WebView.java revision 68b9074a60a8b20235c1887c09eb7073d48c9902
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.AccessibilityManager; 81import android.view.inputmethod.EditorInfo; 82import android.view.inputmethod.InputConnection; 83import android.view.inputmethod.InputMethodManager; 84import android.webkit.WebTextView.AutoCompleteAdapter; 85import android.webkit.WebViewCore.DrawData; 86import android.webkit.WebViewCore.EventHub; 87import android.webkit.WebViewCore.TouchEventData; 88import android.webkit.WebViewCore.TouchHighlightData; 89import android.widget.AbsoluteLayout; 90import android.widget.Adapter; 91import android.widget.AdapterView; 92import android.widget.AdapterView.OnItemClickListener; 93import android.widget.ArrayAdapter; 94import android.widget.CheckedTextView; 95import android.widget.LinearLayout; 96import android.widget.ListView; 97import android.widget.OverScroller; 98import android.widget.Toast; 99 100import junit.framework.Assert; 101 102import java.io.File; 103import java.io.FileInputStream; 104import java.io.FileNotFoundException; 105import java.io.FileOutputStream; 106import java.io.IOException; 107import java.io.InputStream; 108import java.io.OutputStream; 109import java.net.URLDecoder; 110import java.util.ArrayList; 111import java.util.HashMap; 112import java.util.HashSet; 113import java.util.List; 114import java.util.Map; 115import java.util.Set; 116import java.util.Vector; 117import java.util.regex.Matcher; 118import java.util.regex.Pattern; 119 120/** 121 * <p>A View that displays web pages. This class is the basis upon which you 122 * can roll your own web browser or simply display some online content within your Activity. 123 * It uses the WebKit rendering engine to display 124 * web pages and includes methods to navigate forward and backward 125 * through a history, zoom in and out, perform text searches and more.</p> 126 * <p>To enable the built-in zoom, set 127 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 128 * (introduced in API version 3). 129 * <p>Note that, in order for your Activity to access the Internet and load web pages 130 * in a WebView, you must add the {@code INTERNET} permissions to your 131 * Android Manifest file:</p> 132 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 133 * 134 * <p>This must be a child of the <a 135 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 136 * element.</p> 137 * 138 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 139 * tutorial</a>.</p> 140 * 141 * <h3>Basic usage</h3> 142 * 143 * <p>By default, a WebView provides no browser-like widgets, does not 144 * enable JavaScript and web page errors are ignored. If your goal is only 145 * to display some HTML as a part of your UI, this is probably fine; 146 * the user won't need to interact with the web page beyond reading 147 * it, and the web page won't need to interact with the user. If you 148 * actually want a full-blown web browser, then you probably want to 149 * invoke the Browser application with a URL Intent rather than show it 150 * with a WebView. For example: 151 * <pre> 152 * Uri uri = Uri.parse("http://www.example.com"); 153 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 154 * startActivity(intent); 155 * </pre> 156 * <p>See {@link android.content.Intent} for more information.</p> 157 * 158 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 159 * or set the entire Activity window as a WebView during {@link 160 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 161 * <pre class="prettyprint"> 162 * WebView webview = new WebView(this); 163 * setContentView(webview); 164 * </pre> 165 * 166 * <p>Then load the desired web page:</p> 167 * <pre> 168 * // Simplest usage: note that an exception will NOT be thrown 169 * // if there is an error loading this page (see below). 170 * webview.loadUrl("http://slashdot.org/"); 171 * 172 * // OR, you can also load from an HTML string: 173 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 174 * webview.loadData(summary, "text/html", null); 175 * // ... although note that there are restrictions on what this HTML can do. 176 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 177 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 178 * </pre> 179 * 180 * <p>A WebView has several customization points where you can add your 181 * own behavior. These are:</p> 182 * 183 * <ul> 184 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 185 * This class is called when something that might impact a 186 * browser UI happens, for instance, progress updates and 187 * JavaScript alerts are sent here (see <a 188 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 189 * </li> 190 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 191 * It will be called when things happen that impact the 192 * rendering of the content, eg, errors or form submissions. You 193 * can also intercept URL loading here (via {@link 194 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 195 * shouldOverrideUrlLoading()}).</li> 196 * <li>Modifying the {@link android.webkit.WebSettings}, such as 197 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 198 * setJavaScriptEnabled()}. </li> 199 * <li>Adding JavaScript-to-Java interfaces with the {@link 200 * android.webkit.WebView#addJavascriptInterface} method. 201 * This lets you bind Java objects into the WebView so they can be 202 * controlled from the web pages JavaScript.</li> 203 * </ul> 204 * 205 * <p>Here's a more complicated example, showing error handling, 206 * settings, and progress notification:</p> 207 * 208 * <pre class="prettyprint"> 209 * // Let's display the progress in the activity title bar, like the 210 * // browser app does. 211 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 212 * 213 * webview.getSettings().setJavaScriptEnabled(true); 214 * 215 * final Activity activity = this; 216 * webview.setWebChromeClient(new WebChromeClient() { 217 * public void onProgressChanged(WebView view, int progress) { 218 * // Activities and WebViews measure progress with different scales. 219 * // The progress meter will automatically disappear when we reach 100% 220 * activity.setProgress(progress * 1000); 221 * } 222 * }); 223 * webview.setWebViewClient(new WebViewClient() { 224 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 225 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 226 * } 227 * }); 228 * 229 * webview.loadUrl("http://slashdot.org/"); 230 * </pre> 231 * 232 * <h3>Cookie and window management</h3> 233 * 234 * <p>For obvious security reasons, your application has its own 235 * cache, cookie store etc.—it does not share the Browser 236 * application's data. Cookies are managed on a separate thread, so 237 * operations like index building don't block the UI 238 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 239 * if you want to use cookies in your application. 240 * </p> 241 * 242 * <p>By default, requests by the HTML to open new windows are 243 * ignored. This is true whether they be opened by JavaScript or by 244 * the target attribute on a link. You can customize your 245 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 246 * and render them in whatever manner you want.</p> 247 * 248 * <p>The standard behavior for an Activity is to be destroyed and 249 * recreated when the device orientation or any other configuration changes. This will cause 250 * the WebView to reload the current page. If you don't want that, you 251 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 252 * changes, and then just leave the WebView alone. It'll automatically 253 * re-orient itself as appropriate. Read <a 254 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 255 * more information about how to handle configuration changes during runtime.</p> 256 * 257 * 258 * <h3>Building web pages to support different screen densities</h3> 259 * 260 * <p>The screen density of a device is based on the screen resolution. A screen with low density 261 * has fewer available pixels per inch, where a screen with high density 262 * has more — sometimes significantly more — pixels per inch. The density of a 263 * screen is important because, other things being equal, a UI element (such as a button) whose 264 * height and width are defined in terms of screen pixels will appear larger on the lower density 265 * screen and smaller on the higher density screen. 266 * For simplicity, Android collapses all actual screen densities into three generalized densities: 267 * high, medium, and low.</p> 268 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 269 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 270 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 271 * are bigger). 272 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 273 * you (as a web developer) target screens with different screen densities.</p> 274 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 275 * <ul> 276 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 277 * default scaling factor used for the current device. For example, if the value of {@code 278 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 279 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 280 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 281 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 282 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 283 * (discussed below), then you can stop this default scaling behavior.</li> 284 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 285 * densities for which this style sheet is to be used. The corresponding value should be either 286 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 287 * density, or high density screens, respectively. For example: 288 * <pre> 289 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 290 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 291 * which is the high density pixel ratio.</p> 292 * </li> 293 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 294 * this to specify the target density for which the web page is designed, using the following 295 * values: 296 * <ul> 297 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 298 * occurs.</li> 299 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 300 * as appropriate.</li> 301 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 302 * low density screens scale down. This is also the default behavior.</li> 303 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 304 * as appropriate.</li> 305 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 306 * values are 70-400).</li> 307 * </ul> 308 * <p>Here's an example meta tag to specify the target density:</p> 309 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 310 * </ul> 311 * <p>If you want to modify your web page for different densities, by using the {@code 312 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 313 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 314 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 315 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 316 * 317 * 318 */ 319@Widget 320public class WebView extends AbsoluteLayout 321 implements ViewTreeObserver.OnGlobalFocusChangeListener, 322 ViewGroup.OnHierarchyChangeListener { 323 324 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 325 public void onGlobalLayout() { 326 if (isShown()) { 327 setGLRectViewport(); 328 } 329 } 330 } 331 332 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 333 public void onScrollChanged() { 334 if (isShown()) { 335 setGLRectViewport(); 336 } 337 } 338 } 339 340 // The listener to capture global layout change event. 341 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 342 343 // The listener to capture scroll event. 344 private InnerScrollChangedListener mScrollChangedListener = null; 345 346 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 347 // the screen all-the-time. Good for profiling our drawing code 348 static private final boolean AUTO_REDRAW_HACK = false; 349 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 350 private boolean mAutoRedraw; 351 352 // Reference to the AlertDialog displayed by InvokeListBox. 353 // It's used to dismiss the dialog in destroy if not done before. 354 private AlertDialog mListBoxDialog = null; 355 356 static final String LOGTAG = "webview"; 357 358 private ZoomManager mZoomManager; 359 360 private final Rect mGLRectViewport = new Rect(); 361 private final Rect mViewRectViewport = new Rect(); 362 private boolean mGLViewportEmpty = false; 363 364 /** 365 * Transportation object for returning WebView across thread boundaries. 366 */ 367 public class WebViewTransport { 368 private WebView mWebview; 369 370 /** 371 * Set the WebView to the transportation object. 372 * @param webview The WebView to transport. 373 */ 374 public synchronized void setWebView(WebView webview) { 375 mWebview = webview; 376 } 377 378 /** 379 * Return the WebView object. 380 * @return WebView The transported WebView object. 381 */ 382 public synchronized WebView getWebView() { 383 return mWebview; 384 } 385 } 386 387 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 388 private static OnTrimMemoryListener sInstance = null; 389 390 static void init(Context c) { 391 if (sInstance == null) { 392 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 393 } 394 } 395 396 private OnTrimMemoryListener(Context c) { 397 c.registerComponentCallbacks(this); 398 } 399 400 @Override 401 public void onConfigurationChanged(Configuration newConfig) { 402 // Ignore 403 } 404 405 @Override 406 public void onLowMemory() { 407 // Ignore 408 } 409 410 @Override 411 public void onTrimMemory(int level) { 412 if (DebugFlags.WEB_VIEW) { 413 Log.d("WebView", "onTrimMemory: " + level); 414 } 415 WebView.nativeOnTrimMemory(level); 416 } 417 418 } 419 420 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 421 private final CallbackProxy mCallbackProxy; 422 423 private final WebViewDatabase mDatabase; 424 425 // SSL certificate for the main top-level page (if secure) 426 private SslCertificate mCertificate; 427 428 // Native WebView pointer that is 0 until the native object has been 429 // created. 430 private int mNativeClass; 431 // This would be final but it needs to be set to null when the WebView is 432 // destroyed. 433 private WebViewCore mWebViewCore; 434 // Handler for dispatching UI messages. 435 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 436 private WebTextView mWebTextView; 437 // Used to ignore changes to webkit text that arrives to the UI side after 438 // more key events. 439 private int mTextGeneration; 440 441 /* package */ void incrementTextGeneration() { mTextGeneration++; } 442 443 // Used by WebViewCore to create child views. 444 /* package */ final ViewManager mViewManager; 445 446 // Used to display in full screen mode 447 PluginFullScreenHolder mFullScreenHolder; 448 449 /** 450 * Position of the last touch event in pixels. 451 * Use integer to prevent loss of dragging delta calculation accuracy; 452 * which was done in float and converted to integer, and resulted in gradual 453 * and compounding touch position and view dragging mismatch. 454 */ 455 private int mLastTouchX; 456 private int mLastTouchY; 457 private int mStartTouchX; 458 private int mStartTouchY; 459 private float mAverageAngle; 460 461 /** 462 * Time of the last touch event. 463 */ 464 private long mLastTouchTime; 465 466 /** 467 * Time of the last time sending touch event to WebViewCore 468 */ 469 private long mLastSentTouchTime; 470 471 /** 472 * The minimum elapsed time before sending another ACTION_MOVE event to 473 * WebViewCore. This really should be tuned for each type of the devices. 474 * For example in Google Map api test case, it takes Dream device at least 475 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 476 * triggering the layout and drawing the picture. While the same process 477 * takes 60+ms on the current high speed device. If we make 478 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 479 * to WebViewCore queue and the real layout and draw events will be pushed 480 * to further, which slows down the refresh rate. Choose 50 to favor the 481 * current high speed devices. For Dream like devices, 100 is a better 482 * choice. Maybe make this in the buildspec later. 483 * (Update 12/14/2010: changed to 0 since current device should be able to 484 * handle the raw events and Map team voted to have the raw events too. 485 */ 486 private static final int TOUCH_SENT_INTERVAL = 0; 487 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 488 489 /** 490 * Helper class to get velocity for fling 491 */ 492 VelocityTracker mVelocityTracker; 493 private int mMaximumFling; 494 private float mLastVelocity; 495 private float mLastVelX; 496 private float mLastVelY; 497 498 // The id of the native layer being scrolled. 499 private int mScrollingLayer; 500 private Rect mScrollingLayerRect = new Rect(); 501 502 // only trigger accelerated fling if the new velocity is at least 503 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 504 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 505 506 /** 507 * Touch mode 508 */ 509 private int mTouchMode = TOUCH_DONE_MODE; 510 private static final int TOUCH_INIT_MODE = 1; 511 private static final int TOUCH_DRAG_START_MODE = 2; 512 private static final int TOUCH_DRAG_MODE = 3; 513 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 514 private static final int TOUCH_SHORTPRESS_MODE = 5; 515 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 516 private static final int TOUCH_DONE_MODE = 7; 517 private static final int TOUCH_PINCH_DRAG = 8; 518 private static final int TOUCH_DRAG_LAYER_MODE = 9; 519 520 // Whether to forward the touch events to WebCore 521 // Can only be set by WebKit via JNI. 522 private boolean mForwardTouchEvents = false; 523 524 // Whether to prevent default during touch. The initial value depends on 525 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 526 // for touch down. Otherwise UI will wait for the answer of the first 527 // confirmed move before taking over the control. 528 private static final int PREVENT_DEFAULT_NO = 0; 529 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 530 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 531 private static final int PREVENT_DEFAULT_YES = 3; 532 private static final int PREVENT_DEFAULT_IGNORE = 4; 533 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 534 535 // true when the touch movement exceeds the slop 536 private boolean mConfirmMove; 537 538 // if true, touch events will be first processed by WebCore, if prevent 539 // default is not set, the UI will continue handle them. 540 private boolean mDeferTouchProcess; 541 542 // to avoid interfering with the current touch events, track them 543 // separately. Currently no snapping or fling in the deferred process mode 544 private int mDeferTouchMode = TOUCH_DONE_MODE; 545 private float mLastDeferTouchX; 546 private float mLastDeferTouchY; 547 548 // To keep track of whether the current drag was initiated by a WebTextView, 549 // so that we know not to hide the cursor 550 boolean mDragFromTextInput; 551 552 // Whether or not to draw the cursor ring. 553 private boolean mDrawCursorRing = true; 554 555 // true if onPause has been called (and not onResume) 556 private boolean mIsPaused; 557 558 private HitTestResult mInitialHitTestResult; 559 560 /** 561 * Customizable constant 562 */ 563 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 564 private int mTouchSlopSquare; 565 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 566 private int mDoubleTapSlopSquare; 567 // pre-computed density adjusted navigation slop 568 private int mNavSlop; 569 // This should be ViewConfiguration.getTapTimeout() 570 // But system time out is 100ms, which is too short for the browser. 571 // In the browser, if it switches out of tap too soon, jump tap won't work. 572 // In addition, a double tap on a trackpad will always have a duration of 573 // 300ms, so this value must be at least that (otherwise we will timeout the 574 // first tap and convert it to a long press). 575 private static final int TAP_TIMEOUT = 300; 576 // This should be ViewConfiguration.getLongPressTimeout() 577 // But system time out is 500ms, which is too short for the browser. 578 // With a short timeout, it's difficult to treat trigger a short press. 579 private static final int LONG_PRESS_TIMEOUT = 1000; 580 // needed to avoid flinging after a pause of no movement 581 private static final int MIN_FLING_TIME = 250; 582 // draw unfiltered after drag is held without movement 583 private static final int MOTIONLESS_TIME = 100; 584 // The amount of content to overlap between two screens when going through 585 // pages with the space bar, in pixels. 586 private static final int PAGE_SCROLL_OVERLAP = 24; 587 588 /** 589 * These prevent calling requestLayout if either dimension is fixed. This 590 * depends on the layout parameters and the measure specs. 591 */ 592 boolean mWidthCanMeasure; 593 boolean mHeightCanMeasure; 594 595 // Remember the last dimensions we sent to the native side so we can avoid 596 // sending the same dimensions more than once. 597 int mLastWidthSent; 598 int mLastHeightSent; 599 // Since view height sent to webkit could be fixed to avoid relayout, this 600 // value records the last sent actual view height. 601 int mLastActualHeightSent; 602 603 private int mContentWidth; // cache of value from WebViewCore 604 private int mContentHeight; // cache of value from WebViewCore 605 606 // Need to have the separate control for horizontal and vertical scrollbar 607 // style than the View's single scrollbar style 608 private boolean mOverlayHorizontalScrollbar = true; 609 private boolean mOverlayVerticalScrollbar = false; 610 611 // our standard speed. this way small distances will be traversed in less 612 // time than large distances, but we cap the duration, so that very large 613 // distances won't take too long to get there. 614 private static final int STD_SPEED = 480; // pixels per second 615 // time for the longest scroll animation 616 private static final int MAX_DURATION = 750; // milliseconds 617 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 618 619 // Used by OverScrollGlow 620 OverScroller mScroller; 621 622 private boolean mInOverScrollMode = false; 623 private static Paint mOverScrollBackground; 624 private static Paint mOverScrollBorder; 625 626 private boolean mWrapContent; 627 private static final int MOTIONLESS_FALSE = 0; 628 private static final int MOTIONLESS_PENDING = 1; 629 private static final int MOTIONLESS_TRUE = 2; 630 private static final int MOTIONLESS_IGNORE = 3; 631 private int mHeldMotionless; 632 633 // An instance for injecting accessibility in WebViews with disabled 634 // JavaScript or ones for which no accessibility script exists 635 private AccessibilityInjector mAccessibilityInjector; 636 637 // flag indicating if accessibility script is injected so we 638 // know to handle Shift and arrows natively first 639 private boolean mAccessibilityScriptInjected; 640 641 static final boolean USE_JAVA_TEXT_SELECTION = true; 642 private Region mTextSelectionRegion = new Region(); 643 private Paint mTextSelectionPaint; 644 private Drawable mSelectHandleLeft; 645 private Drawable mSelectHandleRight; 646 647 static final boolean USE_WEBKIT_RINGS = false; 648 // the color used to highlight the touch rectangles 649 private static final int HIGHLIGHT_COLOR = 0x6633b5e5; 650 // the round corner for the highlight path 651 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 652 // the region indicating where the user touched on the screen 653 private Region mTouchHighlightRegion = new Region(); 654 // the paint for the touch highlight 655 private Paint mTouchHightlightPaint; 656 // debug only 657 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 658 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 659 private Paint mTouchCrossHairColor; 660 private int mTouchHighlightX; 661 private int mTouchHighlightY; 662 private long mTouchHighlightRequested; 663 664 // Basically this proxy is used to tell the Video to update layer tree at 665 // SetBaseLayer time and to pause when WebView paused. 666 private HTML5VideoViewProxy mHTML5VideoViewProxy; 667 668 // If we are using a set picture, don't send view updates to webkit 669 private boolean mBlockWebkitViewMessages = false; 670 671 // cached value used to determine if we need to switch drawing models 672 private boolean mHardwareAccelSkia = false; 673 674 /* 675 * Private message ids 676 */ 677 private static final int REMEMBER_PASSWORD = 1; 678 private static final int NEVER_REMEMBER_PASSWORD = 2; 679 private static final int SWITCH_TO_SHORTPRESS = 3; 680 private static final int SWITCH_TO_LONGPRESS = 4; 681 private static final int RELEASE_SINGLE_TAP = 5; 682 private static final int REQUEST_FORM_DATA = 6; 683 private static final int RESUME_WEBCORE_PRIORITY = 7; 684 private static final int DRAG_HELD_MOTIONLESS = 8; 685 private static final int AWAKEN_SCROLL_BARS = 9; 686 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 687 private static final int SCROLL_SELECT_TEXT = 11; 688 689 690 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 691 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 692 693 /* 694 * Package message ids 695 */ 696 static final int SCROLL_TO_MSG_ID = 101; 697 static final int NEW_PICTURE_MSG_ID = 105; 698 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 699 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 700 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 701 static final int UPDATE_ZOOM_RANGE = 109; 702 static final int UNHANDLED_NAV_KEY = 110; 703 static final int CLEAR_TEXT_ENTRY = 111; 704 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 705 static final int SHOW_RECT_MSG_ID = 113; 706 static final int LONG_PRESS_CENTER = 114; 707 static final int PREVENT_TOUCH_ID = 115; 708 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 709 // obj=Rect in doc coordinates 710 static final int INVAL_RECT_MSG_ID = 117; 711 static final int REQUEST_KEYBOARD = 118; 712 static final int DO_MOTION_UP = 119; 713 static final int SHOW_FULLSCREEN = 120; 714 static final int HIDE_FULLSCREEN = 121; 715 static final int DOM_FOCUS_CHANGED = 122; 716 static final int REPLACE_BASE_CONTENT = 123; 717 static final int FORM_DID_BLUR = 124; 718 static final int RETURN_LABEL = 125; 719 static final int FIND_AGAIN = 126; 720 static final int CENTER_FIT_RECT = 127; 721 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 722 static final int SET_SCROLLBAR_MODES = 129; 723 static final int SELECTION_STRING_CHANGED = 130; 724 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 725 static final int SAVE_WEBARCHIVE_FINISHED = 132; 726 727 static final int SET_AUTOFILLABLE = 133; 728 static final int AUTOFILL_COMPLETE = 134; 729 730 static final int SELECT_AT = 135; 731 static final int SCREEN_ON = 136; 732 static final int ENTER_FULLSCREEN_VIDEO = 137; 733 static final int UPDATE_SELECTION = 138; 734 735 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 736 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 737 738 static final String[] HandlerPrivateDebugString = { 739 "REMEMBER_PASSWORD", // = 1; 740 "NEVER_REMEMBER_PASSWORD", // = 2; 741 "SWITCH_TO_SHORTPRESS", // = 3; 742 "SWITCH_TO_LONGPRESS", // = 4; 743 "RELEASE_SINGLE_TAP", // = 5; 744 "REQUEST_FORM_DATA", // = 6; 745 "RESUME_WEBCORE_PRIORITY", // = 7; 746 "DRAG_HELD_MOTIONLESS", // = 8; 747 "AWAKEN_SCROLL_BARS", // = 9; 748 "PREVENT_DEFAULT_TIMEOUT", // = 10; 749 "SCROLL_SELECT_TEXT" // = 11; 750 }; 751 752 static final String[] HandlerPackageDebugString = { 753 "SCROLL_TO_MSG_ID", // = 101; 754 "102", // = 102; 755 "103", // = 103; 756 "104", // = 104; 757 "NEW_PICTURE_MSG_ID", // = 105; 758 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 759 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 760 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 761 "UPDATE_ZOOM_RANGE", // = 109; 762 "UNHANDLED_NAV_KEY", // = 110; 763 "CLEAR_TEXT_ENTRY", // = 111; 764 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 765 "SHOW_RECT_MSG_ID", // = 113; 766 "LONG_PRESS_CENTER", // = 114; 767 "PREVENT_TOUCH_ID", // = 115; 768 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 769 "INVAL_RECT_MSG_ID", // = 117; 770 "REQUEST_KEYBOARD", // = 118; 771 "DO_MOTION_UP", // = 119; 772 "SHOW_FULLSCREEN", // = 120; 773 "HIDE_FULLSCREEN", // = 121; 774 "DOM_FOCUS_CHANGED", // = 122; 775 "REPLACE_BASE_CONTENT", // = 123; 776 "FORM_DID_BLUR", // = 124; 777 "RETURN_LABEL", // = 125; 778 "FIND_AGAIN", // = 126; 779 "CENTER_FIT_RECT", // = 127; 780 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 781 "SET_SCROLLBAR_MODES", // = 129; 782 "SELECTION_STRING_CHANGED", // = 130; 783 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 784 "SAVE_WEBARCHIVE_FINISHED", // = 132; 785 "SET_AUTOFILLABLE", // = 133; 786 "AUTOFILL_COMPLETE", // = 134; 787 "SELECT_AT", // = 135; 788 "SCREEN_ON", // = 136; 789 "ENTER_FULLSCREEN_VIDEO" // = 137; 790 }; 791 792 // If the site doesn't use the viewport meta tag to specify the viewport, 793 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 794 static final int DEFAULT_VIEWPORT_WIDTH = 980; 795 796 // normally we try to fit the content to the minimum preferred width 797 // calculated by the Webkit. To avoid the bad behavior when some site's 798 // minimum preferred width keeps growing when changing the viewport width or 799 // the minimum preferred width is huge, an upper limit is needed. 800 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 801 802 // initial scale in percent. 0 means using default. 803 private int mInitialScaleInPercent = 0; 804 805 // Whether or not a scroll event should be sent to webkit. This is only set 806 // to false when restoring the scroll position. 807 private boolean mSendScrollEvent = true; 808 809 private int mSnapScrollMode = SNAP_NONE; 810 private static final int SNAP_NONE = 0; 811 private static final int SNAP_LOCK = 1; // not a separate state 812 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 813 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 814 private boolean mSnapPositive; 815 816 // keep these in sync with their counterparts in WebView.cpp 817 private static final int DRAW_EXTRAS_NONE = 0; 818 private static final int DRAW_EXTRAS_FIND = 1; 819 private static final int DRAW_EXTRAS_SELECTION = 2; 820 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 821 822 // keep this in sync with WebCore:ScrollbarMode in WebKit 823 private static final int SCROLLBAR_AUTO = 0; 824 private static final int SCROLLBAR_ALWAYSOFF = 1; 825 // as we auto fade scrollbar, this is ignored. 826 private static final int SCROLLBAR_ALWAYSON = 2; 827 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 828 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 829 830 // constants for determining script injection strategy 831 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 832 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 833 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 834 835 // the alias via which accessibility JavaScript interface is exposed 836 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 837 838 // JavaScript to inject the script chooser which will 839 // pick the right script for the current URL 840 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 841 "javascript:(function() {" + 842 " var chooser = document.createElement('script');" + 843 " chooser.type = 'text/javascript';" + 844 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 845 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 846 " })();"; 847 848 // Regular expression that matches the "axs" URL parameter. 849 // The value of 0 means the accessibility script is opted out 850 // The value of 1 means the accessibility script is already injected 851 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 852 853 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 854 private TextToSpeech mTextToSpeech; 855 856 // variable to cache the above pattern in case accessibility is enabled. 857 private Pattern mMatchAxsUrlParameterPattern; 858 859 /** 860 * Max distance to overscroll by in pixels. 861 * This how far content can be pulled beyond its normal bounds by the user. 862 */ 863 private int mOverscrollDistance; 864 865 /** 866 * Max distance to overfling by in pixels. 867 * This is how far flinged content can move beyond the end of its normal bounds. 868 */ 869 private int mOverflingDistance; 870 871 private OverScrollGlow mOverScrollGlow; 872 873 // Used to match key downs and key ups 874 private Vector<Integer> mKeysPressed; 875 876 /* package */ static boolean mLogEvent = true; 877 878 // for event log 879 private long mLastTouchUpTime = 0; 880 881 private WebViewCore.AutoFillData mAutoFillData; 882 883 private static boolean sNotificationsEnabled = true; 884 885 /** 886 * URI scheme for telephone number 887 */ 888 public static final String SCHEME_TEL = "tel:"; 889 /** 890 * URI scheme for email address 891 */ 892 public static final String SCHEME_MAILTO = "mailto:"; 893 /** 894 * URI scheme for map address 895 */ 896 public static final String SCHEME_GEO = "geo:0,0?q="; 897 898 private int mBackgroundColor = Color.WHITE; 899 900 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 901 private int mAutoScrollX = 0; 902 private int mAutoScrollY = 0; 903 private int mMinAutoScrollX = 0; 904 private int mMaxAutoScrollX = 0; 905 private int mMinAutoScrollY = 0; 906 private int mMaxAutoScrollY = 0; 907 private Rect mScrollingLayerBounds = new Rect(); 908 private boolean mSentAutoScrollMessage = false; 909 910 // used for serializing asynchronously handled touch events. 911 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 912 913 // Used to track whether picture updating was paused due to a window focus change. 914 private boolean mPictureUpdatePausedForFocusChange = false; 915 916 // Used to notify listeners of a new picture. 917 private PictureListener mPictureListener; 918 /** 919 * Interface to listen for new pictures as they change. 920 * @deprecated This interface is now obsolete. 921 */ 922 @Deprecated 923 public interface PictureListener { 924 /** 925 * Notify the listener that the picture has changed. 926 * @param view The WebView that owns the picture. 927 * @param picture The new picture. 928 * @deprecated This method is now obsolete. 929 */ 930 @Deprecated 931 public void onNewPicture(WebView view, Picture picture); 932 } 933 934 // FIXME: Want to make this public, but need to change the API file. 935 public /*static*/ class HitTestResult { 936 /** 937 * Default HitTestResult, where the target is unknown 938 */ 939 public static final int UNKNOWN_TYPE = 0; 940 /** 941 * @deprecated This type is no longer used. 942 */ 943 @Deprecated 944 public static final int ANCHOR_TYPE = 1; 945 /** 946 * HitTestResult for hitting a phone number 947 */ 948 public static final int PHONE_TYPE = 2; 949 /** 950 * HitTestResult for hitting a map address 951 */ 952 public static final int GEO_TYPE = 3; 953 /** 954 * HitTestResult for hitting an email address 955 */ 956 public static final int EMAIL_TYPE = 4; 957 /** 958 * HitTestResult for hitting an HTML::img tag 959 */ 960 public static final int IMAGE_TYPE = 5; 961 /** 962 * @deprecated This type is no longer used. 963 */ 964 @Deprecated 965 public static final int IMAGE_ANCHOR_TYPE = 6; 966 /** 967 * HitTestResult for hitting a HTML::a tag with src=http 968 */ 969 public static final int SRC_ANCHOR_TYPE = 7; 970 /** 971 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 972 */ 973 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 974 /** 975 * HitTestResult for hitting an edit text area 976 */ 977 public static final int EDIT_TEXT_TYPE = 9; 978 979 private int mType; 980 private String mExtra; 981 982 HitTestResult() { 983 mType = UNKNOWN_TYPE; 984 } 985 986 private void setType(int type) { 987 mType = type; 988 } 989 990 private void setExtra(String extra) { 991 mExtra = extra; 992 } 993 994 public int getType() { 995 return mType; 996 } 997 998 public String getExtra() { 999 return mExtra; 1000 } 1001 } 1002 1003 /** 1004 * Construct a new WebView with a Context object. 1005 * @param context A Context object used to access application assets. 1006 */ 1007 public WebView(Context context) { 1008 this(context, null); 1009 } 1010 1011 /** 1012 * Construct a new WebView with layout parameters. 1013 * @param context A Context object used to access application assets. 1014 * @param attrs An AttributeSet passed to our parent. 1015 */ 1016 public WebView(Context context, AttributeSet attrs) { 1017 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1018 } 1019 1020 /** 1021 * Construct a new WebView with layout parameters and a default style. 1022 * @param context A Context object used to access application assets. 1023 * @param attrs An AttributeSet passed to our parent. 1024 * @param defStyle The default style resource ID. 1025 */ 1026 public WebView(Context context, AttributeSet attrs, int defStyle) { 1027 this(context, attrs, defStyle, false); 1028 } 1029 1030 /** 1031 * Construct a new WebView with layout parameters and a default style. 1032 * @param context A Context object used to access application assets. 1033 * @param attrs An AttributeSet passed to our parent. 1034 * @param defStyle The default style resource ID. 1035 */ 1036 public WebView(Context context, AttributeSet attrs, int defStyle, 1037 boolean privateBrowsing) { 1038 this(context, attrs, defStyle, null, privateBrowsing); 1039 } 1040 1041 /** 1042 * Construct a new WebView with layout parameters, a default style and a set 1043 * of custom Javscript interfaces to be added to the WebView at initialization 1044 * time. This guarantees that these interfaces will be available when the JS 1045 * context is initialized. 1046 * @param context A Context object used to access application assets. 1047 * @param attrs An AttributeSet passed to our parent. 1048 * @param defStyle The default style resource ID. 1049 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1050 * object implementing those interfaces, as values. 1051 * @hide pending API council approval. 1052 */ 1053 protected WebView(Context context, AttributeSet attrs, int defStyle, 1054 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1055 super(context, attrs, defStyle); 1056 checkThread(); 1057 1058 if (context == null) { 1059 throw new IllegalArgumentException("Invalid context argument"); 1060 } 1061 1062 // Used by the chrome stack to find application paths 1063 JniUtil.setContext(context); 1064 1065 mCallbackProxy = new CallbackProxy(context, this); 1066 mViewManager = new ViewManager(this); 1067 L10nUtils.setApplicationContext(context.getApplicationContext()); 1068 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1069 mDatabase = WebViewDatabase.getInstance(context); 1070 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1071 mZoomManager = new ZoomManager(this, mCallbackProxy); 1072 1073 /* The init method must follow the creation of certain member variables, 1074 * such as the mZoomManager. 1075 */ 1076 init(); 1077 setupPackageListener(context); 1078 setupProxyListener(context); 1079 updateMultiTouchSupport(context); 1080 1081 if (privateBrowsing) { 1082 startPrivateBrowsing(); 1083 } 1084 1085 mAutoFillData = new WebViewCore.AutoFillData(); 1086 } 1087 1088 private static class ProxyReceiver extends BroadcastReceiver { 1089 @Override 1090 public void onReceive(Context context, Intent intent) { 1091 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1092 handleProxyBroadcast(intent); 1093 } 1094 } 1095 } 1096 1097 /* 1098 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1099 */ 1100 private static ProxyReceiver sProxyReceiver; 1101 1102 /* 1103 * @param context This method expects this to be a valid context 1104 */ 1105 private static synchronized void setupProxyListener(Context context) { 1106 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1107 return; 1108 } 1109 IntentFilter filter = new IntentFilter(); 1110 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1111 sProxyReceiver = new ProxyReceiver(); 1112 Intent currentProxy = context.getApplicationContext().registerReceiver( 1113 sProxyReceiver, filter); 1114 if (currentProxy != null) { 1115 handleProxyBroadcast(currentProxy); 1116 } 1117 } 1118 1119 /* 1120 * @param context This method expects this to be a valid context 1121 */ 1122 private static synchronized void disableProxyListener(Context context) { 1123 if (sProxyReceiver == null) 1124 return; 1125 1126 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1127 sProxyReceiver = null; 1128 } 1129 1130 private static void handleProxyBroadcast(Intent intent) { 1131 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1132 if (proxyProperties == null || proxyProperties.getHost() == null) { 1133 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1134 return; 1135 } 1136 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1137 } 1138 1139 /* 1140 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1141 * or ACTION_PACKAGE_REMOVED. 