WebView.java revision 335f4547530b58d60003b844139ba25de9486124
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.Configuration; 31import android.database.DataSetObserver; 32import android.graphics.Bitmap; 33import android.graphics.BitmapFactory; 34import android.graphics.BitmapShader; 35import android.graphics.Canvas; 36import android.graphics.Color; 37import android.graphics.CornerPathEffect; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.RegionIterator; 47import android.graphics.Shader; 48import android.graphics.drawable.Drawable; 49import android.net.Proxy; 50import android.net.ProxyProperties; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Looper; 57import android.os.Message; 58import android.os.StrictMode; 59import android.provider.Settings; 60import android.speech.tts.TextToSpeech; 61import android.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 // In addition, a double tap on a trackpad will always have a duration of 541 // 300ms, so this value must be at least that (otherwise we will timeout the 542 // first tap and convert it to a long press). 543 private static final int TAP_TIMEOUT = 300; 544 // This should be ViewConfiguration.getLongPressTimeout() 545 // But system time out is 500ms, which is too short for the browser. 546 // With a short timeout, it's difficult to treat trigger a short press. 547 private static final int LONG_PRESS_TIMEOUT = 1000; 548 // needed to avoid flinging after a pause of no movement 549 private static final int MIN_FLING_TIME = 250; 550 // draw unfiltered after drag is held without movement 551 private static final int MOTIONLESS_TIME = 100; 552 // The amount of content to overlap between two screens when going through 553 // pages with the space bar, in pixels. 554 private static final int PAGE_SCROLL_OVERLAP = 24; 555 556 /** 557 * These prevent calling requestLayout if either dimension is fixed. This 558 * depends on the layout parameters and the measure specs. 559 */ 560 boolean mWidthCanMeasure; 561 boolean mHeightCanMeasure; 562 563 // Remember the last dimensions we sent to the native side so we can avoid 564 // sending the same dimensions more than once. 565 int mLastWidthSent; 566 int mLastHeightSent; 567 // Since view height sent to webkit could be fixed to avoid relayout, this 568 // value records the last sent actual view height. 569 int mLastActualHeightSent; 570 571 private int mContentWidth; // cache of value from WebViewCore 572 private int mContentHeight; // cache of value from WebViewCore 573 574 // Need to have the separate control for horizontal and vertical scrollbar 575 // style than the View's single scrollbar style 576 private boolean mOverlayHorizontalScrollbar = true; 577 private boolean mOverlayVerticalScrollbar = false; 578 579 // our standard speed. this way small distances will be traversed in less 580 // time than large distances, but we cap the duration, so that very large 581 // distances won't take too long to get there. 582 private static final int STD_SPEED = 480; // pixels per second 583 // time for the longest scroll animation 584 private static final int MAX_DURATION = 750; // milliseconds 585 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 586 587 // Used by OverScrollGlow 588 OverScroller mScroller; 589 590 private boolean mInOverScrollMode = false; 591 private static Paint mOverScrollBackground; 592 private static Paint mOverScrollBorder; 593 594 private boolean mWrapContent; 595 private static final int MOTIONLESS_FALSE = 0; 596 private static final int MOTIONLESS_PENDING = 1; 597 private static final int MOTIONLESS_TRUE = 2; 598 private static final int MOTIONLESS_IGNORE = 3; 599 private int mHeldMotionless; 600 601 // An instance for injecting accessibility in WebViews with disabled 602 // JavaScript or ones for which no accessibility script exists 603 private AccessibilityInjector mAccessibilityInjector; 604 605 // flag indicating if accessibility script is injected so we 606 // know to handle Shift and arrows natively first 607 private boolean mAccessibilityScriptInjected; 608 609 static final boolean USE_WEBKIT_RINGS = true; 610 // the color used to highlight the touch rectangles 611 private static final int mHightlightColor = 0x6633b5e5; 612 // the round corner for the highlight path 613 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 614 // the region indicating where the user touched on the screen 615 private Region mTouchHighlightRegion = new Region(); 616 // the paint for the touch highlight 617 private Paint mTouchHightlightPaint; 618 // debug only 619 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 620 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 621 private Paint mTouchCrossHairColor; 622 private int mTouchHighlightX; 623 private int mTouchHighlightY; 624 private long mTouchHighlightRequested; 625 626 // Basically this proxy is used to tell the Video to update layer tree at 627 // SetBaseLayer time and to pause when WebView paused. 628 private HTML5VideoViewProxy mHTML5VideoViewProxy; 629 630 // If we are using a set picture, don't send view updates to webkit 631 private boolean mBlockWebkitViewMessages = false; 632 633 // cached value used to determine if we need to switch drawing models 634 private boolean mHardwareAccelSkia = false; 635 636 /* 637 * Private message ids 638 */ 639 private static final int REMEMBER_PASSWORD = 1; 640 private static final int NEVER_REMEMBER_PASSWORD = 2; 641 private static final int SWITCH_TO_SHORTPRESS = 3; 642 private static final int SWITCH_TO_LONGPRESS = 4; 643 private static final int RELEASE_SINGLE_TAP = 5; 644 private static final int REQUEST_FORM_DATA = 6; 645 private static final int RESUME_WEBCORE_PRIORITY = 7; 646 private static final int DRAG_HELD_MOTIONLESS = 8; 647 private static final int AWAKEN_SCROLL_BARS = 9; 648 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 649 private static final int SCROLL_SELECT_TEXT = 11; 650 651 652 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 653 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 654 655 /* 656 * Package message ids 657 */ 658 static final int SCROLL_TO_MSG_ID = 101; 659 static final int NEW_PICTURE_MSG_ID = 105; 660 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 661 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 662 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 663 static final int UPDATE_ZOOM_RANGE = 109; 664 static final int UNHANDLED_NAV_KEY = 110; 665 static final int CLEAR_TEXT_ENTRY = 111; 666 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 667 static final int SHOW_RECT_MSG_ID = 113; 668 static final int LONG_PRESS_CENTER = 114; 669 static final int PREVENT_TOUCH_ID = 115; 670 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 671 // obj=Rect in doc coordinates 672 static final int INVAL_RECT_MSG_ID = 117; 673 static final int REQUEST_KEYBOARD = 118; 674 static final int DO_MOTION_UP = 119; 675 static final int SHOW_FULLSCREEN = 120; 676 static final int HIDE_FULLSCREEN = 121; 677 static final int DOM_FOCUS_CHANGED = 122; 678 static final int REPLACE_BASE_CONTENT = 123; 679 static final int FORM_DID_BLUR = 124; 680 static final int RETURN_LABEL = 125; 681 static final int FIND_AGAIN = 126; 682 static final int CENTER_FIT_RECT = 127; 683 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 684 static final int SET_SCROLLBAR_MODES = 129; 685 static final int SELECTION_STRING_CHANGED = 130; 686 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 687 static final int SAVE_WEBARCHIVE_FINISHED = 132; 688 689 static final int SET_AUTOFILLABLE = 133; 690 static final int AUTOFILL_COMPLETE = 134; 691 692 static final int SELECT_AT = 135; 693 static final int SCREEN_ON = 136; 694 static final int ENTER_FULLSCREEN_VIDEO = 137; 695 696 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 697 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 698 699 static final String[] HandlerPrivateDebugString = { 700 "REMEMBER_PASSWORD", // = 1; 701 "NEVER_REMEMBER_PASSWORD", // = 2; 702 "SWITCH_TO_SHORTPRESS", // = 3; 703 "SWITCH_TO_LONGPRESS", // = 4; 704 "RELEASE_SINGLE_TAP", // = 5; 705 "REQUEST_FORM_DATA", // = 6; 706 "RESUME_WEBCORE_PRIORITY", // = 7; 707 "DRAG_HELD_MOTIONLESS", // = 8; 708 "AWAKEN_SCROLL_BARS", // = 9; 709 "PREVENT_DEFAULT_TIMEOUT", // = 10; 710 "SCROLL_SELECT_TEXT" // = 11; 711 }; 712 713 static final String[] HandlerPackageDebugString = { 714 "SCROLL_TO_MSG_ID", // = 101; 715 "102", // = 102; 716 "103", // = 103; 717 "104", // = 104; 718 "NEW_PICTURE_MSG_ID", // = 105; 719 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 720 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 721 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 722 "UPDATE_ZOOM_RANGE", // = 109; 723 "UNHANDLED_NAV_KEY", // = 110; 724 "CLEAR_TEXT_ENTRY", // = 111; 725 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 726 "SHOW_RECT_MSG_ID", // = 113; 727 "LONG_PRESS_CENTER", // = 114; 728 "PREVENT_TOUCH_ID", // = 115; 729 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 730 "INVAL_RECT_MSG_ID", // = 117; 731 "REQUEST_KEYBOARD", // = 118; 732 "DO_MOTION_UP", // = 119; 733 "SHOW_FULLSCREEN", // = 120; 734 "HIDE_FULLSCREEN", // = 121; 735 "DOM_FOCUS_CHANGED", // = 122; 736 "REPLACE_BASE_CONTENT", // = 123; 737 "FORM_DID_BLUR", // = 124; 738 "RETURN_LABEL", // = 125; 739 "FIND_AGAIN", // = 126; 740 "CENTER_FIT_RECT", // = 127; 741 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 742 "SET_SCROLLBAR_MODES", // = 129; 743 "SELECTION_STRING_CHANGED", // = 130; 744 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 745 "SAVE_WEBARCHIVE_FINISHED", // = 132; 746 "SET_AUTOFILLABLE", // = 133; 747 "AUTOFILL_COMPLETE", // = 134; 748 "SELECT_AT", // = 135; 749 "SCREEN_ON", // = 136; 750 "ENTER_FULLSCREEN_VIDEO" // = 137; 751 }; 752 753 // If the site doesn't use the viewport meta tag to specify the viewport, 754 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 755 static final int DEFAULT_VIEWPORT_WIDTH = 980; 756 757 // normally we try to fit the content to the minimum preferred width 758 // calculated by the Webkit. To avoid the bad behavior when some site's 759 // minimum preferred width keeps growing when changing the viewport width or 760 // the minimum preferred width is huge, an upper limit is needed. 761 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 762 763 // initial scale in percent. 0 means using default. 764 private int mInitialScaleInPercent = 0; 765 766 // Whether or not a scroll event should be sent to webkit. This is only set 767 // to false when restoring the scroll position. 768 private boolean mSendScrollEvent = true; 769 770 private int mSnapScrollMode = SNAP_NONE; 771 private static final int SNAP_NONE = 0; 772 private static final int SNAP_LOCK = 1; // not a separate state 773 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 774 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 775 private boolean mSnapPositive; 776 777 // keep these in sync with their counterparts in WebView.cpp 778 private static final int DRAW_EXTRAS_NONE = 0; 779 private static final int DRAW_EXTRAS_FIND = 1; 780 private static final int DRAW_EXTRAS_SELECTION = 2; 781 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 782 783 // keep this in sync with WebCore:ScrollbarMode in WebKit 784 private static final int SCROLLBAR_AUTO = 0; 785 private static final int SCROLLBAR_ALWAYSOFF = 1; 786 // as we auto fade scrollbar, this is ignored. 787 private static final int SCROLLBAR_ALWAYSON = 2; 788 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 789 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 790 791 // constants for determining script injection strategy 792 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 793 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 794 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 795 796 // the alias via which accessibility JavaScript interface is exposed 797 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 798 799 // JavaScript to inject the script chooser which will 800 // pick the right script for the current URL 801 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 802 "javascript:(function() {" + 803 " var chooser = document.createElement('script');" + 804 " chooser.type = 'text/javascript';" + 805 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 806 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 807 " })();"; 808 809 // Regular expression that matches the "axs" URL parameter. 810 // The value of 0 means the accessibility script is opted out 811 // The value of 1 means the accessibility script is already injected 812 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 813 814 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 815 private TextToSpeech mTextToSpeech; 816 817 // variable to cache the above pattern in case accessibility is enabled. 818 private Pattern mMatchAxsUrlParameterPattern; 819 820 /** 821 * Max distance to overscroll by in pixels. 822 * This how far content can be pulled beyond its normal bounds by the user. 823 */ 824 private int mOverscrollDistance; 825 826 /** 827 * Max distance to overfling by in pixels. 828 * This is how far flinged content can move beyond the end of its normal bounds. 829 */ 830 private int mOverflingDistance; 831 832 private OverScrollGlow mOverScrollGlow; 833 834 // Used to match key downs and key ups 835 private Vector<Integer> mKeysPressed; 836 837 /* package */ static boolean mLogEvent = true; 838 839 // for event log 840 private long mLastTouchUpTime = 0; 841 842 private WebViewCore.AutoFillData mAutoFillData; 843 844 private static boolean sNotificationsEnabled = true; 845 846 /** 847 * URI scheme for telephone number 848 */ 849 public static final String SCHEME_TEL = "tel:"; 850 /** 851 * URI scheme for email address 852 */ 853 public static final String SCHEME_MAILTO = "mailto:"; 854 /** 855 * URI scheme for map address 856 */ 857 public static final String SCHEME_GEO = "geo:0,0?q="; 858 859 private int mBackgroundColor = Color.WHITE; 860 861 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 862 private int mAutoScrollX = 0; 863 private int mAutoScrollY = 0; 864 private int mMinAutoScrollX = 0; 865 private int mMaxAutoScrollX = 0; 866 private int mMinAutoScrollY = 0; 867 private int mMaxAutoScrollY = 0; 868 private Rect mScrollingLayerBounds = new Rect(); 869 private boolean mSentAutoScrollMessage = false; 870 871 // used for serializing asynchronously handled touch events. 872 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 873 874 // Used to notify listeners of a new picture. 875 private PictureListener mPictureListener; 876 /** 877 * Interface to listen for new pictures as they change. 878 * @deprecated This interface is now obsolete. 879 */ 880 @Deprecated 881 public interface PictureListener { 882 /** 883 * Notify the listener that the picture has changed. 884 * @param view The WebView that owns the picture. 885 * @param picture The new picture. 886 * @deprecated This method is now obsolete. 887 */ 888 @Deprecated 889 public void onNewPicture(WebView view, Picture picture); 890 } 891 892 // FIXME: Want to make this public, but need to change the API file. 893 public /*static*/ class HitTestResult { 894 /** 895 * Default HitTestResult, where the target is unknown 896 */ 897 public static final int UNKNOWN_TYPE = 0; 898 /** 899 * @deprecated This type is no longer used. 900 */ 901 @Deprecated 902 public static final int ANCHOR_TYPE = 1; 903 /** 904 * HitTestResult for hitting a phone number 905 */ 906 public static final int PHONE_TYPE = 2; 907 /** 908 * HitTestResult for hitting a map address 909 */ 910 public static final int GEO_TYPE = 3; 911 /** 912 * HitTestResult for hitting an email address 913 */ 914 public static final int EMAIL_TYPE = 4; 915 /** 916 * HitTestResult for hitting an HTML::img tag 917 */ 918 public static final int IMAGE_TYPE = 5; 919 /** 920 * @deprecated This type is no longer used. 921 */ 922 @Deprecated 923 public static final int IMAGE_ANCHOR_TYPE = 6; 924 /** 925 * HitTestResult for hitting a HTML::a tag with src=http 926 */ 927 public static final int SRC_ANCHOR_TYPE = 7; 928 /** 929 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 930 */ 931 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 932 /** 933 * HitTestResult for hitting an edit text area 934 */ 935 public static final int EDIT_TEXT_TYPE = 9; 936 937 private int mType; 938 private String mExtra; 939 940 HitTestResult() { 941 mType = UNKNOWN_TYPE; 942 } 943 944 private void setType(int type) { 945 mType = type; 946 } 947 948 private void setExtra(String extra) { 949 mExtra = extra; 950 } 951 952 public int getType() { 953 return mType; 954 } 955 956 public String getExtra() { 957 return mExtra; 958 } 959 } 960 961 /** 962 * Construct a new WebView with a Context object. 963 * @param context A Context object used to access application assets. 964 */ 965 public WebView(Context context) { 966 this(context, null); 967 } 968 969 /** 970 * Construct a new WebView with layout parameters. 971 * @param context A Context object used to access application assets. 972 * @param attrs An AttributeSet passed to our parent. 973 */ 974 public WebView(Context context, AttributeSet attrs) { 975 this(context, attrs, com.android.internal.R.attr.webViewStyle); 976 } 977 978 /** 979 * Construct a new WebView with layout parameters and a default style. 980 * @param context A Context object used to access application assets. 981 * @param attrs An AttributeSet passed to our parent. 982 * @param defStyle The default style resource ID. 983 */ 984 public WebView(Context context, AttributeSet attrs, int defStyle) { 985 this(context, attrs, defStyle, false); 986 } 987 988 /** 989 * Construct a new WebView with layout parameters and a default style. 990 * @param context A Context object used to access application assets. 991 * @param attrs An AttributeSet passed to our parent. 992 * @param defStyle The default style resource ID. 993 */ 994 public WebView(Context context, AttributeSet attrs, int defStyle, 995 boolean privateBrowsing) { 996 this(context, attrs, defStyle, null, privateBrowsing); 997 } 998 999 /** 1000 * Construct a new WebView with layout parameters, a default style and a set 1001 * of custom Javscript interfaces to be added to the WebView at initialization 1002 * time. This guarantees that these interfaces will be available when the JS 1003 * context is initialized. 1004 * @param context A Context object used to access application assets. 1005 * @param attrs An AttributeSet passed to our parent. 1006 * @param defStyle The default style resource ID. 1007 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1008 * object implementing those interfaces, as values. 1009 * @hide pending API council approval. 1010 */ 1011 protected WebView(Context context, AttributeSet attrs, int defStyle, 1012 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1013 super(context, attrs, defStyle); 1014 checkThread(); 1015 1016 // Used by the chrome stack to find application paths 1017 JniUtil.setContext(context); 1018 1019 mCallbackProxy = new CallbackProxy(context, this); 1020 mViewManager = new ViewManager(this); 1021 L10nUtils.setApplicationContext(context.getApplicationContext()); 1022 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1023 mDatabase = WebViewDatabase.getInstance(context); 1024 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1025 mZoomManager = new ZoomManager(this, mCallbackProxy); 1026 1027 /* The init method must follow the creation of certain member variables, 1028 * such as the mZoomManager. 1029 */ 1030 init(); 1031 setupPackageListener(context); 1032 setupProxyListener(context); 1033 updateMultiTouchSupport(context); 1034 1035 if (privateBrowsing) { 1036 startPrivateBrowsing(); 1037 } 1038 1039 mAutoFillData = new WebViewCore.AutoFillData(); 1040 } 1041 1042 private static class ProxyReceiver extends BroadcastReceiver { 1043 @Override 1044 public void onReceive(Context context, Intent intent) { 1045 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1046 handleProxyBroadcast(intent); 1047 } 1048 } 1049 } 1050 1051 /* 1052 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1053 */ 1054 private static ProxyReceiver sProxyReceiver; 1055 1056 /* 1057 * @param context This method expects this to be a valid context 1058 */ 1059 private static synchronized void setupProxyListener(Context context) { 1060 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1061 return; 1062 } 1063 IntentFilter filter = new IntentFilter(); 1064 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1065 sProxyReceiver = new ProxyReceiver(); 1066 Intent currentProxy = context.getApplicationContext().registerReceiver( 1067 sProxyReceiver, filter); 1068 if (currentProxy != null) { 1069 handleProxyBroadcast(currentProxy); 1070 } 1071 } 1072 1073 /* 1074 * @param context This method expects this to be a valid context 1075 */ 1076 private static synchronized void disableProxyListener(Context context) { 1077 if (sProxyReceiver == null) 1078 return; 1079 1080 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1081 sProxyReceiver = null; 1082 } 1083 1084 private static void handleProxyBroadcast(Intent intent) { 1085 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1086 if (proxyProperties == null || proxyProperties.getHost() == null) { 1087 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1088 return; 1089 } 1090 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1091 } 1092 1093 /* 1094 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1095 * or ACTION_PACKAGE_REMOVED. 1096 */ 1097 private static boolean sPackageInstallationReceiverAdded = false; 1098 1099 /* 1100 * A set of Google packages we monitor for the 1101 * navigator.isApplicationInstalled() API. Add additional packages as 1102 * needed. 1103 */ 1104 private static Set<String> sGoogleApps; 1105 static { 1106 sGoogleApps = new HashSet<String>(); 1107 sGoogleApps.add("com.google.android.youtube"); 1108 } 1109 1110 private static class PackageListener extends BroadcastReceiver { 1111 @Override 1112 public void onReceive(Context context, Intent intent) { 1113 final String action = intent.getAction(); 1114 final String packageName = intent.getData().getSchemeSpecificPart(); 1115 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1116 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1117 // if it is replacing, refreshPlugins() when adding 1118 return; 1119 } 1120 1121 if (sGoogleApps.contains(packageName)) { 1122 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1123 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1124 } else { 1125 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1126 } 1127 } 1128 1129 PluginManager pm = PluginManager.getInstance(context); 1130 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1131 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1132 } 1133 } 1134 } 1135 1136 private void setupPackageListener(Context context) { 1137 1138 /* 1139 * we must synchronize the instance check and the creation of the 1140 * receiver to ensure that only ONE receiver exists for all WebView 1141 * instances. 1142 */ 1143 synchronized (WebView.class) { 1144 1145 // if the receiver already exists then we do not need to register it 1146 // again 1147 if (sPackageInstallationReceiverAdded) { 1148 return; 1149 } 1150 1151 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1152 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1153 filter.addDataScheme("package"); 1154 BroadcastReceiver packageListener = new PackageListener(); 1155 context.getApplicationContext().registerReceiver(packageListener, filter); 1156 sPackageInstallationReceiverAdded = true; 1157 } 1158 1159 // check if any of the monitored apps are already installed 1160 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1161 1162 @Override 1163 protected Set<String> doInBackground(Void... unused) { 1164 Set<String> installedPackages = new HashSet<String>(); 1165 PackageManager pm = mContext.getPackageManager(); 1166 for (String name : sGoogleApps) { 1167 try { 1168 PackageInfo pInfo = pm.getPackageInfo(name, 1169 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1170 installedPackages.add(name); 1171 } catch (PackageManager.NameNotFoundException e) { 1172 // package not found 1173 } 1174 } 1175 return installedPackages; 1176 } 1177 1178 // Executes on the UI thread 1179 @Override 1180 protected void onPostExecute(Set<String> installedPackages) { 1181 if (mWebViewCore != null) { 1182 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1183 } 1184 } 1185 }; 1186 task.execute(); 1187 } 1188 1189 void updateMultiTouchSupport(Context context) { 1190 mZoomManager.updateMultiTouchSupport(context); 1191 } 1192 1193 private void init() { 1194 setWillNotDraw(false); 1195 setFocusable(true); 1196 setFocusableInTouchMode(true); 1197 setClickable(true); 1198 setLongClickable(true); 1199 1200 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1201 int slop = configuration.getScaledTouchSlop(); 1202 mTouchSlopSquare = slop * slop; 1203 slop = configuration.getScaledDoubleTapSlop(); 1204 mDoubleTapSlopSquare = slop * slop; 1205 final float density = getContext().getResources().getDisplayMetrics().density; 1206 // use one line height, 16 based on our current default font, for how 1207 // far we allow a touch be away from the edge of a link 1208 mNavSlop = (int) (16 * density); 1209 mZoomManager.init(density); 1210 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1211 1212 // Compute the inverse of the density squared. 1213 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1214 1215 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1216 mOverflingDistance = configuration.getScaledOverflingDistance(); 1217 1218 setScrollBarStyle(super.getScrollBarStyle()); 1219 // Initially use a size of two, since the user is likely to only hold 1220 // down two keys at a time (shift + another key) 1221 mKeysPressed = new Vector<Integer>(2); 1222 mHTML5VideoViewProxy = null ; 1223 } 1224 1225 @Override 1226 public boolean shouldDelayChildPressedState() { 1227 return true; 1228 } 1229 1230 /** 1231 * Adds accessibility APIs to JavaScript. 1232 * 1233 * Note: This method is responsible to performing the necessary 1234 * check if the accessibility APIs should be exposed. 1235 */ 1236 private void addAccessibilityApisToJavaScript() { 1237 if (AccessibilityManager.getInstance(mContext).isEnabled() 1238 && getSettings().getJavaScriptEnabled()) { 1239 // exposing the TTS for now ... 1240 mTextToSpeech = new TextToSpeech(getContext(), null); 1241 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1242 } 1243 } 1244 1245 /** 1246 * Removes accessibility APIs from JavaScript. 1247 */ 1248 private void removeAccessibilityApisFromJavaScript() { 1249 // exposing the TTS for now ... 1250 if (mTextToSpeech != null) { 1251 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1252 mTextToSpeech.shutdown(); 1253 mTextToSpeech = null; 1254 } 1255 } 1256 1257 @Override 1258 public void setOverScrollMode(int mode) { 1259 super.setOverScrollMode(mode); 1260 if (mode != OVER_SCROLL_NEVER) { 1261 if (mOverScrollGlow == null) { 1262 mOverScrollGlow = new OverScrollGlow(this); 1263 } 1264 } else { 1265 mOverScrollGlow = null; 1266 } 1267 } 1268 1269 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1270 final float density = mContext.getResources().getDisplayMetrics().density 1271 * 100 / zoomDensity; 1272 mNavSlop = (int) (16 * density); 1273 mZoomManager.updateDefaultZoomDensity(density); 1274 } 1275 1276 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1277 String password, final Message resumeMsg) { 1278 boolean rVal = false; 1279 if (resumeMsg == null) { 1280 // null resumeMsg implies saving password silently 1281 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1282 } else { 1283 final Message remember = mPrivateHandler.obtainMessage( 1284 REMEMBER_PASSWORD); 1285 remember.getData().putString("host", schemePlusHost); 1286 remember.getData().putString("username", username); 1287 remember.getData().putString("password", password); 1288 remember.obj = resumeMsg; 1289 1290 final Message neverRemember = mPrivateHandler.obtainMessage( 1291 NEVER_REMEMBER_PASSWORD); 1292 neverRemember.getData().putString("host", schemePlusHost); 1293 neverRemember.getData().putString("username", username); 1294 neverRemember.getData().putString("password", password); 1295 neverRemember.obj = resumeMsg; 1296 1297 new AlertDialog.Builder(getContext()) 1298 .setTitle(com.android.internal.R.string.save_password_label) 1299 .setMessage(com.android.internal.R.string.save_password_message) 1300 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1301 new DialogInterface.OnClickListener() { 1302 public void onClick(DialogInterface dialog, int which) { 1303 resumeMsg.sendToTarget(); 1304 } 1305 }) 1306 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1307 new DialogInterface.OnClickListener() { 1308 public void onClick(DialogInterface dialog, int which) { 1309 remember.sendToTarget(); 1310 } 1311 }) 1312 .setNegativeButton(com.android.internal.R.string.save_password_never, 1313 new DialogInterface.OnClickListener() { 1314 public void onClick(DialogInterface dialog, int which) { 1315 neverRemember.sendToTarget(); 1316 } 1317 }) 1318 .setOnCancelListener(new OnCancelListener() { 1319 public void onCancel(DialogInterface dialog) { 1320 resumeMsg.sendToTarget(); 1321 } 1322 }).show(); 1323 // Return true so that WebViewCore will pause while the dialog is 1324 // up. 1325 rVal = true; 1326 } 1327 return rVal; 1328 } 1329 1330 @Override 1331 public void setScrollBarStyle(int style) { 1332 if (style == View.SCROLLBARS_INSIDE_INSET 1333 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1334 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1335 } else { 1336 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1337 } 1338 super.setScrollBarStyle(style); 1339 } 1340 1341 /** 1342 * Specify whether the horizontal scrollbar has overlay style. 1343 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1344 */ 1345 public void setHorizontalScrollbarOverlay(boolean overlay) { 1346 checkThread(); 1347 mOverlayHorizontalScrollbar = overlay; 1348 } 1349 1350 /** 1351 * Specify whether the vertical scrollbar has overlay style. 1352 * @param overlay TRUE if vertical scrollbar should have overlay style. 1353 */ 1354 public void setVerticalScrollbarOverlay(boolean overlay) { 1355 checkThread(); 1356 mOverlayVerticalScrollbar = overlay; 1357 } 1358 1359 /** 1360 * Return whether horizontal scrollbar has overlay style 1361 * @return TRUE if horizontal scrollbar has overlay style. 1362 */ 1363 public boolean overlayHorizontalScrollbar() { 1364 checkThread(); 1365 return mOverlayHorizontalScrollbar; 1366 } 1367 1368 /** 1369 * Return whether vertical scrollbar has overlay style 1370 * @return TRUE if vertical scrollbar has overlay style. 1371 */ 1372 public boolean overlayVerticalScrollbar() { 1373 checkThread(); 1374 return mOverlayVerticalScrollbar; 1375 } 1376 1377 /* 1378 * Return the width of the view where the content of WebView should render 1379 * to. 1380 * Note: this can be called from WebCoreThread. 1381 */ 1382 /* package */ int getViewWidth() { 1383 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1384 return getWidth(); 1385 } else { 1386 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1387 } 1388 } 1389 1390 /** 1391 * returns the height of the titlebarview (if any). Does not care about 1392 * scrolling 1393 * @hide 1394 */ 1395 protected int getTitleHeight() { 1396 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1397 } 1398 1399 /** 1400 * Return the amount of the titlebarview (if any) that is visible 1401 * 1402 * @deprecated This method is now obsolete. 1403 */ 1404 public int getVisibleTitleHeight() { 1405 checkThread(); 1406 return getVisibleTitleHeightImpl(); 1407 } 1408 1409 private int getVisibleTitleHeightImpl() { 1410 // need to restrict mScrollY due to over scroll 1411 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1412 } 1413 1414 /* 1415 * Return the height of the view where the content of WebView should render 1416 * to. Note that this excludes mTitleBar, if there is one. 1417 * Note: this can be called from WebCoreThread. 1418 */ 1419 /* package */ int getViewHeight() { 1420 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1421 } 1422 1423 int getViewHeightWithTitle() { 1424 int height = getHeight(); 1425 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1426 height -= getHorizontalScrollbarHeight(); 1427 } 1428 return height; 1429 } 1430 1431 /** 1432 * @return The SSL certificate for the main top-level page or null if 1433 * there is no certificate (the site is not secure). 1434 */ 1435 public SslCertificate getCertificate() { 1436 checkThread(); 1437 return mCertificate; 1438 } 1439 1440 /** 1441 * Sets the SSL certificate for the main top-level page. 1442 */ 1443 public void setCertificate(SslCertificate certificate) { 1444 checkThread(); 1445 if (DebugFlags.WEB_VIEW) { 1446 Log.v(LOGTAG, "setCertificate=" + certificate); 1447 } 1448 // here, the certificate can be null (if the site is not secure) 1449 mCertificate = certificate; 1450 } 1451 1452 //------------------------------------------------------------------------- 1453 // Methods called by activity 1454 //------------------------------------------------------------------------- 1455 1456 /** 1457 * Save the username and password for a particular host in the WebView's 1458 * internal database. 1459 * @param host The host that required the credentials. 1460 * @param username The username for the given host. 1461 * @param password The password for the given host. 1462 */ 1463 public void savePassword(String host, String username, String password) { 1464 checkThread(); 1465 mDatabase.setUsernamePassword(host, username, password); 1466 } 1467 1468 /** 1469 * Set the HTTP authentication credentials for a given host and realm. 1470 * 1471 * @param host The host for the credentials. 1472 * @param realm The realm for the credentials. 1473 * @param username The username for the password. If it is null, it means 1474 * password can't be saved. 1475 * @param password The password 1476 */ 1477 public void setHttpAuthUsernamePassword(String host, String realm, 1478 String username, String password) { 1479 checkThread(); 1480 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1481 } 1482 1483 /** 1484 * Retrieve the HTTP authentication username and password for a given 1485 * host & realm pair 1486 * 1487 * @param host The host for which the credentials apply. 1488 * @param realm The realm for which the credentials apply. 1489 * @return String[] if found, String[0] is username, which can be null and 1490 * String[1] is password. Return null if it can't find anything. 1491 */ 1492 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1493 checkThread(); 1494 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1495 } 1496 1497 /** 1498 * Remove Find or Select ActionModes, if active. 1499 */ 1500 private void clearActionModes() { 1501 if (mSelectCallback != null) { 1502 mSelectCallback.finish(); 1503 } 1504 if (mFindCallback != null) { 1505 mFindCallback.finish(); 1506 } 1507 } 1508 1509 /** 1510 * Called to clear state when moving from one page to another, or changing 1511 * in some other way that makes elements associated with the current page 1512 * (such as WebTextView or ActionModes) no longer relevant. 1513 */ 1514 private void clearHelpers() { 1515 clearTextEntry(); 1516 clearActionModes(); 1517 dismissFullScreenMode(); 1518 } 1519 1520 /** 1521 * Destroy the internal state of the WebView. This method should be called 1522 * after the WebView has been removed from the view system. No other 1523 * methods may be called on a WebView after destroy. 1524 */ 1525 public void destroy() { 1526 checkThread(); 1527 destroyImpl(); 1528 } 1529 1530 private void destroyImpl() { 1531 clearHelpers(); 1532 if (mListBoxDialog != null) { 1533 mListBoxDialog.dismiss(); 1534 mListBoxDialog = null; 1535 } 1536 if (mNativeClass != 0) nativeStopGL(); 1537 if (mWebViewCore != null) { 1538 // Set the handlers to null before destroying WebViewCore so no 1539 // more messages will be posted. 1540 mCallbackProxy.setWebViewClient(null); 1541 mCallbackProxy.setWebChromeClient(null); 1542 // Tell WebViewCore to destroy itself 1543 synchronized (this) { 1544 WebViewCore webViewCore = mWebViewCore; 1545 mWebViewCore = null; // prevent using partial webViewCore 1546 webViewCore.destroy(); 1547 } 1548 // Remove any pending messages that might not be serviced yet. 1549 mPrivateHandler.removeCallbacksAndMessages(null); 1550 mCallbackProxy.removeCallbacksAndMessages(null); 1551 // Wake up the WebCore thread just in case it is waiting for a 1552 // JavaScript dialog. 1553 synchronized (mCallbackProxy) { 1554 mCallbackProxy.notify(); 1555 } 1556 } 1557 if (mNativeClass != 0) { 1558 nativeDestroy(); 1559 mNativeClass = 0; 1560 } 1561 } 1562 1563 /** 1564 * Enables platform notifications of data state and proxy changes. 1565 * Notifications are enabled by default. 1566 * 1567 * @deprecated This method is now obsolete. 1568 */ 1569 @Deprecated 1570 public static void enablePlatformNotifications() { 1571 checkThread(); 1572 synchronized (WebView.class) { 1573 Network.enablePlatformNotifications(); 1574 sNotificationsEnabled = true; 1575 Context context = JniUtil.getContext(); 1576 if (context != null) 1577 setupProxyListener(context); 1578 } 1579 } 1580 1581 /** 1582 * Disables platform notifications of data state and proxy changes. 1583 * Notifications are enabled by default. 1584 * 1585 * @deprecated This method is now obsolete. 1586 */ 1587 @Deprecated 1588 public static void disablePlatformNotifications() { 1589 checkThread(); 1590 synchronized (WebView.class) { 1591 Network.disablePlatformNotifications(); 1592 sNotificationsEnabled = false; 1593 Context context = JniUtil.getContext(); 1594 if (context != null) 1595 disableProxyListener(context); 1596 } 1597 } 1598 1599 /** 1600 * Sets JavaScript engine flags. 