WebView.java revision e88ca718ed9af788f2dc46b5f2db494906bbf41d
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.ComponentCallbacks2; 24import android.content.Context; 25import android.content.DialogInterface; 26import android.content.DialogInterface.OnCancelListener; 27import android.content.Intent; 28import android.content.IntentFilter; 29import android.content.pm.PackageInfo; 30import android.content.pm.PackageManager; 31import android.content.res.Configuration; 32import android.database.DataSetObserver; 33import android.graphics.Bitmap; 34import android.graphics.BitmapFactory; 35import android.graphics.BitmapShader; 36import android.graphics.Canvas; 37import android.graphics.Color; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.RegionIterator; 47import android.graphics.Shader; 48import android.graphics.drawable.Drawable; 49import android.net.Proxy; 50import android.net.ProxyProperties; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Looper; 57import android.os.Message; 58import android.os.StrictMode; 59import android.provider.Settings; 60import android.speech.tts.TextToSpeech; 61import android.util.AttributeSet; 62import android.util.EventLog; 63import android.util.Log; 64import android.view.Gravity; 65import android.view.HapticFeedbackConstants; 66import android.view.HardwareCanvas; 67import android.view.InputDevice; 68import android.view.KeyCharacterMap; 69import android.view.KeyEvent; 70import android.view.LayoutInflater; 71import android.view.MotionEvent; 72import android.view.ScaleGestureDetector; 73import android.view.SoundEffectConstants; 74import android.view.VelocityTracker; 75import android.view.View; 76import android.view.ViewConfiguration; 77import android.view.ViewGroup; 78import android.view.ViewParent; 79import android.view.ViewTreeObserver; 80import android.view.accessibility.AccessibilityEvent; 81import android.view.accessibility.AccessibilityManager; 82import android.view.accessibility.AccessibilityNodeInfo; 83import android.view.inputmethod.EditorInfo; 84import android.view.inputmethod.InputConnection; 85import android.view.inputmethod.InputMethodManager; 86import android.webkit.WebTextView.AutoCompleteAdapter; 87import android.webkit.WebViewCore.DrawData; 88import android.webkit.WebViewCore.EventHub; 89import android.webkit.WebViewCore.TouchEventData; 90import android.webkit.WebViewCore.TouchHighlightData; 91import android.widget.AbsoluteLayout; 92import android.widget.Adapter; 93import android.widget.AdapterView; 94import android.widget.AdapterView.OnItemClickListener; 95import android.widget.ArrayAdapter; 96import android.widget.CheckedTextView; 97import android.widget.LinearLayout; 98import android.widget.ListView; 99import android.widget.OverScroller; 100import android.widget.Toast; 101 102import junit.framework.Assert; 103 104import java.io.File; 105import java.io.FileInputStream; 106import java.io.FileNotFoundException; 107import java.io.FileOutputStream; 108import java.io.IOException; 109import java.io.InputStream; 110import java.io.OutputStream; 111import java.net.URLDecoder; 112import java.util.ArrayList; 113import java.util.HashMap; 114import java.util.HashSet; 115import java.util.List; 116import java.util.Map; 117import java.util.Set; 118import java.util.Vector; 119import java.util.regex.Matcher; 120import java.util.regex.Pattern; 121 122import javax.microedition.khronos.egl.EGL10; 123import javax.microedition.khronos.egl.EGLContext; 124import javax.microedition.khronos.egl.EGLDisplay; 125import static javax.microedition.khronos.egl.EGL10.*; 126 127/** 128 * <p>A View that displays web pages. This class is the basis upon which you 129 * can roll your own web browser or simply display some online content within your Activity. 130 * It uses the WebKit rendering engine to display 131 * web pages and includes methods to navigate forward and backward 132 * through a history, zoom in and out, perform text searches and more.</p> 133 * <p>To enable the built-in zoom, set 134 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 135 * (introduced in API version 3). 136 * <p>Note that, in order for your Activity to access the Internet and load web pages 137 * in a WebView, you must add the {@code INTERNET} permissions to your 138 * Android Manifest file:</p> 139 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 140 * 141 * <p>This must be a child of the <a 142 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 143 * element.</p> 144 * 145 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 146 * tutorial</a>.</p> 147 * 148 * <h3>Basic usage</h3> 149 * 150 * <p>By default, a WebView provides no browser-like widgets, does not 151 * enable JavaScript and web page errors are ignored. If your goal is only 152 * to display some HTML as a part of your UI, this is probably fine; 153 * the user won't need to interact with the web page beyond reading 154 * it, and the web page won't need to interact with the user. If you 155 * actually want a full-blown web browser, then you probably want to 156 * invoke the Browser application with a URL Intent rather than show it 157 * with a WebView. For example: 158 * <pre> 159 * Uri uri = Uri.parse("http://www.example.com"); 160 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 161 * startActivity(intent); 162 * </pre> 163 * <p>See {@link android.content.Intent} for more information.</p> 164 * 165 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 166 * or set the entire Activity window as a WebView during {@link 167 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 168 * <pre class="prettyprint"> 169 * WebView webview = new WebView(this); 170 * setContentView(webview); 171 * </pre> 172 * 173 * <p>Then load the desired web page:</p> 174 * <pre> 175 * // Simplest usage: note that an exception will NOT be thrown 176 * // if there is an error loading this page (see below). 177 * webview.loadUrl("http://slashdot.org/"); 178 * 179 * // OR, you can also load from an HTML string: 180 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 181 * webview.loadData(summary, "text/html", null); 182 * // ... although note that there are restrictions on what this HTML can do. 183 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 184 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 185 * </pre> 186 * 187 * <p>A WebView has several customization points where you can add your 188 * own behavior. These are:</p> 189 * 190 * <ul> 191 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 192 * This class is called when something that might impact a 193 * browser UI happens, for instance, progress updates and 194 * JavaScript alerts are sent here (see <a 195 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 196 * </li> 197 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 198 * It will be called when things happen that impact the 199 * rendering of the content, eg, errors or form submissions. You 200 * can also intercept URL loading here (via {@link 201 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 202 * shouldOverrideUrlLoading()}).</li> 203 * <li>Modifying the {@link android.webkit.WebSettings}, such as 204 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 205 * setJavaScriptEnabled()}. </li> 206 * <li>Adding JavaScript-to-Java interfaces with the {@link 207 * android.webkit.WebView#addJavascriptInterface} method. 208 * This lets you bind Java objects into the WebView so they can be 209 * controlled from the web pages JavaScript.</li> 210 * </ul> 211 * 212 * <p>Here's a more complicated example, showing error handling, 213 * settings, and progress notification:</p> 214 * 215 * <pre class="prettyprint"> 216 * // Let's display the progress in the activity title bar, like the 217 * // browser app does. 218 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 219 * 220 * webview.getSettings().setJavaScriptEnabled(true); 221 * 222 * final Activity activity = this; 223 * webview.setWebChromeClient(new WebChromeClient() { 224 * public void onProgressChanged(WebView view, int progress) { 225 * // Activities and WebViews measure progress with different scales. 226 * // The progress meter will automatically disappear when we reach 100% 227 * activity.setProgress(progress * 1000); 228 * } 229 * }); 230 * webview.setWebViewClient(new WebViewClient() { 231 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 232 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 233 * } 234 * }); 235 * 236 * webview.loadUrl("http://slashdot.org/"); 237 * </pre> 238 * 239 * <h3>Cookie and window management</h3> 240 * 241 * <p>For obvious security reasons, your application has its own 242 * cache, cookie store etc.—it does not share the Browser 243 * application's data. Cookies are managed on a separate thread, so 244 * operations like index building don't block the UI 245 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 246 * if you want to use cookies in your application. 247 * </p> 248 * 249 * <p>By default, requests by the HTML to open new windows are 250 * ignored. This is true whether they be opened by JavaScript or by 251 * the target attribute on a link. You can customize your 252 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 253 * and render them in whatever manner you want.</p> 254 * 255 * <p>The standard behavior for an Activity is to be destroyed and 256 * recreated when the device orientation or any other configuration changes. This will cause 257 * the WebView to reload the current page. If you don't want that, you 258 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 259 * changes, and then just leave the WebView alone. It'll automatically 260 * re-orient itself as appropriate. Read <a 261 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 262 * more information about how to handle configuration changes during runtime.</p> 263 * 264 * 265 * <h3>Building web pages to support different screen densities</h3> 266 * 267 * <p>The screen density of a device is based on the screen resolution. A screen with low density 268 * has fewer available pixels per inch, where a screen with high density 269 * has more — sometimes significantly more — pixels per inch. The density of a 270 * screen is important because, other things being equal, a UI element (such as a button) whose 271 * height and width are defined in terms of screen pixels will appear larger on the lower density 272 * screen and smaller on the higher density screen. 273 * For simplicity, Android collapses all actual screen densities into three generalized densities: 274 * high, medium, and low.</p> 275 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 276 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 277 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 278 * are bigger). 279 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 280 * you (as a web developer) target screens with different screen densities.</p> 281 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 282 * <ul> 283 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 284 * default scaling factor used for the current device. For example, if the value of {@code 285 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 286 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 287 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 288 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 289 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 290 * (discussed below), then you can stop this default scaling behavior.</li> 291 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 292 * densities for which this style sheet is to be used. The corresponding value should be either 293 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 294 * density, or high density screens, respectively. For example: 295 * <pre> 296 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 297 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 298 * which is the high density pixel ratio.</p> 299 * </li> 300 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 301 * this to specify the target density for which the web page is designed, using the following 302 * values: 303 * <ul> 304 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 305 * occurs.</li> 306 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 307 * as appropriate.</li> 308 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 309 * low density screens scale down. This is also the default behavior.</li> 310 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 311 * as appropriate.</li> 312 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 313 * values are 70-400).</li> 314 * </ul> 315 * <p>Here's an example meta tag to specify the target density:</p> 316 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 317 * </ul> 318 * <p>If you want to modify your web page for different densities, by using the {@code 319 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 320 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 321 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 322 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 323 * 324 * 325 */ 326@Widget 327public class WebView extends AbsoluteLayout 328 implements ViewTreeObserver.OnGlobalFocusChangeListener, 329 ViewGroup.OnHierarchyChangeListener { 330 331 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 332 public void onGlobalLayout() { 333 if (isShown()) { 334 setGLRectViewport(); 335 } 336 } 337 } 338 339 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 340 public void onScrollChanged() { 341 if (isShown()) { 342 setGLRectViewport(); 343 } 344 } 345 } 346 347 // The listener to capture global layout change event. 348 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 349 350 // The listener to capture scroll event. 351 private InnerScrollChangedListener mScrollChangedListener = null; 352 353 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 354 // the screen all-the-time. Good for profiling our drawing code 355 static private final boolean AUTO_REDRAW_HACK = false; 356 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 357 private boolean mAutoRedraw; 358 359 // Reference to the AlertDialog displayed by InvokeListBox. 360 // It's used to dismiss the dialog in destroy if not done before. 361 private AlertDialog mListBoxDialog = null; 362 363 static final String LOGTAG = "webview"; 364 365 private ZoomManager mZoomManager; 366 367 private final Rect mGLRectViewport = new Rect(); 368 private final Rect mViewRectViewport = new Rect(); 369 private boolean mGLViewportEmpty = false; 370 371 /** 372 * Transportation object for returning WebView across thread boundaries. 373 */ 374 public class WebViewTransport { 375 private WebView mWebview; 376 377 /** 378 * Set the WebView to the transportation object. 379 * @param webview The WebView to transport. 380 */ 381 public synchronized void setWebView(WebView webview) { 382 mWebview = webview; 383 } 384 385 /** 386 * Return the WebView object. 387 * @return WebView The transported WebView object. 388 */ 389 public synchronized WebView getWebView() { 390 return mWebview; 391 } 392 } 393 394 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 395 private static OnTrimMemoryListener sInstance = null; 396 397 static void init(Context c) { 398 if (sInstance == null) { 399 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 400 } 401 } 402 403 private OnTrimMemoryListener(Context c) { 404 c.registerComponentCallbacks(this); 405 } 406 407 @Override 408 public void onConfigurationChanged(Configuration newConfig) { 409 // Ignore 410 } 411 412 @Override 413 public void onLowMemory() { 414 // Ignore 415 } 416 417 @Override 418 public void onTrimMemory(int level) { 419 if (DebugFlags.WEB_VIEW) { 420 Log.d("WebView", "onTrimMemory: " + level); 421 } 422 WebView.nativeOnTrimMemory(level); 423 } 424 425 } 426 427 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 428 private final CallbackProxy mCallbackProxy; 429 430 private final WebViewDatabase mDatabase; 431 432 // SSL certificate for the main top-level page (if secure) 433 private SslCertificate mCertificate; 434 435 // Native WebView pointer that is 0 until the native object has been 436 // created. 437 private int mNativeClass; 438 // This would be final but it needs to be set to null when the WebView is 439 // destroyed. 440 private WebViewCore mWebViewCore; 441 // Handler for dispatching UI messages. 442 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 443 private WebTextView mWebTextView; 444 // Used to ignore changes to webkit text that arrives to the UI side after 445 // more key events. 446 private int mTextGeneration; 447 448 /* package */ void incrementTextGeneration() { mTextGeneration++; } 449 450 // Used by WebViewCore to create child views. 451 /* package */ final ViewManager mViewManager; 452 453 // Used to display in full screen mode 454 PluginFullScreenHolder mFullScreenHolder; 455 456 /** 457 * Position of the last touch event in pixels. 458 * Use integer to prevent loss of dragging delta calculation accuracy; 459 * which was done in float and converted to integer, and resulted in gradual 460 * and compounding touch position and view dragging mismatch. 461 */ 462 private int mLastTouchX; 463 private int mLastTouchY; 464 private int mStartTouchX; 465 private int mStartTouchY; 466 private float mAverageAngle; 467 468 /** 469 * Time of the last touch event. 470 */ 471 private long mLastTouchTime; 472 473 /** 474 * Time of the last time sending touch event to WebViewCore 475 */ 476 private long mLastSentTouchTime; 477 478 /** 479 * The minimum elapsed time before sending another ACTION_MOVE event to 480 * WebViewCore. This really should be tuned for each type of the devices. 481 * For example in Google Map api test case, it takes Dream device at least 482 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 483 * triggering the layout and drawing the picture. While the same process 484 * takes 60+ms on the current high speed device. If we make 485 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 486 * to WebViewCore queue and the real layout and draw events will be pushed 487 * to further, which slows down the refresh rate. Choose 50 to favor the 488 * current high speed devices. For Dream like devices, 100 is a better 489 * choice. Maybe make this in the buildspec later. 490 * (Update 12/14/2010: changed to 0 since current device should be able to 491 * handle the raw events and Map team voted to have the raw events too. 492 */ 493 private static final int TOUCH_SENT_INTERVAL = 0; 494 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 495 496 /** 497 * Helper class to get velocity for fling 498 */ 499 VelocityTracker mVelocityTracker; 500 private int mMaximumFling; 501 private float mLastVelocity; 502 private float mLastVelX; 503 private float mLastVelY; 504 505 // The id of the native layer being scrolled. 506 private int mScrollingLayer; 507 private Rect mScrollingLayerRect = new Rect(); 508 509 // only trigger accelerated fling if the new velocity is at least 510 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 511 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 512 513 /** 514 * Touch mode 515 */ 516 private int mTouchMode = TOUCH_DONE_MODE; 517 private static final int TOUCH_INIT_MODE = 1; 518 private static final int TOUCH_DRAG_START_MODE = 2; 519 private static final int TOUCH_DRAG_MODE = 3; 520 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 521 private static final int TOUCH_SHORTPRESS_MODE = 5; 522 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 523 private static final int TOUCH_DONE_MODE = 7; 524 private static final int TOUCH_PINCH_DRAG = 8; 525 private static final int TOUCH_DRAG_LAYER_MODE = 9; 526 527 // Whether to forward the touch events to WebCore 528 // Can only be set by WebKit via JNI. 529 private boolean mForwardTouchEvents = false; 530 531 // Whether to prevent default during touch. The initial value depends on 532 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 533 // for touch down. Otherwise UI will wait for the answer of the first 534 // confirmed move before taking over the control. 535 private static final int PREVENT_DEFAULT_NO = 0; 536 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 537 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 538 private static final int PREVENT_DEFAULT_YES = 3; 539 private static final int PREVENT_DEFAULT_IGNORE = 4; 540 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 541 542 // true when the touch movement exceeds the slop 543 private boolean mConfirmMove; 544 545 // if true, touch events will be first processed by WebCore, if prevent 546 // default is not set, the UI will continue handle them. 547 private boolean mDeferTouchProcess; 548 549 // to avoid interfering with the current touch events, track them 550 // separately. Currently no snapping or fling in the deferred process mode 551 private int mDeferTouchMode = TOUCH_DONE_MODE; 552 private float mLastDeferTouchX; 553 private float mLastDeferTouchY; 554 555 // To keep track of whether the current drag was initiated by a WebTextView, 556 // so that we know not to hide the cursor 557 boolean mDragFromTextInput; 558 559 // Whether or not to draw the cursor ring. 560 private boolean mDrawCursorRing = true; 561 562 // true if onPause has been called (and not onResume) 563 private boolean mIsPaused; 564 565 private HitTestResult mInitialHitTestResult; 566 567 /** 568 * Customizable constant 569 */ 570 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 571 private int mTouchSlopSquare; 572 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 573 private int mDoubleTapSlopSquare; 574 // pre-computed density adjusted navigation slop 575 private int mNavSlop; 576 // This should be ViewConfiguration.getTapTimeout() 577 // But system time out is 100ms, which is too short for the browser. 578 // In the browser, if it switches out of tap too soon, jump tap won't work. 579 // In addition, a double tap on a trackpad will always have a duration of 580 // 300ms, so this value must be at least that (otherwise we will timeout the 581 // first tap and convert it to a long press). 582 private static final int TAP_TIMEOUT = 300; 583 // This should be ViewConfiguration.getLongPressTimeout() 584 // But system time out is 500ms, which is too short for the browser. 585 // With a short timeout, it's difficult to treat trigger a short press. 586 private static final int LONG_PRESS_TIMEOUT = 1000; 587 // needed to avoid flinging after a pause of no movement 588 private static final int MIN_FLING_TIME = 250; 589 // draw unfiltered after drag is held without movement 590 private static final int MOTIONLESS_TIME = 100; 591 // The amount of content to overlap between two screens when going through 592 // pages with the space bar, in pixels. 593 private static final int PAGE_SCROLL_OVERLAP = 24; 594 595 /** 596 * These prevent calling requestLayout if either dimension is fixed. This 597 * depends on the layout parameters and the measure specs. 598 */ 599 boolean mWidthCanMeasure; 600 boolean mHeightCanMeasure; 601 602 // Remember the last dimensions we sent to the native side so we can avoid 603 // sending the same dimensions more than once. 604 int mLastWidthSent; 605 int mLastHeightSent; 606 // Since view height sent to webkit could be fixed to avoid relayout, this 607 // value records the last sent actual view height. 608 int mLastActualHeightSent; 609 610 private int mContentWidth; // cache of value from WebViewCore 611 private int mContentHeight; // cache of value from WebViewCore 612 613 // Need to have the separate control for horizontal and vertical scrollbar 614 // style than the View's single scrollbar style 615 private boolean mOverlayHorizontalScrollbar = true; 616 private boolean mOverlayVerticalScrollbar = false; 617 618 // our standard speed. this way small distances will be traversed in less 619 // time than large distances, but we cap the duration, so that very large 620 // distances won't take too long to get there. 621 private static final int STD_SPEED = 480; // pixels per second 622 // time for the longest scroll animation 623 private static final int MAX_DURATION = 750; // milliseconds 624 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 625 626 // Used by OverScrollGlow 627 OverScroller mScroller; 628 629 private boolean mInOverScrollMode = false; 630 private static Paint mOverScrollBackground; 631 private static Paint mOverScrollBorder; 632 633 private boolean mWrapContent; 634 private static final int MOTIONLESS_FALSE = 0; 635 private static final int MOTIONLESS_PENDING = 1; 636 private static final int MOTIONLESS_TRUE = 2; 637 private static final int MOTIONLESS_IGNORE = 3; 638 private int mHeldMotionless; 639 640 // An instance for injecting accessibility in WebViews with disabled 641 // JavaScript or ones for which no accessibility script exists 642 private AccessibilityInjector mAccessibilityInjector; 643 644 // flag indicating if accessibility script is injected so we 645 // know to handle Shift and arrows natively first 646 private boolean mAccessibilityScriptInjected; 647 648 static final boolean USE_JAVA_TEXT_SELECTION = true; 649 static final boolean DEBUG_TEXT_HANDLES = false; 650 private Region mTextSelectionRegion = new Region(); 651 private Paint mTextSelectionPaint; 652 private Drawable mSelectHandleLeft; 653 private Drawable mSelectHandleRight; 654 655 static final boolean USE_WEBKIT_RINGS = false; 656 // the color used to highlight the touch rectangles 657 private static final int HIGHLIGHT_COLOR = 0x6633b5e5; 658 // the round corner for the highlight path 659 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 660 // the region indicating where the user touched on the screen 661 private Region mTouchHighlightRegion = new Region(); 662 // the paint for the touch highlight 663 private Paint mTouchHightlightPaint; 664 // debug only 665 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 666 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 667 private Paint mTouchCrossHairColor; 668 private int mTouchHighlightX; 669 private int mTouchHighlightY; 670 private long mTouchHighlightRequested; 671 672 // Basically this proxy is used to tell the Video to update layer tree at 673 // SetBaseLayer time and to pause when WebView paused. 674 private HTML5VideoViewProxy mHTML5VideoViewProxy; 675 676 // If we are using a set picture, don't send view updates to webkit 677 private boolean mBlockWebkitViewMessages = false; 678 679 // cached value used to determine if we need to switch drawing models 680 private boolean mHardwareAccelSkia = false; 681 682 /* 683 * Private message ids 684 */ 685 private static final int REMEMBER_PASSWORD = 1; 686 private static final int NEVER_REMEMBER_PASSWORD = 2; 687 private static final int SWITCH_TO_SHORTPRESS = 3; 688 private static final int SWITCH_TO_LONGPRESS = 4; 689 private static final int RELEASE_SINGLE_TAP = 5; 690 private static final int REQUEST_FORM_DATA = 6; 691 private static final int DRAG_HELD_MOTIONLESS = 8; 692 private static final int AWAKEN_SCROLL_BARS = 9; 693 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 694 private static final int SCROLL_SELECT_TEXT = 11; 695 696 697 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 698 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 699 700 /* 701 * Package message ids 702 */ 703 static final int SCROLL_TO_MSG_ID = 101; 704 static final int NEW_PICTURE_MSG_ID = 105; 705 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 706 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 707 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 708 static final int UPDATE_ZOOM_RANGE = 109; 709 static final int UNHANDLED_NAV_KEY = 110; 710 static final int CLEAR_TEXT_ENTRY = 111; 711 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 712 static final int SHOW_RECT_MSG_ID = 113; 713 static final int LONG_PRESS_CENTER = 114; 714 static final int PREVENT_TOUCH_ID = 115; 715 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 716 // obj=Rect in doc coordinates 717 static final int INVAL_RECT_MSG_ID = 117; 718 static final int REQUEST_KEYBOARD = 118; 719 static final int DO_MOTION_UP = 119; 720 static final int SHOW_FULLSCREEN = 120; 721 static final int HIDE_FULLSCREEN = 121; 722 static final int DOM_FOCUS_CHANGED = 122; 723 static final int REPLACE_BASE_CONTENT = 123; 724 static final int FORM_DID_BLUR = 124; 725 static final int RETURN_LABEL = 125; 726 static final int FIND_AGAIN = 126; 727 static final int CENTER_FIT_RECT = 127; 728 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 729 static final int SET_SCROLLBAR_MODES = 129; 730 static final int SELECTION_STRING_CHANGED = 130; 731 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 732 static final int SAVE_WEBARCHIVE_FINISHED = 132; 733 734 static final int SET_AUTOFILLABLE = 133; 735 static final int AUTOFILL_COMPLETE = 134; 736 737 static final int SELECT_AT = 135; 738 static final int SCREEN_ON = 136; 739 static final int ENTER_FULLSCREEN_VIDEO = 137; 740 static final int UPDATE_SELECTION = 138; 741 742 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 743 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 744 745 static final String[] HandlerPrivateDebugString = { 746 "REMEMBER_PASSWORD", // = 1; 747 "NEVER_REMEMBER_PASSWORD", // = 2; 748 "SWITCH_TO_SHORTPRESS", // = 3; 749 "SWITCH_TO_LONGPRESS", // = 4; 750 "RELEASE_SINGLE_TAP", // = 5; 751 "REQUEST_FORM_DATA", // = 6; 752 "RESUME_WEBCORE_PRIORITY", // = 7; 753 "DRAG_HELD_MOTIONLESS", // = 8; 754 "AWAKEN_SCROLL_BARS", // = 9; 755 "PREVENT_DEFAULT_TIMEOUT", // = 10; 756 "SCROLL_SELECT_TEXT" // = 11; 757 }; 758 759 static final String[] HandlerPackageDebugString = { 760 "SCROLL_TO_MSG_ID", // = 101; 761 "102", // = 102; 762 "103", // = 103; 763 "104", // = 104; 764 "NEW_PICTURE_MSG_ID", // = 105; 765 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 766 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 767 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 768 "UPDATE_ZOOM_RANGE", // = 109; 769 "UNHANDLED_NAV_KEY", // = 110; 770 "CLEAR_TEXT_ENTRY", // = 111; 771 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 772 "SHOW_RECT_MSG_ID", // = 113; 773 "LONG_PRESS_CENTER", // = 114; 774 "PREVENT_TOUCH_ID", // = 115; 775 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 776 "INVAL_RECT_MSG_ID", // = 117; 777 "REQUEST_KEYBOARD", // = 118; 778 "DO_MOTION_UP", // = 119; 779 "SHOW_FULLSCREEN", // = 120; 780 "HIDE_FULLSCREEN", // = 121; 781 "DOM_FOCUS_CHANGED", // = 122; 782 "REPLACE_BASE_CONTENT", // = 123; 783 "FORM_DID_BLUR", // = 124; 784 "RETURN_LABEL", // = 125; 785 "FIND_AGAIN", // = 126; 786 "CENTER_FIT_RECT", // = 127; 787 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 788 "SET_SCROLLBAR_MODES", // = 129; 789 "SELECTION_STRING_CHANGED", // = 130; 790 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 791 "SAVE_WEBARCHIVE_FINISHED", // = 132; 792 "SET_AUTOFILLABLE", // = 133; 793 "AUTOFILL_COMPLETE", // = 134; 794 "SELECT_AT", // = 135; 795 "SCREEN_ON", // = 136; 796 "ENTER_FULLSCREEN_VIDEO" // = 137; 797 }; 798 799 // If the site doesn't use the viewport meta tag to specify the viewport, 800 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 801 static final int DEFAULT_VIEWPORT_WIDTH = 980; 802 803 // normally we try to fit the content to the minimum preferred width 804 // calculated by the Webkit. To avoid the bad behavior when some site's 805 // minimum preferred width keeps growing when changing the viewport width or 806 // the minimum preferred width is huge, an upper limit is needed. 807 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 808 809 // initial scale in percent. 0 means using default. 810 private int mInitialScaleInPercent = 0; 811 812 // Whether or not a scroll event should be sent to webkit. This is only set 813 // to false when restoring the scroll position. 814 private boolean mSendScrollEvent = true; 815 816 private int mSnapScrollMode = SNAP_NONE; 817 private static final int SNAP_NONE = 0; 818 private static final int SNAP_LOCK = 1; // not a separate state 819 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 820 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 821 private boolean mSnapPositive; 822 823 // keep these in sync with their counterparts in WebView.cpp 824 private static final int DRAW_EXTRAS_NONE = 0; 825 private static final int DRAW_EXTRAS_FIND = 1; 826 private static final int DRAW_EXTRAS_SELECTION = 2; 827 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 828 829 // keep this in sync with WebCore:ScrollbarMode in WebKit 830 private static final int SCROLLBAR_AUTO = 0; 831 private static final int SCROLLBAR_ALWAYSOFF = 1; 832 // as we auto fade scrollbar, this is ignored. 833 private static final int SCROLLBAR_ALWAYSON = 2; 834 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 835 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 836 837 // constants for determining script injection strategy 838 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 839 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 840 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 841 842 // the alias via which accessibility JavaScript interface is exposed 843 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 844 845 // JavaScript to inject the script chooser which will 846 // pick the right script for the current URL 847 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 848 "javascript:(function() {" + 849 " var chooser = document.createElement('script');" + 850 " chooser.type = 'text/javascript';" + 851 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 852 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 853 " })();"; 854 855 // Regular expression that matches the "axs" URL parameter. 856 // The value of 0 means the accessibility script is opted out 857 // The value of 1 means the accessibility script is already injected 858 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 859 860 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 861 private TextToSpeech mTextToSpeech; 862 863 // variable to cache the above pattern in case accessibility is enabled. 864 private Pattern mMatchAxsUrlParameterPattern; 865 866 /** 867 * Max distance to overscroll by in pixels. 868 * This how far content can be pulled beyond its normal bounds by the user. 869 */ 870 private int mOverscrollDistance; 871 872 /** 873 * Max distance to overfling by in pixels. 874 * This is how far flinged content can move beyond the end of its normal bounds. 875 */ 876 private int mOverflingDistance; 877 878 private OverScrollGlow mOverScrollGlow; 879 880 // Used to match key downs and key ups 881 private Vector<Integer> mKeysPressed; 882 883 /* package */ static boolean mLogEvent = true; 884 885 // for event log 886 private long mLastTouchUpTime = 0; 887 888 private WebViewCore.AutoFillData mAutoFillData; 889 890 private static boolean sNotificationsEnabled = true; 891 892 /** 893 * URI scheme for telephone number 894 */ 895 public static final String SCHEME_TEL = "tel:"; 896 /** 897 * URI scheme for email address 898 */ 899 public static final String SCHEME_MAILTO = "mailto:"; 900 /** 901 * URI scheme for map address 902 */ 903 public static final String SCHEME_GEO = "geo:0,0?q="; 904 905 private int mBackgroundColor = Color.WHITE; 906 907 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 908 private int mAutoScrollX = 0; 909 private int mAutoScrollY = 0; 910 private int mMinAutoScrollX = 0; 911 private int mMaxAutoScrollX = 0; 912 private int mMinAutoScrollY = 0; 913 private int mMaxAutoScrollY = 0; 914 private Rect mScrollingLayerBounds = new Rect(); 915 private boolean mSentAutoScrollMessage = false; 916 917 // Temporary hack to work around the context removal upon memory pressure 918 private static boolean mIncrementEGLContextHack = false; 919 920 // used for serializing asynchronously handled touch events. 921 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 922 923 // Used to track whether picture updating was paused due to a window focus change. 924 private boolean mPictureUpdatePausedForFocusChange = false; 925 926 // Used to notify listeners of a new picture. 927 private PictureListener mPictureListener; 928 /** 929 * Interface to listen for new pictures as they change. 930 * @deprecated This interface is now obsolete. 931 */ 932 @Deprecated 933 public interface PictureListener { 934 /** 935 * Notify the listener that the picture has changed. 936 * @param view The WebView that owns the picture. 937 * @param picture The new picture. 938 * @deprecated This method is now obsolete. 939 */ 940 @Deprecated 941 public void onNewPicture(WebView view, Picture picture); 942 } 943 944 // FIXME: Want to make this public, but need to change the API file. 945 public /*static*/ class HitTestResult { 946 /** 947 * Default HitTestResult, where the target is unknown 948 */ 949 public static final int UNKNOWN_TYPE = 0; 950 /** 951 * @deprecated This type is no longer used. 952 */ 953 @Deprecated 954 public static final int ANCHOR_TYPE = 1; 955 /** 956 * HitTestResult for hitting a phone number 957 */ 958 public static final int PHONE_TYPE = 2; 959 /** 960 * HitTestResult for hitting a map address 961 */ 962 public static final int GEO_TYPE = 3; 963 /** 964 * HitTestResult for hitting an email address 965 */ 966 public static final int EMAIL_TYPE = 4; 967 /** 968 * HitTestResult for hitting an HTML::img tag 969 */ 970 public static final int IMAGE_TYPE = 5; 971 /** 972 * @deprecated This type is no longer used. 973 */ 974 @Deprecated 975 public static final int IMAGE_ANCHOR_TYPE = 6; 976 /** 977 * HitTestResult for hitting a HTML::a tag with src=http 978 */ 979 public static final int SRC_ANCHOR_TYPE = 7; 980 /** 981 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 982 */ 983 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 984 /** 985 * HitTestResult for hitting an edit text area 986 */ 987 public static final int EDIT_TEXT_TYPE = 9; 988 989 private int mType; 990 private String mExtra; 991 992 HitTestResult() { 993 mType = UNKNOWN_TYPE; 994 } 995 996 private void setType(int type) { 997 mType = type; 998 } 999 1000 private void setExtra(String extra) { 1001 mExtra = extra; 1002 } 1003 1004 public int getType() { 1005 return mType; 1006 } 1007 1008 public String getExtra() { 1009 return mExtra; 1010 } 1011 } 1012 1013 /** 1014 * Construct a new WebView with a Context object. 1015 * @param context A Context object used to access application assets. 1016 */ 1017 public WebView(Context context) { 1018 this(context, null); 1019 } 1020 1021 /** 1022 * Construct a new WebView with layout parameters. 1023 * @param context A Context object used to access application assets. 1024 * @param attrs An AttributeSet passed to our parent. 1025 */ 1026 public WebView(Context context, AttributeSet attrs) { 1027 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1028 } 1029 1030 /** 1031 * Construct a new WebView with layout parameters and a default style. 1032 * @param context A Context object used to access application assets. 1033 * @param attrs An AttributeSet passed to our parent. 1034 * @param defStyle The default style resource ID. 1035 */ 1036 public WebView(Context context, AttributeSet attrs, int defStyle) { 1037 this(context, attrs, defStyle, false); 1038 } 1039 1040 /** 1041 * Construct a new WebView with layout parameters and a default style. 1042 * @param context A Context object used to access application assets. 1043 * @param attrs An AttributeSet passed to our parent. 1044 * @param defStyle The default style resource ID. 1045 */ 1046 public WebView(Context context, AttributeSet attrs, int defStyle, 1047 boolean privateBrowsing) { 1048 this(context, attrs, defStyle, null, privateBrowsing); 1049 } 1050 1051 /** 1052 * Construct a new WebView with layout parameters, a default style and a set 1053 * of custom Javscript interfaces to be added to the WebView at initialization 1054 * time. This guarantees that these interfaces will be available when the JS 1055 * context is initialized. 1056 * @param context A Context object used to access application assets. 1057 * @param attrs An AttributeSet passed to our parent. 1058 * @param defStyle The default style resource ID. 1059 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1060 * object implementing those interfaces, as values. 1061 * @hide pending API council approval. 1062 */ 1063 protected WebView(Context context, AttributeSet attrs, int defStyle, 1064 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1065 super(context, attrs, defStyle); 1066 checkThread(); 1067 1068 if (context == null) { 1069 throw new IllegalArgumentException("Invalid context argument"); 1070 } 1071 1072 // Used by the chrome stack to find application paths 1073 JniUtil.setContext(context); 1074 1075 mCallbackProxy = new CallbackProxy(context, this); 1076 mViewManager = new ViewManager(this); 1077 L10nUtils.setApplicationContext(context.getApplicationContext()); 1078 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1079 mDatabase = WebViewDatabase.getInstance(context); 1080 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1081 mZoomManager = new ZoomManager(this, mCallbackProxy); 1082 1083 /* The init method must follow the creation of certain member variables, 1084 * such as the mZoomManager. 