WebView.java revision 50ba5a26e6d48928b94e44fc67f057d29f40b261
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.ActivityManager; 21import android.app.AlertDialog; 22import android.content.BroadcastReceiver; 23import android.content.ClipboardManager; 24import android.content.ComponentCallbacks2; 25import android.content.Context; 26import android.content.DialogInterface; 27import android.content.DialogInterface.OnCancelListener; 28import android.content.Intent; 29import android.content.IntentFilter; 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.os.SystemClock; 60import android.provider.Settings; 61import android.speech.tts.TextToSpeech; 62import android.util.AttributeSet; 63import android.util.EventLog; 64import android.util.Log; 65import android.view.Display; 66import android.view.Gravity; 67import android.view.HapticFeedbackConstants; 68import android.view.HardwareCanvas; 69import android.view.InputDevice; 70import android.view.KeyCharacterMap; 71import android.view.KeyEvent; 72import android.view.LayoutInflater; 73import android.view.MotionEvent; 74import android.view.ScaleGestureDetector; 75import android.view.SoundEffectConstants; 76import android.view.VelocityTracker; 77import android.view.View; 78import android.view.ViewConfiguration; 79import android.view.ViewGroup; 80import android.view.ViewParent; 81import android.view.ViewTreeObserver; 82import android.view.WindowManager; 83import android.view.accessibility.AccessibilityEvent; 84import android.view.accessibility.AccessibilityManager; 85import android.view.accessibility.AccessibilityNodeInfo; 86import android.view.inputmethod.BaseInputConnection; 87import android.view.inputmethod.EditorInfo; 88import android.view.inputmethod.InputConnection; 89import android.view.inputmethod.InputMethodManager; 90import android.webkit.WebTextView.AutoCompleteAdapter; 91import android.webkit.WebViewCore.DrawData; 92import android.webkit.WebViewCore.EventHub; 93import android.webkit.WebViewCore.TouchEventData; 94import android.webkit.WebViewCore.TouchHighlightData; 95import android.webkit.WebViewCore.WebKitHitTest; 96import android.widget.AbsoluteLayout; 97import android.widget.Adapter; 98import android.widget.AdapterView; 99import android.widget.AdapterView.OnItemClickListener; 100import android.widget.ArrayAdapter; 101import android.widget.CheckedTextView; 102import android.widget.LinearLayout; 103import android.widget.ListView; 104import android.widget.OverScroller; 105import android.widget.Toast; 106 107import junit.framework.Assert; 108 109import java.io.File; 110import java.io.FileInputStream; 111import java.io.FileNotFoundException; 112import java.io.FileOutputStream; 113import java.io.IOException; 114import java.io.InputStream; 115import java.io.OutputStream; 116import java.net.URLDecoder; 117import java.util.ArrayList; 118import java.util.HashMap; 119import java.util.HashSet; 120import java.util.List; 121import java.util.Map; 122import java.util.Set; 123import java.util.Vector; 124import java.util.regex.Matcher; 125import java.util.regex.Pattern; 126 127import javax.microedition.khronos.egl.EGL10; 128import javax.microedition.khronos.egl.EGLContext; 129import javax.microedition.khronos.egl.EGLDisplay; 130 131import static javax.microedition.khronos.egl.EGL10.EGL_DEFAULT_DISPLAY; 132 133/** 134 * <p>A View that displays web pages. This class is the basis upon which you 135 * can roll your own web browser or simply display some online content within your Activity. 136 * It uses the WebKit rendering engine to display 137 * web pages and includes methods to navigate forward and backward 138 * through a history, zoom in and out, perform text searches and more.</p> 139 * <p>To enable the built-in zoom, set 140 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 141 * (introduced in API version 3). 142 * <p>Note that, in order for your Activity to access the Internet and load web pages 143 * in a WebView, you must add the {@code INTERNET} permissions to your 144 * Android Manifest file:</p> 145 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 146 * 147 * <p>This must be a child of the <a 148 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 149 * element.</p> 150 * 151 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 152 * tutorial</a>.</p> 153 * 154 * <h3>Basic usage</h3> 155 * 156 * <p>By default, a WebView provides no browser-like widgets, does not 157 * enable JavaScript and web page errors are ignored. If your goal is only 158 * to display some HTML as a part of your UI, this is probably fine; 159 * the user won't need to interact with the web page beyond reading 160 * it, and the web page won't need to interact with the user. If you 161 * actually want a full-blown web browser, then you probably want to 162 * invoke the Browser application with a URL Intent rather than show it 163 * with a WebView. For example: 164 * <pre> 165 * Uri uri = Uri.parse("http://www.example.com"); 166 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 167 * startActivity(intent); 168 * </pre> 169 * <p>See {@link android.content.Intent} for more information.</p> 170 * 171 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 172 * or set the entire Activity window as a WebView during {@link 173 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 174 * <pre class="prettyprint"> 175 * WebView webview = new WebView(this); 176 * setContentView(webview); 177 * </pre> 178 * 179 * <p>Then load the desired web page:</p> 180 * <pre> 181 * // Simplest usage: note that an exception will NOT be thrown 182 * // if there is an error loading this page (see below). 183 * webview.loadUrl("http://slashdot.org/"); 184 * 185 * // OR, you can also load from an HTML string: 186 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 187 * webview.loadData(summary, "text/html", null); 188 * // ... although note that there are restrictions on what this HTML can do. 189 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 190 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 191 * </pre> 192 * 193 * <p>A WebView has several customization points where you can add your 194 * own behavior. These are:</p> 195 * 196 * <ul> 197 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 198 * This class is called when something that might impact a 199 * browser UI happens, for instance, progress updates and 200 * JavaScript alerts are sent here (see <a 201 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 202 * </li> 203 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 204 * It will be called when things happen that impact the 205 * rendering of the content, eg, errors or form submissions. You 206 * can also intercept URL loading here (via {@link 207 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 208 * shouldOverrideUrlLoading()}).</li> 209 * <li>Modifying the {@link android.webkit.WebSettings}, such as 210 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 211 * setJavaScriptEnabled()}. </li> 212 * <li>Injecting Java objects into the WebView using the 213 * {@link android.webkit.WebView#addJavascriptInterface} method. This 214 * method allows you to inject Java objects into a page's JavaScript 215 * context, so that they can be accessed by JavaScript in the page.</li> 216 * </ul> 217 * 218 * <p>Here's a more complicated example, showing error handling, 219 * settings, and progress notification:</p> 220 * 221 * <pre class="prettyprint"> 222 * // Let's display the progress in the activity title bar, like the 223 * // browser app does. 224 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 225 * 226 * webview.getSettings().setJavaScriptEnabled(true); 227 * 228 * final Activity activity = this; 229 * webview.setWebChromeClient(new WebChromeClient() { 230 * public void onProgressChanged(WebView view, int progress) { 231 * // Activities and WebViews measure progress with different scales. 232 * // The progress meter will automatically disappear when we reach 100% 233 * activity.setProgress(progress * 1000); 234 * } 235 * }); 236 * webview.setWebViewClient(new WebViewClient() { 237 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 238 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 239 * } 240 * }); 241 * 242 * webview.loadUrl("http://slashdot.org/"); 243 * </pre> 244 * 245 * <h3>Cookie and window management</h3> 246 * 247 * <p>For obvious security reasons, your application has its own 248 * cache, cookie store etc.—it does not share the Browser 249 * application's data. Cookies are managed on a separate thread, so 250 * operations like index building don't block the UI 251 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 252 * if you want to use cookies in your application. 253 * </p> 254 * 255 * <p>By default, requests by the HTML to open new windows are 256 * ignored. This is true whether they be opened by JavaScript or by 257 * the target attribute on a link. You can customize your 258 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 259 * and render them in whatever manner you want.</p> 260 * 261 * <p>The standard behavior for an Activity is to be destroyed and 262 * recreated when the device orientation or any other configuration changes. This will cause 263 * the WebView to reload the current page. If you don't want that, you 264 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 265 * changes, and then just leave the WebView alone. It'll automatically 266 * re-orient itself as appropriate. Read <a 267 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 268 * more information about how to handle configuration changes during runtime.</p> 269 * 270 * 271 * <h3>Building web pages to support different screen densities</h3> 272 * 273 * <p>The screen density of a device is based on the screen resolution. A screen with low density 274 * has fewer available pixels per inch, where a screen with high density 275 * has more — sometimes significantly more — pixels per inch. The density of a 276 * screen is important because, other things being equal, a UI element (such as a button) whose 277 * height and width are defined in terms of screen pixels will appear larger on the lower density 278 * screen and smaller on the higher density screen. 279 * For simplicity, Android collapses all actual screen densities into three generalized densities: 280 * high, medium, and low.</p> 281 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 282 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 283 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 284 * are bigger). 285 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 286 * you (as a web developer) target screens with different screen densities.</p> 287 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 288 * <ul> 289 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 290 * default scaling factor used for the current device. For example, if the value of {@code 291 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 292 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 293 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 294 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 295 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 296 * (discussed below), then you can stop this default scaling behavior.</li> 297 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 298 * densities for which this style sheet is to be used. The corresponding value should be either 299 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 300 * density, or high density screens, respectively. For example: 301 * <pre> 302 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 303 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 304 * which is the high density pixel ratio.</p> 305 * </li> 306 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 307 * this to specify the target density for which the web page is designed, using the following 308 * values: 309 * <ul> 310 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 311 * occurs.</li> 312 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 313 * as appropriate.</li> 314 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 315 * low density screens scale down. This is also the default behavior.</li> 316 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 317 * as appropriate.</li> 318 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 319 * values are 70-400).</li> 320 * </ul> 321 * <p>Here's an example meta tag to specify the target density:</p> 322 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 323 * </ul> 324 * <p>If you want to modify your web page for different densities, by using the {@code 325 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 326 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 327 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 328 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 329 * 330 * <h3>HTML5 Video support</h3> 331 * 332 * <p>In order to support inline HTML5 video in your application, you need to have hardware 333 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 334 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 335 * and {@link WebChromeClient#onHideCustomView()} are required, 336 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 337 * </p> 338 * 339 * 340 */ 341@Widget 342public class WebView extends AbsoluteLayout 343 implements ViewTreeObserver.OnGlobalFocusChangeListener, 344 ViewGroup.OnHierarchyChangeListener { 345 346 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 347 @Override 348 public void onGlobalLayout() { 349 if (isShown()) { 350 setGLRectViewport(); 351 } 352 } 353 } 354 355 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 356 @Override 357 public void onScrollChanged() { 358 if (isShown()) { 359 setGLRectViewport(); 360 } 361 } 362 } 363 364 /** 365 * InputConnection used for ContentEditable. This captures the 'delete' 366 * commands and sends delete key presses. 367 */ 368 private class WebViewInputConnection extends BaseInputConnection { 369 public WebViewInputConnection() { 370 super(WebView.this, false); 371 } 372 373 private void sendKeyPress(int keyCode) { 374 long eventTime = SystemClock.uptimeMillis(); 375 sendKeyEvent(new KeyEvent(eventTime, eventTime, 376 KeyEvent.ACTION_DOWN, keyCode, 0, 0, 377 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 378 KeyEvent.FLAG_SOFT_KEYBOARD)); 379 sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, 380 KeyEvent.ACTION_UP, keyCode, 0, 0, 381 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 382 KeyEvent.FLAG_SOFT_KEYBOARD)); 383 } 384 385 @Override 386 public boolean deleteSurroundingText(int leftLength, int rightLength) { 387 // Look for one-character delete and send it as a key press. 388 if (leftLength == 1 && rightLength == 0) { 389 sendKeyPress(KeyEvent.KEYCODE_DEL); 390 } else if (leftLength == 0 && rightLength == 1){ 391 sendKeyPress(KeyEvent.KEYCODE_FORWARD_DEL); 392 } else if (mWebViewCore != null) { 393 mWebViewCore.sendMessage(EventHub.DELETE_SURROUNDING_TEXT, 394 leftLength, rightLength); 395 } 396 return super.deleteSurroundingText(leftLength, rightLength); 397 } 398 } 399 400 401 // The listener to capture global layout change event. 402 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 403 404 // The listener to capture scroll event. 405 private InnerScrollChangedListener mScrollChangedListener = null; 406 407 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 408 // the screen all-the-time. Good for profiling our drawing code 409 static private final boolean AUTO_REDRAW_HACK = false; 410 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 411 private boolean mAutoRedraw; 412 413 // Reference to the AlertDialog displayed by InvokeListBox. 414 // It's used to dismiss the dialog in destroy if not done before. 415 private AlertDialog mListBoxDialog = null; 416 417 static final String LOGTAG = "webview"; 418 419 private ZoomManager mZoomManager; 420 421 private final Rect mGLRectViewport = new Rect(); 422 private final Rect mViewRectViewport = new Rect(); 423 private final RectF mVisibleContentRect = new RectF(); 424 private boolean mGLViewportEmpty = false; 425 WebViewInputConnection mInputConnection = new WebViewInputConnection(); 426 427 428 /** 429 * Transportation object for returning WebView across thread boundaries. 430 */ 431 public class WebViewTransport { 432 private WebView mWebview; 433 434 /** 435 * Set the WebView to the transportation object. 436 * @param webview The WebView to transport. 437 */ 438 public synchronized void setWebView(WebView webview) { 439 mWebview = webview; 440 } 441 442 /** 443 * Return the WebView object. 444 * @return WebView The transported WebView object. 445 */ 446 public synchronized WebView getWebView() { 447 return mWebview; 448 } 449 } 450 451 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 452 private static OnTrimMemoryListener sInstance = null; 453 454 static void init(Context c) { 455 if (sInstance == null) { 456 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 457 } 458 } 459 460 private OnTrimMemoryListener(Context c) { 461 c.registerComponentCallbacks(this); 462 } 463 464 @Override 465 public void onConfigurationChanged(Configuration newConfig) { 466 // Ignore 467 } 468 469 @Override 470 public void onLowMemory() { 471 // Ignore 472 } 473 474 @Override 475 public void onTrimMemory(int level) { 476 if (DebugFlags.WEB_VIEW) { 477 Log.d("WebView", "onTrimMemory: " + level); 478 } 479 WebView.nativeOnTrimMemory(level); 480 } 481 482 } 483 484 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 485 private final CallbackProxy mCallbackProxy; 486 487 private final WebViewDatabase mDatabase; 488 489 // SSL certificate for the main top-level page (if secure) 490 private SslCertificate mCertificate; 491 492 // Native WebView pointer that is 0 until the native object has been 493 // created. 494 private int mNativeClass; 495 // This would be final but it needs to be set to null when the WebView is 496 // destroyed. 497 private WebViewCore mWebViewCore; 498 // Handler for dispatching UI messages. 499 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 500 private WebTextView mWebTextView; 501 // Used to ignore changes to webkit text that arrives to the UI side after 502 // more key events. 503 private int mTextGeneration; 504 505 /* package */ void incrementTextGeneration() { mTextGeneration++; } 506 507 // Used by WebViewCore to create child views. 508 /* package */ final ViewManager mViewManager; 509 510 // Used to display in full screen mode 511 PluginFullScreenHolder mFullScreenHolder; 512 513 /** 514 * Position of the last touch event in pixels. 515 * Use integer to prevent loss of dragging delta calculation accuracy; 516 * which was done in float and converted to integer, and resulted in gradual 517 * and compounding touch position and view dragging mismatch. 518 */ 519 private int mLastTouchX; 520 private int mLastTouchY; 521 private int mStartTouchX; 522 private int mStartTouchY; 523 private float mAverageAngle; 524 525 /** 526 * Time of the last touch event. 527 */ 528 private long mLastTouchTime; 529 530 /** 531 * Time of the last time sending touch event to WebViewCore 532 */ 533 private long mLastSentTouchTime; 534 535 /** 536 * The minimum elapsed time before sending another ACTION_MOVE event to 537 * WebViewCore. This really should be tuned for each type of the devices. 538 * For example in Google Map api test case, it takes Dream device at least 539 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 540 * triggering the layout and drawing the picture. While the same process 541 * takes 60+ms on the current high speed device. If we make 542 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 543 * to WebViewCore queue and the real layout and draw events will be pushed 544 * to further, which slows down the refresh rate. Choose 50 to favor the 545 * current high speed devices. For Dream like devices, 100 is a better 546 * choice. Maybe make this in the buildspec later. 547 * (Update 12/14/2010: changed to 0 since current device should be able to 548 * handle the raw events and Map team voted to have the raw events too. 549 */ 550 private static final int TOUCH_SENT_INTERVAL = 0; 551 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 552 553 /** 554 * Helper class to get velocity for fling 555 */ 556 VelocityTracker mVelocityTracker; 557 private int mMaximumFling; 558 private float mLastVelocity; 559 private float mLastVelX; 560 private float mLastVelY; 561 562 // The id of the native layer being scrolled. 563 private int mCurrentScrollingLayerId; 564 private Rect mScrollingLayerRect = new Rect(); 565 566 // only trigger accelerated fling if the new velocity is at least 567 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 568 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 569 570 /** 571 * Touch mode 572 */ 573 private int mTouchMode = TOUCH_DONE_MODE; 574 private static final int TOUCH_INIT_MODE = 1; 575 private static final int TOUCH_DRAG_START_MODE = 2; 576 private static final int TOUCH_DRAG_MODE = 3; 577 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 578 private static final int TOUCH_SHORTPRESS_MODE = 5; 579 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 580 private static final int TOUCH_DONE_MODE = 7; 581 private static final int TOUCH_PINCH_DRAG = 8; 582 private static final int TOUCH_DRAG_LAYER_MODE = 9; 583 584 // Whether to forward the touch events to WebCore 585 // Can only be set by WebKit via JNI. 586 private boolean mForwardTouchEvents = false; 587 588 // Whether to prevent default during touch. The initial value depends on 589 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 590 // for touch down. Otherwise UI will wait for the answer of the first 591 // confirmed move before taking over the control. 592 private static final int PREVENT_DEFAULT_NO = 0; 593 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 594 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 595 private static final int PREVENT_DEFAULT_YES = 3; 596 private static final int PREVENT_DEFAULT_IGNORE = 4; 597 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 598 599 // true when the touch movement exceeds the slop 600 private boolean mConfirmMove; 601 602 // if true, touch events will be first processed by WebCore, if prevent 603 // default is not set, the UI will continue handle them. 604 private boolean mDeferTouchProcess; 605 606 // to avoid interfering with the current touch events, track them 607 // separately. Currently no snapping or fling in the deferred process mode 608 private int mDeferTouchMode = TOUCH_DONE_MODE; 609 private float mLastDeferTouchX; 610 private float mLastDeferTouchY; 611 612 // To keep track of whether the current drag was initiated by a WebTextView, 613 // so that we know not to hide the cursor 614 boolean mDragFromTextInput; 615 616 // Whether or not to draw the cursor ring. 617 private boolean mDrawCursorRing = true; 618 619 // true if onPause has been called (and not onResume) 620 private boolean mIsPaused; 621 622 private HitTestResult mInitialHitTestResult; 623 624 /** 625 * Customizable constant 626 */ 627 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 628 private int mTouchSlopSquare; 629 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 630 private int mDoubleTapSlopSquare; 631 // pre-computed density adjusted navigation slop 632 private int mNavSlop; 633 // This should be ViewConfiguration.getTapTimeout() 634 // But system time out is 100ms, which is too short for the browser. 635 // In the browser, if it switches out of tap too soon, jump tap won't work. 636 // In addition, a double tap on a trackpad will always have a duration of 637 // 300ms, so this value must be at least that (otherwise we will timeout the 638 // first tap and convert it to a long press). 639 private static final int TAP_TIMEOUT = 300; 640 // This should be ViewConfiguration.getLongPressTimeout() 641 // But system time out is 500ms, which is too short for the browser. 642 // With a short timeout, it's difficult to treat trigger a short press. 643 private static final int LONG_PRESS_TIMEOUT = 1000; 644 // needed to avoid flinging after a pause of no movement 645 private static final int MIN_FLING_TIME = 250; 646 // draw unfiltered after drag is held without movement 647 private static final int MOTIONLESS_TIME = 100; 648 // The amount of content to overlap between two screens when going through 649 // pages with the space bar, in pixels. 650 private static final int PAGE_SCROLL_OVERLAP = 24; 651 652 /** 653 * These prevent calling requestLayout if either dimension is fixed. This 654 * depends on the layout parameters and the measure specs. 655 */ 656 boolean mWidthCanMeasure; 657 boolean mHeightCanMeasure; 658 659 // Remember the last dimensions we sent to the native side so we can avoid 660 // sending the same dimensions more than once. 661 int mLastWidthSent; 662 int mLastHeightSent; 663 // Since view height sent to webkit could be fixed to avoid relayout, this 664 // value records the last sent actual view height. 665 int mLastActualHeightSent; 666 667 private int mContentWidth; // cache of value from WebViewCore 668 private int mContentHeight; // cache of value from WebViewCore 669 670 // Need to have the separate control for horizontal and vertical scrollbar 671 // style than the View's single scrollbar style 672 private boolean mOverlayHorizontalScrollbar = true; 673 private boolean mOverlayVerticalScrollbar = false; 674 675 // our standard speed. this way small distances will be traversed in less 676 // time than large distances, but we cap the duration, so that very large 677 // distances won't take too long to get there. 678 private static final int STD_SPEED = 480; // pixels per second 679 // time for the longest scroll animation 680 private static final int MAX_DURATION = 750; // milliseconds 681 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 682 683 // Used by OverScrollGlow 684 OverScroller mScroller; 685 686 private boolean mInOverScrollMode = false; 687 private static Paint mOverScrollBackground; 688 private static Paint mOverScrollBorder; 689 690 private boolean mWrapContent; 691 private static final int MOTIONLESS_FALSE = 0; 692 private static final int MOTIONLESS_PENDING = 1; 693 private static final int MOTIONLESS_TRUE = 2; 694 private static final int MOTIONLESS_IGNORE = 3; 695 private int mHeldMotionless; 696 697 // An instance for injecting accessibility in WebViews with disabled 698 // JavaScript or ones for which no accessibility script exists 699 private AccessibilityInjector mAccessibilityInjector; 700 701 // flag indicating if accessibility script is injected so we 702 // know to handle Shift and arrows natively first 703 private boolean mAccessibilityScriptInjected; 704 705 static final boolean USE_JAVA_TEXT_SELECTION = true; 706 static final boolean DEBUG_TEXT_HANDLES = false; 707 private Region mTextSelectionRegion = new Region(); 708 private Paint mTextSelectionPaint; 709 private Drawable mSelectHandleLeft; 710 private Drawable mSelectHandleRight; 711 712 static boolean sDisableNavcache = false; 713 // the color used to highlight the touch rectangles 714 private static final int HIGHLIGHT_COLOR = 0x6633b5e5; 715 // the round corner for the highlight path 716 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 717 // the region indicating where the user touched on the screen 718 private Region mTouchHighlightRegion = new Region(); 719 // the paint for the touch highlight 720 private Paint mTouchHightlightPaint; 721 // debug only 722 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 723 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 724 private Paint mTouchCrossHairColor; 725 private int mTouchHighlightX; 726 private int mTouchHighlightY; 727 private long mTouchHighlightRequested; 728 729 // Basically this proxy is used to tell the Video to update layer tree at 730 // SetBaseLayer time and to pause when WebView paused. 731 private HTML5VideoViewProxy mHTML5VideoViewProxy; 732 733 // If we are using a set picture, don't send view updates to webkit 734 private boolean mBlockWebkitViewMessages = false; 735 736 // cached value used to determine if we need to switch drawing models 737 private boolean mHardwareAccelSkia = false; 738 739 /* 740 * Private message ids 741 */ 742 private static final int REMEMBER_PASSWORD = 1; 743 private static final int NEVER_REMEMBER_PASSWORD = 2; 744 private static final int SWITCH_TO_SHORTPRESS = 3; 745 private static final int SWITCH_TO_LONGPRESS = 4; 746 private static final int RELEASE_SINGLE_TAP = 5; 747 private static final int REQUEST_FORM_DATA = 6; 748 private static final int DRAG_HELD_MOTIONLESS = 8; 749 private static final int AWAKEN_SCROLL_BARS = 9; 750 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 751 private static final int SCROLL_SELECT_TEXT = 11; 752 753 754 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 755 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 756 757 /* 758 * Package message ids 759 */ 760 static final int SCROLL_TO_MSG_ID = 101; 761 static final int NEW_PICTURE_MSG_ID = 105; 762 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 763 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 764 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 765 static final int UPDATE_ZOOM_RANGE = 109; 766 static final int UNHANDLED_NAV_KEY = 110; 767 static final int CLEAR_TEXT_ENTRY = 111; 768 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 769 static final int SHOW_RECT_MSG_ID = 113; 770 static final int LONG_PRESS_CENTER = 114; 771 static final int PREVENT_TOUCH_ID = 115; 772 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 773 // obj=Rect in doc coordinates 774 static final int INVAL_RECT_MSG_ID = 117; 775 static final int REQUEST_KEYBOARD = 118; 776 static final int DO_MOTION_UP = 119; 777 static final int SHOW_FULLSCREEN = 120; 778 static final int HIDE_FULLSCREEN = 121; 779 static final int DOM_FOCUS_CHANGED = 122; 780 static final int REPLACE_BASE_CONTENT = 123; 781 static final int FORM_DID_BLUR = 124; 782 static final int RETURN_LABEL = 125; 783 static final int FIND_AGAIN = 126; 784 static final int CENTER_FIT_RECT = 127; 785 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 786 static final int SET_SCROLLBAR_MODES = 129; 787 static final int SELECTION_STRING_CHANGED = 130; 788 static final int HIT_TEST_RESULT = 131; 789 static final int SAVE_WEBARCHIVE_FINISHED = 132; 790 791 static final int SET_AUTOFILLABLE = 133; 792 static final int AUTOFILL_COMPLETE = 134; 793 794 static final int SELECT_AT = 135; 795 static final int SCREEN_ON = 136; 796 static final int ENTER_FULLSCREEN_VIDEO = 137; 797 static final int UPDATE_SELECTION = 138; 798 static final int UPDATE_ZOOM_DENSITY = 139; 799 800 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 801 private static final int LAST_PACKAGE_MSG_ID = HIT_TEST_RESULT; 802 803 static final String[] HandlerPrivateDebugString = { 804 "REMEMBER_PASSWORD", // = 1; 805 "NEVER_REMEMBER_PASSWORD", // = 2; 806 "SWITCH_TO_SHORTPRESS", // = 3; 807 "SWITCH_TO_LONGPRESS", // = 4; 808 "RELEASE_SINGLE_TAP", // = 5; 809 "REQUEST_FORM_DATA", // = 6; 810 "RESUME_WEBCORE_PRIORITY", // = 7; 811 "DRAG_HELD_MOTIONLESS", // = 8; 812 "AWAKEN_SCROLL_BARS", // = 9; 813 "PREVENT_DEFAULT_TIMEOUT", // = 10; 814 "SCROLL_SELECT_TEXT" // = 11; 815 }; 816 817 static final String[] HandlerPackageDebugString = { 818 "SCROLL_TO_MSG_ID", // = 101; 819 "102", // = 102; 820 "103", // = 103; 821 "104", // = 104; 822 "NEW_PICTURE_MSG_ID", // = 105; 823 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 824 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 825 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 826 "UPDATE_ZOOM_RANGE", // = 109; 827 "UNHANDLED_NAV_KEY", // = 110; 828 "CLEAR_TEXT_ENTRY", // = 111; 829 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 830 "SHOW_RECT_MSG_ID", // = 113; 831 "LONG_PRESS_CENTER", // = 114; 832 "PREVENT_TOUCH_ID", // = 115; 833 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 834 "INVAL_RECT_MSG_ID", // = 117; 835 "REQUEST_KEYBOARD", // = 118; 836 "DO_MOTION_UP", // = 119; 837 "SHOW_FULLSCREEN", // = 120; 838 "HIDE_FULLSCREEN", // = 121; 839 "DOM_FOCUS_CHANGED", // = 122; 840 "REPLACE_BASE_CONTENT", // = 123; 841 "FORM_DID_BLUR", // = 124; 842 "RETURN_LABEL", // = 125; 843 "FIND_AGAIN", // = 126; 844 "CENTER_FIT_RECT", // = 127; 845 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 846 "SET_SCROLLBAR_MODES", // = 129; 847 "SELECTION_STRING_CHANGED", // = 130; 848 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 849 "SAVE_WEBARCHIVE_FINISHED", // = 132; 850 "SET_AUTOFILLABLE", // = 133; 851 "AUTOFILL_COMPLETE", // = 134; 852 "SELECT_AT", // = 135; 853 "SCREEN_ON", // = 136; 854 "ENTER_FULLSCREEN_VIDEO", // = 137; 855 "UPDATE_SELECTION", // = 138; 856 "UPDATE_ZOOM_DENSITY" // = 139; 857 }; 858 859 // If the site doesn't use the viewport meta tag to specify the viewport, 860 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 861 static final int DEFAULT_VIEWPORT_WIDTH = 980; 862 863 // normally we try to fit the content to the minimum preferred width 864 // calculated by the Webkit. To avoid the bad behavior when some site's 865 // minimum preferred width keeps growing when changing the viewport width or 866 // the minimum preferred width is huge, an upper limit is needed. 867 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 868 869 // initial scale in percent. 0 means using default. 870 private int mInitialScaleInPercent = 0; 871 872 // Whether or not a scroll event should be sent to webkit. This is only set 873 // to false when restoring the scroll position. 874 private boolean mSendScrollEvent = true; 875 876 private int mSnapScrollMode = SNAP_NONE; 877 private static final int SNAP_NONE = 0; 878 private static final int SNAP_LOCK = 1; // not a separate state 879 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 880 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 881 private boolean mSnapPositive; 882 883 // keep these in sync with their counterparts in WebView.cpp 884 private static final int DRAW_EXTRAS_NONE = 0; 885 private static final int DRAW_EXTRAS_FIND = 1; 886 private static final int DRAW_EXTRAS_SELECTION = 2; 887 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 888 889 // keep this in sync with WebCore:ScrollbarMode in WebKit 890 private static final int SCROLLBAR_AUTO = 0; 891 private static final int SCROLLBAR_ALWAYSOFF = 1; 892 // as we auto fade scrollbar, this is ignored. 893 private static final int SCROLLBAR_ALWAYSON = 2; 894 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 895 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 896 897 // constants for determining script injection strategy 898 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 899 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 900 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 901 902 // the alias via which accessibility JavaScript interface is exposed 903 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 904 905 // Template for JavaScript that injects a screen-reader. 906 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 907 "javascript:(function() {" + 908 " var chooser = document.createElement('script');" + 909 " chooser.type = 'text/javascript';" + 910 " chooser.src = '%1s';" + 911 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 912 " })();"; 913 914 // Regular expression that matches the "axs" URL parameter. 915 // The value of 0 means the accessibility script is opted out 916 // The value of 1 means the accessibility script is already injected 917 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 918 919 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 920 private TextToSpeech mTextToSpeech; 921 922 // variable to cache the above pattern in case accessibility is enabled. 923 private Pattern mMatchAxsUrlParameterPattern; 924 925 /** 926 * Max distance to overscroll by in pixels. 927 * This how far content can be pulled beyond its normal bounds by the user. 928 */ 929 private int mOverscrollDistance; 930 931 /** 932 * Max distance to overfling by in pixels. 933 * This is how far flinged content can move beyond the end of its normal bounds. 934 */ 935 private int mOverflingDistance; 936 937 private OverScrollGlow mOverScrollGlow; 938 939 // Used to match key downs and key ups 940 private Vector<Integer> mKeysPressed; 941 942 /* package */ static boolean mLogEvent = true; 943 944 // for event log 945 private long mLastTouchUpTime = 0; 946 947 private WebViewCore.AutoFillData mAutoFillData; 948 949 private static boolean sNotificationsEnabled = true; 950 951 /** 952 * URI scheme for telephone number 953 */ 954 public static final String SCHEME_TEL = "tel:"; 955 /** 956 * URI scheme for email address 957 */ 958 public static final String SCHEME_MAILTO = "mailto:"; 959 /** 960 * URI scheme for map address 961 */ 962 public static final String SCHEME_GEO = "geo:0,0?q="; 963 964 private int mBackgroundColor = Color.WHITE; 965 966 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 967 private int mAutoScrollX = 0; 968 private int mAutoScrollY = 0; 969 private int mMinAutoScrollX = 0; 970 private int mMaxAutoScrollX = 0; 971 private int mMinAutoScrollY = 0; 972 private int mMaxAutoScrollY = 0; 973 private Rect mScrollingLayerBounds = new Rect(); 974 private boolean mSentAutoScrollMessage = false; 975 976 // Temporary hack to work around the context removal upon memory pressure 977 private static boolean mIncrementEGLContextHack = false; 978 979 // used for serializing asynchronously handled touch events. 980 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 981 982 // Used to track whether picture updating was paused due to a window focus change. 983 private boolean mPictureUpdatePausedForFocusChange = false; 984 985 // Used to notify listeners of a new picture. 986 private PictureListener mPictureListener; 987 /** 988 * Interface to listen for new pictures as they change. 989 * @deprecated This interface is now obsolete. 990 */ 991 @Deprecated 992 public interface PictureListener { 993 /** 994 * Notify the listener that the picture has changed. 995 * @param view The WebView that owns the picture. 996 * @param picture The new picture. 997 * @deprecated Due to internal changes, the picture does not include 998 * composited layers such as fixed position elements or scrollable divs. 999 * While the PictureListener API can still be used to detect changes in 1000 * the WebView content, you are advised against its usage until a replacement 1001 * is provided in a future Android release 1002 */ 1003 @Deprecated 1004 public void onNewPicture(WebView view, Picture picture); 1005 } 1006 1007 public static class HitTestResult { 1008 /** 1009 * Default HitTestResult, where the target is unknown 1010 */ 1011 public static final int UNKNOWN_TYPE = 0; 1012 /** 1013 * @deprecated This type is no longer used. 1014 */ 1015 @Deprecated 1016 public static final int ANCHOR_TYPE = 1; 1017 /** 1018 * HitTestResult for hitting a phone number 1019 */ 1020 public static final int PHONE_TYPE = 2; 1021 /** 1022 * HitTestResult for hitting a map address 1023 */ 1024 public static final int GEO_TYPE = 3; 1025 /** 1026 * HitTestResult for hitting an email address 1027 */ 1028 public static final int EMAIL_TYPE = 4; 1029 /** 1030 * HitTestResult for hitting an HTML::img tag 1031 */ 1032 public static final int IMAGE_TYPE = 5; 1033 /** 1034 * @deprecated This type is no longer used. 1035 */ 1036 @Deprecated 1037 public static final int IMAGE_ANCHOR_TYPE = 6; 1038 /** 1039 * HitTestResult for hitting a HTML::a tag with src=http 1040 */ 1041 public static final int SRC_ANCHOR_TYPE = 7; 1042 /** 1043 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 1044 */ 1045 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 1046 /** 1047 * HitTestResult for hitting an edit text area 1048 */ 1049 public static final int EDIT_TEXT_TYPE = 9; 1050 1051 private int mType; 1052 private String mExtra; 1053 1054 HitTestResult() { 1055 mType = UNKNOWN_TYPE; 1056 } 1057 1058 private void setType(int type) { 1059 mType = type; 1060 } 1061 1062 private void setExtra(String extra) { 1063 mExtra = extra; 1064 } 1065 1066 /** 1067 * Gets the type of the hit test result. 1068 * @return See the XXX_TYPE constants defined in this class. 1069 */ 1070 public int getType() { 1071 return mType; 1072 } 1073 1074 /** 1075 * Gets additional type-dependant information about the result, see 1076 * {@link WebView#getHitTestResult()} for details. 1077 * @return may either be null or contain extra information about this result. 1078 */ 1079 public String getExtra() { 1080 return mExtra; 1081 } 1082 } 1083 1084 /** 1085 * Construct a new WebView with a Context object. 1086 * @param context A Context object used to access application assets. 1087 */ 1088 public WebView(Context context) { 1089 this(context, null); 1090 } 1091 1092 /** 1093 * Construct a new WebView with layout parameters. 1094 * @param context A Context object used to access application assets. 1095 * @param attrs An AttributeSet passed to our parent. 1096 */ 1097 public WebView(Context context, AttributeSet attrs) { 1098 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1099 } 1100 1101 /** 1102 * Construct a new WebView with layout parameters and a default style. 1103 * @param context A Context object used to access application assets. 1104 * @param attrs An AttributeSet passed to our parent. 1105 * @param defStyle The default style resource ID. 1106 */ 1107 public WebView(Context context, AttributeSet attrs, int defStyle) { 1108 this(context, attrs, defStyle, false); 1109 } 1110 1111 /** 1112 * Construct a new WebView with layout parameters and a default style. 1113 * @param context A Context object used to access application assets. 1114 * @param attrs An AttributeSet passed to our parent. 1115 * @param defStyle The default style resource ID. 1116 * @param privateBrowsing If true the web view will be initialized in private mode. 1117 */ 1118 public WebView(Context context, AttributeSet attrs, int defStyle, 1119 boolean privateBrowsing) { 1120 this(context, attrs, defStyle, null, privateBrowsing); 1121 } 1122 1123 /** 1124 * Construct a new WebView with layout parameters, a default style and a set 1125 * of custom Javscript interfaces to be added to the WebView at initialization 1126 * time. This guarantees that these interfaces will be available when the JS 1127 * context is initialized. 1128 * @param context A Context object used to access application assets. 1129 * @param attrs An AttributeSet passed to our parent. 