WebView.java revision e230e54f09116056e34c7fedd50838ad551c24df
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.ActivityManager; 21import android.app.AlertDialog; 22import android.content.BroadcastReceiver; 23import android.content.ClipboardManager; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.DialogInterface; 27import android.content.DialogInterface.OnCancelListener; 28import android.content.Intent; 29import android.content.IntentFilter; 30import android.content.pm.PackageInfo; 31import android.content.pm.PackageManager; 32import android.content.res.Configuration; 33import android.database.DataSetObserver; 34import android.graphics.Bitmap; 35import android.graphics.BitmapFactory; 36import android.graphics.BitmapShader; 37import android.graphics.Canvas; 38import android.graphics.Color; 39import android.graphics.DrawFilter; 40import android.graphics.Paint; 41import android.graphics.PaintFlagsDrawFilter; 42import android.graphics.Picture; 43import android.graphics.Point; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region; 47import android.graphics.RegionIterator; 48import android.graphics.Shader; 49import android.graphics.drawable.Drawable; 50import android.net.Proxy; 51import android.net.ProxyProperties; 52import android.net.Uri; 53import android.net.http.SslCertificate; 54import android.os.AsyncTask; 55import android.os.Bundle; 56import android.os.Handler; 57import android.os.Looper; 58import android.os.Message; 59import android.os.StrictMode; 60import android.provider.Settings; 61import android.speech.tts.TextToSpeech; 62import android.text.TextUtils; 63import android.util.AttributeSet; 64import android.util.EventLog; 65import android.util.Log; 66import android.view.Display; 67import android.view.Gravity; 68import android.view.HapticFeedbackConstants; 69import android.view.HardwareCanvas; 70import android.view.InputDevice; 71import android.view.KeyCharacterMap; 72import android.view.KeyEvent; 73import android.view.LayoutInflater; 74import android.view.MotionEvent; 75import android.view.ScaleGestureDetector; 76import android.view.SoundEffectConstants; 77import android.view.VelocityTracker; 78import android.view.View; 79import android.view.ViewConfiguration; 80import android.view.ViewGroup; 81import android.view.ViewParent; 82import android.view.ViewTreeObserver; 83import android.view.WindowManager; 84import android.view.accessibility.AccessibilityEvent; 85import android.view.accessibility.AccessibilityManager; 86import android.view.accessibility.AccessibilityNodeInfo; 87import android.view.inputmethod.EditorInfo; 88import android.view.inputmethod.InputConnection; 89import android.view.inputmethod.InputMethodManager; 90import android.webkit.WebTextView.AutoCompleteAdapter; 91import android.webkit.WebViewCore.DrawData; 92import android.webkit.WebViewCore.EventHub; 93import android.webkit.WebViewCore.TouchEventData; 94import android.webkit.WebViewCore.TouchHighlightData; 95import android.widget.AbsoluteLayout; 96import android.widget.Adapter; 97import android.widget.AdapterView; 98import android.widget.AdapterView.OnItemClickListener; 99import android.widget.ArrayAdapter; 100import android.widget.CheckedTextView; 101import android.widget.LinearLayout; 102import android.widget.ListView; 103import android.widget.OverScroller; 104import android.widget.Toast; 105 106import junit.framework.Assert; 107 108import java.io.File; 109import java.io.FileInputStream; 110import java.io.FileNotFoundException; 111import java.io.FileOutputStream; 112import java.io.IOException; 113import java.io.InputStream; 114import java.io.OutputStream; 115import java.net.URLDecoder; 116import java.util.ArrayList; 117import java.util.HashMap; 118import java.util.HashSet; 119import java.util.List; 120import java.util.Map; 121import java.util.Set; 122import java.util.Vector; 123import java.util.regex.Matcher; 124import java.util.regex.Pattern; 125 126import javax.microedition.khronos.egl.EGL10; 127import javax.microedition.khronos.egl.EGLContext; 128import javax.microedition.khronos.egl.EGLDisplay; 129import static javax.microedition.khronos.egl.EGL10.*; 130 131/** 132 * <p>A View that displays web pages. This class is the basis upon which you 133 * can roll your own web browser or simply display some online content within your Activity. 134 * It uses the WebKit rendering engine to display 135 * web pages and includes methods to navigate forward and backward 136 * through a history, zoom in and out, perform text searches and more.</p> 137 * <p>To enable the built-in zoom, set 138 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 139 * (introduced in API version 3). 140 * <p>Note that, in order for your Activity to access the Internet and load web pages 141 * in a WebView, you must add the {@code INTERNET} permissions to your 142 * Android Manifest file:</p> 143 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 144 * 145 * <p>This must be a child of the <a 146 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 147 * element.</p> 148 * 149 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 150 * tutorial</a>.</p> 151 * 152 * <h3>Basic usage</h3> 153 * 154 * <p>By default, a WebView provides no browser-like widgets, does not 155 * enable JavaScript and web page errors are ignored. If your goal is only 156 * to display some HTML as a part of your UI, this is probably fine; 157 * the user won't need to interact with the web page beyond reading 158 * it, and the web page won't need to interact with the user. If you 159 * actually want a full-blown web browser, then you probably want to 160 * invoke the Browser application with a URL Intent rather than show it 161 * with a WebView. For example: 162 * <pre> 163 * Uri uri = Uri.parse("http://www.example.com"); 164 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 165 * startActivity(intent); 166 * </pre> 167 * <p>See {@link android.content.Intent} for more information.</p> 168 * 169 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 170 * or set the entire Activity window as a WebView during {@link 171 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 172 * <pre class="prettyprint"> 173 * WebView webview = new WebView(this); 174 * setContentView(webview); 175 * </pre> 176 * 177 * <p>Then load the desired web page:</p> 178 * <pre> 179 * // Simplest usage: note that an exception will NOT be thrown 180 * // if there is an error loading this page (see below). 181 * webview.loadUrl("http://slashdot.org/"); 182 * 183 * // OR, you can also load from an HTML string: 184 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 185 * webview.loadData(summary, "text/html", null); 186 * // ... although note that there are restrictions on what this HTML can do. 187 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 188 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 189 * </pre> 190 * 191 * <p>A WebView has several customization points where you can add your 192 * own behavior. These are:</p> 193 * 194 * <ul> 195 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 196 * This class is called when something that might impact a 197 * browser UI happens, for instance, progress updates and 198 * JavaScript alerts are sent here (see <a 199 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 200 * </li> 201 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 202 * It will be called when things happen that impact the 203 * rendering of the content, eg, errors or form submissions. You 204 * can also intercept URL loading here (via {@link 205 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 206 * shouldOverrideUrlLoading()}).</li> 207 * <li>Modifying the {@link android.webkit.WebSettings}, such as 208 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 209 * setJavaScriptEnabled()}. </li> 210 * <li>Injecting Java objects into the WebView using the 211 * {@link android.webkit.WebView#addJavascriptInterface} method. This 212 * method allows you to inject Java objects into a page's JavaScript 213 * context, so that they can be accessed by JavaScript in the page.</li> 214 * </ul> 215 * 216 * <p>Here's a more complicated example, showing error handling, 217 * settings, and progress notification:</p> 218 * 219 * <pre class="prettyprint"> 220 * // Let's display the progress in the activity title bar, like the 221 * // browser app does. 222 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 223 * 224 * webview.getSettings().setJavaScriptEnabled(true); 225 * 226 * final Activity activity = this; 227 * webview.setWebChromeClient(new WebChromeClient() { 228 * public void onProgressChanged(WebView view, int progress) { 229 * // Activities and WebViews measure progress with different scales. 230 * // The progress meter will automatically disappear when we reach 100% 231 * activity.setProgress(progress * 1000); 232 * } 233 * }); 234 * webview.setWebViewClient(new WebViewClient() { 235 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 236 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 237 * } 238 * }); 239 * 240 * webview.loadUrl("http://slashdot.org/"); 241 * </pre> 242 * 243 * <h3>Cookie and window management</h3> 244 * 245 * <p>For obvious security reasons, your application has its own 246 * cache, cookie store etc.—it does not share the Browser 247 * application's data. Cookies are managed on a separate thread, so 248 * operations like index building don't block the UI 249 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 250 * if you want to use cookies in your application. 251 * </p> 252 * 253 * <p>By default, requests by the HTML to open new windows are 254 * ignored. This is true whether they be opened by JavaScript or by 255 * the target attribute on a link. You can customize your 256 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 257 * and render them in whatever manner you want.</p> 258 * 259 * <p>The standard behavior for an Activity is to be destroyed and 260 * recreated when the device orientation or any other configuration changes. This will cause 261 * the WebView to reload the current page. If you don't want that, you 262 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 263 * changes, and then just leave the WebView alone. It'll automatically 264 * re-orient itself as appropriate. Read <a 265 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 266 * more information about how to handle configuration changes during runtime.</p> 267 * 268 * 269 * <h3>Building web pages to support different screen densities</h3> 270 * 271 * <p>The screen density of a device is based on the screen resolution. A screen with low density 272 * has fewer available pixels per inch, where a screen with high density 273 * has more — sometimes significantly more — pixels per inch. The density of a 274 * screen is important because, other things being equal, a UI element (such as a button) whose 275 * height and width are defined in terms of screen pixels will appear larger on the lower density 276 * screen and smaller on the higher density screen. 277 * For simplicity, Android collapses all actual screen densities into three generalized densities: 278 * high, medium, and low.</p> 279 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 280 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 281 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 282 * are bigger). 283 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 284 * you (as a web developer) target screens with different screen densities.</p> 285 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 286 * <ul> 287 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 288 * default scaling factor used for the current device. For example, if the value of {@code 289 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 290 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 291 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 292 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 293 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 294 * (discussed below), then you can stop this default scaling behavior.</li> 295 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 296 * densities for which this style sheet is to be used. The corresponding value should be either 297 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 298 * density, or high density screens, respectively. For example: 299 * <pre> 300 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 301 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 302 * which is the high density pixel ratio.</p> 303 * </li> 304 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 305 * this to specify the target density for which the web page is designed, using the following 306 * values: 307 * <ul> 308 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 309 * occurs.</li> 310 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 311 * as appropriate.</li> 312 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 313 * low density screens scale down. This is also the default behavior.</li> 314 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 315 * as appropriate.</li> 316 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 317 * values are 70-400).</li> 318 * </ul> 319 * <p>Here's an example meta tag to specify the target density:</p> 320 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 321 * </ul> 322 * <p>If you want to modify your web page for different densities, by using the {@code 323 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 324 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 325 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 326 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 327 * 328 * 329 */ 330@Widget 331public class WebView extends AbsoluteLayout 332 implements ViewTreeObserver.OnGlobalFocusChangeListener, 333 ViewGroup.OnHierarchyChangeListener { 334 335 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 336 public void onGlobalLayout() { 337 if (isShown()) { 338 setGLRectViewport(); 339 } 340 } 341 } 342 343 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 344 public void onScrollChanged() { 345 if (isShown()) { 346 setGLRectViewport(); 347 } 348 } 349 } 350 351 // The listener to capture global layout change event. 352 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 353 354 // The listener to capture scroll event. 355 private InnerScrollChangedListener mScrollChangedListener = null; 356 357 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 358 // the screen all-the-time. Good for profiling our drawing code 359 static private final boolean AUTO_REDRAW_HACK = false; 360 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 361 private boolean mAutoRedraw; 362 363 // Reference to the AlertDialog displayed by InvokeListBox. 364 // It's used to dismiss the dialog in destroy if not done before. 365 private AlertDialog mListBoxDialog = null; 366 367 static final String LOGTAG = "webview"; 368 369 private ZoomManager mZoomManager; 370 371 private final Rect mGLRectViewport = new Rect(); 372 private final Rect mViewRectViewport = new Rect(); 373 private final RectF mVisibleContentRect = new RectF(); 374 private boolean mGLViewportEmpty = false; 375 376 /** 377 * Transportation object for returning WebView across thread boundaries. 378 */ 379 public class WebViewTransport { 380 private WebView mWebview; 381 382 /** 383 * Set the WebView to the transportation object. 384 * @param webview The WebView to transport. 385 */ 386 public synchronized void setWebView(WebView webview) { 387 mWebview = webview; 388 } 389 390 /** 391 * Return the WebView object. 392 * @return WebView The transported WebView object. 393 */ 394 public synchronized WebView getWebView() { 395 return mWebview; 396 } 397 } 398 399 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 400 private static OnTrimMemoryListener sInstance = null; 401 402 static void init(Context c) { 403 if (sInstance == null) { 404 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 405 } 406 } 407 408 private OnTrimMemoryListener(Context c) { 409 c.registerComponentCallbacks(this); 410 } 411 412 @Override 413 public void onConfigurationChanged(Configuration newConfig) { 414 // Ignore 415 } 416 417 @Override 418 public void onLowMemory() { 419 // Ignore 420 } 421 422 @Override 423 public void onTrimMemory(int level) { 424 if (DebugFlags.WEB_VIEW) { 425 Log.d("WebView", "onTrimMemory: " + level); 426 } 427 WebView.nativeOnTrimMemory(level); 428 } 429 430 } 431 432 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 433 private final CallbackProxy mCallbackProxy; 434 435 private final WebViewDatabase mDatabase; 436 437 // SSL certificate for the main top-level page (if secure) 438 private SslCertificate mCertificate; 439 440 // Native WebView pointer that is 0 until the native object has been 441 // created. 442 private int mNativeClass; 443 // This would be final but it needs to be set to null when the WebView is 444 // destroyed. 445 private WebViewCore mWebViewCore; 446 // Handler for dispatching UI messages. 447 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 448 private WebTextView mWebTextView; 449 // Used to ignore changes to webkit text that arrives to the UI side after 450 // more key events. 451 private int mTextGeneration; 452 453 /* package */ void incrementTextGeneration() { mTextGeneration++; } 454 455 // Used by WebViewCore to create child views. 456 /* package */ final ViewManager mViewManager; 457 458 // Used to display in full screen mode 459 PluginFullScreenHolder mFullScreenHolder; 460 461 /** 462 * Position of the last touch event in pixels. 463 * Use integer to prevent loss of dragging delta calculation accuracy; 464 * which was done in float and converted to integer, and resulted in gradual 465 * and compounding touch position and view dragging mismatch. 466 */ 467 private int mLastTouchX; 468 private int mLastTouchY; 469 private int mStartTouchX; 470 private int mStartTouchY; 471 private float mAverageAngle; 472 473 /** 474 * Time of the last touch event. 475 */ 476 private long mLastTouchTime; 477 478 /** 479 * Time of the last time sending touch event to WebViewCore 480 */ 481 private long mLastSentTouchTime; 482 483 /** 484 * The minimum elapsed time before sending another ACTION_MOVE event to 485 * WebViewCore. This really should be tuned for each type of the devices. 486 * For example in Google Map api test case, it takes Dream device at least 487 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 488 * triggering the layout and drawing the picture. While the same process 489 * takes 60+ms on the current high speed device. If we make 490 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 491 * to WebViewCore queue and the real layout and draw events will be pushed 492 * to further, which slows down the refresh rate. Choose 50 to favor the 493 * current high speed devices. For Dream like devices, 100 is a better 494 * choice. Maybe make this in the buildspec later. 495 * (Update 12/14/2010: changed to 0 since current device should be able to 496 * handle the raw events and Map team voted to have the raw events too. 497 */ 498 private static final int TOUCH_SENT_INTERVAL = 0; 499 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 500 501 /** 502 * Helper class to get velocity for fling 503 */ 504 VelocityTracker mVelocityTracker; 505 private int mMaximumFling; 506 private float mLastVelocity; 507 private float mLastVelX; 508 private float mLastVelY; 509 510 // The id of the native layer being scrolled. 511 private int mCurrentScrollingLayerId; 512 private Rect mScrollingLayerRect = new Rect(); 513 514 // only trigger accelerated fling if the new velocity is at least 515 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 516 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 517 518 /** 519 * Touch mode 520 */ 521 private int mTouchMode = TOUCH_DONE_MODE; 522 private static final int TOUCH_INIT_MODE = 1; 523 private static final int TOUCH_DRAG_START_MODE = 2; 524 private static final int TOUCH_DRAG_MODE = 3; 525 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 526 private static final int TOUCH_SHORTPRESS_MODE = 5; 527 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 528 private static final int TOUCH_DONE_MODE = 7; 529 private static final int TOUCH_PINCH_DRAG = 8; 530 private static final int TOUCH_DRAG_LAYER_MODE = 9; 531 532 // Whether to forward the touch events to WebCore 533 // Can only be set by WebKit via JNI. 534 private boolean mForwardTouchEvents = false; 535 536 // Whether to prevent default during touch. The initial value depends on 537 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 538 // for touch down. Otherwise UI will wait for the answer of the first 539 // confirmed move before taking over the control. 540 private static final int PREVENT_DEFAULT_NO = 0; 541 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 542 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 543 private static final int PREVENT_DEFAULT_YES = 3; 544 private static final int PREVENT_DEFAULT_IGNORE = 4; 545 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 546 547 // true when the touch movement exceeds the slop 548 private boolean mConfirmMove; 549 550 // if true, touch events will be first processed by WebCore, if prevent 551 // default is not set, the UI will continue handle them. 552 private boolean mDeferTouchProcess; 553 554 // to avoid interfering with the current touch events, track them 555 // separately. Currently no snapping or fling in the deferred process mode 556 private int mDeferTouchMode = TOUCH_DONE_MODE; 557 private float mLastDeferTouchX; 558 private float mLastDeferTouchY; 559 560 // To keep track of whether the current drag was initiated by a WebTextView, 561 // so that we know not to hide the cursor 562 boolean mDragFromTextInput; 563 564 // Whether or not to draw the cursor ring. 565 private boolean mDrawCursorRing = true; 566 567 // true if onPause has been called (and not onResume) 568 private boolean mIsPaused; 569 570 private HitTestResult mInitialHitTestResult; 571 572 /** 573 * Customizable constant 574 */ 575 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 576 private int mTouchSlopSquare; 577 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 578 private int mDoubleTapSlopSquare; 579 // pre-computed density adjusted navigation slop 580 private int mNavSlop; 581 // This should be ViewConfiguration.getTapTimeout() 582 // But system time out is 100ms, which is too short for the browser. 583 // In the browser, if it switches out of tap too soon, jump tap won't work. 584 // In addition, a double tap on a trackpad will always have a duration of 585 // 300ms, so this value must be at least that (otherwise we will timeout the 586 // first tap and convert it to a long press). 587 private static final int TAP_TIMEOUT = 300; 588 // This should be ViewConfiguration.getLongPressTimeout() 589 // But system time out is 500ms, which is too short for the browser. 590 // With a short timeout, it's difficult to treat trigger a short press. 591 private static final int LONG_PRESS_TIMEOUT = 1000; 592 // needed to avoid flinging after a pause of no movement 593 private static final int MIN_FLING_TIME = 250; 594 // draw unfiltered after drag is held without movement 595 private static final int MOTIONLESS_TIME = 100; 596 // The amount of content to overlap between two screens when going through 597 // pages with the space bar, in pixels. 598 private static final int PAGE_SCROLL_OVERLAP = 24; 599 600 /** 601 * These prevent calling requestLayout if either dimension is fixed. This 602 * depends on the layout parameters and the measure specs. 603 */ 604 boolean mWidthCanMeasure; 605 boolean mHeightCanMeasure; 606 607 // Remember the last dimensions we sent to the native side so we can avoid 608 // sending the same dimensions more than once. 609 int mLastWidthSent; 610 int mLastHeightSent; 611 // Since view height sent to webkit could be fixed to avoid relayout, this 612 // value records the last sent actual view height. 613 int mLastActualHeightSent; 614 615 private int mContentWidth; // cache of value from WebViewCore 616 private int mContentHeight; // cache of value from WebViewCore 617 618 // Need to have the separate control for horizontal and vertical scrollbar 619 // style than the View's single scrollbar style 620 private boolean mOverlayHorizontalScrollbar = true; 621 private boolean mOverlayVerticalScrollbar = false; 622 623 // our standard speed. this way small distances will be traversed in less 624 // time than large distances, but we cap the duration, so that very large 625 // distances won't take too long to get there. 626 private static final int STD_SPEED = 480; // pixels per second 627 // time for the longest scroll animation 628 private static final int MAX_DURATION = 750; // milliseconds 629 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 630 631 // Used by OverScrollGlow 632 OverScroller mScroller; 633 634 private boolean mInOverScrollMode = false; 635 private static Paint mOverScrollBackground; 636 private static Paint mOverScrollBorder; 637 638 private boolean mWrapContent; 639 private static final int MOTIONLESS_FALSE = 0; 640 private static final int MOTIONLESS_PENDING = 1; 641 private static final int MOTIONLESS_TRUE = 2; 642 private static final int MOTIONLESS_IGNORE = 3; 643 private int mHeldMotionless; 644 645 // An instance for injecting accessibility in WebViews with disabled 646 // JavaScript or ones for which no accessibility script exists 647 private AccessibilityInjector mAccessibilityInjector; 648 649 // flag indicating if accessibility script is injected so we 650 // know to handle Shift and arrows natively first 651 private boolean mAccessibilityScriptInjected; 652 653 static final boolean USE_JAVA_TEXT_SELECTION = true; 654 static final boolean DEBUG_TEXT_HANDLES = false; 655 private Region mTextSelectionRegion = new Region(); 656 private Paint mTextSelectionPaint; 657 private Drawable mSelectHandleLeft; 658 private Drawable mSelectHandleRight; 659 660 static final boolean USE_WEBKIT_RINGS = false; 661 // the color used to highlight the touch rectangles 662 private static final int HIGHLIGHT_COLOR = 0x6633b5e5; 663 // the round corner for the highlight path 664 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 665 // the region indicating where the user touched on the screen 666 private Region mTouchHighlightRegion = new Region(); 667 // the paint for the touch highlight 668 private Paint mTouchHightlightPaint; 669 // debug only 670 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 671 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 672 private Paint mTouchCrossHairColor; 673 private int mTouchHighlightX; 674 private int mTouchHighlightY; 675 private long mTouchHighlightRequested; 676 677 // Basically this proxy is used to tell the Video to update layer tree at 678 // SetBaseLayer time and to pause when WebView paused. 679 private HTML5VideoViewProxy mHTML5VideoViewProxy; 680 681 // If we are using a set picture, don't send view updates to webkit 682 private boolean mBlockWebkitViewMessages = false; 683 684 // cached value used to determine if we need to switch drawing models 685 private boolean mHardwareAccelSkia = false; 686 687 /* 688 * Private message ids 689 */ 690 private static final int REMEMBER_PASSWORD = 1; 691 private static final int NEVER_REMEMBER_PASSWORD = 2; 692 private static final int SWITCH_TO_SHORTPRESS = 3; 693 private static final int SWITCH_TO_LONGPRESS = 4; 694 private static final int RELEASE_SINGLE_TAP = 5; 695 private static final int REQUEST_FORM_DATA = 6; 696 private static final int DRAG_HELD_MOTIONLESS = 8; 697 private static final int AWAKEN_SCROLL_BARS = 9; 698 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 699 private static final int SCROLL_SELECT_TEXT = 11; 700 701 702 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 703 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 704 705 /* 706 * Package message ids 707 */ 708 static final int SCROLL_TO_MSG_ID = 101; 709 static final int NEW_PICTURE_MSG_ID = 105; 710 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 711 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 712 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 713 static final int UPDATE_ZOOM_RANGE = 109; 714 static final int UNHANDLED_NAV_KEY = 110; 715 static final int CLEAR_TEXT_ENTRY = 111; 716 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 717 static final int SHOW_RECT_MSG_ID = 113; 718 static final int LONG_PRESS_CENTER = 114; 719 static final int PREVENT_TOUCH_ID = 115; 720 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 721 // obj=Rect in doc coordinates 722 static final int INVAL_RECT_MSG_ID = 117; 723 static final int REQUEST_KEYBOARD = 118; 724 static final int DO_MOTION_UP = 119; 725 static final int SHOW_FULLSCREEN = 120; 726 static final int HIDE_FULLSCREEN = 121; 727 static final int DOM_FOCUS_CHANGED = 122; 728 static final int REPLACE_BASE_CONTENT = 123; 729 static final int FORM_DID_BLUR = 124; 730 static final int RETURN_LABEL = 125; 731 static final int FIND_AGAIN = 126; 732 static final int CENTER_FIT_RECT = 127; 733 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 734 static final int SET_SCROLLBAR_MODES = 129; 735 static final int SELECTION_STRING_CHANGED = 130; 736 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 737 static final int SAVE_WEBARCHIVE_FINISHED = 132; 738 739 static final int SET_AUTOFILLABLE = 133; 740 static final int AUTOFILL_COMPLETE = 134; 741 742 static final int SELECT_AT = 135; 743 static final int SCREEN_ON = 136; 744 static final int ENTER_FULLSCREEN_VIDEO = 137; 745 static final int UPDATE_SELECTION = 138; 746 static final int UPDATE_ZOOM_DENSITY = 139; 747 748 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 749 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 750 751 static final String[] HandlerPrivateDebugString = { 752 "REMEMBER_PASSWORD", // = 1; 753 "NEVER_REMEMBER_PASSWORD", // = 2; 754 "SWITCH_TO_SHORTPRESS", // = 3; 755 "SWITCH_TO_LONGPRESS", // = 4; 756 "RELEASE_SINGLE_TAP", // = 5; 757 "REQUEST_FORM_DATA", // = 6; 758 "RESUME_WEBCORE_PRIORITY", // = 7; 759 "DRAG_HELD_MOTIONLESS", // = 8; 760 "AWAKEN_SCROLL_BARS", // = 9; 761 "PREVENT_DEFAULT_TIMEOUT", // = 10; 762 "SCROLL_SELECT_TEXT" // = 11; 763 }; 764 765 static final String[] HandlerPackageDebugString = { 766 "SCROLL_TO_MSG_ID", // = 101; 767 "102", // = 102; 768 "103", // = 103; 769 "104", // = 104; 770 "NEW_PICTURE_MSG_ID", // = 105; 771 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 772 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 773 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 774 "UPDATE_ZOOM_RANGE", // = 109; 775 "UNHANDLED_NAV_KEY", // = 110; 776 "CLEAR_TEXT_ENTRY", // = 111; 777 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 778 "SHOW_RECT_MSG_ID", // = 113; 779 "LONG_PRESS_CENTER", // = 114; 780 "PREVENT_TOUCH_ID", // = 115; 781 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 782 "INVAL_RECT_MSG_ID", // = 117; 783 "REQUEST_KEYBOARD", // = 118; 784 "DO_MOTION_UP", // = 119; 785 "SHOW_FULLSCREEN", // = 120; 786 "HIDE_FULLSCREEN", // = 121; 787 "DOM_FOCUS_CHANGED", // = 122; 788 "REPLACE_BASE_CONTENT", // = 123; 789 "FORM_DID_BLUR", // = 124; 790 "RETURN_LABEL", // = 125; 791 "FIND_AGAIN", // = 126; 792 "CENTER_FIT_RECT", // = 127; 793 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 794 "SET_SCROLLBAR_MODES", // = 129; 795 "SELECTION_STRING_CHANGED", // = 130; 796 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 797 "SAVE_WEBARCHIVE_FINISHED", // = 132; 798 "SET_AUTOFILLABLE", // = 133; 799 "AUTOFILL_COMPLETE", // = 134; 800 "SELECT_AT", // = 135; 801 "SCREEN_ON", // = 136; 802 "ENTER_FULLSCREEN_VIDEO", // = 137; 803 "UPDATE_SELECTION", // = 138; 804 "UPDATE_ZOOM_DENSITY" // = 139; 805 }; 806 807 // If the site doesn't use the viewport meta tag to specify the viewport, 808 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 809 static final int DEFAULT_VIEWPORT_WIDTH = 980; 810 811 // normally we try to fit the content to the minimum preferred width 812 // calculated by the Webkit. To avoid the bad behavior when some site's 813 // minimum preferred width keeps growing when changing the viewport width or 814 // the minimum preferred width is huge, an upper limit is needed. 815 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 816 817 // initial scale in percent. 0 means using default. 818 private int mInitialScaleInPercent = 0; 819 820 // Whether or not a scroll event should be sent to webkit. This is only set 821 // to false when restoring the scroll position. 822 private boolean mSendScrollEvent = true; 823 824 private int mSnapScrollMode = SNAP_NONE; 825 private static final int SNAP_NONE = 0; 826 private static final int SNAP_LOCK = 1; // not a separate state 827 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 828 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 829 private boolean mSnapPositive; 830 831 // keep these in sync with their counterparts in WebView.cpp 832 private static final int DRAW_EXTRAS_NONE = 0; 833 private static final int DRAW_EXTRAS_FIND = 1; 834 private static final int DRAW_EXTRAS_SELECTION = 2; 835 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 836 837 // keep this in sync with WebCore:ScrollbarMode in WebKit 838 private static final int SCROLLBAR_AUTO = 0; 839 private static final int SCROLLBAR_ALWAYSOFF = 1; 840 // as we auto fade scrollbar, this is ignored. 841 private static final int SCROLLBAR_ALWAYSON = 2; 842 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 843 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 844 845 // constants for determining script injection strategy 846 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 847 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 848 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 849 850 // the alias via which accessibility JavaScript interface is exposed 851 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 852 853 // Template for JavaScript that injects a screen-reader. 854 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 855 "javascript:(function() {" + 856 " var chooser = document.createElement('script');" + 857 " chooser.type = 'text/javascript';" + 858 " chooser.src = '%1s';" + 859 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 860 " })();"; 861 862 // Regular expression that matches the "axs" URL parameter. 863 // The value of 0 means the accessibility script is opted out 864 // The value of 1 means the accessibility script is already injected 865 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 866 867 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 868 private TextToSpeech mTextToSpeech; 869 870 // variable to cache the above pattern in case accessibility is enabled. 871 private Pattern mMatchAxsUrlParameterPattern; 872 873 /** 874 * Max distance to overscroll by in pixels. 875 * This how far content can be pulled beyond its normal bounds by the user. 876 */ 877 private int mOverscrollDistance; 878 879 /** 880 * Max distance to overfling by in pixels. 881 * This is how far flinged content can move beyond the end of its normal bounds. 882 */ 883 private int mOverflingDistance; 884 885 private OverScrollGlow mOverScrollGlow; 886 887 // Used to match key downs and key ups 888 private Vector<Integer> mKeysPressed; 889 890 /* package */ static boolean mLogEvent = true; 891 892 // for event log 893 private long mLastTouchUpTime = 0; 894 895 private WebViewCore.AutoFillData mAutoFillData; 896 897 private static boolean sNotificationsEnabled = true; 898 899 /** 900 * URI scheme for telephone number 901 */ 902 public static final String SCHEME_TEL = "tel:"; 903 /** 904 * URI scheme for email address 905 */ 906 public static final String SCHEME_MAILTO = "mailto:"; 907 /** 908 * URI scheme for map address 909 */ 910 public static final String SCHEME_GEO = "geo:0,0?q="; 911 912 private int mBackgroundColor = Color.WHITE; 913 914 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 915 private int mAutoScrollX = 0; 916 private int mAutoScrollY = 0; 917 private int mMinAutoScrollX = 0; 918 private int mMaxAutoScrollX = 0; 919 private int mMinAutoScrollY = 0; 920 private int mMaxAutoScrollY = 0; 921 private Rect mScrollingLayerBounds = new Rect(); 922 private boolean mSentAutoScrollMessage = false; 923 924 // Temporary hack to work around the context removal upon memory pressure 925 private static boolean mIncrementEGLContextHack = false; 926 927 // used for serializing asynchronously handled touch events. 928 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 929 930 // Used to track whether picture updating was paused due to a window focus change. 931 private boolean mPictureUpdatePausedForFocusChange = false; 932 933 // Used to notify listeners of a new picture. 934 private PictureListener mPictureListener; 935 /** 936 * Interface to listen for new pictures as they change. 937 * @deprecated This interface is now obsolete. 938 */ 939 @Deprecated 940 public interface PictureListener { 941 /** 942 * Notify the listener that the picture has changed. 943 * @param view The WebView that owns the picture. 944 * @param picture The new picture. 945 * @deprecated Due to internal changes, the picture does not include 946 * composited layers such as fixed position elements or scrollable divs. 947 * While the PictureListener API can still be used to detect changes in 948 * the WebView content, you are advised against its usage until a replacement 949 * is provided in a future Android release 950 */ 951 @Deprecated 952 public void onNewPicture(WebView view, Picture picture); 953 } 954 955 // FIXME: Want to make this public, but need to change the API file. 956 public /*static*/ class HitTestResult { 957 /** 958 * Default HitTestResult, where the target is unknown 959 */ 960 public static final int UNKNOWN_TYPE = 0; 961 /** 962 * @deprecated This type is no longer used. 963 */ 964 @Deprecated 965 public static final int ANCHOR_TYPE = 1; 966 /** 967 * HitTestResult for hitting a phone number 968 */ 969 public static final int PHONE_TYPE = 2; 970 /** 971 * HitTestResult for hitting a map address 972 */ 973 public static final int GEO_TYPE = 3; 974 /** 975 * HitTestResult for hitting an email address 976 */ 977 public static final int EMAIL_TYPE = 4; 978 /** 979 * HitTestResult for hitting an HTML::img tag 980 */ 981 public static final int IMAGE_TYPE = 5; 982 /** 983 * @deprecated This type is no longer used. 984 */ 985 @Deprecated 986 public static final int IMAGE_ANCHOR_TYPE = 6; 987 /** 988 * HitTestResult for hitting a HTML::a tag with src=http 989 */ 990 public static final int SRC_ANCHOR_TYPE = 7; 991 /** 992 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 993 */ 994 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 995 /** 996 * HitTestResult for hitting an edit text area 997 */ 998 public static final int EDIT_TEXT_TYPE = 9; 999 1000 private int mType; 1001 private String mExtra; 1002 1003 HitTestResult() { 1004 mType = UNKNOWN_TYPE; 1005 } 1006 1007 private void setType(int type) { 1008 mType = type; 1009 } 1010 1011 private void setExtra(String extra) { 1012 mExtra = extra; 1013 } 1014 1015 /** 1016 * Gets the type of the hit test result. 1017 * @return See the XXX_TYPE constants defined in this class. 1018 */ 1019 public int getType() { 1020 return mType; 1021 } 1022 1023 /** 1024 * Gets additional type-dependant information about the result, see 1025 * {@link WebView#getHitTestResult()} for details. 1026 * @return may either be null or contain extra information about this result. 1027 */ 1028 public String getExtra() { 1029 return mExtra; 1030 } 1031 } 1032 1033 /** 1034 * Construct a new WebView with a Context object. 1035 * @param context A Context object used to access application assets. 1036 */ 1037 public WebView(Context context) { 1038 this(context, null); 1039 } 1040 1041 /** 1042 * Construct a new WebView with layout parameters. 1043 * @param context A Context object used to access application assets. 1044 * @param attrs An AttributeSet passed to our parent. 1045 */ 1046 public WebView(Context context, AttributeSet attrs) { 1047 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1048 } 1049 1050 /** 1051 * Construct a new WebView with layout parameters and a default style. 1052 * @param context A Context object used to access application assets. 1053 * @param attrs An AttributeSet passed to our parent. 1054 * @param defStyle The default style resource ID. 1055 */ 1056 public WebView(Context context, AttributeSet attrs, int defStyle) { 1057 this(context, attrs, defStyle, false); 1058 } 1059 1060 /** 1061 * Construct a new WebView with layout parameters and a default style. 1062 * @param context A Context object used to access application assets. 1063 * @param attrs An AttributeSet passed to our parent. 1064 * @param defStyle The default style resource ID. 1065 * @param privateBrowsing If true the web view will be initialized in private mode. 1066 */ 1067 public WebView(Context context, AttributeSet attrs, int defStyle, 1068 boolean privateBrowsing) { 1069 this(context, attrs, defStyle, null, privateBrowsing); 1070 } 1071 1072 /** 1073 * Construct a new WebView with layout parameters, a default style and a set 1074 * of custom Javscript interfaces to be added to the WebView at initialization 1075 * time. This guarantees that these interfaces will be available when the JS 1076 * context is initialized. 1077 * @param context A Context object used to access application assets. 1078 * @param attrs An AttributeSet passed to our parent. 1079 * @param defStyle The default style resource ID. 1080 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1081 * object implementing those interfaces, as values. 1082 * @hide This is an implementation detail. 1083 * @param privateBrowsing If true the web view will be initialized in private mode. 1084 */ 1085 protected WebView(Context context, AttributeSet attrs, int defStyle, 1086 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1087 super(context, attrs, defStyle); 1088 checkThread(); 1089 1090 if (context == null) { 1091 throw new IllegalArgumentException("Invalid context argument"); 1092 } 1093 1094 // Used by the chrome stack to find application paths 1095 JniUtil.setContext(context); 1096 1097 mCallbackProxy = new CallbackProxy(context, this); 1098 mViewManager = new ViewManager(this); 1099 L10nUtils.setApplicationContext(context.getApplicationContext()); 1100 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1101 mDatabase = WebViewDatabase.getInstance(context); 1102 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1103 mZoomManager = new ZoomManager(this, mCallbackProxy); 1104 1105 /* The init method must follow the creation of certain member variables, 1106 * such as the mZoomManager. 