1142 */ 1143 private static boolean sPackageInstallationReceiverAdded = false; 1144 1145 /* 1146 * A set of Google packages we monitor for the 1147 * navigator.isApplicationInstalled() API. Add additional packages as 1148 * needed. 1149 */ 1150 private static Set<String> sGoogleApps; 1151 static { 1152 sGoogleApps = new HashSet<String>(); 1153 sGoogleApps.add("com.google.android.youtube"); 1154 } 1155 1156 private static class PackageListener extends BroadcastReceiver { 1157 @Override 1158 public void onReceive(Context context, Intent intent) { 1159 final String action = intent.getAction(); 1160 final String packageName = intent.getData().getSchemeSpecificPart(); 1161 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1162 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1163 // if it is replacing, refreshPlugins() when adding 1164 return; 1165 } 1166 1167 if (sGoogleApps.contains(packageName)) { 1168 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1169 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1170 } else { 1171 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1172 } 1173 } 1174 1175 PluginManager pm = PluginManager.getInstance(context); 1176 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1177 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1178 } 1179 } 1180 } 1181 1182 private void setupPackageListener(Context context) { 1183 1184 /* 1185 * we must synchronize the instance check and the creation of the 1186 * receiver to ensure that only ONE receiver exists for all WebView 1187 * instances. 1188 */ 1189 synchronized (WebView.class) { 1190 1191 // if the receiver already exists then we do not need to register it 1192 // again 1193 if (sPackageInstallationReceiverAdded) { 1194 return; 1195 } 1196 1197 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1198 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1199 filter.addDataScheme("package"); 1200 BroadcastReceiver packageListener = new PackageListener(); 1201 context.getApplicationContext().registerReceiver(packageListener, filter); 1202 sPackageInstallationReceiverAdded = true; 1203 } 1204 1205 // check if any of the monitored apps are already installed 1206 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1207 1208 @Override 1209 protected Set<String> doInBackground(Void... unused) { 1210 Set<String> installedPackages = new HashSet<String>(); 1211 PackageManager pm = mContext.getPackageManager(); 1212 for (String name : sGoogleApps) { 1213 try { 1214 PackageInfo pInfo = pm.getPackageInfo(name, 1215 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1216 installedPackages.add(name); 1217 } catch (PackageManager.NameNotFoundException e) { 1218 // package not found 1219 } 1220 } 1221 return installedPackages; 1222 } 1223 1224 // Executes on the UI thread 1225 @Override 1226 protected void onPostExecute(Set<String> installedPackages) { 1227 if (mWebViewCore != null) { 1228 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1229 } 1230 } 1231 }; 1232 task.execute(); 1233 } 1234 1235 void updateMultiTouchSupport(Context context) { 1236 mZoomManager.updateMultiTouchSupport(context); 1237 } 1238 1239 private void init() { 1240 OnTrimMemoryListener.init(getContext()); 1241 1242 setWillNotDraw(false); 1243 setFocusable(true); 1244 setFocusableInTouchMode(true); 1245 setClickable(true); 1246 setLongClickable(true); 1247 1248 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1249 int slop = configuration.getScaledTouchSlop(); 1250 mTouchSlopSquare = slop * slop; 1251 slop = configuration.getScaledDoubleTapSlop(); 1252 mDoubleTapSlopSquare = slop * slop; 1253 final float density = getContext().getResources().getDisplayMetrics().density; 1254 // use one line height, 16 based on our current default font, for how 1255 // far we allow a touch be away from the edge of a link 1256 mNavSlop = (int) (16 * density); 1257 mZoomManager.init(density); 1258 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1259 1260 // Compute the inverse of the density squared. 1261 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1262 1263 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1264 mOverflingDistance = configuration.getScaledOverflingDistance(); 1265 1266 setScrollBarStyle(super.getScrollBarStyle()); 1267 // Initially use a size of two, since the user is likely to only hold 1268 // down two keys at a time (shift + another key) 1269 mKeysPressed = new Vector<Integer>(2); 1270 mHTML5VideoViewProxy = null ; 1271 } 1272 1273 @Override 1274 public boolean shouldDelayChildPressedState() { 1275 return true; 1276 } 1277 1278 /** 1279 * Adds accessibility APIs to JavaScript. 1280 * 1281 * Note: This method is responsible to performing the necessary 1282 * check if the accessibility APIs should be exposed. 1283 */ 1284 private void addAccessibilityApisToJavaScript() { 1285 if (AccessibilityManager.getInstance(mContext).isEnabled() 1286 && getSettings().getJavaScriptEnabled()) { 1287 // exposing the TTS for now ... 1288 mTextToSpeech = new TextToSpeech(getContext(), null); 1289 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1290 } 1291 } 1292 1293 /** 1294 * Removes accessibility APIs from JavaScript. 1295 */ 1296 private void removeAccessibilityApisFromJavaScript() { 1297 // exposing the TTS for now ... 1298 if (mTextToSpeech != null) { 1299 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1300 mTextToSpeech.shutdown(); 1301 mTextToSpeech = null; 1302 } 1303 } 1304 1305 @Override 1306 public void setOverScrollMode(int mode) { 1307 super.setOverScrollMode(mode); 1308 if (mode != OVER_SCROLL_NEVER) { 1309 if (mOverScrollGlow == null) { 1310 mOverScrollGlow = new OverScrollGlow(this); 1311 } 1312 } else { 1313 mOverScrollGlow = null; 1314 } 1315 } 1316 1317 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1318 final float density = mContext.getResources().getDisplayMetrics().density 1319 * 100 / zoomDensity; 1320 mNavSlop = (int) (16 * density); 1321 mZoomManager.updateDefaultZoomDensity(density); 1322 } 1323 1324 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1325 String password, final Message resumeMsg) { 1326 boolean rVal = false; 1327 if (resumeMsg == null) { 1328 // null resumeMsg implies saving password silently 1329 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1330 } else { 1331 final Message remember = mPrivateHandler.obtainMessage( 1332 REMEMBER_PASSWORD); 1333 remember.getData().putString("host", schemePlusHost); 1334 remember.getData().putString("username", username); 1335 remember.getData().putString("password", password); 1336 remember.obj = resumeMsg; 1337 1338 final Message neverRemember = mPrivateHandler.obtainMessage( 1339 NEVER_REMEMBER_PASSWORD); 1340 neverRemember.getData().putString("host", schemePlusHost); 1341 neverRemember.getData().putString("username", username); 1342 neverRemember.getData().putString("password", password); 1343 neverRemember.obj = resumeMsg; 1344 1345 new AlertDialog.Builder(getContext()) 1346 .setTitle(com.android.internal.R.string.save_password_label) 1347 .setMessage(com.android.internal.R.string.save_password_message) 1348 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1349 new DialogInterface.OnClickListener() { 1350 public void onClick(DialogInterface dialog, int which) { 1351 resumeMsg.sendToTarget(); 1352 } 1353 }) 1354 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1355 new DialogInterface.OnClickListener() { 1356 public void onClick(DialogInterface dialog, int which) { 1357 remember.sendToTarget(); 1358 } 1359 }) 1360 .setNegativeButton(com.android.internal.R.string.save_password_never, 1361 new DialogInterface.OnClickListener() { 1362 public void onClick(DialogInterface dialog, int which) { 1363 neverRemember.sendToTarget(); 1364 } 1365 }) 1366 .setOnCancelListener(new OnCancelListener() { 1367 public void onCancel(DialogInterface dialog) { 1368 resumeMsg.sendToTarget(); 1369 } 1370 }).show(); 1371 // Return true so that WebViewCore will pause while the dialog is 1372 // up. 1373 rVal = true; 1374 } 1375 return rVal; 1376 } 1377 1378 @Override 1379 public void setScrollBarStyle(int style) { 1380 if (style == View.SCROLLBARS_INSIDE_INSET 1381 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1382 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1383 } else { 1384 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1385 } 1386 super.setScrollBarStyle(style); 1387 } 1388 1389 /** 1390 * Specify whether the horizontal scrollbar has overlay style. 1391 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1392 */ 1393 public void setHorizontalScrollbarOverlay(boolean overlay) { 1394 checkThread(); 1395 mOverlayHorizontalScrollbar = overlay; 1396 } 1397 1398 /** 1399 * Specify whether the vertical scrollbar has overlay style. 1400 * @param overlay TRUE if vertical scrollbar should have overlay style. 1401 */ 1402 public void setVerticalScrollbarOverlay(boolean overlay) { 1403 checkThread(); 1404 mOverlayVerticalScrollbar = overlay; 1405 } 1406 1407 /** 1408 * Return whether horizontal scrollbar has overlay style 1409 * @return TRUE if horizontal scrollbar has overlay style. 1410 */ 1411 public boolean overlayHorizontalScrollbar() { 1412 checkThread(); 1413 return mOverlayHorizontalScrollbar; 1414 } 1415 1416 /** 1417 * Return whether vertical scrollbar has overlay style 1418 * @return TRUE if vertical scrollbar has overlay style. 1419 */ 1420 public boolean overlayVerticalScrollbar() { 1421 checkThread(); 1422 return mOverlayVerticalScrollbar; 1423 } 1424 1425 /* 1426 * Return the width of the view where the content of WebView should render 1427 * to. 1428 * Note: this can be called from WebCoreThread. 1429 */ 1430 /* package */ int getViewWidth() { 1431 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1432 return getWidth(); 1433 } else { 1434 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1435 } 1436 } 1437 1438 /** 1439 * returns the height of the titlebarview (if any). Does not care about 1440 * scrolling 1441 * @hide 1442 */ 1443 protected int getTitleHeight() { 1444 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1445 } 1446 1447 /** 1448 * Return the amount of the titlebarview (if any) that is visible 1449 * 1450 * @deprecated This method is now obsolete. 1451 */ 1452 public int getVisibleTitleHeight() { 1453 checkThread(); 1454 return getVisibleTitleHeightImpl(); 1455 } 1456 1457 private int getVisibleTitleHeightImpl() { 1458 // need to restrict mScrollY due to over scroll 1459 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1460 } 1461 1462 /* 1463 * Return the height of the view where the content of WebView should render 1464 * to. Note that this excludes mTitleBar, if there is one. 1465 * Note: this can be called from WebCoreThread. 1466 */ 1467 /* package */ int getViewHeight() { 1468 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1469 } 1470 1471 int getViewHeightWithTitle() { 1472 int height = getHeight(); 1473 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1474 height -= getHorizontalScrollbarHeight(); 1475 } 1476 return height; 1477 } 1478 1479 /** 1480 * @return The SSL certificate for the main top-level page or null if 1481 * there is no certificate (the site is not secure). 1482 */ 1483 public SslCertificate getCertificate() { 1484 checkThread(); 1485 return mCertificate; 1486 } 1487 1488 /** 1489 * Sets the SSL certificate for the main top-level page. 1490 */ 1491 public void setCertificate(SslCertificate certificate) { 1492 checkThread(); 1493 if (DebugFlags.WEB_VIEW) { 1494 Log.v(LOGTAG, "setCertificate=" + certificate); 1495 } 1496 // here, the certificate can be null (if the site is not secure) 1497 mCertificate = certificate; 1498 } 1499 1500 //------------------------------------------------------------------------- 1501 // Methods called by activity 1502 //------------------------------------------------------------------------- 1503 1504 /** 1505 * Save the username and password for a particular host in the WebView's 1506 * internal database. 1507 * @param host The host that required the credentials. 1508 * @param username The username for the given host. 1509 * @param password The password for the given host. 1510 */ 1511 public void savePassword(String host, String username, String password) { 1512 checkThread(); 1513 mDatabase.setUsernamePassword(host, username, password); 1514 } 1515 1516 /** 1517 * Set the HTTP authentication credentials for a given host and realm. 1518 * 1519 * @param host The host for the credentials. 1520 * @param realm The realm for the credentials. 1521 * @param username The username for the password. If it is null, it means 1522 * password can't be saved. 1523 * @param password The password 1524 */ 1525 public void setHttpAuthUsernamePassword(String host, String realm, 1526 String username, String password) { 1527 checkThread(); 1528 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1529 } 1530 1531 /** 1532 * Retrieve the HTTP authentication username and password for a given 1533 * host & realm pair 1534 * 1535 * @param host The host for which the credentials apply. 1536 * @param realm The realm for which the credentials apply. 1537 * @return String[] if found, String[0] is username, which can be null and 1538 * String[1] is password. Return null if it can't find anything. 1539 */ 1540 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1541 checkThread(); 1542 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1543 } 1544 1545 /** 1546 * Remove Find or Select ActionModes, if active. 1547 */ 1548 private void clearActionModes() { 1549 if (mSelectCallback != null) { 1550 mSelectCallback.finish(); 1551 } 1552 if (mFindCallback != null) { 1553 mFindCallback.finish(); 1554 } 1555 } 1556 1557 /** 1558 * Called to clear state when moving from one page to another, or changing 1559 * in some other way that makes elements associated with the current page 1560 * (such as WebTextView or ActionModes) no longer relevant. 1561 */ 1562 private void clearHelpers() { 1563 clearTextEntry(); 1564 clearActionModes(); 1565 dismissFullScreenMode(); 1566 } 1567 1568 /** 1569 * Destroy the internal state of the WebView. This method should be called 1570 * after the WebView has been removed from the view system. No other 1571 * methods may be called on a WebView after destroy. 1572 */ 1573 public void destroy() { 1574 checkThread(); 1575 destroyImpl(); 1576 } 1577 1578 private void destroyImpl() { 1579 clearHelpers(); 1580 if (mListBoxDialog != null) { 1581 mListBoxDialog.dismiss(); 1582 mListBoxDialog = null; 1583 } 1584 // remove so that it doesn't cause events 1585 if (mWebTextView != null) { 1586 mWebTextView.remove(); 1587 mWebTextView = null; 1588 } 1589 if (mNativeClass != 0) nativeStopGL(); 1590 if (mWebViewCore != null) { 1591 // Set the handlers to null before destroying WebViewCore so no 1592 // more messages will be posted. 1593 mCallbackProxy.setWebViewClient(null); 1594 mCallbackProxy.setWebChromeClient(null); 1595 // Tell WebViewCore to destroy itself 1596 synchronized (this) { 1597 WebViewCore webViewCore = mWebViewCore; 1598 mWebViewCore = null; // prevent using partial webViewCore 1599 webViewCore.destroy(); 1600 } 1601 // Remove any pending messages that might not be serviced yet. 1602 mPrivateHandler.removeCallbacksAndMessages(null); 1603 mCallbackProxy.removeCallbacksAndMessages(null); 1604 // Wake up the WebCore thread just in case it is waiting for a 1605 // JavaScript dialog. 1606 synchronized (mCallbackProxy) { 1607 mCallbackProxy.notify(); 1608 } 1609 } 1610 if (mNativeClass != 0) { 1611 nativeDestroy(); 1612 mNativeClass = 0; 1613 } 1614 } 1615 1616 /** 1617 * Enables platform notifications of data state and proxy changes. 1618 * Notifications are enabled by default. 1619 * 1620 * @deprecated This method is now obsolete. 1621 */ 1622 @Deprecated 1623 public static void enablePlatformNotifications() { 1624 checkThread(); 1625 synchronized (WebView.class) { 1626 Network.enablePlatformNotifications(); 1627 sNotificationsEnabled = true; 1628 Context context = JniUtil.getContext(); 1629 if (context != null) 1630 setupProxyListener(context); 1631 } 1632 } 1633 1634 /** 1635 * Disables platform notifications of data state and proxy changes. 1636 * Notifications are enabled by default. 1637 * 1638 * @deprecated This method is now obsolete. 1639 */ 1640 @Deprecated 1641 public static void disablePlatformNotifications() { 1642 checkThread(); 1643 synchronized (WebView.class) { 1644 Network.disablePlatformNotifications(); 1645 sNotificationsEnabled = false; 1646 Context context = JniUtil.getContext(); 1647 if (context != null) 1648 disableProxyListener(context); 1649 } 1650 } 1651 1652 /** 1653 * Sets JavaScript engine flags. 1654 * 1655 * @param flags JS engine flags in a String 1656 * 1657 * @hide pending API solidification 1658 */ 1659 public void setJsFlags(String flags) { 1660 checkThread(); 1661 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1662 } 1663 1664 /** 1665 * Inform WebView of the network state. This is used to set 1666 * the JavaScript property window.navigator.isOnline and 1667 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1668 * @param networkUp boolean indicating if network is available 1669 */ 1670 public void setNetworkAvailable(boolean networkUp) { 1671 checkThread(); 1672 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1673 networkUp ? 1 : 0, 0); 1674 } 1675 1676 /** 1677 * Inform WebView about the current network type. 1678 * {@hide} 1679 */ 1680 public void setNetworkType(String type, String subtype) { 1681 checkThread(); 1682 Map<String, String> map = new HashMap<String, String>(); 1683 map.put("type", type); 1684 map.put("subtype", subtype); 1685 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1686 } 1687 /** 1688 * Save the state of this WebView used in 1689 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1690 * method no longer stores the display data for this WebView. The previous 1691 * behavior could potentially leak files if {@link #restoreState} was never 1692 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1693 * and restoring the display data. 1694 * @param outState The Bundle to store the WebView state. 1695 * @return The same copy of the back/forward list used to save the state. If 1696 * saveState fails, the returned list will be null. 1697 * @see #savePicture 1698 * @see #restorePicture 1699 */ 1700 public WebBackForwardList saveState(Bundle outState) { 1701 checkThread(); 1702 if (outState == null) { 1703 return null; 1704 } 1705 // We grab a copy of the back/forward list because a client of WebView 1706 // may have invalidated the history list by calling clearHistory. 1707 WebBackForwardList list = copyBackForwardList(); 1708 final int currentIndex = list.getCurrentIndex(); 1709 final int size = list.getSize(); 1710 // We should fail saving the state if the list is empty or the index is 1711 // not in a valid range. 1712 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1713 return null; 1714 } 1715 outState.putInt("index", currentIndex); 1716 // FIXME: This should just be a byte[][] instead of ArrayList but 1717 // Parcel.java does not have the code to handle multi-dimensional 1718 // arrays. 1719 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1720 for (int i = 0; i < size; i++) { 1721 WebHistoryItem item = list.getItemAtIndex(i); 1722 if (null == item) { 1723 // FIXME: this shouldn't happen 1724 // need to determine how item got set to null 1725 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1726 return null; 1727 } 1728 byte[] data = item.getFlattenedData(); 1729 if (data == null) { 1730 // It would be very odd to not have any data for a given history 1731 // item. And we will fail to rebuild the history list without 1732 // flattened data. 1733 return null; 1734 } 1735 history.add(data); 1736 } 1737 outState.putSerializable("history", history); 1738 if (mCertificate != null) { 1739 outState.putBundle("certificate", 1740 SslCertificate.saveState(mCertificate)); 1741 } 1742 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1743 mZoomManager.saveZoomState(outState); 1744 return list; 1745 } 1746 1747 /** 1748 * Save the current display data to the Bundle given. Used in conjunction 1749 * with {@link #saveState}. 1750 * @param b A Bundle to store the display data. 1751 * @param dest The file to store the serialized picture data. Will be 1752 * overwritten with this WebView's picture data. 1753 * @return True if the picture was successfully saved. 1754 * @deprecated This method is now obsolete. 1755 */ 1756 @Deprecated 1757 public boolean savePicture(Bundle b, final File dest) { 1758 checkThread(); 1759 if (dest == null || b == null) { 1760 return false; 1761 } 1762 final Picture p = capturePicture(); 1763 // Use a temporary file while writing to ensure the destination file 1764 // contains valid data. 1765 final File temp = new File(dest.getPath() + ".writing"); 1766 new Thread(new Runnable() { 1767 public void run() { 1768 FileOutputStream out = null; 1769 try { 1770 out = new FileOutputStream(temp); 1771 p.writeToStream(out); 1772 // Writing the picture succeeded, rename the temporary file 1773 // to the destination. 1774 temp.renameTo(dest); 1775 } catch (Exception e) { 1776 // too late to do anything about it. 1777 } finally { 1778 if (out != null) { 1779 try { 1780 out.close(); 1781 } catch (Exception e) { 1782 // Can't do anything about that 1783 } 1784 } 1785 temp.delete(); 1786 } 1787 } 1788 }).start(); 1789 // now update the bundle 1790 b.putInt("scrollX", mScrollX); 1791 b.putInt("scrollY", mScrollY); 1792 mZoomManager.saveZoomState(b); 1793 return true; 1794 } 1795 1796 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1797 int sx = b.getInt("scrollX", 0); 1798 int sy = b.getInt("scrollY", 0); 1799 1800 mDrawHistory = true; 1801 mHistoryPicture = p; 1802 1803 mScrollX = sx; 1804 mScrollY = sy; 1805 mZoomManager.restoreZoomState(b); 1806 final float scale = mZoomManager.getScale(); 1807 mHistoryWidth = Math.round(p.getWidth() * scale); 1808 mHistoryHeight = Math.round(p.getHeight() * scale); 1809 1810 invalidate(); 1811 } 1812 1813 /** 1814 * Restore the display data that was save in {@link #savePicture}. Used in 1815 * conjunction with {@link #restoreState}. 1816 * 1817 * Note that this will not work if the WebView is hardware accelerated. 1818 * @param b A Bundle containing the saved display data. 1819 * @param src The file where the picture data was stored. 1820 * @return True if the picture was successfully restored. 1821 * @deprecated This method is now obsolete. 1822 */ 1823 @Deprecated 1824 public boolean restorePicture(Bundle b, File src) { 1825 checkThread(); 1826 if (src == null || b == null) { 1827 return false; 1828 } 1829 if (!src.exists()) { 1830 return false; 1831 } 1832 try { 1833 final FileInputStream in = new FileInputStream(src); 1834 final Bundle copy = new Bundle(b); 1835 new Thread(new Runnable() { 1836 public void run() { 1837 try { 1838 final Picture p = Picture.createFromStream(in); 1839 if (p != null) { 1840 // Post a runnable on the main thread to update the 1841 // history picture fields. 1842 mPrivateHandler.post(new Runnable() { 1843 public void run() { 1844 restoreHistoryPictureFields(p, copy); 1845 } 1846 }); 1847 } 1848 } finally { 1849 try { 1850 in.close(); 1851 } catch (Exception e) { 1852 // Nothing we can do now. 1853 } 1854 } 1855 } 1856 }).start(); 1857 } catch (FileNotFoundException e){ 1858 e.printStackTrace(); 1859 } 1860 return true; 1861 } 1862 1863 /** 1864 * Saves the view data to the output stream. The output is highly 1865 * version specific, and may not be able to be loaded by newer versions 1866 * of WebView. 1867 * @param stream The {@link OutputStream} to save to 1868 * @return True if saved successfully 1869 * @hide 1870 */ 1871 public boolean saveViewState(OutputStream stream) { 1872 try { 1873 return ViewStateSerializer.serializeViewState(stream, this); 1874 } catch (IOException e) { 1875 Log.w(LOGTAG, "Failed to saveViewState", e); 1876 } 1877 return false; 1878 } 1879 1880 /** 1881 * Loads the view data from the input stream. See 1882 * {@link #saveViewState(OutputStream)} for more information. 1883 * @param stream The {@link InputStream} to load from 1884 * @return True if loaded successfully 1885 * @hide 1886 */ 1887 public boolean loadViewState(InputStream stream) { 1888 try { 1889 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1890 mBlockWebkitViewMessages = true; 1891 setNewPicture(mLoadedPicture, true); 1892 return true; 1893 } catch (IOException e) { 1894 Log.w(LOGTAG, "Failed to loadViewState", e); 1895 } 1896 return false; 1897 } 1898 1899 /** 1900 * Clears the view state set with {@link #loadViewState(InputStream)}. 1901 * This WebView will then switch to showing the content from webkit 1902 * @hide 1903 */ 1904 public void clearViewState() { 1905 mBlockWebkitViewMessages = false; 1906 mLoadedPicture = null; 1907 invalidate(); 1908 } 1909 1910 /** 1911 * Restore the state of this WebView from the given map used in 1912 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1913 * be called to restore the state of the WebView before using the object. If 1914 * it is called after the WebView has had a chance to build state (load 1915 * pages, create a back/forward list, etc.) there may be undesirable 1916 * side-effects. Please note that this method no longer restores the 1917 * display data for this WebView. See {@link #savePicture} and {@link 1918 * #restorePicture} for saving and restoring the display data. 1919 * @param inState The incoming Bundle of state. 1920 * @return The restored back/forward list or null if restoreState failed. 1921 * @see #savePicture 1922 * @see #restorePicture 1923 */ 1924 public WebBackForwardList restoreState(Bundle inState) { 1925 checkThread(); 1926 WebBackForwardList returnList = null; 1927 if (inState == null) { 1928 return returnList; 1929 } 1930 if (inState.containsKey("index") && inState.containsKey("history")) { 1931 mCertificate = SslCertificate.restoreState( 1932 inState.getBundle("certificate")); 1933 1934 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1935 final int index = inState.getInt("index"); 1936 // We can't use a clone of the list because we need to modify the 1937 // shared copy, so synchronize instead to prevent concurrent 1938 // modifications. 1939 synchronized (list) { 1940 final List<byte[]> history = 1941 (List<byte[]>) inState.getSerializable("history"); 1942 final int size = history.size(); 1943 // Check the index bounds so we don't crash in native code while 1944 // restoring the history index. 1945 if (index < 0 || index >= size) { 1946 return null; 1947 } 1948 for (int i = 0; i < size; i++) { 1949 byte[] data = history.remove(0); 1950 if (data == null) { 1951 // If we somehow have null data, we cannot reconstruct 1952 // the item and thus our history list cannot be rebuilt. 1953 return null; 1954 } 1955 WebHistoryItem item = new WebHistoryItem(data); 1956 list.addHistoryItem(item); 1957 } 1958 // Grab the most recent copy to return to the caller. 1959 returnList = copyBackForwardList(); 1960 // Update the copy to have the correct index. 1961 returnList.setCurrentIndex(index); 1962 } 1963 // Restore private browsing setting. 1964 if (inState.getBoolean("privateBrowsingEnabled")) { 1965 getSettings().setPrivateBrowsingEnabled(true); 1966 } 1967 mZoomManager.restoreZoomState(inState); 1968 // Remove all pending messages because we are restoring previous 1969 // state. 1970 mWebViewCore.removeMessages(); 1971 // Send a restore state message. 1972 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1973 } 1974 return returnList; 1975 } 1976 1977 /** 1978 * Load the given url with the extra headers. 1979 * @param url The url of the resource to load. 1980 * @param extraHeaders The extra headers sent with this url. This should not 1981 * include the common headers like "user-agent". If it does, it 1982 * will be replaced by the intrinsic value of the WebView. 1983 */ 1984 public void loadUrl(String url, Map<String, String> extraHeaders) { 1985 checkThread(); 1986 loadUrlImpl(url, extraHeaders); 1987 } 1988 1989 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 1990 switchOutDrawHistory(); 1991 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1992 arg.mUrl = url; 1993 arg.mExtraHeaders = extraHeaders; 1994 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1995 clearHelpers(); 1996 } 1997 1998 /** 1999 * Load the given url. 2000 * @param url The url of the resource to load. 2001 */ 2002 public void loadUrl(String url) { 2003 checkThread(); 2004 loadUrlImpl(url); 2005 } 2006 2007 private void loadUrlImpl(String url) { 2008 if (url == null) { 2009 return; 2010 } 2011 loadUrlImpl(url, null); 2012 } 2013 2014 /** 2015 * Load the url with postData using "POST" method into the WebView. If url 2016 * is not a network url, it will be loaded with {link 2017 * {@link #loadUrl(String)} instead. 2018 * 2019 * @param url The url of the resource to load. 2020 * @param postData The data will be passed to "POST" request. 2021 */ 2022 public void postUrl(String url, byte[] postData) { 2023 checkThread(); 2024 if (URLUtil.isNetworkUrl(url)) { 2025 switchOutDrawHistory(); 2026 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2027 arg.mUrl = url; 2028 arg.mPostData = postData; 2029 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2030 clearHelpers(); 2031 } else { 2032 loadUrlImpl(url); 2033 } 2034 } 2035 2036 /** 2037 * Load the given data into the WebView using a 'data' scheme URL. 2038 * <p> 2039 * Note that JavaScript's same origin policy means that script running in a 2040 * page loaded using this method will be unable to access content loaded 2041 * using any scheme other than 'data', including 'http(s)'. To avoid this 2042 * restriction, use {@link 2043 * #loadDataWithBaseURL(String,String,String,String,String) 2044 * loadDataWithBaseURL()} with an appropriate base URL. 2045 * <p> 2046 * If the value of the encoding parameter is 'base64', then the data must 2047 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2048 * octets inside the range of safe URL characters and use the standard %xx 2049 * hex encoding of URLs for octets outside that range. 2050 * @param data A String of data in the given encoding. 2051 * @param mimeType The MIMEType of the data, e.g. 'text/html'. 2052 * @param encoding The encoding of the data. 2053 */ 2054 public void loadData(String data, String mimeType, String encoding) { 2055 checkThread(); 2056 loadDataImpl(data, mimeType, encoding); 2057 } 2058 2059 private void loadDataImpl(String data, String mimeType, String encoding) { 2060 StringBuilder dataUrl = new StringBuilder("data:"); 2061 dataUrl.append(mimeType); 2062 if ("base64".equals(encoding)) { 2063 dataUrl.append(";base64"); 2064 } 2065 dataUrl.append(","); 2066 dataUrl.append(data); 2067 loadUrlImpl(dataUrl.toString()); 2068 } 2069 2070 /** 2071 * Load the given data into the WebView, using baseUrl as the base URL for 2072 * the content. The base URL is used both to resolve relative URLs and when 2073 * applying JavaScript's same origin policy. The historyUrl is used for the 2074 * history entry. 2075 * <p> 2076 * Note that content specified in this way can access local device files 2077 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2078 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2079 * <p> 2080 * If the base URL uses the data scheme, this method is equivalent to 2081 * calling {@link #loadData(String,String,String) loadData()} and the 2082 * historyUrl is ignored. 2083 * @param baseUrl URL to use as the page's base URL. If null defaults to 2084 * 'about:blank' 2085 * @param data A String of data in the given encoding. 2086 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2087 * defaults to 'text/html'. 2088 * @param encoding The encoding of the data. 2089 * @param historyUrl URL to use as the history entry, if null defaults to 2090 * 'about:blank'. 2091 */ 2092 public void loadDataWithBaseURL(String baseUrl, String data, 2093 String mimeType, String encoding, String historyUrl) { 2094 checkThread(); 2095 2096 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2097 loadDataImpl(data, mimeType, encoding); 2098 return; 2099 } 2100 switchOutDrawHistory(); 2101 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2102 arg.mBaseUrl = baseUrl; 2103 arg.mData = data; 2104 arg.mMimeType = mimeType; 2105 arg.mEncoding = encoding; 2106 arg.mHistoryUrl = historyUrl; 2107 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2108 clearHelpers(); 2109 } 2110 2111 /** 2112 * Saves the current view as a web archive. 2113 * 2114 * @param filename The filename where the archive should be placed. 2115 */ 2116 public void saveWebArchive(String filename) { 2117 checkThread(); 2118 saveWebArchiveImpl(filename, false, null); 2119 } 2120 2121 /* package */ static class SaveWebArchiveMessage { 2122 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2123 mBasename = basename; 2124 mAutoname = autoname; 2125 mCallback = callback; 2126 } 2127 2128 /* package */ final String mBasename; 2129 /* package */ final boolean mAutoname; 2130 /* package */ final ValueCallback<String> mCallback; 2131 /* package */ String mResultFile; 2132 } 2133 2134 /** 2135 * Saves the current view as a web archive. 2136 * 2137 * @param basename The filename where the archive should be placed. 2138 * @param autoname If false, takes basename to be a file. If true, basename 2139 * is assumed to be a directory in which a filename will be 2140 * chosen according to the url of the current page. 2141 * @param callback Called after the web archive has been saved. The 2142 * parameter for onReceiveValue will either be the filename 2143 * under which the file was saved, or null if saving the 2144 * file failed. 2145 */ 2146 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2147 checkThread(); 2148 saveWebArchiveImpl(basename, autoname, callback); 2149 } 2150 2151 private void saveWebArchiveImpl(String basename, boolean autoname, 2152 ValueCallback<String> callback) { 2153 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2154 new SaveWebArchiveMessage(basename, autoname, callback)); 2155 } 2156 2157 /** 2158 * Stop the current load. 2159 */ 2160 public void stopLoading() { 2161 checkThread(); 2162 // TODO: should we clear all the messages in the queue before sending 2163 // STOP_LOADING? 2164 switchOutDrawHistory(); 2165 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2166 } 2167 2168 /** 2169 * Reload the current url. 2170 */ 2171 public void reload() { 2172 checkThread(); 2173 clearHelpers(); 2174 switchOutDrawHistory(); 2175 mWebViewCore.sendMessage(EventHub.RELOAD); 2176 } 2177 2178 /** 2179 * Return true if this WebView has a back history item. 2180 * @return True iff this WebView has a back history item. 2181 */ 2182 public boolean canGoBack() { 2183 checkThread(); 2184 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2185 synchronized (l) { 2186 if (l.getClearPending()) { 2187 return false; 2188 } else { 2189 return l.getCurrentIndex() > 0; 2190 } 2191 } 2192 } 2193 2194 /** 2195 * Go back in the history of this WebView. 2196 */ 2197 public void goBack() { 2198 checkThread(); 2199 goBackOrForwardImpl(-1); 2200 } 2201 2202 /** 2203 * Return true if this WebView has a forward history item. 2204 * @return True iff this Webview has a forward history item. 2205 */ 2206 public boolean canGoForward() { 2207 checkThread(); 2208 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2209 synchronized (l) { 2210 if (l.getClearPending()) { 2211 return false; 2212 } else { 2213 return l.getCurrentIndex() < l.getSize() - 1; 2214 } 2215 } 2216 } 2217 2218 /** 2219 * Go forward in the history of this WebView. 2220 */ 2221 public void goForward() { 2222 checkThread(); 2223 goBackOrForwardImpl(1); 2224 } 2225 2226 /** 2227 * Return true if the page can go back or forward the given 2228 * number of steps. 2229 * @param steps The negative or positive number of steps to move the 2230 * history. 2231 */ 2232 public boolean canGoBackOrForward(int steps) { 2233 checkThread(); 2234 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2235 synchronized (l) { 2236 if (l.getClearPending()) { 2237 return false; 2238 } else { 2239 int newIndex = l.getCurrentIndex() + steps; 2240 return newIndex >= 0 && newIndex < l.getSize(); 2241 } 2242 } 2243 } 2244 2245 /** 2246 * Go to the history item that is the number of steps away from 2247 * the current item. Steps is negative if backward and positive 2248 * if forward. 2249 * @param steps The number of steps to take back or forward in the back 2250 * forward list. 2251 */ 2252 public void goBackOrForward(int steps) { 2253 checkThread(); 2254 goBackOrForwardImpl(steps); 2255 } 2256 2257 private void goBackOrForwardImpl(int steps) { 2258 goBackOrForward(steps, false); 2259 } 2260 2261 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2262 if (steps != 0) { 2263 clearHelpers(); 2264 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2265 ignoreSnapshot ? 1 : 0); 2266 } 2267 } 2268 2269 /** 2270 * Returns true if private browsing is enabled in this WebView. 2271 */ 2272 public boolean isPrivateBrowsingEnabled() { 2273 checkThread(); 2274 return getSettings().isPrivateBrowsingEnabled(); 2275 } 2276 2277 private void startPrivateBrowsing() { 2278 getSettings().setPrivateBrowsingEnabled(true); 2279 } 2280 2281 private boolean extendScroll(int y) { 2282 int finalY = mScroller.getFinalY(); 2283 int newY = pinLocY(finalY + y); 2284 if (newY == finalY) return false; 2285 mScroller.setFinalY(newY); 2286 mScroller.extendDuration(computeDuration(0, y)); 2287 return true; 2288 } 2289 2290 /** 2291 * Scroll the contents of the view up by half the view size 2292 * @param top true to jump to the top of the page 2293 * @return true if the page was scrolled 2294 */ 2295 public boolean pageUp(boolean top) { 2296 checkThread(); 2297 if (mNativeClass == 0) { 2298 return false; 2299 } 2300 nativeClearCursor(); // start next trackball movement from page edge 2301 if (top) { 2302 // go to the top of the document 2303 return pinScrollTo(mScrollX, 0, true, 0); 2304 } 2305 // Page up 2306 int h = getHeight(); 2307 int y; 2308 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2309 y = -h + PAGE_SCROLL_OVERLAP; 2310 } else { 2311 y = -h / 2; 2312 } 2313 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2314 : extendScroll(y); 2315 } 2316 2317 /** 2318 * Scroll the contents of the view down by half the page size 2319 * @param bottom true to jump to bottom of page 2320 * @return true if the page was scrolled 2321 */ 2322 public boolean pageDown(boolean bottom) { 2323 checkThread(); 2324 if (mNativeClass == 0) { 2325 return false; 2326 } 2327 nativeClearCursor(); // start next trackball movement from page edge 2328 if (bottom) { 2329 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2330 } 2331 // Page down. 2332 int h = getHeight(); 2333 int y; 2334 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2335 y = h - PAGE_SCROLL_OVERLAP; 2336 } else { 2337 y = h / 2; 2338 } 2339 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2340 : extendScroll(y); 2341 } 2342 2343 /** 2344 * Clear the view so that onDraw() will draw nothing but white background, 2345 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2346 */ 2347 public void clearView() { 2348 checkThread(); 2349 mContentWidth = 0; 2350 mContentHeight = 0; 2351 setBaseLayer(0, null, false, false, false); 2352 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2353 } 2354 2355 /** 2356 * Return a new picture that captures the current display of the webview. 2357 * This is a copy of the display, and will be unaffected if the webview 2358 * later loads a different URL. 2359 * 2360 * @return a picture containing the current contents of the view. Note this 2361 * picture is of the entire document, and is not restricted to the 2362 * bounds of the view. 2363 */ 2364 public Picture capturePicture() { 2365 checkThread(); 2366 if (mNativeClass == 0) return null; 2367 Picture result = new Picture(); 2368 nativeCopyBaseContentToPicture(result); 2369 return result; 2370 } 2371 2372 /** 2373 * Return true if the browser is displaying a TextView for text input. 2374 */ 2375 private boolean inEditingMode() { 2376 return mWebTextView != null && mWebTextView.getParent() != null; 2377 } 2378 2379 /** 2380 * Remove the WebTextView. 2381 */ 2382 private void clearTextEntry() { 2383 if (inEditingMode()) { 2384 mWebTextView.remove(); 2385 } else { 2386 // The keyboard may be open with the WebView as the served view 2387 hideSoftKeyboard(); 2388 } 2389 } 2390 2391 /** 2392 * Return the current scale of the WebView 2393 * @return The current scale. 2394 */ 2395 public float getScale() { 2396 checkThread(); 2397 return mZoomManager.getScale(); 2398 } 2399 2400 // Called by JNI. Returns the scale to apply to the text selection handles 2401 /* package */ float getTextHandleScale() { 2402 float density = mContext.getResources().getDisplayMetrics().density; 2403 return density / getScale(); 2404 } 2405 2406 /** 2407 * Return the reading level scale of the WebView 2408 * @return The reading level scale. 