1085 */ 1086 init(); 1087 setupPackageListener(context); 1088 setupProxyListener(context); 1089 updateMultiTouchSupport(context); 1090 1091 if (privateBrowsing) { 1092 startPrivateBrowsing(); 1093 } 1094 1095 mAutoFillData = new WebViewCore.AutoFillData(); 1096 } 1097 1098 private static class ProxyReceiver extends BroadcastReceiver { 1099 @Override 1100 public void onReceive(Context context, Intent intent) { 1101 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1102 handleProxyBroadcast(intent); 1103 } 1104 } 1105 } 1106 1107 /* 1108 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1109 */ 1110 private static ProxyReceiver sProxyReceiver; 1111 1112 /* 1113 * @param context This method expects this to be a valid context 1114 */ 1115 private static synchronized void setupProxyListener(Context context) { 1116 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1117 return; 1118 } 1119 IntentFilter filter = new IntentFilter(); 1120 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1121 sProxyReceiver = new ProxyReceiver(); 1122 Intent currentProxy = context.getApplicationContext().registerReceiver( 1123 sProxyReceiver, filter); 1124 if (currentProxy != null) { 1125 handleProxyBroadcast(currentProxy); 1126 } 1127 } 1128 1129 /* 1130 * @param context This method expects this to be a valid context 1131 */ 1132 private static synchronized void disableProxyListener(Context context) { 1133 if (sProxyReceiver == null) 1134 return; 1135 1136 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1137 sProxyReceiver = null; 1138 } 1139 1140 private static void handleProxyBroadcast(Intent intent) { 1141 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1142 if (proxyProperties == null || proxyProperties.getHost() == null) { 1143 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1144 return; 1145 } 1146 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1147 } 1148 1149 /* 1150 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1151 * or ACTION_PACKAGE_REMOVED. 1152 */ 1153 private static boolean sPackageInstallationReceiverAdded = false; 1154 1155 /* 1156 * A set of Google packages we monitor for the 1157 * navigator.isApplicationInstalled() API. Add additional packages as 1158 * needed. 1159 */ 1160 private static Set<String> sGoogleApps; 1161 static { 1162 sGoogleApps = new HashSet<String>(); 1163 sGoogleApps.add("com.google.android.youtube"); 1164 } 1165 1166 private static class PackageListener extends BroadcastReceiver { 1167 @Override 1168 public void onReceive(Context context, Intent intent) { 1169 final String action = intent.getAction(); 1170 final String packageName = intent.getData().getSchemeSpecificPart(); 1171 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1172 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1173 // if it is replacing, refreshPlugins() when adding 1174 return; 1175 } 1176 1177 if (sGoogleApps.contains(packageName)) { 1178 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1179 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1180 } else { 1181 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1182 } 1183 } 1184 1185 PluginManager pm = PluginManager.getInstance(context); 1186 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1187 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1188 } 1189 } 1190 } 1191 1192 private void setupPackageListener(Context context) { 1193 1194 /* 1195 * we must synchronize the instance check and the creation of the 1196 * receiver to ensure that only ONE receiver exists for all WebView 1197 * instances. 1198 */ 1199 synchronized (WebView.class) { 1200 1201 // if the receiver already exists then we do not need to register it 1202 // again 1203 if (sPackageInstallationReceiverAdded) { 1204 return; 1205 } 1206 1207 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1208 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1209 filter.addDataScheme("package"); 1210 BroadcastReceiver packageListener = new PackageListener(); 1211 context.getApplicationContext().registerReceiver(packageListener, filter); 1212 sPackageInstallationReceiverAdded = true; 1213 } 1214 1215 // check if any of the monitored apps are already installed 1216 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1217 1218 @Override 1219 protected Set<String> doInBackground(Void... unused) { 1220 Set<String> installedPackages = new HashSet<String>(); 1221 PackageManager pm = mContext.getPackageManager(); 1222 for (String name : sGoogleApps) { 1223 try { 1224 PackageInfo pInfo = pm.getPackageInfo(name, 1225 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1226 installedPackages.add(name); 1227 } catch (PackageManager.NameNotFoundException e) { 1228 // package not found 1229 } 1230 } 1231 return installedPackages; 1232 } 1233 1234 // Executes on the UI thread 1235 @Override 1236 protected void onPostExecute(Set<String> installedPackages) { 1237 if (mWebViewCore != null) { 1238 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1239 } 1240 } 1241 }; 1242 task.execute(); 1243 } 1244 1245 void updateMultiTouchSupport(Context context) { 1246 mZoomManager.updateMultiTouchSupport(context); 1247 } 1248 1249 private void init() { 1250 OnTrimMemoryListener.init(getContext()); 1251 1252 setWillNotDraw(false); 1253 setFocusable(true); 1254 setFocusableInTouchMode(true); 1255 setClickable(true); 1256 setLongClickable(true); 1257 1258 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1259 int slop = configuration.getScaledTouchSlop(); 1260 mTouchSlopSquare = slop * slop; 1261 slop = configuration.getScaledDoubleTapSlop(); 1262 mDoubleTapSlopSquare = slop * slop; 1263 final float density = getContext().getResources().getDisplayMetrics().density; 1264 // use one line height, 16 based on our current default font, for how 1265 // far we allow a touch be away from the edge of a link 1266 mNavSlop = (int) (16 * density); 1267 mZoomManager.init(density); 1268 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1269 1270 // Compute the inverse of the density squared. 1271 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1272 1273 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1274 mOverflingDistance = configuration.getScaledOverflingDistance(); 1275 1276 setScrollBarStyle(super.getScrollBarStyle()); 1277 // Initially use a size of two, since the user is likely to only hold 1278 // down two keys at a time (shift + another key) 1279 mKeysPressed = new Vector<Integer>(2); 1280 mHTML5VideoViewProxy = null ; 1281 } 1282 1283 @Override 1284 public boolean shouldDelayChildPressedState() { 1285 return true; 1286 } 1287 1288 /** 1289 * Adds accessibility APIs to JavaScript. 1290 * 1291 * Note: This method is responsible to performing the necessary 1292 * check if the accessibility APIs should be exposed. 1293 */ 1294 private void addAccessibilityApisToJavaScript() { 1295 if (AccessibilityManager.getInstance(mContext).isEnabled() 1296 && getSettings().getJavaScriptEnabled()) { 1297 // exposing the TTS for now ... 1298 mTextToSpeech = new TextToSpeech(getContext(), null); 1299 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1300 } 1301 } 1302 1303 /** 1304 * Removes accessibility APIs from JavaScript. 1305 */ 1306 private void removeAccessibilityApisFromJavaScript() { 1307 // exposing the TTS for now ... 1308 if (mTextToSpeech != null) { 1309 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1310 mTextToSpeech.shutdown(); 1311 mTextToSpeech = null; 1312 } 1313 } 1314 1315 @Override 1316 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1317 super.onInitializeAccessibilityNodeInfo(info); 1318 info.setScrollable(isScrollableForAccessibility()); 1319 } 1320 1321 @Override 1322 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1323 super.onInitializeAccessibilityEvent(event); 1324 event.setScrollable(isScrollableForAccessibility()); 1325 event.setScrollX(mScrollX); 1326 event.setScrollY(mScrollY); 1327 final int convertedContentWidth = contentToViewX(getContentWidth()); 1328 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1329 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1330 final int convertedContentHeight = contentToViewY(getContentHeight()); 1331 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1332 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1333 } 1334 1335 private boolean isScrollableForAccessibility() { 1336 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1337 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1338 } 1339 1340 @Override 1341 public void setOverScrollMode(int mode) { 1342 super.setOverScrollMode(mode); 1343 if (mode != OVER_SCROLL_NEVER) { 1344 if (mOverScrollGlow == null) { 1345 mOverScrollGlow = new OverScrollGlow(this); 1346 } 1347 } else { 1348 mOverScrollGlow = null; 1349 } 1350 } 1351 1352 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1353 final float density = mContext.getResources().getDisplayMetrics().density 1354 * 100 / zoomDensity; 1355 updateDefaultZoomDensity(density); 1356 } 1357 1358 /* package */ void updateDefaultZoomDensity(float density) { 1359 mNavSlop = (int) (16 * density); 1360 mZoomManager.updateDefaultZoomDensity(density); 1361 } 1362 1363 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1364 String password, final Message resumeMsg) { 1365 boolean rVal = false; 1366 if (resumeMsg == null) { 1367 // null resumeMsg implies saving password silently 1368 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1369 } else { 1370 final Message remember = mPrivateHandler.obtainMessage( 1371 REMEMBER_PASSWORD); 1372 remember.getData().putString("host", schemePlusHost); 1373 remember.getData().putString("username", username); 1374 remember.getData().putString("password", password); 1375 remember.obj = resumeMsg; 1376 1377 final Message neverRemember = mPrivateHandler.obtainMessage( 1378 NEVER_REMEMBER_PASSWORD); 1379 neverRemember.getData().putString("host", schemePlusHost); 1380 neverRemember.getData().putString("username", username); 1381 neverRemember.getData().putString("password", password); 1382 neverRemember.obj = resumeMsg; 1383 1384 new AlertDialog.Builder(getContext()) 1385 .setTitle(com.android.internal.R.string.save_password_label) 1386 .setMessage(com.android.internal.R.string.save_password_message) 1387 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1388 new DialogInterface.OnClickListener() { 1389 public void onClick(DialogInterface dialog, int which) { 1390 resumeMsg.sendToTarget(); 1391 } 1392 }) 1393 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1394 new DialogInterface.OnClickListener() { 1395 public void onClick(DialogInterface dialog, int which) { 1396 remember.sendToTarget(); 1397 } 1398 }) 1399 .setNegativeButton(com.android.internal.R.string.save_password_never, 1400 new DialogInterface.OnClickListener() { 1401 public void onClick(DialogInterface dialog, int which) { 1402 neverRemember.sendToTarget(); 1403 } 1404 }) 1405 .setOnCancelListener(new OnCancelListener() { 1406 public void onCancel(DialogInterface dialog) { 1407 resumeMsg.sendToTarget(); 1408 } 1409 }).show(); 1410 // Return true so that WebViewCore will pause while the dialog is 1411 // up. 1412 rVal = true; 1413 } 1414 return rVal; 1415 } 1416 1417 @Override 1418 public void setScrollBarStyle(int style) { 1419 if (style == View.SCROLLBARS_INSIDE_INSET 1420 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1421 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1422 } else { 1423 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1424 } 1425 super.setScrollBarStyle(style); 1426 } 1427 1428 /** 1429 * Specify whether the horizontal scrollbar has overlay style. 1430 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1431 */ 1432 public void setHorizontalScrollbarOverlay(boolean overlay) { 1433 checkThread(); 1434 mOverlayHorizontalScrollbar = overlay; 1435 } 1436 1437 /** 1438 * Specify whether the vertical scrollbar has overlay style. 1439 * @param overlay TRUE if vertical scrollbar should have overlay style. 1440 */ 1441 public void setVerticalScrollbarOverlay(boolean overlay) { 1442 checkThread(); 1443 mOverlayVerticalScrollbar = overlay; 1444 } 1445 1446 /** 1447 * Return whether horizontal scrollbar has overlay style 1448 * @return TRUE if horizontal scrollbar has overlay style. 1449 */ 1450 public boolean overlayHorizontalScrollbar() { 1451 checkThread(); 1452 return mOverlayHorizontalScrollbar; 1453 } 1454 1455 /** 1456 * Return whether vertical scrollbar has overlay style 1457 * @return TRUE if vertical scrollbar has overlay style. 1458 */ 1459 public boolean overlayVerticalScrollbar() { 1460 checkThread(); 1461 return mOverlayVerticalScrollbar; 1462 } 1463 1464 /* 1465 * Return the width of the view where the content of WebView should render 1466 * to. 1467 * Note: this can be called from WebCoreThread. 1468 */ 1469 /* package */ int getViewWidth() { 1470 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1471 return getWidth(); 1472 } else { 1473 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1474 } 1475 } 1476 1477 /** 1478 * returns the height of the titlebarview (if any). Does not care about 1479 * scrolling 1480 * @hide 1481 */ 1482 protected int getTitleHeight() { 1483 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1484 } 1485 1486 /** 1487 * Return the amount of the titlebarview (if any) that is visible 1488 * 1489 * @deprecated This method is now obsolete. 1490 */ 1491 public int getVisibleTitleHeight() { 1492 checkThread(); 1493 return getVisibleTitleHeightImpl(); 1494 } 1495 1496 private int getVisibleTitleHeightImpl() { 1497 // need to restrict mScrollY due to over scroll 1498 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1499 getOverlappingActionModeHeight()); 1500 } 1501 1502 private int mCachedOverlappingActionModeHeight = -1; 1503 1504 private int getOverlappingActionModeHeight() { 1505 if (mFindCallback == null) { 1506 return 0; 1507 } 1508 if (mCachedOverlappingActionModeHeight < 0) { 1509 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1510 mCachedOverlappingActionModeHeight = Math.max(0, 1511 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1512 } 1513 return mCachedOverlappingActionModeHeight; 1514 } 1515 1516 /* 1517 * Return the height of the view where the content of WebView should render 1518 * to. Note that this excludes mTitleBar, if there is one. 1519 * Note: this can be called from WebCoreThread. 1520 */ 1521 /* package */ int getViewHeight() { 1522 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1523 } 1524 1525 int getViewHeightWithTitle() { 1526 int height = getHeight(); 1527 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1528 height -= getHorizontalScrollbarHeight(); 1529 } 1530 return height; 1531 } 1532 1533 /** 1534 * @return The SSL certificate for the main top-level page or null if 1535 * there is no certificate (the site is not secure). 1536 */ 1537 public SslCertificate getCertificate() { 1538 checkThread(); 1539 return mCertificate; 1540 } 1541 1542 /** 1543 * Sets the SSL certificate for the main top-level page. 1544 */ 1545 public void setCertificate(SslCertificate certificate) { 1546 checkThread(); 1547 if (DebugFlags.WEB_VIEW) { 1548 Log.v(LOGTAG, "setCertificate=" + certificate); 1549 } 1550 // here, the certificate can be null (if the site is not secure) 1551 mCertificate = certificate; 1552 } 1553 1554 //------------------------------------------------------------------------- 1555 // Methods called by activity 1556 //------------------------------------------------------------------------- 1557 1558 /** 1559 * Save the username and password for a particular host in the WebView's 1560 * internal database. 1561 * @param host The host that required the credentials. 1562 * @param username The username for the given host. 1563 * @param password The password for the given host. 1564 */ 1565 public void savePassword(String host, String username, String password) { 1566 checkThread(); 1567 mDatabase.setUsernamePassword(host, username, password); 1568 } 1569 1570 /** 1571 * Set the HTTP authentication credentials for a given host and realm. 1572 * 1573 * @param host The host for the credentials. 1574 * @param realm The realm for the credentials. 1575 * @param username The username for the password. If it is null, it means 1576 * password can't be saved. 1577 * @param password The password 1578 */ 1579 public void setHttpAuthUsernamePassword(String host, String realm, 1580 String username, String password) { 1581 checkThread(); 1582 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1583 } 1584 1585 /** 1586 * Retrieve the HTTP authentication username and password for a given 1587 * host & realm pair 1588 * 1589 * @param host The host for which the credentials apply. 1590 * @param realm The realm for which the credentials apply. 1591 * @return String[] if found, String[0] is username, which can be null and 1592 * String[1] is password. Return null if it can't find anything. 1593 */ 1594 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1595 checkThread(); 1596 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1597 } 1598 1599 /** 1600 * Remove Find or Select ActionModes, if active. 1601 */ 1602 private void clearActionModes() { 1603 if (mSelectCallback != null) { 1604 mSelectCallback.finish(); 1605 } 1606 if (mFindCallback != null) { 1607 mFindCallback.finish(); 1608 } 1609 } 1610 1611 /** 1612 * Called to clear state when moving from one page to another, or changing 1613 * in some other way that makes elements associated with the current page 1614 * (such as WebTextView or ActionModes) no longer relevant. 1615 */ 1616 private void clearHelpers() { 1617 clearTextEntry(); 1618 clearActionModes(); 1619 dismissFullScreenMode(); 1620 } 1621 1622 /** 1623 * Destroy the internal state of the WebView. This method should be called 1624 * after the WebView has been removed from the view system. No other 1625 * methods may be called on a WebView after destroy. 1626 */ 1627 public void destroy() { 1628 checkThread(); 1629 destroyImpl(); 1630 } 1631 1632 private void destroyImpl() { 1633 clearHelpers(); 1634 if (mListBoxDialog != null) { 1635 mListBoxDialog.dismiss(); 1636 mListBoxDialog = null; 1637 } 1638 // remove so that it doesn't cause events 1639 if (mWebTextView != null) { 1640 mWebTextView.remove(); 1641 mWebTextView = null; 1642 } 1643 if (mNativeClass != 0) nativeStopGL(); 1644 if (mWebViewCore != null) { 1645 // Set the handlers to null before destroying WebViewCore so no 1646 // more messages will be posted. 1647 mCallbackProxy.setWebViewClient(null); 1648 mCallbackProxy.setWebChromeClient(null); 1649 // Tell WebViewCore to destroy itself 1650 synchronized (this) { 1651 WebViewCore webViewCore = mWebViewCore; 1652 mWebViewCore = null; // prevent using partial webViewCore 1653 webViewCore.destroy(); 1654 } 1655 // Remove any pending messages that might not be serviced yet. 1656 mPrivateHandler.removeCallbacksAndMessages(null); 1657 mCallbackProxy.removeCallbacksAndMessages(null); 1658 // Wake up the WebCore thread just in case it is waiting for a 1659 // JavaScript dialog. 1660 synchronized (mCallbackProxy) { 1661 mCallbackProxy.notify(); 1662 } 1663 } 1664 if (mNativeClass != 0) { 1665 nativeDestroy(); 1666 mNativeClass = 0; 1667 } 1668 } 1669 1670 /** 1671 * Enables platform notifications of data state and proxy changes. 1672 * Notifications are enabled by default. 1673 * 1674 * @deprecated This method is now obsolete. 1675 */ 1676 @Deprecated 1677 public static void enablePlatformNotifications() { 1678 checkThread(); 1679 synchronized (WebView.class) { 1680 Network.enablePlatformNotifications(); 1681 sNotificationsEnabled = true; 1682 Context context = JniUtil.getContext(); 1683 if (context != null) 1684 setupProxyListener(context); 1685 } 1686 } 1687 1688 /** 1689 * Disables platform notifications of data state and proxy changes. 1690 * Notifications are enabled by default. 1691 * 1692 * @deprecated This method is now obsolete. 1693 */ 1694 @Deprecated 1695 public static void disablePlatformNotifications() { 1696 checkThread(); 1697 synchronized (WebView.class) { 1698 Network.disablePlatformNotifications(); 1699 sNotificationsEnabled = false; 1700 Context context = JniUtil.getContext(); 1701 if (context != null) 1702 disableProxyListener(context); 1703 } 1704 } 1705 1706 /** 1707 * Sets JavaScript engine flags. 1708 * 1709 * @param flags JS engine flags in a String 1710 * 1711 * @hide pending API solidification 1712 */ 1713 public void setJsFlags(String flags) { 1714 checkThread(); 1715 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1716 } 1717 1718 /** 1719 * Inform WebView of the network state. This is used to set 1720 * the JavaScript property window.navigator.isOnline and 1721 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1722 * @param networkUp boolean indicating if network is available 1723 */ 1724 public void setNetworkAvailable(boolean networkUp) { 1725 checkThread(); 1726 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1727 networkUp ? 1 : 0, 0); 1728 } 1729 1730 /** 1731 * Inform WebView about the current network type. 1732 * {@hide} 1733 */ 1734 public void setNetworkType(String type, String subtype) { 1735 checkThread(); 1736 Map<String, String> map = new HashMap<String, String>(); 1737 map.put("type", type); 1738 map.put("subtype", subtype); 1739 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1740 } 1741 /** 1742 * Save the state of this WebView used in 1743 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1744 * method no longer stores the display data for this WebView. The previous 1745 * behavior could potentially leak files if {@link #restoreState} was never 1746 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1747 * and restoring the display data. 1748 * @param outState The Bundle to store the WebView state. 1749 * @return The same copy of the back/forward list used to save the state. If 1750 * saveState fails, the returned list will be null. 1751 * @see #savePicture 1752 * @see #restorePicture 1753 */ 1754 public WebBackForwardList saveState(Bundle outState) { 1755 checkThread(); 1756 if (outState == null) { 1757 return null; 1758 } 1759 // We grab a copy of the back/forward list because a client of WebView 1760 // may have invalidated the history list by calling clearHistory. 1761 WebBackForwardList list = copyBackForwardList(); 1762 final int currentIndex = list.getCurrentIndex(); 1763 final int size = list.getSize(); 1764 // We should fail saving the state if the list is empty or the index is 1765 // not in a valid range. 1766 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1767 return null; 1768 } 1769 outState.putInt("index", currentIndex); 1770 // FIXME: This should just be a byte[][] instead of ArrayList but 1771 // Parcel.java does not have the code to handle multi-dimensional 1772 // arrays. 1773 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1774 for (int i = 0; i < size; i++) { 1775 WebHistoryItem item = list.getItemAtIndex(i); 1776 if (null == item) { 1777 // FIXME: this shouldn't happen 1778 // need to determine how item got set to null 1779 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1780 return null; 1781 } 1782 byte[] data = item.getFlattenedData(); 1783 if (data == null) { 1784 // It would be very odd to not have any data for a given history 1785 // item. And we will fail to rebuild the history list without 1786 // flattened data. 1787 return null; 1788 } 1789 history.add(data); 1790 } 1791 outState.putSerializable("history", history); 1792 if (mCertificate != null) { 1793 outState.putBundle("certificate", 1794 SslCertificate.saveState(mCertificate)); 1795 } 1796 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1797 mZoomManager.saveZoomState(outState); 1798 return list; 1799 } 1800 1801 /** 1802 * Save the current display data to the Bundle given. Used in conjunction 1803 * with {@link #saveState}. 1804 * @param b A Bundle to store the display data. 1805 * @param dest The file to store the serialized picture data. Will be 1806 * overwritten with this WebView's picture data. 1807 * @return True if the picture was successfully saved. 1808 * @deprecated This method is now obsolete. 1809 */ 1810 @Deprecated 1811 public boolean savePicture(Bundle b, final File dest) { 1812 checkThread(); 1813 if (dest == null || b == null) { 1814 return false; 1815 } 1816 final Picture p = capturePicture(); 1817 // Use a temporary file while writing to ensure the destination file 1818 // contains valid data. 1819 final File temp = new File(dest.getPath() + ".writing"); 1820 new Thread(new Runnable() { 1821 public void run() { 1822 FileOutputStream out = null; 1823 try { 1824 out = new FileOutputStream(temp); 1825 p.writeToStream(out); 1826 // Writing the picture succeeded, rename the temporary file 1827 // to the destination. 1828 temp.renameTo(dest); 1829 } catch (Exception e) { 1830 // too late to do anything about it. 1831 } finally { 1832 if (out != null) { 1833 try { 1834 out.close(); 1835 } catch (Exception e) { 1836 // Can't do anything about that 1837 } 1838 } 1839 temp.delete(); 1840 } 1841 } 1842 }).start(); 1843 // now update the bundle 1844 b.putInt("scrollX", mScrollX); 1845 b.putInt("scrollY", mScrollY); 1846 mZoomManager.saveZoomState(b); 1847 return true; 1848 } 1849 1850 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1851 int sx = b.getInt("scrollX", 0); 1852 int sy = b.getInt("scrollY", 0); 1853 1854 mDrawHistory = true; 1855 mHistoryPicture = p; 1856 1857 mScrollX = sx; 1858 mScrollY = sy; 1859 mZoomManager.restoreZoomState(b); 1860 final float scale = mZoomManager.getScale(); 1861 mHistoryWidth = Math.round(p.getWidth() * scale); 1862 mHistoryHeight = Math.round(p.getHeight() * scale); 1863 1864 invalidate(); 1865 } 1866 1867 /** 1868 * Restore the display data that was save in {@link #savePicture}. Used in 1869 * conjunction with {@link #restoreState}. 1870 * 1871 * Note that this will not work if the WebView is hardware accelerated. 1872 * @param b A Bundle containing the saved display data. 1873 * @param src The file where the picture data was stored. 1874 * @return True if the picture was successfully restored. 1875 * @deprecated This method is now obsolete. 1876 */ 1877 @Deprecated 1878 public boolean restorePicture(Bundle b, File src) { 1879 checkThread(); 1880 if (src == null || b == null) { 1881 return false; 1882 } 1883 if (!src.exists()) { 1884 return false; 1885 } 1886 try { 1887 final FileInputStream in = new FileInputStream(src); 1888 final Bundle copy = new Bundle(b); 1889 new Thread(new Runnable() { 1890 public void run() { 1891 try { 1892 final Picture p = Picture.createFromStream(in); 1893 if (p != null) { 1894 // Post a runnable on the main thread to update the 1895 // history picture fields. 1896 mPrivateHandler.post(new Runnable() { 1897 public void run() { 1898 restoreHistoryPictureFields(p, copy); 1899 } 1900 }); 1901 } 1902 } finally { 1903 try { 1904 in.close(); 1905 } catch (Exception e) { 1906 // Nothing we can do now. 1907 } 1908 } 1909 } 1910 }).start(); 1911 } catch (FileNotFoundException e){ 1912 e.printStackTrace(); 1913 } 1914 return true; 1915 } 1916 1917 /** 1918 * Saves the view data to the output stream. The output is highly 1919 * version specific, and may not be able to be loaded by newer versions 1920 * of WebView. 1921 * @param stream The {@link OutputStream} to save to 1922 * @return True if saved successfully 1923 * @hide 1924 */ 1925 public boolean saveViewState(OutputStream stream) { 1926 try { 1927 return ViewStateSerializer.serializeViewState(stream, this); 1928 } catch (IOException e) { 1929 Log.w(LOGTAG, "Failed to saveViewState", e); 1930 } 1931 return false; 1932 } 1933 1934 /** 1935 * Loads the view data from the input stream. See 1936 * {@link #saveViewState(OutputStream)} for more information. 1937 * @param stream The {@link InputStream} to load from 1938 * @return True if loaded successfully 1939 * @hide 1940 */ 1941 public boolean loadViewState(InputStream stream) { 1942 try { 1943 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 1944 mBlockWebkitViewMessages = true; 1945 setNewPicture(mLoadedPicture, true); 1946 mLoadedPicture.mViewState = null; 1947 return true; 1948 } catch (IOException e) { 1949 Log.w(LOGTAG, "Failed to loadViewState", e); 1950 } 1951 return false; 1952 } 1953 1954 /** 1955 * Clears the view state set with {@link #loadViewState(InputStream)}. 1956 * This WebView will then switch to showing the content from webkit 1957 * @hide 1958 */ 1959 public void clearViewState() { 1960 mBlockWebkitViewMessages = false; 1961 mLoadedPicture = null; 1962 invalidate(); 1963 } 1964 1965 /** 1966 * Restore the state of this WebView from the given map used in 1967 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1968 * be called to restore the state of the WebView before using the object. If 1969 * it is called after the WebView has had a chance to build state (load 1970 * pages, create a back/forward list, etc.) there may be undesirable 1971 * side-effects. Please note that this method no longer restores the 1972 * display data for this WebView. See {@link #savePicture} and {@link 1973 * #restorePicture} for saving and restoring the display data. 1974 * @param inState The incoming Bundle of state. 1975 * @return The restored back/forward list or null if restoreState failed. 1976 * @see #savePicture 1977 * @see #restorePicture 1978 */ 1979 public WebBackForwardList restoreState(Bundle inState) { 1980 checkThread(); 1981 WebBackForwardList returnList = null; 1982 if (inState == null) { 1983 return returnList; 1984 } 1985 if (inState.containsKey("index") && inState.containsKey("history")) { 1986 mCertificate = SslCertificate.restoreState( 1987 inState.getBundle("certificate")); 1988 1989 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1990 final int index = inState.getInt("index"); 1991 // We can't use a clone of the list because we need to modify the 1992 // shared copy, so synchronize instead to prevent concurrent 1993 // modifications. 1994 synchronized (list) { 1995 final List<byte[]> history = 1996 (List<byte[]>) inState.getSerializable("history"); 1997 final int size = history.size(); 1998 // Check the index bounds so we don't crash in native code while 1999 // restoring the history index. 2000 if (index < 0 || index >= size) { 2001 return null; 2002 } 2003 for (int i = 0; i < size; i++) { 2004 byte[] data = history.remove(0); 2005 if (data == null) { 2006 // If we somehow have null data, we cannot reconstruct 2007 // the item and thus our history list cannot be rebuilt. 2008 return null; 2009 } 2010 WebHistoryItem item = new WebHistoryItem(data); 2011 list.addHistoryItem(item); 2012 } 2013 // Grab the most recent copy to return to the caller. 2014 returnList = copyBackForwardList(); 2015 // Update the copy to have the correct index. 2016 returnList.setCurrentIndex(index); 2017 } 2018 // Restore private browsing setting. 2019 if (inState.getBoolean("privateBrowsingEnabled")) { 2020 getSettings().setPrivateBrowsingEnabled(true); 2021 } 2022 mZoomManager.restoreZoomState(inState); 2023 // Remove all pending messages because we are restoring previous 2024 // state. 2025 mWebViewCore.removeMessages(); 2026 // Send a restore state message. 2027 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2028 } 2029 return returnList; 2030 } 2031 2032 /** 2033 * Load the given URL with the specified additional HTTP headers. 2034 * @param url The URL of the resource to load. 2035 * @param additionalHttpHeaders The additional headers to be used in the 2036 * HTTP request for this URL, specified as a map from name to 2037 * value. Note that if this map contains any of the headers 2038 * that are set by default by the WebView, such as those 2039 * controlling caching, accept types or the User-Agent, their 2040 * values may be overriden by the WebView's defaults. 2041 */ 2042 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2043 checkThread(); 2044 loadUrlImpl(url, additionalHttpHeaders); 2045 } 2046 2047 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2048 switchOutDrawHistory(); 2049 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2050 arg.mUrl = url; 2051 arg.mExtraHeaders = extraHeaders; 2052 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2053 clearHelpers(); 2054 } 2055 2056 /** 2057 * Load the given URL. 2058 * @param url The URL of the resource to load. 2059 */ 2060 public void loadUrl(String url) { 2061 checkThread(); 2062 loadUrlImpl(url); 2063 } 2064 2065 private void loadUrlImpl(String url) { 2066 if (url == null) { 2067 return; 2068 } 2069 loadUrlImpl(url, null); 2070 } 2071 2072 /** 2073 * Load the url with postData using "POST" method into the WebView. If url 2074 * is not a network url, it will be loaded with {link 2075 * {@link #loadUrl(String)} instead. 2076 * 2077 * @param url The url of the resource to load. 2078 * @param postData The data will be passed to "POST" request. 2079 */ 2080 public void postUrl(String url, byte[] postData) { 2081 checkThread(); 2082 if (URLUtil.isNetworkUrl(url)) { 2083 switchOutDrawHistory(); 2084 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2085 arg.mUrl = url; 2086 arg.mPostData = postData; 2087 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2088 clearHelpers(); 2089 } else { 2090 loadUrlImpl(url); 2091 } 2092 } 2093 2094 /** 2095 * Load the given data into the WebView using a 'data' scheme URL. 2096 * <p> 2097 * Note that JavaScript's same origin policy means that script running in a 2098 * page loaded using this method will be unable to access content loaded 2099 * using any scheme other than 'data', including 'http(s)'. To avoid this 2100 * restriction, use {@link 2101 * #loadDataWithBaseURL(String,String,String,String,String) 2102 * loadDataWithBaseURL()} with an appropriate base URL. 2103 * <p> 2104 * If the value of the encoding parameter is 'base64', then the data must 2105 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2106 * octets inside the range of safe URL characters and use the standard %xx 2107 * hex encoding of URLs for octets outside that range. For example, 2108 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2109 * <p> 2110 * The 'data' scheme URL formed by this method uses the default US-ASCII 2111 * charset. If you need need to set a different charset, you should form a 2112 * 'data' scheme URL which explicitly specifies a charset parameter in the 2113 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2114 * Note that the charset obtained from the mediatype portion of a data URL 2115 * always overrides that specified in the HTML or XML document itself. 2116 * @param data A String of data in the given encoding. 2117 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2118 * @param encoding The encoding of the data. 2119 */ 2120 public void loadData(String data, String mimeType, String encoding) { 2121 checkThread(); 2122 loadDataImpl(data, mimeType, encoding); 2123 } 2124 2125 private void loadDataImpl(String data, String mimeType, String encoding) { 2126 StringBuilder dataUrl = new StringBuilder("data:"); 2127 dataUrl.append(mimeType); 2128 if ("base64".equals(encoding)) { 2129 dataUrl.append(";base64"); 2130 } 2131 dataUrl.append(","); 2132 dataUrl.append(data); 2133 loadUrlImpl(dataUrl.toString()); 2134 } 2135 2136 /** 2137 * Load the given data into the WebView, using baseUrl as the base URL for 2138 * the content. The base URL is used both to resolve relative URLs and when 2139 * applying JavaScript's same origin policy. The historyUrl is used for the 2140 * history entry. 2141 * <p> 2142 * Note that content specified in this way can access local device files 2143 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2144 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2145 * <p> 2146 * If the base URL uses the data scheme, this method is equivalent to 2147 * calling {@link #loadData(String,String,String) loadData()} and the 2148 * historyUrl is ignored. 2149 * @param baseUrl URL to use as the page's base URL. If null defaults to 2150 * 'about:blank' 2151 * @param data A String of data in the given encoding. 2152 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2153 * defaults to 'text/html'. 2154 * @param encoding The encoding of the data. 2155 * @param historyUrl URL to use as the history entry, if null defaults to 2156 * 'about:blank'. 2157 */ 2158 public void loadDataWithBaseURL(String baseUrl, String data, 2159 String mimeType, String encoding, String historyUrl) { 2160 checkThread(); 2161 2162 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2163 loadDataImpl(data, mimeType, encoding); 2164 return; 2165 } 2166 switchOutDrawHistory(); 2167 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2168 arg.mBaseUrl = baseUrl; 2169 arg.mData = data; 2170 arg.mMimeType = mimeType; 2171 arg.mEncoding = encoding; 2172 arg.mHistoryUrl = historyUrl; 2173 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2174 clearHelpers(); 2175 } 2176 2177 /** 2178 * Saves the current view as a web archive. 2179 * 2180 * @param filename The filename where the archive should be placed. 2181 */ 2182 public void saveWebArchive(String filename) { 2183 checkThread(); 2184 saveWebArchiveImpl(filename, false, null); 2185 } 2186 2187 /* package */ static class SaveWebArchiveMessage { 2188 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2189 mBasename = basename; 2190 mAutoname = autoname; 2191 mCallback = callback; 2192 } 2193 2194 /* package */ final String mBasename; 2195 /* package */ final boolean mAutoname; 2196 /* package */ final ValueCallback<String> mCallback; 2197 /* package */ String mResultFile; 2198 } 2199 2200 /** 2201 * Saves the current view as a web archive. 2202 * 2203 * @param basename The filename where the archive should be placed. 2204 * @param autoname If false, takes basename to be a file. If true, basename 2205 * is assumed to be a directory in which a filename will be 2206 * chosen according to the url of the current page. 2207 * @param callback Called after the web archive has been saved. The 2208 * parameter for onReceiveValue will either be the filename 2209 * under which the file was saved, or null if saving the 2210 * file failed. 2211 */ 2212 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2213 checkThread(); 2214 saveWebArchiveImpl(basename, autoname, callback); 2215 } 2216 2217 private void saveWebArchiveImpl(String basename, boolean autoname, 2218 ValueCallback<String> callback) { 2219 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2220 new SaveWebArchiveMessage(basename, autoname, callback)); 2221 } 2222 2223 /** 2224 * Stop the current load. 2225 */ 2226 public void stopLoading() { 2227 checkThread(); 2228 // TODO: should we clear all the messages in the queue before sending 2229 // STOP_LOADING? 2230 switchOutDrawHistory(); 2231 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2232 } 2233 2234 /** 2235 * Reload the current url. 2236 */ 2237 public void reload() { 2238 checkThread(); 2239 clearHelpers(); 2240 switchOutDrawHistory(); 2241 mWebViewCore.sendMessage(EventHub.RELOAD); 2242 } 2243 2244 /** 2245 * Return true if this WebView has a back history item. 2246 * @return True iff this WebView has a back history item. 2247 */ 2248 public boolean canGoBack() { 2249 checkThread(); 2250 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2251 synchronized (l) { 2252 if (l.getClearPending()) { 2253 return false; 2254 } else { 2255 return l.getCurrentIndex() > 0; 2256 } 2257 } 2258 } 2259 2260 /** 2261 * Go back in the history of this WebView. 2262 */ 2263 public void goBack() { 2264 checkThread(); 2265 goBackOrForwardImpl(-1); 2266 } 2267 2268 /** 2269 * Return true if this WebView has a forward history item. 2270 * @return True iff this Webview has a forward history item. 2271 */ 2272 public boolean canGoForward() { 2273 checkThread(); 2274 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2275 synchronized (l) { 2276 if (l.getClearPending()) { 2277 return false; 2278 } else { 2279 return l.getCurrentIndex() < l.getSize() - 1; 2280 } 2281 } 2282 } 2283 2284 /** 2285 * Go forward in the history of this WebView. 2286 */ 2287 public void goForward() { 2288 checkThread(); 2289 goBackOrForwardImpl(1); 2290 } 2291 2292 /** 2293 * Return true if the page can go back or forward the given 2294 * number of steps. 2295 * @param steps The negative or positive number of steps to move the 2296 * history. 2297 */ 2298 public boolean canGoBackOrForward(int steps) { 2299 checkThread(); 2300 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2301 synchronized (l) { 2302 if (l.getClearPending()) { 2303 return false; 2304 } else { 2305 int newIndex = l.getCurrentIndex() + steps; 2306 return newIndex >= 0 && newIndex < l.getSize(); 2307 } 2308 } 2309 } 2310 2311 /** 2312 * Go to the history item that is the number of steps away from 2313 * the current item. Steps is negative if backward and positive 2314 * if forward. 2315 * @param steps The number of steps to take back or forward in the back 2316 * forward list. 2317 */ 2318 public void goBackOrForward(int steps) { 2319 checkThread(); 2320 goBackOrForwardImpl(steps); 2321 } 2322 2323 private void goBackOrForwardImpl(int steps) { 2324 goBackOrForward(steps, false); 2325 } 2326 2327 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2328 if (steps != 0) { 2329 clearHelpers(); 2330 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2331 ignoreSnapshot ? 1 : 0); 2332 } 2333 } 2334 2335 /** 2336 * Returns true if private browsing is enabled in this WebView. 