1107 */ 1108 init(); 1109 setupPackageListener(context); 1110 setupProxyListener(context); 1111 updateMultiTouchSupport(context); 1112 1113 if (privateBrowsing) { 1114 startPrivateBrowsing(); 1115 } 1116 1117 mAutoFillData = new WebViewCore.AutoFillData(); 1118 } 1119 1120 private static class ProxyReceiver extends BroadcastReceiver { 1121 @Override 1122 public void onReceive(Context context, Intent intent) { 1123 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1124 handleProxyBroadcast(intent); 1125 } 1126 } 1127 } 1128 1129 /* 1130 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1131 */ 1132 private static ProxyReceiver sProxyReceiver; 1133 1134 /* 1135 * @param context This method expects this to be a valid context 1136 */ 1137 private static synchronized void setupProxyListener(Context context) { 1138 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1139 return; 1140 } 1141 IntentFilter filter = new IntentFilter(); 1142 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1143 sProxyReceiver = new ProxyReceiver(); 1144 Intent currentProxy = context.getApplicationContext().registerReceiver( 1145 sProxyReceiver, filter); 1146 if (currentProxy != null) { 1147 handleProxyBroadcast(currentProxy); 1148 } 1149 } 1150 1151 /* 1152 * @param context This method expects this to be a valid context 1153 */ 1154 private static synchronized void disableProxyListener(Context context) { 1155 if (sProxyReceiver == null) 1156 return; 1157 1158 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1159 sProxyReceiver = null; 1160 } 1161 1162 private static void handleProxyBroadcast(Intent intent) { 1163 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1164 if (proxyProperties == null || proxyProperties.getHost() == null) { 1165 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1166 return; 1167 } 1168 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1169 } 1170 1171 /* 1172 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1173 * or ACTION_PACKAGE_REMOVED. 1174 */ 1175 private static boolean sPackageInstallationReceiverAdded = false; 1176 1177 /* 1178 * A set of Google packages we monitor for the 1179 * navigator.isApplicationInstalled() API. Add additional packages as 1180 * needed. 1181 */ 1182 private static Set<String> sGoogleApps; 1183 static { 1184 sGoogleApps = new HashSet<String>(); 1185 sGoogleApps.add("com.google.android.youtube"); 1186 } 1187 1188 private static class PackageListener extends BroadcastReceiver { 1189 @Override 1190 public void onReceive(Context context, Intent intent) { 1191 final String action = intent.getAction(); 1192 final String packageName = intent.getData().getSchemeSpecificPart(); 1193 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1194 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1195 // if it is replacing, refreshPlugins() when adding 1196 return; 1197 } 1198 1199 if (sGoogleApps.contains(packageName)) { 1200 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1201 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1202 } else { 1203 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1204 } 1205 } 1206 1207 PluginManager pm = PluginManager.getInstance(context); 1208 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1209 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1210 } 1211 } 1212 } 1213 1214 private void setupPackageListener(Context context) { 1215 1216 /* 1217 * we must synchronize the instance check and the creation of the 1218 * receiver to ensure that only ONE receiver exists for all WebView 1219 * instances. 1220 */ 1221 synchronized (WebView.class) { 1222 1223 // if the receiver already exists then we do not need to register it 1224 // again 1225 if (sPackageInstallationReceiverAdded) { 1226 return; 1227 } 1228 1229 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1230 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1231 filter.addDataScheme("package"); 1232 BroadcastReceiver packageListener = new PackageListener(); 1233 context.getApplicationContext().registerReceiver(packageListener, filter); 1234 sPackageInstallationReceiverAdded = true; 1235 } 1236 1237 // check if any of the monitored apps are already installed 1238 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1239 1240 @Override 1241 protected Set<String> doInBackground(Void... unused) { 1242 Set<String> installedPackages = new HashSet<String>(); 1243 PackageManager pm = mContext.getPackageManager(); 1244 for (String name : sGoogleApps) { 1245 try { 1246 PackageInfo pInfo = pm.getPackageInfo(name, 1247 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1248 installedPackages.add(name); 1249 } catch (PackageManager.NameNotFoundException e) { 1250 // package not found 1251 } 1252 } 1253 return installedPackages; 1254 } 1255 1256 // Executes on the UI thread 1257 @Override 1258 protected void onPostExecute(Set<String> installedPackages) { 1259 if (mWebViewCore != null) { 1260 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1261 } 1262 } 1263 }; 1264 task.execute(); 1265 } 1266 1267 void updateMultiTouchSupport(Context context) { 1268 mZoomManager.updateMultiTouchSupport(context); 1269 } 1270 1271 private void init() { 1272 OnTrimMemoryListener.init(getContext()); 1273 1274 setWillNotDraw(false); 1275 setFocusable(true); 1276 setFocusableInTouchMode(true); 1277 setClickable(true); 1278 setLongClickable(true); 1279 1280 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1281 int slop = configuration.getScaledTouchSlop(); 1282 mTouchSlopSquare = slop * slop; 1283 slop = configuration.getScaledDoubleTapSlop(); 1284 mDoubleTapSlopSquare = slop * slop; 1285 final float density = getContext().getResources().getDisplayMetrics().density; 1286 // use one line height, 16 based on our current default font, for how 1287 // far we allow a touch be away from the edge of a link 1288 mNavSlop = (int) (16 * density); 1289 mZoomManager.init(density); 1290 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1291 1292 // Compute the inverse of the density squared. 1293 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1294 1295 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1296 mOverflingDistance = configuration.getScaledOverflingDistance(); 1297 1298 setScrollBarStyle(super.getScrollBarStyle()); 1299 // Initially use a size of two, since the user is likely to only hold 1300 // down two keys at a time (shift + another key) 1301 mKeysPressed = new Vector<Integer>(2); 1302 mHTML5VideoViewProxy = null ; 1303 } 1304 1305 @Override 1306 public boolean shouldDelayChildPressedState() { 1307 return true; 1308 } 1309 1310 /** 1311 * Adds accessibility APIs to JavaScript. 1312 * 1313 * Note: This method is responsible to performing the necessary 1314 * check if the accessibility APIs should be exposed. 1315 */ 1316 private void addAccessibilityApisToJavaScript() { 1317 if (AccessibilityManager.getInstance(mContext).isEnabled() 1318 && getSettings().getJavaScriptEnabled()) { 1319 // exposing the TTS for now ... 1320 final Context ctx = getContext(); 1321 if (ctx != null) { 1322 final String packageName = ctx.getPackageName(); 1323 if (packageName != null) { 1324 mTextToSpeech = new TextToSpeech(getContext(), null, null, 1325 packageName + ".**webview**"); 1326 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1327 } 1328 } 1329 } 1330 } 1331 1332 /** 1333 * Removes accessibility APIs from JavaScript. 1334 */ 1335 private void removeAccessibilityApisFromJavaScript() { 1336 // exposing the TTS for now ... 1337 if (mTextToSpeech != null) { 1338 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1339 mTextToSpeech.shutdown(); 1340 mTextToSpeech = null; 1341 } 1342 } 1343 1344 @Override 1345 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1346 super.onInitializeAccessibilityNodeInfo(info); 1347 info.setScrollable(isScrollableForAccessibility()); 1348 } 1349 1350 @Override 1351 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1352 super.onInitializeAccessibilityEvent(event); 1353 event.setScrollable(isScrollableForAccessibility()); 1354 event.setScrollX(mScrollX); 1355 event.setScrollY(mScrollY); 1356 final int convertedContentWidth = contentToViewX(getContentWidth()); 1357 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1358 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1359 final int convertedContentHeight = contentToViewY(getContentHeight()); 1360 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1361 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1362 } 1363 1364 private boolean isScrollableForAccessibility() { 1365 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1366 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1367 } 1368 1369 @Override 1370 public void setOverScrollMode(int mode) { 1371 super.setOverScrollMode(mode); 1372 if (mode != OVER_SCROLL_NEVER) { 1373 if (mOverScrollGlow == null) { 1374 mOverScrollGlow = new OverScrollGlow(this); 1375 } 1376 } else { 1377 mOverScrollGlow = null; 1378 } 1379 } 1380 1381 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1382 final float density = mContext.getResources().getDisplayMetrics().density 1383 * 100 / zoomDensity; 1384 updateDefaultZoomDensity(density); 1385 } 1386 1387 /* package */ void updateDefaultZoomDensity(float density) { 1388 mNavSlop = (int) (16 * density); 1389 mZoomManager.updateDefaultZoomDensity(density); 1390 } 1391 1392 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1393 String password, final Message resumeMsg) { 1394 boolean rVal = false; 1395 if (resumeMsg == null) { 1396 // null resumeMsg implies saving password silently 1397 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1398 } else { 1399 final Message remember = mPrivateHandler.obtainMessage( 1400 REMEMBER_PASSWORD); 1401 remember.getData().putString("host", schemePlusHost); 1402 remember.getData().putString("username", username); 1403 remember.getData().putString("password", password); 1404 remember.obj = resumeMsg; 1405 1406 final Message neverRemember = mPrivateHandler.obtainMessage( 1407 NEVER_REMEMBER_PASSWORD); 1408 neverRemember.getData().putString("host", schemePlusHost); 1409 neverRemember.getData().putString("username", username); 1410 neverRemember.getData().putString("password", password); 1411 neverRemember.obj = resumeMsg; 1412 1413 new AlertDialog.Builder(getContext()) 1414 .setTitle(com.android.internal.R.string.save_password_label) 1415 .setMessage(com.android.internal.R.string.save_password_message) 1416 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1417 new DialogInterface.OnClickListener() { 1418 public void onClick(DialogInterface dialog, int which) { 1419 resumeMsg.sendToTarget(); 1420 } 1421 }) 1422 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1423 new DialogInterface.OnClickListener() { 1424 public void onClick(DialogInterface dialog, int which) { 1425 remember.sendToTarget(); 1426 } 1427 }) 1428 .setNegativeButton(com.android.internal.R.string.save_password_never, 1429 new DialogInterface.OnClickListener() { 1430 public void onClick(DialogInterface dialog, int which) { 1431 neverRemember.sendToTarget(); 1432 } 1433 }) 1434 .setOnCancelListener(new OnCancelListener() { 1435 public void onCancel(DialogInterface dialog) { 1436 resumeMsg.sendToTarget(); 1437 } 1438 }).show(); 1439 // Return true so that WebViewCore will pause while the dialog is 1440 // up. 1441 rVal = true; 1442 } 1443 return rVal; 1444 } 1445 1446 @Override 1447 public void setScrollBarStyle(int style) { 1448 if (style == View.SCROLLBARS_INSIDE_INSET 1449 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1450 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1451 } else { 1452 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1453 } 1454 super.setScrollBarStyle(style); 1455 } 1456 1457 /** 1458 * Specify whether the horizontal scrollbar has overlay style. 1459 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1460 */ 1461 public void setHorizontalScrollbarOverlay(boolean overlay) { 1462 checkThread(); 1463 mOverlayHorizontalScrollbar = overlay; 1464 } 1465 1466 /** 1467 * Specify whether the vertical scrollbar has overlay style. 1468 * @param overlay TRUE if vertical scrollbar should have overlay style. 1469 */ 1470 public void setVerticalScrollbarOverlay(boolean overlay) { 1471 checkThread(); 1472 mOverlayVerticalScrollbar = overlay; 1473 } 1474 1475 /** 1476 * Return whether horizontal scrollbar has overlay style 1477 * @return TRUE if horizontal scrollbar has overlay style. 1478 */ 1479 public boolean overlayHorizontalScrollbar() { 1480 checkThread(); 1481 return mOverlayHorizontalScrollbar; 1482 } 1483 1484 /** 1485 * Return whether vertical scrollbar has overlay style 1486 * @return TRUE if vertical scrollbar has overlay style. 1487 */ 1488 public boolean overlayVerticalScrollbar() { 1489 checkThread(); 1490 return mOverlayVerticalScrollbar; 1491 } 1492 1493 /* 1494 * Return the width of the view where the content of WebView should render 1495 * to. 1496 * Note: this can be called from WebCoreThread. 1497 */ 1498 /* package */ int getViewWidth() { 1499 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1500 return getWidth(); 1501 } else { 1502 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1503 } 1504 } 1505 1506 /** 1507 * returns the height of the titlebarview (if any). Does not care about 1508 * scrolling 1509 * @hide 1510 */ 1511 protected int getTitleHeight() { 1512 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1513 } 1514 1515 /** 1516 * Return the amount of the titlebarview (if any) that is visible 1517 * 1518 * @deprecated This method is now obsolete. 1519 */ 1520 public int getVisibleTitleHeight() { 1521 checkThread(); 1522 return getVisibleTitleHeightImpl(); 1523 } 1524 1525 private int getVisibleTitleHeightImpl() { 1526 // need to restrict mScrollY due to over scroll 1527 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1528 getOverlappingActionModeHeight()); 1529 } 1530 1531 private int mCachedOverlappingActionModeHeight = -1; 1532 1533 private int getOverlappingActionModeHeight() { 1534 if (mFindCallback == null) { 1535 return 0; 1536 } 1537 if (mCachedOverlappingActionModeHeight < 0) { 1538 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1539 mCachedOverlappingActionModeHeight = Math.max(0, 1540 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1541 } 1542 return mCachedOverlappingActionModeHeight; 1543 } 1544 1545 /* 1546 * Return the height of the view where the content of WebView should render 1547 * to. Note that this excludes mTitleBar, if there is one. 1548 * Note: this can be called from WebCoreThread. 1549 */ 1550 /* package */ int getViewHeight() { 1551 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1552 } 1553 1554 int getViewHeightWithTitle() { 1555 int height = getHeight(); 1556 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1557 height -= getHorizontalScrollbarHeight(); 1558 } 1559 return height; 1560 } 1561 1562 /** 1563 * @return The SSL certificate for the main top-level page or null if 1564 * there is no certificate (the site is not secure). 1565 */ 1566 public SslCertificate getCertificate() { 1567 checkThread(); 1568 return mCertificate; 1569 } 1570 1571 /** 1572 * Sets the SSL certificate for the main top-level page. 1573 */ 1574 public void setCertificate(SslCertificate certificate) { 1575 checkThread(); 1576 if (DebugFlags.WEB_VIEW) { 1577 Log.v(LOGTAG, "setCertificate=" + certificate); 1578 } 1579 // here, the certificate can be null (if the site is not secure) 1580 mCertificate = certificate; 1581 } 1582 1583 //------------------------------------------------------------------------- 1584 // Methods called by activity 1585 //------------------------------------------------------------------------- 1586 1587 /** 1588 * Save the username and password for a particular host in the WebView's 1589 * internal database. 1590 * @param host The host that required the credentials. 1591 * @param username The username for the given host. 1592 * @param password The password for the given host. 1593 */ 1594 public void savePassword(String host, String username, String password) { 1595 checkThread(); 1596 mDatabase.setUsernamePassword(host, username, password); 1597 } 1598 1599 /** 1600 * Set the HTTP authentication credentials for a given host and realm. 1601 * 1602 * @param host The host for the credentials. 1603 * @param realm The realm for the credentials. 1604 * @param username The username for the password. If it is null, it means 1605 * password can't be saved. 1606 * @param password The password 1607 */ 1608 public void setHttpAuthUsernamePassword(String host, String realm, 1609 String username, String password) { 1610 checkThread(); 1611 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1612 } 1613 1614 /** 1615 * Retrieve the HTTP authentication username and password for a given 1616 * host & realm pair 1617 * 1618 * @param host The host for which the credentials apply. 1619 * @param realm The realm for which the credentials apply. 1620 * @return String[] if found, String[0] is username, which can be null and 1621 * String[1] is password. Return null if it can't find anything. 1622 */ 1623 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1624 checkThread(); 1625 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1626 } 1627 1628 /** 1629 * Remove Find or Select ActionModes, if active. 1630 */ 1631 private void clearActionModes() { 1632 if (mSelectCallback != null) { 1633 mSelectCallback.finish(); 1634 } 1635 if (mFindCallback != null) { 1636 mFindCallback.finish(); 1637 } 1638 } 1639 1640 /** 1641 * Called to clear state when moving from one page to another, or changing 1642 * in some other way that makes elements associated with the current page 1643 * (such as WebTextView or ActionModes) no longer relevant. 1644 */ 1645 private void clearHelpers() { 1646 clearTextEntry(); 1647 clearActionModes(); 1648 dismissFullScreenMode(); 1649 cancelSelectDialog(); 1650 } 1651 1652 private void cancelSelectDialog() { 1653 if (mListBoxDialog != null) { 1654 mListBoxDialog.cancel(); 1655 mListBoxDialog = null; 1656 } 1657 } 1658 1659 /** 1660 * Destroy the internal state of the WebView. This method should be called 1661 * after the WebView has been removed from the view system. No other 1662 * methods may be called on a WebView after destroy. 1663 */ 1664 public void destroy() { 1665 checkThread(); 1666 destroyImpl(); 1667 } 1668 1669 private void destroyImpl() { 1670 clearHelpers(); 1671 if (mListBoxDialog != null) { 1672 mListBoxDialog.dismiss(); 1673 mListBoxDialog = null; 1674 } 1675 // remove so that it doesn't cause events 1676 if (mWebTextView != null) { 1677 mWebTextView.remove(); 1678 mWebTextView = null; 1679 } 1680 if (mNativeClass != 0) nativeStopGL(); 1681 if (mWebViewCore != null) { 1682 // Set the handlers to null before destroying WebViewCore so no 1683 // more messages will be posted. 1684 mCallbackProxy.setWebViewClient(null); 1685 mCallbackProxy.setWebChromeClient(null); 1686 // Tell WebViewCore to destroy itself 1687 synchronized (this) { 1688 WebViewCore webViewCore = mWebViewCore; 1689 mWebViewCore = null; // prevent using partial webViewCore 1690 webViewCore.destroy(); 1691 } 1692 // Remove any pending messages that might not be serviced yet. 1693 mPrivateHandler.removeCallbacksAndMessages(null); 1694 mCallbackProxy.removeCallbacksAndMessages(null); 1695 // Wake up the WebCore thread just in case it is waiting for a 1696 // JavaScript dialog. 1697 synchronized (mCallbackProxy) { 1698 mCallbackProxy.notify(); 1699 } 1700 } 1701 if (mNativeClass != 0) { 1702 nativeDestroy(); 1703 mNativeClass = 0; 1704 } 1705 } 1706 1707 /** 1708 * Enables platform notifications of data state and proxy changes. 1709 * Notifications are enabled by default. 1710 * 1711 * @deprecated This method is now obsolete. 1712 */ 1713 @Deprecated 1714 public static void enablePlatformNotifications() { 1715 checkThread(); 1716 synchronized (WebView.class) { 1717 Network.enablePlatformNotifications(); 1718 sNotificationsEnabled = true; 1719 Context context = JniUtil.getContext(); 1720 if (context != null) 1721 setupProxyListener(context); 1722 } 1723 } 1724 1725 /** 1726 * Disables platform notifications of data state and proxy changes. 1727 * Notifications are enabled by default. 1728 * 1729 * @deprecated This method is now obsolete. 1730 */ 1731 @Deprecated 1732 public static void disablePlatformNotifications() { 1733 checkThread(); 1734 synchronized (WebView.class) { 1735 Network.disablePlatformNotifications(); 1736 sNotificationsEnabled = false; 1737 Context context = JniUtil.getContext(); 1738 if (context != null) 1739 disableProxyListener(context); 1740 } 1741 } 1742 1743 /** 1744 * Sets JavaScript engine flags. 1745 * 1746 * @param flags JS engine flags in a String 1747 * 1748 * @hide This is an implementation detail. 1749 */ 1750 public void setJsFlags(String flags) { 1751 checkThread(); 1752 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1753 } 1754 1755 /** 1756 * Inform WebView of the network state. This is used to set 1757 * the JavaScript property window.navigator.isOnline and 1758 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1759 * @param networkUp boolean indicating if network is available 1760 */ 1761 public void setNetworkAvailable(boolean networkUp) { 1762 checkThread(); 1763 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1764 networkUp ? 1 : 0, 0); 1765 } 1766 1767 /** 1768 * Inform WebView about the current network type. 1769 * {@hide} 1770 */ 1771 public void setNetworkType(String type, String subtype) { 1772 checkThread(); 1773 Map<String, String> map = new HashMap<String, String>(); 1774 map.put("type", type); 1775 map.put("subtype", subtype); 1776 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1777 } 1778 /** 1779 * Save the state of this WebView used in 1780 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1781 * method no longer stores the display data for this WebView. The previous 1782 * behavior could potentially leak files if {@link #restoreState} was never 1783 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1784 * and restoring the display data. 1785 * @param outState The Bundle to store the WebView state. 1786 * @return The same copy of the back/forward list used to save the state. If 1787 * saveState fails, the returned list will be null. 1788 * @see #savePicture 1789 * @see #restorePicture 1790 */ 1791 public WebBackForwardList saveState(Bundle outState) { 1792 checkThread(); 1793 if (outState == null) { 1794 return null; 1795 } 1796 // We grab a copy of the back/forward list because a client of WebView 1797 // may have invalidated the history list by calling clearHistory. 1798 WebBackForwardList list = copyBackForwardList(); 1799 final int currentIndex = list.getCurrentIndex(); 1800 final int size = list.getSize(); 1801 // We should fail saving the state if the list is empty or the index is 1802 // not in a valid range. 1803 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1804 return null; 1805 } 1806 outState.putInt("index", currentIndex); 1807 // FIXME: This should just be a byte[][] instead of ArrayList but 1808 // Parcel.java does not have the code to handle multi-dimensional 1809 // arrays. 1810 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1811 for (int i = 0; i < size; i++) { 1812 WebHistoryItem item = list.getItemAtIndex(i); 1813 if (null == item) { 1814 // FIXME: this shouldn't happen 1815 // need to determine how item got set to null 1816 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1817 return null; 1818 } 1819 byte[] data = item.getFlattenedData(); 1820 if (data == null) { 1821 // It would be very odd to not have any data for a given history 1822 // item. And we will fail to rebuild the history list without 1823 // flattened data. 1824 return null; 1825 } 1826 history.add(data); 1827 } 1828 outState.putSerializable("history", history); 1829 if (mCertificate != null) { 1830 outState.putBundle("certificate", 1831 SslCertificate.saveState(mCertificate)); 1832 } 1833 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1834 mZoomManager.saveZoomState(outState); 1835 return list; 1836 } 1837 1838 /** 1839 * Save the current display data to the Bundle given. Used in conjunction 1840 * with {@link #saveState}. 1841 * @param b A Bundle to store the display data. 1842 * @param dest The file to store the serialized picture data. Will be 1843 * overwritten with this WebView's picture data. 1844 * @return True if the picture was successfully saved. 1845 * @deprecated This method is now obsolete. 1846 */ 1847 @Deprecated 1848 public boolean savePicture(Bundle b, final File dest) { 1849 checkThread(); 1850 if (dest == null || b == null) { 1851 return false; 1852 } 1853 final Picture p = capturePicture(); 1854 // Use a temporary file while writing to ensure the destination file 1855 // contains valid data. 1856 final File temp = new File(dest.getPath() + ".writing"); 1857 new Thread(new Runnable() { 1858 public void run() { 1859 FileOutputStream out = null; 1860 try { 1861 out = new FileOutputStream(temp); 1862 p.writeToStream(out); 1863 // Writing the picture succeeded, rename the temporary file 1864 // to the destination. 1865 temp.renameTo(dest); 1866 } catch (Exception e) { 1867 // too late to do anything about it. 1868 } finally { 1869 if (out != null) { 1870 try { 1871 out.close(); 1872 } catch (Exception e) { 1873 // Can't do anything about that 1874 } 1875 } 1876 temp.delete(); 1877 } 1878 } 1879 }).start(); 1880 // now update the bundle 1881 b.putInt("scrollX", mScrollX); 1882 b.putInt("scrollY", mScrollY); 1883 mZoomManager.saveZoomState(b); 1884 return true; 1885 } 1886 1887 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1888 int sx = b.getInt("scrollX", 0); 1889 int sy = b.getInt("scrollY", 0); 1890 1891 mDrawHistory = true; 1892 mHistoryPicture = p; 1893 1894 mScrollX = sx; 1895 mScrollY = sy; 1896 mZoomManager.restoreZoomState(b); 1897 final float scale = mZoomManager.getScale(); 1898 mHistoryWidth = Math.round(p.getWidth() * scale); 1899 mHistoryHeight = Math.round(p.getHeight() * scale); 1900 1901 invalidate(); 1902 } 1903 1904 /** 1905 * Restore the display data that was save in {@link #savePicture}. Used in 1906 * conjunction with {@link #restoreState}. 1907 * 1908 * Note that this will not work if the WebView is hardware accelerated. 1909 * @param b A Bundle containing the saved display data. 1910 * @param src The file where the picture data was stored. 1911 * @return True if the picture was successfully restored. 1912 * @deprecated This method is now obsolete. 1913 */ 1914 @Deprecated 1915 public boolean restorePicture(Bundle b, File src) { 1916 checkThread(); 1917 if (src == null || b == null) { 1918 return false; 1919 } 1920 if (!src.exists()) { 1921 return false; 1922 } 1923 try { 1924 final FileInputStream in = new FileInputStream(src); 1925 final Bundle copy = new Bundle(b); 1926 new Thread(new Runnable() { 1927 public void run() { 1928 try { 1929 final Picture p = Picture.createFromStream(in); 1930 if (p != null) { 1931 // Post a runnable on the main thread to update the 1932 // history picture fields. 1933 mPrivateHandler.post(new Runnable() { 1934 public void run() { 1935 restoreHistoryPictureFields(p, copy); 1936 } 1937 }); 1938 } 1939 } finally { 1940 try { 1941 in.close(); 1942 } catch (Exception e) { 1943 // Nothing we can do now. 1944 } 1945 } 1946 } 1947 }).start(); 1948 } catch (FileNotFoundException e){ 1949 e.printStackTrace(); 1950 } 1951 return true; 1952 } 1953 1954 /** 1955 * Saves the view data to the output stream. The output is highly 1956 * version specific, and may not be able to be loaded by newer versions 1957 * of WebView. 1958 * @param stream The {@link OutputStream} to save to 1959 * @return True if saved successfully 1960 * @hide 1961 */ 1962 public boolean saveViewState(OutputStream stream) { 1963 try { 1964 return ViewStateSerializer.serializeViewState(stream, this); 1965 } catch (IOException e) { 1966 Log.w(LOGTAG, "Failed to saveViewState", e); 1967 } 1968 return false; 1969 } 1970 1971 /** 1972 * Loads the view data from the input stream. See 1973 * {@link #saveViewState(OutputStream)} for more information. 1974 * @param stream The {@link InputStream} to load from 1975 * @return True if loaded successfully 1976 * @hide 1977 */ 1978 public boolean loadViewState(InputStream stream) { 1979 try { 1980 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1981 mBlockWebkitViewMessages = true; 1982 setNewPicture(mLoadedPicture, true); 1983 mLoadedPicture.mViewState = null; 1984 return true; 1985 } catch (IOException e) { 1986 Log.w(LOGTAG, "Failed to loadViewState", e); 1987 } 1988 return false; 1989 } 1990 1991 /** 1992 * Clears the view state set with {@link #loadViewState(InputStream)}. 1993 * This WebView will then switch to showing the content from webkit 1994 * @hide 1995 */ 1996 public void clearViewState() { 1997 mBlockWebkitViewMessages = false; 1998 mLoadedPicture = null; 1999 invalidate(); 2000 } 2001 2002 /** 2003 * Restore the state of this WebView from the given map used in 2004 * {@link android.app.Activity#onRestoreInstanceState}. This method should 2005 * be called to restore the state of the WebView before using the object. If 2006 * it is called after the WebView has had a chance to build state (load 2007 * pages, create a back/forward list, etc.) there may be undesirable 2008 * side-effects. Please note that this method no longer restores the 2009 * display data for this WebView. See {@link #savePicture} and {@link 2010 * #restorePicture} for saving and restoring the display data. 2011 * @param inState The incoming Bundle of state. 2012 * @return The restored back/forward list or null if restoreState failed. 2013 * @see #savePicture 2014 * @see #restorePicture 2015 */ 2016 public WebBackForwardList restoreState(Bundle inState) { 2017 checkThread(); 2018 WebBackForwardList returnList = null; 2019 if (inState == null) { 2020 return returnList; 2021 } 2022 if (inState.containsKey("index") && inState.containsKey("history")) { 2023 mCertificate = SslCertificate.restoreState( 2024 inState.getBundle("certificate")); 2025 2026 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2027 final int index = inState.getInt("index"); 2028 // We can't use a clone of the list because we need to modify the 2029 // shared copy, so synchronize instead to prevent concurrent 2030 // modifications. 2031 synchronized (list) { 2032 final List<byte[]> history = 2033 (List<byte[]>) inState.getSerializable("history"); 2034 final int size = history.size(); 2035 // Check the index bounds so we don't crash in native code while 2036 // restoring the history index. 2037 if (index < 0 || index >= size) { 2038 return null; 2039 } 2040 for (int i = 0; i < size; i++) { 2041 byte[] data = history.remove(0); 2042 if (data == null) { 2043 // If we somehow have null data, we cannot reconstruct 2044 // the item and thus our history list cannot be rebuilt. 2045 return null; 2046 } 2047 WebHistoryItem item = new WebHistoryItem(data); 2048 list.addHistoryItem(item); 2049 } 2050 // Grab the most recent copy to return to the caller. 2051 returnList = copyBackForwardList(); 2052 // Update the copy to have the correct index. 2053 returnList.setCurrentIndex(index); 2054 } 2055 // Restore private browsing setting. 2056 if (inState.getBoolean("privateBrowsingEnabled")) { 2057 getSettings().setPrivateBrowsingEnabled(true); 2058 } 2059 mZoomManager.restoreZoomState(inState); 2060 // Remove all pending messages because we are restoring previous 2061 // state. 2062 mWebViewCore.removeMessages(); 2063 // Send a restore state message. 2064 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2065 } 2066 return returnList; 2067 } 2068 2069 /** 2070 * Load the given URL with the specified additional HTTP headers. 2071 * @param url The URL of the resource to load. 2072 * @param additionalHttpHeaders The additional headers to be used in the 2073 * HTTP request for this URL, specified as a map from name to 2074 * value. Note that if this map contains any of the headers 2075 * that are set by default by the WebView, such as those 2076 * controlling caching, accept types or the User-Agent, their 2077 * values may be overriden by the WebView's defaults. 2078 */ 2079 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2080 checkThread(); 2081 loadUrlImpl(url, additionalHttpHeaders); 2082 } 2083 2084 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2085 switchOutDrawHistory(); 2086 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2087 arg.mUrl = url; 2088 arg.mExtraHeaders = extraHeaders; 2089 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2090 clearHelpers(); 2091 } 2092 2093 /** 2094 * Load the given URL. 2095 * @param url The URL of the resource to load. 2096 */ 2097 public void loadUrl(String url) { 2098 checkThread(); 2099 loadUrlImpl(url); 2100 } 2101 2102 private void loadUrlImpl(String url) { 2103 if (url == null) { 2104 return; 2105 } 2106 loadUrlImpl(url, null); 2107 } 2108 2109 /** 2110 * Load the url with postData using "POST" method into the WebView. If url 2111 * is not a network url, it will be loaded with {link 2112 * {@link #loadUrl(String)} instead. 2113 * 2114 * @param url The url of the resource to load. 2115 * @param postData The data will be passed to "POST" request. 2116 */ 2117 public void postUrl(String url, byte[] postData) { 2118 checkThread(); 2119 if (URLUtil.isNetworkUrl(url)) { 2120 switchOutDrawHistory(); 2121 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2122 arg.mUrl = url; 2123 arg.mPostData = postData; 2124 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2125 clearHelpers(); 2126 } else { 2127 loadUrlImpl(url); 2128 } 2129 } 2130 2131 /** 2132 * Load the given data into the WebView using a 'data' scheme URL. 2133 * <p> 2134 * Note that JavaScript's same origin policy means that script running in a 2135 * page loaded using this method will be unable to access content loaded 2136 * using any scheme other than 'data', including 'http(s)'. To avoid this 2137 * restriction, use {@link 2138 * #loadDataWithBaseURL(String,String,String,String,String) 2139 * loadDataWithBaseURL()} with an appropriate base URL. 2140 * <p> 2141 * If the value of the encoding parameter is 'base64', then the data must 2142 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2143 * octets inside the range of safe URL characters and use the standard %xx 2144 * hex encoding of URLs for octets outside that range. For example, 2145 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2146 * <p> 2147 * The 'data' scheme URL formed by this method uses the default US-ASCII 2148 * charset. If you need need to set a different charset, you should form a 2149 * 'data' scheme URL which explicitly specifies a charset parameter in the 2150 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2151 * Note that the charset obtained from the mediatype portion of a data URL 2152 * always overrides that specified in the HTML or XML document itself. 2153 * @param data A String of data in the given encoding. 2154 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2155 * @param encoding The encoding of the data. 2156 */ 2157 public void loadData(String data, String mimeType, String encoding) { 2158 checkThread(); 2159 loadDataImpl(data, mimeType, encoding); 2160 } 2161 2162 private void loadDataImpl(String data, String mimeType, String encoding) { 2163 StringBuilder dataUrl = new StringBuilder("data:"); 2164 dataUrl.append(mimeType); 2165 if ("base64".equals(encoding)) { 2166 dataUrl.append(";base64"); 2167 } 2168 dataUrl.append(","); 2169 dataUrl.append(data); 2170 loadUrlImpl(dataUrl.toString()); 2171 } 2172 2173 /** 2174 * Load the given data into the WebView, using baseUrl as the base URL for 2175 * the content. The base URL is used both to resolve relative URLs and when 2176 * applying JavaScript's same origin policy. The historyUrl is used for the 2177 * history entry. 2178 * <p> 2179 * Note that content specified in this way can access local device files 2180 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2181 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2182 * <p> 2183 * If the base URL uses the data scheme, this method is equivalent to 2184 * calling {@link #loadData(String,String,String) loadData()} and the 2185 * historyUrl is ignored. 2186 * @param baseUrl URL to use as the page's base URL. If null defaults to 2187 * 'about:blank' 2188 * @param data A String of data in the given encoding. 2189 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2190 * defaults to 'text/html'. 2191 * @param encoding The encoding of the data. 2192 * @param historyUrl URL to use as the history entry, if null defaults to 2193 * 'about:blank'. 2194 */ 2195 public void loadDataWithBaseURL(String baseUrl, String data, 2196 String mimeType, String encoding, String historyUrl) { 2197 checkThread(); 2198 2199 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2200 loadDataImpl(data, mimeType, encoding); 2201 return; 2202 } 2203 switchOutDrawHistory(); 2204 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2205 arg.mBaseUrl = baseUrl; 2206 arg.mData = data; 2207 arg.mMimeType = mimeType; 2208 arg.mEncoding = encoding; 2209 arg.mHistoryUrl = historyUrl; 2210 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2211 clearHelpers(); 2212 } 2213 2214 /** 2215 * Saves the current view as a web archive. 2216 * 2217 * @param filename The filename where the archive should be placed. 2218 */ 2219 public void saveWebArchive(String filename) { 2220 checkThread(); 2221 saveWebArchiveImpl(filename, false, null); 2222 } 2223 2224 /* package */ static class SaveWebArchiveMessage { 2225 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2226 mBasename = basename; 2227 mAutoname = autoname; 2228 mCallback = callback; 2229 } 2230 2231 /* package */ final String mBasename; 2232 /* package */ final boolean mAutoname; 2233 /* package */ final ValueCallback<String> mCallback; 2234 /* package */ String mResultFile; 2235 } 2236 2237 /** 2238 * Saves the current view as a web archive. 2239 * 2240 * @param basename The filename where the archive should be placed. 2241 * @param autoname If false, takes basename to be a file. If true, basename 2242 * is assumed to be a directory in which a filename will be 2243 * chosen according to the url of the current page. 2244 * @param callback Called after the web archive has been saved. The 2245 * parameter for onReceiveValue will either be the filename 2246 * under which the file was saved, or null if saving the 2247 * file failed. 2248 */ 2249 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2250 checkThread(); 2251 saveWebArchiveImpl(basename, autoname, callback); 2252 } 2253 2254 private void saveWebArchiveImpl(String basename, boolean autoname, 2255 ValueCallback<String> callback) { 2256 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2257 new SaveWebArchiveMessage(basename, autoname, callback)); 2258 } 2259 2260 /** 2261 * Stop the current load. 2262 */ 2263 public void stopLoading() { 2264 checkThread(); 2265 // TODO: should we clear all the messages in the queue before sending 2266 // STOP_LOADING? 2267 switchOutDrawHistory(); 2268 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2269 } 2270 2271 /** 2272 * Reload the current url. 2273 */ 2274 public void reload() { 2275 checkThread(); 2276 clearHelpers(); 2277 switchOutDrawHistory(); 2278 mWebViewCore.sendMessage(EventHub.RELOAD); 2279 } 2280 2281 /** 2282 * Return true if this WebView has a back history item. 2283 * @return True iff this WebView has a back history item. 2284 */ 2285 public boolean canGoBack() { 2286 checkThread(); 2287 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2288 synchronized (l) { 2289 if (l.getClearPending()) { 2290 return false; 2291 } else { 2292 return l.getCurrentIndex() > 0; 2293 } 2294 } 2295 } 2296 2297 /** 2298 * Go back in the history of this WebView. 2299 */ 2300 public void goBack() { 2301 checkThread(); 2302 goBackOrForwardImpl(-1); 2303 } 2304 2305 /** 2306 * Return true if this WebView has a forward history item. 2307 * @return True iff this Webview has a forward history item. 2308 */ 2309 public boolean canGoForward() { 2310 checkThread(); 2311 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2312 synchronized (l) { 2313 if (l.getClearPending()) { 2314 return false; 2315 } else { 2316 return l.getCurrentIndex() < l.getSize() - 1; 2317 } 2318 } 2319 } 2320 2321 /** 2322 * Go forward in the history of this WebView. 2323 */ 2324 public void goForward() { 2325 checkThread(); 2326 goBackOrForwardImpl(1); 2327 } 2328 2329 /** 2330 * Return true if the page can go back or forward the given 2331 * number of steps. 2332 * @param steps The negative or positive number of steps to move the 2333 * history. 2334 */ 2335 public boolean canGoBackOrForward(int steps) { 2336 checkThread(); 2337 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2338 synchronized (l) { 2339 if (l.getClearPending()) { 2340 return false; 2341 } else { 2342 int newIndex = l.getCurrentIndex() + steps; 2343 return newIndex >= 0 && newIndex < l.getSize(); 2344 } 2345 } 2346 } 2347 2348 /** 2349 * Go to the history item that is the number of steps away from 2350 * the current item. Steps is negative if backward and positive 2351 * if forward. 2352 * @param steps The number of steps to take back or forward in the back 2353 * forward list. 2354 */ 2355 public void goBackOrForward(int steps) { 2356 checkThread(); 2357 goBackOrForwardImpl(steps); 2358 } 2359 2360 private void goBackOrForwardImpl(int steps) { 2361 goBackOrForward(steps, false); 2362 } 2363 2364 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2365 if (steps != 0) { 2366 clearHelpers(); 2367 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2368 ignoreSnapshot ? 1 : 0); 2369 } 2370 } 2371 2372 /** 2373 * Returns true if private browsing is enabled in this WebView. 