WebView.java revision d9ee72fddb8be40e414a831fb80458dc48699613
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), 0); 1487 } 1488 1489 /* 1490 * Return the height of the view where the content of WebView should render 1491 * to. Note that this excludes mTitleBar, if there is one. 1492 * Note: this can be called from WebCoreThread. 1493 */ 1494 /* package */ int getViewHeight() { 1495 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1496 } 1497 1498 int getViewHeightWithTitle() { 1499 int height = getHeight(); 1500 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1501 height -= getHorizontalScrollbarHeight(); 1502 } 1503 return height; 1504 } 1505 1506 /** 1507 * @return The SSL certificate for the main top-level page or null if 1508 * there is no certificate (the site is not secure). 1509 */ 1510 public SslCertificate getCertificate() { 1511 checkThread(); 1512 return mCertificate; 1513 } 1514 1515 /** 1516 * Sets the SSL certificate for the main top-level page. 1517 */ 1518 public void setCertificate(SslCertificate certificate) { 1519 checkThread(); 1520 if (DebugFlags.WEB_VIEW) { 1521 Log.v(LOGTAG, "setCertificate=" + certificate); 1522 } 1523 // here, the certificate can be null (if the site is not secure) 1524 mCertificate = certificate; 1525 } 1526 1527 //------------------------------------------------------------------------- 1528 // Methods called by activity 1529 //------------------------------------------------------------------------- 1530 1531 /** 1532 * Save the username and password for a particular host in the WebView's 1533 * internal database. 1534 * @param host The host that required the credentials. 1535 * @param username The username for the given host. 1536 * @param password The password for the given host. 1537 */ 1538 public void savePassword(String host, String username, String password) { 1539 checkThread(); 1540 mDatabase.setUsernamePassword(host, username, password); 1541 } 1542 1543 /** 1544 * Set the HTTP authentication credentials for a given host and realm. 1545 * 1546 * @param host The host for the credentials. 1547 * @param realm The realm for the credentials. 1548 * @param username The username for the password. If it is null, it means 1549 * password can't be saved. 1550 * @param password The password 1551 */ 1552 public void setHttpAuthUsernamePassword(String host, String realm, 1553 String username, String password) { 1554 checkThread(); 1555 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1556 } 1557 1558 /** 1559 * Retrieve the HTTP authentication username and password for a given 1560 * host & realm pair 1561 * 1562 * @param host The host for which the credentials apply. 1563 * @param realm The realm for which the credentials apply. 1564 * @return String[] if found, String[0] is username, which can be null and 1565 * String[1] is password. Return null if it can't find anything. 1566 */ 1567 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1568 checkThread(); 1569 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1570 } 1571 1572 /** 1573 * Remove Find or Select ActionModes, if active. 1574 */ 1575 private void clearActionModes() { 1576 if (mSelectCallback != null) { 1577 mSelectCallback.finish(); 1578 } 1579 if (mFindCallback != null) { 1580 mFindCallback.finish(); 1581 } 1582 } 1583 1584 /** 1585 * Called to clear state when moving from one page to another, or changing 1586 * in some other way that makes elements associated with the current page 1587 * (such as WebTextView or ActionModes) no longer relevant. 1588 */ 1589 private void clearHelpers() { 1590 clearTextEntry(); 1591 clearActionModes(); 1592 dismissFullScreenMode(); 1593 } 1594 1595 /** 1596 * Destroy the internal state of the WebView. This method should be called 1597 * after the WebView has been removed from the view system. No other 1598 * methods may be called on a WebView after destroy. 1599 */ 1600 public void destroy() { 1601 checkThread(); 1602 destroyImpl(); 1603 } 1604 1605 private void destroyImpl() { 1606 clearHelpers(); 1607 if (mListBoxDialog != null) { 1608 mListBoxDialog.dismiss(); 1609 mListBoxDialog = null; 1610 } 1611 if (mNativeClass != 0) nativeStopGL(); 1612 if (mWebViewCore != null) { 1613 // Set the handlers to null before destroying WebViewCore so no 1614 // more messages will be posted. 1615 mCallbackProxy.setWebViewClient(null); 1616 mCallbackProxy.setWebChromeClient(null); 1617 // Tell WebViewCore to destroy itself 1618 synchronized (this) { 1619 WebViewCore webViewCore = mWebViewCore; 1620 mWebViewCore = null; // prevent using partial webViewCore 1621 webViewCore.destroy(); 1622 } 1623 // Remove any pending messages that might not be serviced yet. 1624 mPrivateHandler.removeCallbacksAndMessages(null); 1625 mCallbackProxy.removeCallbacksAndMessages(null); 1626 // Wake up the WebCore thread just in case it is waiting for a 1627 // JavaScript dialog. 1628 synchronized (mCallbackProxy) { 1629 mCallbackProxy.notify(); 1630 } 1631 } 1632 if (mNativeClass != 0) { 1633 nativeDestroy(); 1634 mNativeClass = 0; 1635 } 1636 } 1637 1638 /** 1639 * Enables platform notifications of data state and proxy changes. 1640 * Notifications are enabled by default. 1641 * 1642 * @deprecated This method is now obsolete. 1643 */ 1644 @Deprecated 1645 public static void enablePlatformNotifications() { 1646 checkThread(); 1647 synchronized (WebView.class) { 1648 Network.enablePlatformNotifications(); 1649 sNotificationsEnabled = true; 1650 Context context = JniUtil.getContext(); 1651 if (context != null) 1652 setupProxyListener(context); 1653 } 1654 } 1655 1656 /** 1657 * Disables platform notifications of data state and proxy changes. 1658 * Notifications are enabled by default. 1659 * 1660 * @deprecated This method is now obsolete. 1661 */ 1662 @Deprecated 1663 public static void disablePlatformNotifications() { 1664 checkThread(); 1665 synchronized (WebView.class) { 1666 Network.disablePlatformNotifications(); 1667 sNotificationsEnabled = false; 1668 Context context = JniUtil.getContext(); 1669 if (context != null) 1670 disableProxyListener(context); 1671 } 1672 } 1673 1674 /** 1675 * Sets JavaScript engine flags. 1676 * 1677 * @param flags JS engine flags in a String 1678 * 1679 * @hide pending API solidification 1680 */ 1681 public void setJsFlags(String flags) { 1682 checkThread(); 1683 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1684 } 1685 1686 /** 1687 * Inform WebView of the network state. This is used to set 1688 * the JavaScript property window.navigator.isOnline and 1689 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1690 * @param networkUp boolean indicating if network is available 1691 */ 1692 public void setNetworkAvailable(boolean networkUp) { 1693 checkThread(); 1694 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1695 networkUp ? 1 : 0, 0); 1696 } 1697 1698 /** 1699 * Inform WebView about the current network type. 1700 * {@hide} 1701 */ 1702 public void setNetworkType(String type, String subtype) { 1703 checkThread(); 1704 Map<String, String> map = new HashMap<String, String>(); 1705 map.put("type", type); 1706 map.put("subtype", subtype); 1707 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1708 } 1709 /** 1710 * Save the state of this WebView used in 1711 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1712 * method no longer stores the display data for this WebView. The previous 1713 * behavior could potentially leak files if {@link #restoreState} was never 1714 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1715 * and restoring the display data. 1716 * @param outState The Bundle to store the WebView state. 1717 * @return The same copy of the back/forward list used to save the state. If 1718 * saveState fails, the returned list will be null. 1719 * @see #savePicture 1720 * @see #restorePicture 1721 */ 1722 public WebBackForwardList saveState(Bundle outState) { 1723 checkThread(); 1724 if (outState == null) { 1725 return null; 1726 } 1727 // We grab a copy of the back/forward list because a client of WebView 1728 // may have invalidated the history list by calling clearHistory. 1729 WebBackForwardList list = copyBackForwardList(); 1730 final int currentIndex = list.getCurrentIndex(); 1731 final int size = list.getSize(); 1732 // We should fail saving the state if the list is empty or the index is 1733 // not in a valid range. 1734 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1735 return null; 1736 } 1737 outState.putInt("index", currentIndex); 1738 // FIXME: This should just be a byte[][] instead of ArrayList but 1739 // Parcel.java does not have the code to handle multi-dimensional 1740 // arrays. 1741 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1742 for (int i = 0; i < size; i++) { 1743 WebHistoryItem item = list.getItemAtIndex(i); 1744 if (null == item) { 1745 // FIXME: this shouldn't happen 1746 // need to determine how item got set to null 1747 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1748 return null; 1749 } 1750 byte[] data = item.getFlattenedData(); 1751 if (data == null) { 1752 // It would be very odd to not have any data for a given history 1753 // item. And we will fail to rebuild the history list without 1754 // flattened data. 1755 return null; 1756 } 1757 history.add(data); 1758 } 1759 outState.putSerializable("history", history); 1760 if (mCertificate != null) { 1761 outState.putBundle("certificate", 1762 SslCertificate.saveState(mCertificate)); 1763 } 1764 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1765 mZoomManager.saveZoomState(outState); 1766 return list; 1767 } 1768 1769 /** 1770 * Save the current display data to the Bundle given. Used in conjunction 1771 * with {@link #saveState}. 1772 * @param b A Bundle to store the display data. 1773 * @param dest The file to store the serialized picture data. Will be 1774 * overwritten with this WebView's picture data. 1775 * @return True if the picture was successfully saved. 1776 * @deprecated This method is now obsolete. 1777 */ 1778 @Deprecated 1779 public boolean savePicture(Bundle b, final File dest) { 1780 checkThread(); 1781 if (dest == null || b == null) { 1782 return false; 1783 } 1784 final Picture p = capturePicture(); 1785 // Use a temporary file while writing to ensure the destination file 1786 // contains valid data. 1787 final File temp = new File(dest.getPath() + ".writing"); 1788 new Thread(new Runnable() { 1789 public void run() { 1790 FileOutputStream out = null; 1791 try { 1792 out = new FileOutputStream(temp); 1793 p.writeToStream(out); 1794 // Writing the picture succeeded, rename the temporary file 1795 // to the destination. 1796 temp.renameTo(dest); 1797 } catch (Exception e) { 1798 // too late to do anything about it. 1799 } finally { 1800 if (out != null) { 1801 try { 1802 out.close(); 1803 } catch (Exception e) { 1804 // Can't do anything about that 1805 } 1806 } 1807 temp.delete(); 1808 } 1809 } 1810 }).start(); 1811 // now update the bundle 1812 b.putInt("scrollX", mScrollX); 1813 b.putInt("scrollY", mScrollY); 1814 mZoomManager.saveZoomState(b); 1815 return true; 1816 } 1817 1818 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1819 int sx = b.getInt("scrollX", 0); 1820 int sy = b.getInt("scrollY", 0); 1821 1822 mDrawHistory = true; 1823 mHistoryPicture = p; 1824 1825 mScrollX = sx; 1826 mScrollY = sy; 1827 mZoomManager.restoreZoomState(b); 1828 final float scale = mZoomManager.getScale(); 1829 mHistoryWidth = Math.round(p.getWidth() * scale); 1830 mHistoryHeight = Math.round(p.getHeight() * scale); 1831 1832 invalidate(); 1833 } 1834 1835 /** 1836 * Restore the display data that was save in {@link #savePicture}. Used in 1837 * conjunction with {@link #restoreState}. 1838 * 1839 * Note that this will not work if the WebView is hardware accelerated. 1840 * @param b A Bundle containing the saved display data. 1841 * @param src The file where the picture data was stored. 1842 * @return True if the picture was successfully restored. 1843 * @deprecated This method is now obsolete. 1844 */ 1845 @Deprecated 1846 public boolean restorePicture(Bundle b, File src) { 1847 checkThread(); 1848 if (src == null || b == null) { 1849 return false; 1850 } 1851 if (!src.exists()) { 1852 return false; 1853 } 1854 try { 1855 final FileInputStream in = new FileInputStream(src); 1856 final Bundle copy = new Bundle(b); 1857 new Thread(new Runnable() { 1858 public void run() { 1859 try { 1860 final Picture p = Picture.createFromStream(in); 1861 if (p != null) { 1862 // Post a runnable on the main thread to update the 1863 // history picture fields. 1864 mPrivateHandler.post(new Runnable() { 1865 public void run() { 1866 restoreHistoryPictureFields(p, copy); 1867 } 1868 }); 1869 } 1870 } finally { 1871 try { 1872 in.close(); 1873 } catch (Exception e) { 1874 // Nothing we can do now. 1875 } 1876 } 1877 } 1878 }).start(); 1879 } catch (FileNotFoundException e){ 1880 e.printStackTrace(); 1881 } 1882 return true; 1883 } 1884 1885 /** 1886 * Saves the view data to the output stream. The output is highly 1887 * version specific, and may not be able to be loaded by newer versions 1888 * of WebView. 1889 * @param stream The {@link OutputStream} to save to 1890 * @return True if saved successfully 1891 * @hide 1892 */ 1893 public boolean saveViewState(OutputStream stream) { 1894 try { 1895 return ViewStateSerializer.serializeViewState(stream, this); 1896 } catch (IOException e) { 1897 Log.w(LOGTAG, "Failed to saveViewState", e); 1898 } 1899 return false; 1900 } 1901 1902 /** 1903 * Loads the view data from the input stream. See 1904 * {@link #saveViewState(OutputStream)} for more information. 1905 * @param stream The {@link InputStream} to load from 1906 * @return True if loaded successfully 1907 * @hide 1908 */ 1909 public boolean loadViewState(InputStream stream) { 1910 try { 1911 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1912 mBlockWebkitViewMessages = true; 1913 setNewPicture(mLoadedPicture, true); 1914 return true; 1915 } catch (IOException e) { 1916 Log.w(LOGTAG, "Failed to loadViewState", e); 1917 } 1918 return false; 1919 } 1920 1921 /** 1922 * Clears the view state set with {@link #loadViewState(InputStream)}. 1923 * This WebView will then switch to showing the content from webkit 1924 * @hide 1925 */ 1926 public void clearViewState() { 1927 mBlockWebkitViewMessages = false; 1928 mLoadedPicture = null; 1929 invalidate(); 1930 } 1931 1932 /** 1933 * Restore the state of this WebView from the given map used in 1934 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1935 * be called to restore the state of the WebView before using the object. If 1936 * it is called after the WebView has had a chance to build state (load 1937 * pages, create a back/forward list, etc.) there may be undesirable 1938 * side-effects. Please note that this method no longer restores the 1939 * display data for this WebView. See {@link #savePicture} and {@link 1940 * #restorePicture} for saving and restoring the display data. 1941 * @param inState The incoming Bundle of state. 1942 * @return The restored back/forward list or null if restoreState failed. 1943 * @see #savePicture 1944 * @see #restorePicture 1945 */ 1946 public WebBackForwardList restoreState(Bundle inState) { 1947 checkThread(); 1948 WebBackForwardList returnList = null; 1949 if (inState == null) { 1950 return returnList; 1951 } 1952 if (inState.containsKey("index") && inState.containsKey("history")) { 1953 mCertificate = SslCertificate.restoreState( 1954 inState.getBundle("certificate")); 1955 1956 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1957 final int index = inState.getInt("index"); 1958 // We can't use a clone of the list because we need to modify the 1959 // shared copy, so synchronize instead to prevent concurrent 1960 // modifications. 1961 synchronized (list) { 1962 final List<byte[]> history = 1963 (List<byte[]>) inState.getSerializable("history"); 1964 final int size = history.size(); 1965 // Check the index bounds so we don't crash in native code while 1966 // restoring the history index. 1967 if (index < 0 || index >= size) { 1968 return null; 1969 } 1970 for (int i = 0; i < size; i++) { 1971 byte[] data = history.remove(0); 1972 if (data == null) { 1973 // If we somehow have null data, we cannot reconstruct 1974 // the item and thus our history list cannot be rebuilt. 1975 return null; 1976 } 1977 WebHistoryItem item = new WebHistoryItem(data); 1978 list.addHistoryItem(item); 1979 } 1980 // Grab the most recent copy to return to the caller. 1981 returnList = copyBackForwardList(); 1982 // Update the copy to have the correct index. 1983 returnList.setCurrentIndex(index); 1984 } 1985 // Restore private browsing setting. 1986 if (inState.getBoolean("privateBrowsingEnabled")) { 1987 getSettings().setPrivateBrowsingEnabled(true); 1988 } 1989 mZoomManager.restoreZoomState(inState); 1990 // Remove all pending messages because we are restoring previous 1991 // state. 1992 mWebViewCore.removeMessages(); 1993 // Send a restore state message. 1994 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1995 } 1996 return returnList; 1997 } 1998 1999 /** 2000 * Load the given url with the extra headers. 2001 * @param url The url of the resource to load. 2002 * @param extraHeaders The extra headers sent with this url. This should not 2003 * include the common headers like "user-agent". If it does, it 2004 * will be replaced by the intrinsic value of the WebView. 2005 */ 2006 public void loadUrl(String url, Map<String, String> extraHeaders) { 2007 checkThread(); 2008 loadUrlImpl(url, extraHeaders); 2009 } 2010 2011 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2012 switchOutDrawHistory(); 2013 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2014 arg.mUrl = url; 2015 arg.mExtraHeaders = extraHeaders; 2016 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2017 clearHelpers(); 2018 } 2019 2020 /** 2021 * Load the given url. 2022 * @param url The url of the resource to load. 2023 */ 2024 public void loadUrl(String url) { 2025 checkThread(); 2026 loadUrlImpl(url); 2027 } 2028 2029 private void loadUrlImpl(String url) { 2030 if (url == null) { 2031 return; 2032 } 2033 loadUrlImpl(url, null); 2034 } 2035 2036 /** 2037 * Load the url with postData using "POST" method into the WebView. If url 2038 * is not a network url, it will be loaded with {link 2039 * {@link #loadUrl(String)} instead. 2040 * 2041 * @param url The url of the resource to load. 2042 * @param postData The data will be passed to "POST" request. 2043 */ 2044 public void postUrl(String url, byte[] postData) { 2045 checkThread(); 2046 if (URLUtil.isNetworkUrl(url)) { 2047 switchOutDrawHistory(); 2048 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2049 arg.mUrl = url; 2050 arg.mPostData = postData; 2051 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2052 clearHelpers(); 2053 } else { 2054 loadUrlImpl(url); 2055 } 2056 } 2057 2058 /** 2059 * Load the given data into the WebView using a 'data' scheme URL. 2060 * <p> 2061 * Note that JavaScript's same origin policy means that script running in a 2062 * page loaded using this method will be unable to access content loaded 2063 * using any scheme other than 'data', including 'http(s)'. To avoid this 2064 * restriction, use {@link 2065 * #loadDataWithBaseURL(String,String,String,String,String) 2066 * loadDataWithBaseURL()} with an appropriate base URL. 2067 * <p> 2068 * If the value of the encoding parameter is 'base64', then the data must 2069 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2070 * octets inside the range of safe URL characters and use the standard %xx 2071 * hex encoding of URLs for octets outside that range. 2072 * @param data A String of data in the given encoding. 2073 * @param mimeType The MIMEType of the data, e.g. 'text/html'. 2074 * @param encoding The encoding of the data. 2075 */ 2076 public void loadData(String data, String mimeType, String encoding) { 2077 checkThread(); 2078 loadDataImpl(data, mimeType, encoding); 2079 } 2080 2081 private void loadDataImpl(String data, String mimeType, String encoding) { 2082 StringBuilder dataUrl = new StringBuilder("data:"); 2083 dataUrl.append(mimeType); 2084 if ("base64".equals(encoding)) { 2085 dataUrl.append(";base64"); 2086 } 2087 dataUrl.append(","); 2088 dataUrl.append(data); 2089 loadUrlImpl(dataUrl.toString()); 2090 } 2091 2092 /** 2093 * Load the given data into the WebView, using baseUrl as the base URL for 2094 * the content. The base URL is used both to resolve relative URLs and when 2095 * applying JavaScript's same origin policy. The historyUrl is used for the 2096 * history entry. 2097 * <p> 2098 * Note that content specified in this way can access local device files 2099 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2100 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2101 * <p> 2102 * If the base URL uses the data scheme, this method is equivalent to 2103 * calling {@link #loadData(String,String,String) loadData()} and the 2104 * historyUrl is ignored. 2105 * @param baseUrl URL to use as the page's base URL. If null defaults to 2106 * 'about:blank' 2107 * @param data A String of data in the given encoding. 2108 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2109 * defaults to 'text/html'. 2110 * @param encoding The encoding of the data. 2111 * @param historyUrl URL to use as the history entry, if null defaults to 2112 * 'about:blank'. 2113 */ 2114 public void loadDataWithBaseURL(String baseUrl, String data, 2115 String mimeType, String encoding, String historyUrl) { 2116 checkThread(); 2117 2118 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2119 loadDataImpl(data, mimeType, encoding); 2120 return; 2121 } 2122 switchOutDrawHistory(); 2123 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2124 arg.mBaseUrl = baseUrl; 2125 arg.mData = data; 2126 arg.mMimeType = mimeType; 2127 arg.mEncoding = encoding; 2128 arg.mHistoryUrl = historyUrl; 2129 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2130 clearHelpers(); 2131 } 2132 2133 /** 2134 * Saves the current view as a web archive. 2135 * 2136 * @param filename The filename where the archive should be placed. 2137 */ 2138 public void saveWebArchive(String filename) { 2139 checkThread(); 2140 saveWebArchiveImpl(filename, false, null); 2141 } 2142 2143 /* package */ static class SaveWebArchiveMessage { 2144 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2145 mBasename = basename; 2146 mAutoname = autoname; 2147 mCallback = callback; 2148 } 2149 2150 /* package */ final String mBasename; 2151 /* package */ final boolean mAutoname; 2152 /* package */ final ValueCallback<String> mCallback; 2153 /* package */ String mResultFile; 2154 } 2155 2156 /** 2157 * Saves the current view as a web archive. 2158 * 2159 * @param basename The filename where the archive should be placed. 2160 * @param autoname If false, takes basename to be a file. If true, basename 2161 * is assumed to be a directory in which a filename will be 2162 * chosen according to the url of the current page. 2163 * @param callback Called after the web archive has been saved. The 2164 * parameter for onReceiveValue will either be the filename 2165 * under which the file was saved, or null if saving the 2166 * file failed. 2167 */ 2168 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2169 checkThread(); 2170 saveWebArchiveImpl(basename, autoname, callback); 2171 } 2172 2173 private void saveWebArchiveImpl(String basename, boolean autoname, 2174 ValueCallback<String> callback) { 2175 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2176 new SaveWebArchiveMessage(basename, autoname, callback)); 2177 } 2178 2179 /** 2180 * Stop the current load. 2181 */ 2182 public void stopLoading() { 2183 checkThread(); 2184 // TODO: should we clear all the messages in the queue before sending 2185 // STOP_LOADING? 2186 switchOutDrawHistory(); 2187 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2188 } 2189 2190 /** 2191 * Reload the current url. 2192 */ 2193 public void reload() { 2194 checkThread(); 2195 clearHelpers(); 2196 switchOutDrawHistory(); 2197 mWebViewCore.sendMessage(EventHub.RELOAD); 2198 } 2199 2200 /** 2201 * Return true if this WebView has a back history item. 2202 * @return True iff this WebView has a back history item. 2203 */ 2204 public boolean canGoBack() { 2205 checkThread(); 2206 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2207 synchronized (l) { 2208 if (l.getClearPending()) { 2209 return false; 2210 } else { 2211 return l.getCurrentIndex() > 0; 2212 } 2213 } 2214 } 2215 2216 /** 2217 * Go back in the history of this WebView. 2218 */ 2219 public void goBack() { 2220 checkThread(); 2221 goBackOrForwardImpl(-1); 2222 } 2223 2224 /** 2225 * Return true if this WebView has a forward history item. 2226 * @return True iff this Webview has a forward history item. 2227 */ 2228 public boolean canGoForward() { 2229 checkThread(); 2230 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2231 synchronized (l) { 2232 if (l.getClearPending()) { 2233 return false; 2234 } else { 2235 return l.getCurrentIndex() < l.getSize() - 1; 2236 } 2237 } 2238 } 2239 2240 /** 2241 * Go forward in the history of this WebView. 2242 */ 2243 public void goForward() { 2244 checkThread(); 2245 goBackOrForwardImpl(1); 2246 } 2247 2248 /** 2249 * Return true if the page can go back or forward the given 2250 * number of steps. 2251 * @param steps The negative or positive number of steps to move the 2252 * history. 2253 */ 2254 public boolean canGoBackOrForward(int steps) { 2255 checkThread(); 2256 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2257 synchronized (l) { 2258 if (l.getClearPending()) { 2259 return false; 2260 } else { 2261 int newIndex = l.getCurrentIndex() + steps; 2262 return newIndex >= 0 && newIndex < l.getSize(); 2263 } 2264 } 2265 } 2266 2267 /** 2268 * Go to the history item that is the number of steps away from 2269 * the current item. Steps is negative if backward and positive 2270 * if forward. 2271 * @param steps The number of steps to take back or forward in the back 2272 * forward list. 2273 */ 2274 public void goBackOrForward(int steps) { 2275 checkThread(); 2276 goBackOrForwardImpl(steps); 2277 } 2278 2279 private void goBackOrForwardImpl(int steps) { 2280 goBackOrForward(steps, false); 2281 } 2282 2283 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2284 if (steps != 0) { 2285 clearHelpers(); 2286 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2287 ignoreSnapshot ? 1 : 0); 2288 } 2289 } 2290 2291 /** 2292 * Returns true if private browsing is enabled in this WebView. 2293 */ 2294 public boolean isPrivateBrowsingEnabled() { 2295 checkThread(); 2296 return getSettings().isPrivateBrowsingEnabled(); 2297 } 2298 2299 private void startPrivateBrowsing() { 2300 getSettings().setPrivateBrowsingEnabled(true); 2301 } 2302 2303 private boolean extendScroll(int y) { 2304 int finalY = mScroller.getFinalY(); 2305 int newY = pinLocY(finalY + y); 2306 if (newY == finalY) return false; 2307 mScroller.setFinalY(newY); 2308 mScroller.extendDuration(computeDuration(0, y)); 2309 return true; 2310 } 2311 2312 /** 2313 * Scroll the contents of the view up by half the view size 2314 * @param top true to jump to the top of the page 2315 * @return true if the page was scrolled 2316 */ 2317 public boolean pageUp(boolean top) { 2318 checkThread(); 2319 if (mNativeClass == 0) { 2320 return false; 2321 } 2322 nativeClearCursor(); // start next trackball movement from page edge 2323 if (top) { 2324 // go to the top of the document 2325 return pinScrollTo(mScrollX, 0, true, 0); 2326 } 2327 // Page up 2328 int h = getHeight(); 2329 int y; 2330 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2331 y = -h + PAGE_SCROLL_OVERLAP; 2332 } else { 2333 y = -h / 2; 2334 } 2335 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2336 : extendScroll(y); 2337 } 2338 2339 /** 2340 * Scroll the contents of the view down by half the page size 2341 * @param bottom true to jump to bottom of page 2342 * @return true if the page was scrolled 2343 */ 2344 public boolean pageDown(boolean bottom) { 2345 checkThread(); 2346 if (mNativeClass == 0) { 2347 return false; 2348 } 2349 nativeClearCursor(); // start next trackball movement from page edge 2350 if (bottom) { 2351 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2352 } 2353 // Page down. 2354 int h = getHeight(); 2355 int y; 2356 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2357 y = h - PAGE_SCROLL_OVERLAP; 2358 } else { 2359 y = h / 2; 2360 } 2361 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2362 : extendScroll(y); 2363 } 2364 2365 /** 2366 * Clear the view so that onDraw() will draw nothing but white background, 2367 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2368 */ 2369 public void clearView() { 2370 checkThread(); 2371 mContentWidth = 0; 2372 mContentHeight = 0; 2373 setBaseLayer(0, null, false, false, false); 2374 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2375 } 2376 2377 /** 2378 * Return a new picture that captures the current display of the webview. 2379 * This is a copy of the display, and will be unaffected if the webview 2380 * later loads a different URL. 2381 * 2382 * @return a picture containing the current contents of the view. Note this 2383 * picture is of the entire document, and is not restricted to the 2384 * bounds of the view. 2385 */ 2386 public Picture capturePicture() { 2387 checkThread(); 2388 if (mNativeClass == 0) return null; 2389 Picture result = new Picture(); 2390 nativeCopyBaseContentToPicture(result); 2391 return result; 2392 } 2393 2394 /** 2395 * Return true if the browser is displaying a TextView for text input. 2396 */ 2397 private boolean inEditingMode() { 2398 return mWebTextView != null && mWebTextView.getParent() != null; 2399 } 2400 2401 /** 2402 * Remove the WebTextView. 2403 */ 2404 private void clearTextEntry() { 2405 if (inEditingMode()) { 2406 mWebTextView.remove(); 2407 } else { 2408 // The keyboard may be open with the WebView as the served view 2409 hideSoftKeyboard(); 2410 } 2411 } 2412 2413 /** 2414 * Return the current scale of the WebView 2415 * @return The current scale. 2416 */ 2417 public float getScale() { 2418 checkThread(); 2419 return mZoomManager.getScale(); 2420 } 2421 2422 // Called by JNI. Returns the scale to apply to the text selection handles 2423 /* package */ float getTextHandleScale() { 2424 float density = mContext.getResources().getDisplayMetrics().density; 2425 return density / getScale(); 2426 } 2427 2428 /** 2429 * Return the reading level scale of the WebView 2430 * @return The reading level scale. 2431 */ 2432 /*package*/ float getReadingLevelScale() { 2433 return mZoomManager.getReadingLevelScale(); 2434 } 2435 2436 /** 2437 * Set the initial scale for the WebView. 0 means default. If 2438 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2439 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2440 * WebView starts will this value as initial scale. 2441 * 2442 * @param scaleInPercent The initial scale in percent. 2443 */ 2444 public void setInitialScale(int scaleInPercent) { 2445 checkThread(); 2446 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2447 } 2448 2449 /** 2450 * Invoke the graphical zoom picker widget for this WebView. This will 2451 * result in the zoom widget appearing on the screen to control the zoom 2452 * level of this WebView. 2453 */ 2454 public void invokeZoomPicker() { 2455 checkThread(); 2456 if (!getSettings().supportZoom()) { 2457 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2458 return; 2459 } 2460 clearHelpers(); 2461 mZoomManager.invokeZoomPicker(); 2462 } 2463 2464 /** 2465 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2466 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2467 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2468 * anchor does not have a url or if it is a JavaScript url, the type will 2469 * be UNKNOWN_TYPE and the url has to be retrieved through 2470 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2471 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2472 * the "extra" field. A type of 2473 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2474 * a child node. If a phone number is found, the HitTestResult type is set 2475 * to PHONE_TYPE and the phone number is set in the "extra" field of 2476 * HitTestResult. If a map address is found, the HitTestResult type is set 2477 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2478 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2479 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2480 * HitTestResult type is set to UNKNOWN_TYPE. 2481 */ 2482 public HitTestResult getHitTestResult() { 2483 checkThread(); 2484 return hitTestResult(mInitialHitTestResult); 2485 } 2486 2487 private HitTestResult hitTestResult(HitTestResult fallback) { 2488 if (mNativeClass == 0) { 2489 return null; 2490 } 2491 2492 HitTestResult result = new HitTestResult(); 2493 if (nativeHasCursorNode()) { 2494 if (nativeCursorIsTextInput()) { 2495 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2496 } else { 2497 String text = nativeCursorText(); 2498 if (text != null) { 2499 if (text.startsWith(SCHEME_TEL)) { 2500 result.setType(HitTestResult.PHONE_TYPE); 2501 result.setExtra(text.substring(SCHEME_TEL.length())); 2502 } else if (text.startsWith(SCHEME_MAILTO)) { 2503 result.setType(HitTestResult.EMAIL_TYPE); 2504 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2505 } else if (text.startsWith(SCHEME_GEO)) { 2506 result.setType(HitTestResult.GEO_TYPE); 2507 result.setExtra(URLDecoder.decode(text 2508 .substring(SCHEME_GEO.length()))); 2509 } else if (nativeCursorIsAnchor()) { 2510 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2511 result.setExtra(text); 2512 } 2513 } 2514 } 2515 } else if (fallback != null) { 2516 /* If webkit causes a rebuild while the long press is in progress, 2517 * the cursor node may be reset, even if it is still around. This 2518 * uses the cursor node saved when the touch began. Since the 2519 * nativeImageURI below only changes the result if it is successful, 2520 * this uses the data beneath the touch if available or the original 2521 * tap data otherwise. 2522 */ 2523 Log.v(LOGTAG, "hitTestResult use fallback"); 2524 result = fallback; 2525 } 2526 int type = result.getType(); 2527 if (type == HitTestResult.UNKNOWN_TYPE 2528 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2529 // Now check to see if it is an image. 