2337 */ 2338 public boolean isPrivateBrowsingEnabled() { 2339 checkThread(); 2340 return getSettings().isPrivateBrowsingEnabled(); 2341 } 2342 2343 private void startPrivateBrowsing() { 2344 getSettings().setPrivateBrowsingEnabled(true); 2345 } 2346 2347 private boolean extendScroll(int y) { 2348 int finalY = mScroller.getFinalY(); 2349 int newY = pinLocY(finalY + y); 2350 if (newY == finalY) return false; 2351 mScroller.setFinalY(newY); 2352 mScroller.extendDuration(computeDuration(0, y)); 2353 return true; 2354 } 2355 2356 /** 2357 * Scroll the contents of the view up by half the view size 2358 * @param top true to jump to the top of the page 2359 * @return true if the page was scrolled 2360 */ 2361 public boolean pageUp(boolean top) { 2362 checkThread(); 2363 if (mNativeClass == 0) { 2364 return false; 2365 } 2366 nativeClearCursor(); // start next trackball movement from page edge 2367 if (top) { 2368 // go to the top of the document 2369 return pinScrollTo(mScrollX, 0, true, 0); 2370 } 2371 // Page up 2372 int h = getHeight(); 2373 int y; 2374 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2375 y = -h + PAGE_SCROLL_OVERLAP; 2376 } else { 2377 y = -h / 2; 2378 } 2379 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2380 : extendScroll(y); 2381 } 2382 2383 /** 2384 * Scroll the contents of the view down by half the page size 2385 * @param bottom true to jump to bottom of page 2386 * @return true if the page was scrolled 2387 */ 2388 public boolean pageDown(boolean bottom) { 2389 checkThread(); 2390 if (mNativeClass == 0) { 2391 return false; 2392 } 2393 nativeClearCursor(); // start next trackball movement from page edge 2394 if (bottom) { 2395 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2396 } 2397 // Page down. 2398 int h = getHeight(); 2399 int y; 2400 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2401 y = h - PAGE_SCROLL_OVERLAP; 2402 } else { 2403 y = h / 2; 2404 } 2405 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2406 : extendScroll(y); 2407 } 2408 2409 /** 2410 * Clear the view so that onDraw() will draw nothing but white background, 2411 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2412 */ 2413 public void clearView() { 2414 checkThread(); 2415 mContentWidth = 0; 2416 mContentHeight = 0; 2417 setBaseLayer(0, null, false, false, false); 2418 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2419 } 2420 2421 /** 2422 * Return a new picture that captures the current display of the webview. 2423 * This is a copy of the display, and will be unaffected if the webview 2424 * later loads a different URL. 2425 * 2426 * @return a picture containing the current contents of the view. Note this 2427 * picture is of the entire document, and is not restricted to the 2428 * bounds of the view. 2429 */ 2430 public Picture capturePicture() { 2431 checkThread(); 2432 if (mNativeClass == 0) return null; 2433 Picture result = new Picture(); 2434 nativeCopyBaseContentToPicture(result); 2435 return result; 2436 } 2437 2438 /** 2439 * Return true if the browser is displaying a TextView for text input. 2440 */ 2441 private boolean inEditingMode() { 2442 return mWebTextView != null && mWebTextView.getParent() != null; 2443 } 2444 2445 /** 2446 * Remove the WebTextView. 2447 */ 2448 private void clearTextEntry() { 2449 if (inEditingMode()) { 2450 mWebTextView.remove(); 2451 } else { 2452 // The keyboard may be open with the WebView as the served view 2453 hideSoftKeyboard(); 2454 } 2455 } 2456 2457 /** 2458 * Return the current scale of the WebView 2459 * @return The current scale. 2460 */ 2461 public float getScale() { 2462 checkThread(); 2463 return mZoomManager.getScale(); 2464 } 2465 2466 // Called by JNI. Returns the scale to apply to the text selection handles 2467 /* package */ float getTextHandleScale() { 2468 float density = mContext.getResources().getDisplayMetrics().density; 2469 return density / getScale(); 2470 } 2471 2472 /** 2473 * Return the reading level scale of the WebView 2474 * @return The reading level scale. 2475 */ 2476 /*package*/ float getReadingLevelScale() { 2477 return mZoomManager.getReadingLevelScale(); 2478 } 2479 2480 /** 2481 * Set the initial scale for the WebView. 0 means default. If 2482 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2483 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2484 * WebView starts with this value as initial scale. 2485 * Please note that unlike the scale properties in the viewport meta tag, 2486 * this method doesn't take the screen density into account. 2487 * 2488 * @param scaleInPercent The initial scale in percent. 2489 */ 2490 public void setInitialScale(int scaleInPercent) { 2491 checkThread(); 2492 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2493 } 2494 2495 /** 2496 * Invoke the graphical zoom picker widget for this WebView. This will 2497 * result in the zoom widget appearing on the screen to control the zoom 2498 * level of this WebView. 2499 */ 2500 public void invokeZoomPicker() { 2501 checkThread(); 2502 if (!getSettings().supportZoom()) { 2503 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2504 return; 2505 } 2506 clearHelpers(); 2507 mZoomManager.invokeZoomPicker(); 2508 } 2509 2510 /** 2511 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2512 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2513 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2514 * anchor does not have a url or if it is a JavaScript url, the type will 2515 * be UNKNOWN_TYPE and the url has to be retrieved through 2516 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2517 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2518 * the "extra" field. A type of 2519 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2520 * a child node. If a phone number is found, the HitTestResult type is set 2521 * to PHONE_TYPE and the phone number is set in the "extra" field of 2522 * HitTestResult. If a map address is found, the HitTestResult type is set 2523 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2524 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2525 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2526 * HitTestResult type is set to UNKNOWN_TYPE. 2527 */ 2528 public HitTestResult getHitTestResult() { 2529 checkThread(); 2530 return hitTestResult(mInitialHitTestResult); 2531 } 2532 2533 private HitTestResult hitTestResult(HitTestResult fallback) { 2534 if (mNativeClass == 0) { 2535 return null; 2536 } 2537 2538 HitTestResult result = new HitTestResult(); 2539 if (nativeHasCursorNode()) { 2540 if (nativeCursorIsTextInput()) { 2541 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2542 } else { 2543 String text = nativeCursorText(); 2544 if (text != null) { 2545 if (text.startsWith(SCHEME_TEL)) { 2546 result.setType(HitTestResult.PHONE_TYPE); 2547 result.setExtra(text.substring(SCHEME_TEL.length())); 2548 } else if (text.startsWith(SCHEME_MAILTO)) { 2549 result.setType(HitTestResult.EMAIL_TYPE); 2550 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2551 } else if (text.startsWith(SCHEME_GEO)) { 2552 result.setType(HitTestResult.GEO_TYPE); 2553 result.setExtra(URLDecoder.decode(text 2554 .substring(SCHEME_GEO.length()))); 2555 } else if (nativeCursorIsAnchor()) { 2556 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2557 result.setExtra(text); 2558 } 2559 } 2560 } 2561 } else if (fallback != null) { 2562 /* If webkit causes a rebuild while the long press is in progress, 2563 * the cursor node may be reset, even if it is still around. This 2564 * uses the cursor node saved when the touch began. Since the 2565 * nativeImageURI below only changes the result if it is successful, 2566 * this uses the data beneath the touch if available or the original 2567 * tap data otherwise. 2568 */ 2569 Log.v(LOGTAG, "hitTestResult use fallback"); 2570 result = fallback; 2571 } 2572 int type = result.getType(); 2573 if (type == HitTestResult.UNKNOWN_TYPE 2574 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2575 // Now check to see if it is an image. 2576 int contentX = viewToContentX(mLastTouchX + mScrollX); 2577 int contentY = viewToContentY(mLastTouchY + mScrollY); 2578 String text = nativeImageURI(contentX, contentY); 2579 if (text != null) { 2580 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2581 HitTestResult.IMAGE_TYPE : 2582 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2583 result.setExtra(text); 2584 } 2585 } 2586 return result; 2587 } 2588 2589 // Called by JNI when the DOM has changed the focus. Clear the focus so 2590 // that new keys will go to the newly focused field 2591 private void domChangedFocus() { 2592 if (inEditingMode()) { 2593 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2594 } 2595 } 2596 /** 2597 * Request the anchor or image element URL at the last tapped point. 2598 * If hrefMsg is null, this method returns immediately and does not 2599 * dispatch hrefMsg to its target. If the tapped point hits an image, 2600 * an anchor, or an image in an anchor, the message associates 2601 * strings in named keys in its data. The value paired with the key 2602 * may be an empty string. 2603 * 2604 * @param hrefMsg This message will be dispatched with the result of the 2605 * request. The message data contains three keys: 2606 * - "url" returns the anchor's href attribute. 2607 * - "title" returns the anchor's text. 2608 * - "src" returns the image's src attribute. 2609 */ 2610 public void requestFocusNodeHref(Message hrefMsg) { 2611 checkThread(); 2612 if (hrefMsg == null) { 2613 return; 2614 } 2615 int contentX = viewToContentX(mLastTouchX + mScrollX); 2616 int contentY = viewToContentY(mLastTouchY + mScrollY); 2617 if (nativeHasCursorNode()) { 2618 Rect cursorBounds = nativeGetCursorRingBounds(); 2619 if (!cursorBounds.contains(contentX, contentY)) { 2620 int slop = viewToContentDimension(mNavSlop); 2621 cursorBounds.inset(-slop, -slop); 2622 if (cursorBounds.contains(contentX, contentY)) { 2623 contentX = (int) cursorBounds.centerX(); 2624 contentY = (int) cursorBounds.centerY(); 2625 } 2626 } 2627 } 2628 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2629 contentX, contentY, hrefMsg); 2630 } 2631 2632 /** 2633 * Request the url of the image last touched by the user. msg will be sent 2634 * to its target with a String representing the url as its object. 2635 * 2636 * @param msg This message will be dispatched with the result of the request 2637 * as the data member with "url" as key. The result can be null. 2638 */ 2639 public void requestImageRef(Message msg) { 2640 checkThread(); 2641 if (0 == mNativeClass) return; // client isn't initialized 2642 int contentX = viewToContentX(mLastTouchX + mScrollX); 2643 int contentY = viewToContentY(mLastTouchY + mScrollY); 2644 String ref = nativeImageURI(contentX, contentY); 2645 Bundle data = msg.getData(); 2646 data.putString("url", ref); 2647 msg.setData(data); 2648 msg.sendToTarget(); 2649 } 2650 2651 static int pinLoc(int x, int viewMax, int docMax) { 2652// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2653 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2654 // pin the short document to the top/left of the screen 2655 x = 0; 2656// Log.d(LOGTAG, "--- center " + x); 2657 } else if (x < 0) { 2658 x = 0; 2659// Log.d(LOGTAG, "--- zero"); 2660 } else if (x + viewMax > docMax) { 2661 x = docMax - viewMax; 2662// Log.d(LOGTAG, "--- pin " + x); 2663 } 2664 return x; 2665 } 2666 2667 // Expects x in view coordinates 2668 int pinLocX(int x) { 2669 if (mInOverScrollMode) return x; 2670 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2671 } 2672 2673 // Expects y in view coordinates 2674 int pinLocY(int y) { 2675 if (mInOverScrollMode) return y; 2676 return pinLoc(y, getViewHeightWithTitle(), 2677 computeRealVerticalScrollRange() + getTitleHeight()); 2678 } 2679 2680 /** 2681 * A title bar which is embedded in this WebView, and scrolls along with it 2682 * vertically, but not horizontally. 2683 */ 2684 private View mTitleBar; 2685 2686 /** 2687 * the title bar rendering gravity 2688 */ 2689 private int mTitleGravity; 2690 2691 /** 2692 * Add or remove a title bar to be embedded into the WebView, and scroll 2693 * along with it vertically, while remaining in view horizontally. Pass 2694 * null to remove the title bar from the WebView, and return to drawing 2695 * the WebView normally without translating to account for the title bar. 2696 * @hide 2697 */ 2698 public void setEmbeddedTitleBar(View v) { 2699 if (mTitleBar == v) return; 2700 if (mTitleBar != null) { 2701 removeView(mTitleBar); 2702 } 2703 if (null != v) { 2704 addView(v, new AbsoluteLayout.LayoutParams( 2705 ViewGroup.LayoutParams.MATCH_PARENT, 2706 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2707 } 2708 mTitleBar = v; 2709 } 2710 2711 /** 2712 * Set where to render the embedded title bar 2713 * NO_GRAVITY at the top of the page 2714 * TOP at the top of the screen 2715 * @hide 2716 */ 2717 public void setTitleBarGravity(int gravity) { 2718 mTitleGravity = gravity; 2719 // force refresh 2720 invalidate(); 2721 } 2722 2723 /** 2724 * Given a distance in view space, convert it to content space. Note: this 2725 * does not reflect translation, just scaling, so this should not be called 2726 * with coordinates, but should be called for dimensions like width or 2727 * height. 2728 */ 2729 private int viewToContentDimension(int d) { 2730 return Math.round(d * mZoomManager.getInvScale()); 2731 } 2732 2733 /** 2734 * Given an x coordinate in view space, convert it to content space. Also 2735 * may be used for absolute heights (such as for the WebTextView's 2736 * textSize, which is unaffected by the height of the title bar). 2737 */ 2738 /*package*/ int viewToContentX(int x) { 2739 return viewToContentDimension(x); 2740 } 2741 2742 /** 2743 * Given a y coordinate in view space, convert it to content space. 2744 * Takes into account the height of the title bar if there is one 2745 * embedded into the WebView. 2746 */ 2747 /*package*/ int viewToContentY(int y) { 2748 return viewToContentDimension(y - getTitleHeight()); 2749 } 2750 2751 /** 2752 * Given a x coordinate in view space, convert it to content space. 2753 * Returns the result as a float. 2754 */ 2755 private float viewToContentXf(int x) { 2756 return x * mZoomManager.getInvScale(); 2757 } 2758 2759 /** 2760 * Given a y coordinate in view space, convert it to content space. 2761 * Takes into account the height of the title bar if there is one 2762 * embedded into the WebView. Returns the result as a float. 2763 */ 2764 private float viewToContentYf(int y) { 2765 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2766 } 2767 2768 /** 2769 * Given a distance in content space, convert it to view space. Note: this 2770 * does not reflect translation, just scaling, so this should not be called 2771 * with coordinates, but should be called for dimensions like width or 2772 * height. 2773 */ 2774 /*package*/ int contentToViewDimension(int d) { 2775 return Math.round(d * mZoomManager.getScale()); 2776 } 2777 2778 /** 2779 * Given an x coordinate in content space, convert it to view 2780 * space. 2781 */ 2782 /*package*/ int contentToViewX(int x) { 2783 return contentToViewDimension(x); 2784 } 2785 2786 /** 2787 * Given a y coordinate in content space, convert it to view 2788 * space. Takes into account the height of the title bar. 2789 */ 2790 /*package*/ int contentToViewY(int y) { 2791 return contentToViewDimension(y) + getTitleHeight(); 2792 } 2793 2794 private Rect contentToViewRect(Rect x) { 2795 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2796 contentToViewX(x.right), contentToViewY(x.bottom)); 2797 } 2798 2799 /* To invalidate a rectangle in content coordinates, we need to transform 2800 the rect into view coordinates, so we can then call invalidate(...). 2801 2802 Normally, we would just call contentToView[XY](...), which eventually 2803 calls Math.round(coordinate * mActualScale). However, for invalidates, 2804 we need to account for the slop that occurs with antialiasing. To 2805 address that, we are a little more liberal in the size of the rect that 2806 we invalidate. 2807 2808 This liberal calculation calls floor() for the top/left, and ceil() for 2809 the bottom/right coordinates. This catches the possible extra pixels of 2810 antialiasing that we might have missed with just round(). 2811 */ 2812 2813 // Called by JNI to invalidate the View, given rectangle coordinates in 2814 // content space 2815 private void viewInvalidate(int l, int t, int r, int b) { 2816 final float scale = mZoomManager.getScale(); 2817 final int dy = getTitleHeight(); 2818 invalidate((int)Math.floor(l * scale), 2819 (int)Math.floor(t * scale) + dy, 2820 (int)Math.ceil(r * scale), 2821 (int)Math.ceil(b * scale) + dy); 2822 } 2823 2824 // Called by JNI to invalidate the View after a delay, given rectangle 2825 // coordinates in content space 2826 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2827 final float scale = mZoomManager.getScale(); 2828 final int dy = getTitleHeight(); 2829 postInvalidateDelayed(delay, 2830 (int)Math.floor(l * scale), 2831 (int)Math.floor(t * scale) + dy, 2832 (int)Math.ceil(r * scale), 2833 (int)Math.ceil(b * scale) + dy); 2834 } 2835 2836 private void invalidateContentRect(Rect r) { 2837 viewInvalidate(r.left, r.top, r.right, r.bottom); 2838 } 2839 2840 // stop the scroll animation, and don't let a subsequent fling add 2841 // to the existing velocity 2842 private void abortAnimation() { 2843 mScroller.abortAnimation(); 2844 mLastVelocity = 0; 2845 } 2846 2847 /* call from webcoreview.draw(), so we're still executing in the UI thread 2848 */ 2849 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2850 2851 // premature data from webkit, ignore 2852 if ((w | h) == 0) { 2853 return; 2854 } 2855 2856 // don't abort a scroll animation if we didn't change anything 2857 if (mContentWidth != w || mContentHeight != h) { 2858 // record new dimensions 2859 mContentWidth = w; 2860 mContentHeight = h; 2861 // If history Picture is drawn, don't update scroll. They will be 2862 // updated when we get out of that mode. 2863 if (!mDrawHistory) { 2864 // repin our scroll, taking into account the new content size 2865 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2866 if (!mScroller.isFinished()) { 2867 // We are in the middle of a scroll. Repin the final scroll 2868 // position. 2869 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2870 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2871 } 2872 } 2873 } 2874 contentSizeChanged(updateLayout); 2875 } 2876 2877 // Used to avoid sending many visible rect messages. 2878 private Rect mLastVisibleRectSent = new Rect(); 2879 private Rect mLastGlobalRect = new Rect(); 2880 private Rect mVisibleRect = new Rect(); 2881 private Rect mGlobalVisibleRect = new Rect(); 2882 private Point mScrollOffset = new Point(); 2883 2884 Rect sendOurVisibleRect() { 2885 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2886 calcOurContentVisibleRect(mVisibleRect); 2887 // Rect.equals() checks for null input. 2888 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 2889 if (!mBlockWebkitViewMessages) { 2890 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 2891 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2892 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2893 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 2894 } 2895 mLastVisibleRectSent.set(mVisibleRect); 2896 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2897 } 2898 if (getGlobalVisibleRect(mGlobalVisibleRect) 2899 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 2900 if (DebugFlags.WEB_VIEW) { 2901 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 2902 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 2903 + mGlobalVisibleRect.bottom); 2904 } 2905 // TODO: the global offset is only used by windowRect() 2906 // in ChromeClientAndroid ; other clients such as touch 2907 // and mouse events could return view + screen relative points. 2908 if (!mBlockWebkitViewMessages) { 2909 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 2910 } 2911 mLastGlobalRect.set(mGlobalVisibleRect); 2912 } 2913 return mVisibleRect; 2914 } 2915 2916 private Point mGlobalVisibleOffset = new Point(); 2917 // Sets r to be the visible rectangle of our webview in view coordinates 2918 private void calcOurVisibleRect(Rect r) { 2919 getGlobalVisibleRect(r, mGlobalVisibleOffset); 2920 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 2921 } 2922 2923 // Sets r to be our visible rectangle in content coordinates 2924 private void calcOurContentVisibleRect(Rect r) { 2925 calcOurVisibleRect(r); 2926 r.left = viewToContentX(r.left); 2927 // viewToContentY will remove the total height of the title bar. Add 2928 // the visible height back in to account for the fact that if the title 2929 // bar is partially visible, the part of the visible rect which is 2930 // displaying our content is displaced by that amount. 2931 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 2932 r.right = viewToContentX(r.right); 2933 r.bottom = viewToContentY(r.bottom); 2934 } 2935 2936 private Rect mContentVisibleRect = new Rect(); 2937 // Sets r to be our visible rectangle in content coordinates. We use this 2938 // method on the native side to compute the position of the fixed layers. 2939 // Uses floating coordinates (necessary to correctly place elements when 2940 // the scale factor is not 1) 2941 private void calcOurContentVisibleRectF(RectF r) { 2942 calcOurVisibleRect(mContentVisibleRect); 2943 r.left = viewToContentXf(mContentVisibleRect.left); 2944 // viewToContentY will remove the total height of the title bar. Add 2945 // the visible height back in to account for the fact that if the title 2946 // bar is partially visible, the part of the visible rect which is 2947 // displaying our content is displaced by that amount. 2948 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 2949 r.right = viewToContentXf(mContentVisibleRect.right); 2950 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 2951 } 2952 2953 static class ViewSizeData { 2954 int mWidth; 2955 int mHeight; 2956 float mHeightWidthRatio; 2957 int mActualViewHeight; 2958 int mTextWrapWidth; 2959 int mAnchorX; 2960 int mAnchorY; 2961 float mScale; 2962 boolean mIgnoreHeight; 2963 } 2964 2965 /** 2966 * Compute unzoomed width and height, and if they differ from the last 2967 * values we sent, send them to webkit (to be used as new viewport) 2968 * 2969 * @param force ensures that the message is sent to webkit even if the width 2970 * or height has not changed since the last message 2971 * 2972 * @return true if new values were sent 2973 */ 2974 boolean sendViewSizeZoom(boolean force) { 2975 if (mBlockWebkitViewMessages) return false; 2976 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2977 2978 int viewWidth = getViewWidth(); 2979 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2980 // This height could be fixed and be different from actual visible height. 2981 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2982 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2983 // Make the ratio more accurate than (newHeight / newWidth), since the 2984 // latter both are calculated and rounded. 2985 float heightWidthRatio = (float) viewHeight / viewWidth; 2986 /* 2987 * Because the native side may have already done a layout before the 2988 * View system was able to measure us, we have to send a height of 0 to 2989 * remove excess whitespace when we grow our width. This will trigger a 2990 * layout and a change in content size. This content size change will 2991 * mean that contentSizeChanged will either call this method directly or 2992 * indirectly from onSizeChanged. 2993 */ 2994 if (newWidth > mLastWidthSent && mWrapContent) { 2995 newHeight = 0; 2996 heightWidthRatio = 0; 2997 } 2998 // Actual visible content height. 2999 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3000 // Avoid sending another message if the dimensions have not changed. 3001 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3002 actualViewHeight != mLastActualHeightSent) { 3003 ViewSizeData data = new ViewSizeData(); 3004 data.mWidth = newWidth; 3005 data.mHeight = newHeight; 3006 data.mHeightWidthRatio = heightWidthRatio; 3007 data.mActualViewHeight = actualViewHeight; 3008 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3009 data.mScale = mZoomManager.getScale(); 3010 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3011 && !mHeightCanMeasure; 3012 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3013 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3014 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3015 mLastWidthSent = newWidth; 3016 mLastHeightSent = newHeight; 3017 mLastActualHeightSent = actualViewHeight; 3018 mZoomManager.clearDocumentAnchor(); 3019 return true; 3020 } 3021 return false; 3022 } 3023 3024 /** 3025 * Update the double-tap zoom. 3026 */ 3027 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3028 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3029 } 3030 3031 private int computeRealHorizontalScrollRange() { 3032 if (mDrawHistory) { 3033 return mHistoryWidth; 3034 } else { 3035 // to avoid rounding error caused unnecessary scrollbar, use floor 3036 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3037 } 3038 } 3039 3040 @Override 3041 protected int computeHorizontalScrollRange() { 3042 int range = computeRealHorizontalScrollRange(); 3043 3044 // Adjust reported range if overscrolled to compress the scroll bars 3045 final int scrollX = mScrollX; 3046 final int overscrollRight = computeMaxScrollX(); 3047 if (scrollX < 0) { 3048 range -= scrollX; 3049 } else if (scrollX > overscrollRight) { 3050 range += scrollX - overscrollRight; 3051 } 3052 3053 return range; 3054 } 3055 3056 @Override 3057 protected int computeHorizontalScrollOffset() { 3058 return Math.max(mScrollX, 0); 3059 } 3060 3061 private int computeRealVerticalScrollRange() { 3062 if (mDrawHistory) { 3063 return mHistoryHeight; 3064 } else { 3065 // to avoid rounding error caused unnecessary scrollbar, use floor 3066 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3067 } 3068 } 3069 3070 @Override 3071 protected int computeVerticalScrollRange() { 3072 int range = computeRealVerticalScrollRange(); 3073 3074 // Adjust reported range if overscrolled to compress the scroll bars 3075 final int scrollY = mScrollY; 3076 final int overscrollBottom = computeMaxScrollY(); 3077 if (scrollY < 0) { 3078 range -= scrollY; 3079 } else if (scrollY > overscrollBottom) { 3080 range += scrollY - overscrollBottom; 3081 } 3082 3083 return range; 3084 } 3085 3086 @Override 3087 protected int computeVerticalScrollOffset() { 3088 return Math.max(mScrollY - getTitleHeight(), 0); 3089 } 3090 3091 @Override 3092 protected int computeVerticalScrollExtent() { 3093 return getViewHeight(); 3094 } 3095 3096 /** @hide */ 3097 @Override 3098 protected void onDrawVerticalScrollBar(Canvas canvas, 3099 Drawable scrollBar, 3100 int l, int t, int r, int b) { 3101 if (mScrollY < 0) { 3102 t -= mScrollY; 3103 } 3104 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3105 scrollBar.draw(canvas); 3106 } 3107 3108 @Override 3109 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3110 boolean clampedY) { 3111 // Special-case layer scrolling so that we do not trigger normal scroll 3112 // updating. 3113 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3114 scrollLayerTo(scrollX, scrollY); 3115 return; 3116 } 3117 mInOverScrollMode = false; 3118 int maxX = computeMaxScrollX(); 3119 int maxY = computeMaxScrollY(); 3120 if (maxX == 0) { 3121 // do not over scroll x if the page just fits the screen 3122 scrollX = pinLocX(scrollX); 3123 } else if (scrollX < 0 || scrollX > maxX) { 3124 mInOverScrollMode = true; 3125 } 3126 if (scrollY < 0 || scrollY > maxY) { 3127 mInOverScrollMode = true; 3128 } 3129 3130 int oldX = mScrollX; 3131 int oldY = mScrollY; 3132 3133 super.scrollTo(scrollX, scrollY); 3134 3135 if (mOverScrollGlow != null) { 3136 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3137 } 3138 } 3139 3140 /** 3141 * Get the url for the current page. This is not always the same as the url 3142 * passed to WebViewClient.onPageStarted because although the load for 3143 * that url has begun, the current page may not have changed. 3144 * @return The url for the current page. 3145 */ 3146 public String getUrl() { 3147 checkThread(); 3148 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3149 return h != null ? h.getUrl() : null; 3150 } 3151 3152 /** 3153 * Get the original url for the current page. This is not always the same 3154 * as the url passed to WebViewClient.onPageStarted because although the 3155 * load for that url has begun, the current page may not have changed. 3156 * Also, there may have been redirects resulting in a different url to that 3157 * originally requested. 3158 * @return The url that was originally requested for the current page. 3159 */ 3160 public String getOriginalUrl() { 3161 checkThread(); 3162 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3163 return h != null ? h.getOriginalUrl() : null; 3164 } 3165 3166 /** 3167 * Get the title for the current page. This is the title of the current page 3168 * until WebViewClient.onReceivedTitle is called. 3169 * @return The title for the current page. 3170 */ 3171 public String getTitle() { 3172 checkThread(); 3173 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3174 return h != null ? h.getTitle() : null; 3175 } 3176 3177 /** 3178 * Get the favicon for the current page. This is the favicon of the current 3179 * page until WebViewClient.onReceivedIcon is called. 3180 * @return The favicon for the current page. 3181 */ 3182 public Bitmap getFavicon() { 3183 checkThread(); 3184 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3185 return h != null ? h.getFavicon() : null; 3186 } 3187 3188 /** 3189 * Get the touch icon url for the apple-touch-icon <link> element, or 3190 * a URL on this site's server pointing to the standard location of a 3191 * touch icon. 3192 * @hide 3193 */ 3194 public String getTouchIconUrl() { 3195 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3196 return h != null ? h.getTouchIconUrl() : null; 3197 } 3198 3199 /** 3200 * Get the progress for the current page. 3201 * @return The progress for the current page between 0 and 100. 3202 */ 3203 public int getProgress() { 3204 checkThread(); 3205 return mCallbackProxy.getProgress(); 3206 } 3207 3208 /** 3209 * @return the height of the HTML content. 3210 */ 3211 public int getContentHeight() { 3212 checkThread(); 3213 return mContentHeight; 3214 } 3215 3216 /** 3217 * @return the width of the HTML content. 3218 * @hide 3219 */ 3220 public int getContentWidth() { 3221 return mContentWidth; 3222 } 3223 3224 /** 3225 * @hide 3226 */ 3227 public int getPageBackgroundColor() { 3228 return nativeGetBackgroundColor(); 3229 } 3230 3231 /** 3232 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3233 * is a global requests, not restricted to just this webview. This can be 3234 * useful if the application has been paused. 3235 */ 3236 public void pauseTimers() { 3237 checkThread(); 3238 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3239 } 3240 3241 /** 3242 * Resume all layout, parsing, and JavaScript timers for all webviews. 3243 * This will resume dispatching all timers. 3244 */ 3245 public void resumeTimers() { 3246 checkThread(); 3247 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3248 } 3249 3250 /** 3251 * Call this to pause any extra processing associated with this WebView and 3252 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3253 * is taken offscreen, this could be called to reduce unnecessary CPU or 3254 * network traffic. When the WebView is again "active", call onResume(). 3255 * 3256 * Note that this differs from pauseTimers(), which affects all WebViews. 3257 */ 3258 public void onPause() { 3259 checkThread(); 3260 if (!mIsPaused) { 3261 mIsPaused = true; 3262 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3263 // We want to pause the current playing video when switching out 3264 // from the current WebView/tab. 3265 if (mHTML5VideoViewProxy != null) { 3266 mHTML5VideoViewProxy.pauseAndDispatch(); 3267 } 3268 if (mNativeClass != 0) { 3269 nativeSetPauseDrawing(mNativeClass, true); 3270 } 3271 } 3272 } 3273 3274 @Override 3275 protected void onWindowVisibilityChanged(int visibility) { 3276 super.onWindowVisibilityChanged(visibility); 3277 updateDrawingState(); 3278 } 3279 3280 void updateDrawingState() { 3281 if (mNativeClass == 0 || mIsPaused) return; 3282 if (getWindowVisibility() != VISIBLE) { 3283 nativeSetPauseDrawing(mNativeClass, true); 3284 } else if (getVisibility() != VISIBLE) { 3285 nativeSetPauseDrawing(mNativeClass, true); 3286 } else { 3287 nativeSetPauseDrawing(mNativeClass, false); 3288 } 3289 } 3290 3291 /** 3292 * Call this to resume a WebView after a previous call to onPause(). 3293 */ 3294 public void onResume() { 3295 checkThread(); 3296 if (mIsPaused) { 3297 mIsPaused = false; 3298 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3299 if (mNativeClass != 0) { 3300 nativeSetPauseDrawing(mNativeClass, false); 3301 } 3302 } 3303 } 3304 3305 /** 3306 * Returns true if the view is paused, meaning onPause() was called. Calling 3307 * onResume() sets the paused state back to false. 3308 * @hide 3309 */ 3310 public boolean isPaused() { 3311 return mIsPaused; 3312 } 3313 3314 /** 3315 * Call this to inform the view that memory is low so that it can 3316 * free any available memory. 3317 */ 3318 public void freeMemory() { 3319 checkThread(); 3320 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3321 } 3322 3323 /** 3324 * Clear the resource cache. Note that the cache is per-application, so 3325 * this will clear the cache for all WebViews used. 3326 * 3327 * @param includeDiskFiles If false, only the RAM cache is cleared. 3328 */ 3329 public void clearCache(boolean includeDiskFiles) { 3330 checkThread(); 3331 // Note: this really needs to be a static method as it clears cache for all 3332 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3333 // we can't make this static. 3334 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3335 includeDiskFiles ? 1 : 0, 0); 3336 } 3337 3338 /** 3339 * Make sure that clearing the form data removes the adapter from the 3340 * currently focused textfield if there is one. 3341 */ 3342 public void clearFormData() { 3343 checkThread(); 3344 if (inEditingMode()) { 3345 mWebTextView.setAdapterCustom(null); 3346 } 3347 } 3348 3349 /** 3350 * Tell the WebView to clear its internal back/forward list. 3351 */ 3352 public void clearHistory() { 3353 checkThread(); 3354 mCallbackProxy.getBackForwardList().setClearPending(); 3355 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3356 } 3357 3358 /** 3359 * Clear the SSL preferences table stored in response to proceeding with SSL 3360 * certificate errors. 3361 */ 3362 public void clearSslPreferences() { 3363 checkThread(); 3364 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3365 } 3366 3367 /** 3368 * Return the WebBackForwardList for this WebView. This contains the 3369 * back/forward list for use in querying each item in the history stack. 3370 * This is a copy of the private WebBackForwardList so it contains only a 3371 * snapshot of the current state. Multiple calls to this method may return 3372 * different objects. The object returned from this method will not be 3373 * updated to reflect any new state. 3374 */ 3375 public WebBackForwardList copyBackForwardList() { 3376 checkThread(); 3377 return mCallbackProxy.getBackForwardList().clone(); 3378 } 3379 3380 /* 3381 * Highlight and scroll to the next occurance of String in findAll. 3382 * Wraps the page infinitely, and scrolls. Must be called after 3383 * calling findAll. 3384 * 3385 * @param forward Direction to search. 3386 */ 3387 public void findNext(boolean forward) { 3388 checkThread(); 3389 if (0 == mNativeClass) return; // client isn't initialized 3390 nativeFindNext(forward); 3391 } 3392 3393 /* 3394 * Find all instances of find on the page and highlight them. 3395 * @param find String to find. 3396 * @return int The number of occurances of the String "find" 3397 * that were found. 3398 */ 3399 public int findAll(String find) { 3400 checkThread(); 3401 if (0 == mNativeClass) return 0; // client isn't initialized 3402 int result = find != null ? nativeFindAll(find.toLowerCase(), 3403 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3404 invalidate(); 3405 mLastFind = find; 3406 return result; 3407 } 3408 3409 /** 3410 * Start an ActionMode for finding text in this WebView. Only works if this 3411 * WebView is attached to the view system. 3412 * @param text If non-null, will be the initial text to search for. 3413 * Otherwise, the last String searched for in this WebView will 3414 * be used to start. 3415 * @param showIme If true, show the IME, assuming the user will begin typing. 3416 * If false and text is non-null, perform a find all. 3417 * @return boolean True if the find dialog is shown, false otherwise. 3418 */ 3419 public boolean showFindDialog(String text, boolean showIme) { 3420 checkThread(); 3421 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3422 if (getParent() == null || startActionMode(callback) == null) { 3423 // Could not start the action mode, so end Find on page 3424 return false; 3425 } 3426 mCachedOverlappingActionModeHeight = -1; 3427 mFindCallback = callback; 3428 setFindIsUp(true); 3429 mFindCallback.setWebView(this); 3430 if (showIme) { 3431 mFindCallback.showSoftInput(); 3432 } else if (text != null) { 3433 mFindCallback.setText(text); 3434 mFindCallback.findAll(); 3435 return true; 3436 } 3437 if (text == null) { 3438 text = mLastFind; 3439 } 3440 if (text != null) { 3441 mFindCallback.setText(text); 3442 } 3443 return true; 3444 } 3445 3446 /** 3447 * Keep track of the find callback so that we can remove its titlebar if 3448 * necessary. 3449 */ 3450 private FindActionModeCallback mFindCallback; 3451 3452 /** 3453 * Toggle whether the find dialog is showing, for both native and Java. 3454 */ 3455 private void setFindIsUp(boolean isUp) { 3456 mFindIsUp = isUp; 3457 if (0 == mNativeClass) return; // client isn't initialized 3458 nativeSetFindIsUp(isUp); 3459 } 3460 3461 /** 3462 * Return the index of the currently highlighted match. 3463 */ 3464 int findIndex() { 3465 if (0 == mNativeClass) return -1; 3466 return nativeFindIndex(); 3467 } 3468 3469 // Used to know whether the find dialog is open. Affects whether 3470 // or not we draw the highlights for matches. 3471 private boolean mFindIsUp; 3472 3473 // Keep track of the last string sent, so we can search again when find is 3474 // reopened. 3475 private String mLastFind; 3476 3477 /** 3478 * Return the first substring consisting of the address of a physical 3479 * location. Currently, only addresses in the United States are detected, 3480 * and consist of: 3481 * - a house number 3482 * - a street name 3483 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3484 * - a city name 3485 * - a state or territory, either spelled out or two-letter abbr. 3486 * - an optional 5 digit or 9 digit zip code. 3487 * 3488 * All names must be correctly capitalized, and the zip code, if present, 3489 * must be valid for the state. The street type must be a standard USPS 3490 * spelling or abbreviation. The state or territory must also be spelled 3491 * or abbreviated using USPS standards. The house number may not exceed 3492 * five digits. 3493 * @param addr The string to search for addresses. 3494 * 3495 * @return the address, or if no address is found, return null. 3496 */ 3497 public static String findAddress(String addr) { 3498 checkThread(); 3499 return findAddress(addr, false); 3500 } 3501 3502 /** 3503 * @hide 3504 * Return the first substring consisting of the address of a physical 3505 * location. Currently, only addresses in the United States are detected, 3506 * and consist of: 3507 * - a house number 3508 * - a street name 3509 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3510 * - a city name 3511 * - a state or territory, either spelled out or two-letter abbr. 3512 * - an optional 5 digit or 9 digit zip code. 3513 * 3514 * Names are optionally capitalized, and the zip code, if present, 3515 * must be valid for the state. The street type must be a standard USPS 3516 * spelling or abbreviation. The state or territory must also be spelled 3517 * or abbreviated using USPS standards. The house number may not exceed 3518 * five digits. 3519 * @param addr The string to search for addresses. 3520 * @param caseInsensitive addr Set to true to make search ignore case. 3521 * 3522 * @return the address, or if no address is found, return null. 3523 */ 3524 public static String findAddress(String addr, boolean caseInsensitive) { 3525 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3526 } 3527 3528 /* 3529 * Clear the highlighting surrounding text matches created by findAll. 3530 */ 3531 public void clearMatches() { 3532 checkThread(); 3533 if (mNativeClass == 0) 3534 return; 3535 nativeSetFindIsEmpty(); 3536 invalidate(); 3537 } 3538 3539 /** 3540 * Called when the find ActionMode ends. 3541 */ 3542 void notifyFindDialogDismissed() { 3543 mFindCallback = null; 3544 mCachedOverlappingActionModeHeight = -1; 3545 if (mWebViewCore == null) { 3546 return; 3547 } 3548 clearMatches(); 3549 setFindIsUp(false); 3550 // Now that the dialog has been removed, ensure that we scroll to a 3551 // location that is not beyond the end of the page. 3552 pinScrollTo(mScrollX, mScrollY, false, 0); 3553 invalidate(); 3554 } 3555 3556 /** 3557 * Query the document to see if it contains any image references. The 3558 * message object will be dispatched with arg1 being set to 1 if images 3559 * were found and 0 if the document does not reference any images. 3560 * @param response The message that will be dispatched with the result. 3561 */ 3562 public void documentHasImages(Message response) { 3563 checkThread(); 3564 if (response == null) { 3565 return; 3566 } 3567 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3568 } 3569 3570 /** 3571 * Request the scroller to abort any ongoing animation 3572 * 3573 * @hide 3574 */ 3575 public void stopScroll() { 3576 mScroller.forceFinished(true); 3577 mLastVelocity = 0; 3578 } 3579 3580 @Override 3581 public void computeScroll() { 3582 if (mScroller.computeScrollOffset()) { 3583 int oldX = mScrollX; 3584 int oldY = mScrollY; 3585 int x = mScroller.getCurrX(); 3586 int y = mScroller.getCurrY(); 3587 invalidate(); // So we draw again 3588 3589 if (!mScroller.isFinished()) { 3590 int rangeX = computeMaxScrollX(); 3591 int rangeY = computeMaxScrollY(); 3592 int overflingDistance = mOverflingDistance; 3593 3594 // Use the layer's scroll data if needed. 