WebView.java revision 4d8ea3bcc60d25e74e79bc9e97496b6795d36587
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 public int getType() { 1016 return mType; 1017 } 1018 1019 public String getExtra() { 1020 return mExtra; 1021 } 1022 } 1023 1024 /** 1025 * Construct a new WebView with a Context object. 1026 * @param context A Context object used to access application assets. 1027 */ 1028 public WebView(Context context) { 1029 this(context, null); 1030 } 1031 1032 /** 1033 * Construct a new WebView with layout parameters. 1034 * @param context A Context object used to access application assets. 1035 * @param attrs An AttributeSet passed to our parent. 1036 */ 1037 public WebView(Context context, AttributeSet attrs) { 1038 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1039 } 1040 1041 /** 1042 * Construct a new WebView with layout parameters and a default style. 1043 * @param context A Context object used to access application assets. 1044 * @param attrs An AttributeSet passed to our parent. 1045 * @param defStyle The default style resource ID. 1046 */ 1047 public WebView(Context context, AttributeSet attrs, int defStyle) { 1048 this(context, attrs, defStyle, false); 1049 } 1050 1051 /** 1052 * Construct a new WebView with layout parameters and a default style. 1053 * @param context A Context object used to access application assets. 1054 * @param attrs An AttributeSet passed to our parent. 1055 * @param defStyle The default style resource ID. 1056 */ 1057 public WebView(Context context, AttributeSet attrs, int defStyle, 1058 boolean privateBrowsing) { 1059 this(context, attrs, defStyle, null, privateBrowsing); 1060 } 1061 1062 /** 1063 * Construct a new WebView with layout parameters, a default style and a set 1064 * of custom Javscript interfaces to be added to the WebView at initialization 1065 * time. This guarantees that these interfaces will be available when the JS 1066 * context is initialized. 1067 * @param context A Context object used to access application assets. 1068 * @param attrs An AttributeSet passed to our parent. 1069 * @param defStyle The default style resource ID. 1070 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1071 * object implementing those interfaces, as values. 1072 * @hide pending API council approval. 1073 */ 1074 protected WebView(Context context, AttributeSet attrs, int defStyle, 1075 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1076 super(context, attrs, defStyle); 1077 checkThread(); 1078 1079 if (context == null) { 1080 throw new IllegalArgumentException("Invalid context argument"); 1081 } 1082 1083 // Used by the chrome stack to find application paths 1084 JniUtil.setContext(context); 1085 1086 mCallbackProxy = new CallbackProxy(context, this); 1087 mViewManager = new ViewManager(this); 1088 L10nUtils.setApplicationContext(context.getApplicationContext()); 1089 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1090 mDatabase = WebViewDatabase.getInstance(context); 1091 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1092 mZoomManager = new ZoomManager(this, mCallbackProxy); 1093 1094 /* The init method must follow the creation of certain member variables, 1095 * such as the mZoomManager. 1096 */ 1097 init(); 1098 setupPackageListener(context); 1099 setupProxyListener(context); 1100 updateMultiTouchSupport(context); 1101 1102 if (privateBrowsing) { 1103 startPrivateBrowsing(); 1104 } 1105 1106 mAutoFillData = new WebViewCore.AutoFillData(); 1107 } 1108 1109 private static class ProxyReceiver extends BroadcastReceiver { 1110 @Override 1111 public void onReceive(Context context, Intent intent) { 1112 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1113 handleProxyBroadcast(intent); 1114 } 1115 } 1116 } 1117 1118 /* 1119 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1120 */ 1121 private static ProxyReceiver sProxyReceiver; 1122 1123 /* 1124 * @param context This method expects this to be a valid context 1125 */ 1126 private static synchronized void setupProxyListener(Context context) { 1127 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1128 return; 1129 } 1130 IntentFilter filter = new IntentFilter(); 1131 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1132 sProxyReceiver = new ProxyReceiver(); 1133 Intent currentProxy = context.getApplicationContext().registerReceiver( 1134 sProxyReceiver, filter); 1135 if (currentProxy != null) { 1136 handleProxyBroadcast(currentProxy); 1137 } 1138 } 1139 1140 /* 1141 * @param context This method expects this to be a valid context 1142 */ 1143 private static synchronized void disableProxyListener(Context context) { 1144 if (sProxyReceiver == null) 1145 return; 1146 1147 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1148 sProxyReceiver = null; 1149 } 1150 1151 private static void handleProxyBroadcast(Intent intent) { 1152 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1153 if (proxyProperties == null || proxyProperties.getHost() == null) { 1154 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1155 return; 1156 } 1157 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1158 } 1159 1160 /* 1161 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1162 * or ACTION_PACKAGE_REMOVED. 1163 */ 1164 private static boolean sPackageInstallationReceiverAdded = false; 1165 1166 /* 1167 * A set of Google packages we monitor for the 1168 * navigator.isApplicationInstalled() API. Add additional packages as 1169 * needed. 1170 */ 1171 private static Set<String> sGoogleApps; 1172 static { 1173 sGoogleApps = new HashSet<String>(); 1174 sGoogleApps.add("com.google.android.youtube"); 1175 } 1176 1177 private static class PackageListener extends BroadcastReceiver { 1178 @Override 1179 public void onReceive(Context context, Intent intent) { 1180 final String action = intent.getAction(); 1181 final String packageName = intent.getData().getSchemeSpecificPart(); 1182 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1183 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1184 // if it is replacing, refreshPlugins() when adding 1185 return; 1186 } 1187 1188 if (sGoogleApps.contains(packageName)) { 1189 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1190 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1191 } else { 1192 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1193 } 1194 } 1195 1196 PluginManager pm = PluginManager.getInstance(context); 1197 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1198 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1199 } 1200 } 1201 } 1202 1203 private void setupPackageListener(Context context) { 1204 1205 /* 1206 * we must synchronize the instance check and the creation of the 1207 * receiver to ensure that only ONE receiver exists for all WebView 1208 * instances. 1209 */ 1210 synchronized (WebView.class) { 1211 1212 // if the receiver already exists then we do not need to register it 1213 // again 1214 if (sPackageInstallationReceiverAdded) { 1215 return; 1216 } 1217 1218 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1219 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1220 filter.addDataScheme("package"); 1221 BroadcastReceiver packageListener = new PackageListener(); 1222 context.getApplicationContext().registerReceiver(packageListener, filter); 1223 sPackageInstallationReceiverAdded = true; 1224 } 1225 1226 // check if any of the monitored apps are already installed 1227 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1228 1229 @Override 1230 protected Set<String> doInBackground(Void... unused) { 1231 Set<String> installedPackages = new HashSet<String>(); 1232 PackageManager pm = mContext.getPackageManager(); 1233 for (String name : sGoogleApps) { 1234 try { 1235 PackageInfo pInfo = pm.getPackageInfo(name, 1236 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1237 installedPackages.add(name); 1238 } catch (PackageManager.NameNotFoundException e) { 1239 // package not found 1240 } 1241 } 1242 return installedPackages; 1243 } 1244 1245 // Executes on the UI thread 1246 @Override 1247 protected void onPostExecute(Set<String> installedPackages) { 1248 if (mWebViewCore != null) { 1249 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1250 } 1251 } 1252 }; 1253 task.execute(); 1254 } 1255 1256 void updateMultiTouchSupport(Context context) { 1257 mZoomManager.updateMultiTouchSupport(context); 1258 } 1259 1260 private void init() { 1261 OnTrimMemoryListener.init(getContext()); 1262 1263 setWillNotDraw(false); 1264 setFocusable(true); 1265 setFocusableInTouchMode(true); 1266 setClickable(true); 1267 setLongClickable(true); 1268 1269 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1270 int slop = configuration.getScaledTouchSlop(); 1271 mTouchSlopSquare = slop * slop; 1272 slop = configuration.getScaledDoubleTapSlop(); 1273 mDoubleTapSlopSquare = slop * slop; 1274 final float density = getContext().getResources().getDisplayMetrics().density; 1275 // use one line height, 16 based on our current default font, for how 1276 // far we allow a touch be away from the edge of a link 1277 mNavSlop = (int) (16 * density); 1278 mZoomManager.init(density); 1279 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1280 1281 // Compute the inverse of the density squared. 1282 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1283 1284 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1285 mOverflingDistance = configuration.getScaledOverflingDistance(); 1286 1287 setScrollBarStyle(super.getScrollBarStyle()); 1288 // Initially use a size of two, since the user is likely to only hold 1289 // down two keys at a time (shift + another key) 1290 mKeysPressed = new Vector<Integer>(2); 1291 mHTML5VideoViewProxy = null ; 1292 } 1293 1294 @Override 1295 public boolean shouldDelayChildPressedState() { 1296 return true; 1297 } 1298 1299 /** 1300 * Adds accessibility APIs to JavaScript. 1301 * 1302 * Note: This method is responsible to performing the necessary 1303 * check if the accessibility APIs should be exposed. 1304 */ 1305 private void addAccessibilityApisToJavaScript() { 1306 if (AccessibilityManager.getInstance(mContext).isEnabled() 1307 && getSettings().getJavaScriptEnabled()) { 1308 // exposing the TTS for now ... 1309 final Context ctx = getContext(); 1310 if (ctx != null) { 1311 final String packageName = ctx.getPackageName(); 1312 if (packageName != null) { 1313 mTextToSpeech = new TextToSpeech(getContext(), null, null, 1314 packageName + ".**webview**"); 1315 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1316 } 1317 } 1318 } 1319 } 1320 1321 /** 1322 * Removes accessibility APIs from JavaScript. 1323 */ 1324 private void removeAccessibilityApisFromJavaScript() { 1325 // exposing the TTS for now ... 1326 if (mTextToSpeech != null) { 1327 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1328 mTextToSpeech.shutdown(); 1329 mTextToSpeech = null; 1330 } 1331 } 1332 1333 @Override 1334 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1335 super.onInitializeAccessibilityNodeInfo(info); 1336 info.setScrollable(isScrollableForAccessibility()); 1337 } 1338 1339 @Override 1340 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1341 super.onInitializeAccessibilityEvent(event); 1342 event.setScrollable(isScrollableForAccessibility()); 1343 event.setScrollX(mScrollX); 1344 event.setScrollY(mScrollY); 1345 final int convertedContentWidth = contentToViewX(getContentWidth()); 1346 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1347 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1348 final int convertedContentHeight = contentToViewY(getContentHeight()); 1349 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1350 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1351 } 1352 1353 private boolean isScrollableForAccessibility() { 1354 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1355 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1356 } 1357 1358 @Override 1359 public void setOverScrollMode(int mode) { 1360 super.setOverScrollMode(mode); 1361 if (mode != OVER_SCROLL_NEVER) { 1362 if (mOverScrollGlow == null) { 1363 mOverScrollGlow = new OverScrollGlow(this); 1364 } 1365 } else { 1366 mOverScrollGlow = null; 1367 } 1368 } 1369 1370 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1371 final float density = mContext.getResources().getDisplayMetrics().density 1372 * 100 / zoomDensity; 1373 updateDefaultZoomDensity(density); 1374 } 1375 1376 /* package */ void updateDefaultZoomDensity(float density) { 1377 mNavSlop = (int) (16 * density); 1378 mZoomManager.updateDefaultZoomDensity(density); 1379 } 1380 1381 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1382 String password, final Message resumeMsg) { 1383 boolean rVal = false; 1384 if (resumeMsg == null) { 1385 // null resumeMsg implies saving password silently 1386 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1387 } else { 1388 final Message remember = mPrivateHandler.obtainMessage( 1389 REMEMBER_PASSWORD); 1390 remember.getData().putString("host", schemePlusHost); 1391 remember.getData().putString("username", username); 1392 remember.getData().putString("password", password); 1393 remember.obj = resumeMsg; 1394 1395 final Message neverRemember = mPrivateHandler.obtainMessage( 1396 NEVER_REMEMBER_PASSWORD); 1397 neverRemember.getData().putString("host", schemePlusHost); 1398 neverRemember.getData().putString("username", username); 1399 neverRemember.getData().putString("password", password); 1400 neverRemember.obj = resumeMsg; 1401 1402 new AlertDialog.Builder(getContext()) 1403 .setTitle(com.android.internal.R.string.save_password_label) 1404 .setMessage(com.android.internal.R.string.save_password_message) 1405 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1406 new DialogInterface.OnClickListener() { 1407 public void onClick(DialogInterface dialog, int which) { 1408 resumeMsg.sendToTarget(); 1409 } 1410 }) 1411 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1412 new DialogInterface.OnClickListener() { 1413 public void onClick(DialogInterface dialog, int which) { 1414 remember.sendToTarget(); 1415 } 1416 }) 1417 .setNegativeButton(com.android.internal.R.string.save_password_never, 1418 new DialogInterface.OnClickListener() { 1419 public void onClick(DialogInterface dialog, int which) { 1420 neverRemember.sendToTarget(); 1421 } 1422 }) 1423 .setOnCancelListener(new OnCancelListener() { 1424 public void onCancel(DialogInterface dialog) { 1425 resumeMsg.sendToTarget(); 1426 } 1427 }).show(); 1428 // Return true so that WebViewCore will pause while the dialog is 1429 // up. 1430 rVal = true; 1431 } 1432 return rVal; 1433 } 1434 1435 @Override 1436 public void setScrollBarStyle(int style) { 1437 if (style == View.SCROLLBARS_INSIDE_INSET 1438 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1439 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1440 } else { 1441 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1442 } 1443 super.setScrollBarStyle(style); 1444 } 1445 1446 /** 1447 * Specify whether the horizontal scrollbar has overlay style. 1448 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1449 */ 1450 public void setHorizontalScrollbarOverlay(boolean overlay) { 1451 checkThread(); 1452 mOverlayHorizontalScrollbar = overlay; 1453 } 1454 1455 /** 1456 * Specify whether the vertical scrollbar has overlay style. 1457 * @param overlay TRUE if vertical scrollbar should have overlay style. 1458 */ 1459 public void setVerticalScrollbarOverlay(boolean overlay) { 1460 checkThread(); 1461 mOverlayVerticalScrollbar = overlay; 1462 } 1463 1464 /** 1465 * Return whether horizontal scrollbar has overlay style 1466 * @return TRUE if horizontal scrollbar has overlay style. 1467 */ 1468 public boolean overlayHorizontalScrollbar() { 1469 checkThread(); 1470 return mOverlayHorizontalScrollbar; 1471 } 1472 1473 /** 1474 * Return whether vertical scrollbar has overlay style 1475 * @return TRUE if vertical scrollbar has overlay style. 1476 */ 1477 public boolean overlayVerticalScrollbar() { 1478 checkThread(); 1479 return mOverlayVerticalScrollbar; 1480 } 1481 1482 /* 1483 * Return the width of the view where the content of WebView should render 1484 * to. 1485 * Note: this can be called from WebCoreThread. 1486 */ 1487 /* package */ int getViewWidth() { 1488 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1489 return getWidth(); 1490 } else { 1491 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1492 } 1493 } 1494 1495 /** 1496 * returns the height of the titlebarview (if any). Does not care about 1497 * scrolling 1498 * @hide 1499 */ 1500 protected int getTitleHeight() { 1501 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1502 } 1503 1504 /** 1505 * Return the amount of the titlebarview (if any) that is visible 1506 * 1507 * @deprecated This method is now obsolete. 1508 */ 1509 public int getVisibleTitleHeight() { 1510 checkThread(); 1511 return getVisibleTitleHeightImpl(); 1512 } 1513 1514 private int getVisibleTitleHeightImpl() { 1515 // need to restrict mScrollY due to over scroll 1516 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1517 getOverlappingActionModeHeight()); 1518 } 1519 1520 private int mCachedOverlappingActionModeHeight = -1; 1521 1522 private int getOverlappingActionModeHeight() { 1523 if (mFindCallback == null) { 1524 return 0; 1525 } 1526 if (mCachedOverlappingActionModeHeight < 0) { 1527 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1528 mCachedOverlappingActionModeHeight = Math.max(0, 1529 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1530 } 1531 return mCachedOverlappingActionModeHeight; 1532 } 1533 1534 /* 1535 * Return the height of the view where the content of WebView should render 1536 * to. Note that this excludes mTitleBar, if there is one. 1537 * Note: this can be called from WebCoreThread. 1538 */ 1539 /* package */ int getViewHeight() { 1540 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1541 } 1542 1543 int getViewHeightWithTitle() { 1544 int height = getHeight(); 1545 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1546 height -= getHorizontalScrollbarHeight(); 1547 } 1548 return height; 1549 } 1550 1551 /** 1552 * @return The SSL certificate for the main top-level page or null if 1553 * there is no certificate (the site is not secure). 1554 */ 1555 public SslCertificate getCertificate() { 1556 checkThread(); 1557 return mCertificate; 1558 } 1559 1560 /** 1561 * Sets the SSL certificate for the main top-level page. 1562 */ 1563 public void setCertificate(SslCertificate certificate) { 1564 checkThread(); 1565 if (DebugFlags.WEB_VIEW) { 1566 Log.v(LOGTAG, "setCertificate=" + certificate); 1567 } 1568 // here, the certificate can be null (if the site is not secure) 1569 mCertificate = certificate; 1570 } 1571 1572 //------------------------------------------------------------------------- 1573 // Methods called by activity 1574 //------------------------------------------------------------------------- 1575 1576 /** 1577 * Save the username and password for a particular host in the WebView's 1578 * internal database. 1579 * @param host The host that required the credentials. 1580 * @param username The username for the given host. 1581 * @param password The password for the given host. 1582 */ 1583 public void savePassword(String host, String username, String password) { 1584 checkThread(); 1585 mDatabase.setUsernamePassword(host, username, password); 1586 } 1587 1588 /** 1589 * Set the HTTP authentication credentials for a given host and realm. 1590 * 1591 * @param host The host for the credentials. 1592 * @param realm The realm for the credentials. 1593 * @param username The username for the password. If it is null, it means 1594 * password can't be saved. 1595 * @param password The password 1596 */ 1597 public void setHttpAuthUsernamePassword(String host, String realm, 1598 String username, String password) { 1599 checkThread(); 1600 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1601 } 1602 1603 /** 1604 * Retrieve the HTTP authentication username and password for a given 1605 * host & realm pair 1606 * 1607 * @param host The host for which the credentials apply. 1608 * @param realm The realm for which the credentials apply. 1609 * @return String[] if found, String[0] is username, which can be null and 1610 * String[1] is password. Return null if it can't find anything. 1611 */ 1612 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1613 checkThread(); 1614 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1615 } 1616 1617 /** 1618 * Remove Find or Select ActionModes, if active. 1619 */ 1620 private void clearActionModes() { 1621 if (mSelectCallback != null) { 1622 mSelectCallback.finish(); 1623 } 1624 if (mFindCallback != null) { 1625 mFindCallback.finish(); 1626 } 1627 } 1628 1629 /** 1630 * Called to clear state when moving from one page to another, or changing 1631 * in some other way that makes elements associated with the current page 1632 * (such as WebTextView or ActionModes) no longer relevant. 1633 */ 1634 private void clearHelpers() { 1635 clearTextEntry(); 1636 clearActionModes(); 1637 dismissFullScreenMode(); 1638 cancelSelectDialog(); 1639 } 1640 1641 private void cancelSelectDialog() { 1642 if (mListBoxDialog != null) { 1643 mListBoxDialog.cancel(); 1644 mListBoxDialog = null; 1645 } 1646 } 1647 1648 /** 1649 * Destroy the internal state of the WebView. This method should be called 1650 * after the WebView has been removed from the view system. No other 1651 * methods may be called on a WebView after destroy. 1652 */ 1653 public void destroy() { 1654 checkThread(); 1655 destroyImpl(); 1656 } 1657 1658 private void destroyImpl() { 1659 clearHelpers(); 1660 if (mListBoxDialog != null) { 1661 mListBoxDialog.dismiss(); 1662 mListBoxDialog = null; 1663 } 1664 // remove so that it doesn't cause events 1665 if (mWebTextView != null) { 1666 mWebTextView.remove(); 1667 mWebTextView = null; 1668 } 1669 if (mNativeClass != 0) nativeStopGL(); 1670 if (mWebViewCore != null) { 1671 // Set the handlers to null before destroying WebViewCore so no 1672 // more messages will be posted. 1673 mCallbackProxy.setWebViewClient(null); 1674 mCallbackProxy.setWebChromeClient(null); 1675 // Tell WebViewCore to destroy itself 1676 synchronized (this) { 1677 WebViewCore webViewCore = mWebViewCore; 1678 mWebViewCore = null; // prevent using partial webViewCore 1679 webViewCore.destroy(); 1680 } 1681 // Remove any pending messages that might not be serviced yet. 1682 mPrivateHandler.removeCallbacksAndMessages(null); 1683 mCallbackProxy.removeCallbacksAndMessages(null); 1684 // Wake up the WebCore thread just in case it is waiting for a 1685 // JavaScript dialog. 1686 synchronized (mCallbackProxy) { 1687 mCallbackProxy.notify(); 1688 } 1689 } 1690 if (mNativeClass != 0) { 1691 nativeDestroy(); 1692 mNativeClass = 0; 1693 } 1694 } 1695 1696 /** 1697 * Enables platform notifications of data state and proxy changes. 1698 * Notifications are enabled by default. 1699 * 1700 * @deprecated This method is now obsolete. 1701 */ 1702 @Deprecated 1703 public static void enablePlatformNotifications() { 1704 checkThread(); 1705 synchronized (WebView.class) { 1706 Network.enablePlatformNotifications(); 1707 sNotificationsEnabled = true; 1708 Context context = JniUtil.getContext(); 1709 if (context != null) 1710 setupProxyListener(context); 1711 } 1712 } 1713 1714 /** 1715 * Disables platform notifications of data state and proxy changes. 1716 * Notifications are enabled by default. 1717 * 1718 * @deprecated This method is now obsolete. 1719 */ 1720 @Deprecated 1721 public static void disablePlatformNotifications() { 1722 checkThread(); 1723 synchronized (WebView.class) { 1724 Network.disablePlatformNotifications(); 1725 sNotificationsEnabled = false; 1726 Context context = JniUtil.getContext(); 1727 if (context != null) 1728 disableProxyListener(context); 1729 } 1730 } 1731 1732 /** 1733 * Sets JavaScript engine flags. 1734 * 1735 * @param flags JS engine flags in a String 1736 * 1737 * @hide pending API solidification 1738 */ 1739 public void setJsFlags(String flags) { 1740 checkThread(); 1741 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1742 } 1743 1744 /** 1745 * Inform WebView of the network state. This is used to set 1746 * the JavaScript property window.navigator.isOnline and 1747 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1748 * @param networkUp boolean indicating if network is available 1749 */ 1750 public void setNetworkAvailable(boolean networkUp) { 1751 checkThread(); 1752 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1753 networkUp ? 1 : 0, 0); 1754 } 1755 1756 /** 1757 * Inform WebView about the current network type. 1758 * {@hide} 1759 */ 1760 public void setNetworkType(String type, String subtype) { 1761 checkThread(); 1762 Map<String, String> map = new HashMap<String, String>(); 1763 map.put("type", type); 1764 map.put("subtype", subtype); 1765 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1766 } 1767 /** 1768 * Save the state of this WebView used in 1769 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1770 * method no longer stores the display data for this WebView. The previous 1771 * behavior could potentially leak files if {@link #restoreState} was never 1772 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1773 * and restoring the display data. 1774 * @param outState The Bundle to store the WebView state. 1775 * @return The same copy of the back/forward list used to save the state. If 1776 * saveState fails, the returned list will be null. 1777 * @see #savePicture 1778 * @see #restorePicture 1779 */ 1780 public WebBackForwardList saveState(Bundle outState) { 1781 checkThread(); 1782 if (outState == null) { 1783 return null; 1784 } 1785 // We grab a copy of the back/forward list because a client of WebView 1786 // may have invalidated the history list by calling clearHistory. 1787 WebBackForwardList list = copyBackForwardList(); 1788 final int currentIndex = list.getCurrentIndex(); 1789 final int size = list.getSize(); 1790 // We should fail saving the state if the list is empty or the index is 1791 // not in a valid range. 1792 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1793 return null; 1794 } 1795 outState.putInt("index", currentIndex); 1796 // FIXME: This should just be a byte[][] instead of ArrayList but 1797 // Parcel.java does not have the code to handle multi-dimensional 1798 // arrays. 1799 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1800 for (int i = 0; i < size; i++) { 1801 WebHistoryItem item = list.getItemAtIndex(i); 1802 if (null == item) { 1803 // FIXME: this shouldn't happen 1804 // need to determine how item got set to null 1805 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1806 return null; 1807 } 1808 byte[] data = item.getFlattenedData(); 1809 if (data == null) { 1810 // It would be very odd to not have any data for a given history 1811 // item. And we will fail to rebuild the history list without 1812 // flattened data. 1813 return null; 1814 } 1815 history.add(data); 1816 } 1817 outState.putSerializable("history", history); 1818 if (mCertificate != null) { 1819 outState.putBundle("certificate", 1820 SslCertificate.saveState(mCertificate)); 1821 } 1822 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1823 mZoomManager.saveZoomState(outState); 1824 return list; 1825 } 1826 1827 /** 1828 * Save the current display data to the Bundle given. Used in conjunction 1829 * with {@link #saveState}. 1830 * @param b A Bundle to store the display data. 1831 * @param dest The file to store the serialized picture data. Will be 1832 * overwritten with this WebView's picture data. 1833 * @return True if the picture was successfully saved. 1834 * @deprecated This method is now obsolete. 1835 */ 1836 @Deprecated 1837 public boolean savePicture(Bundle b, final File dest) { 1838 checkThread(); 1839 if (dest == null || b == null) { 1840 return false; 1841 } 1842 final Picture p = capturePicture(); 1843 // Use a temporary file while writing to ensure the destination file 1844 // contains valid data. 1845 final File temp = new File(dest.getPath() + ".writing"); 1846 new Thread(new Runnable() { 1847 public void run() { 1848 FileOutputStream out = null; 1849 try { 1850 out = new FileOutputStream(temp); 1851 p.writeToStream(out); 1852 // Writing the picture succeeded, rename the temporary file 1853 // to the destination. 1854 temp.renameTo(dest); 1855 } catch (Exception e) { 1856 // too late to do anything about it. 1857 } finally { 1858 if (out != null) { 1859 try { 1860 out.close(); 1861 } catch (Exception e) { 1862 // Can't do anything about that 1863 } 1864 } 1865 temp.delete(); 1866 } 1867 } 1868 }).start(); 1869 // now update the bundle 1870 b.putInt("scrollX", mScrollX); 1871 b.putInt("scrollY", mScrollY); 1872 mZoomManager.saveZoomState(b); 1873 return true; 1874 } 1875 1876 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1877 int sx = b.getInt("scrollX", 0); 1878 int sy = b.getInt("scrollY", 0); 1879 1880 mDrawHistory = true; 1881 mHistoryPicture = p; 1882 1883 mScrollX = sx; 1884 mScrollY = sy; 1885 mZoomManager.restoreZoomState(b); 1886 final float scale = mZoomManager.getScale(); 1887 mHistoryWidth = Math.round(p.getWidth() * scale); 1888 mHistoryHeight = Math.round(p.getHeight() * scale); 1889 1890 invalidate(); 1891 } 1892 1893 /** 1894 * Restore the display data that was save in {@link #savePicture}. Used in 1895 * conjunction with {@link #restoreState}. 1896 * 1897 * Note that this will not work if the WebView is hardware accelerated. 1898 * @param b A Bundle containing the saved display data. 1899 * @param src The file where the picture data was stored. 1900 * @return True if the picture was successfully restored. 1901 * @deprecated This method is now obsolete. 1902 */ 1903 @Deprecated 1904 public boolean restorePicture(Bundle b, File src) { 1905 checkThread(); 1906 if (src == null || b == null) { 1907 return false; 1908 } 1909 if (!src.exists()) { 1910 return false; 1911 } 1912 try { 1913 final FileInputStream in = new FileInputStream(src); 1914 final Bundle copy = new Bundle(b); 1915 new Thread(new Runnable() { 1916 public void run() { 1917 try { 1918 final Picture p = Picture.createFromStream(in); 1919 if (p != null) { 1920 // Post a runnable on the main thread to update the 1921 // history picture fields. 1922 mPrivateHandler.post(new Runnable() { 1923 public void run() { 1924 restoreHistoryPictureFields(p, copy); 1925 } 1926 }); 1927 } 1928 } finally { 1929 try { 1930 in.close(); 1931 } catch (Exception e) { 1932 // Nothing we can do now. 1933 } 1934 } 1935 } 1936 }).start(); 1937 } catch (FileNotFoundException e){ 1938 e.printStackTrace(); 1939 } 1940 return true; 1941 } 1942 1943 /** 1944 * Saves the view data to the output stream. The output is highly 1945 * version specific, and may not be able to be loaded by newer versions 1946 * of WebView. 1947 * @param stream The {@link OutputStream} to save to 1948 * @return True if saved successfully 1949 * @hide 1950 */ 1951 public boolean saveViewState(OutputStream stream) { 1952 try { 1953 return ViewStateSerializer.serializeViewState(stream, this); 1954 } catch (IOException e) { 1955 Log.w(LOGTAG, "Failed to saveViewState", e); 1956 } 1957 return false; 1958 } 1959 1960 /** 1961 * Loads the view data from the input stream. See 1962 * {@link #saveViewState(OutputStream)} for more information. 1963 * @param stream The {@link InputStream} to load from 1964 * @return True if loaded successfully 1965 * @hide 1966 */ 1967 public boolean loadViewState(InputStream stream) { 1968 try { 1969 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1970 mBlockWebkitViewMessages = true; 1971 setNewPicture(mLoadedPicture, true); 1972 mLoadedPicture.mViewState = null; 1973 return true; 1974 } catch (IOException e) { 1975 Log.w(LOGTAG, "Failed to loadViewState", e); 1976 } 1977 return false; 1978 } 1979 1980 /** 1981 * Clears the view state set with {@link #loadViewState(InputStream)}. 1982 * This WebView will then switch to showing the content from webkit 1983 * @hide 1984 */ 1985 public void clearViewState() { 1986 mBlockWebkitViewMessages = false; 1987 mLoadedPicture = null; 1988 invalidate(); 1989 } 1990 1991 /** 1992 * Restore the state of this WebView from the given map used in 1993 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1994 * be called to restore the state of the WebView before using the object. If 1995 * it is called after the WebView has had a chance to build state (load 1996 * pages, create a back/forward list, etc.) there may be undesirable 1997 * side-effects. Please note that this method no longer restores the 1998 * display data for this WebView. See {@link #savePicture} and {@link 1999 * #restorePicture} for saving and restoring the display data. 2000 * @param inState The incoming Bundle of state. 2001 * @return The restored back/forward list or null if restoreState failed. 2002 * @see #savePicture 2003 * @see #restorePicture 2004 */ 2005 public WebBackForwardList restoreState(Bundle inState) { 2006 checkThread(); 2007 WebBackForwardList returnList = null; 2008 if (inState == null) { 2009 return returnList; 2010 } 2011 if (inState.containsKey("index") && inState.containsKey("history")) { 2012 mCertificate = SslCertificate.restoreState( 2013 inState.getBundle("certificate")); 2014 2015 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2016 final int index = inState.getInt("index"); 2017 // We can't use a clone of the list because we need to modify the 2018 // shared copy, so synchronize instead to prevent concurrent 2019 // modifications. 2020 synchronized (list) { 2021 final List<byte[]> history = 2022 (List<byte[]>) inState.getSerializable("history"); 2023 final int size = history.size(); 2024 // Check the index bounds so we don't crash in native code while 2025 // restoring the history index. 2026 if (index < 0 || index >= size) { 2027 return null; 2028 } 2029 for (int i = 0; i < size; i++) { 2030 byte[] data = history.remove(0); 2031 if (data == null) { 2032 // If we somehow have null data, we cannot reconstruct 2033 // the item and thus our history list cannot be rebuilt. 2034 return null; 2035 } 2036 WebHistoryItem item = new WebHistoryItem(data); 2037 list.addHistoryItem(item); 2038 } 2039 // Grab the most recent copy to return to the caller. 2040 returnList = copyBackForwardList(); 2041 // Update the copy to have the correct index. 2042 returnList.setCurrentIndex(index); 2043 } 2044 // Restore private browsing setting. 2045 if (inState.getBoolean("privateBrowsingEnabled")) { 2046 getSettings().setPrivateBrowsingEnabled(true); 2047 } 2048 mZoomManager.restoreZoomState(inState); 2049 // Remove all pending messages because we are restoring previous 2050 // state. 2051 mWebViewCore.removeMessages(); 2052 // Send a restore state message. 2053 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2054 } 2055 return returnList; 2056 } 2057 2058 /** 2059 * Load the given URL with the specified additional HTTP headers. 2060 * @param url The URL of the resource to load. 2061 * @param additionalHttpHeaders The additional headers to be used in the 2062 * HTTP request for this URL, specified as a map from name to 2063 * value. Note that if this map contains any of the headers 2064 * that are set by default by the WebView, such as those 2065 * controlling caching, accept types or the User-Agent, their 2066 * values may be overriden by the WebView's defaults. 2067 */ 2068 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2069 checkThread(); 2070 loadUrlImpl(url, additionalHttpHeaders); 2071 } 2072 2073 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2074 switchOutDrawHistory(); 2075 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2076 arg.mUrl = url; 2077 arg.mExtraHeaders = extraHeaders; 2078 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2079 clearHelpers(); 2080 } 2081 2082 /** 2083 * Load the given URL. 2084 * @param url The URL of the resource to load. 2085 */ 2086 public void loadUrl(String url) { 2087 checkThread(); 2088 loadUrlImpl(url); 2089 } 2090 2091 private void loadUrlImpl(String url) { 2092 if (url == null) { 2093 return; 2094 } 2095 loadUrlImpl(url, null); 2096 } 2097 2098 /** 2099 * Load the url with postData using "POST" method into the WebView. If url 2100 * is not a network url, it will be loaded with {link 2101 * {@link #loadUrl(String)} instead. 2102 * 2103 * @param url The url of the resource to load. 2104 * @param postData The data will be passed to "POST" request. 2105 */ 2106 public void postUrl(String url, byte[] postData) { 2107 checkThread(); 2108 if (URLUtil.isNetworkUrl(url)) { 2109 switchOutDrawHistory(); 2110 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2111 arg.mUrl = url; 2112 arg.mPostData = postData; 2113 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2114 clearHelpers(); 2115 } else { 2116 loadUrlImpl(url); 2117 } 2118 } 2119 2120 /** 2121 * Load the given data into the WebView using a 'data' scheme URL. 2122 * <p> 2123 * Note that JavaScript's same origin policy means that script running in a 2124 * page loaded using this method will be unable to access content loaded 2125 * using any scheme other than 'data', including 'http(s)'. To avoid this 2126 * restriction, use {@link 2127 * #loadDataWithBaseURL(String,String,String,String,String) 2128 * loadDataWithBaseURL()} with an appropriate base URL. 2129 * <p> 2130 * If the value of the encoding parameter is 'base64', then the data must 2131 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2132 * octets inside the range of safe URL characters and use the standard %xx 2133 * hex encoding of URLs for octets outside that range. For example, 2134 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2135 * <p> 2136 * The 'data' scheme URL formed by this method uses the default US-ASCII 2137 * charset. If you need need to set a different charset, you should form a 2138 * 'data' scheme URL which explicitly specifies a charset parameter in the 2139 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2140 * Note that the charset obtained from the mediatype portion of a data URL 2141 * always overrides that specified in the HTML or XML document itself. 