WebView.java revision bdfb3c5a69af0ae8ee725efff405ac13a66070bf
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.ComponentCallbacks2; 24import android.content.Context; 25import android.content.DialogInterface; 26import android.content.DialogInterface.OnCancelListener; 27import android.content.Intent; 28import android.content.IntentFilter; 29import android.content.pm.PackageInfo; 30import android.content.pm.PackageManager; 31import android.content.res.Configuration; 32import android.database.DataSetObserver; 33import android.graphics.Bitmap; 34import android.graphics.BitmapFactory; 35import android.graphics.BitmapShader; 36import android.graphics.Canvas; 37import android.graphics.Color; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.RegionIterator; 47import android.graphics.Shader; 48import android.graphics.drawable.Drawable; 49import android.net.Proxy; 50import android.net.ProxyProperties; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Looper; 57import android.os.Message; 58import android.os.StrictMode; 59import android.provider.Settings; 60import android.speech.tts.TextToSpeech; 61import android.util.AttributeSet; 62import android.util.EventLog; 63import android.util.Log; 64import android.view.Gravity; 65import android.view.HapticFeedbackConstants; 66import android.view.HardwareCanvas; 67import android.view.InputDevice; 68import android.view.KeyCharacterMap; 69import android.view.KeyEvent; 70import android.view.LayoutInflater; 71import android.view.MotionEvent; 72import android.view.ScaleGestureDetector; 73import android.view.SoundEffectConstants; 74import android.view.VelocityTracker; 75import android.view.View; 76import android.view.ViewConfiguration; 77import android.view.ViewGroup; 78import android.view.ViewParent; 79import android.view.ViewTreeObserver; 80import android.view.accessibility.AccessibilityManager; 81import android.view.inputmethod.EditorInfo; 82import android.view.inputmethod.InputConnection; 83import android.view.inputmethod.InputMethodManager; 84import android.webkit.WebTextView.AutoCompleteAdapter; 85import android.webkit.WebViewCore.DrawData; 86import android.webkit.WebViewCore.EventHub; 87import android.webkit.WebViewCore.TouchEventData; 88import android.webkit.WebViewCore.TouchHighlightData; 89import android.widget.AbsoluteLayout; 90import android.widget.Adapter; 91import android.widget.AdapterView; 92import android.widget.AdapterView.OnItemClickListener; 93import android.widget.ArrayAdapter; 94import android.widget.CheckedTextView; 95import android.widget.LinearLayout; 96import android.widget.ListView; 97import android.widget.OverScroller; 98import android.widget.Toast; 99 100import junit.framework.Assert; 101 102import java.io.File; 103import java.io.FileInputStream; 104import java.io.FileNotFoundException; 105import java.io.FileOutputStream; 106import java.io.IOException; 107import java.io.InputStream; 108import java.io.OutputStream; 109import java.net.URLDecoder; 110import java.util.ArrayList; 111import java.util.HashMap; 112import java.util.HashSet; 113import java.util.List; 114import java.util.Map; 115import java.util.Set; 116import java.util.Vector; 117import java.util.regex.Matcher; 118import java.util.regex.Pattern; 119 120/** 121 * <p>A View that displays web pages. This class is the basis upon which you 122 * can roll your own web browser or simply display some online content within your Activity. 123 * It uses the WebKit rendering engine to display 124 * web pages and includes methods to navigate forward and backward 125 * through a history, zoom in and out, perform text searches and more.</p> 126 * <p>To enable the built-in zoom, set 127 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 128 * (introduced in API version 3). 129 * <p>Note that, in order for your Activity to access the Internet and load web pages 130 * in a WebView, you must add the {@code INTERNET} permissions to your 131 * Android Manifest file:</p> 132 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 133 * 134 * <p>This must be a child of the <a 135 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 136 * element.</p> 137 * 138 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 139 * tutorial</a>.</p> 140 * 141 * <h3>Basic usage</h3> 142 * 143 * <p>By default, a WebView provides no browser-like widgets, does not 144 * enable JavaScript and web page errors are ignored. If your goal is only 145 * to display some HTML as a part of your UI, this is probably fine; 146 * the user won't need to interact with the web page beyond reading 147 * it, and the web page won't need to interact with the user. If you 148 * actually want a full-blown web browser, then you probably want to 149 * invoke the Browser application with a URL Intent rather than show it 150 * with a WebView. For example: 151 * <pre> 152 * Uri uri = Uri.parse("http://www.example.com"); 153 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 154 * startActivity(intent); 155 * </pre> 156 * <p>See {@link android.content.Intent} for more information.</p> 157 * 158 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 159 * or set the entire Activity window as a WebView during {@link 160 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 161 * <pre class="prettyprint"> 162 * WebView webview = new WebView(this); 163 * setContentView(webview); 164 * </pre> 165 * 166 * <p>Then load the desired web page:</p> 167 * <pre> 168 * // Simplest usage: note that an exception will NOT be thrown 169 * // if there is an error loading this page (see below). 170 * webview.loadUrl("http://slashdot.org/"); 171 * 172 * // OR, you can also load from an HTML string: 173 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 174 * webview.loadData(summary, "text/html", null); 175 * // ... although note that there are restrictions on what this HTML can do. 176 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 177 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 178 * </pre> 179 * 180 * <p>A WebView has several customization points where you can add your 181 * own behavior. These are:</p> 182 * 183 * <ul> 184 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 185 * This class is called when something that might impact a 186 * browser UI happens, for instance, progress updates and 187 * JavaScript alerts are sent here (see <a 188 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 189 * </li> 190 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 191 * It will be called when things happen that impact the 192 * rendering of the content, eg, errors or form submissions. You 193 * can also intercept URL loading here (via {@link 194 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 195 * shouldOverrideUrlLoading()}).</li> 196 * <li>Modifying the {@link android.webkit.WebSettings}, such as 197 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 198 * setJavaScriptEnabled()}. </li> 199 * <li>Adding JavaScript-to-Java interfaces with the {@link 200 * android.webkit.WebView#addJavascriptInterface} method. 201 * This lets you bind Java objects into the WebView so they can be 202 * controlled from the web pages JavaScript.</li> 203 * </ul> 204 * 205 * <p>Here's a more complicated example, showing error handling, 206 * settings, and progress notification:</p> 207 * 208 * <pre class="prettyprint"> 209 * // Let's display the progress in the activity title bar, like the 210 * // browser app does. 211 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 212 * 213 * webview.getSettings().setJavaScriptEnabled(true); 214 * 215 * final Activity activity = this; 216 * webview.setWebChromeClient(new WebChromeClient() { 217 * public void onProgressChanged(WebView view, int progress) { 218 * // Activities and WebViews measure progress with different scales. 219 * // The progress meter will automatically disappear when we reach 100% 220 * activity.setProgress(progress * 1000); 221 * } 222 * }); 223 * webview.setWebViewClient(new WebViewClient() { 224 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 225 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 226 * } 227 * }); 228 * 229 * webview.loadUrl("http://slashdot.org/"); 230 * </pre> 231 * 232 * <h3>Cookie and window management</h3> 233 * 234 * <p>For obvious security reasons, your application has its own 235 * cache, cookie store etc.—it does not share the Browser 236 * application's data. Cookies are managed on a separate thread, so 237 * operations like index building don't block the UI 238 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 239 * if you want to use cookies in your application. 240 * </p> 241 * 242 * <p>By default, requests by the HTML to open new windows are 243 * ignored. This is true whether they be opened by JavaScript or by 244 * the target attribute on a link. You can customize your 245 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 246 * and render them in whatever manner you want.</p> 247 * 248 * <p>The standard behavior for an Activity is to be destroyed and 249 * recreated when the device orientation or any other configuration changes. This will cause 250 * the WebView to reload the current page. If you don't want that, you 251 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 252 * changes, and then just leave the WebView alone. It'll automatically 253 * re-orient itself as appropriate. Read <a 254 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 255 * more information about how to handle configuration changes during runtime.</p> 256 * 257 * 258 * <h3>Building web pages to support different screen densities</h3> 259 * 260 * <p>The screen density of a device is based on the screen resolution. A screen with low density 261 * has fewer available pixels per inch, where a screen with high density 262 * has more — sometimes significantly more — pixels per inch. The density of a 263 * screen is important because, other things being equal, a UI element (such as a button) whose 264 * height and width are defined in terms of screen pixels will appear larger on the lower density 265 * screen and smaller on the higher density screen. 266 * For simplicity, Android collapses all actual screen densities into three generalized densities: 267 * high, medium, and low.</p> 268 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 269 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 270 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 271 * are bigger). 272 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 273 * you (as a web developer) target screens with different screen densities.</p> 274 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 275 * <ul> 276 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 277 * default scaling factor used for the current device. For example, if the value of {@code 278 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 279 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 280 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 281 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 282 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 283 * (discussed below), then you can stop this default scaling behavior.</li> 284 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 285 * densities for which this style sheet is to be used. The corresponding value should be either 286 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 287 * density, or high density screens, respectively. For example: 288 * <pre> 289 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 290 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 291 * which is the high density pixel ratio.</p> 292 * </li> 293 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 294 * this to specify the target density for which the web page is designed, using the following 295 * values: 296 * <ul> 297 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 298 * occurs.</li> 299 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 300 * as appropriate.</li> 301 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 302 * low density screens scale down. This is also the default behavior.</li> 303 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 304 * as appropriate.</li> 305 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 306 * values are 70-400).</li> 307 * </ul> 308 * <p>Here's an example meta tag to specify the target density:</p> 309 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 310 * </ul> 311 * <p>If you want to modify your web page for different densities, by using the {@code 312 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 313 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 314 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 315 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 316 * 317 * 318 */ 319@Widget 320public class WebView extends AbsoluteLayout 321 implements ViewTreeObserver.OnGlobalFocusChangeListener, 322 ViewGroup.OnHierarchyChangeListener { 323 324 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 325 public void onGlobalLayout() { 326 if (isShown()) { 327 setGLRectViewport(); 328 } 329 } 330 } 331 332 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 333 public void onScrollChanged() { 334 if (isShown()) { 335 setGLRectViewport(); 336 } 337 } 338 } 339 340 // The listener to capture global layout change event. 341 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 342 343 // The listener to capture scroll event. 344 private InnerScrollChangedListener mScrollChangedListener = null; 345 346 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 347 // the screen all-the-time. Good for profiling our drawing code 348 static private final boolean AUTO_REDRAW_HACK = false; 349 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 350 private boolean mAutoRedraw; 351 352 // Reference to the AlertDialog displayed by InvokeListBox. 353 // It's used to dismiss the dialog in destroy if not done before. 354 private AlertDialog mListBoxDialog = null; 355 356 static final String LOGTAG = "webview"; 357 358 private ZoomManager mZoomManager; 359 360 private final Rect mGLRectViewport = new Rect(); 361 private final Rect mViewRectViewport = new Rect(); 362 private boolean mGLViewportEmpty = false; 363 364 /** 365 * Transportation object for returning WebView across thread boundaries. 366 */ 367 public class WebViewTransport { 368 private WebView mWebview; 369 370 /** 371 * Set the WebView to the transportation object. 372 * @param webview The WebView to transport. 373 */ 374 public synchronized void setWebView(WebView webview) { 375 mWebview = webview; 376 } 377 378 /** 379 * Return the WebView object. 380 * @return WebView The transported WebView object. 381 */ 382 public synchronized WebView getWebView() { 383 return mWebview; 384 } 385 } 386 387 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 388 private static OnTrimMemoryListener sInstance = null; 389 390 static void init(Context c) { 391 if (sInstance == null) { 392 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 393 } 394 } 395 396 private OnTrimMemoryListener(Context c) { 397 c.registerComponentCallbacks(this); 398 } 399 400 @Override 401 public void onConfigurationChanged(Configuration newConfig) { 402 // Ignore 403 } 404 405 @Override 406 public void onLowMemory() { 407 // Ignore 408 } 409 410 @Override 411 public void onTrimMemory(int level) { 412 if (DebugFlags.WEB_VIEW) { 413 Log.d("WebView", "onTrimMemory: " + level); 414 } 415 WebView.nativeOnTrimMemory(level); 416 } 417 418 } 419 420 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 421 private final CallbackProxy mCallbackProxy; 422 423 private final WebViewDatabase mDatabase; 424 425 // SSL certificate for the main top-level page (if secure) 426 private SslCertificate mCertificate; 427 428 // Native WebView pointer that is 0 until the native object has been 429 // created. 430 private int mNativeClass; 431 // This would be final but it needs to be set to null when the WebView is 432 // destroyed. 433 private WebViewCore mWebViewCore; 434 // Handler for dispatching UI messages. 435 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 436 private WebTextView mWebTextView; 437 // Used to ignore changes to webkit text that arrives to the UI side after 438 // more key events. 439 private int mTextGeneration; 440 441 /* package */ void incrementTextGeneration() { mTextGeneration++; } 442 443 // Used by WebViewCore to create child views. 444 /* package */ final ViewManager mViewManager; 445 446 // Used to display in full screen mode 447 PluginFullScreenHolder mFullScreenHolder; 448 449 /** 450 * Position of the last touch event in pixels. 451 * Use integer to prevent loss of dragging delta calculation accuracy; 452 * which was done in float and converted to integer, and resulted in gradual 453 * and compounding touch position and view dragging mismatch. 454 */ 455 private int mLastTouchX; 456 private int mLastTouchY; 457 private int mStartTouchX; 458 private int mStartTouchY; 459 private float mAverageAngle; 460 461 /** 462 * Time of the last touch event. 463 */ 464 private long mLastTouchTime; 465 466 /** 467 * Time of the last time sending touch event to WebViewCore 468 */ 469 private long mLastSentTouchTime; 470 471 /** 472 * The minimum elapsed time before sending another ACTION_MOVE event to 473 * WebViewCore. This really should be tuned for each type of the devices. 474 * For example in Google Map api test case, it takes Dream device at least 475 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 476 * triggering the layout and drawing the picture. While the same process 477 * takes 60+ms on the current high speed device. If we make 478 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 479 * to WebViewCore queue and the real layout and draw events will be pushed 480 * to further, which slows down the refresh rate. Choose 50 to favor the 481 * current high speed devices. For Dream like devices, 100 is a better 482 * choice. Maybe make this in the buildspec later. 483 * (Update 12/14/2010: changed to 0 since current device should be able to 484 * handle the raw events and Map team voted to have the raw events too. 485 */ 486 private static final int TOUCH_SENT_INTERVAL = 0; 487 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 488 489 /** 490 * Helper class to get velocity for fling 491 */ 492 VelocityTracker mVelocityTracker; 493 private int mMaximumFling; 494 private float mLastVelocity; 495 private float mLastVelX; 496 private float mLastVelY; 497 498 // The id of the native layer being scrolled. 499 private int mScrollingLayer; 500 private Rect mScrollingLayerRect = new Rect(); 501 502 // only trigger accelerated fling if the new velocity is at least 503 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 504 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 505 506 /** 507 * Touch mode 508 */ 509 private int mTouchMode = TOUCH_DONE_MODE; 510 private static final int TOUCH_INIT_MODE = 1; 511 private static final int TOUCH_DRAG_START_MODE = 2; 512 private static final int TOUCH_DRAG_MODE = 3; 513 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 514 private static final int TOUCH_SHORTPRESS_MODE = 5; 515 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 516 private static final int TOUCH_DONE_MODE = 7; 517 private static final int TOUCH_PINCH_DRAG = 8; 518 private static final int TOUCH_DRAG_LAYER_MODE = 9; 519 520 // Whether to forward the touch events to WebCore 521 // Can only be set by WebKit via JNI. 522 private boolean mForwardTouchEvents = false; 523 524 // Whether to prevent default during touch. The initial value depends on 525 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 526 // for touch down. Otherwise UI will wait for the answer of the first 527 // confirmed move before taking over the control. 528 private static final int PREVENT_DEFAULT_NO = 0; 529 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 530 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 531 private static final int PREVENT_DEFAULT_YES = 3; 532 private static final int PREVENT_DEFAULT_IGNORE = 4; 533 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 534 535 // true when the touch movement exceeds the slop 536 private boolean mConfirmMove; 537 538 // if true, touch events will be first processed by WebCore, if prevent 539 // default is not set, the UI will continue handle them. 540 private boolean mDeferTouchProcess; 541 542 // to avoid interfering with the current touch events, track them 543 // separately. Currently no snapping or fling in the deferred process mode 544 private int mDeferTouchMode = TOUCH_DONE_MODE; 545 private float mLastDeferTouchX; 546 private float mLastDeferTouchY; 547 548 // To keep track of whether the current drag was initiated by a WebTextView, 549 // so that we know not to hide the cursor 550 boolean mDragFromTextInput; 551 552 // Whether or not to draw the cursor ring. 553 private boolean mDrawCursorRing = true; 554 555 // true if onPause has been called (and not onResume) 556 private boolean mIsPaused; 557 558 private HitTestResult mInitialHitTestResult; 559 560 /** 561 * Customizable constant 562 */ 563 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 564 private int mTouchSlopSquare; 565 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 566 private int mDoubleTapSlopSquare; 567 // pre-computed density adjusted navigation slop 568 private int mNavSlop; 569 // This should be ViewConfiguration.getTapTimeout() 570 // But system time out is 100ms, which is too short for the browser. 571 // In the browser, if it switches out of tap too soon, jump tap won't work. 572 // In addition, a double tap on a trackpad will always have a duration of 573 // 300ms, so this value must be at least that (otherwise we will timeout the 574 // first tap and convert it to a long press). 575 private static final int TAP_TIMEOUT = 300; 576 // This should be ViewConfiguration.getLongPressTimeout() 577 // But system time out is 500ms, which is too short for the browser. 578 // With a short timeout, it's difficult to treat trigger a short press. 579 private static final int LONG_PRESS_TIMEOUT = 1000; 580 // needed to avoid flinging after a pause of no movement 581 private static final int MIN_FLING_TIME = 250; 582 // draw unfiltered after drag is held without movement 583 private static final int MOTIONLESS_TIME = 100; 584 // The amount of content to overlap between two screens when going through 585 // pages with the space bar, in pixels. 586 private static final int PAGE_SCROLL_OVERLAP = 24; 587 588 /** 589 * These prevent calling requestLayout if either dimension is fixed. This 590 * depends on the layout parameters and the measure specs. 591 */ 592 boolean mWidthCanMeasure; 593 boolean mHeightCanMeasure; 594 595 // Remember the last dimensions we sent to the native side so we can avoid 596 // sending the same dimensions more than once. 597 int mLastWidthSent; 598 int mLastHeightSent; 599 // Since view height sent to webkit could be fixed to avoid relayout, this 600 // value records the last sent actual view height. 601 int mLastActualHeightSent; 602 603 private int mContentWidth; // cache of value from WebViewCore 604 private int mContentHeight; // cache of value from WebViewCore 605 606 // Need to have the separate control for horizontal and vertical scrollbar 607 // style than the View's single scrollbar style 608 private boolean mOverlayHorizontalScrollbar = true; 609 private boolean mOverlayVerticalScrollbar = false; 610 611 // our standard speed. this way small distances will be traversed in less 612 // time than large distances, but we cap the duration, so that very large 613 // distances won't take too long to get there. 614 private static final int STD_SPEED = 480; // pixels per second 615 // time for the longest scroll animation 616 private static final int MAX_DURATION = 750; // milliseconds 617 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 618 619 // Used by OverScrollGlow 620 OverScroller mScroller; 621 622 private boolean mInOverScrollMode = false; 623 private static Paint mOverScrollBackground; 624 private static Paint mOverScrollBorder; 625 626 private boolean mWrapContent; 627 private static final int MOTIONLESS_FALSE = 0; 628 private static final int MOTIONLESS_PENDING = 1; 629 private static final int MOTIONLESS_TRUE = 2; 630 private static final int MOTIONLESS_IGNORE = 3; 631 private int mHeldMotionless; 632 633 // An instance for injecting accessibility in WebViews with disabled 634 // JavaScript or ones for which no accessibility script exists 635 private AccessibilityInjector mAccessibilityInjector; 636 637 // flag indicating if accessibility script is injected so we 638 // know to handle Shift and arrows natively first 639 private boolean mAccessibilityScriptInjected; 640 641 static final boolean USE_JAVA_TEXT_SELECTION = true; 642 private Region mTextSelectionRegion = new Region(); 643 private Paint mTextSelectionPaint; 644 private Drawable mSelectHandleLeft; 645 private Drawable mSelectHandleRight; 646 647 static final boolean USE_WEBKIT_RINGS = false; 648 // the color used to highlight the touch rectangles 649 private static final int HIGHLIGHT_COLOR = 0x6633b5e5; 650 // the round corner for the highlight path 651 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 652 // the region indicating where the user touched on the screen 653 private Region mTouchHighlightRegion = new Region(); 654 // the paint for the touch highlight 655 private Paint mTouchHightlightPaint; 656 // debug only 657 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 658 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 659 private Paint mTouchCrossHairColor; 660 private int mTouchHighlightX; 661 private int mTouchHighlightY; 662 private long mTouchHighlightRequested; 663 664 // Basically this proxy is used to tell the Video to update layer tree at 665 // SetBaseLayer time and to pause when WebView paused. 666 private HTML5VideoViewProxy mHTML5VideoViewProxy; 667 668 // If we are using a set picture, don't send view updates to webkit 669 private boolean mBlockWebkitViewMessages = false; 670 671 // cached value used to determine if we need to switch drawing models 672 private boolean mHardwareAccelSkia = false; 673 674 /* 675 * Private message ids 676 */ 677 private static final int REMEMBER_PASSWORD = 1; 678 private static final int NEVER_REMEMBER_PASSWORD = 2; 679 private static final int SWITCH_TO_SHORTPRESS = 3; 680 private static final int SWITCH_TO_LONGPRESS = 4; 681 private static final int RELEASE_SINGLE_TAP = 5; 682 private static final int REQUEST_FORM_DATA = 6; 683 private static final int RESUME_WEBCORE_PRIORITY = 7; 684 private static final int DRAG_HELD_MOTIONLESS = 8; 685 private static final int AWAKEN_SCROLL_BARS = 9; 686 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 687 private static final int SCROLL_SELECT_TEXT = 11; 688 689 690 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 691 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 692 693 /* 694 * Package message ids 695 */ 696 static final int SCROLL_TO_MSG_ID = 101; 697 static final int NEW_PICTURE_MSG_ID = 105; 698 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 699 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 700 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 701 static final int UPDATE_ZOOM_RANGE = 109; 702 static final int UNHANDLED_NAV_KEY = 110; 703 static final int CLEAR_TEXT_ENTRY = 111; 704 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 705 static final int SHOW_RECT_MSG_ID = 113; 706 static final int LONG_PRESS_CENTER = 114; 707 static final int PREVENT_TOUCH_ID = 115; 708 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 709 // obj=Rect in doc coordinates 710 static final int INVAL_RECT_MSG_ID = 117; 711 static final int REQUEST_KEYBOARD = 118; 712 static final int DO_MOTION_UP = 119; 713 static final int SHOW_FULLSCREEN = 120; 714 static final int HIDE_FULLSCREEN = 121; 715 static final int DOM_FOCUS_CHANGED = 122; 716 static final int REPLACE_BASE_CONTENT = 123; 717 static final int FORM_DID_BLUR = 124; 718 static final int RETURN_LABEL = 125; 719 static final int FIND_AGAIN = 126; 720 static final int CENTER_FIT_RECT = 127; 721 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 722 static final int SET_SCROLLBAR_MODES = 129; 723 static final int SELECTION_STRING_CHANGED = 130; 724 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 725 static final int SAVE_WEBARCHIVE_FINISHED = 132; 726 727 static final int SET_AUTOFILLABLE = 133; 728 static final int AUTOFILL_COMPLETE = 134; 729 730 static final int SELECT_AT = 135; 731 static final int SCREEN_ON = 136; 732 static final int ENTER_FULLSCREEN_VIDEO = 137; 733 static final int UPDATE_SELECTION = 138; 734 735 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 736 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 737 738 static final String[] HandlerPrivateDebugString = { 739 "REMEMBER_PASSWORD", // = 1; 740 "NEVER_REMEMBER_PASSWORD", // = 2; 741 "SWITCH_TO_SHORTPRESS", // = 3; 742 "SWITCH_TO_LONGPRESS", // = 4; 743 "RELEASE_SINGLE_TAP", // = 5; 744 "REQUEST_FORM_DATA", // = 6; 745 "RESUME_WEBCORE_PRIORITY", // = 7; 746 "DRAG_HELD_MOTIONLESS", // = 8; 747 "AWAKEN_SCROLL_BARS", // = 9; 748 "PREVENT_DEFAULT_TIMEOUT", // = 10; 749 "SCROLL_SELECT_TEXT" // = 11; 750 }; 751 752 static final String[] HandlerPackageDebugString = { 753 "SCROLL_TO_MSG_ID", // = 101; 754 "102", // = 102; 755 "103", // = 103; 756 "104", // = 104; 757 "NEW_PICTURE_MSG_ID", // = 105; 758 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 759 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 760 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 761 "UPDATE_ZOOM_RANGE", // = 109; 762 "UNHANDLED_NAV_KEY", // = 110; 763 "CLEAR_TEXT_ENTRY", // = 111; 764 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 765 "SHOW_RECT_MSG_ID", // = 113; 766 "LONG_PRESS_CENTER", // = 114; 767 "PREVENT_TOUCH_ID", // = 115; 768 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 769 "INVAL_RECT_MSG_ID", // = 117; 770 "REQUEST_KEYBOARD", // = 118; 771 "DO_MOTION_UP", // = 119; 772 "SHOW_FULLSCREEN", // = 120; 773 "HIDE_FULLSCREEN", // = 121; 774 "DOM_FOCUS_CHANGED", // = 122; 775 "REPLACE_BASE_CONTENT", // = 123; 776 "FORM_DID_BLUR", // = 124; 777 "RETURN_LABEL", // = 125; 778 "FIND_AGAIN", // = 126; 779 "CENTER_FIT_RECT", // = 127; 780 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 781 "SET_SCROLLBAR_MODES", // = 129; 782 "SELECTION_STRING_CHANGED", // = 130; 783 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 784 "SAVE_WEBARCHIVE_FINISHED", // = 132; 785 "SET_AUTOFILLABLE", // = 133; 786 "AUTOFILL_COMPLETE", // = 134; 787 "SELECT_AT", // = 135; 788 "SCREEN_ON", // = 136; 789 "ENTER_FULLSCREEN_VIDEO" // = 137; 790 }; 791 792 // If the site doesn't use the viewport meta tag to specify the viewport, 793 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 794 static final int DEFAULT_VIEWPORT_WIDTH = 980; 795 796 // normally we try to fit the content to the minimum preferred width 797 // calculated by the Webkit. To avoid the bad behavior when some site's 798 // minimum preferred width keeps growing when changing the viewport width or 799 // the minimum preferred width is huge, an upper limit is needed. 800 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 801 802 // initial scale in percent. 0 means using default. 803 private int mInitialScaleInPercent = 0; 804 805 // Whether or not a scroll event should be sent to webkit. This is only set 806 // to false when restoring the scroll position. 807 private boolean mSendScrollEvent = true; 808 809 private int mSnapScrollMode = SNAP_NONE; 810 private static final int SNAP_NONE = 0; 811 private static final int SNAP_LOCK = 1; // not a separate state 812 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 813 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 814 private boolean mSnapPositive; 815 816 // keep these in sync with their counterparts in WebView.cpp 817 private static final int DRAW_EXTRAS_NONE = 0; 818 private static final int DRAW_EXTRAS_FIND = 1; 819 private static final int DRAW_EXTRAS_SELECTION = 2; 820 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 821 822 // keep this in sync with WebCore:ScrollbarMode in WebKit 823 private static final int SCROLLBAR_AUTO = 0; 824 private static final int SCROLLBAR_ALWAYSOFF = 1; 825 // as we auto fade scrollbar, this is ignored. 826 private static final int SCROLLBAR_ALWAYSON = 2; 827 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 828 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 829 830 // constants for determining script injection strategy 831 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 832 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 833 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 834 835 // the alias via which accessibility JavaScript interface is exposed 836 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 837 838 // JavaScript to inject the script chooser which will 839 // pick the right script for the current URL 840 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 841 "javascript:(function() {" + 842 " var chooser = document.createElement('script');" + 843 " chooser.type = 'text/javascript';" + 844 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 845 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 846 " })();"; 847 848 // Regular expression that matches the "axs" URL parameter. 849 // The value of 0 means the accessibility script is opted out 850 // The value of 1 means the accessibility script is already injected 851 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 852 853 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 854 private TextToSpeech mTextToSpeech; 855 856 // variable to cache the above pattern in case accessibility is enabled. 857 private Pattern mMatchAxsUrlParameterPattern; 858 859 /** 860 * Max distance to overscroll by in pixels. 861 * This how far content can be pulled beyond its normal bounds by the user. 862 */ 863 private int mOverscrollDistance; 864 865 /** 866 * Max distance to overfling by in pixels. 867 * This is how far flinged content can move beyond the end of its normal bounds. 868 */ 869 private int mOverflingDistance; 870 871 private OverScrollGlow mOverScrollGlow; 872 873 // Used to match key downs and key ups 874 private Vector<Integer> mKeysPressed; 875 876 /* package */ static boolean mLogEvent = true; 877 878 // for event log 879 private long mLastTouchUpTime = 0; 880 881 private WebViewCore.AutoFillData mAutoFillData; 882 883 private static boolean sNotificationsEnabled = true; 884 885 /** 886 * URI scheme for telephone number 887 */ 888 public static final String SCHEME_TEL = "tel:"; 889 /** 890 * URI scheme for email address 891 */ 892 public static final String SCHEME_MAILTO = "mailto:"; 893 /** 894 * URI scheme for map address 895 */ 896 public static final String SCHEME_GEO = "geo:0,0?q="; 897 898 private int mBackgroundColor = Color.WHITE; 899 900 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 901 private int mAutoScrollX = 0; 902 private int mAutoScrollY = 0; 903 private int mMinAutoScrollX = 0; 904 private int mMaxAutoScrollX = 0; 905 private int mMinAutoScrollY = 0; 906 private int mMaxAutoScrollY = 0; 907 private Rect mScrollingLayerBounds = new Rect(); 908 private boolean mSentAutoScrollMessage = false; 909 910 // used for serializing asynchronously handled touch events. 911 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 912 913 // Used to track whether picture updating was paused due to a window focus change. 914 private boolean mPictureUpdatePausedForFocusChange = false; 915 916 // Used to notify listeners of a new picture. 917 private PictureListener mPictureListener; 918 /** 919 * Interface to listen for new pictures as they change. 920 * @deprecated This interface is now obsolete. 921 */ 922 @Deprecated 923 public interface PictureListener { 924 /** 925 * Notify the listener that the picture has changed. 926 * @param view The WebView that owns the picture. 927 * @param picture The new picture. 928 * @deprecated This method is now obsolete. 929 */ 930 @Deprecated 931 public void onNewPicture(WebView view, Picture picture); 932 } 933 934 // FIXME: Want to make this public, but need to change the API file. 935 public /*static*/ class HitTestResult { 936 /** 937 * Default HitTestResult, where the target is unknown 938 */ 939 public static final int UNKNOWN_TYPE = 0; 940 /** 941 * @deprecated This type is no longer used. 942 */ 943 @Deprecated 944 public static final int ANCHOR_TYPE = 1; 945 /** 946 * HitTestResult for hitting a phone number 947 */ 948 public static final int PHONE_TYPE = 2; 949 /** 950 * HitTestResult for hitting a map address 951 */ 952 public static final int GEO_TYPE = 3; 953 /** 954 * HitTestResult for hitting an email address 955 */ 956 public static final int EMAIL_TYPE = 4; 957 /** 958 * HitTestResult for hitting an HTML::img tag 959 */ 960 public static final int IMAGE_TYPE = 5; 961 /** 962 * @deprecated This type is no longer used. 963 */ 964 @Deprecated 965 public static final int IMAGE_ANCHOR_TYPE = 6; 966 /** 967 * HitTestResult for hitting a HTML::a tag with src=http 968 */ 969 public static final int SRC_ANCHOR_TYPE = 7; 970 /** 971 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 972 */ 973 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 974 /** 975 * HitTestResult for hitting an edit text area 976 */ 977 public static final int EDIT_TEXT_TYPE = 9; 978 979 private int mType; 980 private String mExtra; 981 982 HitTestResult() { 983 mType = UNKNOWN_TYPE; 984 } 985 986 private void setType(int type) { 987 mType = type; 988 } 989 990 private void setExtra(String extra) { 991 mExtra = extra; 992 } 993 994 public int getType() { 995 return mType; 996 } 997 998 public String getExtra() { 999 return mExtra; 1000 } 1001 } 1002 1003 /** 1004 * Construct a new WebView with a Context object. 1005 * @param context A Context object used to access application assets. 1006 */ 1007 public WebView(Context context) { 1008 this(context, null); 1009 } 1010 1011 /** 1012 * Construct a new WebView with layout parameters. 1013 * @param context A Context object used to access application assets. 1014 * @param attrs An AttributeSet passed to our parent. 1015 */ 1016 public WebView(Context context, AttributeSet attrs) { 1017 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1018 } 1019 1020 /** 1021 * Construct a new WebView with layout parameters and a default style. 1022 * @param context A Context object used to access application assets. 1023 * @param attrs An AttributeSet passed to our parent. 1024 * @param defStyle The default style resource ID. 1025 */ 1026 public WebView(Context context, AttributeSet attrs, int defStyle) { 1027 this(context, attrs, defStyle, false); 1028 } 1029 1030 /** 1031 * Construct a new WebView with layout parameters and a default style. 1032 * @param context A Context object used to access application assets. 1033 * @param attrs An AttributeSet passed to our parent. 1034 * @param defStyle The default style resource ID. 1035 */ 1036 public WebView(Context context, AttributeSet attrs, int defStyle, 1037 boolean privateBrowsing) { 1038 this(context, attrs, defStyle, null, privateBrowsing); 1039 } 1040 1041 /** 1042 * Construct a new WebView with layout parameters, a default style and a set 1043 * of custom Javscript interfaces to be added to the WebView at initialization 1044 * time. This guarantees that these interfaces will be available when the JS 1045 * context is initialized. 1046 * @param context A Context object used to access application assets. 1047 * @param attrs An AttributeSet passed to our parent. 1048 * @param defStyle The default style resource ID. 1049 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1050 * object implementing those interfaces, as values. 1051 * @hide pending API council approval. 1052 */ 1053 protected WebView(Context context, AttributeSet attrs, int defStyle, 1054 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1055 super(context, attrs, defStyle); 1056 checkThread(); 1057 1058 if (context == null) { 1059 throw new IllegalArgumentException("Invalid context argument"); 1060 } 1061 1062 // Used by the chrome stack to find application paths 1063 JniUtil.setContext(context); 1064 1065 mCallbackProxy = new CallbackProxy(context, this); 1066 mViewManager = new ViewManager(this); 1067 L10nUtils.setApplicationContext(context.getApplicationContext()); 1068 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1069 mDatabase = WebViewDatabase.getInstance(context); 1070 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1071 mZoomManager = new ZoomManager(this, mCallbackProxy); 1072 1073 /* The init method must follow the creation of certain member variables, 1074 * such as the mZoomManager. 