2530 int contentX = viewToContentX(mLastTouchX + mScrollX); 2531 int contentY = viewToContentY(mLastTouchY + mScrollY); 2532 String text = nativeImageURI(contentX, contentY); 2533 if (text != null) { 2534 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2535 HitTestResult.IMAGE_TYPE : 2536 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2537 result.setExtra(text); 2538 } 2539 } 2540 return result; 2541 } 2542 2543 // Called by JNI when the DOM has changed the focus. Clear the focus so 2544 // that new keys will go to the newly focused field 2545 private void domChangedFocus() { 2546 if (inEditingMode()) { 2547 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2548 } 2549 } 2550 /** 2551 * Request the anchor or image element URL at the last tapped point. 2552 * If hrefMsg is null, this method returns immediately and does not 2553 * dispatch hrefMsg to its target. If the tapped point hits an image, 2554 * an anchor, or an image in an anchor, the message associates 2555 * strings in named keys in its data. The value paired with the key 2556 * may be an empty string. 2557 * 2558 * @param hrefMsg This message will be dispatched with the result of the 2559 * request. The message data contains three keys: 2560 * - "url" returns the anchor's href attribute. 2561 * - "title" returns the anchor's text. 2562 * - "src" returns the image's src attribute. 2563 */ 2564 public void requestFocusNodeHref(Message hrefMsg) { 2565 checkThread(); 2566 if (hrefMsg == null) { 2567 return; 2568 } 2569 int contentX = viewToContentX(mLastTouchX + mScrollX); 2570 int contentY = viewToContentY(mLastTouchY + mScrollY); 2571 if (nativeHasCursorNode()) { 2572 Rect cursorBounds = nativeGetCursorRingBounds(); 2573 if (!cursorBounds.contains(contentX, contentY)) { 2574 int slop = viewToContentDimension(mNavSlop); 2575 cursorBounds.inset(-slop, -slop); 2576 if (cursorBounds.contains(contentX, contentY)) { 2577 contentX = (int) cursorBounds.centerX(); 2578 contentY = (int) cursorBounds.centerY(); 2579 } 2580 } 2581 } 2582 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2583 contentX, contentY, hrefMsg); 2584 } 2585 2586 /** 2587 * Request the url of the image last touched by the user. msg will be sent 2588 * to its target with a String representing the url as its object. 2589 * 2590 * @param msg This message will be dispatched with the result of the request 2591 * as the data member with "url" as key. The result can be null. 2592 */ 2593 public void requestImageRef(Message msg) { 2594 checkThread(); 2595 if (0 == mNativeClass) return; // client isn't initialized 2596 int contentX = viewToContentX(mLastTouchX + mScrollX); 2597 int contentY = viewToContentY(mLastTouchY + mScrollY); 2598 String ref = nativeImageURI(contentX, contentY); 2599 Bundle data = msg.getData(); 2600 data.putString("url", ref); 2601 msg.setData(data); 2602 msg.sendToTarget(); 2603 } 2604 2605 static int pinLoc(int x, int viewMax, int docMax) { 2606// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2607 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2608 // pin the short document to the top/left of the screen 2609 x = 0; 2610// Log.d(LOGTAG, "--- center " + x); 2611 } else if (x < 0) { 2612 x = 0; 2613// Log.d(LOGTAG, "--- zero"); 2614 } else if (x + viewMax > docMax) { 2615 x = docMax - viewMax; 2616// Log.d(LOGTAG, "--- pin " + x); 2617 } 2618 return x; 2619 } 2620 2621 // Expects x in view coordinates 2622 int pinLocX(int x) { 2623 if (mInOverScrollMode) return x; 2624 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2625 } 2626 2627 // Expects y in view coordinates 2628 int pinLocY(int y) { 2629 if (mInOverScrollMode) return y; 2630 return pinLoc(y, getViewHeightWithTitle(), 2631 computeRealVerticalScrollRange() + getTitleHeight()); 2632 } 2633 2634 /** 2635 * A title bar which is embedded in this WebView, and scrolls along with it 2636 * vertically, but not horizontally. 2637 */ 2638 private View mTitleBar; 2639 2640 /** 2641 * the title bar rendering gravity 2642 */ 2643 private int mTitleGravity; 2644 2645 /** 2646 * Add or remove a title bar to be embedded into the WebView, and scroll 2647 * along with it vertically, while remaining in view horizontally. Pass 2648 * null to remove the title bar from the WebView, and return to drawing 2649 * the WebView normally without translating to account for the title bar. 2650 * @hide 2651 */ 2652 public void setEmbeddedTitleBar(View v) { 2653 if (mTitleBar == v) return; 2654 if (mTitleBar != null) { 2655 removeView(mTitleBar); 2656 } 2657 if (null != v) { 2658 addView(v, new AbsoluteLayout.LayoutParams( 2659 ViewGroup.LayoutParams.MATCH_PARENT, 2660 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2661 } 2662 mTitleBar = v; 2663 } 2664 2665 /** 2666 * Set where to render the embedded title bar 2667 * NO_GRAVITY at the top of the page 2668 * TOP at the top of the screen 2669 * @hide 2670 */ 2671 public void setTitleBarGravity(int gravity) { 2672 mTitleGravity = gravity; 2673 // force refresh 2674 invalidate(); 2675 } 2676 2677 /** 2678 * Given a distance in view space, convert it to content space. Note: this 2679 * does not reflect translation, just scaling, so this should not be called 2680 * with coordinates, but should be called for dimensions like width or 2681 * height. 2682 */ 2683 private int viewToContentDimension(int d) { 2684 return Math.round(d * mZoomManager.getInvScale()); 2685 } 2686 2687 /** 2688 * Given an x coordinate in view space, convert it to content space. Also 2689 * may be used for absolute heights (such as for the WebTextView's 2690 * textSize, which is unaffected by the height of the title bar). 2691 */ 2692 /*package*/ int viewToContentX(int x) { 2693 return viewToContentDimension(x); 2694 } 2695 2696 /** 2697 * Given a y coordinate in view space, convert it to content space. 2698 * Takes into account the height of the title bar if there is one 2699 * embedded into the WebView. 2700 */ 2701 /*package*/ int viewToContentY(int y) { 2702 return viewToContentDimension(y - getTitleHeight()); 2703 } 2704 2705 /** 2706 * Given a x coordinate in view space, convert it to content space. 2707 * Returns the result as a float. 2708 */ 2709 private float viewToContentXf(int x) { 2710 return x * mZoomManager.getInvScale(); 2711 } 2712 2713 /** 2714 * Given a y coordinate in view space, convert it to content space. 2715 * Takes into account the height of the title bar if there is one 2716 * embedded into the WebView. Returns the result as a float. 2717 */ 2718 private float viewToContentYf(int y) { 2719 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2720 } 2721 2722 /** 2723 * Given a distance in content space, convert it to view space. Note: this 2724 * does not reflect translation, just scaling, so this should not be called 2725 * with coordinates, but should be called for dimensions like width or 2726 * height. 2727 */ 2728 /*package*/ int contentToViewDimension(int d) { 2729 return Math.round(d * mZoomManager.getScale()); 2730 } 2731 2732 /** 2733 * Given an x coordinate in content space, convert it to view 2734 * space. 2735 */ 2736 /*package*/ int contentToViewX(int x) { 2737 return contentToViewDimension(x); 2738 } 2739 2740 /** 2741 * Given a y coordinate in content space, convert it to view 2742 * space. Takes into account the height of the title bar. 2743 */ 2744 /*package*/ int contentToViewY(int y) { 2745 return contentToViewDimension(y) + getTitleHeight(); 2746 } 2747 2748 private Rect contentToViewRect(Rect x) { 2749 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2750 contentToViewX(x.right), contentToViewY(x.bottom)); 2751 } 2752 2753 /* To invalidate a rectangle in content coordinates, we need to transform 2754 the rect into view coordinates, so we can then call invalidate(...). 2755 2756 Normally, we would just call contentToView[XY](...), which eventually 2757 calls Math.round(coordinate * mActualScale). However, for invalidates, 2758 we need to account for the slop that occurs with antialiasing. To 2759 address that, we are a little more liberal in the size of the rect that 2760 we invalidate. 2761 2762 This liberal calculation calls floor() for the top/left, and ceil() for 2763 the bottom/right coordinates. This catches the possible extra pixels of 2764 antialiasing that we might have missed with just round(). 2765 */ 2766 2767 // Called by JNI to invalidate the View, given rectangle coordinates in 2768 // content space 2769 private void viewInvalidate(int l, int t, int r, int b) { 2770 final float scale = mZoomManager.getScale(); 2771 final int dy = getTitleHeight(); 2772 invalidate((int)Math.floor(l * scale), 2773 (int)Math.floor(t * scale) + dy, 2774 (int)Math.ceil(r * scale), 2775 (int)Math.ceil(b * scale) + dy); 2776 } 2777 2778 // Called by JNI to invalidate the View after a delay, given rectangle 2779 // coordinates in content space 2780 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2781 final float scale = mZoomManager.getScale(); 2782 final int dy = getTitleHeight(); 2783 postInvalidateDelayed(delay, 2784 (int)Math.floor(l * scale), 2785 (int)Math.floor(t * scale) + dy, 2786 (int)Math.ceil(r * scale), 2787 (int)Math.ceil(b * scale) + dy); 2788 } 2789 2790 private void invalidateContentRect(Rect r) { 2791 viewInvalidate(r.left, r.top, r.right, r.bottom); 2792 } 2793 2794 // stop the scroll animation, and don't let a subsequent fling add 2795 // to the existing velocity 2796 private void abortAnimation() { 2797 mScroller.abortAnimation(); 2798 mLastVelocity = 0; 2799 } 2800 2801 /* call from webcoreview.draw(), so we're still executing in the UI thread 2802 */ 2803 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2804 2805 // premature data from webkit, ignore 2806 if ((w | h) == 0) { 2807 return; 2808 } 2809 2810 // don't abort a scroll animation if we didn't change anything 2811 if (mContentWidth != w || mContentHeight != h) { 2812 // record new dimensions 2813 mContentWidth = w; 2814 mContentHeight = h; 2815 // If history Picture is drawn, don't update scroll. They will be 2816 // updated when we get out of that mode. 2817 if (!mDrawHistory) { 2818 // repin our scroll, taking into account the new content size 2819 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2820 if (!mScroller.isFinished()) { 2821 // We are in the middle of a scroll. Repin the final scroll 2822 // position. 2823 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2824 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2825 } 2826 } 2827 } 2828 contentSizeChanged(updateLayout); 2829 } 2830 2831 // Used to avoid sending many visible rect messages. 2832 private Rect mLastVisibleRectSent; 2833 private Rect mLastGlobalRect; 2834 2835 Rect sendOurVisibleRect() { 2836 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2837 Rect rect = new Rect(); 2838 calcOurContentVisibleRect(rect); 2839 // Rect.equals() checks for null input. 2840 if (!rect.equals(mLastVisibleRectSent)) { 2841 if (!mBlockWebkitViewMessages) { 2842 Point pos = new Point(rect.left, rect.top); 2843 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2844 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2845 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2846 } 2847 mLastVisibleRectSent = rect; 2848 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2849 } 2850 Rect globalRect = new Rect(); 2851 if (getGlobalVisibleRect(globalRect) 2852 && !globalRect.equals(mLastGlobalRect)) { 2853 if (DebugFlags.WEB_VIEW) { 2854 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2855 + globalRect.top + ",r=" + globalRect.right + ",b=" 2856 + globalRect.bottom); 2857 } 2858 // TODO: the global offset is only used by windowRect() 2859 // in ChromeClientAndroid ; other clients such as touch 2860 // and mouse events could return view + screen relative points. 2861 if (!mBlockWebkitViewMessages) { 2862 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2863 } 2864 mLastGlobalRect = globalRect; 2865 } 2866 return rect; 2867 } 2868 2869 // Sets r to be the visible rectangle of our webview in view coordinates 2870 private void calcOurVisibleRect(Rect r) { 2871 Point p = new Point(); 2872 getGlobalVisibleRect(r, p); 2873 r.offset(-p.x, -p.y); 2874 } 2875 2876 // Sets r to be our visible rectangle in content coordinates 2877 private void calcOurContentVisibleRect(Rect r) { 2878 calcOurVisibleRect(r); 2879 r.left = viewToContentX(r.left); 2880 // viewToContentY will remove the total height of the title bar. Add 2881 // the visible height back in to account for the fact that if the title 2882 // bar is partially visible, the part of the visible rect which is 2883 // displaying our content is displaced by that amount. 2884 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2885 r.right = viewToContentX(r.right); 2886 r.bottom = viewToContentY(r.bottom); 2887 } 2888 2889 // Sets r to be our visible rectangle in content coordinates. We use this 2890 // method on the native side to compute the position of the fixed layers. 2891 // Uses floating coordinates (necessary to correctly place elements when 2892 // the scale factor is not 1) 2893 private void calcOurContentVisibleRectF(RectF r) { 2894 Rect ri = new Rect(0,0,0,0); 2895 calcOurVisibleRect(ri); 2896 r.left = viewToContentXf(ri.left); 2897 // viewToContentY will remove the total height of the title bar. Add 2898 // the visible height back in to account for the fact that if the title 2899 // bar is partially visible, the part of the visible rect which is 2900 // displaying our content is displaced by that amount. 2901 r.top = viewToContentYf(ri.top + getVisibleTitleHeightImpl()); 2902 r.right = viewToContentXf(ri.right); 2903 r.bottom = viewToContentYf(ri.bottom); 2904 } 2905 2906 static class ViewSizeData { 2907 int mWidth; 2908 int mHeight; 2909 float mHeightWidthRatio; 2910 int mActualViewHeight; 2911 int mTextWrapWidth; 2912 int mAnchorX; 2913 int mAnchorY; 2914 float mScale; 2915 boolean mIgnoreHeight; 2916 } 2917 2918 /** 2919 * Compute unzoomed width and height, and if they differ from the last 2920 * values we sent, send them to webkit (to be used as new viewport) 2921 * 2922 * @param force ensures that the message is sent to webkit even if the width 2923 * or height has not changed since the last message 2924 * 2925 * @return true if new values were sent 2926 */ 2927 boolean sendViewSizeZoom(boolean force) { 2928 if (mBlockWebkitViewMessages) return false; 2929 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2930 2931 int viewWidth = getViewWidth(); 2932 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2933 // This height could be fixed and be different from actual visible height. 2934 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2935 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2936 // Make the ratio more accurate than (newHeight / newWidth), since the 2937 // latter both are calculated and rounded. 2938 float heightWidthRatio = (float) viewHeight / viewWidth; 2939 /* 2940 * Because the native side may have already done a layout before the 2941 * View system was able to measure us, we have to send a height of 0 to 2942 * remove excess whitespace when we grow our width. This will trigger a 2943 * layout and a change in content size. This content size change will 2944 * mean that contentSizeChanged will either call this method directly or 2945 * indirectly from onSizeChanged. 2946 */ 2947 if (newWidth > mLastWidthSent && mWrapContent) { 2948 newHeight = 0; 2949 heightWidthRatio = 0; 2950 } 2951 // Actual visible content height. 2952 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2953 // Avoid sending another message if the dimensions have not changed. 2954 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2955 actualViewHeight != mLastActualHeightSent) { 2956 ViewSizeData data = new ViewSizeData(); 2957 data.mWidth = newWidth; 2958 data.mHeight = newHeight; 2959 data.mHeightWidthRatio = heightWidthRatio; 2960 data.mActualViewHeight = actualViewHeight; 2961 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2962 data.mScale = mZoomManager.getScale(); 2963 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2964 && !mHeightCanMeasure; 2965 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2966 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2967 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2968 mLastWidthSent = newWidth; 2969 mLastHeightSent = newHeight; 2970 mLastActualHeightSent = actualViewHeight; 2971 mZoomManager.clearDocumentAnchor(); 2972 return true; 2973 } 2974 return false; 2975 } 2976 2977 private int computeRealHorizontalScrollRange() { 2978 if (mDrawHistory) { 2979 return mHistoryWidth; 2980 } else { 2981 // to avoid rounding error caused unnecessary scrollbar, use floor 2982 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2983 } 2984 } 2985 2986 @Override 2987 protected int computeHorizontalScrollRange() { 2988 int range = computeRealHorizontalScrollRange(); 2989 2990 // Adjust reported range if overscrolled to compress the scroll bars 2991 final int scrollX = mScrollX; 2992 final int overscrollRight = computeMaxScrollX(); 2993 if (scrollX < 0) { 2994 range -= scrollX; 2995 } else if (scrollX > overscrollRight) { 2996 range += scrollX - overscrollRight; 2997 } 2998 2999 return range; 3000 } 3001 3002 @Override 3003 protected int computeHorizontalScrollOffset() { 3004 return Math.max(mScrollX, 0); 3005 } 3006 3007 private int computeRealVerticalScrollRange() { 3008 if (mDrawHistory) { 3009 return mHistoryHeight; 3010 } else { 3011 // to avoid rounding error caused unnecessary scrollbar, use floor 3012 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3013 } 3014 } 3015 3016 @Override 3017 protected int computeVerticalScrollRange() { 3018 int range = computeRealVerticalScrollRange(); 3019 3020 // Adjust reported range if overscrolled to compress the scroll bars 3021 final int scrollY = mScrollY; 3022 final int overscrollBottom = computeMaxScrollY(); 3023 if (scrollY < 0) { 3024 range -= scrollY; 3025 } else if (scrollY > overscrollBottom) { 3026 range += scrollY - overscrollBottom; 3027 } 3028 3029 return range; 3030 } 3031 3032 @Override 3033 protected int computeVerticalScrollOffset() { 3034 return Math.max(mScrollY - getTitleHeight(), 0); 3035 } 3036 3037 @Override 3038 protected int computeVerticalScrollExtent() { 3039 return getViewHeight(); 3040 } 3041 3042 /** @hide */ 3043 @Override 3044 protected void onDrawVerticalScrollBar(Canvas canvas, 3045 Drawable scrollBar, 3046 int l, int t, int r, int b) { 3047 if (mScrollY < 0) { 3048 t -= mScrollY; 3049 } 3050 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3051 scrollBar.draw(canvas); 3052 } 3053 3054 @Override 3055 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3056 boolean clampedY) { 3057 // Special-case layer scrolling so that we do not trigger normal scroll 3058 // updating. 3059 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3060 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 3061 mScrollingLayerRect.left = scrollX; 3062 mScrollingLayerRect.top = scrollY; 3063 invalidate(); 3064 return; 3065 } 3066 mInOverScrollMode = false; 3067 int maxX = computeMaxScrollX(); 3068 int maxY = computeMaxScrollY(); 3069 if (maxX == 0) { 3070 // do not over scroll x if the page just fits the screen 3071 scrollX = pinLocX(scrollX); 3072 } else if (scrollX < 0 || scrollX > maxX) { 3073 mInOverScrollMode = true; 3074 } 3075 if (scrollY < 0 || scrollY > maxY) { 3076 mInOverScrollMode = true; 3077 } 3078 3079 int oldX = mScrollX; 3080 int oldY = mScrollY; 3081 3082 super.scrollTo(scrollX, scrollY); 3083 3084 if (mOverScrollGlow != null) { 3085 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3086 } 3087 } 3088 3089 /** 3090 * Get the url for the current page. This is not always the same as the url 3091 * passed to WebViewClient.onPageStarted because although the load for 3092 * that url has begun, the current page may not have changed. 3093 * @return The url for the current page. 3094 */ 3095 public String getUrl() { 3096 checkThread(); 3097 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3098 return h != null ? h.getUrl() : null; 3099 } 3100 3101 /** 3102 * Get the original url for the current page. This is not always the same 3103 * as the url passed to WebViewClient.onPageStarted because although the 3104 * load for that url has begun, the current page may not have changed. 3105 * Also, there may have been redirects resulting in a different url to that 3106 * originally requested. 3107 * @return The url that was originally requested for the current page. 3108 */ 3109 public String getOriginalUrl() { 3110 checkThread(); 3111 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3112 return h != null ? h.getOriginalUrl() : null; 3113 } 3114 3115 /** 3116 * Get the title for the current page. This is the title of the current page 3117 * until WebViewClient.onReceivedTitle is called. 3118 * @return The title for the current page. 3119 */ 3120 public String getTitle() { 3121 checkThread(); 3122 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3123 return h != null ? h.getTitle() : null; 3124 } 3125 3126 /** 3127 * Get the favicon for the current page. This is the favicon of the current 3128 * page until WebViewClient.onReceivedIcon is called. 3129 * @return The favicon for the current page. 3130 */ 3131 public Bitmap getFavicon() { 3132 checkThread(); 3133 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3134 return h != null ? h.getFavicon() : null; 3135 } 3136 3137 /** 3138 * Get the touch icon url for the apple-touch-icon <link> element, or 3139 * a URL on this site's server pointing to the standard location of a 3140 * touch icon. 3141 * @hide 3142 */ 3143 public String getTouchIconUrl() { 3144 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3145 return h != null ? h.getTouchIconUrl() : null; 3146 } 3147 3148 /** 3149 * Get the progress for the current page. 3150 * @return The progress for the current page between 0 and 100. 3151 */ 3152 public int getProgress() { 3153 checkThread(); 3154 return mCallbackProxy.getProgress(); 3155 } 3156 3157 /** 3158 * @return the height of the HTML content. 3159 */ 3160 public int getContentHeight() { 3161 checkThread(); 3162 return mContentHeight; 3163 } 3164 3165 /** 3166 * @return the width of the HTML content. 3167 * @hide 3168 */ 3169 public int getContentWidth() { 3170 return mContentWidth; 3171 } 3172 3173 /** 3174 * @hide 3175 */ 3176 public int getPageBackgroundColor() { 3177 return nativeGetBackgroundColor(); 3178 } 3179 3180 /** 3181 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3182 * is a global requests, not restricted to just this webview. This can be 3183 * useful if the application has been paused. 3184 */ 3185 public void pauseTimers() { 3186 checkThread(); 3187 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3188 } 3189 3190 /** 3191 * Resume all layout, parsing, and JavaScript timers for all webviews. 3192 * This will resume dispatching all timers. 3193 */ 3194 public void resumeTimers() { 3195 checkThread(); 3196 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3197 } 3198 3199 /** 3200 * Call this to pause any extra processing associated with this WebView and 3201 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3202 * is taken offscreen, this could be called to reduce unnecessary CPU or 3203 * network traffic. When the WebView is again "active", call onResume(). 3204 * 3205 * Note that this differs from pauseTimers(), which affects all WebViews. 3206 */ 3207 public void onPause() { 3208 checkThread(); 3209 if (!mIsPaused) { 3210 mIsPaused = true; 3211 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3212 // We want to pause the current playing video when switching out 3213 // from the current WebView/tab. 3214 if (mHTML5VideoViewProxy != null) { 3215 mHTML5VideoViewProxy.pauseAndDispatch(); 3216 } 3217 } 3218 } 3219 3220 /** 3221 * Call this to resume a WebView after a previous call to onPause(). 3222 */ 3223 public void onResume() { 3224 checkThread(); 3225 if (mIsPaused) { 3226 mIsPaused = false; 3227 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3228 } 3229 } 3230 3231 /** 3232 * Returns true if the view is paused, meaning onPause() was called. Calling 3233 * onResume() sets the paused state back to false. 3234 * @hide 3235 */ 3236 public boolean isPaused() { 3237 return mIsPaused; 3238 } 3239 3240 /** 3241 * Call this to inform the view that memory is low so that it can 3242 * free any available memory. 3243 */ 3244 public void freeMemory() { 3245 checkThread(); 3246 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3247 } 3248 3249 /** 3250 * Clear the resource cache. Note that the cache is per-application, so 3251 * this will clear the cache for all WebViews used. 3252 * 3253 * @param includeDiskFiles If false, only the RAM cache is cleared. 3254 */ 3255 public void clearCache(boolean includeDiskFiles) { 3256 checkThread(); 3257 // Note: this really needs to be a static method as it clears cache for all 3258 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3259 // we can't make this static. 3260 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3261 includeDiskFiles ? 1 : 0, 0); 3262 } 3263 3264 /** 3265 * Make sure that clearing the form data removes the adapter from the 3266 * currently focused textfield if there is one. 3267 */ 3268 public void clearFormData() { 3269 checkThread(); 3270 if (inEditingMode()) { 3271 AutoCompleteAdapter adapter = null; 3272 mWebTextView.setAdapterCustom(adapter); 3273 } 3274 } 3275 3276 /** 3277 * Tell the WebView to clear its internal back/forward list. 3278 */ 3279 public void clearHistory() { 3280 checkThread(); 3281 mCallbackProxy.getBackForwardList().setClearPending(); 3282 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3283 } 3284 3285 /** 3286 * Clear the SSL preferences table stored in response to proceeding with SSL 3287 * certificate errors. 3288 */ 3289 public void clearSslPreferences() { 3290 checkThread(); 3291 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3292 } 3293 3294 /** 3295 * Return the WebBackForwardList for this WebView. This contains the 3296 * back/forward list for use in querying each item in the history stack. 3297 * This is a copy of the private WebBackForwardList so it contains only a 3298 * snapshot of the current state. Multiple calls to this method may return 3299 * different objects. The object returned from this method will not be 3300 * updated to reflect any new state. 3301 */ 3302 public WebBackForwardList copyBackForwardList() { 3303 checkThread(); 3304 return mCallbackProxy.getBackForwardList().clone(); 3305 } 3306 3307 /* 3308 * Highlight and scroll to the next occurance of String in findAll. 3309 * Wraps the page infinitely, and scrolls. Must be called after 3310 * calling findAll. 3311 * 3312 * @param forward Direction to search. 3313 */ 3314 public void findNext(boolean forward) { 3315 checkThread(); 3316 if (0 == mNativeClass) return; // client isn't initialized 3317 nativeFindNext(forward); 3318 } 3319 3320 /* 3321 * Find all instances of find on the page and highlight them. 3322 * @param find String to find. 3323 * @return int The number of occurances of the String "find" 3324 * that were found. 3325 */ 3326 public int findAll(String find) { 3327 checkThread(); 3328 if (0 == mNativeClass) return 0; // client isn't initialized 3329 int result = find != null ? nativeFindAll(find.toLowerCase(), 3330 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3331 invalidate(); 3332 mLastFind = find; 3333 return result; 3334 } 3335 3336 /** 3337 * Start an ActionMode for finding text in this WebView. Only works if this 3338 * WebView is attached to the view system. 3339 * @param text If non-null, will be the initial text to search for. 3340 * Otherwise, the last String searched for in this WebView will 3341 * be used to start. 3342 * @param showIme If true, show the IME, assuming the user will begin typing. 3343 * If false and text is non-null, perform a find all. 3344 * @return boolean True if the find dialog is shown, false otherwise. 3345 */ 3346 public boolean showFindDialog(String text, boolean showIme) { 3347 checkThread(); 3348 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3349 if (getParent() == null || startActionMode(callback) == null) { 3350 // Could not start the action mode, so end Find on page 3351 return false; 3352 } 3353 mFindCallback = callback; 3354 setFindIsUp(true); 3355 mFindCallback.setWebView(this); 3356 if (showIme) { 3357 mFindCallback.showSoftInput(); 3358 } else if (text != null) { 3359 mFindCallback.setText(text); 3360 mFindCallback.findAll(); 3361 return true; 3362 } 3363 if (text == null) { 3364 text = mLastFind; 3365 } 3366 if (text != null) { 3367 mFindCallback.setText(text); 3368 } 3369 return true; 3370 } 3371 3372 /** 3373 * Keep track of the find callback so that we can remove its titlebar if 3374 * necessary. 3375 */ 3376 private FindActionModeCallback mFindCallback; 3377 3378 /** 3379 * Toggle whether the find dialog is showing, for both native and Java. 3380 */ 3381 private void setFindIsUp(boolean isUp) { 3382 mFindIsUp = isUp; 3383 if (0 == mNativeClass) return; // client isn't initialized 3384 nativeSetFindIsUp(isUp); 3385 } 3386 3387 /** 3388 * Return the index of the currently highlighted match. 3389 */ 3390 int findIndex() { 3391 if (0 == mNativeClass) return -1; 3392 return nativeFindIndex(); 3393 } 3394 3395 // Used to know whether the find dialog is open. Affects whether 3396 // or not we draw the highlights for matches. 3397 private boolean mFindIsUp; 3398 3399 // Keep track of the last string sent, so we can search again when find is 3400 // reopened. 3401 private String mLastFind; 3402 3403 /** 3404 * Return the first substring consisting of the address of a physical 3405 * location. Currently, only addresses in the United States are detected, 3406 * and consist of: 3407 * - a house number 3408 * - a street name 3409 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3410 * - a city name 3411 * - a state or territory, either spelled out or two-letter abbr. 3412 * - an optional 5 digit or 9 digit zip code. 3413 * 3414 * All names must be correctly capitalized, and the zip code, if present, 3415 * must be valid for the state. The street type must be a standard USPS 3416 * spelling or abbreviation. The state or territory must also be spelled 3417 * or abbreviated using USPS standards. The house number may not exceed 3418 * five digits. 3419 * @param addr The string to search for addresses. 3420 * 3421 * @return the address, or if no address is found, return null. 3422 */ 3423 public static String findAddress(String addr) { 3424 checkThread(); 3425 return findAddress(addr, false); 3426 } 3427 3428 /** 3429 * @hide 3430 * Return the first substring consisting of the address of a physical 3431 * location. Currently, only addresses in the United States are detected, 3432 * and consist of: 3433 * - a house number 3434 * - a street name 3435 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3436 * - a city name 3437 * - a state or territory, either spelled out or two-letter abbr. 3438 * - an optional 5 digit or 9 digit zip code. 3439 * 3440 * Names are optionally capitalized, and the zip code, if present, 3441 * must be valid for the state. The street type must be a standard USPS 3442 * spelling or abbreviation. The state or territory must also be spelled 3443 * or abbreviated using USPS standards. The house number may not exceed 3444 * five digits. 3445 * @param addr The string to search for addresses. 3446 * @param caseInsensitive addr Set to true to make search ignore case. 3447 * 3448 * @return the address, or if no address is found, return null. 3449 */ 3450 public static String findAddress(String addr, boolean caseInsensitive) { 3451 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3452 } 3453 3454 /* 3455 * Clear the highlighting surrounding text matches created by findAll. 3456 */ 3457 public void clearMatches() { 3458 checkThread(); 3459 if (mNativeClass == 0) 3460 return; 3461 nativeSetFindIsEmpty(); 3462 invalidate(); 3463 } 3464 3465 /** 3466 * Called when the find ActionMode ends. 3467 */ 3468 void notifyFindDialogDismissed() { 3469 mFindCallback = null; 3470 if (mWebViewCore == null) { 3471 return; 3472 } 3473 clearMatches(); 3474 setFindIsUp(false); 3475 // Now that the dialog has been removed, ensure that we scroll to a 3476 // location that is not beyond the end of the page. 3477 pinScrollTo(mScrollX, mScrollY, false, 0); 3478 invalidate(); 3479 } 3480 3481 /** 3482 * Query the document to see if it contains any image references. The 3483 * message object will be dispatched with arg1 being set to 1 if images 3484 * were found and 0 if the document does not reference any images. 3485 * @param response The message that will be dispatched with the result. 3486 */ 3487 public void documentHasImages(Message response) { 3488 checkThread(); 3489 if (response == null) { 3490 return; 3491 } 3492 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3493 } 3494 3495 /** 3496 * Request the scroller to abort any ongoing animation 3497 * 3498 * @hide 3499 */ 3500 public void stopScroll() { 3501 mScroller.forceFinished(true); 3502 mLastVelocity = 0; 3503 } 3504 3505 @Override 3506 public void computeScroll() { 3507 if (mScroller.computeScrollOffset()) { 3508 int oldX = mScrollX; 3509 int oldY = mScrollY; 3510 int x = mScroller.getCurrX(); 3511 int y = mScroller.getCurrY(); 3512 invalidate(); // So we draw again 3513 3514 if (!mScroller.isFinished()) { 3515 int rangeX = computeMaxScrollX(); 3516 int rangeY = computeMaxScrollY(); 3517 int overflingDistance = mOverflingDistance; 3518 3519 // Use the layer's scroll data if needed. 3520 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3521 oldX = mScrollingLayerRect.left; 3522 oldY = mScrollingLayerRect.top; 3523 rangeX = mScrollingLayerRect.right; 3524 rangeY = mScrollingLayerRect.bottom; 3525 // No overscrolling for layers. 3526 overflingDistance = 0; 3527 } 3528 3529 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3530 rangeX, rangeY, 3531 overflingDistance, overflingDistance, false); 3532 3533 if (mOverScrollGlow != null) { 3534 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3535 } 3536 } else { 3537 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3538 mScrollX = x; 3539 mScrollY = y; 3540 } else { 3541 // Update the layer position instead of WebView. 