WebView.java revision fbb1560d6e2fa2305f33d65a7447a99631f721d6
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.Shader; 48import android.graphics.drawable.Drawable; 49import android.net.Proxy; 50import android.net.ProxyProperties; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Looper; 57import android.os.Message; 58import android.os.StrictMode; 59import android.provider.Settings; 60import android.speech.tts.TextToSpeech; 61import android.text.Selection; 62import android.text.Spannable; 63import android.util.AttributeSet; 64import android.util.EventLog; 65import android.util.Log; 66import android.view.Gravity; 67import android.view.HardwareCanvas; 68import android.view.InputDevice; 69import android.view.KeyCharacterMap; 70import android.view.KeyEvent; 71import android.view.LayoutInflater; 72import android.view.MotionEvent; 73import android.view.ScaleGestureDetector; 74import android.view.SoundEffectConstants; 75import android.view.VelocityTracker; 76import android.view.View; 77import android.view.ViewConfiguration; 78import android.view.ViewGroup; 79import android.view.ViewParent; 80import android.view.ViewTreeObserver; 81import android.view.accessibility.AccessibilityManager; 82import android.view.inputmethod.EditorInfo; 83import android.view.inputmethod.InputConnection; 84import android.view.inputmethod.InputMethodManager; 85import android.webkit.WebTextView.AutoCompleteAdapter; 86import android.webkit.WebViewCore.DrawData; 87import android.webkit.WebViewCore.EventHub; 88import android.webkit.WebViewCore.TouchEventData; 89import android.webkit.WebViewCore.TouchHighlightData; 90import android.widget.AbsoluteLayout; 91import android.widget.Adapter; 92import android.widget.AdapterView; 93import android.widget.AdapterView.OnItemClickListener; 94import android.widget.ArrayAdapter; 95import android.widget.CheckedTextView; 96import android.widget.LinearLayout; 97import android.widget.ListView; 98import android.widget.OverScroller; 99import android.widget.Toast; 100 101import junit.framework.Assert; 102 103import java.io.File; 104import java.io.FileInputStream; 105import java.io.FileNotFoundException; 106import java.io.FileOutputStream; 107import java.io.IOException; 108import java.io.InputStream; 109import java.io.OutputStream; 110import java.net.URLDecoder; 111import java.util.ArrayList; 112import java.util.HashMap; 113import java.util.HashSet; 114import java.util.List; 115import java.util.Map; 116import java.util.Set; 117import java.util.Vector; 118import java.util.regex.Matcher; 119import java.util.regex.Pattern; 120 121/** 122 * <p>A View that displays web pages. This class is the basis upon which you 123 * can roll your own web browser or simply display some online content within your Activity. 124 * It uses the WebKit rendering engine to display 125 * web pages and includes methods to navigate forward and backward 126 * through a history, zoom in and out, perform text searches and more.</p> 127 * <p>To enable the built-in zoom, set 128 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 129 * (introduced in API version 3). 130 * <p>Note that, in order for your Activity to access the Internet and load web pages 131 * in a WebView, you must add the {@code INTERNET} permissions to your 132 * Android Manifest file:</p> 133 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 134 * 135 * <p>This must be a child of the <a 136 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 137 * element.</p> 138 * 139 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 140 * tutorial</a>.</p> 141 * 142 * <h3>Basic usage</h3> 143 * 144 * <p>By default, a WebView provides no browser-like widgets, does not 145 * enable JavaScript and web page errors are ignored. If your goal is only 146 * to display some HTML as a part of your UI, this is probably fine; 147 * the user won't need to interact with the web page beyond reading 148 * it, and the web page won't need to interact with the user. If you 149 * actually want a full-blown web browser, then you probably want to 150 * invoke the Browser application with a URL Intent rather than show it 151 * with a WebView. For example: 152 * <pre> 153 * Uri uri = Uri.parse("http://www.example.com"); 154 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 155 * startActivity(intent); 156 * </pre> 157 * <p>See {@link android.content.Intent} for more information.</p> 158 * 159 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 160 * or set the entire Activity window as a WebView during {@link 161 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 162 * <pre class="prettyprint"> 163 * WebView webview = new WebView(this); 164 * setContentView(webview); 165 * </pre> 166 * 167 * <p>Then load the desired web page:</p> 168 * <pre> 169 * // Simplest usage: note that an exception will NOT be thrown 170 * // if there is an error loading this page (see below). 171 * webview.loadUrl("http://slashdot.org/"); 172 * 173 * // OR, you can also load from an HTML string: 174 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 175 * webview.loadData(summary, "text/html", null); 176 * // ... although note that there are restrictions on what this HTML can do. 177 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 178 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 179 * </pre> 180 * 181 * <p>A WebView has several customization points where you can add your 182 * own behavior. These are:</p> 183 * 184 * <ul> 185 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 186 * This class is called when something that might impact a 187 * browser UI happens, for instance, progress updates and 188 * JavaScript alerts are sent here (see <a 189 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 190 * </li> 191 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 192 * It will be called when things happen that impact the 193 * rendering of the content, eg, errors or form submissions. You 194 * can also intercept URL loading here (via {@link 195 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 196 * shouldOverrideUrlLoading()}).</li> 197 * <li>Modifying the {@link android.webkit.WebSettings}, such as 198 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 199 * setJavaScriptEnabled()}. </li> 200 * <li>Adding JavaScript-to-Java interfaces with the {@link 201 * android.webkit.WebView#addJavascriptInterface} method. 202 * This lets you bind Java objects into the WebView so they can be 203 * controlled from the web pages JavaScript.</li> 204 * </ul> 205 * 206 * <p>Here's a more complicated example, showing error handling, 207 * settings, and progress notification:</p> 208 * 209 * <pre class="prettyprint"> 210 * // Let's display the progress in the activity title bar, like the 211 * // browser app does. 212 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 213 * 214 * webview.getSettings().setJavaScriptEnabled(true); 215 * 216 * final Activity activity = this; 217 * webview.setWebChromeClient(new WebChromeClient() { 218 * public void onProgressChanged(WebView view, int progress) { 219 * // Activities and WebViews measure progress with different scales. 220 * // The progress meter will automatically disappear when we reach 100% 221 * activity.setProgress(progress * 1000); 222 * } 223 * }); 224 * webview.setWebViewClient(new WebViewClient() { 225 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 226 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 227 * } 228 * }); 229 * 230 * webview.loadUrl("http://slashdot.org/"); 231 * </pre> 232 * 233 * <h3>Cookie and window management</h3> 234 * 235 * <p>For obvious security reasons, your application has its own 236 * cache, cookie store etc.—it does not share the Browser 237 * application's data. Cookies are managed on a separate thread, so 238 * operations like index building don't block the UI 239 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 240 * if you want to use cookies in your application. 241 * </p> 242 * 243 * <p>By default, requests by the HTML to open new windows are 244 * ignored. This is true whether they be opened by JavaScript or by 245 * the target attribute on a link. You can customize your 246 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 247 * and render them in whatever manner you want.</p> 248 * 249 * <p>The standard behavior for an Activity is to be destroyed and 250 * recreated when the device orientation or any other configuration changes. This will cause 251 * the WebView to reload the current page. If you don't want that, you 252 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 253 * changes, and then just leave the WebView alone. It'll automatically 254 * re-orient itself as appropriate. Read <a 255 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 256 * more information about how to handle configuration changes during runtime.</p> 257 * 258 * 259 * <h3>Building web pages to support different screen densities</h3> 260 * 261 * <p>The screen density of a device is based on the screen resolution. A screen with low density 262 * has fewer available pixels per inch, where a screen with high density 263 * has more — sometimes significantly more — pixels per inch. The density of a 264 * screen is important because, other things being equal, a UI element (such as a button) whose 265 * height and width are defined in terms of screen pixels will appear larger on the lower density 266 * screen and smaller on the higher density screen. 267 * For simplicity, Android collapses all actual screen densities into three generalized densities: 268 * high, medium, and low.</p> 269 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 270 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 271 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 272 * are bigger). 273 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 274 * you (as a web developer) target screens with different screen densities.</p> 275 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 276 * <ul> 277 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 278 * default scaling factor used for the current device. For example, if the value of {@code 279 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 280 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 281 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 282 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 283 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 284 * (discussed below), then you can stop this default scaling behavior.</li> 285 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 286 * densities for which this style sheet is to be used. The corresponding value should be either 287 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 288 * density, or high density screens, respectively. For example: 289 * <pre> 290 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 291 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 292 * which is the high density pixel ratio.</p> 293 * </li> 294 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 295 * this to specify the target density for which the web page is designed, using the following 296 * values: 297 * <ul> 298 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 299 * occurs.</li> 300 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 301 * as appropriate.</li> 302 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 303 * low density screens scale down. This is also the default behavior.</li> 304 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 305 * as appropriate.</li> 306 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 307 * values are 70-400).</li> 308 * </ul> 309 * <p>Here's an example meta tag to specify the target density:</p> 310 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 311 * </ul> 312 * <p>If you want to modify your web page for different densities, by using the {@code 313 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 314 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 315 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 316 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 317 * 318 * 319 */ 320@Widget 321public class WebView extends AbsoluteLayout 322 implements ViewTreeObserver.OnGlobalFocusChangeListener, 323 ViewGroup.OnHierarchyChangeListener { 324 325 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 326 public void onGlobalLayout() { 327 if (isShown()) { 328 setGLRectViewport(); 329 } 330 } 331 } 332 333 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 334 public void onScrollChanged() { 335 if (isShown()) { 336 setGLRectViewport(); 337 } 338 } 339 } 340 341 // The listener to capture global layout change event. 342 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 343 344 // The listener to capture scroll event. 345 private InnerScrollChangedListener mScrollChangedListener = null; 346 347 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 348 // the screen all-the-time. Good for profiling our drawing code 349 static private final boolean AUTO_REDRAW_HACK = false; 350 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 351 private boolean mAutoRedraw; 352 353 // Reference to the AlertDialog displayed by InvokeListBox. 354 // It's used to dismiss the dialog in destroy if not done before. 355 private AlertDialog mListBoxDialog = null; 356 357 static final String LOGTAG = "webview"; 358 359 private ZoomManager mZoomManager; 360 361 private final Rect mGLRectViewport = new Rect(); 362 private final Rect mViewRectViewport = new Rect(); 363 private boolean mGLViewportEmpty = false; 364 365 /** 366 * Transportation object for returning WebView across thread boundaries. 367 */ 368 public class WebViewTransport { 369 private WebView mWebview; 370 371 /** 372 * Set the WebView to the transportation object. 373 * @param webview The WebView to transport. 374 */ 375 public synchronized void setWebView(WebView webview) { 376 mWebview = webview; 377 } 378 379 /** 380 * Return the WebView object. 381 * @return WebView The transported WebView object. 382 */ 383 public synchronized WebView getWebView() { 384 return mWebview; 385 } 386 } 387 388 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 389 private final CallbackProxy mCallbackProxy; 390 391 private final WebViewDatabase mDatabase; 392 393 // SSL certificate for the main top-level page (if secure) 394 private SslCertificate mCertificate; 395 396 // Native WebView pointer that is 0 until the native object has been 397 // created. 398 private int mNativeClass; 399 // This would be final but it needs to be set to null when the WebView is 400 // destroyed. 401 private WebViewCore mWebViewCore; 402 // Handler for dispatching UI messages. 403 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 404 private WebTextView mWebTextView; 405 // Used to ignore changes to webkit text that arrives to the UI side after 406 // more key events. 407 private int mTextGeneration; 408 409 /* package */ void incrementTextGeneration() { mTextGeneration++; } 410 411 // Used by WebViewCore to create child views. 412 /* package */ final ViewManager mViewManager; 413 414 // Used to display in full screen mode 415 PluginFullScreenHolder mFullScreenHolder; 416 417 /** 418 * Position of the last touch event in pixels. 419 * Use integer to prevent loss of dragging delta calculation accuracy; 420 * which was done in float and converted to integer, and resulted in gradual 421 * and compounding touch position and view dragging mismatch. 422 */ 423 private int mLastTouchX; 424 private int mLastTouchY; 425 private int mStartTouchX; 426 private int mStartTouchY; 427 private float mAverageAngle; 428 429 /** 430 * Time of the last touch event. 431 */ 432 private long mLastTouchTime; 433 434 /** 435 * Time of the last time sending touch event to WebViewCore 436 */ 437 private long mLastSentTouchTime; 438 439 /** 440 * The minimum elapsed time before sending another ACTION_MOVE event to 441 * WebViewCore. This really should be tuned for each type of the devices. 442 * For example in Google Map api test case, it takes Dream device at least 443 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 444 * triggering the layout and drawing the picture. While the same process 445 * takes 60+ms on the current high speed device. If we make 446 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 447 * to WebViewCore queue and the real layout and draw events will be pushed 448 * to further, which slows down the refresh rate. Choose 50 to favor the 449 * current high speed devices. For Dream like devices, 100 is a better 450 * choice. Maybe make this in the buildspec later. 451 * (Update 12/14/2010: changed to 0 since current device should be able to 452 * handle the raw events and Map team voted to have the raw events too. 453 */ 454 private static final int TOUCH_SENT_INTERVAL = 0; 455 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 456 457 /** 458 * Helper class to get velocity for fling 459 */ 460 VelocityTracker mVelocityTracker; 461 private int mMaximumFling; 462 private float mLastVelocity; 463 private float mLastVelX; 464 private float mLastVelY; 465 466 // The id of the native layer being scrolled. 467 private int mScrollingLayer; 468 private Rect mScrollingLayerRect = new Rect(); 469 470 // only trigger accelerated fling if the new velocity is at least 471 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 472 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 473 474 /** 475 * Touch mode 476 */ 477 private int mTouchMode = TOUCH_DONE_MODE; 478 private static final int TOUCH_INIT_MODE = 1; 479 private static final int TOUCH_DRAG_START_MODE = 2; 480 private static final int TOUCH_DRAG_MODE = 3; 481 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 482 private static final int TOUCH_SHORTPRESS_MODE = 5; 483 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 484 private static final int TOUCH_DONE_MODE = 7; 485 private static final int TOUCH_PINCH_DRAG = 8; 486 private static final int TOUCH_DRAG_LAYER_MODE = 9; 487 488 // Whether to forward the touch events to WebCore 489 // Can only be set by WebKit via JNI. 490 private boolean mForwardTouchEvents = false; 491 492 // Whether to prevent default during touch. The initial value depends on 493 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 494 // for touch down. Otherwise UI will wait for the answer of the first 495 // confirmed move before taking over the control. 496 private static final int PREVENT_DEFAULT_NO = 0; 497 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 498 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 499 private static final int PREVENT_DEFAULT_YES = 3; 500 private static final int PREVENT_DEFAULT_IGNORE = 4; 501 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 502 503 // true when the touch movement exceeds the slop 504 private boolean mConfirmMove; 505 506 // if true, touch events will be first processed by WebCore, if prevent 507 // default is not set, the UI will continue handle them. 508 private boolean mDeferTouchProcess; 509 510 // to avoid interfering with the current touch events, track them 511 // separately. Currently no snapping or fling in the deferred process mode 512 private int mDeferTouchMode = TOUCH_DONE_MODE; 513 private float mLastDeferTouchX; 514 private float mLastDeferTouchY; 515 516 // To keep track of whether the current drag was initiated by a WebTextView, 517 // so that we know not to hide the cursor 518 boolean mDragFromTextInput; 519 520 // Whether or not to draw the cursor ring. 521 private boolean mDrawCursorRing = true; 522 523 // true if onPause has been called (and not onResume) 524 private boolean mIsPaused; 525 526 private HitTestResult mInitialHitTestResult; 527 528 /** 529 * Customizable constant 530 */ 531 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 532 private int mTouchSlopSquare; 533 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 534 private int mDoubleTapSlopSquare; 535 // pre-computed density adjusted navigation slop 536 private int mNavSlop; 537 // This should be ViewConfiguration.getTapTimeout() 538 // But system time out is 100ms, which is too short for the browser. 539 // In the browser, if it switches out of tap too soon, jump tap won't work. 540 private static final int TAP_TIMEOUT = 200; 541 // This should be ViewConfiguration.getLongPressTimeout() 542 // But system time out is 500ms, which is too short for the browser. 543 // With a short timeout, it's difficult to treat trigger a short press. 544 private static final int LONG_PRESS_TIMEOUT = 1000; 545 // needed to avoid flinging after a pause of no movement 546 private static final int MIN_FLING_TIME = 250; 547 // draw unfiltered after drag is held without movement 548 private static final int MOTIONLESS_TIME = 100; 549 // The amount of content to overlap between two screens when going through 550 // pages with the space bar, in pixels. 551 private static final int PAGE_SCROLL_OVERLAP = 24; 552 553 /** 554 * These prevent calling requestLayout if either dimension is fixed. This 555 * depends on the layout parameters and the measure specs. 556 */ 557 boolean mWidthCanMeasure; 558 boolean mHeightCanMeasure; 559 560 // Remember the last dimensions we sent to the native side so we can avoid 561 // sending the same dimensions more than once. 562 int mLastWidthSent; 563 int mLastHeightSent; 564 // Since view height sent to webkit could be fixed to avoid relayout, this 565 // value records the last sent actual view height. 566 int mLastActualHeightSent; 567 568 private int mContentWidth; // cache of value from WebViewCore 569 private int mContentHeight; // cache of value from WebViewCore 570 571 // Need to have the separate control for horizontal and vertical scrollbar 572 // style than the View's single scrollbar style 573 private boolean mOverlayHorizontalScrollbar = true; 574 private boolean mOverlayVerticalScrollbar = false; 575 576 // our standard speed. this way small distances will be traversed in less 577 // time than large distances, but we cap the duration, so that very large 578 // distances won't take too long to get there. 579 private static final int STD_SPEED = 480; // pixels per second 580 // time for the longest scroll animation 581 private static final int MAX_DURATION = 750; // milliseconds 582 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 583 584 // Used by OverScrollGlow 585 OverScroller mScroller; 586 587 private boolean mInOverScrollMode = false; 588 private static Paint mOverScrollBackground; 589 private static Paint mOverScrollBorder; 590 591 private boolean mWrapContent; 592 private static final int MOTIONLESS_FALSE = 0; 593 private static final int MOTIONLESS_PENDING = 1; 594 private static final int MOTIONLESS_TRUE = 2; 595 private static final int MOTIONLESS_IGNORE = 3; 596 private int mHeldMotionless; 597 598 // An instance for injecting accessibility in WebViews with disabled 599 // JavaScript or ones for which no accessibility script exists 600 private AccessibilityInjector mAccessibilityInjector; 601 602 // flag indicating if accessibility script is injected so we 603 // know to handle Shift and arrows natively first 604 private boolean mAccessibilityScriptInjected; 605 606 // the color used to highlight the touch rectangles 607 private static final int mHightlightColor = 0x33000000; 608 // the round corner for the highlight path 609 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 610 // the region indicating where the user touched on the screen 611 private Region mTouchHighlightRegion = new Region(); 612 // the paint for the touch highlight 613 private Paint mTouchHightlightPaint; 614 // debug only 615 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 616 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 617 private Paint mTouchCrossHairColor; 618 private int mTouchHighlightX; 619 private int mTouchHighlightY; 620 621 // Basically this proxy is used to tell the Video to update layer tree at 622 // SetBaseLayer time and to pause when WebView paused. 623 private HTML5VideoViewProxy mHTML5VideoViewProxy; 624 625 // If we are using a set picture, don't send view updates to webkit 626 private boolean mBlockWebkitViewMessages = false; 627 628 /* 629 * Private message ids 630 */ 631 private static final int REMEMBER_PASSWORD = 1; 632 private static final int NEVER_REMEMBER_PASSWORD = 2; 633 private static final int SWITCH_TO_SHORTPRESS = 3; 634 private static final int SWITCH_TO_LONGPRESS = 4; 635 private static final int RELEASE_SINGLE_TAP = 5; 636 private static final int REQUEST_FORM_DATA = 6; 637 private static final int RESUME_WEBCORE_PRIORITY = 7; 638 private static final int DRAG_HELD_MOTIONLESS = 8; 639 private static final int AWAKEN_SCROLL_BARS = 9; 640 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 641 private static final int SCROLL_SELECT_TEXT = 11; 642 643 644 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 645 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 646 647 /* 648 * Package message ids 649 */ 650 static final int SCROLL_TO_MSG_ID = 101; 651 static final int NEW_PICTURE_MSG_ID = 105; 652 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 653 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 654 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 655 static final int UPDATE_ZOOM_RANGE = 109; 656 static final int UNHANDLED_NAV_KEY = 110; 657 static final int CLEAR_TEXT_ENTRY = 111; 658 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 659 static final int SHOW_RECT_MSG_ID = 113; 660 static final int LONG_PRESS_CENTER = 114; 661 static final int PREVENT_TOUCH_ID = 115; 662 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 663 // obj=Rect in doc coordinates 664 static final int INVAL_RECT_MSG_ID = 117; 665 static final int REQUEST_KEYBOARD = 118; 666 static final int DO_MOTION_UP = 119; 667 static final int SHOW_FULLSCREEN = 120; 668 static final int HIDE_FULLSCREEN = 121; 669 static final int DOM_FOCUS_CHANGED = 122; 670 static final int REPLACE_BASE_CONTENT = 123; 671 static final int FORM_DID_BLUR = 124; 672 static final int RETURN_LABEL = 125; 673 static final int FIND_AGAIN = 126; 674 static final int CENTER_FIT_RECT = 127; 675 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 676 static final int SET_SCROLLBAR_MODES = 129; 677 static final int SELECTION_STRING_CHANGED = 130; 678 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 679 static final int SAVE_WEBARCHIVE_FINISHED = 132; 680 681 static final int SET_AUTOFILLABLE = 133; 682 static final int AUTOFILL_COMPLETE = 134; 683 684 static final int SELECT_AT = 135; 685 static final int SCREEN_ON = 136; 686 static final int ENTER_FULLSCREEN_VIDEO = 137; 687 688 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 689 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 690 691 static final String[] HandlerPrivateDebugString = { 692 "REMEMBER_PASSWORD", // = 1; 693 "NEVER_REMEMBER_PASSWORD", // = 2; 694 "SWITCH_TO_SHORTPRESS", // = 3; 695 "SWITCH_TO_LONGPRESS", // = 4; 696 "RELEASE_SINGLE_TAP", // = 5; 697 "REQUEST_FORM_DATA", // = 6; 698 "RESUME_WEBCORE_PRIORITY", // = 7; 699 "DRAG_HELD_MOTIONLESS", // = 8; 700 "AWAKEN_SCROLL_BARS", // = 9; 701 "PREVENT_DEFAULT_TIMEOUT", // = 10; 702 "SCROLL_SELECT_TEXT" // = 11; 703 }; 704 705 static final String[] HandlerPackageDebugString = { 706 "SCROLL_TO_MSG_ID", // = 101; 707 "102", // = 102; 708 "103", // = 103; 709 "104", // = 104; 710 "NEW_PICTURE_MSG_ID", // = 105; 711 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 712 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 713 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 714 "UPDATE_ZOOM_RANGE", // = 109; 715 "UNHANDLED_NAV_KEY", // = 110; 716 "CLEAR_TEXT_ENTRY", // = 111; 717 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 718 "SHOW_RECT_MSG_ID", // = 113; 719 "LONG_PRESS_CENTER", // = 114; 720 "PREVENT_TOUCH_ID", // = 115; 721 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 722 "INVAL_RECT_MSG_ID", // = 117; 723 "REQUEST_KEYBOARD", // = 118; 724 "DO_MOTION_UP", // = 119; 725 "SHOW_FULLSCREEN", // = 120; 726 "HIDE_FULLSCREEN", // = 121; 727 "DOM_FOCUS_CHANGED", // = 122; 728 "REPLACE_BASE_CONTENT", // = 123; 729 "FORM_DID_BLUR", // = 124; 730 "RETURN_LABEL", // = 125; 731 "FIND_AGAIN", // = 126; 732 "CENTER_FIT_RECT", // = 127; 733 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 734 "SET_SCROLLBAR_MODES", // = 129; 735 "SELECTION_STRING_CHANGED", // = 130; 736 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 737 "SAVE_WEBARCHIVE_FINISHED", // = 132; 738 "SET_AUTOFILLABLE", // = 133; 739 "AUTOFILL_COMPLETE", // = 134; 740 "SELECT_AT", // = 135; 741 "SCREEN_ON", // = 136; 742 "ENTER_FULLSCREEN_VIDEO" // = 137; 743 }; 744 745 // If the site doesn't use the viewport meta tag to specify the viewport, 746 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 747 static final int DEFAULT_VIEWPORT_WIDTH = 980; 748 749 // normally we try to fit the content to the minimum preferred width 750 // calculated by the Webkit. To avoid the bad behavior when some site's 751 // minimum preferred width keeps growing when changing the viewport width or 752 // the minimum preferred width is huge, an upper limit is needed. 753 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 754 755 // initial scale in percent. 0 means using default. 756 private int mInitialScaleInPercent = 0; 757 758 // Whether or not a scroll event should be sent to webkit. This is only set 759 // to false when restoring the scroll position. 760 private boolean mSendScrollEvent = true; 761 762 private int mSnapScrollMode = SNAP_NONE; 763 private static final int SNAP_NONE = 0; 764 private static final int SNAP_LOCK = 1; // not a separate state 765 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 766 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 767 private boolean mSnapPositive; 768 769 // keep these in sync with their counterparts in WebView.cpp 770 private static final int DRAW_EXTRAS_NONE = 0; 771 private static final int DRAW_EXTRAS_FIND = 1; 772 private static final int DRAW_EXTRAS_SELECTION = 2; 773 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 774 775 // keep this in sync with WebCore:ScrollbarMode in WebKit 776 private static final int SCROLLBAR_AUTO = 0; 777 private static final int SCROLLBAR_ALWAYSOFF = 1; 778 // as we auto fade scrollbar, this is ignored. 779 private static final int SCROLLBAR_ALWAYSON = 2; 780 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 781 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 782 783 // constants for determining script injection strategy 784 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 785 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 786 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 787 788 // the alias via which accessibility JavaScript interface is exposed 789 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 790 791 // JavaScript to inject the script chooser which will 792 // pick the right script for the current URL 793 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 794 "javascript:(function() {" + 795 " var chooser = document.createElement('script');" + 796 " chooser.type = 'text/javascript';" + 797 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 798 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 799 " })();"; 800 801 // Regular expression that matches the "axs" URL parameter. 802 // The value of 0 means the accessibility script is opted out 803 // The value of 1 means the accessibility script is already injected 804 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 805 806 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 807 private TextToSpeech mTextToSpeech; 808 809 // variable to cache the above pattern in case accessibility is enabled. 810 private Pattern mMatchAxsUrlParameterPattern; 811 812 /** 813 * Max distance to overscroll by in pixels. 814 * This how far content can be pulled beyond its normal bounds by the user. 815 */ 816 private int mOverscrollDistance; 817 818 /** 819 * Max distance to overfling by in pixels. 820 * This is how far flinged content can move beyond the end of its normal bounds. 821 */ 822 private int mOverflingDistance; 823 824 private OverScrollGlow mOverScrollGlow; 825 826 // Used to match key downs and key ups 827 private Vector<Integer> mKeysPressed; 828 829 /* package */ static boolean mLogEvent = true; 830 831 // for event log 832 private long mLastTouchUpTime = 0; 833 834 private WebViewCore.AutoFillData mAutoFillData; 835 836 private static boolean sNotificationsEnabled = true; 837 838 /** 839 * URI scheme for telephone number 840 */ 841 public static final String SCHEME_TEL = "tel:"; 842 /** 843 * URI scheme for email address 844 */ 845 public static final String SCHEME_MAILTO = "mailto:"; 846 /** 847 * URI scheme for map address 848 */ 849 public static final String SCHEME_GEO = "geo:0,0?q="; 850 851 private int mBackgroundColor = Color.WHITE; 852 853 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 854 private int mAutoScrollX = 0; 855 private int mAutoScrollY = 0; 856 private int mMinAutoScrollX = 0; 857 private int mMaxAutoScrollX = 0; 858 private int mMinAutoScrollY = 0; 859 private int mMaxAutoScrollY = 0; 860 private Rect mScrollingLayerBounds = new Rect(); 861 private boolean mSentAutoScrollMessage = false; 862 863 // used for serializing asynchronously handled touch events. 864 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 865 866 // Used to notify listeners of a new picture. 867 private PictureListener mPictureListener; 868 /** 869 * Interface to listen for new pictures as they change. 870 * @deprecated This interface is now obsolete. 871 */ 872 @Deprecated 873 public interface PictureListener { 874 /** 875 * Notify the listener that the picture has changed. 876 * @param view The WebView that owns the picture. 877 * @param picture The new picture. 878 * @deprecated This method is now obsolete. 879 */ 880 @Deprecated 881 public void onNewPicture(WebView view, Picture picture); 882 } 883 884 // FIXME: Want to make this public, but need to change the API file. 885 public /*static*/ class HitTestResult { 886 /** 887 * Default HitTestResult, where the target is unknown 888 */ 889 public static final int UNKNOWN_TYPE = 0; 890 /** 891 * @deprecated This type is no longer used. 892 */ 893 @Deprecated 894 public static final int ANCHOR_TYPE = 1; 895 /** 896 * HitTestResult for hitting a phone number 897 */ 898 public static final int PHONE_TYPE = 2; 899 /** 900 * HitTestResult for hitting a map address 901 */ 902 public static final int GEO_TYPE = 3; 903 /** 904 * HitTestResult for hitting an email address 905 */ 906 public static final int EMAIL_TYPE = 4; 907 /** 908 * HitTestResult for hitting an HTML::img tag 909 */ 910 public static final int IMAGE_TYPE = 5; 911 /** 912 * @deprecated This type is no longer used. 913 */ 914 @Deprecated 915 public static final int IMAGE_ANCHOR_TYPE = 6; 916 /** 917 * HitTestResult for hitting a HTML::a tag with src=http 918 */ 919 public static final int SRC_ANCHOR_TYPE = 7; 920 /** 921 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 922 */ 923 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 924 /** 925 * HitTestResult for hitting an edit text area 926 */ 927 public static final int EDIT_TEXT_TYPE = 9; 928 929 private int mType; 930 private String mExtra; 931 932 HitTestResult() { 933 mType = UNKNOWN_TYPE; 934 } 935 936 private void setType(int type) { 937 mType = type; 938 } 939 940 private void setExtra(String extra) { 941 mExtra = extra; 942 } 943 944 public int getType() { 945 return mType; 946 } 947 948 public String getExtra() { 949 return mExtra; 950 } 951 } 952 953 /** 954 * Construct a new WebView with a Context object. 955 * @param context A Context object used to access application assets. 956 */ 957 public WebView(Context context) { 958 this(context, null); 959 } 960 961 /** 962 * Construct a new WebView with layout parameters. 963 * @param context A Context object used to access application assets. 964 * @param attrs An AttributeSet passed to our parent. 965 */ 966 public WebView(Context context, AttributeSet attrs) { 967 this(context, attrs, com.android.internal.R.attr.webViewStyle); 968 } 969 970 /** 971 * Construct a new WebView with layout parameters and a default style. 972 * @param context A Context object used to access application assets. 973 * @param attrs An AttributeSet passed to our parent. 974 * @param defStyle The default style resource ID. 975 */ 976 public WebView(Context context, AttributeSet attrs, int defStyle) { 977 this(context, attrs, defStyle, false); 978 } 979 980 /** 981 * Construct a new WebView with layout parameters and a default style. 982 * @param context A Context object used to access application assets. 983 * @param attrs An AttributeSet passed to our parent. 984 * @param defStyle The default style resource ID. 985 */ 986 public WebView(Context context, AttributeSet attrs, int defStyle, 987 boolean privateBrowsing) { 988 this(context, attrs, defStyle, null, privateBrowsing); 989 } 990 991 /** 992 * Construct a new WebView with layout parameters, a default style and a set 993 * of custom Javscript interfaces to be added to the WebView at initialization 994 * time. This guarantees that these interfaces will be available when the JS 995 * context is initialized. 996 * @param context A Context object used to access application assets. 997 * @param attrs An AttributeSet passed to our parent. 