2409 */ 2410 /*package*/ float getReadingLevelScale() { 2411 return mZoomManager.getReadingLevelScale(); 2412 } 2413 2414 /** 2415 * Set the initial scale for the WebView. 0 means default. If 2416 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2417 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2418 * WebView starts will this value as initial scale. 2419 * 2420 * @param scaleInPercent The initial scale in percent. 2421 */ 2422 public void setInitialScale(int scaleInPercent) { 2423 checkThread(); 2424 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2425 } 2426 2427 /** 2428 * Invoke the graphical zoom picker widget for this WebView. This will 2429 * result in the zoom widget appearing on the screen to control the zoom 2430 * level of this WebView. 2431 */ 2432 public void invokeZoomPicker() { 2433 checkThread(); 2434 if (!getSettings().supportZoom()) { 2435 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2436 return; 2437 } 2438 clearHelpers(); 2439 mZoomManager.invokeZoomPicker(); 2440 } 2441 2442 /** 2443 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2444 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2445 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2446 * anchor does not have a url or if it is a JavaScript url, the type will 2447 * be UNKNOWN_TYPE and the url has to be retrieved through 2448 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2449 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2450 * the "extra" field. A type of 2451 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2452 * a child node. If a phone number is found, the HitTestResult type is set 2453 * to PHONE_TYPE and the phone number is set in the "extra" field of 2454 * HitTestResult. If a map address is found, the HitTestResult type is set 2455 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2456 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2457 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2458 * HitTestResult type is set to UNKNOWN_TYPE. 2459 */ 2460 public HitTestResult getHitTestResult() { 2461 checkThread(); 2462 return hitTestResult(mInitialHitTestResult); 2463 } 2464 2465 private HitTestResult hitTestResult(HitTestResult fallback) { 2466 if (mNativeClass == 0) { 2467 return null; 2468 } 2469 2470 HitTestResult result = new HitTestResult(); 2471 if (nativeHasCursorNode()) { 2472 if (nativeCursorIsTextInput()) { 2473 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2474 } else { 2475 String text = nativeCursorText(); 2476 if (text != null) { 2477 if (text.startsWith(SCHEME_TEL)) { 2478 result.setType(HitTestResult.PHONE_TYPE); 2479 result.setExtra(text.substring(SCHEME_TEL.length())); 2480 } else if (text.startsWith(SCHEME_MAILTO)) { 2481 result.setType(HitTestResult.EMAIL_TYPE); 2482 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2483 } else if (text.startsWith(SCHEME_GEO)) { 2484 result.setType(HitTestResult.GEO_TYPE); 2485 result.setExtra(URLDecoder.decode(text 2486 .substring(SCHEME_GEO.length()))); 2487 } else if (nativeCursorIsAnchor()) { 2488 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2489 result.setExtra(text); 2490 } 2491 } 2492 } 2493 } else if (fallback != null) { 2494 /* If webkit causes a rebuild while the long press is in progress, 2495 * the cursor node may be reset, even if it is still around. This 2496 * uses the cursor node saved when the touch began. Since the 2497 * nativeImageURI below only changes the result if it is successful, 2498 * this uses the data beneath the touch if available or the original 2499 * tap data otherwise. 2500 */ 2501 Log.v(LOGTAG, "hitTestResult use fallback"); 2502 result = fallback; 2503 } 2504 int type = result.getType(); 2505 if (type == HitTestResult.UNKNOWN_TYPE 2506 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2507 // Now check to see if it is an image. 2508 int contentX = viewToContentX(mLastTouchX + mScrollX); 2509 int contentY = viewToContentY(mLastTouchY + mScrollY); 2510 String text = nativeImageURI(contentX, contentY); 2511 if (text != null) { 2512 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2513 HitTestResult.IMAGE_TYPE : 2514 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2515 result.setExtra(text); 2516 } 2517 } 2518 return result; 2519 } 2520 2521 // Called by JNI when the DOM has changed the focus. Clear the focus so 2522 // that new keys will go to the newly focused field 2523 private void domChangedFocus() { 2524 if (inEditingMode()) { 2525 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2526 } 2527 } 2528 /** 2529 * Request the anchor or image element URL at the last tapped point. 2530 * If hrefMsg is null, this method returns immediately and does not 2531 * dispatch hrefMsg to its target. If the tapped point hits an image, 2532 * an anchor, or an image in an anchor, the message associates 2533 * strings in named keys in its data. The value paired with the key 2534 * may be an empty string. 2535 * 2536 * @param hrefMsg This message will be dispatched with the result of the 2537 * request. The message data contains three keys: 2538 * - "url" returns the anchor's href attribute. 2539 * - "title" returns the anchor's text. 2540 * - "src" returns the image's src attribute. 2541 */ 2542 public void requestFocusNodeHref(Message hrefMsg) { 2543 checkThread(); 2544 if (hrefMsg == null) { 2545 return; 2546 } 2547 int contentX = viewToContentX(mLastTouchX + mScrollX); 2548 int contentY = viewToContentY(mLastTouchY + mScrollY); 2549 if (nativeHasCursorNode()) { 2550 Rect cursorBounds = nativeGetCursorRingBounds(); 2551 if (!cursorBounds.contains(contentX, contentY)) { 2552 int slop = viewToContentDimension(mNavSlop); 2553 cursorBounds.inset(-slop, -slop); 2554 if (cursorBounds.contains(contentX, contentY)) { 2555 contentX = (int) cursorBounds.centerX(); 2556 contentY = (int) cursorBounds.centerY(); 2557 } 2558 } 2559 } 2560 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2561 contentX, contentY, hrefMsg); 2562 } 2563 2564 /** 2565 * Request the url of the image last touched by the user. msg will be sent 2566 * to its target with a String representing the url as its object. 2567 * 2568 * @param msg This message will be dispatched with the result of the request 2569 * as the data member with "url" as key. The result can be null. 2570 */ 2571 public void requestImageRef(Message msg) { 2572 checkThread(); 2573 if (0 == mNativeClass) return; // client isn't initialized 2574 int contentX = viewToContentX(mLastTouchX + mScrollX); 2575 int contentY = viewToContentY(mLastTouchY + mScrollY); 2576 String ref = nativeImageURI(contentX, contentY); 2577 Bundle data = msg.getData(); 2578 data.putString("url", ref); 2579 msg.setData(data); 2580 msg.sendToTarget(); 2581 } 2582 2583 static int pinLoc(int x, int viewMax, int docMax) { 2584// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2585 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2586 // pin the short document to the top/left of the screen 2587 x = 0; 2588// Log.d(LOGTAG, "--- center " + x); 2589 } else if (x < 0) { 2590 x = 0; 2591// Log.d(LOGTAG, "--- zero"); 2592 } else if (x + viewMax > docMax) { 2593 x = docMax - viewMax; 2594// Log.d(LOGTAG, "--- pin " + x); 2595 } 2596 return x; 2597 } 2598 2599 // Expects x in view coordinates 2600 int pinLocX(int x) { 2601 if (mInOverScrollMode) return x; 2602 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2603 } 2604 2605 // Expects y in view coordinates 2606 int pinLocY(int y) { 2607 if (mInOverScrollMode) return y; 2608 return pinLoc(y, getViewHeightWithTitle(), 2609 computeRealVerticalScrollRange() + getTitleHeight()); 2610 } 2611 2612 /** 2613 * A title bar which is embedded in this WebView, and scrolls along with it 2614 * vertically, but not horizontally. 2615 */ 2616 private View mTitleBar; 2617 2618 /** 2619 * the title bar rendering gravity 2620 */ 2621 private int mTitleGravity; 2622 2623 /** 2624 * Add or remove a title bar to be embedded into the WebView, and scroll 2625 * along with it vertically, while remaining in view horizontally. Pass 2626 * null to remove the title bar from the WebView, and return to drawing 2627 * the WebView normally without translating to account for the title bar. 2628 * @hide 2629 */ 2630 public void setEmbeddedTitleBar(View v) { 2631 if (mTitleBar == v) return; 2632 if (mTitleBar != null) { 2633 removeView(mTitleBar); 2634 } 2635 if (null != v) { 2636 addView(v, new AbsoluteLayout.LayoutParams( 2637 ViewGroup.LayoutParams.MATCH_PARENT, 2638 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2639 } 2640 mTitleBar = v; 2641 } 2642 2643 /** 2644 * Set where to render the embedded title bar 2645 * NO_GRAVITY at the top of the page 2646 * TOP at the top of the screen 2647 * @hide 2648 */ 2649 public void setTitleBarGravity(int gravity) { 2650 mTitleGravity = gravity; 2651 // force refresh 2652 invalidate(); 2653 } 2654 2655 /** 2656 * Given a distance in view space, convert it to content space. Note: this 2657 * does not reflect translation, just scaling, so this should not be called 2658 * with coordinates, but should be called for dimensions like width or 2659 * height. 2660 */ 2661 private int viewToContentDimension(int d) { 2662 return Math.round(d * mZoomManager.getInvScale()); 2663 } 2664 2665 /** 2666 * Given an x coordinate in view space, convert it to content space. Also 2667 * may be used for absolute heights (such as for the WebTextView's 2668 * textSize, which is unaffected by the height of the title bar). 2669 */ 2670 /*package*/ int viewToContentX(int x) { 2671 return viewToContentDimension(x); 2672 } 2673 2674 /** 2675 * Given a y coordinate in view space, convert it to content space. 2676 * Takes into account the height of the title bar if there is one 2677 * embedded into the WebView. 2678 */ 2679 /*package*/ int viewToContentY(int y) { 2680 return viewToContentDimension(y - getTitleHeight()); 2681 } 2682 2683 /** 2684 * Given a x coordinate in view space, convert it to content space. 2685 * Returns the result as a float. 2686 */ 2687 private float viewToContentXf(int x) { 2688 return x * mZoomManager.getInvScale(); 2689 } 2690 2691 /** 2692 * Given a y coordinate in view space, convert it to content space. 2693 * Takes into account the height of the title bar if there is one 2694 * embedded into the WebView. Returns the result as a float. 2695 */ 2696 private float viewToContentYf(int y) { 2697 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2698 } 2699 2700 /** 2701 * Given a distance in content space, convert it to view space. Note: this 2702 * does not reflect translation, just scaling, so this should not be called 2703 * with coordinates, but should be called for dimensions like width or 2704 * height. 2705 */ 2706 /*package*/ int contentToViewDimension(int d) { 2707 return Math.round(d * mZoomManager.getScale()); 2708 } 2709 2710 /** 2711 * Given an x coordinate in content space, convert it to view 2712 * space. 2713 */ 2714 /*package*/ int contentToViewX(int x) { 2715 return contentToViewDimension(x); 2716 } 2717 2718 /** 2719 * Given a y coordinate in content space, convert it to view 2720 * space. Takes into account the height of the title bar. 2721 */ 2722 /*package*/ int contentToViewY(int y) { 2723 return contentToViewDimension(y) + getTitleHeight(); 2724 } 2725 2726 private Rect contentToViewRect(Rect x) { 2727 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2728 contentToViewX(x.right), contentToViewY(x.bottom)); 2729 } 2730 2731 /* To invalidate a rectangle in content coordinates, we need to transform 2732 the rect into view coordinates, so we can then call invalidate(...). 2733 2734 Normally, we would just call contentToView[XY](...), which eventually 2735 calls Math.round(coordinate * mActualScale). However, for invalidates, 2736 we need to account for the slop that occurs with antialiasing. To 2737 address that, we are a little more liberal in the size of the rect that 2738 we invalidate. 2739 2740 This liberal calculation calls floor() for the top/left, and ceil() for 2741 the bottom/right coordinates. This catches the possible extra pixels of 2742 antialiasing that we might have missed with just round(). 2743 */ 2744 2745 // Called by JNI to invalidate the View, given rectangle coordinates in 2746 // content space 2747 private void viewInvalidate(int l, int t, int r, int b) { 2748 final float scale = mZoomManager.getScale(); 2749 final int dy = getTitleHeight(); 2750 invalidate((int)Math.floor(l * scale), 2751 (int)Math.floor(t * scale) + dy, 2752 (int)Math.ceil(r * scale), 2753 (int)Math.ceil(b * scale) + dy); 2754 } 2755 2756 // Called by JNI to invalidate the View after a delay, given rectangle 2757 // coordinates in content space 2758 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2759 final float scale = mZoomManager.getScale(); 2760 final int dy = getTitleHeight(); 2761 postInvalidateDelayed(delay, 2762 (int)Math.floor(l * scale), 2763 (int)Math.floor(t * scale) + dy, 2764 (int)Math.ceil(r * scale), 2765 (int)Math.ceil(b * scale) + dy); 2766 } 2767 2768 private void invalidateContentRect(Rect r) { 2769 viewInvalidate(r.left, r.top, r.right, r.bottom); 2770 } 2771 2772 // stop the scroll animation, and don't let a subsequent fling add 2773 // to the existing velocity 2774 private void abortAnimation() { 2775 mScroller.abortAnimation(); 2776 mLastVelocity = 0; 2777 } 2778 2779 /* call from webcoreview.draw(), so we're still executing in the UI thread 2780 */ 2781 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2782 2783 // premature data from webkit, ignore 2784 if ((w | h) == 0) { 2785 return; 2786 } 2787 2788 // don't abort a scroll animation if we didn't change anything 2789 if (mContentWidth != w || mContentHeight != h) { 2790 // record new dimensions 2791 mContentWidth = w; 2792 mContentHeight = h; 2793 // If history Picture is drawn, don't update scroll. They will be 2794 // updated when we get out of that mode. 2795 if (!mDrawHistory) { 2796 // repin our scroll, taking into account the new content size 2797 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2798 if (!mScroller.isFinished()) { 2799 // We are in the middle of a scroll. Repin the final scroll 2800 // position. 2801 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2802 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2803 } 2804 } 2805 } 2806 contentSizeChanged(updateLayout); 2807 } 2808 2809 // Used to avoid sending many visible rect messages. 2810 private Rect mLastVisibleRectSent; 2811 private Rect mLastGlobalRect; 2812 2813 Rect sendOurVisibleRect() { 2814 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2815 Rect rect = new Rect(); 2816 calcOurContentVisibleRect(rect); 2817 // Rect.equals() checks for null input. 2818 if (!rect.equals(mLastVisibleRectSent)) { 2819 if (!mBlockWebkitViewMessages) { 2820 Point pos = new Point(rect.left, rect.top); 2821 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2822 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2823 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2824 } 2825 mLastVisibleRectSent = rect; 2826 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2827 } 2828 Rect globalRect = new Rect(); 2829 if (getGlobalVisibleRect(globalRect) 2830 && !globalRect.equals(mLastGlobalRect)) { 2831 if (DebugFlags.WEB_VIEW) { 2832 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2833 + globalRect.top + ",r=" + globalRect.right + ",b=" 2834 + globalRect.bottom); 2835 } 2836 // TODO: the global offset is only used by windowRect() 2837 // in ChromeClientAndroid ; other clients such as touch 2838 // and mouse events could return view + screen relative points. 2839 if (!mBlockWebkitViewMessages) { 2840 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2841 } 2842 mLastGlobalRect = globalRect; 2843 } 2844 return rect; 2845 } 2846 2847 // Sets r to be the visible rectangle of our webview in view coordinates 2848 private void calcOurVisibleRect(Rect r) { 2849 Point p = new Point(); 2850 getGlobalVisibleRect(r, p); 2851 r.offset(-p.x, -p.y); 2852 } 2853 2854 // Sets r to be our visible rectangle in content coordinates 2855 private void calcOurContentVisibleRect(Rect r) { 2856 calcOurVisibleRect(r); 2857 r.left = viewToContentX(r.left); 2858 // viewToContentY will remove the total height of the title bar. Add 2859 // the visible height back in to account for the fact that if the title 2860 // bar is partially visible, the part of the visible rect which is 2861 // displaying our content is displaced by that amount. 2862 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2863 r.right = viewToContentX(r.right); 2864 r.bottom = viewToContentY(r.bottom); 2865 } 2866 2867 // Sets r to be our visible rectangle in content coordinates. We use this 2868 // method on the native side to compute the position of the fixed layers. 2869 // Uses floating coordinates (necessary to correctly place elements when 2870 // the scale factor is not 1) 2871 private void calcOurContentVisibleRectF(RectF r) { 2872 Rect ri = new Rect(0,0,0,0); 2873 calcOurVisibleRect(ri); 2874 r.left = viewToContentXf(ri.left); 2875 // viewToContentY will remove the total height of the title bar. Add 2876 // the visible height back in to account for the fact that if the title 2877 // bar is partially visible, the part of the visible rect which is 2878 // displaying our content is displaced by that amount. 2879 r.top = viewToContentYf(ri.top + getVisibleTitleHeightImpl()); 2880 r.right = viewToContentXf(ri.right); 2881 r.bottom = viewToContentYf(ri.bottom); 2882 } 2883 2884 static class ViewSizeData { 2885 int mWidth; 2886 int mHeight; 2887 float mHeightWidthRatio; 2888 int mActualViewHeight; 2889 int mTextWrapWidth; 2890 int mAnchorX; 2891 int mAnchorY; 2892 float mScale; 2893 boolean mIgnoreHeight; 2894 } 2895 2896 /** 2897 * Compute unzoomed width and height, and if they differ from the last 2898 * values we sent, send them to webkit (to be used as new viewport) 2899 * 2900 * @param force ensures that the message is sent to webkit even if the width 2901 * or height has not changed since the last message 2902 * 2903 * @return true if new values were sent 2904 */ 2905 boolean sendViewSizeZoom(boolean force) { 2906 if (mBlockWebkitViewMessages) return false; 2907 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2908 2909 int viewWidth = getViewWidth(); 2910 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2911 // This height could be fixed and be different from actual visible height. 2912 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2913 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2914 // Make the ratio more accurate than (newHeight / newWidth), since the 2915 // latter both are calculated and rounded. 2916 float heightWidthRatio = (float) viewHeight / viewWidth; 2917 /* 2918 * Because the native side may have already done a layout before the 2919 * View system was able to measure us, we have to send a height of 0 to 2920 * remove excess whitespace when we grow our width. This will trigger a 2921 * layout and a change in content size. This content size change will 2922 * mean that contentSizeChanged will either call this method directly or 2923 * indirectly from onSizeChanged. 2924 */ 2925 if (newWidth > mLastWidthSent && mWrapContent) { 2926 newHeight = 0; 2927 heightWidthRatio = 0; 2928 } 2929 // Actual visible content height. 2930 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2931 // Avoid sending another message if the dimensions have not changed. 2932 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2933 actualViewHeight != mLastActualHeightSent) { 2934 ViewSizeData data = new ViewSizeData(); 2935 data.mWidth = newWidth; 2936 data.mHeight = newHeight; 2937 data.mHeightWidthRatio = heightWidthRatio; 2938 data.mActualViewHeight = actualViewHeight; 2939 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2940 data.mScale = mZoomManager.getScale(); 2941 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2942 && !mHeightCanMeasure; 2943 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2944 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2945 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2946 mLastWidthSent = newWidth; 2947 mLastHeightSent = newHeight; 2948 mLastActualHeightSent = actualViewHeight; 2949 mZoomManager.clearDocumentAnchor(); 2950 return true; 2951 } 2952 return false; 2953 } 2954 2955 private int computeRealHorizontalScrollRange() { 2956 if (mDrawHistory) { 2957 return mHistoryWidth; 2958 } else { 2959 // to avoid rounding error caused unnecessary scrollbar, use floor 2960 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2961 } 2962 } 2963 2964 @Override 2965 protected int computeHorizontalScrollRange() { 2966 int range = computeRealHorizontalScrollRange(); 2967 2968 // Adjust reported range if overscrolled to compress the scroll bars 2969 final int scrollX = mScrollX; 2970 final int overscrollRight = computeMaxScrollX(); 2971 if (scrollX < 0) { 2972 range -= scrollX; 2973 } else if (scrollX > overscrollRight) { 2974 range += scrollX - overscrollRight; 2975 } 2976 2977 return range; 2978 } 2979 2980 @Override 2981 protected int computeHorizontalScrollOffset() { 2982 return Math.max(mScrollX, 0); 2983 } 2984 2985 private int computeRealVerticalScrollRange() { 2986 if (mDrawHistory) { 2987 return mHistoryHeight; 2988 } else { 2989 // to avoid rounding error caused unnecessary scrollbar, use floor 2990 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2991 } 2992 } 2993 2994 @Override 2995 protected int computeVerticalScrollRange() { 2996 int range = computeRealVerticalScrollRange(); 2997 2998 // Adjust reported range if overscrolled to compress the scroll bars 2999 final int scrollY = mScrollY; 3000 final int overscrollBottom = computeMaxScrollY(); 3001 if (scrollY < 0) { 3002 range -= scrollY; 3003 } else if (scrollY > overscrollBottom) { 3004 range += scrollY - overscrollBottom; 3005 } 3006 3007 return range; 3008 } 3009 3010 @Override 3011 protected int computeVerticalScrollOffset() { 3012 return Math.max(mScrollY - getTitleHeight(), 0); 3013 } 3014 3015 @Override 3016 protected int computeVerticalScrollExtent() { 3017 return getViewHeight(); 3018 } 3019 3020 /** @hide */ 3021 @Override 3022 protected void onDrawVerticalScrollBar(Canvas canvas, 3023 Drawable scrollBar, 3024 int l, int t, int r, int b) { 3025 if (mScrollY < 0) { 3026 t -= mScrollY; 3027 } 3028 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3029 scrollBar.draw(canvas); 3030 } 3031 3032 @Override 3033 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3034 boolean clampedY) { 3035 // Special-case layer scrolling so that we do not trigger normal scroll 3036 // updating. 3037 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3038 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 3039 mScrollingLayerRect.left = scrollX; 3040 mScrollingLayerRect.top = scrollY; 3041 invalidate(); 3042 return; 3043 } 3044 mInOverScrollMode = false; 3045 int maxX = computeMaxScrollX(); 3046 int maxY = computeMaxScrollY(); 3047 if (maxX == 0) { 3048 // do not over scroll x if the page just fits the screen 3049 scrollX = pinLocX(scrollX); 3050 } else if (scrollX < 0 || scrollX > maxX) { 3051 mInOverScrollMode = true; 3052 } 3053 if (scrollY < 0 || scrollY > maxY) { 3054 mInOverScrollMode = true; 3055 } 3056 3057 int oldX = mScrollX; 3058 int oldY = mScrollY; 3059 3060 super.scrollTo(scrollX, scrollY); 3061 3062 if (mOverScrollGlow != null) { 3063 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3064 } 3065 } 3066 3067 /** 3068 * Get the url for the current page. This is not always the same as the url 3069 * passed to WebViewClient.onPageStarted because although the load for 3070 * that url has begun, the current page may not have changed. 3071 * @return The url for the current page. 3072 */ 3073 public String getUrl() { 3074 checkThread(); 3075 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3076 return h != null ? h.getUrl() : null; 3077 } 3078 3079 /** 3080 * Get the original url for the current page. This is not always the same 3081 * as the url passed to WebViewClient.onPageStarted because although the 3082 * load for that url has begun, the current page may not have changed. 3083 * Also, there may have been redirects resulting in a different url to that 3084 * originally requested. 3085 * @return The url that was originally requested for the current page. 3086 */ 3087 public String getOriginalUrl() { 3088 checkThread(); 3089 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3090 return h != null ? h.getOriginalUrl() : null; 3091 } 3092 3093 /** 3094 * Get the title for the current page. This is the title of the current page 3095 * until WebViewClient.onReceivedTitle is called. 3096 * @return The title for the current page. 3097 */ 3098 public String getTitle() { 3099 checkThread(); 3100 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3101 return h != null ? h.getTitle() : null; 3102 } 3103 3104 /** 3105 * Get the favicon for the current page. This is the favicon of the current 3106 * page until WebViewClient.onReceivedIcon is called. 3107 * @return The favicon for the current page. 3108 */ 3109 public Bitmap getFavicon() { 3110 checkThread(); 3111 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3112 return h != null ? h.getFavicon() : null; 3113 } 3114 3115 /** 3116 * Get the touch icon url for the apple-touch-icon <link> element, or 3117 * a URL on this site's server pointing to the standard location of a 3118 * touch icon. 3119 * @hide 3120 */ 3121 public String getTouchIconUrl() { 3122 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3123 return h != null ? h.getTouchIconUrl() : null; 3124 } 3125 3126 /** 3127 * Get the progress for the current page. 3128 * @return The progress for the current page between 0 and 100. 3129 */ 3130 public int getProgress() { 3131 checkThread(); 3132 return mCallbackProxy.getProgress(); 3133 } 3134 3135 /** 3136 * @return the height of the HTML content. 3137 */ 3138 public int getContentHeight() { 3139 checkThread(); 3140 return mContentHeight; 3141 } 3142 3143 /** 3144 * @return the width of the HTML content. 3145 * @hide 3146 */ 3147 public int getContentWidth() { 3148 return mContentWidth; 3149 } 3150 3151 /** 3152 * @hide 3153 */ 3154 public int getPageBackgroundColor() { 3155 return nativeGetBackgroundColor(); 3156 } 3157 3158 /** 3159 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3160 * is a global requests, not restricted to just this webview. This can be 3161 * useful if the application has been paused. 3162 */ 3163 public void pauseTimers() { 3164 checkThread(); 3165 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3166 } 3167 3168 /** 3169 * Resume all layout, parsing, and JavaScript timers for all webviews. 3170 * This will resume dispatching all timers. 3171 */ 3172 public void resumeTimers() { 3173 checkThread(); 3174 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3175 } 3176 3177 /** 3178 * Call this to pause any extra processing associated with this WebView and 3179 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3180 * is taken offscreen, this could be called to reduce unnecessary CPU or 3181 * network traffic. When the WebView is again "active", call onResume(). 3182 * 3183 * Note that this differs from pauseTimers(), which affects all WebViews. 3184 */ 3185 public void onPause() { 3186 checkThread(); 3187 if (!mIsPaused) { 3188 mIsPaused = true; 3189 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3190 // We want to pause the current playing video when switching out 3191 // from the current WebView/tab. 3192 if (mHTML5VideoViewProxy != null) { 3193 mHTML5VideoViewProxy.pauseAndDispatch(); 3194 } 3195 } 3196 } 3197 3198 /** 3199 * Call this to resume a WebView after a previous call to onPause(). 3200 */ 3201 public void onResume() { 3202 checkThread(); 3203 if (mIsPaused) { 3204 mIsPaused = false; 3205 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3206 } 3207 } 3208 3209 /** 3210 * Returns true if the view is paused, meaning onPause() was called. Calling 3211 * onResume() sets the paused state back to false. 3212 * @hide 3213 */ 3214 public boolean isPaused() { 3215 return mIsPaused; 3216 } 3217 3218 /** 3219 * Call this to inform the view that memory is low so that it can 3220 * free any available memory. 3221 */ 3222 public void freeMemory() { 3223 checkThread(); 3224 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3225 } 3226 3227 /** 3228 * Clear the resource cache. Note that the cache is per-application, so 3229 * this will clear the cache for all WebViews used. 3230 * 3231 * @param includeDiskFiles If false, only the RAM cache is cleared. 3232 */ 3233 public void clearCache(boolean includeDiskFiles) { 3234 checkThread(); 3235 // Note: this really needs to be a static method as it clears cache for all 3236 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3237 // we can't make this static. 3238 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3239 includeDiskFiles ? 1 : 0, 0); 3240 } 3241 3242 /** 3243 * Make sure that clearing the form data removes the adapter from the 3244 * currently focused textfield if there is one. 3245 */ 3246 public void clearFormData() { 3247 checkThread(); 3248 if (inEditingMode()) { 3249 mWebTextView.setAdapterCustom(null); 3250 } 3251 } 3252 3253 /** 3254 * Tell the WebView to clear its internal back/forward list. 3255 */ 3256 public void clearHistory() { 3257 checkThread(); 3258 mCallbackProxy.getBackForwardList().setClearPending(); 3259 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3260 } 3261 3262 /** 3263 * Clear the SSL preferences table stored in response to proceeding with SSL 3264 * certificate errors. 3265 */ 3266 public void clearSslPreferences() { 3267 checkThread(); 3268 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3269 } 3270 3271 /** 3272 * Return the WebBackForwardList for this WebView. This contains the 3273 * back/forward list for use in querying each item in the history stack. 3274 * This is a copy of the private WebBackForwardList so it contains only a 3275 * snapshot of the current state. Multiple calls to this method may return 3276 * different objects. The object returned from this method will not be 3277 * updated to reflect any new state. 3278 */ 3279 public WebBackForwardList copyBackForwardList() { 3280 checkThread(); 3281 return mCallbackProxy.getBackForwardList().clone(); 3282 } 3283 3284 /* 3285 * Highlight and scroll to the next occurance of String in findAll. 3286 * Wraps the page infinitely, and scrolls. Must be called after 3287 * calling findAll. 3288 * 3289 * @param forward Direction to search. 3290 */ 3291 public void findNext(boolean forward) { 3292 checkThread(); 3293 if (0 == mNativeClass) return; // client isn't initialized 3294 nativeFindNext(forward); 3295 } 3296 3297 /* 3298 * Find all instances of find on the page and highlight them. 3299 * @param find String to find. 3300 * @return int The number of occurances of the String "find" 3301 * that were found. 3302 */ 3303 public int findAll(String find) { 3304 checkThread(); 3305 if (0 == mNativeClass) return 0; // client isn't initialized 3306 int result = find != null ? nativeFindAll(find.toLowerCase(), 3307 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3308 invalidate(); 3309 mLastFind = find; 3310 return result; 3311 } 3312 3313 /** 3314 * Start an ActionMode for finding text in this WebView. Only works if this 3315 * WebView is attached to the view system. 3316 * @param text If non-null, will be the initial text to search for. 3317 * Otherwise, the last String searched for in this WebView will 3318 * be used to start. 3319 * @param showIme If true, show the IME, assuming the user will begin typing. 3320 * If false and text is non-null, perform a find all. 3321 * @return boolean True if the find dialog is shown, false otherwise. 3322 */ 3323 public boolean showFindDialog(String text, boolean showIme) { 3324 checkThread(); 3325 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3326 if (getParent() == null || startActionMode(callback) == null) { 3327 // Could not start the action mode, so end Find on page 3328 return false; 3329 } 3330 mFindCallback = callback; 3331 setFindIsUp(true); 3332 mFindCallback.setWebView(this); 3333 if (showIme) { 3334 mFindCallback.showSoftInput(); 3335 } else if (text != null) { 3336 mFindCallback.setText(text); 3337 mFindCallback.findAll(); 3338 return true; 3339 } 3340 if (text == null) { 3341 text = mLastFind; 3342 } 3343 if (text != null) { 3344 mFindCallback.setText(text); 3345 } 3346 return true; 3347 } 3348 3349 /** 3350 * Keep track of the find callback so that we can remove its titlebar if 3351 * necessary. 3352 */ 3353 private FindActionModeCallback mFindCallback; 3354 3355 /** 3356 * Toggle whether the find dialog is showing, for both native and Java. 3357 */ 3358 private void setFindIsUp(boolean isUp) { 3359 mFindIsUp = isUp; 3360 if (0 == mNativeClass) return; // client isn't initialized 3361 nativeSetFindIsUp(isUp); 3362 } 3363 3364 /** 3365 * Return the index of the currently highlighted match. 3366 */ 3367 int findIndex() { 3368 if (0 == mNativeClass) return -1; 3369 return nativeFindIndex(); 3370 } 3371 3372 // Used to know whether the find dialog is open. Affects whether 3373 // or not we draw the highlights for matches. 3374 private boolean mFindIsUp; 3375 3376 // Keep track of the last string sent, so we can search again when find is 3377 // reopened. 3378 private String mLastFind; 3379 3380 /** 3381 * Return the first substring consisting of the address of a physical 3382 * location. Currently, only addresses in the United States are detected, 3383 * and consist of: 3384 * - a house number 3385 * - a street name 3386 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3387 * - a city name 3388 * - a state or territory, either spelled out or two-letter abbr. 3389 * - an optional 5 digit or 9 digit zip code. 3390 * 3391 * All names must be correctly capitalized, and the zip code, if present, 3392 * must be valid for the state. The street type must be a standard USPS 3393 * spelling or abbreviation. The state or territory must also be spelled 3394 * or abbreviated using USPS standards. The house number may not exceed 3395 * five digits. 3396 * @param addr The string to search for addresses. 3397 * 3398 * @return the address, or if no address is found, return null. 3399 */ 3400 public static String findAddress(String addr) { 3401 checkThread(); 3402 return findAddress(addr, false); 3403 } 3404 3405 /** 3406 * @hide 3407 * Return the first substring consisting of the address of a physical 3408 * location. Currently, only addresses in the United States are detected, 3409 * and consist of: 3410 * - a house number 3411 * - a street name 3412 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3413 * - a city name 3414 * - a state or territory, either spelled out or two-letter abbr. 3415 * - an optional 5 digit or 9 digit zip code. 3416 * 3417 * Names are optionally capitalized, and the zip code, if present, 3418 * must be valid for the state. The street type must be a standard USPS 3419 * spelling or abbreviation. The state or territory must also be spelled 3420 * or abbreviated using USPS standards. The house number may not exceed 3421 * five digits. 3422 * @param addr The string to search for addresses. 3423 * @param caseInsensitive addr Set to true to make search ignore case. 3424 * 3425 * @return the address, or if no address is found, return null. 3426 */ 3427 public static String findAddress(String addr, boolean caseInsensitive) { 3428 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3429 } 3430 3431 /* 3432 * Clear the highlighting surrounding text matches created by findAll. 3433 */ 3434 public void clearMatches() { 3435 checkThread(); 3436 if (mNativeClass == 0) 3437 return; 3438 nativeSetFindIsEmpty(); 3439 invalidate(); 3440 } 3441 3442 /** 3443 * Called when the find ActionMode ends. 3444 */ 3445 void notifyFindDialogDismissed() { 3446 mFindCallback = null; 3447 if (mWebViewCore == null) { 3448 return; 3449 } 3450 clearMatches(); 3451 setFindIsUp(false); 3452 // Now that the dialog has been removed, ensure that we scroll to a 3453 // location that is not beyond the end of the page. 3454 pinScrollTo(mScrollX, mScrollY, false, 0); 3455 invalidate(); 3456 } 3457 3458 /** 3459 * Query the document to see if it contains any image references. The 3460 * message object will be dispatched with arg1 being set to 1 if images 3461 * were found and 0 if the document does not reference any images. 3462 * @param response The message that will be dispatched with the result. 3463 */ 3464 public void documentHasImages(Message response) { 3465 checkThread(); 3466 if (response == null) { 3467 return; 3468 } 3469 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3470 } 3471 3472 /** 3473 * Request the scroller to abort any ongoing animation 3474 * 3475 * @hide 3476 */ 3477 public void stopScroll() { 3478 mScroller.forceFinished(true); 3479 mLastVelocity = 0; 3480 } 3481 3482 @Override 3483 public void computeScroll() { 3484 if (mScroller.computeScrollOffset()) { 3485 int oldX = mScrollX; 3486 int oldY = mScrollY; 3487 int x = mScroller.getCurrX(); 3488 int y = mScroller.getCurrY(); 3489 invalidate(); // So we draw again 3490 3491 if (!mScroller.isFinished()) { 3492 int rangeX = computeMaxScrollX(); 3493 int rangeY = computeMaxScrollY(); 3494 int overflingDistance = mOverflingDistance; 3495 3496 // Use the layer's scroll data if needed. 3497 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3498 oldX = mScrollingLayerRect.left; 3499 oldY = mScrollingLayerRect.top; 3500 rangeX = mScrollingLayerRect.right; 3501 rangeY = mScrollingLayerRect.bottom; 3502 // No overscrolling for layers. 3503 overflingDistance = 0; 3504 } 3505 3506 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3507 rangeX, rangeY, 3508 overflingDistance, overflingDistance, false); 3509 3510 if (mOverScrollGlow != null) { 3511 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3512 } 3513 } else { 3514 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3515 mScrollX = x; 3516 mScrollY = y; 3517 } else { 3518 // Update the layer position instead of WebView. 3519 nativeScrollLayer(mScrollingLayer, x, y); 3520 mScrollingLayerRect.left = x; 3521 mScrollingLayerRect.top = y; 3522 } 3523 abortAnimation(); 3524 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3525 nativeSetIsScrolling(false); 3526 if (!mBlockWebkitViewMessages) { 3527 WebViewCore.resumePriority(); 3528 if (!mSelectingText) { 3529 WebViewCore.resumeUpdatePicture(mWebViewCore); 3530 } 3531 } 3532 if (oldX != mScrollX || oldY != mScrollY) { 3533 sendOurVisibleRect(); 3534 } 3535 } 3536 } else { 3537 super.computeScroll(); 3538 } 3539 } 3540 3541 private static int computeDuration(int dx, int dy) { 3542 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3543 int duration = distance * 1000 / STD_SPEED; 3544 return Math.min(duration, MAX_DURATION); 3545 } 3546 3547 // helper to pin the scrollBy parameters (already in view coordinates) 3548 // returns true if the scroll was changed 3549 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3550 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3551 } 3552 // helper to pin the scrollTo parameters (already in view coordinates) 3553 // returns true if the scroll was changed 3554 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3555 x = pinLocX(x); 3556 y = pinLocY(y); 3557 int dx = x - mScrollX; 3558 int dy = y - mScrollY; 3559 3560 if ((dx | dy) == 0) { 3561 return false; 3562 } 3563 abortAnimation(); 3564 if (animate) { 3565 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3566 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3567 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3568 awakenScrollBars(mScroller.getDuration()); 3569 invalidate(); 3570 } else { 3571 scrollTo(x, y); 3572 } 3573 return true; 3574 } 3575 3576 // Scale from content to view coordinates, and pin. 3577 // Also called by jni webview.cpp 3578 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3579 if (mDrawHistory) { 3580 // disallow WebView to change the scroll position as History Picture 3581 // is used in the view system. 3582 // TODO: as we switchOutDrawHistory when trackball or navigation 3583 // keys are hit, this should be safe. Right? 3584 return false; 3585 } 3586 cx = contentToViewDimension(cx); 3587 cy = contentToViewDimension(cy); 3588 if (mHeightCanMeasure) { 3589 // move our visible rect according to scroll request 3590 if (cy != 0) { 3591 Rect tempRect = new Rect(); 3592 calcOurVisibleRect(tempRect); 3593 tempRect.offset(cx, cy); 3594 requestRectangleOnScreen(tempRect); 3595 } 3596 // FIXME: We scroll horizontally no matter what because currently 3597 // ScrollView and ListView will not scroll horizontally. 3598 // FIXME: Why do we only scroll horizontally if there is no 3599 // vertical scroll? 3600// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3601 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3602 } else { 3603 return pinScrollBy(cx, cy, animate, 0); 3604 } 3605 } 3606 3607 /** 3608 * Called by CallbackProxy when the page starts loading. 