3595 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3596 oldX = mScrollingLayerRect.left; 3597 oldY = mScrollingLayerRect.top; 3598 rangeX = mScrollingLayerRect.right; 3599 rangeY = mScrollingLayerRect.bottom; 3600 // No overscrolling for layers. 3601 overflingDistance = 0; 3602 } 3603 3604 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3605 rangeX, rangeY, 3606 overflingDistance, overflingDistance, false); 3607 3608 if (mOverScrollGlow != null) { 3609 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3610 } 3611 } else { 3612 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3613 mScrollX = x; 3614 mScrollY = y; 3615 } else { 3616 // Update the layer position instead of WebView. 3617 scrollLayerTo(x, y); 3618 } 3619 abortAnimation(); 3620 nativeSetIsScrolling(false); 3621 if (!mBlockWebkitViewMessages) { 3622 WebViewCore.resumePriority(); 3623 if (!mSelectingText) { 3624 WebViewCore.resumeUpdatePicture(mWebViewCore); 3625 } 3626 } 3627 if (oldX != mScrollX || oldY != mScrollY) { 3628 sendOurVisibleRect(); 3629 } 3630 } 3631 } else { 3632 super.computeScroll(); 3633 } 3634 } 3635 3636 private void scrollLayerTo(int x, int y) { 3637 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3638 return; 3639 } 3640 nativeScrollLayer(mScrollingLayer, x, y); 3641 mScrollingLayerRect.left = x; 3642 mScrollingLayerRect.top = y; 3643 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 3644 invalidate(); 3645 } 3646 3647 private static int computeDuration(int dx, int dy) { 3648 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3649 int duration = distance * 1000 / STD_SPEED; 3650 return Math.min(duration, MAX_DURATION); 3651 } 3652 3653 // helper to pin the scrollBy parameters (already in view coordinates) 3654 // returns true if the scroll was changed 3655 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3656 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3657 } 3658 // helper to pin the scrollTo parameters (already in view coordinates) 3659 // returns true if the scroll was changed 3660 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3661 x = pinLocX(x); 3662 y = pinLocY(y); 3663 int dx = x - mScrollX; 3664 int dy = y - mScrollY; 3665 3666 if ((dx | dy) == 0) { 3667 return false; 3668 } 3669 abortAnimation(); 3670 if (animate) { 3671 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3672 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3673 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3674 awakenScrollBars(mScroller.getDuration()); 3675 invalidate(); 3676 } else { 3677 scrollTo(x, y); 3678 } 3679 return true; 3680 } 3681 3682 // Scale from content to view coordinates, and pin. 3683 // Also called by jni webview.cpp 3684 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3685 if (mDrawHistory) { 3686 // disallow WebView to change the scroll position as History Picture 3687 // is used in the view system. 3688 // TODO: as we switchOutDrawHistory when trackball or navigation 3689 // keys are hit, this should be safe. Right? 3690 return false; 3691 } 3692 cx = contentToViewDimension(cx); 3693 cy = contentToViewDimension(cy); 3694 if (mHeightCanMeasure) { 3695 // move our visible rect according to scroll request 3696 if (cy != 0) { 3697 Rect tempRect = new Rect(); 3698 calcOurVisibleRect(tempRect); 3699 tempRect.offset(cx, cy); 3700 requestRectangleOnScreen(tempRect); 3701 } 3702 // FIXME: We scroll horizontally no matter what because currently 3703 // ScrollView and ListView will not scroll horizontally. 3704 // FIXME: Why do we only scroll horizontally if there is no 3705 // vertical scroll? 3706// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3707 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3708 } else { 3709 return pinScrollBy(cx, cy, animate, 0); 3710 } 3711 } 3712 3713 /** 3714 * Called by CallbackProxy when the page starts loading. 3715 * @param url The URL of the page which has started loading. 3716 */ 3717 /* package */ void onPageStarted(String url) { 3718 // every time we start a new page, we want to reset the 3719 // WebView certificate: if the new site is secure, we 3720 // will reload it and get a new certificate set; 3721 // if the new site is not secure, the certificate must be 3722 // null, and that will be the case 3723 setCertificate(null); 3724 3725 // reset the flag since we set to true in if need after 3726 // loading is see onPageFinished(Url) 3727 mAccessibilityScriptInjected = false; 3728 } 3729 3730 /** 3731 * Called by CallbackProxy when the page finishes loading. 3732 * @param url The URL of the page which has finished loading. 3733 */ 3734 /* package */ void onPageFinished(String url) { 3735 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3736 // If the user is now on a different page, or has scrolled the page 3737 // past the point where the title bar is offscreen, ignore the 3738 // scroll request. 3739 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3740 && mScrollX == 0 && mScrollY == 0) { 3741 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3742 SLIDE_TITLE_DURATION); 3743 } 3744 mPageThatNeedsToSlideTitleBarOffScreen = null; 3745 } 3746 mZoomManager.onPageFinished(url); 3747 injectAccessibilityForUrl(url); 3748 } 3749 3750 /** 3751 * This method injects accessibility in the loaded document if accessibility 3752 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3753 * If no URL specific script is found or JavaScript is disabled we fallback to 3754 * the default {@link AccessibilityInjector} implementation. 3755 * </p> 3756 * If the URL has the "axs" paramter set to 1 it has already done the 3757 * script injection so we do nothing. If the parameter is set to 0 3758 * the URL opts out accessibility script injection so we fall back to 3759 * the default {@link AccessibilityInjector}. 3760 * </p> 3761 * Note: If the user has not opted-in the accessibility script injection no scripts 3762 * are injected rather the default {@link AccessibilityInjector} implementation 3763 * is used. 3764 * 3765 * @param url The URL loaded by this {@link WebView}. 3766 */ 3767 private void injectAccessibilityForUrl(String url) { 3768 if (mWebViewCore == null) { 3769 return; 3770 } 3771 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3772 3773 if (!accessibilityManager.isEnabled()) { 3774 // it is possible that accessibility was turned off between reloads 3775 ensureAccessibilityScriptInjectorInstance(false); 3776 return; 3777 } 3778 3779 if (!getSettings().getJavaScriptEnabled()) { 3780 // no JS so we fallback to the basic buil-in support 3781 ensureAccessibilityScriptInjectorInstance(true); 3782 return; 3783 } 3784 3785 // check the URL "axs" parameter to choose appropriate action 3786 int axsParameterValue = getAxsUrlParameterValue(url); 3787 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3788 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3789 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3790 if (onDeviceScriptInjectionEnabled) { 3791 ensureAccessibilityScriptInjectorInstance(false); 3792 // neither script injected nor script injection opted out => we inject 3793 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3794 // TODO: Set this flag after successfull script injection. Maybe upon injection 3795 // the chooser should update the meta tag and we check it to declare success 3796 mAccessibilityScriptInjected = true; 3797 } else { 3798 // injection disabled so we fallback to the basic built-in support 3799 ensureAccessibilityScriptInjectorInstance(true); 3800 } 3801 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3802 // injection opted out so we fallback to the basic buil-in support 3803 ensureAccessibilityScriptInjectorInstance(true); 3804 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3805 ensureAccessibilityScriptInjectorInstance(false); 3806 // the URL provides accessibility but we still need to add our generic script 3807 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3808 } else { 3809 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3810 } 3811 } 3812 3813 /** 3814 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3815 * 3816 * @param present True to ensure an insance, false to ensure no instance. 3817 */ 3818 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3819 if (present) { 3820 if (mAccessibilityInjector == null) { 3821 mAccessibilityInjector = new AccessibilityInjector(this); 3822 } 3823 } else { 3824 mAccessibilityInjector = null; 3825 } 3826 } 3827 3828 /** 3829 * Gets the "axs" URL parameter value. 3830 * 3831 * @param url A url to fetch the paramter from. 3832 * @return The parameter value if such, -1 otherwise. 3833 */ 3834 private int getAxsUrlParameterValue(String url) { 3835 if (mMatchAxsUrlParameterPattern == null) { 3836 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3837 } 3838 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3839 if (matcher.find()) { 3840 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3841 return Integer.parseInt(keyValuePair.split("=")[1]); 3842 } 3843 return -1; 3844 } 3845 3846 /** 3847 * The URL of a page that sent a message to scroll the title bar off screen. 3848 * 3849 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3850 * title bar off the screen. Sometimes, the scroll position is set before 3851 * the page finishes loading. Rather than scrolling while the page is still 3852 * loading, keep track of the URL and new scroll position so we can perform 3853 * the scroll once the page finishes loading. 3854 */ 3855 private String mPageThatNeedsToSlideTitleBarOffScreen; 3856 3857 /** 3858 * The destination Y scroll position to be used when the page finishes 3859 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3860 */ 3861 private int mYDistanceToSlideTitleOffScreen; 3862 3863 // scale from content to view coordinates, and pin 3864 // return true if pin caused the final x/y different than the request cx/cy, 3865 // and a future scroll may reach the request cx/cy after our size has 3866 // changed 3867 // return false if the view scroll to the exact position as it is requested, 3868 // where negative numbers are taken to mean 0 3869 private boolean setContentScrollTo(int cx, int cy) { 3870 if (mDrawHistory) { 3871 // disallow WebView to change the scroll position as History Picture 3872 // is used in the view system. 3873 // One known case where this is called is that WebCore tries to 3874 // restore the scroll position. As history Picture already uses the 3875 // saved scroll position, it is ok to skip this. 3876 return false; 3877 } 3878 int vx; 3879 int vy; 3880 if ((cx | cy) == 0) { 3881 // If the page is being scrolled to (0,0), do not add in the title 3882 // bar's height, and simply scroll to (0,0). (The only other work 3883 // in contentToView_ is to multiply, so this would not change 0.) 3884 vx = 0; 3885 vy = 0; 3886 } else { 3887 vx = contentToViewX(cx); 3888 vy = contentToViewY(cy); 3889 } 3890// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3891// vx + " " + vy + "]"); 3892 // Some mobile sites attempt to scroll the title bar off the page by 3893 // scrolling to (0,1). If we are at the top left corner of the 3894 // page, assume this is an attempt to scroll off the title bar, and 3895 // animate the title bar off screen slowly enough that the user can see 3896 // it. 3897 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3898 && mTitleBar != null) { 3899 // FIXME: 100 should be defined somewhere as our max progress. 3900 if (getProgress() < 100) { 3901 // Wait to scroll the title bar off screen until the page has 3902 // finished loading. Keep track of the URL and the destination 3903 // Y position 3904 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3905 mYDistanceToSlideTitleOffScreen = vy; 3906 } else { 3907 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3908 } 3909 // Since we are animating, we have not yet reached the desired 3910 // scroll position. Do not return true to request another attempt 3911 return false; 3912 } 3913 pinScrollTo(vx, vy, false, 0); 3914 // If the request was to scroll to a negative coordinate, treat it as if 3915 // it was a request to scroll to 0 3916 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3917 return true; 3918 } else { 3919 return false; 3920 } 3921 } 3922 3923 // scale from content to view coordinates, and pin 3924 private void spawnContentScrollTo(int cx, int cy) { 3925 if (mDrawHistory) { 3926 // disallow WebView to change the scroll position as History Picture 3927 // is used in the view system. 3928 return; 3929 } 3930 int vx = contentToViewX(cx); 3931 int vy = contentToViewY(cy); 3932 pinScrollTo(vx, vy, true, 0); 3933 } 3934 3935 /** 3936 * These are from webkit, and are in content coordinate system (unzoomed) 3937 */ 3938 private void contentSizeChanged(boolean updateLayout) { 3939 // suppress 0,0 since we usually see real dimensions soon after 3940 // this avoids drawing the prev content in a funny place. If we find a 3941 // way to consolidate these notifications, this check may become 3942 // obsolete 3943 if ((mContentWidth | mContentHeight) == 0) { 3944 return; 3945 } 3946 3947 if (mHeightCanMeasure) { 3948 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3949 || updateLayout) { 3950 requestLayout(); 3951 } 3952 } else if (mWidthCanMeasure) { 3953 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3954 || updateLayout) { 3955 requestLayout(); 3956 } 3957 } else { 3958 // If we don't request a layout, try to send our view size to the 3959 // native side to ensure that WebCore has the correct dimensions. 3960 sendViewSizeZoom(false); 3961 } 3962 } 3963 3964 /** 3965 * Set the WebViewClient that will receive various notifications and 3966 * requests. This will replace the current handler. 3967 * @param client An implementation of WebViewClient. 3968 */ 3969 public void setWebViewClient(WebViewClient client) { 3970 checkThread(); 3971 mCallbackProxy.setWebViewClient(client); 3972 } 3973 3974 /** 3975 * Gets the WebViewClient 3976 * @return the current WebViewClient instance. 3977 * 3978 *@hide pending API council approval. 3979 */ 3980 public WebViewClient getWebViewClient() { 3981 return mCallbackProxy.getWebViewClient(); 3982 } 3983 3984 /** 3985 * Register the interface to be used when content can not be handled by 3986 * the rendering engine, and should be downloaded instead. This will replace 3987 * the current handler. 3988 * @param listener An implementation of DownloadListener. 3989 */ 3990 public void setDownloadListener(DownloadListener listener) { 3991 checkThread(); 3992 mCallbackProxy.setDownloadListener(listener); 3993 } 3994 3995 /** 3996 * Set the chrome handler. This is an implementation of WebChromeClient for 3997 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3998 * This will replace the current handler. 3999 * @param client An implementation of WebChromeClient. 4000 */ 4001 public void setWebChromeClient(WebChromeClient client) { 4002 checkThread(); 4003 mCallbackProxy.setWebChromeClient(client); 4004 } 4005 4006 /** 4007 * Gets the chrome handler. 4008 * @return the current WebChromeClient instance. 4009 * 4010 * @hide API council approval. 4011 */ 4012 public WebChromeClient getWebChromeClient() { 4013 return mCallbackProxy.getWebChromeClient(); 4014 } 4015 4016 /** 4017 * Set the back/forward list client. This is an implementation of 4018 * WebBackForwardListClient for handling new items and changes in the 4019 * history index. 4020 * @param client An implementation of WebBackForwardListClient. 4021 * {@hide} 4022 */ 4023 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4024 mCallbackProxy.setWebBackForwardListClient(client); 4025 } 4026 4027 /** 4028 * Gets the WebBackForwardListClient. 4029 * {@hide} 4030 */ 4031 public WebBackForwardListClient getWebBackForwardListClient() { 4032 return mCallbackProxy.getWebBackForwardListClient(); 4033 } 4034 4035 /** 4036 * Set the Picture listener. This is an interface used to receive 4037 * notifications of a new Picture. 4038 * @param listener An implementation of WebView.PictureListener. 4039 * @deprecated This method is now obsolete. 4040 */ 4041 @Deprecated 4042 public void setPictureListener(PictureListener listener) { 4043 checkThread(); 4044 mPictureListener = listener; 4045 } 4046 4047 /** 4048 * {@hide} 4049 */ 4050 /* FIXME: Debug only! Remove for SDK! */ 4051 public void externalRepresentation(Message callback) { 4052 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4053 } 4054 4055 /** 4056 * {@hide} 4057 */ 4058 /* FIXME: Debug only! Remove for SDK! */ 4059 public void documentAsText(Message callback) { 4060 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4061 } 4062 4063 /** 4064 * Use this function to bind an object to JavaScript so that the 4065 * methods can be accessed from JavaScript. 4066 * <p><strong>IMPORTANT:</strong> 4067 * <ul> 4068 * <li> Using addJavascriptInterface() allows JavaScript to control your 4069 * application. This can be a very useful feature or a dangerous security 4070 * issue. When the HTML in the WebView is untrustworthy (for example, part 4071 * or all of the HTML is provided by some person or process), then an 4072 * attacker could inject HTML that will execute your code and possibly any 4073 * code of the attacker's choosing.<br> 4074 * Do not use addJavascriptInterface() unless all of the HTML in this 4075 * WebView was written by you.</li> 4076 * <li> The Java object that is bound runs in another thread and not in 4077 * the thread that it was constructed in.</li> 4078 * </ul></p> 4079 * @param obj The class instance to bind to JavaScript, null instances are 4080 * ignored. 4081 * @param interfaceName The name to used to expose the instance in 4082 * JavaScript. 4083 */ 4084 public void addJavascriptInterface(Object obj, String interfaceName) { 4085 checkThread(); 4086 if (obj == null) { 4087 return; 4088 } 4089 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4090 arg.mObject = obj; 4091 arg.mInterfaceName = interfaceName; 4092 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4093 } 4094 4095 /** 4096 * Removes a previously added JavaScript interface with the given name. 4097 * @param interfaceName The name of the interface to remove. 4098 */ 4099 public void removeJavascriptInterface(String interfaceName) { 4100 checkThread(); 4101 if (mWebViewCore != null) { 4102 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4103 arg.mInterfaceName = interfaceName; 4104 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4105 } 4106 } 4107 4108 /** 4109 * Return the WebSettings object used to control the settings for this 4110 * WebView. 4111 * @return A WebSettings object that can be used to control this WebView's 4112 * settings. 4113 */ 4114 public WebSettings getSettings() { 4115 checkThread(); 4116 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4117 } 4118 4119 /** 4120 * Return the list of currently loaded plugins. 4121 * @return The list of currently loaded plugins. 4122 * 4123 * @hide 4124 * @deprecated This was used for Gears, which has been deprecated. 4125 */ 4126 @Deprecated 4127 public static synchronized PluginList getPluginList() { 4128 checkThread(); 4129 return new PluginList(); 4130 } 4131 4132 /** 4133 * @hide 4134 * @deprecated This was used for Gears, which has been deprecated. 4135 */ 4136 @Deprecated 4137 public void refreshPlugins(boolean reloadOpenPages) { 4138 checkThread(); 4139 } 4140 4141 //------------------------------------------------------------------------- 4142 // Override View methods 4143 //------------------------------------------------------------------------- 4144 4145 @Override 4146 protected void finalize() throws Throwable { 4147 try { 4148 if (mNativeClass != 0) { 4149 mPrivateHandler.post(new Runnable() { 4150 @Override 4151 public void run() { 4152 destroy(); 4153 } 4154 }); 4155 } 4156 } finally { 4157 super.finalize(); 4158 } 4159 } 4160 4161 @Override 4162 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4163 if (child == mTitleBar) { 4164 // When drawing the title bar, move it horizontally to always show 4165 // at the top of the WebView. 4166 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4167 int newTop = 0; 4168 if (mTitleGravity == Gravity.NO_GRAVITY) { 4169 newTop = Math.min(0, mScrollY); 4170 } else if (mTitleGravity == Gravity.TOP) { 4171 newTop = mScrollY; 4172 } 4173 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4174 mTitleBar.setTop(newTop); 4175 } 4176 return super.drawChild(canvas, child, drawingTime); 4177 } 4178 4179 private void drawContent(Canvas canvas, boolean drawRings) { 4180 drawCoreAndCursorRing(canvas, mBackgroundColor, 4181 mDrawCursorRing && drawRings); 4182 } 4183 4184 /** 4185 * Draw the background when beyond bounds 4186 * @param canvas Canvas to draw into 4187 */ 4188 private void drawOverScrollBackground(Canvas canvas) { 4189 if (mOverScrollBackground == null) { 4190 mOverScrollBackground = new Paint(); 4191 Bitmap bm = BitmapFactory.decodeResource( 4192 mContext.getResources(), 4193 com.android.internal.R.drawable.status_bar_background); 4194 mOverScrollBackground.setShader(new BitmapShader(bm, 4195 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4196 mOverScrollBorder = new Paint(); 4197 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4198 mOverScrollBorder.setStrokeWidth(0); 4199 mOverScrollBorder.setColor(0xffbbbbbb); 4200 } 4201 4202 int top = 0; 4203 int right = computeRealHorizontalScrollRange(); 4204 int bottom = top + computeRealVerticalScrollRange(); 4205 // first draw the background and anchor to the top of the view 4206 canvas.save(); 4207 canvas.translate(mScrollX, mScrollY); 4208 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4209 - mScrollY, Region.Op.DIFFERENCE); 4210 canvas.drawPaint(mOverScrollBackground); 4211 canvas.restore(); 4212 // then draw the border 4213 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4214 // next clip the region for the content 4215 canvas.clipRect(0, top, right, bottom); 4216 } 4217 4218 @Override 4219 protected void onDraw(Canvas canvas) { 4220 // if mNativeClass is 0, the WebView is either destroyed or not 4221 // initialized. In either case, just draw the background color and return 4222 if (mNativeClass == 0) { 4223 canvas.drawColor(mBackgroundColor); 4224 return; 4225 } 4226 4227 // if both mContentWidth and mContentHeight are 0, it means there is no 4228 // valid Picture passed to WebView yet. This can happen when WebView 4229 // just starts. Draw the background and return. 4230 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4231 canvas.drawColor(mBackgroundColor); 4232 return; 4233 } 4234 4235 if (canvas.isHardwareAccelerated()) { 4236 if (mIncrementEGLContextHack == false) { 4237 mIncrementEGLContextHack = true; 4238 EGL10 egl = (EGL10) EGLContext.getEGL(); 4239 EGLDisplay eglDisplay = egl.eglGetDisplay(EGL_DEFAULT_DISPLAY); 4240 int[] version = new int[2]; 4241 egl.eglInitialize(eglDisplay, version); 4242 } 4243 mZoomManager.setHardwareAccelerated(); 4244 } 4245 4246 int saveCount = canvas.save(); 4247 if (mInOverScrollMode && !getSettings() 4248 .getUseWebViewBackgroundForOverscrollBackground()) { 4249 drawOverScrollBackground(canvas); 4250 } 4251 if (mTitleBar != null) { 4252 canvas.translate(0, getTitleHeight()); 4253 } 4254 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4255 && (mTouchMode == TOUCH_INIT_MODE 4256 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4257 || mTouchMode == TOUCH_SHORTPRESS_MODE 4258 || mTouchMode == TOUCH_DONE_MODE); 4259 boolean drawNativeRings = !drawJavaRings; 4260 if (USE_WEBKIT_RINGS) { 4261 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4262 } 4263 drawContent(canvas, drawNativeRings); 4264 canvas.restoreToCount(saveCount); 4265 4266 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4267 invalidate(); 4268 } 4269 mWebViewCore.signalRepaintDone(); 4270 4271 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4272 invalidate(); 4273 } 4274 4275 // paint the highlight in the end 4276 if (drawJavaRings) { 4277 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4278 if (delay < ViewConfiguration.getTapTimeout()) { 4279 Rect r = mTouchHighlightRegion.getBounds(); 4280 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4281 } else { 4282 if (mTouchHightlightPaint == null) { 4283 mTouchHightlightPaint = new Paint(); 4284 mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR); 4285 } 4286 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4287 Rect r = new Rect(); 4288 while (iter.next(r)) { 4289 canvas.drawRect(r, mTouchHightlightPaint); 4290 } 4291 } 4292 } 4293 if (DEBUG_TOUCH_HIGHLIGHT) { 4294 if (getSettings().getNavDump()) { 4295 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4296 if (mTouchCrossHairColor == null) { 4297 mTouchCrossHairColor = new Paint(); 4298 mTouchCrossHairColor.setColor(Color.RED); 4299 } 4300 canvas.drawLine(mTouchHighlightX - mNavSlop, 4301 mTouchHighlightY - mNavSlop, mTouchHighlightX 4302 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4303 + 1, mTouchCrossHairColor); 4304 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4305 mTouchHighlightY - mNavSlop, mTouchHighlightX 4306 - mNavSlop, 4307 mTouchHighlightY + mNavSlop + 1, 4308 mTouchCrossHairColor); 4309 } 4310 } 4311 } 4312 } 4313 4314 private void removeTouchHighlight() { 4315 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 4316 mPrivateHandler.removeMessages(SET_TOUCH_HIGHLIGHT_RECTS); 4317 setTouchHighlightRects(null); 4318 } 4319 4320 @Override 4321 public void setLayoutParams(ViewGroup.LayoutParams params) { 4322 if (params.height == LayoutParams.WRAP_CONTENT) { 4323 mWrapContent = true; 4324 } 4325 super.setLayoutParams(params); 4326 } 4327 4328 @Override 4329 public boolean performLongClick() { 4330 // performLongClick() is the result of a delayed message. If we switch 4331 // to windows overview, the WebView will be temporarily removed from the 4332 // view system. In that case, do nothing. 4333 if (getParent() == null) return false; 4334 4335 // A multi-finger gesture can look like a long press; make sure we don't take 4336 // long press actions if we're scaling. 4337 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4338 if (detector != null && detector.isInProgress()) { 4339 return false; 4340 } 4341 4342 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4343 // Send the click so that the textfield is in focus 4344 centerKeyPressOnTextField(); 4345 rebuildWebTextView(); 4346 } else { 4347 clearTextEntry(); 4348 } 4349 if (inEditingMode()) { 4350 // Since we just called rebuildWebTextView, the layout is not set 4351 // properly. Update it so it can correctly find the word to select. 4352 mWebTextView.ensureLayout(); 4353 // Provide a touch down event to WebTextView, which will allow it 4354 // to store the location to use in performLongClick. 4355 AbsoluteLayout.LayoutParams params 4356 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4357 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4358 mLastTouchTime, MotionEvent.ACTION_DOWN, 4359 mLastTouchX - params.x + mScrollX, 4360 mLastTouchY - params.y + mScrollY, 0); 4361 mWebTextView.dispatchTouchEvent(fake); 4362 return mWebTextView.performLongClick(); 4363 } 4364 if (mSelectingText) return false; // long click does nothing on selection 4365 /* if long click brings up a context menu, the super function 4366 * returns true and we're done. Otherwise, nothing happened when 4367 * the user clicked. */ 4368 if (super.performLongClick()) { 4369 return true; 4370 } 4371 /* In the case where the application hasn't already handled the long 4372 * click action, look for a word under the click. If one is found, 4373 * animate the text selection into view. 4374 * FIXME: no animation code yet */ 4375 final boolean isSelecting = selectText(); 4376 if (isSelecting) { 4377 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4378 } 4379 return isSelecting; 4380 } 4381 4382 /** 4383 * Select the word at the last click point. 4384 * 4385 * @hide pending API council approval 4386 */ 4387 public boolean selectText() { 4388 int x = viewToContentX(mLastTouchX + mScrollX); 4389 int y = viewToContentY(mLastTouchY + mScrollY); 4390 return selectText(x, y); 4391 } 4392 4393 /** 4394 * Select the word at the indicated content coordinates. 4395 */ 4396 boolean selectText(int x, int y) { 4397 if (!setUpSelect(true, x, y)) { 4398 return false; 4399 } 4400 nativeSetExtendSelection(); 4401 mDrawSelectionPointer = false; 4402 mTouchMode = TOUCH_DRAG_MODE; 4403 return true; 4404 } 4405 4406 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4407 4408 @Override 4409 protected void onConfigurationChanged(Configuration newConfig) { 4410 mCachedOverlappingActionModeHeight = -1; 4411 if (mSelectingText && mOrientation != newConfig.orientation) { 4412 selectionDone(); 4413 } 4414 mOrientation = newConfig.orientation; 4415 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4416 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4417 } 4418 } 4419 4420 /** 4421 * Keep track of the Callback so we can end its ActionMode or remove its 4422 * titlebar. 4423 */ 4424 private SelectActionModeCallback mSelectCallback; 4425 4426 // These values are possible options for didUpdateWebTextViewDimensions. 4427 private static final int FULLY_ON_SCREEN = 0; 4428 private static final int INTERSECTS_SCREEN = 1; 4429 private static final int ANYWHERE = 2; 4430 4431 /** 4432 * Check to see if the focused textfield/textarea is still on screen. If it 4433 * is, update the the dimensions and location of WebTextView. Otherwise, 4434 * remove the WebTextView. Should be called when the zoom level changes. 4435 * @param intersection How to determine whether the textfield/textarea is 4436 * still on screen. 4437 * @return boolean True if the textfield/textarea is still on screen and the 4438 * dimensions/location of WebTextView have been updated. 4439 */ 4440 private boolean didUpdateWebTextViewDimensions(int intersection) { 4441 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4442 Rect vBox = contentToViewRect(contentBounds); 4443 Rect visibleRect = new Rect(); 4444 calcOurVisibleRect(visibleRect); 4445 // If the textfield is on screen, place the WebTextView in 4446 // its new place, accounting for our new scroll/zoom values, 4447 // and adjust its textsize. 4448 boolean onScreen; 4449 switch (intersection) { 4450 case FULLY_ON_SCREEN: 4451 onScreen = visibleRect.contains(vBox); 4452 break; 4453 case INTERSECTS_SCREEN: 4454 onScreen = Rect.intersects(visibleRect, vBox); 4455 break; 4456 case ANYWHERE: 4457 onScreen = true; 4458 break; 4459 default: 4460 throw new AssertionError( 4461 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4462 } 4463 if (onScreen) { 4464 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4465 vBox.height()); 4466 mWebTextView.updateTextSize(); 4467 updateWebTextViewPadding(); 4468 return true; 4469 } else { 4470 // The textfield is now off screen. The user probably 4471 // was not zooming to see the textfield better. Remove 4472 // the WebTextView. If the user types a key, and the 4473 // textfield is still in focus, we will reconstruct 4474 // the WebTextView and scroll it back on screen. 4475 mWebTextView.remove(); 4476 return false; 4477 } 4478 } 4479 4480 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4481 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4482 if (mNativeClass == 0) 4483 return; 4484 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4485 isPictureAfterFirstLayout, registerPageSwapCallback); 4486 if (mHTML5VideoViewProxy != null) { 4487 mHTML5VideoViewProxy.setBaseLayer(layer); 4488 } 4489 } 4490 4491 int getBaseLayer() { 4492 if (mNativeClass == 0) { 4493 return 0; 4494 } 4495 return nativeGetBaseLayer(); 4496 } 4497 4498 private void onZoomAnimationStart() { 4499 // If it is in password mode, turn it off so it does not draw misplaced. 4500 if (inEditingMode()) { 4501 mWebTextView.setVisibility(INVISIBLE); 4502 } 4503 } 4504 4505 private void onZoomAnimationEnd() { 4506 // adjust the edit text view if needed 4507 if (inEditingMode() 4508 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4509 // If it is a password field, start drawing the WebTextView once 4510 // again. 4511 mWebTextView.setVisibility(VISIBLE); 4512 } 4513 } 4514 4515 void onFixedLengthZoomAnimationStart() { 4516 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4517 onZoomAnimationStart(); 4518 } 4519 4520 void onFixedLengthZoomAnimationEnd() { 4521 if (!mBlockWebkitViewMessages && !mSelectingText) { 4522 WebViewCore.resumeUpdatePicture(mWebViewCore); 4523 } 4524 onZoomAnimationEnd(); 4525 } 4526 4527 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4528 Paint.DITHER_FLAG | 4529 Paint.SUBPIXEL_TEXT_FLAG; 4530 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4531 Paint.DITHER_FLAG; 4532 4533 private final DrawFilter mZoomFilter = 4534 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4535 // If we need to trade better quality for speed, set mScrollFilter to null 4536 private final DrawFilter mScrollFilter = 4537 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4538 4539 private void drawCoreAndCursorRing(Canvas canvas, int color, 4540 boolean drawCursorRing) { 4541 if (mDrawHistory) { 4542 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4543 canvas.drawPicture(mHistoryPicture); 4544 return; 4545 } 4546 if (mNativeClass == 0) return; 4547 4548 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4549 boolean animateScroll = ((!mScroller.isFinished() 4550 || mVelocityTracker != null) 4551 && (mTouchMode != TOUCH_DRAG_MODE || 4552 mHeldMotionless != MOTIONLESS_TRUE)) 4553 || mDeferTouchMode == TOUCH_DRAG_MODE; 4554 if (mTouchMode == TOUCH_DRAG_MODE) { 4555 if (mHeldMotionless == MOTIONLESS_PENDING) { 4556 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4557 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4558 mHeldMotionless = MOTIONLESS_FALSE; 4559 } 4560 if (mHeldMotionless == MOTIONLESS_FALSE) { 4561 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4562 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4563 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4564 .obtainMessage(AWAKEN_SCROLL_BARS), 4565 ViewConfiguration.getScrollDefaultDelay()); 4566 mHeldMotionless = MOTIONLESS_PENDING; 4567 } 4568 } 4569 int saveCount = canvas.save(); 4570 if (animateZoom) { 4571 mZoomManager.animateZoom(canvas); 4572 } else if (!canvas.isHardwareAccelerated()) { 4573 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4574 } 4575 4576 boolean UIAnimationsRunning = false; 4577 // Currently for each draw we compute the animation values; 4578 // We may in the future decide to do that independently. 4579 if (mNativeClass != 0 && nativeEvaluateLayersAnimations(mNativeClass)) { 4580 UIAnimationsRunning = true; 4581 // If we have unfinished (or unstarted) animations, 4582 // we ask for a repaint. We only need to do this in software 4583 // rendering (with hardware rendering we already have a different 4584 // method of requesting a repaint) 4585 if (!canvas.isHardwareAccelerated()) 4586 invalidate(); 4587 } 4588 4589 // decide which adornments to draw 4590 int extras = DRAW_EXTRAS_NONE; 4591 if (mFindIsUp) { 4592 extras = DRAW_EXTRAS_FIND; 4593 } else if (mSelectingText && (!USE_JAVA_TEXT_SELECTION || DEBUG_TEXT_HANDLES)) { 4594 extras = DRAW_EXTRAS_SELECTION; 4595 nativeSetSelectionPointer(mNativeClass, 4596 mDrawSelectionPointer, 4597 mZoomManager.getInvScale(), mSelectX, mSelectY - getTitleHeight()); 4598 } else if (drawCursorRing) { 4599 extras = DRAW_EXTRAS_CURSOR_RING; 4600 } 4601 if (DebugFlags.WEB_VIEW) { 4602 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4603 + " mSelectingText=" + mSelectingText 4604 + " nativePageShouldHandleShiftAndArrows()=" 4605 + nativePageShouldHandleShiftAndArrows() 4606 + " animateZoom=" + animateZoom 4607 + " extras=" + extras); 4608 } 4609 4610 if (canvas.isHardwareAccelerated()) { 4611 int functor = nativeGetDrawGLFunction(mNativeClass, 4612 mGLViewportEmpty ? null : mGLRectViewport, mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4613 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4614 4615 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4616 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4617 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4618 } 4619 4620 } else { 4621 DrawFilter df = null; 4622 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4623 df = mZoomFilter; 4624 } else if (animateScroll) { 4625 df = mScrollFilter; 4626 } 4627 canvas.setDrawFilter(df); 4628 // XXX: Revisit splitting content. Right now it causes a 4629 // synchronization problem with layers. 4630 int content = nativeDraw(canvas, color, extras, false); 4631 canvas.setDrawFilter(null); 4632 if (!mBlockWebkitViewMessages && content != 0) { 4633 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4634 } 4635 } 4636 4637 canvas.restoreToCount(saveCount); 4638 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4639 drawTextSelectionHandles(canvas); 4640 } 4641 4642 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4643 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4644 mTouchMode = TOUCH_SHORTPRESS_MODE; 4645 } 4646 } 4647 if (mFocusSizeChanged) { 4648 mFocusSizeChanged = false; 4649 // If we are zooming, this will get handled above, when the zoom 4650 // finishes. We also do not need to do this unless the WebTextView 4651 // is showing. With hardware acceleration, the pageSwapCallback() 4652 // updates the WebTextView position in sync with page swapping 4653 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4654 didUpdateWebTextViewDimensions(ANYWHERE); 4655 } 4656 } 4657 } 4658 4659 private void drawTextSelectionHandles(Canvas canvas) { 4660 if (mTextSelectionPaint == null) { 4661 mTextSelectionPaint = new Paint(); 4662 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4663 } 4664 mTextSelectionRegion.setEmpty(); 4665 nativeGetTextSelectionRegion(mNativeClass, mTextSelectionRegion); 4666 Rect r = new Rect(); 4667 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4668 Rect clip = canvas.getClipBounds(); 4669 while (iter.next(r)) { 4670 r.set(contentToViewDimension(r.left), 4671 contentToViewDimension(r.top), 4672 contentToViewDimension(r.right), 4673 contentToViewDimension(r.bottom)); 4674 if (r.intersect(clip)) { 4675 canvas.drawRect(r, mTextSelectionPaint); 4676 } 4677 } 4678 if (mSelectHandleLeft == null) { 4679 mSelectHandleLeft = mContext.getResources().getDrawable( 4680 com.android.internal.R.drawable.text_select_handle_left); 4681 } 4682 int[] handles = new int[4]; 4683 nativeGetSelectionHandles(mNativeClass, handles); 4684 int start_x = contentToViewDimension(handles[0]); 4685 int start_y = contentToViewDimension(handles[1]); 4686 int end_x = contentToViewDimension(handles[2]); 4687 int end_y = contentToViewDimension(handles[3]); 4688 // Magic formula copied from TextView 4689 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4690 mSelectHandleLeft.setBounds(start_x, start_y, 4691 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4692 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4693 if (mSelectHandleRight == null) { 4694 mSelectHandleRight = mContext.getResources().getDrawable( 4695 com.android.internal.R.drawable.text_select_handle_right); 4696 } 4697 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4698 mSelectHandleRight.setBounds(end_x, end_y, 4699 end_x + mSelectHandleRight.getIntrinsicWidth(), 4700 end_y + mSelectHandleRight.getIntrinsicHeight()); 4701 if (DEBUG_TEXT_HANDLES) { 4702 mSelectHandleLeft.setAlpha(125); 4703 mSelectHandleRight.setAlpha(125); 4704 } 4705 mSelectHandleLeft.draw(canvas); 4706 mSelectHandleRight.draw(canvas); 4707 } 4708 4709 // draw history 4710 private boolean mDrawHistory = false; 4711 private Picture mHistoryPicture = null; 4712 private int mHistoryWidth = 0; 4713 private int mHistoryHeight = 0; 4714 4715 // Only check the flag, can be called from WebCore thread 4716 boolean drawHistory() { 4717 return mDrawHistory; 4718 } 4719 4720 int getHistoryPictureWidth() { 4721 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4722 } 4723 4724 // Should only be called in UI thread 4725 void switchOutDrawHistory() { 4726 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4727 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4728 mDrawHistory = false; 4729 mHistoryPicture = null; 4730 invalidate(); 4731 int oldScrollX = mScrollX; 4732 int oldScrollY = mScrollY; 4733 mScrollX = pinLocX(mScrollX); 4734 mScrollY = pinLocY(mScrollY); 4735 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4736 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4737 } else { 4738 sendOurVisibleRect(); 4739 } 4740 } 4741 } 4742 4743 WebViewCore.CursorData cursorData() { 4744 WebViewCore.CursorData result = cursorDataNoPosition(); 4745 Point position = nativeCursorPosition(); 4746 result.mX = position.x; 4747 result.mY = position.y; 4748 return result; 4749 } 4750 4751 WebViewCore.CursorData cursorDataNoPosition() { 4752 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4753 result.mMoveGeneration = nativeMoveGeneration(); 4754 result.mFrame = nativeCursorFramePointer(); 4755 return result; 4756 } 4757 4758 /** 4759 * Delete text from start to end in the focused textfield. If there is no 4760 * focus, or if start == end, silently fail. If start and end are out of 4761 * order, swap them. 4762 * @param start Beginning of selection to delete. 4763 * @param end End of selection to delete. 4764 */ 4765 /* package */ void deleteSelection(int start, int end) { 4766 mTextGeneration++; 4767 WebViewCore.TextSelectionData data 4768 = new WebViewCore.TextSelectionData(start, end); 4769 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4770 data); 4771 } 4772 4773 /** 4774 * Set the selection to (start, end) in the focused textfield. If start and 4775 * end are out of order, swap them. 4776 * @param start Beginning of selection. 