2374 */ 2375 public boolean isPrivateBrowsingEnabled() { 2376 checkThread(); 2377 return getSettings().isPrivateBrowsingEnabled(); 2378 } 2379 2380 private void startPrivateBrowsing() { 2381 getSettings().setPrivateBrowsingEnabled(true); 2382 } 2383 2384 private boolean extendScroll(int y) { 2385 int finalY = mScroller.getFinalY(); 2386 int newY = pinLocY(finalY + y); 2387 if (newY == finalY) return false; 2388 mScroller.setFinalY(newY); 2389 mScroller.extendDuration(computeDuration(0, y)); 2390 return true; 2391 } 2392 2393 /** 2394 * Scroll the contents of the view up by half the view size 2395 * @param top true to jump to the top of the page 2396 * @return true if the page was scrolled 2397 */ 2398 public boolean pageUp(boolean top) { 2399 checkThread(); 2400 if (mNativeClass == 0) { 2401 return false; 2402 } 2403 nativeClearCursor(); // start next trackball movement from page edge 2404 if (top) { 2405 // go to the top of the document 2406 return pinScrollTo(mScrollX, 0, true, 0); 2407 } 2408 // Page up 2409 int h = getHeight(); 2410 int y; 2411 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2412 y = -h + PAGE_SCROLL_OVERLAP; 2413 } else { 2414 y = -h / 2; 2415 } 2416 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2417 : extendScroll(y); 2418 } 2419 2420 /** 2421 * Scroll the contents of the view down by half the page size 2422 * @param bottom true to jump to bottom of page 2423 * @return true if the page was scrolled 2424 */ 2425 public boolean pageDown(boolean bottom) { 2426 checkThread(); 2427 if (mNativeClass == 0) { 2428 return false; 2429 } 2430 nativeClearCursor(); // start next trackball movement from page edge 2431 if (bottom) { 2432 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2433 } 2434 // Page down. 2435 int h = getHeight(); 2436 int y; 2437 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2438 y = h - PAGE_SCROLL_OVERLAP; 2439 } else { 2440 y = h / 2; 2441 } 2442 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2443 : extendScroll(y); 2444 } 2445 2446 /** 2447 * Clear the view so that onDraw() will draw nothing but white background, 2448 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2449 */ 2450 public void clearView() { 2451 checkThread(); 2452 mContentWidth = 0; 2453 mContentHeight = 0; 2454 setBaseLayer(0, null, false, false, false); 2455 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2456 } 2457 2458 /** 2459 * Return a new picture that captures the current display of the webview. 2460 * This is a copy of the display, and will be unaffected if the webview 2461 * later loads a different URL. 2462 * 2463 * @return a picture containing the current contents of the view. Note this 2464 * picture is of the entire document, and is not restricted to the 2465 * bounds of the view. 2466 */ 2467 public Picture capturePicture() { 2468 checkThread(); 2469 if (mNativeClass == 0) return null; 2470 Picture result = new Picture(); 2471 nativeCopyBaseContentToPicture(result); 2472 return result; 2473 } 2474 2475 /** 2476 * Return true if the browser is displaying a TextView for text input. 2477 */ 2478 private boolean inEditingMode() { 2479 return mWebTextView != null && mWebTextView.getParent() != null; 2480 } 2481 2482 /** 2483 * Remove the WebTextView. 2484 */ 2485 private void clearTextEntry() { 2486 if (inEditingMode()) { 2487 mWebTextView.remove(); 2488 } else { 2489 // The keyboard may be open with the WebView as the served view 2490 hideSoftKeyboard(); 2491 } 2492 } 2493 2494 /** 2495 * Return the current scale of the WebView 2496 * @return The current scale. 2497 */ 2498 public float getScale() { 2499 checkThread(); 2500 return mZoomManager.getScale(); 2501 } 2502 2503 // Called by JNI. Returns the scale to apply to the text selection handles 2504 /* package */ float getTextHandleScale() { 2505 float density = mContext.getResources().getDisplayMetrics().density; 2506 return density / getScale(); 2507 } 2508 2509 /** 2510 * Compute the reading level scale of the WebView 2511 * @param scale The current scale. 2512 * @return The reading level scale. 2513 */ 2514 /*package*/ float computeReadingLevelScale(float scale) { 2515 return mZoomManager.computeReadingLevelScale(scale); 2516 } 2517 2518 /** 2519 * Set the initial scale for the WebView. 0 means default. If 2520 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2521 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2522 * WebView starts with this value as initial scale. 2523 * Please note that unlike the scale properties in the viewport meta tag, 2524 * this method doesn't take the screen density into account. 2525 * 2526 * @param scaleInPercent The initial scale in percent. 2527 */ 2528 public void setInitialScale(int scaleInPercent) { 2529 checkThread(); 2530 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2531 } 2532 2533 /** 2534 * Invoke the graphical zoom picker widget for this WebView. This will 2535 * result in the zoom widget appearing on the screen to control the zoom 2536 * level of this WebView. 2537 */ 2538 public void invokeZoomPicker() { 2539 checkThread(); 2540 if (!getSettings().supportZoom()) { 2541 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2542 return; 2543 } 2544 clearHelpers(); 2545 mZoomManager.invokeZoomPicker(); 2546 } 2547 2548 /** 2549 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2550 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2551 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2552 * anchor does not have a url or if it is a JavaScript url, the type will 2553 * be UNKNOWN_TYPE and the url has to be retrieved through 2554 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2555 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2556 * the "extra" field. A type of 2557 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2558 * a child node. If a phone number is found, the HitTestResult type is set 2559 * to PHONE_TYPE and the phone number is set in the "extra" field of 2560 * HitTestResult. If a map address is found, the HitTestResult type is set 2561 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2562 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2563 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2564 * HitTestResult type is set to UNKNOWN_TYPE. 2565 */ 2566 public HitTestResult getHitTestResult() { 2567 checkThread(); 2568 return hitTestResult(mInitialHitTestResult); 2569 } 2570 2571 private HitTestResult hitTestResult(HitTestResult fallback) { 2572 if (mNativeClass == 0) { 2573 return null; 2574 } 2575 2576 HitTestResult result = new HitTestResult(); 2577 if (nativeHasCursorNode()) { 2578 if (nativeCursorIsTextInput()) { 2579 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2580 } else { 2581 String text = nativeCursorText(); 2582 if (text != null) { 2583 if (text.startsWith(SCHEME_TEL)) { 2584 result.setType(HitTestResult.PHONE_TYPE); 2585 result.setExtra(URLDecoder.decode(text 2586 .substring(SCHEME_TEL.length()))); 2587 } else if (text.startsWith(SCHEME_MAILTO)) { 2588 result.setType(HitTestResult.EMAIL_TYPE); 2589 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2590 } else if (text.startsWith(SCHEME_GEO)) { 2591 result.setType(HitTestResult.GEO_TYPE); 2592 result.setExtra(URLDecoder.decode(text 2593 .substring(SCHEME_GEO.length()))); 2594 } else if (nativeCursorIsAnchor()) { 2595 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2596 result.setExtra(text); 2597 } 2598 } 2599 } 2600 } else if (fallback != null) { 2601 /* If webkit causes a rebuild while the long press is in progress, 2602 * the cursor node may be reset, even if it is still around. This 2603 * uses the cursor node saved when the touch began. Since the 2604 * nativeImageURI below only changes the result if it is successful, 2605 * this uses the data beneath the touch if available or the original 2606 * tap data otherwise. 2607 */ 2608 Log.v(LOGTAG, "hitTestResult use fallback"); 2609 result = fallback; 2610 } 2611 int type = result.getType(); 2612 if (type == HitTestResult.UNKNOWN_TYPE 2613 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2614 // Now check to see if it is an image. 2615 int contentX = viewToContentX(mLastTouchX + mScrollX); 2616 int contentY = viewToContentY(mLastTouchY + mScrollY); 2617 String text = nativeImageURI(contentX, contentY); 2618 if (text != null) { 2619 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2620 HitTestResult.IMAGE_TYPE : 2621 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2622 result.setExtra(text); 2623 } 2624 } 2625 return result; 2626 } 2627 2628 // Called by JNI when the DOM has changed the focus. Clear the focus so 2629 // that new keys will go to the newly focused field 2630 private void domChangedFocus() { 2631 if (inEditingMode()) { 2632 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2633 } 2634 } 2635 /** 2636 * Request the anchor or image element URL at the last tapped point. 2637 * If hrefMsg is null, this method returns immediately and does not 2638 * dispatch hrefMsg to its target. If the tapped point hits an image, 2639 * an anchor, or an image in an anchor, the message associates 2640 * strings in named keys in its data. The value paired with the key 2641 * may be an empty string. 2642 * 2643 * @param hrefMsg This message will be dispatched with the result of the 2644 * request. The message data contains three keys: 2645 * - "url" returns the anchor's href attribute. 2646 * - "title" returns the anchor's text. 2647 * - "src" returns the image's src attribute. 2648 */ 2649 public void requestFocusNodeHref(Message hrefMsg) { 2650 checkThread(); 2651 if (hrefMsg == null) { 2652 return; 2653 } 2654 int contentX = viewToContentX(mLastTouchX + mScrollX); 2655 int contentY = viewToContentY(mLastTouchY + mScrollY); 2656 if (nativeHasCursorNode()) { 2657 Rect cursorBounds = nativeGetCursorRingBounds(); 2658 if (!cursorBounds.contains(contentX, contentY)) { 2659 int slop = viewToContentDimension(mNavSlop); 2660 cursorBounds.inset(-slop, -slop); 2661 if (cursorBounds.contains(contentX, contentY)) { 2662 contentX = (int) cursorBounds.centerX(); 2663 contentY = (int) cursorBounds.centerY(); 2664 } 2665 } 2666 } 2667 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2668 contentX, contentY, hrefMsg); 2669 } 2670 2671 /** 2672 * Request the url of the image last touched by the user. msg will be sent 2673 * to its target with a String representing the url as its object. 2674 * 2675 * @param msg This message will be dispatched with the result of the request 2676 * as the data member with "url" as key. The result can be null. 2677 */ 2678 public void requestImageRef(Message msg) { 2679 checkThread(); 2680 if (0 == mNativeClass) return; // client isn't initialized 2681 int contentX = viewToContentX(mLastTouchX + mScrollX); 2682 int contentY = viewToContentY(mLastTouchY + mScrollY); 2683 String ref = nativeImageURI(contentX, contentY); 2684 Bundle data = msg.getData(); 2685 data.putString("url", ref); 2686 msg.setData(data); 2687 msg.sendToTarget(); 2688 } 2689 2690 static int pinLoc(int x, int viewMax, int docMax) { 2691// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2692 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2693 // pin the short document to the top/left of the screen 2694 x = 0; 2695// Log.d(LOGTAG, "--- center " + x); 2696 } else if (x < 0) { 2697 x = 0; 2698// Log.d(LOGTAG, "--- zero"); 2699 } else if (x + viewMax > docMax) { 2700 x = docMax - viewMax; 2701// Log.d(LOGTAG, "--- pin " + x); 2702 } 2703 return x; 2704 } 2705 2706 // Expects x in view coordinates 2707 int pinLocX(int x) { 2708 if (mInOverScrollMode) return x; 2709 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2710 } 2711 2712 // Expects y in view coordinates 2713 int pinLocY(int y) { 2714 if (mInOverScrollMode) return y; 2715 return pinLoc(y, getViewHeightWithTitle(), 2716 computeRealVerticalScrollRange() + getTitleHeight()); 2717 } 2718 2719 /** 2720 * A title bar which is embedded in this WebView, and scrolls along with it 2721 * vertically, but not horizontally. 2722 */ 2723 private View mTitleBar; 2724 2725 /** 2726 * the title bar rendering gravity 2727 */ 2728 private int mTitleGravity; 2729 2730 /** 2731 * Add or remove a title bar to be embedded into the WebView, and scroll 2732 * along with it vertically, while remaining in view horizontally. Pass 2733 * null to remove the title bar from the WebView, and return to drawing 2734 * the WebView normally without translating to account for the title bar. 2735 * @hide 2736 */ 2737 public void setEmbeddedTitleBar(View v) { 2738 if (mTitleBar == v) return; 2739 if (mTitleBar != null) { 2740 removeView(mTitleBar); 2741 } 2742 if (null != v) { 2743 addView(v, new AbsoluteLayout.LayoutParams( 2744 ViewGroup.LayoutParams.MATCH_PARENT, 2745 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2746 } 2747 mTitleBar = v; 2748 } 2749 2750 /** 2751 * Set where to render the embedded title bar 2752 * NO_GRAVITY at the top of the page 2753 * TOP at the top of the screen 2754 * @hide 2755 */ 2756 public void setTitleBarGravity(int gravity) { 2757 mTitleGravity = gravity; 2758 // force refresh 2759 invalidate(); 2760 } 2761 2762 /** 2763 * Given a distance in view space, convert it to content space. Note: this 2764 * does not reflect translation, just scaling, so this should not be called 2765 * with coordinates, but should be called for dimensions like width or 2766 * height. 2767 */ 2768 private int viewToContentDimension(int d) { 2769 return Math.round(d * mZoomManager.getInvScale()); 2770 } 2771 2772 /** 2773 * Given an x coordinate in view space, convert it to content space. Also 2774 * may be used for absolute heights (such as for the WebTextView's 2775 * textSize, which is unaffected by the height of the title bar). 2776 */ 2777 /*package*/ int viewToContentX(int x) { 2778 return viewToContentDimension(x); 2779 } 2780 2781 /** 2782 * Given a y coordinate in view space, convert it to content space. 2783 * Takes into account the height of the title bar if there is one 2784 * embedded into the WebView. 2785 */ 2786 /*package*/ int viewToContentY(int y) { 2787 return viewToContentDimension(y - getTitleHeight()); 2788 } 2789 2790 /** 2791 * Given a x coordinate in view space, convert it to content space. 2792 * Returns the result as a float. 2793 */ 2794 private float viewToContentXf(int x) { 2795 return x * mZoomManager.getInvScale(); 2796 } 2797 2798 /** 2799 * Given a y coordinate in view space, convert it to content space. 2800 * Takes into account the height of the title bar if there is one 2801 * embedded into the WebView. Returns the result as a float. 2802 */ 2803 private float viewToContentYf(int y) { 2804 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2805 } 2806 2807 /** 2808 * Given a distance in content space, convert it to view space. Note: this 2809 * does not reflect translation, just scaling, so this should not be called 2810 * with coordinates, but should be called for dimensions like width or 2811 * height. 2812 */ 2813 /*package*/ int contentToViewDimension(int d) { 2814 return Math.round(d * mZoomManager.getScale()); 2815 } 2816 2817 /** 2818 * Given an x coordinate in content space, convert it to view 2819 * space. 2820 */ 2821 /*package*/ int contentToViewX(int x) { 2822 return contentToViewDimension(x); 2823 } 2824 2825 /** 2826 * Given a y coordinate in content space, convert it to view 2827 * space. Takes into account the height of the title bar. 2828 */ 2829 /*package*/ int contentToViewY(int y) { 2830 return contentToViewDimension(y) + getTitleHeight(); 2831 } 2832 2833 private Rect contentToViewRect(Rect x) { 2834 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2835 contentToViewX(x.right), contentToViewY(x.bottom)); 2836 } 2837 2838 /* To invalidate a rectangle in content coordinates, we need to transform 2839 the rect into view coordinates, so we can then call invalidate(...). 2840 2841 Normally, we would just call contentToView[XY](...), which eventually 2842 calls Math.round(coordinate * mActualScale). However, for invalidates, 2843 we need to account for the slop that occurs with antialiasing. To 2844 address that, we are a little more liberal in the size of the rect that 2845 we invalidate. 2846 2847 This liberal calculation calls floor() for the top/left, and ceil() for 2848 the bottom/right coordinates. This catches the possible extra pixels of 2849 antialiasing that we might have missed with just round(). 2850 */ 2851 2852 // Called by JNI to invalidate the View, given rectangle coordinates in 2853 // content space 2854 private void viewInvalidate(int l, int t, int r, int b) { 2855 final float scale = mZoomManager.getScale(); 2856 final int dy = getTitleHeight(); 2857 invalidate((int)Math.floor(l * scale), 2858 (int)Math.floor(t * scale) + dy, 2859 (int)Math.ceil(r * scale), 2860 (int)Math.ceil(b * scale) + dy); 2861 } 2862 2863 // Called by JNI to invalidate the View after a delay, given rectangle 2864 // coordinates in content space 2865 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2866 final float scale = mZoomManager.getScale(); 2867 final int dy = getTitleHeight(); 2868 postInvalidateDelayed(delay, 2869 (int)Math.floor(l * scale), 2870 (int)Math.floor(t * scale) + dy, 2871 (int)Math.ceil(r * scale), 2872 (int)Math.ceil(b * scale) + dy); 2873 } 2874 2875 private void invalidateContentRect(Rect r) { 2876 viewInvalidate(r.left, r.top, r.right, r.bottom); 2877 } 2878 2879 // stop the scroll animation, and don't let a subsequent fling add 2880 // to the existing velocity 2881 private void abortAnimation() { 2882 mScroller.abortAnimation(); 2883 mLastVelocity = 0; 2884 } 2885 2886 /* call from webcoreview.draw(), so we're still executing in the UI thread 2887 */ 2888 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2889 2890 // premature data from webkit, ignore 2891 if ((w | h) == 0) { 2892 return; 2893 } 2894 2895 // don't abort a scroll animation if we didn't change anything 2896 if (mContentWidth != w || mContentHeight != h) { 2897 // record new dimensions 2898 mContentWidth = w; 2899 mContentHeight = h; 2900 // If history Picture is drawn, don't update scroll. They will be 2901 // updated when we get out of that mode. 2902 if (!mDrawHistory) { 2903 // repin our scroll, taking into account the new content size 2904 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2905 if (!mScroller.isFinished()) { 2906 // We are in the middle of a scroll. Repin the final scroll 2907 // position. 2908 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2909 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2910 } 2911 } 2912 } 2913 contentSizeChanged(updateLayout); 2914 } 2915 2916 // Used to avoid sending many visible rect messages. 2917 private Rect mLastVisibleRectSent = new Rect(); 2918 private Rect mLastGlobalRect = new Rect(); 2919 private Rect mVisibleRect = new Rect(); 2920 private Rect mGlobalVisibleRect = new Rect(); 2921 private Point mScrollOffset = new Point(); 2922 2923 Rect sendOurVisibleRect() { 2924 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2925 calcOurContentVisibleRect(mVisibleRect); 2926 // Rect.equals() checks for null input. 2927 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 2928 if (!mBlockWebkitViewMessages) { 2929 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 2930 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2931 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2932 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 2933 } 2934 mLastVisibleRectSent.set(mVisibleRect); 2935 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2936 } 2937 if (getGlobalVisibleRect(mGlobalVisibleRect) 2938 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 2939 if (DebugFlags.WEB_VIEW) { 2940 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 2941 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 2942 + mGlobalVisibleRect.bottom); 2943 } 2944 // TODO: the global offset is only used by windowRect() 2945 // in ChromeClientAndroid ; other clients such as touch 2946 // and mouse events could return view + screen relative points. 2947 if (!mBlockWebkitViewMessages) { 2948 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 2949 } 2950 mLastGlobalRect.set(mGlobalVisibleRect); 2951 } 2952 return mVisibleRect; 2953 } 2954 2955 private Point mGlobalVisibleOffset = new Point(); 2956 // Sets r to be the visible rectangle of our webview in view coordinates 2957 private void calcOurVisibleRect(Rect r) { 2958 getGlobalVisibleRect(r, mGlobalVisibleOffset); 2959 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 2960 } 2961 2962 // Sets r to be our visible rectangle in content coordinates 2963 private void calcOurContentVisibleRect(Rect r) { 2964 calcOurVisibleRect(r); 2965 r.left = viewToContentX(r.left); 2966 // viewToContentY will remove the total height of the title bar. Add 2967 // the visible height back in to account for the fact that if the title 2968 // bar is partially visible, the part of the visible rect which is 2969 // displaying our content is displaced by that amount. 2970 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2971 r.right = viewToContentX(r.right); 2972 r.bottom = viewToContentY(r.bottom); 2973 } 2974 2975 private Rect mContentVisibleRect = new Rect(); 2976 // Sets r to be our visible rectangle in content coordinates. We use this 2977 // method on the native side to compute the position of the fixed layers. 2978 // Uses floating coordinates (necessary to correctly place elements when 2979 // the scale factor is not 1) 2980 private void calcOurContentVisibleRectF(RectF r) { 2981 calcOurVisibleRect(mContentVisibleRect); 2982 r.left = viewToContentXf(mContentVisibleRect.left); 2983 // viewToContentY will remove the total height of the title bar. Add 2984 // the visible height back in to account for the fact that if the title 2985 // bar is partially visible, the part of the visible rect which is 2986 // displaying our content is displaced by that amount. 2987 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 2988 r.right = viewToContentXf(mContentVisibleRect.right); 2989 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 2990 } 2991 2992 static class ViewSizeData { 2993 int mWidth; 2994 int mHeight; 2995 float mHeightWidthRatio; 2996 int mActualViewHeight; 2997 int mTextWrapWidth; 2998 int mAnchorX; 2999 int mAnchorY; 3000 float mScale; 3001 boolean mIgnoreHeight; 3002 } 3003 3004 /** 3005 * Compute unzoomed width and height, and if they differ from the last 3006 * values we sent, send them to webkit (to be used as new viewport) 3007 * 3008 * @param force ensures that the message is sent to webkit even if the width 3009 * or height has not changed since the last message 3010 * 3011 * @return true if new values were sent 3012 */ 3013 boolean sendViewSizeZoom(boolean force) { 3014 if (mBlockWebkitViewMessages) return false; 3015 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3016 3017 int viewWidth = getViewWidth(); 3018 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3019 // This height could be fixed and be different from actual visible height. 3020 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3021 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3022 // Make the ratio more accurate than (newHeight / newWidth), since the 3023 // latter both are calculated and rounded. 3024 float heightWidthRatio = (float) viewHeight / viewWidth; 3025 /* 3026 * Because the native side may have already done a layout before the 3027 * View system was able to measure us, we have to send a height of 0 to 3028 * remove excess whitespace when we grow our width. This will trigger a 3029 * layout and a change in content size. This content size change will 3030 * mean that contentSizeChanged will either call this method directly or 3031 * indirectly from onSizeChanged. 3032 */ 3033 if (newWidth > mLastWidthSent && mWrapContent) { 3034 newHeight = 0; 3035 heightWidthRatio = 0; 3036 } 3037 // Actual visible content height. 3038 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3039 // Avoid sending another message if the dimensions have not changed. 3040 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3041 actualViewHeight != mLastActualHeightSent) { 3042 ViewSizeData data = new ViewSizeData(); 3043 data.mWidth = newWidth; 3044 data.mHeight = newHeight; 3045 data.mHeightWidthRatio = heightWidthRatio; 3046 data.mActualViewHeight = actualViewHeight; 3047 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3048 data.mScale = mZoomManager.getScale(); 3049 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3050 && !mHeightCanMeasure; 3051 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3052 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3053 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3054 mLastWidthSent = newWidth; 3055 mLastHeightSent = newHeight; 3056 mLastActualHeightSent = actualViewHeight; 3057 mZoomManager.clearDocumentAnchor(); 3058 return true; 3059 } 3060 return false; 3061 } 3062 3063 /** 3064 * Update the double-tap zoom. 3065 */ 3066 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3067 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3068 } 3069 3070 private int computeRealHorizontalScrollRange() { 3071 if (mDrawHistory) { 3072 return mHistoryWidth; 3073 } else { 3074 // to avoid rounding error caused unnecessary scrollbar, use floor 3075 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3076 } 3077 } 3078 3079 @Override 3080 protected int computeHorizontalScrollRange() { 3081 int range = computeRealHorizontalScrollRange(); 3082 3083 // Adjust reported range if overscrolled to compress the scroll bars 3084 final int scrollX = mScrollX; 3085 final int overscrollRight = computeMaxScrollX(); 3086 if (scrollX < 0) { 3087 range -= scrollX; 3088 } else if (scrollX > overscrollRight) { 3089 range += scrollX - overscrollRight; 3090 } 3091 3092 return range; 3093 } 3094 3095 @Override 3096 protected int computeHorizontalScrollOffset() { 3097 return Math.max(mScrollX, 0); 3098 } 3099 3100 private int computeRealVerticalScrollRange() { 3101 if (mDrawHistory) { 3102 return mHistoryHeight; 3103 } else { 3104 // to avoid rounding error caused unnecessary scrollbar, use floor 3105 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3106 } 3107 } 3108 3109 @Override 3110 protected int computeVerticalScrollRange() { 3111 int range = computeRealVerticalScrollRange(); 3112 3113 // Adjust reported range if overscrolled to compress the scroll bars 3114 final int scrollY = mScrollY; 3115 final int overscrollBottom = computeMaxScrollY(); 3116 if (scrollY < 0) { 3117 range -= scrollY; 3118 } else if (scrollY > overscrollBottom) { 3119 range += scrollY - overscrollBottom; 3120 } 3121 3122 return range; 3123 } 3124 3125 @Override 3126 protected int computeVerticalScrollOffset() { 3127 return Math.max(mScrollY - getTitleHeight(), 0); 3128 } 3129 3130 @Override 3131 protected int computeVerticalScrollExtent() { 3132 return getViewHeight(); 3133 } 3134 3135 /** @hide */ 3136 @Override 3137 protected void onDrawVerticalScrollBar(Canvas canvas, 3138 Drawable scrollBar, 3139 int l, int t, int r, int b) { 3140 if (mScrollY < 0) { 3141 t -= mScrollY; 3142 } 3143 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3144 scrollBar.draw(canvas); 3145 } 3146 3147 @Override 3148 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3149 boolean clampedY) { 3150 // Special-case layer scrolling so that we do not trigger normal scroll 3151 // updating. 3152 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3153 scrollLayerTo(scrollX, scrollY); 3154 return; 3155 } 3156 mInOverScrollMode = false; 3157 int maxX = computeMaxScrollX(); 3158 int maxY = computeMaxScrollY(); 3159 if (maxX == 0) { 3160 // do not over scroll x if the page just fits the screen 3161 scrollX = pinLocX(scrollX); 3162 } else if (scrollX < 0 || scrollX > maxX) { 3163 mInOverScrollMode = true; 3164 } 3165 if (scrollY < 0 || scrollY > maxY) { 3166 mInOverScrollMode = true; 3167 } 3168 3169 int oldX = mScrollX; 3170 int oldY = mScrollY; 3171 3172 super.scrollTo(scrollX, scrollY); 3173 3174 if (mOverScrollGlow != null) { 3175 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3176 } 3177 } 3178 3179 /** 3180 * Get the url for the current page. This is not always the same as the url 3181 * passed to WebViewClient.onPageStarted because although the load for 3182 * that url has begun, the current page may not have changed. 3183 * @return The url for the current page. 3184 */ 3185 public String getUrl() { 3186 checkThread(); 3187 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3188 return h != null ? h.getUrl() : null; 3189 } 3190 3191 /** 3192 * Get the original url for the current page. This is not always the same 3193 * as the url passed to WebViewClient.onPageStarted because although the 3194 * load for that url has begun, the current page may not have changed. 3195 * Also, there may have been redirects resulting in a different url to that 3196 * originally requested. 3197 * @return The url that was originally requested for the current page. 3198 */ 3199 public String getOriginalUrl() { 3200 checkThread(); 3201 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3202 return h != null ? h.getOriginalUrl() : null; 3203 } 3204 3205 /** 3206 * Get the title for the current page. This is the title of the current page 3207 * until WebViewClient.onReceivedTitle is called. 3208 * @return The title for the current page. 3209 */ 3210 public String getTitle() { 3211 checkThread(); 3212 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3213 return h != null ? h.getTitle() : null; 3214 } 3215 3216 /** 3217 * Get the favicon for the current page. This is the favicon of the current 3218 * page until WebViewClient.onReceivedIcon is called. 3219 * @return The favicon for the current page. 3220 */ 3221 public Bitmap getFavicon() { 3222 checkThread(); 3223 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3224 return h != null ? h.getFavicon() : null; 3225 } 3226 3227 /** 3228 * Get the touch icon url for the apple-touch-icon <link> element, or 3229 * a URL on this site's server pointing to the standard location of a 3230 * touch icon. 3231 * @hide 3232 */ 3233 public String getTouchIconUrl() { 3234 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3235 return h != null ? h.getTouchIconUrl() : null; 3236 } 3237 3238 /** 3239 * Get the progress for the current page. 3240 * @return The progress for the current page between 0 and 100. 3241 */ 3242 public int getProgress() { 3243 checkThread(); 3244 return mCallbackProxy.getProgress(); 3245 } 3246 3247 /** 3248 * @return the height of the HTML content. 3249 */ 3250 public int getContentHeight() { 3251 checkThread(); 3252 return mContentHeight; 3253 } 3254 3255 /** 3256 * @return the width of the HTML content. 3257 * @hide 3258 */ 3259 public int getContentWidth() { 3260 return mContentWidth; 3261 } 3262 3263 /** 3264 * @hide 3265 */ 3266 public int getPageBackgroundColor() { 3267 return nativeGetBackgroundColor(); 3268 } 3269 3270 /** 3271 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3272 * is a global requests, not restricted to just this webview. This can be 3273 * useful if the application has been paused. 3274 */ 3275 public void pauseTimers() { 3276 checkThread(); 3277 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3278 } 3279 3280 /** 3281 * Resume all layout, parsing, and JavaScript timers for all webviews. 3282 * This will resume dispatching all timers. 3283 */ 3284 public void resumeTimers() { 3285 checkThread(); 3286 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3287 } 3288 3289 /** 3290 * Call this to pause any extra processing associated with this WebView and 3291 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3292 * is taken offscreen, this could be called to reduce unnecessary CPU or 3293 * network traffic. When the WebView is again "active", call onResume(). 3294 * 3295 * Note that this differs from pauseTimers(), which affects all WebViews. 3296 */ 3297 public void onPause() { 3298 checkThread(); 3299 if (!mIsPaused) { 3300 mIsPaused = true; 3301 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3302 // We want to pause the current playing video when switching out 3303 // from the current WebView/tab. 3304 if (mHTML5VideoViewProxy != null) { 3305 mHTML5VideoViewProxy.pauseAndDispatch(); 3306 } 3307 if (mNativeClass != 0) { 3308 nativeSetPauseDrawing(mNativeClass, true); 3309 } 3310 3311 cancelSelectDialog(); 3312 } 3313 } 3314 3315 @Override 3316 protected void onWindowVisibilityChanged(int visibility) { 3317 super.onWindowVisibilityChanged(visibility); 3318 updateDrawingState(); 3319 } 3320 3321 void updateDrawingState() { 3322 if (mNativeClass == 0 || mIsPaused) return; 3323 if (getWindowVisibility() != VISIBLE) { 3324 nativeSetPauseDrawing(mNativeClass, true); 3325 } else if (getVisibility() != VISIBLE) { 3326 nativeSetPauseDrawing(mNativeClass, true); 3327 } else { 3328 nativeSetPauseDrawing(mNativeClass, false); 3329 } 3330 } 3331 3332 /** 3333 * Call this to resume a WebView after a previous call to onPause(). 3334 */ 3335 public void onResume() { 3336 checkThread(); 3337 if (mIsPaused) { 3338 mIsPaused = false; 3339 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3340 if (mNativeClass != 0) { 3341 nativeSetPauseDrawing(mNativeClass, false); 3342 } 3343 } 3344 } 3345 3346 /** 3347 * Returns true if the view is paused, meaning onPause() was called. Calling 3348 * onResume() sets the paused state back to false. 3349 * @hide 3350 */ 3351 public boolean isPaused() { 3352 return mIsPaused; 3353 } 3354 3355 /** 3356 * Call this to inform the view that memory is low so that it can 3357 * free any available memory. 3358 */ 3359 public void freeMemory() { 3360 checkThread(); 3361 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3362 } 3363 3364 /** 3365 * Clear the resource cache. Note that the cache is per-application, so 3366 * this will clear the cache for all WebViews used. 3367 * 3368 * @param includeDiskFiles If false, only the RAM cache is cleared. 3369 */ 3370 public void clearCache(boolean includeDiskFiles) { 3371 checkThread(); 3372 // Note: this really needs to be a static method as it clears cache for all 3373 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3374 // we can't make this static. 3375 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3376 includeDiskFiles ? 1 : 0, 0); 3377 } 3378 3379 /** 3380 * Make sure that clearing the form data removes the adapter from the 3381 * currently focused textfield if there is one. 3382 */ 3383 public void clearFormData() { 3384 checkThread(); 3385 if (inEditingMode()) { 3386 mWebTextView.setAdapterCustom(null); 3387 } 3388 } 3389 3390 /** 3391 * Tell the WebView to clear its internal back/forward list. 3392 */ 3393 public void clearHistory() { 3394 checkThread(); 3395 mCallbackProxy.getBackForwardList().setClearPending(); 3396 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3397 } 3398 3399 /** 3400 * Clear the SSL preferences table stored in response to proceeding with SSL 3401 * certificate errors. 3402 */ 3403 public void clearSslPreferences() { 3404 checkThread(); 3405 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3406 } 3407 3408 /** 3409 * Return the WebBackForwardList for this WebView. This contains the 3410 * back/forward list for use in querying each item in the history stack. 3411 * This is a copy of the private WebBackForwardList so it contains only a 3412 * snapshot of the current state. Multiple calls to this method may return 3413 * different objects. The object returned from this method will not be 3414 * updated to reflect any new state. 3415 */ 3416 public WebBackForwardList copyBackForwardList() { 3417 checkThread(); 3418 return mCallbackProxy.getBackForwardList().clone(); 3419 } 3420 3421 /* 3422 * Highlight and scroll to the next occurance of String in findAll. 3423 * Wraps the page infinitely, and scrolls. Must be called after 3424 * calling findAll. 3425 * 3426 * @param forward Direction to search. 3427 */ 3428 public void findNext(boolean forward) { 3429 checkThread(); 3430 if (0 == mNativeClass) return; // client isn't initialized 3431 nativeFindNext(forward); 3432 } 3433 3434 /* 3435 * Find all instances of find on the page and highlight them. 3436 * @param find String to find. 3437 * @return int The number of occurances of the String "find" 3438 * that were found. 3439 */ 3440 public int findAll(String find) { 3441 checkThread(); 3442 if (0 == mNativeClass) return 0; // client isn't initialized 3443 int result = find != null ? nativeFindAll(find.toLowerCase(), 3444 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3445 invalidate(); 3446 mLastFind = find; 3447 return result; 3448 } 3449 3450 /** 3451 * Start an ActionMode for finding text in this WebView. Only works if this 3452 * WebView is attached to the view system. 3453 * @param text If non-null, will be the initial text to search for. 3454 * Otherwise, the last String searched for in this WebView will 3455 * be used to start. 3456 * @param showIme If true, show the IME, assuming the user will begin typing. 3457 * If false and text is non-null, perform a find all. 3458 * @return boolean True if the find dialog is shown, false otherwise. 3459 */ 3460 public boolean showFindDialog(String text, boolean showIme) { 3461 checkThread(); 3462 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3463 if (getParent() == null || startActionMode(callback) == null) { 3464 // Could not start the action mode, so end Find on page 3465 return false; 3466 } 3467 mCachedOverlappingActionModeHeight = -1; 3468 mFindCallback = callback; 3469 setFindIsUp(true); 3470 mFindCallback.setWebView(this); 3471 if (showIme) { 3472 mFindCallback.showSoftInput(); 3473 } else if (text != null) { 3474 mFindCallback.setText(text); 3475 mFindCallback.findAll(); 3476 return true; 3477 } 3478 if (text == null) { 3479 text = mLastFind; 3480 } 3481 if (text != null) { 3482 mFindCallback.setText(text); 3483 } 3484 return true; 3485 } 3486 3487 /** 3488 * Keep track of the find callback so that we can remove its titlebar if 3489 * necessary. 3490 */ 3491 private FindActionModeCallback mFindCallback; 3492 3493 /** 3494 * Toggle whether the find dialog is showing, for both native and Java. 3495 */ 3496 private void setFindIsUp(boolean isUp) { 3497 mFindIsUp = isUp; 3498 if (0 == mNativeClass) return; // client isn't initialized 3499 nativeSetFindIsUp(isUp); 3500 } 3501 3502 /** 3503 * Return the index of the currently highlighted match. 3504 */ 3505 int findIndex() { 3506 if (0 == mNativeClass) return -1; 3507 return nativeFindIndex(); 3508 } 3509 3510 // Used to know whether the find dialog is open. Affects whether 3511 // or not we draw the highlights for matches. 3512 private boolean mFindIsUp; 3513 3514 // Keep track of the last string sent, so we can search again when find is 3515 // reopened. 3516 private String mLastFind; 3517 3518 /** 3519 * Return the first substring consisting of the address of a physical 3520 * location. Currently, only addresses in the United States are detected, 3521 * and consist of: 3522 * - a house number 3523 * - a street name 3524 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3525 * - a city name 3526 * - a state or territory, either spelled out or two-letter abbr. 3527 * - an optional 5 digit or 9 digit zip code. 3528 * 3529 * All names must be correctly capitalized, and the zip code, if present, 3530 * must be valid for the state. The street type must be a standard USPS 3531 * spelling or abbreviation. The state or territory must also be spelled 3532 * or abbreviated using USPS standards. The house number may not exceed 3533 * five digits. 3534 * @param addr The string to search for addresses. 3535 * 3536 * @return the address, or if no address is found, return null. 3537 */ 3538 public static String findAddress(String addr) { 3539 checkThread(); 3540 return findAddress(addr, false); 3541 } 3542 3543 /** 3544 * @hide 3545 * Return the first substring consisting of the address of a physical 3546 * location. Currently, only addresses in the United States are detected, 3547 * and consist of: 3548 * - a house number 3549 * - a street name 3550 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3551 * - a city name 3552 * - a state or territory, either spelled out or two-letter abbr. 3553 * - an optional 5 digit or 9 digit zip code. 3554 * 3555 * Names are optionally capitalized, and the zip code, if present, 3556 * must be valid for the state. The street type must be a standard USPS 3557 * spelling or abbreviation. The state or territory must also be spelled 3558 * or abbreviated using USPS standards. The house number may not exceed 3559 * five digits. 3560 * @param addr The string to search for addresses. 3561 * @param caseInsensitive addr Set to true to make search ignore case. 3562 * 3563 * @return the address, or if no address is found, return null. 3564 */ 3565 public static String findAddress(String addr, boolean caseInsensitive) { 3566 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3567 } 3568 3569 /* 3570 * Clear the highlighting surrounding text matches created by findAll. 3571 */ 3572 public void clearMatches() { 3573 checkThread(); 3574 if (mNativeClass == 0) 3575 return; 3576 nativeSetFindIsEmpty(); 3577 invalidate(); 3578 } 3579 3580 /** 3581 * Called when the find ActionMode ends. 3582 */ 3583 void notifyFindDialogDismissed() { 3584 mFindCallback = null; 3585 mCachedOverlappingActionModeHeight = -1; 3586 if (mWebViewCore == null) { 3587 return; 3588 } 3589 clearMatches(); 3590 setFindIsUp(false); 3591 // Now that the dialog has been removed, ensure that we scroll to a 3592 // location that is not beyond the end of the page. 3593 pinScrollTo(mScrollX, mScrollY, false, 0); 3594 invalidate(); 3595 } 3596 3597 /** 3598 * Query the document to see if it contains any image references. The 3599 * message object will be dispatched with arg1 being set to 1 if images 3600 * were found and 0 if the document does not reference any images. 3601 * @param response The message that will be dispatched with the result. 