WebView.java revision 92c99162ae512a68cb8364943f28b2aff0f6b54c
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.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageInfo; 29import android.content.pm.PackageManager; 30import android.content.res.AssetManager; 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.CornerPathEffect; 39import android.graphics.DrawFilter; 40import android.graphics.Paint; 41import android.graphics.PaintFlagsDrawFilter; 42import android.graphics.Picture; 43import android.graphics.Point; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region; 47import android.graphics.SurfaceTexture; 48import android.graphics.Shader; 49import android.graphics.drawable.Drawable; 50import android.net.Proxy; 51import android.net.ProxyProperties; 52import android.net.Uri; 53import android.net.http.SslCertificate; 54import android.os.AsyncTask; 55import android.os.Bundle; 56import android.os.Handler; 57import android.os.Message; 58import android.provider.Settings; 59import android.speech.tts.TextToSpeech; 60import android.text.Selection; 61import android.text.Spannable; 62import android.util.AttributeSet; 63import android.util.EventLog; 64import android.util.Log; 65import android.view.Gravity; 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.EventHub; 86import android.webkit.WebViewCore.TouchEventData; 87import android.webkit.WebViewCore.TouchHighlightData; 88import android.widget.AbsoluteLayout; 89import android.widget.Adapter; 90import android.widget.AdapterView; 91import android.widget.AdapterView.OnItemClickListener; 92import android.widget.ArrayAdapter; 93import android.widget.CheckedTextView; 94import android.widget.LinearLayout; 95import android.widget.ListView; 96import android.widget.OverScroller; 97import android.widget.Toast; 98 99import java.io.File; 100import java.io.FileInputStream; 101import java.io.FileNotFoundException; 102import java.io.FileOutputStream; 103import java.net.URLDecoder; 104import java.util.ArrayList; 105import java.util.HashMap; 106import java.util.HashSet; 107import java.util.List; 108import java.util.Map; 109import java.util.Set; 110import java.util.Vector; 111import java.util.regex.Matcher; 112import java.util.regex.Pattern; 113 114import junit.framework.Assert; 115 116/** 117 * <p>A View that displays web pages. This class is the basis upon which you 118 * can roll your own web browser or simply display some online content within your Activity. 119 * It uses the WebKit rendering engine to display 120 * web pages and includes methods to navigate forward and backward 121 * through a history, zoom in and out, perform text searches and more.</p> 122 * <p>To enable the built-in zoom, set 123 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 124 * (introduced in API version 3). 125 * <p>Note that, in order for your Activity to access the Internet and load web pages 126 * in a WebView, you must add the {@code INTERNET} permissions to your 127 * Android Manifest file:</p> 128 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 129 * 130 * <p>This must be a child of the <a 131 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 132 * element.</p> 133 * 134 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 135 * tutorial</a>.</p> 136 * 137 * <h3>Basic usage</h3> 138 * 139 * <p>By default, a WebView provides no browser-like widgets, does not 140 * enable JavaScript and web page errors are ignored. If your goal is only 141 * to display some HTML as a part of your UI, this is probably fine; 142 * the user won't need to interact with the web page beyond reading 143 * it, and the web page won't need to interact with the user. If you 144 * actually want a full-blown web browser, then you probably want to 145 * invoke the Browser application with a URL Intent rather than show it 146 * with a WebView. For example: 147 * <pre> 148 * Uri uri = Uri.parse("http://www.example.com"); 149 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 150 * startActivity(intent); 151 * </pre> 152 * <p>See {@link android.content.Intent} for more information.</p> 153 * 154 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 155 * or set the entire Activity window as a WebView during {@link 156 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 157 * <pre class="prettyprint"> 158 * WebView webview = new WebView(this); 159 * setContentView(webview); 160 * </pre> 161 * 162 * <p>Then load the desired web page:</p> 163 * <pre> 164 * // Simplest usage: note that an exception will NOT be thrown 165 * // if there is an error loading this page (see below). 166 * webview.loadUrl("http://slashdot.org/"); 167 * 168 * // OR, you can also load from an HTML string: 169 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 170 * webview.loadData(summary, "text/html", "utf-8"); 171 * // ... although note that there are restrictions on what this HTML can do. 172 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 173 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 174 * </pre> 175 * 176 * <p>A WebView has several customization points where you can add your 177 * own behavior. These are:</p> 178 * 179 * <ul> 180 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 181 * This class is called when something that might impact a 182 * browser UI happens, for instance, progress updates and 183 * JavaScript alerts are sent here (see <a 184 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 185 * </li> 186 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 187 * It will be called when things happen that impact the 188 * rendering of the content, eg, errors or form submissions. You 189 * can also intercept URL loading here (via {@link 190 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 191 * shouldOverrideUrlLoading()}).</li> 192 * <li>Modifying the {@link android.webkit.WebSettings}, such as 193 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 194 * setJavaScriptEnabled()}. </li> 195 * <li>Adding JavaScript-to-Java interfaces with the {@link 196 * android.webkit.WebView#addJavascriptInterface} method. 197 * This lets you bind Java objects into the WebView so they can be 198 * controlled from the web pages JavaScript.</li> 199 * </ul> 200 * 201 * <p>Here's a more complicated example, showing error handling, 202 * settings, and progress notification:</p> 203 * 204 * <pre class="prettyprint"> 205 * // Let's display the progress in the activity title bar, like the 206 * // browser app does. 207 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 208 * 209 * webview.getSettings().setJavaScriptEnabled(true); 210 * 211 * final Activity activity = this; 212 * webview.setWebChromeClient(new WebChromeClient() { 213 * public void onProgressChanged(WebView view, int progress) { 214 * // Activities and WebViews measure progress with different scales. 215 * // The progress meter will automatically disappear when we reach 100% 216 * activity.setProgress(progress * 1000); 217 * } 218 * }); 219 * webview.setWebViewClient(new WebViewClient() { 220 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 221 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 222 * } 223 * }); 224 * 225 * webview.loadUrl("http://slashdot.org/"); 226 * </pre> 227 * 228 * <h3>Cookie and window management</h3> 229 * 230 * <p>For obvious security reasons, your application has its own 231 * cache, cookie store etc.—it does not share the Browser 232 * application's data. Cookies are managed on a separate thread, so 233 * operations like index building don't block the UI 234 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 235 * if you want to use cookies in your application. 236 * </p> 237 * 238 * <p>By default, requests by the HTML to open new windows are 239 * ignored. This is true whether they be opened by JavaScript or by 240 * the target attribute on a link. You can customize your 241 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 242 * and render them in whatever manner you want.</p> 243 * 244 * <p>The standard behavior for an Activity is to be destroyed and 245 * recreated when the device orientation or any other configuration changes. This will cause 246 * the WebView to reload the current page. If you don't want that, you 247 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 248 * changes, and then just leave the WebView alone. It'll automatically 249 * re-orient itself as appropriate. Read <a 250 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 251 * more information about how to handle configuration changes during runtime.</p> 252 * 253 * 254 * <h3>Building web pages to support different screen densities</h3> 255 * 256 * <p>The screen density of a device is based on the screen resolution. A screen with low density 257 * has fewer available pixels per inch, where a screen with high density 258 * has more — sometimes significantly more — pixels per inch. The density of a 259 * screen is important because, other things being equal, a UI element (such as a button) whose 260 * height and width are defined in terms of screen pixels will appear larger on the lower density 261 * screen and smaller on the higher density screen. 262 * For simplicity, Android collapses all actual screen densities into three generalized densities: 263 * high, medium, and low.</p> 264 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 265 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 266 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 267 * are bigger). 268 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 269 * you (as a web developer) target screens with different screen densities.</p> 270 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 271 * <ul> 272 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 273 * default scaling factor used for the current device. For example, if the value of {@code 274 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 275 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 276 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 277 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 278 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 279 * (discussed below), then you can stop this default scaling behavior.</li> 280 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 281 * densities for which this style sheet is to be used. The corresponding value should be either 282 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 283 * density, or high density screens, respectively. For example: 284 * <pre> 285 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 286 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 287 * which is the high density pixel ratio.</p> 288 * </li> 289 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 290 * this to specify the target density for which the web page is designed, using the following 291 * values: 292 * <ul> 293 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 294 * occurs.</li> 295 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 296 * as appropriate.</li> 297 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 298 * low density screens scale down. This is also the default behavior.</li> 299 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 300 * as appropriate.</li> 301 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 302 * values are 70-400).</li> 303 * </ul> 304 * <p>Here's an example meta tag to specify the target density:</p> 305 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 306 * </ul> 307 * <p>If you want to modify your web page for different densities, by using the {@code 308 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 309 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 310 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 311 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 312 * 313 * 314 */ 315@Widget 316public class WebView extends AbsoluteLayout 317 implements ViewTreeObserver.OnGlobalFocusChangeListener, 318 ViewGroup.OnHierarchyChangeListener { 319 320 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 321 public void onGlobalLayout() { 322 if (isShown()) { 323 setGLRectViewport(); 324 } 325 } 326 } 327 328 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 329 public void onScrollChanged() { 330 if (isShown()) { 331 setGLRectViewport(); 332 } 333 } 334 } 335 336 // The listener to capture global layout change event. 337 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 338 339 // The listener to capture scroll event. 340 private InnerScrollChangedListener mScrollChangedListener = null; 341 342 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 343 // the screen all-the-time. Good for profiling our drawing code 344 static private final boolean AUTO_REDRAW_HACK = false; 345 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 346 private boolean mAutoRedraw; 347 348 // Reference to the AlertDialog displayed by InvokeListBox. 349 // It's used to dismiss the dialog in destroy if not done before. 350 private AlertDialog mListBoxDialog = null; 351 352 static final String LOGTAG = "webview"; 353 354 private ZoomManager mZoomManager; 355 356 private final Rect mGLRectViewport = new Rect(); 357 private final Rect mViewRectViewport = new Rect(); 358 private boolean mGLViewportEmpty = false; 359 360 /** 361 * Transportation object for returning WebView across thread boundaries. 362 */ 363 public class WebViewTransport { 364 private WebView mWebview; 365 366 /** 367 * Set the WebView to the transportation object. 368 * @param webview The WebView to transport. 369 */ 370 public synchronized void setWebView(WebView webview) { 371 mWebview = webview; 372 } 373 374 /** 375 * Return the WebView object. 376 * @return WebView The transported WebView object. 377 */ 378 public synchronized WebView getWebView() { 379 return mWebview; 380 } 381 } 382 383 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 384 private final CallbackProxy mCallbackProxy; 385 386 private final WebViewDatabase mDatabase; 387 388 // SSL certificate for the main top-level page (if secure) 389 private SslCertificate mCertificate; 390 391 // Native WebView pointer that is 0 until the native object has been 392 // created. 393 private int mNativeClass; 394 // This would be final but it needs to be set to null when the WebView is 395 // destroyed. 396 private WebViewCore mWebViewCore; 397 // Handler for dispatching UI messages. 398 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 399 private WebTextView mWebTextView; 400 // Used to ignore changes to webkit text that arrives to the UI side after 401 // more key events. 402 private int mTextGeneration; 403 404 /* package */ void incrementTextGeneration() { mTextGeneration++; } 405 406 // Used by WebViewCore to create child views. 407 /* package */ final ViewManager mViewManager; 408 409 // Used to display in full screen mode 410 PluginFullScreenHolder mFullScreenHolder; 411 412 /** 413 * Position of the last touch event in pixels. 414 * Use integer to prevent loss of dragging delta calculation accuracy; 415 * which was done in float and converted to integer, and resulted in gradual 416 * and compounding touch position and view dragging mismatch. 417 */ 418 private int mLastTouchX; 419 private int mLastTouchY; 420 421 /** 422 * Time of the last touch event. 423 */ 424 private long mLastTouchTime; 425 426 /** 427 * Time of the last time sending touch event to WebViewCore 428 */ 429 private long mLastSentTouchTime; 430 431 /** 432 * The minimum elapsed time before sending another ACTION_MOVE event to 433 * WebViewCore. This really should be tuned for each type of the devices. 434 * For example in Google Map api test case, it takes Dream device at least 435 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 436 * triggering the layout and drawing the picture. While the same process 437 * takes 60+ms on the current high speed device. If we make 438 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 439 * to WebViewCore queue and the real layout and draw events will be pushed 440 * to further, which slows down the refresh rate. Choose 50 to favor the 441 * current high speed devices. For Dream like devices, 100 is a better 442 * choice. Maybe make this in the buildspec later. 443 * (Update 12/14/2010: changed to 0 since current device should be able to 444 * handle the raw events and Map team voted to have the raw events too. 445 */ 446 private static final int TOUCH_SENT_INTERVAL = 0; 447 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 448 449 /** 450 * Helper class to get velocity for fling 451 */ 452 VelocityTracker mVelocityTracker; 453 private int mMaximumFling; 454 private float mLastVelocity; 455 private float mLastVelX; 456 private float mLastVelY; 457 458 // The id of the native layer being scrolled. 459 private int mScrollingLayer; 460 private Rect mScrollingLayerRect = new Rect(); 461 462 // only trigger accelerated fling if the new velocity is at least 463 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 464 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 465 466 /** 467 * Touch mode 468 */ 469 private int mTouchMode = TOUCH_DONE_MODE; 470 private static final int TOUCH_INIT_MODE = 1; 471 private static final int TOUCH_DRAG_START_MODE = 2; 472 private static final int TOUCH_DRAG_MODE = 3; 473 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 474 private static final int TOUCH_SHORTPRESS_MODE = 5; 475 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 476 private static final int TOUCH_DONE_MODE = 7; 477 private static final int TOUCH_PINCH_DRAG = 8; 478 private static final int TOUCH_DRAG_LAYER_MODE = 9; 479 480 // Whether to forward the touch events to WebCore 481 // Can only be set by WebKit via JNI. 482 private boolean mForwardTouchEvents = false; 483 484 // Whether to prevent default during touch. The initial value depends on 485 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 486 // for touch down. Otherwise UI will wait for the answer of the first 487 // confirmed move before taking over the control. 488 private static final int PREVENT_DEFAULT_NO = 0; 489 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 490 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 491 private static final int PREVENT_DEFAULT_YES = 3; 492 private static final int PREVENT_DEFAULT_IGNORE = 4; 493 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 494 495 // true when the touch movement exceeds the slop 496 private boolean mConfirmMove; 497 498 // if true, touch events will be first processed by WebCore, if prevent 499 // default is not set, the UI will continue handle them. 500 private boolean mDeferTouchProcess; 501 502 // to avoid interfering with the current touch events, track them 503 // separately. Currently no snapping or fling in the deferred process mode 504 private int mDeferTouchMode = TOUCH_DONE_MODE; 505 private float mLastDeferTouchX; 506 private float mLastDeferTouchY; 507 508 // To keep track of whether the current drag was initiated by a WebTextView, 509 // so that we know not to hide the cursor 510 boolean mDragFromTextInput; 511 512 // Whether or not to draw the cursor ring. 513 private boolean mDrawCursorRing = true; 514 515 // true if onPause has been called (and not onResume) 516 private boolean mIsPaused; 517 518 private HitTestResult mInitialHitTestResult; 519 520 /** 521 * Customizable constant 522 */ 523 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 524 private int mTouchSlopSquare; 525 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 526 private int mDoubleTapSlopSquare; 527 // pre-computed density adjusted navigation slop 528 private int mNavSlop; 529 // This should be ViewConfiguration.getTapTimeout() 530 // But system time out is 100ms, which is too short for the browser. 531 // In the browser, if it switches out of tap too soon, jump tap won't work. 532 private static final int TAP_TIMEOUT = 200; 533 // This should be ViewConfiguration.getLongPressTimeout() 534 // But system time out is 500ms, which is too short for the browser. 535 // With a short timeout, it's difficult to treat trigger a short press. 536 private static final int LONG_PRESS_TIMEOUT = 1000; 537 // needed to avoid flinging after a pause of no movement 538 private static final int MIN_FLING_TIME = 250; 539 // draw unfiltered after drag is held without movement 540 private static final int MOTIONLESS_TIME = 100; 541 // The amount of content to overlap between two screens when going through 542 // pages with the space bar, in pixels. 543 private static final int PAGE_SCROLL_OVERLAP = 24; 544 545 /** 546 * These prevent calling requestLayout if either dimension is fixed. This 547 * depends on the layout parameters and the measure specs. 548 */ 549 boolean mWidthCanMeasure; 550 boolean mHeightCanMeasure; 551 552 // Remember the last dimensions we sent to the native side so we can avoid 553 // sending the same dimensions more than once. 554 int mLastWidthSent; 555 int mLastHeightSent; 556 // Since view height sent to webkit could be fixed to avoid relayout, this 557 // value records the last sent actual view height. 558 int mLastActualHeightSent; 559 560 private int mContentWidth; // cache of value from WebViewCore 561 private int mContentHeight; // cache of value from WebViewCore 562 563 // Need to have the separate control for horizontal and vertical scrollbar 564 // style than the View's single scrollbar style 565 private boolean mOverlayHorizontalScrollbar = true; 566 private boolean mOverlayVerticalScrollbar = false; 567 568 // our standard speed. this way small distances will be traversed in less 569 // time than large distances, but we cap the duration, so that very large 570 // distances won't take too long to get there. 571 private static final int STD_SPEED = 480; // pixels per second 572 // time for the longest scroll animation 573 private static final int MAX_DURATION = 750; // milliseconds 574 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 575 576 // Used by OverScrollGlow 577 OverScroller mScroller; 578 579 private boolean mInOverScrollMode = false; 580 private static Paint mOverScrollBackground; 581 private static Paint mOverScrollBorder; 582 583 private boolean mWrapContent; 584 private static final int MOTIONLESS_FALSE = 0; 585 private static final int MOTIONLESS_PENDING = 1; 586 private static final int MOTIONLESS_TRUE = 2; 587 private static final int MOTIONLESS_IGNORE = 3; 588 private int mHeldMotionless; 589 590 // An instance for injecting accessibility in WebViews with disabled 591 // JavaScript or ones for which no accessibility script exists 592 private AccessibilityInjector mAccessibilityInjector; 593 594 // flag indicating if accessibility script is injected so we 595 // know to handle Shift and arrows natively first 596 private boolean mAccessibilityScriptInjected; 597 598 // the color used to highlight the touch rectangles 599 private static final int mHightlightColor = 0x33000000; 600 // the round corner for the highlight path 601 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 602 // the region indicating where the user touched on the screen 603 private Region mTouchHighlightRegion = new Region(); 604 // the paint for the touch highlight 605 private Paint mTouchHightlightPaint; 606 // debug only 607 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 608 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 609 private Paint mTouchCrossHairColor; 610 private int mTouchHighlightX; 611 private int mTouchHighlightY; 612 613 // Basically this proxy is used to tell the Video to update layer tree at 614 // SetBaseLayer time and to pause when WebView paused. 615 private HTML5VideoViewProxy mHTML5VideoViewProxy; 616 617 /* 618 * Private message ids 619 */ 620 private static final int REMEMBER_PASSWORD = 1; 621 private static final int NEVER_REMEMBER_PASSWORD = 2; 622 private static final int SWITCH_TO_SHORTPRESS = 3; 623 private static final int SWITCH_TO_LONGPRESS = 4; 624 private static final int RELEASE_SINGLE_TAP = 5; 625 private static final int REQUEST_FORM_DATA = 6; 626 private static final int RESUME_WEBCORE_PRIORITY = 7; 627 private static final int DRAG_HELD_MOTIONLESS = 8; 628 private static final int AWAKEN_SCROLL_BARS = 9; 629 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 630 private static final int SCROLL_SELECT_TEXT = 11; 631 632 633 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 634 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 635 636 /* 637 * Package message ids 638 */ 639 static final int SCROLL_TO_MSG_ID = 101; 640 static final int NEW_PICTURE_MSG_ID = 105; 641 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 642 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 643 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 644 static final int UPDATE_ZOOM_RANGE = 109; 645 static final int UNHANDLED_NAV_KEY = 110; 646 static final int CLEAR_TEXT_ENTRY = 111; 647 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 648 static final int SHOW_RECT_MSG_ID = 113; 649 static final int LONG_PRESS_CENTER = 114; 650 static final int PREVENT_TOUCH_ID = 115; 651 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 652 // obj=Rect in doc coordinates 653 static final int INVAL_RECT_MSG_ID = 117; 654 static final int REQUEST_KEYBOARD = 118; 655 static final int DO_MOTION_UP = 119; 656 static final int SHOW_FULLSCREEN = 120; 657 static final int HIDE_FULLSCREEN = 121; 658 static final int DOM_FOCUS_CHANGED = 122; 659 static final int REPLACE_BASE_CONTENT = 123; 660 static final int FORM_DID_BLUR = 124; 661 static final int RETURN_LABEL = 125; 662 static final int FIND_AGAIN = 126; 663 static final int CENTER_FIT_RECT = 127; 664 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 665 static final int SET_SCROLLBAR_MODES = 129; 666 static final int SELECTION_STRING_CHANGED = 130; 667 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 668 static final int SAVE_WEBARCHIVE_FINISHED = 132; 669 670 static final int SET_AUTOFILLABLE = 133; 671 static final int AUTOFILL_COMPLETE = 134; 672 673 static final int SELECT_AT = 135; 674 static final int SCREEN_ON = 136; 675 static final int ENTER_FULLSCREEN_VIDEO = 137; 676 677 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 678 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 679 680 static final String[] HandlerPrivateDebugString = { 681 "REMEMBER_PASSWORD", // = 1; 682 "NEVER_REMEMBER_PASSWORD", // = 2; 683 "SWITCH_TO_SHORTPRESS", // = 3; 684 "SWITCH_TO_LONGPRESS", // = 4; 685 "RELEASE_SINGLE_TAP", // = 5; 686 "REQUEST_FORM_DATA", // = 6; 687 "RESUME_WEBCORE_PRIORITY", // = 7; 688 "DRAG_HELD_MOTIONLESS", // = 8; 689 "AWAKEN_SCROLL_BARS", // = 9; 690 "PREVENT_DEFAULT_TIMEOUT", // = 10; 691 "SCROLL_SELECT_TEXT" // = 11; 692 }; 693 694 static final String[] HandlerPackageDebugString = { 695 "SCROLL_TO_MSG_ID", // = 101; 696 "102", // = 102; 697 "103", // = 103; 698 "104", // = 104; 699 "NEW_PICTURE_MSG_ID", // = 105; 700 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 701 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 702 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 703 "UPDATE_ZOOM_RANGE", // = 109; 704 "UNHANDLED_NAV_KEY", // = 110; 705 "CLEAR_TEXT_ENTRY", // = 111; 706 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 707 "SHOW_RECT_MSG_ID", // = 113; 708 "LONG_PRESS_CENTER", // = 114; 709 "PREVENT_TOUCH_ID", // = 115; 710 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 711 "INVAL_RECT_MSG_ID", // = 117; 712 "REQUEST_KEYBOARD", // = 118; 713 "DO_MOTION_UP", // = 119; 714 "SHOW_FULLSCREEN", // = 120; 715 "HIDE_FULLSCREEN", // = 121; 716 "DOM_FOCUS_CHANGED", // = 122; 717 "REPLACE_BASE_CONTENT", // = 123; 718 "FORM_DID_BLUR", // = 124; 719 "RETURN_LABEL", // = 125; 720 "FIND_AGAIN", // = 126; 721 "CENTER_FIT_RECT", // = 127; 722 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 723 "SET_SCROLLBAR_MODES", // = 129; 724 "SELECTION_STRING_CHANGED", // = 130; 725 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 726 "SAVE_WEBARCHIVE_FINISHED", // = 132; 727 "SET_AUTOFILLABLE", // = 133; 728 "AUTOFILL_COMPLETE", // = 134; 729 "SELECT_AT", // = 135; 730 "SCREEN_ON", // = 136; 731 "ENTER_FULLSCREEN_VIDEO" // = 137; 732 }; 733 734 // If the site doesn't use the viewport meta tag to specify the viewport, 735 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 736 static final int DEFAULT_VIEWPORT_WIDTH = 980; 737 738 // normally we try to fit the content to the minimum preferred width 739 // calculated by the Webkit. To avoid the bad behavior when some site's 740 // minimum preferred width keeps growing when changing the viewport width or 741 // the minimum preferred width is huge, an upper limit is needed. 742 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 743 744 // initial scale in percent. 0 means using default. 745 private int mInitialScaleInPercent = 0; 746 747 // Whether or not a scroll event should be sent to webkit. This is only set 748 // to false when restoring the scroll position. 749 private boolean mSendScrollEvent = true; 750 751 private int mSnapScrollMode = SNAP_NONE; 752 private static final int SNAP_NONE = 0; 753 private static final int SNAP_LOCK = 1; // not a separate state 754 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 755 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 756 private boolean mSnapPositive; 757 758 // keep these in sync with their counterparts in WebView.cpp 759 private static final int DRAW_EXTRAS_NONE = 0; 760 private static final int DRAW_EXTRAS_FIND = 1; 761 private static final int DRAW_EXTRAS_SELECTION = 2; 762 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 763 764 // keep this in sync with WebCore:ScrollbarMode in WebKit 765 private static final int SCROLLBAR_AUTO = 0; 766 private static final int SCROLLBAR_ALWAYSOFF = 1; 767 // as we auto fade scrollbar, this is ignored. 768 private static final int SCROLLBAR_ALWAYSON = 2; 769 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 770 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 771 772 // constants for determining script injection strategy 773 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 774 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 775 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 776 777 // the alias via which accessibility JavaScript interface is exposed 778 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 779 780 // JavaScript to inject the script chooser which will 781 // pick the right script for the current URL 782 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 783 "javascript:(function() {" + 784 " var chooser = document.createElement('script');" + 785 " chooser.type = 'text/javascript';" + 786 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 787 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 788 " })();"; 789 790 // Regular expression that matches the "axs" URL parameter. 791 // The value of 0 means the accessibility script is opted out 792 // The value of 1 means the accessibility script is already injected 793 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 794 795 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 796 private TextToSpeech mTextToSpeech; 797 798 // variable to cache the above pattern in case accessibility is enabled. 799 private Pattern mMatchAxsUrlParameterPattern; 800 801 /** 802 * Max distance to overscroll by in pixels. 803 * This how far content can be pulled beyond its normal bounds by the user. 804 */ 805 private int mOverscrollDistance; 806 807 /** 808 * Max distance to overfling by in pixels. 809 * This is how far flinged content can move beyond the end of its normal bounds. 810 */ 811 private int mOverflingDistance; 812 813 private OverScrollGlow mOverScrollGlow; 814 815 // Used to match key downs and key ups 816 private Vector<Integer> mKeysPressed; 817 818 /* package */ static boolean mLogEvent = true; 819 820 // for event log 821 private long mLastTouchUpTime = 0; 822 823 private WebViewCore.AutoFillData mAutoFillData; 824 825 private static boolean sNotificationsEnabled = true; 826 827 /** 828 * URI scheme for telephone number 829 */ 830 public static final String SCHEME_TEL = "tel:"; 831 /** 832 * URI scheme for email address 833 */ 834 public static final String SCHEME_MAILTO = "mailto:"; 835 /** 836 * URI scheme for map address 837 */ 838 public static final String SCHEME_GEO = "geo:0,0?q="; 839 840 private int mBackgroundColor = Color.WHITE; 841 842 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 843 private int mAutoScrollX = 0; 844 private int mAutoScrollY = 0; 845 private int mMinAutoScrollX = 0; 846 private int mMaxAutoScrollX = 0; 847 private int mMinAutoScrollY = 0; 848 private int mMaxAutoScrollY = 0; 849 private Rect mScrollingLayerBounds = new Rect(); 850 private boolean mSentAutoScrollMessage = false; 851 852 // used for serializing asynchronously handled touch events. 853 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 854 855 // Used to notify listeners of a new picture. 856 private PictureListener mPictureListener; 857 /** 858 * Interface to listen for new pictures as they change. 859 * @deprecated This interface is now obsolete. 860 */ 861 @Deprecated 862 public interface PictureListener { 863 /** 864 * Notify the listener that the picture has changed. 865 * @param view The WebView that owns the picture. 866 * @param picture The new picture. 867 * @deprecated This method is now obsolete. 868 */ 869 @Deprecated 870 public void onNewPicture(WebView view, Picture picture); 871 } 872 873 // FIXME: Want to make this public, but need to change the API file. 874 public /*static*/ class HitTestResult { 875 /** 876 * Default HitTestResult, where the target is unknown 877 */ 878 public static final int UNKNOWN_TYPE = 0; 879 /** 880 * @deprecated This type is no longer used. 881 */ 882 @Deprecated 883 public static final int ANCHOR_TYPE = 1; 884 /** 885 * HitTestResult for hitting a phone number 886 */ 887 public static final int PHONE_TYPE = 2; 888 /** 889 * HitTestResult for hitting a map address 890 */ 891 public static final int GEO_TYPE = 3; 892 /** 893 * HitTestResult for hitting an email address 894 */ 895 public static final int EMAIL_TYPE = 4; 896 /** 897 * HitTestResult for hitting an HTML::img tag 898 */ 899 public static final int IMAGE_TYPE = 5; 900 /** 901 * @deprecated This type is no longer used. 902 */ 903 @Deprecated 904 public static final int IMAGE_ANCHOR_TYPE = 6; 905 /** 906 * HitTestResult for hitting a HTML::a tag with src=http 907 */ 908 public static final int SRC_ANCHOR_TYPE = 7; 909 /** 910 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 911 */ 912 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 913 /** 914 * HitTestResult for hitting an edit text area 915 */ 916 public static final int EDIT_TEXT_TYPE = 9; 917 918 private int mType; 919 private String mExtra; 920 921 HitTestResult() { 922 mType = UNKNOWN_TYPE; 923 } 924 925 private void setType(int type) { 926 mType = type; 927 } 928 929 private void setExtra(String extra) { 930 mExtra = extra; 931 } 932 933 public int getType() { 934 return mType; 935 } 936 937 public String getExtra() { 938 return mExtra; 939 } 940 } 941 942 /** 943 * Construct a new WebView with a Context object. 944 * @param context A Context object used to access application assets. 945 */ 946 public WebView(Context context) { 947 this(context, null); 948 } 949 950 /** 951 * Construct a new WebView with layout parameters. 952 * @param context A Context object used to access application assets. 953 * @param attrs An AttributeSet passed to our parent. 954 */ 955 public WebView(Context context, AttributeSet attrs) { 956 this(context, attrs, com.android.internal.R.attr.webViewStyle); 957 } 958 959 /** 960 * Construct a new WebView with layout parameters and a default style. 961 * @param context A Context object used to access application assets. 962 * @param attrs An AttributeSet passed to our parent. 963 * @param defStyle The default style resource ID. 964 */ 965 public WebView(Context context, AttributeSet attrs, int defStyle) { 966 this(context, attrs, defStyle, false); 967 } 968 969 /** 970 * Construct a new WebView with layout parameters and a default style. 971 * @param context A Context object used to access application assets. 972 * @param attrs An AttributeSet passed to our parent. 973 * @param defStyle The default style resource ID. 974 */ 975 public WebView(Context context, AttributeSet attrs, int defStyle, 976 boolean privateBrowsing) { 977 this(context, attrs, defStyle, null, privateBrowsing); 978 } 979 980 /** 981 * Construct a new WebView with layout parameters, a default style and a set 982 * of custom Javscript interfaces to be added to the WebView at initialization 983 * time. This guarantees that these interfaces will be available when the JS 984 * context is initialized. 985 * @param context A Context object used to access application assets. 986 * @param attrs An AttributeSet passed to our parent. 987 * @param defStyle The default style resource ID. 988 * @param javaScriptInterfaces is a Map of interface names, as keys, and 989 * object implementing those interfaces, as values. 990 * @hide pending API council approval. 991 */ 992 protected WebView(Context context, AttributeSet attrs, int defStyle, 993 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 994 super(context, attrs, defStyle); 995 checkThread(); 996 997 // Used by the chrome stack to find application paths 998 JniUtil.setContext(context); 999 1000 mCallbackProxy = new CallbackProxy(context, this); 1001 mViewManager = new ViewManager(this); 1002 L10nUtils.setApplicationContext(context.getApplicationContext()); 1003 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1004 mDatabase = WebViewDatabase.getInstance(context); 1005 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1006 mZoomManager = new ZoomManager(this, mCallbackProxy); 1007 1008 /* The init method must follow the creation of certain member variables, 1009 * such as the mZoomManager. 1010 */ 1011 init(); 1012 setupPackageListener(context); 1013 setupProxyListener(context); 1014 updateMultiTouchSupport(context); 1015 1016 if (privateBrowsing) { 1017 startPrivateBrowsing(); 1018 } 1019 1020 mAutoFillData = new WebViewCore.AutoFillData(); 1021 } 1022 1023 private static class ProxyReceiver extends BroadcastReceiver { 1024 @Override 1025 public void onReceive(Context context, Intent intent) { 1026 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1027 handleProxyBroadcast(intent); 1028 } 1029 } 1030 } 1031 1032 /* 1033 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1034 */ 1035 private static ProxyReceiver sProxyReceiver; 1036 1037 /* 1038 * @param context This method expects this to be a valid context 1039 */ 1040 private static synchronized void setupProxyListener(Context context) { 1041 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1042 return; 1043 } 1044 IntentFilter filter = new IntentFilter(); 1045 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1046 sProxyReceiver = new ProxyReceiver(); 1047 Intent currentProxy = context.getApplicationContext().registerReceiver( 1048 sProxyReceiver, filter); 1049 if (currentProxy != null) { 1050 handleProxyBroadcast(currentProxy); 1051 } 1052 } 1053 1054 /* 1055 * @param context This method expects this to be a valid context 1056 */ 1057 private static synchronized void disableProxyListener(Context context) { 1058 if (sProxyReceiver == null) 1059 return; 1060 1061 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1062 sProxyReceiver = null; 1063 } 1064 1065 private static void handleProxyBroadcast(Intent intent) { 1066 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1067 if (proxyProperties == null || proxyProperties.getHost() == null) { 1068 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1069 return; 1070 } 1071 1072 String host = proxyProperties.getHost(); 1073 int port = proxyProperties.getPort(); 1074 if (port != 0) 1075 host += ":" + port; 1076 1077 // TODO: Handle exclusion list 1078 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1079 // there 1080 String exclusionList = proxyProperties.getExclusionList(); 1081 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1082 } 1083 1084 /* 1085 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1086 * or ACTION_PACKAGE_REMOVED. 