998 * @param defStyle The default style resource ID. 999 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1000 * object implementing those interfaces, as values. 1001 * @hide pending API council approval. 1002 */ 1003 protected WebView(Context context, AttributeSet attrs, int defStyle, 1004 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1005 super(context, attrs, defStyle); 1006 checkThread(); 1007 1008 // Used by the chrome stack to find application paths 1009 JniUtil.setContext(context); 1010 1011 mCallbackProxy = new CallbackProxy(context, this); 1012 mViewManager = new ViewManager(this); 1013 L10nUtils.setApplicationContext(context.getApplicationContext()); 1014 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1015 mDatabase = WebViewDatabase.getInstance(context); 1016 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1017 mZoomManager = new ZoomManager(this, mCallbackProxy); 1018 1019 /* The init method must follow the creation of certain member variables, 1020 * such as the mZoomManager. 1021 */ 1022 init(); 1023 setupPackageListener(context); 1024 setupProxyListener(context); 1025 updateMultiTouchSupport(context); 1026 1027 if (privateBrowsing) { 1028 startPrivateBrowsing(); 1029 } 1030 1031 mAutoFillData = new WebViewCore.AutoFillData(); 1032 } 1033 1034 private static class ProxyReceiver extends BroadcastReceiver { 1035 @Override 1036 public void onReceive(Context context, Intent intent) { 1037 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1038 handleProxyBroadcast(intent); 1039 } 1040 } 1041 } 1042 1043 /* 1044 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1045 */ 1046 private static ProxyReceiver sProxyReceiver; 1047 1048 /* 1049 * @param context This method expects this to be a valid context 1050 */ 1051 private static synchronized void setupProxyListener(Context context) { 1052 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1053 return; 1054 } 1055 IntentFilter filter = new IntentFilter(); 1056 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1057 sProxyReceiver = new ProxyReceiver(); 1058 Intent currentProxy = context.getApplicationContext().registerReceiver( 1059 sProxyReceiver, filter); 1060 if (currentProxy != null) { 1061 handleProxyBroadcast(currentProxy); 1062 } 1063 } 1064 1065 /* 1066 * @param context This method expects this to be a valid context 1067 */ 1068 private static synchronized void disableProxyListener(Context context) { 1069 if (sProxyReceiver == null) 1070 return; 1071 1072 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1073 sProxyReceiver = null; 1074 } 1075 1076 private static void handleProxyBroadcast(Intent intent) { 1077 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1078 if (proxyProperties == null || proxyProperties.getHost() == null) { 1079 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1080 return; 1081 } 1082 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1083 } 1084 1085 /* 1086 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1087 * or ACTION_PACKAGE_REMOVED. 1088 */ 1089 private static boolean sPackageInstallationReceiverAdded = false; 1090 1091 /* 1092 * A set of Google packages we monitor for the 1093 * navigator.isApplicationInstalled() API. Add additional packages as 1094 * needed. 1095 */ 1096 private static Set<String> sGoogleApps; 1097 static { 1098 sGoogleApps = new HashSet<String>(); 1099 sGoogleApps.add("com.google.android.youtube"); 1100 } 1101 1102 private static class PackageListener extends BroadcastReceiver { 1103 @Override 1104 public void onReceive(Context context, Intent intent) { 1105 final String action = intent.getAction(); 1106 final String packageName = intent.getData().getSchemeSpecificPart(); 1107 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1108 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1109 // if it is replacing, refreshPlugins() when adding 1110 return; 1111 } 1112 1113 if (sGoogleApps.contains(packageName)) { 1114 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1115 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1116 } else { 1117 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1118 } 1119 } 1120 1121 PluginManager pm = PluginManager.getInstance(context); 1122 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1123 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1124 } 1125 } 1126 } 1127 1128 private void setupPackageListener(Context context) { 1129 1130 /* 1131 * we must synchronize the instance check and the creation of the 1132 * receiver to ensure that only ONE receiver exists for all WebView 1133 * instances. 1134 */ 1135 synchronized (WebView.class) { 1136 1137 // if the receiver already exists then we do not need to register it 1138 // again 1139 if (sPackageInstallationReceiverAdded) { 1140 return; 1141 } 1142 1143 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1144 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1145 filter.addDataScheme("package"); 1146 BroadcastReceiver packageListener = new PackageListener(); 1147 context.getApplicationContext().registerReceiver(packageListener, filter); 1148 sPackageInstallationReceiverAdded = true; 1149 } 1150 1151 // check if any of the monitored apps are already installed 1152 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1153 1154 @Override 1155 protected Set<String> doInBackground(Void... unused) { 1156 Set<String> installedPackages = new HashSet<String>(); 1157 PackageManager pm = mContext.getPackageManager(); 1158 for (String name : sGoogleApps) { 1159 try { 1160 PackageInfo pInfo = pm.getPackageInfo(name, 1161 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1162 installedPackages.add(name); 1163 } catch (PackageManager.NameNotFoundException e) { 1164 // package not found 1165 } 1166 } 1167 return installedPackages; 1168 } 1169 1170 // Executes on the UI thread 1171 @Override 1172 protected void onPostExecute(Set<String> installedPackages) { 1173 if (mWebViewCore != null) { 1174 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1175 } 1176 } 1177 }; 1178 task.execute(); 1179 } 1180 1181 void updateMultiTouchSupport(Context context) { 1182 mZoomManager.updateMultiTouchSupport(context); 1183 } 1184 1185 private void init() { 1186 setWillNotDraw(false); 1187 setFocusable(true); 1188 setFocusableInTouchMode(true); 1189 setClickable(true); 1190 setLongClickable(true); 1191 1192 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1193 int slop = configuration.getScaledTouchSlop(); 1194 mTouchSlopSquare = slop * 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 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 * Saves the view data to the output stream. The output is highly 1802 * version specific, and may not be able to be loaded by newer versions 1803 * of WebView. 1804 * @param stream The {@link OutputStream} to save to 1805 * @return True if saved successfully 1806 * @hide 1807 */ 1808 public boolean saveViewState(OutputStream stream) { 1809 try { 1810 return ViewStateSerializer.serializeViewState(stream, this); 1811 } catch (IOException e) { 1812 Log.w(LOGTAG, "Failed to saveViewState", e); 1813 } 1814 return false; 1815 } 1816 1817 /** 1818 * Loads the view data from the input stream. See 1819 * {@link #saveViewState(OutputStream)} for more information. 1820 * @param stream The {@link InputStream} to load from 1821 * @return True if loaded successfully 1822 * @hide 1823 */ 1824 public boolean loadViewState(InputStream stream) { 1825 try { 1826 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1827 mBlockWebkitViewMessages = true; 1828 setNewPicture(mLoadedPicture, true); 1829 return true; 1830 } catch (IOException e) { 1831 Log.w(LOGTAG, "Failed to loadViewState", e); 1832 } 1833 return false; 1834 } 1835 1836 /** 1837 * Clears the view state set with {@link #loadViewState(InputStream)}. 1838 * This WebView will then switch to showing the content from webkit 1839 * @hide 1840 */ 1841 public void clearViewState() { 1842 mBlockWebkitViewMessages = false; 1843 mLoadedPicture = null; 1844 invalidate(); 1845 } 1846 1847 /** 1848 * Restore the state of this WebView from the given map used in 1849 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1850 * be called to restore the state of the WebView before using the object. If 1851 * it is called after the WebView has had a chance to build state (load 1852 * pages, create a back/forward list, etc.) there may be undesirable 1853 * side-effects. Please note that this method no longer restores the 1854 * display data for this WebView. See {@link #savePicture} and {@link 1855 * #restorePicture} for saving and restoring the display data. 1856 * @param inState The incoming Bundle of state. 1857 * @return The restored back/forward list or null if restoreState failed. 1858 * @see #savePicture 1859 * @see #restorePicture 1860 */ 1861 public WebBackForwardList restoreState(Bundle inState) { 1862 checkThread(); 1863 WebBackForwardList returnList = null; 1864 if (inState == null) { 1865 return returnList; 1866 } 1867 if (inState.containsKey("index") && inState.containsKey("history")) { 1868 mCertificate = SslCertificate.restoreState( 1869 inState.getBundle("certificate")); 1870 1871 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1872 final int index = inState.getInt("index"); 1873 // We can't use a clone of the list because we need to modify the 1874 // shared copy, so synchronize instead to prevent concurrent 1875 // modifications. 1876 synchronized (list) { 1877 final List<byte[]> history = 1878 (List<byte[]>) inState.getSerializable("history"); 1879 final int size = history.size(); 1880 // Check the index bounds so we don't crash in native code while 1881 // restoring the history index. 1882 if (index < 0 || index >= size) { 1883 return null; 1884 } 1885 for (int i = 0; i < size; i++) { 1886 byte[] data = history.remove(0); 1887 if (data == null) { 1888 // If we somehow have null data, we cannot reconstruct 1889 // the item and thus our history list cannot be rebuilt. 1890 return null; 1891 } 1892 WebHistoryItem item = new WebHistoryItem(data); 1893 list.addHistoryItem(item); 1894 } 1895 // Grab the most recent copy to return to the caller. 1896 returnList = copyBackForwardList(); 1897 // Update the copy to have the correct index. 1898 returnList.setCurrentIndex(index); 1899 } 1900 // Restore private browsing setting. 1901 if (inState.getBoolean("privateBrowsingEnabled")) { 1902 getSettings().setPrivateBrowsingEnabled(true); 1903 } 1904 mZoomManager.restoreZoomState(inState); 1905 // Remove all pending messages because we are restoring previous 1906 // state. 1907 mWebViewCore.removeMessages(); 1908 // Send a restore state message. 1909 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1910 } 1911 return returnList; 1912 } 1913 1914 /** 1915 * Load the given url with the extra headers. 1916 * @param url The url of the resource to load. 1917 * @param extraHeaders The extra headers sent with this url. This should not 1918 * include the common headers like "user-agent". If it does, it 1919 * will be replaced by the intrinsic value of the WebView. 1920 */ 1921 public void loadUrl(String url, Map<String, String> extraHeaders) { 1922 checkThread(); 1923 loadUrlImpl(url, extraHeaders); 1924 } 1925 1926 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 1927 switchOutDrawHistory(); 1928 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1929 arg.mUrl = url; 1930 arg.mExtraHeaders = extraHeaders; 1931 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1932 clearHelpers(); 1933 } 1934 1935 /** 1936 * Load the given url. 1937 * @param url The url of the resource to load. 1938 */ 1939 public void loadUrl(String url) { 1940 checkThread(); 1941 loadUrlImpl(url); 1942 } 1943 1944 private void loadUrlImpl(String url) { 1945 if (url == null) { 1946 return; 1947 } 1948 loadUrlImpl(url, null); 1949 } 1950 1951 /** 1952 * Load the url with postData using "POST" method into the WebView. If url 1953 * is not a network url, it will be loaded with {link 1954 * {@link #loadUrl(String)} instead. 1955 * 1956 * @param url The url of the resource to load. 1957 * @param postData The data will be passed to "POST" request. 1958 */ 1959 public void postUrl(String url, byte[] postData) { 1960 checkThread(); 1961 if (URLUtil.isNetworkUrl(url)) { 1962 switchOutDrawHistory(); 1963 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1964 arg.mUrl = url; 1965 arg.mPostData = postData; 1966 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1967 clearHelpers(); 1968 } else { 1969 loadUrlImpl(url); 1970 } 1971 } 1972 1973 /** 1974 * Load the given data into the WebView using a 'data' scheme URL. Content 1975 * loaded in this way does not have the ability to load content from the 1976 * network. 1977 * <p> 1978 * If the value of the encoding parameter is 'base64', then the data must 1979 * be encoded as base64. Otherwise, the data must use ASCII encoding for 1980 * octets inside the range of safe URL characters and use the standard %xx 1981 * hex encoding of URLs for octets outside that range. 1982 * @param data A String of data in the given encoding. 1983 * @param mimeType The MIMEType of the data, e.g. 'text/html'. 1984 * @param encoding The encoding of the data. 1985 */ 1986 public void loadData(String data, String mimeType, String encoding) { 1987 checkThread(); 1988 loadDataImpl(data, mimeType, encoding); 1989 } 1990 1991 private void loadDataImpl(String data, String mimeType, String encoding) { 1992 StringBuilder dataUrl = new StringBuilder("data:"); 1993 dataUrl.append(mimeType); 1994 if ("base64".equals(encoding)) { 1995 dataUrl.append(";base64"); 1996 } 1997 dataUrl.append(","); 1998 dataUrl.append(data); 1999 loadUrlImpl(dataUrl.toString()); 2000 } 2001 2002 /** 2003 * Load the given data into the WebView, use the provided URL as the base 2004 * URL for the content. The base URL is the URL that represents the page 2005 * that is loaded through this interface. As such, it is used to resolve any 2006 * relative URLs. The historyUrl is used for the history entry. 2007 * <p> 2008 * Note that content specified in this way can access local device files 2009 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2010 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2011 * @param baseUrl Url to resolve relative paths with, if null defaults to 2012 * "about:blank" 2013 * @param data A String of data in the given encoding. 2014 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 2015 * defaults to "text/html" 2016 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 2017 * @param historyUrl URL to use as the history entry. Can be null. 2018 */ 2019 public void loadDataWithBaseURL(String baseUrl, String data, 2020 String mimeType, String encoding, String historyUrl) { 2021 checkThread(); 2022 2023 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2024 loadDataImpl(data, mimeType, encoding); 2025 return; 2026 } 2027 switchOutDrawHistory(); 2028 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2029 arg.mBaseUrl = baseUrl; 2030 arg.mData = data; 2031 arg.mMimeType = mimeType; 2032 arg.mEncoding = encoding; 2033 arg.mHistoryUrl = historyUrl; 2034 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2035 clearHelpers(); 2036 } 2037 2038 /** 2039 * Saves the current view as a web archive. 2040 * 2041 * @param filename The filename where the archive should be placed. 2042 */ 2043 public void saveWebArchive(String filename) { 2044 checkThread(); 2045 saveWebArchiveImpl(filename, false, null); 2046 } 2047 2048 /* package */ static class SaveWebArchiveMessage { 2049 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2050 mBasename = basename; 2051 mAutoname = autoname; 2052 mCallback = callback; 2053 } 2054 2055 /* package */ final String mBasename; 2056 /* package */ final boolean mAutoname; 2057 /* package */ final ValueCallback<String> mCallback; 2058 /* package */ String mResultFile; 2059 } 2060 2061 /** 2062 * Saves the current view as a web archive. 2063 * 2064 * @param basename The filename where the archive should be placed. 2065 * @param autoname If false, takes basename to be a file. If true, basename 2066 * is assumed to be a directory in which a filename will be 2067 * chosen according to the url of the current page. 2068 * @param callback Called after the web archive has been saved. The 2069 * parameter for onReceiveValue will either be the filename 2070 * under which the file was saved, or null if saving the 2071 * file failed. 2072 */ 2073 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2074 checkThread(); 2075 saveWebArchiveImpl(basename, autoname, callback); 2076 } 2077 2078 private void saveWebArchiveImpl(String basename, boolean autoname, 2079 ValueCallback<String> callback) { 2080 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2081 new SaveWebArchiveMessage(basename, autoname, callback)); 2082 } 2083 2084 /** 2085 * Stop the current load. 2086 */ 2087 public void stopLoading() { 2088 checkThread(); 2089 // TODO: should we clear all the messages in the queue before sending 2090 // STOP_LOADING? 2091 switchOutDrawHistory(); 2092 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2093 } 2094 2095 /** 2096 * Reload the current url. 2097 */ 2098 public void reload() { 2099 checkThread(); 2100 clearHelpers(); 2101 switchOutDrawHistory(); 2102 mWebViewCore.sendMessage(EventHub.RELOAD); 2103 } 2104 2105 /** 2106 * Return true if this WebView has a back history item. 2107 * @return True iff this WebView has a back history item. 2108 */ 2109 public boolean canGoBack() { 2110 checkThread(); 2111 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2112 synchronized (l) { 2113 if (l.getClearPending()) { 2114 return false; 2115 } else { 2116 return l.getCurrentIndex() > 0; 2117 } 2118 } 2119 } 2120 2121 /** 2122 * Go back in the history of this WebView. 2123 */ 2124 public void goBack() { 2125 checkThread(); 2126 goBackOrForwardImpl(-1); 2127 } 2128 2129 /** 2130 * Return true if this WebView has a forward history item. 2131 * @return True iff this Webview has a forward history item. 2132 */ 2133 public boolean canGoForward() { 2134 checkThread(); 2135 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2136 synchronized (l) { 2137 if (l.getClearPending()) { 2138 return false; 2139 } else { 2140 return l.getCurrentIndex() < l.getSize() - 1; 2141 } 2142 } 2143 } 2144 2145 /** 2146 * Go forward in the history of this WebView. 2147 */ 2148 public void goForward() { 2149 checkThread(); 2150 goBackOrForwardImpl(1); 2151 } 2152 2153 /** 2154 * Return true if the page can go back or forward the given 2155 * number of steps. 2156 * @param steps The negative or positive number of steps to move the 2157 * history. 2158 */ 2159 public boolean canGoBackOrForward(int steps) { 2160 checkThread(); 2161 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2162 synchronized (l) { 2163 if (l.getClearPending()) { 2164 return false; 2165 } else { 2166 int newIndex = l.getCurrentIndex() + steps; 2167 return newIndex >= 0 && newIndex < l.getSize(); 2168 } 2169 } 2170 } 2171 2172 /** 2173 * Go to the history item that is the number of steps away from 2174 * the current item. Steps is negative if backward and positive 2175 * if forward. 2176 * @param steps The number of steps to take back or forward in the back 2177 * forward list. 2178 */ 2179 public void goBackOrForward(int steps) { 2180 checkThread(); 2181 goBackOrForwardImpl(steps); 2182 } 2183 2184 private void goBackOrForwardImpl(int steps) { 2185 goBackOrForward(steps, false); 2186 } 2187 2188 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2189 if (steps != 0) { 2190 clearHelpers(); 2191 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2192 ignoreSnapshot ? 1 : 0); 2193 } 2194 } 2195 2196 /** 2197 * Returns true if private browsing is enabled in this WebView. 2198 */ 2199 public boolean isPrivateBrowsingEnabled() { 2200 checkThread(); 2201 return getSettings().isPrivateBrowsingEnabled(); 2202 } 2203 2204 private void startPrivateBrowsing() { 2205 getSettings().setPrivateBrowsingEnabled(true); 2206 } 2207 2208 private boolean extendScroll(int y) { 2209 int finalY = mScroller.getFinalY(); 2210 int newY = pinLocY(finalY + y); 2211 if (newY == finalY) return false; 2212 mScroller.setFinalY(newY); 2213 mScroller.extendDuration(computeDuration(0, y)); 2214 return true; 2215 } 2216 2217 /** 2218 * Scroll the contents of the view up by half the view size 2219 * @param top true to jump to the top of the page 2220 * @return true if the page was scrolled 2221 */ 2222 public boolean pageUp(boolean top) { 2223 checkThread(); 2224 if (mNativeClass == 0) { 2225 return false; 2226 } 2227 nativeClearCursor(); // start next trackball movement from page edge 2228 if (top) { 2229 // go to the top of the document 2230 return pinScrollTo(mScrollX, 0, true, 0); 2231 } 2232 // Page up 2233 int h = getHeight(); 2234 int y; 2235 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2236 y = -h + PAGE_SCROLL_OVERLAP; 2237 } else { 2238 y = -h / 2; 2239 } 2240 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2241 : extendScroll(y); 2242 } 2243 2244 /** 2245 * Scroll the contents of the view down by half the page size 2246 * @param bottom true to jump to bottom of page 2247 * @return true if the page was scrolled 2248 */ 2249 public boolean pageDown(boolean bottom) { 2250 checkThread(); 2251 if (mNativeClass == 0) { 2252 return false; 2253 } 2254 nativeClearCursor(); // start next trackball movement from page edge 2255 if (bottom) { 2256 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2257 } 2258 // Page down. 2259 int h = getHeight(); 2260 int y; 2261 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2262 y = h - PAGE_SCROLL_OVERLAP; 2263 } else { 2264 y = h / 2; 2265 } 2266 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2267 : extendScroll(y); 2268 } 2269 2270 /** 2271 * Clear the view so that onDraw() will draw nothing but white background, 2272 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2273 */ 2274 public void clearView() { 2275 checkThread(); 2276 mContentWidth = 0; 2277 mContentHeight = 0; 2278 setBaseLayer(0, null, false, false); 2279 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2280 } 2281 2282 /** 2283 * Return a new picture that captures the current display of the webview. 2284 * This is a copy of the display, and will be unaffected if the webview 2285 * later loads a different URL. 2286 * 2287 * @return a picture containing the current contents of the view. Note this 2288 * picture is of the entire document, and is not restricted to the 2289 * bounds of the view. 2290 */ 2291 public Picture capturePicture() { 2292 checkThread(); 2293 if (mNativeClass == 0) return null; 2294 Picture result = new Picture(); 2295 nativeCopyBaseContentToPicture(result); 2296 return result; 2297 } 2298 2299 /** 2300 * Return true if the browser is displaying a TextView for text input. 2301 */ 2302 private boolean inEditingMode() { 2303 return mWebTextView != null && mWebTextView.getParent() != null; 2304 } 2305 2306 /** 2307 * Remove the WebTextView. 2308 */ 2309 private void clearTextEntry() { 2310 if (inEditingMode()) { 2311 mWebTextView.remove(); 2312 } else { 2313 // The keyboard may be open with the WebView as the served view 2314 hideSoftKeyboard(); 2315 } 2316 } 2317 2318 /** 2319 * Return the current scale of the WebView 2320 * @return The current scale. 2321 */ 2322 public float getScale() { 2323 checkThread(); 2324 return mZoomManager.getScale(); 2325 } 2326 2327 /** 2328 * Set the initial scale for the WebView. 0 means default. If 2329 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2330 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2331 * WebView starts will this value as initial scale. 2332 * 2333 * @param scaleInPercent The initial scale in percent. 2334 */ 2335 public void setInitialScale(int scaleInPercent) { 2336 checkThread(); 2337 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2338 } 2339 2340 /** 2341 * Invoke the graphical zoom picker widget for this WebView. This will 2342 * result in the zoom widget appearing on the screen to control the zoom 2343 * level of this WebView. 2344 */ 2345 public void invokeZoomPicker() { 2346 checkThread(); 2347 if (!getSettings().supportZoom()) { 2348 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2349 return; 2350 } 2351 clearHelpers(); 2352 mZoomManager.invokeZoomPicker(); 2353 } 2354 2355 /** 2356 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2357 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2358 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2359 * anchor does not have a url or if it is a JavaScript url, the type will 2360 * be UNKNOWN_TYPE and the url has to be retrieved through 2361 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2362 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2363 * the "extra" field. A type of 2364 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2365 * a child node. If a phone number is found, the HitTestResult type is set 2366 * to PHONE_TYPE and the phone number is set in the "extra" field of 2367 * HitTestResult. If a map address is found, the HitTestResult type is set 2368 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2369 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2370 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2371 * HitTestResult type is set to UNKNOWN_TYPE. 2372 */ 2373 public HitTestResult getHitTestResult() { 2374 checkThread(); 2375 return hitTestResult(mInitialHitTestResult); 2376 } 2377 2378 private HitTestResult hitTestResult(HitTestResult fallback) { 2379 if (mNativeClass == 0) { 2380 return null; 2381 } 2382 2383 HitTestResult result = new HitTestResult(); 2384 if (nativeHasCursorNode()) { 2385 if (nativeCursorIsTextInput()) { 2386 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2387 } else { 2388 String text = nativeCursorText(); 2389 if (text != null) { 2390 if (text.startsWith(SCHEME_TEL)) { 2391 result.setType(HitTestResult.PHONE_TYPE); 2392 result.setExtra(text.substring(SCHEME_TEL.length())); 2393 } else if (text.startsWith(SCHEME_MAILTO)) { 2394 result.setType(HitTestResult.EMAIL_TYPE); 2395 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2396 } else if (text.startsWith(SCHEME_GEO)) { 2397 result.setType(HitTestResult.GEO_TYPE); 2398 result.setExtra(URLDecoder.decode(text 2399 .substring(SCHEME_GEO.length()))); 2400 } else if (nativeCursorIsAnchor()) { 2401 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2402 result.setExtra(text); 2403 } 2404 } 2405 } 2406 } else if (fallback != null) { 2407 /* If webkit causes a rebuild while the long press is in progress, 2408 * the cursor node may be reset, even if it is still around. This 2409 * uses the cursor node saved when the touch began. Since the 2410 * nativeImageURI below only changes the result if it is successful, 2411 * this uses the data beneath the touch if available or the original 2412 * tap data otherwise. 2413 */ 2414 Log.v(LOGTAG, "hitTestResult use fallback"); 2415 result = fallback; 2416 } 2417 int type = result.getType(); 2418 if (type == HitTestResult.UNKNOWN_TYPE 2419 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2420 // Now check to see if it is an image. 2421 int contentX = viewToContentX(mLastTouchX + mScrollX); 2422 int contentY = viewToContentY(mLastTouchY + mScrollY); 2423 String text = nativeImageURI(contentX, contentY); 2424 if (text != null) { 2425 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2426 HitTestResult.IMAGE_TYPE : 2427 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2428 result.setExtra(text); 2429 } 2430 } 2431 return result; 2432 } 2433 2434 // Called by JNI when the DOM has changed the focus. Clear the focus so 2435 // that new keys will go to the newly focused field 2436 private void domChangedFocus() { 2437 if (inEditingMode()) { 2438 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2439 } 2440 } 2441 /** 2442 * Request the anchor or image element URL at the last tapped point. 2443 * If hrefMsg is null, this method returns immediately and does not 2444 * dispatch hrefMsg to its target. If the tapped point hits an image, 2445 * an anchor, or an image in an anchor, the message associates 2446 * strings in named keys in its data. The value paired with the key 2447 * may be an empty string. 2448 * 2449 * @param hrefMsg This message will be dispatched with the result of the 2450 * request. The message data contains three keys: 2451 * - "url" returns the anchor's href attribute. 2452 * - "title" returns the anchor's text. 2453 * - "src" returns the image's src attribute. 2454 */ 2455 public void requestFocusNodeHref(Message hrefMsg) { 2456 checkThread(); 2457 if (hrefMsg == null) { 2458 return; 2459 } 2460 int contentX = viewToContentX(mLastTouchX + mScrollX); 2461 int contentY = viewToContentY(mLastTouchY + mScrollY); 2462 if (nativeHasCursorNode()) { 2463 Rect cursorBounds = nativeGetCursorRingBounds(); 2464 if (!cursorBounds.contains(contentX, contentY)) { 2465 int slop = viewToContentDimension(mNavSlop); 2466 cursorBounds.inset(-slop, -slop); 2467 if (cursorBounds.contains(contentX, contentY)) { 2468 contentX = (int) cursorBounds.centerX(); 2469 contentY = (int) cursorBounds.centerY(); 2470 } 2471 } 2472 } 2473 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2474 contentX, contentY, hrefMsg); 2475 } 2476 2477 /** 2478 * Request the url of the image last touched by the user. msg will be sent 2479 * to its target with a String representing the url as its object. 2480 * 2481 * @param msg This message will be dispatched with the result of the request 2482 * as the data member with "url" as key. The result can be null. 2483 */ 2484 public void requestImageRef(Message msg) { 2485 checkThread(); 2486 if (0 == mNativeClass) return; // client isn't initialized 2487 int contentX = viewToContentX(mLastTouchX + mScrollX); 2488 int contentY = viewToContentY(mLastTouchY + mScrollY); 2489 String ref = nativeImageURI(contentX, contentY); 2490 Bundle data = msg.getData(); 2491 data.putString("url", ref); 2492 msg.setData(data); 2493 msg.sendToTarget(); 2494 } 2495 2496 static int pinLoc(int x, int viewMax, int docMax) { 2497// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2498 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2499 // pin the short document to the top/left of the screen 2500 x = 0; 2501// Log.d(LOGTAG, "--- center " + x); 2502 } else if (x < 0) { 2503 x = 0; 2504// Log.d(LOGTAG, "--- zero"); 2505 } else if (x + viewMax > docMax) { 2506 x = docMax - viewMax; 2507// Log.d(LOGTAG, "--- pin " + x); 2508 } 2509 return x; 2510 } 2511 2512 // Expects x in view coordinates 2513 int pinLocX(int x) { 2514 if (mInOverScrollMode) return x; 2515 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2516 } 2517 2518 // Expects y in view coordinates 2519 int pinLocY(int y) { 2520 if (mInOverScrollMode) return y; 2521 return pinLoc(y, getViewHeightWithTitle(), 2522 computeRealVerticalScrollRange() + getTitleHeight()); 2523 } 2524 2525 /** 2526 * A title bar which is embedded in this WebView, and scrolls along with it 2527 * vertically, but not horizontally. 2528 */ 2529 private View mTitleBar; 2530 2531 /** 2532 * the title bar rendering gravity 2533 */ 2534 private int mTitleGravity; 2535 2536 /** 2537 * Add or remove a title bar to be embedded into the WebView, and scroll 2538 * along with it vertically, while remaining in view horizontally. Pass 2539 * null to remove the title bar from the WebView, and return to drawing 2540 * the WebView normally without translating to account for the title bar. 2541 * @hide 2542 */ 2543 public void setEmbeddedTitleBar(View v) { 2544 if (mTitleBar == v) return; 2545 if (mTitleBar != null) { 2546 removeView(mTitleBar); 2547 } 2548 if (null != v) { 2549 addView(v, new AbsoluteLayout.LayoutParams( 2550 ViewGroup.LayoutParams.MATCH_PARENT, 2551 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2552 } 2553 mTitleBar = v; 2554 } 2555 2556 /** 2557 * Set where to render the embedded title bar 2558 * NO_GRAVITY at the top of the page 2559 * TOP at the top of the screen 2560 * @hide 2561 */ 2562 public void setTitleBarGravity(int gravity) { 2563 mTitleGravity = gravity; 2564 // force refresh 2565 invalidate(); 2566 } 2567 2568 /** 2569 * Given a distance in view space, convert it to content space. Note: this 2570 * does not reflect translation, just scaling, so this should not be called 2571 * with coordinates, but should be called for dimensions like width or 2572 * height. 2573 */ 2574 private int viewToContentDimension(int d) { 2575 return Math.round(d * mZoomManager.getInvScale()); 2576 } 2577 2578 /** 2579 * Given an x coordinate in view space, convert it to content space. Also 2580 * may be used for absolute heights (such as for the WebTextView's 2581 * textSize, which is unaffected by the height of the title bar). 2582 */ 2583 /*package*/ int viewToContentX(int x) { 2584 return viewToContentDimension(x); 2585 } 2586 2587 /** 2588 * Given a y coordinate in view space, convert it to content space. 2589 * Takes into account the height of the title bar if there is one 2590 * embedded into the WebView. 2591 */ 2592 /*package*/ int viewToContentY(int y) { 2593 return viewToContentDimension(y - getTitleHeight()); 2594 } 2595 2596 /** 2597 * Given a x coordinate in view space, convert it to content space. 2598 * Returns the result as a float. 2599 */ 2600 private float viewToContentXf(int x) { 2601 return x * mZoomManager.getInvScale(); 2602 } 2603 2604 /** 2605 * Given a y coordinate in view space, convert it to content space. 2606 * Takes into account the height of the title bar if there is one 2607 * embedded into the WebView. Returns the result as a float. 2608 */ 2609 private float viewToContentYf(int y) { 2610 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2611 } 2612 2613 /** 2614 * Given a distance in content space, convert it to view space. Note: this 2615 * does not reflect translation, just scaling, so this should not be called 2616 * with coordinates, but should be called for dimensions like width or 2617 * height. 2618 */ 2619 /*package*/ int contentToViewDimension(int d) { 2620 return Math.round(d * mZoomManager.getScale()); 2621 } 2622 2623 /** 2624 * Given an x coordinate in content space, convert it to view 2625 * space. 2626 */ 2627 /*package*/ int contentToViewX(int x) { 2628 return contentToViewDimension(x); 2629 } 2630 2631 /** 2632 * Given a y coordinate in content space, convert it to view 2633 * space. Takes into account the height of the title bar. 2634 */ 2635 /*package*/ int contentToViewY(int y) { 2636 return contentToViewDimension(y) + getTitleHeight(); 2637 } 2638 2639 private Rect contentToViewRect(Rect x) { 2640 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2641 contentToViewX(x.right), contentToViewY(x.bottom)); 2642 } 2643 2644 /* To invalidate a rectangle in content coordinates, we need to transform 2645 the rect into view coordinates, so we can then call invalidate(...). 2646 2647 Normally, we would just call contentToView[XY](...), which eventually 2648 calls Math.round(coordinate * mActualScale). However, for invalidates, 2649 we need to account for the slop that occurs with antialiasing. To 2650 address that, we are a little more liberal in the size of the rect that 2651 we invalidate. 2652 2653 This liberal calculation calls floor() for the top/left, and ceil() for 2654 the bottom/right coordinates. This catches the possible extra pixels of 2655 antialiasing that we might have missed with just round(). 2656 */ 2657 2658 // Called by JNI to invalidate the View, given rectangle coordinates in 2659 // content space 2660 private void viewInvalidate(int l, int t, int r, int b) { 2661 final float scale = mZoomManager.getScale(); 2662 final int dy = getTitleHeight(); 2663 invalidate((int)Math.floor(l * scale), 2664 (int)Math.floor(t * scale) + dy, 2665 (int)Math.ceil(r * scale), 2666 (int)Math.ceil(b * scale) + dy); 2667 } 2668 2669 // Called by JNI to invalidate the View after a delay, given rectangle 2670 // coordinates in content space 2671 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2672 final float scale = mZoomManager.getScale(); 2673 final int dy = getTitleHeight(); 2674 postInvalidateDelayed(delay, 2675 (int)Math.floor(l * scale), 2676 (int)Math.floor(t * scale) + dy, 2677 (int)Math.ceil(r * scale), 2678 (int)Math.ceil(b * scale) + dy); 2679 } 2680 2681 private void invalidateContentRect(Rect r) { 2682 viewInvalidate(r.left, r.top, r.right, r.bottom); 2683 } 2684 2685 // stop the scroll animation, and don't let a subsequent fling add 2686 // to the existing velocity 2687 private void abortAnimation() { 2688 mScroller.abortAnimation(); 2689 mLastVelocity = 0; 2690 } 2691 2692 /* call from webcoreview.draw(), so we're still executing in the UI thread 2693 */ 2694 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2695 2696 // premature data from webkit, ignore 2697 if ((w | h) == 0) { 2698 return; 2699 } 2700 2701 // don't abort a scroll animation if we didn't change anything 2702 if (mContentWidth != w || mContentHeight != h) { 2703 // record new dimensions 2704 mContentWidth = w; 2705 mContentHeight = h; 2706 // If history Picture is drawn, don't update scroll. They will be 2707 // updated when we get out of that mode. 2708 if (!mDrawHistory) { 2709 // repin our scroll, taking into account the new content size 2710 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2711 if (!mScroller.isFinished()) { 2712 // We are in the middle of a scroll. Repin the final scroll 2713 // position. 