3602 */ 3603 public void documentHasImages(Message response) { 3604 checkThread(); 3605 if (response == null) { 3606 return; 3607 } 3608 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3609 } 3610 3611 /** 3612 * Request the scroller to abort any ongoing animation 3613 * 3614 * @hide 3615 */ 3616 public void stopScroll() { 3617 mScroller.forceFinished(true); 3618 mLastVelocity = 0; 3619 } 3620 3621 @Override 3622 public void computeScroll() { 3623 if (mScroller.computeScrollOffset()) { 3624 int oldX = mScrollX; 3625 int oldY = mScrollY; 3626 int x = mScroller.getCurrX(); 3627 int y = mScroller.getCurrY(); 3628 invalidate(); // So we draw again 3629 3630 if (!mScroller.isFinished()) { 3631 int rangeX = computeMaxScrollX(); 3632 int rangeY = computeMaxScrollY(); 3633 int overflingDistance = mOverflingDistance; 3634 3635 // Use the layer's scroll data if needed. 3636 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3637 oldX = mScrollingLayerRect.left; 3638 oldY = mScrollingLayerRect.top; 3639 rangeX = mScrollingLayerRect.right; 3640 rangeY = mScrollingLayerRect.bottom; 3641 // No overscrolling for layers. 3642 overflingDistance = 0; 3643 } 3644 3645 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3646 rangeX, rangeY, 3647 overflingDistance, overflingDistance, false); 3648 3649 if (mOverScrollGlow != null) { 3650 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3651 } 3652 } else { 3653 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3654 mScrollX = x; 3655 mScrollY = y; 3656 } else { 3657 // Update the layer position instead of WebView. 3658 scrollLayerTo(x, y); 3659 } 3660 abortAnimation(); 3661 nativeSetIsScrolling(false); 3662 if (!mBlockWebkitViewMessages) { 3663 WebViewCore.resumePriority(); 3664 if (!mSelectingText) { 3665 WebViewCore.resumeUpdatePicture(mWebViewCore); 3666 } 3667 } 3668 if (oldX != mScrollX || oldY != mScrollY) { 3669 sendOurVisibleRect(); 3670 } 3671 } 3672 } else { 3673 super.computeScroll(); 3674 } 3675 } 3676 3677 private void scrollLayerTo(int x, int y) { 3678 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3679 return; 3680 } 3681 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 3682 mScrollingLayerRect.left = x; 3683 mScrollingLayerRect.top = y; 3684 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 3685 invalidate(); 3686 } 3687 3688 private static int computeDuration(int dx, int dy) { 3689 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3690 int duration = distance * 1000 / STD_SPEED; 3691 return Math.min(duration, MAX_DURATION); 3692 } 3693 3694 // helper to pin the scrollBy parameters (already in view coordinates) 3695 // returns true if the scroll was changed 3696 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3697 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3698 } 3699 // helper to pin the scrollTo parameters (already in view coordinates) 3700 // returns true if the scroll was changed 3701 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3702 x = pinLocX(x); 3703 y = pinLocY(y); 3704 int dx = x - mScrollX; 3705 int dy = y - mScrollY; 3706 3707 if ((dx | dy) == 0) { 3708 return false; 3709 } 3710 abortAnimation(); 3711 if (animate) { 3712 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3713 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3714 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3715 awakenScrollBars(mScroller.getDuration()); 3716 invalidate(); 3717 } else { 3718 scrollTo(x, y); 3719 } 3720 return true; 3721 } 3722 3723 // Scale from content to view coordinates, and pin. 3724 // Also called by jni webview.cpp 3725 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3726 if (mDrawHistory) { 3727 // disallow WebView to change the scroll position as History Picture 3728 // is used in the view system. 3729 // TODO: as we switchOutDrawHistory when trackball or navigation 3730 // keys are hit, this should be safe. Right? 3731 return false; 3732 } 3733 cx = contentToViewDimension(cx); 3734 cy = contentToViewDimension(cy); 3735 if (mHeightCanMeasure) { 3736 // move our visible rect according to scroll request 3737 if (cy != 0) { 3738 Rect tempRect = new Rect(); 3739 calcOurVisibleRect(tempRect); 3740 tempRect.offset(cx, cy); 3741 requestRectangleOnScreen(tempRect); 3742 } 3743 // FIXME: We scroll horizontally no matter what because currently 3744 // ScrollView and ListView will not scroll horizontally. 3745 // FIXME: Why do we only scroll horizontally if there is no 3746 // vertical scroll? 3747// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3748 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3749 } else { 3750 return pinScrollBy(cx, cy, animate, 0); 3751 } 3752 } 3753 3754 /** 3755 * Called by CallbackProxy when the page starts loading. 3756 * @param url The URL of the page which has started loading. 3757 */ 3758 /* package */ void onPageStarted(String url) { 3759 // every time we start a new page, we want to reset the 3760 // WebView certificate: if the new site is secure, we 3761 // will reload it and get a new certificate set; 3762 // if the new site is not secure, the certificate must be 3763 // null, and that will be the case 3764 setCertificate(null); 3765 3766 // reset the flag since we set to true in if need after 3767 // loading is see onPageFinished(Url) 3768 mAccessibilityScriptInjected = false; 3769 } 3770 3771 /** 3772 * Called by CallbackProxy when the page finishes loading. 3773 * @param url The URL of the page which has finished loading. 3774 */ 3775 /* package */ void onPageFinished(String url) { 3776 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3777 // If the user is now on a different page, or has scrolled the page 3778 // past the point where the title bar is offscreen, ignore the 3779 // scroll request. 3780 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3781 && mScrollX == 0 && mScrollY == 0) { 3782 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3783 SLIDE_TITLE_DURATION); 3784 } 3785 mPageThatNeedsToSlideTitleBarOffScreen = null; 3786 } 3787 mZoomManager.onPageFinished(url); 3788 injectAccessibilityForUrl(url); 3789 } 3790 3791 /** 3792 * This method injects accessibility in the loaded document if accessibility 3793 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3794 * If no URL specific script is found or JavaScript is disabled we fallback to 3795 * the default {@link AccessibilityInjector} implementation. 3796 * </p> 3797 * If the URL has the "axs" paramter set to 1 it has already done the 3798 * script injection so we do nothing. If the parameter is set to 0 3799 * the URL opts out accessibility script injection so we fall back to 3800 * the default {@link AccessibilityInjector}. 3801 * </p> 3802 * Note: If the user has not opted-in the accessibility script injection no scripts 3803 * are injected rather the default {@link AccessibilityInjector} implementation 3804 * is used. 3805 * 3806 * @param url The URL loaded by this {@link WebView}. 3807 */ 3808 private void injectAccessibilityForUrl(String url) { 3809 if (mWebViewCore == null) { 3810 return; 3811 } 3812 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3813 3814 if (!accessibilityManager.isEnabled()) { 3815 // it is possible that accessibility was turned off between reloads 3816 ensureAccessibilityScriptInjectorInstance(false); 3817 return; 3818 } 3819 3820 if (!getSettings().getJavaScriptEnabled()) { 3821 // no JS so we fallback to the basic buil-in support 3822 ensureAccessibilityScriptInjectorInstance(true); 3823 return; 3824 } 3825 3826 // check the URL "axs" parameter to choose appropriate action 3827 int axsParameterValue = getAxsUrlParameterValue(url); 3828 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3829 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3830 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3831 if (onDeviceScriptInjectionEnabled) { 3832 ensureAccessibilityScriptInjectorInstance(false); 3833 // neither script injected nor script injection opted out => we inject 3834 loadUrl(getScreenReaderInjectingJs()); 3835 // TODO: Set this flag after successfull script injection. Maybe upon injection 3836 // the chooser should update the meta tag and we check it to declare success 3837 mAccessibilityScriptInjected = true; 3838 } else { 3839 // injection disabled so we fallback to the basic built-in support 3840 ensureAccessibilityScriptInjectorInstance(true); 3841 } 3842 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3843 // injection opted out so we fallback to the basic buil-in support 3844 ensureAccessibilityScriptInjectorInstance(true); 3845 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3846 ensureAccessibilityScriptInjectorInstance(false); 3847 // the URL provides accessibility but we still need to add our generic script 3848 loadUrl(getScreenReaderInjectingJs()); 3849 } else { 3850 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3851 } 3852 } 3853 3854 /** 3855 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3856 * 3857 * @param present True to ensure an insance, false to ensure no instance. 3858 */ 3859 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3860 if (present) { 3861 if (mAccessibilityInjector == null) { 3862 mAccessibilityInjector = new AccessibilityInjector(this); 3863 } 3864 } else { 3865 mAccessibilityInjector = null; 3866 } 3867 } 3868 3869 /** 3870 * Gets JavaScript that injects a screen-reader. 3871 * 3872 * @return The JavaScript snippet. 3873 */ 3874 private String getScreenReaderInjectingJs() { 3875 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 3876 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 3877 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 3878 } 3879 3880 /** 3881 * Gets the "axs" URL parameter value. 3882 * 3883 * @param url A url to fetch the paramter from. 3884 * @return The parameter value if such, -1 otherwise. 3885 */ 3886 private int getAxsUrlParameterValue(String url) { 3887 if (mMatchAxsUrlParameterPattern == null) { 3888 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3889 } 3890 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3891 if (matcher.find()) { 3892 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3893 return Integer.parseInt(keyValuePair.split("=")[1]); 3894 } 3895 return -1; 3896 } 3897 3898 /** 3899 * The URL of a page that sent a message to scroll the title bar off screen. 3900 * 3901 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3902 * title bar off the screen. Sometimes, the scroll position is set before 3903 * the page finishes loading. Rather than scrolling while the page is still 3904 * loading, keep track of the URL and new scroll position so we can perform 3905 * the scroll once the page finishes loading. 3906 */ 3907 private String mPageThatNeedsToSlideTitleBarOffScreen; 3908 3909 /** 3910 * The destination Y scroll position to be used when the page finishes 3911 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3912 */ 3913 private int mYDistanceToSlideTitleOffScreen; 3914 3915 // scale from content to view coordinates, and pin 3916 // return true if pin caused the final x/y different than the request cx/cy, 3917 // and a future scroll may reach the request cx/cy after our size has 3918 // changed 3919 // return false if the view scroll to the exact position as it is requested, 3920 // where negative numbers are taken to mean 0 3921 private boolean setContentScrollTo(int cx, int cy) { 3922 if (mDrawHistory) { 3923 // disallow WebView to change the scroll position as History Picture 3924 // is used in the view system. 3925 // One known case where this is called is that WebCore tries to 3926 // restore the scroll position. As history Picture already uses the 3927 // saved scroll position, it is ok to skip this. 3928 return false; 3929 } 3930 int vx; 3931 int vy; 3932 if ((cx | cy) == 0) { 3933 // If the page is being scrolled to (0,0), do not add in the title 3934 // bar's height, and simply scroll to (0,0). (The only other work 3935 // in contentToView_ is to multiply, so this would not change 0.) 3936 vx = 0; 3937 vy = 0; 3938 } else { 3939 vx = contentToViewX(cx); 3940 vy = contentToViewY(cy); 3941 } 3942// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3943// vx + " " + vy + "]"); 3944 // Some mobile sites attempt to scroll the title bar off the page by 3945 // scrolling to (0,1). If we are at the top left corner of the 3946 // page, assume this is an attempt to scroll off the title bar, and 3947 // animate the title bar off screen slowly enough that the user can see 3948 // it. 3949 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3950 && mTitleBar != null) { 3951 // FIXME: 100 should be defined somewhere as our max progress. 3952 if (getProgress() < 100) { 3953 // Wait to scroll the title bar off screen until the page has 3954 // finished loading. Keep track of the URL and the destination 3955 // Y position 3956 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3957 mYDistanceToSlideTitleOffScreen = vy; 3958 } else { 3959 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3960 } 3961 // Since we are animating, we have not yet reached the desired 3962 // scroll position. Do not return true to request another attempt 3963 return false; 3964 } 3965 pinScrollTo(vx, vy, false, 0); 3966 // If the request was to scroll to a negative coordinate, treat it as if 3967 // it was a request to scroll to 0 3968 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3969 return true; 3970 } else { 3971 return false; 3972 } 3973 } 3974 3975 // scale from content to view coordinates, and pin 3976 private void spawnContentScrollTo(int cx, int cy) { 3977 if (mDrawHistory) { 3978 // disallow WebView to change the scroll position as History Picture 3979 // is used in the view system. 3980 return; 3981 } 3982 int vx = contentToViewX(cx); 3983 int vy = contentToViewY(cy); 3984 pinScrollTo(vx, vy, true, 0); 3985 } 3986 3987 /** 3988 * These are from webkit, and are in content coordinate system (unzoomed) 3989 */ 3990 private void contentSizeChanged(boolean updateLayout) { 3991 // suppress 0,0 since we usually see real dimensions soon after 3992 // this avoids drawing the prev content in a funny place. If we find a 3993 // way to consolidate these notifications, this check may become 3994 // obsolete 3995 if ((mContentWidth | mContentHeight) == 0) { 3996 return; 3997 } 3998 3999 if (mHeightCanMeasure) { 4000 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 4001 || updateLayout) { 4002 requestLayout(); 4003 } 4004 } else if (mWidthCanMeasure) { 4005 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 4006 || updateLayout) { 4007 requestLayout(); 4008 } 4009 } else { 4010 // If we don't request a layout, try to send our view size to the 4011 // native side to ensure that WebCore has the correct dimensions. 4012 sendViewSizeZoom(false); 4013 } 4014 } 4015 4016 /** 4017 * Set the WebViewClient that will receive various notifications and 4018 * requests. This will replace the current handler. 4019 * @param client An implementation of WebViewClient. 4020 */ 4021 public void setWebViewClient(WebViewClient client) { 4022 checkThread(); 4023 mCallbackProxy.setWebViewClient(client); 4024 } 4025 4026 /** 4027 * Gets the WebViewClient 4028 * @return the current WebViewClient instance. 4029 * 4030 * @hide This is an implementation detail. 4031 */ 4032 public WebViewClient getWebViewClient() { 4033 return mCallbackProxy.getWebViewClient(); 4034 } 4035 4036 /** 4037 * Register the interface to be used when content can not be handled by 4038 * the rendering engine, and should be downloaded instead. This will replace 4039 * the current handler. 4040 * @param listener An implementation of DownloadListener. 4041 */ 4042 public void setDownloadListener(DownloadListener listener) { 4043 checkThread(); 4044 mCallbackProxy.setDownloadListener(listener); 4045 } 4046 4047 /** 4048 * Set the chrome handler. This is an implementation of WebChromeClient for 4049 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4050 * This will replace the current handler. 4051 * @param client An implementation of WebChromeClient. 4052 */ 4053 public void setWebChromeClient(WebChromeClient client) { 4054 checkThread(); 4055 mCallbackProxy.setWebChromeClient(client); 4056 } 4057 4058 /** 4059 * Gets the chrome handler. 4060 * @return the current WebChromeClient instance. 4061 * 4062 * @hide This is an implementation detail. 4063 */ 4064 public WebChromeClient getWebChromeClient() { 4065 return mCallbackProxy.getWebChromeClient(); 4066 } 4067 4068 /** 4069 * Set the back/forward list client. This is an implementation of 4070 * WebBackForwardListClient for handling new items and changes in the 4071 * history index. 4072 * @param client An implementation of WebBackForwardListClient. 4073 * {@hide} 4074 */ 4075 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4076 mCallbackProxy.setWebBackForwardListClient(client); 4077 } 4078 4079 /** 4080 * Gets the WebBackForwardListClient. 4081 * {@hide} 4082 */ 4083 public WebBackForwardListClient getWebBackForwardListClient() { 4084 return mCallbackProxy.getWebBackForwardListClient(); 4085 } 4086 4087 /** 4088 * Set the Picture listener. This is an interface used to receive 4089 * notifications of a new Picture. 4090 * @param listener An implementation of WebView.PictureListener. 4091 * @deprecated This method is now obsolete. 4092 */ 4093 @Deprecated 4094 public void setPictureListener(PictureListener listener) { 4095 checkThread(); 4096 mPictureListener = listener; 4097 } 4098 4099 /** 4100 * {@hide} 4101 */ 4102 /* FIXME: Debug only! Remove for SDK! */ 4103 public void externalRepresentation(Message callback) { 4104 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4105 } 4106 4107 /** 4108 * {@hide} 4109 */ 4110 /* FIXME: Debug only! Remove for SDK! */ 4111 public void documentAsText(Message callback) { 4112 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4113 } 4114 4115 /** 4116 * This method injects the supplied Java object into the WebView. The 4117 * object is injected into the JavaScript context of the main frame, using 4118 * the supplied name. This allows the Java object to be accessed from 4119 * JavaScript. Note that that injected objects will not appear in 4120 * JavaScript until the page is next (re)loaded. For example: 4121 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4122 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4123 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4124 * <p><strong>IMPORTANT:</strong> 4125 * <ul> 4126 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4127 * the host application. This is a powerful feature, but also presents a 4128 * security risk. Use of this method in a WebView containing untrusted 4129 * content could allow an attacker to manipulate the host application in 4130 * unintended ways, executing Java code with the permissions of the host 4131 * application. Use extreme care when using this method in a WebView which 4132 * could contain untrusted content. 4133 * <li> JavaScript interacts with Java object on a private, background 4134 * thread of the WebView. Care is therefore required to maintain thread 4135 * safety.</li> 4136 * </ul></p> 4137 * @param object The Java object to inject into the WebView's JavaScript 4138 * context. Null values are ignored. 4139 * @param name The name used to expose the instance in JavaScript. 4140 */ 4141 public void addJavascriptInterface(Object object, String name) { 4142 checkThread(); 4143 if (object == null) { 4144 return; 4145 } 4146 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4147 arg.mObject = object; 4148 arg.mInterfaceName = name; 4149 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4150 } 4151 4152 /** 4153 * Removes a previously added JavaScript interface with the given name. 4154 * @param interfaceName The name of the interface to remove. 4155 */ 4156 public void removeJavascriptInterface(String interfaceName) { 4157 checkThread(); 4158 if (mWebViewCore != null) { 4159 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4160 arg.mInterfaceName = interfaceName; 4161 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4162 } 4163 } 4164 4165 /** 4166 * Return the WebSettings object used to control the settings for this 4167 * WebView. 4168 * @return A WebSettings object that can be used to control this WebView's 4169 * settings. 4170 */ 4171 public WebSettings getSettings() { 4172 checkThread(); 4173 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4174 } 4175 4176 /** 4177 * Return the list of currently loaded plugins. 4178 * @return The list of currently loaded plugins. 4179 * 4180 * @hide 4181 * @deprecated This was used for Gears, which has been deprecated. 4182 */ 4183 @Deprecated 4184 public static synchronized PluginList getPluginList() { 4185 checkThread(); 4186 return new PluginList(); 4187 } 4188 4189 /** 4190 * @hide 4191 * @deprecated This was used for Gears, which has been deprecated. 4192 */ 4193 @Deprecated 4194 public void refreshPlugins(boolean reloadOpenPages) { 4195 checkThread(); 4196 } 4197 4198 //------------------------------------------------------------------------- 4199 // Override View methods 4200 //------------------------------------------------------------------------- 4201 4202 @Override 4203 protected void finalize() throws Throwable { 4204 try { 4205 if (mNativeClass != 0) { 4206 mPrivateHandler.post(new Runnable() { 4207 @Override 4208 public void run() { 4209 destroy(); 4210 } 4211 }); 4212 } 4213 } finally { 4214 super.finalize(); 4215 } 4216 } 4217 4218 @Override 4219 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4220 if (child == mTitleBar) { 4221 // When drawing the title bar, move it horizontally to always show 4222 // at the top of the WebView. 4223 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4224 int newTop = 0; 4225 if (mTitleGravity == Gravity.NO_GRAVITY) { 4226 newTop = Math.min(0, mScrollY); 4227 } else if (mTitleGravity == Gravity.TOP) { 4228 newTop = mScrollY; 4229 } 4230 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4231 mTitleBar.setTop(newTop); 4232 } 4233 return super.drawChild(canvas, child, drawingTime); 4234 } 4235 4236 private void drawContent(Canvas canvas, boolean drawRings) { 4237 drawCoreAndCursorRing(canvas, mBackgroundColor, 4238 mDrawCursorRing && drawRings); 4239 } 4240 4241 /** 4242 * Draw the background when beyond bounds 4243 * @param canvas Canvas to draw into 4244 */ 4245 private void drawOverScrollBackground(Canvas canvas) { 4246 if (mOverScrollBackground == null) { 4247 mOverScrollBackground = new Paint(); 4248 Bitmap bm = BitmapFactory.decodeResource( 4249 mContext.getResources(), 4250 com.android.internal.R.drawable.status_bar_background); 4251 mOverScrollBackground.setShader(new BitmapShader(bm, 4252 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4253 mOverScrollBorder = new Paint(); 4254 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4255 mOverScrollBorder.setStrokeWidth(0); 4256 mOverScrollBorder.setColor(0xffbbbbbb); 4257 } 4258 4259 int top = 0; 4260 int right = computeRealHorizontalScrollRange(); 4261 int bottom = top + computeRealVerticalScrollRange(); 4262 // first draw the background and anchor to the top of the view 4263 canvas.save(); 4264 canvas.translate(mScrollX, mScrollY); 4265 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4266 - mScrollY, Region.Op.DIFFERENCE); 4267 canvas.drawPaint(mOverScrollBackground); 4268 canvas.restore(); 4269 // then draw the border 4270 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4271 // next clip the region for the content 4272 canvas.clipRect(0, top, right, bottom); 4273 } 4274 4275 @Override 4276 protected void onDraw(Canvas canvas) { 4277 if (inFullScreenMode()) { 4278 return; // no need to draw anything if we aren't visible. 4279 } 4280 // if mNativeClass is 0, the WebView is either destroyed or not 4281 // initialized. In either case, just draw the background color and return 4282 if (mNativeClass == 0) { 4283 canvas.drawColor(mBackgroundColor); 4284 return; 4285 } 4286 4287 // if both mContentWidth and mContentHeight are 0, it means there is no 4288 // valid Picture passed to WebView yet. This can happen when WebView 4289 // just starts. Draw the background and return. 4290 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4291 canvas.drawColor(mBackgroundColor); 4292 return; 4293 } 4294 4295 if (canvas.isHardwareAccelerated()) { 4296 if (mIncrementEGLContextHack == false) { 4297 mIncrementEGLContextHack = true; 4298 EGL10 egl = (EGL10) EGLContext.getEGL(); 4299 EGLDisplay eglDisplay = egl.eglGetDisplay(EGL_DEFAULT_DISPLAY); 4300 int[] version = new int[2]; 4301 egl.eglInitialize(eglDisplay, version); 4302 } 4303 mZoomManager.setHardwareAccelerated(); 4304 } 4305 4306 int saveCount = canvas.save(); 4307 if (mInOverScrollMode && !getSettings() 4308 .getUseWebViewBackgroundForOverscrollBackground()) { 4309 drawOverScrollBackground(canvas); 4310 } 4311 if (mTitleBar != null) { 4312 canvas.translate(0, getTitleHeight()); 4313 } 4314 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4315 && (mTouchMode == TOUCH_INIT_MODE 4316 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4317 || mTouchMode == TOUCH_SHORTPRESS_MODE 4318 || mTouchMode == TOUCH_DONE_MODE); 4319 boolean drawNativeRings = !drawJavaRings; 4320 if (USE_WEBKIT_RINGS) { 4321 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4322 } 4323 drawContent(canvas, drawNativeRings); 4324 canvas.restoreToCount(saveCount); 4325 4326 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4327 invalidate(); 4328 } 4329 mWebViewCore.signalRepaintDone(); 4330 4331 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4332 invalidate(); 4333 } 4334 4335 // paint the highlight in the end 4336 if (drawJavaRings) { 4337 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4338 if (delay < ViewConfiguration.getTapTimeout()) { 4339 Rect r = mTouchHighlightRegion.getBounds(); 4340 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4341 } else { 4342 if (mTouchHightlightPaint == null) { 4343 mTouchHightlightPaint = new Paint(); 4344 mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR); 4345 } 4346 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4347 Rect r = new Rect(); 4348 while (iter.next(r)) { 4349 canvas.drawRect(r, mTouchHightlightPaint); 4350 } 4351 } 4352 } 4353 if (DEBUG_TOUCH_HIGHLIGHT) { 4354 if (getSettings().getNavDump()) { 4355 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4356 if (mTouchCrossHairColor == null) { 4357 mTouchCrossHairColor = new Paint(); 4358 mTouchCrossHairColor.setColor(Color.RED); 4359 } 4360 canvas.drawLine(mTouchHighlightX - mNavSlop, 4361 mTouchHighlightY - mNavSlop, mTouchHighlightX 4362 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4363 + 1, mTouchCrossHairColor); 4364 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4365 mTouchHighlightY - mNavSlop, mTouchHighlightX 4366 - mNavSlop, 4367 mTouchHighlightY + mNavSlop + 1, 4368 mTouchCrossHairColor); 4369 } 4370 } 4371 } 4372 } 4373 4374 private void removeTouchHighlight() { 4375 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4376 mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS); 4377 setTouchHighlightRects(null); 4378 } 4379 4380 @Override 4381 public void setLayoutParams(ViewGroup.LayoutParams params) { 4382 if (params.height == LayoutParams.WRAP_CONTENT) { 4383 mWrapContent = true; 4384 } 4385 super.setLayoutParams(params); 4386 } 4387 4388 @Override 4389 public boolean performLongClick() { 4390 // performLongClick() is the result of a delayed message. If we switch 4391 // to windows overview, the WebView will be temporarily removed from the 4392 // view system. In that case, do nothing. 4393 if (getParent() == null) return false; 4394 4395 // A multi-finger gesture can look like a long press; make sure we don't take 4396 // long press actions if we're scaling. 4397 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4398 if (detector != null && detector.isInProgress()) { 4399 return false; 4400 } 4401 4402 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4403 // Send the click so that the textfield is in focus 4404 centerKeyPressOnTextField(); 4405 rebuildWebTextView(); 4406 } else { 4407 clearTextEntry(); 4408 } 4409 if (inEditingMode()) { 4410 // Since we just called rebuildWebTextView, the layout is not set 4411 // properly. Update it so it can correctly find the word to select. 4412 mWebTextView.ensureLayout(); 4413 // Provide a touch down event to WebTextView, which will allow it 4414 // to store the location to use in performLongClick. 4415 AbsoluteLayout.LayoutParams params 4416 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4417 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4418 mLastTouchTime, MotionEvent.ACTION_DOWN, 4419 mLastTouchX - params.x + mScrollX, 4420 mLastTouchY - params.y + mScrollY, 0); 4421 mWebTextView.dispatchTouchEvent(fake); 4422 return mWebTextView.performLongClick(); 4423 } 4424 if (mSelectingText) return false; // long click does nothing on selection 4425 /* if long click brings up a context menu, the super function 4426 * returns true and we're done. Otherwise, nothing happened when 4427 * the user clicked. */ 4428 if (super.performLongClick()) { 4429 return true; 4430 } 4431 /* In the case where the application hasn't already handled the long 4432 * click action, look for a word under the click. If one is found, 4433 * animate the text selection into view. 4434 * FIXME: no animation code yet */ 4435 final boolean isSelecting = selectText(); 4436 if (isSelecting) { 4437 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4438 } 4439 return isSelecting; 4440 } 4441 4442 /** 4443 * Select the word at the last click point. 4444 * 4445 * @hide This is an implementation detail. 4446 */ 4447 public boolean selectText() { 4448 int x = viewToContentX(mLastTouchX + mScrollX); 4449 int y = viewToContentY(mLastTouchY + mScrollY); 4450 return selectText(x, y); 4451 } 4452 4453 /** 4454 * Select the word at the indicated content coordinates. 4455 */ 4456 boolean selectText(int x, int y) { 4457 if (!setUpSelect(true, x, y)) { 4458 return false; 4459 } 4460 nativeSetExtendSelection(); 4461 mDrawSelectionPointer = false; 4462 mTouchMode = TOUCH_DRAG_MODE; 4463 return true; 4464 } 4465 4466 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4467 4468 @Override 4469 protected void onConfigurationChanged(Configuration newConfig) { 4470 mCachedOverlappingActionModeHeight = -1; 4471 if (mSelectingText && mOrientation != newConfig.orientation) { 4472 selectionDone(); 4473 } 4474 mOrientation = newConfig.orientation; 4475 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4476 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4477 } 4478 } 4479 4480 /** 4481 * Keep track of the Callback so we can end its ActionMode or remove its 4482 * titlebar. 4483 */ 4484 private SelectActionModeCallback mSelectCallback; 4485 4486 // These values are possible options for didUpdateWebTextViewDimensions. 4487 private static final int FULLY_ON_SCREEN = 0; 4488 private static final int INTERSECTS_SCREEN = 1; 4489 private static final int ANYWHERE = 2; 4490 4491 /** 4492 * Check to see if the focused textfield/textarea is still on screen. If it 4493 * is, update the the dimensions and location of WebTextView. Otherwise, 4494 * remove the WebTextView. Should be called when the zoom level changes. 4495 * @param intersection How to determine whether the textfield/textarea is 4496 * still on screen. 4497 * @return boolean True if the textfield/textarea is still on screen and the 4498 * dimensions/location of WebTextView have been updated. 4499 */ 4500 private boolean didUpdateWebTextViewDimensions(int intersection) { 4501 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4502 Rect vBox = contentToViewRect(contentBounds); 4503 Rect visibleRect = new Rect(); 4504 calcOurVisibleRect(visibleRect); 4505 offsetByLayerScrollPosition(vBox); 4506 // If the textfield is on screen, place the WebTextView in 4507 // its new place, accounting for our new scroll/zoom values, 4508 // and adjust its textsize. 4509 boolean onScreen; 4510 switch (intersection) { 4511 case FULLY_ON_SCREEN: 4512 onScreen = visibleRect.contains(vBox); 4513 break; 4514 case INTERSECTS_SCREEN: 4515 onScreen = Rect.intersects(visibleRect, vBox); 4516 break; 4517 case ANYWHERE: 4518 onScreen = true; 4519 break; 4520 default: 4521 throw new AssertionError( 4522 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4523 } 4524 if (onScreen) { 4525 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4526 vBox.height()); 4527 mWebTextView.updateTextSize(); 4528 updateWebTextViewPadding(); 4529 return true; 4530 } else { 4531 // The textfield is now off screen. The user probably 4532 // was not zooming to see the textfield better. Remove 4533 // the WebTextView. If the user types a key, and the 4534 // textfield is still in focus, we will reconstruct 4535 // the WebTextView and scroll it back on screen. 4536 mWebTextView.remove(); 4537 return false; 4538 } 4539 } 4540 4541 private void offsetByLayerScrollPosition(Rect box) { 4542 if ((mCurrentScrollingLayerId != 0) 4543 && (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) { 4544 box.offsetTo(box.left - mScrollingLayerRect.left, 4545 box.top - mScrollingLayerRect.top); 4546 } 4547 } 4548 4549 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4550 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4551 if (mNativeClass == 0) 4552 return; 4553 nativeSetBaseLayer(mNativeClass, layer, invalRegion, showVisualIndicator, 4554 isPictureAfterFirstLayout, registerPageSwapCallback); 4555 if (mHTML5VideoViewProxy != null) { 4556 mHTML5VideoViewProxy.setBaseLayer(layer); 4557 } 4558 } 4559 4560 int getBaseLayer() { 4561 if (mNativeClass == 0) { 4562 return 0; 4563 } 4564 return nativeGetBaseLayer(); 4565 } 4566 4567 private void onZoomAnimationStart() { 4568 // If it is in password mode, turn it off so it does not draw misplaced. 4569 if (inEditingMode()) { 4570 mWebTextView.setVisibility(INVISIBLE); 4571 } 4572 } 4573 4574 private void onZoomAnimationEnd() { 4575 // adjust the edit text view if needed 4576 if (inEditingMode() 4577 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4578 // If it is a password field, start drawing the WebTextView once 4579 // again. 4580 mWebTextView.setVisibility(VISIBLE); 4581 } 4582 } 4583 4584 void onFixedLengthZoomAnimationStart() { 4585 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4586 onZoomAnimationStart(); 4587 } 4588 4589 void onFixedLengthZoomAnimationEnd() { 4590 if (!mBlockWebkitViewMessages && !mSelectingText) { 4591 WebViewCore.resumeUpdatePicture(mWebViewCore); 4592 } 4593 onZoomAnimationEnd(); 4594 } 4595 4596 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4597 Paint.DITHER_FLAG | 4598 Paint.SUBPIXEL_TEXT_FLAG; 4599 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4600 Paint.DITHER_FLAG; 4601 4602 private final DrawFilter mZoomFilter = 4603 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4604 // If we need to trade better quality for speed, set mScrollFilter to null 4605 private final DrawFilter mScrollFilter = 4606 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4607 4608 private void drawCoreAndCursorRing(Canvas canvas, int color, 4609 boolean drawCursorRing) { 4610 if (mDrawHistory) { 4611 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4612 canvas.drawPicture(mHistoryPicture); 4613 return; 4614 } 4615 if (mNativeClass == 0) return; 4616 4617 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4618 boolean animateScroll = ((!mScroller.isFinished() 4619 || mVelocityTracker != null) 4620 && (mTouchMode != TOUCH_DRAG_MODE || 4621 mHeldMotionless != MOTIONLESS_TRUE)) 4622 || mDeferTouchMode == TOUCH_DRAG_MODE; 4623 if (mTouchMode == TOUCH_DRAG_MODE) { 4624 if (mHeldMotionless == MOTIONLESS_PENDING) { 4625 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4626 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4627 mHeldMotionless = MOTIONLESS_FALSE; 4628 } 4629 if (mHeldMotionless == MOTIONLESS_FALSE) { 4630 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4631 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4632 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4633 .obtainMessage(AWAKEN_SCROLL_BARS), 4634 ViewConfiguration.getScrollDefaultDelay()); 4635 mHeldMotionless = MOTIONLESS_PENDING; 4636 } 4637 } 4638 int saveCount = canvas.save(); 4639 if (animateZoom) { 4640 mZoomManager.animateZoom(canvas); 4641 } else if (!canvas.isHardwareAccelerated()) { 4642 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4643 } 4644 4645 boolean UIAnimationsRunning = false; 4646 // Currently for each draw we compute the animation values; 4647 // We may in the future decide to do that independently. 4648 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 4649 && nativeEvaluateLayersAnimations(mNativeClass)) { 4650 UIAnimationsRunning = true; 4651 // If we have unfinished (or unstarted) animations, 4652 // we ask for a repaint. We only need to do this in software 4653 // rendering (with hardware rendering we already have a different 4654 // method of requesting a repaint) 4655 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 4656 invalidate(); 4657 } 4658 4659 // decide which adornments to draw 4660 int extras = DRAW_EXTRAS_NONE; 4661 if (mFindIsUp) { 4662 extras = DRAW_EXTRAS_FIND; 4663 } else if (mSelectingText && (!USE_JAVA_TEXT_SELECTION || DEBUG_TEXT_HANDLES)) { 4664 extras = DRAW_EXTRAS_SELECTION; 4665 nativeSetSelectionPointer(mNativeClass, 4666 mDrawSelectionPointer, 4667 mZoomManager.getInvScale(), mSelectX, mSelectY - getTitleHeight()); 4668 } else if (drawCursorRing) { 4669 extras = DRAW_EXTRAS_CURSOR_RING; 4670 } 4671 if (DebugFlags.WEB_VIEW) { 4672 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4673 + " mSelectingText=" + mSelectingText 4674 + " nativePageShouldHandleShiftAndArrows()=" 4675 + nativePageShouldHandleShiftAndArrows() 4676 + " animateZoom=" + animateZoom 4677 + " extras=" + extras); 4678 } 4679 4680 calcOurContentVisibleRectF(mVisibleContentRect); 4681 if (canvas.isHardwareAccelerated()) { 4682 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4683 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4684 4685 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4686 viewRectViewport, mVisibleContentRect, getScale(), extras); 4687 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4688 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4689 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4690 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4691 } 4692 4693 } else { 4694 DrawFilter df = null; 4695 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4696 df = mZoomFilter; 4697 } else if (animateScroll) { 4698 df = mScrollFilter; 4699 } 4700 canvas.setDrawFilter(df); 4701 // XXX: Revisit splitting content. Right now it causes a 4702 // synchronization problem with layers. 4703 int content = nativeDraw(canvas, mVisibleContentRect, color, 4704 extras, false); 4705 canvas.setDrawFilter(null); 4706 if (!mBlockWebkitViewMessages && content != 0) { 4707 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4708 } 4709 } 4710 4711 canvas.restoreToCount(saveCount); 4712 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4713 drawTextSelectionHandles(canvas); 4714 } 4715 4716 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4717 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4718 mTouchMode = TOUCH_SHORTPRESS_MODE; 4719 } 4720 } 4721 if (mFocusSizeChanged) { 4722 mFocusSizeChanged = false; 4723 // If we are zooming, this will get handled above, when the zoom 4724 // finishes. We also do not need to do this unless the WebTextView 4725 // is showing. With hardware acceleration, the pageSwapCallback() 4726 // updates the WebTextView position in sync with page swapping 4727 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4728 didUpdateWebTextViewDimensions(ANYWHERE); 4729 } 4730 } 4731 } 4732 4733 private void drawTextSelectionHandles(Canvas canvas) { 4734 if (mTextSelectionPaint == null) { 4735 mTextSelectionPaint = new Paint(); 4736 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4737 } 4738 mTextSelectionRegion.setEmpty(); 4739 nativeGetTextSelectionRegion(mNativeClass, mTextSelectionRegion); 4740 Rect r = new Rect(); 4741 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4742 Rect clip = canvas.getClipBounds(); 4743 while (iter.next(r)) { 4744 r.set(contentToViewDimension(r.left), 4745 contentToViewDimension(r.top), 4746 contentToViewDimension(r.right), 4747 contentToViewDimension(r.bottom)); 4748 if (r.intersect(clip)) { 4749 canvas.drawRect(r, mTextSelectionPaint); 4750 } 4751 } 4752 if (mSelectHandleLeft == null) { 4753 mSelectHandleLeft = mContext.getResources().getDrawable( 4754 com.android.internal.R.drawable.text_select_handle_left); 4755 } 4756 int[] handles = new int[4]; 4757 nativeGetSelectionHandles(mNativeClass, handles); 4758 int start_x = contentToViewDimension(handles[0]); 4759 int start_y = contentToViewDimension(handles[1]); 4760 int end_x = contentToViewDimension(handles[2]); 4761 int end_y = contentToViewDimension(handles[3]); 4762 // Magic formula copied from TextView 4763 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4764 mSelectHandleLeft.setBounds(start_x, start_y, 4765 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4766 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4767 if (mSelectHandleRight == null) { 4768 mSelectHandleRight = mContext.getResources().getDrawable( 4769 com.android.internal.R.drawable.text_select_handle_right); 4770 } 4771 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4772 mSelectHandleRight.setBounds(end_x, end_y, 4773 end_x + mSelectHandleRight.getIntrinsicWidth(), 4774 end_y + mSelectHandleRight.getIntrinsicHeight()); 4775 if (DEBUG_TEXT_HANDLES) { 4776 mSelectHandleLeft.setAlpha(125); 4777 mSelectHandleRight.setAlpha(125); 4778 } 4779 mSelectHandleLeft.draw(canvas); 4780 mSelectHandleRight.draw(canvas); 4781 } 4782 4783 // draw history 4784 private boolean mDrawHistory = false; 4785 private Picture mHistoryPicture = null; 4786 private int mHistoryWidth = 0; 4787 private int mHistoryHeight = 0; 4788 4789 // Only check the flag, can be called from WebCore thread 4790 boolean drawHistory() { 4791 return mDrawHistory; 4792 } 4793 4794 int getHistoryPictureWidth() { 4795 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4796 } 4797 4798 // Should only be called in UI thread 4799 void switchOutDrawHistory() { 4800 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4801 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4802 mDrawHistory = false; 4803 mHistoryPicture = null; 4804 invalidate(); 4805 int oldScrollX = mScrollX; 4806 int oldScrollY = mScrollY; 4807 mScrollX = pinLocX(mScrollX); 4808 mScrollY = pinLocY(mScrollY); 4809 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4810 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4811 } else { 4812 sendOurVisibleRect(); 4813 } 4814 } 4815 } 4816 4817 WebViewCore.CursorData cursorData() { 4818 WebViewCore.CursorData result = cursorDataNoPosition(); 4819 Point position = nativeCursorPosition(); 4820 result.mX = position.x; 4821 result.mY = position.y; 4822 return result; 4823 } 4824 4825 WebViewCore.CursorData cursorDataNoPosition() { 4826 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4827 result.mMoveGeneration = nativeMoveGeneration(); 4828 result.mFrame = nativeCursorFramePointer(); 4829 return result; 4830 } 4831 4832 /** 4833 * Delete text from start to end in the focused textfield. If there is no 4834 * focus, or if start == end, silently fail. If start and end are out of 4835 * order, swap them. 4836 * @param start Beginning of selection to delete. 