1087 */ 1088 private static boolean sPackageInstallationReceiverAdded = false; 1089 1090 /* 1091 * A set of Google packages we monitor for the 1092 * navigator.isApplicationInstalled() API. Add additional packages as 1093 * needed. 1094 */ 1095 private static Set<String> sGoogleApps; 1096 static { 1097 sGoogleApps = new HashSet<String>(); 1098 sGoogleApps.add("com.google.android.youtube"); 1099 } 1100 1101 private static class PackageListener extends BroadcastReceiver { 1102 @Override 1103 public void onReceive(Context context, Intent intent) { 1104 final String action = intent.getAction(); 1105 final String packageName = intent.getData().getSchemeSpecificPart(); 1106 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1107 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1108 // if it is replacing, refreshPlugins() when adding 1109 return; 1110 } 1111 1112 if (sGoogleApps.contains(packageName)) { 1113 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1114 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1115 } else { 1116 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1117 } 1118 } 1119 1120 PluginManager pm = PluginManager.getInstance(context); 1121 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1122 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1123 } 1124 } 1125 } 1126 1127 private void setupPackageListener(Context context) { 1128 1129 /* 1130 * we must synchronize the instance check and the creation of the 1131 * receiver to ensure that only ONE receiver exists for all WebView 1132 * instances. 1133 */ 1134 synchronized (WebView.class) { 1135 1136 // if the receiver already exists then we do not need to register it 1137 // again 1138 if (sPackageInstallationReceiverAdded) { 1139 return; 1140 } 1141 1142 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1143 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1144 filter.addDataScheme("package"); 1145 BroadcastReceiver packageListener = new PackageListener(); 1146 context.getApplicationContext().registerReceiver(packageListener, filter); 1147 sPackageInstallationReceiverAdded = true; 1148 } 1149 1150 // check if any of the monitored apps are already installed 1151 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1152 1153 @Override 1154 protected Set<String> doInBackground(Void... unused) { 1155 Set<String> installedPackages = new HashSet<String>(); 1156 PackageManager pm = mContext.getPackageManager(); 1157 for (String name : sGoogleApps) { 1158 try { 1159 PackageInfo pInfo = pm.getPackageInfo(name, 1160 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1161 installedPackages.add(name); 1162 } catch (PackageManager.NameNotFoundException e) { 1163 // package not found 1164 } 1165 } 1166 return installedPackages; 1167 } 1168 1169 // Executes on the UI thread 1170 @Override 1171 protected void onPostExecute(Set<String> installedPackages) { 1172 if (mWebViewCore != null) { 1173 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1174 } 1175 } 1176 }; 1177 task.execute(); 1178 } 1179 1180 void updateMultiTouchSupport(Context context) { 1181 mZoomManager.updateMultiTouchSupport(context); 1182 } 1183 1184 private void init() { 1185 setWillNotDraw(false); 1186 setFocusable(true); 1187 setFocusableInTouchMode(true); 1188 setClickable(true); 1189 setLongClickable(true); 1190 1191 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1192 int slop = configuration.getScaledTouchSlop(); 1193 mTouchSlopSquare = slop * slop; 1194 mMinLockSnapReverseDistance = slop; 1195 slop = configuration.getScaledDoubleTapSlop(); 1196 mDoubleTapSlopSquare = slop * slop; 1197 final float density = getContext().getResources().getDisplayMetrics().density; 1198 // use one line height, 16 based on our current default font, for how 1199 // far we allow a touch be away from the edge of a link 1200 mNavSlop = (int) (16 * density); 1201 mZoomManager.init(density); 1202 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1203 1204 // Compute the inverse of the density squared. 1205 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1206 1207 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1208 mOverflingDistance = configuration.getScaledOverflingDistance(); 1209 1210 setScrollBarStyle(super.getScrollBarStyle()); 1211 // Initially use a size of two, since the user is likely to only hold 1212 // down two keys at a time (shift + another key) 1213 mKeysPressed = new Vector<Integer>(2); 1214 mHTML5VideoViewProxy = null ; 1215 } 1216 1217 @Override 1218 public boolean shouldDelayChildPressedState() { 1219 return true; 1220 } 1221 1222 /** 1223 * Adds accessibility APIs to JavaScript. 1224 * 1225 * Note: This method is responsible to performing the necessary 1226 * check if the accessibility APIs should be exposed. 1227 */ 1228 private void addAccessibilityApisToJavaScript() { 1229 if (AccessibilityManager.getInstance(mContext).isEnabled() 1230 && getSettings().getJavaScriptEnabled()) { 1231 // exposing the TTS for now ... 1232 mTextToSpeech = new TextToSpeech(getContext(), null); 1233 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1234 } 1235 } 1236 1237 /** 1238 * Removes accessibility APIs from JavaScript. 1239 */ 1240 private void removeAccessibilityApisFromJavaScript() { 1241 // exposing the TTS for now ... 1242 if (mTextToSpeech != null) { 1243 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1244 mTextToSpeech.shutdown(); 1245 mTextToSpeech = null; 1246 } 1247 } 1248 1249 @Override 1250 public void setOverScrollMode(int mode) { 1251 super.setOverScrollMode(mode); 1252 if (mode != OVER_SCROLL_NEVER) { 1253 if (mOverScrollGlow == null) { 1254 mOverScrollGlow = new OverScrollGlow(this); 1255 } 1256 } else { 1257 mOverScrollGlow = null; 1258 } 1259 } 1260 1261 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1262 final float density = mContext.getResources().getDisplayMetrics().density 1263 * 100 / zoomDensity; 1264 mNavSlop = (int) (16 * density); 1265 mZoomManager.updateDefaultZoomDensity(density); 1266 } 1267 1268 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1269 String password, final Message resumeMsg) { 1270 boolean rVal = false; 1271 if (resumeMsg == null) { 1272 // null resumeMsg implies saving password silently 1273 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1274 } else { 1275 final Message remember = mPrivateHandler.obtainMessage( 1276 REMEMBER_PASSWORD); 1277 remember.getData().putString("host", schemePlusHost); 1278 remember.getData().putString("username", username); 1279 remember.getData().putString("password", password); 1280 remember.obj = resumeMsg; 1281 1282 final Message neverRemember = mPrivateHandler.obtainMessage( 1283 NEVER_REMEMBER_PASSWORD); 1284 neverRemember.getData().putString("host", schemePlusHost); 1285 neverRemember.getData().putString("username", username); 1286 neverRemember.getData().putString("password", password); 1287 neverRemember.obj = resumeMsg; 1288 1289 new AlertDialog.Builder(getContext()) 1290 .setTitle(com.android.internal.R.string.save_password_label) 1291 .setMessage(com.android.internal.R.string.save_password_message) 1292 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1293 new DialogInterface.OnClickListener() { 1294 public void onClick(DialogInterface dialog, int which) { 1295 resumeMsg.sendToTarget(); 1296 } 1297 }) 1298 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1299 new DialogInterface.OnClickListener() { 1300 public void onClick(DialogInterface dialog, int which) { 1301 remember.sendToTarget(); 1302 } 1303 }) 1304 .setNegativeButton(com.android.internal.R.string.save_password_never, 1305 new DialogInterface.OnClickListener() { 1306 public void onClick(DialogInterface dialog, int which) { 1307 neverRemember.sendToTarget(); 1308 } 1309 }) 1310 .setOnCancelListener(new OnCancelListener() { 1311 public void onCancel(DialogInterface dialog) { 1312 resumeMsg.sendToTarget(); 1313 } 1314 }).show(); 1315 // Return true so that WebViewCore will pause while the dialog is 1316 // up. 1317 rVal = true; 1318 } 1319 return rVal; 1320 } 1321 1322 @Override 1323 public void setScrollBarStyle(int style) { 1324 if (style == View.SCROLLBARS_INSIDE_INSET 1325 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1326 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1327 } else { 1328 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1329 } 1330 super.setScrollBarStyle(style); 1331 } 1332 1333 /** 1334 * Specify whether the horizontal scrollbar has overlay style. 1335 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1336 */ 1337 public void setHorizontalScrollbarOverlay(boolean overlay) { 1338 checkThread(); 1339 mOverlayHorizontalScrollbar = overlay; 1340 } 1341 1342 /** 1343 * Specify whether the vertical scrollbar has overlay style. 1344 * @param overlay TRUE if vertical scrollbar should have overlay style. 1345 */ 1346 public void setVerticalScrollbarOverlay(boolean overlay) { 1347 checkThread(); 1348 mOverlayVerticalScrollbar = overlay; 1349 } 1350 1351 /** 1352 * Return whether horizontal scrollbar has overlay style 1353 * @return TRUE if horizontal scrollbar has overlay style. 1354 */ 1355 public boolean overlayHorizontalScrollbar() { 1356 checkThread(); 1357 return mOverlayHorizontalScrollbar; 1358 } 1359 1360 /** 1361 * Return whether vertical scrollbar has overlay style 1362 * @return TRUE if vertical scrollbar has overlay style. 1363 */ 1364 public boolean overlayVerticalScrollbar() { 1365 checkThread(); 1366 return mOverlayVerticalScrollbar; 1367 } 1368 1369 /* 1370 * Return the width of the view where the content of WebView should render 1371 * to. 1372 * Note: this can be called from WebCoreThread. 1373 */ 1374 /* package */ int getViewWidth() { 1375 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1376 return getWidth(); 1377 } else { 1378 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1379 } 1380 } 1381 1382 /** 1383 * returns the height of the titlebarview (if any). Does not care about 1384 * scrolling 1385 * @hide 1386 */ 1387 protected int getTitleHeight() { 1388 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1389 } 1390 1391 /** 1392 * Return the amount of the titlebarview (if any) that is visible 1393 * 1394 * @deprecated This method is now obsolete. 1395 */ 1396 public int getVisibleTitleHeight() { 1397 checkThread(); 1398 return getVisibleTitleHeightImpl(); 1399 } 1400 1401 private int getVisibleTitleHeightImpl() { 1402 // need to restrict mScrollY due to over scroll 1403 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1404 } 1405 1406 /* 1407 * Return the height of the view where the content of WebView should render 1408 * to. Note that this excludes mTitleBar, if there is one. 1409 * Note: this can be called from WebCoreThread. 1410 */ 1411 /* package */ int getViewHeight() { 1412 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1413 } 1414 1415 private int getViewHeightWithTitle() { 1416 int height = getHeight(); 1417 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1418 height -= getHorizontalScrollbarHeight(); 1419 } 1420 return height; 1421 } 1422 1423 /** 1424 * @return The SSL certificate for the main top-level page or null if 1425 * there is no certificate (the site is not secure). 1426 */ 1427 public SslCertificate getCertificate() { 1428 checkThread(); 1429 return mCertificate; 1430 } 1431 1432 /** 1433 * Sets the SSL certificate for the main top-level page. 1434 */ 1435 public void setCertificate(SslCertificate certificate) { 1436 checkThread(); 1437 if (DebugFlags.WEB_VIEW) { 1438 Log.v(LOGTAG, "setCertificate=" + certificate); 1439 } 1440 // here, the certificate can be null (if the site is not secure) 1441 mCertificate = certificate; 1442 } 1443 1444 //------------------------------------------------------------------------- 1445 // Methods called by activity 1446 //------------------------------------------------------------------------- 1447 1448 /** 1449 * Save the username and password for a particular host in the WebView's 1450 * internal database. 1451 * @param host The host that required the credentials. 1452 * @param username The username for the given host. 1453 * @param password The password for the given host. 1454 */ 1455 public void savePassword(String host, String username, String password) { 1456 checkThread(); 1457 mDatabase.setUsernamePassword(host, username, password); 1458 } 1459 1460 /** 1461 * Set the HTTP authentication credentials for a given host and realm. 1462 * 1463 * @param host The host for the credentials. 1464 * @param realm The realm for the credentials. 1465 * @param username The username for the password. If it is null, it means 1466 * password can't be saved. 1467 * @param password The password 1468 */ 1469 public void setHttpAuthUsernamePassword(String host, String realm, 1470 String username, String password) { 1471 checkThread(); 1472 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1473 } 1474 1475 /** 1476 * Retrieve the HTTP authentication username and password for a given 1477 * host & realm pair 1478 * 1479 * @param host The host for which the credentials apply. 1480 * @param realm The realm for which the credentials apply. 1481 * @return String[] if found, String[0] is username, which can be null and 1482 * String[1] is password. Return null if it can't find anything. 1483 */ 1484 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1485 checkThread(); 1486 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1487 } 1488 1489 /** 1490 * Remove Find or Select ActionModes, if active. 1491 */ 1492 private void clearActionModes() { 1493 if (mSelectCallback != null) { 1494 mSelectCallback.finish(); 1495 } 1496 if (mFindCallback != null) { 1497 mFindCallback.finish(); 1498 } 1499 } 1500 1501 /** 1502 * Called to clear state when moving from one page to another, or changing 1503 * in some other way that makes elements associated with the current page 1504 * (such as WebTextView or ActionModes) no longer relevant. 1505 */ 1506 private void clearHelpers() { 1507 clearTextEntry(); 1508 clearActionModes(); 1509 dismissFullScreenMode(); 1510 } 1511 1512 /** 1513 * Destroy the internal state of the WebView. This method should be called 1514 * after the WebView has been removed from the view system. No other 1515 * methods may be called on a WebView after destroy. 1516 */ 1517 public void destroy() { 1518 checkThread(); 1519 destroyImpl(); 1520 } 1521 1522 private void destroyImpl() { 1523 clearHelpers(); 1524 if (mListBoxDialog != null) { 1525 mListBoxDialog.dismiss(); 1526 mListBoxDialog = null; 1527 } 1528 if (mNativeClass != 0) nativeStopGL(); 1529 if (mWebViewCore != null) { 1530 // Set the handlers to null before destroying WebViewCore so no 1531 // more messages will be posted. 1532 mCallbackProxy.setWebViewClient(null); 1533 mCallbackProxy.setWebChromeClient(null); 1534 // Tell WebViewCore to destroy itself 1535 synchronized (this) { 1536 WebViewCore webViewCore = mWebViewCore; 1537 mWebViewCore = null; // prevent using partial webViewCore 1538 webViewCore.destroy(); 1539 } 1540 // Remove any pending messages that might not be serviced yet. 1541 mPrivateHandler.removeCallbacksAndMessages(null); 1542 mCallbackProxy.removeCallbacksAndMessages(null); 1543 // Wake up the WebCore thread just in case it is waiting for a 1544 // JavaScript dialog. 1545 synchronized (mCallbackProxy) { 1546 mCallbackProxy.notify(); 1547 } 1548 } 1549 if (mNativeClass != 0) { 1550 nativeDestroy(); 1551 mNativeClass = 0; 1552 } 1553 } 1554 1555 /** 1556 * Enables platform notifications of data state and proxy changes. 1557 * Notifications are enabled by default. 1558 * 1559 * @deprecated This method is now obsolete. 1560 */ 1561 @Deprecated 1562 public static void enablePlatformNotifications() { 1563 checkThread(); 1564 synchronized (WebView.class) { 1565 Network.enablePlatformNotifications(); 1566 sNotificationsEnabled = true; 1567 Context context = JniUtil.getContext(); 1568 if (context != null) 1569 setupProxyListener(context); 1570 } 1571 } 1572 1573 /** 1574 * Disables platform notifications of data state and proxy changes. 1575 * Notifications are enabled by default. 1576 * 1577 * @deprecated This method is now obsolete. 1578 */ 1579 @Deprecated 1580 public static void disablePlatformNotifications() { 1581 checkThread(); 1582 synchronized (WebView.class) { 1583 Network.disablePlatformNotifications(); 1584 sNotificationsEnabled = false; 1585 Context context = JniUtil.getContext(); 1586 if (context != null) 1587 disableProxyListener(context); 1588 } 1589 } 1590 1591 /** 1592 * Sets JavaScript engine flags. 1593 * 1594 * @param flags JS engine flags in a String 1595 * 1596 * @hide pending API solidification 1597 */ 1598 public void setJsFlags(String flags) { 1599 checkThread(); 1600 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1601 } 1602 1603 /** 1604 * Inform WebView of the network state. This is used to set 1605 * the JavaScript property window.navigator.isOnline and 1606 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1607 * @param networkUp boolean indicating if network is available 1608 */ 1609 public void setNetworkAvailable(boolean networkUp) { 1610 checkThread(); 1611 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1612 networkUp ? 1 : 0, 0); 1613 } 1614 1615 /** 1616 * Inform WebView about the current network type. 1617 * {@hide} 1618 */ 1619 public void setNetworkType(String type, String subtype) { 1620 checkThread(); 1621 Map<String, String> map = new HashMap<String, String>(); 1622 map.put("type", type); 1623 map.put("subtype", subtype); 1624 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1625 } 1626 /** 1627 * Save the state of this WebView used in 1628 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1629 * method no longer stores the display data for this WebView. The previous 1630 * behavior could potentially leak files if {@link #restoreState} was never 1631 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1632 * and restoring the display data. 1633 * @param outState The Bundle to store the WebView state. 1634 * @return The same copy of the back/forward list used to save the state. If 1635 * saveState fails, the returned list will be null. 1636 * @see #savePicture 1637 * @see #restorePicture 1638 */ 1639 public WebBackForwardList saveState(Bundle outState) { 1640 checkThread(); 1641 if (outState == null) { 1642 return null; 1643 } 1644 // We grab a copy of the back/forward list because a client of WebView 1645 // may have invalidated the history list by calling clearHistory. 1646 WebBackForwardList list = copyBackForwardList(); 1647 final int currentIndex = list.getCurrentIndex(); 1648 final int size = list.getSize(); 1649 // We should fail saving the state if the list is empty or the index is 1650 // not in a valid range. 1651 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1652 return null; 1653 } 1654 outState.putInt("index", currentIndex); 1655 // FIXME: This should just be a byte[][] instead of ArrayList but 1656 // Parcel.java does not have the code to handle multi-dimensional 1657 // arrays. 1658 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1659 for (int i = 0; i < size; i++) { 1660 WebHistoryItem item = list.getItemAtIndex(i); 1661 if (null == item) { 1662 // FIXME: this shouldn't happen 1663 // need to determine how item got set to null 1664 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1665 return null; 1666 } 1667 byte[] data = item.getFlattenedData(); 1668 if (data == null) { 1669 // It would be very odd to not have any data for a given history 1670 // item. And we will fail to rebuild the history list without 1671 // flattened data. 1672 return null; 1673 } 1674 history.add(data); 1675 } 1676 outState.putSerializable("history", history); 1677 if (mCertificate != null) { 1678 outState.putBundle("certificate", 1679 SslCertificate.saveState(mCertificate)); 1680 } 1681 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1682 mZoomManager.saveZoomState(outState); 1683 return list; 1684 } 1685 1686 /** 1687 * Save the current display data to the Bundle given. Used in conjunction 1688 * with {@link #saveState}. 1689 * @param b A Bundle to store the display data. 1690 * @param dest The file to store the serialized picture data. Will be 1691 * overwritten with this WebView's picture data. 1692 * @return True if the picture was successfully saved. 1693 * @deprecated This method is now obsolete. 1694 */ 1695 @Deprecated 1696 public boolean savePicture(Bundle b, final File dest) { 1697 checkThread(); 1698 if (dest == null || b == null) { 1699 return false; 1700 } 1701 final Picture p = capturePicture(); 1702 // Use a temporary file while writing to ensure the destination file 1703 // contains valid data. 1704 final File temp = new File(dest.getPath() + ".writing"); 1705 new Thread(new Runnable() { 1706 public void run() { 1707 FileOutputStream out = null; 1708 try { 1709 out = new FileOutputStream(temp); 1710 p.writeToStream(out); 1711 // Writing the picture succeeded, rename the temporary file 1712 // to the destination. 1713 temp.renameTo(dest); 1714 } catch (Exception e) { 1715 // too late to do anything about it. 1716 } finally { 1717 if (out != null) { 1718 try { 1719 out.close(); 1720 } catch (Exception e) { 1721 // Can't do anything about that 1722 } 1723 } 1724 temp.delete(); 1725 } 1726 } 1727 }).start(); 1728 // now update the bundle 1729 b.putInt("scrollX", mScrollX); 1730 b.putInt("scrollY", mScrollY); 1731 mZoomManager.saveZoomState(b); 1732 return true; 1733 } 1734 1735 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1736 int sx = b.getInt("scrollX", 0); 1737 int sy = b.getInt("scrollY", 0); 1738 1739 mDrawHistory = true; 1740 mHistoryPicture = p; 1741 1742 mScrollX = sx; 1743 mScrollY = sy; 1744 mZoomManager.restoreZoomState(b); 1745 final float scale = mZoomManager.getScale(); 1746 mHistoryWidth = Math.round(p.getWidth() * scale); 1747 mHistoryHeight = Math.round(p.getHeight() * scale); 1748 1749 invalidate(); 1750 } 1751 1752 /** 1753 * Restore the display data that was save in {@link #savePicture}. Used in 1754 * conjunction with {@link #restoreState}. 1755 * @param b A Bundle containing the saved display data. 1756 * @param src The file where the picture data was stored. 1757 * @return True if the picture was successfully restored. 1758 * @deprecated This method is now obsolete. 1759 */ 1760 @Deprecated 1761 public boolean restorePicture(Bundle b, File src) { 1762 checkThread(); 1763 if (src == null || b == null) { 1764 return false; 1765 } 1766 if (!src.exists()) { 1767 return false; 1768 } 1769 try { 1770 final FileInputStream in = new FileInputStream(src); 1771 final Bundle copy = new Bundle(b); 1772 new Thread(new Runnable() { 1773 public void run() { 1774 try { 1775 final Picture p = Picture.createFromStream(in); 1776 if (p != null) { 1777 // Post a runnable on the main thread to update the 1778 // history picture fields. 1779 mPrivateHandler.post(new Runnable() { 1780 public void run() { 1781 restoreHistoryPictureFields(p, copy); 1782 } 1783 }); 1784 } 1785 } finally { 1786 try { 1787 in.close(); 1788 } catch (Exception e) { 1789 // Nothing we can do now. 1790 } 1791 } 1792 } 1793 }).start(); 1794 } catch (FileNotFoundException e){ 1795 e.printStackTrace(); 1796 } 1797 return true; 1798 } 1799 1800 /** 1801 * Restore the state of this WebView from the given map used in 1802 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1803 * be called to restore the state of the WebView before using the object. If 1804 * it is called after the WebView has had a chance to build state (load 1805 * pages, create a back/forward list, etc.) there may be undesirable 1806 * side-effects. Please note that this method no longer restores the 1807 * display data for this WebView. See {@link #savePicture} and {@link 1808 * #restorePicture} for saving and restoring the display data. 1809 * @param inState The incoming Bundle of state. 1810 * @return The restored back/forward list or null if restoreState failed. 1811 * @see #savePicture 1812 * @see #restorePicture 1813 */ 1814 public WebBackForwardList restoreState(Bundle inState) { 1815 checkThread(); 1816 WebBackForwardList returnList = null; 1817 if (inState == null) { 1818 return returnList; 1819 } 1820 if (inState.containsKey("index") && inState.containsKey("history")) { 1821 mCertificate = SslCertificate.restoreState( 1822 inState.getBundle("certificate")); 1823 1824 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1825 final int index = inState.getInt("index"); 1826 // We can't use a clone of the list because we need to modify the 1827 // shared copy, so synchronize instead to prevent concurrent 1828 // modifications. 1829 synchronized (list) { 1830 final List<byte[]> history = 1831 (List<byte[]>) inState.getSerializable("history"); 1832 final int size = history.size(); 1833 // Check the index bounds so we don't crash in native code while 1834 // restoring the history index. 1835 if (index < 0 || index >= size) { 1836 return null; 1837 } 1838 for (int i = 0; i < size; i++) { 1839 byte[] data = history.remove(0); 1840 if (data == null) { 1841 // If we somehow have null data, we cannot reconstruct 1842 // the item and thus our history list cannot be rebuilt. 1843 return null; 1844 } 1845 WebHistoryItem item = new WebHistoryItem(data); 1846 list.addHistoryItem(item); 1847 } 1848 // Grab the most recent copy to return to the caller. 1849 returnList = copyBackForwardList(); 1850 // Update the copy to have the correct index. 1851 returnList.setCurrentIndex(index); 1852 } 1853 // Restore private browsing setting. 1854 if (inState.getBoolean("privateBrowsingEnabled")) { 1855 getSettings().setPrivateBrowsingEnabled(true); 1856 } 1857 mZoomManager.restoreZoomState(inState); 1858 // Remove all pending messages because we are restoring previous 1859 // state. 1860 mWebViewCore.removeMessages(); 1861 // Send a restore state message. 1862 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1863 } 1864 return returnList; 1865 } 1866 1867 /** 1868 * Load the given url with the extra headers. 1869 * @param url The url of the resource to load. 1870 * @param extraHeaders The extra headers sent with this url. This should not 1871 * include the common headers like "user-agent". If it does, it 1872 * will be replaced by the intrinsic value of the WebView. 1873 */ 1874 public void loadUrl(String url, Map<String, String> extraHeaders) { 1875 checkThread(); 1876 loadUrlImpl(url, extraHeaders); 1877 } 1878 1879 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 1880 switchOutDrawHistory(); 1881 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1882 arg.mUrl = url; 1883 arg.mExtraHeaders = extraHeaders; 1884 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1885 clearHelpers(); 1886 } 1887 1888 /** 1889 * Load the given url. 1890 * @param url The url of the resource to load. 1891 */ 1892 public void loadUrl(String url) { 1893 checkThread(); 1894 loadUrlImpl(url); 1895 } 1896 1897 private void loadUrlImpl(String url) { 1898 if (url == null) { 1899 return; 1900 } 1901 loadUrlImpl(url, null); 1902 } 1903 1904 /** 1905 * Load the url with postData using "POST" method into the WebView. If url 1906 * is not a network url, it will be loaded with {link 1907 * {@link #loadUrl(String)} instead. 1908 * 1909 * @param url The url of the resource to load. 1910 * @param postData The data will be passed to "POST" request. 1911 */ 1912 public void postUrl(String url, byte[] postData) { 1913 checkThread(); 1914 if (URLUtil.isNetworkUrl(url)) { 1915 switchOutDrawHistory(); 1916 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1917 arg.mUrl = url; 1918 arg.mPostData = postData; 1919 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1920 clearHelpers(); 1921 } else { 1922 loadUrlImpl(url); 1923 } 1924 } 1925 1926 /** 1927 * Load the given data into the WebView. This will load the data into 1928 * WebView using the data: scheme. Content loaded through this mechanism 1929 * does not have the ability to load content from the network. 1930 * @param data A String of data in the given encoding. The date must 1931 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1932 * %27, %3f respectively. 1933 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1934 * @param encoding The encoding of the data. i.e. utf-8, base64 1935 */ 1936 public void loadData(String data, String mimeType, String encoding) { 1937 checkThread(); 1938 loadDataImpl(data, mimeType, encoding); 1939 } 1940 1941 private void loadDataImpl(String data, String mimeType, String encoding) { 1942 loadUrlImpl("data:" + mimeType + ";" + encoding + "," + data); 1943 } 1944 1945 /** 1946 * Load the given data into the WebView, use the provided URL as the base 1947 * URL for the content. The base URL is the URL that represents the page 1948 * that is loaded through this interface. As such, it is used to resolve any 1949 * relative URLs. The historyUrl is used for the history entry. 1950 * <p> 1951 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1952 * files through "file:///android_asset/" for the sub resources is more 1953 * restricted. If you provide null or empty string as baseUrl, you won't be 1954 * able to access asset files. If the baseUrl is anything other than 1955 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1956 * sub resources. 1957 * 1958 * @param baseUrl Url to resolve relative paths with, if null defaults to 1959 * "about:blank" 1960 * @param data A String of data in the given encoding. 1961 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1962 * defaults to "text/html" 1963 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1964 * @param historyUrl URL to use as the history entry. Can be null. 1965 */ 1966 public void loadDataWithBaseURL(String baseUrl, String data, 1967 String mimeType, String encoding, String historyUrl) { 1968 checkThread(); 1969 1970 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1971 loadDataImpl(data, mimeType, encoding); 1972 return; 1973 } 1974 switchOutDrawHistory(); 1975 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1976 arg.mBaseUrl = baseUrl; 1977 arg.mData = data; 1978 arg.mMimeType = mimeType; 1979 arg.mEncoding = encoding; 1980 arg.mHistoryUrl = historyUrl; 1981 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1982 clearHelpers(); 1983 } 1984 1985 /** 1986 * Saves the current view as a web archive. 1987 * 1988 * @param filename The filename where the archive should be placed. 1989 */ 1990 public void saveWebArchive(String filename) { 1991 checkThread(); 1992 saveWebArchiveImpl(filename, false, null); 1993 } 1994 1995 /* package */ static class SaveWebArchiveMessage { 1996 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1997 mBasename = basename; 1998 mAutoname = autoname; 1999 mCallback = callback; 2000 } 2001 2002 /* package */ final String mBasename; 2003 /* package */ final boolean mAutoname; 2004 /* package */ final ValueCallback<String> mCallback; 2005 /* package */ String mResultFile; 2006 } 2007 2008 /** 2009 * Saves the current view as a web archive. 2010 * 2011 * @param basename The filename where the archive should be placed. 2012 * @param autoname If false, takes basename to be a file. If true, basename 2013 * is assumed to be a directory in which a filename will be 2014 * chosen according to the url of the current page. 2015 * @param callback Called after the web archive has been saved. The 2016 * parameter for onReceiveValue will either be the filename 2017 * under which the file was saved, or null if saving the 2018 * file failed. 2019 */ 2020 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2021 checkThread(); 2022 saveWebArchiveImpl(basename, autoname, callback); 2023 } 2024 2025 private void saveWebArchiveImpl(String basename, boolean autoname, 2026 ValueCallback<String> callback) { 2027 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2028 new SaveWebArchiveMessage(basename, autoname, callback)); 2029 } 2030 2031 /** 2032 * Stop the current load. 2033 */ 2034 public void stopLoading() { 2035 checkThread(); 2036 // TODO: should we clear all the messages in the queue before sending 2037 // STOP_LOADING? 2038 switchOutDrawHistory(); 2039 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2040 } 2041 2042 /** 2043 * Reload the current url. 2044 */ 2045 public void reload() { 2046 checkThread(); 2047 clearHelpers(); 2048 switchOutDrawHistory(); 2049 mWebViewCore.sendMessage(EventHub.RELOAD); 2050 } 2051 2052 /** 2053 * Return true if this WebView has a back history item. 2054 * @return True iff this WebView has a back history item. 2055 */ 2056 public boolean canGoBack() { 2057 checkThread(); 2058 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2059 synchronized (l) { 2060 if (l.getClearPending()) { 2061 return false; 2062 } else { 2063 return l.getCurrentIndex() > 0; 2064 } 2065 } 2066 } 2067 2068 /** 2069 * Go back in the history of this WebView. 2070 */ 2071 public void goBack() { 2072 checkThread(); 2073 goBackOrForwardImpl(-1); 2074 } 2075 2076 /** 2077 * Return true if this WebView has a forward history item. 2078 * @return True iff this Webview has a forward history item. 2079 */ 2080 public boolean canGoForward() { 2081 checkThread(); 2082 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2083 synchronized (l) { 2084 if (l.getClearPending()) { 2085 return false; 2086 } else { 2087 return l.getCurrentIndex() < l.getSize() - 1; 2088 } 2089 } 2090 } 2091 2092 /** 2093 * Go forward in the history of this WebView. 2094 */ 2095 public void goForward() { 2096 checkThread(); 2097 goBackOrForwardImpl(1); 2098 } 2099 2100 /** 2101 * Return true if the page can go back or forward the given 2102 * number of steps. 2103 * @param steps The negative or positive number of steps to move the 2104 * history. 2105 */ 2106 public boolean canGoBackOrForward(int steps) { 2107 checkThread(); 2108 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2109 synchronized (l) { 2110 if (l.getClearPending()) { 2111 return false; 2112 } else { 2113 int newIndex = l.getCurrentIndex() + steps; 2114 return newIndex >= 0 && newIndex < l.getSize(); 2115 } 2116 } 2117 } 2118 2119 /** 2120 * Go to the history item that is the number of steps away from 2121 * the current item. Steps is negative if backward and positive 2122 * if forward. 2123 * @param steps The number of steps to take back or forward in the back 2124 * forward list. 2125 */ 2126 public void goBackOrForward(int steps) { 2127 checkThread(); 2128 goBackOrForwardImpl(steps); 2129 } 2130 2131 private void goBackOrForwardImpl(int steps) { 2132 goBackOrForward(steps, false); 2133 } 2134 2135 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2136 if (steps != 0) { 2137 clearHelpers(); 2138 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2139 ignoreSnapshot ? 1 : 0); 2140 } 2141 } 2142 2143 /** 2144 * Returns true if private browsing is enabled in this WebView. 2145 */ 2146 public boolean isPrivateBrowsingEnabled() { 2147 checkThread(); 2148 return getSettings().isPrivateBrowsingEnabled(); 2149 } 2150 2151 private void startPrivateBrowsing() { 2152 getSettings().setPrivateBrowsingEnabled(true); 2153 } 2154 2155 private boolean extendScroll(int y) { 2156 int finalY = mScroller.getFinalY(); 2157 int newY = pinLocY(finalY + y); 2158 if (newY == finalY) return false; 2159 mScroller.setFinalY(newY); 2160 mScroller.extendDuration(computeDuration(0, y)); 2161 return true; 2162 } 2163 2164 /** 2165 * Scroll the contents of the view up by half the view size 2166 * @param top true to jump to the top of the page 2167 * @return true if the page was scrolled 2168 */ 2169 public boolean pageUp(boolean top) { 2170 checkThread(); 2171 if (mNativeClass == 0) { 2172 return false; 2173 } 2174 nativeClearCursor(); // start next trackball movement from page edge 2175 if (top) { 2176 // go to the top of the document 2177 return pinScrollTo(mScrollX, 0, true, 0); 2178 } 2179 // Page up 2180 int h = getHeight(); 2181 int y; 2182 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2183 y = -h + PAGE_SCROLL_OVERLAP; 2184 } else { 2185 y = -h / 2; 2186 } 2187 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2188 : extendScroll(y); 2189 } 2190 2191 /** 2192 * Scroll the contents of the view down by half the page size 2193 * @param bottom true to jump to bottom of page 2194 * @return true if the page was scrolled 2195 */ 2196 public boolean pageDown(boolean bottom) { 2197 checkThread(); 2198 if (mNativeClass == 0) { 2199 return false; 2200 } 2201 nativeClearCursor(); // start next trackball movement from page edge 2202 if (bottom) { 2203 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2204 } 2205 // Page down. 2206 int h = getHeight(); 2207 int y; 2208 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2209 y = h - PAGE_SCROLL_OVERLAP; 2210 } else { 2211 y = h / 2; 2212 } 2213 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2214 : extendScroll(y); 2215 } 2216 2217 /** 2218 * Clear the view so that onDraw() will draw nothing but white background, 2219 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2220 */ 2221 public void clearView() { 2222 checkThread(); 2223 mContentWidth = 0; 2224 mContentHeight = 0; 2225 setBaseLayer(0, null, false, false); 2226 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2227 } 2228 2229 /** 2230 * Return a new picture that captures the current display of the webview. 2231 * This is a copy of the display, and will be unaffected if the webview 2232 * later loads a different URL. 2233 * 2234 * @return a picture containing the current contents of the view. Note this 2235 * picture is of the entire document, and is not restricted to the 2236 * bounds of the view. 2237 */ 2238 public Picture capturePicture() { 2239 checkThread(); 2240 if (mNativeClass == 0) return null; 2241 Picture result = new Picture(); 2242 nativeCopyBaseContentToPicture(result); 2243 return result; 2244 } 2245 2246 /** 2247 * Return true if the browser is displaying a TextView for text input. 2248 */ 2249 private boolean inEditingMode() { 2250 return mWebTextView != null && mWebTextView.getParent() != null; 2251 } 2252 2253 /** 2254 * Remove the WebTextView. 2255 */ 2256 private void clearTextEntry() { 2257 if (inEditingMode()) { 2258 mWebTextView.remove(); 2259 } else { 2260 // The keyboard may be open with the WebView as the served view 2261 hideSoftKeyboard(); 2262 } 2263 } 2264 2265 /** 2266 * Return the current scale of the WebView 2267 * @return The current scale. 