1075 */ 1076 init(); 1077 setupPackageListener(context); 1078 setupProxyListener(context); 1079 updateMultiTouchSupport(context); 1080 1081 if (privateBrowsing) { 1082 startPrivateBrowsing(); 1083 } 1084 1085 mAutoFillData = new WebViewCore.AutoFillData(); 1086 } 1087 1088 private static class ProxyReceiver extends BroadcastReceiver { 1089 @Override 1090 public void onReceive(Context context, Intent intent) { 1091 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1092 handleProxyBroadcast(intent); 1093 } 1094 } 1095 } 1096 1097 /* 1098 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1099 */ 1100 private static ProxyReceiver sProxyReceiver; 1101 1102 /* 1103 * @param context This method expects this to be a valid context 1104 */ 1105 private static synchronized void setupProxyListener(Context context) { 1106 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1107 return; 1108 } 1109 IntentFilter filter = new IntentFilter(); 1110 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1111 sProxyReceiver = new ProxyReceiver(); 1112 Intent currentProxy = context.getApplicationContext().registerReceiver( 1113 sProxyReceiver, filter); 1114 if (currentProxy != null) { 1115 handleProxyBroadcast(currentProxy); 1116 } 1117 } 1118 1119 /* 1120 * @param context This method expects this to be a valid context 1121 */ 1122 private static synchronized void disableProxyListener(Context context) { 1123 if (sProxyReceiver == null) 1124 return; 1125 1126 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1127 sProxyReceiver = null; 1128 } 1129 1130 private static void handleProxyBroadcast(Intent intent) { 1131 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1132 if (proxyProperties == null || proxyProperties.getHost() == null) { 1133 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1134 return; 1135 } 1136 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1137 } 1138 1139 /* 1140 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1141 * or ACTION_PACKAGE_REMOVED. 1142 */ 1143 private static boolean sPackageInstallationReceiverAdded = false; 1144 1145 /* 1146 * A set of Google packages we monitor for the 1147 * navigator.isApplicationInstalled() API. Add additional packages as 1148 * needed. 1149 */ 1150 private static Set<String> sGoogleApps; 1151 static { 1152 sGoogleApps = new HashSet<String>(); 1153 sGoogleApps.add("com.google.android.youtube"); 1154 } 1155 1156 private static class PackageListener extends BroadcastReceiver { 1157 @Override 1158 public void onReceive(Context context, Intent intent) { 1159 final String action = intent.getAction(); 1160 final String packageName = intent.getData().getSchemeSpecificPart(); 1161 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1162 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1163 // if it is replacing, refreshPlugins() when adding 1164 return; 1165 } 1166 1167 if (sGoogleApps.contains(packageName)) { 1168 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1169 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1170 } else { 1171 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1172 } 1173 } 1174 1175 PluginManager pm = PluginManager.getInstance(context); 1176 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1177 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1178 } 1179 } 1180 } 1181 1182 private void setupPackageListener(Context context) { 1183 1184 /* 1185 * we must synchronize the instance check and the creation of the 1186 * receiver to ensure that only ONE receiver exists for all WebView 1187 * instances. 1188 */ 1189 synchronized (WebView.class) { 1190 1191 // if the receiver already exists then we do not need to register it 1192 // again 1193 if (sPackageInstallationReceiverAdded) { 1194 return; 1195 } 1196 1197 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1198 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1199 filter.addDataScheme("package"); 1200 BroadcastReceiver packageListener = new PackageListener(); 1201 context.getApplicationContext().registerReceiver(packageListener, filter); 1202 sPackageInstallationReceiverAdded = true; 1203 } 1204 1205 // check if any of the monitored apps are already installed 1206 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1207 1208 @Override 1209 protected Set<String> doInBackground(Void... unused) { 1210 Set<String> installedPackages = new HashSet<String>(); 1211 PackageManager pm = mContext.getPackageManager(); 1212 for (String name : sGoogleApps) { 1213 try { 1214 PackageInfo pInfo = pm.getPackageInfo(name, 1215 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1216 installedPackages.add(name); 1217 } catch (PackageManager.NameNotFoundException e) { 1218 // package not found 1219 } 1220 } 1221 return installedPackages; 1222 } 1223 1224 // Executes on the UI thread 1225 @Override 1226 protected void onPostExecute(Set<String> installedPackages) { 1227 if (mWebViewCore != null) { 1228 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1229 } 1230 } 1231 }; 1232 task.execute(); 1233 } 1234 1235 void updateMultiTouchSupport(Context context) { 1236 mZoomManager.updateMultiTouchSupport(context); 1237 } 1238 1239 private void init() { 1240 OnTrimMemoryListener.init(getContext()); 1241 1242 setWillNotDraw(false); 1243 setFocusable(true); 1244 setFocusableInTouchMode(true); 1245 setClickable(true); 1246 setLongClickable(true); 1247 1248 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1249 int slop = configuration.getScaledTouchSlop(); 1250 mTouchSlopSquare = slop * slop; 1251 slop = configuration.getScaledDoubleTapSlop(); 1252 mDoubleTapSlopSquare = slop * slop; 1253 final float density = getContext().getResources().getDisplayMetrics().density; 1254 // use one line height, 16 based on our current default font, for how 1255 // far we allow a touch be away from the edge of a link 1256 mNavSlop = (int) (16 * density); 1257 mZoomManager.init(density); 1258 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1259 1260 // Compute the inverse of the density squared. 1261 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1262 1263 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1264 mOverflingDistance = configuration.getScaledOverflingDistance(); 1265 1266 setScrollBarStyle(super.getScrollBarStyle()); 1267 // Initially use a size of two, since the user is likely to only hold 1268 // down two keys at a time (shift + another key) 1269 mKeysPressed = new Vector<Integer>(2); 1270 mHTML5VideoViewProxy = null ; 1271 } 1272 1273 @Override 1274 public boolean shouldDelayChildPressedState() { 1275 return true; 1276 } 1277 1278 /** 1279 * Adds accessibility APIs to JavaScript. 1280 * 1281 * Note: This method is responsible to performing the necessary 1282 * check if the accessibility APIs should be exposed. 1283 */ 1284 private void addAccessibilityApisToJavaScript() { 1285 if (AccessibilityManager.getInstance(mContext).isEnabled() 1286 && getSettings().getJavaScriptEnabled()) { 1287 // exposing the TTS for now ... 1288 mTextToSpeech = new TextToSpeech(getContext(), null); 1289 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1290 } 1291 } 1292 1293 /** 1294 * Removes accessibility APIs from JavaScript. 1295 */ 1296 private void removeAccessibilityApisFromJavaScript() { 1297 // exposing the TTS for now ... 1298 if (mTextToSpeech != null) { 1299 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1300 mTextToSpeech.shutdown(); 1301 mTextToSpeech = null; 1302 } 1303 } 1304 1305 @Override 1306 public void setOverScrollMode(int mode) { 1307 super.setOverScrollMode(mode); 1308 if (mode != OVER_SCROLL_NEVER) { 1309 if (mOverScrollGlow == null) { 1310 mOverScrollGlow = new OverScrollGlow(this); 1311 } 1312 } else { 1313 mOverScrollGlow = null; 1314 } 1315 } 1316 1317 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1318 final float density = mContext.getResources().getDisplayMetrics().density 1319 * 100 / zoomDensity; 1320 mNavSlop = (int) (16 * density); 1321 mZoomManager.updateDefaultZoomDensity(density); 1322 } 1323 1324 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1325 String password, final Message resumeMsg) { 1326 boolean rVal = false; 1327 if (resumeMsg == null) { 1328 // null resumeMsg implies saving password silently 1329 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1330 } else { 1331 final Message remember = mPrivateHandler.obtainMessage( 1332 REMEMBER_PASSWORD); 1333 remember.getData().putString("host", schemePlusHost); 1334 remember.getData().putString("username", username); 1335 remember.getData().putString("password", password); 1336 remember.obj = resumeMsg; 1337 1338 final Message neverRemember = mPrivateHandler.obtainMessage( 1339 NEVER_REMEMBER_PASSWORD); 1340 neverRemember.getData().putString("host", schemePlusHost); 1341 neverRemember.getData().putString("username", username); 1342 neverRemember.getData().putString("password", password); 1343 neverRemember.obj = resumeMsg; 1344 1345 new AlertDialog.Builder(getContext()) 1346 .setTitle(com.android.internal.R.string.save_password_label) 1347 .setMessage(com.android.internal.R.string.save_password_message) 1348 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1349 new DialogInterface.OnClickListener() { 1350 public void onClick(DialogInterface dialog, int which) { 1351 resumeMsg.sendToTarget(); 1352 } 1353 }) 1354 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1355 new DialogInterface.OnClickListener() { 1356 public void onClick(DialogInterface dialog, int which) { 1357 remember.sendToTarget(); 1358 } 1359 }) 1360 .setNegativeButton(com.android.internal.R.string.save_password_never, 1361 new DialogInterface.OnClickListener() { 1362 public void onClick(DialogInterface dialog, int which) { 1363 neverRemember.sendToTarget(); 1364 } 1365 }) 1366 .setOnCancelListener(new OnCancelListener() { 1367 public void onCancel(DialogInterface dialog) { 1368 resumeMsg.sendToTarget(); 1369 } 1370 }).show(); 1371 // Return true so that WebViewCore will pause while the dialog is 1372 // up. 1373 rVal = true; 1374 } 1375 return rVal; 1376 } 1377 1378 @Override 1379 public void setScrollBarStyle(int style) { 1380 if (style == View.SCROLLBARS_INSIDE_INSET 1381 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1382 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1383 } else { 1384 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1385 } 1386 super.setScrollBarStyle(style); 1387 } 1388 1389 /** 1390 * Specify whether the horizontal scrollbar has overlay style. 1391 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1392 */ 1393 public void setHorizontalScrollbarOverlay(boolean overlay) { 1394 checkThread(); 1395 mOverlayHorizontalScrollbar = overlay; 1396 } 1397 1398 /** 1399 * Specify whether the vertical scrollbar has overlay style. 1400 * @param overlay TRUE if vertical scrollbar should have overlay style. 1401 */ 1402 public void setVerticalScrollbarOverlay(boolean overlay) { 1403 checkThread(); 1404 mOverlayVerticalScrollbar = overlay; 1405 } 1406 1407 /** 1408 * Return whether horizontal scrollbar has overlay style 1409 * @return TRUE if horizontal scrollbar has overlay style. 1410 */ 1411 public boolean overlayHorizontalScrollbar() { 1412 checkThread(); 1413 return mOverlayHorizontalScrollbar; 1414 } 1415 1416 /** 1417 * Return whether vertical scrollbar has overlay style 1418 * @return TRUE if vertical scrollbar has overlay style. 1419 */ 1420 public boolean overlayVerticalScrollbar() { 1421 checkThread(); 1422 return mOverlayVerticalScrollbar; 1423 } 1424 1425 /* 1426 * Return the width of the view where the content of WebView should render 1427 * to. 1428 * Note: this can be called from WebCoreThread. 1429 */ 1430 /* package */ int getViewWidth() { 1431 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1432 return getWidth(); 1433 } else { 1434 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1435 } 1436 } 1437 1438 /** 1439 * returns the height of the titlebarview (if any). Does not care about 1440 * scrolling 1441 * @hide 1442 */ 1443 protected int getTitleHeight() { 1444 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1445 } 1446 1447 /** 1448 * Return the amount of the titlebarview (if any) that is visible 1449 * 1450 * @deprecated This method is now obsolete. 1451 */ 1452 public int getVisibleTitleHeight() { 1453 checkThread(); 1454 return getVisibleTitleHeightImpl(); 1455 } 1456 1457 private int getVisibleTitleHeightImpl() { 1458 // need to restrict mScrollY due to over scroll 1459 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1460 } 1461 1462 /* 1463 * Return the height of the view where the content of WebView should render 1464 * to. Note that this excludes mTitleBar, if there is one. 1465 * Note: this can be called from WebCoreThread. 1466 */ 1467 /* package */ int getViewHeight() { 1468 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1469 } 1470 1471 int getViewHeightWithTitle() { 1472 int height = getHeight(); 1473 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1474 height -= getHorizontalScrollbarHeight(); 1475 } 1476 return height; 1477 } 1478 1479 /** 1480 * @return The SSL certificate for the main top-level page or null if 1481 * there is no certificate (the site is not secure). 1482 */ 1483 public SslCertificate getCertificate() { 1484 checkThread(); 1485 return mCertificate; 1486 } 1487 1488 /** 1489 * Sets the SSL certificate for the main top-level page. 1490 */ 1491 public void setCertificate(SslCertificate certificate) { 1492 checkThread(); 1493 if (DebugFlags.WEB_VIEW) { 1494 Log.v(LOGTAG, "setCertificate=" + certificate); 1495 } 1496 // here, the certificate can be null (if the site is not secure) 1497 mCertificate = certificate; 1498 } 1499 1500 //------------------------------------------------------------------------- 1501 // Methods called by activity 1502 //------------------------------------------------------------------------- 1503 1504 /** 1505 * Save the username and password for a particular host in the WebView's 1506 * internal database. 1507 * @param host The host that required the credentials. 1508 * @param username The username for the given host. 1509 * @param password The password for the given host. 1510 */ 1511 public void savePassword(String host, String username, String password) { 1512 checkThread(); 1513 mDatabase.setUsernamePassword(host, username, password); 1514 } 1515 1516 /** 1517 * Set the HTTP authentication credentials for a given host and realm. 1518 * 1519 * @param host The host for the credentials. 1520 * @param realm The realm for the credentials. 1521 * @param username The username for the password. If it is null, it means 1522 * password can't be saved. 1523 * @param password The password 1524 */ 1525 public void setHttpAuthUsernamePassword(String host, String realm, 1526 String username, String password) { 1527 checkThread(); 1528 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1529 } 1530 1531 /** 1532 * Retrieve the HTTP authentication username and password for a given 1533 * host & realm pair 1534 * 1535 * @param host The host for which the credentials apply. 1536 * @param realm The realm for which the credentials apply. 1537 * @return String[] if found, String[0] is username, which can be null and 1538 * String[1] is password. Return null if it can't find anything. 1539 */ 1540 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1541 checkThread(); 1542 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1543 } 1544 1545 /** 1546 * Remove Find or Select ActionModes, if active. 1547 */ 1548 private void clearActionModes() { 1549 if (mSelectCallback != null) { 1550 mSelectCallback.finish(); 1551 } 1552 if (mFindCallback != null) { 1553 mFindCallback.finish(); 1554 } 1555 } 1556 1557 /** 1558 * Called to clear state when moving from one page to another, or changing 1559 * in some other way that makes elements associated with the current page 1560 * (such as WebTextView or ActionModes) no longer relevant. 1561 */ 1562 private void clearHelpers() { 1563 clearTextEntry(); 1564 clearActionModes(); 1565 dismissFullScreenMode(); 1566 } 1567 1568 /** 1569 * Destroy the internal state of the WebView. This method should be called 1570 * after the WebView has been removed from the view system. No other 1571 * methods may be called on a WebView after destroy. 1572 */ 1573 public void destroy() { 1574 checkThread(); 1575 destroyImpl(); 1576 } 1577 1578 private void destroyImpl() { 1579 clearHelpers(); 1580 if (mListBoxDialog != null) { 1581 mListBoxDialog.dismiss(); 1582 mListBoxDialog = null; 1583 } 1584 if (mNativeClass != 0) nativeStopGL(); 1585 if (mWebViewCore != null) { 1586 // Set the handlers to null before destroying WebViewCore so no 1587 // more messages will be posted. 1588 mCallbackProxy.setWebViewClient(null); 1589 mCallbackProxy.setWebChromeClient(null); 1590 // Tell WebViewCore to destroy itself 1591 synchronized (this) { 1592 WebViewCore webViewCore = mWebViewCore; 1593 mWebViewCore = null; // prevent using partial webViewCore 1594 webViewCore.destroy(); 1595 } 1596 // Remove any pending messages that might not be serviced yet. 1597 mPrivateHandler.removeCallbacksAndMessages(null); 1598 mCallbackProxy.removeCallbacksAndMessages(null); 1599 // Wake up the WebCore thread just in case it is waiting for a 1600 // JavaScript dialog. 1601 synchronized (mCallbackProxy) { 1602 mCallbackProxy.notify(); 1603 } 1604 } 1605 if (mNativeClass != 0) { 1606 nativeDestroy(); 1607 mNativeClass = 0; 1608 } 1609 } 1610 1611 /** 1612 * Enables platform notifications of data state and proxy changes. 1613 * Notifications are enabled by default. 1614 * 1615 * @deprecated This method is now obsolete. 1616 */ 1617 @Deprecated 1618 public static void enablePlatformNotifications() { 1619 checkThread(); 1620 synchronized (WebView.class) { 1621 Network.enablePlatformNotifications(); 1622 sNotificationsEnabled = true; 1623 Context context = JniUtil.getContext(); 1624 if (context != null) 1625 setupProxyListener(context); 1626 } 1627 } 1628 1629 /** 1630 * Disables platform notifications of data state and proxy changes. 1631 * Notifications are enabled by default. 1632 * 1633 * @deprecated This method is now obsolete. 1634 */ 1635 @Deprecated 1636 public static void disablePlatformNotifications() { 1637 checkThread(); 1638 synchronized (WebView.class) { 1639 Network.disablePlatformNotifications(); 1640 sNotificationsEnabled = false; 1641 Context context = JniUtil.getContext(); 1642 if (context != null) 1643 disableProxyListener(context); 1644 } 1645 } 1646 1647 /** 1648 * Sets JavaScript engine flags. 1649 * 1650 * @param flags JS engine flags in a String 1651 * 1652 * @hide pending API solidification 1653 */ 1654 public void setJsFlags(String flags) { 1655 checkThread(); 1656 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1657 } 1658 1659 /** 1660 * Inform WebView of the network state. This is used to set 1661 * the JavaScript property window.navigator.isOnline and 1662 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1663 * @param networkUp boolean indicating if network is available 1664 */ 1665 public void setNetworkAvailable(boolean networkUp) { 1666 checkThread(); 1667 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1668 networkUp ? 1 : 0, 0); 1669 } 1670 1671 /** 1672 * Inform WebView about the current network type. 1673 * {@hide} 1674 */ 1675 public void setNetworkType(String type, String subtype) { 1676 checkThread(); 1677 Map<String, String> map = new HashMap<String, String>(); 1678 map.put("type", type); 1679 map.put("subtype", subtype); 1680 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1681 } 1682 /** 1683 * Save the state of this WebView used in 1684 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1685 * method no longer stores the display data for this WebView. The previous 1686 * behavior could potentially leak files if {@link #restoreState} was never 1687 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1688 * and restoring the display data. 1689 * @param outState The Bundle to store the WebView state. 1690 * @return The same copy of the back/forward list used to save the state. If 1691 * saveState fails, the returned list will be null. 1692 * @see #savePicture 1693 * @see #restorePicture 1694 */ 1695 public WebBackForwardList saveState(Bundle outState) { 1696 checkThread(); 1697 if (outState == null) { 1698 return null; 1699 } 1700 // We grab a copy of the back/forward list because a client of WebView 1701 // may have invalidated the history list by calling clearHistory. 1702 WebBackForwardList list = copyBackForwardList(); 1703 final int currentIndex = list.getCurrentIndex(); 1704 final int size = list.getSize(); 1705 // We should fail saving the state if the list is empty or the index is 1706 // not in a valid range. 1707 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1708 return null; 1709 } 1710 outState.putInt("index", currentIndex); 1711 // FIXME: This should just be a byte[][] instead of ArrayList but 1712 // Parcel.java does not have the code to handle multi-dimensional 1713 // arrays. 1714 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1715 for (int i = 0; i < size; i++) { 1716 WebHistoryItem item = list.getItemAtIndex(i); 1717 if (null == item) { 1718 // FIXME: this shouldn't happen 1719 // need to determine how item got set to null 1720 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1721 return null; 1722 } 1723 byte[] data = item.getFlattenedData(); 1724 if (data == null) { 1725 // It would be very odd to not have any data for a given history 1726 // item. And we will fail to rebuild the history list without 1727 // flattened data. 1728 return null; 1729 } 1730 history.add(data); 1731 } 1732 outState.putSerializable("history", history); 1733 if (mCertificate != null) { 1734 outState.putBundle("certificate", 1735 SslCertificate.saveState(mCertificate)); 1736 } 1737 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1738 mZoomManager.saveZoomState(outState); 1739 return list; 1740 } 1741 1742 /** 1743 * Save the current display data to the Bundle given. Used in conjunction 1744 * with {@link #saveState}. 1745 * @param b A Bundle to store the display data. 1746 * @param dest The file to store the serialized picture data. Will be 1747 * overwritten with this WebView's picture data. 1748 * @return True if the picture was successfully saved. 1749 * @deprecated This method is now obsolete. 1750 */ 1751 @Deprecated 1752 public boolean savePicture(Bundle b, final File dest) { 1753 checkThread(); 1754 if (dest == null || b == null) { 1755 return false; 1756 } 1757 final Picture p = capturePicture(); 1758 // Use a temporary file while writing to ensure the destination file 1759 // contains valid data. 1760 final File temp = new File(dest.getPath() + ".writing"); 1761 new Thread(new Runnable() { 1762 public void run() { 1763 FileOutputStream out = null; 1764 try { 1765 out = new FileOutputStream(temp); 1766 p.writeToStream(out); 1767 // Writing the picture succeeded, rename the temporary file 1768 // to the destination. 1769 temp.renameTo(dest); 1770 } catch (Exception e) { 1771 // too late to do anything about it. 1772 } finally { 1773 if (out != null) { 1774 try { 1775 out.close(); 1776 } catch (Exception e) { 1777 // Can't do anything about that 1778 } 1779 } 1780 temp.delete(); 1781 } 1782 } 1783 }).start(); 1784 // now update the bundle 1785 b.putInt("scrollX", mScrollX); 1786 b.putInt("scrollY", mScrollY); 1787 mZoomManager.saveZoomState(b); 1788 return true; 1789 } 1790 1791 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1792 int sx = b.getInt("scrollX", 0); 1793 int sy = b.getInt("scrollY", 0); 1794 1795 mDrawHistory = true; 1796 mHistoryPicture = p; 1797 1798 mScrollX = sx; 1799 mScrollY = sy; 1800 mZoomManager.restoreZoomState(b); 1801 final float scale = mZoomManager.getScale(); 1802 mHistoryWidth = Math.round(p.getWidth() * scale); 1803 mHistoryHeight = Math.round(p.getHeight() * scale); 1804 1805 invalidate(); 1806 } 1807 1808 /** 1809 * Restore the display data that was save in {@link #savePicture}. Used in 1810 * conjunction with {@link #restoreState}. 1811 * 1812 * Note that this will not work if the WebView is hardware accelerated. 1813 * @param b A Bundle containing the saved display data. 1814 * @param src The file where the picture data was stored. 1815 * @return True if the picture was successfully restored. 1816 * @deprecated This method is now obsolete. 1817 */ 1818 @Deprecated 1819 public boolean restorePicture(Bundle b, File src) { 1820 checkThread(); 1821 if (src == null || b == null) { 1822 return false; 1823 } 1824 if (!src.exists()) { 1825 return false; 1826 } 1827 try { 1828 final FileInputStream in = new FileInputStream(src); 1829 final Bundle copy = new Bundle(b); 1830 new Thread(new Runnable() { 1831 public void run() { 1832 try { 1833 final Picture p = Picture.createFromStream(in); 1834 if (p != null) { 1835 // Post a runnable on the main thread to update the 1836 // history picture fields. 1837 mPrivateHandler.post(new Runnable() { 1838 public void run() { 1839 restoreHistoryPictureFields(p, copy); 1840 } 1841 }); 1842 } 1843 } finally { 1844 try { 1845 in.close(); 1846 } catch (Exception e) { 1847 // Nothing we can do now. 1848 } 1849 } 1850 } 1851 }).start(); 1852 } catch (FileNotFoundException e){ 1853 e.printStackTrace(); 1854 } 1855 return true; 1856 } 1857 1858 /** 1859 * Saves the view data to the output stream. The output is highly 1860 * version specific, and may not be able to be loaded by newer versions 1861 * of WebView. 1862 * @param stream The {@link OutputStream} to save to 1863 * @return True if saved successfully 1864 * @hide 1865 */ 1866 public boolean saveViewState(OutputStream stream) { 1867 try { 1868 return ViewStateSerializer.serializeViewState(stream, this); 1869 } catch (IOException e) { 1870 Log.w(LOGTAG, "Failed to saveViewState", e); 1871 } 1872 return false; 1873 } 1874 1875 /** 1876 * Loads the view data from the input stream. See 1877 * {@link #saveViewState(OutputStream)} for more information. 1878 * @param stream The {@link InputStream} to load from 1879 * @return True if loaded successfully 1880 * @hide 1881 */ 1882 public boolean loadViewState(InputStream stream) { 1883 try { 1884 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1885 mBlockWebkitViewMessages = true; 1886 setNewPicture(mLoadedPicture, true); 1887 return true; 1888 } catch (IOException e) { 1889 Log.w(LOGTAG, "Failed to loadViewState", e); 1890 } 1891 return false; 1892 } 1893 1894 /** 1895 * Clears the view state set with {@link #loadViewState(InputStream)}. 1896 * This WebView will then switch to showing the content from webkit 1897 * @hide 1898 */ 1899 public void clearViewState() { 1900 mBlockWebkitViewMessages = false; 1901 mLoadedPicture = null; 1902 invalidate(); 1903 } 1904 1905 /** 1906 * Restore the state of this WebView from the given map used in 1907 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1908 * be called to restore the state of the WebView before using the object. If 1909 * it is called after the WebView has had a chance to build state (load 1910 * pages, create a back/forward list, etc.) there may be undesirable 1911 * side-effects. Please note that this method no longer restores the 1912 * display data for this WebView. See {@link #savePicture} and {@link 1913 * #restorePicture} for saving and restoring the display data. 1914 * @param inState The incoming Bundle of state. 1915 * @return The restored back/forward list or null if restoreState failed. 1916 * @see #savePicture 1917 * @see #restorePicture 1918 */ 1919 public WebBackForwardList restoreState(Bundle inState) { 1920 checkThread(); 1921 WebBackForwardList returnList = null; 1922 if (inState == null) { 1923 return returnList; 1924 } 1925 if (inState.containsKey("index") && inState.containsKey("history")) { 1926 mCertificate = SslCertificate.restoreState( 1927 inState.getBundle("certificate")); 1928 1929 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1930 final int index = inState.getInt("index"); 1931 // We can't use a clone of the list because we need to modify the 1932 // shared copy, so synchronize instead to prevent concurrent 1933 // modifications. 1934 synchronized (list) { 1935 final List<byte[]> history = 1936 (List<byte[]>) inState.getSerializable("history"); 1937 final int size = history.size(); 1938 // Check the index bounds so we don't crash in native code while 1939 // restoring the history index. 1940 if (index < 0 || index >= size) { 1941 return null; 1942 } 1943 for (int i = 0; i < size; i++) { 1944 byte[] data = history.remove(0); 1945 if (data == null) { 1946 // If we somehow have null data, we cannot reconstruct 1947 // the item and thus our history list cannot be rebuilt. 1948 return null; 1949 } 1950 WebHistoryItem item = new WebHistoryItem(data); 1951 list.addHistoryItem(item); 1952 } 1953 // Grab the most recent copy to return to the caller. 1954 returnList = copyBackForwardList(); 1955 // Update the copy to have the correct index. 1956 returnList.setCurrentIndex(index); 1957 } 1958 // Restore private browsing setting. 1959 if (inState.getBoolean("privateBrowsingEnabled")) { 1960 getSettings().setPrivateBrowsingEnabled(true); 1961 } 1962 mZoomManager.restoreZoomState(inState); 1963 // Remove all pending messages because we are restoring previous 1964 // state. 1965 mWebViewCore.removeMessages(); 1966 // Send a restore state message. 1967 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1968 } 1969 return returnList; 1970 } 1971 1972 /** 1973 * Load the given url with the extra headers. 1974 * @param url The url of the resource to load. 1975 * @param extraHeaders The extra headers sent with this url. This should not 1976 * include the common headers like "user-agent". If it does, it 1977 * will be replaced by the intrinsic value of the WebView. 1978 */ 1979 public void loadUrl(String url, Map<String, String> extraHeaders) { 1980 checkThread(); 1981 loadUrlImpl(url, extraHeaders); 1982 } 1983 1984 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 1985 switchOutDrawHistory(); 1986 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1987 arg.mUrl = url; 1988 arg.mExtraHeaders = extraHeaders; 1989 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1990 clearHelpers(); 1991 } 1992 1993 /** 1994 * Load the given url. 1995 * @param url The url of the resource to load. 1996 */ 1997 public void loadUrl(String url) { 1998 checkThread(); 1999 loadUrlImpl(url); 2000 } 2001 2002 private void loadUrlImpl(String url) { 2003 if (url == null) { 2004 return; 2005 } 2006 loadUrlImpl(url, null); 2007 } 2008 2009 /** 2010 * Load the url with postData using "POST" method into the WebView. If url 2011 * is not a network url, it will be loaded with {link 2012 * {@link #loadUrl(String)} instead. 2013 * 2014 * @param url The url of the resource to load. 2015 * @param postData The data will be passed to "POST" request. 2016 */ 2017 public void postUrl(String url, byte[] postData) { 2018 checkThread(); 2019 if (URLUtil.isNetworkUrl(url)) { 2020 switchOutDrawHistory(); 2021 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2022 arg.mUrl = url; 2023 arg.mPostData = postData; 2024 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2025 clearHelpers(); 2026 } else { 2027 loadUrlImpl(url); 2028 } 2029 } 2030 2031 /** 2032 * Load the given data into the WebView using a 'data' scheme URL. 2033 * <p> 2034 * Note that JavaScript's same origin policy means that script running in a 2035 * page loaded using this method will be unable to access content loaded 2036 * using any scheme other than 'data', including 'http(s)'. To avoid this 2037 * restriction, use {@link 2038 * #loadDataWithBaseURL(String,String,String,String,String) 2039 * loadDataWithBaseURL()} with an appropriate base URL. 2040 * <p> 2041 * If the value of the encoding parameter is 'base64', then the data must 2042 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2043 * octets inside the range of safe URL characters and use the standard %xx 2044 * hex encoding of URLs for octets outside that range. 2045 * @param data A String of data in the given encoding. 2046 * @param mimeType The MIMEType of the data, e.g. 'text/html'. 2047 * @param encoding The encoding of the data. 2048 */ 2049 public void loadData(String data, String mimeType, String encoding) { 2050 checkThread(); 2051 loadDataImpl(data, mimeType, encoding); 2052 } 2053 2054 private void loadDataImpl(String data, String mimeType, String encoding) { 2055 StringBuilder dataUrl = new StringBuilder("data:"); 2056 dataUrl.append(mimeType); 2057 if ("base64".equals(encoding)) { 2058 dataUrl.append(";base64"); 2059 } 2060 dataUrl.append(","); 2061 dataUrl.append(data); 2062 loadUrlImpl(dataUrl.toString()); 2063 } 2064 2065 /** 2066 * Load the given data into the WebView, using baseUrl as the base URL for 2067 * the content. The base URL is used both to resolve relative URLs and when 2068 * applying JavaScript's same origin policy. The historyUrl is used for the 2069 * history entry. 2070 * <p> 2071 * Note that content specified in this way can access local device files 2072 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2073 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2074 * <p> 2075 * If the base URL uses the data scheme, this method is equivalent to 2076 * calling {@link #loadData(String,String,String) loadData()} and the 2077 * historyUrl is ignored. 2078 * @param baseUrl URL to use as the page's base URL. If null defaults to 2079 * 'about:blank' 2080 * @param data A String of data in the given encoding. 2081 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2082 * defaults to 'text/html'. 2083 * @param encoding The encoding of the data. 2084 * @param historyUrl URL to use as the history entry, if null defaults to 2085 * 'about:blank'. 2086 */ 2087 public void loadDataWithBaseURL(String baseUrl, String data, 2088 String mimeType, String encoding, String historyUrl) { 2089 checkThread(); 2090 2091 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2092 loadDataImpl(data, mimeType, encoding); 2093 return; 2094 } 2095 switchOutDrawHistory(); 2096 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2097 arg.mBaseUrl = baseUrl; 2098 arg.mData = data; 2099 arg.mMimeType = mimeType; 2100 arg.mEncoding = encoding; 2101 arg.mHistoryUrl = historyUrl; 2102 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2103 clearHelpers(); 2104 } 2105 2106 /** 2107 * Saves the current view as a web archive. 2108 * 2109 * @param filename The filename where the archive should be placed. 2110 */ 2111 public void saveWebArchive(String filename) { 2112 checkThread(); 2113 saveWebArchiveImpl(filename, false, null); 2114 } 2115 2116 /* package */ static class SaveWebArchiveMessage { 2117 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2118 mBasename = basename; 2119 mAutoname = autoname; 2120 mCallback = callback; 2121 } 2122 2123 /* package */ final String mBasename; 2124 /* package */ final boolean mAutoname; 2125 /* package */ final ValueCallback<String> mCallback; 2126 /* package */ String mResultFile; 2127 } 2128 2129 /** 2130 * Saves the current view as a web archive. 2131 * 2132 * @param basename The filename where the archive should be placed. 2133 * @param autoname If false, takes basename to be a file. If true, basename 2134 * is assumed to be a directory in which a filename will be 2135 * chosen according to the url of the current page. 2136 * @param callback Called after the web archive has been saved. The 2137 * parameter for onReceiveValue will either be the filename 2138 * under which the file was saved, or null if saving the 2139 * file failed. 2140 */ 2141 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2142 checkThread(); 2143 saveWebArchiveImpl(basename, autoname, callback); 2144 } 2145 2146 private void saveWebArchiveImpl(String basename, boolean autoname, 2147 ValueCallback<String> callback) { 2148 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2149 new SaveWebArchiveMessage(basename, autoname, callback)); 2150 } 2151 2152 /** 2153 * Stop the current load. 2154 */ 2155 public void stopLoading() { 2156 checkThread(); 2157 // TODO: should we clear all the messages in the queue before sending 2158 // STOP_LOADING? 2159 switchOutDrawHistory(); 2160 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2161 } 2162 2163 /** 2164 * Reload the current url. 2165 */ 2166 public void reload() { 2167 checkThread(); 2168 clearHelpers(); 2169 switchOutDrawHistory(); 2170 mWebViewCore.sendMessage(EventHub.RELOAD); 2171 } 2172 2173 /** 2174 * Return true if this WebView has a back history item. 2175 * @return True iff this WebView has a back history item. 2176 */ 2177 public boolean canGoBack() { 2178 checkThread(); 2179 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2180 synchronized (l) { 2181 if (l.getClearPending()) { 2182 return false; 2183 } else { 2184 return l.getCurrentIndex() > 0; 2185 } 2186 } 2187 } 2188 2189 /** 2190 * Go back in the history of this WebView. 2191 */ 2192 public void goBack() { 2193 checkThread(); 2194 goBackOrForwardImpl(-1); 2195 } 2196 2197 /** 2198 * Return true if this WebView has a forward history item. 2199 * @return True iff this Webview has a forward history item. 2200 */ 2201 public boolean canGoForward() { 2202 checkThread(); 2203 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2204 synchronized (l) { 2205 if (l.getClearPending()) { 2206 return false; 2207 } else { 2208 return l.getCurrentIndex() < l.getSize() - 1; 2209 } 2210 } 2211 } 2212 2213 /** 2214 * Go forward in the history of this WebView. 2215 */ 2216 public void goForward() { 2217 checkThread(); 2218 goBackOrForwardImpl(1); 2219 } 2220 2221 /** 2222 * Return true if the page can go back or forward the given 2223 * number of steps. 2224 * @param steps The negative or positive number of steps to move the 2225 * history. 2226 */ 2227 public boolean canGoBackOrForward(int steps) { 2228 checkThread(); 2229 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2230 synchronized (l) { 2231 if (l.getClearPending()) { 2232 return false; 2233 } else { 2234 int newIndex = l.getCurrentIndex() + steps; 2235 return newIndex >= 0 && newIndex < l.getSize(); 2236 } 2237 } 2238 } 2239 2240 /** 2241 * Go to the history item that is the number of steps away from 2242 * the current item. Steps is negative if backward and positive 2243 * if forward. 2244 * @param steps The number of steps to take back or forward in the back 2245 * forward list. 2246 */ 2247 public void goBackOrForward(int steps) { 2248 checkThread(); 2249 goBackOrForwardImpl(steps); 2250 } 2251 2252 private void goBackOrForwardImpl(int steps) { 2253 goBackOrForward(steps, false); 2254 } 2255 2256 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2257 if (steps != 0) { 2258 clearHelpers(); 2259 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2260 ignoreSnapshot ? 1 : 0); 2261 } 2262 } 2263 2264 /** 2265 * Returns true if private browsing is enabled in this WebView. 2266 */ 2267 public boolean isPrivateBrowsingEnabled() { 2268 checkThread(); 2269 return getSettings().isPrivateBrowsingEnabled(); 2270 } 2271 2272 private void startPrivateBrowsing() { 2273 getSettings().setPrivateBrowsingEnabled(true); 2274 } 2275 2276 private boolean extendScroll(int y) { 2277 int finalY = mScroller.getFinalY(); 2278 int newY = pinLocY(finalY + y); 2279 if (newY == finalY) return false; 2280 mScroller.setFinalY(newY); 2281 mScroller.extendDuration(computeDuration(0, y)); 2282 return true; 2283 } 2284 2285 /** 2286 * Scroll the contents of the view up by half the view size 2287 * @param top true to jump to the top of the page 2288 * @return true if the page was scrolled 2289 */ 2290 public boolean pageUp(boolean top) { 2291 checkThread(); 2292 if (mNativeClass == 0) { 2293 return false; 2294 } 2295 nativeClearCursor(); // start next trackball movement from page edge 2296 if (top) { 2297 // go to the top of the document 2298 return pinScrollTo(mScrollX, 0, true, 0); 2299 } 2300 // Page up 2301 int h = getHeight(); 2302 int y; 2303 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2304 y = -h + PAGE_SCROLL_OVERLAP; 2305 } else { 2306 y = -h / 2; 2307 } 2308 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2309 : extendScroll(y); 2310 } 2311 2312 /** 2313 * Scroll the contents of the view down by half the page size 2314 * @param bottom true to jump to bottom of page 2315 * @return true if the page was scrolled 2316 */ 2317 public boolean pageDown(boolean bottom) { 2318 checkThread(); 2319 if (mNativeClass == 0) { 2320 return false; 2321 } 2322 nativeClearCursor(); // start next trackball movement from page edge 2323 if (bottom) { 2324 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2325 } 2326 // Page down. 2327 int h = getHeight(); 2328 int y; 2329 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2330 y = h - PAGE_SCROLL_OVERLAP; 2331 } else { 2332 y = h / 2; 2333 } 2334 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2335 : extendScroll(y); 2336 } 2337 2338 /** 2339 * Clear the view so that onDraw() will draw nothing but white background, 2340 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2341 */ 2342 public void clearView() { 2343 checkThread(); 2344 mContentWidth = 0; 2345 mContentHeight = 0; 2346 setBaseLayer(0, null, false, false, false); 2347 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2348 } 2349 2350 /** 2351 * Return a new picture that captures the current display of the webview. 2352 * This is a copy of the display, and will be unaffected if the webview 2353 * later loads a different URL. 2354 * 2355 * @return a picture containing the current contents of the view. Note this 2356 * picture is of the entire document, and is not restricted to the 2357 * bounds of the view. 2358 */ 2359 public Picture capturePicture() { 2360 checkThread(); 2361 if (mNativeClass == 0) return null; 2362 Picture result = new Picture(); 2363 nativeCopyBaseContentToPicture(result); 2364 return result; 2365 } 2366 2367 /** 2368 * Return true if the browser is displaying a TextView for text input. 