2142 * @param data A String of data in the given encoding. 2143 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2144 * @param encoding The encoding of the data. 2145 */ 2146 public void loadData(String data, String mimeType, String encoding) { 2147 checkThread(); 2148 loadDataImpl(data, mimeType, encoding); 2149 } 2150 2151 private void loadDataImpl(String data, String mimeType, String encoding) { 2152 StringBuilder dataUrl = new StringBuilder("data:"); 2153 dataUrl.append(mimeType); 2154 if ("base64".equals(encoding)) { 2155 dataUrl.append(";base64"); 2156 } 2157 dataUrl.append(","); 2158 dataUrl.append(data); 2159 loadUrlImpl(dataUrl.toString()); 2160 } 2161 2162 /** 2163 * Load the given data into the WebView, using baseUrl as the base URL for 2164 * the content. The base URL is used both to resolve relative URLs and when 2165 * applying JavaScript's same origin policy. The historyUrl is used for the 2166 * history entry. 2167 * <p> 2168 * Note that content specified in this way can access local device files 2169 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2170 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2171 * <p> 2172 * If the base URL uses the data scheme, this method is equivalent to 2173 * calling {@link #loadData(String,String,String) loadData()} and the 2174 * historyUrl is ignored. 2175 * @param baseUrl URL to use as the page's base URL. If null defaults to 2176 * 'about:blank' 2177 * @param data A String of data in the given encoding. 2178 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2179 * defaults to 'text/html'. 2180 * @param encoding The encoding of the data. 2181 * @param historyUrl URL to use as the history entry, if null defaults to 2182 * 'about:blank'. 2183 */ 2184 public void loadDataWithBaseURL(String baseUrl, String data, 2185 String mimeType, String encoding, String historyUrl) { 2186 checkThread(); 2187 2188 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2189 loadDataImpl(data, mimeType, encoding); 2190 return; 2191 } 2192 switchOutDrawHistory(); 2193 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2194 arg.mBaseUrl = baseUrl; 2195 arg.mData = data; 2196 arg.mMimeType = mimeType; 2197 arg.mEncoding = encoding; 2198 arg.mHistoryUrl = historyUrl; 2199 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2200 clearHelpers(); 2201 } 2202 2203 /** 2204 * Saves the current view as a web archive. 2205 * 2206 * @param filename The filename where the archive should be placed. 2207 */ 2208 public void saveWebArchive(String filename) { 2209 checkThread(); 2210 saveWebArchiveImpl(filename, false, null); 2211 } 2212 2213 /* package */ static class SaveWebArchiveMessage { 2214 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2215 mBasename = basename; 2216 mAutoname = autoname; 2217 mCallback = callback; 2218 } 2219 2220 /* package */ final String mBasename; 2221 /* package */ final boolean mAutoname; 2222 /* package */ final ValueCallback<String> mCallback; 2223 /* package */ String mResultFile; 2224 } 2225 2226 /** 2227 * Saves the current view as a web archive. 2228 * 2229 * @param basename The filename where the archive should be placed. 2230 * @param autoname If false, takes basename to be a file. If true, basename 2231 * is assumed to be a directory in which a filename will be 2232 * chosen according to the url of the current page. 2233 * @param callback Called after the web archive has been saved. The 2234 * parameter for onReceiveValue will either be the filename 2235 * under which the file was saved, or null if saving the 2236 * file failed. 2237 */ 2238 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2239 checkThread(); 2240 saveWebArchiveImpl(basename, autoname, callback); 2241 } 2242 2243 private void saveWebArchiveImpl(String basename, boolean autoname, 2244 ValueCallback<String> callback) { 2245 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2246 new SaveWebArchiveMessage(basename, autoname, callback)); 2247 } 2248 2249 /** 2250 * Stop the current load. 2251 */ 2252 public void stopLoading() { 2253 checkThread(); 2254 // TODO: should we clear all the messages in the queue before sending 2255 // STOP_LOADING? 2256 switchOutDrawHistory(); 2257 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2258 } 2259 2260 /** 2261 * Reload the current url. 2262 */ 2263 public void reload() { 2264 checkThread(); 2265 clearHelpers(); 2266 switchOutDrawHistory(); 2267 mWebViewCore.sendMessage(EventHub.RELOAD); 2268 } 2269 2270 /** 2271 * Return true if this WebView has a back history item. 2272 * @return True iff this WebView has a back history item. 2273 */ 2274 public boolean canGoBack() { 2275 checkThread(); 2276 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2277 synchronized (l) { 2278 if (l.getClearPending()) { 2279 return false; 2280 } else { 2281 return l.getCurrentIndex() > 0; 2282 } 2283 } 2284 } 2285 2286 /** 2287 * Go back in the history of this WebView. 2288 */ 2289 public void goBack() { 2290 checkThread(); 2291 goBackOrForwardImpl(-1); 2292 } 2293 2294 /** 2295 * Return true if this WebView has a forward history item. 2296 * @return True iff this Webview has a forward history item. 2297 */ 2298 public boolean canGoForward() { 2299 checkThread(); 2300 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2301 synchronized (l) { 2302 if (l.getClearPending()) { 2303 return false; 2304 } else { 2305 return l.getCurrentIndex() < l.getSize() - 1; 2306 } 2307 } 2308 } 2309 2310 /** 2311 * Go forward in the history of this WebView. 2312 */ 2313 public void goForward() { 2314 checkThread(); 2315 goBackOrForwardImpl(1); 2316 } 2317 2318 /** 2319 * Return true if the page can go back or forward the given 2320 * number of steps. 2321 * @param steps The negative or positive number of steps to move the 2322 * history. 2323 */ 2324 public boolean canGoBackOrForward(int steps) { 2325 checkThread(); 2326 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2327 synchronized (l) { 2328 if (l.getClearPending()) { 2329 return false; 2330 } else { 2331 int newIndex = l.getCurrentIndex() + steps; 2332 return newIndex >= 0 && newIndex < l.getSize(); 2333 } 2334 } 2335 } 2336 2337 /** 2338 * Go to the history item that is the number of steps away from 2339 * the current item. Steps is negative if backward and positive 2340 * if forward. 2341 * @param steps The number of steps to take back or forward in the back 2342 * forward list. 2343 */ 2344 public void goBackOrForward(int steps) { 2345 checkThread(); 2346 goBackOrForwardImpl(steps); 2347 } 2348 2349 private void goBackOrForwardImpl(int steps) { 2350 goBackOrForward(steps, false); 2351 } 2352 2353 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2354 if (steps != 0) { 2355 clearHelpers(); 2356 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2357 ignoreSnapshot ? 1 : 0); 2358 } 2359 } 2360 2361 /** 2362 * Returns true if private browsing is enabled in this WebView. 2363 */ 2364 public boolean isPrivateBrowsingEnabled() { 2365 checkThread(); 2366 return getSettings().isPrivateBrowsingEnabled(); 2367 } 2368 2369 private void startPrivateBrowsing() { 2370 getSettings().setPrivateBrowsingEnabled(true); 2371 } 2372 2373 private boolean extendScroll(int y) { 2374 int finalY = mScroller.getFinalY(); 2375 int newY = pinLocY(finalY + y); 2376 if (newY == finalY) return false; 2377 mScroller.setFinalY(newY); 2378 mScroller.extendDuration(computeDuration(0, y)); 2379 return true; 2380 } 2381 2382 /** 2383 * Scroll the contents of the view up by half the view size 2384 * @param top true to jump to the top of the page 2385 * @return true if the page was scrolled 2386 */ 2387 public boolean pageUp(boolean top) { 2388 checkThread(); 2389 if (mNativeClass == 0) { 2390 return false; 2391 } 2392 nativeClearCursor(); // start next trackball movement from page edge 2393 if (top) { 2394 // go to the top of the document 2395 return pinScrollTo(mScrollX, 0, true, 0); 2396 } 2397 // Page up 2398 int h = getHeight(); 2399 int y; 2400 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2401 y = -h + PAGE_SCROLL_OVERLAP; 2402 } else { 2403 y = -h / 2; 2404 } 2405 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2406 : extendScroll(y); 2407 } 2408 2409 /** 2410 * Scroll the contents of the view down by half the page size 2411 * @param bottom true to jump to bottom of page 2412 * @return true if the page was scrolled 2413 */ 2414 public boolean pageDown(boolean bottom) { 2415 checkThread(); 2416 if (mNativeClass == 0) { 2417 return false; 2418 } 2419 nativeClearCursor(); // start next trackball movement from page edge 2420 if (bottom) { 2421 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2422 } 2423 // Page down. 2424 int h = getHeight(); 2425 int y; 2426 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2427 y = h - PAGE_SCROLL_OVERLAP; 2428 } else { 2429 y = h / 2; 2430 } 2431 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2432 : extendScroll(y); 2433 } 2434 2435 /** 2436 * Clear the view so that onDraw() will draw nothing but white background, 2437 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2438 */ 2439 public void clearView() { 2440 checkThread(); 2441 mContentWidth = 0; 2442 mContentHeight = 0; 2443 setBaseLayer(0, null, false, false, false); 2444 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2445 } 2446 2447 /** 2448 * Return a new picture that captures the current display of the webview. 2449 * This is a copy of the display, and will be unaffected if the webview 2450 * later loads a different URL. 2451 * 2452 * @return a picture containing the current contents of the view. Note this 2453 * picture is of the entire document, and is not restricted to the 2454 * bounds of the view. 2455 */ 2456 public Picture capturePicture() { 2457 checkThread(); 2458 if (mNativeClass == 0) return null; 2459 Picture result = new Picture(); 2460 nativeCopyBaseContentToPicture(result); 2461 return result; 2462 } 2463 2464 /** 2465 * Return true if the browser is displaying a TextView for text input. 2466 */ 2467 private boolean inEditingMode() { 2468 return mWebTextView != null && mWebTextView.getParent() != null; 2469 } 2470 2471 /** 2472 * Remove the WebTextView. 2473 */ 2474 private void clearTextEntry() { 2475 if (inEditingMode()) { 2476 mWebTextView.remove(); 2477 } else { 2478 // The keyboard may be open with the WebView as the served view 2479 hideSoftKeyboard(); 2480 } 2481 } 2482 2483 /** 2484 * Return the current scale of the WebView 2485 * @return The current scale. 2486 */ 2487 public float getScale() { 2488 checkThread(); 2489 return mZoomManager.getScale(); 2490 } 2491 2492 // Called by JNI. Returns the scale to apply to the text selection handles 2493 /* package */ float getTextHandleScale() { 2494 float density = mContext.getResources().getDisplayMetrics().density; 2495 return density / getScale(); 2496 } 2497 2498 /** 2499 * Compute the reading level scale of the WebView 2500 * @param scale The current scale. 2501 * @return The reading level scale. 2502 */ 2503 /*package*/ float computeReadingLevelScale(float scale) { 2504 return mZoomManager.computeReadingLevelScale(scale); 2505 } 2506 2507 /** 2508 * Set the initial scale for the WebView. 0 means default. If 2509 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2510 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2511 * WebView starts with this value as initial scale. 2512 * Please note that unlike the scale properties in the viewport meta tag, 2513 * this method doesn't take the screen density into account. 2514 * 2515 * @param scaleInPercent The initial scale in percent. 2516 */ 2517 public void setInitialScale(int scaleInPercent) { 2518 checkThread(); 2519 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2520 } 2521 2522 /** 2523 * Invoke the graphical zoom picker widget for this WebView. This will 2524 * result in the zoom widget appearing on the screen to control the zoom 2525 * level of this WebView. 2526 */ 2527 public void invokeZoomPicker() { 2528 checkThread(); 2529 if (!getSettings().supportZoom()) { 2530 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2531 return; 2532 } 2533 clearHelpers(); 2534 mZoomManager.invokeZoomPicker(); 2535 } 2536 2537 /** 2538 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2539 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2540 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2541 * anchor does not have a url or if it is a JavaScript url, the type will 2542 * be UNKNOWN_TYPE and the url has to be retrieved through 2543 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2544 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2545 * the "extra" field. A type of 2546 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2547 * a child node. If a phone number is found, the HitTestResult type is set 2548 * to PHONE_TYPE and the phone number is set in the "extra" field of 2549 * HitTestResult. If a map address is found, the HitTestResult type is set 2550 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2551 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2552 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2553 * HitTestResult type is set to UNKNOWN_TYPE. 2554 */ 2555 public HitTestResult getHitTestResult() { 2556 checkThread(); 2557 return hitTestResult(mInitialHitTestResult); 2558 } 2559 2560 private HitTestResult hitTestResult(HitTestResult fallback) { 2561 if (mNativeClass == 0) { 2562 return null; 2563 } 2564 2565 HitTestResult result = new HitTestResult(); 2566 if (nativeHasCursorNode()) { 2567 if (nativeCursorIsTextInput()) { 2568 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2569 } else { 2570 String text = nativeCursorText(); 2571 if (text != null) { 2572 if (text.startsWith(SCHEME_TEL)) { 2573 result.setType(HitTestResult.PHONE_TYPE); 2574 result.setExtra(URLDecoder.decode(text 2575 .substring(SCHEME_TEL.length()))); 2576 } else if (text.startsWith(SCHEME_MAILTO)) { 2577 result.setType(HitTestResult.EMAIL_TYPE); 2578 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2579 } else if (text.startsWith(SCHEME_GEO)) { 2580 result.setType(HitTestResult.GEO_TYPE); 2581 result.setExtra(URLDecoder.decode(text 2582 .substring(SCHEME_GEO.length()))); 2583 } else if (nativeCursorIsAnchor()) { 2584 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2585 result.setExtra(text); 2586 } 2587 } 2588 } 2589 } else if (fallback != null) { 2590 /* If webkit causes a rebuild while the long press is in progress, 2591 * the cursor node may be reset, even if it is still around. This 2592 * uses the cursor node saved when the touch began. Since the 2593 * nativeImageURI below only changes the result if it is successful, 2594 * this uses the data beneath the touch if available or the original 2595 * tap data otherwise. 2596 */ 2597 Log.v(LOGTAG, "hitTestResult use fallback"); 2598 result = fallback; 2599 } 2600 int type = result.getType(); 2601 if (type == HitTestResult.UNKNOWN_TYPE 2602 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2603 // Now check to see if it is an image. 2604 int contentX = viewToContentX(mLastTouchX + mScrollX); 2605 int contentY = viewToContentY(mLastTouchY + mScrollY); 2606 String text = nativeImageURI(contentX, contentY); 2607 if (text != null) { 2608 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2609 HitTestResult.IMAGE_TYPE : 2610 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2611 result.setExtra(text); 2612 } 2613 } 2614 return result; 2615 } 2616 2617 // Called by JNI when the DOM has changed the focus. Clear the focus so 2618 // that new keys will go to the newly focused field 2619 private void domChangedFocus() { 2620 if (inEditingMode()) { 2621 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2622 } 2623 } 2624 /** 2625 * Request the anchor or image element URL at the last tapped point. 2626 * If hrefMsg is null, this method returns immediately and does not 2627 * dispatch hrefMsg to its target. If the tapped point hits an image, 2628 * an anchor, or an image in an anchor, the message associates 2629 * strings in named keys in its data. The value paired with the key 2630 * may be an empty string. 2631 * 2632 * @param hrefMsg This message will be dispatched with the result of the 2633 * request. The message data contains three keys: 2634 * - "url" returns the anchor's href attribute. 2635 * - "title" returns the anchor's text. 2636 * - "src" returns the image's src attribute. 2637 */ 2638 public void requestFocusNodeHref(Message hrefMsg) { 2639 checkThread(); 2640 if (hrefMsg == null) { 2641 return; 2642 } 2643 int contentX = viewToContentX(mLastTouchX + mScrollX); 2644 int contentY = viewToContentY(mLastTouchY + mScrollY); 2645 if (nativeHasCursorNode()) { 2646 Rect cursorBounds = nativeGetCursorRingBounds(); 2647 if (!cursorBounds.contains(contentX, contentY)) { 2648 int slop = viewToContentDimension(mNavSlop); 2649 cursorBounds.inset(-slop, -slop); 2650 if (cursorBounds.contains(contentX, contentY)) { 2651 contentX = (int) cursorBounds.centerX(); 2652 contentY = (int) cursorBounds.centerY(); 2653 } 2654 } 2655 } 2656 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2657 contentX, contentY, hrefMsg); 2658 } 2659 2660 /** 2661 * Request the url of the image last touched by the user. msg will be sent 2662 * to its target with a String representing the url as its object. 2663 * 2664 * @param msg This message will be dispatched with the result of the request 2665 * as the data member with "url" as key. The result can be null. 2666 */ 2667 public void requestImageRef(Message msg) { 2668 checkThread(); 2669 if (0 == mNativeClass) return; // client isn't initialized 2670 int contentX = viewToContentX(mLastTouchX + mScrollX); 2671 int contentY = viewToContentY(mLastTouchY + mScrollY); 2672 String ref = nativeImageURI(contentX, contentY); 2673 Bundle data = msg.getData(); 2674 data.putString("url", ref); 2675 msg.setData(data); 2676 msg.sendToTarget(); 2677 } 2678 2679 static int pinLoc(int x, int viewMax, int docMax) { 2680// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2681 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2682 // pin the short document to the top/left of the screen 2683 x = 0; 2684// Log.d(LOGTAG, "--- center " + x); 2685 } else if (x < 0) { 2686 x = 0; 2687// Log.d(LOGTAG, "--- zero"); 2688 } else if (x + viewMax > docMax) { 2689 x = docMax - viewMax; 2690// Log.d(LOGTAG, "--- pin " + x); 2691 } 2692 return x; 2693 } 2694 2695 // Expects x in view coordinates 2696 int pinLocX(int x) { 2697 if (mInOverScrollMode) return x; 2698 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2699 } 2700 2701 // Expects y in view coordinates 2702 int pinLocY(int y) { 2703 if (mInOverScrollMode) return y; 2704 return pinLoc(y, getViewHeightWithTitle(), 2705 computeRealVerticalScrollRange() + getTitleHeight()); 2706 } 2707 2708 /** 2709 * A title bar which is embedded in this WebView, and scrolls along with it 2710 * vertically, but not horizontally. 2711 */ 2712 private View mTitleBar; 2713 2714 /** 2715 * the title bar rendering gravity 2716 */ 2717 private int mTitleGravity; 2718 2719 /** 2720 * Add or remove a title bar to be embedded into the WebView, and scroll 2721 * along with it vertically, while remaining in view horizontally. Pass 2722 * null to remove the title bar from the WebView, and return to drawing 2723 * the WebView normally without translating to account for the title bar. 2724 * @hide 2725 */ 2726 public void setEmbeddedTitleBar(View v) { 2727 if (mTitleBar == v) return; 2728 if (mTitleBar != null) { 2729 removeView(mTitleBar); 2730 } 2731 if (null != v) { 2732 addView(v, new AbsoluteLayout.LayoutParams( 2733 ViewGroup.LayoutParams.MATCH_PARENT, 2734 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2735 } 2736 mTitleBar = v; 2737 } 2738 2739 /** 2740 * Set where to render the embedded title bar 2741 * NO_GRAVITY at the top of the page 2742 * TOP at the top of the screen 2743 * @hide 2744 */ 2745 public void setTitleBarGravity(int gravity) { 2746 mTitleGravity = gravity; 2747 // force refresh 2748 invalidate(); 2749 } 2750 2751 /** 2752 * Given a distance in view space, convert it to content space. Note: this 2753 * does not reflect translation, just scaling, so this should not be called 2754 * with coordinates, but should be called for dimensions like width or 2755 * height. 2756 */ 2757 private int viewToContentDimension(int d) { 2758 return Math.round(d * mZoomManager.getInvScale()); 2759 } 2760 2761 /** 2762 * Given an x coordinate in view space, convert it to content space. Also 2763 * may be used for absolute heights (such as for the WebTextView's 2764 * textSize, which is unaffected by the height of the title bar). 2765 */ 2766 /*package*/ int viewToContentX(int x) { 2767 return viewToContentDimension(x); 2768 } 2769 2770 /** 2771 * Given a y coordinate in view space, convert it to content space. 2772 * Takes into account the height of the title bar if there is one 2773 * embedded into the WebView. 2774 */ 2775 /*package*/ int viewToContentY(int y) { 2776 return viewToContentDimension(y - getTitleHeight()); 2777 } 2778 2779 /** 2780 * Given a x coordinate in view space, convert it to content space. 2781 * Returns the result as a float. 2782 */ 2783 private float viewToContentXf(int x) { 2784 return x * mZoomManager.getInvScale(); 2785 } 2786 2787 /** 2788 * Given a y coordinate in view space, convert it to content space. 2789 * Takes into account the height of the title bar if there is one 2790 * embedded into the WebView. Returns the result as a float. 2791 */ 2792 private float viewToContentYf(int y) { 2793 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2794 } 2795 2796 /** 2797 * Given a distance in content space, convert it to view space. Note: this 2798 * does not reflect translation, just scaling, so this should not be called 2799 * with coordinates, but should be called for dimensions like width or 2800 * height. 2801 */ 2802 /*package*/ int contentToViewDimension(int d) { 2803 return Math.round(d * mZoomManager.getScale()); 2804 } 2805 2806 /** 2807 * Given an x coordinate in content space, convert it to view 2808 * space. 2809 */ 2810 /*package*/ int contentToViewX(int x) { 2811 return contentToViewDimension(x); 2812 } 2813 2814 /** 2815 * Given a y coordinate in content space, convert it to view 2816 * space. Takes into account the height of the title bar. 2817 */ 2818 /*package*/ int contentToViewY(int y) { 2819 return contentToViewDimension(y) + getTitleHeight(); 2820 } 2821 2822 private Rect contentToViewRect(Rect x) { 2823 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2824 contentToViewX(x.right), contentToViewY(x.bottom)); 2825 } 2826 2827 /* To invalidate a rectangle in content coordinates, we need to transform 2828 the rect into view coordinates, so we can then call invalidate(...). 2829 2830 Normally, we would just call contentToView[XY](...), which eventually 2831 calls Math.round(coordinate * mActualScale). However, for invalidates, 2832 we need to account for the slop that occurs with antialiasing. To 2833 address that, we are a little more liberal in the size of the rect that 2834 we invalidate. 2835 2836 This liberal calculation calls floor() for the top/left, and ceil() for 2837 the bottom/right coordinates. This catches the possible extra pixels of 2838 antialiasing that we might have missed with just round(). 2839 */ 2840 2841 // Called by JNI to invalidate the View, given rectangle coordinates in 2842 // content space 2843 private void viewInvalidate(int l, int t, int r, int b) { 2844 final float scale = mZoomManager.getScale(); 2845 final int dy = getTitleHeight(); 2846 invalidate((int)Math.floor(l * scale), 2847 (int)Math.floor(t * scale) + dy, 2848 (int)Math.ceil(r * scale), 2849 (int)Math.ceil(b * scale) + dy); 2850 } 2851 2852 // Called by JNI to invalidate the View after a delay, given rectangle 2853 // coordinates in content space 2854 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2855 final float scale = mZoomManager.getScale(); 2856 final int dy = getTitleHeight(); 2857 postInvalidateDelayed(delay, 2858 (int)Math.floor(l * scale), 2859 (int)Math.floor(t * scale) + dy, 2860 (int)Math.ceil(r * scale), 2861 (int)Math.ceil(b * scale) + dy); 2862 } 2863 2864 private void invalidateContentRect(Rect r) { 2865 viewInvalidate(r.left, r.top, r.right, r.bottom); 2866 } 2867 2868 // stop the scroll animation, and don't let a subsequent fling add 2869 // to the existing velocity 2870 private void abortAnimation() { 2871 mScroller.abortAnimation(); 2872 mLastVelocity = 0; 2873 } 2874 2875 /* call from webcoreview.draw(), so we're still executing in the UI thread 2876 */ 2877 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2878 2879 // premature data from webkit, ignore 2880 if ((w | h) == 0) { 2881 return; 2882 } 2883 2884 // don't abort a scroll animation if we didn't change anything 2885 if (mContentWidth != w || mContentHeight != h) { 2886 // record new dimensions 2887 mContentWidth = w; 2888 mContentHeight = h; 2889 // If history Picture is drawn, don't update scroll. They will be 2890 // updated when we get out of that mode. 2891 if (!mDrawHistory) { 2892 // repin our scroll, taking into account the new content size 2893 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2894 if (!mScroller.isFinished()) { 2895 // We are in the middle of a scroll. Repin the final scroll 2896 // position. 2897 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2898 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2899 } 2900 } 2901 } 2902 contentSizeChanged(updateLayout); 2903 } 2904 2905 // Used to avoid sending many visible rect messages. 2906 private Rect mLastVisibleRectSent = new Rect(); 2907 private Rect mLastGlobalRect = new Rect(); 2908 private Rect mVisibleRect = new Rect(); 2909 private Rect mGlobalVisibleRect = new Rect(); 2910 private Point mScrollOffset = new Point(); 2911 2912 Rect sendOurVisibleRect() { 2913 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2914 calcOurContentVisibleRect(mVisibleRect); 2915 // Rect.equals() checks for null input. 2916 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 2917 if (!mBlockWebkitViewMessages) { 2918 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 2919 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2920 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2921 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 2922 } 2923 mLastVisibleRectSent.set(mVisibleRect); 2924 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2925 } 2926 if (getGlobalVisibleRect(mGlobalVisibleRect) 2927 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 2928 if (DebugFlags.WEB_VIEW) { 2929 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 2930 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 2931 + mGlobalVisibleRect.bottom); 2932 } 2933 // TODO: the global offset is only used by windowRect() 2934 // in ChromeClientAndroid ; other clients such as touch 2935 // and mouse events could return view + screen relative points. 2936 if (!mBlockWebkitViewMessages) { 2937 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 2938 } 2939 mLastGlobalRect.set(mGlobalVisibleRect); 2940 } 2941 return mVisibleRect; 2942 } 2943 2944 private Point mGlobalVisibleOffset = new Point(); 2945 // Sets r to be the visible rectangle of our webview in view coordinates 2946 private void calcOurVisibleRect(Rect r) { 2947 getGlobalVisibleRect(r, mGlobalVisibleOffset); 2948 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 2949 } 2950 2951 // Sets r to be our visible rectangle in content coordinates 2952 private void calcOurContentVisibleRect(Rect r) { 2953 calcOurVisibleRect(r); 2954 r.left = viewToContentX(r.left); 2955 // viewToContentY will remove the total height of the title bar. Add 2956 // the visible height back in to account for the fact that if the title 2957 // bar is partially visible, the part of the visible rect which is 2958 // displaying our content is displaced by that amount. 2959 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2960 r.right = viewToContentX(r.right); 2961 r.bottom = viewToContentY(r.bottom); 2962 } 2963 2964 private Rect mContentVisibleRect = new Rect(); 2965 // Sets r to be our visible rectangle in content coordinates. We use this 2966 // method on the native side to compute the position of the fixed layers. 2967 // Uses floating coordinates (necessary to correctly place elements when 2968 // the scale factor is not 1) 2969 private void calcOurContentVisibleRectF(RectF r) { 2970 calcOurVisibleRect(mContentVisibleRect); 2971 r.left = viewToContentXf(mContentVisibleRect.left); 2972 // viewToContentY will remove the total height of the title bar. Add 2973 // the visible height back in to account for the fact that if the title 2974 // bar is partially visible, the part of the visible rect which is 2975 // displaying our content is displaced by that amount. 2976 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 2977 r.right = viewToContentXf(mContentVisibleRect.right); 2978 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 2979 } 2980 2981 static class ViewSizeData { 2982 int mWidth; 2983 int mHeight; 2984 float mHeightWidthRatio; 2985 int mActualViewHeight; 2986 int mTextWrapWidth; 2987 int mAnchorX; 2988 int mAnchorY; 2989 float mScale; 2990 boolean mIgnoreHeight; 2991 } 2992 2993 /** 2994 * Compute unzoomed width and height, and if they differ from the last 2995 * values we sent, send them to webkit (to be used as new viewport) 2996 * 2997 * @param force ensures that the message is sent to webkit even if the width 2998 * or height has not changed since the last message 2999 * 3000 * @return true if new values were sent 3001 */ 3002 boolean sendViewSizeZoom(boolean force) { 3003 if (mBlockWebkitViewMessages) return false; 3004 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3005 3006 int viewWidth = getViewWidth(); 3007 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3008 // This height could be fixed and be different from actual visible height. 3009 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3010 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3011 // Make the ratio more accurate than (newHeight / newWidth), since the 3012 // latter both are calculated and rounded. 3013 float heightWidthRatio = (float) viewHeight / viewWidth; 3014 /* 3015 * Because the native side may have already done a layout before the 3016 * View system was able to measure us, we have to send a height of 0 to 3017 * remove excess whitespace when we grow our width. This will trigger a 3018 * layout and a change in content size. This content size change will 3019 * mean that contentSizeChanged will either call this method directly or 3020 * indirectly from onSizeChanged. 3021 */ 3022 if (newWidth > mLastWidthSent && mWrapContent) { 3023 newHeight = 0; 3024 heightWidthRatio = 0; 3025 } 3026 // Actual visible content height. 3027 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3028 // Avoid sending another message if the dimensions have not changed. 3029 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3030 actualViewHeight != mLastActualHeightSent) { 3031 ViewSizeData data = new ViewSizeData(); 3032 data.mWidth = newWidth; 3033 data.mHeight = newHeight; 3034 data.mHeightWidthRatio = heightWidthRatio; 3035 data.mActualViewHeight = actualViewHeight; 3036 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3037 data.mScale = mZoomManager.getScale(); 3038 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3039 && !mHeightCanMeasure; 3040 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3041 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3042 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3043 mLastWidthSent = newWidth; 3044 mLastHeightSent = newHeight; 3045 mLastActualHeightSent = actualViewHeight; 3046 mZoomManager.clearDocumentAnchor(); 3047 return true; 3048 } 3049 return false; 3050 } 3051 3052 /** 3053 * Update the double-tap zoom. 3054 */ 3055 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3056 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3057 } 3058 3059 private int computeRealHorizontalScrollRange() { 3060 if (mDrawHistory) { 3061 return mHistoryWidth; 3062 } else { 3063 // to avoid rounding error caused unnecessary scrollbar, use floor 3064 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3065 } 3066 } 3067 3068 @Override 3069 protected int computeHorizontalScrollRange() { 3070 int range = computeRealHorizontalScrollRange(); 3071 3072 // Adjust reported range if overscrolled to compress the scroll bars 3073 final int scrollX = mScrollX; 3074 final int overscrollRight = computeMaxScrollX(); 3075 if (scrollX < 0) { 3076 range -= scrollX; 3077 } else if (scrollX > overscrollRight) { 3078 range += scrollX - overscrollRight; 3079 } 3080 3081 return range; 3082 } 3083 3084 @Override 3085 protected int computeHorizontalScrollOffset() { 3086 return Math.max(mScrollX, 0); 3087 } 3088 3089 private int computeRealVerticalScrollRange() { 3090 if (mDrawHistory) { 3091 return mHistoryHeight; 3092 } else { 3093 // to avoid rounding error caused unnecessary scrollbar, use floor 3094 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3095 } 3096 } 3097 3098 @Override 3099 protected int computeVerticalScrollRange() { 3100 int range = computeRealVerticalScrollRange(); 3101 3102 // Adjust reported range if overscrolled to compress the scroll bars 3103 final int scrollY = mScrollY; 3104 final int overscrollBottom = computeMaxScrollY(); 3105 if (scrollY < 0) { 3106 range -= scrollY; 3107 } else if (scrollY > overscrollBottom) { 3108 range += scrollY - overscrollBottom; 3109 } 3110 3111 return range; 3112 } 3113 3114 @Override 3115 protected int computeVerticalScrollOffset() { 3116 return Math.max(mScrollY - getTitleHeight(), 0); 3117 } 3118 3119 @Override 3120 protected int computeVerticalScrollExtent() { 3121 return getViewHeight(); 3122 } 3123 3124 /** @hide */ 3125 @Override 3126 protected void onDrawVerticalScrollBar(Canvas canvas, 3127 Drawable scrollBar, 3128 int l, int t, int r, int b) { 3129 if (mScrollY < 0) { 3130 t -= mScrollY; 3131 } 3132 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3133 scrollBar.draw(canvas); 3134 } 3135 3136 @Override 3137 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3138 boolean clampedY) { 3139 // Special-case layer scrolling so that we do not trigger normal scroll 3140 // updating. 3141 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3142 scrollLayerTo(scrollX, scrollY); 3143 return; 3144 } 3145 mInOverScrollMode = false; 3146 int maxX = computeMaxScrollX(); 3147 int maxY = computeMaxScrollY(); 3148 if (maxX == 0) { 3149 // do not over scroll x if the page just fits the screen 3150 scrollX = pinLocX(scrollX); 3151 } else if (scrollX < 0 || scrollX > maxX) { 3152 mInOverScrollMode = true; 3153 } 3154 if (scrollY < 0 || scrollY > maxY) { 3155 mInOverScrollMode = true; 3156 } 3157 3158 int oldX = mScrollX; 3159 int oldY = mScrollY; 3160 3161 super.scrollTo(scrollX, scrollY); 3162 3163 if (mOverScrollGlow != null) { 3164 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3165 } 3166 } 3167 3168 /** 3169 * Get the url for the current page. This is not always the same as the url 3170 * passed to WebViewClient.onPageStarted because although the load for 3171 * that url has begun, the current page may not have changed. 3172 * @return The url for the current page. 3173 */ 3174 public String getUrl() { 3175 checkThread(); 3176 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3177 return h != null ? h.getUrl() : null; 3178 } 3179 3180 /** 3181 * Get the original url for the current page. This is not always the same 3182 * as the url passed to WebViewClient.onPageStarted because although the 3183 * load for that url has begun, the current page may not have changed. 3184 * Also, there may have been redirects resulting in a different url to that 3185 * originally requested. 3186 * @return The url that was originally requested for the current page. 3187 */ 3188 public String getOriginalUrl() { 3189 checkThread(); 3190 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3191 return h != null ? h.getOriginalUrl() : null; 3192 } 3193 3194 /** 3195 * Get the title for the current page. This is the title of the current page 3196 * until WebViewClient.onReceivedTitle is called. 3197 * @return The title for the current page. 3198 */ 3199 public String getTitle() { 3200 checkThread(); 3201 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3202 return h != null ? h.getTitle() : null; 3203 } 3204 3205 /** 3206 * Get the favicon for the current page. This is the favicon of the current 3207 * page until WebViewClient.onReceivedIcon is called. 