3542 nativeScrollLayer(mScrollingLayer, x, y); 3543 mScrollingLayerRect.left = x; 3544 mScrollingLayerRect.top = y; 3545 } 3546 abortAnimation(); 3547 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3548 nativeSetIsScrolling(false); 3549 if (!mBlockWebkitViewMessages) { 3550 WebViewCore.resumePriority(); 3551 if (!mSelectingText) { 3552 WebViewCore.resumeUpdatePicture(mWebViewCore); 3553 } 3554 } 3555 if (oldX != mScrollX || oldY != mScrollY) { 3556 sendOurVisibleRect(); 3557 } 3558 } 3559 } else { 3560 super.computeScroll(); 3561 } 3562 } 3563 3564 private static int computeDuration(int dx, int dy) { 3565 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3566 int duration = distance * 1000 / STD_SPEED; 3567 return Math.min(duration, MAX_DURATION); 3568 } 3569 3570 // helper to pin the scrollBy parameters (already in view coordinates) 3571 // returns true if the scroll was changed 3572 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3573 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3574 } 3575 // helper to pin the scrollTo parameters (already in view coordinates) 3576 // returns true if the scroll was changed 3577 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3578 x = pinLocX(x); 3579 y = pinLocY(y); 3580 int dx = x - mScrollX; 3581 int dy = y - mScrollY; 3582 3583 if ((dx | dy) == 0) { 3584 return false; 3585 } 3586 abortAnimation(); 3587 if (animate) { 3588 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3589 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3590 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3591 awakenScrollBars(mScroller.getDuration()); 3592 invalidate(); 3593 } else { 3594 scrollTo(x, y); 3595 } 3596 return true; 3597 } 3598 3599 // Scale from content to view coordinates, and pin. 3600 // Also called by jni webview.cpp 3601 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3602 if (mDrawHistory) { 3603 // disallow WebView to change the scroll position as History Picture 3604 // is used in the view system. 3605 // TODO: as we switchOutDrawHistory when trackball or navigation 3606 // keys are hit, this should be safe. Right? 3607 return false; 3608 } 3609 cx = contentToViewDimension(cx); 3610 cy = contentToViewDimension(cy); 3611 if (mHeightCanMeasure) { 3612 // move our visible rect according to scroll request 3613 if (cy != 0) { 3614 Rect tempRect = new Rect(); 3615 calcOurVisibleRect(tempRect); 3616 tempRect.offset(cx, cy); 3617 requestRectangleOnScreen(tempRect); 3618 } 3619 // FIXME: We scroll horizontally no matter what because currently 3620 // ScrollView and ListView will not scroll horizontally. 3621 // FIXME: Why do we only scroll horizontally if there is no 3622 // vertical scroll? 3623// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3624 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3625 } else { 3626 return pinScrollBy(cx, cy, animate, 0); 3627 } 3628 } 3629 3630 /** 3631 * Called by CallbackProxy when the page starts loading. 3632 * @param url The URL of the page which has started loading. 3633 */ 3634 /* package */ void onPageStarted(String url) { 3635 // every time we start a new page, we want to reset the 3636 // WebView certificate: if the new site is secure, we 3637 // will reload it and get a new certificate set; 3638 // if the new site is not secure, the certificate must be 3639 // null, and that will be the case 3640 setCertificate(null); 3641 3642 // reset the flag since we set to true in if need after 3643 // loading is see onPageFinished(Url) 3644 mAccessibilityScriptInjected = false; 3645 } 3646 3647 /** 3648 * Called by CallbackProxy when the page finishes loading. 3649 * @param url The URL of the page which has finished loading. 3650 */ 3651 /* package */ void onPageFinished(String url) { 3652 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3653 // If the user is now on a different page, or has scrolled the page 3654 // past the point where the title bar is offscreen, ignore the 3655 // scroll request. 3656 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3657 && mScrollX == 0 && mScrollY == 0) { 3658 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3659 SLIDE_TITLE_DURATION); 3660 } 3661 mPageThatNeedsToSlideTitleBarOffScreen = null; 3662 } 3663 mZoomManager.onPageFinished(url); 3664 injectAccessibilityForUrl(url); 3665 } 3666 3667 /** 3668 * This method injects accessibility in the loaded document if accessibility 3669 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3670 * If no URL specific script is found or JavaScript is disabled we fallback to 3671 * the default {@link AccessibilityInjector} implementation. 3672 * </p> 3673 * If the URL has the "axs" paramter set to 1 it has already done the 3674 * script injection so we do nothing. If the parameter is set to 0 3675 * the URL opts out accessibility script injection so we fall back to 3676 * the default {@link AccessibilityInjector}. 3677 * </p> 3678 * Note: If the user has not opted-in the accessibility script injection no scripts 3679 * are injected rather the default {@link AccessibilityInjector} implementation 3680 * is used. 3681 * 3682 * @param url The URL loaded by this {@link WebView}. 3683 */ 3684 private void injectAccessibilityForUrl(String url) { 3685 if (mWebViewCore == null) { 3686 return; 3687 } 3688 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3689 3690 if (!accessibilityManager.isEnabled()) { 3691 // it is possible that accessibility was turned off between reloads 3692 ensureAccessibilityScriptInjectorInstance(false); 3693 return; 3694 } 3695 3696 if (!getSettings().getJavaScriptEnabled()) { 3697 // no JS so we fallback to the basic buil-in support 3698 ensureAccessibilityScriptInjectorInstance(true); 3699 return; 3700 } 3701 3702 // check the URL "axs" parameter to choose appropriate action 3703 int axsParameterValue = getAxsUrlParameterValue(url); 3704 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3705 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3706 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3707 if (onDeviceScriptInjectionEnabled) { 3708 ensureAccessibilityScriptInjectorInstance(false); 3709 // neither script injected nor script injection opted out => we inject 3710 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3711 // TODO: Set this flag after successfull script injection. Maybe upon injection 3712 // the chooser should update the meta tag and we check it to declare success 3713 mAccessibilityScriptInjected = true; 3714 } else { 3715 // injection disabled so we fallback to the basic built-in support 3716 ensureAccessibilityScriptInjectorInstance(true); 3717 } 3718 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3719 // injection opted out so we fallback to the basic buil-in support 3720 ensureAccessibilityScriptInjectorInstance(true); 3721 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3722 ensureAccessibilityScriptInjectorInstance(false); 3723 // the URL provides accessibility but we still need to add our generic script 3724 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3725 } else { 3726 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3727 } 3728 } 3729 3730 /** 3731 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3732 * 3733 * @param present True to ensure an insance, false to ensure no instance. 3734 */ 3735 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3736 if (present) { 3737 if (mAccessibilityInjector == null) { 3738 mAccessibilityInjector = new AccessibilityInjector(this); 3739 } 3740 } else { 3741 mAccessibilityInjector = null; 3742 } 3743 } 3744 3745 /** 3746 * Gets the "axs" URL parameter value. 3747 * 3748 * @param url A url to fetch the paramter from. 3749 * @return The parameter value if such, -1 otherwise. 3750 */ 3751 private int getAxsUrlParameterValue(String url) { 3752 if (mMatchAxsUrlParameterPattern == null) { 3753 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3754 } 3755 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3756 if (matcher.find()) { 3757 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3758 return Integer.parseInt(keyValuePair.split("=")[1]); 3759 } 3760 return -1; 3761 } 3762 3763 /** 3764 * The URL of a page that sent a message to scroll the title bar off screen. 3765 * 3766 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3767 * title bar off the screen. Sometimes, the scroll position is set before 3768 * the page finishes loading. Rather than scrolling while the page is still 3769 * loading, keep track of the URL and new scroll position so we can perform 3770 * the scroll once the page finishes loading. 3771 */ 3772 private String mPageThatNeedsToSlideTitleBarOffScreen; 3773 3774 /** 3775 * The destination Y scroll position to be used when the page finishes 3776 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3777 */ 3778 private int mYDistanceToSlideTitleOffScreen; 3779 3780 // scale from content to view coordinates, and pin 3781 // return true if pin caused the final x/y different than the request cx/cy, 3782 // and a future scroll may reach the request cx/cy after our size has 3783 // changed 3784 // return false if the view scroll to the exact position as it is requested, 3785 // where negative numbers are taken to mean 0 3786 private boolean setContentScrollTo(int cx, int cy) { 3787 if (mDrawHistory) { 3788 // disallow WebView to change the scroll position as History Picture 3789 // is used in the view system. 3790 // One known case where this is called is that WebCore tries to 3791 // restore the scroll position. As history Picture already uses the 3792 // saved scroll position, it is ok to skip this. 3793 return false; 3794 } 3795 int vx; 3796 int vy; 3797 if ((cx | cy) == 0) { 3798 // If the page is being scrolled to (0,0), do not add in the title 3799 // bar's height, and simply scroll to (0,0). (The only other work 3800 // in contentToView_ is to multiply, so this would not change 0.) 3801 vx = 0; 3802 vy = 0; 3803 } else { 3804 vx = contentToViewX(cx); 3805 vy = contentToViewY(cy); 3806 } 3807// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3808// vx + " " + vy + "]"); 3809 // Some mobile sites attempt to scroll the title bar off the page by 3810 // scrolling to (0,1). If we are at the top left corner of the 3811 // page, assume this is an attempt to scroll off the title bar, and 3812 // animate the title bar off screen slowly enough that the user can see 3813 // it. 3814 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3815 && mTitleBar != null) { 3816 // FIXME: 100 should be defined somewhere as our max progress. 3817 if (getProgress() < 100) { 3818 // Wait to scroll the title bar off screen until the page has 3819 // finished loading. Keep track of the URL and the destination 3820 // Y position 3821 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3822 mYDistanceToSlideTitleOffScreen = vy; 3823 } else { 3824 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3825 } 3826 // Since we are animating, we have not yet reached the desired 3827 // scroll position. Do not return true to request another attempt 3828 return false; 3829 } 3830 pinScrollTo(vx, vy, false, 0); 3831 // If the request was to scroll to a negative coordinate, treat it as if 3832 // it was a request to scroll to 0 3833 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3834 return true; 3835 } else { 3836 return false; 3837 } 3838 } 3839 3840 // scale from content to view coordinates, and pin 3841 private void spawnContentScrollTo(int cx, int cy) { 3842 if (mDrawHistory) { 3843 // disallow WebView to change the scroll position as History Picture 3844 // is used in the view system. 3845 return; 3846 } 3847 int vx = contentToViewX(cx); 3848 int vy = contentToViewY(cy); 3849 pinScrollTo(vx, vy, true, 0); 3850 } 3851 3852 /** 3853 * These are from webkit, and are in content coordinate system (unzoomed) 3854 */ 3855 private void contentSizeChanged(boolean updateLayout) { 3856 // suppress 0,0 since we usually see real dimensions soon after 3857 // this avoids drawing the prev content in a funny place. If we find a 3858 // way to consolidate these notifications, this check may become 3859 // obsolete 3860 if ((mContentWidth | mContentHeight) == 0) { 3861 return; 3862 } 3863 3864 if (mHeightCanMeasure) { 3865 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3866 || updateLayout) { 3867 requestLayout(); 3868 } 3869 } else if (mWidthCanMeasure) { 3870 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3871 || updateLayout) { 3872 requestLayout(); 3873 } 3874 } else { 3875 // If we don't request a layout, try to send our view size to the 3876 // native side to ensure that WebCore has the correct dimensions. 3877 sendViewSizeZoom(false); 3878 } 3879 } 3880 3881 /** 3882 * Set the WebViewClient that will receive various notifications and 3883 * requests. This will replace the current handler. 3884 * @param client An implementation of WebViewClient. 3885 */ 3886 public void setWebViewClient(WebViewClient client) { 3887 checkThread(); 3888 mCallbackProxy.setWebViewClient(client); 3889 } 3890 3891 /** 3892 * Gets the WebViewClient 3893 * @return the current WebViewClient instance. 3894 * 3895 *@hide pending API council approval. 3896 */ 3897 public WebViewClient getWebViewClient() { 3898 return mCallbackProxy.getWebViewClient(); 3899 } 3900 3901 /** 3902 * Register the interface to be used when content can not be handled by 3903 * the rendering engine, and should be downloaded instead. This will replace 3904 * the current handler. 3905 * @param listener An implementation of DownloadListener. 3906 */ 3907 public void setDownloadListener(DownloadListener listener) { 3908 checkThread(); 3909 mCallbackProxy.setDownloadListener(listener); 3910 } 3911 3912 /** 3913 * Set the chrome handler. This is an implementation of WebChromeClient for 3914 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3915 * This will replace the current handler. 3916 * @param client An implementation of WebChromeClient. 3917 */ 3918 public void setWebChromeClient(WebChromeClient client) { 3919 checkThread(); 3920 mCallbackProxy.setWebChromeClient(client); 3921 } 3922 3923 /** 3924 * Gets the chrome handler. 3925 * @return the current WebChromeClient instance. 3926 * 3927 * @hide API council approval. 3928 */ 3929 public WebChromeClient getWebChromeClient() { 3930 return mCallbackProxy.getWebChromeClient(); 3931 } 3932 3933 /** 3934 * Set the back/forward list client. This is an implementation of 3935 * WebBackForwardListClient for handling new items and changes in the 3936 * history index. 3937 * @param client An implementation of WebBackForwardListClient. 3938 * {@hide} 3939 */ 3940 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3941 mCallbackProxy.setWebBackForwardListClient(client); 3942 } 3943 3944 /** 3945 * Gets the WebBackForwardListClient. 3946 * {@hide} 3947 */ 3948 public WebBackForwardListClient getWebBackForwardListClient() { 3949 return mCallbackProxy.getWebBackForwardListClient(); 3950 } 3951 3952 /** 3953 * Set the Picture listener. This is an interface used to receive 3954 * notifications of a new Picture. 3955 * @param listener An implementation of WebView.PictureListener. 3956 * @deprecated This method is now obsolete. 3957 */ 3958 @Deprecated 3959 public void setPictureListener(PictureListener listener) { 3960 checkThread(); 3961 mPictureListener = listener; 3962 } 3963 3964 /** 3965 * {@hide} 3966 */ 3967 /* FIXME: Debug only! Remove for SDK! */ 3968 public void externalRepresentation(Message callback) { 3969 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3970 } 3971 3972 /** 3973 * {@hide} 3974 */ 3975 /* FIXME: Debug only! Remove for SDK! */ 3976 public void documentAsText(Message callback) { 3977 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3978 } 3979 3980 /** 3981 * Use this function to bind an object to JavaScript so that the 3982 * methods can be accessed from JavaScript. 3983 * <p><strong>IMPORTANT:</strong> 3984 * <ul> 3985 * <li> Using addJavascriptInterface() allows JavaScript to control your 3986 * application. This can be a very useful feature or a dangerous security 3987 * issue. When the HTML in the WebView is untrustworthy (for example, part 3988 * or all of the HTML is provided by some person or process), then an 3989 * attacker could inject HTML that will execute your code and possibly any 3990 * code of the attacker's choosing.<br> 3991 * Do not use addJavascriptInterface() unless all of the HTML in this 3992 * WebView was written by you.</li> 3993 * <li> The Java object that is bound runs in another thread and not in 3994 * the thread that it was constructed in.</li> 3995 * </ul></p> 3996 * @param obj The class instance to bind to JavaScript, null instances are 3997 * ignored. 3998 * @param interfaceName The name to used to expose the instance in 3999 * JavaScript. 4000 */ 4001 public void addJavascriptInterface(Object obj, String interfaceName) { 4002 checkThread(); 4003 if (obj == null) { 4004 return; 4005 } 4006 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4007 arg.mObject = obj; 4008 arg.mInterfaceName = interfaceName; 4009 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4010 } 4011 4012 /** 4013 * Removes a previously added JavaScript interface with the given name. 4014 * @param interfaceName The name of the interface to remove. 4015 */ 4016 public void removeJavascriptInterface(String interfaceName) { 4017 checkThread(); 4018 if (mWebViewCore != null) { 4019 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4020 arg.mInterfaceName = interfaceName; 4021 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4022 } 4023 } 4024 4025 /** 4026 * Return the WebSettings object used to control the settings for this 4027 * WebView. 4028 * @return A WebSettings object that can be used to control this WebView's 4029 * settings. 4030 */ 4031 public WebSettings getSettings() { 4032 checkThread(); 4033 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4034 } 4035 4036 /** 4037 * Return the list of currently loaded plugins. 4038 * @return The list of currently loaded plugins. 4039 * 4040 * @hide 4041 * @deprecated This was used for Gears, which has been deprecated. 4042 */ 4043 @Deprecated 4044 public static synchronized PluginList getPluginList() { 4045 checkThread(); 4046 return new PluginList(); 4047 } 4048 4049 /** 4050 * @hide 4051 * @deprecated This was used for Gears, which has been deprecated. 4052 */ 4053 @Deprecated 4054 public void refreshPlugins(boolean reloadOpenPages) { 4055 checkThread(); 4056 } 4057 4058 //------------------------------------------------------------------------- 4059 // Override View methods 4060 //------------------------------------------------------------------------- 4061 4062 @Override 4063 protected void finalize() throws Throwable { 4064 try { 4065 if (mNativeClass != 0) { 4066 mPrivateHandler.post(new Runnable() { 4067 @Override 4068 public void run() { 4069 destroy(); 4070 } 4071 }); 4072 } 4073 } finally { 4074 super.finalize(); 4075 } 4076 } 4077 4078 @Override 4079 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4080 if (child == mTitleBar) { 4081 // When drawing the title bar, move it horizontally to always show 4082 // at the top of the WebView. 4083 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4084 int newTop = 0; 4085 if (mTitleGravity == Gravity.NO_GRAVITY) { 4086 newTop = Math.min(0, mScrollY); 4087 } else if (mTitleGravity == Gravity.TOP) { 4088 newTop = mScrollY; 4089 } 4090 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4091 mTitleBar.setTop(newTop); 4092 } 4093 return super.drawChild(canvas, child, drawingTime); 4094 } 4095 4096 private void drawContent(Canvas canvas, boolean drawRings) { 4097 // Update the buttons in the picture, so when we draw the picture 4098 // to the screen, they are in the correct state. 4099 // Tell the native side if user is a) touching the screen, 4100 // b) pressing the trackball down, or c) pressing the enter key 4101 // If the cursor is on a button, we need to draw it in the pressed 4102 // state. 4103 // If mNativeClass is 0, we should not reach here, so we do not 4104 // need to check it again. 4105 boolean pressed = (mTouchMode == TOUCH_SHORTPRESS_START_MODE 4106 || mTouchMode == TOUCH_INIT_MODE 4107 || mTouchMode == TOUCH_SHORTPRESS_MODE); 4108 recordButtons(canvas, 4109 hasFocus() && hasWindowFocus(), (pressed && !USE_WEBKIT_RINGS) 4110 || mTrackballDown || mGotCenterDown, false); 4111 drawCoreAndCursorRing(canvas, mBackgroundColor, 4112 mDrawCursorRing && drawRings); 4113 } 4114 4115 /** 4116 * Draw the background when beyond bounds 4117 * @param canvas Canvas to draw into 4118 */ 4119 private void drawOverScrollBackground(Canvas canvas) { 4120 if (mOverScrollBackground == null) { 4121 mOverScrollBackground = new Paint(); 4122 Bitmap bm = BitmapFactory.decodeResource( 4123 mContext.getResources(), 4124 com.android.internal.R.drawable.status_bar_background); 4125 mOverScrollBackground.setShader(new BitmapShader(bm, 4126 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4127 mOverScrollBorder = new Paint(); 4128 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4129 mOverScrollBorder.setStrokeWidth(0); 4130 mOverScrollBorder.setColor(0xffbbbbbb); 4131 } 4132 4133 int top = 0; 4134 int right = computeRealHorizontalScrollRange(); 4135 int bottom = top + computeRealVerticalScrollRange(); 4136 // first draw the background and anchor to the top of the view 4137 canvas.save(); 4138 canvas.translate(mScrollX, mScrollY); 4139 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4140 - mScrollY, Region.Op.DIFFERENCE); 4141 canvas.drawPaint(mOverScrollBackground); 4142 canvas.restore(); 4143 // then draw the border 4144 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4145 // next clip the region for the content 4146 canvas.clipRect(0, top, right, bottom); 4147 } 4148 4149 @Override 4150 protected void onDraw(Canvas canvas) { 4151 // if mNativeClass is 0, the WebView is either destroyed or not 4152 // initialized. In either case, just draw the background color and return 4153 if (mNativeClass == 0) { 4154 canvas.drawColor(mBackgroundColor); 4155 return; 4156 } 4157 4158 // if both mContentWidth and mContentHeight are 0, it means there is no 4159 // valid Picture passed to WebView yet. This can happen when WebView 4160 // just starts. Draw the background and return. 4161 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4162 canvas.drawColor(mBackgroundColor); 4163 return; 4164 } 4165 4166 if (canvas.isHardwareAccelerated()) { 4167 mZoomManager.setHardwareAccelerated(); 4168 } 4169 4170 int saveCount = canvas.save(); 4171 if (mInOverScrollMode && !getSettings() 4172 .getUseWebViewBackgroundForOverscrollBackground()) { 4173 drawOverScrollBackground(canvas); 4174 } 4175 if (mTitleBar != null) { 4176 canvas.translate(0, getTitleHeight()); 4177 } 4178 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4179 && (mTouchMode == TOUCH_INIT_MODE 4180 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4181 || mTouchMode == TOUCH_SHORTPRESS_MODE 4182 || mTouchMode == TOUCH_DONE_MODE); 4183 boolean drawNativeRings = !drawJavaRings; 4184 if (USE_WEBKIT_RINGS) { 4185 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4186 } 4187 drawContent(canvas, drawNativeRings); 4188 canvas.restoreToCount(saveCount); 4189 4190 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4191 invalidate(); 4192 } 4193 mWebViewCore.signalRepaintDone(); 4194 4195 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4196 invalidate(); 4197 } 4198 4199 // paint the highlight in the end 4200 if (drawJavaRings) { 4201 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4202 if (delay < ViewConfiguration.getTapTimeout()) { 4203 Rect r = mTouchHighlightRegion.getBounds(); 4204 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4205 } else { 4206 if (mTouchHightlightPaint == null) { 4207 mTouchHightlightPaint = new Paint(); 4208 mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR); 4209 } 4210 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4211 Rect r = new Rect(); 4212 while (iter.next(r)) { 4213 canvas.drawRect(r, mTouchHightlightPaint); 4214 } 4215 } 4216 } 4217 if (DEBUG_TOUCH_HIGHLIGHT) { 4218 if (getSettings().getNavDump()) { 4219 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4220 if (mTouchCrossHairColor == null) { 4221 mTouchCrossHairColor = new Paint(); 4222 mTouchCrossHairColor.setColor(Color.RED); 4223 } 4224 canvas.drawLine(mTouchHighlightX - mNavSlop, 4225 mTouchHighlightY - mNavSlop, mTouchHighlightX 4226 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4227 + 1, mTouchCrossHairColor); 4228 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4229 mTouchHighlightY - mNavSlop, mTouchHighlightX 4230 - mNavSlop, 4231 mTouchHighlightY + mNavSlop + 1, 4232 mTouchCrossHairColor); 4233 } 4234 } 4235 } 4236 } 4237 4238 private void removeTouchHighlight() { 4239 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4240 mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS); 4241 setTouchHighlightRects(null); 4242 } 4243 4244 @Override 4245 public void setLayoutParams(ViewGroup.LayoutParams params) { 4246 if (params.height == LayoutParams.WRAP_CONTENT) { 4247 mWrapContent = true; 4248 } 4249 super.setLayoutParams(params); 4250 } 4251 4252 @Override 4253 public boolean performLongClick() { 4254 // performLongClick() is the result of a delayed message. If we switch 4255 // to windows overview, the WebView will be temporarily removed from the 4256 // view system. In that case, do nothing. 4257 if (getParent() == null) return false; 4258 4259 // A multi-finger gesture can look like a long press; make sure we don't take 4260 // long press actions if we're scaling. 4261 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4262 if (detector != null && detector.isInProgress()) { 4263 return false; 4264 } 4265 4266 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4267 // Send the click so that the textfield is in focus 4268 centerKeyPressOnTextField(); 4269 rebuildWebTextView(); 4270 } else { 4271 clearTextEntry(); 4272 } 4273 if (inEditingMode()) { 4274 // Since we just called rebuildWebTextView, the layout is not set 4275 // properly. Update it so it can correctly find the word to select. 4276 mWebTextView.ensureLayout(); 4277 // Provide a touch down event to WebTextView, which will allow it 4278 // to store the location to use in performLongClick. 4279 AbsoluteLayout.LayoutParams params 4280 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4281 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4282 mLastTouchTime, MotionEvent.ACTION_DOWN, 4283 mLastTouchX - params.x + mScrollX, 4284 mLastTouchY - params.y + mScrollY, 0); 4285 mWebTextView.dispatchTouchEvent(fake); 4286 return mWebTextView.performLongClick(); 4287 } 4288 if (mSelectingText) return false; // long click does nothing on selection 4289 /* if long click brings up a context menu, the super function 4290 * returns true and we're done. Otherwise, nothing happened when 4291 * the user clicked. */ 4292 if (super.performLongClick()) { 4293 return true; 4294 } 4295 /* In the case where the application hasn't already handled the long 4296 * click action, look for a word under the click. If one is found, 4297 * animate the text selection into view. 4298 * FIXME: no animation code yet */ 4299 final boolean isSelecting = selectText(); 4300 if (isSelecting) { 4301 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4302 } 4303 return isSelecting; 4304 } 4305 4306 /** 4307 * Select the word at the last click point. 4308 * 4309 * @hide pending API council approval 4310 */ 4311 public boolean selectText() { 4312 int x = viewToContentX(mLastTouchX + mScrollX); 4313 int y = viewToContentY(mLastTouchY + mScrollY); 4314 return selectText(x, y); 4315 } 4316 4317 /** 4318 * Select the word at the indicated content coordinates. 4319 */ 4320 boolean selectText(int x, int y) { 4321 if (!setUpSelect(true, x, y)) { 4322 return false; 4323 } 4324 nativeSetExtendSelection(); 4325 mDrawSelectionPointer = false; 4326 mTouchMode = TOUCH_DRAG_MODE; 4327 return true; 4328 } 4329 4330 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4331 4332 @Override 4333 protected void onConfigurationChanged(Configuration newConfig) { 4334 if (mSelectingText && mOrientation != newConfig.orientation) { 4335 selectionDone(); 4336 } 4337 mOrientation = newConfig.orientation; 4338 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4339 } 4340 4341 /** 4342 * Keep track of the Callback so we can end its ActionMode or remove its 4343 * titlebar. 4344 */ 4345 private SelectActionModeCallback mSelectCallback; 4346 4347 // These values are possible options for didUpdateWebTextViewDimensions. 4348 private static final int FULLY_ON_SCREEN = 0; 4349 private static final int INTERSECTS_SCREEN = 1; 4350 private static final int ANYWHERE = 2; 4351 4352 /** 4353 * Check to see if the focused textfield/textarea is still on screen. If it 4354 * is, update the the dimensions and location of WebTextView. Otherwise, 4355 * remove the WebTextView. Should be called when the zoom level changes. 4356 * @param intersection How to determine whether the textfield/textarea is 4357 * still on screen. 4358 * @return boolean True if the textfield/textarea is still on screen and the 4359 * dimensions/location of WebTextView have been updated. 4360 */ 4361 private boolean didUpdateWebTextViewDimensions(int intersection) { 4362 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4363 Rect vBox = contentToViewRect(contentBounds); 4364 Rect visibleRect = new Rect(); 4365 calcOurVisibleRect(visibleRect); 4366 // If the textfield is on screen, place the WebTextView in 4367 // its new place, accounting for our new scroll/zoom values, 4368 // and adjust its textsize. 4369 boolean onScreen; 4370 switch (intersection) { 4371 case FULLY_ON_SCREEN: 4372 onScreen = visibleRect.contains(vBox); 4373 break; 4374 case INTERSECTS_SCREEN: 4375 onScreen = Rect.intersects(visibleRect, vBox); 4376 break; 4377 case ANYWHERE: 4378 onScreen = true; 4379 break; 4380 default: 4381 throw new AssertionError( 4382 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4383 } 4384 if (onScreen) { 4385 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4386 vBox.height()); 4387 mWebTextView.updateTextSize(); 4388 updateWebTextViewPadding(); 4389 return true; 4390 } else { 4391 // The textfield is now off screen. The user probably 4392 // was not zooming to see the textfield better. Remove 4393 // the WebTextView. If the user types a key, and the 4394 // textfield is still in focus, we will reconstruct 4395 // the WebTextView and scroll it back on screen. 4396 mWebTextView.remove(); 4397 return false; 4398 } 4399 } 4400 4401 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4402 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4403 if (mNativeClass == 0) 4404 return; 4405 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4406 isPictureAfterFirstLayout, registerPageSwapCallback); 4407 if (mHTML5VideoViewProxy != null) { 4408 mHTML5VideoViewProxy.setBaseLayer(layer); 4409 } 4410 } 4411 4412 int getBaseLayer() { 4413 if (mNativeClass == 0) { 4414 return 0; 4415 } 4416 return nativeGetBaseLayer(); 4417 } 4418 4419 private void onZoomAnimationStart() { 4420 // If it is in password mode, turn it off so it does not draw misplaced. 4421 if (inEditingMode()) { 4422 mWebTextView.setVisibility(INVISIBLE); 4423 } 4424 } 4425 4426 private void onZoomAnimationEnd() { 4427 // adjust the edit text view if needed 4428 if (inEditingMode() 4429 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4430 // If it is a password field, start drawing the WebTextView once 4431 // again. 4432 mWebTextView.setVisibility(VISIBLE); 4433 } 4434 } 4435 4436 void onFixedLengthZoomAnimationStart() { 4437 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4438 onZoomAnimationStart(); 4439 } 4440 4441 void onFixedLengthZoomAnimationEnd() { 4442 if (!mBlockWebkitViewMessages && !mSelectingText) { 4443 WebViewCore.resumeUpdatePicture(mWebViewCore); 4444 } 4445 onZoomAnimationEnd(); 4446 } 4447 4448 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4449 Paint.DITHER_FLAG | 4450 Paint.SUBPIXEL_TEXT_FLAG; 4451 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4452 Paint.DITHER_FLAG; 4453 4454 private final DrawFilter mZoomFilter = 4455 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4456 // If we need to trade better quality for speed, set mScrollFilter to null 4457 private final DrawFilter mScrollFilter = 4458 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4459 4460 private void drawCoreAndCursorRing(Canvas canvas, int color, 4461 boolean drawCursorRing) { 4462 if (mDrawHistory) { 4463 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4464 canvas.drawPicture(mHistoryPicture); 4465 return; 4466 } 4467 if (mNativeClass == 0) return; 4468 4469 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4470 boolean animateScroll = ((!mScroller.isFinished() 4471 || mVelocityTracker != null) 4472 && (mTouchMode != TOUCH_DRAG_MODE || 4473 mHeldMotionless != MOTIONLESS_TRUE)) 4474 || mDeferTouchMode == TOUCH_DRAG_MODE; 4475 if (mTouchMode == TOUCH_DRAG_MODE) { 4476 if (mHeldMotionless == MOTIONLESS_PENDING) { 4477 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4478 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4479 mHeldMotionless = MOTIONLESS_FALSE; 4480 } 4481 if (mHeldMotionless == MOTIONLESS_FALSE) { 4482 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4483 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4484 mHeldMotionless = MOTIONLESS_PENDING; 4485 } 4486 } 4487 int saveCount = canvas.save(); 4488 if (animateZoom) { 4489 mZoomManager.animateZoom(canvas); 4490 } else if (!canvas.isHardwareAccelerated()) { 4491 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4492 } 4493 4494 boolean UIAnimationsRunning = false; 4495 // Currently for each draw we compute the animation values; 4496 // We may in the future decide to do that independently. 4497 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4498 UIAnimationsRunning = true; 4499 // If we have unfinished (or unstarted) animations, 4500 // we ask for a repaint. We only need to do this in software 4501 // rendering (with hardware rendering we already have a different 4502 // method of requesting a repaint) 4503 if (!canvas.isHardwareAccelerated()) 4504 invalidate(); 4505 } 4506 4507 // decide which adornments to draw 4508 int extras = DRAW_EXTRAS_NONE; 4509 if (mFindIsUp) { 4510 extras = DRAW_EXTRAS_FIND; 4511 } else if (mSelectingText && !USE_JAVA_TEXT_SELECTION) { 4512 extras = DRAW_EXTRAS_SELECTION; 4513 nativeSetSelectionPointer(mDrawSelectionPointer, 4514 mZoomManager.getInvScale(), 4515 mSelectX, mSelectY - getTitleHeight()); 4516 } else if (drawCursorRing) { 4517 extras = DRAW_EXTRAS_CURSOR_RING; 4518 } 4519 if (DebugFlags.WEB_VIEW) { 4520 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4521 + " mSelectingText=" + mSelectingText 4522 + " nativePageShouldHandleShiftAndArrows()=" 4523 + nativePageShouldHandleShiftAndArrows() 4524 + " animateZoom=" + animateZoom 4525 + " extras=" + extras); 4526 } 4527 4528 if (canvas.isHardwareAccelerated()) { 4529 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4530 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4531 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4532 4533 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4534 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4535 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4536 } 4537 4538 } else { 4539 DrawFilter df = null; 4540 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4541 df = mZoomFilter; 4542 } else if (animateScroll) { 4543 df = mScrollFilter; 4544 } 4545 canvas.setDrawFilter(df); 4546 // XXX: Revisit splitting content. Right now it causes a 4547 // synchronization problem with layers. 