1601 * 1602 * @param flags JS engine flags in a String 1603 * 1604 * @hide pending API solidification 1605 */ 1606 public void setJsFlags(String flags) { 1607 checkThread(); 1608 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1609 } 1610 1611 /** 1612 * Inform WebView of the network state. This is used to set 1613 * the JavaScript property window.navigator.isOnline and 1614 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1615 * @param networkUp boolean indicating if network is available 1616 */ 1617 public void setNetworkAvailable(boolean networkUp) { 1618 checkThread(); 1619 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1620 networkUp ? 1 : 0, 0); 1621 } 1622 1623 /** 1624 * Inform WebView about the current network type. 1625 * {@hide} 1626 */ 1627 public void setNetworkType(String type, String subtype) { 1628 checkThread(); 1629 Map<String, String> map = new HashMap<String, String>(); 1630 map.put("type", type); 1631 map.put("subtype", subtype); 1632 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1633 } 1634 /** 1635 * Save the state of this WebView used in 1636 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1637 * method no longer stores the display data for this WebView. The previous 1638 * behavior could potentially leak files if {@link #restoreState} was never 1639 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1640 * and restoring the display data. 1641 * @param outState The Bundle to store the WebView state. 1642 * @return The same copy of the back/forward list used to save the state. If 1643 * saveState fails, the returned list will be null. 1644 * @see #savePicture 1645 * @see #restorePicture 1646 */ 1647 public WebBackForwardList saveState(Bundle outState) { 1648 checkThread(); 1649 if (outState == null) { 1650 return null; 1651 } 1652 // We grab a copy of the back/forward list because a client of WebView 1653 // may have invalidated the history list by calling clearHistory. 1654 WebBackForwardList list = copyBackForwardList(); 1655 final int currentIndex = list.getCurrentIndex(); 1656 final int size = list.getSize(); 1657 // We should fail saving the state if the list is empty or the index is 1658 // not in a valid range. 1659 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1660 return null; 1661 } 1662 outState.putInt("index", currentIndex); 1663 // FIXME: This should just be a byte[][] instead of ArrayList but 1664 // Parcel.java does not have the code to handle multi-dimensional 1665 // arrays. 1666 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1667 for (int i = 0; i < size; i++) { 1668 WebHistoryItem item = list.getItemAtIndex(i); 1669 if (null == item) { 1670 // FIXME: this shouldn't happen 1671 // need to determine how item got set to null 1672 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1673 return null; 1674 } 1675 byte[] data = item.getFlattenedData(); 1676 if (data == null) { 1677 // It would be very odd to not have any data for a given history 1678 // item. And we will fail to rebuild the history list without 1679 // flattened data. 1680 return null; 1681 } 1682 history.add(data); 1683 } 1684 outState.putSerializable("history", history); 1685 if (mCertificate != null) { 1686 outState.putBundle("certificate", 1687 SslCertificate.saveState(mCertificate)); 1688 } 1689 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1690 mZoomManager.saveZoomState(outState); 1691 return list; 1692 } 1693 1694 /** 1695 * Save the current display data to the Bundle given. Used in conjunction 1696 * with {@link #saveState}. 1697 * @param b A Bundle to store the display data. 1698 * @param dest The file to store the serialized picture data. Will be 1699 * overwritten with this WebView's picture data. 1700 * @return True if the picture was successfully saved. 1701 * @deprecated This method is now obsolete. 1702 */ 1703 @Deprecated 1704 public boolean savePicture(Bundle b, final File dest) { 1705 checkThread(); 1706 if (dest == null || b == null) { 1707 return false; 1708 } 1709 final Picture p = capturePicture(); 1710 // Use a temporary file while writing to ensure the destination file 1711 // contains valid data. 1712 final File temp = new File(dest.getPath() + ".writing"); 1713 new Thread(new Runnable() { 1714 public void run() { 1715 FileOutputStream out = null; 1716 try { 1717 out = new FileOutputStream(temp); 1718 p.writeToStream(out); 1719 // Writing the picture succeeded, rename the temporary file 1720 // to the destination. 1721 temp.renameTo(dest); 1722 } catch (Exception e) { 1723 // too late to do anything about it. 1724 } finally { 1725 if (out != null) { 1726 try { 1727 out.close(); 1728 } catch (Exception e) { 1729 // Can't do anything about that 1730 } 1731 } 1732 temp.delete(); 1733 } 1734 } 1735 }).start(); 1736 // now update the bundle 1737 b.putInt("scrollX", mScrollX); 1738 b.putInt("scrollY", mScrollY); 1739 mZoomManager.saveZoomState(b); 1740 return true; 1741 } 1742 1743 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1744 int sx = b.getInt("scrollX", 0); 1745 int sy = b.getInt("scrollY", 0); 1746 1747 mDrawHistory = true; 1748 mHistoryPicture = p; 1749 1750 mScrollX = sx; 1751 mScrollY = sy; 1752 mZoomManager.restoreZoomState(b); 1753 final float scale = mZoomManager.getScale(); 1754 mHistoryWidth = Math.round(p.getWidth() * scale); 1755 mHistoryHeight = Math.round(p.getHeight() * scale); 1756 1757 invalidate(); 1758 } 1759 1760 /** 1761 * Restore the display data that was save in {@link #savePicture}. Used in 1762 * conjunction with {@link #restoreState}. 1763 * @param b A Bundle containing the saved display data. 1764 * @param src The file where the picture data was stored. 1765 * @return True if the picture was successfully restored. 1766 * @deprecated This method is now obsolete. 1767 */ 1768 @Deprecated 1769 public boolean restorePicture(Bundle b, File src) { 1770 checkThread(); 1771 if (src == null || b == null) { 1772 return false; 1773 } 1774 if (!src.exists()) { 1775 return false; 1776 } 1777 try { 1778 final FileInputStream in = new FileInputStream(src); 1779 final Bundle copy = new Bundle(b); 1780 new Thread(new Runnable() { 1781 public void run() { 1782 try { 1783 final Picture p = Picture.createFromStream(in); 1784 if (p != null) { 1785 // Post a runnable on the main thread to update the 1786 // history picture fields. 1787 mPrivateHandler.post(new Runnable() { 1788 public void run() { 1789 restoreHistoryPictureFields(p, copy); 1790 } 1791 }); 1792 } 1793 } finally { 1794 try { 1795 in.close(); 1796 } catch (Exception e) { 1797 // Nothing we can do now. 1798 } 1799 } 1800 } 1801 }).start(); 1802 } catch (FileNotFoundException e){ 1803 e.printStackTrace(); 1804 } 1805 return true; 1806 } 1807 1808 /** 1809 * Saves the view data to the output stream. The output is highly 1810 * version specific, and may not be able to be loaded by newer versions 1811 * of WebView. 1812 * @param stream The {@link OutputStream} to save to 1813 * @return True if saved successfully 1814 * @hide 1815 */ 1816 public boolean saveViewState(OutputStream stream) { 1817 try { 1818 return ViewStateSerializer.serializeViewState(stream, this); 1819 } catch (IOException e) { 1820 Log.w(LOGTAG, "Failed to saveViewState", e); 1821 } 1822 return false; 1823 } 1824 1825 /** 1826 * Loads the view data from the input stream. See 1827 * {@link #saveViewState(OutputStream)} for more information. 1828 * @param stream The {@link InputStream} to load from 1829 * @return True if loaded successfully 1830 * @hide 1831 */ 1832 public boolean loadViewState(InputStream stream) { 1833 try { 1834 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1835 mBlockWebkitViewMessages = true; 1836 setNewPicture(mLoadedPicture, true); 1837 return true; 1838 } catch (IOException e) { 1839 Log.w(LOGTAG, "Failed to loadViewState", e); 1840 } 1841 return false; 1842 } 1843 1844 /** 1845 * Clears the view state set with {@link #loadViewState(InputStream)}. 1846 * This WebView will then switch to showing the content from webkit 1847 * @hide 1848 */ 1849 public void clearViewState() { 1850 mBlockWebkitViewMessages = false; 1851 mLoadedPicture = null; 1852 invalidate(); 1853 } 1854 1855 /** 1856 * Restore the state of this WebView from the given map used in 1857 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1858 * be called to restore the state of the WebView before using the object. If 1859 * it is called after the WebView has had a chance to build state (load 1860 * pages, create a back/forward list, etc.) there may be undesirable 1861 * side-effects. Please note that this method no longer restores the 1862 * display data for this WebView. See {@link #savePicture} and {@link 1863 * #restorePicture} for saving and restoring the display data. 1864 * @param inState The incoming Bundle of state. 1865 * @return The restored back/forward list or null if restoreState failed. 1866 * @see #savePicture 1867 * @see #restorePicture 1868 */ 1869 public WebBackForwardList restoreState(Bundle inState) { 1870 checkThread(); 1871 WebBackForwardList returnList = null; 1872 if (inState == null) { 1873 return returnList; 1874 } 1875 if (inState.containsKey("index") && inState.containsKey("history")) { 1876 mCertificate = SslCertificate.restoreState( 1877 inState.getBundle("certificate")); 1878 1879 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1880 final int index = inState.getInt("index"); 1881 // We can't use a clone of the list because we need to modify the 1882 // shared copy, so synchronize instead to prevent concurrent 1883 // modifications. 1884 synchronized (list) { 1885 final List<byte[]> history = 1886 (List<byte[]>) inState.getSerializable("history"); 1887 final int size = history.size(); 1888 // Check the index bounds so we don't crash in native code while 1889 // restoring the history index. 1890 if (index < 0 || index >= size) { 1891 return null; 1892 } 1893 for (int i = 0; i < size; i++) { 1894 byte[] data = history.remove(0); 1895 if (data == null) { 1896 // If we somehow have null data, we cannot reconstruct 1897 // the item and thus our history list cannot be rebuilt. 1898 return null; 1899 } 1900 WebHistoryItem item = new WebHistoryItem(data); 1901 list.addHistoryItem(item); 1902 } 1903 // Grab the most recent copy to return to the caller. 1904 returnList = copyBackForwardList(); 1905 // Update the copy to have the correct index. 1906 returnList.setCurrentIndex(index); 1907 } 1908 // Restore private browsing setting. 1909 if (inState.getBoolean("privateBrowsingEnabled")) { 1910 getSettings().setPrivateBrowsingEnabled(true); 1911 } 1912 mZoomManager.restoreZoomState(inState); 1913 // Remove all pending messages because we are restoring previous 1914 // state. 1915 mWebViewCore.removeMessages(); 1916 // Send a restore state message. 1917 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1918 } 1919 return returnList; 1920 } 1921 1922 /** 1923 * Load the given url with the extra headers. 1924 * @param url The url of the resource to load. 1925 * @param extraHeaders The extra headers sent with this url. This should not 1926 * include the common headers like "user-agent". If it does, it 1927 * will be replaced by the intrinsic value of the WebView. 1928 */ 1929 public void loadUrl(String url, Map<String, String> extraHeaders) { 1930 checkThread(); 1931 loadUrlImpl(url, extraHeaders); 1932 } 1933 1934 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 1935 switchOutDrawHistory(); 1936 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1937 arg.mUrl = url; 1938 arg.mExtraHeaders = extraHeaders; 1939 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1940 clearHelpers(); 1941 } 1942 1943 /** 1944 * Load the given url. 1945 * @param url The url of the resource to load. 1946 */ 1947 public void loadUrl(String url) { 1948 checkThread(); 1949 loadUrlImpl(url); 1950 } 1951 1952 private void loadUrlImpl(String url) { 1953 if (url == null) { 1954 return; 1955 } 1956 loadUrlImpl(url, null); 1957 } 1958 1959 /** 1960 * Load the url with postData using "POST" method into the WebView. If url 1961 * is not a network url, it will be loaded with {link 1962 * {@link #loadUrl(String)} instead. 1963 * 1964 * @param url The url of the resource to load. 1965 * @param postData The data will be passed to "POST" request. 1966 */ 1967 public void postUrl(String url, byte[] postData) { 1968 checkThread(); 1969 if (URLUtil.isNetworkUrl(url)) { 1970 switchOutDrawHistory(); 1971 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1972 arg.mUrl = url; 1973 arg.mPostData = postData; 1974 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1975 clearHelpers(); 1976 } else { 1977 loadUrlImpl(url); 1978 } 1979 } 1980 1981 /** 1982 * Load the given data into the WebView using a 'data' scheme URL. 1983 * <p> 1984 * Note that JavaScript's same origin policy means that script running in a 1985 * page loaded using this method will be unable to access content loaded 1986 * using any scheme other than 'data', including 'http(s)'. To avoid this 1987 * restriction, use {@link 1988 * #loadDataWithBaseURL(String,String,String,String,String) 1989 * loadDataWithBaseURL()} with an appropriate base URL. 1990 * <p> 1991 * If the value of the encoding parameter is 'base64', then the data must 1992 * be encoded as base64. Otherwise, the data must use ASCII encoding for 1993 * octets inside the range of safe URL characters and use the standard %xx 1994 * hex encoding of URLs for octets outside that range. 1995 * @param data A String of data in the given encoding. 1996 * @param mimeType The MIMEType of the data, e.g. 'text/html'. 1997 * @param encoding The encoding of the data. 1998 */ 1999 public void loadData(String data, String mimeType, String encoding) { 2000 checkThread(); 2001 loadDataImpl(data, mimeType, encoding); 2002 } 2003 2004 private void loadDataImpl(String data, String mimeType, String encoding) { 2005 StringBuilder dataUrl = new StringBuilder("data:"); 2006 dataUrl.append(mimeType); 2007 if ("base64".equals(encoding)) { 2008 dataUrl.append(";base64"); 2009 } 2010 dataUrl.append(","); 2011 dataUrl.append(data); 2012 loadUrlImpl(dataUrl.toString()); 2013 } 2014 2015 /** 2016 * Load the given data into the WebView, using baseUrl as the base URL for 2017 * the content. The base URL is used both to resolve relative URLs and when 2018 * applying JavaScript's same origin policy. The historyUrl is used for the 2019 * history entry. 2020 * <p> 2021 * Note that content specified in this way can access local device files 2022 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2023 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2024 * <p> 2025 * If the base URL uses the data scheme, this method is equivalent to 2026 * calling {@link #loadData(String,String,String) loadData()} and the 2027 * historyUrl is ignored. 2028 * @param baseUrl URL to use as the page's base URL. If null defaults to 2029 * 'about:blank' 2030 * @param data A String of data in the given encoding. 2031 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2032 * defaults to 'text/html'. 2033 * @param encoding The encoding of the data. 2034 * @param historyUrl URL to use as the history entry, if null defaults to 2035 * 'about:blank'. 2036 */ 2037 public void loadDataWithBaseURL(String baseUrl, String data, 2038 String mimeType, String encoding, String historyUrl) { 2039 checkThread(); 2040 2041 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2042 loadDataImpl(data, mimeType, encoding); 2043 return; 2044 } 2045 switchOutDrawHistory(); 2046 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2047 arg.mBaseUrl = baseUrl; 2048 arg.mData = data; 2049 arg.mMimeType = mimeType; 2050 arg.mEncoding = encoding; 2051 arg.mHistoryUrl = historyUrl; 2052 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2053 clearHelpers(); 2054 } 2055 2056 /** 2057 * Saves the current view as a web archive. 2058 * 2059 * @param filename The filename where the archive should be placed. 2060 */ 2061 public void saveWebArchive(String filename) { 2062 checkThread(); 2063 saveWebArchiveImpl(filename, false, null); 2064 } 2065 2066 /* package */ static class SaveWebArchiveMessage { 2067 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2068 mBasename = basename; 2069 mAutoname = autoname; 2070 mCallback = callback; 2071 } 2072 2073 /* package */ final String mBasename; 2074 /* package */ final boolean mAutoname; 2075 /* package */ final ValueCallback<String> mCallback; 2076 /* package */ String mResultFile; 2077 } 2078 2079 /** 2080 * Saves the current view as a web archive. 2081 * 2082 * @param basename The filename where the archive should be placed. 2083 * @param autoname If false, takes basename to be a file. If true, basename 2084 * is assumed to be a directory in which a filename will be 2085 * chosen according to the url of the current page. 2086 * @param callback Called after the web archive has been saved. The 2087 * parameter for onReceiveValue will either be the filename 2088 * under which the file was saved, or null if saving the 2089 * file failed. 2090 */ 2091 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2092 checkThread(); 2093 saveWebArchiveImpl(basename, autoname, callback); 2094 } 2095 2096 private void saveWebArchiveImpl(String basename, boolean autoname, 2097 ValueCallback<String> callback) { 2098 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2099 new SaveWebArchiveMessage(basename, autoname, callback)); 2100 } 2101 2102 /** 2103 * Stop the current load. 2104 */ 2105 public void stopLoading() { 2106 checkThread(); 2107 // TODO: should we clear all the messages in the queue before sending 2108 // STOP_LOADING? 2109 switchOutDrawHistory(); 2110 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2111 } 2112 2113 /** 2114 * Reload the current url. 2115 */ 2116 public void reload() { 2117 checkThread(); 2118 clearHelpers(); 2119 switchOutDrawHistory(); 2120 mWebViewCore.sendMessage(EventHub.RELOAD); 2121 } 2122 2123 /** 2124 * Return true if this WebView has a back history item. 2125 * @return True iff this WebView has a back history item. 2126 */ 2127 public boolean canGoBack() { 2128 checkThread(); 2129 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2130 synchronized (l) { 2131 if (l.getClearPending()) { 2132 return false; 2133 } else { 2134 return l.getCurrentIndex() > 0; 2135 } 2136 } 2137 } 2138 2139 /** 2140 * Go back in the history of this WebView. 2141 */ 2142 public void goBack() { 2143 checkThread(); 2144 goBackOrForwardImpl(-1); 2145 } 2146 2147 /** 2148 * Return true if this WebView has a forward history item. 2149 * @return True iff this Webview has a forward history item. 2150 */ 2151 public boolean canGoForward() { 2152 checkThread(); 2153 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2154 synchronized (l) { 2155 if (l.getClearPending()) { 2156 return false; 2157 } else { 2158 return l.getCurrentIndex() < l.getSize() - 1; 2159 } 2160 } 2161 } 2162 2163 /** 2164 * Go forward in the history of this WebView. 2165 */ 2166 public void goForward() { 2167 checkThread(); 2168 goBackOrForwardImpl(1); 2169 } 2170 2171 /** 2172 * Return true if the page can go back or forward the given 2173 * number of steps. 2174 * @param steps The negative or positive number of steps to move the 2175 * history. 2176 */ 2177 public boolean canGoBackOrForward(int steps) { 2178 checkThread(); 2179 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2180 synchronized (l) { 2181 if (l.getClearPending()) { 2182 return false; 2183 } else { 2184 int newIndex = l.getCurrentIndex() + steps; 2185 return newIndex >= 0 && newIndex < l.getSize(); 2186 } 2187 } 2188 } 2189 2190 /** 2191 * Go to the history item that is the number of steps away from 2192 * the current item. Steps is negative if backward and positive 2193 * if forward. 2194 * @param steps The number of steps to take back or forward in the back 2195 * forward list. 2196 */ 2197 public void goBackOrForward(int steps) { 2198 checkThread(); 2199 goBackOrForwardImpl(steps); 2200 } 2201 2202 private void goBackOrForwardImpl(int steps) { 2203 goBackOrForward(steps, false); 2204 } 2205 2206 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2207 if (steps != 0) { 2208 clearHelpers(); 2209 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2210 ignoreSnapshot ? 1 : 0); 2211 } 2212 } 2213 2214 /** 2215 * Returns true if private browsing is enabled in this WebView. 2216 */ 2217 public boolean isPrivateBrowsingEnabled() { 2218 checkThread(); 2219 return getSettings().isPrivateBrowsingEnabled(); 2220 } 2221 2222 private void startPrivateBrowsing() { 2223 getSettings().setPrivateBrowsingEnabled(true); 2224 } 2225 2226 private boolean extendScroll(int y) { 2227 int finalY = mScroller.getFinalY(); 2228 int newY = pinLocY(finalY + y); 2229 if (newY == finalY) return false; 2230 mScroller.setFinalY(newY); 2231 mScroller.extendDuration(computeDuration(0, y)); 2232 return true; 2233 } 2234 2235 /** 2236 * Scroll the contents of the view up by half the view size 2237 * @param top true to jump to the top of the page 2238 * @return true if the page was scrolled 2239 */ 2240 public boolean pageUp(boolean top) { 2241 checkThread(); 2242 if (mNativeClass == 0) { 2243 return false; 2244 } 2245 nativeClearCursor(); // start next trackball movement from page edge 2246 if (top) { 2247 // go to the top of the document 2248 return pinScrollTo(mScrollX, 0, true, 0); 2249 } 2250 // Page up 2251 int h = getHeight(); 2252 int y; 2253 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2254 y = -h + PAGE_SCROLL_OVERLAP; 2255 } else { 2256 y = -h / 2; 2257 } 2258 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2259 : extendScroll(y); 2260 } 2261 2262 /** 2263 * Scroll the contents of the view down by half the page size 2264 * @param bottom true to jump to bottom of page 2265 * @return true if the page was scrolled 2266 */ 2267 public boolean pageDown(boolean bottom) { 2268 checkThread(); 2269 if (mNativeClass == 0) { 2270 return false; 2271 } 2272 nativeClearCursor(); // start next trackball movement from page edge 2273 if (bottom) { 2274 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2275 } 2276 // Page down. 2277 int h = getHeight(); 2278 int y; 2279 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2280 y = h - PAGE_SCROLL_OVERLAP; 2281 } else { 2282 y = h / 2; 2283 } 2284 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2285 : extendScroll(y); 2286 } 2287 2288 /** 2289 * Clear the view so that onDraw() will draw nothing but white background, 2290 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2291 */ 2292 public void clearView() { 2293 checkThread(); 2294 mContentWidth = 0; 2295 mContentHeight = 0; 2296 setBaseLayer(0, null, false, false, false); 2297 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2298 } 2299 2300 /** 2301 * Return a new picture that captures the current display of the webview. 2302 * This is a copy of the display, and will be unaffected if the webview 2303 * later loads a different URL. 2304 * 2305 * @return a picture containing the current contents of the view. Note this 2306 * picture is of the entire document, and is not restricted to the 2307 * bounds of the view. 2308 */ 2309 public Picture capturePicture() { 2310 checkThread(); 2311 if (mNativeClass == 0) return null; 2312 Picture result = new Picture(); 2313 nativeCopyBaseContentToPicture(result); 2314 return result; 2315 } 2316 2317 /** 2318 * Return true if the browser is displaying a TextView for text input. 2319 */ 2320 private boolean inEditingMode() { 2321 return mWebTextView != null && mWebTextView.getParent() != null; 2322 } 2323 2324 /** 2325 * Remove the WebTextView. 2326 */ 2327 private void clearTextEntry() { 2328 if (inEditingMode()) { 2329 mWebTextView.remove(); 2330 } else { 2331 // The keyboard may be open with the WebView as the served view 2332 hideSoftKeyboard(); 2333 } 2334 } 2335 2336 /** 2337 * Return the current scale of the WebView 2338 * @return The current scale. 2339 */ 2340 public float getScale() { 2341 checkThread(); 2342 return mZoomManager.getScale(); 2343 } 2344 2345 /** 2346 * Set the initial scale for the WebView. 0 means default. If 2347 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2348 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2349 * WebView starts will this value as initial scale. 2350 * 2351 * @param scaleInPercent The initial scale in percent. 2352 */ 2353 public void setInitialScale(int scaleInPercent) { 2354 checkThread(); 2355 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2356 } 2357 2358 /** 2359 * Invoke the graphical zoom picker widget for this WebView. This will 2360 * result in the zoom widget appearing on the screen to control the zoom 2361 * level of this WebView. 2362 */ 2363 public void invokeZoomPicker() { 2364 checkThread(); 2365 if (!getSettings().supportZoom()) { 2366 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2367 return; 2368 } 2369 clearHelpers(); 2370 mZoomManager.invokeZoomPicker(); 2371 } 2372 2373 /** 2374 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2375 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2376 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2377 * anchor does not have a url or if it is a JavaScript url, the type will 2378 * be UNKNOWN_TYPE and the url has to be retrieved through 2379 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2380 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2381 * the "extra" field. A type of 2382 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2383 * a child node. If a phone number is found, the HitTestResult type is set 2384 * to PHONE_TYPE and the phone number is set in the "extra" field of 2385 * HitTestResult. If a map address is found, the HitTestResult type is set 2386 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2387 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2388 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2389 * HitTestResult type is set to UNKNOWN_TYPE. 2390 */ 2391 public HitTestResult getHitTestResult() { 2392 checkThread(); 2393 return hitTestResult(mInitialHitTestResult); 2394 } 2395 2396 private HitTestResult hitTestResult(HitTestResult fallback) { 2397 if (mNativeClass == 0) { 2398 return null; 2399 } 2400 2401 HitTestResult result = new HitTestResult(); 2402 if (nativeHasCursorNode()) { 2403 if (nativeCursorIsTextInput()) { 2404 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2405 } else { 2406 String text = nativeCursorText(); 2407 if (text != null) { 2408 if (text.startsWith(SCHEME_TEL)) { 2409 result.setType(HitTestResult.PHONE_TYPE); 2410 result.setExtra(text.substring(SCHEME_TEL.length())); 2411 } else if (text.startsWith(SCHEME_MAILTO)) { 2412 result.setType(HitTestResult.EMAIL_TYPE); 2413 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2414 } else if (text.startsWith(SCHEME_GEO)) { 2415 result.setType(HitTestResult.GEO_TYPE); 2416 result.setExtra(URLDecoder.decode(text 2417 .substring(SCHEME_GEO.length()))); 2418 } else if (nativeCursorIsAnchor()) { 2419 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2420 result.setExtra(text); 2421 } 2422 } 2423 } 2424 } else if (fallback != null) { 2425 /* If webkit causes a rebuild while the long press is in progress, 2426 * the cursor node may be reset, even if it is still around. This 2427 * uses the cursor node saved when the touch began. Since the 2428 * nativeImageURI below only changes the result if it is successful, 2429 * this uses the data beneath the touch if available or the original 2430 * tap data otherwise. 2431 */ 2432 Log.v(LOGTAG, "hitTestResult use fallback"); 2433 result = fallback; 2434 } 2435 int type = result.getType(); 2436 if (type == HitTestResult.UNKNOWN_TYPE 2437 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2438 // Now check to see if it is an image. 2439 int contentX = viewToContentX(mLastTouchX + mScrollX); 2440 int contentY = viewToContentY(mLastTouchY + mScrollY); 2441 String text = nativeImageURI(contentX, contentY); 2442 if (text != null) { 2443 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2444 HitTestResult.IMAGE_TYPE : 2445 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2446 result.setExtra(text); 2447 } 2448 } 2449 return result; 2450 } 2451 2452 // Called by JNI when the DOM has changed the focus. Clear the focus so 2453 // that new keys will go to the newly focused field 2454 private void domChangedFocus() { 2455 if (inEditingMode()) { 2456 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2457 } 2458 } 2459 /** 2460 * Request the anchor or image element URL at the last tapped point. 2461 * If hrefMsg is null, this method returns immediately and does not 2462 * dispatch hrefMsg to its target. If the tapped point hits an image, 2463 * an anchor, or an image in an anchor, the message associates 2464 * strings in named keys in its data. The value paired with the key 2465 * may be an empty string. 2466 * 2467 * @param hrefMsg This message will be dispatched with the result of the 2468 * request. The message data contains three keys: 2469 * - "url" returns the anchor's href attribute. 2470 * - "title" returns the anchor's text. 2471 * - "src" returns the image's src attribute. 2472 */ 2473 public void requestFocusNodeHref(Message hrefMsg) { 2474 checkThread(); 2475 if (hrefMsg == null) { 2476 return; 2477 } 2478 int contentX = viewToContentX(mLastTouchX + mScrollX); 2479 int contentY = viewToContentY(mLastTouchY + mScrollY); 2480 if (nativeHasCursorNode()) { 2481 Rect cursorBounds = nativeGetCursorRingBounds(); 2482 if (!cursorBounds.contains(contentX, contentY)) { 2483 int slop = viewToContentDimension(mNavSlop); 2484 cursorBounds.inset(-slop, -slop); 2485 if (cursorBounds.contains(contentX, contentY)) { 2486 contentX = (int) cursorBounds.centerX(); 2487 contentY = (int) cursorBounds.centerY(); 2488 } 2489 } 2490 } 2491 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2492 contentX, contentY, hrefMsg); 2493 } 2494 2495 /** 2496 * Request the url of the image last touched by the user. msg will be sent 2497 * to its target with a String representing the url as its object. 2498 * 2499 * @param msg This message will be dispatched with the result of the request 2500 * as the data member with "url" as key. The result can be null. 2501 */ 2502 public void requestImageRef(Message msg) { 2503 checkThread(); 2504 if (0 == mNativeClass) return; // client isn't initialized 2505 int contentX = viewToContentX(mLastTouchX + mScrollX); 2506 int contentY = viewToContentY(mLastTouchY + mScrollY); 2507 String ref = nativeImageURI(contentX, contentY); 2508 Bundle data = msg.getData(); 2509 data.putString("url", ref); 2510 msg.setData(data); 2511 msg.sendToTarget(); 2512 } 2513 2514 static int pinLoc(int x, int viewMax, int docMax) { 2515// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2516 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2517 // pin the short document to the top/left of the screen 2518 x = 0; 2519// Log.d(LOGTAG, "--- center " + x); 2520 } else if (x < 0) { 2521 x = 0; 2522// Log.d(LOGTAG, "--- zero"); 2523 } else if (x + viewMax > docMax) { 2524 x = docMax - viewMax; 2525// Log.d(LOGTAG, "--- pin " + x); 2526 } 2527 return x; 2528 } 2529 2530 // Expects x in view coordinates 2531 int pinLocX(int x) { 2532 if (mInOverScrollMode) return x; 2533 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2534 } 2535 2536 // Expects y in view coordinates 2537 int pinLocY(int y) { 2538 if (mInOverScrollMode) return y; 2539 return pinLoc(y, getViewHeightWithTitle(), 2540 computeRealVerticalScrollRange() + getTitleHeight()); 2541 } 2542 2543 /** 2544 * A title bar which is embedded in this WebView, and scrolls along with it 2545 * vertically, but not horizontally. 2546 */ 2547 private View mTitleBar; 2548 2549 /** 2550 * the title bar rendering gravity 2551 */ 2552 private int mTitleGravity; 2553 2554 /** 2555 * Add or remove a title bar to be embedded into the WebView, and scroll 2556 * along with it vertically, while remaining in view horizontally. Pass 2557 * null to remove the title bar from the WebView, and return to drawing 2558 * the WebView normally without translating to account for the title bar. 2559 * @hide 2560 */ 2561 public void setEmbeddedTitleBar(View v) { 2562 if (mTitleBar == v) return; 2563 if (mTitleBar != null) { 2564 removeView(mTitleBar); 2565 } 2566 if (null != v) { 2567 addView(v, new AbsoluteLayout.LayoutParams( 2568 ViewGroup.LayoutParams.MATCH_PARENT, 2569 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2570 } 2571 mTitleBar = v; 2572 } 2573 2574 /** 2575 * Set where to render the embedded title bar 2576 * NO_GRAVITY at the top of the page 2577 * TOP at the top of the screen 2578 * @hide 2579 */ 2580 public void setTitleBarGravity(int gravity) { 2581 mTitleGravity = gravity; 2582 // force refresh 2583 invalidate(); 2584 } 2585 2586 /** 2587 * Given a distance in view space, convert it to content space. Note: this 2588 * does not reflect translation, just scaling, so this should not be called 2589 * with coordinates, but should be called for dimensions like width or 2590 * height. 2591 */ 2592 private int viewToContentDimension(int d) { 2593 return Math.round(d * mZoomManager.getInvScale()); 2594 } 2595 2596 /** 2597 * Given an x coordinate in view space, convert it to content space. Also 2598 * may be used for absolute heights (such as for the WebTextView's 2599 * textSize, which is unaffected by the height of the title bar). 2600 */ 2601 /*package*/ int viewToContentX(int x) { 2602 return viewToContentDimension(x); 2603 } 2604 2605 /** 2606 * Given a y coordinate in view space, convert it to content space. 2607 * Takes into account the height of the title bar if there is one 2608 * embedded into the WebView. 2609 */ 2610 /*package*/ int viewToContentY(int y) { 2611 return viewToContentDimension(y - getTitleHeight()); 2612 } 2613 2614 /** 2615 * Given a x coordinate in view space, convert it to content space. 2616 * Returns the result as a float. 2617 */ 2618 private float viewToContentXf(int x) { 2619 return x * mZoomManager.getInvScale(); 2620 } 2621 2622 /** 2623 * Given a y coordinate in view space, convert it to content space. 2624 * Takes into account the height of the title bar if there is one 2625 * embedded into the WebView. Returns the result as a float. 2626 */ 2627 private float viewToContentYf(int y) { 2628 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2629 } 2630 2631 /** 2632 * Given a distance in content space, convert it to view space. Note: this 2633 * does not reflect translation, just scaling, so this should not be called 2634 * with coordinates, but should be called for dimensions like width or 2635 * height. 2636 */ 2637 /*package*/ int contentToViewDimension(int d) { 2638 return Math.round(d * mZoomManager.getScale()); 2639 } 2640 2641 /** 2642 * Given an x coordinate in content space, convert it to view 2643 * space. 2644 */ 2645 /*package*/ int contentToViewX(int x) { 2646 return contentToViewDimension(x); 2647 } 2648 2649 /** 2650 * Given a y coordinate in content space, convert it to view 2651 * space. Takes into account the height of the title bar. 2652 */ 2653 /*package*/ int contentToViewY(int y) { 2654 return contentToViewDimension(y) + getTitleHeight(); 2655 } 2656 2657 private Rect contentToViewRect(Rect x) { 2658 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2659 contentToViewX(x.right), contentToViewY(x.bottom)); 2660 } 2661 2662 /* To invalidate a rectangle in content coordinates, we need to transform 2663 the rect into view coordinates, so we can then call invalidate(...). 2664 2665 Normally, we would just call contentToView[XY](...), which eventually 2666 calls Math.round(coordinate * mActualScale). However, for invalidates, 2667 we need to account for the slop that occurs with antialiasing. To 2668 address that, we are a little more liberal in the size of the rect that 2669 we invalidate. 2670 2671 This liberal calculation calls floor() for the top/left, and ceil() for 2672 the bottom/right coordinates. This catches the possible extra pixels of 2673 antialiasing that we might have missed with just round(). 2674 */ 2675 2676 // Called by JNI to invalidate the View, given rectangle coordinates in 2677 // content space 2678 private void viewInvalidate(int l, int t, int r, int b) { 2679 final float scale = mZoomManager.getScale(); 2680 final int dy = getTitleHeight(); 2681 invalidate((int)Math.floor(l * scale), 2682 (int)Math.floor(t * scale) + dy, 2683 (int)Math.ceil(r * scale), 2684 (int)Math.ceil(b * scale) + dy); 2685 } 2686 2687 // Called by JNI to invalidate the View after a delay, given rectangle 2688 // coordinates in content space 2689 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2690 final float scale = mZoomManager.getScale(); 2691 final int dy = getTitleHeight(); 2692 postInvalidateDelayed(delay, 2693 (int)Math.floor(l * scale), 2694 (int)Math.floor(t * scale) + dy, 2695 (int)Math.ceil(r * scale), 2696 (int)Math.ceil(b * scale) + dy); 2697 } 2698 2699 private void invalidateContentRect(Rect r) { 2700 viewInvalidate(r.left, r.top, r.right, r.bottom); 2701 } 2702 2703 // stop the scroll animation, and don't let a subsequent fling add 2704 // to the existing velocity 2705 private void abortAnimation() { 2706 mScroller.abortAnimation(); 2707 mLastVelocity = 0; 2708 } 2709 2710 /* call from webcoreview.draw(), so we're still executing in the UI thread 2711 */ 2712 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2713 2714 // premature data from webkit, ignore 2715 if ((w | h) == 0) { 2716 return; 2717 } 2718 2719 // don't abort a scroll animation if we didn't change anything 2720 if (mContentWidth != w || mContentHeight != h) { 2721 // record new dimensions 2722 mContentWidth = w; 2723 mContentHeight = h; 2724 // If history Picture is drawn, don't update scroll. They will be 2725 // updated when we get out of that mode. 2726 if (!mDrawHistory) { 2727 // repin our scroll, taking into account the new content size 2728 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2729 if (!mScroller.isFinished()) { 2730 // We are in the middle of a scroll. Repin the final scroll 2731 // position. 