3208 * @return The favicon for the current page. 3209 */ 3210 public Bitmap getFavicon() { 3211 checkThread(); 3212 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3213 return h != null ? h.getFavicon() : null; 3214 } 3215 3216 /** 3217 * Get the touch icon url for the apple-touch-icon <link> element, or 3218 * a URL on this site's server pointing to the standard location of a 3219 * touch icon. 3220 * @hide 3221 */ 3222 public String getTouchIconUrl() { 3223 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3224 return h != null ? h.getTouchIconUrl() : null; 3225 } 3226 3227 /** 3228 * Get the progress for the current page. 3229 * @return The progress for the current page between 0 and 100. 3230 */ 3231 public int getProgress() { 3232 checkThread(); 3233 return mCallbackProxy.getProgress(); 3234 } 3235 3236 /** 3237 * @return the height of the HTML content. 3238 */ 3239 public int getContentHeight() { 3240 checkThread(); 3241 return mContentHeight; 3242 } 3243 3244 /** 3245 * @return the width of the HTML content. 3246 * @hide 3247 */ 3248 public int getContentWidth() { 3249 return mContentWidth; 3250 } 3251 3252 /** 3253 * @hide 3254 */ 3255 public int getPageBackgroundColor() { 3256 return nativeGetBackgroundColor(); 3257 } 3258 3259 /** 3260 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3261 * is a global requests, not restricted to just this webview. This can be 3262 * useful if the application has been paused. 3263 */ 3264 public void pauseTimers() { 3265 checkThread(); 3266 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3267 } 3268 3269 /** 3270 * Resume all layout, parsing, and JavaScript timers for all webviews. 3271 * This will resume dispatching all timers. 3272 */ 3273 public void resumeTimers() { 3274 checkThread(); 3275 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3276 } 3277 3278 /** 3279 * Call this to pause any extra processing associated with this WebView and 3280 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3281 * is taken offscreen, this could be called to reduce unnecessary CPU or 3282 * network traffic. When the WebView is again "active", call onResume(). 3283 * 3284 * Note that this differs from pauseTimers(), which affects all WebViews. 3285 */ 3286 public void onPause() { 3287 checkThread(); 3288 if (!mIsPaused) { 3289 mIsPaused = true; 3290 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3291 // We want to pause the current playing video when switching out 3292 // from the current WebView/tab. 3293 if (mHTML5VideoViewProxy != null) { 3294 mHTML5VideoViewProxy.pauseAndDispatch(); 3295 } 3296 if (mNativeClass != 0) { 3297 nativeSetPauseDrawing(mNativeClass, true); 3298 } 3299 3300 cancelSelectDialog(); 3301 } 3302 } 3303 3304 @Override 3305 protected void onWindowVisibilityChanged(int visibility) { 3306 super.onWindowVisibilityChanged(visibility); 3307 updateDrawingState(); 3308 } 3309 3310 void updateDrawingState() { 3311 if (mNativeClass == 0 || mIsPaused) return; 3312 if (getWindowVisibility() != VISIBLE) { 3313 nativeSetPauseDrawing(mNativeClass, true); 3314 } else if (getVisibility() != VISIBLE) { 3315 nativeSetPauseDrawing(mNativeClass, true); 3316 } else { 3317 nativeSetPauseDrawing(mNativeClass, false); 3318 } 3319 } 3320 3321 /** 3322 * Call this to resume a WebView after a previous call to onPause(). 3323 */ 3324 public void onResume() { 3325 checkThread(); 3326 if (mIsPaused) { 3327 mIsPaused = false; 3328 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3329 if (mNativeClass != 0) { 3330 nativeSetPauseDrawing(mNativeClass, false); 3331 } 3332 } 3333 } 3334 3335 /** 3336 * Returns true if the view is paused, meaning onPause() was called. Calling 3337 * onResume() sets the paused state back to false. 3338 * @hide 3339 */ 3340 public boolean isPaused() { 3341 return mIsPaused; 3342 } 3343 3344 /** 3345 * Call this to inform the view that memory is low so that it can 3346 * free any available memory. 3347 */ 3348 public void freeMemory() { 3349 checkThread(); 3350 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3351 } 3352 3353 /** 3354 * Clear the resource cache. Note that the cache is per-application, so 3355 * this will clear the cache for all WebViews used. 3356 * 3357 * @param includeDiskFiles If false, only the RAM cache is cleared. 3358 */ 3359 public void clearCache(boolean includeDiskFiles) { 3360 checkThread(); 3361 // Note: this really needs to be a static method as it clears cache for all 3362 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3363 // we can't make this static. 3364 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3365 includeDiskFiles ? 1 : 0, 0); 3366 } 3367 3368 /** 3369 * Make sure that clearing the form data removes the adapter from the 3370 * currently focused textfield if there is one. 3371 */ 3372 public void clearFormData() { 3373 checkThread(); 3374 if (inEditingMode()) { 3375 mWebTextView.setAdapterCustom(null); 3376 } 3377 } 3378 3379 /** 3380 * Tell the WebView to clear its internal back/forward list. 3381 */ 3382 public void clearHistory() { 3383 checkThread(); 3384 mCallbackProxy.getBackForwardList().setClearPending(); 3385 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3386 } 3387 3388 /** 3389 * Clear the SSL preferences table stored in response to proceeding with SSL 3390 * certificate errors. 3391 */ 3392 public void clearSslPreferences() { 3393 checkThread(); 3394 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3395 } 3396 3397 /** 3398 * Return the WebBackForwardList for this WebView. This contains the 3399 * back/forward list for use in querying each item in the history stack. 3400 * This is a copy of the private WebBackForwardList so it contains only a 3401 * snapshot of the current state. Multiple calls to this method may return 3402 * different objects. The object returned from this method will not be 3403 * updated to reflect any new state. 3404 */ 3405 public WebBackForwardList copyBackForwardList() { 3406 checkThread(); 3407 return mCallbackProxy.getBackForwardList().clone(); 3408 } 3409 3410 /* 3411 * Highlight and scroll to the next occurance of String in findAll. 3412 * Wraps the page infinitely, and scrolls. Must be called after 3413 * calling findAll. 3414 * 3415 * @param forward Direction to search. 3416 */ 3417 public void findNext(boolean forward) { 3418 checkThread(); 3419 if (0 == mNativeClass) return; // client isn't initialized 3420 nativeFindNext(forward); 3421 } 3422 3423 /* 3424 * Find all instances of find on the page and highlight them. 3425 * @param find String to find. 3426 * @return int The number of occurances of the String "find" 3427 * that were found. 3428 */ 3429 public int findAll(String find) { 3430 checkThread(); 3431 if (0 == mNativeClass) return 0; // client isn't initialized 3432 int result = find != null ? nativeFindAll(find.toLowerCase(), 3433 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3434 invalidate(); 3435 mLastFind = find; 3436 return result; 3437 } 3438 3439 /** 3440 * Start an ActionMode for finding text in this WebView. Only works if this 3441 * WebView is attached to the view system. 3442 * @param text If non-null, will be the initial text to search for. 3443 * Otherwise, the last String searched for in this WebView will 3444 * be used to start. 3445 * @param showIme If true, show the IME, assuming the user will begin typing. 3446 * If false and text is non-null, perform a find all. 3447 * @return boolean True if the find dialog is shown, false otherwise. 3448 */ 3449 public boolean showFindDialog(String text, boolean showIme) { 3450 checkThread(); 3451 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3452 if (getParent() == null || startActionMode(callback) == null) { 3453 // Could not start the action mode, so end Find on page 3454 return false; 3455 } 3456 mCachedOverlappingActionModeHeight = -1; 3457 mFindCallback = callback; 3458 setFindIsUp(true); 3459 mFindCallback.setWebView(this); 3460 if (showIme) { 3461 mFindCallback.showSoftInput(); 3462 } else if (text != null) { 3463 mFindCallback.setText(text); 3464 mFindCallback.findAll(); 3465 return true; 3466 } 3467 if (text == null) { 3468 text = mLastFind; 3469 } 3470 if (text != null) { 3471 mFindCallback.setText(text); 3472 } 3473 return true; 3474 } 3475 3476 /** 3477 * Keep track of the find callback so that we can remove its titlebar if 3478 * necessary. 3479 */ 3480 private FindActionModeCallback mFindCallback; 3481 3482 /** 3483 * Toggle whether the find dialog is showing, for both native and Java. 3484 */ 3485 private void setFindIsUp(boolean isUp) { 3486 mFindIsUp = isUp; 3487 if (0 == mNativeClass) return; // client isn't initialized 3488 nativeSetFindIsUp(isUp); 3489 } 3490 3491 /** 3492 * Return the index of the currently highlighted match. 3493 */ 3494 int findIndex() { 3495 if (0 == mNativeClass) return -1; 3496 return nativeFindIndex(); 3497 } 3498 3499 // Used to know whether the find dialog is open. Affects whether 3500 // or not we draw the highlights for matches. 3501 private boolean mFindIsUp; 3502 3503 // Keep track of the last string sent, so we can search again when find is 3504 // reopened. 3505 private String mLastFind; 3506 3507 /** 3508 * Return the first substring consisting of the address of a physical 3509 * location. Currently, only addresses in the United States are detected, 3510 * and consist of: 3511 * - a house number 3512 * - a street name 3513 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3514 * - a city name 3515 * - a state or territory, either spelled out or two-letter abbr. 3516 * - an optional 5 digit or 9 digit zip code. 3517 * 3518 * All names must be correctly capitalized, and the zip code, if present, 3519 * must be valid for the state. The street type must be a standard USPS 3520 * spelling or abbreviation. The state or territory must also be spelled 3521 * or abbreviated using USPS standards. The house number may not exceed 3522 * five digits. 3523 * @param addr The string to search for addresses. 3524 * 3525 * @return the address, or if no address is found, return null. 3526 */ 3527 public static String findAddress(String addr) { 3528 checkThread(); 3529 return findAddress(addr, false); 3530 } 3531 3532 /** 3533 * @hide 3534 * Return the first substring consisting of the address of a physical 3535 * location. Currently, only addresses in the United States are detected, 3536 * and consist of: 3537 * - a house number 3538 * - a street name 3539 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3540 * - a city name 3541 * - a state or territory, either spelled out or two-letter abbr. 3542 * - an optional 5 digit or 9 digit zip code. 3543 * 3544 * Names are optionally capitalized, and the zip code, if present, 3545 * must be valid for the state. The street type must be a standard USPS 3546 * spelling or abbreviation. The state or territory must also be spelled 3547 * or abbreviated using USPS standards. The house number may not exceed 3548 * five digits. 3549 * @param addr The string to search for addresses. 3550 * @param caseInsensitive addr Set to true to make search ignore case. 3551 * 3552 * @return the address, or if no address is found, return null. 3553 */ 3554 public static String findAddress(String addr, boolean caseInsensitive) { 3555 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3556 } 3557 3558 /* 3559 * Clear the highlighting surrounding text matches created by findAll. 3560 */ 3561 public void clearMatches() { 3562 checkThread(); 3563 if (mNativeClass == 0) 3564 return; 3565 nativeSetFindIsEmpty(); 3566 invalidate(); 3567 } 3568 3569 /** 3570 * Called when the find ActionMode ends. 3571 */ 3572 void notifyFindDialogDismissed() { 3573 mFindCallback = null; 3574 mCachedOverlappingActionModeHeight = -1; 3575 if (mWebViewCore == null) { 3576 return; 3577 } 3578 clearMatches(); 3579 setFindIsUp(false); 3580 // Now that the dialog has been removed, ensure that we scroll to a 3581 // location that is not beyond the end of the page. 3582 pinScrollTo(mScrollX, mScrollY, false, 0); 3583 invalidate(); 3584 } 3585 3586 /** 3587 * Query the document to see if it contains any image references. The 3588 * message object will be dispatched with arg1 being set to 1 if images 3589 * were found and 0 if the document does not reference any images. 3590 * @param response The message that will be dispatched with the result. 3591 */ 3592 public void documentHasImages(Message response) { 3593 checkThread(); 3594 if (response == null) { 3595 return; 3596 } 3597 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3598 } 3599 3600 /** 3601 * Request the scroller to abort any ongoing animation 3602 * 3603 * @hide 3604 */ 3605 public void stopScroll() { 3606 mScroller.forceFinished(true); 3607 mLastVelocity = 0; 3608 } 3609 3610 @Override 3611 public void computeScroll() { 3612 if (mScroller.computeScrollOffset()) { 3613 int oldX = mScrollX; 3614 int oldY = mScrollY; 3615 int x = mScroller.getCurrX(); 3616 int y = mScroller.getCurrY(); 3617 invalidate(); // So we draw again 3618 3619 if (!mScroller.isFinished()) { 3620 int rangeX = computeMaxScrollX(); 3621 int rangeY = computeMaxScrollY(); 3622 int overflingDistance = mOverflingDistance; 3623 3624 // Use the layer's scroll data if needed. 3625 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3626 oldX = mScrollingLayerRect.left; 3627 oldY = mScrollingLayerRect.top; 3628 rangeX = mScrollingLayerRect.right; 3629 rangeY = mScrollingLayerRect.bottom; 3630 // No overscrolling for layers. 3631 overflingDistance = 0; 3632 } 3633 3634 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3635 rangeX, rangeY, 3636 overflingDistance, overflingDistance, false); 3637 3638 if (mOverScrollGlow != null) { 3639 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3640 } 3641 } else { 3642 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3643 mScrollX = x; 3644 mScrollY = y; 3645 } else { 3646 // Update the layer position instead of WebView. 3647 scrollLayerTo(x, y); 3648 } 3649 abortAnimation(); 3650 nativeSetIsScrolling(false); 3651 if (!mBlockWebkitViewMessages) { 3652 WebViewCore.resumePriority(); 3653 if (!mSelectingText) { 3654 WebViewCore.resumeUpdatePicture(mWebViewCore); 3655 } 3656 } 3657 if (oldX != mScrollX || oldY != mScrollY) { 3658 sendOurVisibleRect(); 3659 } 3660 } 3661 } else { 3662 super.computeScroll(); 3663 } 3664 } 3665 3666 private void scrollLayerTo(int x, int y) { 3667 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3668 return; 3669 } 3670 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 3671 mScrollingLayerRect.left = x; 3672 mScrollingLayerRect.top = y; 3673 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 3674 invalidate(); 3675 } 3676 3677 private static int computeDuration(int dx, int dy) { 3678 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3679 int duration = distance * 1000 / STD_SPEED; 3680 return Math.min(duration, MAX_DURATION); 3681 } 3682 3683 // helper to pin the scrollBy parameters (already in view coordinates) 3684 // returns true if the scroll was changed 3685 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3686 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3687 } 3688 // helper to pin the scrollTo parameters (already in view coordinates) 3689 // returns true if the scroll was changed 3690 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3691 x = pinLocX(x); 3692 y = pinLocY(y); 3693 int dx = x - mScrollX; 3694 int dy = y - mScrollY; 3695 3696 if ((dx | dy) == 0) { 3697 return false; 3698 } 3699 abortAnimation(); 3700 if (animate) { 3701 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3702 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3703 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3704 awakenScrollBars(mScroller.getDuration()); 3705 invalidate(); 3706 } else { 3707 scrollTo(x, y); 3708 } 3709 return true; 3710 } 3711 3712 // Scale from content to view coordinates, and pin. 3713 // Also called by jni webview.cpp 3714 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3715 if (mDrawHistory) { 3716 // disallow WebView to change the scroll position as History Picture 3717 // is used in the view system. 3718 // TODO: as we switchOutDrawHistory when trackball or navigation 3719 // keys are hit, this should be safe. Right? 3720 return false; 3721 } 3722 cx = contentToViewDimension(cx); 3723 cy = contentToViewDimension(cy); 3724 if (mHeightCanMeasure) { 3725 // move our visible rect according to scroll request 3726 if (cy != 0) { 3727 Rect tempRect = new Rect(); 3728 calcOurVisibleRect(tempRect); 3729 tempRect.offset(cx, cy); 3730 requestRectangleOnScreen(tempRect); 3731 } 3732 // FIXME: We scroll horizontally no matter what because currently 3733 // ScrollView and ListView will not scroll horizontally. 3734 // FIXME: Why do we only scroll horizontally if there is no 3735 // vertical scroll? 3736// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3737 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3738 } else { 3739 return pinScrollBy(cx, cy, animate, 0); 3740 } 3741 } 3742 3743 /** 3744 * Called by CallbackProxy when the page starts loading. 3745 * @param url The URL of the page which has started loading. 3746 */ 3747 /* package */ void onPageStarted(String url) { 3748 // every time we start a new page, we want to reset the 3749 // WebView certificate: if the new site is secure, we 3750 // will reload it and get a new certificate set; 3751 // if the new site is not secure, the certificate must be 3752 // null, and that will be the case 3753 setCertificate(null); 3754 3755 // reset the flag since we set to true in if need after 3756 // loading is see onPageFinished(Url) 3757 mAccessibilityScriptInjected = false; 3758 } 3759 3760 /** 3761 * Called by CallbackProxy when the page finishes loading. 3762 * @param url The URL of the page which has finished loading. 3763 */ 3764 /* package */ void onPageFinished(String url) { 3765 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3766 // If the user is now on a different page, or has scrolled the page 3767 // past the point where the title bar is offscreen, ignore the 3768 // scroll request. 3769 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3770 && mScrollX == 0 && mScrollY == 0) { 3771 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3772 SLIDE_TITLE_DURATION); 3773 } 3774 mPageThatNeedsToSlideTitleBarOffScreen = null; 3775 } 3776 mZoomManager.onPageFinished(url); 3777 injectAccessibilityForUrl(url); 3778 } 3779 3780 /** 3781 * This method injects accessibility in the loaded document if accessibility 3782 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3783 * If no URL specific script is found or JavaScript is disabled we fallback to 3784 * the default {@link AccessibilityInjector} implementation. 3785 * </p> 3786 * If the URL has the "axs" paramter set to 1 it has already done the 3787 * script injection so we do nothing. If the parameter is set to 0 3788 * the URL opts out accessibility script injection so we fall back to 3789 * the default {@link AccessibilityInjector}. 3790 * </p> 3791 * Note: If the user has not opted-in the accessibility script injection no scripts 3792 * are injected rather the default {@link AccessibilityInjector} implementation 3793 * is used. 3794 * 3795 * @param url The URL loaded by this {@link WebView}. 3796 */ 3797 private void injectAccessibilityForUrl(String url) { 3798 if (mWebViewCore == null) { 3799 return; 3800 } 3801 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3802 3803 if (!accessibilityManager.isEnabled()) { 3804 // it is possible that accessibility was turned off between reloads 3805 ensureAccessibilityScriptInjectorInstance(false); 3806 return; 3807 } 3808 3809 if (!getSettings().getJavaScriptEnabled()) { 3810 // no JS so we fallback to the basic buil-in support 3811 ensureAccessibilityScriptInjectorInstance(true); 3812 return; 3813 } 3814 3815 // check the URL "axs" parameter to choose appropriate action 3816 int axsParameterValue = getAxsUrlParameterValue(url); 3817 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3818 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3819 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3820 if (onDeviceScriptInjectionEnabled) { 3821 ensureAccessibilityScriptInjectorInstance(false); 3822 // neither script injected nor script injection opted out => we inject 3823 loadUrl(getScreenReaderInjectingJs()); 3824 // TODO: Set this flag after successfull script injection. Maybe upon injection 3825 // the chooser should update the meta tag and we check it to declare success 3826 mAccessibilityScriptInjected = true; 3827 } else { 3828 // injection disabled so we fallback to the basic built-in support 3829 ensureAccessibilityScriptInjectorInstance(true); 3830 } 3831 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3832 // injection opted out so we fallback to the basic buil-in support 3833 ensureAccessibilityScriptInjectorInstance(true); 3834 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3835 ensureAccessibilityScriptInjectorInstance(false); 3836 // the URL provides accessibility but we still need to add our generic script 3837 loadUrl(getScreenReaderInjectingJs()); 3838 } else { 3839 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3840 } 3841 } 3842 3843 /** 3844 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3845 * 3846 * @param present True to ensure an insance, false to ensure no instance. 3847 */ 3848 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3849 if (present) { 3850 if (mAccessibilityInjector == null) { 3851 mAccessibilityInjector = new AccessibilityInjector(this); 3852 } 3853 } else { 3854 mAccessibilityInjector = null; 3855 } 3856 } 3857 3858 /** 3859 * Gets JavaScript that injects a screen-reader. 3860 * 3861 * @return The JavaScript snippet. 3862 */ 3863 private String getScreenReaderInjectingJs() { 3864 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 3865 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 3866 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 3867 } 3868 3869 /** 3870 * Gets the "axs" URL parameter value. 3871 * 3872 * @param url A url to fetch the paramter from. 3873 * @return The parameter value if such, -1 otherwise. 3874 */ 3875 private int getAxsUrlParameterValue(String url) { 3876 if (mMatchAxsUrlParameterPattern == null) { 3877 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3878 } 3879 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3880 if (matcher.find()) { 3881 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3882 return Integer.parseInt(keyValuePair.split("=")[1]); 3883 } 3884 return -1; 3885 } 3886 3887 /** 3888 * The URL of a page that sent a message to scroll the title bar off screen. 3889 * 3890 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3891 * title bar off the screen. Sometimes, the scroll position is set before 3892 * the page finishes loading. Rather than scrolling while the page is still 3893 * loading, keep track of the URL and new scroll position so we can perform 3894 * the scroll once the page finishes loading. 3895 */ 3896 private String mPageThatNeedsToSlideTitleBarOffScreen; 3897 3898 /** 3899 * The destination Y scroll position to be used when the page finishes 3900 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3901 */ 3902 private int mYDistanceToSlideTitleOffScreen; 3903 3904 // scale from content to view coordinates, and pin 3905 // return true if pin caused the final x/y different than the request cx/cy, 3906 // and a future scroll may reach the request cx/cy after our size has 3907 // changed 3908 // return false if the view scroll to the exact position as it is requested, 3909 // where negative numbers are taken to mean 0 3910 private boolean setContentScrollTo(int cx, int cy) { 3911 if (mDrawHistory) { 3912 // disallow WebView to change the scroll position as History Picture 3913 // is used in the view system. 3914 // One known case where this is called is that WebCore tries to 3915 // restore the scroll position. As history Picture already uses the 3916 // saved scroll position, it is ok to skip this. 3917 return false; 3918 } 3919 int vx; 3920 int vy; 3921 if ((cx | cy) == 0) { 3922 // If the page is being scrolled to (0,0), do not add in the title 3923 // bar's height, and simply scroll to (0,0). (The only other work 3924 // in contentToView_ is to multiply, so this would not change 0.) 3925 vx = 0; 3926 vy = 0; 3927 } else { 3928 vx = contentToViewX(cx); 3929 vy = contentToViewY(cy); 3930 } 3931// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3932// vx + " " + vy + "]"); 3933 // Some mobile sites attempt to scroll the title bar off the page by 3934 // scrolling to (0,1). If we are at the top left corner of the 3935 // page, assume this is an attempt to scroll off the title bar, and 3936 // animate the title bar off screen slowly enough that the user can see 3937 // it. 3938 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3939 && mTitleBar != null) { 3940 // FIXME: 100 should be defined somewhere as our max progress. 3941 if (getProgress() < 100) { 3942 // Wait to scroll the title bar off screen until the page has 3943 // finished loading. Keep track of the URL and the destination 3944 // Y position 3945 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3946 mYDistanceToSlideTitleOffScreen = vy; 3947 } else { 3948 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3949 } 3950 // Since we are animating, we have not yet reached the desired 3951 // scroll position. Do not return true to request another attempt 3952 return false; 3953 } 3954 pinScrollTo(vx, vy, false, 0); 3955 // If the request was to scroll to a negative coordinate, treat it as if 3956 // it was a request to scroll to 0 3957 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3958 return true; 3959 } else { 3960 return false; 3961 } 3962 } 3963 3964 // scale from content to view coordinates, and pin 3965 private void spawnContentScrollTo(int cx, int cy) { 3966 if (mDrawHistory) { 3967 // disallow WebView to change the scroll position as History Picture 3968 // is used in the view system. 3969 return; 3970 } 3971 int vx = contentToViewX(cx); 3972 int vy = contentToViewY(cy); 3973 pinScrollTo(vx, vy, true, 0); 3974 } 3975 3976 /** 3977 * These are from webkit, and are in content coordinate system (unzoomed) 3978 */ 3979 private void contentSizeChanged(boolean updateLayout) { 3980 // suppress 0,0 since we usually see real dimensions soon after 3981 // this avoids drawing the prev content in a funny place. If we find a 3982 // way to consolidate these notifications, this check may become 3983 // obsolete 3984 if ((mContentWidth | mContentHeight) == 0) { 3985 return; 3986 } 3987 3988 if (mHeightCanMeasure) { 3989 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3990 || updateLayout) { 3991 requestLayout(); 3992 } 3993 } else if (mWidthCanMeasure) { 3994 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3995 || updateLayout) { 3996 requestLayout(); 3997 } 3998 } else { 3999 // If we don't request a layout, try to send our view size to the 4000 // native side to ensure that WebCore has the correct dimensions. 4001 sendViewSizeZoom(false); 4002 } 4003 } 4004 4005 /** 4006 * Set the WebViewClient that will receive various notifications and 4007 * requests. This will replace the current handler. 4008 * @param client An implementation of WebViewClient. 4009 */ 4010 public void setWebViewClient(WebViewClient client) { 4011 checkThread(); 4012 mCallbackProxy.setWebViewClient(client); 4013 } 4014 4015 /** 4016 * Gets the WebViewClient 4017 * @return the current WebViewClient instance. 4018 * 4019 *@hide pending API council approval. 4020 */ 4021 public WebViewClient getWebViewClient() { 4022 return mCallbackProxy.getWebViewClient(); 4023 } 4024 4025 /** 4026 * Register the interface to be used when content can not be handled by 4027 * the rendering engine, and should be downloaded instead. This will replace 4028 * the current handler. 4029 * @param listener An implementation of DownloadListener. 4030 */ 4031 public void setDownloadListener(DownloadListener listener) { 4032 checkThread(); 4033 mCallbackProxy.setDownloadListener(listener); 4034 } 4035 4036 /** 4037 * Set the chrome handler. This is an implementation of WebChromeClient for 4038 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4039 * This will replace the current handler. 4040 * @param client An implementation of WebChromeClient. 4041 */ 4042 public void setWebChromeClient(WebChromeClient client) { 4043 checkThread(); 4044 mCallbackProxy.setWebChromeClient(client); 4045 } 4046 4047 /** 4048 * Gets the chrome handler. 4049 * @return the current WebChromeClient instance. 4050 * 4051 * @hide API council approval. 4052 */ 4053 public WebChromeClient getWebChromeClient() { 4054 return mCallbackProxy.getWebChromeClient(); 4055 } 4056 4057 /** 4058 * Set the back/forward list client. This is an implementation of 4059 * WebBackForwardListClient for handling new items and changes in the 4060 * history index. 4061 * @param client An implementation of WebBackForwardListClient. 4062 * {@hide} 4063 */ 4064 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4065 mCallbackProxy.setWebBackForwardListClient(client); 4066 } 4067 4068 /** 4069 * Gets the WebBackForwardListClient. 4070 * {@hide} 4071 */ 4072 public WebBackForwardListClient getWebBackForwardListClient() { 4073 return mCallbackProxy.getWebBackForwardListClient(); 4074 } 4075 4076 /** 4077 * Set the Picture listener. This is an interface used to receive 4078 * notifications of a new Picture. 4079 * @param listener An implementation of WebView.PictureListener. 4080 * @deprecated This method is now obsolete. 4081 */ 4082 @Deprecated 4083 public void setPictureListener(PictureListener listener) { 4084 checkThread(); 4085 mPictureListener = listener; 4086 } 4087 4088 /** 4089 * {@hide} 4090 */ 4091 /* FIXME: Debug only! Remove for SDK! */ 4092 public void externalRepresentation(Message callback) { 4093 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4094 } 4095 4096 /** 4097 * {@hide} 4098 */ 4099 /* FIXME: Debug only! Remove for SDK! */ 4100 public void documentAsText(Message callback) { 4101 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4102 } 4103 4104 /** 4105 * This method injects the supplied Java object into the WebView. The 4106 * object is injected into the JavaScript context of the main frame, using 4107 * the supplied name. This allows the Java object to be accessed from 4108 * JavaScript. Note that that injected objects will not appear in 4109 * JavaScript until the page is next (re)loaded. For example: 4110 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4111 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4112 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4113 * <p><strong>IMPORTANT:</strong> 4114 * <ul> 4115 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4116 * the host application. This is a powerful feature, but also presents a 4117 * security risk. Use of this method in a WebView containing untrusted 4118 * content could allow an attacker to manipulate the host application in 4119 * unintended ways, executing Java code with the permissions of the host 4120 * application. Use extreme care when using this method in a WebView which 4121 * could contain untrusted content. 4122 * <li> JavaScript interacts with Java object on a private, background 4123 * thread of the WebView. Care is therefore required to maintain thread 4124 * safety.</li> 4125 * </ul></p> 4126 * @param object The Java object to inject into the WebView's JavaScript 4127 * context. Null values are ignored. 4128 * @param name The name used to expose the instance in JavaScript. 4129 */ 4130 public void addJavascriptInterface(Object object, String name) { 4131 checkThread(); 4132 if (object == null) { 4133 return; 4134 } 4135 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4136 arg.mObject = object; 4137 arg.mInterfaceName = name; 4138 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4139 } 4140 4141 /** 4142 * Removes a previously added JavaScript interface with the given name. 4143 * @param interfaceName The name of the interface to remove. 4144 */ 4145 public void removeJavascriptInterface(String interfaceName) { 4146 checkThread(); 4147 if (mWebViewCore != null) { 4148 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4149 arg.mInterfaceName = interfaceName; 4150 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4151 } 4152 } 4153 4154 /** 4155 * Return the WebSettings object used to control the settings for this 4156 * WebView. 4157 * @return A WebSettings object that can be used to control this WebView's 4158 * settings. 4159 */ 4160 public WebSettings getSettings() { 4161 checkThread(); 4162 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4163 } 4164 4165 /** 4166 * Return the list of currently loaded plugins. 4167 * @return The list of currently loaded plugins. 4168 * 4169 * @hide 4170 * @deprecated This was used for Gears, which has been deprecated. 4171 */ 4172 @Deprecated 4173 public static synchronized PluginList getPluginList() { 4174 checkThread(); 4175 return new PluginList(); 4176 } 4177 4178 /** 4179 * @hide 4180 * @deprecated This was used for Gears, which has been deprecated. 4181 */ 4182 @Deprecated 4183 public void refreshPlugins(boolean reloadOpenPages) { 4184 checkThread(); 4185 } 4186 4187 //------------------------------------------------------------------------- 4188 // Override View methods 4189 //------------------------------------------------------------------------- 4190 4191 @Override 4192 protected void finalize() throws Throwable { 4193 try { 4194 if (mNativeClass != 0) { 4195 mPrivateHandler.post(new Runnable() { 4196 @Override 4197 public void run() { 4198 destroy(); 4199 } 4200 }); 4201 } 4202 } finally { 4203 super.finalize(); 4204 } 4205 } 4206 4207 @Override 4208 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4209 if (child == mTitleBar) { 4210 // When drawing the title bar, move it horizontally to always show 4211 // at the top of the WebView. 4212 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4213 int newTop = 0; 4214 if (mTitleGravity == Gravity.NO_GRAVITY) { 4215 newTop = Math.min(0, mScrollY); 4216 } else if (mTitleGravity == Gravity.TOP) { 4217 newTop = mScrollY; 4218 } 4219 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4220 mTitleBar.setTop(newTop); 4221 } 4222 return super.drawChild(canvas, child, drawingTime); 4223 } 4224 4225 private void drawContent(Canvas canvas, boolean drawRings) { 4226 drawCoreAndCursorRing(canvas, mBackgroundColor, 4227 mDrawCursorRing && drawRings); 4228 } 4229 4230 /** 4231 * Draw the background when beyond bounds 4232 * @param canvas Canvas to draw into 4233 */ 4234 private void drawOverScrollBackground(Canvas canvas) { 4235 if (mOverScrollBackground == null) { 4236 mOverScrollBackground = new Paint(); 4237 Bitmap bm = BitmapFactory.decodeResource( 4238 mContext.getResources(), 4239 com.android.internal.R.drawable.status_bar_background); 4240 mOverScrollBackground.setShader(new BitmapShader(bm, 4241 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4242 mOverScrollBorder = new Paint(); 4243 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4244 mOverScrollBorder.setStrokeWidth(0); 4245 mOverScrollBorder.setColor(0xffbbbbbb); 4246 } 4247 4248 int top = 0; 4249 int right = computeRealHorizontalScrollRange(); 4250 int bottom = top + computeRealVerticalScrollRange(); 4251 // first draw the background and anchor to the top of the view 4252 canvas.save(); 4253 canvas.translate(mScrollX, mScrollY); 4254 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4255 - mScrollY, Region.Op.DIFFERENCE); 4256 canvas.drawPaint(mOverScrollBackground); 4257 canvas.restore(); 4258 // then draw the border 4259 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4260 // next clip the region for the content 4261 canvas.clipRect(0, top, right, bottom); 4262 } 4263 4264 @Override 4265 protected void onDraw(Canvas canvas) { 4266 if (inFullScreenMode()) { 4267 return; // no need to draw anything if we aren't visible. 4268 } 4269 // if mNativeClass is 0, the WebView is either destroyed or not 4270 // initialized. In either case, just draw the background color and return 4271 if (mNativeClass == 0) { 4272 canvas.drawColor(mBackgroundColor); 4273 return; 4274 } 4275 4276 // if both mContentWidth and mContentHeight are 0, it means there is no 4277 // valid Picture passed to WebView yet. This can happen when WebView 4278 // just starts. Draw the background and return. 