4548 int content = nativeDraw(canvas, color, extras, false); 4549 canvas.setDrawFilter(null); 4550 if (!mBlockWebkitViewMessages && content != 0) { 4551 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4552 } 4553 } 4554 4555 canvas.restoreToCount(saveCount); 4556 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4557 drawTextSelectionHandles(canvas); 4558 } 4559 4560 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4561 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4562 mTouchMode = TOUCH_SHORTPRESS_MODE; 4563 } 4564 } 4565 if (mFocusSizeChanged) { 4566 mFocusSizeChanged = false; 4567 // If we are zooming, this will get handled above, when the zoom 4568 // finishes. We also do not need to do this unless the WebTextView 4569 // is showing. With hardware acceleration, the pageSwapCallback() 4570 // updates the WebTextView position in sync with page swapping 4571 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4572 didUpdateWebTextViewDimensions(ANYWHERE); 4573 } 4574 } 4575 } 4576 4577 private void drawTextSelectionHandles(Canvas canvas) { 4578 if (mTextSelectionPaint == null) { 4579 mTextSelectionPaint = new Paint(); 4580 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4581 } 4582 mTextSelectionRegion.setEmpty(); 4583 nativeGetTextSelectionRegion(mTextSelectionRegion); 4584 Rect r = new Rect(); 4585 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4586 int start_x = -1; 4587 int start_y = -1; 4588 int end_x = -1; 4589 int end_y = -1; 4590 while (iter.next(r)) { 4591 r = new Rect( 4592 contentToViewDimension(r.left), 4593 contentToViewDimension(r.top), 4594 contentToViewDimension(r.right), 4595 contentToViewDimension(r.bottom)); 4596 // Regions are in order. First one is where selection starts, 4597 // last one is where it ends 4598 if (start_x < 0 || start_y < 0) { 4599 start_x = r.left; 4600 start_y = r.bottom; 4601 } 4602 end_x = r.right; 4603 end_y = r.bottom; 4604 canvas.drawRect(r, mTextSelectionPaint); 4605 } 4606 if (mSelectHandleLeft == null) { 4607 mSelectHandleLeft = mContext.getResources().getDrawable( 4608 com.android.internal.R.drawable.text_select_handle_left); 4609 } 4610 // Magic formula copied from TextView 4611 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4612 mSelectHandleLeft.setBounds(start_x, start_y, 4613 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4614 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4615 if (mSelectHandleRight == null) { 4616 mSelectHandleRight = mContext.getResources().getDrawable( 4617 com.android.internal.R.drawable.text_select_handle_right); 4618 } 4619 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4620 mSelectHandleRight.setBounds(end_x, end_y, 4621 end_x + mSelectHandleRight.getIntrinsicWidth(), 4622 end_y + mSelectHandleRight.getIntrinsicHeight()); 4623 mSelectHandleLeft.draw(canvas); 4624 mSelectHandleRight.draw(canvas); 4625 } 4626 4627 // draw history 4628 private boolean mDrawHistory = false; 4629 private Picture mHistoryPicture = null; 4630 private int mHistoryWidth = 0; 4631 private int mHistoryHeight = 0; 4632 4633 // Only check the flag, can be called from WebCore thread 4634 boolean drawHistory() { 4635 return mDrawHistory; 4636 } 4637 4638 int getHistoryPictureWidth() { 4639 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4640 } 4641 4642 // Should only be called in UI thread 4643 void switchOutDrawHistory() { 4644 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4645 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4646 mDrawHistory = false; 4647 mHistoryPicture = null; 4648 invalidate(); 4649 int oldScrollX = mScrollX; 4650 int oldScrollY = mScrollY; 4651 mScrollX = pinLocX(mScrollX); 4652 mScrollY = pinLocY(mScrollY); 4653 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4654 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4655 } else { 4656 sendOurVisibleRect(); 4657 } 4658 } 4659 } 4660 4661 WebViewCore.CursorData cursorData() { 4662 WebViewCore.CursorData result = cursorDataNoPosition(); 4663 Point position = nativeCursorPosition(); 4664 result.mX = position.x; 4665 result.mY = position.y; 4666 return result; 4667 } 4668 4669 WebViewCore.CursorData cursorDataNoPosition() { 4670 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4671 result.mMoveGeneration = nativeMoveGeneration(); 4672 result.mFrame = nativeCursorFramePointer(); 4673 return result; 4674 } 4675 4676 /** 4677 * Delete text from start to end in the focused textfield. If there is no 4678 * focus, or if start == end, silently fail. If start and end are out of 4679 * order, swap them. 4680 * @param start Beginning of selection to delete. 4681 * @param end End of selection to delete. 4682 */ 4683 /* package */ void deleteSelection(int start, int end) { 4684 mTextGeneration++; 4685 WebViewCore.TextSelectionData data 4686 = new WebViewCore.TextSelectionData(start, end); 4687 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4688 data); 4689 } 4690 4691 /** 4692 * Set the selection to (start, end) in the focused textfield. If start and 4693 * end are out of order, swap them. 4694 * @param start Beginning of selection. 4695 * @param end End of selection. 4696 */ 4697 /* package */ void setSelection(int start, int end) { 4698 if (mWebViewCore != null) { 4699 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4700 } 4701 } 4702 4703 @Override 4704 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4705 InputConnection connection = super.onCreateInputConnection(outAttrs); 4706 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4707 return connection; 4708 } 4709 4710 /** 4711 * Called in response to a message from webkit telling us that the soft 4712 * keyboard should be launched. 4713 */ 4714 private void displaySoftKeyboard(boolean isTextView) { 4715 InputMethodManager imm = (InputMethodManager) 4716 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4717 4718 // bring it back to the default level scale so that user can enter text 4719 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4720 if (zoom) { 4721 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4722 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4723 } 4724 if (isTextView) { 4725 rebuildWebTextView(); 4726 if (inEditingMode()) { 4727 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4728 if (zoom) { 4729 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4730 } 4731 return; 4732 } 4733 } 4734 // Used by plugins and contentEditable. 4735 // Also used if the navigation cache is out of date, and 4736 // does not recognize that a textfield is in focus. In that 4737 // case, use WebView as the targeted view. 4738 // see http://b/issue?id=2457459 4739 imm.showSoftInput(this, 0); 4740 } 4741 4742 // Called by WebKit to instruct the UI to hide the keyboard 4743 private void hideSoftKeyboard() { 4744 InputMethodManager imm = InputMethodManager.peekInstance(); 4745 if (imm != null && (imm.isActive(this) 4746 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4747 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4748 } 4749 } 4750 4751 /* 4752 * This method checks the current focus and cursor and potentially rebuilds 4753 * mWebTextView to have the appropriate properties, such as password, 4754 * multiline, and what text it contains. It also removes it if necessary. 4755 */ 4756 /* package */ void rebuildWebTextView() { 4757 // If the WebView does not have focus, do nothing until it gains focus. 4758 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4759 return; 4760 } 4761 boolean alreadyThere = inEditingMode(); 4762 // inEditingMode can only return true if mWebTextView is non-null, 4763 // so we can safely call remove() if (alreadyThere) 4764 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4765 if (alreadyThere) { 4766 mWebTextView.remove(); 4767 } 4768 return; 4769 } 4770 // At this point, we know we have found an input field, so go ahead 4771 // and create the WebTextView if necessary. 4772 if (mWebTextView == null) { 4773 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4774 // Initialize our generation number. 4775 mTextGeneration = 0; 4776 } 4777 mWebTextView.updateTextSize(); 4778 Rect visibleRect = new Rect(); 4779 calcOurContentVisibleRect(visibleRect); 4780 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4781 // should be in content coordinates. 4782 Rect bounds = nativeFocusCandidateNodeBounds(); 4783 Rect vBox = contentToViewRect(bounds); 4784 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4785 if (!Rect.intersects(bounds, visibleRect)) { 4786 revealSelection(); 4787 } 4788 String text = nativeFocusCandidateText(); 4789 int nodePointer = nativeFocusCandidatePointer(); 4790 // This needs to be called before setType, which may call 4791 // requestFormData, and it needs to have the correct nodePointer. 4792 mWebTextView.setNodePointer(nodePointer); 4793 mWebTextView.setType(nativeFocusCandidateType()); 4794 // Gravity needs to be set after setType 4795 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 4796 updateWebTextViewPadding(); 4797 if (null == text) { 4798 if (DebugFlags.WEB_VIEW) { 4799 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4800 } 4801 text = ""; 4802 } 4803 mWebTextView.setTextAndKeepSelection(text); 4804 InputMethodManager imm = InputMethodManager.peekInstance(); 4805 if (imm != null && imm.isActive(mWebTextView)) { 4806 imm.restartInput(mWebTextView); 4807 } 4808 if (isFocused()) { 4809 mWebTextView.requestFocus(); 4810 } 4811 } 4812 4813 /** 4814 * Update the padding of mWebTextView based on the native textfield/textarea 4815 */ 4816 void updateWebTextViewPadding() { 4817 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4818 if (paddingRect != null) { 4819 // Use contentToViewDimension since these are the dimensions of 4820 // the padding. 4821 mWebTextView.setPadding( 4822 contentToViewDimension(paddingRect.left), 4823 contentToViewDimension(paddingRect.top), 4824 contentToViewDimension(paddingRect.right), 4825 contentToViewDimension(paddingRect.bottom)); 4826 } 4827 } 4828 4829 /** 4830 * Tell webkit to put the cursor on screen. 4831 */ 4832 /* package */ void revealSelection() { 4833 if (mWebViewCore != null) { 4834 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4835 } 4836 } 4837 4838 /** 4839 * Called by WebTextView to find saved form data associated with the 4840 * textfield 4841 * @param name Name of the textfield. 4842 * @param nodePointer Pointer to the node of the textfield, so it can be 4843 * compared to the currently focused textfield when the data is 4844 * retrieved. 4845 * @param autoFillable true if WebKit has determined this field is part of 4846 * a form that can be auto filled. 4847 * @param autoComplete true if the attribute "autocomplete" is set to true 4848 * on the textfield. 4849 */ 4850 /* package */ void requestFormData(String name, int nodePointer, 4851 boolean autoFillable, boolean autoComplete) { 4852 if (mWebViewCore.getSettings().getSaveFormData()) { 4853 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4854 update.arg1 = nodePointer; 4855 RequestFormData updater = new RequestFormData(name, getUrl(), 4856 update, autoFillable, autoComplete); 4857 Thread t = new Thread(updater); 4858 t.start(); 4859 } 4860 } 4861 4862 /** 4863 * Pass a message to find out the <label> associated with the <input> 4864 * identified by nodePointer 4865 * @param framePointer Pointer to the frame containing the <input> node 4866 * @param nodePointer Pointer to the node for which a <label> is desired. 4867 */ 4868 /* package */ void requestLabel(int framePointer, int nodePointer) { 4869 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4870 nodePointer); 4871 } 4872 4873 /* 4874 * This class requests an Adapter for the WebTextView which shows past 4875 * entries stored in the database. It is a Runnable so that it can be done 4876 * in its own thread, without slowing down the UI. 4877 */ 4878 private class RequestFormData implements Runnable { 4879 private String mName; 4880 private String mUrl; 4881 private Message mUpdateMessage; 4882 private boolean mAutoFillable; 4883 private boolean mAutoComplete; 4884 private WebSettings mWebSettings; 4885 4886 public RequestFormData(String name, String url, Message msg, 4887 boolean autoFillable, boolean autoComplete) { 4888 mName = name; 4889 mUrl = WebTextView.urlForAutoCompleteData(url); 4890 mUpdateMessage = msg; 4891 mAutoFillable = autoFillable; 4892 mAutoComplete = autoComplete; 4893 mWebSettings = getSettings(); 4894 } 4895 4896 public void run() { 4897 ArrayList<String> pastEntries = new ArrayList<String>(); 4898 4899 if (mAutoFillable) { 4900 // Note that code inside the adapter click handler in WebTextView depends 4901 // on the AutoFill item being at the top of the drop down list. If you change 4902 // the order, make sure to do it there too! 4903 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 4904 pastEntries.add(getResources().getText( 4905 com.android.internal.R.string.autofill_this_form).toString() + 4906 " " + 4907 mAutoFillData.getPreviewString()); 4908 mWebTextView.setAutoFillProfileIsSet(true); 4909 } else { 4910 // There is no autofill profile set up yet, so add an option that 4911 // will invite the user to set their profile up. 4912 pastEntries.add(getResources().getText( 4913 com.android.internal.R.string.setup_autofill).toString()); 4914 mWebTextView.setAutoFillProfileIsSet(false); 4915 } 4916 } 4917 4918 if (mAutoComplete) { 4919 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4920 } 4921 4922 if (pastEntries.size() > 0) { 4923 AutoCompleteAdapter adapter = new 4924 AutoCompleteAdapter(mContext, pastEntries); 4925 mUpdateMessage.obj = adapter; 4926 mUpdateMessage.sendToTarget(); 4927 } 4928 } 4929 } 4930 4931 /** 4932 * Dump the display tree to "/sdcard/displayTree.txt" 4933 * 4934 * @hide debug only 4935 */ 4936 public void dumpDisplayTree() { 4937 nativeDumpDisplayTree(getUrl()); 4938 } 4939 4940 /** 4941 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4942 * "/sdcard/domTree.txt" 4943 * 4944 * @hide debug only 4945 */ 4946 public void dumpDomTree(boolean toFile) { 4947 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4948 } 4949 4950 /** 4951 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4952 * to "/sdcard/renderTree.txt" 4953 * 4954 * @hide debug only 4955 */ 4956 public void dumpRenderTree(boolean toFile) { 4957 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4958 } 4959 4960 /** 4961 * Called by DRT on UI thread, need to proxy to WebCore thread. 4962 * 4963 * @hide debug only 4964 */ 4965 public void useMockDeviceOrientation() { 4966 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4967 } 4968 4969 /** 4970 * Called by DRT on WebCore thread. 4971 * 4972 * @hide debug only 4973 */ 4974 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4975 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4976 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4977 canProvideGamma, gamma); 4978 } 4979 4980 /** 4981 * Dump the V8 counters to standard output. 4982 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4983 * true. Otherwise, this will do nothing. 4984 * 4985 * @hide debug only 4986 */ 4987 public void dumpV8Counters() { 4988 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4989 } 4990 4991 // This is used to determine long press with the center key. Does not 4992 // affect long press with the trackball/touch. 4993 private boolean mGotCenterDown = false; 4994 4995 @Override 4996 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4997 if (mBlockWebkitViewMessages) { 4998 return false; 4999 } 5000 // send complex characters to webkit for use by JS and plugins 5001 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5002 // pass the key to DOM 5003 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5004 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5005 // return true as DOM handles the key 5006 return true; 5007 } 5008 return false; 5009 } 5010 5011 private boolean isEnterActionKey(int keyCode) { 5012 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5013 || keyCode == KeyEvent.KEYCODE_ENTER 5014 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5015 } 5016 5017 @Override 5018 public boolean onKeyDown(int keyCode, KeyEvent event) { 5019 if (DebugFlags.WEB_VIEW) { 5020 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5021 + "keyCode=" + keyCode 5022 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5023 } 5024 if (mBlockWebkitViewMessages) { 5025 return false; 5026 } 5027 5028 // don't implement accelerator keys here; defer to host application 5029 if (event.isCtrlPressed()) { 5030 return false; 5031 } 5032 5033 if (mNativeClass == 0) { 5034 return false; 5035 } 5036 5037 // do this hack up front, so it always works, regardless of touch-mode 5038 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5039 mAutoRedraw = !mAutoRedraw; 5040 if (mAutoRedraw) { 5041 invalidate(); 5042 } 5043 return true; 5044 } 5045 5046 // Bubble up the key event if 5047 // 1. it is a system key; or 5048 // 2. the host application wants to handle it; 5049 if (event.isSystem() 5050 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5051 return false; 5052 } 5053 5054 // accessibility support 5055 if (accessibilityScriptInjected()) { 5056 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5057 // if an accessibility script is injected we delegate to it the key handling. 5058 // this script is a screen reader which is a fully fledged solution for blind 5059 // users to navigate in and interact with web pages. 5060 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5061 return true; 5062 } else { 5063 // Clean up if accessibility was disabled after loading the current URL. 5064 mAccessibilityScriptInjected = false; 5065 } 5066 } else if (mAccessibilityInjector != null) { 5067 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5068 if (mAccessibilityInjector.onKeyEvent(event)) { 5069 // if an accessibility injector is present (no JavaScript enabled or the site 5070 // opts out injecting our JavaScript screen reader) we let it decide whether 5071 // to act on and consume the event. 5072 return true; 5073 } 5074 } else { 5075 // Clean up if accessibility was disabled after loading the current URL. 5076 mAccessibilityInjector = null; 5077 } 5078 } 5079 5080 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5081 if (event.hasNoModifiers()) { 5082 pageUp(false); 5083 return true; 5084 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5085 pageUp(true); 5086 return true; 5087 } 5088 } 5089 5090 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5091 if (event.hasNoModifiers()) { 5092 pageDown(false); 5093 return true; 5094 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5095 pageDown(true); 5096 return true; 5097 } 5098 } 5099 5100 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5101 pageUp(true); 5102 return true; 5103 } 5104 5105 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5106 pageDown(true); 5107 return true; 5108 } 5109 5110 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5111 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5112 switchOutDrawHistory(); 5113 if (nativePageShouldHandleShiftAndArrows()) { 5114 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5115 return true; 5116 } 5117 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5118 switch (keyCode) { 5119 case KeyEvent.KEYCODE_DPAD_UP: 5120 pageUp(true); 5121 return true; 5122 case KeyEvent.KEYCODE_DPAD_DOWN: 5123 pageDown(true); 5124 return true; 5125 case KeyEvent.KEYCODE_DPAD_LEFT: 5126 nativeClearCursor(); // start next trackball movement from page edge 5127 return pinScrollTo(0, mScrollY, true, 0); 5128 case KeyEvent.KEYCODE_DPAD_RIGHT: 5129 nativeClearCursor(); // start next trackball movement from page edge 5130 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5131 } 5132 } 5133 if (mSelectingText) { 5134 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5135 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5136 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5137 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5138 int multiplier = event.getRepeatCount() + 1; 5139 moveSelection(xRate * multiplier, yRate * multiplier); 5140 return true; 5141 } 5142 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5143 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5144 return true; 5145 } 5146 // Bubble up the key event as WebView doesn't handle it 5147 return false; 5148 } 5149 5150 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5151 switchOutDrawHistory(); 5152 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5153 || nativeCursorWantsKeyEvents(); 5154 if (event.getRepeatCount() == 0) { 5155 if (mSelectingText) { 5156 return true; // discard press if copy in progress 5157 } 5158 mGotCenterDown = true; 5159 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5160 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5161 // Already checked mNativeClass, so we do not need to check it 5162 // again. 5163 recordButtons(null, hasFocus() && hasWindowFocus(), true, true); 5164 if (!wantsKeyEvents) return true; 5165 } 5166 // Bubble up the key event as WebView doesn't handle it 5167 if (!wantsKeyEvents) return false; 5168 } 5169 5170 if (getSettings().getNavDump()) { 5171 switch (keyCode) { 5172 case KeyEvent.KEYCODE_4: 5173 dumpDisplayTree(); 5174 break; 5175 case KeyEvent.KEYCODE_5: 5176 case KeyEvent.KEYCODE_6: 5177 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5178 break; 5179 case KeyEvent.KEYCODE_7: 5180 case KeyEvent.KEYCODE_8: 5181 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5182 break; 5183 case KeyEvent.KEYCODE_9: 5184 nativeInstrumentReport(); 5185 return true; 5186 } 5187 } 5188 5189 if (nativeCursorIsTextInput()) { 5190 // This message will put the node in focus, for the DOM's notion 5191 // of focus. 5192 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5193 nativeCursorNodePointer()); 5194 // This will bring up the WebTextView and put it in focus, for 5195 // our view system's notion of focus 5196 rebuildWebTextView(); 5197 // Now we need to pass the event to it 5198 if (inEditingMode()) { 5199 mWebTextView.setDefaultSelection(); 5200 return mWebTextView.dispatchKeyEvent(event); 5201 } 5202 } else if (nativeHasFocusNode()) { 5203 // In this case, the cursor is not on a text input, but the focus 5204 // might be. Check it, and if so, hand over to the WebTextView. 5205 rebuildWebTextView(); 5206 if (inEditingMode()) { 5207 mWebTextView.setDefaultSelection(); 5208 return mWebTextView.dispatchKeyEvent(event); 5209 } 5210 } 5211 5212 // TODO: should we pass all the keys to DOM or check the meta tag 5213 if (nativeCursorWantsKeyEvents() || true) { 5214 // pass the key to DOM 5215 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5216 // return true as DOM handles the key 5217 return true; 5218 } 5219 5220 // Bubble up the key event as WebView doesn't handle it 5221 return false; 5222 } 5223 5224 @Override 5225 public boolean onKeyUp(int keyCode, KeyEvent event) { 5226 if (DebugFlags.WEB_VIEW) { 5227 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5228 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5229 } 5230 if (mBlockWebkitViewMessages) { 5231 return false; 5232 } 5233 5234 if (mNativeClass == 0) { 5235 return false; 5236 } 5237 5238 // special CALL handling when cursor node's href is "tel:XXX" 5239 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5240 String text = nativeCursorText(); 5241 if (!nativeCursorIsTextInput() && text != null 5242 && text.startsWith(SCHEME_TEL)) { 5243 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5244 getContext().startActivity(intent); 5245 return true; 5246 } 5247 } 5248 5249 // Bubble up the key event if 5250 // 1. it is a system key; or 5251 // 2. the host application wants to handle it; 5252 if (event.isSystem() 5253 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5254 return false; 5255 } 5256 5257 // accessibility support 5258 if (accessibilityScriptInjected()) { 5259 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5260 // if an accessibility script is injected we delegate to it the key handling. 5261 // this script is a screen reader which is a fully fledged solution for blind 5262 // users to navigate in and interact with web pages. 5263 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5264 return true; 5265 } else { 5266 // Clean up if accessibility was disabled after loading the current URL. 5267 mAccessibilityScriptInjected = false; 5268 } 5269 } else if (mAccessibilityInjector != null) { 5270 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5271 if (mAccessibilityInjector.onKeyEvent(event)) { 5272 // if an accessibility injector is present (no JavaScript enabled or the site 5273 // opts out injecting our JavaScript screen reader) we let it decide whether to 5274 // act on and consume the event. 5275 return true; 5276 } 5277 } else { 5278 // Clean up if accessibility was disabled after loading the current URL. 5279 mAccessibilityInjector = null; 5280 } 5281 } 5282 5283 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5284 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5285 if (nativePageShouldHandleShiftAndArrows()) { 5286 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5287 return true; 5288 } 5289 // always handle the navigation keys in the UI thread 5290 // Bubble up the key event as WebView doesn't handle it 5291 return false; 5292 } 5293 5294 if (isEnterActionKey(keyCode)) { 5295 // remove the long press message first 5296 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5297 mGotCenterDown = false; 5298 5299 if (mSelectingText) { 5300 if (mExtendSelection) { 5301 copySelection(); 5302 selectionDone(); 5303 } else { 5304 mExtendSelection = true; 5305 nativeSetExtendSelection(); 5306 invalidate(); // draw the i-beam instead of the arrow 5307 } 5308 return true; // discard press if copy in progress 5309 } 5310 5311 // perform the single click 5312 Rect visibleRect = sendOurVisibleRect(); 5313 // Note that sendOurVisibleRect calls viewToContent, so the 5314 // coordinates should be in content coordinates. 5315 if (!nativeCursorIntersects(visibleRect)) { 5316 return false; 5317 } 5318 WebViewCore.CursorData data = cursorData(); 5319 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5320 playSoundEffect(SoundEffectConstants.CLICK); 5321 if (nativeCursorIsTextInput()) { 5322 rebuildWebTextView(); 5323 centerKeyPressOnTextField(); 5324 if (inEditingMode()) { 5325 mWebTextView.setDefaultSelection(); 5326 } 5327 return true; 5328 } 5329 clearTextEntry(); 5330 nativeShowCursorTimed(); 5331 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5332 return true; 5333 } 5334 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5335 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5336 nativeCursorNodePointer()); 5337 return true; 5338 } 5339 } 5340 5341 // TODO: should we pass all the keys to DOM or check the meta tag 5342 if (nativeCursorWantsKeyEvents() || true) { 5343 // pass the key to DOM 5344 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5345 // return true as DOM handles the key 5346 return true; 5347 } 5348 5349 // Bubble up the key event as WebView doesn't handle it 5350 return false; 5351 } 5352 5353 /* 5354 * Enter selecting text mode, and see if CAB should be shown. 5355 * Returns true if the WebView is now in 5356 * selecting text mode (including if it was already in that mode, and this 5357 * method did nothing). 5358 */ 5359 private boolean setUpSelect(boolean selectWord, int x, int y) { 5360 if (0 == mNativeClass) return false; // client isn't initialized 5361 if (inFullScreenMode()) return false; 5362 if (mSelectingText) return true; 5363 nativeResetSelection(); 5364 if (selectWord && !nativeWordSelection(x, y)) { 5365 selectionDone(); 5366 return false; 5367 } 5368 mSelectCallback = new SelectActionModeCallback(); 5369 mSelectCallback.setWebView(this); 5370 if (startActionMode(mSelectCallback) == null) { 5371 // There is no ActionMode, so do not allow the user to modify a 5372 // selection. 5373 selectionDone(); 5374 return false; 5375 } 5376 mExtendSelection = false; 5377 mSelectingText = mDrawSelectionPointer = true; 5378 // don't let the picture change during text selection 5379 WebViewCore.pauseUpdatePicture(mWebViewCore); 5380 if (nativeHasCursorNode()) { 5381 Rect rect = nativeCursorNodeBounds(); 5382 mSelectX = contentToViewX(rect.left); 5383 mSelectY = contentToViewY(rect.top); 5384 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5385 mSelectX = mScrollX + mLastTouchX; 5386 mSelectY = mScrollY + mLastTouchY; 5387 } else { 5388 mSelectX = mScrollX + getViewWidth() / 2; 5389 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5390 } 5391 nativeHideCursor(); 5392 mMinAutoScrollX = 0; 5393 mMaxAutoScrollX = getViewWidth(); 5394 mMinAutoScrollY = 0; 5395 mMaxAutoScrollY = getViewHeightWithTitle(); 5396 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 5397 viewToContentY(mSelectY), mScrollingLayerRect, 5398 mScrollingLayerBounds); 5399 if (mScrollingLayer != 0) { 5400 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5401 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5402 contentToViewX(mScrollingLayerBounds.left)); 5403 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5404 contentToViewX(mScrollingLayerBounds.right)); 5405 } 5406 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5407 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5408 contentToViewY(mScrollingLayerBounds.top)); 5409 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5410 contentToViewY(mScrollingLayerBounds.bottom)); 5411 } 5412 } 5413 mMinAutoScrollX += SELECT_SCROLL; 5414 mMaxAutoScrollX -= SELECT_SCROLL; 5415 mMinAutoScrollY += SELECT_SCROLL; 5416 mMaxAutoScrollY -= SELECT_SCROLL; 5417 return true; 5418 } 5419 5420 /** 5421 * Use this method to put the WebView into text selection mode. 5422 * Do not rely on this functionality; it will be deprecated in the future. 5423 * @deprecated This method is now obsolete. 5424 */ 5425 @Deprecated 5426 public void emulateShiftHeld() { 5427 checkThread(); 5428 setUpSelect(false, 0, 0); 5429 } 5430 5431 /** 5432 * Select all of the text in this WebView. 5433 * 5434 * @hide pending API council approval. 5435 */ 5436 public void selectAll() { 5437 if (0 == mNativeClass) return; // client isn't initialized 5438 if (inFullScreenMode()) return; 5439 if (!mSelectingText) { 5440 // retrieve a point somewhere within the text 5441 Point select = nativeSelectableText(); 5442 if (!selectText(select.x, select.y)) return; 5443 } 5444 nativeSelectAll(); 5445 mDrawSelectionPointer = false; 5446 mExtendSelection = true; 5447 invalidate(); 5448 } 5449 5450 /** 5451 * Called when the selection has been removed. 5452 */ 5453 void selectionDone() { 5454 if (mSelectingText) { 5455 mSelectingText = false; 5456 // finish is idempotent, so this is fine even if selectionDone was 5457 // called by mSelectCallback.onDestroyActionMode 5458 mSelectCallback.finish(); 5459 mSelectCallback = null; 5460 WebViewCore.resumePriority(); 5461 WebViewCore.resumeUpdatePicture(mWebViewCore); 5462 invalidate(); // redraw without selection 5463 mAutoScrollX = 0; 5464 mAutoScrollY = 0; 5465 mSentAutoScrollMessage = false; 5466 } 5467 } 5468 5469 /** 5470 * Copy the selection to the clipboard 5471 * 5472 * @hide pending API council approval. 5473 */ 5474 public boolean copySelection() { 5475 boolean copiedSomething = false; 5476 String selection = getSelection(); 5477 if (selection != null && selection != "") { 5478 if (DebugFlags.WEB_VIEW) { 5479 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5480 } 5481 Toast.makeText(mContext 5482 , com.android.internal.R.string.text_copied 5483 , Toast.LENGTH_SHORT).show(); 5484 copiedSomething = true; 5485 ClipboardManager cm = (ClipboardManager)getContext() 5486 .getSystemService(Context.CLIPBOARD_SERVICE); 5487 cm.setText(selection); 5488 } 5489 invalidate(); // remove selection region and pointer 5490 return copiedSomething; 5491 } 5492 5493 /** 5494 * @hide pending API Council approval. 5495 */ 5496 public SearchBox getSearchBox() { 5497 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5498 return null; 5499 } 5500 return mWebViewCore.getBrowserFrame().getSearchBox(); 5501 } 5502 5503 /** 5504 * Returns the currently highlighted text as a string. 