4837 * @param end End of selection to delete. 4838 */ 4839 /* package */ void deleteSelection(int start, int end) { 4840 mTextGeneration++; 4841 WebViewCore.TextSelectionData data 4842 = new WebViewCore.TextSelectionData(start, end); 4843 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4844 data); 4845 } 4846 4847 /** 4848 * Set the selection to (start, end) in the focused textfield. If start and 4849 * end are out of order, swap them. 4850 * @param start Beginning of selection. 4851 * @param end End of selection. 4852 */ 4853 /* package */ void setSelection(int start, int end) { 4854 if (mWebViewCore != null) { 4855 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4856 } 4857 } 4858 4859 @Override 4860 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4861 InputConnection connection = super.onCreateInputConnection(outAttrs); 4862 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4863 return connection; 4864 } 4865 4866 /** 4867 * Called in response to a message from webkit telling us that the soft 4868 * keyboard should be launched. 4869 */ 4870 private void displaySoftKeyboard(boolean isTextView) { 4871 InputMethodManager imm = (InputMethodManager) 4872 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4873 4874 // bring it back to the default level scale so that user can enter text 4875 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4876 if (zoom) { 4877 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4878 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4879 } 4880 if (isTextView) { 4881 rebuildWebTextView(); 4882 if (inEditingMode()) { 4883 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4884 if (zoom) { 4885 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4886 } 4887 return; 4888 } 4889 } 4890 // Used by plugins and contentEditable. 4891 // Also used if the navigation cache is out of date, and 4892 // does not recognize that a textfield is in focus. In that 4893 // case, use WebView as the targeted view. 4894 // see http://b/issue?id=2457459 4895 imm.showSoftInput(this, 0); 4896 } 4897 4898 // Called by WebKit to instruct the UI to hide the keyboard 4899 private void hideSoftKeyboard() { 4900 InputMethodManager imm = InputMethodManager.peekInstance(); 4901 if (imm != null && (imm.isActive(this) 4902 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4903 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4904 } 4905 } 4906 4907 /* 4908 * This method checks the current focus and cursor and potentially rebuilds 4909 * mWebTextView to have the appropriate properties, such as password, 4910 * multiline, and what text it contains. It also removes it if necessary. 4911 */ 4912 /* package */ void rebuildWebTextView() { 4913 // If the WebView does not have focus, do nothing until it gains focus. 4914 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4915 return; 4916 } 4917 boolean alreadyThere = inEditingMode(); 4918 // inEditingMode can only return true if mWebTextView is non-null, 4919 // so we can safely call remove() if (alreadyThere) 4920 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4921 if (alreadyThere) { 4922 mWebTextView.remove(); 4923 } 4924 return; 4925 } 4926 // At this point, we know we have found an input field, so go ahead 4927 // and create the WebTextView if necessary. 4928 if (mWebTextView == null) { 4929 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4930 // Initialize our generation number. 4931 mTextGeneration = 0; 4932 } 4933 mWebTextView.updateTextSize(); 4934 updateWebTextViewPosition(); 4935 String text = nativeFocusCandidateText(); 4936 int nodePointer = nativeFocusCandidatePointer(); 4937 // This needs to be called before setType, which may call 4938 // requestFormData, and it needs to have the correct nodePointer. 4939 mWebTextView.setNodePointer(nodePointer); 4940 mWebTextView.setType(nativeFocusCandidateType()); 4941 // Gravity needs to be set after setType 4942 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 4943 if (null == text) { 4944 if (DebugFlags.WEB_VIEW) { 4945 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4946 } 4947 text = ""; 4948 } 4949 mWebTextView.setTextAndKeepSelection(text); 4950 InputMethodManager imm = InputMethodManager.peekInstance(); 4951 if (imm != null && imm.isActive(mWebTextView)) { 4952 imm.restartInput(mWebTextView); 4953 mWebTextView.clearComposingText(); 4954 } 4955 if (isFocused()) { 4956 mWebTextView.requestFocus(); 4957 } 4958 } 4959 4960 private void updateWebTextViewPosition() { 4961 Rect visibleRect = new Rect(); 4962 calcOurContentVisibleRect(visibleRect); 4963 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4964 // should be in content coordinates. 4965 Rect bounds = nativeFocusCandidateNodeBounds(); 4966 Rect vBox = contentToViewRect(bounds); 4967 offsetByLayerScrollPosition(vBox); 4968 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4969 if (!Rect.intersects(bounds, visibleRect)) { 4970 revealSelection(); 4971 } 4972 updateWebTextViewPadding(); 4973 } 4974 4975 /** 4976 * Update the padding of mWebTextView based on the native textfield/textarea 4977 */ 4978 void updateWebTextViewPadding() { 4979 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4980 if (paddingRect != null) { 4981 // Use contentToViewDimension since these are the dimensions of 4982 // the padding. 4983 mWebTextView.setPadding( 4984 contentToViewDimension(paddingRect.left), 4985 contentToViewDimension(paddingRect.top), 4986 contentToViewDimension(paddingRect.right), 4987 contentToViewDimension(paddingRect.bottom)); 4988 } 4989 } 4990 4991 /** 4992 * Tell webkit to put the cursor on screen. 4993 */ 4994 /* package */ void revealSelection() { 4995 if (mWebViewCore != null) { 4996 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4997 } 4998 } 4999 5000 /** 5001 * Called by WebTextView to find saved form data associated with the 5002 * textfield 5003 * @param name Name of the textfield. 5004 * @param nodePointer Pointer to the node of the textfield, so it can be 5005 * compared to the currently focused textfield when the data is 5006 * retrieved. 5007 * @param autoFillable true if WebKit has determined this field is part of 5008 * a form that can be auto filled. 5009 * @param autoComplete true if the attribute "autocomplete" is set to true 5010 * on the textfield. 5011 */ 5012 /* package */ void requestFormData(String name, int nodePointer, 5013 boolean autoFillable, boolean autoComplete) { 5014 if (mWebViewCore.getSettings().getSaveFormData()) { 5015 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 5016 update.arg1 = nodePointer; 5017 RequestFormData updater = new RequestFormData(name, getUrl(), 5018 update, autoFillable, autoComplete); 5019 Thread t = new Thread(updater); 5020 t.start(); 5021 } 5022 } 5023 5024 /** 5025 * Pass a message to find out the <label> associated with the <input> 5026 * identified by nodePointer 5027 * @param framePointer Pointer to the frame containing the <input> node 5028 * @param nodePointer Pointer to the node for which a <label> is desired. 5029 */ 5030 /* package */ void requestLabel(int framePointer, int nodePointer) { 5031 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 5032 nodePointer); 5033 } 5034 5035 /* 5036 * This class requests an Adapter for the WebTextView which shows past 5037 * entries stored in the database. It is a Runnable so that it can be done 5038 * in its own thread, without slowing down the UI. 5039 */ 5040 private class RequestFormData implements Runnable { 5041 private String mName; 5042 private String mUrl; 5043 private Message mUpdateMessage; 5044 private boolean mAutoFillable; 5045 private boolean mAutoComplete; 5046 private WebSettings mWebSettings; 5047 5048 public RequestFormData(String name, String url, Message msg, 5049 boolean autoFillable, boolean autoComplete) { 5050 mName = name; 5051 mUrl = WebTextView.urlForAutoCompleteData(url); 5052 mUpdateMessage = msg; 5053 mAutoFillable = autoFillable; 5054 mAutoComplete = autoComplete; 5055 mWebSettings = getSettings(); 5056 } 5057 5058 public void run() { 5059 ArrayList<String> pastEntries = new ArrayList<String>(); 5060 5061 if (mAutoFillable) { 5062 // Note that code inside the adapter click handler in WebTextView depends 5063 // on the AutoFill item being at the top of the drop down list. If you change 5064 // the order, make sure to do it there too! 5065 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5066 pastEntries.add(getResources().getText( 5067 com.android.internal.R.string.autofill_this_form).toString() + 5068 " " + 5069 mAutoFillData.getPreviewString()); 5070 mWebTextView.setAutoFillProfileIsSet(true); 5071 } else { 5072 // There is no autofill profile set up yet, so add an option that 5073 // will invite the user to set their profile up. 5074 pastEntries.add(getResources().getText( 5075 com.android.internal.R.string.setup_autofill).toString()); 5076 mWebTextView.setAutoFillProfileIsSet(false); 5077 } 5078 } 5079 5080 if (mAutoComplete) { 5081 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5082 } 5083 5084 if (pastEntries.size() > 0) { 5085 AutoCompleteAdapter adapter = new 5086 AutoCompleteAdapter(mContext, pastEntries); 5087 mUpdateMessage.obj = adapter; 5088 mUpdateMessage.sendToTarget(); 5089 } 5090 } 5091 } 5092 5093 /** 5094 * Dump the display tree to "/sdcard/displayTree.txt" 5095 * 5096 * @hide debug only 5097 */ 5098 public void dumpDisplayTree() { 5099 nativeDumpDisplayTree(getUrl()); 5100 } 5101 5102 /** 5103 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5104 * "/sdcard/domTree.txt" 5105 * 5106 * @hide debug only 5107 */ 5108 public void dumpDomTree(boolean toFile) { 5109 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5110 } 5111 5112 /** 5113 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5114 * to "/sdcard/renderTree.txt" 5115 * 5116 * @hide debug only 5117 */ 5118 public void dumpRenderTree(boolean toFile) { 5119 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5120 } 5121 5122 /** 5123 * Called by DRT on UI thread, need to proxy to WebCore thread. 5124 * 5125 * @hide debug only 5126 */ 5127 public void useMockDeviceOrientation() { 5128 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5129 } 5130 5131 /** 5132 * Called by DRT on WebCore thread. 5133 * 5134 * @hide debug only 5135 */ 5136 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5137 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5138 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5139 canProvideGamma, gamma); 5140 } 5141 5142 // This is used to determine long press with the center key. Does not 5143 // affect long press with the trackball/touch. 5144 private boolean mGotCenterDown = false; 5145 5146 @Override 5147 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5148 if (mBlockWebkitViewMessages) { 5149 return false; 5150 } 5151 // send complex characters to webkit for use by JS and plugins 5152 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5153 // pass the key to DOM 5154 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5155 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5156 // return true as DOM handles the key 5157 return true; 5158 } 5159 return false; 5160 } 5161 5162 private boolean isEnterActionKey(int keyCode) { 5163 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5164 || keyCode == KeyEvent.KEYCODE_ENTER 5165 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5166 } 5167 5168 @Override 5169 public boolean onKeyDown(int keyCode, KeyEvent event) { 5170 if (DebugFlags.WEB_VIEW) { 5171 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5172 + "keyCode=" + keyCode 5173 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5174 } 5175 if (mBlockWebkitViewMessages) { 5176 return false; 5177 } 5178 5179 // don't implement accelerator keys here; defer to host application 5180 if (event.isCtrlPressed()) { 5181 return false; 5182 } 5183 5184 if (mNativeClass == 0) { 5185 return false; 5186 } 5187 5188 // do this hack up front, so it always works, regardless of touch-mode 5189 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5190 mAutoRedraw = !mAutoRedraw; 5191 if (mAutoRedraw) { 5192 invalidate(); 5193 } 5194 return true; 5195 } 5196 5197 // Bubble up the key event if 5198 // 1. it is a system key; or 5199 // 2. the host application wants to handle it; 5200 if (event.isSystem() 5201 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5202 return false; 5203 } 5204 5205 // accessibility support 5206 if (accessibilityScriptInjected()) { 5207 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5208 // if an accessibility script is injected we delegate to it the key handling. 5209 // this script is a screen reader which is a fully fledged solution for blind 5210 // users to navigate in and interact with web pages. 5211 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5212 return true; 5213 } else { 5214 // Clean up if accessibility was disabled after loading the current URL. 5215 mAccessibilityScriptInjected = false; 5216 } 5217 } else if (mAccessibilityInjector != null) { 5218 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5219 if (mAccessibilityInjector.onKeyEvent(event)) { 5220 // if an accessibility injector is present (no JavaScript enabled or the site 5221 // opts out injecting our JavaScript screen reader) we let it decide whether 5222 // to act on and consume the event. 5223 return true; 5224 } 5225 } else { 5226 // Clean up if accessibility was disabled after loading the current URL. 5227 mAccessibilityInjector = null; 5228 } 5229 } 5230 5231 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5232 if (event.hasNoModifiers()) { 5233 pageUp(false); 5234 return true; 5235 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5236 pageUp(true); 5237 return true; 5238 } 5239 } 5240 5241 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5242 if (event.hasNoModifiers()) { 5243 pageDown(false); 5244 return true; 5245 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5246 pageDown(true); 5247 return true; 5248 } 5249 } 5250 5251 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5252 pageUp(true); 5253 return true; 5254 } 5255 5256 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5257 pageDown(true); 5258 return true; 5259 } 5260 5261 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5262 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5263 switchOutDrawHistory(); 5264 if (nativePageShouldHandleShiftAndArrows()) { 5265 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5266 return true; 5267 } 5268 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5269 switch (keyCode) { 5270 case KeyEvent.KEYCODE_DPAD_UP: 5271 pageUp(true); 5272 return true; 5273 case KeyEvent.KEYCODE_DPAD_DOWN: 5274 pageDown(true); 5275 return true; 5276 case KeyEvent.KEYCODE_DPAD_LEFT: 5277 nativeClearCursor(); // start next trackball movement from page edge 5278 return pinScrollTo(0, mScrollY, true, 0); 5279 case KeyEvent.KEYCODE_DPAD_RIGHT: 5280 nativeClearCursor(); // start next trackball movement from page edge 5281 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5282 } 5283 } 5284 if (mSelectingText) { 5285 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5286 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5287 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5288 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5289 int multiplier = event.getRepeatCount() + 1; 5290 moveSelection(xRate * multiplier, yRate * multiplier); 5291 return true; 5292 } 5293 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5294 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5295 return true; 5296 } 5297 // Bubble up the key event as WebView doesn't handle it 5298 return false; 5299 } 5300 5301 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5302 switchOutDrawHistory(); 5303 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5304 || nativeCursorWantsKeyEvents(); 5305 if (event.getRepeatCount() == 0) { 5306 if (mSelectingText) { 5307 return true; // discard press if copy in progress 5308 } 5309 mGotCenterDown = true; 5310 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5311 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5312 if (!wantsKeyEvents) return true; 5313 } 5314 // Bubble up the key event as WebView doesn't handle it 5315 if (!wantsKeyEvents) return false; 5316 } 5317 5318 if (getSettings().getNavDump()) { 5319 switch (keyCode) { 5320 case KeyEvent.KEYCODE_4: 5321 dumpDisplayTree(); 5322 break; 5323 case KeyEvent.KEYCODE_5: 5324 case KeyEvent.KEYCODE_6: 5325 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5326 break; 5327 case KeyEvent.KEYCODE_7: 5328 case KeyEvent.KEYCODE_8: 5329 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5330 break; 5331 } 5332 } 5333 5334 if (nativeCursorIsTextInput()) { 5335 // This message will put the node in focus, for the DOM's notion 5336 // of focus. 5337 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5338 nativeCursorNodePointer()); 5339 // This will bring up the WebTextView and put it in focus, for 5340 // our view system's notion of focus 5341 rebuildWebTextView(); 5342 // Now we need to pass the event to it 5343 if (inEditingMode()) { 5344 mWebTextView.setDefaultSelection(); 5345 return mWebTextView.dispatchKeyEvent(event); 5346 } 5347 } else if (nativeHasFocusNode()) { 5348 // In this case, the cursor is not on a text input, but the focus 5349 // might be. Check it, and if so, hand over to the WebTextView. 5350 rebuildWebTextView(); 5351 if (inEditingMode()) { 5352 mWebTextView.setDefaultSelection(); 5353 return mWebTextView.dispatchKeyEvent(event); 5354 } 5355 } 5356 5357 // TODO: should we pass all the keys to DOM or check the meta tag 5358 if (nativeCursorWantsKeyEvents() || true) { 5359 // pass the key to DOM 5360 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5361 // return true as DOM handles the key 5362 return true; 5363 } 5364 5365 // Bubble up the key event as WebView doesn't handle it 5366 return false; 5367 } 5368 5369 @Override 5370 public boolean onKeyUp(int keyCode, KeyEvent event) { 5371 if (DebugFlags.WEB_VIEW) { 5372 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5373 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5374 } 5375 if (mBlockWebkitViewMessages) { 5376 return false; 5377 } 5378 5379 if (mNativeClass == 0) { 5380 return false; 5381 } 5382 5383 // special CALL handling when cursor node's href is "tel:XXX" 5384 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5385 String text = nativeCursorText(); 5386 if (!nativeCursorIsTextInput() && text != null 5387 && text.startsWith(SCHEME_TEL)) { 5388 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5389 getContext().startActivity(intent); 5390 return true; 5391 } 5392 } 5393 5394 // Bubble up the key event if 5395 // 1. it is a system key; or 5396 // 2. the host application wants to handle it; 5397 if (event.isSystem() 5398 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5399 return false; 5400 } 5401 5402 // accessibility support 5403 if (accessibilityScriptInjected()) { 5404 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5405 // if an accessibility script is injected we delegate to it the key handling. 5406 // this script is a screen reader which is a fully fledged solution for blind 5407 // users to navigate in and interact with web pages. 5408 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5409 return true; 5410 } else { 5411 // Clean up if accessibility was disabled after loading the current URL. 5412 mAccessibilityScriptInjected = false; 5413 } 5414 } else if (mAccessibilityInjector != null) { 5415 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5416 if (mAccessibilityInjector.onKeyEvent(event)) { 5417 // if an accessibility injector is present (no JavaScript enabled or the site 5418 // opts out injecting our JavaScript screen reader) we let it decide whether to 5419 // act on and consume the event. 5420 return true; 5421 } 5422 } else { 5423 // Clean up if accessibility was disabled after loading the current URL. 5424 mAccessibilityInjector = null; 5425 } 5426 } 5427 5428 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5429 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5430 if (nativePageShouldHandleShiftAndArrows()) { 5431 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5432 return true; 5433 } 5434 // always handle the navigation keys in the UI thread 5435 // Bubble up the key event as WebView doesn't handle it 5436 return false; 5437 } 5438 5439 if (isEnterActionKey(keyCode)) { 5440 // remove the long press message first 5441 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5442 mGotCenterDown = false; 5443 5444 if (mSelectingText) { 5445 if (mExtendSelection) { 5446 copySelection(); 5447 selectionDone(); 5448 } else { 5449 mExtendSelection = true; 5450 nativeSetExtendSelection(); 5451 invalidate(); // draw the i-beam instead of the arrow 5452 } 5453 return true; // discard press if copy in progress 5454 } 5455 5456 // perform the single click 5457 Rect visibleRect = sendOurVisibleRect(); 5458 // Note that sendOurVisibleRect calls viewToContent, so the 5459 // coordinates should be in content coordinates. 5460 if (!nativeCursorIntersects(visibleRect)) { 5461 return false; 5462 } 5463 WebViewCore.CursorData data = cursorData(); 5464 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5465 playSoundEffect(SoundEffectConstants.CLICK); 5466 if (nativeCursorIsTextInput()) { 5467 rebuildWebTextView(); 5468 centerKeyPressOnTextField(); 5469 if (inEditingMode()) { 5470 mWebTextView.setDefaultSelection(); 5471 } 5472 return true; 5473 } 5474 clearTextEntry(); 5475 nativeShowCursorTimed(); 5476 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5477 return true; 5478 } 5479 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5480 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5481 nativeCursorNodePointer()); 5482 return true; 5483 } 5484 } 5485 5486 // TODO: should we pass all the keys to DOM or check the meta tag 5487 if (nativeCursorWantsKeyEvents() || true) { 5488 // pass the key to DOM 5489 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5490 // return true as DOM handles the key 5491 return true; 5492 } 5493 5494 // Bubble up the key event as WebView doesn't handle it 5495 return false; 5496 } 5497 5498 /* 5499 * Enter selecting text mode, and see if CAB should be shown. 5500 * Returns true if the WebView is now in 5501 * selecting text mode (including if it was already in that mode, and this 5502 * method did nothing). 5503 */ 5504 private boolean setUpSelect(boolean selectWord, int x, int y) { 5505 if (0 == mNativeClass) return false; // client isn't initialized 5506 if (inFullScreenMode()) return false; 5507 if (mSelectingText) return true; 5508 nativeResetSelection(); 5509 if (selectWord && !nativeWordSelection(x, y)) { 5510 selectionDone(); 5511 return false; 5512 } 5513 mSelectCallback = new SelectActionModeCallback(); 5514 mSelectCallback.setWebView(this); 5515 if (startActionMode(mSelectCallback) == null) { 5516 // There is no ActionMode, so do not allow the user to modify a 5517 // selection. 5518 selectionDone(); 5519 return false; 5520 } 5521 mExtendSelection = false; 5522 mSelectingText = mDrawSelectionPointer = true; 5523 if (DEBUG_TEXT_HANDLES) { 5524 // Debugging text handles requires running in software mode 5525 setLayerType(LAYER_TYPE_SOFTWARE, null); 5526 } 5527 // don't let the picture change during text selection 5528 WebViewCore.pauseUpdatePicture(mWebViewCore); 5529 if (nativeHasCursorNode()) { 5530 Rect rect = nativeCursorNodeBounds(); 5531 mSelectX = contentToViewX(rect.left); 5532 mSelectY = contentToViewY(rect.top); 5533 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5534 mSelectX = mScrollX + mLastTouchX; 5535 mSelectY = mScrollY + mLastTouchY; 5536 } else { 5537 mSelectX = mScrollX + getViewWidth() / 2; 5538 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5539 } 5540 nativeHideCursor(); 5541 mMinAutoScrollX = 0; 5542 mMaxAutoScrollX = getViewWidth(); 5543 mMinAutoScrollY = 0; 5544 mMaxAutoScrollY = getViewHeightWithTitle(); 5545 mCurrentScrollingLayerId = nativeScrollableLayer(viewToContentX(mSelectX), 5546 viewToContentY(mSelectY), mScrollingLayerRect, 5547 mScrollingLayerBounds); 5548 if (mCurrentScrollingLayerId != 0) { 5549 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5550 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5551 contentToViewX(mScrollingLayerBounds.left)); 5552 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5553 contentToViewX(mScrollingLayerBounds.right)); 5554 } 5555 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5556 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5557 contentToViewY(mScrollingLayerBounds.top)); 5558 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5559 contentToViewY(mScrollingLayerBounds.bottom)); 5560 } 5561 } 5562 mMinAutoScrollX += SELECT_SCROLL; 5563 mMaxAutoScrollX -= SELECT_SCROLL; 5564 mMinAutoScrollY += SELECT_SCROLL; 5565 mMaxAutoScrollY -= SELECT_SCROLL; 5566 return true; 5567 } 5568 5569 /** 5570 * Use this method to put the WebView into text selection mode. 5571 * Do not rely on this functionality; it will be deprecated in the future. 5572 * @deprecated This method is now obsolete. 5573 */ 5574 @Deprecated 5575 public void emulateShiftHeld() { 5576 checkThread(); 5577 setUpSelect(false, 0, 0); 5578 } 5579 5580 /** 5581 * Select all of the text in this WebView. 5582 * 5583 * @hide This is an implementation detail. 5584 */ 5585 public void selectAll() { 5586 if (0 == mNativeClass) return; // client isn't initialized 5587 if (inFullScreenMode()) return; 5588 if (!mSelectingText) { 5589 // retrieve a point somewhere within the text 5590 Point select = nativeSelectableText(); 5591 if (!selectText(select.x, select.y)) return; 5592 } 5593 nativeSelectAll(); 5594 mDrawSelectionPointer = false; 5595 mExtendSelection = true; 5596 invalidate(); 5597 } 5598 5599 /** 5600 * Called when the selection has been removed. 5601 */ 5602 void selectionDone() { 5603 if (mSelectingText) { 5604 mSelectingText = false; 5605 if (DEBUG_TEXT_HANDLES) { 5606 // Debugging text handles required running in software mode, set 5607 // back to default now 5608 setLayerType(LAYER_TYPE_NONE, null); 5609 } 5610 // finish is idempotent, so this is fine even if selectionDone was 5611 // called by mSelectCallback.onDestroyActionMode 5612 mSelectCallback.finish(); 5613 mSelectCallback = null; 5614 WebViewCore.resumePriority(); 5615 WebViewCore.resumeUpdatePicture(mWebViewCore); 5616 invalidate(); // redraw without selection 5617 mAutoScrollX = 0; 5618 mAutoScrollY = 0; 5619 mSentAutoScrollMessage = false; 5620 } 5621 } 5622 5623 /** 5624 * Copy the selection to the clipboard 5625 * 5626 * @hide This is an implementation detail. 5627 */ 5628 public boolean copySelection() { 5629 boolean copiedSomething = false; 5630 String selection = getSelection(); 5631 if (selection != null && selection != "") { 5632 if (DebugFlags.WEB_VIEW) { 5633 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5634 } 5635 Toast.makeText(mContext 5636 , com.android.internal.R.string.text_copied 5637 , Toast.LENGTH_SHORT).show(); 5638 copiedSomething = true; 5639 ClipboardManager cm = (ClipboardManager)getContext() 5640 .getSystemService(Context.CLIPBOARD_SERVICE); 5641 cm.setText(selection); 5642 } 5643 invalidate(); // remove selection region and pointer 5644 return copiedSomething; 5645 } 5646 5647 /** 5648 * @hide This is an implementation detail. 5649 */ 5650 public SearchBox getSearchBox() { 5651 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5652 return null; 5653 } 5654 return mWebViewCore.getBrowserFrame().getSearchBox(); 5655 } 5656 5657 /** 5658 * Returns the currently highlighted text as a string. 5659 */ 5660 String getSelection() { 5661 if (mNativeClass == 0) return ""; 5662 return nativeGetSelection(); 5663 } 5664 5665 @Override 5666 protected void onAttachedToWindow() { 5667 super.onAttachedToWindow(); 5668 if (hasWindowFocus()) setActive(true); 5669 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5670 if (mGlobalLayoutListener == null) { 5671 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5672 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5673 } 5674 if (mScrollChangedListener == null) { 5675 mScrollChangedListener = new InnerScrollChangedListener(); 5676 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5677 } 5678 5679 addAccessibilityApisToJavaScript(); 5680 5681 mTouchEventQueue.reset(); 5682 } 5683 5684 @Override 5685 protected void onDetachedFromWindow() { 5686 clearHelpers(); 5687 mZoomManager.dismissZoomPicker(); 5688 if (hasWindowFocus()) setActive(false); 5689 5690 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5691 if (mGlobalLayoutListener != null) { 5692 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5693 mGlobalLayoutListener = null; 5694 } 5695 if (mScrollChangedListener != null) { 5696 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5697 mScrollChangedListener = null; 5698 } 5699 5700 removeAccessibilityApisFromJavaScript(); 5701 5702 super.onDetachedFromWindow(); 5703 } 5704 5705 @Override 5706 protected void onVisibilityChanged(View changedView, int visibility) { 5707 super.onVisibilityChanged(changedView, visibility); 5708 // The zoomManager may be null if the webview is created from XML that 5709 // specifies the view's visibility param as not visible (see http://b/2794841) 5710 if (visibility != View.VISIBLE && mZoomManager != null) { 5711 mZoomManager.dismissZoomPicker(); 5712 } 5713 updateDrawingState(); 5714 } 5715 5716 /** 5717 * @deprecated WebView no longer needs to implement 5718 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5719 */ 5720 // Cannot add @hide as this can always be accessed via the interface. 5721 @Deprecated 5722 public void onChildViewAdded(View parent, View child) {} 5723 5724 /** 5725 * @deprecated WebView no longer needs to implement 5726 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5727 */ 5728 // Cannot add @hide as this can always be accessed via the interface. 5729 @Deprecated 5730 public void onChildViewRemoved(View p, View child) {} 5731 5732 /** 5733 * @deprecated WebView should not have implemented 5734 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5735 */ 5736 // Cannot add @hide as this can always be accessed via the interface. 5737 @Deprecated 5738 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5739 } 5740 5741 void setActive(boolean active) { 5742 if (active) { 5743 if (hasFocus()) { 5744 // If our window regained focus, and we have focus, then begin 5745 // drawing the cursor ring 5746 mDrawCursorRing = !inEditingMode(); 5747 setFocusControllerActive(true); 5748 } else { 5749 mDrawCursorRing = false; 5750 if (!inEditingMode()) { 5751 // If our window gained focus, but we do not have it, do not 5752 // draw the cursor ring. 5753 setFocusControllerActive(false); 5754 } 5755 // We do not call recordButtons here because we assume 5756 // that when we lost focus, or window focus, it got called with 5757 // false for the first parameter 5758 } 5759 } else { 5760 if (!mZoomManager.isZoomPickerVisible()) { 5761 /* 5762 * The external zoom controls come in their own window, so our 5763 * window loses focus. Our policy is to not draw the cursor ring 5764 * if our window is not focused, but this is an exception since 5765 * the user can still navigate the web page with the zoom 5766 * controls showing. 5767 */ 5768 mDrawCursorRing = false; 5769 } 5770 mKeysPressed.clear(); 5771 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5772 mTouchMode = TOUCH_DONE_MODE; 5773 setFocusControllerActive(false); 5774 } 5775 invalidate(); 5776 } 5777 5778 // To avoid drawing the cursor ring, and remove the TextView when our window 5779 // loses focus. 5780 @Override 5781 public void onWindowFocusChanged(boolean hasWindowFocus) { 5782 setActive(hasWindowFocus); 5783 if (hasWindowFocus) { 5784 JWebCoreJavaBridge.setActiveWebView(this); 5785 if (mPictureUpdatePausedForFocusChange) { 5786 WebViewCore.resumeUpdatePicture(mWebViewCore); 5787 mPictureUpdatePausedForFocusChange = false; 5788 } 5789 } else { 5790 JWebCoreJavaBridge.removeActiveWebView(this); 5791 final WebSettings settings = getSettings(); 5792 if (settings != null && settings.enableSmoothTransition() && 5793 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5794 WebViewCore.pauseUpdatePicture(mWebViewCore); 5795 mPictureUpdatePausedForFocusChange = true; 5796 } 5797 } 5798 super.onWindowFocusChanged(hasWindowFocus); 5799 } 5800 5801 /* 5802 * Pass a message to WebCore Thread, telling the WebCore::Page's 5803 * FocusController to be "inactive" so that it will 5804 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5805 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5806 */ 5807 /* package */ void setFocusControllerActive(boolean active) { 5808 if (mWebViewCore == null) return; 5809 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5810 // Need to send this message after the document regains focus. 5811 if (active && mListBoxMessage != null) { 5812 mWebViewCore.sendMessage(mListBoxMessage); 5813 mListBoxMessage = null; 5814 } 5815 } 5816 5817 @Override 5818 protected void onFocusChanged(boolean focused, int direction, 5819 Rect previouslyFocusedRect) { 5820 if (DebugFlags.WEB_VIEW) { 5821 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5822 } 5823 if (focused) { 5824 // When we regain focus, if we have window focus, resume drawing 5825 // the cursor ring 5826 if (hasWindowFocus()) { 5827 mDrawCursorRing = !inEditingMode(); 5828 setFocusControllerActive(true); 5829 //} else { 5830 // The WebView has gained focus while we do not have 5831 // windowfocus. When our window lost focus, we should have 5832 // called recordButtons(false...) 5833 } 5834 } else { 5835 // When we lost focus, unless focus went to the TextView (which is 5836 // true if we are in editing mode), stop drawing the cursor ring. 5837 mDrawCursorRing = false; 5838 if (!inEditingMode()) { 5839 setFocusControllerActive(false); 5840 } 5841 mKeysPressed.clear(); 5842 } 5843 5844 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5845 } 5846 5847 void setGLRectViewport() { 5848 // Use the getGlobalVisibleRect() to get the intersection among the parents 5849 // visible == false means we're clipped - send a null rect down to indicate that 5850 // we should not draw 5851 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5852 if (visible) { 5853 // Then need to invert the Y axis, just for GL 5854 View rootView = getRootView(); 5855 int rootViewHeight = rootView.getHeight(); 5856 mViewRectViewport.set(mGLRectViewport); 5857 int savedWebViewBottom = mGLRectViewport.bottom; 5858 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5859 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5860 mGLViewportEmpty = false; 5861 } else { 5862 mGLViewportEmpty = true; 5863 } 5864 calcOurContentVisibleRectF(mVisibleContentRect); 5865 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5866 mGLViewportEmpty ? null : mViewRectViewport, 5867 mVisibleContentRect); 5868 } 5869 5870 /** 5871 * @hide 5872 */ 5873 @Override 5874 protected boolean setFrame(int left, int top, int right, int bottom) { 5875 boolean changed = super.setFrame(left, top, right, bottom); 5876 if (!changed && mHeightCanMeasure) { 5877 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5878 // in WebViewCore after we get the first layout. We do call 5879 // requestLayout() when we get contentSizeChanged(). But the View 5880 // system won't call onSizeChanged if the dimension is not changed. 5881 // In this case, we need to call sendViewSizeZoom() explicitly to 5882 // notify the WebKit about the new dimensions. 5883 sendViewSizeZoom(false); 5884 } 5885 setGLRectViewport(); 5886 return changed; 5887 } 5888 5889 @Override 5890 protected void onSizeChanged(int w, int h, int ow, int oh) { 5891 super.onSizeChanged(w, h, ow, oh); 5892 5893 // adjust the max viewport width depending on the view dimensions. This 5894 // is to ensure the scaling is not going insane. So do not shrink it if 5895 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5896 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5897 if (newMaxViewportWidth > sMaxViewportWidth) { 5898 sMaxViewportWidth = newMaxViewportWidth; 5899 } 5900 5901 mZoomManager.onSizeChanged(w, h, ow, oh); 5902 5903 if (mLoadedPicture != null && mDelaySetPicture == null) { 5904 // Size changes normally result in a new picture 5905 // Re-set the loaded picture to simulate that 5906 // However, do not update the base layer as that hasn't changed 5907 setNewPicture(mLoadedPicture, false); 5908 } 5909 } 5910 5911 @Override 5912 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5913 super.onScrollChanged(l, t, oldl, oldt); 5914 if (!mInOverScrollMode) { 5915 sendOurVisibleRect(); 5916 // update WebKit if visible title bar height changed. The logic is same 5917 // as getVisibleTitleHeightImpl. 5918 int titleHeight = getTitleHeight(); 5919 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5920 sendViewSizeZoom(false); 5921 } 5922 } 5923 } 5924 5925 @Override 5926 public boolean dispatchKeyEvent(KeyEvent event) { 5927 switch (event.getAction()) { 5928 case KeyEvent.ACTION_DOWN: 5929 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5930 break; 5931 case KeyEvent.ACTION_MULTIPLE: 5932 // Always accept the action. 5933 break; 5934 case KeyEvent.ACTION_UP: 5935 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5936 if (location == -1) { 5937 // We did not receive the key down for this key, so do not 5938 // handle the key up. 5939 return false; 5940 } else { 5941 // We did receive the key down. Handle the key up, and 5942 // remove it from our pressed keys. 5943 mKeysPressed.remove(location); 5944 } 5945 break; 5946 default: 5947 // Accept the action. This should not happen, unless a new 5948 // action is added to KeyEvent. 5949 break; 5950 } 5951 if (inEditingMode() && mWebTextView.isFocused()) { 5952 // Ensure that the WebTextView gets the event, even if it does 5953 // not currently have a bounds. 5954 return mWebTextView.dispatchKeyEvent(event); 5955 } else { 5956 return super.dispatchKeyEvent(event); 5957 } 5958 } 5959 5960 /* 5961 * Here is the snap align logic: 5962 * 1. If it starts nearly horizontally or vertically, snap align; 5963 * 2. If there is a dramitic direction change, let it go; 5964 * 5965 * Adjustable parameters. Angle is the radians on a unit circle, limited 5966 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5967 */ 5968 private static final float HSLOPE_TO_START_SNAP = .25f; 5969 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5970 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5971 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5972 /* 5973 * These values are used to influence the average angle when entering 5974 * snap mode. If is is the first movement entering snap, we set the average 5975 * to the appropriate ideal. If the user is entering into snap after the 5976 * first movement, then we average the average angle with these values. 5977 */ 5978 private static final float ANGLE_VERT = 2f; 5979 private static final float ANGLE_HORIZ = 0f; 5980 /* 5981 * The modified moving average weight. 5982 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5983 */ 5984 private static final float MMA_WEIGHT_N = 5; 5985 5986 private boolean hitFocusedPlugin(int contentX, int contentY) { 5987 if (DebugFlags.WEB_VIEW) { 5988 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5989 Rect r = nativeFocusNodeBounds(); 5990 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5991 + ", " + r.right + ", " + r.bottom + ")"); 5992 } 5993 return nativeFocusIsPlugin() 5994 && nativeFocusNodeBounds().contains(contentX, contentY); 5995 } 5996 5997 private boolean shouldForwardTouchEvent() { 5998 if (mFullScreenHolder != null) return true; 5999 if (mBlockWebkitViewMessages) return false; 6000 return mForwardTouchEvents 6001 && !mSelectingText 6002 && mPreventDefault != PREVENT_DEFAULT_IGNORE 6003 && mPreventDefault != PREVENT_DEFAULT_NO; 6004 } 6005 6006 private boolean inFullScreenMode() { 6007 return mFullScreenHolder != null; 6008 } 6009 6010 private void dismissFullScreenMode() { 6011 if (inFullScreenMode()) { 6012 mFullScreenHolder.hide(); 6013 mFullScreenHolder = null; 6014 invalidate(); 6015 } 6016 } 6017 6018 void onPinchToZoomAnimationStart() { 6019 // cancel the single touch handling 6020 cancelTouch(); 6021 onZoomAnimationStart(); 6022 } 6023 6024 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 6025 onZoomAnimationEnd(); 6026 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 6027 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 6028 // as it may trigger the unwanted fling. 6029 mTouchMode = TOUCH_PINCH_DRAG; 6030 mConfirmMove = true; 6031 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 6032 } 6033 6034 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 6035 // layer is found. 6036 private void startScrollingLayer(float x, float y) { 6037 int contentX = viewToContentX((int) x + mScrollX); 6038 int contentY = viewToContentY((int) y + mScrollY); 6039 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 6040 mScrollingLayerRect, mScrollingLayerBounds); 6041 if (mCurrentScrollingLayerId != 0) { 6042 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6043 } 6044 } 6045 6046 // 1/(density * density) used to compute the distance between points. 6047 // Computed in init(). 