView mListView; 8940 private Adapter mAdapter; 8941 8942 /* 8943 * Create a new observer. 8944 * @param id The ID of the item to keep checked. 8945 * @param l ListView for getting and clearing the checked states 8946 * @param a Adapter for getting the IDs 8947 */ 8948 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8949 mCheckedId = id; 8950 mListView = l; 8951 mAdapter = a; 8952 } 8953 8954 @Override 8955 public void onChanged() { 8956 // The filter may have changed which item is checked. Find the 8957 // item that the ListView thinks is checked. 8958 int position = mListView.getCheckedItemPosition(); 8959 long id = mAdapter.getItemId(position); 8960 if (mCheckedId != id) { 8961 // Clear the ListView's idea of the checked item, since 8962 // it is incorrect 8963 mListView.clearChoices(); 8964 // Search for mCheckedId. If it is in the filtered list, 8965 // mark it as checked 8966 int count = mAdapter.getCount(); 8967 for (int i = 0; i < count; i++) { 8968 if (mAdapter.getItemId(i) == mCheckedId) { 8969 mListView.setItemChecked(i, true); 8970 break; 8971 } 8972 } 8973 } 8974 } 8975 } 8976 8977 public void run() { 8978 final ListView listView = (ListView) LayoutInflater.from(mContext) 8979 .inflate(com.android.internal.R.layout.select_dialog, null); 8980 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8981 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8982 .setView(listView).setCancelable(true) 8983 .setInverseBackgroundForced(true); 8984 8985 if (mMultiple) { 8986 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8987 public void onClick(DialogInterface dialog, int which) { 8988 mWebViewCore.sendMessage( 8989 EventHub.LISTBOX_CHOICES, 8990 adapter.getCount(), 0, 8991 listView.getCheckedItemPositions()); 8992 }}); 8993 b.setNegativeButton(android.R.string.cancel, 8994 new DialogInterface.OnClickListener() { 8995 public void onClick(DialogInterface dialog, int which) { 8996 mWebViewCore.sendMessage( 8997 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8998 }}); 8999 } 9000 mListBoxDialog = b.create(); 9001 listView.setAdapter(adapter); 9002 listView.setFocusableInTouchMode(true); 9003 // There is a bug (1250103) where the checks in a ListView with 9004 // multiple items selected are associated with the positions, not 9005 // the ids, so the items do not properly retain their checks when 9006 // filtered. Do not allow filtering on multiple lists until 9007 // that bug is fixed. 9008 9009 listView.setTextFilterEnabled(!mMultiple); 9010 if (mMultiple) { 9011 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9012 int length = mSelectedArray.length; 9013 for (int i = 0; i < length; i++) { 9014 listView.setItemChecked(mSelectedArray[i], true); 9015 } 9016 } else { 9017 listView.setOnItemClickListener(new OnItemClickListener() { 9018 public void onItemClick(AdapterView<?> parent, View v, 9019 int position, long id) { 9020 // Rather than sending the message right away, send it 9021 // after the page regains focus. 9022 mListBoxMessage = Message.obtain(null, 9023 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9024 mListBoxDialog.dismiss(); 9025 mListBoxDialog = null; 9026 } 9027 }); 9028 if (mSelection != -1) { 9029 listView.setSelection(mSelection); 9030 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9031 listView.setItemChecked(mSelection, true); 9032 DataSetObserver observer = new SingleDataSetObserver( 9033 adapter.getItemId(mSelection), listView, adapter); 9034 adapter.registerDataSetObserver(observer); 9035 } 9036 } 9037 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9038 public void onCancel(DialogInterface dialog) { 9039 mWebViewCore.sendMessage( 9040 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9041 mListBoxDialog = null; 9042 } 9043 }); 9044 mListBoxDialog.show(); 9045 } 9046 } 9047 9048 private Message mListBoxMessage; 9049 9050 /* 9051 * Request a dropdown menu for a listbox with multiple selection. 9052 * 9053 * @param array Labels for the listbox. 