2732 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2733 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2734 } 2735 } 2736 } 2737 contentSizeChanged(updateLayout); 2738 } 2739 2740 // Used to avoid sending many visible rect messages. 2741 private Rect mLastVisibleRectSent; 2742 private Rect mLastGlobalRect; 2743 2744 Rect sendOurVisibleRect() { 2745 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2746 Rect rect = new Rect(); 2747 calcOurContentVisibleRect(rect); 2748 // Rect.equals() checks for null input. 2749 if (!rect.equals(mLastVisibleRectSent)) { 2750 if (!mBlockWebkitViewMessages) { 2751 Point pos = new Point(rect.left, rect.top); 2752 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2753 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2754 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2755 } 2756 mLastVisibleRectSent = rect; 2757 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2758 } 2759 Rect globalRect = new Rect(); 2760 if (getGlobalVisibleRect(globalRect) 2761 && !globalRect.equals(mLastGlobalRect)) { 2762 if (DebugFlags.WEB_VIEW) { 2763 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2764 + globalRect.top + ",r=" + globalRect.right + ",b=" 2765 + globalRect.bottom); 2766 } 2767 // TODO: the global offset is only used by windowRect() 2768 // in ChromeClientAndroid ; other clients such as touch 2769 // and mouse events could return view + screen relative points. 2770 if (!mBlockWebkitViewMessages) { 2771 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2772 } 2773 mLastGlobalRect = globalRect; 2774 } 2775 return rect; 2776 } 2777 2778 // Sets r to be the visible rectangle of our webview in view coordinates 2779 private void calcOurVisibleRect(Rect r) { 2780 Point p = new Point(); 2781 getGlobalVisibleRect(r, p); 2782 r.offset(-p.x, -p.y); 2783 } 2784 2785 // Sets r to be our visible rectangle in content coordinates 2786 private void calcOurContentVisibleRect(Rect r) { 2787 calcOurVisibleRect(r); 2788 r.left = viewToContentX(r.left); 2789 // viewToContentY will remove the total height of the title bar. Add 2790 // the visible height back in to account for the fact that if the title 2791 // bar is partially visible, the part of the visible rect which is 2792 // displaying our content is displaced by that amount. 2793 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2794 r.right = viewToContentX(r.right); 2795 r.bottom = viewToContentY(r.bottom); 2796 } 2797 2798 // Sets r to be our visible rectangle in content coordinates. We use this 2799 // method on the native side to compute the position of the fixed layers. 2800 // Uses floating coordinates (necessary to correctly place elements when 2801 // the scale factor is not 1) 2802 private void calcOurContentVisibleRectF(RectF r) { 2803 Rect ri = new Rect(0,0,0,0); 2804 calcOurVisibleRect(ri); 2805 r.left = viewToContentXf(ri.left); 2806 // viewToContentY will remove the total height of the title bar. Add 2807 // the visible height back in to account for the fact that if the title 2808 // bar is partially visible, the part of the visible rect which is 2809 // displaying our content is displaced by that amount. 2810 r.top = viewToContentYf(ri.top + getVisibleTitleHeightImpl()); 2811 r.right = viewToContentXf(ri.right); 2812 r.bottom = viewToContentYf(ri.bottom); 2813 } 2814 2815 static class ViewSizeData { 2816 int mWidth; 2817 int mHeight; 2818 float mHeightWidthRatio; 2819 int mActualViewHeight; 2820 int mTextWrapWidth; 2821 int mAnchorX; 2822 int mAnchorY; 2823 float mScale; 2824 boolean mIgnoreHeight; 2825 } 2826 2827 /** 2828 * Compute unzoomed width and height, and if they differ from the last 2829 * values we sent, send them to webkit (to be used as new viewport) 2830 * 2831 * @param force ensures that the message is sent to webkit even if the width 2832 * or height has not changed since the last message 2833 * 2834 * @return true if new values were sent 2835 */ 2836 boolean sendViewSizeZoom(boolean force) { 2837 if (mBlockWebkitViewMessages) return false; 2838 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2839 2840 int viewWidth = getViewWidth(); 2841 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2842 // This height could be fixed and be different from actual visible height. 2843 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2844 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2845 // Make the ratio more accurate than (newHeight / newWidth), since the 2846 // latter both are calculated and rounded. 2847 float heightWidthRatio = (float) viewHeight / viewWidth; 2848 /* 2849 * Because the native side may have already done a layout before the 2850 * View system was able to measure us, we have to send a height of 0 to 2851 * remove excess whitespace when we grow our width. This will trigger a 2852 * layout and a change in content size. This content size change will 2853 * mean that contentSizeChanged will either call this method directly or 2854 * indirectly from onSizeChanged. 2855 */ 2856 if (newWidth > mLastWidthSent && mWrapContent) { 2857 newHeight = 0; 2858 heightWidthRatio = 0; 2859 } 2860 // Actual visible content height. 2861 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2862 // Avoid sending another message if the dimensions have not changed. 2863 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2864 actualViewHeight != mLastActualHeightSent) { 2865 ViewSizeData data = new ViewSizeData(); 2866 data.mWidth = newWidth; 2867 data.mHeight = newHeight; 2868 data.mHeightWidthRatio = heightWidthRatio; 2869 data.mActualViewHeight = actualViewHeight; 2870 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2871 data.mScale = mZoomManager.getScale(); 2872 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2873 && !mHeightCanMeasure; 2874 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2875 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2876 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2877 mLastWidthSent = newWidth; 2878 mLastHeightSent = newHeight; 2879 mLastActualHeightSent = actualViewHeight; 2880 mZoomManager.clearDocumentAnchor(); 2881 return true; 2882 } 2883 return false; 2884 } 2885 2886 private int computeRealHorizontalScrollRange() { 2887 if (mDrawHistory) { 2888 return mHistoryWidth; 2889 } else { 2890 // to avoid rounding error caused unnecessary scrollbar, use floor 2891 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2892 } 2893 } 2894 2895 @Override 2896 protected int computeHorizontalScrollRange() { 2897 int range = computeRealHorizontalScrollRange(); 2898 2899 // Adjust reported range if overscrolled to compress the scroll bars 2900 final int scrollX = mScrollX; 2901 final int overscrollRight = computeMaxScrollX(); 2902 if (scrollX < 0) { 2903 range -= scrollX; 2904 } else if (scrollX > overscrollRight) { 2905 range += scrollX - overscrollRight; 2906 } 2907 2908 return range; 2909 } 2910 2911 @Override 2912 protected int computeHorizontalScrollOffset() { 2913 return Math.max(mScrollX, 0); 2914 } 2915 2916 private int computeRealVerticalScrollRange() { 2917 if (mDrawHistory) { 2918 return mHistoryHeight; 2919 } else { 2920 // to avoid rounding error caused unnecessary scrollbar, use floor 2921 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2922 } 2923 } 2924 2925 @Override 2926 protected int computeVerticalScrollRange() { 2927 int range = computeRealVerticalScrollRange(); 2928 2929 // Adjust reported range if overscrolled to compress the scroll bars 2930 final int scrollY = mScrollY; 2931 final int overscrollBottom = computeMaxScrollY(); 2932 if (scrollY < 0) { 2933 range -= scrollY; 2934 } else if (scrollY > overscrollBottom) { 2935 range += scrollY - overscrollBottom; 2936 } 2937 2938 return range; 2939 } 2940 2941 @Override 2942 protected int computeVerticalScrollOffset() { 2943 return Math.max(mScrollY - getTitleHeight(), 0); 2944 } 2945 2946 @Override 2947 protected int computeVerticalScrollExtent() { 2948 return getViewHeight(); 2949 } 2950 2951 /** @hide */ 2952 @Override 2953 protected void onDrawVerticalScrollBar(Canvas canvas, 2954 Drawable scrollBar, 2955 int l, int t, int r, int b) { 2956 if (mScrollY < 0) { 2957 t -= mScrollY; 2958 } 2959 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 2960 scrollBar.draw(canvas); 2961 } 2962 2963 @Override 2964 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2965 boolean clampedY) { 2966 // Special-case layer scrolling so that we do not trigger normal scroll 2967 // updating. 2968 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2969 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2970 mScrollingLayerRect.left = scrollX; 2971 mScrollingLayerRect.top = scrollY; 2972 invalidate(); 2973 return; 2974 } 2975 mInOverScrollMode = false; 2976 int maxX = computeMaxScrollX(); 2977 int maxY = computeMaxScrollY(); 2978 if (maxX == 0) { 2979 // do not over scroll x if the page just fits the screen 2980 scrollX = pinLocX(scrollX); 2981 } else if (scrollX < 0 || scrollX > maxX) { 2982 mInOverScrollMode = true; 2983 } 2984 if (scrollY < 0 || scrollY > maxY) { 2985 mInOverScrollMode = true; 2986 } 2987 2988 int oldX = mScrollX; 2989 int oldY = mScrollY; 2990 2991 super.scrollTo(scrollX, scrollY); 2992 2993 if (mOverScrollGlow != null) { 2994 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2995 } 2996 } 2997 2998 /** 2999 * Get the url for the current page. This is not always the same as the url 3000 * passed to WebViewClient.onPageStarted because although the load for 3001 * that url has begun, the current page may not have changed. 3002 * @return The url for the current page. 3003 */ 3004 public String getUrl() { 3005 checkThread(); 3006 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3007 return h != null ? h.getUrl() : null; 3008 } 3009 3010 /** 3011 * Get the original url for the current page. This is not always the same 3012 * as the url passed to WebViewClient.onPageStarted because although the 3013 * load for that url has begun, the current page may not have changed. 3014 * Also, there may have been redirects resulting in a different url to that 3015 * originally requested. 3016 * @return The url that was originally requested for the current page. 3017 */ 3018 public String getOriginalUrl() { 3019 checkThread(); 3020 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3021 return h != null ? h.getOriginalUrl() : null; 3022 } 3023 3024 /** 3025 * Get the title for the current page. This is the title of the current page 3026 * until WebViewClient.onReceivedTitle is called. 3027 * @return The title for the current page. 3028 */ 3029 public String getTitle() { 3030 checkThread(); 3031 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3032 return h != null ? h.getTitle() : null; 3033 } 3034 3035 /** 3036 * Get the favicon for the current page. This is the favicon of the current 3037 * page until WebViewClient.onReceivedIcon is called. 3038 * @return The favicon for the current page. 3039 */ 3040 public Bitmap getFavicon() { 3041 checkThread(); 3042 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3043 return h != null ? h.getFavicon() : null; 3044 } 3045 3046 /** 3047 * Get the touch icon url for the apple-touch-icon <link> element, or 3048 * a URL on this site's server pointing to the standard location of a 3049 * touch icon. 3050 * @hide 3051 */ 3052 public String getTouchIconUrl() { 3053 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3054 return h != null ? h.getTouchIconUrl() : null; 3055 } 3056 3057 /** 3058 * Get the progress for the current page. 3059 * @return The progress for the current page between 0 and 100. 3060 */ 3061 public int getProgress() { 3062 checkThread(); 3063 return mCallbackProxy.getProgress(); 3064 } 3065 3066 /** 3067 * @return the height of the HTML content. 3068 */ 3069 public int getContentHeight() { 3070 checkThread(); 3071 return mContentHeight; 3072 } 3073 3074 /** 3075 * @return the width of the HTML content. 3076 * @hide 3077 */ 3078 public int getContentWidth() { 3079 return mContentWidth; 3080 } 3081 3082 /** 3083 * @hide 3084 */ 3085 public int getPageBackgroundColor() { 3086 return nativeGetBackgroundColor(); 3087 } 3088 3089 /** 3090 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3091 * is a global requests, not restricted to just this webview. This can be 3092 * useful if the application has been paused. 3093 */ 3094 public void pauseTimers() { 3095 checkThread(); 3096 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3097 } 3098 3099 /** 3100 * Resume all layout, parsing, and JavaScript timers for all webviews. 3101 * This will resume dispatching all timers. 3102 */ 3103 public void resumeTimers() { 3104 checkThread(); 3105 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3106 } 3107 3108 /** 3109 * Call this to pause any extra processing associated with this WebView and 3110 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3111 * is taken offscreen, this could be called to reduce unnecessary CPU or 3112 * network traffic. When the WebView is again "active", call onResume(). 3113 * 3114 * Note that this differs from pauseTimers(), which affects all WebViews. 3115 */ 3116 public void onPause() { 3117 checkThread(); 3118 if (!mIsPaused) { 3119 mIsPaused = true; 3120 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3121 // We want to pause the current playing video when switching out 3122 // from the current WebView/tab. 3123 if (mHTML5VideoViewProxy != null) { 3124 mHTML5VideoViewProxy.pauseAndDispatch(); 3125 } 3126 } 3127 } 3128 3129 /** 3130 * Call this to resume a WebView after a previous call to onPause(). 3131 */ 3132 public void onResume() { 3133 checkThread(); 3134 if (mIsPaused) { 3135 mIsPaused = false; 3136 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3137 } 3138 } 3139 3140 /** 3141 * Returns true if the view is paused, meaning onPause() was called. Calling 3142 * onResume() sets the paused state back to false. 3143 * @hide 3144 */ 3145 public boolean isPaused() { 3146 return mIsPaused; 3147 } 3148 3149 /** 3150 * Call this to inform the view that memory is low so that it can 3151 * free any available memory. 3152 */ 3153 public void freeMemory() { 3154 checkThread(); 3155 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3156 } 3157 3158 /** 3159 * Clear the resource cache. Note that the cache is per-application, so 3160 * this will clear the cache for all WebViews used. 3161 * 3162 * @param includeDiskFiles If false, only the RAM cache is cleared. 3163 */ 3164 public void clearCache(boolean includeDiskFiles) { 3165 checkThread(); 3166 // Note: this really needs to be a static method as it clears cache for all 3167 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3168 // we can't make this static. 3169 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3170 includeDiskFiles ? 1 : 0, 0); 3171 } 3172 3173 /** 3174 * Make sure that clearing the form data removes the adapter from the 3175 * currently focused textfield if there is one. 3176 */ 3177 public void clearFormData() { 3178 checkThread(); 3179 if (inEditingMode()) { 3180 AutoCompleteAdapter adapter = null; 3181 mWebTextView.setAdapterCustom(adapter); 3182 } 3183 } 3184 3185 /** 3186 * Tell the WebView to clear its internal back/forward list. 3187 */ 3188 public void clearHistory() { 3189 checkThread(); 3190 mCallbackProxy.getBackForwardList().setClearPending(); 3191 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3192 } 3193 3194 /** 3195 * Clear the SSL preferences table stored in response to proceeding with SSL 3196 * certificate errors. 3197 */ 3198 public void clearSslPreferences() { 3199 checkThread(); 3200 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3201 } 3202 3203 /** 3204 * Return the WebBackForwardList for this WebView. This contains the 3205 * back/forward list for use in querying each item in the history stack. 3206 * This is a copy of the private WebBackForwardList so it contains only a 3207 * snapshot of the current state. Multiple calls to this method may return 3208 * different objects. The object returned from this method will not be 3209 * updated to reflect any new state. 3210 */ 3211 public WebBackForwardList copyBackForwardList() { 3212 checkThread(); 3213 return mCallbackProxy.getBackForwardList().clone(); 3214 } 3215 3216 /* 3217 * Highlight and scroll to the next occurance of String in findAll. 3218 * Wraps the page infinitely, and scrolls. Must be called after 3219 * calling findAll. 3220 * 3221 * @param forward Direction to search. 3222 */ 3223 public void findNext(boolean forward) { 3224 checkThread(); 3225 if (0 == mNativeClass) return; // client isn't initialized 3226 nativeFindNext(forward); 3227 } 3228 3229 /* 3230 * Find all instances of find on the page and highlight them. 3231 * @param find String to find. 3232 * @return int The number of occurances of the String "find" 3233 * that were found. 3234 */ 3235 public int findAll(String find) { 3236 checkThread(); 3237 if (0 == mNativeClass) return 0; // client isn't initialized 3238 int result = find != null ? nativeFindAll(find.toLowerCase(), 3239 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3240 invalidate(); 3241 mLastFind = find; 3242 return result; 3243 } 3244 3245 /** 3246 * Start an ActionMode for finding text in this WebView. Only works if this 3247 * WebView is attached to the view system. 3248 * @param text If non-null, will be the initial text to search for. 3249 * Otherwise, the last String searched for in this WebView will 3250 * be used to start. 3251 * @param showIme If true, show the IME, assuming the user will begin typing. 3252 * If false and text is non-null, perform a find all. 3253 * @return boolean True if the find dialog is shown, false otherwise. 3254 */ 3255 public boolean showFindDialog(String text, boolean showIme) { 3256 checkThread(); 3257 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3258 if (getParent() == null || startActionMode(callback) == null) { 3259 // Could not start the action mode, so end Find on page 3260 return false; 3261 } 3262 mFindCallback = callback; 3263 setFindIsUp(true); 3264 mFindCallback.setWebView(this); 3265 if (showIme) { 3266 mFindCallback.showSoftInput(); 3267 } else if (text != null) { 3268 mFindCallback.setText(text); 3269 mFindCallback.findAll(); 3270 return true; 3271 } 3272 if (text == null) { 3273 text = mLastFind; 3274 } 3275 if (text != null) { 3276 mFindCallback.setText(text); 3277 } 3278 return true; 3279 } 3280 3281 /** 3282 * Keep track of the find callback so that we can remove its titlebar if 3283 * necessary. 3284 */ 3285 private FindActionModeCallback mFindCallback; 3286 3287 /** 3288 * Toggle whether the find dialog is showing, for both native and Java. 3289 */ 3290 private void setFindIsUp(boolean isUp) { 3291 mFindIsUp = isUp; 3292 if (0 == mNativeClass) return; // client isn't initialized 3293 nativeSetFindIsUp(isUp); 3294 } 3295 3296 /** 3297 * Return the index of the currently highlighted match. 3298 */ 3299 int findIndex() { 3300 if (0 == mNativeClass) return -1; 3301 return nativeFindIndex(); 3302 } 3303 3304 // Used to know whether the find dialog is open. Affects whether 3305 // or not we draw the highlights for matches. 3306 private boolean mFindIsUp; 3307 3308 // Keep track of the last string sent, so we can search again when find is 3309 // reopened. 3310 private String mLastFind; 3311 3312 /** 3313 * Return the first substring consisting of the address of a physical 3314 * location. Currently, only addresses in the United States are detected, 3315 * and consist of: 3316 * - a house number 3317 * - a street name 3318 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3319 * - a city name 3320 * - a state or territory, either spelled out or two-letter abbr. 3321 * - an optional 5 digit or 9 digit zip code. 3322 * 3323 * All names must be correctly capitalized, and the zip code, if present, 3324 * must be valid for the state. The street type must be a standard USPS 3325 * spelling or abbreviation. The state or territory must also be spelled 3326 * or abbreviated using USPS standards. The house number may not exceed 3327 * five digits. 3328 * @param addr The string to search for addresses. 3329 * 3330 * @return the address, or if no address is found, return null. 3331 */ 3332 public static String findAddress(String addr) { 3333 checkThread(); 3334 return findAddress(addr, false); 3335 } 3336 3337 /** 3338 * @hide 3339 * Return the first substring consisting of the address of a physical 3340 * location. Currently, only addresses in the United States are detected, 3341 * and consist of: 3342 * - a house number 3343 * - a street name 3344 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3345 * - a city name 3346 * - a state or territory, either spelled out or two-letter abbr. 3347 * - an optional 5 digit or 9 digit zip code. 3348 * 3349 * Names are optionally capitalized, and the zip code, if present, 3350 * must be valid for the state. The street type must be a standard USPS 3351 * spelling or abbreviation. The state or territory must also be spelled 3352 * or abbreviated using USPS standards. The house number may not exceed 3353 * five digits. 3354 * @param addr The string to search for addresses. 3355 * @param caseInsensitive addr Set to true to make search ignore case. 3356 * 3357 * @return the address, or if no address is found, return null. 3358 */ 3359 public static String findAddress(String addr, boolean caseInsensitive) { 3360 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3361 } 3362 3363 /* 3364 * Clear the highlighting surrounding text matches created by findAll. 3365 */ 3366 public void clearMatches() { 3367 checkThread(); 3368 if (mNativeClass == 0) 3369 return; 3370 nativeSetFindIsEmpty(); 3371 invalidate(); 3372 } 3373 3374 /** 3375 * Called when the find ActionMode ends. 3376 */ 3377 void notifyFindDialogDismissed() { 3378 mFindCallback = null; 3379 if (mWebViewCore == null) { 3380 return; 3381 } 3382 clearMatches(); 3383 setFindIsUp(false); 3384 // Now that the dialog has been removed, ensure that we scroll to a 3385 // location that is not beyond the end of the page. 3386 pinScrollTo(mScrollX, mScrollY, false, 0); 3387 invalidate(); 3388 } 3389 3390 /** 3391 * Query the document to see if it contains any image references. The 3392 * message object will be dispatched with arg1 being set to 1 if images 3393 * were found and 0 if the document does not reference any images. 3394 * @param response The message that will be dispatched with the result. 3395 */ 3396 public void documentHasImages(Message response) { 3397 checkThread(); 3398 if (response == null) { 3399 return; 3400 } 3401 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3402 } 3403 3404 /** 3405 * Request the scroller to abort any ongoing animation 3406 * 3407 * @hide 3408 */ 3409 public void stopScroll() { 3410 mScroller.forceFinished(true); 3411 mLastVelocity = 0; 3412 } 3413 3414 @Override 3415 public void computeScroll() { 3416 if (mScroller.computeScrollOffset()) { 3417 int oldX = mScrollX; 3418 int oldY = mScrollY; 3419 int x = mScroller.getCurrX(); 3420 int y = mScroller.getCurrY(); 3421 invalidate(); // So we draw again 3422 3423 if (!mScroller.isFinished()) { 3424 int rangeX = computeMaxScrollX(); 3425 int rangeY = computeMaxScrollY(); 3426 int overflingDistance = mOverflingDistance; 3427 3428 // Use the layer's scroll data if needed. 3429 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3430 oldX = mScrollingLayerRect.left; 3431 oldY = mScrollingLayerRect.top; 3432 rangeX = mScrollingLayerRect.right; 3433 rangeY = mScrollingLayerRect.bottom; 3434 // No overscrolling for layers. 3435 overflingDistance = 0; 3436 } 3437 3438 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3439 rangeX, rangeY, 3440 overflingDistance, overflingDistance, false); 3441 3442 if (mOverScrollGlow != null) { 3443 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3444 } 3445 } else { 3446 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3447 mScrollX = x; 3448 mScrollY = y; 3449 } else { 3450 // Update the layer position instead of WebView. 3451 nativeScrollLayer(mScrollingLayer, x, y); 3452 mScrollingLayerRect.left = x; 3453 mScrollingLayerRect.top = y; 3454 } 3455 abortAnimation(); 3456 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3457 if (!mBlockWebkitViewMessages) { 3458 WebViewCore.resumePriority(); 3459 if (!mSelectingText) { 3460 WebViewCore.resumeUpdatePicture(mWebViewCore); 3461 } 3462 } 3463 if (oldX != mScrollX || oldY != mScrollY) { 3464 sendOurVisibleRect(); 3465 } 3466 } 3467 } else { 3468 super.computeScroll(); 3469 } 3470 } 3471 3472 private static int computeDuration(int dx, int dy) { 3473 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3474 int duration = distance * 1000 / STD_SPEED; 3475 return Math.min(duration, MAX_DURATION); 3476 } 3477 3478 // helper to pin the scrollBy parameters (already in view coordinates) 3479 // returns true if the scroll was changed 3480 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3481 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3482 } 3483 // helper to pin the scrollTo parameters (already in view coordinates) 3484 // returns true if the scroll was changed 3485 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3486 x = pinLocX(x); 3487 y = pinLocY(y); 3488 int dx = x - mScrollX; 3489 int dy = y - mScrollY; 3490 3491 if ((dx | dy) == 0) { 3492 return false; 3493 } 3494 abortAnimation(); 3495 if (animate) { 3496 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3497 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3498 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3499 awakenScrollBars(mScroller.getDuration()); 3500 invalidate(); 3501 } else { 3502 scrollTo(x, y); 3503 } 3504 return true; 3505 } 3506 3507 // Scale from content to view coordinates, and pin. 3508 // Also called by jni webview.cpp 3509 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3510 if (mDrawHistory) { 3511 // disallow WebView to change the scroll position as History Picture 3512 // is used in the view system. 3513 // TODO: as we switchOutDrawHistory when trackball or navigation 3514 // keys are hit, this should be safe. Right? 3515 return false; 3516 } 3517 cx = contentToViewDimension(cx); 3518 cy = contentToViewDimension(cy); 3519 if (mHeightCanMeasure) { 3520 // move our visible rect according to scroll request 3521 if (cy != 0) { 3522 Rect tempRect = new Rect(); 3523 calcOurVisibleRect(tempRect); 3524 tempRect.offset(cx, cy); 3525 requestRectangleOnScreen(tempRect); 3526 } 3527 // FIXME: We scroll horizontally no matter what because currently 3528 // ScrollView and ListView will not scroll horizontally. 3529 // FIXME: Why do we only scroll horizontally if there is no 3530 // vertical scroll? 3531// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3532 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3533 } else { 3534 return pinScrollBy(cx, cy, animate, 0); 3535 } 3536 } 3537 3538 /** 3539 * Called by CallbackProxy when the page starts loading. 3540 * @param url The URL of the page which has started loading. 3541 */ 3542 /* package */ void onPageStarted(String url) { 3543 // every time we start a new page, we want to reset the 3544 // WebView certificate: if the new site is secure, we 3545 // will reload it and get a new certificate set; 3546 // if the new site is not secure, the certificate must be 3547 // null, and that will be the case 3548 setCertificate(null); 3549 3550 // reset the flag since we set to true in if need after 3551 // loading is see onPageFinished(Url) 3552 mAccessibilityScriptInjected = false; 3553 } 3554 3555 /** 3556 * Called by CallbackProxy when the page finishes loading. 3557 * @param url The URL of the page which has finished loading. 3558 */ 3559 /* package */ void onPageFinished(String url) { 3560 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3561 // If the user is now on a different page, or has scrolled the page 3562 // past the point where the title bar is offscreen, ignore the 3563 // scroll request. 3564 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3565 && mScrollX == 0 && mScrollY == 0) { 3566 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3567 SLIDE_TITLE_DURATION); 3568 } 3569 mPageThatNeedsToSlideTitleBarOffScreen = null; 3570 } 3571 mZoomManager.onPageFinished(url); 3572 injectAccessibilityForUrl(url); 3573 } 3574 3575 /** 3576 * This method injects accessibility in the loaded document if accessibility 3577 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3578 * If no URL specific script is found or JavaScript is disabled we fallback to 3579 * the default {@link AccessibilityInjector} implementation. 3580 * </p> 3581 * If the URL has the "axs" paramter set to 1 it has already done the 3582 * script injection so we do nothing. If the parameter is set to 0 3583 * the URL opts out accessibility script injection so we fall back to 3584 * the default {@link AccessibilityInjector}. 3585 * </p> 3586 * Note: If the user has not opted-in the accessibility script injection no scripts 3587 * are injected rather the default {@link AccessibilityInjector} implementation 3588 * is used. 3589 * 3590 * @param url The URL loaded by this {@link WebView}. 3591 */ 3592 private void injectAccessibilityForUrl(String url) { 3593 if (mWebViewCore == null) { 3594 return; 3595 } 3596 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3597 3598 if (!accessibilityManager.isEnabled()) { 3599 // it is possible that accessibility was turned off between reloads 3600 ensureAccessibilityScriptInjectorInstance(false); 3601 return; 3602 } 3603 3604 if (!getSettings().getJavaScriptEnabled()) { 3605 // no JS so we fallback to the basic buil-in support 3606 ensureAccessibilityScriptInjectorInstance(true); 3607 return; 3608 } 3609 3610 // check the URL "axs" parameter to choose appropriate action 3611 int axsParameterValue = getAxsUrlParameterValue(url); 3612 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3613 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3614 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3615 if (onDeviceScriptInjectionEnabled) { 3616 ensureAccessibilityScriptInjectorInstance(false); 3617 // neither script injected nor script injection opted out => we inject 3618 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3619 // TODO: Set this flag after successfull script injection. Maybe upon injection 3620 // the chooser should update the meta tag and we check it to declare success 3621 mAccessibilityScriptInjected = true; 3622 } else { 3623 // injection disabled so we fallback to the basic built-in support 3624 ensureAccessibilityScriptInjectorInstance(true); 3625 } 3626 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3627 // injection opted out so we fallback to the basic buil-in support 3628 ensureAccessibilityScriptInjectorInstance(true); 3629 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3630 ensureAccessibilityScriptInjectorInstance(false); 3631 // the URL provides accessibility but we still need to add our generic script 3632 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3633 } else { 3634 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3635 } 3636 } 3637 3638 /** 3639 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3640 * 3641 * @param present True to ensure an insance, false to ensure no instance. 3642 */ 3643 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3644 if (present) { 3645 if (mAccessibilityInjector == null) { 3646 mAccessibilityInjector = new AccessibilityInjector(this); 3647 } 3648 } else { 3649 mAccessibilityInjector = null; 3650 } 3651 } 3652 3653 /** 3654 * Gets the "axs" URL parameter value. 3655 * 3656 * @param url A url to fetch the paramter from. 3657 * @return The parameter value if such, -1 otherwise. 3658 */ 3659 private int getAxsUrlParameterValue(String url) { 3660 if (mMatchAxsUrlParameterPattern == null) { 3661 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3662 } 3663 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3664 if (matcher.find()) { 3665 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3666 return Integer.parseInt(keyValuePair.split("=")[1]); 3667 } 3668 return -1; 3669 } 3670 3671 /** 3672 * The URL of a page that sent a message to scroll the title bar off screen. 3673 * 3674 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3675 * title bar off the screen. Sometimes, the scroll position is set before 3676 * the page finishes loading. Rather than scrolling while the page is still 3677 * loading, keep track of the URL and new scroll position so we can perform 3678 * the scroll once the page finishes loading. 3679 */ 3680 private String mPageThatNeedsToSlideTitleBarOffScreen; 3681 3682 /** 3683 * The destination Y scroll position to be used when the page finishes 3684 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3685 */ 3686 private int mYDistanceToSlideTitleOffScreen; 3687 3688 // scale from content to view coordinates, and pin 3689 // return true if pin caused the final x/y different than the request cx/cy, 3690 // and a future scroll may reach the request cx/cy after our size has 3691 // changed 3692 // return false if the view scroll to the exact position as it is requested, 3693 // where negative numbers are taken to mean 0 3694 private boolean setContentScrollTo(int cx, int cy) { 3695 if (mDrawHistory) { 3696 // disallow WebView to change the scroll position as History Picture 3697 // is used in the view system. 3698 // One known case where this is called is that WebCore tries to 3699 // restore the scroll position. As history Picture already uses the 3700 // saved scroll position, it is ok to skip this. 3701 return false; 3702 } 3703 int vx; 3704 int vy; 3705 if ((cx | cy) == 0) { 3706 // If the page is being scrolled to (0,0), do not add in the title 3707 // bar's height, and simply scroll to (0,0). (The only other work 3708 // in contentToView_ is to multiply, so this would not change 0.) 3709 vx = 0; 3710 vy = 0; 3711 } else { 3712 vx = contentToViewX(cx); 3713 vy = contentToViewY(cy); 3714 } 3715// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3716// vx + " " + vy + "]"); 3717 // Some mobile sites attempt to scroll the title bar off the page by 3718 // scrolling to (0,1). If we are at the top left corner of the 3719 // page, assume this is an attempt to scroll off the title bar, and 3720 // animate the title bar off screen slowly enough that the user can see 3721 // it. 3722 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3723 && mTitleBar != null) { 3724 // FIXME: 100 should be defined somewhere as our max progress. 3725 if (getProgress() < 100) { 3726 // Wait to scroll the title bar off screen until the page has 3727 // finished loading. Keep track of the URL and the destination 3728 // Y position 3729 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3730 mYDistanceToSlideTitleOffScreen = vy; 3731 } else { 3732 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3733 } 3734 // Since we are animating, we have not yet reached the desired 3735 // scroll position. Do not return true to request another attempt 3736 return false; 3737 } 3738 pinScrollTo(vx, vy, false, 0); 3739 // If the request was to scroll to a negative coordinate, treat it as if 3740 // it was a request to scroll to 0 3741 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3742 return true; 3743 } else { 3744 return false; 3745 } 3746 } 3747 3748 // scale from content to view coordinates, and pin 3749 private void spawnContentScrollTo(int cx, int cy) { 3750 if (mDrawHistory) { 3751 // disallow WebView to change the scroll position as History Picture 3752 // is used in the view system. 3753 return; 3754 } 3755 int vx = contentToViewX(cx); 3756 int vy = contentToViewY(cy); 3757 pinScrollTo(vx, vy, true, 0); 3758 } 3759 3760 /** 3761 * These are from webkit, and are in content coordinate system (unzoomed) 3762 */ 3763 private void contentSizeChanged(boolean updateLayout) { 3764 // suppress 0,0 since we usually see real dimensions soon after 3765 // this avoids drawing the prev content in a funny place. If we find a 3766 // way to consolidate these notifications, this check may become 3767 // obsolete 3768 if ((mContentWidth | mContentHeight) == 0) { 3769 return; 3770 } 3771 3772 if (mHeightCanMeasure) { 3773 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3774 || updateLayout) { 3775 requestLayout(); 3776 } 3777 } else if (mWidthCanMeasure) { 3778 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3779 || updateLayout) { 3780 requestLayout(); 3781 } 3782 } else { 3783 // If we don't request a layout, try to send our view size to the 3784 // native side to ensure that WebCore has the correct dimensions. 3785 sendViewSizeZoom(false); 3786 } 3787 } 3788 3789 /** 3790 * Set the WebViewClient that will receive various notifications and 3791 * requests. This will replace the current handler. 3792 * @param client An implementation of WebViewClient. 3793 */ 3794 public void setWebViewClient(WebViewClient client) { 3795 checkThread(); 3796 mCallbackProxy.setWebViewClient(client); 3797 } 3798 3799 /** 3800 * Gets the WebViewClient 3801 * @return the current WebViewClient instance. 3802 * 3803 *@hide pending API council approval. 3804 */ 3805 public WebViewClient getWebViewClient() { 3806 return mCallbackProxy.getWebViewClient(); 3807 } 3808 3809 /** 3810 * Register the interface to be used when content can not be handled by 3811 * the rendering engine, and should be downloaded instead. This will replace 3812 * the current handler. 3813 * @param listener An implementation of DownloadListener. 