2714 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2715 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2716 } 2717 } 2718 } 2719 contentSizeChanged(updateLayout); 2720 } 2721 2722 // Used to avoid sending many visible rect messages. 2723 private Rect mLastVisibleRectSent; 2724 private Rect mLastGlobalRect; 2725 2726 Rect sendOurVisibleRect() { 2727 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2728 Rect rect = new Rect(); 2729 calcOurContentVisibleRect(rect); 2730 // Rect.equals() checks for null input. 2731 if (!rect.equals(mLastVisibleRectSent)) { 2732 if (!mBlockWebkitViewMessages) { 2733 Point pos = new Point(rect.left, rect.top); 2734 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2735 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2736 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2737 } 2738 mLastVisibleRectSent = rect; 2739 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2740 } 2741 Rect globalRect = new Rect(); 2742 if (getGlobalVisibleRect(globalRect) 2743 && !globalRect.equals(mLastGlobalRect)) { 2744 if (DebugFlags.WEB_VIEW) { 2745 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2746 + globalRect.top + ",r=" + globalRect.right + ",b=" 2747 + globalRect.bottom); 2748 } 2749 // TODO: the global offset is only used by windowRect() 2750 // in ChromeClientAndroid ; other clients such as touch 2751 // and mouse events could return view + screen relative points. 2752 if (!mBlockWebkitViewMessages) { 2753 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2754 } 2755 mLastGlobalRect = globalRect; 2756 } 2757 return rect; 2758 } 2759 2760 // Sets r to be the visible rectangle of our webview in view coordinates 2761 private void calcOurVisibleRect(Rect r) { 2762 Point p = new Point(); 2763 getGlobalVisibleRect(r, p); 2764 r.offset(-p.x, -p.y); 2765 } 2766 2767 // Sets r to be our visible rectangle in content coordinates 2768 private void calcOurContentVisibleRect(Rect r) { 2769 calcOurVisibleRect(r); 2770 r.left = viewToContentX(r.left); 2771 // viewToContentY will remove the total height of the title bar. Add 2772 // the visible height back in to account for the fact that if the title 2773 // bar is partially visible, the part of the visible rect which is 2774 // displaying our content is displaced by that amount. 2775 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2776 r.right = viewToContentX(r.right); 2777 r.bottom = viewToContentY(r.bottom); 2778 } 2779 2780 // Sets r to be our visible rectangle in content coordinates. We use this 2781 // method on the native side to compute the position of the fixed layers. 2782 // Uses floating coordinates (necessary to correctly place elements when 2783 // the scale factor is not 1) 2784 private void calcOurContentVisibleRectF(RectF r) { 2785 Rect ri = new Rect(0,0,0,0); 2786 calcOurVisibleRect(ri); 2787 r.left = viewToContentXf(ri.left); 2788 // viewToContentY will remove the total height of the title bar. Add 2789 // the visible height back in to account for the fact that if the title 2790 // bar is partially visible, the part of the visible rect which is 2791 // displaying our content is displaced by that amount. 2792 r.top = viewToContentYf(ri.top + getVisibleTitleHeightImpl()); 2793 r.right = viewToContentXf(ri.right); 2794 r.bottom = viewToContentYf(ri.bottom); 2795 } 2796 2797 static class ViewSizeData { 2798 int mWidth; 2799 int mHeight; 2800 float mHeightWidthRatio; 2801 int mActualViewHeight; 2802 int mTextWrapWidth; 2803 int mAnchorX; 2804 int mAnchorY; 2805 float mScale; 2806 boolean mIgnoreHeight; 2807 } 2808 2809 /** 2810 * Compute unzoomed width and height, and if they differ from the last 2811 * values we sent, send them to webkit (to be used as new viewport) 2812 * 2813 * @param force ensures that the message is sent to webkit even if the width 2814 * or height has not changed since the last message 2815 * 2816 * @return true if new values were sent 2817 */ 2818 boolean sendViewSizeZoom(boolean force) { 2819 if (mBlockWebkitViewMessages) return false; 2820 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2821 2822 int viewWidth = getViewWidth(); 2823 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2824 // This height could be fixed and be different from actual visible height. 2825 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2826 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2827 // Make the ratio more accurate than (newHeight / newWidth), since the 2828 // latter both are calculated and rounded. 2829 float heightWidthRatio = (float) viewHeight / viewWidth; 2830 /* 2831 * Because the native side may have already done a layout before the 2832 * View system was able to measure us, we have to send a height of 0 to 2833 * remove excess whitespace when we grow our width. This will trigger a 2834 * layout and a change in content size. This content size change will 2835 * mean that contentSizeChanged will either call this method directly or 2836 * indirectly from onSizeChanged. 2837 */ 2838 if (newWidth > mLastWidthSent && mWrapContent) { 2839 newHeight = 0; 2840 heightWidthRatio = 0; 2841 } 2842 // Actual visible content height. 2843 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2844 // Avoid sending another message if the dimensions have not changed. 2845 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2846 actualViewHeight != mLastActualHeightSent) { 2847 ViewSizeData data = new ViewSizeData(); 2848 data.mWidth = newWidth; 2849 data.mHeight = newHeight; 2850 data.mHeightWidthRatio = heightWidthRatio; 2851 data.mActualViewHeight = actualViewHeight; 2852 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2853 data.mScale = mZoomManager.getScale(); 2854 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2855 && !mHeightCanMeasure; 2856 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2857 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2858 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2859 mLastWidthSent = newWidth; 2860 mLastHeightSent = newHeight; 2861 mLastActualHeightSent = actualViewHeight; 2862 mZoomManager.clearDocumentAnchor(); 2863 return true; 2864 } 2865 return false; 2866 } 2867 2868 private int computeRealHorizontalScrollRange() { 2869 if (mDrawHistory) { 2870 return mHistoryWidth; 2871 } else { 2872 // to avoid rounding error caused unnecessary scrollbar, use floor 2873 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2874 } 2875 } 2876 2877 @Override 2878 protected int computeHorizontalScrollRange() { 2879 int range = computeRealHorizontalScrollRange(); 2880 2881 // Adjust reported range if overscrolled to compress the scroll bars 2882 final int scrollX = mScrollX; 2883 final int overscrollRight = computeMaxScrollX(); 2884 if (scrollX < 0) { 2885 range -= scrollX; 2886 } else if (scrollX > overscrollRight) { 2887 range += scrollX - overscrollRight; 2888 } 2889 2890 return range; 2891 } 2892 2893 @Override 2894 protected int computeHorizontalScrollOffset() { 2895 return Math.max(mScrollX, 0); 2896 } 2897 2898 private int computeRealVerticalScrollRange() { 2899 if (mDrawHistory) { 2900 return mHistoryHeight; 2901 } else { 2902 // to avoid rounding error caused unnecessary scrollbar, use floor 2903 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2904 } 2905 } 2906 2907 @Override 2908 protected int computeVerticalScrollRange() { 2909 int range = computeRealVerticalScrollRange(); 2910 2911 // Adjust reported range if overscrolled to compress the scroll bars 2912 final int scrollY = mScrollY; 2913 final int overscrollBottom = computeMaxScrollY(); 2914 if (scrollY < 0) { 2915 range -= scrollY; 2916 } else if (scrollY > overscrollBottom) { 2917 range += scrollY - overscrollBottom; 2918 } 2919 2920 return range; 2921 } 2922 2923 @Override 2924 protected int computeVerticalScrollOffset() { 2925 return Math.max(mScrollY - getTitleHeight(), 0); 2926 } 2927 2928 @Override 2929 protected int computeVerticalScrollExtent() { 2930 return getViewHeight(); 2931 } 2932 2933 /** @hide */ 2934 @Override 2935 protected void onDrawVerticalScrollBar(Canvas canvas, 2936 Drawable scrollBar, 2937 int l, int t, int r, int b) { 2938 if (mScrollY < 0) { 2939 t -= mScrollY; 2940 } 2941 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 2942 scrollBar.draw(canvas); 2943 } 2944 2945 @Override 2946 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2947 boolean clampedY) { 2948 // Special-case layer scrolling so that we do not trigger normal scroll 2949 // updating. 2950 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2951 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2952 mScrollingLayerRect.left = scrollX; 2953 mScrollingLayerRect.top = scrollY; 2954 invalidate(); 2955 return; 2956 } 2957 mInOverScrollMode = false; 2958 int maxX = computeMaxScrollX(); 2959 int maxY = computeMaxScrollY(); 2960 if (maxX == 0) { 2961 // do not over scroll x if the page just fits the screen 2962 scrollX = pinLocX(scrollX); 2963 } else if (scrollX < 0 || scrollX > maxX) { 2964 mInOverScrollMode = true; 2965 } 2966 if (scrollY < 0 || scrollY > maxY) { 2967 mInOverScrollMode = true; 2968 } 2969 2970 int oldX = mScrollX; 2971 int oldY = mScrollY; 2972 2973 super.scrollTo(scrollX, scrollY); 2974 2975 if (mOverScrollGlow != null) { 2976 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2977 } 2978 } 2979 2980 /** 2981 * Get the url for the current page. This is not always the same as the url 2982 * passed to WebViewClient.onPageStarted because although the load for 2983 * that url has begun, the current page may not have changed. 2984 * @return The url for the current page. 2985 */ 2986 public String getUrl() { 2987 checkThread(); 2988 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2989 return h != null ? h.getUrl() : null; 2990 } 2991 2992 /** 2993 * Get the original url for the current page. This is not always the same 2994 * as the url passed to WebViewClient.onPageStarted because although the 2995 * load for that url has begun, the current page may not have changed. 2996 * Also, there may have been redirects resulting in a different url to that 2997 * originally requested. 2998 * @return The url that was originally requested for the current page. 2999 */ 3000 public String getOriginalUrl() { 3001 checkThread(); 3002 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3003 return h != null ? h.getOriginalUrl() : null; 3004 } 3005 3006 /** 3007 * Get the title for the current page. This is the title of the current page 3008 * until WebViewClient.onReceivedTitle is called. 3009 * @return The title for the current page. 3010 */ 3011 public String getTitle() { 3012 checkThread(); 3013 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3014 return h != null ? h.getTitle() : null; 3015 } 3016 3017 /** 3018 * Get the favicon for the current page. This is the favicon of the current 3019 * page until WebViewClient.onReceivedIcon is called. 3020 * @return The favicon for the current page. 3021 */ 3022 public Bitmap getFavicon() { 3023 checkThread(); 3024 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3025 return h != null ? h.getFavicon() : null; 3026 } 3027 3028 /** 3029 * Get the touch icon url for the apple-touch-icon <link> element, or 3030 * a URL on this site's server pointing to the standard location of a 3031 * touch icon. 3032 * @hide 3033 */ 3034 public String getTouchIconUrl() { 3035 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3036 return h != null ? h.getTouchIconUrl() : null; 3037 } 3038 3039 /** 3040 * Get the progress for the current page. 3041 * @return The progress for the current page between 0 and 100. 3042 */ 3043 public int getProgress() { 3044 checkThread(); 3045 return mCallbackProxy.getProgress(); 3046 } 3047 3048 /** 3049 * @return the height of the HTML content. 3050 */ 3051 public int getContentHeight() { 3052 checkThread(); 3053 return mContentHeight; 3054 } 3055 3056 /** 3057 * @return the width of the HTML content. 3058 * @hide 3059 */ 3060 public int getContentWidth() { 3061 return mContentWidth; 3062 } 3063 3064 /** 3065 * @hide 3066 */ 3067 public int getPageBackgroundColor() { 3068 return nativeGetBackgroundColor(); 3069 } 3070 3071 /** 3072 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3073 * is a global requests, not restricted to just this webview. This can be 3074 * useful if the application has been paused. 3075 */ 3076 public void pauseTimers() { 3077 checkThread(); 3078 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3079 } 3080 3081 /** 3082 * Resume all layout, parsing, and JavaScript timers for all webviews. 3083 * This will resume dispatching all timers. 3084 */ 3085 public void resumeTimers() { 3086 checkThread(); 3087 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3088 } 3089 3090 /** 3091 * Call this to pause any extra processing associated with this WebView and 3092 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3093 * is taken offscreen, this could be called to reduce unnecessary CPU or 3094 * network traffic. When the WebView is again "active", call onResume(). 3095 * 3096 * Note that this differs from pauseTimers(), which affects all WebViews. 3097 */ 3098 public void onPause() { 3099 checkThread(); 3100 if (!mIsPaused) { 3101 mIsPaused = true; 3102 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3103 // We want to pause the current playing video when switching out 3104 // from the current WebView/tab. 3105 if (mHTML5VideoViewProxy != null) { 3106 mHTML5VideoViewProxy.pauseAndDispatch(); 3107 } 3108 } 3109 } 3110 3111 /** 3112 * Call this to resume a WebView after a previous call to onPause(). 3113 */ 3114 public void onResume() { 3115 checkThread(); 3116 if (mIsPaused) { 3117 mIsPaused = false; 3118 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3119 } 3120 } 3121 3122 /** 3123 * Returns true if the view is paused, meaning onPause() was called. Calling 3124 * onResume() sets the paused state back to false. 3125 * @hide 3126 */ 3127 public boolean isPaused() { 3128 return mIsPaused; 3129 } 3130 3131 /** 3132 * Call this to inform the view that memory is low so that it can 3133 * free any available memory. 3134 */ 3135 public void freeMemory() { 3136 checkThread(); 3137 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3138 } 3139 3140 /** 3141 * Clear the resource cache. Note that the cache is per-application, so 3142 * this will clear the cache for all WebViews used. 3143 * 3144 * @param includeDiskFiles If false, only the RAM cache is cleared. 3145 */ 3146 public void clearCache(boolean includeDiskFiles) { 3147 checkThread(); 3148 // Note: this really needs to be a static method as it clears cache for all 3149 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3150 // we can't make this static. 3151 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3152 includeDiskFiles ? 1 : 0, 0); 3153 } 3154 3155 /** 3156 * Make sure that clearing the form data removes the adapter from the 3157 * currently focused textfield if there is one. 3158 */ 3159 public void clearFormData() { 3160 checkThread(); 3161 if (inEditingMode()) { 3162 AutoCompleteAdapter adapter = null; 3163 mWebTextView.setAdapterCustom(adapter); 3164 } 3165 } 3166 3167 /** 3168 * Tell the WebView to clear its internal back/forward list. 3169 */ 3170 public void clearHistory() { 3171 checkThread(); 3172 mCallbackProxy.getBackForwardList().setClearPending(); 3173 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3174 } 3175 3176 /** 3177 * Clear the SSL preferences table stored in response to proceeding with SSL 3178 * certificate errors. 3179 */ 3180 public void clearSslPreferences() { 3181 checkThread(); 3182 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3183 } 3184 3185 /** 3186 * Return the WebBackForwardList for this WebView. This contains the 3187 * back/forward list for use in querying each item in the history stack. 3188 * This is a copy of the private WebBackForwardList so it contains only a 3189 * snapshot of the current state. Multiple calls to this method may return 3190 * different objects. The object returned from this method will not be 3191 * updated to reflect any new state. 3192 */ 3193 public WebBackForwardList copyBackForwardList() { 3194 checkThread(); 3195 return mCallbackProxy.getBackForwardList().clone(); 3196 } 3197 3198 /* 3199 * Highlight and scroll to the next occurance of String in findAll. 3200 * Wraps the page infinitely, and scrolls. Must be called after 3201 * calling findAll. 3202 * 3203 * @param forward Direction to search. 3204 */ 3205 public void findNext(boolean forward) { 3206 checkThread(); 3207 if (0 == mNativeClass) return; // client isn't initialized 3208 nativeFindNext(forward); 3209 } 3210 3211 /* 3212 * Find all instances of find on the page and highlight them. 3213 * @param find String to find. 3214 * @return int The number of occurances of the String "find" 3215 * that were found. 3216 */ 3217 public int findAll(String find) { 3218 checkThread(); 3219 if (0 == mNativeClass) return 0; // client isn't initialized 3220 int result = find != null ? nativeFindAll(find.toLowerCase(), 3221 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3222 invalidate(); 3223 mLastFind = find; 3224 return result; 3225 } 3226 3227 /** 3228 * Start an ActionMode for finding text in this WebView. Only works if this 3229 * WebView is attached to the view system. 3230 * @param text If non-null, will be the initial text to search for. 3231 * Otherwise, the last String searched for in this WebView will 3232 * be used to start. 3233 * @param showIme If true, show the IME, assuming the user will begin typing. 3234 * If false and text is non-null, perform a find all. 3235 * @return boolean True if the find dialog is shown, false otherwise. 3236 */ 3237 public boolean showFindDialog(String text, boolean showIme) { 3238 checkThread(); 3239 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3240 if (getParent() == null || startActionMode(callback) == null) { 3241 // Could not start the action mode, so end Find on page 3242 return false; 3243 } 3244 mFindCallback = callback; 3245 setFindIsUp(true); 3246 mFindCallback.setWebView(this); 3247 if (showIme) { 3248 mFindCallback.showSoftInput(); 3249 } else if (text != null) { 3250 mFindCallback.setText(text); 3251 mFindCallback.findAll(); 3252 return true; 3253 } 3254 if (text == null) { 3255 text = mLastFind; 3256 } 3257 if (text != null) { 3258 mFindCallback.setText(text); 3259 } 3260 return true; 3261 } 3262 3263 /** 3264 * Keep track of the find callback so that we can remove its titlebar if 3265 * necessary. 3266 */ 3267 private FindActionModeCallback mFindCallback; 3268 3269 /** 3270 * Toggle whether the find dialog is showing, for both native and Java. 3271 */ 3272 private void setFindIsUp(boolean isUp) { 3273 mFindIsUp = isUp; 3274 if (0 == mNativeClass) return; // client isn't initialized 3275 nativeSetFindIsUp(isUp); 3276 } 3277 3278 /** 3279 * Return the index of the currently highlighted match. 3280 */ 3281 int findIndex() { 3282 if (0 == mNativeClass) return -1; 3283 return nativeFindIndex(); 3284 } 3285 3286 // Used to know whether the find dialog is open. Affects whether 3287 // or not we draw the highlights for matches. 3288 private boolean mFindIsUp; 3289 3290 // Keep track of the last string sent, so we can search again when find is 3291 // reopened. 3292 private String mLastFind; 3293 3294 /** 3295 * Return the first substring consisting of the address of a physical 3296 * location. Currently, only addresses in the United States are detected, 3297 * and consist of: 3298 * - a house number 3299 * - a street name 3300 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3301 * - a city name 3302 * - a state or territory, either spelled out or two-letter abbr. 3303 * - an optional 5 digit or 9 digit zip code. 3304 * 3305 * All names must be correctly capitalized, and the zip code, if present, 3306 * must be valid for the state. The street type must be a standard USPS 3307 * spelling or abbreviation. The state or territory must also be spelled 3308 * or abbreviated using USPS standards. The house number may not exceed 3309 * five digits. 3310 * @param addr The string to search for addresses. 3311 * 3312 * @return the address, or if no address is found, return null. 3313 */ 3314 public static String findAddress(String addr) { 3315 checkThread(); 3316 return findAddress(addr, false); 3317 } 3318 3319 /** 3320 * @hide 3321 * Return the first substring consisting of the address of a physical 3322 * location. Currently, only addresses in the United States are detected, 3323 * and consist of: 3324 * - a house number 3325 * - a street name 3326 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3327 * - a city name 3328 * - a state or territory, either spelled out or two-letter abbr. 3329 * - an optional 5 digit or 9 digit zip code. 3330 * 3331 * Names are optionally capitalized, and the zip code, if present, 3332 * must be valid for the state. The street type must be a standard USPS 3333 * spelling or abbreviation. The state or territory must also be spelled 3334 * or abbreviated using USPS standards. The house number may not exceed 3335 * five digits. 3336 * @param addr The string to search for addresses. 3337 * @param caseInsensitive addr Set to true to make search ignore case. 3338 * 3339 * @return the address, or if no address is found, return null. 3340 */ 3341 public static String findAddress(String addr, boolean caseInsensitive) { 3342 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3343 } 3344 3345 /* 3346 * Clear the highlighting surrounding text matches created by findAll. 3347 */ 3348 public void clearMatches() { 3349 checkThread(); 3350 if (mNativeClass == 0) 3351 return; 3352 nativeSetFindIsEmpty(); 3353 invalidate(); 3354 } 3355 3356 /** 3357 * Called when the find ActionMode ends. 3358 */ 3359 void notifyFindDialogDismissed() { 3360 mFindCallback = null; 3361 if (mWebViewCore == null) { 3362 return; 3363 } 3364 clearMatches(); 3365 setFindIsUp(false); 3366 // Now that the dialog has been removed, ensure that we scroll to a 3367 // location that is not beyond the end of the page. 3368 pinScrollTo(mScrollX, mScrollY, false, 0); 3369 invalidate(); 3370 } 3371 3372 /** 3373 * Query the document to see if it contains any image references. The 3374 * message object will be dispatched with arg1 being set to 1 if images 3375 * were found and 0 if the document does not reference any images. 3376 * @param response The message that will be dispatched with the result. 3377 */ 3378 public void documentHasImages(Message response) { 3379 checkThread(); 3380 if (response == null) { 3381 return; 3382 } 3383 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3384 } 3385 3386 /** 3387 * Request the scroller to abort any ongoing animation 3388 * 3389 * @hide 3390 */ 3391 public void stopScroll() { 3392 mScroller.forceFinished(true); 3393 mLastVelocity = 0; 3394 } 3395 3396 @Override 3397 public void computeScroll() { 3398 if (mScroller.computeScrollOffset()) { 3399 int oldX = mScrollX; 3400 int oldY = mScrollY; 3401 int x = mScroller.getCurrX(); 3402 int y = mScroller.getCurrY(); 3403 invalidate(); // So we draw again 3404 3405 if (!mScroller.isFinished()) { 3406 int rangeX = computeMaxScrollX(); 3407 int rangeY = computeMaxScrollY(); 3408 int overflingDistance = mOverflingDistance; 3409 3410 // Use the layer's scroll data if needed. 3411 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3412 oldX = mScrollingLayerRect.left; 3413 oldY = mScrollingLayerRect.top; 3414 rangeX = mScrollingLayerRect.right; 3415 rangeY = mScrollingLayerRect.bottom; 3416 // No overscrolling for layers. 3417 overflingDistance = 0; 3418 } 3419 3420 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3421 rangeX, rangeY, 3422 overflingDistance, overflingDistance, false); 3423 3424 if (mOverScrollGlow != null) { 3425 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3426 } 3427 } else { 3428 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3429 mScrollX = x; 3430 mScrollY = y; 3431 } else { 3432 // Update the layer position instead of WebView. 3433 nativeScrollLayer(mScrollingLayer, x, y); 3434 mScrollingLayerRect.left = x; 3435 mScrollingLayerRect.top = y; 3436 } 3437 abortAnimation(); 3438 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3439 if (!mBlockWebkitViewMessages) { 3440 WebViewCore.resumePriority(); 3441 if (!mSelectingText) { 3442 WebViewCore.resumeUpdatePicture(mWebViewCore); 3443 } 3444 } 3445 if (oldX != mScrollX || oldY != mScrollY) { 3446 sendOurVisibleRect(); 3447 } 3448 } 3449 } else { 3450 super.computeScroll(); 3451 } 3452 } 3453 3454 private static int computeDuration(int dx, int dy) { 3455 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3456 int duration = distance * 1000 / STD_SPEED; 3457 return Math.min(duration, MAX_DURATION); 3458 } 3459 3460 // helper to pin the scrollBy parameters (already in view coordinates) 3461 // returns true if the scroll was changed 3462 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3463 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3464 } 3465 // helper to pin the scrollTo parameters (already in view coordinates) 3466 // returns true if the scroll was changed 3467 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3468 x = pinLocX(x); 3469 y = pinLocY(y); 3470 int dx = x - mScrollX; 3471 int dy = y - mScrollY; 3472 3473 if ((dx | dy) == 0) { 3474 return false; 3475 } 3476 abortAnimation(); 3477 if (animate) { 3478 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3479 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3480 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3481 awakenScrollBars(mScroller.getDuration()); 3482 invalidate(); 3483 } else { 3484 scrollTo(x, y); 3485 } 3486 return true; 3487 } 3488 3489 // Scale from content to view coordinates, and pin. 3490 // Also called by jni webview.cpp 3491 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3492 if (mDrawHistory) { 3493 // disallow WebView to change the scroll position as History Picture 3494 // is used in the view system. 3495 // TODO: as we switchOutDrawHistory when trackball or navigation 3496 // keys are hit, this should be safe. Right? 3497 return false; 3498 } 3499 cx = contentToViewDimension(cx); 3500 cy = contentToViewDimension(cy); 3501 if (mHeightCanMeasure) { 3502 // move our visible rect according to scroll request 3503 if (cy != 0) { 3504 Rect tempRect = new Rect(); 3505 calcOurVisibleRect(tempRect); 3506 tempRect.offset(cx, cy); 3507 requestRectangleOnScreen(tempRect); 3508 } 3509 // FIXME: We scroll horizontally no matter what because currently 3510 // ScrollView and ListView will not scroll horizontally. 3511 // FIXME: Why do we only scroll horizontally if there is no 3512 // vertical scroll? 3513// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3514 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3515 } else { 3516 return pinScrollBy(cx, cy, animate, 0); 3517 } 3518 } 3519 3520 /** 3521 * Called by CallbackProxy when the page starts loading. 3522 * @param url The URL of the page which has started loading. 3523 */ 3524 /* package */ void onPageStarted(String url) { 3525 // every time we start a new page, we want to reset the 3526 // WebView certificate: if the new site is secure, we 3527 // will reload it and get a new certificate set; 3528 // if the new site is not secure, the certificate must be 3529 // null, and that will be the case 3530 setCertificate(null); 3531 3532 // reset the flag since we set to true in if need after 3533 // loading is see onPageFinished(Url) 3534 mAccessibilityScriptInjected = false; 3535 } 3536 3537 /** 3538 * Called by CallbackProxy when the page finishes loading. 3539 * @param url The URL of the page which has finished loading. 3540 */ 3541 /* package */ void onPageFinished(String url) { 3542 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3543 // If the user is now on a different page, or has scrolled the page 3544 // past the point where the title bar is offscreen, ignore the 3545 // scroll request. 3546 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3547 && mScrollX == 0 && mScrollY == 0) { 3548 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3549 SLIDE_TITLE_DURATION); 3550 } 3551 mPageThatNeedsToSlideTitleBarOffScreen = null; 3552 } 3553 mZoomManager.onPageFinished(url); 3554 injectAccessibilityForUrl(url); 3555 } 3556 3557 /** 3558 * This method injects accessibility in the loaded document if accessibility 3559 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3560 * If no URL specific script is found or JavaScript is disabled we fallback to 3561 * the default {@link AccessibilityInjector} implementation. 3562 * </p> 3563 * If the URL has the "axs" paramter set to 1 it has already done the 3564 * script injection so we do nothing. If the parameter is set to 0 3565 * the URL opts out accessibility script injection so we fall back to 3566 * the default {@link AccessibilityInjector}. 3567 * </p> 3568 * Note: If the user has not opted-in the accessibility script injection no scripts 3569 * are injected rather the default {@link AccessibilityInjector} implementation 3570 * is used. 3571 * 3572 * @param url The URL loaded by this {@link WebView}. 3573 */ 3574 private void injectAccessibilityForUrl(String url) { 3575 if (mWebViewCore == null) { 3576 return; 3577 } 3578 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3579 3580 if (!accessibilityManager.isEnabled()) { 3581 // it is possible that accessibility was turned off between reloads 3582 ensureAccessibilityScriptInjectorInstance(false); 3583 return; 3584 } 3585 3586 if (!getSettings().getJavaScriptEnabled()) { 3587 // no JS so we fallback to the basic buil-in support 3588 ensureAccessibilityScriptInjectorInstance(true); 3589 return; 3590 } 3591 3592 // check the URL "axs" parameter to choose appropriate action 3593 int axsParameterValue = getAxsUrlParameterValue(url); 3594 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3595 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3596 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3597 if (onDeviceScriptInjectionEnabled) { 3598 ensureAccessibilityScriptInjectorInstance(false); 3599 // neither script injected nor script injection opted out => we inject 3600 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3601 // TODO: Set this flag after successfull script injection. Maybe upon injection 3602 // the chooser should update the meta tag and we check it to declare success 3603 mAccessibilityScriptInjected = true; 3604 } else { 3605 // injection disabled so we fallback to the basic built-in support 3606 ensureAccessibilityScriptInjectorInstance(true); 3607 } 3608 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3609 // injection opted out so we fallback to the basic buil-in support 3610 ensureAccessibilityScriptInjectorInstance(true); 3611 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3612 ensureAccessibilityScriptInjectorInstance(false); 3613 // the URL provides accessibility but we still need to add our generic script 3614 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3615 } else { 3616 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3617 } 3618 } 3619 3620 /** 3621 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3622 * 3623 * @param present True to ensure an insance, false to ensure no instance. 3624 */ 3625 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3626 if (present) { 3627 if (mAccessibilityInjector == null) { 3628 mAccessibilityInjector = new AccessibilityInjector(this); 3629 } 3630 } else { 3631 mAccessibilityInjector = null; 3632 } 3633 } 3634 3635 /** 3636 * Gets the "axs" URL parameter value. 3637 * 3638 * @param url A url to fetch the paramter from. 3639 * @return The parameter value if such, -1 otherwise. 3640 */ 3641 private int getAxsUrlParameterValue(String url) { 3642 if (mMatchAxsUrlParameterPattern == null) { 3643 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3644 } 3645 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3646 if (matcher.find()) { 3647 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3648 return Integer.parseInt(keyValuePair.split("=")[1]); 3649 } 3650 return -1; 3651 } 3652 3653 /** 3654 * The URL of a page that sent a message to scroll the title bar off screen. 3655 * 3656 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3657 * title bar off the screen. Sometimes, the scroll position is set before 3658 * the page finishes loading. Rather than scrolling while the page is still 3659 * loading, keep track of the URL and new scroll position so we can perform 3660 * the scroll once the page finishes loading. 3661 */ 3662 private String mPageThatNeedsToSlideTitleBarOffScreen; 3663 3664 /** 3665 * The destination Y scroll position to be used when the page finishes 3666 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3667 */ 3668 private int mYDistanceToSlideTitleOffScreen; 3669 3670 // scale from content to view coordinates, and pin 3671 // return true if pin caused the final x/y different than the request cx/cy, 3672 // and a future scroll may reach the request cx/cy after our size has 3673 // changed 3674 // return false if the view scroll to the exact position as it is requested, 3675 // where negative numbers are taken to mean 0 3676 private boolean setContentScrollTo(int cx, int cy) { 3677 if (mDrawHistory) { 3678 // disallow WebView to change the scroll position as History Picture 3679 // is used in the view system. 3680 // One known case where this is called is that WebCore tries to 3681 // restore the scroll position. As history Picture already uses the 3682 // saved scroll position, it is ok to skip this. 3683 return false; 3684 } 3685 int vx; 3686 int vy; 3687 if ((cx | cy) == 0) { 3688 // If the page is being scrolled to (0,0), do not add in the title 3689 // bar's height, and simply scroll to (0,0). (The only other work 3690 // in contentToView_ is to multiply, so this would not change 0.) 3691 vx = 0; 3692 vy = 0; 3693 } else { 3694 vx = contentToViewX(cx); 3695 vy = contentToViewY(cy); 3696 } 3697// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3698// vx + " " + vy + "]"); 3699 // Some mobile sites attempt to scroll the title bar off the page by 3700 // scrolling to (0,1). If we are at the top left corner of the 3701 // page, assume this is an attempt to scroll off the title bar, and 3702 // animate the title bar off screen slowly enough that the user can see 3703 // it. 3704 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3705 && mTitleBar != null) { 3706 // FIXME: 100 should be defined somewhere as our max progress. 3707 if (getProgress() < 100) { 3708 // Wait to scroll the title bar off screen until the page has 3709 // finished loading. Keep track of the URL and the destination 3710 // Y position 3711 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3712 mYDistanceToSlideTitleOffScreen = vy; 3713 } else { 3714 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3715 } 3716 // Since we are animating, we have not yet reached the desired 3717 // scroll position. Do not return true to request another attempt 3718 return false; 3719 } 3720 pinScrollTo(vx, vy, false, 0); 3721 // If the request was to scroll to a negative coordinate, treat it as if 3722 // it was a request to scroll to 0 3723 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3724 return true; 3725 } else { 3726 return false; 3727 } 3728 } 3729 3730 // scale from content to view coordinates, and pin 3731 private void spawnContentScrollTo(int cx, int cy) { 3732 if (mDrawHistory) { 3733 // disallow WebView to change the scroll position as History Picture 3734 // is used in the view system. 3735 return; 3736 } 3737 int vx = contentToViewX(cx); 3738 int vy = contentToViewY(cy); 3739 pinScrollTo(vx, vy, true, 0); 3740 } 3741 3742 /** 3743 * These are from webkit, and are in content coordinate system (unzoomed) 3744 */ 3745 private void contentSizeChanged(boolean updateLayout) { 3746 // suppress 0,0 since we usually see real dimensions soon after 3747 // this avoids drawing the prev content in a funny place. If we find a 3748 // way to consolidate these notifications, this check may become 3749 // obsolete 3750 if ((mContentWidth | mContentHeight) == 0) { 3751 return; 3752 } 3753 3754 if (mHeightCanMeasure) { 3755 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3756 || updateLayout) { 3757 requestLayout(); 3758 } 3759 } else if (mWidthCanMeasure) { 3760 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3761 || updateLayout) { 3762 requestLayout(); 3763 } 3764 } else { 3765 // If we don't request a layout, try to send our view size to the 3766 // native side to ensure that WebCore has the correct dimensions. 3767 sendViewSizeZoom(false); 3768 } 3769 } 3770 3771 /** 3772 * Set the WebViewClient that will receive various notifications and 3773 * requests. This will replace the current handler. 3774 * @param client An implementation of WebViewClient. 3775 */ 3776 public void setWebViewClient(WebViewClient client) { 3777 checkThread(); 3778 mCallbackProxy.setWebViewClient(client); 3779 } 3780 3781 /** 3782 * Gets the WebViewClient 3783 * @return the current WebViewClient instance. 3784 * 3785 *@hide pending API council approval. 