2369 */ 2370 private boolean inEditingMode() { 2371 return mWebTextView != null && mWebTextView.getParent() != null; 2372 } 2373 2374 /** 2375 * Remove the WebTextView. 2376 */ 2377 private void clearTextEntry() { 2378 if (inEditingMode()) { 2379 mWebTextView.remove(); 2380 } else { 2381 // The keyboard may be open with the WebView as the served view 2382 hideSoftKeyboard(); 2383 } 2384 } 2385 2386 /** 2387 * Return the current scale of the WebView 2388 * @return The current scale. 2389 */ 2390 public float getScale() { 2391 checkThread(); 2392 return mZoomManager.getScale(); 2393 } 2394 2395 // Called by JNI. Returns the scale to apply to the text selection handles 2396 /* package */ float getTextHandleScale() { 2397 float density = mContext.getResources().getDisplayMetrics().density; 2398 return density / getScale(); 2399 } 2400 2401 /** 2402 * Return the reading level scale of the WebView 2403 * @return The reading level scale. 2404 */ 2405 /*package*/ float getReadingLevelScale() { 2406 return mZoomManager.getReadingLevelScale(); 2407 } 2408 2409 /** 2410 * Set the initial scale for the WebView. 0 means default. If 2411 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2412 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2413 * WebView starts will this value as initial scale. 2414 * 2415 * @param scaleInPercent The initial scale in percent. 2416 */ 2417 public void setInitialScale(int scaleInPercent) { 2418 checkThread(); 2419 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2420 } 2421 2422 /** 2423 * Invoke the graphical zoom picker widget for this WebView. This will 2424 * result in the zoom widget appearing on the screen to control the zoom 2425 * level of this WebView. 2426 */ 2427 public void invokeZoomPicker() { 2428 checkThread(); 2429 if (!getSettings().supportZoom()) { 2430 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2431 return; 2432 } 2433 clearHelpers(); 2434 mZoomManager.invokeZoomPicker(); 2435 } 2436 2437 /** 2438 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2439 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2440 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2441 * anchor does not have a url or if it is a JavaScript url, the type will 2442 * be UNKNOWN_TYPE and the url has to be retrieved through 2443 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2444 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2445 * the "extra" field. A type of 2446 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2447 * a child node. If a phone number is found, the HitTestResult type is set 2448 * to PHONE_TYPE and the phone number is set in the "extra" field of 2449 * HitTestResult. If a map address is found, the HitTestResult type is set 2450 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2451 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2452 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2453 * HitTestResult type is set to UNKNOWN_TYPE. 2454 */ 2455 public HitTestResult getHitTestResult() { 2456 checkThread(); 2457 return hitTestResult(mInitialHitTestResult); 2458 } 2459 2460 private HitTestResult hitTestResult(HitTestResult fallback) { 2461 if (mNativeClass == 0) { 2462 return null; 2463 } 2464 2465 HitTestResult result = new HitTestResult(); 2466 if (nativeHasCursorNode()) { 2467 if (nativeCursorIsTextInput()) { 2468 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2469 } else { 2470 String text = nativeCursorText(); 2471 if (text != null) { 2472 if (text.startsWith(SCHEME_TEL)) { 2473 result.setType(HitTestResult.PHONE_TYPE); 2474 result.setExtra(text.substring(SCHEME_TEL.length())); 2475 } else if (text.startsWith(SCHEME_MAILTO)) { 2476 result.setType(HitTestResult.EMAIL_TYPE); 2477 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2478 } else if (text.startsWith(SCHEME_GEO)) { 2479 result.setType(HitTestResult.GEO_TYPE); 2480 result.setExtra(URLDecoder.decode(text 2481 .substring(SCHEME_GEO.length()))); 2482 } else if (nativeCursorIsAnchor()) { 2483 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2484 result.setExtra(text); 2485 } 2486 } 2487 } 2488 } else if (fallback != null) { 2489 /* If webkit causes a rebuild while the long press is in progress, 2490 * the cursor node may be reset, even if it is still around. This 2491 * uses the cursor node saved when the touch began. Since the 2492 * nativeImageURI below only changes the result if it is successful, 2493 * this uses the data beneath the touch if available or the original 2494 * tap data otherwise. 2495 */ 2496 Log.v(LOGTAG, "hitTestResult use fallback"); 2497 result = fallback; 2498 } 2499 int type = result.getType(); 2500 if (type == HitTestResult.UNKNOWN_TYPE 2501 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2502 // Now check to see if it is an image. 2503 int contentX = viewToContentX(mLastTouchX + mScrollX); 2504 int contentY = viewToContentY(mLastTouchY + mScrollY); 2505 String text = nativeImageURI(contentX, contentY); 2506 if (text != null) { 2507 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2508 HitTestResult.IMAGE_TYPE : 2509 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2510 result.setExtra(text); 2511 } 2512 } 2513 return result; 2514 } 2515 2516 // Called by JNI when the DOM has changed the focus. Clear the focus so 2517 // that new keys will go to the newly focused field 2518 private void domChangedFocus() { 2519 if (inEditingMode()) { 2520 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2521 } 2522 } 2523 /** 2524 * Request the anchor or image element URL at the last tapped point. 2525 * If hrefMsg is null, this method returns immediately and does not 2526 * dispatch hrefMsg to its target. If the tapped point hits an image, 2527 * an anchor, or an image in an anchor, the message associates 2528 * strings in named keys in its data. The value paired with the key 2529 * may be an empty string. 2530 * 2531 * @param hrefMsg This message will be dispatched with the result of the 2532 * request. The message data contains three keys: 2533 * - "url" returns the anchor's href attribute. 2534 * - "title" returns the anchor's text. 2535 * - "src" returns the image's src attribute. 2536 */ 2537 public void requestFocusNodeHref(Message hrefMsg) { 2538 checkThread(); 2539 if (hrefMsg == null) { 2540 return; 2541 } 2542 int contentX = viewToContentX(mLastTouchX + mScrollX); 2543 int contentY = viewToContentY(mLastTouchY + mScrollY); 2544 if (nativeHasCursorNode()) { 2545 Rect cursorBounds = nativeGetCursorRingBounds(); 2546 if (!cursorBounds.contains(contentX, contentY)) { 2547 int slop = viewToContentDimension(mNavSlop); 2548 cursorBounds.inset(-slop, -slop); 2549 if (cursorBounds.contains(contentX, contentY)) { 2550 contentX = (int) cursorBounds.centerX(); 2551 contentY = (int) cursorBounds.centerY(); 2552 } 2553 } 2554 } 2555 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2556 contentX, contentY, hrefMsg); 2557 } 2558 2559 /** 2560 * Request the url of the image last touched by the user. msg will be sent 2561 * to its target with a String representing the url as its object. 2562 * 2563 * @param msg This message will be dispatched with the result of the request 2564 * as the data member with "url" as key. The result can be null. 2565 */ 2566 public void requestImageRef(Message msg) { 2567 checkThread(); 2568 if (0 == mNativeClass) return; // client isn't initialized 2569 int contentX = viewToContentX(mLastTouchX + mScrollX); 2570 int contentY = viewToContentY(mLastTouchY + mScrollY); 2571 String ref = nativeImageURI(contentX, contentY); 2572 Bundle data = msg.getData(); 2573 data.putString("url", ref); 2574 msg.setData(data); 2575 msg.sendToTarget(); 2576 } 2577 2578 static int pinLoc(int x, int viewMax, int docMax) { 2579// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2580 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2581 // pin the short document to the top/left of the screen 2582 x = 0; 2583// Log.d(LOGTAG, "--- center " + x); 2584 } else if (x < 0) { 2585 x = 0; 2586// Log.d(LOGTAG, "--- zero"); 2587 } else if (x + viewMax > docMax) { 2588 x = docMax - viewMax; 2589// Log.d(LOGTAG, "--- pin " + x); 2590 } 2591 return x; 2592 } 2593 2594 // Expects x in view coordinates 2595 int pinLocX(int x) { 2596 if (mInOverScrollMode) return x; 2597 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2598 } 2599 2600 // Expects y in view coordinates 2601 int pinLocY(int y) { 2602 if (mInOverScrollMode) return y; 2603 return pinLoc(y, getViewHeightWithTitle(), 2604 computeRealVerticalScrollRange() + getTitleHeight()); 2605 } 2606 2607 /** 2608 * A title bar which is embedded in this WebView, and scrolls along with it 2609 * vertically, but not horizontally. 2610 */ 2611 private View mTitleBar; 2612 2613 /** 2614 * the title bar rendering gravity 2615 */ 2616 private int mTitleGravity; 2617 2618 /** 2619 * Add or remove a title bar to be embedded into the WebView, and scroll 2620 * along with it vertically, while remaining in view horizontally. Pass 2621 * null to remove the title bar from the WebView, and return to drawing 2622 * the WebView normally without translating to account for the title bar. 2623 * @hide 2624 */ 2625 public void setEmbeddedTitleBar(View v) { 2626 if (mTitleBar == v) return; 2627 if (mTitleBar != null) { 2628 removeView(mTitleBar); 2629 } 2630 if (null != v) { 2631 addView(v, new AbsoluteLayout.LayoutParams( 2632 ViewGroup.LayoutParams.MATCH_PARENT, 2633 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2634 } 2635 mTitleBar = v; 2636 } 2637 2638 /** 2639 * Set where to render the embedded title bar 2640 * NO_GRAVITY at the top of the page 2641 * TOP at the top of the screen 2642 * @hide 2643 */ 2644 public void setTitleBarGravity(int gravity) { 2645 mTitleGravity = gravity; 2646 // force refresh 2647 invalidate(); 2648 } 2649 2650 /** 2651 * Given a distance in view space, convert it to content space. Note: this 2652 * does not reflect translation, just scaling, so this should not be called 2653 * with coordinates, but should be called for dimensions like width or 2654 * height. 2655 */ 2656 private int viewToContentDimension(int d) { 2657 return Math.round(d * mZoomManager.getInvScale()); 2658 } 2659 2660 /** 2661 * Given an x coordinate in view space, convert it to content space. Also 2662 * may be used for absolute heights (such as for the WebTextView's 2663 * textSize, which is unaffected by the height of the title bar). 2664 */ 2665 /*package*/ int viewToContentX(int x) { 2666 return viewToContentDimension(x); 2667 } 2668 2669 /** 2670 * Given a y coordinate in view space, convert it to content space. 2671 * Takes into account the height of the title bar if there is one 2672 * embedded into the WebView. 2673 */ 2674 /*package*/ int viewToContentY(int y) { 2675 return viewToContentDimension(y - getTitleHeight()); 2676 } 2677 2678 /** 2679 * Given a x coordinate in view space, convert it to content space. 2680 * Returns the result as a float. 2681 */ 2682 private float viewToContentXf(int x) { 2683 return x * mZoomManager.getInvScale(); 2684 } 2685 2686 /** 2687 * Given a y coordinate in view space, convert it to content space. 2688 * Takes into account the height of the title bar if there is one 2689 * embedded into the WebView. Returns the result as a float. 2690 */ 2691 private float viewToContentYf(int y) { 2692 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2693 } 2694 2695 /** 2696 * Given a distance in content space, convert it to view space. Note: this 2697 * does not reflect translation, just scaling, so this should not be called 2698 * with coordinates, but should be called for dimensions like width or 2699 * height. 2700 */ 2701 /*package*/ int contentToViewDimension(int d) { 2702 return Math.round(d * mZoomManager.getScale()); 2703 } 2704 2705 /** 2706 * Given an x coordinate in content space, convert it to view 2707 * space. 2708 */ 2709 /*package*/ int contentToViewX(int x) { 2710 return contentToViewDimension(x); 2711 } 2712 2713 /** 2714 * Given a y coordinate in content space, convert it to view 2715 * space. Takes into account the height of the title bar. 2716 */ 2717 /*package*/ int contentToViewY(int y) { 2718 return contentToViewDimension(y) + getTitleHeight(); 2719 } 2720 2721 private Rect contentToViewRect(Rect x) { 2722 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2723 contentToViewX(x.right), contentToViewY(x.bottom)); 2724 } 2725 2726 /* To invalidate a rectangle in content coordinates, we need to transform 2727 the rect into view coordinates, so we can then call invalidate(...). 2728 2729 Normally, we would just call contentToView[XY](...), which eventually 2730 calls Math.round(coordinate * mActualScale). However, for invalidates, 2731 we need to account for the slop that occurs with antialiasing. To 2732 address that, we are a little more liberal in the size of the rect that 2733 we invalidate. 2734 2735 This liberal calculation calls floor() for the top/left, and ceil() for 2736 the bottom/right coordinates. This catches the possible extra pixels of 2737 antialiasing that we might have missed with just round(). 2738 */ 2739 2740 // Called by JNI to invalidate the View, given rectangle coordinates in 2741 // content space 2742 private void viewInvalidate(int l, int t, int r, int b) { 2743 final float scale = mZoomManager.getScale(); 2744 final int dy = getTitleHeight(); 2745 invalidate((int)Math.floor(l * scale), 2746 (int)Math.floor(t * scale) + dy, 2747 (int)Math.ceil(r * scale), 2748 (int)Math.ceil(b * scale) + dy); 2749 } 2750 2751 // Called by JNI to invalidate the View after a delay, given rectangle 2752 // coordinates in content space 2753 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2754 final float scale = mZoomManager.getScale(); 2755 final int dy = getTitleHeight(); 2756 postInvalidateDelayed(delay, 2757 (int)Math.floor(l * scale), 2758 (int)Math.floor(t * scale) + dy, 2759 (int)Math.ceil(r * scale), 2760 (int)Math.ceil(b * scale) + dy); 2761 } 2762 2763 private void invalidateContentRect(Rect r) { 2764 viewInvalidate(r.left, r.top, r.right, r.bottom); 2765 } 2766 2767 // stop the scroll animation, and don't let a subsequent fling add 2768 // to the existing velocity 2769 private void abortAnimation() { 2770 mScroller.abortAnimation(); 2771 mLastVelocity = 0; 2772 } 2773 2774 /* call from webcoreview.draw(), so we're still executing in the UI thread 2775 */ 2776 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2777 2778 // premature data from webkit, ignore 2779 if ((w | h) == 0) { 2780 return; 2781 } 2782 2783 // don't abort a scroll animation if we didn't change anything 2784 if (mContentWidth != w || mContentHeight != h) { 2785 // record new dimensions 2786 mContentWidth = w; 2787 mContentHeight = h; 2788 // If history Picture is drawn, don't update scroll. They will be 2789 // updated when we get out of that mode. 2790 if (!mDrawHistory) { 2791 // repin our scroll, taking into account the new content size 2792 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2793 if (!mScroller.isFinished()) { 2794 // We are in the middle of a scroll. Repin the final scroll 2795 // position. 2796 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2797 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2798 } 2799 } 2800 } 2801 contentSizeChanged(updateLayout); 2802 } 2803 2804 // Used to avoid sending many visible rect messages. 2805 private Rect mLastVisibleRectSent; 2806 private Rect mLastGlobalRect; 2807 2808 Rect sendOurVisibleRect() { 2809 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2810 Rect rect = new Rect(); 2811 calcOurContentVisibleRect(rect); 2812 // Rect.equals() checks for null input. 2813 if (!rect.equals(mLastVisibleRectSent)) { 2814 if (!mBlockWebkitViewMessages) { 2815 Point pos = new Point(rect.left, rect.top); 2816 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2817 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2818 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2819 } 2820 mLastVisibleRectSent = rect; 2821 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2822 } 2823 Rect globalRect = new Rect(); 2824 if (getGlobalVisibleRect(globalRect) 2825 && !globalRect.equals(mLastGlobalRect)) { 2826 if (DebugFlags.WEB_VIEW) { 2827 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2828 + globalRect.top + ",r=" + globalRect.right + ",b=" 2829 + globalRect.bottom); 2830 } 2831 // TODO: the global offset is only used by windowRect() 2832 // in ChromeClientAndroid ; other clients such as touch 2833 // and mouse events could return view + screen relative points. 2834 if (!mBlockWebkitViewMessages) { 2835 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2836 } 2837 mLastGlobalRect = globalRect; 2838 } 2839 return rect; 2840 } 2841 2842 // Sets r to be the visible rectangle of our webview in view coordinates 2843 private void calcOurVisibleRect(Rect r) { 2844 Point p = new Point(); 2845 getGlobalVisibleRect(r, p); 2846 r.offset(-p.x, -p.y); 2847 } 2848 2849 // Sets r to be our visible rectangle in content coordinates 2850 private void calcOurContentVisibleRect(Rect r) { 2851 calcOurVisibleRect(r); 2852 r.left = viewToContentX(r.left); 2853 // viewToContentY will remove the total height of the title bar. Add 2854 // the visible height back in to account for the fact that if the title 2855 // bar is partially visible, the part of the visible rect which is 2856 // displaying our content is displaced by that amount. 2857 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2858 r.right = viewToContentX(r.right); 2859 r.bottom = viewToContentY(r.bottom); 2860 } 2861 2862 // Sets r to be our visible rectangle in content coordinates. We use this 2863 // method on the native side to compute the position of the fixed layers. 2864 // Uses floating coordinates (necessary to correctly place elements when 2865 // the scale factor is not 1) 2866 private void calcOurContentVisibleRectF(RectF r) { 2867 Rect ri = new Rect(0,0,0,0); 2868 calcOurVisibleRect(ri); 2869 r.left = viewToContentXf(ri.left); 2870 // viewToContentY will remove the total height of the title bar. Add 2871 // the visible height back in to account for the fact that if the title 2872 // bar is partially visible, the part of the visible rect which is 2873 // displaying our content is displaced by that amount. 2874 r.top = viewToContentYf(ri.top + getVisibleTitleHeightImpl()); 2875 r.right = viewToContentXf(ri.right); 2876 r.bottom = viewToContentYf(ri.bottom); 2877 } 2878 2879 static class ViewSizeData { 2880 int mWidth; 2881 int mHeight; 2882 float mHeightWidthRatio; 2883 int mActualViewHeight; 2884 int mTextWrapWidth; 2885 int mAnchorX; 2886 int mAnchorY; 2887 float mScale; 2888 boolean mIgnoreHeight; 2889 } 2890 2891 /** 2892 * Compute unzoomed width and height, and if they differ from the last 2893 * values we sent, send them to webkit (to be used as new viewport) 2894 * 2895 * @param force ensures that the message is sent to webkit even if the width 2896 * or height has not changed since the last message 2897 * 2898 * @return true if new values were sent 2899 */ 2900 boolean sendViewSizeZoom(boolean force) { 2901 if (mBlockWebkitViewMessages) return false; 2902 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2903 2904 int viewWidth = getViewWidth(); 2905 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2906 // This height could be fixed and be different from actual visible height. 2907 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2908 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2909 // Make the ratio more accurate than (newHeight / newWidth), since the 2910 // latter both are calculated and rounded. 2911 float heightWidthRatio = (float) viewHeight / viewWidth; 2912 /* 2913 * Because the native side may have already done a layout before the 2914 * View system was able to measure us, we have to send a height of 0 to 2915 * remove excess whitespace when we grow our width. This will trigger a 2916 * layout and a change in content size. This content size change will 2917 * mean that contentSizeChanged will either call this method directly or 2918 * indirectly from onSizeChanged. 2919 */ 2920 if (newWidth > mLastWidthSent && mWrapContent) { 2921 newHeight = 0; 2922 heightWidthRatio = 0; 2923 } 2924 // Actual visible content height. 2925 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2926 // Avoid sending another message if the dimensions have not changed. 2927 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2928 actualViewHeight != mLastActualHeightSent) { 2929 ViewSizeData data = new ViewSizeData(); 2930 data.mWidth = newWidth; 2931 data.mHeight = newHeight; 2932 data.mHeightWidthRatio = heightWidthRatio; 2933 data.mActualViewHeight = actualViewHeight; 2934 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2935 data.mScale = mZoomManager.getScale(); 2936 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2937 && !mHeightCanMeasure; 2938 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2939 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2940 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2941 mLastWidthSent = newWidth; 2942 mLastHeightSent = newHeight; 2943 mLastActualHeightSent = actualViewHeight; 2944 mZoomManager.clearDocumentAnchor(); 2945 return true; 2946 } 2947 return false; 2948 } 2949 2950 private int computeRealHorizontalScrollRange() { 2951 if (mDrawHistory) { 2952 return mHistoryWidth; 2953 } else { 2954 // to avoid rounding error caused unnecessary scrollbar, use floor 2955 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2956 } 2957 } 2958 2959 @Override 2960 protected int computeHorizontalScrollRange() { 2961 int range = computeRealHorizontalScrollRange(); 2962 2963 // Adjust reported range if overscrolled to compress the scroll bars 2964 final int scrollX = mScrollX; 2965 final int overscrollRight = computeMaxScrollX(); 2966 if (scrollX < 0) { 2967 range -= scrollX; 2968 } else if (scrollX > overscrollRight) { 2969 range += scrollX - overscrollRight; 2970 } 2971 2972 return range; 2973 } 2974 2975 @Override 2976 protected int computeHorizontalScrollOffset() { 2977 return Math.max(mScrollX, 0); 2978 } 2979 2980 private int computeRealVerticalScrollRange() { 2981 if (mDrawHistory) { 2982 return mHistoryHeight; 2983 } else { 2984 // to avoid rounding error caused unnecessary scrollbar, use floor 2985 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2986 } 2987 } 2988 2989 @Override 2990 protected int computeVerticalScrollRange() { 2991 int range = computeRealVerticalScrollRange(); 2992 2993 // Adjust reported range if overscrolled to compress the scroll bars 2994 final int scrollY = mScrollY; 2995 final int overscrollBottom = computeMaxScrollY(); 2996 if (scrollY < 0) { 2997 range -= scrollY; 2998 } else if (scrollY > overscrollBottom) { 2999 range += scrollY - overscrollBottom; 3000 } 3001 3002 return range; 3003 } 3004 3005 @Override 3006 protected int computeVerticalScrollOffset() { 3007 return Math.max(mScrollY - getTitleHeight(), 0); 3008 } 3009 3010 @Override 3011 protected int computeVerticalScrollExtent() { 3012 return getViewHeight(); 3013 } 3014 3015 /** @hide */ 3016 @Override 3017 protected void onDrawVerticalScrollBar(Canvas canvas, 3018 Drawable scrollBar, 3019 int l, int t, int r, int b) { 3020 if (mScrollY < 0) { 3021 t -= mScrollY; 3022 } 3023 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3024 scrollBar.draw(canvas); 3025 } 3026 3027 @Override 3028 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3029 boolean clampedY) { 3030 // Special-case layer scrolling so that we do not trigger normal scroll 3031 // updating. 3032 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3033 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 3034 mScrollingLayerRect.left = scrollX; 3035 mScrollingLayerRect.top = scrollY; 3036 invalidate(); 3037 return; 3038 } 3039 mInOverScrollMode = false; 3040 int maxX = computeMaxScrollX(); 3041 int maxY = computeMaxScrollY(); 3042 if (maxX == 0) { 3043 // do not over scroll x if the page just fits the screen 3044 scrollX = pinLocX(scrollX); 3045 } else if (scrollX < 0 || scrollX > maxX) { 3046 mInOverScrollMode = true; 3047 } 3048 if (scrollY < 0 || scrollY > maxY) { 3049 mInOverScrollMode = true; 3050 } 3051 3052 int oldX = mScrollX; 3053 int oldY = mScrollY; 3054 3055 super.scrollTo(scrollX, scrollY); 3056 3057 if (mOverScrollGlow != null) { 3058 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3059 } 3060 } 3061 3062 /** 3063 * Get the url for the current page. This is not always the same as the url 3064 * passed to WebViewClient.onPageStarted because although the load for 3065 * that url has begun, the current page may not have changed. 3066 * @return The url for the current page. 3067 */ 3068 public String getUrl() { 3069 checkThread(); 3070 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3071 return h != null ? h.getUrl() : null; 3072 } 3073 3074 /** 3075 * Get the original url for the current page. This is not always the same 3076 * as the url passed to WebViewClient.onPageStarted because although the 3077 * load for that url has begun, the current page may not have changed. 3078 * Also, there may have been redirects resulting in a different url to that 3079 * originally requested. 3080 * @return The url that was originally requested for the current page. 3081 */ 3082 public String getOriginalUrl() { 3083 checkThread(); 3084 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3085 return h != null ? h.getOriginalUrl() : null; 3086 } 3087 3088 /** 3089 * Get the title for the current page. This is the title of the current page 3090 * until WebViewClient.onReceivedTitle is called. 3091 * @return The title for the current page. 3092 */ 3093 public String getTitle() { 3094 checkThread(); 3095 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3096 return h != null ? h.getTitle() : null; 3097 } 3098 3099 /** 3100 * Get the favicon for the current page. This is the favicon of the current 3101 * page until WebViewClient.onReceivedIcon is called. 3102 * @return The favicon for the current page. 3103 */ 3104 public Bitmap getFavicon() { 3105 checkThread(); 3106 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3107 return h != null ? h.getFavicon() : null; 3108 } 3109 3110 /** 3111 * Get the touch icon url for the apple-touch-icon <link> element, or 3112 * a URL on this site's server pointing to the standard location of a 3113 * touch icon. 3114 * @hide 3115 */ 3116 public String getTouchIconUrl() { 3117 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3118 return h != null ? h.getTouchIconUrl() : null; 3119 } 3120 3121 /** 3122 * Get the progress for the current page. 3123 * @return The progress for the current page between 0 and 100. 3124 */ 3125 public int getProgress() { 3126 checkThread(); 3127 return mCallbackProxy.getProgress(); 3128 } 3129 3130 /** 3131 * @return the height of the HTML content. 3132 */ 3133 public int getContentHeight() { 3134 checkThread(); 3135 return mContentHeight; 3136 } 3137 3138 /** 3139 * @return the width of the HTML content. 3140 * @hide 3141 */ 3142 public int getContentWidth() { 3143 return mContentWidth; 3144 } 3145 3146 /** 3147 * @hide 3148 */ 3149 public int getPageBackgroundColor() { 3150 return nativeGetBackgroundColor(); 3151 } 3152 3153 /** 3154 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3155 * is a global requests, not restricted to just this webview. This can be 3156 * useful if the application has been paused. 3157 */ 3158 public void pauseTimers() { 3159 checkThread(); 3160 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3161 } 3162 3163 /** 3164 * Resume all layout, parsing, and JavaScript timers for all webviews. 3165 * This will resume dispatching all timers. 3166 */ 3167 public void resumeTimers() { 3168 checkThread(); 3169 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3170 } 3171 3172 /** 3173 * Call this to pause any extra processing associated with this WebView and 3174 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3175 * is taken offscreen, this could be called to reduce unnecessary CPU or 3176 * network traffic. When the WebView is again "active", call onResume(). 3177 * 3178 * Note that this differs from pauseTimers(), which affects all WebViews. 3179 */ 3180 public void onPause() { 3181 checkThread(); 3182 if (!mIsPaused) { 3183 mIsPaused = true; 3184 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3185 // We want to pause the current playing video when switching out 3186 // from the current WebView/tab. 3187 if (mHTML5VideoViewProxy != null) { 3188 mHTML5VideoViewProxy.pauseAndDispatch(); 3189 } 3190 } 3191 } 3192 3193 /** 3194 * Call this to resume a WebView after a previous call to onPause(). 3195 */ 3196 public void onResume() { 3197 checkThread(); 3198 if (mIsPaused) { 3199 mIsPaused = false; 3200 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3201 } 3202 } 3203 3204 /** 3205 * Returns true if the view is paused, meaning onPause() was called. Calling 3206 * onResume() sets the paused state back to false. 3207 * @hide 3208 */ 3209 public boolean isPaused() { 3210 return mIsPaused; 3211 } 3212 3213 /** 3214 * Call this to inform the view that memory is low so that it can 3215 * free any available memory. 3216 */ 3217 public void freeMemory() { 3218 checkThread(); 3219 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3220 } 3221 3222 /** 3223 * Clear the resource cache. Note that the cache is per-application, so 3224 * this will clear the cache for all WebViews used. 3225 * 3226 * @param includeDiskFiles If false, only the RAM cache is cleared. 3227 */ 3228 public void clearCache(boolean includeDiskFiles) { 3229 checkThread(); 3230 // Note: this really needs to be a static method as it clears cache for all 3231 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3232 // we can't make this static. 3233 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3234 includeDiskFiles ? 1 : 0, 0); 3235 } 3236 3237 /** 3238 * Make sure that clearing the form data removes the adapter from the 3239 * currently focused textfield if there is one. 3240 */ 3241 public void clearFormData() { 3242 checkThread(); 3243 if (inEditingMode()) { 3244 AutoCompleteAdapter adapter = null; 3245 mWebTextView.setAdapterCustom(adapter); 3246 } 3247 } 3248 3249 /** 3250 * Tell the WebView to clear its internal back/forward list. 3251 */ 3252 public void clearHistory() { 3253 checkThread(); 3254 mCallbackProxy.getBackForwardList().setClearPending(); 3255 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3256 } 3257 3258 /** 3259 * Clear the SSL preferences table stored in response to proceeding with SSL 3260 * certificate errors. 3261 */ 3262 public void clearSslPreferences() { 3263 checkThread(); 3264 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3265 } 3266 3267 /** 3268 * Return the WebBackForwardList for this WebView. This contains the 3269 * back/forward list for use in querying each item in the history stack. 3270 * This is a copy of the private WebBackForwardList so it contains only a 3271 * snapshot of the current state. Multiple calls to this method may return 3272 * different objects. The object returned from this method will not be 3273 * updated to reflect any new state. 3274 */ 3275 public WebBackForwardList copyBackForwardList() { 3276 checkThread(); 3277 return mCallbackProxy.getBackForwardList().clone(); 3278 } 3279 3280 /* 3281 * Highlight and scroll to the next occurance of String in findAll. 3282 * Wraps the page infinitely, and scrolls. Must be called after 3283 * calling findAll. 3284 * 3285 * @param forward Direction to search. 3286 */ 3287 public void findNext(boolean forward) { 3288 checkThread(); 3289 if (0 == mNativeClass) return; // client isn't initialized 3290 nativeFindNext(forward); 3291 } 3292 3293 /* 3294 * Find all instances of find on the page and highlight them. 3295 * @param find String to find. 3296 * @return int The number of occurances of the String "find" 3297 * that were found. 3298 */ 3299 public int findAll(String find) { 3300 checkThread(); 3301 if (0 == mNativeClass) return 0; // client isn't initialized 3302 int result = find != null ? nativeFindAll(find.toLowerCase(), 3303 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3304 invalidate(); 3305 mLastFind = find; 3306 return result; 3307 } 3308 3309 /** 3310 * Start an ActionMode for finding text in this WebView. Only works if this 3311 * WebView is attached to the view system. 3312 * @param text If non-null, will be the initial text to search for. 3313 * Otherwise, the last String searched for in this WebView will 3314 * be used to start. 3315 * @param showIme If true, show the IME, assuming the user will begin typing. 3316 * If false and text is non-null, perform a find all. 3317 * @return boolean True if the find dialog is shown, false otherwise. 3318 */ 3319 public boolean showFindDialog(String text, boolean showIme) { 3320 checkThread(); 3321 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3322 if (getParent() == null || startActionMode(callback) == null) { 3323 // Could not start the action mode, so end Find on page 3324 return false; 3325 } 3326 mFindCallback = callback; 3327 setFindIsUp(true); 3328 mFindCallback.setWebView(this); 3329 if (showIme) { 3330 mFindCallback.showSoftInput(); 3331 } else if (text != null) { 3332 mFindCallback.setText(text); 3333 mFindCallback.findAll(); 3334 return true; 3335 } 3336 if (text == null) { 3337 text = mLastFind; 3338 } 3339 if (text != null) { 3340 mFindCallback.setText(text); 3341 } 3342 return true; 3343 } 3344 3345 /** 3346 * Keep track of the find callback so that we can remove its titlebar if 3347 * necessary. 3348 */ 3349 private FindActionModeCallback mFindCallback; 3350 3351 /** 3352 * Toggle whether the find dialog is showing, for both native and Java. 3353 */ 3354 private void setFindIsUp(boolean isUp) { 3355 mFindIsUp = isUp; 3356 if (0 == mNativeClass) return; // client isn't initialized 3357 nativeSetFindIsUp(isUp); 3358 } 3359 3360 /** 3361 * Return the index of the currently highlighted match. 3362 */ 3363 int findIndex() { 3364 if (0 == mNativeClass) return -1; 3365 return nativeFindIndex(); 3366 } 3367 3368 // Used to know whether the find dialog is open. Affects whether 3369 // or not we draw the highlights for matches. 3370 private boolean mFindIsUp; 3371 3372 // Keep track of the last string sent, so we can search again when find is 3373 // reopened. 3374 private String mLastFind; 3375 3376 /** 3377 * Return the first substring consisting of the address of a physical 3378 * location. Currently, only addresses in the United States are detected, 3379 * and consist of: 3380 * - a house number 3381 * - a street name 3382 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3383 * - a city name 3384 * - a state or territory, either spelled out or two-letter abbr. 3385 * - an optional 5 digit or 9 digit zip code. 3386 * 3387 * All names must be correctly capitalized, and the zip code, if present, 3388 * must be valid for the state. The street type must be a standard USPS 3389 * spelling or abbreviation. The state or territory must also be spelled 3390 * or abbreviated using USPS standards. The house number may not exceed 3391 * five digits. 3392 * @param addr The string to search for addresses. 3393 * 3394 * @return the address, or if no address is found, return null. 3395 */ 3396 public static String findAddress(String addr) { 3397 checkThread(); 3398 return findAddress(addr, false); 3399 } 3400 3401 /** 3402 * @hide 3403 * Return the first substring consisting of the address of a physical 3404 * location. Currently, only addresses in the United States are detected, 3405 * and consist of: 3406 * - a house number 3407 * - a street name 3408 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3409 * - a city name 3410 * - a state or territory, either spelled out or two-letter abbr. 3411 * - an optional 5 digit or 9 digit zip code. 3412 * 3413 * Names are optionally capitalized, and the zip code, if present, 3414 * must be valid for the state. The street type must be a standard USPS 3415 * spelling or abbreviation. The state or territory must also be spelled 3416 * or abbreviated using USPS standards. The house number may not exceed 3417 * five digits. 3418 * @param addr The string to search for addresses. 3419 * @param caseInsensitive addr Set to true to make search ignore case. 3420 * 3421 * @return the address, or if no address is found, return null. 3422 */ 3423 public static String findAddress(String addr, boolean caseInsensitive) { 3424 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3425 } 3426 3427 /* 3428 * Clear the highlighting surrounding text matches created by findAll. 3429 */ 3430 public void clearMatches() { 3431 checkThread(); 3432 if (mNativeClass == 0) 3433 return; 3434 nativeSetFindIsEmpty(); 3435 invalidate(); 3436 } 3437 3438 /** 3439 * Called when the find ActionMode ends. 3440 */ 3441 void notifyFindDialogDismissed() { 3442 mFindCallback = null; 3443 if (mWebViewCore == null) { 3444 return; 3445 } 3446 clearMatches(); 3447 setFindIsUp(false); 3448 // Now that the dialog has been removed, ensure that we scroll to a 3449 // location that is not beyond the end of the page. 3450 pinScrollTo(mScrollX, mScrollY, false, 0); 3451 invalidate(); 3452 } 3453 3454 /** 3455 * Query the document to see if it contains any image references. The 3456 * message object will be dispatched with arg1 being set to 1 if images 3457 * were found and 0 if the document does not reference any images. 3458 * @param response The message that will be dispatched with the result. 3459 */ 3460 public void documentHasImages(Message response) { 3461 checkThread(); 3462 if (response == null) { 3463 return; 3464 } 3465 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3466 } 3467 3468 /** 3469 * Request the scroller to abort any ongoing animation 3470 * 3471 * @hide 3472 */ 3473 public void stopScroll() { 3474 mScroller.forceFinished(true); 3475 mLastVelocity = 0; 3476 } 3477 3478 @Override 3479 public void computeScroll() { 3480 if (mScroller.computeScrollOffset()) { 3481 int oldX = mScrollX; 3482 int oldY = mScrollY; 3483 int x = mScroller.getCurrX(); 3484 int y = mScroller.getCurrY(); 3485 invalidate(); // So we draw again 3486 3487 if (!mScroller.isFinished()) { 3488 int rangeX = computeMaxScrollX(); 3489 int rangeY = computeMaxScrollY(); 3490 int overflingDistance = mOverflingDistance; 3491 3492 // Use the layer's scroll data if needed. 3493 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3494 oldX = mScrollingLayerRect.left; 3495 oldY = mScrollingLayerRect.top; 3496 rangeX = mScrollingLayerRect.right; 3497 rangeY = mScrollingLayerRect.bottom; 3498 // No overscrolling for layers. 3499 overflingDistance = 0; 3500 } 3501 3502 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3503 rangeX, rangeY, 3504 overflingDistance, overflingDistance, false); 3505 3506 if (mOverScrollGlow != null) { 3507 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3508 } 3509 } else { 3510 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3511 mScrollX = x; 3512 mScrollY = y; 3513 } else { 3514 // Update the layer position instead of WebView. 3515 nativeScrollLayer(mScrollingLayer, x, y); 3516 mScrollingLayerRect.left = x; 3517 mScrollingLayerRect.top = y; 3518 } 3519 abortAnimation(); 3520 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3521 nativeSetIsScrolling(false); 3522 if (!mBlockWebkitViewMessages) { 3523 WebViewCore.resumePriority(); 3524 if (!mSelectingText) { 3525 WebViewCore.resumeUpdatePicture(mWebViewCore); 3526 } 3527 } 3528 if (oldX != mScrollX || oldY != mScrollY) { 3529 sendOurVisibleRect(); 3530 } 3531 } 3532 } else { 3533 super.computeScroll(); 3534 } 3535 } 3536 3537 private static int computeDuration(int dx, int dy) { 3538 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3539 int duration = distance * 1000 / STD_SPEED; 3540 return Math.min(duration, MAX_DURATION); 3541 } 3542 3543 // helper to pin the scrollBy parameters (already in view coordinates) 3544 // returns true if the scroll was changed 3545 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3546 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3547 } 3548 // helper to pin the scrollTo parameters (already in view coordinates) 3549 // returns true if the scroll was changed 3550 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3551 x = pinLocX(x); 3552 y = pinLocY(y); 3553 int dx = x - mScrollX; 3554 int dy = y - mScrollY; 3555 3556 if ((dx | dy) == 0) { 3557 return false; 3558 } 3559 abortAnimation(); 3560 if (animate) { 3561 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3562 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3563 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3564 awakenScrollBars(mScroller.getDuration()); 3565 invalidate(); 3566 } else { 3567 scrollTo(x, y); 3568 } 3569 return true; 3570 } 3571 3572 // Scale from content to view coordinates, and pin. 3573 // Also called by jni webview.cpp 3574 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3575 if (mDrawHistory) { 3576 // disallow WebView to change the scroll position as History Picture 3577 // is used in the view system. 