1130 * @param defStyle The default style resource ID. 1131 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1132 * object implementing those interfaces, as values. 1133 * @param privateBrowsing If true the web view will be initialized in private mode. 1134 * @hide This is an implementation detail. 1135 */ 1136 protected WebView(Context context, AttributeSet attrs, int defStyle, 1137 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1138 super(context, attrs, defStyle); 1139 checkThread(); 1140 1141 if (context == null) { 1142 throw new IllegalArgumentException("Invalid context argument"); 1143 } 1144 1145 // Used by the chrome stack to find application paths 1146 JniUtil.setContext(context); 1147 1148 mCallbackProxy = new CallbackProxy(context, this); 1149 mViewManager = new ViewManager(this); 1150 L10nUtils.setApplicationContext(context.getApplicationContext()); 1151 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1152 mDatabase = WebViewDatabase.getInstance(context); 1153 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1154 mZoomManager = new ZoomManager(this, mCallbackProxy); 1155 1156 /* The init method must follow the creation of certain member variables, 1157 * such as the mZoomManager. 1158 */ 1159 init(); 1160 setupPackageListener(context); 1161 setupProxyListener(context); 1162 updateMultiTouchSupport(context); 1163 1164 if (privateBrowsing) { 1165 startPrivateBrowsing(); 1166 } 1167 1168 mAutoFillData = new WebViewCore.AutoFillData(); 1169 } 1170 1171 private static class ProxyReceiver extends BroadcastReceiver { 1172 @Override 1173 public void onReceive(Context context, Intent intent) { 1174 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1175 handleProxyBroadcast(intent); 1176 } 1177 } 1178 } 1179 1180 /* 1181 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1182 */ 1183 private static ProxyReceiver sProxyReceiver; 1184 1185 /* 1186 * @param context This method expects this to be a valid context 1187 */ 1188 private static synchronized void setupProxyListener(Context context) { 1189 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1190 return; 1191 } 1192 IntentFilter filter = new IntentFilter(); 1193 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1194 sProxyReceiver = new ProxyReceiver(); 1195 Intent currentProxy = context.getApplicationContext().registerReceiver( 1196 sProxyReceiver, filter); 1197 if (currentProxy != null) { 1198 handleProxyBroadcast(currentProxy); 1199 } 1200 } 1201 1202 /* 1203 * @param context This method expects this to be a valid context 1204 */ 1205 private static synchronized void disableProxyListener(Context context) { 1206 if (sProxyReceiver == null) 1207 return; 1208 1209 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1210 sProxyReceiver = null; 1211 } 1212 1213 private static void handleProxyBroadcast(Intent intent) { 1214 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1215 if (proxyProperties == null || proxyProperties.getHost() == null) { 1216 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1217 return; 1218 } 1219 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1220 } 1221 1222 /* 1223 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1224 * or ACTION_PACKAGE_REMOVED. 1225 */ 1226 private static boolean sPackageInstallationReceiverAdded = false; 1227 1228 /* 1229 * A set of Google packages we monitor for the 1230 * navigator.isApplicationInstalled() API. Add additional packages as 1231 * needed. 1232 */ 1233 private static Set<String> sGoogleApps; 1234 static { 1235 sGoogleApps = new HashSet<String>(); 1236 sGoogleApps.add("com.google.android.youtube"); 1237 } 1238 1239 private static class PackageListener extends BroadcastReceiver { 1240 @Override 1241 public void onReceive(Context context, Intent intent) { 1242 final String action = intent.getAction(); 1243 final String packageName = intent.getData().getSchemeSpecificPart(); 1244 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1245 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1246 // if it is replacing, refreshPlugins() when adding 1247 return; 1248 } 1249 1250 if (sGoogleApps.contains(packageName)) { 1251 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1252 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1253 } else { 1254 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1255 } 1256 } 1257 1258 PluginManager pm = PluginManager.getInstance(context); 1259 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1260 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1261 } 1262 } 1263 } 1264 1265 private void setupPackageListener(Context context) { 1266 1267 /* 1268 * we must synchronize the instance check and the creation of the 1269 * receiver to ensure that only ONE receiver exists for all WebView 1270 * instances. 1271 */ 1272 synchronized (WebView.class) { 1273 1274 // if the receiver already exists then we do not need to register it 1275 // again 1276 if (sPackageInstallationReceiverAdded) { 1277 return; 1278 } 1279 1280 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1281 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1282 filter.addDataScheme("package"); 1283 BroadcastReceiver packageListener = new PackageListener(); 1284 context.getApplicationContext().registerReceiver(packageListener, filter); 1285 sPackageInstallationReceiverAdded = true; 1286 } 1287 1288 // check if any of the monitored apps are already installed 1289 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1290 1291 @Override 1292 protected Set<String> doInBackground(Void... unused) { 1293 Set<String> installedPackages = new HashSet<String>(); 1294 PackageManager pm = mContext.getPackageManager(); 1295 for (String name : sGoogleApps) { 1296 try { 1297 pm.getPackageInfo(name, 1298 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1299 installedPackages.add(name); 1300 } catch (PackageManager.NameNotFoundException e) { 1301 // package not found 1302 } 1303 } 1304 return installedPackages; 1305 } 1306 1307 // Executes on the UI thread 1308 @Override 1309 protected void onPostExecute(Set<String> installedPackages) { 1310 if (mWebViewCore != null) { 1311 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1312 } 1313 } 1314 }; 1315 task.execute(); 1316 } 1317 1318 void updateMultiTouchSupport(Context context) { 1319 mZoomManager.updateMultiTouchSupport(context); 1320 } 1321 1322 private void init() { 1323 OnTrimMemoryListener.init(getContext()); 1324 sDisableNavcache = nativeDisableNavcache(); 1325 1326 setWillNotDraw(false); 1327 setFocusable(true); 1328 setFocusableInTouchMode(true); 1329 setClickable(true); 1330 setLongClickable(true); 1331 1332 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1333 int slop = configuration.getScaledTouchSlop(); 1334 mTouchSlopSquare = slop * slop; 1335 slop = configuration.getScaledDoubleTapSlop(); 1336 mDoubleTapSlopSquare = slop * slop; 1337 final float density = getContext().getResources().getDisplayMetrics().density; 1338 // use one line height, 16 based on our current default font, for how 1339 // far we allow a touch be away from the edge of a link 1340 mNavSlop = (int) (16 * density); 1341 mZoomManager.init(density); 1342 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1343 1344 // Compute the inverse of the density squared. 1345 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1346 1347 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1348 mOverflingDistance = configuration.getScaledOverflingDistance(); 1349 1350 setScrollBarStyle(super.getScrollBarStyle()); 1351 // Initially use a size of two, since the user is likely to only hold 1352 // down two keys at a time (shift + another key) 1353 mKeysPressed = new Vector<Integer>(2); 1354 mHTML5VideoViewProxy = null ; 1355 } 1356 1357 @Override 1358 public boolean shouldDelayChildPressedState() { 1359 return true; 1360 } 1361 1362 /** 1363 * Adds accessibility APIs to JavaScript. 1364 * 1365 * Note: This method is responsible to performing the necessary 1366 * check if the accessibility APIs should be exposed. 1367 */ 1368 private void addAccessibilityApisToJavaScript() { 1369 if (AccessibilityManager.getInstance(mContext).isEnabled() 1370 && getSettings().getJavaScriptEnabled()) { 1371 // exposing the TTS for now ... 1372 final Context ctx = getContext(); 1373 if (ctx != null) { 1374 final String packageName = ctx.getPackageName(); 1375 if (packageName != null) { 1376 mTextToSpeech = new TextToSpeech(getContext(), null, null, 1377 packageName + ".**webview**", true); 1378 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1379 } 1380 } 1381 } 1382 } 1383 1384 /** 1385 * Removes accessibility APIs from JavaScript. 1386 */ 1387 private void removeAccessibilityApisFromJavaScript() { 1388 // exposing the TTS for now ... 1389 if (mTextToSpeech != null) { 1390 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1391 mTextToSpeech.shutdown(); 1392 mTextToSpeech = null; 1393 } 1394 } 1395 1396 @Override 1397 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1398 super.onInitializeAccessibilityNodeInfo(info); 1399 info.setScrollable(isScrollableForAccessibility()); 1400 } 1401 1402 @Override 1403 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1404 super.onInitializeAccessibilityEvent(event); 1405 event.setScrollable(isScrollableForAccessibility()); 1406 event.setScrollX(mScrollX); 1407 event.setScrollY(mScrollY); 1408 final int convertedContentWidth = contentToViewX(getContentWidth()); 1409 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1410 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1411 final int convertedContentHeight = contentToViewY(getContentHeight()); 1412 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1413 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1414 } 1415 1416 private boolean isScrollableForAccessibility() { 1417 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1418 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1419 } 1420 1421 @Override 1422 public void setOverScrollMode(int mode) { 1423 super.setOverScrollMode(mode); 1424 if (mode != OVER_SCROLL_NEVER) { 1425 if (mOverScrollGlow == null) { 1426 mOverScrollGlow = new OverScrollGlow(this); 1427 } 1428 } else { 1429 mOverScrollGlow = null; 1430 } 1431 } 1432 1433 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1434 final float density = mContext.getResources().getDisplayMetrics().density 1435 * 100 / zoomDensity; 1436 updateDefaultZoomDensity(density); 1437 } 1438 1439 /* package */ void updateDefaultZoomDensity(float density) { 1440 mNavSlop = (int) (16 * density); 1441 mZoomManager.updateDefaultZoomDensity(density); 1442 } 1443 1444 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1445 String password, final Message resumeMsg) { 1446 boolean rVal = false; 1447 if (resumeMsg == null) { 1448 // null resumeMsg implies saving password silently 1449 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1450 } else { 1451 final Message remember = mPrivateHandler.obtainMessage( 1452 REMEMBER_PASSWORD); 1453 remember.getData().putString("host", schemePlusHost); 1454 remember.getData().putString("username", username); 1455 remember.getData().putString("password", password); 1456 remember.obj = resumeMsg; 1457 1458 final Message neverRemember = mPrivateHandler.obtainMessage( 1459 NEVER_REMEMBER_PASSWORD); 1460 neverRemember.getData().putString("host", schemePlusHost); 1461 neverRemember.getData().putString("username", username); 1462 neverRemember.getData().putString("password", password); 1463 neverRemember.obj = resumeMsg; 1464 1465 new AlertDialog.Builder(getContext()) 1466 .setTitle(com.android.internal.R.string.save_password_label) 1467 .setMessage(com.android.internal.R.string.save_password_message) 1468 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1469 new DialogInterface.OnClickListener() { 1470 @Override 1471 public void onClick(DialogInterface dialog, int which) { 1472 resumeMsg.sendToTarget(); 1473 } 1474 }) 1475 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1476 new DialogInterface.OnClickListener() { 1477 @Override 1478 public void onClick(DialogInterface dialog, int which) { 1479 remember.sendToTarget(); 1480 } 1481 }) 1482 .setNegativeButton(com.android.internal.R.string.save_password_never, 1483 new DialogInterface.OnClickListener() { 1484 @Override 1485 public void onClick(DialogInterface dialog, int which) { 1486 neverRemember.sendToTarget(); 1487 } 1488 }) 1489 .setOnCancelListener(new OnCancelListener() { 1490 @Override 1491 public void onCancel(DialogInterface dialog) { 1492 resumeMsg.sendToTarget(); 1493 } 1494 }).show(); 1495 // Return true so that WebViewCore will pause while the dialog is 1496 // up. 1497 rVal = true; 1498 } 1499 return rVal; 1500 } 1501 1502 @Override 1503 public void setScrollBarStyle(int style) { 1504 if (style == View.SCROLLBARS_INSIDE_INSET 1505 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1506 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1507 } else { 1508 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1509 } 1510 super.setScrollBarStyle(style); 1511 } 1512 1513 /** 1514 * Specify whether the horizontal scrollbar has overlay style. 1515 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1516 */ 1517 public void setHorizontalScrollbarOverlay(boolean overlay) { 1518 checkThread(); 1519 mOverlayHorizontalScrollbar = overlay; 1520 } 1521 1522 /** 1523 * Specify whether the vertical scrollbar has overlay style. 1524 * @param overlay TRUE if vertical scrollbar should have overlay style. 1525 */ 1526 public void setVerticalScrollbarOverlay(boolean overlay) { 1527 checkThread(); 1528 mOverlayVerticalScrollbar = overlay; 1529 } 1530 1531 /** 1532 * Return whether horizontal scrollbar has overlay style 1533 * @return TRUE if horizontal scrollbar has overlay style. 1534 */ 1535 public boolean overlayHorizontalScrollbar() { 1536 checkThread(); 1537 return mOverlayHorizontalScrollbar; 1538 } 1539 1540 /** 1541 * Return whether vertical scrollbar has overlay style 1542 * @return TRUE if vertical scrollbar has overlay style. 1543 */ 1544 public boolean overlayVerticalScrollbar() { 1545 checkThread(); 1546 return mOverlayVerticalScrollbar; 1547 } 1548 1549 /* 1550 * Return the width of the view where the content of WebView should render 1551 * to. 1552 * Note: this can be called from WebCoreThread. 1553 */ 1554 /* package */ int getViewWidth() { 1555 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1556 return getWidth(); 1557 } else { 1558 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1559 } 1560 } 1561 1562 /** 1563 * returns the height of the titlebarview (if any). Does not care about 1564 * scrolling 1565 * @hide 1566 */ 1567 protected int getTitleHeight() { 1568 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1569 } 1570 1571 /** 1572 * Return the amount of the titlebarview (if any) that is visible 1573 * 1574 * @deprecated This method is now obsolete. 1575 */ 1576 @Deprecated 1577 public int getVisibleTitleHeight() { 1578 checkThread(); 1579 return getVisibleTitleHeightImpl(); 1580 } 1581 1582 private int getVisibleTitleHeightImpl() { 1583 // need to restrict mScrollY due to over scroll 1584 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1585 getOverlappingActionModeHeight()); 1586 } 1587 1588 private int mCachedOverlappingActionModeHeight = -1; 1589 1590 private int getOverlappingActionModeHeight() { 1591 if (mFindCallback == null) { 1592 return 0; 1593 } 1594 if (mCachedOverlappingActionModeHeight < 0) { 1595 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1596 mCachedOverlappingActionModeHeight = Math.max(0, 1597 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1598 } 1599 return mCachedOverlappingActionModeHeight; 1600 } 1601 1602 /* 1603 * Return the height of the view where the content of WebView should render 1604 * to. Note that this excludes mTitleBar, if there is one. 1605 * Note: this can be called from WebCoreThread. 1606 */ 1607 /* package */ int getViewHeight() { 1608 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1609 } 1610 1611 int getViewHeightWithTitle() { 1612 int height = getHeight(); 1613 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1614 height -= getHorizontalScrollbarHeight(); 1615 } 1616 return height; 1617 } 1618 1619 /** 1620 * @return The SSL certificate for the main top-level page or null if 1621 * there is no certificate (the site is not secure). 1622 */ 1623 public SslCertificate getCertificate() { 1624 checkThread(); 1625 return mCertificate; 1626 } 1627 1628 /** 1629 * Sets the SSL certificate for the main top-level page. 1630 */ 1631 public void setCertificate(SslCertificate certificate) { 1632 checkThread(); 1633 if (DebugFlags.WEB_VIEW) { 1634 Log.v(LOGTAG, "setCertificate=" + certificate); 1635 } 1636 // here, the certificate can be null (if the site is not secure) 1637 mCertificate = certificate; 1638 } 1639 1640 //------------------------------------------------------------------------- 1641 // Methods called by activity 1642 //------------------------------------------------------------------------- 1643 1644 /** 1645 * Save the username and password for a particular host in the WebView's 1646 * internal database. 1647 * @param host The host that required the credentials. 1648 * @param username The username for the given host. 1649 * @param password The password for the given host. 1650 */ 1651 public void savePassword(String host, String username, String password) { 1652 checkThread(); 1653 mDatabase.setUsernamePassword(host, username, password); 1654 } 1655 1656 /** 1657 * Set the HTTP authentication credentials for a given host and realm. 1658 * 1659 * @param host The host for the credentials. 1660 * @param realm The realm for the credentials. 1661 * @param username The username for the password. If it is null, it means 1662 * password can't be saved. 1663 * @param password The password 1664 */ 1665 public void setHttpAuthUsernamePassword(String host, String realm, 1666 String username, String password) { 1667 checkThread(); 1668 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1669 } 1670 1671 /** 1672 * Retrieve the HTTP authentication username and password for a given 1673 * host & realm pair 1674 * 1675 * @param host The host for which the credentials apply. 1676 * @param realm The realm for which the credentials apply. 1677 * @return String[] if found, String[0] is username, which can be null and 1678 * String[1] is password. Return null if it can't find anything. 1679 */ 1680 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1681 checkThread(); 1682 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1683 } 1684 1685 /** 1686 * Remove Find or Select ActionModes, if active. 1687 */ 1688 private void clearActionModes() { 1689 if (mSelectCallback != null) { 1690 mSelectCallback.finish(); 1691 } 1692 if (mFindCallback != null) { 1693 mFindCallback.finish(); 1694 } 1695 } 1696 1697 /** 1698 * Called to clear state when moving from one page to another, or changing 1699 * in some other way that makes elements associated with the current page 1700 * (such as WebTextView or ActionModes) no longer relevant. 1701 */ 1702 private void clearHelpers() { 1703 clearTextEntry(); 1704 clearActionModes(); 1705 dismissFullScreenMode(); 1706 cancelSelectDialog(); 1707 } 1708 1709 private void cancelSelectDialog() { 1710 if (mListBoxDialog != null) { 1711 mListBoxDialog.cancel(); 1712 mListBoxDialog = null; 1713 } 1714 } 1715 1716 /** 1717 * Destroy the internal state of the WebView. This method should be called 1718 * after the WebView has been removed from the view system. No other 1719 * methods may be called on a WebView after destroy. 1720 */ 1721 public void destroy() { 1722 checkThread(); 1723 destroyImpl(); 1724 } 1725 1726 private void destroyImpl() { 1727 clearHelpers(); 1728 if (mListBoxDialog != null) { 1729 mListBoxDialog.dismiss(); 1730 mListBoxDialog = null; 1731 } 1732 // remove so that it doesn't cause events 1733 if (mWebTextView != null) { 1734 mWebTextView.remove(); 1735 mWebTextView = null; 1736 } 1737 if (mNativeClass != 0) nativeStopGL(); 1738 if (mWebViewCore != null) { 1739 // Set the handlers to null before destroying WebViewCore so no 1740 // more messages will be posted. 1741 mCallbackProxy.setWebViewClient(null); 1742 mCallbackProxy.setWebChromeClient(null); 1743 // Tell WebViewCore to destroy itself 1744 synchronized (this) { 1745 WebViewCore webViewCore = mWebViewCore; 1746 mWebViewCore = null; // prevent using partial webViewCore 1747 webViewCore.destroy(); 1748 } 1749 // Remove any pending messages that might not be serviced yet. 1750 mPrivateHandler.removeCallbacksAndMessages(null); 1751 mCallbackProxy.removeCallbacksAndMessages(null); 1752 // Wake up the WebCore thread just in case it is waiting for a 1753 // JavaScript dialog. 1754 synchronized (mCallbackProxy) { 1755 mCallbackProxy.notify(); 1756 } 1757 } 1758 if (mNativeClass != 0) { 1759 nativeDestroy(); 1760 mNativeClass = 0; 1761 } 1762 } 1763 1764 /** 1765 * Enables platform notifications of data state and proxy changes. 1766 * Notifications are enabled by default. 1767 * 1768 * @deprecated This method is now obsolete. 1769 */ 1770 @Deprecated 1771 public static void enablePlatformNotifications() { 1772 checkThread(); 1773 synchronized (WebView.class) { 1774 Network.enablePlatformNotifications(); 1775 sNotificationsEnabled = true; 1776 Context context = JniUtil.getContext(); 1777 if (context != null) 1778 setupProxyListener(context); 1779 } 1780 } 1781 1782 /** 1783 * Disables platform notifications of data state and proxy changes. 1784 * Notifications are enabled by default. 1785 * 1786 * @deprecated This method is now obsolete. 1787 */ 1788 @Deprecated 1789 public static void disablePlatformNotifications() { 1790 checkThread(); 1791 synchronized (WebView.class) { 1792 Network.disablePlatformNotifications(); 1793 sNotificationsEnabled = false; 1794 Context context = JniUtil.getContext(); 1795 if (context != null) 1796 disableProxyListener(context); 1797 } 1798 } 1799 1800 /** 1801 * Sets JavaScript engine flags. 1802 * 1803 * @param flags JS engine flags in a String 1804 * 1805 * @hide This is an implementation detail. 1806 */ 1807 public void setJsFlags(String flags) { 1808 checkThread(); 1809 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1810 } 1811 1812 /** 1813 * Inform WebView of the network state. This is used to set 1814 * the JavaScript property window.navigator.isOnline and 1815 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1816 * @param networkUp boolean indicating if network is available 1817 */ 1818 public void setNetworkAvailable(boolean networkUp) { 1819 checkThread(); 1820 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1821 networkUp ? 1 : 0, 0); 1822 } 1823 1824 /** 1825 * Inform WebView about the current network type. 1826 * {@hide} 1827 */ 1828 public void setNetworkType(String type, String subtype) { 1829 checkThread(); 1830 Map<String, String> map = new HashMap<String, String>(); 1831 map.put("type", type); 1832 map.put("subtype", subtype); 1833 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1834 } 1835 /** 1836 * Save the state of this WebView used in 1837 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1838 * method no longer stores the display data for this WebView. The previous 1839 * behavior could potentially leak files if {@link #restoreState} was never 1840 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1841 * and restoring the display data. 1842 * @param outState The Bundle to store the WebView state. 1843 * @return The same copy of the back/forward list used to save the state. If 1844 * saveState fails, the returned list will be null. 1845 * @see #savePicture 1846 * @see #restorePicture 1847 */ 1848 public WebBackForwardList saveState(Bundle outState) { 1849 checkThread(); 1850 if (outState == null) { 1851 return null; 1852 } 1853 // We grab a copy of the back/forward list because a client of WebView 1854 // may have invalidated the history list by calling clearHistory. 1855 WebBackForwardList list = copyBackForwardList(); 1856 final int currentIndex = list.getCurrentIndex(); 1857 final int size = list.getSize(); 1858 // We should fail saving the state if the list is empty or the index is 1859 // not in a valid range. 1860 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1861 return null; 1862 } 1863 outState.putInt("index", currentIndex); 1864 // FIXME: This should just be a byte[][] instead of ArrayList but 1865 // Parcel.java does not have the code to handle multi-dimensional 1866 // arrays. 1867 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1868 for (int i = 0; i < size; i++) { 1869 WebHistoryItem item = list.getItemAtIndex(i); 1870 if (null == item) { 1871 // FIXME: this shouldn't happen 1872 // need to determine how item got set to null 1873 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1874 return null; 1875 } 1876 byte[] data = item.getFlattenedData(); 1877 if (data == null) { 1878 // It would be very odd to not have any data for a given history 1879 // item. And we will fail to rebuild the history list without 1880 // flattened data. 1881 return null; 1882 } 1883 history.add(data); 1884 } 1885 outState.putSerializable("history", history); 1886 if (mCertificate != null) { 1887 outState.putBundle("certificate", 1888 SslCertificate.saveState(mCertificate)); 1889 } 1890 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1891 mZoomManager.saveZoomState(outState); 1892 return list; 1893 } 1894 1895 /** 1896 * Save the current display data to the Bundle given. Used in conjunction 1897 * with {@link #saveState}. 1898 * @param b A Bundle to store the display data. 1899 * @param dest The file to store the serialized picture data. Will be 1900 * overwritten with this WebView's picture data. 1901 * @return True if the picture was successfully saved. 1902 * @deprecated This method is now obsolete. 1903 */ 1904 @Deprecated 1905 public boolean savePicture(Bundle b, final File dest) { 1906 checkThread(); 1907 if (dest == null || b == null) { 1908 return false; 1909 } 1910 final Picture p = capturePicture(); 1911 // Use a temporary file while writing to ensure the destination file 1912 // contains valid data. 1913 final File temp = new File(dest.getPath() + ".writing"); 1914 new Thread(new Runnable() { 1915 @Override 1916 public void run() { 1917 FileOutputStream out = null; 1918 try { 1919 out = new FileOutputStream(temp); 1920 p.writeToStream(out); 1921 // Writing the picture succeeded, rename the temporary file 1922 // to the destination. 1923 temp.renameTo(dest); 1924 } catch (Exception e) { 1925 // too late to do anything about it. 1926 } finally { 1927 if (out != null) { 1928 try { 1929 out.close(); 1930 } catch (Exception e) { 1931 // Can't do anything about that 1932 } 1933 } 1934 temp.delete(); 1935 } 1936 } 1937 }).start(); 1938 // now update the bundle 1939 b.putInt("scrollX", mScrollX); 1940 b.putInt("scrollY", mScrollY); 1941 mZoomManager.saveZoomState(b); 1942 return true; 1943 } 1944 1945 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1946 int sx = b.getInt("scrollX", 0); 1947 int sy = b.getInt("scrollY", 0); 1948 1949 mDrawHistory = true; 1950 mHistoryPicture = p; 1951 1952 mScrollX = sx; 1953 mScrollY = sy; 1954 mZoomManager.restoreZoomState(b); 1955 final float scale = mZoomManager.getScale(); 1956 mHistoryWidth = Math.round(p.getWidth() * scale); 1957 mHistoryHeight = Math.round(p.getHeight() * scale); 1958 1959 invalidate(); 1960 } 1961 1962 /** 1963 * Restore the display data that was save in {@link #savePicture}. Used in 1964 * conjunction with {@link #restoreState}. 1965 * 1966 * Note that this will not work if the WebView is hardware accelerated. 1967 * @param b A Bundle containing the saved display data. 1968 * @param src The file where the picture data was stored. 1969 * @return True if the picture was successfully restored. 1970 * @deprecated This method is now obsolete. 1971 */ 1972 @Deprecated 1973 public boolean restorePicture(Bundle b, File src) { 1974 checkThread(); 1975 if (src == null || b == null) { 1976 return false; 1977 } 1978 if (!src.exists()) { 1979 return false; 1980 } 1981 try { 1982 final FileInputStream in = new FileInputStream(src); 1983 final Bundle copy = new Bundle(b); 1984 new Thread(new Runnable() { 1985 @Override 1986 public void run() { 1987 try { 1988 final Picture p = Picture.createFromStream(in); 1989 if (p != null) { 1990 // Post a runnable on the main thread to update the 1991 // history picture fields. 1992 mPrivateHandler.post(new Runnable() { 1993 @Override 1994 public void run() { 1995 restoreHistoryPictureFields(p, copy); 1996 } 1997 }); 1998 } 1999 } finally { 2000 try { 2001 in.close(); 2002 } catch (Exception e) { 2003 // Nothing we can do now. 2004 } 2005 } 2006 } 2007 }).start(); 2008 } catch (FileNotFoundException e){ 2009 e.printStackTrace(); 2010 } 2011 return true; 2012 } 2013 2014 /** 2015 * Saves the view data to the output stream. The output is highly 2016 * version specific, and may not be able to be loaded by newer versions 2017 * of WebView. 2018 * @param stream The {@link OutputStream} to save to 2019 * @return True if saved successfully 2020 * @hide 2021 */ 2022 public boolean saveViewState(OutputStream stream) { 2023 try { 2024 return ViewStateSerializer.serializeViewState(stream, this); 2025 } catch (IOException e) { 2026 Log.w(LOGTAG, "Failed to saveViewState", e); 2027 } 2028 return false; 2029 } 2030 2031 /** 2032 * Loads the view data from the input stream. See 2033 * {@link #saveViewState(OutputStream)} for more information. 2034 * @param stream The {@link InputStream} to load from 2035 * @return True if loaded successfully 2036 * @hide 2037 */ 2038 public boolean loadViewState(InputStream stream) { 2039 try { 2040 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 2041 mBlockWebkitViewMessages = true; 2042 setNewPicture(mLoadedPicture, true); 2043 mLoadedPicture.mViewState = null; 2044 return true; 2045 } catch (IOException e) { 2046 Log.w(LOGTAG, "Failed to loadViewState", e); 2047 } 2048 return false; 2049 } 2050 2051 /** 2052 * Clears the view state set with {@link #loadViewState(InputStream)}. 2053 * This WebView will then switch to showing the content from webkit 2054 * @hide 2055 */ 2056 public void clearViewState() { 2057 mBlockWebkitViewMessages = false; 2058 mLoadedPicture = null; 2059 invalidate(); 2060 } 2061 2062 /** 2063 * Restore the state of this WebView from the given map used in 2064 * {@link android.app.Activity#onRestoreInstanceState}. This method should 2065 * be called to restore the state of the WebView before using the object. If 2066 * it is called after the WebView has had a chance to build state (load 2067 * pages, create a back/forward list, etc.) there may be undesirable 2068 * side-effects. Please note that this method no longer restores the 2069 * display data for this WebView. See {@link #savePicture} and {@link 2070 * #restorePicture} for saving and restoring the display data. 2071 * @param inState The incoming Bundle of state. 2072 * @return The restored back/forward list or null if restoreState failed. 2073 * @see #savePicture 2074 * @see #restorePicture 2075 */ 2076 public WebBackForwardList restoreState(Bundle inState) { 2077 checkThread(); 2078 WebBackForwardList returnList = null; 2079 if (inState == null) { 2080 return returnList; 2081 } 2082 if (inState.containsKey("index") && inState.containsKey("history")) { 2083 mCertificate = SslCertificate.restoreState( 2084 inState.getBundle("certificate")); 2085 2086 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2087 final int index = inState.getInt("index"); 2088 // We can't use a clone of the list because we need to modify the 2089 // shared copy, so synchronize instead to prevent concurrent 2090 // modifications. 2091 synchronized (list) { 2092 final List<byte[]> history = 2093 (List<byte[]>) inState.getSerializable("history"); 2094 final int size = history.size(); 2095 // Check the index bounds so we don't crash in native code while 2096 // restoring the history index. 2097 if (index < 0 || index >= size) { 2098 return null; 2099 } 2100 for (int i = 0; i < size; i++) { 2101 byte[] data = history.remove(0); 2102 if (data == null) { 2103 // If we somehow have null data, we cannot reconstruct 2104 // the item and thus our history list cannot be rebuilt. 2105 return null; 2106 } 2107 WebHistoryItem item = new WebHistoryItem(data); 2108 list.addHistoryItem(item); 2109 } 2110 // Grab the most recent copy to return to the caller. 2111 returnList = copyBackForwardList(); 2112 // Update the copy to have the correct index. 2113 returnList.setCurrentIndex(index); 2114 } 2115 // Restore private browsing setting. 2116 if (inState.getBoolean("privateBrowsingEnabled")) { 2117 getSettings().setPrivateBrowsingEnabled(true); 2118 } 2119 mZoomManager.restoreZoomState(inState); 2120 // Remove all pending messages because we are restoring previous 2121 // state. 2122 mWebViewCore.removeMessages(); 2123 // Send a restore state message. 2124 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2125 } 2126 return returnList; 2127 } 2128 2129 /** 2130 * Load the given URL with the specified additional HTTP headers. 2131 * @param url The URL of the resource to load. 2132 * @param additionalHttpHeaders The additional headers to be used in the 2133 * HTTP request for this URL, specified as a map from name to 2134 * value. Note that if this map contains any of the headers 2135 * that are set by default by the WebView, such as those 2136 * controlling caching, accept types or the User-Agent, their 2137 * values may be overriden by the WebView's defaults. 2138 */ 2139 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2140 checkThread(); 2141 loadUrlImpl(url, additionalHttpHeaders); 2142 } 2143 2144 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2145 switchOutDrawHistory(); 2146 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2147 arg.mUrl = url; 2148 arg.mExtraHeaders = extraHeaders; 2149 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2150 clearHelpers(); 2151 } 2152 2153 /** 2154 * Load the given URL. 2155 * @param url The URL of the resource to load. 2156 */ 2157 public void loadUrl(String url) { 2158 checkThread(); 2159 loadUrlImpl(url); 2160 } 2161 2162 private void loadUrlImpl(String url) { 2163 if (url == null) { 2164 return; 2165 } 2166 loadUrlImpl(url, null); 2167 } 2168 2169 /** 2170 * Load the url with postData using "POST" method into the WebView. If url 2171 * is not a network url, it will be loaded with {link 2172 * {@link #loadUrl(String)} instead. 2173 * 2174 * @param url The url of the resource to load. 2175 * @param postData The data will be passed to "POST" request. 2176 */ 2177 public void postUrl(String url, byte[] postData) { 2178 checkThread(); 2179 if (URLUtil.isNetworkUrl(url)) { 2180 switchOutDrawHistory(); 2181 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2182 arg.mUrl = url; 2183 arg.mPostData = postData; 2184 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2185 clearHelpers(); 2186 } else { 2187 loadUrlImpl(url); 2188 } 2189 } 2190 2191 /** 2192 * Load the given data into the WebView using a 'data' scheme URL. 2193 * <p> 2194 * Note that JavaScript's same origin policy means that script running in a 2195 * page loaded using this method will be unable to access content loaded 2196 * using any scheme other than 'data', including 'http(s)'. To avoid this 2197 * restriction, use {@link 2198 * #loadDataWithBaseURL(String,String,String,String,String) 2199 * loadDataWithBaseURL()} with an appropriate base URL. 2200 * <p> 2201 * If the value of the encoding parameter is 'base64', then the data must 2202 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2203 * octets inside the range of safe URL characters and use the standard %xx 2204 * hex encoding of URLs for octets outside that range. For example, 2205 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2206 * <p> 2207 * The 'data' scheme URL formed by this method uses the default US-ASCII 2208 * charset. If you need need to set a different charset, you should form a 2209 * 'data' scheme URL which explicitly specifies a charset parameter in the 2210 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2211 * Note that the charset obtained from the mediatype portion of a data URL 2212 * always overrides that specified in the HTML or XML document itself. 2213 * @param data A String of data in the given encoding. 2214 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2215 * @param encoding The encoding of the data. 2216 */ 2217 public void loadData(String data, String mimeType, String encoding) { 2218 checkThread(); 2219 loadDataImpl(data, mimeType, encoding); 2220 } 2221 2222 private void loadDataImpl(String data, String mimeType, String encoding) { 2223 StringBuilder dataUrl = new StringBuilder("data:"); 2224 dataUrl.append(mimeType); 2225 if ("base64".equals(encoding)) { 2226 dataUrl.append(";base64"); 2227 } 2228 dataUrl.append(","); 2229 dataUrl.append(data); 2230 loadUrlImpl(dataUrl.toString()); 2231 } 2232 2233 /** 2234 * Load the given data into the WebView, using baseUrl as the base URL for 2235 * the content. The base URL is used both to resolve relative URLs and when 2236 * applying JavaScript's same origin policy. The historyUrl is used for the 2237 * history entry. 2238 * <p> 2239 * Note that content specified in this way can access local device files 2240 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2241 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2242 * <p> 2243 * If the base URL uses the data scheme, this method is equivalent to 2244 * calling {@link #loadData(String,String,String) loadData()} and the 2245 * historyUrl is ignored. 2246 * @param baseUrl URL to use as the page's base URL. If null defaults to 2247 * 'about:blank' 2248 * @param data A String of data in the given encoding. 2249 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2250 * defaults to 'text/html'. 2251 * @param encoding The encoding of the data. 2252 * @param historyUrl URL to use as the history entry, if null defaults to 2253 * 'about:blank'. 2254 */ 2255 public void loadDataWithBaseURL(String baseUrl, String data, 2256 String mimeType, String encoding, String historyUrl) { 2257 checkThread(); 2258 2259 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2260 loadDataImpl(data, mimeType, encoding); 2261 return; 2262 } 2263 switchOutDrawHistory(); 2264 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2265 arg.mBaseUrl = baseUrl; 2266 arg.mData = data; 2267 arg.mMimeType = mimeType; 2268 arg.mEncoding = encoding; 2269 arg.mHistoryUrl = historyUrl; 2270 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2271 clearHelpers(); 2272 } 2273 2274 /** 2275 * Saves the current view as a web archive. 2276 * 2277 * @param filename The filename where the archive should be placed. 2278 */ 2279 public void saveWebArchive(String filename) { 2280 checkThread(); 2281 saveWebArchiveImpl(filename, false, null); 2282 } 2283 2284 /* package */ static class SaveWebArchiveMessage { 2285 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2286 mBasename = basename; 2287 mAutoname = autoname; 2288 mCallback = callback; 2289 } 2290 2291 /* package */ final String mBasename; 2292 /* package */ final boolean mAutoname; 2293 /* package */ final ValueCallback<String> mCallback; 2294 /* package */ String mResultFile; 2295 } 2296 2297 /** 2298 * Saves the current view as a web archive. 2299 * 2300 * @param basename The filename where the archive should be placed. 2301 * @param autoname If false, takes basename to be a file. If true, basename 2302 * is assumed to be a directory in which a filename will be 2303 * chosen according to the url of the current page. 2304 * @param callback Called after the web archive has been saved. The 2305 * parameter for onReceiveValue will either be the filename 2306 * under which the file was saved, or null if saving the 2307 * file failed. 2308 */ 2309 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2310 checkThread(); 2311 saveWebArchiveImpl(basename, autoname, callback); 2312 } 2313 2314 private void saveWebArchiveImpl(String basename, boolean autoname, 2315 ValueCallback<String> callback) { 2316 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2317 new SaveWebArchiveMessage(basename, autoname, callback)); 2318 } 2319 2320 /** 2321 * Stop the current load. 2322 */ 2323 public void stopLoading() { 2324 checkThread(); 2325 // TODO: should we clear all the messages in the queue before sending 2326 // STOP_LOADING? 2327 switchOutDrawHistory(); 2328 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2329 } 2330 2331 /** 2332 * Reload the current url. 2333 */ 2334 public void reload() { 2335 checkThread(); 2336 clearHelpers(); 2337 switchOutDrawHistory(); 2338 mWebViewCore.sendMessage(EventHub.RELOAD); 2339 } 2340 2341 /** 2342 * Return true if this WebView has a back history item. 2343 * @return True iff this WebView has a back history item. 2344 */ 2345 public boolean canGoBack() { 2346 checkThread(); 2347 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2348 synchronized (l) { 2349 if (l.getClearPending()) { 2350 return false; 2351 } else { 2352 return l.getCurrentIndex() > 0; 2353 } 2354 } 2355 } 2356 2357 /** 2358 * Go back in the history of this WebView. 2359 */ 2360 public void goBack() { 2361 checkThread(); 2362 goBackOrForwardImpl(-1); 2363 } 2364 2365 /** 2366 * Return true if this WebView has a forward history item. 2367 * @return True iff this Webview has a forward history item. 2368 */ 2369 public boolean canGoForward() { 2370 checkThread(); 2371 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2372 synchronized (l) { 2373 if (l.getClearPending()) { 2374 return false; 2375 } else { 2376 return l.getCurrentIndex() < l.getSize() - 1; 2377 } 2378 } 2379 } 2380 2381 /** 2382 * Go forward in the history of this WebView. 2383 */ 2384 public void goForward() { 2385 checkThread(); 2386 goBackOrForwardImpl(1); 2387 } 2388 2389 /** 2390 * Return true if the page can go back or forward the given 2391 * number of steps. 2392 * @param steps The negative or positive number of steps to move the 2393 * history. 2394 */ 2395 public boolean canGoBackOrForward(int steps) { 2396 checkThread(); 2397 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2398 synchronized (l) { 2399 if (l.getClearPending()) { 2400 return false; 2401 } else { 2402 int newIndex = l.getCurrentIndex() + steps; 2403 return newIndex >= 0 && newIndex < l.getSize(); 2404 } 2405 } 2406 } 2407 2408 /** 2409 * Go to the history item that is the number of steps away from 2410 * the current item. Steps is negative if backward and positive 2411 * if forward. 