3609 * @param url The URL of the page which has started loading. 3610 */ 3611 /* package */ void onPageStarted(String url) { 3612 // every time we start a new page, we want to reset the 3613 // WebView certificate: if the new site is secure, we 3614 // will reload it and get a new certificate set; 3615 // if the new site is not secure, the certificate must be 3616 // null, and that will be the case 3617 setCertificate(null); 3618 3619 // reset the flag since we set to true in if need after 3620 // loading is see onPageFinished(Url) 3621 mAccessibilityScriptInjected = false; 3622 } 3623 3624 /** 3625 * Called by CallbackProxy when the page finishes loading. 3626 * @param url The URL of the page which has finished loading. 3627 */ 3628 /* package */ void onPageFinished(String url) { 3629 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3630 // If the user is now on a different page, or has scrolled the page 3631 // past the point where the title bar is offscreen, ignore the 3632 // scroll request. 3633 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3634 && mScrollX == 0 && mScrollY == 0) { 3635 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3636 SLIDE_TITLE_DURATION); 3637 } 3638 mPageThatNeedsToSlideTitleBarOffScreen = null; 3639 } 3640 mZoomManager.onPageFinished(url); 3641 injectAccessibilityForUrl(url); 3642 } 3643 3644 /** 3645 * This method injects accessibility in the loaded document if accessibility 3646 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3647 * If no URL specific script is found or JavaScript is disabled we fallback to 3648 * the default {@link AccessibilityInjector} implementation. 3649 * </p> 3650 * If the URL has the "axs" paramter set to 1 it has already done the 3651 * script injection so we do nothing. If the parameter is set to 0 3652 * the URL opts out accessibility script injection so we fall back to 3653 * the default {@link AccessibilityInjector}. 3654 * </p> 3655 * Note: If the user has not opted-in the accessibility script injection no scripts 3656 * are injected rather the default {@link AccessibilityInjector} implementation 3657 * is used. 3658 * 3659 * @param url The URL loaded by this {@link WebView}. 3660 */ 3661 private void injectAccessibilityForUrl(String url) { 3662 if (mWebViewCore == null) { 3663 return; 3664 } 3665 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3666 3667 if (!accessibilityManager.isEnabled()) { 3668 // it is possible that accessibility was turned off between reloads 3669 ensureAccessibilityScriptInjectorInstance(false); 3670 return; 3671 } 3672 3673 if (!getSettings().getJavaScriptEnabled()) { 3674 // no JS so we fallback to the basic buil-in support 3675 ensureAccessibilityScriptInjectorInstance(true); 3676 return; 3677 } 3678 3679 // check the URL "axs" parameter to choose appropriate action 3680 int axsParameterValue = getAxsUrlParameterValue(url); 3681 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3682 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3683 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3684 if (onDeviceScriptInjectionEnabled) { 3685 ensureAccessibilityScriptInjectorInstance(false); 3686 // neither script injected nor script injection opted out => we inject 3687 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3688 // TODO: Set this flag after successfull script injection. Maybe upon injection 3689 // the chooser should update the meta tag and we check it to declare success 3690 mAccessibilityScriptInjected = true; 3691 } else { 3692 // injection disabled so we fallback to the basic built-in support 3693 ensureAccessibilityScriptInjectorInstance(true); 3694 } 3695 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3696 // injection opted out so we fallback to the basic buil-in support 3697 ensureAccessibilityScriptInjectorInstance(true); 3698 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3699 ensureAccessibilityScriptInjectorInstance(false); 3700 // the URL provides accessibility but we still need to add our generic script 3701 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3702 } else { 3703 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3704 } 3705 } 3706 3707 /** 3708 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3709 * 3710 * @param present True to ensure an insance, false to ensure no instance. 3711 */ 3712 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3713 if (present) { 3714 if (mAccessibilityInjector == null) { 3715 mAccessibilityInjector = new AccessibilityInjector(this); 3716 } 3717 } else { 3718 mAccessibilityInjector = null; 3719 } 3720 } 3721 3722 /** 3723 * Gets the "axs" URL parameter value. 3724 * 3725 * @param url A url to fetch the paramter from. 3726 * @return The parameter value if such, -1 otherwise. 3727 */ 3728 private int getAxsUrlParameterValue(String url) { 3729 if (mMatchAxsUrlParameterPattern == null) { 3730 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3731 } 3732 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3733 if (matcher.find()) { 3734 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3735 return Integer.parseInt(keyValuePair.split("=")[1]); 3736 } 3737 return -1; 3738 } 3739 3740 /** 3741 * The URL of a page that sent a message to scroll the title bar off screen. 3742 * 3743 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3744 * title bar off the screen. Sometimes, the scroll position is set before 3745 * the page finishes loading. Rather than scrolling while the page is still 3746 * loading, keep track of the URL and new scroll position so we can perform 3747 * the scroll once the page finishes loading. 3748 */ 3749 private String mPageThatNeedsToSlideTitleBarOffScreen; 3750 3751 /** 3752 * The destination Y scroll position to be used when the page finishes 3753 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3754 */ 3755 private int mYDistanceToSlideTitleOffScreen; 3756 3757 // scale from content to view coordinates, and pin 3758 // return true if pin caused the final x/y different than the request cx/cy, 3759 // and a future scroll may reach the request cx/cy after our size has 3760 // changed 3761 // return false if the view scroll to the exact position as it is requested, 3762 // where negative numbers are taken to mean 0 3763 private boolean setContentScrollTo(int cx, int cy) { 3764 if (mDrawHistory) { 3765 // disallow WebView to change the scroll position as History Picture 3766 // is used in the view system. 3767 // One known case where this is called is that WebCore tries to 3768 // restore the scroll position. As history Picture already uses the 3769 // saved scroll position, it is ok to skip this. 3770 return false; 3771 } 3772 int vx; 3773 int vy; 3774 if ((cx | cy) == 0) { 3775 // If the page is being scrolled to (0,0), do not add in the title 3776 // bar's height, and simply scroll to (0,0). (The only other work 3777 // in contentToView_ is to multiply, so this would not change 0.) 3778 vx = 0; 3779 vy = 0; 3780 } else { 3781 vx = contentToViewX(cx); 3782 vy = contentToViewY(cy); 3783 } 3784// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3785// vx + " " + vy + "]"); 3786 // Some mobile sites attempt to scroll the title bar off the page by 3787 // scrolling to (0,1). If we are at the top left corner of the 3788 // page, assume this is an attempt to scroll off the title bar, and 3789 // animate the title bar off screen slowly enough that the user can see 3790 // it. 3791 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3792 && mTitleBar != null) { 3793 // FIXME: 100 should be defined somewhere as our max progress. 3794 if (getProgress() < 100) { 3795 // Wait to scroll the title bar off screen until the page has 3796 // finished loading. Keep track of the URL and the destination 3797 // Y position 3798 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3799 mYDistanceToSlideTitleOffScreen = vy; 3800 } else { 3801 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3802 } 3803 // Since we are animating, we have not yet reached the desired 3804 // scroll position. Do not return true to request another attempt 3805 return false; 3806 } 3807 pinScrollTo(vx, vy, false, 0); 3808 // If the request was to scroll to a negative coordinate, treat it as if 3809 // it was a request to scroll to 0 3810 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3811 return true; 3812 } else { 3813 return false; 3814 } 3815 } 3816 3817 // scale from content to view coordinates, and pin 3818 private void spawnContentScrollTo(int cx, int cy) { 3819 if (mDrawHistory) { 3820 // disallow WebView to change the scroll position as History Picture 3821 // is used in the view system. 3822 return; 3823 } 3824 int vx = contentToViewX(cx); 3825 int vy = contentToViewY(cy); 3826 pinScrollTo(vx, vy, true, 0); 3827 } 3828 3829 /** 3830 * These are from webkit, and are in content coordinate system (unzoomed) 3831 */ 3832 private void contentSizeChanged(boolean updateLayout) { 3833 // suppress 0,0 since we usually see real dimensions soon after 3834 // this avoids drawing the prev content in a funny place. If we find a 3835 // way to consolidate these notifications, this check may become 3836 // obsolete 3837 if ((mContentWidth | mContentHeight) == 0) { 3838 return; 3839 } 3840 3841 if (mHeightCanMeasure) { 3842 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3843 || updateLayout) { 3844 requestLayout(); 3845 } 3846 } else if (mWidthCanMeasure) { 3847 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3848 || updateLayout) { 3849 requestLayout(); 3850 } 3851 } else { 3852 // If we don't request a layout, try to send our view size to the 3853 // native side to ensure that WebCore has the correct dimensions. 3854 sendViewSizeZoom(false); 3855 } 3856 } 3857 3858 /** 3859 * Set the WebViewClient that will receive various notifications and 3860 * requests. This will replace the current handler. 3861 * @param client An implementation of WebViewClient. 3862 */ 3863 public void setWebViewClient(WebViewClient client) { 3864 checkThread(); 3865 mCallbackProxy.setWebViewClient(client); 3866 } 3867 3868 /** 3869 * Gets the WebViewClient 3870 * @return the current WebViewClient instance. 3871 * 3872 *@hide pending API council approval. 3873 */ 3874 public WebViewClient getWebViewClient() { 3875 return mCallbackProxy.getWebViewClient(); 3876 } 3877 3878 /** 3879 * Register the interface to be used when content can not be handled by 3880 * the rendering engine, and should be downloaded instead. This will replace 3881 * the current handler. 3882 * @param listener An implementation of DownloadListener. 3883 */ 3884 public void setDownloadListener(DownloadListener listener) { 3885 checkThread(); 3886 mCallbackProxy.setDownloadListener(listener); 3887 } 3888 3889 /** 3890 * Set the chrome handler. This is an implementation of WebChromeClient for 3891 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3892 * This will replace the current handler. 3893 * @param client An implementation of WebChromeClient. 3894 */ 3895 public void setWebChromeClient(WebChromeClient client) { 3896 checkThread(); 3897 mCallbackProxy.setWebChromeClient(client); 3898 } 3899 3900 /** 3901 * Gets the chrome handler. 3902 * @return the current WebChromeClient instance. 3903 * 3904 * @hide API council approval. 3905 */ 3906 public WebChromeClient getWebChromeClient() { 3907 return mCallbackProxy.getWebChromeClient(); 3908 } 3909 3910 /** 3911 * Set the back/forward list client. This is an implementation of 3912 * WebBackForwardListClient for handling new items and changes in the 3913 * history index. 3914 * @param client An implementation of WebBackForwardListClient. 3915 * {@hide} 3916 */ 3917 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3918 mCallbackProxy.setWebBackForwardListClient(client); 3919 } 3920 3921 /** 3922 * Gets the WebBackForwardListClient. 3923 * {@hide} 3924 */ 3925 public WebBackForwardListClient getWebBackForwardListClient() { 3926 return mCallbackProxy.getWebBackForwardListClient(); 3927 } 3928 3929 /** 3930 * Set the Picture listener. This is an interface used to receive 3931 * notifications of a new Picture. 3932 * @param listener An implementation of WebView.PictureListener. 3933 * @deprecated This method is now obsolete. 3934 */ 3935 @Deprecated 3936 public void setPictureListener(PictureListener listener) { 3937 checkThread(); 3938 mPictureListener = listener; 3939 } 3940 3941 /** 3942 * {@hide} 3943 */ 3944 /* FIXME: Debug only! Remove for SDK! */ 3945 public void externalRepresentation(Message callback) { 3946 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3947 } 3948 3949 /** 3950 * {@hide} 3951 */ 3952 /* FIXME: Debug only! Remove for SDK! */ 3953 public void documentAsText(Message callback) { 3954 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3955 } 3956 3957 /** 3958 * Use this function to bind an object to JavaScript so that the 3959 * methods can be accessed from JavaScript. 3960 * <p><strong>IMPORTANT:</strong> 3961 * <ul> 3962 * <li> Using addJavascriptInterface() allows JavaScript to control your 3963 * application. This can be a very useful feature or a dangerous security 3964 * issue. When the HTML in the WebView is untrustworthy (for example, part 3965 * or all of the HTML is provided by some person or process), then an 3966 * attacker could inject HTML that will execute your code and possibly any 3967 * code of the attacker's choosing.<br> 3968 * Do not use addJavascriptInterface() unless all of the HTML in this 3969 * WebView was written by you.</li> 3970 * <li> The Java object that is bound runs in another thread and not in 3971 * the thread that it was constructed in.</li> 3972 * </ul></p> 3973 * @param obj The class instance to bind to JavaScript, null instances are 3974 * ignored. 3975 * @param interfaceName The name to used to expose the instance in 3976 * JavaScript. 3977 */ 3978 public void addJavascriptInterface(Object obj, String interfaceName) { 3979 checkThread(); 3980 if (obj == null) { 3981 return; 3982 } 3983 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3984 arg.mObject = obj; 3985 arg.mInterfaceName = interfaceName; 3986 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3987 } 3988 3989 /** 3990 * Removes a previously added JavaScript interface with the given name. 3991 * @param interfaceName The name of the interface to remove. 3992 */ 3993 public void removeJavascriptInterface(String interfaceName) { 3994 checkThread(); 3995 if (mWebViewCore != null) { 3996 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3997 arg.mInterfaceName = interfaceName; 3998 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3999 } 4000 } 4001 4002 /** 4003 * Return the WebSettings object used to control the settings for this 4004 * WebView. 4005 * @return A WebSettings object that can be used to control this WebView's 4006 * settings. 4007 */ 4008 public WebSettings getSettings() { 4009 checkThread(); 4010 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4011 } 4012 4013 /** 4014 * Return the list of currently loaded plugins. 4015 * @return The list of currently loaded plugins. 4016 * 4017 * @hide 4018 * @deprecated This was used for Gears, which has been deprecated. 4019 */ 4020 @Deprecated 4021 public static synchronized PluginList getPluginList() { 4022 checkThread(); 4023 return new PluginList(); 4024 } 4025 4026 /** 4027 * @hide 4028 * @deprecated This was used for Gears, which has been deprecated. 4029 */ 4030 @Deprecated 4031 public void refreshPlugins(boolean reloadOpenPages) { 4032 checkThread(); 4033 } 4034 4035 //------------------------------------------------------------------------- 4036 // Override View methods 4037 //------------------------------------------------------------------------- 4038 4039 @Override 4040 protected void finalize() throws Throwable { 4041 try { 4042 if (mNativeClass != 0) { 4043 mPrivateHandler.post(new Runnable() { 4044 @Override 4045 public void run() { 4046 destroy(); 4047 } 4048 }); 4049 } 4050 } finally { 4051 super.finalize(); 4052 } 4053 } 4054 4055 @Override 4056 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4057 if (child == mTitleBar) { 4058 // When drawing the title bar, move it horizontally to always show 4059 // at the top of the WebView. 4060 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4061 int newTop = 0; 4062 if (mTitleGravity == Gravity.NO_GRAVITY) { 4063 newTop = Math.min(0, mScrollY); 4064 } else if (mTitleGravity == Gravity.TOP) { 4065 newTop = mScrollY; 4066 } 4067 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4068 mTitleBar.setTop(newTop); 4069 } 4070 return super.drawChild(canvas, child, drawingTime); 4071 } 4072 4073 private void drawContent(Canvas canvas, boolean drawRings) { 4074 // Update the buttons in the picture, so when we draw the picture 4075 // to the screen, they are in the correct state. 4076 // Tell the native side if user is a) touching the screen, 4077 // b) pressing the trackball down, or c) pressing the enter key 4078 // If the cursor is on a button, we need to draw it in the pressed 4079 // state. 4080 // If mNativeClass is 0, we should not reach here, so we do not 4081 // need to check it again. 4082 boolean pressed = (mTouchMode == TOUCH_SHORTPRESS_START_MODE 4083 || mTouchMode == TOUCH_INIT_MODE 4084 || mTouchMode == TOUCH_SHORTPRESS_MODE); 4085 recordButtons(canvas, 4086 hasFocus() && hasWindowFocus(), (pressed && !USE_WEBKIT_RINGS) 4087 || mTrackballDown || mGotCenterDown, false); 4088 drawCoreAndCursorRing(canvas, mBackgroundColor, 4089 mDrawCursorRing && drawRings); 4090 } 4091 4092 /** 4093 * Draw the background when beyond bounds 4094 * @param canvas Canvas to draw into 4095 */ 4096 private void drawOverScrollBackground(Canvas canvas) { 4097 if (mOverScrollBackground == null) { 4098 mOverScrollBackground = new Paint(); 4099 Bitmap bm = BitmapFactory.decodeResource( 4100 mContext.getResources(), 4101 com.android.internal.R.drawable.status_bar_background); 4102 mOverScrollBackground.setShader(new BitmapShader(bm, 4103 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4104 mOverScrollBorder = new Paint(); 4105 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4106 mOverScrollBorder.setStrokeWidth(0); 4107 mOverScrollBorder.setColor(0xffbbbbbb); 4108 } 4109 4110 int top = 0; 4111 int right = computeRealHorizontalScrollRange(); 4112 int bottom = top + computeRealVerticalScrollRange(); 4113 // first draw the background and anchor to the top of the view 4114 canvas.save(); 4115 canvas.translate(mScrollX, mScrollY); 4116 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4117 - mScrollY, Region.Op.DIFFERENCE); 4118 canvas.drawPaint(mOverScrollBackground); 4119 canvas.restore(); 4120 // then draw the border 4121 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4122 // next clip the region for the content 4123 canvas.clipRect(0, top, right, bottom); 4124 } 4125 4126 @Override 4127 protected void onDraw(Canvas canvas) { 4128 // if mNativeClass is 0, the WebView is either destroyed or not 4129 // initialized. In either case, just draw the background color and return 4130 if (mNativeClass == 0) { 4131 canvas.drawColor(mBackgroundColor); 4132 return; 4133 } 4134 4135 // if both mContentWidth and mContentHeight are 0, it means there is no 4136 // valid Picture passed to WebView yet. This can happen when WebView 4137 // just starts. Draw the background and return. 4138 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4139 canvas.drawColor(mBackgroundColor); 4140 return; 4141 } 4142 4143 if (canvas.isHardwareAccelerated()) { 4144 mZoomManager.setHardwareAccelerated(); 4145 } 4146 4147 int saveCount = canvas.save(); 4148 if (mInOverScrollMode && !getSettings() 4149 .getUseWebViewBackgroundForOverscrollBackground()) { 4150 drawOverScrollBackground(canvas); 4151 } 4152 if (mTitleBar != null) { 4153 canvas.translate(0, getTitleHeight()); 4154 } 4155 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4156 && (mTouchMode == TOUCH_INIT_MODE 4157 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4158 || mTouchMode == TOUCH_SHORTPRESS_MODE 4159 || mTouchMode == TOUCH_DONE_MODE); 4160 boolean drawNativeRings = !drawJavaRings; 4161 if (USE_WEBKIT_RINGS) { 4162 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4163 } 4164 drawContent(canvas, drawNativeRings); 4165 canvas.restoreToCount(saveCount); 4166 4167 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4168 invalidate(); 4169 } 4170 mWebViewCore.signalRepaintDone(); 4171 4172 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4173 invalidate(); 4174 } 4175 4176 // paint the highlight in the end 4177 if (drawJavaRings) { 4178 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4179 if (delay < ViewConfiguration.getTapTimeout()) { 4180 Rect r = mTouchHighlightRegion.getBounds(); 4181 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4182 } else { 4183 if (mTouchHightlightPaint == null) { 4184 mTouchHightlightPaint = new Paint(); 4185 mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR); 4186 } 4187 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4188 Rect r = new Rect(); 4189 while (iter.next(r)) { 4190 canvas.drawRect(r, mTouchHightlightPaint); 4191 } 4192 } 4193 } 4194 if (DEBUG_TOUCH_HIGHLIGHT) { 4195 if (getSettings().getNavDump()) { 4196 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4197 if (mTouchCrossHairColor == null) { 4198 mTouchCrossHairColor = new Paint(); 4199 mTouchCrossHairColor.setColor(Color.RED); 4200 } 4201 canvas.drawLine(mTouchHighlightX - mNavSlop, 4202 mTouchHighlightY - mNavSlop, mTouchHighlightX 4203 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4204 + 1, mTouchCrossHairColor); 4205 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4206 mTouchHighlightY - mNavSlop, mTouchHighlightX 4207 - mNavSlop, 4208 mTouchHighlightY + mNavSlop + 1, 4209 mTouchCrossHairColor); 4210 } 4211 } 4212 } 4213 } 4214 4215 private void removeTouchHighlight() { 4216 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4217 mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS); 4218 setTouchHighlightRects(null); 4219 } 4220 4221 @Override 4222 public void setLayoutParams(ViewGroup.LayoutParams params) { 4223 if (params.height == LayoutParams.WRAP_CONTENT) { 4224 mWrapContent = true; 4225 } 4226 super.setLayoutParams(params); 4227 } 4228 4229 @Override 4230 public boolean performLongClick() { 4231 // performLongClick() is the result of a delayed message. If we switch 4232 // to windows overview, the WebView will be temporarily removed from the 4233 // view system. In that case, do nothing. 4234 if (getParent() == null) return false; 4235 4236 // A multi-finger gesture can look like a long press; make sure we don't take 4237 // long press actions if we're scaling. 4238 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4239 if (detector != null && detector.isInProgress()) { 4240 return false; 4241 } 4242 4243 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4244 // Send the click so that the textfield is in focus 4245 centerKeyPressOnTextField(); 4246 rebuildWebTextView(); 4247 } else { 4248 clearTextEntry(); 4249 } 4250 if (inEditingMode()) { 4251 // Since we just called rebuildWebTextView, the layout is not set 4252 // properly. Update it so it can correctly find the word to select. 4253 mWebTextView.ensureLayout(); 4254 // Provide a touch down event to WebTextView, which will allow it 4255 // to store the location to use in performLongClick. 4256 AbsoluteLayout.LayoutParams params 4257 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4258 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4259 mLastTouchTime, MotionEvent.ACTION_DOWN, 4260 mLastTouchX - params.x + mScrollX, 4261 mLastTouchY - params.y + mScrollY, 0); 4262 mWebTextView.dispatchTouchEvent(fake); 4263 return mWebTextView.performLongClick(); 4264 } 4265 if (mSelectingText) return false; // long click does nothing on selection 4266 /* if long click brings up a context menu, the super function 4267 * returns true and we're done. Otherwise, nothing happened when 4268 * the user clicked. */ 4269 if (super.performLongClick()) { 4270 return true; 4271 } 4272 /* In the case where the application hasn't already handled the long 4273 * click action, look for a word under the click. If one is found, 4274 * animate the text selection into view. 4275 * FIXME: no animation code yet */ 4276 final boolean isSelecting = selectText(); 4277 if (isSelecting) { 4278 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4279 } 4280 return isSelecting; 4281 } 4282 4283 /** 4284 * Select the word at the last click point. 4285 * 4286 * @hide pending API council approval 4287 */ 4288 public boolean selectText() { 4289 int x = viewToContentX(mLastTouchX + mScrollX); 4290 int y = viewToContentY(mLastTouchY + mScrollY); 4291 return selectText(x, y); 4292 } 4293 4294 /** 4295 * Select the word at the indicated content coordinates. 4296 */ 4297 boolean selectText(int x, int y) { 4298 if (!setUpSelect(true, x, y)) { 4299 return false; 4300 } 4301 nativeSetExtendSelection(); 4302 mDrawSelectionPointer = false; 4303 mTouchMode = TOUCH_DRAG_MODE; 4304 return true; 4305 } 4306 4307 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4308 4309 @Override 4310 protected void onConfigurationChanged(Configuration newConfig) { 4311 if (mSelectingText && mOrientation != newConfig.orientation) { 4312 selectionDone(); 4313 } 4314 mOrientation = newConfig.orientation; 4315 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4316 } 4317 4318 /** 4319 * Keep track of the Callback so we can end its ActionMode or remove its 4320 * titlebar. 4321 */ 4322 private SelectActionModeCallback mSelectCallback; 4323 4324 // These values are possible options for didUpdateWebTextViewDimensions. 4325 private static final int FULLY_ON_SCREEN = 0; 4326 private static final int INTERSECTS_SCREEN = 1; 4327 private static final int ANYWHERE = 2; 4328 4329 /** 4330 * Check to see if the focused textfield/textarea is still on screen. If it 4331 * is, update the the dimensions and location of WebTextView. Otherwise, 4332 * remove the WebTextView. Should be called when the zoom level changes. 4333 * @param intersection How to determine whether the textfield/textarea is 4334 * still on screen. 4335 * @return boolean True if the textfield/textarea is still on screen and the 4336 * dimensions/location of WebTextView have been updated. 4337 */ 4338 private boolean didUpdateWebTextViewDimensions(int intersection) { 4339 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4340 Rect vBox = contentToViewRect(contentBounds); 4341 Rect visibleRect = new Rect(); 4342 calcOurVisibleRect(visibleRect); 4343 // If the textfield is on screen, place the WebTextView in 4344 // its new place, accounting for our new scroll/zoom values, 4345 // and adjust its textsize. 4346 boolean onScreen; 4347 switch (intersection) { 4348 case FULLY_ON_SCREEN: 4349 onScreen = visibleRect.contains(vBox); 4350 break; 4351 case INTERSECTS_SCREEN: 4352 onScreen = Rect.intersects(visibleRect, vBox); 4353 break; 4354 case ANYWHERE: 4355 onScreen = true; 4356 break; 4357 default: 4358 throw new AssertionError( 4359 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4360 } 4361 if (onScreen) { 4362 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4363 vBox.height()); 4364 mWebTextView.updateTextSize(); 4365 updateWebTextViewPadding(); 4366 return true; 4367 } else { 4368 // The textfield is now off screen. The user probably 4369 // was not zooming to see the textfield better. Remove 4370 // the WebTextView. If the user types a key, and the 4371 // textfield is still in focus, we will reconstruct 4372 // the WebTextView and scroll it back on screen. 4373 mWebTextView.remove(); 4374 return false; 4375 } 4376 } 4377 4378 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4379 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4380 if (mNativeClass == 0) 4381 return; 4382 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4383 isPictureAfterFirstLayout, registerPageSwapCallback); 4384 if (mHTML5VideoViewProxy != null) { 4385 mHTML5VideoViewProxy.setBaseLayer(layer); 4386 } 4387 } 4388 4389 int getBaseLayer() { 4390 if (mNativeClass == 0) { 4391 return 0; 4392 } 4393 return nativeGetBaseLayer(); 4394 } 4395 4396 private void onZoomAnimationStart() { 4397 // If it is in password mode, turn it off so it does not draw misplaced. 4398 if (inEditingMode()) { 4399 mWebTextView.setVisibility(INVISIBLE); 4400 } 4401 } 4402 4403 private void onZoomAnimationEnd() { 4404 // adjust the edit text view if needed 4405 if (inEditingMode() 4406 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4407 // If it is a password field, start drawing the WebTextView once 4408 // again. 4409 mWebTextView.setVisibility(VISIBLE); 4410 } 4411 } 4412 4413 void onFixedLengthZoomAnimationStart() { 4414 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4415 onZoomAnimationStart(); 4416 } 4417 4418 void onFixedLengthZoomAnimationEnd() { 4419 if (!mBlockWebkitViewMessages && !mSelectingText) { 4420 WebViewCore.resumeUpdatePicture(mWebViewCore); 4421 } 4422 onZoomAnimationEnd(); 4423 } 4424 4425 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4426 Paint.DITHER_FLAG | 4427 Paint.SUBPIXEL_TEXT_FLAG; 4428 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4429 Paint.DITHER_FLAG; 4430 4431 private final DrawFilter mZoomFilter = 4432 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4433 // If we need to trade better quality for speed, set mScrollFilter to null 4434 private final DrawFilter mScrollFilter = 4435 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4436 4437 private void drawCoreAndCursorRing(Canvas canvas, int color, 4438 boolean drawCursorRing) { 4439 if (mDrawHistory) { 4440 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4441 canvas.drawPicture(mHistoryPicture); 4442 return; 4443 } 4444 if (mNativeClass == 0) return; 4445 4446 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4447 boolean animateScroll = ((!mScroller.isFinished() 4448 || mVelocityTracker != null) 4449 && (mTouchMode != TOUCH_DRAG_MODE || 4450 mHeldMotionless != MOTIONLESS_TRUE)) 4451 || mDeferTouchMode == TOUCH_DRAG_MODE; 4452 if (mTouchMode == TOUCH_DRAG_MODE) { 4453 if (mHeldMotionless == MOTIONLESS_PENDING) { 4454 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4455 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4456 mHeldMotionless = MOTIONLESS_FALSE; 4457 } 4458 if (mHeldMotionless == MOTIONLESS_FALSE) { 4459 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4460 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4461 mHeldMotionless = MOTIONLESS_PENDING; 4462 } 4463 } 4464 int saveCount = canvas.save(); 4465 if (animateZoom) { 4466 mZoomManager.animateZoom(canvas); 4467 } else if (!canvas.isHardwareAccelerated()) { 4468 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4469 } 4470 4471 boolean UIAnimationsRunning = false; 4472 // Currently for each draw we compute the animation values; 4473 // We may in the future decide to do that independently. 4474 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4475 UIAnimationsRunning = true; 4476 // If we have unfinished (or unstarted) animations, 4477 // we ask for a repaint. We only need to do this in software 4478 // rendering (with hardware rendering we already have a different 4479 // method of requesting a repaint) 4480 if (!canvas.isHardwareAccelerated()) 4481 invalidate(); 4482 } 4483 4484 // decide which adornments to draw 4485 int extras = DRAW_EXTRAS_NONE; 4486 if (mFindIsUp) { 4487 extras = DRAW_EXTRAS_FIND; 4488 } else if (mSelectingText && !USE_JAVA_TEXT_SELECTION) { 4489 extras = DRAW_EXTRAS_SELECTION; 4490 nativeSetSelectionPointer(mDrawSelectionPointer, 4491 mZoomManager.getInvScale(), 4492 mSelectX, mSelectY - getTitleHeight()); 4493 } else if (drawCursorRing) { 4494 extras = DRAW_EXTRAS_CURSOR_RING; 4495 } 4496 if (DebugFlags.WEB_VIEW) { 4497 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4498 + " mSelectingText=" + mSelectingText 4499 + " nativePageShouldHandleShiftAndArrows()=" 4500 + nativePageShouldHandleShiftAndArrows() 4501 + " animateZoom=" + animateZoom 4502 + " extras=" + extras); 4503 } 4504 4505 if (canvas.isHardwareAccelerated()) { 4506 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4507 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4508 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4509 4510 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4511 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4512 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4513 } 4514 4515 } else { 4516 DrawFilter df = null; 4517 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4518 df = mZoomFilter; 4519 } else if (animateScroll) { 4520 df = mScrollFilter; 4521 } 4522 canvas.setDrawFilter(df); 4523 // XXX: Revisit splitting content. Right now it causes a 4524 // synchronization problem with layers. 4525 int content = nativeDraw(canvas, color, extras, false); 4526 canvas.setDrawFilter(null); 4527 if (!mBlockWebkitViewMessages && content != 0) { 4528 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4529 } 4530 } 4531 4532 canvas.restoreToCount(saveCount); 4533 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4534 drawTextSelectionHandles(canvas); 4535 } 4536 4537 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4538 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4539 mTouchMode = TOUCH_SHORTPRESS_MODE; 4540 } 4541 } 4542 if (mFocusSizeChanged) { 4543 mFocusSizeChanged = false; 4544 // If we are zooming, this will get handled above, when the zoom 4545 // finishes. We also do not need to do this unless the WebTextView 4546 // is showing. With hardware acceleration, the pageSwapCallback() 4547 // updates the WebTextView position in sync with page swapping 4548 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4549 didUpdateWebTextViewDimensions(ANYWHERE); 4550 } 4551 } 4552 } 4553 4554 private void drawTextSelectionHandles(Canvas canvas) { 4555 if (mTextSelectionPaint == null) { 4556 mTextSelectionPaint = new Paint(); 4557 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4558 } 4559 mTextSelectionRegion.setEmpty(); 4560 nativeGetTextSelectionRegion(mTextSelectionRegion); 4561 Rect r = new Rect(); 4562 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4563 int start_x = -1; 4564 int start_y = -1; 4565 int end_x = -1; 4566 int end_y = -1; 4567 while (iter.next(r)) { 4568 r = new Rect( 4569 contentToViewDimension(r.left), 4570 contentToViewDimension(r.top), 4571 contentToViewDimension(r.right), 4572 contentToViewDimension(r.bottom)); 4573 // Regions are in order. First one is where selection starts, 4574 // last one is where it ends 4575 if (start_x < 0 || start_y < 0) { 4576 start_x = r.left; 4577 start_y = r.bottom; 4578 } 4579 end_x = r.right; 4580 end_y = r.bottom; 4581 canvas.drawRect(r, mTextSelectionPaint); 4582 } 4583 if (mSelectHandleLeft == null) { 4584 mSelectHandleLeft = mContext.getResources().getDrawable( 4585 com.android.internal.R.drawable.text_select_handle_left); 4586 } 4587 // Magic formula copied from TextView 4588 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4589 mSelectHandleLeft.setBounds(start_x, start_y, 4590 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4591 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4592 if (mSelectHandleRight == null) { 4593 mSelectHandleRight = mContext.getResources().getDrawable( 4594 com.android.internal.R.drawable.text_select_handle_right); 4595 } 4596 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4597 mSelectHandleRight.setBounds(end_x, end_y, 4598 end_x + mSelectHandleRight.getIntrinsicWidth(), 4599 end_y + mSelectHandleRight.getIntrinsicHeight()); 4600 mSelectHandleLeft.draw(canvas); 4601 mSelectHandleRight.draw(canvas); 4602 } 4603 4604 // draw history 4605 private boolean mDrawHistory = false; 4606 private Picture mHistoryPicture = null; 4607 private int mHistoryWidth = 0; 4608 private int mHistoryHeight = 0; 4609 4610 // Only check the flag, can be called from WebCore thread 4611 boolean drawHistory() { 4612 return mDrawHistory; 4613 } 4614 4615 int getHistoryPictureWidth() { 4616 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4617 } 4618 4619 // Should only be called in UI thread 4620 void switchOutDrawHistory() { 4621 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4622 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4623 mDrawHistory = false; 4624 mHistoryPicture = null; 4625 invalidate(); 4626 int oldScrollX = mScrollX; 4627 int oldScrollY = mScrollY; 4628 mScrollX = pinLocX(mScrollX); 4629 mScrollY = pinLocY(mScrollY); 4630 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4631 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4632 } else { 4633 sendOurVisibleRect(); 4634 } 4635 } 4636 } 4637 4638 WebViewCore.CursorData cursorData() { 4639 WebViewCore.CursorData result = cursorDataNoPosition(); 4640 Point position = nativeCursorPosition(); 4641 result.mX = position.x; 4642 result.mY = position.y; 4643 return result; 4644 } 4645 4646 WebViewCore.CursorData cursorDataNoPosition() { 4647 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4648 result.mMoveGeneration = nativeMoveGeneration(); 4649 result.mFrame = nativeCursorFramePointer(); 4650 return result; 4651 } 4652 4653 /** 4654 * Delete text from start to end in the focused textfield. If there is no 4655 * focus, or if start == end, silently fail. If start and end are out of 4656 * order, swap them. 4657 * @param start Beginning of selection to delete. 4658 * @param end End of selection to delete. 4659 */ 4660 /* package */ void deleteSelection(int start, int end) { 4661 mTextGeneration++; 4662 WebViewCore.TextSelectionData data 4663 = new WebViewCore.TextSelectionData(start, end); 4664 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4665 data); 4666 } 4667 4668 /** 4669 * Set the selection to (start, end) in the focused textfield. If start and 4670 * end are out of order, swap them. 4671 * @param start Beginning of selection. 4672 * @param end End of selection. 4673 */ 4674 /* package */ void setSelection(int start, int end) { 4675 if (mWebViewCore != null) { 4676 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4677 } 4678 } 4679 4680 @Override 4681 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4682 InputConnection connection = super.onCreateInputConnection(outAttrs); 4683 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4684 return connection; 4685 } 4686 4687 /** 4688 * Called in response to a message from webkit telling us that the soft 4689 * keyboard should be launched. 4690 */ 4691 private void displaySoftKeyboard(boolean isTextView) { 4692 InputMethodManager imm = (InputMethodManager) 4693 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4694 4695 // bring it back to the default level scale so that user can enter text 4696 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4697 if (zoom) { 4698 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4699 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4700 } 4701 if (isTextView) { 4702 rebuildWebTextView(); 4703 if (inEditingMode()) { 4704 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4705 if (zoom) { 4706 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4707 } 4708 return; 4709 } 4710 } 4711 // Used by plugins and contentEditable. 4712 // Also used if the navigation cache is out of date, and 4713 // does not recognize that a textfield is in focus. In that 4714 // case, use WebView as the targeted view. 4715 // see http://b/issue?id=2457459 4716 imm.showSoftInput(this, 0); 4717 } 4718 4719 // Called by WebKit to instruct the UI to hide the keyboard 4720 private void hideSoftKeyboard() { 4721 InputMethodManager imm = InputMethodManager.peekInstance(); 4722 if (imm != null && (imm.isActive(this) 4723 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4724 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4725 } 4726 } 4727 4728 /* 4729 * This method checks the current focus and cursor and potentially rebuilds 4730 * mWebTextView to have the appropriate properties, such as password, 4731 * multiline, and what text it contains. It also removes it if necessary. 4732 */ 4733 /* package */ void rebuildWebTextView() { 4734 // If the WebView does not have focus, do nothing until it gains focus. 4735 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4736 return; 4737 } 4738 boolean alreadyThere = inEditingMode(); 4739 // inEditingMode can only return true if mWebTextView is non-null, 4740 // so we can safely call remove() if (alreadyThere) 4741 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4742 if (alreadyThere) { 4743 mWebTextView.remove(); 4744 } 4745 return; 4746 } 4747 // At this point, we know we have found an input field, so go ahead 4748 // and create the WebTextView if necessary. 4749 if (mWebTextView == null) { 4750 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4751 // Initialize our generation number. 