4279 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4280 canvas.drawColor(mBackgroundColor); 4281 return; 4282 } 4283 4284 if (canvas.isHardwareAccelerated()) { 4285 if (mIncrementEGLContextHack == false) { 4286 mIncrementEGLContextHack = true; 4287 EGL10 egl = (EGL10) EGLContext.getEGL(); 4288 EGLDisplay eglDisplay = egl.eglGetDisplay(EGL_DEFAULT_DISPLAY); 4289 int[] version = new int[2]; 4290 egl.eglInitialize(eglDisplay, version); 4291 } 4292 mZoomManager.setHardwareAccelerated(); 4293 } 4294 4295 int saveCount = canvas.save(); 4296 if (mInOverScrollMode && !getSettings() 4297 .getUseWebViewBackgroundForOverscrollBackground()) { 4298 drawOverScrollBackground(canvas); 4299 } 4300 if (mTitleBar != null) { 4301 canvas.translate(0, getTitleHeight()); 4302 } 4303 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4304 && (mTouchMode == TOUCH_INIT_MODE 4305 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4306 || mTouchMode == TOUCH_SHORTPRESS_MODE 4307 || mTouchMode == TOUCH_DONE_MODE); 4308 boolean drawNativeRings = !drawJavaRings; 4309 if (USE_WEBKIT_RINGS) { 4310 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4311 } 4312 drawContent(canvas, drawNativeRings); 4313 canvas.restoreToCount(saveCount); 4314 4315 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4316 invalidate(); 4317 } 4318 mWebViewCore.signalRepaintDone(); 4319 4320 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4321 invalidate(); 4322 } 4323 4324 // paint the highlight in the end 4325 if (drawJavaRings) { 4326 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4327 if (delay < ViewConfiguration.getTapTimeout()) { 4328 Rect r = mTouchHighlightRegion.getBounds(); 4329 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4330 } else { 4331 if (mTouchHightlightPaint == null) { 4332 mTouchHightlightPaint = new Paint(); 4333 mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR); 4334 } 4335 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4336 Rect r = new Rect(); 4337 while (iter.next(r)) { 4338 canvas.drawRect(r, mTouchHightlightPaint); 4339 } 4340 } 4341 } 4342 if (DEBUG_TOUCH_HIGHLIGHT) { 4343 if (getSettings().getNavDump()) { 4344 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4345 if (mTouchCrossHairColor == null) { 4346 mTouchCrossHairColor = new Paint(); 4347 mTouchCrossHairColor.setColor(Color.RED); 4348 } 4349 canvas.drawLine(mTouchHighlightX - mNavSlop, 4350 mTouchHighlightY - mNavSlop, mTouchHighlightX 4351 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4352 + 1, mTouchCrossHairColor); 4353 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4354 mTouchHighlightY - mNavSlop, mTouchHighlightX 4355 - mNavSlop, 4356 mTouchHighlightY + mNavSlop + 1, 4357 mTouchCrossHairColor); 4358 } 4359 } 4360 } 4361 } 4362 4363 private void removeTouchHighlight() { 4364 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4365 mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS); 4366 setTouchHighlightRects(null); 4367 } 4368 4369 @Override 4370 public void setLayoutParams(ViewGroup.LayoutParams params) { 4371 if (params.height == LayoutParams.WRAP_CONTENT) { 4372 mWrapContent = true; 4373 } 4374 super.setLayoutParams(params); 4375 } 4376 4377 @Override 4378 public boolean performLongClick() { 4379 // performLongClick() is the result of a delayed message. If we switch 4380 // to windows overview, the WebView will be temporarily removed from the 4381 // view system. In that case, do nothing. 4382 if (getParent() == null) return false; 4383 4384 // A multi-finger gesture can look like a long press; make sure we don't take 4385 // long press actions if we're scaling. 4386 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4387 if (detector != null && detector.isInProgress()) { 4388 return false; 4389 } 4390 4391 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4392 // Send the click so that the textfield is in focus 4393 centerKeyPressOnTextField(); 4394 rebuildWebTextView(); 4395 } else { 4396 clearTextEntry(); 4397 } 4398 if (inEditingMode()) { 4399 // Since we just called rebuildWebTextView, the layout is not set 4400 // properly. Update it so it can correctly find the word to select. 4401 mWebTextView.ensureLayout(); 4402 // Provide a touch down event to WebTextView, which will allow it 4403 // to store the location to use in performLongClick. 4404 AbsoluteLayout.LayoutParams params 4405 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4406 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4407 mLastTouchTime, MotionEvent.ACTION_DOWN, 4408 mLastTouchX - params.x + mScrollX, 4409 mLastTouchY - params.y + mScrollY, 0); 4410 mWebTextView.dispatchTouchEvent(fake); 4411 return mWebTextView.performLongClick(); 4412 } 4413 if (mSelectingText) return false; // long click does nothing on selection 4414 /* if long click brings up a context menu, the super function 4415 * returns true and we're done. Otherwise, nothing happened when 4416 * the user clicked. */ 4417 if (super.performLongClick()) { 4418 return true; 4419 } 4420 /* In the case where the application hasn't already handled the long 4421 * click action, look for a word under the click. If one is found, 4422 * animate the text selection into view. 4423 * FIXME: no animation code yet */ 4424 final boolean isSelecting = selectText(); 4425 if (isSelecting) { 4426 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4427 } 4428 return isSelecting; 4429 } 4430 4431 /** 4432 * Select the word at the last click point. 4433 * 4434 * @hide pending API council approval 4435 */ 4436 public boolean selectText() { 4437 int x = viewToContentX(mLastTouchX + mScrollX); 4438 int y = viewToContentY(mLastTouchY + mScrollY); 4439 return selectText(x, y); 4440 } 4441 4442 /** 4443 * Select the word at the indicated content coordinates. 4444 */ 4445 boolean selectText(int x, int y) { 4446 if (!setUpSelect(true, x, y)) { 4447 return false; 4448 } 4449 nativeSetExtendSelection(); 4450 mDrawSelectionPointer = false; 4451 mTouchMode = TOUCH_DRAG_MODE; 4452 return true; 4453 } 4454 4455 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4456 4457 @Override 4458 protected void onConfigurationChanged(Configuration newConfig) { 4459 mCachedOverlappingActionModeHeight = -1; 4460 if (mSelectingText && mOrientation != newConfig.orientation) { 4461 selectionDone(); 4462 } 4463 mOrientation = newConfig.orientation; 4464 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4465 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4466 } 4467 } 4468 4469 /** 4470 * Keep track of the Callback so we can end its ActionMode or remove its 4471 * titlebar. 4472 */ 4473 private SelectActionModeCallback mSelectCallback; 4474 4475 // These values are possible options for didUpdateWebTextViewDimensions. 4476 private static final int FULLY_ON_SCREEN = 0; 4477 private static final int INTERSECTS_SCREEN = 1; 4478 private static final int ANYWHERE = 2; 4479 4480 /** 4481 * Check to see if the focused textfield/textarea is still on screen. If it 4482 * is, update the the dimensions and location of WebTextView. Otherwise, 4483 * remove the WebTextView. Should be called when the zoom level changes. 4484 * @param intersection How to determine whether the textfield/textarea is 4485 * still on screen. 4486 * @return boolean True if the textfield/textarea is still on screen and the 4487 * dimensions/location of WebTextView have been updated. 4488 */ 4489 private boolean didUpdateWebTextViewDimensions(int intersection) { 4490 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4491 Rect vBox = contentToViewRect(contentBounds); 4492 Rect visibleRect = new Rect(); 4493 calcOurVisibleRect(visibleRect); 4494 offsetByLayerScrollPosition(vBox); 4495 // If the textfield is on screen, place the WebTextView in 4496 // its new place, accounting for our new scroll/zoom values, 4497 // and adjust its textsize. 4498 boolean onScreen; 4499 switch (intersection) { 4500 case FULLY_ON_SCREEN: 4501 onScreen = visibleRect.contains(vBox); 4502 break; 4503 case INTERSECTS_SCREEN: 4504 onScreen = Rect.intersects(visibleRect, vBox); 4505 break; 4506 case ANYWHERE: 4507 onScreen = true; 4508 break; 4509 default: 4510 throw new AssertionError( 4511 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4512 } 4513 if (onScreen) { 4514 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4515 vBox.height()); 4516 mWebTextView.updateTextSize(); 4517 updateWebTextViewPadding(); 4518 return true; 4519 } else { 4520 // The textfield is now off screen. The user probably 4521 // was not zooming to see the textfield better. Remove 4522 // the WebTextView. If the user types a key, and the 4523 // textfield is still in focus, we will reconstruct 4524 // the WebTextView and scroll it back on screen. 4525 mWebTextView.remove(); 4526 return false; 4527 } 4528 } 4529 4530 private void offsetByLayerScrollPosition(Rect box) { 4531 if ((mCurrentScrollingLayerId != 0) 4532 && (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) { 4533 box.offsetTo(box.left - mScrollingLayerRect.left, 4534 box.top - mScrollingLayerRect.top); 4535 } 4536 } 4537 4538 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4539 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4540 if (mNativeClass == 0) 4541 return; 4542 nativeSetBaseLayer(mNativeClass, layer, invalRegion, showVisualIndicator, 4543 isPictureAfterFirstLayout, registerPageSwapCallback); 4544 if (mHTML5VideoViewProxy != null) { 4545 mHTML5VideoViewProxy.setBaseLayer(layer); 4546 } 4547 } 4548 4549 int getBaseLayer() { 4550 if (mNativeClass == 0) { 4551 return 0; 4552 } 4553 return nativeGetBaseLayer(); 4554 } 4555 4556 private void onZoomAnimationStart() { 4557 // If it is in password mode, turn it off so it does not draw misplaced. 4558 if (inEditingMode()) { 4559 mWebTextView.setVisibility(INVISIBLE); 4560 } 4561 } 4562 4563 private void onZoomAnimationEnd() { 4564 // adjust the edit text view if needed 4565 if (inEditingMode() 4566 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4567 // If it is a password field, start drawing the WebTextView once 4568 // again. 4569 mWebTextView.setVisibility(VISIBLE); 4570 } 4571 } 4572 4573 void onFixedLengthZoomAnimationStart() { 4574 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4575 onZoomAnimationStart(); 4576 } 4577 4578 void onFixedLengthZoomAnimationEnd() { 4579 if (!mBlockWebkitViewMessages && !mSelectingText) { 4580 WebViewCore.resumeUpdatePicture(mWebViewCore); 4581 } 4582 onZoomAnimationEnd(); 4583 } 4584 4585 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4586 Paint.DITHER_FLAG | 4587 Paint.SUBPIXEL_TEXT_FLAG; 4588 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4589 Paint.DITHER_FLAG; 4590 4591 private final DrawFilter mZoomFilter = 4592 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4593 // If we need to trade better quality for speed, set mScrollFilter to null 4594 private final DrawFilter mScrollFilter = 4595 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4596 4597 private void drawCoreAndCursorRing(Canvas canvas, int color, 4598 boolean drawCursorRing) { 4599 if (mDrawHistory) { 4600 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4601 canvas.drawPicture(mHistoryPicture); 4602 return; 4603 } 4604 if (mNativeClass == 0) return; 4605 4606 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4607 boolean animateScroll = ((!mScroller.isFinished() 4608 || mVelocityTracker != null) 4609 && (mTouchMode != TOUCH_DRAG_MODE || 4610 mHeldMotionless != MOTIONLESS_TRUE)) 4611 || mDeferTouchMode == TOUCH_DRAG_MODE; 4612 if (mTouchMode == TOUCH_DRAG_MODE) { 4613 if (mHeldMotionless == MOTIONLESS_PENDING) { 4614 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4615 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4616 mHeldMotionless = MOTIONLESS_FALSE; 4617 } 4618 if (mHeldMotionless == MOTIONLESS_FALSE) { 4619 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4620 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4621 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4622 .obtainMessage(AWAKEN_SCROLL_BARS), 4623 ViewConfiguration.getScrollDefaultDelay()); 4624 mHeldMotionless = MOTIONLESS_PENDING; 4625 } 4626 } 4627 int saveCount = canvas.save(); 4628 if (animateZoom) { 4629 mZoomManager.animateZoom(canvas); 4630 } else if (!canvas.isHardwareAccelerated()) { 4631 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4632 } 4633 4634 boolean UIAnimationsRunning = false; 4635 // Currently for each draw we compute the animation values; 4636 // We may in the future decide to do that independently. 4637 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 4638 && nativeEvaluateLayersAnimations(mNativeClass)) { 4639 UIAnimationsRunning = true; 4640 // If we have unfinished (or unstarted) animations, 4641 // we ask for a repaint. We only need to do this in software 4642 // rendering (with hardware rendering we already have a different 4643 // method of requesting a repaint) 4644 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 4645 invalidate(); 4646 } 4647 4648 // decide which adornments to draw 4649 int extras = DRAW_EXTRAS_NONE; 4650 if (mFindIsUp) { 4651 extras = DRAW_EXTRAS_FIND; 4652 } else if (mSelectingText && (!USE_JAVA_TEXT_SELECTION || DEBUG_TEXT_HANDLES)) { 4653 extras = DRAW_EXTRAS_SELECTION; 4654 nativeSetSelectionPointer(mNativeClass, 4655 mDrawSelectionPointer, 4656 mZoomManager.getInvScale(), mSelectX, mSelectY - getTitleHeight()); 4657 } else if (drawCursorRing) { 4658 extras = DRAW_EXTRAS_CURSOR_RING; 4659 } 4660 if (DebugFlags.WEB_VIEW) { 4661 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4662 + " mSelectingText=" + mSelectingText 4663 + " nativePageShouldHandleShiftAndArrows()=" 4664 + nativePageShouldHandleShiftAndArrows() 4665 + " animateZoom=" + animateZoom 4666 + " extras=" + extras); 4667 } 4668 4669 calcOurContentVisibleRectF(mVisibleContentRect); 4670 if (canvas.isHardwareAccelerated()) { 4671 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4672 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4673 4674 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4675 viewRectViewport, mVisibleContentRect, getScale(), extras); 4676 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4677 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4678 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4679 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4680 } 4681 4682 } else { 4683 DrawFilter df = null; 4684 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4685 df = mZoomFilter; 4686 } else if (animateScroll) { 4687 df = mScrollFilter; 4688 } 4689 canvas.setDrawFilter(df); 4690 // XXX: Revisit splitting content. Right now it causes a 4691 // synchronization problem with layers. 4692 int content = nativeDraw(canvas, mVisibleContentRect, color, 4693 extras, false); 4694 canvas.setDrawFilter(null); 4695 if (!mBlockWebkitViewMessages && content != 0) { 4696 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4697 } 4698 } 4699 4700 canvas.restoreToCount(saveCount); 4701 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4702 drawTextSelectionHandles(canvas); 4703 } 4704 4705 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4706 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4707 mTouchMode = TOUCH_SHORTPRESS_MODE; 4708 } 4709 } 4710 if (mFocusSizeChanged) { 4711 mFocusSizeChanged = false; 4712 // If we are zooming, this will get handled above, when the zoom 4713 // finishes. We also do not need to do this unless the WebTextView 4714 // is showing. With hardware acceleration, the pageSwapCallback() 4715 // updates the WebTextView position in sync with page swapping 4716 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4717 didUpdateWebTextViewDimensions(ANYWHERE); 4718 } 4719 } 4720 } 4721 4722 private void drawTextSelectionHandles(Canvas canvas) { 4723 if (mTextSelectionPaint == null) { 4724 mTextSelectionPaint = new Paint(); 4725 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4726 } 4727 mTextSelectionRegion.setEmpty(); 4728 nativeGetTextSelectionRegion(mNativeClass, mTextSelectionRegion); 4729 Rect r = new Rect(); 4730 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4731 Rect clip = canvas.getClipBounds(); 4732 while (iter.next(r)) { 4733 r.set(contentToViewDimension(r.left), 4734 contentToViewDimension(r.top), 4735 contentToViewDimension(r.right), 4736 contentToViewDimension(r.bottom)); 4737 if (r.intersect(clip)) { 4738 canvas.drawRect(r, mTextSelectionPaint); 4739 } 4740 } 4741 if (mSelectHandleLeft == null) { 4742 mSelectHandleLeft = mContext.getResources().getDrawable( 4743 com.android.internal.R.drawable.text_select_handle_left); 4744 } 4745 int[] handles = new int[4]; 4746 nativeGetSelectionHandles(mNativeClass, handles); 4747 int start_x = contentToViewDimension(handles[0]); 4748 int start_y = contentToViewDimension(handles[1]); 4749 int end_x = contentToViewDimension(handles[2]); 4750 int end_y = contentToViewDimension(handles[3]); 4751 // Magic formula copied from TextView 4752 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4753 mSelectHandleLeft.setBounds(start_x, start_y, 4754 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4755 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4756 if (mSelectHandleRight == null) { 4757 mSelectHandleRight = mContext.getResources().getDrawable( 4758 com.android.internal.R.drawable.text_select_handle_right); 4759 } 4760 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4761 mSelectHandleRight.setBounds(end_x, end_y, 4762 end_x + mSelectHandleRight.getIntrinsicWidth(), 4763 end_y + mSelectHandleRight.getIntrinsicHeight()); 4764 if (DEBUG_TEXT_HANDLES) { 4765 mSelectHandleLeft.setAlpha(125); 4766 mSelectHandleRight.setAlpha(125); 4767 } 4768 mSelectHandleLeft.draw(canvas); 4769 mSelectHandleRight.draw(canvas); 4770 } 4771 4772 // draw history 4773 private boolean mDrawHistory = false; 4774 private Picture mHistoryPicture = null; 4775 private int mHistoryWidth = 0; 4776 private int mHistoryHeight = 0; 4777 4778 // Only check the flag, can be called from WebCore thread 4779 boolean drawHistory() { 4780 return mDrawHistory; 4781 } 4782 4783 int getHistoryPictureWidth() { 4784 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4785 } 4786 4787 // Should only be called in UI thread 4788 void switchOutDrawHistory() { 4789 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4790 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4791 mDrawHistory = false; 4792 mHistoryPicture = null; 4793 invalidate(); 4794 int oldScrollX = mScrollX; 4795 int oldScrollY = mScrollY; 4796 mScrollX = pinLocX(mScrollX); 4797 mScrollY = pinLocY(mScrollY); 4798 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4799 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4800 } else { 4801 sendOurVisibleRect(); 4802 } 4803 } 4804 } 4805 4806 WebViewCore.CursorData cursorData() { 4807 WebViewCore.CursorData result = cursorDataNoPosition(); 4808 Point position = nativeCursorPosition(); 4809 result.mX = position.x; 4810 result.mY = position.y; 4811 return result; 4812 } 4813 4814 WebViewCore.CursorData cursorDataNoPosition() { 4815 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4816 result.mMoveGeneration = nativeMoveGeneration(); 4817 result.mFrame = nativeCursorFramePointer(); 4818 return result; 4819 } 4820 4821 /** 4822 * Delete text from start to end in the focused textfield. If there is no 4823 * focus, or if start == end, silently fail. If start and end are out of 4824 * order, swap them. 4825 * @param start Beginning of selection to delete. 4826 * @param end End of selection to delete. 4827 */ 4828 /* package */ void deleteSelection(int start, int end) { 4829 mTextGeneration++; 4830 WebViewCore.TextSelectionData data 4831 = new WebViewCore.TextSelectionData(start, end); 4832 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4833 data); 4834 } 4835 4836 /** 4837 * Set the selection to (start, end) in the focused textfield. If start and 4838 * end are out of order, swap them. 4839 * @param start Beginning of selection. 4840 * @param end End of selection. 4841 */ 4842 /* package */ void setSelection(int start, int end) { 4843 if (mWebViewCore != null) { 4844 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4845 } 4846 } 4847 4848 @Override 4849 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4850 InputConnection connection = super.onCreateInputConnection(outAttrs); 4851 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4852 return connection; 4853 } 4854 4855 /** 4856 * Called in response to a message from webkit telling us that the soft 4857 * keyboard should be launched. 4858 */ 4859 private void displaySoftKeyboard(boolean isTextView) { 4860 InputMethodManager imm = (InputMethodManager) 4861 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4862 4863 // bring it back to the default level scale so that user can enter text 4864 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4865 if (zoom) { 4866 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4867 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4868 } 4869 if (isTextView) { 4870 rebuildWebTextView(); 4871 if (inEditingMode()) { 4872 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4873 if (zoom) { 4874 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4875 } 4876 return; 4877 } 4878 } 4879 // Used by plugins and contentEditable. 4880 // Also used if the navigation cache is out of date, and 4881 // does not recognize that a textfield is in focus. In that 4882 // case, use WebView as the targeted view. 4883 // see http://b/issue?id=2457459 4884 imm.showSoftInput(this, 0); 4885 } 4886 4887 // Called by WebKit to instruct the UI to hide the keyboard 4888 private void hideSoftKeyboard() { 4889 InputMethodManager imm = InputMethodManager.peekInstance(); 4890 if (imm != null && (imm.isActive(this) 4891 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4892 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4893 } 4894 } 4895 4896 /* 4897 * This method checks the current focus and cursor and potentially rebuilds 4898 * mWebTextView to have the appropriate properties, such as password, 4899 * multiline, and what text it contains. It also removes it if necessary. 4900 */ 4901 /* package */ void rebuildWebTextView() { 4902 // If the WebView does not have focus, do nothing until it gains focus. 4903 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4904 return; 4905 } 4906 boolean alreadyThere = inEditingMode(); 4907 // inEditingMode can only return true if mWebTextView is non-null, 4908 // so we can safely call remove() if (alreadyThere) 4909 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4910 if (alreadyThere) { 4911 mWebTextView.remove(); 4912 } 4913 return; 4914 } 4915 // At this point, we know we have found an input field, so go ahead 4916 // and create the WebTextView if necessary. 4917 if (mWebTextView == null) { 4918 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4919 // Initialize our generation number. 4920 mTextGeneration = 0; 4921 } 4922 mWebTextView.updateTextSize(); 4923 updateWebTextViewPosition(); 4924 String text = nativeFocusCandidateText(); 4925 int nodePointer = nativeFocusCandidatePointer(); 4926 // This needs to be called before setType, which may call 4927 // requestFormData, and it needs to have the correct nodePointer. 4928 mWebTextView.setNodePointer(nodePointer); 4929 mWebTextView.setType(nativeFocusCandidateType()); 4930 // Gravity needs to be set after setType 4931 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 4932 if (null == text) { 4933 if (DebugFlags.WEB_VIEW) { 4934 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4935 } 4936 text = ""; 4937 } 4938 mWebTextView.setTextAndKeepSelection(text); 4939 InputMethodManager imm = InputMethodManager.peekInstance(); 4940 if (imm != null && imm.isActive(mWebTextView)) { 4941 imm.restartInput(mWebTextView); 4942 mWebTextView.clearComposingText(); 4943 } 4944 if (isFocused()) { 4945 mWebTextView.requestFocus(); 4946 } 4947 } 4948 4949 private void updateWebTextViewPosition() { 4950 Rect visibleRect = new Rect(); 4951 calcOurContentVisibleRect(visibleRect); 4952 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4953 // should be in content coordinates. 4954 Rect bounds = nativeFocusCandidateNodeBounds(); 4955 Rect vBox = contentToViewRect(bounds); 4956 offsetByLayerScrollPosition(vBox); 4957 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4958 if (!Rect.intersects(bounds, visibleRect)) { 4959 revealSelection(); 4960 } 4961 updateWebTextViewPadding(); 4962 } 4963 4964 /** 4965 * Update the padding of mWebTextView based on the native textfield/textarea 4966 */ 4967 void updateWebTextViewPadding() { 4968 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4969 if (paddingRect != null) { 4970 // Use contentToViewDimension since these are the dimensions of 4971 // the padding. 4972 mWebTextView.setPadding( 4973 contentToViewDimension(paddingRect.left), 4974 contentToViewDimension(paddingRect.top), 4975 contentToViewDimension(paddingRect.right), 4976 contentToViewDimension(paddingRect.bottom)); 4977 } 4978 } 4979 4980 /** 4981 * Tell webkit to put the cursor on screen. 4982 */ 4983 /* package */ void revealSelection() { 4984 if (mWebViewCore != null) { 4985 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4986 } 4987 } 4988 4989 /** 4990 * Called by WebTextView to find saved form data associated with the 4991 * textfield 4992 * @param name Name of the textfield. 4993 * @param nodePointer Pointer to the node of the textfield, so it can be 4994 * compared to the currently focused textfield when the data is 4995 * retrieved. 4996 * @param autoFillable true if WebKit has determined this field is part of 4997 * a form that can be auto filled. 4998 * @param autoComplete true if the attribute "autocomplete" is set to true 4999 * on the textfield. 5000 */ 5001 /* package */ void requestFormData(String name, int nodePointer, 5002 boolean autoFillable, boolean autoComplete) { 5003 if (mWebViewCore.getSettings().getSaveFormData()) { 5004 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 5005 update.arg1 = nodePointer; 5006 RequestFormData updater = new RequestFormData(name, getUrl(), 5007 update, autoFillable, autoComplete); 5008 Thread t = new Thread(updater); 5009 t.start(); 5010 } 5011 } 5012 5013 /** 5014 * Pass a message to find out the <label> associated with the <input> 5015 * identified by nodePointer 5016 * @param framePointer Pointer to the frame containing the <input> node 5017 * @param nodePointer Pointer to the node for which a <label> is desired. 5018 */ 5019 /* package */ void requestLabel(int framePointer, int nodePointer) { 5020 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 5021 nodePointer); 5022 } 5023 5024 /* 5025 * This class requests an Adapter for the WebTextView which shows past 5026 * entries stored in the database. It is a Runnable so that it can be done 5027 * in its own thread, without slowing down the UI. 5028 */ 5029 private class RequestFormData implements Runnable { 5030 private String mName; 5031 private String mUrl; 5032 private Message mUpdateMessage; 5033 private boolean mAutoFillable; 5034 private boolean mAutoComplete; 5035 private WebSettings mWebSettings; 5036 5037 public RequestFormData(String name, String url, Message msg, 5038 boolean autoFillable, boolean autoComplete) { 5039 mName = name; 5040 mUrl = WebTextView.urlForAutoCompleteData(url); 5041 mUpdateMessage = msg; 5042 mAutoFillable = autoFillable; 5043 mAutoComplete = autoComplete; 5044 mWebSettings = getSettings(); 5045 } 5046 5047 public void run() { 5048 ArrayList<String> pastEntries = new ArrayList<String>(); 5049 5050 if (mAutoFillable) { 5051 // Note that code inside the adapter click handler in WebTextView depends 5052 // on the AutoFill item being at the top of the drop down list. If you change 5053 // the order, make sure to do it there too! 5054 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5055 pastEntries.add(getResources().getText( 5056 com.android.internal.R.string.autofill_this_form).toString() + 5057 " " + 5058 mAutoFillData.getPreviewString()); 5059 mWebTextView.setAutoFillProfileIsSet(true); 5060 } else { 5061 // There is no autofill profile set up yet, so add an option that 5062 // will invite the user to set their profile up. 5063 pastEntries.add(getResources().getText( 5064 com.android.internal.R.string.setup_autofill).toString()); 5065 mWebTextView.setAutoFillProfileIsSet(false); 5066 } 5067 } 5068 5069 if (mAutoComplete) { 5070 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5071 } 5072 5073 if (pastEntries.size() > 0) { 5074 AutoCompleteAdapter adapter = new 5075 AutoCompleteAdapter(mContext, pastEntries); 5076 mUpdateMessage.obj = adapter; 5077 mUpdateMessage.sendToTarget(); 5078 } 5079 } 5080 } 5081 5082 /** 5083 * Dump the display tree to "/sdcard/displayTree.txt" 5084 * 5085 * @hide debug only 5086 */ 5087 public void dumpDisplayTree() { 5088 nativeDumpDisplayTree(getUrl()); 5089 } 5090 5091 /** 5092 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5093 * "/sdcard/domTree.txt" 5094 * 5095 * @hide debug only 5096 */ 5097 public void dumpDomTree(boolean toFile) { 5098 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5099 } 5100 5101 /** 5102 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5103 * to "/sdcard/renderTree.txt" 5104 * 5105 * @hide debug only 5106 */ 5107 public void dumpRenderTree(boolean toFile) { 5108 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5109 } 5110 5111 /** 5112 * Called by DRT on UI thread, need to proxy to WebCore thread. 5113 * 5114 * @hide debug only 5115 */ 5116 public void useMockDeviceOrientation() { 5117 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5118 } 5119 5120 /** 5121 * Called by DRT on WebCore thread. 5122 * 5123 * @hide debug only 5124 */ 5125 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5126 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5127 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5128 canProvideGamma, gamma); 5129 } 5130 5131 // This is used to determine long press with the center key. Does not 5132 // affect long press with the trackball/touch. 5133 private boolean mGotCenterDown = false; 5134 5135 @Override 5136 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5137 if (mBlockWebkitViewMessages) { 5138 return false; 5139 } 5140 // send complex characters to webkit for use by JS and plugins 5141 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5142 // pass the key to DOM 5143 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5144 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5145 // return true as DOM handles the key 5146 return true; 5147 } 5148 return false; 5149 } 5150 5151 private boolean isEnterActionKey(int keyCode) { 5152 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5153 || keyCode == KeyEvent.KEYCODE_ENTER 5154 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5155 } 5156 5157 @Override 5158 public boolean onKeyDown(int keyCode, KeyEvent event) { 5159 if (DebugFlags.WEB_VIEW) { 5160 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5161 + "keyCode=" + keyCode 5162 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5163 } 5164 if (mBlockWebkitViewMessages) { 5165 return false; 5166 } 5167 5168 // don't implement accelerator keys here; defer to host application 5169 if (event.isCtrlPressed()) { 5170 return false; 5171 } 5172 5173 if (mNativeClass == 0) { 5174 return false; 5175 } 5176 5177 // do this hack up front, so it always works, regardless of touch-mode 5178 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5179 mAutoRedraw = !mAutoRedraw; 5180 if (mAutoRedraw) { 5181 invalidate(); 5182 } 5183 return true; 5184 } 5185 5186 // Bubble up the key event if 5187 // 1. it is a system key; or 5188 // 2. the host application wants to handle it; 5189 if (event.isSystem() 5190 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5191 return false; 5192 } 5193 5194 // accessibility support 5195 if (accessibilityScriptInjected()) { 5196 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5197 // if an accessibility script is injected we delegate to it the key handling. 5198 // this script is a screen reader which is a fully fledged solution for blind 5199 // users to navigate in and interact with web pages. 5200 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5201 return true; 5202 } else { 5203 // Clean up if accessibility was disabled after loading the current URL. 5204 mAccessibilityScriptInjected = false; 5205 } 5206 } else if (mAccessibilityInjector != null) { 5207 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5208 if (mAccessibilityInjector.onKeyEvent(event)) { 5209 // if an accessibility injector is present (no JavaScript enabled or the site 5210 // opts out injecting our JavaScript screen reader) we let it decide whether 5211 // to act on and consume the event. 5212 return true; 5213 } 5214 } else { 5215 // Clean up if accessibility was disabled after loading the current URL. 5216 mAccessibilityInjector = null; 5217 } 5218 } 5219 5220 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5221 if (event.hasNoModifiers()) { 5222 pageUp(false); 5223 return true; 5224 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5225 pageUp(true); 5226 return true; 5227 } 5228 } 5229 5230 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5231 if (event.hasNoModifiers()) { 5232 pageDown(false); 5233 return true; 5234 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5235 pageDown(true); 5236 return true; 5237 } 5238 } 5239 5240 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5241 pageUp(true); 5242 return true; 5243 } 5244 5245 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5246 pageDown(true); 5247 return true; 5248 } 5249 5250 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5251 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5252 switchOutDrawHistory(); 5253 if (nativePageShouldHandleShiftAndArrows()) { 5254 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5255 return true; 5256 } 5257 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5258 switch (keyCode) { 5259 case KeyEvent.KEYCODE_DPAD_UP: 5260 pageUp(true); 5261 return true; 5262 case KeyEvent.KEYCODE_DPAD_DOWN: 5263 pageDown(true); 5264 return true; 5265 case KeyEvent.KEYCODE_DPAD_LEFT: 5266 nativeClearCursor(); // start next trackball movement from page edge 5267 return pinScrollTo(0, mScrollY, true, 0); 5268 case KeyEvent.KEYCODE_DPAD_RIGHT: 5269 nativeClearCursor(); // start next trackball movement from page edge 5270 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5271 } 5272 } 5273 if (mSelectingText) { 5274 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5275 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5276 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5277 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5278 int multiplier = event.getRepeatCount() + 1; 5279 moveSelection(xRate * multiplier, yRate * multiplier); 5280 return true; 5281 } 5282 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5283 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5284 return true; 5285 } 5286 // Bubble up the key event as WebView doesn't handle it 5287 return false; 5288 } 5289 5290 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5291 switchOutDrawHistory(); 5292 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5293 || nativeCursorWantsKeyEvents(); 5294 if (event.getRepeatCount() == 0) { 5295 if (mSelectingText) { 5296 return true; // discard press if copy in progress 5297 } 5298 mGotCenterDown = true; 5299 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5300 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5301 if (!wantsKeyEvents) return true; 5302 } 5303 // Bubble up the key event as WebView doesn't handle it 5304 if (!wantsKeyEvents) return false; 5305 } 5306 5307 if (getSettings().getNavDump()) { 5308 switch (keyCode) { 5309 case KeyEvent.KEYCODE_4: 5310 dumpDisplayTree(); 5311 break; 5312 case KeyEvent.KEYCODE_5: 5313 case KeyEvent.KEYCODE_6: 5314 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5315 break; 5316 case KeyEvent.KEYCODE_7: 5317 case KeyEvent.KEYCODE_8: 5318 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5319 break; 5320 } 5321 } 5322 5323 if (nativeCursorIsTextInput()) { 5324 // This message will put the node in focus, for the DOM's notion 5325 // of focus. 5326 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5327 nativeCursorNodePointer()); 5328 // This will bring up the WebTextView and put it in focus, for 5329 // our view system's notion of focus 5330 rebuildWebTextView(); 5331 // Now we need to pass the event to it 5332 if (inEditingMode()) { 5333 mWebTextView.setDefaultSelection(); 5334 return mWebTextView.dispatchKeyEvent(event); 5335 } 5336 } else if (nativeHasFocusNode()) { 5337 // In this case, the cursor is not on a text input, but the focus 5338 // might be. Check it, and if so, hand over to the WebTextView. 5339 rebuildWebTextView(); 5340 if (inEditingMode()) { 5341 mWebTextView.setDefaultSelection(); 5342 return mWebTextView.dispatchKeyEvent(event); 5343 } 5344 } 5345 5346 // TODO: should we pass all the keys to DOM or check the meta tag 5347 if (nativeCursorWantsKeyEvents() || true) { 5348 // pass the key to DOM 5349 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5350 // return true as DOM handles the key 5351 return true; 5352 } 5353 5354 // Bubble up the key event as WebView doesn't handle it 5355 return false; 5356 } 5357 5358 @Override 5359 public boolean onKeyUp(int keyCode, KeyEvent event) { 5360 if (DebugFlags.WEB_VIEW) { 5361 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5362 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5363 } 5364 if (mBlockWebkitViewMessages) { 5365 return false; 5366 } 5367 5368 if (mNativeClass == 0) { 5369 return false; 5370 } 5371 5372 // special CALL handling when cursor node's href is "tel:XXX" 5373 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5374 String text = nativeCursorText(); 5375 if (!nativeCursorIsTextInput() && text != null 5376 && text.startsWith(SCHEME_TEL)) { 5377 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5378 getContext().startActivity(intent); 5379 return true; 5380 } 5381 } 5382 5383 // Bubble up the key event if 5384 // 1. it is a system key; or 5385 // 2. the host application wants to handle it; 5386 if (event.isSystem() 5387 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5388 return false; 5389 } 5390 5391 // accessibility support 5392 if (accessibilityScriptInjected()) { 5393 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5394 // if an accessibility script is injected we delegate to it the key handling. 