4777 * @param end End of selection. 4778 */ 4779 /* package */ void setSelection(int start, int end) { 4780 if (mWebViewCore != null) { 4781 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4782 } 4783 } 4784 4785 @Override 4786 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4787 InputConnection connection = super.onCreateInputConnection(outAttrs); 4788 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4789 return connection; 4790 } 4791 4792 /** 4793 * Called in response to a message from webkit telling us that the soft 4794 * keyboard should be launched. 4795 */ 4796 private void displaySoftKeyboard(boolean isTextView) { 4797 InputMethodManager imm = (InputMethodManager) 4798 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4799 4800 // bring it back to the default level scale so that user can enter text 4801 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4802 if (zoom) { 4803 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4804 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4805 } 4806 if (isTextView) { 4807 rebuildWebTextView(); 4808 if (inEditingMode()) { 4809 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4810 if (zoom) { 4811 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4812 } 4813 return; 4814 } 4815 } 4816 // Used by plugins and contentEditable. 4817 // Also used if the navigation cache is out of date, and 4818 // does not recognize that a textfield is in focus. In that 4819 // case, use WebView as the targeted view. 4820 // see http://b/issue?id=2457459 4821 imm.showSoftInput(this, 0); 4822 } 4823 4824 // Called by WebKit to instruct the UI to hide the keyboard 4825 private void hideSoftKeyboard() { 4826 InputMethodManager imm = InputMethodManager.peekInstance(); 4827 if (imm != null && (imm.isActive(this) 4828 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4829 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4830 } 4831 } 4832 4833 /* 4834 * This method checks the current focus and cursor and potentially rebuilds 4835 * mWebTextView to have the appropriate properties, such as password, 4836 * multiline, and what text it contains. It also removes it if necessary. 4837 */ 4838 /* package */ void rebuildWebTextView() { 4839 // If the WebView does not have focus, do nothing until it gains focus. 4840 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4841 return; 4842 } 4843 boolean alreadyThere = inEditingMode(); 4844 // inEditingMode can only return true if mWebTextView is non-null, 4845 // so we can safely call remove() if (alreadyThere) 4846 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4847 if (alreadyThere) { 4848 mWebTextView.remove(); 4849 } 4850 return; 4851 } 4852 // At this point, we know we have found an input field, so go ahead 4853 // and create the WebTextView if necessary. 4854 if (mWebTextView == null) { 4855 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4856 // Initialize our generation number. 4857 mTextGeneration = 0; 4858 } 4859 mWebTextView.updateTextSize(); 4860 updateWebTextViewPosition(); 4861 String text = nativeFocusCandidateText(); 4862 int nodePointer = nativeFocusCandidatePointer(); 4863 // This needs to be called before setType, which may call 4864 // requestFormData, and it needs to have the correct nodePointer. 4865 mWebTextView.setNodePointer(nodePointer); 4866 mWebTextView.setType(nativeFocusCandidateType()); 4867 // Gravity needs to be set after setType 4868 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 4869 if (null == text) { 4870 if (DebugFlags.WEB_VIEW) { 4871 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4872 } 4873 text = ""; 4874 } 4875 mWebTextView.setTextAndKeepSelection(text); 4876 InputMethodManager imm = InputMethodManager.peekInstance(); 4877 if (imm != null && imm.isActive(mWebTextView)) { 4878 imm.restartInput(mWebTextView); 4879 mWebTextView.clearComposingText(); 4880 } 4881 if (isFocused()) { 4882 mWebTextView.requestFocus(); 4883 } 4884 } 4885 4886 private void updateWebTextViewPosition() { 4887 Rect visibleRect = new Rect(); 4888 calcOurContentVisibleRect(visibleRect); 4889 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4890 // should be in content coordinates. 4891 Rect bounds = nativeFocusCandidateNodeBounds(); 4892 Rect vBox = contentToViewRect(bounds); 4893 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4894 if (!Rect.intersects(bounds, visibleRect)) { 4895 revealSelection(); 4896 } 4897 updateWebTextViewPadding(); 4898 } 4899 4900 /** 4901 * Update the padding of mWebTextView based on the native textfield/textarea 4902 */ 4903 void updateWebTextViewPadding() { 4904 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4905 if (paddingRect != null) { 4906 // Use contentToViewDimension since these are the dimensions of 4907 // the padding. 4908 mWebTextView.setPadding( 4909 contentToViewDimension(paddingRect.left), 4910 contentToViewDimension(paddingRect.top), 4911 contentToViewDimension(paddingRect.right), 4912 contentToViewDimension(paddingRect.bottom)); 4913 } 4914 } 4915 4916 /** 4917 * Tell webkit to put the cursor on screen. 4918 */ 4919 /* package */ void revealSelection() { 4920 if (mWebViewCore != null) { 4921 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4922 } 4923 } 4924 4925 /** 4926 * Called by WebTextView to find saved form data associated with the 4927 * textfield 4928 * @param name Name of the textfield. 4929 * @param nodePointer Pointer to the node of the textfield, so it can be 4930 * compared to the currently focused textfield when the data is 4931 * retrieved. 4932 * @param autoFillable true if WebKit has determined this field is part of 4933 * a form that can be auto filled. 4934 * @param autoComplete true if the attribute "autocomplete" is set to true 4935 * on the textfield. 4936 */ 4937 /* package */ void requestFormData(String name, int nodePointer, 4938 boolean autoFillable, boolean autoComplete) { 4939 if (mWebViewCore.getSettings().getSaveFormData()) { 4940 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4941 update.arg1 = nodePointer; 4942 RequestFormData updater = new RequestFormData(name, getUrl(), 4943 update, autoFillable, autoComplete); 4944 Thread t = new Thread(updater); 4945 t.start(); 4946 } 4947 } 4948 4949 /** 4950 * Pass a message to find out the <label> associated with the <input> 4951 * identified by nodePointer 4952 * @param framePointer Pointer to the frame containing the <input> node 4953 * @param nodePointer Pointer to the node for which a <label> is desired. 4954 */ 4955 /* package */ void requestLabel(int framePointer, int nodePointer) { 4956 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4957 nodePointer); 4958 } 4959 4960 /* 4961 * This class requests an Adapter for the WebTextView which shows past 4962 * entries stored in the database. It is a Runnable so that it can be done 4963 * in its own thread, without slowing down the UI. 4964 */ 4965 private class RequestFormData implements Runnable { 4966 private String mName; 4967 private String mUrl; 4968 private Message mUpdateMessage; 4969 private boolean mAutoFillable; 4970 private boolean mAutoComplete; 4971 private WebSettings mWebSettings; 4972 4973 public RequestFormData(String name, String url, Message msg, 4974 boolean autoFillable, boolean autoComplete) { 4975 mName = name; 4976 mUrl = WebTextView.urlForAutoCompleteData(url); 4977 mUpdateMessage = msg; 4978 mAutoFillable = autoFillable; 4979 mAutoComplete = autoComplete; 4980 mWebSettings = getSettings(); 4981 } 4982 4983 public void run() { 4984 ArrayList<String> pastEntries = new ArrayList<String>(); 4985 4986 if (mAutoFillable) { 4987 // Note that code inside the adapter click handler in WebTextView depends 4988 // on the AutoFill item being at the top of the drop down list. If you change 4989 // the order, make sure to do it there too! 4990 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 4991 pastEntries.add(getResources().getText( 4992 com.android.internal.R.string.autofill_this_form).toString() + 4993 " " + 4994 mAutoFillData.getPreviewString()); 4995 mWebTextView.setAutoFillProfileIsSet(true); 4996 } else { 4997 // There is no autofill profile set up yet, so add an option that 4998 // will invite the user to set their profile up. 4999 pastEntries.add(getResources().getText( 5000 com.android.internal.R.string.setup_autofill).toString()); 5001 mWebTextView.setAutoFillProfileIsSet(false); 5002 } 5003 } 5004 5005 if (mAutoComplete) { 5006 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5007 } 5008 5009 if (pastEntries.size() > 0) { 5010 AutoCompleteAdapter adapter = new 5011 AutoCompleteAdapter(mContext, pastEntries); 5012 mUpdateMessage.obj = adapter; 5013 mUpdateMessage.sendToTarget(); 5014 } 5015 } 5016 } 5017 5018 /** 5019 * Dump the display tree to "/sdcard/displayTree.txt" 5020 * 5021 * @hide debug only 5022 */ 5023 public void dumpDisplayTree() { 5024 nativeDumpDisplayTree(getUrl()); 5025 } 5026 5027 /** 5028 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5029 * "/sdcard/domTree.txt" 5030 * 5031 * @hide debug only 5032 */ 5033 public void dumpDomTree(boolean toFile) { 5034 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5035 } 5036 5037 /** 5038 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5039 * to "/sdcard/renderTree.txt" 5040 * 5041 * @hide debug only 5042 */ 5043 public void dumpRenderTree(boolean toFile) { 5044 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5045 } 5046 5047 /** 5048 * Called by DRT on UI thread, need to proxy to WebCore thread. 5049 * 5050 * @hide debug only 5051 */ 5052 public void useMockDeviceOrientation() { 5053 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5054 } 5055 5056 /** 5057 * Called by DRT on WebCore thread. 5058 * 5059 * @hide debug only 5060 */ 5061 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5062 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5063 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5064 canProvideGamma, gamma); 5065 } 5066 5067 /** 5068 * Dump the V8 counters to standard output. 5069 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 5070 * true. Otherwise, this will do nothing. 5071 * 5072 * @hide debug only 5073 */ 5074 public void dumpV8Counters() { 5075 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 5076 } 5077 5078 // This is used to determine long press with the center key. Does not 5079 // affect long press with the trackball/touch. 5080 private boolean mGotCenterDown = false; 5081 5082 @Override 5083 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5084 if (mBlockWebkitViewMessages) { 5085 return false; 5086 } 5087 // send complex characters to webkit for use by JS and plugins 5088 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5089 // pass the key to DOM 5090 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5091 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5092 // return true as DOM handles the key 5093 return true; 5094 } 5095 return false; 5096 } 5097 5098 private boolean isEnterActionKey(int keyCode) { 5099 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5100 || keyCode == KeyEvent.KEYCODE_ENTER 5101 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5102 } 5103 5104 @Override 5105 public boolean onKeyDown(int keyCode, KeyEvent event) { 5106 if (DebugFlags.WEB_VIEW) { 5107 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5108 + "keyCode=" + keyCode 5109 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5110 } 5111 if (mBlockWebkitViewMessages) { 5112 return false; 5113 } 5114 5115 // don't implement accelerator keys here; defer to host application 5116 if (event.isCtrlPressed()) { 5117 return false; 5118 } 5119 5120 if (mNativeClass == 0) { 5121 return false; 5122 } 5123 5124 // do this hack up front, so it always works, regardless of touch-mode 5125 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5126 mAutoRedraw = !mAutoRedraw; 5127 if (mAutoRedraw) { 5128 invalidate(); 5129 } 5130 return true; 5131 } 5132 5133 // Bubble up the key event if 5134 // 1. it is a system key; or 5135 // 2. the host application wants to handle it; 5136 if (event.isSystem() 5137 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5138 return false; 5139 } 5140 5141 // accessibility support 5142 if (accessibilityScriptInjected()) { 5143 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5144 // if an accessibility script is injected we delegate to it the key handling. 5145 // this script is a screen reader which is a fully fledged solution for blind 5146 // users to navigate in and interact with web pages. 5147 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5148 return true; 5149 } else { 5150 // Clean up if accessibility was disabled after loading the current URL. 5151 mAccessibilityScriptInjected = false; 5152 } 5153 } else if (mAccessibilityInjector != null) { 5154 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5155 if (mAccessibilityInjector.onKeyEvent(event)) { 5156 // if an accessibility injector is present (no JavaScript enabled or the site 5157 // opts out injecting our JavaScript screen reader) we let it decide whether 5158 // to act on and consume the event. 5159 return true; 5160 } 5161 } else { 5162 // Clean up if accessibility was disabled after loading the current URL. 5163 mAccessibilityInjector = null; 5164 } 5165 } 5166 5167 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5168 if (event.hasNoModifiers()) { 5169 pageUp(false); 5170 return true; 5171 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5172 pageUp(true); 5173 return true; 5174 } 5175 } 5176 5177 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5178 if (event.hasNoModifiers()) { 5179 pageDown(false); 5180 return true; 5181 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5182 pageDown(true); 5183 return true; 5184 } 5185 } 5186 5187 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5188 pageUp(true); 5189 return true; 5190 } 5191 5192 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5193 pageDown(true); 5194 return true; 5195 } 5196 5197 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5198 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5199 switchOutDrawHistory(); 5200 if (nativePageShouldHandleShiftAndArrows()) { 5201 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5202 return true; 5203 } 5204 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5205 switch (keyCode) { 5206 case KeyEvent.KEYCODE_DPAD_UP: 5207 pageUp(true); 5208 return true; 5209 case KeyEvent.KEYCODE_DPAD_DOWN: 5210 pageDown(true); 5211 return true; 5212 case KeyEvent.KEYCODE_DPAD_LEFT: 5213 nativeClearCursor(); // start next trackball movement from page edge 5214 return pinScrollTo(0, mScrollY, true, 0); 5215 case KeyEvent.KEYCODE_DPAD_RIGHT: 5216 nativeClearCursor(); // start next trackball movement from page edge 5217 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5218 } 5219 } 5220 if (mSelectingText) { 5221 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5222 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5223 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5224 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5225 int multiplier = event.getRepeatCount() + 1; 5226 moveSelection(xRate * multiplier, yRate * multiplier); 5227 return true; 5228 } 5229 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5230 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5231 return true; 5232 } 5233 // Bubble up the key event as WebView doesn't handle it 5234 return false; 5235 } 5236 5237 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5238 switchOutDrawHistory(); 5239 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5240 || nativeCursorWantsKeyEvents(); 5241 if (event.getRepeatCount() == 0) { 5242 if (mSelectingText) { 5243 return true; // discard press if copy in progress 5244 } 5245 mGotCenterDown = true; 5246 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5247 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5248 if (!wantsKeyEvents) return true; 5249 } 5250 // Bubble up the key event as WebView doesn't handle it 5251 if (!wantsKeyEvents) return false; 5252 } 5253 5254 if (getSettings().getNavDump()) { 5255 switch (keyCode) { 5256 case KeyEvent.KEYCODE_4: 5257 dumpDisplayTree(); 5258 break; 5259 case KeyEvent.KEYCODE_5: 5260 case KeyEvent.KEYCODE_6: 5261 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5262 break; 5263 case KeyEvent.KEYCODE_7: 5264 case KeyEvent.KEYCODE_8: 5265 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5266 break; 5267 case KeyEvent.KEYCODE_9: 5268 nativeInstrumentReport(); 5269 return true; 5270 } 5271 } 5272 5273 if (nativeCursorIsTextInput()) { 5274 // This message will put the node in focus, for the DOM's notion 5275 // of focus. 5276 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5277 nativeCursorNodePointer()); 5278 // This will bring up the WebTextView and put it in focus, for 5279 // our view system's notion of focus 5280 rebuildWebTextView(); 5281 // Now we need to pass the event to it 5282 if (inEditingMode()) { 5283 mWebTextView.setDefaultSelection(); 5284 return mWebTextView.dispatchKeyEvent(event); 5285 } 5286 } else if (nativeHasFocusNode()) { 5287 // In this case, the cursor is not on a text input, but the focus 5288 // might be. Check it, and if so, hand over to the WebTextView. 5289 rebuildWebTextView(); 5290 if (inEditingMode()) { 5291 mWebTextView.setDefaultSelection(); 5292 return mWebTextView.dispatchKeyEvent(event); 5293 } 5294 } 5295 5296 // TODO: should we pass all the keys to DOM or check the meta tag 5297 if (nativeCursorWantsKeyEvents() || true) { 5298 // pass the key to DOM 5299 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5300 // return true as DOM handles the key 5301 return true; 5302 } 5303 5304 // Bubble up the key event as WebView doesn't handle it 5305 return false; 5306 } 5307 5308 @Override 5309 public boolean onKeyUp(int keyCode, KeyEvent event) { 5310 if (DebugFlags.WEB_VIEW) { 5311 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5312 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5313 } 5314 if (mBlockWebkitViewMessages) { 5315 return false; 5316 } 5317 5318 if (mNativeClass == 0) { 5319 return false; 5320 } 5321 5322 // special CALL handling when cursor node's href is "tel:XXX" 5323 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5324 String text = nativeCursorText(); 5325 if (!nativeCursorIsTextInput() && text != null 5326 && text.startsWith(SCHEME_TEL)) { 5327 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5328 getContext().startActivity(intent); 5329 return true; 5330 } 5331 } 5332 5333 // Bubble up the key event if 5334 // 1. it is a system key; or 5335 // 2. the host application wants to handle it; 5336 if (event.isSystem() 5337 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5338 return false; 5339 } 5340 5341 // accessibility support 5342 if (accessibilityScriptInjected()) { 5343 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5344 // if an accessibility script is injected we delegate to it the key handling. 5345 // this script is a screen reader which is a fully fledged solution for blind 5346 // users to navigate in and interact with web pages. 5347 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5348 return true; 5349 } else { 5350 // Clean up if accessibility was disabled after loading the current URL. 5351 mAccessibilityScriptInjected = false; 5352 } 5353 } else if (mAccessibilityInjector != null) { 5354 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5355 if (mAccessibilityInjector.onKeyEvent(event)) { 5356 // if an accessibility injector is present (no JavaScript enabled or the site 5357 // opts out injecting our JavaScript screen reader) we let it decide whether to 5358 // act on and consume the event. 5359 return true; 5360 } 5361 } else { 5362 // Clean up if accessibility was disabled after loading the current URL. 5363 mAccessibilityInjector = null; 5364 } 5365 } 5366 5367 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5368 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5369 if (nativePageShouldHandleShiftAndArrows()) { 5370 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5371 return true; 5372 } 5373 // always handle the navigation keys in the UI thread 5374 // Bubble up the key event as WebView doesn't handle it 5375 return false; 5376 } 5377 5378 if (isEnterActionKey(keyCode)) { 5379 // remove the long press message first 5380 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5381 mGotCenterDown = false; 5382 5383 if (mSelectingText) { 5384 if (mExtendSelection) { 5385 copySelection(); 5386 selectionDone(); 5387 } else { 5388 mExtendSelection = true; 5389 nativeSetExtendSelection(); 5390 invalidate(); // draw the i-beam instead of the arrow 5391 } 5392 return true; // discard press if copy in progress 5393 } 5394 5395 // perform the single click 5396 Rect visibleRect = sendOurVisibleRect(); 5397 // Note that sendOurVisibleRect calls viewToContent, so the 5398 // coordinates should be in content coordinates. 5399 if (!nativeCursorIntersects(visibleRect)) { 5400 return false; 5401 } 5402 WebViewCore.CursorData data = cursorData(); 5403 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5404 playSoundEffect(SoundEffectConstants.CLICK); 5405 if (nativeCursorIsTextInput()) { 5406 rebuildWebTextView(); 5407 centerKeyPressOnTextField(); 5408 if (inEditingMode()) { 5409 mWebTextView.setDefaultSelection(); 5410 } 5411 return true; 5412 } 5413 clearTextEntry(); 5414 nativeShowCursorTimed(); 5415 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5416 return true; 5417 } 5418 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5419 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5420 nativeCursorNodePointer()); 5421 return true; 5422 } 5423 } 5424 5425 // TODO: should we pass all the keys to DOM or check the meta tag 5426 if (nativeCursorWantsKeyEvents() || true) { 5427 // pass the key to DOM 5428 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5429 // return true as DOM handles the key 5430 return true; 5431 } 5432 5433 // Bubble up the key event as WebView doesn't handle it 5434 return false; 5435 } 5436 5437 /* 5438 * Enter selecting text mode, and see if CAB should be shown. 5439 * Returns true if the WebView is now in 5440 * selecting text mode (including if it was already in that mode, and this 5441 * method did nothing). 5442 */ 5443 private boolean setUpSelect(boolean selectWord, int x, int y) { 5444 if (0 == mNativeClass) return false; // client isn't initialized 5445 if (inFullScreenMode()) return false; 5446 if (mSelectingText) return true; 5447 nativeResetSelection(); 5448 if (selectWord && !nativeWordSelection(x, y)) { 5449 selectionDone(); 5450 return false; 5451 } 5452 mSelectCallback = new SelectActionModeCallback(); 5453 mSelectCallback.setWebView(this); 5454 if (startActionMode(mSelectCallback) == null) { 5455 // There is no ActionMode, so do not allow the user to modify a 5456 // selection. 5457 selectionDone(); 5458 return false; 5459 } 5460 mExtendSelection = false; 5461 mSelectingText = mDrawSelectionPointer = true; 5462 if (DEBUG_TEXT_HANDLES) { 5463 // Debugging text handles requires running in software mode 5464 setLayerType(LAYER_TYPE_SOFTWARE, null); 5465 } 5466 // don't let the picture change during text selection 5467 WebViewCore.pauseUpdatePicture(mWebViewCore); 5468 if (nativeHasCursorNode()) { 5469 Rect rect = nativeCursorNodeBounds(); 5470 mSelectX = contentToViewX(rect.left); 5471 mSelectY = contentToViewY(rect.top); 5472 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5473 mSelectX = mScrollX + mLastTouchX; 5474 mSelectY = mScrollY + mLastTouchY; 5475 } else { 5476 mSelectX = mScrollX + getViewWidth() / 2; 5477 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5478 } 5479 nativeHideCursor(); 5480 mMinAutoScrollX = 0; 5481 mMaxAutoScrollX = getViewWidth(); 5482 mMinAutoScrollY = 0; 5483 mMaxAutoScrollY = getViewHeightWithTitle(); 5484 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 5485 viewToContentY(mSelectY), mScrollingLayerRect, 5486 mScrollingLayerBounds); 5487 if (mScrollingLayer != 0) { 5488 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5489 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5490 contentToViewX(mScrollingLayerBounds.left)); 5491 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5492 contentToViewX(mScrollingLayerBounds.right)); 5493 } 5494 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5495 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5496 contentToViewY(mScrollingLayerBounds.top)); 5497 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5498 contentToViewY(mScrollingLayerBounds.bottom)); 5499 } 5500 } 5501 mMinAutoScrollX += SELECT_SCROLL; 5502 mMaxAutoScrollX -= SELECT_SCROLL; 5503 mMinAutoScrollY += SELECT_SCROLL; 5504 mMaxAutoScrollY -= SELECT_SCROLL; 5505 return true; 5506 } 5507 5508 /** 5509 * Use this method to put the WebView into text selection mode. 5510 * Do not rely on this functionality; it will be deprecated in the future. 5511 * @deprecated This method is now obsolete. 5512 */ 5513 @Deprecated 5514 public void emulateShiftHeld() { 5515 checkThread(); 5516 setUpSelect(false, 0, 0); 5517 } 5518 5519 /** 5520 * Select all of the text in this WebView. 5521 * 5522 * @hide pending API council approval. 5523 */ 5524 public void selectAll() { 5525 if (0 == mNativeClass) return; // client isn't initialized 5526 if (inFullScreenMode()) return; 5527 if (!mSelectingText) { 5528 // retrieve a point somewhere within the text 5529 Point select = nativeSelectableText(); 5530 if (!selectText(select.x, select.y)) return; 5531 } 5532 nativeSelectAll(); 5533 mDrawSelectionPointer = false; 5534 mExtendSelection = true; 5535 invalidate(); 5536 } 5537 5538 /** 5539 * Called when the selection has been removed. 5540 */ 5541 void selectionDone() { 5542 if (mSelectingText) { 5543 mSelectingText = false; 5544 if (DEBUG_TEXT_HANDLES) { 5545 // Debugging text handles required running in software mode, set 5546 // back to default now 5547 setLayerType(LAYER_TYPE_NONE, null); 5548 } 5549 // finish is idempotent, so this is fine even if selectionDone was 5550 // called by mSelectCallback.onDestroyActionMode 5551 mSelectCallback.finish(); 5552 mSelectCallback = null; 5553 WebViewCore.resumePriority(); 5554 WebViewCore.resumeUpdatePicture(mWebViewCore); 5555 invalidate(); // redraw without selection 5556 mAutoScrollX = 0; 5557 mAutoScrollY = 0; 5558 mSentAutoScrollMessage = false; 5559 } 5560 } 5561 5562 /** 5563 * Copy the selection to the clipboard 5564 * 5565 * @hide pending API council approval. 5566 */ 5567 public boolean copySelection() { 5568 boolean copiedSomething = false; 5569 String selection = getSelection(); 5570 if (selection != null && selection != "") { 5571 if (DebugFlags.WEB_VIEW) { 5572 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5573 } 5574 Toast.makeText(mContext 5575 , com.android.internal.R.string.text_copied 5576 , Toast.LENGTH_SHORT).show(); 5577 copiedSomething = true; 5578 ClipboardManager cm = (ClipboardManager)getContext() 5579 .getSystemService(Context.CLIPBOARD_SERVICE); 5580 cm.setText(selection); 5581 } 5582 invalidate(); // remove selection region and pointer 5583 return copiedSomething; 5584 } 5585 5586 /** 5587 * @hide pending API Council approval. 5588 */ 5589 public SearchBox getSearchBox() { 5590 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5591 return null; 5592 } 5593 return mWebViewCore.getBrowserFrame().getSearchBox(); 5594 } 5595 5596 /** 5597 * Returns the currently highlighted text as a string. 5598 */ 5599 String getSelection() { 5600 if (mNativeClass == 0) return ""; 5601 return nativeGetSelection(); 5602 } 5603 5604 @Override 5605 protected void onAttachedToWindow() { 5606 super.onAttachedToWindow(); 5607 if (hasWindowFocus()) setActive(true); 5608 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5609 if (mGlobalLayoutListener == null) { 5610 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5611 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5612 } 5613 if (mScrollChangedListener == null) { 5614 mScrollChangedListener = new InnerScrollChangedListener(); 5615 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5616 } 5617 5618 addAccessibilityApisToJavaScript(); 5619 5620 mTouchEventQueue.reset(); 5621 } 5622 5623 @Override 5624 protected void onDetachedFromWindow() { 5625 clearHelpers(); 5626 mZoomManager.dismissZoomPicker(); 5627 if (hasWindowFocus()) setActive(false); 5628 5629 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5630 if (mGlobalLayoutListener != null) { 5631 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5632 mGlobalLayoutListener = null; 5633 } 5634 if (mScrollChangedListener != null) { 5635 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5636 mScrollChangedListener = null; 5637 } 5638 5639 removeAccessibilityApisFromJavaScript(); 5640 5641 super.onDetachedFromWindow(); 5642 } 5643 5644 @Override 5645 protected void onVisibilityChanged(View changedView, int visibility) { 5646 super.onVisibilityChanged(changedView, visibility); 5647 // The zoomManager may be null if the webview is created from XML that 5648 // specifies the view's visibility param as not visible (see http://b/2794841) 5649 if (visibility != View.VISIBLE && mZoomManager != null) { 5650 mZoomManager.dismissZoomPicker(); 5651 } 5652 updateDrawingState(); 5653 } 5654 5655 /** 5656 * @deprecated WebView no longer needs to implement 5657 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5658 */ 5659 @Deprecated 5660 public void onChildViewAdded(View parent, View child) {} 5661 5662 /** 5663 * @deprecated WebView no longer needs to implement 5664 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5665 */ 5666 @Deprecated 5667 public void onChildViewRemoved(View p, View child) {} 5668 5669 /** 5670 * @deprecated WebView should not have implemented 5671 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5672 */ 5673 @Deprecated 5674 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5675 } 5676 5677 void setActive(boolean active) { 5678 if (active) { 5679 if (hasFocus()) { 5680 // If our window regained focus, and we have focus, then begin 5681 // drawing the cursor ring 5682 mDrawCursorRing = true; 5683 setFocusControllerActive(true); 5684 } else { 5685 if (!inEditingMode()) { 5686 // If our window gained focus, but we do not have it, do not 5687 // draw the cursor ring. 5688 mDrawCursorRing = false; 5689 setFocusControllerActive(false); 5690 } 5691 // We do not call recordButtons here because we assume 5692 // that when we lost focus, or window focus, it got called with 5693 // false for the first parameter 5694 } 5695 } else { 5696 if (!mZoomManager.isZoomPickerVisible()) { 5697 /* 5698 * The external zoom controls come in their own window, so our 5699 * window loses focus. Our policy is to not draw the cursor ring 5700 * if our window is not focused, but this is an exception since 5701 * the user can still navigate the web page with the zoom 5702 * controls showing. 5703 */ 5704 mDrawCursorRing = false; 5705 } 5706 mKeysPressed.clear(); 5707 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5708 mTouchMode = TOUCH_DONE_MODE; 5709 setFocusControllerActive(false); 5710 } 5711 invalidate(); 5712 } 5713 5714 // To avoid drawing the cursor ring, and remove the TextView when our window 5715 // loses focus. 5716 @Override 5717 public void onWindowFocusChanged(boolean hasWindowFocus) { 5718 setActive(hasWindowFocus); 5719 if (hasWindowFocus) { 5720 JWebCoreJavaBridge.setActiveWebView(this); 5721 if (mPictureUpdatePausedForFocusChange) { 5722 WebViewCore.resumeUpdatePicture(mWebViewCore); 5723 mPictureUpdatePausedForFocusChange = false; 5724 } 5725 } else { 5726 JWebCoreJavaBridge.removeActiveWebView(this); 5727 final WebSettings settings = getSettings(); 5728 if (settings != null && settings.enableSmoothTransition() && 5729 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5730 WebViewCore.pauseUpdatePicture(mWebViewCore); 5731 mPictureUpdatePausedForFocusChange = true; 5732 } 5733 } 5734 super.onWindowFocusChanged(hasWindowFocus); 5735 } 5736 5737 /* 5738 * Pass a message to WebCore Thread, telling the WebCore::Page's 5739 * FocusController to be "inactive" so that it will 5740 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5741 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5742 */ 5743 /* package */ void setFocusControllerActive(boolean active) { 5744 if (mWebViewCore == null) return; 5745 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5746 // Need to send this message after the document regains focus. 5747 if (active && mListBoxMessage != null) { 5748 mWebViewCore.sendMessage(mListBoxMessage); 5749 mListBoxMessage = null; 5750 } 5751 } 5752 5753 @Override 5754 protected void onFocusChanged(boolean focused, int direction, 5755 Rect previouslyFocusedRect) { 5756 if (DebugFlags.WEB_VIEW) { 5757 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5758 } 5759 if (focused) { 5760 // When we regain focus, if we have window focus, resume drawing 5761 // the cursor ring 5762 if (hasWindowFocus()) { 5763 mDrawCursorRing = true; 5764 setFocusControllerActive(true); 5765 //} else { 5766 // The WebView has gained focus while we do not have 5767 // windowfocus. When our window lost focus, we should have 5768 // called recordButtons(false...) 5769 } 5770 } else { 5771 // When we lost focus, unless focus went to the TextView (which is 5772 // true if we are in editing mode), stop drawing the cursor ring. 5773 if (!inEditingMode()) { 5774 mDrawCursorRing = false; 5775 setFocusControllerActive(false); 5776 } 5777 mKeysPressed.clear(); 5778 } 5779 5780 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5781 } 5782 5783 void setGLRectViewport() { 5784 // Use the getGlobalVisibleRect() to get the intersection among the parents 5785 // visible == false means we're clipped - send a null rect down to indicate that 5786 // we should not draw 5787 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5788 if (visible) { 5789 // Then need to invert the Y axis, just for GL 5790 View rootView = getRootView(); 5791 int rootViewHeight = rootView.getHeight(); 5792 mViewRectViewport.set(mGLRectViewport); 5793 int savedWebViewBottom = mGLRectViewport.bottom; 5794 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5795 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5796 mGLViewportEmpty = false; 5797 } else { 5798 mGLViewportEmpty = true; 5799 } 5800 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5801 mGLViewportEmpty ? null : mViewRectViewport); 5802 } 5803 5804 /** 5805 * @hide 5806 */ 5807 @Override 5808 protected boolean setFrame(int left, int top, int right, int bottom) { 5809 boolean changed = super.setFrame(left, top, right, bottom); 5810 if (!changed && mHeightCanMeasure) { 5811 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5812 // in WebViewCore after we get the first layout. We do call 5813 // requestLayout() when we get contentSizeChanged(). But the View 5814 // system won't call onSizeChanged if the dimension is not changed. 5815 // In this case, we need to call sendViewSizeZoom() explicitly to 5816 // notify the WebKit about the new dimensions. 5817 sendViewSizeZoom(false); 5818 } 5819 setGLRectViewport(); 5820 return changed; 5821 } 5822 5823 @Override 5824 protected void onSizeChanged(int w, int h, int ow, int oh) { 5825 super.onSizeChanged(w, h, ow, oh); 5826 5827 // adjust the max viewport width depending on the view dimensions. This 5828 // is to ensure the scaling is not going insane. So do not shrink it if 5829 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5830 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5831 if (newMaxViewportWidth > sMaxViewportWidth) { 5832 sMaxViewportWidth = newMaxViewportWidth; 5833 } 5834 5835 mZoomManager.onSizeChanged(w, h, ow, oh); 5836 5837 if (mLoadedPicture != null && mDelaySetPicture == null) { 5838 // Size changes normally result in a new picture 5839 // Re-set the loaded picture to simulate that 5840 // However, do not update the base layer as that hasn't changed 5841 setNewPicture(mLoadedPicture, false); 5842 } 5843 } 5844 5845 @Override 5846 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5847 super.onScrollChanged(l, t, oldl, oldt); 5848 if (!mInOverScrollMode) { 5849 sendOurVisibleRect(); 5850 // update WebKit if visible title bar height changed. The logic is same 5851 // as getVisibleTitleHeightImpl. 5852 int titleHeight = getTitleHeight(); 5853 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5854 sendViewSizeZoom(false); 5855 } 5856 } 5857 } 5858 5859 @Override 5860 public boolean dispatchKeyEvent(KeyEvent event) { 5861 switch (event.getAction()) { 5862 case KeyEvent.ACTION_DOWN: 5863 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5864 break; 5865 case KeyEvent.ACTION_MULTIPLE: 5866 // Always accept the action. 5867 break; 5868 case KeyEvent.ACTION_UP: 5869 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5870 if (location == -1) { 5871 // We did not receive the key down for this key, so do not 5872 // handle the key up. 5873 return false; 5874 } else { 5875 // We did receive the key down. Handle the key up, and 5876 // remove it from our pressed keys. 5877 mKeysPressed.remove(location); 5878 } 5879 break; 5880 default: 5881 // Accept the action. This should not happen, unless a new 5882 // action is added to KeyEvent. 5883 break; 5884 } 5885 if (inEditingMode() && mWebTextView.isFocused()) { 5886 // Ensure that the WebTextView gets the event, even if it does 5887 // not currently have a bounds. 5888 return mWebTextView.dispatchKeyEvent(event); 5889 } else { 5890 return super.dispatchKeyEvent(event); 5891 } 5892 } 5893 5894 /* 5895 * Here is the snap align logic: 5896 * 1. If it starts nearly horizontally or vertically, snap align; 5897 * 2. If there is a dramitic direction change, let it go; 5898 * 5899 * Adjustable parameters. Angle is the radians on a unit circle, limited 5900 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 5901 */ 5902 private static final float HSLOPE_TO_START_SNAP = .25f; 5903 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 5904 private static final float VSLOPE_TO_START_SNAP = 1.25f; 5905 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 5906 /* 5907 * These values are used to influence the average angle when entering 5908 * snap mode. If is is the first movement entering snap, we set the average 5909 * to the appropriate ideal. If the user is entering into snap after the 5910 * first movement, then we average the average angle with these values. 5911 */ 5912 private static final float ANGLE_VERT = 2f; 5913 private static final float ANGLE_HORIZ = 0f; 5914 /* 5915 * The modified moving average weight. 5916 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 5917 */ 5918 private static final float MMA_WEIGHT_N = 5; 5919 5920 private boolean hitFocusedPlugin(int contentX, int contentY) { 5921 if (DebugFlags.WEB_VIEW) { 5922 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5923 Rect r = nativeFocusNodeBounds(); 5924 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5925 + ", " + r.right + ", " + r.bottom + ")"); 5926 } 5927 return nativeFocusIsPlugin() 5928 && nativeFocusNodeBounds().contains(contentX, contentY); 5929 } 5930 5931 private boolean shouldForwardTouchEvent() { 5932 if (mFullScreenHolder != null) return true; 5933 if (mBlockWebkitViewMessages) return false; 5934 return mForwardTouchEvents 5935 && !mSelectingText 5936 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5937 && mPreventDefault != PREVENT_DEFAULT_NO; 5938 } 5939 5940 private boolean inFullScreenMode() { 5941 return mFullScreenHolder != null; 5942 } 5943 5944 private void dismissFullScreenMode() { 5945 if (inFullScreenMode()) { 5946 mFullScreenHolder.hide(); 5947 mFullScreenHolder = null; 5948 } 5949 } 5950 5951 void onPinchToZoomAnimationStart() { 5952 // cancel the single touch handling 5953 cancelTouch(); 5954 onZoomAnimationStart(); 5955 } 5956 5957 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5958 onZoomAnimationEnd(); 5959 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5960 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5961 // as it may trigger the unwanted fling. 5962 mTouchMode = TOUCH_PINCH_DRAG; 5963 mConfirmMove = true; 5964 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5965 } 5966 5967 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5968 // layer is found. 5969 private void startScrollingLayer(float x, float y) { 5970 int contentX = viewToContentX((int) x + mScrollX); 5971 int contentY = viewToContentY((int) y + mScrollY); 5972 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5973 mScrollingLayerRect, mScrollingLayerBounds); 5974 if (mScrollingLayer != 0) { 5975 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5976 } 5977 } 5978 5979 // 1/(density * density) used to compute the distance between points. 5980 // Computed in init(). 5981 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5982 5983 // The distance between two points reported in onTouchEvent scaled by the 5984 // density of the screen. 