4752 mTextGeneration = 0; 4753 } 4754 mWebTextView.updateTextSize(); 4755 Rect visibleRect = new Rect(); 4756 calcOurContentVisibleRect(visibleRect); 4757 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4758 // should be in content coordinates. 4759 Rect bounds = nativeFocusCandidateNodeBounds(); 4760 Rect vBox = contentToViewRect(bounds); 4761 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4762 if (!Rect.intersects(bounds, visibleRect)) { 4763 revealSelection(); 4764 } 4765 String text = nativeFocusCandidateText(); 4766 int nodePointer = nativeFocusCandidatePointer(); 4767 // This needs to be called before setType, which may call 4768 // requestFormData, and it needs to have the correct nodePointer. 4769 mWebTextView.setNodePointer(nodePointer); 4770 mWebTextView.setType(nativeFocusCandidateType()); 4771 // Gravity needs to be set after setType 4772 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 4773 updateWebTextViewPadding(); 4774 if (null == text) { 4775 if (DebugFlags.WEB_VIEW) { 4776 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4777 } 4778 text = ""; 4779 } 4780 mWebTextView.setTextAndKeepSelection(text); 4781 InputMethodManager imm = InputMethodManager.peekInstance(); 4782 if (imm != null && imm.isActive(mWebTextView)) { 4783 imm.restartInput(mWebTextView); 4784 } 4785 if (isFocused()) { 4786 mWebTextView.requestFocus(); 4787 } 4788 } 4789 4790 /** 4791 * Update the padding of mWebTextView based on the native textfield/textarea 4792 */ 4793 void updateWebTextViewPadding() { 4794 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4795 if (paddingRect != null) { 4796 // Use contentToViewDimension since these are the dimensions of 4797 // the padding. 4798 mWebTextView.setPadding( 4799 contentToViewDimension(paddingRect.left), 4800 contentToViewDimension(paddingRect.top), 4801 contentToViewDimension(paddingRect.right), 4802 contentToViewDimension(paddingRect.bottom)); 4803 } 4804 } 4805 4806 /** 4807 * Tell webkit to put the cursor on screen. 4808 */ 4809 /* package */ void revealSelection() { 4810 if (mWebViewCore != null) { 4811 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4812 } 4813 } 4814 4815 /** 4816 * Called by WebTextView to find saved form data associated with the 4817 * textfield 4818 * @param name Name of the textfield. 4819 * @param nodePointer Pointer to the node of the textfield, so it can be 4820 * compared to the currently focused textfield when the data is 4821 * retrieved. 4822 * @param autoFillable true if WebKit has determined this field is part of 4823 * a form that can be auto filled. 4824 * @param autoComplete true if the attribute "autocomplete" is set to true 4825 * on the textfield. 4826 */ 4827 /* package */ void requestFormData(String name, int nodePointer, 4828 boolean autoFillable, boolean autoComplete) { 4829 if (mWebViewCore.getSettings().getSaveFormData()) { 4830 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4831 update.arg1 = nodePointer; 4832 RequestFormData updater = new RequestFormData(name, getUrl(), 4833 update, autoFillable, autoComplete); 4834 Thread t = new Thread(updater); 4835 t.start(); 4836 } 4837 } 4838 4839 /** 4840 * Pass a message to find out the <label> associated with the <input> 4841 * identified by nodePointer 4842 * @param framePointer Pointer to the frame containing the <input> node 4843 * @param nodePointer Pointer to the node for which a <label> is desired. 4844 */ 4845 /* package */ void requestLabel(int framePointer, int nodePointer) { 4846 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4847 nodePointer); 4848 } 4849 4850 /* 4851 * This class requests an Adapter for the WebTextView which shows past 4852 * entries stored in the database. It is a Runnable so that it can be done 4853 * in its own thread, without slowing down the UI. 4854 */ 4855 private class RequestFormData implements Runnable { 4856 private String mName; 4857 private String mUrl; 4858 private Message mUpdateMessage; 4859 private boolean mAutoFillable; 4860 private boolean mAutoComplete; 4861 private WebSettings mWebSettings; 4862 4863 public RequestFormData(String name, String url, Message msg, 4864 boolean autoFillable, boolean autoComplete) { 4865 mName = name; 4866 mUrl = WebTextView.urlForAutoCompleteData(url); 4867 mUpdateMessage = msg; 4868 mAutoFillable = autoFillable; 4869 mAutoComplete = autoComplete; 4870 mWebSettings = getSettings(); 4871 } 4872 4873 public void run() { 4874 ArrayList<String> pastEntries = new ArrayList<String>(); 4875 4876 if (mAutoFillable) { 4877 // Note that code inside the adapter click handler in WebTextView depends 4878 // on the AutoFill item being at the top of the drop down list. If you change 4879 // the order, make sure to do it there too! 4880 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 4881 pastEntries.add(getResources().getText( 4882 com.android.internal.R.string.autofill_this_form).toString() + 4883 " " + 4884 mAutoFillData.getPreviewString()); 4885 mWebTextView.setAutoFillProfileIsSet(true); 4886 } else { 4887 // There is no autofill profile set up yet, so add an option that 4888 // will invite the user to set their profile up. 4889 pastEntries.add(getResources().getText( 4890 com.android.internal.R.string.setup_autofill).toString()); 4891 mWebTextView.setAutoFillProfileIsSet(false); 4892 } 4893 } 4894 4895 if (mAutoComplete) { 4896 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4897 } 4898 4899 if (pastEntries.size() > 0) { 4900 AutoCompleteAdapter adapter = new 4901 AutoCompleteAdapter(mContext, pastEntries); 4902 mUpdateMessage.obj = adapter; 4903 mUpdateMessage.sendToTarget(); 4904 } 4905 } 4906 } 4907 4908 /** 4909 * Dump the display tree to "/sdcard/displayTree.txt" 4910 * 4911 * @hide debug only 4912 */ 4913 public void dumpDisplayTree() { 4914 nativeDumpDisplayTree(getUrl()); 4915 } 4916 4917 /** 4918 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4919 * "/sdcard/domTree.txt" 4920 * 4921 * @hide debug only 4922 */ 4923 public void dumpDomTree(boolean toFile) { 4924 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4925 } 4926 4927 /** 4928 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4929 * to "/sdcard/renderTree.txt" 4930 * 4931 * @hide debug only 4932 */ 4933 public void dumpRenderTree(boolean toFile) { 4934 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4935 } 4936 4937 /** 4938 * Called by DRT on UI thread, need to proxy to WebCore thread. 4939 * 4940 * @hide debug only 4941 */ 4942 public void useMockDeviceOrientation() { 4943 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4944 } 4945 4946 /** 4947 * Called by DRT on WebCore thread. 4948 * 4949 * @hide debug only 4950 */ 4951 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4952 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4953 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4954 canProvideGamma, gamma); 4955 } 4956 4957 /** 4958 * Dump the V8 counters to standard output. 4959 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4960 * true. Otherwise, this will do nothing. 4961 * 4962 * @hide debug only 4963 */ 4964 public void dumpV8Counters() { 4965 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4966 } 4967 4968 // This is used to determine long press with the center key. Does not 4969 // affect long press with the trackball/touch. 4970 private boolean mGotCenterDown = false; 4971 4972 @Override 4973 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4974 if (mBlockWebkitViewMessages) { 4975 return false; 4976 } 4977 // send complex characters to webkit for use by JS and plugins 4978 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4979 // pass the key to DOM 4980 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4981 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4982 // return true as DOM handles the key 4983 return true; 4984 } 4985 return false; 4986 } 4987 4988 private boolean isEnterActionKey(int keyCode) { 4989 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4990 || keyCode == KeyEvent.KEYCODE_ENTER 4991 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4992 } 4993 4994 @Override 4995 public boolean onKeyDown(int keyCode, KeyEvent event) { 4996 if (DebugFlags.WEB_VIEW) { 4997 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4998 + "keyCode=" + keyCode 4999 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5000 } 5001 if (mBlockWebkitViewMessages) { 5002 return false; 5003 } 5004 5005 // don't implement accelerator keys here; defer to host application 5006 if (event.isCtrlPressed()) { 5007 return false; 5008 } 5009 5010 if (mNativeClass == 0) { 5011 return false; 5012 } 5013 5014 // do this hack up front, so it always works, regardless of touch-mode 5015 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5016 mAutoRedraw = !mAutoRedraw; 5017 if (mAutoRedraw) { 5018 invalidate(); 5019 } 5020 return true; 5021 } 5022 5023 // Bubble up the key event if 5024 // 1. it is a system key; or 5025 // 2. the host application wants to handle it; 5026 if (event.isSystem() 5027 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5028 return false; 5029 } 5030 5031 // accessibility support 5032 if (accessibilityScriptInjected()) { 5033 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5034 // if an accessibility script is injected we delegate to it the key handling. 5035 // this script is a screen reader which is a fully fledged solution for blind 5036 // users to navigate in and interact with web pages. 5037 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5038 return true; 5039 } else { 5040 // Clean up if accessibility was disabled after loading the current URL. 5041 mAccessibilityScriptInjected = false; 5042 } 5043 } else if (mAccessibilityInjector != null) { 5044 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5045 if (mAccessibilityInjector.onKeyEvent(event)) { 5046 // if an accessibility injector is present (no JavaScript enabled or the site 5047 // opts out injecting our JavaScript screen reader) we let it decide whether 5048 // to act on and consume the event. 5049 return true; 5050 } 5051 } else { 5052 // Clean up if accessibility was disabled after loading the current URL. 5053 mAccessibilityInjector = null; 5054 } 5055 } 5056 5057 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5058 if (event.hasNoModifiers()) { 5059 pageUp(false); 5060 return true; 5061 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5062 pageUp(true); 5063 return true; 5064 } 5065 } 5066 5067 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5068 if (event.hasNoModifiers()) { 5069 pageDown(false); 5070 return true; 5071 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5072 pageDown(true); 5073 return true; 5074 } 5075 } 5076 5077 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5078 pageUp(true); 5079 return true; 5080 } 5081 5082 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5083 pageDown(true); 5084 return true; 5085 } 5086 5087 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5088 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5089 switchOutDrawHistory(); 5090 if (nativePageShouldHandleShiftAndArrows()) { 5091 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5092 return true; 5093 } 5094 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5095 switch (keyCode) { 5096 case KeyEvent.KEYCODE_DPAD_UP: 5097 pageUp(true); 5098 return true; 5099 case KeyEvent.KEYCODE_DPAD_DOWN: 5100 pageDown(true); 5101 return true; 5102 case KeyEvent.KEYCODE_DPAD_LEFT: 5103 nativeClearCursor(); // start next trackball movement from page edge 5104 return pinScrollTo(0, mScrollY, true, 0); 5105 case KeyEvent.KEYCODE_DPAD_RIGHT: 5106 nativeClearCursor(); // start next trackball movement from page edge 5107 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5108 } 5109 } 5110 if (mSelectingText) { 5111 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5112 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5113 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5114 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5115 int multiplier = event.getRepeatCount() + 1; 5116 moveSelection(xRate * multiplier, yRate * multiplier); 5117 return true; 5118 } 5119 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5120 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5121 return true; 5122 } 5123 // Bubble up the key event as WebView doesn't handle it 5124 return false; 5125 } 5126 5127 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5128 switchOutDrawHistory(); 5129 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5130 || nativeCursorWantsKeyEvents(); 5131 if (event.getRepeatCount() == 0) { 5132 if (mSelectingText) { 5133 return true; // discard press if copy in progress 5134 } 5135 mGotCenterDown = true; 5136 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5137 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5138 // Already checked mNativeClass, so we do not need to check it 5139 // again. 5140 recordButtons(null, hasFocus() && hasWindowFocus(), true, true); 5141 if (!wantsKeyEvents) return true; 5142 } 5143 // Bubble up the key event as WebView doesn't handle it 5144 if (!wantsKeyEvents) return false; 5145 } 5146 5147 if (getSettings().getNavDump()) { 5148 switch (keyCode) { 5149 case KeyEvent.KEYCODE_4: 5150 dumpDisplayTree(); 5151 break; 5152 case KeyEvent.KEYCODE_5: 5153 case KeyEvent.KEYCODE_6: 5154 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5155 break; 5156 case KeyEvent.KEYCODE_7: 5157 case KeyEvent.KEYCODE_8: 5158 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5159 break; 5160 case KeyEvent.KEYCODE_9: 5161 nativeInstrumentReport(); 5162 return true; 5163 } 5164 } 5165 5166 if (nativeCursorIsTextInput()) { 5167 // This message will put the node in focus, for the DOM's notion 5168 // of focus. 5169 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5170 nativeCursorNodePointer()); 5171 // This will bring up the WebTextView and put it in focus, for 5172 // our view system's notion of focus 5173 rebuildWebTextView(); 5174 // Now we need to pass the event to it 5175 if (inEditingMode()) { 5176 mWebTextView.setDefaultSelection(); 5177 return mWebTextView.dispatchKeyEvent(event); 5178 } 5179 } else if (nativeHasFocusNode()) { 5180 // In this case, the cursor is not on a text input, but the focus 5181 // might be. Check it, and if so, hand over to the WebTextView. 5182 rebuildWebTextView(); 5183 if (inEditingMode()) { 5184 mWebTextView.setDefaultSelection(); 5185 return mWebTextView.dispatchKeyEvent(event); 5186 } 5187 } 5188 5189 // TODO: should we pass all the keys to DOM or check the meta tag 5190 if (nativeCursorWantsKeyEvents() || true) { 5191 // pass the key to DOM 5192 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5193 // return true as DOM handles the key 5194 return true; 5195 } 5196 5197 // Bubble up the key event as WebView doesn't handle it 5198 return false; 5199 } 5200 5201 @Override 5202 public boolean onKeyUp(int keyCode, KeyEvent event) { 5203 if (DebugFlags.WEB_VIEW) { 5204 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5205 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5206 } 5207 if (mBlockWebkitViewMessages) { 5208 return false; 5209 } 5210 5211 if (mNativeClass == 0) { 5212 return false; 5213 } 5214 5215 // special CALL handling when cursor node's href is "tel:XXX" 5216 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5217 String text = nativeCursorText(); 5218 if (!nativeCursorIsTextInput() && text != null 5219 && text.startsWith(SCHEME_TEL)) { 5220 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5221 getContext().startActivity(intent); 5222 return true; 5223 } 5224 } 5225 5226 // Bubble up the key event if 5227 // 1. it is a system key; or 5228 // 2. the host application wants to handle it; 5229 if (event.isSystem() 5230 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5231 return false; 5232 } 5233 5234 // accessibility support 5235 if (accessibilityScriptInjected()) { 5236 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5237 // if an accessibility script is injected we delegate to it the key handling. 5238 // this script is a screen reader which is a fully fledged solution for blind 5239 // users to navigate in and interact with web pages. 5240 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5241 return true; 5242 } else { 5243 // Clean up if accessibility was disabled after loading the current URL. 5244 mAccessibilityScriptInjected = false; 5245 } 5246 } else if (mAccessibilityInjector != null) { 5247 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5248 if (mAccessibilityInjector.onKeyEvent(event)) { 5249 // if an accessibility injector is present (no JavaScript enabled or the site 5250 // opts out injecting our JavaScript screen reader) we let it decide whether to 5251 // act on and consume the event. 5252 return true; 5253 } 5254 } else { 5255 // Clean up if accessibility was disabled after loading the current URL. 5256 mAccessibilityInjector = null; 5257 } 5258 } 5259 5260 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5261 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5262 if (nativePageShouldHandleShiftAndArrows()) { 5263 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5264 return true; 5265 } 5266 // always handle the navigation keys in the UI thread 5267 // Bubble up the key event as WebView doesn't handle it 5268 return false; 5269 } 5270 5271 if (isEnterActionKey(keyCode)) { 5272 // remove the long press message first 5273 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5274 mGotCenterDown = false; 5275 5276 if (mSelectingText) { 5277 if (mExtendSelection) { 5278 copySelection(); 5279 selectionDone(); 5280 } else { 5281 mExtendSelection = true; 5282 nativeSetExtendSelection(); 5283 invalidate(); // draw the i-beam instead of the arrow 5284 } 5285 return true; // discard press if copy in progress 5286 } 5287 5288 // perform the single click 5289 Rect visibleRect = sendOurVisibleRect(); 5290 // Note that sendOurVisibleRect calls viewToContent, so the 5291 // coordinates should be in content coordinates. 5292 if (!nativeCursorIntersects(visibleRect)) { 5293 return false; 5294 } 5295 WebViewCore.CursorData data = cursorData(); 5296 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5297 playSoundEffect(SoundEffectConstants.CLICK); 5298 if (nativeCursorIsTextInput()) { 5299 rebuildWebTextView(); 5300 centerKeyPressOnTextField(); 5301 if (inEditingMode()) { 5302 mWebTextView.setDefaultSelection(); 5303 } 5304 return true; 5305 } 5306 clearTextEntry(); 5307 nativeShowCursorTimed(); 5308 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5309 return true; 5310 } 5311 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5312 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5313 nativeCursorNodePointer()); 5314 return true; 5315 } 5316 } 5317 5318 // TODO: should we pass all the keys to DOM or check the meta tag 5319 if (nativeCursorWantsKeyEvents() || true) { 5320 // pass the key to DOM 5321 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5322 // return true as DOM handles the key 5323 return true; 5324 } 5325 5326 // Bubble up the key event as WebView doesn't handle it 5327 return false; 5328 } 5329 5330 /* 5331 * Enter selecting text mode, and see if CAB should be shown. 5332 * Returns true if the WebView is now in 5333 * selecting text mode (including if it was already in that mode, and this 5334 * method did nothing). 5335 */ 5336 private boolean setUpSelect(boolean selectWord, int x, int y) { 5337 if (0 == mNativeClass) return false; // client isn't initialized 5338 if (inFullScreenMode()) return false; 5339 if (mSelectingText) return true; 5340 nativeResetSelection(); 5341 if (selectWord && !nativeWordSelection(x, y)) { 5342 selectionDone(); 5343 return false; 5344 } 5345 mSelectCallback = new SelectActionModeCallback(); 5346 mSelectCallback.setWebView(this); 5347 if (startActionMode(mSelectCallback) == null) { 5348 // There is no ActionMode, so do not allow the user to modify a 5349 // selection. 5350 selectionDone(); 5351 return false; 5352 } 5353 mExtendSelection = false; 5354 mSelectingText = mDrawSelectionPointer = true; 5355 // don't let the picture change during text selection 5356 WebViewCore.pauseUpdatePicture(mWebViewCore); 5357 if (nativeHasCursorNode()) { 5358 Rect rect = nativeCursorNodeBounds(); 5359 mSelectX = contentToViewX(rect.left); 5360 mSelectY = contentToViewY(rect.top); 5361 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5362 mSelectX = mScrollX + mLastTouchX; 5363 mSelectY = mScrollY + mLastTouchY; 5364 } else { 5365 mSelectX = mScrollX + getViewWidth() / 2; 5366 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5367 } 5368 nativeHideCursor(); 5369 mMinAutoScrollX = 0; 5370 mMaxAutoScrollX = getViewWidth(); 5371 mMinAutoScrollY = 0; 5372 mMaxAutoScrollY = getViewHeightWithTitle(); 5373 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 5374 viewToContentY(mSelectY), mScrollingLayerRect, 5375 mScrollingLayerBounds); 5376 if (mScrollingLayer != 0) { 5377 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5378 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5379 contentToViewX(mScrollingLayerBounds.left)); 5380 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5381 contentToViewX(mScrollingLayerBounds.right)); 5382 } 5383 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5384 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5385 contentToViewY(mScrollingLayerBounds.top)); 5386 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5387 contentToViewY(mScrollingLayerBounds.bottom)); 5388 } 5389 } 5390 mMinAutoScrollX += SELECT_SCROLL; 5391 mMaxAutoScrollX -= SELECT_SCROLL; 5392 mMinAutoScrollY += SELECT_SCROLL; 5393 mMaxAutoScrollY -= SELECT_SCROLL; 5394 return true; 5395 } 5396 5397 /** 5398 * Use this method to put the WebView into text selection mode. 5399 * Do not rely on this functionality; it will be deprecated in the future. 5400 * @deprecated This method is now obsolete. 5401 */ 5402 @Deprecated 5403 public void emulateShiftHeld() { 5404 checkThread(); 5405 setUpSelect(false, 0, 0); 5406 } 5407 5408 /** 5409 * Select all of the text in this WebView. 5410 * 5411 * @hide pending API council approval. 5412 */ 5413 public void selectAll() { 5414 if (0 == mNativeClass) return; // client isn't initialized 5415 if (inFullScreenMode()) return; 5416 if (!mSelectingText) { 5417 // retrieve a point somewhere within the text 5418 Point select = nativeSelectableText(); 5419 if (!selectText(select.x, select.y)) return; 5420 } 5421 nativeSelectAll(); 5422 mDrawSelectionPointer = false; 5423 mExtendSelection = true; 5424 invalidate(); 5425 } 5426 5427 /** 5428 * Called when the selection has been removed. 5429 */ 5430 void selectionDone() { 5431 if (mSelectingText) { 5432 mSelectingText = false; 5433 // finish is idempotent, so this is fine even if selectionDone was 5434 // called by mSelectCallback.onDestroyActionMode 5435 mSelectCallback.finish(); 5436 mSelectCallback = null; 5437 WebViewCore.resumePriority(); 5438 WebViewCore.resumeUpdatePicture(mWebViewCore); 5439 invalidate(); // redraw without selection 5440 mAutoScrollX = 0; 5441 mAutoScrollY = 0; 5442 mSentAutoScrollMessage = false; 5443 } 5444 } 5445 5446 /** 5447 * Copy the selection to the clipboard 5448 * 5449 * @hide pending API council approval. 5450 */ 5451 public boolean copySelection() { 5452 boolean copiedSomething = false; 5453 String selection = getSelection(); 5454 if (selection != null && selection != "") { 5455 if (DebugFlags.WEB_VIEW) { 5456 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5457 } 5458 Toast.makeText(mContext 5459 , com.android.internal.R.string.text_copied 5460 , Toast.LENGTH_SHORT).show(); 5461 copiedSomething = true; 5462 ClipboardManager cm = (ClipboardManager)getContext() 5463 .getSystemService(Context.CLIPBOARD_SERVICE); 5464 cm.setText(selection); 5465 } 5466 invalidate(); // remove selection region and pointer 5467 return copiedSomething; 5468 } 5469 5470 /** 5471 * @hide pending API Council approval. 5472 */ 5473 public SearchBox getSearchBox() { 5474 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5475 return null; 5476 } 5477 return mWebViewCore.getBrowserFrame().getSearchBox(); 5478 } 5479 5480 /** 5481 * Returns the currently highlighted text as a string. 5482 */ 5483 String getSelection() { 5484 if (mNativeClass == 0) return ""; 5485 return nativeGetSelection(); 5486 } 5487 5488 @Override 5489 protected void onAttachedToWindow() { 5490 super.onAttachedToWindow(); 5491 if (hasWindowFocus()) setActive(true); 5492 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5493 if (mGlobalLayoutListener == null) { 5494 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5495 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5496 } 5497 if (mScrollChangedListener == null) { 5498 mScrollChangedListener = new InnerScrollChangedListener(); 5499 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5500 } 5501 5502 addAccessibilityApisToJavaScript(); 5503 5504 mTouchEventQueue.reset(); 5505 } 5506 5507 @Override 5508 protected void onDetachedFromWindow() { 5509 clearHelpers(); 5510 mZoomManager.dismissZoomPicker(); 5511 if (hasWindowFocus()) setActive(false); 5512 5513 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5514 if (mGlobalLayoutListener != null) { 5515 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5516 mGlobalLayoutListener = null; 5517 } 5518 if (mScrollChangedListener != null) { 5519 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5520 mScrollChangedListener = null; 5521 } 5522 5523 removeAccessibilityApisFromJavaScript(); 5524 5525 super.onDetachedFromWindow(); 5526 } 5527 5528 @Override 5529 protected void onVisibilityChanged(View changedView, int visibility) { 5530 super.onVisibilityChanged(changedView, visibility); 5531 // The zoomManager may be null if the webview is created from XML that 5532 // specifies the view's visibility param as not visible (see http://b/2794841) 5533 if (visibility != View.VISIBLE && mZoomManager != null) { 5534 mZoomManager.dismissZoomPicker(); 5535 } 5536 } 5537 5538 /** 5539 * @deprecated WebView no longer needs to implement 5540 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5541 */ 5542 @Deprecated 5543 public void onChildViewAdded(View parent, View child) {} 5544 5545 /** 5546 * @deprecated WebView no longer needs to implement 5547 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5548 */ 5549 @Deprecated 5550 public void onChildViewRemoved(View p, View child) {} 5551 5552 /** 5553 * @deprecated WebView should not have implemented 5554 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5555 */ 5556 @Deprecated 5557 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5558 } 5559 5560 void setActive(boolean active) { 5561 if (active) { 5562 if (hasFocus()) { 5563 // If our window regained focus, and we have focus, then begin 5564 // drawing the cursor ring 5565 mDrawCursorRing = true; 5566 setFocusControllerActive(true); 5567 if (mNativeClass != 0) { 5568 recordButtons(null, true, false, true); 5569 } 5570 } else { 5571 if (!inEditingMode()) { 5572 // If our window gained focus, but we do not have it, do not 5573 // draw the cursor ring. 5574 mDrawCursorRing = false; 5575 setFocusControllerActive(false); 5576 } 5577 // We do not call recordButtons here because we assume 5578 // that when we lost focus, or window focus, it got called with 5579 // false for the first parameter 5580 } 5581 } else { 5582 if (!mZoomManager.isZoomPickerVisible()) { 5583 /* 5584 * The external zoom controls come in their own window, so our 5585 * window loses focus. Our policy is to not draw the cursor ring 5586 * if our window is not focused, but this is an exception since 5587 * the user can still navigate the web page with the zoom 5588 * controls showing. 5589 */ 5590 mDrawCursorRing = false; 5591 } 5592 mKeysPressed.clear(); 5593 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5594 mTouchMode = TOUCH_DONE_MODE; 5595 if (mNativeClass != 0) { 5596 recordButtons(null, false, false, true); 5597 } 5598 setFocusControllerActive(false); 5599 } 5600 invalidate(); 5601 } 5602 5603 // To avoid drawing the cursor ring, and remove the TextView when our window 5604 // loses focus. 5605 @Override 5606 public void onWindowFocusChanged(boolean hasWindowFocus) { 5607 setActive(hasWindowFocus); 5608 if (hasWindowFocus) { 5609 JWebCoreJavaBridge.setActiveWebView(this); 5610 if (mPictureUpdatePausedForFocusChange) { 5611 WebViewCore.resumeUpdatePicture(mWebViewCore); 5612 mPictureUpdatePausedForFocusChange = false; 5613 } 5614 } else { 5615 JWebCoreJavaBridge.removeActiveWebView(this); 5616 final WebSettings settings = getSettings(); 5617 if (settings != null && settings.enableSmoothTransition() && 5618 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5619 WebViewCore.pauseUpdatePicture(mWebViewCore); 5620 mPictureUpdatePausedForFocusChange = true; 5621 } 5622 } 5623 super.onWindowFocusChanged(hasWindowFocus); 5624 } 5625 5626 /* 5627 * Pass a message to WebCore Thread, telling the WebCore::Page's 5628 * FocusController to be "inactive" so that it will 5629 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5630 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5631 */ 5632 /* package */ void setFocusControllerActive(boolean active) { 5633 if (mWebViewCore == null) return; 5634 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5635 // Need to send this message after the document regains focus. 5636 if (active && mListBoxMessage != null) { 5637 mWebViewCore.sendMessage(mListBoxMessage); 5638 mListBoxMessage = null; 5639 } 5640 } 5641 5642 @Override 5643 protected void onFocusChanged(boolean focused, int direction, 5644 Rect previouslyFocusedRect) { 5645 if (DebugFlags.WEB_VIEW) { 5646 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5647 } 5648 if (focused) { 5649 // When we regain focus, if we have window focus, resume drawing 5650 // the cursor ring 5651 if (hasWindowFocus()) { 5652 mDrawCursorRing = true; 5653 if (mNativeClass != 0) { 5654 recordButtons(null, true, false, true); 5655 } 5656 setFocusControllerActive(true); 5657 //} else { 5658 // The WebView has gained focus while we do not have 5659 // windowfocus. When our window lost focus, we should have 5660 // called recordButtons(false...) 5661 } 5662 } else { 5663 // When we lost focus, unless focus went to the TextView (which is 5664 // true if we are in editing mode), stop drawing the cursor ring. 5665 if (!inEditingMode()) { 5666 mDrawCursorRing = false; 5667 if (mNativeClass != 0) { 5668 recordButtons(null, false, false, true); 5669 } 5670 setFocusControllerActive(false); 5671 } 5672 mKeysPressed.clear(); 5673 } 5674 5675 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5676 } 5677 5678 void setGLRectViewport() { 5679 // Use the getGlobalVisibleRect() to get the intersection among the parents 5680 // visible == false means we're clipped - send a null rect down to indicate that 5681 // we should not draw 5682 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5683 if (visible) { 5684 // Then need to invert the Y axis, just for GL 5685 View rootView = getRootView(); 5686 int rootViewHeight = rootView.getHeight(); 5687 mViewRectViewport.set(mGLRectViewport); 5688 int savedWebViewBottom = mGLRectViewport.bottom; 5689 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5690 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5691 mGLViewportEmpty = false; 5692 } else { 5693 mGLViewportEmpty = true; 5694 } 5695 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5696 mGLViewportEmpty ? null : mViewRectViewport); 5697 } 5698 5699 /** 5700 * @hide 5701 */ 5702 @Override 5703 protected boolean setFrame(int left, int top, int right, int bottom) { 5704 boolean changed = super.setFrame(left, top, right, bottom); 5705 if (!changed && mHeightCanMeasure) { 5706 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5707 // in WebViewCore after we get the first layout. We do call 5708 // requestLayout() when we get contentSizeChanged(). But the View 5709 // system won't call onSizeChanged if the dimension is not changed. 5710 // In this case, we need to call sendViewSizeZoom() explicitly to 5711 // notify the WebKit about the new dimensions. 5712 sendViewSizeZoom(false); 5713 } 5714 setGLRectViewport(); 5715 return changed; 5716 } 5717 5718 @Override 5719 protected void onSizeChanged(int w, int h, int ow, int oh) { 5720 super.onSizeChanged(w, h, ow, oh); 5721 5722 // adjust the max viewport width depending on the view dimensions. This 5723 // is to ensure the scaling is not going insane. So do not shrink it if 5724 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5725 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5726 if (newMaxViewportWidth > sMaxViewportWidth) { 5727 sMaxViewportWidth = newMaxViewportWidth; 5728 } 5729 5730 mZoomManager.onSizeChanged(w, h, ow, oh); 5731 5732 if (mLoadedPicture != null && mDelaySetPicture == null) { 5733 // Size changes normally result in a new picture 5734 // Re-set the loaded picture to simulate that 5735 // However, do not update the base layer as that hasn't changed 5736 setNewPicture(mLoadedPicture, false); 5737 } 5738 } 5739 5740 @Override 5741 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5742 super.onScrollChanged(l, t, oldl, oldt); 5743 if (!mInOverScrollMode) { 5744 sendOurVisibleRect(); 5745 // update WebKit if visible title bar height changed. The logic is same 5746 // as getVisibleTitleHeightImpl. 5747 int titleHeight = getTitleHeight(); 5748 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5749 sendViewSizeZoom(false); 5750 } 5751 } 5752 } 5753 5754 @Override 5755 public boolean dispatchKeyEvent(KeyEvent event) { 5756 switch (event.getAction()) { 5757 case KeyEvent.ACTION_DOWN: 5758 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5759 break; 5760 case KeyEvent.ACTION_MULTIPLE: 5761 // Always accept the action. 5762 break; 5763 case KeyEvent.ACTION_UP: 5764 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5765 if (location == -1) { 5766 // We did not receive the key down for this key, so do not 5767 // handle the key up. 5768 return false; 5769 } else { 5770 // We did receive the key down. Handle the key up, and 5771 // remove it from our pressed keys. 5772 mKeysPressed.remove(location); 5773 } 5774 break; 5775 default: 5776 // Accept the action. This should not happen, unless a new 5777 // action is added to KeyEvent. 5778 break; 5779 } 5780 if (inEditingMode() && mWebTextView.isFocused()) { 5781 // Ensure that the WebTextView gets the event, even if it does 5782 // not currently have a bounds. 5783 return mWebTextView.dispatchKeyEvent(event); 5784 } else { 5785 return super.dispatchKeyEvent(event); 5786 } 5787 } 5788 5789 /* 5790 * Here is the snap align logic: 5791 * 1. If it starts nearly horizontally or vertically, snap align; 5792 * 2. If there is a dramitic direction change, let it go; 5793 * 5794 * Adjustable parameters. Angle is the radians on a unit circle, limited 5795 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5796 */ 5797 private static final float HSLOPE_TO_START_SNAP = .25f; 5798 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5799 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5800 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5801 /* 5802 * These values are used to influence the average angle when entering 5803 * snap mode. If is is the first movement entering snap, we set the average 5804 * to the appropriate ideal. If the user is entering into snap after the 5805 * first movement, then we average the average angle with these values. 5806 */ 5807 private static final float ANGLE_VERT = 2f; 5808 private static final float ANGLE_HORIZ = 0f; 5809 /* 5810 * The modified moving average weight. 5811 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5812 */ 5813 private static final float MMA_WEIGHT_N = 5; 5814 5815 private boolean hitFocusedPlugin(int contentX, int contentY) { 5816 if (DebugFlags.WEB_VIEW) { 5817 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5818 Rect r = nativeFocusNodeBounds(); 5819 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5820 + ", " + r.right + ", " + r.bottom + ")"); 5821 } 5822 return nativeFocusIsPlugin() 5823 && nativeFocusNodeBounds().contains(contentX, contentY); 5824 } 5825 5826 private boolean shouldForwardTouchEvent() { 5827 if (mFullScreenHolder != null) return true; 5828 if (mBlockWebkitViewMessages) return false; 5829 return mForwardTouchEvents 5830 && !mSelectingText 5831 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5832 && mPreventDefault != PREVENT_DEFAULT_NO; 5833 } 5834 5835 private boolean inFullScreenMode() { 5836 return mFullScreenHolder != null; 5837 } 5838 5839 private void dismissFullScreenMode() { 5840 if (inFullScreenMode()) { 5841 mFullScreenHolder.hide(); 5842 mFullScreenHolder = null; 5843 } 5844 } 5845 5846 void onPinchToZoomAnimationStart() { 5847 // cancel the single touch handling 5848 cancelTouch(); 5849 onZoomAnimationStart(); 5850 } 5851 5852 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5853 onZoomAnimationEnd(); 5854 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5855 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5856 // as it may trigger the unwanted fling. 5857 mTouchMode = TOUCH_PINCH_DRAG; 5858 mConfirmMove = true; 5859 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5860 } 5861 5862 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5863 // layer is found. 5864 private void startScrollingLayer(float x, float y) { 5865 int contentX = viewToContentX((int) x + mScrollX); 5866 int contentY = viewToContentY((int) y + mScrollY); 5867 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5868 mScrollingLayerRect, mScrollingLayerBounds); 5869 if (mScrollingLayer != 0) { 5870 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5871 } 5872 } 5873 5874 // 1/(density * density) used to compute the distance between points. 5875 // Computed in init(). 5876 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5877 5878 // The distance between two points reported in onTouchEvent scaled by the 5879 // density of the screen. 5880 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5881 5882 @Override 5883 public boolean onHoverEvent(MotionEvent event) { 5884 if (mNativeClass == 0) { 5885 return false; 5886 } 5887 WebViewCore.CursorData data = cursorDataNoPosition(); 5888 data.mX = viewToContentX((int) event.getX() + mScrollX); 5889 data.mY = viewToContentY((int) event.getY() + mScrollY); 5890 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5891 return true; 5892 } 5893 5894 @Override 5895 public boolean onTouchEvent(MotionEvent ev) { 5896 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5897 return false; 5898 } 5899 5900 if (DebugFlags.WEB_VIEW) { 5901 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5902 + " mTouchMode=" + mTouchMode 5903 + " numPointers=" + ev.getPointerCount()); 5904 } 5905 5906 // If WebKit wasn't interested in this multitouch gesture, enqueue 5907 // the event for handling directly rather than making the round trip 5908 // to WebKit and back. 5909 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5910 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5911 } else { 5912 mTouchEventQueue.enqueueTouchEvent(ev); 5913 } 5914 5915 // Since all events are handled asynchronously, we always want the gesture stream. 5916 return true; 5917 } 5918 5919 private float calculateDragAngle(int dx, int dy) { 5920 dx = Math.abs(dx); 5921 dy = Math.abs(dy); 5922 return (float) Math.atan2(dy, dx); 5923 } 5924 5925 /* 5926 * Common code for single touch and multi-touch. 5927 * (x, y) denotes current focus point, which is the touch point for single touch 5928 * and the middle point for multi-touch. 5929 */ 5930 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5931 long eventTime = ev.getEventTime(); 5932 5933 // Due to the touch screen edge effect, a touch closer to the edge 5934 // always snapped to the edge. As getViewWidth() can be different from 5935 // getWidth() due to the scrollbar, adjusting the point to match 5936 // getViewWidth(). Same applied to the height. 