3578 // TODO: as we switchOutDrawHistory when trackball or navigation 3579 // keys are hit, this should be safe. Right? 3580 return false; 3581 } 3582 cx = contentToViewDimension(cx); 3583 cy = contentToViewDimension(cy); 3584 if (mHeightCanMeasure) { 3585 // move our visible rect according to scroll request 3586 if (cy != 0) { 3587 Rect tempRect = new Rect(); 3588 calcOurVisibleRect(tempRect); 3589 tempRect.offset(cx, cy); 3590 requestRectangleOnScreen(tempRect); 3591 } 3592 // FIXME: We scroll horizontally no matter what because currently 3593 // ScrollView and ListView will not scroll horizontally. 3594 // FIXME: Why do we only scroll horizontally if there is no 3595 // vertical scroll? 3596// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3597 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3598 } else { 3599 return pinScrollBy(cx, cy, animate, 0); 3600 } 3601 } 3602 3603 /** 3604 * Called by CallbackProxy when the page starts loading. 3605 * @param url The URL of the page which has started loading. 3606 */ 3607 /* package */ void onPageStarted(String url) { 3608 // every time we start a new page, we want to reset the 3609 // WebView certificate: if the new site is secure, we 3610 // will reload it and get a new certificate set; 3611 // if the new site is not secure, the certificate must be 3612 // null, and that will be the case 3613 setCertificate(null); 3614 3615 // reset the flag since we set to true in if need after 3616 // loading is see onPageFinished(Url) 3617 mAccessibilityScriptInjected = false; 3618 } 3619 3620 /** 3621 * Called by CallbackProxy when the page finishes loading. 3622 * @param url The URL of the page which has finished loading. 3623 */ 3624 /* package */ void onPageFinished(String url) { 3625 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3626 // If the user is now on a different page, or has scrolled the page 3627 // past the point where the title bar is offscreen, ignore the 3628 // scroll request. 3629 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3630 && mScrollX == 0 && mScrollY == 0) { 3631 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3632 SLIDE_TITLE_DURATION); 3633 } 3634 mPageThatNeedsToSlideTitleBarOffScreen = null; 3635 } 3636 mZoomManager.onPageFinished(url); 3637 injectAccessibilityForUrl(url); 3638 } 3639 3640 /** 3641 * This method injects accessibility in the loaded document if accessibility 3642 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3643 * If no URL specific script is found or JavaScript is disabled we fallback to 3644 * the default {@link AccessibilityInjector} implementation. 3645 * </p> 3646 * If the URL has the "axs" paramter set to 1 it has already done the 3647 * script injection so we do nothing. If the parameter is set to 0 3648 * the URL opts out accessibility script injection so we fall back to 3649 * the default {@link AccessibilityInjector}. 3650 * </p> 3651 * Note: If the user has not opted-in the accessibility script injection no scripts 3652 * are injected rather the default {@link AccessibilityInjector} implementation 3653 * is used. 3654 * 3655 * @param url The URL loaded by this {@link WebView}. 3656 */ 3657 private void injectAccessibilityForUrl(String url) { 3658 if (mWebViewCore == null) { 3659 return; 3660 } 3661 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3662 3663 if (!accessibilityManager.isEnabled()) { 3664 // it is possible that accessibility was turned off between reloads 3665 ensureAccessibilityScriptInjectorInstance(false); 3666 return; 3667 } 3668 3669 if (!getSettings().getJavaScriptEnabled()) { 3670 // no JS so we fallback to the basic buil-in support 3671 ensureAccessibilityScriptInjectorInstance(true); 3672 return; 3673 } 3674 3675 // check the URL "axs" parameter to choose appropriate action 3676 int axsParameterValue = getAxsUrlParameterValue(url); 3677 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3678 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3679 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3680 if (onDeviceScriptInjectionEnabled) { 3681 ensureAccessibilityScriptInjectorInstance(false); 3682 // neither script injected nor script injection opted out => we inject 3683 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3684 // TODO: Set this flag after successfull script injection. Maybe upon injection 3685 // the chooser should update the meta tag and we check it to declare success 3686 mAccessibilityScriptInjected = true; 3687 } else { 3688 // injection disabled so we fallback to the basic built-in support 3689 ensureAccessibilityScriptInjectorInstance(true); 3690 } 3691 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3692 // injection opted out so we fallback to the basic buil-in support 3693 ensureAccessibilityScriptInjectorInstance(true); 3694 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3695 ensureAccessibilityScriptInjectorInstance(false); 3696 // the URL provides accessibility but we still need to add our generic script 3697 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3698 } else { 3699 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3700 } 3701 } 3702 3703 /** 3704 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3705 * 3706 * @param present True to ensure an insance, false to ensure no instance. 3707 */ 3708 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3709 if (present) { 3710 if (mAccessibilityInjector == null) { 3711 mAccessibilityInjector = new AccessibilityInjector(this); 3712 } 3713 } else { 3714 mAccessibilityInjector = null; 3715 } 3716 } 3717 3718 /** 3719 * Gets the "axs" URL parameter value. 3720 * 3721 * @param url A url to fetch the paramter from. 3722 * @return The parameter value if such, -1 otherwise. 3723 */ 3724 private int getAxsUrlParameterValue(String url) { 3725 if (mMatchAxsUrlParameterPattern == null) { 3726 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3727 } 3728 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3729 if (matcher.find()) { 3730 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3731 return Integer.parseInt(keyValuePair.split("=")[1]); 3732 } 3733 return -1; 3734 } 3735 3736 /** 3737 * The URL of a page that sent a message to scroll the title bar off screen. 3738 * 3739 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3740 * title bar off the screen. Sometimes, the scroll position is set before 3741 * the page finishes loading. Rather than scrolling while the page is still 3742 * loading, keep track of the URL and new scroll position so we can perform 3743 * the scroll once the page finishes loading. 3744 */ 3745 private String mPageThatNeedsToSlideTitleBarOffScreen; 3746 3747 /** 3748 * The destination Y scroll position to be used when the page finishes 3749 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3750 */ 3751 private int mYDistanceToSlideTitleOffScreen; 3752 3753 // scale from content to view coordinates, and pin 3754 // return true if pin caused the final x/y different than the request cx/cy, 3755 // and a future scroll may reach the request cx/cy after our size has 3756 // changed 3757 // return false if the view scroll to the exact position as it is requested, 3758 // where negative numbers are taken to mean 0 3759 private boolean setContentScrollTo(int cx, int cy) { 3760 if (mDrawHistory) { 3761 // disallow WebView to change the scroll position as History Picture 3762 // is used in the view system. 3763 // One known case where this is called is that WebCore tries to 3764 // restore the scroll position. As history Picture already uses the 3765 // saved scroll position, it is ok to skip this. 3766 return false; 3767 } 3768 int vx; 3769 int vy; 3770 if ((cx | cy) == 0) { 3771 // If the page is being scrolled to (0,0), do not add in the title 3772 // bar's height, and simply scroll to (0,0). (The only other work 3773 // in contentToView_ is to multiply, so this would not change 0.) 3774 vx = 0; 3775 vy = 0; 3776 } else { 3777 vx = contentToViewX(cx); 3778 vy = contentToViewY(cy); 3779 } 3780// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3781// vx + " " + vy + "]"); 3782 // Some mobile sites attempt to scroll the title bar off the page by 3783 // scrolling to (0,1). If we are at the top left corner of the 3784 // page, assume this is an attempt to scroll off the title bar, and 3785 // animate the title bar off screen slowly enough that the user can see 3786 // it. 3787 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3788 && mTitleBar != null) { 3789 // FIXME: 100 should be defined somewhere as our max progress. 3790 if (getProgress() < 100) { 3791 // Wait to scroll the title bar off screen until the page has 3792 // finished loading. Keep track of the URL and the destination 3793 // Y position 3794 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3795 mYDistanceToSlideTitleOffScreen = vy; 3796 } else { 3797 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3798 } 3799 // Since we are animating, we have not yet reached the desired 3800 // scroll position. Do not return true to request another attempt 3801 return false; 3802 } 3803 pinScrollTo(vx, vy, false, 0); 3804 // If the request was to scroll to a negative coordinate, treat it as if 3805 // it was a request to scroll to 0 3806 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3807 return true; 3808 } else { 3809 return false; 3810 } 3811 } 3812 3813 // scale from content to view coordinates, and pin 3814 private void spawnContentScrollTo(int cx, int cy) { 3815 if (mDrawHistory) { 3816 // disallow WebView to change the scroll position as History Picture 3817 // is used in the view system. 3818 return; 3819 } 3820 int vx = contentToViewX(cx); 3821 int vy = contentToViewY(cy); 3822 pinScrollTo(vx, vy, true, 0); 3823 } 3824 3825 /** 3826 * These are from webkit, and are in content coordinate system (unzoomed) 3827 */ 3828 private void contentSizeChanged(boolean updateLayout) { 3829 // suppress 0,0 since we usually see real dimensions soon after 3830 // this avoids drawing the prev content in a funny place. If we find a 3831 // way to consolidate these notifications, this check may become 3832 // obsolete 3833 if ((mContentWidth | mContentHeight) == 0) { 3834 return; 3835 } 3836 3837 if (mHeightCanMeasure) { 3838 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3839 || updateLayout) { 3840 requestLayout(); 3841 } 3842 } else if (mWidthCanMeasure) { 3843 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3844 || updateLayout) { 3845 requestLayout(); 3846 } 3847 } else { 3848 // If we don't request a layout, try to send our view size to the 3849 // native side to ensure that WebCore has the correct dimensions. 3850 sendViewSizeZoom(false); 3851 } 3852 } 3853 3854 /** 3855 * Set the WebViewClient that will receive various notifications and 3856 * requests. This will replace the current handler. 3857 * @param client An implementation of WebViewClient. 3858 */ 3859 public void setWebViewClient(WebViewClient client) { 3860 checkThread(); 3861 mCallbackProxy.setWebViewClient(client); 3862 } 3863 3864 /** 3865 * Gets the WebViewClient 3866 * @return the current WebViewClient instance. 3867 * 3868 *@hide pending API council approval. 3869 */ 3870 public WebViewClient getWebViewClient() { 3871 return mCallbackProxy.getWebViewClient(); 3872 } 3873 3874 /** 3875 * Register the interface to be used when content can not be handled by 3876 * the rendering engine, and should be downloaded instead. This will replace 3877 * the current handler. 3878 * @param listener An implementation of DownloadListener. 3879 */ 3880 public void setDownloadListener(DownloadListener listener) { 3881 checkThread(); 3882 mCallbackProxy.setDownloadListener(listener); 3883 } 3884 3885 /** 3886 * Set the chrome handler. This is an implementation of WebChromeClient for 3887 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3888 * This will replace the current handler. 3889 * @param client An implementation of WebChromeClient. 3890 */ 3891 public void setWebChromeClient(WebChromeClient client) { 3892 checkThread(); 3893 mCallbackProxy.setWebChromeClient(client); 3894 } 3895 3896 /** 3897 * Gets the chrome handler. 3898 * @return the current WebChromeClient instance. 3899 * 3900 * @hide API council approval. 3901 */ 3902 public WebChromeClient getWebChromeClient() { 3903 return mCallbackProxy.getWebChromeClient(); 3904 } 3905 3906 /** 3907 * Set the back/forward list client. This is an implementation of 3908 * WebBackForwardListClient for handling new items and changes in the 3909 * history index. 3910 * @param client An implementation of WebBackForwardListClient. 3911 * {@hide} 3912 */ 3913 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3914 mCallbackProxy.setWebBackForwardListClient(client); 3915 } 3916 3917 /** 3918 * Gets the WebBackForwardListClient. 3919 * {@hide} 3920 */ 3921 public WebBackForwardListClient getWebBackForwardListClient() { 3922 return mCallbackProxy.getWebBackForwardListClient(); 3923 } 3924 3925 /** 3926 * Set the Picture listener. This is an interface used to receive 3927 * notifications of a new Picture. 3928 * @param listener An implementation of WebView.PictureListener. 3929 * @deprecated This method is now obsolete. 3930 */ 3931 @Deprecated 3932 public void setPictureListener(PictureListener listener) { 3933 checkThread(); 3934 mPictureListener = listener; 3935 } 3936 3937 /** 3938 * {@hide} 3939 */ 3940 /* FIXME: Debug only! Remove for SDK! */ 3941 public void externalRepresentation(Message callback) { 3942 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3943 } 3944 3945 /** 3946 * {@hide} 3947 */ 3948 /* FIXME: Debug only! Remove for SDK! */ 3949 public void documentAsText(Message callback) { 3950 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3951 } 3952 3953 /** 3954 * Use this function to bind an object to JavaScript so that the 3955 * methods can be accessed from JavaScript. 3956 * <p><strong>IMPORTANT:</strong> 3957 * <ul> 3958 * <li> Using addJavascriptInterface() allows JavaScript to control your 3959 * application. This can be a very useful feature or a dangerous security 3960 * issue. When the HTML in the WebView is untrustworthy (for example, part 3961 * or all of the HTML is provided by some person or process), then an 3962 * attacker could inject HTML that will execute your code and possibly any 3963 * code of the attacker's choosing.<br> 3964 * Do not use addJavascriptInterface() unless all of the HTML in this 3965 * WebView was written by you.</li> 3966 * <li> The Java object that is bound runs in another thread and not in 3967 * the thread that it was constructed in.</li> 3968 * </ul></p> 3969 * @param obj The class instance to bind to JavaScript, null instances are 3970 * ignored. 3971 * @param interfaceName The name to used to expose the instance in 3972 * JavaScript. 3973 */ 3974 public void addJavascriptInterface(Object obj, String interfaceName) { 3975 checkThread(); 3976 if (obj == null) { 3977 return; 3978 } 3979 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3980 arg.mObject = obj; 3981 arg.mInterfaceName = interfaceName; 3982 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3983 } 3984 3985 /** 3986 * Removes a previously added JavaScript interface with the given name. 3987 * @param interfaceName The name of the interface to remove. 3988 */ 3989 public void removeJavascriptInterface(String interfaceName) { 3990 checkThread(); 3991 if (mWebViewCore != null) { 3992 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3993 arg.mInterfaceName = interfaceName; 3994 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3995 } 3996 } 3997 3998 /** 3999 * Return the WebSettings object used to control the settings for this 4000 * WebView. 4001 * @return A WebSettings object that can be used to control this WebView's 4002 * settings. 4003 */ 4004 public WebSettings getSettings() { 4005 checkThread(); 4006 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4007 } 4008 4009 /** 4010 * Return the list of currently loaded plugins. 4011 * @return The list of currently loaded plugins. 4012 * 4013 * @hide 4014 * @deprecated This was used for Gears, which has been deprecated. 4015 */ 4016 @Deprecated 4017 public static synchronized PluginList getPluginList() { 4018 checkThread(); 4019 return new PluginList(); 4020 } 4021 4022 /** 4023 * @hide 4024 * @deprecated This was used for Gears, which has been deprecated. 4025 */ 4026 @Deprecated 4027 public void refreshPlugins(boolean reloadOpenPages) { 4028 checkThread(); 4029 } 4030 4031 //------------------------------------------------------------------------- 4032 // Override View methods 4033 //------------------------------------------------------------------------- 4034 4035 @Override 4036 protected void finalize() throws Throwable { 4037 try { 4038 if (mNativeClass != 0) { 4039 mPrivateHandler.post(new Runnable() { 4040 @Override 4041 public void run() { 4042 destroy(); 4043 } 4044 }); 4045 } 4046 } finally { 4047 super.finalize(); 4048 } 4049 } 4050 4051 @Override 4052 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4053 if (child == mTitleBar) { 4054 // When drawing the title bar, move it horizontally to always show 4055 // at the top of the WebView. 4056 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4057 int newTop = 0; 4058 if (mTitleGravity == Gravity.NO_GRAVITY) { 4059 newTop = Math.min(0, mScrollY); 4060 } else if (mTitleGravity == Gravity.TOP) { 4061 newTop = mScrollY; 4062 } 4063 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4064 mTitleBar.setTop(newTop); 4065 } 4066 return super.drawChild(canvas, child, drawingTime); 4067 } 4068 4069 private void drawContent(Canvas canvas, boolean drawRings) { 4070 // Update the buttons in the picture, so when we draw the picture 4071 // to the screen, they are in the correct state. 4072 // Tell the native side if user is a) touching the screen, 4073 // b) pressing the trackball down, or c) pressing the enter key 4074 // If the cursor is on a button, we need to draw it in the pressed 4075 // state. 4076 // If mNativeClass is 0, we should not reach here, so we do not 4077 // need to check it again. 4078 boolean pressed = (mTouchMode == TOUCH_SHORTPRESS_START_MODE 4079 || mTouchMode == TOUCH_INIT_MODE 4080 || mTouchMode == TOUCH_SHORTPRESS_MODE); 4081 recordButtons(canvas, 4082 hasFocus() && hasWindowFocus(), (pressed && !USE_WEBKIT_RINGS) 4083 || mTrackballDown || mGotCenterDown, false); 4084 drawCoreAndCursorRing(canvas, mBackgroundColor, 4085 mDrawCursorRing && drawRings); 4086 } 4087 4088 /** 4089 * Draw the background when beyond bounds 4090 * @param canvas Canvas to draw into 4091 */ 4092 private void drawOverScrollBackground(Canvas canvas) { 4093 if (mOverScrollBackground == null) { 4094 mOverScrollBackground = new Paint(); 4095 Bitmap bm = BitmapFactory.decodeResource( 4096 mContext.getResources(), 4097 com.android.internal.R.drawable.status_bar_background); 4098 mOverScrollBackground.setShader(new BitmapShader(bm, 4099 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4100 mOverScrollBorder = new Paint(); 4101 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4102 mOverScrollBorder.setStrokeWidth(0); 4103 mOverScrollBorder.setColor(0xffbbbbbb); 4104 } 4105 4106 int top = 0; 4107 int right = computeRealHorizontalScrollRange(); 4108 int bottom = top + computeRealVerticalScrollRange(); 4109 // first draw the background and anchor to the top of the view 4110 canvas.save(); 4111 canvas.translate(mScrollX, mScrollY); 4112 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4113 - mScrollY, Region.Op.DIFFERENCE); 4114 canvas.drawPaint(mOverScrollBackground); 4115 canvas.restore(); 4116 // then draw the border 4117 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4118 // next clip the region for the content 4119 canvas.clipRect(0, top, right, bottom); 4120 } 4121 4122 @Override 4123 protected void onDraw(Canvas canvas) { 4124 // if mNativeClass is 0, the WebView is either destroyed or not 4125 // initialized. In either case, just draw the background color and return 4126 if (mNativeClass == 0) { 4127 canvas.drawColor(mBackgroundColor); 4128 return; 4129 } 4130 4131 // if both mContentWidth and mContentHeight are 0, it means there is no 4132 // valid Picture passed to WebView yet. This can happen when WebView 4133 // just starts. Draw the background and return. 4134 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4135 canvas.drawColor(mBackgroundColor); 4136 return; 4137 } 4138 4139 if (canvas.isHardwareAccelerated()) { 4140 mZoomManager.setHardwareAccelerated(); 4141 } 4142 4143 int saveCount = canvas.save(); 4144 if (mInOverScrollMode && !getSettings() 4145 .getUseWebViewBackgroundForOverscrollBackground()) { 4146 drawOverScrollBackground(canvas); 4147 } 4148 if (mTitleBar != null) { 4149 canvas.translate(0, getTitleHeight()); 4150 } 4151 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4152 && (mTouchMode == TOUCH_INIT_MODE 4153 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4154 || mTouchMode == TOUCH_SHORTPRESS_MODE 4155 || mTouchMode == TOUCH_DONE_MODE); 4156 boolean drawNativeRings = !drawJavaRings; 4157 if (USE_WEBKIT_RINGS) { 4158 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4159 } 4160 drawContent(canvas, drawNativeRings); 4161 canvas.restoreToCount(saveCount); 4162 4163 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4164 invalidate(); 4165 } 4166 mWebViewCore.signalRepaintDone(); 4167 4168 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4169 invalidate(); 4170 } 4171 4172 // paint the highlight in the end 4173 if (drawJavaRings) { 4174 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4175 if (delay < ViewConfiguration.getTapTimeout()) { 4176 Rect r = mTouchHighlightRegion.getBounds(); 4177 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4178 } else { 4179 if (mTouchHightlightPaint == null) { 4180 mTouchHightlightPaint = new Paint(); 4181 mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR); 4182 } 4183 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4184 Rect r = new Rect(); 4185 while (iter.next(r)) { 4186 canvas.drawRect(r, mTouchHightlightPaint); 4187 } 4188 } 4189 } 4190 if (DEBUG_TOUCH_HIGHLIGHT) { 4191 if (getSettings().getNavDump()) { 4192 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4193 if (mTouchCrossHairColor == null) { 4194 mTouchCrossHairColor = new Paint(); 4195 mTouchCrossHairColor.setColor(Color.RED); 4196 } 4197 canvas.drawLine(mTouchHighlightX - mNavSlop, 4198 mTouchHighlightY - mNavSlop, mTouchHighlightX 4199 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4200 + 1, mTouchCrossHairColor); 4201 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4202 mTouchHighlightY - mNavSlop, mTouchHighlightX 4203 - mNavSlop, 4204 mTouchHighlightY + mNavSlop + 1, 4205 mTouchCrossHairColor); 4206 } 4207 } 4208 } 4209 } 4210 4211 private void removeTouchHighlight() { 4212 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4213 mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS); 4214 setTouchHighlightRects(null); 4215 } 4216 4217 @Override 4218 public void setLayoutParams(ViewGroup.LayoutParams params) { 4219 if (params.height == LayoutParams.WRAP_CONTENT) { 4220 mWrapContent = true; 4221 } 4222 super.setLayoutParams(params); 4223 } 4224 4225 @Override 4226 public boolean performLongClick() { 4227 // performLongClick() is the result of a delayed message. If we switch 4228 // to windows overview, the WebView will be temporarily removed from the 4229 // view system. In that case, do nothing. 4230 if (getParent() == null) return false; 4231 4232 // A multi-finger gesture can look like a long press; make sure we don't take 4233 // long press actions if we're scaling. 4234 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4235 if (detector != null && detector.isInProgress()) { 4236 return false; 4237 } 4238 4239 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4240 // Send the click so that the textfield is in focus 4241 centerKeyPressOnTextField(); 4242 rebuildWebTextView(); 4243 } else { 4244 clearTextEntry(); 4245 } 4246 if (inEditingMode()) { 4247 // Since we just called rebuildWebTextView, the layout is not set 4248 // properly. Update it so it can correctly find the word to select. 4249 mWebTextView.ensureLayout(); 4250 // Provide a touch down event to WebTextView, which will allow it 4251 // to store the location to use in performLongClick. 4252 AbsoluteLayout.LayoutParams params 4253 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4254 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4255 mLastTouchTime, MotionEvent.ACTION_DOWN, 4256 mLastTouchX - params.x + mScrollX, 4257 mLastTouchY - params.y + mScrollY, 0); 4258 mWebTextView.dispatchTouchEvent(fake); 4259 return mWebTextView.performLongClick(); 4260 } 4261 if (mSelectingText) return false; // long click does nothing on selection 4262 /* if long click brings up a context menu, the super function 4263 * returns true and we're done. Otherwise, nothing happened when 4264 * the user clicked. */ 4265 if (super.performLongClick()) { 4266 return true; 4267 } 4268 /* In the case where the application hasn't already handled the long 4269 * click action, look for a word under the click. If one is found, 4270 * animate the text selection into view. 4271 * FIXME: no animation code yet */ 4272 final boolean isSelecting = selectText(); 4273 if (isSelecting) { 4274 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4275 } 4276 return isSelecting; 4277 } 4278 4279 /** 4280 * Select the word at the last click point. 4281 * 4282 * @hide pending API council approval 4283 */ 4284 public boolean selectText() { 4285 int x = viewToContentX(mLastTouchX + mScrollX); 4286 int y = viewToContentY(mLastTouchY + mScrollY); 4287 return selectText(x, y); 4288 } 4289 4290 /** 4291 * Select the word at the indicated content coordinates. 4292 */ 4293 boolean selectText(int x, int y) { 4294 if (!setUpSelect(true, x, y)) { 4295 return false; 4296 } 4297 nativeSetExtendSelection(); 4298 mDrawSelectionPointer = false; 4299 mTouchMode = TOUCH_DRAG_MODE; 4300 return true; 4301 } 4302 4303 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4304 4305 @Override 4306 protected void onConfigurationChanged(Configuration newConfig) { 4307 if (mSelectingText && mOrientation != newConfig.orientation) { 4308 selectionDone(); 4309 } 4310 mOrientation = newConfig.orientation; 4311 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4312 } 4313 4314 /** 4315 * Keep track of the Callback so we can end its ActionMode or remove its 4316 * titlebar. 4317 */ 4318 private SelectActionModeCallback mSelectCallback; 4319 4320 // These values are possible options for didUpdateWebTextViewDimensions. 4321 private static final int FULLY_ON_SCREEN = 0; 4322 private static final int INTERSECTS_SCREEN = 1; 4323 private static final int ANYWHERE = 2; 4324 4325 /** 4326 * Check to see if the focused textfield/textarea is still on screen. If it 4327 * is, update the the dimensions and location of WebTextView. Otherwise, 4328 * remove the WebTextView. Should be called when the zoom level changes. 4329 * @param intersection How to determine whether the textfield/textarea is 4330 * still on screen. 4331 * @return boolean True if the textfield/textarea is still on screen and the 4332 * dimensions/location of WebTextView have been updated. 4333 */ 4334 private boolean didUpdateWebTextViewDimensions(int intersection) { 4335 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4336 Rect vBox = contentToViewRect(contentBounds); 4337 Rect visibleRect = new Rect(); 4338 calcOurVisibleRect(visibleRect); 4339 // If the textfield is on screen, place the WebTextView in 4340 // its new place, accounting for our new scroll/zoom values, 4341 // and adjust its textsize. 4342 boolean onScreen; 4343 switch (intersection) { 4344 case FULLY_ON_SCREEN: 4345 onScreen = visibleRect.contains(vBox); 4346 break; 4347 case INTERSECTS_SCREEN: 4348 onScreen = Rect.intersects(visibleRect, vBox); 4349 break; 4350 case ANYWHERE: 4351 onScreen = true; 4352 break; 4353 default: 4354 throw new AssertionError( 4355 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4356 } 4357 if (onScreen) { 4358 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4359 vBox.height()); 4360 mWebTextView.updateTextSize(); 4361 updateWebTextViewPadding(); 4362 return true; 4363 } else { 4364 // The textfield is now off screen. The user probably 4365 // was not zooming to see the textfield better. Remove 4366 // the WebTextView. If the user types a key, and the 4367 // textfield is still in focus, we will reconstruct 4368 // the WebTextView and scroll it back on screen. 4369 mWebTextView.remove(); 4370 return false; 4371 } 4372 } 4373 4374 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4375 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4376 if (mNativeClass == 0) 4377 return; 4378 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4379 isPictureAfterFirstLayout, registerPageSwapCallback); 4380 if (mHTML5VideoViewProxy != null) { 4381 mHTML5VideoViewProxy.setBaseLayer(layer); 4382 } 4383 } 4384 4385 int getBaseLayer() { 4386 if (mNativeClass == 0) { 4387 return 0; 4388 } 4389 return nativeGetBaseLayer(); 4390 } 4391 4392 private void onZoomAnimationStart() { 4393 // If it is in password mode, turn it off so it does not draw misplaced. 4394 if (inEditingMode()) { 4395 mWebTextView.setVisibility(INVISIBLE); 4396 } 4397 } 4398 4399 private void onZoomAnimationEnd() { 4400 // adjust the edit text view if needed 4401 if (inEditingMode() 4402 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4403 // If it is a password field, start drawing the WebTextView once 4404 // again. 4405 mWebTextView.setVisibility(VISIBLE); 4406 } 4407 } 4408 4409 void onFixedLengthZoomAnimationStart() { 4410 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4411 onZoomAnimationStart(); 4412 } 4413 4414 void onFixedLengthZoomAnimationEnd() { 4415 if (!mBlockWebkitViewMessages && !mSelectingText) { 4416 WebViewCore.resumeUpdatePicture(mWebViewCore); 4417 } 4418 onZoomAnimationEnd(); 4419 } 4420 4421 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4422 Paint.DITHER_FLAG | 4423 Paint.SUBPIXEL_TEXT_FLAG; 4424 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4425 Paint.DITHER_FLAG; 4426 4427 private final DrawFilter mZoomFilter = 4428 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4429 // If we need to trade better quality for speed, set mScrollFilter to null 4430 private final DrawFilter mScrollFilter = 4431 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4432 4433 private void drawCoreAndCursorRing(Canvas canvas, int color, 4434 boolean drawCursorRing) { 4435 if (mDrawHistory) { 4436 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4437 canvas.drawPicture(mHistoryPicture); 4438 return; 4439 } 4440 if (mNativeClass == 0) return; 4441 4442 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4443 boolean animateScroll = ((!mScroller.isFinished() 4444 || mVelocityTracker != null) 4445 && (mTouchMode != TOUCH_DRAG_MODE || 4446 mHeldMotionless != MOTIONLESS_TRUE)) 4447 || mDeferTouchMode == TOUCH_DRAG_MODE; 4448 if (mTouchMode == TOUCH_DRAG_MODE) { 4449 if (mHeldMotionless == MOTIONLESS_PENDING) { 4450 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4451 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4452 mHeldMotionless = MOTIONLESS_FALSE; 4453 } 4454 if (mHeldMotionless == MOTIONLESS_FALSE) { 4455 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4456 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4457 mHeldMotionless = MOTIONLESS_PENDING; 4458 } 4459 } 4460 int saveCount = canvas.save(); 4461 if (animateZoom) { 4462 mZoomManager.animateZoom(canvas); 4463 } else if (!canvas.isHardwareAccelerated()) { 4464 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4465 } 4466 4467 boolean UIAnimationsRunning = false; 4468 // Currently for each draw we compute the animation values; 4469 // We may in the future decide to do that independently. 4470 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4471 UIAnimationsRunning = true; 4472 // If we have unfinished (or unstarted) animations, 4473 // we ask for a repaint. We only need to do this in software 4474 // rendering (with hardware rendering we already have a different 4475 // method of requesting a repaint) 4476 if (!canvas.isHardwareAccelerated()) 4477 invalidate(); 4478 } 4479 4480 // decide which adornments to draw 4481 int extras = DRAW_EXTRAS_NONE; 4482 if (mFindIsUp) { 4483 extras = DRAW_EXTRAS_FIND; 4484 } else if (mSelectingText && !USE_JAVA_TEXT_SELECTION) { 4485 extras = DRAW_EXTRAS_SELECTION; 4486 nativeSetSelectionPointer(mDrawSelectionPointer, 4487 mZoomManager.getInvScale(), 4488 mSelectX, mSelectY - getTitleHeight()); 4489 } else if (drawCursorRing) { 4490 extras = DRAW_EXTRAS_CURSOR_RING; 4491 } 4492 if (DebugFlags.WEB_VIEW) { 4493 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4494 + " mSelectingText=" + mSelectingText 4495 + " nativePageShouldHandleShiftAndArrows()=" 4496 + nativePageShouldHandleShiftAndArrows() 4497 + " animateZoom=" + animateZoom 4498 + " extras=" + extras); 4499 } 4500 4501 if (canvas.isHardwareAccelerated()) { 4502 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4503 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4504 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4505 4506 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4507 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4508 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4509 } 4510 4511 } else { 4512 DrawFilter df = null; 4513 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4514 df = mZoomFilter; 4515 } else if (animateScroll) { 4516 df = mScrollFilter; 4517 } 4518 canvas.setDrawFilter(df); 4519 // XXX: Revisit splitting content. Right now it causes a 4520 // synchronization problem with layers. 4521 int content = nativeDraw(canvas, color, extras, false); 4522 canvas.setDrawFilter(null); 4523 if (!mBlockWebkitViewMessages && content != 0) { 4524 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4525 } 4526 } 4527 4528 canvas.restoreToCount(saveCount); 4529 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4530 drawTextSelectionHandles(canvas); 4531 } 4532 4533 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4534 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4535 mTouchMode = TOUCH_SHORTPRESS_MODE; 4536 } 4537 } 4538 if (mFocusSizeChanged) { 4539 mFocusSizeChanged = false; 4540 // If we are zooming, this will get handled above, when the zoom 4541 // finishes. We also do not need to do this unless the WebTextView 4542 // is showing. With hardware acceleration, the pageSwapCallback() 4543 // updates the WebTextView position in sync with page swapping 4544 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4545 didUpdateWebTextViewDimensions(ANYWHERE); 4546 } 4547 } 4548 } 4549 4550 private void drawTextSelectionHandles(Canvas canvas) { 4551 if (mTextSelectionPaint == null) { 4552 mTextSelectionPaint = new Paint(); 4553 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4554 } 4555 mTextSelectionRegion.setEmpty(); 4556 nativeGetTextSelectionRegion(mTextSelectionRegion); 4557 Rect r = new Rect(); 4558 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4559 int start_x = -1; 4560 int start_y = -1; 4561 int end_x = -1; 4562 int end_y = -1; 4563 while (iter.next(r)) { 4564 r = new Rect( 4565 contentToViewDimension(r.left), 4566 contentToViewDimension(r.top), 4567 contentToViewDimension(r.right), 4568 contentToViewDimension(r.bottom)); 4569 // Regions are in order. First one is where selection starts, 4570 // last one is where it ends 4571 if (start_x < 0 || start_y < 0) { 4572 start_x = r.left; 4573 start_y = r.bottom; 4574 } 4575 end_x = r.right; 4576 end_y = r.bottom; 4577 canvas.drawRect(r, mTextSelectionPaint); 4578 } 4579 if (mSelectHandleLeft == null) { 4580 mSelectHandleLeft = mContext.getResources().getDrawable( 4581 com.android.internal.R.drawable.text_select_handle_left); 4582 } 4583 // Magic formula copied from TextView 4584 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4585 mSelectHandleLeft.setBounds(start_x, start_y, 4586 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4587 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4588 if (mSelectHandleRight == null) { 4589 mSelectHandleRight = mContext.getResources().getDrawable( 4590 com.android.internal.R.drawable.text_select_handle_right); 4591 } 4592 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4593 mSelectHandleRight.setBounds(end_x, end_y, 4594 end_x + mSelectHandleRight.getIntrinsicWidth(), 4595 end_y + mSelectHandleRight.getIntrinsicHeight()); 4596 mSelectHandleLeft.draw(canvas); 4597 mSelectHandleRight.draw(canvas); 4598 } 4599 4600 // draw history 4601 private boolean mDrawHistory = false; 4602 private Picture mHistoryPicture = null; 4603 private int mHistoryWidth = 0; 4604 private int mHistoryHeight = 0; 4605 4606 // Only check the flag, can be called from WebCore thread 4607 boolean drawHistory() { 4608 return mDrawHistory; 4609 } 4610 4611 int getHistoryPictureWidth() { 4612 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4613 } 4614 4615 // Should only be called in UI thread 4616 void switchOutDrawHistory() { 4617 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4618 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4619 mDrawHistory = false; 4620 mHistoryPicture = null; 4621 invalidate(); 4622 int oldScrollX = mScrollX; 4623 int oldScrollY = mScrollY; 4624 mScrollX = pinLocX(mScrollX); 4625 mScrollY = pinLocY(mScrollY); 4626 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4627 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4628 } else { 4629 sendOurVisibleRect(); 4630 } 4631 } 4632 } 4633 4634 WebViewCore.CursorData cursorData() { 4635 WebViewCore.CursorData result = cursorDataNoPosition(); 4636 Point position = nativeCursorPosition(); 4637 result.mX = position.x; 4638 result.mY = position.y; 4639 return result; 4640 } 4641 4642 WebViewCore.CursorData cursorDataNoPosition() { 4643 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4644 result.mMoveGeneration = nativeMoveGeneration(); 4645 result.mFrame = nativeCursorFramePointer(); 4646 return result; 4647 } 4648 4649 /** 4650 * Delete text from start to end in the focused textfield. If there is no 4651 * focus, or if start == end, silently fail. If start and end are out of 4652 * order, swap them. 4653 * @param start Beginning of selection to delete. 4654 * @param end End of selection to delete. 4655 */ 4656 /* package */ void deleteSelection(int start, int end) { 4657 mTextGeneration++; 4658 WebViewCore.TextSelectionData data 4659 = new WebViewCore.TextSelectionData(start, end); 4660 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4661 data); 4662 } 4663 4664 /** 4665 * Set the selection to (start, end) in the focused textfield. If start and 4666 * end are out of order, swap them. 4667 * @param start Beginning of selection. 4668 * @param end End of selection. 4669 */ 4670 /* package */ void setSelection(int start, int end) { 4671 if (mWebViewCore != null) { 4672 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4673 } 4674 } 4675 4676 @Override 4677 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4678 InputConnection connection = super.onCreateInputConnection(outAttrs); 4679 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4680 return connection; 4681 } 4682 4683 /** 4684 * Called in response to a message from webkit telling us that the soft 4685 * keyboard should be launched. 4686 */ 4687 private void displaySoftKeyboard(boolean isTextView) { 4688 InputMethodManager imm = (InputMethodManager) 4689 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4690 4691 // bring it back to the default level scale so that user can enter text 4692 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4693 if (zoom) { 4694 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4695 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4696 } 4697 if (isTextView) { 4698 rebuildWebTextView(); 4699 if (inEditingMode()) { 4700 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4701 if (zoom) { 4702 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4703 } 4704 return; 4705 } 4706 } 4707 // Used by plugins and contentEditable. 4708 // Also used if the navigation cache is out of date, and 4709 // does not recognize that a textfield is in focus. In that 4710 // case, use WebView as the targeted view. 4711 // see http://b/issue?id=2457459 4712 imm.showSoftInput(this, 0); 4713 } 4714 4715 // Called by WebKit to instruct the UI to hide the keyboard 4716 private void hideSoftKeyboard() { 4717 InputMethodManager imm = InputMethodManager.peekInstance(); 4718 if (imm != null && (imm.isActive(this) 4719 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4720 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4721 } 4722 } 4723 4724 /* 4725 * This method checks the current focus and cursor and potentially rebuilds 4726 * mWebTextView to have the appropriate properties, such as password, 4727 * multiline, and what text it contains. It also removes it if necessary. 