5505 */ 5506 String getSelection() { 5507 if (mNativeClass == 0) return ""; 5508 return nativeGetSelection(); 5509 } 5510 5511 @Override 5512 protected void onAttachedToWindow() { 5513 super.onAttachedToWindow(); 5514 if (hasWindowFocus()) setActive(true); 5515 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5516 if (mGlobalLayoutListener == null) { 5517 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5518 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5519 } 5520 if (mScrollChangedListener == null) { 5521 mScrollChangedListener = new InnerScrollChangedListener(); 5522 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5523 } 5524 5525 addAccessibilityApisToJavaScript(); 5526 5527 mTouchEventQueue.reset(); 5528 } 5529 5530 @Override 5531 protected void onDetachedFromWindow() { 5532 clearHelpers(); 5533 mZoomManager.dismissZoomPicker(); 5534 if (hasWindowFocus()) setActive(false); 5535 5536 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5537 if (mGlobalLayoutListener != null) { 5538 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5539 mGlobalLayoutListener = null; 5540 } 5541 if (mScrollChangedListener != null) { 5542 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5543 mScrollChangedListener = null; 5544 } 5545 5546 removeAccessibilityApisFromJavaScript(); 5547 5548 super.onDetachedFromWindow(); 5549 } 5550 5551 @Override 5552 protected void onVisibilityChanged(View changedView, int visibility) { 5553 super.onVisibilityChanged(changedView, visibility); 5554 // The zoomManager may be null if the webview is created from XML that 5555 // specifies the view's visibility param as not visible (see http://b/2794841) 5556 if (visibility != View.VISIBLE && mZoomManager != null) { 5557 mZoomManager.dismissZoomPicker(); 5558 } 5559 } 5560 5561 /** 5562 * @deprecated WebView no longer needs to implement 5563 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5564 */ 5565 @Deprecated 5566 public void onChildViewAdded(View parent, View child) {} 5567 5568 /** 5569 * @deprecated WebView no longer needs to implement 5570 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5571 */ 5572 @Deprecated 5573 public void onChildViewRemoved(View p, View child) {} 5574 5575 /** 5576 * @deprecated WebView should not have implemented 5577 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5578 */ 5579 @Deprecated 5580 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5581 } 5582 5583 void setActive(boolean active) { 5584 if (active) { 5585 if (hasFocus()) { 5586 // If our window regained focus, and we have focus, then begin 5587 // drawing the cursor ring 5588 mDrawCursorRing = true; 5589 setFocusControllerActive(true); 5590 if (mNativeClass != 0) { 5591 recordButtons(null, true, false, true); 5592 } 5593 } else { 5594 if (!inEditingMode()) { 5595 // If our window gained focus, but we do not have it, do not 5596 // draw the cursor ring. 5597 mDrawCursorRing = false; 5598 setFocusControllerActive(false); 5599 } 5600 // We do not call recordButtons here because we assume 5601 // that when we lost focus, or window focus, it got called with 5602 // false for the first parameter 5603 } 5604 } else { 5605 if (!mZoomManager.isZoomPickerVisible()) { 5606 /* 5607 * The external zoom controls come in their own window, so our 5608 * window loses focus. Our policy is to not draw the cursor ring 5609 * if our window is not focused, but this is an exception since 5610 * the user can still navigate the web page with the zoom 5611 * controls showing. 5612 */ 5613 mDrawCursorRing = false; 5614 } 5615 mKeysPressed.clear(); 5616 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5617 mTouchMode = TOUCH_DONE_MODE; 5618 if (mNativeClass != 0) { 5619 recordButtons(null, false, false, true); 5620 } 5621 setFocusControllerActive(false); 5622 } 5623 invalidate(); 5624 } 5625 5626 // To avoid drawing the cursor ring, and remove the TextView when our window 5627 // loses focus. 5628 @Override 5629 public void onWindowFocusChanged(boolean hasWindowFocus) { 5630 setActive(hasWindowFocus); 5631 if (hasWindowFocus) { 5632 JWebCoreJavaBridge.setActiveWebView(this); 5633 if (mPictureUpdatePausedForFocusChange) { 5634 WebViewCore.resumeUpdatePicture(mWebViewCore); 5635 mPictureUpdatePausedForFocusChange = false; 5636 } 5637 } else { 5638 JWebCoreJavaBridge.removeActiveWebView(this); 5639 final WebSettings settings = getSettings(); 5640 if (settings != null && settings.enableSmoothTransition() && 5641 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5642 WebViewCore.pauseUpdatePicture(mWebViewCore); 5643 mPictureUpdatePausedForFocusChange = true; 5644 } 5645 } 5646 super.onWindowFocusChanged(hasWindowFocus); 5647 } 5648 5649 /* 5650 * Pass a message to WebCore Thread, telling the WebCore::Page's 5651 * FocusController to be "inactive" so that it will 5652 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5653 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5654 */ 5655 /* package */ void setFocusControllerActive(boolean active) { 5656 if (mWebViewCore == null) return; 5657 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5658 // Need to send this message after the document regains focus. 5659 if (active && mListBoxMessage != null) { 5660 mWebViewCore.sendMessage(mListBoxMessage); 5661 mListBoxMessage = null; 5662 } 5663 } 5664 5665 @Override 5666 protected void onFocusChanged(boolean focused, int direction, 5667 Rect previouslyFocusedRect) { 5668 if (DebugFlags.WEB_VIEW) { 5669 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5670 } 5671 if (focused) { 5672 // When we regain focus, if we have window focus, resume drawing 5673 // the cursor ring 5674 if (hasWindowFocus()) { 5675 mDrawCursorRing = true; 5676 if (mNativeClass != 0) { 5677 recordButtons(null, true, false, true); 5678 } 5679 setFocusControllerActive(true); 5680 //} else { 5681 // The WebView has gained focus while we do not have 5682 // windowfocus. When our window lost focus, we should have 5683 // called recordButtons(false...) 5684 } 5685 } else { 5686 // When we lost focus, unless focus went to the TextView (which is 5687 // true if we are in editing mode), stop drawing the cursor ring. 5688 if (!inEditingMode()) { 5689 mDrawCursorRing = false; 5690 if (mNativeClass != 0) { 5691 recordButtons(null, false, false, true); 5692 } 5693 setFocusControllerActive(false); 5694 } 5695 mKeysPressed.clear(); 5696 } 5697 5698 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5699 } 5700 5701 void setGLRectViewport() { 5702 // Use the getGlobalVisibleRect() to get the intersection among the parents 5703 // visible == false means we're clipped - send a null rect down to indicate that 5704 // we should not draw 5705 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5706 if (visible) { 5707 // Then need to invert the Y axis, just for GL 5708 View rootView = getRootView(); 5709 int rootViewHeight = rootView.getHeight(); 5710 mViewRectViewport.set(mGLRectViewport); 5711 int savedWebViewBottom = mGLRectViewport.bottom; 5712 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5713 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5714 mGLViewportEmpty = false; 5715 } else { 5716 mGLViewportEmpty = true; 5717 } 5718 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5719 mGLViewportEmpty ? null : mViewRectViewport); 5720 } 5721 5722 /** 5723 * @hide 5724 */ 5725 @Override 5726 protected boolean setFrame(int left, int top, int right, int bottom) { 5727 boolean changed = super.setFrame(left, top, right, bottom); 5728 if (!changed && mHeightCanMeasure) { 5729 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5730 // in WebViewCore after we get the first layout. We do call 5731 // requestLayout() when we get contentSizeChanged(). But the View 5732 // system won't call onSizeChanged if the dimension is not changed. 5733 // In this case, we need to call sendViewSizeZoom() explicitly to 5734 // notify the WebKit about the new dimensions. 5735 sendViewSizeZoom(false); 5736 } 5737 setGLRectViewport(); 5738 return changed; 5739 } 5740 5741 @Override 5742 protected void onSizeChanged(int w, int h, int ow, int oh) { 5743 super.onSizeChanged(w, h, ow, oh); 5744 5745 // adjust the max viewport width depending on the view dimensions. This 5746 // is to ensure the scaling is not going insane. So do not shrink it if 5747 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5748 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5749 if (newMaxViewportWidth > sMaxViewportWidth) { 5750 sMaxViewportWidth = newMaxViewportWidth; 5751 } 5752 5753 mZoomManager.onSizeChanged(w, h, ow, oh); 5754 5755 if (mLoadedPicture != null && mDelaySetPicture == null) { 5756 // Size changes normally result in a new picture 5757 // Re-set the loaded picture to simulate that 5758 // However, do not update the base layer as that hasn't changed 5759 setNewPicture(mLoadedPicture, false); 5760 } 5761 } 5762 5763 @Override 5764 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5765 super.onScrollChanged(l, t, oldl, oldt); 5766 if (!mInOverScrollMode) { 5767 sendOurVisibleRect(); 5768 // update WebKit if visible title bar height changed. The logic is same 5769 // as getVisibleTitleHeightImpl. 5770 int titleHeight = getTitleHeight(); 5771 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5772 sendViewSizeZoom(false); 5773 } 5774 } 5775 } 5776 5777 @Override 5778 public boolean dispatchKeyEvent(KeyEvent event) { 5779 switch (event.getAction()) { 5780 case KeyEvent.ACTION_DOWN: 5781 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5782 break; 5783 case KeyEvent.ACTION_MULTIPLE: 5784 // Always accept the action. 5785 break; 5786 case KeyEvent.ACTION_UP: 5787 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5788 if (location == -1) { 5789 // We did not receive the key down for this key, so do not 5790 // handle the key up. 5791 return false; 5792 } else { 5793 // We did receive the key down. Handle the key up, and 5794 // remove it from our pressed keys. 5795 mKeysPressed.remove(location); 5796 } 5797 break; 5798 default: 5799 // Accept the action. This should not happen, unless a new 5800 // action is added to KeyEvent. 5801 break; 5802 } 5803 if (inEditingMode() && mWebTextView.isFocused()) { 5804 // Ensure that the WebTextView gets the event, even if it does 5805 // not currently have a bounds. 5806 return mWebTextView.dispatchKeyEvent(event); 5807 } else { 5808 return super.dispatchKeyEvent(event); 5809 } 5810 } 5811 5812 /* 5813 * Here is the snap align logic: 5814 * 1. If it starts nearly horizontally or vertically, snap align; 5815 * 2. If there is a dramitic direction change, let it go; 5816 * 5817 * Adjustable parameters. Angle is the radians on a unit circle, limited 5818 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5819 */ 5820 private static final float HSLOPE_TO_START_SNAP = .25f; 5821 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5822 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5823 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5824 /* 5825 * These values are used to influence the average angle when entering 5826 * snap mode. If is is the first movement entering snap, we set the average 5827 * to the appropriate ideal. If the user is entering into snap after the 5828 * first movement, then we average the average angle with these values. 5829 */ 5830 private static final float ANGLE_VERT = 2f; 5831 private static final float ANGLE_HORIZ = 0f; 5832 /* 5833 * The modified moving average weight. 5834 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5835 */ 5836 private static final float MMA_WEIGHT_N = 5; 5837 5838 private boolean hitFocusedPlugin(int contentX, int contentY) { 5839 if (DebugFlags.WEB_VIEW) { 5840 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5841 Rect r = nativeFocusNodeBounds(); 5842 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5843 + ", " + r.right + ", " + r.bottom + ")"); 5844 } 5845 return nativeFocusIsPlugin() 5846 && nativeFocusNodeBounds().contains(contentX, contentY); 5847 } 5848 5849 private boolean shouldForwardTouchEvent() { 5850 if (mFullScreenHolder != null) return true; 5851 if (mBlockWebkitViewMessages) return false; 5852 return mForwardTouchEvents 5853 && !mSelectingText 5854 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5855 && mPreventDefault != PREVENT_DEFAULT_NO; 5856 } 5857 5858 private boolean inFullScreenMode() { 5859 return mFullScreenHolder != null; 5860 } 5861 5862 private void dismissFullScreenMode() { 5863 if (inFullScreenMode()) { 5864 mFullScreenHolder.hide(); 5865 mFullScreenHolder = null; 5866 } 5867 } 5868 5869 void onPinchToZoomAnimationStart() { 5870 // cancel the single touch handling 5871 cancelTouch(); 5872 onZoomAnimationStart(); 5873 } 5874 5875 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5876 onZoomAnimationEnd(); 5877 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5878 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5879 // as it may trigger the unwanted fling. 5880 mTouchMode = TOUCH_PINCH_DRAG; 5881 mConfirmMove = true; 5882 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5883 } 5884 5885 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5886 // layer is found. 5887 private void startScrollingLayer(float x, float y) { 5888 int contentX = viewToContentX((int) x + mScrollX); 5889 int contentY = viewToContentY((int) y + mScrollY); 5890 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5891 mScrollingLayerRect, mScrollingLayerBounds); 5892 if (mScrollingLayer != 0) { 5893 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5894 } 5895 } 5896 5897 // 1/(density * density) used to compute the distance between points. 5898 // Computed in init(). 5899 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5900 5901 // The distance between two points reported in onTouchEvent scaled by the 5902 // density of the screen. 5903 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5904 5905 @Override 5906 public boolean onHoverEvent(MotionEvent event) { 5907 if (mNativeClass == 0) { 5908 return false; 5909 } 5910 WebViewCore.CursorData data = cursorDataNoPosition(); 5911 data.mX = viewToContentX((int) event.getX() + mScrollX); 5912 data.mY = viewToContentY((int) event.getY() + mScrollY); 5913 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5914 return true; 5915 } 5916 5917 @Override 5918 public boolean onTouchEvent(MotionEvent ev) { 5919 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5920 return false; 5921 } 5922 5923 if (DebugFlags.WEB_VIEW) { 5924 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5925 + " mTouchMode=" + mTouchMode 5926 + " numPointers=" + ev.getPointerCount()); 5927 } 5928 5929 // If WebKit wasn't interested in this multitouch gesture, enqueue 5930 // the event for handling directly rather than making the round trip 5931 // to WebKit and back. 5932 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5933 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5934 } else { 5935 mTouchEventQueue.enqueueTouchEvent(ev); 5936 } 5937 5938 // Since all events are handled asynchronously, we always want the gesture stream. 5939 return true; 5940 } 5941 5942 private float calculateDragAngle(int dx, int dy) { 5943 dx = Math.abs(dx); 5944 dy = Math.abs(dy); 5945 return (float) Math.atan2(dy, dx); 5946 } 5947 5948 /* 5949 * Common code for single touch and multi-touch. 5950 * (x, y) denotes current focus point, which is the touch point for single touch 5951 * and the middle point for multi-touch. 5952 */ 5953 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5954 long eventTime = ev.getEventTime(); 5955 5956 // Due to the touch screen edge effect, a touch closer to the edge 5957 // always snapped to the edge. As getViewWidth() can be different from 5958 // getWidth() due to the scrollbar, adjusting the point to match 5959 // getViewWidth(). Same applied to the height. 5960 x = Math.min(x, getViewWidth() - 1); 5961 y = Math.min(y, getViewHeightWithTitle() - 1); 5962 5963 int deltaX = mLastTouchX - x; 5964 int deltaY = mLastTouchY - y; 5965 int contentX = viewToContentX(x + mScrollX); 5966 int contentY = viewToContentY(y + mScrollY); 5967 5968 switch (action) { 5969 case MotionEvent.ACTION_DOWN: { 5970 mPreventDefault = PREVENT_DEFAULT_NO; 5971 mConfirmMove = false; 5972 mInitialHitTestResult = null; 5973 if (!mScroller.isFinished()) { 5974 // stop the current scroll animation, but if this is 5975 // the start of a fling, allow it to add to the current 5976 // fling's velocity 5977 mScroller.abortAnimation(); 5978 mTouchMode = TOUCH_DRAG_START_MODE; 5979 mConfirmMove = true; 5980 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5981 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5982 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5983 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 5984 removeTouchHighlight(); 5985 } 5986 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5987 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5988 } else { 5989 // commit the short press action for the previous tap 5990 doShortPress(); 5991 mTouchMode = TOUCH_INIT_MODE; 5992 mDeferTouchProcess = !mBlockWebkitViewMessages 5993 && (!inFullScreenMode() && mForwardTouchEvents) 5994 ? hitFocusedPlugin(contentX, contentY) 5995 : false; 5996 } 5997 } else { // the normal case 5998 mTouchMode = TOUCH_INIT_MODE; 5999 mDeferTouchProcess = !mBlockWebkitViewMessages 6000 && (!inFullScreenMode() && mForwardTouchEvents) 6001 ? hitFocusedPlugin(contentX, contentY) 6002 : false; 6003 if (!mBlockWebkitViewMessages) { 6004 mWebViewCore.sendMessage( 6005 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6006 } 6007 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6008 TouchHighlightData data = new TouchHighlightData(); 6009 data.mX = contentX; 6010 data.mY = contentY; 6011 data.mNativeLayerRect = new Rect(); 6012 data.mNativeLayer = nativeScrollableLayer( 6013 contentX, contentY, data.mNativeLayerRect, null); 6014 data.mSlop = viewToContentDimension(mNavSlop); 6015 mTouchHighlightRegion.setEmpty(); 6016 if (!mBlockWebkitViewMessages) { 6017 mTouchHighlightRequested = System.currentTimeMillis(); 6018 mWebViewCore.sendMessageAtFrontOfQueue( 6019 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data); 6020 } 6021 if (DEBUG_TOUCH_HIGHLIGHT) { 6022 if (getSettings().getNavDump()) { 6023 mTouchHighlightX = (int) x + mScrollX; 6024 mTouchHighlightY = (int) y + mScrollY; 6025 mPrivateHandler.postDelayed(new Runnable() { 6026 public void run() { 6027 mTouchHighlightX = mTouchHighlightY = 0; 6028 invalidate(); 6029 } 6030 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6031 } 6032 } 6033 } 6034 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6035 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6036 (eventTime - mLastTouchUpTime), eventTime); 6037 } 6038 if (mSelectingText) { 6039 mDrawSelectionPointer = false; 6040 mSelectionStarted = nativeStartSelection(contentX, contentY); 6041 if (DebugFlags.WEB_VIEW) { 6042 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6043 } 6044 invalidate(); 6045 } 6046 } 6047 // Trigger the link 6048 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6049 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6050 mPrivateHandler.sendEmptyMessageDelayed( 6051 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6052 mPrivateHandler.sendEmptyMessageDelayed( 6053 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6054 if (inFullScreenMode() || mDeferTouchProcess) { 6055 mPreventDefault = PREVENT_DEFAULT_YES; 6056 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6057 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6058 } else { 6059 mPreventDefault = PREVENT_DEFAULT_NO; 6060 } 6061 // pass the touch events from UI thread to WebCore thread 6062 if (shouldForwardTouchEvent()) { 6063 TouchEventData ted = new TouchEventData(); 6064 ted.mAction = action; 6065 ted.mIds = new int[1]; 6066 ted.mIds[0] = ev.getPointerId(0); 6067 ted.mPoints = new Point[1]; 6068 ted.mPoints[0] = new Point(contentX, contentY); 6069 ted.mPointsInView = new Point[1]; 6070 ted.mPointsInView[0] = new Point(x, y); 6071 ted.mMetaState = ev.getMetaState(); 6072 ted.mReprocess = mDeferTouchProcess; 6073 ted.mNativeLayer = nativeScrollableLayer( 6074 contentX, contentY, ted.mNativeLayerRect, null); 6075 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6076 mTouchEventQueue.preQueueTouchEventData(ted); 6077 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6078 if (mDeferTouchProcess) { 6079 // still needs to set them for compute deltaX/Y 6080 mLastTouchX = x; 6081 mLastTouchY = y; 6082 break; 6083 } 6084 if (!inFullScreenMode()) { 6085 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6086 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6087 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6088 action, 0), TAP_TIMEOUT); 6089 } 6090 } 6091 } 6092 startTouch(x, y, eventTime); 6093 break; 6094 } 6095 case MotionEvent.ACTION_MOVE: { 6096 boolean firstMove = false; 6097 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6098 >= mTouchSlopSquare) { 6099 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6100 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6101 mConfirmMove = true; 6102 firstMove = true; 6103 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6104 mTouchMode = TOUCH_INIT_MODE; 6105 } 6106 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6107 removeTouchHighlight(); 6108 } 6109 } 6110 // pass the touch events from UI thread to WebCore thread 6111 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6112 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6113 TouchEventData ted = new TouchEventData(); 6114 ted.mAction = action; 6115 ted.mIds = new int[1]; 6116 ted.mIds[0] = ev.getPointerId(0); 6117 ted.mPoints = new Point[1]; 6118 ted.mPoints[0] = new Point(contentX, contentY); 6119 ted.mPointsInView = new Point[1]; 6120 ted.mPointsInView[0] = new Point(x, y); 6121 ted.mMetaState = ev.getMetaState(); 6122 ted.mReprocess = mDeferTouchProcess; 6123 ted.mNativeLayer = mScrollingLayer; 6124 ted.mNativeLayerRect.set(mScrollingLayerRect); 6125 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6126 mTouchEventQueue.preQueueTouchEventData(ted); 6127 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6128 mLastSentTouchTime = eventTime; 6129 if (mDeferTouchProcess) { 6130 break; 6131 } 6132 if (firstMove && !inFullScreenMode()) { 6133 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6134 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6135 action, 0), TAP_TIMEOUT); 6136 } 6137 } 6138 if (mTouchMode == TOUCH_DONE_MODE 6139 || mPreventDefault == PREVENT_DEFAULT_YES) { 6140 // no dragging during scroll zoom animation, or when prevent 6141 // default is yes 6142 break; 6143 } 6144 if (mVelocityTracker == null) { 6145 Log.e(LOGTAG, "Got null mVelocityTracker when " 6146 + "mPreventDefault = " + mPreventDefault 6147 + " mDeferTouchProcess = " + mDeferTouchProcess 6148 + " mTouchMode = " + mTouchMode); 6149 } else { 6150 mVelocityTracker.addMovement(ev); 6151 } 6152 if (mSelectingText && mSelectionStarted) { 6153 if (DebugFlags.WEB_VIEW) { 6154 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6155 } 6156 ViewParent parent = getParent(); 6157 if (parent != null) { 6158 parent.requestDisallowInterceptTouchEvent(true); 6159 } 6160 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6161 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6162 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6163 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6164 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6165 && !mSentAutoScrollMessage) { 6166 mSentAutoScrollMessage = true; 6167 mPrivateHandler.sendEmptyMessageDelayed( 6168 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6169 } 6170 if (deltaX != 0 || deltaY != 0) { 6171 nativeExtendSelection(contentX, contentY); 6172 invalidate(); 6173 } 6174 break; 6175 } 6176 6177 if (mTouchMode != TOUCH_DRAG_MODE && 6178 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6179 6180 if (!mConfirmMove) { 6181 break; 6182 } 6183 6184 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6185 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6186 // track mLastTouchTime as we may need to do fling at 6187 // ACTION_UP 6188 mLastTouchTime = eventTime; 6189 break; 6190 } 6191 6192 // Only lock dragging to one axis if we don't have a scale in progress. 6193 // Scaling implies free-roaming movement. Note this is only ever a question 6194 // if mZoomManager.supportsPanDuringZoom() is true. 6195 final ScaleGestureDetector detector = 6196 mZoomManager.getMultiTouchGestureDetector(); 6197 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6198 if (detector == null || !detector.isInProgress()) { 6199 // if it starts nearly horizontal or vertical, enforce it 6200 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6201 mSnapScrollMode = SNAP_X; 6202 mSnapPositive = deltaX > 0; 6203 mAverageAngle = ANGLE_HORIZ; 6204 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6205 mSnapScrollMode = SNAP_Y; 6206 mSnapPositive = deltaY > 0; 6207 mAverageAngle = ANGLE_VERT; 6208 } 6209 } 6210 6211 mTouchMode = TOUCH_DRAG_MODE; 6212 mLastTouchX = x; 6213 mLastTouchY = y; 6214 deltaX = 0; 6215 deltaY = 0; 6216 6217 startScrollingLayer(x, y); 6218 startDrag(); 6219 } 6220 6221 // do pan 6222 boolean done = false; 6223 boolean keepScrollBarsVisible = false; 6224 if (deltaX == 0 && deltaY == 0) { 6225 keepScrollBarsVisible = done = true; 6226 } else { 6227 mAverageAngle += 6228 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6229 / MMA_WEIGHT_N; 6230 if (mSnapScrollMode != SNAP_NONE) { 6231 if (mSnapScrollMode == SNAP_Y) { 6232 // radical change means getting out of snap mode 6233 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6234 mSnapScrollMode = SNAP_NONE; 6235 } 6236 } 6237 if (mSnapScrollMode == SNAP_X) { 6238 // radical change means getting out of snap mode 6239 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6240 mSnapScrollMode = SNAP_NONE; 6241 } 6242 } 6243 } else { 6244 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6245 mSnapScrollMode = SNAP_X; 6246 mSnapPositive = deltaX > 0; 6247 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6248 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6249 mSnapScrollMode = SNAP_Y; 6250 mSnapPositive = deltaY > 0; 6251 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6252 } 6253 } 6254 if (mSnapScrollMode != SNAP_NONE) { 6255 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6256 deltaY = 0; 6257 } else { 6258 deltaX = 0; 6259 } 6260 } 6261 mLastTouchX = x; 6262 mLastTouchY = y; 6263 if ((deltaX | deltaY) != 0) { 6264 mHeldMotionless = MOTIONLESS_FALSE; 6265 } 6266 mLastTouchTime = eventTime; 6267 } 6268 6269 doDrag(deltaX, deltaY); 6270 6271 // Turn off scrollbars when dragging a layer. 6272 if (keepScrollBarsVisible && 6273 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6274 if (mHeldMotionless != MOTIONLESS_TRUE) { 6275 mHeldMotionless = MOTIONLESS_TRUE; 6276 invalidate(); 6277 } 6278 // keep the scrollbar on the screen even there is no scroll 6279 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6280 false); 6281 // return false to indicate that we can't pan out of the 6282 // view space 6283 return !done; 6284 } 6285 break; 6286 } 6287 case MotionEvent.ACTION_UP: { 6288 if (!isFocused()) requestFocus(); 6289 // pass the touch events from UI thread to WebCore thread 6290 if (shouldForwardTouchEvent()) { 6291 TouchEventData ted = new TouchEventData(); 6292 ted.mIds = new int[1]; 6293 ted.mIds[0] = ev.getPointerId(0); 6294 ted.mAction = action; 6295 ted.mPoints = new Point[1]; 6296 ted.mPoints[0] = new Point(contentX, contentY); 6297 ted.mPointsInView = new Point[1]; 6298 ted.mPointsInView[0] = new Point(x, y); 6299 ted.mMetaState = ev.getMetaState(); 6300 ted.mReprocess = mDeferTouchProcess; 6301 ted.mNativeLayer = mScrollingLayer; 6302 ted.mNativeLayerRect.set(mScrollingLayerRect); 6303 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6304 mTouchEventQueue.preQueueTouchEventData(ted); 6305 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6306 } 6307 mLastTouchUpTime = eventTime; 6308 if (mSentAutoScrollMessage) { 6309 mAutoScrollX = mAutoScrollY = 0; 6310 } 6311 switch (mTouchMode) { 6312 case TOUCH_DOUBLE_TAP_MODE: // double tap 6313 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6314 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6315 if (inFullScreenMode() || mDeferTouchProcess) { 6316 TouchEventData ted = new TouchEventData(); 6317 ted.mIds = new int[1]; 6318 ted.mIds[0] = ev.getPointerId(0); 6319 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6320 ted.mPoints = new Point[1]; 6321 ted.mPoints[0] = new Point(contentX, contentY); 6322 ted.mPointsInView = new Point[1]; 6323 ted.mPointsInView[0] = new Point(x, y); 6324 ted.mMetaState = ev.getMetaState(); 6325 ted.mReprocess = mDeferTouchProcess; 6326 ted.mNativeLayer = nativeScrollableLayer( 6327 contentX, contentY, 6328 ted.mNativeLayerRect, null); 6329 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6330 mTouchEventQueue.preQueueTouchEventData(ted); 6331 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6332 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6333 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6334 mTouchMode = TOUCH_DONE_MODE; 6335 } 6336 break; 6337 case TOUCH_INIT_MODE: // tap 6338 case TOUCH_SHORTPRESS_START_MODE: 6339 case TOUCH_SHORTPRESS_MODE: 6340 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6341 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6342 if (mConfirmMove) { 6343 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6344 " WebCore's response for touch down."); 6345 if (mPreventDefault != PREVENT_DEFAULT_YES 6346 && (computeMaxScrollX() > 0 6347 || computeMaxScrollY() > 0)) { 6348 // If the user has performed a very quick touch 6349 // sequence it is possible that we may get here 6350 // before WebCore has had a chance to process the events. 6351 // In this case, any call to preventDefault in the 6352 // JS touch handler will not have been executed yet. 6353 // Hence we will see both the UI (now) and WebCore 6354 // (when context switches) handling the event, 6355 // regardless of whether the web developer actually 6356 // doeses preventDefault in their touch handler. This 6357 // is the nature of our asynchronous touch model. 6358 6359 // we will not rewrite drag code here, but we 6360 // will try fling if it applies. 6361 WebViewCore.reducePriority(); 6362 // to get better performance, pause updating the 6363 // picture 6364 WebViewCore.pauseUpdatePicture(mWebViewCore); 6365 // fall through to TOUCH_DRAG_MODE 6366 } else { 6367 // WebKit may consume the touch event and modify 6368 // DOM. drawContentPicture() will be called with 6369 // animateSroll as true for better performance. 6370 // Force redraw in high-quality. 6371 invalidate(); 6372 break; 6373 } 6374 } else { 6375 if (mSelectingText) { 6376 // tapping on selection or controls does nothing 6377 if (!nativeHitSelection(contentX, contentY)) { 6378 selectionDone(); 6379 } 6380 break; 6381 } 6382 // only trigger double tap if the WebView is 6383 // scalable 6384 if (mTouchMode == TOUCH_INIT_MODE 6385 && (canZoomIn() || canZoomOut())) { 6386 mPrivateHandler.sendEmptyMessageDelayed( 6387 RELEASE_SINGLE_TAP, ViewConfiguration 6388 .getDoubleTapTimeout()); 6389 } else { 6390 doShortPress(); 6391 } 6392 break; 6393 } 6394 case TOUCH_DRAG_MODE: 6395 case TOUCH_DRAG_LAYER_MODE: 6396 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6397 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6398 // if the user waits a while w/o moving before the 6399 // up, we don't want to do a fling 6400 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6401 if (mVelocityTracker == null) { 6402 Log.e(LOGTAG, "Got null mVelocityTracker when " 6403 + "mPreventDefault = " 6404 + mPreventDefault 6405 + " mDeferTouchProcess = " 6406 + mDeferTouchProcess); 6407 } else { 6408 mVelocityTracker.addMovement(ev); 6409 } 6410 // set to MOTIONLESS_IGNORE so that it won't keep 6411 // removing and sending message in 6412 // drawCoreAndCursorRing() 6413 mHeldMotionless = MOTIONLESS_IGNORE; 6414 doFling(); 6415 break; 6416 } else { 6417 if (mScroller.springBack(mScrollX, mScrollY, 0, 6418 computeMaxScrollX(), 0, 6419 computeMaxScrollY())) { 6420 invalidate(); 6421 } 6422 } 6423 // redraw in high-quality, as we're done dragging 6424 mHeldMotionless = MOTIONLESS_TRUE; 6425 invalidate(); 6426 // fall through 6427 case TOUCH_DRAG_START_MODE: 6428 // TOUCH_DRAG_START_MODE should not happen for the real 6429 // device as we almost certain will get a MOVE. But this 6430 // is possible on emulator. 6431 mLastVelocity = 0; 6432 WebViewCore.resumePriority(); 6433 if (!mSelectingText) { 6434 WebViewCore.resumeUpdatePicture(mWebViewCore); 6435 } 6436 break; 6437 } 6438 stopTouch(); 6439 break; 6440 } 6441 case MotionEvent.ACTION_CANCEL: { 6442 if (mTouchMode == TOUCH_DRAG_MODE) { 6443 mScroller.springBack(mScrollX, mScrollY, 0, 6444 computeMaxScrollX(), 0, computeMaxScrollY()); 6445 invalidate(); 6446 } 6447 cancelWebCoreTouchEvent(contentX, contentY, false); 6448 cancelTouch(); 6449 break; 6450 } 6451 } 6452 return true; 6453 } 6454 6455 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6456 TouchEventData ted = new TouchEventData(); 6457 ted.mAction = ev.getActionMasked(); 6458 final int count = ev.getPointerCount(); 6459 ted.mIds = new int[count]; 6460 ted.mPoints = new Point[count]; 6461 ted.mPointsInView = new Point[count]; 6462 for (int c = 0; c < count; c++) { 6463 ted.mIds[c] = ev.getPointerId(c); 6464 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6465 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6466 ted.mPoints[c] = new Point(x, y); 6467 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6468 } 6469 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6470 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6471 ted.mActionIndex = ev.getActionIndex(); 6472 } 6473 ted.mMetaState = ev.getMetaState(); 6474 ted.mReprocess = true; 6475 ted.mMotionEvent = MotionEvent.obtain(ev); 6476 ted.mSequence = sequence; 6477 mTouchEventQueue.preQueueTouchEventData(ted); 6478 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6479 cancelLongPress(); 6480 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6481 } 6482 6483 void handleMultiTouchInWebView(MotionEvent ev) { 6484 if (DebugFlags.WEB_VIEW) { 6485 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6486 + " mTouchMode=" + mTouchMode 6487 + " numPointers=" + ev.getPointerCount() 6488 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6489 } 6490 6491 final ScaleGestureDetector detector = 6492 mZoomManager.getMultiTouchGestureDetector(); 6493 6494 // A few apps use WebView but don't instantiate gesture detector. 6495 // We don't need to support multi touch for them. 6496 if (detector == null) return; 6497 6498 float x = ev.getX(); 6499 float y = ev.getY(); 6500 6501 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6502 detector.onTouchEvent(ev); 6503 6504 if (detector.isInProgress()) { 6505 if (DebugFlags.WEB_VIEW) { 6506 Log.v(LOGTAG, "detector is in progress"); 6507 } 6508 mLastTouchTime = ev.getEventTime(); 6509 x = detector.getFocusX(); 6510 y = detector.getFocusY(); 6511 6512 cancelLongPress(); 6513 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6514 if (!mZoomManager.supportsPanDuringZoom()) { 6515 return; 6516 } 6517 mTouchMode = TOUCH_DRAG_MODE; 6518 if (mVelocityTracker == null) { 6519 mVelocityTracker = VelocityTracker.obtain(); 6520 } 6521 } 6522 } 6523 6524 int action = ev.getActionMasked(); 6525 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6526 cancelTouch(); 6527 action = MotionEvent.ACTION_DOWN; 6528 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6529 // set mLastTouchX/Y to the remaining points for multi-touch. 