2268 */ 2269 public float getScale() { 2270 checkThread(); 2271 return mZoomManager.getScale(); 2272 } 2273 2274 /** 2275 * Set the initial scale for the WebView. 0 means default. If 2276 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2277 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2278 * WebView starts will this value as initial scale. 2279 * 2280 * @param scaleInPercent The initial scale in percent. 2281 */ 2282 public void setInitialScale(int scaleInPercent) { 2283 checkThread(); 2284 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2285 } 2286 2287 /** 2288 * Invoke the graphical zoom picker widget for this WebView. This will 2289 * result in the zoom widget appearing on the screen to control the zoom 2290 * level of this WebView. 2291 */ 2292 public void invokeZoomPicker() { 2293 checkThread(); 2294 if (!getSettings().supportZoom()) { 2295 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2296 return; 2297 } 2298 clearHelpers(); 2299 mZoomManager.invokeZoomPicker(); 2300 } 2301 2302 /** 2303 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2304 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2305 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2306 * anchor does not have a url or if it is a JavaScript url, the type will 2307 * be UNKNOWN_TYPE and the url has to be retrieved through 2308 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2309 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2310 * the "extra" field. A type of 2311 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2312 * a child node. If a phone number is found, the HitTestResult type is set 2313 * to PHONE_TYPE and the phone number is set in the "extra" field of 2314 * HitTestResult. If a map address is found, the HitTestResult type is set 2315 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2316 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2317 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2318 * HitTestResult type is set to UNKNOWN_TYPE. 2319 */ 2320 public HitTestResult getHitTestResult() { 2321 checkThread(); 2322 return hitTestResult(mInitialHitTestResult); 2323 } 2324 2325 private HitTestResult hitTestResult(HitTestResult fallback) { 2326 if (mNativeClass == 0) { 2327 return null; 2328 } 2329 2330 HitTestResult result = new HitTestResult(); 2331 if (nativeHasCursorNode()) { 2332 if (nativeCursorIsTextInput()) { 2333 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2334 } else { 2335 String text = nativeCursorText(); 2336 if (text != null) { 2337 if (text.startsWith(SCHEME_TEL)) { 2338 result.setType(HitTestResult.PHONE_TYPE); 2339 result.setExtra(text.substring(SCHEME_TEL.length())); 2340 } else if (text.startsWith(SCHEME_MAILTO)) { 2341 result.setType(HitTestResult.EMAIL_TYPE); 2342 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2343 } else if (text.startsWith(SCHEME_GEO)) { 2344 result.setType(HitTestResult.GEO_TYPE); 2345 result.setExtra(URLDecoder.decode(text 2346 .substring(SCHEME_GEO.length()))); 2347 } else if (nativeCursorIsAnchor()) { 2348 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2349 result.setExtra(text); 2350 } 2351 } 2352 } 2353 } else if (fallback != null) { 2354 /* If webkit causes a rebuild while the long press is in progress, 2355 * the cursor node may be reset, even if it is still around. This 2356 * uses the cursor node saved when the touch began. Since the 2357 * nativeImageURI below only changes the result if it is successful, 2358 * this uses the data beneath the touch if available or the original 2359 * tap data otherwise. 2360 */ 2361 Log.v(LOGTAG, "hitTestResult use fallback"); 2362 result = fallback; 2363 } 2364 int type = result.getType(); 2365 if (type == HitTestResult.UNKNOWN_TYPE 2366 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2367 // Now check to see if it is an image. 2368 int contentX = viewToContentX(mLastTouchX + mScrollX); 2369 int contentY = viewToContentY(mLastTouchY + mScrollY); 2370 String text = nativeImageURI(contentX, contentY); 2371 if (text != null) { 2372 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2373 HitTestResult.IMAGE_TYPE : 2374 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2375 result.setExtra(text); 2376 } 2377 } 2378 return result; 2379 } 2380 2381 // Called by JNI when the DOM has changed the focus. Clear the focus so 2382 // that new keys will go to the newly focused field 2383 private void domChangedFocus() { 2384 if (inEditingMode()) { 2385 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2386 } 2387 } 2388 /** 2389 * Request the anchor or image element URL at the last tapped point. 2390 * If hrefMsg is null, this method returns immediately and does not 2391 * dispatch hrefMsg to its target. If the tapped point hits an image, 2392 * an anchor, or an image in an anchor, the message associates 2393 * strings in named keys in its data. The value paired with the key 2394 * may be an empty string. 2395 * 2396 * @param hrefMsg This message will be dispatched with the result of the 2397 * request. The message data contains three keys: 2398 * - "url" returns the anchor's href attribute. 2399 * - "title" returns the anchor's text. 2400 * - "src" returns the image's src attribute. 2401 */ 2402 public void requestFocusNodeHref(Message hrefMsg) { 2403 checkThread(); 2404 if (hrefMsg == null) { 2405 return; 2406 } 2407 int contentX = viewToContentX(mLastTouchX + mScrollX); 2408 int contentY = viewToContentY(mLastTouchY + mScrollY); 2409 if (nativeHasCursorNode()) { 2410 Rect cursorBounds = nativeGetCursorRingBounds(); 2411 if (!cursorBounds.contains(contentX, contentY)) { 2412 int slop = viewToContentDimension(mNavSlop); 2413 cursorBounds.inset(-slop, -slop); 2414 if (cursorBounds.contains(contentX, contentY)) { 2415 contentX = (int) cursorBounds.centerX(); 2416 contentY = (int) cursorBounds.centerY(); 2417 } 2418 } 2419 } 2420 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2421 contentX, contentY, hrefMsg); 2422 } 2423 2424 /** 2425 * Request the url of the image last touched by the user. msg will be sent 2426 * to its target with a String representing the url as its object. 2427 * 2428 * @param msg This message will be dispatched with the result of the request 2429 * as the data member with "url" as key. The result can be null. 2430 */ 2431 public void requestImageRef(Message msg) { 2432 checkThread(); 2433 if (0 == mNativeClass) return; // client isn't initialized 2434 int contentX = viewToContentX(mLastTouchX + mScrollX); 2435 int contentY = viewToContentY(mLastTouchY + mScrollY); 2436 String ref = nativeImageURI(contentX, contentY); 2437 Bundle data = msg.getData(); 2438 data.putString("url", ref); 2439 msg.setData(data); 2440 msg.sendToTarget(); 2441 } 2442 2443 static int pinLoc(int x, int viewMax, int docMax) { 2444// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2445 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2446 // pin the short document to the top/left of the screen 2447 x = 0; 2448// Log.d(LOGTAG, "--- center " + x); 2449 } else if (x < 0) { 2450 x = 0; 2451// Log.d(LOGTAG, "--- zero"); 2452 } else if (x + viewMax > docMax) { 2453 x = docMax - viewMax; 2454// Log.d(LOGTAG, "--- pin " + x); 2455 } 2456 return x; 2457 } 2458 2459 // Expects x in view coordinates 2460 int pinLocX(int x) { 2461 if (mInOverScrollMode) return x; 2462 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2463 } 2464 2465 // Expects y in view coordinates 2466 int pinLocY(int y) { 2467 if (mInOverScrollMode) return y; 2468 return pinLoc(y, getViewHeightWithTitle(), 2469 computeRealVerticalScrollRange() + getTitleHeight()); 2470 } 2471 2472 /** 2473 * A title bar which is embedded in this WebView, and scrolls along with it 2474 * vertically, but not horizontally. 2475 */ 2476 private View mTitleBar; 2477 2478 /** 2479 * the title bar rendering gravity 2480 */ 2481 private int mTitleGravity; 2482 2483 /** 2484 * Add or remove a title bar to be embedded into the WebView, and scroll 2485 * along with it vertically, while remaining in view horizontally. Pass 2486 * null to remove the title bar from the WebView, and return to drawing 2487 * the WebView normally without translating to account for the title bar. 2488 * @hide 2489 */ 2490 public void setEmbeddedTitleBar(View v) { 2491 if (mTitleBar == v) return; 2492 if (mTitleBar != null) { 2493 removeView(mTitleBar); 2494 } 2495 if (null != v) { 2496 addView(v, new AbsoluteLayout.LayoutParams( 2497 ViewGroup.LayoutParams.MATCH_PARENT, 2498 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2499 } 2500 mTitleBar = v; 2501 } 2502 2503 /** 2504 * Set where to render the embedded title bar 2505 * NO_GRAVITY at the top of the page 2506 * TOP at the top of the screen 2507 * @hide 2508 */ 2509 public void setTitleBarGravity(int gravity) { 2510 mTitleGravity = gravity; 2511 // force refresh 2512 invalidate(); 2513 } 2514 2515 /** 2516 * Given a distance in view space, convert it to content space. Note: this 2517 * does not reflect translation, just scaling, so this should not be called 2518 * with coordinates, but should be called for dimensions like width or 2519 * height. 2520 */ 2521 private int viewToContentDimension(int d) { 2522 return Math.round(d * mZoomManager.getInvScale()); 2523 } 2524 2525 /** 2526 * Given an x coordinate in view space, convert it to content space. Also 2527 * may be used for absolute heights (such as for the WebTextView's 2528 * textSize, which is unaffected by the height of the title bar). 2529 */ 2530 /*package*/ int viewToContentX(int x) { 2531 return viewToContentDimension(x); 2532 } 2533 2534 /** 2535 * Given a y coordinate in view space, convert it to content space. 2536 * Takes into account the height of the title bar if there is one 2537 * embedded into the WebView. 2538 */ 2539 /*package*/ int viewToContentY(int y) { 2540 return viewToContentDimension(y - getTitleHeight()); 2541 } 2542 2543 /** 2544 * Given a x coordinate in view space, convert it to content space. 2545 * Returns the result as a float. 2546 */ 2547 private float viewToContentXf(int x) { 2548 return x * mZoomManager.getInvScale(); 2549 } 2550 2551 /** 2552 * Given a y coordinate in view space, convert it to content space. 2553 * Takes into account the height of the title bar if there is one 2554 * embedded into the WebView. Returns the result as a float. 2555 */ 2556 private float viewToContentYf(int y) { 2557 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2558 } 2559 2560 /** 2561 * Given a distance in content space, convert it to view space. Note: this 2562 * does not reflect translation, just scaling, so this should not be called 2563 * with coordinates, but should be called for dimensions like width or 2564 * height. 2565 */ 2566 /*package*/ int contentToViewDimension(int d) { 2567 return Math.round(d * mZoomManager.getScale()); 2568 } 2569 2570 /** 2571 * Given an x coordinate in content space, convert it to view 2572 * space. 2573 */ 2574 /*package*/ int contentToViewX(int x) { 2575 return contentToViewDimension(x); 2576 } 2577 2578 /** 2579 * Given a y coordinate in content space, convert it to view 2580 * space. Takes into account the height of the title bar. 2581 */ 2582 /*package*/ int contentToViewY(int y) { 2583 return contentToViewDimension(y) + getTitleHeight(); 2584 } 2585 2586 private Rect contentToViewRect(Rect x) { 2587 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2588 contentToViewX(x.right), contentToViewY(x.bottom)); 2589 } 2590 2591 /* To invalidate a rectangle in content coordinates, we need to transform 2592 the rect into view coordinates, so we can then call invalidate(...). 2593 2594 Normally, we would just call contentToView[XY](...), which eventually 2595 calls Math.round(coordinate * mActualScale). However, for invalidates, 2596 we need to account for the slop that occurs with antialiasing. To 2597 address that, we are a little more liberal in the size of the rect that 2598 we invalidate. 2599 2600 This liberal calculation calls floor() for the top/left, and ceil() for 2601 the bottom/right coordinates. This catches the possible extra pixels of 2602 antialiasing that we might have missed with just round(). 2603 */ 2604 2605 // Called by JNI to invalidate the View, given rectangle coordinates in 2606 // content space 2607 private void viewInvalidate(int l, int t, int r, int b) { 2608 final float scale = mZoomManager.getScale(); 2609 final int dy = getTitleHeight(); 2610 invalidate((int)Math.floor(l * scale), 2611 (int)Math.floor(t * scale) + dy, 2612 (int)Math.ceil(r * scale), 2613 (int)Math.ceil(b * scale) + dy); 2614 } 2615 2616 // Called by JNI to invalidate the View after a delay, given rectangle 2617 // coordinates in content space 2618 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2619 final float scale = mZoomManager.getScale(); 2620 final int dy = getTitleHeight(); 2621 postInvalidateDelayed(delay, 2622 (int)Math.floor(l * scale), 2623 (int)Math.floor(t * scale) + dy, 2624 (int)Math.ceil(r * scale), 2625 (int)Math.ceil(b * scale) + dy); 2626 } 2627 2628 private void invalidateContentRect(Rect r) { 2629 viewInvalidate(r.left, r.top, r.right, r.bottom); 2630 } 2631 2632 // stop the scroll animation, and don't let a subsequent fling add 2633 // to the existing velocity 2634 private void abortAnimation() { 2635 mScroller.abortAnimation(); 2636 mLastVelocity = 0; 2637 } 2638 2639 /* call from webcoreview.draw(), so we're still executing in the UI thread 2640 */ 2641 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2642 2643 // premature data from webkit, ignore 2644 if ((w | h) == 0) { 2645 return; 2646 } 2647 2648 // don't abort a scroll animation if we didn't change anything 2649 if (mContentWidth != w || mContentHeight != h) { 2650 // record new dimensions 2651 mContentWidth = w; 2652 mContentHeight = h; 2653 // If history Picture is drawn, don't update scroll. They will be 2654 // updated when we get out of that mode. 2655 if (!mDrawHistory) { 2656 // repin our scroll, taking into account the new content size 2657 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2658 if (!mScroller.isFinished()) { 2659 // We are in the middle of a scroll. Repin the final scroll 2660 // position. 2661 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2662 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2663 } 2664 } 2665 } 2666 contentSizeChanged(updateLayout); 2667 } 2668 2669 // Used to avoid sending many visible rect messages. 2670 private Rect mLastVisibleRectSent; 2671 private Rect mLastGlobalRect; 2672 2673 Rect sendOurVisibleRect() { 2674 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2675 Rect rect = new Rect(); 2676 calcOurContentVisibleRect(rect); 2677 // Rect.equals() checks for null input. 2678 if (!rect.equals(mLastVisibleRectSent)) { 2679 Point pos = new Point(rect.left, rect.top); 2680 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2681 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2682 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2683 mLastVisibleRectSent = rect; 2684 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2685 } 2686 Rect globalRect = new Rect(); 2687 if (getGlobalVisibleRect(globalRect) 2688 && !globalRect.equals(mLastGlobalRect)) { 2689 if (DebugFlags.WEB_VIEW) { 2690 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2691 + globalRect.top + ",r=" + globalRect.right + ",b=" 2692 + globalRect.bottom); 2693 } 2694 // TODO: the global offset is only used by windowRect() 2695 // in ChromeClientAndroid ; other clients such as touch 2696 // and mouse events could return view + screen relative points. 2697 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2698 mLastGlobalRect = globalRect; 2699 } 2700 return rect; 2701 } 2702 2703 // Sets r to be the visible rectangle of our webview in view coordinates 2704 private void calcOurVisibleRect(Rect r) { 2705 Point p = new Point(); 2706 getGlobalVisibleRect(r, p); 2707 r.offset(-p.x, -p.y); 2708 } 2709 2710 // Sets r to be our visible rectangle in content coordinates 2711 private void calcOurContentVisibleRect(Rect r) { 2712 calcOurVisibleRect(r); 2713 r.left = viewToContentX(r.left); 2714 // viewToContentY will remove the total height of the title bar. Add 2715 // the visible height back in to account for the fact that if the title 2716 // bar is partially visible, the part of the visible rect which is 2717 // displaying our content is displaced by that amount. 2718 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2719 r.right = viewToContentX(r.right); 2720 r.bottom = viewToContentY(r.bottom); 2721 } 2722 2723 // Sets r to be our visible rectangle in content coordinates. We use this 2724 // method on the native side to compute the position of the fixed layers. 2725 // Uses floating coordinates (necessary to correctly place elements when 2726 // the scale factor is not 1) 2727 private void calcOurContentVisibleRectF(RectF r) { 2728 Rect ri = new Rect(0,0,0,0); 2729 calcOurVisibleRect(ri); 2730 r.left = viewToContentXf(ri.left); 2731 // viewToContentY will remove the total height of the title bar. Add 2732 // the visible height back in to account for the fact that if the title 2733 // bar is partially visible, the part of the visible rect which is 2734 // displaying our content is displaced by that amount. 2735 r.top = viewToContentYf(ri.top + getVisibleTitleHeightImpl()); 2736 r.right = viewToContentXf(ri.right); 2737 r.bottom = viewToContentYf(ri.bottom); 2738 } 2739 2740 static class ViewSizeData { 2741 int mWidth; 2742 int mHeight; 2743 float mHeightWidthRatio; 2744 int mActualViewHeight; 2745 int mTextWrapWidth; 2746 int mAnchorX; 2747 int mAnchorY; 2748 float mScale; 2749 boolean mIgnoreHeight; 2750 } 2751 2752 /** 2753 * Compute unzoomed width and height, and if they differ from the last 2754 * values we sent, send them to webkit (to be used as new viewport) 2755 * 2756 * @param force ensures that the message is sent to webkit even if the width 2757 * or height has not changed since the last message 2758 * 2759 * @return true if new values were sent 2760 */ 2761 boolean sendViewSizeZoom(boolean force) { 2762 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2763 2764 int viewWidth = getViewWidth(); 2765 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2766 // This height could be fixed and be different from actual visible height. 2767 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2768 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2769 // Make the ratio more accurate than (newHeight / newWidth), since the 2770 // latter both are calculated and rounded. 2771 float heightWidthRatio = (float) viewHeight / viewWidth; 2772 /* 2773 * Because the native side may have already done a layout before the 2774 * View system was able to measure us, we have to send a height of 0 to 2775 * remove excess whitespace when we grow our width. This will trigger a 2776 * layout and a change in content size. This content size change will 2777 * mean that contentSizeChanged will either call this method directly or 2778 * indirectly from onSizeChanged. 2779 */ 2780 if (newWidth > mLastWidthSent && mWrapContent) { 2781 newHeight = 0; 2782 heightWidthRatio = 0; 2783 } 2784 // Actual visible content height. 2785 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2786 // Avoid sending another message if the dimensions have not changed. 2787 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2788 actualViewHeight != mLastActualHeightSent) { 2789 ViewSizeData data = new ViewSizeData(); 2790 data.mWidth = newWidth; 2791 data.mHeight = newHeight; 2792 data.mHeightWidthRatio = heightWidthRatio; 2793 data.mActualViewHeight = actualViewHeight; 2794 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2795 data.mScale = mZoomManager.getScale(); 2796 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2797 && !mHeightCanMeasure; 2798 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2799 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2800 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2801 mLastWidthSent = newWidth; 2802 mLastHeightSent = newHeight; 2803 mLastActualHeightSent = actualViewHeight; 2804 mZoomManager.clearDocumentAnchor(); 2805 return true; 2806 } 2807 return false; 2808 } 2809 2810 private int computeRealHorizontalScrollRange() { 2811 if (mDrawHistory) { 2812 return mHistoryWidth; 2813 } else { 2814 // to avoid rounding error caused unnecessary scrollbar, use floor 2815 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2816 } 2817 } 2818 2819 @Override 2820 protected int computeHorizontalScrollRange() { 2821 int range = computeRealHorizontalScrollRange(); 2822 2823 // Adjust reported range if overscrolled to compress the scroll bars 2824 final int scrollX = mScrollX; 2825 final int overscrollRight = computeMaxScrollX(); 2826 if (scrollX < 0) { 2827 range -= scrollX; 2828 } else if (scrollX > overscrollRight) { 2829 range += scrollX - overscrollRight; 2830 } 2831 2832 return range; 2833 } 2834 2835 @Override 2836 protected int computeHorizontalScrollOffset() { 2837 return Math.max(mScrollX, 0); 2838 } 2839 2840 private int computeRealVerticalScrollRange() { 2841 if (mDrawHistory) { 2842 return mHistoryHeight; 2843 } else { 2844 // to avoid rounding error caused unnecessary scrollbar, use floor 2845 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2846 } 2847 } 2848 2849 @Override 2850 protected int computeVerticalScrollRange() { 2851 int range = computeRealVerticalScrollRange(); 2852 2853 // Adjust reported range if overscrolled to compress the scroll bars 2854 final int scrollY = mScrollY; 2855 final int overscrollBottom = computeMaxScrollY(); 2856 if (scrollY < 0) { 2857 range -= scrollY; 2858 } else if (scrollY > overscrollBottom) { 2859 range += scrollY - overscrollBottom; 2860 } 2861 2862 return range; 2863 } 2864 2865 @Override 2866 protected int computeVerticalScrollOffset() { 2867 return Math.max(mScrollY - getTitleHeight(), 0); 2868 } 2869 2870 @Override 2871 protected int computeVerticalScrollExtent() { 2872 return getViewHeight(); 2873 } 2874 2875 /** @hide */ 2876 @Override 2877 protected void onDrawVerticalScrollBar(Canvas canvas, 2878 Drawable scrollBar, 2879 int l, int t, int r, int b) { 2880 if (mScrollY < 0) { 2881 t -= mScrollY; 2882 } 2883 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 2884 scrollBar.draw(canvas); 2885 } 2886 2887 @Override 2888 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2889 boolean clampedY) { 2890 // Special-case layer scrolling so that we do not trigger normal scroll 2891 // updating. 2892 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2893 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2894 mScrollingLayerRect.left = scrollX; 2895 mScrollingLayerRect.top = scrollY; 2896 invalidate(); 2897 return; 2898 } 2899 mInOverScrollMode = false; 2900 int maxX = computeMaxScrollX(); 2901 int maxY = computeMaxScrollY(); 2902 if (maxX == 0) { 2903 // do not over scroll x if the page just fits the screen 2904 scrollX = pinLocX(scrollX); 2905 } else if (scrollX < 0 || scrollX > maxX) { 2906 mInOverScrollMode = true; 2907 } 2908 if (scrollY < 0 || scrollY > maxY) { 2909 mInOverScrollMode = true; 2910 } 2911 2912 int oldX = mScrollX; 2913 int oldY = mScrollY; 2914 2915 super.scrollTo(scrollX, scrollY); 2916 2917 if (mOverScrollGlow != null) { 2918 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2919 } 2920 } 2921 2922 /** 2923 * Get the url for the current page. This is not always the same as the url 2924 * passed to WebViewClient.onPageStarted because although the load for 2925 * that url has begun, the current page may not have changed. 2926 * @return The url for the current page. 2927 */ 2928 public String getUrl() { 2929 checkThread(); 2930 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2931 return h != null ? h.getUrl() : null; 2932 } 2933 2934 /** 2935 * Get the original url for the current page. This is not always the same 2936 * as the url passed to WebViewClient.onPageStarted because although the 2937 * load for that url has begun, the current page may not have changed. 2938 * Also, there may have been redirects resulting in a different url to that 2939 * originally requested. 2940 * @return The url that was originally requested for the current page. 2941 */ 2942 public String getOriginalUrl() { 2943 checkThread(); 2944 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2945 return h != null ? h.getOriginalUrl() : null; 2946 } 2947 2948 /** 2949 * Get the title for the current page. This is the title of the current page 2950 * until WebViewClient.onReceivedTitle is called. 2951 * @return The title for the current page. 2952 */ 2953 public String getTitle() { 2954 checkThread(); 2955 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2956 return h != null ? h.getTitle() : null; 2957 } 2958 2959 /** 2960 * Get the favicon for the current page. This is the favicon of the current 2961 * page until WebViewClient.onReceivedIcon is called. 2962 * @return The favicon for the current page. 2963 */ 2964 public Bitmap getFavicon() { 2965 checkThread(); 2966 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2967 return h != null ? h.getFavicon() : null; 2968 } 2969 2970 /** 2971 * Get the touch icon url for the apple-touch-icon <link> element, or 2972 * a URL on this site's server pointing to the standard location of a 2973 * touch icon. 2974 * @hide 2975 */ 2976 public String getTouchIconUrl() { 2977 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2978 return h != null ? h.getTouchIconUrl() : null; 2979 } 2980 2981 /** 2982 * Get the progress for the current page. 2983 * @return The progress for the current page between 0 and 100. 2984 */ 2985 public int getProgress() { 2986 checkThread(); 2987 return mCallbackProxy.getProgress(); 2988 } 2989 2990 /** 2991 * @return the height of the HTML content. 2992 */ 2993 public int getContentHeight() { 2994 checkThread(); 2995 return mContentHeight; 2996 } 2997 2998 /** 2999 * @return the width of the HTML content. 3000 * @hide 3001 */ 3002 public int getContentWidth() { 3003 return mContentWidth; 3004 } 3005 3006 /** 3007 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3008 * is a global requests, not restricted to just this webview. This can be 3009 * useful if the application has been paused. 3010 */ 3011 public void pauseTimers() { 3012 checkThread(); 3013 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3014 } 3015 3016 /** 3017 * Resume all layout, parsing, and JavaScript timers for all webviews. 3018 * This will resume dispatching all timers. 3019 */ 3020 public void resumeTimers() { 3021 checkThread(); 3022 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3023 } 3024 3025 /** 3026 * Call this to pause any extra processing associated with this WebView and 3027 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3028 * is taken offscreen, this could be called to reduce unnecessary CPU or 3029 * network traffic. When the WebView is again "active", call onResume(). 3030 * 3031 * Note that this differs from pauseTimers(), which affects all WebViews. 3032 */ 3033 public void onPause() { 3034 checkThread(); 3035 if (!mIsPaused) { 3036 mIsPaused = true; 3037 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3038 // We want to pause the current playing video when switching out 3039 // from the current WebView/tab. 3040 if (mHTML5VideoViewProxy != null) { 3041 mHTML5VideoViewProxy.pauseAndDispatch(); 3042 } 3043 } 3044 } 3045 3046 /** 3047 * Call this to resume a WebView after a previous call to onPause(). 3048 */ 3049 public void onResume() { 3050 checkThread(); 3051 if (mIsPaused) { 3052 mIsPaused = false; 3053 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3054 } 3055 } 3056 3057 /** 3058 * Returns true if the view is paused, meaning onPause() was called. Calling 3059 * onResume() sets the paused state back to false. 3060 * @hide 3061 */ 3062 public boolean isPaused() { 3063 return mIsPaused; 3064 } 3065 3066 /** 3067 * Call this to inform the view that memory is low so that it can 3068 * free any available memory. 3069 */ 3070 public void freeMemory() { 3071 checkThread(); 3072 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3073 } 3074 3075 /** 3076 * Clear the resource cache. Note that the cache is per-application, so 3077 * this will clear the cache for all WebViews used. 3078 * 3079 * @param includeDiskFiles If false, only the RAM cache is cleared. 3080 */ 3081 public void clearCache(boolean includeDiskFiles) { 3082 checkThread(); 3083 // Note: this really needs to be a static method as it clears cache for all 3084 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3085 // we can't make this static. 3086 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3087 includeDiskFiles ? 1 : 0, 0); 3088 } 3089 3090 /** 3091 * Make sure that clearing the form data removes the adapter from the 3092 * currently focused textfield if there is one. 3093 */ 3094 public void clearFormData() { 3095 checkThread(); 3096 if (inEditingMode()) { 3097 AutoCompleteAdapter adapter = null; 3098 mWebTextView.setAdapterCustom(adapter); 3099 } 3100 } 3101 3102 /** 3103 * Tell the WebView to clear its internal back/forward list. 3104 */ 3105 public void clearHistory() { 3106 checkThread(); 3107 mCallbackProxy.getBackForwardList().setClearPending(); 3108 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3109 } 3110 3111 /** 3112 * Clear the SSL preferences table stored in response to proceeding with SSL 3113 * certificate errors. 3114 */ 3115 public void clearSslPreferences() { 3116 checkThread(); 3117 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3118 } 3119 3120 /** 3121 * Return the WebBackForwardList for this WebView. This contains the 3122 * back/forward list for use in querying each item in the history stack. 3123 * This is a copy of the private WebBackForwardList so it contains only a 3124 * snapshot of the current state. Multiple calls to this method may return 3125 * different objects. The object returned from this method will not be 3126 * updated to reflect any new state. 3127 */ 3128 public WebBackForwardList copyBackForwardList() { 3129 checkThread(); 3130 return mCallbackProxy.getBackForwardList().clone(); 3131 } 3132 3133 /* 3134 * Highlight and scroll to the next occurance of String in findAll. 3135 * Wraps the page infinitely, and scrolls. Must be called after 3136 * calling findAll. 3137 * 3138 * @param forward Direction to search. 3139 */ 3140 public void findNext(boolean forward) { 3141 checkThread(); 3142 if (0 == mNativeClass) return; // client isn't initialized 3143 nativeFindNext(forward); 3144 } 3145 3146 /* 3147 * Find all instances of find on the page and highlight them. 3148 * @param find String to find. 3149 * @return int The number of occurances of the String "find" 3150 * that were found. 3151 */ 3152 public int findAll(String find) { 3153 checkThread(); 3154 if (0 == mNativeClass) return 0; // client isn't initialized 3155 int result = find != null ? nativeFindAll(find.toLowerCase(), 3156 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3157 invalidate(); 3158 mLastFind = find; 3159 return result; 3160 } 3161 3162 /** 3163 * Start an ActionMode for finding text in this WebView. Only works if this 3164 * WebView is attached to the view system. 3165 * @param text If non-null, will be the initial text to search for. 3166 * Otherwise, the last String searched for in this WebView will 3167 * be used to start. 3168 * @param showIme If true, show the IME, assuming the user will begin typing. 3169 * If false and text is non-null, perform a find all. 3170 * @return boolean True if the find dialog is shown, false otherwise. 3171 */ 3172 public boolean showFindDialog(String text, boolean showIme) { 3173 checkThread(); 3174 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3175 if (getParent() == null || startActionMode(callback) == null) { 3176 // Could not start the action mode, so end Find on page 3177 return false; 3178 } 3179 mFindCallback = callback; 3180 setFindIsUp(true); 3181 mFindCallback.setWebView(this); 3182 if (showIme) { 3183 mFindCallback.showSoftInput(); 3184 } else if (text != null) { 3185 mFindCallback.setText(text); 3186 mFindCallback.findAll(); 3187 return true; 3188 } 3189 if (text == null) { 3190 text = mLastFind; 3191 } 3192 if (text != null) { 3193 mFindCallback.setText(text); 3194 } 3195 return true; 3196 } 3197 3198 /** 3199 * Keep track of the find callback so that we can remove its titlebar if 3200 * necessary. 3201 */ 3202 private FindActionModeCallback mFindCallback; 3203 3204 /** 3205 * Toggle whether the find dialog is showing, for both native and Java. 3206 */ 3207 private void setFindIsUp(boolean isUp) { 3208 mFindIsUp = isUp; 3209 if (0 == mNativeClass) return; // client isn't initialized 3210 nativeSetFindIsUp(isUp); 3211 } 3212 3213 /** 3214 * Return the index of the currently highlighted match. 3215 */ 3216 int findIndex() { 3217 if (0 == mNativeClass) return -1; 3218 return nativeFindIndex(); 3219 } 3220 3221 // Used to know whether the find dialog is open. Affects whether 3222 // or not we draw the highlights for matches. 3223 private boolean mFindIsUp; 3224 3225 // Keep track of the last string sent, so we can search again when find is 3226 // reopened. 3227 private String mLastFind; 3228 3229 /** 3230 * Return the first substring consisting of the address of a physical 3231 * location. Currently, only addresses in the United States are detected, 3232 * and consist of: 3233 * - a house number 3234 * - a street name 3235 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3236 * - a city name 3237 * - a state or territory, either spelled out or two-letter abbr. 3238 * - an optional 5 digit or 9 digit zip code. 3239 * 3240 * All names must be correctly capitalized, and the zip code, if present, 3241 * must be valid for the state. The street type must be a standard USPS 3242 * spelling or abbreviation. The state or territory must also be spelled 3243 * or abbreviated using USPS standards. The house number may not exceed 3244 * five digits. 3245 * @param addr The string to search for addresses. 3246 * 3247 * @return the address, or if no address is found, return null. 3248 */ 3249 public static String findAddress(String addr) { 3250 checkThread(); 3251 return findAddress(addr, false); 3252 } 3253 3254 /** 3255 * @hide 3256 * Return the first substring consisting of the address of a physical 3257 * location. Currently, only addresses in the United States are detected, 3258 * and consist of: 3259 * - a house number 3260 * - a street name 3261 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3262 * - a city name 3263 * - a state or territory, either spelled out or two-letter abbr. 3264 * - an optional 5 digit or 9 digit zip code. 3265 * 3266 * Names are optionally capitalized, and the zip code, if present, 3267 * must be valid for the state. The street type must be a standard USPS 3268 * spelling or abbreviation. The state or territory must also be spelled 3269 * or abbreviated using USPS standards. The house number may not exceed 3270 * five digits. 3271 * @param addr The string to search for addresses. 3272 * @param caseInsensitive addr Set to true to make search ignore case. 3273 * 3274 * @return the address, or if no address is found, return null. 3275 */ 3276 public static String findAddress(String addr, boolean caseInsensitive) { 3277 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3278 } 3279 3280 /* 3281 * Clear the highlighting surrounding text matches created by findAll. 3282 */ 3283 public void clearMatches() { 3284 checkThread(); 3285 if (mNativeClass == 0) 3286 return; 3287 nativeSetFindIsEmpty(); 3288 invalidate(); 3289 } 3290 3291 /** 3292 * Called when the find ActionMode ends. 3293 */ 3294 void notifyFindDialogDismissed() { 3295 mFindCallback = null; 3296 if (mWebViewCore == null) { 3297 return; 3298 } 3299 clearMatches(); 3300 setFindIsUp(false); 3301 // Now that the dialog has been removed, ensure that we scroll to a 3302 // location that is not beyond the end of the page. 3303 pinScrollTo(mScrollX, mScrollY, false, 0); 3304 invalidate(); 3305 } 3306 3307 /** 3308 * Query the document to see if it contains any image references. The 3309 * message object will be dispatched with arg1 being set to 1 if images 3310 * were found and 0 if the document does not reference any images. 3311 * @param response The message that will be dispatched with the result. 3312 */ 3313 public void documentHasImages(Message response) { 3314 checkThread(); 3315 if (response == null) { 3316 return; 3317 } 3318 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3319 } 3320 3321 /** 3322 * Request the scroller to abort any ongoing animation 3323 * 3324 * @hide 3325 */ 3326 public void stopScroll() { 3327 mScroller.forceFinished(true); 3328 mLastVelocity = 0; 3329 } 3330 3331 @Override 3332 public void computeScroll() { 3333 if (mScroller.computeScrollOffset()) { 3334 int oldX = mScrollX; 3335 int oldY = mScrollY; 3336 int x = mScroller.getCurrX(); 3337 int y = mScroller.getCurrY(); 3338 invalidate(); // So we draw again 3339 3340 if (!mScroller.isFinished()) { 3341 int rangeX = computeMaxScrollX(); 3342 int rangeY = computeMaxScrollY(); 3343 int overflingDistance = mOverflingDistance; 3344 3345 // Use the layer's scroll data if needed. 3346 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3347 oldX = mScrollingLayerRect.left; 3348 oldY = mScrollingLayerRect.top; 3349 rangeX = mScrollingLayerRect.right; 3350 rangeY = mScrollingLayerRect.bottom; 3351 // No overscrolling for layers. 3352 overflingDistance = 0; 3353 } 3354 3355 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3356 rangeX, rangeY, 3357 overflingDistance, overflingDistance, false); 3358 3359 if (mOverScrollGlow != null) { 3360 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3361 } 3362 } else { 3363 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3364 mScrollX = x; 3365 mScrollY = y; 3366 } else { 3367 // Update the layer position instead of WebView. 3368 nativeScrollLayer(mScrollingLayer, x, y); 3369 mScrollingLayerRect.left = x; 3370 mScrollingLayerRect.top = y; 3371 } 3372 abortAnimation(); 3373 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3374 WebViewCore.resumePriority(); 3375 if (!mSelectingText) { 3376 WebViewCore.resumeUpdatePicture(mWebViewCore); 3377 } 3378 if (oldX != mScrollX || oldY != mScrollY) { 3379 sendOurVisibleRect(); 3380 } 3381 } 3382 } else { 3383 super.computeScroll(); 3384 } 3385 } 3386 3387 private static int computeDuration(int dx, int dy) { 3388 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3389 int duration = distance * 1000 / STD_SPEED; 3390 return Math.min(duration, MAX_DURATION); 3391 } 3392 3393 // helper to pin the scrollBy parameters (already in view coordinates) 3394 // returns true if the scroll was changed 3395 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3396 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3397 } 3398 // helper to pin the scrollTo parameters (already in view coordinates) 3399 // returns true if the scroll was changed 3400 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3401 x = pinLocX(x); 3402 y = pinLocY(y); 3403 int dx = x - mScrollX; 3404 int dy = y - mScrollY; 3405 3406 if ((dx | dy) == 0) { 3407 return false; 3408 } 3409 abortAnimation(); 3410 if (animate) { 3411 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3412 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3413 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3414 awakenScrollBars(mScroller.getDuration()); 3415 invalidate(); 3416 } else { 3417 scrollTo(x, y); 3418 } 3419 return true; 3420 } 3421 3422 // Scale from content to view coordinates, and pin. 3423 // Also called by jni webview.cpp 3424 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3425 if (mDrawHistory) { 3426 // disallow WebView to change the scroll position as History Picture 3427 // is used in the view system. 