5937 x = Math.min(x, getViewWidth() - 1); 5938 y = Math.min(y, getViewHeightWithTitle() - 1); 5939 5940 int deltaX = mLastTouchX - x; 5941 int deltaY = mLastTouchY - y; 5942 int contentX = viewToContentX(x + mScrollX); 5943 int contentY = viewToContentY(y + mScrollY); 5944 5945 switch (action) { 5946 case MotionEvent.ACTION_DOWN: { 5947 mPreventDefault = PREVENT_DEFAULT_NO; 5948 mConfirmMove = false; 5949 mInitialHitTestResult = null; 5950 if (!mScroller.isFinished()) { 5951 // stop the current scroll animation, but if this is 5952 // the start of a fling, allow it to add to the current 5953 // fling's velocity 5954 mScroller.abortAnimation(); 5955 mTouchMode = TOUCH_DRAG_START_MODE; 5956 mConfirmMove = true; 5957 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5958 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5959 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5960 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 5961 removeTouchHighlight(); 5962 } 5963 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5964 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5965 } else { 5966 // commit the short press action for the previous tap 5967 doShortPress(); 5968 mTouchMode = TOUCH_INIT_MODE; 5969 mDeferTouchProcess = !mBlockWebkitViewMessages 5970 && (!inFullScreenMode() && mForwardTouchEvents) 5971 ? hitFocusedPlugin(contentX, contentY) 5972 : false; 5973 } 5974 } else { // the normal case 5975 mTouchMode = TOUCH_INIT_MODE; 5976 mDeferTouchProcess = !mBlockWebkitViewMessages 5977 && (!inFullScreenMode() && mForwardTouchEvents) 5978 ? hitFocusedPlugin(contentX, contentY) 5979 : false; 5980 if (!mBlockWebkitViewMessages) { 5981 mWebViewCore.sendMessage( 5982 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5983 } 5984 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 5985 TouchHighlightData data = new TouchHighlightData(); 5986 data.mX = contentX; 5987 data.mY = contentY; 5988 data.mNativeLayerRect = new Rect(); 5989 data.mNativeLayer = nativeScrollableLayer( 5990 contentX, contentY, data.mNativeLayerRect, null); 5991 data.mSlop = viewToContentDimension(mNavSlop); 5992 mTouchHighlightRegion.setEmpty(); 5993 if (!mBlockWebkitViewMessages) { 5994 mTouchHighlightRequested = System.currentTimeMillis(); 5995 mWebViewCore.sendMessageAtFrontOfQueue( 5996 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data); 5997 } 5998 if (DEBUG_TOUCH_HIGHLIGHT) { 5999 if (getSettings().getNavDump()) { 6000 mTouchHighlightX = (int) x + mScrollX; 6001 mTouchHighlightY = (int) y + mScrollY; 6002 mPrivateHandler.postDelayed(new Runnable() { 6003 public void run() { 6004 mTouchHighlightX = mTouchHighlightY = 0; 6005 invalidate(); 6006 } 6007 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6008 } 6009 } 6010 } 6011 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6012 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6013 (eventTime - mLastTouchUpTime), eventTime); 6014 } 6015 if (mSelectingText) { 6016 mDrawSelectionPointer = false; 6017 mSelectionStarted = nativeStartSelection(contentX, contentY); 6018 if (DebugFlags.WEB_VIEW) { 6019 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6020 } 6021 invalidate(); 6022 } 6023 } 6024 // Trigger the link 6025 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6026 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6027 mPrivateHandler.sendEmptyMessageDelayed( 6028 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6029 mPrivateHandler.sendEmptyMessageDelayed( 6030 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6031 if (inFullScreenMode() || mDeferTouchProcess) { 6032 mPreventDefault = PREVENT_DEFAULT_YES; 6033 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6034 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6035 } else { 6036 mPreventDefault = PREVENT_DEFAULT_NO; 6037 } 6038 // pass the touch events from UI thread to WebCore thread 6039 if (shouldForwardTouchEvent()) { 6040 TouchEventData ted = new TouchEventData(); 6041 ted.mAction = action; 6042 ted.mIds = new int[1]; 6043 ted.mIds[0] = ev.getPointerId(0); 6044 ted.mPoints = new Point[1]; 6045 ted.mPoints[0] = new Point(contentX, contentY); 6046 ted.mPointsInView = new Point[1]; 6047 ted.mPointsInView[0] = new Point(x, y); 6048 ted.mMetaState = ev.getMetaState(); 6049 ted.mReprocess = mDeferTouchProcess; 6050 ted.mNativeLayer = nativeScrollableLayer( 6051 contentX, contentY, ted.mNativeLayerRect, null); 6052 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6053 mTouchEventQueue.preQueueTouchEventData(ted); 6054 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6055 if (mDeferTouchProcess) { 6056 // still needs to set them for compute deltaX/Y 6057 mLastTouchX = x; 6058 mLastTouchY = y; 6059 break; 6060 } 6061 if (!inFullScreenMode()) { 6062 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6063 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6064 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6065 action, 0), TAP_TIMEOUT); 6066 } 6067 } 6068 } 6069 startTouch(x, y, eventTime); 6070 break; 6071 } 6072 case MotionEvent.ACTION_MOVE: { 6073 boolean firstMove = false; 6074 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6075 >= mTouchSlopSquare) { 6076 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6077 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6078 mConfirmMove = true; 6079 firstMove = true; 6080 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6081 mTouchMode = TOUCH_INIT_MODE; 6082 } 6083 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6084 removeTouchHighlight(); 6085 } 6086 } 6087 // pass the touch events from UI thread to WebCore thread 6088 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6089 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6090 TouchEventData ted = new TouchEventData(); 6091 ted.mAction = action; 6092 ted.mIds = new int[1]; 6093 ted.mIds[0] = ev.getPointerId(0); 6094 ted.mPoints = new Point[1]; 6095 ted.mPoints[0] = new Point(contentX, contentY); 6096 ted.mPointsInView = new Point[1]; 6097 ted.mPointsInView[0] = new Point(x, y); 6098 ted.mMetaState = ev.getMetaState(); 6099 ted.mReprocess = mDeferTouchProcess; 6100 ted.mNativeLayer = mScrollingLayer; 6101 ted.mNativeLayerRect.set(mScrollingLayerRect); 6102 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6103 mTouchEventQueue.preQueueTouchEventData(ted); 6104 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6105 mLastSentTouchTime = eventTime; 6106 if (mDeferTouchProcess) { 6107 break; 6108 } 6109 if (firstMove && !inFullScreenMode()) { 6110 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6111 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6112 action, 0), TAP_TIMEOUT); 6113 } 6114 } 6115 if (mTouchMode == TOUCH_DONE_MODE 6116 || mPreventDefault == PREVENT_DEFAULT_YES) { 6117 // no dragging during scroll zoom animation, or when prevent 6118 // default is yes 6119 break; 6120 } 6121 if (mVelocityTracker == null) { 6122 Log.e(LOGTAG, "Got null mVelocityTracker when " 6123 + "mPreventDefault = " + mPreventDefault 6124 + " mDeferTouchProcess = " + mDeferTouchProcess 6125 + " mTouchMode = " + mTouchMode); 6126 } else { 6127 mVelocityTracker.addMovement(ev); 6128 } 6129 if (mSelectingText && mSelectionStarted) { 6130 if (DebugFlags.WEB_VIEW) { 6131 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6132 } 6133 ViewParent parent = getParent(); 6134 if (parent != null) { 6135 parent.requestDisallowInterceptTouchEvent(true); 6136 } 6137 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6138 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6139 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6140 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6141 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6142 && !mSentAutoScrollMessage) { 6143 mSentAutoScrollMessage = true; 6144 mPrivateHandler.sendEmptyMessageDelayed( 6145 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6146 } 6147 if (deltaX != 0 || deltaY != 0) { 6148 nativeExtendSelection(contentX, contentY); 6149 invalidate(); 6150 } 6151 break; 6152 } 6153 6154 if (mTouchMode != TOUCH_DRAG_MODE && 6155 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6156 6157 if (!mConfirmMove) { 6158 break; 6159 } 6160 6161 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6162 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6163 // track mLastTouchTime as we may need to do fling at 6164 // ACTION_UP 6165 mLastTouchTime = eventTime; 6166 break; 6167 } 6168 6169 // Only lock dragging to one axis if we don't have a scale in progress. 6170 // Scaling implies free-roaming movement. Note this is only ever a question 6171 // if mZoomManager.supportsPanDuringZoom() is true. 6172 final ScaleGestureDetector detector = 6173 mZoomManager.getMultiTouchGestureDetector(); 6174 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6175 if (detector == null || !detector.isInProgress()) { 6176 // if it starts nearly horizontal or vertical, enforce it 6177 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6178 mSnapScrollMode = SNAP_X; 6179 mSnapPositive = deltaX > 0; 6180 mAverageAngle = ANGLE_HORIZ; 6181 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6182 mSnapScrollMode = SNAP_Y; 6183 mSnapPositive = deltaY > 0; 6184 mAverageAngle = ANGLE_VERT; 6185 } 6186 } 6187 6188 mTouchMode = TOUCH_DRAG_MODE; 6189 mLastTouchX = x; 6190 mLastTouchY = y; 6191 deltaX = 0; 6192 deltaY = 0; 6193 6194 startScrollingLayer(x, y); 6195 startDrag(); 6196 } 6197 6198 // do pan 6199 boolean done = false; 6200 boolean keepScrollBarsVisible = false; 6201 if (deltaX == 0 && deltaY == 0) { 6202 keepScrollBarsVisible = done = true; 6203 } else { 6204 mAverageAngle += 6205 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6206 / MMA_WEIGHT_N; 6207 if (mSnapScrollMode != SNAP_NONE) { 6208 if (mSnapScrollMode == SNAP_Y) { 6209 // radical change means getting out of snap mode 6210 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6211 mSnapScrollMode = SNAP_NONE; 6212 } 6213 } 6214 if (mSnapScrollMode == SNAP_X) { 6215 // radical change means getting out of snap mode 6216 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6217 mSnapScrollMode = SNAP_NONE; 6218 } 6219 } 6220 } else { 6221 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6222 mSnapScrollMode = SNAP_X; 6223 mSnapPositive = deltaX > 0; 6224 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6225 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6226 mSnapScrollMode = SNAP_Y; 6227 mSnapPositive = deltaY > 0; 6228 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6229 } 6230 } 6231 if (mSnapScrollMode != SNAP_NONE) { 6232 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6233 deltaY = 0; 6234 } else { 6235 deltaX = 0; 6236 } 6237 } 6238 mLastTouchX = x; 6239 mLastTouchY = y; 6240 if ((deltaX | deltaY) != 0) { 6241 mHeldMotionless = MOTIONLESS_FALSE; 6242 } 6243 mLastTouchTime = eventTime; 6244 } 6245 6246 doDrag(deltaX, deltaY); 6247 6248 // Turn off scrollbars when dragging a layer. 6249 if (keepScrollBarsVisible && 6250 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6251 if (mHeldMotionless != MOTIONLESS_TRUE) { 6252 mHeldMotionless = MOTIONLESS_TRUE; 6253 invalidate(); 6254 } 6255 // keep the scrollbar on the screen even there is no scroll 6256 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6257 false); 6258 // return false to indicate that we can't pan out of the 6259 // view space 6260 return !done; 6261 } 6262 break; 6263 } 6264 case MotionEvent.ACTION_UP: { 6265 if (!isFocused()) requestFocus(); 6266 // pass the touch events from UI thread to WebCore thread 6267 if (shouldForwardTouchEvent()) { 6268 TouchEventData ted = new TouchEventData(); 6269 ted.mIds = new int[1]; 6270 ted.mIds[0] = ev.getPointerId(0); 6271 ted.mAction = action; 6272 ted.mPoints = new Point[1]; 6273 ted.mPoints[0] = new Point(contentX, contentY); 6274 ted.mPointsInView = new Point[1]; 6275 ted.mPointsInView[0] = new Point(x, y); 6276 ted.mMetaState = ev.getMetaState(); 6277 ted.mReprocess = mDeferTouchProcess; 6278 ted.mNativeLayer = mScrollingLayer; 6279 ted.mNativeLayerRect.set(mScrollingLayerRect); 6280 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6281 mTouchEventQueue.preQueueTouchEventData(ted); 6282 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6283 } 6284 mLastTouchUpTime = eventTime; 6285 if (mSentAutoScrollMessage) { 6286 mAutoScrollX = mAutoScrollY = 0; 6287 } 6288 switch (mTouchMode) { 6289 case TOUCH_DOUBLE_TAP_MODE: // double tap 6290 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6291 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6292 if (inFullScreenMode() || mDeferTouchProcess) { 6293 TouchEventData ted = new TouchEventData(); 6294 ted.mIds = new int[1]; 6295 ted.mIds[0] = ev.getPointerId(0); 6296 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6297 ted.mPoints = new Point[1]; 6298 ted.mPoints[0] = new Point(contentX, contentY); 6299 ted.mPointsInView = new Point[1]; 6300 ted.mPointsInView[0] = new Point(x, y); 6301 ted.mMetaState = ev.getMetaState(); 6302 ted.mReprocess = mDeferTouchProcess; 6303 ted.mNativeLayer = nativeScrollableLayer( 6304 contentX, contentY, 6305 ted.mNativeLayerRect, null); 6306 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6307 mTouchEventQueue.preQueueTouchEventData(ted); 6308 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6309 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6310 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6311 mTouchMode = TOUCH_DONE_MODE; 6312 } 6313 break; 6314 case TOUCH_INIT_MODE: // tap 6315 case TOUCH_SHORTPRESS_START_MODE: 6316 case TOUCH_SHORTPRESS_MODE: 6317 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6318 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6319 if (mConfirmMove) { 6320 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6321 " WebCore's response for touch down."); 6322 if (mPreventDefault != PREVENT_DEFAULT_YES 6323 && (computeMaxScrollX() > 0 6324 || computeMaxScrollY() > 0)) { 6325 // If the user has performed a very quick touch 6326 // sequence it is possible that we may get here 6327 // before WebCore has had a chance to process the events. 6328 // In this case, any call to preventDefault in the 6329 // JS touch handler will not have been executed yet. 6330 // Hence we will see both the UI (now) and WebCore 6331 // (when context switches) handling the event, 6332 // regardless of whether the web developer actually 6333 // doeses preventDefault in their touch handler. This 6334 // is the nature of our asynchronous touch model. 6335 6336 // we will not rewrite drag code here, but we 6337 // will try fling if it applies. 6338 WebViewCore.reducePriority(); 6339 // to get better performance, pause updating the 6340 // picture 6341 WebViewCore.pauseUpdatePicture(mWebViewCore); 6342 // fall through to TOUCH_DRAG_MODE 6343 } else { 6344 // WebKit may consume the touch event and modify 6345 // DOM. drawContentPicture() will be called with 6346 // animateSroll as true for better performance. 6347 // Force redraw in high-quality. 6348 invalidate(); 6349 break; 6350 } 6351 } else { 6352 if (mSelectingText) { 6353 // tapping on selection or controls does nothing 6354 if (!nativeHitSelection(contentX, contentY)) { 6355 selectionDone(); 6356 } 6357 break; 6358 } 6359 // only trigger double tap if the WebView is 6360 // scalable 6361 if (mTouchMode == TOUCH_INIT_MODE 6362 && (canZoomIn() || canZoomOut())) { 6363 mPrivateHandler.sendEmptyMessageDelayed( 6364 RELEASE_SINGLE_TAP, ViewConfiguration 6365 .getDoubleTapTimeout()); 6366 } else { 6367 doShortPress(); 6368 } 6369 break; 6370 } 6371 case TOUCH_DRAG_MODE: 6372 case TOUCH_DRAG_LAYER_MODE: 6373 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6374 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6375 // if the user waits a while w/o moving before the 6376 // up, we don't want to do a fling 6377 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6378 if (mVelocityTracker == null) { 6379 Log.e(LOGTAG, "Got null mVelocityTracker when " 6380 + "mPreventDefault = " 6381 + mPreventDefault 6382 + " mDeferTouchProcess = " 6383 + mDeferTouchProcess); 6384 } else { 6385 mVelocityTracker.addMovement(ev); 6386 } 6387 // set to MOTIONLESS_IGNORE so that it won't keep 6388 // removing and sending message in 6389 // drawCoreAndCursorRing() 6390 mHeldMotionless = MOTIONLESS_IGNORE; 6391 doFling(); 6392 break; 6393 } else { 6394 if (mScroller.springBack(mScrollX, mScrollY, 0, 6395 computeMaxScrollX(), 0, 6396 computeMaxScrollY())) { 6397 invalidate(); 6398 } 6399 } 6400 // redraw in high-quality, as we're done dragging 6401 mHeldMotionless = MOTIONLESS_TRUE; 6402 invalidate(); 6403 // fall through 6404 case TOUCH_DRAG_START_MODE: 6405 // TOUCH_DRAG_START_MODE should not happen for the real 6406 // device as we almost certain will get a MOVE. But this 6407 // is possible on emulator. 6408 mLastVelocity = 0; 6409 WebViewCore.resumePriority(); 6410 if (!mSelectingText) { 6411 WebViewCore.resumeUpdatePicture(mWebViewCore); 6412 } 6413 break; 6414 } 6415 stopTouch(); 6416 break; 6417 } 6418 case MotionEvent.ACTION_CANCEL: { 6419 if (mTouchMode == TOUCH_DRAG_MODE) { 6420 mScroller.springBack(mScrollX, mScrollY, 0, 6421 computeMaxScrollX(), 0, computeMaxScrollY()); 6422 invalidate(); 6423 } 6424 cancelWebCoreTouchEvent(contentX, contentY, false); 6425 cancelTouch(); 6426 break; 6427 } 6428 } 6429 return true; 6430 } 6431 6432 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6433 TouchEventData ted = new TouchEventData(); 6434 ted.mAction = ev.getActionMasked(); 6435 final int count = ev.getPointerCount(); 6436 ted.mIds = new int[count]; 6437 ted.mPoints = new Point[count]; 6438 ted.mPointsInView = new Point[count]; 6439 for (int c = 0; c < count; c++) { 6440 ted.mIds[c] = ev.getPointerId(c); 6441 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6442 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6443 ted.mPoints[c] = new Point(x, y); 6444 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6445 } 6446 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6447 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6448 ted.mActionIndex = ev.getActionIndex(); 6449 } 6450 ted.mMetaState = ev.getMetaState(); 6451 ted.mReprocess = true; 6452 ted.mMotionEvent = MotionEvent.obtain(ev); 6453 ted.mSequence = sequence; 6454 mTouchEventQueue.preQueueTouchEventData(ted); 6455 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6456 cancelLongPress(); 6457 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6458 } 6459 6460 void handleMultiTouchInWebView(MotionEvent ev) { 6461 if (DebugFlags.WEB_VIEW) { 6462 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6463 + " mTouchMode=" + mTouchMode 6464 + " numPointers=" + ev.getPointerCount() 6465 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6466 } 6467 6468 final ScaleGestureDetector detector = 6469 mZoomManager.getMultiTouchGestureDetector(); 6470 6471 // A few apps use WebView but don't instantiate gesture detector. 6472 // We don't need to support multi touch for them. 6473 if (detector == null) return; 6474 6475 float x = ev.getX(); 6476 float y = ev.getY(); 6477 6478 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6479 detector.onTouchEvent(ev); 6480 6481 if (detector.isInProgress()) { 6482 if (DebugFlags.WEB_VIEW) { 6483 Log.v(LOGTAG, "detector is in progress"); 6484 } 6485 mLastTouchTime = ev.getEventTime(); 6486 x = detector.getFocusX(); 6487 y = detector.getFocusY(); 6488 6489 cancelLongPress(); 6490 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6491 if (!mZoomManager.supportsPanDuringZoom()) { 6492 return; 6493 } 6494 mTouchMode = TOUCH_DRAG_MODE; 6495 if (mVelocityTracker == null) { 6496 mVelocityTracker = VelocityTracker.obtain(); 6497 } 6498 } 6499 } 6500 6501 int action = ev.getActionMasked(); 6502 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6503 cancelTouch(); 6504 action = MotionEvent.ACTION_DOWN; 6505 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6506 // set mLastTouchX/Y to the remaining points for multi-touch. 6507 mLastTouchX = Math.round(x); 6508 mLastTouchY = Math.round(y); 6509 } else if (action == MotionEvent.ACTION_MOVE) { 6510 // negative x or y indicate it is on the edge, skip it. 6511 if (x < 0 || y < 0) { 6512 return; 6513 } 6514 } 6515 6516 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6517 } 6518 6519 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6520 if (shouldForwardTouchEvent()) { 6521 if (removeEvents) { 6522 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6523 } 6524 TouchEventData ted = new TouchEventData(); 6525 ted.mIds = new int[1]; 6526 ted.mIds[0] = 0; 6527 ted.mPoints = new Point[1]; 6528 ted.mPoints[0] = new Point(x, y); 6529 ted.mPointsInView = new Point[1]; 6530 int viewX = contentToViewX(x) - mScrollX; 6531 int viewY = contentToViewY(y) - mScrollY; 6532 ted.mPointsInView[0] = new Point(viewX, viewY); 6533 ted.mAction = MotionEvent.ACTION_CANCEL; 6534 ted.mNativeLayer = nativeScrollableLayer( 6535 x, y, ted.mNativeLayerRect, null); 6536 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6537 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6538 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6539 6540 if (removeEvents) { 6541 // Mark this after sending the message above; we should 6542 // be willing to ignore the cancel event that we just sent. 6543 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6544 } 6545 } 6546 } 6547 6548 private void startTouch(float x, float y, long eventTime) { 6549 // Remember where the motion event started 6550 mStartTouchX = mLastTouchX = Math.round(x); 6551 mStartTouchY = mLastTouchY = Math.round(y); 6552 mLastTouchTime = eventTime; 6553 mVelocityTracker = VelocityTracker.obtain(); 6554 mSnapScrollMode = SNAP_NONE; 6555 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6556 ViewConfiguration.getTapTimeout()); 6557 } 6558 6559 private void startDrag() { 6560 WebViewCore.reducePriority(); 6561 // to get better performance, pause updating the picture 6562 WebViewCore.pauseUpdatePicture(mWebViewCore); 6563 nativeSetIsScrolling(true); 6564 6565 if (!mDragFromTextInput) { 6566 nativeHideCursor(); 6567 } 6568 6569 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6570 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6571 mZoomManager.invokeZoomPicker(); 6572 } 6573 } 6574 6575 private void doDrag(int deltaX, int deltaY) { 6576 if ((deltaX | deltaY) != 0) { 6577 int oldX = mScrollX; 6578 int oldY = mScrollY; 6579 int rangeX = computeMaxScrollX(); 6580 int rangeY = computeMaxScrollY(); 6581 int overscrollDistance = mOverscrollDistance; 6582 6583 // Check for the original scrolling layer in case we change 6584 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6585 // reached the edge of a layer but mScrollingLayer will be non-zero 6586 // if we initiated the drag on a layer. 6587 if (mScrollingLayer != 0) { 6588 final int contentX = viewToContentDimension(deltaX); 6589 final int contentY = viewToContentDimension(deltaY); 6590 6591 // Check the scrolling bounds to see if we will actually do any 6592 // scrolling. The rectangle is in document coordinates. 6593 final int maxX = mScrollingLayerRect.right; 6594 final int maxY = mScrollingLayerRect.bottom; 6595 final int resultX = Math.max(0, 6596 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6597 final int resultY = Math.max(0, 6598 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6599 6600 if (resultX != mScrollingLayerRect.left || 6601 resultY != mScrollingLayerRect.top) { 6602 // In case we switched to dragging the page. 6603 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6604 deltaX = contentX; 6605 deltaY = contentY; 6606 oldX = mScrollingLayerRect.left; 6607 oldY = mScrollingLayerRect.top; 6608 rangeX = maxX; 6609 rangeY = maxY; 6610 } else { 6611 // Scroll the main page if we are not going to scroll the 6612 // layer. This does not reset mScrollingLayer in case the 6613 // user changes directions and the layer can scroll the 6614 // other way. 6615 mTouchMode = TOUCH_DRAG_MODE; 6616 } 6617 } 6618 6619 if (mOverScrollGlow != null) { 6620 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6621 } 6622 6623 overScrollBy(deltaX, deltaY, oldX, oldY, 6624 rangeX, rangeY, 6625 mOverscrollDistance, mOverscrollDistance, true); 6626 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6627 invalidate(); 6628 } 6629 } 6630 mZoomManager.keepZoomPickerVisible(); 6631 } 6632 6633 private void stopTouch() { 6634 if (mScroller.isFinished() && !mSelectingText 6635 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6636 WebViewCore.resumePriority(); 6637 WebViewCore.resumeUpdatePicture(mWebViewCore); 6638 nativeSetIsScrolling(false); 6639 } 6640 6641 // we also use mVelocityTracker == null to tell us that we are 6642 // not "moving around", so we can take the slower/prettier 6643 // mode in the drawing code 6644 if (mVelocityTracker != null) { 6645 mVelocityTracker.recycle(); 6646 mVelocityTracker = null; 6647 } 6648 6649 // Release any pulled glows 6650 if (mOverScrollGlow != null) { 6651 mOverScrollGlow.releaseAll(); 6652 } 6653 } 6654 6655 private void cancelTouch() { 6656 // we also use mVelocityTracker == null to tell us that we are 6657 // not "moving around", so we can take the slower/prettier 6658 // mode in the drawing code 6659 if (mVelocityTracker != null) { 6660 mVelocityTracker.recycle(); 6661 mVelocityTracker = null; 6662 } 6663 6664 if ((mTouchMode == TOUCH_DRAG_MODE 6665 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6666 WebViewCore.resumePriority(); 6667 WebViewCore.resumeUpdatePicture(mWebViewCore); 6668 nativeSetIsScrolling(false); 6669 } 6670 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6671 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6672 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6673 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6674 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6675 removeTouchHighlight(); 6676 } 6677 mHeldMotionless = MOTIONLESS_TRUE; 6678 mTouchMode = TOUCH_DONE_MODE; 6679 nativeHideCursor(); 6680 } 6681 6682 @Override 6683 public boolean onGenericMotionEvent(MotionEvent event) { 6684 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6685 switch (event.getAction()) { 6686 case MotionEvent.ACTION_SCROLL: { 6687 final float vscroll; 6688 final float hscroll; 6689 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6690 vscroll = 0; 6691 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6692 } else { 6693 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6694 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6695 } 6696 if (hscroll != 0 || vscroll != 0) { 6697 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6698 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6699 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6700 return true; 6701 } 6702 } 6703 } 6704 } 6705 } 6706 return super.onGenericMotionEvent(event); 6707 } 6708 6709 private long mTrackballFirstTime = 0; 6710 private long mTrackballLastTime = 0; 6711 private float mTrackballRemainsX = 0.0f; 6712 private float mTrackballRemainsY = 0.0f; 6713 private int mTrackballXMove = 0; 6714 private int mTrackballYMove = 0; 6715 private boolean mSelectingText = false; 6716 private boolean mSelectionStarted = false; 6717 private boolean mExtendSelection = false; 6718 private boolean mDrawSelectionPointer = false; 6719 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6720 private static final int TRACKBALL_TIMEOUT = 200; 6721 private static final int TRACKBALL_WAIT = 100; 6722 private static final int TRACKBALL_SCALE = 400; 6723 private static final int TRACKBALL_SCROLL_COUNT = 5; 6724 private static final int TRACKBALL_MOVE_COUNT = 10; 6725 private static final int TRACKBALL_MULTIPLIER = 3; 6726 private static final int SELECT_CURSOR_OFFSET = 16; 6727 private static final int SELECT_SCROLL = 5; 6728 private int mSelectX = 0; 6729 private int mSelectY = 0; 6730 private boolean mFocusSizeChanged = false; 6731 private boolean mTrackballDown = false; 6732 private long mTrackballUpTime = 0; 6733 private long mLastCursorTime = 0; 6734 private Rect mLastCursorBounds; 6735 6736 // Set by default; BrowserActivity clears to interpret trackball data 6737 // directly for movement. Currently, the framework only passes 6738 // arrow key events, not trackball events, from one child to the next 6739 private boolean mMapTrackballToArrowKeys = true; 6740 6741 private DrawData mDelaySetPicture; 6742 private DrawData mLoadedPicture; 6743 6744 public void setMapTrackballToArrowKeys(boolean setMap) { 6745 checkThread(); 6746 mMapTrackballToArrowKeys = setMap; 6747 } 6748 6749 void resetTrackballTime() { 6750 mTrackballLastTime = 0; 6751 } 6752 6753 @Override 6754 public boolean onTrackballEvent(MotionEvent ev) { 6755 long time = ev.getEventTime(); 6756 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6757 if (ev.getY() > 0) pageDown(true); 6758 if (ev.getY() < 0) pageUp(true); 6759 return true; 6760 } 6761 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6762 if (mSelectingText) { 6763 return true; // discard press if copy in progress 6764 } 6765 mTrackballDown = true; 6766 if (mNativeClass == 0) { 6767 return false; 6768 } 6769 recordButtons(null, hasFocus() && hasWindowFocus(), true, true); 6770 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6771 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6772 nativeSelectBestAt(mLastCursorBounds); 6773 } 6774 if (DebugFlags.WEB_VIEW) { 6775 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6776 + " time=" + time 6777 + " mLastCursorTime=" + mLastCursorTime); 6778 } 6779 if (isInTouchMode()) requestFocusFromTouch(); 6780 return false; // let common code in onKeyDown at it 6781 } 6782 if (ev.getAction() == MotionEvent.ACTION_UP) { 6783 // LONG_PRESS_CENTER is set in common onKeyDown 6784 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6785 mTrackballDown = false; 6786 mTrackballUpTime = time; 6787 if (mSelectingText) { 6788 if (mExtendSelection) { 6789 copySelection(); 6790 selectionDone(); 6791 } else { 6792 mExtendSelection = true; 6793 nativeSetExtendSelection(); 6794 invalidate(); // draw the i-beam instead of the arrow 6795 } 6796 return true; // discard press if copy in progress 6797 } 6798 if (DebugFlags.WEB_VIEW) { 6799 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6800 + " time=" + time 6801 ); 6802 } 6803 return false; // let common code in onKeyUp at it 6804 } 6805 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6806 AccessibilityManager.getInstance(mContext).isEnabled()) { 6807 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6808 return false; 6809 } 6810 if (mTrackballDown) { 6811 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6812 return true; // discard move if trackball is down 6813 } 6814 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6815 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6816 return true; 6817 } 6818 // TODO: alternatively we can do panning as touch does 6819 switchOutDrawHistory(); 6820 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6821 if (DebugFlags.WEB_VIEW) { 6822 Log.v(LOGTAG, "onTrackballEvent time=" 6823 + time + " last=" + mTrackballLastTime); 6824 } 6825 mTrackballFirstTime = time; 6826 mTrackballXMove = mTrackballYMove = 0; 6827 } 6828 mTrackballLastTime = time; 6829 if (DebugFlags.WEB_VIEW) { 6830 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6831 } 6832 mTrackballRemainsX += ev.getX(); 6833 mTrackballRemainsY += ev.getY(); 6834 doTrackball(time, ev.getMetaState()); 6835 return true; 6836 } 6837 6838 void moveSelection(float xRate, float yRate) { 6839 if (mNativeClass == 0) 6840 return; 6841 int width = getViewWidth(); 6842 int height = getViewHeight(); 6843 mSelectX += xRate; 6844 mSelectY += yRate; 6845 int maxX = width + mScrollX; 6846 int maxY = height + mScrollY; 6847 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6848 , mSelectX)); 6849 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6850 , mSelectY)); 6851 if (DebugFlags.WEB_VIEW) { 6852 Log.v(LOGTAG, "moveSelection" 6853 + " mSelectX=" + mSelectX 6854 + " mSelectY=" + mSelectY 6855 + " mScrollX=" + mScrollX 6856 + " mScrollY=" + mScrollY 6857 + " xRate=" + xRate 6858 + " yRate=" + yRate 6859 ); 6860 } 6861 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6862 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6863 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6864 : 0; 6865 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6866 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6867 : 0; 6868 pinScrollBy(scrollX, scrollY, true, 0); 6869 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6870 requestRectangleOnScreen(select); 6871 invalidate(); 6872 } 6873 6874 private int scaleTrackballX(float xRate, int width) { 6875 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6876 int nextXMove = xMove; 6877 if (xMove > 0) { 6878 if (xMove > mTrackballXMove) { 6879 xMove -= mTrackballXMove; 6880 } 6881 } else if (xMove < mTrackballXMove) { 6882 xMove -= mTrackballXMove; 6883 } 6884 mTrackballXMove = nextXMove; 6885 return xMove; 6886 } 6887 6888 private int scaleTrackballY(float yRate, int height) { 6889 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6890 int nextYMove = yMove; 6891 if (yMove > 0) { 6892 if (yMove > mTrackballYMove) { 6893 yMove -= mTrackballYMove; 6894 } 6895 } else if (yMove < mTrackballYMove) { 6896 yMove -= mTrackballYMove; 6897 } 6898 mTrackballYMove = nextYMove; 6899 return yMove; 6900 } 6901 6902 private int keyCodeToSoundsEffect(int keyCode) { 6903 switch(keyCode) { 6904 case KeyEvent.KEYCODE_DPAD_UP: 6905 return SoundEffectConstants.NAVIGATION_UP; 6906 case KeyEvent.KEYCODE_DPAD_RIGHT: 6907 return SoundEffectConstants.NAVIGATION_RIGHT; 6908 case KeyEvent.KEYCODE_DPAD_DOWN: 6909 return SoundEffectConstants.NAVIGATION_DOWN; 6910 case KeyEvent.KEYCODE_DPAD_LEFT: 6911 return SoundEffectConstants.NAVIGATION_LEFT; 6912 } 6913 throw new IllegalArgumentException("keyCode must be one of " + 6914 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6915 "KEYCODE_DPAD_LEFT}."); 6916 } 6917 6918 private void doTrackball(long time, int metaState) { 6919 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6920 if (elapsed == 0) { 6921 elapsed = TRACKBALL_TIMEOUT; 6922 } 6923 float xRate = mTrackballRemainsX * 1000 / elapsed; 6924 float yRate = mTrackballRemainsY * 1000 / elapsed; 6925 int viewWidth = getViewWidth(); 6926 int viewHeight = getViewHeight(); 6927 if (mSelectingText) { 6928 if (!mDrawSelectionPointer) { 6929 // The last selection was made by touch, disabling drawing the 6930 // selection pointer. Allow the trackball to adjust the 6931 // position of the touch control. 6932 mSelectX = contentToViewX(nativeSelectionX()); 6933 mSelectY = contentToViewY(nativeSelectionY()); 6934 mDrawSelectionPointer = mExtendSelection = true; 6935 nativeSetExtendSelection(); 6936 } 6937 moveSelection(scaleTrackballX(xRate, viewWidth), 6938 scaleTrackballY(yRate, viewHeight)); 6939 mTrackballRemainsX = mTrackballRemainsY = 0; 6940 return; 6941 } 6942 float ax = Math.abs(xRate); 6943 float ay = Math.abs(yRate); 6944 float maxA = Math.max(ax, ay); 6945 if (DebugFlags.WEB_VIEW) { 6946 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6947 + " xRate=" + xRate 6948 + " yRate=" + yRate 6949 + " mTrackballRemainsX=" + mTrackballRemainsX 6950 + " mTrackballRemainsY=" + mTrackballRemainsY); 6951 } 6952 int width = mContentWidth - viewWidth; 6953 int height = mContentHeight - viewHeight; 6954 if (width < 0) width = 0; 6955 if (height < 0) height = 0; 6956 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6957 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6958 maxA = Math.max(ax, ay); 6959 int count = Math.max(0, (int) maxA); 6960 int oldScrollX = mScrollX; 6961 int oldScrollY = mScrollY; 6962 if (count > 0) { 6963 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6964 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6965 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6966 KeyEvent.KEYCODE_DPAD_RIGHT; 6967 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6968 if (DebugFlags.WEB_VIEW) { 6969 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6970 + " count=" + count 6971 + " mTrackballRemainsX=" + mTrackballRemainsX 6972 + " mTrackballRemainsY=" + mTrackballRemainsY); 6973 } 6974 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6975 for (int i = 0; i < count; i++) { 6976 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6977 } 6978 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6979 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6980 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6981 } 6982 mTrackballRemainsX = mTrackballRemainsY = 0; 6983 } 6984 if (count >= TRACKBALL_SCROLL_COUNT) { 6985 int xMove = scaleTrackballX(xRate, width); 6986 int yMove = scaleTrackballY(yRate, height); 6987 if (DebugFlags.WEB_VIEW) { 6988 Log.v(LOGTAG, "doTrackball pinScrollBy" 6989 + " count=" + count 6990 + " xMove=" + xMove + " yMove=" + yMove 6991 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6992 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6993 ); 6994 } 6995 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6996 xMove = 0; 6997 } 6998 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6999 yMove = 0; 7000 } 7001 if (xMove != 0 || yMove != 0) { 7002 pinScrollBy(xMove, yMove, true, 0); 7003 } 7004 } 7005 } 7006 7007 /** 7008 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7009 * @return Maximum horizontal scroll position within real content 7010 */ 7011 int computeMaxScrollX() { 7012 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7013 } 7014 7015 /** 7016 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7017 * @return Maximum vertical scroll position within real content 7018 */ 7019 int computeMaxScrollY() { 7020 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7021 - getViewHeightWithTitle(), 0); 7022 } 7023 7024 boolean updateScrollCoordinates(int x, int y) { 7025 int oldX = mScrollX; 7026 int oldY = mScrollY; 7027 mScrollX = x; 7028 mScrollY = y; 7029 if (oldX != mScrollX || oldY != mScrollY) { 7030 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7031 return true; 7032 } else { 7033 return false; 7034 } 7035 } 7036 7037 public void flingScroll(int vx, int vy) { 7038 checkThread(); 7039 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7040 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7041 invalidate(); 7042 } 7043 7044 private void doFling() { 7045 if (mVelocityTracker == null) { 7046 return; 7047 } 7048 int maxX = computeMaxScrollX(); 7049 int maxY = computeMaxScrollY(); 7050 7051 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7052 int vx = (int) mVelocityTracker.getXVelocity(); 7053 int vy = (int) mVelocityTracker.getYVelocity(); 7054 7055 int scrollX = mScrollX; 7056 int scrollY = mScrollY; 7057 int overscrollDistance = mOverscrollDistance; 7058 int overflingDistance = mOverflingDistance; 7059 7060 // Use the layer's scroll data if applicable. 7061 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7062 scrollX = mScrollingLayerRect.left; 7063 scrollY = mScrollingLayerRect.top; 7064 maxX = mScrollingLayerRect.right; 7065 maxY = mScrollingLayerRect.bottom; 7066 // No overscrolling for layers. 7067 overscrollDistance = overflingDistance = 0; 7068 } 7069 7070 if (mSnapScrollMode != SNAP_NONE) { 7071 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7072 vy = 0; 7073 } else { 7074 vx = 0; 7075 } 7076 } 7077 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7078 WebViewCore.resumePriority(); 7079 if (!mSelectingText) { 7080 WebViewCore.resumeUpdatePicture(mWebViewCore); 7081 } 7082 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7083 invalidate(); 7084 } 7085 return; 7086 } 7087 float currentVelocity = mScroller.getCurrVelocity(); 7088 float velocity = (float) Math.hypot(vx, vy); 7089 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7090 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7091 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7092 - Math.atan2(vy, vx))); 7093 final float circle = (float) (Math.PI) * 2.0f; 7094 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7095 vx += currentVelocity * mLastVelX / mLastVelocity; 7096 vy += currentVelocity * mLastVelY / mLastVelocity; 7097 velocity = (float) Math.hypot(vx, vy); 7098 if (DebugFlags.WEB_VIEW) { 7099 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7100 } 7101 } else if (DebugFlags.WEB_VIEW) { 7102 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7103 } 7104 } else if (DebugFlags.WEB_VIEW) { 7105 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7106 + " current=" + currentVelocity 7107 + " vx=" + vx + " vy=" + vy 7108 + " maxX=" + maxX + " maxY=" + maxY 7109 + " scrollX=" + scrollX + " scrollY=" + scrollY 7110 + " layer=" + mScrollingLayer); 7111 } 7112 7113 // Allow sloppy flings without overscrolling at the edges. 7114 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7115 vx = 0; 7116 } 7117 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7118 vy = 0; 7119 } 7120 7121 if (overscrollDistance < overflingDistance) { 7122 if ((vx > 0 && scrollX == -overscrollDistance) || 7123 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7124 vx = 0; 7125 } 7126 if ((vy > 0 && scrollY == -overscrollDistance) || 7127 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7128 vy = 0; 7129 } 7130 } 7131 7132 mLastVelX = vx; 7133 mLastVelY = vy; 7134 mLastVelocity = velocity; 7135 7136 // no horizontal overscroll if the content just fits 7137 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7138 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7139 // Duration is calculated based on velocity. With range boundaries and overscroll 7140 // we may not know how long the final animation will take. (Hence the deprecation 7141 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7142 // resumes during this effect we will take a performance hit. See computeScroll; 7143 // we resume webcore there when the animation is finished. 7144 final int time = mScroller.getDuration(); 7145 7146 // Suppress scrollbars for layer scrolling. 