3814 */ 3815 public void setDownloadListener(DownloadListener listener) { 3816 checkThread(); 3817 mCallbackProxy.setDownloadListener(listener); 3818 } 3819 3820 /** 3821 * Set the chrome handler. This is an implementation of WebChromeClient for 3822 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3823 * This will replace the current handler. 3824 * @param client An implementation of WebChromeClient. 3825 */ 3826 public void setWebChromeClient(WebChromeClient client) { 3827 checkThread(); 3828 mCallbackProxy.setWebChromeClient(client); 3829 } 3830 3831 /** 3832 * Gets the chrome handler. 3833 * @return the current WebChromeClient instance. 3834 * 3835 * @hide API council approval. 3836 */ 3837 public WebChromeClient getWebChromeClient() { 3838 return mCallbackProxy.getWebChromeClient(); 3839 } 3840 3841 /** 3842 * Set the back/forward list client. This is an implementation of 3843 * WebBackForwardListClient for handling new items and changes in the 3844 * history index. 3845 * @param client An implementation of WebBackForwardListClient. 3846 * {@hide} 3847 */ 3848 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3849 mCallbackProxy.setWebBackForwardListClient(client); 3850 } 3851 3852 /** 3853 * Gets the WebBackForwardListClient. 3854 * {@hide} 3855 */ 3856 public WebBackForwardListClient getWebBackForwardListClient() { 3857 return mCallbackProxy.getWebBackForwardListClient(); 3858 } 3859 3860 /** 3861 * Set the Picture listener. This is an interface used to receive 3862 * notifications of a new Picture. 3863 * @param listener An implementation of WebView.PictureListener. 3864 * @deprecated This method is now obsolete. 3865 */ 3866 @Deprecated 3867 public void setPictureListener(PictureListener listener) { 3868 checkThread(); 3869 mPictureListener = listener; 3870 } 3871 3872 /** 3873 * {@hide} 3874 */ 3875 /* FIXME: Debug only! Remove for SDK! */ 3876 public void externalRepresentation(Message callback) { 3877 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3878 } 3879 3880 /** 3881 * {@hide} 3882 */ 3883 /* FIXME: Debug only! Remove for SDK! */ 3884 public void documentAsText(Message callback) { 3885 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3886 } 3887 3888 /** 3889 * Use this function to bind an object to JavaScript so that the 3890 * methods can be accessed from JavaScript. 3891 * <p><strong>IMPORTANT:</strong> 3892 * <ul> 3893 * <li> Using addJavascriptInterface() allows JavaScript to control your 3894 * application. This can be a very useful feature or a dangerous security 3895 * issue. When the HTML in the WebView is untrustworthy (for example, part 3896 * or all of the HTML is provided by some person or process), then an 3897 * attacker could inject HTML that will execute your code and possibly any 3898 * code of the attacker's choosing.<br> 3899 * Do not use addJavascriptInterface() unless all of the HTML in this 3900 * WebView was written by you.</li> 3901 * <li> The Java object that is bound runs in another thread and not in 3902 * the thread that it was constructed in.</li> 3903 * </ul></p> 3904 * @param obj The class instance to bind to JavaScript, null instances are 3905 * ignored. 3906 * @param interfaceName The name to used to expose the instance in 3907 * JavaScript. 3908 */ 3909 public void addJavascriptInterface(Object obj, String interfaceName) { 3910 checkThread(); 3911 if (obj == null) { 3912 return; 3913 } 3914 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3915 arg.mObject = obj; 3916 arg.mInterfaceName = interfaceName; 3917 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3918 } 3919 3920 /** 3921 * Removes a previously added JavaScript interface with the given name. 3922 * @param interfaceName The name of the interface to remove. 3923 */ 3924 public void removeJavascriptInterface(String interfaceName) { 3925 checkThread(); 3926 if (mWebViewCore != null) { 3927 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3928 arg.mInterfaceName = interfaceName; 3929 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3930 } 3931 } 3932 3933 /** 3934 * Return the WebSettings object used to control the settings for this 3935 * WebView. 3936 * @return A WebSettings object that can be used to control this WebView's 3937 * settings. 3938 */ 3939 public WebSettings getSettings() { 3940 checkThread(); 3941 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3942 } 3943 3944 /** 3945 * Return the list of currently loaded plugins. 3946 * @return The list of currently loaded plugins. 3947 * 3948 * @hide 3949 * @deprecated This was used for Gears, which has been deprecated. 3950 */ 3951 @Deprecated 3952 public static synchronized PluginList getPluginList() { 3953 checkThread(); 3954 return new PluginList(); 3955 } 3956 3957 /** 3958 * @hide 3959 * @deprecated This was used for Gears, which has been deprecated. 3960 */ 3961 @Deprecated 3962 public void refreshPlugins(boolean reloadOpenPages) { 3963 checkThread(); 3964 } 3965 3966 //------------------------------------------------------------------------- 3967 // Override View methods 3968 //------------------------------------------------------------------------- 3969 3970 @Override 3971 protected void finalize() throws Throwable { 3972 try { 3973 destroyImpl(); 3974 } finally { 3975 super.finalize(); 3976 } 3977 } 3978 3979 @Override 3980 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3981 if (child == mTitleBar) { 3982 // When drawing the title bar, move it horizontally to always show 3983 // at the top of the WebView. 3984 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3985 int newTop = 0; 3986 if (mTitleGravity == Gravity.NO_GRAVITY) { 3987 newTop = Math.min(0, mScrollY); 3988 } else if (mTitleGravity == Gravity.TOP) { 3989 newTop = mScrollY; 3990 } 3991 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3992 mTitleBar.setTop(newTop); 3993 } 3994 return super.drawChild(canvas, child, drawingTime); 3995 } 3996 3997 private void drawContent(Canvas canvas, boolean drawRings) { 3998 // Update the buttons in the picture, so when we draw the picture 3999 // to the screen, they are in the correct state. 4000 // Tell the native side if user is a) touching the screen, 4001 // b) pressing the trackball down, or c) pressing the enter key 4002 // If the cursor is on a button, we need to draw it in the pressed 4003 // state. 4004 // If mNativeClass is 0, we should not reach here, so we do not 4005 // need to check it again. 4006 nativeRecordButtons(hasFocus() && hasWindowFocus(), 4007 mTouchMode == TOUCH_SHORTPRESS_START_MODE 4008 || mTrackballDown || mGotCenterDown, false); 4009 drawCoreAndCursorRing(canvas, mBackgroundColor, 4010 mDrawCursorRing && drawRings); 4011 } 4012 4013 /** 4014 * Draw the background when beyond bounds 4015 * @param canvas Canvas to draw into 4016 */ 4017 private void drawOverScrollBackground(Canvas canvas) { 4018 if (mOverScrollBackground == null) { 4019 mOverScrollBackground = new Paint(); 4020 Bitmap bm = BitmapFactory.decodeResource( 4021 mContext.getResources(), 4022 com.android.internal.R.drawable.status_bar_background); 4023 mOverScrollBackground.setShader(new BitmapShader(bm, 4024 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4025 mOverScrollBorder = new Paint(); 4026 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4027 mOverScrollBorder.setStrokeWidth(0); 4028 mOverScrollBorder.setColor(0xffbbbbbb); 4029 } 4030 4031 int top = 0; 4032 int right = computeRealHorizontalScrollRange(); 4033 int bottom = top + computeRealVerticalScrollRange(); 4034 // first draw the background and anchor to the top of the view 4035 canvas.save(); 4036 canvas.translate(mScrollX, mScrollY); 4037 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4038 - mScrollY, Region.Op.DIFFERENCE); 4039 canvas.drawPaint(mOverScrollBackground); 4040 canvas.restore(); 4041 // then draw the border 4042 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4043 // next clip the region for the content 4044 canvas.clipRect(0, top, right, bottom); 4045 } 4046 4047 @Override 4048 protected void onDraw(Canvas canvas) { 4049 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 4050 if (mNativeClass == 0) { 4051 return; 4052 } 4053 4054 // if both mContentWidth and mContentHeight are 0, it means there is no 4055 // valid Picture passed to WebView yet. This can happen when WebView 4056 // just starts. Draw the background and return. 4057 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4058 canvas.drawColor(mBackgroundColor); 4059 return; 4060 } 4061 4062 if (canvas.isHardwareAccelerated()) { 4063 mZoomManager.setHardwareAccelerated(); 4064 } 4065 4066 int saveCount = canvas.save(); 4067 if (mInOverScrollMode && !getSettings() 4068 .getUseWebViewBackgroundForOverscrollBackground()) { 4069 drawOverScrollBackground(canvas); 4070 } 4071 if (mTitleBar != null) { 4072 canvas.translate(0, getTitleHeight()); 4073 } 4074 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4075 && (mTouchMode == TOUCH_INIT_MODE 4076 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4077 || mTouchMode == TOUCH_SHORTPRESS_MODE); 4078 boolean drawNativeRings = !drawJavaRings; 4079 if (USE_WEBKIT_RINGS) { 4080 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4081 } 4082 drawContent(canvas, drawNativeRings); 4083 canvas.restoreToCount(saveCount); 4084 4085 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4086 invalidate(); 4087 } 4088 mWebViewCore.signalRepaintDone(); 4089 4090 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4091 invalidate(); 4092 } 4093 4094 // paint the highlight in the end 4095 if (drawJavaRings) { 4096 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4097 if (delay < ViewConfiguration.getTapTimeout()) { 4098 Rect r = mTouchHighlightRegion.getBounds(); 4099 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4100 } else { 4101 if (mTouchHightlightPaint == null) { 4102 mTouchHightlightPaint = new Paint(); 4103 mTouchHightlightPaint.setColor(mHightlightColor); 4104 } 4105 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4106 Rect r = new Rect(); 4107 while (iter.next(r)) { 4108 canvas.drawRect(r, mTouchHightlightPaint); 4109 } 4110 } 4111 } 4112 if (DEBUG_TOUCH_HIGHLIGHT) { 4113 if (getSettings().getNavDump()) { 4114 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4115 if (mTouchCrossHairColor == null) { 4116 mTouchCrossHairColor = new Paint(); 4117 mTouchCrossHairColor.setColor(Color.RED); 4118 } 4119 canvas.drawLine(mTouchHighlightX - mNavSlop, 4120 mTouchHighlightY - mNavSlop, mTouchHighlightX 4121 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4122 + 1, mTouchCrossHairColor); 4123 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4124 mTouchHighlightY - mNavSlop, mTouchHighlightX 4125 - mNavSlop, 4126 mTouchHighlightY + mNavSlop + 1, 4127 mTouchCrossHairColor); 4128 } 4129 } 4130 } 4131 } 4132 4133 private void removeTouchHighlight() { 4134 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4135 mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS); 4136 setTouchHighlightRects(null); 4137 } 4138 4139 @Override 4140 public void setLayoutParams(ViewGroup.LayoutParams params) { 4141 if (params.height == LayoutParams.WRAP_CONTENT) { 4142 mWrapContent = true; 4143 } 4144 super.setLayoutParams(params); 4145 } 4146 4147 @Override 4148 public boolean performLongClick() { 4149 // performLongClick() is the result of a delayed message. If we switch 4150 // to windows overview, the WebView will be temporarily removed from the 4151 // view system. In that case, do nothing. 4152 if (getParent() == null) return false; 4153 4154 // A multi-finger gesture can look like a long press; make sure we don't take 4155 // long press actions if we're scaling. 4156 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4157 if (detector != null && detector.isInProgress()) { 4158 return false; 4159 } 4160 4161 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4162 // Send the click so that the textfield is in focus 4163 centerKeyPressOnTextField(); 4164 rebuildWebTextView(); 4165 } else { 4166 clearTextEntry(); 4167 } 4168 if (inEditingMode()) { 4169 // Since we just called rebuildWebTextView, the layout is not set 4170 // properly. Update it so it can correctly find the word to select. 4171 mWebTextView.ensureLayout(); 4172 // Provide a touch down event to WebTextView, which will allow it 4173 // to store the location to use in performLongClick. 4174 AbsoluteLayout.LayoutParams params 4175 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4176 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4177 mLastTouchTime, MotionEvent.ACTION_DOWN, 4178 mLastTouchX - params.x + mScrollX, 4179 mLastTouchY - params.y + mScrollY, 0); 4180 mWebTextView.dispatchTouchEvent(fake); 4181 return mWebTextView.performLongClick(); 4182 } 4183 if (mSelectingText) return false; // long click does nothing on selection 4184 /* if long click brings up a context menu, the super function 4185 * returns true and we're done. Otherwise, nothing happened when 4186 * the user clicked. */ 4187 if (super.performLongClick()) { 4188 return true; 4189 } 4190 /* In the case where the application hasn't already handled the long 4191 * click action, look for a word under the click. If one is found, 4192 * animate the text selection into view. 4193 * FIXME: no animation code yet */ 4194 return selectText(); 4195 } 4196 4197 /** 4198 * Select the word at the last click point. 4199 * 4200 * @hide pending API council approval 4201 */ 4202 public boolean selectText() { 4203 int x = viewToContentX(mLastTouchX + mScrollX); 4204 int y = viewToContentY(mLastTouchY + mScrollY); 4205 return selectText(x, y); 4206 } 4207 4208 /** 4209 * Select the word at the indicated content coordinates. 4210 */ 4211 boolean selectText(int x, int y) { 4212 if (!setUpSelect(true, x, y)) { 4213 return false; 4214 } 4215 nativeSetExtendSelection(); 4216 mDrawSelectionPointer = false; 4217 mSelectionStarted = true; 4218 mTouchMode = TOUCH_DRAG_MODE; 4219 return true; 4220 } 4221 4222 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4223 4224 @Override 4225 protected void onConfigurationChanged(Configuration newConfig) { 4226 if (mSelectingText && mOrientation != newConfig.orientation) { 4227 selectionDone(); 4228 } 4229 mOrientation = newConfig.orientation; 4230 } 4231 4232 /** 4233 * Keep track of the Callback so we can end its ActionMode or remove its 4234 * titlebar. 4235 */ 4236 private SelectActionModeCallback mSelectCallback; 4237 4238 // These values are possible options for didUpdateWebTextViewDimensions. 4239 private static final int FULLY_ON_SCREEN = 0; 4240 private static final int INTERSECTS_SCREEN = 1; 4241 private static final int ANYWHERE = 2; 4242 4243 /** 4244 * Check to see if the focused textfield/textarea is still on screen. If it 4245 * is, update the the dimensions and location of WebTextView. Otherwise, 4246 * remove the WebTextView. Should be called when the zoom level changes. 4247 * @param intersection How to determine whether the textfield/textarea is 4248 * still on screen. 4249 * @return boolean True if the textfield/textarea is still on screen and the 4250 * dimensions/location of WebTextView have been updated. 4251 */ 4252 private boolean didUpdateWebTextViewDimensions(int intersection) { 4253 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4254 Rect vBox = contentToViewRect(contentBounds); 4255 Rect visibleRect = new Rect(); 4256 calcOurVisibleRect(visibleRect); 4257 // If the textfield is on screen, place the WebTextView in 4258 // its new place, accounting for our new scroll/zoom values, 4259 // and adjust its textsize. 4260 boolean onScreen; 4261 switch (intersection) { 4262 case FULLY_ON_SCREEN: 4263 onScreen = visibleRect.contains(vBox); 4264 break; 4265 case INTERSECTS_SCREEN: 4266 onScreen = Rect.intersects(visibleRect, vBox); 4267 break; 4268 case ANYWHERE: 4269 onScreen = true; 4270 break; 4271 default: 4272 throw new AssertionError( 4273 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4274 } 4275 if (onScreen) { 4276 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4277 vBox.height()); 4278 mWebTextView.updateTextSize(); 4279 updateWebTextViewPadding(); 4280 return true; 4281 } else { 4282 // The textfield is now off screen. The user probably 4283 // was not zooming to see the textfield better. Remove 4284 // the WebTextView. If the user types a key, and the 4285 // textfield is still in focus, we will reconstruct 4286 // the WebTextView and scroll it back on screen. 4287 mWebTextView.remove(); 4288 return false; 4289 } 4290 } 4291 4292 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4293 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4294 if (mNativeClass == 0) 4295 return; 4296 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4297 isPictureAfterFirstLayout, registerPageSwapCallback); 4298 if (mHTML5VideoViewProxy != null) { 4299 mHTML5VideoViewProxy.setBaseLayer(layer); 4300 } 4301 } 4302 4303 int getBaseLayer() { 4304 return nativeGetBaseLayer(); 4305 } 4306 4307 private void onZoomAnimationStart() { 4308 // If it is in password mode, turn it off so it does not draw misplaced. 4309 if (inEditingMode()) { 4310 mWebTextView.setVisibility(INVISIBLE); 4311 } 4312 } 4313 4314 private void onZoomAnimationEnd() { 4315 // adjust the edit text view if needed 4316 if (inEditingMode() 4317 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4318 // If it is a password field, start drawing the WebTextView once 4319 // again. 4320 mWebTextView.setVisibility(VISIBLE); 4321 } 4322 } 4323 4324 void onFixedLengthZoomAnimationStart() { 4325 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4326 onZoomAnimationStart(); 4327 } 4328 4329 void onFixedLengthZoomAnimationEnd() { 4330 if (!mBlockWebkitViewMessages && !mSelectingText) { 4331 WebViewCore.resumeUpdatePicture(mWebViewCore); 4332 } 4333 onZoomAnimationEnd(); 4334 } 4335 4336 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4337 Paint.DITHER_FLAG | 4338 Paint.SUBPIXEL_TEXT_FLAG; 4339 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4340 Paint.DITHER_FLAG; 4341 4342 private final DrawFilter mZoomFilter = 4343 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4344 // If we need to trade better quality for speed, set mScrollFilter to null 4345 private final DrawFilter mScrollFilter = 4346 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4347 4348 private void drawCoreAndCursorRing(Canvas canvas, int color, 4349 boolean drawCursorRing) { 4350 if (mDrawHistory) { 4351 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4352 canvas.drawPicture(mHistoryPicture); 4353 return; 4354 } 4355 if (mNativeClass == 0) return; 4356 4357 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4358 boolean animateScroll = ((!mScroller.isFinished() 4359 || mVelocityTracker != null) 4360 && (mTouchMode != TOUCH_DRAG_MODE || 4361 mHeldMotionless != MOTIONLESS_TRUE)) 4362 || mDeferTouchMode == TOUCH_DRAG_MODE; 4363 if (mTouchMode == TOUCH_DRAG_MODE) { 4364 if (mHeldMotionless == MOTIONLESS_PENDING) { 4365 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4366 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4367 mHeldMotionless = MOTIONLESS_FALSE; 4368 } 4369 if (mHeldMotionless == MOTIONLESS_FALSE) { 4370 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4371 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4372 mHeldMotionless = MOTIONLESS_PENDING; 4373 } 4374 } 4375 if (animateZoom) { 4376 mZoomManager.animateZoom(canvas); 4377 } else if (!canvas.isHardwareAccelerated()) { 4378 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4379 } 4380 4381 boolean UIAnimationsRunning = false; 4382 // Currently for each draw we compute the animation values; 4383 // We may in the future decide to do that independently. 4384 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4385 UIAnimationsRunning = true; 4386 // If we have unfinished (or unstarted) animations, 4387 // we ask for a repaint. We only need to do this in software 4388 // rendering (with hardware rendering we already have a different 4389 // method of requesting a repaint) 4390 if (!canvas.isHardwareAccelerated()) 4391 invalidate(); 4392 } 4393 4394 // decide which adornments to draw 4395 int extras = DRAW_EXTRAS_NONE; 4396 if (mFindIsUp) { 4397 extras = DRAW_EXTRAS_FIND; 4398 } else if (mSelectingText) { 4399 extras = DRAW_EXTRAS_SELECTION; 4400 nativeSetSelectionPointer(mDrawSelectionPointer, 4401 mZoomManager.getInvScale(), 4402 mSelectX, mSelectY - getTitleHeight()); 4403 } else if (drawCursorRing) { 4404 extras = DRAW_EXTRAS_CURSOR_RING; 4405 } 4406 if (DebugFlags.WEB_VIEW) { 4407 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4408 + " mSelectingText=" + mSelectingText 4409 + " nativePageShouldHandleShiftAndArrows()=" 4410 + nativePageShouldHandleShiftAndArrows() 4411 + " animateZoom=" + animateZoom 4412 + " extras=" + extras); 4413 } 4414 4415 if (canvas.isHardwareAccelerated()) { 4416 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4417 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4418 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4419 4420 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4421 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4422 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4423 } 4424 4425 } else { 4426 DrawFilter df = null; 4427 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4428 df = mZoomFilter; 4429 } else if (animateScroll) { 4430 df = mScrollFilter; 4431 } 4432 canvas.setDrawFilter(df); 4433 // XXX: Revisit splitting content. Right now it causes a 4434 // synchronization problem with layers. 4435 int content = nativeDraw(canvas, color, extras, false); 4436 canvas.setDrawFilter(null); 4437 if (!mBlockWebkitViewMessages && content != 0) { 4438 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4439 } 4440 } 4441 4442 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4443 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4444 mTouchMode = TOUCH_SHORTPRESS_MODE; 4445 } 4446 } 4447 if (mFocusSizeChanged) { 4448 mFocusSizeChanged = false; 4449 // If we are zooming, this will get handled above, when the zoom 4450 // finishes. We also do not need to do this unless the WebTextView 4451 // is showing. With hardware acceleration, the pageSwapCallback() 4452 // updates the WebTextView position in sync with page swapping 4453 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4454 didUpdateWebTextViewDimensions(ANYWHERE); 4455 } 4456 } 4457 } 4458 4459 // draw history 4460 private boolean mDrawHistory = false; 4461 private Picture mHistoryPicture = null; 4462 private int mHistoryWidth = 0; 4463 private int mHistoryHeight = 0; 4464 4465 // Only check the flag, can be called from WebCore thread 4466 boolean drawHistory() { 4467 return mDrawHistory; 4468 } 4469 4470 int getHistoryPictureWidth() { 4471 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4472 } 4473 4474 // Should only be called in UI thread 4475 void switchOutDrawHistory() { 4476 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4477 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4478 mDrawHistory = false; 4479 mHistoryPicture = null; 4480 invalidate(); 4481 int oldScrollX = mScrollX; 4482 int oldScrollY = mScrollY; 4483 mScrollX = pinLocX(mScrollX); 4484 mScrollY = pinLocY(mScrollY); 4485 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4486 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4487 } else { 4488 sendOurVisibleRect(); 4489 } 4490 } 4491 } 4492 4493 WebViewCore.CursorData cursorData() { 4494 WebViewCore.CursorData result = cursorDataNoPosition(); 4495 Point position = nativeCursorPosition(); 4496 result.mX = position.x; 4497 result.mY = position.y; 4498 return result; 4499 } 4500 4501 WebViewCore.CursorData cursorDataNoPosition() { 4502 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4503 result.mMoveGeneration = nativeMoveGeneration(); 4504 result.mFrame = nativeCursorFramePointer(); 4505 return result; 4506 } 4507 4508 /** 4509 * Delete text from start to end in the focused textfield. If there is no 4510 * focus, or if start == end, silently fail. If start and end are out of 4511 * order, swap them. 4512 * @param start Beginning of selection to delete. 4513 * @param end End of selection to delete. 4514 */ 4515 /* package */ void deleteSelection(int start, int end) { 4516 mTextGeneration++; 4517 WebViewCore.TextSelectionData data 4518 = new WebViewCore.TextSelectionData(start, end); 4519 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4520 data); 4521 } 4522 4523 /** 4524 * Set the selection to (start, end) in the focused textfield. If start and 4525 * end are out of order, swap them. 4526 * @param start Beginning of selection. 4527 * @param end End of selection. 4528 */ 4529 /* package */ void setSelection(int start, int end) { 4530 if (mWebViewCore != null) { 4531 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4532 } 4533 } 4534 4535 @Override 4536 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4537 InputConnection connection = super.onCreateInputConnection(outAttrs); 4538 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4539 return connection; 4540 } 4541 4542 /** 4543 * Called in response to a message from webkit telling us that the soft 4544 * keyboard should be launched. 4545 */ 4546 private void displaySoftKeyboard(boolean isTextView) { 4547 InputMethodManager imm = (InputMethodManager) 4548 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4549 4550 // bring it back to the default level scale so that user can enter text 4551 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4552 if (zoom) { 4553 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4554 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4555 } 4556 if (isTextView) { 4557 rebuildWebTextView(); 4558 if (inEditingMode()) { 4559 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4560 if (zoom) { 4561 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4562 } 4563 return; 4564 } 4565 } 4566 // Used by plugins and contentEditable. 4567 // Also used if the navigation cache is out of date, and 4568 // does not recognize that a textfield is in focus. In that 4569 // case, use WebView as the targeted view. 4570 // see http://b/issue?id=2457459 4571 imm.showSoftInput(this, 0); 4572 } 4573 4574 // Called by WebKit to instruct the UI to hide the keyboard 4575 private void hideSoftKeyboard() { 4576 InputMethodManager imm = InputMethodManager.peekInstance(); 4577 if (imm != null && (imm.isActive(this) 4578 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4579 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4580 } 4581 } 4582 4583 /* 4584 * This method checks the current focus and cursor and potentially rebuilds 4585 * mWebTextView to have the appropriate properties, such as password, 4586 * multiline, and what text it contains. It also removes it if necessary. 4587 */ 4588 /* package */ void rebuildWebTextView() { 4589 // If the WebView does not have focus, do nothing until it gains focus. 4590 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4591 return; 4592 } 4593 boolean alreadyThere = inEditingMode(); 4594 // inEditingMode can only return true if mWebTextView is non-null, 4595 // so we can safely call remove() if (alreadyThere) 4596 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4597 if (alreadyThere) { 4598 mWebTextView.remove(); 4599 } 4600 return; 4601 } 4602 // At this point, we know we have found an input field, so go ahead 4603 // and create the WebTextView if necessary. 4604 if (mWebTextView == null) { 4605 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4606 // Initialize our generation number. 4607 mTextGeneration = 0; 4608 } 4609 mWebTextView.updateTextSize(); 4610 Rect visibleRect = new Rect(); 4611 calcOurContentVisibleRect(visibleRect); 4612 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4613 // should be in content coordinates. 4614 Rect bounds = nativeFocusCandidateNodeBounds(); 4615 Rect vBox = contentToViewRect(bounds); 4616 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4617 if (!Rect.intersects(bounds, visibleRect)) { 4618 revealSelection(); 4619 } 4620 String text = nativeFocusCandidateText(); 4621 int nodePointer = nativeFocusCandidatePointer(); 4622 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4623 Gravity.RIGHT : Gravity.NO_GRAVITY); 4624 // This needs to be called before setType, which may call 4625 // requestFormData, and it needs to have the correct nodePointer. 4626 mWebTextView.setNodePointer(nodePointer); 4627 mWebTextView.setType(nativeFocusCandidateType()); 4628 updateWebTextViewPadding(); 4629 if (null == text) { 4630 if (DebugFlags.WEB_VIEW) { 4631 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4632 } 4633 text = ""; 4634 } 4635 mWebTextView.setTextAndKeepSelection(text); 4636 InputMethodManager imm = InputMethodManager.peekInstance(); 4637 if (imm != null && imm.isActive(mWebTextView)) { 4638 imm.restartInput(mWebTextView); 4639 } 4640 if (isFocused()) { 4641 mWebTextView.requestFocus(); 4642 } 4643 } 4644 4645 /** 4646 * Update the padding of mWebTextView based on the native textfield/textarea 4647 */ 4648 void updateWebTextViewPadding() { 4649 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4650 if (paddingRect != null) { 4651 // Use contentToViewDimension since these are the dimensions of 4652 // the padding. 4653 mWebTextView.setPadding( 4654 contentToViewDimension(paddingRect.left), 4655 contentToViewDimension(paddingRect.top), 4656 contentToViewDimension(paddingRect.right), 4657 contentToViewDimension(paddingRect.bottom)); 4658 } 4659 } 4660 4661 /** 4662 * Tell webkit to put the cursor on screen. 4663 */ 4664 /* package */ void revealSelection() { 4665 if (mWebViewCore != null) { 4666 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4667 } 4668 } 4669 4670 /** 4671 * Called by WebTextView to find saved form data associated with the 4672 * textfield 4673 * @param name Name of the textfield. 4674 * @param nodePointer Pointer to the node of the textfield, so it can be 4675 * compared to the currently focused textfield when the data is 4676 * retrieved. 4677 * @param autoFillable true if WebKit has determined this field is part of 4678 * a form that can be auto filled. 4679 * @param autoComplete true if the attribute "autocomplete" is set to true 4680 * on the textfield. 4681 */ 4682 /* package */ void requestFormData(String name, int nodePointer, 4683 boolean autoFillable, boolean autoComplete) { 4684 if (mWebViewCore.getSettings().getSaveFormData()) { 4685 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4686 update.arg1 = nodePointer; 4687 RequestFormData updater = new RequestFormData(name, getUrl(), 4688 update, autoFillable, autoComplete); 4689 Thread t = new Thread(updater); 4690 t.start(); 4691 } 4692 } 4693 4694 /** 4695 * Pass a message to find out the <label> associated with the <input> 4696 * identified by nodePointer 4697 * @param framePointer Pointer to the frame containing the <input> node 4698 * @param nodePointer Pointer to the node for which a <label> is desired. 4699 */ 4700 /* package */ void requestLabel(int framePointer, int nodePointer) { 4701 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4702 nodePointer); 4703 } 4704 4705 /* 4706 * This class requests an Adapter for the WebTextView which shows past 4707 * entries stored in the database. It is a Runnable so that it can be done 4708 * in its own thread, without slowing down the UI. 4709 */ 4710 private class RequestFormData implements Runnable { 4711 private String mName; 4712 private String mUrl; 4713 private Message mUpdateMessage; 4714 private boolean mAutoFillable; 4715 private boolean mAutoComplete; 4716 private WebSettings mWebSettings; 4717 4718 public RequestFormData(String name, String url, Message msg, 4719 boolean autoFillable, boolean autoComplete) { 4720 mName = name; 4721 mUrl = url; 4722 mUpdateMessage = msg; 4723 mAutoFillable = autoFillable; 4724 mAutoComplete = autoComplete; 4725 mWebSettings = getSettings(); 4726 } 4727 4728 public void run() { 4729 ArrayList<String> pastEntries = new ArrayList<String>(); 4730 4731 if (mAutoFillable) { 4732 // Note that code inside the adapter click handler in WebTextView depends 4733 // on the AutoFill item being at the top of the drop down list. If you change 4734 // the order, make sure to do it there too! 4735 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 4736 pastEntries.add(getResources().getText( 4737 com.android.internal.R.string.autofill_this_form).toString() + 4738 " " + 4739 mAutoFillData.getPreviewString()); 4740 mWebTextView.setAutoFillProfileIsSet(true); 4741 } else { 4742 // There is no autofill profile set up yet, so add an option that 4743 // will invite the user to set their profile up. 4744 pastEntries.add(getResources().getText( 4745 com.android.internal.R.string.setup_autofill).toString()); 4746 mWebTextView.setAutoFillProfileIsSet(false); 4747 } 4748 } 4749 4750 if (mAutoComplete) { 4751 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4752 } 4753 4754 if (pastEntries.size() > 0) { 4755 AutoCompleteAdapter adapter = new 4756 AutoCompleteAdapter(mContext, pastEntries); 4757 mUpdateMessage.obj = adapter; 4758 mUpdateMessage.sendToTarget(); 4759 } 4760 } 4761 } 4762 4763 /** 4764 * Dump the display tree to "/sdcard/displayTree.txt" 4765 * 4766 * @hide debug only 4767 */ 4768 public void dumpDisplayTree() { 4769 nativeDumpDisplayTree(getUrl()); 4770 } 4771 4772 /** 4773 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4774 * "/sdcard/domTree.txt" 4775 * 4776 * @hide debug only 4777 */ 4778 public void dumpDomTree(boolean toFile) { 4779 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4780 } 4781 4782 /** 4783 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4784 * to "/sdcard/renderTree.txt" 4785 * 4786 * @hide debug only 4787 */ 4788 public void dumpRenderTree(boolean toFile) { 4789 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4790 } 4791 4792 /** 4793 * Called by DRT on UI thread, need to proxy to WebCore thread. 4794 * 4795 * @hide debug only 4796 */ 4797 public void useMockDeviceOrientation() { 4798 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4799 } 4800 4801 /** 4802 * Called by DRT on WebCore thread. 4803 * 4804 * @hide debug only 4805 */ 4806 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4807 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4808 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4809 canProvideGamma, gamma); 4810 } 4811 4812 /** 4813 * Dump the V8 counters to standard output. 4814 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4815 * true. Otherwise, this will do nothing. 4816 * 4817 * @hide debug only 4818 */ 4819 public void dumpV8Counters() { 4820 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4821 } 4822 4823 // This is used to determine long press with the center key. Does not 4824 // affect long press with the trackball/touch. 4825 private boolean mGotCenterDown = false; 4826 4827 @Override 4828 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4829 if (mBlockWebkitViewMessages) { 4830 return false; 4831 } 4832 // send complex characters to webkit for use by JS and plugins 4833 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4834 // pass the key to DOM 4835 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4836 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4837 // return true as DOM handles the key 4838 return true; 4839 } 4840 return false; 4841 } 4842 4843 private boolean isEnterActionKey(int keyCode) { 4844 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4845 || keyCode == KeyEvent.KEYCODE_ENTER 4846 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4847 } 4848 4849 @Override 4850 public boolean onKeyDown(int keyCode, KeyEvent event) { 4851 if (DebugFlags.WEB_VIEW) { 4852 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4853 + "keyCode=" + keyCode 4854 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4855 } 4856 if (mBlockWebkitViewMessages) { 4857 return false; 4858 } 4859 4860 // don't implement accelerator keys here; defer to host application 4861 if (event.isCtrlPressed()) { 4862 return false; 4863 } 4864 4865 if (mNativeClass == 0) { 4866 return false; 4867 } 4868 4869 // do this hack up front, so it always works, regardless of touch-mode 4870 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4871 mAutoRedraw = !mAutoRedraw; 4872 if (mAutoRedraw) { 4873 invalidate(); 4874 } 4875 return true; 4876 } 4877 4878 // Bubble up the key event if 4879 // 1. it is a system key; or 4880 // 2. the host application wants to handle it; 4881 if (event.isSystem() 4882 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4883 return false; 4884 } 4885 4886 // accessibility support 4887 if (accessibilityScriptInjected()) { 4888 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4889 // if an accessibility script is injected we delegate to it the key handling. 4890 // this script is a screen reader which is a fully fledged solution for blind 4891 // users to navigate in and interact with web pages. 4892 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4893 return true; 4894 } else { 4895 // Clean up if accessibility was disabled after loading the current URL. 4896 mAccessibilityScriptInjected = false; 4897 } 4898 } else if (mAccessibilityInjector != null) { 4899 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4900 if (mAccessibilityInjector.onKeyEvent(event)) { 4901 // if an accessibility injector is present (no JavaScript enabled or the site 4902 // opts out injecting our JavaScript screen reader) we let it decide whether 4903 // to act on and consume the event. 