2412 * @param steps The number of steps to take back or forward in the back 2413 * forward list. 2414 */ 2415 public void goBackOrForward(int steps) { 2416 checkThread(); 2417 goBackOrForwardImpl(steps); 2418 } 2419 2420 private void goBackOrForwardImpl(int steps) { 2421 goBackOrForward(steps, false); 2422 } 2423 2424 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2425 if (steps != 0) { 2426 clearHelpers(); 2427 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2428 ignoreSnapshot ? 1 : 0); 2429 } 2430 } 2431 2432 /** 2433 * Returns true if private browsing is enabled in this WebView. 2434 */ 2435 public boolean isPrivateBrowsingEnabled() { 2436 checkThread(); 2437 return getSettings().isPrivateBrowsingEnabled(); 2438 } 2439 2440 private void startPrivateBrowsing() { 2441 getSettings().setPrivateBrowsingEnabled(true); 2442 } 2443 2444 private boolean extendScroll(int y) { 2445 int finalY = mScroller.getFinalY(); 2446 int newY = pinLocY(finalY + y); 2447 if (newY == finalY) return false; 2448 mScroller.setFinalY(newY); 2449 mScroller.extendDuration(computeDuration(0, y)); 2450 return true; 2451 } 2452 2453 /** 2454 * Scroll the contents of the view up by half the view size 2455 * @param top true to jump to the top of the page 2456 * @return true if the page was scrolled 2457 */ 2458 public boolean pageUp(boolean top) { 2459 checkThread(); 2460 if (mNativeClass == 0) { 2461 return false; 2462 } 2463 nativeClearCursor(); // start next trackball movement from page edge 2464 if (top) { 2465 // go to the top of the document 2466 return pinScrollTo(mScrollX, 0, true, 0); 2467 } 2468 // Page up 2469 int h = getHeight(); 2470 int y; 2471 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2472 y = -h + PAGE_SCROLL_OVERLAP; 2473 } else { 2474 y = -h / 2; 2475 } 2476 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2477 : extendScroll(y); 2478 } 2479 2480 /** 2481 * Scroll the contents of the view down by half the page size 2482 * @param bottom true to jump to bottom of page 2483 * @return true if the page was scrolled 2484 */ 2485 public boolean pageDown(boolean bottom) { 2486 checkThread(); 2487 if (mNativeClass == 0) { 2488 return false; 2489 } 2490 nativeClearCursor(); // start next trackball movement from page edge 2491 if (bottom) { 2492 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2493 } 2494 // Page down. 2495 int h = getHeight(); 2496 int y; 2497 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2498 y = h - PAGE_SCROLL_OVERLAP; 2499 } else { 2500 y = h / 2; 2501 } 2502 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2503 : extendScroll(y); 2504 } 2505 2506 /** 2507 * Clear the view so that onDraw() will draw nothing but white background, 2508 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2509 */ 2510 public void clearView() { 2511 checkThread(); 2512 mContentWidth = 0; 2513 mContentHeight = 0; 2514 setBaseLayer(0, null, false, false, false); 2515 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2516 } 2517 2518 /** 2519 * Return a new picture that captures the current display of the webview. 2520 * This is a copy of the display, and will be unaffected if the webview 2521 * later loads a different URL. 2522 * 2523 * @return a picture containing the current contents of the view. Note this 2524 * picture is of the entire document, and is not restricted to the 2525 * bounds of the view. 2526 */ 2527 public Picture capturePicture() { 2528 checkThread(); 2529 if (mNativeClass == 0) return null; 2530 Picture result = new Picture(); 2531 nativeCopyBaseContentToPicture(result); 2532 return result; 2533 } 2534 2535 /** 2536 * Return true if the browser is displaying a TextView for text input. 2537 */ 2538 private boolean inEditingMode() { 2539 return mWebTextView != null && mWebTextView.getParent() != null; 2540 } 2541 2542 /** 2543 * Remove the WebTextView. 2544 */ 2545 private void clearTextEntry() { 2546 if (inEditingMode()) { 2547 mWebTextView.remove(); 2548 } else { 2549 // The keyboard may be open with the WebView as the served view 2550 hideSoftKeyboard(); 2551 } 2552 } 2553 2554 /** 2555 * Return the current scale of the WebView 2556 * @return The current scale. 2557 */ 2558 public float getScale() { 2559 checkThread(); 2560 return mZoomManager.getScale(); 2561 } 2562 2563 // Called by JNI. Returns the scale to apply to the text selection handles 2564 /* package */ float getTextHandleScale() { 2565 float density = mContext.getResources().getDisplayMetrics().density; 2566 return density / getScale(); 2567 } 2568 2569 /** 2570 * Compute the reading level scale of the WebView 2571 * @param scale The current scale. 2572 * @return The reading level scale. 2573 */ 2574 /*package*/ float computeReadingLevelScale(float scale) { 2575 return mZoomManager.computeReadingLevelScale(scale); 2576 } 2577 2578 /** 2579 * Set the initial scale for the WebView. 0 means default. If 2580 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2581 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2582 * WebView starts with this value as initial scale. 2583 * Please note that unlike the scale properties in the viewport meta tag, 2584 * this method doesn't take the screen density into account. 2585 * 2586 * @param scaleInPercent The initial scale in percent. 2587 */ 2588 public void setInitialScale(int scaleInPercent) { 2589 checkThread(); 2590 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2591 } 2592 2593 /** 2594 * Invoke the graphical zoom picker widget for this WebView. This will 2595 * result in the zoom widget appearing on the screen to control the zoom 2596 * level of this WebView. 2597 */ 2598 public void invokeZoomPicker() { 2599 checkThread(); 2600 if (!getSettings().supportZoom()) { 2601 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2602 return; 2603 } 2604 clearHelpers(); 2605 mZoomManager.invokeZoomPicker(); 2606 } 2607 2608 /** 2609 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2610 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2611 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2612 * anchor does not have a url or if it is a JavaScript url, the type will 2613 * be UNKNOWN_TYPE and the url has to be retrieved through 2614 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2615 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2616 * the "extra" field. A type of 2617 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2618 * a child node. If a phone number is found, the HitTestResult type is set 2619 * to PHONE_TYPE and the phone number is set in the "extra" field of 2620 * HitTestResult. If a map address is found, the HitTestResult type is set 2621 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2622 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2623 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2624 * HitTestResult type is set to UNKNOWN_TYPE. 2625 */ 2626 public HitTestResult getHitTestResult() { 2627 checkThread(); 2628 return hitTestResult(mInitialHitTestResult); 2629 } 2630 2631 private HitTestResult hitTestResult(HitTestResult fallback) { 2632 if (mNativeClass == 0 || sDisableNavcache) { 2633 return fallback; 2634 } 2635 2636 HitTestResult result = new HitTestResult(); 2637 if (nativeHasCursorNode()) { 2638 if (nativeCursorIsTextInput()) { 2639 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2640 } else { 2641 String text = nativeCursorText(); 2642 if (text != null) { 2643 if (text.startsWith(SCHEME_TEL)) { 2644 result.setType(HitTestResult.PHONE_TYPE); 2645 result.setExtra(URLDecoder.decode(text 2646 .substring(SCHEME_TEL.length()))); 2647 } else if (text.startsWith(SCHEME_MAILTO)) { 2648 result.setType(HitTestResult.EMAIL_TYPE); 2649 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2650 } else if (text.startsWith(SCHEME_GEO)) { 2651 result.setType(HitTestResult.GEO_TYPE); 2652 result.setExtra(URLDecoder.decode(text 2653 .substring(SCHEME_GEO.length()))); 2654 } else if (nativeCursorIsAnchor()) { 2655 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2656 result.setExtra(text); 2657 } 2658 } 2659 } 2660 } else if (fallback != null) { 2661 /* If webkit causes a rebuild while the long press is in progress, 2662 * the cursor node may be reset, even if it is still around. This 2663 * uses the cursor node saved when the touch began. Since the 2664 * nativeImageURI below only changes the result if it is successful, 2665 * this uses the data beneath the touch if available or the original 2666 * tap data otherwise. 2667 */ 2668 Log.v(LOGTAG, "hitTestResult use fallback"); 2669 result = fallback; 2670 } 2671 int type = result.getType(); 2672 if (type == HitTestResult.UNKNOWN_TYPE 2673 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2674 // Now check to see if it is an image. 2675 int contentX = viewToContentX(mLastTouchX + mScrollX); 2676 int contentY = viewToContentY(mLastTouchY + mScrollY); 2677 String text = nativeImageURI(contentX, contentY); 2678 if (text != null) { 2679 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2680 HitTestResult.IMAGE_TYPE : 2681 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2682 result.setExtra(text); 2683 } 2684 } 2685 return result; 2686 } 2687 2688 // Called by JNI when the DOM has changed the focus. Clear the focus so 2689 // that new keys will go to the newly focused field 2690 private void domChangedFocus() { 2691 if (inEditingMode()) { 2692 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2693 } 2694 } 2695 /** 2696 * Request the anchor or image element URL at the last tapped point. 2697 * If hrefMsg is null, this method returns immediately and does not 2698 * dispatch hrefMsg to its target. If the tapped point hits an image, 2699 * an anchor, or an image in an anchor, the message associates 2700 * strings in named keys in its data. The value paired with the key 2701 * may be an empty string. 2702 * 2703 * @param hrefMsg This message will be dispatched with the result of the 2704 * request. The message data contains three keys: 2705 * - "url" returns the anchor's href attribute. 2706 * - "title" returns the anchor's text. 2707 * - "src" returns the image's src attribute. 2708 */ 2709 public void requestFocusNodeHref(Message hrefMsg) { 2710 checkThread(); 2711 if (hrefMsg == null) { 2712 return; 2713 } 2714 int contentX = viewToContentX(mLastTouchX + mScrollX); 2715 int contentY = viewToContentY(mLastTouchY + mScrollY); 2716 if (nativeHasCursorNode()) { 2717 Rect cursorBounds = nativeGetCursorRingBounds(); 2718 if (!cursorBounds.contains(contentX, contentY)) { 2719 int slop = viewToContentDimension(mNavSlop); 2720 cursorBounds.inset(-slop, -slop); 2721 if (cursorBounds.contains(contentX, contentY)) { 2722 contentX = cursorBounds.centerX(); 2723 contentY = cursorBounds.centerY(); 2724 } 2725 } 2726 } 2727 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2728 contentX, contentY, hrefMsg); 2729 } 2730 2731 /** 2732 * Request the url of the image last touched by the user. msg will be sent 2733 * to its target with a String representing the url as its object. 2734 * 2735 * @param msg This message will be dispatched with the result of the request 2736 * as the data member with "url" as key. The result can be null. 2737 */ 2738 public void requestImageRef(Message msg) { 2739 checkThread(); 2740 if (0 == mNativeClass) return; // client isn't initialized 2741 int contentX = viewToContentX(mLastTouchX + mScrollX); 2742 int contentY = viewToContentY(mLastTouchY + mScrollY); 2743 String ref = nativeImageURI(contentX, contentY); 2744 Bundle data = msg.getData(); 2745 data.putString("url", ref); 2746 msg.setData(data); 2747 msg.sendToTarget(); 2748 } 2749 2750 static int pinLoc(int x, int viewMax, int docMax) { 2751// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2752 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2753 // pin the short document to the top/left of the screen 2754 x = 0; 2755// Log.d(LOGTAG, "--- center " + x); 2756 } else if (x < 0) { 2757 x = 0; 2758// Log.d(LOGTAG, "--- zero"); 2759 } else if (x + viewMax > docMax) { 2760 x = docMax - viewMax; 2761// Log.d(LOGTAG, "--- pin " + x); 2762 } 2763 return x; 2764 } 2765 2766 // Expects x in view coordinates 2767 int pinLocX(int x) { 2768 if (mInOverScrollMode) return x; 2769 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2770 } 2771 2772 // Expects y in view coordinates 2773 int pinLocY(int y) { 2774 if (mInOverScrollMode) return y; 2775 return pinLoc(y, getViewHeightWithTitle(), 2776 computeRealVerticalScrollRange() + getTitleHeight()); 2777 } 2778 2779 /** 2780 * A title bar which is embedded in this WebView, and scrolls along with it 2781 * vertically, but not horizontally. 2782 */ 2783 private View mTitleBar; 2784 2785 /** 2786 * the title bar rendering gravity 2787 */ 2788 private int mTitleGravity; 2789 2790 /** 2791 * Add or remove a title bar to be embedded into the WebView, and scroll 2792 * along with it vertically, while remaining in view horizontally. Pass 2793 * null to remove the title bar from the WebView, and return to drawing 2794 * the WebView normally without translating to account for the title bar. 2795 * @hide 2796 */ 2797 public void setEmbeddedTitleBar(View v) { 2798 if (mTitleBar == v) return; 2799 if (mTitleBar != null) { 2800 removeView(mTitleBar); 2801 } 2802 if (null != v) { 2803 addView(v, new AbsoluteLayout.LayoutParams( 2804 ViewGroup.LayoutParams.MATCH_PARENT, 2805 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2806 } 2807 mTitleBar = v; 2808 } 2809 2810 /** 2811 * Set where to render the embedded title bar 2812 * NO_GRAVITY at the top of the page 2813 * TOP at the top of the screen 2814 * @hide 2815 */ 2816 public void setTitleBarGravity(int gravity) { 2817 mTitleGravity = gravity; 2818 // force refresh 2819 invalidate(); 2820 } 2821 2822 /** 2823 * Given a distance in view space, convert it to content space. Note: this 2824 * does not reflect translation, just scaling, so this should not be called 2825 * with coordinates, but should be called for dimensions like width or 2826 * height. 2827 */ 2828 private int viewToContentDimension(int d) { 2829 return Math.round(d * mZoomManager.getInvScale()); 2830 } 2831 2832 /** 2833 * Given an x coordinate in view space, convert it to content space. Also 2834 * may be used for absolute heights (such as for the WebTextView's 2835 * textSize, which is unaffected by the height of the title bar). 2836 */ 2837 /*package*/ int viewToContentX(int x) { 2838 return viewToContentDimension(x); 2839 } 2840 2841 /** 2842 * Given a y coordinate in view space, convert it to content space. 2843 * Takes into account the height of the title bar if there is one 2844 * embedded into the WebView. 2845 */ 2846 /*package*/ int viewToContentY(int y) { 2847 return viewToContentDimension(y - getTitleHeight()); 2848 } 2849 2850 /** 2851 * Given a x coordinate in view space, convert it to content space. 2852 * Returns the result as a float. 2853 */ 2854 private float viewToContentXf(int x) { 2855 return x * mZoomManager.getInvScale(); 2856 } 2857 2858 /** 2859 * Given a y coordinate in view space, convert it to content space. 2860 * Takes into account the height of the title bar if there is one 2861 * embedded into the WebView. Returns the result as a float. 2862 */ 2863 private float viewToContentYf(int y) { 2864 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2865 } 2866 2867 /** 2868 * Given a distance in content space, convert it to view space. Note: this 2869 * does not reflect translation, just scaling, so this should not be called 2870 * with coordinates, but should be called for dimensions like width or 2871 * height. 2872 */ 2873 /*package*/ int contentToViewDimension(int d) { 2874 return Math.round(d * mZoomManager.getScale()); 2875 } 2876 2877 /** 2878 * Given an x coordinate in content space, convert it to view 2879 * space. 2880 */ 2881 /*package*/ int contentToViewX(int x) { 2882 return contentToViewDimension(x); 2883 } 2884 2885 /** 2886 * Given a y coordinate in content space, convert it to view 2887 * space. Takes into account the height of the title bar. 2888 */ 2889 /*package*/ int contentToViewY(int y) { 2890 return contentToViewDimension(y) + getTitleHeight(); 2891 } 2892 2893 private Rect contentToViewRect(Rect x) { 2894 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2895 contentToViewX(x.right), contentToViewY(x.bottom)); 2896 } 2897 2898 /* To invalidate a rectangle in content coordinates, we need to transform 2899 the rect into view coordinates, so we can then call invalidate(...). 2900 2901 Normally, we would just call contentToView[XY](...), which eventually 2902 calls Math.round(coordinate * mActualScale). However, for invalidates, 2903 we need to account for the slop that occurs with antialiasing. To 2904 address that, we are a little more liberal in the size of the rect that 2905 we invalidate. 2906 2907 This liberal calculation calls floor() for the top/left, and ceil() for 2908 the bottom/right coordinates. This catches the possible extra pixels of 2909 antialiasing that we might have missed with just round(). 2910 */ 2911 2912 // Called by JNI to invalidate the View, given rectangle coordinates in 2913 // content space 2914 private void viewInvalidate(int l, int t, int r, int b) { 2915 final float scale = mZoomManager.getScale(); 2916 final int dy = getTitleHeight(); 2917 invalidate((int)Math.floor(l * scale), 2918 (int)Math.floor(t * scale) + dy, 2919 (int)Math.ceil(r * scale), 2920 (int)Math.ceil(b * scale) + dy); 2921 } 2922 2923 // Called by JNI to invalidate the View after a delay, given rectangle 2924 // coordinates in content space 2925 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2926 final float scale = mZoomManager.getScale(); 2927 final int dy = getTitleHeight(); 2928 postInvalidateDelayed(delay, 2929 (int)Math.floor(l * scale), 2930 (int)Math.floor(t * scale) + dy, 2931 (int)Math.ceil(r * scale), 2932 (int)Math.ceil(b * scale) + dy); 2933 } 2934 2935 private void invalidateContentRect(Rect r) { 2936 viewInvalidate(r.left, r.top, r.right, r.bottom); 2937 } 2938 2939 // stop the scroll animation, and don't let a subsequent fling add 2940 // to the existing velocity 2941 private void abortAnimation() { 2942 mScroller.abortAnimation(); 2943 mLastVelocity = 0; 2944 } 2945 2946 /* call from webcoreview.draw(), so we're still executing in the UI thread 2947 */ 2948 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2949 2950 // premature data from webkit, ignore 2951 if ((w | h) == 0) { 2952 return; 2953 } 2954 2955 // don't abort a scroll animation if we didn't change anything 2956 if (mContentWidth != w || mContentHeight != h) { 2957 // record new dimensions 2958 mContentWidth = w; 2959 mContentHeight = h; 2960 // If history Picture is drawn, don't update scroll. They will be 2961 // updated when we get out of that mode. 2962 if (!mDrawHistory) { 2963 // repin our scroll, taking into account the new content size 2964 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2965 if (!mScroller.isFinished()) { 2966 // We are in the middle of a scroll. Repin the final scroll 2967 // position. 2968 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2969 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2970 } 2971 } 2972 } 2973 contentSizeChanged(updateLayout); 2974 } 2975 2976 // Used to avoid sending many visible rect messages. 2977 private Rect mLastVisibleRectSent = new Rect(); 2978 private Rect mLastGlobalRect = new Rect(); 2979 private Rect mVisibleRect = new Rect(); 2980 private Rect mGlobalVisibleRect = new Rect(); 2981 private Point mScrollOffset = new Point(); 2982 2983 Rect sendOurVisibleRect() { 2984 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2985 calcOurContentVisibleRect(mVisibleRect); 2986 // Rect.equals() checks for null input. 2987 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 2988 if (!mBlockWebkitViewMessages) { 2989 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 2990 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2991 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2992 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 2993 } 2994 mLastVisibleRectSent.set(mVisibleRect); 2995 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2996 } 2997 if (getGlobalVisibleRect(mGlobalVisibleRect) 2998 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 2999 if (DebugFlags.WEB_VIEW) { 3000 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 3001 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 3002 + mGlobalVisibleRect.bottom); 3003 } 3004 // TODO: the global offset is only used by windowRect() 3005 // in ChromeClientAndroid ; other clients such as touch 3006 // and mouse events could return view + screen relative points. 3007 if (!mBlockWebkitViewMessages) { 3008 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 3009 } 3010 mLastGlobalRect.set(mGlobalVisibleRect); 3011 } 3012 return mVisibleRect; 3013 } 3014 3015 private Point mGlobalVisibleOffset = new Point(); 3016 // Sets r to be the visible rectangle of our webview in view coordinates 3017 private void calcOurVisibleRect(Rect r) { 3018 getGlobalVisibleRect(r, mGlobalVisibleOffset); 3019 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 3020 } 3021 3022 // Sets r to be our visible rectangle in content coordinates 3023 private void calcOurContentVisibleRect(Rect r) { 3024 calcOurVisibleRect(r); 3025 r.left = viewToContentX(r.left); 3026 // viewToContentY will remove the total height of the title bar. Add 3027 // the visible height back in to account for the fact that if the title 3028 // bar is partially visible, the part of the visible rect which is 3029 // displaying our content is displaced by that amount. 3030 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 3031 r.right = viewToContentX(r.right); 3032 r.bottom = viewToContentY(r.bottom); 3033 } 3034 3035 private Rect mContentVisibleRect = new Rect(); 3036 // Sets r to be our visible rectangle in content coordinates. We use this 3037 // method on the native side to compute the position of the fixed layers. 3038 // Uses floating coordinates (necessary to correctly place elements when 3039 // the scale factor is not 1) 3040 private void calcOurContentVisibleRectF(RectF r) { 3041 calcOurVisibleRect(mContentVisibleRect); 3042 r.left = viewToContentXf(mContentVisibleRect.left); 3043 // viewToContentY will remove the total height of the title bar. Add 3044 // the visible height back in to account for the fact that if the title 3045 // bar is partially visible, the part of the visible rect which is 3046 // displaying our content is displaced by that amount. 3047 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 3048 r.right = viewToContentXf(mContentVisibleRect.right); 3049 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 3050 } 3051 3052 static class ViewSizeData { 3053 int mWidth; 3054 int mHeight; 3055 float mHeightWidthRatio; 3056 int mActualViewHeight; 3057 int mTextWrapWidth; 3058 int mAnchorX; 3059 int mAnchorY; 3060 float mScale; 3061 boolean mIgnoreHeight; 3062 } 3063 3064 /** 3065 * Compute unzoomed width and height, and if they differ from the last 3066 * values we sent, send them to webkit (to be used as new viewport) 3067 * 3068 * @param force ensures that the message is sent to webkit even if the width 3069 * or height has not changed since the last message 3070 * 3071 * @return true if new values were sent 3072 */ 3073 boolean sendViewSizeZoom(boolean force) { 3074 if (mBlockWebkitViewMessages) return false; 3075 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3076 3077 int viewWidth = getViewWidth(); 3078 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3079 // This height could be fixed and be different from actual visible height. 3080 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3081 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3082 // Make the ratio more accurate than (newHeight / newWidth), since the 3083 // latter both are calculated and rounded. 3084 float heightWidthRatio = (float) viewHeight / viewWidth; 3085 /* 3086 * Because the native side may have already done a layout before the 3087 * View system was able to measure us, we have to send a height of 0 to 3088 * remove excess whitespace when we grow our width. This will trigger a 3089 * layout and a change in content size. This content size change will 3090 * mean that contentSizeChanged will either call this method directly or 3091 * indirectly from onSizeChanged. 3092 */ 3093 if (newWidth > mLastWidthSent && mWrapContent) { 3094 newHeight = 0; 3095 heightWidthRatio = 0; 3096 } 3097 // Actual visible content height. 3098 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3099 // Avoid sending another message if the dimensions have not changed. 3100 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3101 actualViewHeight != mLastActualHeightSent) { 3102 ViewSizeData data = new ViewSizeData(); 3103 data.mWidth = newWidth; 3104 data.mHeight = newHeight; 3105 data.mHeightWidthRatio = heightWidthRatio; 3106 data.mActualViewHeight = actualViewHeight; 3107 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3108 data.mScale = mZoomManager.getScale(); 3109 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3110 && !mHeightCanMeasure; 3111 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3112 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3113 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3114 mLastWidthSent = newWidth; 3115 mLastHeightSent = newHeight; 3116 mLastActualHeightSent = actualViewHeight; 3117 mZoomManager.clearDocumentAnchor(); 3118 return true; 3119 } 3120 return false; 3121 } 3122 3123 /** 3124 * Update the double-tap zoom. 3125 */ 3126 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3127 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3128 } 3129 3130 private int computeRealHorizontalScrollRange() { 3131 if (mDrawHistory) { 3132 return mHistoryWidth; 3133 } else { 3134 // to avoid rounding error caused unnecessary scrollbar, use floor 3135 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3136 } 3137 } 3138 3139 @Override 3140 protected int computeHorizontalScrollRange() { 3141 int range = computeRealHorizontalScrollRange(); 3142 3143 // Adjust reported range if overscrolled to compress the scroll bars 3144 final int scrollX = mScrollX; 3145 final int overscrollRight = computeMaxScrollX(); 3146 if (scrollX < 0) { 3147 range -= scrollX; 3148 } else if (scrollX > overscrollRight) { 3149 range += scrollX - overscrollRight; 3150 } 3151 3152 return range; 3153 } 3154 3155 @Override 3156 protected int computeHorizontalScrollOffset() { 3157 return Math.max(mScrollX, 0); 3158 } 3159 3160 private int computeRealVerticalScrollRange() { 3161 if (mDrawHistory) { 3162 return mHistoryHeight; 3163 } else { 3164 // to avoid rounding error caused unnecessary scrollbar, use floor 3165 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3166 } 3167 } 3168 3169 @Override 3170 protected int computeVerticalScrollRange() { 3171 int range = computeRealVerticalScrollRange(); 3172 3173 // Adjust reported range if overscrolled to compress the scroll bars 3174 final int scrollY = mScrollY; 3175 final int overscrollBottom = computeMaxScrollY(); 3176 if (scrollY < 0) { 3177 range -= scrollY; 3178 } else if (scrollY > overscrollBottom) { 3179 range += scrollY - overscrollBottom; 3180 } 3181 3182 return range; 3183 } 3184 3185 @Override 3186 protected int computeVerticalScrollOffset() { 3187 return Math.max(mScrollY - getTitleHeight(), 0); 3188 } 3189 3190 @Override 3191 protected int computeVerticalScrollExtent() { 3192 return getViewHeight(); 3193 } 3194 3195 /** @hide */ 3196 @Override 3197 protected void onDrawVerticalScrollBar(Canvas canvas, 3198 Drawable scrollBar, 3199 int l, int t, int r, int b) { 3200 if (mScrollY < 0) { 3201 t -= mScrollY; 3202 } 3203 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3204 scrollBar.draw(canvas); 3205 } 3206 3207 @Override 3208 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3209 boolean clampedY) { 3210 // Special-case layer scrolling so that we do not trigger normal scroll 3211 // updating. 3212 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3213 scrollLayerTo(scrollX, scrollY); 3214 return; 3215 } 3216 mInOverScrollMode = false; 3217 int maxX = computeMaxScrollX(); 3218 int maxY = computeMaxScrollY(); 3219 if (maxX == 0) { 3220 // do not over scroll x if the page just fits the screen 3221 scrollX = pinLocX(scrollX); 3222 } else if (scrollX < 0 || scrollX > maxX) { 3223 mInOverScrollMode = true; 3224 } 3225 if (scrollY < 0 || scrollY > maxY) { 3226 mInOverScrollMode = true; 3227 } 3228 3229 int oldX = mScrollX; 3230 int oldY = mScrollY; 3231 3232 super.scrollTo(scrollX, scrollY); 3233 3234 if (mOverScrollGlow != null) { 3235 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3236 } 3237 } 3238 3239 /** 3240 * Get the url for the current page. This is not always the same as the url 3241 * passed to WebViewClient.onPageStarted because although the load for 3242 * that url has begun, the current page may not have changed. 3243 * @return The url for the current page. 3244 */ 3245 public String getUrl() { 3246 checkThread(); 3247 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3248 return h != null ? h.getUrl() : null; 3249 } 3250 3251 /** 3252 * Get the original url for the current page. This is not always the same 3253 * as the url passed to WebViewClient.onPageStarted because although the 3254 * load for that url has begun, the current page may not have changed. 3255 * Also, there may have been redirects resulting in a different url to that 3256 * originally requested. 3257 * @return The url that was originally requested for the current page. 3258 */ 3259 public String getOriginalUrl() { 3260 checkThread(); 3261 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3262 return h != null ? h.getOriginalUrl() : null; 3263 } 3264 3265 /** 3266 * Get the title for the current page. This is the title of the current page 3267 * until WebViewClient.onReceivedTitle is called. 3268 * @return The title for the current page. 3269 */ 3270 public String getTitle() { 3271 checkThread(); 3272 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3273 return h != null ? h.getTitle() : null; 3274 } 3275 3276 /** 3277 * Get the favicon for the current page. This is the favicon of the current 3278 * page until WebViewClient.onReceivedIcon is called. 3279 * @return The favicon for the current page. 3280 */ 3281 public Bitmap getFavicon() { 3282 checkThread(); 3283 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3284 return h != null ? h.getFavicon() : null; 3285 } 3286 3287 /** 3288 * Get the touch icon url for the apple-touch-icon <link> element, or 3289 * a URL on this site's server pointing to the standard location of a 3290 * touch icon. 3291 * @hide 3292 */ 3293 public String getTouchIconUrl() { 3294 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3295 return h != null ? h.getTouchIconUrl() : null; 3296 } 3297 3298 /** 3299 * Get the progress for the current page. 3300 * @return The progress for the current page between 0 and 100. 3301 */ 3302 public int getProgress() { 3303 checkThread(); 3304 return mCallbackProxy.getProgress(); 3305 } 3306 3307 /** 3308 * @return the height of the HTML content. 3309 */ 3310 public int getContentHeight() { 3311 checkThread(); 3312 return mContentHeight; 3313 } 3314 3315 /** 3316 * @return the width of the HTML content. 3317 * @hide 3318 */ 3319 public int getContentWidth() { 3320 return mContentWidth; 3321 } 3322 3323 /** 3324 * @hide 3325 */ 3326 public int getPageBackgroundColor() { 3327 return nativeGetBackgroundColor(); 3328 } 3329 3330 /** 3331 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3332 * is a global requests, not restricted to just this webview. This can be 3333 * useful if the application has been paused. 3334 */ 3335 public void pauseTimers() { 3336 checkThread(); 3337 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3338 } 3339 3340 /** 3341 * Resume all layout, parsing, and JavaScript timers for all webviews. 3342 * This will resume dispatching all timers. 3343 */ 3344 public void resumeTimers() { 3345 checkThread(); 3346 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3347 } 3348 3349 /** 3350 * Call this to pause any extra processing associated with this WebView and 3351 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3352 * is taken offscreen, this could be called to reduce unnecessary CPU or 3353 * network traffic. When the WebView is again "active", call onResume(). 3354 * 3355 * Note that this differs from pauseTimers(), which affects all WebViews. 3356 */ 3357 public void onPause() { 3358 checkThread(); 3359 if (!mIsPaused) { 3360 mIsPaused = true; 3361 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3362 // We want to pause the current playing video when switching out 3363 // from the current WebView/tab. 3364 if (mHTML5VideoViewProxy != null) { 3365 mHTML5VideoViewProxy.pauseAndDispatch(); 3366 } 3367 if (mNativeClass != 0) { 3368 nativeSetPauseDrawing(mNativeClass, true); 3369 } 3370 3371 cancelSelectDialog(); 3372 WebCoreThreadWatchdog.pause(); 3373 } 3374 } 3375 3376 @Override 3377 protected void onWindowVisibilityChanged(int visibility) { 3378 super.onWindowVisibilityChanged(visibility); 3379 updateDrawingState(); 3380 } 3381 3382 void updateDrawingState() { 3383 if (mNativeClass == 0 || mIsPaused) return; 3384 if (getWindowVisibility() != VISIBLE) { 3385 nativeSetPauseDrawing(mNativeClass, true); 3386 } else if (getVisibility() != VISIBLE) { 3387 nativeSetPauseDrawing(mNativeClass, true); 3388 } else { 3389 nativeSetPauseDrawing(mNativeClass, false); 3390 } 3391 } 3392 3393 /** 3394 * Call this to resume a WebView after a previous call to onPause(). 3395 */ 3396 public void onResume() { 3397 checkThread(); 3398 if (mIsPaused) { 3399 mIsPaused = false; 3400 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3401 if (mNativeClass != 0) { 3402 nativeSetPauseDrawing(mNativeClass, false); 3403 } 3404 } 3405 // Ensure that the watchdog has a currently valid Context to be able to display 3406 // a prompt dialog. For example, if the Activity was finished whilst the WebCore 3407 // thread was blocked and the Activity is started again, we may reuse the blocked 3408 // thread, but we'll have a new Activity. 3409 WebCoreThreadWatchdog.updateContext(mContext); 3410 // We get a call to onResume for new WebViews (i.e. mIsPaused will be false). We need 3411 // to ensure that the Watchdog thread is running for the new WebView, so call 3412 // it outside the if block above. 3413 WebCoreThreadWatchdog.resume(); 3414 } 3415 3416 /** 3417 * Returns true if the view is paused, meaning onPause() was called. Calling 3418 * onResume() sets the paused state back to false. 3419 * @hide 3420 */ 3421 public boolean isPaused() { 3422 return mIsPaused; 3423 } 3424 3425 /** 3426 * Call this to inform the view that memory is low so that it can 3427 * free any available memory. 3428 */ 3429 public void freeMemory() { 3430 checkThread(); 3431 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3432 } 3433 3434 /** 3435 * Clear the resource cache. Note that the cache is per-application, so 3436 * this will clear the cache for all WebViews used. 3437 * 3438 * @param includeDiskFiles If false, only the RAM cache is cleared. 3439 */ 3440 public void clearCache(boolean includeDiskFiles) { 3441 checkThread(); 3442 // Note: this really needs to be a static method as it clears cache for all 3443 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3444 // we can't make this static. 3445 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3446 includeDiskFiles ? 1 : 0, 0); 3447 } 3448 3449 /** 3450 * Make sure that clearing the form data removes the adapter from the 3451 * currently focused textfield if there is one. 3452 */ 3453 public void clearFormData() { 3454 checkThread(); 3455 if (inEditingMode()) { 3456 mWebTextView.setAdapterCustom(null); 3457 } 3458 } 3459 3460 /** 3461 * Tell the WebView to clear its internal back/forward list. 3462 */ 3463 public void clearHistory() { 3464 checkThread(); 3465 mCallbackProxy.getBackForwardList().setClearPending(); 3466 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3467 } 3468 3469 /** 3470 * Clear the SSL preferences table stored in response to proceeding with SSL 3471 * certificate errors. 3472 */ 3473 public void clearSslPreferences() { 3474 checkThread(); 3475 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3476 } 3477 3478 /** 3479 * Return the WebBackForwardList for this WebView. This contains the 3480 * back/forward list for use in querying each item in the history stack. 3481 * This is a copy of the private WebBackForwardList so it contains only a 3482 * snapshot of the current state. Multiple calls to this method may return 3483 * different objects. The object returned from this method will not be 3484 * updated to reflect any new state. 3485 */ 3486 public WebBackForwardList copyBackForwardList() { 3487 checkThread(); 3488 return mCallbackProxy.getBackForwardList().clone(); 3489 } 3490 3491 /* 3492 * Highlight and scroll to the next occurance of String in findAll. 3493 * Wraps the page infinitely, and scrolls. Must be called after 3494 * calling findAll. 3495 * 3496 * @param forward Direction to search. 3497 */ 3498 public void findNext(boolean forward) { 3499 checkThread(); 3500 if (0 == mNativeClass) return; // client isn't initialized 3501 nativeFindNext(forward); 3502 } 3503 3504 /* 3505 * Find all instances of find on the page and highlight them. 3506 * @param find String to find. 3507 * @return int The number of occurances of the String "find" 3508 * that were found. 3509 */ 3510 public int findAll(String find) { 3511 checkThread(); 3512 if (0 == mNativeClass) return 0; // client isn't initialized 3513 int result = find != null ? nativeFindAll(find.toLowerCase(), 3514 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3515 invalidate(); 3516 mLastFind = find; 3517 return result; 3518 } 3519 3520 /** 3521 * Start an ActionMode for finding text in this WebView. Only works if this 3522 * WebView is attached to the view system. 3523 * @param text If non-null, will be the initial text to search for. 3524 * Otherwise, the last String searched for in this WebView will 3525 * be used to start. 3526 * @param showIme If true, show the IME, assuming the user will begin typing. 3527 * If false and text is non-null, perform a find all. 3528 * @return boolean True if the find dialog is shown, false otherwise. 3529 */ 3530 public boolean showFindDialog(String text, boolean showIme) { 3531 checkThread(); 3532 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3533 if (getParent() == null || startActionMode(callback) == null) { 3534 // Could not start the action mode, so end Find on page 3535 return false; 3536 } 3537 mCachedOverlappingActionModeHeight = -1; 3538 mFindCallback = callback; 3539 setFindIsUp(true); 3540 mFindCallback.setWebView(this); 3541 if (showIme) { 3542 mFindCallback.showSoftInput(); 3543 } else if (text != null) { 3544 mFindCallback.setText(text); 3545 mFindCallback.findAll(); 3546 return true; 3547 } 3548 if (text == null) { 3549 text = mLastFind; 3550 } 3551 if (text != null) { 3552 mFindCallback.setText(text); 3553 } 3554 return true; 3555 } 3556 3557 /** 3558 * Keep track of the find callback so that we can remove its titlebar if 3559 * necessary. 3560 */ 3561 private FindActionModeCallback mFindCallback; 3562 3563 /** 3564 * Toggle whether the find dialog is showing, for both native and Java. 3565 */ 3566 private void setFindIsUp(boolean isUp) { 3567 mFindIsUp = isUp; 3568 if (0 == mNativeClass) return; // client isn't initialized 3569 nativeSetFindIsUp(isUp); 3570 } 3571 3572 /** 3573 * Return the index of the currently highlighted match. 3574 */ 3575 int findIndex() { 3576 if (0 == mNativeClass) return -1; 3577 return nativeFindIndex(); 3578 } 3579 3580 // Used to know whether the find dialog is open. Affects whether 3581 // or not we draw the highlights for matches. 3582 private boolean mFindIsUp; 3583 3584 // Keep track of the last string sent, so we can search again when find is 3585 // reopened. 3586 private String mLastFind; 3587 3588 /** 3589 * Return the first substring consisting of the address of a physical 3590 * location. Currently, only addresses in the United States are detected, 3591 * and consist of: 3592 * - a house number 3593 * - a street name 3594 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3595 * - a city name 3596 * - a state or territory, either spelled out or two-letter abbr. 3597 * - an optional 5 digit or 9 digit zip code. 3598 * 3599 * All names must be correctly capitalized, and the zip code, if present, 3600 * must be valid for the state. The street type must be a standard USPS 3601 * spelling or abbreviation. The state or territory must also be spelled 3602 * or abbreviated using USPS standards. The house number may not exceed 3603 * five digits. 3604 * @param addr The string to search for addresses. 3605 * 3606 * @return the address, or if no address is found, return null. 3607 */ 3608 public static String findAddress(String addr) { 3609 checkThread(); 3610 return findAddress(addr, false); 3611 } 3612 3613 /** 3614 * @hide 3615 * Return the first substring consisting of the address of a physical 3616 * location. Currently, only addresses in the United States are detected, 3617 * and consist of: 3618 * - a house number 3619 * - a street name 3620 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3621 * - a city name 3622 * - a state or territory, either spelled out or two-letter abbr. 3623 * - an optional 5 digit or 9 digit zip code. 3624 * 3625 * Names are optionally capitalized, and the zip code, if present, 3626 * must be valid for the state. The street type must be a standard USPS 3627 * spelling or abbreviation. The state or territory must also be spelled 3628 * or abbreviated using USPS standards. The house number may not exceed 3629 * five digits. 3630 * @param addr The string to search for addresses. 3631 * @param caseInsensitive addr Set to true to make search ignore case. 3632 * 3633 * @return the address, or if no address is found, return null. 3634 */ 3635 public static String findAddress(String addr, boolean caseInsensitive) { 3636 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3637 } 3638 3639 /* 3640 * Clear the highlighting surrounding text matches created by findAll. 