3786 */ 3787 public WebViewClient getWebViewClient() { 3788 return mCallbackProxy.getWebViewClient(); 3789 } 3790 3791 /** 3792 * Register the interface to be used when content can not be handled by 3793 * the rendering engine, and should be downloaded instead. This will replace 3794 * the current handler. 3795 * @param listener An implementation of DownloadListener. 3796 */ 3797 public void setDownloadListener(DownloadListener listener) { 3798 checkThread(); 3799 mCallbackProxy.setDownloadListener(listener); 3800 } 3801 3802 /** 3803 * Set the chrome handler. This is an implementation of WebChromeClient for 3804 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3805 * This will replace the current handler. 3806 * @param client An implementation of WebChromeClient. 3807 */ 3808 public void setWebChromeClient(WebChromeClient client) { 3809 checkThread(); 3810 mCallbackProxy.setWebChromeClient(client); 3811 } 3812 3813 /** 3814 * Gets the chrome handler. 3815 * @return the current WebChromeClient instance. 3816 * 3817 * @hide API council approval. 3818 */ 3819 public WebChromeClient getWebChromeClient() { 3820 return mCallbackProxy.getWebChromeClient(); 3821 } 3822 3823 /** 3824 * Set the back/forward list client. This is an implementation of 3825 * WebBackForwardListClient for handling new items and changes in the 3826 * history index. 3827 * @param client An implementation of WebBackForwardListClient. 3828 * {@hide} 3829 */ 3830 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3831 mCallbackProxy.setWebBackForwardListClient(client); 3832 } 3833 3834 /** 3835 * Gets the WebBackForwardListClient. 3836 * {@hide} 3837 */ 3838 public WebBackForwardListClient getWebBackForwardListClient() { 3839 return mCallbackProxy.getWebBackForwardListClient(); 3840 } 3841 3842 /** 3843 * Set the Picture listener. This is an interface used to receive 3844 * notifications of a new Picture. 3845 * @param listener An implementation of WebView.PictureListener. 3846 * @deprecated This method is now obsolete. 3847 */ 3848 @Deprecated 3849 public void setPictureListener(PictureListener listener) { 3850 checkThread(); 3851 mPictureListener = listener; 3852 } 3853 3854 /** 3855 * {@hide} 3856 */ 3857 /* FIXME: Debug only! Remove for SDK! */ 3858 public void externalRepresentation(Message callback) { 3859 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3860 } 3861 3862 /** 3863 * {@hide} 3864 */ 3865 /* FIXME: Debug only! Remove for SDK! */ 3866 public void documentAsText(Message callback) { 3867 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3868 } 3869 3870 /** 3871 * Use this function to bind an object to JavaScript so that the 3872 * methods can be accessed from JavaScript. 3873 * <p><strong>IMPORTANT:</strong> 3874 * <ul> 3875 * <li> Using addJavascriptInterface() allows JavaScript to control your 3876 * application. This can be a very useful feature or a dangerous security 3877 * issue. When the HTML in the WebView is untrustworthy (for example, part 3878 * or all of the HTML is provided by some person or process), then an 3879 * attacker could inject HTML that will execute your code and possibly any 3880 * code of the attacker's choosing.<br> 3881 * Do not use addJavascriptInterface() unless all of the HTML in this 3882 * WebView was written by you.</li> 3883 * <li> The Java object that is bound runs in another thread and not in 3884 * the thread that it was constructed in.</li> 3885 * </ul></p> 3886 * @param obj The class instance to bind to JavaScript, null instances are 3887 * ignored. 3888 * @param interfaceName The name to used to expose the instance in 3889 * JavaScript. 3890 */ 3891 public void addJavascriptInterface(Object obj, String interfaceName) { 3892 checkThread(); 3893 if (obj == null) { 3894 return; 3895 } 3896 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3897 arg.mObject = obj; 3898 arg.mInterfaceName = interfaceName; 3899 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3900 } 3901 3902 /** 3903 * Removes a previously added JavaScript interface with the given name. 3904 * @param interfaceName The name of the interface to remove. 3905 */ 3906 public void removeJavascriptInterface(String interfaceName) { 3907 checkThread(); 3908 if (mWebViewCore != null) { 3909 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3910 arg.mInterfaceName = interfaceName; 3911 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3912 } 3913 } 3914 3915 /** 3916 * Return the WebSettings object used to control the settings for this 3917 * WebView. 3918 * @return A WebSettings object that can be used to control this WebView's 3919 * settings. 3920 */ 3921 public WebSettings getSettings() { 3922 checkThread(); 3923 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3924 } 3925 3926 /** 3927 * Return the list of currently loaded plugins. 3928 * @return The list of currently loaded plugins. 3929 * 3930 * @hide 3931 * @deprecated This was used for Gears, which has been deprecated. 3932 */ 3933 @Deprecated 3934 public static synchronized PluginList getPluginList() { 3935 checkThread(); 3936 return new PluginList(); 3937 } 3938 3939 /** 3940 * @hide 3941 * @deprecated This was used for Gears, which has been deprecated. 3942 */ 3943 @Deprecated 3944 public void refreshPlugins(boolean reloadOpenPages) { 3945 checkThread(); 3946 } 3947 3948 //------------------------------------------------------------------------- 3949 // Override View methods 3950 //------------------------------------------------------------------------- 3951 3952 @Override 3953 protected void finalize() throws Throwable { 3954 try { 3955 destroyImpl(); 3956 } finally { 3957 super.finalize(); 3958 } 3959 } 3960 3961 @Override 3962 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3963 if (child == mTitleBar) { 3964 // When drawing the title bar, move it horizontally to always show 3965 // at the top of the WebView. 3966 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3967 int newTop = 0; 3968 if (mTitleGravity == Gravity.NO_GRAVITY) { 3969 newTop = Math.min(0, mScrollY); 3970 } else if (mTitleGravity == Gravity.TOP) { 3971 newTop = mScrollY; 3972 } 3973 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3974 mTitleBar.setTop(newTop); 3975 } 3976 return super.drawChild(canvas, child, drawingTime); 3977 } 3978 3979 private void drawContent(Canvas canvas) { 3980 // Update the buttons in the picture, so when we draw the picture 3981 // to the screen, they are in the correct state. 3982 // Tell the native side if user is a) touching the screen, 3983 // b) pressing the trackball down, or c) pressing the enter key 3984 // If the cursor is on a button, we need to draw it in the pressed 3985 // state. 3986 // If mNativeClass is 0, we should not reach here, so we do not 3987 // need to check it again. 3988 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3989 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3990 || mTrackballDown || mGotCenterDown, false); 3991 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3992 } 3993 3994 /** 3995 * Draw the background when beyond bounds 3996 * @param canvas Canvas to draw into 3997 */ 3998 private void drawOverScrollBackground(Canvas canvas) { 3999 if (mOverScrollBackground == null) { 4000 mOverScrollBackground = new Paint(); 4001 Bitmap bm = BitmapFactory.decodeResource( 4002 mContext.getResources(), 4003 com.android.internal.R.drawable.status_bar_background); 4004 mOverScrollBackground.setShader(new BitmapShader(bm, 4005 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4006 mOverScrollBorder = new Paint(); 4007 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4008 mOverScrollBorder.setStrokeWidth(0); 4009 mOverScrollBorder.setColor(0xffbbbbbb); 4010 } 4011 4012 int top = 0; 4013 int right = computeRealHorizontalScrollRange(); 4014 int bottom = top + computeRealVerticalScrollRange(); 4015 // first draw the background and anchor to the top of the view 4016 canvas.save(); 4017 canvas.translate(mScrollX, mScrollY); 4018 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4019 - mScrollY, Region.Op.DIFFERENCE); 4020 canvas.drawPaint(mOverScrollBackground); 4021 canvas.restore(); 4022 // then draw the border 4023 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4024 // next clip the region for the content 4025 canvas.clipRect(0, top, right, bottom); 4026 } 4027 4028 @Override 4029 protected void onDraw(Canvas canvas) { 4030 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 4031 if (mNativeClass == 0) { 4032 return; 4033 } 4034 4035 // if both mContentWidth and mContentHeight are 0, it means there is no 4036 // valid Picture passed to WebView yet. This can happen when WebView 4037 // just starts. Draw the background and return. 4038 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4039 canvas.drawColor(mBackgroundColor); 4040 return; 4041 } 4042 4043 if (canvas.isHardwareAccelerated()) { 4044 mZoomManager.setHardwareAccelerated(); 4045 } 4046 4047 int saveCount = canvas.save(); 4048 if (mInOverScrollMode && !getSettings() 4049 .getUseWebViewBackgroundForOverscrollBackground()) { 4050 drawOverScrollBackground(canvas); 4051 } 4052 if (mTitleBar != null) { 4053 canvas.translate(0, getTitleHeight()); 4054 } 4055 drawContent(canvas); 4056 canvas.restoreToCount(saveCount); 4057 4058 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4059 invalidate(); 4060 } 4061 if (inEditingMode()) { 4062 mWebTextView.onDrawSubstitute(); 4063 } 4064 mWebViewCore.signalRepaintDone(); 4065 4066 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4067 invalidate(); 4068 } 4069 4070 // paint the highlight in the end 4071 if (!mTouchHighlightRegion.isEmpty()) { 4072 if (mTouchHightlightPaint == null) { 4073 mTouchHightlightPaint = new Paint(); 4074 mTouchHightlightPaint.setColor(mHightlightColor); 4075 mTouchHightlightPaint.setAntiAlias(true); 4076 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 4077 TOUCH_HIGHLIGHT_ARC)); 4078 } 4079 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 4080 mTouchHightlightPaint); 4081 } 4082 if (DEBUG_TOUCH_HIGHLIGHT) { 4083 if (getSettings().getNavDump()) { 4084 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4085 if (mTouchCrossHairColor == null) { 4086 mTouchCrossHairColor = new Paint(); 4087 mTouchCrossHairColor.setColor(Color.RED); 4088 } 4089 canvas.drawLine(mTouchHighlightX - mNavSlop, 4090 mTouchHighlightY - mNavSlop, mTouchHighlightX 4091 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4092 + 1, mTouchCrossHairColor); 4093 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4094 mTouchHighlightY - mNavSlop, mTouchHighlightX 4095 - mNavSlop, 4096 mTouchHighlightY + mNavSlop + 1, 4097 mTouchCrossHairColor); 4098 } 4099 } 4100 } 4101 } 4102 4103 private void removeTouchHighlight(boolean removePendingMessage) { 4104 if (removePendingMessage) { 4105 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4106 } 4107 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 4108 } 4109 4110 @Override 4111 public void setLayoutParams(ViewGroup.LayoutParams params) { 4112 if (params.height == LayoutParams.WRAP_CONTENT) { 4113 mWrapContent = true; 4114 } 4115 super.setLayoutParams(params); 4116 } 4117 4118 @Override 4119 public boolean performLongClick() { 4120 // performLongClick() is the result of a delayed message. If we switch 4121 // to windows overview, the WebView will be temporarily removed from the 4122 // view system. In that case, do nothing. 4123 if (getParent() == null) return false; 4124 4125 // A multi-finger gesture can look like a long press; make sure we don't take 4126 // long press actions if we're scaling. 4127 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4128 if (detector != null && detector.isInProgress()) { 4129 return false; 4130 } 4131 4132 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4133 // Send the click so that the textfield is in focus 4134 centerKeyPressOnTextField(); 4135 rebuildWebTextView(); 4136 } else { 4137 clearTextEntry(); 4138 } 4139 if (inEditingMode()) { 4140 // Since we just called rebuildWebTextView, the layout is not set 4141 // properly. Update it so it can correctly find the word to select. 4142 mWebTextView.ensureLayout(); 4143 // Provide a touch down event to WebTextView, which will allow it 4144 // to store the location to use in performLongClick. 4145 AbsoluteLayout.LayoutParams params 4146 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4147 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4148 mLastTouchTime, MotionEvent.ACTION_DOWN, 4149 mLastTouchX - params.x + mScrollX, 4150 mLastTouchY - params.y + mScrollY, 0); 4151 mWebTextView.dispatchTouchEvent(fake); 4152 return mWebTextView.performLongClick(); 4153 } 4154 if (mSelectingText) return false; // long click does nothing on selection 4155 /* if long click brings up a context menu, the super function 4156 * returns true and we're done. Otherwise, nothing happened when 4157 * the user clicked. */ 4158 if (super.performLongClick()) { 4159 return true; 4160 } 4161 /* In the case where the application hasn't already handled the long 4162 * click action, look for a word under the click. If one is found, 4163 * animate the text selection into view. 4164 * FIXME: no animation code yet */ 4165 return selectText(); 4166 } 4167 4168 /** 4169 * Select the word at the last click point. 4170 * 4171 * @hide pending API council approval 4172 */ 4173 public boolean selectText() { 4174 int x = viewToContentX(mLastTouchX + mScrollX); 4175 int y = viewToContentY(mLastTouchY + mScrollY); 4176 return selectText(x, y); 4177 } 4178 4179 /** 4180 * Select the word at the indicated content coordinates. 4181 */ 4182 boolean selectText(int x, int y) { 4183 if (!setUpSelect(true, x, y)) { 4184 return false; 4185 } 4186 nativeSetExtendSelection(); 4187 mDrawSelectionPointer = false; 4188 mSelectionStarted = true; 4189 mTouchMode = TOUCH_DRAG_MODE; 4190 return true; 4191 } 4192 4193 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4194 4195 @Override 4196 protected void onConfigurationChanged(Configuration newConfig) { 4197 if (mSelectingText && mOrientation != newConfig.orientation) { 4198 selectionDone(); 4199 } 4200 mOrientation = newConfig.orientation; 4201 } 4202 4203 /** 4204 * Keep track of the Callback so we can end its ActionMode or remove its 4205 * titlebar. 4206 */ 4207 private SelectActionModeCallback mSelectCallback; 4208 4209 // These values are possible options for didUpdateWebTextViewDimensions. 4210 private static final int FULLY_ON_SCREEN = 0; 4211 private static final int INTERSECTS_SCREEN = 1; 4212 private static final int ANYWHERE = 2; 4213 4214 /** 4215 * Check to see if the focused textfield/textarea is still on screen. If it 4216 * is, update the the dimensions and location of WebTextView. Otherwise, 4217 * remove the WebTextView. Should be called when the zoom level changes. 4218 * @param intersection How to determine whether the textfield/textarea is 4219 * still on screen. 4220 * @return boolean True if the textfield/textarea is still on screen and the 4221 * dimensions/location of WebTextView have been updated. 4222 */ 4223 private boolean didUpdateWebTextViewDimensions(int intersection) { 4224 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4225 Rect vBox = contentToViewRect(contentBounds); 4226 Rect visibleRect = new Rect(); 4227 calcOurVisibleRect(visibleRect); 4228 // If the textfield is on screen, place the WebTextView in 4229 // its new place, accounting for our new scroll/zoom values, 4230 // and adjust its textsize. 4231 boolean onScreen; 4232 switch (intersection) { 4233 case FULLY_ON_SCREEN: 4234 onScreen = visibleRect.contains(vBox); 4235 break; 4236 case INTERSECTS_SCREEN: 4237 onScreen = Rect.intersects(visibleRect, vBox); 4238 break; 4239 case ANYWHERE: 4240 onScreen = true; 4241 break; 4242 default: 4243 throw new AssertionError( 4244 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4245 } 4246 if (onScreen) { 4247 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4248 vBox.height()); 4249 mWebTextView.updateTextSize(); 4250 updateWebTextViewPadding(); 4251 return true; 4252 } else { 4253 // The textfield is now off screen. The user probably 4254 // was not zooming to see the textfield better. Remove 4255 // the WebTextView. If the user types a key, and the 4256 // textfield is still in focus, we will reconstruct 4257 // the WebTextView and scroll it back on screen. 4258 mWebTextView.remove(); 4259 return false; 4260 } 4261 } 4262 4263 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4264 boolean isPictureAfterFirstLayout) { 4265 if (mNativeClass == 0) 4266 return; 4267 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4268 isPictureAfterFirstLayout); 4269 if (mHTML5VideoViewProxy != null) { 4270 mHTML5VideoViewProxy.setBaseLayer(layer); 4271 } 4272 } 4273 4274 int getBaseLayer() { 4275 return nativeGetBaseLayer(); 4276 } 4277 4278 private void onZoomAnimationStart() { 4279 // If it is in password mode, turn it off so it does not draw misplaced. 4280 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4281 mWebTextView.setInPassword(false); 4282 } 4283 } 4284 4285 private void onZoomAnimationEnd() { 4286 // adjust the edit text view if needed 4287 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4288 && nativeFocusCandidateIsPassword()) { 4289 // If it is a password field, start drawing the WebTextView once 4290 // again. 4291 mWebTextView.setInPassword(true); 4292 } 4293 } 4294 4295 void onFixedLengthZoomAnimationStart() { 4296 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4297 onZoomAnimationStart(); 4298 } 4299 4300 void onFixedLengthZoomAnimationEnd() { 4301 if (!mBlockWebkitViewMessages && !mSelectingText) { 4302 WebViewCore.resumeUpdatePicture(mWebViewCore); 4303 } 4304 onZoomAnimationEnd(); 4305 } 4306 4307 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4308 Paint.DITHER_FLAG | 4309 Paint.SUBPIXEL_TEXT_FLAG; 4310 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4311 Paint.DITHER_FLAG; 4312 4313 private final DrawFilter mZoomFilter = 4314 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4315 // If we need to trade better quality for speed, set mScrollFilter to null 4316 private final DrawFilter mScrollFilter = 4317 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4318 4319 private void drawCoreAndCursorRing(Canvas canvas, int color, 4320 boolean drawCursorRing) { 4321 if (mDrawHistory) { 4322 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4323 canvas.drawPicture(mHistoryPicture); 4324 return; 4325 } 4326 if (mNativeClass == 0) return; 4327 4328 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4329 boolean animateScroll = ((!mScroller.isFinished() 4330 || mVelocityTracker != null) 4331 && (mTouchMode != TOUCH_DRAG_MODE || 4332 mHeldMotionless != MOTIONLESS_TRUE)) 4333 || mDeferTouchMode == TOUCH_DRAG_MODE; 4334 if (mTouchMode == TOUCH_DRAG_MODE) { 4335 if (mHeldMotionless == MOTIONLESS_PENDING) { 4336 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4337 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4338 mHeldMotionless = MOTIONLESS_FALSE; 4339 } 4340 if (mHeldMotionless == MOTIONLESS_FALSE) { 4341 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4342 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4343 mHeldMotionless = MOTIONLESS_PENDING; 4344 } 4345 } 4346 if (animateZoom) { 4347 mZoomManager.animateZoom(canvas); 4348 } else if (!canvas.isHardwareAccelerated()) { 4349 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4350 } 4351 4352 boolean UIAnimationsRunning = false; 4353 // Currently for each draw we compute the animation values; 4354 // We may in the future decide to do that independently. 4355 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4356 UIAnimationsRunning = true; 4357 // If we have unfinished (or unstarted) animations, 4358 // we ask for a repaint. We only need to do this in software 4359 // rendering (with hardware rendering we already have a different 4360 // method of requesting a repaint) 4361 if (!canvas.isHardwareAccelerated()) 4362 invalidate(); 4363 } 4364 4365 // decide which adornments to draw 4366 int extras = DRAW_EXTRAS_NONE; 4367 if (mFindIsUp) { 4368 extras = DRAW_EXTRAS_FIND; 4369 } else if (mSelectingText) { 4370 extras = DRAW_EXTRAS_SELECTION; 4371 nativeSetSelectionPointer(mDrawSelectionPointer, 4372 mZoomManager.getInvScale(), 4373 mSelectX, mSelectY - getTitleHeight()); 4374 } else if (drawCursorRing) { 4375 extras = DRAW_EXTRAS_CURSOR_RING; 4376 } 4377 if (DebugFlags.WEB_VIEW) { 4378 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4379 + " mSelectingText=" + mSelectingText 4380 + " nativePageShouldHandleShiftAndArrows()=" 4381 + nativePageShouldHandleShiftAndArrows() 4382 + " animateZoom=" + animateZoom 4383 + " extras=" + extras); 4384 } 4385 4386 if (canvas.isHardwareAccelerated()) { 4387 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4388 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4389 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4390 } else { 4391 DrawFilter df = null; 4392 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4393 df = mZoomFilter; 4394 } else if (animateScroll) { 4395 df = mScrollFilter; 4396 } 4397 canvas.setDrawFilter(df); 4398 // XXX: Revisit splitting content. Right now it causes a 4399 // synchronization problem with layers. 4400 int content = nativeDraw(canvas, color, extras, false); 4401 canvas.setDrawFilter(null); 4402 if (!mBlockWebkitViewMessages && content != 0) { 4403 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4404 } 4405 } 4406 4407 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4408 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4409 mTouchMode = TOUCH_SHORTPRESS_MODE; 4410 } 4411 } 4412 if (mFocusSizeChanged) { 4413 mFocusSizeChanged = false; 4414 // If we are zooming, this will get handled above, when the zoom 4415 // finishes. We also do not need to do this unless the WebTextView 4416 // is showing. 4417 if (!animateZoom && inEditingMode()) { 4418 didUpdateWebTextViewDimensions(ANYWHERE); 4419 } 4420 } 4421 } 4422 4423 // draw history 4424 private boolean mDrawHistory = false; 4425 private Picture mHistoryPicture = null; 4426 private int mHistoryWidth = 0; 4427 private int mHistoryHeight = 0; 4428 4429 // Only check the flag, can be called from WebCore thread 4430 boolean drawHistory() { 4431 return mDrawHistory; 4432 } 4433 4434 int getHistoryPictureWidth() { 4435 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4436 } 4437 4438 // Should only be called in UI thread 4439 void switchOutDrawHistory() { 4440 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4441 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4442 mDrawHistory = false; 4443 mHistoryPicture = null; 4444 invalidate(); 4445 int oldScrollX = mScrollX; 4446 int oldScrollY = mScrollY; 4447 mScrollX = pinLocX(mScrollX); 4448 mScrollY = pinLocY(mScrollY); 4449 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4450 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4451 } else { 4452 sendOurVisibleRect(); 4453 } 4454 } 4455 } 4456 4457 WebViewCore.CursorData cursorData() { 4458 WebViewCore.CursorData result = cursorDataNoPosition(); 4459 Point position = nativeCursorPosition(); 4460 result.mX = position.x; 4461 result.mY = position.y; 4462 return result; 4463 } 4464 4465 WebViewCore.CursorData cursorDataNoPosition() { 4466 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4467 result.mMoveGeneration = nativeMoveGeneration(); 4468 result.mFrame = nativeCursorFramePointer(); 4469 return result; 4470 } 4471 4472 /** 4473 * Delete text from start to end in the focused textfield. If there is no 4474 * focus, or if start == end, silently fail. If start and end are out of 4475 * order, swap them. 4476 * @param start Beginning of selection to delete. 4477 * @param end End of selection to delete. 4478 */ 4479 /* package */ void deleteSelection(int start, int end) { 4480 mTextGeneration++; 4481 WebViewCore.TextSelectionData data 4482 = new WebViewCore.TextSelectionData(start, end); 4483 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4484 data); 4485 } 4486 4487 /** 4488 * Set the selection to (start, end) in the focused textfield. If start and 4489 * end are out of order, swap them. 4490 * @param start Beginning of selection. 4491 * @param end End of selection. 4492 */ 4493 /* package */ void setSelection(int start, int end) { 4494 if (mWebViewCore != null) { 4495 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4496 } 4497 } 4498 4499 @Override 4500 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4501 InputConnection connection = super.onCreateInputConnection(outAttrs); 4502 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4503 return connection; 4504 } 4505 4506 /** 4507 * Called in response to a message from webkit telling us that the soft 4508 * keyboard should be launched. 4509 */ 4510 private void displaySoftKeyboard(boolean isTextView) { 4511 InputMethodManager imm = (InputMethodManager) 4512 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4513 4514 // bring it back to the default level scale so that user can enter text 4515 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4516 if (zoom) { 4517 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4518 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4519 } 4520 if (isTextView) { 4521 rebuildWebTextView(); 4522 if (inEditingMode()) { 4523 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4524 if (zoom) { 4525 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4526 } 4527 return; 4528 } 4529 } 4530 // Used by plugins and contentEditable. 4531 // Also used if the navigation cache is out of date, and 4532 // does not recognize that a textfield is in focus. In that 4533 // case, use WebView as the targeted view. 4534 // see http://b/issue?id=2457459 4535 imm.showSoftInput(this, 0); 4536 } 4537 4538 // Called by WebKit to instruct the UI to hide the keyboard 4539 private void hideSoftKeyboard() { 4540 InputMethodManager imm = InputMethodManager.peekInstance(); 4541 if (imm != null && (imm.isActive(this) 4542 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4543 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4544 } 4545 } 4546 4547 /* 4548 * This method checks the current focus and cursor and potentially rebuilds 4549 * mWebTextView to have the appropriate properties, such as password, 4550 * multiline, and what text it contains. It also removes it if necessary. 4551 */ 4552 /* package */ void rebuildWebTextView() { 4553 // If the WebView does not have focus, do nothing until it gains focus. 4554 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4555 return; 4556 } 4557 boolean alreadyThere = inEditingMode(); 4558 // inEditingMode can only return true if mWebTextView is non-null, 4559 // so we can safely call remove() if (alreadyThere) 4560 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4561 if (alreadyThere) { 4562 mWebTextView.remove(); 4563 } 4564 return; 4565 } 4566 // At this point, we know we have found an input field, so go ahead 4567 // and create the WebTextView if necessary. 4568 if (mWebTextView == null) { 4569 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4570 // Initialize our generation number. 4571 mTextGeneration = 0; 4572 } 4573 mWebTextView.updateTextSize(); 4574 Rect visibleRect = new Rect(); 4575 calcOurContentVisibleRect(visibleRect); 4576 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4577 // should be in content coordinates. 4578 Rect bounds = nativeFocusCandidateNodeBounds(); 4579 Rect vBox = contentToViewRect(bounds); 4580 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4581 if (!Rect.intersects(bounds, visibleRect)) { 4582 revealSelection(); 4583 } 4584 String text = nativeFocusCandidateText(); 4585 int nodePointer = nativeFocusCandidatePointer(); 4586 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4587 // It is possible that we have the same textfield, but it has moved, 4588 // i.e. In the case of opening/closing the screen. 4589 // In that case, we need to set the dimensions, but not the other 4590 // aspects. 4591 // If the text has been changed by webkit, update it. However, if 4592 // there has been more UI text input, ignore it. We will receive 4593 // another update when that text is recognized. 4594 if (text != null && !text.equals(mWebTextView.getText().toString()) 4595 && nativeTextGeneration() == mTextGeneration) { 4596 mWebTextView.setTextAndKeepSelection(text); 4597 } 4598 } else { 4599 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4600 Gravity.RIGHT : Gravity.NO_GRAVITY); 4601 // This needs to be called before setType, which may call 4602 // requestFormData, and it needs to have the correct nodePointer. 4603 mWebTextView.setNodePointer(nodePointer); 4604 mWebTextView.setType(nativeFocusCandidateType()); 4605 updateWebTextViewPadding(); 4606 if (null == text) { 4607 if (DebugFlags.WEB_VIEW) { 4608 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4609 } 4610 text = ""; 4611 } 4612 mWebTextView.setTextAndKeepSelection(text); 4613 InputMethodManager imm = InputMethodManager.peekInstance(); 4614 if (imm != null && imm.isActive(mWebTextView)) { 4615 imm.restartInput(mWebTextView); 4616 } 4617 } 4618 if (isFocused()) { 4619 mWebTextView.requestFocus(); 4620 } 4621 } 4622 4623 /** 4624 * Update the padding of mWebTextView based on the native textfield/textarea 4625 */ 4626 void updateWebTextViewPadding() { 4627 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4628 if (paddingRect != null) { 4629 // Use contentToViewDimension since these are the dimensions of 4630 // the padding. 4631 mWebTextView.setPadding( 4632 contentToViewDimension(paddingRect.left), 4633 contentToViewDimension(paddingRect.top), 4634 contentToViewDimension(paddingRect.right), 4635 contentToViewDimension(paddingRect.bottom)); 4636 } 4637 } 4638 4639 /** 4640 * Tell webkit to put the cursor on screen. 4641 */ 4642 /* package */ void revealSelection() { 4643 if (mWebViewCore != null) { 4644 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4645 } 4646 } 4647 4648 /** 4649 * Called by WebTextView to find saved form data associated with the 4650 * textfield 4651 * @param name Name of the textfield. 4652 * @param nodePointer Pointer to the node of the textfield, so it can be 4653 * compared to the currently focused textfield when the data is 4654 * retrieved. 4655 * @param autoFillable true if WebKit has determined this field is part of 4656 * a form that can be auto filled. 4657 * @param autoComplete true if the attribute "autocomplete" is set to true 4658 * on the textfield. 4659 */ 4660 /* package */ void requestFormData(String name, int nodePointer, 4661 boolean autoFillable, boolean autoComplete) { 4662 if (mWebViewCore.getSettings().getSaveFormData()) { 4663 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4664 update.arg1 = nodePointer; 4665 RequestFormData updater = new RequestFormData(name, getUrl(), 4666 update, autoFillable, autoComplete); 4667 Thread t = new Thread(updater); 4668 t.start(); 4669 } 4670 } 4671 4672 /** 4673 * Pass a message to find out the <label> associated with the <input> 4674 * identified by nodePointer 4675 * @param framePointer Pointer to the frame containing the <input> node 4676 * @param nodePointer Pointer to the node for which a <label> is desired. 4677 */ 4678 /* package */ void requestLabel(int framePointer, int nodePointer) { 4679 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4680 nodePointer); 4681 } 4682 4683 /* 4684 * This class requests an Adapter for the WebTextView which shows past 4685 * entries stored in the database. It is a Runnable so that it can be done 4686 * in its own thread, without slowing down the UI. 4687 */ 4688 private class RequestFormData implements Runnable { 4689 private String mName; 4690 private String mUrl; 4691 private Message mUpdateMessage; 4692 private boolean mAutoFillable; 4693 private boolean mAutoComplete; 4694 4695 public RequestFormData(String name, String url, Message msg, 4696 boolean autoFillable, boolean autoComplete) { 4697 mName = name; 4698 mUrl = url; 4699 mUpdateMessage = msg; 4700 mAutoFillable = autoFillable; 4701 mAutoComplete = autoComplete; 4702 } 4703 4704 public void run() { 4705 ArrayList<String> pastEntries = new ArrayList<String>(); 4706 4707 if (mAutoFillable) { 4708 // Note that code inside the adapter click handler in WebTextView depends 4709 // on the AutoFill item being at the top of the drop down list. If you change 4710 // the order, make sure to do it there too! 4711 WebSettings settings = getSettings(); 4712 if (settings != null && settings.getAutoFillProfile() != null) { 4713 pastEntries.add(getResources().getText( 4714 com.android.internal.R.string.autofill_this_form).toString() + 4715 " " + 4716 mAutoFillData.getPreviewString()); 4717 mWebTextView.setAutoFillProfileIsSet(true); 4718 } else { 4719 // There is no autofill profile set up yet, so add an option that 4720 // will invite the user to set their profile up. 4721 pastEntries.add(getResources().getText( 4722 com.android.internal.R.string.setup_autofill).toString()); 4723 mWebTextView.setAutoFillProfileIsSet(false); 4724 } 4725 } 4726 4727 if (mAutoComplete) { 4728 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4729 } 4730 4731 if (pastEntries.size() > 0) { 4732 AutoCompleteAdapter adapter = new 4733 AutoCompleteAdapter(mContext, pastEntries); 4734 mUpdateMessage.obj = adapter; 4735 mUpdateMessage.sendToTarget(); 4736 } 4737 } 4738 } 4739 4740 /** 4741 * Dump the display tree to "/sdcard/displayTree.txt" 4742 * 4743 * @hide debug only 4744 */ 4745 public void dumpDisplayTree() { 4746 nativeDumpDisplayTree(getUrl()); 4747 } 4748 4749 /** 4750 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4751 * "/sdcard/domTree.txt" 4752 * 4753 * @hide debug only 4754 */ 4755 public void dumpDomTree(boolean toFile) { 4756 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4757 } 4758 4759 /** 4760 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4761 * to "/sdcard/renderTree.txt" 4762 * 4763 * @hide debug only 4764 */ 4765 public void dumpRenderTree(boolean toFile) { 4766 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4767 } 4768 4769 /** 4770 * Called by DRT on UI thread, need to proxy to WebCore thread. 4771 * 4772 * @hide debug only 4773 */ 4774 public void useMockDeviceOrientation() { 4775 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4776 } 4777 4778 /** 4779 * Called by DRT on WebCore thread. 4780 * 4781 * @hide debug only 4782 */ 4783 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4784 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4785 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4786 canProvideGamma, gamma); 4787 } 4788 4789 /** 4790 * Dump the V8 counters to standard output. 4791 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4792 * true. Otherwise, this will do nothing. 4793 * 4794 * @hide debug only 4795 */ 4796 public void dumpV8Counters() { 4797 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4798 } 4799 4800 // This is used to determine long press with the center key. Does not 4801 // affect long press with the trackball/touch. 4802 private boolean mGotCenterDown = false; 4803 4804 @Override 4805 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4806 if (mBlockWebkitViewMessages) { 4807 return false; 4808 } 4809 // send complex characters to webkit for use by JS and plugins 4810 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4811 // pass the key to DOM 4812 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4813 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4814 // return true as DOM handles the key 4815 return true; 4816 } 4817 return false; 4818 } 4819 4820 private boolean isEnterActionKey(int keyCode) { 4821 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4822 || keyCode == KeyEvent.KEYCODE_ENTER 4823 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4824 } 4825 4826 @Override 4827 public boolean onKeyDown(int keyCode, KeyEvent event) { 4828 if (DebugFlags.WEB_VIEW) { 4829 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4830 + "keyCode=" + keyCode 4831 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4832 } 4833 if (mBlockWebkitViewMessages) { 4834 return false; 4835 } 4836 4837 // don't implement accelerator keys here; defer to host application 4838 if (event.isCtrlPressed()) { 4839 return false; 4840 } 4841 4842 if (mNativeClass == 0) { 4843 return false; 4844 } 4845 4846 // do this hack up front, so it always works, regardless of touch-mode 4847 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4848 mAutoRedraw = !mAutoRedraw; 4849 if (mAutoRedraw) { 4850 invalidate(); 4851 } 4852 return true; 4853 } 4854 4855 // Bubble up the key event if 4856 // 1. it is a system key; or 4857 // 2. the host application wants to handle it; 4858 if (event.isSystem() 4859 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4860 return false; 4861 } 4862 4863 // accessibility support 4864 if (accessibilityScriptInjected()) { 4865 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4866 // if an accessibility script is injected we delegate to it the key handling. 4867 // this script is a screen reader which is a fully fledged solution for blind 4868 // users to navigate in and interact with web pages. 