6048 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 6049 6050 // The distance between two points reported in onTouchEvent scaled by the 6051 // density of the screen. 6052 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 6053 6054 @Override 6055 public boolean onHoverEvent(MotionEvent event) { 6056 if (mNativeClass == 0) { 6057 return false; 6058 } 6059 WebViewCore.CursorData data = cursorDataNoPosition(); 6060 data.mX = viewToContentX((int) event.getX() + mScrollX); 6061 data.mY = viewToContentY((int) event.getY() + mScrollY); 6062 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6063 return true; 6064 } 6065 6066 @Override 6067 public boolean onTouchEvent(MotionEvent ev) { 6068 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6069 return false; 6070 } 6071 6072 if (DebugFlags.WEB_VIEW) { 6073 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6074 + " mTouchMode=" + mTouchMode 6075 + " numPointers=" + ev.getPointerCount()); 6076 } 6077 6078 // If WebKit wasn't interested in this multitouch gesture, enqueue 6079 // the event for handling directly rather than making the round trip 6080 // to WebKit and back. 6081 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6082 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6083 } else { 6084 mTouchEventQueue.enqueueTouchEvent(ev); 6085 } 6086 6087 // Since all events are handled asynchronously, we always want the gesture stream. 6088 return true; 6089 } 6090 6091 private float calculateDragAngle(int dx, int dy) { 6092 dx = Math.abs(dx); 6093 dy = Math.abs(dy); 6094 return (float) Math.atan2(dy, dx); 6095 } 6096 6097 /* 6098 * Common code for single touch and multi-touch. 6099 * (x, y) denotes current focus point, which is the touch point for single touch 6100 * and the middle point for multi-touch. 6101 */ 6102 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6103 long eventTime = ev.getEventTime(); 6104 6105 // Due to the touch screen edge effect, a touch closer to the edge 6106 // always snapped to the edge. As getViewWidth() can be different from 6107 // getWidth() due to the scrollbar, adjusting the point to match 6108 // getViewWidth(). Same applied to the height. 6109 x = Math.min(x, getViewWidth() - 1); 6110 y = Math.min(y, getViewHeightWithTitle() - 1); 6111 6112 int deltaX = mLastTouchX - x; 6113 int deltaY = mLastTouchY - y; 6114 int contentX = viewToContentX(x + mScrollX); 6115 int contentY = viewToContentY(y + mScrollY); 6116 6117 switch (action) { 6118 case MotionEvent.ACTION_DOWN: { 6119 mPreventDefault = PREVENT_DEFAULT_NO; 6120 mConfirmMove = false; 6121 mInitialHitTestResult = null; 6122 if (!mScroller.isFinished()) { 6123 // stop the current scroll animation, but if this is 6124 // the start of a fling, allow it to add to the current 6125 // fling's velocity 6126 mScroller.abortAnimation(); 6127 mTouchMode = TOUCH_DRAG_START_MODE; 6128 mConfirmMove = true; 6129 nativeSetIsScrolling(false); 6130 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6131 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6132 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6133 removeTouchHighlight(); 6134 } 6135 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6136 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6137 } else { 6138 // commit the short press action for the previous tap 6139 doShortPress(); 6140 mTouchMode = TOUCH_INIT_MODE; 6141 mDeferTouchProcess = !mBlockWebkitViewMessages 6142 && (!inFullScreenMode() && mForwardTouchEvents) 6143 ? hitFocusedPlugin(contentX, contentY) 6144 : false; 6145 } 6146 } else { // the normal case 6147 mTouchMode = TOUCH_INIT_MODE; 6148 mDeferTouchProcess = !mBlockWebkitViewMessages 6149 && (!inFullScreenMode() && mForwardTouchEvents) 6150 ? hitFocusedPlugin(contentX, contentY) 6151 : false; 6152 if (!mBlockWebkitViewMessages) { 6153 mWebViewCore.sendMessage( 6154 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6155 } 6156 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6157 TouchHighlightData data = new TouchHighlightData(); 6158 data.mX = contentX; 6159 data.mY = contentY; 6160 data.mNativeLayerRect = new Rect(); 6161 data.mNativeLayer = nativeScrollableLayer( 6162 contentX, contentY, data.mNativeLayerRect, null); 6163 data.mSlop = viewToContentDimension(mNavSlop); 6164 mTouchHighlightRegion.setEmpty(); 6165 if (!mBlockWebkitViewMessages) { 6166 mTouchHighlightRequested = System.currentTimeMillis(); 6167 mWebViewCore.sendMessageAtFrontOfQueue( 6168 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data); 6169 } 6170 if (DEBUG_TOUCH_HIGHLIGHT) { 6171 if (getSettings().getNavDump()) { 6172 mTouchHighlightX = (int) x + mScrollX; 6173 mTouchHighlightY = (int) y + mScrollY; 6174 mPrivateHandler.postDelayed(new Runnable() { 6175 public void run() { 6176 mTouchHighlightX = mTouchHighlightY = 0; 6177 invalidate(); 6178 } 6179 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6180 } 6181 } 6182 } 6183 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6184 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6185 (eventTime - mLastTouchUpTime), eventTime); 6186 } 6187 if (mSelectingText) { 6188 mDrawSelectionPointer = false; 6189 mSelectionStarted = nativeStartSelection(contentX, contentY); 6190 if (DebugFlags.WEB_VIEW) { 6191 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6192 } 6193 invalidate(); 6194 } 6195 } 6196 // Trigger the link 6197 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6198 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6199 mPrivateHandler.sendEmptyMessageDelayed( 6200 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6201 mPrivateHandler.sendEmptyMessageDelayed( 6202 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6203 if (inFullScreenMode() || mDeferTouchProcess) { 6204 mPreventDefault = PREVENT_DEFAULT_YES; 6205 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6206 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6207 } else { 6208 mPreventDefault = PREVENT_DEFAULT_NO; 6209 } 6210 // pass the touch events from UI thread to WebCore thread 6211 if (shouldForwardTouchEvent()) { 6212 TouchEventData ted = new TouchEventData(); 6213 ted.mAction = action; 6214 ted.mIds = new int[1]; 6215 ted.mIds[0] = ev.getPointerId(0); 6216 ted.mPoints = new Point[1]; 6217 ted.mPoints[0] = new Point(contentX, contentY); 6218 ted.mPointsInView = new Point[1]; 6219 ted.mPointsInView[0] = new Point(x, y); 6220 ted.mMetaState = ev.getMetaState(); 6221 ted.mReprocess = mDeferTouchProcess; 6222 ted.mNativeLayer = nativeScrollableLayer( 6223 contentX, contentY, ted.mNativeLayerRect, null); 6224 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6225 mTouchEventQueue.preQueueTouchEventData(ted); 6226 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6227 if (mDeferTouchProcess) { 6228 // still needs to set them for compute deltaX/Y 6229 mLastTouchX = x; 6230 mLastTouchY = y; 6231 break; 6232 } 6233 if (!inFullScreenMode()) { 6234 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6235 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6236 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6237 action, 0), TAP_TIMEOUT); 6238 } 6239 } 6240 } 6241 startTouch(x, y, eventTime); 6242 break; 6243 } 6244 case MotionEvent.ACTION_MOVE: { 6245 boolean firstMove = false; 6246 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6247 >= mTouchSlopSquare) { 6248 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6249 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6250 mConfirmMove = true; 6251 firstMove = true; 6252 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6253 mTouchMode = TOUCH_INIT_MODE; 6254 } 6255 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6256 removeTouchHighlight(); 6257 } 6258 } 6259 // pass the touch events from UI thread to WebCore thread 6260 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6261 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6262 TouchEventData ted = new TouchEventData(); 6263 ted.mAction = action; 6264 ted.mIds = new int[1]; 6265 ted.mIds[0] = ev.getPointerId(0); 6266 ted.mPoints = new Point[1]; 6267 ted.mPoints[0] = new Point(contentX, contentY); 6268 ted.mPointsInView = new Point[1]; 6269 ted.mPointsInView[0] = new Point(x, y); 6270 ted.mMetaState = ev.getMetaState(); 6271 ted.mReprocess = mDeferTouchProcess; 6272 ted.mNativeLayer = mCurrentScrollingLayerId; 6273 ted.mNativeLayerRect.set(mScrollingLayerRect); 6274 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6275 mTouchEventQueue.preQueueTouchEventData(ted); 6276 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6277 mLastSentTouchTime = eventTime; 6278 if (mDeferTouchProcess) { 6279 break; 6280 } 6281 if (firstMove && !inFullScreenMode()) { 6282 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6283 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6284 action, 0), TAP_TIMEOUT); 6285 } 6286 } 6287 if (mTouchMode == TOUCH_DONE_MODE 6288 || mPreventDefault == PREVENT_DEFAULT_YES) { 6289 // no dragging during scroll zoom animation, or when prevent 6290 // default is yes 6291 break; 6292 } 6293 if (mVelocityTracker == null) { 6294 Log.e(LOGTAG, "Got null mVelocityTracker when " 6295 + "mPreventDefault = " + mPreventDefault 6296 + " mDeferTouchProcess = " + mDeferTouchProcess 6297 + " mTouchMode = " + mTouchMode); 6298 } else { 6299 mVelocityTracker.addMovement(ev); 6300 } 6301 if (mSelectingText && mSelectionStarted) { 6302 if (DebugFlags.WEB_VIEW) { 6303 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6304 } 6305 ViewParent parent = getParent(); 6306 if (parent != null) { 6307 parent.requestDisallowInterceptTouchEvent(true); 6308 } 6309 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6310 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6311 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6312 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6313 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6314 && !mSentAutoScrollMessage) { 6315 mSentAutoScrollMessage = true; 6316 mPrivateHandler.sendEmptyMessageDelayed( 6317 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6318 } 6319 if (deltaX != 0 || deltaY != 0) { 6320 nativeExtendSelection(contentX, contentY); 6321 invalidate(); 6322 } 6323 break; 6324 } 6325 6326 if (mTouchMode != TOUCH_DRAG_MODE && 6327 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6328 6329 if (!mConfirmMove) { 6330 break; 6331 } 6332 6333 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6334 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6335 // track mLastTouchTime as we may need to do fling at 6336 // ACTION_UP 6337 mLastTouchTime = eventTime; 6338 break; 6339 } 6340 6341 // Only lock dragging to one axis if we don't have a scale in progress. 6342 // Scaling implies free-roaming movement. Note this is only ever a question 6343 // if mZoomManager.supportsPanDuringZoom() is true. 6344 final ScaleGestureDetector detector = 6345 mZoomManager.getMultiTouchGestureDetector(); 6346 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6347 if (detector == null || !detector.isInProgress()) { 6348 // if it starts nearly horizontal or vertical, enforce it 6349 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6350 mSnapScrollMode = SNAP_X; 6351 mSnapPositive = deltaX > 0; 6352 mAverageAngle = ANGLE_HORIZ; 6353 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6354 mSnapScrollMode = SNAP_Y; 6355 mSnapPositive = deltaY > 0; 6356 mAverageAngle = ANGLE_VERT; 6357 } 6358 } 6359 6360 mTouchMode = TOUCH_DRAG_MODE; 6361 mLastTouchX = x; 6362 mLastTouchY = y; 6363 deltaX = 0; 6364 deltaY = 0; 6365 6366 startScrollingLayer(x, y); 6367 startDrag(); 6368 } 6369 6370 // do pan 6371 boolean done = false; 6372 boolean keepScrollBarsVisible = false; 6373 if (deltaX == 0 && deltaY == 0) { 6374 keepScrollBarsVisible = done = true; 6375 } else { 6376 mAverageAngle += 6377 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6378 / MMA_WEIGHT_N; 6379 if (mSnapScrollMode != SNAP_NONE) { 6380 if (mSnapScrollMode == SNAP_Y) { 6381 // radical change means getting out of snap mode 6382 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6383 mSnapScrollMode = SNAP_NONE; 6384 } 6385 } 6386 if (mSnapScrollMode == SNAP_X) { 6387 // radical change means getting out of snap mode 6388 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6389 mSnapScrollMode = SNAP_NONE; 6390 } 6391 } 6392 } else { 6393 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6394 mSnapScrollMode = SNAP_X; 6395 mSnapPositive = deltaX > 0; 6396 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6397 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6398 mSnapScrollMode = SNAP_Y; 6399 mSnapPositive = deltaY > 0; 6400 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6401 } 6402 } 6403 if (mSnapScrollMode != SNAP_NONE) { 6404 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6405 deltaY = 0; 6406 } else { 6407 deltaX = 0; 6408 } 6409 } 6410 mLastTouchX = x; 6411 mLastTouchY = y; 6412 6413 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6414 mHeldMotionless = MOTIONLESS_FALSE; 6415 nativeSetIsScrolling(true); 6416 } else { 6417 mHeldMotionless = MOTIONLESS_TRUE; 6418 nativeSetIsScrolling(false); 6419 keepScrollBarsVisible = true; 6420 } 6421 6422 mLastTouchTime = eventTime; 6423 } 6424 6425 doDrag(deltaX, deltaY); 6426 6427 // Turn off scrollbars when dragging a layer. 6428 if (keepScrollBarsVisible && 6429 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6430 if (mHeldMotionless != MOTIONLESS_TRUE) { 6431 mHeldMotionless = MOTIONLESS_TRUE; 6432 invalidate(); 6433 } 6434 // keep the scrollbar on the screen even there is no scroll 6435 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6436 false); 6437 // Post a message so that we'll keep them alive while we're not scrolling. 6438 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6439 .obtainMessage(AWAKEN_SCROLL_BARS), 6440 ViewConfiguration.getScrollDefaultDelay()); 6441 // return false to indicate that we can't pan out of the 6442 // view space 6443 return !done; 6444 } else { 6445 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6446 } 6447 break; 6448 } 6449 case MotionEvent.ACTION_UP: { 6450 if (!isFocused()) requestFocus(); 6451 // pass the touch events from UI thread to WebCore thread 6452 if (shouldForwardTouchEvent()) { 6453 TouchEventData ted = new TouchEventData(); 6454 ted.mIds = new int[1]; 6455 ted.mIds[0] = ev.getPointerId(0); 6456 ted.mAction = action; 6457 ted.mPoints = new Point[1]; 6458 ted.mPoints[0] = new Point(contentX, contentY); 6459 ted.mPointsInView = new Point[1]; 6460 ted.mPointsInView[0] = new Point(x, y); 6461 ted.mMetaState = ev.getMetaState(); 6462 ted.mReprocess = mDeferTouchProcess; 6463 ted.mNativeLayer = mCurrentScrollingLayerId; 6464 ted.mNativeLayerRect.set(mScrollingLayerRect); 6465 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6466 mTouchEventQueue.preQueueTouchEventData(ted); 6467 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6468 } 6469 mLastTouchUpTime = eventTime; 6470 if (mSentAutoScrollMessage) { 6471 mAutoScrollX = mAutoScrollY = 0; 6472 } 6473 switch (mTouchMode) { 6474 case TOUCH_DOUBLE_TAP_MODE: // double tap 6475 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6476 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6477 if (inFullScreenMode() || mDeferTouchProcess) { 6478 TouchEventData ted = new TouchEventData(); 6479 ted.mIds = new int[1]; 6480 ted.mIds[0] = ev.getPointerId(0); 6481 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6482 ted.mPoints = new Point[1]; 6483 ted.mPoints[0] = new Point(contentX, contentY); 6484 ted.mPointsInView = new Point[1]; 6485 ted.mPointsInView[0] = new Point(x, y); 6486 ted.mMetaState = ev.getMetaState(); 6487 ted.mReprocess = mDeferTouchProcess; 6488 ted.mNativeLayer = nativeScrollableLayer( 6489 contentX, contentY, 6490 ted.mNativeLayerRect, null); 6491 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6492 mTouchEventQueue.preQueueTouchEventData(ted); 6493 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6494 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6495 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6496 mTouchMode = TOUCH_DONE_MODE; 6497 } 6498 break; 6499 case TOUCH_INIT_MODE: // tap 6500 case TOUCH_SHORTPRESS_START_MODE: 6501 case TOUCH_SHORTPRESS_MODE: 6502 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6503 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6504 if (mConfirmMove) { 6505 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6506 " WebCore's response for touch down."); 6507 if (mPreventDefault != PREVENT_DEFAULT_YES 6508 && (computeMaxScrollX() > 0 6509 || computeMaxScrollY() > 0)) { 6510 // If the user has performed a very quick touch 6511 // sequence it is possible that we may get here 6512 // before WebCore has had a chance to process the events. 6513 // In this case, any call to preventDefault in the 6514 // JS touch handler will not have been executed yet. 6515 // Hence we will see both the UI (now) and WebCore 6516 // (when context switches) handling the event, 6517 // regardless of whether the web developer actually 6518 // doeses preventDefault in their touch handler. This 6519 // is the nature of our asynchronous touch model. 6520 6521 // we will not rewrite drag code here, but we 6522 // will try fling if it applies. 6523 WebViewCore.reducePriority(); 6524 // to get better performance, pause updating the 6525 // picture 6526 WebViewCore.pauseUpdatePicture(mWebViewCore); 6527 // fall through to TOUCH_DRAG_MODE 6528 } else { 6529 // WebKit may consume the touch event and modify 6530 // DOM. drawContentPicture() will be called with 6531 // animateSroll as true for better performance. 6532 // Force redraw in high-quality. 6533 invalidate(); 6534 break; 6535 } 6536 } else { 6537 if (mSelectingText) { 6538 // tapping on selection or controls does nothing 6539 if (!nativeHitSelection(contentX, contentY)) { 6540 selectionDone(); 6541 } 6542 break; 6543 } 6544 // only trigger double tap if the WebView is 6545 // scalable 6546 if (mTouchMode == TOUCH_INIT_MODE 6547 && (canZoomIn() || canZoomOut())) { 6548 mPrivateHandler.sendEmptyMessageDelayed( 6549 RELEASE_SINGLE_TAP, ViewConfiguration 6550 .getDoubleTapTimeout()); 6551 } else { 6552 doShortPress(); 6553 } 6554 break; 6555 } 6556 case TOUCH_DRAG_MODE: 6557 case TOUCH_DRAG_LAYER_MODE: 6558 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6559 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6560 // if the user waits a while w/o moving before the 6561 // up, we don't want to do a fling 6562 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6563 if (mVelocityTracker == null) { 6564 Log.e(LOGTAG, "Got null mVelocityTracker when " 6565 + "mPreventDefault = " 6566 + mPreventDefault 6567 + " mDeferTouchProcess = " 6568 + mDeferTouchProcess); 6569 } else { 6570 mVelocityTracker.addMovement(ev); 6571 } 6572 // set to MOTIONLESS_IGNORE so that it won't keep 6573 // removing and sending message in 6574 // drawCoreAndCursorRing() 6575 mHeldMotionless = MOTIONLESS_IGNORE; 6576 doFling(); 6577 break; 6578 } else { 6579 if (mScroller.springBack(mScrollX, mScrollY, 0, 6580 computeMaxScrollX(), 0, 6581 computeMaxScrollY())) { 6582 invalidate(); 6583 } 6584 } 6585 // redraw in high-quality, as we're done dragging 6586 mHeldMotionless = MOTIONLESS_TRUE; 6587 invalidate(); 6588 // fall through 6589 case TOUCH_DRAG_START_MODE: 6590 // TOUCH_DRAG_START_MODE should not happen for the real 6591 // device as we almost certain will get a MOVE. But this 6592 // is possible on emulator. 6593 mLastVelocity = 0; 6594 WebViewCore.resumePriority(); 6595 if (!mSelectingText) { 6596 WebViewCore.resumeUpdatePicture(mWebViewCore); 6597 } 6598 break; 6599 } 6600 stopTouch(); 6601 break; 6602 } 6603 case MotionEvent.ACTION_CANCEL: { 6604 if (mTouchMode == TOUCH_DRAG_MODE) { 6605 mScroller.springBack(mScrollX, mScrollY, 0, 6606 computeMaxScrollX(), 0, computeMaxScrollY()); 6607 invalidate(); 6608 } 6609 cancelWebCoreTouchEvent(contentX, contentY, false); 6610 cancelTouch(); 6611 break; 6612 } 6613 } 6614 return true; 6615 } 6616 6617 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6618 TouchEventData ted = new TouchEventData(); 6619 ted.mAction = ev.getActionMasked(); 6620 final int count = ev.getPointerCount(); 6621 ted.mIds = new int[count]; 6622 ted.mPoints = new Point[count]; 6623 ted.mPointsInView = new Point[count]; 6624 for (int c = 0; c < count; c++) { 6625 ted.mIds[c] = ev.getPointerId(c); 6626 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6627 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6628 ted.mPoints[c] = new Point(x, y); 6629 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6630 } 6631 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6632 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6633 ted.mActionIndex = ev.getActionIndex(); 6634 } 6635 ted.mMetaState = ev.getMetaState(); 6636 ted.mReprocess = true; 6637 ted.mMotionEvent = MotionEvent.obtain(ev); 6638 ted.mSequence = sequence; 6639 mTouchEventQueue.preQueueTouchEventData(ted); 6640 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6641 cancelLongPress(); 6642 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6643 } 6644 6645 void handleMultiTouchInWebView(MotionEvent ev) { 6646 if (DebugFlags.WEB_VIEW) { 6647 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6648 + " mTouchMode=" + mTouchMode 6649 + " numPointers=" + ev.getPointerCount() 6650 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6651 } 6652 6653 final ScaleGestureDetector detector = 6654 mZoomManager.getMultiTouchGestureDetector(); 6655 6656 // A few apps use WebView but don't instantiate gesture detector. 6657 // We don't need to support multi touch for them. 6658 if (detector == null) return; 6659 6660 float x = ev.getX(); 6661 float y = ev.getY(); 6662 6663 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6664 detector.onTouchEvent(ev); 6665 6666 if (detector.isInProgress()) { 6667 if (DebugFlags.WEB_VIEW) { 6668 Log.v(LOGTAG, "detector is in progress"); 6669 } 6670 mLastTouchTime = ev.getEventTime(); 6671 x = detector.getFocusX(); 6672 y = detector.getFocusY(); 6673 6674 cancelLongPress(); 6675 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6676 if (!mZoomManager.supportsPanDuringZoom()) { 6677 return; 6678 } 6679 mTouchMode = TOUCH_DRAG_MODE; 6680 if (mVelocityTracker == null) { 6681 mVelocityTracker = VelocityTracker.obtain(); 6682 } 6683 } 6684 } 6685 6686 int action = ev.getActionMasked(); 6687 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6688 cancelTouch(); 6689 action = MotionEvent.ACTION_DOWN; 6690 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6691 // set mLastTouchX/Y to the remaining points for multi-touch. 6692 mLastTouchX = Math.round(x); 6693 mLastTouchY = Math.round(y); 6694 } else if (action == MotionEvent.ACTION_MOVE) { 6695 // negative x or y indicate it is on the edge, skip it. 6696 if (x < 0 || y < 0) { 6697 return; 6698 } 6699 } 6700 6701 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6702 } 6703 6704 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6705 if (shouldForwardTouchEvent()) { 6706 if (removeEvents) { 6707 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6708 } 6709 TouchEventData ted = new TouchEventData(); 6710 ted.mIds = new int[1]; 6711 ted.mIds[0] = 0; 6712 ted.mPoints = new Point[1]; 6713 ted.mPoints[0] = new Point(x, y); 6714 ted.mPointsInView = new Point[1]; 6715 int viewX = contentToViewX(x) - mScrollX; 6716 int viewY = contentToViewY(y) - mScrollY; 6717 ted.mPointsInView[0] = new Point(viewX, viewY); 6718 ted.mAction = MotionEvent.ACTION_CANCEL; 6719 ted.mNativeLayer = nativeScrollableLayer( 6720 x, y, ted.mNativeLayerRect, null); 6721 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6722 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6723 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6724 6725 if (removeEvents) { 6726 // Mark this after sending the message above; we should 6727 // be willing to ignore the cancel event that we just sent. 6728 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6729 } 6730 } 6731 } 6732 6733 private void startTouch(float x, float y, long eventTime) { 6734 // Remember where the motion event started 6735 mStartTouchX = mLastTouchX = Math.round(x); 6736 mStartTouchY = mLastTouchY = Math.round(y); 6737 mLastTouchTime = eventTime; 6738 mVelocityTracker = VelocityTracker.obtain(); 6739 mSnapScrollMode = SNAP_NONE; 6740 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6741 ViewConfiguration.getTapTimeout()); 6742 } 6743 6744 private void startDrag() { 6745 WebViewCore.reducePriority(); 6746 // to get better performance, pause updating the picture 6747 WebViewCore.pauseUpdatePicture(mWebViewCore); 6748 nativeSetIsScrolling(true); 6749 6750 if (!mDragFromTextInput) { 6751 nativeHideCursor(); 6752 } 6753 6754 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6755 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6756 mZoomManager.invokeZoomPicker(); 6757 } 6758 } 6759 6760 private void doDrag(int deltaX, int deltaY) { 6761 if ((deltaX | deltaY) != 0) { 6762 int oldX = mScrollX; 6763 int oldY = mScrollY; 6764 int rangeX = computeMaxScrollX(); 6765 int rangeY = computeMaxScrollY(); 6766 int overscrollDistance = mOverscrollDistance; 6767 6768 // Check for the original scrolling layer in case we change 6769 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6770 // reached the edge of a layer but mScrollingLayer will be non-zero 6771 // if we initiated the drag on a layer. 6772 if (mCurrentScrollingLayerId != 0) { 6773 final int contentX = viewToContentDimension(deltaX); 6774 final int contentY = viewToContentDimension(deltaY); 6775 6776 // Check the scrolling bounds to see if we will actually do any 6777 // scrolling. The rectangle is in document coordinates. 6778 final int maxX = mScrollingLayerRect.right; 6779 final int maxY = mScrollingLayerRect.bottom; 6780 final int resultX = Math.max(0, 6781 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6782 final int resultY = Math.max(0, 6783 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6784 6785 if (resultX != mScrollingLayerRect.left || 6786 resultY != mScrollingLayerRect.top) { 6787 // In case we switched to dragging the page. 6788 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6789 deltaX = contentX; 6790 deltaY = contentY; 6791 oldX = mScrollingLayerRect.left; 6792 oldY = mScrollingLayerRect.top; 6793 rangeX = maxX; 6794 rangeY = maxY; 6795 } else { 6796 // Scroll the main page if we are not going to scroll the 6797 // layer. This does not reset mScrollingLayer in case the 6798 // user changes directions and the layer can scroll the 6799 // other way. 6800 mTouchMode = TOUCH_DRAG_MODE; 6801 } 6802 } 6803 6804 if (mOverScrollGlow != null) { 6805 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6806 } 6807 6808 overScrollBy(deltaX, deltaY, oldX, oldY, 6809 rangeX, rangeY, 6810 mOverscrollDistance, mOverscrollDistance, true); 6811 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6812 invalidate(); 6813 } 6814 } 6815 mZoomManager.keepZoomPickerVisible(); 6816 } 6817 6818 private void stopTouch() { 6819 if (mScroller.isFinished() && !mSelectingText 6820 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6821 WebViewCore.resumePriority(); 6822 WebViewCore.resumeUpdatePicture(mWebViewCore); 6823 nativeSetIsScrolling(false); 6824 } 6825 6826 // we also use mVelocityTracker == null to tell us that we are 6827 // not "moving around", so we can take the slower/prettier 6828 // mode in the drawing code 6829 if (mVelocityTracker != null) { 6830 mVelocityTracker.recycle(); 6831 mVelocityTracker = null; 6832 } 6833 6834 // Release any pulled glows 6835 if (mOverScrollGlow != null) { 6836 mOverScrollGlow.releaseAll(); 6837 } 6838 } 6839 6840 private void cancelTouch() { 6841 // we also use mVelocityTracker == null to tell us that we are 6842 // not "moving around", so we can take the slower/prettier 6843 // mode in the drawing code 6844 if (mVelocityTracker != null) { 6845 mVelocityTracker.recycle(); 6846 mVelocityTracker = null; 6847 } 6848 6849 if ((mTouchMode == TOUCH_DRAG_MODE 6850 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6851 WebViewCore.resumePriority(); 6852 WebViewCore.resumeUpdatePicture(mWebViewCore); 6853 nativeSetIsScrolling(false); 6854 } 6855 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6856 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6857 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6858 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6859 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6860 removeTouchHighlight(); 6861 } 6862 mHeldMotionless = MOTIONLESS_TRUE; 6863 mTouchMode = TOUCH_DONE_MODE; 6864 nativeHideCursor(); 6865 } 6866 6867 @Override 6868 public boolean onGenericMotionEvent(MotionEvent event) { 6869 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6870 switch (event.getAction()) { 6871 case MotionEvent.ACTION_SCROLL: { 6872 final float vscroll; 6873 final float hscroll; 6874 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6875 vscroll = 0; 6876 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6877 } else { 6878 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6879 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6880 } 6881 if (hscroll != 0 || vscroll != 0) { 6882 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6883 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6884 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6885 return true; 6886 } 6887 } 6888 } 6889 } 6890 } 6891 return super.onGenericMotionEvent(event); 6892 } 6893 6894 private long mTrackballFirstTime = 0; 6895 private long mTrackballLastTime = 0; 6896 private float mTrackballRemainsX = 0.0f; 6897 private float mTrackballRemainsY = 0.0f; 6898 private int mTrackballXMove = 0; 6899 private int mTrackballYMove = 0; 6900 private boolean mSelectingText = false; 6901 private boolean mSelectionStarted = false; 6902 private boolean mExtendSelection = false; 6903 private boolean mDrawSelectionPointer = false; 6904 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6905 private static final int TRACKBALL_TIMEOUT = 200; 6906 private static final int TRACKBALL_WAIT = 100; 6907 private static final int TRACKBALL_SCALE = 400; 6908 private static final int TRACKBALL_SCROLL_COUNT = 5; 6909 private static final int TRACKBALL_MOVE_COUNT = 10; 6910 private static final int TRACKBALL_MULTIPLIER = 3; 6911 private static final int SELECT_CURSOR_OFFSET = 16; 6912 private static final int SELECT_SCROLL = 5; 6913 private int mSelectX = 0; 6914 private int mSelectY = 0; 6915 private boolean mFocusSizeChanged = false; 6916 private boolean mTrackballDown = false; 6917 private long mTrackballUpTime = 0; 6918 private long mLastCursorTime = 0; 6919 private Rect mLastCursorBounds; 6920 6921 // Set by default; BrowserActivity clears to interpret trackball data 6922 // directly for movement. Currently, the framework only passes 6923 // arrow key events, not trackball events, from one child to the next 6924 private boolean mMapTrackballToArrowKeys = true; 6925 6926 private DrawData mDelaySetPicture; 6927 private DrawData mLoadedPicture; 6928 6929 public void setMapTrackballToArrowKeys(boolean setMap) { 6930 checkThread(); 6931 mMapTrackballToArrowKeys = setMap; 6932 } 6933 6934 void resetTrackballTime() { 6935 mTrackballLastTime = 0; 6936 } 6937 6938 @Override 6939 public boolean onTrackballEvent(MotionEvent ev) { 6940 long time = ev.getEventTime(); 6941 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6942 if (ev.getY() > 0) pageDown(true); 6943 if (ev.getY() < 0) pageUp(true); 6944 return true; 6945 } 6946 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6947 if (mSelectingText) { 6948 return true; // discard press if copy in progress 6949 } 6950 mTrackballDown = true; 6951 if (mNativeClass == 0) { 6952 return false; 6953 } 6954 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6955 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6956 nativeSelectBestAt(mLastCursorBounds); 6957 } 6958 if (DebugFlags.WEB_VIEW) { 6959 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6960 + " time=" + time 6961 + " mLastCursorTime=" + mLastCursorTime); 6962 } 6963 if (isInTouchMode()) requestFocusFromTouch(); 6964 return false; // let common code in onKeyDown at it 6965 } 6966 if (ev.getAction() == MotionEvent.ACTION_UP) { 6967 // LONG_PRESS_CENTER is set in common onKeyDown 6968 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6969 mTrackballDown = false; 6970 mTrackballUpTime = time; 6971 if (mSelectingText) { 6972 if (mExtendSelection) { 6973 copySelection(); 6974 selectionDone(); 6975 } else { 6976 mExtendSelection = true; 6977 nativeSetExtendSelection(); 6978 invalidate(); // draw the i-beam instead of the arrow 6979 } 6980 return true; // discard press if copy in progress 6981 } 6982 if (DebugFlags.WEB_VIEW) { 6983 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6984 + " time=" + time 6985 ); 6986 } 6987 return false; // let common code in onKeyUp at it 6988 } 6989 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6990 AccessibilityManager.getInstance(mContext).isEnabled()) { 6991 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6992 return false; 6993 } 6994 if (mTrackballDown) { 6995 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6996 return true; // discard move if trackball is down 6997 } 6998 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6999 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 7000 return true; 7001 } 7002 // TODO: alternatively we can do panning as touch does 7003 switchOutDrawHistory(); 7004 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 7005 if (DebugFlags.WEB_VIEW) { 7006 Log.v(LOGTAG, "onTrackballEvent time=" 7007 + time + " last=" + mTrackballLastTime); 7008 } 7009 mTrackballFirstTime = time; 7010 mTrackballXMove = mTrackballYMove = 0; 7011 } 7012 mTrackballLastTime = time; 7013 if (DebugFlags.WEB_VIEW) { 7014 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 7015 } 7016 mTrackballRemainsX += ev.getX(); 7017 mTrackballRemainsY += ev.getY(); 7018 doTrackball(time, ev.getMetaState()); 7019 return true; 7020 } 7021 7022 void moveSelection(float xRate, float yRate) { 7023 if (mNativeClass == 0) 7024 return; 7025 int width = getViewWidth(); 7026 int height = getViewHeight(); 7027 mSelectX += xRate; 7028 mSelectY += yRate; 7029 int maxX = width + mScrollX; 7030 int maxY = height + mScrollY; 7031 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 7032 , mSelectX)); 7033 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 7034 , mSelectY)); 7035 if (DebugFlags.WEB_VIEW) { 7036 Log.v(LOGTAG, "moveSelection" 7037 + " mSelectX=" + mSelectX 7038 + " mSelectY=" + mSelectY 7039 + " mScrollX=" + mScrollX 7040 + " mScrollY=" + mScrollY 7041 + " xRate=" + xRate 7042 + " yRate=" + yRate 7043 ); 7044 } 7045 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 7046 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 7047 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 7048 : 0; 7049 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 7050 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 7051 : 0; 7052 pinScrollBy(scrollX, scrollY, true, 0); 7053 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 7054 requestRectangleOnScreen(select); 7055 invalidate(); 7056 } 7057 7058 private int scaleTrackballX(float xRate, int width) { 7059 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 7060 int nextXMove = xMove; 7061 if (xMove > 0) { 7062 if (xMove > mTrackballXMove) { 7063 xMove -= mTrackballXMove; 7064 } 7065 } else if (xMove < mTrackballXMove) { 7066 xMove -= mTrackballXMove; 7067 } 7068 mTrackballXMove = nextXMove; 7069 return xMove; 7070 } 7071 7072 private int scaleTrackballY(float yRate, int height) { 7073 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7074 int nextYMove = yMove; 7075 if (yMove > 0) { 7076 if (yMove > mTrackballYMove) { 7077 yMove -= mTrackballYMove; 7078 } 7079 } else if (yMove < mTrackballYMove) { 7080 yMove -= mTrackballYMove; 7081 } 7082 mTrackballYMove = nextYMove; 7083 return yMove; 7084 } 7085 7086 private int keyCodeToSoundsEffect(int keyCode) { 7087 switch(keyCode) { 7088 case KeyEvent.KEYCODE_DPAD_UP: 7089 return SoundEffectConstants.NAVIGATION_UP; 7090 case KeyEvent.KEYCODE_DPAD_RIGHT: 7091 return SoundEffectConstants.NAVIGATION_RIGHT; 7092 case KeyEvent.KEYCODE_DPAD_DOWN: 7093 return SoundEffectConstants.NAVIGATION_DOWN; 7094 case KeyEvent.KEYCODE_DPAD_LEFT: 7095 return SoundEffectConstants.NAVIGATION_LEFT; 7096 } 7097 throw new IllegalArgumentException("keyCode must be one of " + 7098 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7099 "KEYCODE_DPAD_LEFT}."); 7100 } 7101 7102 private void doTrackball(long time, int metaState) { 7103 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7104 if (elapsed == 0) { 7105 elapsed = TRACKBALL_TIMEOUT; 7106 } 7107 float xRate = mTrackballRemainsX * 1000 / elapsed; 7108 float yRate = mTrackballRemainsY * 1000 / elapsed; 7109 int viewWidth = getViewWidth(); 7110 int viewHeight = getViewHeight(); 7111 if (mSelectingText) { 7112 if (!mDrawSelectionPointer) { 7113 // The last selection was made by touch, disabling drawing the 7114 // selection pointer. Allow the trackball to adjust the 7115 // position of the touch control. 7116 mSelectX = contentToViewX(nativeSelectionX()); 7117 mSelectY = contentToViewY(nativeSelectionY()); 7118 mDrawSelectionPointer = mExtendSelection = true; 7119 nativeSetExtendSelection(); 7120 } 7121 moveSelection(scaleTrackballX(xRate, viewWidth), 7122 scaleTrackballY(yRate, viewHeight)); 7123 mTrackballRemainsX = mTrackballRemainsY = 0; 7124 return; 7125 } 7126 float ax = Math.abs(xRate); 7127 float ay = Math.abs(yRate); 7128 float maxA = Math.max(ax, ay); 7129 if (DebugFlags.WEB_VIEW) { 7130 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7131 + " xRate=" + xRate 7132 + " yRate=" + yRate 7133 + " mTrackballRemainsX=" + mTrackballRemainsX 7134 + " mTrackballRemainsY=" + mTrackballRemainsY); 7135 } 7136 int width = mContentWidth - viewWidth; 7137 int height = mContentHeight - viewHeight; 7138 if (width < 0) width = 0; 7139 if (height < 0) height = 0; 7140 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7141 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7142 maxA = Math.max(ax, ay); 7143 int count = Math.max(0, (int) maxA); 7144 int oldScrollX = mScrollX; 7145 int oldScrollY = mScrollY; 7146 if (count > 0) { 7147 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7148 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7149 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7150 KeyEvent.KEYCODE_DPAD_RIGHT; 7151 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7152 if (DebugFlags.WEB_VIEW) { 7153 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7154 + " count=" + count 7155 + " mTrackballRemainsX=" + mTrackballRemainsX 7156 + " mTrackballRemainsY=" + mTrackballRemainsY); 7157 } 7158 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7159 for (int i = 0; i < count; i++) { 7160 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7161 } 7162 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7163 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7164 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7165 } 7166 mTrackballRemainsX = mTrackballRemainsY = 0; 7167 } 7168 if (count >= TRACKBALL_SCROLL_COUNT) { 7169 int xMove = scaleTrackballX(xRate, width); 7170 int yMove = scaleTrackballY(yRate, height); 7171 if (DebugFlags.WEB_VIEW) { 7172 Log.v(LOGTAG, "doTrackball pinScrollBy" 7173 + " count=" + count 7174 + " xMove=" + xMove + " yMove=" + yMove 7175 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7176 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7177 ); 7178 } 7179 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7180 xMove = 0; 7181 } 7182 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7183 yMove = 0; 7184 } 7185 if (xMove != 0 || yMove != 0) { 7186 pinScrollBy(xMove, yMove, true, 0); 7187 } 7188 } 7189 } 7190 7191 /** 7192 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7193 * @return Maximum horizontal scroll position within real content 7194 */ 7195 int computeMaxScrollX() { 7196 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7197 } 7198 7199 /** 7200 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7201 * @return Maximum vertical scroll position within real content 7202 */ 7203 int computeMaxScrollY() { 7204 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7205 - getViewHeightWithTitle(), 0); 7206 } 7207 7208 boolean updateScrollCoordinates(int x, int y) { 7209 int oldX = mScrollX; 7210 int oldY = mScrollY; 7211 mScrollX = x; 7212 mScrollY = y; 7213 if (oldX != mScrollX || oldY != mScrollY) { 7214 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7215 return true; 7216 } else { 7217 return false; 7218 } 7219 } 7220 7221 public void flingScroll(int vx, int vy) { 7222 checkThread(); 7223 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7224 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7225 invalidate(); 7226 } 7227 7228 private void doFling() { 7229 if (mVelocityTracker == null) { 7230 return; 7231 } 7232 int maxX = computeMaxScrollX(); 7233 int maxY = computeMaxScrollY(); 7234 7235 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7236 int vx = (int) mVelocityTracker.getXVelocity(); 7237 int vy = (int) mVelocityTracker.getYVelocity(); 7238 7239 int scrollX = mScrollX; 7240 int scrollY = mScrollY; 7241 int overscrollDistance = mOverscrollDistance; 7242 int overflingDistance = mOverflingDistance; 7243 7244 // Use the layer's scroll data if applicable. 7245 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7246 scrollX = mScrollingLayerRect.left; 7247 scrollY = mScrollingLayerRect.top; 7248 maxX = mScrollingLayerRect.right; 7249 maxY = mScrollingLayerRect.bottom; 7250 // No overscrolling for layers. 