5395 // this script is a screen reader which is a fully fledged solution for blind 5396 // users to navigate in and interact with web pages. 5397 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5398 return true; 5399 } else { 5400 // Clean up if accessibility was disabled after loading the current URL. 5401 mAccessibilityScriptInjected = false; 5402 } 5403 } else if (mAccessibilityInjector != null) { 5404 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5405 if (mAccessibilityInjector.onKeyEvent(event)) { 5406 // if an accessibility injector is present (no JavaScript enabled or the site 5407 // opts out injecting our JavaScript screen reader) we let it decide whether to 5408 // act on and consume the event. 5409 return true; 5410 } 5411 } else { 5412 // Clean up if accessibility was disabled after loading the current URL. 5413 mAccessibilityInjector = null; 5414 } 5415 } 5416 5417 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5418 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5419 if (nativePageShouldHandleShiftAndArrows()) { 5420 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5421 return true; 5422 } 5423 // always handle the navigation keys in the UI thread 5424 // Bubble up the key event as WebView doesn't handle it 5425 return false; 5426 } 5427 5428 if (isEnterActionKey(keyCode)) { 5429 // remove the long press message first 5430 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5431 mGotCenterDown = false; 5432 5433 if (mSelectingText) { 5434 if (mExtendSelection) { 5435 copySelection(); 5436 selectionDone(); 5437 } else { 5438 mExtendSelection = true; 5439 nativeSetExtendSelection(); 5440 invalidate(); // draw the i-beam instead of the arrow 5441 } 5442 return true; // discard press if copy in progress 5443 } 5444 5445 // perform the single click 5446 Rect visibleRect = sendOurVisibleRect(); 5447 // Note that sendOurVisibleRect calls viewToContent, so the 5448 // coordinates should be in content coordinates. 5449 if (!nativeCursorIntersects(visibleRect)) { 5450 return false; 5451 } 5452 WebViewCore.CursorData data = cursorData(); 5453 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5454 playSoundEffect(SoundEffectConstants.CLICK); 5455 if (nativeCursorIsTextInput()) { 5456 rebuildWebTextView(); 5457 centerKeyPressOnTextField(); 5458 if (inEditingMode()) { 5459 mWebTextView.setDefaultSelection(); 5460 } 5461 return true; 5462 } 5463 clearTextEntry(); 5464 nativeShowCursorTimed(); 5465 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5466 return true; 5467 } 5468 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5469 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5470 nativeCursorNodePointer()); 5471 return true; 5472 } 5473 } 5474 5475 // TODO: should we pass all the keys to DOM or check the meta tag 5476 if (nativeCursorWantsKeyEvents() || true) { 5477 // pass the key to DOM 5478 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5479 // return true as DOM handles the key 5480 return true; 5481 } 5482 5483 // Bubble up the key event as WebView doesn't handle it 5484 return false; 5485 } 5486 5487 /* 5488 * Enter selecting text mode, and see if CAB should be shown. 5489 * Returns true if the WebView is now in 5490 * selecting text mode (including if it was already in that mode, and this 5491 * method did nothing). 5492 */ 5493 private boolean setUpSelect(boolean selectWord, int x, int y) { 5494 if (0 == mNativeClass) return false; // client isn't initialized 5495 if (inFullScreenMode()) return false; 5496 if (mSelectingText) return true; 5497 nativeResetSelection(); 5498 if (selectWord && !nativeWordSelection(x, y)) { 5499 selectionDone(); 5500 return false; 5501 } 5502 mSelectCallback = new SelectActionModeCallback(); 5503 mSelectCallback.setWebView(this); 5504 if (startActionMode(mSelectCallback) == null) { 5505 // There is no ActionMode, so do not allow the user to modify a 5506 // selection. 5507 selectionDone(); 5508 return false; 5509 } 5510 mExtendSelection = false; 5511 mSelectingText = mDrawSelectionPointer = true; 5512 if (DEBUG_TEXT_HANDLES) { 5513 // Debugging text handles requires running in software mode 5514 setLayerType(LAYER_TYPE_SOFTWARE, null); 5515 } 5516 // don't let the picture change during text selection 5517 WebViewCore.pauseUpdatePicture(mWebViewCore); 5518 if (nativeHasCursorNode()) { 5519 Rect rect = nativeCursorNodeBounds(); 5520 mSelectX = contentToViewX(rect.left); 5521 mSelectY = contentToViewY(rect.top); 5522 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5523 mSelectX = mScrollX + mLastTouchX; 5524 mSelectY = mScrollY + mLastTouchY; 5525 } else { 5526 mSelectX = mScrollX + getViewWidth() / 2; 5527 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5528 } 5529 nativeHideCursor(); 5530 mMinAutoScrollX = 0; 5531 mMaxAutoScrollX = getViewWidth(); 5532 mMinAutoScrollY = 0; 5533 mMaxAutoScrollY = getViewHeightWithTitle(); 5534 mCurrentScrollingLayerId = nativeScrollableLayer(viewToContentX(mSelectX), 5535 viewToContentY(mSelectY), mScrollingLayerRect, 5536 mScrollingLayerBounds); 5537 if (mCurrentScrollingLayerId != 0) { 5538 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5539 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5540 contentToViewX(mScrollingLayerBounds.left)); 5541 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5542 contentToViewX(mScrollingLayerBounds.right)); 5543 } 5544 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5545 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5546 contentToViewY(mScrollingLayerBounds.top)); 5547 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5548 contentToViewY(mScrollingLayerBounds.bottom)); 5549 } 5550 } 5551 mMinAutoScrollX += SELECT_SCROLL; 5552 mMaxAutoScrollX -= SELECT_SCROLL; 5553 mMinAutoScrollY += SELECT_SCROLL; 5554 mMaxAutoScrollY -= SELECT_SCROLL; 5555 return true; 5556 } 5557 5558 /** 5559 * Use this method to put the WebView into text selection mode. 5560 * Do not rely on this functionality; it will be deprecated in the future. 5561 * @deprecated This method is now obsolete. 5562 */ 5563 @Deprecated 5564 public void emulateShiftHeld() { 5565 checkThread(); 5566 setUpSelect(false, 0, 0); 5567 } 5568 5569 /** 5570 * Select all of the text in this WebView. 5571 * 5572 * @hide pending API council approval. 5573 */ 5574 public void selectAll() { 5575 if (0 == mNativeClass) return; // client isn't initialized 5576 if (inFullScreenMode()) return; 5577 if (!mSelectingText) { 5578 // retrieve a point somewhere within the text 5579 Point select = nativeSelectableText(); 5580 if (!selectText(select.x, select.y)) return; 5581 } 5582 nativeSelectAll(); 5583 mDrawSelectionPointer = false; 5584 mExtendSelection = true; 5585 invalidate(); 5586 } 5587 5588 /** 5589 * Called when the selection has been removed. 5590 */ 5591 void selectionDone() { 5592 if (mSelectingText) { 5593 mSelectingText = false; 5594 if (DEBUG_TEXT_HANDLES) { 5595 // Debugging text handles required running in software mode, set 5596 // back to default now 5597 setLayerType(LAYER_TYPE_NONE, null); 5598 } 5599 // finish is idempotent, so this is fine even if selectionDone was 5600 // called by mSelectCallback.onDestroyActionMode 5601 mSelectCallback.finish(); 5602 mSelectCallback = null; 5603 WebViewCore.resumePriority(); 5604 WebViewCore.resumeUpdatePicture(mWebViewCore); 5605 invalidate(); // redraw without selection 5606 mAutoScrollX = 0; 5607 mAutoScrollY = 0; 5608 mSentAutoScrollMessage = false; 5609 } 5610 } 5611 5612 /** 5613 * Copy the selection to the clipboard 5614 * 5615 * @hide pending API council approval. 5616 */ 5617 public boolean copySelection() { 5618 boolean copiedSomething = false; 5619 String selection = getSelection(); 5620 if (selection != null && selection != "") { 5621 if (DebugFlags.WEB_VIEW) { 5622 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5623 } 5624 Toast.makeText(mContext 5625 , com.android.internal.R.string.text_copied 5626 , Toast.LENGTH_SHORT).show(); 5627 copiedSomething = true; 5628 ClipboardManager cm = (ClipboardManager)getContext() 5629 .getSystemService(Context.CLIPBOARD_SERVICE); 5630 cm.setText(selection); 5631 } 5632 invalidate(); // remove selection region and pointer 5633 return copiedSomething; 5634 } 5635 5636 /** 5637 * @hide pending API Council approval. 5638 */ 5639 public SearchBox getSearchBox() { 5640 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5641 return null; 5642 } 5643 return mWebViewCore.getBrowserFrame().getSearchBox(); 5644 } 5645 5646 /** 5647 * Returns the currently highlighted text as a string. 5648 */ 5649 String getSelection() { 5650 if (mNativeClass == 0) return ""; 5651 return nativeGetSelection(); 5652 } 5653 5654 @Override 5655 protected void onAttachedToWindow() { 5656 super.onAttachedToWindow(); 5657 if (hasWindowFocus()) setActive(true); 5658 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5659 if (mGlobalLayoutListener == null) { 5660 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5661 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5662 } 5663 if (mScrollChangedListener == null) { 5664 mScrollChangedListener = new InnerScrollChangedListener(); 5665 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5666 } 5667 5668 addAccessibilityApisToJavaScript(); 5669 5670 mTouchEventQueue.reset(); 5671 } 5672 5673 @Override 5674 protected void onDetachedFromWindow() { 5675 clearHelpers(); 5676 mZoomManager.dismissZoomPicker(); 5677 if (hasWindowFocus()) setActive(false); 5678 5679 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5680 if (mGlobalLayoutListener != null) { 5681 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5682 mGlobalLayoutListener = null; 5683 } 5684 if (mScrollChangedListener != null) { 5685 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5686 mScrollChangedListener = null; 5687 } 5688 5689 removeAccessibilityApisFromJavaScript(); 5690 5691 super.onDetachedFromWindow(); 5692 } 5693 5694 @Override 5695 protected void onVisibilityChanged(View changedView, int visibility) { 5696 super.onVisibilityChanged(changedView, visibility); 5697 // The zoomManager may be null if the webview is created from XML that 5698 // specifies the view's visibility param as not visible (see http://b/2794841) 5699 if (visibility != View.VISIBLE && mZoomManager != null) { 5700 mZoomManager.dismissZoomPicker(); 5701 } 5702 updateDrawingState(); 5703 } 5704 5705 /** 5706 * @deprecated WebView no longer needs to implement 5707 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5708 */ 5709 @Deprecated 5710 public void onChildViewAdded(View parent, View child) {} 5711 5712 /** 5713 * @deprecated WebView no longer needs to implement 5714 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5715 */ 5716 @Deprecated 5717 public void onChildViewRemoved(View p, View child) {} 5718 5719 /** 5720 * @deprecated WebView should not have implemented 5721 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5722 */ 5723 @Deprecated 5724 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5725 } 5726 5727 void setActive(boolean active) { 5728 if (active) { 5729 if (hasFocus()) { 5730 // If our window regained focus, and we have focus, then begin 5731 // drawing the cursor ring 5732 mDrawCursorRing = !inEditingMode(); 5733 setFocusControllerActive(true); 5734 } else { 5735 mDrawCursorRing = false; 5736 if (!inEditingMode()) { 5737 // If our window gained focus, but we do not have it, do not 5738 // draw the cursor ring. 5739 setFocusControllerActive(false); 5740 } 5741 // We do not call recordButtons here because we assume 5742 // that when we lost focus, or window focus, it got called with 5743 // false for the first parameter 5744 } 5745 } else { 5746 if (!mZoomManager.isZoomPickerVisible()) { 5747 /* 5748 * The external zoom controls come in their own window, so our 5749 * window loses focus. Our policy is to not draw the cursor ring 5750 * if our window is not focused, but this is an exception since 5751 * the user can still navigate the web page with the zoom 5752 * controls showing. 5753 */ 5754 mDrawCursorRing = false; 5755 } 5756 mKeysPressed.clear(); 5757 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5758 mTouchMode = TOUCH_DONE_MODE; 5759 setFocusControllerActive(false); 5760 } 5761 invalidate(); 5762 } 5763 5764 // To avoid drawing the cursor ring, and remove the TextView when our window 5765 // loses focus. 5766 @Override 5767 public void onWindowFocusChanged(boolean hasWindowFocus) { 5768 setActive(hasWindowFocus); 5769 if (hasWindowFocus) { 5770 JWebCoreJavaBridge.setActiveWebView(this); 5771 if (mPictureUpdatePausedForFocusChange) { 5772 WebViewCore.resumeUpdatePicture(mWebViewCore); 5773 mPictureUpdatePausedForFocusChange = false; 5774 } 5775 } else { 5776 JWebCoreJavaBridge.removeActiveWebView(this); 5777 final WebSettings settings = getSettings(); 5778 if (settings != null && settings.enableSmoothTransition() && 5779 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5780 WebViewCore.pauseUpdatePicture(mWebViewCore); 5781 mPictureUpdatePausedForFocusChange = true; 5782 } 5783 } 5784 super.onWindowFocusChanged(hasWindowFocus); 5785 } 5786 5787 /* 5788 * Pass a message to WebCore Thread, telling the WebCore::Page's 5789 * FocusController to be "inactive" so that it will 5790 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5791 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5792 */ 5793 /* package */ void setFocusControllerActive(boolean active) { 5794 if (mWebViewCore == null) return; 5795 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5796 // Need to send this message after the document regains focus. 5797 if (active && mListBoxMessage != null) { 5798 mWebViewCore.sendMessage(mListBoxMessage); 5799 mListBoxMessage = null; 5800 } 5801 } 5802 5803 @Override 5804 protected void onFocusChanged(boolean focused, int direction, 5805 Rect previouslyFocusedRect) { 5806 if (DebugFlags.WEB_VIEW) { 5807 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5808 } 5809 if (focused) { 5810 // When we regain focus, if we have window focus, resume drawing 5811 // the cursor ring 5812 if (hasWindowFocus()) { 5813 mDrawCursorRing = !inEditingMode(); 5814 setFocusControllerActive(true); 5815 //} else { 5816 // The WebView has gained focus while we do not have 5817 // windowfocus. When our window lost focus, we should have 5818 // called recordButtons(false...) 5819 } 5820 } else { 5821 // When we lost focus, unless focus went to the TextView (which is 5822 // true if we are in editing mode), stop drawing the cursor ring. 5823 mDrawCursorRing = false; 5824 if (!inEditingMode()) { 5825 setFocusControllerActive(false); 5826 } 5827 mKeysPressed.clear(); 5828 } 5829 5830 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5831 } 5832 5833 void setGLRectViewport() { 5834 // Use the getGlobalVisibleRect() to get the intersection among the parents 5835 // visible == false means we're clipped - send a null rect down to indicate that 5836 // we should not draw 5837 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5838 if (visible) { 5839 // Then need to invert the Y axis, just for GL 5840 View rootView = getRootView(); 5841 int rootViewHeight = rootView.getHeight(); 5842 mViewRectViewport.set(mGLRectViewport); 5843 int savedWebViewBottom = mGLRectViewport.bottom; 5844 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5845 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5846 mGLViewportEmpty = false; 5847 } else { 5848 mGLViewportEmpty = true; 5849 } 5850 calcOurContentVisibleRectF(mVisibleContentRect); 5851 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5852 mGLViewportEmpty ? null : mViewRectViewport, 5853 mVisibleContentRect); 5854 } 5855 5856 /** 5857 * @hide 5858 */ 5859 @Override 5860 protected boolean setFrame(int left, int top, int right, int bottom) { 5861 boolean changed = super.setFrame(left, top, right, bottom); 5862 if (!changed && mHeightCanMeasure) { 5863 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5864 // in WebViewCore after we get the first layout. We do call 5865 // requestLayout() when we get contentSizeChanged(). But the View 5866 // system won't call onSizeChanged if the dimension is not changed. 5867 // In this case, we need to call sendViewSizeZoom() explicitly to 5868 // notify the WebKit about the new dimensions. 5869 sendViewSizeZoom(false); 5870 } 5871 setGLRectViewport(); 5872 return changed; 5873 } 5874 5875 @Override 5876 protected void onSizeChanged(int w, int h, int ow, int oh) { 5877 super.onSizeChanged(w, h, ow, oh); 5878 5879 // adjust the max viewport width depending on the view dimensions. This 5880 // is to ensure the scaling is not going insane. So do not shrink it if 5881 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5882 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5883 if (newMaxViewportWidth > sMaxViewportWidth) { 5884 sMaxViewportWidth = newMaxViewportWidth; 5885 } 5886 5887 mZoomManager.onSizeChanged(w, h, ow, oh); 5888 5889 if (mLoadedPicture != null && mDelaySetPicture == null) { 5890 // Size changes normally result in a new picture 5891 // Re-set the loaded picture to simulate that 5892 // However, do not update the base layer as that hasn't changed 5893 setNewPicture(mLoadedPicture, false); 5894 } 5895 } 5896 5897 @Override 5898 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5899 super.onScrollChanged(l, t, oldl, oldt); 5900 if (!mInOverScrollMode) { 5901 sendOurVisibleRect(); 5902 // update WebKit if visible title bar height changed. The logic is same 5903 // as getVisibleTitleHeightImpl. 5904 int titleHeight = getTitleHeight(); 5905 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5906 sendViewSizeZoom(false); 5907 } 5908 } 5909 } 5910 5911 @Override 5912 public boolean dispatchKeyEvent(KeyEvent event) { 5913 switch (event.getAction()) { 5914 case KeyEvent.ACTION_DOWN: 5915 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5916 break; 5917 case KeyEvent.ACTION_MULTIPLE: 5918 // Always accept the action. 5919 break; 5920 case KeyEvent.ACTION_UP: 5921 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5922 if (location == -1) { 5923 // We did not receive the key down for this key, so do not 5924 // handle the key up. 5925 return false; 5926 } else { 5927 // We did receive the key down. Handle the key up, and 5928 // remove it from our pressed keys. 5929 mKeysPressed.remove(location); 5930 } 5931 break; 5932 default: 5933 // Accept the action. This should not happen, unless a new 5934 // action is added to KeyEvent. 5935 break; 5936 } 5937 if (inEditingMode() && mWebTextView.isFocused()) { 5938 // Ensure that the WebTextView gets the event, even if it does 5939 // not currently have a bounds. 5940 return mWebTextView.dispatchKeyEvent(event); 5941 } else { 5942 return super.dispatchKeyEvent(event); 5943 } 5944 } 5945 5946 /* 5947 * Here is the snap align logic: 5948 * 1. If it starts nearly horizontally or vertically, snap align; 5949 * 2. If there is a dramitic direction change, let it go; 5950 * 5951 * Adjustable parameters. Angle is the radians on a unit circle, limited 5952 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5953 */ 5954 private static final float HSLOPE_TO_START_SNAP = .25f; 5955 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5956 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5957 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5958 /* 5959 * These values are used to influence the average angle when entering 5960 * snap mode. If is is the first movement entering snap, we set the average 5961 * to the appropriate ideal. If the user is entering into snap after the 5962 * first movement, then we average the average angle with these values. 5963 */ 5964 private static final float ANGLE_VERT = 2f; 5965 private static final float ANGLE_HORIZ = 0f; 5966 /* 5967 * The modified moving average weight. 5968 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5969 */ 5970 private static final float MMA_WEIGHT_N = 5; 5971 5972 private boolean hitFocusedPlugin(int contentX, int contentY) { 5973 if (DebugFlags.WEB_VIEW) { 5974 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5975 Rect r = nativeFocusNodeBounds(); 5976 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5977 + ", " + r.right + ", " + r.bottom + ")"); 5978 } 5979 return nativeFocusIsPlugin() 5980 && nativeFocusNodeBounds().contains(contentX, contentY); 5981 } 5982 5983 private boolean shouldForwardTouchEvent() { 5984 if (mFullScreenHolder != null) return true; 5985 if (mBlockWebkitViewMessages) return false; 5986 return mForwardTouchEvents 5987 && !mSelectingText 5988 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5989 && mPreventDefault != PREVENT_DEFAULT_NO; 5990 } 5991 5992 private boolean inFullScreenMode() { 5993 return mFullScreenHolder != null; 5994 } 5995 5996 private void dismissFullScreenMode() { 5997 if (inFullScreenMode()) { 5998 mFullScreenHolder.hide(); 5999 mFullScreenHolder = null; 6000 invalidate(); 6001 } 6002 } 6003 6004 void onPinchToZoomAnimationStart() { 6005 // cancel the single touch handling 6006 cancelTouch(); 6007 onZoomAnimationStart(); 6008 } 6009 6010 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 6011 onZoomAnimationEnd(); 6012 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 6013 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 6014 // as it may trigger the unwanted fling. 6015 mTouchMode = TOUCH_PINCH_DRAG; 6016 mConfirmMove = true; 6017 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 6018 } 6019 6020 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 6021 // layer is found. 6022 private void startScrollingLayer(float x, float y) { 6023 int contentX = viewToContentX((int) x + mScrollX); 6024 int contentY = viewToContentY((int) y + mScrollY); 6025 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 6026 mScrollingLayerRect, mScrollingLayerBounds); 6027 if (mCurrentScrollingLayerId != 0) { 6028 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6029 } 6030 } 6031 6032 // 1/(density * density) used to compute the distance between points. 6033 // Computed in init(). 6034 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 6035 6036 // The distance between two points reported in onTouchEvent scaled by the 6037 // density of the screen. 6038 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 6039 6040 @Override 6041 public boolean onHoverEvent(MotionEvent event) { 6042 if (mNativeClass == 0) { 6043 return false; 6044 } 6045 WebViewCore.CursorData data = cursorDataNoPosition(); 6046 data.mX = viewToContentX((int) event.getX() + mScrollX); 6047 data.mY = viewToContentY((int) event.getY() + mScrollY); 6048 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6049 return true; 6050 } 6051 6052 @Override 6053 public boolean onTouchEvent(MotionEvent ev) { 6054 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6055 return false; 6056 } 6057 6058 if (DebugFlags.WEB_VIEW) { 6059 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6060 + " mTouchMode=" + mTouchMode 6061 + " numPointers=" + ev.getPointerCount()); 6062 } 6063 6064 // If WebKit wasn't interested in this multitouch gesture, enqueue 6065 // the event for handling directly rather than making the round trip 6066 // to WebKit and back. 6067 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6068 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6069 } else { 6070 mTouchEventQueue.enqueueTouchEvent(ev); 6071 } 6072 6073 // Since all events are handled asynchronously, we always want the gesture stream. 6074 return true; 6075 } 6076 6077 private float calculateDragAngle(int dx, int dy) { 6078 dx = Math.abs(dx); 6079 dy = Math.abs(dy); 6080 return (float) Math.atan2(dy, dx); 6081 } 6082 6083 /* 6084 * Common code for single touch and multi-touch. 6085 * (x, y) denotes current focus point, which is the touch point for single touch 6086 * and the middle point for multi-touch. 6087 */ 6088 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6089 long eventTime = ev.getEventTime(); 6090 6091 // Due to the touch screen edge effect, a touch closer to the edge 6092 // always snapped to the edge. As getViewWidth() can be different from 6093 // getWidth() due to the scrollbar, adjusting the point to match 6094 // getViewWidth(). Same applied to the height. 6095 x = Math.min(x, getViewWidth() - 1); 6096 y = Math.min(y, getViewHeightWithTitle() - 1); 6097 6098 int deltaX = mLastTouchX - x; 6099 int deltaY = mLastTouchY - y; 6100 int contentX = viewToContentX(x + mScrollX); 6101 int contentY = viewToContentY(y + mScrollY); 6102 6103 switch (action) { 6104 case MotionEvent.ACTION_DOWN: { 6105 mPreventDefault = PREVENT_DEFAULT_NO; 6106 mConfirmMove = false; 6107 mInitialHitTestResult = null; 6108 if (!mScroller.isFinished()) { 6109 // stop the current scroll animation, but if this is 6110 // the start of a fling, allow it to add to the current 6111 // fling's velocity 6112 mScroller.abortAnimation(); 6113 mTouchMode = TOUCH_DRAG_START_MODE; 6114 mConfirmMove = true; 6115 nativeSetIsScrolling(false); 6116 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6117 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6118 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6119 removeTouchHighlight(); 6120 } 6121 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6122 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6123 } else { 6124 // commit the short press action for the previous tap 6125 doShortPress(); 6126 mTouchMode = TOUCH_INIT_MODE; 6127 mDeferTouchProcess = !mBlockWebkitViewMessages 6128 && (!inFullScreenMode() && mForwardTouchEvents) 6129 ? hitFocusedPlugin(contentX, contentY) 6130 : false; 6131 } 6132 } else { // the normal case 6133 mTouchMode = TOUCH_INIT_MODE; 6134 mDeferTouchProcess = !mBlockWebkitViewMessages 6135 && (!inFullScreenMode() && mForwardTouchEvents) 6136 ? hitFocusedPlugin(contentX, contentY) 6137 : false; 6138 if (!mBlockWebkitViewMessages) { 6139 mWebViewCore.sendMessage( 6140 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6141 } 6142 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6143 TouchHighlightData data = new TouchHighlightData(); 6144 data.mX = contentX; 6145 data.mY = contentY; 6146 data.mNativeLayerRect = new Rect(); 6147 data.mNativeLayer = nativeScrollableLayer( 6148 contentX, contentY, data.mNativeLayerRect, null); 6149 data.mSlop = viewToContentDimension(mNavSlop); 6150 mTouchHighlightRegion.setEmpty(); 6151 if (!mBlockWebkitViewMessages) { 6152 mTouchHighlightRequested = System.currentTimeMillis(); 6153 mWebViewCore.sendMessageAtFrontOfQueue( 6154 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data); 6155 } 6156 if (DEBUG_TOUCH_HIGHLIGHT) { 6157 if (getSettings().getNavDump()) { 6158 mTouchHighlightX = (int) x + mScrollX; 6159 mTouchHighlightY = (int) y + mScrollY; 6160 mPrivateHandler.postDelayed(new Runnable() { 6161 public void run() { 6162 mTouchHighlightX = mTouchHighlightY = 0; 6163 invalidate(); 6164 } 6165 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6166 } 6167 } 6168 } 6169 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6170 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6171 (eventTime - mLastTouchUpTime), eventTime); 6172 } 6173 if (mSelectingText) { 6174 mDrawSelectionPointer = false; 6175 mSelectionStarted = nativeStartSelection(contentX, contentY); 6176 if (DebugFlags.WEB_VIEW) { 6177 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6178 } 6179 invalidate(); 6180 } 6181 } 6182 // Trigger the link 6183 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6184 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6185 mPrivateHandler.sendEmptyMessageDelayed( 6186 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6187 mPrivateHandler.sendEmptyMessageDelayed( 6188 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6189 if (inFullScreenMode() || mDeferTouchProcess) { 6190 mPreventDefault = PREVENT_DEFAULT_YES; 6191 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6192 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6193 } else { 6194 mPreventDefault = PREVENT_DEFAULT_NO; 6195 } 6196 // pass the touch events from UI thread to WebCore thread 6197 if (shouldForwardTouchEvent()) { 6198 TouchEventData ted = new TouchEventData(); 6199 ted.mAction = action; 6200 ted.mIds = new int[1]; 6201 ted.mIds[0] = ev.getPointerId(0); 6202 ted.mPoints = new Point[1]; 6203 ted.mPoints[0] = new Point(contentX, contentY); 6204 ted.mPointsInView = new Point[1]; 6205 ted.mPointsInView[0] = new Point(x, y); 6206 ted.mMetaState = ev.getMetaState(); 6207 ted.mReprocess = mDeferTouchProcess; 6208 ted.mNativeLayer = nativeScrollableLayer( 6209 contentX, contentY, ted.mNativeLayerRect, null); 6210 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6211 mTouchEventQueue.preQueueTouchEventData(ted); 6212 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6213 if (mDeferTouchProcess) { 6214 // still needs to set them for compute deltaX/Y 6215 mLastTouchX = x; 6216 mLastTouchY = y; 6217 break; 6218 } 6219 if (!inFullScreenMode()) { 6220 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6221 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6222 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6223 action, 0), TAP_TIMEOUT); 6224 } 6225 } 6226 } 6227 startTouch(x, y, eventTime); 6228 break; 6229 } 6230 case MotionEvent.ACTION_MOVE: { 6231 boolean firstMove = false; 6232 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6233 >= mTouchSlopSquare) { 6234 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6235 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6236 mConfirmMove = true; 6237 firstMove = true; 6238 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6239 mTouchMode = TOUCH_INIT_MODE; 6240 } 6241 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6242 removeTouchHighlight(); 6243 } 6244 } 6245 // pass the touch events from UI thread to WebCore thread 6246 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6247 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6248 TouchEventData ted = new TouchEventData(); 6249 ted.mAction = action; 6250 ted.mIds = new int[1]; 6251 ted.mIds[0] = ev.getPointerId(0); 6252 ted.mPoints = new Point[1]; 6253 ted.mPoints[0] = new Point(contentX, contentY); 6254 ted.mPointsInView = new Point[1]; 6255 ted.mPointsInView[0] = new Point(x, y); 6256 ted.mMetaState = ev.getMetaState(); 6257 ted.mReprocess = mDeferTouchProcess; 6258 ted.mNativeLayer = mCurrentScrollingLayerId; 6259 ted.mNativeLayerRect.set(mScrollingLayerRect); 6260 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6261 mTouchEventQueue.preQueueTouchEventData(ted); 6262 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6263 mLastSentTouchTime = eventTime; 6264 if (mDeferTouchProcess) { 6265 break; 6266 } 6267 if (firstMove && !inFullScreenMode()) { 6268 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6269 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6270 action, 0), TAP_TIMEOUT); 6271 } 6272 } 6273 if (mTouchMode == TOUCH_DONE_MODE 6274 || mPreventDefault == PREVENT_DEFAULT_YES) { 6275 // no dragging during scroll zoom animation, or when prevent 6276 // default is yes 6277 break; 6278 } 6279 if (mVelocityTracker == null) { 6280 Log.e(LOGTAG, "Got null mVelocityTracker when " 6281 + "mPreventDefault = " + mPreventDefault 6282 + " mDeferTouchProcess = " + mDeferTouchProcess 6283 + " mTouchMode = " + mTouchMode); 6284 } else { 6285 mVelocityTracker.addMovement(ev); 6286 } 6287 if (mSelectingText && mSelectionStarted) { 6288 if (DebugFlags.WEB_VIEW) { 6289 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6290 } 6291 ViewParent parent = getParent(); 6292 if (parent != null) { 6293 parent.requestDisallowInterceptTouchEvent(true); 6294 } 6295 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6296 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6297 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6298 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6299 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6300 && !mSentAutoScrollMessage) { 6301 mSentAutoScrollMessage = true; 6302 mPrivateHandler.sendEmptyMessageDelayed( 6303 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6304 } 6305 if (deltaX != 0 || deltaY != 0) { 6306 nativeExtendSelection(contentX, contentY); 6307 invalidate(); 6308 } 6309 break; 6310 } 6311 6312 if (mTouchMode != TOUCH_DRAG_MODE && 6313 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6314 6315 if (!mConfirmMove) { 6316 break; 6317 } 6318 6319 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6320 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6321 // track mLastTouchTime as we may need to do fling at 6322 // ACTION_UP 6323 mLastTouchTime = eventTime; 6324 break; 6325 } 6326 6327 // Only lock dragging to one axis if we don't have a scale in progress. 6328 // Scaling implies free-roaming movement. Note this is only ever a question 6329 // if mZoomManager.supportsPanDuringZoom() is true. 6330 final ScaleGestureDetector detector = 6331 mZoomManager.getMultiTouchGestureDetector(); 6332 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6333 if (detector == null || !detector.isInProgress()) { 6334 // if it starts nearly horizontal or vertical, enforce it 6335 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6336 mSnapScrollMode = SNAP_X; 6337 mSnapPositive = deltaX > 0; 6338 mAverageAngle = ANGLE_HORIZ; 6339 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6340 mSnapScrollMode = SNAP_Y; 6341 mSnapPositive = deltaY > 0; 6342 mAverageAngle = ANGLE_VERT; 6343 } 6344 } 6345 6346 mTouchMode = TOUCH_DRAG_MODE; 6347 mLastTouchX = x; 6348 mLastTouchY = y; 6349 deltaX = 0; 6350 deltaY = 0; 6351 6352 startScrollingLayer(x, y); 6353 startDrag(); 6354 } 6355 6356 // do pan 6357 boolean done = false; 6358 boolean keepScrollBarsVisible = false; 6359 if (deltaX == 0 && deltaY == 0) { 6360 keepScrollBarsVisible = done = true; 6361 } else { 6362 mAverageAngle += 6363 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6364 / MMA_WEIGHT_N; 6365 if (mSnapScrollMode != SNAP_NONE) { 6366 if (mSnapScrollMode == SNAP_Y) { 6367 // radical change means getting out of snap mode 6368 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6369 mSnapScrollMode = SNAP_NONE; 6370 } 6371 } 6372 if (mSnapScrollMode == SNAP_X) { 6373 // radical change means getting out of snap mode 6374 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6375 mSnapScrollMode = SNAP_NONE; 6376 } 6377 } 6378 } else { 6379 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6380 mSnapScrollMode = SNAP_X; 6381 mSnapPositive = deltaX > 0; 6382 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6383 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6384 mSnapScrollMode = SNAP_Y; 6385 mSnapPositive = deltaY > 0; 6386 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6387 } 6388 } 6389 if (mSnapScrollMode != SNAP_NONE) { 6390 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6391 deltaY = 0; 6392 } else { 6393 deltaX = 0; 6394 } 6395 } 6396 mLastTouchX = x; 6397 mLastTouchY = y; 6398 6399 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6400 mHeldMotionless = MOTIONLESS_FALSE; 6401 nativeSetIsScrolling(true); 6402 } else { 6403 mHeldMotionless = MOTIONLESS_TRUE; 6404 nativeSetIsScrolling(false); 6405 keepScrollBarsVisible = true; 6406 } 6407 6408 mLastTouchTime = eventTime; 6409 } 6410 6411 doDrag(deltaX, deltaY); 6412 6413 // Turn off scrollbars when dragging a layer. 6414 if (keepScrollBarsVisible && 6415 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6416 if (mHeldMotionless != MOTIONLESS_TRUE) { 6417 mHeldMotionless = MOTIONLESS_TRUE; 6418 invalidate(); 6419 } 6420 // keep the scrollbar on the screen even there is no scroll 6421 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6422 false); 6423 // Post a message so that we'll keep them alive while we're not scrolling. 