3641 */ 3642 public void clearMatches() { 3643 checkThread(); 3644 if (mNativeClass == 0) 3645 return; 3646 nativeSetFindIsEmpty(); 3647 invalidate(); 3648 } 3649 3650 /** 3651 * Called when the find ActionMode ends. 3652 */ 3653 void notifyFindDialogDismissed() { 3654 mFindCallback = null; 3655 mCachedOverlappingActionModeHeight = -1; 3656 if (mWebViewCore == null) { 3657 return; 3658 } 3659 clearMatches(); 3660 setFindIsUp(false); 3661 // Now that the dialog has been removed, ensure that we scroll to a 3662 // location that is not beyond the end of the page. 3663 pinScrollTo(mScrollX, mScrollY, false, 0); 3664 invalidate(); 3665 } 3666 3667 /** 3668 * Query the document to see if it contains any image references. The 3669 * message object will be dispatched with arg1 being set to 1 if images 3670 * were found and 0 if the document does not reference any images. 3671 * @param response The message that will be dispatched with the result. 3672 */ 3673 public void documentHasImages(Message response) { 3674 checkThread(); 3675 if (response == null) { 3676 return; 3677 } 3678 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3679 } 3680 3681 /** 3682 * Request the scroller to abort any ongoing animation 3683 * 3684 * @hide 3685 */ 3686 public void stopScroll() { 3687 mScroller.forceFinished(true); 3688 mLastVelocity = 0; 3689 } 3690 3691 @Override 3692 public void computeScroll() { 3693 if (mScroller.computeScrollOffset()) { 3694 int oldX = mScrollX; 3695 int oldY = mScrollY; 3696 int x = mScroller.getCurrX(); 3697 int y = mScroller.getCurrY(); 3698 invalidate(); // So we draw again 3699 3700 if (!mScroller.isFinished()) { 3701 int rangeX = computeMaxScrollX(); 3702 int rangeY = computeMaxScrollY(); 3703 int overflingDistance = mOverflingDistance; 3704 3705 // Use the layer's scroll data if needed. 3706 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3707 oldX = mScrollingLayerRect.left; 3708 oldY = mScrollingLayerRect.top; 3709 rangeX = mScrollingLayerRect.right; 3710 rangeY = mScrollingLayerRect.bottom; 3711 // No overscrolling for layers. 3712 overflingDistance = 0; 3713 } 3714 3715 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3716 rangeX, rangeY, 3717 overflingDistance, overflingDistance, false); 3718 3719 if (mOverScrollGlow != null) { 3720 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3721 } 3722 } else { 3723 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3724 mScrollX = x; 3725 mScrollY = y; 3726 } else { 3727 // Update the layer position instead of WebView. 3728 scrollLayerTo(x, y); 3729 } 3730 abortAnimation(); 3731 nativeSetIsScrolling(false); 3732 if (!mBlockWebkitViewMessages) { 3733 WebViewCore.resumePriority(); 3734 if (!mSelectingText) { 3735 WebViewCore.resumeUpdatePicture(mWebViewCore); 3736 } 3737 } 3738 if (oldX != mScrollX || oldY != mScrollY) { 3739 sendOurVisibleRect(); 3740 } 3741 } 3742 } else { 3743 super.computeScroll(); 3744 } 3745 } 3746 3747 private void scrollLayerTo(int x, int y) { 3748 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3749 return; 3750 } 3751 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 3752 mScrollingLayerRect.left = x; 3753 mScrollingLayerRect.top = y; 3754 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 3755 invalidate(); 3756 } 3757 3758 private static int computeDuration(int dx, int dy) { 3759 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3760 int duration = distance * 1000 / STD_SPEED; 3761 return Math.min(duration, MAX_DURATION); 3762 } 3763 3764 // helper to pin the scrollBy parameters (already in view coordinates) 3765 // returns true if the scroll was changed 3766 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3767 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3768 } 3769 // helper to pin the scrollTo parameters (already in view coordinates) 3770 // returns true if the scroll was changed 3771 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3772 x = pinLocX(x); 3773 y = pinLocY(y); 3774 int dx = x - mScrollX; 3775 int dy = y - mScrollY; 3776 3777 if ((dx | dy) == 0) { 3778 return false; 3779 } 3780 abortAnimation(); 3781 if (animate) { 3782 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3783 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3784 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3785 awakenScrollBars(mScroller.getDuration()); 3786 invalidate(); 3787 } else { 3788 scrollTo(x, y); 3789 } 3790 return true; 3791 } 3792 3793 // Scale from content to view coordinates, and pin. 3794 // Also called by jni webview.cpp 3795 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3796 if (mDrawHistory) { 3797 // disallow WebView to change the scroll position as History Picture 3798 // is used in the view system. 3799 // TODO: as we switchOutDrawHistory when trackball or navigation 3800 // keys are hit, this should be safe. Right? 3801 return false; 3802 } 3803 cx = contentToViewDimension(cx); 3804 cy = contentToViewDimension(cy); 3805 if (mHeightCanMeasure) { 3806 // move our visible rect according to scroll request 3807 if (cy != 0) { 3808 Rect tempRect = new Rect(); 3809 calcOurVisibleRect(tempRect); 3810 tempRect.offset(cx, cy); 3811 requestRectangleOnScreen(tempRect); 3812 } 3813 // FIXME: We scroll horizontally no matter what because currently 3814 // ScrollView and ListView will not scroll horizontally. 3815 // FIXME: Why do we only scroll horizontally if there is no 3816 // vertical scroll? 3817// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3818 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3819 } else { 3820 return pinScrollBy(cx, cy, animate, 0); 3821 } 3822 } 3823 3824 /** 3825 * Called by CallbackProxy when the page starts loading. 3826 * @param url The URL of the page which has started loading. 3827 */ 3828 /* package */ void onPageStarted(String url) { 3829 // every time we start a new page, we want to reset the 3830 // WebView certificate: if the new site is secure, we 3831 // will reload it and get a new certificate set; 3832 // if the new site is not secure, the certificate must be 3833 // null, and that will be the case 3834 setCertificate(null); 3835 3836 // reset the flag since we set to true in if need after 3837 // loading is see onPageFinished(Url) 3838 mAccessibilityScriptInjected = false; 3839 } 3840 3841 /** 3842 * Called by CallbackProxy when the page finishes loading. 3843 * @param url The URL of the page which has finished loading. 3844 */ 3845 /* package */ void onPageFinished(String url) { 3846 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3847 // If the user is now on a different page, or has scrolled the page 3848 // past the point where the title bar is offscreen, ignore the 3849 // scroll request. 3850 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3851 && mScrollX == 0 && mScrollY == 0) { 3852 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3853 SLIDE_TITLE_DURATION); 3854 } 3855 mPageThatNeedsToSlideTitleBarOffScreen = null; 3856 } 3857 mZoomManager.onPageFinished(url); 3858 injectAccessibilityForUrl(url); 3859 } 3860 3861 /** 3862 * This method injects accessibility in the loaded document if accessibility 3863 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3864 * If no URL specific script is found or JavaScript is disabled we fallback to 3865 * the default {@link AccessibilityInjector} implementation. 3866 * </p> 3867 * If the URL has the "axs" paramter set to 1 it has already done the 3868 * script injection so we do nothing. If the parameter is set to 0 3869 * the URL opts out accessibility script injection so we fall back to 3870 * the default {@link AccessibilityInjector}. 3871 * </p> 3872 * Note: If the user has not opted-in the accessibility script injection no scripts 3873 * are injected rather the default {@link AccessibilityInjector} implementation 3874 * is used. 3875 * 3876 * @param url The URL loaded by this {@link WebView}. 3877 */ 3878 private void injectAccessibilityForUrl(String url) { 3879 if (mWebViewCore == null) { 3880 return; 3881 } 3882 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3883 3884 if (!accessibilityManager.isEnabled()) { 3885 // it is possible that accessibility was turned off between reloads 3886 ensureAccessibilityScriptInjectorInstance(false); 3887 return; 3888 } 3889 3890 if (!getSettings().getJavaScriptEnabled()) { 3891 // no JS so we fallback to the basic buil-in support 3892 ensureAccessibilityScriptInjectorInstance(true); 3893 return; 3894 } 3895 3896 // check the URL "axs" parameter to choose appropriate action 3897 int axsParameterValue = getAxsUrlParameterValue(url); 3898 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3899 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3900 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3901 if (onDeviceScriptInjectionEnabled) { 3902 ensureAccessibilityScriptInjectorInstance(false); 3903 // neither script injected nor script injection opted out => we inject 3904 loadUrl(getScreenReaderInjectingJs()); 3905 // TODO: Set this flag after successfull script injection. Maybe upon injection 3906 // the chooser should update the meta tag and we check it to declare success 3907 mAccessibilityScriptInjected = true; 3908 } else { 3909 // injection disabled so we fallback to the basic built-in support 3910 ensureAccessibilityScriptInjectorInstance(true); 3911 } 3912 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3913 // injection opted out so we fallback to the basic buil-in support 3914 ensureAccessibilityScriptInjectorInstance(true); 3915 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3916 ensureAccessibilityScriptInjectorInstance(false); 3917 // the URL provides accessibility but we still need to add our generic script 3918 loadUrl(getScreenReaderInjectingJs()); 3919 } else { 3920 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3921 } 3922 } 3923 3924 /** 3925 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3926 * 3927 * @param present True to ensure an insance, false to ensure no instance. 3928 */ 3929 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3930 if (present) { 3931 if (mAccessibilityInjector == null) { 3932 mAccessibilityInjector = new AccessibilityInjector(this); 3933 } 3934 } else { 3935 mAccessibilityInjector = null; 3936 } 3937 } 3938 3939 /** 3940 * Gets JavaScript that injects a screen-reader. 3941 * 3942 * @return The JavaScript snippet. 3943 */ 3944 private String getScreenReaderInjectingJs() { 3945 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 3946 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 3947 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 3948 } 3949 3950 /** 3951 * Gets the "axs" URL parameter value. 3952 * 3953 * @param url A url to fetch the paramter from. 3954 * @return The parameter value if such, -1 otherwise. 3955 */ 3956 private int getAxsUrlParameterValue(String url) { 3957 if (mMatchAxsUrlParameterPattern == null) { 3958 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3959 } 3960 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3961 if (matcher.find()) { 3962 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3963 return Integer.parseInt(keyValuePair.split("=")[1]); 3964 } 3965 return -1; 3966 } 3967 3968 /** 3969 * The URL of a page that sent a message to scroll the title bar off screen. 3970 * 3971 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3972 * title bar off the screen. Sometimes, the scroll position is set before 3973 * the page finishes loading. Rather than scrolling while the page is still 3974 * loading, keep track of the URL and new scroll position so we can perform 3975 * the scroll once the page finishes loading. 3976 */ 3977 private String mPageThatNeedsToSlideTitleBarOffScreen; 3978 3979 /** 3980 * The destination Y scroll position to be used when the page finishes 3981 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3982 */ 3983 private int mYDistanceToSlideTitleOffScreen; 3984 3985 // scale from content to view coordinates, and pin 3986 // return true if pin caused the final x/y different than the request cx/cy, 3987 // and a future scroll may reach the request cx/cy after our size has 3988 // changed 3989 // return false if the view scroll to the exact position as it is requested, 3990 // where negative numbers are taken to mean 0 3991 private boolean setContentScrollTo(int cx, int cy) { 3992 if (mDrawHistory) { 3993 // disallow WebView to change the scroll position as History Picture 3994 // is used in the view system. 3995 // One known case where this is called is that WebCore tries to 3996 // restore the scroll position. As history Picture already uses the 3997 // saved scroll position, it is ok to skip this. 3998 return false; 3999 } 4000 int vx; 4001 int vy; 4002 if ((cx | cy) == 0) { 4003 // If the page is being scrolled to (0,0), do not add in the title 4004 // bar's height, and simply scroll to (0,0). (The only other work 4005 // in contentToView_ is to multiply, so this would not change 0.) 4006 vx = 0; 4007 vy = 0; 4008 } else { 4009 vx = contentToViewX(cx); 4010 vy = contentToViewY(cy); 4011 } 4012// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 4013// vx + " " + vy + "]"); 4014 // Some mobile sites attempt to scroll the title bar off the page by 4015 // scrolling to (0,1). If we are at the top left corner of the 4016 // page, assume this is an attempt to scroll off the title bar, and 4017 // animate the title bar off screen slowly enough that the user can see 4018 // it. 4019 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 4020 && mTitleBar != null) { 4021 // FIXME: 100 should be defined somewhere as our max progress. 4022 if (getProgress() < 100) { 4023 // Wait to scroll the title bar off screen until the page has 4024 // finished loading. Keep track of the URL and the destination 4025 // Y position 4026 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 4027 mYDistanceToSlideTitleOffScreen = vy; 4028 } else { 4029 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 4030 } 4031 // Since we are animating, we have not yet reached the desired 4032 // scroll position. Do not return true to request another attempt 4033 return false; 4034 } 4035 pinScrollTo(vx, vy, false, 0); 4036 // If the request was to scroll to a negative coordinate, treat it as if 4037 // it was a request to scroll to 0 4038 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 4039 return true; 4040 } else { 4041 return false; 4042 } 4043 } 4044 4045 // scale from content to view coordinates, and pin 4046 private void spawnContentScrollTo(int cx, int cy) { 4047 if (mDrawHistory) { 4048 // disallow WebView to change the scroll position as History Picture 4049 // is used in the view system. 4050 return; 4051 } 4052 int vx = contentToViewX(cx); 4053 int vy = contentToViewY(cy); 4054 pinScrollTo(vx, vy, true, 0); 4055 } 4056 4057 /** 4058 * These are from webkit, and are in content coordinate system (unzoomed) 4059 */ 4060 private void contentSizeChanged(boolean updateLayout) { 4061 // suppress 0,0 since we usually see real dimensions soon after 4062 // this avoids drawing the prev content in a funny place. If we find a 4063 // way to consolidate these notifications, this check may become 4064 // obsolete 4065 if ((mContentWidth | mContentHeight) == 0) { 4066 return; 4067 } 4068 4069 if (mHeightCanMeasure) { 4070 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 4071 || updateLayout) { 4072 requestLayout(); 4073 } 4074 } else if (mWidthCanMeasure) { 4075 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 4076 || updateLayout) { 4077 requestLayout(); 4078 } 4079 } else { 4080 // If we don't request a layout, try to send our view size to the 4081 // native side to ensure that WebCore has the correct dimensions. 4082 sendViewSizeZoom(false); 4083 } 4084 } 4085 4086 /** 4087 * Set the WebViewClient that will receive various notifications and 4088 * requests. This will replace the current handler. 4089 * @param client An implementation of WebViewClient. 4090 */ 4091 public void setWebViewClient(WebViewClient client) { 4092 checkThread(); 4093 mCallbackProxy.setWebViewClient(client); 4094 } 4095 4096 /** 4097 * Gets the WebViewClient 4098 * @return the current WebViewClient instance. 4099 * 4100 * @hide This is an implementation detail. 4101 */ 4102 public WebViewClient getWebViewClient() { 4103 return mCallbackProxy.getWebViewClient(); 4104 } 4105 4106 /** 4107 * Register the interface to be used when content can not be handled by 4108 * the rendering engine, and should be downloaded instead. This will replace 4109 * the current handler. 4110 * @param listener An implementation of DownloadListener. 4111 */ 4112 public void setDownloadListener(DownloadListener listener) { 4113 checkThread(); 4114 mCallbackProxy.setDownloadListener(listener); 4115 } 4116 4117 /** 4118 * Set the chrome handler. This is an implementation of WebChromeClient for 4119 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4120 * This will replace the current handler. 4121 * @param client An implementation of WebChromeClient. 4122 */ 4123 public void setWebChromeClient(WebChromeClient client) { 4124 checkThread(); 4125 mCallbackProxy.setWebChromeClient(client); 4126 } 4127 4128 /** 4129 * Gets the chrome handler. 4130 * @return the current WebChromeClient instance. 4131 * 4132 * @hide This is an implementation detail. 4133 */ 4134 public WebChromeClient getWebChromeClient() { 4135 return mCallbackProxy.getWebChromeClient(); 4136 } 4137 4138 /** 4139 * Set the back/forward list client. This is an implementation of 4140 * WebBackForwardListClient for handling new items and changes in the 4141 * history index. 4142 * @param client An implementation of WebBackForwardListClient. 4143 * {@hide} 4144 */ 4145 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4146 mCallbackProxy.setWebBackForwardListClient(client); 4147 } 4148 4149 /** 4150 * Gets the WebBackForwardListClient. 4151 * {@hide} 4152 */ 4153 public WebBackForwardListClient getWebBackForwardListClient() { 4154 return mCallbackProxy.getWebBackForwardListClient(); 4155 } 4156 4157 /** 4158 * Set the Picture listener. This is an interface used to receive 4159 * notifications of a new Picture. 4160 * @param listener An implementation of WebView.PictureListener. 4161 * @deprecated This method is now obsolete. 4162 */ 4163 @Deprecated 4164 public void setPictureListener(PictureListener listener) { 4165 checkThread(); 4166 mPictureListener = listener; 4167 } 4168 4169 /** 4170 * {@hide} 4171 */ 4172 /* FIXME: Debug only! Remove for SDK! */ 4173 public void externalRepresentation(Message callback) { 4174 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4175 } 4176 4177 /** 4178 * {@hide} 4179 */ 4180 /* FIXME: Debug only! Remove for SDK! */ 4181 public void documentAsText(Message callback) { 4182 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4183 } 4184 4185 /** 4186 * This method injects the supplied Java object into the WebView. The 4187 * object is injected into the JavaScript context of the main frame, using 4188 * the supplied name. This allows the Java object to be accessed from 4189 * JavaScript. Note that that injected objects will not appear in 4190 * JavaScript until the page is next (re)loaded. For example: 4191 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4192 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4193 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4194 * <p><strong>IMPORTANT:</strong> 4195 * <ul> 4196 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4197 * the host application. This is a powerful feature, but also presents a 4198 * security risk. Use of this method in a WebView containing untrusted 4199 * content could allow an attacker to manipulate the host application in 4200 * unintended ways, executing Java code with the permissions of the host 4201 * application. Use extreme care when using this method in a WebView which 4202 * could contain untrusted content. 4203 * <li> JavaScript interacts with Java object on a private, background 4204 * thread of the WebView. Care is therefore required to maintain thread 4205 * safety.</li> 4206 * </ul></p> 4207 * @param object The Java object to inject into the WebView's JavaScript 4208 * context. Null values are ignored. 4209 * @param name The name used to expose the instance in JavaScript. 4210 */ 4211 public void addJavascriptInterface(Object object, String name) { 4212 checkThread(); 4213 if (object == null) { 4214 return; 4215 } 4216 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4217 arg.mObject = object; 4218 arg.mInterfaceName = name; 4219 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4220 } 4221 4222 /** 4223 * Removes a previously added JavaScript interface with the given name. 4224 * @param interfaceName The name of the interface to remove. 4225 */ 4226 public void removeJavascriptInterface(String interfaceName) { 4227 checkThread(); 4228 if (mWebViewCore != null) { 4229 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4230 arg.mInterfaceName = interfaceName; 4231 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4232 } 4233 } 4234 4235 /** 4236 * Return the WebSettings object used to control the settings for this 4237 * WebView. 4238 * @return A WebSettings object that can be used to control this WebView's 4239 * settings. 4240 */ 4241 public WebSettings getSettings() { 4242 checkThread(); 4243 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4244 } 4245 4246 /** 4247 * Return the list of currently loaded plugins. 4248 * @return The list of currently loaded plugins. 4249 * 4250 * @hide 4251 * @deprecated This was used for Gears, which has been deprecated. 4252 */ 4253 @Deprecated 4254 public static synchronized PluginList getPluginList() { 4255 checkThread(); 4256 return new PluginList(); 4257 } 4258 4259 /** 4260 * @hide 4261 * @deprecated This was used for Gears, which has been deprecated. 4262 */ 4263 @Deprecated 4264 public void refreshPlugins(boolean reloadOpenPages) { 4265 checkThread(); 4266 } 4267 4268 //------------------------------------------------------------------------- 4269 // Override View methods 4270 //------------------------------------------------------------------------- 4271 4272 @Override 4273 protected void finalize() throws Throwable { 4274 try { 4275 if (mNativeClass != 0) { 4276 mPrivateHandler.post(new Runnable() { 4277 @Override 4278 public void run() { 4279 destroy(); 4280 } 4281 }); 4282 } 4283 } finally { 4284 super.finalize(); 4285 } 4286 } 4287 4288 @Override 4289 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4290 if (child == mTitleBar) { 4291 // When drawing the title bar, move it horizontally to always show 4292 // at the top of the WebView. 4293 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4294 int newTop = 0; 4295 if (mTitleGravity == Gravity.NO_GRAVITY) { 4296 newTop = Math.min(0, mScrollY); 4297 } else if (mTitleGravity == Gravity.TOP) { 4298 newTop = mScrollY; 4299 } 4300 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4301 mTitleBar.setTop(newTop); 4302 } 4303 return super.drawChild(canvas, child, drawingTime); 4304 } 4305 4306 private void drawContent(Canvas canvas, boolean drawRings) { 4307 drawCoreAndCursorRing(canvas, mBackgroundColor, 4308 mDrawCursorRing && drawRings); 4309 } 4310 4311 /** 4312 * Draw the background when beyond bounds 4313 * @param canvas Canvas to draw into 4314 */ 4315 private void drawOverScrollBackground(Canvas canvas) { 4316 if (mOverScrollBackground == null) { 4317 mOverScrollBackground = new Paint(); 4318 Bitmap bm = BitmapFactory.decodeResource( 4319 mContext.getResources(), 4320 com.android.internal.R.drawable.status_bar_background); 4321 mOverScrollBackground.setShader(new BitmapShader(bm, 4322 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4323 mOverScrollBorder = new Paint(); 4324 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4325 mOverScrollBorder.setStrokeWidth(0); 4326 mOverScrollBorder.setColor(0xffbbbbbb); 4327 } 4328 4329 int top = 0; 4330 int right = computeRealHorizontalScrollRange(); 4331 int bottom = top + computeRealVerticalScrollRange(); 4332 // first draw the background and anchor to the top of the view 4333 canvas.save(); 4334 canvas.translate(mScrollX, mScrollY); 4335 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4336 - mScrollY, Region.Op.DIFFERENCE); 4337 canvas.drawPaint(mOverScrollBackground); 4338 canvas.restore(); 4339 // then draw the border 4340 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4341 // next clip the region for the content 4342 canvas.clipRect(0, top, right, bottom); 4343 } 4344 4345 @Override 4346 protected void onDraw(Canvas canvas) { 4347 if (inFullScreenMode()) { 4348 return; // no need to draw anything if we aren't visible. 4349 } 4350 // if mNativeClass is 0, the WebView is either destroyed or not 4351 // initialized. In either case, just draw the background color and return 4352 if (mNativeClass == 0) { 4353 canvas.drawColor(mBackgroundColor); 4354 return; 4355 } 4356 4357 // if both mContentWidth and mContentHeight are 0, it means there is no 4358 // valid Picture passed to WebView yet. This can happen when WebView 4359 // just starts. Draw the background and return. 4360 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4361 canvas.drawColor(mBackgroundColor); 4362 return; 4363 } 4364 4365 if (canvas.isHardwareAccelerated()) { 4366 if (mIncrementEGLContextHack == false) { 4367 mIncrementEGLContextHack = true; 4368 EGL10 egl = (EGL10) EGLContext.getEGL(); 4369 EGLDisplay eglDisplay = egl.eglGetDisplay(EGL_DEFAULT_DISPLAY); 4370 int[] version = new int[2]; 4371 egl.eglInitialize(eglDisplay, version); 4372 } 4373 mZoomManager.setHardwareAccelerated(); 4374 } 4375 4376 int saveCount = canvas.save(); 4377 if (mInOverScrollMode && !getSettings() 4378 .getUseWebViewBackgroundForOverscrollBackground()) { 4379 drawOverScrollBackground(canvas); 4380 } 4381 if (mTitleBar != null) { 4382 canvas.translate(0, getTitleHeight()); 4383 } 4384 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4385 && (mTouchMode == TOUCH_INIT_MODE 4386 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4387 || mTouchMode == TOUCH_SHORTPRESS_MODE 4388 || mTouchMode == TOUCH_DONE_MODE); 4389 boolean drawNativeRings = !drawJavaRings; 4390 if (sDisableNavcache) { 4391 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4392 } 4393 drawContent(canvas, drawNativeRings); 4394 canvas.restoreToCount(saveCount); 4395 4396 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4397 invalidate(); 4398 } 4399 mWebViewCore.signalRepaintDone(); 4400 4401 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4402 invalidate(); 4403 } 4404 4405 // paint the highlight in the end 4406 if (drawJavaRings) { 4407 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4408 if (delay < ViewConfiguration.getTapTimeout()) { 4409 Rect r = mTouchHighlightRegion.getBounds(); 4410 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4411 } else { 4412 if (mTouchHightlightPaint == null) { 4413 mTouchHightlightPaint = new Paint(); 4414 mTouchHightlightPaint.setColor(HIGHLIGHT_COLOR); 4415 } 4416 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4417 Rect r = new Rect(); 4418 while (iter.next(r)) { 4419 canvas.drawRect(r, mTouchHightlightPaint); 4420 } 4421 } 4422 } 4423 if (DEBUG_TOUCH_HIGHLIGHT) { 4424 if (getSettings().getNavDump()) { 4425 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4426 if (mTouchCrossHairColor == null) { 4427 mTouchCrossHairColor = new Paint(); 4428 mTouchCrossHairColor.setColor(Color.RED); 4429 } 4430 canvas.drawLine(mTouchHighlightX - mNavSlop, 4431 mTouchHighlightY - mNavSlop, mTouchHighlightX 4432 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4433 + 1, mTouchCrossHairColor); 4434 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4435 mTouchHighlightY - mNavSlop, mTouchHighlightX 4436 - mNavSlop, 4437 mTouchHighlightY + mNavSlop + 1, 4438 mTouchCrossHairColor); 4439 } 4440 } 4441 } 4442 } 4443 4444 private void removeTouchHighlight() { 4445 mWebViewCore.removeMessages(EventHub.HIT_TEST); 4446 mPrivateHandler.removeMessages(HIT_TEST_RESULT); 4447 setTouchHighlightRects(null); 4448 } 4449 4450 @Override 4451 public void setLayoutParams(ViewGroup.LayoutParams params) { 4452 if (params.height == LayoutParams.WRAP_CONTENT) { 4453 mWrapContent = true; 4454 } 4455 super.setLayoutParams(params); 4456 } 4457 4458 @Override 4459 public boolean performLongClick() { 4460 // performLongClick() is the result of a delayed message. If we switch 4461 // to windows overview, the WebView will be temporarily removed from the 4462 // view system. In that case, do nothing. 4463 if (getParent() == null) return false; 4464 4465 // A multi-finger gesture can look like a long press; make sure we don't take 4466 // long press actions if we're scaling. 4467 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4468 if (detector != null && detector.isInProgress()) { 4469 return false; 4470 } 4471 4472 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4473 // Send the click so that the textfield is in focus 4474 centerKeyPressOnTextField(); 4475 rebuildWebTextView(); 4476 } else { 4477 clearTextEntry(); 4478 } 4479 if (inEditingMode()) { 4480 // Since we just called rebuildWebTextView, the layout is not set 4481 // properly. Update it so it can correctly find the word to select. 4482 mWebTextView.ensureLayout(); 4483 // Provide a touch down event to WebTextView, which will allow it 4484 // to store the location to use in performLongClick. 4485 AbsoluteLayout.LayoutParams params 4486 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4487 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4488 mLastTouchTime, MotionEvent.ACTION_DOWN, 4489 mLastTouchX - params.x + mScrollX, 4490 mLastTouchY - params.y + mScrollY, 0); 4491 mWebTextView.dispatchTouchEvent(fake); 4492 return mWebTextView.performLongClick(); 4493 } 4494 if (mSelectingText) return false; // long click does nothing on selection 4495 /* if long click brings up a context menu, the super function 4496 * returns true and we're done. Otherwise, nothing happened when 4497 * the user clicked. */ 4498 if (super.performLongClick()) { 4499 return true; 4500 } 4501 /* In the case where the application hasn't already handled the long 4502 * click action, look for a word under the click. If one is found, 4503 * animate the text selection into view. 4504 * FIXME: no animation code yet */ 4505 final boolean isSelecting = selectText(); 4506 if (isSelecting) { 4507 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4508 } 4509 return isSelecting; 4510 } 4511 4512 /** 4513 * Select the word at the last click point. 4514 * 4515 * @hide This is an implementation detail. 4516 */ 4517 public boolean selectText() { 4518 int x = viewToContentX(mLastTouchX + mScrollX); 4519 int y = viewToContentY(mLastTouchY + mScrollY); 4520 return selectText(x, y); 4521 } 4522 4523 /** 4524 * Select the word at the indicated content coordinates. 4525 */ 4526 boolean selectText(int x, int y) { 4527 if (!setUpSelect(true, x, y)) { 4528 return false; 4529 } 4530 nativeSetExtendSelection(); 4531 mDrawSelectionPointer = false; 4532 mTouchMode = TOUCH_DRAG_MODE; 4533 return true; 4534 } 4535 4536 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4537 4538 @Override 4539 protected void onConfigurationChanged(Configuration newConfig) { 4540 mCachedOverlappingActionModeHeight = -1; 4541 if (mSelectingText && mOrientation != newConfig.orientation) { 4542 selectionDone(); 4543 } 4544 mOrientation = newConfig.orientation; 4545 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4546 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4547 } 4548 } 4549 4550 /** 4551 * Keep track of the Callback so we can end its ActionMode or remove its 4552 * titlebar. 4553 */ 4554 private SelectActionModeCallback mSelectCallback; 4555 4556 // These values are possible options for didUpdateWebTextViewDimensions. 4557 private static final int FULLY_ON_SCREEN = 0; 4558 private static final int INTERSECTS_SCREEN = 1; 4559 private static final int ANYWHERE = 2; 4560 4561 /** 4562 * Check to see if the focused textfield/textarea is still on screen. If it 4563 * is, update the the dimensions and location of WebTextView. Otherwise, 4564 * remove the WebTextView. Should be called when the zoom level changes. 4565 * @param intersection How to determine whether the textfield/textarea is 4566 * still on screen. 4567 * @return boolean True if the textfield/textarea is still on screen and the 4568 * dimensions/location of WebTextView have been updated. 4569 */ 4570 private boolean didUpdateWebTextViewDimensions(int intersection) { 4571 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4572 Rect vBox = contentToViewRect(contentBounds); 4573 Rect visibleRect = new Rect(); 4574 calcOurVisibleRect(visibleRect); 4575 offsetByLayerScrollPosition(vBox); 4576 // If the textfield is on screen, place the WebTextView in 4577 // its new place, accounting for our new scroll/zoom values, 4578 // and adjust its textsize. 4579 boolean onScreen; 4580 switch (intersection) { 4581 case FULLY_ON_SCREEN: 4582 onScreen = visibleRect.contains(vBox); 4583 break; 4584 case INTERSECTS_SCREEN: 4585 onScreen = Rect.intersects(visibleRect, vBox); 4586 break; 4587 case ANYWHERE: 4588 onScreen = true; 4589 break; 4590 default: 4591 throw new AssertionError( 4592 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4593 } 4594 if (onScreen) { 4595 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4596 vBox.height()); 4597 mWebTextView.updateTextSize(); 4598 updateWebTextViewPadding(); 4599 return true; 4600 } else { 4601 // The textfield is now off screen. The user probably 4602 // was not zooming to see the textfield better. Remove 4603 // the WebTextView. If the user types a key, and the 4604 // textfield is still in focus, we will reconstruct 4605 // the WebTextView and scroll it back on screen. 4606 mWebTextView.remove(); 4607 return false; 4608 } 4609 } 4610 4611 private void offsetByLayerScrollPosition(Rect box) { 4612 if ((mCurrentScrollingLayerId != 0) 4613 && (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) { 4614 box.offsetTo(box.left - mScrollingLayerRect.left, 4615 box.top - mScrollingLayerRect.top); 4616 } 4617 } 4618 4619 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4620 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4621 if (mNativeClass == 0) 4622 return; 4623 nativeSetBaseLayer(mNativeClass, layer, invalRegion, showVisualIndicator, 4624 isPictureAfterFirstLayout, registerPageSwapCallback); 4625 if (mHTML5VideoViewProxy != null) { 4626 mHTML5VideoViewProxy.setBaseLayer(layer); 4627 } 4628 } 4629 4630 int getBaseLayer() { 4631 if (mNativeClass == 0) { 4632 return 0; 4633 } 4634 return nativeGetBaseLayer(); 4635 } 4636 4637 private void onZoomAnimationStart() { 4638 // If it is in password mode, turn it off so it does not draw misplaced. 4639 if (inEditingMode()) { 4640 mWebTextView.setVisibility(INVISIBLE); 4641 } 4642 } 4643 4644 private void onZoomAnimationEnd() { 4645 // adjust the edit text view if needed 4646 if (inEditingMode() 4647 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4648 // If it is a password field, start drawing the WebTextView once 4649 // again. 4650 mWebTextView.setVisibility(VISIBLE); 4651 } 4652 } 4653 4654 void onFixedLengthZoomAnimationStart() { 4655 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4656 onZoomAnimationStart(); 4657 } 4658 4659 void onFixedLengthZoomAnimationEnd() { 4660 if (!mBlockWebkitViewMessages && !mSelectingText) { 4661 WebViewCore.resumeUpdatePicture(mWebViewCore); 4662 } 4663 onZoomAnimationEnd(); 4664 } 4665 4666 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4667 Paint.DITHER_FLAG | 4668 Paint.SUBPIXEL_TEXT_FLAG; 4669 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4670 Paint.DITHER_FLAG; 4671 4672 private final DrawFilter mZoomFilter = 4673 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4674 // If we need to trade better quality for speed, set mScrollFilter to null 4675 private final DrawFilter mScrollFilter = 4676 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4677 4678 private void drawCoreAndCursorRing(Canvas canvas, int color, 4679 boolean drawCursorRing) { 4680 if (mDrawHistory) { 4681 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4682 canvas.drawPicture(mHistoryPicture); 4683 return; 4684 } 4685 if (mNativeClass == 0) return; 4686 4687 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4688 boolean animateScroll = ((!mScroller.isFinished() 4689 || mVelocityTracker != null) 4690 && (mTouchMode != TOUCH_DRAG_MODE || 4691 mHeldMotionless != MOTIONLESS_TRUE)) 4692 || mDeferTouchMode == TOUCH_DRAG_MODE; 4693 if (mTouchMode == TOUCH_DRAG_MODE) { 4694 if (mHeldMotionless == MOTIONLESS_PENDING) { 4695 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4696 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4697 mHeldMotionless = MOTIONLESS_FALSE; 4698 } 4699 if (mHeldMotionless == MOTIONLESS_FALSE) { 4700 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4701 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4702 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4703 .obtainMessage(AWAKEN_SCROLL_BARS), 4704 ViewConfiguration.getScrollDefaultDelay()); 4705 mHeldMotionless = MOTIONLESS_PENDING; 4706 } 4707 } 4708 int saveCount = canvas.save(); 4709 if (animateZoom) { 4710 mZoomManager.animateZoom(canvas); 4711 } else if (!canvas.isHardwareAccelerated()) { 4712 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4713 } 4714 4715 boolean UIAnimationsRunning = false; 4716 // Currently for each draw we compute the animation values; 4717 // We may in the future decide to do that independently. 4718 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 4719 && nativeEvaluateLayersAnimations(mNativeClass)) { 4720 UIAnimationsRunning = true; 4721 // If we have unfinished (or unstarted) animations, 4722 // we ask for a repaint. We only need to do this in software 4723 // rendering (with hardware rendering we already have a different 4724 // method of requesting a repaint) 4725 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 4726 invalidate(); 4727 } 4728 4729 // decide which adornments to draw 4730 int extras = DRAW_EXTRAS_NONE; 4731 if (mFindIsUp) { 4732 extras = DRAW_EXTRAS_FIND; 4733 } else if (mSelectingText && (!USE_JAVA_TEXT_SELECTION || DEBUG_TEXT_HANDLES)) { 4734 extras = DRAW_EXTRAS_SELECTION; 4735 nativeSetSelectionPointer(mNativeClass, 4736 mDrawSelectionPointer, 4737 mZoomManager.getInvScale(), mSelectX, mSelectY - getTitleHeight()); 4738 } else if (drawCursorRing) { 4739 extras = DRAW_EXTRAS_CURSOR_RING; 4740 } 4741 if (DebugFlags.WEB_VIEW) { 4742 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4743 + " mSelectingText=" + mSelectingText 4744 + " nativePageShouldHandleShiftAndArrows()=" 4745 + nativePageShouldHandleShiftAndArrows() 4746 + " animateZoom=" + animateZoom 4747 + " extras=" + extras); 4748 } 4749 4750 calcOurContentVisibleRectF(mVisibleContentRect); 4751 if (canvas.isHardwareAccelerated()) { 4752 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4753 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4754 4755 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4756 viewRectViewport, mVisibleContentRect, getScale(), extras); 4757 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4758 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4759 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4760 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4761 } 4762 4763 } else { 4764 DrawFilter df = null; 4765 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4766 df = mZoomFilter; 4767 } else if (animateScroll) { 4768 df = mScrollFilter; 4769 } 4770 canvas.setDrawFilter(df); 4771 // XXX: Revisit splitting content. Right now it causes a 4772 // synchronization problem with layers. 4773 int content = nativeDraw(canvas, mVisibleContentRect, color, 4774 extras, false); 4775 canvas.setDrawFilter(null); 4776 if (!mBlockWebkitViewMessages && content != 0) { 4777 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4778 } 4779 } 4780 4781 canvas.restoreToCount(saveCount); 4782 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4783 drawTextSelectionHandles(canvas); 4784 } 4785 4786 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4787 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4788 mTouchMode = TOUCH_SHORTPRESS_MODE; 4789 } 4790 } 4791 if (mFocusSizeChanged) { 4792 mFocusSizeChanged = false; 4793 // If we are zooming, this will get handled above, when the zoom 4794 // finishes. We also do not need to do this unless the WebTextView 4795 // is showing. With hardware acceleration, the pageSwapCallback() 4796 // updates the WebTextView position in sync with page swapping 4797 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4798 didUpdateWebTextViewDimensions(ANYWHERE); 4799 } 4800 } 4801 } 4802 4803 private void drawTextSelectionHandles(Canvas canvas) { 4804 if (mTextSelectionPaint == null) { 4805 mTextSelectionPaint = new Paint(); 4806 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4807 } 4808 mTextSelectionRegion.setEmpty(); 4809 nativeGetTextSelectionRegion(mNativeClass, mTextSelectionRegion); 4810 Rect r = new Rect(); 4811 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4812 Rect clip = canvas.getClipBounds(); 4813 while (iter.next(r)) { 4814 r.set(contentToViewDimension(r.left), 4815 contentToViewDimension(r.top), 4816 contentToViewDimension(r.right), 4817 contentToViewDimension(r.bottom)); 4818 if (r.intersect(clip)) { 4819 canvas.drawRect(r, mTextSelectionPaint); 4820 } 4821 } 4822 if (mSelectHandleLeft == null) { 4823 mSelectHandleLeft = mContext.getResources().getDrawable( 4824 com.android.internal.R.drawable.text_select_handle_left); 4825 } 4826 int[] handles = new int[4]; 4827 nativeGetSelectionHandles(mNativeClass, handles); 4828 int start_x = contentToViewDimension(handles[0]); 4829 int start_y = contentToViewDimension(handles[1]); 4830 int end_x = contentToViewDimension(handles[2]); 4831 int end_y = contentToViewDimension(handles[3]); 4832 // Magic formula copied from TextView 4833 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4834 mSelectHandleLeft.setBounds(start_x, start_y, 4835 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4836 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4837 if (mSelectHandleRight == null) { 4838 mSelectHandleRight = mContext.getResources().getDrawable( 4839 com.android.internal.R.drawable.text_select_handle_right); 4840 } 4841 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4842 mSelectHandleRight.setBounds(end_x, end_y, 4843 end_x + mSelectHandleRight.getIntrinsicWidth(), 4844 end_y + mSelectHandleRight.getIntrinsicHeight()); 4845 if (DEBUG_TEXT_HANDLES) { 4846 mSelectHandleLeft.setAlpha(125); 4847 mSelectHandleRight.setAlpha(125); 4848 } 4849 mSelectHandleLeft.draw(canvas); 4850 mSelectHandleRight.draw(canvas); 4851 } 4852 4853 // draw history 4854 private boolean mDrawHistory = false; 4855 private Picture mHistoryPicture = null; 4856 private int mHistoryWidth = 0; 4857 private int mHistoryHeight = 0; 4858 4859 // Only check the flag, can be called from WebCore thread 4860 boolean drawHistory() { 4861 return mDrawHistory; 4862 } 4863 4864 int getHistoryPictureWidth() { 4865 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4866 } 4867 4868 // Should only be called in UI thread 4869 void switchOutDrawHistory() { 4870 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4871 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4872 mDrawHistory = false; 4873 mHistoryPicture = null; 4874 invalidate(); 4875 int oldScrollX = mScrollX; 4876 int oldScrollY = mScrollY; 4877 mScrollX = pinLocX(mScrollX); 4878 mScrollY = pinLocY(mScrollY); 4879 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4880 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4881 } else { 4882 sendOurVisibleRect(); 4883 } 4884 } 4885 } 4886 4887 WebViewCore.CursorData cursorData() { 4888 WebViewCore.CursorData result = cursorDataNoPosition(); 4889 Point position = nativeCursorPosition(); 4890 result.mX = position.x; 4891 result.mY = position.y; 4892 return result; 4893 } 4894 4895 WebViewCore.CursorData cursorDataNoPosition() { 4896 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4897 result.mMoveGeneration = nativeMoveGeneration(); 4898 result.mFrame = nativeCursorFramePointer(); 4899 return result; 4900 } 4901 4902 /** 4903 * Delete text from start to end in the focused textfield. If there is no 4904 * focus, or if start == end, silently fail. If start and end are out of 4905 * order, swap them. 4906 * @param start Beginning of selection to delete. 