7251 overscrollDistance = overflingDistance = 0; 7252 } 7253 7254 if (mSnapScrollMode != SNAP_NONE) { 7255 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7256 vy = 0; 7257 } else { 7258 vx = 0; 7259 } 7260 } 7261 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7262 WebViewCore.resumePriority(); 7263 if (!mSelectingText) { 7264 WebViewCore.resumeUpdatePicture(mWebViewCore); 7265 } 7266 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7267 invalidate(); 7268 } 7269 return; 7270 } 7271 float currentVelocity = mScroller.getCurrVelocity(); 7272 float velocity = (float) Math.hypot(vx, vy); 7273 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7274 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7275 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7276 - Math.atan2(vy, vx))); 7277 final float circle = (float) (Math.PI) * 2.0f; 7278 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7279 vx += currentVelocity * mLastVelX / mLastVelocity; 7280 vy += currentVelocity * mLastVelY / mLastVelocity; 7281 velocity = (float) Math.hypot(vx, vy); 7282 if (DebugFlags.WEB_VIEW) { 7283 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7284 } 7285 } else if (DebugFlags.WEB_VIEW) { 7286 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7287 } 7288 } else if (DebugFlags.WEB_VIEW) { 7289 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7290 + " current=" + currentVelocity 7291 + " vx=" + vx + " vy=" + vy 7292 + " maxX=" + maxX + " maxY=" + maxY 7293 + " scrollX=" + scrollX + " scrollY=" + scrollY 7294 + " layer=" + mCurrentScrollingLayerId); 7295 } 7296 7297 // Allow sloppy flings without overscrolling at the edges. 7298 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7299 vx = 0; 7300 } 7301 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7302 vy = 0; 7303 } 7304 7305 if (overscrollDistance < overflingDistance) { 7306 if ((vx > 0 && scrollX == -overscrollDistance) || 7307 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7308 vx = 0; 7309 } 7310 if ((vy > 0 && scrollY == -overscrollDistance) || 7311 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7312 vy = 0; 7313 } 7314 } 7315 7316 mLastVelX = vx; 7317 mLastVelY = vy; 7318 mLastVelocity = velocity; 7319 7320 // no horizontal overscroll if the content just fits 7321 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7322 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7323 // Duration is calculated based on velocity. With range boundaries and overscroll 7324 // we may not know how long the final animation will take. (Hence the deprecation 7325 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7326 // resumes during this effect we will take a performance hit. See computeScroll; 7327 // we resume webcore there when the animation is finished. 7328 final int time = mScroller.getDuration(); 7329 7330 // Suppress scrollbars for layer scrolling. 7331 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7332 awakenScrollBars(time); 7333 } 7334 7335 invalidate(); 7336 } 7337 7338 /** 7339 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7340 * in charge of installing this view to the view hierarchy. This view will 7341 * become visible when the user starts scrolling via touch and fade away if 7342 * the user does not interact with it. 7343 * <p/> 7344 * API version 3 introduces a built-in zoom mechanism that is shown 7345 * automatically by the MapView. This is the preferred approach for 7346 * showing the zoom UI. 7347 * 7348 * @deprecated The built-in zoom mechanism is preferred, see 7349 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7350 */ 7351 @Deprecated 7352 public View getZoomControls() { 7353 checkThread(); 7354 if (!getSettings().supportZoom()) { 7355 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7356 return null; 7357 } 7358 return mZoomManager.getExternalZoomPicker(); 7359 } 7360 7361 void dismissZoomControl() { 7362 mZoomManager.dismissZoomPicker(); 7363 } 7364 7365 float getDefaultZoomScale() { 7366 return mZoomManager.getDefaultScale(); 7367 } 7368 7369 /** 7370 * Return the overview scale of the WebView 7371 * @return The overview scale. 7372 */ 7373 float getZoomOverviewScale() { 7374 return mZoomManager.getZoomOverviewScale(); 7375 } 7376 7377 /** 7378 * @return TRUE if the WebView can be zoomed in. 7379 */ 7380 public boolean canZoomIn() { 7381 checkThread(); 7382 return mZoomManager.canZoomIn(); 7383 } 7384 7385 /** 7386 * @return TRUE if the WebView can be zoomed out. 7387 */ 7388 public boolean canZoomOut() { 7389 checkThread(); 7390 return mZoomManager.canZoomOut(); 7391 } 7392 7393 /** 7394 * Perform zoom in in the webview 7395 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7396 */ 7397 public boolean zoomIn() { 7398 checkThread(); 7399 return mZoomManager.zoomIn(); 7400 } 7401 7402 /** 7403 * Perform zoom out in the webview 7404 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7405 */ 7406 public boolean zoomOut() { 7407 checkThread(); 7408 return mZoomManager.zoomOut(); 7409 } 7410 7411 /** 7412 * This selects the best clickable target at mLastTouchX and mLastTouchY 7413 * and calls showCursorTimed on the native side 7414 */ 7415 private void updateSelection() { 7416 if (mNativeClass == 0) { 7417 return; 7418 } 7419 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7420 // mLastTouchX and mLastTouchY are the point in the current viewport 7421 int contentX = viewToContentX(mLastTouchX + mScrollX); 7422 int contentY = viewToContentY(mLastTouchY + mScrollY); 7423 int slop = viewToContentDimension(mNavSlop); 7424 Rect rect = new Rect(contentX - slop, contentY - slop, 7425 contentX + slop, contentY + slop); 7426 nativeSelectBestAt(rect); 7427 mInitialHitTestResult = hitTestResult(null); 7428 } 7429 7430 /** 7431 * Scroll the focused text field to match the WebTextView 7432 * @param xPercent New x position of the WebTextView from 0 to 1. 7433 */ 7434 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7435 if (!inEditingMode() || mWebViewCore == null) { 7436 return; 7437 } 7438 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7439 new Float(xPercent)); 7440 } 7441 7442 /** 7443 * Scroll the focused textarea vertically to match the WebTextView 7444 * @param y New y position of the WebTextView in view coordinates 7445 */ 7446 /* package */ void scrollFocusedTextInputY(int y) { 7447 if (!inEditingMode() || mWebViewCore == null) { 7448 return; 7449 } 7450 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7451 } 7452 7453 /** 7454 * Set our starting point and time for a drag from the WebTextView. 7455 */ 7456 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7457 if (!inEditingMode()) { 7458 return; 7459 } 7460 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7461 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7462 mLastTouchTime = eventTime; 7463 if (!mScroller.isFinished()) { 7464 abortAnimation(); 7465 } 7466 mSnapScrollMode = SNAP_NONE; 7467 mVelocityTracker = VelocityTracker.obtain(); 7468 mTouchMode = TOUCH_DRAG_START_MODE; 7469 } 7470 7471 /** 7472 * Given a motion event from the WebTextView, set its location to our 7473 * coordinates, and handle the event. 7474 */ 7475 /*package*/ boolean textFieldDrag(MotionEvent event) { 7476 if (!inEditingMode()) { 7477 return false; 7478 } 7479 mDragFromTextInput = true; 7480 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7481 (float) (mWebTextView.getTop() - mScrollY)); 7482 boolean result = onTouchEvent(event); 7483 mDragFromTextInput = false; 7484 return result; 7485 } 7486 7487 /** 7488 * Due a touch up from a WebTextView. This will be handled by webkit to 7489 * change the selection. 7490 * @param event MotionEvent in the WebTextView's coordinates. 7491 */ 7492 /*package*/ void touchUpOnTextField(MotionEvent event) { 7493 if (!inEditingMode()) { 7494 return; 7495 } 7496 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7497 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7498 int slop = viewToContentDimension(mNavSlop); 7499 nativeMotionUp(x, y, slop); 7500 } 7501 7502 /** 7503 * Called when pressing the center key or trackball on a textfield. 7504 */ 7505 /*package*/ void centerKeyPressOnTextField() { 7506 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7507 nativeCursorNodePointer()); 7508 } 7509 7510 private void doShortPress() { 7511 if (mNativeClass == 0) { 7512 return; 7513 } 7514 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7515 return; 7516 } 7517 mTouchMode = TOUCH_DONE_MODE; 7518 updateSelection(); 7519 switchOutDrawHistory(); 7520 // mLastTouchX and mLastTouchY are the point in the current viewport 7521 int contentX = viewToContentX(mLastTouchX + mScrollX); 7522 int contentY = viewToContentY(mLastTouchY + mScrollY); 7523 int slop = viewToContentDimension(mNavSlop); 7524 if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) { 7525 // set mTouchHighlightRequested to 0 to cause an immediate 7526 // drawing of the touch rings 7527 mTouchHighlightRequested = 0; 7528 invalidate(mTouchHighlightRegion.getBounds()); 7529 mPrivateHandler.postDelayed(new Runnable() { 7530 @Override 7531 public void run() { 7532 removeTouchHighlight(); 7533 } 7534 }, ViewConfiguration.getPressedStateDuration()); 7535 } 7536 if (getSettings().supportTouchOnly()) { 7537 removeTouchHighlight(); 7538 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7539 // use "0" as generation id to inform WebKit to use the same x/y as 7540 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7541 touchUpData.mMoveGeneration = 0; 7542 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7543 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7544 WebViewCore.MotionUpData motionUpData = new WebViewCore 7545 .MotionUpData(); 7546 motionUpData.mFrame = nativeCacheHitFramePointer(); 7547 motionUpData.mNode = nativeCacheHitNodePointer(); 7548 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7549 motionUpData.mX = contentX; 7550 motionUpData.mY = contentY; 7551 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7552 motionUpData); 7553 } else { 7554 doMotionUp(contentX, contentY); 7555 } 7556 } 7557 7558 private void doMotionUp(int contentX, int contentY) { 7559 int slop = viewToContentDimension(mNavSlop); 7560 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7561 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7562 } 7563 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7564 playSoundEffect(SoundEffectConstants.CLICK); 7565 } 7566 } 7567 7568 void sendPluginDrawMsg() { 7569 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7570 } 7571 7572 /** 7573 * Returns plugin bounds if x/y in content coordinates corresponds to a 7574 * plugin. Otherwise a NULL rectangle is returned. 7575 */ 7576 Rect getPluginBounds(int x, int y) { 7577 int slop = viewToContentDimension(mNavSlop); 7578 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7579 return nativeCacheHitNodeBounds(); 7580 } else { 7581 return null; 7582 } 7583 } 7584 7585 /* 7586 * Return true if the rect (e.g. plugin) is fully visible and maximized 7587 * inside the WebView. 7588 */ 7589 boolean isRectFitOnScreen(Rect rect) { 7590 final int rectWidth = rect.width(); 7591 final int rectHeight = rect.height(); 7592 final int viewWidth = getViewWidth(); 7593 final int viewHeight = getViewHeightWithTitle(); 7594 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7595 scale = mZoomManager.computeScaleWithLimits(scale); 7596 return !mZoomManager.willScaleTriggerZoom(scale) 7597 && contentToViewX(rect.left) >= mScrollX 7598 && contentToViewX(rect.right) <= mScrollX + viewWidth 7599 && contentToViewY(rect.top) >= mScrollY 7600 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7601 } 7602 7603 /* 7604 * Maximize and center the rectangle, specified in the document coordinate 7605 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7606 * animated scroll to center it. If the zoom needs to be changed, find the 7607 * zoom center and do a smooth zoom transition. The rect is in document 7608 * coordinates 7609 */ 7610 void centerFitRect(Rect rect) { 7611 final int rectWidth = rect.width(); 7612 final int rectHeight = rect.height(); 7613 final int viewWidth = getViewWidth(); 7614 final int viewHeight = getViewHeightWithTitle(); 7615 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7616 / rectHeight); 7617 scale = mZoomManager.computeScaleWithLimits(scale); 7618 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7619 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7620 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7621 true, 0); 7622 } else { 7623 float actualScale = mZoomManager.getScale(); 7624 float oldScreenX = rect.left * actualScale - mScrollX; 7625 float rectViewX = rect.left * scale; 7626 float rectViewWidth = rectWidth * scale; 7627 float newMaxWidth = mContentWidth * scale; 7628 float newScreenX = (viewWidth - rectViewWidth) / 2; 7629 // pin the newX to the WebView 7630 if (newScreenX > rectViewX) { 7631 newScreenX = rectViewX; 7632 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7633 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7634 } 7635 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7636 / (scale - actualScale); 7637 float oldScreenY = rect.top * actualScale + getTitleHeight() 7638 - mScrollY; 7639 float rectViewY = rect.top * scale + getTitleHeight(); 7640 float rectViewHeight = rectHeight * scale; 7641 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7642 float newScreenY = (viewHeight - rectViewHeight) / 2; 7643 // pin the newY to the WebView 7644 if (newScreenY > rectViewY) { 7645 newScreenY = rectViewY; 7646 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7647 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7648 } 7649 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7650 / (scale - actualScale); 7651 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7652 mZoomManager.startZoomAnimation(scale, false); 7653 } 7654 } 7655 7656 // Called by JNI to handle a touch on a node representing an email address, 7657 // address, or phone number 7658 private void overrideLoading(String url) { 7659 mCallbackProxy.uiOverrideUrlLoading(url); 7660 } 7661 7662 @Override 7663 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7664 // FIXME: If a subwindow is showing find, and the user touches the 7665 // background window, it can steal focus. 7666 if (mFindIsUp) return false; 7667 boolean result = false; 7668 if (inEditingMode()) { 7669 result = mWebTextView.requestFocus(direction, 7670 previouslyFocusedRect); 7671 } else { 7672 result = super.requestFocus(direction, previouslyFocusedRect); 7673 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7674 // For cases such as GMail, where we gain focus from a direction, 7675 // we want to move to the first available link. 7676 // FIXME: If there are no visible links, we may not want to 7677 int fakeKeyDirection = 0; 7678 switch(direction) { 7679 case View.FOCUS_UP: 7680 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7681 break; 7682 case View.FOCUS_DOWN: 7683 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7684 break; 7685 case View.FOCUS_LEFT: 7686 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7687 break; 7688 case View.FOCUS_RIGHT: 7689 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7690 break; 7691 default: 7692 return result; 7693 } 7694 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7695 navHandledKey(fakeKeyDirection, 1, true, 0); 7696 } 7697 } 7698 } 7699 return result; 7700 } 7701 7702 @Override 7703 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7704 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7705 7706 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7707 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7708 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7709 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7710 7711 int measuredHeight = heightSize; 7712 int measuredWidth = widthSize; 7713 7714 // Grab the content size from WebViewCore. 7715 int contentHeight = contentToViewDimension(mContentHeight); 7716 int contentWidth = contentToViewDimension(mContentWidth); 7717 7718// Log.d(LOGTAG, "------- measure " + heightMode); 7719 7720 if (heightMode != MeasureSpec.EXACTLY) { 7721 mHeightCanMeasure = true; 7722 measuredHeight = contentHeight; 7723 if (heightMode == MeasureSpec.AT_MOST) { 7724 // If we are larger than the AT_MOST height, then our height can 7725 // no longer be measured and we should scroll internally. 7726 if (measuredHeight > heightSize) { 7727 measuredHeight = heightSize; 7728 mHeightCanMeasure = false; 7729 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7730 } 7731 } 7732 } else { 7733 mHeightCanMeasure = false; 7734 } 7735 if (mNativeClass != 0) { 7736 nativeSetHeightCanMeasure(mHeightCanMeasure); 7737 } 7738 // For the width, always use the given size unless unspecified. 7739 if (widthMode == MeasureSpec.UNSPECIFIED) { 7740 mWidthCanMeasure = true; 7741 measuredWidth = contentWidth; 7742 } else { 7743 if (measuredWidth < contentWidth) { 7744 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7745 } 7746 mWidthCanMeasure = false; 7747 } 7748 7749 synchronized (this) { 7750 setMeasuredDimension(measuredWidth, measuredHeight); 7751 } 7752 } 7753 7754 @Override 7755 public boolean requestChildRectangleOnScreen(View child, 7756 Rect rect, 7757 boolean immediate) { 7758 if (mNativeClass == 0) { 7759 return false; 7760 } 7761 // don't scroll while in zoom animation. When it is done, we will adjust 7762 // the necessary components (e.g., WebTextView if it is in editing mode) 7763 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7764 return false; 7765 } 7766 7767 rect.offset(child.getLeft() - child.getScrollX(), 7768 child.getTop() - child.getScrollY()); 7769 7770 Rect content = new Rect(viewToContentX(mScrollX), 7771 viewToContentY(mScrollY), 7772 viewToContentX(mScrollX + getWidth() 7773 - getVerticalScrollbarWidth()), 7774 viewToContentY(mScrollY + getViewHeightWithTitle())); 7775 content = nativeSubtractLayers(content); 7776 int screenTop = contentToViewY(content.top); 7777 int screenBottom = contentToViewY(content.bottom); 7778 int height = screenBottom - screenTop; 7779 int scrollYDelta = 0; 7780 7781 if (rect.bottom > screenBottom) { 7782 int oneThirdOfScreenHeight = height / 3; 7783 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7784 // If the rectangle is too tall to fit in the bottom two thirds 7785 // of the screen, place it at the top. 7786 scrollYDelta = rect.top - screenTop; 7787 } else { 7788 // If the rectangle will still fit on screen, we want its 7789 // top to be in the top third of the screen. 7790 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7791 } 7792 } else if (rect.top < screenTop) { 7793 scrollYDelta = rect.top - screenTop; 7794 } 7795 7796 int screenLeft = contentToViewX(content.left); 7797 int screenRight = contentToViewX(content.right); 7798 int width = screenRight - screenLeft; 7799 int scrollXDelta = 0; 7800 7801 if (rect.right > screenRight && rect.left > screenLeft) { 7802 if (rect.width() > width) { 7803 scrollXDelta += (rect.left - screenLeft); 7804 } else { 7805 scrollXDelta += (rect.right - screenRight); 7806 } 7807 } else if (rect.left < screenLeft) { 7808 scrollXDelta -= (screenLeft - rect.left); 7809 } 7810 7811 if ((scrollYDelta | scrollXDelta) != 0) { 7812 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7813 } 7814 7815 return false; 7816 } 7817 7818 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7819 String replace, int newStart, int newEnd) { 7820 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7821 arg.mReplace = replace; 7822 arg.mNewStart = newStart; 7823 arg.mNewEnd = newEnd; 7824 mTextGeneration++; 7825 arg.mTextGeneration = mTextGeneration; 7826 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7827 } 7828 7829 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7830 // check if mWebViewCore has been destroyed 7831 if (mWebViewCore == null) { 7832 return; 7833 } 7834 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7835 arg.mEvent = event; 7836 arg.mCurrentText = currentText; 7837 // Increase our text generation number, and pass it to webcore thread 7838 mTextGeneration++; 7839 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7840 // WebKit's document state is not saved until about to leave the page. 7841 // To make sure the host application, like Browser, has the up to date 7842 // document state when it goes to background, we force to save the 7843 // document state. 7844 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7845 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7846 cursorData(), 1000); 7847 } 7848 7849 /** 7850 * @hide 7851 */ 7852 public synchronized WebViewCore getWebViewCore() { 7853 return mWebViewCore; 7854 } 7855 7856 /** 7857 * Used only by TouchEventQueue to store pending touch events. 7858 */ 7859 private static class QueuedTouch { 7860 long mSequence; 7861 MotionEvent mEvent; // Optional 7862 TouchEventData mTed; // Optional 7863 7864 QueuedTouch mNext; 7865 7866 public QueuedTouch set(TouchEventData ted) { 7867 mSequence = ted.mSequence; 7868 mTed = ted; 7869 mEvent = null; 7870 mNext = null; 7871 return this; 7872 } 7873 7874 public QueuedTouch set(MotionEvent ev, long sequence) { 7875 mEvent = MotionEvent.obtain(ev); 7876 mSequence = sequence; 7877 mTed = null; 7878 mNext = null; 7879 return this; 7880 } 7881 7882 public QueuedTouch add(QueuedTouch other) { 7883 if (other.mSequence < mSequence) { 7884 other.mNext = this; 7885 return other; 7886 } 7887 7888 QueuedTouch insertAt = this; 7889 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7890 insertAt = insertAt.mNext; 7891 } 7892 other.mNext = insertAt.mNext; 7893 insertAt.mNext = other; 7894 return this; 7895 } 7896 } 7897 7898 /** 7899 * WebView handles touch events asynchronously since some events must be passed to WebKit 7900 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7901 * of which path they take to ensure that no events are ever processed out of order 7902 * by WebView. 7903 */ 7904 private class TouchEventQueue { 7905 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7906 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7907 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7908 7909 // Events waiting to be processed. 7910 private QueuedTouch mTouchEventQueue; 7911 7912 // Known events that are waiting on a response before being enqueued. 7913 private QueuedTouch mPreQueue; 7914 7915 // Pool of QueuedTouch objects saved for later use. 7916 private QueuedTouch mQueuedTouchRecycleBin; 7917 private int mQueuedTouchRecycleCount; 7918 7919 private long mLastEventTime = Long.MAX_VALUE; 7920 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7921 7922 // milliseconds until we abandon hope of getting all of a previous gesture 7923 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7924 7925 private QueuedTouch obtainQueuedTouch() { 7926 if (mQueuedTouchRecycleBin != null) { 7927 QueuedTouch result = mQueuedTouchRecycleBin; 7928 mQueuedTouchRecycleBin = result.mNext; 7929 mQueuedTouchRecycleCount--; 7930 return result; 7931 } 7932 return new QueuedTouch(); 7933 } 7934 7935 /** 7936 * Allow events with any currently missing sequence numbers to be skipped in processing. 7937 */ 7938 public void ignoreCurrentlyMissingEvents() { 7939 mIgnoreUntilSequence = mNextTouchSequence; 7940 7941 // Run any events we have available and complete, pre-queued or otherwise. 7942 runQueuedAndPreQueuedEvents(); 7943 } 7944 7945 private void runQueuedAndPreQueuedEvents() { 7946 QueuedTouch qd = mPreQueue; 7947 boolean fromPreQueue = true; 7948 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7949 handleQueuedTouch(qd); 7950 QueuedTouch recycleMe = qd; 7951 if (fromPreQueue) { 7952 mPreQueue = qd.mNext; 7953 } else { 7954 mTouchEventQueue = qd.mNext; 7955 } 7956 recycleQueuedTouch(recycleMe); 7957 mLastHandledTouchSequence++; 7958 7959 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7960 long nextQueued = mTouchEventQueue != null ? 7961 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7962 fromPreQueue = nextPre < nextQueued; 7963 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7964 } 7965 } 7966 7967 /** 7968 * Add a TouchEventData to the pre-queue. 7969 * 7970 * An event in the pre-queue is an event that we know about that 7971 * has been sent to webkit, but that we haven't received back and 7972 * enqueued into the normal touch queue yet. If webkit ever times 7973 * out and we need to ignore currently missing events, we'll run 7974 * events from the pre-queue to patch the holes. 7975 * 7976 * @param ted TouchEventData to pre-queue 7977 */ 7978 public void preQueueTouchEventData(TouchEventData ted) { 7979 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7980 if (mPreQueue == null) { 7981 mPreQueue = newTouch; 7982 } else { 7983 QueuedTouch insertionPoint = mPreQueue; 7984 while (insertionPoint.mNext != null && 7985 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7986 insertionPoint = insertionPoint.mNext; 7987 } 7988 newTouch.mNext = insertionPoint.mNext; 7989 insertionPoint.mNext = newTouch; 7990 } 7991 } 7992 7993 private void recycleQueuedTouch(QueuedTouch qd) { 7994 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7995 qd.mNext = mQueuedTouchRecycleBin; 7996 mQueuedTouchRecycleBin = qd; 7997 mQueuedTouchRecycleCount++; 7998 } 7999 } 8000 8001 /** 8002 * Reset the touch event queue. This will dump any pending events 8003 * and reset the sequence numbering. 8004 */ 8005 public void reset() { 8006 mNextTouchSequence = Long.MIN_VALUE + 1; 8007 mLastHandledTouchSequence = Long.MIN_VALUE; 8008 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8009 while (mTouchEventQueue != null) { 8010 QueuedTouch recycleMe = mTouchEventQueue; 8011 mTouchEventQueue = mTouchEventQueue.mNext; 8012 recycleQueuedTouch(recycleMe); 8013 } 8014 while (mPreQueue != null) { 8015 QueuedTouch recycleMe = mPreQueue; 8016 mPreQueue = mPreQueue.mNext; 8017 recycleQueuedTouch(recycleMe); 8018 } 8019 } 8020 8021 /** 8022 * Return the next valid sequence number for tagging incoming touch events. 8023 * @return The next touch event sequence number 8024 */ 8025 public long nextTouchSequence() { 8026 return mNextTouchSequence++; 8027 } 8028 8029 /** 8030 * Enqueue a touch event in the form of TouchEventData. 8031 * The sequence number will be read from the mSequence field of the argument. 8032 * 8033 * If the touch event's sequence number is the next in line to be processed, it will 8034 * be handled before this method returns. Any subsequent events that have already 8035 * been queued will also be processed in their proper order. 8036 * 8037 * @param ted Touch data to be processed in order. 8038 * @return true if the event was processed before returning, false if it was just enqueued. 8039 */ 8040 public boolean enqueueTouchEvent(TouchEventData ted) { 8041 // Remove from the pre-queue if present 8042 QueuedTouch preQueue = mPreQueue; 8043 if (preQueue != null) { 8044 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 8045 // if it was present in the pre-queue, and removed from the pre-queue itself. 8046 if (preQueue.mSequence == ted.mSequence) { 8047 mPreQueue = preQueue.mNext; 8048 } else { 8049 QueuedTouch prev = preQueue; 8050 preQueue = null; 8051 while (prev.mNext != null) { 8052 if (prev.mNext.mSequence == ted.mSequence) { 8053 preQueue = prev.mNext; 8054 prev.mNext = preQueue.mNext; 8055 break; 8056 } else { 8057 prev = prev.mNext; 8058 } 8059 } 8060 } 8061 } 8062 8063 if (ted.mSequence < mLastHandledTouchSequence) { 8064 // Stale event and we already moved on; drop it. (Should not be common.) 8065 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8066 " received from webcore; ignoring"); 8067 return false; 8068 } 8069 8070 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8071 return false; 8072 } 8073 8074 // dropStaleGestures above might have fast-forwarded us to 8075 // an event we have already. 8076 runNextQueuedEvents(); 8077 8078 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8079 if (preQueue != null) { 8080 recycleQueuedTouch(preQueue); 8081 preQueue = null; 8082 } 8083 handleQueuedTouchEventData(ted); 8084 8085 mLastHandledTouchSequence++; 8086 8087 // Do we have any more? Run them if so. 8088 runNextQueuedEvents(); 8089 } else { 8090 // Reuse the pre-queued object if we had it. 8091 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8092 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8093 } 8094 return true; 8095 } 8096 8097 /** 8098 * Enqueue a touch event in the form of a MotionEvent from the framework. 8099 * 8100 * If the touch event's sequence number is the next in line to be processed, it will 8101 * be handled before this method returns. Any subsequent events that have already 8102 * been queued will also be processed in their proper order. 8103 * 8104 * @param ev MotionEvent to be processed in order 8105 */ 8106 public void enqueueTouchEvent(MotionEvent ev) { 8107 final long sequence = nextTouchSequence(); 8108 8109 if (dropStaleGestures(ev, sequence)) { 8110 return; 8111 } 8112 8113 // dropStaleGestures above might have fast-forwarded us to 8114 // an event we have already. 8115 runNextQueuedEvents(); 8116 8117 if (mLastHandledTouchSequence + 1 == sequence) { 8118 handleQueuedMotionEvent(ev); 8119 8120 mLastHandledTouchSequence++; 8121 8122 // Do we have any more? Run them if so. 8123 runNextQueuedEvents(); 8124 } else { 8125 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8126 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8127 } 8128 } 8129 8130 private void runNextQueuedEvents() { 8131 QueuedTouch qd = mTouchEventQueue; 8132 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8133 handleQueuedTouch(qd); 8134 QueuedTouch recycleMe = qd; 8135 qd = qd.mNext; 8136 recycleQueuedTouch(recycleMe); 8137 mLastHandledTouchSequence++; 8138 } 8139 mTouchEventQueue = qd; 8140 } 8141 8142 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8143 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8144 // This is to make sure that we don't attempt to process a tap 8145 // or long press when webkit takes too long to get back to us. 8146 // The movement will be properly confirmed when we process the 8147 // enqueued event later. 8148 final int dx = Math.round(ev.getX()) - mLastTouchX; 8149 final int dy = Math.round(ev.getY()) - mLastTouchY; 8150 if (dx * dx + dy * dy > mTouchSlopSquare) { 8151 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8152 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8153 } 8154 } 8155 8156 if (mTouchEventQueue == null) { 8157 return sequence <= mLastHandledTouchSequence; 8158 } 8159 8160 // If we have a new down event and it's been a while since the last event 8161 // we saw, catch up as best we can and keep going. 8162 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8163 long eventTime = ev.getEventTime(); 8164 long lastHandledEventTime = mLastEventTime; 8165 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8166 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8167 "Catching up."); 8168 runQueuedAndPreQueuedEvents(); 8169 8170 // Drop leftovers that we truly don't have. 8171 QueuedTouch qd = mTouchEventQueue; 8172 while (qd != null && qd.mSequence < sequence) { 8173 QueuedTouch recycleMe = qd; 8174 qd = qd.mNext; 8175 recycleQueuedTouch(recycleMe); 8176 } 8177 mTouchEventQueue = qd; 8178 mLastHandledTouchSequence = sequence - 1; 8179 } 8180 } 8181 8182 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8183 QueuedTouch qd = mTouchEventQueue; 8184 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8185 QueuedTouch recycleMe = qd; 8186 qd = qd.mNext; 8187 recycleQueuedTouch(recycleMe); 8188 } 8189 mTouchEventQueue = qd; 8190 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8191 } 8192 8193 if (mPreQueue != null) { 8194 // Drop stale prequeued events 8195 QueuedTouch qd = mPreQueue; 8196 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8197 QueuedTouch recycleMe = qd; 8198 qd = qd.mNext; 8199 recycleQueuedTouch(recycleMe); 8200 } 8201 mPreQueue = qd; 8202 } 8203 8204 return sequence <= mLastHandledTouchSequence; 8205 } 8206 8207 private void handleQueuedTouch(QueuedTouch qt) { 8208 if (qt.mTed != null) { 8209 handleQueuedTouchEventData(qt.mTed); 8210 } else { 8211 handleQueuedMotionEvent(qt.mEvent); 8212 qt.mEvent.recycle(); 8213 } 8214 } 8215 8216 private void handleQueuedMotionEvent(MotionEvent ev) { 8217 mLastEventTime = ev.getEventTime(); 8218 int action = ev.getActionMasked(); 8219 if (ev.getPointerCount() > 1) { // Multi-touch 8220 handleMultiTouchInWebView(ev); 8221 } else { 8222 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8223 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8224 // ScaleGestureDetector needs a consistent event stream to operate properly. 8225 // It won't take any action with fewer than two pointers, but it needs to 8226 // update internal bookkeeping state. 8227 detector.onTouchEvent(ev); 8228 } 8229 8230 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8231 } 8232 } 8233 8234 private void handleQueuedTouchEventData(TouchEventData ted) { 8235 if (ted.mMotionEvent != null) { 8236 mLastEventTime = ted.mMotionEvent.getEventTime(); 8237 } 8238 if (!ted.mReprocess) { 8239 if (ted.mAction == MotionEvent.ACTION_DOWN 8240 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8241 // if prevent default is called from WebCore, UI 8242 // will not handle the rest of the touch events any 8243 // more. 8244 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8245 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8246 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8247 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8248 // the return for the first ACTION_MOVE will decide 8249 // whether UI will handle touch or not. Currently no 8250 // support for alternating prevent default 8251 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8252 : PREVENT_DEFAULT_NO; 8253 } 8254 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8255 mTouchHighlightRegion.setEmpty(); 8256 } 8257 } else { 8258 if (ted.mPoints.length > 1) { // multi-touch 8259 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8260 mPreventDefault = PREVENT_DEFAULT_NO; 8261 handleMultiTouchInWebView(ted.mMotionEvent); 8262 } else { 8263 mPreventDefault = PREVENT_DEFAULT_YES; 8264 } 8265 return; 8266 } 8267 8268 // prevent default is not called in WebCore, so the 8269 // message needs to be reprocessed in UI 8270 if (!ted.mNativeResult) { 8271 // Following is for single touch. 8272 switch (ted.mAction) { 8273 case MotionEvent.ACTION_DOWN: 8274 mLastDeferTouchX = ted.mPointsInView[0].x; 8275 mLastDeferTouchY = ted.mPointsInView[0].y; 8276 mDeferTouchMode = TOUCH_INIT_MODE; 8277 break; 8278 case MotionEvent.ACTION_MOVE: { 8279 // no snapping in defer process 8280 int x = ted.mPointsInView[0].x; 8281 int y = ted.mPointsInView[0].y; 8282 8283 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8284 mDeferTouchMode = TOUCH_DRAG_MODE; 8285 mLastDeferTouchX = x; 8286 mLastDeferTouchY = y; 8287 startScrollingLayer(x, y); 8288 startDrag(); 8289 } 8290 int deltaX = pinLocX((int) (mScrollX 8291 + mLastDeferTouchX - x)) 8292 - mScrollX; 8293 int deltaY = pinLocY((int) (mScrollY 8294 + mLastDeferTouchY - y)) 8295 - mScrollY; 8296 doDrag(deltaX, deltaY); 8297 if (deltaX != 0) mLastDeferTouchX = x; 8298 if (deltaY != 0) mLastDeferTouchY = y; 8299 break; 8300 } 8301 case MotionEvent.ACTION_UP: 8302 case MotionEvent.ACTION_CANCEL: 8303 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8304 // no fling in defer process 8305 mScroller.springBack(mScrollX, mScrollY, 0, 8306 computeMaxScrollX(), 0, 8307 computeMaxScrollY()); 8308 invalidate(); 8309 WebViewCore.resumePriority(); 8310 WebViewCore.resumeUpdatePicture(mWebViewCore); 8311 } 8312 mDeferTouchMode = TOUCH_DONE_MODE; 8313 break; 8314 case WebViewCore.ACTION_DOUBLETAP: 8315 // doDoubleTap() needs mLastTouchX/Y as anchor 8316 mLastDeferTouchX = ted.mPointsInView[0].x; 8317 mLastDeferTouchY = ted.mPointsInView[0].y; 8318 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8319 mDeferTouchMode = TOUCH_DONE_MODE; 8320 break; 8321 case WebViewCore.ACTION_LONGPRESS: 8322 HitTestResult hitTest = getHitTestResult(); 8323 if (hitTest != null && hitTest.mType 8324 != HitTestResult.UNKNOWN_TYPE) { 8325 performLongClick(); 8326 } 8327 mDeferTouchMode = TOUCH_DONE_MODE; 8328 break; 8329 } 8330 } 8331 } 8332 } 8333 } 8334 8335 //------------------------------------------------------------------------- 8336 // Methods can be called from a separate thread, like WebViewCore 8337 // If it needs to call the View system, it has to send message. 8338 //------------------------------------------------------------------------- 8339 8340 /** 8341 * General handler to receive message coming from webkit thread 8342 */ 8343 class PrivateHandler extends Handler { 8344 @Override 8345 public void handleMessage(Message msg) { 8346 // exclude INVAL_RECT_MSG_ID since it is frequently output 8347 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8348 if (msg.what >= FIRST_PRIVATE_MSG_ID 8349 && msg.what <= LAST_PRIVATE_MSG_ID) { 8350 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8351 - FIRST_PRIVATE_MSG_ID]); 8352 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8353 && msg.what <= LAST_PACKAGE_MSG_ID) { 8354 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8355 - FIRST_PACKAGE_MSG_ID]); 8356 } else { 8357 Log.v(LOGTAG, Integer.toString(msg.what)); 8358 } 8359 } 8360 if (mWebViewCore == null) { 8361 // after WebView's destroy() is called, skip handling messages. 8362 return; 8363 } 8364 if (mBlockWebkitViewMessages 8365 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8366 // Blocking messages from webkit 8367 return; 8368 } 8369 switch (msg.what) { 8370 case REMEMBER_PASSWORD: { 8371 mDatabase.setUsernamePassword( 8372 msg.getData().getString("host"), 8373 msg.getData().getString("username"), 8374 msg.getData().getString("password")); 8375 ((Message) msg.obj).sendToTarget(); 8376 break; 8377 } 8378 case NEVER_REMEMBER_PASSWORD: { 8379 mDatabase.setUsernamePassword( 8380 msg.getData().getString("host"), null, null); 8381 ((Message) msg.obj).sendToTarget(); 8382 break; 8383 } 8384 case PREVENT_DEFAULT_TIMEOUT: { 8385 // if timeout happens, cancel it so that it won't block UI 8386 // to continue handling touch events 8387 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8388 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8389 || (msg.arg1 == MotionEvent.ACTION_MOVE 8390 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8391 cancelWebCoreTouchEvent( 8392 viewToContentX(mLastTouchX + mScrollX), 8393 viewToContentY(mLastTouchY + mScrollY), 8394 true); 8395 } 8396 break; 8397 } 8398 case SCROLL_SELECT_TEXT: { 8399 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8400 mSentAutoScrollMessage = false; 8401 break; 8402 } 8403 if (mCurrentScrollingLayerId == 0) { 8404 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8405 } else { 8406 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8407 mScrollingLayerRect.top + mAutoScrollY); 8408 } 8409 sendEmptyMessageDelayed( 8410 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8411 break; 8412 } 8413 case UPDATE_SELECTION: { 8414 if (mTouchMode == TOUCH_INIT_MODE 8415 || mTouchMode == TOUCH_SHORTPRESS_MODE 8416 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8417 updateSelection(); 8418 } 8419 break; 8420 } 8421 case SWITCH_TO_SHORTPRESS: { 8422 mInitialHitTestResult = null; // set by updateSelection() 8423 if (mTouchMode == TOUCH_INIT_MODE) { 8424 if (!getSettings().supportTouchOnly() 8425 && mPreventDefault != PREVENT_DEFAULT_YES) { 8426 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8427 updateSelection(); 8428 } else { 8429 // set to TOUCH_SHORTPRESS_MODE so that it won't 8430 // trigger double tap any more 8431 mTouchMode = TOUCH_SHORTPRESS_MODE; 8432 } 8433 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8434 mTouchMode = TOUCH_DONE_MODE; 8435 } 8436 break; 8437 } 8438 case SWITCH_TO_LONGPRESS: { 8439 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 8440 removeTouchHighlight(); 8441 } 8442 if (inFullScreenMode() || mDeferTouchProcess) { 8443 TouchEventData ted = new TouchEventData(); 8444 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8445 ted.mIds = new int[1]; 8446 ted.mIds[0] = 0; 8447 ted.mPoints = new Point[1]; 8448 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8449 viewToContentY(mLastTouchY + mScrollY)); 8450 ted.mPointsInView = new Point[1]; 8451 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8452 // metaState for long press is tricky. Should it be the 8453 // state when the press started or when the press was 8454 // released? Or some intermediary key state? For 8455 // simplicity for now, we don't set it. 8456 ted.mMetaState = 0; 8457 ted.mReprocess = mDeferTouchProcess; 8458 ted.mNativeLayer = nativeScrollableLayer( 8459 ted.mPoints[0].x, ted.mPoints[0].y, 8460 ted.mNativeLayerRect, null); 8461 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8462 mTouchEventQueue.preQueueTouchEventData(ted); 8463 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8464 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8465 mTouchMode = TOUCH_DONE_MODE; 8466 performLongClick(); 8467 } 8468 break; 8469 } 8470 case RELEASE_SINGLE_TAP: { 8471 doShortPress(); 8472 break; 8473 } 8474 case SCROLL_TO_MSG_ID: { 8475 // arg1 = animate, arg2 = onlyIfImeIsShowing 8476 // obj = Point(x, y) 8477 if (msg.arg2 == 1) { 8478 // This scroll is intended to bring the textfield into 8479 // view, but is only necessary if the IME is showing 8480 InputMethodManager imm = InputMethodManager.peekInstance(); 8481 if (imm == null || !imm.isAcceptingText() 8482 || (!imm.isActive(WebView.this) && (!inEditingMode() 8483 || !imm.isActive(mWebTextView)))) { 8484 break; 8485 } 8486 } 8487 final Point p = (Point) msg.obj; 8488 if (msg.arg1 == 1) { 8489 spawnContentScrollTo(p.x, p.y); 8490 } else { 8491 setContentScrollTo(p.x, p.y); 8492 } 8493 break; 8494 } 8495 case UPDATE_ZOOM_RANGE: { 8496 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8497 // mScrollX contains the new minPrefWidth 8498 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8499 break; 8500 } 8501 case UPDATE_ZOOM_DENSITY: { 8502 final float density = (Float) msg.obj; 8503 mZoomManager.updateDefaultZoomDensity(density); 8504 break; 8505 } 8506 case REPLACE_BASE_CONTENT: { 8507 nativeReplaceBaseContent(msg.arg1); 8508 break; 8509 } 8510 case NEW_PICTURE_MSG_ID: { 8511 // called for new content 8512 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8513 setNewPicture(draw, true); 8514 break; 8515 } 8516 case WEBCORE_INITIALIZED_MSG_ID: 8517 // nativeCreate sets mNativeClass to a non-zero value 8518 String drawableDir = BrowserFrame.getRawResFilename( 8519 BrowserFrame.DRAWABLEDIR, mContext); 8520 WindowManager windowManager = 8521 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8522 Display display = windowManager.getDefaultDisplay(); 8523 nativeCreate(msg.arg1, drawableDir, 8524 ActivityManager.isHighEndGfx(display)); 8525 if (mDelaySetPicture != null) { 8526 setNewPicture(mDelaySetPicture, true); 8527 mDelaySetPicture = null; 8528 } 8529 if (mIsPaused) { 8530 nativeSetPauseDrawing(mNativeClass, true); 8531 } 8532 break; 8533 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8534 // Make sure that the textfield is currently focused 8535 // and representing the same node as the pointer. 