7147 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7148 awakenScrollBars(time); 7149 } 7150 7151 invalidate(); 7152 } 7153 7154 /** 7155 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7156 * in charge of installing this view to the view hierarchy. This view will 7157 * become visible when the user starts scrolling via touch and fade away if 7158 * the user does not interact with it. 7159 * <p/> 7160 * API version 3 introduces a built-in zoom mechanism that is shown 7161 * automatically by the MapView. This is the preferred approach for 7162 * showing the zoom UI. 7163 * 7164 * @deprecated The built-in zoom mechanism is preferred, see 7165 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7166 */ 7167 @Deprecated 7168 public View getZoomControls() { 7169 checkThread(); 7170 if (!getSettings().supportZoom()) { 7171 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7172 return null; 7173 } 7174 return mZoomManager.getExternalZoomPicker(); 7175 } 7176 7177 void dismissZoomControl() { 7178 mZoomManager.dismissZoomPicker(); 7179 } 7180 7181 float getDefaultZoomScale() { 7182 return mZoomManager.getDefaultScale(); 7183 } 7184 7185 /** 7186 * Return the overview scale of the WebView 7187 * @return The overview scale. 7188 */ 7189 float getZoomOverviewScale() { 7190 return mZoomManager.getZoomOverviewScale(); 7191 } 7192 7193 /** 7194 * @return TRUE if the WebView can be zoomed in. 7195 */ 7196 public boolean canZoomIn() { 7197 checkThread(); 7198 return mZoomManager.canZoomIn(); 7199 } 7200 7201 /** 7202 * @return TRUE if the WebView can be zoomed out. 7203 */ 7204 public boolean canZoomOut() { 7205 checkThread(); 7206 return mZoomManager.canZoomOut(); 7207 } 7208 7209 /** 7210 * Perform zoom in in the webview 7211 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7212 */ 7213 public boolean zoomIn() { 7214 checkThread(); 7215 return mZoomManager.zoomIn(); 7216 } 7217 7218 /** 7219 * Perform zoom out in the webview 7220 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7221 */ 7222 public boolean zoomOut() { 7223 checkThread(); 7224 return mZoomManager.zoomOut(); 7225 } 7226 7227 /** 7228 * This selects the best clickable target at mLastTouchX and mLastTouchY 7229 * and calls showCursorTimed on the native side 7230 */ 7231 private void updateSelection() { 7232 if (mNativeClass == 0) { 7233 return; 7234 } 7235 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7236 // mLastTouchX and mLastTouchY are the point in the current viewport 7237 int contentX = viewToContentX(mLastTouchX + mScrollX); 7238 int contentY = viewToContentY(mLastTouchY + mScrollY); 7239 int slop = viewToContentDimension(mNavSlop); 7240 Rect rect = new Rect(contentX - slop, contentY - slop, 7241 contentX + slop, contentY + slop); 7242 nativeSelectBestAt(rect); 7243 mInitialHitTestResult = hitTestResult(null); 7244 } 7245 7246 /** 7247 * Scroll the focused text field to match the WebTextView 7248 * @param xPercent New x position of the WebTextView from 0 to 1. 7249 */ 7250 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7251 if (!inEditingMode() || mWebViewCore == null) { 7252 return; 7253 } 7254 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7255 new Float(xPercent)); 7256 } 7257 7258 /** 7259 * Scroll the focused textarea vertically to match the WebTextView 7260 * @param y New y position of the WebTextView in view coordinates 7261 */ 7262 /* package */ void scrollFocusedTextInputY(int y) { 7263 if (!inEditingMode() || mWebViewCore == null) { 7264 return; 7265 } 7266 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7267 } 7268 7269 /** 7270 * Set our starting point and time for a drag from the WebTextView. 7271 */ 7272 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7273 if (!inEditingMode()) { 7274 return; 7275 } 7276 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7277 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7278 mLastTouchTime = eventTime; 7279 if (!mScroller.isFinished()) { 7280 abortAnimation(); 7281 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 7282 } 7283 mSnapScrollMode = SNAP_NONE; 7284 mVelocityTracker = VelocityTracker.obtain(); 7285 mTouchMode = TOUCH_DRAG_START_MODE; 7286 } 7287 7288 /** 7289 * Given a motion event from the WebTextView, set its location to our 7290 * coordinates, and handle the event. 7291 */ 7292 /*package*/ boolean textFieldDrag(MotionEvent event) { 7293 if (!inEditingMode()) { 7294 return false; 7295 } 7296 mDragFromTextInput = true; 7297 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7298 (float) (mWebTextView.getTop() - mScrollY)); 7299 boolean result = onTouchEvent(event); 7300 mDragFromTextInput = false; 7301 return result; 7302 } 7303 7304 /** 7305 * Due a touch up from a WebTextView. This will be handled by webkit to 7306 * change the selection. 7307 * @param event MotionEvent in the WebTextView's coordinates. 7308 */ 7309 /*package*/ void touchUpOnTextField(MotionEvent event) { 7310 if (!inEditingMode()) { 7311 return; 7312 } 7313 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7314 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7315 int slop = viewToContentDimension(mNavSlop); 7316 nativeMotionUp(x, y, slop); 7317 } 7318 7319 /** 7320 * Called when pressing the center key or trackball on a textfield. 7321 */ 7322 /*package*/ void centerKeyPressOnTextField() { 7323 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7324 nativeCursorNodePointer()); 7325 } 7326 7327 private void doShortPress() { 7328 if (mNativeClass == 0) { 7329 return; 7330 } 7331 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7332 return; 7333 } 7334 mTouchMode = TOUCH_DONE_MODE; 7335 updateSelection(); 7336 switchOutDrawHistory(); 7337 // mLastTouchX and mLastTouchY are the point in the current viewport 7338 int contentX = viewToContentX(mLastTouchX + mScrollX); 7339 int contentY = viewToContentY(mLastTouchY + mScrollY); 7340 int slop = viewToContentDimension(mNavSlop); 7341 if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) { 7342 // set mTouchHighlightRequested to 0 to cause an immediate 7343 // drawing of the touch rings 7344 mTouchHighlightRequested = 0; 7345 invalidate(mTouchHighlightRegion.getBounds()); 7346 mPrivateHandler.postDelayed(new Runnable() { 7347 @Override 7348 public void run() { 7349 removeTouchHighlight(); 7350 } 7351 }, ViewConfiguration.getPressedStateDuration()); 7352 } 7353 if (getSettings().supportTouchOnly()) { 7354 removeTouchHighlight(); 7355 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7356 // use "0" as generation id to inform WebKit to use the same x/y as 7357 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7358 touchUpData.mMoveGeneration = 0; 7359 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7360 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7361 WebViewCore.MotionUpData motionUpData = new WebViewCore 7362 .MotionUpData(); 7363 motionUpData.mFrame = nativeCacheHitFramePointer(); 7364 motionUpData.mNode = nativeCacheHitNodePointer(); 7365 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7366 motionUpData.mX = contentX; 7367 motionUpData.mY = contentY; 7368 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7369 motionUpData); 7370 } else { 7371 doMotionUp(contentX, contentY); 7372 } 7373 } 7374 7375 private void doMotionUp(int contentX, int contentY) { 7376 int slop = viewToContentDimension(mNavSlop); 7377 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7378 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7379 } 7380 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7381 playSoundEffect(SoundEffectConstants.CLICK); 7382 } 7383 } 7384 7385 /** 7386 * Returns plugin bounds if x/y in content coordinates corresponds to a 7387 * plugin. Otherwise a NULL rectangle is returned. 7388 */ 7389 Rect getPluginBounds(int x, int y) { 7390 int slop = viewToContentDimension(mNavSlop); 7391 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7392 return nativeCacheHitNodeBounds(); 7393 } else { 7394 return null; 7395 } 7396 } 7397 7398 /* 7399 * Return true if the rect (e.g. plugin) is fully visible and maximized 7400 * inside the WebView. 7401 */ 7402 boolean isRectFitOnScreen(Rect rect) { 7403 final int rectWidth = rect.width(); 7404 final int rectHeight = rect.height(); 7405 final int viewWidth = getViewWidth(); 7406 final int viewHeight = getViewHeightWithTitle(); 7407 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7408 scale = mZoomManager.computeScaleWithLimits(scale); 7409 return !mZoomManager.willScaleTriggerZoom(scale) 7410 && contentToViewX(rect.left) >= mScrollX 7411 && contentToViewX(rect.right) <= mScrollX + viewWidth 7412 && contentToViewY(rect.top) >= mScrollY 7413 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7414 } 7415 7416 /* 7417 * Maximize and center the rectangle, specified in the document coordinate 7418 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7419 * animated scroll to center it. If the zoom needs to be changed, find the 7420 * zoom center and do a smooth zoom transition. The rect is in document 7421 * coordinates 7422 */ 7423 void centerFitRect(Rect rect) { 7424 final int rectWidth = rect.width(); 7425 final int rectHeight = rect.height(); 7426 final int viewWidth = getViewWidth(); 7427 final int viewHeight = getViewHeightWithTitle(); 7428 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7429 / rectHeight); 7430 scale = mZoomManager.computeScaleWithLimits(scale); 7431 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7432 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7433 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7434 true, 0); 7435 } else { 7436 float actualScale = mZoomManager.getScale(); 7437 float oldScreenX = rect.left * actualScale - mScrollX; 7438 float rectViewX = rect.left * scale; 7439 float rectViewWidth = rectWidth * scale; 7440 float newMaxWidth = mContentWidth * scale; 7441 float newScreenX = (viewWidth - rectViewWidth) / 2; 7442 // pin the newX to the WebView 7443 if (newScreenX > rectViewX) { 7444 newScreenX = rectViewX; 7445 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7446 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7447 } 7448 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7449 / (scale - actualScale); 7450 float oldScreenY = rect.top * actualScale + getTitleHeight() 7451 - mScrollY; 7452 float rectViewY = rect.top * scale + getTitleHeight(); 7453 float rectViewHeight = rectHeight * scale; 7454 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7455 float newScreenY = (viewHeight - rectViewHeight) / 2; 7456 // pin the newY to the WebView 7457 if (newScreenY > rectViewY) { 7458 newScreenY = rectViewY; 7459 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7460 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7461 } 7462 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7463 / (scale - actualScale); 7464 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7465 mZoomManager.startZoomAnimation(scale, false); 7466 } 7467 } 7468 7469 // Called by JNI to handle a touch on a node representing an email address, 7470 // address, or phone number 7471 private void overrideLoading(String url) { 7472 mCallbackProxy.uiOverrideUrlLoading(url); 7473 } 7474 7475 @Override 7476 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7477 // FIXME: If a subwindow is showing find, and the user touches the 7478 // background window, it can steal focus. 7479 if (mFindIsUp) return false; 7480 boolean result = false; 7481 if (inEditingMode()) { 7482 result = mWebTextView.requestFocus(direction, 7483 previouslyFocusedRect); 7484 } else { 7485 result = super.requestFocus(direction, previouslyFocusedRect); 7486 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7487 // For cases such as GMail, where we gain focus from a direction, 7488 // we want to move to the first available link. 7489 // FIXME: If there are no visible links, we may not want to 7490 int fakeKeyDirection = 0; 7491 switch(direction) { 7492 case View.FOCUS_UP: 7493 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7494 break; 7495 case View.FOCUS_DOWN: 7496 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7497 break; 7498 case View.FOCUS_LEFT: 7499 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7500 break; 7501 case View.FOCUS_RIGHT: 7502 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7503 break; 7504 default: 7505 return result; 7506 } 7507 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7508 navHandledKey(fakeKeyDirection, 1, true, 0); 7509 } 7510 } 7511 } 7512 return result; 7513 } 7514 7515 @Override 7516 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7517 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7518 7519 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7520 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7521 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7522 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7523 7524 int measuredHeight = heightSize; 7525 int measuredWidth = widthSize; 7526 7527 // Grab the content size from WebViewCore. 7528 int contentHeight = contentToViewDimension(mContentHeight); 7529 int contentWidth = contentToViewDimension(mContentWidth); 7530 7531// Log.d(LOGTAG, "------- measure " + heightMode); 7532 7533 if (heightMode != MeasureSpec.EXACTLY) { 7534 mHeightCanMeasure = true; 7535 measuredHeight = contentHeight; 7536 if (heightMode == MeasureSpec.AT_MOST) { 7537 // If we are larger than the AT_MOST height, then our height can 7538 // no longer be measured and we should scroll internally. 7539 if (measuredHeight > heightSize) { 7540 measuredHeight = heightSize; 7541 mHeightCanMeasure = false; 7542 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7543 } 7544 } 7545 } else { 7546 mHeightCanMeasure = false; 7547 } 7548 if (mNativeClass != 0) { 7549 nativeSetHeightCanMeasure(mHeightCanMeasure); 7550 } 7551 // For the width, always use the given size unless unspecified. 7552 if (widthMode == MeasureSpec.UNSPECIFIED) { 7553 mWidthCanMeasure = true; 7554 measuredWidth = contentWidth; 7555 } else { 7556 if (measuredWidth < contentWidth) { 7557 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7558 } 7559 mWidthCanMeasure = false; 7560 } 7561 7562 synchronized (this) { 7563 setMeasuredDimension(measuredWidth, measuredHeight); 7564 } 7565 } 7566 7567 @Override 7568 public boolean requestChildRectangleOnScreen(View child, 7569 Rect rect, 7570 boolean immediate) { 7571 if (mNativeClass == 0) { 7572 return false; 7573 } 7574 // don't scroll while in zoom animation. When it is done, we will adjust 7575 // the necessary components (e.g., WebTextView if it is in editing mode) 7576 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7577 return false; 7578 } 7579 7580 rect.offset(child.getLeft() - child.getScrollX(), 7581 child.getTop() - child.getScrollY()); 7582 7583 Rect content = new Rect(viewToContentX(mScrollX), 7584 viewToContentY(mScrollY), 7585 viewToContentX(mScrollX + getWidth() 7586 - getVerticalScrollbarWidth()), 7587 viewToContentY(mScrollY + getViewHeightWithTitle())); 7588 content = nativeSubtractLayers(content); 7589 int screenTop = contentToViewY(content.top); 7590 int screenBottom = contentToViewY(content.bottom); 7591 int height = screenBottom - screenTop; 7592 int scrollYDelta = 0; 7593 7594 if (rect.bottom > screenBottom) { 7595 int oneThirdOfScreenHeight = height / 3; 7596 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7597 // If the rectangle is too tall to fit in the bottom two thirds 7598 // of the screen, place it at the top. 7599 scrollYDelta = rect.top - screenTop; 7600 } else { 7601 // If the rectangle will still fit on screen, we want its 7602 // top to be in the top third of the screen. 7603 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7604 } 7605 } else if (rect.top < screenTop) { 7606 scrollYDelta = rect.top - screenTop; 7607 } 7608 7609 int screenLeft = contentToViewX(content.left); 7610 int screenRight = contentToViewX(content.right); 7611 int width = screenRight - screenLeft; 7612 int scrollXDelta = 0; 7613 7614 if (rect.right > screenRight && rect.left > screenLeft) { 7615 if (rect.width() > width) { 7616 scrollXDelta += (rect.left - screenLeft); 7617 } else { 7618 scrollXDelta += (rect.right - screenRight); 7619 } 7620 } else if (rect.left < screenLeft) { 7621 scrollXDelta -= (screenLeft - rect.left); 7622 } 7623 7624 if ((scrollYDelta | scrollXDelta) != 0) { 7625 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7626 } 7627 7628 return false; 7629 } 7630 7631 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7632 String replace, int newStart, int newEnd) { 7633 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7634 arg.mReplace = replace; 7635 arg.mNewStart = newStart; 7636 arg.mNewEnd = newEnd; 7637 mTextGeneration++; 7638 arg.mTextGeneration = mTextGeneration; 7639 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7640 } 7641 7642 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7643 // check if mWebViewCore has been destroyed 7644 if (mWebViewCore == null) { 7645 return; 7646 } 7647 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7648 arg.mEvent = event; 7649 arg.mCurrentText = currentText; 7650 // Increase our text generation number, and pass it to webcore thread 7651 mTextGeneration++; 7652 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7653 // WebKit's document state is not saved until about to leave the page. 7654 // To make sure the host application, like Browser, has the up to date 7655 // document state when it goes to background, we force to save the 7656 // document state. 7657 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7658 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7659 cursorData(), 1000); 7660 } 7661 7662 /** 7663 * @hide 7664 */ 7665 public synchronized WebViewCore getWebViewCore() { 7666 return mWebViewCore; 7667 } 7668 7669 /** 7670 * Used only by TouchEventQueue to store pending touch events. 7671 */ 7672 private static class QueuedTouch { 7673 long mSequence; 7674 MotionEvent mEvent; // Optional 7675 TouchEventData mTed; // Optional 7676 7677 QueuedTouch mNext; 7678 7679 public QueuedTouch set(TouchEventData ted) { 7680 mSequence = ted.mSequence; 7681 mTed = ted; 7682 mEvent = null; 7683 mNext = null; 7684 return this; 7685 } 7686 7687 public QueuedTouch set(MotionEvent ev, long sequence) { 7688 mEvent = MotionEvent.obtain(ev); 7689 mSequence = sequence; 7690 mTed = null; 7691 mNext = null; 7692 return this; 7693 } 7694 7695 public QueuedTouch add(QueuedTouch other) { 7696 if (other.mSequence < mSequence) { 7697 other.mNext = this; 7698 return other; 7699 } 7700 7701 QueuedTouch insertAt = this; 7702 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7703 insertAt = insertAt.mNext; 7704 } 7705 other.mNext = insertAt.mNext; 7706 insertAt.mNext = other; 7707 return this; 7708 } 7709 } 7710 7711 /** 7712 * WebView handles touch events asynchronously since some events must be passed to WebKit 7713 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7714 * of which path they take to ensure that no events are ever processed out of order 7715 * by WebView. 7716 */ 7717 private class TouchEventQueue { 7718 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7719 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7720 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7721 7722 // Events waiting to be processed. 7723 private QueuedTouch mTouchEventQueue; 7724 7725 // Known events that are waiting on a response before being enqueued. 7726 private QueuedTouch mPreQueue; 7727 7728 // Pool of QueuedTouch objects saved for later use. 7729 private QueuedTouch mQueuedTouchRecycleBin; 7730 private int mQueuedTouchRecycleCount; 7731 7732 private long mLastEventTime = Long.MAX_VALUE; 7733 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7734 7735 // milliseconds until we abandon hope of getting all of a previous gesture 7736 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7737 7738 private QueuedTouch obtainQueuedTouch() { 7739 if (mQueuedTouchRecycleBin != null) { 7740 QueuedTouch result = mQueuedTouchRecycleBin; 7741 mQueuedTouchRecycleBin = result.mNext; 7742 mQueuedTouchRecycleCount--; 7743 return result; 7744 } 7745 return new QueuedTouch(); 7746 } 7747 7748 /** 7749 * Allow events with any currently missing sequence numbers to be skipped in processing. 7750 */ 7751 public void ignoreCurrentlyMissingEvents() { 7752 mIgnoreUntilSequence = mNextTouchSequence; 7753 7754 // Run any events we have available and complete, pre-queued or otherwise. 7755 runQueuedAndPreQueuedEvents(); 7756 } 7757 7758 private void runQueuedAndPreQueuedEvents() { 7759 QueuedTouch qd = mPreQueue; 7760 boolean fromPreQueue = true; 7761 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7762 handleQueuedTouch(qd); 7763 QueuedTouch recycleMe = qd; 7764 if (fromPreQueue) { 7765 mPreQueue = qd.mNext; 7766 } else { 7767 mTouchEventQueue = qd.mNext; 7768 } 7769 recycleQueuedTouch(recycleMe); 7770 mLastHandledTouchSequence++; 7771 7772 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7773 long nextQueued = mTouchEventQueue != null ? 7774 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7775 fromPreQueue = nextPre < nextQueued; 7776 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7777 } 7778 } 7779 7780 /** 7781 * Add a TouchEventData to the pre-queue. 7782 * 7783 * An event in the pre-queue is an event that we know about that 7784 * has been sent to webkit, but that we haven't received back and 7785 * enqueued into the normal touch queue yet. If webkit ever times 7786 * out and we need to ignore currently missing events, we'll run 7787 * events from the pre-queue to patch the holes. 7788 * 7789 * @param ted TouchEventData to pre-queue 7790 */ 7791 public void preQueueTouchEventData(TouchEventData ted) { 7792 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7793 if (mPreQueue == null) { 7794 mPreQueue = newTouch; 7795 } else { 7796 QueuedTouch insertionPoint = mPreQueue; 7797 while (insertionPoint.mNext != null && 7798 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7799 insertionPoint = insertionPoint.mNext; 7800 } 7801 newTouch.mNext = insertionPoint.mNext; 7802 insertionPoint.mNext = newTouch; 7803 } 7804 } 7805 7806 private void recycleQueuedTouch(QueuedTouch qd) { 7807 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7808 qd.mNext = mQueuedTouchRecycleBin; 7809 mQueuedTouchRecycleBin = qd; 7810 mQueuedTouchRecycleCount++; 7811 } 7812 } 7813 7814 /** 7815 * Reset the touch event queue. This will dump any pending events 7816 * and reset the sequence numbering. 7817 */ 7818 public void reset() { 7819 mNextTouchSequence = Long.MIN_VALUE + 1; 7820 mLastHandledTouchSequence = Long.MIN_VALUE; 7821 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7822 while (mTouchEventQueue != null) { 7823 QueuedTouch recycleMe = mTouchEventQueue; 7824 mTouchEventQueue = mTouchEventQueue.mNext; 7825 recycleQueuedTouch(recycleMe); 7826 } 7827 while (mPreQueue != null) { 7828 QueuedTouch recycleMe = mPreQueue; 7829 mPreQueue = mPreQueue.mNext; 7830 recycleQueuedTouch(recycleMe); 7831 } 7832 } 7833 7834 /** 7835 * Return the next valid sequence number for tagging incoming touch events. 7836 * @return The next touch event sequence number 7837 */ 7838 public long nextTouchSequence() { 7839 return mNextTouchSequence++; 7840 } 7841 7842 /** 7843 * Enqueue a touch event in the form of TouchEventData. 7844 * The sequence number will be read from the mSequence field of the argument. 7845 * 7846 * If the touch event's sequence number is the next in line to be processed, it will 7847 * be handled before this method returns. Any subsequent events that have already 7848 * been queued will also be processed in their proper order. 7849 * 7850 * @param ted Touch data to be processed in order. 7851 * @return true if the event was processed before returning, false if it was just enqueued. 7852 */ 7853 public boolean enqueueTouchEvent(TouchEventData ted) { 7854 // Remove from the pre-queue if present 7855 QueuedTouch preQueue = mPreQueue; 7856 if (preQueue != null) { 7857 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7858 // if it was present in the pre-queue, and removed from the pre-queue itself. 7859 if (preQueue.mSequence == ted.mSequence) { 7860 mPreQueue = preQueue.mNext; 7861 } else { 7862 QueuedTouch prev = preQueue; 7863 preQueue = null; 7864 while (prev.mNext != null) { 7865 if (prev.mNext.mSequence == ted.mSequence) { 7866 preQueue = prev.mNext; 7867 prev.mNext = preQueue.mNext; 7868 break; 7869 } else { 7870 prev = prev.mNext; 7871 } 7872 } 7873 } 7874 } 7875 7876 if (ted.mSequence < mLastHandledTouchSequence) { 7877 // Stale event and we already moved on; drop it. (Should not be common.) 7878 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7879 " received from webcore; ignoring"); 7880 return false; 7881 } 7882 7883 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7884 return false; 7885 } 7886 7887 // dropStaleGestures above might have fast-forwarded us to 7888 // an event we have already. 7889 runNextQueuedEvents(); 7890 7891 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7892 if (preQueue != null) { 7893 recycleQueuedTouch(preQueue); 7894 preQueue = null; 7895 } 7896 handleQueuedTouchEventData(ted); 7897 7898 mLastHandledTouchSequence++; 7899 7900 // Do we have any more? Run them if so. 7901 runNextQueuedEvents(); 7902 } else { 7903 // Reuse the pre-queued object if we had it. 7904 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 7905 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7906 } 7907 return true; 7908 } 7909 7910 /** 7911 * Enqueue a touch event in the form of a MotionEvent from the framework. 7912 * 7913 * If the touch event's sequence number is the next in line to be processed, it will 7914 * be handled before this method returns. Any subsequent events that have already 7915 * been queued will also be processed in their proper order. 7916 * 7917 * @param ev MotionEvent to be processed in order 7918 */ 7919 public void enqueueTouchEvent(MotionEvent ev) { 7920 final long sequence = nextTouchSequence(); 7921 7922 if (dropStaleGestures(ev, sequence)) { 7923 return; 7924 } 7925 7926 // dropStaleGestures above might have fast-forwarded us to 7927 // an event we have already. 7928 runNextQueuedEvents(); 7929 7930 if (mLastHandledTouchSequence + 1 == sequence) { 7931 handleQueuedMotionEvent(ev); 7932 7933 mLastHandledTouchSequence++; 7934 7935 // Do we have any more? Run them if so. 7936 runNextQueuedEvents(); 7937 } else { 7938 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7939 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7940 } 7941 } 7942 7943 private void runNextQueuedEvents() { 7944 QueuedTouch qd = mTouchEventQueue; 7945 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7946 handleQueuedTouch(qd); 7947 QueuedTouch recycleMe = qd; 7948 qd = qd.mNext; 7949 recycleQueuedTouch(recycleMe); 7950 mLastHandledTouchSequence++; 7951 } 7952 mTouchEventQueue = qd; 7953 } 7954 7955 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7956 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7957 // This is to make sure that we don't attempt to process a tap 7958 // or long press when webkit takes too long to get back to us. 7959 // The movement will be properly confirmed when we process the 7960 // enqueued event later. 7961 final int dx = Math.round(ev.getX()) - mLastTouchX; 7962 final int dy = Math.round(ev.getY()) - mLastTouchY; 7963 if (dx * dx + dy * dy > mTouchSlopSquare) { 7964 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7965 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7966 } 7967 } 7968 7969 if (mTouchEventQueue == null) { 7970 return sequence <= mLastHandledTouchSequence; 7971 } 7972 7973 // If we have a new down event and it's been a while since the last event 7974 // we saw, catch up as best we can and keep going. 7975 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 7976 long eventTime = ev.getEventTime(); 7977 long lastHandledEventTime = mLastEventTime; 7978 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 7979 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7980 "Catching up."); 7981 runQueuedAndPreQueuedEvents(); 7982 7983 // Drop leftovers that we truly don't have. 7984 QueuedTouch qd = mTouchEventQueue; 7985 while (qd != null && qd.mSequence < sequence) { 7986 QueuedTouch recycleMe = qd; 7987 qd = qd.mNext; 7988 recycleQueuedTouch(recycleMe); 7989 } 7990 mTouchEventQueue = qd; 7991 mLastHandledTouchSequence = sequence - 1; 7992 } 7993 } 7994 7995 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 7996 QueuedTouch qd = mTouchEventQueue; 7997 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7998 QueuedTouch recycleMe = qd; 7999 qd = qd.mNext; 8000 recycleQueuedTouch(recycleMe); 8001 } 8002 mTouchEventQueue = qd; 8003 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8004 } 8005 8006 if (mPreQueue != null) { 8007 // Drop stale prequeued events 8008 QueuedTouch qd = mPreQueue; 8009 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8010 QueuedTouch recycleMe = qd; 8011 qd = qd.mNext; 8012 recycleQueuedTouch(recycleMe); 8013 } 8014 mPreQueue = qd; 8015 } 8016 8017 return sequence <= mLastHandledTouchSequence; 8018 } 8019 8020 private void handleQueuedTouch(QueuedTouch qt) { 8021 if (qt.mTed != null) { 8022 handleQueuedTouchEventData(qt.mTed); 8023 } else { 8024 handleQueuedMotionEvent(qt.mEvent); 8025 qt.mEvent.recycle(); 8026 } 8027 } 8028 8029 private void handleQueuedMotionEvent(MotionEvent ev) { 8030 mLastEventTime = ev.getEventTime(); 8031 int action = ev.getActionMasked(); 8032 if (ev.getPointerCount() > 1) { // Multi-touch 8033 handleMultiTouchInWebView(ev); 8034 } else { 8035 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8036 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8037 // ScaleGestureDetector needs a consistent event stream to operate properly. 8038 // It won't take any action with fewer than two pointers, but it needs to 8039 // update internal bookkeeping state. 8040 detector.onTouchEvent(ev); 8041 } 8042 8043 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8044 } 8045 } 8046 8047 private void handleQueuedTouchEventData(TouchEventData ted) { 8048 if (ted.mMotionEvent != null) { 8049 mLastEventTime = ted.mMotionEvent.getEventTime(); 8050 } 8051 if (!ted.mReprocess) { 8052 if (ted.mAction == MotionEvent.ACTION_DOWN 8053 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8054 // if prevent default is called from WebCore, UI 8055 // will not handle the rest of the touch events any 8056 // more. 8057 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8058 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8059 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8060 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8061 // the return for the first ACTION_MOVE will decide 8062 // whether UI will handle touch or not. Currently no 8063 // support for alternating prevent default 8064 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8065 : PREVENT_DEFAULT_NO; 8066 } 8067 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8068 mTouchHighlightRegion.setEmpty(); 8069 } 8070 } else { 8071 if (ted.mPoints.length > 1) { // multi-touch 8072 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8073 mPreventDefault = PREVENT_DEFAULT_NO; 8074 handleMultiTouchInWebView(ted.mMotionEvent); 8075 } else { 8076 mPreventDefault = PREVENT_DEFAULT_YES; 8077 } 8078 return; 8079 } 8080 8081 // prevent default is not called in WebCore, so the 8082 // message needs to be reprocessed in UI 8083 if (!ted.mNativeResult) { 8084 // Following is for single touch. 8085 switch (ted.mAction) { 8086 case MotionEvent.ACTION_DOWN: 8087 mLastDeferTouchX = ted.mPointsInView[0].x; 8088 mLastDeferTouchY = ted.mPointsInView[0].y; 8089 mDeferTouchMode = TOUCH_INIT_MODE; 8090 break; 8091 case MotionEvent.ACTION_MOVE: { 8092 // no snapping in defer process 8093 int x = ted.mPointsInView[0].x; 8094 int y = ted.mPointsInView[0].y; 8095 8096 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8097 mDeferTouchMode = TOUCH_DRAG_MODE; 8098 mLastDeferTouchX = x; 8099 mLastDeferTouchY = y; 8100 startScrollingLayer(x, y); 8101 startDrag(); 8102 } 8103 int deltaX = pinLocX((int) (mScrollX 8104 + mLastDeferTouchX - x)) 8105 - mScrollX; 8106 int deltaY = pinLocY((int) (mScrollY 8107 + mLastDeferTouchY - y)) 8108 - mScrollY; 8109 doDrag(deltaX, deltaY); 8110 if (deltaX != 0) mLastDeferTouchX = x; 8111 if (deltaY != 0) mLastDeferTouchY = y; 8112 break; 8113 } 8114 case MotionEvent.ACTION_UP: 8115 case MotionEvent.ACTION_CANCEL: 8116 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8117 // no fling in defer process 8118 mScroller.springBack(mScrollX, mScrollY, 0, 8119 computeMaxScrollX(), 0, 8120 computeMaxScrollY()); 8121 invalidate(); 8122 WebViewCore.resumePriority(); 8123 WebViewCore.resumeUpdatePicture(mWebViewCore); 8124 } 8125 mDeferTouchMode = TOUCH_DONE_MODE; 8126 break; 8127 case WebViewCore.ACTION_DOUBLETAP: 8128 // doDoubleTap() needs mLastTouchX/Y as anchor 8129 mLastDeferTouchX = ted.mPointsInView[0].x; 8130 mLastDeferTouchY = ted.mPointsInView[0].y; 8131 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8132 mDeferTouchMode = TOUCH_DONE_MODE; 8133 break; 8134 case WebViewCore.ACTION_LONGPRESS: 8135 HitTestResult hitTest = getHitTestResult(); 8136 if (hitTest != null && hitTest.mType 8137 != HitTestResult.UNKNOWN_TYPE) { 8138 performLongClick(); 8139 } 8140 mDeferTouchMode = TOUCH_DONE_MODE; 8141 break; 8142 } 8143 } 8144 } 8145 } 8146 } 8147 8148 //------------------------------------------------------------------------- 8149 // Methods can be called from a separate thread, like WebViewCore 8150 // If it needs to call the View system, it has to send message. 8151 //------------------------------------------------------------------------- 8152 8153 /** 8154 * General handler to receive message coming from webkit thread 8155 */ 8156 class PrivateHandler extends Handler { 8157 @Override 8158 public void handleMessage(Message msg) { 8159 // exclude INVAL_RECT_MSG_ID since it is frequently output 8160 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8161 if (msg.what >= FIRST_PRIVATE_MSG_ID 8162 && msg.what <= LAST_PRIVATE_MSG_ID) { 8163 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8164 - FIRST_PRIVATE_MSG_ID]); 8165 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8166 && msg.what <= LAST_PACKAGE_MSG_ID) { 8167 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8168 - FIRST_PACKAGE_MSG_ID]); 8169 } else { 8170 Log.v(LOGTAG, Integer.toString(msg.what)); 8171 } 8172 } 8173 if (mWebViewCore == null) { 8174 // after WebView's destroy() is called, skip handling messages. 8175 return; 8176 } 8177 if (mBlockWebkitViewMessages 8178 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8179 // Blocking messages from webkit 8180 return; 8181 } 8182 switch (msg.what) { 8183 case REMEMBER_PASSWORD: { 8184 mDatabase.setUsernamePassword( 8185 msg.getData().getString("host"), 8186 msg.getData().getString("username"), 8187 msg.getData().getString("password")); 8188 ((Message) msg.obj).sendToTarget(); 8189 break; 8190 } 8191 case NEVER_REMEMBER_PASSWORD: { 8192 mDatabase.setUsernamePassword( 8193 msg.getData().getString("host"), null, null); 8194 ((Message) msg.obj).sendToTarget(); 8195 break; 8196 } 8197 case PREVENT_DEFAULT_TIMEOUT: { 8198 // if timeout happens, cancel it so that it won't block UI 8199 // to continue handling touch events 8200 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8201 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8202 || (msg.arg1 == MotionEvent.ACTION_MOVE 8203 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8204 cancelWebCoreTouchEvent( 8205 viewToContentX(mLastTouchX + mScrollX), 8206 viewToContentY(mLastTouchY + mScrollY), 8207 true); 8208 } 8209 break; 8210 } 8211 case SCROLL_SELECT_TEXT: { 8212 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8213 mSentAutoScrollMessage = false; 8214 break; 8215 } 8216 if (mScrollingLayer == 0) { 8217 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8218 } else { 8219 mScrollingLayerRect.left += mAutoScrollX; 8220 mScrollingLayerRect.top += mAutoScrollY; 8221 nativeScrollLayer(mScrollingLayer, 8222 mScrollingLayerRect.left, 8223 mScrollingLayerRect.top); 8224 invalidate(); 8225 } 8226 sendEmptyMessageDelayed( 8227 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8228 break; 8229 } 8230 case UPDATE_SELECTION: { 8231 if (mTouchMode == TOUCH_INIT_MODE 8232 || mTouchMode == TOUCH_SHORTPRESS_MODE 8233 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8234 updateSelection(); 8235 } 8236 break; 8237 } 8238 case SWITCH_TO_SHORTPRESS: { 8239 mInitialHitTestResult = null; // set by updateSelection() 8240 if (mTouchMode == TOUCH_INIT_MODE) { 8241 if (!getSettings().supportTouchOnly() 8242 && mPreventDefault != PREVENT_DEFAULT_YES) { 8243 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8244 updateSelection(); 8245 } else { 8246 // set to TOUCH_SHORTPRESS_MODE so that it won't 8247 // trigger double tap any more 8248 mTouchMode = TOUCH_SHORTPRESS_MODE; 8249 } 8250 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8251 mTouchMode = TOUCH_DONE_MODE; 8252 } 8253 break; 8254 } 8255 case SWITCH_TO_LONGPRESS: { 8256 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 8257 removeTouchHighlight(); 8258 } 8259 if (inFullScreenMode() || mDeferTouchProcess) { 8260 TouchEventData ted = new TouchEventData(); 8261 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8262 ted.mIds = new int[1]; 8263 ted.mIds[0] = 0; 8264 ted.mPoints = new Point[1]; 8265 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8266 viewToContentY(mLastTouchY + mScrollY)); 8267 ted.mPointsInView = new Point[1]; 8268 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8269 // metaState for long press is tricky. Should it be the 8270 // state when the press started or when the press was 8271 // released? Or some intermediary key state? For 8272 // simplicity for now, we don't set it. 8273 ted.mMetaState = 0; 8274 ted.mReprocess = mDeferTouchProcess; 8275 ted.mNativeLayer = nativeScrollableLayer( 8276 ted.mPoints[0].x, ted.mPoints[0].y, 8277 ted.mNativeLayerRect, null); 8278 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8279 mTouchEventQueue.preQueueTouchEventData(ted); 8280 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8281 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8282 mTouchMode = TOUCH_DONE_MODE; 8283 performLongClick(); 8284 } 8285 break; 8286 } 8287 case RELEASE_SINGLE_TAP: { 8288 doShortPress(); 8289 break; 8290 } 8291 case SCROLL_TO_MSG_ID: { 8292 // arg1 = animate, arg2 = onlyIfImeIsShowing 8293 // obj = Point(x, y) 8294 if (msg.arg2 == 1) { 8295 // This scroll is intended to bring the textfield into 8296 // view, but is only necessary if the IME is showing 8297 InputMethodManager imm = InputMethodManager.peekInstance(); 8298 if (imm == null || !imm.isAcceptingText() 8299 || (!imm.isActive(WebView.this) && (!inEditingMode() 8300 || !imm.isActive(mWebTextView)))) { 8301 break; 8302 } 8303 } 8304 final Point p = (Point) msg.obj; 8305 if (msg.arg1 == 1) { 8306 spawnContentScrollTo(p.x, p.y); 8307 } else { 8308 setContentScrollTo(p.x, p.y); 8309 } 8310 break; 8311 } 8312 case UPDATE_ZOOM_RANGE: { 8313 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8314 // mScrollX contains the new minPrefWidth 8315 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8316 break; 8317 } 8318 case REPLACE_BASE_CONTENT: { 8319 nativeReplaceBaseContent(msg.arg1); 8320 break; 8321 } 8322 case NEW_PICTURE_MSG_ID: { 8323 // called for new content 8324 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8325 setNewPicture(draw, true); 8326 break; 8327 } 8328 case WEBCORE_INITIALIZED_MSG_ID: 8329 // nativeCreate sets mNativeClass to a non-zero value 8330 String drawableDir = BrowserFrame.getRawResFilename( 8331 BrowserFrame.DRAWABLEDIR, mContext); 8332 nativeCreate(msg.arg1, drawableDir); 8333 if (mDelaySetPicture != null) { 8334 setNewPicture(mDelaySetPicture, true); 8335 mDelaySetPicture = null; 8336 } 8337 break; 8338 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8339 // Make sure that the textfield is currently focused 8340 // and representing the same node as the pointer. 8341 if (inEditingMode() && 8342 mWebTextView.isSameTextField(msg.arg1)) { 8343 if (msg.arg2 == mTextGeneration) { 8344 String text = (String) msg.obj; 8345 if (null == text) { 8346 text = ""; 8347 } 8348 mWebTextView.setTextAndKeepSelection(text); 8349 } 8350 } 8351 break; 8352 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8353 displaySoftKeyboard(true); 8354 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8355 case UPDATE_TEXT_SELECTION_MSG_ID: 8356 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8357 (WebViewCore.TextSelectionData) msg.obj); 8358 break; 8359 case FORM_DID_BLUR: 8360 if (inEditingMode() 8361 && mWebTextView.isSameTextField(msg.arg1)) { 8362 hideSoftKeyboard(); 8363 } 8364 break; 8365 case RETURN_LABEL: 8366 if (inEditingMode() 8367 && mWebTextView.isSameTextField(msg.arg1)) { 8368 mWebTextView.setHint((String) msg.obj); 8369 InputMethodManager imm 8370 = InputMethodManager.peekInstance(); 8371 // The hint is propagated to the IME in 8372 // onCreateInputConnection. If the IME is already 8373 // active, restart it so that its hint text is updated. 