4904 return true; 4905 } 4906 } else { 4907 // Clean up if accessibility was disabled after loading the current URL. 4908 mAccessibilityInjector = null; 4909 } 4910 } 4911 4912 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4913 if (event.hasNoModifiers()) { 4914 pageUp(false); 4915 return true; 4916 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4917 pageUp(true); 4918 return true; 4919 } 4920 } 4921 4922 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4923 if (event.hasNoModifiers()) { 4924 pageDown(false); 4925 return true; 4926 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4927 pageDown(true); 4928 return true; 4929 } 4930 } 4931 4932 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4933 pageUp(true); 4934 return true; 4935 } 4936 4937 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4938 pageDown(true); 4939 return true; 4940 } 4941 4942 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4943 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4944 switchOutDrawHistory(); 4945 if (nativePageShouldHandleShiftAndArrows()) { 4946 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4947 return true; 4948 } 4949 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4950 switch (keyCode) { 4951 case KeyEvent.KEYCODE_DPAD_UP: 4952 pageUp(true); 4953 return true; 4954 case KeyEvent.KEYCODE_DPAD_DOWN: 4955 pageDown(true); 4956 return true; 4957 case KeyEvent.KEYCODE_DPAD_LEFT: 4958 nativeClearCursor(); // start next trackball movement from page edge 4959 return pinScrollTo(0, mScrollY, true, 0); 4960 case KeyEvent.KEYCODE_DPAD_RIGHT: 4961 nativeClearCursor(); // start next trackball movement from page edge 4962 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4963 } 4964 } 4965 if (mSelectingText) { 4966 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4967 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4968 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4969 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4970 int multiplier = event.getRepeatCount() + 1; 4971 moveSelection(xRate * multiplier, yRate * multiplier); 4972 return true; 4973 } 4974 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4975 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4976 return true; 4977 } 4978 // Bubble up the key event as WebView doesn't handle it 4979 return false; 4980 } 4981 4982 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4983 switchOutDrawHistory(); 4984 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4985 || nativeCursorWantsKeyEvents(); 4986 if (event.getRepeatCount() == 0) { 4987 if (mSelectingText) { 4988 return true; // discard press if copy in progress 4989 } 4990 mGotCenterDown = true; 4991 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4992 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4993 // Already checked mNativeClass, so we do not need to check it 4994 // again. 4995 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4996 if (!wantsKeyEvents) return true; 4997 } 4998 // Bubble up the key event as WebView doesn't handle it 4999 if (!wantsKeyEvents) return false; 5000 } 5001 5002 if (getSettings().getNavDump()) { 5003 switch (keyCode) { 5004 case KeyEvent.KEYCODE_4: 5005 dumpDisplayTree(); 5006 break; 5007 case KeyEvent.KEYCODE_5: 5008 case KeyEvent.KEYCODE_6: 5009 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5010 break; 5011 case KeyEvent.KEYCODE_7: 5012 case KeyEvent.KEYCODE_8: 5013 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5014 break; 5015 case KeyEvent.KEYCODE_9: 5016 nativeInstrumentReport(); 5017 return true; 5018 } 5019 } 5020 5021 if (nativeCursorIsTextInput()) { 5022 // This message will put the node in focus, for the DOM's notion 5023 // of focus. 5024 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5025 nativeCursorNodePointer()); 5026 // This will bring up the WebTextView and put it in focus, for 5027 // our view system's notion of focus 5028 rebuildWebTextView(); 5029 // Now we need to pass the event to it 5030 if (inEditingMode()) { 5031 mWebTextView.setDefaultSelection(); 5032 return mWebTextView.dispatchKeyEvent(event); 5033 } 5034 } else if (nativeHasFocusNode()) { 5035 // In this case, the cursor is not on a text input, but the focus 5036 // might be. Check it, and if so, hand over to the WebTextView. 5037 rebuildWebTextView(); 5038 if (inEditingMode()) { 5039 mWebTextView.setDefaultSelection(); 5040 return mWebTextView.dispatchKeyEvent(event); 5041 } 5042 } 5043 5044 // TODO: should we pass all the keys to DOM or check the meta tag 5045 if (nativeCursorWantsKeyEvents() || true) { 5046 // pass the key to DOM 5047 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5048 // return true as DOM handles the key 5049 return true; 5050 } 5051 5052 // Bubble up the key event as WebView doesn't handle it 5053 return false; 5054 } 5055 5056 @Override 5057 public boolean onKeyUp(int keyCode, KeyEvent event) { 5058 if (DebugFlags.WEB_VIEW) { 5059 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5060 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5061 } 5062 if (mBlockWebkitViewMessages) { 5063 return false; 5064 } 5065 5066 if (mNativeClass == 0) { 5067 return false; 5068 } 5069 5070 // special CALL handling when cursor node's href is "tel:XXX" 5071 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5072 String text = nativeCursorText(); 5073 if (!nativeCursorIsTextInput() && text != null 5074 && text.startsWith(SCHEME_TEL)) { 5075 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5076 getContext().startActivity(intent); 5077 return true; 5078 } 5079 } 5080 5081 // Bubble up the key event if 5082 // 1. it is a system key; or 5083 // 2. the host application wants to handle it; 5084 if (event.isSystem() 5085 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5086 return false; 5087 } 5088 5089 // accessibility support 5090 if (accessibilityScriptInjected()) { 5091 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5092 // if an accessibility script is injected we delegate to it the key handling. 5093 // this script is a screen reader which is a fully fledged solution for blind 5094 // users to navigate in and interact with web pages. 5095 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5096 return true; 5097 } else { 5098 // Clean up if accessibility was disabled after loading the current URL. 5099 mAccessibilityScriptInjected = false; 5100 } 5101 } else if (mAccessibilityInjector != null) { 5102 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5103 if (mAccessibilityInjector.onKeyEvent(event)) { 5104 // if an accessibility injector is present (no JavaScript enabled or the site 5105 // opts out injecting our JavaScript screen reader) we let it decide whether to 5106 // act on and consume the event. 5107 return true; 5108 } 5109 } else { 5110 // Clean up if accessibility was disabled after loading the current URL. 5111 mAccessibilityInjector = null; 5112 } 5113 } 5114 5115 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5116 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5117 if (nativePageShouldHandleShiftAndArrows()) { 5118 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5119 return true; 5120 } 5121 // always handle the navigation keys in the UI thread 5122 // Bubble up the key event as WebView doesn't handle it 5123 return false; 5124 } 5125 5126 if (isEnterActionKey(keyCode)) { 5127 // remove the long press message first 5128 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5129 mGotCenterDown = false; 5130 5131 if (mSelectingText) { 5132 if (mExtendSelection) { 5133 copySelection(); 5134 selectionDone(); 5135 } else { 5136 mExtendSelection = true; 5137 nativeSetExtendSelection(); 5138 invalidate(); // draw the i-beam instead of the arrow 5139 } 5140 return true; // discard press if copy in progress 5141 } 5142 5143 // perform the single click 5144 Rect visibleRect = sendOurVisibleRect(); 5145 // Note that sendOurVisibleRect calls viewToContent, so the 5146 // coordinates should be in content coordinates. 5147 if (!nativeCursorIntersects(visibleRect)) { 5148 return false; 5149 } 5150 WebViewCore.CursorData data = cursorData(); 5151 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5152 playSoundEffect(SoundEffectConstants.CLICK); 5153 if (nativeCursorIsTextInput()) { 5154 rebuildWebTextView(); 5155 centerKeyPressOnTextField(); 5156 if (inEditingMode()) { 5157 mWebTextView.setDefaultSelection(); 5158 } 5159 return true; 5160 } 5161 clearTextEntry(); 5162 nativeShowCursorTimed(); 5163 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5164 return true; 5165 } 5166 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5167 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5168 nativeCursorNodePointer()); 5169 return true; 5170 } 5171 } 5172 5173 // TODO: should we pass all the keys to DOM or check the meta tag 5174 if (nativeCursorWantsKeyEvents() || true) { 5175 // pass the key to DOM 5176 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5177 // return true as DOM handles the key 5178 return true; 5179 } 5180 5181 // Bubble up the key event as WebView doesn't handle it 5182 return false; 5183 } 5184 5185 /* 5186 * Enter selecting text mode, and see if CAB should be shown. 5187 * Returns true if the WebView is now in 5188 * selecting text mode (including if it was already in that mode, and this 5189 * method did nothing). 5190 */ 5191 private boolean setUpSelect(boolean selectWord, int x, int y) { 5192 if (0 == mNativeClass) return false; // client isn't initialized 5193 if (inFullScreenMode()) return false; 5194 if (mSelectingText) return true; 5195 nativeResetSelection(); 5196 if (selectWord && !nativeWordSelection(x, y)) { 5197 selectionDone(); 5198 return false; 5199 } 5200 mSelectCallback = new SelectActionModeCallback(); 5201 mSelectCallback.setWebView(this); 5202 if (startActionMode(mSelectCallback) == null) { 5203 // There is no ActionMode, so do not allow the user to modify a 5204 // selection. 5205 selectionDone(); 5206 return false; 5207 } 5208 mExtendSelection = false; 5209 mSelectingText = mDrawSelectionPointer = true; 5210 // don't let the picture change during text selection 5211 WebViewCore.pauseUpdatePicture(mWebViewCore); 5212 if (nativeHasCursorNode()) { 5213 Rect rect = nativeCursorNodeBounds(); 5214 mSelectX = contentToViewX(rect.left); 5215 mSelectY = contentToViewY(rect.top); 5216 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5217 mSelectX = mScrollX + mLastTouchX; 5218 mSelectY = mScrollY + mLastTouchY; 5219 } else { 5220 mSelectX = mScrollX + getViewWidth() / 2; 5221 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5222 } 5223 nativeHideCursor(); 5224 mMinAutoScrollX = 0; 5225 mMaxAutoScrollX = getViewWidth(); 5226 mMinAutoScrollY = 0; 5227 mMaxAutoScrollY = getViewHeightWithTitle(); 5228 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 5229 viewToContentY(mSelectY), mScrollingLayerRect, 5230 mScrollingLayerBounds); 5231 if (mScrollingLayer != 0) { 5232 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5233 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5234 contentToViewX(mScrollingLayerBounds.left)); 5235 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5236 contentToViewX(mScrollingLayerBounds.right)); 5237 } 5238 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5239 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5240 contentToViewY(mScrollingLayerBounds.top)); 5241 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5242 contentToViewY(mScrollingLayerBounds.bottom)); 5243 } 5244 } 5245 mMinAutoScrollX += SELECT_SCROLL; 5246 mMaxAutoScrollX -= SELECT_SCROLL; 5247 mMinAutoScrollY += SELECT_SCROLL; 5248 mMaxAutoScrollY -= SELECT_SCROLL; 5249 return true; 5250 } 5251 5252 /** 5253 * Use this method to put the WebView into text selection mode. 5254 * Do not rely on this functionality; it will be deprecated in the future. 5255 * @deprecated This method is now obsolete. 5256 */ 5257 @Deprecated 5258 public void emulateShiftHeld() { 5259 checkThread(); 5260 setUpSelect(false, 0, 0); 5261 } 5262 5263 /** 5264 * Select all of the text in this WebView. 5265 * 5266 * @hide pending API council approval. 5267 */ 5268 public void selectAll() { 5269 if (0 == mNativeClass) return; // client isn't initialized 5270 if (inFullScreenMode()) return; 5271 if (!mSelectingText) { 5272 // retrieve a point somewhere within the text 5273 Point select = nativeSelectableText(); 5274 if (!selectText(select.x, select.y)) return; 5275 } 5276 nativeSelectAll(); 5277 mDrawSelectionPointer = false; 5278 mExtendSelection = true; 5279 invalidate(); 5280 } 5281 5282 /** 5283 * Called when the selection has been removed. 5284 */ 5285 void selectionDone() { 5286 if (mSelectingText) { 5287 mSelectingText = false; 5288 // finish is idempotent, so this is fine even if selectionDone was 5289 // called by mSelectCallback.onDestroyActionMode 5290 mSelectCallback.finish(); 5291 mSelectCallback = null; 5292 WebViewCore.resumePriority(); 5293 WebViewCore.resumeUpdatePicture(mWebViewCore); 5294 invalidate(); // redraw without selection 5295 mAutoScrollX = 0; 5296 mAutoScrollY = 0; 5297 mSentAutoScrollMessage = false; 5298 } 5299 } 5300 5301 /** 5302 * Copy the selection to the clipboard 5303 * 5304 * @hide pending API council approval. 5305 */ 5306 public boolean copySelection() { 5307 boolean copiedSomething = false; 5308 String selection = getSelection(); 5309 if (selection != null && selection != "") { 5310 if (DebugFlags.WEB_VIEW) { 5311 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5312 } 5313 Toast.makeText(mContext 5314 , com.android.internal.R.string.text_copied 5315 , Toast.LENGTH_SHORT).show(); 5316 copiedSomething = true; 5317 ClipboardManager cm = (ClipboardManager)getContext() 5318 .getSystemService(Context.CLIPBOARD_SERVICE); 5319 cm.setText(selection); 5320 } 5321 invalidate(); // remove selection region and pointer 5322 return copiedSomething; 5323 } 5324 5325 /** 5326 * @hide pending API Council approval. 5327 */ 5328 public SearchBox getSearchBox() { 5329 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5330 return null; 5331 } 5332 return mWebViewCore.getBrowserFrame().getSearchBox(); 5333 } 5334 5335 /** 5336 * Returns the currently highlighted text as a string. 5337 */ 5338 String getSelection() { 5339 if (mNativeClass == 0) return ""; 5340 return nativeGetSelection(); 5341 } 5342 5343 @Override 5344 protected void onAttachedToWindow() { 5345 super.onAttachedToWindow(); 5346 if (hasWindowFocus()) setActive(true); 5347 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5348 if (mGlobalLayoutListener == null) { 5349 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5350 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5351 } 5352 if (mScrollChangedListener == null) { 5353 mScrollChangedListener = new InnerScrollChangedListener(); 5354 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5355 } 5356 5357 addAccessibilityApisToJavaScript(); 5358 5359 mTouchEventQueue.reset(); 5360 } 5361 5362 @Override 5363 protected void onDetachedFromWindow() { 5364 clearHelpers(); 5365 mZoomManager.dismissZoomPicker(); 5366 if (hasWindowFocus()) setActive(false); 5367 5368 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5369 if (mGlobalLayoutListener != null) { 5370 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5371 mGlobalLayoutListener = null; 5372 } 5373 if (mScrollChangedListener != null) { 5374 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5375 mScrollChangedListener = null; 5376 } 5377 5378 removeAccessibilityApisFromJavaScript(); 5379 5380 super.onDetachedFromWindow(); 5381 } 5382 5383 @Override 5384 protected void onVisibilityChanged(View changedView, int visibility) { 5385 super.onVisibilityChanged(changedView, visibility); 5386 // The zoomManager may be null if the webview is created from XML that 5387 // specifies the view's visibility param as not visible (see http://b/2794841) 5388 if (visibility != View.VISIBLE && mZoomManager != null) { 5389 mZoomManager.dismissZoomPicker(); 5390 } 5391 } 5392 5393 /** 5394 * @deprecated WebView no longer needs to implement 5395 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5396 */ 5397 @Deprecated 5398 public void onChildViewAdded(View parent, View child) {} 5399 5400 /** 5401 * @deprecated WebView no longer needs to implement 5402 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5403 */ 5404 @Deprecated 5405 public void onChildViewRemoved(View p, View child) {} 5406 5407 /** 5408 * @deprecated WebView should not have implemented 5409 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5410 */ 5411 @Deprecated 5412 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5413 } 5414 5415 void setActive(boolean active) { 5416 if (active) { 5417 if (hasFocus()) { 5418 // If our window regained focus, and we have focus, then begin 5419 // drawing the cursor ring 5420 mDrawCursorRing = true; 5421 setFocusControllerActive(true); 5422 if (mNativeClass != 0) { 5423 nativeRecordButtons(true, false, true); 5424 } 5425 } else { 5426 if (!inEditingMode()) { 5427 // If our window gained focus, but we do not have it, do not 5428 // draw the cursor ring. 5429 mDrawCursorRing = false; 5430 setFocusControllerActive(false); 5431 } 5432 // We do not call nativeRecordButtons here because we assume 5433 // that when we lost focus, or window focus, it got called with 5434 // false for the first parameter 5435 } 5436 } else { 5437 if (!mZoomManager.isZoomPickerVisible()) { 5438 /* 5439 * The external zoom controls come in their own window, so our 5440 * window loses focus. Our policy is to not draw the cursor ring 5441 * if our window is not focused, but this is an exception since 5442 * the user can still navigate the web page with the zoom 5443 * controls showing. 5444 */ 5445 mDrawCursorRing = false; 5446 } 5447 mKeysPressed.clear(); 5448 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5449 mTouchMode = TOUCH_DONE_MODE; 5450 if (mNativeClass != 0) { 5451 nativeRecordButtons(false, false, true); 5452 } 5453 setFocusControllerActive(false); 5454 } 5455 invalidate(); 5456 } 5457 5458 // To avoid drawing the cursor ring, and remove the TextView when our window 5459 // loses focus. 5460 @Override 5461 public void onWindowFocusChanged(boolean hasWindowFocus) { 5462 setActive(hasWindowFocus); 5463 if (hasWindowFocus) { 5464 JWebCoreJavaBridge.setActiveWebView(this); 5465 } else { 5466 JWebCoreJavaBridge.removeActiveWebView(this); 5467 } 5468 super.onWindowFocusChanged(hasWindowFocus); 5469 } 5470 5471 /* 5472 * Pass a message to WebCore Thread, telling the WebCore::Page's 5473 * FocusController to be "inactive" so that it will 5474 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5475 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5476 */ 5477 /* package */ void setFocusControllerActive(boolean active) { 5478 if (mWebViewCore == null) return; 5479 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5480 // Need to send this message after the document regains focus. 5481 if (active && mListBoxMessage != null) { 5482 mWebViewCore.sendMessage(mListBoxMessage); 5483 mListBoxMessage = null; 5484 } 5485 } 5486 5487 @Override 5488 protected void onFocusChanged(boolean focused, int direction, 5489 Rect previouslyFocusedRect) { 5490 if (DebugFlags.WEB_VIEW) { 5491 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5492 } 5493 if (focused) { 5494 // When we regain focus, if we have window focus, resume drawing 5495 // the cursor ring 5496 if (hasWindowFocus()) { 5497 mDrawCursorRing = true; 5498 if (mNativeClass != 0) { 5499 nativeRecordButtons(true, false, true); 5500 } 5501 setFocusControllerActive(true); 5502 //} else { 5503 // The WebView has gained focus while we do not have 5504 // windowfocus. When our window lost focus, we should have 5505 // called nativeRecordButtons(false...) 5506 } 5507 } else { 5508 // When we lost focus, unless focus went to the TextView (which is 5509 // true if we are in editing mode), stop drawing the cursor ring. 5510 if (!inEditingMode()) { 5511 mDrawCursorRing = false; 5512 if (mNativeClass != 0) { 5513 nativeRecordButtons(false, false, true); 5514 } 5515 setFocusControllerActive(false); 5516 } 5517 mKeysPressed.clear(); 5518 } 5519 5520 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5521 } 5522 5523 void setGLRectViewport() { 5524 // Use the getGlobalVisibleRect() to get the intersection among the parents 5525 // visible == false means we're clipped - send a null rect down to indicate that 5526 // we should not draw 5527 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5528 if (visible) { 5529 // Then need to invert the Y axis, just for GL 5530 View rootView = getRootView(); 5531 int rootViewHeight = rootView.getHeight(); 5532 mViewRectViewport.set(mGLRectViewport); 5533 int savedWebViewBottom = mGLRectViewport.bottom; 5534 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5535 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5536 mGLViewportEmpty = false; 5537 } else { 5538 mGLViewportEmpty = true; 5539 } 5540 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5541 mGLViewportEmpty ? null : mViewRectViewport); 5542 } 5543 5544 /** 5545 * @hide 5546 */ 5547 @Override 5548 protected boolean setFrame(int left, int top, int right, int bottom) { 5549 boolean changed = super.setFrame(left, top, right, bottom); 5550 if (!changed && mHeightCanMeasure) { 5551 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5552 // in WebViewCore after we get the first layout. We do call 5553 // requestLayout() when we get contentSizeChanged(). But the View 5554 // system won't call onSizeChanged if the dimension is not changed. 5555 // In this case, we need to call sendViewSizeZoom() explicitly to 5556 // notify the WebKit about the new dimensions. 5557 sendViewSizeZoom(false); 5558 } 5559 setGLRectViewport(); 5560 return changed; 5561 } 5562 5563 @Override 5564 protected void onSizeChanged(int w, int h, int ow, int oh) { 5565 super.onSizeChanged(w, h, ow, oh); 5566 5567 // adjust the max viewport width depending on the view dimensions. This 5568 // is to ensure the scaling is not going insane. So do not shrink it if 5569 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5570 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5571 if (newMaxViewportWidth > sMaxViewportWidth) { 5572 sMaxViewportWidth = newMaxViewportWidth; 5573 } 5574 5575 mZoomManager.onSizeChanged(w, h, ow, oh); 5576 5577 if (mLoadedPicture != null && mDelaySetPicture == null) { 5578 // Size changes normally result in a new picture 5579 // Re-set the loaded picture to simulate that 5580 // However, do not update the base layer as that hasn't changed 5581 setNewPicture(mLoadedPicture, false); 5582 } 5583 } 5584 5585 @Override 5586 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5587 super.onScrollChanged(l, t, oldl, oldt); 5588 if (!mInOverScrollMode) { 5589 sendOurVisibleRect(); 5590 // update WebKit if visible title bar height changed. The logic is same 5591 // as getVisibleTitleHeightImpl. 5592 int titleHeight = getTitleHeight(); 5593 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5594 sendViewSizeZoom(false); 5595 } 5596 } 5597 } 5598 5599 @Override 5600 public boolean dispatchKeyEvent(KeyEvent event) { 5601 switch (event.getAction()) { 5602 case KeyEvent.ACTION_DOWN: 5603 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5604 break; 5605 case KeyEvent.ACTION_MULTIPLE: 5606 // Always accept the action. 5607 break; 5608 case KeyEvent.ACTION_UP: 5609 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5610 if (location == -1) { 5611 // We did not receive the key down for this key, so do not 5612 // handle the key up. 5613 return false; 5614 } else { 5615 // We did receive the key down. Handle the key up, and 5616 // remove it from our pressed keys. 5617 mKeysPressed.remove(location); 5618 } 5619 break; 5620 default: 5621 // Accept the action. This should not happen, unless a new 5622 // action is added to KeyEvent. 5623 break; 5624 } 5625 if (inEditingMode() && mWebTextView.isFocused()) { 5626 // Ensure that the WebTextView gets the event, even if it does 5627 // not currently have a bounds. 5628 return mWebTextView.dispatchKeyEvent(event); 5629 } else { 5630 return super.dispatchKeyEvent(event); 5631 } 5632 } 5633 5634 /* 5635 * Here is the snap align logic: 5636 * 1. If it starts nearly horizontally or vertically, snap align; 5637 * 2. If there is a dramitic direction change, let it go; 5638 * 5639 * Adjustable parameters. Angle is the radians on a unit circle, limited 5640 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5641 */ 5642 private static final float HSLOPE_TO_START_SNAP = .25f; 5643 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5644 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5645 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5646 /* 5647 * These values are used to influence the average angle when entering 5648 * snap mode. If is is the first movement entering snap, we set the average 5649 * to the appropriate ideal. If the user is entering into snap after the 5650 * first movement, then we average the average angle with these values. 5651 */ 5652 private static final float ANGLE_VERT = 2f; 5653 private static final float ANGLE_HORIZ = 0f; 5654 /* 5655 * The modified moving average weight. 5656 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5657 */ 5658 private static final float MMA_WEIGHT_N = 5; 5659 5660 private boolean hitFocusedPlugin(int contentX, int contentY) { 5661 if (DebugFlags.WEB_VIEW) { 5662 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5663 Rect r = nativeFocusNodeBounds(); 5664 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5665 + ", " + r.right + ", " + r.bottom + ")"); 5666 } 5667 return nativeFocusIsPlugin() 5668 && nativeFocusNodeBounds().contains(contentX, contentY); 5669 } 5670 5671 private boolean shouldForwardTouchEvent() { 5672 if (mFullScreenHolder != null) return true; 5673 if (mBlockWebkitViewMessages) return false; 5674 return mForwardTouchEvents 5675 && !mSelectingText 5676 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5677 && mPreventDefault != PREVENT_DEFAULT_NO; 5678 } 5679 5680 private boolean inFullScreenMode() { 5681 return mFullScreenHolder != null; 5682 } 5683 5684 private void dismissFullScreenMode() { 5685 if (inFullScreenMode()) { 5686 mFullScreenHolder.hide(); 5687 mFullScreenHolder = null; 5688 } 5689 } 5690 5691 void onPinchToZoomAnimationStart() { 5692 // cancel the single touch handling 5693 cancelTouch(); 5694 onZoomAnimationStart(); 5695 } 5696 5697 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5698 onZoomAnimationEnd(); 5699 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5700 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5701 // as it may trigger the unwanted fling. 5702 mTouchMode = TOUCH_PINCH_DRAG; 5703 mConfirmMove = true; 5704 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5705 } 5706 5707 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5708 // layer is found. 5709 private void startScrollingLayer(float x, float y) { 5710 int contentX = viewToContentX((int) x + mScrollX); 5711 int contentY = viewToContentY((int) y + mScrollY); 5712 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5713 mScrollingLayerRect, mScrollingLayerBounds); 5714 if (mScrollingLayer != 0) { 5715 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5716 } 5717 } 5718 5719 // 1/(density * density) used to compute the distance between points. 5720 // Computed in init(). 5721 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5722 5723 // The distance between two points reported in onTouchEvent scaled by the 5724 // density of the screen. 5725 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5726 5727 @Override 5728 public boolean onHoverEvent(MotionEvent event) { 5729 if (mNativeClass == 0) { 5730 return false; 5731 } 5732 WebViewCore.CursorData data = cursorDataNoPosition(); 5733 data.mX = viewToContentX((int) event.getX() + mScrollX); 5734 data.mY = viewToContentY((int) event.getY() + mScrollY); 5735 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5736 return true; 5737 } 5738 5739 @Override 5740 public boolean onTouchEvent(MotionEvent ev) { 5741 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5742 return false; 5743 } 5744 5745 if (DebugFlags.WEB_VIEW) { 5746 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5747 + " mTouchMode=" + mTouchMode 5748 + " numPointers=" + ev.getPointerCount()); 5749 } 5750 5751 // If WebKit wasn't interested in this multitouch gesture, enqueue 5752 // the event for handling directly rather than making the round trip 5753 // to WebKit and back. 5754 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5755 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5756 } else { 5757 mTouchEventQueue.enqueueTouchEvent(ev); 5758 } 5759 5760 // Since all events are handled asynchronously, we always want the gesture stream. 5761 return true; 5762 } 5763 5764 private float calculateDragAngle(int dx, int dy) { 5765 dx = Math.abs(dx); 5766 dy = Math.abs(dy); 5767 return (float) Math.atan2(dy, dx); 5768 } 5769 5770 /* 5771 * Common code for single touch and multi-touch. 5772 * (x, y) denotes current focus point, which is the touch point for single touch 5773 * and the middle point for multi-touch. 5774 */ 5775 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5776 long eventTime = ev.getEventTime(); 5777 5778 // Due to the touch screen edge effect, a touch closer to the edge 5779 // always snapped to the edge. As getViewWidth() can be different from 5780 // getWidth() due to the scrollbar, adjusting the point to match 5781 // getViewWidth(). Same applied to the height. 5782 x = Math.min(x, getViewWidth() - 1); 5783 y = Math.min(y, getViewHeightWithTitle() - 1); 5784 5785 int deltaX = mLastTouchX - x; 5786 int deltaY = mLastTouchY - y; 5787 int contentX = viewToContentX(x + mScrollX); 5788 int contentY = viewToContentY(y + mScrollY); 5789 5790 switch (action) { 5791 case MotionEvent.ACTION_DOWN: { 5792 mPreventDefault = PREVENT_DEFAULT_NO; 5793 mConfirmMove = false; 5794 mInitialHitTestResult = null; 5795 if (!mScroller.isFinished()) { 5796 // stop the current scroll animation, but if this is 5797 // the start of a fling, allow it to add to the current 5798 // fling's velocity 5799 mScroller.abortAnimation(); 5800 mTouchMode = TOUCH_DRAG_START_MODE; 5801 mConfirmMove = true; 5802 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5803 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5804 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5805 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 5806 removeTouchHighlight(); 5807 } 5808 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5809 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5810 } else { 5811 // commit the short press action for the previous tap 5812 doShortPress(); 5813 mTouchMode = TOUCH_INIT_MODE; 5814 mDeferTouchProcess = !mBlockWebkitViewMessages 5815 && (!inFullScreenMode() && mForwardTouchEvents) 5816 ? hitFocusedPlugin(contentX, contentY) 5817 : false; 5818 } 5819 } else { // the normal case 5820 mTouchMode = TOUCH_INIT_MODE; 5821 mDeferTouchProcess = !mBlockWebkitViewMessages 5822 && (!inFullScreenMode() && mForwardTouchEvents) 5823 ? hitFocusedPlugin(contentX, contentY) 5824 : false; 5825 if (!mBlockWebkitViewMessages) { 5826 mWebViewCore.sendMessage( 5827 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5828 } 5829 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 5830 TouchHighlightData data = new TouchHighlightData(); 5831 data.mX = contentX; 5832 data.mY = contentY; 5833 data.mNativeLayerRect = new Rect(); 5834 data.mNativeLayer = nativeScrollableLayer( 5835 contentX, contentY, data.mNativeLayerRect, null); 5836 data.mSlop = viewToContentDimension(mNavSlop); 5837 mTouchHighlightRegion.setEmpty(); 5838 if (!mBlockWebkitViewMessages) { 5839 mTouchHighlightRequested = System.currentTimeMillis(); 5840 mWebViewCore.sendMessageAtFrontOfQueue( 5841 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data); 5842 } 5843 if (DEBUG_TOUCH_HIGHLIGHT) { 5844 if (getSettings().getNavDump()) { 5845 mTouchHighlightX = (int) x + mScrollX; 5846 mTouchHighlightY = (int) y + mScrollY; 5847 mPrivateHandler.postDelayed(new Runnable() { 5848 public void run() { 5849 mTouchHighlightX = mTouchHighlightY = 0; 5850 invalidate(); 5851 } 5852 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5853 } 5854 } 5855 } 5856 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5857 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5858 (eventTime - mLastTouchUpTime), eventTime); 5859 } 5860 if (mSelectingText) { 5861 mDrawSelectionPointer = false; 5862 mSelectionStarted = nativeStartSelection(contentX, contentY); 5863 if (DebugFlags.WEB_VIEW) { 5864 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5865 } 5866 invalidate(); 5867 } 5868 } 5869 // Trigger the link 5870 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5871 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5872 mPrivateHandler.sendEmptyMessageDelayed( 5873 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5874 mPrivateHandler.sendEmptyMessageDelayed( 5875 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5876 if (inFullScreenMode() || mDeferTouchProcess) { 5877 mPreventDefault = PREVENT_DEFAULT_YES; 5878 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 5879 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5880 } else { 5881 mPreventDefault = PREVENT_DEFAULT_NO; 5882 } 5883 // pass the touch events from UI thread to WebCore thread 5884 if (shouldForwardTouchEvent()) { 5885 TouchEventData ted = new TouchEventData(); 5886 ted.mAction = action; 5887 ted.mIds = new int[1]; 5888 ted.mIds[0] = ev.getPointerId(0); 5889 ted.mPoints = new Point[1]; 5890 ted.mPoints[0] = new Point(contentX, contentY); 5891 ted.mPointsInView = new Point[1]; 5892 ted.mPointsInView[0] = new Point(x, y); 5893 ted.mMetaState = ev.getMetaState(); 5894 ted.mReprocess = mDeferTouchProcess; 5895 ted.mNativeLayer = nativeScrollableLayer( 5896 contentX, contentY, ted.mNativeLayerRect, null); 5897 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5898 mTouchEventQueue.preQueueTouchEventData(ted); 5899 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5900 if (mDeferTouchProcess) { 5901 // still needs to set them for compute deltaX/Y 5902 mLastTouchX = x; 5903 mLastTouchY = y; 5904 break; 5905 } 5906 if (!inFullScreenMode()) { 5907 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5908 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5909 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5910 action, 0), TAP_TIMEOUT); 5911 } 5912 } 5913 } 5914 startTouch(x, y, eventTime); 5915 break; 5916 } 5917 case MotionEvent.ACTION_MOVE: { 5918 boolean firstMove = false; 5919 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5920 >= mTouchSlopSquare) { 5921 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5922 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5923 mConfirmMove = true; 5924 firstMove = true; 5925 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5926 mTouchMode = TOUCH_INIT_MODE; 5927 } 5928 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 5929 removeTouchHighlight(); 5930 } 5931 } 5932 // pass the touch events from UI thread to WebCore thread 5933 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5934 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5935 TouchEventData ted = new TouchEventData(); 5936 ted.mAction = action; 5937 ted.mIds = new int[1]; 5938 ted.mIds[0] = ev.getPointerId(0); 5939 ted.mPoints = new Point[1]; 5940 ted.mPoints[0] = new Point(contentX, contentY); 5941 ted.mPointsInView = new Point[1]; 5942 ted.mPointsInView[0] = new Point(x, y); 5943 ted.mMetaState = ev.getMetaState(); 5944 ted.mReprocess = mDeferTouchProcess; 5945 ted.mNativeLayer = mScrollingLayer; 5946 ted.mNativeLayerRect.set(mScrollingLayerRect); 5947 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5948 mTouchEventQueue.preQueueTouchEventData(ted); 5949 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5950 mLastSentTouchTime = eventTime; 5951 if (mDeferTouchProcess) { 5952 break; 5953 } 5954 if (firstMove && !inFullScreenMode()) { 5955 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5956 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5957 action, 0), TAP_TIMEOUT); 5958 } 5959 } 5960 if (mTouchMode == TOUCH_DONE_MODE 5961 || mPreventDefault == PREVENT_DEFAULT_YES) { 5962 // no dragging during scroll zoom animation, or when prevent 5963 // default is yes 5964 break; 5965 } 5966 if (mVelocityTracker == null) { 5967 Log.e(LOGTAG, "Got null mVelocityTracker when " 5968 + "mPreventDefault = " + mPreventDefault 5969 + " mDeferTouchProcess = " + mDeferTouchProcess 5970 + " mTouchMode = " + mTouchMode); 5971 } else { 5972 mVelocityTracker.addMovement(ev); 5973 } 5974 if (mSelectingText && mSelectionStarted) { 5975 if (DebugFlags.WEB_VIEW) { 5976 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5977 } 5978 ViewParent parent = getParent(); 5979 if (parent != null) { 5980 parent.requestDisallowInterceptTouchEvent(true); 5981 } 5982 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5983 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5984 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5985 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5986 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5987 && !mSentAutoScrollMessage) { 5988 mSentAutoScrollMessage = true; 5989 mPrivateHandler.sendEmptyMessageDelayed( 5990 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5991 } 5992 if (deltaX != 0 || deltaY != 0) { 5993 nativeExtendSelection(contentX, contentY); 5994 invalidate(); 5995 } 5996 break; 5997 } 5998 5999 if (mTouchMode != TOUCH_DRAG_MODE && 6000 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6001 6002 if (!mConfirmMove) { 6003 break; 6004 } 6005 6006 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6007 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6008 // track mLastTouchTime as we may need to do fling at 6009 // ACTION_UP 6010 mLastTouchTime = eventTime; 6011 break; 6012 } 6013 6014 // Only lock dragging to one axis if we don't have a scale in progress. 