WebView.java revision 3d09531f89238953be9065e0e2c1a755d424d392
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.ClipData; 24import android.content.ClipboardManager; 25import android.content.ComponentCallbacks2; 26import android.content.Context; 27import android.content.DialogInterface; 28import android.content.DialogInterface.OnCancelListener; 29import android.content.Intent; 30import android.content.IntentFilter; 31import android.content.pm.PackageManager; 32import android.content.res.Configuration; 33import android.database.DataSetObserver; 34import android.graphics.Bitmap; 35import android.graphics.BitmapFactory; 36import android.graphics.BitmapShader; 37import android.graphics.Canvas; 38import android.graphics.Color; 39import android.graphics.DrawFilter; 40import android.graphics.Paint; 41import android.graphics.PaintFlagsDrawFilter; 42import android.graphics.Picture; 43import android.graphics.Point; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region; 47import android.graphics.RegionIterator; 48import android.graphics.Shader; 49import android.graphics.drawable.Drawable; 50import android.net.Proxy; 51import android.net.ProxyProperties; 52import android.net.Uri; 53import android.net.http.SslCertificate; 54import android.os.AsyncTask; 55import android.os.Bundle; 56import android.os.Handler; 57import android.os.Looper; 58import android.os.Message; 59import android.os.StrictMode; 60import android.os.SystemClock; 61import android.provider.Settings; 62import android.speech.tts.TextToSpeech; 63import android.util.AttributeSet; 64import android.util.EventLog; 65import android.util.Log; 66import android.view.Display; 67import android.view.Gravity; 68import android.view.HapticFeedbackConstants; 69import android.view.HardwareCanvas; 70import android.view.InputDevice; 71import android.view.KeyCharacterMap; 72import android.view.KeyEvent; 73import android.view.LayoutInflater; 74import android.view.MotionEvent; 75import android.view.ScaleGestureDetector; 76import android.view.SoundEffectConstants; 77import android.view.VelocityTracker; 78import android.view.View; 79import android.view.ViewConfiguration; 80import android.view.ViewGroup; 81import android.view.ViewParent; 82import android.view.ViewTreeObserver; 83import android.view.WindowManager; 84import android.view.accessibility.AccessibilityEvent; 85import android.view.accessibility.AccessibilityManager; 86import android.view.accessibility.AccessibilityNodeInfo; 87import android.view.inputmethod.BaseInputConnection; 88import android.view.inputmethod.EditorInfo; 89import android.view.inputmethod.InputConnection; 90import android.view.inputmethod.InputMethodManager; 91import android.webkit.WebTextView.AutoCompleteAdapter; 92import android.webkit.WebViewCore.DrawData; 93import android.webkit.WebViewCore.EventHub; 94import android.webkit.WebViewCore.TouchEventData; 95import android.webkit.WebViewCore.TouchHighlightData; 96import android.webkit.WebViewCore.WebKitHitTest; 97import android.widget.AbsoluteLayout; 98import android.widget.Adapter; 99import android.widget.AdapterView; 100import android.widget.AdapterView.OnItemClickListener; 101import android.widget.ArrayAdapter; 102import android.widget.CheckedTextView; 103import android.widget.LinearLayout; 104import android.widget.ListView; 105import android.widget.OverScroller; 106import android.widget.Toast; 107 108import junit.framework.Assert; 109 110import java.io.File; 111import java.io.FileInputStream; 112import java.io.FileNotFoundException; 113import java.io.FileOutputStream; 114import java.io.IOException; 115import java.io.InputStream; 116import java.io.OutputStream; 117import java.net.URLDecoder; 118import java.util.ArrayList; 119import java.util.HashMap; 120import java.util.HashSet; 121import java.util.List; 122import java.util.Map; 123import java.util.Set; 124import java.util.Vector; 125import java.util.regex.Matcher; 126import java.util.regex.Pattern; 127 128import javax.microedition.khronos.egl.EGL10; 129import javax.microedition.khronos.egl.EGLContext; 130import javax.microedition.khronos.egl.EGLDisplay; 131 132import static javax.microedition.khronos.egl.EGL10.EGL_DEFAULT_DISPLAY; 133 134/** 135 * <p>A View that displays web pages. This class is the basis upon which you 136 * can roll your own web browser or simply display some online content within your Activity. 137 * It uses the WebKit rendering engine to display 138 * web pages and includes methods to navigate forward and backward 139 * through a history, zoom in and out, perform text searches and more.</p> 140 * <p>To enable the built-in zoom, set 141 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 142 * (introduced in API version 3). 143 * <p>Note that, in order for your Activity to access the Internet and load web pages 144 * in a WebView, you must add the {@code INTERNET} permissions to your 145 * Android Manifest file:</p> 146 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 147 * 148 * <p>This must be a child of the <a 149 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 150 * element.</p> 151 * 152 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 153 * tutorial</a>.</p> 154 * 155 * <h3>Basic usage</h3> 156 * 157 * <p>By default, a WebView provides no browser-like widgets, does not 158 * enable JavaScript and web page errors are ignored. If your goal is only 159 * to display some HTML as a part of your UI, this is probably fine; 160 * the user won't need to interact with the web page beyond reading 161 * it, and the web page won't need to interact with the user. If you 162 * actually want a full-blown web browser, then you probably want to 163 * invoke the Browser application with a URL Intent rather than show it 164 * with a WebView. For example: 165 * <pre> 166 * Uri uri = Uri.parse("http://www.example.com"); 167 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 168 * startActivity(intent); 169 * </pre> 170 * <p>See {@link android.content.Intent} for more information.