4869 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4870 return true; 4871 } else { 4872 // Clean up if accessibility was disabled after loading the current URL. 4873 mAccessibilityScriptInjected = false; 4874 } 4875 } else if (mAccessibilityInjector != null) { 4876 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4877 if (mAccessibilityInjector.onKeyEvent(event)) { 4878 // if an accessibility injector is present (no JavaScript enabled or the site 4879 // opts out injecting our JavaScript screen reader) we let it decide whether 4880 // to act on and consume the event. 4881 return true; 4882 } 4883 } else { 4884 // Clean up if accessibility was disabled after loading the current URL. 4885 mAccessibilityInjector = null; 4886 } 4887 } 4888 4889 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4890 if (event.hasNoModifiers()) { 4891 pageUp(false); 4892 return true; 4893 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4894 pageUp(true); 4895 return true; 4896 } 4897 } 4898 4899 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4900 if (event.hasNoModifiers()) { 4901 pageDown(false); 4902 return true; 4903 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4904 pageDown(true); 4905 return true; 4906 } 4907 } 4908 4909 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4910 pageUp(true); 4911 return true; 4912 } 4913 4914 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4915 pageDown(true); 4916 return true; 4917 } 4918 4919 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4920 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4921 switchOutDrawHistory(); 4922 if (nativePageShouldHandleShiftAndArrows()) { 4923 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4924 return true; 4925 } 4926 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4927 switch (keyCode) { 4928 case KeyEvent.KEYCODE_DPAD_UP: 4929 pageUp(true); 4930 return true; 4931 case KeyEvent.KEYCODE_DPAD_DOWN: 4932 pageDown(true); 4933 return true; 4934 case KeyEvent.KEYCODE_DPAD_LEFT: 4935 nativeClearCursor(); // start next trackball movement from page edge 4936 return pinScrollTo(0, mScrollY, true, 0); 4937 case KeyEvent.KEYCODE_DPAD_RIGHT: 4938 nativeClearCursor(); // start next trackball movement from page edge 4939 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4940 } 4941 } 4942 if (mSelectingText) { 4943 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4944 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4945 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4946 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4947 int multiplier = event.getRepeatCount() + 1; 4948 moveSelection(xRate * multiplier, yRate * multiplier); 4949 return true; 4950 } 4951 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4952 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4953 return true; 4954 } 4955 // Bubble up the key event as WebView doesn't handle it 4956 return false; 4957 } 4958 4959 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4960 switchOutDrawHistory(); 4961 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4962 || nativeCursorWantsKeyEvents(); 4963 if (event.getRepeatCount() == 0) { 4964 if (mSelectingText) { 4965 return true; // discard press if copy in progress 4966 } 4967 mGotCenterDown = true; 4968 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4969 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4970 // Already checked mNativeClass, so we do not need to check it 4971 // again. 4972 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4973 if (!wantsKeyEvents) return true; 4974 } 4975 // Bubble up the key event as WebView doesn't handle it 4976 if (!wantsKeyEvents) return false; 4977 } 4978 4979 if (getSettings().getNavDump()) { 4980 switch (keyCode) { 4981 case KeyEvent.KEYCODE_4: 4982 dumpDisplayTree(); 4983 break; 4984 case KeyEvent.KEYCODE_5: 4985 case KeyEvent.KEYCODE_6: 4986 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4987 break; 4988 case KeyEvent.KEYCODE_7: 4989 case KeyEvent.KEYCODE_8: 4990 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4991 break; 4992 case KeyEvent.KEYCODE_9: 4993 nativeInstrumentReport(); 4994 return true; 4995 } 4996 } 4997 4998 if (nativeCursorIsTextInput()) { 4999 // This message will put the node in focus, for the DOM's notion 5000 // of focus. 5001 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5002 nativeCursorNodePointer()); 5003 // This will bring up the WebTextView and put it in focus, for 5004 // our view system's notion of focus 5005 rebuildWebTextView(); 5006 // Now we need to pass the event to it 5007 if (inEditingMode()) { 5008 mWebTextView.setDefaultSelection(); 5009 return mWebTextView.dispatchKeyEvent(event); 5010 } 5011 } else if (nativeHasFocusNode()) { 5012 // In this case, the cursor is not on a text input, but the focus 5013 // might be. Check it, and if so, hand over to the WebTextView. 5014 rebuildWebTextView(); 5015 if (inEditingMode()) { 5016 mWebTextView.setDefaultSelection(); 5017 return mWebTextView.dispatchKeyEvent(event); 5018 } 5019 } 5020 5021 // TODO: should we pass all the keys to DOM or check the meta tag 5022 if (nativeCursorWantsKeyEvents() || true) { 5023 // pass the key to DOM 5024 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5025 // return true as DOM handles the key 5026 return true; 5027 } 5028 5029 // Bubble up the key event as WebView doesn't handle it 5030 return false; 5031 } 5032 5033 @Override 5034 public boolean onKeyUp(int keyCode, KeyEvent event) { 5035 if (DebugFlags.WEB_VIEW) { 5036 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5037 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5038 } 5039 if (mBlockWebkitViewMessages) { 5040 return false; 5041 } 5042 5043 if (mNativeClass == 0) { 5044 return false; 5045 } 5046 5047 // special CALL handling when cursor node's href is "tel:XXX" 5048 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5049 String text = nativeCursorText(); 5050 if (!nativeCursorIsTextInput() && text != null 5051 && text.startsWith(SCHEME_TEL)) { 5052 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5053 getContext().startActivity(intent); 5054 return true; 5055 } 5056 } 5057 5058 // Bubble up the key event if 5059 // 1. it is a system key; or 5060 // 2. the host application wants to handle it; 5061 if (event.isSystem() 5062 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5063 return false; 5064 } 5065 5066 // accessibility support 5067 if (accessibilityScriptInjected()) { 5068 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5069 // if an accessibility script is injected we delegate to it the key handling. 5070 // this script is a screen reader which is a fully fledged solution for blind 5071 // users to navigate in and interact with web pages. 5072 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5073 return true; 5074 } else { 5075 // Clean up if accessibility was disabled after loading the current URL. 5076 mAccessibilityScriptInjected = false; 5077 } 5078 } else if (mAccessibilityInjector != null) { 5079 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5080 if (mAccessibilityInjector.onKeyEvent(event)) { 5081 // if an accessibility injector is present (no JavaScript enabled or the site 5082 // opts out injecting our JavaScript screen reader) we let it decide whether to 5083 // act on and consume the event. 5084 return true; 5085 } 5086 } else { 5087 // Clean up if accessibility was disabled after loading the current URL. 5088 mAccessibilityInjector = null; 5089 } 5090 } 5091 5092 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5093 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5094 if (nativePageShouldHandleShiftAndArrows()) { 5095 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5096 return true; 5097 } 5098 // always handle the navigation keys in the UI thread 5099 // Bubble up the key event as WebView doesn't handle it 5100 return false; 5101 } 5102 5103 if (isEnterActionKey(keyCode)) { 5104 // remove the long press message first 5105 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5106 mGotCenterDown = false; 5107 5108 if (mSelectingText) { 5109 if (mExtendSelection) { 5110 copySelection(); 5111 selectionDone(); 5112 } else { 5113 mExtendSelection = true; 5114 nativeSetExtendSelection(); 5115 invalidate(); // draw the i-beam instead of the arrow 5116 } 5117 return true; // discard press if copy in progress 5118 } 5119 5120 // perform the single click 5121 Rect visibleRect = sendOurVisibleRect(); 5122 // Note that sendOurVisibleRect calls viewToContent, so the 5123 // coordinates should be in content coordinates. 5124 if (!nativeCursorIntersects(visibleRect)) { 5125 return false; 5126 } 5127 WebViewCore.CursorData data = cursorData(); 5128 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5129 playSoundEffect(SoundEffectConstants.CLICK); 5130 if (nativeCursorIsTextInput()) { 5131 rebuildWebTextView(); 5132 centerKeyPressOnTextField(); 5133 if (inEditingMode()) { 5134 mWebTextView.setDefaultSelection(); 5135 } 5136 return true; 5137 } 5138 clearTextEntry(); 5139 nativeShowCursorTimed(); 5140 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5141 return true; 5142 } 5143 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5144 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5145 nativeCursorNodePointer()); 5146 return true; 5147 } 5148 } 5149 5150 // TODO: should we pass all the keys to DOM or check the meta tag 5151 if (nativeCursorWantsKeyEvents() || true) { 5152 // pass the key to DOM 5153 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5154 // return true as DOM handles the key 5155 return true; 5156 } 5157 5158 // Bubble up the key event as WebView doesn't handle it 5159 return false; 5160 } 5161 5162 /* 5163 * Enter selecting text mode, and see if CAB should be shown. 5164 * Returns true if the WebView is now in 5165 * selecting text mode (including if it was already in that mode, and this 5166 * method did nothing). 5167 */ 5168 private boolean setUpSelect(boolean selectWord, int x, int y) { 5169 if (0 == mNativeClass) return false; // client isn't initialized 5170 if (inFullScreenMode()) return false; 5171 if (mSelectingText) return true; 5172 nativeResetSelection(); 5173 if (selectWord && !nativeWordSelection(x, y)) { 5174 selectionDone(); 5175 return false; 5176 } 5177 mSelectCallback = new SelectActionModeCallback(); 5178 mSelectCallback.setWebView(this); 5179 if (startActionMode(mSelectCallback) == null) { 5180 // There is no ActionMode, so do not allow the user to modify a 5181 // selection. 5182 selectionDone(); 5183 return false; 5184 } 5185 mExtendSelection = false; 5186 mSelectingText = mDrawSelectionPointer = true; 5187 // don't let the picture change during text selection 5188 WebViewCore.pauseUpdatePicture(mWebViewCore); 5189 if (nativeHasCursorNode()) { 5190 Rect rect = nativeCursorNodeBounds(); 5191 mSelectX = contentToViewX(rect.left); 5192 mSelectY = contentToViewY(rect.top); 5193 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5194 mSelectX = mScrollX + mLastTouchX; 5195 mSelectY = mScrollY + mLastTouchY; 5196 } else { 5197 mSelectX = mScrollX + getViewWidth() / 2; 5198 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5199 } 5200 nativeHideCursor(); 5201 mMinAutoScrollX = 0; 5202 mMaxAutoScrollX = getViewWidth(); 5203 mMinAutoScrollY = 0; 5204 mMaxAutoScrollY = getViewHeightWithTitle(); 5205 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 5206 viewToContentY(mSelectY), mScrollingLayerRect, 5207 mScrollingLayerBounds); 5208 if (mScrollingLayer != 0) { 5209 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5210 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5211 contentToViewX(mScrollingLayerBounds.left)); 5212 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5213 contentToViewX(mScrollingLayerBounds.right)); 5214 } 5215 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5216 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5217 contentToViewY(mScrollingLayerBounds.top)); 5218 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5219 contentToViewY(mScrollingLayerBounds.bottom)); 5220 } 5221 } 5222 mMinAutoScrollX += SELECT_SCROLL; 5223 mMaxAutoScrollX -= SELECT_SCROLL; 5224 mMinAutoScrollY += SELECT_SCROLL; 5225 mMaxAutoScrollY -= SELECT_SCROLL; 5226 return true; 5227 } 5228 5229 /** 5230 * Use this method to put the WebView into text selection mode. 5231 * Do not rely on this functionality; it will be deprecated in the future. 5232 * @deprecated This method is now obsolete. 5233 */ 5234 @Deprecated 5235 public void emulateShiftHeld() { 5236 checkThread(); 5237 setUpSelect(false, 0, 0); 5238 } 5239 5240 /** 5241 * Select all of the text in this WebView. 5242 * 5243 * @hide pending API council approval. 5244 */ 5245 public void selectAll() { 5246 if (0 == mNativeClass) return; // client isn't initialized 5247 if (inFullScreenMode()) return; 5248 if (!mSelectingText) { 5249 // retrieve a point somewhere within the text 5250 Point select = nativeSelectableText(); 5251 if (!selectText(select.x, select.y)) return; 5252 } 5253 nativeSelectAll(); 5254 mDrawSelectionPointer = false; 5255 mExtendSelection = true; 5256 invalidate(); 5257 } 5258 5259 /** 5260 * Called when the selection has been removed. 5261 */ 5262 void selectionDone() { 5263 if (mSelectingText) { 5264 mSelectingText = false; 5265 // finish is idempotent, so this is fine even if selectionDone was 5266 // called by mSelectCallback.onDestroyActionMode 5267 mSelectCallback.finish(); 5268 mSelectCallback = null; 5269 WebViewCore.resumePriority(); 5270 WebViewCore.resumeUpdatePicture(mWebViewCore); 5271 invalidate(); // redraw without selection 5272 mAutoScrollX = 0; 5273 mAutoScrollY = 0; 5274 mSentAutoScrollMessage = false; 5275 } 5276 } 5277 5278 /** 5279 * Copy the selection to the clipboard 5280 * 5281 * @hide pending API council approval. 5282 */ 5283 public boolean copySelection() { 5284 boolean copiedSomething = false; 5285 String selection = getSelection(); 5286 if (selection != null && selection != "") { 5287 if (DebugFlags.WEB_VIEW) { 5288 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5289 } 5290 Toast.makeText(mContext 5291 , com.android.internal.R.string.text_copied 5292 , Toast.LENGTH_SHORT).show(); 5293 copiedSomething = true; 5294 ClipboardManager cm = (ClipboardManager)getContext() 5295 .getSystemService(Context.CLIPBOARD_SERVICE); 5296 cm.setText(selection); 5297 } 5298 invalidate(); // remove selection region and pointer 5299 return copiedSomething; 5300 } 5301 5302 /** 5303 * @hide pending API Council approval. 5304 */ 5305 public SearchBox getSearchBox() { 5306 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5307 return null; 5308 } 5309 return mWebViewCore.getBrowserFrame().getSearchBox(); 5310 } 5311 5312 /** 5313 * Returns the currently highlighted text as a string. 5314 */ 5315 String getSelection() { 5316 if (mNativeClass == 0) return ""; 5317 return nativeGetSelection(); 5318 } 5319 5320 @Override 5321 protected void onAttachedToWindow() { 5322 super.onAttachedToWindow(); 5323 if (hasWindowFocus()) setActive(true); 5324 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5325 if (mGlobalLayoutListener == null) { 5326 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5327 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5328 } 5329 if (mScrollChangedListener == null) { 5330 mScrollChangedListener = new InnerScrollChangedListener(); 5331 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5332 } 5333 5334 addAccessibilityApisToJavaScript(); 5335 5336 mTouchEventQueue.reset(); 5337 } 5338 5339 @Override 5340 protected void onDetachedFromWindow() { 5341 clearHelpers(); 5342 mZoomManager.dismissZoomPicker(); 5343 if (hasWindowFocus()) setActive(false); 5344 5345 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5346 if (mGlobalLayoutListener != null) { 5347 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5348 mGlobalLayoutListener = null; 5349 } 5350 if (mScrollChangedListener != null) { 5351 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5352 mScrollChangedListener = null; 5353 } 5354 5355 removeAccessibilityApisFromJavaScript(); 5356 5357 super.onDetachedFromWindow(); 5358 } 5359 5360 @Override 5361 protected void onVisibilityChanged(View changedView, int visibility) { 5362 super.onVisibilityChanged(changedView, visibility); 5363 // The zoomManager may be null if the webview is created from XML that 5364 // specifies the view's visibility param as not visible (see http://b/2794841) 5365 if (visibility != View.VISIBLE && mZoomManager != null) { 5366 mZoomManager.dismissZoomPicker(); 5367 } 5368 } 5369 5370 /** 5371 * @deprecated WebView no longer needs to implement 5372 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5373 */ 5374 @Deprecated 5375 public void onChildViewAdded(View parent, View child) {} 5376 5377 /** 5378 * @deprecated WebView no longer needs to implement 5379 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5380 */ 5381 @Deprecated 5382 public void onChildViewRemoved(View p, View child) {} 5383 5384 /** 5385 * @deprecated WebView should not have implemented 5386 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5387 */ 5388 @Deprecated 5389 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5390 } 5391 5392 void setActive(boolean active) { 5393 if (active) { 5394 if (hasFocus()) { 5395 // If our window regained focus, and we have focus, then begin 5396 // drawing the cursor ring 5397 mDrawCursorRing = true; 5398 setFocusControllerActive(true); 5399 if (mNativeClass != 0) { 5400 nativeRecordButtons(true, false, true); 5401 } 5402 } else { 5403 if (!inEditingMode()) { 5404 // If our window gained focus, but we do not have it, do not 5405 // draw the cursor ring. 5406 mDrawCursorRing = false; 5407 setFocusControllerActive(false); 5408 } 5409 // We do not call nativeRecordButtons here because we assume 5410 // that when we lost focus, or window focus, it got called with 5411 // false for the first parameter 5412 } 5413 } else { 5414 if (!mZoomManager.isZoomPickerVisible()) { 5415 /* 5416 * The external zoom controls come in their own window, so our 5417 * window loses focus. Our policy is to not draw the cursor ring 5418 * if our window is not focused, but this is an exception since 5419 * the user can still navigate the web page with the zoom 5420 * controls showing. 5421 */ 5422 mDrawCursorRing = false; 5423 } 5424 mKeysPressed.clear(); 5425 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5426 mTouchMode = TOUCH_DONE_MODE; 5427 if (mNativeClass != 0) { 5428 nativeRecordButtons(false, false, true); 5429 } 5430 setFocusControllerActive(false); 5431 } 5432 invalidate(); 5433 } 5434 5435 // To avoid drawing the cursor ring, and remove the TextView when our window 5436 // loses focus. 5437 @Override 5438 public void onWindowFocusChanged(boolean hasWindowFocus) { 5439 setActive(hasWindowFocus); 5440 if (hasWindowFocus) { 5441 JWebCoreJavaBridge.setActiveWebView(this); 5442 } else { 5443 JWebCoreJavaBridge.removeActiveWebView(this); 5444 } 5445 super.onWindowFocusChanged(hasWindowFocus); 5446 } 5447 5448 /* 5449 * Pass a message to WebCore Thread, telling the WebCore::Page's 5450 * FocusController to be "inactive" so that it will 5451 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5452 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5453 */ 5454 /* package */ void setFocusControllerActive(boolean active) { 5455 if (mWebViewCore == null) return; 5456 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5457 // Need to send this message after the document regains focus. 5458 if (active && mListBoxMessage != null) { 5459 mWebViewCore.sendMessage(mListBoxMessage); 5460 mListBoxMessage = null; 5461 } 5462 } 5463 5464 @Override 5465 protected void onFocusChanged(boolean focused, int direction, 5466 Rect previouslyFocusedRect) { 5467 if (DebugFlags.WEB_VIEW) { 5468 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5469 } 5470 if (focused) { 5471 // When we regain focus, if we have window focus, resume drawing 5472 // the cursor ring 5473 if (hasWindowFocus()) { 5474 mDrawCursorRing = true; 5475 if (mNativeClass != 0) { 5476 nativeRecordButtons(true, false, true); 5477 } 5478 setFocusControllerActive(true); 5479 //} else { 5480 // The WebView has gained focus while we do not have 5481 // windowfocus. When our window lost focus, we should have 5482 // called nativeRecordButtons(false...) 5483 } 5484 } else { 5485 // When we lost focus, unless focus went to the TextView (which is 5486 // true if we are in editing mode), stop drawing the cursor ring. 5487 if (!inEditingMode()) { 5488 mDrawCursorRing = false; 5489 if (mNativeClass != 0) { 5490 nativeRecordButtons(false, false, true); 5491 } 5492 setFocusControllerActive(false); 5493 } 5494 mKeysPressed.clear(); 5495 } 5496 5497 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5498 } 5499 5500 void setGLRectViewport() { 5501 // Use the getGlobalVisibleRect() to get the intersection among the parents 5502 // visible == false means we're clipped - send a null rect down to indicate that 5503 // we should not draw 5504 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5505 if (visible) { 5506 // Then need to invert the Y axis, just for GL 5507 View rootView = getRootView(); 5508 int rootViewHeight = rootView.getHeight(); 5509 mViewRectViewport.set(mGLRectViewport); 5510 int savedWebViewBottom = mGLRectViewport.bottom; 5511 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5512 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5513 mGLViewportEmpty = false; 5514 } else { 5515 mGLViewportEmpty = true; 5516 } 5517 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5518 mGLViewportEmpty ? null : mViewRectViewport); 5519 } 5520 5521 /** 5522 * @hide 5523 */ 5524 @Override 5525 protected boolean setFrame(int left, int top, int right, int bottom) { 5526 boolean changed = super.setFrame(left, top, right, bottom); 5527 if (!changed && mHeightCanMeasure) { 5528 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5529 // in WebViewCore after we get the first layout. We do call 5530 // requestLayout() when we get contentSizeChanged(). But the View 5531 // system won't call onSizeChanged if the dimension is not changed. 5532 // In this case, we need to call sendViewSizeZoom() explicitly to 5533 // notify the WebKit about the new dimensions. 5534 sendViewSizeZoom(false); 5535 } 5536 setGLRectViewport(); 5537 return changed; 5538 } 5539 5540 @Override 5541 protected void onSizeChanged(int w, int h, int ow, int oh) { 5542 super.onSizeChanged(w, h, ow, oh); 5543 5544 // adjust the max viewport width depending on the view dimensions. This 5545 // is to ensure the scaling is not going insane. So do not shrink it if 5546 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5547 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5548 if (newMaxViewportWidth > sMaxViewportWidth) { 5549 sMaxViewportWidth = newMaxViewportWidth; 5550 } 5551 5552 mZoomManager.onSizeChanged(w, h, ow, oh); 5553 5554 if (mLoadedPicture != null && mDelaySetPicture == null) { 5555 // Size changes normally result in a new picture 5556 // Re-set the loaded picture to simulate that 5557 // However, do not update the base layer as that hasn't changed 5558 setNewPicture(mLoadedPicture, false); 5559 } 5560 } 5561 5562 @Override 5563 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5564 super.onScrollChanged(l, t, oldl, oldt); 5565 if (!mInOverScrollMode) { 5566 sendOurVisibleRect(); 5567 // update WebKit if visible title bar height changed. The logic is same 5568 // as getVisibleTitleHeightImpl. 5569 int titleHeight = getTitleHeight(); 5570 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5571 sendViewSizeZoom(false); 5572 } 5573 } 5574 } 5575 5576 @Override 5577 public boolean dispatchKeyEvent(KeyEvent event) { 5578 switch (event.getAction()) { 5579 case KeyEvent.ACTION_DOWN: 5580 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5581 break; 5582 case KeyEvent.ACTION_MULTIPLE: 5583 // Always accept the action. 5584 break; 5585 case KeyEvent.ACTION_UP: 5586 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5587 if (location == -1) { 5588 // We did not receive the key down for this key, so do not 5589 // handle the key up. 5590 return false; 5591 } else { 5592 // We did receive the key down. Handle the key up, and 5593 // remove it from our pressed keys. 5594 mKeysPressed.remove(location); 5595 } 5596 break; 5597 default: 5598 // Accept the action. This should not happen, unless a new 5599 // action is added to KeyEvent. 5600 break; 5601 } 5602 if (inEditingMode() && mWebTextView.isFocused()) { 5603 // Ensure that the WebTextView gets the event, even if it does 5604 // not currently have a bounds. 5605 return mWebTextView.dispatchKeyEvent(event); 5606 } else { 5607 return super.dispatchKeyEvent(event); 5608 } 5609 } 5610 5611 /* 5612 * Here is the snap align logic: 5613 * 1. If it starts nearly horizontally or vertically, snap align; 5614 * 2. If there is a dramitic direction change, let it go; 5615 * 5616 * Adjustable parameters. Angle is the radians on a unit circle, limited 5617 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5618 */ 5619 private static final float HSLOPE_TO_START_SNAP = .25f; 5620 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5621 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5622 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5623 /* 5624 * These values are used to influence the average angle when entering 5625 * snap mode. If is is the first movement entering snap, we set the average 5626 * to the appropriate ideal. If the user is entering into snap after the 5627 * first movement, then we average the average angle with these values. 5628 */ 5629 private static final float ANGLE_VERT = 2f; 5630 private static final float ANGLE_HORIZ = 0f; 5631 /* 5632 * The modified moving average weight. 5633 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5634 */ 5635 private static final float MMA_WEIGHT_N = 5; 5636 5637 private boolean hitFocusedPlugin(int contentX, int contentY) { 5638 if (DebugFlags.WEB_VIEW) { 5639 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5640 Rect r = nativeFocusNodeBounds(); 5641 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5642 + ", " + r.right + ", " + r.bottom + ")"); 5643 } 5644 return nativeFocusIsPlugin() 5645 && nativeFocusNodeBounds().contains(contentX, contentY); 5646 } 5647 5648 private boolean shouldForwardTouchEvent() { 5649 if (mFullScreenHolder != null) return true; 5650 if (mBlockWebkitViewMessages) return false; 5651 return mForwardTouchEvents 5652 && !mSelectingText 5653 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5654 && mPreventDefault != PREVENT_DEFAULT_NO; 5655 } 5656 5657 private boolean inFullScreenMode() { 5658 return mFullScreenHolder != null; 5659 } 5660 5661 private void dismissFullScreenMode() { 5662 if (inFullScreenMode()) { 5663 mFullScreenHolder.hide(); 5664 mFullScreenHolder = null; 5665 } 5666 } 5667 5668 void onPinchToZoomAnimationStart() { 5669 // cancel the single touch handling 5670 cancelTouch(); 5671 onZoomAnimationStart(); 5672 } 5673 5674 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5675 onZoomAnimationEnd(); 5676 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5677 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5678 // as it may trigger the unwanted fling. 5679 mTouchMode = TOUCH_PINCH_DRAG; 5680 mConfirmMove = true; 5681 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5682 } 5683 5684 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5685 // layer is found. 5686 private void startScrollingLayer(float x, float y) { 5687 int contentX = viewToContentX((int) x + mScrollX); 5688 int contentY = viewToContentY((int) y + mScrollY); 5689 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5690 mScrollingLayerRect, mScrollingLayerBounds); 5691 if (mScrollingLayer != 0) { 5692 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5693 } 5694 } 5695 5696 // 1/(density * density) used to compute the distance between points. 5697 // Computed in init(). 5698 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5699 5700 // The distance between two points reported in onTouchEvent scaled by the 5701 // density of the screen. 5702 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5703 5704 @Override 5705 public boolean onHoverEvent(MotionEvent event) { 5706 if (mNativeClass == 0) { 5707 return false; 5708 } 5709 WebViewCore.CursorData data = cursorDataNoPosition(); 5710 data.mX = viewToContentX((int) event.getX() + mScrollX); 5711 data.mY = viewToContentY((int) event.getY() + mScrollY); 5712 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5713 return true; 5714 } 5715 5716 @Override 5717 public boolean onTouchEvent(MotionEvent ev) { 5718 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5719 return false; 5720 } 5721 5722 if (DebugFlags.WEB_VIEW) { 5723 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5724 + " mTouchMode=" + mTouchMode 5725 + " numPointers=" + ev.getPointerCount()); 5726 } 5727 5728 // If WebKit wasn't interested in this multitouch gesture, enqueue 5729 // the event for handling directly rather than making the round trip 5730 // to WebKit and back. 5731 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5732 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5733 } else { 5734 mTouchEventQueue.enqueueTouchEvent(ev); 5735 } 5736 5737 // Since all events are handled asynchronously, we always want the gesture stream. 5738 return true; 5739 } 5740 5741 private float calculateDragAngle(int dx, int dy) { 5742 dx = Math.abs(dx); 5743 dy = Math.abs(dy); 5744 return (float) Math.atan2(dy, dx); 5745 } 5746 5747 /* 5748 * Common code for single touch and multi-touch. 5749 * (x, y) denotes current focus point, which is the touch point for single touch 5750 * and the middle point for multi-touch. 5751 */ 5752 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5753 long eventTime = ev.getEventTime(); 5754 5755 // Due to the touch screen edge effect, a touch closer to the edge 5756 // always snapped to the edge. As getViewWidth() can be different from 5757 // getWidth() due to the scrollbar, adjusting the point to match 5758 // getViewWidth(). Same applied to the height. 5759 x = Math.min(x, getViewWidth() - 1); 5760 y = Math.min(y, getViewHeightWithTitle() - 1); 5761 5762 int deltaX = mLastTouchX - x; 5763 int deltaY = mLastTouchY - y; 5764 int contentX = viewToContentX(x + mScrollX); 5765 int contentY = viewToContentY(y + mScrollY); 5766 5767 switch (action) { 5768 case MotionEvent.ACTION_DOWN: { 5769 mPreventDefault = PREVENT_DEFAULT_NO; 5770 mConfirmMove = false; 5771 mInitialHitTestResult = null; 5772 if (!mScroller.isFinished()) { 5773 // stop the current scroll animation, but if this is 5774 // the start of a fling, allow it to add to the current 5775 // fling's velocity 5776 mScroller.abortAnimation(); 5777 mTouchMode = TOUCH_DRAG_START_MODE; 5778 mConfirmMove = true; 5779 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5780 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5781 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5782 if (getSettings().supportTouchOnly()) { 5783 removeTouchHighlight(true); 5784 } 5785 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5786 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5787 } else { 5788 // commit the short press action for the previous tap 5789 doShortPress(); 5790 mTouchMode = TOUCH_INIT_MODE; 5791 mDeferTouchProcess = !mBlockWebkitViewMessages 5792 && (!inFullScreenMode() && mForwardTouchEvents) 5793 ? hitFocusedPlugin(contentX, contentY) 5794 : false; 5795 } 5796 } else { // the normal case 5797 mTouchMode = TOUCH_INIT_MODE; 5798 mDeferTouchProcess = !mBlockWebkitViewMessages 5799 && (!inFullScreenMode() && mForwardTouchEvents) 5800 ? hitFocusedPlugin(contentX, contentY) 5801 : false; 5802 if (!mBlockWebkitViewMessages) { 5803 mWebViewCore.sendMessage( 5804 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5805 } 5806 if (getSettings().supportTouchOnly()) { 5807 TouchHighlightData data = new TouchHighlightData(); 5808 data.mX = contentX; 5809 data.mY = contentY; 5810 data.mSlop = viewToContentDimension(mNavSlop); 5811 if (!mBlockWebkitViewMessages) { 5812 mWebViewCore.sendMessageDelayed( 5813 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5814 ViewConfiguration.getTapTimeout()); 5815 } 5816 if (DEBUG_TOUCH_HIGHLIGHT) { 5817 if (getSettings().getNavDump()) { 5818 mTouchHighlightX = (int) x + mScrollX; 5819 mTouchHighlightY = (int) y + mScrollY; 5820 mPrivateHandler.postDelayed(new Runnable() { 5821 public void run() { 5822 mTouchHighlightX = mTouchHighlightY = 0; 5823 invalidate(); 5824 } 5825 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5826 } 5827 } 5828 } 5829 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5830 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5831 (eventTime - mLastTouchUpTime), eventTime); 5832 } 5833 if (mSelectingText) { 5834 mDrawSelectionPointer = false; 5835 mSelectionStarted = nativeStartSelection(contentX, contentY); 5836 if (DebugFlags.WEB_VIEW) { 5837 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5838 } 5839 invalidate(); 5840 } 5841 } 5842 // Trigger the link 5843 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5844 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5845 mPrivateHandler.sendEmptyMessageDelayed( 5846 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5847 mPrivateHandler.sendEmptyMessageDelayed( 5848 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5849 if (inFullScreenMode() || mDeferTouchProcess) { 5850 mPreventDefault = PREVENT_DEFAULT_YES; 5851 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 5852 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5853 } else { 5854 mPreventDefault = PREVENT_DEFAULT_NO; 5855 } 5856 // pass the touch events from UI thread to WebCore thread 5857 if (shouldForwardTouchEvent()) { 5858 TouchEventData ted = new TouchEventData(); 5859 ted.mAction = action; 5860 ted.mIds = new int[1]; 5861 ted.mIds[0] = ev.getPointerId(0); 5862 ted.mPoints = new Point[1]; 5863 ted.mPoints[0] = new Point(contentX, contentY); 5864 ted.mPointsInView = new Point[1]; 5865 ted.mPointsInView[0] = new Point(x, y); 5866 ted.mMetaState = ev.getMetaState(); 5867 ted.mReprocess = mDeferTouchProcess; 5868 ted.mNativeLayer = nativeScrollableLayer( 5869 contentX, contentY, ted.mNativeLayerRect, null); 5870 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5871 mTouchEventQueue.preQueueTouchEventData(ted); 5872 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5873 if (mDeferTouchProcess) { 5874 // still needs to set them for compute deltaX/Y 5875 mLastTouchX = x; 5876 mLastTouchY = y; 5877 break; 5878 } 5879 if (!inFullScreenMode()) { 5880 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5881 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5882 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5883 action, 0), TAP_TIMEOUT); 5884 } 5885 } 5886 } 5887 startTouch(x, y, eventTime); 5888 break; 5889 } 5890 case MotionEvent.ACTION_MOVE: { 5891 boolean firstMove = false; 5892 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5893 >= mTouchSlopSquare) { 5894 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5895 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5896 mConfirmMove = true; 5897 firstMove = true; 5898 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5899 mTouchMode = TOUCH_INIT_MODE; 5900 } 5901 if (getSettings().supportTouchOnly()) { 5902 removeTouchHighlight(true); 5903 } 5904 } 5905 // pass the touch events from UI thread to WebCore thread 5906 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5907 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5908 TouchEventData ted = new TouchEventData(); 5909 ted.mAction = action; 5910 ted.mIds = new int[1]; 5911 ted.mIds[0] = ev.getPointerId(0); 5912 ted.mPoints = new Point[1]; 5913 ted.mPoints[0] = new Point(contentX, contentY); 5914 ted.mPointsInView = new Point[1]; 5915 ted.mPointsInView[0] = new Point(x, y); 5916 ted.mMetaState = ev.getMetaState(); 5917 ted.mReprocess = mDeferTouchProcess; 5918 ted.mNativeLayer = mScrollingLayer; 5919 ted.mNativeLayerRect.set(mScrollingLayerRect); 5920 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5921 mTouchEventQueue.preQueueTouchEventData(ted); 5922 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5923 mLastSentTouchTime = eventTime; 5924 if (mDeferTouchProcess) { 5925 break; 5926 } 5927 if (firstMove && !inFullScreenMode()) { 5928 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5929 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5930 action, 0), TAP_TIMEOUT); 5931 } 5932 } 5933 if (mTouchMode == TOUCH_DONE_MODE 5934 || mPreventDefault == PREVENT_DEFAULT_YES) { 5935 // no dragging during scroll zoom animation, or when prevent 5936 // default is yes 5937 break; 5938 } 5939 if (mVelocityTracker == null) { 5940 Log.e(LOGTAG, "Got null mVelocityTracker when " 5941 + "mPreventDefault = " + mPreventDefault 5942 + " mDeferTouchProcess = " + mDeferTouchProcess 5943 + " mTouchMode = " + mTouchMode); 5944 } else { 5945 mVelocityTracker.addMovement(ev); 5946 } 5947 if (mSelectingText && mSelectionStarted) { 5948 if (DebugFlags.WEB_VIEW) { 5949 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5950 } 5951 ViewParent parent = getParent(); 5952 if (parent != null) { 5953 parent.requestDisallowInterceptTouchEvent(true); 5954 } 5955 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5956 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5957 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5958 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5959 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5960 && !mSentAutoScrollMessage) { 5961 mSentAutoScrollMessage = true; 5962 mPrivateHandler.sendEmptyMessageDelayed( 5963 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5964 } 5965 if (deltaX != 0 || deltaY != 0) { 5966 nativeExtendSelection(contentX, contentY); 5967 invalidate(); 5968 } 5969 break; 5970 } 5971 5972 if (mTouchMode != TOUCH_DRAG_MODE && 5973 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5974 5975 if (!mConfirmMove) { 5976 break; 5977 } 5978 5979 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5980 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5981 // track mLastTouchTime as we may need to do fling at 5982 // ACTION_UP 5983 mLastTouchTime = eventTime; 5984 break; 5985 } 5986 5987 // Only lock dragging to one axis if we don't have a scale in progress. 