3428 // TODO: as we switchOutDrawHistory when trackball or navigation 3429 // keys are hit, this should be safe. Right? 3430 return false; 3431 } 3432 cx = contentToViewDimension(cx); 3433 cy = contentToViewDimension(cy); 3434 if (mHeightCanMeasure) { 3435 // move our visible rect according to scroll request 3436 if (cy != 0) { 3437 Rect tempRect = new Rect(); 3438 calcOurVisibleRect(tempRect); 3439 tempRect.offset(cx, cy); 3440 requestRectangleOnScreen(tempRect); 3441 } 3442 // FIXME: We scroll horizontally no matter what because currently 3443 // ScrollView and ListView will not scroll horizontally. 3444 // FIXME: Why do we only scroll horizontally if there is no 3445 // vertical scroll? 3446// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3447 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3448 } else { 3449 return pinScrollBy(cx, cy, animate, 0); 3450 } 3451 } 3452 3453 /** 3454 * Called by CallbackProxy when the page starts loading. 3455 * @param url The URL of the page which has started loading. 3456 */ 3457 /* package */ void onPageStarted(String url) { 3458 // every time we start a new page, we want to reset the 3459 // WebView certificate: if the new site is secure, we 3460 // will reload it and get a new certificate set; 3461 // if the new site is not secure, the certificate must be 3462 // null, and that will be the case 3463 setCertificate(null); 3464 3465 // reset the flag since we set to true in if need after 3466 // loading is see onPageFinished(Url) 3467 mAccessibilityScriptInjected = false; 3468 } 3469 3470 /** 3471 * Called by CallbackProxy when the page finishes loading. 3472 * @param url The URL of the page which has finished loading. 3473 */ 3474 /* package */ void onPageFinished(String url) { 3475 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3476 // If the user is now on a different page, or has scrolled the page 3477 // past the point where the title bar is offscreen, ignore the 3478 // scroll request. 3479 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3480 && mScrollX == 0 && mScrollY == 0) { 3481 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3482 SLIDE_TITLE_DURATION); 3483 } 3484 mPageThatNeedsToSlideTitleBarOffScreen = null; 3485 } 3486 mZoomManager.onPageFinished(url); 3487 injectAccessibilityForUrl(url); 3488 } 3489 3490 /** 3491 * This method injects accessibility in the loaded document if accessibility 3492 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3493 * If no URL specific script is found or JavaScript is disabled we fallback to 3494 * the default {@link AccessibilityInjector} implementation. 3495 * </p> 3496 * If the URL has the "axs" paramter set to 1 it has already done the 3497 * script injection so we do nothing. If the parameter is set to 0 3498 * the URL opts out accessibility script injection so we fall back to 3499 * the default {@link AccessibilityInjector}. 3500 * </p> 3501 * Note: If the user has not opted-in the accessibility script injection no scripts 3502 * are injected rather the default {@link AccessibilityInjector} implementation 3503 * is used. 3504 * 3505 * @param url The URL loaded by this {@link WebView}. 3506 */ 3507 private void injectAccessibilityForUrl(String url) { 3508 if (mWebViewCore == null) { 3509 return; 3510 } 3511 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3512 3513 if (!accessibilityManager.isEnabled()) { 3514 // it is possible that accessibility was turned off between reloads 3515 ensureAccessibilityScriptInjectorInstance(false); 3516 return; 3517 } 3518 3519 if (!getSettings().getJavaScriptEnabled()) { 3520 // no JS so we fallback to the basic buil-in support 3521 ensureAccessibilityScriptInjectorInstance(true); 3522 return; 3523 } 3524 3525 // check the URL "axs" parameter to choose appropriate action 3526 int axsParameterValue = getAxsUrlParameterValue(url); 3527 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3528 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3529 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3530 if (onDeviceScriptInjectionEnabled) { 3531 ensureAccessibilityScriptInjectorInstance(false); 3532 // neither script injected nor script injection opted out => we inject 3533 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3534 // TODO: Set this flag after successfull script injection. Maybe upon injection 3535 // the chooser should update the meta tag and we check it to declare success 3536 mAccessibilityScriptInjected = true; 3537 } else { 3538 // injection disabled so we fallback to the basic built-in support 3539 ensureAccessibilityScriptInjectorInstance(true); 3540 } 3541 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3542 // injection opted out so we fallback to the basic buil-in support 3543 ensureAccessibilityScriptInjectorInstance(true); 3544 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3545 ensureAccessibilityScriptInjectorInstance(false); 3546 // the URL provides accessibility but we still need to add our generic script 3547 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3548 } else { 3549 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3550 } 3551 } 3552 3553 /** 3554 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3555 * 3556 * @param present True to ensure an insance, false to ensure no instance. 3557 */ 3558 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3559 if (present) { 3560 if (mAccessibilityInjector == null) { 3561 mAccessibilityInjector = new AccessibilityInjector(this); 3562 } 3563 } else { 3564 mAccessibilityInjector = null; 3565 } 3566 } 3567 3568 /** 3569 * Gets the "axs" URL parameter value. 3570 * 3571 * @param url A url to fetch the paramter from. 3572 * @return The parameter value if such, -1 otherwise. 3573 */ 3574 private int getAxsUrlParameterValue(String url) { 3575 if (mMatchAxsUrlParameterPattern == null) { 3576 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3577 } 3578 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3579 if (matcher.find()) { 3580 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3581 return Integer.parseInt(keyValuePair.split("=")[1]); 3582 } 3583 return -1; 3584 } 3585 3586 /** 3587 * The URL of a page that sent a message to scroll the title bar off screen. 3588 * 3589 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3590 * title bar off the screen. Sometimes, the scroll position is set before 3591 * the page finishes loading. Rather than scrolling while the page is still 3592 * loading, keep track of the URL and new scroll position so we can perform 3593 * the scroll once the page finishes loading. 3594 */ 3595 private String mPageThatNeedsToSlideTitleBarOffScreen; 3596 3597 /** 3598 * The destination Y scroll position to be used when the page finishes 3599 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3600 */ 3601 private int mYDistanceToSlideTitleOffScreen; 3602 3603 // scale from content to view coordinates, and pin 3604 // return true if pin caused the final x/y different than the request cx/cy, 3605 // and a future scroll may reach the request cx/cy after our size has 3606 // changed 3607 // return false if the view scroll to the exact position as it is requested, 3608 // where negative numbers are taken to mean 0 3609 private boolean setContentScrollTo(int cx, int cy) { 3610 if (mDrawHistory) { 3611 // disallow WebView to change the scroll position as History Picture 3612 // is used in the view system. 3613 // One known case where this is called is that WebCore tries to 3614 // restore the scroll position. As history Picture already uses the 3615 // saved scroll position, it is ok to skip this. 3616 return false; 3617 } 3618 int vx; 3619 int vy; 3620 if ((cx | cy) == 0) { 3621 // If the page is being scrolled to (0,0), do not add in the title 3622 // bar's height, and simply scroll to (0,0). (The only other work 3623 // in contentToView_ is to multiply, so this would not change 0.) 3624 vx = 0; 3625 vy = 0; 3626 } else { 3627 vx = contentToViewX(cx); 3628 vy = contentToViewY(cy); 3629 } 3630// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3631// vx + " " + vy + "]"); 3632 // Some mobile sites attempt to scroll the title bar off the page by 3633 // scrolling to (0,1). If we are at the top left corner of the 3634 // page, assume this is an attempt to scroll off the title bar, and 3635 // animate the title bar off screen slowly enough that the user can see 3636 // it. 3637 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3638 && mTitleBar != null) { 3639 // FIXME: 100 should be defined somewhere as our max progress. 3640 if (getProgress() < 100) { 3641 // Wait to scroll the title bar off screen until the page has 3642 // finished loading. Keep track of the URL and the destination 3643 // Y position 3644 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3645 mYDistanceToSlideTitleOffScreen = vy; 3646 } else { 3647 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3648 } 3649 // Since we are animating, we have not yet reached the desired 3650 // scroll position. Do not return true to request another attempt 3651 return false; 3652 } 3653 pinScrollTo(vx, vy, false, 0); 3654 // If the request was to scroll to a negative coordinate, treat it as if 3655 // it was a request to scroll to 0 3656 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3657 return true; 3658 } else { 3659 return false; 3660 } 3661 } 3662 3663 // scale from content to view coordinates, and pin 3664 private void spawnContentScrollTo(int cx, int cy) { 3665 if (mDrawHistory) { 3666 // disallow WebView to change the scroll position as History Picture 3667 // is used in the view system. 3668 return; 3669 } 3670 int vx = contentToViewX(cx); 3671 int vy = contentToViewY(cy); 3672 pinScrollTo(vx, vy, true, 0); 3673 } 3674 3675 /** 3676 * These are from webkit, and are in content coordinate system (unzoomed) 3677 */ 3678 private void contentSizeChanged(boolean updateLayout) { 3679 // suppress 0,0 since we usually see real dimensions soon after 3680 // this avoids drawing the prev content in a funny place. If we find a 3681 // way to consolidate these notifications, this check may become 3682 // obsolete 3683 if ((mContentWidth | mContentHeight) == 0) { 3684 return; 3685 } 3686 3687 if (mHeightCanMeasure) { 3688 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3689 || updateLayout) { 3690 requestLayout(); 3691 } 3692 } else if (mWidthCanMeasure) { 3693 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3694 || updateLayout) { 3695 requestLayout(); 3696 } 3697 } else { 3698 // If we don't request a layout, try to send our view size to the 3699 // native side to ensure that WebCore has the correct dimensions. 3700 sendViewSizeZoom(false); 3701 } 3702 } 3703 3704 /** 3705 * Set the WebViewClient that will receive various notifications and 3706 * requests. This will replace the current handler. 3707 * @param client An implementation of WebViewClient. 3708 */ 3709 public void setWebViewClient(WebViewClient client) { 3710 checkThread(); 3711 mCallbackProxy.setWebViewClient(client); 3712 } 3713 3714 /** 3715 * Gets the WebViewClient 3716 * @return the current WebViewClient instance. 3717 * 3718 *@hide pending API council approval. 3719 */ 3720 public WebViewClient getWebViewClient() { 3721 return mCallbackProxy.getWebViewClient(); 3722 } 3723 3724 /** 3725 * Register the interface to be used when content can not be handled by 3726 * the rendering engine, and should be downloaded instead. This will replace 3727 * the current handler. 3728 * @param listener An implementation of DownloadListener. 3729 */ 3730 public void setDownloadListener(DownloadListener listener) { 3731 checkThread(); 3732 mCallbackProxy.setDownloadListener(listener); 3733 } 3734 3735 /** 3736 * Set the chrome handler. This is an implementation of WebChromeClient for 3737 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3738 * This will replace the current handler. 3739 * @param client An implementation of WebChromeClient. 3740 */ 3741 public void setWebChromeClient(WebChromeClient client) { 3742 checkThread(); 3743 mCallbackProxy.setWebChromeClient(client); 3744 } 3745 3746 /** 3747 * Gets the chrome handler. 3748 * @return the current WebChromeClient instance. 3749 * 3750 * @hide API council approval. 3751 */ 3752 public WebChromeClient getWebChromeClient() { 3753 return mCallbackProxy.getWebChromeClient(); 3754 } 3755 3756 /** 3757 * Set the back/forward list client. This is an implementation of 3758 * WebBackForwardListClient for handling new items and changes in the 3759 * history index. 3760 * @param client An implementation of WebBackForwardListClient. 3761 * {@hide} 3762 */ 3763 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3764 mCallbackProxy.setWebBackForwardListClient(client); 3765 } 3766 3767 /** 3768 * Gets the WebBackForwardListClient. 3769 * {@hide} 3770 */ 3771 public WebBackForwardListClient getWebBackForwardListClient() { 3772 return mCallbackProxy.getWebBackForwardListClient(); 3773 } 3774 3775 /** 3776 * Set the Picture listener. This is an interface used to receive 3777 * notifications of a new Picture. 3778 * @param listener An implementation of WebView.PictureListener. 3779 * @deprecated This method is now obsolete. 3780 */ 3781 @Deprecated 3782 public void setPictureListener(PictureListener listener) { 3783 checkThread(); 3784 mPictureListener = listener; 3785 } 3786 3787 /** 3788 * {@hide} 3789 */ 3790 /* FIXME: Debug only! Remove for SDK! */ 3791 public void externalRepresentation(Message callback) { 3792 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3793 } 3794 3795 /** 3796 * {@hide} 3797 */ 3798 /* FIXME: Debug only! Remove for SDK! */ 3799 public void documentAsText(Message callback) { 3800 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3801 } 3802 3803 /** 3804 * Use this function to bind an object to JavaScript so that the 3805 * methods can be accessed from JavaScript. 3806 * <p><strong>IMPORTANT:</strong> 3807 * <ul> 3808 * <li> Using addJavascriptInterface() allows JavaScript to control your 3809 * application. This can be a very useful feature or a dangerous security 3810 * issue. When the HTML in the WebView is untrustworthy (for example, part 3811 * or all of the HTML is provided by some person or process), then an 3812 * attacker could inject HTML that will execute your code and possibly any 3813 * code of the attacker's choosing.<br> 3814 * Do not use addJavascriptInterface() unless all of the HTML in this 3815 * WebView was written by you.</li> 3816 * <li> The Java object that is bound runs in another thread and not in 3817 * the thread that it was constructed in.</li> 3818 * </ul></p> 3819 * @param obj The class instance to bind to JavaScript, null instances are 3820 * ignored. 3821 * @param interfaceName The name to used to expose the instance in 3822 * JavaScript. 3823 */ 3824 public void addJavascriptInterface(Object obj, String interfaceName) { 3825 checkThread(); 3826 if (obj == null) { 3827 return; 3828 } 3829 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3830 arg.mObject = obj; 3831 arg.mInterfaceName = interfaceName; 3832 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3833 } 3834 3835 /** 3836 * Removes a previously added JavaScript interface with the given name. 3837 * @param interfaceName The name of the interface to remove. 3838 */ 3839 public void removeJavascriptInterface(String interfaceName) { 3840 checkThread(); 3841 if (mWebViewCore != null) { 3842 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3843 arg.mInterfaceName = interfaceName; 3844 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3845 } 3846 } 3847 3848 /** 3849 * Return the WebSettings object used to control the settings for this 3850 * WebView. 3851 * @return A WebSettings object that can be used to control this WebView's 3852 * settings. 3853 */ 3854 public WebSettings getSettings() { 3855 checkThread(); 3856 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3857 } 3858 3859 /** 3860 * Return the list of currently loaded plugins. 3861 * @return The list of currently loaded plugins. 3862 * 3863 * @hide 3864 * @deprecated This was used for Gears, which has been deprecated. 3865 */ 3866 @Deprecated 3867 public static synchronized PluginList getPluginList() { 3868 checkThread(); 3869 return new PluginList(); 3870 } 3871 3872 /** 3873 * @hide 3874 * @deprecated This was used for Gears, which has been deprecated. 3875 */ 3876 @Deprecated 3877 public void refreshPlugins(boolean reloadOpenPages) { 3878 checkThread(); 3879 } 3880 3881 //------------------------------------------------------------------------- 3882 // Override View methods 3883 //------------------------------------------------------------------------- 3884 3885 @Override 3886 protected void finalize() throws Throwable { 3887 try { 3888 destroyImpl(); 3889 } finally { 3890 super.finalize(); 3891 } 3892 } 3893 3894 @Override 3895 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3896 if (child == mTitleBar) { 3897 // When drawing the title bar, move it horizontally to always show 3898 // at the top of the WebView. 3899 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3900 int newTop = 0; 3901 if (mTitleGravity == Gravity.NO_GRAVITY) { 3902 newTop = Math.min(0, mScrollY); 3903 } else if (mTitleGravity == Gravity.TOP) { 3904 newTop = mScrollY; 3905 } 3906 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3907 mTitleBar.setTop(newTop); 3908 } 3909 return super.drawChild(canvas, child, drawingTime); 3910 } 3911 3912 private void drawContent(Canvas canvas) { 3913 // Update the buttons in the picture, so when we draw the picture 3914 // to the screen, they are in the correct state. 3915 // Tell the native side if user is a) touching the screen, 3916 // b) pressing the trackball down, or c) pressing the enter key 3917 // If the cursor is on a button, we need to draw it in the pressed 3918 // state. 3919 // If mNativeClass is 0, we should not reach here, so we do not 3920 // need to check it again. 3921 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3922 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3923 || mTrackballDown || mGotCenterDown, false); 3924 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3925 } 3926 3927 /** 3928 * Draw the background when beyond bounds 3929 * @param canvas Canvas to draw into 3930 */ 3931 private void drawOverScrollBackground(Canvas canvas) { 3932 if (mOverScrollBackground == null) { 3933 mOverScrollBackground = new Paint(); 3934 Bitmap bm = BitmapFactory.decodeResource( 3935 mContext.getResources(), 3936 com.android.internal.R.drawable.status_bar_background); 3937 mOverScrollBackground.setShader(new BitmapShader(bm, 3938 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3939 mOverScrollBorder = new Paint(); 3940 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3941 mOverScrollBorder.setStrokeWidth(0); 3942 mOverScrollBorder.setColor(0xffbbbbbb); 3943 } 3944 3945 int top = 0; 3946 int right = computeRealHorizontalScrollRange(); 3947 int bottom = top + computeRealVerticalScrollRange(); 3948 // first draw the background and anchor to the top of the view 3949 canvas.save(); 3950 canvas.translate(mScrollX, mScrollY); 3951 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3952 - mScrollY, Region.Op.DIFFERENCE); 3953 canvas.drawPaint(mOverScrollBackground); 3954 canvas.restore(); 3955 // then draw the border 3956 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3957 // next clip the region for the content 3958 canvas.clipRect(0, top, right, bottom); 3959 } 3960 3961 @Override 3962 protected void onDraw(Canvas canvas) { 3963 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3964 if (mNativeClass == 0) { 3965 return; 3966 } 3967 3968 // if both mContentWidth and mContentHeight are 0, it means there is no 3969 // valid Picture passed to WebView yet. This can happen when WebView 3970 // just starts. Draw the background and return. 3971 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3972 canvas.drawColor(mBackgroundColor); 3973 return; 3974 } 3975 3976 if (canvas.isHardwareAccelerated()) { 3977 mZoomManager.setHardwareAccelerated(); 3978 } 3979 3980 int saveCount = canvas.save(); 3981 if (mInOverScrollMode && !getSettings() 3982 .getUseWebViewBackgroundForOverscrollBackground()) { 3983 drawOverScrollBackground(canvas); 3984 } 3985 if (mTitleBar != null) { 3986 canvas.translate(0, getTitleHeight()); 3987 } 3988 drawContent(canvas); 3989 canvas.restoreToCount(saveCount); 3990 3991 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3992 invalidate(); 3993 } 3994 if (inEditingMode()) { 3995 mWebTextView.onDrawSubstitute(); 3996 } 3997 mWebViewCore.signalRepaintDone(); 3998 3999 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4000 invalidate(); 4001 } 4002 4003 // paint the highlight in the end 4004 if (!mTouchHighlightRegion.isEmpty()) { 4005 if (mTouchHightlightPaint == null) { 4006 mTouchHightlightPaint = new Paint(); 4007 mTouchHightlightPaint.setColor(mHightlightColor); 4008 mTouchHightlightPaint.setAntiAlias(true); 4009 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 4010 TOUCH_HIGHLIGHT_ARC)); 4011 } 4012 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 4013 mTouchHightlightPaint); 4014 } 4015 if (DEBUG_TOUCH_HIGHLIGHT) { 4016 if (getSettings().getNavDump()) { 4017 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4018 if (mTouchCrossHairColor == null) { 4019 mTouchCrossHairColor = new Paint(); 4020 mTouchCrossHairColor.setColor(Color.RED); 4021 } 4022 canvas.drawLine(mTouchHighlightX - mNavSlop, 4023 mTouchHighlightY - mNavSlop, mTouchHighlightX 4024 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4025 + 1, mTouchCrossHairColor); 4026 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4027 mTouchHighlightY - mNavSlop, mTouchHighlightX 4028 - mNavSlop, 4029 mTouchHighlightY + mNavSlop + 1, 4030 mTouchCrossHairColor); 4031 } 4032 } 4033 } 4034 } 4035 4036 private void removeTouchHighlight(boolean removePendingMessage) { 4037 if (removePendingMessage) { 4038 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4039 } 4040 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 4041 } 4042 4043 @Override 4044 public void setLayoutParams(ViewGroup.LayoutParams params) { 4045 if (params.height == LayoutParams.WRAP_CONTENT) { 4046 mWrapContent = true; 4047 } 4048 super.setLayoutParams(params); 4049 } 4050 4051 @Override 4052 public boolean performLongClick() { 4053 // performLongClick() is the result of a delayed message. If we switch 4054 // to windows overview, the WebView will be temporarily removed from the 4055 // view system. In that case, do nothing. 4056 if (getParent() == null) return false; 4057 4058 // A multi-finger gesture can look like a long press; make sure we don't take 4059 // long press actions if we're scaling. 4060 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4061 if (detector != null && detector.isInProgress()) { 4062 return false; 4063 } 4064 4065 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4066 // Send the click so that the textfield is in focus 4067 centerKeyPressOnTextField(); 4068 rebuildWebTextView(); 4069 } else { 4070 clearTextEntry(); 4071 } 4072 if (inEditingMode()) { 4073 // Since we just called rebuildWebTextView, the layout is not set 4074 // properly. Update it so it can correctly find the word to select. 4075 mWebTextView.ensureLayout(); 4076 // Provide a touch down event to WebTextView, which will allow it 4077 // to store the location to use in performLongClick. 4078 AbsoluteLayout.LayoutParams params 4079 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4080 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4081 mLastTouchTime, MotionEvent.ACTION_DOWN, 4082 mLastTouchX - params.x + mScrollX, 4083 mLastTouchY - params.y + mScrollY, 0); 4084 mWebTextView.dispatchTouchEvent(fake); 4085 return mWebTextView.performLongClick(); 4086 } 4087 if (mSelectingText) return false; // long click does nothing on selection 4088 /* if long click brings up a context menu, the super function 4089 * returns true and we're done. Otherwise, nothing happened when 4090 * the user clicked. */ 4091 if (super.performLongClick()) { 4092 return true; 4093 } 4094 /* In the case where the application hasn't already handled the long 4095 * click action, look for a word under the click. If one is found, 4096 * animate the text selection into view. 4097 * FIXME: no animation code yet */ 4098 return selectText(); 4099 } 4100 4101 /** 4102 * Select the word at the last click point. 4103 * 4104 * @hide pending API council approval 4105 */ 4106 public boolean selectText() { 4107 int x = viewToContentX(mLastTouchX + mScrollX); 4108 int y = viewToContentY(mLastTouchY + mScrollY); 4109 return selectText(x, y); 4110 } 4111 4112 /** 4113 * Select the word at the indicated content coordinates. 4114 */ 4115 boolean selectText(int x, int y) { 4116 if (!setUpSelect(true, x, y)) { 4117 return false; 4118 } 4119 nativeSetExtendSelection(); 4120 mDrawSelectionPointer = false; 4121 mSelectionStarted = true; 4122 mTouchMode = TOUCH_DRAG_MODE; 4123 return true; 4124 } 4125 4126 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4127 4128 @Override 4129 protected void onConfigurationChanged(Configuration newConfig) { 4130 if (mSelectingText && mOrientation != newConfig.orientation) { 4131 selectionDone(); 4132 } 4133 mOrientation = newConfig.orientation; 4134 } 4135 4136 /** 4137 * Keep track of the Callback so we can end its ActionMode or remove its 4138 * titlebar. 4139 */ 4140 private SelectActionModeCallback mSelectCallback; 4141 4142 // These values are possible options for didUpdateWebTextViewDimensions. 4143 private static final int FULLY_ON_SCREEN = 0; 4144 private static final int INTERSECTS_SCREEN = 1; 4145 private static final int ANYWHERE = 2; 4146 4147 /** 4148 * Check to see if the focused textfield/textarea is still on screen. If it 4149 * is, update the the dimensions and location of WebTextView. Otherwise, 4150 * remove the WebTextView. Should be called when the zoom level changes. 4151 * @param intersection How to determine whether the textfield/textarea is 4152 * still on screen. 4153 * @return boolean True if the textfield/textarea is still on screen and the 4154 * dimensions/location of WebTextView have been updated. 4155 */ 4156 private boolean didUpdateWebTextViewDimensions(int intersection) { 4157 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4158 Rect vBox = contentToViewRect(contentBounds); 4159 Rect visibleRect = new Rect(); 4160 calcOurVisibleRect(visibleRect); 4161 // If the textfield is on screen, place the WebTextView in 4162 // its new place, accounting for our new scroll/zoom values, 4163 // and adjust its textsize. 4164 boolean onScreen; 4165 switch (intersection) { 4166 case FULLY_ON_SCREEN: 4167 onScreen = visibleRect.contains(vBox); 4168 break; 4169 case INTERSECTS_SCREEN: 4170 onScreen = Rect.intersects(visibleRect, vBox); 4171 break; 4172 case ANYWHERE: 4173 onScreen = true; 4174 break; 4175 default: 4176 throw new AssertionError( 4177 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4178 } 4179 if (onScreen) { 4180 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4181 vBox.height()); 4182 mWebTextView.updateTextSize(); 4183 updateWebTextViewPadding(); 4184 return true; 4185 } else { 4186 // The textfield is now off screen. The user probably 4187 // was not zooming to see the textfield better. Remove 4188 // the WebTextView. If the user types a key, and the 4189 // textfield is still in focus, we will reconstruct 4190 // the WebTextView and scroll it back on screen. 4191 mWebTextView.remove(); 4192 return false; 4193 } 4194 } 4195 4196 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4197 boolean isPictureAfterFirstLayout) { 4198 if (mNativeClass == 0) 4199 return; 4200 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4201 isPictureAfterFirstLayout); 4202 if (mHTML5VideoViewProxy != null) { 4203 mHTML5VideoViewProxy.setBaseLayer(layer); 4204 } 4205 } 4206 4207 private void onZoomAnimationStart() { 4208 // If it is in password mode, turn it off so it does not draw misplaced. 4209 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4210 mWebTextView.setInPassword(false); 4211 } 4212 } 4213 4214 private void onZoomAnimationEnd() { 4215 // adjust the edit text view if needed 4216 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4217 && nativeFocusCandidateIsPassword()) { 4218 // If it is a password field, start drawing the WebTextView once 4219 // again. 4220 mWebTextView.setInPassword(true); 4221 } 4222 } 4223 4224 void onFixedLengthZoomAnimationStart() { 4225 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4226 onZoomAnimationStart(); 4227 } 4228 4229 void onFixedLengthZoomAnimationEnd() { 4230 if (!mSelectingText) { 4231 WebViewCore.resumeUpdatePicture(mWebViewCore); 4232 } 4233 onZoomAnimationEnd(); 4234 } 4235 4236 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4237 Paint.DITHER_FLAG | 4238 Paint.SUBPIXEL_TEXT_FLAG; 4239 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4240 Paint.DITHER_FLAG; 4241 4242 private final DrawFilter mZoomFilter = 4243 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4244 // If we need to trade better quality for speed, set mScrollFilter to null 4245 private final DrawFilter mScrollFilter = 4246 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4247 4248 private void drawCoreAndCursorRing(Canvas canvas, int color, 4249 boolean drawCursorRing) { 4250 if (mDrawHistory) { 4251 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4252 canvas.drawPicture(mHistoryPicture); 4253 return; 4254 } 4255 if (mNativeClass == 0) return; 4256 4257 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4258 boolean animateScroll = ((!mScroller.isFinished() 4259 || mVelocityTracker != null) 4260 && (mTouchMode != TOUCH_DRAG_MODE || 4261 mHeldMotionless != MOTIONLESS_TRUE)) 4262 || mDeferTouchMode == TOUCH_DRAG_MODE; 4263 if (mTouchMode == TOUCH_DRAG_MODE) { 4264 if (mHeldMotionless == MOTIONLESS_PENDING) { 4265 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4266 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4267 mHeldMotionless = MOTIONLESS_FALSE; 4268 } 4269 if (mHeldMotionless == MOTIONLESS_FALSE) { 4270 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4271 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4272 mHeldMotionless = MOTIONLESS_PENDING; 4273 } 4274 } 4275 if (animateZoom) { 4276 mZoomManager.animateZoom(canvas); 4277 } else if (!canvas.isHardwareAccelerated()) { 4278 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4279 } 4280 4281 boolean UIAnimationsRunning = false; 4282 // Currently for each draw we compute the animation values; 4283 // We may in the future decide to do that independently. 4284 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4285 UIAnimationsRunning = true; 4286 // If we have unfinished (or unstarted) animations, 4287 // we ask for a repaint. We only need to do this in software 4288 // rendering (with hardware rendering we already have a different 4289 // method of requesting a repaint) 4290 if (!canvas.isHardwareAccelerated()) 4291 invalidate(); 4292 } 4293 4294 // decide which adornments to draw 4295 int extras = DRAW_EXTRAS_NONE; 4296 if (mFindIsUp) { 4297 extras = DRAW_EXTRAS_FIND; 4298 } else if (mSelectingText) { 4299 extras = DRAW_EXTRAS_SELECTION; 4300 nativeSetSelectionPointer(mDrawSelectionPointer, 4301 mZoomManager.getInvScale(), 4302 mSelectX, mSelectY - getTitleHeight()); 4303 } else if (drawCursorRing) { 4304 extras = DRAW_EXTRAS_CURSOR_RING; 4305 } 4306 if (DebugFlags.WEB_VIEW) { 4307 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4308 + " mSelectingText=" + mSelectingText 4309 + " nativePageShouldHandleShiftAndArrows()=" 4310 + nativePageShouldHandleShiftAndArrows() 4311 + " animateZoom=" + animateZoom 4312 + " extras=" + extras); 4313 } 4314 4315 if (canvas.isHardwareAccelerated()) { 4316 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4317 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4318 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4319 } else { 4320 DrawFilter df = null; 4321 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4322 df = mZoomFilter; 4323 } else if (animateScroll) { 4324 df = mScrollFilter; 4325 } 4326 canvas.setDrawFilter(df); 4327 // XXX: Revisit splitting content. Right now it causes a 4328 // synchronization problem with layers. 4329 int content = nativeDraw(canvas, color, extras, false); 4330 canvas.setDrawFilter(null); 4331 if (content != 0) { 4332 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4333 } 4334 } 4335 4336 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4337 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4338 mTouchMode = TOUCH_SHORTPRESS_MODE; 4339 } 4340 } 4341 if (mFocusSizeChanged) { 4342 mFocusSizeChanged = false; 4343 // If we are zooming, this will get handled above, when the zoom 4344 // finishes. We also do not need to do this unless the WebTextView 4345 // is showing. 4346 if (!animateZoom && inEditingMode()) { 4347 didUpdateWebTextViewDimensions(ANYWHERE); 4348 } 4349 } 4350 } 4351 4352 // draw history 4353 private boolean mDrawHistory = false; 4354 private Picture mHistoryPicture = null; 4355 private int mHistoryWidth = 0; 4356 private int mHistoryHeight = 0; 4357 4358 // Only check the flag, can be called from WebCore thread 4359 boolean drawHistory() { 4360 return mDrawHistory; 4361 } 4362 4363 int getHistoryPictureWidth() { 4364 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4365 } 4366 4367 // Should only be called in UI thread 4368 void switchOutDrawHistory() { 4369 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4370 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4371 mDrawHistory = false; 4372 mHistoryPicture = null; 4373 invalidate(); 4374 int oldScrollX = mScrollX; 4375 int oldScrollY = mScrollY; 4376 mScrollX = pinLocX(mScrollX); 4377 mScrollY = pinLocY(mScrollY); 4378 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4379 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4380 } else { 4381 sendOurVisibleRect(); 4382 } 4383 } 4384 } 4385 4386 WebViewCore.CursorData cursorData() { 4387 WebViewCore.CursorData result = cursorDataNoPosition(); 4388 Point position = nativeCursorPosition(); 4389 result.mX = position.x; 4390 result.mY = position.y; 4391 return result; 4392 } 4393 4394 WebViewCore.CursorData cursorDataNoPosition() { 4395 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4396 result.mMoveGeneration = nativeMoveGeneration(); 4397 result.mFrame = nativeCursorFramePointer(); 4398 return result; 4399 } 4400 4401 /** 4402 * Delete text from start to end in the focused textfield. If there is no 4403 * focus, or if start == end, silently fail. If start and end are out of 4404 * order, swap them. 4405 * @param start Beginning of selection to delete. 4406 * @param end End of selection to delete. 4407 */ 4408 /* package */ void deleteSelection(int start, int end) { 4409 mTextGeneration++; 4410 WebViewCore.TextSelectionData data 4411 = new WebViewCore.TextSelectionData(start, end); 4412 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4413 data); 4414 } 4415 4416 /** 4417 * Set the selection to (start, end) in the focused textfield. If start and 4418 * end are out of order, swap them. 4419 * @param start Beginning of selection. 4420 * @param end End of selection. 4421 */ 4422 /* package */ void setSelection(int start, int end) { 4423 if (mWebViewCore != null) { 4424 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4425 } 4426 } 4427 4428 @Override 4429 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4430 InputConnection connection = super.onCreateInputConnection(outAttrs); 4431 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4432 return connection; 4433 } 4434 4435 /** 4436 * Called in response to a message from webkit telling us that the soft 4437 * keyboard should be launched. 4438 */ 4439 private void displaySoftKeyboard(boolean isTextView) { 4440 InputMethodManager imm = (InputMethodManager) 4441 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4442 4443 // bring it back to the default level scale so that user can enter text 4444 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4445 if (zoom) { 4446 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4447 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4448 } 4449 if (isTextView) { 4450 rebuildWebTextView(); 4451 if (inEditingMode()) { 4452 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4453 if (zoom) { 4454 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4455 } 4456 return; 4457 } 4458 } 4459 // Used by plugins and contentEditable. 4460 // Also used if the navigation cache is out of date, and 4461 // does not recognize that a textfield is in focus. In that 4462 // case, use WebView as the targeted view. 4463 // see http://b/issue?id=2457459 4464 imm.showSoftInput(this, 0); 4465 } 4466 4467 // Called by WebKit to instruct the UI to hide the keyboard 4468 private void hideSoftKeyboard() { 4469 InputMethodManager imm = InputMethodManager.peekInstance(); 4470 if (imm != null && (imm.isActive(this) 4471 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4472 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4473 } 4474 } 4475 4476 /* 4477 * This method checks the current focus and cursor and potentially rebuilds 4478 * mWebTextView to have the appropriate properties, such as password, 4479 * multiline, and what text it contains. It also removes it if necessary. 4480 */ 4481 /* package */ void rebuildWebTextView() { 4482 // If the WebView does not have focus, do nothing until it gains focus. 4483 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4484 return; 4485 } 4486 boolean alreadyThere = inEditingMode(); 4487 // inEditingMode can only return true if mWebTextView is non-null, 4488 // so we can safely call remove() if (alreadyThere) 4489 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4490 if (alreadyThere) { 4491 mWebTextView.remove(); 4492 } 4493 return; 4494 } 4495 // At this point, we know we have found an input field, so go ahead 4496 // and create the WebTextView if necessary. 4497 if (mWebTextView == null) { 4498 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4499 // Initialize our generation number. 4500 mTextGeneration = 0; 4501 } 4502 mWebTextView.updateTextSize(); 4503 Rect visibleRect = new Rect(); 4504 calcOurContentVisibleRect(visibleRect); 4505 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4506 // should be in content coordinates. 4507 Rect bounds = nativeFocusCandidateNodeBounds(); 4508 Rect vBox = contentToViewRect(bounds); 4509 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4510 if (!Rect.intersects(bounds, visibleRect)) { 4511 revealSelection(); 4512 } 4513 String text = nativeFocusCandidateText(); 4514 int nodePointer = nativeFocusCandidatePointer(); 4515 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4516 // It is possible that we have the same textfield, but it has moved, 4517 // i.e. In the case of opening/closing the screen. 