5985 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5986 5987 @Override 5988 public boolean onHoverEvent(MotionEvent event) { 5989 if (mNativeClass == 0) { 5990 return false; 5991 } 5992 WebViewCore.CursorData data = cursorDataNoPosition(); 5993 data.mX = viewToContentX((int) event.getX() + mScrollX); 5994 data.mY = viewToContentY((int) event.getY() + mScrollY); 5995 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5996 return true; 5997 } 5998 5999 @Override 6000 public boolean onTouchEvent(MotionEvent ev) { 6001 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6002 return false; 6003 } 6004 6005 if (DebugFlags.WEB_VIEW) { 6006 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6007 + " mTouchMode=" + mTouchMode 6008 + " numPointers=" + ev.getPointerCount()); 6009 } 6010 6011 // If WebKit wasn't interested in this multitouch gesture, enqueue 6012 // the event for handling directly rather than making the round trip 6013 // to WebKit and back. 6014 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6015 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6016 } else { 6017 mTouchEventQueue.enqueueTouchEvent(ev); 6018 } 6019 6020 // Since all events are handled asynchronously, we always want the gesture stream. 6021 return true; 6022 } 6023 6024 private float calculateDragAngle(int dx, int dy) { 6025 dx = Math.abs(dx); 6026 dy = Math.abs(dy); 6027 return (float) Math.atan2(dy, dx); 6028 } 6029 6030 /* 6031 * Common code for single touch and multi-touch. 6032 * (x, y) denotes current focus point, which is the touch point for single touch 6033 * and the middle point for multi-touch. 6034 */ 6035 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6036 long eventTime = ev.getEventTime(); 6037 6038 // Due to the touch screen edge effect, a touch closer to the edge 6039 // always snapped to the edge. As getViewWidth() can be different from 6040 // getWidth() due to the scrollbar, adjusting the point to match 6041 // getViewWidth(). Same applied to the height. 6042 x = Math.min(x, getViewWidth() - 1); 6043 y = Math.min(y, getViewHeightWithTitle() - 1); 6044 6045 int deltaX = mLastTouchX - x; 6046 int deltaY = mLastTouchY - y; 6047 int contentX = viewToContentX(x + mScrollX); 6048 int contentY = viewToContentY(y + mScrollY); 6049 6050 switch (action) { 6051 case MotionEvent.ACTION_DOWN: { 6052 mPreventDefault = PREVENT_DEFAULT_NO; 6053 mConfirmMove = false; 6054 mInitialHitTestResult = null; 6055 if (!mScroller.isFinished()) { 6056 // stop the current scroll animation, but if this is 6057 // the start of a fling, allow it to add to the current 6058 // fling's velocity 6059 mScroller.abortAnimation(); 6060 mTouchMode = TOUCH_DRAG_START_MODE; 6061 mConfirmMove = true; 6062 nativeSetIsScrolling(false); 6063 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6064 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6065 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6066 removeTouchHighlight(); 6067 } 6068 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6069 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6070 } else { 6071 // commit the short press action for the previous tap 6072 doShortPress(); 6073 mTouchMode = TOUCH_INIT_MODE; 6074 mDeferTouchProcess = !mBlockWebkitViewMessages 6075 && (!inFullScreenMode() && mForwardTouchEvents) 6076 ? hitFocusedPlugin(contentX, contentY) 6077 : false; 6078 } 6079 } else { // the normal case 6080 mTouchMode = TOUCH_INIT_MODE; 6081 mDeferTouchProcess = !mBlockWebkitViewMessages 6082 && (!inFullScreenMode() && mForwardTouchEvents) 6083 ? hitFocusedPlugin(contentX, contentY) 6084 : false; 6085 if (!mBlockWebkitViewMessages) { 6086 mWebViewCore.sendMessage( 6087 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6088 } 6089 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6090 TouchHighlightData data = new TouchHighlightData(); 6091 data.mX = contentX; 6092 data.mY = contentY; 6093 data.mNativeLayerRect = new Rect(); 6094 data.mNativeLayer = nativeScrollableLayer( 6095 contentX, contentY, data.mNativeLayerRect, null); 6096 data.mSlop = viewToContentDimension(mNavSlop); 6097 mTouchHighlightRegion.setEmpty(); 6098 if (!mBlockWebkitViewMessages) { 6099 mTouchHighlightRequested = System.currentTimeMillis(); 6100 mWebViewCore.sendMessageAtFrontOfQueue( 6101 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data); 6102 } 6103 if (DEBUG_TOUCH_HIGHLIGHT) { 6104 if (getSettings().getNavDump()) { 6105 mTouchHighlightX = (int) x + mScrollX; 6106 mTouchHighlightY = (int) y + mScrollY; 6107 mPrivateHandler.postDelayed(new Runnable() { 6108 public void run() { 6109 mTouchHighlightX = mTouchHighlightY = 0; 6110 invalidate(); 6111 } 6112 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6113 } 6114 } 6115 } 6116 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6117 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6118 (eventTime - mLastTouchUpTime), eventTime); 6119 } 6120 if (mSelectingText) { 6121 mDrawSelectionPointer = false; 6122 mSelectionStarted = nativeStartSelection(contentX, contentY); 6123 if (DebugFlags.WEB_VIEW) { 6124 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6125 } 6126 invalidate(); 6127 } 6128 } 6129 // Trigger the link 6130 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6131 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6132 mPrivateHandler.sendEmptyMessageDelayed( 6133 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6134 mPrivateHandler.sendEmptyMessageDelayed( 6135 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6136 if (inFullScreenMode() || mDeferTouchProcess) { 6137 mPreventDefault = PREVENT_DEFAULT_YES; 6138 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6139 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6140 } else { 6141 mPreventDefault = PREVENT_DEFAULT_NO; 6142 } 6143 // pass the touch events from UI thread to WebCore thread 6144 if (shouldForwardTouchEvent()) { 6145 TouchEventData ted = new TouchEventData(); 6146 ted.mAction = action; 6147 ted.mIds = new int[1]; 6148 ted.mIds[0] = ev.getPointerId(0); 6149 ted.mPoints = new Point[1]; 6150 ted.mPoints[0] = new Point(contentX, contentY); 6151 ted.mPointsInView = new Point[1]; 6152 ted.mPointsInView[0] = new Point(x, y); 6153 ted.mMetaState = ev.getMetaState(); 6154 ted.mReprocess = mDeferTouchProcess; 6155 ted.mNativeLayer = nativeScrollableLayer( 6156 contentX, contentY, ted.mNativeLayerRect, null); 6157 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6158 mTouchEventQueue.preQueueTouchEventData(ted); 6159 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6160 if (mDeferTouchProcess) { 6161 // still needs to set them for compute deltaX/Y 6162 mLastTouchX = x; 6163 mLastTouchY = y; 6164 break; 6165 } 6166 if (!inFullScreenMode()) { 6167 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6168 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6169 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6170 action, 0), TAP_TIMEOUT); 6171 } 6172 } 6173 } 6174 startTouch(x, y, eventTime); 6175 break; 6176 } 6177 case MotionEvent.ACTION_MOVE: { 6178 boolean firstMove = false; 6179 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6180 >= mTouchSlopSquare) { 6181 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6182 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6183 mConfirmMove = true; 6184 firstMove = true; 6185 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6186 mTouchMode = TOUCH_INIT_MODE; 6187 } 6188 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6189 removeTouchHighlight(); 6190 } 6191 } 6192 // pass the touch events from UI thread to WebCore thread 6193 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6194 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6195 TouchEventData ted = new TouchEventData(); 6196 ted.mAction = action; 6197 ted.mIds = new int[1]; 6198 ted.mIds[0] = ev.getPointerId(0); 6199 ted.mPoints = new Point[1]; 6200 ted.mPoints[0] = new Point(contentX, contentY); 6201 ted.mPointsInView = new Point[1]; 6202 ted.mPointsInView[0] = new Point(x, y); 6203 ted.mMetaState = ev.getMetaState(); 6204 ted.mReprocess = mDeferTouchProcess; 6205 ted.mNativeLayer = mScrollingLayer; 6206 ted.mNativeLayerRect.set(mScrollingLayerRect); 6207 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6208 mTouchEventQueue.preQueueTouchEventData(ted); 6209 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6210 mLastSentTouchTime = eventTime; 6211 if (mDeferTouchProcess) { 6212 break; 6213 } 6214 if (firstMove && !inFullScreenMode()) { 6215 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6216 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6217 action, 0), TAP_TIMEOUT); 6218 } 6219 } 6220 if (mTouchMode == TOUCH_DONE_MODE 6221 || mPreventDefault == PREVENT_DEFAULT_YES) { 6222 // no dragging during scroll zoom animation, or when prevent 6223 // default is yes 6224 break; 6225 } 6226 if (mVelocityTracker == null) { 6227 Log.e(LOGTAG, "Got null mVelocityTracker when " 6228 + "mPreventDefault = " + mPreventDefault 6229 + " mDeferTouchProcess = " + mDeferTouchProcess 6230 + " mTouchMode = " + mTouchMode); 6231 } else { 6232 mVelocityTracker.addMovement(ev); 6233 } 6234 if (mSelectingText && mSelectionStarted) { 6235 if (DebugFlags.WEB_VIEW) { 6236 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6237 } 6238 ViewParent parent = getParent(); 6239 if (parent != null) { 6240 parent.requestDisallowInterceptTouchEvent(true); 6241 } 6242 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6243 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6244 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6245 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6246 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6247 && !mSentAutoScrollMessage) { 6248 mSentAutoScrollMessage = true; 6249 mPrivateHandler.sendEmptyMessageDelayed( 6250 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6251 } 6252 if (deltaX != 0 || deltaY != 0) { 6253 nativeExtendSelection(contentX, contentY); 6254 invalidate(); 6255 } 6256 break; 6257 } 6258 6259 if (mTouchMode != TOUCH_DRAG_MODE && 6260 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6261 6262 if (!mConfirmMove) { 6263 break; 6264 } 6265 6266 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6267 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6268 // track mLastTouchTime as we may need to do fling at 6269 // ACTION_UP 6270 mLastTouchTime = eventTime; 6271 break; 6272 } 6273 6274 // Only lock dragging to one axis if we don't have a scale in progress. 6275 // Scaling implies free-roaming movement. Note this is only ever a question 6276 // if mZoomManager.supportsPanDuringZoom() is true. 6277 final ScaleGestureDetector detector = 6278 mZoomManager.getMultiTouchGestureDetector(); 6279 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6280 if (detector == null || !detector.isInProgress()) { 6281 // if it starts nearly horizontal or vertical, enforce it 6282 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6283 mSnapScrollMode = SNAP_X; 6284 mSnapPositive = deltaX > 0; 6285 mAverageAngle = ANGLE_HORIZ; 6286 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6287 mSnapScrollMode = SNAP_Y; 6288 mSnapPositive = deltaY > 0; 6289 mAverageAngle = ANGLE_VERT; 6290 } 6291 } 6292 6293 mTouchMode = TOUCH_DRAG_MODE; 6294 mLastTouchX = x; 6295 mLastTouchY = y; 6296 deltaX = 0; 6297 deltaY = 0; 6298 6299 startScrollingLayer(x, y); 6300 startDrag(); 6301 } 6302 6303 // do pan 6304 boolean done = false; 6305 boolean keepScrollBarsVisible = false; 6306 if (deltaX == 0 && deltaY == 0) { 6307 keepScrollBarsVisible = done = true; 6308 } else { 6309 mAverageAngle += 6310 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6311 / MMA_WEIGHT_N; 6312 if (mSnapScrollMode != SNAP_NONE) { 6313 if (mSnapScrollMode == SNAP_Y) { 6314 // radical change means getting out of snap mode 6315 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6316 mSnapScrollMode = SNAP_NONE; 6317 } 6318 } 6319 if (mSnapScrollMode == SNAP_X) { 6320 // radical change means getting out of snap mode 6321 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6322 mSnapScrollMode = SNAP_NONE; 6323 } 6324 } 6325 } else { 6326 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6327 mSnapScrollMode = SNAP_X; 6328 mSnapPositive = deltaX > 0; 6329 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6330 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6331 mSnapScrollMode = SNAP_Y; 6332 mSnapPositive = deltaY > 0; 6333 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6334 } 6335 } 6336 if (mSnapScrollMode != SNAP_NONE) { 6337 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6338 deltaY = 0; 6339 } else { 6340 deltaX = 0; 6341 } 6342 } 6343 mLastTouchX = x; 6344 mLastTouchY = y; 6345 6346 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6347 mHeldMotionless = MOTIONLESS_FALSE; 6348 nativeSetIsScrolling(true); 6349 } else { 6350 mHeldMotionless = MOTIONLESS_TRUE; 6351 nativeSetIsScrolling(false); 6352 keepScrollBarsVisible = true; 6353 } 6354 6355 mLastTouchTime = eventTime; 6356 } 6357 6358 doDrag(deltaX, deltaY); 6359 6360 // Turn off scrollbars when dragging a layer. 6361 if (keepScrollBarsVisible && 6362 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6363 if (mHeldMotionless != MOTIONLESS_TRUE) { 6364 mHeldMotionless = MOTIONLESS_TRUE; 6365 invalidate(); 6366 } 6367 // keep the scrollbar on the screen even there is no scroll 6368 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6369 false); 6370 // Post a message so that we'll keep them alive while we're not scrolling. 6371 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6372 .obtainMessage(AWAKEN_SCROLL_BARS), 6373 ViewConfiguration.getScrollDefaultDelay()); 6374 // return false to indicate that we can't pan out of the 6375 // view space 6376 return !done; 6377 } else { 6378 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6379 } 6380 break; 6381 } 6382 case MotionEvent.ACTION_UP: { 6383 if (!isFocused()) requestFocus(); 6384 // pass the touch events from UI thread to WebCore thread 6385 if (shouldForwardTouchEvent()) { 6386 TouchEventData ted = new TouchEventData(); 6387 ted.mIds = new int[1]; 6388 ted.mIds[0] = ev.getPointerId(0); 6389 ted.mAction = action; 6390 ted.mPoints = new Point[1]; 6391 ted.mPoints[0] = new Point(contentX, contentY); 6392 ted.mPointsInView = new Point[1]; 6393 ted.mPointsInView[0] = new Point(x, y); 6394 ted.mMetaState = ev.getMetaState(); 6395 ted.mReprocess = mDeferTouchProcess; 6396 ted.mNativeLayer = mScrollingLayer; 6397 ted.mNativeLayerRect.set(mScrollingLayerRect); 6398 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6399 mTouchEventQueue.preQueueTouchEventData(ted); 6400 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6401 } 6402 mLastTouchUpTime = eventTime; 6403 if (mSentAutoScrollMessage) { 6404 mAutoScrollX = mAutoScrollY = 0; 6405 } 6406 switch (mTouchMode) { 6407 case TOUCH_DOUBLE_TAP_MODE: // double tap 6408 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6409 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6410 if (inFullScreenMode() || mDeferTouchProcess) { 6411 TouchEventData ted = new TouchEventData(); 6412 ted.mIds = new int[1]; 6413 ted.mIds[0] = ev.getPointerId(0); 6414 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6415 ted.mPoints = new Point[1]; 6416 ted.mPoints[0] = new Point(contentX, contentY); 6417 ted.mPointsInView = new Point[1]; 6418 ted.mPointsInView[0] = new Point(x, y); 6419 ted.mMetaState = ev.getMetaState(); 6420 ted.mReprocess = mDeferTouchProcess; 6421 ted.mNativeLayer = nativeScrollableLayer( 6422 contentX, contentY, 6423 ted.mNativeLayerRect, null); 6424 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6425 mTouchEventQueue.preQueueTouchEventData(ted); 6426 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6427 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6428 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6429 mTouchMode = TOUCH_DONE_MODE; 6430 } 6431 break; 6432 case TOUCH_INIT_MODE: // tap 6433 case TOUCH_SHORTPRESS_START_MODE: 6434 case TOUCH_SHORTPRESS_MODE: 6435 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6436 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6437 if (mConfirmMove) { 6438 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6439 " WebCore's response for touch down."); 6440 if (mPreventDefault != PREVENT_DEFAULT_YES 6441 && (computeMaxScrollX() > 0 6442 || computeMaxScrollY() > 0)) { 6443 // If the user has performed a very quick touch 6444 // sequence it is possible that we may get here 6445 // before WebCore has had a chance to process the events. 6446 // In this case, any call to preventDefault in the 6447 // JS touch handler will not have been executed yet. 6448 // Hence we will see both the UI (now) and WebCore 6449 // (when context switches) handling the event, 6450 // regardless of whether the web developer actually 6451 // doeses preventDefault in their touch handler. This 6452 // is the nature of our asynchronous touch model. 6453 6454 // we will not rewrite drag code here, but we 6455 // will try fling if it applies. 6456 WebViewCore.reducePriority(); 6457 // to get better performance, pause updating the 6458 // picture 6459 WebViewCore.pauseUpdatePicture(mWebViewCore); 6460 // fall through to TOUCH_DRAG_MODE 6461 } else { 6462 // WebKit may consume the touch event and modify 6463 // DOM. drawContentPicture() will be called with 6464 // animateSroll as true for better performance. 6465 // Force redraw in high-quality. 6466 invalidate(); 6467 break; 6468 } 6469 } else { 6470 if (mSelectingText) { 6471 // tapping on selection or controls does nothing 6472 if (!nativeHitSelection(contentX, contentY)) { 6473 selectionDone(); 6474 } 6475 break; 6476 } 6477 // only trigger double tap if the WebView is 6478 // scalable 6479 if (mTouchMode == TOUCH_INIT_MODE 6480 && (canZoomIn() || canZoomOut())) { 6481 mPrivateHandler.sendEmptyMessageDelayed( 6482 RELEASE_SINGLE_TAP, ViewConfiguration 6483 .getDoubleTapTimeout()); 6484 } else { 6485 doShortPress(); 6486 } 6487 break; 6488 } 6489 case TOUCH_DRAG_MODE: 6490 case TOUCH_DRAG_LAYER_MODE: 6491 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6492 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6493 // if the user waits a while w/o moving before the 6494 // up, we don't want to do a fling 6495 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6496 if (mVelocityTracker == null) { 6497 Log.e(LOGTAG, "Got null mVelocityTracker when " 6498 + "mPreventDefault = " 6499 + mPreventDefault 6500 + " mDeferTouchProcess = " 6501 + mDeferTouchProcess); 6502 } else { 6503 mVelocityTracker.addMovement(ev); 6504 } 6505 // set to MOTIONLESS_IGNORE so that it won't keep 6506 // removing and sending message in 6507 // drawCoreAndCursorRing() 6508 mHeldMotionless = MOTIONLESS_IGNORE; 6509 doFling(); 6510 break; 6511 } else { 6512 if (mScroller.springBack(mScrollX, mScrollY, 0, 6513 computeMaxScrollX(), 0, 6514 computeMaxScrollY())) { 6515 invalidate(); 6516 } 6517 } 6518 // redraw in high-quality, as we're done dragging 6519 mHeldMotionless = MOTIONLESS_TRUE; 6520 invalidate(); 6521 // fall through 6522 case TOUCH_DRAG_START_MODE: 6523 // TOUCH_DRAG_START_MODE should not happen for the real 6524 // device as we almost certain will get a MOVE. But this 6525 // is possible on emulator. 6526 mLastVelocity = 0; 6527 WebViewCore.resumePriority(); 6528 if (!mSelectingText) { 6529 WebViewCore.resumeUpdatePicture(mWebViewCore); 6530 } 6531 break; 6532 } 6533 stopTouch(); 6534 break; 6535 } 6536 case MotionEvent.ACTION_CANCEL: { 6537 if (mTouchMode == TOUCH_DRAG_MODE) { 6538 mScroller.springBack(mScrollX, mScrollY, 0, 6539 computeMaxScrollX(), 0, computeMaxScrollY()); 6540 invalidate(); 6541 } 6542 cancelWebCoreTouchEvent(contentX, contentY, false); 6543 cancelTouch(); 6544 break; 6545 } 6546 } 6547 return true; 6548 } 6549 6550 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6551 TouchEventData ted = new TouchEventData(); 6552 ted.mAction = ev.getActionMasked(); 6553 final int count = ev.getPointerCount(); 6554 ted.mIds = new int[count]; 6555 ted.mPoints = new Point[count]; 6556 ted.mPointsInView = new Point[count]; 6557 for (int c = 0; c < count; c++) { 6558 ted.mIds[c] = ev.getPointerId(c); 6559 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6560 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6561 ted.mPoints[c] = new Point(x, y); 6562 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6563 } 6564 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6565 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6566 ted.mActionIndex = ev.getActionIndex(); 6567 } 6568 ted.mMetaState = ev.getMetaState(); 6569 ted.mReprocess = true; 6570 ted.mMotionEvent = MotionEvent.obtain(ev); 6571 ted.mSequence = sequence; 6572 mTouchEventQueue.preQueueTouchEventData(ted); 6573 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6574 cancelLongPress(); 6575 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6576 } 6577 6578 void handleMultiTouchInWebView(MotionEvent ev) { 6579 if (DebugFlags.WEB_VIEW) { 6580 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6581 + " mTouchMode=" + mTouchMode 6582 + " numPointers=" + ev.getPointerCount() 6583 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6584 } 6585 6586 final ScaleGestureDetector detector = 6587 mZoomManager.getMultiTouchGestureDetector(); 6588 6589 // A few apps use WebView but don't instantiate gesture detector. 6590 // We don't need to support multi touch for them. 6591 if (detector == null) return; 6592 6593 float x = ev.getX(); 6594 float y = ev.getY(); 6595 6596 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6597 detector.onTouchEvent(ev); 6598 6599 if (detector.isInProgress()) { 6600 if (DebugFlags.WEB_VIEW) { 6601 Log.v(LOGTAG, "detector is in progress"); 6602 } 6603 mLastTouchTime = ev.getEventTime(); 6604 x = detector.getFocusX(); 6605 y = detector.getFocusY(); 6606 6607 cancelLongPress(); 6608 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6609 if (!mZoomManager.supportsPanDuringZoom()) { 6610 return; 6611 } 6612 mTouchMode = TOUCH_DRAG_MODE; 6613 if (mVelocityTracker == null) { 6614 mVelocityTracker = VelocityTracker.obtain(); 6615 } 6616 } 6617 } 6618 6619 int action = ev.getActionMasked(); 6620 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6621 cancelTouch(); 6622 action = MotionEvent.ACTION_DOWN; 6623 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6624 // set mLastTouchX/Y to the remaining points for multi-touch. 6625 mLastTouchX = Math.round(x); 6626 mLastTouchY = Math.round(y); 6627 } else if (action == MotionEvent.ACTION_MOVE) { 6628 // negative x or y indicate it is on the edge, skip it. 6629 if (x < 0 || y < 0) { 6630 return; 6631 } 6632 } 6633 6634 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6635 } 6636 6637 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6638 if (shouldForwardTouchEvent()) { 6639 if (removeEvents) { 6640 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6641 } 6642 TouchEventData ted = new TouchEventData(); 6643 ted.mIds = new int[1]; 6644 ted.mIds[0] = 0; 6645 ted.mPoints = new Point[1]; 6646 ted.mPoints[0] = new Point(x, y); 6647 ted.mPointsInView = new Point[1]; 6648 int viewX = contentToViewX(x) - mScrollX; 6649 int viewY = contentToViewY(y) - mScrollY; 6650 ted.mPointsInView[0] = new Point(viewX, viewY); 6651 ted.mAction = MotionEvent.ACTION_CANCEL; 6652 ted.mNativeLayer = nativeScrollableLayer( 6653 x, y, ted.mNativeLayerRect, null); 6654 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6655 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6656 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6657 6658 if (removeEvents) { 6659 // Mark this after sending the message above; we should 6660 // be willing to ignore the cancel event that we just sent. 6661 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6662 } 6663 } 6664 } 6665 6666 private void startTouch(float x, float y, long eventTime) { 6667 // Remember where the motion event started 6668 mStartTouchX = mLastTouchX = Math.round(x); 6669 mStartTouchY = mLastTouchY = Math.round(y); 6670 mLastTouchTime = eventTime; 6671 mVelocityTracker = VelocityTracker.obtain(); 6672 mSnapScrollMode = SNAP_NONE; 6673 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6674 ViewConfiguration.getTapTimeout()); 6675 } 6676 6677 private void startDrag() { 6678 WebViewCore.reducePriority(); 6679 // to get better performance, pause updating the picture 6680 WebViewCore.pauseUpdatePicture(mWebViewCore); 6681 nativeSetIsScrolling(true); 6682 6683 if (!mDragFromTextInput) { 6684 nativeHideCursor(); 6685 } 6686 6687 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6688 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6689 mZoomManager.invokeZoomPicker(); 6690 } 6691 } 6692 6693 private void doDrag(int deltaX, int deltaY) { 6694 if ((deltaX | deltaY) != 0) { 6695 int oldX = mScrollX; 6696 int oldY = mScrollY; 6697 int rangeX = computeMaxScrollX(); 6698 int rangeY = computeMaxScrollY(); 6699 int overscrollDistance = mOverscrollDistance; 6700 6701 // Check for the original scrolling layer in case we change 6702 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6703 // reached the edge of a layer but mScrollingLayer will be non-zero 6704 // if we initiated the drag on a layer. 6705 if (mScrollingLayer != 0) { 6706 final int contentX = viewToContentDimension(deltaX); 6707 final int contentY = viewToContentDimension(deltaY); 6708 6709 // Check the scrolling bounds to see if we will actually do any 6710 // scrolling. The rectangle is in document coordinates. 6711 final int maxX = mScrollingLayerRect.right; 6712 final int maxY = mScrollingLayerRect.bottom; 6713 final int resultX = Math.max(0, 6714 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6715 final int resultY = Math.max(0, 6716 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6717 6718 if (resultX != mScrollingLayerRect.left || 6719 resultY != mScrollingLayerRect.top) { 6720 // In case we switched to dragging the page. 6721 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6722 deltaX = contentX; 6723 deltaY = contentY; 6724 oldX = mScrollingLayerRect.left; 6725 oldY = mScrollingLayerRect.top; 6726 rangeX = maxX; 6727 rangeY = maxY; 6728 } else { 6729 // Scroll the main page if we are not going to scroll the 6730 // layer. This does not reset mScrollingLayer in case the 6731 // user changes directions and the layer can scroll the 6732 // other way. 6733 mTouchMode = TOUCH_DRAG_MODE; 6734 } 6735 } 6736 6737 if (mOverScrollGlow != null) { 6738 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6739 } 6740 6741 overScrollBy(deltaX, deltaY, oldX, oldY, 6742 rangeX, rangeY, 6743 mOverscrollDistance, mOverscrollDistance, true); 6744 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6745 invalidate(); 6746 } 6747 } 6748 mZoomManager.keepZoomPickerVisible(); 6749 } 6750 6751 private void stopTouch() { 6752 if (mScroller.isFinished() && !mSelectingText 6753 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6754 WebViewCore.resumePriority(); 6755 WebViewCore.resumeUpdatePicture(mWebViewCore); 6756 nativeSetIsScrolling(false); 6757 } 6758 6759 // we also use mVelocityTracker == null to tell us that we are 6760 // not "moving around", so we can take the slower/prettier 6761 // mode in the drawing code 6762 if (mVelocityTracker != null) { 6763 mVelocityTracker.recycle(); 6764 mVelocityTracker = null; 6765 } 6766 6767 // Release any pulled glows 6768 if (mOverScrollGlow != null) { 6769 mOverScrollGlow.releaseAll(); 6770 } 6771 } 6772 6773 private void cancelTouch() { 6774 // we also use mVelocityTracker == null to tell us that we are 6775 // not "moving around", so we can take the slower/prettier 6776 // mode in the drawing code 6777 if (mVelocityTracker != null) { 6778 mVelocityTracker.recycle(); 6779 mVelocityTracker = null; 6780 } 6781 6782 if ((mTouchMode == TOUCH_DRAG_MODE 6783 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6784 WebViewCore.resumePriority(); 6785 WebViewCore.resumeUpdatePicture(mWebViewCore); 6786 nativeSetIsScrolling(false); 6787 } 6788 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6789 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6790 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6791 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6792 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 6793 removeTouchHighlight(); 6794 } 6795 mHeldMotionless = MOTIONLESS_TRUE; 6796 mTouchMode = TOUCH_DONE_MODE; 6797 nativeHideCursor(); 6798 } 6799 6800 @Override 6801 public boolean onGenericMotionEvent(MotionEvent event) { 6802 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6803 switch (event.getAction()) { 6804 case MotionEvent.ACTION_SCROLL: { 6805 final float vscroll; 6806 final float hscroll; 6807 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6808 vscroll = 0; 6809 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6810 } else { 6811 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6812 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6813 } 6814 if (hscroll != 0 || vscroll != 0) { 6815 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6816 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6817 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6818 return true; 6819 } 6820 } 6821 } 6822 } 6823 } 6824 return super.onGenericMotionEvent(event); 6825 } 6826 6827 private long mTrackballFirstTime = 0; 6828 private long mTrackballLastTime = 0; 6829 private float mTrackballRemainsX = 0.0f; 6830 private float mTrackballRemainsY = 0.0f; 6831 private int mTrackballXMove = 0; 6832 private int mTrackballYMove = 0; 6833 private boolean mSelectingText = false; 6834 private boolean mSelectionStarted = false; 6835 private boolean mExtendSelection = false; 6836 private boolean mDrawSelectionPointer = false; 6837 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6838 private static final int TRACKBALL_TIMEOUT = 200; 6839 private static final int TRACKBALL_WAIT = 100; 6840 private static final int TRACKBALL_SCALE = 400; 6841 private static final int TRACKBALL_SCROLL_COUNT = 5; 6842 private static final int TRACKBALL_MOVE_COUNT = 10; 6843 private static final int TRACKBALL_MULTIPLIER = 3; 6844 private static final int SELECT_CURSOR_OFFSET = 16; 6845 private static final int SELECT_SCROLL = 5; 6846 private int mSelectX = 0; 6847 private int mSelectY = 0; 6848 private boolean mFocusSizeChanged = false; 6849 private boolean mTrackballDown = false; 6850 private long mTrackballUpTime = 0; 6851 private long mLastCursorTime = 0; 6852 private Rect mLastCursorBounds; 6853 6854 // Set by default; BrowserActivity clears to interpret trackball data 6855 // directly for movement. Currently, the framework only passes 6856 // arrow key events, not trackball events, from one child to the next 6857 private boolean mMapTrackballToArrowKeys = true; 6858 6859 private DrawData mDelaySetPicture; 6860 private DrawData mLoadedPicture; 6861 6862 public void setMapTrackballToArrowKeys(boolean setMap) { 6863 checkThread(); 6864 mMapTrackballToArrowKeys = setMap; 6865 } 6866 6867 void resetTrackballTime() { 6868 mTrackballLastTime = 0; 6869 } 6870 6871 @Override 6872 public boolean onTrackballEvent(MotionEvent ev) { 6873 long time = ev.getEventTime(); 6874 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6875 if (ev.getY() > 0) pageDown(true); 6876 if (ev.getY() < 0) pageUp(true); 6877 return true; 6878 } 6879 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6880 if (mSelectingText) { 6881 return true; // discard press if copy in progress 6882 } 6883 mTrackballDown = true; 6884 if (mNativeClass == 0) { 6885 return false; 6886 } 6887 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6888 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6889 nativeSelectBestAt(mLastCursorBounds); 6890 } 6891 if (DebugFlags.WEB_VIEW) { 6892 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6893 + " time=" + time 6894 + " mLastCursorTime=" + mLastCursorTime); 6895 } 6896 if (isInTouchMode()) requestFocusFromTouch(); 6897 return false; // let common code in onKeyDown at it 6898 } 6899 if (ev.getAction() == MotionEvent.ACTION_UP) { 6900 // LONG_PRESS_CENTER is set in common onKeyDown 6901 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6902 mTrackballDown = false; 6903 mTrackballUpTime = time; 6904 if (mSelectingText) { 6905 if (mExtendSelection) { 6906 copySelection(); 6907 selectionDone(); 6908 } else { 6909 mExtendSelection = true; 6910 nativeSetExtendSelection(); 6911 invalidate(); // draw the i-beam instead of the arrow 6912 } 6913 return true; // discard press if copy in progress 6914 } 6915 if (DebugFlags.WEB_VIEW) { 6916 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6917 + " time=" + time 6918 ); 6919 } 6920 return false; // let common code in onKeyUp at it 6921 } 6922 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6923 AccessibilityManager.getInstance(mContext).isEnabled()) { 6924 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6925 return false; 6926 } 6927 if (mTrackballDown) { 6928 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6929 return true; // discard move if trackball is down 6930 } 6931 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6932 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6933 return true; 6934 } 6935 // TODO: alternatively we can do panning as touch does 6936 switchOutDrawHistory(); 6937 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6938 if (DebugFlags.WEB_VIEW) { 6939 Log.v(LOGTAG, "onTrackballEvent time=" 6940 + time + " last=" + mTrackballLastTime); 6941 } 6942 mTrackballFirstTime = time; 6943 mTrackballXMove = mTrackballYMove = 0; 6944 } 6945 mTrackballLastTime = time; 6946 if (DebugFlags.WEB_VIEW) { 6947 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6948 } 6949 mTrackballRemainsX += ev.getX(); 6950 mTrackballRemainsY += ev.getY(); 6951 doTrackball(time, ev.getMetaState()); 6952 return true; 6953 } 6954 6955 void moveSelection(float xRate, float yRate) { 6956 if (mNativeClass == 0) 6957 return; 6958 int width = getViewWidth(); 6959 int height = getViewHeight(); 6960 mSelectX += xRate; 6961 mSelectY += yRate; 6962 int maxX = width + mScrollX; 6963 int maxY = height + mScrollY; 6964 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6965 , mSelectX)); 6966 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6967 , mSelectY)); 6968 if (DebugFlags.WEB_VIEW) { 6969 Log.v(LOGTAG, "moveSelection" 6970 + " mSelectX=" + mSelectX 6971 + " mSelectY=" + mSelectY 6972 + " mScrollX=" + mScrollX 6973 + " mScrollY=" + mScrollY 6974 + " xRate=" + xRate 6975 + " yRate=" + yRate 6976 ); 6977 } 6978 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6979 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6980 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6981 : 0; 6982 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6983 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6984 : 0; 6985 pinScrollBy(scrollX, scrollY, true, 0); 6986 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6987 requestRectangleOnScreen(select); 6988 invalidate(); 6989 } 6990 6991 private int scaleTrackballX(float xRate, int width) { 6992 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6993 int nextXMove = xMove; 6994 if (xMove > 0) { 6995 if (xMove > mTrackballXMove) { 6996 xMove -= mTrackballXMove; 6997 } 6998 } else if (xMove < mTrackballXMove) { 6999 xMove -= mTrackballXMove; 7000 } 7001 mTrackballXMove = nextXMove; 7002 return xMove; 7003 } 7004 7005 private int scaleTrackballY(float yRate, int height) { 7006 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7007 int nextYMove = yMove; 7008 if (yMove > 0) { 7009 if (yMove > mTrackballYMove) { 7010 yMove -= mTrackballYMove; 7011 } 7012 } else if (yMove < mTrackballYMove) { 7013 yMove -= mTrackballYMove; 7014 } 7015 mTrackballYMove = nextYMove; 7016 return yMove; 7017 } 7018 7019 private int keyCodeToSoundsEffect(int keyCode) { 7020 switch(keyCode) { 7021 case KeyEvent.KEYCODE_DPAD_UP: 7022 return SoundEffectConstants.NAVIGATION_UP; 7023 case KeyEvent.KEYCODE_DPAD_RIGHT: 7024 return SoundEffectConstants.NAVIGATION_RIGHT; 7025 case KeyEvent.KEYCODE_DPAD_DOWN: 7026 return SoundEffectConstants.NAVIGATION_DOWN; 7027 case KeyEvent.KEYCODE_DPAD_LEFT: 7028 return SoundEffectConstants.NAVIGATION_LEFT; 7029 } 7030 throw new IllegalArgumentException("keyCode must be one of " + 7031 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7032 "KEYCODE_DPAD_LEFT}."); 7033 } 7034 7035 private void doTrackball(long time, int metaState) { 7036 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7037 if (elapsed == 0) { 7038 elapsed = TRACKBALL_TIMEOUT; 7039 } 7040 float xRate = mTrackballRemainsX * 1000 / elapsed; 7041 float yRate = mTrackballRemainsY * 1000 / elapsed; 7042 int viewWidth = getViewWidth(); 7043 int viewHeight = getViewHeight(); 7044 if (mSelectingText) { 7045 if (!mDrawSelectionPointer) { 7046 // The last selection was made by touch, disabling drawing the 7047 // selection pointer. Allow the trackball to adjust the 7048 // position of the touch control. 7049 mSelectX = contentToViewX(nativeSelectionX()); 7050 mSelectY = contentToViewY(nativeSelectionY()); 7051 mDrawSelectionPointer = mExtendSelection = true; 7052 nativeSetExtendSelection(); 7053 } 7054 moveSelection(scaleTrackballX(xRate, viewWidth), 7055 scaleTrackballY(yRate, viewHeight)); 7056 mTrackballRemainsX = mTrackballRemainsY = 0; 7057 return; 7058 } 7059 float ax = Math.abs(xRate); 7060 float ay = Math.abs(yRate); 7061 float maxA = Math.max(ax, ay); 7062 if (DebugFlags.WEB_VIEW) { 7063 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7064 + " xRate=" + xRate 7065 + " yRate=" + yRate 7066 + " mTrackballRemainsX=" + mTrackballRemainsX 7067 + " mTrackballRemainsY=" + mTrackballRemainsY); 7068 } 7069 int width = mContentWidth - viewWidth; 7070 int height = mContentHeight - viewHeight; 7071 if (width < 0) width = 0; 7072 if (height < 0) height = 0; 7073 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7074 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7075 maxA = Math.max(ax, ay); 7076 int count = Math.max(0, (int) maxA); 7077 int oldScrollX = mScrollX; 7078 int oldScrollY = mScrollY; 7079 if (count > 0) { 7080 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7081 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7082 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7083 KeyEvent.KEYCODE_DPAD_RIGHT; 7084 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7085 if (DebugFlags.WEB_VIEW) { 7086 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7087 + " count=" + count 7088 + " mTrackballRemainsX=" + mTrackballRemainsX 7089 + " mTrackballRemainsY=" + mTrackballRemainsY); 7090 } 7091 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7092 for (int i = 0; i < count; i++) { 7093 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7094 } 7095 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7096 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7097 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7098 } 7099 mTrackballRemainsX = mTrackballRemainsY = 0; 7100 } 7101 if (count >= TRACKBALL_SCROLL_COUNT) { 7102 int xMove = scaleTrackballX(xRate, width); 7103 int yMove = scaleTrackballY(yRate, height); 7104 if (DebugFlags.WEB_VIEW) { 7105 Log.v(LOGTAG, "doTrackball pinScrollBy" 7106 + " count=" + count 7107 + " xMove=" + xMove + " yMove=" + yMove 7108 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7109 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7110 ); 7111 } 7112 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7113 xMove = 0; 7114 } 7115 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7116 yMove = 0; 7117 } 7118 if (xMove != 0 || yMove != 0) { 7119 pinScrollBy(xMove, yMove, true, 0); 7120 } 7121 } 7122 } 7123 7124 /** 7125 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7126 * @return Maximum horizontal scroll position within real content 7127 */ 7128 int computeMaxScrollX() { 7129 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7130 } 7131 7132 /** 7133 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7134 * @return Maximum vertical scroll position within real content 7135 */ 7136 int computeMaxScrollY() { 7137 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7138 - getViewHeightWithTitle(), 0); 7139 } 7140 7141 boolean updateScrollCoordinates(int x, int y) { 7142 int oldX = mScrollX; 7143 int oldY = mScrollY; 7144 mScrollX = x; 7145 mScrollY = y; 7146 if (oldX != mScrollX || oldY != mScrollY) { 7147 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7148 return true; 7149 } else { 7150 return false; 7151 } 7152 } 7153 7154 public void flingScroll(int vx, int vy) { 7155 checkThread(); 7156 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7157 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7158 invalidate(); 7159 } 7160 7161 private void doFling() { 7162 if (mVelocityTracker == null) { 7163 return; 7164 } 7165 int maxX = computeMaxScrollX(); 7166 int maxY = computeMaxScrollY(); 7167 7168 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7169 int vx = (int) mVelocityTracker.getXVelocity(); 7170 int vy = (int) mVelocityTracker.getYVelocity(); 7171 7172 int scrollX = mScrollX; 7173 int scrollY = mScrollY; 7174 int overscrollDistance = mOverscrollDistance; 7175 int overflingDistance = mOverflingDistance; 7176 7177 // Use the layer's scroll data if applicable. 7178 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7179 scrollX = mScrollingLayerRect.left; 7180 scrollY = mScrollingLayerRect.top; 7181 maxX = mScrollingLayerRect.right; 7182 maxY = mScrollingLayerRect.bottom; 7183 // No overscrolling for layers. 