4907 * @param end End of selection to delete. 4908 */ 4909 /* package */ void deleteSelection(int start, int end) { 4910 mTextGeneration++; 4911 WebViewCore.TextSelectionData data 4912 = new WebViewCore.TextSelectionData(start, end); 4913 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4914 data); 4915 } 4916 4917 /** 4918 * Set the selection to (start, end) in the focused textfield. If start and 4919 * end are out of order, swap them. 4920 * @param start Beginning of selection. 4921 * @param end End of selection. 4922 */ 4923 /* package */ void setSelection(int start, int end) { 4924 if (mWebViewCore != null) { 4925 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4926 } 4927 } 4928 4929 @Override 4930 public boolean onCheckIsTextEditor() { 4931 return true; 4932 } 4933 4934 @Override 4935 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4936 outAttrs.imeOptions = EditorInfo.IME_FLAG_NO_FULLSCREEN 4937 | EditorInfo.TYPE_CLASS_TEXT 4938 | EditorInfo.TYPE_TEXT_VARIATION_NORMAL; 4939 return mInputConnection; 4940 } 4941 4942 /** 4943 * Called in response to a message from webkit telling us that the soft 4944 * keyboard should be launched. 4945 */ 4946 private void displaySoftKeyboard(boolean isTextView) { 4947 InputMethodManager imm = (InputMethodManager) 4948 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4949 4950 // bring it back to the default level scale so that user can enter text 4951 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4952 if (zoom) { 4953 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4954 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4955 } 4956 if (isTextView) { 4957 rebuildWebTextView(); 4958 if (inEditingMode()) { 4959 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4960 if (zoom) { 4961 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4962 } 4963 return; 4964 } 4965 } 4966 // Used by plugins and contentEditable. 4967 // Also used if the navigation cache is out of date, and 4968 // does not recognize that a textfield is in focus. In that 4969 // case, use WebView as the targeted view. 4970 // see http://b/issue?id=2457459 4971 imm.showSoftInput(this, 0); 4972 } 4973 4974 // Called by WebKit to instruct the UI to hide the keyboard 4975 private void hideSoftKeyboard() { 4976 InputMethodManager imm = InputMethodManager.peekInstance(); 4977 if (imm != null && (imm.isActive(this) 4978 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4979 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4980 } 4981 } 4982 4983 /* 4984 * This method checks the current focus and cursor and potentially rebuilds 4985 * mWebTextView to have the appropriate properties, such as password, 4986 * multiline, and what text it contains. It also removes it if necessary. 4987 */ 4988 /* package */ void rebuildWebTextView() { 4989 // If the WebView does not have focus, do nothing until it gains focus. 4990 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4991 return; 4992 } 4993 boolean alreadyThere = inEditingMode(); 4994 // inEditingMode can only return true if mWebTextView is non-null, 4995 // so we can safely call remove() if (alreadyThere) 4996 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4997 if (alreadyThere) { 4998 mWebTextView.remove(); 4999 } 5000 return; 5001 } 5002 // At this point, we know we have found an input field, so go ahead 5003 // and create the WebTextView if necessary. 5004 if (mWebTextView == null) { 5005 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 5006 // Initialize our generation number. 5007 mTextGeneration = 0; 5008 } 5009 mWebTextView.updateTextSize(); 5010 updateWebTextViewPosition(); 5011 String text = nativeFocusCandidateText(); 5012 int nodePointer = nativeFocusCandidatePointer(); 5013 // This needs to be called before setType, which may call 5014 // requestFormData, and it needs to have the correct nodePointer. 5015 mWebTextView.setNodePointer(nodePointer); 5016 mWebTextView.setType(nativeFocusCandidateType()); 5017 // Gravity needs to be set after setType 5018 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 5019 if (null == text) { 5020 if (DebugFlags.WEB_VIEW) { 5021 Log.v(LOGTAG, "rebuildWebTextView null == text"); 5022 } 5023 text = ""; 5024 } 5025 mWebTextView.setTextAndKeepSelection(text); 5026 InputMethodManager imm = InputMethodManager.peekInstance(); 5027 if (imm != null && imm.isActive(mWebTextView)) { 5028 imm.restartInput(mWebTextView); 5029 mWebTextView.clearComposingText(); 5030 } 5031 if (isFocused()) { 5032 mWebTextView.requestFocus(); 5033 } 5034 } 5035 5036 private void updateWebTextViewPosition() { 5037 Rect visibleRect = new Rect(); 5038 calcOurContentVisibleRect(visibleRect); 5039 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 5040 // should be in content coordinates. 5041 Rect bounds = nativeFocusCandidateNodeBounds(); 5042 Rect vBox = contentToViewRect(bounds); 5043 offsetByLayerScrollPosition(vBox); 5044 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 5045 if (!Rect.intersects(bounds, visibleRect)) { 5046 revealSelection(); 5047 } 5048 updateWebTextViewPadding(); 5049 } 5050 5051 /** 5052 * Update the padding of mWebTextView based on the native textfield/textarea 5053 */ 5054 void updateWebTextViewPadding() { 5055 Rect paddingRect = nativeFocusCandidatePaddingRect(); 5056 if (paddingRect != null) { 5057 // Use contentToViewDimension since these are the dimensions of 5058 // the padding. 5059 mWebTextView.setPadding( 5060 contentToViewDimension(paddingRect.left), 5061 contentToViewDimension(paddingRect.top), 5062 contentToViewDimension(paddingRect.right), 5063 contentToViewDimension(paddingRect.bottom)); 5064 } 5065 } 5066 5067 /** 5068 * Tell webkit to put the cursor on screen. 5069 */ 5070 /* package */ void revealSelection() { 5071 if (mWebViewCore != null) { 5072 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 5073 } 5074 } 5075 5076 /** 5077 * Called by WebTextView to find saved form data associated with the 5078 * textfield 5079 * @param name Name of the textfield. 5080 * @param nodePointer Pointer to the node of the textfield, so it can be 5081 * compared to the currently focused textfield when the data is 5082 * retrieved. 5083 * @param autoFillable true if WebKit has determined this field is part of 5084 * a form that can be auto filled. 5085 * @param autoComplete true if the attribute "autocomplete" is set to true 5086 * on the textfield. 5087 */ 5088 /* package */ void requestFormData(String name, int nodePointer, 5089 boolean autoFillable, boolean autoComplete) { 5090 if (mWebViewCore.getSettings().getSaveFormData()) { 5091 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 5092 update.arg1 = nodePointer; 5093 RequestFormData updater = new RequestFormData(name, getUrl(), 5094 update, autoFillable, autoComplete); 5095 Thread t = new Thread(updater); 5096 t.start(); 5097 } 5098 } 5099 5100 /** 5101 * Pass a message to find out the <label> associated with the <input> 5102 * identified by nodePointer 5103 * @param framePointer Pointer to the frame containing the <input> node 5104 * @param nodePointer Pointer to the node for which a <label> is desired. 5105 */ 5106 /* package */ void requestLabel(int framePointer, int nodePointer) { 5107 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 5108 nodePointer); 5109 } 5110 5111 /* 5112 * This class requests an Adapter for the WebTextView which shows past 5113 * entries stored in the database. It is a Runnable so that it can be done 5114 * in its own thread, without slowing down the UI. 5115 */ 5116 private class RequestFormData implements Runnable { 5117 private String mName; 5118 private String mUrl; 5119 private Message mUpdateMessage; 5120 private boolean mAutoFillable; 5121 private boolean mAutoComplete; 5122 private WebSettings mWebSettings; 5123 5124 public RequestFormData(String name, String url, Message msg, 5125 boolean autoFillable, boolean autoComplete) { 5126 mName = name; 5127 mUrl = WebTextView.urlForAutoCompleteData(url); 5128 mUpdateMessage = msg; 5129 mAutoFillable = autoFillable; 5130 mAutoComplete = autoComplete; 5131 mWebSettings = getSettings(); 5132 } 5133 5134 @Override 5135 public void run() { 5136 ArrayList<String> pastEntries = new ArrayList<String>(); 5137 5138 if (mAutoFillable) { 5139 // Note that code inside the adapter click handler in WebTextView depends 5140 // on the AutoFill item being at the top of the drop down list. If you change 5141 // the order, make sure to do it there too! 5142 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5143 pastEntries.add(getResources().getText( 5144 com.android.internal.R.string.autofill_this_form).toString() + 5145 " " + 5146 mAutoFillData.getPreviewString()); 5147 mWebTextView.setAutoFillProfileIsSet(true); 5148 } else { 5149 // There is no autofill profile set up yet, so add an option that 5150 // will invite the user to set their profile up. 5151 pastEntries.add(getResources().getText( 5152 com.android.internal.R.string.setup_autofill).toString()); 5153 mWebTextView.setAutoFillProfileIsSet(false); 5154 } 5155 } 5156 5157 if (mAutoComplete) { 5158 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5159 } 5160 5161 if (pastEntries.size() > 0) { 5162 AutoCompleteAdapter adapter = new 5163 AutoCompleteAdapter(mContext, pastEntries); 5164 mUpdateMessage.obj = adapter; 5165 mUpdateMessage.sendToTarget(); 5166 } 5167 } 5168 } 5169 5170 /** 5171 * Dump the display tree to "/sdcard/displayTree.txt" 5172 * 5173 * @hide debug only 5174 */ 5175 public void dumpDisplayTree() { 5176 nativeDumpDisplayTree(getUrl()); 5177 } 5178 5179 /** 5180 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5181 * "/sdcard/domTree.txt" 5182 * 5183 * @hide debug only 5184 */ 5185 public void dumpDomTree(boolean toFile) { 5186 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5187 } 5188 5189 /** 5190 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5191 * to "/sdcard/renderTree.txt" 5192 * 5193 * @hide debug only 5194 */ 5195 public void dumpRenderTree(boolean toFile) { 5196 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5197 } 5198 5199 /** 5200 * Called by DRT on UI thread, need to proxy to WebCore thread. 5201 * 5202 * @hide debug only 5203 */ 5204 public void useMockDeviceOrientation() { 5205 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5206 } 5207 5208 /** 5209 * Called by DRT on WebCore thread. 5210 * 5211 * @hide debug only 5212 */ 5213 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5214 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5215 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5216 canProvideGamma, gamma); 5217 } 5218 5219 // This is used to determine long press with the center key. Does not 5220 // affect long press with the trackball/touch. 5221 private boolean mGotCenterDown = false; 5222 5223 @Override 5224 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5225 if (mBlockWebkitViewMessages) { 5226 return false; 5227 } 5228 // send complex characters to webkit for use by JS and plugins 5229 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5230 // pass the key to DOM 5231 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5232 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5233 // return true as DOM handles the key 5234 return true; 5235 } 5236 return false; 5237 } 5238 5239 private boolean isEnterActionKey(int keyCode) { 5240 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5241 || keyCode == KeyEvent.KEYCODE_ENTER 5242 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5243 } 5244 5245 @Override 5246 public boolean onKeyDown(int keyCode, KeyEvent event) { 5247 if (DebugFlags.WEB_VIEW) { 5248 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5249 + "keyCode=" + keyCode 5250 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5251 } 5252 if (mBlockWebkitViewMessages) { 5253 return false; 5254 } 5255 5256 // don't implement accelerator keys here; defer to host application 5257 if (event.isCtrlPressed()) { 5258 return false; 5259 } 5260 5261 if (mNativeClass == 0) { 5262 return false; 5263 } 5264 5265 // do this hack up front, so it always works, regardless of touch-mode 5266 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5267 mAutoRedraw = !mAutoRedraw; 5268 if (mAutoRedraw) { 5269 invalidate(); 5270 } 5271 return true; 5272 } 5273 5274 // Bubble up the key event if 5275 // 1. it is a system key; or 5276 // 2. the host application wants to handle it; 5277 if (event.isSystem() 5278 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5279 return false; 5280 } 5281 5282 // accessibility support 5283 if (accessibilityScriptInjected()) { 5284 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5285 // if an accessibility script is injected we delegate to it the key handling. 5286 // this script is a screen reader which is a fully fledged solution for blind 5287 // users to navigate in and interact with web pages. 5288 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5289 return true; 5290 } else { 5291 // Clean up if accessibility was disabled after loading the current URL. 5292 mAccessibilityScriptInjected = false; 5293 } 5294 } else if (mAccessibilityInjector != null) { 5295 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5296 if (mAccessibilityInjector.onKeyEvent(event)) { 5297 // if an accessibility injector is present (no JavaScript enabled or the site 5298 // opts out injecting our JavaScript screen reader) we let it decide whether 5299 // to act on and consume the event. 5300 return true; 5301 } 5302 } else { 5303 // Clean up if accessibility was disabled after loading the current URL. 5304 mAccessibilityInjector = null; 5305 } 5306 } 5307 5308 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5309 if (event.hasNoModifiers()) { 5310 pageUp(false); 5311 return true; 5312 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5313 pageUp(true); 5314 return true; 5315 } 5316 } 5317 5318 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5319 if (event.hasNoModifiers()) { 5320 pageDown(false); 5321 return true; 5322 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5323 pageDown(true); 5324 return true; 5325 } 5326 } 5327 5328 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5329 pageUp(true); 5330 return true; 5331 } 5332 5333 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5334 pageDown(true); 5335 return true; 5336 } 5337 5338 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5339 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5340 switchOutDrawHistory(); 5341 if (nativePageShouldHandleShiftAndArrows()) { 5342 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5343 return true; 5344 } 5345 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5346 switch (keyCode) { 5347 case KeyEvent.KEYCODE_DPAD_UP: 5348 pageUp(true); 5349 return true; 5350 case KeyEvent.KEYCODE_DPAD_DOWN: 5351 pageDown(true); 5352 return true; 5353 case KeyEvent.KEYCODE_DPAD_LEFT: 5354 nativeClearCursor(); // start next trackball movement from page edge 5355 return pinScrollTo(0, mScrollY, true, 0); 5356 case KeyEvent.KEYCODE_DPAD_RIGHT: 5357 nativeClearCursor(); // start next trackball movement from page edge 5358 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5359 } 5360 } 5361 if (mSelectingText) { 5362 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5363 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5364 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5365 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5366 int multiplier = event.getRepeatCount() + 1; 5367 moveSelection(xRate * multiplier, yRate * multiplier); 5368 return true; 5369 } 5370 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5371 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5372 return true; 5373 } 5374 // Bubble up the key event as WebView doesn't handle it 5375 return false; 5376 } 5377 5378 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5379 switchOutDrawHistory(); 5380 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5381 || nativeCursorWantsKeyEvents(); 5382 if (event.getRepeatCount() == 0) { 5383 if (mSelectingText) { 5384 return true; // discard press if copy in progress 5385 } 5386 mGotCenterDown = true; 5387 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5388 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5389 if (!wantsKeyEvents) return true; 5390 } 5391 // Bubble up the key event as WebView doesn't handle it 5392 if (!wantsKeyEvents) return false; 5393 } 5394 5395 if (getSettings().getNavDump()) { 5396 switch (keyCode) { 5397 case KeyEvent.KEYCODE_4: 5398 dumpDisplayTree(); 5399 break; 5400 case KeyEvent.KEYCODE_5: 5401 case KeyEvent.KEYCODE_6: 5402 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5403 break; 5404 case KeyEvent.KEYCODE_7: 5405 case KeyEvent.KEYCODE_8: 5406 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5407 break; 5408 } 5409 } 5410 5411 if (nativeCursorIsTextInput()) { 5412 // This message will put the node in focus, for the DOM's notion 5413 // of focus. 5414 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5415 nativeCursorNodePointer()); 5416 // This will bring up the WebTextView and put it in focus, for 5417 // our view system's notion of focus 5418 rebuildWebTextView(); 5419 // Now we need to pass the event to it 5420 if (inEditingMode()) { 5421 mWebTextView.setDefaultSelection(); 5422 return mWebTextView.dispatchKeyEvent(event); 5423 } 5424 } else if (nativeHasFocusNode()) { 5425 // In this case, the cursor is not on a text input, but the focus 5426 // might be. Check it, and if so, hand over to the WebTextView. 5427 rebuildWebTextView(); 5428 if (inEditingMode()) { 5429 mWebTextView.setDefaultSelection(); 5430 return mWebTextView.dispatchKeyEvent(event); 5431 } 5432 } 5433 5434 // TODO: should we pass all the keys to DOM or check the meta tag 5435 if (nativeCursorWantsKeyEvents() || true) { 5436 // pass the key to DOM 5437 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5438 // return true as DOM handles the key 5439 return true; 5440 } 5441 5442 // Bubble up the key event as WebView doesn't handle it 5443 return false; 5444 } 5445 5446 @Override 5447 public boolean onKeyUp(int keyCode, KeyEvent event) { 5448 if (DebugFlags.WEB_VIEW) { 5449 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5450 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5451 } 5452 if (mBlockWebkitViewMessages) { 5453 return false; 5454 } 5455 5456 if (mNativeClass == 0) { 5457 return false; 5458 } 5459 5460 // special CALL handling when cursor node's href is "tel:XXX" 5461 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5462 String text = nativeCursorText(); 5463 if (!nativeCursorIsTextInput() && text != null 5464 && text.startsWith(SCHEME_TEL)) { 5465 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5466 getContext().startActivity(intent); 5467 return true; 5468 } 5469 } 5470 5471 // Bubble up the key event if 5472 // 1. it is a system key; or 5473 // 2. the host application wants to handle it; 5474 if (event.isSystem() 5475 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5476 return false; 5477 } 5478 5479 // accessibility support 5480 if (accessibilityScriptInjected()) { 5481 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5482 // if an accessibility script is injected we delegate to it the key handling. 5483 // this script is a screen reader which is a fully fledged solution for blind 5484 // users to navigate in and interact with web pages. 5485 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5486 return true; 5487 } else { 5488 // Clean up if accessibility was disabled after loading the current URL. 5489 mAccessibilityScriptInjected = false; 5490 } 5491 } else if (mAccessibilityInjector != null) { 5492 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5493 if (mAccessibilityInjector.onKeyEvent(event)) { 5494 // if an accessibility injector is present (no JavaScript enabled or the site 5495 // opts out injecting our JavaScript screen reader) we let it decide whether to 5496 // act on and consume the event. 5497 return true; 5498 } 5499 } else { 5500 // Clean up if accessibility was disabled after loading the current URL. 5501 mAccessibilityInjector = null; 5502 } 5503 } 5504 5505 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5506 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5507 if (nativePageShouldHandleShiftAndArrows()) { 5508 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5509 return true; 5510 } 5511 // always handle the navigation keys in the UI thread 5512 // Bubble up the key event as WebView doesn't handle it 5513 return false; 5514 } 5515 5516 if (isEnterActionKey(keyCode)) { 5517 // remove the long press message first 5518 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5519 mGotCenterDown = false; 5520 5521 if (mSelectingText) { 5522 if (mExtendSelection) { 5523 copySelection(); 5524 selectionDone(); 5525 } else { 5526 mExtendSelection = true; 5527 nativeSetExtendSelection(); 5528 invalidate(); // draw the i-beam instead of the arrow 5529 } 5530 return true; // discard press if copy in progress 5531 } 5532 5533 // perform the single click 5534 Rect visibleRect = sendOurVisibleRect(); 5535 // Note that sendOurVisibleRect calls viewToContent, so the 5536 // coordinates should be in content coordinates. 5537 if (!nativeCursorIntersects(visibleRect)) { 5538 return false; 5539 } 5540 WebViewCore.CursorData data = cursorData(); 5541 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5542 playSoundEffect(SoundEffectConstants.CLICK); 5543 if (nativeCursorIsTextInput()) { 5544 rebuildWebTextView(); 5545 centerKeyPressOnTextField(); 5546 if (inEditingMode()) { 5547 mWebTextView.setDefaultSelection(); 5548 } 5549 return true; 5550 } 5551 clearTextEntry(); 5552 nativeShowCursorTimed(); 5553 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5554 return true; 5555 } 5556 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5557 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5558 nativeCursorNodePointer()); 5559 return true; 5560 } 5561 } 5562 5563 // TODO: should we pass all the keys to DOM or check the meta tag 5564 if (nativeCursorWantsKeyEvents() || true) { 5565 // pass the key to DOM 5566 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5567 // return true as DOM handles the key 5568 return true; 5569 } 5570 5571 // Bubble up the key event as WebView doesn't handle it 5572 return false; 5573 } 5574 5575 /* 5576 * Enter selecting text mode, and see if CAB should be shown. 5577 * Returns true if the WebView is now in 5578 * selecting text mode (including if it was already in that mode, and this 5579 * method did nothing). 5580 */ 5581 private boolean setUpSelect(boolean selectWord, int x, int y) { 5582 if (0 == mNativeClass) return false; // client isn't initialized 5583 if (inFullScreenMode()) return false; 5584 if (mSelectingText) return true; 5585 nativeResetSelection(); 5586 if (selectWord && !nativeWordSelection(x, y)) { 5587 selectionDone(); 5588 return false; 5589 } 5590 mSelectCallback = new SelectActionModeCallback(); 5591 mSelectCallback.setWebView(this); 5592 if (startActionMode(mSelectCallback) == null) { 5593 // There is no ActionMode, so do not allow the user to modify a 5594 // selection. 5595 selectionDone(); 5596 return false; 5597 } 5598 mExtendSelection = false; 5599 mSelectingText = mDrawSelectionPointer = true; 5600 if (DEBUG_TEXT_HANDLES) { 5601 // Debugging text handles requires running in software mode 5602 setLayerType(LAYER_TYPE_SOFTWARE, null); 5603 } 5604 // don't let the picture change during text selection 5605 WebViewCore.pauseUpdatePicture(mWebViewCore); 5606 if (nativeHasCursorNode()) { 5607 Rect rect = nativeCursorNodeBounds(); 5608 mSelectX = contentToViewX(rect.left); 5609 mSelectY = contentToViewY(rect.top); 5610 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5611 mSelectX = mScrollX + mLastTouchX; 5612 mSelectY = mScrollY + mLastTouchY; 5613 } else { 5614 mSelectX = mScrollX + getViewWidth() / 2; 5615 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5616 } 5617 nativeHideCursor(); 5618 mMinAutoScrollX = 0; 5619 mMaxAutoScrollX = getViewWidth(); 5620 mMinAutoScrollY = 0; 5621 mMaxAutoScrollY = getViewHeightWithTitle(); 5622 mCurrentScrollingLayerId = nativeScrollableLayer(viewToContentX(mSelectX), 5623 viewToContentY(mSelectY), mScrollingLayerRect, 5624 mScrollingLayerBounds); 5625 if (mCurrentScrollingLayerId != 0) { 5626 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5627 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5628 contentToViewX(mScrollingLayerBounds.left)); 5629 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5630 contentToViewX(mScrollingLayerBounds.right)); 5631 } 5632 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5633 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5634 contentToViewY(mScrollingLayerBounds.top)); 5635 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5636 contentToViewY(mScrollingLayerBounds.bottom)); 5637 } 5638 } 5639 mMinAutoScrollX += SELECT_SCROLL; 5640 mMaxAutoScrollX -= SELECT_SCROLL; 5641 mMinAutoScrollY += SELECT_SCROLL; 5642 mMaxAutoScrollY -= SELECT_SCROLL; 5643 return true; 5644 } 5645 5646 /** 5647 * Use this method to put the WebView into text selection mode. 5648 * Do not rely on this functionality; it will be deprecated in the future. 5649 * @deprecated This method is now obsolete. 5650 */ 5651 @Deprecated 5652 public void emulateShiftHeld() { 5653 checkThread(); 5654 setUpSelect(false, 0, 0); 5655 } 5656 5657 /** 5658 * Select all of the text in this WebView. 5659 * 5660 * @hide This is an implementation detail. 5661 */ 5662 public void selectAll() { 5663 if (0 == mNativeClass) return; // client isn't initialized 5664 if (inFullScreenMode()) return; 5665 if (!mSelectingText) { 5666 // retrieve a point somewhere within the text 5667 Point select = nativeSelectableText(); 5668 if (!selectText(select.x, select.y)) return; 5669 } 5670 nativeSelectAll(); 5671 mDrawSelectionPointer = false; 5672 mExtendSelection = true; 5673 invalidate(); 5674 } 5675 5676 /** 5677 * Called when the selection has been removed. 5678 */ 5679 void selectionDone() { 5680 if (mSelectingText) { 5681 mSelectingText = false; 5682 if (DEBUG_TEXT_HANDLES) { 5683 // Debugging text handles required running in software mode, set 5684 // back to default now 5685 setLayerType(LAYER_TYPE_NONE, null); 5686 } 5687 // finish is idempotent, so this is fine even if selectionDone was 5688 // called by mSelectCallback.onDestroyActionMode 5689 mSelectCallback.finish(); 5690 mSelectCallback = null; 5691 WebViewCore.resumePriority(); 5692 WebViewCore.resumeUpdatePicture(mWebViewCore); 5693 invalidate(); // redraw without selection 5694 mAutoScrollX = 0; 5695 mAutoScrollY = 0; 5696 mSentAutoScrollMessage = false; 5697 } 5698 } 5699 5700 /** 5701 * Copy the selection to the clipboard 5702 * 5703 * @hide This is an implementation detail. 5704 */ 5705 public boolean copySelection() { 5706 boolean copiedSomething = false; 5707 String selection = getSelection(); 5708 if (selection != null && selection != "") { 5709 if (DebugFlags.WEB_VIEW) { 5710 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5711 } 5712 Toast.makeText(mContext 5713 , com.android.internal.R.string.text_copied 5714 , Toast.LENGTH_SHORT).show(); 5715 copiedSomething = true; 5716 ClipboardManager cm = (ClipboardManager)getContext() 5717 .getSystemService(Context.CLIPBOARD_SERVICE); 5718 cm.setText(selection); 5719 } 5720 invalidate(); // remove selection region and pointer 5721 return copiedSomething; 5722 } 5723 5724 /** 5725 * @hide This is an implementation detail. 5726 */ 5727 public SearchBox getSearchBox() { 5728 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5729 return null; 5730 } 5731 return mWebViewCore.getBrowserFrame().getSearchBox(); 5732 } 5733 5734 /** 5735 * Returns the currently highlighted text as a string. 5736 */ 5737 String getSelection() { 5738 if (mNativeClass == 0) return ""; 5739 return nativeGetSelection(); 5740 } 5741 5742 @Override 5743 protected void onAttachedToWindow() { 5744 super.onAttachedToWindow(); 5745 if (hasWindowFocus()) setActive(true); 5746 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5747 if (mGlobalLayoutListener == null) { 5748 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5749 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5750 } 5751 if (mScrollChangedListener == null) { 5752 mScrollChangedListener = new InnerScrollChangedListener(); 5753 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5754 } 5755 5756 addAccessibilityApisToJavaScript(); 5757 5758 mTouchEventQueue.reset(); 5759 } 5760 5761 @Override 5762 protected void onDetachedFromWindow() { 5763 clearHelpers(); 5764 mZoomManager.dismissZoomPicker(); 5765 if (hasWindowFocus()) setActive(false); 5766 5767 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5768 if (mGlobalLayoutListener != null) { 5769 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5770 mGlobalLayoutListener = null; 5771 } 5772 if (mScrollChangedListener != null) { 5773 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5774 mScrollChangedListener = null; 5775 } 5776 5777 removeAccessibilityApisFromJavaScript(); 5778 5779 super.onDetachedFromWindow(); 5780 } 5781 5782 @Override 5783 protected void onVisibilityChanged(View changedView, int visibility) { 5784 super.onVisibilityChanged(changedView, visibility); 5785 // The zoomManager may be null if the webview is created from XML that 5786 // specifies the view's visibility param as not visible (see http://b/2794841) 5787 if (visibility != View.VISIBLE && mZoomManager != null) { 5788 mZoomManager.dismissZoomPicker(); 5789 } 5790 updateDrawingState(); 5791 } 5792 5793 /** 5794 * @deprecated WebView no longer needs to implement 5795 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5796 */ 5797 @Override 5798 // Cannot add @hide as this can always be accessed via the interface. 5799 @Deprecated 5800 public void onChildViewAdded(View parent, View child) {} 5801 5802 /** 5803 * @deprecated WebView no longer needs to implement 5804 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5805 */ 5806 @Override 5807 // Cannot add @hide as this can always be accessed via the interface. 5808 @Deprecated 5809 public void onChildViewRemoved(View p, View child) {} 5810 5811 /** 5812 * @deprecated WebView should not have implemented 5813 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5814 */ 5815 @Override 5816 // Cannot add @hide as this can always be accessed via the interface. 5817 @Deprecated 5818 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5819 } 5820 5821 void setActive(boolean active) { 5822 if (active) { 5823 if (hasFocus()) { 5824 // If our window regained focus, and we have focus, then begin 5825 // drawing the cursor ring 5826 mDrawCursorRing = !inEditingMode(); 5827 setFocusControllerActive(true); 5828 } else { 5829 mDrawCursorRing = false; 5830 if (!inEditingMode()) { 5831 // If our window gained focus, but we do not have it, do not 5832 // draw the cursor ring. 5833 setFocusControllerActive(false); 5834 } 5835 // We do not call recordButtons here because we assume 5836 // that when we lost focus, or window focus, it got called with 5837 // false for the first parameter 5838 } 5839 } else { 5840 if (!mZoomManager.isZoomPickerVisible()) { 5841 /* 5842 * The external zoom controls come in their own window, so our 5843 * window loses focus. Our policy is to not draw the cursor ring 5844 * if our window is not focused, but this is an exception since 5845 * the user can still navigate the web page with the zoom 5846 * controls showing. 5847 */ 5848 mDrawCursorRing = false; 5849 } 5850 mKeysPressed.clear(); 5851 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5852 mTouchMode = TOUCH_DONE_MODE; 5853 setFocusControllerActive(false); 5854 } 5855 invalidate(); 5856 } 5857 5858 // To avoid drawing the cursor ring, and remove the TextView when our window 5859 // loses focus. 5860 @Override 5861 public void onWindowFocusChanged(boolean hasWindowFocus) { 5862 setActive(hasWindowFocus); 5863 if (hasWindowFocus) { 5864 JWebCoreJavaBridge.setActiveWebView(this); 5865 if (mPictureUpdatePausedForFocusChange) { 5866 WebViewCore.resumeUpdatePicture(mWebViewCore); 5867 mPictureUpdatePausedForFocusChange = false; 5868 } 5869 } else { 5870 JWebCoreJavaBridge.removeActiveWebView(this); 5871 final WebSettings settings = getSettings(); 5872 if (settings != null && settings.enableSmoothTransition() && 5873 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5874 WebViewCore.pauseUpdatePicture(mWebViewCore); 5875 mPictureUpdatePausedForFocusChange = true; 5876 } 5877 } 5878 super.onWindowFocusChanged(hasWindowFocus); 5879 } 5880 5881 /* 5882 * Pass a message to WebCore Thread, telling the WebCore::Page's 5883 * FocusController to be "inactive" so that it will 5884 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5885 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5886 */ 5887 /* package */ void setFocusControllerActive(boolean active) { 5888 if (mWebViewCore == null) return; 5889 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5890 // Need to send this message after the document regains focus. 5891 if (active && mListBoxMessage != null) { 5892 mWebViewCore.sendMessage(mListBoxMessage); 5893 mListBoxMessage = null; 5894 } 5895 } 5896 5897 @Override 5898 protected void onFocusChanged(boolean focused, int direction, 5899 Rect previouslyFocusedRect) { 5900 if (DebugFlags.WEB_VIEW) { 5901 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5902 } 5903 if (focused) { 5904 // When we regain focus, if we have window focus, resume drawing 5905 // the cursor ring 5906 if (hasWindowFocus()) { 5907 mDrawCursorRing = !inEditingMode(); 5908 setFocusControllerActive(true); 5909 //} else { 5910 // The WebView has gained focus while we do not have 5911 // windowfocus. When our window lost focus, we should have 5912 // called recordButtons(false...) 5913 } 5914 } else { 5915 // When we lost focus, unless focus went to the TextView (which is 5916 // true if we are in editing mode), stop drawing the cursor ring. 5917 mDrawCursorRing = false; 5918 if (!inEditingMode()) { 5919 setFocusControllerActive(false); 5920 } 5921 mKeysPressed.clear(); 5922 } 5923 5924 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5925 } 5926 5927 void setGLRectViewport() { 5928 // Use the getGlobalVisibleRect() to get the intersection among the parents 5929 // visible == false means we're clipped - send a null rect down to indicate that 5930 // we should not draw 5931 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5932 if (visible) { 5933 // Then need to invert the Y axis, just for GL 5934 View rootView = getRootView(); 5935 int rootViewHeight = rootView.getHeight(); 5936 mViewRectViewport.set(mGLRectViewport); 5937 int savedWebViewBottom = mGLRectViewport.bottom; 5938 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5939 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5940 mGLViewportEmpty = false; 5941 } else { 5942 mGLViewportEmpty = true; 5943 } 5944 calcOurContentVisibleRectF(mVisibleContentRect); 5945 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5946 mGLViewportEmpty ? null : mViewRectViewport, 5947 mVisibleContentRect); 5948 } 5949 5950 /** 5951 * @hide 5952 */ 5953 @Override 5954 protected boolean setFrame(int left, int top, int right, int bottom) { 5955 boolean changed = super.setFrame(left, top, right, bottom); 5956 if (!changed && mHeightCanMeasure) { 5957 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5958 // in WebViewCore after we get the first layout. We do call 5959 // requestLayout() when we get contentSizeChanged(). But the View 5960 // system won't call onSizeChanged if the dimension is not changed. 5961 // In this case, we need to call sendViewSizeZoom() explicitly to 5962 // notify the WebKit about the new dimensions. 5963 sendViewSizeZoom(false); 5964 } 5965 setGLRectViewport(); 5966 return changed; 5967 } 5968 5969 @Override 5970 protected void onSizeChanged(int w, int h, int ow, int oh) { 5971 super.onSizeChanged(w, h, ow, oh); 5972 5973 // adjust the max viewport width depending on the view dimensions. This 5974 // is to ensure the scaling is not going insane. So do not shrink it if 5975 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5976 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5977 if (newMaxViewportWidth > sMaxViewportWidth) { 5978 sMaxViewportWidth = newMaxViewportWidth; 5979 } 5980 5981 mZoomManager.onSizeChanged(w, h, ow, oh); 5982 5983 if (mLoadedPicture != null && mDelaySetPicture == null) { 5984 // Size changes normally result in a new picture 5985 // Re-set the loaded picture to simulate that 5986 // However, do not update the base layer as that hasn't changed 5987 setNewPicture(mLoadedPicture, false); 5988 } 5989 } 5990 5991 @Override 5992 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5993 super.onScrollChanged(l, t, oldl, oldt); 5994 if (!mInOverScrollMode) { 5995 sendOurVisibleRect(); 5996 // update WebKit if visible title bar height changed. The logic is same 5997 // as getVisibleTitleHeightImpl. 5998 int titleHeight = getTitleHeight(); 5999 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 6000 sendViewSizeZoom(false); 6001 } 6002 } 6003 } 6004 6005 @Override 6006 public boolean dispatchKeyEvent(KeyEvent event) { 6007 switch (event.getAction()) { 6008 case KeyEvent.ACTION_DOWN: 6009 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 6010 break; 6011 case KeyEvent.ACTION_MULTIPLE: 6012 // Always accept the action. 6013 break; 6014 case KeyEvent.ACTION_UP: 6015 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 6016 if (location == -1) { 6017 // We did not receive the key down for this key, so do not 6018 // handle the key up. 6019 return false; 6020 } else { 6021 // We did receive the key down. Handle the key up, and 6022 // remove it from our pressed keys. 6023 mKeysPressed.remove(location); 6024 } 6025 break; 6026 default: 6027 // Accept the action. This should not happen, unless a new 6028 // action is added to KeyEvent. 6029 break; 6030 } 6031 if (inEditingMode() && mWebTextView.isFocused()) { 6032 // Ensure that the WebTextView gets the event, even if it does 6033 // not currently have a bounds. 6034 return mWebTextView.dispatchKeyEvent(event); 6035 } else { 6036 return super.dispatchKeyEvent(event); 6037 } 6038 } 6039 6040 /* 6041 * Here is the snap align logic: 6042 * 1. If it starts nearly horizontally or vertically, snap align; 6043 * 2. If there is a dramitic direction change, let it go; 6044 * 6045 * Adjustable parameters. Angle is the radians on a unit circle, limited 6046 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 6047 */ 6048 private static final float HSLOPE_TO_START_SNAP = .25f; 6049 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 6050 private static final float VSLOPE_TO_START_SNAP = 1.25f; 6051 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 6052 /* 6053 * These values are used to influence the average angle when entering 6054 * snap mode. If is is the first movement entering snap, we set the average 6055 * to the appropriate ideal. If the user is entering into snap after the 6056 * first movement, then we average the average angle with these values. 6057 */ 6058 private static final float ANGLE_VERT = 2f; 6059 private static final float ANGLE_HORIZ = 0f; 6060 /* 6061 * The modified moving average weight. 6062 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 6063 */ 6064 private static final float MMA_WEIGHT_N = 5; 6065 6066 private boolean hitFocusedPlugin(int contentX, int contentY) { 6067 if (DebugFlags.WEB_VIEW) { 6068 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 6069 Rect r = nativeFocusNodeBounds(); 6070 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 6071 + ", " + r.right + ", " + r.bottom + ")"); 6072 } 6073 return nativeFocusIsPlugin() 6074 && nativeFocusNodeBounds().contains(contentX, contentY); 6075 } 6076 6077 private boolean shouldForwardTouchEvent() { 6078 if (mFullScreenHolder != null) return true; 6079 if (mBlockWebkitViewMessages) return false; 6080 return mForwardTouchEvents 6081 && !mSelectingText 6082 && mPreventDefault != PREVENT_DEFAULT_IGNORE 6083 && mPreventDefault != PREVENT_DEFAULT_NO; 6084 } 6085 6086 private boolean inFullScreenMode() { 6087 return mFullScreenHolder != null; 6088 } 6089 6090 private void dismissFullScreenMode() { 6091 if (inFullScreenMode()) { 6092 mFullScreenHolder.hide(); 6093 mFullScreenHolder = null; 6094 invalidate(); 6095 } 6096 } 6097 6098 void onPinchToZoomAnimationStart() { 6099 // cancel the single touch handling 6100 cancelTouch(); 6101 onZoomAnimationStart(); 6102 } 6103 6104 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 6105 onZoomAnimationEnd(); 6106 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 6107 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 6108 // as it may trigger the unwanted fling. 