6424 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6425 .obtainMessage(AWAKEN_SCROLL_BARS), 6426 ViewConfiguration.getScrollDefaultDelay()); 6427 // return false to indicate that we can't pan out of the 6428 // view space 6429 return !done; 6430 } else { 6431 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6432 } 6433 break; 6434 } 6435 case MotionEvent.ACTION_UP: { 6436 if (!isFocused()) requestFocus(); 6437 // pass the touch events from UI thread to WebCore thread 6438 if (shouldForwardTouchEvent()) { 6439 TouchEventData ted = new TouchEventData(); 6440 ted.mIds = new int[1]; 6441 ted.mIds[0] = ev.getPointerId(0); 6442 ted.mAction = action; 6443 ted.mPoints = new Point[1]; 6444 ted.mPoints[0] = new Point(contentX, contentY); 6445 ted.mPointsInView = new Point[1]; 6446 ted.mPointsInView[0] = new Point(x, y); 6447 ted.mMetaState = ev.getMetaState(); 6448 ted.mReprocess = mDeferTouchProcess; 6449 ted.mNativeLayer = mCurrentScrollingLayerId; 6450 ted.mNativeLayerRect.set(mScrollingLayerRect); 6451 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6452 mTouchEventQueue.preQueueTouchEventData(ted); 6453 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6454 } 6455 mLastTouchUpTime = eventTime; 6456 if (mSentAutoScrollMessage) { 6457 mAutoScrollX = mAutoScrollY = 0; 6458 } 6459 switch (mTouchMode) { 6460 case TOUCH_DOUBLE_TAP_MODE: // double tap 6461 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6462 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6463 if (inFullScreenMode() || mDeferTouchProcess) { 6464 TouchEventData ted = new TouchEventData(); 6465 ted.mIds = new int[1]; 6466 ted.mIds[0] = ev.getPointerId(0); 6467 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6468 ted.mPoints = new Point[1]; 6469 ted.mPoints[0] = new Point(contentX, contentY); 6470 ted.mPointsInView = new Point[1]; 6471 ted.mPointsInView[0] = new Point(x, y); 6472 ted.mMetaState = ev.getMetaState(); 6473 ted.mReprocess = mDeferTouchProcess; 6474 ted.mNativeLayer = nativeScrollableLayer( 6475 contentX, contentY, 6476 ted.mNativeLayerRect, null); 6477 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6478 mTouchEventQueue.preQueueTouchEventData(ted); 6479 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6480 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6481 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6482 mTouchMode = TOUCH_DONE_MODE; 6483 } 6484 break; 6485 case TOUCH_INIT_MODE: // tap 6486 case TOUCH_SHORTPRESS_START_MODE: 6487 case TOUCH_SHORTPRESS_MODE: 6488 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6489 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6490 if (mConfirmMove) { 6491 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6492 " WebCore's response for touch down."); 6493 if (mPreventDefault != PREVENT_DEFAULT_YES 6494 && (computeMaxScrollX() > 0 6495 || computeMaxScrollY() > 0)) { 6496 // If the user has performed a very quick touch 6497 // sequence it is possible that we may get here 6498 // before WebCore has had a chance to process the events. 6499 // In this case, any call to preventDefault in the 6500 // JS touch handler will not have been executed yet. 6501 // Hence we will see both the UI (now) and WebCore 6502 // (when context switches) handling the event, 6503 // regardless of whether the web developer actually 6504 // doeses preventDefault in their touch handler. This 6505 // is the nature of our asynchronous touch model. 6506 6507 // we will not rewrite drag code here, but we 6508 // will try fling if it applies. 6509 WebViewCore.reducePriority(); 6510 // to get better performance, pause updating the 6511 // picture 6512 WebViewCore.pauseUpdatePicture(mWebViewCore); 6513 // fall through to TOUCH_DRAG_MODE 6514 } else { 6515 // WebKit may consume the touch event and modify 6516 // DOM. drawContentPicture() will be called with 6517 // animateSroll as true for better performance. 6518 // Force redraw in high-quality. 6519 invalidate(); 6520 break; 6521 } 6522 } else { 6523 if (mSelectingText) { 6524 // tapping on selection or controls does nothing 6525 if (!nativeHitSelection(contentX, contentY)) { 6526 selectionDone(); 6527 } 6528 break; 6529 } 6530 // only trigger double tap if the WebView is 6531 // scalable 6532 if (mTouchMode == TOUCH_INIT_MODE 6533 && (canZoomIn() || canZoomOut())) { 6534 mPrivateHandler.sendEmptyMessageDelayed( 6535 RELEASE_SINGLE_TAP, ViewConfiguration 6536 .getDoubleTapTimeout()); 6537 } else { 6538 doShortPress(); 6539 } 6540 break; 6541 } 6542 case TOUCH_DRAG_MODE: 6543 case TOUCH_DRAG_LAYER_MODE: 6544 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6545 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6546 // if the user waits a while w/o moving before the 6547 // up, we don't want to do a fling 6548 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6549 if (mVelocityTracker == null) { 6550 Log.e(LOGTAG, "Got null mVelocityTracker when " 6551 + "mPreventDefault = " 6552 + mPreventDefault 6553 + " mDeferTouchProcess = " 6554 + mDeferTouchProcess); 6555 } else { 6556 mVelocityTracker.addMovement(ev); 6557 } 6558 // set to MOTIONLESS_IGNORE so that it won't keep 6559 // removing and sending message in 6560 // drawCoreAndCursorRing() 6561 mHeldMotionless = MOTIONLESS_IGNORE; 6562 doFling(); 6563 break; 6564 } else { 6565 if (mScroller.springBack(mScrollX, mScrollY, 0, 6566 computeMaxScrollX(), 0, 6567 computeMaxScrollY())) { 6568 invalidate(); 6569 } 6570 } 6571 // redraw in high-quality, as we're done dragging 6572 mHeldMotionless = MOTIONLESS_TRUE; 6573 invalidate(); 6574 // fall through 6575 case TOUCH_DRAG_START_MODE: 6576 // TOUCH_DRAG_START_MODE should not happen for the real 6577 // device as we almost certain will get a MOVE. But this 6578 // is possible on emulator. 6579 mLastVelocity = 0; 6580 WebViewCore.resumePriority(); 6581 if (!mSelectingText) { 6582 WebViewCore.resumeUpdatePicture(mWebViewCore); 6583 } 6584 break; 6585 } 6586 stopTouch(); 6587 break; 6588 } 6589 case MotionEvent.ACTION_CANCEL: { 6590 if (mTouchMode == TOUCH_DRAG_MODE) { 6591 mScroller.springBack(mScrollX, mScrollY, 0, 6592 computeMaxScrollX(), 0, computeMaxScrollY()); 6593 invalidate(); 6594 } 6595 cancelWebCoreTouchEvent(contentX, contentY, false); 6596 cancelTouch(); 6597 break; 6598 } 6599 } 6600 return true; 6601 } 6602 6603 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6604 TouchEventData ted = new TouchEventData(); 6605 ted.mAction = ev.getActionMasked(); 6606 final int count = ev.getPointerCount(); 6607 ted.mIds = new int[count]; 6608 ted.mPoints = new Point[count]; 6609 ted.mPointsInView = new Point[count]; 6610 for (int c = 0; c < count; c++) { 6611 ted.mIds[c] = ev.getPointerId(c); 6612 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6613 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6614 ted.mPoints[c] = new Point(x, y); 6615 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6616 } 6617 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6618 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6619 ted.mActionIndex = ev.getActionIndex(); 6620 } 6621 ted.mMetaState = ev.getMetaState(); 6622 ted.mReprocess = true; 6623 ted.mMotionEvent = MotionEvent.obtain(ev); 6624 ted.mSequence = sequence; 6625 mTouchEventQueue.preQueueTouchEventData(ted); 6626 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6627 cancelLongPress(); 6628 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6629 } 6630 6631 void handleMultiTouchInWebView(MotionEvent ev) { 6632 if (DebugFlags.WEB_VIEW) { 6633 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6634 + " mTouchMode=" + mTouchMode 6635 + " numPointers=" + ev.getPointerCount() 6636 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6637 } 6638 6639 final ScaleGestureDetector detector = 6640 mZoomManager.getMultiTouchGestureDetector(); 6641 6642 // A few apps use WebView but don't instantiate gesture detector. 6643 // We don't need to support multi touch for them. 6644 if (detector == null) return; 6645 6646 float x = ev.getX(); 6647 float y = ev.getY(); 6648 6649 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6650 detector.onTouchEvent(ev); 6651 6652 if (detector.isInProgress()) { 6653 if (DebugFlags.WEB_VIEW) { 6654 Log.v(LOGTAG, "detector is in progress"); 6655 } 6656 mLastTouchTime = ev.getEventTime(); 6657 x = detector.getFocusX(); 6658 y = detector.getFocusY(); 6659 6660 cancelLongPress(); 6661 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6662 if (!mZoomManager.supportsPanDuringZoom()) { 6663 return; 6664 } 6665 mTouchMode = TOUCH_DRAG_MODE; 6666 if (mVelocityTracker == null) { 6667 mVelocityTracker = VelocityTracker.obtain(); 6668 } 6669 } 6670 } 6671 6672 int action = ev.getActionMasked(); 6673 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6674 cancelTouch(); 6675 action = MotionEvent.ACTION_DOWN; 6676 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6677 // set mLastTouchX/Y to the remaining points for multi-touch. 6678 mLastTouchX = Math.round(x); 6679 mLastTouchY = Math.round(y); 6680 } else if (action == MotionEvent.ACTION_MOVE) { 6681 // negative x or y indicate it is on the edge, skip it. 6682 if (x < 0 || y < 0) { 6683 return; 6684 } 6685 } 6686 6687 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6688 } 6689 6690 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6691 if (shouldForwardTouchEvent()) { 6692 if (removeEvents) { 6693 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6694 } 6695 TouchEventData ted = new TouchEventData(); 6696 ted.mIds = new int[1]; 6697 ted.mIds[0] = 0; 6698 ted.mPoints = new Point[1]; 6699 ted.mPoints[0] = new Point(x, y); 6700 ted.mPointsInView = new Point[1]; 6701 int viewX = contentToViewX(x) - mScrollX; 6702 int viewY = contentToViewY(y) - mScrollY; 6703 ted.mPointsInView[0] = new Point(viewX, viewY); 6704 ted.mAction = MotionEvent.ACTION_CANCEL; 6705 ted.mNativeLayer = nativeScrollableLayer( 6706 x, y, ted.mNativeLayerRect, null); 6707 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6708 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6709 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6710 6711 if (removeEvents) { 6712 // Mark this after sending the message above; we should 6713 // be willing to ignore the cancel event that we just sent. 6714 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6715 } 6716 } 6717 } 6718 6719 private void startTouch(float x, float y, long eventTime) { 6720 // Remember where the motion event started 6721 mStartTouchX = mLastTouchX = Math.round(x); 6722 mStartTouchY = mLastTouchY = Math.round(y); 6723 mLastTouchTime = eventTime; 6724 mVelocityTracker = VelocityTracker.obtain(); 6725 mSnapScrollMode = SNAP_NONE; 6726 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6727 ViewConfiguration.getTapTimeout()); 6728 } 6729 6730 private void startDrag() { 6731 WebViewCore.reducePriority(); 6732 // to get better performance, pause updating the picture 6733 WebViewCore.pauseUpdatePicture(mWebViewCore); 6734 nativeSetIsScrolling(true); 6735 6736 if (!mDragFromTextInput) { 6737 nativeHideCursor(); 6738 } 6739 6740 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6741 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6742 mZoomManager.invokeZoomPicker(); 6743 } 6744 } 6745 6746 private void doDrag(int deltaX, int deltaY) { 6747 if ((deltaX | deltaY) != 0) { 6748 int oldX = mScrollX; 6749 int oldY = mScrollY; 6750 int rangeX = computeMaxScrollX(); 6751 int rangeY = computeMaxScrollY(); 6752 int overscrollDistance = mOverscrollDistance; 6753 6754 // Check for the original scrolling layer in case we change 6755 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6756 // reached the edge of a layer but mScrollingLayer will be non-zero 6757 // if we initiated the drag on a layer. 6758 if (mCurrentScrollingLayerId != 0) { 6759 final int contentX = viewToContentDimension(deltaX); 6760 final int contentY = viewToContentDimension(deltaY); 6761 6762 // Check the scrolling bounds to see if we will actually do any 6763 // scrolling. The rectangle is in document coordinates. 6764 final int maxX = mScrollingLayerRect.right; 6765 final int maxY = mScrollingLayerRect.bottom; 6766 final int resultX = Math.max(0, 6767 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6768 final int resultY = Math.max(0, 6769 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6770 6771 if (resultX != mScrollingLayerRect.left || 6772 resultY != mScrollingLayerRect.top) { 6773 // In case we switched to dragging the page. 6774 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6775 deltaX = contentX; 6776 deltaY = contentY; 6777 oldX = mScrollingLayerRect.left; 6778 oldY = mScrollingLayerRect.top; 6779 rangeX = maxX; 6780 rangeY = maxY; 6781 } else { 6782 // Scroll the main page if we are not going to scroll the 6783 // layer. This does not reset mScrollingLayer in case the 6784 // user changes directions and the layer can scroll the 6785 // other way. 6786 mTouchMode = TOUCH_DRAG_MODE; 6787 } 6788 } 6789 6790 if (mOverScrollGlow != null) { 6791 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6792 } 6793 6794 overScrollBy(deltaX, deltaY, oldX, oldY, 6795 rangeX, rangeY, 6796 mOverscrollDistance, mOverscrollDistance, true); 6797 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6798 invalidate(); 6799 } 6800 } 6801 mZoomManager.keepZoomPickerVisible(); 6802 } 6803 6804 private void stopTouch() { 6805 if (mScroller.isFinished() && !mSelectingText 6806 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6807 WebViewCore.resumePriority(); 6808 WebViewCore.resumeUpdatePicture(mWebViewCore); 6809 nativeSetIsScrolling(false); 6810 } 6811 6812 // we also use mVelocityTracker == null to tell us that we are 6813 // not "moving around", so we can take the slower/prettier 6814 // mode in the drawing code 6815 if (mVelocityTracker != null) { 6816 mVelocityTracker.recycle(); 6817 mVelocityTracker = null; 6818 } 6819 6820 // Release any pulled glows 6821 if (mOverScrollGlow != null) { 6822 mOverScrollGlow.releaseAll(); 6823 } 6824 } 6825 6826 private void cancelTouch() { 6827 // we also use mVelocityTracker == null to tell us that we are 6828 // not "moving around", so we can take the slower/prettier 6829 // mode in the drawing code 6830 if (mVelocityTracker != null) { 6831 mVelocityTracker.recycle(); 6832 mVelocityTracker = null; 6833 } 6834 6835 if ((mTouchMode == TOUCH_DRAG_MODE 6836 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6837 WebViewCore.resumePriority(); 6838 WebViewCore.resumeUpdatePicture(mWebViewCore); 6839 nativeSetIsScrolling(false); 6840 } 6841 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6842 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6843 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6844 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6845 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6846 removeTouchHighlight(); 6847 } 6848 mHeldMotionless = MOTIONLESS_TRUE; 6849 mTouchMode = TOUCH_DONE_MODE; 6850 nativeHideCursor(); 6851 } 6852 6853 @Override 6854 public boolean onGenericMotionEvent(MotionEvent event) { 6855 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6856 switch (event.getAction()) { 6857 case MotionEvent.ACTION_SCROLL: { 6858 final float vscroll; 6859 final float hscroll; 6860 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6861 vscroll = 0; 6862 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6863 } else { 6864 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6865 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6866 } 6867 if (hscroll != 0 || vscroll != 0) { 6868 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6869 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6870 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6871 return true; 6872 } 6873 } 6874 } 6875 } 6876 } 6877 return super.onGenericMotionEvent(event); 6878 } 6879 6880 private long mTrackballFirstTime = 0; 6881 private long mTrackballLastTime = 0; 6882 private float mTrackballRemainsX = 0.0f; 6883 private float mTrackballRemainsY = 0.0f; 6884 private int mTrackballXMove = 0; 6885 private int mTrackballYMove = 0; 6886 private boolean mSelectingText = false; 6887 private boolean mSelectionStarted = false; 6888 private boolean mExtendSelection = false; 6889 private boolean mDrawSelectionPointer = false; 6890 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6891 private static final int TRACKBALL_TIMEOUT = 200; 6892 private static final int TRACKBALL_WAIT = 100; 6893 private static final int TRACKBALL_SCALE = 400; 6894 private static final int TRACKBALL_SCROLL_COUNT = 5; 6895 private static final int TRACKBALL_MOVE_COUNT = 10; 6896 private static final int TRACKBALL_MULTIPLIER = 3; 6897 private static final int SELECT_CURSOR_OFFSET = 16; 6898 private static final int SELECT_SCROLL = 5; 6899 private int mSelectX = 0; 6900 private int mSelectY = 0; 6901 private boolean mFocusSizeChanged = false; 6902 private boolean mTrackballDown = false; 6903 private long mTrackballUpTime = 0; 6904 private long mLastCursorTime = 0; 6905 private Rect mLastCursorBounds; 6906 6907 // Set by default; BrowserActivity clears to interpret trackball data 6908 // directly for movement. Currently, the framework only passes 6909 // arrow key events, not trackball events, from one child to the next 6910 private boolean mMapTrackballToArrowKeys = true; 6911 6912 private DrawData mDelaySetPicture; 6913 private DrawData mLoadedPicture; 6914 6915 public void setMapTrackballToArrowKeys(boolean setMap) { 6916 checkThread(); 6917 mMapTrackballToArrowKeys = setMap; 6918 } 6919 6920 void resetTrackballTime() { 6921 mTrackballLastTime = 0; 6922 } 6923 6924 @Override 6925 public boolean onTrackballEvent(MotionEvent ev) { 6926 long time = ev.getEventTime(); 6927 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6928 if (ev.getY() > 0) pageDown(true); 6929 if (ev.getY() < 0) pageUp(true); 6930 return true; 6931 } 6932 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6933 if (mSelectingText) { 6934 return true; // discard press if copy in progress 6935 } 6936 mTrackballDown = true; 6937 if (mNativeClass == 0) { 6938 return false; 6939 } 6940 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6941 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6942 nativeSelectBestAt(mLastCursorBounds); 6943 } 6944 if (DebugFlags.WEB_VIEW) { 6945 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6946 + " time=" + time 6947 + " mLastCursorTime=" + mLastCursorTime); 6948 } 6949 if (isInTouchMode()) requestFocusFromTouch(); 6950 return false; // let common code in onKeyDown at it 6951 } 6952 if (ev.getAction() == MotionEvent.ACTION_UP) { 6953 // LONG_PRESS_CENTER is set in common onKeyDown 6954 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6955 mTrackballDown = false; 6956 mTrackballUpTime = time; 6957 if (mSelectingText) { 6958 if (mExtendSelection) { 6959 copySelection(); 6960 selectionDone(); 6961 } else { 6962 mExtendSelection = true; 6963 nativeSetExtendSelection(); 6964 invalidate(); // draw the i-beam instead of the arrow 6965 } 6966 return true; // discard press if copy in progress 6967 } 6968 if (DebugFlags.WEB_VIEW) { 6969 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6970 + " time=" + time 6971 ); 6972 } 6973 return false; // let common code in onKeyUp at it 6974 } 6975 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6976 AccessibilityManager.getInstance(mContext).isEnabled()) { 6977 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6978 return false; 6979 } 6980 if (mTrackballDown) { 6981 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6982 return true; // discard move if trackball is down 6983 } 6984 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6985 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6986 return true; 6987 } 6988 // TODO: alternatively we can do panning as touch does 6989 switchOutDrawHistory(); 6990 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6991 if (DebugFlags.WEB_VIEW) { 6992 Log.v(LOGTAG, "onTrackballEvent time=" 6993 + time + " last=" + mTrackballLastTime); 6994 } 6995 mTrackballFirstTime = time; 6996 mTrackballXMove = mTrackballYMove = 0; 6997 } 6998 mTrackballLastTime = time; 6999 if (DebugFlags.WEB_VIEW) { 7000 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 7001 } 7002 mTrackballRemainsX += ev.getX(); 7003 mTrackballRemainsY += ev.getY(); 7004 doTrackball(time, ev.getMetaState()); 7005 return true; 7006 } 7007 7008 void moveSelection(float xRate, float yRate) { 7009 if (mNativeClass == 0) 7010 return; 7011 int width = getViewWidth(); 7012 int height = getViewHeight(); 7013 mSelectX += xRate; 7014 mSelectY += yRate; 7015 int maxX = width + mScrollX; 7016 int maxY = height + mScrollY; 7017 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 7018 , mSelectX)); 7019 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 7020 , mSelectY)); 7021 if (DebugFlags.WEB_VIEW) { 7022 Log.v(LOGTAG, "moveSelection" 7023 + " mSelectX=" + mSelectX 7024 + " mSelectY=" + mSelectY 7025 + " mScrollX=" + mScrollX 7026 + " mScrollY=" + mScrollY 7027 + " xRate=" + xRate 7028 + " yRate=" + yRate 7029 ); 7030 } 7031 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 7032 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 7033 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 7034 : 0; 7035 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 7036 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 7037 : 0; 7038 pinScrollBy(scrollX, scrollY, true, 0); 7039 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 7040 requestRectangleOnScreen(select); 7041 invalidate(); 7042 } 7043 7044 private int scaleTrackballX(float xRate, int width) { 7045 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 7046 int nextXMove = xMove; 7047 if (xMove > 0) { 7048 if (xMove > mTrackballXMove) { 7049 xMove -= mTrackballXMove; 7050 } 7051 } else if (xMove < mTrackballXMove) { 7052 xMove -= mTrackballXMove; 7053 } 7054 mTrackballXMove = nextXMove; 7055 return xMove; 7056 } 7057 7058 private int scaleTrackballY(float yRate, int height) { 7059 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7060 int nextYMove = yMove; 7061 if (yMove > 0) { 7062 if (yMove > mTrackballYMove) { 7063 yMove -= mTrackballYMove; 7064 } 7065 } else if (yMove < mTrackballYMove) { 7066 yMove -= mTrackballYMove; 7067 } 7068 mTrackballYMove = nextYMove; 7069 return yMove; 7070 } 7071 7072 private int keyCodeToSoundsEffect(int keyCode) { 7073 switch(keyCode) { 7074 case KeyEvent.KEYCODE_DPAD_UP: 7075 return SoundEffectConstants.NAVIGATION_UP; 7076 case KeyEvent.KEYCODE_DPAD_RIGHT: 7077 return SoundEffectConstants.NAVIGATION_RIGHT; 7078 case KeyEvent.KEYCODE_DPAD_DOWN: 7079 return SoundEffectConstants.NAVIGATION_DOWN; 7080 case KeyEvent.KEYCODE_DPAD_LEFT: 7081 return SoundEffectConstants.NAVIGATION_LEFT; 7082 } 7083 throw new IllegalArgumentException("keyCode must be one of " + 7084 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7085 "KEYCODE_DPAD_LEFT}."); 7086 } 7087 7088 private void doTrackball(long time, int metaState) { 7089 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7090 if (elapsed == 0) { 7091 elapsed = TRACKBALL_TIMEOUT; 7092 } 7093 float xRate = mTrackballRemainsX * 1000 / elapsed; 7094 float yRate = mTrackballRemainsY * 1000 / elapsed; 7095 int viewWidth = getViewWidth(); 7096 int viewHeight = getViewHeight(); 7097 if (mSelectingText) { 7098 if (!mDrawSelectionPointer) { 7099 // The last selection was made by touch, disabling drawing the 7100 // selection pointer. Allow the trackball to adjust the 7101 // position of the touch control. 7102 mSelectX = contentToViewX(nativeSelectionX()); 7103 mSelectY = contentToViewY(nativeSelectionY()); 7104 mDrawSelectionPointer = mExtendSelection = true; 7105 nativeSetExtendSelection(); 7106 } 7107 moveSelection(scaleTrackballX(xRate, viewWidth), 7108 scaleTrackballY(yRate, viewHeight)); 7109 mTrackballRemainsX = mTrackballRemainsY = 0; 7110 return; 7111 } 7112 float ax = Math.abs(xRate); 7113 float ay = Math.abs(yRate); 7114 float maxA = Math.max(ax, ay); 7115 if (DebugFlags.WEB_VIEW) { 7116 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7117 + " xRate=" + xRate 7118 + " yRate=" + yRate 7119 + " mTrackballRemainsX=" + mTrackballRemainsX 7120 + " mTrackballRemainsY=" + mTrackballRemainsY); 7121 } 7122 int width = mContentWidth - viewWidth; 7123 int height = mContentHeight - viewHeight; 7124 if (width < 0) width = 0; 7125 if (height < 0) height = 0; 7126 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7127 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7128 maxA = Math.max(ax, ay); 7129 int count = Math.max(0, (int) maxA); 7130 int oldScrollX = mScrollX; 7131 int oldScrollY = mScrollY; 7132 if (count > 0) { 7133 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7134 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7135 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7136 KeyEvent.KEYCODE_DPAD_RIGHT; 7137 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7138 if (DebugFlags.WEB_VIEW) { 7139 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7140 + " count=" + count 7141 + " mTrackballRemainsX=" + mTrackballRemainsX 7142 + " mTrackballRemainsY=" + mTrackballRemainsY); 7143 } 7144 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7145 for (int i = 0; i < count; i++) { 7146 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7147 } 7148 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7149 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7150 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7151 } 7152 mTrackballRemainsX = mTrackballRemainsY = 0; 7153 } 7154 if (count >= TRACKBALL_SCROLL_COUNT) { 7155 int xMove = scaleTrackballX(xRate, width); 7156 int yMove = scaleTrackballY(yRate, height); 7157 if (DebugFlags.WEB_VIEW) { 7158 Log.v(LOGTAG, "doTrackball pinScrollBy" 7159 + " count=" + count 7160 + " xMove=" + xMove + " yMove=" + yMove 7161 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7162 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7163 ); 7164 } 7165 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7166 xMove = 0; 7167 } 7168 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7169 yMove = 0; 7170 } 7171 if (xMove != 0 || yMove != 0) { 7172 pinScrollBy(xMove, yMove, true, 0); 7173 } 7174 } 7175 } 7176 7177 /** 7178 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7179 * @return Maximum horizontal scroll position within real content 7180 */ 7181 int computeMaxScrollX() { 7182 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7183 } 7184 7185 /** 7186 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7187 * @return Maximum vertical scroll position within real content 7188 */ 7189 int computeMaxScrollY() { 7190 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7191 - getViewHeightWithTitle(), 0); 7192 } 7193 7194 boolean updateScrollCoordinates(int x, int y) { 7195 int oldX = mScrollX; 7196 int oldY = mScrollY; 7197 mScrollX = x; 7198 mScrollY = y; 7199 if (oldX != mScrollX || oldY != mScrollY) { 7200 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7201 return true; 7202 } else { 7203 return false; 7204 } 7205 } 7206 7207 public void flingScroll(int vx, int vy) { 7208 checkThread(); 7209 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7210 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7211 invalidate(); 7212 } 7213 7214 private void doFling() { 7215 if (mVelocityTracker == null) { 7216 return; 7217 } 7218 int maxX = computeMaxScrollX(); 7219 int maxY = computeMaxScrollY(); 7220 7221 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7222 int vx = (int) mVelocityTracker.getXVelocity(); 7223 int vy = (int) mVelocityTracker.getYVelocity(); 7224 7225 int scrollX = mScrollX; 7226 int scrollY = mScrollY; 7227 int overscrollDistance = mOverscrollDistance; 7228 int overflingDistance = mOverflingDistance; 7229 7230 // Use the layer's scroll data if applicable. 7231 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7232 scrollX = mScrollingLayerRect.left; 7233 scrollY = mScrollingLayerRect.top; 7234 maxX = mScrollingLayerRect.right; 7235 maxY = mScrollingLayerRect.bottom; 7236 // No overscrolling for layers. 7237 overscrollDistance = overflingDistance = 0; 7238 } 7239 7240 if (mSnapScrollMode != SNAP_NONE) { 7241 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7242 vy = 0; 7243 } else { 7244 vx = 0; 7245 } 7246 } 7247 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7248 WebViewCore.resumePriority(); 7249 if (!mSelectingText) { 7250 WebViewCore.resumeUpdatePicture(mWebViewCore); 7251 } 7252 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7253 invalidate(); 7254 } 7255 return; 7256 } 7257 float currentVelocity = mScroller.getCurrVelocity(); 7258 float velocity = (float) Math.hypot(vx, vy); 7259 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7260 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7261 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7262 - Math.atan2(vy, vx))); 7263 final float circle = (float) (Math.PI) * 2.0f; 7264 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7265 vx += currentVelocity * mLastVelX / mLastVelocity; 7266 vy += currentVelocity * mLastVelY / mLastVelocity; 7267 velocity = (float) Math.hypot(vx, vy); 7268 if (DebugFlags.WEB_VIEW) { 7269 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7270 } 7271 } else if (DebugFlags.WEB_VIEW) { 7272 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7273 } 7274 } else if (DebugFlags.WEB_VIEW) { 7275 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7276 + " current=" + currentVelocity 7277 + " vx=" + vx + " vy=" + vy 7278 + " maxX=" + maxX + " maxY=" + maxY 7279 + " scrollX=" + scrollX + " scrollY=" + scrollY 7280 + " layer=" + mCurrentScrollingLayerId); 7281 } 7282 7283 // Allow sloppy flings without overscrolling at the edges. 7284 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7285 vx = 0; 7286 } 7287 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7288 vy = 0; 7289 } 7290 7291 if (overscrollDistance < overflingDistance) { 7292 if ((vx > 0 && scrollX == -overscrollDistance) || 7293 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7294 vx = 0; 7295 } 7296 if ((vy > 0 && scrollY == -overscrollDistance) || 7297 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7298 vy = 0; 7299 } 7300 } 7301 7302 mLastVelX = vx; 7303 mLastVelY = vy; 7304 mLastVelocity = velocity; 7305 7306 // no horizontal overscroll if the content just fits 7307 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7308 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7309 // Duration is calculated based on velocity. With range boundaries and overscroll 7310 // we may not know how long the final animation will take. (Hence the deprecation 7311 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7312 // resumes during this effect we will take a performance hit. See computeScroll; 7313 // we resume webcore there when the animation is finished. 7314 final int time = mScroller.getDuration(); 7315 7316 // Suppress scrollbars for layer scrolling. 7317 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7318 awakenScrollBars(time); 7319 } 7320 7321 invalidate(); 7322 } 7323 7324 /** 7325 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7326 * in charge of installing this view to the view hierarchy. This view will 7327 * become visible when the user starts scrolling via touch and fade away if 7328 * the user does not interact with it. 7329 * <p/> 7330 * API version 3 introduces a built-in zoom mechanism that is shown 7331 * automatically by the MapView. This is the preferred approach for 7332 * showing the zoom UI. 7333 * 7334 * @deprecated The built-in zoom mechanism is preferred, see 7335 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7336 */ 7337 @Deprecated 7338 public View getZoomControls() { 7339 checkThread(); 7340 if (!getSettings().supportZoom()) { 7341 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7342 return null; 7343 } 7344 return mZoomManager.getExternalZoomPicker(); 7345 } 7346 7347 void dismissZoomControl() { 7348 mZoomManager.dismissZoomPicker(); 7349 } 7350 7351 float getDefaultZoomScale() { 7352 return mZoomManager.getDefaultScale(); 7353 } 7354 7355 /** 7356 * Return the overview scale of the WebView 7357 * @return The overview scale. 7358 */ 7359 float getZoomOverviewScale() { 7360 return mZoomManager.getZoomOverviewScale(); 7361 } 7362 7363 /** 7364 * @return TRUE if the WebView can be zoomed in. 7365 */ 7366 public boolean canZoomIn() { 7367 checkThread(); 7368 return mZoomManager.canZoomIn(); 7369 } 7370 7371 /** 7372 * @return TRUE if the WebView can be zoomed out. 7373 */ 7374 public boolean canZoomOut() { 7375 checkThread(); 7376 return mZoomManager.canZoomOut(); 7377 } 7378 7379 /** 7380 * Perform zoom in in the webview 7381 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7382 */ 7383 public boolean zoomIn() { 7384 checkThread(); 7385 return mZoomManager.zoomIn(); 7386 } 7387 7388 /** 7389 * Perform zoom out in the webview 7390 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7391 */ 7392 public boolean zoomOut() { 7393 checkThread(); 7394 return mZoomManager.zoomOut(); 7395 } 7396 7397 /** 7398 * This selects the best clickable target at mLastTouchX and mLastTouchY 7399 * and calls showCursorTimed on the native side 7400 */ 7401 private void updateSelection() { 7402 if (mNativeClass == 0) { 7403 return; 7404 } 7405 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7406 // mLastTouchX and mLastTouchY are the point in the current viewport 7407 int contentX = viewToContentX(mLastTouchX + mScrollX); 7408 int contentY = viewToContentY(mLastTouchY + mScrollY); 7409 int slop = viewToContentDimension(mNavSlop); 7410 Rect rect = new Rect(contentX - slop, contentY - slop, 7411 contentX + slop, contentY + slop); 7412 nativeSelectBestAt(rect); 7413 mInitialHitTestResult = hitTestResult(null); 7414 } 7415 7416 /** 7417 * Scroll the focused text field to match the WebTextView 7418 * @param xPercent New x position of the WebTextView from 0 to 1. 7419 */ 7420 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7421 if (!inEditingMode() || mWebViewCore == null) { 7422 return; 7423 } 7424 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7425 new Float(xPercent)); 7426 } 7427 7428 /** 7429 * Scroll the focused textarea vertically to match the WebTextView 7430 * @param y New y position of the WebTextView in view coordinates 7431 */ 7432 /* package */ void scrollFocusedTextInputY(int y) { 7433 if (!inEditingMode() || mWebViewCore == null) { 7434 return; 7435 } 7436 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7437 } 7438 7439 /** 7440 * Set our starting point and time for a drag from the WebTextView. 7441 */ 7442 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7443 if (!inEditingMode()) { 7444 return; 7445 } 7446 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7447 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7448 mLastTouchTime = eventTime; 7449 if (!mScroller.isFinished()) { 7450 abortAnimation(); 7451 } 7452 mSnapScrollMode = SNAP_NONE; 7453 mVelocityTracker = VelocityTracker.obtain(); 7454 mTouchMode = TOUCH_DRAG_START_MODE; 7455 } 7456 7457 /** 7458 * Given a motion event from the WebTextView, set its location to our 7459 * coordinates, and handle the event. 7460 */ 7461 /*package*/ boolean textFieldDrag(MotionEvent event) { 7462 if (!inEditingMode()) { 7463 return false; 7464 } 7465 mDragFromTextInput = true; 7466 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7467 (float) (mWebTextView.getTop() - mScrollY)); 7468 boolean result = onTouchEvent(event); 7469 mDragFromTextInput = false; 7470 return result; 7471 } 7472 7473 /** 7474 * Due a touch up from a WebTextView. This will be handled by webkit to 7475 * change the selection. 7476 * @param event MotionEvent in the WebTextView's coordinates. 7477 */ 7478 /*package*/ void touchUpOnTextField(MotionEvent event) { 7479 if (!inEditingMode()) { 7480 return; 7481 } 7482 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7483 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7484 int slop = viewToContentDimension(mNavSlop); 7485 nativeMotionUp(x, y, slop); 7486 } 7487 7488 /** 7489 * Called when pressing the center key or trackball on a textfield. 7490 */ 7491 /*package*/ void centerKeyPressOnTextField() { 7492 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7493 nativeCursorNodePointer()); 7494 } 7495 7496 private void doShortPress() { 7497 if (mNativeClass == 0) { 7498 return; 7499 } 7500 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7501 return; 7502 } 7503 mTouchMode = TOUCH_DONE_MODE; 7504 updateSelection(); 7505 switchOutDrawHistory(); 7506 // mLastTouchX and mLastTouchY are the point in the current viewport 7507 int contentX = viewToContentX(mLastTouchX + mScrollX); 7508 int contentY = viewToContentY(mLastTouchY + mScrollY); 7509 int slop = viewToContentDimension(mNavSlop); 7510 if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) { 7511 // set mTouchHighlightRequested to 0 to cause an immediate 7512 // drawing of the touch rings 7513 mTouchHighlightRequested = 0; 7514 invalidate(mTouchHighlightRegion.getBounds()); 7515 mPrivateHandler.postDelayed(new Runnable() { 7516 @Override 7517 public void run() { 7518 removeTouchHighlight(); 7519 } 7520 }, ViewConfiguration.getPressedStateDuration()); 7521 } 7522 if (getSettings().supportTouchOnly()) { 7523 removeTouchHighlight(); 7524 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7525 // use "0" as generation id to inform WebKit to use the same x/y as 7526 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7527 touchUpData.mMoveGeneration = 0; 7528 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7529 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7530 WebViewCore.MotionUpData motionUpData = new WebViewCore 7531 .MotionUpData(); 7532 motionUpData.mFrame = nativeCacheHitFramePointer(); 7533 motionUpData.mNode = nativeCacheHitNodePointer(); 7534 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7535 motionUpData.mX = contentX; 7536 motionUpData.mY = contentY; 7537 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7538 motionUpData); 7539 } else { 7540 doMotionUp(contentX, contentY); 7541 } 7542 } 7543 7544 private void doMotionUp(int contentX, int contentY) { 7545 int slop = viewToContentDimension(mNavSlop); 7546 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7547 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7548 } 7549 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7550 playSoundEffect(SoundEffectConstants.CLICK); 7551 } 7552 } 7553 7554 void sendPluginDrawMsg() { 7555 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7556 } 7557 7558 /** 7559 * Returns plugin bounds if x/y in content coordinates corresponds to a 7560 * plugin. Otherwise a NULL rectangle is returned. 