6530 mLastTouchX = Math.round(x); 6531 mLastTouchY = Math.round(y); 6532 } else if (action == MotionEvent.ACTION_MOVE) { 6533 // negative x or y indicate it is on the edge, skip it. 6534 if (x < 0 || y < 0) { 6535 return; 6536 } 6537 } 6538 6539 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6540 } 6541 6542 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6543 if (shouldForwardTouchEvent()) { 6544 if (removeEvents) { 6545 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6546 } 6547 TouchEventData ted = new TouchEventData(); 6548 ted.mIds = new int[1]; 6549 ted.mIds[0] = 0; 6550 ted.mPoints = new Point[1]; 6551 ted.mPoints[0] = new Point(x, y); 6552 ted.mPointsInView = new Point[1]; 6553 int viewX = contentToViewX(x) - mScrollX; 6554 int viewY = contentToViewY(y) - mScrollY; 6555 ted.mPointsInView[0] = new Point(viewX, viewY); 6556 ted.mAction = MotionEvent.ACTION_CANCEL; 6557 ted.mNativeLayer = nativeScrollableLayer( 6558 x, y, ted.mNativeLayerRect, null); 6559 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6560 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6561 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6562 6563 if (removeEvents) { 6564 // Mark this after sending the message above; we should 6565 // be willing to ignore the cancel event that we just sent. 6566 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6567 } 6568 } 6569 } 6570 6571 private void startTouch(float x, float y, long eventTime) { 6572 // Remember where the motion event started 6573 mStartTouchX = mLastTouchX = Math.round(x); 6574 mStartTouchY = mLastTouchY = Math.round(y); 6575 mLastTouchTime = eventTime; 6576 mVelocityTracker = VelocityTracker.obtain(); 6577 mSnapScrollMode = SNAP_NONE; 6578 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6579 ViewConfiguration.getTapTimeout()); 6580 } 6581 6582 private void startDrag() { 6583 WebViewCore.reducePriority(); 6584 // to get better performance, pause updating the picture 6585 WebViewCore.pauseUpdatePicture(mWebViewCore); 6586 nativeSetIsScrolling(true); 6587 6588 if (!mDragFromTextInput) { 6589 nativeHideCursor(); 6590 } 6591 6592 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6593 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6594 mZoomManager.invokeZoomPicker(); 6595 } 6596 } 6597 6598 private void doDrag(int deltaX, int deltaY) { 6599 if ((deltaX | deltaY) != 0) { 6600 int oldX = mScrollX; 6601 int oldY = mScrollY; 6602 int rangeX = computeMaxScrollX(); 6603 int rangeY = computeMaxScrollY(); 6604 int overscrollDistance = mOverscrollDistance; 6605 6606 // Check for the original scrolling layer in case we change 6607 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6608 // reached the edge of a layer but mScrollingLayer will be non-zero 6609 // if we initiated the drag on a layer. 6610 if (mScrollingLayer != 0) { 6611 final int contentX = viewToContentDimension(deltaX); 6612 final int contentY = viewToContentDimension(deltaY); 6613 6614 // Check the scrolling bounds to see if we will actually do any 6615 // scrolling. The rectangle is in document coordinates. 6616 final int maxX = mScrollingLayerRect.right; 6617 final int maxY = mScrollingLayerRect.bottom; 6618 final int resultX = Math.max(0, 6619 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6620 final int resultY = Math.max(0, 6621 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6622 6623 if (resultX != mScrollingLayerRect.left || 6624 resultY != mScrollingLayerRect.top) { 6625 // In case we switched to dragging the page. 6626 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6627 deltaX = contentX; 6628 deltaY = contentY; 6629 oldX = mScrollingLayerRect.left; 6630 oldY = mScrollingLayerRect.top; 6631 rangeX = maxX; 6632 rangeY = maxY; 6633 } else { 6634 // Scroll the main page if we are not going to scroll the 6635 // layer. This does not reset mScrollingLayer in case the 6636 // user changes directions and the layer can scroll the 6637 // other way. 6638 mTouchMode = TOUCH_DRAG_MODE; 6639 } 6640 } 6641 6642 if (mOverScrollGlow != null) { 6643 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6644 } 6645 6646 overScrollBy(deltaX, deltaY, oldX, oldY, 6647 rangeX, rangeY, 6648 mOverscrollDistance, mOverscrollDistance, true); 6649 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6650 invalidate(); 6651 } 6652 } 6653 mZoomManager.keepZoomPickerVisible(); 6654 } 6655 6656 private void stopTouch() { 6657 if (mScroller.isFinished() && !mSelectingText 6658 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6659 WebViewCore.resumePriority(); 6660 WebViewCore.resumeUpdatePicture(mWebViewCore); 6661 nativeSetIsScrolling(false); 6662 } 6663 6664 // we also use mVelocityTracker == null to tell us that we are 6665 // not "moving around", so we can take the slower/prettier 6666 // mode in the drawing code 6667 if (mVelocityTracker != null) { 6668 mVelocityTracker.recycle(); 6669 mVelocityTracker = null; 6670 } 6671 6672 // Release any pulled glows 6673 if (mOverScrollGlow != null) { 6674 mOverScrollGlow.releaseAll(); 6675 } 6676 } 6677 6678 private void cancelTouch() { 6679 // we also use mVelocityTracker == null to tell us that we are 6680 // not "moving around", so we can take the slower/prettier 6681 // mode in the drawing code 6682 if (mVelocityTracker != null) { 6683 mVelocityTracker.recycle(); 6684 mVelocityTracker = null; 6685 } 6686 6687 if ((mTouchMode == TOUCH_DRAG_MODE 6688 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6689 WebViewCore.resumePriority(); 6690 WebViewCore.resumeUpdatePicture(mWebViewCore); 6691 nativeSetIsScrolling(false); 6692 } 6693 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6694 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6695 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6696 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6697 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6698 removeTouchHighlight(); 6699 } 6700 mHeldMotionless = MOTIONLESS_TRUE; 6701 mTouchMode = TOUCH_DONE_MODE; 6702 nativeHideCursor(); 6703 } 6704 6705 @Override 6706 public boolean onGenericMotionEvent(MotionEvent event) { 6707 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6708 switch (event.getAction()) { 6709 case MotionEvent.ACTION_SCROLL: { 6710 final float vscroll; 6711 final float hscroll; 6712 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6713 vscroll = 0; 6714 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6715 } else { 6716 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6717 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6718 } 6719 if (hscroll != 0 || vscroll != 0) { 6720 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6721 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6722 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6723 return true; 6724 } 6725 } 6726 } 6727 } 6728 } 6729 return super.onGenericMotionEvent(event); 6730 } 6731 6732 private long mTrackballFirstTime = 0; 6733 private long mTrackballLastTime = 0; 6734 private float mTrackballRemainsX = 0.0f; 6735 private float mTrackballRemainsY = 0.0f; 6736 private int mTrackballXMove = 0; 6737 private int mTrackballYMove = 0; 6738 private boolean mSelectingText = false; 6739 private boolean mSelectionStarted = false; 6740 private boolean mExtendSelection = false; 6741 private boolean mDrawSelectionPointer = false; 6742 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6743 private static final int TRACKBALL_TIMEOUT = 200; 6744 private static final int TRACKBALL_WAIT = 100; 6745 private static final int TRACKBALL_SCALE = 400; 6746 private static final int TRACKBALL_SCROLL_COUNT = 5; 6747 private static final int TRACKBALL_MOVE_COUNT = 10; 6748 private static final int TRACKBALL_MULTIPLIER = 3; 6749 private static final int SELECT_CURSOR_OFFSET = 16; 6750 private static final int SELECT_SCROLL = 5; 6751 private int mSelectX = 0; 6752 private int mSelectY = 0; 6753 private boolean mFocusSizeChanged = false; 6754 private boolean mTrackballDown = false; 6755 private long mTrackballUpTime = 0; 6756 private long mLastCursorTime = 0; 6757 private Rect mLastCursorBounds; 6758 6759 // Set by default; BrowserActivity clears to interpret trackball data 6760 // directly for movement. Currently, the framework only passes 6761 // arrow key events, not trackball events, from one child to the next 6762 private boolean mMapTrackballToArrowKeys = true; 6763 6764 private DrawData mDelaySetPicture; 6765 private DrawData mLoadedPicture; 6766 6767 public void setMapTrackballToArrowKeys(boolean setMap) { 6768 checkThread(); 6769 mMapTrackballToArrowKeys = setMap; 6770 } 6771 6772 void resetTrackballTime() { 6773 mTrackballLastTime = 0; 6774 } 6775 6776 @Override 6777 public boolean onTrackballEvent(MotionEvent ev) { 6778 long time = ev.getEventTime(); 6779 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6780 if (ev.getY() > 0) pageDown(true); 6781 if (ev.getY() < 0) pageUp(true); 6782 return true; 6783 } 6784 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6785 if (mSelectingText) { 6786 return true; // discard press if copy in progress 6787 } 6788 mTrackballDown = true; 6789 if (mNativeClass == 0) { 6790 return false; 6791 } 6792 recordButtons(null, hasFocus() && hasWindowFocus(), true, true); 6793 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6794 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6795 nativeSelectBestAt(mLastCursorBounds); 6796 } 6797 if (DebugFlags.WEB_VIEW) { 6798 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6799 + " time=" + time 6800 + " mLastCursorTime=" + mLastCursorTime); 6801 } 6802 if (isInTouchMode()) requestFocusFromTouch(); 6803 return false; // let common code in onKeyDown at it 6804 } 6805 if (ev.getAction() == MotionEvent.ACTION_UP) { 6806 // LONG_PRESS_CENTER is set in common onKeyDown 6807 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6808 mTrackballDown = false; 6809 mTrackballUpTime = time; 6810 if (mSelectingText) { 6811 if (mExtendSelection) { 6812 copySelection(); 6813 selectionDone(); 6814 } else { 6815 mExtendSelection = true; 6816 nativeSetExtendSelection(); 6817 invalidate(); // draw the i-beam instead of the arrow 6818 } 6819 return true; // discard press if copy in progress 6820 } 6821 if (DebugFlags.WEB_VIEW) { 6822 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6823 + " time=" + time 6824 ); 6825 } 6826 return false; // let common code in onKeyUp at it 6827 } 6828 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6829 AccessibilityManager.getInstance(mContext).isEnabled()) { 6830 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6831 return false; 6832 } 6833 if (mTrackballDown) { 6834 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6835 return true; // discard move if trackball is down 6836 } 6837 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6838 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6839 return true; 6840 } 6841 // TODO: alternatively we can do panning as touch does 6842 switchOutDrawHistory(); 6843 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6844 if (DebugFlags.WEB_VIEW) { 6845 Log.v(LOGTAG, "onTrackballEvent time=" 6846 + time + " last=" + mTrackballLastTime); 6847 } 6848 mTrackballFirstTime = time; 6849 mTrackballXMove = mTrackballYMove = 0; 6850 } 6851 mTrackballLastTime = time; 6852 if (DebugFlags.WEB_VIEW) { 6853 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6854 } 6855 mTrackballRemainsX += ev.getX(); 6856 mTrackballRemainsY += ev.getY(); 6857 doTrackball(time, ev.getMetaState()); 6858 return true; 6859 } 6860 6861 void moveSelection(float xRate, float yRate) { 6862 if (mNativeClass == 0) 6863 return; 6864 int width = getViewWidth(); 6865 int height = getViewHeight(); 6866 mSelectX += xRate; 6867 mSelectY += yRate; 6868 int maxX = width + mScrollX; 6869 int maxY = height + mScrollY; 6870 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6871 , mSelectX)); 6872 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6873 , mSelectY)); 6874 if (DebugFlags.WEB_VIEW) { 6875 Log.v(LOGTAG, "moveSelection" 6876 + " mSelectX=" + mSelectX 6877 + " mSelectY=" + mSelectY 6878 + " mScrollX=" + mScrollX 6879 + " mScrollY=" + mScrollY 6880 + " xRate=" + xRate 6881 + " yRate=" + yRate 6882 ); 6883 } 6884 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6885 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6886 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6887 : 0; 6888 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6889 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6890 : 0; 6891 pinScrollBy(scrollX, scrollY, true, 0); 6892 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6893 requestRectangleOnScreen(select); 6894 invalidate(); 6895 } 6896 6897 private int scaleTrackballX(float xRate, int width) { 6898 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6899 int nextXMove = xMove; 6900 if (xMove > 0) { 6901 if (xMove > mTrackballXMove) { 6902 xMove -= mTrackballXMove; 6903 } 6904 } else if (xMove < mTrackballXMove) { 6905 xMove -= mTrackballXMove; 6906 } 6907 mTrackballXMove = nextXMove; 6908 return xMove; 6909 } 6910 6911 private int scaleTrackballY(float yRate, int height) { 6912 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6913 int nextYMove = yMove; 6914 if (yMove > 0) { 6915 if (yMove > mTrackballYMove) { 6916 yMove -= mTrackballYMove; 6917 } 6918 } else if (yMove < mTrackballYMove) { 6919 yMove -= mTrackballYMove; 6920 } 6921 mTrackballYMove = nextYMove; 6922 return yMove; 6923 } 6924 6925 private int keyCodeToSoundsEffect(int keyCode) { 6926 switch(keyCode) { 6927 case KeyEvent.KEYCODE_DPAD_UP: 6928 return SoundEffectConstants.NAVIGATION_UP; 6929 case KeyEvent.KEYCODE_DPAD_RIGHT: 6930 return SoundEffectConstants.NAVIGATION_RIGHT; 6931 case KeyEvent.KEYCODE_DPAD_DOWN: 6932 return SoundEffectConstants.NAVIGATION_DOWN; 6933 case KeyEvent.KEYCODE_DPAD_LEFT: 6934 return SoundEffectConstants.NAVIGATION_LEFT; 6935 } 6936 throw new IllegalArgumentException("keyCode must be one of " + 6937 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6938 "KEYCODE_DPAD_LEFT}."); 6939 } 6940 6941 private void doTrackball(long time, int metaState) { 6942 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6943 if (elapsed == 0) { 6944 elapsed = TRACKBALL_TIMEOUT; 6945 } 6946 float xRate = mTrackballRemainsX * 1000 / elapsed; 6947 float yRate = mTrackballRemainsY * 1000 / elapsed; 6948 int viewWidth = getViewWidth(); 6949 int viewHeight = getViewHeight(); 6950 if (mSelectingText) { 6951 if (!mDrawSelectionPointer) { 6952 // The last selection was made by touch, disabling drawing the 6953 // selection pointer. Allow the trackball to adjust the 6954 // position of the touch control. 6955 mSelectX = contentToViewX(nativeSelectionX()); 6956 mSelectY = contentToViewY(nativeSelectionY()); 6957 mDrawSelectionPointer = mExtendSelection = true; 6958 nativeSetExtendSelection(); 6959 } 6960 moveSelection(scaleTrackballX(xRate, viewWidth), 6961 scaleTrackballY(yRate, viewHeight)); 6962 mTrackballRemainsX = mTrackballRemainsY = 0; 6963 return; 6964 } 6965 float ax = Math.abs(xRate); 6966 float ay = Math.abs(yRate); 6967 float maxA = Math.max(ax, ay); 6968 if (DebugFlags.WEB_VIEW) { 6969 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6970 + " xRate=" + xRate 6971 + " yRate=" + yRate 6972 + " mTrackballRemainsX=" + mTrackballRemainsX 6973 + " mTrackballRemainsY=" + mTrackballRemainsY); 6974 } 6975 int width = mContentWidth - viewWidth; 6976 int height = mContentHeight - viewHeight; 6977 if (width < 0) width = 0; 6978 if (height < 0) height = 0; 6979 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6980 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6981 maxA = Math.max(ax, ay); 6982 int count = Math.max(0, (int) maxA); 6983 int oldScrollX = mScrollX; 6984 int oldScrollY = mScrollY; 6985 if (count > 0) { 6986 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6987 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6988 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6989 KeyEvent.KEYCODE_DPAD_RIGHT; 6990 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6991 if (DebugFlags.WEB_VIEW) { 6992 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6993 + " count=" + count 6994 + " mTrackballRemainsX=" + mTrackballRemainsX 6995 + " mTrackballRemainsY=" + mTrackballRemainsY); 6996 } 6997 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6998 for (int i = 0; i < count; i++) { 6999 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7000 } 7001 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7002 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7003 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7004 } 7005 mTrackballRemainsX = mTrackballRemainsY = 0; 7006 } 7007 if (count >= TRACKBALL_SCROLL_COUNT) { 7008 int xMove = scaleTrackballX(xRate, width); 7009 int yMove = scaleTrackballY(yRate, height); 7010 if (DebugFlags.WEB_VIEW) { 7011 Log.v(LOGTAG, "doTrackball pinScrollBy" 7012 + " count=" + count 7013 + " xMove=" + xMove + " yMove=" + yMove 7014 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7015 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7016 ); 7017 } 7018 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7019 xMove = 0; 7020 } 7021 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7022 yMove = 0; 7023 } 7024 if (xMove != 0 || yMove != 0) { 7025 pinScrollBy(xMove, yMove, true, 0); 7026 } 7027 } 7028 } 7029 7030 /** 7031 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7032 * @return Maximum horizontal scroll position within real content 7033 */ 7034 int computeMaxScrollX() { 7035 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7036 } 7037 7038 /** 7039 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7040 * @return Maximum vertical scroll position within real content 7041 */ 7042 int computeMaxScrollY() { 7043 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7044 - getViewHeightWithTitle(), 0); 7045 } 7046 7047 boolean updateScrollCoordinates(int x, int y) { 7048 int oldX = mScrollX; 7049 int oldY = mScrollY; 7050 mScrollX = x; 7051 mScrollY = y; 7052 if (oldX != mScrollX || oldY != mScrollY) { 7053 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7054 return true; 7055 } else { 7056 return false; 7057 } 7058 } 7059 7060 public void flingScroll(int vx, int vy) { 7061 checkThread(); 7062 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7063 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7064 invalidate(); 7065 } 7066 7067 private void doFling() { 7068 if (mVelocityTracker == null) { 7069 return; 7070 } 7071 int maxX = computeMaxScrollX(); 7072 int maxY = computeMaxScrollY(); 7073 7074 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7075 int vx = (int) mVelocityTracker.getXVelocity(); 7076 int vy = (int) mVelocityTracker.getYVelocity(); 7077 7078 int scrollX = mScrollX; 7079 int scrollY = mScrollY; 7080 int overscrollDistance = mOverscrollDistance; 7081 int overflingDistance = mOverflingDistance; 7082 7083 // Use the layer's scroll data if applicable. 7084 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7085 scrollX = mScrollingLayerRect.left; 7086 scrollY = mScrollingLayerRect.top; 7087 maxX = mScrollingLayerRect.right; 7088 maxY = mScrollingLayerRect.bottom; 7089 // No overscrolling for layers. 7090 overscrollDistance = overflingDistance = 0; 7091 } 7092 7093 if (mSnapScrollMode != SNAP_NONE) { 7094 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7095 vy = 0; 7096 } else { 7097 vx = 0; 7098 } 7099 } 7100 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7101 WebViewCore.resumePriority(); 7102 if (!mSelectingText) { 7103 WebViewCore.resumeUpdatePicture(mWebViewCore); 7104 } 7105 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7106 invalidate(); 7107 } 7108 return; 7109 } 7110 float currentVelocity = mScroller.getCurrVelocity(); 7111 float velocity = (float) Math.hypot(vx, vy); 7112 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7113 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7114 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7115 - Math.atan2(vy, vx))); 7116 final float circle = (float) (Math.PI) * 2.0f; 7117 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7118 vx += currentVelocity * mLastVelX / mLastVelocity; 7119 vy += currentVelocity * mLastVelY / mLastVelocity; 7120 velocity = (float) Math.hypot(vx, vy); 7121 if (DebugFlags.WEB_VIEW) { 7122 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7123 } 7124 } else if (DebugFlags.WEB_VIEW) { 7125 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7126 } 7127 } else if (DebugFlags.WEB_VIEW) { 7128 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7129 + " current=" + currentVelocity 7130 + " vx=" + vx + " vy=" + vy 7131 + " maxX=" + maxX + " maxY=" + maxY 7132 + " scrollX=" + scrollX + " scrollY=" + scrollY 7133 + " layer=" + mScrollingLayer); 7134 } 7135 7136 // Allow sloppy flings without overscrolling at the edges. 7137 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7138 vx = 0; 7139 } 7140 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7141 vy = 0; 7142 } 7143 7144 if (overscrollDistance < overflingDistance) { 7145 if ((vx > 0 && scrollX == -overscrollDistance) || 7146 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7147 vx = 0; 7148 } 7149 if ((vy > 0 && scrollY == -overscrollDistance) || 7150 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7151 vy = 0; 7152 } 7153 } 7154 7155 mLastVelX = vx; 7156 mLastVelY = vy; 7157 mLastVelocity = velocity; 7158 7159 // no horizontal overscroll if the content just fits 7160 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7161 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7162 // Duration is calculated based on velocity. With range boundaries and overscroll 7163 // we may not know how long the final animation will take. (Hence the deprecation 7164 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7165 // resumes during this effect we will take a performance hit. See computeScroll; 7166 // we resume webcore there when the animation is finished. 7167 final int time = mScroller.getDuration(); 7168 7169 // Suppress scrollbars for layer scrolling. 7170 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7171 awakenScrollBars(time); 7172 } 7173 7174 invalidate(); 7175 } 7176 7177 /** 7178 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7179 * in charge of installing this view to the view hierarchy. This view will 7180 * become visible when the user starts scrolling via touch and fade away if 7181 * the user does not interact with it. 7182 * <p/> 7183 * API version 3 introduces a built-in zoom mechanism that is shown 7184 * automatically by the MapView. This is the preferred approach for 7185 * showing the zoom UI. 7186 * 7187 * @deprecated The built-in zoom mechanism is preferred, see 7188 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7189 */ 7190 @Deprecated 7191 public View getZoomControls() { 7192 checkThread(); 7193 if (!getSettings().supportZoom()) { 7194 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7195 return null; 7196 } 7197 return mZoomManager.getExternalZoomPicker(); 7198 } 7199 7200 void dismissZoomControl() { 7201 mZoomManager.dismissZoomPicker(); 7202 } 7203 7204 float getDefaultZoomScale() { 7205 return mZoomManager.getDefaultScale(); 7206 } 7207 7208 /** 7209 * Return the overview scale of the WebView 7210 * @return The overview scale. 7211 */ 7212 float getZoomOverviewScale() { 7213 return mZoomManager.getZoomOverviewScale(); 7214 } 7215 7216 /** 7217 * @return TRUE if the WebView can be zoomed in. 7218 */ 7219 public boolean canZoomIn() { 7220 checkThread(); 7221 return mZoomManager.canZoomIn(); 7222 } 7223 7224 /** 7225 * @return TRUE if the WebView can be zoomed out. 7226 */ 7227 public boolean canZoomOut() { 7228 checkThread(); 7229 return mZoomManager.canZoomOut(); 7230 } 7231 7232 /** 7233 * Perform zoom in in the webview 7234 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7235 */ 7236 public boolean zoomIn() { 7237 checkThread(); 7238 return mZoomManager.zoomIn(); 7239 } 7240 7241 /** 7242 * Perform zoom out in the webview 7243 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7244 */ 7245 public boolean zoomOut() { 7246 checkThread(); 7247 return mZoomManager.zoomOut(); 7248 } 7249 7250 /** 7251 * This selects the best clickable target at mLastTouchX and mLastTouchY 7252 * and calls showCursorTimed on the native side 7253 */ 7254 private void updateSelection() { 7255 if (mNativeClass == 0) { 7256 return; 7257 } 7258 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7259 // mLastTouchX and mLastTouchY are the point in the current viewport 7260 int contentX = viewToContentX(mLastTouchX + mScrollX); 7261 int contentY = viewToContentY(mLastTouchY + mScrollY); 7262 int slop = viewToContentDimension(mNavSlop); 7263 Rect rect = new Rect(contentX - slop, contentY - slop, 7264 contentX + slop, contentY + slop); 7265 nativeSelectBestAt(rect); 7266 mInitialHitTestResult = hitTestResult(null); 7267 } 7268 7269 /** 7270 * Scroll the focused text field to match the WebTextView 7271 * @param xPercent New x position of the WebTextView from 0 to 1. 7272 */ 7273 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7274 if (!inEditingMode() || mWebViewCore == null) { 7275 return; 7276 } 7277 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7278 new Float(xPercent)); 7279 } 7280 7281 /** 7282 * Scroll the focused textarea vertically to match the WebTextView 7283 * @param y New y position of the WebTextView in view coordinates 7284 */ 7285 /* package */ void scrollFocusedTextInputY(int y) { 7286 if (!inEditingMode() || mWebViewCore == null) { 7287 return; 7288 } 7289 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7290 } 7291 7292 /** 7293 * Set our starting point and time for a drag from the WebTextView. 7294 */ 7295 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7296 if (!inEditingMode()) { 7297 return; 7298 } 7299 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7300 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7301 mLastTouchTime = eventTime; 7302 if (!mScroller.isFinished()) { 7303 abortAnimation(); 7304 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 7305 } 7306 mSnapScrollMode = SNAP_NONE; 7307 mVelocityTracker = VelocityTracker.obtain(); 7308 mTouchMode = TOUCH_DRAG_START_MODE; 7309 } 7310 7311 /** 7312 * Given a motion event from the WebTextView, set its location to our 7313 * coordinates, and handle the event. 7314 */ 7315 /*package*/ boolean textFieldDrag(MotionEvent event) { 7316 if (!inEditingMode()) { 7317 return false; 7318 } 7319 mDragFromTextInput = true; 7320 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7321 (float) (mWebTextView.getTop() - mScrollY)); 7322 boolean result = onTouchEvent(event); 7323 mDragFromTextInput = false; 7324 return result; 7325 } 7326 7327 /** 7328 * Due a touch up from a WebTextView. This will be handled by webkit to 7329 * change the selection. 7330 * @param event MotionEvent in the WebTextView's coordinates. 7331 */ 7332 /*package*/ void touchUpOnTextField(MotionEvent event) { 7333 if (!inEditingMode()) { 7334 return; 7335 } 7336 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7337 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7338 int slop = viewToContentDimension(mNavSlop); 7339 nativeMotionUp(x, y, slop); 7340 } 7341 7342 /** 7343 * Called when pressing the center key or trackball on a textfield. 7344 */ 7345 /*package*/ void centerKeyPressOnTextField() { 7346 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7347 nativeCursorNodePointer()); 7348 } 7349 7350 private void doShortPress() { 7351 if (mNativeClass == 0) { 7352 return; 7353 } 7354 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7355 return; 7356 } 7357 mTouchMode = TOUCH_DONE_MODE; 7358 updateSelection(); 7359 switchOutDrawHistory(); 7360 // mLastTouchX and mLastTouchY are the point in the current viewport 7361 int contentX = viewToContentX(mLastTouchX + mScrollX); 7362 int contentY = viewToContentY(mLastTouchY + mScrollY); 7363 int slop = viewToContentDimension(mNavSlop); 7364 if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) { 7365 // set mTouchHighlightRequested to 0 to cause an immediate 7366 // drawing of the touch rings 7367 mTouchHighlightRequested = 0; 7368 invalidate(mTouchHighlightRegion.getBounds()); 7369 mPrivateHandler.postDelayed(new Runnable() { 7370 @Override 7371 public void run() { 7372 removeTouchHighlight(); 7373 } 7374 }, ViewConfiguration.getPressedStateDuration()); 7375 } 7376 if (getSettings().supportTouchOnly()) { 7377 removeTouchHighlight(); 7378 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7379 // use "0" as generation id to inform WebKit to use the same x/y as 7380 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7381 touchUpData.mMoveGeneration = 0; 7382 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7383 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7384 WebViewCore.MotionUpData motionUpData = new WebViewCore 7385 .MotionUpData(); 7386 motionUpData.mFrame = nativeCacheHitFramePointer(); 7387 motionUpData.mNode = nativeCacheHitNodePointer(); 7388 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7389 motionUpData.mX = contentX; 7390 motionUpData.mY = contentY; 7391 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7392 motionUpData); 7393 } else { 7394 doMotionUp(contentX, contentY); 7395 } 7396 } 7397 7398 private void doMotionUp(int contentX, int contentY) { 7399 int slop = viewToContentDimension(mNavSlop); 7400 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7401 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7402 } 7403 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7404 playSoundEffect(SoundEffectConstants.CLICK); 7405 } 7406 } 7407 7408 /** 7409 * Returns plugin bounds if x/y in content coordinates corresponds to a 7410 * plugin. Otherwise a NULL rectangle is returned. 7411 */ 7412 Rect getPluginBounds(int x, int y) { 7413 int slop = viewToContentDimension(mNavSlop); 7414 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7415 return nativeCacheHitNodeBounds(); 7416 } else { 7417 return null; 7418 } 7419 } 7420 7421 /* 7422 * Return true if the rect (e.g. plugin) is fully visible and maximized 7423 * inside the WebView. 7424 */ 7425 boolean isRectFitOnScreen(Rect rect) { 7426 final int rectWidth = rect.width(); 7427 final int rectHeight = rect.height(); 7428 final int viewWidth = getViewWidth(); 7429 final int viewHeight = getViewHeightWithTitle(); 7430 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7431 scale = mZoomManager.computeScaleWithLimits(scale); 7432 return !mZoomManager.willScaleTriggerZoom(scale) 7433 && contentToViewX(rect.left) >= mScrollX 7434 && contentToViewX(rect.right) <= mScrollX + viewWidth 7435 && contentToViewY(rect.top) >= mScrollY 7436 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7437 } 7438 7439 /* 7440 * Maximize and center the rectangle, specified in the document coordinate 7441 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7442 * animated scroll to center it. If the zoom needs to be changed, find the 7443 * zoom center and do a smooth zoom transition. The rect is in document 7444 * coordinates 7445 */ 7446 void centerFitRect(Rect rect) { 7447 final int rectWidth = rect.width(); 7448 final int rectHeight = rect.height(); 7449 final int viewWidth = getViewWidth(); 7450 final int viewHeight = getViewHeightWithTitle(); 7451 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7452 / rectHeight); 7453 scale = mZoomManager.computeScaleWithLimits(scale); 7454 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7455 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7456 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7457 true, 0); 7458 } else { 7459 float actualScale = mZoomManager.getScale(); 7460 float oldScreenX = rect.left * actualScale - mScrollX; 7461 float rectViewX = rect.left * scale; 7462 float rectViewWidth = rectWidth * scale; 7463 float newMaxWidth = mContentWidth * scale; 7464 float newScreenX = (viewWidth - rectViewWidth) / 2; 7465 // pin the newX to the WebView 7466 if (newScreenX > rectViewX) { 7467 newScreenX = rectViewX; 7468 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7469 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7470 } 7471 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7472 / (scale - actualScale); 7473 float oldScreenY = rect.top * actualScale + getTitleHeight() 7474 - mScrollY; 7475 float rectViewY = rect.top * scale + getTitleHeight(); 7476 float rectViewHeight = rectHeight * scale; 7477 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7478 float newScreenY = (viewHeight - rectViewHeight) / 2; 7479 // pin the newY to the WebView 7480 if (newScreenY > rectViewY) { 7481 newScreenY = rectViewY; 7482 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7483 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7484 } 7485 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7486 / (scale - actualScale); 7487 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7488 mZoomManager.startZoomAnimation(scale, false); 7489 } 7490 } 7491 7492 // Called by JNI to handle a touch on a node representing an email address, 7493 // address, or phone number 7494 private void overrideLoading(String url) { 7495 mCallbackProxy.uiOverrideUrlLoading(url); 7496 } 7497 7498 @Override 7499 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7500 // FIXME: If a subwindow is showing find, and the user touches the 7501 // background window, it can steal focus. 7502 if (mFindIsUp) return false; 7503 boolean result = false; 7504 if (inEditingMode()) { 7505 result = mWebTextView.requestFocus(direction, 7506 previouslyFocusedRect); 7507 } else { 7508 result = super.requestFocus(direction, previouslyFocusedRect); 7509 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7510 // For cases such as GMail, where we gain focus from a direction, 7511 // we want to move to the first available link. 7512 // FIXME: If there are no visible links, we may not want to 7513 int fakeKeyDirection = 0; 7514 switch(direction) { 7515 case View.FOCUS_UP: 7516 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7517 break; 7518 case View.FOCUS_DOWN: 7519 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7520 break; 7521 case View.FOCUS_LEFT: 7522 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7523 break; 7524 case View.FOCUS_RIGHT: 7525 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7526 break; 7527 default: 7528 return result; 7529 } 7530 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7531 navHandledKey(fakeKeyDirection, 1, true, 0); 7532 } 7533 } 7534 } 7535 return result; 7536 } 7537 7538 @Override 7539 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7540 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7541 7542 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7543 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7544 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7545 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7546 7547 int measuredHeight = heightSize; 7548 int measuredWidth = widthSize; 7549 7550 // Grab the content size from WebViewCore. 