</p> 171 * 172 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 173 * or set the entire Activity window as a WebView during {@link 174 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 175 * <pre class="prettyprint"> 176 * WebView webview = new WebView(this); 177 * setContentView(webview); 178 * </pre> 179 * 180 * <p>Then load the desired web page:</p> 181 * <pre> 182 * // Simplest usage: note that an exception will NOT be thrown 183 * // if there is an error loading this page (see below). 184 * webview.loadUrl("http://slashdot.org/"); 185 * 186 * // OR, you can also load from an HTML string: 187 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 188 * webview.loadData(summary, "text/html", null); 189 * // ... although note that there are restrictions on what this HTML can do. 190 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 191 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 192 * </pre> 193 * 194 * <p>A WebView has several customization points where you can add your 195 * own behavior. These are:</p> 196 * 197 * <ul> 198 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 199 * This class is called when something that might impact a 200 * browser UI happens, for instance, progress updates and 201 * JavaScript alerts are sent here (see <a 202 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 203 * </li> 204 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 205 * It will be called when things happen that impact the 206 * rendering of the content, eg, errors or form submissions. You 207 * can also intercept URL loading here (via {@link 208 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 209 * shouldOverrideUrlLoading()}).</li> 210 * <li>Modifying the {@link android.webkit.WebSettings}, such as 211 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 212 * setJavaScriptEnabled()}. </li> 213 * <li>Injecting Java objects into the WebView using the 214 * {@link android.webkit.WebView#addJavascriptInterface} method. This 215 * method allows you to inject Java objects into a page's JavaScript 216 * context, so that they can be accessed by JavaScript in the page.</li> 217 * </ul> 218 * 219 * <p>Here's a more complicated example, showing error handling, 220 * settings, and progress notification:</p> 221 * 222 * <pre class="prettyprint"> 223 * // Let's display the progress in the activity title bar, like the 224 * // browser app does. 225 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 226 * 227 * webview.getSettings().setJavaScriptEnabled(true); 228 * 229 * final Activity activity = this; 230 * webview.setWebChromeClient(new WebChromeClient() { 231 * public void onProgressChanged(WebView view, int progress) { 232 * // Activities and WebViews measure progress with different scales. 233 * // The progress meter will automatically disappear when we reach 100% 234 * activity.setProgress(progress * 1000); 235 * } 236 * }); 237 * webview.setWebViewClient(new WebViewClient() { 238 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 239 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 240 * } 241 * }); 242 * 243 * webview.loadUrl("http://slashdot.org/"); 244 * </pre> 245 * 246 * <h3>Cookie and window management</h3> 247 * 248 * <p>For obvious security reasons, your application has its own 249 * cache, cookie store etc.—it does not share the Browser 250 * application's data. Cookies are managed on a separate thread, so 251 * operations like index building don't block the UI 252 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 253 * if you want to use cookies in your application. 254 * </p> 255 * 256 * <p>By default, requests by the HTML to open new windows are 257 * ignored. This is true whether they be opened by JavaScript or by 258 * the target attribute on a link. You can customize your 259 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 260 * and render them in whatever manner you want.</p> 261 * 262 * <p>The standard behavior for an Activity is to be destroyed and 263 * recreated when the device orientation or any other configuration changes. This will cause 264 * the WebView to reload the current page. If you don't want that, you 265 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 266 * changes, and then just leave the WebView alone. It'll automatically 267 * re-orient itself as appropriate. Read <a 268 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 269 * more information about how to handle configuration changes during runtime.</p> 270 * 271 * 272 * <h3>Building web pages to support different screen densities</h3> 273 * 274 * <p>The screen density of a device is based on the screen resolution. A screen with low density 275 * has fewer available pixels per inch, where a screen with high density 276 * has more — sometimes significantly more — pixels per inch. The density of a 277 * screen is important because, other things being equal, a UI element (such as a button) whose 278 * height and width are defined in terms of screen pixels will appear larger on the lower density 279 * screen and smaller on the higher density screen. 280 * For simplicity, Android collapses all actual screen densities into three generalized densities: 281 * high, medium, and low.</p> 282 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 283 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 284 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 285 * are bigger). 