4728 */ 4729 /* package */ void rebuildWebTextView() { 4730 // If the WebView does not have focus, do nothing until it gains focus. 4731 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4732 return; 4733 } 4734 boolean alreadyThere = inEditingMode(); 4735 // inEditingMode can only return true if mWebTextView is non-null, 4736 // so we can safely call remove() if (alreadyThere) 4737 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4738 if (alreadyThere) { 4739 mWebTextView.remove(); 4740 } 4741 return; 4742 } 4743 // At this point, we know we have found an input field, so go ahead 4744 // and create the WebTextView if necessary. 4745 if (mWebTextView == null) { 4746 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4747 // Initialize our generation number. 4748 mTextGeneration = 0; 4749 } 4750 mWebTextView.updateTextSize(); 4751 Rect visibleRect = new Rect(); 4752 calcOurContentVisibleRect(visibleRect); 4753 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4754 // should be in content coordinates. 4755 Rect bounds = nativeFocusCandidateNodeBounds(); 4756 Rect vBox = contentToViewRect(bounds); 4757 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4758 if (!Rect.intersects(bounds, visibleRect)) { 4759 revealSelection(); 4760 } 4761 String text = nativeFocusCandidateText(); 4762 int nodePointer = nativeFocusCandidatePointer(); 4763 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4764 Gravity.RIGHT : Gravity.NO_GRAVITY); 4765 // This needs to be called before setType, which may call 4766 // requestFormData, and it needs to have the correct nodePointer. 4767 mWebTextView.setNodePointer(nodePointer); 4768 mWebTextView.setType(nativeFocusCandidateType()); 4769 updateWebTextViewPadding(); 4770 if (null == text) { 4771 if (DebugFlags.WEB_VIEW) { 4772 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4773 } 4774 text = ""; 4775 } 4776 mWebTextView.setTextAndKeepSelection(text); 4777 InputMethodManager imm = InputMethodManager.peekInstance(); 4778 if (imm != null && imm.isActive(mWebTextView)) { 4779 imm.restartInput(mWebTextView); 4780 } 4781 if (isFocused()) { 4782 mWebTextView.requestFocus(); 4783 } 4784 } 4785 4786 /** 4787 * Update the padding of mWebTextView based on the native textfield/textarea 4788 */ 4789 void updateWebTextViewPadding() { 4790 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4791 if (paddingRect != null) { 4792 // Use contentToViewDimension since these are the dimensions of 4793 // the padding. 4794 mWebTextView.setPadding( 4795 contentToViewDimension(paddingRect.left), 4796 contentToViewDimension(paddingRect.top), 4797 contentToViewDimension(paddingRect.right), 4798 contentToViewDimension(paddingRect.bottom)); 4799 } 4800 } 4801 4802 /** 4803 * Tell webkit to put the cursor on screen. 4804 */ 4805 /* package */ void revealSelection() { 4806 if (mWebViewCore != null) { 4807 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4808 } 4809 } 4810 4811 /** 4812 * Called by WebTextView to find saved form data associated with the 4813 * textfield 4814 * @param name Name of the textfield. 4815 * @param nodePointer Pointer to the node of the textfield, so it can be 4816 * compared to the currently focused textfield when the data is 4817 * retrieved. 4818 * @param autoFillable true if WebKit has determined this field is part of 4819 * a form that can be auto filled. 4820 * @param autoComplete true if the attribute "autocomplete" is set to true 4821 * on the textfield. 4822 */ 4823 /* package */ void requestFormData(String name, int nodePointer, 4824 boolean autoFillable, boolean autoComplete) { 4825 if (mWebViewCore.getSettings().getSaveFormData()) { 4826 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4827 update.arg1 = nodePointer; 4828 RequestFormData updater = new RequestFormData(name, getUrl(), 4829 update, autoFillable, autoComplete); 4830 Thread t = new Thread(updater); 4831 t.start(); 4832 } 4833 } 4834 4835 /** 4836 * Pass a message to find out the <label> associated with the <input> 4837 * identified by nodePointer 4838 * @param framePointer Pointer to the frame containing the <input> node 4839 * @param nodePointer Pointer to the node for which a <label> is desired. 4840 */ 4841 /* package */ void requestLabel(int framePointer, int nodePointer) { 4842 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4843 nodePointer); 4844 } 4845 4846 /* 4847 * This class requests an Adapter for the WebTextView which shows past 4848 * entries stored in the database. It is a Runnable so that it can be done 4849 * in its own thread, without slowing down the UI. 4850 */ 4851 private class RequestFormData implements Runnable { 4852 private String mName; 4853 private String mUrl; 4854 private Message mUpdateMessage; 4855 private boolean mAutoFillable; 4856 private boolean mAutoComplete; 4857 private WebSettings mWebSettings; 4858 4859 public RequestFormData(String name, String url, Message msg, 4860 boolean autoFillable, boolean autoComplete) { 4861 mName = name; 4862 mUrl = WebTextView.urlForAutoCompleteData(url); 4863 mUpdateMessage = msg; 4864 mAutoFillable = autoFillable; 4865 mAutoComplete = autoComplete; 4866 mWebSettings = getSettings(); 4867 } 4868 4869 public void run() { 4870 ArrayList<String> pastEntries = new ArrayList<String>(); 4871 4872 if (mAutoFillable) { 4873 // Note that code inside the adapter click handler in WebTextView depends 4874 // on the AutoFill item being at the top of the drop down list. If you change 4875 // the order, make sure to do it there too! 4876 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 4877 pastEntries.add(getResources().getText( 4878 com.android.internal.R.string.autofill_this_form).toString() + 4879 " " + 4880 mAutoFillData.getPreviewString()); 4881 mWebTextView.setAutoFillProfileIsSet(true); 4882 } else { 4883 // There is no autofill profile set up yet, so add an option that 4884 // will invite the user to set their profile up. 4885 pastEntries.add(getResources().getText( 4886 com.android.internal.R.string.setup_autofill).toString()); 4887 mWebTextView.setAutoFillProfileIsSet(false); 4888 } 4889 } 4890 4891 if (mAutoComplete) { 4892 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4893 } 4894 4895 if (pastEntries.size() > 0) { 4896 AutoCompleteAdapter adapter = new 4897 AutoCompleteAdapter(mContext, pastEntries); 4898 mUpdateMessage.obj = adapter; 4899 mUpdateMessage.sendToTarget(); 4900 } 4901 } 4902 } 4903 4904 /** 4905 * Dump the display tree to "/sdcard/displayTree.txt" 4906 * 4907 * @hide debug only 4908 */ 4909 public void dumpDisplayTree() { 4910 nativeDumpDisplayTree(getUrl()); 4911 } 4912 4913 /** 4914 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4915 * "/sdcard/domTree.txt" 4916 * 4917 * @hide debug only 4918 */ 4919 public void dumpDomTree(boolean toFile) { 4920 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4921 } 4922 4923 /** 4924 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4925 * to "/sdcard/renderTree.txt" 4926 * 4927 * @hide debug only 4928 */ 4929 public void dumpRenderTree(boolean toFile) { 4930 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4931 } 4932 4933 /** 4934 * Called by DRT on UI thread, need to proxy to WebCore thread. 4935 * 4936 * @hide debug only 4937 */ 4938 public void useMockDeviceOrientation() { 4939 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4940 } 4941 4942 /** 4943 * Called by DRT on WebCore thread. 4944 * 4945 * @hide debug only 4946 */ 4947 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4948 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4949 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4950 canProvideGamma, gamma); 4951 } 4952 4953 /** 4954 * Dump the V8 counters to standard output. 4955 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4956 * true. Otherwise, this will do nothing. 4957 * 4958 * @hide debug only 4959 */ 4960 public void dumpV8Counters() { 4961 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4962 } 4963 4964 // This is used to determine long press with the center key. Does not 4965 // affect long press with the trackball/touch. 4966 private boolean mGotCenterDown = false; 4967 4968 @Override 4969 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4970 if (mBlockWebkitViewMessages) { 4971 return false; 4972 } 4973 // send complex characters to webkit for use by JS and plugins 4974 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4975 // pass the key to DOM 4976 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4977 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4978 // return true as DOM handles the key 4979 return true; 4980 } 4981 return false; 4982 } 4983 4984 private boolean isEnterActionKey(int keyCode) { 4985 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4986 || keyCode == KeyEvent.KEYCODE_ENTER 4987 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4988 } 4989 4990 @Override 4991 public boolean onKeyDown(int keyCode, KeyEvent event) { 4992 if (DebugFlags.WEB_VIEW) { 4993 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4994 + "keyCode=" + keyCode 4995 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4996 } 4997 if (mBlockWebkitViewMessages) { 4998 return false; 4999 } 5000 5001 // don't implement accelerator keys here; defer to host application 5002 if (event.isCtrlPressed()) { 5003 return false; 5004 } 5005 5006 if (mNativeClass == 0) { 5007 return false; 5008 } 5009 5010 // do this hack up front, so it always works, regardless of touch-mode 5011 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5012 mAutoRedraw = !mAutoRedraw; 5013 if (mAutoRedraw) { 5014 invalidate(); 5015 } 5016 return true; 5017 } 5018 5019 // Bubble up the key event if 5020 // 1. it is a system key; or 5021 // 2. the host application wants to handle it; 5022 if (event.isSystem() 5023 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5024 return false; 5025 } 5026 5027 // accessibility support 5028 if (accessibilityScriptInjected()) { 5029 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5030 // if an accessibility script is injected we delegate to it the key handling. 5031 // this script is a screen reader which is a fully fledged solution for blind 5032 // users to navigate in and interact with web pages. 5033 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5034 return true; 5035 } else { 5036 // Clean up if accessibility was disabled after loading the current URL. 5037 mAccessibilityScriptInjected = false; 5038 } 5039 } else if (mAccessibilityInjector != null) { 5040 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5041 if (mAccessibilityInjector.onKeyEvent(event)) { 5042 // if an accessibility injector is present (no JavaScript enabled or the site 5043 // opts out injecting our JavaScript screen reader) we let it decide whether 5044 // to act on and consume the event. 5045 return true; 5046 } 5047 } else { 5048 // Clean up if accessibility was disabled after loading the current URL. 5049 mAccessibilityInjector = null; 5050 } 5051 } 5052 5053 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5054 if (event.hasNoModifiers()) { 5055 pageUp(false); 5056 return true; 5057 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5058 pageUp(true); 5059 return true; 5060 } 5061 } 5062 5063 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5064 if (event.hasNoModifiers()) { 5065 pageDown(false); 5066 return true; 5067 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5068 pageDown(true); 5069 return true; 5070 } 5071 } 5072 5073 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5074 pageUp(true); 5075 return true; 5076 } 5077 5078 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5079 pageDown(true); 5080 return true; 5081 } 5082 5083 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5084 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5085 switchOutDrawHistory(); 5086 if (nativePageShouldHandleShiftAndArrows()) { 5087 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5088 return true; 5089 } 5090 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5091 switch (keyCode) { 5092 case KeyEvent.KEYCODE_DPAD_UP: 5093 pageUp(true); 5094 return true; 5095 case KeyEvent.KEYCODE_DPAD_DOWN: 5096 pageDown(true); 5097 return true; 5098 case KeyEvent.KEYCODE_DPAD_LEFT: 5099 nativeClearCursor(); // start next trackball movement from page edge 5100 return pinScrollTo(0, mScrollY, true, 0); 5101 case KeyEvent.KEYCODE_DPAD_RIGHT: 5102 nativeClearCursor(); // start next trackball movement from page edge 5103 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5104 } 5105 } 5106 if (mSelectingText) { 5107 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5108 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5109 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5110 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5111 int multiplier = event.getRepeatCount() + 1; 5112 moveSelection(xRate * multiplier, yRate * multiplier); 5113 return true; 5114 } 5115 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5116 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5117 return true; 5118 } 5119 // Bubble up the key event as WebView doesn't handle it 5120 return false; 5121 } 5122 5123 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5124 switchOutDrawHistory(); 5125 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5126 || nativeCursorWantsKeyEvents(); 5127 if (event.getRepeatCount() == 0) { 5128 if (mSelectingText) { 5129 return true; // discard press if copy in progress 5130 } 5131 mGotCenterDown = true; 5132 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5133 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5134 // Already checked mNativeClass, so we do not need to check it 5135 // again. 5136 recordButtons(null, hasFocus() && hasWindowFocus(), true, true); 5137 if (!wantsKeyEvents) return true; 5138 } 5139 // Bubble up the key event as WebView doesn't handle it 5140 if (!wantsKeyEvents) return false; 5141 } 5142 5143 if (getSettings().getNavDump()) { 5144 switch (keyCode) { 5145 case KeyEvent.KEYCODE_4: 5146 dumpDisplayTree(); 5147 break; 5148 case KeyEvent.KEYCODE_5: 5149 case KeyEvent.KEYCODE_6: 5150 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5151 break; 5152 case KeyEvent.KEYCODE_7: 5153 case KeyEvent.KEYCODE_8: 5154 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5155 break; 5156 case KeyEvent.KEYCODE_9: 5157 nativeInstrumentReport(); 5158 return true; 5159 } 5160 } 5161 5162 if (nativeCursorIsTextInput()) { 5163 // This message will put the node in focus, for the DOM's notion 5164 // of focus. 5165 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5166 nativeCursorNodePointer()); 5167 // This will bring up the WebTextView and put it in focus, for 5168 // our view system's notion of focus 5169 rebuildWebTextView(); 5170 // Now we need to pass the event to it 5171 if (inEditingMode()) { 5172 mWebTextView.setDefaultSelection(); 5173 return mWebTextView.dispatchKeyEvent(event); 5174 } 5175 } else if (nativeHasFocusNode()) { 5176 // In this case, the cursor is not on a text input, but the focus 5177 // might be. Check it, and if so, hand over to the WebTextView. 5178 rebuildWebTextView(); 5179 if (inEditingMode()) { 5180 mWebTextView.setDefaultSelection(); 5181 return mWebTextView.dispatchKeyEvent(event); 5182 } 5183 } 5184 5185 // TODO: should we pass all the keys to DOM or check the meta tag 5186 if (nativeCursorWantsKeyEvents() || true) { 5187 // pass the key to DOM 5188 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5189 // return true as DOM handles the key 5190 return true; 5191 } 5192 5193 // Bubble up the key event as WebView doesn't handle it 5194 return false; 5195 } 5196 5197 @Override 5198 public boolean onKeyUp(int keyCode, KeyEvent event) { 5199 if (DebugFlags.WEB_VIEW) { 5200 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5201 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5202 } 5203 if (mBlockWebkitViewMessages) { 5204 return false; 5205 } 5206 5207 if (mNativeClass == 0) { 5208 return false; 5209 } 5210 5211 // special CALL handling when cursor node's href is "tel:XXX" 5212 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5213 String text = nativeCursorText(); 5214 if (!nativeCursorIsTextInput() && text != null 5215 && text.startsWith(SCHEME_TEL)) { 5216 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5217 getContext().startActivity(intent); 5218 return true; 5219 } 5220 } 5221 5222 // Bubble up the key event if 5223 // 1. it is a system key; or 5224 // 2. the host application wants to handle it; 5225 if (event.isSystem() 5226 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5227 return false; 5228 } 5229 5230 // accessibility support 5231 if (accessibilityScriptInjected()) { 5232 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5233 // if an accessibility script is injected we delegate to it the key handling. 5234 // this script is a screen reader which is a fully fledged solution for blind 5235 // users to navigate in and interact with web pages. 5236 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5237 return true; 5238 } else { 5239 // Clean up if accessibility was disabled after loading the current URL. 5240 mAccessibilityScriptInjected = false; 5241 } 5242 } else if (mAccessibilityInjector != null) { 5243 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5244 if (mAccessibilityInjector.onKeyEvent(event)) { 5245 // if an accessibility injector is present (no JavaScript enabled or the site 5246 // opts out injecting our JavaScript screen reader) we let it decide whether to 5247 // act on and consume the event. 5248 return true; 5249 } 5250 } else { 5251 // Clean up if accessibility was disabled after loading the current URL. 5252 mAccessibilityInjector = null; 5253 } 5254 } 5255 5256 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5257 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5258 if (nativePageShouldHandleShiftAndArrows()) { 5259 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5260 return true; 5261 } 5262 // always handle the navigation keys in the UI thread 5263 // Bubble up the key event as WebView doesn't handle it 5264 return false; 5265 } 5266 5267 if (isEnterActionKey(keyCode)) { 5268 // remove the long press message first 5269 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5270 mGotCenterDown = false; 5271 5272 if (mSelectingText) { 5273 if (mExtendSelection) { 5274 copySelection(); 5275 selectionDone(); 5276 } else { 5277 mExtendSelection = true; 5278 nativeSetExtendSelection(); 5279 invalidate(); // draw the i-beam instead of the arrow 5280 } 5281 return true; // discard press if copy in progress 5282 } 5283 5284 // perform the single click 5285 Rect visibleRect = sendOurVisibleRect(); 5286 // Note that sendOurVisibleRect calls viewToContent, so the 5287 // coordinates should be in content coordinates. 5288 if (!nativeCursorIntersects(visibleRect)) { 5289 return false; 5290 } 5291 WebViewCore.CursorData data = cursorData(); 5292 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5293 playSoundEffect(SoundEffectConstants.CLICK); 5294 if (nativeCursorIsTextInput()) { 5295 rebuildWebTextView(); 5296 centerKeyPressOnTextField(); 5297 if (inEditingMode()) { 5298 mWebTextView.setDefaultSelection(); 5299 } 5300 return true; 5301 } 5302 clearTextEntry(); 5303 nativeShowCursorTimed(); 5304 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5305 return true; 5306 } 5307 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5308 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5309 nativeCursorNodePointer()); 5310 return true; 5311 } 5312 } 5313 5314 // TODO: should we pass all the keys to DOM or check the meta tag 5315 if (nativeCursorWantsKeyEvents() || true) { 5316 // pass the key to DOM 5317 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5318 // return true as DOM handles the key 5319 return true; 5320 } 5321 5322 // Bubble up the key event as WebView doesn't handle it 5323 return false; 5324 } 5325 5326 /* 5327 * Enter selecting text mode, and see if CAB should be shown. 5328 * Returns true if the WebView is now in 5329 * selecting text mode (including if it was already in that mode, and this 5330 * method did nothing). 5331 */ 5332 private boolean setUpSelect(boolean selectWord, int x, int y) { 5333 if (0 == mNativeClass) return false; // client isn't initialized 5334 if (inFullScreenMode()) return false; 5335 if (mSelectingText) return true; 5336 nativeResetSelection(); 5337 if (selectWord && !nativeWordSelection(x, y)) { 5338 selectionDone(); 5339 return false; 5340 } 5341 mSelectCallback = new SelectActionModeCallback(); 5342 mSelectCallback.setWebView(this); 5343 if (startActionMode(mSelectCallback) == null) { 5344 // There is no ActionMode, so do not allow the user to modify a 5345 // selection. 5346 selectionDone(); 5347 return false; 5348 } 5349 mExtendSelection = false; 5350 mSelectingText = mDrawSelectionPointer = true; 5351 // don't let the picture change during text selection 5352 WebViewCore.pauseUpdatePicture(mWebViewCore); 5353 if (nativeHasCursorNode()) { 5354 Rect rect = nativeCursorNodeBounds(); 5355 mSelectX = contentToViewX(rect.left); 5356 mSelectY = contentToViewY(rect.top); 5357 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5358 mSelectX = mScrollX + mLastTouchX; 5359 mSelectY = mScrollY + mLastTouchY; 5360 } else { 5361 mSelectX = mScrollX + getViewWidth() / 2; 5362 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5363 } 5364 nativeHideCursor(); 5365 mMinAutoScrollX = 0; 5366 mMaxAutoScrollX = getViewWidth(); 5367 mMinAutoScrollY = 0; 5368 mMaxAutoScrollY = getViewHeightWithTitle(); 5369 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 5370 viewToContentY(mSelectY), mScrollingLayerRect, 5371 mScrollingLayerBounds); 5372 if (mScrollingLayer != 0) { 5373 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5374 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5375 contentToViewX(mScrollingLayerBounds.left)); 5376 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5377 contentToViewX(mScrollingLayerBounds.right)); 5378 } 5379 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5380 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5381 contentToViewY(mScrollingLayerBounds.top)); 5382 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5383 contentToViewY(mScrollingLayerBounds.bottom)); 5384 } 5385 } 5386 mMinAutoScrollX += SELECT_SCROLL; 5387 mMaxAutoScrollX -= SELECT_SCROLL; 5388 mMinAutoScrollY += SELECT_SCROLL; 5389 mMaxAutoScrollY -= SELECT_SCROLL; 5390 return true; 5391 } 5392 5393 /** 5394 * Use this method to put the WebView into text selection mode. 5395 * Do not rely on this functionality; it will be deprecated in the future. 5396 * @deprecated This method is now obsolete. 5397 */ 5398 @Deprecated 5399 public void emulateShiftHeld() { 5400 checkThread(); 5401 setUpSelect(false, 0, 0); 5402 } 5403 5404 /** 5405 * Select all of the text in this WebView. 5406 * 5407 * @hide pending API council approval. 5408 */ 5409 public void selectAll() { 5410 if (0 == mNativeClass) return; // client isn't initialized 5411 if (inFullScreenMode()) return; 5412 if (!mSelectingText) { 5413 // retrieve a point somewhere within the text 5414 Point select = nativeSelectableText(); 5415 if (!selectText(select.x, select.y)) return; 5416 } 5417 nativeSelectAll(); 5418 mDrawSelectionPointer = false; 5419 mExtendSelection = true; 5420 invalidate(); 5421 } 5422 5423 /** 5424 * Called when the selection has been removed. 5425 */ 5426 void selectionDone() { 5427 if (mSelectingText) { 5428 mSelectingText = false; 5429 // finish is idempotent, so this is fine even if selectionDone was 5430 // called by mSelectCallback.onDestroyActionMode 5431 mSelectCallback.finish(); 5432 mSelectCallback = null; 5433 WebViewCore.resumePriority(); 5434 WebViewCore.resumeUpdatePicture(mWebViewCore); 5435 invalidate(); // redraw without selection 5436 mAutoScrollX = 0; 5437 mAutoScrollY = 0; 5438 mSentAutoScrollMessage = false; 5439 } 5440 } 5441 5442 /** 5443 * Copy the selection to the clipboard 5444 * 5445 * @hide pending API council approval. 5446 */ 5447 public boolean copySelection() { 5448 boolean copiedSomething = false; 5449 String selection = getSelection(); 5450 if (selection != null && selection != "") { 5451 if (DebugFlags.WEB_VIEW) { 5452 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5453 } 5454 Toast.makeText(mContext 5455 , com.android.internal.R.string.text_copied 5456 , Toast.LENGTH_SHORT).show(); 5457 copiedSomething = true; 5458 ClipboardManager cm = (ClipboardManager)getContext() 5459 .getSystemService(Context.CLIPBOARD_SERVICE); 5460 cm.setText(selection); 5461 } 5462 invalidate(); // remove selection region and pointer 5463 return copiedSomething; 5464 } 5465 5466 /** 5467 * @hide pending API Council approval. 5468 */ 5469 public SearchBox getSearchBox() { 5470 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5471 return null; 5472 } 5473 return mWebViewCore.getBrowserFrame().getSearchBox(); 5474 } 5475 5476 /** 5477 * Returns the currently highlighted text as a string. 5478 */ 5479 String getSelection() { 5480 if (mNativeClass == 0) return ""; 5481 return nativeGetSelection(); 5482 } 5483 5484 @Override 5485 protected void onAttachedToWindow() { 5486 super.onAttachedToWindow(); 5487 if (hasWindowFocus()) setActive(true); 5488 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5489 if (mGlobalLayoutListener == null) { 5490 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5491 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5492 } 5493 if (mScrollChangedListener == null) { 5494 mScrollChangedListener = new InnerScrollChangedListener(); 5495 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5496 } 5497 5498 addAccessibilityApisToJavaScript(); 5499 5500 mTouchEventQueue.reset(); 5501 } 5502 5503 @Override 5504 protected void onDetachedFromWindow() { 5505 clearHelpers(); 5506 mZoomManager.dismissZoomPicker(); 5507 if (hasWindowFocus()) setActive(false); 5508 5509 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5510 if (mGlobalLayoutListener != null) { 5511 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5512 mGlobalLayoutListener = null; 5513 } 5514 if (mScrollChangedListener != null) { 5515 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5516 mScrollChangedListener = null; 5517 } 5518 5519 removeAccessibilityApisFromJavaScript(); 5520 5521 super.onDetachedFromWindow(); 5522 } 5523 5524 @Override 5525 protected void onVisibilityChanged(View changedView, int visibility) { 5526 super.onVisibilityChanged(changedView, visibility); 5527 // The zoomManager may be null if the webview is created from XML that 5528 // specifies the view's visibility param as not visible (see http://b/2794841) 5529 if (visibility != View.VISIBLE && mZoomManager != null) { 5530 mZoomManager.dismissZoomPicker(); 5531 } 5532 } 5533 5534 /** 5535 * @deprecated WebView no longer needs to implement 5536 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5537 */ 5538 @Deprecated 5539 public void onChildViewAdded(View parent, View child) {} 5540 5541 /** 5542 * @deprecated WebView no longer needs to implement 5543 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5544 */ 5545 @Deprecated 5546 public void onChildViewRemoved(View p, View child) {} 5547 5548 /** 5549 * @deprecated WebView should not have implemented 5550 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5551 */ 5552 @Deprecated 5553 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5554 } 5555 5556 void setActive(boolean active) { 5557 if (active) { 5558 if (hasFocus()) { 5559 // If our window regained focus, and we have focus, then begin 5560 // drawing the cursor ring 5561 mDrawCursorRing = true; 5562 setFocusControllerActive(true); 5563 if (mNativeClass != 0) { 5564 recordButtons(null, true, false, true); 5565 } 5566 } else { 5567 if (!inEditingMode()) { 5568 // If our window gained focus, but we do not have it, do not 5569 // draw the cursor ring. 5570 mDrawCursorRing = false; 5571 setFocusControllerActive(false); 5572 } 5573 // We do not call recordButtons here because we assume 5574 // that when we lost focus, or window focus, it got called with 5575 // false for the first parameter 5576 } 5577 } else { 5578 if (!mZoomManager.isZoomPickerVisible()) { 5579 /* 5580 * The external zoom controls come in their own window, so our 5581 * window loses focus. Our policy is to not draw the cursor ring 5582 * if our window is not focused, but this is an exception since 5583 * the user can still navigate the web page with the zoom 5584 * controls showing. 5585 */ 5586 mDrawCursorRing = false; 5587 } 5588 mKeysPressed.clear(); 5589 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5590 mTouchMode = TOUCH_DONE_MODE; 5591 if (mNativeClass != 0) { 5592 recordButtons(null, false, false, true); 5593 } 5594 setFocusControllerActive(false); 5595 } 5596 invalidate(); 5597 } 5598 5599 // To avoid drawing the cursor ring, and remove the TextView when our window 5600 // loses focus. 5601 @Override 5602 public void onWindowFocusChanged(boolean hasWindowFocus) { 5603 setActive(hasWindowFocus); 5604 if (hasWindowFocus) { 5605 JWebCoreJavaBridge.setActiveWebView(this); 5606 if (mPictureUpdatePausedForFocusChange) { 5607 WebViewCore.resumeUpdatePicture(mWebViewCore); 5608 mPictureUpdatePausedForFocusChange = false; 5609 } 5610 } else { 5611 JWebCoreJavaBridge.removeActiveWebView(this); 5612 final WebSettings settings = getSettings(); 5613 if (settings != null && settings.enableSmoothTransition() && 5614 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5615 WebViewCore.pauseUpdatePicture(mWebViewCore); 5616 mPictureUpdatePausedForFocusChange = true; 5617 } 5618 } 5619 super.onWindowFocusChanged(hasWindowFocus); 5620 } 5621 5622 /* 5623 * Pass a message to WebCore Thread, telling the WebCore::Page's 5624 * FocusController to be "inactive" so that it will 5625 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5626 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5627 */ 5628 /* package */ void setFocusControllerActive(boolean active) { 5629 if (mWebViewCore == null) return; 5630 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5631 // Need to send this message after the document regains focus. 5632 if (active && mListBoxMessage != null) { 5633 mWebViewCore.sendMessage(mListBoxMessage); 5634 mListBoxMessage = null; 5635 } 5636 } 5637 5638 @Override 5639 protected void onFocusChanged(boolean focused, int direction, 5640 Rect previouslyFocusedRect) { 5641 if (DebugFlags.WEB_VIEW) { 5642 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5643 } 5644 if (focused) { 5645 // When we regain focus, if we have window focus, resume drawing 5646 // the cursor ring 5647 if (hasWindowFocus()) { 5648 mDrawCursorRing = true; 5649 if (mNativeClass != 0) { 5650 recordButtons(null, true, false, true); 5651 } 5652 setFocusControllerActive(true); 5653 //} else { 5654 // The WebView has gained focus while we do not have 5655 // windowfocus. When our window lost focus, we should have 5656 // called recordButtons(false...) 5657 } 5658 } else { 5659 // When we lost focus, unless focus went to the TextView (which is 5660 // true if we are in editing mode), stop drawing the cursor ring. 5661 if (!inEditingMode()) { 5662 mDrawCursorRing = false; 5663 if (mNativeClass != 0) { 5664 recordButtons(null, false, false, true); 5665 } 5666 setFocusControllerActive(false); 5667 } 5668 mKeysPressed.clear(); 5669 } 5670 5671 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5672 } 5673 5674 void setGLRectViewport() { 5675 // Use the getGlobalVisibleRect() to get the intersection among the parents 5676 // visible == false means we're clipped - send a null rect down to indicate that 5677 // we should not draw 5678 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5679 if (visible) { 5680 // Then need to invert the Y axis, just for GL 5681 View rootView = getRootView(); 5682 int rootViewHeight = rootView.getHeight(); 5683 mViewRectViewport.set(mGLRectViewport); 5684 int savedWebViewBottom = mGLRectViewport.bottom; 5685 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5686 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5687 mGLViewportEmpty = false; 5688 } else { 5689 mGLViewportEmpty = true; 5690 } 5691 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5692 mGLViewportEmpty ? null : mViewRectViewport); 5693 } 5694 5695 /** 5696 * @hide 5697 */ 5698 @Override 5699 protected boolean setFrame(int left, int top, int right, int bottom) { 5700 boolean changed = super.setFrame(left, top, right, bottom); 5701 if (!changed && mHeightCanMeasure) { 5702 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5703 // in WebViewCore after we get the first layout. We do call 5704 // requestLayout() when we get contentSizeChanged(). But the View 5705 // system won't call onSizeChanged if the dimension is not changed. 5706 // In this case, we need to call sendViewSizeZoom() explicitly to 5707 // notify the WebKit about the new dimensions. 5708 sendViewSizeZoom(false); 5709 } 5710 setGLRectViewport(); 5711 return changed; 5712 } 5713 5714 @Override 5715 protected void onSizeChanged(int w, int h, int ow, int oh) { 5716 super.onSizeChanged(w, h, ow, oh); 5717 5718 // adjust the max viewport width depending on the view dimensions. This 5719 // is to ensure the scaling is not going insane. So do not shrink it if 5720 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5721 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5722 if (newMaxViewportWidth > sMaxViewportWidth) { 5723 sMaxViewportWidth = newMaxViewportWidth; 5724 } 5725 5726 mZoomManager.onSizeChanged(w, h, ow, oh); 5727 5728 if (mLoadedPicture != null && mDelaySetPicture == null) { 5729 // Size changes normally result in a new picture 5730 // Re-set the loaded picture to simulate that 5731 // However, do not update the base layer as that hasn't changed 5732 setNewPicture(mLoadedPicture, false); 5733 } 5734 } 5735 5736 @Override 5737 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5738 super.onScrollChanged(l, t, oldl, oldt); 5739 if (!mInOverScrollMode) { 5740 sendOurVisibleRect(); 5741 // update WebKit if visible title bar height changed. The logic is same 5742 // as getVisibleTitleHeightImpl. 5743 int titleHeight = getTitleHeight(); 5744 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5745 sendViewSizeZoom(false); 5746 } 5747 } 5748 } 5749 5750 @Override 5751 public boolean dispatchKeyEvent(KeyEvent event) { 5752 switch (event.getAction()) { 5753 case KeyEvent.ACTION_DOWN: 5754 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5755 break; 5756 case KeyEvent.ACTION_MULTIPLE: 5757 // Always accept the action. 5758 break; 5759 case KeyEvent.ACTION_UP: 5760 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5761 if (location == -1) { 5762 // We did not receive the key down for this key, so do not 5763 // handle the key up. 5764 return false; 5765 } else { 5766 // We did receive the key down. Handle the key up, and 5767 // remove it from our pressed keys. 5768 mKeysPressed.remove(location); 5769 } 5770 break; 5771 default: 5772 // Accept the action. This should not happen, unless a new 5773 // action is added to KeyEvent. 5774 break; 5775 } 5776 if (inEditingMode() && mWebTextView.isFocused()) { 5777 // Ensure that the WebTextView gets the event, even if it does 5778 // not currently have a bounds. 5779 return mWebTextView.dispatchKeyEvent(event); 5780 } else { 5781 return super.dispatchKeyEvent(event); 5782 } 5783 } 5784 5785 /* 5786 * Here is the snap align logic: 5787 * 1. If it starts nearly horizontally or vertically, snap align; 5788 * 2. If there is a dramitic direction change, let it go; 5789 * 5790 * Adjustable parameters. Angle is the radians on a unit circle, limited 5791 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5792 */ 5793 private static final float HSLOPE_TO_START_SNAP = .25f; 5794 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5795 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5796 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5797 /* 5798 * These values are used to influence the average angle when entering 5799 * snap mode. If is is the first movement entering snap, we set the average 5800 * to the appropriate ideal. If the user is entering into snap after the 5801 * first movement, then we average the average angle with these values. 5802 */ 5803 private static final float ANGLE_VERT = 2f; 5804 private static final float ANGLE_HORIZ = 0f; 5805 /* 5806 * The modified moving average weight. 5807 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5808 */ 5809 private static final float MMA_WEIGHT_N = 5; 5810 5811 private boolean hitFocusedPlugin(int contentX, int contentY) { 5812 if (DebugFlags.WEB_VIEW) { 5813 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5814 Rect r = nativeFocusNodeBounds(); 5815 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5816 + ", " + r.right + ", " + r.bottom + ")"); 5817 } 5818 return nativeFocusIsPlugin() 5819 && nativeFocusNodeBounds().contains(contentX, contentY); 5820 } 5821 5822 private boolean shouldForwardTouchEvent() { 5823 if (mFullScreenHolder != null) return true; 5824 if (mBlockWebkitViewMessages) return false; 5825 return mForwardTouchEvents 5826 && !mSelectingText 5827 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5828 && mPreventDefault != PREVENT_DEFAULT_NO; 5829 } 5830 5831 private boolean inFullScreenMode() { 5832 return mFullScreenHolder != null; 5833 } 5834 5835 private void dismissFullScreenMode() { 5836 if (inFullScreenMode()) { 5837 mFullScreenHolder.hide(); 5838 mFullScreenHolder = null; 5839 } 5840 } 5841 5842 void onPinchToZoomAnimationStart() { 5843 // cancel the single touch handling 5844 cancelTouch(); 5845 onZoomAnimationStart(); 5846 } 5847 5848 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5849 onZoomAnimationEnd(); 5850 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5851 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5852 // as it may trigger the unwanted fling. 5853 mTouchMode = TOUCH_PINCH_DRAG; 5854 mConfirmMove = true; 5855 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5856 } 5857 5858 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5859 // layer is found. 5860 private void startScrollingLayer(float x, float y) { 5861 int contentX = viewToContentX((int) x + mScrollX); 5862 int contentY = viewToContentY((int) y + mScrollY); 5863 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5864 mScrollingLayerRect, mScrollingLayerBounds); 5865 if (mScrollingLayer != 0) { 5866 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5867 } 5868 } 5869 5870 // 1/(density * density) used to compute the distance between points. 5871 // Computed in init(). 5872 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5873 5874 // The distance between two points reported in onTouchEvent scaled by the 5875 // density of the screen. 5876 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5877 5878 @Override 5879 public boolean onHoverEvent(MotionEvent event) { 5880 if (mNativeClass == 0) { 5881 return false; 5882 } 5883 WebViewCore.CursorData data = cursorDataNoPosition(); 5884 data.mX = viewToContentX((int) event.getX() + mScrollX); 5885 data.mY = viewToContentY((int) event.getY() + mScrollY); 5886 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5887 return true; 5888 } 5889 5890 @Override 5891 public boolean onTouchEvent(MotionEvent ev) { 5892 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5893 return false; 5894 } 5895 5896 if (DebugFlags.WEB_VIEW) { 5897 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5898 + " mTouchMode=" + mTouchMode 5899 + " numPointers=" + ev.getPointerCount()); 5900 } 5901 5902 // If WebKit wasn't interested in this multitouch gesture, enqueue 5903 // the event for handling directly rather than making the round trip 5904 // to WebKit and back. 5905 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5906 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5907 } else { 5908 mTouchEventQueue.enqueueTouchEvent(ev); 5909 } 5910 5911 // Since all events are handled asynchronously, we always want the gesture stream. 5912 return true; 5913 } 5914 5915 private float calculateDragAngle(int dx, int dy) { 5916 dx = Math.abs(dx); 5917 dy = Math.abs(dy); 5918 return (float) Math.atan2(dy, dx); 5919 } 5920 5921 /* 5922 * Common code for single touch and multi-touch. 5923 * (x, y) denotes current focus point, which is the touch point for single touch 5924 * and the middle point for multi-touch. 5925 */ 5926 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5927 long eventTime = ev.getEventTime(); 5928 5929 // Due to the touch screen edge effect, a touch closer to the edge 5930 // always snapped to the edge. As getViewWidth() can be different from 5931 // getWidth() due to the scrollbar, adjusting the point to match 5932 // getViewWidth(). Same applied to the height. 