7551 int contentHeight = contentToViewDimension(mContentHeight); 7552 int contentWidth = contentToViewDimension(mContentWidth); 7553 7554// Log.d(LOGTAG, "------- measure " + heightMode); 7555 7556 if (heightMode != MeasureSpec.EXACTLY) { 7557 mHeightCanMeasure = true; 7558 measuredHeight = contentHeight; 7559 if (heightMode == MeasureSpec.AT_MOST) { 7560 // If we are larger than the AT_MOST height, then our height can 7561 // no longer be measured and we should scroll internally. 7562 if (measuredHeight > heightSize) { 7563 measuredHeight = heightSize; 7564 mHeightCanMeasure = false; 7565 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7566 } 7567 } 7568 } else { 7569 mHeightCanMeasure = false; 7570 } 7571 if (mNativeClass != 0) { 7572 nativeSetHeightCanMeasure(mHeightCanMeasure); 7573 } 7574 // For the width, always use the given size unless unspecified. 7575 if (widthMode == MeasureSpec.UNSPECIFIED) { 7576 mWidthCanMeasure = true; 7577 measuredWidth = contentWidth; 7578 } else { 7579 if (measuredWidth < contentWidth) { 7580 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7581 } 7582 mWidthCanMeasure = false; 7583 } 7584 7585 synchronized (this) { 7586 setMeasuredDimension(measuredWidth, measuredHeight); 7587 } 7588 } 7589 7590 @Override 7591 public boolean requestChildRectangleOnScreen(View child, 7592 Rect rect, 7593 boolean immediate) { 7594 if (mNativeClass == 0) { 7595 return false; 7596 } 7597 // don't scroll while in zoom animation. When it is done, we will adjust 7598 // the necessary components (e.g., WebTextView if it is in editing mode) 7599 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7600 return false; 7601 } 7602 7603 rect.offset(child.getLeft() - child.getScrollX(), 7604 child.getTop() - child.getScrollY()); 7605 7606 Rect content = new Rect(viewToContentX(mScrollX), 7607 viewToContentY(mScrollY), 7608 viewToContentX(mScrollX + getWidth() 7609 - getVerticalScrollbarWidth()), 7610 viewToContentY(mScrollY + getViewHeightWithTitle())); 7611 content = nativeSubtractLayers(content); 7612 int screenTop = contentToViewY(content.top); 7613 int screenBottom = contentToViewY(content.bottom); 7614 int height = screenBottom - screenTop; 7615 int scrollYDelta = 0; 7616 7617 if (rect.bottom > screenBottom) { 7618 int oneThirdOfScreenHeight = height / 3; 7619 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7620 // If the rectangle is too tall to fit in the bottom two thirds 7621 // of the screen, place it at the top. 7622 scrollYDelta = rect.top - screenTop; 7623 } else { 7624 // If the rectangle will still fit on screen, we want its 7625 // top to be in the top third of the screen. 7626 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7627 } 7628 } else if (rect.top < screenTop) { 7629 scrollYDelta = rect.top - screenTop; 7630 } 7631 7632 int screenLeft = contentToViewX(content.left); 7633 int screenRight = contentToViewX(content.right); 7634 int width = screenRight - screenLeft; 7635 int scrollXDelta = 0; 7636 7637 if (rect.right > screenRight && rect.left > screenLeft) { 7638 if (rect.width() > width) { 7639 scrollXDelta += (rect.left - screenLeft); 7640 } else { 7641 scrollXDelta += (rect.right - screenRight); 7642 } 7643 } else if (rect.left < screenLeft) { 7644 scrollXDelta -= (screenLeft - rect.left); 7645 } 7646 7647 if ((scrollYDelta | scrollXDelta) != 0) { 7648 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7649 } 7650 7651 return false; 7652 } 7653 7654 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7655 String replace, int newStart, int newEnd) { 7656 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7657 arg.mReplace = replace; 7658 arg.mNewStart = newStart; 7659 arg.mNewEnd = newEnd; 7660 mTextGeneration++; 7661 arg.mTextGeneration = mTextGeneration; 7662 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7663 } 7664 7665 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7666 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7667 arg.mEvent = event; 7668 arg.mCurrentText = currentText; 7669 // Increase our text generation number, and pass it to webcore thread 7670 mTextGeneration++; 7671 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7672 // WebKit's document state is not saved until about to leave the page. 7673 // To make sure the host application, like Browser, has the up to date 7674 // document state when it goes to background, we force to save the 7675 // document state. 7676 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7677 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7678 cursorData(), 1000); 7679 } 7680 7681 /** 7682 * @hide 7683 */ 7684 public synchronized WebViewCore getWebViewCore() { 7685 return mWebViewCore; 7686 } 7687 7688 /** 7689 * Used only by TouchEventQueue to store pending touch events. 7690 */ 7691 private static class QueuedTouch { 7692 long mSequence; 7693 MotionEvent mEvent; // Optional 7694 TouchEventData mTed; // Optional 7695 7696 QueuedTouch mNext; 7697 7698 public QueuedTouch set(TouchEventData ted) { 7699 mSequence = ted.mSequence; 7700 mTed = ted; 7701 mEvent = null; 7702 mNext = null; 7703 return this; 7704 } 7705 7706 public QueuedTouch set(MotionEvent ev, long sequence) { 7707 mEvent = MotionEvent.obtain(ev); 7708 mSequence = sequence; 7709 mTed = null; 7710 mNext = null; 7711 return this; 7712 } 7713 7714 public QueuedTouch add(QueuedTouch other) { 7715 if (other.mSequence < mSequence) { 7716 other.mNext = this; 7717 return other; 7718 } 7719 7720 QueuedTouch insertAt = this; 7721 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7722 insertAt = insertAt.mNext; 7723 } 7724 other.mNext = insertAt.mNext; 7725 insertAt.mNext = other; 7726 return this; 7727 } 7728 } 7729 7730 /** 7731 * WebView handles touch events asynchronously since some events must be passed to WebKit 7732 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7733 * of which path they take to ensure that no events are ever processed out of order 7734 * by WebView. 7735 */ 7736 private class TouchEventQueue { 7737 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7738 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7739 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7740 7741 // Events waiting to be processed. 7742 private QueuedTouch mTouchEventQueue; 7743 7744 // Known events that are waiting on a response before being enqueued. 7745 private QueuedTouch mPreQueue; 7746 7747 // Pool of QueuedTouch objects saved for later use. 7748 private QueuedTouch mQueuedTouchRecycleBin; 7749 private int mQueuedTouchRecycleCount; 7750 7751 private long mLastEventTime = Long.MAX_VALUE; 7752 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7753 7754 // milliseconds until we abandon hope of getting all of a previous gesture 7755 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7756 7757 private QueuedTouch obtainQueuedTouch() { 7758 if (mQueuedTouchRecycleBin != null) { 7759 QueuedTouch result = mQueuedTouchRecycleBin; 7760 mQueuedTouchRecycleBin = result.mNext; 7761 mQueuedTouchRecycleCount--; 7762 return result; 7763 } 7764 return new QueuedTouch(); 7765 } 7766 7767 /** 7768 * Allow events with any currently missing sequence numbers to be skipped in processing. 7769 */ 7770 public void ignoreCurrentlyMissingEvents() { 7771 mIgnoreUntilSequence = mNextTouchSequence; 7772 7773 // Run any events we have available and complete, pre-queued or otherwise. 7774 runQueuedAndPreQueuedEvents(); 7775 } 7776 7777 private void runQueuedAndPreQueuedEvents() { 7778 QueuedTouch qd = mPreQueue; 7779 boolean fromPreQueue = true; 7780 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7781 handleQueuedTouch(qd); 7782 QueuedTouch recycleMe = qd; 7783 if (fromPreQueue) { 7784 mPreQueue = qd.mNext; 7785 } else { 7786 mTouchEventQueue = qd.mNext; 7787 } 7788 recycleQueuedTouch(recycleMe); 7789 mLastHandledTouchSequence++; 7790 7791 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7792 long nextQueued = mTouchEventQueue != null ? 7793 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7794 fromPreQueue = nextPre < nextQueued; 7795 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7796 } 7797 } 7798 7799 /** 7800 * Add a TouchEventData to the pre-queue. 7801 * 7802 * An event in the pre-queue is an event that we know about that 7803 * has been sent to webkit, but that we haven't received back and 7804 * enqueued into the normal touch queue yet. If webkit ever times 7805 * out and we need to ignore currently missing events, we'll run 7806 * events from the pre-queue to patch the holes. 7807 * 7808 * @param ted TouchEventData to pre-queue 7809 */ 7810 public void preQueueTouchEventData(TouchEventData ted) { 7811 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7812 if (mPreQueue == null) { 7813 mPreQueue = newTouch; 7814 } else { 7815 QueuedTouch insertionPoint = mPreQueue; 7816 while (insertionPoint.mNext != null && 7817 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7818 insertionPoint = insertionPoint.mNext; 7819 } 7820 newTouch.mNext = insertionPoint.mNext; 7821 insertionPoint.mNext = newTouch; 7822 } 7823 } 7824 7825 private void recycleQueuedTouch(QueuedTouch qd) { 7826 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7827 qd.mNext = mQueuedTouchRecycleBin; 7828 mQueuedTouchRecycleBin = qd; 7829 mQueuedTouchRecycleCount++; 7830 } 7831 } 7832 7833 /** 7834 * Reset the touch event queue. This will dump any pending events 7835 * and reset the sequence numbering. 7836 */ 7837 public void reset() { 7838 mNextTouchSequence = Long.MIN_VALUE + 1; 7839 mLastHandledTouchSequence = Long.MIN_VALUE; 7840 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7841 while (mTouchEventQueue != null) { 7842 QueuedTouch recycleMe = mTouchEventQueue; 7843 mTouchEventQueue = mTouchEventQueue.mNext; 7844 recycleQueuedTouch(recycleMe); 7845 } 7846 while (mPreQueue != null) { 7847 QueuedTouch recycleMe = mPreQueue; 7848 mPreQueue = mPreQueue.mNext; 7849 recycleQueuedTouch(recycleMe); 7850 } 7851 } 7852 7853 /** 7854 * Return the next valid sequence number for tagging incoming touch events. 7855 * @return The next touch event sequence number 7856 */ 7857 public long nextTouchSequence() { 7858 return mNextTouchSequence++; 7859 } 7860 7861 /** 7862 * Enqueue a touch event in the form of TouchEventData. 7863 * The sequence number will be read from the mSequence field of the argument. 7864 * 7865 * If the touch event's sequence number is the next in line to be processed, it will 7866 * be handled before this method returns. Any subsequent events that have already 7867 * been queued will also be processed in their proper order. 7868 * 7869 * @param ted Touch data to be processed in order. 7870 * @return true if the event was processed before returning, false if it was just enqueued. 7871 */ 7872 public boolean enqueueTouchEvent(TouchEventData ted) { 7873 // Remove from the pre-queue if present 7874 QueuedTouch preQueue = mPreQueue; 7875 if (preQueue != null) { 7876 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7877 // if it was present in the pre-queue, and removed from the pre-queue itself. 7878 if (preQueue.mSequence == ted.mSequence) { 7879 mPreQueue = preQueue.mNext; 7880 } else { 7881 QueuedTouch prev = preQueue; 7882 preQueue = null; 7883 while (prev.mNext != null) { 7884 if (prev.mNext.mSequence == ted.mSequence) { 7885 preQueue = prev.mNext; 7886 prev.mNext = preQueue.mNext; 7887 break; 7888 } else { 7889 prev = prev.mNext; 7890 } 7891 } 7892 } 7893 } 7894 7895 if (ted.mSequence < mLastHandledTouchSequence) { 7896 // Stale event and we already moved on; drop it. (Should not be common.) 7897 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7898 " received from webcore; ignoring"); 7899 return false; 7900 } 7901 7902 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7903 return false; 7904 } 7905 7906 // dropStaleGestures above might have fast-forwarded us to 7907 // an event we have already. 7908 runNextQueuedEvents(); 7909 7910 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7911 if (preQueue != null) { 7912 recycleQueuedTouch(preQueue); 7913 preQueue = null; 7914 } 7915 handleQueuedTouchEventData(ted); 7916 7917 mLastHandledTouchSequence++; 7918 7919 // Do we have any more? Run them if so. 7920 runNextQueuedEvents(); 7921 } else { 7922 // Reuse the pre-queued object if we had it. 7923 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 7924 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7925 } 7926 return true; 7927 } 7928 7929 /** 7930 * Enqueue a touch event in the form of a MotionEvent from the framework. 7931 * 7932 * If the touch event's sequence number is the next in line to be processed, it will 7933 * be handled before this method returns. Any subsequent events that have already 7934 * been queued will also be processed in their proper order. 7935 * 7936 * @param ev MotionEvent to be processed in order 7937 */ 7938 public void enqueueTouchEvent(MotionEvent ev) { 7939 final long sequence = nextTouchSequence(); 7940 7941 if (dropStaleGestures(ev, sequence)) { 7942 return; 7943 } 7944 7945 // dropStaleGestures above might have fast-forwarded us to 7946 // an event we have already. 7947 runNextQueuedEvents(); 7948 7949 if (mLastHandledTouchSequence + 1 == sequence) { 7950 handleQueuedMotionEvent(ev); 7951 7952 mLastHandledTouchSequence++; 7953 7954 // Do we have any more? Run them if so. 7955 runNextQueuedEvents(); 7956 } else { 7957 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7958 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7959 } 7960 } 7961 7962 private void runNextQueuedEvents() { 7963 QueuedTouch qd = mTouchEventQueue; 7964 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7965 handleQueuedTouch(qd); 7966 QueuedTouch recycleMe = qd; 7967 qd = qd.mNext; 7968 recycleQueuedTouch(recycleMe); 7969 mLastHandledTouchSequence++; 7970 } 7971 mTouchEventQueue = qd; 7972 } 7973 7974 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7975 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7976 // This is to make sure that we don't attempt to process a tap 7977 // or long press when webkit takes too long to get back to us. 7978 // The movement will be properly confirmed when we process the 7979 // enqueued event later. 7980 final int dx = Math.round(ev.getX()) - mLastTouchX; 7981 final int dy = Math.round(ev.getY()) - mLastTouchY; 7982 if (dx * dx + dy * dy > mTouchSlopSquare) { 7983 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7984 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7985 } 7986 } 7987 7988 if (mTouchEventQueue == null) { 7989 return sequence <= mLastHandledTouchSequence; 7990 } 7991 7992 // If we have a new down event and it's been a while since the last event 7993 // we saw, catch up as best we can and keep going. 7994 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 7995 long eventTime = ev.getEventTime(); 7996 long lastHandledEventTime = mLastEventTime; 7997 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 7998 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7999 "Catching up."); 8000 runQueuedAndPreQueuedEvents(); 8001 8002 // Drop leftovers that we truly don't have. 8003 QueuedTouch qd = mTouchEventQueue; 8004 while (qd != null && qd.mSequence < sequence) { 8005 QueuedTouch recycleMe = qd; 8006 qd = qd.mNext; 8007 recycleQueuedTouch(recycleMe); 8008 } 8009 mTouchEventQueue = qd; 8010 mLastHandledTouchSequence = sequence - 1; 8011 } 8012 } 8013 8014 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8015 QueuedTouch qd = mTouchEventQueue; 8016 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8017 QueuedTouch recycleMe = qd; 8018 qd = qd.mNext; 8019 recycleQueuedTouch(recycleMe); 8020 } 8021 mTouchEventQueue = qd; 8022 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8023 } 8024 8025 if (mPreQueue != null) { 8026 // Drop stale prequeued events 8027 QueuedTouch qd = mPreQueue; 8028 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8029 QueuedTouch recycleMe = qd; 8030 qd = qd.mNext; 8031 recycleQueuedTouch(recycleMe); 8032 } 8033 mPreQueue = qd; 8034 } 8035 8036 return sequence <= mLastHandledTouchSequence; 8037 } 8038 8039 private void handleQueuedTouch(QueuedTouch qt) { 8040 if (qt.mTed != null) { 8041 handleQueuedTouchEventData(qt.mTed); 8042 } else { 8043 handleQueuedMotionEvent(qt.mEvent); 8044 qt.mEvent.recycle(); 8045 } 8046 } 8047 8048 private void handleQueuedMotionEvent(MotionEvent ev) { 8049 mLastEventTime = ev.getEventTime(); 8050 int action = ev.getActionMasked(); 8051 if (ev.getPointerCount() > 1) { // Multi-touch 8052 handleMultiTouchInWebView(ev); 8053 } else { 8054 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8055 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8056 // ScaleGestureDetector needs a consistent event stream to operate properly. 8057 // It won't take any action with fewer than two pointers, but it needs to 8058 // update internal bookkeeping state. 8059 detector.onTouchEvent(ev); 8060 } 8061 8062 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8063 } 8064 } 8065 8066 private void handleQueuedTouchEventData(TouchEventData ted) { 8067 if (ted.mMotionEvent != null) { 8068 mLastEventTime = ted.mMotionEvent.getEventTime(); 8069 } 8070 if (!ted.mReprocess) { 8071 if (ted.mAction == MotionEvent.ACTION_DOWN 8072 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8073 // if prevent default is called from WebCore, UI 8074 // will not handle the rest of the touch events any 8075 // more. 8076 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8077 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8078 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8079 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8080 // the return for the first ACTION_MOVE will decide 8081 // whether UI will handle touch or not. Currently no 8082 // support for alternating prevent default 8083 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8084 : PREVENT_DEFAULT_NO; 8085 } 8086 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8087 mTouchHighlightRegion.setEmpty(); 8088 } 8089 } else { 8090 if (ted.mPoints.length > 1) { // multi-touch 8091 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8092 mPreventDefault = PREVENT_DEFAULT_NO; 8093 handleMultiTouchInWebView(ted.mMotionEvent); 8094 } else { 8095 mPreventDefault = PREVENT_DEFAULT_YES; 8096 } 8097 return; 8098 } 8099 8100 // prevent default is not called in WebCore, so the 8101 // message needs to be reprocessed in UI 8102 if (!ted.mNativeResult) { 8103 // Following is for single touch. 8104 switch (ted.mAction) { 8105 case MotionEvent.ACTION_DOWN: 8106 mLastDeferTouchX = ted.mPointsInView[0].x; 8107 mLastDeferTouchY = ted.mPointsInView[0].y; 8108 mDeferTouchMode = TOUCH_INIT_MODE; 8109 break; 8110 case MotionEvent.ACTION_MOVE: { 8111 // no snapping in defer process 8112 int x = ted.mPointsInView[0].x; 8113 int y = ted.mPointsInView[0].y; 8114 8115 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8116 mDeferTouchMode = TOUCH_DRAG_MODE; 8117 mLastDeferTouchX = x; 8118 mLastDeferTouchY = y; 8119 startScrollingLayer(x, y); 8120 startDrag(); 8121 } 8122 int deltaX = pinLocX((int) (mScrollX 8123 + mLastDeferTouchX - x)) 8124 - mScrollX; 8125 int deltaY = pinLocY((int) (mScrollY 8126 + mLastDeferTouchY - y)) 8127 - mScrollY; 8128 doDrag(deltaX, deltaY); 8129 if (deltaX != 0) mLastDeferTouchX = x; 8130 if (deltaY != 0) mLastDeferTouchY = y; 8131 break; 8132 } 8133 case MotionEvent.ACTION_UP: 8134 case MotionEvent.ACTION_CANCEL: 8135 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8136 // no fling in defer process 8137 mScroller.springBack(mScrollX, mScrollY, 0, 8138 computeMaxScrollX(), 0, 8139 computeMaxScrollY()); 8140 invalidate(); 8141 WebViewCore.resumePriority(); 8142 WebViewCore.resumeUpdatePicture(mWebViewCore); 8143 } 8144 mDeferTouchMode = TOUCH_DONE_MODE; 8145 break; 8146 case WebViewCore.ACTION_DOUBLETAP: 8147 // doDoubleTap() needs mLastTouchX/Y as anchor 8148 mLastDeferTouchX = ted.mPointsInView[0].x; 8149 mLastDeferTouchY = ted.mPointsInView[0].y; 8150 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8151 mDeferTouchMode = TOUCH_DONE_MODE; 8152 break; 8153 case WebViewCore.ACTION_LONGPRESS: 8154 HitTestResult hitTest = getHitTestResult(); 8155 if (hitTest != null && hitTest.mType 8156 != HitTestResult.UNKNOWN_TYPE) { 8157 performLongClick(); 8158 } 8159 mDeferTouchMode = TOUCH_DONE_MODE; 8160 break; 8161 } 8162 } 8163 } 8164 } 8165 } 8166 8167 //------------------------------------------------------------------------- 8168 // Methods can be called from a separate thread, like WebViewCore 8169 // If it needs to call the View system, it has to send message. 8170 //------------------------------------------------------------------------- 8171 8172 /** 8173 * General handler to receive message coming from webkit thread 8174 */ 8175 class PrivateHandler extends Handler { 8176 @Override 8177 public void handleMessage(Message msg) { 8178 // exclude INVAL_RECT_MSG_ID since it is frequently output 8179 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8180 if (msg.what >= FIRST_PRIVATE_MSG_ID 8181 && msg.what <= LAST_PRIVATE_MSG_ID) { 8182 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8183 - FIRST_PRIVATE_MSG_ID]); 8184 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8185 && msg.what <= LAST_PACKAGE_MSG_ID) { 8186 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8187 - FIRST_PACKAGE_MSG_ID]); 8188 } else { 8189 Log.v(LOGTAG, Integer.toString(msg.what)); 8190 } 8191 } 8192 if (mWebViewCore == null) { 8193 // after WebView's destroy() is called, skip handling messages. 8194 return; 8195 } 8196 if (mBlockWebkitViewMessages 8197 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8198 // Blocking messages from webkit 8199 return; 8200 } 8201 switch (msg.what) { 8202 case REMEMBER_PASSWORD: { 8203 mDatabase.setUsernamePassword( 8204 msg.getData().getString("host"), 8205 msg.getData().getString("username"), 8206 msg.getData().getString("password")); 8207 ((Message) msg.obj).sendToTarget(); 8208 break; 8209 } 8210 case NEVER_REMEMBER_PASSWORD: { 8211 mDatabase.setUsernamePassword( 8212 msg.getData().getString("host"), null, null); 8213 ((Message) msg.obj).sendToTarget(); 8214 break; 8215 } 8216 case PREVENT_DEFAULT_TIMEOUT: { 8217 // if timeout happens, cancel it so that it won't block UI 8218 // to continue handling touch events 8219 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8220 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8221 || (msg.arg1 == MotionEvent.ACTION_MOVE 8222 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8223 cancelWebCoreTouchEvent( 8224 viewToContentX(mLastTouchX + mScrollX), 8225 viewToContentY(mLastTouchY + mScrollY), 8226 true); 8227 } 8228 break; 8229 } 8230 case SCROLL_SELECT_TEXT: { 8231 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8232 mSentAutoScrollMessage = false; 8233 break; 8234 } 8235 if (mScrollingLayer == 0) { 8236 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8237 } else { 8238 mScrollingLayerRect.left += mAutoScrollX; 8239 mScrollingLayerRect.top += mAutoScrollY; 8240 nativeScrollLayer(mScrollingLayer, 8241 mScrollingLayerRect.left, 8242 mScrollingLayerRect.top); 8243 invalidate(); 8244 } 8245 sendEmptyMessageDelayed( 8246 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8247 break; 8248 } 8249 case UPDATE_SELECTION: { 8250 if (mTouchMode == TOUCH_INIT_MODE 8251 || mTouchMode == TOUCH_SHORTPRESS_MODE 8252 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8253 updateSelection(); 8254 } 8255 break; 8256 } 8257 case SWITCH_TO_SHORTPRESS: { 8258 mInitialHitTestResult = null; // set by updateSelection() 8259 if (mTouchMode == TOUCH_INIT_MODE) { 8260 if (!getSettings().supportTouchOnly() 8261 && mPreventDefault != PREVENT_DEFAULT_YES) { 8262 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8263 updateSelection(); 8264 } else { 8265 // set to TOUCH_SHORTPRESS_MODE so that it won't 8266 // trigger double tap any more 8267 mTouchMode = TOUCH_SHORTPRESS_MODE; 8268 } 8269 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8270 mTouchMode = TOUCH_DONE_MODE; 8271 } 8272 break; 8273 } 8274 case SWITCH_TO_LONGPRESS: { 8275 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 8276 removeTouchHighlight(); 8277 } 8278 if (inFullScreenMode() || mDeferTouchProcess) { 8279 TouchEventData ted = new TouchEventData(); 8280 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8281 ted.mIds = new int[1]; 8282 ted.mIds[0] = 0; 8283 ted.mPoints = new Point[1]; 8284 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8285 viewToContentY(mLastTouchY + mScrollY)); 8286 ted.mPointsInView = new Point[1]; 8287 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8288 // metaState for long press is tricky. Should it be the 8289 // state when the press started or when the press was 8290 // released? Or some intermediary key state? For 8291 // simplicity for now, we don't set it. 8292 ted.mMetaState = 0; 8293 ted.mReprocess = mDeferTouchProcess; 8294 ted.mNativeLayer = nativeScrollableLayer( 8295 ted.mPoints[0].x, ted.mPoints[0].y, 8296 ted.mNativeLayerRect, null); 8297 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8298 mTouchEventQueue.preQueueTouchEventData(ted); 8299 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8300 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8301 mTouchMode = TOUCH_DONE_MODE; 8302 performLongClick(); 8303 } 8304 break; 8305 } 8306 case RELEASE_SINGLE_TAP: { 8307 doShortPress(); 8308 break; 8309 } 8310 case SCROLL_TO_MSG_ID: { 8311 // arg1 = animate, arg2 = onlyIfImeIsShowing 8312 // obj = Point(x, y) 8313 if (msg.arg2 == 1) { 8314 // This scroll is intended to bring the textfield into 8315 // view, but is only necessary if the IME is showing 8316 InputMethodManager imm = InputMethodManager.peekInstance(); 8317 if (imm == null || !imm.isAcceptingText() 8318 || (!imm.isActive(WebView.this) && (!inEditingMode() 8319 || !imm.isActive(mWebTextView)))) { 8320 break; 8321 } 8322 } 8323 final Point p = (Point) msg.obj; 8324 if (msg.arg1 == 1) { 8325 spawnContentScrollTo(p.x, p.y); 8326 } else { 8327 setContentScrollTo(p.x, p.y); 8328 } 8329 break; 8330 } 8331 case UPDATE_ZOOM_RANGE: { 8332 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8333 // mScrollX contains the new minPrefWidth 8334 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8335 break; 8336 } 8337 case REPLACE_BASE_CONTENT: { 8338 nativeReplaceBaseContent(msg.arg1); 8339 break; 8340 } 8341 case NEW_PICTURE_MSG_ID: { 8342 // called for new content 8343 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8344 setNewPicture(draw, true); 8345 break; 8346 } 8347 case WEBCORE_INITIALIZED_MSG_ID: 8348 // nativeCreate sets mNativeClass to a non-zero value 8349 String drawableDir = BrowserFrame.getRawResFilename( 8350 BrowserFrame.DRAWABLEDIR, mContext); 8351 nativeCreate(msg.arg1, drawableDir); 8352 if (mDelaySetPicture != null) { 8353 setNewPicture(mDelaySetPicture, true); 8354 mDelaySetPicture = null; 8355 } 8356 break; 8357 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8358 // Make sure that the textfield is currently focused 8359 // and representing the same node as the pointer. 8360 if (inEditingMode() && 8361 mWebTextView.isSameTextField(msg.arg1)) { 8362 if (msg.arg2 == mTextGeneration) { 8363 String text = (String) msg.obj; 8364 if (null == text) { 8365 text = ""; 8366 } 8367 mWebTextView.setTextAndKeepSelection(text); 8368 } 8369 } 8370 break; 8371 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8372 displaySoftKeyboard(true); 8373 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8374 case UPDATE_TEXT_SELECTION_MSG_ID: 8375 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8376 (WebViewCore.TextSelectionData) msg.obj); 8377 break; 8378 case FORM_DID_BLUR: 8379 if (inEditingMode() 8380 && mWebTextView.isSameTextField(msg.arg1)) { 8381 hideSoftKeyboard(); 8382 } 8383 break; 8384 case RETURN_LABEL: 8385 if (inEditingMode() 8386 && mWebTextView.isSameTextField(msg.arg1)) { 8387 mWebTextView.setHint((String) msg.obj); 8388 InputMethodManager imm 8389 = InputMethodManager.peekInstance(); 8390 // The hint is propagated to the IME in 8391 // onCreateInputConnection. If the IME is already 8392 // active, restart it so that its hint text is updated. 8393 if (imm != null && imm.isActive(mWebTextView)) { 8394 imm.restartInput(mWebTextView); 8395 } 8396 } 8397 break; 8398 case UNHANDLED_NAV_KEY: 8399 navHandledKey(msg.arg1, 1, false, 0); 8400 break; 8401 case UPDATE_TEXT_ENTRY_MSG_ID: 8402 // this is sent after finishing resize in WebViewCore. Make 8403 // sure the text edit box is still on the screen. 8404 if (inEditingMode() && nativeCursorIsTextInput()) { 8405 rebuildWebTextView(); 8406 } 8407 break; 8408 case CLEAR_TEXT_ENTRY: 8409 clearTextEntry(); 8410 break; 8411 case INVAL_RECT_MSG_ID: { 8412 Rect r = (Rect)msg.obj; 8413 if (r == null) { 8414 invalidate(); 8415 } else { 8416 // we need to scale r from content into view coords, 8417 // which viewInvalidate() does for us 8418 viewInvalidate(r.left, r.top, r.right, r.bottom); 8419 } 8420 break; 8421 } 8422 case REQUEST_FORM_DATA: 8423 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8424 if (mWebTextView.isSameTextField(msg.arg1)) { 8425 mWebTextView.setAdapterCustom(adapter); 8426 } 8427 break; 8428 case RESUME_WEBCORE_PRIORITY: 8429 WebViewCore.resumePriority(); 8430 WebViewCore.resumeUpdatePicture(mWebViewCore); 8431 break; 8432 8433 case LONG_PRESS_CENTER: 8434 // as this is shared by keydown and trackballdown, reset all 8435 // the states 8436 mGotCenterDown = false; 8437 mTrackballDown = false; 8438 performLongClick(); 8439 break; 8440 8441 case WEBCORE_NEED_TOUCH_EVENTS: 8442 mForwardTouchEvents = (msg.arg1 != 0); 8443 break; 8444 8445 case PREVENT_TOUCH_ID: 8446 if (inFullScreenMode()) { 8447 break; 8448 } 8449 TouchEventData ted = (TouchEventData) msg.obj; 8450 8451 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8452 // WebCore is responding to us; remove pending timeout. 8453 // It will be re-posted when needed. 8454 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8455 } 8456 break; 8457 8458 case REQUEST_KEYBOARD: 8459 if (msg.arg1 == 0) { 8460 hideSoftKeyboard(); 8461 } else { 8462 displaySoftKeyboard(false); 8463 } 8464 break; 8465 8466 case FIND_AGAIN: 8467 // Ignore if find has been dismissed. 8468 if (mFindIsUp && mFindCallback != null) { 8469 mFindCallback.findAll(); 8470 } 8471 break; 8472 8473 case DRAG_HELD_MOTIONLESS: 8474 mHeldMotionless = MOTIONLESS_TRUE; 8475 invalidate(); 8476 // fall through to keep scrollbars awake 8477 8478 case AWAKEN_SCROLL_BARS: 8479 if (mTouchMode == TOUCH_DRAG_MODE 8480 && mHeldMotionless == MOTIONLESS_TRUE) { 8481 awakenScrollBars(ViewConfiguration 8482 .getScrollDefaultDelay(), false); 8483 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8484 .obtainMessage(AWAKEN_SCROLL_BARS), 8485 ViewConfiguration.getScrollDefaultDelay()); 8486 } 8487 break; 8488 8489 case DO_MOTION_UP: 8490 doMotionUp(msg.arg1, msg.arg2); 8491 break; 8492 8493 case SCREEN_ON: 8494 setKeepScreenOn(msg.arg1 == 1); 8495 break; 8496 8497 case ENTER_FULLSCREEN_VIDEO: 8498 int layerId = msg.arg1; 8499 8500 String url = (String) msg.obj; 8501 if (mHTML5VideoViewProxy != null) { 8502 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8503 } 8504 break; 8505 8506 case SHOW_FULLSCREEN: { 8507 View view = (View) msg.obj; 8508 int orientation = msg.arg1; 8509 int npp = msg.arg2; 8510 8511 if (inFullScreenMode()) { 8512 Log.w(LOGTAG, "Should not have another full screen."); 8513 dismissFullScreenMode(); 8514 } 8515 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8516 mFullScreenHolder.setContentView(view); 8517 mFullScreenHolder.show(); 8518 8519 break; 8520 } 8521 case HIDE_FULLSCREEN: 8522 dismissFullScreenMode(); 8523 break; 8524 8525 case DOM_FOCUS_CHANGED: 8526 if (inEditingMode()) { 8527 nativeClearCursor(); 8528 rebuildWebTextView(); 8529 } 8530 break; 8531 8532 case SHOW_RECT_MSG_ID: { 8533 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8534 int x = mScrollX; 8535 int left = contentToViewX(data.mLeft); 8536 int width = contentToViewDimension(data.mWidth); 8537 int maxWidth = contentToViewDimension(data.mContentWidth); 8538 int viewWidth = getViewWidth(); 8539 if (width < viewWidth) { 8540 // center align 8541 x += left + width / 2 - mScrollX - viewWidth / 2; 8542 } else { 8543 x += (int) (left + data.mXPercentInDoc * width 8544 - mScrollX - data.mXPercentInView * viewWidth); 8545 } 8546 if (DebugFlags.WEB_VIEW) { 8547 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8548 width + ",maxWidth=" + maxWidth + 8549 ",viewWidth=" + viewWidth + ",x=" 8550 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8551 ",xPercentInView=" + data.mXPercentInView+ ")"); 8552 } 8553 // use the passing content width to cap x as the current 8554 // mContentWidth may not be updated yet 8555 x = Math.max(0, 8556 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8557 int top = contentToViewY(data.mTop); 8558 int height = contentToViewDimension(data.mHeight); 8559 int maxHeight = contentToViewDimension(data.mContentHeight); 8560 int viewHeight = getViewHeight(); 8561 int y = (int) (top + data.mYPercentInDoc * height - 8562 data.mYPercentInView * viewHeight); 8563 if (DebugFlags.WEB_VIEW) { 8564 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8565 height + ",maxHeight=" + maxHeight + 8566 ",viewHeight=" + viewHeight + ",y=" 8567 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8568 ",yPercentInView=" + data.mYPercentInView+ ")"); 8569 } 8570 // use the passing content height to cap y as the current 8571 // mContentHeight may not be updated yet 8572 y = Math.max(0, 8573 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8574 // We need to take into account the visible title height 8575 // when scrolling since y is an absolute view position. 