5988 // Scaling implies free-roaming movement. Note this is only ever a question 5989 // if mZoomManager.supportsPanDuringZoom() is true. 5990 final ScaleGestureDetector detector = 5991 mZoomManager.getMultiTouchGestureDetector(); 5992 mAverageAngle = calculateDragAngle(deltaX, deltaY); 5993 if (detector == null || !detector.isInProgress()) { 5994 // if it starts nearly horizontal or vertical, enforce it 5995 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 5996 mSnapScrollMode = SNAP_X; 5997 mSnapPositive = deltaX > 0; 5998 mAverageAngle = ANGLE_HORIZ; 5999 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6000 mSnapScrollMode = SNAP_Y; 6001 mSnapPositive = deltaY > 0; 6002 mAverageAngle = ANGLE_VERT; 6003 } 6004 } 6005 6006 mTouchMode = TOUCH_DRAG_MODE; 6007 mLastTouchX = x; 6008 mLastTouchY = y; 6009 deltaX = 0; 6010 deltaY = 0; 6011 6012 startScrollingLayer(x, y); 6013 startDrag(); 6014 } 6015 6016 // do pan 6017 boolean done = false; 6018 boolean keepScrollBarsVisible = false; 6019 if (deltaX == 0 && deltaY == 0) { 6020 keepScrollBarsVisible = done = true; 6021 } else { 6022 mAverageAngle += 6023 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6024 / MMA_WEIGHT_N; 6025 if (mSnapScrollMode != SNAP_NONE) { 6026 if (mSnapScrollMode == SNAP_Y) { 6027 // radical change means getting out of snap mode 6028 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6029 mSnapScrollMode = SNAP_NONE; 6030 } 6031 } 6032 if (mSnapScrollMode == SNAP_X) { 6033 // radical change means getting out of snap mode 6034 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6035 mSnapScrollMode = SNAP_NONE; 6036 } 6037 } 6038 } else { 6039 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6040 mSnapScrollMode = SNAP_X; 6041 mSnapPositive = deltaX > 0; 6042 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6043 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6044 mSnapScrollMode = SNAP_Y; 6045 mSnapPositive = deltaY > 0; 6046 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6047 } 6048 } 6049 if (mSnapScrollMode != SNAP_NONE) { 6050 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6051 deltaY = 0; 6052 } else { 6053 deltaX = 0; 6054 } 6055 } 6056 mLastTouchX = x; 6057 mLastTouchY = y; 6058 if ((deltaX | deltaY) != 0) { 6059 mHeldMotionless = MOTIONLESS_FALSE; 6060 } 6061 mLastTouchTime = eventTime; 6062 } 6063 6064 doDrag(deltaX, deltaY); 6065 6066 // Turn off scrollbars when dragging a layer. 6067 if (keepScrollBarsVisible && 6068 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6069 if (mHeldMotionless != MOTIONLESS_TRUE) { 6070 mHeldMotionless = MOTIONLESS_TRUE; 6071 invalidate(); 6072 } 6073 // keep the scrollbar on the screen even there is no scroll 6074 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6075 false); 6076 // return false to indicate that we can't pan out of the 6077 // view space 6078 return !done; 6079 } 6080 break; 6081 } 6082 case MotionEvent.ACTION_UP: { 6083 if (!isFocused()) requestFocus(); 6084 // pass the touch events from UI thread to WebCore thread 6085 if (shouldForwardTouchEvent()) { 6086 TouchEventData ted = new TouchEventData(); 6087 ted.mIds = new int[1]; 6088 ted.mIds[0] = ev.getPointerId(0); 6089 ted.mAction = action; 6090 ted.mPoints = new Point[1]; 6091 ted.mPoints[0] = new Point(contentX, contentY); 6092 ted.mPointsInView = new Point[1]; 6093 ted.mPointsInView[0] = new Point(x, y); 6094 ted.mMetaState = ev.getMetaState(); 6095 ted.mReprocess = mDeferTouchProcess; 6096 ted.mNativeLayer = mScrollingLayer; 6097 ted.mNativeLayerRect.set(mScrollingLayerRect); 6098 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6099 mTouchEventQueue.preQueueTouchEventData(ted); 6100 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6101 } 6102 mLastTouchUpTime = eventTime; 6103 if (mSentAutoScrollMessage) { 6104 mAutoScrollX = mAutoScrollY = 0; 6105 } 6106 switch (mTouchMode) { 6107 case TOUCH_DOUBLE_TAP_MODE: // double tap 6108 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6109 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6110 if (inFullScreenMode() || mDeferTouchProcess) { 6111 TouchEventData ted = new TouchEventData(); 6112 ted.mIds = new int[1]; 6113 ted.mIds[0] = ev.getPointerId(0); 6114 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6115 ted.mPoints = new Point[1]; 6116 ted.mPoints[0] = new Point(contentX, contentY); 6117 ted.mPointsInView = new Point[1]; 6118 ted.mPointsInView[0] = new Point(x, y); 6119 ted.mMetaState = ev.getMetaState(); 6120 ted.mReprocess = mDeferTouchProcess; 6121 ted.mNativeLayer = nativeScrollableLayer( 6122 contentX, contentY, 6123 ted.mNativeLayerRect, null); 6124 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6125 mTouchEventQueue.preQueueTouchEventData(ted); 6126 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6127 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6128 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6129 mTouchMode = TOUCH_DONE_MODE; 6130 } 6131 break; 6132 case TOUCH_INIT_MODE: // tap 6133 case TOUCH_SHORTPRESS_START_MODE: 6134 case TOUCH_SHORTPRESS_MODE: 6135 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6136 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6137 if (mConfirmMove) { 6138 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6139 " WebCore's response for touch down."); 6140 if (mPreventDefault != PREVENT_DEFAULT_YES 6141 && (computeMaxScrollX() > 0 6142 || computeMaxScrollY() > 0)) { 6143 // If the user has performed a very quick touch 6144 // sequence it is possible that we may get here 6145 // before WebCore has had a chance to process the events. 6146 // In this case, any call to preventDefault in the 6147 // JS touch handler will not have been executed yet. 6148 // Hence we will see both the UI (now) and WebCore 6149 // (when context switches) handling the event, 6150 // regardless of whether the web developer actually 6151 // doeses preventDefault in their touch handler. This 6152 // is the nature of our asynchronous touch model. 6153 6154 // we will not rewrite drag code here, but we 6155 // will try fling if it applies. 6156 WebViewCore.reducePriority(); 6157 // to get better performance, pause updating the 6158 // picture 6159 WebViewCore.pauseUpdatePicture(mWebViewCore); 6160 // fall through to TOUCH_DRAG_MODE 6161 } else { 6162 // WebKit may consume the touch event and modify 6163 // DOM. drawContentPicture() will be called with 6164 // animateSroll as true for better performance. 6165 // Force redraw in high-quality. 6166 invalidate(); 6167 break; 6168 } 6169 } else { 6170 if (mSelectingText) { 6171 // tapping on selection or controls does nothing 6172 if (!nativeHitSelection(contentX, contentY)) { 6173 selectionDone(); 6174 } 6175 break; 6176 } 6177 // only trigger double tap if the WebView is 6178 // scalable 6179 if (mTouchMode == TOUCH_INIT_MODE 6180 && (canZoomIn() || canZoomOut())) { 6181 mPrivateHandler.sendEmptyMessageDelayed( 6182 RELEASE_SINGLE_TAP, ViewConfiguration 6183 .getDoubleTapTimeout()); 6184 } else { 6185 doShortPress(); 6186 } 6187 break; 6188 } 6189 case TOUCH_DRAG_MODE: 6190 case TOUCH_DRAG_LAYER_MODE: 6191 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6192 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6193 // if the user waits a while w/o moving before the 6194 // up, we don't want to do a fling 6195 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6196 if (mVelocityTracker == null) { 6197 Log.e(LOGTAG, "Got null mVelocityTracker when " 6198 + "mPreventDefault = " 6199 + mPreventDefault 6200 + " mDeferTouchProcess = " 6201 + mDeferTouchProcess); 6202 } else { 6203 mVelocityTracker.addMovement(ev); 6204 } 6205 // set to MOTIONLESS_IGNORE so that it won't keep 6206 // removing and sending message in 6207 // drawCoreAndCursorRing() 6208 mHeldMotionless = MOTIONLESS_IGNORE; 6209 doFling(); 6210 break; 6211 } else { 6212 if (mScroller.springBack(mScrollX, mScrollY, 0, 6213 computeMaxScrollX(), 0, 6214 computeMaxScrollY())) { 6215 invalidate(); 6216 } 6217 } 6218 // redraw in high-quality, as we're done dragging 6219 mHeldMotionless = MOTIONLESS_TRUE; 6220 invalidate(); 6221 // fall through 6222 case TOUCH_DRAG_START_MODE: 6223 // TOUCH_DRAG_START_MODE should not happen for the real 6224 // device as we almost certain will get a MOVE. But this 6225 // is possible on emulator. 6226 mLastVelocity = 0; 6227 WebViewCore.resumePriority(); 6228 if (!mSelectingText) { 6229 WebViewCore.resumeUpdatePicture(mWebViewCore); 6230 } 6231 break; 6232 } 6233 stopTouch(); 6234 break; 6235 } 6236 case MotionEvent.ACTION_CANCEL: { 6237 if (mTouchMode == TOUCH_DRAG_MODE) { 6238 mScroller.springBack(mScrollX, mScrollY, 0, 6239 computeMaxScrollX(), 0, computeMaxScrollY()); 6240 invalidate(); 6241 } 6242 cancelWebCoreTouchEvent(contentX, contentY, false); 6243 cancelTouch(); 6244 break; 6245 } 6246 } 6247 return true; 6248 } 6249 6250 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6251 TouchEventData ted = new TouchEventData(); 6252 ted.mAction = ev.getActionMasked(); 6253 final int count = ev.getPointerCount(); 6254 ted.mIds = new int[count]; 6255 ted.mPoints = new Point[count]; 6256 ted.mPointsInView = new Point[count]; 6257 for (int c = 0; c < count; c++) { 6258 ted.mIds[c] = ev.getPointerId(c); 6259 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6260 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6261 ted.mPoints[c] = new Point(x, y); 6262 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6263 } 6264 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6265 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6266 ted.mActionIndex = ev.getActionIndex(); 6267 } 6268 ted.mMetaState = ev.getMetaState(); 6269 ted.mReprocess = true; 6270 ted.mMotionEvent = MotionEvent.obtain(ev); 6271 ted.mSequence = sequence; 6272 mTouchEventQueue.preQueueTouchEventData(ted); 6273 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6274 cancelLongPress(); 6275 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6276 } 6277 6278 void handleMultiTouchInWebView(MotionEvent ev) { 6279 if (DebugFlags.WEB_VIEW) { 6280 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6281 + " mTouchMode=" + mTouchMode 6282 + " numPointers=" + ev.getPointerCount() 6283 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6284 } 6285 6286 final ScaleGestureDetector detector = 6287 mZoomManager.getMultiTouchGestureDetector(); 6288 6289 // A few apps use WebView but don't instantiate gesture detector. 6290 // We don't need to support multi touch for them. 6291 if (detector == null) return; 6292 6293 float x = ev.getX(); 6294 float y = ev.getY(); 6295 6296 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6297 detector.onTouchEvent(ev); 6298 6299 if (detector.isInProgress()) { 6300 if (DebugFlags.WEB_VIEW) { 6301 Log.v(LOGTAG, "detector is in progress"); 6302 } 6303 mLastTouchTime = ev.getEventTime(); 6304 x = detector.getFocusX(); 6305 y = detector.getFocusY(); 6306 6307 cancelLongPress(); 6308 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6309 if (!mZoomManager.supportsPanDuringZoom()) { 6310 return; 6311 } 6312 mTouchMode = TOUCH_DRAG_MODE; 6313 if (mVelocityTracker == null) { 6314 mVelocityTracker = VelocityTracker.obtain(); 6315 } 6316 } 6317 } 6318 6319 int action = ev.getActionMasked(); 6320 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6321 cancelTouch(); 6322 action = MotionEvent.ACTION_DOWN; 6323 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() == 2) { 6324 // set mLastTouchX/Y to the remaining point 6325 mLastTouchX = Math.round(x); 6326 mLastTouchY = Math.round(y); 6327 } else if (action == MotionEvent.ACTION_MOVE) { 6328 // negative x or y indicate it is on the edge, skip it. 6329 if (x < 0 || y < 0) { 6330 return; 6331 } 6332 } 6333 6334 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6335 } 6336 6337 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6338 if (shouldForwardTouchEvent()) { 6339 if (removeEvents) { 6340 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6341 } 6342 TouchEventData ted = new TouchEventData(); 6343 ted.mIds = new int[1]; 6344 ted.mIds[0] = 0; 6345 ted.mPoints = new Point[1]; 6346 ted.mPoints[0] = new Point(x, y); 6347 ted.mPointsInView = new Point[1]; 6348 int viewX = contentToViewX(x) - mScrollX; 6349 int viewY = contentToViewY(y) - mScrollY; 6350 ted.mPointsInView[0] = new Point(viewX, viewY); 6351 ted.mAction = MotionEvent.ACTION_CANCEL; 6352 ted.mNativeLayer = nativeScrollableLayer( 6353 x, y, ted.mNativeLayerRect, null); 6354 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6355 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6356 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6357 6358 if (removeEvents) { 6359 // Mark this after sending the message above; we should 6360 // be willing to ignore the cancel event that we just sent. 6361 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6362 } 6363 } 6364 } 6365 6366 private void startTouch(float x, float y, long eventTime) { 6367 // Remember where the motion event started 6368 mStartTouchX = mLastTouchX = Math.round(x); 6369 mStartTouchY = mLastTouchY = Math.round(y); 6370 mLastTouchTime = eventTime; 6371 mVelocityTracker = VelocityTracker.obtain(); 6372 mSnapScrollMode = SNAP_NONE; 6373 } 6374 6375 private void startDrag() { 6376 WebViewCore.reducePriority(); 6377 // to get better performance, pause updating the picture 6378 WebViewCore.pauseUpdatePicture(mWebViewCore); 6379 if (!mDragFromTextInput) { 6380 nativeHideCursor(); 6381 } 6382 6383 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6384 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6385 mZoomManager.invokeZoomPicker(); 6386 } 6387 } 6388 6389 private void doDrag(int deltaX, int deltaY) { 6390 if ((deltaX | deltaY) != 0) { 6391 int oldX = mScrollX; 6392 int oldY = mScrollY; 6393 int rangeX = computeMaxScrollX(); 6394 int rangeY = computeMaxScrollY(); 6395 int overscrollDistance = mOverscrollDistance; 6396 6397 // Check for the original scrolling layer in case we change 6398 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6399 // reached the edge of a layer but mScrollingLayer will be non-zero 6400 // if we initiated the drag on a layer. 6401 if (mScrollingLayer != 0) { 6402 final int contentX = viewToContentDimension(deltaX); 6403 final int contentY = viewToContentDimension(deltaY); 6404 6405 // Check the scrolling bounds to see if we will actually do any 6406 // scrolling. The rectangle is in document coordinates. 6407 final int maxX = mScrollingLayerRect.right; 6408 final int maxY = mScrollingLayerRect.bottom; 6409 final int resultX = Math.max(0, 6410 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6411 final int resultY = Math.max(0, 6412 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6413 6414 if (resultX != mScrollingLayerRect.left || 6415 resultY != mScrollingLayerRect.top) { 6416 // In case we switched to dragging the page. 6417 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6418 deltaX = contentX; 6419 deltaY = contentY; 6420 oldX = mScrollingLayerRect.left; 6421 oldY = mScrollingLayerRect.top; 6422 rangeX = maxX; 6423 rangeY = maxY; 6424 } else { 6425 // Scroll the main page if we are not going to scroll the 6426 // layer. This does not reset mScrollingLayer in case the 6427 // user changes directions and the layer can scroll the 6428 // other way. 6429 mTouchMode = TOUCH_DRAG_MODE; 6430 } 6431 } 6432 6433 if (mOverScrollGlow != null) { 6434 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6435 } 6436 6437 overScrollBy(deltaX, deltaY, oldX, oldY, 6438 rangeX, rangeY, 6439 mOverscrollDistance, mOverscrollDistance, true); 6440 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6441 invalidate(); 6442 } 6443 } 6444 mZoomManager.keepZoomPickerVisible(); 6445 } 6446 6447 private void stopTouch() { 6448 // we also use mVelocityTracker == null to tell us that we are 6449 // not "moving around", so we can take the slower/prettier 6450 // mode in the drawing code 6451 if (mVelocityTracker != null) { 6452 mVelocityTracker.recycle(); 6453 mVelocityTracker = null; 6454 } 6455 6456 // Release any pulled glows 6457 if (mOverScrollGlow != null) { 6458 mOverScrollGlow.releaseAll(); 6459 } 6460 } 6461 6462 private void cancelTouch() { 6463 // we also use mVelocityTracker == null to tell us that we are 6464 // not "moving around", so we can take the slower/prettier 6465 // mode in the drawing code 6466 if (mVelocityTracker != null) { 6467 mVelocityTracker.recycle(); 6468 mVelocityTracker = null; 6469 } 6470 6471 if ((mTouchMode == TOUCH_DRAG_MODE 6472 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6473 WebViewCore.resumePriority(); 6474 WebViewCore.resumeUpdatePicture(mWebViewCore); 6475 } 6476 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6477 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6478 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6479 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6480 if (getSettings().supportTouchOnly()) { 6481 removeTouchHighlight(true); 6482 } 6483 mHeldMotionless = MOTIONLESS_TRUE; 6484 mTouchMode = TOUCH_DONE_MODE; 6485 nativeHideCursor(); 6486 } 6487 6488 @Override 6489 public boolean onGenericMotionEvent(MotionEvent event) { 6490 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6491 switch (event.getAction()) { 6492 case MotionEvent.ACTION_SCROLL: { 6493 final float vscroll; 6494 final float hscroll; 6495 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6496 vscroll = 0; 6497 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6498 } else { 6499 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6500 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6501 } 6502 if (hscroll != 0 || vscroll != 0) { 6503 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6504 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6505 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6506 return true; 6507 } 6508 } 6509 } 6510 } 6511 } 6512 return super.onGenericMotionEvent(event); 6513 } 6514 6515 private long mTrackballFirstTime = 0; 6516 private long mTrackballLastTime = 0; 6517 private float mTrackballRemainsX = 0.0f; 6518 private float mTrackballRemainsY = 0.0f; 6519 private int mTrackballXMove = 0; 6520 private int mTrackballYMove = 0; 6521 private boolean mSelectingText = false; 6522 private boolean mSelectionStarted = false; 6523 private boolean mExtendSelection = false; 6524 private boolean mDrawSelectionPointer = false; 6525 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6526 private static final int TRACKBALL_TIMEOUT = 200; 6527 private static final int TRACKBALL_WAIT = 100; 6528 private static final int TRACKBALL_SCALE = 400; 6529 private static final int TRACKBALL_SCROLL_COUNT = 5; 6530 private static final int TRACKBALL_MOVE_COUNT = 10; 6531 private static final int TRACKBALL_MULTIPLIER = 3; 6532 private static final int SELECT_CURSOR_OFFSET = 16; 6533 private static final int SELECT_SCROLL = 5; 6534 private int mSelectX = 0; 6535 private int mSelectY = 0; 6536 private boolean mFocusSizeChanged = false; 6537 private boolean mTrackballDown = false; 6538 private long mTrackballUpTime = 0; 6539 private long mLastCursorTime = 0; 6540 private Rect mLastCursorBounds; 6541 6542 // Set by default; BrowserActivity clears to interpret trackball data 6543 // directly for movement. Currently, the framework only passes 6544 // arrow key events, not trackball events, from one child to the next 6545 private boolean mMapTrackballToArrowKeys = true; 6546 6547 private DrawData mDelaySetPicture; 6548 private DrawData mLoadedPicture; 6549 6550 public void setMapTrackballToArrowKeys(boolean setMap) { 6551 checkThread(); 6552 mMapTrackballToArrowKeys = setMap; 6553 } 6554 6555 void resetTrackballTime() { 6556 mTrackballLastTime = 0; 6557 } 6558 6559 @Override 6560 public boolean onTrackballEvent(MotionEvent ev) { 6561 long time = ev.getEventTime(); 6562 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6563 if (ev.getY() > 0) pageDown(true); 6564 if (ev.getY() < 0) pageUp(true); 6565 return true; 6566 } 6567 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6568 if (mSelectingText) { 6569 return true; // discard press if copy in progress 6570 } 6571 mTrackballDown = true; 6572 if (mNativeClass == 0) { 6573 return false; 6574 } 6575 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6576 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6577 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6578 nativeSelectBestAt(mLastCursorBounds); 6579 } 6580 if (DebugFlags.WEB_VIEW) { 6581 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6582 + " time=" + time 6583 + " mLastCursorTime=" + mLastCursorTime); 6584 } 6585 if (isInTouchMode()) requestFocusFromTouch(); 6586 return false; // let common code in onKeyDown at it 6587 } 6588 if (ev.getAction() == MotionEvent.ACTION_UP) { 6589 // LONG_PRESS_CENTER is set in common onKeyDown 6590 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6591 mTrackballDown = false; 6592 mTrackballUpTime = time; 6593 if (mSelectingText) { 6594 if (mExtendSelection) { 6595 copySelection(); 6596 selectionDone(); 6597 } else { 6598 mExtendSelection = true; 6599 nativeSetExtendSelection(); 6600 invalidate(); // draw the i-beam instead of the arrow 6601 } 6602 return true; // discard press if copy in progress 6603 } 6604 if (DebugFlags.WEB_VIEW) { 6605 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6606 + " time=" + time 6607 ); 6608 } 6609 return false; // let common code in onKeyUp at it 6610 } 6611 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6612 AccessibilityManager.getInstance(mContext).isEnabled()) { 6613 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6614 return false; 6615 } 6616 if (mTrackballDown) { 6617 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6618 return true; // discard move if trackball is down 6619 } 6620 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6621 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6622 return true; 6623 } 6624 // TODO: alternatively we can do panning as touch does 6625 switchOutDrawHistory(); 6626 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6627 if (DebugFlags.WEB_VIEW) { 6628 Log.v(LOGTAG, "onTrackballEvent time=" 6629 + time + " last=" + mTrackballLastTime); 6630 } 6631 mTrackballFirstTime = time; 6632 mTrackballXMove = mTrackballYMove = 0; 6633 } 6634 mTrackballLastTime = time; 6635 if (DebugFlags.WEB_VIEW) { 6636 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6637 } 6638 mTrackballRemainsX += ev.getX(); 6639 mTrackballRemainsY += ev.getY(); 6640 doTrackball(time, ev.getMetaState()); 6641 return true; 6642 } 6643 6644 void moveSelection(float xRate, float yRate) { 6645 if (mNativeClass == 0) 6646 return; 6647 int width = getViewWidth(); 6648 int height = getViewHeight(); 6649 mSelectX += xRate; 6650 mSelectY += yRate; 6651 int maxX = width + mScrollX; 6652 int maxY = height + mScrollY; 6653 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6654 , mSelectX)); 6655 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6656 , mSelectY)); 6657 if (DebugFlags.WEB_VIEW) { 6658 Log.v(LOGTAG, "moveSelection" 6659 + " mSelectX=" + mSelectX 6660 + " mSelectY=" + mSelectY 6661 + " mScrollX=" + mScrollX 6662 + " mScrollY=" + mScrollY 6663 + " xRate=" + xRate 6664 + " yRate=" + yRate 6665 ); 6666 } 6667 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6668 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6669 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6670 : 0; 6671 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6672 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6673 : 0; 6674 pinScrollBy(scrollX, scrollY, true, 0); 6675 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6676 requestRectangleOnScreen(select); 6677 invalidate(); 6678 } 6679 6680 private int scaleTrackballX(float xRate, int width) { 6681 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6682 int nextXMove = xMove; 6683 if (xMove > 0) { 6684 if (xMove > mTrackballXMove) { 6685 xMove -= mTrackballXMove; 6686 } 6687 } else if (xMove < mTrackballXMove) { 6688 xMove -= mTrackballXMove; 6689 } 6690 mTrackballXMove = nextXMove; 6691 return xMove; 6692 } 6693 6694 private int scaleTrackballY(float yRate, int height) { 6695 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6696 int nextYMove = yMove; 6697 if (yMove > 0) { 6698 if (yMove > mTrackballYMove) { 6699 yMove -= mTrackballYMove; 6700 } 6701 } else if (yMove < mTrackballYMove) { 6702 yMove -= mTrackballYMove; 6703 } 6704 mTrackballYMove = nextYMove; 6705 return yMove; 6706 } 6707 6708 private int keyCodeToSoundsEffect(int keyCode) { 6709 switch(keyCode) { 6710 case KeyEvent.KEYCODE_DPAD_UP: 6711 return SoundEffectConstants.NAVIGATION_UP; 6712 case KeyEvent.KEYCODE_DPAD_RIGHT: 6713 return SoundEffectConstants.NAVIGATION_RIGHT; 6714 case KeyEvent.KEYCODE_DPAD_DOWN: 6715 return SoundEffectConstants.NAVIGATION_DOWN; 6716 case KeyEvent.KEYCODE_DPAD_LEFT: 6717 return SoundEffectConstants.NAVIGATION_LEFT; 6718 } 6719 throw new IllegalArgumentException("keyCode must be one of " + 6720 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6721 "KEYCODE_DPAD_LEFT}."); 6722 } 6723 6724 private void doTrackball(long time, int metaState) { 6725 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6726 if (elapsed == 0) { 6727 elapsed = TRACKBALL_TIMEOUT; 6728 } 6729 float xRate = mTrackballRemainsX * 1000 / elapsed; 6730 float yRate = mTrackballRemainsY * 1000 / elapsed; 6731 int viewWidth = getViewWidth(); 6732 int viewHeight = getViewHeight(); 6733 if (mSelectingText) { 6734 if (!mDrawSelectionPointer) { 6735 // The last selection was made by touch, disabling drawing the 6736 // selection pointer. Allow the trackball to adjust the 6737 // position of the touch control. 6738 mSelectX = contentToViewX(nativeSelectionX()); 6739 mSelectY = contentToViewY(nativeSelectionY()); 6740 mDrawSelectionPointer = mExtendSelection = true; 6741 nativeSetExtendSelection(); 6742 } 6743 moveSelection(scaleTrackballX(xRate, viewWidth), 6744 scaleTrackballY(yRate, viewHeight)); 6745 mTrackballRemainsX = mTrackballRemainsY = 0; 6746 return; 6747 } 6748 float ax = Math.abs(xRate); 6749 float ay = Math.abs(yRate); 6750 float maxA = Math.max(ax, ay); 6751 if (DebugFlags.WEB_VIEW) { 6752 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6753 + " xRate=" + xRate 6754 + " yRate=" + yRate 6755 + " mTrackballRemainsX=" + mTrackballRemainsX 6756 + " mTrackballRemainsY=" + mTrackballRemainsY); 6757 } 6758 int width = mContentWidth - viewWidth; 6759 int height = mContentHeight - viewHeight; 6760 if (width < 0) width = 0; 6761 if (height < 0) height = 0; 6762 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6763 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6764 maxA = Math.max(ax, ay); 6765 int count = Math.max(0, (int) maxA); 6766 int oldScrollX = mScrollX; 6767 int oldScrollY = mScrollY; 6768 if (count > 0) { 6769 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6770 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6771 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6772 KeyEvent.KEYCODE_DPAD_RIGHT; 6773 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6774 if (DebugFlags.WEB_VIEW) { 6775 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6776 + " count=" + count 6777 + " mTrackballRemainsX=" + mTrackballRemainsX 6778 + " mTrackballRemainsY=" + mTrackballRemainsY); 6779 } 6780 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6781 for (int i = 0; i < count; i++) { 6782 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6783 } 6784 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6785 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6786 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6787 } 6788 mTrackballRemainsX = mTrackballRemainsY = 0; 6789 } 6790 if (count >= TRACKBALL_SCROLL_COUNT) { 6791 int xMove = scaleTrackballX(xRate, width); 6792 int yMove = scaleTrackballY(yRate, height); 6793 if (DebugFlags.WEB_VIEW) { 6794 Log.v(LOGTAG, "doTrackball pinScrollBy" 6795 + " count=" + count 6796 + " xMove=" + xMove + " yMove=" + yMove 6797 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6798 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6799 ); 6800 } 6801 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6802 xMove = 0; 6803 } 6804 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6805 yMove = 0; 6806 } 6807 if (xMove != 0 || yMove != 0) { 6808 pinScrollBy(xMove, yMove, true, 0); 6809 } 6810 } 6811 } 6812 6813 /** 6814 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6815 * @return Maximum horizontal scroll position within real content 6816 */ 6817 int computeMaxScrollX() { 6818 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6819 } 6820 6821 /** 6822 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6823 * @return Maximum vertical scroll position within real content 6824 */ 6825 int computeMaxScrollY() { 6826 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6827 - getViewHeightWithTitle(), 0); 6828 } 6829 6830 boolean updateScrollCoordinates(int x, int y) { 6831 int oldX = mScrollX; 6832 int oldY = mScrollY; 6833 mScrollX = x; 6834 mScrollY = y; 6835 if (oldX != mScrollX || oldY != mScrollY) { 6836 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6837 return true; 6838 } else { 6839 return false; 6840 } 6841 } 6842 6843 public void flingScroll(int vx, int vy) { 6844 checkThread(); 6845 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6846 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6847 invalidate(); 6848 } 6849 6850 private void doFling() { 6851 if (mVelocityTracker == null) { 6852 return; 6853 } 6854 int maxX = computeMaxScrollX(); 6855 int maxY = computeMaxScrollY(); 6856 6857 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6858 int vx = (int) mVelocityTracker.getXVelocity(); 6859 int vy = (int) mVelocityTracker.getYVelocity(); 6860 6861 int scrollX = mScrollX; 6862 int scrollY = mScrollY; 6863 int overscrollDistance = mOverscrollDistance; 6864 int overflingDistance = mOverflingDistance; 6865 6866 // Use the layer's scroll data if applicable. 6867 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6868 scrollX = mScrollingLayerRect.left; 6869 scrollY = mScrollingLayerRect.top; 6870 maxX = mScrollingLayerRect.right; 6871 maxY = mScrollingLayerRect.bottom; 6872 // No overscrolling for layers. 6873 overscrollDistance = overflingDistance = 0; 6874 } 6875 6876 if (mSnapScrollMode != SNAP_NONE) { 6877 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6878 vy = 0; 6879 } else { 6880 vx = 0; 6881 } 6882 } 6883 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6884 WebViewCore.resumePriority(); 6885 if (!mSelectingText) { 6886 WebViewCore.resumeUpdatePicture(mWebViewCore); 6887 } 6888 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6889 invalidate(); 6890 } 6891 return; 6892 } 6893 float currentVelocity = mScroller.getCurrVelocity(); 6894 float velocity = (float) Math.hypot(vx, vy); 6895 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6896 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6897 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6898 - Math.atan2(vy, vx))); 6899 final float circle = (float) (Math.PI) * 2.0f; 6900 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6901 vx += currentVelocity * mLastVelX / mLastVelocity; 6902 vy += currentVelocity * mLastVelY / mLastVelocity; 6903 velocity = (float) Math.hypot(vx, vy); 6904 if (DebugFlags.WEB_VIEW) { 6905 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6906 } 6907 } else if (DebugFlags.WEB_VIEW) { 6908 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6909 } 6910 } else if (DebugFlags.WEB_VIEW) { 6911 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6912 + " current=" + currentVelocity 6913 + " vx=" + vx + " vy=" + vy 6914 + " maxX=" + maxX + " maxY=" + maxY 6915 + " scrollX=" + scrollX + " scrollY=" + scrollY 6916 + " layer=" + mScrollingLayer); 6917 } 6918 6919 // Allow sloppy flings without overscrolling at the edges. 6920 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6921 vx = 0; 6922 } 6923 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6924 vy = 0; 6925 } 6926 6927 if (overscrollDistance < overflingDistance) { 6928 if ((vx > 0 && scrollX == -overscrollDistance) || 6929 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6930 vx = 0; 6931 } 6932 if ((vy > 0 && scrollY == -overscrollDistance) || 6933 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6934 vy = 0; 6935 } 6936 } 6937 6938 mLastVelX = vx; 6939 mLastVelY = vy; 6940 mLastVelocity = velocity; 6941 6942 // no horizontal overscroll if the content just fits 6943 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6944 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6945 // Duration is calculated based on velocity. With range boundaries and overscroll 6946 // we may not know how long the final animation will take. (Hence the deprecation 6947 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6948 // resumes during this effect we will take a performance hit. See computeScroll; 6949 // we resume webcore there when the animation is finished. 6950 final int time = mScroller.getDuration(); 6951 6952 // Suppress scrollbars for layer scrolling. 6953 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6954 awakenScrollBars(time); 6955 } 6956 6957 invalidate(); 6958 } 6959 6960 /** 6961 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6962 * in charge of installing this view to the view hierarchy. This view will 6963 * become visible when the user starts scrolling via touch and fade away if 6964 * the user does not interact with it. 6965 * <p/> 6966 * API version 3 introduces a built-in zoom mechanism that is shown 6967 * automatically by the MapView. This is the preferred approach for 6968 * showing the zoom UI. 6969 * 6970 * @deprecated The built-in zoom mechanism is preferred, see 6971 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6972 */ 6973 @Deprecated 6974 public View getZoomControls() { 6975 checkThread(); 6976 if (!getSettings().supportZoom()) { 6977 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6978 return null; 6979 } 6980 return mZoomManager.getExternalZoomPicker(); 6981 } 6982 6983 void dismissZoomControl() { 6984 mZoomManager.dismissZoomPicker(); 6985 } 6986 6987 float getDefaultZoomScale() { 6988 return mZoomManager.getDefaultScale(); 6989 } 6990 6991 /** 6992 * @return TRUE if the WebView can be zoomed in. 6993 */ 6994 public boolean canZoomIn() { 6995 checkThread(); 6996 return mZoomManager.canZoomIn(); 6997 } 6998 6999 /** 7000 * @return TRUE if the WebView can be zoomed out. 7001 */ 7002 public boolean canZoomOut() { 7003 checkThread(); 7004 return mZoomManager.canZoomOut(); 7005 } 7006 7007 /** 7008 * Perform zoom in in the webview 7009 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7010 */ 7011 public boolean zoomIn() { 7012 checkThread(); 7013 return mZoomManager.zoomIn(); 7014 } 7015 7016 /** 7017 * Perform zoom out in the webview 7018 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7019 */ 7020 public boolean zoomOut() { 7021 checkThread(); 7022 return mZoomManager.zoomOut(); 7023 } 7024 7025 private void updateSelection() { 7026 if (mNativeClass == 0) { 7027 return; 7028 } 7029 // mLastTouchX and mLastTouchY are the point in the current viewport 7030 int contentX = viewToContentX(mLastTouchX + mScrollX); 7031 int contentY = viewToContentY(mLastTouchY + mScrollY); 7032 int slop = viewToContentDimension(mNavSlop); 7033 Rect rect = new Rect(contentX - slop, contentY - slop, 7034 contentX + slop, contentY + slop); 7035 nativeSelectBestAt(rect); 7036 mInitialHitTestResult = hitTestResult(null); 7037 } 7038 7039 /** 7040 * Scroll the focused text field to match the WebTextView 7041 * @param xPercent New x position of the WebTextView from 0 to 1. 7042 */ 7043 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7044 if (!inEditingMode() || mWebViewCore == null) { 7045 return; 7046 } 7047 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7048 new Float(xPercent)); 7049 } 7050 7051 /** 7052 * Scroll the focused textarea vertically to match the WebTextView 7053 * @param y New y position of the WebTextView in view coordinates 7054 */ 7055 /* package */ void scrollFocusedTextInputY(int y) { 7056 if (!inEditingMode() || mWebViewCore == null) { 7057 return; 7058 } 7059 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7060 } 7061 7062 /** 7063 * Set our starting point and time for a drag from the WebTextView. 