7561 */ 7562 Rect getPluginBounds(int x, int y) { 7563 int slop = viewToContentDimension(mNavSlop); 7564 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7565 return nativeCacheHitNodeBounds(); 7566 } else { 7567 return null; 7568 } 7569 } 7570 7571 /* 7572 * Return true if the rect (e.g. plugin) is fully visible and maximized 7573 * inside the WebView. 7574 */ 7575 boolean isRectFitOnScreen(Rect rect) { 7576 final int rectWidth = rect.width(); 7577 final int rectHeight = rect.height(); 7578 final int viewWidth = getViewWidth(); 7579 final int viewHeight = getViewHeightWithTitle(); 7580 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7581 scale = mZoomManager.computeScaleWithLimits(scale); 7582 return !mZoomManager.willScaleTriggerZoom(scale) 7583 && contentToViewX(rect.left) >= mScrollX 7584 && contentToViewX(rect.right) <= mScrollX + viewWidth 7585 && contentToViewY(rect.top) >= mScrollY 7586 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7587 } 7588 7589 /* 7590 * Maximize and center the rectangle, specified in the document coordinate 7591 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7592 * animated scroll to center it. If the zoom needs to be changed, find the 7593 * zoom center and do a smooth zoom transition. The rect is in document 7594 * coordinates 7595 */ 7596 void centerFitRect(Rect rect) { 7597 final int rectWidth = rect.width(); 7598 final int rectHeight = rect.height(); 7599 final int viewWidth = getViewWidth(); 7600 final int viewHeight = getViewHeightWithTitle(); 7601 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7602 / rectHeight); 7603 scale = mZoomManager.computeScaleWithLimits(scale); 7604 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7605 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7606 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7607 true, 0); 7608 } else { 7609 float actualScale = mZoomManager.getScale(); 7610 float oldScreenX = rect.left * actualScale - mScrollX; 7611 float rectViewX = rect.left * scale; 7612 float rectViewWidth = rectWidth * scale; 7613 float newMaxWidth = mContentWidth * scale; 7614 float newScreenX = (viewWidth - rectViewWidth) / 2; 7615 // pin the newX to the WebView 7616 if (newScreenX > rectViewX) { 7617 newScreenX = rectViewX; 7618 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7619 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7620 } 7621 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7622 / (scale - actualScale); 7623 float oldScreenY = rect.top * actualScale + getTitleHeight() 7624 - mScrollY; 7625 float rectViewY = rect.top * scale + getTitleHeight(); 7626 float rectViewHeight = rectHeight * scale; 7627 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7628 float newScreenY = (viewHeight - rectViewHeight) / 2; 7629 // pin the newY to the WebView 7630 if (newScreenY > rectViewY) { 7631 newScreenY = rectViewY; 7632 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7633 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7634 } 7635 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7636 / (scale - actualScale); 7637 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7638 mZoomManager.startZoomAnimation(scale, false); 7639 } 7640 } 7641 7642 // Called by JNI to handle a touch on a node representing an email address, 7643 // address, or phone number 7644 private void overrideLoading(String url) { 7645 mCallbackProxy.uiOverrideUrlLoading(url); 7646 } 7647 7648 @Override 7649 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7650 // FIXME: If a subwindow is showing find, and the user touches the 7651 // background window, it can steal focus. 7652 if (mFindIsUp) return false; 7653 boolean result = false; 7654 if (inEditingMode()) { 7655 result = mWebTextView.requestFocus(direction, 7656 previouslyFocusedRect); 7657 } else { 7658 result = super.requestFocus(direction, previouslyFocusedRect); 7659 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7660 // For cases such as GMail, where we gain focus from a direction, 7661 // we want to move to the first available link. 7662 // FIXME: If there are no visible links, we may not want to 7663 int fakeKeyDirection = 0; 7664 switch(direction) { 7665 case View.FOCUS_UP: 7666 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7667 break; 7668 case View.FOCUS_DOWN: 7669 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7670 break; 7671 case View.FOCUS_LEFT: 7672 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7673 break; 7674 case View.FOCUS_RIGHT: 7675 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7676 break; 7677 default: 7678 return result; 7679 } 7680 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7681 navHandledKey(fakeKeyDirection, 1, true, 0); 7682 } 7683 } 7684 } 7685 return result; 7686 } 7687 7688 @Override 7689 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7690 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7691 7692 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7693 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7694 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7695 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7696 7697 int measuredHeight = heightSize; 7698 int measuredWidth = widthSize; 7699 7700 // Grab the content size from WebViewCore. 7701 int contentHeight = contentToViewDimension(mContentHeight); 7702 int contentWidth = contentToViewDimension(mContentWidth); 7703 7704// Log.d(LOGTAG, "------- measure " + heightMode); 7705 7706 if (heightMode != MeasureSpec.EXACTLY) { 7707 mHeightCanMeasure = true; 7708 measuredHeight = contentHeight; 7709 if (heightMode == MeasureSpec.AT_MOST) { 7710 // If we are larger than the AT_MOST height, then our height can 7711 // no longer be measured and we should scroll internally. 7712 if (measuredHeight > heightSize) { 7713 measuredHeight = heightSize; 7714 mHeightCanMeasure = false; 7715 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7716 } 7717 } 7718 } else { 7719 mHeightCanMeasure = false; 7720 } 7721 if (mNativeClass != 0) { 7722 nativeSetHeightCanMeasure(mHeightCanMeasure); 7723 } 7724 // For the width, always use the given size unless unspecified. 7725 if (widthMode == MeasureSpec.UNSPECIFIED) { 7726 mWidthCanMeasure = true; 7727 measuredWidth = contentWidth; 7728 } else { 7729 if (measuredWidth < contentWidth) { 7730 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7731 } 7732 mWidthCanMeasure = false; 7733 } 7734 7735 synchronized (this) { 7736 setMeasuredDimension(measuredWidth, measuredHeight); 7737 } 7738 } 7739 7740 @Override 7741 public boolean requestChildRectangleOnScreen(View child, 7742 Rect rect, 7743 boolean immediate) { 7744 if (mNativeClass == 0) { 7745 return false; 7746 } 7747 // don't scroll while in zoom animation. When it is done, we will adjust 7748 // the necessary components (e.g., WebTextView if it is in editing mode) 7749 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7750 return false; 7751 } 7752 7753 rect.offset(child.getLeft() - child.getScrollX(), 7754 child.getTop() - child.getScrollY()); 7755 7756 Rect content = new Rect(viewToContentX(mScrollX), 7757 viewToContentY(mScrollY), 7758 viewToContentX(mScrollX + getWidth() 7759 - getVerticalScrollbarWidth()), 7760 viewToContentY(mScrollY + getViewHeightWithTitle())); 7761 content = nativeSubtractLayers(content); 7762 int screenTop = contentToViewY(content.top); 7763 int screenBottom = contentToViewY(content.bottom); 7764 int height = screenBottom - screenTop; 7765 int scrollYDelta = 0; 7766 7767 if (rect.bottom > screenBottom) { 7768 int oneThirdOfScreenHeight = height / 3; 7769 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7770 // If the rectangle is too tall to fit in the bottom two thirds 7771 // of the screen, place it at the top. 7772 scrollYDelta = rect.top - screenTop; 7773 } else { 7774 // If the rectangle will still fit on screen, we want its 7775 // top to be in the top third of the screen. 7776 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7777 } 7778 } else if (rect.top < screenTop) { 7779 scrollYDelta = rect.top - screenTop; 7780 } 7781 7782 int screenLeft = contentToViewX(content.left); 7783 int screenRight = contentToViewX(content.right); 7784 int width = screenRight - screenLeft; 7785 int scrollXDelta = 0; 7786 7787 if (rect.right > screenRight && rect.left > screenLeft) { 7788 if (rect.width() > width) { 7789 scrollXDelta += (rect.left - screenLeft); 7790 } else { 7791 scrollXDelta += (rect.right - screenRight); 7792 } 7793 } else if (rect.left < screenLeft) { 7794 scrollXDelta -= (screenLeft - rect.left); 7795 } 7796 7797 if ((scrollYDelta | scrollXDelta) != 0) { 7798 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7799 } 7800 7801 return false; 7802 } 7803 7804 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7805 String replace, int newStart, int newEnd) { 7806 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7807 arg.mReplace = replace; 7808 arg.mNewStart = newStart; 7809 arg.mNewEnd = newEnd; 7810 mTextGeneration++; 7811 arg.mTextGeneration = mTextGeneration; 7812 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7813 } 7814 7815 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7816 // check if mWebViewCore has been destroyed 7817 if (mWebViewCore == null) { 7818 return; 7819 } 7820 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7821 arg.mEvent = event; 7822 arg.mCurrentText = currentText; 7823 // Increase our text generation number, and pass it to webcore thread 7824 mTextGeneration++; 7825 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7826 // WebKit's document state is not saved until about to leave the page. 7827 // To make sure the host application, like Browser, has the up to date 7828 // document state when it goes to background, we force to save the 7829 // document state. 7830 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7831 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7832 cursorData(), 1000); 7833 } 7834 7835 /** 7836 * @hide 7837 */ 7838 public synchronized WebViewCore getWebViewCore() { 7839 return mWebViewCore; 7840 } 7841 7842 /** 7843 * Used only by TouchEventQueue to store pending touch events. 7844 */ 7845 private static class QueuedTouch { 7846 long mSequence; 7847 MotionEvent mEvent; // Optional 7848 TouchEventData mTed; // Optional 7849 7850 QueuedTouch mNext; 7851 7852 public QueuedTouch set(TouchEventData ted) { 7853 mSequence = ted.mSequence; 7854 mTed = ted; 7855 mEvent = null; 7856 mNext = null; 7857 return this; 7858 } 7859 7860 public QueuedTouch set(MotionEvent ev, long sequence) { 7861 mEvent = MotionEvent.obtain(ev); 7862 mSequence = sequence; 7863 mTed = null; 7864 mNext = null; 7865 return this; 7866 } 7867 7868 public QueuedTouch add(QueuedTouch other) { 7869 if (other.mSequence < mSequence) { 7870 other.mNext = this; 7871 return other; 7872 } 7873 7874 QueuedTouch insertAt = this; 7875 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7876 insertAt = insertAt.mNext; 7877 } 7878 other.mNext = insertAt.mNext; 7879 insertAt.mNext = other; 7880 return this; 7881 } 7882 } 7883 7884 /** 7885 * WebView handles touch events asynchronously since some events must be passed to WebKit 7886 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7887 * of which path they take to ensure that no events are ever processed out of order 7888 * by WebView. 7889 */ 7890 private class TouchEventQueue { 7891 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7892 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7893 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7894 7895 // Events waiting to be processed. 7896 private QueuedTouch mTouchEventQueue; 7897 7898 // Known events that are waiting on a response before being enqueued. 7899 private QueuedTouch mPreQueue; 7900 7901 // Pool of QueuedTouch objects saved for later use. 7902 private QueuedTouch mQueuedTouchRecycleBin; 7903 private int mQueuedTouchRecycleCount; 7904 7905 private long mLastEventTime = Long.MAX_VALUE; 7906 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7907 7908 // milliseconds until we abandon hope of getting all of a previous gesture 7909 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7910 7911 private QueuedTouch obtainQueuedTouch() { 7912 if (mQueuedTouchRecycleBin != null) { 7913 QueuedTouch result = mQueuedTouchRecycleBin; 7914 mQueuedTouchRecycleBin = result.mNext; 7915 mQueuedTouchRecycleCount--; 7916 return result; 7917 } 7918 return new QueuedTouch(); 7919 } 7920 7921 /** 7922 * Allow events with any currently missing sequence numbers to be skipped in processing. 7923 */ 7924 public void ignoreCurrentlyMissingEvents() { 7925 mIgnoreUntilSequence = mNextTouchSequence; 7926 7927 // Run any events we have available and complete, pre-queued or otherwise. 7928 runQueuedAndPreQueuedEvents(); 7929 } 7930 7931 private void runQueuedAndPreQueuedEvents() { 7932 QueuedTouch qd = mPreQueue; 7933 boolean fromPreQueue = true; 7934 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7935 handleQueuedTouch(qd); 7936 QueuedTouch recycleMe = qd; 7937 if (fromPreQueue) { 7938 mPreQueue = qd.mNext; 7939 } else { 7940 mTouchEventQueue = qd.mNext; 7941 } 7942 recycleQueuedTouch(recycleMe); 7943 mLastHandledTouchSequence++; 7944 7945 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7946 long nextQueued = mTouchEventQueue != null ? 7947 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7948 fromPreQueue = nextPre < nextQueued; 7949 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7950 } 7951 } 7952 7953 /** 7954 * Add a TouchEventData to the pre-queue. 7955 * 7956 * An event in the pre-queue is an event that we know about that 7957 * has been sent to webkit, but that we haven't received back and 7958 * enqueued into the normal touch queue yet. If webkit ever times 7959 * out and we need to ignore currently missing events, we'll run 7960 * events from the pre-queue to patch the holes. 7961 * 7962 * @param ted TouchEventData to pre-queue 7963 */ 7964 public void preQueueTouchEventData(TouchEventData ted) { 7965 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7966 if (mPreQueue == null) { 7967 mPreQueue = newTouch; 7968 } else { 7969 QueuedTouch insertionPoint = mPreQueue; 7970 while (insertionPoint.mNext != null && 7971 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7972 insertionPoint = insertionPoint.mNext; 7973 } 7974 newTouch.mNext = insertionPoint.mNext; 7975 insertionPoint.mNext = newTouch; 7976 } 7977 } 7978 7979 private void recycleQueuedTouch(QueuedTouch qd) { 7980 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7981 qd.mNext = mQueuedTouchRecycleBin; 7982 mQueuedTouchRecycleBin = qd; 7983 mQueuedTouchRecycleCount++; 7984 } 7985 } 7986 7987 /** 7988 * Reset the touch event queue. This will dump any pending events 7989 * and reset the sequence numbering. 7990 */ 7991 public void reset() { 7992 mNextTouchSequence = Long.MIN_VALUE + 1; 7993 mLastHandledTouchSequence = Long.MIN_VALUE; 7994 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7995 while (mTouchEventQueue != null) { 7996 QueuedTouch recycleMe = mTouchEventQueue; 7997 mTouchEventQueue = mTouchEventQueue.mNext; 7998 recycleQueuedTouch(recycleMe); 7999 } 8000 while (mPreQueue != null) { 8001 QueuedTouch recycleMe = mPreQueue; 8002 mPreQueue = mPreQueue.mNext; 8003 recycleQueuedTouch(recycleMe); 8004 } 8005 } 8006 8007 /** 8008 * Return the next valid sequence number for tagging incoming touch events. 8009 * @return The next touch event sequence number 8010 */ 8011 public long nextTouchSequence() { 8012 return mNextTouchSequence++; 8013 } 8014 8015 /** 8016 * Enqueue a touch event in the form of TouchEventData. 8017 * The sequence number will be read from the mSequence field of the argument. 8018 * 8019 * If the touch event's sequence number is the next in line to be processed, it will 8020 * be handled before this method returns. Any subsequent events that have already 8021 * been queued will also be processed in their proper order. 8022 * 8023 * @param ted Touch data to be processed in order. 8024 * @return true if the event was processed before returning, false if it was just enqueued. 8025 */ 8026 public boolean enqueueTouchEvent(TouchEventData ted) { 8027 // Remove from the pre-queue if present 8028 QueuedTouch preQueue = mPreQueue; 8029 if (preQueue != null) { 8030 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 8031 // if it was present in the pre-queue, and removed from the pre-queue itself. 8032 if (preQueue.mSequence == ted.mSequence) { 8033 mPreQueue = preQueue.mNext; 8034 } else { 8035 QueuedTouch prev = preQueue; 8036 preQueue = null; 8037 while (prev.mNext != null) { 8038 if (prev.mNext.mSequence == ted.mSequence) { 8039 preQueue = prev.mNext; 8040 prev.mNext = preQueue.mNext; 8041 break; 8042 } else { 8043 prev = prev.mNext; 8044 } 8045 } 8046 } 8047 } 8048 8049 if (ted.mSequence < mLastHandledTouchSequence) { 8050 // Stale event and we already moved on; drop it. (Should not be common.) 8051 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8052 " received from webcore; ignoring"); 8053 return false; 8054 } 8055 8056 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8057 return false; 8058 } 8059 8060 // dropStaleGestures above might have fast-forwarded us to 8061 // an event we have already. 8062 runNextQueuedEvents(); 8063 8064 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8065 if (preQueue != null) { 8066 recycleQueuedTouch(preQueue); 8067 preQueue = null; 8068 } 8069 handleQueuedTouchEventData(ted); 8070 8071 mLastHandledTouchSequence++; 8072 8073 // Do we have any more? Run them if so. 8074 runNextQueuedEvents(); 8075 } else { 8076 // Reuse the pre-queued object if we had it. 8077 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8078 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8079 } 8080 return true; 8081 } 8082 8083 /** 8084 * Enqueue a touch event in the form of a MotionEvent from the framework. 8085 * 8086 * If the touch event's sequence number is the next in line to be processed, it will 8087 * be handled before this method returns. Any subsequent events that have already 8088 * been queued will also be processed in their proper order. 8089 * 8090 * @param ev MotionEvent to be processed in order 8091 */ 8092 public void enqueueTouchEvent(MotionEvent ev) { 8093 final long sequence = nextTouchSequence(); 8094 8095 if (dropStaleGestures(ev, sequence)) { 8096 return; 8097 } 8098 8099 // dropStaleGestures above might have fast-forwarded us to 8100 // an event we have already. 8101 runNextQueuedEvents(); 8102 8103 if (mLastHandledTouchSequence + 1 == sequence) { 8104 handleQueuedMotionEvent(ev); 8105 8106 mLastHandledTouchSequence++; 8107 8108 // Do we have any more? Run them if so. 8109 runNextQueuedEvents(); 8110 } else { 8111 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8112 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8113 } 8114 } 8115 8116 private void runNextQueuedEvents() { 8117 QueuedTouch qd = mTouchEventQueue; 8118 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8119 handleQueuedTouch(qd); 8120 QueuedTouch recycleMe = qd; 8121 qd = qd.mNext; 8122 recycleQueuedTouch(recycleMe); 8123 mLastHandledTouchSequence++; 8124 } 8125 mTouchEventQueue = qd; 8126 } 8127 8128 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8129 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8130 // This is to make sure that we don't attempt to process a tap 8131 // or long press when webkit takes too long to get back to us. 8132 // The movement will be properly confirmed when we process the 8133 // enqueued event later. 8134 final int dx = Math.round(ev.getX()) - mLastTouchX; 8135 final int dy = Math.round(ev.getY()) - mLastTouchY; 8136 if (dx * dx + dy * dy > mTouchSlopSquare) { 8137 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8138 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8139 } 8140 } 8141 8142 if (mTouchEventQueue == null) { 8143 return sequence <= mLastHandledTouchSequence; 8144 } 8145 8146 // If we have a new down event and it's been a while since the last event 8147 // we saw, catch up as best we can and keep going. 8148 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8149 long eventTime = ev.getEventTime(); 8150 long lastHandledEventTime = mLastEventTime; 8151 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8152 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8153 "Catching up."); 8154 runQueuedAndPreQueuedEvents(); 8155 8156 // Drop leftovers that we truly don't have. 8157 QueuedTouch qd = mTouchEventQueue; 8158 while (qd != null && qd.mSequence < sequence) { 8159 QueuedTouch recycleMe = qd; 8160 qd = qd.mNext; 8161 recycleQueuedTouch(recycleMe); 8162 } 8163 mTouchEventQueue = qd; 8164 mLastHandledTouchSequence = sequence - 1; 8165 } 8166 } 8167 8168 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8169 QueuedTouch qd = mTouchEventQueue; 8170 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8171 QueuedTouch recycleMe = qd; 8172 qd = qd.mNext; 8173 recycleQueuedTouch(recycleMe); 8174 } 8175 mTouchEventQueue = qd; 8176 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8177 } 8178 8179 if (mPreQueue != null) { 8180 // Drop stale prequeued events 8181 QueuedTouch qd = mPreQueue; 8182 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8183 QueuedTouch recycleMe = qd; 8184 qd = qd.mNext; 8185 recycleQueuedTouch(recycleMe); 8186 } 8187 mPreQueue = qd; 8188 } 8189 8190 return sequence <= mLastHandledTouchSequence; 8191 } 8192 8193 private void handleQueuedTouch(QueuedTouch qt) { 8194 if (qt.mTed != null) { 8195 handleQueuedTouchEventData(qt.mTed); 8196 } else { 8197 handleQueuedMotionEvent(qt.mEvent); 8198 qt.mEvent.recycle(); 8199 } 8200 } 8201 8202 private void handleQueuedMotionEvent(MotionEvent ev) { 8203 mLastEventTime = ev.getEventTime(); 8204 int action = ev.getActionMasked(); 8205 if (ev.getPointerCount() > 1) { // Multi-touch 8206 handleMultiTouchInWebView(ev); 8207 } else { 8208 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8209 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8210 // ScaleGestureDetector needs a consistent event stream to operate properly. 8211 // It won't take any action with fewer than two pointers, but it needs to 8212 // update internal bookkeeping state. 8213 detector.onTouchEvent(ev); 8214 } 8215 8216 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8217 } 8218 } 8219 8220 private void handleQueuedTouchEventData(TouchEventData ted) { 8221 if (ted.mMotionEvent != null) { 8222 mLastEventTime = ted.mMotionEvent.getEventTime(); 8223 } 8224 if (!ted.mReprocess) { 8225 if (ted.mAction == MotionEvent.ACTION_DOWN 8226 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8227 // if prevent default is called from WebCore, UI 8228 // will not handle the rest of the touch events any 8229 // more. 8230 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8231 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8232 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8233 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8234 // the return for the first ACTION_MOVE will decide 8235 // whether UI will handle touch or not. Currently no 8236 // support for alternating prevent default 8237 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8238 : PREVENT_DEFAULT_NO; 8239 } 8240 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8241 mTouchHighlightRegion.setEmpty(); 8242 } 8243 } else { 8244 if (ted.mPoints.length > 1) { // multi-touch 8245 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8246 mPreventDefault = PREVENT_DEFAULT_NO; 8247 handleMultiTouchInWebView(ted.mMotionEvent); 8248 } else { 8249 mPreventDefault = PREVENT_DEFAULT_YES; 8250 } 8251 return; 8252 } 8253 8254 // prevent default is not called in WebCore, so the 8255 // message needs to be reprocessed in UI 8256 if (!ted.mNativeResult) { 8257 // Following is for single touch. 8258 switch (ted.mAction) { 8259 case MotionEvent.ACTION_DOWN: 8260 mLastDeferTouchX = ted.mPointsInView[0].x; 8261 mLastDeferTouchY = ted.mPointsInView[0].y; 8262 mDeferTouchMode = TOUCH_INIT_MODE; 8263 break; 8264 case MotionEvent.ACTION_MOVE: { 8265 // no snapping in defer process 8266 int x = ted.mPointsInView[0].x; 8267 int y = ted.mPointsInView[0].y; 8268 8269 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8270 mDeferTouchMode = TOUCH_DRAG_MODE; 8271 mLastDeferTouchX = x; 8272 mLastDeferTouchY = y; 8273 startScrollingLayer(x, y); 8274 startDrag(); 8275 } 8276 int deltaX = pinLocX((int) (mScrollX 8277 + mLastDeferTouchX - x)) 8278 - mScrollX; 8279 int deltaY = pinLocY((int) (mScrollY 8280 + mLastDeferTouchY - y)) 8281 - mScrollY; 8282 doDrag(deltaX, deltaY); 8283 if (deltaX != 0) mLastDeferTouchX = x; 8284 if (deltaY != 0) mLastDeferTouchY = y; 8285 break; 8286 } 8287 case MotionEvent.ACTION_UP: 8288 case MotionEvent.ACTION_CANCEL: 8289 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8290 // no fling in defer process 8291 mScroller.springBack(mScrollX, mScrollY, 0, 8292 computeMaxScrollX(), 0, 8293 computeMaxScrollY()); 8294 invalidate(); 8295 WebViewCore.resumePriority(); 8296 WebViewCore.resumeUpdatePicture(mWebViewCore); 8297 } 8298 mDeferTouchMode = TOUCH_DONE_MODE; 8299 break; 8300 case WebViewCore.ACTION_DOUBLETAP: 8301 // doDoubleTap() needs mLastTouchX/Y as anchor 8302 mLastDeferTouchX = ted.mPointsInView[0].x; 8303 mLastDeferTouchY = ted.mPointsInView[0].y; 8304 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8305 mDeferTouchMode = TOUCH_DONE_MODE; 8306 break; 8307 case WebViewCore.ACTION_LONGPRESS: 8308 HitTestResult hitTest = getHitTestResult(); 8309 if (hitTest != null && hitTest.mType 8310 != HitTestResult.UNKNOWN_TYPE) { 8311 performLongClick(); 8312 } 8313 mDeferTouchMode = TOUCH_DONE_MODE; 8314 break; 8315 } 8316 } 8317 } 8318 } 8319 } 8320 8321 //------------------------------------------------------------------------- 8322 // Methods can be called from a separate thread, like WebViewCore 8323 // If it needs to call the View system, it has to send message. 8324 //------------------------------------------------------------------------- 8325 8326 /** 8327 * General handler to receive message coming from webkit thread 8328 */ 8329 class PrivateHandler extends Handler { 8330 @Override 8331 public void handleMessage(Message msg) { 8332 // exclude INVAL_RECT_MSG_ID since it is frequently output 8333 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8334 if (msg.what >= FIRST_PRIVATE_MSG_ID 8335 && msg.what <= LAST_PRIVATE_MSG_ID) { 8336 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8337 - FIRST_PRIVATE_MSG_ID]); 8338 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8339 && msg.what <= LAST_PACKAGE_MSG_ID) { 8340 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8341 - FIRST_PACKAGE_MSG_ID]); 8342 } else { 8343 Log.v(LOGTAG, Integer.toString(msg.what)); 8344 } 8345 } 8346 if (mWebViewCore == null) { 8347 // after WebView's destroy() is called, skip handling messages. 8348 return; 8349 } 8350 if (mBlockWebkitViewMessages 8351 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8352 // Blocking messages from webkit 8353 return; 8354 } 8355 switch (msg.what) { 8356 case REMEMBER_PASSWORD: { 8357 mDatabase.setUsernamePassword( 8358 msg.getData().getString("host"), 8359 msg.getData().getString("username"), 8360 msg.getData().getString("password")); 8361 ((Message) msg.obj).sendToTarget(); 8362 break; 8363 } 8364 case NEVER_REMEMBER_PASSWORD: { 8365 mDatabase.setUsernamePassword( 8366 msg.getData().getString("host"), null, null); 8367 ((Message) msg.obj).sendToTarget(); 8368 break; 8369 } 8370 case PREVENT_DEFAULT_TIMEOUT: { 8371 // if timeout happens, cancel it so that it won't block UI 8372 // to continue handling touch events 8373 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8374 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8375 || (msg.arg1 == MotionEvent.ACTION_MOVE 8376 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8377 cancelWebCoreTouchEvent( 8378 viewToContentX(mLastTouchX + mScrollX), 8379 viewToContentY(mLastTouchY + mScrollY), 8380 true); 8381 } 8382 break; 8383 } 8384 case SCROLL_SELECT_TEXT: { 8385 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8386 mSentAutoScrollMessage = false; 8387 break; 8388 } 8389 if (mCurrentScrollingLayerId == 0) { 8390 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8391 } else { 8392 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8393 mScrollingLayerRect.top + mAutoScrollY); 8394 } 8395 sendEmptyMessageDelayed( 8396 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8397 break; 8398 } 8399 case UPDATE_SELECTION: { 8400 if (mTouchMode == TOUCH_INIT_MODE 8401 || mTouchMode == TOUCH_SHORTPRESS_MODE 8402 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8403 updateSelection(); 8404 } 8405 break; 8406 } 8407 case SWITCH_TO_SHORTPRESS: { 8408 mInitialHitTestResult = null; // set by updateSelection() 8409 if (mTouchMode == TOUCH_INIT_MODE) { 8410 if (!getSettings().supportTouchOnly() 8411 && mPreventDefault != PREVENT_DEFAULT_YES) { 8412 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8413 updateSelection(); 8414 } else { 8415 // set to TOUCH_SHORTPRESS_MODE so that it won't 8416 // trigger double tap any more 8417 mTouchMode = TOUCH_SHORTPRESS_MODE; 8418 } 8419 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8420 mTouchMode = TOUCH_DONE_MODE; 8421 } 8422 break; 8423 } 8424 case SWITCH_TO_LONGPRESS: { 8425 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 8426 removeTouchHighlight(); 8427 } 8428 if (inFullScreenMode() || mDeferTouchProcess) { 8429 TouchEventData ted = new TouchEventData(); 8430 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8431 ted.mIds = new int[1]; 8432 ted.mIds[0] = 0; 8433 ted.mPoints = new Point[1]; 8434 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8435 viewToContentY(mLastTouchY + mScrollY)); 8436 ted.mPointsInView = new Point[1]; 8437 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8438 // metaState for long press is tricky. Should it be the 8439 // state when the press started or when the press was 8440 // released? Or some intermediary key state? For 8441 // simplicity for now, we don't set it. 8442 ted.mMetaState = 0; 8443 ted.mReprocess = mDeferTouchProcess; 8444 ted.mNativeLayer = nativeScrollableLayer( 8445 ted.mPoints[0].x, ted.mPoints[0].y, 8446 ted.mNativeLayerRect, null); 8447 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8448 mTouchEventQueue.preQueueTouchEventData(ted); 8449 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8450 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8451 mTouchMode = TOUCH_DONE_MODE; 8452 performLongClick(); 8453 } 8454 break; 8455 } 8456 case RELEASE_SINGLE_TAP: { 8457 doShortPress(); 8458 break; 8459 } 8460 case SCROLL_TO_MSG_ID: { 8461 // arg1 = animate, arg2 = onlyIfImeIsShowing 8462 // obj = Point(x, y) 8463 if (msg.arg2 == 1) { 8464 // This scroll is intended to bring the textfield into 8465 // view, but is only necessary if the IME is showing 8466 InputMethodManager imm = InputMethodManager.peekInstance(); 8467 if (imm == null || !imm.isAcceptingText() 8468 || (!imm.isActive(WebView.this) && (!inEditingMode() 8469 || !imm.isActive(mWebTextView)))) { 8470 break; 8471 } 8472 } 8473 final Point p = (Point) msg.obj; 8474 if (msg.arg1 == 1) { 8475 spawnContentScrollTo(p.x, p.y); 8476 } else { 8477 setContentScrollTo(p.x, p.y); 8478 } 8479 break; 8480 } 8481 case UPDATE_ZOOM_RANGE: { 8482 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8483 // mScrollX contains the new minPrefWidth 8484 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8485 break; 8486 } 8487 case UPDATE_ZOOM_DENSITY: { 8488 final float density = (Float) msg.obj; 8489 mZoomManager.updateDefaultZoomDensity(density); 8490 break; 8491 } 8492 case REPLACE_BASE_CONTENT: { 8493 nativeReplaceBaseContent(msg.arg1); 8494 break; 8495 } 8496 case NEW_PICTURE_MSG_ID: { 8497 // called for new content 8498 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8499 setNewPicture(draw, true); 8500 break; 8501 } 8502 case WEBCORE_INITIALIZED_MSG_ID: 8503 // nativeCreate sets mNativeClass to a non-zero value 8504 String drawableDir = BrowserFrame.getRawResFilename( 8505 BrowserFrame.DRAWABLEDIR, mContext); 8506 WindowManager windowManager = 8507 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8508 Display display = windowManager.getDefaultDisplay(); 8509 nativeCreate(msg.arg1, drawableDir, 8510 ActivityManager.isHighEndGfx(display)); 8511 if (mDelaySetPicture != null) { 8512 setNewPicture(mDelaySetPicture, true); 8513 mDelaySetPicture = null; 8514 } 8515 if (mIsPaused) { 8516 nativeSetPauseDrawing(mNativeClass, true); 8517 } 8518 break; 8519 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8520 // Make sure that the textfield is currently focused 8521 // and representing the same node as the pointer. 8522 if (inEditingMode() && 8523 mWebTextView.isSameTextField(msg.arg1)) { 8524 if (msg.arg2 == mTextGeneration) { 8525 String text = (String) msg.obj; 8526 if (null == text) { 8527 text = ""; 8528 } 8529 mWebTextView.setTextAndKeepSelection(text); 8530 } 8531 } 8532 break; 8533 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8534 displaySoftKeyboard(true); 8535 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8536 case UPDATE_TEXT_SELECTION_MSG_ID: 8537 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8538 (WebViewCore.TextSelectionData) msg.obj); 8539 break; 8540 case FORM_DID_BLUR: 8541 if (inEditingMode() 8542 && mWebTextView.isSameTextField(msg.arg1)) { 8543 hideSoftKeyboard(); 8544 } 8545 break; 8546 case RETURN_LABEL: 8547 if (inEditingMode() 8548 && mWebTextView.isSameTextField(msg.arg1)) { 8549 mWebTextView.setHint((String) msg.obj); 8550 InputMethodManager imm 8551 = InputMethodManager.peekInstance(); 8552 // The hint is propagated to the IME in 8553 // onCreateInputConnection. If the IME is already 8554 // active, restart it so that its hint text is updated. 8555 if (imm != null && imm.isActive(mWebTextView)) { 8556 imm.restartInput(mWebTextView); 8557 } 8558 } 8559 break; 8560 case UNHANDLED_NAV_KEY: 8561 navHandledKey(msg.arg1, 1, false, 0); 8562 break; 8563 case UPDATE_TEXT_ENTRY_MSG_ID: 8564 // this is sent after finishing resize in WebViewCore. Make 8565 // sure the text edit box is still on the screen. 8566 if (inEditingMode() && nativeCursorIsTextInput()) { 8567 updateWebTextViewPosition(); 8568 } 8569 break; 8570 case CLEAR_TEXT_ENTRY: 8571 clearTextEntry(); 8572 break; 8573 case INVAL_RECT_MSG_ID: { 8574 Rect r = (Rect)msg.obj; 8575 if (r == null) { 8576 invalidate(); 8577 } else { 8578 // we need to scale r from content into view coords, 8579 // which viewInvalidate() does for us 8580 viewInvalidate(r.left, r.top, r.right, r.bottom); 8581 } 8582 break; 8583 } 8584 case REQUEST_FORM_DATA: 8585 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8586 if (mWebTextView.isSameTextField(msg.arg1)) { 8587 mWebTextView.setAdapterCustom(adapter); 8588 } 8589 break; 8590 8591 case LONG_PRESS_CENTER: 8592 // as this is shared by keydown and trackballdown, reset all 8593 // the states 8594 mGotCenterDown = false; 8595 mTrackballDown = false; 8596 performLongClick(); 8597 break; 8598 8599 case WEBCORE_NEED_TOUCH_EVENTS: 8600 mForwardTouchEvents = (msg.arg1 != 0); 8601 break; 8602 8603 case PREVENT_TOUCH_ID: 8604 if (inFullScreenMode()) { 8605 break; 8606 } 8607 TouchEventData ted = (TouchEventData) msg.obj; 8608 8609 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8610 // WebCore is responding to us; remove pending timeout. 8611 // It will be re-posted when needed. 8612 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8613 } 8614 break; 8615 8616 case REQUEST_KEYBOARD: 8617 if (msg.arg1 == 0) { 8618 hideSoftKeyboard(); 8619 } else { 8620 displaySoftKeyboard(false); 8621 } 8622 break; 8623 8624 case FIND_AGAIN: 8625 // Ignore if find has been dismissed. 