5933 x = Math.min(x, getViewWidth() - 1); 5934 y = Math.min(y, getViewHeightWithTitle() - 1); 5935 5936 int deltaX = mLastTouchX - x; 5937 int deltaY = mLastTouchY - y; 5938 int contentX = viewToContentX(x + mScrollX); 5939 int contentY = viewToContentY(y + mScrollY); 5940 5941 switch (action) { 5942 case MotionEvent.ACTION_DOWN: { 5943 mPreventDefault = PREVENT_DEFAULT_NO; 5944 mConfirmMove = false; 5945 mInitialHitTestResult = null; 5946 if (!mScroller.isFinished()) { 5947 // stop the current scroll animation, but if this is 5948 // the start of a fling, allow it to add to the current 5949 // fling's velocity 5950 mScroller.abortAnimation(); 5951 mTouchMode = TOUCH_DRAG_START_MODE; 5952 mConfirmMove = true; 5953 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5954 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5955 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5956 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 5957 removeTouchHighlight(); 5958 } 5959 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5960 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5961 } else { 5962 // commit the short press action for the previous tap 5963 doShortPress(); 5964 mTouchMode = TOUCH_INIT_MODE; 5965 mDeferTouchProcess = !mBlockWebkitViewMessages 5966 && (!inFullScreenMode() && mForwardTouchEvents) 5967 ? hitFocusedPlugin(contentX, contentY) 5968 : false; 5969 } 5970 } else { // the normal case 5971 mTouchMode = TOUCH_INIT_MODE; 5972 mDeferTouchProcess = !mBlockWebkitViewMessages 5973 && (!inFullScreenMode() && mForwardTouchEvents) 5974 ? hitFocusedPlugin(contentX, contentY) 5975 : false; 5976 if (!mBlockWebkitViewMessages) { 5977 mWebViewCore.sendMessage( 5978 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5979 } 5980 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 5981 TouchHighlightData data = new TouchHighlightData(); 5982 data.mX = contentX; 5983 data.mY = contentY; 5984 data.mNativeLayerRect = new Rect(); 5985 data.mNativeLayer = nativeScrollableLayer( 5986 contentX, contentY, data.mNativeLayerRect, null); 5987 data.mSlop = viewToContentDimension(mNavSlop); 5988 mTouchHighlightRegion.setEmpty(); 5989 if (!mBlockWebkitViewMessages) { 5990 mTouchHighlightRequested = System.currentTimeMillis(); 5991 mWebViewCore.sendMessageAtFrontOfQueue( 5992 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data); 5993 } 5994 if (DEBUG_TOUCH_HIGHLIGHT) { 5995 if (getSettings().getNavDump()) { 5996 mTouchHighlightX = (int) x + mScrollX; 5997 mTouchHighlightY = (int) y + mScrollY; 5998 mPrivateHandler.postDelayed(new Runnable() { 5999 public void run() { 6000 mTouchHighlightX = mTouchHighlightY = 0; 6001 invalidate(); 6002 } 6003 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6004 } 6005 } 6006 } 6007 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6008 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6009 (eventTime - mLastTouchUpTime), eventTime); 6010 } 6011 if (mSelectingText) { 6012 mDrawSelectionPointer = false; 6013 mSelectionStarted = nativeStartSelection(contentX, contentY); 6014 if (DebugFlags.WEB_VIEW) { 6015 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6016 } 6017 invalidate(); 6018 } 6019 } 6020 // Trigger the link 6021 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6022 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6023 mPrivateHandler.sendEmptyMessageDelayed( 6024 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6025 mPrivateHandler.sendEmptyMessageDelayed( 6026 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6027 if (inFullScreenMode() || mDeferTouchProcess) { 6028 mPreventDefault = PREVENT_DEFAULT_YES; 6029 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6030 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6031 } else { 6032 mPreventDefault = PREVENT_DEFAULT_NO; 6033 } 6034 // pass the touch events from UI thread to WebCore thread 6035 if (shouldForwardTouchEvent()) { 6036 TouchEventData ted = new TouchEventData(); 6037 ted.mAction = action; 6038 ted.mIds = new int[1]; 6039 ted.mIds[0] = ev.getPointerId(0); 6040 ted.mPoints = new Point[1]; 6041 ted.mPoints[0] = new Point(contentX, contentY); 6042 ted.mPointsInView = new Point[1]; 6043 ted.mPointsInView[0] = new Point(x, y); 6044 ted.mMetaState = ev.getMetaState(); 6045 ted.mReprocess = mDeferTouchProcess; 6046 ted.mNativeLayer = nativeScrollableLayer( 6047 contentX, contentY, ted.mNativeLayerRect, null); 6048 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6049 mTouchEventQueue.preQueueTouchEventData(ted); 6050 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6051 if (mDeferTouchProcess) { 6052 // still needs to set them for compute deltaX/Y 6053 mLastTouchX = x; 6054 mLastTouchY = y; 6055 break; 6056 } 6057 if (!inFullScreenMode()) { 6058 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6059 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6060 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6061 action, 0), TAP_TIMEOUT); 6062 } 6063 } 6064 } 6065 startTouch(x, y, eventTime); 6066 break; 6067 } 6068 case MotionEvent.ACTION_MOVE: { 6069 boolean firstMove = false; 6070 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6071 >= mTouchSlopSquare) { 6072 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6073 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6074 mConfirmMove = true; 6075 firstMove = true; 6076 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6077 mTouchMode = TOUCH_INIT_MODE; 6078 } 6079 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6080 removeTouchHighlight(); 6081 } 6082 } 6083 // pass the touch events from UI thread to WebCore thread 6084 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6085 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6086 TouchEventData ted = new TouchEventData(); 6087 ted.mAction = action; 6088 ted.mIds = new int[1]; 6089 ted.mIds[0] = ev.getPointerId(0); 6090 ted.mPoints = new Point[1]; 6091 ted.mPoints[0] = new Point(contentX, contentY); 6092 ted.mPointsInView = new Point[1]; 6093 ted.mPointsInView[0] = new Point(x, y); 6094 ted.mMetaState = ev.getMetaState(); 6095 ted.mReprocess = mDeferTouchProcess; 6096 ted.mNativeLayer = mScrollingLayer; 6097 ted.mNativeLayerRect.set(mScrollingLayerRect); 6098 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6099 mTouchEventQueue.preQueueTouchEventData(ted); 6100 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6101 mLastSentTouchTime = eventTime; 6102 if (mDeferTouchProcess) { 6103 break; 6104 } 6105 if (firstMove && !inFullScreenMode()) { 6106 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6107 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6108 action, 0), TAP_TIMEOUT); 6109 } 6110 } 6111 if (mTouchMode == TOUCH_DONE_MODE 6112 || mPreventDefault == PREVENT_DEFAULT_YES) { 6113 // no dragging during scroll zoom animation, or when prevent 6114 // default is yes 6115 break; 6116 } 6117 if (mVelocityTracker == null) { 6118 Log.e(LOGTAG, "Got null mVelocityTracker when " 6119 + "mPreventDefault = " + mPreventDefault 6120 + " mDeferTouchProcess = " + mDeferTouchProcess 6121 + " mTouchMode = " + mTouchMode); 6122 } else { 6123 mVelocityTracker.addMovement(ev); 6124 } 6125 if (mSelectingText && mSelectionStarted) { 6126 if (DebugFlags.WEB_VIEW) { 6127 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6128 } 6129 ViewParent parent = getParent(); 6130 if (parent != null) { 6131 parent.requestDisallowInterceptTouchEvent(true); 6132 } 6133 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6134 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6135 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6136 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6137 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6138 && !mSentAutoScrollMessage) { 6139 mSentAutoScrollMessage = true; 6140 mPrivateHandler.sendEmptyMessageDelayed( 6141 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6142 } 6143 if (deltaX != 0 || deltaY != 0) { 6144 nativeExtendSelection(contentX, contentY); 6145 invalidate(); 6146 } 6147 break; 6148 } 6149 6150 if (mTouchMode != TOUCH_DRAG_MODE && 6151 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6152 6153 if (!mConfirmMove) { 6154 break; 6155 } 6156 6157 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6158 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6159 // track mLastTouchTime as we may need to do fling at 6160 // ACTION_UP 6161 mLastTouchTime = eventTime; 6162 break; 6163 } 6164 6165 // Only lock dragging to one axis if we don't have a scale in progress. 6166 // Scaling implies free-roaming movement. Note this is only ever a question 6167 // if mZoomManager.supportsPanDuringZoom() is true. 6168 final ScaleGestureDetector detector = 6169 mZoomManager.getMultiTouchGestureDetector(); 6170 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6171 if (detector == null || !detector.isInProgress()) { 6172 // if it starts nearly horizontal or vertical, enforce it 6173 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6174 mSnapScrollMode = SNAP_X; 6175 mSnapPositive = deltaX > 0; 6176 mAverageAngle = ANGLE_HORIZ; 6177 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6178 mSnapScrollMode = SNAP_Y; 6179 mSnapPositive = deltaY > 0; 6180 mAverageAngle = ANGLE_VERT; 6181 } 6182 } 6183 6184 mTouchMode = TOUCH_DRAG_MODE; 6185 mLastTouchX = x; 6186 mLastTouchY = y; 6187 deltaX = 0; 6188 deltaY = 0; 6189 6190 startScrollingLayer(x, y); 6191 startDrag(); 6192 } 6193 6194 // do pan 6195 boolean done = false; 6196 boolean keepScrollBarsVisible = false; 6197 if (deltaX == 0 && deltaY == 0) { 6198 keepScrollBarsVisible = done = true; 6199 } else { 6200 mAverageAngle += 6201 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6202 / MMA_WEIGHT_N; 6203 if (mSnapScrollMode != SNAP_NONE) { 6204 if (mSnapScrollMode == SNAP_Y) { 6205 // radical change means getting out of snap mode 6206 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6207 mSnapScrollMode = SNAP_NONE; 6208 } 6209 } 6210 if (mSnapScrollMode == SNAP_X) { 6211 // radical change means getting out of snap mode 6212 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6213 mSnapScrollMode = SNAP_NONE; 6214 } 6215 } 6216 } else { 6217 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6218 mSnapScrollMode = SNAP_X; 6219 mSnapPositive = deltaX > 0; 6220 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6221 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6222 mSnapScrollMode = SNAP_Y; 6223 mSnapPositive = deltaY > 0; 6224 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6225 } 6226 } 6227 if (mSnapScrollMode != SNAP_NONE) { 6228 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6229 deltaY = 0; 6230 } else { 6231 deltaX = 0; 6232 } 6233 } 6234 mLastTouchX = x; 6235 mLastTouchY = y; 6236 if ((deltaX | deltaY) != 0) { 6237 mHeldMotionless = MOTIONLESS_FALSE; 6238 } 6239 mLastTouchTime = eventTime; 6240 } 6241 6242 doDrag(deltaX, deltaY); 6243 6244 // Turn off scrollbars when dragging a layer. 6245 if (keepScrollBarsVisible && 6246 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6247 if (mHeldMotionless != MOTIONLESS_TRUE) { 6248 mHeldMotionless = MOTIONLESS_TRUE; 6249 invalidate(); 6250 } 6251 // keep the scrollbar on the screen even there is no scroll 6252 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6253 false); 6254 // return false to indicate that we can't pan out of the 6255 // view space 6256 return !done; 6257 } 6258 break; 6259 } 6260 case MotionEvent.ACTION_UP: { 6261 if (!isFocused()) requestFocus(); 6262 // pass the touch events from UI thread to WebCore thread 6263 if (shouldForwardTouchEvent()) { 6264 TouchEventData ted = new TouchEventData(); 6265 ted.mIds = new int[1]; 6266 ted.mIds[0] = ev.getPointerId(0); 6267 ted.mAction = action; 6268 ted.mPoints = new Point[1]; 6269 ted.mPoints[0] = new Point(contentX, contentY); 6270 ted.mPointsInView = new Point[1]; 6271 ted.mPointsInView[0] = new Point(x, y); 6272 ted.mMetaState = ev.getMetaState(); 6273 ted.mReprocess = mDeferTouchProcess; 6274 ted.mNativeLayer = mScrollingLayer; 6275 ted.mNativeLayerRect.set(mScrollingLayerRect); 6276 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6277 mTouchEventQueue.preQueueTouchEventData(ted); 6278 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6279 } 6280 mLastTouchUpTime = eventTime; 6281 if (mSentAutoScrollMessage) { 6282 mAutoScrollX = mAutoScrollY = 0; 6283 } 6284 switch (mTouchMode) { 6285 case TOUCH_DOUBLE_TAP_MODE: // double tap 6286 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6287 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6288 if (inFullScreenMode() || mDeferTouchProcess) { 6289 TouchEventData ted = new TouchEventData(); 6290 ted.mIds = new int[1]; 6291 ted.mIds[0] = ev.getPointerId(0); 6292 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6293 ted.mPoints = new Point[1]; 6294 ted.mPoints[0] = new Point(contentX, contentY); 6295 ted.mPointsInView = new Point[1]; 6296 ted.mPointsInView[0] = new Point(x, y); 6297 ted.mMetaState = ev.getMetaState(); 6298 ted.mReprocess = mDeferTouchProcess; 6299 ted.mNativeLayer = nativeScrollableLayer( 6300 contentX, contentY, 6301 ted.mNativeLayerRect, null); 6302 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6303 mTouchEventQueue.preQueueTouchEventData(ted); 6304 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6305 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6306 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6307 mTouchMode = TOUCH_DONE_MODE; 6308 } 6309 break; 6310 case TOUCH_INIT_MODE: // tap 6311 case TOUCH_SHORTPRESS_START_MODE: 6312 case TOUCH_SHORTPRESS_MODE: 6313 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6314 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6315 if (mConfirmMove) { 6316 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6317 " WebCore's response for touch down."); 6318 if (mPreventDefault != PREVENT_DEFAULT_YES 6319 && (computeMaxScrollX() > 0 6320 || computeMaxScrollY() > 0)) { 6321 // If the user has performed a very quick touch 6322 // sequence it is possible that we may get here 6323 // before WebCore has had a chance to process the events. 6324 // In this case, any call to preventDefault in the 6325 // JS touch handler will not have been executed yet. 6326 // Hence we will see both the UI (now) and WebCore 6327 // (when context switches) handling the event, 6328 // regardless of whether the web developer actually 6329 // doeses preventDefault in their touch handler. This 6330 // is the nature of our asynchronous touch model. 6331 6332 // we will not rewrite drag code here, but we 6333 // will try fling if it applies. 6334 WebViewCore.reducePriority(); 6335 // to get better performance, pause updating the 6336 // picture 6337 WebViewCore.pauseUpdatePicture(mWebViewCore); 6338 // fall through to TOUCH_DRAG_MODE 6339 } else { 6340 // WebKit may consume the touch event and modify 6341 // DOM. drawContentPicture() will be called with 6342 // animateSroll as true for better performance. 6343 // Force redraw in high-quality. 6344 invalidate(); 6345 break; 6346 } 6347 } else { 6348 if (mSelectingText) { 6349 // tapping on selection or controls does nothing 6350 if (!nativeHitSelection(contentX, contentY)) { 6351 selectionDone(); 6352 } 6353 break; 6354 } 6355 // only trigger double tap if the WebView is 6356 // scalable 6357 if (mTouchMode == TOUCH_INIT_MODE 6358 && (canZoomIn() || canZoomOut())) { 6359 mPrivateHandler.sendEmptyMessageDelayed( 6360 RELEASE_SINGLE_TAP, ViewConfiguration 6361 .getDoubleTapTimeout()); 6362 } else { 6363 doShortPress(); 6364 } 6365 break; 6366 } 6367 case TOUCH_DRAG_MODE: 6368 case TOUCH_DRAG_LAYER_MODE: 6369 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6370 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6371 // if the user waits a while w/o moving before the 6372 // up, we don't want to do a fling 6373 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6374 if (mVelocityTracker == null) { 6375 Log.e(LOGTAG, "Got null mVelocityTracker when " 6376 + "mPreventDefault = " 6377 + mPreventDefault 6378 + " mDeferTouchProcess = " 6379 + mDeferTouchProcess); 6380 } else { 6381 mVelocityTracker.addMovement(ev); 6382 } 6383 // set to MOTIONLESS_IGNORE so that it won't keep 6384 // removing and sending message in 6385 // drawCoreAndCursorRing() 6386 mHeldMotionless = MOTIONLESS_IGNORE; 6387 doFling(); 6388 break; 6389 } else { 6390 if (mScroller.springBack(mScrollX, mScrollY, 0, 6391 computeMaxScrollX(), 0, 6392 computeMaxScrollY())) { 6393 invalidate(); 6394 } 6395 } 6396 // redraw in high-quality, as we're done dragging 6397 mHeldMotionless = MOTIONLESS_TRUE; 6398 invalidate(); 6399 // fall through 6400 case TOUCH_DRAG_START_MODE: 6401 // TOUCH_DRAG_START_MODE should not happen for the real 6402 // device as we almost certain will get a MOVE. But this 6403 // is possible on emulator. 6404 mLastVelocity = 0; 6405 WebViewCore.resumePriority(); 6406 if (!mSelectingText) { 6407 WebViewCore.resumeUpdatePicture(mWebViewCore); 6408 } 6409 break; 6410 } 6411 stopTouch(); 6412 break; 6413 } 6414 case MotionEvent.ACTION_CANCEL: { 6415 if (mTouchMode == TOUCH_DRAG_MODE) { 6416 mScroller.springBack(mScrollX, mScrollY, 0, 6417 computeMaxScrollX(), 0, computeMaxScrollY()); 6418 invalidate(); 6419 } 6420 cancelWebCoreTouchEvent(contentX, contentY, false); 6421 cancelTouch(); 6422 break; 6423 } 6424 } 6425 return true; 6426 } 6427 6428 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6429 TouchEventData ted = new TouchEventData(); 6430 ted.mAction = ev.getActionMasked(); 6431 final int count = ev.getPointerCount(); 6432 ted.mIds = new int[count]; 6433 ted.mPoints = new Point[count]; 6434 ted.mPointsInView = new Point[count]; 6435 for (int c = 0; c < count; c++) { 6436 ted.mIds[c] = ev.getPointerId(c); 6437 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6438 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6439 ted.mPoints[c] = new Point(x, y); 6440 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6441 } 6442 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6443 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6444 ted.mActionIndex = ev.getActionIndex(); 6445 } 6446 ted.mMetaState = ev.getMetaState(); 6447 ted.mReprocess = true; 6448 ted.mMotionEvent = MotionEvent.obtain(ev); 6449 ted.mSequence = sequence; 6450 mTouchEventQueue.preQueueTouchEventData(ted); 6451 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6452 cancelLongPress(); 6453 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6454 } 6455 6456 void handleMultiTouchInWebView(MotionEvent ev) { 6457 if (DebugFlags.WEB_VIEW) { 6458 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6459 + " mTouchMode=" + mTouchMode 6460 + " numPointers=" + ev.getPointerCount() 6461 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6462 } 6463 6464 final ScaleGestureDetector detector = 6465 mZoomManager.getMultiTouchGestureDetector(); 6466 6467 // A few apps use WebView but don't instantiate gesture detector. 6468 // We don't need to support multi touch for them. 6469 if (detector == null) return; 6470 6471 float x = ev.getX(); 6472 float y = ev.getY(); 6473 6474 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6475 detector.onTouchEvent(ev); 6476 6477 if (detector.isInProgress()) { 6478 if (DebugFlags.WEB_VIEW) { 6479 Log.v(LOGTAG, "detector is in progress"); 6480 } 6481 mLastTouchTime = ev.getEventTime(); 6482 x = detector.getFocusX(); 6483 y = detector.getFocusY(); 6484 6485 cancelLongPress(); 6486 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6487 if (!mZoomManager.supportsPanDuringZoom()) { 6488 return; 6489 } 6490 mTouchMode = TOUCH_DRAG_MODE; 6491 if (mVelocityTracker == null) { 6492 mVelocityTracker = VelocityTracker.obtain(); 6493 } 6494 } 6495 } 6496 6497 int action = ev.getActionMasked(); 6498 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6499 cancelTouch(); 6500 action = MotionEvent.ACTION_DOWN; 6501 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6502 // set mLastTouchX/Y to the remaining points for multi-touch. 6503 mLastTouchX = Math.round(x); 6504 mLastTouchY = Math.round(y); 6505 } else if (action == MotionEvent.ACTION_MOVE) { 6506 // negative x or y indicate it is on the edge, skip it. 6507 if (x < 0 || y < 0) { 6508 return; 6509 } 6510 } 6511 6512 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6513 } 6514 6515 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6516 if (shouldForwardTouchEvent()) { 6517 if (removeEvents) { 6518 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6519 } 6520 TouchEventData ted = new TouchEventData(); 6521 ted.mIds = new int[1]; 6522 ted.mIds[0] = 0; 6523 ted.mPoints = new Point[1]; 6524 ted.mPoints[0] = new Point(x, y); 6525 ted.mPointsInView = new Point[1]; 6526 int viewX = contentToViewX(x) - mScrollX; 6527 int viewY = contentToViewY(y) - mScrollY; 6528 ted.mPointsInView[0] = new Point(viewX, viewY); 6529 ted.mAction = MotionEvent.ACTION_CANCEL; 6530 ted.mNativeLayer = nativeScrollableLayer( 6531 x, y, ted.mNativeLayerRect, null); 6532 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6533 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6534 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6535 6536 if (removeEvents) { 6537 // Mark this after sending the message above; we should 6538 // be willing to ignore the cancel event that we just sent. 6539 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6540 } 6541 } 6542 } 6543 6544 private void startTouch(float x, float y, long eventTime) { 6545 // Remember where the motion event started 6546 mStartTouchX = mLastTouchX = Math.round(x); 6547 mStartTouchY = mLastTouchY = Math.round(y); 6548 mLastTouchTime = eventTime; 6549 mVelocityTracker = VelocityTracker.obtain(); 6550 mSnapScrollMode = SNAP_NONE; 6551 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6552 ViewConfiguration.getTapTimeout()); 6553 } 6554 6555 private void startDrag() { 6556 WebViewCore.reducePriority(); 6557 // to get better performance, pause updating the picture 6558 WebViewCore.pauseUpdatePicture(mWebViewCore); 6559 nativeSetIsScrolling(true); 6560 6561 if (!mDragFromTextInput) { 6562 nativeHideCursor(); 6563 } 6564 6565 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6566 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6567 mZoomManager.invokeZoomPicker(); 6568 } 6569 } 6570 6571 private void doDrag(int deltaX, int deltaY) { 6572 if ((deltaX | deltaY) != 0) { 6573 int oldX = mScrollX; 6574 int oldY = mScrollY; 6575 int rangeX = computeMaxScrollX(); 6576 int rangeY = computeMaxScrollY(); 6577 int overscrollDistance = mOverscrollDistance; 6578 6579 // Check for the original scrolling layer in case we change 6580 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6581 // reached the edge of a layer but mScrollingLayer will be non-zero 6582 // if we initiated the drag on a layer. 6583 if (mScrollingLayer != 0) { 6584 final int contentX = viewToContentDimension(deltaX); 6585 final int contentY = viewToContentDimension(deltaY); 6586 6587 // Check the scrolling bounds to see if we will actually do any 6588 // scrolling. The rectangle is in document coordinates. 6589 final int maxX = mScrollingLayerRect.right; 6590 final int maxY = mScrollingLayerRect.bottom; 6591 final int resultX = Math.max(0, 6592 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6593 final int resultY = Math.max(0, 6594 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6595 6596 if (resultX != mScrollingLayerRect.left || 6597 resultY != mScrollingLayerRect.top) { 6598 // In case we switched to dragging the page. 6599 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6600 deltaX = contentX; 6601 deltaY = contentY; 6602 oldX = mScrollingLayerRect.left; 6603 oldY = mScrollingLayerRect.top; 6604 rangeX = maxX; 6605 rangeY = maxY; 6606 } else { 6607 // Scroll the main page if we are not going to scroll the 6608 // layer. This does not reset mScrollingLayer in case the 6609 // user changes directions and the layer can scroll the 6610 // other way. 6611 mTouchMode = TOUCH_DRAG_MODE; 6612 } 6613 } 6614 6615 if (mOverScrollGlow != null) { 6616 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6617 } 6618 6619 overScrollBy(deltaX, deltaY, oldX, oldY, 6620 rangeX, rangeY, 6621 mOverscrollDistance, mOverscrollDistance, true); 6622 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6623 invalidate(); 6624 } 6625 } 6626 mZoomManager.keepZoomPickerVisible(); 6627 } 6628 6629 private void stopTouch() { 6630 if (mScroller.isFinished() && !mSelectingText 6631 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6632 WebViewCore.resumePriority(); 6633 WebViewCore.resumeUpdatePicture(mWebViewCore); 6634 nativeSetIsScrolling(false); 6635 } 6636 6637 // we also use mVelocityTracker == null to tell us that we are 6638 // not "moving around", so we can take the slower/prettier 6639 // mode in the drawing code 6640 if (mVelocityTracker != null) { 6641 mVelocityTracker.recycle(); 6642 mVelocityTracker = null; 6643 } 6644 6645 // Release any pulled glows 6646 if (mOverScrollGlow != null) { 6647 mOverScrollGlow.releaseAll(); 6648 } 6649 } 6650 6651 private void cancelTouch() { 6652 // we also use mVelocityTracker == null to tell us that we are 6653 // not "moving around", so we can take the slower/prettier 6654 // mode in the drawing code 6655 if (mVelocityTracker != null) { 6656 mVelocityTracker.recycle(); 6657 mVelocityTracker = null; 6658 } 6659 6660 if ((mTouchMode == TOUCH_DRAG_MODE 6661 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6662 WebViewCore.resumePriority(); 6663 WebViewCore.resumeUpdatePicture(mWebViewCore); 6664 nativeSetIsScrolling(false); 6665 } 6666 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6667 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6668 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6669 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6670 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6671 removeTouchHighlight(); 6672 } 6673 mHeldMotionless = MOTIONLESS_TRUE; 6674 mTouchMode = TOUCH_DONE_MODE; 6675 nativeHideCursor(); 6676 } 6677 6678 @Override 6679 public boolean onGenericMotionEvent(MotionEvent event) { 6680 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6681 switch (event.getAction()) { 6682 case MotionEvent.ACTION_SCROLL: { 6683 final float vscroll; 6684 final float hscroll; 6685 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6686 vscroll = 0; 6687 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6688 } else { 6689 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6690 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6691 } 6692 if (hscroll != 0 || vscroll != 0) { 6693 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6694 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6695 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6696 return true; 6697 } 6698 } 6699 } 6700 } 6701 } 6702 return super.onGenericMotionEvent(event); 6703 } 6704 6705 private long mTrackballFirstTime = 0; 6706 private long mTrackballLastTime = 0; 6707 private float mTrackballRemainsX = 0.0f; 6708 private float mTrackballRemainsY = 0.0f; 6709 private int mTrackballXMove = 0; 6710 private int mTrackballYMove = 0; 6711 private boolean mSelectingText = false; 6712 private boolean mSelectionStarted = false; 6713 private boolean mExtendSelection = false; 6714 private boolean mDrawSelectionPointer = false; 6715 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6716 private static final int TRACKBALL_TIMEOUT = 200; 6717 private static final int TRACKBALL_WAIT = 100; 6718 private static final int TRACKBALL_SCALE = 400; 6719 private static final int TRACKBALL_SCROLL_COUNT = 5; 6720 private static final int TRACKBALL_MOVE_COUNT = 10; 6721 private static final int TRACKBALL_MULTIPLIER = 3; 6722 private static final int SELECT_CURSOR_OFFSET = 16; 6723 private static final int SELECT_SCROLL = 5; 6724 private int mSelectX = 0; 6725 private int mSelectY = 0; 6726 private boolean mFocusSizeChanged = false; 6727 private boolean mTrackballDown = false; 6728 private long mTrackballUpTime = 0; 6729 private long mLastCursorTime = 0; 6730 private Rect mLastCursorBounds; 6731 6732 // Set by default; BrowserActivity clears to interpret trackball data 6733 // directly for movement. Currently, the framework only passes 6734 // arrow key events, not trackball events, from one child to the next 6735 private boolean mMapTrackballToArrowKeys = true; 6736 6737 private DrawData mDelaySetPicture; 6738 private DrawData mLoadedPicture; 6739 6740 public void setMapTrackballToArrowKeys(boolean setMap) { 6741 checkThread(); 6742 mMapTrackballToArrowKeys = setMap; 6743 } 6744 6745 void resetTrackballTime() { 6746 mTrackballLastTime = 0; 6747 } 6748 6749 @Override 6750 public boolean onTrackballEvent(MotionEvent ev) { 6751 long time = ev.getEventTime(); 6752 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6753 if (ev.getY() > 0) pageDown(true); 6754 if (ev.getY() < 0) pageUp(true); 6755 return true; 6756 } 6757 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6758 if (mSelectingText) { 6759 return true; // discard press if copy in progress 6760 } 6761 mTrackballDown = true; 6762 if (mNativeClass == 0) { 6763 return false; 6764 } 6765 recordButtons(null, hasFocus() && hasWindowFocus(), true, true); 6766 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6767 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6768 nativeSelectBestAt(mLastCursorBounds); 6769 } 6770 if (DebugFlags.WEB_VIEW) { 6771 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6772 + " time=" + time 6773 + " mLastCursorTime=" + mLastCursorTime); 6774 } 6775 if (isInTouchMode()) requestFocusFromTouch(); 6776 return false; // let common code in onKeyDown at it 6777 } 6778 if (ev.getAction() == MotionEvent.ACTION_UP) { 6779 // LONG_PRESS_CENTER is set in common onKeyDown 6780 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6781 mTrackballDown = false; 6782 mTrackballUpTime = time; 6783 if (mSelectingText) { 6784 if (mExtendSelection) { 6785 copySelection(); 6786 selectionDone(); 6787 } else { 6788 mExtendSelection = true; 6789 nativeSetExtendSelection(); 6790 invalidate(); // draw the i-beam instead of the arrow 6791 } 6792 return true; // discard press if copy in progress 6793 } 6794 if (DebugFlags.WEB_VIEW) { 6795 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6796 + " time=" + time 6797 ); 6798 } 6799 return false; // let common code in onKeyUp at it 6800 } 6801 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6802 AccessibilityManager.getInstance(mContext).isEnabled()) { 6803 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6804 return false; 6805 } 6806 if (mTrackballDown) { 6807 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6808 return true; // discard move if trackball is down 6809 } 6810 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6811 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6812 return true; 6813 } 6814 // TODO: alternatively we can do panning as touch does 6815 switchOutDrawHistory(); 6816 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6817 if (DebugFlags.WEB_VIEW) { 6818 Log.v(LOGTAG, "onTrackballEvent time=" 6819 + time + " last=" + mTrackballLastTime); 6820 } 6821 mTrackballFirstTime = time; 6822 mTrackballXMove = mTrackballYMove = 0; 6823 } 6824 mTrackballLastTime = time; 6825 if (DebugFlags.WEB_VIEW) { 6826 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6827 } 6828 mTrackballRemainsX += ev.getX(); 6829 mTrackballRemainsY += ev.getY(); 6830 doTrackball(time, ev.getMetaState()); 6831 return true; 6832 } 6833 6834 void moveSelection(float xRate, float yRate) { 6835 if (mNativeClass == 0) 6836 return; 6837 int width = getViewWidth(); 6838 int height = getViewHeight(); 6839 mSelectX += xRate; 6840 mSelectY += yRate; 6841 int maxX = width + mScrollX; 6842 int maxY = height + mScrollY; 6843 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6844 , mSelectX)); 6845 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6846 , mSelectY)); 6847 if (DebugFlags.WEB_VIEW) { 6848 Log.v(LOGTAG, "moveSelection" 6849 + " mSelectX=" + mSelectX 6850 + " mSelectY=" + mSelectY 6851 + " mScrollX=" + mScrollX 6852 + " mScrollY=" + mScrollY 6853 + " xRate=" + xRate 6854 + " yRate=" + yRate 6855 ); 6856 } 6857 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6858 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6859 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6860 : 0; 6861 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6862 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6863 : 0; 6864 pinScrollBy(scrollX, scrollY, true, 0); 6865 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6866 requestRectangleOnScreen(select); 6867 invalidate(); 6868 } 6869 6870 private int scaleTrackballX(float xRate, int width) { 6871 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6872 int nextXMove = xMove; 6873 if (xMove > 0) { 6874 if (xMove > mTrackballXMove) { 6875 xMove -= mTrackballXMove; 6876 } 6877 } else if (xMove < mTrackballXMove) { 6878 xMove -= mTrackballXMove; 6879 } 6880 mTrackballXMove = nextXMove; 6881 return xMove; 6882 } 6883 6884 private int scaleTrackballY(float yRate, int height) { 6885 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6886 int nextYMove = yMove; 6887 if (yMove > 0) { 6888 if (yMove > mTrackballYMove) { 6889 yMove -= mTrackballYMove; 6890 } 6891 } else if (yMove < mTrackballYMove) { 6892 yMove -= mTrackballYMove; 6893 } 6894 mTrackballYMove = nextYMove; 6895 return yMove; 6896 } 6897 6898 private int keyCodeToSoundsEffect(int keyCode) { 6899 switch(keyCode) { 6900 case KeyEvent.KEYCODE_DPAD_UP: 6901 return SoundEffectConstants.NAVIGATION_UP; 6902 case KeyEvent.KEYCODE_DPAD_RIGHT: 6903 return SoundEffectConstants.NAVIGATION_RIGHT; 6904 case KeyEvent.KEYCODE_DPAD_DOWN: 6905 return SoundEffectConstants.NAVIGATION_DOWN; 6906 case KeyEvent.KEYCODE_DPAD_LEFT: 6907 return SoundEffectConstants.NAVIGATION_LEFT; 6908 } 6909 throw new IllegalArgumentException("keyCode must be one of " + 6910 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6911 "KEYCODE_DPAD_LEFT}."); 6912 } 6913 6914 private void doTrackball(long time, int metaState) { 6915 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6916 if (elapsed == 0) { 6917 elapsed = TRACKBALL_TIMEOUT; 6918 } 6919 float xRate = mTrackballRemainsX * 1000 / elapsed; 6920 float yRate = mTrackballRemainsY * 1000 / elapsed; 6921 int viewWidth = getViewWidth(); 6922 int viewHeight = getViewHeight(); 6923 if (mSelectingText) { 6924 if (!mDrawSelectionPointer) { 6925 // The last selection was made by touch, disabling drawing the 6926 // selection pointer. Allow the trackball to adjust the 6927 // position of the touch control. 6928 mSelectX = contentToViewX(nativeSelectionX()); 6929 mSelectY = contentToViewY(nativeSelectionY()); 6930 mDrawSelectionPointer = mExtendSelection = true; 6931 nativeSetExtendSelection(); 6932 } 6933 moveSelection(scaleTrackballX(xRate, viewWidth), 6934 scaleTrackballY(yRate, viewHeight)); 6935 mTrackballRemainsX = mTrackballRemainsY = 0; 6936 return; 6937 } 6938 float ax = Math.abs(xRate); 6939 float ay = Math.abs(yRate); 6940 float maxA = Math.max(ax, ay); 6941 if (DebugFlags.WEB_VIEW) { 6942 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6943 + " xRate=" + xRate 6944 + " yRate=" + yRate 6945 + " mTrackballRemainsX=" + mTrackballRemainsX 6946 + " mTrackballRemainsY=" + mTrackballRemainsY); 6947 } 6948 int width = mContentWidth - viewWidth; 6949 int height = mContentHeight - viewHeight; 6950 if (width < 0) width = 0; 6951 if (height < 0) height = 0; 6952 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6953 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6954 maxA = Math.max(ax, ay); 6955 int count = Math.max(0, (int) maxA); 6956 int oldScrollX = mScrollX; 6957 int oldScrollY = mScrollY; 6958 if (count > 0) { 6959 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6960 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6961 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6962 KeyEvent.KEYCODE_DPAD_RIGHT; 6963 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6964 if (DebugFlags.WEB_VIEW) { 6965 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6966 + " count=" + count 6967 + " mTrackballRemainsX=" + mTrackballRemainsX 6968 + " mTrackballRemainsY=" + mTrackballRemainsY); 6969 } 6970 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6971 for (int i = 0; i < count; i++) { 6972 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6973 } 6974 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6975 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6976 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6977 } 6978 mTrackballRemainsX = mTrackballRemainsY = 0; 6979 } 6980 if (count >= TRACKBALL_SCROLL_COUNT) { 6981 int xMove = scaleTrackballX(xRate, width); 6982 int yMove = scaleTrackballY(yRate, height); 6983 if (DebugFlags.WEB_VIEW) { 6984 Log.v(LOGTAG, "doTrackball pinScrollBy" 6985 + " count=" + count 6986 + " xMove=" + xMove + " yMove=" + yMove 6987 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6988 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6989 ); 6990 } 6991 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6992 xMove = 0; 6993 } 6994 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6995 yMove = 0; 6996 } 6997 if (xMove != 0 || yMove != 0) { 6998 pinScrollBy(xMove, yMove, true, 0); 6999 } 7000 } 7001 } 7002 7003 /** 7004 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7005 * @return Maximum horizontal scroll position within real content 7006 */ 7007 int computeMaxScrollX() { 7008 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7009 } 7010 7011 /** 7012 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7013 * @return Maximum vertical scroll position within real content 7014 */ 7015 int computeMaxScrollY() { 7016 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7017 - getViewHeightWithTitle(), 0); 7018 } 7019 7020 boolean updateScrollCoordinates(int x, int y) { 7021 int oldX = mScrollX; 7022 int oldY = mScrollY; 7023 mScrollX = x; 7024 mScrollY = y; 7025 if (oldX != mScrollX || oldY != mScrollY) { 7026 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7027 return true; 7028 } else { 7029 return false; 7030 } 7031 } 7032 7033 public void flingScroll(int vx, int vy) { 7034 checkThread(); 7035 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7036 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7037 invalidate(); 7038 } 7039 7040 private void doFling() { 7041 if (mVelocityTracker == null) { 7042 return; 7043 } 7044 int maxX = computeMaxScrollX(); 7045 int maxY = computeMaxScrollY(); 7046 7047 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7048 int vx = (int) mVelocityTracker.getXVelocity(); 7049 int vy = (int) mVelocityTracker.getYVelocity(); 7050 7051 int scrollX = mScrollX; 7052 int scrollY = mScrollY; 7053 int overscrollDistance = mOverscrollDistance; 7054 int overflingDistance = mOverflingDistance; 7055 7056 // Use the layer's scroll data if applicable. 7057 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7058 scrollX = mScrollingLayerRect.left; 7059 scrollY = mScrollingLayerRect.top; 7060 maxX = mScrollingLayerRect.right; 7061 maxY = mScrollingLayerRect.bottom; 7062 // No overscrolling for layers. 7063 overscrollDistance = overflingDistance = 0; 7064 } 7065 7066 if (mSnapScrollMode != SNAP_NONE) { 7067 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7068 vy = 0; 7069 } else { 7070 vx = 0; 7071 } 7072 } 7073 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7074 WebViewCore.resumePriority(); 7075 if (!mSelectingText) { 7076 WebViewCore.resumeUpdatePicture(mWebViewCore); 7077 } 7078 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7079 invalidate(); 7080 } 7081 return; 7082 } 7083 float currentVelocity = mScroller.getCurrVelocity(); 7084 float velocity = (float) Math.hypot(vx, vy); 7085 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7086 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7087 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7088 - Math.atan2(vy, vx))); 7089 final float circle = (float) (Math.PI) * 2.0f; 7090 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7091 vx += currentVelocity * mLastVelX / mLastVelocity; 7092 vy += currentVelocity * mLastVelY / mLastVelocity; 7093 velocity = (float) Math.hypot(vx, vy); 7094 if (DebugFlags.WEB_VIEW) { 7095 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7096 } 7097 } else if (DebugFlags.WEB_VIEW) { 7098 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7099 } 7100 } else if (DebugFlags.WEB_VIEW) { 7101 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7102 + " current=" + currentVelocity 7103 + " vx=" + vx + " vy=" + vy 7104 + " maxX=" + maxX + " maxY=" + maxY 7105 + " scrollX=" + scrollX + " scrollY=" + scrollY 7106 + " layer=" + mScrollingLayer); 7107 } 7108 7109 // Allow sloppy flings without overscrolling at the edges. 7110 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7111 vx = 0; 7112 } 7113 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7114 vy = 0; 7115 } 7116 7117 if (overscrollDistance < overflingDistance) { 7118 if ((vx > 0 && scrollX == -overscrollDistance) || 7119 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7120 vx = 0; 7121 } 7122 if ((vy > 0 && scrollY == -overscrollDistance) || 7123 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7124 vy = 0; 7125 } 7126 } 7127 7128 mLastVelX = vx; 7129 mLastVelY = vy; 7130 mLastVelocity = velocity; 7131 7132 // no horizontal overscroll if the content just fits 7133 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7134 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7135 // Duration is calculated based on velocity. With range boundaries and overscroll 7136 // we may not know how long the final animation will take. (Hence the deprecation 7137 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7138 // resumes during this effect we will take a performance hit. See computeScroll; 7139 // we resume webcore there when the animation is finished. 