6109 mTouchMode = TOUCH_PINCH_DRAG; 6110 mConfirmMove = true; 6111 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 6112 } 6113 6114 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 6115 // layer is found. 6116 private void startScrollingLayer(float x, float y) { 6117 int contentX = viewToContentX((int) x + mScrollX); 6118 int contentY = viewToContentY((int) y + mScrollY); 6119 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 6120 mScrollingLayerRect, mScrollingLayerBounds); 6121 if (mCurrentScrollingLayerId != 0) { 6122 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6123 } 6124 } 6125 6126 // 1/(density * density) used to compute the distance between points. 6127 // Computed in init(). 6128 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 6129 6130 // The distance between two points reported in onTouchEvent scaled by the 6131 // density of the screen. 6132 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 6133 6134 @Override 6135 public boolean onHoverEvent(MotionEvent event) { 6136 if (mNativeClass == 0) { 6137 return false; 6138 } 6139 WebViewCore.CursorData data = cursorDataNoPosition(); 6140 data.mX = viewToContentX((int) event.getX() + mScrollX); 6141 data.mY = viewToContentY((int) event.getY() + mScrollY); 6142 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6143 return true; 6144 } 6145 6146 @Override 6147 public boolean onTouchEvent(MotionEvent ev) { 6148 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6149 return false; 6150 } 6151 6152 if (DebugFlags.WEB_VIEW) { 6153 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6154 + " mTouchMode=" + mTouchMode 6155 + " numPointers=" + ev.getPointerCount()); 6156 } 6157 6158 // If WebKit wasn't interested in this multitouch gesture, enqueue 6159 // the event for handling directly rather than making the round trip 6160 // to WebKit and back. 6161 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6162 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6163 } else { 6164 mTouchEventQueue.enqueueTouchEvent(ev); 6165 } 6166 6167 // Since all events are handled asynchronously, we always want the gesture stream. 6168 return true; 6169 } 6170 6171 private float calculateDragAngle(int dx, int dy) { 6172 dx = Math.abs(dx); 6173 dy = Math.abs(dy); 6174 return (float) Math.atan2(dy, dx); 6175 } 6176 6177 /* 6178 * Common code for single touch and multi-touch. 6179 * (x, y) denotes current focus point, which is the touch point for single touch 6180 * and the middle point for multi-touch. 6181 */ 6182 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6183 long eventTime = ev.getEventTime(); 6184 6185 // Due to the touch screen edge effect, a touch closer to the edge 6186 // always snapped to the edge. As getViewWidth() can be different from 6187 // getWidth() due to the scrollbar, adjusting the point to match 6188 // getViewWidth(). Same applied to the height. 6189 x = Math.min(x, getViewWidth() - 1); 6190 y = Math.min(y, getViewHeightWithTitle() - 1); 6191 6192 int deltaX = mLastTouchX - x; 6193 int deltaY = mLastTouchY - y; 6194 int contentX = viewToContentX(x + mScrollX); 6195 int contentY = viewToContentY(y + mScrollY); 6196 6197 switch (action) { 6198 case MotionEvent.ACTION_DOWN: { 6199 mPreventDefault = PREVENT_DEFAULT_NO; 6200 mConfirmMove = false; 6201 mInitialHitTestResult = null; 6202 if (!mScroller.isFinished()) { 6203 // stop the current scroll animation, but if this is 6204 // the start of a fling, allow it to add to the current 6205 // fling's velocity 6206 mScroller.abortAnimation(); 6207 mTouchMode = TOUCH_DRAG_START_MODE; 6208 mConfirmMove = true; 6209 nativeSetIsScrolling(false); 6210 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6211 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6212 if (sDisableNavcache) { 6213 removeTouchHighlight(); 6214 } 6215 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6216 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6217 } else { 6218 // commit the short press action for the previous tap 6219 doShortPress(); 6220 mTouchMode = TOUCH_INIT_MODE; 6221 mDeferTouchProcess = !mBlockWebkitViewMessages 6222 && (!inFullScreenMode() && mForwardTouchEvents) 6223 ? hitFocusedPlugin(contentX, contentY) 6224 : false; 6225 } 6226 } else { // the normal case 6227 mTouchMode = TOUCH_INIT_MODE; 6228 mDeferTouchProcess = !mBlockWebkitViewMessages 6229 && (!inFullScreenMode() && mForwardTouchEvents) 6230 ? hitFocusedPlugin(contentX, contentY) 6231 : false; 6232 if (!mBlockWebkitViewMessages) { 6233 mWebViewCore.sendMessage( 6234 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6235 } 6236 if (sDisableNavcache) { 6237 TouchHighlightData data = new TouchHighlightData(); 6238 data.mX = contentX; 6239 data.mY = contentY; 6240 data.mNativeLayerRect = new Rect(); 6241 data.mNativeLayer = nativeScrollableLayer( 6242 contentX, contentY, data.mNativeLayerRect, null); 6243 data.mSlop = viewToContentDimension(mNavSlop); 6244 mTouchHighlightRegion.setEmpty(); 6245 if (!mBlockWebkitViewMessages) { 6246 mTouchHighlightRequested = System.currentTimeMillis(); 6247 mWebViewCore.sendMessageAtFrontOfQueue( 6248 EventHub.HIT_TEST, data); 6249 } 6250 if (DEBUG_TOUCH_HIGHLIGHT) { 6251 if (getSettings().getNavDump()) { 6252 mTouchHighlightX = x + mScrollX; 6253 mTouchHighlightY = y + mScrollY; 6254 mPrivateHandler.postDelayed(new Runnable() { 6255 @Override 6256 public void run() { 6257 mTouchHighlightX = mTouchHighlightY = 0; 6258 invalidate(); 6259 } 6260 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6261 } 6262 } 6263 } 6264 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6265 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6266 (eventTime - mLastTouchUpTime), eventTime); 6267 } 6268 if (mSelectingText) { 6269 mDrawSelectionPointer = false; 6270 mSelectionStarted = nativeStartSelection(contentX, contentY); 6271 if (DebugFlags.WEB_VIEW) { 6272 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6273 } 6274 invalidate(); 6275 } 6276 } 6277 // Trigger the link 6278 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6279 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6280 mPrivateHandler.sendEmptyMessageDelayed( 6281 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6282 mPrivateHandler.sendEmptyMessageDelayed( 6283 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6284 if (inFullScreenMode() || mDeferTouchProcess) { 6285 mPreventDefault = PREVENT_DEFAULT_YES; 6286 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6287 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6288 } else { 6289 mPreventDefault = PREVENT_DEFAULT_NO; 6290 } 6291 // pass the touch events from UI thread to WebCore thread 6292 if (shouldForwardTouchEvent()) { 6293 TouchEventData ted = new TouchEventData(); 6294 ted.mAction = action; 6295 ted.mIds = new int[1]; 6296 ted.mIds[0] = ev.getPointerId(0); 6297 ted.mPoints = new Point[1]; 6298 ted.mPoints[0] = new Point(contentX, contentY); 6299 ted.mPointsInView = new Point[1]; 6300 ted.mPointsInView[0] = new Point(x, y); 6301 ted.mMetaState = ev.getMetaState(); 6302 ted.mReprocess = mDeferTouchProcess; 6303 ted.mNativeLayer = nativeScrollableLayer( 6304 contentX, contentY, ted.mNativeLayerRect, null); 6305 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6306 mTouchEventQueue.preQueueTouchEventData(ted); 6307 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6308 if (mDeferTouchProcess) { 6309 // still needs to set them for compute deltaX/Y 6310 mLastTouchX = x; 6311 mLastTouchY = y; 6312 break; 6313 } 6314 if (!inFullScreenMode()) { 6315 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6316 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6317 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6318 action, 0), TAP_TIMEOUT); 6319 } 6320 } 6321 } 6322 startTouch(x, y, eventTime); 6323 break; 6324 } 6325 case MotionEvent.ACTION_MOVE: { 6326 boolean firstMove = false; 6327 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6328 >= mTouchSlopSquare) { 6329 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6330 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6331 mConfirmMove = true; 6332 firstMove = true; 6333 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6334 mTouchMode = TOUCH_INIT_MODE; 6335 } 6336 if (sDisableNavcache) { 6337 removeTouchHighlight(); 6338 } 6339 } 6340 // pass the touch events from UI thread to WebCore thread 6341 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6342 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6343 TouchEventData ted = new TouchEventData(); 6344 ted.mAction = action; 6345 ted.mIds = new int[1]; 6346 ted.mIds[0] = ev.getPointerId(0); 6347 ted.mPoints = new Point[1]; 6348 ted.mPoints[0] = new Point(contentX, contentY); 6349 ted.mPointsInView = new Point[1]; 6350 ted.mPointsInView[0] = new Point(x, y); 6351 ted.mMetaState = ev.getMetaState(); 6352 ted.mReprocess = mDeferTouchProcess; 6353 ted.mNativeLayer = mCurrentScrollingLayerId; 6354 ted.mNativeLayerRect.set(mScrollingLayerRect); 6355 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6356 mTouchEventQueue.preQueueTouchEventData(ted); 6357 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6358 mLastSentTouchTime = eventTime; 6359 if (mDeferTouchProcess) { 6360 break; 6361 } 6362 if (firstMove && !inFullScreenMode()) { 6363 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6364 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6365 action, 0), TAP_TIMEOUT); 6366 } 6367 } 6368 if (mTouchMode == TOUCH_DONE_MODE 6369 || mPreventDefault == PREVENT_DEFAULT_YES) { 6370 // no dragging during scroll zoom animation, or when prevent 6371 // default is yes 6372 break; 6373 } 6374 if (mVelocityTracker == null) { 6375 Log.e(LOGTAG, "Got null mVelocityTracker when " 6376 + "mPreventDefault = " + mPreventDefault 6377 + " mDeferTouchProcess = " + mDeferTouchProcess 6378 + " mTouchMode = " + mTouchMode); 6379 } else { 6380 mVelocityTracker.addMovement(ev); 6381 } 6382 if (mSelectingText && mSelectionStarted) { 6383 if (DebugFlags.WEB_VIEW) { 6384 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6385 } 6386 ViewParent parent = getParent(); 6387 if (parent != null) { 6388 parent.requestDisallowInterceptTouchEvent(true); 6389 } 6390 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6391 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6392 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6393 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6394 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6395 && !mSentAutoScrollMessage) { 6396 mSentAutoScrollMessage = true; 6397 mPrivateHandler.sendEmptyMessageDelayed( 6398 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6399 } 6400 if (deltaX != 0 || deltaY != 0) { 6401 nativeExtendSelection(contentX, contentY); 6402 invalidate(); 6403 } 6404 break; 6405 } 6406 6407 if (mTouchMode != TOUCH_DRAG_MODE && 6408 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6409 6410 if (!mConfirmMove) { 6411 break; 6412 } 6413 6414 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6415 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6416 // track mLastTouchTime as we may need to do fling at 6417 // ACTION_UP 6418 mLastTouchTime = eventTime; 6419 break; 6420 } 6421 6422 // Only lock dragging to one axis if we don't have a scale in progress. 6423 // Scaling implies free-roaming movement. Note this is only ever a question 6424 // if mZoomManager.supportsPanDuringZoom() is true. 6425 final ScaleGestureDetector detector = 6426 mZoomManager.getMultiTouchGestureDetector(); 6427 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6428 if (detector == null || !detector.isInProgress()) { 6429 // if it starts nearly horizontal or vertical, enforce it 6430 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6431 mSnapScrollMode = SNAP_X; 6432 mSnapPositive = deltaX > 0; 6433 mAverageAngle = ANGLE_HORIZ; 6434 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6435 mSnapScrollMode = SNAP_Y; 6436 mSnapPositive = deltaY > 0; 6437 mAverageAngle = ANGLE_VERT; 6438 } 6439 } 6440 6441 mTouchMode = TOUCH_DRAG_MODE; 6442 mLastTouchX = x; 6443 mLastTouchY = y; 6444 deltaX = 0; 6445 deltaY = 0; 6446 6447 startScrollingLayer(x, y); 6448 startDrag(); 6449 } 6450 6451 // do pan 6452 boolean done = false; 6453 boolean keepScrollBarsVisible = false; 6454 if (deltaX == 0 && deltaY == 0) { 6455 keepScrollBarsVisible = done = true; 6456 } else { 6457 mAverageAngle += 6458 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6459 / MMA_WEIGHT_N; 6460 if (mSnapScrollMode != SNAP_NONE) { 6461 if (mSnapScrollMode == SNAP_Y) { 6462 // radical change means getting out of snap mode 6463 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6464 mSnapScrollMode = SNAP_NONE; 6465 } 6466 } 6467 if (mSnapScrollMode == SNAP_X) { 6468 // radical change means getting out of snap mode 6469 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6470 mSnapScrollMode = SNAP_NONE; 6471 } 6472 } 6473 } else { 6474 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6475 mSnapScrollMode = SNAP_X; 6476 mSnapPositive = deltaX > 0; 6477 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6478 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6479 mSnapScrollMode = SNAP_Y; 6480 mSnapPositive = deltaY > 0; 6481 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6482 } 6483 } 6484 if (mSnapScrollMode != SNAP_NONE) { 6485 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6486 deltaY = 0; 6487 } else { 6488 deltaX = 0; 6489 } 6490 } 6491 mLastTouchX = x; 6492 mLastTouchY = y; 6493 6494 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6495 mHeldMotionless = MOTIONLESS_FALSE; 6496 nativeSetIsScrolling(true); 6497 } else { 6498 mHeldMotionless = MOTIONLESS_TRUE; 6499 nativeSetIsScrolling(false); 6500 keepScrollBarsVisible = true; 6501 } 6502 6503 mLastTouchTime = eventTime; 6504 } 6505 6506 doDrag(deltaX, deltaY); 6507 6508 // Turn off scrollbars when dragging a layer. 6509 if (keepScrollBarsVisible && 6510 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6511 if (mHeldMotionless != MOTIONLESS_TRUE) { 6512 mHeldMotionless = MOTIONLESS_TRUE; 6513 invalidate(); 6514 } 6515 // keep the scrollbar on the screen even there is no scroll 6516 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6517 false); 6518 // Post a message so that we'll keep them alive while we're not scrolling. 6519 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6520 .obtainMessage(AWAKEN_SCROLL_BARS), 6521 ViewConfiguration.getScrollDefaultDelay()); 6522 // return false to indicate that we can't pan out of the 6523 // view space 6524 return !done; 6525 } else { 6526 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6527 } 6528 break; 6529 } 6530 case MotionEvent.ACTION_UP: { 6531 if (!isFocused()) requestFocus(); 6532 // pass the touch events from UI thread to WebCore thread 6533 if (shouldForwardTouchEvent()) { 6534 TouchEventData ted = new TouchEventData(); 6535 ted.mIds = new int[1]; 6536 ted.mIds[0] = ev.getPointerId(0); 6537 ted.mAction = action; 6538 ted.mPoints = new Point[1]; 6539 ted.mPoints[0] = new Point(contentX, contentY); 6540 ted.mPointsInView = new Point[1]; 6541 ted.mPointsInView[0] = new Point(x, y); 6542 ted.mMetaState = ev.getMetaState(); 6543 ted.mReprocess = mDeferTouchProcess; 6544 ted.mNativeLayer = mCurrentScrollingLayerId; 6545 ted.mNativeLayerRect.set(mScrollingLayerRect); 6546 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6547 mTouchEventQueue.preQueueTouchEventData(ted); 6548 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6549 } 6550 mLastTouchUpTime = eventTime; 6551 if (mSentAutoScrollMessage) { 6552 mAutoScrollX = mAutoScrollY = 0; 6553 } 6554 switch (mTouchMode) { 6555 case TOUCH_DOUBLE_TAP_MODE: // double tap 6556 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6557 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6558 if (inFullScreenMode() || mDeferTouchProcess) { 6559 TouchEventData ted = new TouchEventData(); 6560 ted.mIds = new int[1]; 6561 ted.mIds[0] = ev.getPointerId(0); 6562 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6563 ted.mPoints = new Point[1]; 6564 ted.mPoints[0] = new Point(contentX, contentY); 6565 ted.mPointsInView = new Point[1]; 6566 ted.mPointsInView[0] = new Point(x, y); 6567 ted.mMetaState = ev.getMetaState(); 6568 ted.mReprocess = mDeferTouchProcess; 6569 ted.mNativeLayer = nativeScrollableLayer( 6570 contentX, contentY, 6571 ted.mNativeLayerRect, null); 6572 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6573 mTouchEventQueue.preQueueTouchEventData(ted); 6574 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6575 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6576 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6577 mTouchMode = TOUCH_DONE_MODE; 6578 } 6579 break; 6580 case TOUCH_INIT_MODE: // tap 6581 case TOUCH_SHORTPRESS_START_MODE: 6582 case TOUCH_SHORTPRESS_MODE: 6583 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6584 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6585 if (mConfirmMove) { 6586 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6587 " WebCore's response for touch down."); 6588 if (mPreventDefault != PREVENT_DEFAULT_YES 6589 && (computeMaxScrollX() > 0 6590 || computeMaxScrollY() > 0)) { 6591 // If the user has performed a very quick touch 6592 // sequence it is possible that we may get here 6593 // before WebCore has had a chance to process the events. 6594 // In this case, any call to preventDefault in the 6595 // JS touch handler will not have been executed yet. 6596 // Hence we will see both the UI (now) and WebCore 6597 // (when context switches) handling the event, 6598 // regardless of whether the web developer actually 6599 // doeses preventDefault in their touch handler. This 6600 // is the nature of our asynchronous touch model. 6601 6602 // we will not rewrite drag code here, but we 6603 // will try fling if it applies. 6604 WebViewCore.reducePriority(); 6605 // to get better performance, pause updating the 6606 // picture 6607 WebViewCore.pauseUpdatePicture(mWebViewCore); 6608 // fall through to TOUCH_DRAG_MODE 6609 } else { 6610 // WebKit may consume the touch event and modify 6611 // DOM. drawContentPicture() will be called with 6612 // animateSroll as true for better performance. 6613 // Force redraw in high-quality. 6614 invalidate(); 6615 break; 6616 } 6617 } else { 6618 if (mSelectingText) { 6619 // tapping on selection or controls does nothing 6620 if (!nativeHitSelection(contentX, contentY)) { 6621 selectionDone(); 6622 } 6623 break; 6624 } 6625 // only trigger double tap if the WebView is 6626 // scalable 6627 if (mTouchMode == TOUCH_INIT_MODE 6628 && (canZoomIn() || canZoomOut())) { 6629 mPrivateHandler.sendEmptyMessageDelayed( 6630 RELEASE_SINGLE_TAP, ViewConfiguration 6631 .getDoubleTapTimeout()); 6632 } else { 6633 doShortPress(); 6634 } 6635 break; 6636 } 6637 case TOUCH_DRAG_MODE: 6638 case TOUCH_DRAG_LAYER_MODE: 6639 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6640 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6641 // if the user waits a while w/o moving before the 6642 // up, we don't want to do a fling 6643 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6644 if (mVelocityTracker == null) { 6645 Log.e(LOGTAG, "Got null mVelocityTracker when " 6646 + "mPreventDefault = " 6647 + mPreventDefault 6648 + " mDeferTouchProcess = " 6649 + mDeferTouchProcess); 6650 } else { 6651 mVelocityTracker.addMovement(ev); 6652 } 6653 // set to MOTIONLESS_IGNORE so that it won't keep 6654 // removing and sending message in 6655 // drawCoreAndCursorRing() 6656 mHeldMotionless = MOTIONLESS_IGNORE; 6657 doFling(); 6658 break; 6659 } else { 6660 if (mScroller.springBack(mScrollX, mScrollY, 0, 6661 computeMaxScrollX(), 0, 6662 computeMaxScrollY())) { 6663 invalidate(); 6664 } 6665 } 6666 // redraw in high-quality, as we're done dragging 6667 mHeldMotionless = MOTIONLESS_TRUE; 6668 invalidate(); 6669 // fall through 6670 case TOUCH_DRAG_START_MODE: 6671 // TOUCH_DRAG_START_MODE should not happen for the real 6672 // device as we almost certain will get a MOVE. But this 6673 // is possible on emulator. 6674 mLastVelocity = 0; 6675 WebViewCore.resumePriority(); 6676 if (!mSelectingText) { 6677 WebViewCore.resumeUpdatePicture(mWebViewCore); 6678 } 6679 break; 6680 } 6681 stopTouch(); 6682 break; 6683 } 6684 case MotionEvent.ACTION_CANCEL: { 6685 if (mTouchMode == TOUCH_DRAG_MODE) { 6686 mScroller.springBack(mScrollX, mScrollY, 0, 6687 computeMaxScrollX(), 0, computeMaxScrollY()); 6688 invalidate(); 6689 } 6690 cancelWebCoreTouchEvent(contentX, contentY, false); 6691 cancelTouch(); 6692 break; 6693 } 6694 } 6695 return true; 6696 } 6697 6698 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6699 TouchEventData ted = new TouchEventData(); 6700 ted.mAction = ev.getActionMasked(); 6701 final int count = ev.getPointerCount(); 6702 ted.mIds = new int[count]; 6703 ted.mPoints = new Point[count]; 6704 ted.mPointsInView = new Point[count]; 6705 for (int c = 0; c < count; c++) { 6706 ted.mIds[c] = ev.getPointerId(c); 6707 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6708 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6709 ted.mPoints[c] = new Point(x, y); 6710 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6711 } 6712 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6713 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6714 ted.mActionIndex = ev.getActionIndex(); 6715 } 6716 ted.mMetaState = ev.getMetaState(); 6717 ted.mReprocess = true; 6718 ted.mMotionEvent = MotionEvent.obtain(ev); 6719 ted.mSequence = sequence; 6720 mTouchEventQueue.preQueueTouchEventData(ted); 6721 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6722 cancelLongPress(); 6723 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6724 } 6725 6726 void handleMultiTouchInWebView(MotionEvent ev) { 6727 if (DebugFlags.WEB_VIEW) { 6728 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6729 + " mTouchMode=" + mTouchMode 6730 + " numPointers=" + ev.getPointerCount() 6731 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6732 } 6733 6734 final ScaleGestureDetector detector = 6735 mZoomManager.getMultiTouchGestureDetector(); 6736 6737 // A few apps use WebView but don't instantiate gesture detector. 6738 // We don't need to support multi touch for them. 6739 if (detector == null) return; 6740 6741 float x = ev.getX(); 6742 float y = ev.getY(); 6743 6744 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6745 detector.onTouchEvent(ev); 6746 6747 if (detector.isInProgress()) { 6748 if (DebugFlags.WEB_VIEW) { 6749 Log.v(LOGTAG, "detector is in progress"); 6750 } 6751 mLastTouchTime = ev.getEventTime(); 6752 x = detector.getFocusX(); 6753 y = detector.getFocusY(); 6754 6755 cancelLongPress(); 6756 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6757 if (!mZoomManager.supportsPanDuringZoom()) { 6758 return; 6759 } 6760 mTouchMode = TOUCH_DRAG_MODE; 6761 if (mVelocityTracker == null) { 6762 mVelocityTracker = VelocityTracker.obtain(); 6763 } 6764 } 6765 } 6766 6767 int action = ev.getActionMasked(); 6768 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6769 cancelTouch(); 6770 action = MotionEvent.ACTION_DOWN; 6771 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6772 // set mLastTouchX/Y to the remaining points for multi-touch. 6773 mLastTouchX = Math.round(x); 6774 mLastTouchY = Math.round(y); 6775 } else if (action == MotionEvent.ACTION_MOVE) { 6776 // negative x or y indicate it is on the edge, skip it. 6777 if (x < 0 || y < 0) { 6778 return; 6779 } 6780 } 6781 6782 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6783 } 6784 6785 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6786 if (shouldForwardTouchEvent()) { 6787 if (removeEvents) { 6788 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6789 } 6790 TouchEventData ted = new TouchEventData(); 6791 ted.mIds = new int[1]; 6792 ted.mIds[0] = 0; 6793 ted.mPoints = new Point[1]; 6794 ted.mPoints[0] = new Point(x, y); 6795 ted.mPointsInView = new Point[1]; 6796 int viewX = contentToViewX(x) - mScrollX; 6797 int viewY = contentToViewY(y) - mScrollY; 6798 ted.mPointsInView[0] = new Point(viewX, viewY); 6799 ted.mAction = MotionEvent.ACTION_CANCEL; 6800 ted.mNativeLayer = nativeScrollableLayer( 6801 x, y, ted.mNativeLayerRect, null); 6802 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6803 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6804 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6805 6806 if (removeEvents) { 6807 // Mark this after sending the message above; we should 6808 // be willing to ignore the cancel event that we just sent. 6809 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6810 } 6811 } 6812 } 6813 6814 private void startTouch(float x, float y, long eventTime) { 6815 // Remember where the motion event started 6816 mStartTouchX = mLastTouchX = Math.round(x); 6817 mStartTouchY = mLastTouchY = Math.round(y); 6818 mLastTouchTime = eventTime; 6819 mVelocityTracker = VelocityTracker.obtain(); 6820 mSnapScrollMode = SNAP_NONE; 6821 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6822 ViewConfiguration.getTapTimeout()); 6823 } 6824 6825 private void startDrag() { 6826 WebViewCore.reducePriority(); 6827 // to get better performance, pause updating the picture 6828 WebViewCore.pauseUpdatePicture(mWebViewCore); 6829 nativeSetIsScrolling(true); 6830 6831 if (!mDragFromTextInput) { 6832 nativeHideCursor(); 6833 } 6834 6835 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6836 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6837 mZoomManager.invokeZoomPicker(); 6838 } 6839 } 6840 6841 private void doDrag(int deltaX, int deltaY) { 6842 if ((deltaX | deltaY) != 0) { 6843 int oldX = mScrollX; 6844 int oldY = mScrollY; 6845 int rangeX = computeMaxScrollX(); 6846 int rangeY = computeMaxScrollY(); 6847 // Check for the original scrolling layer in case we change 6848 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6849 // reached the edge of a layer but mScrollingLayer will be non-zero 6850 // if we initiated the drag on a layer. 6851 if (mCurrentScrollingLayerId != 0) { 6852 final int contentX = viewToContentDimension(deltaX); 6853 final int contentY = viewToContentDimension(deltaY); 6854 6855 // Check the scrolling bounds to see if we will actually do any 6856 // scrolling. The rectangle is in document coordinates. 6857 final int maxX = mScrollingLayerRect.right; 6858 final int maxY = mScrollingLayerRect.bottom; 6859 final int resultX = Math.max(0, 6860 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6861 final int resultY = Math.max(0, 6862 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6863 6864 if (resultX != mScrollingLayerRect.left || 6865 resultY != mScrollingLayerRect.top) { 6866 // In case we switched to dragging the page. 6867 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6868 deltaX = contentX; 6869 deltaY = contentY; 6870 oldX = mScrollingLayerRect.left; 6871 oldY = mScrollingLayerRect.top; 6872 rangeX = maxX; 6873 rangeY = maxY; 6874 } else { 6875 // Scroll the main page if we are not going to scroll the 6876 // layer. This does not reset mScrollingLayer in case the 6877 // user changes directions and the layer can scroll the 6878 // other way. 6879 mTouchMode = TOUCH_DRAG_MODE; 6880 } 6881 } 6882 6883 if (mOverScrollGlow != null) { 6884 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6885 } 6886 6887 overScrollBy(deltaX, deltaY, oldX, oldY, 6888 rangeX, rangeY, 6889 mOverscrollDistance, mOverscrollDistance, true); 6890 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6891 invalidate(); 6892 } 6893 } 6894 mZoomManager.keepZoomPickerVisible(); 6895 } 6896 6897 private void stopTouch() { 6898 if (mScroller.isFinished() && !mSelectingText 6899 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6900 WebViewCore.resumePriority(); 6901 WebViewCore.resumeUpdatePicture(mWebViewCore); 6902 nativeSetIsScrolling(false); 6903 } 6904 6905 // we also use mVelocityTracker == null to tell us that we are 6906 // not "moving around", so we can take the slower/prettier 6907 // mode in the drawing code 6908 if (mVelocityTracker != null) { 6909 mVelocityTracker.recycle(); 6910 mVelocityTracker = null; 6911 } 6912 6913 // Release any pulled glows 6914 if (mOverScrollGlow != null) { 6915 mOverScrollGlow.releaseAll(); 6916 } 6917 } 6918 6919 private void cancelTouch() { 6920 // we also use mVelocityTracker == null to tell us that we are 6921 // not "moving around", so we can take the slower/prettier 6922 // mode in the drawing code 6923 if (mVelocityTracker != null) { 6924 mVelocityTracker.recycle(); 6925 mVelocityTracker = null; 6926 } 6927 6928 if ((mTouchMode == TOUCH_DRAG_MODE 6929 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6930 WebViewCore.resumePriority(); 6931 WebViewCore.resumeUpdatePicture(mWebViewCore); 6932 nativeSetIsScrolling(false); 6933 } 6934 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6935 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6936 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6937 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6938 if (sDisableNavcache) { 6939 removeTouchHighlight(); 6940 } 6941 mHeldMotionless = MOTIONLESS_TRUE; 6942 mTouchMode = TOUCH_DONE_MODE; 6943 nativeHideCursor(); 6944 } 6945 6946 @Override 6947 public boolean onGenericMotionEvent(MotionEvent event) { 6948 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6949 switch (event.getAction()) { 6950 case MotionEvent.ACTION_SCROLL: { 6951 final float vscroll; 6952 final float hscroll; 6953 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6954 vscroll = 0; 6955 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6956 } else { 6957 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6958 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6959 } 6960 if (hscroll != 0 || vscroll != 0) { 6961 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6962 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6963 if (pinScrollBy(hdelta, vdelta, false, 0)) { 6964 return true; 6965 } 6966 } 6967 } 6968 } 6969 } 6970 return super.onGenericMotionEvent(event); 6971 } 6972 6973 private long mTrackballFirstTime = 0; 6974 private long mTrackballLastTime = 0; 6975 private float mTrackballRemainsX = 0.0f; 6976 private float mTrackballRemainsY = 0.0f; 6977 private int mTrackballXMove = 0; 6978 private int mTrackballYMove = 0; 6979 private boolean mSelectingText = false; 6980 private boolean mSelectionStarted = false; 6981 private boolean mExtendSelection = false; 6982 private boolean mDrawSelectionPointer = false; 6983 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6984 private static final int TRACKBALL_TIMEOUT = 200; 6985 private static final int TRACKBALL_WAIT = 100; 6986 private static final int TRACKBALL_SCALE = 400; 6987 private static final int TRACKBALL_SCROLL_COUNT = 5; 6988 private static final int TRACKBALL_MOVE_COUNT = 10; 6989 private static final int TRACKBALL_MULTIPLIER = 3; 6990 private static final int SELECT_CURSOR_OFFSET = 16; 6991 private static final int SELECT_SCROLL = 5; 6992 private int mSelectX = 0; 6993 private int mSelectY = 0; 6994 private boolean mFocusSizeChanged = false; 6995 private boolean mTrackballDown = false; 6996 private long mTrackballUpTime = 0; 6997 private long mLastCursorTime = 0; 6998 private Rect mLastCursorBounds; 6999 7000 // Set by default; BrowserActivity clears to interpret trackball data 7001 // directly for movement. Currently, the framework only passes 7002 // arrow key events, not trackball events, from one child to the next 7003 private boolean mMapTrackballToArrowKeys = true; 7004 7005 private DrawData mDelaySetPicture; 7006 private DrawData mLoadedPicture; 7007 7008 public void setMapTrackballToArrowKeys(boolean setMap) { 7009 checkThread(); 7010 mMapTrackballToArrowKeys = setMap; 7011 } 7012 7013 void resetTrackballTime() { 7014 mTrackballLastTime = 0; 7015 } 7016 7017 @Override 7018 public boolean onTrackballEvent(MotionEvent ev) { 7019 long time = ev.getEventTime(); 7020 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 7021 if (ev.getY() > 0) pageDown(true); 7022 if (ev.getY() < 0) pageUp(true); 7023 return true; 7024 } 7025 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 7026 if (mSelectingText) { 7027 return true; // discard press if copy in progress 7028 } 7029 mTrackballDown = true; 7030 if (mNativeClass == 0) { 7031 return false; 7032 } 7033 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 7034 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 7035 nativeSelectBestAt(mLastCursorBounds); 7036 } 7037 if (DebugFlags.WEB_VIEW) { 7038 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 7039 + " time=" + time 7040 + " mLastCursorTime=" + mLastCursorTime); 7041 } 7042 if (isInTouchMode()) requestFocusFromTouch(); 7043 return false; // let common code in onKeyDown at it 7044 } 7045 if (ev.getAction() == MotionEvent.ACTION_UP) { 7046 // LONG_PRESS_CENTER is set in common onKeyDown 7047 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 7048 mTrackballDown = false; 7049 mTrackballUpTime = time; 7050 if (mSelectingText) { 7051 if (mExtendSelection) { 7052 copySelection(); 7053 selectionDone(); 7054 } else { 7055 mExtendSelection = true; 7056 nativeSetExtendSelection(); 7057 invalidate(); // draw the i-beam instead of the arrow 7058 } 7059 return true; // discard press if copy in progress 7060 } 7061 if (DebugFlags.WEB_VIEW) { 7062 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 7063 + " time=" + time 7064 ); 7065 } 7066 return false; // let common code in onKeyUp at it 7067 } 7068 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 7069 AccessibilityManager.getInstance(mContext).isEnabled()) { 7070 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 7071 return false; 7072 } 7073 if (mTrackballDown) { 7074 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 7075 return true; // discard move if trackball is down 7076 } 7077 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 7078 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 7079 return true; 7080 } 7081 // TODO: alternatively we can do panning as touch does 7082 switchOutDrawHistory(); 7083 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 7084 if (DebugFlags.WEB_VIEW) { 7085 Log.v(LOGTAG, "onTrackballEvent time=" 7086 + time + " last=" + mTrackballLastTime); 7087 } 7088 mTrackballFirstTime = time; 7089 mTrackballXMove = mTrackballYMove = 0; 7090 } 7091 mTrackballLastTime = time; 7092 if (DebugFlags.WEB_VIEW) { 7093 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 7094 } 7095 mTrackballRemainsX += ev.getX(); 7096 mTrackballRemainsY += ev.getY(); 7097 doTrackball(time, ev.getMetaState()); 7098 return true; 7099 } 7100 7101 void moveSelection(float xRate, float yRate) { 7102 if (mNativeClass == 0) 7103 return; 7104 int width = getViewWidth(); 7105 int height = getViewHeight(); 7106 mSelectX += xRate; 7107 mSelectY += yRate; 7108 int maxX = width + mScrollX; 7109 int maxY = height + mScrollY; 7110 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 7111 , mSelectX)); 7112 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 7113 , mSelectY)); 7114 if (DebugFlags.WEB_VIEW) { 7115 Log.v(LOGTAG, "moveSelection" 7116 + " mSelectX=" + mSelectX 7117 + " mSelectY=" + mSelectY 7118 + " mScrollX=" + mScrollX 7119 + " mScrollY=" + mScrollY 7120 + " xRate=" + xRate 7121 + " yRate=" + yRate 7122 ); 7123 } 7124 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 7125 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 7126 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 7127 : 0; 7128 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 7129 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 7130 : 0; 7131 pinScrollBy(scrollX, scrollY, true, 0); 7132 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 7133 requestRectangleOnScreen(select); 7134 invalidate(); 7135 } 7136 7137 private int scaleTrackballX(float xRate, int width) { 7138 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 7139 int nextXMove = xMove; 7140 if (xMove > 0) { 7141 if (xMove > mTrackballXMove) { 7142 xMove -= mTrackballXMove; 7143 } 7144 } else if (xMove < mTrackballXMove) { 7145 xMove -= mTrackballXMove; 7146 } 7147 mTrackballXMove = nextXMove; 7148 return xMove; 7149 } 7150 7151 private int scaleTrackballY(float yRate, int height) { 7152 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7153 int nextYMove = yMove; 7154 if (yMove > 0) { 7155 if (yMove > mTrackballYMove) { 7156 yMove -= mTrackballYMove; 7157 } 7158 } else if (yMove < mTrackballYMove) { 7159 yMove -= mTrackballYMove; 7160 } 7161 mTrackballYMove = nextYMove; 7162 return yMove; 7163 } 7164 7165 private int keyCodeToSoundsEffect(int keyCode) { 7166 switch(keyCode) { 7167 case KeyEvent.KEYCODE_DPAD_UP: 7168 return SoundEffectConstants.NAVIGATION_UP; 7169 case KeyEvent.KEYCODE_DPAD_RIGHT: 7170 return SoundEffectConstants.NAVIGATION_RIGHT; 7171 case KeyEvent.KEYCODE_DPAD_DOWN: 7172 return SoundEffectConstants.NAVIGATION_DOWN; 7173 case KeyEvent.KEYCODE_DPAD_LEFT: 7174 return SoundEffectConstants.NAVIGATION_LEFT; 7175 } 7176 throw new IllegalArgumentException("keyCode must be one of " + 7177 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7178 "KEYCODE_DPAD_LEFT}."); 7179 } 7180 7181 private void doTrackball(long time, int metaState) { 7182 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7183 if (elapsed == 0) { 7184 elapsed = TRACKBALL_TIMEOUT; 7185 } 7186 float xRate = mTrackballRemainsX * 1000 / elapsed; 7187 float yRate = mTrackballRemainsY * 1000 / elapsed; 7188 int viewWidth = getViewWidth(); 7189 int viewHeight = getViewHeight(); 7190 if (mSelectingText) { 7191 if (!mDrawSelectionPointer) { 7192 // The last selection was made by touch, disabling drawing the 7193 // selection pointer. Allow the trackball to adjust the 7194 // position of the touch control. 7195 mSelectX = contentToViewX(nativeSelectionX()); 7196 mSelectY = contentToViewY(nativeSelectionY()); 7197 mDrawSelectionPointer = mExtendSelection = true; 7198 nativeSetExtendSelection(); 7199 } 7200 moveSelection(scaleTrackballX(xRate, viewWidth), 7201 scaleTrackballY(yRate, viewHeight)); 7202 mTrackballRemainsX = mTrackballRemainsY = 0; 7203 return; 7204 } 7205 float ax = Math.abs(xRate); 7206 float ay = Math.abs(yRate); 7207 float maxA = Math.max(ax, ay); 7208 if (DebugFlags.WEB_VIEW) { 7209 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7210 + " xRate=" + xRate 7211 + " yRate=" + yRate 7212 + " mTrackballRemainsX=" + mTrackballRemainsX 7213 + " mTrackballRemainsY=" + mTrackballRemainsY); 7214 } 7215 int width = mContentWidth - viewWidth; 7216 int height = mContentHeight - viewHeight; 7217 if (width < 0) width = 0; 7218 if (height < 0) height = 0; 7219 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7220 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7221 maxA = Math.max(ax, ay); 7222 int count = Math.max(0, (int) maxA); 7223 int oldScrollX = mScrollX; 7224 int oldScrollY = mScrollY; 7225 if (count > 0) { 7226 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7227 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7228 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7229 KeyEvent.KEYCODE_DPAD_RIGHT; 7230 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7231 if (DebugFlags.WEB_VIEW) { 7232 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7233 + " count=" + count 7234 + " mTrackballRemainsX=" + mTrackballRemainsX 7235 + " mTrackballRemainsY=" + mTrackballRemainsY); 7236 } 7237 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7238 for (int i = 0; i < count; i++) { 7239 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7240 } 7241 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7242 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7243 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7244 } 7245 mTrackballRemainsX = mTrackballRemainsY = 0; 7246 } 7247 if (count >= TRACKBALL_SCROLL_COUNT) { 7248 int xMove = scaleTrackballX(xRate, width); 7249 int yMove = scaleTrackballY(yRate, height); 7250 if (DebugFlags.WEB_VIEW) { 7251 Log.v(LOGTAG, "doTrackball pinScrollBy" 7252 + " count=" + count 7253 + " xMove=" + xMove + " yMove=" + yMove 7254 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7255 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7256 ); 7257 } 7258 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7259 xMove = 0; 7260 } 7261 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7262 yMove = 0; 7263 } 7264 if (xMove != 0 || yMove != 0) { 7265 pinScrollBy(xMove, yMove, true, 0); 7266 } 7267 } 7268 } 7269 7270 /** 7271 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7272 * @return Maximum horizontal scroll position within real content 7273 */ 7274 int computeMaxScrollX() { 7275 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7276 } 7277 7278 /** 7279 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7280 * @return Maximum vertical scroll position within real content 7281 */ 7282 int computeMaxScrollY() { 7283 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7284 - getViewHeightWithTitle(), 0); 7285 } 7286 7287 boolean updateScrollCoordinates(int x, int y) { 7288 int oldX = mScrollX; 7289 int oldY = mScrollY; 7290 mScrollX = x; 7291 mScrollY = y; 7292 if (oldX != mScrollX || oldY != mScrollY) { 7293 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7294 return true; 7295 } else { 7296 return false; 7297 } 7298 } 7299 7300 public void flingScroll(int vx, int vy) { 7301 checkThread(); 7302 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7303 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7304 invalidate(); 7305 } 7306 7307 private void doFling() { 7308 if (mVelocityTracker == null) { 7309 return; 7310 } 7311 int maxX = computeMaxScrollX(); 7312 int maxY = computeMaxScrollY(); 7313 7314 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7315 int vx = (int) mVelocityTracker.getXVelocity(); 7316 int vy = (int) mVelocityTracker.getYVelocity(); 7317 7318 int scrollX = mScrollX; 7319 int scrollY = mScrollY; 7320 int overscrollDistance = mOverscrollDistance; 7321 int overflingDistance = mOverflingDistance; 7322 7323 // Use the layer's scroll data if applicable. 7324 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7325 scrollX = mScrollingLayerRect.left; 7326 scrollY = mScrollingLayerRect.top; 7327 maxX = mScrollingLayerRect.right; 7328 maxY = mScrollingLayerRect.bottom; 7329 // No overscrolling for layers. 