9054 * @param enabledArray State for each element in the list. See static 9055 * integers in Container class. 9056 * @param selectedArray Which positions are initally selected. 9057 */ 9058 void requestListBox(String[] array, int[] enabledArray, int[] 9059 selectedArray) { 9060 mPrivateHandler.post( 9061 new InvokeListBox(array, enabledArray, selectedArray)); 9062 } 9063 9064 /* 9065 * Request a dropdown menu for a listbox with single selection or a single 9066 * <select> element. 9067 * 9068 * @param array Labels for the listbox. 9069 * @param enabledArray State for each element in the list. See static 9070 * integers in Container class. 9071 * @param selection Which position is initally selected. 9072 */ 9073 void requestListBox(String[] array, int[] enabledArray, int selection) { 9074 mPrivateHandler.post( 9075 new InvokeListBox(array, enabledArray, selection)); 9076 } 9077 9078 // called by JNI 9079 private void sendMoveFocus(int frame, int node) { 9080 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9081 new WebViewCore.CursorData(frame, node, 0, 0)); 9082 } 9083 9084 // called by JNI 9085 private void sendMoveMouse(int frame, int node, int x, int y) { 9086 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9087 new WebViewCore.CursorData(frame, node, x, y)); 9088 } 9089 9090 /* 9091 * Send a mouse move event to the webcore thread. 9092 * 9093 * @param removeFocus Pass true to remove the WebTextView, if present. 9094 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9095 * called by JNI 9096 */ 9097 @SuppressWarnings("unused") 9098 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9099 if (removeFocus) { 9100 clearTextEntry(); 9101 } 9102 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9103 stopPaintingCaret ? 1 : 0, 0, 9104 cursorData()); 9105 } 9106 9107 /** 9108 * Called by JNI to send a message to the webcore thread that the user 9109 * touched the webpage. 9110 * @param touchGeneration Generation number of the touch, to ignore touches 9111 * after a new one has been generated. 9112 * @param frame Pointer to the frame holding the node that was touched. 9113 * @param node Pointer to the node touched. 9114 * @param x x-position of the touch. 9115 * @param y y-position of the touch. 9116 */ 9117 private void sendMotionUp(int touchGeneration, 9118 int frame, int node, int x, int y) { 9119 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9120 touchUpData.mMoveGeneration = touchGeneration; 9121 touchUpData.mFrame = frame; 9122 touchUpData.mNode = node; 9123 touchUpData.mX = x; 9124 touchUpData.mY = y; 9125 touchUpData.mNativeLayer = nativeScrollableLayer( 9126 x, y, touchUpData.mNativeLayerRect, null); 9127 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9128 } 9129 9130 9131 private int getScaledMaxXScroll() { 9132 int width; 9133 if (mHeightCanMeasure == false) { 9134 width = getViewWidth() / 4; 9135 } else { 9136 Rect visRect = new Rect(); 9137 calcOurVisibleRect(visRect); 9138 width = visRect.width() / 2; 9139 } 9140 // FIXME the divisor should be retrieved from somewhere 9141 return viewToContentX(width); 9142 } 9143 9144 private int getScaledMaxYScroll() { 9145 int height; 9146 if (mHeightCanMeasure == false) { 9147 height = getViewHeight() / 4; 9148 } else { 9149 Rect visRect = new Rect(); 9150 calcOurVisibleRect(visRect); 9151 height = visRect.height() / 2; 9152 } 9153 // FIXME the divisor should be retrieved from somewhere 9154 // the closest thing today is hard-coded into ScrollView.java 9155 // (from ScrollView.java, line 363) int maxJump = height/2; 9156 return Math.round(height * mZoomManager.getInvScale()); 9157 } 9158 9159 /** 9160 * Called by JNI to invalidate view 9161 */ 9162 private void viewInvalidate() { 9163 invalidate(); 9164 } 9165 9166 /** 9167 * Pass the key directly to the page. This assumes that 9168 * nativePageShouldHandleShiftAndArrows() returned true. 9169 */ 9170 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9171 int keyEventAction; 9172 int eventHubAction; 9173 if (down) { 9174 keyEventAction = KeyEvent.ACTION_DOWN; 9175 eventHubAction = EventHub.KEY_DOWN; 9176 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9177 } else { 9178 keyEventAction = KeyEvent.ACTION_UP; 9179 eventHubAction = EventHub.KEY_UP; 9180 } 9181 9182 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9183 1, (metaState & KeyEvent.META_SHIFT_ON) 9184 | (metaState & KeyEvent.META_ALT_ON) 9185 | (metaState & KeyEvent.META_SYM_ON) 9186 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9187 mWebViewCore.sendMessage(eventHubAction, event); 9188 } 9189 9190 // return true if the key was handled 9191 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9192 long time) { 9193 if (mNativeClass == 0) { 9194 return false; 9195 } 9196 mInitialHitTestResult = null; 9197 mLastCursorTime = time; 9198 mLastCursorBounds = nativeGetCursorRingBounds(); 9199 boolean keyHandled 9200 = nativeMoveCursor(keyCode, count, noScroll) == false; 9201 if (DebugFlags.WEB_VIEW) { 9202 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9203 + " mLastCursorTime=" + mLastCursorTime 9204 + " handled=" + keyHandled); 9205 } 9206 if (keyHandled == false) { 9207 return keyHandled; 9208 } 9209 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9210 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9211 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9212 // set last touch so that context menu related functions will work 9213 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9214 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9215 if (mHeightCanMeasure == false) { 9216 return keyHandled; 9217 } 9218 Rect visRect = new Rect(); 9219 calcOurVisibleRect(visRect); 9220 Rect outset = new Rect(visRect); 9221 int maxXScroll = visRect.width() / 2; 9222 int maxYScroll = visRect.height() / 2; 9223 outset.inset(-maxXScroll, -maxYScroll); 9224 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9225 return keyHandled; 9226 } 9227 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9228 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9229 maxXScroll); 9230 if (maxH > 0) { 9231 pinScrollBy(maxH, 0, true, 0); 9232 } else { 9233 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9234 -maxXScroll); 9235 if (maxH < 0) { 9236 pinScrollBy(maxH, 0, true, 0); 9237 } 9238 } 9239 if (mLastCursorBounds.isEmpty()) return keyHandled; 9240 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9241 return keyHandled; 9242 } 9243 if (DebugFlags.WEB_VIEW) { 9244 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9245 + contentCursorRingBounds); 9246 } 9247 requestRectangleOnScreen(viewCursorRingBounds); 9248 return keyHandled; 9249 } 9250 9251 /** 9252 * @return Whether accessibility script has been injected. 9253 */ 9254 private boolean accessibilityScriptInjected() { 9255 // TODO: Maybe the injected script should announce its presence in 9256 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9257 // will check that as one of the conditions it looks for 9258 return mAccessibilityScriptInjected; 9259 } 9260 9261 /** 9262 * Set the background color. It's white by default. Pass 9263 * zero to make the view transparent. 9264 * @param color the ARGB color described by Color.java 9265 */ 9266 @Override 9267 public void setBackgroundColor(int color) { 9268 mBackgroundColor = color; 9269 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9270 } 9271 9272 /** 9273 * @deprecated This method is now obsolete. 9274 */ 9275 @Deprecated 9276 public void debugDump() { 9277 checkThread(); 9278 nativeDebugDump(); 9279 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9280 } 9281 9282 /** 9283 * Draw the HTML page into the specified canvas. This call ignores any 9284 * view-specific zoom, scroll offset, or other changes. It does not draw 9285 * any view-specific chrome, such as progress or URL bars. 9286 * 9287 * @hide only needs to be accessible to Browser and testing 9288 */ 9289 public void drawPage(Canvas canvas) { 9290 nativeDraw(canvas, 0, 0, false); 9291 } 9292 9293 /** 9294 * Enable the communication b/t the webView and VideoViewProxy 9295 * 9296 * @hide only used by the Browser 9297 */ 9298 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9299 mHTML5VideoViewProxy = proxy; 9300 } 9301 9302 /** 9303 * Set the time to wait between passing touches to WebCore. See also the 9304 * TOUCH_SENT_INTERVAL member for further discussion. 