7140 final int time = mScroller.getDuration(); 7141 7142 // Suppress scrollbars for layer scrolling. 7143 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7144 awakenScrollBars(time); 7145 } 7146 7147 invalidate(); 7148 } 7149 7150 /** 7151 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7152 * in charge of installing this view to the view hierarchy. This view will 7153 * become visible when the user starts scrolling via touch and fade away if 7154 * the user does not interact with it. 7155 * <p/> 7156 * API version 3 introduces a built-in zoom mechanism that is shown 7157 * automatically by the MapView. This is the preferred approach for 7158 * showing the zoom UI. 7159 * 7160 * @deprecated The built-in zoom mechanism is preferred, see 7161 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7162 */ 7163 @Deprecated 7164 public View getZoomControls() { 7165 checkThread(); 7166 if (!getSettings().supportZoom()) { 7167 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7168 return null; 7169 } 7170 return mZoomManager.getExternalZoomPicker(); 7171 } 7172 7173 void dismissZoomControl() { 7174 mZoomManager.dismissZoomPicker(); 7175 } 7176 7177 float getDefaultZoomScale() { 7178 return mZoomManager.getDefaultScale(); 7179 } 7180 7181 /** 7182 * Return the overview scale of the WebView 7183 * @return The overview scale. 7184 */ 7185 float getZoomOverviewScale() { 7186 return mZoomManager.getZoomOverviewScale(); 7187 } 7188 7189 /** 7190 * @return TRUE if the WebView can be zoomed in. 7191 */ 7192 public boolean canZoomIn() { 7193 checkThread(); 7194 return mZoomManager.canZoomIn(); 7195 } 7196 7197 /** 7198 * @return TRUE if the WebView can be zoomed out. 7199 */ 7200 public boolean canZoomOut() { 7201 checkThread(); 7202 return mZoomManager.canZoomOut(); 7203 } 7204 7205 /** 7206 * Perform zoom in in the webview 7207 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7208 */ 7209 public boolean zoomIn() { 7210 checkThread(); 7211 return mZoomManager.zoomIn(); 7212 } 7213 7214 /** 7215 * Perform zoom out in the webview 7216 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7217 */ 7218 public boolean zoomOut() { 7219 checkThread(); 7220 return mZoomManager.zoomOut(); 7221 } 7222 7223 /** 7224 * This selects the best clickable target at mLastTouchX and mLastTouchY 7225 * and calls showCursorTimed on the native side 7226 */ 7227 private void updateSelection() { 7228 if (mNativeClass == 0) { 7229 return; 7230 } 7231 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7232 // mLastTouchX and mLastTouchY are the point in the current viewport 7233 int contentX = viewToContentX(mLastTouchX + mScrollX); 7234 int contentY = viewToContentY(mLastTouchY + mScrollY); 7235 int slop = viewToContentDimension(mNavSlop); 7236 Rect rect = new Rect(contentX - slop, contentY - slop, 7237 contentX + slop, contentY + slop); 7238 nativeSelectBestAt(rect); 7239 mInitialHitTestResult = hitTestResult(null); 7240 } 7241 7242 /** 7243 * Scroll the focused text field to match the WebTextView 7244 * @param xPercent New x position of the WebTextView from 0 to 1. 7245 */ 7246 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7247 if (!inEditingMode() || mWebViewCore == null) { 7248 return; 7249 } 7250 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7251 new Float(xPercent)); 7252 } 7253 7254 /** 7255 * Scroll the focused textarea vertically to match the WebTextView 7256 * @param y New y position of the WebTextView in view coordinates 7257 */ 7258 /* package */ void scrollFocusedTextInputY(int y) { 7259 if (!inEditingMode() || mWebViewCore == null) { 7260 return; 7261 } 7262 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7263 } 7264 7265 /** 7266 * Set our starting point and time for a drag from the WebTextView. 7267 */ 7268 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7269 if (!inEditingMode()) { 7270 return; 7271 } 7272 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7273 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7274 mLastTouchTime = eventTime; 7275 if (!mScroller.isFinished()) { 7276 abortAnimation(); 7277 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 7278 } 7279 mSnapScrollMode = SNAP_NONE; 7280 mVelocityTracker = VelocityTracker.obtain(); 7281 mTouchMode = TOUCH_DRAG_START_MODE; 7282 } 7283 7284 /** 7285 * Given a motion event from the WebTextView, set its location to our 7286 * coordinates, and handle the event. 7287 */ 7288 /*package*/ boolean textFieldDrag(MotionEvent event) { 7289 if (!inEditingMode()) { 7290 return false; 7291 } 7292 mDragFromTextInput = true; 7293 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7294 (float) (mWebTextView.getTop() - mScrollY)); 7295 boolean result = onTouchEvent(event); 7296 mDragFromTextInput = false; 7297 return result; 7298 } 7299 7300 /** 7301 * Due a touch up from a WebTextView. This will be handled by webkit to 7302 * change the selection. 7303 * @param event MotionEvent in the WebTextView's coordinates. 7304 */ 7305 /*package*/ void touchUpOnTextField(MotionEvent event) { 7306 if (!inEditingMode()) { 7307 return; 7308 } 7309 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7310 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7311 int slop = viewToContentDimension(mNavSlop); 7312 nativeMotionUp(x, y, slop); 7313 } 7314 7315 /** 7316 * Called when pressing the center key or trackball on a textfield. 7317 */ 7318 /*package*/ void centerKeyPressOnTextField() { 7319 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7320 nativeCursorNodePointer()); 7321 } 7322 7323 private void doShortPress() { 7324 if (mNativeClass == 0) { 7325 return; 7326 } 7327 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7328 return; 7329 } 7330 mTouchMode = TOUCH_DONE_MODE; 7331 updateSelection(); 7332 switchOutDrawHistory(); 7333 // mLastTouchX and mLastTouchY are the point in the current viewport 7334 int contentX = viewToContentX(mLastTouchX + mScrollX); 7335 int contentY = viewToContentY(mLastTouchY + mScrollY); 7336 int slop = viewToContentDimension(mNavSlop); 7337 if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) { 7338 // set mTouchHighlightRequested to 0 to cause an immediate 7339 // drawing of the touch rings 7340 mTouchHighlightRequested = 0; 7341 invalidate(mTouchHighlightRegion.getBounds()); 7342 mPrivateHandler.postDelayed(new Runnable() { 7343 @Override 7344 public void run() { 7345 removeTouchHighlight(); 7346 } 7347 }, ViewConfiguration.getPressedStateDuration()); 7348 } 7349 if (getSettings().supportTouchOnly()) { 7350 removeTouchHighlight(); 7351 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7352 // use "0" as generation id to inform WebKit to use the same x/y as 7353 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7354 touchUpData.mMoveGeneration = 0; 7355 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7356 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7357 WebViewCore.MotionUpData motionUpData = new WebViewCore 7358 .MotionUpData(); 7359 motionUpData.mFrame = nativeCacheHitFramePointer(); 7360 motionUpData.mNode = nativeCacheHitNodePointer(); 7361 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7362 motionUpData.mX = contentX; 7363 motionUpData.mY = contentY; 7364 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7365 motionUpData); 7366 } else { 7367 doMotionUp(contentX, contentY); 7368 } 7369 } 7370 7371 private void doMotionUp(int contentX, int contentY) { 7372 int slop = viewToContentDimension(mNavSlop); 7373 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7374 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7375 } 7376 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7377 playSoundEffect(SoundEffectConstants.CLICK); 7378 } 7379 } 7380 7381 /** 7382 * Returns plugin bounds if x/y in content coordinates corresponds to a 7383 * plugin. Otherwise a NULL rectangle is returned. 7384 */ 7385 Rect getPluginBounds(int x, int y) { 7386 int slop = viewToContentDimension(mNavSlop); 7387 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7388 return nativeCacheHitNodeBounds(); 7389 } else { 7390 return null; 7391 } 7392 } 7393 7394 /* 7395 * Return true if the rect (e.g. plugin) is fully visible and maximized 7396 * inside the WebView. 7397 */ 7398 boolean isRectFitOnScreen(Rect rect) { 7399 final int rectWidth = rect.width(); 7400 final int rectHeight = rect.height(); 7401 final int viewWidth = getViewWidth(); 7402 final int viewHeight = getViewHeightWithTitle(); 7403 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7404 scale = mZoomManager.computeScaleWithLimits(scale); 7405 return !mZoomManager.willScaleTriggerZoom(scale) 7406 && contentToViewX(rect.left) >= mScrollX 7407 && contentToViewX(rect.right) <= mScrollX + viewWidth 7408 && contentToViewY(rect.top) >= mScrollY 7409 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7410 } 7411 7412 /* 7413 * Maximize and center the rectangle, specified in the document coordinate 7414 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7415 * animated scroll to center it. If the zoom needs to be changed, find the 7416 * zoom center and do a smooth zoom transition. The rect is in document 7417 * coordinates 7418 */ 7419 void centerFitRect(Rect rect) { 7420 final int rectWidth = rect.width(); 7421 final int rectHeight = rect.height(); 7422 final int viewWidth = getViewWidth(); 7423 final int viewHeight = getViewHeightWithTitle(); 7424 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7425 / rectHeight); 7426 scale = mZoomManager.computeScaleWithLimits(scale); 7427 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7428 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7429 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7430 true, 0); 7431 } else { 7432 float actualScale = mZoomManager.getScale(); 7433 float oldScreenX = rect.left * actualScale - mScrollX; 7434 float rectViewX = rect.left * scale; 7435 float rectViewWidth = rectWidth * scale; 7436 float newMaxWidth = mContentWidth * scale; 7437 float newScreenX = (viewWidth - rectViewWidth) / 2; 7438 // pin the newX to the WebView 7439 if (newScreenX > rectViewX) { 7440 newScreenX = rectViewX; 7441 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7442 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7443 } 7444 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7445 / (scale - actualScale); 7446 float oldScreenY = rect.top * actualScale + getTitleHeight() 7447 - mScrollY; 7448 float rectViewY = rect.top * scale + getTitleHeight(); 7449 float rectViewHeight = rectHeight * scale; 7450 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7451 float newScreenY = (viewHeight - rectViewHeight) / 2; 7452 // pin the newY to the WebView 7453 if (newScreenY > rectViewY) { 7454 newScreenY = rectViewY; 7455 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7456 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7457 } 7458 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7459 / (scale - actualScale); 7460 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7461 mZoomManager.startZoomAnimation(scale, false); 7462 } 7463 } 7464 7465 // Called by JNI to handle a touch on a node representing an email address, 7466 // address, or phone number 7467 private void overrideLoading(String url) { 7468 mCallbackProxy.uiOverrideUrlLoading(url); 7469 } 7470 7471 @Override 7472 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7473 // FIXME: If a subwindow is showing find, and the user touches the 7474 // background window, it can steal focus. 7475 if (mFindIsUp) return false; 7476 boolean result = false; 7477 if (inEditingMode()) { 7478 result = mWebTextView.requestFocus(direction, 7479 previouslyFocusedRect); 7480 } else { 7481 result = super.requestFocus(direction, previouslyFocusedRect); 7482 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7483 // For cases such as GMail, where we gain focus from a direction, 7484 // we want to move to the first available link. 7485 // FIXME: If there are no visible links, we may not want to 7486 int fakeKeyDirection = 0; 7487 switch(direction) { 7488 case View.FOCUS_UP: 7489 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7490 break; 7491 case View.FOCUS_DOWN: 7492 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7493 break; 7494 case View.FOCUS_LEFT: 7495 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7496 break; 7497 case View.FOCUS_RIGHT: 7498 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7499 break; 7500 default: 7501 return result; 7502 } 7503 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7504 navHandledKey(fakeKeyDirection, 1, true, 0); 7505 } 7506 } 7507 } 7508 return result; 7509 } 7510 7511 @Override 7512 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7513 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7514 7515 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7516 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7517 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7518 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7519 7520 int measuredHeight = heightSize; 7521 int measuredWidth = widthSize; 7522 7523 // Grab the content size from WebViewCore. 7524 int contentHeight = contentToViewDimension(mContentHeight); 7525 int contentWidth = contentToViewDimension(mContentWidth); 7526 7527// Log.d(LOGTAG, "------- measure " + heightMode); 7528 7529 if (heightMode != MeasureSpec.EXACTLY) { 7530 mHeightCanMeasure = true; 7531 measuredHeight = contentHeight; 7532 if (heightMode == MeasureSpec.AT_MOST) { 7533 // If we are larger than the AT_MOST height, then our height can 7534 // no longer be measured and we should scroll internally. 7535 if (measuredHeight > heightSize) { 7536 measuredHeight = heightSize; 7537 mHeightCanMeasure = false; 7538 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7539 } 7540 } 7541 } else { 7542 mHeightCanMeasure = false; 7543 } 7544 if (mNativeClass != 0) { 7545 nativeSetHeightCanMeasure(mHeightCanMeasure); 7546 } 7547 // For the width, always use the given size unless unspecified. 7548 if (widthMode == MeasureSpec.UNSPECIFIED) { 7549 mWidthCanMeasure = true; 7550 measuredWidth = contentWidth; 7551 } else { 7552 if (measuredWidth < contentWidth) { 7553 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7554 } 7555 mWidthCanMeasure = false; 7556 } 7557 7558 synchronized (this) { 7559 setMeasuredDimension(measuredWidth, measuredHeight); 7560 } 7561 } 7562 7563 @Override 7564 public boolean requestChildRectangleOnScreen(View child, 7565 Rect rect, 7566 boolean immediate) { 7567 if (mNativeClass == 0) { 7568 return false; 7569 } 7570 // don't scroll while in zoom animation. When it is done, we will adjust 7571 // the necessary components (e.g., WebTextView if it is in editing mode) 7572 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7573 return false; 7574 } 7575 7576 rect.offset(child.getLeft() - child.getScrollX(), 7577 child.getTop() - child.getScrollY()); 7578 7579 Rect content = new Rect(viewToContentX(mScrollX), 7580 viewToContentY(mScrollY), 7581 viewToContentX(mScrollX + getWidth() 7582 - getVerticalScrollbarWidth()), 7583 viewToContentY(mScrollY + getViewHeightWithTitle())); 7584 content = nativeSubtractLayers(content); 7585 int screenTop = contentToViewY(content.top); 7586 int screenBottom = contentToViewY(content.bottom); 7587 int height = screenBottom - screenTop; 7588 int scrollYDelta = 0; 7589 7590 if (rect.bottom > screenBottom) { 7591 int oneThirdOfScreenHeight = height / 3; 7592 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7593 // If the rectangle is too tall to fit in the bottom two thirds 7594 // of the screen, place it at the top. 7595 scrollYDelta = rect.top - screenTop; 7596 } else { 7597 // If the rectangle will still fit on screen, we want its 7598 // top to be in the top third of the screen. 7599 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7600 } 7601 } else if (rect.top < screenTop) { 7602 scrollYDelta = rect.top - screenTop; 7603 } 7604 7605 int screenLeft = contentToViewX(content.left); 7606 int screenRight = contentToViewX(content.right); 7607 int width = screenRight - screenLeft; 7608 int scrollXDelta = 0; 7609 7610 if (rect.right > screenRight && rect.left > screenLeft) { 7611 if (rect.width() > width) { 7612 scrollXDelta += (rect.left - screenLeft); 7613 } else { 7614 scrollXDelta += (rect.right - screenRight); 7615 } 7616 } else if (rect.left < screenLeft) { 7617 scrollXDelta -= (screenLeft - rect.left); 7618 } 7619 7620 if ((scrollYDelta | scrollXDelta) != 0) { 7621 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7622 } 7623 7624 return false; 7625 } 7626 7627 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7628 String replace, int newStart, int newEnd) { 7629 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7630 arg.mReplace = replace; 7631 arg.mNewStart = newStart; 7632 arg.mNewEnd = newEnd; 7633 mTextGeneration++; 7634 arg.mTextGeneration = mTextGeneration; 7635 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7636 } 7637 7638 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7639 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7640 arg.mEvent = event; 7641 arg.mCurrentText = currentText; 7642 // Increase our text generation number, and pass it to webcore thread 7643 mTextGeneration++; 7644 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7645 // WebKit's document state is not saved until about to leave the page. 7646 // To make sure the host application, like Browser, has the up to date 7647 // document state when it goes to background, we force to save the 7648 // document state. 7649 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7650 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7651 cursorData(), 1000); 7652 } 7653 7654 /** 7655 * @hide 7656 */ 7657 public synchronized WebViewCore getWebViewCore() { 7658 return mWebViewCore; 7659 } 7660 7661 /** 7662 * Used only by TouchEventQueue to store pending touch events. 7663 */ 7664 private static class QueuedTouch { 7665 long mSequence; 7666 MotionEvent mEvent; // Optional 7667 TouchEventData mTed; // Optional 7668 7669 QueuedTouch mNext; 7670 7671 public QueuedTouch set(TouchEventData ted) { 7672 mSequence = ted.mSequence; 7673 mTed = ted; 7674 mEvent = null; 7675 mNext = null; 7676 return this; 7677 } 7678 7679 public QueuedTouch set(MotionEvent ev, long sequence) { 7680 mEvent = MotionEvent.obtain(ev); 7681 mSequence = sequence; 7682 mTed = null; 7683 mNext = null; 7684 return this; 7685 } 7686 7687 public QueuedTouch add(QueuedTouch other) { 7688 if (other.mSequence < mSequence) { 7689 other.mNext = this; 7690 return other; 7691 } 7692 7693 QueuedTouch insertAt = this; 7694 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7695 insertAt = insertAt.mNext; 7696 } 7697 other.mNext = insertAt.mNext; 7698 insertAt.mNext = other; 7699 return this; 7700 } 7701 } 7702 7703 /** 7704 * WebView handles touch events asynchronously since some events must be passed to WebKit 7705 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7706 * of which path they take to ensure that no events are ever processed out of order 7707 * by WebView. 7708 */ 7709 private class TouchEventQueue { 7710 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7711 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7712 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7713 7714 // Events waiting to be processed. 7715 private QueuedTouch mTouchEventQueue; 7716 7717 // Known events that are waiting on a response before being enqueued. 7718 private QueuedTouch mPreQueue; 7719 7720 // Pool of QueuedTouch objects saved for later use. 7721 private QueuedTouch mQueuedTouchRecycleBin; 7722 private int mQueuedTouchRecycleCount; 7723 7724 private long mLastEventTime = Long.MAX_VALUE; 7725 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7726 7727 // milliseconds until we abandon hope of getting all of a previous gesture 7728 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7729 7730 private QueuedTouch obtainQueuedTouch() { 7731 if (mQueuedTouchRecycleBin != null) { 7732 QueuedTouch result = mQueuedTouchRecycleBin; 7733 mQueuedTouchRecycleBin = result.mNext; 7734 mQueuedTouchRecycleCount--; 7735 return result; 7736 } 7737 return new QueuedTouch(); 7738 } 7739 7740 /** 7741 * Allow events with any currently missing sequence numbers to be skipped in processing. 7742 */ 7743 public void ignoreCurrentlyMissingEvents() { 7744 mIgnoreUntilSequence = mNextTouchSequence; 7745 7746 // Run any events we have available and complete, pre-queued or otherwise. 7747 runQueuedAndPreQueuedEvents(); 7748 } 7749 7750 private void runQueuedAndPreQueuedEvents() { 7751 QueuedTouch qd = mPreQueue; 7752 boolean fromPreQueue = true; 7753 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7754 handleQueuedTouch(qd); 7755 QueuedTouch recycleMe = qd; 7756 if (fromPreQueue) { 7757 mPreQueue = qd.mNext; 7758 } else { 7759 mTouchEventQueue = qd.mNext; 7760 } 7761 recycleQueuedTouch(recycleMe); 7762 mLastHandledTouchSequence++; 7763 7764 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7765 long nextQueued = mTouchEventQueue != null ? 7766 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7767 fromPreQueue = nextPre < nextQueued; 7768 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7769 } 7770 } 7771 7772 /** 7773 * Add a TouchEventData to the pre-queue. 7774 * 7775 * An event in the pre-queue is an event that we know about that 7776 * has been sent to webkit, but that we haven't received back and 7777 * enqueued into the normal touch queue yet. If webkit ever times 7778 * out and we need to ignore currently missing events, we'll run 7779 * events from the pre-queue to patch the holes. 7780 * 7781 * @param ted TouchEventData to pre-queue 7782 */ 7783 public void preQueueTouchEventData(TouchEventData ted) { 7784 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7785 if (mPreQueue == null) { 7786 mPreQueue = newTouch; 7787 } else { 7788 QueuedTouch insertionPoint = mPreQueue; 7789 while (insertionPoint.mNext != null && 7790 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7791 insertionPoint = insertionPoint.mNext; 7792 } 7793 newTouch.mNext = insertionPoint.mNext; 7794 insertionPoint.mNext = newTouch; 7795 } 7796 } 7797 7798 private void recycleQueuedTouch(QueuedTouch qd) { 7799 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7800 qd.mNext = mQueuedTouchRecycleBin; 7801 mQueuedTouchRecycleBin = qd; 7802 mQueuedTouchRecycleCount++; 7803 } 7804 } 7805 7806 /** 7807 * Reset the touch event queue. This will dump any pending events 7808 * and reset the sequence numbering. 7809 */ 7810 public void reset() { 7811 mNextTouchSequence = Long.MIN_VALUE + 1; 7812 mLastHandledTouchSequence = Long.MIN_VALUE; 7813 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7814 while (mTouchEventQueue != null) { 7815 QueuedTouch recycleMe = mTouchEventQueue; 7816 mTouchEventQueue = mTouchEventQueue.mNext; 7817 recycleQueuedTouch(recycleMe); 7818 } 7819 while (mPreQueue != null) { 7820 QueuedTouch recycleMe = mPreQueue; 7821 mPreQueue = mPreQueue.mNext; 7822 recycleQueuedTouch(recycleMe); 7823 } 7824 } 7825 7826 /** 7827 * Return the next valid sequence number for tagging incoming touch events. 7828 * @return The next touch event sequence number 7829 */ 7830 public long nextTouchSequence() { 7831 return mNextTouchSequence++; 7832 } 7833 7834 /** 7835 * Enqueue a touch event in the form of TouchEventData. 7836 * The sequence number will be read from the mSequence field of the argument. 7837 * 7838 * If the touch event's sequence number is the next in line to be processed, it will 7839 * be handled before this method returns. Any subsequent events that have already 7840 * been queued will also be processed in their proper order. 7841 * 7842 * @param ted Touch data to be processed in order. 7843 * @return true if the event was processed before returning, false if it was just enqueued. 7844 */ 7845 public boolean enqueueTouchEvent(TouchEventData ted) { 7846 // Remove from the pre-queue if present 7847 QueuedTouch preQueue = mPreQueue; 7848 if (preQueue != null) { 7849 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7850 // if it was present in the pre-queue, and removed from the pre-queue itself. 7851 if (preQueue.mSequence == ted.mSequence) { 7852 mPreQueue = preQueue.mNext; 7853 } else { 7854 QueuedTouch prev = preQueue; 7855 preQueue = null; 7856 while (prev.mNext != null) { 7857 if (prev.mNext.mSequence == ted.mSequence) { 7858 preQueue = prev.mNext; 7859 prev.mNext = preQueue.mNext; 7860 break; 7861 } else { 7862 prev = prev.mNext; 7863 } 7864 } 7865 } 7866 } 7867 7868 if (ted.mSequence < mLastHandledTouchSequence) { 7869 // Stale event and we already moved on; drop it. (Should not be common.) 7870 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7871 " received from webcore; ignoring"); 7872 return false; 7873 } 7874 7875 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7876 return false; 7877 } 7878 7879 // dropStaleGestures above might have fast-forwarded us to 7880 // an event we have already. 7881 runNextQueuedEvents(); 7882 7883 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7884 if (preQueue != null) { 7885 recycleQueuedTouch(preQueue); 7886 preQueue = null; 7887 } 7888 handleQueuedTouchEventData(ted); 7889 7890 mLastHandledTouchSequence++; 7891 7892 // Do we have any more? Run them if so. 7893 runNextQueuedEvents(); 7894 } else { 7895 // Reuse the pre-queued object if we had it. 7896 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 7897 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7898 } 7899 return true; 7900 } 7901 7902 /** 7903 * Enqueue a touch event in the form of a MotionEvent from the framework. 7904 * 7905 * If the touch event's sequence number is the next in line to be processed, it will 7906 * be handled before this method returns. Any subsequent events that have already 7907 * been queued will also be processed in their proper order. 7908 * 7909 * @param ev MotionEvent to be processed in order 7910 */ 7911 public void enqueueTouchEvent(MotionEvent ev) { 7912 final long sequence = nextTouchSequence(); 7913 7914 if (dropStaleGestures(ev, sequence)) { 7915 return; 7916 } 7917 7918 // dropStaleGestures above might have fast-forwarded us to 7919 // an event we have already. 7920 runNextQueuedEvents(); 7921 7922 if (mLastHandledTouchSequence + 1 == sequence) { 7923 handleQueuedMotionEvent(ev); 7924 7925 mLastHandledTouchSequence++; 7926 7927 // Do we have any more? Run them if so. 7928 runNextQueuedEvents(); 7929 } else { 7930 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7931 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7932 } 7933 } 7934 7935 private void runNextQueuedEvents() { 7936 QueuedTouch qd = mTouchEventQueue; 7937 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7938 handleQueuedTouch(qd); 7939 QueuedTouch recycleMe = qd; 7940 qd = qd.mNext; 7941 recycleQueuedTouch(recycleMe); 7942 mLastHandledTouchSequence++; 7943 } 7944 mTouchEventQueue = qd; 7945 } 7946 7947 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7948 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7949 // This is to make sure that we don't attempt to process a tap 7950 // or long press when webkit takes too long to get back to us. 7951 // The movement will be properly confirmed when we process the 7952 // enqueued event later. 7953 final int dx = Math.round(ev.getX()) - mLastTouchX; 7954 final int dy = Math.round(ev.getY()) - mLastTouchY; 7955 if (dx * dx + dy * dy > mTouchSlopSquare) { 7956 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7957 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7958 } 7959 } 7960 7961 if (mTouchEventQueue == null) { 7962 return sequence <= mLastHandledTouchSequence; 7963 } 7964 7965 // If we have a new down event and it's been a while since the last event 7966 // we saw, catch up as best we can and keep going. 7967 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 7968 long eventTime = ev.getEventTime(); 7969 long lastHandledEventTime = mLastEventTime; 7970 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 7971 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7972 "Catching up."); 7973 runQueuedAndPreQueuedEvents(); 7974 7975 // Drop leftovers that we truly don't have. 7976 QueuedTouch qd = mTouchEventQueue; 7977 while (qd != null && qd.mSequence < sequence) { 7978 QueuedTouch recycleMe = qd; 7979 qd = qd.mNext; 7980 recycleQueuedTouch(recycleMe); 7981 } 7982 mTouchEventQueue = qd; 7983 mLastHandledTouchSequence = sequence - 1; 7984 } 7985 } 7986 7987 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 7988 QueuedTouch qd = mTouchEventQueue; 7989 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7990 QueuedTouch recycleMe = qd; 7991 qd = qd.mNext; 7992 recycleQueuedTouch(recycleMe); 7993 } 7994 mTouchEventQueue = qd; 7995 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 7996 } 7997 7998 if (mPreQueue != null) { 7999 // Drop stale prequeued events 8000 QueuedTouch qd = mPreQueue; 8001 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8002 QueuedTouch recycleMe = qd; 8003 qd = qd.mNext; 8004 recycleQueuedTouch(recycleMe); 8005 } 8006 mPreQueue = qd; 8007 } 8008 8009 return sequence <= mLastHandledTouchSequence; 8010 } 8011 8012 private void handleQueuedTouch(QueuedTouch qt) { 8013 if (qt.mTed != null) { 8014 handleQueuedTouchEventData(qt.mTed); 8015 } else { 8016 handleQueuedMotionEvent(qt.mEvent); 8017 qt.mEvent.recycle(); 8018 } 8019 } 8020 8021 private void handleQueuedMotionEvent(MotionEvent ev) { 8022 mLastEventTime = ev.getEventTime(); 8023 int action = ev.getActionMasked(); 8024 if (ev.getPointerCount() > 1) { // Multi-touch 8025 handleMultiTouchInWebView(ev); 8026 } else { 8027 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8028 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8029 // ScaleGestureDetector needs a consistent event stream to operate properly. 8030 // It won't take any action with fewer than two pointers, but it needs to 8031 // update internal bookkeeping state. 8032 detector.onTouchEvent(ev); 8033 } 8034 8035 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8036 } 8037 } 8038 8039 private void handleQueuedTouchEventData(TouchEventData ted) { 8040 if (ted.mMotionEvent != null) { 8041 mLastEventTime = ted.mMotionEvent.getEventTime(); 8042 } 8043 if (!ted.mReprocess) { 8044 if (ted.mAction == MotionEvent.ACTION_DOWN 8045 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8046 // if prevent default is called from WebCore, UI 8047 // will not handle the rest of the touch events any 8048 // more. 8049 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8050 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8051 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8052 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8053 // the return for the first ACTION_MOVE will decide 8054 // whether UI will handle touch or not. Currently no 8055 // support for alternating prevent default 8056 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8057 : PREVENT_DEFAULT_NO; 8058 } 8059 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8060 mTouchHighlightRegion.setEmpty(); 8061 } 8062 } else { 8063 if (ted.mPoints.length > 1) { // multi-touch 8064 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8065 mPreventDefault = PREVENT_DEFAULT_NO; 8066 handleMultiTouchInWebView(ted.mMotionEvent); 8067 } else { 8068 mPreventDefault = PREVENT_DEFAULT_YES; 8069 } 8070 return; 8071 } 8072 8073 // prevent default is not called in WebCore, so the 8074 // message needs to be reprocessed in UI 8075 if (!ted.mNativeResult) { 8076 // Following is for single touch. 8077 switch (ted.mAction) { 8078 case MotionEvent.ACTION_DOWN: 8079 mLastDeferTouchX = ted.mPointsInView[0].x; 8080 mLastDeferTouchY = ted.mPointsInView[0].y; 8081 mDeferTouchMode = TOUCH_INIT_MODE; 8082 break; 8083 case MotionEvent.ACTION_MOVE: { 8084 // no snapping in defer process 8085 int x = ted.mPointsInView[0].x; 8086 int y = ted.mPointsInView[0].y; 8087 8088 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8089 mDeferTouchMode = TOUCH_DRAG_MODE; 8090 mLastDeferTouchX = x; 8091 mLastDeferTouchY = y; 8092 startScrollingLayer(x, y); 8093 startDrag(); 8094 } 8095 int deltaX = pinLocX((int) (mScrollX 8096 + mLastDeferTouchX - x)) 8097 - mScrollX; 8098 int deltaY = pinLocY((int) (mScrollY 8099 + mLastDeferTouchY - y)) 8100 - mScrollY; 8101 doDrag(deltaX, deltaY); 8102 if (deltaX != 0) mLastDeferTouchX = x; 8103 if (deltaY != 0) mLastDeferTouchY = y; 8104 break; 8105 } 8106 case MotionEvent.ACTION_UP: 8107 case MotionEvent.ACTION_CANCEL: 8108 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8109 // no fling in defer process 8110 mScroller.springBack(mScrollX, mScrollY, 0, 8111 computeMaxScrollX(), 0, 8112 computeMaxScrollY()); 8113 invalidate(); 8114 WebViewCore.resumePriority(); 8115 WebViewCore.resumeUpdatePicture(mWebViewCore); 8116 } 8117 mDeferTouchMode = TOUCH_DONE_MODE; 8118 break; 8119 case WebViewCore.ACTION_DOUBLETAP: 8120 // doDoubleTap() needs mLastTouchX/Y as anchor 8121 mLastDeferTouchX = ted.mPointsInView[0].x; 8122 mLastDeferTouchY = ted.mPointsInView[0].y; 8123 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8124 mDeferTouchMode = TOUCH_DONE_MODE; 8125 break; 8126 case WebViewCore.ACTION_LONGPRESS: 8127 HitTestResult hitTest = getHitTestResult(); 8128 if (hitTest != null && hitTest.mType 8129 != HitTestResult.UNKNOWN_TYPE) { 8130 performLongClick(); 8131 } 8132 mDeferTouchMode = TOUCH_DONE_MODE; 8133 break; 8134 } 8135 } 8136 } 8137 } 8138 } 8139 8140 //------------------------------------------------------------------------- 8141 // Methods can be called from a separate thread, like WebViewCore 8142 // If it needs to call the View system, it has to send message. 8143 //------------------------------------------------------------------------- 8144 8145 /** 8146 * General handler to receive message coming from webkit thread 8147 */ 8148 class PrivateHandler extends Handler { 8149 @Override 8150 public void handleMessage(Message msg) { 8151 // exclude INVAL_RECT_MSG_ID since it is frequently output 8152 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8153 if (msg.what >= FIRST_PRIVATE_MSG_ID 8154 && msg.what <= LAST_PRIVATE_MSG_ID) { 8155 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8156 - FIRST_PRIVATE_MSG_ID]); 8157 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8158 && msg.what <= LAST_PACKAGE_MSG_ID) { 8159 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8160 - FIRST_PACKAGE_MSG_ID]); 8161 } else { 8162 Log.v(LOGTAG, Integer.toString(msg.what)); 8163 } 8164 } 8165 if (mWebViewCore == null) { 8166 // after WebView's destroy() is called, skip handling messages. 8167 return; 8168 } 8169 if (mBlockWebkitViewMessages 8170 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8171 // Blocking messages from webkit 8172 return; 8173 } 8174 switch (msg.what) { 8175 case REMEMBER_PASSWORD: { 8176 mDatabase.setUsernamePassword( 8177 msg.getData().getString("host"), 8178 msg.getData().getString("username"), 8179 msg.getData().getString("password")); 8180 ((Message) msg.obj).sendToTarget(); 8181 break; 8182 } 8183 case NEVER_REMEMBER_PASSWORD: { 8184 mDatabase.setUsernamePassword( 8185 msg.getData().getString("host"), null, null); 8186 ((Message) msg.obj).sendToTarget(); 8187 break; 8188 } 8189 case PREVENT_DEFAULT_TIMEOUT: { 8190 // if timeout happens, cancel it so that it won't block UI 8191 // to continue handling touch events 8192 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8193 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8194 || (msg.arg1 == MotionEvent.ACTION_MOVE 8195 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8196 cancelWebCoreTouchEvent( 8197 viewToContentX(mLastTouchX + mScrollX), 8198 viewToContentY(mLastTouchY + mScrollY), 8199 true); 8200 } 8201 break; 8202 } 8203 case SCROLL_SELECT_TEXT: { 8204 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8205 mSentAutoScrollMessage = false; 8206 break; 8207 } 8208 if (mScrollingLayer == 0) { 8209 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8210 } else { 8211 mScrollingLayerRect.left += mAutoScrollX; 8212 mScrollingLayerRect.top += mAutoScrollY; 8213 nativeScrollLayer(mScrollingLayer, 8214 mScrollingLayerRect.left, 8215 mScrollingLayerRect.top); 8216 invalidate(); 8217 } 8218 sendEmptyMessageDelayed( 8219 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8220 break; 8221 } 8222 case UPDATE_SELECTION: { 8223 if (mTouchMode == TOUCH_INIT_MODE 8224 || mTouchMode == TOUCH_SHORTPRESS_MODE 8225 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8226 updateSelection(); 8227 } 8228 break; 8229 } 8230 case SWITCH_TO_SHORTPRESS: { 8231 mInitialHitTestResult = null; // set by updateSelection() 8232 if (mTouchMode == TOUCH_INIT_MODE) { 8233 if (!getSettings().supportTouchOnly() 8234 && mPreventDefault != PREVENT_DEFAULT_YES) { 8235 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8236 updateSelection(); 8237 } else { 8238 // set to TOUCH_SHORTPRESS_MODE so that it won't 8239 // trigger double tap any more 8240 mTouchMode = TOUCH_SHORTPRESS_MODE; 8241 } 8242 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8243 mTouchMode = TOUCH_DONE_MODE; 8244 } 8245 break; 8246 } 8247 case SWITCH_TO_LONGPRESS: { 8248 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 8249 removeTouchHighlight(); 8250 } 8251 if (inFullScreenMode() || mDeferTouchProcess) { 8252 TouchEventData ted = new TouchEventData(); 8253 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8254 ted.mIds = new int[1]; 8255 ted.mIds[0] = 0; 8256 ted.mPoints = new Point[1]; 8257 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8258 viewToContentY(mLastTouchY + mScrollY)); 8259 ted.mPointsInView = new Point[1]; 8260 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8261 // metaState for long press is tricky. Should it be the 8262 // state when the press started or when the press was 8263 // released? Or some intermediary key state? For 8264 // simplicity for now, we don't set it. 8265 ted.mMetaState = 0; 8266 ted.mReprocess = mDeferTouchProcess; 8267 ted.mNativeLayer = nativeScrollableLayer( 8268 ted.mPoints[0].x, ted.mPoints[0].y, 8269 ted.mNativeLayerRect, null); 8270 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8271 mTouchEventQueue.preQueueTouchEventData(ted); 8272 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8273 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8274 mTouchMode = TOUCH_DONE_MODE; 8275 performLongClick(); 8276 } 8277 break; 8278 } 8279 case RELEASE_SINGLE_TAP: { 8280 doShortPress(); 8281 break; 8282 } 8283 case SCROLL_TO_MSG_ID: { 8284 // arg1 = animate, arg2 = onlyIfImeIsShowing 8285 // obj = Point(x, y) 8286 if (msg.arg2 == 1) { 8287 // This scroll is intended to bring the textfield into 8288 // view, but is only necessary if the IME is showing 8289 InputMethodManager imm = InputMethodManager.peekInstance(); 8290 if (imm == null || !imm.isAcceptingText() 8291 || (!imm.isActive(WebView.this) && (!inEditingMode() 8292 || !imm.isActive(mWebTextView)))) { 8293 break; 8294 } 8295 } 8296 final Point p = (Point) msg.obj; 8297 if (msg.arg1 == 1) { 8298 spawnContentScrollTo(p.x, p.y); 8299 } else { 8300 setContentScrollTo(p.x, p.y); 8301 } 8302 break; 8303 } 8304 case UPDATE_ZOOM_RANGE: { 8305 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8306 // mScrollX contains the new minPrefWidth 8307 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8308 break; 8309 } 8310 case REPLACE_BASE_CONTENT: { 8311 nativeReplaceBaseContent(msg.arg1); 8312 break; 8313 } 8314 case NEW_PICTURE_MSG_ID: { 8315 // called for new content 8316 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8317 setNewPicture(draw, true); 8318 break; 8319 } 8320 case WEBCORE_INITIALIZED_MSG_ID: 8321 // nativeCreate sets mNativeClass to a non-zero value 8322 String drawableDir = BrowserFrame.getRawResFilename( 8323 BrowserFrame.DRAWABLEDIR, mContext); 8324 nativeCreate(msg.arg1, drawableDir); 8325 if (mDelaySetPicture != null) { 8326 setNewPicture(mDelaySetPicture, true); 8327 mDelaySetPicture = null; 8328 } 8329 break; 8330 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8331 // Make sure that the textfield is currently focused 8332 // and representing the same node as the pointer. 8333 if (inEditingMode() && 8334 mWebTextView.isSameTextField(msg.arg1)) { 8335 if (msg.arg2 == mTextGeneration) { 8336 String text = (String) msg.obj; 8337 if (null == text) { 8338 text = ""; 8339 } 8340 mWebTextView.setTextAndKeepSelection(text); 8341 } 8342 } 8343 break; 8344 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8345 displaySoftKeyboard(true); 8346 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8347 case UPDATE_TEXT_SELECTION_MSG_ID: 8348 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8349 (WebViewCore.TextSelectionData) msg.obj); 8350 break; 8351 case FORM_DID_BLUR: 8352 if (inEditingMode() 8353 && mWebTextView.isSameTextField(msg.arg1)) { 8354 hideSoftKeyboard(); 8355 } 8356 break; 8357 case RETURN_LABEL: 8358 if (inEditingMode() 8359 && mWebTextView.isSameTextField(msg.arg1)) { 8360 mWebTextView.setHint((String) msg.obj); 8361 InputMethodManager imm 8362 = InputMethodManager.peekInstance(); 8363 // The hint is propagated to the IME in 8364 // onCreateInputConnection. If the IME is already 8365 // active, restart it so that its hint text is updated. 