6015 // Scaling implies free-roaming movement. Note this is only ever a question 6016 // if mZoomManager.supportsPanDuringZoom() is true. 6017 final ScaleGestureDetector detector = 6018 mZoomManager.getMultiTouchGestureDetector(); 6019 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6020 if (detector == null || !detector.isInProgress()) { 6021 // if it starts nearly horizontal or vertical, enforce it 6022 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6023 mSnapScrollMode = SNAP_X; 6024 mSnapPositive = deltaX > 0; 6025 mAverageAngle = ANGLE_HORIZ; 6026 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6027 mSnapScrollMode = SNAP_Y; 6028 mSnapPositive = deltaY > 0; 6029 mAverageAngle = ANGLE_VERT; 6030 } 6031 } 6032 6033 mTouchMode = TOUCH_DRAG_MODE; 6034 mLastTouchX = x; 6035 mLastTouchY = y; 6036 deltaX = 0; 6037 deltaY = 0; 6038 6039 startScrollingLayer(x, y); 6040 startDrag(); 6041 } 6042 6043 // do pan 6044 boolean done = false; 6045 boolean keepScrollBarsVisible = false; 6046 if (deltaX == 0 && deltaY == 0) { 6047 keepScrollBarsVisible = done = true; 6048 } else { 6049 mAverageAngle += 6050 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6051 / MMA_WEIGHT_N; 6052 if (mSnapScrollMode != SNAP_NONE) { 6053 if (mSnapScrollMode == SNAP_Y) { 6054 // radical change means getting out of snap mode 6055 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6056 mSnapScrollMode = SNAP_NONE; 6057 } 6058 } 6059 if (mSnapScrollMode == SNAP_X) { 6060 // radical change means getting out of snap mode 6061 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6062 mSnapScrollMode = SNAP_NONE; 6063 } 6064 } 6065 } else { 6066 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6067 mSnapScrollMode = SNAP_X; 6068 mSnapPositive = deltaX > 0; 6069 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6070 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6071 mSnapScrollMode = SNAP_Y; 6072 mSnapPositive = deltaY > 0; 6073 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6074 } 6075 } 6076 if (mSnapScrollMode != SNAP_NONE) { 6077 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6078 deltaY = 0; 6079 } else { 6080 deltaX = 0; 6081 } 6082 } 6083 mLastTouchX = x; 6084 mLastTouchY = y; 6085 if ((deltaX | deltaY) != 0) { 6086 mHeldMotionless = MOTIONLESS_FALSE; 6087 } 6088 mLastTouchTime = eventTime; 6089 } 6090 6091 doDrag(deltaX, deltaY); 6092 6093 // Turn off scrollbars when dragging a layer. 6094 if (keepScrollBarsVisible && 6095 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6096 if (mHeldMotionless != MOTIONLESS_TRUE) { 6097 mHeldMotionless = MOTIONLESS_TRUE; 6098 invalidate(); 6099 } 6100 // keep the scrollbar on the screen even there is no scroll 6101 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6102 false); 6103 // return false to indicate that we can't pan out of the 6104 // view space 6105 return !done; 6106 } 6107 break; 6108 } 6109 case MotionEvent.ACTION_UP: { 6110 if (!isFocused()) requestFocus(); 6111 // pass the touch events from UI thread to WebCore thread 6112 if (shouldForwardTouchEvent()) { 6113 TouchEventData ted = new TouchEventData(); 6114 ted.mIds = new int[1]; 6115 ted.mIds[0] = ev.getPointerId(0); 6116 ted.mAction = action; 6117 ted.mPoints = new Point[1]; 6118 ted.mPoints[0] = new Point(contentX, contentY); 6119 ted.mPointsInView = new Point[1]; 6120 ted.mPointsInView[0] = new Point(x, y); 6121 ted.mMetaState = ev.getMetaState(); 6122 ted.mReprocess = mDeferTouchProcess; 6123 ted.mNativeLayer = mScrollingLayer; 6124 ted.mNativeLayerRect.set(mScrollingLayerRect); 6125 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6126 mTouchEventQueue.preQueueTouchEventData(ted); 6127 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6128 } 6129 mLastTouchUpTime = eventTime; 6130 if (mSentAutoScrollMessage) { 6131 mAutoScrollX = mAutoScrollY = 0; 6132 } 6133 switch (mTouchMode) { 6134 case TOUCH_DOUBLE_TAP_MODE: // double tap 6135 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6136 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6137 if (inFullScreenMode() || mDeferTouchProcess) { 6138 TouchEventData ted = new TouchEventData(); 6139 ted.mIds = new int[1]; 6140 ted.mIds[0] = ev.getPointerId(0); 6141 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6142 ted.mPoints = new Point[1]; 6143 ted.mPoints[0] = new Point(contentX, contentY); 6144 ted.mPointsInView = new Point[1]; 6145 ted.mPointsInView[0] = new Point(x, y); 6146 ted.mMetaState = ev.getMetaState(); 6147 ted.mReprocess = mDeferTouchProcess; 6148 ted.mNativeLayer = nativeScrollableLayer( 6149 contentX, contentY, 6150 ted.mNativeLayerRect, null); 6151 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6152 mTouchEventQueue.preQueueTouchEventData(ted); 6153 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6154 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6155 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6156 mTouchMode = TOUCH_DONE_MODE; 6157 } 6158 break; 6159 case TOUCH_INIT_MODE: // tap 6160 case TOUCH_SHORTPRESS_START_MODE: 6161 case TOUCH_SHORTPRESS_MODE: 6162 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6163 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6164 if (mConfirmMove) { 6165 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6166 " WebCore's response for touch down."); 6167 if (mPreventDefault != PREVENT_DEFAULT_YES 6168 && (computeMaxScrollX() > 0 6169 || computeMaxScrollY() > 0)) { 6170 // If the user has performed a very quick touch 6171 // sequence it is possible that we may get here 6172 // before WebCore has had a chance to process the events. 6173 // In this case, any call to preventDefault in the 6174 // JS touch handler will not have been executed yet. 6175 // Hence we will see both the UI (now) and WebCore 6176 // (when context switches) handling the event, 6177 // regardless of whether the web developer actually 6178 // doeses preventDefault in their touch handler. This 6179 // is the nature of our asynchronous touch model. 6180 6181 // we will not rewrite drag code here, but we 6182 // will try fling if it applies. 6183 WebViewCore.reducePriority(); 6184 // to get better performance, pause updating the 6185 // picture 6186 WebViewCore.pauseUpdatePicture(mWebViewCore); 6187 // fall through to TOUCH_DRAG_MODE 6188 } else { 6189 // WebKit may consume the touch event and modify 6190 // DOM. drawContentPicture() will be called with 6191 // animateSroll as true for better performance. 6192 // Force redraw in high-quality. 6193 invalidate(); 6194 break; 6195 } 6196 } else { 6197 if (mSelectingText) { 6198 // tapping on selection or controls does nothing 6199 if (!nativeHitSelection(contentX, contentY)) { 6200 selectionDone(); 6201 } 6202 break; 6203 } 6204 // only trigger double tap if the WebView is 6205 // scalable 6206 if (mTouchMode == TOUCH_INIT_MODE 6207 && (canZoomIn() || canZoomOut())) { 6208 mPrivateHandler.sendEmptyMessageDelayed( 6209 RELEASE_SINGLE_TAP, ViewConfiguration 6210 .getDoubleTapTimeout()); 6211 } else { 6212 doShortPress(); 6213 } 6214 break; 6215 } 6216 case TOUCH_DRAG_MODE: 6217 case TOUCH_DRAG_LAYER_MODE: 6218 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6219 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6220 // if the user waits a while w/o moving before the 6221 // up, we don't want to do a fling 6222 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6223 if (mVelocityTracker == null) { 6224 Log.e(LOGTAG, "Got null mVelocityTracker when " 6225 + "mPreventDefault = " 6226 + mPreventDefault 6227 + " mDeferTouchProcess = " 6228 + mDeferTouchProcess); 6229 } else { 6230 mVelocityTracker.addMovement(ev); 6231 } 6232 // set to MOTIONLESS_IGNORE so that it won't keep 6233 // removing and sending message in 6234 // drawCoreAndCursorRing() 6235 mHeldMotionless = MOTIONLESS_IGNORE; 6236 doFling(); 6237 break; 6238 } else { 6239 if (mScroller.springBack(mScrollX, mScrollY, 0, 6240 computeMaxScrollX(), 0, 6241 computeMaxScrollY())) { 6242 invalidate(); 6243 } 6244 } 6245 // redraw in high-quality, as we're done dragging 6246 mHeldMotionless = MOTIONLESS_TRUE; 6247 invalidate(); 6248 // fall through 6249 case TOUCH_DRAG_START_MODE: 6250 // TOUCH_DRAG_START_MODE should not happen for the real 6251 // device as we almost certain will get a MOVE. But this 6252 // is possible on emulator. 6253 mLastVelocity = 0; 6254 WebViewCore.resumePriority(); 6255 if (!mSelectingText) { 6256 WebViewCore.resumeUpdatePicture(mWebViewCore); 6257 } 6258 break; 6259 } 6260 stopTouch(); 6261 break; 6262 } 6263 case MotionEvent.ACTION_CANCEL: { 6264 if (mTouchMode == TOUCH_DRAG_MODE) { 6265 mScroller.springBack(mScrollX, mScrollY, 0, 6266 computeMaxScrollX(), 0, computeMaxScrollY()); 6267 invalidate(); 6268 } 6269 cancelWebCoreTouchEvent(contentX, contentY, false); 6270 cancelTouch(); 6271 break; 6272 } 6273 } 6274 return true; 6275 } 6276 6277 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6278 TouchEventData ted = new TouchEventData(); 6279 ted.mAction = ev.getActionMasked(); 6280 final int count = ev.getPointerCount(); 6281 ted.mIds = new int[count]; 6282 ted.mPoints = new Point[count]; 6283 ted.mPointsInView = new Point[count]; 6284 for (int c = 0; c < count; c++) { 6285 ted.mIds[c] = ev.getPointerId(c); 6286 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6287 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6288 ted.mPoints[c] = new Point(x, y); 6289 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6290 } 6291 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6292 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6293 ted.mActionIndex = ev.getActionIndex(); 6294 } 6295 ted.mMetaState = ev.getMetaState(); 6296 ted.mReprocess = true; 6297 ted.mMotionEvent = MotionEvent.obtain(ev); 6298 ted.mSequence = sequence; 6299 mTouchEventQueue.preQueueTouchEventData(ted); 6300 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6301 cancelLongPress(); 6302 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6303 } 6304 6305 void handleMultiTouchInWebView(MotionEvent ev) { 6306 if (DebugFlags.WEB_VIEW) { 6307 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6308 + " mTouchMode=" + mTouchMode 6309 + " numPointers=" + ev.getPointerCount() 6310 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6311 } 6312 6313 final ScaleGestureDetector detector = 6314 mZoomManager.getMultiTouchGestureDetector(); 6315 6316 // A few apps use WebView but don't instantiate gesture detector. 6317 // We don't need to support multi touch for them. 6318 if (detector == null) return; 6319 6320 float x = ev.getX(); 6321 float y = ev.getY(); 6322 6323 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6324 detector.onTouchEvent(ev); 6325 6326 if (detector.isInProgress()) { 6327 if (DebugFlags.WEB_VIEW) { 6328 Log.v(LOGTAG, "detector is in progress"); 6329 } 6330 mLastTouchTime = ev.getEventTime(); 6331 x = detector.getFocusX(); 6332 y = detector.getFocusY(); 6333 6334 cancelLongPress(); 6335 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6336 if (!mZoomManager.supportsPanDuringZoom()) { 6337 return; 6338 } 6339 mTouchMode = TOUCH_DRAG_MODE; 6340 if (mVelocityTracker == null) { 6341 mVelocityTracker = VelocityTracker.obtain(); 6342 } 6343 } 6344 } 6345 6346 int action = ev.getActionMasked(); 6347 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6348 cancelTouch(); 6349 action = MotionEvent.ACTION_DOWN; 6350 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6351 // set mLastTouchX/Y to the remaining points for multi-touch. 6352 mLastTouchX = Math.round(x); 6353 mLastTouchY = Math.round(y); 6354 } else if (action == MotionEvent.ACTION_MOVE) { 6355 // negative x or y indicate it is on the edge, skip it. 6356 if (x < 0 || y < 0) { 6357 return; 6358 } 6359 } 6360 6361 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6362 } 6363 6364 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6365 if (shouldForwardTouchEvent()) { 6366 if (removeEvents) { 6367 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6368 } 6369 TouchEventData ted = new TouchEventData(); 6370 ted.mIds = new int[1]; 6371 ted.mIds[0] = 0; 6372 ted.mPoints = new Point[1]; 6373 ted.mPoints[0] = new Point(x, y); 6374 ted.mPointsInView = new Point[1]; 6375 int viewX = contentToViewX(x) - mScrollX; 6376 int viewY = contentToViewY(y) - mScrollY; 6377 ted.mPointsInView[0] = new Point(viewX, viewY); 6378 ted.mAction = MotionEvent.ACTION_CANCEL; 6379 ted.mNativeLayer = nativeScrollableLayer( 6380 x, y, ted.mNativeLayerRect, null); 6381 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6382 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6383 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6384 6385 if (removeEvents) { 6386 // Mark this after sending the message above; we should 6387 // be willing to ignore the cancel event that we just sent. 6388 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6389 } 6390 } 6391 } 6392 6393 private void startTouch(float x, float y, long eventTime) { 6394 // Remember where the motion event started 6395 mStartTouchX = mLastTouchX = Math.round(x); 6396 mStartTouchY = mLastTouchY = Math.round(y); 6397 mLastTouchTime = eventTime; 6398 mVelocityTracker = VelocityTracker.obtain(); 6399 mSnapScrollMode = SNAP_NONE; 6400 } 6401 6402 private void startDrag() { 6403 WebViewCore.reducePriority(); 6404 // to get better performance, pause updating the picture 6405 WebViewCore.pauseUpdatePicture(mWebViewCore); 6406 if (!mDragFromTextInput) { 6407 nativeHideCursor(); 6408 } 6409 6410 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6411 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6412 mZoomManager.invokeZoomPicker(); 6413 } 6414 } 6415 6416 private void doDrag(int deltaX, int deltaY) { 6417 if ((deltaX | deltaY) != 0) { 6418 int oldX = mScrollX; 6419 int oldY = mScrollY; 6420 int rangeX = computeMaxScrollX(); 6421 int rangeY = computeMaxScrollY(); 6422 int overscrollDistance = mOverscrollDistance; 6423 6424 // Check for the original scrolling layer in case we change 6425 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6426 // reached the edge of a layer but mScrollingLayer will be non-zero 6427 // if we initiated the drag on a layer. 6428 if (mScrollingLayer != 0) { 6429 final int contentX = viewToContentDimension(deltaX); 6430 final int contentY = viewToContentDimension(deltaY); 6431 6432 // Check the scrolling bounds to see if we will actually do any 6433 // scrolling. The rectangle is in document coordinates. 6434 final int maxX = mScrollingLayerRect.right; 6435 final int maxY = mScrollingLayerRect.bottom; 6436 final int resultX = Math.max(0, 6437 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6438 final int resultY = Math.max(0, 6439 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6440 6441 if (resultX != mScrollingLayerRect.left || 6442 resultY != mScrollingLayerRect.top) { 6443 // In case we switched to dragging the page. 6444 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6445 deltaX = contentX; 6446 deltaY = contentY; 6447 oldX = mScrollingLayerRect.left; 6448 oldY = mScrollingLayerRect.top; 6449 rangeX = maxX; 6450 rangeY = maxY; 6451 } else { 6452 // Scroll the main page if we are not going to scroll the 6453 // layer. This does not reset mScrollingLayer in case the 6454 // user changes directions and the layer can scroll the 6455 // other way. 6456 mTouchMode = TOUCH_DRAG_MODE; 6457 } 6458 } 6459 6460 if (mOverScrollGlow != null) { 6461 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6462 } 6463 6464 overScrollBy(deltaX, deltaY, oldX, oldY, 6465 rangeX, rangeY, 6466 mOverscrollDistance, mOverscrollDistance, true); 6467 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6468 invalidate(); 6469 } 6470 } 6471 mZoomManager.keepZoomPickerVisible(); 6472 } 6473 6474 private void stopTouch() { 6475 // we also use mVelocityTracker == null to tell us that we are 6476 // not "moving around", so we can take the slower/prettier 6477 // mode in the drawing code 6478 if (mVelocityTracker != null) { 6479 mVelocityTracker.recycle(); 6480 mVelocityTracker = null; 6481 } 6482 6483 // Release any pulled glows 6484 if (mOverScrollGlow != null) { 6485 mOverScrollGlow.releaseAll(); 6486 } 6487 } 6488 6489 private void cancelTouch() { 6490 // we also use mVelocityTracker == null to tell us that we are 6491 // not "moving around", so we can take the slower/prettier 6492 // mode in the drawing code 6493 if (mVelocityTracker != null) { 6494 mVelocityTracker.recycle(); 6495 mVelocityTracker = null; 6496 } 6497 6498 if ((mTouchMode == TOUCH_DRAG_MODE 6499 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6500 WebViewCore.resumePriority(); 6501 WebViewCore.resumeUpdatePicture(mWebViewCore); 6502 } 6503 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6504 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6505 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6506 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6507 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6508 removeTouchHighlight(); 6509 } 6510 mHeldMotionless = MOTIONLESS_TRUE; 6511 mTouchMode = TOUCH_DONE_MODE; 6512 nativeHideCursor(); 6513 } 6514 6515 @Override 6516 public boolean onGenericMotionEvent(MotionEvent event) { 6517 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6518 switch (event.getAction()) { 6519 case MotionEvent.ACTION_SCROLL: { 6520 final float vscroll; 6521 final float hscroll; 6522 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6523 vscroll = 0; 6524 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6525 } else { 6526 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6527 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6528 } 6529 if (hscroll != 0 || vscroll != 0) { 6530 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6531 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6532 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6533 return true; 6534 } 6535 } 6536 } 6537 } 6538 } 6539 return super.onGenericMotionEvent(event); 6540 } 6541 6542 private long mTrackballFirstTime = 0; 6543 private long mTrackballLastTime = 0; 6544 private float mTrackballRemainsX = 0.0f; 6545 private float mTrackballRemainsY = 0.0f; 6546 private int mTrackballXMove = 0; 6547 private int mTrackballYMove = 0; 6548 private boolean mSelectingText = false; 6549 private boolean mSelectionStarted = false; 6550 private boolean mExtendSelection = false; 6551 private boolean mDrawSelectionPointer = false; 6552 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6553 private static final int TRACKBALL_TIMEOUT = 200; 6554 private static final int TRACKBALL_WAIT = 100; 6555 private static final int TRACKBALL_SCALE = 400; 6556 private static final int TRACKBALL_SCROLL_COUNT = 5; 6557 private static final int TRACKBALL_MOVE_COUNT = 10; 6558 private static final int TRACKBALL_MULTIPLIER = 3; 6559 private static final int SELECT_CURSOR_OFFSET = 16; 6560 private static final int SELECT_SCROLL = 5; 6561 private int mSelectX = 0; 6562 private int mSelectY = 0; 6563 private boolean mFocusSizeChanged = false; 6564 private boolean mTrackballDown = false; 6565 private long mTrackballUpTime = 0; 6566 private long mLastCursorTime = 0; 6567 private Rect mLastCursorBounds; 6568 6569 // Set by default; BrowserActivity clears to interpret trackball data 6570 // directly for movement. Currently, the framework only passes 6571 // arrow key events, not trackball events, from one child to the next 6572 private boolean mMapTrackballToArrowKeys = true; 6573 6574 private DrawData mDelaySetPicture; 6575 private DrawData mLoadedPicture; 6576 6577 public void setMapTrackballToArrowKeys(boolean setMap) { 6578 checkThread(); 6579 mMapTrackballToArrowKeys = setMap; 6580 } 6581 6582 void resetTrackballTime() { 6583 mTrackballLastTime = 0; 6584 } 6585 6586 @Override 6587 public boolean onTrackballEvent(MotionEvent ev) { 6588 long time = ev.getEventTime(); 6589 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6590 if (ev.getY() > 0) pageDown(true); 6591 if (ev.getY() < 0) pageUp(true); 6592 return true; 6593 } 6594 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6595 if (mSelectingText) { 6596 return true; // discard press if copy in progress 6597 } 6598 mTrackballDown = true; 6599 if (mNativeClass == 0) { 6600 return false; 6601 } 6602 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6603 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6604 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6605 nativeSelectBestAt(mLastCursorBounds); 6606 } 6607 if (DebugFlags.WEB_VIEW) { 6608 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6609 + " time=" + time 6610 + " mLastCursorTime=" + mLastCursorTime); 6611 } 6612 if (isInTouchMode()) requestFocusFromTouch(); 6613 return false; // let common code in onKeyDown at it 6614 } 6615 if (ev.getAction() == MotionEvent.ACTION_UP) { 6616 // LONG_PRESS_CENTER is set in common onKeyDown 6617 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6618 mTrackballDown = false; 6619 mTrackballUpTime = time; 6620 if (mSelectingText) { 6621 if (mExtendSelection) { 6622 copySelection(); 6623 selectionDone(); 6624 } else { 6625 mExtendSelection = true; 6626 nativeSetExtendSelection(); 6627 invalidate(); // draw the i-beam instead of the arrow 6628 } 6629 return true; // discard press if copy in progress 6630 } 6631 if (DebugFlags.WEB_VIEW) { 6632 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6633 + " time=" + time 6634 ); 6635 } 6636 return false; // let common code in onKeyUp at it 6637 } 6638 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6639 AccessibilityManager.getInstance(mContext).isEnabled()) { 6640 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6641 return false; 6642 } 6643 if (mTrackballDown) { 6644 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6645 return true; // discard move if trackball is down 6646 } 6647 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6648 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6649 return true; 6650 } 6651 // TODO: alternatively we can do panning as touch does 6652 switchOutDrawHistory(); 6653 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6654 if (DebugFlags.WEB_VIEW) { 6655 Log.v(LOGTAG, "onTrackballEvent time=" 6656 + time + " last=" + mTrackballLastTime); 6657 } 6658 mTrackballFirstTime = time; 6659 mTrackballXMove = mTrackballYMove = 0; 6660 } 6661 mTrackballLastTime = time; 6662 if (DebugFlags.WEB_VIEW) { 6663 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6664 } 6665 mTrackballRemainsX += ev.getX(); 6666 mTrackballRemainsY += ev.getY(); 6667 doTrackball(time, ev.getMetaState()); 6668 return true; 6669 } 6670 6671 void moveSelection(float xRate, float yRate) { 6672 if (mNativeClass == 0) 6673 return; 6674 int width = getViewWidth(); 6675 int height = getViewHeight(); 6676 mSelectX += xRate; 6677 mSelectY += yRate; 6678 int maxX = width + mScrollX; 6679 int maxY = height + mScrollY; 6680 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6681 , mSelectX)); 6682 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6683 , mSelectY)); 6684 if (DebugFlags.WEB_VIEW) { 6685 Log.v(LOGTAG, "moveSelection" 6686 + " mSelectX=" + mSelectX 6687 + " mSelectY=" + mSelectY 6688 + " mScrollX=" + mScrollX 6689 + " mScrollY=" + mScrollY 6690 + " xRate=" + xRate 6691 + " yRate=" + yRate 6692 ); 6693 } 6694 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6695 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6696 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6697 : 0; 6698 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6699 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6700 : 0; 6701 pinScrollBy(scrollX, scrollY, true, 0); 6702 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6703 requestRectangleOnScreen(select); 6704 invalidate(); 6705 } 6706 6707 private int scaleTrackballX(float xRate, int width) { 6708 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6709 int nextXMove = xMove; 6710 if (xMove > 0) { 6711 if (xMove > mTrackballXMove) { 6712 xMove -= mTrackballXMove; 6713 } 6714 } else if (xMove < mTrackballXMove) { 6715 xMove -= mTrackballXMove; 6716 } 6717 mTrackballXMove = nextXMove; 6718 return xMove; 6719 } 6720 6721 private int scaleTrackballY(float yRate, int height) { 6722 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6723 int nextYMove = yMove; 6724 if (yMove > 0) { 6725 if (yMove > mTrackballYMove) { 6726 yMove -= mTrackballYMove; 6727 } 6728 } else if (yMove < mTrackballYMove) { 6729 yMove -= mTrackballYMove; 6730 } 6731 mTrackballYMove = nextYMove; 6732 return yMove; 6733 } 6734 6735 private int keyCodeToSoundsEffect(int keyCode) { 6736 switch(keyCode) { 6737 case KeyEvent.KEYCODE_DPAD_UP: 6738 return SoundEffectConstants.NAVIGATION_UP; 6739 case KeyEvent.KEYCODE_DPAD_RIGHT: 6740 return SoundEffectConstants.NAVIGATION_RIGHT; 6741 case KeyEvent.KEYCODE_DPAD_DOWN: 6742 return SoundEffectConstants.NAVIGATION_DOWN; 6743 case KeyEvent.KEYCODE_DPAD_LEFT: 6744 return SoundEffectConstants.NAVIGATION_LEFT; 6745 } 6746 throw new IllegalArgumentException("keyCode must be one of " + 6747 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6748 "KEYCODE_DPAD_LEFT}."); 6749 } 6750 6751 private void doTrackball(long time, int metaState) { 6752 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6753 if (elapsed == 0) { 6754 elapsed = TRACKBALL_TIMEOUT; 6755 } 6756 float xRate = mTrackballRemainsX * 1000 / elapsed; 6757 float yRate = mTrackballRemainsY * 1000 / elapsed; 6758 int viewWidth = getViewWidth(); 6759 int viewHeight = getViewHeight(); 6760 if (mSelectingText) { 6761 if (!mDrawSelectionPointer) { 6762 // The last selection was made by touch, disabling drawing the 6763 // selection pointer. Allow the trackball to adjust the 6764 // position of the touch control. 6765 mSelectX = contentToViewX(nativeSelectionX()); 6766 mSelectY = contentToViewY(nativeSelectionY()); 6767 mDrawSelectionPointer = mExtendSelection = true; 6768 nativeSetExtendSelection(); 6769 } 6770 moveSelection(scaleTrackballX(xRate, viewWidth), 6771 scaleTrackballY(yRate, viewHeight)); 6772 mTrackballRemainsX = mTrackballRemainsY = 0; 6773 return; 6774 } 6775 float ax = Math.abs(xRate); 6776 float ay = Math.abs(yRate); 6777 float maxA = Math.max(ax, ay); 6778 if (DebugFlags.WEB_VIEW) { 6779 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6780 + " xRate=" + xRate 6781 + " yRate=" + yRate 6782 + " mTrackballRemainsX=" + mTrackballRemainsX 6783 + " mTrackballRemainsY=" + mTrackballRemainsY); 6784 } 6785 int width = mContentWidth - viewWidth; 6786 int height = mContentHeight - viewHeight; 6787 if (width < 0) width = 0; 6788 if (height < 0) height = 0; 6789 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6790 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6791 maxA = Math.max(ax, ay); 6792 int count = Math.max(0, (int) maxA); 6793 int oldScrollX = mScrollX; 6794 int oldScrollY = mScrollY; 6795 if (count > 0) { 6796 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6797 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6798 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6799 KeyEvent.KEYCODE_DPAD_RIGHT; 6800 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6801 if (DebugFlags.WEB_VIEW) { 6802 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6803 + " count=" + count 6804 + " mTrackballRemainsX=" + mTrackballRemainsX 6805 + " mTrackballRemainsY=" + mTrackballRemainsY); 6806 } 6807 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6808 for (int i = 0; i < count; i++) { 6809 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6810 } 6811 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6812 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6813 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6814 } 6815 mTrackballRemainsX = mTrackballRemainsY = 0; 6816 } 6817 if (count >= TRACKBALL_SCROLL_COUNT) { 6818 int xMove = scaleTrackballX(xRate, width); 6819 int yMove = scaleTrackballY(yRate, height); 6820 if (DebugFlags.WEB_VIEW) { 6821 Log.v(LOGTAG, "doTrackball pinScrollBy" 6822 + " count=" + count 6823 + " xMove=" + xMove + " yMove=" + yMove 6824 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6825 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6826 ); 6827 } 6828 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6829 xMove = 0; 6830 } 6831 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6832 yMove = 0; 6833 } 6834 if (xMove != 0 || yMove != 0) { 6835 pinScrollBy(xMove, yMove, true, 0); 6836 } 6837 } 6838 } 6839 6840 /** 6841 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6842 * @return Maximum horizontal scroll position within real content 6843 */ 6844 int computeMaxScrollX() { 6845 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6846 } 6847 6848 /** 6849 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6850 * @return Maximum vertical scroll position within real content 6851 */ 6852 int computeMaxScrollY() { 6853 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6854 - getViewHeightWithTitle(), 0); 6855 } 6856 6857 boolean updateScrollCoordinates(int x, int y) { 6858 int oldX = mScrollX; 6859 int oldY = mScrollY; 6860 mScrollX = x; 6861 mScrollY = y; 6862 if (oldX != mScrollX || oldY != mScrollY) { 6863 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6864 return true; 6865 } else { 6866 return false; 6867 } 6868 } 6869 6870 public void flingScroll(int vx, int vy) { 6871 checkThread(); 6872 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6873 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6874 invalidate(); 6875 } 6876 6877 private void doFling() { 6878 if (mVelocityTracker == null) { 6879 return; 6880 } 6881 int maxX = computeMaxScrollX(); 6882 int maxY = computeMaxScrollY(); 6883 6884 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6885 int vx = (int) mVelocityTracker.getXVelocity(); 6886 int vy = (int) mVelocityTracker.getYVelocity(); 6887 6888 int scrollX = mScrollX; 6889 int scrollY = mScrollY; 6890 int overscrollDistance = mOverscrollDistance; 6891 int overflingDistance = mOverflingDistance; 6892 6893 // Use the layer's scroll data if applicable. 6894 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6895 scrollX = mScrollingLayerRect.left; 6896 scrollY = mScrollingLayerRect.top; 6897 maxX = mScrollingLayerRect.right; 6898 maxY = mScrollingLayerRect.bottom; 6899 // No overscrolling for layers. 6900 overscrollDistance = overflingDistance = 0; 6901 } 6902 6903 if (mSnapScrollMode != SNAP_NONE) { 6904 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6905 vy = 0; 6906 } else { 6907 vx = 0; 6908 } 6909 } 6910 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6911 WebViewCore.resumePriority(); 6912 if (!mSelectingText) { 6913 WebViewCore.resumeUpdatePicture(mWebViewCore); 6914 } 6915 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6916 invalidate(); 6917 } 6918 return; 6919 } 6920 float currentVelocity = mScroller.getCurrVelocity(); 6921 float velocity = (float) Math.hypot(vx, vy); 6922 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6923 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6924 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6925 - Math.atan2(vy, vx))); 6926 final float circle = (float) (Math.PI) * 2.0f; 6927 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6928 vx += currentVelocity * mLastVelX / mLastVelocity; 6929 vy += currentVelocity * mLastVelY / mLastVelocity; 6930 velocity = (float) Math.hypot(vx, vy); 6931 if (DebugFlags.WEB_VIEW) { 6932 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6933 } 6934 } else if (DebugFlags.WEB_VIEW) { 6935 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6936 } 6937 } else if (DebugFlags.WEB_VIEW) { 6938 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6939 + " current=" + currentVelocity 6940 + " vx=" + vx + " vy=" + vy 6941 + " maxX=" + maxX + " maxY=" + maxY 6942 + " scrollX=" + scrollX + " scrollY=" + scrollY 6943 + " layer=" + mScrollingLayer); 6944 } 6945 6946 // Allow sloppy flings without overscrolling at the edges. 6947 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6948 vx = 0; 6949 } 6950 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6951 vy = 0; 6952 } 6953 6954 if (overscrollDistance < overflingDistance) { 6955 if ((vx > 0 && scrollX == -overscrollDistance) || 6956 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6957 vx = 0; 6958 } 6959 if ((vy > 0 && scrollY == -overscrollDistance) || 6960 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6961 vy = 0; 6962 } 6963 } 6964 6965 mLastVelX = vx; 6966 mLastVelY = vy; 6967 mLastVelocity = velocity; 6968 6969 // no horizontal overscroll if the content just fits 6970 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6971 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6972 // Duration is calculated based on velocity. With range boundaries and overscroll 6973 // we may not know how long the final animation will take. (Hence the deprecation 6974 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6975 // resumes during this effect we will take a performance hit. See computeScroll; 6976 // we resume webcore there when the animation is finished. 6977 final int time = mScroller.getDuration(); 6978 6979 // Suppress scrollbars for layer scrolling. 6980 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6981 awakenScrollBars(time); 6982 } 6983 6984 invalidate(); 6985 } 6986 6987 /** 6988 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6989 * in charge of installing this view to the view hierarchy. This view will 6990 * become visible when the user starts scrolling via touch and fade away if 6991 * the user does not interact with it. 6992 * <p/> 6993 * API version 3 introduces a built-in zoom mechanism that is shown 6994 * automatically by the MapView. This is the preferred approach for 6995 * showing the zoom UI. 6996 * 6997 * @deprecated The built-in zoom mechanism is preferred, see 6998 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6999 */ 7000 @Deprecated 7001 public View getZoomControls() { 7002 checkThread(); 7003 if (!getSettings().supportZoom()) { 7004 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7005 return null; 7006 } 7007 return mZoomManager.getExternalZoomPicker(); 7008 } 7009 7010 void dismissZoomControl() { 7011 mZoomManager.dismissZoomPicker(); 7012 } 7013 7014 float getDefaultZoomScale() { 7015 return mZoomManager.getDefaultScale(); 7016 } 7017 7018 /** 7019 * @return TRUE if the WebView can be zoomed in. 7020 */ 7021 public boolean canZoomIn() { 7022 checkThread(); 7023 return mZoomManager.canZoomIn(); 7024 } 7025 7026 /** 7027 * @return TRUE if the WebView can be zoomed out. 7028 */ 7029 public boolean canZoomOut() { 7030 checkThread(); 7031 return mZoomManager.canZoomOut(); 7032 } 7033 7034 /** 7035 * Perform zoom in in the webview 7036 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7037 */ 7038 public boolean zoomIn() { 7039 checkThread(); 7040 return mZoomManager.zoomIn(); 7041 } 7042 7043 /** 7044 * Perform zoom out in the webview 7045 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7046 */ 7047 public boolean zoomOut() { 7048 checkThread(); 7049 return mZoomManager.zoomOut(); 7050 } 7051 7052 private void updateSelection() { 7053 if (mNativeClass == 0) { 7054 return; 7055 } 7056 // mLastTouchX and mLastTouchY are the point in the current viewport 7057 int contentX = viewToContentX(mLastTouchX + mScrollX); 7058 int contentY = viewToContentY(mLastTouchY + mScrollY); 7059 int slop = viewToContentDimension(mNavSlop); 7060 Rect rect = new Rect(contentX - slop, contentY - slop, 7061 contentX + slop, contentY + slop); 7062 nativeSelectBestAt(rect); 7063 mInitialHitTestResult = hitTestResult(null); 7064 } 7065 7066 /** 7067 * Scroll the focused text field to match the WebTextView 7068 * @param xPercent New x position of the WebTextView from 0 to 1. 7069 */ 7070 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7071 if (!inEditingMode() || mWebViewCore == null) { 7072 return; 7073 } 7074 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7075 new Float(xPercent)); 7076 } 7077 7078 /** 7079 * Scroll the focused textarea vertically to match the WebTextView 7080 * @param y New y position of the WebTextView in view coordinates 7081 */ 7082 /* package */ void scrollFocusedTextInputY(int y) { 7083 if (!inEditingMode() || mWebViewCore == null) { 7084 return; 7085 } 7086 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7087 } 7088 7089 /** 7090 * Set our starting point and time for a drag from the WebTextView. 7091 */ 7092 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7093 if (!inEditingMode()) { 7094 return; 7095 } 7096 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7097 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7098 mLastTouchTime = eventTime; 7099 if (!mScroller.isFinished()) { 7100 abortAnimation(); 7101 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 7102 } 7103 mSnapScrollMode = SNAP_NONE; 7104 mVelocityTracker = VelocityTracker.obtain(); 7105 mTouchMode = TOUCH_DRAG_START_MODE; 7106 } 7107 7108 /** 7109 * Given a motion event from the WebTextView, set its location to our 7110 * coordinates, and handle the event. 7111 */ 7112 /*package*/ boolean textFieldDrag(MotionEvent event) { 7113 if (!inEditingMode()) { 7114 return false; 7115 } 7116 mDragFromTextInput = true; 7117 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7118 (float) (mWebTextView.getTop() - mScrollY)); 7119 boolean result = onTouchEvent(event); 7120 mDragFromTextInput = false; 7121 return result; 7122 } 7123 7124 /** 7125 * Due a touch up from a WebTextView. This will be handled by webkit to 7126 * change the selection. 7127 * @param event MotionEvent in the WebTextView's coordinates. 7128 */ 7129 /*package*/ void touchUpOnTextField(MotionEvent event) { 7130 if (!inEditingMode()) { 7131 return; 7132 } 7133 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7134 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7135 int slop = viewToContentDimension(mNavSlop); 7136 nativeMotionUp(x, y, slop); 7137 } 7138 7139 /** 7140 * Called when pressing the center key or trackball on a textfield. 