4518 // In that case, we need to set the dimensions, but not the other 4519 // aspects. 4520 // If the text has been changed by webkit, update it. However, if 4521 // there has been more UI text input, ignore it. We will receive 4522 // another update when that text is recognized. 4523 if (text != null && !text.equals(mWebTextView.getText().toString()) 4524 && nativeTextGeneration() == mTextGeneration) { 4525 mWebTextView.setTextAndKeepSelection(text); 4526 } 4527 } else { 4528 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4529 Gravity.RIGHT : Gravity.NO_GRAVITY); 4530 // This needs to be called before setType, which may call 4531 // requestFormData, and it needs to have the correct nodePointer. 4532 mWebTextView.setNodePointer(nodePointer); 4533 mWebTextView.setType(nativeFocusCandidateType()); 4534 updateWebTextViewPadding(); 4535 if (null == text) { 4536 if (DebugFlags.WEB_VIEW) { 4537 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4538 } 4539 text = ""; 4540 } 4541 mWebTextView.setTextAndKeepSelection(text); 4542 InputMethodManager imm = InputMethodManager.peekInstance(); 4543 if (imm != null && imm.isActive(mWebTextView)) { 4544 imm.restartInput(mWebTextView); 4545 } 4546 } 4547 if (isFocused()) { 4548 mWebTextView.requestFocus(); 4549 } 4550 } 4551 4552 /** 4553 * Update the padding of mWebTextView based on the native textfield/textarea 4554 */ 4555 void updateWebTextViewPadding() { 4556 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4557 if (paddingRect != null) { 4558 // Use contentToViewDimension since these are the dimensions of 4559 // the padding. 4560 mWebTextView.setPadding( 4561 contentToViewDimension(paddingRect.left), 4562 contentToViewDimension(paddingRect.top), 4563 contentToViewDimension(paddingRect.right), 4564 contentToViewDimension(paddingRect.bottom)); 4565 } 4566 } 4567 4568 /** 4569 * Tell webkit to put the cursor on screen. 4570 */ 4571 /* package */ void revealSelection() { 4572 if (mWebViewCore != null) { 4573 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4574 } 4575 } 4576 4577 /** 4578 * Called by WebTextView to find saved form data associated with the 4579 * textfield 4580 * @param name Name of the textfield. 4581 * @param nodePointer Pointer to the node of the textfield, so it can be 4582 * compared to the currently focused textfield when the data is 4583 * retrieved. 4584 * @param autoFillable true if WebKit has determined this field is part of 4585 * a form that can be auto filled. 4586 * @param autoComplete true if the attribute "autocomplete" is set to true 4587 * on the textfield. 4588 */ 4589 /* package */ void requestFormData(String name, int nodePointer, 4590 boolean autoFillable, boolean autoComplete) { 4591 if (mWebViewCore.getSettings().getSaveFormData()) { 4592 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4593 update.arg1 = nodePointer; 4594 RequestFormData updater = new RequestFormData(name, getUrl(), 4595 update, autoFillable, autoComplete); 4596 Thread t = new Thread(updater); 4597 t.start(); 4598 } 4599 } 4600 4601 /** 4602 * Pass a message to find out the <label> associated with the <input> 4603 * identified by nodePointer 4604 * @param framePointer Pointer to the frame containing the <input> node 4605 * @param nodePointer Pointer to the node for which a <label> is desired. 4606 */ 4607 /* package */ void requestLabel(int framePointer, int nodePointer) { 4608 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4609 nodePointer); 4610 } 4611 4612 /* 4613 * This class requests an Adapter for the WebTextView which shows past 4614 * entries stored in the database. It is a Runnable so that it can be done 4615 * in its own thread, without slowing down the UI. 4616 */ 4617 private class RequestFormData implements Runnable { 4618 private String mName; 4619 private String mUrl; 4620 private Message mUpdateMessage; 4621 private boolean mAutoFillable; 4622 private boolean mAutoComplete; 4623 4624 public RequestFormData(String name, String url, Message msg, 4625 boolean autoFillable, boolean autoComplete) { 4626 mName = name; 4627 mUrl = url; 4628 mUpdateMessage = msg; 4629 mAutoFillable = autoFillable; 4630 mAutoComplete = autoComplete; 4631 } 4632 4633 public void run() { 4634 ArrayList<String> pastEntries = new ArrayList<String>(); 4635 4636 if (mAutoFillable) { 4637 // Note that code inside the adapter click handler in WebTextView depends 4638 // on the AutoFill item being at the top of the drop down list. If you change 4639 // the order, make sure to do it there too! 4640 WebSettings settings = getSettings(); 4641 if (settings != null && settings.getAutoFillProfile() != null) { 4642 pastEntries.add(getResources().getText( 4643 com.android.internal.R.string.autofill_this_form).toString() + 4644 " " + 4645 mAutoFillData.getPreviewString()); 4646 mWebTextView.setAutoFillProfileIsSet(true); 4647 } else { 4648 // There is no autofill profile set up yet, so add an option that 4649 // will invite the user to set their profile up. 4650 pastEntries.add(getResources().getText( 4651 com.android.internal.R.string.setup_autofill).toString()); 4652 mWebTextView.setAutoFillProfileIsSet(false); 4653 } 4654 } 4655 4656 if (mAutoComplete) { 4657 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4658 } 4659 4660 if (pastEntries.size() > 0) { 4661 AutoCompleteAdapter adapter = new 4662 AutoCompleteAdapter(mContext, pastEntries); 4663 mUpdateMessage.obj = adapter; 4664 mUpdateMessage.sendToTarget(); 4665 } 4666 } 4667 } 4668 4669 /** 4670 * Dump the display tree to "/sdcard/displayTree.txt" 4671 * 4672 * @hide debug only 4673 */ 4674 public void dumpDisplayTree() { 4675 nativeDumpDisplayTree(getUrl()); 4676 } 4677 4678 /** 4679 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4680 * "/sdcard/domTree.txt" 4681 * 4682 * @hide debug only 4683 */ 4684 public void dumpDomTree(boolean toFile) { 4685 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4686 } 4687 4688 /** 4689 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4690 * to "/sdcard/renderTree.txt" 4691 * 4692 * @hide debug only 4693 */ 4694 public void dumpRenderTree(boolean toFile) { 4695 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4696 } 4697 4698 /** 4699 * Called by DRT on UI thread, need to proxy to WebCore thread. 4700 * 4701 * @hide debug only 4702 */ 4703 public void useMockDeviceOrientation() { 4704 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4705 } 4706 4707 /** 4708 * Called by DRT on WebCore thread. 4709 * 4710 * @hide debug only 4711 */ 4712 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4713 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4714 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4715 canProvideGamma, gamma); 4716 } 4717 4718 /** 4719 * Dump the V8 counters to standard output. 4720 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4721 * true. Otherwise, this will do nothing. 4722 * 4723 * @hide debug only 4724 */ 4725 public void dumpV8Counters() { 4726 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4727 } 4728 4729 // This is used to determine long press with the center key. Does not 4730 // affect long press with the trackball/touch. 4731 private boolean mGotCenterDown = false; 4732 4733 @Override 4734 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4735 // send complex characters to webkit for use by JS and plugins 4736 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4737 // pass the key to DOM 4738 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4739 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4740 // return true as DOM handles the key 4741 return true; 4742 } 4743 return false; 4744 } 4745 4746 private boolean isEnterActionKey(int keyCode) { 4747 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4748 || keyCode == KeyEvent.KEYCODE_ENTER 4749 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4750 } 4751 4752 @Override 4753 public boolean onKeyDown(int keyCode, KeyEvent event) { 4754 if (DebugFlags.WEB_VIEW) { 4755 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4756 + "keyCode=" + keyCode 4757 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4758 } 4759 4760 // don't implement accelerator keys here; defer to host application 4761 if (event.isCtrlPressed()) { 4762 return false; 4763 } 4764 4765 if (mNativeClass == 0) { 4766 return false; 4767 } 4768 4769 // do this hack up front, so it always works, regardless of touch-mode 4770 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4771 mAutoRedraw = !mAutoRedraw; 4772 if (mAutoRedraw) { 4773 invalidate(); 4774 } 4775 return true; 4776 } 4777 4778 // Bubble up the key event if 4779 // 1. it is a system key; or 4780 // 2. the host application wants to handle it; 4781 if (event.isSystem() 4782 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4783 return false; 4784 } 4785 4786 // accessibility support 4787 if (accessibilityScriptInjected()) { 4788 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4789 // if an accessibility script is injected we delegate to it the key handling. 4790 // this script is a screen reader which is a fully fledged solution for blind 4791 // users to navigate in and interact with web pages. 4792 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4793 return true; 4794 } else { 4795 // Clean up if accessibility was disabled after loading the current URL. 4796 mAccessibilityScriptInjected = false; 4797 } 4798 } else if (mAccessibilityInjector != null) { 4799 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4800 if (mAccessibilityInjector.onKeyEvent(event)) { 4801 // if an accessibility injector is present (no JavaScript enabled or the site 4802 // opts out injecting our JavaScript screen reader) we let it decide whether 4803 // to act on and consume the event. 4804 return true; 4805 } 4806 } else { 4807 // Clean up if accessibility was disabled after loading the current URL. 4808 mAccessibilityInjector = null; 4809 } 4810 } 4811 4812 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4813 if (event.hasNoModifiers()) { 4814 pageUp(false); 4815 return true; 4816 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4817 pageUp(true); 4818 return true; 4819 } 4820 } 4821 4822 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4823 if (event.hasNoModifiers()) { 4824 pageDown(false); 4825 return true; 4826 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4827 pageDown(true); 4828 return true; 4829 } 4830 } 4831 4832 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4833 pageUp(true); 4834 return true; 4835 } 4836 4837 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4838 pageDown(true); 4839 return true; 4840 } 4841 4842 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4843 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4844 switchOutDrawHistory(); 4845 if (nativePageShouldHandleShiftAndArrows()) { 4846 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4847 return true; 4848 } 4849 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4850 switch (keyCode) { 4851 case KeyEvent.KEYCODE_DPAD_UP: 4852 pageUp(true); 4853 return true; 4854 case KeyEvent.KEYCODE_DPAD_DOWN: 4855 pageDown(true); 4856 return true; 4857 case KeyEvent.KEYCODE_DPAD_LEFT: 4858 nativeClearCursor(); // start next trackball movement from page edge 4859 return pinScrollTo(0, mScrollY, true, 0); 4860 case KeyEvent.KEYCODE_DPAD_RIGHT: 4861 nativeClearCursor(); // start next trackball movement from page edge 4862 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4863 } 4864 } 4865 if (mSelectingText) { 4866 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4867 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4868 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4869 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4870 int multiplier = event.getRepeatCount() + 1; 4871 moveSelection(xRate * multiplier, yRate * multiplier); 4872 return true; 4873 } 4874 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4875 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4876 return true; 4877 } 4878 // Bubble up the key event as WebView doesn't handle it 4879 return false; 4880 } 4881 4882 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4883 switchOutDrawHistory(); 4884 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4885 || nativeCursorWantsKeyEvents(); 4886 if (event.getRepeatCount() == 0) { 4887 if (mSelectingText) { 4888 return true; // discard press if copy in progress 4889 } 4890 mGotCenterDown = true; 4891 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4892 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4893 // Already checked mNativeClass, so we do not need to check it 4894 // again. 4895 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4896 if (!wantsKeyEvents) return true; 4897 } 4898 // Bubble up the key event as WebView doesn't handle it 4899 if (!wantsKeyEvents) return false; 4900 } 4901 4902 if (getSettings().getNavDump()) { 4903 switch (keyCode) { 4904 case KeyEvent.KEYCODE_4: 4905 dumpDisplayTree(); 4906 break; 4907 case KeyEvent.KEYCODE_5: 4908 case KeyEvent.KEYCODE_6: 4909 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4910 break; 4911 case KeyEvent.KEYCODE_7: 4912 case KeyEvent.KEYCODE_8: 4913 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4914 break; 4915 case KeyEvent.KEYCODE_9: 4916 nativeInstrumentReport(); 4917 return true; 4918 } 4919 } 4920 4921 if (nativeCursorIsTextInput()) { 4922 // This message will put the node in focus, for the DOM's notion 4923 // of focus. 4924 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4925 nativeCursorNodePointer()); 4926 // This will bring up the WebTextView and put it in focus, for 4927 // our view system's notion of focus 4928 rebuildWebTextView(); 4929 // Now we need to pass the event to it 4930 if (inEditingMode()) { 4931 mWebTextView.setDefaultSelection(); 4932 return mWebTextView.dispatchKeyEvent(event); 4933 } 4934 } else if (nativeHasFocusNode()) { 4935 // In this case, the cursor is not on a text input, but the focus 4936 // might be. Check it, and if so, hand over to the WebTextView. 4937 rebuildWebTextView(); 4938 if (inEditingMode()) { 4939 mWebTextView.setDefaultSelection(); 4940 return mWebTextView.dispatchKeyEvent(event); 4941 } 4942 } 4943 4944 // TODO: should we pass all the keys to DOM or check the meta tag 4945 if (nativeCursorWantsKeyEvents() || true) { 4946 // pass the key to DOM 4947 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4948 // return true as DOM handles the key 4949 return true; 4950 } 4951 4952 // Bubble up the key event as WebView doesn't handle it 4953 return false; 4954 } 4955 4956 @Override 4957 public boolean onKeyUp(int keyCode, KeyEvent event) { 4958 if (DebugFlags.WEB_VIEW) { 4959 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4960 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4961 } 4962 4963 if (mNativeClass == 0) { 4964 return false; 4965 } 4966 4967 // special CALL handling when cursor node's href is "tel:XXX" 4968 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4969 String text = nativeCursorText(); 4970 if (!nativeCursorIsTextInput() && text != null 4971 && text.startsWith(SCHEME_TEL)) { 4972 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4973 getContext().startActivity(intent); 4974 return true; 4975 } 4976 } 4977 4978 // Bubble up the key event if 4979 // 1. it is a system key; or 4980 // 2. the host application wants to handle it; 4981 if (event.isSystem() 4982 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4983 return false; 4984 } 4985 4986 // accessibility support 4987 if (accessibilityScriptInjected()) { 4988 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4989 // if an accessibility script is injected we delegate to it the key handling. 4990 // this script is a screen reader which is a fully fledged solution for blind 4991 // users to navigate in and interact with web pages. 4992 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4993 return true; 4994 } else { 4995 // Clean up if accessibility was disabled after loading the current URL. 4996 mAccessibilityScriptInjected = false; 4997 } 4998 } else if (mAccessibilityInjector != null) { 4999 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5000 if (mAccessibilityInjector.onKeyEvent(event)) { 5001 // if an accessibility injector is present (no JavaScript enabled or the site 5002 // opts out injecting our JavaScript screen reader) we let it decide whether to 5003 // act on and consume the event. 5004 return true; 5005 } 5006 } else { 5007 // Clean up if accessibility was disabled after loading the current URL. 5008 mAccessibilityInjector = null; 5009 } 5010 } 5011 5012 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5013 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5014 if (nativePageShouldHandleShiftAndArrows()) { 5015 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5016 return true; 5017 } 5018 // always handle the navigation keys in the UI thread 5019 // Bubble up the key event as WebView doesn't handle it 5020 return false; 5021 } 5022 5023 if (isEnterActionKey(keyCode)) { 5024 // remove the long press message first 5025 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5026 mGotCenterDown = false; 5027 5028 if (mSelectingText) { 5029 if (mExtendSelection) { 5030 copySelection(); 5031 selectionDone(); 5032 } else { 5033 mExtendSelection = true; 5034 nativeSetExtendSelection(); 5035 invalidate(); // draw the i-beam instead of the arrow 5036 } 5037 return true; // discard press if copy in progress 5038 } 5039 5040 // perform the single click 5041 Rect visibleRect = sendOurVisibleRect(); 5042 // Note that sendOurVisibleRect calls viewToContent, so the 5043 // coordinates should be in content coordinates. 5044 if (!nativeCursorIntersects(visibleRect)) { 5045 return false; 5046 } 5047 WebViewCore.CursorData data = cursorData(); 5048 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5049 playSoundEffect(SoundEffectConstants.CLICK); 5050 if (nativeCursorIsTextInput()) { 5051 rebuildWebTextView(); 5052 centerKeyPressOnTextField(); 5053 if (inEditingMode()) { 5054 mWebTextView.setDefaultSelection(); 5055 } 5056 return true; 5057 } 5058 clearTextEntry(); 5059 nativeShowCursorTimed(); 5060 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5061 return true; 5062 } 5063 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5064 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5065 nativeCursorNodePointer()); 5066 return true; 5067 } 5068 } 5069 5070 // TODO: should we pass all the keys to DOM or check the meta tag 5071 if (nativeCursorWantsKeyEvents() || true) { 5072 // pass the key to DOM 5073 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5074 // return true as DOM handles the key 5075 return true; 5076 } 5077 5078 // Bubble up the key event as WebView doesn't handle it 5079 return false; 5080 } 5081 5082 /* 5083 * Enter selecting text mode, and see if CAB should be shown. 5084 * Returns true if the WebView is now in 5085 * selecting text mode (including if it was already in that mode, and this 5086 * method did nothing). 5087 */ 5088 private boolean setUpSelect(boolean selectWord, int x, int y) { 5089 if (0 == mNativeClass) return false; // client isn't initialized 5090 if (inFullScreenMode()) return false; 5091 if (mSelectingText) return true; 5092 nativeResetSelection(); 5093 if (selectWord && !nativeWordSelection(x, y)) { 5094 selectionDone(); 5095 return false; 5096 } 5097 mSelectCallback = new SelectActionModeCallback(); 5098 mSelectCallback.setWebView(this); 5099 if (startActionMode(mSelectCallback) == null) { 5100 // There is no ActionMode, so do not allow the user to modify a 5101 // selection. 5102 selectionDone(); 5103 return false; 5104 } 5105 mExtendSelection = false; 5106 mSelectingText = mDrawSelectionPointer = true; 5107 // don't let the picture change during text selection 5108 WebViewCore.pauseUpdatePicture(mWebViewCore); 5109 if (nativeHasCursorNode()) { 5110 Rect rect = nativeCursorNodeBounds(); 5111 mSelectX = contentToViewX(rect.left); 5112 mSelectY = contentToViewY(rect.top); 5113 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5114 mSelectX = mScrollX + mLastTouchX; 5115 mSelectY = mScrollY + mLastTouchY; 5116 } else { 5117 mSelectX = mScrollX + getViewWidth() / 2; 5118 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5119 } 5120 nativeHideCursor(); 5121 mMinAutoScrollX = 0; 5122 mMaxAutoScrollX = getViewWidth(); 5123 mMinAutoScrollY = 0; 5124 mMaxAutoScrollY = getViewHeightWithTitle(); 5125 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 5126 viewToContentY(mSelectY), mScrollingLayerRect, 5127 mScrollingLayerBounds); 5128 if (mScrollingLayer != 0) { 5129 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5130 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5131 contentToViewX(mScrollingLayerBounds.left)); 5132 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5133 contentToViewX(mScrollingLayerBounds.right)); 5134 } 5135 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5136 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5137 contentToViewY(mScrollingLayerBounds.top)); 5138 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5139 contentToViewY(mScrollingLayerBounds.bottom)); 5140 } 5141 } 5142 mMinAutoScrollX += SELECT_SCROLL; 5143 mMaxAutoScrollX -= SELECT_SCROLL; 5144 mMinAutoScrollY += SELECT_SCROLL; 5145 mMaxAutoScrollY -= SELECT_SCROLL; 5146 return true; 5147 } 5148 5149 /** 5150 * Use this method to put the WebView into text selection mode. 5151 * Do not rely on this functionality; it will be deprecated in the future. 5152 * @deprecated This method is now obsolete. 5153 */ 5154 @Deprecated 5155 public void emulateShiftHeld() { 5156 checkThread(); 5157 setUpSelect(false, 0, 0); 5158 } 5159 5160 /** 5161 * Select all of the text in this WebView. 5162 * 5163 * @hide pending API council approval. 5164 */ 5165 public void selectAll() { 5166 if (0 == mNativeClass) return; // client isn't initialized 5167 if (inFullScreenMode()) return; 5168 if (!mSelectingText) { 5169 // retrieve a point somewhere within the text 5170 Point select = nativeSelectableText(); 5171 if (!selectText(select.x, select.y)) return; 5172 } 5173 nativeSelectAll(); 5174 mDrawSelectionPointer = false; 5175 mExtendSelection = true; 5176 invalidate(); 5177 } 5178 5179 /** 5180 * Called when the selection has been removed. 5181 */ 5182 void selectionDone() { 5183 if (mSelectingText) { 5184 mSelectingText = false; 5185 // finish is idempotent, so this is fine even if selectionDone was 5186 // called by mSelectCallback.onDestroyActionMode 5187 mSelectCallback.finish(); 5188 mSelectCallback = null; 5189 WebViewCore.resumePriority(); 5190 WebViewCore.resumeUpdatePicture(mWebViewCore); 5191 invalidate(); // redraw without selection 5192 mAutoScrollX = 0; 5193 mAutoScrollY = 0; 5194 mSentAutoScrollMessage = false; 5195 } 5196 } 5197 5198 /** 5199 * Copy the selection to the clipboard 5200 * 5201 * @hide pending API council approval. 5202 */ 5203 public boolean copySelection() { 5204 boolean copiedSomething = false; 5205 String selection = getSelection(); 5206 if (selection != null && selection != "") { 5207 if (DebugFlags.WEB_VIEW) { 5208 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5209 } 5210 Toast.makeText(mContext 5211 , com.android.internal.R.string.text_copied 5212 , Toast.LENGTH_SHORT).show(); 5213 copiedSomething = true; 5214 ClipboardManager cm = (ClipboardManager)getContext() 5215 .getSystemService(Context.CLIPBOARD_SERVICE); 5216 cm.setText(selection); 5217 } 5218 invalidate(); // remove selection region and pointer 5219 return copiedSomething; 5220 } 5221 5222 /** 5223 * @hide pending API Council approval. 5224 */ 5225 public SearchBox getSearchBox() { 5226 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5227 return null; 5228 } 5229 return mWebViewCore.getBrowserFrame().getSearchBox(); 5230 } 5231 5232 /** 5233 * Returns the currently highlighted text as a string. 5234 */ 5235 String getSelection() { 5236 if (mNativeClass == 0) return ""; 5237 return nativeGetSelection(); 5238 } 5239 5240 @Override 5241 protected void onAttachedToWindow() { 5242 super.onAttachedToWindow(); 5243 if (hasWindowFocus()) setActive(true); 5244 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5245 if (mGlobalLayoutListener == null) { 5246 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5247 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5248 } 5249 if (mScrollChangedListener == null) { 5250 mScrollChangedListener = new InnerScrollChangedListener(); 5251 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5252 } 5253 5254 addAccessibilityApisToJavaScript(); 5255 5256 mTouchEventQueue.reset(); 5257 } 5258 5259 @Override 5260 protected void onDetachedFromWindow() { 5261 clearHelpers(); 5262 mZoomManager.dismissZoomPicker(); 5263 if (hasWindowFocus()) setActive(false); 5264 5265 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5266 if (mGlobalLayoutListener != null) { 5267 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5268 mGlobalLayoutListener = null; 5269 } 5270 if (mScrollChangedListener != null) { 5271 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5272 mScrollChangedListener = null; 5273 } 5274 5275 removeAccessibilityApisFromJavaScript(); 5276 5277 super.onDetachedFromWindow(); 5278 } 5279 5280 @Override 5281 protected void onVisibilityChanged(View changedView, int visibility) { 5282 super.onVisibilityChanged(changedView, visibility); 5283 // The zoomManager may be null if the webview is created from XML that 5284 // specifies the view's visibility param as not visible (see http://b/2794841) 5285 if (visibility != View.VISIBLE && mZoomManager != null) { 5286 mZoomManager.dismissZoomPicker(); 5287 } 5288 } 5289 5290 /** 5291 * @deprecated WebView no longer needs to implement 5292 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5293 */ 5294 @Deprecated 5295 public void onChildViewAdded(View parent, View child) {} 5296 5297 /** 5298 * @deprecated WebView no longer needs to implement 5299 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5300 */ 5301 @Deprecated 5302 public void onChildViewRemoved(View p, View child) {} 5303 5304 /** 5305 * @deprecated WebView should not have implemented 5306 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5307 */ 5308 @Deprecated 5309 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5310 } 5311 5312 void setActive(boolean active) { 5313 if (active) { 5314 if (hasFocus()) { 5315 // If our window regained focus, and we have focus, then begin 5316 // drawing the cursor ring 5317 mDrawCursorRing = true; 5318 setFocusControllerActive(true); 5319 if (mNativeClass != 0) { 5320 nativeRecordButtons(true, false, true); 5321 } 5322 } else { 5323 if (!inEditingMode()) { 5324 // If our window gained focus, but we do not have it, do not 5325 // draw the cursor ring. 5326 mDrawCursorRing = false; 5327 setFocusControllerActive(false); 5328 } 5329 // We do not call nativeRecordButtons here because we assume 5330 // that when we lost focus, or window focus, it got called with 5331 // false for the first parameter 5332 } 5333 } else { 5334 if (!mZoomManager.isZoomPickerVisible()) { 5335 /* 5336 * The external zoom controls come in their own window, so our 5337 * window loses focus. Our policy is to not draw the cursor ring 5338 * if our window is not focused, but this is an exception since 5339 * the user can still navigate the web page with the zoom 5340 * controls showing. 5341 */ 5342 mDrawCursorRing = false; 5343 } 5344 mKeysPressed.clear(); 5345 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5346 mTouchMode = TOUCH_DONE_MODE; 5347 if (mNativeClass != 0) { 5348 nativeRecordButtons(false, false, true); 5349 } 5350 setFocusControllerActive(false); 5351 } 5352 invalidate(); 5353 } 5354 5355 // To avoid drawing the cursor ring, and remove the TextView when our window 5356 // loses focus. 5357 @Override 5358 public void onWindowFocusChanged(boolean hasWindowFocus) { 5359 setActive(hasWindowFocus); 5360 if (hasWindowFocus) { 5361 JWebCoreJavaBridge.setActiveWebView(this); 5362 } else { 5363 JWebCoreJavaBridge.removeActiveWebView(this); 5364 } 5365 super.onWindowFocusChanged(hasWindowFocus); 5366 } 5367 5368 /* 5369 * Pass a message to WebCore Thread, telling the WebCore::Page's 5370 * FocusController to be "inactive" so that it will 5371 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5372 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5373 */ 5374 /* package */ void setFocusControllerActive(boolean active) { 5375 if (mWebViewCore == null) return; 5376 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5377 // Need to send this message after the document regains focus. 5378 if (active && mListBoxMessage != null) { 5379 mWebViewCore.sendMessage(mListBoxMessage); 5380 mListBoxMessage = null; 5381 } 5382 } 5383 5384 @Override 5385 protected void onFocusChanged(boolean focused, int direction, 5386 Rect previouslyFocusedRect) { 5387 if (DebugFlags.WEB_VIEW) { 5388 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5389 } 5390 if (focused) { 5391 // When we regain focus, if we have window focus, resume drawing 5392 // the cursor ring 5393 if (hasWindowFocus()) { 5394 mDrawCursorRing = true; 5395 if (mNativeClass != 0) { 5396 nativeRecordButtons(true, false, true); 5397 } 5398 setFocusControllerActive(true); 5399 //} else { 5400 // The WebView has gained focus while we do not have 5401 // windowfocus. When our window lost focus, we should have 5402 // called nativeRecordButtons(false...) 5403 } 5404 } else { 5405 // When we lost focus, unless focus went to the TextView (which is 5406 // true if we are in editing mode), stop drawing the cursor ring. 5407 if (!inEditingMode()) { 5408 mDrawCursorRing = false; 5409 if (mNativeClass != 0) { 5410 nativeRecordButtons(false, false, true); 5411 } 5412 setFocusControllerActive(false); 5413 } 5414 mKeysPressed.clear(); 5415 } 5416 5417 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5418 } 5419 5420 void setGLRectViewport() { 5421 // Use the getGlobalVisibleRect() to get the intersection among the parents 5422 // visible == false means we're clipped - send a null rect down to indicate that 5423 // we should not draw 5424 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5425 if (visible) { 5426 // Then need to invert the Y axis, just for GL 5427 View rootView = getRootView(); 5428 int rootViewHeight = rootView.getHeight(); 5429 mViewRectViewport.set(mGLRectViewport); 5430 int savedWebViewBottom = mGLRectViewport.bottom; 5431 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5432 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5433 mGLViewportEmpty = false; 5434 } else { 5435 mGLViewportEmpty = true; 5436 } 5437 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5438 mGLViewportEmpty ? null : mViewRectViewport); 5439 } 5440 5441 /** 5442 * @hide 5443 */ 5444 @Override 5445 protected boolean setFrame(int left, int top, int right, int bottom) { 5446 boolean changed = super.setFrame(left, top, right, bottom); 5447 if (!changed && mHeightCanMeasure) { 5448 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5449 // in WebViewCore after we get the first layout. We do call 5450 // requestLayout() when we get contentSizeChanged(). But the View 5451 // system won't call onSizeChanged if the dimension is not changed. 5452 // In this case, we need to call sendViewSizeZoom() explicitly to 5453 // notify the WebKit about the new dimensions. 5454 sendViewSizeZoom(false); 5455 } 5456 setGLRectViewport(); 5457 return changed; 5458 } 5459 5460 @Override 5461 protected void onSizeChanged(int w, int h, int ow, int oh) { 5462 super.onSizeChanged(w, h, ow, oh); 5463 5464 // adjust the max viewport width depending on the view dimensions. This 5465 // is to ensure the scaling is not going insane. So do not shrink it if 5466 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5467 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5468 if (newMaxViewportWidth > sMaxViewportWidth) { 5469 sMaxViewportWidth = newMaxViewportWidth; 5470 } 5471 5472 mZoomManager.onSizeChanged(w, h, ow, oh); 5473 } 5474 5475 @Override 5476 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5477 super.onScrollChanged(l, t, oldl, oldt); 5478 if (!mInOverScrollMode) { 5479 sendOurVisibleRect(); 5480 // update WebKit if visible title bar height changed. The logic is same 5481 // as getVisibleTitleHeightImpl. 5482 int titleHeight = getTitleHeight(); 5483 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5484 sendViewSizeZoom(false); 5485 } 5486 } 5487 } 5488 5489 @Override 5490 public boolean dispatchKeyEvent(KeyEvent event) { 5491 switch (event.getAction()) { 5492 case KeyEvent.ACTION_DOWN: 5493 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5494 break; 5495 case KeyEvent.ACTION_MULTIPLE: 5496 // Always accept the action. 5497 break; 5498 case KeyEvent.ACTION_UP: 5499 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5500 if (location == -1) { 5501 // We did not receive the key down for this key, so do not 5502 // handle the key up. 5503 return false; 5504 } else { 5505 // We did receive the key down. Handle the key up, and 5506 // remove it from our pressed keys. 5507 mKeysPressed.remove(location); 5508 } 5509 break; 5510 default: 5511 // Accept the action. This should not happen, unless a new 5512 // action is added to KeyEvent. 5513 break; 5514 } 5515 if (inEditingMode() && mWebTextView.isFocused()) { 5516 // Ensure that the WebTextView gets the event, even if it does 5517 // not currently have a bounds. 5518 return mWebTextView.dispatchKeyEvent(event); 5519 } else { 5520 return super.dispatchKeyEvent(event); 5521 } 5522 } 5523 5524 // Here are the snap align logic: 5525 // 1. If it starts nearly horizontally or vertically, snap align; 5526 // 2. If there is a dramitic direction change, let it go; 5527 // 3. If there is a same direction back and forth, lock it. 5528 5529 // adjustable parameters 5530 private int mMinLockSnapReverseDistance; 5531 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5532 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5533 5534 private boolean hitFocusedPlugin(int contentX, int contentY) { 5535 if (DebugFlags.WEB_VIEW) { 5536 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5537 Rect r = nativeFocusNodeBounds(); 5538 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5539 + ", " + r.right + ", " + r.bottom + ")"); 5540 } 5541 return nativeFocusIsPlugin() 5542 && nativeFocusNodeBounds().contains(contentX, contentY); 5543 } 5544 5545 private boolean shouldForwardTouchEvent() { 5546 return mFullScreenHolder != null || (mForwardTouchEvents 5547 && !mSelectingText 5548 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5549 && mPreventDefault != PREVENT_DEFAULT_NO); 5550 } 5551 5552 private boolean inFullScreenMode() { 5553 return mFullScreenHolder != null; 5554 } 5555 5556 private void dismissFullScreenMode() { 5557 if (inFullScreenMode()) { 5558 mFullScreenHolder.dismiss(); 5559 mFullScreenHolder = null; 5560 } 5561 } 5562 5563 void onPinchToZoomAnimationStart() { 5564 // cancel the single touch handling 5565 cancelTouch(); 5566 onZoomAnimationStart(); 5567 } 5568 5569 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5570 onZoomAnimationEnd(); 5571 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5572 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5573 // as it may trigger the unwanted fling. 5574 mTouchMode = TOUCH_PINCH_DRAG; 5575 mConfirmMove = true; 5576 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5577 } 5578 5579 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5580 // layer is found. 5581 private void startScrollingLayer(float x, float y) { 5582 int contentX = viewToContentX((int) x + mScrollX); 5583 int contentY = viewToContentY((int) y + mScrollY); 5584 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5585 mScrollingLayerRect, mScrollingLayerBounds); 5586 if (mScrollingLayer != 0) { 5587 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5588 } 5589 } 5590 5591 // 1/(density * density) used to compute the distance between points. 5592 // Computed in init(). 5593 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5594 5595 // The distance between two points reported in onTouchEvent scaled by the 5596 // density of the screen. 5597 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5598 5599 @Override 5600 public boolean onHoverEvent(MotionEvent event) { 5601 if (mNativeClass == 0) { 5602 return false; 5603 } 5604 WebViewCore.CursorData data = cursorDataNoPosition(); 5605 data.mX = viewToContentX((int) event.getX()); 5606 data.mY = viewToContentY((int) event.getY()); 5607 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5608 return true; 5609 } 5610 5611 @Override 5612 public boolean onTouchEvent(MotionEvent ev) { 5613 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5614 return false; 5615 } 5616 5617 if (DebugFlags.WEB_VIEW) { 5618 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5619 + " mTouchMode=" + mTouchMode 5620 + " numPointers=" + ev.getPointerCount()); 5621 } 5622 5623 // If WebKit wasn't interested in this multitouch gesture, enqueue 5624 // the event for handling directly rather than making the round trip 5625 // to WebKit and back. 5626 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5627 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5628 } else { 5629 mTouchEventQueue.enqueueTouchEvent(ev); 5630 } 5631 5632 // Since all events are handled asynchronously, we always want the gesture stream. 5633 return true; 5634 } 5635 5636 /* 5637 * Common code for single touch and multi-touch. 5638 * (x, y) denotes current focus point, which is the touch point for single touch 5639 * and the middle point for multi-touch. 5640 */ 5641 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5642 long eventTime = ev.getEventTime(); 5643 5644 // Due to the touch screen edge effect, a touch closer to the edge 5645 // always snapped to the edge. As getViewWidth() can be different from 5646 // getWidth() due to the scrollbar, adjusting the point to match 5647 // getViewWidth(). Same applied to the height. 