8626 if (mFindIsUp && mFindCallback != null) { 8627 mFindCallback.findAll(); 8628 } 8629 break; 8630 8631 case DRAG_HELD_MOTIONLESS: 8632 mHeldMotionless = MOTIONLESS_TRUE; 8633 invalidate(); 8634 // fall through to keep scrollbars awake 8635 8636 case AWAKEN_SCROLL_BARS: 8637 if (mTouchMode == TOUCH_DRAG_MODE 8638 && mHeldMotionless == MOTIONLESS_TRUE) { 8639 awakenScrollBars(ViewConfiguration 8640 .getScrollDefaultDelay(), false); 8641 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8642 .obtainMessage(AWAKEN_SCROLL_BARS), 8643 ViewConfiguration.getScrollDefaultDelay()); 8644 } 8645 break; 8646 8647 case DO_MOTION_UP: 8648 doMotionUp(msg.arg1, msg.arg2); 8649 break; 8650 8651 case SCREEN_ON: 8652 setKeepScreenOn(msg.arg1 == 1); 8653 break; 8654 8655 case ENTER_FULLSCREEN_VIDEO: 8656 int layerId = msg.arg1; 8657 8658 String url = (String) msg.obj; 8659 if (mHTML5VideoViewProxy != null) { 8660 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8661 } 8662 break; 8663 8664 case SHOW_FULLSCREEN: { 8665 View view = (View) msg.obj; 8666 int orientation = msg.arg1; 8667 int npp = msg.arg2; 8668 8669 if (inFullScreenMode()) { 8670 Log.w(LOGTAG, "Should not have another full screen."); 8671 dismissFullScreenMode(); 8672 } 8673 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8674 mFullScreenHolder.setContentView(view); 8675 mFullScreenHolder.show(); 8676 invalidate(); 8677 8678 break; 8679 } 8680 case HIDE_FULLSCREEN: 8681 dismissFullScreenMode(); 8682 break; 8683 8684 case DOM_FOCUS_CHANGED: 8685 if (inEditingMode()) { 8686 nativeClearCursor(); 8687 rebuildWebTextView(); 8688 } 8689 break; 8690 8691 case SHOW_RECT_MSG_ID: { 8692 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8693 int x = mScrollX; 8694 int left = contentToViewX(data.mLeft); 8695 int width = contentToViewDimension(data.mWidth); 8696 int maxWidth = contentToViewDimension(data.mContentWidth); 8697 int viewWidth = getViewWidth(); 8698 if (width < viewWidth) { 8699 // center align 8700 x += left + width / 2 - mScrollX - viewWidth / 2; 8701 } else { 8702 x += (int) (left + data.mXPercentInDoc * width 8703 - mScrollX - data.mXPercentInView * viewWidth); 8704 } 8705 if (DebugFlags.WEB_VIEW) { 8706 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8707 width + ",maxWidth=" + maxWidth + 8708 ",viewWidth=" + viewWidth + ",x=" 8709 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8710 ",xPercentInView=" + data.mXPercentInView+ ")"); 8711 } 8712 // use the passing content width to cap x as the current 8713 // mContentWidth may not be updated yet 8714 x = Math.max(0, 8715 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8716 int top = contentToViewY(data.mTop); 8717 int height = contentToViewDimension(data.mHeight); 8718 int maxHeight = contentToViewDimension(data.mContentHeight); 8719 int viewHeight = getViewHeight(); 8720 int y = (int) (top + data.mYPercentInDoc * height - 8721 data.mYPercentInView * viewHeight); 8722 if (DebugFlags.WEB_VIEW) { 8723 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8724 height + ",maxHeight=" + maxHeight + 8725 ",viewHeight=" + viewHeight + ",y=" 8726 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8727 ",yPercentInView=" + data.mYPercentInView+ ")"); 8728 } 8729 // use the passing content height to cap y as the current 8730 // mContentHeight may not be updated yet 8731 y = Math.max(0, 8732 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8733 // We need to take into account the visible title height 8734 // when scrolling since y is an absolute view position. 8735 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8736 scrollTo(x, y); 8737 } 8738 break; 8739 8740 case CENTER_FIT_RECT: 8741 centerFitRect((Rect)msg.obj); 8742 break; 8743 8744 case SET_SCROLLBAR_MODES: 8745 mHorizontalScrollBarMode = msg.arg1; 8746 mVerticalScrollBarMode = msg.arg2; 8747 break; 8748 8749 case SELECTION_STRING_CHANGED: 8750 if (mAccessibilityInjector != null) { 8751 String selectionString = (String) msg.obj; 8752 mAccessibilityInjector.onSelectionStringChange(selectionString); 8753 } 8754 break; 8755 8756 case SET_TOUCH_HIGHLIGHT_RECTS: 8757 @SuppressWarnings("unchecked") 8758 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8759 setTouchHighlightRects(rects); 8760 break; 8761 8762 case SAVE_WEBARCHIVE_FINISHED: 8763 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8764 if (saveMessage.mCallback != null) { 8765 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8766 } 8767 break; 8768 8769 case SET_AUTOFILLABLE: 8770 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8771 if (mWebTextView != null) { 8772 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8773 rebuildWebTextView(); 8774 } 8775 break; 8776 8777 case AUTOFILL_COMPLETE: 8778 if (mWebTextView != null) { 8779 // Clear the WebTextView adapter when AutoFill finishes 8780 // so that the drop down gets cleared. 8781 mWebTextView.setAdapterCustom(null); 8782 } 8783 break; 8784 8785 case SELECT_AT: 8786 nativeSelectAt(msg.arg1, msg.arg2); 8787 break; 8788 8789 default: 8790 super.handleMessage(msg); 8791 break; 8792 } 8793 } 8794 } 8795 8796 private void setTouchHighlightRects(ArrayList<Rect> rects) { 8797 invalidate(mTouchHighlightRegion.getBounds()); 8798 mTouchHighlightRegion.setEmpty(); 8799 if (rects != null) { 8800 for (Rect rect : rects) { 8801 Rect viewRect = contentToViewRect(rect); 8802 // some sites, like stories in nytimes.com, set 8803 // mouse event handler in the top div. It is not 8804 // user friendly to highlight the div if it covers 8805 // more than half of the screen. 8806 if (viewRect.width() < getWidth() >> 1 8807 || viewRect.height() < getHeight() >> 1) { 8808 mTouchHighlightRegion.union(viewRect); 8809 } else { 8810 Log.w(LOGTAG, "Skip the huge selection rect:" 8811 + viewRect); 8812 } 8813 } 8814 invalidate(mTouchHighlightRegion.getBounds()); 8815 } 8816 } 8817 8818 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8819 * acceleration) */ 8820 protected void pageSwapCallback(boolean notifyAnimationStarted) { 8821 if (inEditingMode()) { 8822 didUpdateWebTextViewDimensions(ANYWHERE); 8823 } 8824 if (notifyAnimationStarted) { 8825 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 8826 } 8827 } 8828 8829 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8830 if (mNativeClass == 0) { 8831 if (mDelaySetPicture != null) { 8832 throw new IllegalStateException("Tried to setNewPicture with" 8833 + " a delay picture already set! (memory leak)"); 8834 } 8835 // Not initialized yet, delay set 8836 mDelaySetPicture = draw; 8837 return; 8838 } 8839 WebViewCore.ViewState viewState = draw.mViewState; 8840 boolean isPictureAfterFirstLayout = viewState != null; 8841 8842 if (updateBaseLayer) { 8843 // Request a callback on pageSwap (to reposition the webtextview) 8844 boolean registerPageSwapCallback = 8845 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8846 8847 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8848 getSettings().getShowVisualIndicator(), 8849 isPictureAfterFirstLayout, registerPageSwapCallback); 8850 } 8851 final Point viewSize = draw.mViewSize; 8852 // We update the layout (i.e. request a layout from the 8853 // view system) if the last view size that we sent to 8854 // WebCore matches the view size of the picture we just 8855 // received in the fixed dimension. 8856 final boolean updateLayout = viewSize.x == mLastWidthSent 8857 && viewSize.y == mLastHeightSent; 8858 // Don't send scroll event for picture coming from webkit, 8859 // since the new picture may cause a scroll event to override 8860 // the saved history scroll position. 8861 mSendScrollEvent = false; 8862 recordNewContentSize(draw.mContentSize.x, 8863 draw.mContentSize.y, updateLayout); 8864 if (isPictureAfterFirstLayout) { 8865 // Reset the last sent data here since dealing with new page. 8866 mLastWidthSent = 0; 8867 mZoomManager.onFirstLayout(draw); 8868 int scrollX = viewState.mShouldStartScrolledRight 8869 ? getContentWidth() : viewState.mScrollX; 8870 int scrollY = viewState.mScrollY; 8871 setContentScrollTo(scrollX, scrollY); 8872 if (!mDrawHistory) { 8873 // As we are on a new page, remove the WebTextView. This 8874 // is necessary for page loads driven by webkit, and in 8875 // particular when the user was on a password field, so 8876 // the WebTextView was visible. 8877 clearTextEntry(); 8878 } 8879 } 8880 mSendScrollEvent = true; 8881 8882 if (DebugFlags.WEB_VIEW) { 8883 Rect b = draw.mInvalRegion.getBounds(); 8884 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8885 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8886 } 8887 invalidateContentRect(draw.mInvalRegion.getBounds()); 8888 8889 if (mPictureListener != null) { 8890 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8891 } 8892 8893 // update the zoom information based on the new picture 8894 mZoomManager.onNewPicture(draw); 8895 8896 if (draw.mFocusSizeChanged && inEditingMode()) { 8897 mFocusSizeChanged = true; 8898 } 8899 if (isPictureAfterFirstLayout) { 8900 mViewManager.postReadyToDrawAll(); 8901 } 8902 } 8903 8904 /** 8905 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8906 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8907 */ 8908 private void updateTextSelectionFromMessage(int nodePointer, 8909 int textGeneration, WebViewCore.TextSelectionData data) { 8910 if (inEditingMode() 8911 && mWebTextView.isSameTextField(nodePointer) 8912 && textGeneration == mTextGeneration) { 8913 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8914 } 8915 } 8916 8917 // Class used to use a dropdown for a <select> element 8918 private class InvokeListBox implements Runnable { 8919 // Whether the listbox allows multiple selection. 8920 private boolean mMultiple; 8921 // Passed in to a list with multiple selection to tell 8922 // which items are selected. 8923 private int[] mSelectedArray; 8924 // Passed in to a list with single selection to tell 8925 // where the initial selection is. 8926 private int mSelection; 8927 8928 private Container[] mContainers; 8929 8930 // Need these to provide stable ids to my ArrayAdapter, 8931 // which normally does not have stable ids. (Bug 1250098) 8932 private class Container extends Object { 8933 /** 8934 * Possible values for mEnabled. Keep in sync with OptionStatus in 8935 * WebViewCore.cpp 8936 */ 8937 final static int OPTGROUP = -1; 8938 final static int OPTION_DISABLED = 0; 8939 final static int OPTION_ENABLED = 1; 8940 8941 String mString; 8942 int mEnabled; 8943 int mId; 8944 8945 @Override 8946 public String toString() { 8947 return mString; 8948 } 8949 } 8950 8951 /** 8952 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8953 * and allow filtering. 8954 */ 8955 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8956 public MyArrayListAdapter() { 8957 super(mContext, 8958 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8959 com.android.internal.R.layout.webview_select_singlechoice, 8960 mContainers); 8961 } 8962 8963 @Override 8964 public View getView(int position, View convertView, 8965 ViewGroup parent) { 8966 // Always pass in null so that we will get a new CheckedTextView 8967 // Otherwise, an item which was previously used as an <optgroup> 8968 // element (i.e. has no check), could get used as an <option> 8969 // element, which needs a checkbox/radio, but it would not have 8970 // one. 8971 convertView = super.getView(position, null, parent); 8972 Container c = item(position); 8973 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8974 // ListView does not draw dividers between disabled and 8975 // enabled elements. Use a LinearLayout to provide dividers 8976 LinearLayout layout = new LinearLayout(mContext); 8977 layout.setOrientation(LinearLayout.VERTICAL); 8978 if (position > 0) { 8979 View dividerTop = new View(mContext); 8980 dividerTop.setBackgroundResource( 8981 android.R.drawable.divider_horizontal_bright); 8982 layout.addView(dividerTop); 8983 } 8984 8985 if (Container.OPTGROUP == c.mEnabled) { 8986 // Currently select_dialog_multichoice uses CheckedTextViews. 8987 // If that changes, the class cast will no longer be valid. 8988 if (mMultiple) { 8989 Assert.assertTrue(convertView instanceof CheckedTextView); 8990 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8991 } 8992 } else { 8993 // c.mEnabled == Container.OPTION_DISABLED 8994 // Draw the disabled element in a disabled state. 8995 convertView.setEnabled(false); 8996 } 8997 8998 layout.addView(convertView); 8999 if (position < getCount() - 1) { 9000 View dividerBottom = new View(mContext); 9001 dividerBottom.setBackgroundResource( 9002 android.R.drawable.divider_horizontal_bright); 9003 layout.addView(dividerBottom); 9004 } 9005 return layout; 9006 } 9007 return convertView; 9008 } 9009 9010 @Override 9011 public boolean hasStableIds() { 9012 // AdapterView's onChanged method uses this to determine whether 9013 // to restore the old state. Return false so that the old (out 9014 // of date) state does not replace the new, valid state. 9015 return false; 9016 } 9017 9018 private Container item(int position) { 9019 if (position < 0 || position >= getCount()) { 9020 return null; 9021 } 9022 return (Container) getItem(position); 9023 } 9024 9025 @Override 9026 public long getItemId(int position) { 9027 Container item = item(position); 9028 if (item == null) { 9029 return -1; 9030 } 9031 return item.mId; 9032 } 9033 9034 @Override 9035 public boolean areAllItemsEnabled() { 9036 return false; 9037 } 9038 9039 @Override 9040 public boolean isEnabled(int position) { 9041 Container item = item(position); 9042 if (item == null) { 9043 return false; 9044 } 9045 return Container.OPTION_ENABLED == item.mEnabled; 9046 } 9047 } 9048 9049 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 9050 mMultiple = true; 9051 mSelectedArray = selected; 9052 9053 int length = array.length; 9054 mContainers = new Container[length]; 9055 for (int i = 0; i < length; i++) { 9056 mContainers[i] = new Container(); 9057 mContainers[i].mString = array[i]; 9058 mContainers[i].mEnabled = enabled[i]; 9059 mContainers[i].mId = i; 9060 } 9061 } 9062 9063 private InvokeListBox(String[] array, int[] enabled, int selection) { 9064 mSelection = selection; 9065 mMultiple = false; 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 /* 9078 * Whenever the data set changes due to filtering, this class ensures 9079 * that the checked item remains checked. 9080 */ 9081 private class SingleDataSetObserver extends DataSetObserver { 9082 private long mCheckedId; 9083 private ListView mListView; 9084 private Adapter mAdapter; 9085 9086 /* 9087 * Create a new observer. 9088 * @param id The ID of the item to keep checked. 9089 * @param l ListView for getting and clearing the checked states 9090 * @param a Adapter for getting the IDs 9091 */ 9092 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9093 mCheckedId = id; 9094 mListView = l; 9095 mAdapter = a; 9096 } 9097 9098 @Override 9099 public void onChanged() { 9100 // The filter may have changed which item is checked. Find the 9101 // item that the ListView thinks is checked. 9102 int position = mListView.getCheckedItemPosition(); 9103 long id = mAdapter.getItemId(position); 9104 if (mCheckedId != id) { 9105 // Clear the ListView's idea of the checked item, since 9106 // it is incorrect 9107 mListView.clearChoices(); 9108 // Search for mCheckedId. If it is in the filtered list, 9109 // mark it as checked 9110 int count = mAdapter.getCount(); 9111 for (int i = 0; i < count; i++) { 9112 if (mAdapter.getItemId(i) == mCheckedId) { 9113 mListView.setItemChecked(i, true); 9114 break; 9115 } 9116 } 9117 } 9118 } 9119 } 9120 9121 public void run() { 9122 final ListView listView = (ListView) LayoutInflater.from(mContext) 9123 .inflate(com.android.internal.R.layout.select_dialog, null); 9124 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9125 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9126 .setView(listView).setCancelable(true) 9127 .setInverseBackgroundForced(true); 9128 9129 if (mMultiple) { 9130 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9131 public void onClick(DialogInterface dialog, int which) { 9132 mWebViewCore.sendMessage( 9133 EventHub.LISTBOX_CHOICES, 9134 adapter.getCount(), 0, 9135 listView.getCheckedItemPositions()); 9136 }}); 9137 b.setNegativeButton(android.R.string.cancel, 9138 new DialogInterface.OnClickListener() { 9139 public void onClick(DialogInterface dialog, int which) { 9140 mWebViewCore.sendMessage( 9141 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9142 }}); 9143 } 9144 mListBoxDialog = b.create(); 9145 listView.setAdapter(adapter); 9146 listView.setFocusableInTouchMode(true); 9147 // There is a bug (1250103) where the checks in a ListView with 9148 // multiple items selected are associated with the positions, not 9149 // the ids, so the items do not properly retain their checks when 9150 // filtered. Do not allow filtering on multiple lists until 9151 // that bug is fixed. 9152 9153 listView.setTextFilterEnabled(!mMultiple); 9154 if (mMultiple) { 9155 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9156 int length = mSelectedArray.length; 9157 for (int i = 0; i < length; i++) { 9158 listView.setItemChecked(mSelectedArray[i], true); 9159 } 9160 } else { 9161 listView.setOnItemClickListener(new OnItemClickListener() { 9162 public void onItemClick(AdapterView<?> parent, View v, 9163 int position, long id) { 9164 // Rather than sending the message right away, send it 9165 // after the page regains focus. 9166 mListBoxMessage = Message.obtain(null, 9167 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9168 mListBoxDialog.dismiss(); 9169 mListBoxDialog = null; 9170 } 9171 }); 9172 if (mSelection != -1) { 9173 listView.setSelection(mSelection); 9174 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9175 listView.setItemChecked(mSelection, true); 9176 DataSetObserver observer = new SingleDataSetObserver( 9177 adapter.getItemId(mSelection), listView, adapter); 9178 adapter.registerDataSetObserver(observer); 9179 } 9180 } 9181 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9182 public void onCancel(DialogInterface dialog) { 9183 mWebViewCore.sendMessage( 9184 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9185 mListBoxDialog = null; 9186 } 9187 }); 9188 mListBoxDialog.show(); 9189 } 9190 } 9191 9192 private Message mListBoxMessage; 9193 9194 /* 9195 * Request a dropdown menu for a listbox with multiple selection. 9196 * 9197 * @param array Labels for the listbox. 9198 * @param enabledArray State for each element in the list. See static 9199 * integers in Container class. 9200 * @param selectedArray Which positions are initally selected. 9201 */ 9202 void requestListBox(String[] array, int[] enabledArray, int[] 9203 selectedArray) { 9204 mPrivateHandler.post( 9205 new InvokeListBox(array, enabledArray, selectedArray)); 9206 } 9207 9208 /* 9209 * Request a dropdown menu for a listbox with single selection or a single 9210 * <select> element. 9211 * 9212 * @param array Labels for the listbox. 9213 * @param enabledArray State for each element in the list. See static 9214 * integers in Container class. 9215 * @param selection Which position is initally selected. 9216 */ 9217 void requestListBox(String[] array, int[] enabledArray, int selection) { 9218 mPrivateHandler.post( 9219 new InvokeListBox(array, enabledArray, selection)); 9220 } 9221 9222 // called by JNI 9223 private void sendMoveFocus(int frame, int node) { 9224 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9225 new WebViewCore.CursorData(frame, node, 0, 0)); 9226 } 9227 9228 // called by JNI 9229 private void sendMoveMouse(int frame, int node, int x, int y) { 9230 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9231 new WebViewCore.CursorData(frame, node, x, y)); 9232 } 9233 9234 /* 9235 * Send a mouse move event to the webcore thread. 9236 * 9237 * @param removeFocus Pass true to remove the WebTextView, if present. 9238 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9239 * called by JNI 9240 */ 9241 @SuppressWarnings("unused") 9242 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9243 if (removeFocus) { 9244 clearTextEntry(); 9245 } 9246 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9247 stopPaintingCaret ? 1 : 0, 0, 9248 cursorData()); 9249 } 9250 9251 /** 9252 * Called by JNI to send a message to the webcore thread that the user 9253 * touched the webpage. 9254 * @param touchGeneration Generation number of the touch, to ignore touches 9255 * after a new one has been generated. 9256 * @param frame Pointer to the frame holding the node that was touched. 9257 * @param node Pointer to the node touched. 9258 * @param x x-position of the touch. 9259 * @param y y-position of the touch. 9260 */ 9261 private void sendMotionUp(int touchGeneration, 9262 int frame, int node, int x, int y) { 9263 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9264 touchUpData.mMoveGeneration = touchGeneration; 9265 touchUpData.mFrame = frame; 9266 touchUpData.mNode = node; 9267 touchUpData.mX = x; 9268 touchUpData.mY = y; 9269 touchUpData.mNativeLayer = nativeScrollableLayer( 9270 x, y, touchUpData.mNativeLayerRect, null); 9271 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9272 } 9273 9274 9275 private int getScaledMaxXScroll() { 9276 int width; 9277 if (mHeightCanMeasure == false) { 9278 width = getViewWidth() / 4; 9279 } else { 9280 Rect visRect = new Rect(); 9281 calcOurVisibleRect(visRect); 9282 width = visRect.width() / 2; 9283 } 9284 // FIXME the divisor should be retrieved from somewhere 9285 return viewToContentX(width); 9286 } 9287 9288 private int getScaledMaxYScroll() { 9289 int height; 9290 if (mHeightCanMeasure == false) { 9291 height = getViewHeight() / 4; 9292 } else { 9293 Rect visRect = new Rect(); 9294 calcOurVisibleRect(visRect); 9295 height = visRect.height() / 2; 9296 } 9297 // FIXME the divisor should be retrieved from somewhere 9298 // the closest thing today is hard-coded into ScrollView.java 9299 // (from ScrollView.java, line 363) int maxJump = height/2; 9300 return Math.round(height * mZoomManager.getInvScale()); 9301 } 9302 9303 /** 9304 * Called by JNI to invalidate view 9305 */ 9306 private void viewInvalidate() { 9307 invalidate(); 9308 } 9309 9310 /** 9311 * Pass the key directly to the page. This assumes that 9312 * nativePageShouldHandleShiftAndArrows() returned true. 9313 */ 9314 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9315 int keyEventAction; 9316 int eventHubAction; 9317 if (down) { 9318 keyEventAction = KeyEvent.ACTION_DOWN; 9319 eventHubAction = EventHub.KEY_DOWN; 9320 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9321 } else { 9322 keyEventAction = KeyEvent.ACTION_UP; 9323 eventHubAction = EventHub.KEY_UP; 9324 } 9325 9326 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9327 1, (metaState & KeyEvent.META_SHIFT_ON) 9328 | (metaState & KeyEvent.META_ALT_ON) 9329 | (metaState & KeyEvent.META_SYM_ON) 9330 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9331 mWebViewCore.sendMessage(eventHubAction, event); 9332 } 9333 9334 // return true if the key was handled 9335 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9336 long time) { 9337 if (mNativeClass == 0) { 9338 return false; 9339 } 9340 mInitialHitTestResult = null; 9341 mLastCursorTime = time; 9342 mLastCursorBounds = nativeGetCursorRingBounds(); 9343 boolean keyHandled 9344 = nativeMoveCursor(keyCode, count, noScroll) == false; 9345 if (DebugFlags.WEB_VIEW) { 9346 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9347 + " mLastCursorTime=" + mLastCursorTime 9348 + " handled=" + keyHandled); 9349 } 9350 if (keyHandled == false) { 9351 return keyHandled; 9352 } 9353 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9354 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9355 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9356 // set last touch so that context menu related functions will work 9357 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9358 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9359 if (mHeightCanMeasure == false) { 9360 return keyHandled; 9361 } 9362 Rect visRect = new Rect(); 9363 calcOurVisibleRect(visRect); 9364 Rect outset = new Rect(visRect); 9365 int maxXScroll = visRect.width() / 2; 9366 int maxYScroll = visRect.height() / 2; 9367 outset.inset(-maxXScroll, -maxYScroll); 9368 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9369 return keyHandled; 9370 } 9371 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9372 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9373 maxXScroll); 9374 if (maxH > 0) { 9375 pinScrollBy(maxH, 0, true, 0); 9376 } else { 9377 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9378 -maxXScroll); 9379 if (maxH < 0) { 9380 pinScrollBy(maxH, 0, true, 0); 9381 } 9382 } 9383 if (mLastCursorBounds.isEmpty()) return keyHandled; 9384 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9385 return keyHandled; 9386 } 9387 if (DebugFlags.WEB_VIEW) { 9388 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9389 + contentCursorRingBounds); 9390 } 9391 requestRectangleOnScreen(viewCursorRingBounds); 9392 return keyHandled; 9393 } 9394 9395 /** 9396 * @return Whether accessibility script has been injected. 9397 */ 9398 private boolean accessibilityScriptInjected() { 9399 // TODO: Maybe the injected script should announce its presence in 9400 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9401 // will check that as one of the conditions it looks for 9402 return mAccessibilityScriptInjected; 9403 } 9404 9405 /** 9406 * Set the background color. It's white by default. Pass 9407 * zero to make the view transparent. 9408 * @param color the ARGB color described by Color.java 9409 */ 9410 @Override 9411 public void setBackgroundColor(int color) { 9412 mBackgroundColor = color; 9413 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9414 } 9415 9416 /** 9417 * @deprecated This method is now obsolete. 9418 */ 9419 @Deprecated 9420 public void debugDump() { 9421 checkThread(); 9422 nativeDebugDump(); 9423 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9424 } 9425 9426 /** 9427 * Draw the HTML page into the specified canvas. This call ignores any 9428 * view-specific zoom, scroll offset, or other changes. It does not draw 9429 * any view-specific chrome, such as progress or URL bars. 9430 * 9431 * @hide only needs to be accessible to Browser and testing 9432 */ 9433 public void drawPage(Canvas canvas) { 9434 calcOurContentVisibleRectF(mVisibleContentRect); 9435 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9436 } 9437 9438 /** 9439 * Enable the communication b/t the webView and VideoViewProxy 9440 * 9441 * @hide only used by the Browser 9442 */ 9443 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9444 mHTML5VideoViewProxy = proxy; 9445 } 9446 9447 /** 9448 * Set the time to wait between passing touches to WebCore. See also the 9449 * TOUCH_SENT_INTERVAL member for further discussion. 9450 * 9451 * @hide This is only used by the DRT test application. 9452 */ 9453 public void setTouchInterval(int interval) { 9454 mCurrentTouchInterval = interval; 9455 } 9456 9457 /** 9458 * Update our cache with updatedText. 9459 * @param updatedText The new text to put in our cache. 9460 * @hide 9461 */ 9462 protected void updateCachedTextfield(String updatedText) { 9463 // Also place our generation number so that when we look at the cache 9464 // we recognize that it is up to date. 9465 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9466 } 9467 9468 /*package*/ void autoFillForm(int autoFillQueryId) { 9469 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9470 } 9471 9472 /* package */ ViewManager getViewManager() { 9473 return mViewManager; 9474 } 9475 9476 private static void checkThread() { 9477 if (Looper.myLooper() != Looper.getMainLooper()) { 9478 Throwable throwable = new Throwable( 9479 "Warning: A WebView method was called on thread '" + 9480 Thread.currentThread().getName() + "'. " + 9481 "All WebView methods must be called on the UI thread. " + 9482 "Future versions of WebView may not support use on other threads."); 9483 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9484 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9485 } 9486 } 9487 9488 /** @hide send content invalidate */ 9489 protected void contentInvalidateAll() { 9490 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9491 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9492 } 9493 } 9494 9495 /** @hide call pageSwapCallback upon next page swap */ 9496 protected void registerPageSwapCallback() { 9497 nativeRegisterPageSwapCallback(mNativeClass); 9498 } 9499 9500 /** @hide discard all textures from tiles */ 9501 protected void discardAllTextures() { 9502 nativeDiscardAllTextures(); 9503 } 9504 9505 /** 9506 * Begin collecting per-tile profiling data 9507 * 9508 * @hide only used by profiling tests 9509 */ 9510 public void tileProfilingStart() { 9511 nativeTileProfilingStart(); 9512 } 9513 /** 9514 * Return per-tile profiling data 9515 * 9516 * @hide only used by profiling tests 9517 */ 9518 public float tileProfilingStop() { 9519 return nativeTileProfilingStop(); 9520 } 9521 9522 /** @hide only used by profiling tests */ 9523 public void tileProfilingClear() { 9524 nativeTileProfilingClear(); 9525 } 9526 /** @hide only used by profiling tests */ 9527 public int tileProfilingNumFrames() { 9528 return nativeTileProfilingNumFrames(); 9529 } 9530 /** @hide only used by profiling tests */ 9531 public int tileProfilingNumTilesInFrame(int frame) { 9532 return nativeTileProfilingNumTilesInFrame(frame); 9533 } 9534 /** @hide only used by profiling tests */ 9535 public int tileProfilingGetInt(int frame, int tile, String key) { 9536 return nativeTileProfilingGetInt(frame, tile, key); 9537 } 9538 /** @hide only used by profiling tests */ 9539 public float tileProfilingGetFloat(int frame, int tile, String key) { 9540 return nativeTileProfilingGetFloat(frame, tile, key); 9541 } 9542 9543 private native int nativeCacheHitFramePointer(); 9544 private native boolean nativeCacheHitIsPlugin(); 9545 private native Rect nativeCacheHitNodeBounds(); 9546 private native int nativeCacheHitNodePointer(); 9547 /* package */ native void nativeClearCursor(); 9548 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 9549 private native int nativeCursorFramePointer(); 9550 private native Rect nativeCursorNodeBounds(); 9551 private native int nativeCursorNodePointer(); 9552 private native boolean nativeCursorIntersects(Rect visibleRect); 9553 private native boolean nativeCursorIsAnchor(); 9554 private native boolean nativeCursorIsTextInput(); 9555 private native Point nativeCursorPosition(); 9556 private native String nativeCursorText(); 9557 /** 9558 * Returns true if the native cursor node says it wants to handle key events 9559 * (ala plugins). This can only be called if mNativeClass is non-zero! 9560 */ 9561 private native boolean nativeCursorWantsKeyEvents(); 9562 private native void nativeDebugDump(); 9563 private native void nativeDestroy(); 9564 9565 /** 9566 * Draw the picture set with a background color and extra. If 9567 * "splitIfNeeded" is true and the return value is not 0, the return value 9568 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9569 * native allocation can be freed. 9570 */ 9571 private native int nativeDraw(Canvas canvas, RectF visibleRect, 9572 int color, int extra, boolean splitIfNeeded); 9573 private native void nativeDumpDisplayTree(String urlOrNull); 9574 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9575 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9576 Rect viewRect, RectF visibleRect, float scale, int extras); 9577 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 9578 RectF visibleRect); 9579 private native void nativeExtendSelection(int x, int y); 9580 private native int nativeFindAll(String findLower, String findUpper, 9581 boolean sameAsLastSearch); 9582 private native void nativeFindNext(boolean forward); 9583 /* package */ native int nativeFocusCandidateFramePointer(); 9584 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9585 /* package */ native boolean nativeFocusCandidateIsPassword(); 9586 private native boolean nativeFocusCandidateIsRtlText(); 9587 private native boolean nativeFocusCandidateIsTextInput(); 9588 /* package */ native int nativeFocusCandidateMaxLength(); 9589 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9590 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 9591 /* package */ native String nativeFocusCandidateName(); 9592 private native Rect nativeFocusCandidateNodeBounds(); 9593 /** 9594 * @return A Rect with left, top, right, bottom set to the corresponding 9595 * padding values in the focus candidate, if it is a textfield/textarea with 9596 * a style. Otherwise return null. This is not actually a rectangle; Rect 9597 * is being used to pass four integers. 9598 */ 9599 private native Rect nativeFocusCandidatePaddingRect(); 9600 /* package */ native int nativeFocusCandidatePointer(); 9601 private native String nativeFocusCandidateText(); 9602 /* package */ native float nativeFocusCandidateTextSize(); 9603 /* package */ native int nativeFocusCandidateLineHeight(); 9604 /** 9605 * Returns an integer corresponding to WebView.cpp::type. 9606 * See WebTextView.setType() 9607 */ 9608 private native int nativeFocusCandidateType(); 9609 private native int nativeFocusCandidateLayerId(); 9610 private native boolean nativeFocusIsPlugin(); 9611 private native Rect nativeFocusNodeBounds(); 9612 /* package */ native int nativeFocusNodePointer(); 9613 private native Rect nativeGetCursorRingBounds(); 9614 private native String nativeGetSelection(); 9615 private native boolean nativeHasCursorNode(); 9616 private native boolean nativeHasFocusNode(); 9617 private native void nativeHideCursor(); 9618 private native boolean nativeHitSelection(int x, int y); 9619 private native String nativeImageURI(int x, int y); 9620 private native Rect nativeLayerBounds(int layer); 9621 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9622 // return true if the page has been scrolled 9623 private native boolean nativeMotionUp(int x, int y, int slop); 9624 // returns false if it handled the key 9625 private native boolean nativeMoveCursor(int keyCode, int count, 9626 boolean noScroll); 9627 private native int nativeMoveGeneration(); 9628 private native void nativeMoveSelection(int x, int y); 9629 /** 9630 * @return true if the page should get the shift and arrow keys, rather 9631 * than select text/navigation. 9632 * 9633 * If the focus is a plugin, or if the focus and cursor match and are 9634 * a contentEditable element, then the page should handle these keys. 9635 */ 9636 private native boolean nativePageShouldHandleShiftAndArrows(); 9637 private native boolean nativePointInNavCache(int x, int y, int slop); 9638 // Like many other of our native methods, you must make sure that 9639 // mNativeClass is not null before calling this method. 9640 private native void nativeResetSelection(); 9641 private native Point nativeSelectableText(); 9642 private native void nativeSelectAll(); 9643 private native void nativeSelectBestAt(Rect rect); 9644 private native void nativeSelectAt(int x, int y); 9645 private native int nativeSelectionX(); 9646 private native int nativeSelectionY(); 9647 private native int nativeFindIndex(); 9648 private native void nativeSetExtendSelection(); 9649 private native void nativeSetFindIsEmpty(); 9650 private native void nativeSetFindIsUp(boolean isUp); 9651 private native void nativeSetHeightCanMeasure(boolean measure); 9652 private native void nativeSetBaseLayer(int nativeInstance, 9653 int layer, Region invalRegion, 9654 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9655 boolean registerPageSwapCallback); 9656 private native int nativeGetBaseLayer(); 9657 private native void nativeShowCursorTimed(); 9658 private native void nativeReplaceBaseContent(int content); 9659 private native void nativeCopyBaseContentToPicture(Picture pict); 9660 private native boolean nativeHasContent(); 9661 private native void nativeSetSelectionPointer(int nativeInstance, 9662 boolean set, float scale, int x, int y); 9663 private native boolean nativeStartSelection(int x, int y); 9664 private native void nativeStopGL(); 9665 private native Rect nativeSubtractLayers(Rect content); 9666 private native int nativeTextGeneration(); 9667 private native void nativeRegisterPageSwapCallback(int nativeInstance); 9668 private native void nativeDiscardAllTextures(); 9669 private native void nativeTileProfilingStart(); 9670 private native float nativeTileProfilingStop(); 9671 private native void nativeTileProfilingClear(); 9672 private native int nativeTileProfilingNumFrames(); 9673 private native int nativeTileProfilingNumTilesInFrame(int frame); 9674 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9675 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9676 // Never call this version except by updateCachedTextfield(String) - 9677 // we always want to pass in our generation number. 9678 private native void nativeUpdateCachedTextfield(String updatedText, 9679 int generation); 9680 private native boolean nativeWordSelection(int x, int y); 9681 // return NO_LEFTEDGE means failure. 9682 static final int NO_LEFTEDGE = -1; 9683 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9684 9685 private native void nativeUseHardwareAccelSkia(boolean enabled); 9686 9687 // Returns a pointer to the scrollable LayerAndroid at the given point. 9688 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9689 Rect scrollBounds); 9690 /** 9691 * Scroll the specified layer. 9692 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9693 * @param newX Destination x position to which to scroll. 9694 * @param newY Destination y position to which to scroll. 9695 * @return True if the layer is successfully scrolled. 9696 */ 9697 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9698 private native void nativeSetIsScrolling(boolean isScrolling); 9699 private native int nativeGetBackgroundColor(); 9700 native boolean nativeSetProperty(String key, String value); 9701 native String nativeGetProperty(String key); 9702 private native void nativeGetTextSelectionRegion(int instance, Region region); 9703 private native void nativeGetSelectionHandles(int instance, int[] handles); 9704 /** 9705 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9706 */ 9707 private static native void nativeOnTrimMemory(int level); 9708 private static native void nativeSetPauseDrawing(int instance, boolean pause); 9709} 9710