8366 if (imm != null && imm.isActive(mWebTextView)) { 8367 imm.restartInput(mWebTextView); 8368 } 8369 } 8370 break; 8371 case UNHANDLED_NAV_KEY: 8372 navHandledKey(msg.arg1, 1, false, 0); 8373 break; 8374 case UPDATE_TEXT_ENTRY_MSG_ID: 8375 // this is sent after finishing resize in WebViewCore. Make 8376 // sure the text edit box is still on the screen. 8377 if (inEditingMode() && nativeCursorIsTextInput()) { 8378 rebuildWebTextView(); 8379 } 8380 break; 8381 case CLEAR_TEXT_ENTRY: 8382 clearTextEntry(); 8383 break; 8384 case INVAL_RECT_MSG_ID: { 8385 Rect r = (Rect)msg.obj; 8386 if (r == null) { 8387 invalidate(); 8388 } else { 8389 // we need to scale r from content into view coords, 8390 // which viewInvalidate() does for us 8391 viewInvalidate(r.left, r.top, r.right, r.bottom); 8392 } 8393 break; 8394 } 8395 case REQUEST_FORM_DATA: 8396 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8397 if (mWebTextView.isSameTextField(msg.arg1)) { 8398 mWebTextView.setAdapterCustom(adapter); 8399 } 8400 break; 8401 case RESUME_WEBCORE_PRIORITY: 8402 WebViewCore.resumePriority(); 8403 WebViewCore.resumeUpdatePicture(mWebViewCore); 8404 break; 8405 8406 case LONG_PRESS_CENTER: 8407 // as this is shared by keydown and trackballdown, reset all 8408 // the states 8409 mGotCenterDown = false; 8410 mTrackballDown = false; 8411 performLongClick(); 8412 break; 8413 8414 case WEBCORE_NEED_TOUCH_EVENTS: 8415 mForwardTouchEvents = (msg.arg1 != 0); 8416 break; 8417 8418 case PREVENT_TOUCH_ID: 8419 if (inFullScreenMode()) { 8420 break; 8421 } 8422 TouchEventData ted = (TouchEventData) msg.obj; 8423 8424 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8425 // WebCore is responding to us; remove pending timeout. 8426 // It will be re-posted when needed. 8427 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8428 } 8429 break; 8430 8431 case REQUEST_KEYBOARD: 8432 if (msg.arg1 == 0) { 8433 hideSoftKeyboard(); 8434 } else { 8435 displaySoftKeyboard(false); 8436 } 8437 break; 8438 8439 case FIND_AGAIN: 8440 // Ignore if find has been dismissed. 8441 if (mFindIsUp && mFindCallback != null) { 8442 mFindCallback.findAll(); 8443 } 8444 break; 8445 8446 case DRAG_HELD_MOTIONLESS: 8447 mHeldMotionless = MOTIONLESS_TRUE; 8448 invalidate(); 8449 // fall through to keep scrollbars awake 8450 8451 case AWAKEN_SCROLL_BARS: 8452 if (mTouchMode == TOUCH_DRAG_MODE 8453 && mHeldMotionless == MOTIONLESS_TRUE) { 8454 awakenScrollBars(ViewConfiguration 8455 .getScrollDefaultDelay(), false); 8456 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8457 .obtainMessage(AWAKEN_SCROLL_BARS), 8458 ViewConfiguration.getScrollDefaultDelay()); 8459 } 8460 break; 8461 8462 case DO_MOTION_UP: 8463 doMotionUp(msg.arg1, msg.arg2); 8464 break; 8465 8466 case SCREEN_ON: 8467 setKeepScreenOn(msg.arg1 == 1); 8468 break; 8469 8470 case ENTER_FULLSCREEN_VIDEO: 8471 int layerId = msg.arg1; 8472 8473 String url = (String) msg.obj; 8474 if (mHTML5VideoViewProxy != null) { 8475 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8476 } 8477 break; 8478 8479 case SHOW_FULLSCREEN: { 8480 View view = (View) msg.obj; 8481 int orientation = msg.arg1; 8482 int npp = msg.arg2; 8483 8484 if (inFullScreenMode()) { 8485 Log.w(LOGTAG, "Should not have another full screen."); 8486 dismissFullScreenMode(); 8487 } 8488 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8489 mFullScreenHolder.setContentView(view); 8490 mFullScreenHolder.show(); 8491 8492 break; 8493 } 8494 case HIDE_FULLSCREEN: 8495 dismissFullScreenMode(); 8496 break; 8497 8498 case DOM_FOCUS_CHANGED: 8499 if (inEditingMode()) { 8500 nativeClearCursor(); 8501 rebuildWebTextView(); 8502 } 8503 break; 8504 8505 case SHOW_RECT_MSG_ID: { 8506 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8507 int x = mScrollX; 8508 int left = contentToViewX(data.mLeft); 8509 int width = contentToViewDimension(data.mWidth); 8510 int maxWidth = contentToViewDimension(data.mContentWidth); 8511 int viewWidth = getViewWidth(); 8512 if (width < viewWidth) { 8513 // center align 8514 x += left + width / 2 - mScrollX - viewWidth / 2; 8515 } else { 8516 x += (int) (left + data.mXPercentInDoc * width 8517 - mScrollX - data.mXPercentInView * viewWidth); 8518 } 8519 if (DebugFlags.WEB_VIEW) { 8520 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8521 width + ",maxWidth=" + maxWidth + 8522 ",viewWidth=" + viewWidth + ",x=" 8523 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8524 ",xPercentInView=" + data.mXPercentInView+ ")"); 8525 } 8526 // use the passing content width to cap x as the current 8527 // mContentWidth may not be updated yet 8528 x = Math.max(0, 8529 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8530 int top = contentToViewY(data.mTop); 8531 int height = contentToViewDimension(data.mHeight); 8532 int maxHeight = contentToViewDimension(data.mContentHeight); 8533 int viewHeight = getViewHeight(); 8534 int y = (int) (top + data.mYPercentInDoc * height - 8535 data.mYPercentInView * viewHeight); 8536 if (DebugFlags.WEB_VIEW) { 8537 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8538 height + ",maxHeight=" + maxHeight + 8539 ",viewHeight=" + viewHeight + ",y=" 8540 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8541 ",yPercentInView=" + data.mYPercentInView+ ")"); 8542 } 8543 // use the passing content height to cap y as the current 8544 // mContentHeight may not be updated yet 8545 y = Math.max(0, 8546 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8547 // We need to take into account the visible title height 8548 // when scrolling since y is an absolute view position. 8549 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8550 scrollTo(x, y); 8551 } 8552 break; 8553 8554 case CENTER_FIT_RECT: 8555 centerFitRect((Rect)msg.obj); 8556 break; 8557 8558 case SET_SCROLLBAR_MODES: 8559 mHorizontalScrollBarMode = msg.arg1; 8560 mVerticalScrollBarMode = msg.arg2; 8561 break; 8562 8563 case SELECTION_STRING_CHANGED: 8564 if (mAccessibilityInjector != null) { 8565 String selectionString = (String) msg.obj; 8566 mAccessibilityInjector.onSelectionStringChange(selectionString); 8567 } 8568 break; 8569 8570 case SET_TOUCH_HIGHLIGHT_RECTS: 8571 @SuppressWarnings("unchecked") 8572 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8573 setTouchHighlightRects(rects); 8574 break; 8575 8576 case SAVE_WEBARCHIVE_FINISHED: 8577 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8578 if (saveMessage.mCallback != null) { 8579 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8580 } 8581 break; 8582 8583 case SET_AUTOFILLABLE: 8584 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8585 if (mWebTextView != null) { 8586 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8587 rebuildWebTextView(); 8588 } 8589 break; 8590 8591 case AUTOFILL_COMPLETE: 8592 if (mWebTextView != null) { 8593 // Clear the WebTextView adapter when AutoFill finishes 8594 // so that the drop down gets cleared. 8595 mWebTextView.setAdapterCustom(null); 8596 } 8597 break; 8598 8599 case SELECT_AT: 8600 nativeSelectAt(msg.arg1, msg.arg2); 8601 break; 8602 8603 default: 8604 super.handleMessage(msg); 8605 break; 8606 } 8607 } 8608 } 8609 8610 private void setTouchHighlightRects(ArrayList<Rect> rects) { 8611 invalidate(mTouchHighlightRegion.getBounds()); 8612 mTouchHighlightRegion.setEmpty(); 8613 if (rects != null) { 8614 for (Rect rect : rects) { 8615 Rect viewRect = contentToViewRect(rect); 8616 // some sites, like stories in nytimes.com, set 8617 // mouse event handler in the top div. It is not 8618 // user friendly to highlight the div if it covers 8619 // more than half of the screen. 8620 if (viewRect.width() < getWidth() >> 1 8621 || viewRect.height() < getHeight() >> 1) { 8622 mTouchHighlightRegion.union(viewRect); 8623 } else { 8624 Log.w(LOGTAG, "Skip the huge selection rect:" 8625 + viewRect); 8626 } 8627 } 8628 invalidate(mTouchHighlightRegion.getBounds()); 8629 } 8630 } 8631 8632 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8633 * acceleration) */ 8634 protected void pageSwapCallback() { 8635 if (inEditingMode()) { 8636 didUpdateWebTextViewDimensions(ANYWHERE); 8637 } 8638 } 8639 8640 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8641 if (mNativeClass == 0) { 8642 if (mDelaySetPicture != null) { 8643 throw new IllegalStateException("Tried to setNewPicture with" 8644 + " a delay picture already set! (memory leak)"); 8645 } 8646 // Not initialized yet, delay set 8647 mDelaySetPicture = draw; 8648 return; 8649 } 8650 WebViewCore.ViewState viewState = draw.mViewState; 8651 boolean isPictureAfterFirstLayout = viewState != null; 8652 8653 if (updateBaseLayer) { 8654 // Request a callback on pageSwap (to reposition the webtextview) 8655 boolean registerPageSwapCallback = 8656 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8657 8658 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8659 getSettings().getShowVisualIndicator(), 8660 isPictureAfterFirstLayout, registerPageSwapCallback); 8661 } 8662 final Point viewSize = draw.mViewSize; 8663 if (isPictureAfterFirstLayout) { 8664 // Reset the last sent data here since dealing with new page. 8665 mLastWidthSent = 0; 8666 mZoomManager.onFirstLayout(draw); 8667 if (!mDrawHistory) { 8668 // Do not send the scroll event for this particular 8669 // scroll message. Note that a scroll event may 8670 // still be fired if the user scrolls before the 8671 // message can be handled. 8672 mSendScrollEvent = false; 8673 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 8674 mSendScrollEvent = true; 8675 8676 // As we are on a new page, remove the WebTextView. This 8677 // is necessary for page loads driven by webkit, and in 8678 // particular when the user was on a password field, so 8679 // the WebTextView was visible. 8680 clearTextEntry(); 8681 } 8682 } 8683 8684 // We update the layout (i.e. request a layout from the 8685 // view system) if the last view size that we sent to 8686 // WebCore matches the view size of the picture we just 8687 // received in the fixed dimension. 8688 final boolean updateLayout = viewSize.x == mLastWidthSent 8689 && viewSize.y == mLastHeightSent; 8690 // Don't send scroll event for picture coming from webkit, 8691 // since the new picture may cause a scroll event to override 8692 // the saved history scroll position. 8693 mSendScrollEvent = false; 8694 recordNewContentSize(draw.mContentSize.x, 8695 draw.mContentSize.y, updateLayout); 8696 mSendScrollEvent = true; 8697 if (DebugFlags.WEB_VIEW) { 8698 Rect b = draw.mInvalRegion.getBounds(); 8699 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8700 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8701 } 8702 invalidateContentRect(draw.mInvalRegion.getBounds()); 8703 8704 if (mPictureListener != null) { 8705 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8706 } 8707 8708 // update the zoom information based on the new picture 8709 mZoomManager.onNewPicture(draw); 8710 8711 if (draw.mFocusSizeChanged && inEditingMode()) { 8712 mFocusSizeChanged = true; 8713 } 8714 if (isPictureAfterFirstLayout) { 8715 mViewManager.postReadyToDrawAll(); 8716 } 8717 } 8718 8719 /** 8720 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8721 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8722 */ 8723 private void updateTextSelectionFromMessage(int nodePointer, 8724 int textGeneration, WebViewCore.TextSelectionData data) { 8725 if (inEditingMode() 8726 && mWebTextView.isSameTextField(nodePointer) 8727 && textGeneration == mTextGeneration) { 8728 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8729 } 8730 } 8731 8732 // Class used to use a dropdown for a <select> element 8733 private class InvokeListBox implements Runnable { 8734 // Whether the listbox allows multiple selection. 8735 private boolean mMultiple; 8736 // Passed in to a list with multiple selection to tell 8737 // which items are selected. 8738 private int[] mSelectedArray; 8739 // Passed in to a list with single selection to tell 8740 // where the initial selection is. 8741 private int mSelection; 8742 8743 private Container[] mContainers; 8744 8745 // Need these to provide stable ids to my ArrayAdapter, 8746 // which normally does not have stable ids. (Bug 1250098) 8747 private class Container extends Object { 8748 /** 8749 * Possible values for mEnabled. Keep in sync with OptionStatus in 8750 * WebViewCore.cpp 8751 */ 8752 final static int OPTGROUP = -1; 8753 final static int OPTION_DISABLED = 0; 8754 final static int OPTION_ENABLED = 1; 8755 8756 String mString; 8757 int mEnabled; 8758 int mId; 8759 8760 @Override 8761 public String toString() { 8762 return mString; 8763 } 8764 } 8765 8766 /** 8767 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8768 * and allow filtering. 8769 */ 8770 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8771 public MyArrayListAdapter() { 8772 super(mContext, 8773 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8774 com.android.internal.R.layout.webview_select_singlechoice, 8775 mContainers); 8776 } 8777 8778 @Override 8779 public View getView(int position, View convertView, 8780 ViewGroup parent) { 8781 // Always pass in null so that we will get a new CheckedTextView 8782 // Otherwise, an item which was previously used as an <optgroup> 8783 // element (i.e. has no check), could get used as an <option> 8784 // element, which needs a checkbox/radio, but it would not have 8785 // one. 8786 convertView = super.getView(position, null, parent); 8787 Container c = item(position); 8788 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8789 // ListView does not draw dividers between disabled and 8790 // enabled elements. Use a LinearLayout to provide dividers 8791 LinearLayout layout = new LinearLayout(mContext); 8792 layout.setOrientation(LinearLayout.VERTICAL); 8793 if (position > 0) { 8794 View dividerTop = new View(mContext); 8795 dividerTop.setBackgroundResource( 8796 android.R.drawable.divider_horizontal_bright); 8797 layout.addView(dividerTop); 8798 } 8799 8800 if (Container.OPTGROUP == c.mEnabled) { 8801 // Currently select_dialog_multichoice uses CheckedTextViews. 8802 // If that changes, the class cast will no longer be valid. 8803 if (mMultiple) { 8804 Assert.assertTrue(convertView instanceof CheckedTextView); 8805 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8806 } 8807 } else { 8808 // c.mEnabled == Container.OPTION_DISABLED 8809 // Draw the disabled element in a disabled state. 8810 convertView.setEnabled(false); 8811 } 8812 8813 layout.addView(convertView); 8814 if (position < getCount() - 1) { 8815 View dividerBottom = new View(mContext); 8816 dividerBottom.setBackgroundResource( 8817 android.R.drawable.divider_horizontal_bright); 8818 layout.addView(dividerBottom); 8819 } 8820 return layout; 8821 } 8822 return convertView; 8823 } 8824 8825 @Override 8826 public boolean hasStableIds() { 8827 // AdapterView's onChanged method uses this to determine whether 8828 // to restore the old state. Return false so that the old (out 8829 // of date) state does not replace the new, valid state. 8830 return false; 8831 } 8832 8833 private Container item(int position) { 8834 if (position < 0 || position >= getCount()) { 8835 return null; 8836 } 8837 return (Container) getItem(position); 8838 } 8839 8840 @Override 8841 public long getItemId(int position) { 8842 Container item = item(position); 8843 if (item == null) { 8844 return -1; 8845 } 8846 return item.mId; 8847 } 8848 8849 @Override 8850 public boolean areAllItemsEnabled() { 8851 return false; 8852 } 8853 8854 @Override 8855 public boolean isEnabled(int position) { 8856 Container item = item(position); 8857 if (item == null) { 8858 return false; 8859 } 8860 return Container.OPTION_ENABLED == item.mEnabled; 8861 } 8862 } 8863 8864 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8865 mMultiple = true; 8866 mSelectedArray = selected; 8867 8868 int length = array.length; 8869 mContainers = new Container[length]; 8870 for (int i = 0; i < length; i++) { 8871 mContainers[i] = new Container(); 8872 mContainers[i].mString = array[i]; 8873 mContainers[i].mEnabled = enabled[i]; 8874 mContainers[i].mId = i; 8875 } 8876 } 8877 8878 private InvokeListBox(String[] array, int[] enabled, int selection) { 8879 mSelection = selection; 8880 mMultiple = false; 8881 8882 int length = array.length; 8883 mContainers = new Container[length]; 8884 for (int i = 0; i < length; i++) { 8885 mContainers[i] = new Container(); 8886 mContainers[i].mString = array[i]; 8887 mContainers[i].mEnabled = enabled[i]; 8888 mContainers[i].mId = i; 8889 } 8890 } 8891 8892 /* 8893 * Whenever the data set changes due to filtering, this class ensures 8894 * that the checked item remains checked. 8895 */ 8896 private class SingleDataSetObserver extends DataSetObserver { 8897 private long mCheckedId; 8898 private ListView mListView; 8899 private Adapter mAdapter; 8900 8901 /* 8902 * Create a new observer. 8903 * @param id The ID of the item to keep checked. 8904 * @param l ListView for getting and clearing the checked states 8905 * @param a Adapter for getting the IDs 8906 */ 8907 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8908 mCheckedId = id; 8909 mListView = l; 8910 mAdapter = a; 8911 } 8912 8913 @Override 8914 public void onChanged() { 8915 // The filter may have changed which item is checked. Find the 8916 // item that the ListView thinks is checked. 8917 int position = mListView.getCheckedItemPosition(); 8918 long id = mAdapter.getItemId(position); 8919 if (mCheckedId != id) { 8920 // Clear the ListView's idea of the checked item, since 8921 // it is incorrect 8922 mListView.clearChoices(); 8923 // Search for mCheckedId. If it is in the filtered list, 8924 // mark it as checked 8925 int count = mAdapter.getCount(); 8926 for (int i = 0; i < count; i++) { 8927 if (mAdapter.getItemId(i) == mCheckedId) { 8928 mListView.setItemChecked(i, true); 8929 break; 8930 } 8931 } 8932 } 8933 } 8934 } 8935 8936 public void run() { 8937 final ListView listView = (ListView) LayoutInflater.from(mContext) 8938 .inflate(com.android.internal.R.layout.select_dialog, null); 8939 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8940 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8941 .setView(listView).setCancelable(true) 8942 .setInverseBackgroundForced(true); 8943 8944 if (mMultiple) { 8945 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8946 public void onClick(DialogInterface dialog, int which) { 8947 mWebViewCore.sendMessage( 8948 EventHub.LISTBOX_CHOICES, 8949 adapter.getCount(), 0, 8950 listView.getCheckedItemPositions()); 8951 }}); 8952 b.setNegativeButton(android.R.string.cancel, 8953 new DialogInterface.OnClickListener() { 8954 public void onClick(DialogInterface dialog, int which) { 8955 mWebViewCore.sendMessage( 8956 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8957 }}); 8958 } 8959 mListBoxDialog = b.create(); 8960 listView.setAdapter(adapter); 8961 listView.setFocusableInTouchMode(true); 8962 // There is a bug (1250103) where the checks in a ListView with 8963 // multiple items selected are associated with the positions, not 8964 // the ids, so the items do not properly retain their checks when 8965 // filtered. Do not allow filtering on multiple lists until 8966 // that bug is fixed. 8967 8968 listView.setTextFilterEnabled(!mMultiple); 8969 if (mMultiple) { 8970 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8971 int length = mSelectedArray.length; 8972 for (int i = 0; i < length; i++) { 8973 listView.setItemChecked(mSelectedArray[i], true); 8974 } 8975 } else { 8976 listView.setOnItemClickListener(new OnItemClickListener() { 8977 public void onItemClick(AdapterView<?> parent, View v, 8978 int position, long id) { 8979 // Rather than sending the message right away, send it 8980 // after the page regains focus. 8981 mListBoxMessage = Message.obtain(null, 8982 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8983 mListBoxDialog.dismiss(); 8984 mListBoxDialog = null; 8985 } 8986 }); 8987 if (mSelection != -1) { 8988 listView.setSelection(mSelection); 8989 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8990 listView.setItemChecked(mSelection, true); 8991 DataSetObserver observer = new SingleDataSetObserver( 8992 adapter.getItemId(mSelection), listView, adapter); 8993 adapter.registerDataSetObserver(observer); 8994 } 8995 } 8996 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8997 public void onCancel(DialogInterface dialog) { 8998 mWebViewCore.sendMessage( 8999 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9000 mListBoxDialog = null; 9001 } 9002 }); 9003 mListBoxDialog.show(); 9004 } 9005 } 9006 9007 private Message mListBoxMessage; 9008 9009 /* 9010 * Request a dropdown menu for a listbox with multiple selection. 9011 * 9012 * @param array Labels for the listbox. 9013 * @param enabledArray State for each element in the list. See static 9014 * integers in Container class. 9015 * @param selectedArray Which positions are initally selected. 9016 */ 9017 void requestListBox(String[] array, int[] enabledArray, int[] 9018 selectedArray) { 9019 mPrivateHandler.post( 9020 new InvokeListBox(array, enabledArray, selectedArray)); 9021 } 9022 9023 /* 9024 * Request a dropdown menu for a listbox with single selection or a single 9025 * <select> element. 9026 * 9027 * @param array Labels for the listbox. 9028 * @param enabledArray State for each element in the list. See static 9029 * integers in Container class. 9030 * @param selection Which position is initally selected. 9031 */ 9032 void requestListBox(String[] array, int[] enabledArray, int selection) { 9033 mPrivateHandler.post( 9034 new InvokeListBox(array, enabledArray, selection)); 9035 } 9036 9037 // called by JNI 9038 private void sendMoveFocus(int frame, int node) { 9039 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9040 new WebViewCore.CursorData(frame, node, 0, 0)); 9041 } 9042 9043 // called by JNI 9044 private void sendMoveMouse(int frame, int node, int x, int y) { 9045 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9046 new WebViewCore.CursorData(frame, node, x, y)); 9047 } 9048 9049 /* 9050 * Send a mouse move event to the webcore thread. 9051 * 9052 * @param removeFocus Pass true to remove the WebTextView, if present. 9053 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9054 * called by JNI 9055 */ 9056 @SuppressWarnings("unused") 9057 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9058 if (removeFocus) { 9059 clearTextEntry(); 9060 } 9061 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9062 stopPaintingCaret ? 1 : 0, 0, 9063 cursorData()); 9064 } 9065 9066 /** 9067 * Called by JNI to send a message to the webcore thread that the user 9068 * touched the webpage. 9069 * @param touchGeneration Generation number of the touch, to ignore touches 9070 * after a new one has been generated. 9071 * @param frame Pointer to the frame holding the node that was touched. 9072 * @param node Pointer to the node touched. 9073 * @param x x-position of the touch. 9074 * @param y y-position of the touch. 9075 */ 9076 private void sendMotionUp(int touchGeneration, 9077 int frame, int node, int x, int y) { 9078 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9079 touchUpData.mMoveGeneration = touchGeneration; 9080 touchUpData.mFrame = frame; 9081 touchUpData.mNode = node; 9082 touchUpData.mX = x; 9083 touchUpData.mY = y; 9084 touchUpData.mNativeLayer = nativeScrollableLayer( 9085 x, y, touchUpData.mNativeLayerRect, null); 9086 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9087 } 9088 9089 9090 private int getScaledMaxXScroll() { 9091 int width; 9092 if (mHeightCanMeasure == false) { 9093 width = getViewWidth() / 4; 9094 } else { 9095 Rect visRect = new Rect(); 9096 calcOurVisibleRect(visRect); 9097 width = visRect.width() / 2; 9098 } 9099 // FIXME the divisor should be retrieved from somewhere 9100 return viewToContentX(width); 9101 } 9102 9103 private int getScaledMaxYScroll() { 9104 int height; 9105 if (mHeightCanMeasure == false) { 9106 height = getViewHeight() / 4; 9107 } else { 9108 Rect visRect = new Rect(); 9109 calcOurVisibleRect(visRect); 9110 height = visRect.height() / 2; 9111 } 9112 // FIXME the divisor should be retrieved from somewhere 9113 // the closest thing today is hard-coded into ScrollView.java 9114 // (from ScrollView.java, line 363) int maxJump = height/2; 9115 return Math.round(height * mZoomManager.getInvScale()); 9116 } 9117 9118 /** 9119 * Called by JNI to invalidate view 9120 */ 9121 private void viewInvalidate() { 9122 invalidate(); 9123 } 9124 9125 /** 9126 * Pass the key directly to the page. This assumes that 9127 * nativePageShouldHandleShiftAndArrows() returned true. 9128 */ 9129 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9130 int keyEventAction; 9131 int eventHubAction; 9132 if (down) { 9133 keyEventAction = KeyEvent.ACTION_DOWN; 9134 eventHubAction = EventHub.KEY_DOWN; 9135 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9136 } else { 9137 keyEventAction = KeyEvent.ACTION_UP; 9138 eventHubAction = EventHub.KEY_UP; 9139 } 9140 9141 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9142 1, (metaState & KeyEvent.META_SHIFT_ON) 9143 | (metaState & KeyEvent.META_ALT_ON) 9144 | (metaState & KeyEvent.META_SYM_ON) 9145 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9146 mWebViewCore.sendMessage(eventHubAction, event); 9147 } 9148 9149 // return true if the key was handled 9150 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9151 long time) { 9152 if (mNativeClass == 0) { 9153 return false; 9154 } 9155 mInitialHitTestResult = null; 9156 mLastCursorTime = time; 9157 mLastCursorBounds = nativeGetCursorRingBounds(); 9158 boolean keyHandled 9159 = nativeMoveCursor(keyCode, count, noScroll) == false; 9160 if (DebugFlags.WEB_VIEW) { 9161 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9162 + " mLastCursorTime=" + mLastCursorTime 9163 + " handled=" + keyHandled); 9164 } 9165 if (keyHandled == false) { 9166 return keyHandled; 9167 } 9168 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9169 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9170 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9171 // set last touch so that context menu related functions will work 9172 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9173 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9174 if (mHeightCanMeasure == false) { 9175 return keyHandled; 9176 } 9177 Rect visRect = new Rect(); 9178 calcOurVisibleRect(visRect); 9179 Rect outset = new Rect(visRect); 9180 int maxXScroll = visRect.width() / 2; 9181 int maxYScroll = visRect.height() / 2; 9182 outset.inset(-maxXScroll, -maxYScroll); 9183 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9184 return keyHandled; 9185 } 9186 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9187 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9188 maxXScroll); 9189 if (maxH > 0) { 9190 pinScrollBy(maxH, 0, true, 0); 9191 } else { 9192 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9193 -maxXScroll); 9194 if (maxH < 0) { 9195 pinScrollBy(maxH, 0, true, 0); 9196 } 9197 } 9198 if (mLastCursorBounds.isEmpty()) return keyHandled; 9199 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9200 return keyHandled; 9201 } 9202 if (DebugFlags.WEB_VIEW) { 9203 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9204 + contentCursorRingBounds); 9205 } 9206 requestRectangleOnScreen(viewCursorRingBounds); 9207 return keyHandled; 9208 } 9209 9210 /** 9211 * @return Whether accessibility script has been injected. 9212 */ 9213 private boolean accessibilityScriptInjected() { 9214 // TODO: Maybe the injected script should announce its presence in 9215 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9216 // will check that as one of the conditions it looks for 9217 return mAccessibilityScriptInjected; 9218 } 9219 9220 /** 9221 * Set the background color. It's white by default. Pass 9222 * zero to make the view transparent. 9223 * @param color the ARGB color described by Color.java 9224 */ 9225 @Override 9226 public void setBackgroundColor(int color) { 9227 mBackgroundColor = color; 9228 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9229 } 9230 9231 /** 9232 * @deprecated This method is now obsolete. 9233 */ 9234 @Deprecated 9235 public void debugDump() { 9236 checkThread(); 9237 nativeDebugDump(); 9238 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9239 } 9240 9241 /** 9242 * Draw the HTML page into the specified canvas. This call ignores any 9243 * view-specific zoom, scroll offset, or other changes. It does not draw 9244 * any view-specific chrome, such as progress or URL bars. 9245 * 9246 * @hide only needs to be accessible to Browser and testing 9247 */ 9248 public void drawPage(Canvas canvas) { 9249 nativeDraw(canvas, 0, 0, false); 9250 } 9251 9252 /** 9253 * Enable the communication b/t the webView and VideoViewProxy 9254 * 9255 * @hide only used by the Browser 9256 */ 9257 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9258 mHTML5VideoViewProxy = proxy; 9259 } 9260 9261 /** 9262 * Set the time to wait between passing touches to WebCore. See also the 9263 * TOUCH_SENT_INTERVAL member for further discussion. 9264 * 9265 * @hide This is only used by the DRT test application. 9266 */ 9267 public void setTouchInterval(int interval) { 9268 mCurrentTouchInterval = interval; 9269 } 9270 9271 /** 9272 * Update our cache with updatedText. 9273 * @param updatedText The new text to put in our cache. 9274 * @hide 9275 */ 9276 protected void updateCachedTextfield(String updatedText) { 9277 // Also place our generation number so that when we look at the cache 9278 // we recognize that it is up to date. 9279 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9280 } 9281 9282 /*package*/ void autoFillForm(int autoFillQueryId) { 9283 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9284 } 9285 9286 /* package */ ViewManager getViewManager() { 9287 return mViewManager; 9288 } 9289 9290 private static void checkThread() { 9291 if (Looper.myLooper() != Looper.getMainLooper()) { 9292 Throwable throwable = new Throwable( 9293 "Warning: A WebView method was called on thread '" + 9294 Thread.currentThread().getName() + "'. " + 9295 "All WebView methods must be called on the UI thread. " + 9296 "Future versions of WebView may not support use on other threads."); 9297 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9298 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9299 } 9300 } 9301 9302 /** @hide send content invalidate */ 9303 protected void contentInvalidateAll() { 9304 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9305 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9306 } 9307 } 9308 9309 /** @hide call pageSwapCallback upon next page swap */ 9310 protected void registerPageSwapCallback() { 9311 nativeRegisterPageSwapCallback(); 9312 } 9313 9314 /** 9315 * Begin collecting per-tile profiling data 9316 * 9317 * @hide only used by profiling tests 9318 */ 9319 public void tileProfilingStart() { 9320 nativeTileProfilingStart(); 9321 } 9322 /** 9323 * Return per-tile profiling data 9324 * 9325 * @hide only used by profiling tests 9326 */ 9327 public float tileProfilingStop() { 9328 return nativeTileProfilingStop(); 9329 } 9330 9331 /** @hide only used by profiling tests */ 9332 public void tileProfilingClear() { 9333 nativeTileProfilingClear(); 9334 } 9335 /** @hide only used by profiling tests */ 9336 public int tileProfilingNumFrames() { 9337 return nativeTileProfilingNumFrames(); 9338 } 9339 /** @hide only used by profiling tests */ 9340 public int tileProfilingNumTilesInFrame(int frame) { 9341 return nativeTileProfilingNumTilesInFrame(frame); 9342 } 9343 /** @hide only used by profiling tests */ 9344 public int tileProfilingGetInt(int frame, int tile, String key) { 9345 return nativeTileProfilingGetInt(frame, tile, key); 9346 } 9347 /** @hide only used by profiling tests */ 9348 public float tileProfilingGetFloat(int frame, int tile, String key) { 9349 return nativeTileProfilingGetFloat(frame, tile, key); 9350 } 9351 9352 /** 9353 * Helper method to deal with differences between hardware and software rendering 9354 */ 9355 private void recordButtons(Canvas canvas, boolean focus, boolean pressed, 9356 boolean inval) { 9357 boolean isHardwareAccel = canvas != null 9358 ? canvas.isHardwareAccelerated() 9359 : isHardwareAccelerated(); 9360 if (isHardwareAccel) { 9361 // We never want to change button state if we are hardware accelerated, 9362 // but we DO want to invalidate as necessary so that the GL ring 9363 // can be drawn 9364 nativeRecordButtons(false, false, inval); 9365 } else { 9366 nativeRecordButtons(focus, pressed, inval); 9367 } 9368 } 9369 9370 private native int nativeCacheHitFramePointer(); 9371 private native boolean nativeCacheHitIsPlugin(); 9372 private native Rect nativeCacheHitNodeBounds(); 9373 private native int nativeCacheHitNodePointer(); 9374 /* package */ native void nativeClearCursor(); 9375 private native void nativeCreate(int ptr, String drawableDir); 9376 private native int nativeCursorFramePointer(); 9377 private native Rect nativeCursorNodeBounds(); 9378 private native int nativeCursorNodePointer(); 9379 private native boolean nativeCursorIntersects(Rect visibleRect); 9380 private native boolean nativeCursorIsAnchor(); 9381 private native boolean nativeCursorIsTextInput(); 9382 private native Point nativeCursorPosition(); 9383 private native String nativeCursorText(); 9384 /** 9385 * Returns true if the native cursor node says it wants to handle key events 9386 * (ala plugins). This can only be called if mNativeClass is non-zero! 9387 */ 9388 private native boolean nativeCursorWantsKeyEvents(); 9389 private native void nativeDebugDump(); 9390 private native void nativeDestroy(); 9391 9392 /** 9393 * Draw the picture set with a background color and extra. If 9394 * "splitIfNeeded" is true and the return value is not 0, the return value 9395 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9396 * native allocation can be freed. 9397 */ 9398 private native int nativeDraw(Canvas canvas, int color, int extra, 9399 boolean splitIfNeeded); 9400 private native void nativeDumpDisplayTree(String urlOrNull); 9401 private native boolean nativeEvaluateLayersAnimations(); 9402 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 9403 float scale, int extras); 9404 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 9405 private native void nativeExtendSelection(int x, int y); 9406 private native int nativeFindAll(String findLower, String findUpper, 9407 boolean sameAsLastSearch); 9408 private native void nativeFindNext(boolean forward); 9409 /* package */ native int nativeFocusCandidateFramePointer(); 9410 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9411 /* package */ native boolean nativeFocusCandidateIsPassword(); 9412 private native boolean nativeFocusCandidateIsRtlText(); 9413 private native boolean nativeFocusCandidateIsTextInput(); 9414 /* package */ native int nativeFocusCandidateMaxLength(); 9415 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9416 /* package */ native String nativeFocusCandidateName(); 9417 private native Rect nativeFocusCandidateNodeBounds(); 9418 /** 9419 * @return A Rect with left, top, right, bottom set to the corresponding 9420 * padding values in the focus candidate, if it is a textfield/textarea with 9421 * a style. Otherwise return null. This is not actually a rectangle; Rect 9422 * is being used to pass four integers. 9423 */ 9424 private native Rect nativeFocusCandidatePaddingRect(); 9425 /* package */ native int nativeFocusCandidatePointer(); 9426 private native String nativeFocusCandidateText(); 9427 /* package */ native float nativeFocusCandidateTextSize(); 9428 /* package */ native int nativeFocusCandidateLineHeight(); 9429 /** 9430 * Returns an integer corresponding to WebView.cpp::type. 9431 * See WebTextView.setType() 9432 */ 9433 private native int nativeFocusCandidateType(); 9434 private native boolean nativeFocusIsPlugin(); 9435 private native Rect nativeFocusNodeBounds(); 9436 /* package */ native int nativeFocusNodePointer(); 9437 private native Rect nativeGetCursorRingBounds(); 9438 private native String nativeGetSelection(); 9439 private native boolean nativeHasCursorNode(); 9440 private native boolean nativeHasFocusNode(); 9441 private native void nativeHideCursor(); 9442 private native boolean nativeHitSelection(int x, int y); 9443 private native String nativeImageURI(int x, int y); 9444 private native void nativeInstrumentReport(); 9445 private native Rect nativeLayerBounds(int layer); 9446 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9447 // return true if the page has been scrolled 9448 private native boolean nativeMotionUp(int x, int y, int slop); 9449 // returns false if it handled the key 9450 private native boolean nativeMoveCursor(int keyCode, int count, 9451 boolean noScroll); 9452 private native int nativeMoveGeneration(); 9453 private native void nativeMoveSelection(int x, int y); 9454 /** 9455 * @return true if the page should get the shift and arrow keys, rather 9456 * than select text/navigation. 9457 * 9458 * If the focus is a plugin, or if the focus and cursor match and are 9459 * a contentEditable element, then the page should handle these keys. 9460 */ 9461 private native boolean nativePageShouldHandleShiftAndArrows(); 9462 private native boolean nativePointInNavCache(int x, int y, int slop); 9463 // Like many other of our native methods, you must make sure that 9464 // mNativeClass is not null before calling this method. 9465 private native void nativeRecordButtons(boolean focused, 9466 boolean pressed, boolean invalidate); 9467 private native void nativeResetSelection(); 9468 private native Point nativeSelectableText(); 9469 private native void nativeSelectAll(); 9470 private native void nativeSelectBestAt(Rect rect); 9471 private native void nativeSelectAt(int x, int y); 9472 private native int nativeSelectionX(); 9473 private native int nativeSelectionY(); 9474 private native int nativeFindIndex(); 9475 private native void nativeSetExtendSelection(); 9476 private native void nativeSetFindIsEmpty(); 9477 private native void nativeSetFindIsUp(boolean isUp); 9478 private native void nativeSetHeightCanMeasure(boolean measure); 9479 private native void nativeSetBaseLayer(int layer, Region invalRegion, 9480 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9481 boolean registerPageSwapCallback); 9482 private native int nativeGetBaseLayer(); 9483 private native void nativeShowCursorTimed(); 9484 private native void nativeReplaceBaseContent(int content); 9485 private native void nativeCopyBaseContentToPicture(Picture pict); 9486 private native boolean nativeHasContent(); 9487 private native void nativeSetSelectionPointer(boolean set, 9488 float scale, int x, int y); 9489 private native boolean nativeStartSelection(int x, int y); 9490 private native void nativeStopGL(); 9491 private native Rect nativeSubtractLayers(Rect content); 9492 private native int nativeTextGeneration(); 9493 private native void nativeRegisterPageSwapCallback(); 9494 private native void nativeTileProfilingStart(); 9495 private native float nativeTileProfilingStop(); 9496 private native void nativeTileProfilingClear(); 9497 private native int nativeTileProfilingNumFrames(); 9498 private native int nativeTileProfilingNumTilesInFrame(int frame); 9499 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9500 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9501 // Never call this version except by updateCachedTextfield(String) - 9502 // we always want to pass in our generation number. 9503 private native void nativeUpdateCachedTextfield(String updatedText, 9504 int generation); 9505 private native boolean nativeWordSelection(int x, int y); 9506 // return NO_LEFTEDGE means failure. 9507 static final int NO_LEFTEDGE = -1; 9508 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9509 9510 private native void nativeUseHardwareAccelSkia(boolean enabled); 9511 9512 // Returns a pointer to the scrollable LayerAndroid at the given point. 9513 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9514 Rect scrollBounds); 9515 /** 9516 * Scroll the specified layer. 9517 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9518 * @param newX Destination x position to which to scroll. 9519 * @param newY Destination y position to which to scroll. 9520 * @return True if the layer is successfully scrolled. 9521 */ 9522 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9523 private native void nativeSetIsScrolling(boolean isScrolling); 9524 private native int nativeGetBackgroundColor(); 9525 native boolean nativeSetProperty(String key, String value); 9526 native String nativeGetProperty(String key); 9527 private native void nativeGetTextSelectionRegion(Region region); 9528 /** 9529 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9530 */ 9531 private static native void nativeOnTrimMemory(int level); 9532} 9533