7141 */ 7142 /*package*/ void centerKeyPressOnTextField() { 7143 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7144 nativeCursorNodePointer()); 7145 } 7146 7147 private void doShortPress() { 7148 if (mNativeClass == 0) { 7149 return; 7150 } 7151 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7152 return; 7153 } 7154 mTouchMode = TOUCH_DONE_MODE; 7155 switchOutDrawHistory(); 7156 // mLastTouchX and mLastTouchY are the point in the current viewport 7157 int contentX = viewToContentX(mLastTouchX + mScrollX); 7158 int contentY = viewToContentY(mLastTouchY + mScrollY); 7159 int slop = viewToContentDimension(mNavSlop); 7160 if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) { 7161 // set mTouchHighlightRequested to 0 to cause an immediate 7162 // drawing of the touch rings 7163 mTouchHighlightRequested = 0; 7164 invalidate(mTouchHighlightRegion.getBounds()); 7165 mPrivateHandler.postDelayed(new Runnable() { 7166 @Override 7167 public void run() { 7168 removeTouchHighlight(); 7169 } 7170 }, ViewConfiguration.getPressedStateDuration()); 7171 } 7172 if (getSettings().supportTouchOnly()) { 7173 removeTouchHighlight(); 7174 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7175 // use "0" as generation id to inform WebKit to use the same x/y as 7176 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7177 touchUpData.mMoveGeneration = 0; 7178 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7179 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7180 WebViewCore.MotionUpData motionUpData = new WebViewCore 7181 .MotionUpData(); 7182 motionUpData.mFrame = nativeCacheHitFramePointer(); 7183 motionUpData.mNode = nativeCacheHitNodePointer(); 7184 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7185 motionUpData.mX = contentX; 7186 motionUpData.mY = contentY; 7187 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7188 motionUpData); 7189 } else { 7190 doMotionUp(contentX, contentY); 7191 } 7192 } 7193 7194 private void doMotionUp(int contentX, int contentY) { 7195 int slop = viewToContentDimension(mNavSlop); 7196 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7197 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7198 } 7199 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7200 playSoundEffect(SoundEffectConstants.CLICK); 7201 } 7202 } 7203 7204 /** 7205 * Returns plugin bounds if x/y in content coordinates corresponds to a 7206 * plugin. Otherwise a NULL rectangle is returned. 7207 */ 7208 Rect getPluginBounds(int x, int y) { 7209 int slop = viewToContentDimension(mNavSlop); 7210 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7211 return nativeCacheHitNodeBounds(); 7212 } else { 7213 return null; 7214 } 7215 } 7216 7217 /* 7218 * Return true if the rect (e.g. plugin) is fully visible and maximized 7219 * inside the WebView. 7220 */ 7221 boolean isRectFitOnScreen(Rect rect) { 7222 final int rectWidth = rect.width(); 7223 final int rectHeight = rect.height(); 7224 final int viewWidth = getViewWidth(); 7225 final int viewHeight = getViewHeightWithTitle(); 7226 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7227 scale = mZoomManager.computeScaleWithLimits(scale); 7228 return !mZoomManager.willScaleTriggerZoom(scale) 7229 && contentToViewX(rect.left) >= mScrollX 7230 && contentToViewX(rect.right) <= mScrollX + viewWidth 7231 && contentToViewY(rect.top) >= mScrollY 7232 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7233 } 7234 7235 /* 7236 * Maximize and center the rectangle, specified in the document coordinate 7237 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7238 * animated scroll to center it. If the zoom needs to be changed, find the 7239 * zoom center and do a smooth zoom transition. The rect is in document 7240 * coordinates 7241 */ 7242 void centerFitRect(Rect rect) { 7243 final int rectWidth = rect.width(); 7244 final int rectHeight = rect.height(); 7245 final int viewWidth = getViewWidth(); 7246 final int viewHeight = getViewHeightWithTitle(); 7247 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7248 / rectHeight); 7249 scale = mZoomManager.computeScaleWithLimits(scale); 7250 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7251 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7252 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7253 true, 0); 7254 } else { 7255 float actualScale = mZoomManager.getScale(); 7256 float oldScreenX = rect.left * actualScale - mScrollX; 7257 float rectViewX = rect.left * scale; 7258 float rectViewWidth = rectWidth * scale; 7259 float newMaxWidth = mContentWidth * scale; 7260 float newScreenX = (viewWidth - rectViewWidth) / 2; 7261 // pin the newX to the WebView 7262 if (newScreenX > rectViewX) { 7263 newScreenX = rectViewX; 7264 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7265 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7266 } 7267 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7268 / (scale - actualScale); 7269 float oldScreenY = rect.top * actualScale + getTitleHeight() 7270 - mScrollY; 7271 float rectViewY = rect.top * scale + getTitleHeight(); 7272 float rectViewHeight = rectHeight * scale; 7273 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7274 float newScreenY = (viewHeight - rectViewHeight) / 2; 7275 // pin the newY to the WebView 7276 if (newScreenY > rectViewY) { 7277 newScreenY = rectViewY; 7278 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7279 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7280 } 7281 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7282 / (scale - actualScale); 7283 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7284 mZoomManager.startZoomAnimation(scale, false); 7285 } 7286 } 7287 7288 // Called by JNI to handle a touch on a node representing an email address, 7289 // address, or phone number 7290 private void overrideLoading(String url) { 7291 mCallbackProxy.uiOverrideUrlLoading(url); 7292 } 7293 7294 @Override 7295 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7296 // FIXME: If a subwindow is showing find, and the user touches the 7297 // background window, it can steal focus. 7298 if (mFindIsUp) return false; 7299 boolean result = false; 7300 if (inEditingMode()) { 7301 result = mWebTextView.requestFocus(direction, 7302 previouslyFocusedRect); 7303 } else { 7304 result = super.requestFocus(direction, previouslyFocusedRect); 7305 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7306 // For cases such as GMail, where we gain focus from a direction, 7307 // we want to move to the first available link. 7308 // FIXME: If there are no visible links, we may not want to 7309 int fakeKeyDirection = 0; 7310 switch(direction) { 7311 case View.FOCUS_UP: 7312 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7313 break; 7314 case View.FOCUS_DOWN: 7315 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7316 break; 7317 case View.FOCUS_LEFT: 7318 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7319 break; 7320 case View.FOCUS_RIGHT: 7321 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7322 break; 7323 default: 7324 return result; 7325 } 7326 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7327 navHandledKey(fakeKeyDirection, 1, true, 0); 7328 } 7329 } 7330 } 7331 return result; 7332 } 7333 7334 @Override 7335 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7336 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7337 7338 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7339 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7340 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7341 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7342 7343 int measuredHeight = heightSize; 7344 int measuredWidth = widthSize; 7345 7346 // Grab the content size from WebViewCore. 7347 int contentHeight = contentToViewDimension(mContentHeight); 7348 int contentWidth = contentToViewDimension(mContentWidth); 7349 7350// Log.d(LOGTAG, "------- measure " + heightMode); 7351 7352 if (heightMode != MeasureSpec.EXACTLY) { 7353 mHeightCanMeasure = true; 7354 measuredHeight = contentHeight; 7355 if (heightMode == MeasureSpec.AT_MOST) { 7356 // If we are larger than the AT_MOST height, then our height can 7357 // no longer be measured and we should scroll internally. 7358 if (measuredHeight > heightSize) { 7359 measuredHeight = heightSize; 7360 mHeightCanMeasure = false; 7361 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7362 } 7363 } 7364 } else { 7365 mHeightCanMeasure = false; 7366 } 7367 if (mNativeClass != 0) { 7368 nativeSetHeightCanMeasure(mHeightCanMeasure); 7369 } 7370 // For the width, always use the given size unless unspecified. 7371 if (widthMode == MeasureSpec.UNSPECIFIED) { 7372 mWidthCanMeasure = true; 7373 measuredWidth = contentWidth; 7374 } else { 7375 if (measuredWidth < contentWidth) { 7376 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7377 } 7378 mWidthCanMeasure = false; 7379 } 7380 7381 synchronized (this) { 7382 setMeasuredDimension(measuredWidth, measuredHeight); 7383 } 7384 } 7385 7386 @Override 7387 public boolean requestChildRectangleOnScreen(View child, 7388 Rect rect, 7389 boolean immediate) { 7390 if (mNativeClass == 0) { 7391 return false; 7392 } 7393 // don't scroll while in zoom animation. When it is done, we will adjust 7394 // the necessary components (e.g., WebTextView if it is in editing mode) 7395 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7396 return false; 7397 } 7398 7399 rect.offset(child.getLeft() - child.getScrollX(), 7400 child.getTop() - child.getScrollY()); 7401 7402 Rect content = new Rect(viewToContentX(mScrollX), 7403 viewToContentY(mScrollY), 7404 viewToContentX(mScrollX + getWidth() 7405 - getVerticalScrollbarWidth()), 7406 viewToContentY(mScrollY + getViewHeightWithTitle())); 7407 content = nativeSubtractLayers(content); 7408 int screenTop = contentToViewY(content.top); 7409 int screenBottom = contentToViewY(content.bottom); 7410 int height = screenBottom - screenTop; 7411 int scrollYDelta = 0; 7412 7413 if (rect.bottom > screenBottom) { 7414 int oneThirdOfScreenHeight = height / 3; 7415 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7416 // If the rectangle is too tall to fit in the bottom two thirds 7417 // of the screen, place it at the top. 7418 scrollYDelta = rect.top - screenTop; 7419 } else { 7420 // If the rectangle will still fit on screen, we want its 7421 // top to be in the top third of the screen. 7422 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7423 } 7424 } else if (rect.top < screenTop) { 7425 scrollYDelta = rect.top - screenTop; 7426 } 7427 7428 int screenLeft = contentToViewX(content.left); 7429 int screenRight = contentToViewX(content.right); 7430 int width = screenRight - screenLeft; 7431 int scrollXDelta = 0; 7432 7433 if (rect.right > screenRight && rect.left > screenLeft) { 7434 if (rect.width() > width) { 7435 scrollXDelta += (rect.left - screenLeft); 7436 } else { 7437 scrollXDelta += (rect.right - screenRight); 7438 } 7439 } else if (rect.left < screenLeft) { 7440 scrollXDelta -= (screenLeft - rect.left); 7441 } 7442 7443 if ((scrollYDelta | scrollXDelta) != 0) { 7444 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7445 } 7446 7447 return false; 7448 } 7449 7450 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7451 String replace, int newStart, int newEnd) { 7452 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7453 arg.mReplace = replace; 7454 arg.mNewStart = newStart; 7455 arg.mNewEnd = newEnd; 7456 mTextGeneration++; 7457 arg.mTextGeneration = mTextGeneration; 7458 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7459 } 7460 7461 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7462 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7463 arg.mEvent = event; 7464 arg.mCurrentText = currentText; 7465 // Increase our text generation number, and pass it to webcore thread 7466 mTextGeneration++; 7467 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7468 // WebKit's document state is not saved until about to leave the page. 7469 // To make sure the host application, like Browser, has the up to date 7470 // document state when it goes to background, we force to save the 7471 // document state. 7472 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7473 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7474 cursorData(), 1000); 7475 } 7476 7477 /** 7478 * @hide 7479 */ 7480 public synchronized WebViewCore getWebViewCore() { 7481 return mWebViewCore; 7482 } 7483 7484 /** 7485 * Used only by TouchEventQueue to store pending touch events. 7486 */ 7487 private static class QueuedTouch { 7488 long mSequence; 7489 MotionEvent mEvent; // Optional 7490 TouchEventData mTed; // Optional 7491 7492 QueuedTouch mNext; 7493 7494 public QueuedTouch set(TouchEventData ted) { 7495 mSequence = ted.mSequence; 7496 mTed = ted; 7497 mEvent = null; 7498 mNext = null; 7499 return this; 7500 } 7501 7502 public QueuedTouch set(MotionEvent ev, long sequence) { 7503 mEvent = MotionEvent.obtain(ev); 7504 mSequence = sequence; 7505 mTed = null; 7506 mNext = null; 7507 return this; 7508 } 7509 7510 public QueuedTouch add(QueuedTouch other) { 7511 if (other.mSequence < mSequence) { 7512 other.mNext = this; 7513 return other; 7514 } 7515 7516 QueuedTouch insertAt = this; 7517 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7518 insertAt = insertAt.mNext; 7519 } 7520 other.mNext = insertAt.mNext; 7521 insertAt.mNext = other; 7522 return this; 7523 } 7524 } 7525 7526 /** 7527 * WebView handles touch events asynchronously since some events must be passed to WebKit 7528 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7529 * of which path they take to ensure that no events are ever processed out of order 7530 * by WebView. 7531 */ 7532 private class TouchEventQueue { 7533 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7534 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7535 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7536 7537 // Events waiting to be processed. 7538 private QueuedTouch mTouchEventQueue; 7539 7540 // Known events that are waiting on a response before being enqueued. 7541 private QueuedTouch mPreQueue; 7542 7543 // Pool of QueuedTouch objects saved for later use. 7544 private QueuedTouch mQueuedTouchRecycleBin; 7545 private int mQueuedTouchRecycleCount; 7546 7547 private long mLastEventTime = Long.MAX_VALUE; 7548 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7549 7550 // milliseconds until we abandon hope of getting all of a previous gesture 7551 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7552 7553 private QueuedTouch obtainQueuedTouch() { 7554 if (mQueuedTouchRecycleBin != null) { 7555 QueuedTouch result = mQueuedTouchRecycleBin; 7556 mQueuedTouchRecycleBin = result.mNext; 7557 mQueuedTouchRecycleCount--; 7558 return result; 7559 } 7560 return new QueuedTouch(); 7561 } 7562 7563 /** 7564 * Allow events with any currently missing sequence numbers to be skipped in processing. 7565 */ 7566 public void ignoreCurrentlyMissingEvents() { 7567 mIgnoreUntilSequence = mNextTouchSequence; 7568 7569 // Run any events we have available and complete, pre-queued or otherwise. 7570 runQueuedAndPreQueuedEvents(); 7571 } 7572 7573 private void runQueuedAndPreQueuedEvents() { 7574 QueuedTouch qd = mPreQueue; 7575 boolean fromPreQueue = true; 7576 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7577 handleQueuedTouch(qd); 7578 QueuedTouch recycleMe = qd; 7579 if (fromPreQueue) { 7580 mPreQueue = qd.mNext; 7581 } else { 7582 mTouchEventQueue = qd.mNext; 7583 } 7584 recycleQueuedTouch(recycleMe); 7585 mLastHandledTouchSequence++; 7586 7587 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7588 long nextQueued = mTouchEventQueue != null ? 7589 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7590 fromPreQueue = nextPre < nextQueued; 7591 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7592 } 7593 } 7594 7595 /** 7596 * Add a TouchEventData to the pre-queue. 7597 * 7598 * An event in the pre-queue is an event that we know about that 7599 * has been sent to webkit, but that we haven't received back and 7600 * enqueued into the normal touch queue yet. If webkit ever times 7601 * out and we need to ignore currently missing events, we'll run 7602 * events from the pre-queue to patch the holes. 7603 * 7604 * @param ted TouchEventData to pre-queue 7605 */ 7606 public void preQueueTouchEventData(TouchEventData ted) { 7607 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7608 if (mPreQueue == null) { 7609 mPreQueue = newTouch; 7610 } else { 7611 QueuedTouch insertionPoint = mPreQueue; 7612 while (insertionPoint.mNext != null && 7613 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7614 insertionPoint = insertionPoint.mNext; 7615 } 7616 newTouch.mNext = insertionPoint.mNext; 7617 insertionPoint.mNext = newTouch; 7618 } 7619 } 7620 7621 private void recycleQueuedTouch(QueuedTouch qd) { 7622 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7623 qd.mNext = mQueuedTouchRecycleBin; 7624 mQueuedTouchRecycleBin = qd; 7625 mQueuedTouchRecycleCount++; 7626 } 7627 } 7628 7629 /** 7630 * Reset the touch event queue. This will dump any pending events 7631 * and reset the sequence numbering. 7632 */ 7633 public void reset() { 7634 mNextTouchSequence = Long.MIN_VALUE + 1; 7635 mLastHandledTouchSequence = Long.MIN_VALUE; 7636 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7637 while (mTouchEventQueue != null) { 7638 QueuedTouch recycleMe = mTouchEventQueue; 7639 mTouchEventQueue = mTouchEventQueue.mNext; 7640 recycleQueuedTouch(recycleMe); 7641 } 7642 while (mPreQueue != null) { 7643 QueuedTouch recycleMe = mPreQueue; 7644 mPreQueue = mPreQueue.mNext; 7645 recycleQueuedTouch(recycleMe); 7646 } 7647 } 7648 7649 /** 7650 * Return the next valid sequence number for tagging incoming touch events. 7651 * @return The next touch event sequence number 7652 */ 7653 public long nextTouchSequence() { 7654 return mNextTouchSequence++; 7655 } 7656 7657 /** 7658 * Enqueue a touch event in the form of TouchEventData. 7659 * The sequence number will be read from the mSequence field of the argument. 7660 * 7661 * If the touch event's sequence number is the next in line to be processed, it will 7662 * be handled before this method returns. Any subsequent events that have already 7663 * been queued will also be processed in their proper order. 7664 * 7665 * @param ted Touch data to be processed in order. 7666 * @return true if the event was processed before returning, false if it was just enqueued. 7667 */ 7668 public boolean enqueueTouchEvent(TouchEventData ted) { 7669 // Remove from the pre-queue if present 7670 QueuedTouch preQueue = mPreQueue; 7671 if (preQueue != null) { 7672 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7673 // if it was present in the pre-queue, and removed from the pre-queue itself. 7674 if (preQueue.mSequence == ted.mSequence) { 7675 mPreQueue = preQueue.mNext; 7676 } else { 7677 QueuedTouch prev = preQueue; 7678 preQueue = null; 7679 while (prev.mNext != null) { 7680 if (prev.mNext.mSequence == ted.mSequence) { 7681 preQueue = prev.mNext; 7682 prev.mNext = preQueue.mNext; 7683 break; 7684 } else { 7685 prev = prev.mNext; 7686 } 7687 } 7688 } 7689 } 7690 7691 if (ted.mSequence < mLastHandledTouchSequence) { 7692 // Stale event and we already moved on; drop it. (Should not be common.) 7693 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7694 " received from webcore; ignoring"); 7695 return false; 7696 } 7697 7698 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7699 return false; 7700 } 7701 7702 // dropStaleGestures above might have fast-forwarded us to 7703 // an event we have already. 7704 runNextQueuedEvents(); 7705 7706 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7707 if (preQueue != null) { 7708 recycleQueuedTouch(preQueue); 7709 preQueue = null; 7710 } 7711 handleQueuedTouchEventData(ted); 7712 7713 mLastHandledTouchSequence++; 7714 7715 // Do we have any more? Run them if so. 7716 runNextQueuedEvents(); 7717 } else { 7718 // Reuse the pre-queued object if we had it. 7719 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 7720 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7721 } 7722 return true; 7723 } 7724 7725 /** 7726 * Enqueue a touch event in the form of a MotionEvent from the framework. 7727 * 7728 * If the touch event's sequence number is the next in line to be processed, it will 7729 * be handled before this method returns. Any subsequent events that have already 7730 * been queued will also be processed in their proper order. 7731 * 7732 * @param ev MotionEvent to be processed in order 7733 */ 7734 public void enqueueTouchEvent(MotionEvent ev) { 7735 final long sequence = nextTouchSequence(); 7736 7737 if (dropStaleGestures(ev, sequence)) { 7738 return; 7739 } 7740 7741 // dropStaleGestures above might have fast-forwarded us to 7742 // an event we have already. 7743 runNextQueuedEvents(); 7744 7745 if (mLastHandledTouchSequence + 1 == sequence) { 7746 handleQueuedMotionEvent(ev); 7747 7748 mLastHandledTouchSequence++; 7749 7750 // Do we have any more? Run them if so. 7751 runNextQueuedEvents(); 7752 } else { 7753 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7754 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7755 } 7756 } 7757 7758 private void runNextQueuedEvents() { 7759 QueuedTouch qd = mTouchEventQueue; 7760 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7761 handleQueuedTouch(qd); 7762 QueuedTouch recycleMe = qd; 7763 qd = qd.mNext; 7764 recycleQueuedTouch(recycleMe); 7765 mLastHandledTouchSequence++; 7766 } 7767 mTouchEventQueue = qd; 7768 } 7769 7770 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7771 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7772 // This is to make sure that we don't attempt to process a tap 7773 // or long press when webkit takes too long to get back to us. 7774 // The movement will be properly confirmed when we process the 7775 // enqueued event later. 7776 final int dx = Math.round(ev.getX()) - mLastTouchX; 7777 final int dy = Math.round(ev.getY()) - mLastTouchY; 7778 if (dx * dx + dy * dy > mTouchSlopSquare) { 7779 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7780 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7781 } 7782 } 7783 7784 if (mTouchEventQueue == null) { 7785 return sequence <= mLastHandledTouchSequence; 7786 } 7787 7788 // If we have a new down event and it's been a while since the last event 7789 // we saw, catch up as best we can and keep going. 7790 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 7791 long eventTime = ev.getEventTime(); 7792 long lastHandledEventTime = mLastEventTime; 7793 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 7794 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7795 "Catching up."); 7796 runQueuedAndPreQueuedEvents(); 7797 7798 // Drop leftovers that we truly don't have. 7799 QueuedTouch qd = mTouchEventQueue; 7800 while (qd != null && qd.mSequence < sequence) { 7801 QueuedTouch recycleMe = qd; 7802 qd = qd.mNext; 7803 recycleQueuedTouch(recycleMe); 7804 } 7805 mTouchEventQueue = qd; 7806 mLastHandledTouchSequence = sequence - 1; 7807 } 7808 } 7809 7810 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 7811 QueuedTouch qd = mTouchEventQueue; 7812 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7813 QueuedTouch recycleMe = qd; 7814 qd = qd.mNext; 7815 recycleQueuedTouch(recycleMe); 7816 } 7817 mTouchEventQueue = qd; 7818 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 7819 } 7820 7821 if (mPreQueue != null) { 7822 // Drop stale prequeued events 7823 QueuedTouch qd = mPreQueue; 7824 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7825 QueuedTouch recycleMe = qd; 7826 qd = qd.mNext; 7827 recycleQueuedTouch(recycleMe); 7828 } 7829 mPreQueue = qd; 7830 } 7831 7832 return sequence <= mLastHandledTouchSequence; 7833 } 7834 7835 private void handleQueuedTouch(QueuedTouch qt) { 7836 if (qt.mTed != null) { 7837 handleQueuedTouchEventData(qt.mTed); 7838 } else { 7839 handleQueuedMotionEvent(qt.mEvent); 7840 qt.mEvent.recycle(); 7841 } 7842 } 7843 7844 private void handleQueuedMotionEvent(MotionEvent ev) { 7845 mLastEventTime = ev.getEventTime(); 7846 int action = ev.getActionMasked(); 7847 if (ev.getPointerCount() > 1) { // Multi-touch 7848 handleMultiTouchInWebView(ev); 7849 } else { 7850 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 7851 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 7852 // ScaleGestureDetector needs a consistent event stream to operate properly. 7853 // It won't take any action with fewer than two pointers, but it needs to 7854 // update internal bookkeeping state. 7855 detector.onTouchEvent(ev); 7856 } 7857 7858 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 7859 } 7860 } 7861 7862 private void handleQueuedTouchEventData(TouchEventData ted) { 7863 if (ted.mMotionEvent != null) { 7864 mLastEventTime = ted.mMotionEvent.getEventTime(); 7865 } 7866 if (!ted.mReprocess) { 7867 if (ted.mAction == MotionEvent.ACTION_DOWN 7868 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7869 // if prevent default is called from WebCore, UI 7870 // will not handle the rest of the touch events any 7871 // more. 7872 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7873 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7874 } else if (ted.mAction == MotionEvent.ACTION_MOVE 7875 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7876 // the return for the first ACTION_MOVE will decide 7877 // whether UI will handle touch or not. Currently no 7878 // support for alternating prevent default 7879 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7880 : PREVENT_DEFAULT_NO; 7881 } 7882 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7883 mTouchHighlightRegion.setEmpty(); 7884 } 7885 } else { 7886 if (ted.mPoints.length > 1) { // multi-touch 7887 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 7888 mPreventDefault = PREVENT_DEFAULT_NO; 7889 handleMultiTouchInWebView(ted.mMotionEvent); 7890 } else { 7891 mPreventDefault = PREVENT_DEFAULT_YES; 7892 } 7893 return; 7894 } 7895 7896 // prevent default is not called in WebCore, so the 7897 // message needs to be reprocessed in UI 7898 if (!ted.mNativeResult) { 7899 // Following is for single touch. 7900 switch (ted.mAction) { 7901 case MotionEvent.ACTION_DOWN: 7902 mLastDeferTouchX = ted.mPointsInView[0].x; 7903 mLastDeferTouchY = ted.mPointsInView[0].y; 7904 mDeferTouchMode = TOUCH_INIT_MODE; 7905 break; 7906 case MotionEvent.ACTION_MOVE: { 7907 // no snapping in defer process 7908 int x = ted.mPointsInView[0].x; 7909 int y = ted.mPointsInView[0].y; 7910 7911 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7912 mDeferTouchMode = TOUCH_DRAG_MODE; 7913 mLastDeferTouchX = x; 7914 mLastDeferTouchY = y; 7915 startScrollingLayer(x, y); 7916 startDrag(); 7917 } 7918 int deltaX = pinLocX((int) (mScrollX 7919 + mLastDeferTouchX - x)) 7920 - mScrollX; 7921 int deltaY = pinLocY((int) (mScrollY 7922 + mLastDeferTouchY - y)) 7923 - mScrollY; 7924 doDrag(deltaX, deltaY); 7925 if (deltaX != 0) mLastDeferTouchX = x; 7926 if (deltaY != 0) mLastDeferTouchY = y; 7927 break; 7928 } 7929 case MotionEvent.ACTION_UP: 7930 case MotionEvent.ACTION_CANCEL: 7931 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7932 // no fling in defer process 7933 mScroller.springBack(mScrollX, mScrollY, 0, 7934 computeMaxScrollX(), 0, 7935 computeMaxScrollY()); 7936 invalidate(); 7937 WebViewCore.resumePriority(); 7938 WebViewCore.resumeUpdatePicture(mWebViewCore); 7939 } 7940 mDeferTouchMode = TOUCH_DONE_MODE; 7941 break; 7942 case WebViewCore.ACTION_DOUBLETAP: 7943 // doDoubleTap() needs mLastTouchX/Y as anchor 7944 mLastDeferTouchX = ted.mPointsInView[0].x; 7945 mLastDeferTouchY = ted.mPointsInView[0].y; 7946 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7947 mDeferTouchMode = TOUCH_DONE_MODE; 7948 break; 7949 case WebViewCore.ACTION_LONGPRESS: 7950 HitTestResult hitTest = getHitTestResult(); 7951 if (hitTest != null && hitTest.mType 7952 != HitTestResult.UNKNOWN_TYPE) { 7953 performLongClick(); 7954 } 7955 mDeferTouchMode = TOUCH_DONE_MODE; 7956 break; 7957 } 7958 } 7959 } 7960 } 7961 } 7962 7963 //------------------------------------------------------------------------- 7964 // Methods can be called from a separate thread, like WebViewCore 7965 // If it needs to call the View system, it has to send message. 7966 //------------------------------------------------------------------------- 7967 7968 /** 7969 * General handler to receive message coming from webkit thread 7970 */ 7971 class PrivateHandler extends Handler { 7972 @Override 7973 public void handleMessage(Message msg) { 7974 // exclude INVAL_RECT_MSG_ID since it is frequently output 7975 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7976 if (msg.what >= FIRST_PRIVATE_MSG_ID 7977 && msg.what <= LAST_PRIVATE_MSG_ID) { 7978 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7979 - FIRST_PRIVATE_MSG_ID]); 7980 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7981 && msg.what <= LAST_PACKAGE_MSG_ID) { 7982 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7983 - FIRST_PACKAGE_MSG_ID]); 7984 } else { 7985 Log.v(LOGTAG, Integer.toString(msg.what)); 7986 } 7987 } 7988 if (mWebViewCore == null) { 7989 // after WebView's destroy() is called, skip handling messages. 7990 return; 7991 } 7992 if (mBlockWebkitViewMessages 7993 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 7994 // Blocking messages from webkit 7995 return; 7996 } 7997 switch (msg.what) { 7998 case REMEMBER_PASSWORD: { 7999 mDatabase.setUsernamePassword( 8000 msg.getData().getString("host"), 8001 msg.getData().getString("username"), 8002 msg.getData().getString("password")); 8003 ((Message) msg.obj).sendToTarget(); 8004 break; 8005 } 8006 case NEVER_REMEMBER_PASSWORD: { 8007 mDatabase.setUsernamePassword( 8008 msg.getData().getString("host"), null, null); 8009 ((Message) msg.obj).sendToTarget(); 8010 break; 8011 } 8012 case PREVENT_DEFAULT_TIMEOUT: { 8013 // if timeout happens, cancel it so that it won't block UI 8014 // to continue handling touch events 8015 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8016 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8017 || (msg.arg1 == MotionEvent.ACTION_MOVE 8018 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8019 cancelWebCoreTouchEvent( 8020 viewToContentX(mLastTouchX + mScrollX), 8021 viewToContentY(mLastTouchY + mScrollY), 8022 true); 8023 } 8024 break; 8025 } 8026 case SCROLL_SELECT_TEXT: { 8027 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8028 mSentAutoScrollMessage = false; 8029 break; 8030 } 8031 if (mScrollingLayer == 0) { 8032 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8033 } else { 8034 mScrollingLayerRect.left += mAutoScrollX; 8035 mScrollingLayerRect.top += mAutoScrollY; 8036 nativeScrollLayer(mScrollingLayer, 8037 mScrollingLayerRect.left, 8038 mScrollingLayerRect.top); 8039 invalidate(); 8040 } 8041 sendEmptyMessageDelayed( 8042 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8043 break; 8044 } 8045 case SWITCH_TO_SHORTPRESS: { 8046 mInitialHitTestResult = null; // set by updateSelection() 8047 if (mTouchMode == TOUCH_INIT_MODE) { 8048 if (!getSettings().supportTouchOnly() 8049 && mPreventDefault != PREVENT_DEFAULT_YES) { 8050 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8051 updateSelection(); 8052 } else { 8053 // set to TOUCH_SHORTPRESS_MODE so that it won't 8054 // trigger double tap any more 8055 mTouchMode = TOUCH_SHORTPRESS_MODE; 8056 } 8057 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8058 mTouchMode = TOUCH_DONE_MODE; 8059 } 8060 break; 8061 } 8062 case SWITCH_TO_LONGPRESS: { 8063 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 8064 removeTouchHighlight(); 8065 } 8066 if (inFullScreenMode() || mDeferTouchProcess) { 8067 TouchEventData ted = new TouchEventData(); 8068 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8069 ted.mIds = new int[1]; 8070 ted.mIds[0] = 0; 8071 ted.mPoints = new Point[1]; 8072 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8073 viewToContentY(mLastTouchY + mScrollY)); 8074 ted.mPointsInView = new Point[1]; 8075 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8076 // metaState for long press is tricky. Should it be the 8077 // state when the press started or when the press was 8078 // released? Or some intermediary key state? For 8079 // simplicity for now, we don't set it. 8080 ted.mMetaState = 0; 8081 ted.mReprocess = mDeferTouchProcess; 8082 ted.mNativeLayer = nativeScrollableLayer( 8083 ted.mPoints[0].x, ted.mPoints[0].y, 8084 ted.mNativeLayerRect, null); 8085 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8086 mTouchEventQueue.preQueueTouchEventData(ted); 8087 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8088 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8089 mTouchMode = TOUCH_DONE_MODE; 8090 performLongClick(); 8091 } 8092 break; 8093 } 8094 case RELEASE_SINGLE_TAP: { 8095 doShortPress(); 8096 break; 8097 } 8098 case SCROLL_TO_MSG_ID: { 8099 // arg1 = animate, arg2 = onlyIfImeIsShowing 8100 // obj = Point(x, y) 8101 if (msg.arg2 == 1) { 8102 // This scroll is intended to bring the textfield into 8103 // view, but is only necessary if the IME is showing 8104 InputMethodManager imm = InputMethodManager.peekInstance(); 8105 if (imm == null || !imm.isAcceptingText() 8106 || (!imm.isActive(WebView.this) && (!inEditingMode() 8107 || !imm.isActive(mWebTextView)))) { 8108 break; 8109 } 8110 } 8111 final Point p = (Point) msg.obj; 8112 if (msg.arg1 == 1) { 8113 spawnContentScrollTo(p.x, p.y); 8114 } else { 8115 setContentScrollTo(p.x, p.y); 8116 } 8117 break; 8118 } 8119 case UPDATE_ZOOM_RANGE: { 8120 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8121 // mScrollX contains the new minPrefWidth 8122 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8123 break; 8124 } 8125 case REPLACE_BASE_CONTENT: { 8126 nativeReplaceBaseContent(msg.arg1); 8127 break; 8128 } 8129 case NEW_PICTURE_MSG_ID: { 8130 // called for new content 8131 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8132 setNewPicture(draw, true); 8133 break; 8134 } 8135 case WEBCORE_INITIALIZED_MSG_ID: 8136 // nativeCreate sets mNativeClass to a non-zero value 8137 String drawableDir = BrowserFrame.getRawResFilename( 8138 BrowserFrame.DRAWABLEDIR, mContext); 8139 nativeCreate(msg.arg1, drawableDir); 8140 if (mDelaySetPicture != null) { 8141 setNewPicture(mDelaySetPicture, true); 8142 mDelaySetPicture = null; 8143 } 8144 break; 8145 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8146 // Make sure that the textfield is currently focused 8147 // and representing the same node as the pointer. 8148 if (inEditingMode() && 8149 mWebTextView.isSameTextField(msg.arg1)) { 8150 if (msg.arg2 == mTextGeneration) { 8151 String text = (String) msg.obj; 8152 if (null == text) { 8153 text = ""; 8154 } 8155 mWebTextView.setTextAndKeepSelection(text); 8156 } 8157 } 8158 break; 8159 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8160 displaySoftKeyboard(true); 8161 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8162 case UPDATE_TEXT_SELECTION_MSG_ID: 8163 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8164 (WebViewCore.TextSelectionData) msg.obj); 8165 break; 8166 case FORM_DID_BLUR: 8167 if (inEditingMode() 8168 && mWebTextView.isSameTextField(msg.arg1)) { 8169 hideSoftKeyboard(); 8170 } 8171 break; 8172 case RETURN_LABEL: 8173 if (inEditingMode() 8174 && mWebTextView.isSameTextField(msg.arg1)) { 8175 mWebTextView.setHint((String) msg.obj); 8176 InputMethodManager imm 8177 = InputMethodManager.peekInstance(); 8178 // The hint is propagated to the IME in 8179 // onCreateInputConnection. If the IME is already 8180 // active, restart it so that its hint text is updated. 8181 if (imm != null && imm.isActive(mWebTextView)) { 8182 imm.restartInput(mWebTextView); 8183 } 8184 } 8185 break; 8186 case UNHANDLED_NAV_KEY: 8187 navHandledKey(msg.arg1, 1, false, 0); 8188 break; 8189 case UPDATE_TEXT_ENTRY_MSG_ID: 8190 // this is sent after finishing resize in WebViewCore. Make 8191 // sure the text edit box is still on the screen. 8192 if (inEditingMode() && nativeCursorIsTextInput()) { 8193 rebuildWebTextView(); 8194 } 8195 break; 8196 case CLEAR_TEXT_ENTRY: 8197 clearTextEntry(); 8198 break; 8199 case INVAL_RECT_MSG_ID: { 8200 Rect r = (Rect)msg.obj; 8201 if (r == null) { 8202 invalidate(); 8203 } else { 8204 // we need to scale r from content into view coords, 8205 // which viewInvalidate() does for us 8206 viewInvalidate(r.left, r.top, r.right, r.bottom); 8207 } 8208 break; 8209 } 8210 case REQUEST_FORM_DATA: 8211 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8212 if (mWebTextView.isSameTextField(msg.arg1)) { 8213 mWebTextView.setAdapterCustom(adapter); 8214 } 8215 break; 8216 case RESUME_WEBCORE_PRIORITY: 8217 WebViewCore.resumePriority(); 8218 WebViewCore.resumeUpdatePicture(mWebViewCore); 8219 break; 8220 8221 case LONG_PRESS_CENTER: 8222 // as this is shared by keydown and trackballdown, reset all 8223 // the states 8224 mGotCenterDown = false; 8225 mTrackballDown = false; 8226 performLongClick(); 8227 break; 8228 8229 case WEBCORE_NEED_TOUCH_EVENTS: 8230 mForwardTouchEvents = (msg.arg1 != 0); 8231 break; 8232 8233 case PREVENT_TOUCH_ID: 8234 if (inFullScreenMode()) { 8235 break; 8236 } 8237 TouchEventData ted = (TouchEventData) msg.obj; 8238 8239 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8240 // WebCore is responding to us; remove pending timeout. 8241 // It will be re-posted when needed. 8242 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8243 } 8244 break; 8245 8246 case REQUEST_KEYBOARD: 8247 if (msg.arg1 == 0) { 8248 hideSoftKeyboard(); 8249 } else { 8250 displaySoftKeyboard(false); 8251 } 8252 break; 8253 8254 case FIND_AGAIN: 8255 // Ignore if find has been dismissed. 