8536 if (inEditingMode() && 8537 mWebTextView.isSameTextField(msg.arg1)) { 8538 if (msg.arg2 == mTextGeneration) { 8539 String text = (String) msg.obj; 8540 if (null == text) { 8541 text = ""; 8542 } 8543 mWebTextView.setTextAndKeepSelection(text); 8544 } 8545 } 8546 break; 8547 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8548 displaySoftKeyboard(true); 8549 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8550 case UPDATE_TEXT_SELECTION_MSG_ID: 8551 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8552 (WebViewCore.TextSelectionData) msg.obj); 8553 break; 8554 case FORM_DID_BLUR: 8555 if (inEditingMode() 8556 && mWebTextView.isSameTextField(msg.arg1)) { 8557 hideSoftKeyboard(); 8558 } 8559 break; 8560 case RETURN_LABEL: 8561 if (inEditingMode() 8562 && mWebTextView.isSameTextField(msg.arg1)) { 8563 mWebTextView.setHint((String) msg.obj); 8564 InputMethodManager imm 8565 = InputMethodManager.peekInstance(); 8566 // The hint is propagated to the IME in 8567 // onCreateInputConnection. If the IME is already 8568 // active, restart it so that its hint text is updated. 8569 if (imm != null && imm.isActive(mWebTextView)) { 8570 imm.restartInput(mWebTextView); 8571 } 8572 } 8573 break; 8574 case UNHANDLED_NAV_KEY: 8575 navHandledKey(msg.arg1, 1, false, 0); 8576 break; 8577 case UPDATE_TEXT_ENTRY_MSG_ID: 8578 // this is sent after finishing resize in WebViewCore. Make 8579 // sure the text edit box is still on the screen. 8580 if (inEditingMode() && nativeCursorIsTextInput()) { 8581 updateWebTextViewPosition(); 8582 } 8583 break; 8584 case CLEAR_TEXT_ENTRY: 8585 clearTextEntry(); 8586 break; 8587 case INVAL_RECT_MSG_ID: { 8588 Rect r = (Rect)msg.obj; 8589 if (r == null) { 8590 invalidate(); 8591 } else { 8592 // we need to scale r from content into view coords, 8593 // which viewInvalidate() does for us 8594 viewInvalidate(r.left, r.top, r.right, r.bottom); 8595 } 8596 break; 8597 } 8598 case REQUEST_FORM_DATA: 8599 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8600 if (mWebTextView.isSameTextField(msg.arg1)) { 8601 mWebTextView.setAdapterCustom(adapter); 8602 } 8603 break; 8604 8605 case LONG_PRESS_CENTER: 8606 // as this is shared by keydown and trackballdown, reset all 8607 // the states 8608 mGotCenterDown = false; 8609 mTrackballDown = false; 8610 performLongClick(); 8611 break; 8612 8613 case WEBCORE_NEED_TOUCH_EVENTS: 8614 mForwardTouchEvents = (msg.arg1 != 0); 8615 break; 8616 8617 case PREVENT_TOUCH_ID: 8618 if (inFullScreenMode()) { 8619 break; 8620 } 8621 TouchEventData ted = (TouchEventData) msg.obj; 8622 8623 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8624 // WebCore is responding to us; remove pending timeout. 8625 // It will be re-posted when needed. 8626 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8627 } 8628 break; 8629 8630 case REQUEST_KEYBOARD: 8631 if (msg.arg1 == 0) { 8632 hideSoftKeyboard(); 8633 } else { 8634 displaySoftKeyboard(false); 8635 } 8636 break; 8637 8638 case FIND_AGAIN: 8639 // Ignore if find has been dismissed. 8640 if (mFindIsUp && mFindCallback != null) { 8641 mFindCallback.findAll(); 8642 } 8643 break; 8644 8645 case DRAG_HELD_MOTIONLESS: 8646 mHeldMotionless = MOTIONLESS_TRUE; 8647 invalidate(); 8648 // fall through to keep scrollbars awake 8649 8650 case AWAKEN_SCROLL_BARS: 8651 if (mTouchMode == TOUCH_DRAG_MODE 8652 && mHeldMotionless == MOTIONLESS_TRUE) { 8653 awakenScrollBars(ViewConfiguration 8654 .getScrollDefaultDelay(), false); 8655 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8656 .obtainMessage(AWAKEN_SCROLL_BARS), 8657 ViewConfiguration.getScrollDefaultDelay()); 8658 } 8659 break; 8660 8661 case DO_MOTION_UP: 8662 doMotionUp(msg.arg1, msg.arg2); 8663 break; 8664 8665 case SCREEN_ON: 8666 setKeepScreenOn(msg.arg1 == 1); 8667 break; 8668 8669 case ENTER_FULLSCREEN_VIDEO: 8670 int layerId = msg.arg1; 8671 8672 String url = (String) msg.obj; 8673 if (mHTML5VideoViewProxy != null) { 8674 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8675 } 8676 break; 8677 8678 case SHOW_FULLSCREEN: { 8679 View view = (View) msg.obj; 8680 int orientation = msg.arg1; 8681 int npp = msg.arg2; 8682 8683 if (inFullScreenMode()) { 8684 Log.w(LOGTAG, "Should not have another full screen."); 8685 dismissFullScreenMode(); 8686 } 8687 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8688 mFullScreenHolder.setContentView(view); 8689 mFullScreenHolder.show(); 8690 invalidate(); 8691 8692 break; 8693 } 8694 case HIDE_FULLSCREEN: 8695 dismissFullScreenMode(); 8696 break; 8697 8698 case DOM_FOCUS_CHANGED: 8699 if (inEditingMode()) { 8700 nativeClearCursor(); 8701 rebuildWebTextView(); 8702 } 8703 break; 8704 8705 case SHOW_RECT_MSG_ID: { 8706 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8707 int x = mScrollX; 8708 int left = contentToViewX(data.mLeft); 8709 int width = contentToViewDimension(data.mWidth); 8710 int maxWidth = contentToViewDimension(data.mContentWidth); 8711 int viewWidth = getViewWidth(); 8712 if (width < viewWidth) { 8713 // center align 8714 x += left + width / 2 - mScrollX - viewWidth / 2; 8715 } else { 8716 x += (int) (left + data.mXPercentInDoc * width 8717 - mScrollX - data.mXPercentInView * viewWidth); 8718 } 8719 if (DebugFlags.WEB_VIEW) { 8720 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8721 width + ",maxWidth=" + maxWidth + 8722 ",viewWidth=" + viewWidth + ",x=" 8723 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8724 ",xPercentInView=" + data.mXPercentInView+ ")"); 8725 } 8726 // use the passing content width to cap x as the current 8727 // mContentWidth may not be updated yet 8728 x = Math.max(0, 8729 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8730 int top = contentToViewY(data.mTop); 8731 int height = contentToViewDimension(data.mHeight); 8732 int maxHeight = contentToViewDimension(data.mContentHeight); 8733 int viewHeight = getViewHeight(); 8734 int y = (int) (top + data.mYPercentInDoc * height - 8735 data.mYPercentInView * viewHeight); 8736 if (DebugFlags.WEB_VIEW) { 8737 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8738 height + ",maxHeight=" + maxHeight + 8739 ",viewHeight=" + viewHeight + ",y=" 8740 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8741 ",yPercentInView=" + data.mYPercentInView+ ")"); 8742 } 8743 // use the passing content height to cap y as the current 8744 // mContentHeight may not be updated yet 8745 y = Math.max(0, 8746 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8747 // We need to take into account the visible title height 8748 // when scrolling since y is an absolute view position. 8749 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8750 scrollTo(x, y); 8751 } 8752 break; 8753 8754 case CENTER_FIT_RECT: 8755 centerFitRect((Rect)msg.obj); 8756 break; 8757 8758 case SET_SCROLLBAR_MODES: 8759 mHorizontalScrollBarMode = msg.arg1; 8760 mVerticalScrollBarMode = msg.arg2; 8761 break; 8762 8763 case SELECTION_STRING_CHANGED: 8764 if (mAccessibilityInjector != null) { 8765 String selectionString = (String) msg.obj; 8766 mAccessibilityInjector.onSelectionStringChange(selectionString); 8767 } 8768 break; 8769 8770 case SET_TOUCH_HIGHLIGHT_RECTS: 8771 @SuppressWarnings("unchecked") 8772 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8773 setTouchHighlightRects(rects); 8774 break; 8775 8776 case SAVE_WEBARCHIVE_FINISHED: 8777 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8778 if (saveMessage.mCallback != null) { 8779 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8780 } 8781 break; 8782 8783 case SET_AUTOFILLABLE: 8784 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8785 if (mWebTextView != null) { 8786 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8787 rebuildWebTextView(); 8788 } 8789 break; 8790 8791 case AUTOFILL_COMPLETE: 8792 if (mWebTextView != null) { 8793 // Clear the WebTextView adapter when AutoFill finishes 8794 // so that the drop down gets cleared. 8795 mWebTextView.setAdapterCustom(null); 8796 } 8797 break; 8798 8799 case SELECT_AT: 8800 nativeSelectAt(msg.arg1, msg.arg2); 8801 break; 8802 8803 default: 8804 super.handleMessage(msg); 8805 break; 8806 } 8807 } 8808 } 8809 8810 private void setTouchHighlightRects(ArrayList<Rect> rects) { 8811 invalidate(mTouchHighlightRegion.getBounds()); 8812 mTouchHighlightRegion.setEmpty(); 8813 if (rects != null) { 8814 for (Rect rect : rects) { 8815 Rect viewRect = contentToViewRect(rect); 8816 // some sites, like stories in nytimes.com, set 8817 // mouse event handler in the top div. It is not 8818 // user friendly to highlight the div if it covers 8819 // more than half of the screen. 8820 if (viewRect.width() < getWidth() >> 1 8821 || viewRect.height() < getHeight() >> 1) { 8822 mTouchHighlightRegion.union(viewRect); 8823 } else { 8824 Log.w(LOGTAG, "Skip the huge selection rect:" 8825 + viewRect); 8826 } 8827 } 8828 invalidate(mTouchHighlightRegion.getBounds()); 8829 } 8830 } 8831 8832 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8833 * acceleration) */ 8834 protected void pageSwapCallback(boolean notifyAnimationStarted) { 8835 if (inEditingMode()) { 8836 didUpdateWebTextViewDimensions(ANYWHERE); 8837 } 8838 if (notifyAnimationStarted) { 8839 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 8840 } 8841 } 8842 8843 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8844 if (mNativeClass == 0) { 8845 if (mDelaySetPicture != null) { 8846 throw new IllegalStateException("Tried to setNewPicture with" 8847 + " a delay picture already set! (memory leak)"); 8848 } 8849 // Not initialized yet, delay set 8850 mDelaySetPicture = draw; 8851 return; 8852 } 8853 WebViewCore.ViewState viewState = draw.mViewState; 8854 boolean isPictureAfterFirstLayout = viewState != null; 8855 8856 if (updateBaseLayer) { 8857 // Request a callback on pageSwap (to reposition the webtextview) 8858 boolean registerPageSwapCallback = 8859 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8860 8861 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8862 getSettings().getShowVisualIndicator(), 8863 isPictureAfterFirstLayout, registerPageSwapCallback); 8864 } 8865 final Point viewSize = draw.mViewSize; 8866 // We update the layout (i.e. request a layout from the 8867 // view system) if the last view size that we sent to 8868 // WebCore matches the view size of the picture we just 8869 // received in the fixed dimension. 8870 final boolean updateLayout = viewSize.x == mLastWidthSent 8871 && viewSize.y == mLastHeightSent; 8872 // Don't send scroll event for picture coming from webkit, 8873 // since the new picture may cause a scroll event to override 8874 // the saved history scroll position. 8875 mSendScrollEvent = false; 8876 recordNewContentSize(draw.mContentSize.x, 8877 draw.mContentSize.y, updateLayout); 8878 if (isPictureAfterFirstLayout) { 8879 // Reset the last sent data here since dealing with new page. 8880 mLastWidthSent = 0; 8881 mZoomManager.onFirstLayout(draw); 8882 int scrollX = viewState.mShouldStartScrolledRight 8883 ? getContentWidth() : viewState.mScrollX; 8884 int scrollY = viewState.mScrollY; 8885 setContentScrollTo(scrollX, scrollY); 8886 if (!mDrawHistory) { 8887 // As we are on a new page, remove the WebTextView. This 8888 // is necessary for page loads driven by webkit, and in 8889 // particular when the user was on a password field, so 8890 // the WebTextView was visible. 8891 clearTextEntry(); 8892 } 8893 } 8894 mSendScrollEvent = true; 8895 8896 if (DebugFlags.WEB_VIEW) { 8897 Rect b = draw.mInvalRegion.getBounds(); 8898 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8899 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8900 } 8901 invalidateContentRect(draw.mInvalRegion.getBounds()); 8902 8903 if (mPictureListener != null) { 8904 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8905 } 8906 8907 // update the zoom information based on the new picture 8908 mZoomManager.onNewPicture(draw); 8909 8910 if (draw.mFocusSizeChanged && inEditingMode()) { 8911 mFocusSizeChanged = true; 8912 } 8913 if (isPictureAfterFirstLayout) { 8914 mViewManager.postReadyToDrawAll(); 8915 } 8916 } 8917 8918 /** 8919 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8920 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8921 */ 8922 private void updateTextSelectionFromMessage(int nodePointer, 8923 int textGeneration, WebViewCore.TextSelectionData data) { 8924 if (inEditingMode() 8925 && mWebTextView.isSameTextField(nodePointer) 8926 && textGeneration == mTextGeneration) { 8927 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8928 } 8929 } 8930 8931 // Class used to use a dropdown for a <select> element 8932 private class InvokeListBox implements Runnable { 8933 // Whether the listbox allows multiple selection. 8934 private boolean mMultiple; 8935 // Passed in to a list with multiple selection to tell 8936 // which items are selected. 8937 private int[] mSelectedArray; 8938 // Passed in to a list with single selection to tell 8939 // where the initial selection is. 8940 private int mSelection; 8941 8942 private Container[] mContainers; 8943 8944 // Need these to provide stable ids to my ArrayAdapter, 8945 // which normally does not have stable ids. (Bug 1250098) 8946 private class Container extends Object { 8947 /** 8948 * Possible values for mEnabled. Keep in sync with OptionStatus in 8949 * WebViewCore.cpp 8950 */ 8951 final static int OPTGROUP = -1; 8952 final static int OPTION_DISABLED = 0; 8953 final static int OPTION_ENABLED = 1; 8954 8955 String mString; 8956 int mEnabled; 8957 int mId; 8958 8959 @Override 8960 public String toString() { 8961 return mString; 8962 } 8963 } 8964 8965 /** 8966 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8967 * and allow filtering. 8968 */ 8969 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8970 public MyArrayListAdapter() { 8971 super(mContext, 8972 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8973 com.android.internal.R.layout.webview_select_singlechoice, 8974 mContainers); 8975 } 8976 8977 @Override 8978 public View getView(int position, View convertView, 8979 ViewGroup parent) { 8980 // Always pass in null so that we will get a new CheckedTextView 8981 // Otherwise, an item which was previously used as an <optgroup> 8982 // element (i.e. has no check), could get used as an <option> 8983 // element, which needs a checkbox/radio, but it would not have 8984 // one. 8985 convertView = super.getView(position, null, parent); 8986 Container c = item(position); 8987 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8988 // ListView does not draw dividers between disabled and 8989 // enabled elements. Use a LinearLayout to provide dividers 8990 LinearLayout layout = new LinearLayout(mContext); 8991 layout.setOrientation(LinearLayout.VERTICAL); 8992 if (position > 0) { 8993 View dividerTop = new View(mContext); 8994 dividerTop.setBackgroundResource( 8995 android.R.drawable.divider_horizontal_bright); 8996 layout.addView(dividerTop); 8997 } 8998 8999 if (Container.OPTGROUP == c.mEnabled) { 9000 // Currently select_dialog_multichoice uses CheckedTextViews. 9001 // If that changes, the class cast will no longer be valid. 9002 if (mMultiple) { 9003 Assert.assertTrue(convertView instanceof CheckedTextView); 9004 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 9005 } 9006 } else { 9007 // c.mEnabled == Container.OPTION_DISABLED 9008 // Draw the disabled element in a disabled state. 9009 convertView.setEnabled(false); 9010 } 9011 9012 layout.addView(convertView); 9013 if (position < getCount() - 1) { 9014 View dividerBottom = new View(mContext); 9015 dividerBottom.setBackgroundResource( 9016 android.R.drawable.divider_horizontal_bright); 9017 layout.addView(dividerBottom); 9018 } 9019 return layout; 9020 } 9021 return convertView; 9022 } 9023 9024 @Override 9025 public boolean hasStableIds() { 9026 // AdapterView's onChanged method uses this to determine whether 9027 // to restore the old state. Return false so that the old (out 9028 // of date) state does not replace the new, valid state. 9029 return false; 9030 } 9031 9032 private Container item(int position) { 9033 if (position < 0 || position >= getCount()) { 9034 return null; 9035 } 9036 return (Container) getItem(position); 9037 } 9038 9039 @Override 9040 public long getItemId(int position) { 9041 Container item = item(position); 9042 if (item == null) { 9043 return -1; 9044 } 9045 return item.mId; 9046 } 9047 9048 @Override 9049 public boolean areAllItemsEnabled() { 9050 return false; 9051 } 9052 9053 @Override 9054 public boolean isEnabled(int position) { 9055 Container item = item(position); 9056 if (item == null) { 9057 return false; 9058 } 9059 return Container.OPTION_ENABLED == item.mEnabled; 9060 } 9061 } 9062 9063 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 9064 mMultiple = true; 9065 mSelectedArray = selected; 9066 9067 int length = array.length; 9068 mContainers = new Container[length]; 9069 for (int i = 0; i < length; i++) { 9070 mContainers[i] = new Container(); 9071 mContainers[i].mString = array[i]; 9072 mContainers[i].mEnabled = enabled[i]; 9073 mContainers[i].mId = i; 9074 } 9075 } 9076 9077 private InvokeListBox(String[] array, int[] enabled, int selection) { 9078 mSelection = selection; 9079 mMultiple = false; 9080 9081 int length = array.length; 9082 mContainers = new Container[length]; 9083 for (int i = 0; i < length; i++) { 9084 mContainers[i] = new Container(); 9085 mContainers[i].mString = array[i]; 9086 mContainers[i].mEnabled = enabled[i]; 9087 mContainers[i].mId = i; 9088 } 9089 } 9090 9091 /* 9092 * Whenever the data set changes due to filtering, this class ensures 9093 * that the checked item remains checked. 9094 */ 9095 private class SingleDataSetObserver extends DataSetObserver { 9096 private long mCheckedId; 9097 private ListView mListView; 9098 private Adapter mAdapter; 9099 9100 /* 9101 * Create a new observer. 9102 * @param id The ID of the item to keep checked. 9103 * @param l ListView for getting and clearing the checked states 9104 * @param a Adapter for getting the IDs 9105 */ 9106 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9107 mCheckedId = id; 9108 mListView = l; 9109 mAdapter = a; 9110 } 9111 9112 @Override 9113 public void onChanged() { 9114 // The filter may have changed which item is checked. Find the 9115 // item that the ListView thinks is checked. 9116 int position = mListView.getCheckedItemPosition(); 9117 long id = mAdapter.getItemId(position); 9118 if (mCheckedId != id) { 9119 // Clear the ListView's idea of the checked item, since 9120 // it is incorrect 9121 mListView.clearChoices(); 9122 // Search for mCheckedId. If it is in the filtered list, 9123 // mark it as checked 9124 int count = mAdapter.getCount(); 9125 for (int i = 0; i < count; i++) { 9126 if (mAdapter.getItemId(i) == mCheckedId) { 9127 mListView.setItemChecked(i, true); 9128 break; 9129 } 9130 } 9131 } 9132 } 9133 } 9134 9135 public void run() { 9136 final ListView listView = (ListView) LayoutInflater.from(mContext) 9137 .inflate(com.android.internal.R.layout.select_dialog, null); 9138 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9139 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9140 .setView(listView).setCancelable(true) 9141 .setInverseBackgroundForced(true); 9142 9143 if (mMultiple) { 9144 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9145 public void onClick(DialogInterface dialog, int which) { 9146 mWebViewCore.sendMessage( 9147 EventHub.LISTBOX_CHOICES, 9148 adapter.getCount(), 0, 9149 listView.getCheckedItemPositions()); 9150 }}); 9151 b.setNegativeButton(android.R.string.cancel, 9152 new DialogInterface.OnClickListener() { 9153 public void onClick(DialogInterface dialog, int which) { 9154 mWebViewCore.sendMessage( 9155 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9156 }}); 9157 } 9158 mListBoxDialog = b.create(); 9159 listView.setAdapter(adapter); 9160 listView.setFocusableInTouchMode(true); 9161 // There is a bug (1250103) where the checks in a ListView with 9162 // multiple items selected are associated with the positions, not 9163 // the ids, so the items do not properly retain their checks when 9164 // filtered. Do not allow filtering on multiple lists until 9165 // that bug is fixed. 9166 9167 listView.setTextFilterEnabled(!mMultiple); 9168 if (mMultiple) { 9169 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9170 int length = mSelectedArray.length; 9171 for (int i = 0; i < length; i++) { 9172 listView.setItemChecked(mSelectedArray[i], true); 9173 } 9174 } else { 9175 listView.setOnItemClickListener(new OnItemClickListener() { 9176 public void onItemClick(AdapterView<?> parent, View v, 9177 int position, long id) { 9178 // Rather than sending the message right away, send it 9179 // after the page regains focus. 9180 mListBoxMessage = Message.obtain(null, 9181 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9182 mListBoxDialog.dismiss(); 9183 mListBoxDialog = null; 9184 } 9185 }); 9186 if (mSelection != -1) { 9187 listView.setSelection(mSelection); 9188 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9189 listView.setItemChecked(mSelection, true); 9190 DataSetObserver observer = new SingleDataSetObserver( 9191 adapter.getItemId(mSelection), listView, adapter); 9192 adapter.registerDataSetObserver(observer); 9193 } 9194 } 9195 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9196 public void onCancel(DialogInterface dialog) { 9197 mWebViewCore.sendMessage( 9198 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9199 mListBoxDialog = null; 9200 } 9201 }); 9202 mListBoxDialog.show(); 9203 } 9204 } 9205 9206 private Message mListBoxMessage; 9207 9208 /* 9209 * Request a dropdown menu for a listbox with multiple selection. 9210 * 9211 * @param array Labels for the listbox. 9212 * @param enabledArray State for each element in the list. See static 9213 * integers in Container class. 9214 * @param selectedArray Which positions are initally selected. 9215 */ 9216 void requestListBox(String[] array, int[] enabledArray, int[] 9217 selectedArray) { 9218 mPrivateHandler.post( 9219 new InvokeListBox(array, enabledArray, selectedArray)); 9220 } 9221 9222 /* 9223 * Request a dropdown menu for a listbox with single selection or a single 9224 * <select> element. 9225 * 9226 * @param array Labels for the listbox. 9227 * @param enabledArray State for each element in the list. See static 9228 * integers in Container class. 9229 * @param selection Which position is initally selected. 9230 */ 9231 void requestListBox(String[] array, int[] enabledArray, int selection) { 9232 mPrivateHandler.post( 9233 new InvokeListBox(array, enabledArray, selection)); 9234 } 9235 9236 // called by JNI 9237 private void sendMoveFocus(int frame, int node) { 9238 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9239 new WebViewCore.CursorData(frame, node, 0, 0)); 9240 } 9241 9242 // called by JNI 9243 private void sendMoveMouse(int frame, int node, int x, int y) { 9244 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9245 new WebViewCore.CursorData(frame, node, x, y)); 9246 } 9247 9248 /* 9249 * Send a mouse move event to the webcore thread. 9250 * 9251 * @param removeFocus Pass true to remove the WebTextView, if present. 9252 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9253 * called by JNI 9254 */ 9255 @SuppressWarnings("unused") 9256 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9257 if (removeFocus) { 9258 clearTextEntry(); 9259 } 9260 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9261 stopPaintingCaret ? 1 : 0, 0, 9262 cursorData()); 9263 } 9264 9265 /** 9266 * Called by JNI to send a message to the webcore thread that the user 9267 * touched the webpage. 9268 * @param touchGeneration Generation number of the touch, to ignore touches 9269 * after a new one has been generated. 9270 * @param frame Pointer to the frame holding the node that was touched. 9271 * @param node Pointer to the node touched. 9272 * @param x x-position of the touch. 9273 * @param y y-position of the touch. 9274 */ 9275 private void sendMotionUp(int touchGeneration, 9276 int frame, int node, int x, int y) { 9277 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9278 touchUpData.mMoveGeneration = touchGeneration; 9279 touchUpData.mFrame = frame; 9280 touchUpData.mNode = node; 9281 touchUpData.mX = x; 9282 touchUpData.mY = y; 9283 touchUpData.mNativeLayer = nativeScrollableLayer( 9284 x, y, touchUpData.mNativeLayerRect, null); 9285 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9286 } 9287 9288 9289 private int getScaledMaxXScroll() { 9290 int width; 9291 if (mHeightCanMeasure == false) { 9292 width = getViewWidth() / 4; 9293 } else { 9294 Rect visRect = new Rect(); 9295 calcOurVisibleRect(visRect); 9296 width = visRect.width() / 2; 9297 } 9298 // FIXME the divisor should be retrieved from somewhere 9299 return viewToContentX(width); 9300 } 9301 9302 private int getScaledMaxYScroll() { 9303 int height; 9304 if (mHeightCanMeasure == false) { 9305 height = getViewHeight() / 4; 9306 } else { 9307 Rect visRect = new Rect(); 9308 calcOurVisibleRect(visRect); 9309 height = visRect.height() / 2; 9310 } 9311 // FIXME the divisor should be retrieved from somewhere 9312 // the closest thing today is hard-coded into ScrollView.java 9313 // (from ScrollView.java, line 363) int maxJump = height/2; 9314 return Math.round(height * mZoomManager.getInvScale()); 9315 } 9316 9317 /** 9318 * Called by JNI to invalidate view 9319 */ 9320 private void viewInvalidate() { 9321 invalidate(); 9322 } 9323 9324 /** 9325 * Pass the key directly to the page. This assumes that 9326 * nativePageShouldHandleShiftAndArrows() returned true. 9327 */ 9328 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9329 int keyEventAction; 9330 int eventHubAction; 9331 if (down) { 9332 keyEventAction = KeyEvent.ACTION_DOWN; 9333 eventHubAction = EventHub.KEY_DOWN; 9334 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9335 } else { 9336 keyEventAction = KeyEvent.ACTION_UP; 9337 eventHubAction = EventHub.KEY_UP; 9338 } 9339 9340 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9341 1, (metaState & KeyEvent.META_SHIFT_ON) 9342 | (metaState & KeyEvent.META_ALT_ON) 9343 | (metaState & KeyEvent.META_SYM_ON) 9344 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9345 mWebViewCore.sendMessage(eventHubAction, event); 9346 } 9347 9348 // return true if the key was handled 9349 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9350 long time) { 9351 if (mNativeClass == 0) { 9352 return false; 9353 } 9354 mInitialHitTestResult = null; 9355 mLastCursorTime = time; 9356 mLastCursorBounds = nativeGetCursorRingBounds(); 9357 boolean keyHandled 9358 = nativeMoveCursor(keyCode, count, noScroll) == false; 9359 if (DebugFlags.WEB_VIEW) { 9360 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9361 + " mLastCursorTime=" + mLastCursorTime 9362 + " handled=" + keyHandled); 9363 } 9364 if (keyHandled == false) { 9365 return keyHandled; 9366 } 9367 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9368 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9369 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9370 // set last touch so that context menu related functions will work 9371 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9372 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9373 if (mHeightCanMeasure == false) { 9374 return keyHandled; 9375 } 9376 Rect visRect = new Rect(); 9377 calcOurVisibleRect(visRect); 9378 Rect outset = new Rect(visRect); 9379 int maxXScroll = visRect.width() / 2; 9380 int maxYScroll = visRect.height() / 2; 9381 outset.inset(-maxXScroll, -maxYScroll); 9382 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9383 return keyHandled; 9384 } 9385 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9386 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9387 maxXScroll); 9388 if (maxH > 0) { 9389 pinScrollBy(maxH, 0, true, 0); 9390 } else { 9391 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9392 -maxXScroll); 9393 if (maxH < 0) { 9394 pinScrollBy(maxH, 0, true, 0); 9395 } 9396 } 9397 if (mLastCursorBounds.isEmpty()) return keyHandled; 9398 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9399 return keyHandled; 9400 } 9401 if (DebugFlags.WEB_VIEW) { 9402 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9403 + contentCursorRingBounds); 9404 } 9405 requestRectangleOnScreen(viewCursorRingBounds); 9406 return keyHandled; 9407 } 9408 9409 /** 9410 * @return Whether accessibility script has been injected. 9411 */ 9412 private boolean accessibilityScriptInjected() { 9413 // TODO: Maybe the injected script should announce its presence in 9414 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9415 // will check that as one of the conditions it looks for 9416 return mAccessibilityScriptInjected; 9417 } 9418 9419 /** 9420 * Set the background color. It's white by default. Pass 9421 * zero to make the view transparent. 9422 * @param color the ARGB color described by Color.java 9423 */ 9424 @Override 9425 public void setBackgroundColor(int color) { 9426 mBackgroundColor = color; 9427 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9428 } 9429 9430 /** 9431 * @deprecated This method is now obsolete. 9432 */ 9433 @Deprecated 9434 public void debugDump() { 9435 checkThread(); 9436 nativeDebugDump(); 9437 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9438 } 9439 9440 /** 9441 * Draw the HTML page into the specified canvas. This call ignores any 9442 * view-specific zoom, scroll offset, or other changes. It does not draw 9443 * any view-specific chrome, such as progress or URL bars. 9444 * 9445 * @hide only needs to be accessible to Browser and testing 9446 */ 9447 public void drawPage(Canvas canvas) { 9448 calcOurContentVisibleRectF(mVisibleContentRect); 9449 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9450 } 9451 9452 /** 9453 * Enable the communication b/t the webView and VideoViewProxy 9454 * 9455 * @hide only used by the Browser 9456 */ 9457 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9458 mHTML5VideoViewProxy = proxy; 9459 } 9460 9461 /** 9462 * Set the time to wait between passing touches to WebCore. See also the 9463 * TOUCH_SENT_INTERVAL member for further discussion. 9464 * 9465 * @hide This is only used by the DRT test application. 9466 */ 9467 public void setTouchInterval(int interval) { 9468 mCurrentTouchInterval = interval; 9469 } 9470 9471 /** 9472 * Update our cache with updatedText. 9473 * @param updatedText The new text to put in our cache. 9474 * @hide 9475 */ 9476 protected void updateCachedTextfield(String updatedText) { 9477 // Also place our generation number so that when we look at the cache 9478 // we recognize that it is up to date. 9479 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9480 } 9481 9482 /*package*/ void autoFillForm(int autoFillQueryId) { 9483 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9484 } 9485 9486 /* package */ ViewManager getViewManager() { 9487 return mViewManager; 9488 } 9489 9490 private static void checkThread() { 9491 if (Looper.myLooper() != Looper.getMainLooper()) { 9492 Throwable throwable = new Throwable( 9493 "Warning: A WebView method was called on thread '" + 9494 Thread.currentThread().getName() + "'. " + 9495 "All WebView methods must be called on the UI thread. " + 9496 "Future versions of WebView may not support use on other threads."); 9497 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9498 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9499 } 9500 } 9501 9502 /** @hide send content invalidate */ 9503 protected void contentInvalidateAll() { 9504 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9505 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9506 } 9507 } 9508 9509 /** @hide call pageSwapCallback upon next page swap */ 9510 protected void registerPageSwapCallback() { 9511 nativeRegisterPageSwapCallback(mNativeClass); 9512 } 9513 9514 /** @hide discard all textures from tiles */ 9515 protected void discardAllTextures() { 9516 nativeDiscardAllTextures(); 9517 } 9518 9519 /** 9520 * Begin collecting per-tile profiling data 9521 * 9522 * @hide only used by profiling tests 9523 */ 9524 public void tileProfilingStart() { 9525 nativeTileProfilingStart(); 9526 } 9527 /** 9528 * Return per-tile profiling data 9529 * 9530 * @hide only used by profiling tests 9531 */ 9532 public float tileProfilingStop() { 9533 return nativeTileProfilingStop(); 9534 } 9535 9536 /** @hide only used by profiling tests */ 9537 public void tileProfilingClear() { 9538 nativeTileProfilingClear(); 9539 } 9540 /** @hide only used by profiling tests */ 9541 public int tileProfilingNumFrames() { 9542 return nativeTileProfilingNumFrames(); 9543 } 9544 /** @hide only used by profiling tests */ 9545 public int tileProfilingNumTilesInFrame(int frame) { 9546 return nativeTileProfilingNumTilesInFrame(frame); 9547 } 9548 /** @hide only used by profiling tests */ 9549 public int tileProfilingGetInt(int frame, int tile, String key) { 9550 return nativeTileProfilingGetInt(frame, tile, key); 9551 } 9552 /** @hide only used by profiling tests */ 9553 public float tileProfilingGetFloat(int frame, int tile, String key) { 9554 return nativeTileProfilingGetFloat(frame, tile, key); 9555 } 9556 9557 private native int nativeCacheHitFramePointer(); 9558 private native boolean nativeCacheHitIsPlugin(); 9559 private native Rect nativeCacheHitNodeBounds(); 9560 private native int nativeCacheHitNodePointer(); 9561 /* package */ native void nativeClearCursor(); 9562 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 9563 private native int nativeCursorFramePointer(); 9564 private native Rect nativeCursorNodeBounds(); 9565 private native int nativeCursorNodePointer(); 9566 private native boolean nativeCursorIntersects(Rect visibleRect); 9567 private native boolean nativeCursorIsAnchor(); 9568 private native boolean nativeCursorIsTextInput(); 9569 private native Point nativeCursorPosition(); 9570 private native String nativeCursorText(); 9571 /** 9572 * Returns true if the native cursor node says it wants to handle key events 9573 * (ala plugins). This can only be called if mNativeClass is non-zero! 9574 */ 9575 private native boolean nativeCursorWantsKeyEvents(); 9576 private native void nativeDebugDump(); 9577 private native void nativeDestroy(); 9578 9579 /** 9580 * Draw the picture set with a background color and extra. If 9581 * "splitIfNeeded" is true and the return value is not 0, the return value 9582 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9583 * native allocation can be freed. 9584 */ 9585 private native int nativeDraw(Canvas canvas, RectF visibleRect, 9586 int color, int extra, boolean splitIfNeeded); 9587 private native void nativeDumpDisplayTree(String urlOrNull); 9588 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9589 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9590 Rect viewRect, RectF visibleRect, float scale, int extras); 9591 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 9592 RectF visibleRect); 9593 private native void nativeExtendSelection(int x, int y); 9594 private native int nativeFindAll(String findLower, String findUpper, 9595 boolean sameAsLastSearch); 9596 private native void nativeFindNext(boolean forward); 9597 /* package */ native int nativeFocusCandidateFramePointer(); 9598 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9599 /* package */ native boolean nativeFocusCandidateIsPassword(); 9600 private native boolean nativeFocusCandidateIsRtlText(); 9601 private native boolean nativeFocusCandidateIsTextInput(); 9602 /* package */ native int nativeFocusCandidateMaxLength(); 9603 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9604 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 9605 /* package */ native String nativeFocusCandidateName(); 9606 private native Rect nativeFocusCandidateNodeBounds(); 9607 /** 9608 * @return A Rect with left, top, right, bottom set to the corresponding 9609 * padding values in the focus candidate, if it is a textfield/textarea with 9610 * a style. Otherwise return null. This is not actually a rectangle; Rect 9611 * is being used to pass four integers. 9612 */ 9613 private native Rect nativeFocusCandidatePaddingRect(); 9614 /* package */ native int nativeFocusCandidatePointer(); 9615 private native String nativeFocusCandidateText(); 9616 /* package */ native float nativeFocusCandidateTextSize(); 9617 /* package */ native int nativeFocusCandidateLineHeight(); 9618 /** 9619 * Returns an integer corresponding to WebView.cpp::type. 9620 * See WebTextView.setType() 9621 */ 9622 private native int nativeFocusCandidateType(); 9623 private native int nativeFocusCandidateLayerId(); 9624 private native boolean nativeFocusIsPlugin(); 9625 private native Rect nativeFocusNodeBounds(); 9626 /* package */ native int nativeFocusNodePointer(); 9627 private native Rect nativeGetCursorRingBounds(); 9628 private native String nativeGetSelection(); 9629 private native boolean nativeHasCursorNode(); 9630 private native boolean nativeHasFocusNode(); 9631 private native void nativeHideCursor(); 9632 private native boolean nativeHitSelection(int x, int y); 9633 private native String nativeImageURI(int x, int y); 9634 private native Rect nativeLayerBounds(int layer); 9635 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9636 // return true if the page has been scrolled 9637 private native boolean nativeMotionUp(int x, int y, int slop); 9638 // returns false if it handled the key 9639 private native boolean nativeMoveCursor(int keyCode, int count, 9640 boolean noScroll); 9641 private native int nativeMoveGeneration(); 9642 private native void nativeMoveSelection(int x, int y); 9643 /** 9644 * @return true if the page should get the shift and arrow keys, rather 9645 * than select text/navigation. 9646 * 9647 * If the focus is a plugin, or if the focus and cursor match and are 9648 * a contentEditable element, then the page should handle these keys. 9649 */ 9650 private native boolean nativePageShouldHandleShiftAndArrows(); 9651 private native boolean nativePointInNavCache(int x, int y, int slop); 9652 // Like many other of our native methods, you must make sure that 9653 // mNativeClass is not null before calling this method. 9654 private native void nativeResetSelection(); 9655 private native Point nativeSelectableText(); 9656 private native void nativeSelectAll(); 9657 private native void nativeSelectBestAt(Rect rect); 9658 private native void nativeSelectAt(int x, int y); 9659 private native int nativeSelectionX(); 9660 private native int nativeSelectionY(); 9661 private native int nativeFindIndex(); 9662 private native void nativeSetExtendSelection(); 9663 private native void nativeSetFindIsEmpty(); 9664 private native void nativeSetFindIsUp(boolean isUp); 9665 private native void nativeSetHeightCanMeasure(boolean measure); 9666 private native void nativeSetBaseLayer(int nativeInstance, 9667 int layer, Region invalRegion, 9668 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9669 boolean registerPageSwapCallback); 9670 private native int nativeGetBaseLayer(); 9671 private native void nativeShowCursorTimed(); 9672 private native void nativeReplaceBaseContent(int content); 9673 private native void nativeCopyBaseContentToPicture(Picture pict); 9674 private native boolean nativeHasContent(); 9675 private native void nativeSetSelectionPointer(int nativeInstance, 9676 boolean set, float scale, int x, int y); 9677 private native boolean nativeStartSelection(int x, int y); 9678 private native void nativeStopGL(); 9679 private native Rect nativeSubtractLayers(Rect content); 9680 private native int nativeTextGeneration(); 9681 private native void nativeRegisterPageSwapCallback(int nativeInstance); 9682 private native void nativeDiscardAllTextures(); 9683 private native void nativeTileProfilingStart(); 9684 private native float nativeTileProfilingStop(); 9685 private native void nativeTileProfilingClear(); 9686 private native int nativeTileProfilingNumFrames(); 9687 private native int nativeTileProfilingNumTilesInFrame(int frame); 9688 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9689 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9690 // Never call this version except by updateCachedTextfield(String) - 9691 // we always want to pass in our generation number. 9692 private native void nativeUpdateCachedTextfield(String updatedText, 9693 int generation); 9694 private native boolean nativeWordSelection(int x, int y); 9695 // return NO_LEFTEDGE means failure. 9696 static final int NO_LEFTEDGE = -1; 9697 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9698 9699 private native void nativeUseHardwareAccelSkia(boolean enabled); 9700 9701 // Returns a pointer to the scrollable LayerAndroid at the given point. 9702 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9703 Rect scrollBounds); 9704 /** 9705 * Scroll the specified layer. 9706 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9707 * @param newX Destination x position to which to scroll. 9708 * @param newY Destination y position to which to scroll. 9709 * @return True if the layer is successfully scrolled. 9710 */ 9711 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9712 private native void nativeSetIsScrolling(boolean isScrolling); 9713 private native int nativeGetBackgroundColor(); 9714 native boolean nativeSetProperty(String key, String value); 9715 native String nativeGetProperty(String key); 9716 private native void nativeGetTextSelectionRegion(int instance, Region region); 9717 private native void nativeGetSelectionHandles(int instance, int[] handles); 9718 /** 9719 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9720 */ 9721 private static native void nativeOnTrimMemory(int level); 9722 private static native void nativeSetPauseDrawing(int instance, boolean pause); 9723} 9724