5648 x = Math.min(x, getViewWidth() - 1); 5649 y = Math.min(y, getViewHeightWithTitle() - 1); 5650 5651 int deltaX = mLastTouchX - x; 5652 int deltaY = mLastTouchY - y; 5653 int contentX = viewToContentX(x + mScrollX); 5654 int contentY = viewToContentY(y + mScrollY); 5655 5656 switch (action) { 5657 case MotionEvent.ACTION_DOWN: { 5658 mPreventDefault = PREVENT_DEFAULT_NO; 5659 mConfirmMove = false; 5660 mInitialHitTestResult = null; 5661 if (!mScroller.isFinished()) { 5662 // stop the current scroll animation, but if this is 5663 // the start of a fling, allow it to add to the current 5664 // fling's velocity 5665 mScroller.abortAnimation(); 5666 mTouchMode = TOUCH_DRAG_START_MODE; 5667 mConfirmMove = true; 5668 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5669 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5670 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5671 if (getSettings().supportTouchOnly()) { 5672 removeTouchHighlight(true); 5673 } 5674 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5675 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5676 } else { 5677 // commit the short press action for the previous tap 5678 doShortPress(); 5679 mTouchMode = TOUCH_INIT_MODE; 5680 mDeferTouchProcess = (!inFullScreenMode() 5681 && mForwardTouchEvents) ? hitFocusedPlugin( 5682 contentX, contentY) : false; 5683 } 5684 } else { // the normal case 5685 mTouchMode = TOUCH_INIT_MODE; 5686 mDeferTouchProcess = (!inFullScreenMode() 5687 && mForwardTouchEvents) ? hitFocusedPlugin( 5688 contentX, contentY) : false; 5689 mWebViewCore.sendMessage( 5690 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5691 if (getSettings().supportTouchOnly()) { 5692 TouchHighlightData data = new TouchHighlightData(); 5693 data.mX = contentX; 5694 data.mY = contentY; 5695 data.mSlop = viewToContentDimension(mNavSlop); 5696 mWebViewCore.sendMessageDelayed( 5697 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5698 ViewConfiguration.getTapTimeout()); 5699 if (DEBUG_TOUCH_HIGHLIGHT) { 5700 if (getSettings().getNavDump()) { 5701 mTouchHighlightX = (int) x + mScrollX; 5702 mTouchHighlightY = (int) y + mScrollY; 5703 mPrivateHandler.postDelayed(new Runnable() { 5704 public void run() { 5705 mTouchHighlightX = mTouchHighlightY = 0; 5706 invalidate(); 5707 } 5708 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5709 } 5710 } 5711 } 5712 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5713 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5714 (eventTime - mLastTouchUpTime), eventTime); 5715 } 5716 if (mSelectingText) { 5717 mDrawSelectionPointer = false; 5718 mSelectionStarted = nativeStartSelection(contentX, contentY); 5719 if (DebugFlags.WEB_VIEW) { 5720 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5721 } 5722 invalidate(); 5723 } 5724 } 5725 // Trigger the link 5726 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5727 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5728 mPrivateHandler.sendEmptyMessageDelayed( 5729 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5730 mPrivateHandler.sendEmptyMessageDelayed( 5731 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5732 if (inFullScreenMode() || mDeferTouchProcess) { 5733 mPreventDefault = PREVENT_DEFAULT_YES; 5734 } else if (mForwardTouchEvents) { 5735 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5736 } else { 5737 mPreventDefault = PREVENT_DEFAULT_NO; 5738 } 5739 // pass the touch events from UI thread to WebCore thread 5740 if (shouldForwardTouchEvent()) { 5741 TouchEventData ted = new TouchEventData(); 5742 ted.mAction = action; 5743 ted.mIds = new int[1]; 5744 ted.mIds[0] = ev.getPointerId(0); 5745 ted.mPoints = new Point[1]; 5746 ted.mPoints[0] = new Point(contentX, contentY); 5747 ted.mPointsInView = new Point[1]; 5748 ted.mPointsInView[0] = new Point(x, y); 5749 ted.mMetaState = ev.getMetaState(); 5750 ted.mReprocess = mDeferTouchProcess; 5751 ted.mNativeLayer = nativeScrollableLayer( 5752 contentX, contentY, ted.mNativeLayerRect, null); 5753 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5754 mTouchEventQueue.preQueueTouchEventData(ted); 5755 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5756 if (mDeferTouchProcess) { 5757 // still needs to set them for compute deltaX/Y 5758 mLastTouchX = x; 5759 mLastTouchY = y; 5760 break; 5761 } 5762 if (!inFullScreenMode()) { 5763 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5764 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5765 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5766 action, 0), TAP_TIMEOUT); 5767 } 5768 } 5769 } 5770 startTouch(x, y, eventTime); 5771 break; 5772 } 5773 case MotionEvent.ACTION_MOVE: { 5774 boolean firstMove = false; 5775 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5776 >= mTouchSlopSquare) { 5777 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5778 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5779 mConfirmMove = true; 5780 firstMove = true; 5781 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5782 mTouchMode = TOUCH_INIT_MODE; 5783 } 5784 if (getSettings().supportTouchOnly()) { 5785 removeTouchHighlight(true); 5786 } 5787 } 5788 // pass the touch events from UI thread to WebCore thread 5789 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5790 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5791 TouchEventData ted = new TouchEventData(); 5792 ted.mAction = action; 5793 ted.mIds = new int[1]; 5794 ted.mIds[0] = ev.getPointerId(0); 5795 ted.mPoints = new Point[1]; 5796 ted.mPoints[0] = new Point(contentX, contentY); 5797 ted.mPointsInView = new Point[1]; 5798 ted.mPointsInView[0] = new Point(x, y); 5799 ted.mMetaState = ev.getMetaState(); 5800 ted.mReprocess = mDeferTouchProcess; 5801 ted.mNativeLayer = mScrollingLayer; 5802 ted.mNativeLayerRect.set(mScrollingLayerRect); 5803 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5804 mTouchEventQueue.preQueueTouchEventData(ted); 5805 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5806 mLastSentTouchTime = eventTime; 5807 if (mDeferTouchProcess) { 5808 break; 5809 } 5810 if (firstMove && !inFullScreenMode()) { 5811 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5812 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5813 action, 0), TAP_TIMEOUT); 5814 } 5815 } 5816 if (mTouchMode == TOUCH_DONE_MODE 5817 || mPreventDefault == PREVENT_DEFAULT_YES) { 5818 // no dragging during scroll zoom animation, or when prevent 5819 // default is yes 5820 break; 5821 } 5822 if (mVelocityTracker == null) { 5823 Log.e(LOGTAG, "Got null mVelocityTracker when " 5824 + "mPreventDefault = " + mPreventDefault 5825 + " mDeferTouchProcess = " + mDeferTouchProcess 5826 + " mTouchMode = " + mTouchMode); 5827 } else { 5828 mVelocityTracker.addMovement(ev); 5829 } 5830 if (mSelectingText && mSelectionStarted) { 5831 if (DebugFlags.WEB_VIEW) { 5832 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5833 } 5834 ViewParent parent = getParent(); 5835 if (parent != null) { 5836 parent.requestDisallowInterceptTouchEvent(true); 5837 } 5838 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5839 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5840 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5841 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5842 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5843 && !mSentAutoScrollMessage) { 5844 mSentAutoScrollMessage = true; 5845 mPrivateHandler.sendEmptyMessageDelayed( 5846 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5847 } 5848 if (deltaX != 0 || deltaY != 0) { 5849 nativeExtendSelection(contentX, contentY); 5850 invalidate(); 5851 } 5852 break; 5853 } 5854 5855 if (mTouchMode != TOUCH_DRAG_MODE && 5856 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5857 5858 if (!mConfirmMove) { 5859 break; 5860 } 5861 5862 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5863 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5864 // track mLastTouchTime as we may need to do fling at 5865 // ACTION_UP 5866 mLastTouchTime = eventTime; 5867 break; 5868 } 5869 5870 // Only lock dragging to one axis if we don't have a scale in progress. 5871 // Scaling implies free-roaming movement. Note this is only ever a question 5872 // if mZoomManager.supportsPanDuringZoom() is true. 5873 final ScaleGestureDetector detector = 5874 mZoomManager.getMultiTouchGestureDetector(); 5875 if (detector == null || !detector.isInProgress()) { 5876 // if it starts nearly horizontal or vertical, enforce it 5877 int ax = Math.abs(deltaX); 5878 int ay = Math.abs(deltaY); 5879 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5880 mSnapScrollMode = SNAP_X; 5881 mSnapPositive = deltaX > 0; 5882 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5883 mSnapScrollMode = SNAP_Y; 5884 mSnapPositive = deltaY > 0; 5885 } 5886 } 5887 5888 mTouchMode = TOUCH_DRAG_MODE; 5889 mLastTouchX = x; 5890 mLastTouchY = y; 5891 deltaX = 0; 5892 deltaY = 0; 5893 5894 startScrollingLayer(x, y); 5895 startDrag(); 5896 } 5897 5898 // do pan 5899 boolean done = false; 5900 boolean keepScrollBarsVisible = false; 5901 if (deltaX == 0 && deltaY == 0) { 5902 keepScrollBarsVisible = done = true; 5903 } else { 5904 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5905 int ax = Math.abs(deltaX); 5906 int ay = Math.abs(deltaY); 5907 if (mSnapScrollMode == SNAP_X) { 5908 // radical change means getting out of snap mode 5909 if (ay > MAX_SLOPE_FOR_DIAG * ax 5910 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5911 mSnapScrollMode = SNAP_NONE; 5912 } 5913 // reverse direction means lock in the snap mode 5914 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5915 (mSnapPositive 5916 ? deltaX < -mMinLockSnapReverseDistance 5917 : deltaX > mMinLockSnapReverseDistance)) { 5918 mSnapScrollMode |= SNAP_LOCK; 5919 } 5920 } else { 5921 // radical change means getting out of snap mode 5922 if (ax > MAX_SLOPE_FOR_DIAG * ay 5923 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5924 mSnapScrollMode = SNAP_NONE; 5925 } 5926 // reverse direction means lock in the snap mode 5927 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5928 (mSnapPositive 5929 ? deltaY < -mMinLockSnapReverseDistance 5930 : deltaY > mMinLockSnapReverseDistance)) { 5931 mSnapScrollMode |= SNAP_LOCK; 5932 } 5933 } 5934 } 5935 if (mSnapScrollMode != SNAP_NONE) { 5936 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5937 deltaY = 0; 5938 } else { 5939 deltaX = 0; 5940 } 5941 } 5942 if ((deltaX | deltaY) != 0) { 5943 if (deltaX != 0) { 5944 mLastTouchX = x; 5945 } 5946 if (deltaY != 0) { 5947 mLastTouchY = y; 5948 } 5949 mHeldMotionless = MOTIONLESS_FALSE; 5950 } 5951 mLastTouchTime = eventTime; 5952 } 5953 5954 doDrag(deltaX, deltaY); 5955 5956 // Turn off scrollbars when dragging a layer. 5957 if (keepScrollBarsVisible && 5958 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5959 if (mHeldMotionless != MOTIONLESS_TRUE) { 5960 mHeldMotionless = MOTIONLESS_TRUE; 5961 invalidate(); 5962 } 5963 // keep the scrollbar on the screen even there is no scroll 5964 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5965 false); 5966 // return false to indicate that we can't pan out of the 5967 // view space 5968 return !done; 5969 } 5970 break; 5971 } 5972 case MotionEvent.ACTION_UP: { 5973 if (!isFocused()) requestFocus(); 5974 // pass the touch events from UI thread to WebCore thread 5975 if (shouldForwardTouchEvent()) { 5976 TouchEventData ted = new TouchEventData(); 5977 ted.mIds = new int[1]; 5978 ted.mIds[0] = ev.getPointerId(0); 5979 ted.mAction = action; 5980 ted.mPoints = new Point[1]; 5981 ted.mPoints[0] = new Point(contentX, contentY); 5982 ted.mPointsInView = new Point[1]; 5983 ted.mPointsInView[0] = new Point(x, y); 5984 ted.mMetaState = ev.getMetaState(); 5985 ted.mReprocess = mDeferTouchProcess; 5986 ted.mNativeLayer = mScrollingLayer; 5987 ted.mNativeLayerRect.set(mScrollingLayerRect); 5988 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5989 mTouchEventQueue.preQueueTouchEventData(ted); 5990 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5991 } 5992 mLastTouchUpTime = eventTime; 5993 if (mSentAutoScrollMessage) { 5994 mAutoScrollX = mAutoScrollY = 0; 5995 } 5996 switch (mTouchMode) { 5997 case TOUCH_DOUBLE_TAP_MODE: // double tap 5998 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5999 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6000 if (inFullScreenMode() || mDeferTouchProcess) { 6001 TouchEventData ted = new TouchEventData(); 6002 ted.mIds = new int[1]; 6003 ted.mIds[0] = ev.getPointerId(0); 6004 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6005 ted.mPoints = new Point[1]; 6006 ted.mPoints[0] = new Point(contentX, contentY); 6007 ted.mPointsInView = new Point[1]; 6008 ted.mPointsInView[0] = new Point(x, y); 6009 ted.mMetaState = ev.getMetaState(); 6010 ted.mReprocess = mDeferTouchProcess; 6011 ted.mNativeLayer = nativeScrollableLayer( 6012 contentX, contentY, 6013 ted.mNativeLayerRect, null); 6014 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6015 mTouchEventQueue.preQueueTouchEventData(ted); 6016 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6017 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6018 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6019 mTouchMode = TOUCH_DONE_MODE; 6020 } 6021 break; 6022 case TOUCH_INIT_MODE: // tap 6023 case TOUCH_SHORTPRESS_START_MODE: 6024 case TOUCH_SHORTPRESS_MODE: 6025 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6026 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6027 if (mConfirmMove) { 6028 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6029 " WebCore's response for touch down."); 6030 if (mPreventDefault != PREVENT_DEFAULT_YES 6031 && (computeMaxScrollX() > 0 6032 || computeMaxScrollY() > 0)) { 6033 // If the user has performed a very quick touch 6034 // sequence it is possible that we may get here 6035 // before WebCore has had a chance to process the events. 6036 // In this case, any call to preventDefault in the 6037 // JS touch handler will not have been executed yet. 6038 // Hence we will see both the UI (now) and WebCore 6039 // (when context switches) handling the event, 6040 // regardless of whether the web developer actually 6041 // doeses preventDefault in their touch handler. This 6042 // is the nature of our asynchronous touch model. 6043 6044 // we will not rewrite drag code here, but we 6045 // will try fling if it applies. 6046 WebViewCore.reducePriority(); 6047 // to get better performance, pause updating the 6048 // picture 6049 WebViewCore.pauseUpdatePicture(mWebViewCore); 6050 // fall through to TOUCH_DRAG_MODE 6051 } else { 6052 // WebKit may consume the touch event and modify 6053 // DOM. drawContentPicture() will be called with 6054 // animateSroll as true for better performance. 6055 // Force redraw in high-quality. 6056 invalidate(); 6057 break; 6058 } 6059 } else { 6060 if (mSelectingText) { 6061 // tapping on selection or controls does nothing 6062 if (!nativeHitSelection(contentX, contentY)) { 6063 selectionDone(); 6064 } 6065 break; 6066 } 6067 // only trigger double tap if the WebView is 6068 // scalable 6069 if (mTouchMode == TOUCH_INIT_MODE 6070 && (canZoomIn() || canZoomOut())) { 6071 mPrivateHandler.sendEmptyMessageDelayed( 6072 RELEASE_SINGLE_TAP, ViewConfiguration 6073 .getDoubleTapTimeout()); 6074 } else { 6075 doShortPress(); 6076 } 6077 break; 6078 } 6079 case TOUCH_DRAG_MODE: 6080 case TOUCH_DRAG_LAYER_MODE: 6081 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6082 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6083 // if the user waits a while w/o moving before the 6084 // up, we don't want to do a fling 6085 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6086 if (mVelocityTracker == null) { 6087 Log.e(LOGTAG, "Got null mVelocityTracker when " 6088 + "mPreventDefault = " 6089 + mPreventDefault 6090 + " mDeferTouchProcess = " 6091 + mDeferTouchProcess); 6092 } else { 6093 mVelocityTracker.addMovement(ev); 6094 } 6095 // set to MOTIONLESS_IGNORE so that it won't keep 6096 // removing and sending message in 6097 // drawCoreAndCursorRing() 6098 mHeldMotionless = MOTIONLESS_IGNORE; 6099 doFling(); 6100 break; 6101 } else { 6102 if (mScroller.springBack(mScrollX, mScrollY, 0, 6103 computeMaxScrollX(), 0, 6104 computeMaxScrollY())) { 6105 invalidate(); 6106 } 6107 } 6108 // redraw in high-quality, as we're done dragging 6109 mHeldMotionless = MOTIONLESS_TRUE; 6110 invalidate(); 6111 // fall through 6112 case TOUCH_DRAG_START_MODE: 6113 // TOUCH_DRAG_START_MODE should not happen for the real 6114 // device as we almost certain will get a MOVE. But this 6115 // is possible on emulator. 6116 mLastVelocity = 0; 6117 WebViewCore.resumePriority(); 6118 if (!mSelectingText) { 6119 WebViewCore.resumeUpdatePicture(mWebViewCore); 6120 } 6121 break; 6122 } 6123 stopTouch(); 6124 break; 6125 } 6126 case MotionEvent.ACTION_CANCEL: { 6127 if (mTouchMode == TOUCH_DRAG_MODE) { 6128 mScroller.springBack(mScrollX, mScrollY, 0, 6129 computeMaxScrollX(), 0, computeMaxScrollY()); 6130 invalidate(); 6131 } 6132 cancelWebCoreTouchEvent(contentX, contentY, false); 6133 cancelTouch(); 6134 break; 6135 } 6136 } 6137 return true; 6138 } 6139 6140 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6141 TouchEventData ted = new TouchEventData(); 6142 ted.mAction = ev.getActionMasked(); 6143 final int count = ev.getPointerCount(); 6144 ted.mIds = new int[count]; 6145 ted.mPoints = new Point[count]; 6146 ted.mPointsInView = new Point[count]; 6147 for (int c = 0; c < count; c++) { 6148 ted.mIds[c] = ev.getPointerId(c); 6149 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6150 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6151 ted.mPoints[c] = new Point(x, y); 6152 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6153 } 6154 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6155 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6156 ted.mActionIndex = ev.getActionIndex(); 6157 } 6158 ted.mMetaState = ev.getMetaState(); 6159 ted.mReprocess = true; 6160 ted.mMotionEvent = MotionEvent.obtain(ev); 6161 ted.mSequence = sequence; 6162 mTouchEventQueue.preQueueTouchEventData(ted); 6163 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6164 cancelLongPress(); 6165 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6166 } 6167 6168 void handleMultiTouchInWebView(MotionEvent ev) { 6169 if (DebugFlags.WEB_VIEW) { 6170 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6171 + " mTouchMode=" + mTouchMode 6172 + " numPointers=" + ev.getPointerCount() 6173 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6174 } 6175 6176 final ScaleGestureDetector detector = 6177 mZoomManager.getMultiTouchGestureDetector(); 6178 6179 // A few apps use WebView but don't instantiate gesture detector. 6180 // We don't need to support multi touch for them. 6181 if (detector == null) return; 6182 6183 float x = ev.getX(); 6184 float y = ev.getY(); 6185 6186 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6187 detector.onTouchEvent(ev); 6188 6189 if (detector.isInProgress()) { 6190 if (DebugFlags.WEB_VIEW) { 6191 Log.v(LOGTAG, "detector is in progress"); 6192 } 6193 mLastTouchTime = ev.getEventTime(); 6194 x = detector.getFocusX(); 6195 y = detector.getFocusY(); 6196 6197 cancelLongPress(); 6198 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6199 if (!mZoomManager.supportsPanDuringZoom()) { 6200 return; 6201 } 6202 mTouchMode = TOUCH_DRAG_MODE; 6203 if (mVelocityTracker == null) { 6204 mVelocityTracker = VelocityTracker.obtain(); 6205 } 6206 } 6207 } 6208 6209 int action = ev.getActionMasked(); 6210 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6211 cancelTouch(); 6212 action = MotionEvent.ACTION_DOWN; 6213 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() == 2) { 6214 // set mLastTouchX/Y to the remaining point 6215 mLastTouchX = Math.round(x); 6216 mLastTouchY = Math.round(y); 6217 } else if (action == MotionEvent.ACTION_MOVE) { 6218 // negative x or y indicate it is on the edge, skip it. 6219 if (x < 0 || y < 0) { 6220 return; 6221 } 6222 } 6223 6224 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6225 } 6226 6227 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6228 if (shouldForwardTouchEvent()) { 6229 if (removeEvents) { 6230 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6231 } 6232 TouchEventData ted = new TouchEventData(); 6233 ted.mIds = new int[1]; 6234 ted.mIds[0] = 0; 6235 ted.mPoints = new Point[1]; 6236 ted.mPoints[0] = new Point(x, y); 6237 ted.mPointsInView = new Point[1]; 6238 int viewX = contentToViewX(x) - mScrollX; 6239 int viewY = contentToViewY(y) - mScrollY; 6240 ted.mPointsInView[0] = new Point(viewX, viewY); 6241 ted.mAction = MotionEvent.ACTION_CANCEL; 6242 ted.mNativeLayer = nativeScrollableLayer( 6243 x, y, ted.mNativeLayerRect, null); 6244 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6245 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6246 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6247 6248 if (removeEvents) { 6249 // Mark this after sending the message above; we should 6250 // be willing to ignore the cancel event that we just sent. 6251 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6252 } 6253 } 6254 } 6255 6256 private void startTouch(float x, float y, long eventTime) { 6257 // Remember where the motion event started 6258 mLastTouchX = Math.round(x); 6259 mLastTouchY = Math.round(y); 6260 mLastTouchTime = eventTime; 6261 mVelocityTracker = VelocityTracker.obtain(); 6262 mSnapScrollMode = SNAP_NONE; 6263 } 6264 6265 private void startDrag() { 6266 WebViewCore.reducePriority(); 6267 // to get better performance, pause updating the picture 6268 WebViewCore.pauseUpdatePicture(mWebViewCore); 6269 if (!mDragFromTextInput) { 6270 nativeHideCursor(); 6271 } 6272 6273 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6274 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6275 mZoomManager.invokeZoomPicker(); 6276 } 6277 } 6278 6279 private void doDrag(int deltaX, int deltaY) { 6280 if ((deltaX | deltaY) != 0) { 6281 int oldX = mScrollX; 6282 int oldY = mScrollY; 6283 int rangeX = computeMaxScrollX(); 6284 int rangeY = computeMaxScrollY(); 6285 int overscrollDistance = mOverscrollDistance; 6286 6287 // Check for the original scrolling layer in case we change 6288 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6289 // reached the edge of a layer but mScrollingLayer will be non-zero 6290 // if we initiated the drag on a layer. 6291 if (mScrollingLayer != 0) { 6292 final int contentX = viewToContentDimension(deltaX); 6293 final int contentY = viewToContentDimension(deltaY); 6294 6295 // Check the scrolling bounds to see if we will actually do any 6296 // scrolling. The rectangle is in document coordinates. 6297 final int maxX = mScrollingLayerRect.right; 6298 final int maxY = mScrollingLayerRect.bottom; 6299 final int resultX = Math.max(0, 6300 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6301 final int resultY = Math.max(0, 6302 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6303 6304 if (resultX != mScrollingLayerRect.left || 6305 resultY != mScrollingLayerRect.top) { 6306 // In case we switched to dragging the page. 6307 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6308 deltaX = contentX; 6309 deltaY = contentY; 6310 oldX = mScrollingLayerRect.left; 6311 oldY = mScrollingLayerRect.top; 6312 rangeX = maxX; 6313 rangeY = maxY; 6314 } else { 6315 // Scroll the main page if we are not going to scroll the 6316 // layer. This does not reset mScrollingLayer in case the 6317 // user changes directions and the layer can scroll the 6318 // other way. 6319 mTouchMode = TOUCH_DRAG_MODE; 6320 } 6321 } 6322 6323 if (mOverScrollGlow != null) { 6324 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6325 } 6326 6327 overScrollBy(deltaX, deltaY, oldX, oldY, 6328 rangeX, rangeY, 6329 mOverscrollDistance, mOverscrollDistance, true); 6330 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6331 invalidate(); 6332 } 6333 } 6334 mZoomManager.keepZoomPickerVisible(); 6335 } 6336 6337 private void stopTouch() { 6338 // we also use mVelocityTracker == null to tell us that we are 6339 // not "moving around", so we can take the slower/prettier 6340 // mode in the drawing code 6341 if (mVelocityTracker != null) { 6342 mVelocityTracker.recycle(); 6343 mVelocityTracker = null; 6344 } 6345 6346 // Release any pulled glows 6347 if (mOverScrollGlow != null) { 6348 mOverScrollGlow.releaseAll(); 6349 } 6350 } 6351 6352 private void cancelTouch() { 6353 // we also use mVelocityTracker == null to tell us that we are 6354 // not "moving around", so we can take the slower/prettier 6355 // mode in the drawing code 6356 if (mVelocityTracker != null) { 6357 mVelocityTracker.recycle(); 6358 mVelocityTracker = null; 6359 } 6360 6361 if ((mTouchMode == TOUCH_DRAG_MODE 6362 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6363 WebViewCore.resumePriority(); 6364 WebViewCore.resumeUpdatePicture(mWebViewCore); 6365 } 6366 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6367 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6368 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6369 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6370 if (getSettings().supportTouchOnly()) { 6371 removeTouchHighlight(true); 6372 } 6373 mHeldMotionless = MOTIONLESS_TRUE; 6374 mTouchMode = TOUCH_DONE_MODE; 6375 nativeHideCursor(); 6376 } 6377 6378 @Override 6379 public boolean onGenericMotionEvent(MotionEvent event) { 6380 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6381 switch (event.getAction()) { 6382 case MotionEvent.ACTION_SCROLL: { 6383 final float vscroll; 6384 final float hscroll; 6385 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6386 vscroll = 0; 6387 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6388 } else { 6389 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6390 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6391 } 6392 if (hscroll != 0 || vscroll != 0) { 6393 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6394 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6395 if (pinScrollBy(hdelta, vdelta, true, 0)) { 6396 return true; 6397 } 6398 } 6399 } 6400 } 6401 } 6402 return super.onGenericMotionEvent(event); 6403 } 6404 6405 private long mTrackballFirstTime = 0; 6406 private long mTrackballLastTime = 0; 6407 private float mTrackballRemainsX = 0.0f; 6408 private float mTrackballRemainsY = 0.0f; 6409 private int mTrackballXMove = 0; 6410 private int mTrackballYMove = 0; 6411 private boolean mSelectingText = false; 6412 private boolean mSelectionStarted = false; 6413 private boolean mExtendSelection = false; 6414 private boolean mDrawSelectionPointer = false; 6415 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6416 private static final int TRACKBALL_TIMEOUT = 200; 6417 private static final int TRACKBALL_WAIT = 100; 6418 private static final int TRACKBALL_SCALE = 400; 6419 private static final int TRACKBALL_SCROLL_COUNT = 5; 6420 private static final int TRACKBALL_MOVE_COUNT = 10; 6421 private static final int TRACKBALL_MULTIPLIER = 3; 6422 private static final int SELECT_CURSOR_OFFSET = 16; 6423 private static final int SELECT_SCROLL = 5; 6424 private int mSelectX = 0; 6425 private int mSelectY = 0; 6426 private boolean mFocusSizeChanged = false; 6427 private boolean mTrackballDown = false; 6428 private long mTrackballUpTime = 0; 6429 private long mLastCursorTime = 0; 6430 private Rect mLastCursorBounds; 6431 6432 // Set by default; BrowserActivity clears to interpret trackball data 6433 // directly for movement. Currently, the framework only passes 6434 // arrow key events, not trackball events, from one child to the next 6435 private boolean mMapTrackballToArrowKeys = true; 6436 6437 public void setMapTrackballToArrowKeys(boolean setMap) { 6438 checkThread(); 6439 mMapTrackballToArrowKeys = setMap; 6440 } 6441 6442 void resetTrackballTime() { 6443 mTrackballLastTime = 0; 6444 } 6445 6446 @Override 6447 public boolean onTrackballEvent(MotionEvent ev) { 6448 long time = ev.getEventTime(); 6449 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6450 if (ev.getY() > 0) pageDown(true); 6451 if (ev.getY() < 0) pageUp(true); 6452 return true; 6453 } 6454 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6455 if (mSelectingText) { 6456 return true; // discard press if copy in progress 6457 } 6458 mTrackballDown = true; 6459 if (mNativeClass == 0) { 6460 return false; 6461 } 6462 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6463 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6464 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6465 nativeSelectBestAt(mLastCursorBounds); 6466 } 6467 if (DebugFlags.WEB_VIEW) { 6468 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6469 + " time=" + time 6470 + " mLastCursorTime=" + mLastCursorTime); 6471 } 6472 if (isInTouchMode()) requestFocusFromTouch(); 6473 return false; // let common code in onKeyDown at it 6474 } 6475 if (ev.getAction() == MotionEvent.ACTION_UP) { 6476 // LONG_PRESS_CENTER is set in common onKeyDown 6477 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6478 mTrackballDown = false; 6479 mTrackballUpTime = time; 6480 if (mSelectingText) { 6481 if (mExtendSelection) { 6482 copySelection(); 6483 selectionDone(); 6484 } else { 6485 mExtendSelection = true; 6486 nativeSetExtendSelection(); 6487 invalidate(); // draw the i-beam instead of the arrow 6488 } 6489 return true; // discard press if copy in progress 6490 } 6491 if (DebugFlags.WEB_VIEW) { 6492 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6493 + " time=" + time 6494 ); 6495 } 6496 return false; // let common code in onKeyUp at it 6497 } 6498 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6499 AccessibilityManager.getInstance(mContext).isEnabled()) { 6500 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6501 return false; 6502 } 6503 if (mTrackballDown) { 6504 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6505 return true; // discard move if trackball is down 6506 } 6507 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6508 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6509 return true; 6510 } 6511 // TODO: alternatively we can do panning as touch does 6512 switchOutDrawHistory(); 6513 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6514 if (DebugFlags.WEB_VIEW) { 6515 Log.v(LOGTAG, "onTrackballEvent time=" 6516 + time + " last=" + mTrackballLastTime); 6517 } 6518 mTrackballFirstTime = time; 6519 mTrackballXMove = mTrackballYMove = 0; 6520 } 6521 mTrackballLastTime = time; 6522 if (DebugFlags.WEB_VIEW) { 6523 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6524 } 6525 mTrackballRemainsX += ev.getX(); 6526 mTrackballRemainsY += ev.getY(); 6527 doTrackball(time, ev.getMetaState()); 6528 return true; 6529 } 6530 6531 void moveSelection(float xRate, float yRate) { 6532 if (mNativeClass == 0) 6533 return; 6534 int width = getViewWidth(); 6535 int height = getViewHeight(); 6536 mSelectX += xRate; 6537 mSelectY += yRate; 6538 int maxX = width + mScrollX; 6539 int maxY = height + mScrollY; 6540 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6541 , mSelectX)); 6542 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6543 , mSelectY)); 6544 if (DebugFlags.WEB_VIEW) { 6545 Log.v(LOGTAG, "moveSelection" 6546 + " mSelectX=" + mSelectX 6547 + " mSelectY=" + mSelectY 6548 + " mScrollX=" + mScrollX 6549 + " mScrollY=" + mScrollY 6550 + " xRate=" + xRate 6551 + " yRate=" + yRate 6552 ); 6553 } 6554 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6555 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6556 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6557 : 0; 6558 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6559 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6560 : 0; 6561 pinScrollBy(scrollX, scrollY, true, 0); 6562 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6563 requestRectangleOnScreen(select); 6564 invalidate(); 6565 } 6566 6567 private int scaleTrackballX(float xRate, int width) { 6568 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6569 int nextXMove = xMove; 6570 if (xMove > 0) { 6571 if (xMove > mTrackballXMove) { 6572 xMove -= mTrackballXMove; 6573 } 6574 } else if (xMove < mTrackballXMove) { 6575 xMove -= mTrackballXMove; 6576 } 6577 mTrackballXMove = nextXMove; 6578 return xMove; 6579 } 6580 6581 private int scaleTrackballY(float yRate, int height) { 6582 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6583 int nextYMove = yMove; 6584 if (yMove > 0) { 6585 if (yMove > mTrackballYMove) { 6586 yMove -= mTrackballYMove; 6587 } 6588 } else if (yMove < mTrackballYMove) { 6589 yMove -= mTrackballYMove; 6590 } 6591 mTrackballYMove = nextYMove; 6592 return yMove; 6593 } 6594 6595 private int keyCodeToSoundsEffect(int keyCode) { 6596 switch(keyCode) { 6597 case KeyEvent.KEYCODE_DPAD_UP: 6598 return SoundEffectConstants.NAVIGATION_UP; 6599 case KeyEvent.KEYCODE_DPAD_RIGHT: 6600 return SoundEffectConstants.NAVIGATION_RIGHT; 6601 case KeyEvent.KEYCODE_DPAD_DOWN: 6602 return SoundEffectConstants.NAVIGATION_DOWN; 6603 case KeyEvent.KEYCODE_DPAD_LEFT: 6604 return SoundEffectConstants.NAVIGATION_LEFT; 6605 } 6606 throw new IllegalArgumentException("keyCode must be one of " + 6607 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6608 "KEYCODE_DPAD_LEFT}."); 6609 } 6610 6611 private void doTrackball(long time, int metaState) { 6612 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6613 if (elapsed == 0) { 6614 elapsed = TRACKBALL_TIMEOUT; 6615 } 6616 float xRate = mTrackballRemainsX * 1000 / elapsed; 6617 float yRate = mTrackballRemainsY * 1000 / elapsed; 6618 int viewWidth = getViewWidth(); 6619 int viewHeight = getViewHeight(); 6620 if (mSelectingText) { 6621 if (!mDrawSelectionPointer) { 6622 // The last selection was made by touch, disabling drawing the 6623 // selection pointer. Allow the trackball to adjust the 6624 // position of the touch control. 6625 mSelectX = contentToViewX(nativeSelectionX()); 6626 mSelectY = contentToViewY(nativeSelectionY()); 6627 mDrawSelectionPointer = mExtendSelection = true; 6628 nativeSetExtendSelection(); 6629 } 6630 moveSelection(scaleTrackballX(xRate, viewWidth), 6631 scaleTrackballY(yRate, viewHeight)); 6632 mTrackballRemainsX = mTrackballRemainsY = 0; 6633 return; 6634 } 6635 float ax = Math.abs(xRate); 6636 float ay = Math.abs(yRate); 6637 float maxA = Math.max(ax, ay); 6638 if (DebugFlags.WEB_VIEW) { 6639 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6640 + " xRate=" + xRate 6641 + " yRate=" + yRate 6642 + " mTrackballRemainsX=" + mTrackballRemainsX 6643 + " mTrackballRemainsY=" + mTrackballRemainsY); 6644 } 6645 int width = mContentWidth - viewWidth; 6646 int height = mContentHeight - viewHeight; 6647 if (width < 0) width = 0; 6648 if (height < 0) height = 0; 6649 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6650 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6651 maxA = Math.max(ax, ay); 6652 int count = Math.max(0, (int) maxA); 6653 int oldScrollX = mScrollX; 6654 int oldScrollY = mScrollY; 6655 if (count > 0) { 6656 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6657 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6658 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6659 KeyEvent.KEYCODE_DPAD_RIGHT; 6660 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6661 if (DebugFlags.WEB_VIEW) { 6662 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6663 + " count=" + count 6664 + " mTrackballRemainsX=" + mTrackballRemainsX 6665 + " mTrackballRemainsY=" + mTrackballRemainsY); 6666 } 6667 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6668 for (int i = 0; i < count; i++) { 6669 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6670 } 6671 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6672 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6673 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6674 } 6675 mTrackballRemainsX = mTrackballRemainsY = 0; 6676 } 6677 if (count >= TRACKBALL_SCROLL_COUNT) { 6678 int xMove = scaleTrackballX(xRate, width); 6679 int yMove = scaleTrackballY(yRate, height); 6680 if (DebugFlags.WEB_VIEW) { 6681 Log.v(LOGTAG, "doTrackball pinScrollBy" 6682 + " count=" + count 6683 + " xMove=" + xMove + " yMove=" + yMove 6684 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6685 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6686 ); 6687 } 6688 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6689 xMove = 0; 6690 } 6691 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6692 yMove = 0; 6693 } 6694 if (xMove != 0 || yMove != 0) { 6695 pinScrollBy(xMove, yMove, true, 0); 6696 } 6697 } 6698 } 6699 6700 /** 6701 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6702 * @return Maximum horizontal scroll position within real content 6703 */ 6704 int computeMaxScrollX() { 6705 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6706 } 6707 6708 /** 6709 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6710 * @return Maximum vertical scroll position within real content 6711 */ 6712 int computeMaxScrollY() { 6713 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6714 - getViewHeightWithTitle(), 0); 6715 } 6716 6717 boolean updateScrollCoordinates(int x, int y) { 6718 int oldX = mScrollX; 6719 int oldY = mScrollY; 6720 mScrollX = x; 6721 mScrollY = y; 6722 if (oldX != mScrollX || oldY != mScrollY) { 6723 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6724 return true; 6725 } else { 6726 return false; 6727 } 6728 } 6729 6730 public void flingScroll(int vx, int vy) { 6731 checkThread(); 6732 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6733 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6734 invalidate(); 6735 } 6736 6737 private void doFling() { 6738 if (mVelocityTracker == null) { 6739 return; 6740 } 6741 int maxX = computeMaxScrollX(); 6742 int maxY = computeMaxScrollY(); 6743 6744 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6745 int vx = (int) mVelocityTracker.getXVelocity(); 6746 int vy = (int) mVelocityTracker.getYVelocity(); 6747 6748 int scrollX = mScrollX; 6749 int scrollY = mScrollY; 6750 int overscrollDistance = mOverscrollDistance; 6751 int overflingDistance = mOverflingDistance; 6752 6753 // Use the layer's scroll data if applicable. 6754 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6755 scrollX = mScrollingLayerRect.left; 6756 scrollY = mScrollingLayerRect.top; 6757 maxX = mScrollingLayerRect.right; 6758 maxY = mScrollingLayerRect.bottom; 6759 // No overscrolling for layers. 6760 overscrollDistance = overflingDistance = 0; 6761 } 6762 6763 if (mSnapScrollMode != SNAP_NONE) { 6764 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6765 vy = 0; 6766 } else { 6767 vx = 0; 6768 } 6769 } 6770 if (true /* EMG release: make our fling more like Maps' */) { 6771 // maps cuts their velocity in half 6772 vx = vx * 3 / 4; 6773 vy = vy * 3 / 4; 6774 } 6775 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6776 WebViewCore.resumePriority(); 6777 if (!mSelectingText) { 6778 WebViewCore.resumeUpdatePicture(mWebViewCore); 6779 } 6780 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6781 invalidate(); 6782 } 6783 return; 6784 } 6785 float currentVelocity = mScroller.getCurrVelocity(); 6786 float velocity = (float) Math.hypot(vx, vy); 6787 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6788 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6789 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6790 - Math.atan2(vy, vx))); 6791 final float circle = (float) (Math.PI) * 2.0f; 6792 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6793 vx += currentVelocity * mLastVelX / mLastVelocity; 6794 vy += currentVelocity * mLastVelY / mLastVelocity; 6795 velocity = (float) Math.hypot(vx, vy); 6796 if (DebugFlags.WEB_VIEW) { 6797 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6798 } 6799 } else if (DebugFlags.WEB_VIEW) { 6800 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6801 } 6802 } else if (DebugFlags.WEB_VIEW) { 6803 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6804 + " current=" + currentVelocity 6805 + " vx=" + vx + " vy=" + vy 6806 + " maxX=" + maxX + " maxY=" + maxY 6807 + " scrollX=" + scrollX + " scrollY=" + scrollY 6808 + " layer=" + mScrollingLayer); 6809 } 6810 6811 // Allow sloppy flings without overscrolling at the edges. 