8256 if (mFindIsUp && mFindCallback != null) { 8257 mFindCallback.findAll(); 8258 } 8259 break; 8260 8261 case DRAG_HELD_MOTIONLESS: 8262 mHeldMotionless = MOTIONLESS_TRUE; 8263 invalidate(); 8264 // fall through to keep scrollbars awake 8265 8266 case AWAKEN_SCROLL_BARS: 8267 if (mTouchMode == TOUCH_DRAG_MODE 8268 && mHeldMotionless == MOTIONLESS_TRUE) { 8269 awakenScrollBars(ViewConfiguration 8270 .getScrollDefaultDelay(), false); 8271 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8272 .obtainMessage(AWAKEN_SCROLL_BARS), 8273 ViewConfiguration.getScrollDefaultDelay()); 8274 } 8275 break; 8276 8277 case DO_MOTION_UP: 8278 doMotionUp(msg.arg1, msg.arg2); 8279 break; 8280 8281 case SCREEN_ON: 8282 setKeepScreenOn(msg.arg1 == 1); 8283 break; 8284 8285 case ENTER_FULLSCREEN_VIDEO: 8286 int layerId = msg.arg1; 8287 8288 String url = (String) msg.obj; 8289 if (mHTML5VideoViewProxy != null) { 8290 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8291 } 8292 break; 8293 8294 case SHOW_FULLSCREEN: { 8295 View view = (View) msg.obj; 8296 int orientation = msg.arg1; 8297 int npp = msg.arg2; 8298 8299 if (inFullScreenMode()) { 8300 Log.w(LOGTAG, "Should not have another full screen."); 8301 dismissFullScreenMode(); 8302 } 8303 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8304 mFullScreenHolder.setContentView(view); 8305 mFullScreenHolder.show(); 8306 8307 break; 8308 } 8309 case HIDE_FULLSCREEN: 8310 dismissFullScreenMode(); 8311 break; 8312 8313 case DOM_FOCUS_CHANGED: 8314 if (inEditingMode()) { 8315 nativeClearCursor(); 8316 rebuildWebTextView(); 8317 } 8318 break; 8319 8320 case SHOW_RECT_MSG_ID: { 8321 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8322 int x = mScrollX; 8323 int left = contentToViewX(data.mLeft); 8324 int width = contentToViewDimension(data.mWidth); 8325 int maxWidth = contentToViewDimension(data.mContentWidth); 8326 int viewWidth = getViewWidth(); 8327 if (width < viewWidth) { 8328 // center align 8329 x += left + width / 2 - mScrollX - viewWidth / 2; 8330 } else { 8331 x += (int) (left + data.mXPercentInDoc * width 8332 - mScrollX - data.mXPercentInView * viewWidth); 8333 } 8334 if (DebugFlags.WEB_VIEW) { 8335 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8336 width + ",maxWidth=" + maxWidth + 8337 ",viewWidth=" + viewWidth + ",x=" 8338 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8339 ",xPercentInView=" + data.mXPercentInView+ ")"); 8340 } 8341 // use the passing content width to cap x as the current 8342 // mContentWidth may not be updated yet 8343 x = Math.max(0, 8344 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8345 int top = contentToViewY(data.mTop); 8346 int height = contentToViewDimension(data.mHeight); 8347 int maxHeight = contentToViewDimension(data.mContentHeight); 8348 int viewHeight = getViewHeight(); 8349 int y = (int) (top + data.mYPercentInDoc * height - 8350 data.mYPercentInView * viewHeight); 8351 if (DebugFlags.WEB_VIEW) { 8352 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8353 height + ",maxHeight=" + maxHeight + 8354 ",viewHeight=" + viewHeight + ",y=" 8355 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8356 ",yPercentInView=" + data.mYPercentInView+ ")"); 8357 } 8358 // use the passing content height to cap y as the current 8359 // mContentHeight may not be updated yet 8360 y = Math.max(0, 8361 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8362 // We need to take into account the visible title height 8363 // when scrolling since y is an absolute view position. 8364 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8365 scrollTo(x, y); 8366 } 8367 break; 8368 8369 case CENTER_FIT_RECT: 8370 centerFitRect((Rect)msg.obj); 8371 break; 8372 8373 case SET_SCROLLBAR_MODES: 8374 mHorizontalScrollBarMode = msg.arg1; 8375 mVerticalScrollBarMode = msg.arg2; 8376 break; 8377 8378 case SELECTION_STRING_CHANGED: 8379 if (mAccessibilityInjector != null) { 8380 String selectionString = (String) msg.obj; 8381 mAccessibilityInjector.onSelectionStringChange(selectionString); 8382 } 8383 break; 8384 8385 case SET_TOUCH_HIGHLIGHT_RECTS: 8386 @SuppressWarnings("unchecked") 8387 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8388 setTouchHighlightRects(rects); 8389 break; 8390 8391 case SAVE_WEBARCHIVE_FINISHED: 8392 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8393 if (saveMessage.mCallback != null) { 8394 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8395 } 8396 break; 8397 8398 case SET_AUTOFILLABLE: 8399 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8400 if (mWebTextView != null) { 8401 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8402 rebuildWebTextView(); 8403 } 8404 break; 8405 8406 case AUTOFILL_COMPLETE: 8407 if (mWebTextView != null) { 8408 // Clear the WebTextView adapter when AutoFill finishes 8409 // so that the drop down gets cleared. 8410 mWebTextView.setAdapterCustom(null); 8411 } 8412 break; 8413 8414 case SELECT_AT: 8415 nativeSelectAt(msg.arg1, msg.arg2); 8416 break; 8417 8418 default: 8419 super.handleMessage(msg); 8420 break; 8421 } 8422 } 8423 } 8424 8425 private void setTouchHighlightRects(ArrayList<Rect> rects) { 8426 invalidate(mTouchHighlightRegion.getBounds()); 8427 mTouchHighlightRegion.setEmpty(); 8428 if (rects != null) { 8429 for (Rect rect : rects) { 8430 Rect viewRect = contentToViewRect(rect); 8431 // some sites, like stories in nytimes.com, set 8432 // mouse event handler in the top div. It is not 8433 // user friendly to highlight the div if it covers 8434 // more than half of the screen. 8435 if (viewRect.width() < getWidth() >> 1 8436 || viewRect.height() < getHeight() >> 1) { 8437 mTouchHighlightRegion.union(viewRect); 8438 } else { 8439 Log.w(LOGTAG, "Skip the huge selection rect:" 8440 + viewRect); 8441 } 8442 } 8443 invalidate(mTouchHighlightRegion.getBounds()); 8444 } 8445 } 8446 8447 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8448 * acceleration) */ 8449 protected void pageSwapCallback() { 8450 if (inEditingMode()) { 8451 didUpdateWebTextViewDimensions(ANYWHERE); 8452 } 8453 } 8454 8455 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8456 if (mNativeClass == 0) { 8457 if (mDelaySetPicture != null) { 8458 throw new IllegalStateException("Tried to setNewPicture with" 8459 + " a delay picture already set! (memory leak)"); 8460 } 8461 // Not initialized yet, delay set 8462 mDelaySetPicture = draw; 8463 return; 8464 } 8465 WebViewCore.ViewState viewState = draw.mViewState; 8466 boolean isPictureAfterFirstLayout = viewState != null; 8467 8468 if (updateBaseLayer) { 8469 // Request a callback on pageSwap (to reposition the webtextview) 8470 boolean registerPageSwapCallback = 8471 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8472 8473 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8474 getSettings().getShowVisualIndicator(), 8475 isPictureAfterFirstLayout, registerPageSwapCallback); 8476 } 8477 final Point viewSize = draw.mViewSize; 8478 if (isPictureAfterFirstLayout) { 8479 // Reset the last sent data here since dealing with new page. 8480 mLastWidthSent = 0; 8481 mZoomManager.onFirstLayout(draw); 8482 if (!mDrawHistory) { 8483 // Do not send the scroll event for this particular 8484 // scroll message. Note that a scroll event may 8485 // still be fired if the user scrolls before the 8486 // message can be handled. 8487 mSendScrollEvent = false; 8488 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 8489 mSendScrollEvent = true; 8490 8491 // As we are on a new page, remove the WebTextView. This 8492 // is necessary for page loads driven by webkit, and in 8493 // particular when the user was on a password field, so 8494 // the WebTextView was visible. 8495 clearTextEntry(); 8496 } 8497 } 8498 8499 // We update the layout (i.e. request a layout from the 8500 // view system) if the last view size that we sent to 8501 // WebCore matches the view size of the picture we just 8502 // received in the fixed dimension. 8503 final boolean updateLayout = viewSize.x == mLastWidthSent 8504 && viewSize.y == mLastHeightSent; 8505 // Don't send scroll event for picture coming from webkit, 8506 // since the new picture may cause a scroll event to override 8507 // the saved history scroll position. 8508 mSendScrollEvent = false; 8509 recordNewContentSize(draw.mContentSize.x, 8510 draw.mContentSize.y, updateLayout); 8511 mSendScrollEvent = true; 8512 if (DebugFlags.WEB_VIEW) { 8513 Rect b = draw.mInvalRegion.getBounds(); 8514 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8515 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8516 } 8517 invalidateContentRect(draw.mInvalRegion.getBounds()); 8518 8519 if (mPictureListener != null) { 8520 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8521 } 8522 8523 // update the zoom information based on the new picture 8524 mZoomManager.onNewPicture(draw); 8525 8526 if (draw.mFocusSizeChanged && inEditingMode()) { 8527 mFocusSizeChanged = true; 8528 } 8529 if (isPictureAfterFirstLayout) { 8530 mViewManager.postReadyToDrawAll(); 8531 } 8532 } 8533 8534 /** 8535 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8536 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8537 */ 8538 private void updateTextSelectionFromMessage(int nodePointer, 8539 int textGeneration, WebViewCore.TextSelectionData data) { 8540 if (inEditingMode() 8541 && mWebTextView.isSameTextField(nodePointer) 8542 && textGeneration == mTextGeneration) { 8543 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8544 } 8545 } 8546 8547 // Class used to use a dropdown for a <select> element 8548 private class InvokeListBox implements Runnable { 8549 // Whether the listbox allows multiple selection. 8550 private boolean mMultiple; 8551 // Passed in to a list with multiple selection to tell 8552 // which items are selected. 8553 private int[] mSelectedArray; 8554 // Passed in to a list with single selection to tell 8555 // where the initial selection is. 8556 private int mSelection; 8557 8558 private Container[] mContainers; 8559 8560 // Need these to provide stable ids to my ArrayAdapter, 8561 // which normally does not have stable ids. (Bug 1250098) 8562 private class Container extends Object { 8563 /** 8564 * Possible values for mEnabled. Keep in sync with OptionStatus in 8565 * WebViewCore.cpp 8566 */ 8567 final static int OPTGROUP = -1; 8568 final static int OPTION_DISABLED = 0; 8569 final static int OPTION_ENABLED = 1; 8570 8571 String mString; 8572 int mEnabled; 8573 int mId; 8574 8575 @Override 8576 public String toString() { 8577 return mString; 8578 } 8579 } 8580 8581 /** 8582 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8583 * and allow filtering. 8584 */ 8585 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8586 public MyArrayListAdapter() { 8587 super(mContext, 8588 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8589 com.android.internal.R.layout.webview_select_singlechoice, 8590 mContainers); 8591 } 8592 8593 @Override 8594 public View getView(int position, View convertView, 8595 ViewGroup parent) { 8596 // Always pass in null so that we will get a new CheckedTextView 8597 // Otherwise, an item which was previously used as an <optgroup> 8598 // element (i.e. has no check), could get used as an <option> 8599 // element, which needs a checkbox/radio, but it would not have 8600 // one. 8601 convertView = super.getView(position, null, parent); 8602 Container c = item(position); 8603 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8604 // ListView does not draw dividers between disabled and 8605 // enabled elements. Use a LinearLayout to provide dividers 8606 LinearLayout layout = new LinearLayout(mContext); 8607 layout.setOrientation(LinearLayout.VERTICAL); 8608 if (position > 0) { 8609 View dividerTop = new View(mContext); 8610 dividerTop.setBackgroundResource( 8611 android.R.drawable.divider_horizontal_bright); 8612 layout.addView(dividerTop); 8613 } 8614 8615 if (Container.OPTGROUP == c.mEnabled) { 8616 // Currently select_dialog_multichoice uses CheckedTextViews. 8617 // If that changes, the class cast will no longer be valid. 8618 if (mMultiple) { 8619 Assert.assertTrue(convertView instanceof CheckedTextView); 8620 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8621 } 8622 } else { 8623 // c.mEnabled == Container.OPTION_DISABLED 8624 // Draw the disabled element in a disabled state. 8625 convertView.setEnabled(false); 8626 } 8627 8628 layout.addView(convertView); 8629 if (position < getCount() - 1) { 8630 View dividerBottom = new View(mContext); 8631 dividerBottom.setBackgroundResource( 8632 android.R.drawable.divider_horizontal_bright); 8633 layout.addView(dividerBottom); 8634 } 8635 return layout; 8636 } 8637 return convertView; 8638 } 8639 8640 @Override 8641 public boolean hasStableIds() { 8642 // AdapterView's onChanged method uses this to determine whether 8643 // to restore the old state. Return false so that the old (out 8644 // of date) state does not replace the new, valid state. 8645 return false; 8646 } 8647 8648 private Container item(int position) { 8649 if (position < 0 || position >= getCount()) { 8650 return null; 8651 } 8652 return (Container) getItem(position); 8653 } 8654 8655 @Override 8656 public long getItemId(int position) { 8657 Container item = item(position); 8658 if (item == null) { 8659 return -1; 8660 } 8661 return item.mId; 8662 } 8663 8664 @Override 8665 public boolean areAllItemsEnabled() { 8666 return false; 8667 } 8668 8669 @Override 8670 public boolean isEnabled(int position) { 8671 Container item = item(position); 8672 if (item == null) { 8673 return false; 8674 } 8675 return Container.OPTION_ENABLED == item.mEnabled; 8676 } 8677 } 8678 8679 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8680 mMultiple = true; 8681 mSelectedArray = selected; 8682 8683 int length = array.length; 8684 mContainers = new Container[length]; 8685 for (int i = 0; i < length; i++) { 8686 mContainers[i] = new Container(); 8687 mContainers[i].mString = array[i]; 8688 mContainers[i].mEnabled = enabled[i]; 8689 mContainers[i].mId = i; 8690 } 8691 } 8692 8693 private InvokeListBox(String[] array, int[] enabled, int selection) { 8694 mSelection = selection; 8695 mMultiple = false; 8696 8697 int length = array.length; 8698 mContainers = new Container[length]; 8699 for (int i = 0; i < length; i++) { 8700 mContainers[i] = new Container(); 8701 mContainers[i].mString = array[i]; 8702 mContainers[i].mEnabled = enabled[i]; 8703 mContainers[i].mId = i; 8704 } 8705 } 8706 8707 /* 8708 * Whenever the data set changes due to filtering, this class ensures 8709 * that the checked item remains checked. 8710 */ 8711 private class SingleDataSetObserver extends DataSetObserver { 8712 private long mCheckedId; 8713 private ListView mListView; 8714 private Adapter mAdapter; 8715 8716 /* 8717 * Create a new observer. 8718 * @param id The ID of the item to keep checked. 8719 * @param l ListView for getting and clearing the checked states 8720 * @param a Adapter for getting the IDs 8721 */ 8722 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8723 mCheckedId = id; 8724 mListView = l; 8725 mAdapter = a; 8726 } 8727 8728 @Override 8729 public void onChanged() { 8730 // The filter may have changed which item is checked. Find the 8731 // item that the ListView thinks is checked. 8732 int position = mListView.getCheckedItemPosition(); 8733 long id = mAdapter.getItemId(position); 8734 if (mCheckedId != id) { 8735 // Clear the ListView's idea of the checked item, since 8736 // it is incorrect 8737 mListView.clearChoices(); 8738 // Search for mCheckedId. If it is in the filtered list, 8739 // mark it as checked 8740 int count = mAdapter.getCount(); 8741 for (int i = 0; i < count; i++) { 8742 if (mAdapter.getItemId(i) == mCheckedId) { 8743 mListView.setItemChecked(i, true); 8744 break; 8745 } 8746 } 8747 } 8748 } 8749 } 8750 8751 public void run() { 8752 final ListView listView = (ListView) LayoutInflater.from(mContext) 8753 .inflate(com.android.internal.R.layout.select_dialog, null); 8754 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8755 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8756 .setView(listView).setCancelable(true) 8757 .setInverseBackgroundForced(true); 8758 8759 if (mMultiple) { 8760 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8761 public void onClick(DialogInterface dialog, int which) { 8762 mWebViewCore.sendMessage( 8763 EventHub.LISTBOX_CHOICES, 8764 adapter.getCount(), 0, 8765 listView.getCheckedItemPositions()); 8766 }}); 8767 b.setNegativeButton(android.R.string.cancel, 8768 new DialogInterface.OnClickListener() { 8769 public void onClick(DialogInterface dialog, int which) { 8770 mWebViewCore.sendMessage( 8771 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8772 }}); 8773 } 8774 mListBoxDialog = b.create(); 8775 listView.setAdapter(adapter); 8776 listView.setFocusableInTouchMode(true); 8777 // There is a bug (1250103) where the checks in a ListView with 8778 // multiple items selected are associated with the positions, not 8779 // the ids, so the items do not properly retain their checks when 8780 // filtered. Do not allow filtering on multiple lists until 8781 // that bug is fixed. 8782 8783 listView.setTextFilterEnabled(!mMultiple); 8784 if (mMultiple) { 8785 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8786 int length = mSelectedArray.length; 8787 for (int i = 0; i < length; i++) { 8788 listView.setItemChecked(mSelectedArray[i], true); 8789 } 8790 } else { 8791 listView.setOnItemClickListener(new OnItemClickListener() { 8792 public void onItemClick(AdapterView<?> parent, View v, 8793 int position, long id) { 8794 // Rather than sending the message right away, send it 8795 // after the page regains focus. 8796 mListBoxMessage = Message.obtain(null, 8797 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8798 mListBoxDialog.dismiss(); 8799 mListBoxDialog = null; 8800 } 8801 }); 8802 if (mSelection != -1) { 8803 listView.setSelection(mSelection); 8804 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8805 listView.setItemChecked(mSelection, true); 8806 DataSetObserver observer = new SingleDataSetObserver( 8807 adapter.getItemId(mSelection), listView, adapter); 8808 adapter.registerDataSetObserver(observer); 8809 } 8810 } 8811 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8812 public void onCancel(DialogInterface dialog) { 8813 mWebViewCore.sendMessage( 8814 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8815 mListBoxDialog = null; 8816 } 8817 }); 8818 mListBoxDialog.show(); 8819 } 8820 } 8821 8822 private Message mListBoxMessage; 8823 8824 /* 8825 * Request a dropdown menu for a listbox with multiple selection. 8826 * 8827 * @param array Labels for the listbox. 8828 * @param enabledArray State for each element in the list. See static 8829 * integers in Container class. 8830 * @param selectedArray Which positions are initally selected. 8831 */ 8832 void requestListBox(String[] array, int[] enabledArray, int[] 8833 selectedArray) { 8834 mPrivateHandler.post( 8835 new InvokeListBox(array, enabledArray, selectedArray)); 8836 } 8837 8838 /* 8839 * Request a dropdown menu for a listbox with single selection or a single 8840 * <select> element. 8841 * 8842 * @param array Labels for the listbox. 8843 * @param enabledArray State for each element in the list. See static 8844 * integers in Container class. 8845 * @param selection Which position is initally selected. 8846 */ 8847 void requestListBox(String[] array, int[] enabledArray, int selection) { 8848 mPrivateHandler.post( 8849 new InvokeListBox(array, enabledArray, selection)); 8850 } 8851 8852 // called by JNI 8853 private void sendMoveFocus(int frame, int node) { 8854 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8855 new WebViewCore.CursorData(frame, node, 0, 0)); 8856 } 8857 8858 // called by JNI 8859 private void sendMoveMouse(int frame, int node, int x, int y) { 8860 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8861 new WebViewCore.CursorData(frame, node, x, y)); 8862 } 8863 8864 /* 8865 * Send a mouse move event to the webcore thread. 8866 * 8867 * @param removeFocus Pass true to remove the WebTextView, if present. 8868 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8869 * called by JNI 8870 */ 8871 @SuppressWarnings("unused") 8872 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8873 if (removeFocus) { 8874 clearTextEntry(); 8875 } 8876 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8877 stopPaintingCaret ? 1 : 0, 0, 8878 cursorData()); 8879 } 8880 8881 /** 8882 * Called by JNI to send a message to the webcore thread that the user 8883 * touched the webpage. 8884 * @param touchGeneration Generation number of the touch, to ignore touches 8885 * after a new one has been generated. 8886 * @param frame Pointer to the frame holding the node that was touched. 8887 * @param node Pointer to the node touched. 8888 * @param x x-position of the touch. 8889 * @param y y-position of the touch. 8890 */ 8891 private void sendMotionUp(int touchGeneration, 8892 int frame, int node, int x, int y) { 8893 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8894 touchUpData.mMoveGeneration = touchGeneration; 8895 touchUpData.mFrame = frame; 8896 touchUpData.mNode = node; 8897 touchUpData.mX = x; 8898 touchUpData.mY = y; 8899 touchUpData.mNativeLayer = nativeScrollableLayer( 8900 x, y, touchUpData.mNativeLayerRect, null); 8901 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8902 } 8903 8904 8905 private int getScaledMaxXScroll() { 8906 int width; 8907 if (mHeightCanMeasure == false) { 8908 width = getViewWidth() / 4; 8909 } else { 8910 Rect visRect = new Rect(); 8911 calcOurVisibleRect(visRect); 8912 width = visRect.width() / 2; 8913 } 8914 // FIXME the divisor should be retrieved from somewhere 8915 return viewToContentX(width); 8916 } 8917 8918 private int getScaledMaxYScroll() { 8919 int height; 8920 if (mHeightCanMeasure == false) { 8921 height = getViewHeight() / 4; 8922 } else { 8923 Rect visRect = new Rect(); 8924 calcOurVisibleRect(visRect); 8925 height = visRect.height() / 2; 8926 } 8927 // FIXME the divisor should be retrieved from somewhere 8928 // the closest thing today is hard-coded into ScrollView.java 8929 // (from ScrollView.java, line 363) int maxJump = height/2; 8930 return Math.round(height * mZoomManager.getInvScale()); 8931 } 8932 8933 /** 8934 * Called by JNI to invalidate view 8935 */ 8936 private void viewInvalidate() { 8937 invalidate(); 8938 } 8939 8940 /** 8941 * Pass the key directly to the page. This assumes that 8942 * nativePageShouldHandleShiftAndArrows() returned true. 8943 */ 8944 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8945 int keyEventAction; 8946 int eventHubAction; 8947 if (down) { 8948 keyEventAction = KeyEvent.ACTION_DOWN; 8949 eventHubAction = EventHub.KEY_DOWN; 8950 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8951 } else { 8952 keyEventAction = KeyEvent.ACTION_UP; 8953 eventHubAction = EventHub.KEY_UP; 8954 } 8955 8956 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8957 1, (metaState & KeyEvent.META_SHIFT_ON) 8958 | (metaState & KeyEvent.META_ALT_ON) 8959 | (metaState & KeyEvent.META_SYM_ON) 8960 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8961 mWebViewCore.sendMessage(eventHubAction, event); 8962 } 8963 8964 // return true if the key was handled 8965 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8966 long time) { 8967 if (mNativeClass == 0) { 8968 return false; 8969 } 8970 mInitialHitTestResult = null; 8971 mLastCursorTime = time; 8972 mLastCursorBounds = nativeGetCursorRingBounds(); 8973 boolean keyHandled 8974 = nativeMoveCursor(keyCode, count, noScroll) == false; 8975 if (DebugFlags.WEB_VIEW) { 8976 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8977 + " mLastCursorTime=" + mLastCursorTime 8978 + " handled=" + keyHandled); 8979 } 8980 if (keyHandled == false) { 8981 return keyHandled; 8982 } 8983 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8984 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8985 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8986 // set last touch so that context menu related functions will work 8987 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8988 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8989 if (mHeightCanMeasure == false) { 8990 return keyHandled; 8991 } 8992 Rect visRect = new Rect(); 8993 calcOurVisibleRect(visRect); 8994 Rect outset = new Rect(visRect); 8995 int maxXScroll = visRect.width() / 2; 8996 int maxYScroll = visRect.height() / 2; 8997 outset.inset(-maxXScroll, -maxYScroll); 8998 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8999 return keyHandled; 9000 } 9001 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9002 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9003 maxXScroll); 9004 if (maxH > 0) { 9005 pinScrollBy(maxH, 0, true, 0); 9006 } else { 9007 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9008 -maxXScroll); 9009 if (maxH < 0) { 9010 pinScrollBy(maxH, 0, true, 0); 9011 } 9012 } 9013 if (mLastCursorBounds.isEmpty()) return keyHandled; 9014 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9015 return keyHandled; 9016 } 9017 if (DebugFlags.WEB_VIEW) { 9018 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9019 + contentCursorRingBounds); 9020 } 9021 requestRectangleOnScreen(viewCursorRingBounds); 9022 return keyHandled; 9023 } 9024 9025 /** 9026 * @return Whether accessibility script has been injected. 9027 */ 9028 private boolean accessibilityScriptInjected() { 9029 // TODO: Maybe the injected script should announce its presence in 9030 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9031 // will check that as one of the conditions it looks for 9032 return mAccessibilityScriptInjected; 9033 } 9034 9035 /** 9036 * Set the background color. It's white by default. Pass 9037 * zero to make the view transparent. 9038 * @param color the ARGB color described by Color.java 9039 */ 9040 @Override 9041 public void setBackgroundColor(int color) { 9042 mBackgroundColor = color; 9043 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9044 } 9045 9046 /** 9047 * @deprecated This method is now obsolete. 9048 */ 9049 @Deprecated 9050 public void debugDump() { 9051 checkThread(); 9052 nativeDebugDump(); 9053 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9054 } 9055 9056 /** 9057 * Draw the HTML page into the specified canvas. This call ignores any 9058 * view-specific zoom, scroll offset, or other changes. It does not draw 9059 * any view-specific chrome, such as progress or URL bars. 9060 * 9061 * @hide only needs to be accessible to Browser and testing 9062 */ 9063 public void drawPage(Canvas canvas) { 9064 nativeDraw(canvas, 0, 0, false); 9065 } 9066 9067 /** 9068 * Enable the communication b/t the webView and VideoViewProxy 9069 * 9070 * @hide only used by the Browser 9071 */ 9072 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9073 mHTML5VideoViewProxy = proxy; 9074 } 9075 9076 /** 9077 * Set the time to wait between passing touches to WebCore. See also the 9078 * TOUCH_SENT_INTERVAL member for further discussion. 9079 * 9080 * @hide This is only used by the DRT test application. 9081 */ 9082 public void setTouchInterval(int interval) { 9083 mCurrentTouchInterval = interval; 9084 } 9085 9086 /** 9087 * Update our cache with updatedText. 9088 * @param updatedText The new text to put in our cache. 9089 * @hide 9090 */ 9091 protected void updateCachedTextfield(String updatedText) { 9092 // Also place our generation number so that when we look at the cache 9093 // we recognize that it is up to date. 9094 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9095 } 9096 9097 /*package*/ void autoFillForm(int autoFillQueryId) { 9098 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9099 } 9100 9101 /* package */ ViewManager getViewManager() { 9102 return mViewManager; 9103 } 9104 9105 private static void checkThread() { 9106 if (Looper.myLooper() != Looper.getMainLooper()) { 9107 RuntimeException exception = new RuntimeException( 9108 "A WebView method was called on thread '" + 9109 Thread.currentThread().getName() + "'. " + 9110 "All WebView methods must be called on the UI thread. " + 9111 "Future versions of WebView may not support use on other threads."); 9112 Log.e(LOGTAG, Log.getStackTraceString(exception)); 9113 StrictMode.onWebViewMethodCalledOnWrongThread(exception); 9114 } 9115 } 9116 9117 /** @hide send content invalidate */ 9118 protected void contentInvalidateAll() { 9119 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9120 } 9121 9122 /** @hide call pageSwapCallback upon next page swap */ 9123 protected void registerPageSwapCallback() { 9124 nativeRegisterPageSwapCallback(); 9125 } 9126 9127 /** 9128 * Begin collecting per-tile profiling data 9129 * 9130 * @hide only used by profiling tests 9131 */ 9132 public void tileProfilingStart() { 9133 nativeTileProfilingStart(); 9134 } 9135 /** 9136 * Return per-tile profiling data 9137 * 9138 * @hide only used by profiling tests 9139 */ 9140 public float tileProfilingStop() { 9141 return nativeTileProfilingStop(); 9142 } 9143 9144 /** @hide only used by profiling tests */ 9145 public void tileProfilingClear() { 9146 nativeTileProfilingClear(); 9147 } 9148 /** @hide only used by profiling tests */ 9149 public int tileProfilingNumFrames() { 9150 return nativeTileProfilingNumFrames(); 9151 } 9152 /** @hide only used by profiling tests */ 9153 public int tileProfilingNumTilesInFrame(int frame) { 9154 return nativeTileProfilingNumTilesInFrame(frame); 9155 } 9156 /** @hide only used by profiling tests */ 9157 public int tileProfilingGetInt(int frame, int tile, String key) { 9158 return nativeTileProfilingGetInt(frame, tile, key); 9159 } 9160 /** @hide only used by profiling tests */ 9161 public float tileProfilingGetFloat(int frame, int tile, String key) { 9162 return nativeTileProfilingGetFloat(frame, tile, key); 9163 } 9164 9165 private native int nativeCacheHitFramePointer(); 9166 private native boolean nativeCacheHitIsPlugin(); 9167 private native Rect nativeCacheHitNodeBounds(); 9168 private native int nativeCacheHitNodePointer(); 9169 /* package */ native void nativeClearCursor(); 9170 private native void nativeCreate(int ptr, String drawableDir); 9171 private native int nativeCursorFramePointer(); 9172 private native Rect nativeCursorNodeBounds(); 9173 private native int nativeCursorNodePointer(); 9174 private native boolean nativeCursorIntersects(Rect visibleRect); 9175 private native boolean nativeCursorIsAnchor(); 9176 private native boolean nativeCursorIsTextInput(); 9177 private native Point nativeCursorPosition(); 9178 private native String nativeCursorText(); 9179 /** 9180 * Returns true if the native cursor node says it wants to handle key events 9181 * (ala plugins). This can only be called if mNativeClass is non-zero! 9182 */ 9183 private native boolean nativeCursorWantsKeyEvents(); 9184 private native void nativeDebugDump(); 9185 private native void nativeDestroy(); 9186 9187 /** 9188 * Draw the picture set with a background color and extra. If 9189 * "splitIfNeeded" is true and the return value is not 0, the return value 9190 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9191 * native allocation can be freed. 9192 */ 9193 private native int nativeDraw(Canvas canvas, int color, int extra, 9194 boolean splitIfNeeded); 9195 private native void nativeDumpDisplayTree(String urlOrNull); 9196 private native boolean nativeEvaluateLayersAnimations(); 9197 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 9198 float scale, int extras); 9199 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 9200 private native void nativeExtendSelection(int x, int y); 9201 private native int nativeFindAll(String findLower, String findUpper, 9202 boolean sameAsLastSearch); 9203 private native void nativeFindNext(boolean forward); 9204 /* package */ native int nativeFocusCandidateFramePointer(); 9205 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9206 /* package */ native boolean nativeFocusCandidateIsPassword(); 9207 private native boolean nativeFocusCandidateIsRtlText(); 9208 private native boolean nativeFocusCandidateIsTextInput(); 9209 /* package */ native int nativeFocusCandidateMaxLength(); 9210 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9211 /* package */ native String nativeFocusCandidateName(); 9212 private native Rect nativeFocusCandidateNodeBounds(); 9213 /** 9214 * @return A Rect with left, top, right, bottom set to the corresponding 9215 * padding values in the focus candidate, if it is a textfield/textarea with 9216 * a style. Otherwise return null. This is not actually a rectangle; Rect 9217 * is being used to pass four integers. 9218 */ 9219 private native Rect nativeFocusCandidatePaddingRect(); 9220 /* package */ native int nativeFocusCandidatePointer(); 9221 private native String nativeFocusCandidateText(); 9222 /* package */ native float nativeFocusCandidateTextSize(); 9223 /* package */ native int nativeFocusCandidateLineHeight(); 9224 /** 9225 * Returns an integer corresponding to WebView.cpp::type. 9226 * See WebTextView.setType() 9227 */ 9228 private native int nativeFocusCandidateType(); 9229 private native boolean nativeFocusIsPlugin(); 9230 private native Rect nativeFocusNodeBounds(); 9231 /* package */ native int nativeFocusNodePointer(); 9232 private native Rect nativeGetCursorRingBounds(); 9233 private native String nativeGetSelection(); 9234 private native boolean nativeHasCursorNode(); 9235 private native boolean nativeHasFocusNode(); 9236 private native void nativeHideCursor(); 9237 private native boolean nativeHitSelection(int x, int y); 9238 private native String nativeImageURI(int x, int y); 9239 private native void nativeInstrumentReport(); 9240 private native Rect nativeLayerBounds(int layer); 9241 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9242 // return true if the page has been scrolled 9243 private native boolean nativeMotionUp(int x, int y, int slop); 9244 // returns false if it handled the key 9245 private native boolean nativeMoveCursor(int keyCode, int count, 9246 boolean noScroll); 9247 private native int nativeMoveGeneration(); 9248 private native void nativeMoveSelection(int x, int y); 9249 /** 9250 * @return true if the page should get the shift and arrow keys, rather 9251 * than select text/navigation. 9252 * 9253 * If the focus is a plugin, or if the focus and cursor match and are 9254 * a contentEditable element, then the page should handle these keys. 9255 */ 9256 private native boolean nativePageShouldHandleShiftAndArrows(); 9257 private native boolean nativePointInNavCache(int x, int y, int slop); 9258 // Like many other of our native methods, you must make sure that 9259 // mNativeClass is not null before calling this method. 9260 private native void nativeRecordButtons(boolean focused, 9261 boolean pressed, boolean invalidate); 9262 private native void nativeResetSelection(); 9263 private native Point nativeSelectableText(); 9264 private native void nativeSelectAll(); 9265 private native void nativeSelectBestAt(Rect rect); 9266 private native void nativeSelectAt(int x, int y); 9267 private native int nativeSelectionX(); 9268 private native int nativeSelectionY(); 9269 private native int nativeFindIndex(); 9270 private native void nativeSetExtendSelection(); 9271 private native void nativeSetFindIsEmpty(); 9272 private native void nativeSetFindIsUp(boolean isUp); 9273 private native void nativeSetHeightCanMeasure(boolean measure); 9274 private native void nativeSetBaseLayer(int layer, Region invalRegion, 9275 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9276 boolean registerPageSwapCallback); 9277 private native int nativeGetBaseLayer(); 9278 private native void nativeShowCursorTimed(); 9279 private native void nativeReplaceBaseContent(int content); 9280 private native void nativeCopyBaseContentToPicture(Picture pict); 9281 private native boolean nativeHasContent(); 9282 private native void nativeSetSelectionPointer(boolean set, 9283 float scale, int x, int y); 9284 private native boolean nativeStartSelection(int x, int y); 9285 private native void nativeStopGL(); 9286 private native Rect nativeSubtractLayers(Rect content); 9287 private native int nativeTextGeneration(); 9288 private native void nativeRegisterPageSwapCallback(); 9289 private native void nativeTileProfilingStart(); 9290 private native float nativeTileProfilingStop(); 9291 private native void nativeTileProfilingClear(); 9292 private native int nativeTileProfilingNumFrames(); 9293 private native int nativeTileProfilingNumTilesInFrame(int frame); 9294 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9295 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9296 // Never call this version except by updateCachedTextfield(String) - 9297 // we always want to pass in our generation number. 9298 private native void nativeUpdateCachedTextfield(String updatedText, 9299 int generation); 9300 private native boolean nativeWordSelection(int x, int y); 9301 // return NO_LEFTEDGE means failure. 9302 static final int NO_LEFTEDGE = -1; 9303 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9304 9305 private native void nativeUseHardwareAccelSkia(boolean enabled); 9306 9307 // Returns a pointer to the scrollable LayerAndroid at the given point. 9308 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9309 Rect scrollBounds); 9310 /** 9311 * Scroll the specified layer. 9312 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9313 * @param newX Destination x position to which to scroll. 9314 * @param newY Destination y position to which to scroll. 9315 * @return True if the layer is successfully scrolled. 9316 */ 9317 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9318 private native int nativeGetBackgroundColor(); 9319 native boolean nativeSetProperty(String key, String value); 9320 native String nativeGetProperty(String key); 9321} 9322