7330 overscrollDistance = overflingDistance = 0; 7331 } 7332 7333 if (mSnapScrollMode != SNAP_NONE) { 7334 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7335 vy = 0; 7336 } else { 7337 vx = 0; 7338 } 7339 } 7340 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7341 WebViewCore.resumePriority(); 7342 if (!mSelectingText) { 7343 WebViewCore.resumeUpdatePicture(mWebViewCore); 7344 } 7345 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7346 invalidate(); 7347 } 7348 return; 7349 } 7350 float currentVelocity = mScroller.getCurrVelocity(); 7351 float velocity = (float) Math.hypot(vx, vy); 7352 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7353 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7354 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7355 - Math.atan2(vy, vx))); 7356 final float circle = (float) (Math.PI) * 2.0f; 7357 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7358 vx += currentVelocity * mLastVelX / mLastVelocity; 7359 vy += currentVelocity * mLastVelY / mLastVelocity; 7360 velocity = (float) Math.hypot(vx, vy); 7361 if (DebugFlags.WEB_VIEW) { 7362 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7363 } 7364 } else if (DebugFlags.WEB_VIEW) { 7365 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7366 } 7367 } else if (DebugFlags.WEB_VIEW) { 7368 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7369 + " current=" + currentVelocity 7370 + " vx=" + vx + " vy=" + vy 7371 + " maxX=" + maxX + " maxY=" + maxY 7372 + " scrollX=" + scrollX + " scrollY=" + scrollY 7373 + " layer=" + mCurrentScrollingLayerId); 7374 } 7375 7376 // Allow sloppy flings without overscrolling at the edges. 7377 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7378 vx = 0; 7379 } 7380 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7381 vy = 0; 7382 } 7383 7384 if (overscrollDistance < overflingDistance) { 7385 if ((vx > 0 && scrollX == -overscrollDistance) || 7386 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7387 vx = 0; 7388 } 7389 if ((vy > 0 && scrollY == -overscrollDistance) || 7390 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7391 vy = 0; 7392 } 7393 } 7394 7395 mLastVelX = vx; 7396 mLastVelY = vy; 7397 mLastVelocity = velocity; 7398 7399 // no horizontal overscroll if the content just fits 7400 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7401 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7402 // Duration is calculated based on velocity. With range boundaries and overscroll 7403 // we may not know how long the final animation will take. (Hence the deprecation 7404 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7405 // resumes during this effect we will take a performance hit. See computeScroll; 7406 // we resume webcore there when the animation is finished. 7407 final int time = mScroller.getDuration(); 7408 7409 // Suppress scrollbars for layer scrolling. 7410 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7411 awakenScrollBars(time); 7412 } 7413 7414 invalidate(); 7415 } 7416 7417 /** 7418 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7419 * in charge of installing this view to the view hierarchy. This view will 7420 * become visible when the user starts scrolling via touch and fade away if 7421 * the user does not interact with it. 7422 * <p/> 7423 * API version 3 introduces a built-in zoom mechanism that is shown 7424 * automatically by the MapView. This is the preferred approach for 7425 * showing the zoom UI. 7426 * 7427 * @deprecated The built-in zoom mechanism is preferred, see 7428 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7429 */ 7430 @Deprecated 7431 public View getZoomControls() { 7432 checkThread(); 7433 if (!getSettings().supportZoom()) { 7434 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7435 return null; 7436 } 7437 return mZoomManager.getExternalZoomPicker(); 7438 } 7439 7440 void dismissZoomControl() { 7441 mZoomManager.dismissZoomPicker(); 7442 } 7443 7444 float getDefaultZoomScale() { 7445 return mZoomManager.getDefaultScale(); 7446 } 7447 7448 /** 7449 * Return the overview scale of the WebView 7450 * @return The overview scale. 7451 */ 7452 float getZoomOverviewScale() { 7453 return mZoomManager.getZoomOverviewScale(); 7454 } 7455 7456 /** 7457 * @return TRUE if the WebView can be zoomed in. 7458 */ 7459 public boolean canZoomIn() { 7460 checkThread(); 7461 return mZoomManager.canZoomIn(); 7462 } 7463 7464 /** 7465 * @return TRUE if the WebView can be zoomed out. 7466 */ 7467 public boolean canZoomOut() { 7468 checkThread(); 7469 return mZoomManager.canZoomOut(); 7470 } 7471 7472 /** 7473 * Perform zoom in in the webview 7474 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7475 */ 7476 public boolean zoomIn() { 7477 checkThread(); 7478 return mZoomManager.zoomIn(); 7479 } 7480 7481 /** 7482 * Perform zoom out in the webview 7483 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7484 */ 7485 public boolean zoomOut() { 7486 checkThread(); 7487 return mZoomManager.zoomOut(); 7488 } 7489 7490 /** 7491 * This selects the best clickable target at mLastTouchX and mLastTouchY 7492 * and calls showCursorTimed on the native side 7493 */ 7494 private void updateSelection() { 7495 if (mNativeClass == 0 || sDisableNavcache) { 7496 return; 7497 } 7498 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7499 // mLastTouchX and mLastTouchY are the point in the current viewport 7500 int contentX = viewToContentX(mLastTouchX + mScrollX); 7501 int contentY = viewToContentY(mLastTouchY + mScrollY); 7502 int slop = viewToContentDimension(mNavSlop); 7503 Rect rect = new Rect(contentX - slop, contentY - slop, 7504 contentX + slop, contentY + slop); 7505 nativeSelectBestAt(rect); 7506 mInitialHitTestResult = hitTestResult(null); 7507 } 7508 7509 /** 7510 * Scroll the focused text field to match the WebTextView 7511 * @param xPercent New x position of the WebTextView from 0 to 1. 7512 */ 7513 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7514 if (!inEditingMode() || mWebViewCore == null) { 7515 return; 7516 } 7517 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7518 new Float(xPercent)); 7519 } 7520 7521 /** 7522 * Scroll the focused textarea vertically to match the WebTextView 7523 * @param y New y position of the WebTextView in view coordinates 7524 */ 7525 /* package */ void scrollFocusedTextInputY(int y) { 7526 if (!inEditingMode() || mWebViewCore == null) { 7527 return; 7528 } 7529 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7530 } 7531 7532 /** 7533 * Set our starting point and time for a drag from the WebTextView. 7534 */ 7535 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7536 if (!inEditingMode()) { 7537 return; 7538 } 7539 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7540 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7541 mLastTouchTime = eventTime; 7542 if (!mScroller.isFinished()) { 7543 abortAnimation(); 7544 } 7545 mSnapScrollMode = SNAP_NONE; 7546 mVelocityTracker = VelocityTracker.obtain(); 7547 mTouchMode = TOUCH_DRAG_START_MODE; 7548 } 7549 7550 /** 7551 * Given a motion event from the WebTextView, set its location to our 7552 * coordinates, and handle the event. 7553 */ 7554 /*package*/ boolean textFieldDrag(MotionEvent event) { 7555 if (!inEditingMode()) { 7556 return false; 7557 } 7558 mDragFromTextInput = true; 7559 event.offsetLocation((mWebTextView.getLeft() - mScrollX), 7560 (mWebTextView.getTop() - mScrollY)); 7561 boolean result = onTouchEvent(event); 7562 mDragFromTextInput = false; 7563 return result; 7564 } 7565 7566 /** 7567 * Due a touch up from a WebTextView. This will be handled by webkit to 7568 * change the selection. 7569 * @param event MotionEvent in the WebTextView's coordinates. 7570 */ 7571 /*package*/ void touchUpOnTextField(MotionEvent event) { 7572 if (!inEditingMode()) { 7573 return; 7574 } 7575 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7576 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7577 int slop = viewToContentDimension(mNavSlop); 7578 nativeMotionUp(x, y, slop); 7579 } 7580 7581 /** 7582 * Called when pressing the center key or trackball on a textfield. 7583 */ 7584 /*package*/ void centerKeyPressOnTextField() { 7585 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7586 nativeCursorNodePointer()); 7587 } 7588 7589 private void doShortPress() { 7590 if (mNativeClass == 0) { 7591 return; 7592 } 7593 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7594 return; 7595 } 7596 mTouchMode = TOUCH_DONE_MODE; 7597 updateSelection(); 7598 switchOutDrawHistory(); 7599 // mLastTouchX and mLastTouchY are the point in the current viewport 7600 int contentX = viewToContentX(mLastTouchX + mScrollX); 7601 int contentY = viewToContentY(mLastTouchY + mScrollY); 7602 int slop = viewToContentDimension(mNavSlop); 7603 if (sDisableNavcache && !mTouchHighlightRegion.isEmpty()) { 7604 // set mTouchHighlightRequested to 0 to cause an immediate 7605 // drawing of the touch rings 7606 mTouchHighlightRequested = 0; 7607 invalidate(mTouchHighlightRegion.getBounds()); 7608 mPrivateHandler.postDelayed(new Runnable() { 7609 @Override 7610 public void run() { 7611 removeTouchHighlight(); 7612 } 7613 }, ViewConfiguration.getPressedStateDuration()); 7614 } 7615 if (sDisableNavcache) { 7616 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7617 // use "0" as generation id to inform WebKit to use the same x/y as 7618 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7619 touchUpData.mMoveGeneration = 0; 7620 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7621 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7622 WebViewCore.MotionUpData motionUpData = new WebViewCore 7623 .MotionUpData(); 7624 motionUpData.mFrame = nativeCacheHitFramePointer(); 7625 motionUpData.mNode = nativeCacheHitNodePointer(); 7626 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7627 motionUpData.mX = contentX; 7628 motionUpData.mY = contentY; 7629 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7630 motionUpData); 7631 } else { 7632 doMotionUp(contentX, contentY); 7633 } 7634 } 7635 7636 private void doMotionUp(int contentX, int contentY) { 7637 int slop = viewToContentDimension(mNavSlop); 7638 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7639 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7640 } 7641 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7642 playSoundEffect(SoundEffectConstants.CLICK); 7643 } 7644 } 7645 7646 void sendPluginDrawMsg() { 7647 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7648 } 7649 7650 /** 7651 * Returns plugin bounds if x/y in content coordinates corresponds to a 7652 * plugin. Otherwise a NULL rectangle is returned. 7653 */ 7654 Rect getPluginBounds(int x, int y) { 7655 int slop = viewToContentDimension(mNavSlop); 7656 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7657 return nativeCacheHitNodeBounds(); 7658 } else { 7659 return null; 7660 } 7661 } 7662 7663 /* 7664 * Return true if the rect (e.g. plugin) is fully visible and maximized 7665 * inside the WebView. 7666 */ 7667 boolean isRectFitOnScreen(Rect rect) { 7668 final int rectWidth = rect.width(); 7669 final int rectHeight = rect.height(); 7670 final int viewWidth = getViewWidth(); 7671 final int viewHeight = getViewHeightWithTitle(); 7672 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7673 scale = mZoomManager.computeScaleWithLimits(scale); 7674 return !mZoomManager.willScaleTriggerZoom(scale) 7675 && contentToViewX(rect.left) >= mScrollX 7676 && contentToViewX(rect.right) <= mScrollX + viewWidth 7677 && contentToViewY(rect.top) >= mScrollY 7678 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7679 } 7680 7681 /* 7682 * Maximize and center the rectangle, specified in the document coordinate 7683 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7684 * animated scroll to center it. If the zoom needs to be changed, find the 7685 * zoom center and do a smooth zoom transition. The rect is in document 7686 * coordinates 7687 */ 7688 void centerFitRect(Rect rect) { 7689 final int rectWidth = rect.width(); 7690 final int rectHeight = rect.height(); 7691 final int viewWidth = getViewWidth(); 7692 final int viewHeight = getViewHeightWithTitle(); 7693 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7694 / rectHeight); 7695 scale = mZoomManager.computeScaleWithLimits(scale); 7696 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7697 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7698 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7699 true, 0); 7700 } else { 7701 float actualScale = mZoomManager.getScale(); 7702 float oldScreenX = rect.left * actualScale - mScrollX; 7703 float rectViewX = rect.left * scale; 7704 float rectViewWidth = rectWidth * scale; 7705 float newMaxWidth = mContentWidth * scale; 7706 float newScreenX = (viewWidth - rectViewWidth) / 2; 7707 // pin the newX to the WebView 7708 if (newScreenX > rectViewX) { 7709 newScreenX = rectViewX; 7710 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7711 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7712 } 7713 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7714 / (scale - actualScale); 7715 float oldScreenY = rect.top * actualScale + getTitleHeight() 7716 - mScrollY; 7717 float rectViewY = rect.top * scale + getTitleHeight(); 7718 float rectViewHeight = rectHeight * scale; 7719 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7720 float newScreenY = (viewHeight - rectViewHeight) / 2; 7721 // pin the newY to the WebView 7722 if (newScreenY > rectViewY) { 7723 newScreenY = rectViewY; 7724 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7725 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7726 } 7727 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7728 / (scale - actualScale); 7729 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7730 mZoomManager.startZoomAnimation(scale, false); 7731 } 7732 } 7733 7734 // Called by JNI to handle a touch on a node representing an email address, 7735 // address, or phone number 7736 private void overrideLoading(String url) { 7737 mCallbackProxy.uiOverrideUrlLoading(url); 7738 } 7739 7740 @Override 7741 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7742 // FIXME: If a subwindow is showing find, and the user touches the 7743 // background window, it can steal focus. 7744 if (mFindIsUp) return false; 7745 boolean result = false; 7746 if (inEditingMode()) { 7747 result = mWebTextView.requestFocus(direction, 7748 previouslyFocusedRect); 7749 } else { 7750 result = super.requestFocus(direction, previouslyFocusedRect); 7751 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7752 // For cases such as GMail, where we gain focus from a direction, 7753 // we want to move to the first available link. 7754 // FIXME: If there are no visible links, we may not want to 7755 int fakeKeyDirection = 0; 7756 switch(direction) { 7757 case View.FOCUS_UP: 7758 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7759 break; 7760 case View.FOCUS_DOWN: 7761 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7762 break; 7763 case View.FOCUS_LEFT: 7764 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7765 break; 7766 case View.FOCUS_RIGHT: 7767 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7768 break; 7769 default: 7770 return result; 7771 } 7772 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7773 navHandledKey(fakeKeyDirection, 1, true, 0); 7774 } 7775 } 7776 } 7777 return result; 7778 } 7779 7780 @Override 7781 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7782 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7783 7784 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7785 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7786 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7787 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7788 7789 int measuredHeight = heightSize; 7790 int measuredWidth = widthSize; 7791 7792 // Grab the content size from WebViewCore. 7793 int contentHeight = contentToViewDimension(mContentHeight); 7794 int contentWidth = contentToViewDimension(mContentWidth); 7795 7796// Log.d(LOGTAG, "------- measure " + heightMode); 7797 7798 if (heightMode != MeasureSpec.EXACTLY) { 7799 mHeightCanMeasure = true; 7800 measuredHeight = contentHeight; 7801 if (heightMode == MeasureSpec.AT_MOST) { 7802 // If we are larger than the AT_MOST height, then our height can 7803 // no longer be measured and we should scroll internally. 7804 if (measuredHeight > heightSize) { 7805 measuredHeight = heightSize; 7806 mHeightCanMeasure = false; 7807 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7808 } 7809 } 7810 } else { 7811 mHeightCanMeasure = false; 7812 } 7813 if (mNativeClass != 0) { 7814 nativeSetHeightCanMeasure(mHeightCanMeasure); 7815 } 7816 // For the width, always use the given size unless unspecified. 7817 if (widthMode == MeasureSpec.UNSPECIFIED) { 7818 mWidthCanMeasure = true; 7819 measuredWidth = contentWidth; 7820 } else { 7821 if (measuredWidth < contentWidth) { 7822 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7823 } 7824 mWidthCanMeasure = false; 7825 } 7826 7827 synchronized (this) { 7828 setMeasuredDimension(measuredWidth, measuredHeight); 7829 } 7830 } 7831 7832 @Override 7833 public boolean requestChildRectangleOnScreen(View child, 7834 Rect rect, 7835 boolean immediate) { 7836 if (mNativeClass == 0) { 7837 return false; 7838 } 7839 // don't scroll while in zoom animation. When it is done, we will adjust 7840 // the necessary components (e.g., WebTextView if it is in editing mode) 7841 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7842 return false; 7843 } 7844 7845 rect.offset(child.getLeft() - child.getScrollX(), 7846 child.getTop() - child.getScrollY()); 7847 7848 Rect content = new Rect(viewToContentX(mScrollX), 7849 viewToContentY(mScrollY), 7850 viewToContentX(mScrollX + getWidth() 7851 - getVerticalScrollbarWidth()), 7852 viewToContentY(mScrollY + getViewHeightWithTitle())); 7853 content = nativeSubtractLayers(content); 7854 int screenTop = contentToViewY(content.top); 7855 int screenBottom = contentToViewY(content.bottom); 7856 int height = screenBottom - screenTop; 7857 int scrollYDelta = 0; 7858 7859 if (rect.bottom > screenBottom) { 7860 int oneThirdOfScreenHeight = height / 3; 7861 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7862 // If the rectangle is too tall to fit in the bottom two thirds 7863 // of the screen, place it at the top. 7864 scrollYDelta = rect.top - screenTop; 7865 } else { 7866 // If the rectangle will still fit on screen, we want its 7867 // top to be in the top third of the screen. 7868 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7869 } 7870 } else if (rect.top < screenTop) { 7871 scrollYDelta = rect.top - screenTop; 7872 } 7873 7874 int screenLeft = contentToViewX(content.left); 7875 int screenRight = contentToViewX(content.right); 7876 int width = screenRight - screenLeft; 7877 int scrollXDelta = 0; 7878 7879 if (rect.right > screenRight && rect.left > screenLeft) { 7880 if (rect.width() > width) { 7881 scrollXDelta += (rect.left - screenLeft); 7882 } else { 7883 scrollXDelta += (rect.right - screenRight); 7884 } 7885 } else if (rect.left < screenLeft) { 7886 scrollXDelta -= (screenLeft - rect.left); 7887 } 7888 7889 if ((scrollYDelta | scrollXDelta) != 0) { 7890 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7891 } 7892 7893 return false; 7894 } 7895 7896 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7897 String replace, int newStart, int newEnd) { 7898 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7899 arg.mReplace = replace; 7900 arg.mNewStart = newStart; 7901 arg.mNewEnd = newEnd; 7902 mTextGeneration++; 7903 arg.mTextGeneration = mTextGeneration; 7904 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7905 } 7906 7907 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7908 // check if mWebViewCore has been destroyed 7909 if (mWebViewCore == null) { 7910 return; 7911 } 7912 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7913 arg.mEvent = event; 7914 arg.mCurrentText = currentText; 7915 // Increase our text generation number, and pass it to webcore thread 7916 mTextGeneration++; 7917 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7918 // WebKit's document state is not saved until about to leave the page. 7919 // To make sure the host application, like Browser, has the up to date 7920 // document state when it goes to background, we force to save the 7921 // document state. 7922 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7923 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7924 cursorData(), 1000); 7925 } 7926 7927 /** 7928 * @hide 7929 */ 7930 public synchronized WebViewCore getWebViewCore() { 7931 return mWebViewCore; 7932 } 7933 7934 /** 7935 * Used only by TouchEventQueue to store pending touch events. 7936 */ 7937 private static class QueuedTouch { 7938 long mSequence; 7939 MotionEvent mEvent; // Optional 7940 TouchEventData mTed; // Optional 7941 7942 QueuedTouch mNext; 7943 7944 public QueuedTouch set(TouchEventData ted) { 7945 mSequence = ted.mSequence; 7946 mTed = ted; 7947 mEvent = null; 7948 mNext = null; 7949 return this; 7950 } 7951 7952 public QueuedTouch set(MotionEvent ev, long sequence) { 7953 mEvent = MotionEvent.obtain(ev); 7954 mSequence = sequence; 7955 mTed = null; 7956 mNext = null; 7957 return this; 7958 } 7959 7960 public QueuedTouch add(QueuedTouch other) { 7961 if (other.mSequence < mSequence) { 7962 other.mNext = this; 7963 return other; 7964 } 7965 7966 QueuedTouch insertAt = this; 7967 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7968 insertAt = insertAt.mNext; 7969 } 7970 other.mNext = insertAt.mNext; 7971 insertAt.mNext = other; 7972 return this; 7973 } 7974 } 7975 7976 /** 7977 * WebView handles touch events asynchronously since some events must be passed to WebKit 7978 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7979 * of which path they take to ensure that no events are ever processed out of order 7980 * by WebView. 7981 */ 7982 private class TouchEventQueue { 7983 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7984 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7985 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7986 7987 // Events waiting to be processed. 7988 private QueuedTouch mTouchEventQueue; 7989 7990 // Known events that are waiting on a response before being enqueued. 7991 private QueuedTouch mPreQueue; 7992 7993 // Pool of QueuedTouch objects saved for later use. 7994 private QueuedTouch mQueuedTouchRecycleBin; 7995 private int mQueuedTouchRecycleCount; 7996 7997 private long mLastEventTime = Long.MAX_VALUE; 7998 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7999 8000 // milliseconds until we abandon hope of getting all of a previous gesture 8001 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 8002 8003 private QueuedTouch obtainQueuedTouch() { 8004 if (mQueuedTouchRecycleBin != null) { 8005 QueuedTouch result = mQueuedTouchRecycleBin; 8006 mQueuedTouchRecycleBin = result.mNext; 8007 mQueuedTouchRecycleCount--; 8008 return result; 8009 } 8010 return new QueuedTouch(); 8011 } 8012 8013 /** 8014 * Allow events with any currently missing sequence numbers to be skipped in processing. 8015 */ 8016 public void ignoreCurrentlyMissingEvents() { 8017 mIgnoreUntilSequence = mNextTouchSequence; 8018 8019 // Run any events we have available and complete, pre-queued or otherwise. 8020 runQueuedAndPreQueuedEvents(); 8021 } 8022 8023 private void runQueuedAndPreQueuedEvents() { 8024 QueuedTouch qd = mPreQueue; 8025 boolean fromPreQueue = true; 8026 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8027 handleQueuedTouch(qd); 8028 QueuedTouch recycleMe = qd; 8029 if (fromPreQueue) { 8030 mPreQueue = qd.mNext; 8031 } else { 8032 mTouchEventQueue = qd.mNext; 8033 } 8034 recycleQueuedTouch(recycleMe); 8035 mLastHandledTouchSequence++; 8036 8037 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 8038 long nextQueued = mTouchEventQueue != null ? 8039 mTouchEventQueue.mSequence : Long.MAX_VALUE; 8040 fromPreQueue = nextPre < nextQueued; 8041 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 8042 } 8043 } 8044 8045 /** 8046 * Add a TouchEventData to the pre-queue. 8047 * 8048 * An event in the pre-queue is an event that we know about that 8049 * has been sent to webkit, but that we haven't received back and 8050 * enqueued into the normal touch queue yet. If webkit ever times 8051 * out and we need to ignore currently missing events, we'll run 8052 * events from the pre-queue to patch the holes. 8053 * 8054 * @param ted TouchEventData to pre-queue 8055 */ 8056 public void preQueueTouchEventData(TouchEventData ted) { 8057 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 8058 if (mPreQueue == null) { 8059 mPreQueue = newTouch; 8060 } else { 8061 QueuedTouch insertionPoint = mPreQueue; 8062 while (insertionPoint.mNext != null && 8063 insertionPoint.mNext.mSequence < newTouch.mSequence) { 8064 insertionPoint = insertionPoint.mNext; 8065 } 8066 newTouch.mNext = insertionPoint.mNext; 8067 insertionPoint.mNext = newTouch; 8068 } 8069 } 8070 8071 private void recycleQueuedTouch(QueuedTouch qd) { 8072 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 8073 qd.mNext = mQueuedTouchRecycleBin; 8074 mQueuedTouchRecycleBin = qd; 8075 mQueuedTouchRecycleCount++; 8076 } 8077 } 8078 8079 /** 8080 * Reset the touch event queue. This will dump any pending events 8081 * and reset the sequence numbering. 8082 */ 8083 public void reset() { 8084 mNextTouchSequence = Long.MIN_VALUE + 1; 8085 mLastHandledTouchSequence = Long.MIN_VALUE; 8086 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8087 while (mTouchEventQueue != null) { 8088 QueuedTouch recycleMe = mTouchEventQueue; 8089 mTouchEventQueue = mTouchEventQueue.mNext; 8090 recycleQueuedTouch(recycleMe); 8091 } 8092 while (mPreQueue != null) { 8093 QueuedTouch recycleMe = mPreQueue; 8094 mPreQueue = mPreQueue.mNext; 8095 recycleQueuedTouch(recycleMe); 8096 } 8097 } 8098 8099 /** 8100 * Return the next valid sequence number for tagging incoming touch events. 8101 * @return The next touch event sequence number 8102 */ 8103 public long nextTouchSequence() { 8104 return mNextTouchSequence++; 8105 } 8106 8107 /** 8108 * Enqueue a touch event in the form of TouchEventData. 8109 * The sequence number will be read from the mSequence field of the argument. 8110 * 8111 * If the touch event's sequence number is the next in line to be processed, it will 8112 * be handled before this method returns. Any subsequent events that have already 8113 * been queued will also be processed in their proper order. 8114 * 8115 * @param ted Touch data to be processed in order. 8116 * @return true if the event was processed before returning, false if it was just enqueued. 8117 */ 8118 public boolean enqueueTouchEvent(TouchEventData ted) { 8119 // Remove from the pre-queue if present 8120 QueuedTouch preQueue = mPreQueue; 8121 if (preQueue != null) { 8122 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 8123 // if it was present in the pre-queue, and removed from the pre-queue itself. 8124 if (preQueue.mSequence == ted.mSequence) { 8125 mPreQueue = preQueue.mNext; 8126 } else { 8127 QueuedTouch prev = preQueue; 8128 preQueue = null; 8129 while (prev.mNext != null) { 8130 if (prev.mNext.mSequence == ted.mSequence) { 8131 preQueue = prev.mNext; 8132 prev.mNext = preQueue.mNext; 8133 break; 8134 } else { 8135 prev = prev.mNext; 8136 } 8137 } 8138 } 8139 } 8140 8141 if (ted.mSequence < mLastHandledTouchSequence) { 8142 // Stale event and we already moved on; drop it. (Should not be common.) 8143 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8144 " received from webcore; ignoring"); 8145 return false; 8146 } 8147 8148 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8149 return false; 8150 } 8151 8152 // dropStaleGestures above might have fast-forwarded us to 8153 // an event we have already. 8154 runNextQueuedEvents(); 8155 8156 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8157 if (preQueue != null) { 8158 recycleQueuedTouch(preQueue); 8159 preQueue = null; 8160 } 8161 handleQueuedTouchEventData(ted); 8162 8163 mLastHandledTouchSequence++; 8164 8165 // Do we have any more? Run them if so. 8166 runNextQueuedEvents(); 8167 } else { 8168 // Reuse the pre-queued object if we had it. 8169 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8170 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8171 } 8172 return true; 8173 } 8174 8175 /** 8176 * Enqueue a touch event in the form of a MotionEvent from the framework. 8177 * 8178 * If the touch event's sequence number is the next in line to be processed, it will 8179 * be handled before this method returns. Any subsequent events that have already 8180 * been queued will also be processed in their proper order. 8181 * 8182 * @param ev MotionEvent to be processed in order 8183 */ 8184 public void enqueueTouchEvent(MotionEvent ev) { 8185 final long sequence = nextTouchSequence(); 8186 8187 if (dropStaleGestures(ev, sequence)) { 8188 return; 8189 } 8190 8191 // dropStaleGestures above might have fast-forwarded us to 8192 // an event we have already. 8193 runNextQueuedEvents(); 8194 8195 if (mLastHandledTouchSequence + 1 == sequence) { 8196 handleQueuedMotionEvent(ev); 8197 8198 mLastHandledTouchSequence++; 8199 8200 // Do we have any more? Run them if so. 8201 runNextQueuedEvents(); 8202 } else { 8203 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8204 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8205 } 8206 } 8207 8208 private void runNextQueuedEvents() { 8209 QueuedTouch qd = mTouchEventQueue; 8210 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8211 handleQueuedTouch(qd); 8212 QueuedTouch recycleMe = qd; 8213 qd = qd.mNext; 8214 recycleQueuedTouch(recycleMe); 8215 mLastHandledTouchSequence++; 8216 } 8217 mTouchEventQueue = qd; 8218 } 8219 8220 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8221 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8222 // This is to make sure that we don't attempt to process a tap 8223 // or long press when webkit takes too long to get back to us. 8224 // The movement will be properly confirmed when we process the 8225 // enqueued event later. 8226 final int dx = Math.round(ev.getX()) - mLastTouchX; 8227 final int dy = Math.round(ev.getY()) - mLastTouchY; 8228 if (dx * dx + dy * dy > mTouchSlopSquare) { 8229 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8230 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8231 } 8232 } 8233 8234 if (mTouchEventQueue == null) { 8235 return sequence <= mLastHandledTouchSequence; 8236 } 8237 8238 // If we have a new down event and it's been a while since the last event 8239 // we saw, catch up as best we can and keep going. 8240 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8241 long eventTime = ev.getEventTime(); 8242 long lastHandledEventTime = mLastEventTime; 8243 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8244 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8245 "Catching up."); 8246 runQueuedAndPreQueuedEvents(); 8247 8248 // Drop leftovers that we truly don't have. 8249 QueuedTouch qd = mTouchEventQueue; 8250 while (qd != null && qd.mSequence < sequence) { 8251 QueuedTouch recycleMe = qd; 8252 qd = qd.mNext; 8253 recycleQueuedTouch(recycleMe); 8254 } 8255 mTouchEventQueue = qd; 8256 mLastHandledTouchSequence = sequence - 1; 8257 } 8258 } 8259 8260 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8261 QueuedTouch qd = mTouchEventQueue; 8262 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8263 QueuedTouch recycleMe = qd; 8264 qd = qd.mNext; 8265 recycleQueuedTouch(recycleMe); 8266 } 8267 mTouchEventQueue = qd; 8268 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8269 } 8270 8271 if (mPreQueue != null) { 8272 // Drop stale prequeued events 8273 QueuedTouch qd = mPreQueue; 8274 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8275 QueuedTouch recycleMe = qd; 8276 qd = qd.mNext; 8277 recycleQueuedTouch(recycleMe); 8278 } 8279 mPreQueue = qd; 8280 } 8281 8282 return sequence <= mLastHandledTouchSequence; 8283 } 8284 8285 private void handleQueuedTouch(QueuedTouch qt) { 8286 if (qt.mTed != null) { 8287 handleQueuedTouchEventData(qt.mTed); 8288 } else { 8289 handleQueuedMotionEvent(qt.mEvent); 8290 qt.mEvent.recycle(); 8291 } 8292 } 8293 8294 private void handleQueuedMotionEvent(MotionEvent ev) { 8295 mLastEventTime = ev.getEventTime(); 8296 int action = ev.getActionMasked(); 8297 if (ev.getPointerCount() > 1) { // Multi-touch 8298 handleMultiTouchInWebView(ev); 8299 } else { 8300 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8301 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8302 // ScaleGestureDetector needs a consistent event stream to operate properly. 8303 // It won't take any action with fewer than two pointers, but it needs to 8304 // update internal bookkeeping state. 8305 detector.onTouchEvent(ev); 8306 } 8307 8308 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8309 } 8310 } 8311 8312 private void handleQueuedTouchEventData(TouchEventData ted) { 8313 if (ted.mMotionEvent != null) { 8314 mLastEventTime = ted.mMotionEvent.getEventTime(); 8315 } 8316 if (!ted.mReprocess) { 8317 if (ted.mAction == MotionEvent.ACTION_DOWN 8318 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8319 // if prevent default is called from WebCore, UI 8320 // will not handle the rest of the touch events any 8321 // more. 8322 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8323 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8324 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8325 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8326 // the return for the first ACTION_MOVE will decide 8327 // whether UI will handle touch or not. Currently no 8328 // support for alternating prevent default 8329 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8330 : PREVENT_DEFAULT_NO; 8331 } 8332 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8333 mTouchHighlightRegion.setEmpty(); 8334 } 8335 } else { 8336 if (ted.mPoints.length > 1) { // multi-touch 8337 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8338 mPreventDefault = PREVENT_DEFAULT_NO; 8339 handleMultiTouchInWebView(ted.mMotionEvent); 8340 } else { 8341 mPreventDefault = PREVENT_DEFAULT_YES; 8342 } 8343 return; 8344 } 8345 8346 // prevent default is not called in WebCore, so the 8347 // message needs to be reprocessed in UI 8348 if (!ted.mNativeResult) { 8349 // Following is for single touch. 8350 switch (ted.mAction) { 8351 case MotionEvent.ACTION_DOWN: 8352 mLastDeferTouchX = ted.mPointsInView[0].x; 8353 mLastDeferTouchY = ted.mPointsInView[0].y; 8354 mDeferTouchMode = TOUCH_INIT_MODE; 8355 break; 8356 case MotionEvent.ACTION_MOVE: { 8357 // no snapping in defer process 8358 int x = ted.mPointsInView[0].x; 8359 int y = ted.mPointsInView[0].y; 8360 8361 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8362 mDeferTouchMode = TOUCH_DRAG_MODE; 8363 mLastDeferTouchX = x; 8364 mLastDeferTouchY = y; 8365 startScrollingLayer(x, y); 8366 startDrag(); 8367 } 8368 int deltaX = pinLocX((int) (mScrollX 8369 + mLastDeferTouchX - x)) 8370 - mScrollX; 8371 int deltaY = pinLocY((int) (mScrollY 8372 + mLastDeferTouchY - y)) 8373 - mScrollY; 8374 doDrag(deltaX, deltaY); 8375 if (deltaX != 0) mLastDeferTouchX = x; 8376 if (deltaY != 0) mLastDeferTouchY = y; 8377 break; 8378 } 8379 case MotionEvent.ACTION_UP: 8380 case MotionEvent.ACTION_CANCEL: 8381 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8382 // no fling in defer process 8383 mScroller.springBack(mScrollX, mScrollY, 0, 8384 computeMaxScrollX(), 0, 8385 computeMaxScrollY()); 8386 invalidate(); 8387 WebViewCore.resumePriority(); 8388 WebViewCore.resumeUpdatePicture(mWebViewCore); 8389 } 8390 mDeferTouchMode = TOUCH_DONE_MODE; 8391 break; 8392 case WebViewCore.ACTION_DOUBLETAP: 8393 // doDoubleTap() needs mLastTouchX/Y as anchor 8394 mLastDeferTouchX = ted.mPointsInView[0].x; 8395 mLastDeferTouchY = ted.mPointsInView[0].y; 8396 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8397 mDeferTouchMode = TOUCH_DONE_MODE; 8398 break; 8399 case WebViewCore.ACTION_LONGPRESS: 8400 HitTestResult hitTest = getHitTestResult(); 8401 if (hitTest != null && hitTest.mType 8402 != HitTestResult.UNKNOWN_TYPE) { 8403 performLongClick(); 8404 } 8405 mDeferTouchMode = TOUCH_DONE_MODE; 8406 break; 8407 } 8408 } 8409 } 8410 } 8411 } 8412 8413 //------------------------------------------------------------------------- 8414 // Methods can be called from a separate thread, like WebViewCore 8415 // If it needs to call the View system, it has to send message. 8416 //------------------------------------------------------------------------- 8417 8418 /** 8419 * General handler to receive message coming from webkit thread 8420 */ 8421 class PrivateHandler extends Handler { 8422 @Override 8423 public void handleMessage(Message msg) { 8424 // exclude INVAL_RECT_MSG_ID since it is frequently output 8425 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8426 if (msg.what >= FIRST_PRIVATE_MSG_ID 8427 && msg.what <= LAST_PRIVATE_MSG_ID) { 8428 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8429 - FIRST_PRIVATE_MSG_ID]); 8430 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8431 && msg.what <= LAST_PACKAGE_MSG_ID) { 8432 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8433 - FIRST_PACKAGE_MSG_ID]); 8434 } else { 8435 Log.v(LOGTAG, Integer.toString(msg.what)); 8436 } 8437 } 8438 if (mWebViewCore == null) { 8439 // after WebView's destroy() is called, skip handling messages. 8440 return; 8441 } 8442 if (mBlockWebkitViewMessages 8443 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8444 // Blocking messages from webkit 8445 return; 8446 } 8447 switch (msg.what) { 8448 case REMEMBER_PASSWORD: { 8449 mDatabase.setUsernamePassword( 8450 msg.getData().getString("host"), 8451 msg.getData().getString("username"), 8452 msg.getData().getString("password")); 8453 ((Message) msg.obj).sendToTarget(); 8454 break; 8455 } 8456 case NEVER_REMEMBER_PASSWORD: { 8457 mDatabase.setUsernamePassword( 8458 msg.getData().getString("host"), null, null); 8459 ((Message) msg.obj).sendToTarget(); 8460 break; 8461 } 8462 case PREVENT_DEFAULT_TIMEOUT: { 8463 // if timeout happens, cancel it so that it won't block UI 8464 // to continue handling touch events 8465 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8466 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8467 || (msg.arg1 == MotionEvent.ACTION_MOVE 8468 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8469 cancelWebCoreTouchEvent( 8470 viewToContentX(mLastTouchX + mScrollX), 8471 viewToContentY(mLastTouchY + mScrollY), 8472 true); 8473 } 8474 break; 8475 } 8476 case SCROLL_SELECT_TEXT: { 8477 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8478 mSentAutoScrollMessage = false; 8479 break; 8480 } 8481 if (mCurrentScrollingLayerId == 0) { 8482 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8483 } else { 8484 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8485 mScrollingLayerRect.top + mAutoScrollY); 8486 } 8487 sendEmptyMessageDelayed( 8488 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8489 break; 8490 } 8491 case UPDATE_SELECTION: { 8492 if (mTouchMode == TOUCH_INIT_MODE 8493 || mTouchMode == TOUCH_SHORTPRESS_MODE 8494 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8495 updateSelection(); 8496 } 8497 break; 8498 } 8499 case SWITCH_TO_SHORTPRESS: { 8500 if (mTouchMode == TOUCH_INIT_MODE) { 8501 if (!sDisableNavcache 8502 && mPreventDefault != PREVENT_DEFAULT_YES) { 8503 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8504 updateSelection(); 8505 } else { 8506 // set to TOUCH_SHORTPRESS_MODE so that it won't 8507 // trigger double tap any more 8508 mTouchMode = TOUCH_SHORTPRESS_MODE; 8509 } 8510 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8511 mTouchMode = TOUCH_DONE_MODE; 8512 } 8513 break; 8514 } 8515 case SWITCH_TO_LONGPRESS: { 8516 if (sDisableNavcache) { 8517 removeTouchHighlight(); 8518 } 8519 if (inFullScreenMode() || mDeferTouchProcess) { 8520 TouchEventData ted = new TouchEventData(); 8521 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8522 ted.mIds = new int[1]; 8523 ted.mIds[0] = 0; 8524 ted.mPoints = new Point[1]; 8525 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8526 viewToContentY(mLastTouchY + mScrollY)); 8527 ted.mPointsInView = new Point[1]; 8528 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8529 // metaState for long press is tricky. Should it be the 8530 // state when the press started or when the press was 8531 // released? Or some intermediary key state? For 8532 // simplicity for now, we don't set it. 8533 ted.mMetaState = 0; 8534 ted.mReprocess = mDeferTouchProcess; 8535 ted.mNativeLayer = nativeScrollableLayer( 8536 ted.mPoints[0].x, ted.mPoints[0].y, 8537 ted.mNativeLayerRect, null); 8538 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8539 mTouchEventQueue.preQueueTouchEventData(ted); 8540 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8541 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8542 mTouchMode = TOUCH_DONE_MODE; 8543 performLongClick(); 8544 } 8545 break; 8546 } 8547 case RELEASE_SINGLE_TAP: { 8548 doShortPress(); 8549 break; 8550 } 8551 case SCROLL_TO_MSG_ID: { 8552 // arg1 = animate, arg2 = onlyIfImeIsShowing 8553 // obj = Point(x, y) 8554 if (msg.arg2 == 1) { 8555 // This scroll is intended to bring the textfield into 8556 // view, but is only necessary if the IME is showing 8557 InputMethodManager imm = InputMethodManager.peekInstance(); 8558 if (imm == null || !imm.isAcceptingText() 8559 || (!imm.isActive(WebView.this) && (!inEditingMode() 8560 || !imm.isActive(mWebTextView)))) { 8561 break; 8562 } 8563 } 8564 final Point p = (Point) msg.obj; 8565 if (msg.arg1 == 1) { 8566 spawnContentScrollTo(p.x, p.y); 8567 } else { 8568 setContentScrollTo(p.x, p.y); 8569 } 8570 break; 8571 } 8572 case UPDATE_ZOOM_RANGE: { 8573 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8574 // mScrollX contains the new minPrefWidth 8575 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8576 break; 8577 } 8578 case UPDATE_ZOOM_DENSITY: { 8579 final float density = (Float) msg.obj; 8580 mZoomManager.updateDefaultZoomDensity(density); 8581 break; 8582 } 8583 case REPLACE_BASE_CONTENT: { 8584 nativeReplaceBaseContent(msg.arg1); 8585 break; 8586 } 8587 case NEW_PICTURE_MSG_ID: { 8588 // called for new content 8589 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8590 setNewPicture(draw, true); 8591 break; 8592 } 8593 case WEBCORE_INITIALIZED_MSG_ID: 8594 // nativeCreate sets mNativeClass to a non-zero value 8595 String drawableDir = BrowserFrame.getRawResFilename( 8596 BrowserFrame.DRAWABLEDIR, mContext); 8597 WindowManager windowManager = 8598 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8599 Display display = windowManager.getDefaultDisplay(); 8600 nativeCreate(msg.arg1, drawableDir, 8601 ActivityManager.isHighEndGfx(display)); 8602 if (mDelaySetPicture != null) { 8603 setNewPicture(mDelaySetPicture, true); 8604 mDelaySetPicture = null; 8605 } 8606 if (mIsPaused) { 8607 nativeSetPauseDrawing(mNativeClass, true); 8608 } 8609 break; 8610 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8611 // Make sure that the textfield is currently focused 8612 // and representing the same node as the pointer. 