8374 if (imm != null && imm.isActive(mWebTextView)) { 8375 imm.restartInput(mWebTextView); 8376 } 8377 } 8378 break; 8379 case UNHANDLED_NAV_KEY: 8380 navHandledKey(msg.arg1, 1, false, 0); 8381 break; 8382 case UPDATE_TEXT_ENTRY_MSG_ID: 8383 // this is sent after finishing resize in WebViewCore. Make 8384 // sure the text edit box is still on the screen. 8385 if (inEditingMode() && nativeCursorIsTextInput()) { 8386 rebuildWebTextView(); 8387 } 8388 break; 8389 case CLEAR_TEXT_ENTRY: 8390 clearTextEntry(); 8391 break; 8392 case INVAL_RECT_MSG_ID: { 8393 Rect r = (Rect)msg.obj; 8394 if (r == null) { 8395 invalidate(); 8396 } else { 8397 // we need to scale r from content into view coords, 8398 // which viewInvalidate() does for us 8399 viewInvalidate(r.left, r.top, r.right, r.bottom); 8400 } 8401 break; 8402 } 8403 case REQUEST_FORM_DATA: 8404 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8405 if (mWebTextView.isSameTextField(msg.arg1)) { 8406 mWebTextView.setAdapterCustom(adapter); 8407 } 8408 break; 8409 case RESUME_WEBCORE_PRIORITY: 8410 WebViewCore.resumePriority(); 8411 WebViewCore.resumeUpdatePicture(mWebViewCore); 8412 break; 8413 8414 case LONG_PRESS_CENTER: 8415 // as this is shared by keydown and trackballdown, reset all 8416 // the states 8417 mGotCenterDown = false; 8418 mTrackballDown = false; 8419 performLongClick(); 8420 break; 8421 8422 case WEBCORE_NEED_TOUCH_EVENTS: 8423 mForwardTouchEvents = (msg.arg1 != 0); 8424 break; 8425 8426 case PREVENT_TOUCH_ID: 8427 if (inFullScreenMode()) { 8428 break; 8429 } 8430 TouchEventData ted = (TouchEventData) msg.obj; 8431 8432 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8433 // WebCore is responding to us; remove pending timeout. 8434 // It will be re-posted when needed. 8435 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8436 } 8437 break; 8438 8439 case REQUEST_KEYBOARD: 8440 if (msg.arg1 == 0) { 8441 hideSoftKeyboard(); 8442 } else { 8443 displaySoftKeyboard(false); 8444 } 8445 break; 8446 8447 case FIND_AGAIN: 8448 // Ignore if find has been dismissed. 8449 if (mFindIsUp && mFindCallback != null) { 8450 mFindCallback.findAll(); 8451 } 8452 break; 8453 8454 case DRAG_HELD_MOTIONLESS: 8455 mHeldMotionless = MOTIONLESS_TRUE; 8456 invalidate(); 8457 // fall through to keep scrollbars awake 8458 8459 case AWAKEN_SCROLL_BARS: 8460 if (mTouchMode == TOUCH_DRAG_MODE 8461 && mHeldMotionless == MOTIONLESS_TRUE) { 8462 awakenScrollBars(ViewConfiguration 8463 .getScrollDefaultDelay(), false); 8464 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8465 .obtainMessage(AWAKEN_SCROLL_BARS), 8466 ViewConfiguration.getScrollDefaultDelay()); 8467 } 8468 break; 8469 8470 case DO_MOTION_UP: 8471 doMotionUp(msg.arg1, msg.arg2); 8472 break; 8473 8474 case SCREEN_ON: 8475 setKeepScreenOn(msg.arg1 == 1); 8476 break; 8477 8478 case ENTER_FULLSCREEN_VIDEO: 8479 int layerId = msg.arg1; 8480 8481 String url = (String) msg.obj; 8482 if (mHTML5VideoViewProxy != null) { 8483 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8484 } 8485 break; 8486 8487 case SHOW_FULLSCREEN: { 8488 View view = (View) msg.obj; 8489 int orientation = msg.arg1; 8490 int npp = msg.arg2; 8491 8492 if (inFullScreenMode()) { 8493 Log.w(LOGTAG, "Should not have another full screen."); 8494 dismissFullScreenMode(); 8495 } 8496 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8497 mFullScreenHolder.setContentView(view); 8498 mFullScreenHolder.show(); 8499 8500 break; 8501 } 8502 case HIDE_FULLSCREEN: 8503 dismissFullScreenMode(); 8504 break; 8505 8506 case DOM_FOCUS_CHANGED: 8507 if (inEditingMode()) { 8508 nativeClearCursor(); 8509 rebuildWebTextView(); 8510 } 8511 break; 8512 8513 case SHOW_RECT_MSG_ID: { 8514 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8515 int x = mScrollX; 8516 int left = contentToViewX(data.mLeft); 8517 int width = contentToViewDimension(data.mWidth); 8518 int maxWidth = contentToViewDimension(data.mContentWidth); 8519 int viewWidth = getViewWidth(); 8520 if (width < viewWidth) { 8521 // center align 8522 x += left + width / 2 - mScrollX - viewWidth / 2; 8523 } else { 8524 x += (int) (left + data.mXPercentInDoc * width 8525 - mScrollX - data.mXPercentInView * viewWidth); 8526 } 8527 if (DebugFlags.WEB_VIEW) { 8528 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8529 width + ",maxWidth=" + maxWidth + 8530 ",viewWidth=" + viewWidth + ",x=" 8531 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8532 ",xPercentInView=" + data.mXPercentInView+ ")"); 8533 } 8534 // use the passing content width to cap x as the current 8535 // mContentWidth may not be updated yet 8536 x = Math.max(0, 8537 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8538 int top = contentToViewY(data.mTop); 8539 int height = contentToViewDimension(data.mHeight); 8540 int maxHeight = contentToViewDimension(data.mContentHeight); 8541 int viewHeight = getViewHeight(); 8542 int y = (int) (top + data.mYPercentInDoc * height - 8543 data.mYPercentInView * viewHeight); 8544 if (DebugFlags.WEB_VIEW) { 8545 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8546 height + ",maxHeight=" + maxHeight + 8547 ",viewHeight=" + viewHeight + ",y=" 8548 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8549 ",yPercentInView=" + data.mYPercentInView+ ")"); 8550 } 8551 // use the passing content height to cap y as the current 8552 // mContentHeight may not be updated yet 8553 y = Math.max(0, 8554 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8555 // We need to take into account the visible title height 8556 // when scrolling since y is an absolute view position. 8557 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8558 scrollTo(x, y); 8559 } 8560 break; 8561 8562 case CENTER_FIT_RECT: 8563 centerFitRect((Rect)msg.obj); 8564 break; 8565 8566 case SET_SCROLLBAR_MODES: 8567 mHorizontalScrollBarMode = msg.arg1; 8568 mVerticalScrollBarMode = msg.arg2; 8569 break; 8570 8571 case SELECTION_STRING_CHANGED: 8572 if (mAccessibilityInjector != null) { 8573 String selectionString = (String) msg.obj; 8574 mAccessibilityInjector.onSelectionStringChange(selectionString); 8575 } 8576 break; 8577 8578 case SET_TOUCH_HIGHLIGHT_RECTS: 8579 @SuppressWarnings("unchecked") 8580 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8581 setTouchHighlightRects(rects); 8582 break; 8583 8584 case SAVE_WEBARCHIVE_FINISHED: 8585 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8586 if (saveMessage.mCallback != null) { 8587 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8588 } 8589 break; 8590 8591 case SET_AUTOFILLABLE: 8592 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8593 if (mWebTextView != null) { 8594 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8595 rebuildWebTextView(); 8596 } 8597 break; 8598 8599 case AUTOFILL_COMPLETE: 8600 if (mWebTextView != null) { 8601 // Clear the WebTextView adapter when AutoFill finishes 8602 // so that the drop down gets cleared. 8603 mWebTextView.setAdapterCustom(null); 8604 } 8605 break; 8606 8607 case SELECT_AT: 8608 nativeSelectAt(msg.arg1, msg.arg2); 8609 break; 8610 8611 default: 8612 super.handleMessage(msg); 8613 break; 8614 } 8615 } 8616 } 8617 8618 private void setTouchHighlightRects(ArrayList<Rect> rects) { 8619 invalidate(mTouchHighlightRegion.getBounds()); 8620 mTouchHighlightRegion.setEmpty(); 8621 if (rects != null) { 8622 for (Rect rect : rects) { 8623 Rect viewRect = contentToViewRect(rect); 8624 // some sites, like stories in nytimes.com, set 8625 // mouse event handler in the top div. It is not 8626 // user friendly to highlight the div if it covers 8627 // more than half of the screen. 8628 if (viewRect.width() < getWidth() >> 1 8629 || viewRect.height() < getHeight() >> 1) { 8630 mTouchHighlightRegion.union(viewRect); 8631 } else { 8632 Log.w(LOGTAG, "Skip the huge selection rect:" 8633 + viewRect); 8634 } 8635 } 8636 invalidate(mTouchHighlightRegion.getBounds()); 8637 } 8638 } 8639 8640 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8641 * acceleration) */ 8642 protected void pageSwapCallback() { 8643 if (inEditingMode()) { 8644 didUpdateWebTextViewDimensions(ANYWHERE); 8645 } 8646 } 8647 8648 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8649 if (mNativeClass == 0) { 8650 if (mDelaySetPicture != null) { 8651 throw new IllegalStateException("Tried to setNewPicture with" 8652 + " a delay picture already set! (memory leak)"); 8653 } 8654 // Not initialized yet, delay set 8655 mDelaySetPicture = draw; 8656 return; 8657 } 8658 WebViewCore.ViewState viewState = draw.mViewState; 8659 boolean isPictureAfterFirstLayout = viewState != null; 8660 8661 if (updateBaseLayer) { 8662 // Request a callback on pageSwap (to reposition the webtextview) 8663 boolean registerPageSwapCallback = 8664 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8665 8666 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8667 getSettings().getShowVisualIndicator(), 8668 isPictureAfterFirstLayout, registerPageSwapCallback); 8669 } 8670 final Point viewSize = draw.mViewSize; 8671 if (isPictureAfterFirstLayout) { 8672 // Reset the last sent data here since dealing with new page. 8673 mLastWidthSent = 0; 8674 mZoomManager.onFirstLayout(draw); 8675 if (!mDrawHistory) { 8676 // Do not send the scroll event for this particular 8677 // scroll message. Note that a scroll event may 8678 // still be fired if the user scrolls before the 8679 // message can be handled. 8680 mSendScrollEvent = false; 8681 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 8682 mSendScrollEvent = true; 8683 8684 // As we are on a new page, remove the WebTextView. This 8685 // is necessary for page loads driven by webkit, and in 8686 // particular when the user was on a password field, so 8687 // the WebTextView was visible. 8688 clearTextEntry(); 8689 } 8690 } 8691 8692 // We update the layout (i.e. request a layout from the 8693 // view system) if the last view size that we sent to 8694 // WebCore matches the view size of the picture we just 8695 // received in the fixed dimension. 8696 final boolean updateLayout = viewSize.x == mLastWidthSent 8697 && viewSize.y == mLastHeightSent; 8698 // Don't send scroll event for picture coming from webkit, 8699 // since the new picture may cause a scroll event to override 8700 // the saved history scroll position. 8701 mSendScrollEvent = false; 8702 recordNewContentSize(draw.mContentSize.x, 8703 draw.mContentSize.y, updateLayout); 8704 mSendScrollEvent = true; 8705 if (DebugFlags.WEB_VIEW) { 8706 Rect b = draw.mInvalRegion.getBounds(); 8707 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8708 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8709 } 8710 invalidateContentRect(draw.mInvalRegion.getBounds()); 8711 8712 if (mPictureListener != null) { 8713 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8714 } 8715 8716 // update the zoom information based on the new picture 8717 mZoomManager.onNewPicture(draw); 8718 8719 if (draw.mFocusSizeChanged && inEditingMode()) { 8720 mFocusSizeChanged = true; 8721 } 8722 if (isPictureAfterFirstLayout) { 8723 mViewManager.postReadyToDrawAll(); 8724 } 8725 } 8726 8727 /** 8728 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8729 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8730 */ 8731 private void updateTextSelectionFromMessage(int nodePointer, 8732 int textGeneration, WebViewCore.TextSelectionData data) { 8733 if (inEditingMode() 8734 && mWebTextView.isSameTextField(nodePointer) 8735 && textGeneration == mTextGeneration) { 8736 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8737 } 8738 } 8739 8740 // Class used to use a dropdown for a <select> element 8741 private class InvokeListBox implements Runnable { 8742 // Whether the listbox allows multiple selection. 8743 private boolean mMultiple; 8744 // Passed in to a list with multiple selection to tell 8745 // which items are selected. 8746 private int[] mSelectedArray; 8747 // Passed in to a list with single selection to tell 8748 // where the initial selection is. 8749 private int mSelection; 8750 8751 private Container[] mContainers; 8752 8753 // Need these to provide stable ids to my ArrayAdapter, 8754 // which normally does not have stable ids. (Bug 1250098) 8755 private class Container extends Object { 8756 /** 8757 * Possible values for mEnabled. Keep in sync with OptionStatus in 8758 * WebViewCore.cpp 8759 */ 8760 final static int OPTGROUP = -1; 8761 final static int OPTION_DISABLED = 0; 8762 final static int OPTION_ENABLED = 1; 8763 8764 String mString; 8765 int mEnabled; 8766 int mId; 8767 8768 @Override 8769 public String toString() { 8770 return mString; 8771 } 8772 } 8773 8774 /** 8775 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8776 * and allow filtering. 8777 */ 8778 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8779 public MyArrayListAdapter() { 8780 super(mContext, 8781 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8782 com.android.internal.R.layout.webview_select_singlechoice, 8783 mContainers); 8784 } 8785 8786 @Override 8787 public View getView(int position, View convertView, 8788 ViewGroup parent) { 8789 // Always pass in null so that we will get a new CheckedTextView 8790 // Otherwise, an item which was previously used as an <optgroup> 8791 // element (i.e. has no check), could get used as an <option> 8792 // element, which needs a checkbox/radio, but it would not have 8793 // one. 8794 convertView = super.getView(position, null, parent); 8795 Container c = item(position); 8796 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8797 // ListView does not draw dividers between disabled and 8798 // enabled elements. Use a LinearLayout to provide dividers 8799 LinearLayout layout = new LinearLayout(mContext); 8800 layout.setOrientation(LinearLayout.VERTICAL); 8801 if (position > 0) { 8802 View dividerTop = new View(mContext); 8803 dividerTop.setBackgroundResource( 8804 android.R.drawable.divider_horizontal_bright); 8805 layout.addView(dividerTop); 8806 } 8807 8808 if (Container.OPTGROUP == c.mEnabled) { 8809 // Currently select_dialog_multichoice uses CheckedTextViews. 8810 // If that changes, the class cast will no longer be valid. 8811 if (mMultiple) { 8812 Assert.assertTrue(convertView instanceof CheckedTextView); 8813 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8814 } 8815 } else { 8816 // c.mEnabled == Container.OPTION_DISABLED 8817 // Draw the disabled element in a disabled state. 8818 convertView.setEnabled(false); 8819 } 8820 8821 layout.addView(convertView); 8822 if (position < getCount() - 1) { 8823 View dividerBottom = new View(mContext); 8824 dividerBottom.setBackgroundResource( 8825 android.R.drawable.divider_horizontal_bright); 8826 layout.addView(dividerBottom); 8827 } 8828 return layout; 8829 } 8830 return convertView; 8831 } 8832 8833 @Override 8834 public boolean hasStableIds() { 8835 // AdapterView's onChanged method uses this to determine whether 8836 // to restore the old state. Return false so that the old (out 8837 // of date) state does not replace the new, valid state. 8838 return false; 8839 } 8840 8841 private Container item(int position) { 8842 if (position < 0 || position >= getCount()) { 8843 return null; 8844 } 8845 return (Container) getItem(position); 8846 } 8847 8848 @Override 8849 public long getItemId(int position) { 8850 Container item = item(position); 8851 if (item == null) { 8852 return -1; 8853 } 8854 return item.mId; 8855 } 8856 8857 @Override 8858 public boolean areAllItemsEnabled() { 8859 return false; 8860 } 8861 8862 @Override 8863 public boolean isEnabled(int position) { 8864 Container item = item(position); 8865 if (item == null) { 8866 return false; 8867 } 8868 return Container.OPTION_ENABLED == item.mEnabled; 8869 } 8870 } 8871 8872 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8873 mMultiple = true; 8874 mSelectedArray = selected; 8875 8876 int length = array.length; 8877 mContainers = new Container[length]; 8878 for (int i = 0; i < length; i++) { 8879 mContainers[i] = new Container(); 8880 mContainers[i].mString = array[i]; 8881 mContainers[i].mEnabled = enabled[i]; 8882 mContainers[i].mId = i; 8883 } 8884 } 8885 8886 private InvokeListBox(String[] array, int[] enabled, int selection) { 8887 mSelection = selection; 8888 mMultiple = false; 8889 8890 int length = array.length; 8891 mContainers = new Container[length]; 8892 for (int i = 0; i < length; i++) { 8893 mContainers[i] = new Container(); 8894 mContainers[i].mString = array[i]; 8895 mContainers[i].mEnabled = enabled[i]; 8896 mContainers[i].mId = i; 8897 } 8898 } 8899 8900 /* 8901 * Whenever the data set changes due to filtering, this class ensures 8902 * that the checked item remains checked. 8903 */ 8904 private class SingleDataSetObserver extends DataSetObserver { 8905 private long mCheckedId; 8906 private ListView mListView; 8907 private Adapter mAdapter; 8908 8909 /* 8910 * Create a new observer. 8911 * @param id The ID of the item to keep checked. 8912 * @param l ListView for getting and clearing the checked states 8913 * @param a Adapter for getting the IDs 8914 */ 8915 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8916 mCheckedId = id; 8917 mListView = l; 8918 mAdapter = a; 8919 } 8920 8921 @Override 8922 public void onChanged() { 8923 // The filter may have changed which item is checked. Find the 8924 // item that the ListView thinks is checked. 8925 int position = mListView.getCheckedItemPosition(); 8926 long id = mAdapter.getItemId(position); 8927 if (mCheckedId != id) { 8928 // Clear the ListView's idea of the checked item, since 8929 // it is incorrect 8930 mListView.clearChoices(); 8931 // Search for mCheckedId. If it is in the filtered list, 8932 // mark it as checked 8933 int count = mAdapter.getCount(); 8934 for (int i = 0; i < count; i++) { 8935 if (mAdapter.getItemId(i) == mCheckedId) { 8936 mListView.setItemChecked(i, true); 8937 break; 8938 } 8939 } 8940 } 8941 } 8942 } 8943 8944 public void run() { 8945 final ListView listView = (ListView) LayoutInflater.from(mContext) 8946 .inflate(com.android.internal.R.layout.select_dialog, null); 8947 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8948 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8949 .setView(listView).setCancelable(true) 8950 .setInverseBackgroundForced(true); 8951 8952 if (mMultiple) { 8953 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8954 public void onClick(DialogInterface dialog, int which) { 8955 mWebViewCore.sendMessage( 8956 EventHub.LISTBOX_CHOICES, 8957 adapter.getCount(), 0, 8958 listView.getCheckedItemPositions()); 8959 }}); 8960 b.setNegativeButton(android.R.string.cancel, 8961 new DialogInterface.OnClickListener() { 8962 public void onClick(DialogInterface dialog, int which) { 8963 mWebViewCore.sendMessage( 8964 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8965 }}); 8966 } 8967 mListBoxDialog = b.create(); 8968 listView.setAdapter(adapter); 8969 listView.setFocusableInTouchMode(true); 8970 // There is a bug (1250103) where the checks in a ListView with 8971 // multiple items selected are associated with the positions, not 8972 // the ids, so the items do not properly retain their checks when 8973 // filtered. Do not allow filtering on multiple lists until 8974 // that bug is fixed. 8975 8976 listView.setTextFilterEnabled(!mMultiple); 8977 if (mMultiple) { 8978 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8979 int length = mSelectedArray.length; 8980 for (int i = 0; i < length; i++) { 8981 listView.setItemChecked(mSelectedArray[i], true); 8982 } 8983 } else { 8984 listView.setOnItemClickListener(new OnItemClickListener() { 8985 public void onItemClick(AdapterView<?> parent, View v, 8986 int position, long id) { 8987 // Rather than sending the message right away, send it 8988 // after the page regains focus. 8989 mListBoxMessage = Message.obtain(null, 8990 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8991 mListBoxDialog.dismiss(); 8992 mListBoxDialog = null; 8993 } 8994 }); 8995 if (mSelection != -1) { 8996 listView.setSelection(mSelection); 8997 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8998 listView.setItemChecked(mSelection, true); 8999 DataSetObserver observer = new SingleDataSetObserver( 9000 adapter.getItemId(mSelection), listView, adapter); 9001 adapter.registerDataSetObserver(observer); 9002 } 9003 } 9004 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9005 public void onCancel(DialogInterface dialog) { 9006 mWebViewCore.sendMessage( 9007 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9008 mListBoxDialog = null; 9009 } 9010 }); 9011 mListBoxDialog.show(); 9012 } 9013 } 9014 9015 private Message mListBoxMessage; 9016 9017 /* 9018 * Request a dropdown menu for a listbox with multiple selection. 9019 * 9020 * @param array Labels for the listbox. 9021 * @param enabledArray State for each element in the list. See static 9022 * integers in Container class. 9023 * @param selectedArray Which positions are initally selected. 9024 */ 9025 void requestListBox(String[] array, int[] enabledArray, int[] 9026 selectedArray) { 9027 mPrivateHandler.post( 9028 new InvokeListBox(array, enabledArray, selectedArray)); 9029 } 9030 9031 /* 9032 * Request a dropdown menu for a listbox with single selection or a single 9033 * <select> element. 9034 * 9035 * @param array Labels for the listbox. 9036 * @param enabledArray State for each element in the list. See static 9037 * integers in Container class. 9038 * @param selection Which position is initally selected. 9039 */ 9040 void requestListBox(String[] array, int[] enabledArray, int selection) { 9041 mPrivateHandler.post( 9042 new InvokeListBox(array, enabledArray, selection)); 9043 } 9044 9045 // called by JNI 9046 private void sendMoveFocus(int frame, int node) { 9047 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9048 new WebViewCore.CursorData(frame, node, 0, 0)); 9049 } 9050 9051 // called by JNI 9052 private void sendMoveMouse(int frame, int node, int x, int y) { 9053 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9054 new WebViewCore.CursorData(frame, node, x, y)); 9055 } 9056 9057 /* 9058 * Send a mouse move event to the webcore thread. 9059 * 9060 * @param removeFocus Pass true to remove the WebTextView, if present. 9061 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9062 * called by JNI 9063 */ 9064 @SuppressWarnings("unused") 9065 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9066 if (removeFocus) { 9067 clearTextEntry(); 9068 } 9069 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9070 stopPaintingCaret ? 1 : 0, 0, 9071 cursorData()); 9072 } 9073 9074 /** 9075 * Called by JNI to send a message to the webcore thread that the user 9076 * touched the webpage. 9077 * @param touchGeneration Generation number of the touch, to ignore touches 9078 * after a new one has been generated. 9079 * @param frame Pointer to the frame holding the node that was touched. 9080 * @param node Pointer to the node touched. 9081 * @param x x-position of the touch. 9082 * @param y y-position of the touch. 9083 */ 9084 private void sendMotionUp(int touchGeneration, 9085 int frame, int node, int x, int y) { 9086 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9087 touchUpData.mMoveGeneration = touchGeneration; 9088 touchUpData.mFrame = frame; 9089 touchUpData.mNode = node; 9090 touchUpData.mX = x; 9091 touchUpData.mY = y; 9092 touchUpData.mNativeLayer = nativeScrollableLayer( 9093 x, y, touchUpData.mNativeLayerRect, null); 9094 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9095 } 9096 9097 9098 private int getScaledMaxXScroll() { 9099 int width; 9100 if (mHeightCanMeasure == false) { 9101 width = getViewWidth() / 4; 9102 } else { 9103 Rect visRect = new Rect(); 9104 calcOurVisibleRect(visRect); 9105 width = visRect.width() / 2; 9106 } 9107 // FIXME the divisor should be retrieved from somewhere 9108 return viewToContentX(width); 9109 } 9110 9111 private int getScaledMaxYScroll() { 9112 int height; 9113 if (mHeightCanMeasure == false) { 9114 height = getViewHeight() / 4; 9115 } else { 9116 Rect visRect = new Rect(); 9117 calcOurVisibleRect(visRect); 9118 height = visRect.height() / 2; 9119 } 9120 // FIXME the divisor should be retrieved from somewhere 9121 // the closest thing today is hard-coded into ScrollView.java 9122 // (from ScrollView.java, line 363) int maxJump = height/2; 9123 return Math.round(height * mZoomManager.getInvScale()); 9124 } 9125 9126 /** 9127 * Called by JNI to invalidate view 9128 */ 9129 private void viewInvalidate() { 9130 invalidate(); 9131 } 9132 9133 /** 9134 * Pass the key directly to the page. This assumes that 9135 * nativePageShouldHandleShiftAndArrows() returned true. 9136 */ 9137 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9138 int keyEventAction; 9139 int eventHubAction; 9140 if (down) { 9141 keyEventAction = KeyEvent.ACTION_DOWN; 9142 eventHubAction = EventHub.KEY_DOWN; 9143 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9144 } else { 9145 keyEventAction = KeyEvent.ACTION_UP; 9146 eventHubAction = EventHub.KEY_UP; 9147 } 9148 9149 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9150 1, (metaState & KeyEvent.META_SHIFT_ON) 9151 | (metaState & KeyEvent.META_ALT_ON) 9152 | (metaState & KeyEvent.META_SYM_ON) 9153 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9154 mWebViewCore.sendMessage(eventHubAction, event); 9155 } 9156 9157 // return true if the key was handled 9158 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9159 long time) { 9160 if (mNativeClass == 0) { 9161 return false; 9162 } 9163 mInitialHitTestResult = null; 9164 mLastCursorTime = time; 9165 mLastCursorBounds = nativeGetCursorRingBounds(); 9166 boolean keyHandled 9167 = nativeMoveCursor(keyCode, count, noScroll) == false; 9168 if (DebugFlags.WEB_VIEW) { 9169 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9170 + " mLastCursorTime=" + mLastCursorTime 9171 + " handled=" + keyHandled); 9172 } 9173 if (keyHandled == false) { 9174 return keyHandled; 9175 } 9176 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9177 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9178 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9179 // set last touch so that context menu related functions will work 9180 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9181 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9182 if (mHeightCanMeasure == false) { 9183 return keyHandled; 9184 } 9185 Rect visRect = new Rect(); 9186 calcOurVisibleRect(visRect); 9187 Rect outset = new Rect(visRect); 9188 int maxXScroll = visRect.width() / 2; 9189 int maxYScroll = visRect.height() / 2; 9190 outset.inset(-maxXScroll, -maxYScroll); 9191 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9192 return keyHandled; 9193 } 9194 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9195 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9196 maxXScroll); 9197 if (maxH > 0) { 9198 pinScrollBy(maxH, 0, true, 0); 9199 } else { 9200 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9201 -maxXScroll); 9202 if (maxH < 0) { 9203 pinScrollBy(maxH, 0, true, 0); 9204 } 9205 } 9206 if (mLastCursorBounds.isEmpty()) return keyHandled; 9207 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9208 return keyHandled; 9209 } 9210 if (DebugFlags.WEB_VIEW) { 9211 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9212 + contentCursorRingBounds); 9213 } 9214 requestRectangleOnScreen(viewCursorRingBounds); 9215 return keyHandled; 9216 } 9217 9218 /** 9219 * @return Whether accessibility script has been injected. 9220 */ 9221 private boolean accessibilityScriptInjected() { 9222 // TODO: Maybe the injected script should announce its presence in 9223 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9224 // will check that as one of the conditions it looks for 9225 return mAccessibilityScriptInjected; 9226 } 9227 9228 /** 9229 * Set the background color. It's white by default. Pass 9230 * zero to make the view transparent. 9231 * @param color the ARGB color described by Color.java 9232 */ 9233 @Override 9234 public void setBackgroundColor(int color) { 9235 mBackgroundColor = color; 9236 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9237 } 9238 9239 /** 9240 * @deprecated This method is now obsolete. 9241 */ 9242 @Deprecated 9243 public void debugDump() { 9244 checkThread(); 9245 nativeDebugDump(); 9246 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9247 } 9248 9249 /** 9250 * Draw the HTML page into the specified canvas. This call ignores any 9251 * view-specific zoom, scroll offset, or other changes. It does not draw 9252 * any view-specific chrome, such as progress or URL bars. 9253 * 9254 * @hide only needs to be accessible to Browser and testing 9255 */ 9256 public void drawPage(Canvas canvas) { 9257 nativeDraw(canvas, 0, 0, false); 9258 } 9259 9260 /** 9261 * Enable the communication b/t the webView and VideoViewProxy 9262 * 9263 * @hide only used by the Browser 9264 */ 9265 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9266 mHTML5VideoViewProxy = proxy; 9267 } 9268 9269 /** 9270 * Set the time to wait between passing touches to WebCore. See also the 9271 * TOUCH_SENT_INTERVAL member for further discussion. 9272 * 9273 * @hide This is only used by the DRT test application. 9274 */ 9275 public void setTouchInterval(int interval) { 9276 mCurrentTouchInterval = interval; 9277 } 9278 9279 /** 9280 * Update our cache with updatedText. 9281 * @param updatedText The new text to put in our cache. 9282 * @hide 9283 */ 9284 protected void updateCachedTextfield(String updatedText) { 9285 // Also place our generation number so that when we look at the cache 9286 // we recognize that it is up to date. 9287 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9288 } 9289 9290 /*package*/ void autoFillForm(int autoFillQueryId) { 9291 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9292 } 9293 9294 /* package */ ViewManager getViewManager() { 9295 return mViewManager; 9296 } 9297 9298 private static void checkThread() { 9299 if (Looper.myLooper() != Looper.getMainLooper()) { 9300 Throwable throwable = new Throwable( 9301 "Warning: A WebView method was called on thread '" + 9302 Thread.currentThread().getName() + "'. " + 9303 "All WebView methods must be called on the UI thread. " + 9304 "Future versions of WebView may not support use on other threads."); 9305 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9306 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9307 } 9308 } 9309 9310 /** @hide send content invalidate */ 9311 protected void contentInvalidateAll() { 9312 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9313 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9314 } 9315 } 9316 9317 /** @hide call pageSwapCallback upon next page swap */ 9318 protected void registerPageSwapCallback() { 9319 nativeRegisterPageSwapCallback(); 9320 } 9321 9322 /** 9323 * Begin collecting per-tile profiling data 9324 * 9325 * @hide only used by profiling tests 9326 */ 9327 public void tileProfilingStart() { 9328 nativeTileProfilingStart(); 9329 } 9330 /** 9331 * Return per-tile profiling data 9332 * 9333 * @hide only used by profiling tests 9334 */ 9335 public float tileProfilingStop() { 9336 return nativeTileProfilingStop(); 9337 } 9338 9339 /** @hide only used by profiling tests */ 9340 public void tileProfilingClear() { 9341 nativeTileProfilingClear(); 9342 } 9343 /** @hide only used by profiling tests */ 9344 public int tileProfilingNumFrames() { 9345 return nativeTileProfilingNumFrames(); 9346 } 9347 /** @hide only used by profiling tests */ 9348 public int tileProfilingNumTilesInFrame(int frame) { 9349 return nativeTileProfilingNumTilesInFrame(frame); 9350 } 9351 /** @hide only used by profiling tests */ 9352 public int tileProfilingGetInt(int frame, int tile, String key) { 9353 return nativeTileProfilingGetInt(frame, tile, key); 9354 } 9355 /** @hide only used by profiling tests */ 9356 public float tileProfilingGetFloat(int frame, int tile, String key) { 9357 return nativeTileProfilingGetFloat(frame, tile, key); 9358 } 9359 9360 /** 9361 * Helper method to deal with differences between hardware and software rendering 9362 */ 9363 private void recordButtons(Canvas canvas, boolean focus, boolean pressed, 9364 boolean inval) { 9365 boolean isHardwareAccel = canvas != null 9366 ? canvas.isHardwareAccelerated() 9367 : isHardwareAccelerated(); 9368 if (isHardwareAccel) { 9369 // We never want to change button state if we are hardware accelerated, 9370 // but we DO want to invalidate as necessary so that the GL ring 9371 // can be drawn 9372 nativeRecordButtons(false, false, inval); 9373 } else { 9374 nativeRecordButtons(focus, pressed, inval); 9375 } 9376 } 9377 9378 private native int nativeCacheHitFramePointer(); 9379 private native boolean nativeCacheHitIsPlugin(); 9380 private native Rect nativeCacheHitNodeBounds(); 9381 private native int nativeCacheHitNodePointer(); 9382 /* package */ native void nativeClearCursor(); 9383 private native void nativeCreate(int ptr, String drawableDir); 9384 private native int nativeCursorFramePointer(); 9385 private native Rect nativeCursorNodeBounds(); 9386 private native int nativeCursorNodePointer(); 9387 private native boolean nativeCursorIntersects(Rect visibleRect); 9388 private native boolean nativeCursorIsAnchor(); 9389 private native boolean nativeCursorIsTextInput(); 9390 private native Point nativeCursorPosition(); 9391 private native String nativeCursorText(); 9392 /** 9393 * Returns true if the native cursor node says it wants to handle key events 9394 * (ala plugins). This can only be called if mNativeClass is non-zero! 9395 */ 9396 private native boolean nativeCursorWantsKeyEvents(); 9397 private native void nativeDebugDump(); 9398 private native void nativeDestroy(); 9399 9400 /** 9401 * Draw the picture set with a background color and extra. If 9402 * "splitIfNeeded" is true and the return value is not 0, the return value 9403 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9404 * native allocation can be freed. 9405 */ 9406 private native int nativeDraw(Canvas canvas, int color, int extra, 9407 boolean splitIfNeeded); 9408 private native void nativeDumpDisplayTree(String urlOrNull); 9409 private native boolean nativeEvaluateLayersAnimations(); 9410 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 9411 float scale, int extras); 9412 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 9413 private native void nativeExtendSelection(int x, int y); 9414 private native int nativeFindAll(String findLower, String findUpper, 9415 boolean sameAsLastSearch); 9416 private native void nativeFindNext(boolean forward); 9417 /* package */ native int nativeFocusCandidateFramePointer(); 9418 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9419 /* package */ native boolean nativeFocusCandidateIsPassword(); 9420 private native boolean nativeFocusCandidateIsRtlText(); 9421 private native boolean nativeFocusCandidateIsTextInput(); 9422 /* package */ native int nativeFocusCandidateMaxLength(); 9423 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9424 /* package */ native String nativeFocusCandidateName(); 9425 private native Rect nativeFocusCandidateNodeBounds(); 9426 /** 9427 * @return A Rect with left, top, right, bottom set to the corresponding 9428 * padding values in the focus candidate, if it is a textfield/textarea with 9429 * a style. Otherwise return null. This is not actually a rectangle; Rect 9430 * is being used to pass four integers. 9431 */ 9432 private native Rect nativeFocusCandidatePaddingRect(); 9433 /* package */ native int nativeFocusCandidatePointer(); 9434 private native String nativeFocusCandidateText(); 9435 /* package */ native float nativeFocusCandidateTextSize(); 9436 /* package */ native int nativeFocusCandidateLineHeight(); 9437 /** 9438 * Returns an integer corresponding to WebView.cpp::type. 9439 * See WebTextView.setType() 9440 */ 9441 private native int nativeFocusCandidateType(); 9442 private native boolean nativeFocusIsPlugin(); 9443 private native Rect nativeFocusNodeBounds(); 9444 /* package */ native int nativeFocusNodePointer(); 9445 private native Rect nativeGetCursorRingBounds(); 9446 private native String nativeGetSelection(); 9447 private native boolean nativeHasCursorNode(); 9448 private native boolean nativeHasFocusNode(); 9449 private native void nativeHideCursor(); 9450 private native boolean nativeHitSelection(int x, int y); 9451 private native String nativeImageURI(int x, int y); 9452 private native void nativeInstrumentReport(); 9453 private native Rect nativeLayerBounds(int layer); 9454 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9455 // return true if the page has been scrolled 9456 private native boolean nativeMotionUp(int x, int y, int slop); 9457 // returns false if it handled the key 9458 private native boolean nativeMoveCursor(int keyCode, int count, 9459 boolean noScroll); 9460 private native int nativeMoveGeneration(); 9461 private native void nativeMoveSelection(int x, int y); 9462 /** 9463 * @return true if the page should get the shift and arrow keys, rather 9464 * than select text/navigation. 9465 * 9466 * If the focus is a plugin, or if the focus and cursor match and are 9467 * a contentEditable element, then the page should handle these keys. 9468 */ 9469 private native boolean nativePageShouldHandleShiftAndArrows(); 9470 private native boolean nativePointInNavCache(int x, int y, int slop); 9471 // Like many other of our native methods, you must make sure that 9472 // mNativeClass is not null before calling this method. 9473 private native void nativeRecordButtons(boolean focused, 9474 boolean pressed, boolean invalidate); 9475 private native void nativeResetSelection(); 9476 private native Point nativeSelectableText(); 9477 private native void nativeSelectAll(); 9478 private native void nativeSelectBestAt(Rect rect); 9479 private native void nativeSelectAt(int x, int y); 9480 private native int nativeSelectionX(); 9481 private native int nativeSelectionY(); 9482 private native int nativeFindIndex(); 9483 private native void nativeSetExtendSelection(); 9484 private native void nativeSetFindIsEmpty(); 9485 private native void nativeSetFindIsUp(boolean isUp); 9486 private native void nativeSetHeightCanMeasure(boolean measure); 9487 private native void nativeSetBaseLayer(int layer, Region invalRegion, 9488 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9489 boolean registerPageSwapCallback); 9490 private native int nativeGetBaseLayer(); 9491 private native void nativeShowCursorTimed(); 9492 private native void nativeReplaceBaseContent(int content); 9493 private native void nativeCopyBaseContentToPicture(Picture pict); 9494 private native boolean nativeHasContent(); 9495 private native void nativeSetSelectionPointer(boolean set, 9496 float scale, int x, int y); 9497 private native boolean nativeStartSelection(int x, int y); 9498 private native void nativeStopGL(); 9499 private native Rect nativeSubtractLayers(Rect content); 9500 private native int nativeTextGeneration(); 9501 private native void nativeRegisterPageSwapCallback(); 9502 private native void nativeTileProfilingStart(); 9503 private native float nativeTileProfilingStop(); 9504 private native void nativeTileProfilingClear(); 9505 private native int nativeTileProfilingNumFrames(); 9506 private native int nativeTileProfilingNumTilesInFrame(int frame); 9507 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9508 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9509 // Never call this version except by updateCachedTextfield(String) - 9510 // we always want to pass in our generation number. 9511 private native void nativeUpdateCachedTextfield(String updatedText, 9512 int generation); 9513 private native boolean nativeWordSelection(int x, int y); 9514 // return NO_LEFTEDGE means failure. 9515 static final int NO_LEFTEDGE = -1; 9516 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9517 9518 private native void nativeUseHardwareAccelSkia(boolean enabled); 9519 9520 // Returns a pointer to the scrollable LayerAndroid at the given point. 9521 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9522 Rect scrollBounds); 9523 /** 9524 * Scroll the specified layer. 9525 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9526 * @param newX Destination x position to which to scroll. 9527 * @param newY Destination y position to which to scroll. 9528 * @return True if the layer is successfully scrolled. 9529 */ 9530 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9531 private native void nativeSetIsScrolling(boolean isScrolling); 9532 private native int nativeGetBackgroundColor(); 9533 native boolean nativeSetProperty(String key, String value); 9534 native String nativeGetProperty(String key); 9535 private native void nativeGetTextSelectionRegion(Region region); 9536 /** 9537 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9538 */ 9539 private static native void nativeOnTrimMemory(int level); 9540} 9541