7064 */ 7065 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7066 if (!inEditingMode()) { 7067 return; 7068 } 7069 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7070 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7071 mLastTouchTime = eventTime; 7072 if (!mScroller.isFinished()) { 7073 abortAnimation(); 7074 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 7075 } 7076 mSnapScrollMode = SNAP_NONE; 7077 mVelocityTracker = VelocityTracker.obtain(); 7078 mTouchMode = TOUCH_DRAG_START_MODE; 7079 } 7080 7081 /** 7082 * Given a motion event from the WebTextView, set its location to our 7083 * coordinates, and handle the event. 7084 */ 7085 /*package*/ boolean textFieldDrag(MotionEvent event) { 7086 if (!inEditingMode()) { 7087 return false; 7088 } 7089 mDragFromTextInput = true; 7090 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7091 (float) (mWebTextView.getTop() - mScrollY)); 7092 boolean result = onTouchEvent(event); 7093 mDragFromTextInput = false; 7094 return result; 7095 } 7096 7097 /** 7098 * Due a touch up from a WebTextView. This will be handled by webkit to 7099 * change the selection. 7100 * @param event MotionEvent in the WebTextView's coordinates. 7101 */ 7102 /*package*/ void touchUpOnTextField(MotionEvent event) { 7103 if (!inEditingMode()) { 7104 return; 7105 } 7106 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7107 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7108 int slop = viewToContentDimension(mNavSlop); 7109 nativeMotionUp(x, y, slop); 7110 } 7111 7112 /** 7113 * Called when pressing the center key or trackball on a textfield. 7114 */ 7115 /*package*/ void centerKeyPressOnTextField() { 7116 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7117 nativeCursorNodePointer()); 7118 } 7119 7120 private void doShortPress() { 7121 if (mNativeClass == 0) { 7122 return; 7123 } 7124 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7125 return; 7126 } 7127 mTouchMode = TOUCH_DONE_MODE; 7128 switchOutDrawHistory(); 7129 // mLastTouchX and mLastTouchY are the point in the current viewport 7130 int contentX = viewToContentX(mLastTouchX + mScrollX); 7131 int contentY = viewToContentY(mLastTouchY + mScrollY); 7132 int slop = viewToContentDimension(mNavSlop); 7133 if (getSettings().supportTouchOnly()) { 7134 removeTouchHighlight(false); 7135 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7136 // use "0" as generation id to inform WebKit to use the same x/y as 7137 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7138 touchUpData.mMoveGeneration = 0; 7139 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7140 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7141 WebViewCore.MotionUpData motionUpData = new WebViewCore 7142 .MotionUpData(); 7143 motionUpData.mFrame = nativeCacheHitFramePointer(); 7144 motionUpData.mNode = nativeCacheHitNodePointer(); 7145 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7146 motionUpData.mX = contentX; 7147 motionUpData.mY = contentY; 7148 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7149 motionUpData); 7150 } else { 7151 doMotionUp(contentX, contentY); 7152 } 7153 } 7154 7155 private void doMotionUp(int contentX, int contentY) { 7156 int slop = viewToContentDimension(mNavSlop); 7157 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7158 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7159 } 7160 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7161 playSoundEffect(SoundEffectConstants.CLICK); 7162 } 7163 } 7164 7165 /** 7166 * Returns plugin bounds if x/y in content coordinates corresponds to a 7167 * plugin. Otherwise a NULL rectangle is returned. 7168 */ 7169 Rect getPluginBounds(int x, int y) { 7170 int slop = viewToContentDimension(mNavSlop); 7171 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7172 return nativeCacheHitNodeBounds(); 7173 } else { 7174 return null; 7175 } 7176 } 7177 7178 /* 7179 * Return true if the rect (e.g. plugin) is fully visible and maximized 7180 * inside the WebView. 7181 */ 7182 boolean isRectFitOnScreen(Rect rect) { 7183 final int rectWidth = rect.width(); 7184 final int rectHeight = rect.height(); 7185 final int viewWidth = getViewWidth(); 7186 final int viewHeight = getViewHeightWithTitle(); 7187 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7188 scale = mZoomManager.computeScaleWithLimits(scale); 7189 return !mZoomManager.willScaleTriggerZoom(scale) 7190 && contentToViewX(rect.left) >= mScrollX 7191 && contentToViewX(rect.right) <= mScrollX + viewWidth 7192 && contentToViewY(rect.top) >= mScrollY 7193 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7194 } 7195 7196 /* 7197 * Maximize and center the rectangle, specified in the document coordinate 7198 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7199 * animated scroll to center it. If the zoom needs to be changed, find the 7200 * zoom center and do a smooth zoom transition. The rect is in document 7201 * coordinates 7202 */ 7203 void centerFitRect(Rect rect) { 7204 final int rectWidth = rect.width(); 7205 final int rectHeight = rect.height(); 7206 final int viewWidth = getViewWidth(); 7207 final int viewHeight = getViewHeightWithTitle(); 7208 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7209 / rectHeight); 7210 scale = mZoomManager.computeScaleWithLimits(scale); 7211 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7212 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7213 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7214 true, 0); 7215 } else { 7216 float actualScale = mZoomManager.getScale(); 7217 float oldScreenX = rect.left * actualScale - mScrollX; 7218 float rectViewX = rect.left * scale; 7219 float rectViewWidth = rectWidth * scale; 7220 float newMaxWidth = mContentWidth * scale; 7221 float newScreenX = (viewWidth - rectViewWidth) / 2; 7222 // pin the newX to the WebView 7223 if (newScreenX > rectViewX) { 7224 newScreenX = rectViewX; 7225 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7226 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7227 } 7228 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7229 / (scale - actualScale); 7230 float oldScreenY = rect.top * actualScale + getTitleHeight() 7231 - mScrollY; 7232 float rectViewY = rect.top * scale + getTitleHeight(); 7233 float rectViewHeight = rectHeight * scale; 7234 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7235 float newScreenY = (viewHeight - rectViewHeight) / 2; 7236 // pin the newY to the WebView 7237 if (newScreenY > rectViewY) { 7238 newScreenY = rectViewY; 7239 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7240 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7241 } 7242 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7243 / (scale - actualScale); 7244 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7245 mZoomManager.startZoomAnimation(scale, false); 7246 } 7247 } 7248 7249 // Called by JNI to handle a touch on a node representing an email address, 7250 // address, or phone number 7251 private void overrideLoading(String url) { 7252 mCallbackProxy.uiOverrideUrlLoading(url); 7253 } 7254 7255 @Override 7256 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7257 // FIXME: If a subwindow is showing find, and the user touches the 7258 // background window, it can steal focus. 7259 if (mFindIsUp) return false; 7260 boolean result = false; 7261 if (inEditingMode()) { 7262 result = mWebTextView.requestFocus(direction, 7263 previouslyFocusedRect); 7264 } else { 7265 result = super.requestFocus(direction, previouslyFocusedRect); 7266 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7267 // For cases such as GMail, where we gain focus from a direction, 7268 // we want to move to the first available link. 7269 // FIXME: If there are no visible links, we may not want to 7270 int fakeKeyDirection = 0; 7271 switch(direction) { 7272 case View.FOCUS_UP: 7273 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7274 break; 7275 case View.FOCUS_DOWN: 7276 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7277 break; 7278 case View.FOCUS_LEFT: 7279 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7280 break; 7281 case View.FOCUS_RIGHT: 7282 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7283 break; 7284 default: 7285 return result; 7286 } 7287 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7288 navHandledKey(fakeKeyDirection, 1, true, 0); 7289 } 7290 } 7291 } 7292 return result; 7293 } 7294 7295 @Override 7296 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7297 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7298 7299 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7300 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7301 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7302 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7303 7304 int measuredHeight = heightSize; 7305 int measuredWidth = widthSize; 7306 7307 // Grab the content size from WebViewCore. 7308 int contentHeight = contentToViewDimension(mContentHeight); 7309 int contentWidth = contentToViewDimension(mContentWidth); 7310 7311// Log.d(LOGTAG, "------- measure " + heightMode); 7312 7313 if (heightMode != MeasureSpec.EXACTLY) { 7314 mHeightCanMeasure = true; 7315 measuredHeight = contentHeight; 7316 if (heightMode == MeasureSpec.AT_MOST) { 7317 // If we are larger than the AT_MOST height, then our height can 7318 // no longer be measured and we should scroll internally. 7319 if (measuredHeight > heightSize) { 7320 measuredHeight = heightSize; 7321 mHeightCanMeasure = false; 7322 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7323 } 7324 } 7325 } else { 7326 mHeightCanMeasure = false; 7327 } 7328 if (mNativeClass != 0) { 7329 nativeSetHeightCanMeasure(mHeightCanMeasure); 7330 } 7331 // For the width, always use the given size unless unspecified. 7332 if (widthMode == MeasureSpec.UNSPECIFIED) { 7333 mWidthCanMeasure = true; 7334 measuredWidth = contentWidth; 7335 } else { 7336 if (measuredWidth < contentWidth) { 7337 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7338 } 7339 mWidthCanMeasure = false; 7340 } 7341 7342 synchronized (this) { 7343 setMeasuredDimension(measuredWidth, measuredHeight); 7344 } 7345 } 7346 7347 @Override 7348 public boolean requestChildRectangleOnScreen(View child, 7349 Rect rect, 7350 boolean immediate) { 7351 if (mNativeClass == 0) { 7352 return false; 7353 } 7354 // don't scroll while in zoom animation. When it is done, we will adjust 7355 // the necessary components (e.g., WebTextView if it is in editing mode) 7356 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7357 return false; 7358 } 7359 7360 rect.offset(child.getLeft() - child.getScrollX(), 7361 child.getTop() - child.getScrollY()); 7362 7363 Rect content = new Rect(viewToContentX(mScrollX), 7364 viewToContentY(mScrollY), 7365 viewToContentX(mScrollX + getWidth() 7366 - getVerticalScrollbarWidth()), 7367 viewToContentY(mScrollY + getViewHeightWithTitle())); 7368 content = nativeSubtractLayers(content); 7369 int screenTop = contentToViewY(content.top); 7370 int screenBottom = contentToViewY(content.bottom); 7371 int height = screenBottom - screenTop; 7372 int scrollYDelta = 0; 7373 7374 if (rect.bottom > screenBottom) { 7375 int oneThirdOfScreenHeight = height / 3; 7376 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7377 // If the rectangle is too tall to fit in the bottom two thirds 7378 // of the screen, place it at the top. 7379 scrollYDelta = rect.top - screenTop; 7380 } else { 7381 // If the rectangle will still fit on screen, we want its 7382 // top to be in the top third of the screen. 7383 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7384 } 7385 } else if (rect.top < screenTop) { 7386 scrollYDelta = rect.top - screenTop; 7387 } 7388 7389 int screenLeft = contentToViewX(content.left); 7390 int screenRight = contentToViewX(content.right); 7391 int width = screenRight - screenLeft; 7392 int scrollXDelta = 0; 7393 7394 if (rect.right > screenRight && rect.left > screenLeft) { 7395 if (rect.width() > width) { 7396 scrollXDelta += (rect.left - screenLeft); 7397 } else { 7398 scrollXDelta += (rect.right - screenRight); 7399 } 7400 } else if (rect.left < screenLeft) { 7401 scrollXDelta -= (screenLeft - rect.left); 7402 } 7403 7404 if ((scrollYDelta | scrollXDelta) != 0) { 7405 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7406 } 7407 7408 return false; 7409 } 7410 7411 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7412 String replace, int newStart, int newEnd) { 7413 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7414 arg.mReplace = replace; 7415 arg.mNewStart = newStart; 7416 arg.mNewEnd = newEnd; 7417 mTextGeneration++; 7418 arg.mTextGeneration = mTextGeneration; 7419 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7420 } 7421 7422 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7423 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7424 arg.mEvent = event; 7425 arg.mCurrentText = currentText; 7426 // Increase our text generation number, and pass it to webcore thread 7427 mTextGeneration++; 7428 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7429 // WebKit's document state is not saved until about to leave the page. 7430 // To make sure the host application, like Browser, has the up to date 7431 // document state when it goes to background, we force to save the 7432 // document state. 7433 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7434 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7435 cursorData(), 1000); 7436 } 7437 7438 /** 7439 * @hide 7440 */ 7441 public synchronized WebViewCore getWebViewCore() { 7442 return mWebViewCore; 7443 } 7444 7445 /** 7446 * Used only by TouchEventQueue to store pending touch events. 7447 */ 7448 private static class QueuedTouch { 7449 long mSequence; 7450 MotionEvent mEvent; // Optional 7451 TouchEventData mTed; // Optional 7452 7453 QueuedTouch mNext; 7454 7455 public QueuedTouch set(TouchEventData ted) { 7456 mSequence = ted.mSequence; 7457 mTed = ted; 7458 mEvent = null; 7459 mNext = null; 7460 return this; 7461 } 7462 7463 public QueuedTouch set(MotionEvent ev, long sequence) { 7464 mEvent = MotionEvent.obtain(ev); 7465 mSequence = sequence; 7466 mTed = null; 7467 mNext = null; 7468 return this; 7469 } 7470 7471 public QueuedTouch add(QueuedTouch other) { 7472 if (other.mSequence < mSequence) { 7473 other.mNext = this; 7474 return other; 7475 } 7476 7477 QueuedTouch insertAt = this; 7478 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7479 insertAt = insertAt.mNext; 7480 } 7481 other.mNext = insertAt.mNext; 7482 insertAt.mNext = other; 7483 return this; 7484 } 7485 } 7486 7487 /** 7488 * WebView handles touch events asynchronously since some events must be passed to WebKit 7489 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7490 * of which path they take to ensure that no events are ever processed out of order 7491 * by WebView. 7492 */ 7493 private class TouchEventQueue { 7494 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7495 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7496 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7497 7498 // Events waiting to be processed. 7499 private QueuedTouch mTouchEventQueue; 7500 7501 // Known events that are waiting on a response before being enqueued. 7502 private QueuedTouch mPreQueue; 7503 7504 // Pool of QueuedTouch objects saved for later use. 7505 private QueuedTouch mQueuedTouchRecycleBin; 7506 private int mQueuedTouchRecycleCount; 7507 7508 private long mLastEventTime = Long.MAX_VALUE; 7509 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7510 7511 // milliseconds until we abandon hope of getting all of a previous gesture 7512 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7513 7514 private QueuedTouch obtainQueuedTouch() { 7515 if (mQueuedTouchRecycleBin != null) { 7516 QueuedTouch result = mQueuedTouchRecycleBin; 7517 mQueuedTouchRecycleBin = result.mNext; 7518 mQueuedTouchRecycleCount--; 7519 return result; 7520 } 7521 return new QueuedTouch(); 7522 } 7523 7524 /** 7525 * Allow events with any currently missing sequence numbers to be skipped in processing. 7526 */ 7527 public void ignoreCurrentlyMissingEvents() { 7528 mIgnoreUntilSequence = mNextTouchSequence; 7529 7530 // Run any events we have available and complete, pre-queued or otherwise. 7531 runQueuedAndPreQueuedEvents(); 7532 } 7533 7534 private void runQueuedAndPreQueuedEvents() { 7535 QueuedTouch qd = mPreQueue; 7536 boolean fromPreQueue = true; 7537 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7538 handleQueuedTouch(qd); 7539 QueuedTouch recycleMe = qd; 7540 if (fromPreQueue) { 7541 mPreQueue = qd.mNext; 7542 } else { 7543 mTouchEventQueue = qd.mNext; 7544 } 7545 recycleQueuedTouch(recycleMe); 7546 mLastHandledTouchSequence++; 7547 7548 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7549 long nextQueued = mTouchEventQueue != null ? 7550 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7551 fromPreQueue = nextPre < nextQueued; 7552 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7553 } 7554 } 7555 7556 /** 7557 * Add a TouchEventData to the pre-queue. 7558 * 7559 * An event in the pre-queue is an event that we know about that 7560 * has been sent to webkit, but that we haven't received back and 7561 * enqueued into the normal touch queue yet. If webkit ever times 7562 * out and we need to ignore currently missing events, we'll run 7563 * events from the pre-queue to patch the holes. 7564 * 7565 * @param ted TouchEventData to pre-queue 7566 */ 7567 public void preQueueTouchEventData(TouchEventData ted) { 7568 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7569 if (mPreQueue == null) { 7570 mPreQueue = newTouch; 7571 } else { 7572 QueuedTouch insertionPoint = mPreQueue; 7573 while (insertionPoint.mNext != null && 7574 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7575 insertionPoint = insertionPoint.mNext; 7576 } 7577 newTouch.mNext = insertionPoint.mNext; 7578 insertionPoint.mNext = newTouch; 7579 } 7580 } 7581 7582 private void recycleQueuedTouch(QueuedTouch qd) { 7583 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7584 qd.mNext = mQueuedTouchRecycleBin; 7585 mQueuedTouchRecycleBin = qd; 7586 mQueuedTouchRecycleCount++; 7587 } 7588 } 7589 7590 /** 7591 * Reset the touch event queue. This will dump any pending events 7592 * and reset the sequence numbering. 7593 */ 7594 public void reset() { 7595 mNextTouchSequence = Long.MIN_VALUE + 1; 7596 mLastHandledTouchSequence = Long.MIN_VALUE; 7597 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7598 while (mTouchEventQueue != null) { 7599 QueuedTouch recycleMe = mTouchEventQueue; 7600 mTouchEventQueue = mTouchEventQueue.mNext; 7601 recycleQueuedTouch(recycleMe); 7602 } 7603 while (mPreQueue != null) { 7604 QueuedTouch recycleMe = mPreQueue; 7605 mPreQueue = mPreQueue.mNext; 7606 recycleQueuedTouch(recycleMe); 7607 } 7608 } 7609 7610 /** 7611 * Return the next valid sequence number for tagging incoming touch events. 7612 * @return The next touch event sequence number 7613 */ 7614 public long nextTouchSequence() { 7615 return mNextTouchSequence++; 7616 } 7617 7618 /** 7619 * Enqueue a touch event in the form of TouchEventData. 7620 * The sequence number will be read from the mSequence field of the argument. 7621 * 7622 * If the touch event's sequence number is the next in line to be processed, it will 7623 * be handled before this method returns. Any subsequent events that have already 7624 * been queued will also be processed in their proper order. 7625 * 7626 * @param ted Touch data to be processed in order. 7627 * @return true if the event was processed before returning, false if it was just enqueued. 7628 */ 7629 public boolean enqueueTouchEvent(TouchEventData ted) { 7630 // Remove from the pre-queue if present 7631 QueuedTouch preQueue = mPreQueue; 7632 if (preQueue != null) { 7633 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7634 // if it was present in the pre-queue, and removed from the pre-queue itself. 7635 if (preQueue.mSequence == ted.mSequence) { 7636 mPreQueue = preQueue.mNext; 7637 } else { 7638 QueuedTouch prev = preQueue; 7639 preQueue = null; 7640 while (prev.mNext != null) { 7641 if (prev.mNext.mSequence == ted.mSequence) { 7642 preQueue = prev.mNext; 7643 prev.mNext = preQueue.mNext; 7644 break; 7645 } else { 7646 prev = prev.mNext; 7647 } 7648 } 7649 } 7650 } 7651 7652 if (ted.mSequence < mLastHandledTouchSequence) { 7653 // Stale event and we already moved on; drop it. (Should not be common.) 7654 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7655 " received from webcore; ignoring"); 7656 return false; 7657 } 7658 7659 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7660 return false; 7661 } 7662 7663 // dropStaleGestures above might have fast-forwarded us to 7664 // an event we have already. 7665 runNextQueuedEvents(); 7666 7667 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7668 if (preQueue != null) { 7669 recycleQueuedTouch(preQueue); 7670 preQueue = null; 7671 } 7672 handleQueuedTouchEventData(ted); 7673 7674 mLastHandledTouchSequence++; 7675 7676 // Do we have any more? Run them if so. 7677 runNextQueuedEvents(); 7678 } else { 7679 // Reuse the pre-queued object if we had it. 7680 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 7681 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7682 } 7683 return true; 7684 } 7685 7686 /** 7687 * Enqueue a touch event in the form of a MotionEvent from the framework. 7688 * 7689 * If the touch event's sequence number is the next in line to be processed, it will 7690 * be handled before this method returns. Any subsequent events that have already 7691 * been queued will also be processed in their proper order. 7692 * 7693 * @param ev MotionEvent to be processed in order 7694 */ 7695 public void enqueueTouchEvent(MotionEvent ev) { 7696 final long sequence = nextTouchSequence(); 7697 7698 if (dropStaleGestures(ev, sequence)) { 7699 return; 7700 } 7701 7702 // dropStaleGestures above might have fast-forwarded us to 7703 // an event we have already. 7704 runNextQueuedEvents(); 7705 7706 if (mLastHandledTouchSequence + 1 == sequence) { 7707 handleQueuedMotionEvent(ev); 7708 7709 mLastHandledTouchSequence++; 7710 7711 // Do we have any more? Run them if so. 7712 runNextQueuedEvents(); 7713 } else { 7714 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7715 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7716 } 7717 } 7718 7719 private void runNextQueuedEvents() { 7720 QueuedTouch qd = mTouchEventQueue; 7721 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7722 handleQueuedTouch(qd); 7723 QueuedTouch recycleMe = qd; 7724 qd = qd.mNext; 7725 recycleQueuedTouch(recycleMe); 7726 mLastHandledTouchSequence++; 7727 } 7728 mTouchEventQueue = qd; 7729 } 7730 7731 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7732 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7733 // This is to make sure that we don't attempt to process a tap 7734 // or long press when webkit takes too long to get back to us. 7735 // The movement will be properly confirmed when we process the 7736 // enqueued event later. 7737 final int dx = Math.round(ev.getX()) - mLastTouchX; 7738 final int dy = Math.round(ev.getY()) - mLastTouchY; 7739 if (dx * dx + dy * dy > mTouchSlopSquare) { 7740 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7741 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7742 } 7743 } 7744 7745 if (mTouchEventQueue == null) { 7746 return sequence <= mLastHandledTouchSequence; 7747 } 7748 7749 // If we have a new down event and it's been a while since the last event 7750 // we saw, catch up as best we can and keep going. 7751 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 7752 long eventTime = ev.getEventTime(); 7753 long lastHandledEventTime = mLastEventTime; 7754 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 7755 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7756 "Catching up."); 7757 runQueuedAndPreQueuedEvents(); 7758 7759 // Drop leftovers that we truly don't have. 7760 QueuedTouch qd = mTouchEventQueue; 7761 while (qd != null && qd.mSequence < sequence) { 7762 QueuedTouch recycleMe = qd; 7763 qd = qd.mNext; 7764 recycleQueuedTouch(recycleMe); 7765 } 7766 mTouchEventQueue = qd; 7767 mLastHandledTouchSequence = sequence - 1; 7768 } 7769 } 7770 7771 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 7772 QueuedTouch qd = mTouchEventQueue; 7773 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7774 QueuedTouch recycleMe = qd; 7775 qd = qd.mNext; 7776 recycleQueuedTouch(recycleMe); 7777 } 7778 mTouchEventQueue = qd; 7779 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 7780 } 7781 7782 if (mPreQueue != null) { 7783 // Drop stale prequeued events 7784 QueuedTouch qd = mPreQueue; 7785 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7786 QueuedTouch recycleMe = qd; 7787 qd = qd.mNext; 7788 recycleQueuedTouch(recycleMe); 7789 } 7790 mPreQueue = qd; 7791 } 7792 7793 return sequence <= mLastHandledTouchSequence; 7794 } 7795 7796 private void handleQueuedTouch(QueuedTouch qt) { 7797 if (qt.mTed != null) { 7798 handleQueuedTouchEventData(qt.mTed); 7799 } else { 7800 handleQueuedMotionEvent(qt.mEvent); 7801 qt.mEvent.recycle(); 7802 } 7803 } 7804 7805 private void handleQueuedMotionEvent(MotionEvent ev) { 7806 mLastEventTime = ev.getEventTime(); 7807 int action = ev.getActionMasked(); 7808 if (ev.getPointerCount() > 1) { // Multi-touch 7809 handleMultiTouchInWebView(ev); 7810 } else { 7811 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 7812 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 7813 // ScaleGestureDetector needs a consistent event stream to operate properly. 7814 // It won't take any action with fewer than two pointers, but it needs to 7815 // update internal bookkeeping state. 7816 detector.onTouchEvent(ev); 7817 } 7818 7819 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 7820 } 7821 } 7822 7823 private void handleQueuedTouchEventData(TouchEventData ted) { 7824 if (ted.mMotionEvent != null) { 7825 mLastEventTime = ted.mMotionEvent.getEventTime(); 7826 } 7827 if (!ted.mReprocess) { 7828 if (ted.mAction == MotionEvent.ACTION_DOWN 7829 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7830 // if prevent default is called from WebCore, UI 7831 // will not handle the rest of the touch events any 7832 // more. 7833 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7834 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7835 } else if (ted.mAction == MotionEvent.ACTION_MOVE 7836 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7837 // the return for the first ACTION_MOVE will decide 7838 // whether UI will handle touch or not. Currently no 7839 // support for alternating prevent default 7840 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7841 : PREVENT_DEFAULT_NO; 7842 } 7843 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7844 mTouchHighlightRegion.setEmpty(); 7845 } 7846 } else { 7847 if (ted.mPoints.length > 1) { // multi-touch 7848 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 7849 mPreventDefault = PREVENT_DEFAULT_NO; 7850 handleMultiTouchInWebView(ted.mMotionEvent); 7851 } else { 7852 mPreventDefault = PREVENT_DEFAULT_YES; 7853 } 7854 return; 7855 } 7856 7857 // prevent default is not called in WebCore, so the 7858 // message needs to be reprocessed in UI 7859 if (!ted.mNativeResult) { 7860 // Following is for single touch. 7861 switch (ted.mAction) { 7862 case MotionEvent.ACTION_DOWN: 7863 mLastDeferTouchX = ted.mPointsInView[0].x; 7864 mLastDeferTouchY = ted.mPointsInView[0].y; 7865 mDeferTouchMode = TOUCH_INIT_MODE; 7866 break; 7867 case MotionEvent.ACTION_MOVE: { 7868 // no snapping in defer process 7869 int x = ted.mPointsInView[0].x; 7870 int y = ted.mPointsInView[0].y; 7871 7872 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7873 mDeferTouchMode = TOUCH_DRAG_MODE; 7874 mLastDeferTouchX = x; 7875 mLastDeferTouchY = y; 7876 startScrollingLayer(x, y); 7877 startDrag(); 7878 } 7879 int deltaX = pinLocX((int) (mScrollX 7880 + mLastDeferTouchX - x)) 7881 - mScrollX; 7882 int deltaY = pinLocY((int) (mScrollY 7883 + mLastDeferTouchY - y)) 7884 - mScrollY; 7885 doDrag(deltaX, deltaY); 7886 if (deltaX != 0) mLastDeferTouchX = x; 7887 if (deltaY != 0) mLastDeferTouchY = y; 7888 break; 7889 } 7890 case MotionEvent.ACTION_UP: 7891 case MotionEvent.ACTION_CANCEL: 7892 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7893 // no fling in defer process 7894 mScroller.springBack(mScrollX, mScrollY, 0, 7895 computeMaxScrollX(), 0, 7896 computeMaxScrollY()); 7897 invalidate(); 7898 WebViewCore.resumePriority(); 7899 WebViewCore.resumeUpdatePicture(mWebViewCore); 7900 } 7901 mDeferTouchMode = TOUCH_DONE_MODE; 7902 break; 7903 case WebViewCore.ACTION_DOUBLETAP: 7904 // doDoubleTap() needs mLastTouchX/Y as anchor 7905 mLastDeferTouchX = ted.mPointsInView[0].x; 7906 mLastDeferTouchY = ted.mPointsInView[0].y; 7907 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7908 mDeferTouchMode = TOUCH_DONE_MODE; 7909 break; 7910 case WebViewCore.ACTION_LONGPRESS: 7911 HitTestResult hitTest = getHitTestResult(); 7912 if (hitTest != null && hitTest.mType 7913 != HitTestResult.UNKNOWN_TYPE) { 7914 performLongClick(); 7915 } 7916 mDeferTouchMode = TOUCH_DONE_MODE; 7917 break; 7918 } 7919 } 7920 } 7921 } 7922 } 7923 7924 //------------------------------------------------------------------------- 7925 // Methods can be called from a separate thread, like WebViewCore 7926 // If it needs to call the View system, it has to send message. 7927 //------------------------------------------------------------------------- 7928 7929 /** 7930 * General handler to receive message coming from webkit thread 7931 */ 7932 class PrivateHandler extends Handler { 7933 @Override 7934 public void handleMessage(Message msg) { 7935 // exclude INVAL_RECT_MSG_ID since it is frequently output 7936 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7937 if (msg.what >= FIRST_PRIVATE_MSG_ID 7938 && msg.what <= LAST_PRIVATE_MSG_ID) { 7939 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7940 - FIRST_PRIVATE_MSG_ID]); 7941 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7942 && msg.what <= LAST_PACKAGE_MSG_ID) { 7943 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7944 - FIRST_PACKAGE_MSG_ID]); 7945 } else { 7946 Log.v(LOGTAG, Integer.toString(msg.what)); 7947 } 7948 } 7949 if (mWebViewCore == null) { 7950 // after WebView's destroy() is called, skip handling messages. 7951 return; 7952 } 7953 if (mBlockWebkitViewMessages 7954 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 7955 // Blocking messages from webkit 7956 return; 7957 } 7958 switch (msg.what) { 7959 case REMEMBER_PASSWORD: { 7960 mDatabase.setUsernamePassword( 7961 msg.getData().getString("host"), 7962 msg.getData().getString("username"), 7963 msg.getData().getString("password")); 7964 ((Message) msg.obj).sendToTarget(); 7965 break; 7966 } 7967 case NEVER_REMEMBER_PASSWORD: { 7968 mDatabase.setUsernamePassword( 7969 msg.getData().getString("host"), null, null); 7970 ((Message) msg.obj).sendToTarget(); 7971 break; 7972 } 7973 case PREVENT_DEFAULT_TIMEOUT: { 7974 // if timeout happens, cancel it so that it won't block UI 7975 // to continue handling touch events 7976 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7977 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7978 || (msg.arg1 == MotionEvent.ACTION_MOVE 7979 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7980 cancelWebCoreTouchEvent( 7981 viewToContentX(mLastTouchX + mScrollX), 7982 viewToContentY(mLastTouchY + mScrollY), 7983 true); 7984 } 7985 break; 7986 } 7987 case SCROLL_SELECT_TEXT: { 7988 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7989 mSentAutoScrollMessage = false; 7990 break; 7991 } 7992 if (mScrollingLayer == 0) { 7993 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7994 } else { 7995 mScrollingLayerRect.left += mAutoScrollX; 7996 mScrollingLayerRect.top += mAutoScrollY; 7997 nativeScrollLayer(mScrollingLayer, 7998 mScrollingLayerRect.left, 7999 mScrollingLayerRect.top); 8000 invalidate(); 8001 } 8002 sendEmptyMessageDelayed( 8003 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8004 break; 8005 } 8006 case SWITCH_TO_SHORTPRESS: { 8007 mInitialHitTestResult = null; // set by updateSelection() 8008 if (mTouchMode == TOUCH_INIT_MODE) { 8009 if (!getSettings().supportTouchOnly() 8010 && mPreventDefault != PREVENT_DEFAULT_YES) { 8011 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8012 updateSelection(); 8013 } else { 8014 // set to TOUCH_SHORTPRESS_MODE so that it won't 8015 // trigger double tap any more 8016 mTouchMode = TOUCH_SHORTPRESS_MODE; 8017 } 8018 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8019 mTouchMode = TOUCH_DONE_MODE; 8020 } 8021 break; 8022 } 8023 case SWITCH_TO_LONGPRESS: { 8024 if (getSettings().supportTouchOnly()) { 8025 removeTouchHighlight(false); 8026 } 8027 if (inFullScreenMode() || mDeferTouchProcess) { 8028 TouchEventData ted = new TouchEventData(); 8029 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8030 ted.mIds = new int[1]; 8031 ted.mIds[0] = 0; 8032 ted.mPoints = new Point[1]; 8033 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8034 viewToContentY(mLastTouchY + mScrollY)); 8035 ted.mPointsInView = new Point[1]; 8036 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8037 // metaState for long press is tricky. Should it be the 8038 // state when the press started or when the press was 8039 // released? Or some intermediary key state? For 8040 // simplicity for now, we don't set it. 8041 ted.mMetaState = 0; 8042 ted.mReprocess = mDeferTouchProcess; 8043 ted.mNativeLayer = nativeScrollableLayer( 8044 ted.mPoints[0].x, ted.mPoints[0].y, 8045 ted.mNativeLayerRect, null); 8046 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8047 mTouchEventQueue.preQueueTouchEventData(ted); 8048 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8049 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8050 mTouchMode = TOUCH_DONE_MODE; 8051 performLongClick(); 8052 } 8053 break; 8054 } 8055 case RELEASE_SINGLE_TAP: { 8056 doShortPress(); 8057 break; 8058 } 8059 case SCROLL_TO_MSG_ID: { 8060 // arg1 = animate, arg2 = onlyIfImeIsShowing 8061 // obj = Point(x, y) 8062 if (msg.arg2 == 1) { 8063 // This scroll is intended to bring the textfield into 8064 // view, but is only necessary if the IME is showing 8065 InputMethodManager imm = InputMethodManager.peekInstance(); 8066 if (imm == null || !imm.isAcceptingText() 8067 || (!imm.isActive(WebView.this) && (!inEditingMode() 8068 || !imm.isActive(mWebTextView)))) { 8069 break; 8070 } 8071 } 8072 final Point p = (Point) msg.obj; 8073 if (msg.arg1 == 1) { 8074 spawnContentScrollTo(p.x, p.y); 8075 } else { 8076 setContentScrollTo(p.x, p.y); 8077 } 8078 break; 8079 } 8080 case UPDATE_ZOOM_RANGE: { 8081 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8082 // mScrollX contains the new minPrefWidth 8083 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8084 break; 8085 } 8086 case REPLACE_BASE_CONTENT: { 8087 nativeReplaceBaseContent(msg.arg1); 8088 break; 8089 } 8090 case NEW_PICTURE_MSG_ID: { 8091 // called for new content 8092 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8093 setNewPicture(draw, true); 8094 break; 8095 } 8096 case WEBCORE_INITIALIZED_MSG_ID: 8097 // nativeCreate sets mNativeClass to a non-zero value 8098 String drawableDir = BrowserFrame.getRawResFilename( 8099 BrowserFrame.DRAWABLEDIR, mContext); 8100 AssetManager am = mContext.getAssets(); 8101 nativeCreate(msg.arg1, drawableDir, am); 8102 if (mDelaySetPicture != null) { 8103 setNewPicture(mDelaySetPicture, true); 8104 mDelaySetPicture = null; 8105 } 8106 break; 8107 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8108 // Make sure that the textfield is currently focused 8109 // and representing the same node as the pointer. 8110 if (inEditingMode() && 8111 mWebTextView.isSameTextField(msg.arg1)) { 8112 if (msg.getData().getBoolean("password")) { 8113 Spannable text = (Spannable) mWebTextView.getText(); 8114 int start = Selection.getSelectionStart(text); 8115 int end = Selection.getSelectionEnd(text); 8116 mWebTextView.setInPassword(true); 8117 // Restore the selection, which may have been 8118 // ruined by setInPassword. 8119 Spannable pword = 8120 (Spannable) mWebTextView.getText(); 8121 Selection.setSelection(pword, start, end); 8122 // If the text entry has created more events, ignore 8123 // this one. 8124 } else if (msg.arg2 == mTextGeneration) { 8125 String text = (String) msg.obj; 8126 if (null == text) { 8127 text = ""; 8128 } 8129 mWebTextView.setTextAndKeepSelection(text); 8130 } 8131 } 8132 break; 8133 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8134 displaySoftKeyboard(true); 8135 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8136 case UPDATE_TEXT_SELECTION_MSG_ID: 8137 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8138 (WebViewCore.TextSelectionData) msg.obj); 8139 break; 8140 case FORM_DID_BLUR: 8141 if (inEditingMode() 8142 && mWebTextView.isSameTextField(msg.arg1)) { 8143 hideSoftKeyboard(); 8144 } 8145 break; 8146 case RETURN_LABEL: 8147 if (inEditingMode() 8148 && mWebTextView.isSameTextField(msg.arg1)) { 8149 mWebTextView.setHint((String) msg.obj); 8150 InputMethodManager imm 8151 = InputMethodManager.peekInstance(); 8152 // The hint is propagated to the IME in 8153 // onCreateInputConnection. If the IME is already 8154 // active, restart it so that its hint text is updated. 