8613 if (inEditingMode() && 8614 mWebTextView.isSameTextField(msg.arg1)) { 8615 if (msg.arg2 == mTextGeneration) { 8616 String text = (String) msg.obj; 8617 if (null == text) { 8618 text = ""; 8619 } 8620 mWebTextView.setTextAndKeepSelection(text); 8621 } 8622 } 8623 break; 8624 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8625 displaySoftKeyboard(true); 8626 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8627 case UPDATE_TEXT_SELECTION_MSG_ID: 8628 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8629 (WebViewCore.TextSelectionData) msg.obj); 8630 break; 8631 case FORM_DID_BLUR: 8632 if (inEditingMode() 8633 && mWebTextView.isSameTextField(msg.arg1)) { 8634 hideSoftKeyboard(); 8635 } 8636 break; 8637 case RETURN_LABEL: 8638 if (inEditingMode() 8639 && mWebTextView.isSameTextField(msg.arg1)) { 8640 mWebTextView.setHint((String) msg.obj); 8641 InputMethodManager imm 8642 = InputMethodManager.peekInstance(); 8643 // The hint is propagated to the IME in 8644 // onCreateInputConnection. If the IME is already 8645 // active, restart it so that its hint text is updated. 8646 if (imm != null && imm.isActive(mWebTextView)) { 8647 imm.restartInput(mWebTextView); 8648 } 8649 } 8650 break; 8651 case UNHANDLED_NAV_KEY: 8652 navHandledKey(msg.arg1, 1, false, 0); 8653 break; 8654 case UPDATE_TEXT_ENTRY_MSG_ID: 8655 // this is sent after finishing resize in WebViewCore. Make 8656 // sure the text edit box is still on the screen. 8657 if (inEditingMode() && nativeCursorIsTextInput()) { 8658 updateWebTextViewPosition(); 8659 } 8660 break; 8661 case CLEAR_TEXT_ENTRY: 8662 clearTextEntry(); 8663 break; 8664 case INVAL_RECT_MSG_ID: { 8665 Rect r = (Rect)msg.obj; 8666 if (r == null) { 8667 invalidate(); 8668 } else { 8669 // we need to scale r from content into view coords, 8670 // which viewInvalidate() does for us 8671 viewInvalidate(r.left, r.top, r.right, r.bottom); 8672 } 8673 break; 8674 } 8675 case REQUEST_FORM_DATA: 8676 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8677 if (mWebTextView.isSameTextField(msg.arg1)) { 8678 mWebTextView.setAdapterCustom(adapter); 8679 } 8680 break; 8681 8682 case LONG_PRESS_CENTER: 8683 // as this is shared by keydown and trackballdown, reset all 8684 // the states 8685 mGotCenterDown = false; 8686 mTrackballDown = false; 8687 performLongClick(); 8688 break; 8689 8690 case WEBCORE_NEED_TOUCH_EVENTS: 8691 mForwardTouchEvents = (msg.arg1 != 0); 8692 break; 8693 8694 case PREVENT_TOUCH_ID: 8695 if (inFullScreenMode()) { 8696 break; 8697 } 8698 TouchEventData ted = (TouchEventData) msg.obj; 8699 8700 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8701 // WebCore is responding to us; remove pending timeout. 8702 // It will be re-posted when needed. 8703 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8704 } 8705 break; 8706 8707 case REQUEST_KEYBOARD: 8708 if (msg.arg1 == 0) { 8709 hideSoftKeyboard(); 8710 } else { 8711 displaySoftKeyboard(false); 8712 } 8713 break; 8714 8715 case FIND_AGAIN: 8716 // Ignore if find has been dismissed. 8717 if (mFindIsUp && mFindCallback != null) { 8718 mFindCallback.findAll(); 8719 } 8720 break; 8721 8722 case DRAG_HELD_MOTIONLESS: 8723 mHeldMotionless = MOTIONLESS_TRUE; 8724 invalidate(); 8725 // fall through to keep scrollbars awake 8726 8727 case AWAKEN_SCROLL_BARS: 8728 if (mTouchMode == TOUCH_DRAG_MODE 8729 && mHeldMotionless == MOTIONLESS_TRUE) { 8730 awakenScrollBars(ViewConfiguration 8731 .getScrollDefaultDelay(), false); 8732 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8733 .obtainMessage(AWAKEN_SCROLL_BARS), 8734 ViewConfiguration.getScrollDefaultDelay()); 8735 } 8736 break; 8737 8738 case DO_MOTION_UP: 8739 doMotionUp(msg.arg1, msg.arg2); 8740 break; 8741 8742 case SCREEN_ON: 8743 setKeepScreenOn(msg.arg1 == 1); 8744 break; 8745 8746 case ENTER_FULLSCREEN_VIDEO: 8747 int layerId = msg.arg1; 8748 8749 String url = (String) msg.obj; 8750 if (mHTML5VideoViewProxy != null) { 8751 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8752 } 8753 break; 8754 8755 case SHOW_FULLSCREEN: { 8756 View view = (View) msg.obj; 8757 int orientation = msg.arg1; 8758 int npp = msg.arg2; 8759 8760 if (inFullScreenMode()) { 8761 Log.w(LOGTAG, "Should not have another full screen."); 8762 dismissFullScreenMode(); 8763 } 8764 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8765 mFullScreenHolder.setContentView(view); 8766 mFullScreenHolder.show(); 8767 invalidate(); 8768 8769 break; 8770 } 8771 case HIDE_FULLSCREEN: 8772 dismissFullScreenMode(); 8773 break; 8774 8775 case DOM_FOCUS_CHANGED: 8776 if (inEditingMode()) { 8777 nativeClearCursor(); 8778 rebuildWebTextView(); 8779 } 8780 break; 8781 8782 case SHOW_RECT_MSG_ID: { 8783 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8784 int x = mScrollX; 8785 int left = contentToViewX(data.mLeft); 8786 int width = contentToViewDimension(data.mWidth); 8787 int maxWidth = contentToViewDimension(data.mContentWidth); 8788 int viewWidth = getViewWidth(); 8789 if (width < viewWidth) { 8790 // center align 8791 x += left + width / 2 - mScrollX - viewWidth / 2; 8792 } else { 8793 x += (int) (left + data.mXPercentInDoc * width 8794 - mScrollX - data.mXPercentInView * viewWidth); 8795 } 8796 if (DebugFlags.WEB_VIEW) { 8797 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8798 width + ",maxWidth=" + maxWidth + 8799 ",viewWidth=" + viewWidth + ",x=" 8800 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8801 ",xPercentInView=" + data.mXPercentInView+ ")"); 8802 } 8803 // use the passing content width to cap x as the current 8804 // mContentWidth may not be updated yet 8805 x = Math.max(0, 8806 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8807 int top = contentToViewY(data.mTop); 8808 int height = contentToViewDimension(data.mHeight); 8809 int maxHeight = contentToViewDimension(data.mContentHeight); 8810 int viewHeight = getViewHeight(); 8811 int y = (int) (top + data.mYPercentInDoc * height - 8812 data.mYPercentInView * viewHeight); 8813 if (DebugFlags.WEB_VIEW) { 8814 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8815 height + ",maxHeight=" + maxHeight + 8816 ",viewHeight=" + viewHeight + ",y=" 8817 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8818 ",yPercentInView=" + data.mYPercentInView+ ")"); 8819 } 8820 // use the passing content height to cap y as the current 8821 // mContentHeight may not be updated yet 8822 y = Math.max(0, 8823 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8824 // We need to take into account the visible title height 8825 // when scrolling since y is an absolute view position. 8826 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8827 scrollTo(x, y); 8828 } 8829 break; 8830 8831 case CENTER_FIT_RECT: 8832 centerFitRect((Rect)msg.obj); 8833 break; 8834 8835 case SET_SCROLLBAR_MODES: 8836 mHorizontalScrollBarMode = msg.arg1; 8837 mVerticalScrollBarMode = msg.arg2; 8838 break; 8839 8840 case SELECTION_STRING_CHANGED: 8841 if (mAccessibilityInjector != null) { 8842 String selectionString = (String) msg.obj; 8843 mAccessibilityInjector.onSelectionStringChange(selectionString); 8844 } 8845 break; 8846 8847 case HIT_TEST_RESULT: 8848 WebKitHitTest hit = (WebKitHitTest) msg.obj; 8849 setTouchHighlightRects(hit != null ? hit.mTouchRects : null); 8850 if (hit == null) { 8851 mInitialHitTestResult = null; 8852 } else { 8853 mInitialHitTestResult = new HitTestResult(); 8854 mInitialHitTestResult.mType = hit.mType; 8855 mInitialHitTestResult.mExtra = hit.mExtra; 8856 } 8857 break; 8858 8859 case SAVE_WEBARCHIVE_FINISHED: 8860 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8861 if (saveMessage.mCallback != null) { 8862 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8863 } 8864 break; 8865 8866 case SET_AUTOFILLABLE: 8867 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8868 if (mWebTextView != null) { 8869 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8870 rebuildWebTextView(); 8871 } 8872 break; 8873 8874 case AUTOFILL_COMPLETE: 8875 if (mWebTextView != null) { 8876 // Clear the WebTextView adapter when AutoFill finishes 8877 // so that the drop down gets cleared. 8878 mWebTextView.setAdapterCustom(null); 8879 } 8880 break; 8881 8882 case SELECT_AT: 8883 nativeSelectAt(msg.arg1, msg.arg2); 8884 break; 8885 8886 default: 8887 super.handleMessage(msg); 8888 break; 8889 } 8890 } 8891 } 8892 8893 private void setTouchHighlightRects(Rect[] rects) { 8894 invalidate(mTouchHighlightRegion.getBounds()); 8895 mTouchHighlightRegion.setEmpty(); 8896 if (rects != null) { 8897 for (Rect rect : rects) { 8898 Rect viewRect = contentToViewRect(rect); 8899 // some sites, like stories in nytimes.com, set 8900 // mouse event handler in the top div. It is not 8901 // user friendly to highlight the div if it covers 8902 // more than half of the screen. 8903 if (viewRect.width() < getWidth() >> 1 8904 || viewRect.height() < getHeight() >> 1) { 8905 mTouchHighlightRegion.union(viewRect); 8906 } else { 8907 Log.w(LOGTAG, "Skip the huge selection rect:" 8908 + viewRect); 8909 } 8910 } 8911 invalidate(mTouchHighlightRegion.getBounds()); 8912 } 8913 } 8914 8915 /** @hide Called by JNI when pages are swapped (only occurs with hardware 8916 * acceleration) */ 8917 protected void pageSwapCallback(boolean notifyAnimationStarted) { 8918 if (inEditingMode()) { 8919 didUpdateWebTextViewDimensions(ANYWHERE); 8920 } 8921 if (notifyAnimationStarted) { 8922 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 8923 } 8924 } 8925 8926 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 8927 if (mNativeClass == 0) { 8928 if (mDelaySetPicture != null) { 8929 throw new IllegalStateException("Tried to setNewPicture with" 8930 + " a delay picture already set! (memory leak)"); 8931 } 8932 // Not initialized yet, delay set 8933 mDelaySetPicture = draw; 8934 return; 8935 } 8936 WebViewCore.ViewState viewState = draw.mViewState; 8937 boolean isPictureAfterFirstLayout = viewState != null; 8938 8939 if (updateBaseLayer) { 8940 // Request a callback on pageSwap (to reposition the webtextview) 8941 boolean registerPageSwapCallback = 8942 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 8943 8944 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 8945 getSettings().getShowVisualIndicator(), 8946 isPictureAfterFirstLayout, registerPageSwapCallback); 8947 } 8948 final Point viewSize = draw.mViewSize; 8949 // We update the layout (i.e. request a layout from the 8950 // view system) if the last view size that we sent to 8951 // WebCore matches the view size of the picture we just 8952 // received in the fixed dimension. 8953 final boolean updateLayout = viewSize.x == mLastWidthSent 8954 && viewSize.y == mLastHeightSent; 8955 // Don't send scroll event for picture coming from webkit, 8956 // since the new picture may cause a scroll event to override 8957 // the saved history scroll position. 8958 mSendScrollEvent = false; 8959 recordNewContentSize(draw.mContentSize.x, 8960 draw.mContentSize.y, updateLayout); 8961 if (isPictureAfterFirstLayout) { 8962 // Reset the last sent data here since dealing with new page. 8963 mLastWidthSent = 0; 8964 mZoomManager.onFirstLayout(draw); 8965 int scrollX = viewState.mShouldStartScrolledRight 8966 ? getContentWidth() : viewState.mScrollX; 8967 int scrollY = viewState.mScrollY; 8968 setContentScrollTo(scrollX, scrollY); 8969 if (!mDrawHistory) { 8970 // As we are on a new page, remove the WebTextView. This 8971 // is necessary for page loads driven by webkit, and in 8972 // particular when the user was on a password field, so 8973 // the WebTextView was visible. 8974 clearTextEntry(); 8975 } 8976 } 8977 mSendScrollEvent = true; 8978 8979 if (DebugFlags.WEB_VIEW) { 8980 Rect b = draw.mInvalRegion.getBounds(); 8981 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 8982 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 8983 } 8984 invalidateContentRect(draw.mInvalRegion.getBounds()); 8985 8986 if (mPictureListener != null) { 8987 mPictureListener.onNewPicture(WebView.this, capturePicture()); 8988 } 8989 8990 // update the zoom information based on the new picture 8991 mZoomManager.onNewPicture(draw); 8992 8993 if (draw.mFocusSizeChanged && inEditingMode()) { 8994 mFocusSizeChanged = true; 8995 } 8996 if (isPictureAfterFirstLayout) { 8997 mViewManager.postReadyToDrawAll(); 8998 } 8999 } 9000 9001 /** 9002 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 9003 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 9004 */ 9005 private void updateTextSelectionFromMessage(int nodePointer, 9006 int textGeneration, WebViewCore.TextSelectionData data) { 9007 if (inEditingMode() 9008 && mWebTextView.isSameTextField(nodePointer) 9009 && textGeneration == mTextGeneration) { 9010 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 9011 } 9012 } 9013 9014 // Class used to use a dropdown for a <select> element 9015 private class InvokeListBox implements Runnable { 9016 // Whether the listbox allows multiple selection. 9017 private boolean mMultiple; 9018 // Passed in to a list with multiple selection to tell 9019 // which items are selected. 9020 private int[] mSelectedArray; 9021 // Passed in to a list with single selection to tell 9022 // where the initial selection is. 9023 private int mSelection; 9024 9025 private Container[] mContainers; 9026 9027 // Need these to provide stable ids to my ArrayAdapter, 9028 // which normally does not have stable ids. (Bug 1250098) 9029 private class Container extends Object { 9030 /** 9031 * Possible values for mEnabled. Keep in sync with OptionStatus in 9032 * WebViewCore.cpp 9033 */ 9034 final static int OPTGROUP = -1; 9035 final static int OPTION_DISABLED = 0; 9036 final static int OPTION_ENABLED = 1; 9037 9038 String mString; 9039 int mEnabled; 9040 int mId; 9041 9042 @Override 9043 public String toString() { 9044 return mString; 9045 } 9046 } 9047 9048 /** 9049 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 9050 * and allow filtering. 9051 */ 9052 private class MyArrayListAdapter extends ArrayAdapter<Container> { 9053 public MyArrayListAdapter() { 9054 super(mContext, 9055 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 9056 com.android.internal.R.layout.webview_select_singlechoice, 9057 mContainers); 9058 } 9059 9060 @Override 9061 public View getView(int position, View convertView, 9062 ViewGroup parent) { 9063 // Always pass in null so that we will get a new CheckedTextView 9064 // Otherwise, an item which was previously used as an <optgroup> 9065 // element (i.e. has no check), could get used as an <option> 9066 // element, which needs a checkbox/radio, but it would not have 9067 // one. 9068 convertView = super.getView(position, null, parent); 9069 Container c = item(position); 9070 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 9071 // ListView does not draw dividers between disabled and 9072 // enabled elements. Use a LinearLayout to provide dividers 9073 LinearLayout layout = new LinearLayout(mContext); 9074 layout.setOrientation(LinearLayout.VERTICAL); 9075 if (position > 0) { 9076 View dividerTop = new View(mContext); 9077 dividerTop.setBackgroundResource( 9078 android.R.drawable.divider_horizontal_bright); 9079 layout.addView(dividerTop); 9080 } 9081 9082 if (Container.OPTGROUP == c.mEnabled) { 9083 // Currently select_dialog_multichoice uses CheckedTextViews. 9084 // If that changes, the class cast will no longer be valid. 9085 if (mMultiple) { 9086 Assert.assertTrue(convertView instanceof CheckedTextView); 9087 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 9088 } 9089 } else { 9090 // c.mEnabled == Container.OPTION_DISABLED 9091 // Draw the disabled element in a disabled state. 9092 convertView.setEnabled(false); 9093 } 9094 9095 layout.addView(convertView); 9096 if (position < getCount() - 1) { 9097 View dividerBottom = new View(mContext); 9098 dividerBottom.setBackgroundResource( 9099 android.R.drawable.divider_horizontal_bright); 9100 layout.addView(dividerBottom); 9101 } 9102 return layout; 9103 } 9104 return convertView; 9105 } 9106 9107 @Override 9108 public boolean hasStableIds() { 9109 // AdapterView's onChanged method uses this to determine whether 9110 // to restore the old state. Return false so that the old (out 9111 // of date) state does not replace the new, valid state. 9112 return false; 9113 } 9114 9115 private Container item(int position) { 9116 if (position < 0 || position >= getCount()) { 9117 return null; 9118 } 9119 return getItem(position); 9120 } 9121 9122 @Override 9123 public long getItemId(int position) { 9124 Container item = item(position); 9125 if (item == null) { 9126 return -1; 9127 } 9128 return item.mId; 9129 } 9130 9131 @Override 9132 public boolean areAllItemsEnabled() { 9133 return false; 9134 } 9135 9136 @Override 9137 public boolean isEnabled(int position) { 9138 Container item = item(position); 9139 if (item == null) { 9140 return false; 9141 } 9142 return Container.OPTION_ENABLED == item.mEnabled; 9143 } 9144 } 9145 9146 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 9147 mMultiple = true; 9148 mSelectedArray = selected; 9149 9150 int length = array.length; 9151 mContainers = new Container[length]; 9152 for (int i = 0; i < length; i++) { 9153 mContainers[i] = new Container(); 9154 mContainers[i].mString = array[i]; 9155 mContainers[i].mEnabled = enabled[i]; 9156 mContainers[i].mId = i; 9157 } 9158 } 9159 9160 private InvokeListBox(String[] array, int[] enabled, int selection) { 9161 mSelection = selection; 9162 mMultiple = false; 9163 9164 int length = array.length; 9165 mContainers = new Container[length]; 9166 for (int i = 0; i < length; i++) { 9167 mContainers[i] = new Container(); 9168 mContainers[i].mString = array[i]; 9169 mContainers[i].mEnabled = enabled[i]; 9170 mContainers[i].mId = i; 9171 } 9172 } 9173 9174 /* 9175 * Whenever the data set changes due to filtering, this class ensures 9176 * that the checked item remains checked. 9177 */ 9178 private class SingleDataSetObserver extends DataSetObserver { 9179 private long mCheckedId; 9180 private ListView mListView; 9181 private Adapter mAdapter; 9182 9183 /* 9184 * Create a new observer. 9185 * @param id The ID of the item to keep checked. 9186 * @param l ListView for getting and clearing the checked states 9187 * @param a Adapter for getting the IDs 9188 */ 9189 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9190 mCheckedId = id; 9191 mListView = l; 9192 mAdapter = a; 9193 } 9194 9195 @Override 9196 public void onChanged() { 9197 // The filter may have changed which item is checked. Find the 9198 // item that the ListView thinks is checked. 9199 int position = mListView.getCheckedItemPosition(); 9200 long id = mAdapter.getItemId(position); 9201 if (mCheckedId != id) { 9202 // Clear the ListView's idea of the checked item, since 9203 // it is incorrect 9204 mListView.clearChoices(); 9205 // Search for mCheckedId. If it is in the filtered list, 9206 // mark it as checked 9207 int count = mAdapter.getCount(); 9208 for (int i = 0; i < count; i++) { 9209 if (mAdapter.getItemId(i) == mCheckedId) { 9210 mListView.setItemChecked(i, true); 9211 break; 9212 } 9213 } 9214 } 9215 } 9216 } 9217 9218 @Override 9219 public void run() { 9220 final ListView listView = (ListView) LayoutInflater.from(mContext) 9221 .inflate(com.android.internal.R.layout.select_dialog, null); 9222 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9223 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9224 .setView(listView).setCancelable(true) 9225 .setInverseBackgroundForced(true); 9226 9227 if (mMultiple) { 9228 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9229 @Override 9230 public void onClick(DialogInterface dialog, int which) { 9231 mWebViewCore.sendMessage( 9232 EventHub.LISTBOX_CHOICES, 9233 adapter.getCount(), 0, 9234 listView.getCheckedItemPositions()); 9235 }}); 9236 b.setNegativeButton(android.R.string.cancel, 9237 new DialogInterface.OnClickListener() { 9238 @Override 9239 public void onClick(DialogInterface dialog, int which) { 9240 mWebViewCore.sendMessage( 9241 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9242 }}); 9243 } 9244 mListBoxDialog = b.create(); 9245 listView.setAdapter(adapter); 9246 listView.setFocusableInTouchMode(true); 9247 // There is a bug (1250103) where the checks in a ListView with 9248 // multiple items selected are associated with the positions, not 9249 // the ids, so the items do not properly retain their checks when 9250 // filtered. Do not allow filtering on multiple lists until 9251 // that bug is fixed. 9252 9253 listView.setTextFilterEnabled(!mMultiple); 9254 if (mMultiple) { 9255 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9256 int length = mSelectedArray.length; 9257 for (int i = 0; i < length; i++) { 9258 listView.setItemChecked(mSelectedArray[i], true); 9259 } 9260 } else { 9261 listView.setOnItemClickListener(new OnItemClickListener() { 9262 @Override 9263 public void onItemClick(AdapterView<?> parent, View v, 9264 int position, long id) { 9265 // Rather than sending the message right away, send it 9266 // after the page regains focus. 9267 mListBoxMessage = Message.obtain(null, 9268 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9269 mListBoxDialog.dismiss(); 9270 mListBoxDialog = null; 9271 } 9272 }); 9273 if (mSelection != -1) { 9274 listView.setSelection(mSelection); 9275 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9276 listView.setItemChecked(mSelection, true); 9277 DataSetObserver observer = new SingleDataSetObserver( 9278 adapter.getItemId(mSelection), listView, adapter); 9279 adapter.registerDataSetObserver(observer); 9280 } 9281 } 9282 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9283 @Override 9284 public void onCancel(DialogInterface dialog) { 9285 mWebViewCore.sendMessage( 9286 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9287 mListBoxDialog = null; 9288 } 9289 }); 9290 mListBoxDialog.show(); 9291 } 9292 } 9293 9294 private Message mListBoxMessage; 9295 9296 /* 9297 * Request a dropdown menu for a listbox with multiple selection. 9298 * 9299 * @param array Labels for the listbox. 9300 * @param enabledArray State for each element in the list. See static 9301 * integers in Container class. 9302 * @param selectedArray Which positions are initally selected. 9303 */ 9304 void requestListBox(String[] array, int[] enabledArray, int[] 9305 selectedArray) { 9306 mPrivateHandler.post( 9307 new InvokeListBox(array, enabledArray, selectedArray)); 9308 } 9309 9310 /* 9311 * Request a dropdown menu for a listbox with single selection or a single 9312 * <select> element. 9313 * 9314 * @param array Labels for the listbox. 9315 * @param enabledArray State for each element in the list. See static 9316 * integers in Container class. 9317 * @param selection Which position is initally selected. 9318 */ 9319 void requestListBox(String[] array, int[] enabledArray, int selection) { 9320 mPrivateHandler.post( 9321 new InvokeListBox(array, enabledArray, selection)); 9322 } 9323 9324 // called by JNI 9325 private void sendMoveFocus(int frame, int node) { 9326 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9327 new WebViewCore.CursorData(frame, node, 0, 0)); 9328 } 9329 9330 // called by JNI 9331 private void sendMoveMouse(int frame, int node, int x, int y) { 9332 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9333 new WebViewCore.CursorData(frame, node, x, y)); 9334 } 9335 9336 /* 9337 * Send a mouse move event to the webcore thread. 9338 * 9339 * @param removeFocus Pass true to remove the WebTextView, if present. 9340 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9341 * called by JNI 9342 */ 9343 @SuppressWarnings("unused") 9344 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9345 if (removeFocus) { 9346 clearTextEntry(); 9347 } 9348 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9349 stopPaintingCaret ? 1 : 0, 0, 9350 cursorData()); 9351 } 9352 9353 /** 9354 * Called by JNI to send a message to the webcore thread that the user 9355 * touched the webpage. 9356 * @param touchGeneration Generation number of the touch, to ignore touches 9357 * after a new one has been generated. 9358 * @param frame Pointer to the frame holding the node that was touched. 9359 * @param node Pointer to the node touched. 9360 * @param x x-position of the touch. 9361 * @param y y-position of the touch. 9362 */ 9363 private void sendMotionUp(int touchGeneration, 9364 int frame, int node, int x, int y) { 9365 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9366 touchUpData.mMoveGeneration = touchGeneration; 9367 touchUpData.mFrame = frame; 9368 touchUpData.mNode = node; 9369 touchUpData.mX = x; 9370 touchUpData.mY = y; 9371 touchUpData.mNativeLayer = nativeScrollableLayer( 9372 x, y, touchUpData.mNativeLayerRect, null); 9373 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9374 } 9375 9376 9377 private int getScaledMaxXScroll() { 9378 int width; 9379 if (mHeightCanMeasure == false) { 9380 width = getViewWidth() / 4; 9381 } else { 9382 Rect visRect = new Rect(); 9383 calcOurVisibleRect(visRect); 9384 width = visRect.width() / 2; 9385 } 9386 // FIXME the divisor should be retrieved from somewhere 9387 return viewToContentX(width); 9388 } 9389 9390 private int getScaledMaxYScroll() { 9391 int height; 9392 if (mHeightCanMeasure == false) { 9393 height = getViewHeight() / 4; 9394 } else { 9395 Rect visRect = new Rect(); 9396 calcOurVisibleRect(visRect); 9397 height = visRect.height() / 2; 9398 } 9399 // FIXME the divisor should be retrieved from somewhere 9400 // the closest thing today is hard-coded into ScrollView.java 9401 // (from ScrollView.java, line 363) int maxJump = height/2; 9402 return Math.round(height * mZoomManager.getInvScale()); 9403 } 9404 9405 /** 9406 * Called by JNI to invalidate view 9407 */ 9408 private void viewInvalidate() { 9409 invalidate(); 9410 } 9411 9412 /** 9413 * Pass the key directly to the page. This assumes that 9414 * nativePageShouldHandleShiftAndArrows() returned true. 9415 */ 9416 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9417 int keyEventAction; 9418 int eventHubAction; 9419 if (down) { 9420 keyEventAction = KeyEvent.ACTION_DOWN; 9421 eventHubAction = EventHub.KEY_DOWN; 9422 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9423 } else { 9424 keyEventAction = KeyEvent.ACTION_UP; 9425 eventHubAction = EventHub.KEY_UP; 9426 } 9427 9428 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9429 1, (metaState & KeyEvent.META_SHIFT_ON) 9430 | (metaState & KeyEvent.META_ALT_ON) 9431 | (metaState & KeyEvent.META_SYM_ON) 9432 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9433 mWebViewCore.sendMessage(eventHubAction, event); 9434 } 9435 9436 // return true if the key was handled 9437 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9438 long time) { 9439 if (mNativeClass == 0) { 9440 return false; 9441 } 9442 mInitialHitTestResult = null; 9443 mLastCursorTime = time; 9444 mLastCursorBounds = nativeGetCursorRingBounds(); 9445 boolean keyHandled 9446 = nativeMoveCursor(keyCode, count, noScroll) == false; 9447 if (DebugFlags.WEB_VIEW) { 9448 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9449 + " mLastCursorTime=" + mLastCursorTime 9450 + " handled=" + keyHandled); 9451 } 9452 if (keyHandled == false) { 9453 return keyHandled; 9454 } 9455 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9456 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9457 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9458 // set last touch so that context menu related functions will work 9459 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9460 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9461 if (mHeightCanMeasure == false) { 9462 return keyHandled; 9463 } 9464 Rect visRect = new Rect(); 9465 calcOurVisibleRect(visRect); 9466 Rect outset = new Rect(visRect); 9467 int maxXScroll = visRect.width() / 2; 9468 int maxYScroll = visRect.height() / 2; 9469 outset.inset(-maxXScroll, -maxYScroll); 9470 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9471 return keyHandled; 9472 } 9473 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9474 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9475 maxXScroll); 9476 if (maxH > 0) { 9477 pinScrollBy(maxH, 0, true, 0); 9478 } else { 9479 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9480 -maxXScroll); 9481 if (maxH < 0) { 9482 pinScrollBy(maxH, 0, true, 0); 9483 } 9484 } 9485 if (mLastCursorBounds.isEmpty()) return keyHandled; 9486 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9487 return keyHandled; 9488 } 9489 if (DebugFlags.WEB_VIEW) { 9490 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9491 + contentCursorRingBounds); 9492 } 9493 requestRectangleOnScreen(viewCursorRingBounds); 9494 return keyHandled; 9495 } 9496 9497 /** 9498 * @return Whether accessibility script has been injected. 9499 */ 9500 private boolean accessibilityScriptInjected() { 9501 // TODO: Maybe the injected script should announce its presence in 9502 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9503 // will check that as one of the conditions it looks for 9504 return mAccessibilityScriptInjected; 9505 } 9506 9507 /** 9508 * Set the background color. It's white by default. Pass 9509 * zero to make the view transparent. 9510 * @param color the ARGB color described by Color.java 9511 */ 9512 @Override 9513 public void setBackgroundColor(int color) { 9514 mBackgroundColor = color; 9515 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9516 } 9517 9518 /** 9519 * @deprecated This method is now obsolete. 9520 */ 9521 @Deprecated 9522 public void debugDump() { 9523 checkThread(); 9524 nativeDebugDump(); 9525 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9526 } 9527 9528 /** 9529 * Draw the HTML page into the specified canvas. This call ignores any 9530 * view-specific zoom, scroll offset, or other changes. It does not draw 9531 * any view-specific chrome, such as progress or URL bars. 9532 * 9533 * @hide only needs to be accessible to Browser and testing 9534 */ 9535 public void drawPage(Canvas canvas) { 9536 calcOurContentVisibleRectF(mVisibleContentRect); 9537 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9538 } 9539 9540 /** 9541 * Enable the communication b/t the webView and VideoViewProxy 9542 * 9543 * @hide only used by the Browser 9544 */ 9545 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9546 mHTML5VideoViewProxy = proxy; 9547 } 9548 9549 /** 9550 * Set the time to wait between passing touches to WebCore. See also the 9551 * TOUCH_SENT_INTERVAL member for further discussion. 9552 * 9553 * @hide This is only used by the DRT test application. 9554 */ 9555 public void setTouchInterval(int interval) { 9556 mCurrentTouchInterval = interval; 9557 } 9558 9559 /** 9560 * Update our cache with updatedText. 9561 * @param updatedText The new text to put in our cache. 9562 * @hide 9563 */ 9564 protected void updateCachedTextfield(String updatedText) { 9565 // Also place our generation number so that when we look at the cache 9566 // we recognize that it is up to date. 9567 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9568 } 9569 9570 /*package*/ void autoFillForm(int autoFillQueryId) { 9571 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9572 } 9573 9574 /* package */ ViewManager getViewManager() { 9575 return mViewManager; 9576 } 9577 9578 private static void checkThread() { 9579 if (Looper.myLooper() != Looper.getMainLooper()) { 9580 Throwable throwable = new Throwable( 9581 "Warning: A WebView method was called on thread '" + 9582 Thread.currentThread().getName() + "'. " + 9583 "All WebView methods must be called on the UI thread. " + 9584 "Future versions of WebView may not support use on other threads."); 9585 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9586 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9587 } 9588 } 9589 9590 /** @hide send content invalidate */ 9591 protected void contentInvalidateAll() { 9592 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9593 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9594 } 9595 } 9596 9597 /** @hide call pageSwapCallback upon next page swap */ 9598 protected void registerPageSwapCallback() { 9599 nativeRegisterPageSwapCallback(mNativeClass); 9600 } 9601 9602 /** @hide discard all textures from tiles */ 9603 protected void discardAllTextures() { 9604 nativeDiscardAllTextures(); 9605 } 9606 9607 /** 9608 * Begin collecting per-tile profiling data 9609 * 9610 * @hide only used by profiling tests 9611 */ 9612 public void tileProfilingStart() { 9613 nativeTileProfilingStart(); 9614 } 9615 /** 9616 * Return per-tile profiling data 9617 * 9618 * @hide only used by profiling tests 9619 */ 9620 public float tileProfilingStop() { 9621 return nativeTileProfilingStop(); 9622 } 9623 9624 /** @hide only used by profiling tests */ 9625 public void tileProfilingClear() { 9626 nativeTileProfilingClear(); 9627 } 9628 /** @hide only used by profiling tests */ 9629 public int tileProfilingNumFrames() { 9630 return nativeTileProfilingNumFrames(); 9631 } 9632 /** @hide only used by profiling tests */ 9633 public int tileProfilingNumTilesInFrame(int frame) { 9634 return nativeTileProfilingNumTilesInFrame(frame); 9635 } 9636 /** @hide only used by profiling tests */ 9637 public int tileProfilingGetInt(int frame, int tile, String key) { 9638 return nativeTileProfilingGetInt(frame, tile, key); 9639 } 9640 /** @hide only used by profiling tests */ 9641 public float tileProfilingGetFloat(int frame, int tile, String key) { 9642 return nativeTileProfilingGetFloat(frame, tile, key); 9643 } 9644 9645 private native int nativeCacheHitFramePointer(); 9646 private native boolean nativeCacheHitIsPlugin(); 9647 private native Rect nativeCacheHitNodeBounds(); 9648 private native int nativeCacheHitNodePointer(); 9649 /* package */ native void nativeClearCursor(); 9650 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 9651 private native int nativeCursorFramePointer(); 9652 private native Rect nativeCursorNodeBounds(); 9653 private native int nativeCursorNodePointer(); 9654 private native boolean nativeCursorIntersects(Rect visibleRect); 9655 private native boolean nativeCursorIsAnchor(); 9656 private native boolean nativeCursorIsTextInput(); 9657 private native Point nativeCursorPosition(); 9658 private native String nativeCursorText(); 9659 /** 9660 * Returns true if the native cursor node says it wants to handle key events 9661 * (ala plugins). This can only be called if mNativeClass is non-zero! 9662 */ 9663 private native boolean nativeCursorWantsKeyEvents(); 9664 private native void nativeDebugDump(); 9665 private native void nativeDestroy(); 9666 9667 /** 9668 * Draw the picture set with a background color and extra. If 9669 * "splitIfNeeded" is true and the return value is not 0, the return value 9670 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9671 * native allocation can be freed. 9672 */ 9673 private native int nativeDraw(Canvas canvas, RectF visibleRect, 9674 int color, int extra, boolean splitIfNeeded); 9675 private native void nativeDumpDisplayTree(String urlOrNull); 9676 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9677 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9678 Rect viewRect, RectF visibleRect, float scale, int extras); 9679 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 9680 RectF visibleRect); 9681 private native void nativeExtendSelection(int x, int y); 9682 private native int nativeFindAll(String findLower, String findUpper, 9683 boolean sameAsLastSearch); 9684 private native void nativeFindNext(boolean forward); 9685 /* package */ native int nativeFocusCandidateFramePointer(); 9686 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9687 /* package */ native boolean nativeFocusCandidateIsPassword(); 9688 private native boolean nativeFocusCandidateIsRtlText(); 9689 private native boolean nativeFocusCandidateIsTextInput(); 9690 /* package */ native int nativeFocusCandidateMaxLength(); 9691 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9692 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 9693 /* package */ native String nativeFocusCandidateName(); 9694 private native Rect nativeFocusCandidateNodeBounds(); 9695 /** 9696 * @return A Rect with left, top, right, bottom set to the corresponding 9697 * padding values in the focus candidate, if it is a textfield/textarea with 9698 * a style. Otherwise return null. This is not actually a rectangle; Rect 9699 * is being used to pass four integers. 9700 */ 9701 private native Rect nativeFocusCandidatePaddingRect(); 9702 /* package */ native int nativeFocusCandidatePointer(); 9703 private native String nativeFocusCandidateText(); 9704 /* package */ native float nativeFocusCandidateTextSize(); 9705 /* package */ native int nativeFocusCandidateLineHeight(); 9706 /** 9707 * Returns an integer corresponding to WebView.cpp::type. 9708 * See WebTextView.setType() 9709 */ 9710 private native int nativeFocusCandidateType(); 9711 private native int nativeFocusCandidateLayerId(); 9712 private native boolean nativeFocusIsPlugin(); 9713 private native Rect nativeFocusNodeBounds(); 9714 /* package */ native int nativeFocusNodePointer(); 9715 private native Rect nativeGetCursorRingBounds(); 9716 private native String nativeGetSelection(); 9717 private native boolean nativeHasCursorNode(); 9718 private native boolean nativeHasFocusNode(); 9719 private native void nativeHideCursor(); 9720 private native boolean nativeHitSelection(int x, int y); 9721 private native String nativeImageURI(int x, int y); 9722 private native Rect nativeLayerBounds(int layer); 9723 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9724 // return true if the page has been scrolled 9725 private native boolean nativeMotionUp(int x, int y, int slop); 9726 // returns false if it handled the key 9727 private native boolean nativeMoveCursor(int keyCode, int count, 9728 boolean noScroll); 9729 private native int nativeMoveGeneration(); 9730 private native void nativeMoveSelection(int x, int y); 9731 /** 9732 * @return true if the page should get the shift and arrow keys, rather 9733 * than select text/navigation. 9734 * 9735 * If the focus is a plugin, or if the focus and cursor match and are 9736 * a contentEditable element, then the page should handle these keys. 9737 */ 9738 private native boolean nativePageShouldHandleShiftAndArrows(); 9739 private native boolean nativePointInNavCache(int x, int y, int slop); 9740 // Like many other of our native methods, you must make sure that 9741 // mNativeClass is not null before calling this method. 9742 private native void nativeResetSelection(); 9743 private native Point nativeSelectableText(); 9744 private native void nativeSelectAll(); 9745 private native void nativeSelectBestAt(Rect rect); 9746 private native void nativeSelectAt(int x, int y); 9747 private native int nativeSelectionX(); 9748 private native int nativeSelectionY(); 9749 private native int nativeFindIndex(); 9750 private native void nativeSetExtendSelection(); 9751 private native void nativeSetFindIsEmpty(); 9752 private native void nativeSetFindIsUp(boolean isUp); 9753 private native void nativeSetHeightCanMeasure(boolean measure); 9754 private native void nativeSetBaseLayer(int nativeInstance, 9755 int layer, Region invalRegion, 9756 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9757 boolean registerPageSwapCallback); 9758 private native int nativeGetBaseLayer(); 9759 private native void nativeShowCursorTimed(); 9760 private native void nativeReplaceBaseContent(int content); 9761 private native void nativeCopyBaseContentToPicture(Picture pict); 9762 private native boolean nativeHasContent(); 9763 private native void nativeSetSelectionPointer(int nativeInstance, 9764 boolean set, float scale, int x, int y); 9765 private native boolean nativeStartSelection(int x, int y); 9766 private native void nativeStopGL(); 9767 private native Rect nativeSubtractLayers(Rect content); 9768 private native int nativeTextGeneration(); 9769 private native void nativeRegisterPageSwapCallback(int nativeInstance); 9770 private native void nativeDiscardAllTextures(); 9771 private native void nativeTileProfilingStart(); 9772 private native float nativeTileProfilingStop(); 9773 private native void nativeTileProfilingClear(); 9774 private native int nativeTileProfilingNumFrames(); 9775 private native int nativeTileProfilingNumTilesInFrame(int frame); 9776 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9777 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9778 // Never call this version except by updateCachedTextfield(String) - 9779 // we always want to pass in our generation number. 9780 private native void nativeUpdateCachedTextfield(String updatedText, 9781 int generation); 9782 private native boolean nativeWordSelection(int x, int y); 9783 // return NO_LEFTEDGE means failure. 9784 static final int NO_LEFTEDGE = -1; 9785 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9786 9787 private native void nativeUseHardwareAccelSkia(boolean enabled); 9788 9789 // Returns a pointer to the scrollable LayerAndroid at the given point. 9790 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9791 Rect scrollBounds); 9792 /** 9793 * Scroll the specified layer. 9794 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9795 * @param newX Destination x position to which to scroll. 9796 * @param newY Destination y position to which to scroll. 9797 * @return True if the layer is successfully scrolled. 9798 */ 9799 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9800 private native void nativeSetIsScrolling(boolean isScrolling); 9801 private native int nativeGetBackgroundColor(); 9802 native boolean nativeSetProperty(String key, String value); 9803 native String nativeGetProperty(String key); 9804 private native void nativeGetTextSelectionRegion(int instance, Region region); 9805 private native void nativeGetSelectionHandles(int instance, int[] handles); 9806 /** 9807 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9808 */ 9809 private static native void nativeOnTrimMemory(int level); 9810 private static native void nativeSetPauseDrawing(int instance, boolean pause); 9811 private static native boolean nativeDisableNavcache(); 9812} 9813