6812 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6813 vx = 0; 6814 } 6815 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6816 vy = 0; 6817 } 6818 6819 if (overscrollDistance < overflingDistance) { 6820 if ((vx > 0 && scrollX == -overscrollDistance) || 6821 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6822 vx = 0; 6823 } 6824 if ((vy > 0 && scrollY == -overscrollDistance) || 6825 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6826 vy = 0; 6827 } 6828 } 6829 6830 mLastVelX = vx; 6831 mLastVelY = vy; 6832 mLastVelocity = velocity; 6833 6834 // no horizontal overscroll if the content just fits 6835 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6836 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6837 // Duration is calculated based on velocity. With range boundaries and overscroll 6838 // we may not know how long the final animation will take. (Hence the deprecation 6839 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6840 // resumes during this effect we will take a performance hit. See computeScroll; 6841 // we resume webcore there when the animation is finished. 6842 final int time = mScroller.getDuration(); 6843 6844 // Suppress scrollbars for layer scrolling. 6845 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6846 awakenScrollBars(time); 6847 } 6848 6849 invalidate(); 6850 } 6851 6852 /** 6853 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6854 * in charge of installing this view to the view hierarchy. This view will 6855 * become visible when the user starts scrolling via touch and fade away if 6856 * the user does not interact with it. 6857 * <p/> 6858 * API version 3 introduces a built-in zoom mechanism that is shown 6859 * automatically by the MapView. This is the preferred approach for 6860 * showing the zoom UI. 6861 * 6862 * @deprecated The built-in zoom mechanism is preferred, see 6863 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6864 */ 6865 @Deprecated 6866 public View getZoomControls() { 6867 checkThread(); 6868 if (!getSettings().supportZoom()) { 6869 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6870 return null; 6871 } 6872 return mZoomManager.getExternalZoomPicker(); 6873 } 6874 6875 void dismissZoomControl() { 6876 mZoomManager.dismissZoomPicker(); 6877 } 6878 6879 float getDefaultZoomScale() { 6880 return mZoomManager.getDefaultScale(); 6881 } 6882 6883 /** 6884 * @return TRUE if the WebView can be zoomed in. 6885 */ 6886 public boolean canZoomIn() { 6887 checkThread(); 6888 return mZoomManager.canZoomIn(); 6889 } 6890 6891 /** 6892 * @return TRUE if the WebView can be zoomed out. 6893 */ 6894 public boolean canZoomOut() { 6895 checkThread(); 6896 return mZoomManager.canZoomOut(); 6897 } 6898 6899 /** 6900 * Perform zoom in in the webview 6901 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6902 */ 6903 public boolean zoomIn() { 6904 checkThread(); 6905 return mZoomManager.zoomIn(); 6906 } 6907 6908 /** 6909 * Perform zoom out in the webview 6910 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6911 */ 6912 public boolean zoomOut() { 6913 checkThread(); 6914 return mZoomManager.zoomOut(); 6915 } 6916 6917 private void updateSelection() { 6918 if (mNativeClass == 0) { 6919 return; 6920 } 6921 // mLastTouchX and mLastTouchY are the point in the current viewport 6922 int contentX = viewToContentX(mLastTouchX + mScrollX); 6923 int contentY = viewToContentY(mLastTouchY + mScrollY); 6924 int slop = viewToContentDimension(mNavSlop); 6925 Rect rect = new Rect(contentX - slop, contentY - slop, 6926 contentX + slop, contentY + slop); 6927 nativeSelectBestAt(rect); 6928 mInitialHitTestResult = hitTestResult(null); 6929 } 6930 6931 /** 6932 * Scroll the focused text field to match the WebTextView 6933 * @param xPercent New x position of the WebTextView from 0 to 1. 6934 */ 6935 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6936 if (!inEditingMode() || mWebViewCore == null) { 6937 return; 6938 } 6939 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6940 new Float(xPercent)); 6941 } 6942 6943 /** 6944 * Scroll the focused textarea vertically to match the WebTextView 6945 * @param y New y position of the WebTextView in view coordinates 6946 */ 6947 /* package */ void scrollFocusedTextInputY(int y) { 6948 if (!inEditingMode() || mWebViewCore == null) { 6949 return; 6950 } 6951 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6952 } 6953 6954 /** 6955 * Set our starting point and time for a drag from the WebTextView. 6956 */ 6957 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6958 if (!inEditingMode()) { 6959 return; 6960 } 6961 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6962 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6963 mLastTouchTime = eventTime; 6964 if (!mScroller.isFinished()) { 6965 abortAnimation(); 6966 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6967 } 6968 mSnapScrollMode = SNAP_NONE; 6969 mVelocityTracker = VelocityTracker.obtain(); 6970 mTouchMode = TOUCH_DRAG_START_MODE; 6971 } 6972 6973 /** 6974 * Given a motion event from the WebTextView, set its location to our 6975 * coordinates, and handle the event. 6976 */ 6977 /*package*/ boolean textFieldDrag(MotionEvent event) { 6978 if (!inEditingMode()) { 6979 return false; 6980 } 6981 mDragFromTextInput = true; 6982 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6983 (float) (mWebTextView.getTop() - mScrollY)); 6984 boolean result = onTouchEvent(event); 6985 mDragFromTextInput = false; 6986 return result; 6987 } 6988 6989 /** 6990 * Due a touch up from a WebTextView. This will be handled by webkit to 6991 * change the selection. 6992 * @param event MotionEvent in the WebTextView's coordinates. 6993 */ 6994 /*package*/ void touchUpOnTextField(MotionEvent event) { 6995 if (!inEditingMode()) { 6996 return; 6997 } 6998 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6999 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7000 int slop = viewToContentDimension(mNavSlop); 7001 nativeMotionUp(x, y, slop); 7002 } 7003 7004 /** 7005 * Called when pressing the center key or trackball on a textfield. 7006 */ 7007 /*package*/ void centerKeyPressOnTextField() { 7008 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7009 nativeCursorNodePointer()); 7010 } 7011 7012 private void doShortPress() { 7013 if (mNativeClass == 0) { 7014 return; 7015 } 7016 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7017 return; 7018 } 7019 mTouchMode = TOUCH_DONE_MODE; 7020 switchOutDrawHistory(); 7021 // mLastTouchX and mLastTouchY are the point in the current viewport 7022 int contentX = viewToContentX(mLastTouchX + mScrollX); 7023 int contentY = viewToContentY(mLastTouchY + mScrollY); 7024 int slop = viewToContentDimension(mNavSlop); 7025 if (getSettings().supportTouchOnly()) { 7026 removeTouchHighlight(false); 7027 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7028 // use "0" as generation id to inform WebKit to use the same x/y as 7029 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7030 touchUpData.mMoveGeneration = 0; 7031 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7032 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7033 WebViewCore.MotionUpData motionUpData = new WebViewCore 7034 .MotionUpData(); 7035 motionUpData.mFrame = nativeCacheHitFramePointer(); 7036 motionUpData.mNode = nativeCacheHitNodePointer(); 7037 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7038 motionUpData.mX = contentX; 7039 motionUpData.mY = contentY; 7040 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7041 motionUpData); 7042 } else { 7043 doMotionUp(contentX, contentY); 7044 } 7045 } 7046 7047 private void doMotionUp(int contentX, int contentY) { 7048 int slop = viewToContentDimension(mNavSlop); 7049 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7050 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7051 } 7052 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7053 playSoundEffect(SoundEffectConstants.CLICK); 7054 } 7055 } 7056 7057 /** 7058 * Returns plugin bounds if x/y in content coordinates corresponds to a 7059 * plugin. Otherwise a NULL rectangle is returned. 7060 */ 7061 Rect getPluginBounds(int x, int y) { 7062 int slop = viewToContentDimension(mNavSlop); 7063 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7064 return nativeCacheHitNodeBounds(); 7065 } else { 7066 return null; 7067 } 7068 } 7069 7070 /* 7071 * Return true if the rect (e.g. plugin) is fully visible and maximized 7072 * inside the WebView. 7073 */ 7074 boolean isRectFitOnScreen(Rect rect) { 7075 final int rectWidth = rect.width(); 7076 final int rectHeight = rect.height(); 7077 final int viewWidth = getViewWidth(); 7078 final int viewHeight = getViewHeightWithTitle(); 7079 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7080 scale = mZoomManager.computeScaleWithLimits(scale); 7081 return !mZoomManager.willScaleTriggerZoom(scale) 7082 && contentToViewX(rect.left) >= mScrollX 7083 && contentToViewX(rect.right) <= mScrollX + viewWidth 7084 && contentToViewY(rect.top) >= mScrollY 7085 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7086 } 7087 7088 /* 7089 * Maximize and center the rectangle, specified in the document coordinate 7090 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7091 * animated scroll to center it. If the zoom needs to be changed, find the 7092 * zoom center and do a smooth zoom transition. The rect is in document 7093 * coordinates 7094 */ 7095 void centerFitRect(Rect rect) { 7096 final int rectWidth = rect.width(); 7097 final int rectHeight = rect.height(); 7098 final int viewWidth = getViewWidth(); 7099 final int viewHeight = getViewHeightWithTitle(); 7100 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7101 / rectHeight); 7102 scale = mZoomManager.computeScaleWithLimits(scale); 7103 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7104 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7105 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7106 true, 0); 7107 } else { 7108 float actualScale = mZoomManager.getScale(); 7109 float oldScreenX = rect.left * actualScale - mScrollX; 7110 float rectViewX = rect.left * scale; 7111 float rectViewWidth = rectWidth * scale; 7112 float newMaxWidth = mContentWidth * scale; 7113 float newScreenX = (viewWidth - rectViewWidth) / 2; 7114 // pin the newX to the WebView 7115 if (newScreenX > rectViewX) { 7116 newScreenX = rectViewX; 7117 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7118 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7119 } 7120 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7121 / (scale - actualScale); 7122 float oldScreenY = rect.top * actualScale + getTitleHeight() 7123 - mScrollY; 7124 float rectViewY = rect.top * scale + getTitleHeight(); 7125 float rectViewHeight = rectHeight * scale; 7126 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7127 float newScreenY = (viewHeight - rectViewHeight) / 2; 7128 // pin the newY to the WebView 7129 if (newScreenY > rectViewY) { 7130 newScreenY = rectViewY; 7131 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7132 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7133 } 7134 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7135 / (scale - actualScale); 7136 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7137 mZoomManager.startZoomAnimation(scale, false); 7138 } 7139 } 7140 7141 // Called by JNI to handle a touch on a node representing an email address, 7142 // address, or phone number 7143 private void overrideLoading(String url) { 7144 mCallbackProxy.uiOverrideUrlLoading(url); 7145 } 7146 7147 @Override 7148 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7149 // FIXME: If a subwindow is showing find, and the user touches the 7150 // background window, it can steal focus. 7151 if (mFindIsUp) return false; 7152 boolean result = false; 7153 if (inEditingMode()) { 7154 result = mWebTextView.requestFocus(direction, 7155 previouslyFocusedRect); 7156 } else { 7157 result = super.requestFocus(direction, previouslyFocusedRect); 7158 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7159 // For cases such as GMail, where we gain focus from a direction, 7160 // we want to move to the first available link. 7161 // FIXME: If there are no visible links, we may not want to 7162 int fakeKeyDirection = 0; 7163 switch(direction) { 7164 case View.FOCUS_UP: 7165 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7166 break; 7167 case View.FOCUS_DOWN: 7168 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7169 break; 7170 case View.FOCUS_LEFT: 7171 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7172 break; 7173 case View.FOCUS_RIGHT: 7174 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7175 break; 7176 default: 7177 return result; 7178 } 7179 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7180 navHandledKey(fakeKeyDirection, 1, true, 0); 7181 } 7182 } 7183 } 7184 return result; 7185 } 7186 7187 @Override 7188 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7189 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7190 7191 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7192 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7193 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7194 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7195 7196 int measuredHeight = heightSize; 7197 int measuredWidth = widthSize; 7198 7199 // Grab the content size from WebViewCore. 7200 int contentHeight = contentToViewDimension(mContentHeight); 7201 int contentWidth = contentToViewDimension(mContentWidth); 7202 7203// Log.d(LOGTAG, "------- measure " + heightMode); 7204 7205 if (heightMode != MeasureSpec.EXACTLY) { 7206 mHeightCanMeasure = true; 7207 measuredHeight = contentHeight; 7208 if (heightMode == MeasureSpec.AT_MOST) { 7209 // If we are larger than the AT_MOST height, then our height can 7210 // no longer be measured and we should scroll internally. 7211 if (measuredHeight > heightSize) { 7212 measuredHeight = heightSize; 7213 mHeightCanMeasure = false; 7214 } else if (measuredHeight < heightSize) { 7215 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7216 } 7217 } 7218 } else { 7219 mHeightCanMeasure = false; 7220 } 7221 if (mNativeClass != 0) { 7222 nativeSetHeightCanMeasure(mHeightCanMeasure); 7223 } 7224 // For the width, always use the given size unless unspecified. 7225 if (widthMode == MeasureSpec.UNSPECIFIED) { 7226 mWidthCanMeasure = true; 7227 measuredWidth = contentWidth; 7228 } else { 7229 if (measuredWidth < contentWidth) { 7230 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7231 } 7232 mWidthCanMeasure = false; 7233 } 7234 7235 synchronized (this) { 7236 setMeasuredDimension(measuredWidth, measuredHeight); 7237 } 7238 } 7239 7240 @Override 7241 public boolean requestChildRectangleOnScreen(View child, 7242 Rect rect, 7243 boolean immediate) { 7244 if (mNativeClass == 0) { 7245 return false; 7246 } 7247 // don't scroll while in zoom animation. When it is done, we will adjust 7248 // the necessary components (e.g., WebTextView if it is in editing mode) 7249 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7250 return false; 7251 } 7252 7253 rect.offset(child.getLeft() - child.getScrollX(), 7254 child.getTop() - child.getScrollY()); 7255 7256 Rect content = new Rect(viewToContentX(mScrollX), 7257 viewToContentY(mScrollY), 7258 viewToContentX(mScrollX + getWidth() 7259 - getVerticalScrollbarWidth()), 7260 viewToContentY(mScrollY + getViewHeightWithTitle())); 7261 content = nativeSubtractLayers(content); 7262 int screenTop = contentToViewY(content.top); 7263 int screenBottom = contentToViewY(content.bottom); 7264 int height = screenBottom - screenTop; 7265 int scrollYDelta = 0; 7266 7267 if (rect.bottom > screenBottom) { 7268 int oneThirdOfScreenHeight = height / 3; 7269 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7270 // If the rectangle is too tall to fit in the bottom two thirds 7271 // of the screen, place it at the top. 7272 scrollYDelta = rect.top - screenTop; 7273 } else { 7274 // If the rectangle will still fit on screen, we want its 7275 // top to be in the top third of the screen. 7276 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7277 } 7278 } else if (rect.top < screenTop) { 7279 scrollYDelta = rect.top - screenTop; 7280 } 7281 7282 int screenLeft = contentToViewX(content.left); 7283 int screenRight = contentToViewX(content.right); 7284 int width = screenRight - screenLeft; 7285 int scrollXDelta = 0; 7286 7287 if (rect.right > screenRight && rect.left > screenLeft) { 7288 if (rect.width() > width) { 7289 scrollXDelta += (rect.left - screenLeft); 7290 } else { 7291 scrollXDelta += (rect.right - screenRight); 7292 } 7293 } else if (rect.left < screenLeft) { 7294 scrollXDelta -= (screenLeft - rect.left); 7295 } 7296 7297 if ((scrollYDelta | scrollXDelta) != 0) { 7298 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7299 } 7300 7301 return false; 7302 } 7303 7304 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7305 String replace, int newStart, int newEnd) { 7306 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7307 arg.mReplace = replace; 7308 arg.mNewStart = newStart; 7309 arg.mNewEnd = newEnd; 7310 mTextGeneration++; 7311 arg.mTextGeneration = mTextGeneration; 7312 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7313 } 7314 7315 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7316 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7317 arg.mEvent = event; 7318 arg.mCurrentText = currentText; 7319 // Increase our text generation number, and pass it to webcore thread 7320 mTextGeneration++; 7321 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7322 // WebKit's document state is not saved until about to leave the page. 7323 // To make sure the host application, like Browser, has the up to date 7324 // document state when it goes to background, we force to save the 7325 // document state. 7326 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7327 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7328 cursorData(), 1000); 7329 } 7330 7331 /** 7332 * @hide 7333 */ 7334 public synchronized WebViewCore getWebViewCore() { 7335 return mWebViewCore; 7336 } 7337 7338 /** 7339 * Used only by TouchEventQueue to store pending touch events. 7340 */ 7341 private static class QueuedTouch { 7342 long mSequence; 7343 MotionEvent mEvent; // Optional 7344 TouchEventData mTed; // Optional 7345 7346 QueuedTouch mNext; 7347 7348 public QueuedTouch set(TouchEventData ted) { 7349 mSequence = ted.mSequence; 7350 mTed = ted; 7351 mEvent = null; 7352 mNext = null; 7353 return this; 7354 } 7355 7356 public QueuedTouch set(MotionEvent ev, long sequence) { 7357 mEvent = MotionEvent.obtain(ev); 7358 mSequence = sequence; 7359 mTed = null; 7360 mNext = null; 7361 return this; 7362 } 7363 7364 public QueuedTouch add(QueuedTouch other) { 7365 if (other.mSequence < mSequence) { 7366 other.mNext = this; 7367 return other; 7368 } 7369 7370 QueuedTouch insertAt = this; 7371 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7372 insertAt = insertAt.mNext; 7373 } 7374 other.mNext = insertAt.mNext; 7375 insertAt.mNext = other; 7376 return this; 7377 } 7378 } 7379 7380 /** 7381 * WebView handles touch events asynchronously since some events must be passed to WebKit 7382 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7383 * of which path they take to ensure that no events are ever processed out of order 7384 * by WebView. 7385 */ 7386 private class TouchEventQueue { 7387 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7388 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7389 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7390 7391 // Events waiting to be processed. 7392 private QueuedTouch mTouchEventQueue; 7393 7394 // Known events that are waiting on a response before being enqueued. 7395 private QueuedTouch mPreQueue; 7396 7397 // Pool of QueuedTouch objects saved for later use. 7398 private QueuedTouch mQueuedTouchRecycleBin; 7399 private int mQueuedTouchRecycleCount; 7400 7401 private long mLastEventTime = Long.MAX_VALUE; 7402 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7403 7404 // milliseconds until we abandon hope of getting all of a previous gesture 7405 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7406 7407 private QueuedTouch obtainQueuedTouch() { 7408 if (mQueuedTouchRecycleBin != null) { 7409 QueuedTouch result = mQueuedTouchRecycleBin; 7410 mQueuedTouchRecycleBin = result.mNext; 7411 mQueuedTouchRecycleCount--; 7412 return result; 7413 } 7414 return new QueuedTouch(); 7415 } 7416 7417 /** 7418 * Allow events with any currently missing sequence numbers to be skipped in processing. 7419 */ 7420 public void ignoreCurrentlyMissingEvents() { 7421 mIgnoreUntilSequence = mNextTouchSequence; 7422 7423 // Run any events we have available and complete, pre-queued or otherwise. 7424 runQueuedAndPreQueuedEvents(); 7425 } 7426 7427 private void runQueuedAndPreQueuedEvents() { 7428 QueuedTouch qd = mPreQueue; 7429 boolean fromPreQueue = true; 7430 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7431 handleQueuedTouch(qd); 7432 QueuedTouch recycleMe = qd; 7433 if (fromPreQueue) { 7434 mPreQueue = qd.mNext; 7435 } else { 7436 mTouchEventQueue = qd.mNext; 7437 } 7438 recycleQueuedTouch(recycleMe); 7439 mLastHandledTouchSequence++; 7440 7441 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7442 long nextQueued = mTouchEventQueue != null ? 7443 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7444 fromPreQueue = nextPre < nextQueued; 7445 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7446 } 7447 } 7448 7449 /** 7450 * Add a TouchEventData to the pre-queue. 7451 * 7452 * An event in the pre-queue is an event that we know about that 7453 * has been sent to webkit, but that we haven't received back and 7454 * enqueued into the normal touch queue yet. If webkit ever times 7455 * out and we need to ignore currently missing events, we'll run 7456 * events from the pre-queue to patch the holes. 7457 * 7458 * @param ted TouchEventData to pre-queue 7459 */ 7460 public void preQueueTouchEventData(TouchEventData ted) { 7461 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7462 if (mPreQueue == null) { 7463 mPreQueue = newTouch; 7464 } else { 7465 QueuedTouch insertionPoint = mPreQueue; 7466 while (insertionPoint.mNext != null && 7467 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7468 insertionPoint = insertionPoint.mNext; 7469 } 7470 newTouch.mNext = insertionPoint.mNext; 7471 insertionPoint.mNext = newTouch; 7472 } 7473 } 7474 7475 private void recycleQueuedTouch(QueuedTouch qd) { 7476 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7477 qd.mNext = mQueuedTouchRecycleBin; 7478 mQueuedTouchRecycleBin = qd; 7479 mQueuedTouchRecycleCount++; 7480 } 7481 } 7482 7483 /** 7484 * Reset the touch event queue. This will dump any pending events 7485 * and reset the sequence numbering. 7486 */ 7487 public void reset() { 7488 mNextTouchSequence = Long.MIN_VALUE + 1; 7489 mLastHandledTouchSequence = Long.MIN_VALUE; 7490 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7491 while (mTouchEventQueue != null) { 7492 QueuedTouch recycleMe = mTouchEventQueue; 7493 mTouchEventQueue = mTouchEventQueue.mNext; 7494 recycleQueuedTouch(recycleMe); 7495 } 7496 while (mPreQueue != null) { 7497 QueuedTouch recycleMe = mPreQueue; 7498 mPreQueue = mPreQueue.mNext; 7499 recycleQueuedTouch(recycleMe); 7500 } 7501 } 7502 7503 /** 7504 * Return the next valid sequence number for tagging incoming touch events. 7505 * @return The next touch event sequence number 7506 */ 7507 public long nextTouchSequence() { 7508 return mNextTouchSequence++; 7509 } 7510 7511 /** 7512 * Enqueue a touch event in the form of TouchEventData. 7513 * The sequence number will be read from the mSequence field of the argument. 7514 * 7515 * If the touch event's sequence number is the next in line to be processed, it will 7516 * be handled before this method returns. Any subsequent events that have already 7517 * been queued will also be processed in their proper order. 7518 * 7519 * @param ted Touch data to be processed in order. 7520 * @return true if the event was processed before returning, false if it was just enqueued. 7521 */ 7522 public boolean enqueueTouchEvent(TouchEventData ted) { 7523 // Remove from the pre-queue if present 7524 QueuedTouch preQueue = mPreQueue; 7525 if (preQueue != null) { 7526 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7527 // if it was present in the pre-queue, and removed from the pre-queue itself. 7528 if (preQueue.mSequence == ted.mSequence) { 7529 mPreQueue = preQueue.mNext; 7530 } else { 7531 QueuedTouch prev = preQueue; 7532 preQueue = null; 7533 while (prev.mNext != null) { 7534 if (prev.mNext.mSequence == ted.mSequence) { 7535 preQueue = prev.mNext; 7536 prev.mNext = preQueue.mNext; 7537 break; 7538 } else { 7539 prev = prev.mNext; 7540 } 7541 } 7542 } 7543 } 7544 7545 if (ted.mSequence < mLastHandledTouchSequence) { 7546 // Stale event and we already moved on; drop it. (Should not be common.) 7547 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7548 " received from webcore; ignoring"); 7549 return false; 7550 } 7551 7552 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7553 return false; 7554 } 7555 7556 // dropStaleGestures above might have fast-forwarded us to 7557 // an event we have already. 7558 runNextQueuedEvents(); 7559 7560 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7561 if (preQueue != null) { 7562 recycleQueuedTouch(preQueue); 7563 preQueue = null; 7564 } 7565 handleQueuedTouchEventData(ted); 7566 7567 mLastHandledTouchSequence++; 7568 7569 // Do we have any more? Run them if so. 7570 runNextQueuedEvents(); 7571 } else { 7572 // Reuse the pre-queued object if we had it. 7573 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 7574 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7575 } 7576 return true; 7577 } 7578 7579 /** 7580 * Enqueue a touch event in the form of a MotionEvent from the framework. 7581 * 7582 * If the touch event's sequence number is the next in line to be processed, it will 7583 * be handled before this method returns. Any subsequent events that have already 7584 * been queued will also be processed in their proper order. 7585 * 7586 * @param ev MotionEvent to be processed in order 7587 */ 7588 public void enqueueTouchEvent(MotionEvent ev) { 7589 final long sequence = nextTouchSequence(); 7590 7591 if (dropStaleGestures(ev, sequence)) { 7592 return; 7593 } 7594 7595 // dropStaleGestures above might have fast-forwarded us to 7596 // an event we have already. 7597 runNextQueuedEvents(); 7598 7599 if (mLastHandledTouchSequence + 1 == sequence) { 7600 handleQueuedMotionEvent(ev); 7601 7602 mLastHandledTouchSequence++; 7603 7604 // Do we have any more? Run them if so. 7605 runNextQueuedEvents(); 7606 } else { 7607 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7608 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7609 } 7610 } 7611 7612 private void runNextQueuedEvents() { 7613 QueuedTouch qd = mTouchEventQueue; 7614 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7615 handleQueuedTouch(qd); 7616 QueuedTouch recycleMe = qd; 7617 qd = qd.mNext; 7618 recycleQueuedTouch(recycleMe); 7619 mLastHandledTouchSequence++; 7620 } 7621 mTouchEventQueue = qd; 7622 } 7623 7624 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7625 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7626 // This is to make sure that we don't attempt to process a tap 7627 // or long press when webkit takes too long to get back to us. 7628 // The movement will be properly confirmed when we process the 7629 // enqueued event later. 7630 final int dx = Math.round(ev.getX()) - mLastTouchX; 7631 final int dy = Math.round(ev.getY()) - mLastTouchY; 7632 if (dx * dx + dy * dy > mTouchSlopSquare) { 7633 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7634 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7635 } 7636 } 7637 7638 if (mTouchEventQueue == null) { 7639 return sequence <= mLastHandledTouchSequence; 7640 } 7641 7642 // If we have a new down event and it's been a while since the last event 7643 // we saw, catch up as best we can and keep going. 7644 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 7645 long eventTime = ev.getEventTime(); 7646 long lastHandledEventTime = mLastEventTime; 7647 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 7648 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7649 "Catching up."); 7650 runQueuedAndPreQueuedEvents(); 7651 7652 // Drop leftovers that we truly don't have. 7653 QueuedTouch qd = mTouchEventQueue; 7654 while (qd != null && qd.mSequence < sequence) { 7655 QueuedTouch recycleMe = qd; 7656 qd = qd.mNext; 7657 recycleQueuedTouch(recycleMe); 7658 } 7659 mTouchEventQueue = qd; 7660 mLastHandledTouchSequence = sequence - 1; 7661 } 7662 } 7663 7664 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 7665 QueuedTouch qd = mTouchEventQueue; 7666 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7667 QueuedTouch recycleMe = qd; 7668 qd = qd.mNext; 7669 recycleQueuedTouch(recycleMe); 7670 } 7671 mTouchEventQueue = qd; 7672 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 7673 } 7674 7675 if (mPreQueue != null) { 7676 // Drop stale prequeued events 7677 QueuedTouch qd = mPreQueue; 7678 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7679 QueuedTouch recycleMe = qd; 7680 qd = qd.mNext; 7681 recycleQueuedTouch(recycleMe); 7682 } 7683 mPreQueue = qd; 7684 } 7685 7686 return sequence <= mLastHandledTouchSequence; 7687 } 7688 7689 private void handleQueuedTouch(QueuedTouch qt) { 7690 if (qt.mTed != null) { 7691 handleQueuedTouchEventData(qt.mTed); 7692 } else { 7693 handleQueuedMotionEvent(qt.mEvent); 7694 qt.mEvent.recycle(); 7695 } 7696 } 7697 7698 private void handleQueuedMotionEvent(MotionEvent ev) { 7699 mLastEventTime = ev.getEventTime(); 7700 int action = ev.getActionMasked(); 7701 if (ev.getPointerCount() > 1) { // Multi-touch 7702 handleMultiTouchInWebView(ev); 7703 } else { 7704 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 7705 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 7706 // ScaleGestureDetector needs a consistent event stream to operate properly. 7707 // It won't take any action with fewer than two pointers, but it needs to 7708 // update internal bookkeeping state. 7709 detector.onTouchEvent(ev); 7710 } 7711 7712 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 7713 } 7714 } 7715 7716 private void handleQueuedTouchEventData(TouchEventData ted) { 7717 if (ted.mMotionEvent != null) { 7718 mLastEventTime = ted.mMotionEvent.getEventTime(); 7719 } 7720 if (!ted.mReprocess) { 7721 if (ted.mAction == MotionEvent.ACTION_DOWN 7722 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7723 // if prevent default is called from WebCore, UI 7724 // will not handle the rest of the touch events any 7725 // more. 7726 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7727 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7728 } else if (ted.mAction == MotionEvent.ACTION_MOVE 7729 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7730 // the return for the first ACTION_MOVE will decide 7731 // whether UI will handle touch or not. Currently no 7732 // support for alternating prevent default 7733 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7734 : PREVENT_DEFAULT_NO; 7735 } 7736 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7737 mTouchHighlightRegion.setEmpty(); 7738 } 7739 } else { 7740 if (ted.mPoints.length > 1) { // multi-touch 7741 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 7742 mPreventDefault = PREVENT_DEFAULT_NO; 7743 handleMultiTouchInWebView(ted.mMotionEvent); 7744 } else { 7745 mPreventDefault = PREVENT_DEFAULT_YES; 7746 } 7747 return; 7748 } 7749 7750 // prevent default is not called in WebCore, so the 7751 // message needs to be reprocessed in UI 7752 if (!ted.mNativeResult) { 7753 // Following is for single touch. 7754 switch (ted.mAction) { 7755 case MotionEvent.ACTION_DOWN: 7756 mLastDeferTouchX = ted.mPointsInView[0].x; 7757 mLastDeferTouchY = ted.mPointsInView[0].y; 7758 mDeferTouchMode = TOUCH_INIT_MODE; 7759 break; 7760 case MotionEvent.ACTION_MOVE: { 7761 // no snapping in defer process 7762 int x = ted.mPointsInView[0].x; 7763 int y = ted.mPointsInView[0].y; 7764 7765 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7766 mDeferTouchMode = TOUCH_DRAG_MODE; 7767 mLastDeferTouchX = x; 7768 mLastDeferTouchY = y; 7769 startScrollingLayer(x, y); 7770 startDrag(); 7771 } 7772 int deltaX = pinLocX((int) (mScrollX 7773 + mLastDeferTouchX - x)) 7774 - mScrollX; 7775 int deltaY = pinLocY((int) (mScrollY 7776 + mLastDeferTouchY - y)) 7777 - mScrollY; 7778 doDrag(deltaX, deltaY); 7779 if (deltaX != 0) mLastDeferTouchX = x; 7780 if (deltaY != 0) mLastDeferTouchY = y; 7781 break; 7782 } 7783 case MotionEvent.ACTION_UP: 7784 case MotionEvent.ACTION_CANCEL: 7785 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7786 // no fling in defer process 7787 mScroller.springBack(mScrollX, mScrollY, 0, 7788 computeMaxScrollX(), 0, 7789 computeMaxScrollY()); 7790 invalidate(); 7791 WebViewCore.resumePriority(); 7792 WebViewCore.resumeUpdatePicture(mWebViewCore); 7793 } 7794 mDeferTouchMode = TOUCH_DONE_MODE; 7795 break; 7796 case WebViewCore.ACTION_DOUBLETAP: 7797 // doDoubleTap() needs mLastTouchX/Y as anchor 7798 mLastDeferTouchX = ted.mPointsInView[0].x; 7799 mLastDeferTouchY = ted.mPointsInView[0].y; 7800 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7801 mDeferTouchMode = TOUCH_DONE_MODE; 7802 break; 7803 case WebViewCore.ACTION_LONGPRESS: 7804 HitTestResult hitTest = getHitTestResult(); 7805 if (hitTest != null && hitTest.mType 7806 != HitTestResult.UNKNOWN_TYPE) { 7807 performLongClick(); 7808 } 7809 mDeferTouchMode = TOUCH_DONE_MODE; 7810 break; 7811 } 7812 } 7813 } 7814 } 7815 } 7816 7817 //------------------------------------------------------------------------- 7818 // Methods can be called from a separate thread, like WebViewCore 7819 // If it needs to call the View system, it has to send message. 7820 //------------------------------------------------------------------------- 7821 7822 /** 7823 * General handler to receive message coming from webkit thread 7824 */ 7825 class PrivateHandler extends Handler { 7826 @Override 7827 public void handleMessage(Message msg) { 7828 // exclude INVAL_RECT_MSG_ID since it is frequently output 7829 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7830 if (msg.what >= FIRST_PRIVATE_MSG_ID 7831 && msg.what <= LAST_PRIVATE_MSG_ID) { 7832 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7833 - FIRST_PRIVATE_MSG_ID]); 7834 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7835 && msg.what <= LAST_PACKAGE_MSG_ID) { 7836 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7837 - FIRST_PACKAGE_MSG_ID]); 7838 } else { 7839 Log.v(LOGTAG, Integer.toString(msg.what)); 7840 } 7841 } 7842 if (mWebViewCore == null) { 7843 // after WebView's destroy() is called, skip handling messages. 7844 return; 7845 } 7846 switch (msg.what) { 7847 case REMEMBER_PASSWORD: { 7848 mDatabase.setUsernamePassword( 7849 msg.getData().getString("host"), 7850 msg.getData().getString("username"), 7851 msg.getData().getString("password")); 7852 ((Message) msg.obj).sendToTarget(); 7853 break; 7854 } 7855 case NEVER_REMEMBER_PASSWORD: { 7856 mDatabase.setUsernamePassword( 7857 msg.getData().getString("host"), null, null); 7858 ((Message) msg.obj).sendToTarget(); 7859 break; 7860 } 7861 case PREVENT_DEFAULT_TIMEOUT: { 7862 // if timeout happens, cancel it so that it won't block UI 7863 // to continue handling touch events 7864 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7865 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7866 || (msg.arg1 == MotionEvent.ACTION_MOVE 7867 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7868 cancelWebCoreTouchEvent( 7869 viewToContentX(mLastTouchX + mScrollX), 7870 viewToContentY(mLastTouchY + mScrollY), 7871 true); 7872 } 7873 break; 7874 } 7875 case SCROLL_SELECT_TEXT: { 7876 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7877 mSentAutoScrollMessage = false; 7878 break; 7879 } 7880 if (mScrollingLayer == 0) { 7881 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7882 } else { 7883 mScrollingLayerRect.left += mAutoScrollX; 7884 mScrollingLayerRect.top += mAutoScrollY; 7885 nativeScrollLayer(mScrollingLayer, 7886 mScrollingLayerRect.left, 7887 mScrollingLayerRect.top); 7888 invalidate(); 7889 } 7890 sendEmptyMessageDelayed( 7891 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7892 break; 7893 } 7894 case SWITCH_TO_SHORTPRESS: { 7895 mInitialHitTestResult = null; // set by updateSelection() 7896 if (mTouchMode == TOUCH_INIT_MODE) { 7897 if (!getSettings().supportTouchOnly() 7898 && mPreventDefault != PREVENT_DEFAULT_YES) { 7899 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7900 updateSelection(); 7901 } else { 7902 // set to TOUCH_SHORTPRESS_MODE so that it won't 7903 // trigger double tap any more 7904 mTouchMode = TOUCH_SHORTPRESS_MODE; 7905 } 7906 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7907 mTouchMode = TOUCH_DONE_MODE; 7908 } 7909 break; 7910 } 7911 case SWITCH_TO_LONGPRESS: { 7912 if (getSettings().supportTouchOnly()) { 7913 removeTouchHighlight(false); 7914 } 7915 if (inFullScreenMode() || mDeferTouchProcess) { 7916 TouchEventData ted = new TouchEventData(); 7917 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7918 ted.mIds = new int[1]; 7919 ted.mIds[0] = 0; 7920 ted.mPoints = new Point[1]; 7921 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7922 viewToContentY(mLastTouchY + mScrollY)); 7923 ted.mPointsInView = new Point[1]; 7924 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 7925 // metaState for long press is tricky. Should it be the 7926 // state when the press started or when the press was 7927 // released? Or some intermediary key state? For 7928 // simplicity for now, we don't set it. 7929 ted.mMetaState = 0; 7930 ted.mReprocess = mDeferTouchProcess; 7931 ted.mNativeLayer = nativeScrollableLayer( 7932 ted.mPoints[0].x, ted.mPoints[0].y, 7933 ted.mNativeLayerRect, null); 7934 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7935 mTouchEventQueue.preQueueTouchEventData(ted); 7936 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7937 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7938 mTouchMode = TOUCH_DONE_MODE; 7939 performLongClick(); 7940 } 7941 break; 7942 } 7943 case RELEASE_SINGLE_TAP: { 7944 doShortPress(); 7945 break; 7946 } 7947 case SCROLL_TO_MSG_ID: { 7948 // arg1 = animate, arg2 = onlyIfImeIsShowing 7949 // obj = Point(x, y) 7950 if (msg.arg2 == 1) { 7951 // This scroll is intended to bring the textfield into 7952 // view, but is only necessary if the IME is showing 7953 InputMethodManager imm = InputMethodManager.peekInstance(); 7954 if (imm == null || !imm.isAcceptingText() 7955 || (!imm.isActive(WebView.this) && (!inEditingMode() 7956 || !imm.isActive(mWebTextView)))) { 7957 break; 7958 } 7959 } 7960 final Point p = (Point) msg.obj; 7961 if (msg.arg1 == 1) { 7962 spawnContentScrollTo(p.x, p.y); 7963 } else { 7964 setContentScrollTo(p.x, p.y); 7965 } 7966 break; 7967 } 7968 case UPDATE_ZOOM_RANGE: { 7969 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7970 // mScrollX contains the new minPrefWidth 7971 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7972 break; 7973 } 7974 case REPLACE_BASE_CONTENT: { 7975 nativeReplaceBaseContent(msg.arg1); 7976 break; 7977 } 7978 case NEW_PICTURE_MSG_ID: { 7979 // called for new content 7980 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7981 WebViewCore.ViewState viewState = draw.mViewState; 7982 boolean isPictureAfterFirstLayout = viewState != null; 7983 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 7984 getSettings().getShowVisualIndicator(), 7985 isPictureAfterFirstLayout); 7986 final Point viewSize = draw.mViewSize; 7987 if (isPictureAfterFirstLayout) { 7988 // Reset the last sent data here since dealing with new page. 7989 mLastWidthSent = 0; 7990 mZoomManager.onFirstLayout(draw); 7991 if (!mDrawHistory) { 7992 // Do not send the scroll event for this particular 7993 // scroll message. Note that a scroll event may 7994 // still be fired if the user scrolls before the 7995 // message can be handled. 