8155 if (imm != null && imm.isActive(mWebTextView)) { 8156 imm.restartInput(mWebTextView); 8157 } 8158 } 8159 break; 8160 case UNHANDLED_NAV_KEY: 8161 navHandledKey(msg.arg1, 1, false, 0); 8162 break; 8163 case UPDATE_TEXT_ENTRY_MSG_ID: 8164 // this is sent after finishing resize in WebViewCore. Make 8165 // sure the text edit box is still on the screen. 8166 if (inEditingMode() && nativeCursorIsTextInput()) { 8167 rebuildWebTextView(); 8168 } 8169 break; 8170 case CLEAR_TEXT_ENTRY: 8171 clearTextEntry(); 8172 break; 8173 case INVAL_RECT_MSG_ID: { 8174 Rect r = (Rect)msg.obj; 8175 if (r == null) { 8176 invalidate(); 8177 } else { 8178 // we need to scale r from content into view coords, 8179 // which viewInvalidate() does for us 8180 viewInvalidate(r.left, r.top, r.right, r.bottom); 8181 } 8182 break; 8183 } 8184 case REQUEST_FORM_DATA: 8185 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8186 if (mWebTextView.isSameTextField(msg.arg1)) { 8187 mWebTextView.setAdapterCustom(adapter); 8188 } 8189 break; 8190 case RESUME_WEBCORE_PRIORITY: 8191 WebViewCore.resumePriority(); 8192 WebViewCore.resumeUpdatePicture(mWebViewCore); 8193 break; 8194 8195 case LONG_PRESS_CENTER: 8196 // as this is shared by keydown and trackballdown, reset all 8197 // the states 8198 mGotCenterDown = false; 8199 mTrackballDown = false; 8200 performLongClick(); 8201 break; 8202 8203 case WEBCORE_NEED_TOUCH_EVENTS: 8204 mForwardTouchEvents = (msg.arg1 != 0); 8205 break; 8206 8207 case PREVENT_TOUCH_ID: 8208 if (inFullScreenMode()) { 8209 break; 8210 } 8211 TouchEventData ted = (TouchEventData) msg.obj; 8212 8213 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8214 // WebCore is responding to us; remove pending timeout. 8215 // It will be re-posted when needed. 8216 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8217 } 8218 break; 8219 8220 case REQUEST_KEYBOARD: 8221 if (msg.arg1 == 0) { 8222 hideSoftKeyboard(); 8223 } else { 8224 displaySoftKeyboard(false); 8225 } 8226 break; 8227 8228 case FIND_AGAIN: 8229 // Ignore if find has been dismissed. 8230 if (mFindIsUp && mFindCallback != null) { 8231 mFindCallback.findAll(); 8232 } 8233 break; 8234 8235 case DRAG_HELD_MOTIONLESS: 8236 mHeldMotionless = MOTIONLESS_TRUE; 8237 invalidate(); 8238 // fall through to keep scrollbars awake 8239 8240 case AWAKEN_SCROLL_BARS: 8241 if (mTouchMode == TOUCH_DRAG_MODE 8242 && mHeldMotionless == MOTIONLESS_TRUE) { 8243 awakenScrollBars(ViewConfiguration 8244 .getScrollDefaultDelay(), false); 8245 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8246 .obtainMessage(AWAKEN_SCROLL_BARS), 8247 ViewConfiguration.getScrollDefaultDelay()); 8248 } 8249 break; 8250 8251 case DO_MOTION_UP: 8252 doMotionUp(msg.arg1, msg.arg2); 8253 break; 8254 8255 case SCREEN_ON: 8256 setKeepScreenOn(msg.arg1 == 1); 8257 break; 8258 8259 case ENTER_FULLSCREEN_VIDEO: 8260 int layerId = msg.arg1; 8261 8262 String url = (String) msg.obj; 8263 if (mHTML5VideoViewProxy != null) { 8264 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8265 } 8266 break; 8267 8268 case SHOW_FULLSCREEN: { 8269 View view = (View) msg.obj; 8270 int orientation = msg.arg1; 8271 int npp = msg.arg2; 8272 8273 if (inFullScreenMode()) { 8274 Log.w(LOGTAG, "Should not have another full screen."); 8275 dismissFullScreenMode(); 8276 } 8277 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8278 mFullScreenHolder.setContentView(view); 8279 mFullScreenHolder.show(); 8280 8281 break; 8282 } 8283 case HIDE_FULLSCREEN: 8284 dismissFullScreenMode(); 8285 break; 8286 8287 case DOM_FOCUS_CHANGED: 8288 if (inEditingMode()) { 8289 nativeClearCursor(); 8290 rebuildWebTextView(); 8291 } 8292 break; 8293 8294 case SHOW_RECT_MSG_ID: { 8295 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8296 int x = mScrollX; 8297 int left = contentToViewX(data.mLeft); 8298 int width = contentToViewDimension(data.mWidth); 8299 int maxWidth = contentToViewDimension(data.mContentWidth); 8300 int viewWidth = getViewWidth(); 8301 if (width < viewWidth) { 8302 // center align 8303 x += left + width / 2 - mScrollX - viewWidth / 2; 8304 } else { 8305 x += (int) (left + data.mXPercentInDoc * width 8306 - mScrollX - data.mXPercentInView * viewWidth); 8307 } 8308 if (DebugFlags.WEB_VIEW) { 8309 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8310 width + ",maxWidth=" + maxWidth + 8311 ",viewWidth=" + viewWidth + ",x=" 8312 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8313 ",xPercentInView=" + data.mXPercentInView+ ")"); 8314 } 8315 // use the passing content width to cap x as the current 8316 // mContentWidth may not be updated yet 8317 x = Math.max(0, 8318 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8319 int top = contentToViewY(data.mTop); 8320 int height = contentToViewDimension(data.mHeight); 8321 int maxHeight = contentToViewDimension(data.mContentHeight); 8322 int viewHeight = getViewHeight(); 8323 int y = (int) (top + data.mYPercentInDoc * height - 8324 data.mYPercentInView * viewHeight); 8325 if (DebugFlags.WEB_VIEW) { 8326 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8327 height + ",maxHeight=" + maxHeight + 8328 ",viewHeight=" + viewHeight + ",y=" 8329 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8330 ",yPercentInView=" + data.mYPercentInView+ ")"); 8331 } 8332 // use the passing content height to cap y as the current 8333 // mContentHeight may not be updated yet 8334 y = Math.max(0, 8335 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8336 // We need to take into account the visible title height 8337 // when scrolling since y is an absolute view position. 8338 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8339 scrollTo(x, y); 8340 } 8341 break; 8342 8343 case CENTER_FIT_RECT: 8344 centerFitRect((Rect)msg.obj); 8345 break; 8346 8347 case SET_SCROLLBAR_MODES: 8348 mHorizontalScrollBarMode = msg.arg1; 8349 mVerticalScrollBarMode = msg.arg2; 8350 break; 8351 8352 case SELECTION_STRING_CHANGED: 8353 if (mAccessibilityInjector != null) { 8354 String selectionString = (String) msg.obj; 8355 mAccessibilityInjector.onSelectionStringChange(selectionString); 8356 } 8357 break; 8358 8359 case SET_TOUCH_HIGHLIGHT_RECTS: 8360 invalidate(mTouchHighlightRegion.getBounds()); 8361 mTouchHighlightRegion.setEmpty(); 8362 if (msg.obj != null) { 8363 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8364 for (Rect rect : rects) { 8365 Rect viewRect = contentToViewRect(rect); 8366 // some sites, like stories in nytimes.com, set 8367 // mouse event handler in the top div. It is not 8368 // user friendly to highlight the div if it covers 8369 // more than half of the screen. 8370 if (viewRect.width() < getWidth() >> 1 8371 || viewRect.height() < getHeight() >> 1) { 8372 mTouchHighlightRegion.union(viewRect); 8373 invalidate(viewRect); 8374 } else { 8375 Log.w(LOGTAG, "Skip the huge selection rect:" 8376 + viewRect); 8377 } 8378 } 8379 } 8380 break; 8381 8382 case SAVE_WEBARCHIVE_FINISHED: 8383 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8384 if (saveMessage.mCallback != null) { 8385 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8386 } 8387 break; 8388 8389 case SET_AUTOFILLABLE: 8390 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8391 if (mWebTextView != null) { 8392 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8393 rebuildWebTextView(); 8394 } 8395 break; 8396 8397 case AUTOFILL_COMPLETE: 8398 if (mWebTextView != null) { 8399 // Clear the WebTextView adapter when AutoFill finishes 8400 // so that the drop down gets cleared. 8401 mWebTextView.setAdapterCustom(null); 8402 } 8403 break; 8404 8405 case SELECT_AT: 8406 nativeSelectAt(msg.arg1, msg.arg2); 8407 break; 8408 8409 default: 8410 super.handleMessage(msg); 8411 break; 8412 } 8413 } 8414 } 8415 8416 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8417 if (mNativeClass == 0) { 8418 if (mDelaySetPicture != null) { 8419 throw new IllegalStateException("Tried to setNewPicture with" 8420 + " a delay picture already set! (memory leak)"); 8421 } 8422 // Not initialized yet, delay set 8423 mDelaySetPicture = draw; 8424 return; 8425 } 8426 WebViewCore.ViewState viewState = draw.mViewState; 8427 boolean isPictureAfterFirstLayout = viewState != null; 8428 if (updateBaseLayer) { 8429 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8430 getSettings().getShowVisualIndicator(), 8431 isPictureAfterFirstLayout); 8432 } 8433 final Point viewSize = draw.mViewSize; 8434 if (isPictureAfterFirstLayout) { 8435 // Reset the last sent data here since dealing with new page. 8436 mLastWidthSent = 0; 8437 mZoomManager.onFirstLayout(draw); 8438 if (!mDrawHistory) { 8439 // Do not send the scroll event for this particular 8440 // scroll message. Note that a scroll event may 8441 // still be fired if the user scrolls before the 8442 // message can be handled. 8443 mSendScrollEvent = false; 8444 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 8445 mSendScrollEvent = true; 8446 8447 // As we are on a new page, remove the WebTextView. This 8448 // is necessary for page loads driven by webkit, and in 8449 // particular when the user was on a password field, so 8450 // the WebTextView was visible. 8451 clearTextEntry(); 8452 } 8453 } 8454 8455 // We update the layout (i.e. request a layout from the 8456 // view system) if the last view size that we sent to 8457 // WebCore matches the view size of the picture we just 8458 // received in the fixed dimension. 8459 final boolean updateLayout = viewSize.x == mLastWidthSent 8460 && viewSize.y == mLastHeightSent; 8461 // Don't send scroll event for picture coming from webkit, 8462 // since the new picture may cause a scroll event to override 8463 // the saved history scroll position. 8464 mSendScrollEvent = false; 8465 recordNewContentSize(draw.mContentSize.x, 8466 draw.mContentSize.y, updateLayout); 8467 mSendScrollEvent = true; 8468 if (DebugFlags.WEB_VIEW) { 8469 Rect b = draw.mInvalRegion.getBounds(); 8470 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8471 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8472 } 8473 invalidateContentRect(draw.mInvalRegion.getBounds()); 8474 8475 if (mPictureListener != null) { 8476 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8477 } 8478 8479 // update the zoom information based on the new picture 8480 mZoomManager.onNewPicture(draw); 8481 8482 if (draw.mFocusSizeChanged && inEditingMode()) { 8483 mFocusSizeChanged = true; 8484 } 8485 if (isPictureAfterFirstLayout) { 8486 mViewManager.postReadyToDrawAll(); 8487 } 8488 } 8489 8490 /** 8491 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8492 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8493 */ 8494 private void updateTextSelectionFromMessage(int nodePointer, 8495 int textGeneration, WebViewCore.TextSelectionData data) { 8496 if (inEditingMode() 8497 && mWebTextView.isSameTextField(nodePointer) 8498 && textGeneration == mTextGeneration) { 8499 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8500 } 8501 } 8502 8503 // Class used to use a dropdown for a <select> element 8504 private class InvokeListBox implements Runnable { 8505 // Whether the listbox allows multiple selection. 8506 private boolean mMultiple; 8507 // Passed in to a list with multiple selection to tell 8508 // which items are selected. 8509 private int[] mSelectedArray; 8510 // Passed in to a list with single selection to tell 8511 // where the initial selection is. 8512 private int mSelection; 8513 8514 private Container[] mContainers; 8515 8516 // Need these to provide stable ids to my ArrayAdapter, 8517 // which normally does not have stable ids. (Bug 1250098) 8518 private class Container extends Object { 8519 /** 8520 * Possible values for mEnabled. Keep in sync with OptionStatus in 8521 * WebViewCore.cpp 8522 */ 8523 final static int OPTGROUP = -1; 8524 final static int OPTION_DISABLED = 0; 8525 final static int OPTION_ENABLED = 1; 8526 8527 String mString; 8528 int mEnabled; 8529 int mId; 8530 8531 @Override 8532 public String toString() { 8533 return mString; 8534 } 8535 } 8536 8537 /** 8538 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8539 * and allow filtering. 8540 */ 8541 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8542 public MyArrayListAdapter() { 8543 super(mContext, 8544 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8545 com.android.internal.R.layout.webview_select_singlechoice, 8546 mContainers); 8547 } 8548 8549 @Override 8550 public View getView(int position, View convertView, 8551 ViewGroup parent) { 8552 // Always pass in null so that we will get a new CheckedTextView 8553 // Otherwise, an item which was previously used as an <optgroup> 8554 // element (i.e. has no check), could get used as an <option> 8555 // element, which needs a checkbox/radio, but it would not have 8556 // one. 8557 convertView = super.getView(position, null, parent); 8558 Container c = item(position); 8559 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8560 // ListView does not draw dividers between disabled and 8561 // enabled elements. Use a LinearLayout to provide dividers 8562 LinearLayout layout = new LinearLayout(mContext); 8563 layout.setOrientation(LinearLayout.VERTICAL); 8564 if (position > 0) { 8565 View dividerTop = new View(mContext); 8566 dividerTop.setBackgroundResource( 8567 android.R.drawable.divider_horizontal_bright); 8568 layout.addView(dividerTop); 8569 } 8570 8571 if (Container.OPTGROUP == c.mEnabled) { 8572 // Currently select_dialog_multichoice uses CheckedTextViews. 8573 // If that changes, the class cast will no longer be valid. 8574 if (mMultiple) { 8575 Assert.assertTrue(convertView instanceof CheckedTextView); 8576 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8577 } 8578 } else { 8579 // c.mEnabled == Container.OPTION_DISABLED 8580 // Draw the disabled element in a disabled state. 8581 convertView.setEnabled(false); 8582 } 8583 8584 layout.addView(convertView); 8585 if (position < getCount() - 1) { 8586 View dividerBottom = new View(mContext); 8587 dividerBottom.setBackgroundResource( 8588 android.R.drawable.divider_horizontal_bright); 8589 layout.addView(dividerBottom); 8590 } 8591 return layout; 8592 } 8593 return convertView; 8594 } 8595 8596 @Override 8597 public boolean hasStableIds() { 8598 // AdapterView's onChanged method uses this to determine whether 8599 // to restore the old state. Return false so that the old (out 8600 // of date) state does not replace the new, valid state. 8601 return false; 8602 } 8603 8604 private Container item(int position) { 8605 if (position < 0 || position >= getCount()) { 8606 return null; 8607 } 8608 return (Container) getItem(position); 8609 } 8610 8611 @Override 8612 public long getItemId(int position) { 8613 Container item = item(position); 8614 if (item == null) { 8615 return -1; 8616 } 8617 return item.mId; 8618 } 8619 8620 @Override 8621 public boolean areAllItemsEnabled() { 8622 return false; 8623 } 8624 8625 @Override 8626 public boolean isEnabled(int position) { 8627 Container item = item(position); 8628 if (item == null) { 8629 return false; 8630 } 8631 return Container.OPTION_ENABLED == item.mEnabled; 8632 } 8633 } 8634 8635 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8636 mMultiple = true; 8637 mSelectedArray = selected; 8638 8639 int length = array.length; 8640 mContainers = new Container[length]; 8641 for (int i = 0; i < length; i++) { 8642 mContainers[i] = new Container(); 8643 mContainers[i].mString = array[i]; 8644 mContainers[i].mEnabled = enabled[i]; 8645 mContainers[i].mId = i; 8646 } 8647 } 8648 8649 private InvokeListBox(String[] array, int[] enabled, int selection) { 8650 mSelection = selection; 8651 mMultiple = false; 8652 8653 int length = array.length; 8654 mContainers = new Container[length]; 8655 for (int i = 0; i < length; i++) { 8656 mContainers[i] = new Container(); 8657 mContainers[i].mString = array[i]; 8658 mContainers[i].mEnabled = enabled[i]; 8659 mContainers[i].mId = i; 8660 } 8661 } 8662 8663 /* 8664 * Whenever the data set changes due to filtering, this class ensures 8665 * that the checked item remains checked. 8666 */ 8667 private class SingleDataSetObserver extends DataSetObserver { 8668 private long mCheckedId; 8669 private ListView mListView; 8670 private Adapter mAdapter; 8671 8672 /* 8673 * Create a new observer. 8674 * @param id The ID of the item to keep checked. 8675 * @param l ListView for getting and clearing the checked states 8676 * @param a Adapter for getting the IDs 8677 */ 8678 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8679 mCheckedId = id; 8680 mListView = l; 8681 mAdapter = a; 8682 } 8683 8684 @Override 8685 public void onChanged() { 8686 // The filter may have changed which item is checked. Find the 8687 // item that the ListView thinks is checked. 8688 int position = mListView.getCheckedItemPosition(); 8689 long id = mAdapter.getItemId(position); 8690 if (mCheckedId != id) { 8691 // Clear the ListView's idea of the checked item, since 8692 // it is incorrect 8693 mListView.clearChoices(); 8694 // Search for mCheckedId. If it is in the filtered list, 8695 // mark it as checked 8696 int count = mAdapter.getCount(); 8697 for (int i = 0; i < count; i++) { 8698 if (mAdapter.getItemId(i) == mCheckedId) { 8699 mListView.setItemChecked(i, true); 8700 break; 8701 } 8702 } 8703 } 8704 } 8705 } 8706 8707 public void run() { 8708 final ListView listView = (ListView) LayoutInflater.from(mContext) 8709 .inflate(com.android.internal.R.layout.select_dialog, null); 8710 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8711 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8712 .setView(listView).setCancelable(true) 8713 .setInverseBackgroundForced(true); 8714 8715 if (mMultiple) { 8716 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8717 public void onClick(DialogInterface dialog, int which) { 8718 mWebViewCore.sendMessage( 8719 EventHub.LISTBOX_CHOICES, 8720 adapter.getCount(), 0, 8721 listView.getCheckedItemPositions()); 8722 }}); 8723 b.setNegativeButton(android.R.string.cancel, 8724 new DialogInterface.OnClickListener() { 8725 public void onClick(DialogInterface dialog, int which) { 8726 mWebViewCore.sendMessage( 8727 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8728 }}); 8729 } 8730 mListBoxDialog = b.create(); 8731 listView.setAdapter(adapter); 8732 listView.setFocusableInTouchMode(true); 8733 // There is a bug (1250103) where the checks in a ListView with 8734 // multiple items selected are associated with the positions, not 8735 // the ids, so the items do not properly retain their checks when 8736 // filtered. Do not allow filtering on multiple lists until 8737 // that bug is fixed. 8738 8739 listView.setTextFilterEnabled(!mMultiple); 8740 if (mMultiple) { 8741 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8742 int length = mSelectedArray.length; 8743 for (int i = 0; i < length; i++) { 8744 listView.setItemChecked(mSelectedArray[i], true); 8745 } 8746 } else { 8747 listView.setOnItemClickListener(new OnItemClickListener() { 8748 public void onItemClick(AdapterView<?> parent, View v, 8749 int position, long id) { 8750 // Rather than sending the message right away, send it 8751 // after the page regains focus. 8752 mListBoxMessage = Message.obtain(null, 8753 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8754 mListBoxDialog.dismiss(); 8755 mListBoxDialog = null; 8756 } 8757 }); 8758 if (mSelection != -1) { 8759 listView.setSelection(mSelection); 8760 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8761 listView.setItemChecked(mSelection, true); 8762 DataSetObserver observer = new SingleDataSetObserver( 8763 adapter.getItemId(mSelection), listView, adapter); 8764 adapter.registerDataSetObserver(observer); 8765 } 8766 } 8767 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8768 public void onCancel(DialogInterface dialog) { 8769 mWebViewCore.sendMessage( 8770 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8771 mListBoxDialog = null; 8772 } 8773 }); 8774 mListBoxDialog.show(); 8775 } 8776 } 8777 8778 private Message mListBoxMessage; 8779 8780 /* 8781 * Request a dropdown menu for a listbox with multiple selection. 8782 * 8783 * @param array Labels for the listbox. 8784 * @param enabledArray State for each element in the list. See static 8785 * integers in Container class. 8786 * @param selectedArray Which positions are initally selected. 8787 */ 8788 void requestListBox(String[] array, int[] enabledArray, int[] 8789 selectedArray) { 8790 mPrivateHandler.post( 8791 new InvokeListBox(array, enabledArray, selectedArray)); 8792 } 8793 8794 /* 8795 * Request a dropdown menu for a listbox with single selection or a single 8796 * <select> element. 8797 * 8798 * @param array Labels for the listbox. 8799 * @param enabledArray State for each element in the list. See static 8800 * integers in Container class. 8801 * @param selection Which position is initally selected. 8802 */ 8803 void requestListBox(String[] array, int[] enabledArray, int selection) { 8804 mPrivateHandler.post( 8805 new InvokeListBox(array, enabledArray, selection)); 8806 } 8807 8808 // called by JNI 8809 private void sendMoveFocus(int frame, int node) { 8810 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8811 new WebViewCore.CursorData(frame, node, 0, 0)); 8812 } 8813 8814 // called by JNI 8815 private void sendMoveMouse(int frame, int node, int x, int y) { 8816 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8817 new WebViewCore.CursorData(frame, node, x, y)); 8818 } 8819 8820 /* 8821 * Send a mouse move event to the webcore thread. 8822 * 8823 * @param removeFocus Pass true to remove the WebTextView, if present. 8824 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8825 * called by JNI 8826 */ 8827 @SuppressWarnings("unused") 8828 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8829 if (removeFocus) { 8830 clearTextEntry(); 8831 } 8832 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8833 stopPaintingCaret ? 1 : 0, 0, 8834 cursorData()); 8835 } 8836 8837 /** 8838 * Called by JNI to send a message to the webcore thread that the user 8839 * touched the webpage. 8840 * @param touchGeneration Generation number of the touch, to ignore touches 8841 * after a new one has been generated. 8842 * @param frame Pointer to the frame holding the node that was touched. 8843 * @param node Pointer to the node touched. 8844 * @param x x-position of the touch. 8845 * @param y y-position of the touch. 8846 */ 8847 private void sendMotionUp(int touchGeneration, 8848 int frame, int node, int x, int y) { 8849 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8850 touchUpData.mMoveGeneration = touchGeneration; 8851 touchUpData.mFrame = frame; 8852 touchUpData.mNode = node; 8853 touchUpData.mX = x; 8854 touchUpData.mY = y; 8855 touchUpData.mNativeLayer = nativeScrollableLayer( 8856 x, y, touchUpData.mNativeLayerRect, null); 8857 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8858 } 8859 8860 8861 private int getScaledMaxXScroll() { 8862 int width; 8863 if (mHeightCanMeasure == false) { 8864 width = getViewWidth() / 4; 8865 } else { 8866 Rect visRect = new Rect(); 8867 calcOurVisibleRect(visRect); 8868 width = visRect.width() / 2; 8869 } 8870 // FIXME the divisor should be retrieved from somewhere 8871 return viewToContentX(width); 8872 } 8873 8874 private int getScaledMaxYScroll() { 8875 int height; 8876 if (mHeightCanMeasure == false) { 8877 height = getViewHeight() / 4; 8878 } else { 8879 Rect visRect = new Rect(); 8880 calcOurVisibleRect(visRect); 8881 height = visRect.height() / 2; 8882 } 8883 // FIXME the divisor should be retrieved from somewhere 8884 // the closest thing today is hard-coded into ScrollView.java 8885 // (from ScrollView.java, line 363) int maxJump = height/2; 8886 return Math.round(height * mZoomManager.getInvScale()); 8887 } 8888 8889 /** 8890 * Called by JNI to invalidate view 8891 */ 8892 private void viewInvalidate() { 8893 invalidate(); 8894 } 8895 8896 /** 8897 * Pass the key directly to the page. This assumes that 8898 * nativePageShouldHandleShiftAndArrows() returned true. 8899 */ 8900 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8901 int keyEventAction; 8902 int eventHubAction; 8903 if (down) { 8904 keyEventAction = KeyEvent.ACTION_DOWN; 8905 eventHubAction = EventHub.KEY_DOWN; 8906 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8907 } else { 8908 keyEventAction = KeyEvent.ACTION_UP; 8909 eventHubAction = EventHub.KEY_UP; 8910 } 8911 8912 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8913 1, (metaState & KeyEvent.META_SHIFT_ON) 8914 | (metaState & KeyEvent.META_ALT_ON) 8915 | (metaState & KeyEvent.META_SYM_ON) 8916 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8917 mWebViewCore.sendMessage(eventHubAction, event); 8918 } 8919 8920 // return true if the key was handled 8921 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8922 long time) { 8923 if (mNativeClass == 0) { 8924 return false; 8925 } 8926 mInitialHitTestResult = null; 8927 mLastCursorTime = time; 8928 mLastCursorBounds = nativeGetCursorRingBounds(); 8929 boolean keyHandled 8930 = nativeMoveCursor(keyCode, count, noScroll) == false; 8931 if (DebugFlags.WEB_VIEW) { 8932 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8933 + " mLastCursorTime=" + mLastCursorTime 8934 + " handled=" + keyHandled); 8935 } 8936 if (keyHandled == false) { 8937 return keyHandled; 8938 } 8939 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8940 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8941 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8942 // set last touch so that context menu related functions will work 8943 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8944 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8945 if (mHeightCanMeasure == false) { 8946 return keyHandled; 8947 } 8948 Rect visRect = new Rect(); 8949 calcOurVisibleRect(visRect); 8950 Rect outset = new Rect(visRect); 8951 int maxXScroll = visRect.width() / 2; 8952 int maxYScroll = visRect.height() / 2; 8953 outset.inset(-maxXScroll, -maxYScroll); 8954 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8955 return keyHandled; 8956 } 8957 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8958 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8959 maxXScroll); 8960 if (maxH > 0) { 8961 pinScrollBy(maxH, 0, true, 0); 8962 } else { 8963 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8964 -maxXScroll); 8965 if (maxH < 0) { 8966 pinScrollBy(maxH, 0, true, 0); 8967 } 8968 } 8969 if (mLastCursorBounds.isEmpty()) return keyHandled; 8970 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8971 return keyHandled; 8972 } 8973 if (DebugFlags.WEB_VIEW) { 8974 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8975 + contentCursorRingBounds); 8976 } 8977 requestRectangleOnScreen(viewCursorRingBounds); 8978 return keyHandled; 8979 } 8980 8981 /** 8982 * @return Whether accessibility script has been injected. 8983 */ 8984 private boolean accessibilityScriptInjected() { 8985 // TODO: Maybe the injected script should announce its presence in 8986 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8987 // will check that as one of the conditions it looks for 8988 return mAccessibilityScriptInjected; 8989 } 8990 8991 /** 8992 * Set the background color. It's white by default. Pass 8993 * zero to make the view transparent. 8994 * @param color the ARGB color described by Color.java 8995 */ 8996 @Override 8997 public void setBackgroundColor(int color) { 8998 mBackgroundColor = color; 8999 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9000 } 9001 9002 /** 9003 * @deprecated This method is now obsolete. 9004 */ 9005 @Deprecated 9006 public void debugDump() { 9007 checkThread(); 9008 nativeDebugDump(); 9009 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9010 } 9011 9012 /** 9013 * Draw the HTML page into the specified canvas. This call ignores any 9014 * view-specific zoom, scroll offset, or other changes. It does not draw 9015 * any view-specific chrome, such as progress or URL bars. 9016 * 9017 * @hide only needs to be accessible to Browser and testing 9018 */ 9019 public void drawPage(Canvas canvas) { 9020 nativeDraw(canvas, 0, 0, false); 9021 } 9022 9023 /** 9024 * Enable the communication b/t the webView and VideoViewProxy 9025 * 9026 * @hide only used by the Browser 9027 */ 9028 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9029 mHTML5VideoViewProxy = proxy; 9030 } 9031 9032 /** 9033 * Enable expanded tiles bound for smoother scrolling. 9034 * 9035 * @hide only used by the Browser 9036 */ 9037 public void setExpandedTileBounds(boolean enabled) { 9038 nativeSetExpandedTileBounds(enabled); 9039 } 9040 9041 /** 9042 * Set the time to wait between passing touches to WebCore. See also the 9043 * TOUCH_SENT_INTERVAL member for further discussion. 9044 * 9045 * @hide This is only used by the DRT test application. 9046 */ 9047 public void setTouchInterval(int interval) { 9048 mCurrentTouchInterval = interval; 9049 } 9050 9051 /** 9052 * Update our cache with updatedText. 9053 * @param updatedText The new text to put in our cache. 9054 * @hide 9055 */ 9056 protected void updateCachedTextfield(String updatedText) { 9057 // Also place our generation number so that when we look at the cache 9058 // we recognize that it is up to date. 9059 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9060 } 9061 9062 /*package*/ void autoFillForm(int autoFillQueryId) { 9063 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9064 } 9065 9066 /* package */ ViewManager getViewManager() { 9067 return mViewManager; 9068 } 9069 9070 private static void checkThread() { 9071 if (Looper.myLooper() != Looper.getMainLooper()) { 9072 RuntimeException exception = new RuntimeException( 9073 "A WebView method was called on thread '" + 9074 Thread.currentThread().getName() + "'. " + 9075 "All WebView methods must be called on the UI thread. " + 9076 "Future versions of WebView may not support use on other threads."); 9077 Log.e(LOGTAG, Log.getStackTraceString(exception)); 9078 StrictMode.onWebViewMethodCalledOnWrongThread(exception); 9079 } 9080 } 9081 9082 private native int nativeCacheHitFramePointer(); 9083 private native boolean nativeCacheHitIsPlugin(); 9084 private native Rect nativeCacheHitNodeBounds(); 9085 private native int nativeCacheHitNodePointer(); 9086 /* package */ native void nativeClearCursor(); 9087 private native void nativeCreate(int ptr, String drawableDir, AssetManager am); 9088 private native int nativeCursorFramePointer(); 9089 private native Rect nativeCursorNodeBounds(); 9090 private native int nativeCursorNodePointer(); 9091 private native boolean nativeCursorIntersects(Rect visibleRect); 9092 private native boolean nativeCursorIsAnchor(); 9093 private native boolean nativeCursorIsTextInput(); 9094 private native Point nativeCursorPosition(); 9095 private native String nativeCursorText(); 9096 /** 9097 * Returns true if the native cursor node says it wants to handle key events 9098 * (ala plugins). This can only be called if mNativeClass is non-zero! 9099 */ 9100 private native boolean nativeCursorWantsKeyEvents(); 9101 private native void nativeDebugDump(); 9102 private native void nativeDestroy(); 9103 9104 /** 9105 * Draw the picture set with a background color and extra. If 9106 * "splitIfNeeded" is true and the return value is not 0, the return value 9107 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9108 * native allocation can be freed. 9109 */ 9110 private native int nativeDraw(Canvas canvas, int color, int extra, 9111 boolean splitIfNeeded); 9112 private native void nativeDumpDisplayTree(String urlOrNull); 9113 private native boolean nativeEvaluateLayersAnimations(); 9114 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 9115 float scale, int extras); 9116 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 9117 private native void nativeExtendSelection(int x, int y); 9118 private native int nativeFindAll(String findLower, String findUpper, 9119 boolean sameAsLastSearch); 9120 private native void nativeFindNext(boolean forward); 9121 /* package */ native int nativeFocusCandidateFramePointer(); 9122 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9123 /* package */ native boolean nativeFocusCandidateIsPassword(); 9124 private native boolean nativeFocusCandidateIsRtlText(); 9125 private native boolean nativeFocusCandidateIsTextInput(); 9126 /* package */ native int nativeFocusCandidateMaxLength(); 9127 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9128 /* package */ native String nativeFocusCandidateName(); 9129 private native Rect nativeFocusCandidateNodeBounds(); 9130 /** 9131 * @return A Rect with left, top, right, bottom set to the corresponding 9132 * padding values in the focus candidate, if it is a textfield/textarea with 9133 * a style. Otherwise return null. This is not actually a rectangle; Rect 9134 * is being used to pass four integers. 9135 */ 9136 private native Rect nativeFocusCandidatePaddingRect(); 9137 /* package */ native int nativeFocusCandidatePointer(); 9138 private native String nativeFocusCandidateText(); 9139 /* package */ native float nativeFocusCandidateTextSize(); 9140 /* package */ native int nativeFocusCandidateLineHeight(); 9141 /** 9142 * Returns an integer corresponding to WebView.cpp::type. 9143 * See WebTextView.setType() 9144 */ 9145 private native int nativeFocusCandidateType(); 9146 private native boolean nativeFocusIsPlugin(); 9147 private native Rect nativeFocusNodeBounds(); 9148 /* package */ native int nativeFocusNodePointer(); 9149 private native Rect nativeGetCursorRingBounds(); 9150 private native String nativeGetSelection(); 9151 private native boolean nativeHasCursorNode(); 9152 private native boolean nativeHasFocusNode(); 9153 private native void nativeHideCursor(); 9154 private native boolean nativeHitSelection(int x, int y); 9155 private native String nativeImageURI(int x, int y); 9156 private native void nativeInstrumentReport(); 9157 private native Rect nativeLayerBounds(int layer); 9158 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9159 // return true if the page has been scrolled 9160 private native boolean nativeMotionUp(int x, int y, int slop); 9161 // returns false if it handled the key 9162 private native boolean nativeMoveCursor(int keyCode, int count, 9163 boolean noScroll); 9164 private native int nativeMoveGeneration(); 9165 private native void nativeMoveSelection(int x, int y); 9166 /** 9167 * @return true if the page should get the shift and arrow keys, rather 9168 * than select text/navigation. 9169 * 9170 * If the focus is a plugin, or if the focus and cursor match and are 9171 * a contentEditable element, then the page should handle these keys. 9172 */ 9173 private native boolean nativePageShouldHandleShiftAndArrows(); 9174 private native boolean nativePointInNavCache(int x, int y, int slop); 9175 // Like many other of our native methods, you must make sure that 9176 // mNativeClass is not null before calling this method. 9177 private native void nativeRecordButtons(boolean focused, 9178 boolean pressed, boolean invalidate); 9179 private native void nativeResetSelection(); 9180 private native Point nativeSelectableText(); 9181 private native void nativeSelectAll(); 9182 private native void nativeSelectBestAt(Rect rect); 9183 private native void nativeSelectAt(int x, int y); 9184 private native int nativeSelectionX(); 9185 private native int nativeSelectionY(); 9186 private native int nativeFindIndex(); 9187 private native void nativeSetExtendSelection(); 9188 private native void nativeSetFindIsEmpty(); 9189 private native void nativeSetFindIsUp(boolean isUp); 9190 private native void nativeSetHeightCanMeasure(boolean measure); 9191 private native void nativeSetBaseLayer(int layer, Region invalRegion, 9192 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 9193 private native int nativeGetBaseLayer(); 9194 private native void nativeShowCursorTimed(); 9195 private native void nativeReplaceBaseContent(int content); 9196 private native void nativeCopyBaseContentToPicture(Picture pict); 9197 private native boolean nativeHasContent(); 9198 private native void nativeSetSelectionPointer(boolean set, 9199 float scale, int x, int y); 9200 private native boolean nativeStartSelection(int x, int y); 9201 private native void nativeStopGL(); 9202 private native Rect nativeSubtractLayers(Rect content); 9203 private native int nativeTextGeneration(); 9204 // Never call this version except by updateCachedTextfield(String) - 9205 // we always want to pass in our generation number. 9206 private native void nativeUpdateCachedTextfield(String updatedText, 9207 int generation); 9208 private native boolean nativeWordSelection(int x, int y); 9209 // return NO_LEFTEDGE means failure. 9210 static final int NO_LEFTEDGE = -1; 9211 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9212 9213 private native void nativeSetExpandedTileBounds(boolean enabled); 9214 9215 // Returns a pointer to the scrollable LayerAndroid at the given point. 9216 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9217 Rect scrollBounds); 9218 /** 9219 * Scroll the specified layer. 9220 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9221 * @param newX Destination x position to which to scroll. 9222 * @param newY Destination y position to which to scroll. 9223 * @return True if the layer is successfully scrolled. 9224 */ 9225 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9226 private native int nativeGetBackgroundColor(); 9227} 9228