9305 * 9306 * @hide This is only used by the DRT test application. 9307 */ 9308 public void setTouchInterval(int interval) { 9309 mCurrentTouchInterval = interval; 9310 } 9311 9312 /** 9313 * Update our cache with updatedText. 9314 * @param updatedText The new text to put in our cache. 9315 * @hide 9316 */ 9317 protected void updateCachedTextfield(String updatedText) { 9318 // Also place our generation number so that when we look at the cache 9319 // we recognize that it is up to date. 9320 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9321 } 9322 9323 /*package*/ void autoFillForm(int autoFillQueryId) { 9324 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9325 } 9326 9327 /* package */ ViewManager getViewManager() { 9328 return mViewManager; 9329 } 9330 9331 private static void checkThread() { 9332 if (Looper.myLooper() != Looper.getMainLooper()) { 9333 Throwable throwable = new Throwable( 9334 "Warning: A WebView method was called on thread '" + 9335 Thread.currentThread().getName() + "'. " + 9336 "All WebView methods must be called on the UI thread. " + 9337 "Future versions of WebView may not support use on other threads."); 9338 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9339 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9340 } 9341 } 9342 9343 /** @hide send content invalidate */ 9344 protected void contentInvalidateAll() { 9345 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9346 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9347 } 9348 } 9349 9350 /** @hide call pageSwapCallback upon next page swap */ 9351 protected void registerPageSwapCallback() { 9352 nativeRegisterPageSwapCallback(); 9353 } 9354 9355 /** 9356 * Begin collecting per-tile profiling data 9357 * 9358 * @hide only used by profiling tests 9359 */ 9360 public void tileProfilingStart() { 9361 nativeTileProfilingStart(); 9362 } 9363 /** 9364 * Return per-tile profiling data 9365 * 9366 * @hide only used by profiling tests 9367 */ 9368 public float tileProfilingStop() { 9369 return nativeTileProfilingStop(); 9370 } 9371 9372 /** @hide only used by profiling tests */ 9373 public void tileProfilingClear() { 9374 nativeTileProfilingClear(); 9375 } 9376 /** @hide only used by profiling tests */ 9377 public int tileProfilingNumFrames() { 9378 return nativeTileProfilingNumFrames(); 9379 } 9380 /** @hide only used by profiling tests */ 9381 public int tileProfilingNumTilesInFrame(int frame) { 9382 return nativeTileProfilingNumTilesInFrame(frame); 9383 } 9384 /** @hide only used by profiling tests */ 9385 public int tileProfilingGetInt(int frame, int tile, String key) { 9386 return nativeTileProfilingGetInt(frame, tile, key); 9387 } 9388 /** @hide only used by profiling tests */ 9389 public float tileProfilingGetFloat(int frame, int tile, String key) { 9390 return nativeTileProfilingGetFloat(frame, tile, key); 9391 } 9392 9393 /** 9394 * Helper method to deal with differences between hardware and software rendering 9395 */ 9396 private void recordButtons(Canvas canvas, boolean focus, boolean pressed, 9397 boolean inval) { 9398 boolean isHardwareAccel = canvas != null 9399 ? canvas.isHardwareAccelerated() 9400 : isHardwareAccelerated(); 9401 if (isHardwareAccel) { 9402 // We never want to change button state if we are hardware accelerated, 9403 // but we DO want to invalidate as necessary so that the GL ring 9404 // can be drawn 9405 nativeRecordButtons(false, false, inval); 9406 } else { 9407 nativeRecordButtons(focus, pressed, inval); 9408 } 9409 } 9410 9411 private native int nativeCacheHitFramePointer(); 9412 private native boolean nativeCacheHitIsPlugin(); 9413 private native Rect nativeCacheHitNodeBounds(); 9414 private native int nativeCacheHitNodePointer(); 9415 /* package */ native void nativeClearCursor(); 9416 private native void nativeCreate(int ptr, String drawableDir); 9417 private native int nativeCursorFramePointer(); 9418 private native Rect nativeCursorNodeBounds(); 9419 private native int nativeCursorNodePointer(); 9420 private native boolean nativeCursorIntersects(Rect visibleRect); 9421 private native boolean nativeCursorIsAnchor(); 9422 private native boolean nativeCursorIsTextInput(); 9423 private native Point nativeCursorPosition(); 9424 private native String nativeCursorText(); 9425 /** 9426 * Returns true if the native cursor node says it wants to handle key events 9427 * (ala plugins). This can only be called if mNativeClass is non-zero! 9428 */ 9429 private native boolean nativeCursorWantsKeyEvents(); 9430 private native void nativeDebugDump(); 9431 private native void nativeDestroy(); 9432 9433 /** 9434 * Draw the picture set with a background color and extra. If 9435 * "splitIfNeeded" is true and the return value is not 0, the return value 9436 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9437 * native allocation can be freed. 9438 */ 9439 private native int nativeDraw(Canvas canvas, int color, int extra, 9440 boolean splitIfNeeded); 9441 private native void nativeDumpDisplayTree(String urlOrNull); 9442 private native boolean nativeEvaluateLayersAnimations(); 9443 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 9444 float scale, int extras); 9445 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 9446 private native void nativeExtendSelection(int x, int y); 9447 private native int nativeFindAll(String findLower, String findUpper, 9448 boolean sameAsLastSearch); 9449 private native void nativeFindNext(boolean forward); 9450 /* package */ native int nativeFocusCandidateFramePointer(); 9451 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9452 /* package */ native boolean nativeFocusCandidateIsPassword(); 9453 private native boolean nativeFocusCandidateIsRtlText(); 9454 private native boolean nativeFocusCandidateIsTextInput(); 9455 /* package */ native int nativeFocusCandidateMaxLength(); 9456 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9457 /* package */ native String nativeFocusCandidateName(); 9458 private native Rect nativeFocusCandidateNodeBounds(); 9459 /** 9460 * @return A Rect with left, top, right, bottom set to the corresponding 9461 * padding values in the focus candidate, if it is a textfield/textarea with 9462 * a style. Otherwise return null. This is not actually a rectangle; Rect 9463 * is being used to pass four integers. 9464 */ 9465 private native Rect nativeFocusCandidatePaddingRect(); 9466 /* package */ native int nativeFocusCandidatePointer(); 9467 private native String nativeFocusCandidateText(); 9468 /* package */ native float nativeFocusCandidateTextSize(); 9469 /* package */ native int nativeFocusCandidateLineHeight(); 9470 /** 9471 * Returns an integer corresponding to WebView.cpp::type. 9472 * See WebTextView.setType() 9473 */ 9474 private native int nativeFocusCandidateType(); 9475 private native boolean nativeFocusIsPlugin(); 9476 private native Rect nativeFocusNodeBounds(); 9477 /* package */ native int nativeFocusNodePointer(); 9478 private native Rect nativeGetCursorRingBounds(); 9479 private native String nativeGetSelection(); 9480 private native boolean nativeHasCursorNode(); 9481 private native boolean nativeHasFocusNode(); 9482 private native void nativeHideCursor(); 9483 private native boolean nativeHitSelection(int x, int y); 9484 private native String nativeImageURI(int x, int y); 9485 private native void nativeInstrumentReport(); 9486 private native Rect nativeLayerBounds(int layer); 9487 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9488 // return true if the page has been scrolled 9489 private native boolean nativeMotionUp(int x, int y, int slop); 9490 // returns false if it handled the key 9491 private native boolean nativeMoveCursor(int keyCode, int count, 9492 boolean noScroll); 9493 private native int nativeMoveGeneration(); 9494 private native void nativeMoveSelection(int x, int y); 9495 /** 9496 * @return true if the page should get the shift and arrow keys, rather 9497 * than select text/navigation. 