7184 overscrollDistance = overflingDistance = 0; 7185 } 7186 7187 if (mSnapScrollMode != SNAP_NONE) { 7188 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7189 vy = 0; 7190 } else { 7191 vx = 0; 7192 } 7193 } 7194 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7195 WebViewCore.resumePriority(); 7196 if (!mSelectingText) { 7197 WebViewCore.resumeUpdatePicture(mWebViewCore); 7198 } 7199 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7200 invalidate(); 7201 } 7202 return; 7203 } 7204 float currentVelocity = mScroller.getCurrVelocity(); 7205 float velocity = (float) Math.hypot(vx, vy); 7206 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7207 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7208 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7209 - Math.atan2(vy, vx))); 7210 final float circle = (float) (Math.PI) * 2.0f; 7211 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7212 vx += currentVelocity * mLastVelX / mLastVelocity; 7213 vy += currentVelocity * mLastVelY / mLastVelocity; 7214 velocity = (float) Math.hypot(vx, vy); 7215 if (DebugFlags.WEB_VIEW) { 7216 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7217 } 7218 } else if (DebugFlags.WEB_VIEW) { 7219 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7220 } 7221 } else if (DebugFlags.WEB_VIEW) { 7222 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7223 + " current=" + currentVelocity 7224 + " vx=" + vx + " vy=" + vy 7225 + " maxX=" + maxX + " maxY=" + maxY 7226 + " scrollX=" + scrollX + " scrollY=" + scrollY 7227 + " layer=" + mScrollingLayer); 7228 } 7229 7230 // Allow sloppy flings without overscrolling at the edges. 7231 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7232 vx = 0; 7233 } 7234 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7235 vy = 0; 7236 } 7237 7238 if (overscrollDistance < overflingDistance) { 7239 if ((vx > 0 && scrollX == -overscrollDistance) || 7240 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7241 vx = 0; 7242 } 7243 if ((vy > 0 && scrollY == -overscrollDistance) || 7244 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7245 vy = 0; 7246 } 7247 } 7248 7249 mLastVelX = vx; 7250 mLastVelY = vy; 7251 mLastVelocity = velocity; 7252 7253 // no horizontal overscroll if the content just fits 7254 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7255 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7256 // Duration is calculated based on velocity. With range boundaries and overscroll 7257 // we may not know how long the final animation will take. (Hence the deprecation 7258 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7259 // resumes during this effect we will take a performance hit. See computeScroll; 7260 // we resume webcore there when the animation is finished. 7261 final int time = mScroller.getDuration(); 7262 7263 // Suppress scrollbars for layer scrolling. 7264 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7265 awakenScrollBars(time); 7266 } 7267 7268 invalidate(); 7269 } 7270 7271 /** 7272 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7273 * in charge of installing this view to the view hierarchy. This view will 7274 * become visible when the user starts scrolling via touch and fade away if 7275 * the user does not interact with it. 7276 * <p/> 7277 * API version 3 introduces a built-in zoom mechanism that is shown 7278 * automatically by the MapView. This is the preferred approach for 7279 * showing the zoom UI. 7280 * 7281 * @deprecated The built-in zoom mechanism is preferred, see 7282 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7283 */ 7284 @Deprecated 7285 public View getZoomControls() { 7286 checkThread(); 7287 if (!getSettings().supportZoom()) { 7288 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7289 return null; 7290 } 7291 return mZoomManager.getExternalZoomPicker(); 7292 } 7293 7294 void dismissZoomControl() { 7295 mZoomManager.dismissZoomPicker(); 7296 } 7297 7298 float getDefaultZoomScale() { 7299 return mZoomManager.getDefaultScale(); 7300 } 7301 7302 /** 7303 * Return the overview scale of the WebView 7304 * @return The overview scale. 7305 */ 7306 float getZoomOverviewScale() { 7307 return mZoomManager.getZoomOverviewScale(); 7308 } 7309 7310 /** 7311 * @return TRUE if the WebView can be zoomed in. 7312 */ 7313 public boolean canZoomIn() { 7314 checkThread(); 7315 return mZoomManager.canZoomIn(); 7316 } 7317 7318 /** 7319 * @return TRUE if the WebView can be zoomed out. 7320 */ 7321 public boolean canZoomOut() { 7322 checkThread(); 7323 return mZoomManager.canZoomOut(); 7324 } 7325 7326 /** 7327 * Perform zoom in in the webview 7328 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7329 */ 7330 public boolean zoomIn() { 7331 checkThread(); 7332 return mZoomManager.zoomIn(); 7333 } 7334 7335 /** 7336 * Perform zoom out in the webview 7337 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7338 */ 7339 public boolean zoomOut() { 7340 checkThread(); 7341 return mZoomManager.zoomOut(); 7342 } 7343 7344 /** 7345 * This selects the best clickable target at mLastTouchX and mLastTouchY 7346 * and calls showCursorTimed on the native side 7347 */ 7348 private void updateSelection() { 7349 if (mNativeClass == 0) { 7350 return; 7351 } 7352 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7353 // mLastTouchX and mLastTouchY are the point in the current viewport 7354 int contentX = viewToContentX(mLastTouchX + mScrollX); 7355 int contentY = viewToContentY(mLastTouchY + mScrollY); 7356 int slop = viewToContentDimension(mNavSlop); 7357 Rect rect = new Rect(contentX - slop, contentY - slop, 7358 contentX + slop, contentY + slop); 7359 nativeSelectBestAt(rect); 7360 mInitialHitTestResult = hitTestResult(null); 7361 } 7362 7363 /** 7364 * Scroll the focused text field to match the WebTextView 7365 * @param xPercent New x position of the WebTextView from 0 to 1. 7366 */ 7367 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7368 if (!inEditingMode() || mWebViewCore == null) { 7369 return; 7370 } 7371 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7372 new Float(xPercent)); 7373 } 7374 7375 /** 7376 * Scroll the focused textarea vertically to match the WebTextView 7377 * @param y New y position of the WebTextView in view coordinates 7378 */ 7379 /* package */ void scrollFocusedTextInputY(int y) { 7380 if (!inEditingMode() || mWebViewCore == null) { 7381 return; 7382 } 7383 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7384 } 7385 7386 /** 7387 * Set our starting point and time for a drag from the WebTextView. 7388 */ 7389 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7390 if (!inEditingMode()) { 7391 return; 7392 } 7393 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7394 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7395 mLastTouchTime = eventTime; 7396 if (!mScroller.isFinished()) { 7397 abortAnimation(); 7398 } 7399 mSnapScrollMode = SNAP_NONE; 7400 mVelocityTracker = VelocityTracker.obtain(); 7401 mTouchMode = TOUCH_DRAG_START_MODE; 7402 } 7403 7404 /** 7405 * Given a motion event from the WebTextView, set its location to our 7406 * coordinates, and handle the event. 7407 */ 7408 /*package*/ boolean textFieldDrag(MotionEvent event) { 7409 if (!inEditingMode()) { 7410 return false; 7411 } 7412 mDragFromTextInput = true; 7413 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 7414 (float) (mWebTextView.getTop() - mScrollY)); 7415 boolean result = onTouchEvent(event); 7416 mDragFromTextInput = false; 7417 return result; 7418 } 7419 7420 /** 7421 * Due a touch up from a WebTextView. This will be handled by webkit to 7422 * change the selection. 7423 * @param event MotionEvent in the WebTextView's coordinates. 7424 */ 7425 /*package*/ void touchUpOnTextField(MotionEvent event) { 7426 if (!inEditingMode()) { 7427 return; 7428 } 7429 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7430 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7431 int slop = viewToContentDimension(mNavSlop); 7432 nativeMotionUp(x, y, slop); 7433 } 7434 7435 /** 7436 * Called when pressing the center key or trackball on a textfield. 7437 */ 7438 /*package*/ void centerKeyPressOnTextField() { 7439 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7440 nativeCursorNodePointer()); 7441 } 7442 7443 private void doShortPress() { 7444 if (mNativeClass == 0) { 7445 return; 7446 } 7447 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7448 return; 7449 } 7450 mTouchMode = TOUCH_DONE_MODE; 7451 updateSelection(); 7452 switchOutDrawHistory(); 7453 // mLastTouchX and mLastTouchY are the point in the current viewport 7454 int contentX = viewToContentX(mLastTouchX + mScrollX); 7455 int contentY = viewToContentY(mLastTouchY + mScrollY); 7456 int slop = viewToContentDimension(mNavSlop); 7457 if (USE_WEBKIT_RINGS && !mTouchHighlightRegion.isEmpty()) { 7458 // set mTouchHighlightRequested to 0 to cause an immediate 7459 // drawing of the touch rings 7460 mTouchHighlightRequested = 0; 7461 invalidate(mTouchHighlightRegion.getBounds()); 7462 mPrivateHandler.postDelayed(new Runnable() { 7463 @Override 7464 public void run() { 7465 removeTouchHighlight(); 7466 } 7467 }, ViewConfiguration.getPressedStateDuration()); 7468 } 7469 if (getSettings().supportTouchOnly()) { 7470 removeTouchHighlight(); 7471 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7472 // use "0" as generation id to inform WebKit to use the same x/y as 7473 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7474 touchUpData.mMoveGeneration = 0; 7475 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7476 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7477 WebViewCore.MotionUpData motionUpData = new WebViewCore 7478 .MotionUpData(); 7479 motionUpData.mFrame = nativeCacheHitFramePointer(); 7480 motionUpData.mNode = nativeCacheHitNodePointer(); 7481 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7482 motionUpData.mX = contentX; 7483 motionUpData.mY = contentY; 7484 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7485 motionUpData); 7486 } else { 7487 doMotionUp(contentX, contentY); 7488 } 7489 } 7490 7491 private void doMotionUp(int contentX, int contentY) { 7492 int slop = viewToContentDimension(mNavSlop); 7493 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7494 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7495 } 7496 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7497 playSoundEffect(SoundEffectConstants.CLICK); 7498 } 7499 } 7500 7501 void sendPluginDrawMsg() { 7502 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7503 } 7504 7505 /** 7506 * Returns plugin bounds if x/y in content coordinates corresponds to a 7507 * plugin. Otherwise a NULL rectangle is returned. 7508 */ 7509 Rect getPluginBounds(int x, int y) { 7510 int slop = viewToContentDimension(mNavSlop); 7511 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7512 return nativeCacheHitNodeBounds(); 7513 } else { 7514 return null; 7515 } 7516 } 7517 7518 /* 7519 * Return true if the rect (e.g. plugin) is fully visible and maximized 7520 * inside the WebView. 7521 */ 7522 boolean isRectFitOnScreen(Rect rect) { 7523 final int rectWidth = rect.width(); 7524 final int rectHeight = rect.height(); 7525 final int viewWidth = getViewWidth(); 7526 final int viewHeight = getViewHeightWithTitle(); 7527 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7528 scale = mZoomManager.computeScaleWithLimits(scale); 7529 return !mZoomManager.willScaleTriggerZoom(scale) 7530 && contentToViewX(rect.left) >= mScrollX 7531 && contentToViewX(rect.right) <= mScrollX + viewWidth 7532 && contentToViewY(rect.top) >= mScrollY 7533 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7534 } 7535 7536 /* 7537 * Maximize and center the rectangle, specified in the document coordinate 7538 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7539 * animated scroll to center it. If the zoom needs to be changed, find the 7540 * zoom center and do a smooth zoom transition. The rect is in document 7541 * coordinates 7542 */ 7543 void centerFitRect(Rect rect) { 7544 final int rectWidth = rect.width(); 7545 final int rectHeight = rect.height(); 7546 final int viewWidth = getViewWidth(); 7547 final int viewHeight = getViewHeightWithTitle(); 7548 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7549 / rectHeight); 7550 scale = mZoomManager.computeScaleWithLimits(scale); 7551 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7552 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7553 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7554 true, 0); 7555 } else { 7556 float actualScale = mZoomManager.getScale(); 7557 float oldScreenX = rect.left * actualScale - mScrollX; 7558 float rectViewX = rect.left * scale; 7559 float rectViewWidth = rectWidth * scale; 7560 float newMaxWidth = mContentWidth * scale; 7561 float newScreenX = (viewWidth - rectViewWidth) / 2; 7562 // pin the newX to the WebView 7563 if (newScreenX > rectViewX) { 7564 newScreenX = rectViewX; 7565 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7566 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7567 } 7568 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7569 / (scale - actualScale); 7570 float oldScreenY = rect.top * actualScale + getTitleHeight() 7571 - mScrollY; 7572 float rectViewY = rect.top * scale + getTitleHeight(); 7573 float rectViewHeight = rectHeight * scale; 7574 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7575 float newScreenY = (viewHeight - rectViewHeight) / 2; 7576 // pin the newY to the WebView 7577 if (newScreenY > rectViewY) { 7578 newScreenY = rectViewY; 7579 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7580 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7581 } 7582 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7583 / (scale - actualScale); 7584 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7585 mZoomManager.startZoomAnimation(scale, false); 7586 } 7587 } 7588 7589 // Called by JNI to handle a touch on a node representing an email address, 7590 // address, or phone number 7591 private void overrideLoading(String url) { 7592 mCallbackProxy.uiOverrideUrlLoading(url); 7593 } 7594 7595 @Override 7596 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7597 // FIXME: If a subwindow is showing find, and the user touches the 7598 // background window, it can steal focus. 7599 if (mFindIsUp) return false; 7600 boolean result = false; 7601 if (inEditingMode()) { 7602 result = mWebTextView.requestFocus(direction, 7603 previouslyFocusedRect); 7604 } else { 7605 result = super.requestFocus(direction, previouslyFocusedRect); 7606 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7607 // For cases such as GMail, where we gain focus from a direction, 7608 // we want to move to the first available link. 7609 // FIXME: If there are no visible links, we may not want to 7610 int fakeKeyDirection = 0; 7611 switch(direction) { 7612 case View.FOCUS_UP: 7613 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7614 break; 7615 case View.FOCUS_DOWN: 7616 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7617 break; 7618 case View.FOCUS_LEFT: 7619 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7620 break; 7621 case View.FOCUS_RIGHT: 7622 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7623 break; 7624 default: 7625 return result; 7626 } 7627 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7628 navHandledKey(fakeKeyDirection, 1, true, 0); 7629 } 7630 } 7631 } 7632 return result; 7633 } 7634 7635 @Override 7636 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7637 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7638 7639 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7640 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7641 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7642 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7643 7644 int measuredHeight = heightSize; 7645 int measuredWidth = widthSize; 7646 7647 // Grab the content size from WebViewCore. 7648 int contentHeight = contentToViewDimension(mContentHeight); 7649 int contentWidth = contentToViewDimension(mContentWidth); 7650 7651// Log.d(LOGTAG, "------- measure " + heightMode); 7652 7653 if (heightMode != MeasureSpec.EXACTLY) { 7654 mHeightCanMeasure = true; 7655 measuredHeight = contentHeight; 7656 if (heightMode == MeasureSpec.AT_MOST) { 7657 // If we are larger than the AT_MOST height, then our height can 7658 // no longer be measured and we should scroll internally. 7659 if (measuredHeight > heightSize) { 7660 measuredHeight = heightSize; 7661 mHeightCanMeasure = false; 7662 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7663 } 7664 } 7665 } else { 7666 mHeightCanMeasure = false; 7667 } 7668 if (mNativeClass != 0) { 7669 nativeSetHeightCanMeasure(mHeightCanMeasure); 7670 } 7671 // For the width, always use the given size unless unspecified. 7672 if (widthMode == MeasureSpec.UNSPECIFIED) { 7673 mWidthCanMeasure = true; 7674 measuredWidth = contentWidth; 7675 } else { 7676 if (measuredWidth < contentWidth) { 7677 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7678 } 7679 mWidthCanMeasure = false; 7680 } 7681 7682 synchronized (this) { 7683 setMeasuredDimension(measuredWidth, measuredHeight); 7684 } 7685 } 7686 7687 @Override 7688 public boolean requestChildRectangleOnScreen(View child, 7689 Rect rect, 7690 boolean immediate) { 7691 if (mNativeClass == 0) { 7692 return false; 7693 } 7694 // don't scroll while in zoom animation. When it is done, we will adjust 7695 // the necessary components (e.g., WebTextView if it is in editing mode) 7696 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7697 return false; 7698 } 7699 7700 rect.offset(child.getLeft() - child.getScrollX(), 7701 child.getTop() - child.getScrollY()); 7702 7703 Rect content = new Rect(viewToContentX(mScrollX), 7704 viewToContentY(mScrollY), 7705 viewToContentX(mScrollX + getWidth() 7706 - getVerticalScrollbarWidth()), 7707 viewToContentY(mScrollY + getViewHeightWithTitle())); 7708 content = nativeSubtractLayers(content); 7709 int screenTop = contentToViewY(content.top); 7710 int screenBottom = contentToViewY(content.bottom); 7711 int height = screenBottom - screenTop; 7712 int scrollYDelta = 0; 7713 7714 if (rect.bottom > screenBottom) { 7715 int oneThirdOfScreenHeight = height / 3; 7716 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7717 // If the rectangle is too tall to fit in the bottom two thirds 7718 // of the screen, place it at the top. 7719 scrollYDelta = rect.top - screenTop; 7720 } else { 7721 // If the rectangle will still fit on screen, we want its 7722 // top to be in the top third of the screen. 7723 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7724 } 7725 } else if (rect.top < screenTop) { 7726 scrollYDelta = rect.top - screenTop; 7727 } 7728 7729 int screenLeft = contentToViewX(content.left); 7730 int screenRight = contentToViewX(content.right); 7731 int width = screenRight - screenLeft; 7732 int scrollXDelta = 0; 7733 7734 if (rect.right > screenRight && rect.left > screenLeft) { 7735 if (rect.width() > width) { 7736 scrollXDelta += (rect.left - screenLeft); 7737 } else { 7738 scrollXDelta += (rect.right - screenRight); 7739 } 7740 } else if (rect.left < screenLeft) { 7741 scrollXDelta -= (screenLeft - rect.left); 7742 } 7743 7744 if ((scrollYDelta | scrollXDelta) != 0) { 7745 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7746 } 7747 7748 return false; 7749 } 7750 7751 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7752 String replace, int newStart, int newEnd) { 7753 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7754 arg.mReplace = replace; 7755 arg.mNewStart = newStart; 7756 arg.mNewEnd = newEnd; 7757 mTextGeneration++; 7758 arg.mTextGeneration = mTextGeneration; 7759 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7760 } 7761 7762 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7763 // check if mWebViewCore has been destroyed 7764 if (mWebViewCore == null) { 7765 return; 7766 } 7767 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7768 arg.mEvent = event; 7769 arg.mCurrentText = currentText; 7770 // Increase our text generation number, and pass it to webcore thread 7771 mTextGeneration++; 7772 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7773 // WebKit's document state is not saved until about to leave the page. 7774 // To make sure the host application, like Browser, has the up to date 7775 // document state when it goes to background, we force to save the 7776 // document state. 7777 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7778 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7779 cursorData(), 1000); 7780 } 7781 7782 /** 7783 * @hide 7784 */ 7785 public synchronized WebViewCore getWebViewCore() { 7786 return mWebViewCore; 7787 } 7788 7789 /** 7790 * Used only by TouchEventQueue to store pending touch events. 7791 */ 7792 private static class QueuedTouch { 7793 long mSequence; 7794 MotionEvent mEvent; // Optional 7795 TouchEventData mTed; // Optional 7796 7797 QueuedTouch mNext; 7798 7799 public QueuedTouch set(TouchEventData ted) { 7800 mSequence = ted.mSequence; 7801 mTed = ted; 7802 mEvent = null; 7803 mNext = null; 7804 return this; 7805 } 7806 7807 public QueuedTouch set(MotionEvent ev, long sequence) { 7808 mEvent = MotionEvent.obtain(ev); 7809 mSequence = sequence; 7810 mTed = null; 7811 mNext = null; 7812 return this; 7813 } 7814 7815 public QueuedTouch add(QueuedTouch other) { 7816 if (other.mSequence < mSequence) { 7817 other.mNext = this; 7818 return other; 7819 } 7820 7821 QueuedTouch insertAt = this; 7822 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7823 insertAt = insertAt.mNext; 7824 } 7825 other.mNext = insertAt.mNext; 7826 insertAt.mNext = other; 7827 return this; 7828 } 7829 } 7830 7831 /** 7832 * WebView handles touch events asynchronously since some events must be passed to WebKit 7833 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7834 * of which path they take to ensure that no events are ever processed out of order 7835 * by WebView. 7836 */ 7837 private class TouchEventQueue { 7838 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7839 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7840 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7841 7842 // Events waiting to be processed. 7843 private QueuedTouch mTouchEventQueue; 7844 7845 // Known events that are waiting on a response before being enqueued. 7846 private QueuedTouch mPreQueue; 7847 7848 // Pool of QueuedTouch objects saved for later use. 7849 private QueuedTouch mQueuedTouchRecycleBin; 7850 private int mQueuedTouchRecycleCount; 7851 7852 private long mLastEventTime = Long.MAX_VALUE; 7853 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7854 7855 // milliseconds until we abandon hope of getting all of a previous gesture 7856 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7857 7858 private QueuedTouch obtainQueuedTouch() { 7859 if (mQueuedTouchRecycleBin != null) { 7860 QueuedTouch result = mQueuedTouchRecycleBin; 7861 mQueuedTouchRecycleBin = result.mNext; 7862 mQueuedTouchRecycleCount--; 7863 return result; 7864 } 7865 return new QueuedTouch(); 7866 } 7867 7868 /** 7869 * Allow events with any currently missing sequence numbers to be skipped in processing. 7870 */ 7871 public void ignoreCurrentlyMissingEvents() { 7872 mIgnoreUntilSequence = mNextTouchSequence; 7873 7874 // Run any events we have available and complete, pre-queued or otherwise. 7875 runQueuedAndPreQueuedEvents(); 7876 } 7877 7878 private void runQueuedAndPreQueuedEvents() { 7879 QueuedTouch qd = mPreQueue; 7880 boolean fromPreQueue = true; 7881 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7882 handleQueuedTouch(qd); 7883 QueuedTouch recycleMe = qd; 7884 if (fromPreQueue) { 7885 mPreQueue = qd.mNext; 7886 } else { 7887 mTouchEventQueue = qd.mNext; 7888 } 7889 recycleQueuedTouch(recycleMe); 7890 mLastHandledTouchSequence++; 7891 7892 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7893 long nextQueued = mTouchEventQueue != null ? 7894 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7895 fromPreQueue = nextPre < nextQueued; 7896 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7897 } 7898 } 7899 7900 /** 7901 * Add a TouchEventData to the pre-queue. 7902 * 7903 * An event in the pre-queue is an event that we know about that 7904 * has been sent to webkit, but that we haven't received back and 7905 * enqueued into the normal touch queue yet. If webkit ever times 7906 * out and we need to ignore currently missing events, we'll run 7907 * events from the pre-queue to patch the holes. 7908 * 7909 * @param ted TouchEventData to pre-queue 7910 */ 7911 public void preQueueTouchEventData(TouchEventData ted) { 7912 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7913 if (mPreQueue == null) { 7914 mPreQueue = newTouch; 7915 } else { 7916 QueuedTouch insertionPoint = mPreQueue; 7917 while (insertionPoint.mNext != null && 7918 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7919 insertionPoint = insertionPoint.mNext; 7920 } 7921 newTouch.mNext = insertionPoint.mNext; 7922 insertionPoint.mNext = newTouch; 7923 } 7924 } 7925 7926 private void recycleQueuedTouch(QueuedTouch qd) { 7927 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7928 qd.mNext = mQueuedTouchRecycleBin; 7929 mQueuedTouchRecycleBin = qd; 7930 mQueuedTouchRecycleCount++; 7931 } 7932 } 7933 7934 /** 7935 * Reset the touch event queue. This will dump any pending events 7936 * and reset the sequence numbering. 7937 */ 7938 public void reset() { 7939 mNextTouchSequence = Long.MIN_VALUE + 1; 7940 mLastHandledTouchSequence = Long.MIN_VALUE; 7941 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7942 while (mTouchEventQueue != null) { 7943 QueuedTouch recycleMe = mTouchEventQueue; 7944 mTouchEventQueue = mTouchEventQueue.mNext; 7945 recycleQueuedTouch(recycleMe); 7946 } 7947 while (mPreQueue != null) { 7948 QueuedTouch recycleMe = mPreQueue; 7949 mPreQueue = mPreQueue.mNext; 7950 recycleQueuedTouch(recycleMe); 7951 } 7952 } 7953 7954 /** 7955 * Return the next valid sequence number for tagging incoming touch events. 7956 * @return The next touch event sequence number 7957 */ 7958 public long nextTouchSequence() { 7959 return mNextTouchSequence++; 7960 } 7961 7962 /** 7963 * Enqueue a touch event in the form of TouchEventData. 7964 * The sequence number will be read from the mSequence field of the argument. 7965 * 7966 * If the touch event's sequence number is the next in line to be processed, it will 7967 * be handled before this method returns. Any subsequent events that have already 7968 * been queued will also be processed in their proper order. 7969 * 7970 * @param ted Touch data to be processed in order. 7971 * @return true if the event was processed before returning, false if it was just enqueued. 7972 */ 7973 public boolean enqueueTouchEvent(TouchEventData ted) { 7974 // Remove from the pre-queue if present 7975 QueuedTouch preQueue = mPreQueue; 7976 if (preQueue != null) { 7977 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7978 // if it was present in the pre-queue, and removed from the pre-queue itself. 7979 if (preQueue.mSequence == ted.mSequence) { 7980 mPreQueue = preQueue.mNext; 7981 } else { 7982 QueuedTouch prev = preQueue; 7983 preQueue = null; 7984 while (prev.mNext != null) { 7985 if (prev.mNext.mSequence == ted.mSequence) { 7986 preQueue = prev.mNext; 7987 prev.mNext = preQueue.mNext; 7988 break; 7989 } else { 7990 prev = prev.mNext; 7991 } 7992 } 7993 } 7994 } 7995 7996 if (ted.mSequence < mLastHandledTouchSequence) { 7997 // Stale event and we already moved on; drop it. (Should not be common.) 7998 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7999 " received from webcore; ignoring"); 8000 return false; 8001 } 8002 8003 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8004 return false; 8005 } 8006 8007 // dropStaleGestures above might have fast-forwarded us to 8008 // an event we have already. 8009 runNextQueuedEvents(); 8010 8011 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8012 if (preQueue != null) { 8013 recycleQueuedTouch(preQueue); 8014 preQueue = null; 8015 } 8016 handleQueuedTouchEventData(ted); 8017 8018 mLastHandledTouchSequence++; 8019 8020 // Do we have any more? Run them if so. 8021 runNextQueuedEvents(); 8022 } else { 8023 // Reuse the pre-queued object if we had it. 8024 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8025 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8026 } 8027 return true; 8028 } 8029 8030 /** 8031 * Enqueue a touch event in the form of a MotionEvent from the framework. 8032 * 8033 * If the touch event's sequence number is the next in line to be processed, it will 8034 * be handled before this method returns. Any subsequent events that have already 8035 * been queued will also be processed in their proper order. 8036 * 8037 * @param ev MotionEvent to be processed in order 8038 */ 8039 public void enqueueTouchEvent(MotionEvent ev) { 8040 final long sequence = nextTouchSequence(); 8041 8042 if (dropStaleGestures(ev, sequence)) { 8043 return; 8044 } 8045 8046 // dropStaleGestures above might have fast-forwarded us to 8047 // an event we have already. 8048 runNextQueuedEvents(); 8049 8050 if (mLastHandledTouchSequence + 1 == sequence) { 8051 handleQueuedMotionEvent(ev); 8052 8053 mLastHandledTouchSequence++; 8054 8055 // Do we have any more? Run them if so. 8056 runNextQueuedEvents(); 8057 } else { 8058 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8059 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8060 } 8061 } 8062 8063 private void runNextQueuedEvents() { 8064 QueuedTouch qd = mTouchEventQueue; 8065 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8066 handleQueuedTouch(qd); 8067 QueuedTouch recycleMe = qd; 8068 qd = qd.mNext; 8069 recycleQueuedTouch(recycleMe); 8070 mLastHandledTouchSequence++; 8071 } 8072 mTouchEventQueue = qd; 8073 } 8074 8075 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8076 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8077 // This is to make sure that we don't attempt to process a tap 8078 // or long press when webkit takes too long to get back to us. 8079 // The movement will be properly confirmed when we process the 8080 // enqueued event later. 8081 final int dx = Math.round(ev.getX()) - mLastTouchX; 8082 final int dy = Math.round(ev.getY()) - mLastTouchY; 8083 if (dx * dx + dy * dy > mTouchSlopSquare) { 8084 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8085 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8086 } 8087 } 8088 8089 if (mTouchEventQueue == null) { 8090 return sequence <= mLastHandledTouchSequence; 8091 } 8092 8093 // If we have a new down event and it's been a while since the last event 8094 // we saw, catch up as best we can and keep going. 8095 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8096 long eventTime = ev.getEventTime(); 8097 long lastHandledEventTime = mLastEventTime; 8098 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8099 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8100 "Catching up."); 8101 runQueuedAndPreQueuedEvents(); 8102 8103 // Drop leftovers that we truly don't have. 8104 QueuedTouch qd = mTouchEventQueue; 8105 while (qd != null && qd.mSequence < sequence) { 8106 QueuedTouch recycleMe = qd; 8107 qd = qd.mNext; 8108 recycleQueuedTouch(recycleMe); 8109 } 8110 mTouchEventQueue = qd; 8111 mLastHandledTouchSequence = sequence - 1; 8112 } 8113 } 8114 8115 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8116 QueuedTouch qd = mTouchEventQueue; 8117 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8118 QueuedTouch recycleMe = qd; 8119 qd = qd.mNext; 8120 recycleQueuedTouch(recycleMe); 8121 } 8122 mTouchEventQueue = qd; 8123 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8124 } 8125 8126 if (mPreQueue != null) { 8127 // Drop stale prequeued events 8128 QueuedTouch qd = mPreQueue; 8129 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8130 QueuedTouch recycleMe = qd; 8131 qd = qd.mNext; 8132 recycleQueuedTouch(recycleMe); 8133 } 8134 mPreQueue = qd; 8135 } 8136 8137 return sequence <= mLastHandledTouchSequence; 8138 } 8139 8140 private void handleQueuedTouch(QueuedTouch qt) { 8141 if (qt.mTed != null) { 8142 handleQueuedTouchEventData(qt.mTed); 8143 } else { 8144 handleQueuedMotionEvent(qt.mEvent); 8145 qt.mEvent.recycle(); 8146 } 8147 } 8148 8149 private void handleQueuedMotionEvent(MotionEvent ev) { 8150 mLastEventTime = ev.getEventTime(); 8151 int action = ev.getActionMasked(); 8152 if (ev.getPointerCount() > 1) { // Multi-touch 8153 handleMultiTouchInWebView(ev); 8154 } else { 8155 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8156 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8157 // ScaleGestureDetector needs a consistent event stream to operate properly. 8158 // It won't take any action with fewer than two pointers, but it needs to 8159 // update internal bookkeeping state. 8160 detector.onTouchEvent(ev); 8161 } 8162 8163 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8164 } 8165 } 8166 8167 private void handleQueuedTouchEventData(TouchEventData ted) { 8168 if (ted.mMotionEvent != null) { 8169 mLastEventTime = ted.mMotionEvent.getEventTime(); 8170 } 8171 if (!ted.mReprocess) { 8172 if (ted.mAction == MotionEvent.ACTION_DOWN 8173 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8174 // if prevent default is called from WebCore, UI 8175 // will not handle the rest of the touch events any 8176 // more. 8177 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8178 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8179 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8180 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8181 // the return for the first ACTION_MOVE will decide 8182 // whether UI will handle touch or not. Currently no 8183 // support for alternating prevent default 8184 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8185 : PREVENT_DEFAULT_NO; 8186 } 8187 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8188 mTouchHighlightRegion.setEmpty(); 8189 } 8190 } else { 8191 if (ted.mPoints.length > 1) { // multi-touch 8192 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8193 mPreventDefault = PREVENT_DEFAULT_NO; 8194 handleMultiTouchInWebView(ted.mMotionEvent); 8195 } else { 8196 mPreventDefault = PREVENT_DEFAULT_YES; 8197 } 8198 return; 8199 } 8200 8201 // prevent default is not called in WebCore, so the 8202 // message needs to be reprocessed in UI 8203 if (!ted.mNativeResult) { 8204 // Following is for single touch. 8205 switch (ted.mAction) { 8206 case MotionEvent.ACTION_DOWN: 8207 mLastDeferTouchX = ted.mPointsInView[0].x; 8208 mLastDeferTouchY = ted.mPointsInView[0].y; 8209 mDeferTouchMode = TOUCH_INIT_MODE; 8210 break; 8211 case MotionEvent.ACTION_MOVE: { 8212 // no snapping in defer process 8213 int x = ted.mPointsInView[0].x; 8214 int y = ted.mPointsInView[0].y; 8215 8216 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8217 mDeferTouchMode = TOUCH_DRAG_MODE; 8218 mLastDeferTouchX = x; 8219 mLastDeferTouchY = y; 8220 startScrollingLayer(x, y); 8221 startDrag(); 8222 } 8223 int deltaX = pinLocX((int) (mScrollX 8224 + mLastDeferTouchX - x)) 8225 - mScrollX; 8226 int deltaY = pinLocY((int) (mScrollY 8227 + mLastDeferTouchY - y)) 8228 - mScrollY; 8229 doDrag(deltaX, deltaY); 8230 if (deltaX != 0) mLastDeferTouchX = x; 8231 if (deltaY != 0) mLastDeferTouchY = y; 8232 break; 8233 } 8234 case MotionEvent.ACTION_UP: 8235 case MotionEvent.ACTION_CANCEL: 8236 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8237 // no fling in defer process 8238 mScroller.springBack(mScrollX, mScrollY, 0, 8239 computeMaxScrollX(), 0, 8240 computeMaxScrollY()); 8241 invalidate(); 8242 WebViewCore.resumePriority(); 8243 WebViewCore.resumeUpdatePicture(mWebViewCore); 8244 } 8245 mDeferTouchMode = TOUCH_DONE_MODE; 8246 break; 8247 case WebViewCore.ACTION_DOUBLETAP: 8248 // doDoubleTap() needs mLastTouchX/Y as anchor 8249 mLastDeferTouchX = ted.mPointsInView[0].x; 8250 mLastDeferTouchY = ted.mPointsInView[0].y; 8251 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8252 mDeferTouchMode = TOUCH_DONE_MODE; 8253 break; 8254 case WebViewCore.ACTION_LONGPRESS: 8255 HitTestResult hitTest = getHitTestResult(); 8256 if (hitTest != null && hitTest.mType 8257 != HitTestResult.UNKNOWN_TYPE) { 8258 performLongClick(); 8259 } 8260 mDeferTouchMode = TOUCH_DONE_MODE; 8261 break; 8262 } 8263 } 8264 } 8265 } 8266 } 8267 8268 //------------------------------------------------------------------------- 8269 // Methods can be called from a separate thread, like WebViewCore 8270 // If it needs to call the View system, it has to send message. 8271 //------------------------------------------------------------------------- 8272 8273 /** 8274 * General handler to receive message coming from webkit thread 8275 */ 8276 class PrivateHandler extends Handler { 8277 @Override 8278 public void handleMessage(Message msg) { 8279 // exclude INVAL_RECT_MSG_ID since it is frequently output 8280 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8281 if (msg.what >= FIRST_PRIVATE_MSG_ID 8282 && msg.what <= LAST_PRIVATE_MSG_ID) { 8283 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8284 - FIRST_PRIVATE_MSG_ID]); 8285 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8286 && msg.what <= LAST_PACKAGE_MSG_ID) { 8287 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8288 - FIRST_PACKAGE_MSG_ID]); 8289 } else { 8290 Log.v(LOGTAG, Integer.toString(msg.what)); 8291 } 8292 } 8293 if (mWebViewCore == null) { 8294 // after WebView's destroy() is called, skip handling messages. 8295 return; 8296 } 8297 if (mBlockWebkitViewMessages 8298 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8299 // Blocking messages from webkit 8300 return; 8301 } 8302 switch (msg.what) { 8303 case REMEMBER_PASSWORD: { 8304 mDatabase.setUsernamePassword( 8305 msg.getData().getString("host"), 8306 msg.getData().getString("username"), 8307 msg.getData().getString("password")); 8308 ((Message) msg.obj).sendToTarget(); 8309 break; 8310 } 8311 case NEVER_REMEMBER_PASSWORD: { 8312 mDatabase.setUsernamePassword( 8313 msg.getData().getString("host"), null, null); 8314 ((Message) msg.obj).sendToTarget(); 8315 break; 8316 } 8317 case PREVENT_DEFAULT_TIMEOUT: { 8318 // if timeout happens, cancel it so that it won't block UI 8319 // to continue handling touch events 8320 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8321 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8322 || (msg.arg1 == MotionEvent.ACTION_MOVE 8323 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8324 cancelWebCoreTouchEvent( 8325 viewToContentX(mLastTouchX + mScrollX), 8326 viewToContentY(mLastTouchY + mScrollY), 8327 true); 8328 } 8329 break; 8330 } 8331 case SCROLL_SELECT_TEXT: { 8332 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8333 mSentAutoScrollMessage = false; 8334 break; 8335 } 8336 if (mScrollingLayer == 0) { 8337 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8338 } else { 8339 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8340 mScrollingLayerRect.top + mAutoScrollY); 8341 } 8342 sendEmptyMessageDelayed( 8343 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8344 break; 8345 } 8346 case UPDATE_SELECTION: { 8347 if (mTouchMode == TOUCH_INIT_MODE 8348 || mTouchMode == TOUCH_SHORTPRESS_MODE 8349 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8350 updateSelection(); 8351 } 8352 break; 8353 } 8354 case SWITCH_TO_SHORTPRESS: { 8355 mInitialHitTestResult = null; // set by updateSelection() 8356 if (mTouchMode == TOUCH_INIT_MODE) { 8357 if (!getSettings().supportTouchOnly() 8358 && mPreventDefault != PREVENT_DEFAULT_YES) { 8359 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8360 updateSelection(); 8361 } else { 8362 // set to TOUCH_SHORTPRESS_MODE so that it won't 8363 // trigger double tap any more 8364 mTouchMode = TOUCH_SHORTPRESS_MODE; 8365 } 8366 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8367 mTouchMode = TOUCH_DONE_MODE; 8368 } 8369 break; 8370 } 8371 case SWITCH_TO_LONGPRESS: { 8372 if (USE_WEBKIT_RINGS || getSettings().supportTouchOnly()) { 8373 removeTouchHighlight(); 8374 } 8375 if (inFullScreenMode() || mDeferTouchProcess) { 8376 TouchEventData ted = new TouchEventData(); 8377 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8378 ted.mIds = new int[1]; 8379 ted.mIds[0] = 0; 8380 ted.mPoints = new Point[1]; 8381 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8382 viewToContentY(mLastTouchY + mScrollY)); 8383 ted.mPointsInView = new Point[1]; 8384 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8385 // metaState for long press is tricky. Should it be the 8386 // state when the press started or when the press was 8387 // released? Or some intermediary key state? For 8388 // simplicity for now, we don't set it. 8389 ted.mMetaState = 0; 8390 ted.mReprocess = mDeferTouchProcess; 8391 ted.mNativeLayer = nativeScrollableLayer( 8392 ted.mPoints[0].x, ted.mPoints[0].y, 8393 ted.mNativeLayerRect, null); 8394 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8395 mTouchEventQueue.preQueueTouchEventData(ted); 8396 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8397 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8398 mTouchMode = TOUCH_DONE_MODE; 8399 performLongClick(); 8400 } 8401 break; 8402 } 8403 case RELEASE_SINGLE_TAP: { 8404 doShortPress(); 8405 break; 8406 } 8407 case SCROLL_TO_MSG_ID: { 8408 // arg1 = animate, arg2 = onlyIfImeIsShowing 8409 // obj = Point(x, y) 8410 if (msg.arg2 == 1) { 8411 // This scroll is intended to bring the textfield into 8412 // view, but is only necessary if the IME is showing 8413 InputMethodManager imm = InputMethodManager.peekInstance(); 8414 if (imm == null || !imm.isAcceptingText() 8415 || (!imm.isActive(WebView.this) && (!inEditingMode() 8416 || !imm.isActive(mWebTextView)))) { 8417 break; 8418 } 8419 } 8420 final Point p = (Point) msg.obj; 8421 if (msg.arg1 == 1) { 8422 spawnContentScrollTo(p.x, p.y); 8423 } else { 8424 setContentScrollTo(p.x, p.y); 8425 } 8426 break; 8427 } 8428 case UPDATE_ZOOM_RANGE: { 8429 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8430 // mScrollX contains the new minPrefWidth 8431 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8432 break; 8433 } 8434 case REPLACE_BASE_CONTENT: { 8435 nativeReplaceBaseContent(msg.arg1); 8436 break; 8437 } 8438 case NEW_PICTURE_MSG_ID: { 8439 // called for new content 8440 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8441 setNewPicture(draw, true); 8442 break; 8443 } 8444 case WEBCORE_INITIALIZED_MSG_ID: 8445 // nativeCreate sets mNativeClass to a non-zero value 8446 String drawableDir = BrowserFrame.getRawResFilename( 8447 BrowserFrame.DRAWABLEDIR, mContext); 8448 nativeCreate(msg.arg1, drawableDir); 8449 if (mDelaySetPicture != null) { 8450 setNewPicture(mDelaySetPicture, true); 8451 mDelaySetPicture = null; 8452 } 8453 if (mIsPaused) { 8454 nativeSetPauseDrawing(mNativeClass, true); 8455 } 8456 break; 8457 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8458 // Make sure that the textfield is currently focused 8459 // and representing the same node as the pointer. 