8576 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8577 scrollTo(x, y); 8578 } 8579 break; 8580 8581 case CENTER_FIT_RECT: 8582 centerFitRect((Rect)msg.obj); 8583 break; 8584 8585 case SET_SCROLLBAR_MODES: 8586 mHorizontalScrollBarMode = msg.arg1; 8587 mVerticalScrollBarMode = msg.arg2; 8588 break; 8589 8590 case SELECTION_STRING_CHANGED: 8591 if (mAccessibilityInjector != null) { 8592 String selectionString = (String) msg.obj; 8593 mAccessibilityInjector.onSelectionStringChange(selectionString); 8594 } 8595 break; 8596 8597 case SET_TOUCH_HIGHLIGHT_RECTS: 8598 @SuppressWarnings("unchecked") 8599 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8600 setTouchHighlightRects(rects); 8601 break; 8602 8603 case SAVE_WEBARCHIVE_FINISHED: 8604 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8605 if (saveMessage.mCallback != null) { 8606 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8607 } 8608 break; 8609 8610 case SET_AUTOFILLABLE: 8611 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8612 if (mWebTextView != null) { 8613 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8614 rebuildWebTextView(); 8615 } 8616 break; 8617 8618 case AUTOFILL_COMPLETE: 8619 if (mWebTextView != null) { 8620 // Clear the WebTextView adapter when AutoFill finishes 8621 // so that the drop down gets cleared. 8622 mWebTextView.setAdapterCustom(null); 8623 } 8624 break; 8625 8626 case SELECT_AT: 8627 nativeSelectAt(msg.arg1, msg.arg2); 8628 break; 8629 8630 default: 8631 super.handleMessage(msg); 8632 break; 8633 } 8634 } 8635 } 8636 8637 private void setTouchHighlightRects(ArrayList<Rect> rects) { 8638 invalidate(mTouchHighlightRegion.getBounds()); 8639 mTouchHighlightRegion.setEmpty(); 8640 if (rects != null) { 8641 for (Rect rect : rects) { 8642 Rect viewRect = contentToViewRect(rect); 8643 // some sites, like stories in nytimes.com, set 8644 // mouse event handler in the top div. It is not 8645 // user friendly to highlight the div if it covers 8646 // more than half of the screen. 8647 if (viewRect.width() < getWidth() >> 1 8648 || viewRect.height() < getHeight() >> 1) { 8649 mTouchHighlightRegion.union(viewRect); 8650 } else { 8651 Log.w(LOGTAG, "Skip the huge selection rect:" 8652 + viewRect); 8653 } 8654 } 8655 invalidate(mTouchHighlightRegion.getBounds()); 8656 } 8657 } 8658 8659 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8660 * acceleration) */ 8661 protected void pageSwapCallback() { 8662 if (inEditingMode()) { 8663 didUpdateWebTextViewDimensions(ANYWHERE); 8664 } 8665 } 8666 8667 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8668 if (mNativeClass == 0) { 8669 if (mDelaySetPicture != null) { 8670 throw new IllegalStateException("Tried to setNewPicture with" 8671 + " a delay picture already set! (memory leak)"); 8672 } 8673 // Not initialized yet, delay set 8674 mDelaySetPicture = draw; 8675 return; 8676 } 8677 WebViewCore.ViewState viewState = draw.mViewState; 8678 boolean isPictureAfterFirstLayout = viewState != null; 8679 8680 if (updateBaseLayer) { 8681 // Request a callback on pageSwap (to reposition the webtextview) 8682 boolean registerPageSwapCallback = 8683 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8684 8685 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8686 getSettings().getShowVisualIndicator(), 8687 isPictureAfterFirstLayout, registerPageSwapCallback); 8688 } 8689 final Point viewSize = draw.mViewSize; 8690 if (isPictureAfterFirstLayout) { 8691 // Reset the last sent data here since dealing with new page. 8692 mLastWidthSent = 0; 8693 mZoomManager.onFirstLayout(draw); 8694 if (!mDrawHistory) { 8695 // Do not send the scroll event for this particular 8696 // scroll message. Note that a scroll event may 8697 // still be fired if the user scrolls before the 8698 // message can be handled. 8699 mSendScrollEvent = false; 8700 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 8701 mSendScrollEvent = true; 8702 8703 // As we are on a new page, remove the WebTextView. This 8704 // is necessary for page loads driven by webkit, and in 8705 // particular when the user was on a password field, so 8706 // the WebTextView was visible. 8707 clearTextEntry(); 8708 } 8709 } 8710 8711 // We update the layout (i.e. request a layout from the 8712 // view system) if the last view size that we sent to 8713 // WebCore matches the view size of the picture we just 8714 // received in the fixed dimension. 8715 final boolean updateLayout = viewSize.x == mLastWidthSent 8716 && viewSize.y == mLastHeightSent; 8717 // Don't send scroll event for picture coming from webkit, 8718 // since the new picture may cause a scroll event to override 8719 // the saved history scroll position. 8720 mSendScrollEvent = false; 8721 recordNewContentSize(draw.mContentSize.x, 8722 draw.mContentSize.y, updateLayout); 8723 mSendScrollEvent = true; 8724 if (DebugFlags.WEB_VIEW) { 8725 Rect b = draw.mInvalRegion.getBounds(); 8726 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8727 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8728 } 8729 invalidateContentRect(draw.mInvalRegion.getBounds()); 8730 8731 if (mPictureListener != null) { 8732 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8733 } 8734 8735 // update the zoom information based on the new picture 8736 mZoomManager.onNewPicture(draw); 8737 8738 if (draw.mFocusSizeChanged && inEditingMode()) { 8739 mFocusSizeChanged = true; 8740 } 8741 if (isPictureAfterFirstLayout) { 8742 mViewManager.postReadyToDrawAll(); 8743 } 8744 } 8745 8746 /** 8747 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8748 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8749 */ 8750 private void updateTextSelectionFromMessage(int nodePointer, 8751 int textGeneration, WebViewCore.TextSelectionData data) { 8752 if (inEditingMode() 8753 && mWebTextView.isSameTextField(nodePointer) 8754 && textGeneration == mTextGeneration) { 8755 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8756 } 8757 } 8758 8759 // Class used to use a dropdown for a <select> element 8760 private class InvokeListBox implements Runnable { 8761 // Whether the listbox allows multiple selection. 8762 private boolean mMultiple; 8763 // Passed in to a list with multiple selection to tell 8764 // which items are selected. 8765 private int[] mSelectedArray; 8766 // Passed in to a list with single selection to tell 8767 // where the initial selection is. 8768 private int mSelection; 8769 8770 private Container[] mContainers; 8771 8772 // Need these to provide stable ids to my ArrayAdapter, 8773 // which normally does not have stable ids. (Bug 1250098) 8774 private class Container extends Object { 8775 /** 8776 * Possible values for mEnabled. Keep in sync with OptionStatus in 8777 * WebViewCore.cpp 8778 */ 8779 final static int OPTGROUP = -1; 8780 final static int OPTION_DISABLED = 0; 8781 final static int OPTION_ENABLED = 1; 8782 8783 String mString; 8784 int mEnabled; 8785 int mId; 8786 8787 @Override 8788 public String toString() { 8789 return mString; 8790 } 8791 } 8792 8793 /** 8794 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8795 * and allow filtering. 8796 */ 8797 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8798 public MyArrayListAdapter() { 8799 super(mContext, 8800 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8801 com.android.internal.R.layout.webview_select_singlechoice, 8802 mContainers); 8803 } 8804 8805 @Override 8806 public View getView(int position, View convertView, 8807 ViewGroup parent) { 8808 // Always pass in null so that we will get a new CheckedTextView 8809 // Otherwise, an item which was previously used as an <optgroup> 8810 // element (i.e. has no check), could get used as an <option> 8811 // element, which needs a checkbox/radio, but it would not have 8812 // one. 8813 convertView = super.getView(position, null, parent); 8814 Container c = item(position); 8815 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8816 // ListView does not draw dividers between disabled and 8817 // enabled elements. Use a LinearLayout to provide dividers 8818 LinearLayout layout = new LinearLayout(mContext); 8819 layout.setOrientation(LinearLayout.VERTICAL); 8820 if (position > 0) { 8821 View dividerTop = new View(mContext); 8822 dividerTop.setBackgroundResource( 8823 android.R.drawable.divider_horizontal_bright); 8824 layout.addView(dividerTop); 8825 } 8826 8827 if (Container.OPTGROUP == c.mEnabled) { 8828 // Currently select_dialog_multichoice uses CheckedTextViews. 8829 // If that changes, the class cast will no longer be valid. 8830 if (mMultiple) { 8831 Assert.assertTrue(convertView instanceof CheckedTextView); 8832 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8833 } 8834 } else { 8835 // c.mEnabled == Container.OPTION_DISABLED 8836 // Draw the disabled element in a disabled state. 8837 convertView.setEnabled(false); 8838 } 8839 8840 layout.addView(convertView); 8841 if (position < getCount() - 1) { 8842 View dividerBottom = new View(mContext); 8843 dividerBottom.setBackgroundResource( 8844 android.R.drawable.divider_horizontal_bright); 8845 layout.addView(dividerBottom); 8846 } 8847 return layout; 8848 } 8849 return convertView; 8850 } 8851 8852 @Override 8853 public boolean hasStableIds() { 8854 // AdapterView's onChanged method uses this to determine whether 8855 // to restore the old state. Return false so that the old (out 8856 // of date) state does not replace the new, valid state. 8857 return false; 8858 } 8859 8860 private Container item(int position) { 8861 if (position < 0 || position >= getCount()) { 8862 return null; 8863 } 8864 return (Container) getItem(position); 8865 } 8866 8867 @Override 8868 public long getItemId(int position) { 8869 Container item = item(position); 8870 if (item == null) { 8871 return -1; 8872 } 8873 return item.mId; 8874 } 8875 8876 @Override 8877 public boolean areAllItemsEnabled() { 8878 return false; 8879 } 8880 8881 @Override 8882 public boolean isEnabled(int position) { 8883 Container item = item(position); 8884 if (item == null) { 8885 return false; 8886 } 8887 return Container.OPTION_ENABLED == item.mEnabled; 8888 } 8889 } 8890 8891 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8892 mMultiple = true; 8893 mSelectedArray = selected; 8894 8895 int length = array.length; 8896 mContainers = new Container[length]; 8897 for (int i = 0; i < length; i++) { 8898 mContainers[i] = new Container(); 8899 mContainers[i].mString = array[i]; 8900 mContainers[i].mEnabled = enabled[i]; 8901 mContainers[i].mId = i; 8902 } 8903 } 8904 8905 private InvokeListBox(String[] array, int[] enabled, int selection) { 8906 mSelection = selection; 8907 mMultiple = false; 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 /* 8920 * Whenever the data set changes due to filtering, this class ensures 8921 * that the checked item remains checked. 8922 */ 8923 private class SingleDataSetObserver extends DataSetObserver { 8924 private long mCheckedId; 8925 private ListView mListView; 8926 private Adapter mAdapter; 8927 8928 /* 8929 * Create a new observer. 8930 * @param id The ID of the item to keep checked. 8931 * @param l ListView for getting and clearing the checked states 8932 * @param a Adapter for getting the IDs 8933 */ 8934 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8935 mCheckedId = id; 8936 mListView = l; 8937 mAdapter = a; 8938 } 8939 8940 @Override 8941 public void onChanged() { 8942 // The filter may have changed which item is checked. Find the 8943 // item that the ListView thinks is checked. 8944 int position = mListView.getCheckedItemPosition(); 8945 long id = mAdapter.getItemId(position); 8946 if (mCheckedId != id) { 8947 // Clear the ListView's idea of the checked item, since 8948 // it is incorrect 8949 mListView.clearChoices(); 8950 // Search for mCheckedId. If it is in the filtered list, 8951 // mark it as checked 8952 int count = mAdapter.getCount(); 8953 for (int i = 0; i < count; i++) { 8954 if (mAdapter.getItemId(i) == mCheckedId) { 8955 mListView.setItemChecked(i, true); 8956 break; 8957 } 8958 } 8959 } 8960 } 8961 } 8962 8963 public void run() { 8964 final ListView listView = (ListView) LayoutInflater.from(mContext) 8965 .inflate(com.android.internal.R.layout.select_dialog, null); 8966 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8967 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8968 .setView(listView).setCancelable(true) 8969 .setInverseBackgroundForced(true); 8970 8971 if (mMultiple) { 8972 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8973 public void onClick(DialogInterface dialog, int which) { 8974 mWebViewCore.sendMessage( 8975 EventHub.LISTBOX_CHOICES, 8976 adapter.getCount(), 0, 8977 listView.getCheckedItemPositions()); 8978 }}); 8979 b.setNegativeButton(android.R.string.cancel, 8980 new DialogInterface.OnClickListener() { 8981 public void onClick(DialogInterface dialog, int which) { 8982 mWebViewCore.sendMessage( 8983 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8984 }}); 8985 } 8986 mListBoxDialog = b.create(); 8987 listView.setAdapter(adapter); 8988 listView.setFocusableInTouchMode(true); 8989 // There is a bug (1250103) where the checks in a ListView with 8990 // multiple items selected are associated with the positions, not 8991 // the ids, so the items do not properly retain their checks when 8992 // filtered. Do not allow filtering on multiple lists until 8993 // that bug is fixed. 8994 8995 listView.setTextFilterEnabled(!mMultiple); 8996 if (mMultiple) { 8997 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8998 int length = mSelectedArray.length; 8999 for (int i = 0; i < length; i++) { 9000 listView.setItemChecked(mSelectedArray[i], true); 9001 } 9002 } else { 9003 listView.setOnItemClickListener(new OnItemClickListener() { 9004 public void onItemClick(AdapterView<?> parent, View v, 9005 int position, long id) { 9006 // Rather than sending the message right away, send it 9007 // after the page regains focus. 9008 mListBoxMessage = Message.obtain(null, 9009 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9010 mListBoxDialog.dismiss(); 9011 mListBoxDialog = null; 9012 } 9013 }); 9014 if (mSelection != -1) { 9015 listView.setSelection(mSelection); 9016 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9017 listView.setItemChecked(mSelection, true); 9018 DataSetObserver observer = new SingleDataSetObserver( 9019 adapter.getItemId(mSelection), listView, adapter); 9020 adapter.registerDataSetObserver(observer); 9021 } 9022 } 9023 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9024 public void onCancel(DialogInterface dialog) { 9025 mWebViewCore.sendMessage( 9026 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9027 mListBoxDialog = null; 9028 } 9029 }); 9030 mListBoxDialog.show(); 9031 } 9032 } 9033 9034 private Message mListBoxMessage; 9035 9036 /* 9037 * Request a dropdown menu for a listbox with multiple selection. 9038 * 9039 * @param array Labels for the listbox. 9040 * @param enabledArray State for each element in the list. See static 9041 * integers in Container class. 9042 * @param selectedArray Which positions are initally selected. 9043 */ 9044 void requestListBox(String[] array, int[] enabledArray, int[] 9045 selectedArray) { 9046 mPrivateHandler.post( 9047 new InvokeListBox(array, enabledArray, selectedArray)); 9048 } 9049 9050 /* 9051 * Request a dropdown menu for a listbox with single selection or a single 9052 * <select> element. 9053 * 9054 * @param array Labels for the listbox. 9055 * @param enabledArray State for each element in the list. See static 9056 * integers in Container class. 9057 * @param selection Which position is initally selected. 9058 */ 9059 void requestListBox(String[] array, int[] enabledArray, int selection) { 9060 mPrivateHandler.post( 9061 new InvokeListBox(array, enabledArray, selection)); 9062 } 9063 9064 // called by JNI 9065 private void sendMoveFocus(int frame, int node) { 9066 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9067 new WebViewCore.CursorData(frame, node, 0, 0)); 9068 } 9069 9070 // called by JNI 9071 private void sendMoveMouse(int frame, int node, int x, int y) { 9072 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9073 new WebViewCore.CursorData(frame, node, x, y)); 9074 } 9075 9076 /* 9077 * Send a mouse move event to the webcore thread. 9078 * 9079 * @param removeFocus Pass true to remove the WebTextView, if present. 9080 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9081 * called by JNI 9082 */ 9083 @SuppressWarnings("unused") 9084 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9085 if (removeFocus) { 9086 clearTextEntry(); 9087 } 9088 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9089 stopPaintingCaret ? 1 : 0, 0, 9090 cursorData()); 9091 } 9092 9093 /** 9094 * Called by JNI to send a message to the webcore thread that the user 9095 * touched the webpage. 9096 * @param touchGeneration Generation number of the touch, to ignore touches 9097 * after a new one has been generated. 9098 * @param frame Pointer to the frame holding the node that was touched. 9099 * @param node Pointer to the node touched. 9100 * @param x x-position of the touch. 9101 * @param y y-position of the touch. 9102 */ 9103 private void sendMotionUp(int touchGeneration, 9104 int frame, int node, int x, int y) { 9105 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9106 touchUpData.mMoveGeneration = touchGeneration; 9107 touchUpData.mFrame = frame; 9108 touchUpData.mNode = node; 9109 touchUpData.mX = x; 9110 touchUpData.mY = y; 9111 touchUpData.mNativeLayer = nativeScrollableLayer( 9112 x, y, touchUpData.mNativeLayerRect, null); 9113 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9114 } 9115 9116 9117 private int getScaledMaxXScroll() { 9118 int width; 9119 if (mHeightCanMeasure == false) { 9120 width = getViewWidth() / 4; 9121 } else { 9122 Rect visRect = new Rect(); 9123 calcOurVisibleRect(visRect); 9124 width = visRect.width() / 2; 9125 } 9126 // FIXME the divisor should be retrieved from somewhere 9127 return viewToContentX(width); 9128 } 9129 9130 private int getScaledMaxYScroll() { 9131 int height; 9132 if (mHeightCanMeasure == false) { 9133 height = getViewHeight() / 4; 9134 } else { 9135 Rect visRect = new Rect(); 9136 calcOurVisibleRect(visRect); 9137 height = visRect.height() / 2; 9138 } 9139 // FIXME the divisor should be retrieved from somewhere 9140 // the closest thing today is hard-coded into ScrollView.java 9141 // (from ScrollView.java, line 363) int maxJump = height/2; 9142 return Math.round(height * mZoomManager.getInvScale()); 9143 } 9144 9145 /** 9146 * Called by JNI to invalidate view 9147 */ 9148 private void viewInvalidate() { 9149 invalidate(); 9150 } 9151 9152 /** 9153 * Pass the key directly to the page. This assumes that 9154 * nativePageShouldHandleShiftAndArrows() returned true. 9155 */ 9156 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9157 int keyEventAction; 9158 int eventHubAction; 9159 if (down) { 9160 keyEventAction = KeyEvent.ACTION_DOWN; 9161 eventHubAction = EventHub.KEY_DOWN; 9162 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9163 } else { 9164 keyEventAction = KeyEvent.ACTION_UP; 9165 eventHubAction = EventHub.KEY_UP; 9166 } 9167 9168 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9169 1, (metaState & KeyEvent.META_SHIFT_ON) 9170 | (metaState & KeyEvent.META_ALT_ON) 9171 | (metaState & KeyEvent.META_SYM_ON) 9172 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9173 mWebViewCore.sendMessage(eventHubAction, event); 9174 } 9175 9176 // return true if the key was handled 9177 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9178 long time) { 9179 if (mNativeClass == 0) { 9180 return false; 9181 } 9182 mInitialHitTestResult = null; 9183 mLastCursorTime = time; 9184 mLastCursorBounds = nativeGetCursorRingBounds(); 9185 boolean keyHandled 9186 = nativeMoveCursor(keyCode, count, noScroll) == false; 9187 if (DebugFlags.WEB_VIEW) { 9188 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9189 + " mLastCursorTime=" + mLastCursorTime 9190 + " handled=" + keyHandled); 9191 } 9192 if (keyHandled == false) { 9193 return keyHandled; 9194 } 9195 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9196 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9197 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9198 // set last touch so that context menu related functions will work 9199 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9200 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9201 if (mHeightCanMeasure == false) { 9202 return keyHandled; 9203 } 9204 Rect visRect = new Rect(); 9205 calcOurVisibleRect(visRect); 9206 Rect outset = new Rect(visRect); 9207 int maxXScroll = visRect.width() / 2; 9208 int maxYScroll = visRect.height() / 2; 9209 outset.inset(-maxXScroll, -maxYScroll); 9210 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9211 return keyHandled; 9212 } 9213 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9214 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9215 maxXScroll); 9216 if (maxH > 0) { 9217 pinScrollBy(maxH, 0, true, 0); 9218 } else { 9219 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9220 -maxXScroll); 9221 if (maxH < 0) { 9222 pinScrollBy(maxH, 0, true, 0); 9223 } 9224 } 9225 if (mLastCursorBounds.isEmpty()) return keyHandled; 9226 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9227 return keyHandled; 9228 } 9229 if (DebugFlags.WEB_VIEW) { 9230 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9231 + contentCursorRingBounds); 9232 } 9233 requestRectangleOnScreen(viewCursorRingBounds); 9234 return keyHandled; 9235 } 9236 9237 /** 9238 * @return Whether accessibility script has been injected. 9239 */ 9240 private boolean accessibilityScriptInjected() { 9241 // TODO: Maybe the injected script should announce its presence in 9242 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9243 // will check that as one of the conditions it looks for 9244 return mAccessibilityScriptInjected; 9245 } 9246 9247 /** 9248 * Set the background color. It's white by default. Pass 9249 * zero to make the view transparent. 9250 * @param color the ARGB color described by Color.java 9251 */ 9252 @Override 9253 public void setBackgroundColor(int color) { 9254 mBackgroundColor = color; 9255 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9256 } 9257 9258 /** 9259 * @deprecated This method is now obsolete. 9260 */ 9261 @Deprecated 9262 public void debugDump() { 9263 checkThread(); 9264 nativeDebugDump(); 9265 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9266 } 9267 9268 /** 9269 * Draw the HTML page into the specified canvas. This call ignores any 9270 * view-specific zoom, scroll offset, or other changes. It does not draw 9271 * any view-specific chrome, such as progress or URL bars. 9272 * 9273 * @hide only needs to be accessible to Browser and testing 9274 */ 9275 public void drawPage(Canvas canvas) { 9276 nativeDraw(canvas, 0, 0, false); 9277 } 9278 9279 /** 9280 * Enable the communication b/t the webView and VideoViewProxy 9281 * 9282 * @hide only used by the Browser 9283 */ 9284 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9285 mHTML5VideoViewProxy = proxy; 9286 } 9287 9288 /** 9289 * Set the time to wait between passing touches to WebCore. See also the 9290 * TOUCH_SENT_INTERVAL member for further discussion. 9291 * 9292 * @hide This is only used by the DRT test application. 9293 */ 9294 public void setTouchInterval(int interval) { 9295 mCurrentTouchInterval = interval; 9296 } 9297 9298 /** 9299 * Update our cache with updatedText. 9300 * @param updatedText The new text to put in our cache. 9301 * @hide 9302 */ 9303 protected void updateCachedTextfield(String updatedText) { 9304 // Also place our generation number so that when we look at the cache 9305 // we recognize that it is up to date. 9306 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9307 } 9308 9309 /*package*/ void autoFillForm(int autoFillQueryId) { 9310 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9311 } 9312 9313 /* package */ ViewManager getViewManager() { 9314 return mViewManager; 9315 } 9316 9317 private static void checkThread() { 9318 if (Looper.myLooper() != Looper.getMainLooper()) { 9319 Throwable throwable = new Throwable( 9320 "Warning: A WebView method was called on thread '" + 9321 Thread.currentThread().getName() + "'. " + 9322 "All WebView methods must be called on the UI thread. " + 9323 "Future versions of WebView may not support use on other threads."); 9324 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9325 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9326 } 9327 } 9328 9329 /** @hide send content invalidate */ 9330 protected void contentInvalidateAll() { 9331 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9332 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9333 } 9334 } 9335 9336 /** @hide call pageSwapCallback upon next page swap */ 9337 protected void registerPageSwapCallback() { 9338 nativeRegisterPageSwapCallback(); 9339 } 9340 9341 /** 9342 * Begin collecting per-tile profiling data 9343 * 9344 * @hide only used by profiling tests 9345 */ 9346 public void tileProfilingStart() { 9347 nativeTileProfilingStart(); 9348 } 9349 /** 9350 * Return per-tile profiling data 9351 * 9352 * @hide only used by profiling tests 9353 */ 9354 public float tileProfilingStop() { 9355 return nativeTileProfilingStop(); 9356 } 9357 9358 /** @hide only used by profiling tests */ 9359 public void tileProfilingClear() { 9360 nativeTileProfilingClear(); 9361 } 9362 /** @hide only used by profiling tests */ 9363 public int tileProfilingNumFrames() { 9364 return nativeTileProfilingNumFrames(); 9365 } 9366 /** @hide only used by profiling tests */ 9367 public int tileProfilingNumTilesInFrame(int frame) { 9368 return nativeTileProfilingNumTilesInFrame(frame); 9369 } 9370 /** @hide only used by profiling tests */ 9371 public int tileProfilingGetInt(int frame, int tile, String key) { 9372 return nativeTileProfilingGetInt(frame, tile, key); 9373 } 9374 /** @hide only used by profiling tests */ 9375 public float tileProfilingGetFloat(int frame, int tile, String key) { 9376 return nativeTileProfilingGetFloat(frame, tile, key); 9377 } 9378 9379 /** 9380 * Helper method to deal with differences between hardware and software rendering 9381 */ 9382 private void recordButtons(Canvas canvas, boolean focus, boolean pressed, 9383 boolean inval) { 9384 boolean isHardwareAccel = canvas != null 9385 ? canvas.isHardwareAccelerated() 9386 : isHardwareAccelerated(); 9387 if (isHardwareAccel) { 9388 // We never want to change button state if we are hardware accelerated, 9389 // but we DO want to invalidate as necessary so that the GL ring 9390 // can be drawn 9391 nativeRecordButtons(false, false, inval); 9392 } else { 9393 nativeRecordButtons(focus, pressed, inval); 9394 } 9395 } 9396 9397 private native int nativeCacheHitFramePointer(); 9398 private native boolean nativeCacheHitIsPlugin(); 9399 private native Rect nativeCacheHitNodeBounds(); 9400 private native int nativeCacheHitNodePointer(); 9401 /* package */ native void nativeClearCursor(); 9402 private native void nativeCreate(int ptr, String drawableDir); 9403 private native int nativeCursorFramePointer(); 9404 private native Rect nativeCursorNodeBounds(); 9405 private native int nativeCursorNodePointer(); 9406 private native boolean nativeCursorIntersects(Rect visibleRect); 9407 private native boolean nativeCursorIsAnchor(); 9408 private native boolean nativeCursorIsTextInput(); 9409 private native Point nativeCursorPosition(); 9410 private native String nativeCursorText(); 9411 /** 9412 * Returns true if the native cursor node says it wants to handle key events 9413 * (ala plugins). This can only be called if mNativeClass is non-zero! 9414 */ 9415 private native boolean nativeCursorWantsKeyEvents(); 9416 private native void nativeDebugDump(); 9417 private native void nativeDestroy(); 9418 9419 /** 9420 * Draw the picture set with a background color and extra. If 9421 * "splitIfNeeded" is true and the return value is not 0, the return value 9422 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9423 * native allocation can be freed. 9424 */ 9425 private native int nativeDraw(Canvas canvas, int color, int extra, 9426 boolean splitIfNeeded); 9427 private native void nativeDumpDisplayTree(String urlOrNull); 9428 private native boolean nativeEvaluateLayersAnimations(); 9429 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 9430 float scale, int extras); 9431 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 9432 private native void nativeExtendSelection(int x, int y); 9433 private native int nativeFindAll(String findLower, String findUpper, 9434 boolean sameAsLastSearch); 9435 private native void nativeFindNext(boolean forward); 9436 /* package */ native int nativeFocusCandidateFramePointer(); 9437 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9438 /* package */ native boolean nativeFocusCandidateIsPassword(); 9439 private native boolean nativeFocusCandidateIsRtlText(); 9440 private native boolean nativeFocusCandidateIsTextInput(); 9441 /* package */ native int nativeFocusCandidateMaxLength(); 9442 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9443 /* package */ native String nativeFocusCandidateName(); 9444 private native Rect nativeFocusCandidateNodeBounds(); 9445 /** 9446 * @return A Rect with left, top, right, bottom set to the corresponding 9447 * padding values in the focus candidate, if it is a textfield/textarea with 9448 * a style. Otherwise return null. This is not actually a rectangle; Rect 9449 * is being used to pass four integers. 9450 */ 9451 private native Rect nativeFocusCandidatePaddingRect(); 9452 /* package */ native int nativeFocusCandidatePointer(); 9453 private native String nativeFocusCandidateText(); 9454 /* package */ native float nativeFocusCandidateTextSize(); 9455 /* package */ native int nativeFocusCandidateLineHeight(); 9456 /** 9457 * Returns an integer corresponding to WebView.cpp::type. 9458 * See WebTextView.setType() 9459 */ 9460 private native int nativeFocusCandidateType(); 9461 private native boolean nativeFocusIsPlugin(); 9462 private native Rect nativeFocusNodeBounds(); 9463 /* package */ native int nativeFocusNodePointer(); 9464 private native Rect nativeGetCursorRingBounds(); 9465 private native String nativeGetSelection(); 9466 private native boolean nativeHasCursorNode(); 9467 private native boolean nativeHasFocusNode(); 9468 private native void nativeHideCursor(); 9469 private native boolean nativeHitSelection(int x, int y); 9470 private native String nativeImageURI(int x, int y); 9471 private native void nativeInstrumentReport(); 9472 private native Rect nativeLayerBounds(int layer); 9473 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9474 // return true if the page has been scrolled 9475 private native boolean nativeMotionUp(int x, int y, int slop); 9476 // returns false if it handled the key 9477 private native boolean nativeMoveCursor(int keyCode, int count, 9478 boolean noScroll); 9479 private native int nativeMoveGeneration(); 9480 private native void nativeMoveSelection(int x, int y); 9481 /** 9482 * @return true if the page should get the shift and arrow keys, rather 9483 * than select text/navigation. 9484 * 9485 * If the focus is a plugin, or if the focus and cursor match and are 9486 * a contentEditable element, then the page should handle these keys. 9487 */ 9488 private native boolean nativePageShouldHandleShiftAndArrows(); 9489 private native boolean nativePointInNavCache(int x, int y, int slop); 9490 // Like many other of our native methods, you must make sure that 9491 // mNativeClass is not null before calling this method. 9492 private native void nativeRecordButtons(boolean focused, 9493 boolean pressed, boolean invalidate); 9494 private native void nativeResetSelection(); 9495 private native Point nativeSelectableText(); 9496 private native void nativeSelectAll(); 9497 private native void nativeSelectBestAt(Rect rect); 9498 private native void nativeSelectAt(int x, int y); 9499 private native int nativeSelectionX(); 9500 private native int nativeSelectionY(); 9501 private native int nativeFindIndex(); 9502 private native void nativeSetExtendSelection(); 9503 private native void nativeSetFindIsEmpty(); 9504 private native void nativeSetFindIsUp(boolean isUp); 9505 private native void nativeSetHeightCanMeasure(boolean measure); 9506 private native void nativeSetBaseLayer(int layer, Region invalRegion, 9507 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9508 boolean registerPageSwapCallback); 9509 private native int nativeGetBaseLayer(); 9510 private native void nativeShowCursorTimed(); 9511 private native void nativeReplaceBaseContent(int content); 9512 private native void nativeCopyBaseContentToPicture(Picture pict); 9513 private native boolean nativeHasContent(); 9514 private native void nativeSetSelectionPointer(boolean set, 9515 float scale, int x, int y); 9516 private native boolean nativeStartSelection(int x, int y); 9517 private native void nativeStopGL(); 9518 private native Rect nativeSubtractLayers(Rect content); 9519 private native int nativeTextGeneration(); 9520 private native void nativeRegisterPageSwapCallback(); 9521 private native void nativeTileProfilingStart(); 9522 private native float nativeTileProfilingStop(); 9523 private native void nativeTileProfilingClear(); 9524 private native int nativeTileProfilingNumFrames(); 9525 private native int nativeTileProfilingNumTilesInFrame(int frame); 9526 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9527 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9528 // Never call this version except by updateCachedTextfield(String) - 9529 // we always want to pass in our generation number. 9530 private native void nativeUpdateCachedTextfield(String updatedText, 9531 int generation); 9532 private native boolean nativeWordSelection(int x, int y); 9533 // return NO_LEFTEDGE means failure. 9534 static final int NO_LEFTEDGE = -1; 9535 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9536 9537 private native void nativeUseHardwareAccelSkia(boolean enabled); 9538 9539 // Returns a pointer to the scrollable LayerAndroid at the given point. 9540 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9541 Rect scrollBounds); 9542 /** 9543 * Scroll the specified layer. 9544 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9545 * @param newX Destination x position to which to scroll. 9546 * @param newY Destination y position to which to scroll. 9547 * @return True if the layer is successfully scrolled. 9548 */ 9549 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9550 private native void nativeSetIsScrolling(boolean isScrolling); 9551 private native int nativeGetBackgroundColor(); 9552 native boolean nativeSetProperty(String key, String value); 9553 native String nativeGetProperty(String key); 9554 private native void nativeGetTextSelectionRegion(Region region); 9555 /** 9556 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9557 */ 9558 private static native void nativeOnTrimMemory(int level); 9559} 9560