9498 * 9499 * If the focus is a plugin, or if the focus and cursor match and are 9500 * a contentEditable element, then the page should handle these keys. 9501 */ 9502 private native boolean nativePageShouldHandleShiftAndArrows(); 9503 private native boolean nativePointInNavCache(int x, int y, int slop); 9504 // Like many other of our native methods, you must make sure that 9505 // mNativeClass is not null before calling this method. 9506 private native void nativeRecordButtons(boolean focused, 9507 boolean pressed, boolean invalidate); 9508 private native void nativeResetSelection(); 9509 private native Point nativeSelectableText(); 9510 private native void nativeSelectAll(); 9511 private native void nativeSelectBestAt(Rect rect); 9512 private native void nativeSelectAt(int x, int y); 9513 private native int nativeSelectionX(); 9514 private native int nativeSelectionY(); 9515 private native int nativeFindIndex(); 9516 private native void nativeSetExtendSelection(); 9517 private native void nativeSetFindIsEmpty(); 9518 private native void nativeSetFindIsUp(boolean isUp); 9519 private native void nativeSetHeightCanMeasure(boolean measure); 9520 private native void nativeSetBaseLayer(int layer, Region invalRegion, 9521 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9522 boolean registerPageSwapCallback); 9523 private native int nativeGetBaseLayer(); 9524 private native void nativeShowCursorTimed(); 9525 private native void nativeReplaceBaseContent(int content); 9526 private native void nativeCopyBaseContentToPicture(Picture pict); 9527 private native boolean nativeHasContent(); 9528 private native void nativeSetSelectionPointer(boolean set, 9529 float scale, int x, int y); 9530 private native boolean nativeStartSelection(int x, int y); 9531 private native void nativeStopGL(); 9532 private native Rect nativeSubtractLayers(Rect content); 9533 private native int nativeTextGeneration(); 9534 private native void nativeRegisterPageSwapCallback(); 9535 private native void nativeTileProfilingStart(); 9536 private native float nativeTileProfilingStop(); 9537 private native void nativeTileProfilingClear(); 9538 private native int nativeTileProfilingNumFrames(); 9539 private native int nativeTileProfilingNumTilesInFrame(int frame); 9540 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9541 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9542 // Never call this version except by updateCachedTextfield(String) - 9543 // we always want to pass in our generation number. 9544 private native void nativeUpdateCachedTextfield(String updatedText, 9545 int generation); 9546 private native boolean nativeWordSelection(int x, int y); 9547 // return NO_LEFTEDGE means failure. 9548 static final int NO_LEFTEDGE = -1; 9549 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9550 9551 private native void nativeUseHardwareAccelSkia(boolean enabled); 9552 9553 // Returns a pointer to the scrollable LayerAndroid at the given point. 9554 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9555 Rect scrollBounds); 9556 /** 9557 * Scroll the specified layer. 9558 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9559 * @param newX Destination x position to which to scroll. 9560 * @param newY Destination y position to which to scroll. 9561 * @return True if the layer is successfully scrolled. 9562 */ 9563 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9564 private native void nativeSetIsScrolling(boolean isScrolling); 9565 private native int nativeGetBackgroundColor(); 9566 native boolean nativeSetProperty(String key, String value); 9567 native String nativeGetProperty(String key); 9568 private native void nativeGetTextSelectionRegion(Region region); 9569 /** 9570 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9571 */ 9572 private static native void nativeOnTrimMemory(int level); 9573} 9574