7996 mSendScrollEvent = false; 7997 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7998 mSendScrollEvent = true; 7999 8000 // As we are on a new page, remove the WebTextView. This 8001 // is necessary for page loads driven by webkit, and in 8002 // particular when the user was on a password field, so 8003 // the WebTextView was visible. 8004 clearTextEntry(); 8005 } 8006 } 8007 8008 // We update the layout (i.e. request a layout from the 8009 // view system) if the last view size that we sent to 8010 // WebCore matches the view size of the picture we just 8011 // received in the fixed dimension. 8012 final boolean updateLayout = viewSize.x == mLastWidthSent 8013 && viewSize.y == mLastHeightSent; 8014 // Don't send scroll event for picture coming from webkit, 8015 // since the new picture may cause a scroll event to override 8016 // the saved history scroll position. 8017 mSendScrollEvent = false; 8018 recordNewContentSize(draw.mContentSize.x, 8019 draw.mContentSize.y, updateLayout); 8020 mSendScrollEvent = true; 8021 if (DebugFlags.WEB_VIEW) { 8022 Rect b = draw.mInvalRegion.getBounds(); 8023 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8024 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8025 } 8026 invalidateContentRect(draw.mInvalRegion.getBounds()); 8027 8028 if (mPictureListener != null) { 8029 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8030 } 8031 8032 // update the zoom information based on the new picture 8033 mZoomManager.onNewPicture(draw); 8034 8035 if (draw.mFocusSizeChanged && inEditingMode()) { 8036 mFocusSizeChanged = true; 8037 } 8038 if (isPictureAfterFirstLayout) { 8039 mViewManager.postReadyToDrawAll(); 8040 } 8041 break; 8042 } 8043 case WEBCORE_INITIALIZED_MSG_ID: 8044 // nativeCreate sets mNativeClass to a non-zero value 8045 String drawableDir = BrowserFrame.getRawResFilename( 8046 BrowserFrame.DRAWABLEDIR, mContext); 8047 AssetManager am = mContext.getAssets(); 8048 nativeCreate(msg.arg1, drawableDir, am); 8049 break; 8050 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8051 // Make sure that the textfield is currently focused 8052 // and representing the same node as the pointer. 8053 if (inEditingMode() && 8054 mWebTextView.isSameTextField(msg.arg1)) { 8055 if (msg.getData().getBoolean("password")) { 8056 Spannable text = (Spannable) mWebTextView.getText(); 8057 int start = Selection.getSelectionStart(text); 8058 int end = Selection.getSelectionEnd(text); 8059 mWebTextView.setInPassword(true); 8060 // Restore the selection, which may have been 8061 // ruined by setInPassword. 8062 Spannable pword = 8063 (Spannable) mWebTextView.getText(); 8064 Selection.setSelection(pword, start, end); 8065 // If the text entry has created more events, ignore 8066 // this one. 8067 } else if (msg.arg2 == mTextGeneration) { 8068 String text = (String) msg.obj; 8069 if (null == text) { 8070 text = ""; 8071 } 8072 mWebTextView.setTextAndKeepSelection(text); 8073 } 8074 } 8075 break; 8076 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8077 displaySoftKeyboard(true); 8078 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8079 case UPDATE_TEXT_SELECTION_MSG_ID: 8080 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8081 (WebViewCore.TextSelectionData) msg.obj); 8082 break; 8083 case FORM_DID_BLUR: 8084 if (inEditingMode() 8085 && mWebTextView.isSameTextField(msg.arg1)) { 8086 hideSoftKeyboard(); 8087 } 8088 break; 8089 case RETURN_LABEL: 8090 if (inEditingMode() 8091 && mWebTextView.isSameTextField(msg.arg1)) { 8092 mWebTextView.setHint((String) msg.obj); 8093 InputMethodManager imm 8094 = InputMethodManager.peekInstance(); 8095 // The hint is propagated to the IME in 8096 // onCreateInputConnection. If the IME is already 8097 // active, restart it so that its hint text is updated. 8098 if (imm != null && imm.isActive(mWebTextView)) { 8099 imm.restartInput(mWebTextView); 8100 } 8101 } 8102 break; 8103 case UNHANDLED_NAV_KEY: 8104 navHandledKey(msg.arg1, 1, false, 0); 8105 break; 8106 case UPDATE_TEXT_ENTRY_MSG_ID: 8107 // this is sent after finishing resize in WebViewCore. Make 8108 // sure the text edit box is still on the screen. 8109 if (inEditingMode() && nativeCursorIsTextInput()) { 8110 rebuildWebTextView(); 8111 } 8112 break; 8113 case CLEAR_TEXT_ENTRY: 8114 clearTextEntry(); 8115 break; 8116 case INVAL_RECT_MSG_ID: { 8117 Rect r = (Rect)msg.obj; 8118 if (r == null) { 8119 invalidate(); 8120 } else { 8121 // we need to scale r from content into view coords, 8122 // which viewInvalidate() does for us 8123 viewInvalidate(r.left, r.top, r.right, r.bottom); 8124 } 8125 break; 8126 } 8127 case REQUEST_FORM_DATA: 8128 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8129 if (mWebTextView.isSameTextField(msg.arg1)) { 8130 mWebTextView.setAdapterCustom(adapter); 8131 } 8132 break; 8133 case RESUME_WEBCORE_PRIORITY: 8134 WebViewCore.resumePriority(); 8135 WebViewCore.resumeUpdatePicture(mWebViewCore); 8136 break; 8137 8138 case LONG_PRESS_CENTER: 8139 // as this is shared by keydown and trackballdown, reset all 8140 // the states 8141 mGotCenterDown = false; 8142 mTrackballDown = false; 8143 performLongClick(); 8144 break; 8145 8146 case WEBCORE_NEED_TOUCH_EVENTS: 8147 mForwardTouchEvents = (msg.arg1 != 0); 8148 break; 8149 8150 case PREVENT_TOUCH_ID: 8151 if (inFullScreenMode()) { 8152 break; 8153 } 8154 TouchEventData ted = (TouchEventData) msg.obj; 8155 8156 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8157 // WebCore is responding to us; remove pending timeout. 8158 // It will be re-posted when needed. 8159 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8160 } 8161 break; 8162 8163 case REQUEST_KEYBOARD: 8164 if (msg.arg1 == 0) { 8165 hideSoftKeyboard(); 8166 } else { 8167 displaySoftKeyboard(false); 8168 } 8169 break; 8170 8171 case FIND_AGAIN: 8172 // Ignore if find has been dismissed. 8173 if (mFindIsUp && mFindCallback != null) { 8174 mFindCallback.findAll(); 8175 } 8176 break; 8177 8178 case DRAG_HELD_MOTIONLESS: 8179 mHeldMotionless = MOTIONLESS_TRUE; 8180 invalidate(); 8181 // fall through to keep scrollbars awake 8182 8183 case AWAKEN_SCROLL_BARS: 8184 if (mTouchMode == TOUCH_DRAG_MODE 8185 && mHeldMotionless == MOTIONLESS_TRUE) { 8186 awakenScrollBars(ViewConfiguration 8187 .getScrollDefaultDelay(), false); 8188 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8189 .obtainMessage(AWAKEN_SCROLL_BARS), 8190 ViewConfiguration.getScrollDefaultDelay()); 8191 } 8192 break; 8193 8194 case DO_MOTION_UP: 8195 doMotionUp(msg.arg1, msg.arg2); 8196 break; 8197 8198 case SCREEN_ON: 8199 setKeepScreenOn(msg.arg1 == 1); 8200 break; 8201 8202 case ENTER_FULLSCREEN_VIDEO: 8203 int layerId = msg.arg1; 8204 8205 String url = (String) msg.obj; 8206 if (mHTML5VideoViewProxy != null) { 8207 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8208 } 8209 break; 8210 8211 case SHOW_FULLSCREEN: { 8212 View view = (View) msg.obj; 8213 int npp = msg.arg1; 8214 8215 if (inFullScreenMode()) { 8216 Log.w(LOGTAG, "Should not have another full screen."); 8217 dismissFullScreenMode(); 8218 } 8219 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 8220 mFullScreenHolder.setContentView(view); 8221 mFullScreenHolder.setCancelable(false); 8222 mFullScreenHolder.setCanceledOnTouchOutside(false); 8223 mFullScreenHolder.show(); 8224 8225 break; 8226 } 8227 case HIDE_FULLSCREEN: 8228 dismissFullScreenMode(); 8229 break; 8230 8231 case DOM_FOCUS_CHANGED: 8232 if (inEditingMode()) { 8233 nativeClearCursor(); 8234 rebuildWebTextView(); 8235 } 8236 break; 8237 8238 case SHOW_RECT_MSG_ID: { 8239 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8240 int x = mScrollX; 8241 int left = contentToViewX(data.mLeft); 8242 int width = contentToViewDimension(data.mWidth); 8243 int maxWidth = contentToViewDimension(data.mContentWidth); 8244 int viewWidth = getViewWidth(); 8245 if (width < viewWidth) { 8246 // center align 8247 x += left + width / 2 - mScrollX - viewWidth / 2; 8248 } else { 8249 x += (int) (left + data.mXPercentInDoc * width 8250 - mScrollX - data.mXPercentInView * viewWidth); 8251 } 8252 if (DebugFlags.WEB_VIEW) { 8253 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8254 width + ",maxWidth=" + maxWidth + 8255 ",viewWidth=" + viewWidth + ",x=" 8256 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8257 ",xPercentInView=" + data.mXPercentInView+ ")"); 8258 } 8259 // use the passing content width to cap x as the current 8260 // mContentWidth may not be updated yet 8261 x = Math.max(0, 8262 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8263 int top = contentToViewY(data.mTop); 8264 int height = contentToViewDimension(data.mHeight); 8265 int maxHeight = contentToViewDimension(data.mContentHeight); 8266 int viewHeight = getViewHeight(); 8267 int y = (int) (top + data.mYPercentInDoc * height - 8268 data.mYPercentInView * viewHeight); 8269 if (DebugFlags.WEB_VIEW) { 8270 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8271 height + ",maxHeight=" + maxHeight + 8272 ",viewHeight=" + viewHeight + ",y=" 8273 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8274 ",yPercentInView=" + data.mYPercentInView+ ")"); 8275 } 8276 // use the passing content height to cap y as the current 8277 // mContentHeight may not be updated yet 8278 y = Math.max(0, 8279 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8280 // We need to take into account the visible title height 8281 // when scrolling since y is an absolute view position. 8282 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8283 scrollTo(x, y); 8284 } 8285 break; 8286 8287 case CENTER_FIT_RECT: 8288 centerFitRect((Rect)msg.obj); 8289 break; 8290 8291 case SET_SCROLLBAR_MODES: 8292 mHorizontalScrollBarMode = msg.arg1; 8293 mVerticalScrollBarMode = msg.arg2; 8294 break; 8295 8296 case SELECTION_STRING_CHANGED: 8297 if (mAccessibilityInjector != null) { 8298 String selectionString = (String) msg.obj; 8299 mAccessibilityInjector.onSelectionStringChange(selectionString); 8300 } 8301 break; 8302 8303 case SET_TOUCH_HIGHLIGHT_RECTS: 8304 invalidate(mTouchHighlightRegion.getBounds()); 8305 mTouchHighlightRegion.setEmpty(); 8306 if (msg.obj != null) { 8307 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8308 for (Rect rect : rects) { 8309 Rect viewRect = contentToViewRect(rect); 8310 // some sites, like stories in nytimes.com, set 8311 // mouse event handler in the top div. It is not 8312 // user friendly to highlight the div if it covers 8313 // more than half of the screen. 8314 if (viewRect.width() < getWidth() >> 1 8315 || viewRect.height() < getHeight() >> 1) { 8316 mTouchHighlightRegion.union(viewRect); 8317 invalidate(viewRect); 8318 } else { 8319 Log.w(LOGTAG, "Skip the huge selection rect:" 8320 + viewRect); 8321 } 8322 } 8323 } 8324 break; 8325 8326 case SAVE_WEBARCHIVE_FINISHED: 8327 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8328 if (saveMessage.mCallback != null) { 8329 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8330 } 8331 break; 8332 8333 case SET_AUTOFILLABLE: 8334 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8335 if (mWebTextView != null) { 8336 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8337 rebuildWebTextView(); 8338 } 8339 break; 8340 8341 case AUTOFILL_COMPLETE: 8342 if (mWebTextView != null) { 8343 // Clear the WebTextView adapter when AutoFill finishes 8344 // so that the drop down gets cleared. 8345 mWebTextView.setAdapterCustom(null); 8346 } 8347 break; 8348 8349 case SELECT_AT: 8350 nativeSelectAt(msg.arg1, msg.arg2); 8351 break; 8352 8353 default: 8354 super.handleMessage(msg); 8355 break; 8356 } 8357 } 8358 } 8359 8360 /** 8361 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8362 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8363 */ 8364 private void updateTextSelectionFromMessage(int nodePointer, 8365 int textGeneration, WebViewCore.TextSelectionData data) { 8366 if (inEditingMode() 8367 && mWebTextView.isSameTextField(nodePointer) 8368 && textGeneration == mTextGeneration) { 8369 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8370 } 8371 } 8372 8373 // Class used to use a dropdown for a <select> element 8374 private class InvokeListBox implements Runnable { 8375 // Whether the listbox allows multiple selection. 8376 private boolean mMultiple; 8377 // Passed in to a list with multiple selection to tell 8378 // which items are selected. 8379 private int[] mSelectedArray; 8380 // Passed in to a list with single selection to tell 8381 // where the initial selection is. 8382 private int mSelection; 8383 8384 private Container[] mContainers; 8385 8386 // Need these to provide stable ids to my ArrayAdapter, 8387 // which normally does not have stable ids. (Bug 1250098) 8388 private class Container extends Object { 8389 /** 8390 * Possible values for mEnabled. Keep in sync with OptionStatus in 8391 * WebViewCore.cpp 8392 */ 8393 final static int OPTGROUP = -1; 8394 final static int OPTION_DISABLED = 0; 8395 final static int OPTION_ENABLED = 1; 8396 8397 String mString; 8398 int mEnabled; 8399 int mId; 8400 8401 @Override 8402 public String toString() { 8403 return mString; 8404 } 8405 } 8406 8407 /** 8408 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8409 * and allow filtering. 8410 */ 8411 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8412 public MyArrayListAdapter() { 8413 super(mContext, 8414 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8415 com.android.internal.R.layout.webview_select_singlechoice, 8416 mContainers); 8417 } 8418 8419 @Override 8420 public View getView(int position, View convertView, 8421 ViewGroup parent) { 8422 // Always pass in null so that we will get a new CheckedTextView 8423 // Otherwise, an item which was previously used as an <optgroup> 8424 // element (i.e. has no check), could get used as an <option> 8425 // element, which needs a checkbox/radio, but it would not have 8426 // one. 8427 convertView = super.getView(position, null, parent); 8428 Container c = item(position); 8429 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8430 // ListView does not draw dividers between disabled and 8431 // enabled elements. Use a LinearLayout to provide dividers 8432 LinearLayout layout = new LinearLayout(mContext); 8433 layout.setOrientation(LinearLayout.VERTICAL); 8434 if (position > 0) { 8435 View dividerTop = new View(mContext); 8436 dividerTop.setBackgroundResource( 8437 android.R.drawable.divider_horizontal_bright); 8438 layout.addView(dividerTop); 8439 } 8440 8441 if (Container.OPTGROUP == c.mEnabled) { 8442 // Currently select_dialog_multichoice uses CheckedTextViews. 8443 // If that changes, the class cast will no longer be valid. 8444 if (mMultiple) { 8445 Assert.assertTrue(convertView instanceof CheckedTextView); 8446 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8447 } 8448 } else { 8449 // c.mEnabled == Container.OPTION_DISABLED 8450 // Draw the disabled element in a disabled state. 8451 convertView.setEnabled(false); 8452 } 8453 8454 layout.addView(convertView); 8455 if (position < getCount() - 1) { 8456 View dividerBottom = new View(mContext); 8457 dividerBottom.setBackgroundResource( 8458 android.R.drawable.divider_horizontal_bright); 8459 layout.addView(dividerBottom); 8460 } 8461 return layout; 8462 } 8463 return convertView; 8464 } 8465 8466 @Override 8467 public boolean hasStableIds() { 8468 // AdapterView's onChanged method uses this to determine whether 8469 // to restore the old state. Return false so that the old (out 8470 // of date) state does not replace the new, valid state. 8471 return false; 8472 } 8473 8474 private Container item(int position) { 8475 if (position < 0 || position >= getCount()) { 8476 return null; 8477 } 8478 return (Container) getItem(position); 8479 } 8480 8481 @Override 8482 public long getItemId(int position) { 8483 Container item = item(position); 8484 if (item == null) { 8485 return -1; 8486 } 8487 return item.mId; 8488 } 8489 8490 @Override 8491 public boolean areAllItemsEnabled() { 8492 return false; 8493 } 8494 8495 @Override 8496 public boolean isEnabled(int position) { 8497 Container item = item(position); 8498 if (item == null) { 8499 return false; 8500 } 8501 return Container.OPTION_ENABLED == item.mEnabled; 8502 } 8503 } 8504 8505 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8506 mMultiple = true; 8507 mSelectedArray = selected; 8508 8509 int length = array.length; 8510 mContainers = new Container[length]; 8511 for (int i = 0; i < length; i++) { 8512 mContainers[i] = new Container(); 8513 mContainers[i].mString = array[i]; 8514 mContainers[i].mEnabled = enabled[i]; 8515 mContainers[i].mId = i; 8516 } 8517 } 8518 8519 private InvokeListBox(String[] array, int[] enabled, int selection) { 8520 mSelection = selection; 8521 mMultiple = false; 8522 8523 int length = array.length; 8524 mContainers = new Container[length]; 8525 for (int i = 0; i < length; i++) { 8526 mContainers[i] = new Container(); 8527 mContainers[i].mString = array[i]; 8528 mContainers[i].mEnabled = enabled[i]; 8529 mContainers[i].mId = i; 8530 } 8531 } 8532 8533 /* 8534 * Whenever the data set changes due to filtering, this class ensures 8535 * that the checked item remains checked. 8536 */ 8537 private class SingleDataSetObserver extends DataSetObserver { 8538 private long mCheckedId; 8539 private ListView mListView; 8540 private Adapter mAdapter; 8541 8542 /* 8543 * Create a new observer. 8544 * @param id The ID of the item to keep checked. 8545 * @param l ListView for getting and clearing the checked states 8546 * @param a Adapter for getting the IDs 8547 */ 8548 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8549 mCheckedId = id; 8550 mListView = l; 8551 mAdapter = a; 8552 } 8553 8554 @Override 8555 public void onChanged() { 8556 // The filter may have changed which item is checked. Find the 8557 // item that the ListView thinks is checked. 8558 int position = mListView.getCheckedItemPosition(); 8559 long id = mAdapter.getItemId(position); 8560 if (mCheckedId != id) { 8561 // Clear the ListView's idea of the checked item, since 8562 // it is incorrect 8563 mListView.clearChoices(); 8564 // Search for mCheckedId. If it is in the filtered list, 8565 // mark it as checked 8566 int count = mAdapter.getCount(); 8567 for (int i = 0; i < count; i++) { 8568 if (mAdapter.getItemId(i) == mCheckedId) { 8569 mListView.setItemChecked(i, true); 8570 break; 8571 } 8572 } 8573 } 8574 } 8575 } 8576 8577 public void run() { 8578 final ListView listView = (ListView) LayoutInflater.from(mContext) 8579 .inflate(com.android.internal.R.layout.select_dialog, null); 8580 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8581 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8582 .setView(listView).setCancelable(true) 8583 .setInverseBackgroundForced(true); 8584 8585 if (mMultiple) { 8586 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8587 public void onClick(DialogInterface dialog, int which) { 8588 mWebViewCore.sendMessage( 8589 EventHub.LISTBOX_CHOICES, 8590 adapter.getCount(), 0, 8591 listView.getCheckedItemPositions()); 8592 }}); 8593 b.setNegativeButton(android.R.string.cancel, 8594 new DialogInterface.OnClickListener() { 8595 public void onClick(DialogInterface dialog, int which) { 8596 mWebViewCore.sendMessage( 8597 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8598 }}); 8599 } 8600 mListBoxDialog = b.create(); 8601 listView.setAdapter(adapter); 8602 listView.setFocusableInTouchMode(true); 8603 // There is a bug (1250103) where the checks in a ListView with 8604 // multiple items selected are associated with the positions, not 8605 // the ids, so the items do not properly retain their checks when 8606 // filtered. Do not allow filtering on multiple lists until 8607 // that bug is fixed. 8608 8609 listView.setTextFilterEnabled(!mMultiple); 8610 if (mMultiple) { 8611 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8612 int length = mSelectedArray.length; 8613 for (int i = 0; i < length; i++) { 8614 listView.setItemChecked(mSelectedArray[i], true); 8615 } 8616 } else { 8617 listView.setOnItemClickListener(new OnItemClickListener() { 8618 public void onItemClick(AdapterView<?> parent, View v, 8619 int position, long id) { 8620 // Rather than sending the message right away, send it 8621 // after the page regains focus. 8622 mListBoxMessage = Message.obtain(null, 8623 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8624 mListBoxDialog.dismiss(); 8625 mListBoxDialog = null; 8626 } 8627 }); 8628 if (mSelection != -1) { 8629 listView.setSelection(mSelection); 8630 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8631 listView.setItemChecked(mSelection, true); 8632 DataSetObserver observer = new SingleDataSetObserver( 8633 adapter.getItemId(mSelection), listView, adapter); 8634 adapter.registerDataSetObserver(observer); 8635 } 8636 } 8637 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8638 public void onCancel(DialogInterface dialog) { 8639 mWebViewCore.sendMessage( 8640 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8641 mListBoxDialog = null; 8642 } 8643 }); 8644 mListBoxDialog.show(); 8645 } 8646 } 8647 8648 private Message mListBoxMessage; 8649 8650 /* 8651 * Request a dropdown menu for a listbox with multiple selection. 8652 * 8653 * @param array Labels for the listbox. 8654 * @param enabledArray State for each element in the list. See static 8655 * integers in Container class. 8656 * @param selectedArray Which positions are initally selected. 8657 */ 8658 void requestListBox(String[] array, int[] enabledArray, int[] 8659 selectedArray) { 8660 mPrivateHandler.post( 8661 new InvokeListBox(array, enabledArray, selectedArray)); 8662 } 8663 8664 /* 8665 * Request a dropdown menu for a listbox with single selection or a single 8666 * <select> element. 8667 * 8668 * @param array Labels for the listbox. 8669 * @param enabledArray State for each element in the list. See static 8670 * integers in Container class. 8671 * @param selection Which position is initally selected. 8672 */ 8673 void requestListBox(String[] array, int[] enabledArray, int selection) { 8674 mPrivateHandler.post( 8675 new InvokeListBox(array, enabledArray, selection)); 8676 } 8677 8678 // called by JNI 8679 private void sendMoveFocus(int frame, int node) { 8680 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8681 new WebViewCore.CursorData(frame, node, 0, 0)); 8682 } 8683 8684 // called by JNI 8685 private void sendMoveMouse(int frame, int node, int x, int y) { 8686 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8687 new WebViewCore.CursorData(frame, node, x, y)); 8688 } 8689 8690 /* 8691 * Send a mouse move event to the webcore thread. 8692 * 8693 * @param removeFocus Pass true to remove the WebTextView, if present. 8694 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8695 * called by JNI 8696 */ 8697 @SuppressWarnings("unused") 8698 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8699 if (removeFocus) { 8700 clearTextEntry(); 8701 } 8702 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8703 stopPaintingCaret ? 1 : 0, 0, 8704 cursorData()); 8705 } 8706 8707 /** 8708 * Called by JNI to send a message to the webcore thread that the user 8709 * touched the webpage. 8710 * @param touchGeneration Generation number of the touch, to ignore touches 8711 * after a new one has been generated. 8712 * @param frame Pointer to the frame holding the node that was touched. 8713 * @param node Pointer to the node touched. 8714 * @param x x-position of the touch. 8715 * @param y y-position of the touch. 8716 */ 8717 private void sendMotionUp(int touchGeneration, 8718 int frame, int node, int x, int y) { 8719 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8720 touchUpData.mMoveGeneration = touchGeneration; 8721 touchUpData.mFrame = frame; 8722 touchUpData.mNode = node; 8723 touchUpData.mX = x; 8724 touchUpData.mY = y; 8725 touchUpData.mNativeLayer = nativeScrollableLayer( 8726 x, y, touchUpData.mNativeLayerRect, null); 8727 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8728 } 8729 8730 8731 private int getScaledMaxXScroll() { 8732 int width; 8733 if (mHeightCanMeasure == false) { 8734 width = getViewWidth() / 4; 8735 } else { 8736 Rect visRect = new Rect(); 8737 calcOurVisibleRect(visRect); 8738 width = visRect.width() / 2; 8739 } 8740 // FIXME the divisor should be retrieved from somewhere 8741 return viewToContentX(width); 8742 } 8743 8744 private int getScaledMaxYScroll() { 8745 int height; 8746 if (mHeightCanMeasure == false) { 8747 height = getViewHeight() / 4; 8748 } else { 8749 Rect visRect = new Rect(); 8750 calcOurVisibleRect(visRect); 8751 height = visRect.height() / 2; 8752 } 8753 // FIXME the divisor should be retrieved from somewhere 8754 // the closest thing today is hard-coded into ScrollView.java 8755 // (from ScrollView.java, line 363) int maxJump = height/2; 8756 return Math.round(height * mZoomManager.getInvScale()); 8757 } 8758 8759 /** 8760 * Called by JNI to invalidate view 8761 */ 8762 private void viewInvalidate() { 8763 invalidate(); 8764 } 8765 8766 /** 8767 * Pass the key directly to the page. This assumes that 8768 * nativePageShouldHandleShiftAndArrows() returned true. 8769 */ 8770 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8771 int keyEventAction; 8772 int eventHubAction; 8773 if (down) { 8774 keyEventAction = KeyEvent.ACTION_DOWN; 8775 eventHubAction = EventHub.KEY_DOWN; 8776 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8777 } else { 8778 keyEventAction = KeyEvent.ACTION_UP; 8779 eventHubAction = EventHub.KEY_UP; 8780 } 8781 8782 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8783 1, (metaState & KeyEvent.META_SHIFT_ON) 8784 | (metaState & KeyEvent.META_ALT_ON) 8785 | (metaState & KeyEvent.META_SYM_ON) 8786 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8787 mWebViewCore.sendMessage(eventHubAction, event); 8788 } 8789 8790 // return true if the key was handled 8791 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8792 long time) { 8793 if (mNativeClass == 0) { 8794 return false; 8795 } 8796 mInitialHitTestResult = null; 8797 mLastCursorTime = time; 8798 mLastCursorBounds = nativeGetCursorRingBounds(); 8799 boolean keyHandled 8800 = nativeMoveCursor(keyCode, count, noScroll) == false; 8801 if (DebugFlags.WEB_VIEW) { 8802 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8803 + " mLastCursorTime=" + mLastCursorTime 8804 + " handled=" + keyHandled); 8805 } 8806 if (keyHandled == false) { 8807 return keyHandled; 8808 } 8809 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8810 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8811 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8812 // set last touch so that context menu related functions will work 8813 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8814 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8815 if (mHeightCanMeasure == false) { 8816 return keyHandled; 8817 } 8818 Rect visRect = new Rect(); 8819 calcOurVisibleRect(visRect); 8820 Rect outset = new Rect(visRect); 8821 int maxXScroll = visRect.width() / 2; 8822 int maxYScroll = visRect.height() / 2; 8823 outset.inset(-maxXScroll, -maxYScroll); 8824 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8825 return keyHandled; 8826 } 8827 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8828 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8829 maxXScroll); 8830 if (maxH > 0) { 8831 pinScrollBy(maxH, 0, true, 0); 8832 } else { 8833 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8834 -maxXScroll); 8835 if (maxH < 0) { 8836 pinScrollBy(maxH, 0, true, 0); 8837 } 8838 } 8839 if (mLastCursorBounds.isEmpty()) return keyHandled; 8840 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8841 return keyHandled; 8842 } 8843 if (DebugFlags.WEB_VIEW) { 8844 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8845 + contentCursorRingBounds); 8846 } 8847 requestRectangleOnScreen(viewCursorRingBounds); 8848 return keyHandled; 8849 } 8850 8851 /** 8852 * @return Whether accessibility script has been injected. 8853 */ 8854 private boolean accessibilityScriptInjected() { 8855 // TODO: Maybe the injected script should announce its presence in 8856 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8857 // will check that as one of the conditions it looks for 8858 return mAccessibilityScriptInjected; 8859 } 8860 8861 /** 8862 * Set the background color. It's white by default. Pass 8863 * zero to make the view transparent. 8864 * @param color the ARGB color described by Color.java 8865 */ 8866 @Override 8867 public void setBackgroundColor(int color) { 8868 mBackgroundColor = color; 8869 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8870 } 8871 8872 /** 8873 * @deprecated This method is now obsolete. 8874 */ 8875 @Deprecated 8876 public void debugDump() { 8877 checkThread(); 8878 nativeDebugDump(); 8879 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8880 } 8881 8882 /** 8883 * Draw the HTML page into the specified canvas. This call ignores any 8884 * view-specific zoom, scroll offset, or other changes. It does not draw 8885 * any view-specific chrome, such as progress or URL bars. 8886 * 8887 * @hide only needs to be accessible to Browser and testing 8888 */ 8889 public void drawPage(Canvas canvas) { 8890 nativeDraw(canvas, 0, 0, false); 8891 } 8892 8893 /** 8894 * Enable the communication b/t the webView and VideoViewProxy 8895 * 8896 * @hide only used by the Browser 8897 */ 8898 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 8899 mHTML5VideoViewProxy = proxy; 8900 } 8901 8902 /** 8903 * Enable expanded tiles bound for smoother scrolling. 8904 * 8905 * @hide only used by the Browser 8906 */ 8907 public void setExpandedTileBounds(boolean enabled) { 8908 nativeSetExpandedTileBounds(enabled); 8909 } 8910 8911 /** 8912 * Set the time to wait between passing touches to WebCore. See also the 8913 * TOUCH_SENT_INTERVAL member for further discussion. 8914 * 8915 * @hide This is only used by the DRT test application. 8916 */ 8917 public void setTouchInterval(int interval) { 8918 mCurrentTouchInterval = interval; 8919 } 8920 8921 /** 8922 * Update our cache with updatedText. 8923 * @param updatedText The new text to put in our cache. 8924 */ 8925 /* package */ void updateCachedTextfield(String updatedText) { 8926 // Also place our generation number so that when we look at the cache 8927 // we recognize that it is up to date. 8928 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8929 } 8930 8931 /*package*/ void autoFillForm(int autoFillQueryId) { 8932 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8933 } 8934 8935 /* package */ ViewManager getViewManager() { 8936 return mViewManager; 8937 } 8938 8939 private static void checkThread() { 8940 if (!"main".equals(Thread.currentThread().getName())) { 8941 try { 8942 throw new RuntimeException("A WebView method was called on thread '" + 8943 Thread.currentThread().getName() + "'. " + 8944 "All WebView methods must be called on the UI thread. " + 8945 "Future versions of WebView may not support use on other threads."); 8946 } catch (RuntimeException e) { 8947 Log.e(LOGTAG, Log.getStackTraceString(e)); 8948 } 8949 } 8950 } 8951 8952 private native int nativeCacheHitFramePointer(); 8953 private native boolean nativeCacheHitIsPlugin(); 8954 private native Rect nativeCacheHitNodeBounds(); 8955 private native int nativeCacheHitNodePointer(); 8956 /* package */ native void nativeClearCursor(); 8957 private native void nativeCreate(int ptr, String drawableDir, AssetManager am); 8958 private native int nativeCursorFramePointer(); 8959 private native Rect nativeCursorNodeBounds(); 8960 private native int nativeCursorNodePointer(); 8961 private native boolean nativeCursorIntersects(Rect visibleRect); 8962 private native boolean nativeCursorIsAnchor(); 8963 private native boolean nativeCursorIsTextInput(); 8964 private native Point nativeCursorPosition(); 8965 private native String nativeCursorText(); 8966 /** 8967 * Returns true if the native cursor node says it wants to handle key events 8968 * (ala plugins). This can only be called if mNativeClass is non-zero! 8969 */ 8970 private native boolean nativeCursorWantsKeyEvents(); 8971 private native void nativeDebugDump(); 8972 private native void nativeDestroy(); 8973 8974 /** 8975 * Draw the picture set with a background color and extra. If 8976 * "splitIfNeeded" is true and the return value is not 0, the return value 8977 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8978 * native allocation can be freed. 8979 */ 8980 private native int nativeDraw(Canvas canvas, int color, int extra, 8981 boolean splitIfNeeded); 8982 private native void nativeDumpDisplayTree(String urlOrNull); 8983 private native boolean nativeEvaluateLayersAnimations(); 8984 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 8985 float scale, int extras); 8986 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 8987 private native void nativeExtendSelection(int x, int y); 8988 private native int nativeFindAll(String findLower, String findUpper, 8989 boolean sameAsLastSearch); 8990 private native void nativeFindNext(boolean forward); 8991 /* package */ native int nativeFocusCandidateFramePointer(); 8992 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8993 /* package */ native boolean nativeFocusCandidateIsPassword(); 8994 private native boolean nativeFocusCandidateIsRtlText(); 8995 private native boolean nativeFocusCandidateIsTextInput(); 8996 /* package */ native int nativeFocusCandidateMaxLength(); 8997 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8998 /* package */ native String nativeFocusCandidateName(); 8999 private native Rect nativeFocusCandidateNodeBounds(); 9000 /** 9001 * @return A Rect with left, top, right, bottom set to the corresponding 9002 * padding values in the focus candidate, if it is a textfield/textarea with 9003 * a style. Otherwise return null. This is not actually a rectangle; Rect 9004 * is being used to pass four integers. 9005 */ 9006 private native Rect nativeFocusCandidatePaddingRect(); 9007 /* package */ native int nativeFocusCandidatePointer(); 9008 private native String nativeFocusCandidateText(); 9009 /* package */ native float nativeFocusCandidateTextSize(); 9010 /* package */ native int nativeFocusCandidateLineHeight(); 9011 /** 9012 * Returns an integer corresponding to WebView.cpp::type. 9013 * See WebTextView.setType() 9014 */ 9015 private native int nativeFocusCandidateType(); 9016 private native boolean nativeFocusIsPlugin(); 9017 private native Rect nativeFocusNodeBounds(); 9018 /* package */ native int nativeFocusNodePointer(); 9019 private native Rect nativeGetCursorRingBounds(); 9020 private native String nativeGetSelection(); 9021 private native boolean nativeHasCursorNode(); 9022 private native boolean nativeHasFocusNode(); 9023 private native void nativeHideCursor(); 9024 private native boolean nativeHitSelection(int x, int y); 9025 private native String nativeImageURI(int x, int y); 9026 private native void nativeInstrumentReport(); 9027 private native Rect nativeLayerBounds(int layer); 9028 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9029 // return true if the page has been scrolled 9030 private native boolean nativeMotionUp(int x, int y, int slop); 9031 // returns false if it handled the key 9032 private native boolean nativeMoveCursor(int keyCode, int count, 9033 boolean noScroll); 9034 private native int nativeMoveGeneration(); 9035 private native void nativeMoveSelection(int x, int y); 9036 /** 9037 * @return true if the page should get the shift and arrow keys, rather 9038 * than select text/navigation. 9039 * 9040 * If the focus is a plugin, or if the focus and cursor match and are 9041 * a contentEditable element, then the page should handle these keys. 9042 */ 9043 private native boolean nativePageShouldHandleShiftAndArrows(); 9044 private native boolean nativePointInNavCache(int x, int y, int slop); 9045 // Like many other of our native methods, you must make sure that 9046 // mNativeClass is not null before calling this method. 9047 private native void nativeRecordButtons(boolean focused, 9048 boolean pressed, boolean invalidate); 9049 private native void nativeResetSelection(); 9050 private native Point nativeSelectableText(); 9051 private native void nativeSelectAll(); 9052 private native void nativeSelectBestAt(Rect rect); 9053 private native void nativeSelectAt(int x, int y); 9054 private native int nativeSelectionX(); 9055 private native int nativeSelectionY(); 9056 private native int nativeFindIndex(); 9057 private native void nativeSetExtendSelection(); 9058 private native void nativeSetFindIsEmpty(); 9059 private native void nativeSetFindIsUp(boolean isUp); 9060 private native void nativeSetHeightCanMeasure(boolean measure); 9061 private native void nativeSetBaseLayer(int layer, Region invalRegion, 9062 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 9063 private native void nativeShowCursorTimed(); 9064 private native void nativeReplaceBaseContent(int content); 9065 private native void nativeCopyBaseContentToPicture(Picture pict); 9066 private native boolean nativeHasContent(); 9067 private native void nativeSetSelectionPointer(boolean set, 9068 float scale, int x, int y); 9069 private native boolean nativeStartSelection(int x, int y); 9070 private native void nativeStopGL(); 9071 private native Rect nativeSubtractLayers(Rect content); 9072 private native int nativeTextGeneration(); 9073 // Never call this version except by updateCachedTextfield(String) - 9074 // we always want to pass in our generation number. 9075 private native void nativeUpdateCachedTextfield(String updatedText, 9076 int generation); 9077 private native boolean nativeWordSelection(int x, int y); 9078 // return NO_LEFTEDGE means failure. 9079 static final int NO_LEFTEDGE = -1; 9080 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9081 9082 private native void nativeSetExpandedTileBounds(boolean enabled); 9083 9084 // Returns a pointer to the scrollable LayerAndroid at the given point. 9085 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9086 Rect scrollBounds); 9087 /** 9088 * Scroll the specified layer. 9089 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9090 * @param newX Destination x position to which to scroll. 9091 * @param newY Destination y position to which to scroll. 9092 * @return True if the layer is successfully scrolled. 9093 */ 9094 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9095} 9096