8460 if (inEditingMode() && 8461 mWebTextView.isSameTextField(msg.arg1)) { 8462 if (msg.arg2 == mTextGeneration) { 8463 String text = (String) msg.obj; 8464 if (null == text) { 8465 text = ""; 8466 } 8467 mWebTextView.setTextAndKeepSelection(text); 8468 } 8469 } 8470 break; 8471 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8472 displaySoftKeyboard(true); 8473 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8474 case UPDATE_TEXT_SELECTION_MSG_ID: 8475 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8476 (WebViewCore.TextSelectionData) msg.obj); 8477 break; 8478 case FORM_DID_BLUR: 8479 if (inEditingMode() 8480 && mWebTextView.isSameTextField(msg.arg1)) { 8481 hideSoftKeyboard(); 8482 } 8483 break; 8484 case RETURN_LABEL: 8485 if (inEditingMode() 8486 && mWebTextView.isSameTextField(msg.arg1)) { 8487 mWebTextView.setHint((String) msg.obj); 8488 InputMethodManager imm 8489 = InputMethodManager.peekInstance(); 8490 // The hint is propagated to the IME in 8491 // onCreateInputConnection. If the IME is already 8492 // active, restart it so that its hint text is updated. 8493 if (imm != null && imm.isActive(mWebTextView)) { 8494 imm.restartInput(mWebTextView); 8495 } 8496 } 8497 break; 8498 case UNHANDLED_NAV_KEY: 8499 navHandledKey(msg.arg1, 1, false, 0); 8500 break; 8501 case UPDATE_TEXT_ENTRY_MSG_ID: 8502 // this is sent after finishing resize in WebViewCore. Make 8503 // sure the text edit box is still on the screen. 8504 if (inEditingMode() && nativeCursorIsTextInput()) { 8505 updateWebTextViewPosition(); 8506 } 8507 break; 8508 case CLEAR_TEXT_ENTRY: 8509 clearTextEntry(); 8510 break; 8511 case INVAL_RECT_MSG_ID: { 8512 Rect r = (Rect)msg.obj; 8513 if (r == null) { 8514 invalidate(); 8515 } else { 8516 // we need to scale r from content into view coords, 8517 // which viewInvalidate() does for us 8518 viewInvalidate(r.left, r.top, r.right, r.bottom); 8519 } 8520 break; 8521 } 8522 case REQUEST_FORM_DATA: 8523 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8524 if (mWebTextView.isSameTextField(msg.arg1)) { 8525 mWebTextView.setAdapterCustom(adapter); 8526 } 8527 break; 8528 8529 case LONG_PRESS_CENTER: 8530 // as this is shared by keydown and trackballdown, reset all 8531 // the states 8532 mGotCenterDown = false; 8533 mTrackballDown = false; 8534 performLongClick(); 8535 break; 8536 8537 case WEBCORE_NEED_TOUCH_EVENTS: 8538 mForwardTouchEvents = (msg.arg1 != 0); 8539 break; 8540 8541 case PREVENT_TOUCH_ID: 8542 if (inFullScreenMode()) { 8543 break; 8544 } 8545 TouchEventData ted = (TouchEventData) msg.obj; 8546 8547 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8548 // WebCore is responding to us; remove pending timeout. 8549 // It will be re-posted when needed. 8550 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8551 } 8552 break; 8553 8554 case REQUEST_KEYBOARD: 8555 if (msg.arg1 == 0) { 8556 hideSoftKeyboard(); 8557 } else { 8558 displaySoftKeyboard(false); 8559 } 8560 break; 8561 8562 case FIND_AGAIN: 8563 // Ignore if find has been dismissed. 8564 if (mFindIsUp && mFindCallback != null) { 8565 mFindCallback.findAll(); 8566 } 8567 break; 8568 8569 case DRAG_HELD_MOTIONLESS: 8570 mHeldMotionless = MOTIONLESS_TRUE; 8571 invalidate(); 8572 // fall through to keep scrollbars awake 8573 8574 case AWAKEN_SCROLL_BARS: 8575 if (mTouchMode == TOUCH_DRAG_MODE 8576 && mHeldMotionless == MOTIONLESS_TRUE) { 8577 awakenScrollBars(ViewConfiguration 8578 .getScrollDefaultDelay(), false); 8579 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8580 .obtainMessage(AWAKEN_SCROLL_BARS), 8581 ViewConfiguration.getScrollDefaultDelay()); 8582 } 8583 break; 8584 8585 case DO_MOTION_UP: 8586 doMotionUp(msg.arg1, msg.arg2); 8587 break; 8588 8589 case SCREEN_ON: 8590 setKeepScreenOn(msg.arg1 == 1); 8591 break; 8592 8593 case ENTER_FULLSCREEN_VIDEO: 8594 int layerId = msg.arg1; 8595 8596 String url = (String) msg.obj; 8597 if (mHTML5VideoViewProxy != null) { 8598 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8599 } 8600 break; 8601 8602 case SHOW_FULLSCREEN: { 8603 View view = (View) msg.obj; 8604 int orientation = msg.arg1; 8605 int npp = msg.arg2; 8606 8607 if (inFullScreenMode()) { 8608 Log.w(LOGTAG, "Should not have another full screen."); 8609 dismissFullScreenMode(); 8610 } 8611 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8612 mFullScreenHolder.setContentView(view); 8613 mFullScreenHolder.show(); 8614 8615 break; 8616 } 8617 case HIDE_FULLSCREEN: 8618 dismissFullScreenMode(); 8619 break; 8620 8621 case DOM_FOCUS_CHANGED: 8622 if (inEditingMode()) { 8623 nativeClearCursor(); 8624 rebuildWebTextView(); 8625 } 8626 break; 8627 8628 case SHOW_RECT_MSG_ID: { 8629 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8630 int x = mScrollX; 8631 int left = contentToViewX(data.mLeft); 8632 int width = contentToViewDimension(data.mWidth); 8633 int maxWidth = contentToViewDimension(data.mContentWidth); 8634 int viewWidth = getViewWidth(); 8635 if (width < viewWidth) { 8636 // center align 8637 x += left + width / 2 - mScrollX - viewWidth / 2; 8638 } else { 8639 x += (int) (left + data.mXPercentInDoc * width 8640 - mScrollX - data.mXPercentInView * viewWidth); 8641 } 8642 if (DebugFlags.WEB_VIEW) { 8643 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8644 width + ",maxWidth=" + maxWidth + 8645 ",viewWidth=" + viewWidth + ",x=" 8646 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8647 ",xPercentInView=" + data.mXPercentInView+ ")"); 8648 } 8649 // use the passing content width to cap x as the current 8650 // mContentWidth may not be updated yet 8651 x = Math.max(0, 8652 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8653 int top = contentToViewY(data.mTop); 8654 int height = contentToViewDimension(data.mHeight); 8655 int maxHeight = contentToViewDimension(data.mContentHeight); 8656 int viewHeight = getViewHeight(); 8657 int y = (int) (top + data.mYPercentInDoc * height - 8658 data.mYPercentInView * viewHeight); 8659 if (DebugFlags.WEB_VIEW) { 8660 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8661 height + ",maxHeight=" + maxHeight + 8662 ",viewHeight=" + viewHeight + ",y=" 8663 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8664 ",yPercentInView=" + data.mYPercentInView+ ")"); 8665 } 8666 // use the passing content height to cap y as the current 8667 // mContentHeight may not be updated yet 8668 y = Math.max(0, 8669 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8670 // We need to take into account the visible title height 8671 // when scrolling since y is an absolute view position. 8672 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8673 scrollTo(x, y); 8674 } 8675 break; 8676 8677 case CENTER_FIT_RECT: 8678 centerFitRect((Rect)msg.obj); 8679 break; 8680 8681 case SET_SCROLLBAR_MODES: 8682 mHorizontalScrollBarMode = msg.arg1; 8683 mVerticalScrollBarMode = msg.arg2; 8684 break; 8685 8686 case SELECTION_STRING_CHANGED: 8687 if (mAccessibilityInjector != null) { 8688 String selectionString = (String) msg.obj; 8689 mAccessibilityInjector.onSelectionStringChange(selectionString); 8690 } 8691 break; 8692 8693 case SET_TOUCH_HIGHLIGHT_RECTS: 8694 @SuppressWarnings("unchecked") 8695 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8696 setTouchHighlightRects(rects); 8697 break; 8698 8699 case SAVE_WEBARCHIVE_FINISHED: 8700 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8701 if (saveMessage.mCallback != null) { 8702 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8703 } 8704 break; 8705 8706 case SET_AUTOFILLABLE: 8707 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8708 if (mWebTextView != null) { 8709 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8710 rebuildWebTextView(); 8711 } 8712 break; 8713 8714 case AUTOFILL_COMPLETE: 8715 if (mWebTextView != null) { 8716 // Clear the WebTextView adapter when AutoFill finishes 8717 // so that the drop down gets cleared. 8718 mWebTextView.setAdapterCustom(null); 8719 } 8720 break; 8721 8722 case SELECT_AT: 8723 nativeSelectAt(msg.arg1, msg.arg2); 8724 break; 8725 8726 default: 8727 super.handleMessage(msg); 8728 break; 8729 } 8730 } 8731 } 8732 8733 private void setTouchHighlightRects(ArrayList<Rect> rects) { 8734 invalidate(mTouchHighlightRegion.getBounds()); 8735 mTouchHighlightRegion.setEmpty(); 8736 if (rects != null) { 8737 for (Rect rect : rects) { 8738 Rect viewRect = contentToViewRect(rect); 8739 // some sites, like stories in nytimes.com, set 8740 // mouse event handler in the top div. It is not 8741 // user friendly to highlight the div if it covers 8742 // more than half of the screen. 8743 if (viewRect.width() < getWidth() >> 1 8744 || viewRect.height() < getHeight() >> 1) { 8745 mTouchHighlightRegion.union(viewRect); 8746 } else { 8747 Log.w(LOGTAG, "Skip the huge selection rect:" 8748 + viewRect); 8749 } 8750 } 8751 invalidate(mTouchHighlightRegion.getBounds()); 8752 } 8753 } 8754 8755 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8756 * acceleration) */ 8757 protected void pageSwapCallback() { 8758 if (inEditingMode()) { 8759 didUpdateWebTextViewDimensions(ANYWHERE); 8760 } 8761 } 8762 8763 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8764 if (mNativeClass == 0) { 8765 if (mDelaySetPicture != null) { 8766 throw new IllegalStateException("Tried to setNewPicture with" 8767 + " a delay picture already set! (memory leak)"); 8768 } 8769 // Not initialized yet, delay set 8770 mDelaySetPicture = draw; 8771 return; 8772 } 8773 WebViewCore.ViewState viewState = draw.mViewState; 8774 boolean isPictureAfterFirstLayout = viewState != null; 8775 8776 if (updateBaseLayer) { 8777 // Request a callback on pageSwap (to reposition the webtextview) 8778 boolean registerPageSwapCallback = 8779 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8780 8781 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8782 getSettings().getShowVisualIndicator(), 8783 isPictureAfterFirstLayout, registerPageSwapCallback); 8784 } 8785 final Point viewSize = draw.mViewSize; 8786 // We update the layout (i.e. request a layout from the 8787 // view system) if the last view size that we sent to 8788 // WebCore matches the view size of the picture we just 8789 // received in the fixed dimension. 8790 final boolean updateLayout = viewSize.x == mLastWidthSent 8791 && viewSize.y == mLastHeightSent; 8792 // Don't send scroll event for picture coming from webkit, 8793 // since the new picture may cause a scroll event to override 8794 // the saved history scroll position. 8795 mSendScrollEvent = false; 8796 recordNewContentSize(draw.mContentSize.x, 8797 draw.mContentSize.y, updateLayout); 8798 8799 if (isPictureAfterFirstLayout) { 8800 // Reset the last sent data here since dealing with new page. 8801 mLastWidthSent = 0; 8802 mZoomManager.onFirstLayout(draw); 8803 int scrollX = viewState.mShouldStartScrolledRight 8804 ? getContentWidth() : viewState.mScrollX; 8805 int scrollY = viewState.mScrollY; 8806 setContentScrollTo(scrollX, scrollY); 8807 if (!mDrawHistory) { 8808 // As we are on a new page, remove the WebTextView. This 8809 // is necessary for page loads driven by webkit, and in 8810 // particular when the user was on a password field, so 8811 // the WebTextView was visible. 8812 clearTextEntry(); 8813 } 8814 } 8815 mSendScrollEvent = true; 8816 8817 if (DebugFlags.WEB_VIEW) { 8818 Rect b = draw.mInvalRegion.getBounds(); 8819 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8820 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8821 } 8822 invalidateContentRect(draw.mInvalRegion.getBounds()); 8823 8824 if (mPictureListener != null) { 8825 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8826 } 8827 8828 // update the zoom information based on the new picture 8829 mZoomManager.onNewPicture(draw); 8830 8831 if (draw.mFocusSizeChanged && inEditingMode()) { 8832 mFocusSizeChanged = true; 8833 } 8834 if (isPictureAfterFirstLayout) { 8835 mViewManager.postReadyToDrawAll(); 8836 } 8837 } 8838 8839 /** 8840 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8841 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8842 */ 8843 private void updateTextSelectionFromMessage(int nodePointer, 8844 int textGeneration, WebViewCore.TextSelectionData data) { 8845 if (inEditingMode() 8846 && mWebTextView.isSameTextField(nodePointer) 8847 && textGeneration == mTextGeneration) { 8848 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8849 } 8850 } 8851 8852 // Class used to use a dropdown for a <select> element 8853 private class InvokeListBox implements Runnable { 8854 // Whether the listbox allows multiple selection. 8855 private boolean mMultiple; 8856 // Passed in to a list with multiple selection to tell 8857 // which items are selected. 8858 private int[] mSelectedArray; 8859 // Passed in to a list with single selection to tell 8860 // where the initial selection is. 8861 private int mSelection; 8862 8863 private Container[] mContainers; 8864 8865 // Need these to provide stable ids to my ArrayAdapter, 8866 // which normally does not have stable ids. (Bug 1250098) 8867 private class Container extends Object { 8868 /** 8869 * Possible values for mEnabled. Keep in sync with OptionStatus in 8870 * WebViewCore.cpp 8871 */ 8872 final static int OPTGROUP = -1; 8873 final static int OPTION_DISABLED = 0; 8874 final static int OPTION_ENABLED = 1; 8875 8876 String mString; 8877 int mEnabled; 8878 int mId; 8879 8880 @Override 8881 public String toString() { 8882 return mString; 8883 } 8884 } 8885 8886 /** 8887 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8888 * and allow filtering. 8889 */ 8890 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8891 public MyArrayListAdapter() { 8892 super(mContext, 8893 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8894 com.android.internal.R.layout.webview_select_singlechoice, 8895 mContainers); 8896 } 8897 8898 @Override 8899 public View getView(int position, View convertView, 8900 ViewGroup parent) { 8901 // Always pass in null so that we will get a new CheckedTextView 8902 // Otherwise, an item which was previously used as an <optgroup> 8903 // element (i.e. has no check), could get used as an <option> 8904 // element, which needs a checkbox/radio, but it would not have 8905 // one. 8906 convertView = super.getView(position, null, parent); 8907 Container c = item(position); 8908 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8909 // ListView does not draw dividers between disabled and 8910 // enabled elements. Use a LinearLayout to provide dividers 8911 LinearLayout layout = new LinearLayout(mContext); 8912 layout.setOrientation(LinearLayout.VERTICAL); 8913 if (position > 0) { 8914 View dividerTop = new View(mContext); 8915 dividerTop.setBackgroundResource( 8916 android.R.drawable.divider_horizontal_bright); 8917 layout.addView(dividerTop); 8918 } 8919 8920 if (Container.OPTGROUP == c.mEnabled) { 8921 // Currently select_dialog_multichoice uses CheckedTextViews. 8922 // If that changes, the class cast will no longer be valid. 8923 if (mMultiple) { 8924 Assert.assertTrue(convertView instanceof CheckedTextView); 8925 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8926 } 8927 } else { 8928 // c.mEnabled == Container.OPTION_DISABLED 8929 // Draw the disabled element in a disabled state. 8930 convertView.setEnabled(false); 8931 } 8932 8933 layout.addView(convertView); 8934 if (position < getCount() - 1) { 8935 View dividerBottom = new View(mContext); 8936 dividerBottom.setBackgroundResource( 8937 android.R.drawable.divider_horizontal_bright); 8938 layout.addView(dividerBottom); 8939 } 8940 return layout; 8941 } 8942 return convertView; 8943 } 8944 8945 @Override 8946 public boolean hasStableIds() { 8947 // AdapterView's onChanged method uses this to determine whether 8948 // to restore the old state. Return false so that the old (out 8949 // of date) state does not replace the new, valid state. 8950 return false; 8951 } 8952 8953 private Container item(int position) { 8954 if (position < 0 || position >= getCount()) { 8955 return null; 8956 } 8957 return (Container) getItem(position); 8958 } 8959 8960 @Override 8961 public long getItemId(int position) { 8962 Container item = item(position); 8963 if (item == null) { 8964 return -1; 8965 } 8966 return item.mId; 8967 } 8968 8969 @Override 8970 public boolean areAllItemsEnabled() { 8971 return false; 8972 } 8973 8974 @Override 8975 public boolean isEnabled(int position) { 8976 Container item = item(position); 8977 if (item == null) { 8978 return false; 8979 } 8980 return Container.OPTION_ENABLED == item.mEnabled; 8981 } 8982 } 8983 8984 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8985 mMultiple = true; 8986 mSelectedArray = selected; 8987 8988 int length = array.length; 8989 mContainers = new Container[length]; 8990 for (int i = 0; i < length; i++) { 8991 mContainers[i] = new Container(); 8992 mContainers[i].mString = array[i]; 8993 mContainers[i].mEnabled = enabled[i]; 8994 mContainers[i].mId = i; 8995 } 8996 } 8997 8998 private InvokeListBox(String[] array, int[] enabled, int selection) { 8999 mSelection = selection; 9000 mMultiple = false; 9001 9002 int length = array.length; 9003 mContainers = new Container[length]; 9004 for (int i = 0; i < length; i++) { 9005 mContainers[i] = new Container(); 9006 mContainers[i].mString = array[i]; 9007 mContainers[i].mEnabled = enabled[i]; 9008 mContainers[i].mId = i; 9009 } 9010 } 9011 9012 /* 9013 * Whenever the data set changes due to filtering, this class ensures 9014 * that the checked item remains checked. 9015 */ 9016 private class SingleDataSetObserver extends DataSetObserver { 9017 private long mCheckedId; 9018 private ListView mListView; 9019 private Adapter mAdapter; 9020 9021 /* 9022 * Create a new observer. 9023 * @param id The ID of the item to keep checked. 9024 * @param l ListView for getting and clearing the checked states 9025 * @param a Adapter for getting the IDs 9026 */ 9027 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9028 mCheckedId = id; 9029 mListView = l; 9030 mAdapter = a; 9031 } 9032 9033 @Override 9034 public void onChanged() { 9035 // The filter may have changed which item is checked. Find the 9036 // item that the ListView thinks is checked. 9037 int position = mListView.getCheckedItemPosition(); 9038 long id = mAdapter.getItemId(position); 9039 if (mCheckedId != id) { 9040 // Clear the ListView's idea of the checked item, since 9041 // it is incorrect 9042 mListView.clearChoices(); 9043 // Search for mCheckedId. If it is in the filtered list, 9044 // mark it as checked 9045 int count = mAdapter.getCount(); 9046 for (int i = 0; i < count; i++) { 9047 if (mAdapter.getItemId(i) == mCheckedId) { 9048 mListView.setItemChecked(i, true); 9049 break; 9050 } 9051 } 9052 } 9053 } 9054 } 9055 9056 public void run() { 9057 final ListView listView = (ListView) LayoutInflater.from(mContext) 9058 .inflate(com.android.internal.R.layout.select_dialog, null); 9059 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9060 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9061 .setView(listView).setCancelable(true) 9062 .setInverseBackgroundForced(true); 9063 9064 if (mMultiple) { 9065 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9066 public void onClick(DialogInterface dialog, int which) { 9067 mWebViewCore.sendMessage( 9068 EventHub.LISTBOX_CHOICES, 9069 adapter.getCount(), 0, 9070 listView.getCheckedItemPositions()); 9071 }}); 9072 b.setNegativeButton(android.R.string.cancel, 9073 new DialogInterface.OnClickListener() { 9074 public void onClick(DialogInterface dialog, int which) { 9075 mWebViewCore.sendMessage( 9076 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9077 }}); 9078 } 9079 mListBoxDialog = b.create(); 9080 listView.setAdapter(adapter); 9081 listView.setFocusableInTouchMode(true); 9082 // There is a bug (1250103) where the checks in a ListView with 9083 // multiple items selected are associated with the positions, not 9084 // the ids, so the items do not properly retain their checks when 9085 // filtered. Do not allow filtering on multiple lists until 9086 // that bug is fixed. 9087 9088 listView.setTextFilterEnabled(!mMultiple); 9089 if (mMultiple) { 9090 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9091 int length = mSelectedArray.length; 9092 for (int i = 0; i < length; i++) { 9093 listView.setItemChecked(mSelectedArray[i], true); 9094 } 9095 } else { 9096 listView.setOnItemClickListener(new OnItemClickListener() { 9097 public void onItemClick(AdapterView<?> parent, View v, 9098 int position, long id) { 9099 // Rather than sending the message right away, send it 9100 // after the page regains focus. 9101 mListBoxMessage = Message.obtain(null, 9102 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9103 mListBoxDialog.dismiss(); 9104 mListBoxDialog = null; 9105 } 9106 }); 9107 if (mSelection != -1) { 9108 listView.setSelection(mSelection); 9109 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9110 listView.setItemChecked(mSelection, true); 9111 DataSetObserver observer = new SingleDataSetObserver( 9112 adapter.getItemId(mSelection), listView, adapter); 9113 adapter.registerDataSetObserver(observer); 9114 } 9115 } 9116 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9117 public void onCancel(DialogInterface dialog) { 9118 mWebViewCore.sendMessage( 9119 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9120 mListBoxDialog = null; 9121 } 9122 }); 9123 mListBoxDialog.show(); 9124 } 9125 } 9126 9127 private Message mListBoxMessage; 9128 9129 /* 9130 * Request a dropdown menu for a listbox with multiple selection. 9131 * 9132 * @param array Labels for the listbox. 9133 * @param enabledArray State for each element in the list. See static 9134 * integers in Container class. 9135 * @param selectedArray Which positions are initally selected. 9136 */ 9137 void requestListBox(String[] array, int[] enabledArray, int[] 9138 selectedArray) { 9139 mPrivateHandler.post( 9140 new InvokeListBox(array, enabledArray, selectedArray)); 9141 } 9142 9143 /* 9144 * Request a dropdown menu for a listbox with single selection or a single 9145 * <select> element. 9146 * 9147 * @param array Labels for the listbox. 9148 * @param enabledArray State for each element in the list. See static 9149 * integers in Container class. 9150 * @param selection Which position is initally selected. 9151 */ 9152 void requestListBox(String[] array, int[] enabledArray, int selection) { 9153 mPrivateHandler.post( 9154 new InvokeListBox(array, enabledArray, selection)); 9155 } 9156 9157 // called by JNI 9158 private void sendMoveFocus(int frame, int node) { 9159 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9160 new WebViewCore.CursorData(frame, node, 0, 0)); 9161 } 9162 9163 // called by JNI 9164 private void sendMoveMouse(int frame, int node, int x, int y) { 9165 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9166 new WebViewCore.CursorData(frame, node, x, y)); 9167 } 9168 9169 /* 9170 * Send a mouse move event to the webcore thread. 9171 * 9172 * @param removeFocus Pass true to remove the WebTextView, if present. 9173 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9174 * called by JNI 9175 */ 9176 @SuppressWarnings("unused") 9177 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9178 if (removeFocus) { 9179 clearTextEntry(); 9180 } 9181 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9182 stopPaintingCaret ? 1 : 0, 0, 9183 cursorData()); 9184 } 9185 9186 /** 9187 * Called by JNI to send a message to the webcore thread that the user 9188 * touched the webpage. 9189 * @param touchGeneration Generation number of the touch, to ignore touches 9190 * after a new one has been generated. 9191 * @param frame Pointer to the frame holding the node that was touched. 9192 * @param node Pointer to the node touched. 9193 * @param x x-position of the touch. 9194 * @param y y-position of the touch. 9195 */ 9196 private void sendMotionUp(int touchGeneration, 9197 int frame, int node, int x, int y) { 9198 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9199 touchUpData.mMoveGeneration = touchGeneration; 9200 touchUpData.mFrame = frame; 9201 touchUpData.mNode = node; 9202 touchUpData.mX = x; 9203 touchUpData.mY = y; 9204 touchUpData.mNativeLayer = nativeScrollableLayer( 9205 x, y, touchUpData.mNativeLayerRect, null); 9206 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9207 } 9208 9209 9210 private int getScaledMaxXScroll() { 9211 int width; 9212 if (mHeightCanMeasure == false) { 9213 width = getViewWidth() / 4; 9214 } else { 9215 Rect visRect = new Rect(); 9216 calcOurVisibleRect(visRect); 9217 width = visRect.width() / 2; 9218 } 9219 // FIXME the divisor should be retrieved from somewhere 9220 return viewToContentX(width); 9221 } 9222 9223 private int getScaledMaxYScroll() { 9224 int height; 9225 if (mHeightCanMeasure == false) { 9226 height = getViewHeight() / 4; 9227 } else { 9228 Rect visRect = new Rect(); 9229 calcOurVisibleRect(visRect); 9230 height = visRect.height() / 2; 9231 } 9232 // FIXME the divisor should be retrieved from somewhere 9233 // the closest thing today is hard-coded into ScrollView.java 9234 // (from ScrollView.java, line 363) int maxJump = height/2; 9235 return Math.round(height * mZoomManager.getInvScale()); 9236 } 9237 9238 /** 9239 * Called by JNI to invalidate view 9240 */ 9241 private void viewInvalidate() { 9242 invalidate(); 9243 } 9244 9245 /** 9246 * Pass the key directly to the page. This assumes that 9247 * nativePageShouldHandleShiftAndArrows() returned true. 9248 */ 9249 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9250 int keyEventAction; 9251 int eventHubAction; 9252 if (down) { 9253 keyEventAction = KeyEvent.ACTION_DOWN; 9254 eventHubAction = EventHub.KEY_DOWN; 9255 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9256 } else { 9257 keyEventAction = KeyEvent.ACTION_UP; 9258 eventHubAction = EventHub.KEY_UP; 9259 } 9260 9261 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9262 1, (metaState & KeyEvent.META_SHIFT_ON) 9263 | (metaState & KeyEvent.META_ALT_ON) 9264 | (metaState & KeyEvent.META_SYM_ON) 9265 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9266 mWebViewCore.sendMessage(eventHubAction, event); 9267 } 9268 9269 // return true if the key was handled 9270 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9271 long time) { 9272 if (mNativeClass == 0) { 9273 return false; 9274 } 9275 mInitialHitTestResult = null; 9276 mLastCursorTime = time; 9277 mLastCursorBounds = nativeGetCursorRingBounds(); 9278 boolean keyHandled 9279 = nativeMoveCursor(keyCode, count, noScroll) == false; 9280 if (DebugFlags.WEB_VIEW) { 9281 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9282 + " mLastCursorTime=" + mLastCursorTime 9283 + " handled=" + keyHandled); 9284 } 9285 if (keyHandled == false) { 9286 return keyHandled; 9287 } 9288 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9289 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9290 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9291 // set last touch so that context menu related functions will work 9292 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9293 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9294 if (mHeightCanMeasure == false) { 9295 return keyHandled; 9296 } 9297 Rect visRect = new Rect(); 9298 calcOurVisibleRect(visRect); 9299 Rect outset = new Rect(visRect); 9300 int maxXScroll = visRect.width() / 2; 9301 int maxYScroll = visRect.height() / 2; 9302 outset.inset(-maxXScroll, -maxYScroll); 9303 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9304 return keyHandled; 9305 } 9306 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9307 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9308 maxXScroll); 9309 if (maxH > 0) { 9310 pinScrollBy(maxH, 0, true, 0); 9311 } else { 9312 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9313 -maxXScroll); 9314 if (maxH < 0) { 9315 pinScrollBy(maxH, 0, true, 0); 9316 } 9317 } 9318 if (mLastCursorBounds.isEmpty()) return keyHandled; 9319 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9320 return keyHandled; 9321 } 9322 if (DebugFlags.WEB_VIEW) { 9323 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9324 + contentCursorRingBounds); 9325 } 9326 requestRectangleOnScreen(viewCursorRingBounds); 9327 return keyHandled; 9328 } 9329 9330 /** 9331 * @return Whether accessibility script has been injected. 9332 */ 9333 private boolean accessibilityScriptInjected() { 9334 // TODO: Maybe the injected script should announce its presence in 9335 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9336 // will check that as one of the conditions it looks for 9337 return mAccessibilityScriptInjected; 9338 } 9339 9340 /** 9341 * Set the background color. It's white by default. Pass 9342 * zero to make the view transparent. 9343 * @param color the ARGB color described by Color.java 9344 */ 9345 @Override 9346 public void setBackgroundColor(int color) { 9347 mBackgroundColor = color; 9348 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9349 } 9350 9351 /** 9352 * @deprecated This method is now obsolete. 9353 */ 9354 @Deprecated 9355 public void debugDump() { 9356 checkThread(); 9357 nativeDebugDump(); 9358 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9359 } 9360 9361 /** 9362 * Draw the HTML page into the specified canvas. This call ignores any 9363 * view-specific zoom, scroll offset, or other changes. It does not draw 9364 * any view-specific chrome, such as progress or URL bars. 9365 * 9366 * @hide only needs to be accessible to Browser and testing 9367 */ 9368 public void drawPage(Canvas canvas) { 9369 nativeDraw(canvas, 0, 0, false); 9370 } 9371 9372 /** 9373 * Enable the communication b/t the webView and VideoViewProxy 9374 * 9375 * @hide only used by the Browser 9376 */ 9377 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9378 mHTML5VideoViewProxy = proxy; 9379 } 9380 9381 /** 9382 * Set the time to wait between passing touches to WebCore. See also the 9383 * TOUCH_SENT_INTERVAL member for further discussion. 9384 * 9385 * @hide This is only used by the DRT test application. 9386 */ 9387 public void setTouchInterval(int interval) { 9388 mCurrentTouchInterval = interval; 9389 } 9390 9391 /** 9392 * Update our cache with updatedText. 9393 * @param updatedText The new text to put in our cache. 9394 * @hide 9395 */ 9396 protected void updateCachedTextfield(String updatedText) { 9397 // Also place our generation number so that when we look at the cache 9398 // we recognize that it is up to date. 9399 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9400 } 9401 9402 /*package*/ void autoFillForm(int autoFillQueryId) { 9403 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9404 } 9405 9406 /* package */ ViewManager getViewManager() { 9407 return mViewManager; 9408 } 9409 9410 private static void checkThread() { 9411 if (Looper.myLooper() != Looper.getMainLooper()) { 9412 Throwable throwable = new Throwable( 9413 "Warning: A WebView method was called on thread '" + 9414 Thread.currentThread().getName() + "'. " + 9415 "All WebView methods must be called on the UI thread. " + 9416 "Future versions of WebView may not support use on other threads."); 9417 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9418 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9419 } 9420 } 9421 9422 /** @hide send content invalidate */ 9423 protected void contentInvalidateAll() { 9424 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9425 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9426 } 9427 } 9428 9429 /** @hide call pageSwapCallback upon next page swap */ 9430 protected void registerPageSwapCallback() { 9431 nativeRegisterPageSwapCallback(); 9432 } 9433 9434 /** 9435 * Begin collecting per-tile profiling data 9436 * 9437 * @hide only used by profiling tests 9438 */ 9439 public void tileProfilingStart() { 9440 nativeTileProfilingStart(); 9441 } 9442 /** 9443 * Return per-tile profiling data 9444 * 9445 * @hide only used by profiling tests 9446 */ 9447 public float tileProfilingStop() { 9448 return nativeTileProfilingStop(); 9449 } 9450 9451 /** @hide only used by profiling tests */ 9452 public void tileProfilingClear() { 9453 nativeTileProfilingClear(); 9454 } 9455 /** @hide only used by profiling tests */ 9456 public int tileProfilingNumFrames() { 9457 return nativeTileProfilingNumFrames(); 9458 } 9459 /** @hide only used by profiling tests */ 9460 public int tileProfilingNumTilesInFrame(int frame) { 9461 return nativeTileProfilingNumTilesInFrame(frame); 9462 } 9463 /** @hide only used by profiling tests */ 9464 public int tileProfilingGetInt(int frame, int tile, String key) { 9465 return nativeTileProfilingGetInt(frame, tile, key); 9466 } 9467 /** @hide only used by profiling tests */ 9468 public float tileProfilingGetFloat(int frame, int tile, String key) { 9469 return nativeTileProfilingGetFloat(frame, tile, key); 9470 } 9471 9472 private native int nativeCacheHitFramePointer(); 9473 private native boolean nativeCacheHitIsPlugin(); 9474 private native Rect nativeCacheHitNodeBounds(); 9475 private native int nativeCacheHitNodePointer(); 9476 /* package */ native void nativeClearCursor(); 9477 private native void nativeCreate(int ptr, String drawableDir); 9478 private native int nativeCursorFramePointer(); 9479 private native Rect nativeCursorNodeBounds(); 9480 private native int nativeCursorNodePointer(); 9481 private native boolean nativeCursorIntersects(Rect visibleRect); 9482 private native boolean nativeCursorIsAnchor(); 9483 private native boolean nativeCursorIsTextInput(); 9484 private native Point nativeCursorPosition(); 9485 private native String nativeCursorText(); 9486 /** 9487 * Returns true if the native cursor node says it wants to handle key events 9488 * (ala plugins). This can only be called if mNativeClass is non-zero! 9489 */ 9490 private native boolean nativeCursorWantsKeyEvents(); 9491 private native void nativeDebugDump(); 9492 private native void nativeDestroy(); 9493 9494 /** 9495 * Draw the picture set with a background color and extra. If 9496 * "splitIfNeeded" is true and the return value is not 0, the return value 9497 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9498 * native allocation can be freed. 9499 */ 9500 private native int nativeDraw(Canvas canvas, int color, int extra, 9501 boolean splitIfNeeded); 9502 private native void nativeDumpDisplayTree(String urlOrNull); 9503 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9504 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9505 Rect viewRect, float scale, int extras); 9506 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 9507 private native void nativeExtendSelection(int x, int y); 9508 private native int nativeFindAll(String findLower, String findUpper, 9509 boolean sameAsLastSearch); 9510 private native void nativeFindNext(boolean forward); 9511 /* package */ native int nativeFocusCandidateFramePointer(); 9512 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9513 /* package */ native boolean nativeFocusCandidateIsPassword(); 9514 private native boolean nativeFocusCandidateIsRtlText(); 9515 private native boolean nativeFocusCandidateIsTextInput(); 9516 /* package */ native int nativeFocusCandidateMaxLength(); 9517 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9518 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 9519 /* package */ native String nativeFocusCandidateName(); 9520 private native Rect nativeFocusCandidateNodeBounds(); 9521 /** 9522 * @return A Rect with left, top, right, bottom set to the corresponding 9523 * padding values in the focus candidate, if it is a textfield/textarea with 9524 * a style. Otherwise return null. This is not actually a rectangle; Rect 9525 * is being used to pass four integers. 9526 */ 9527 private native Rect nativeFocusCandidatePaddingRect(); 9528 /* package */ native int nativeFocusCandidatePointer(); 9529 private native String nativeFocusCandidateText(); 9530 /* package */ native float nativeFocusCandidateTextSize(); 9531 /* package */ native int nativeFocusCandidateLineHeight(); 9532 /** 9533 * Returns an integer corresponding to WebView.cpp::type. 9534 * See WebTextView.setType() 9535 */ 9536 private native int nativeFocusCandidateType(); 9537 private native boolean nativeFocusIsPlugin(); 9538 private native Rect nativeFocusNodeBounds(); 9539 /* package */ native int nativeFocusNodePointer(); 9540 private native Rect nativeGetCursorRingBounds(); 9541 private native String nativeGetSelection(); 9542 private native boolean nativeHasCursorNode(); 9543 private native boolean nativeHasFocusNode(); 9544 private native void nativeHideCursor(); 9545 private native boolean nativeHitSelection(int x, int y); 9546 private native String nativeImageURI(int x, int y); 9547 private native void nativeInstrumentReport(); 9548 private native Rect nativeLayerBounds(int layer); 9549 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9550 // return true if the page has been scrolled 9551 private native boolean nativeMotionUp(int x, int y, int slop); 9552 // returns false if it handled the key 9553 private native boolean nativeMoveCursor(int keyCode, int count, 9554 boolean noScroll); 9555 private native int nativeMoveGeneration(); 9556 private native void nativeMoveSelection(int x, int y); 9557 /** 9558 * @return true if the page should get the shift and arrow keys, rather 9559 * than select text/navigation. 9560 * 9561 * If the focus is a plugin, or if the focus and cursor match and are 9562 * a contentEditable element, then the page should handle these keys. 9563 */ 9564 private native boolean nativePageShouldHandleShiftAndArrows(); 9565 private native boolean nativePointInNavCache(int x, int y, int slop); 9566 // Like many other of our native methods, you must make sure that 9567 // mNativeClass is not null before calling this method. 9568 private native void nativeResetSelection(); 9569 private native Point nativeSelectableText(); 9570 private native void nativeSelectAll(); 9571 private native void nativeSelectBestAt(Rect rect); 9572 private native void nativeSelectAt(int x, int y); 9573 private native int nativeSelectionX(); 9574 private native int nativeSelectionY(); 9575 private native int nativeFindIndex(); 9576 private native void nativeSetExtendSelection(); 9577 private native void nativeSetFindIsEmpty(); 9578 private native void nativeSetFindIsUp(boolean isUp); 9579 private native void nativeSetHeightCanMeasure(boolean measure); 9580 private native void nativeSetBaseLayer(int layer, Region invalRegion, 9581 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9582 boolean registerPageSwapCallback); 9583 private native int nativeGetBaseLayer(); 9584 private native void nativeShowCursorTimed(); 9585 private native void nativeReplaceBaseContent(int content); 9586 private native void nativeCopyBaseContentToPicture(Picture pict); 9587 private native boolean nativeHasContent(); 9588 private native void nativeSetSelectionPointer(int nativeInstance, 9589 boolean set, float scale, int x, int y); 9590 private native boolean nativeStartSelection(int x, int y); 9591 private native void nativeStopGL(); 9592 private native Rect nativeSubtractLayers(Rect content); 9593 private native int nativeTextGeneration(); 9594 private native void nativeRegisterPageSwapCallback(); 9595 private native void nativeTileProfilingStart(); 9596 private native float nativeTileProfilingStop(); 9597 private native void nativeTileProfilingClear(); 9598 private native int nativeTileProfilingNumFrames(); 9599 private native int nativeTileProfilingNumTilesInFrame(int frame); 9600 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9601 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9602 // Never call this version except by updateCachedTextfield(String) - 9603 // we always want to pass in our generation number. 9604 private native void nativeUpdateCachedTextfield(String updatedText, 9605 int generation); 9606 private native boolean nativeWordSelection(int x, int y); 9607 // return NO_LEFTEDGE means failure. 9608 static final int NO_LEFTEDGE = -1; 9609 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9610 9611 private native void nativeUseHardwareAccelSkia(boolean enabled); 9612 9613 // Returns a pointer to the scrollable LayerAndroid at the given point. 9614 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9615 Rect scrollBounds); 9616 /** 9617 * Scroll the specified layer. 9618 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9619 * @param newX Destination x position to which to scroll. 9620 * @param newY Destination y position to which to scroll. 9621 * @return True if the layer is successfully scrolled. 9622 */ 9623 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9624 private native void nativeSetIsScrolling(boolean isScrolling); 9625 private native int nativeGetBackgroundColor(); 9626 native boolean nativeSetProperty(String key, String value); 9627 native String nativeGetProperty(String key); 9628 private native void nativeGetTextSelectionRegion(int instance, Region region); 9629 private native void nativeGetSelectionHandles(int instance, int[] handles); 9630 /** 9631 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9632 */ 9633 private static native void nativeOnTrimMemory(int level); 9634 private static native void nativeSetPauseDrawing(int instance, boolean pause); 9635} 9636