286 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 287 * you (as a web developer) target screens with different screen densities.</p> 288 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 289 * <ul> 290 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 291 * default scaling factor used for the current device. For example, if the value of {@code 292 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 293 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 294 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 295 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 296 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 297 * (discussed below), then you can stop this default scaling behavior.</li> 298 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 299 * densities for which this style sheet is to be used. The corresponding value should be either 300 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 301 * density, or high density screens, respectively. For example: 302 * <pre> 303 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 304 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 305 * which is the high density pixel ratio.</p> 306 * </li> 307 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 308 * this to specify the target density for which the web page is designed, using the following 309 * values: 310 * <ul> 311 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 312 * occurs.</li> 313 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 314 * as appropriate.</li> 315 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 316 * low density screens scale down. This is also the default behavior.</li> 317 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 318 * as appropriate.</li> 319 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 320 * values are 70-400).</li> 321 * </ul> 322 * <p>Here's an example meta tag to specify the target density:</p> 323 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 324 * </ul> 325 * <p>If you want to modify your web page for different densities, by using the {@code 326 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 327 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 328 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 329 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 330 * 331 * <h3>HTML5 Video support</h3> 332 * 333 * <p>In order to support inline HTML5 video in your application, you need to have hardware 334 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 335 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 336 * and {@link WebChromeClient#onHideCustomView()} are required, 337 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 338 * </p> 339 * 340 * 341 */ 342@Widget 343public class WebView extends AbsoluteLayout 344 implements ViewTreeObserver.OnGlobalFocusChangeListener, 345 ViewGroup.OnHierarchyChangeListener { 346 347 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 348 @Override 349 public void onGlobalLayout() { 350 if (isShown()) { 351 setGLRectViewport(); 352 } 353 } 354 } 355 356 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 357 @Override 358 public void onScrollChanged() { 359 if (isShown()) { 360 setGLRectViewport(); 361 } 362 } 363 } 364 365 /** 366 * InputConnection used for ContentEditable. This captures the 'delete' 367 * commands and sends delete key presses. 368 */ 369 private class WebViewInputConnection extends BaseInputConnection { 370 public WebViewInputConnection() { 371 super(WebView.this, false); 372 } 373 374 private void sendKeyPress(int keyCode) { 375 long eventTime = SystemClock.uptimeMillis(); 376 sendKeyEvent(new KeyEvent(eventTime, eventTime, 377 KeyEvent.ACTION_DOWN, keyCode, 0, 0, 378 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 379 KeyEvent.FLAG_SOFT_KEYBOARD)); 380 sendKeyEvent(new KeyEvent(SystemClock.uptimeMillis(), eventTime, 381 KeyEvent.ACTION_UP, keyCode, 0, 0, 382 KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 383 KeyEvent.FLAG_SOFT_KEYBOARD)); 384 } 385 386 @Override 387 public boolean deleteSurroundingText(int leftLength, int rightLength) { 388 // Look for one-character delete and send it as a key press. 389 if (leftLength == 1 && rightLength == 0) { 390 sendKeyPress(KeyEvent.KEYCODE_DEL); 391 } else if (leftLength == 0 && rightLength == 1){ 392 sendKeyPress(KeyEvent.KEYCODE_FORWARD_DEL); 393 } else if (mWebViewCore != null) { 394 mWebViewCore.sendMessage(EventHub.DELETE_SURROUNDING_TEXT, 395 leftLength, rightLength); 396 } 397 return super.deleteSurroundingText(leftLength, rightLength); 398 } 399 } 400 401 402 // The listener to capture global layout change event. 403 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 404 405 // The listener to capture scroll event. 406 private InnerScrollChangedListener mScrollChangedListener = null; 407 408 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 409 // the screen all-the-time. Good for profiling our drawing code 410 static private final boolean AUTO_REDRAW_HACK = false; 411 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 412 private boolean mAutoRedraw; 413 414 // Reference to the AlertDialog displayed by InvokeListBox. 415 // It's used to dismiss the dialog in destroy if not done before. 416 private AlertDialog mListBoxDialog = null; 417 418 static final String LOGTAG = "webview"; 419 420 private ZoomManager mZoomManager; 421 422 private final Rect mGLRectViewport = new Rect(); 423 private final Rect mViewRectViewport = new Rect(); 424 private final RectF mVisibleContentRect = new RectF(); 425 private boolean mGLViewportEmpty = false; 426 WebViewInputConnection mInputConnection = null; 427 428 429 /** 430 * Transportation object for returning WebView across thread boundaries. 431 */ 432 public class WebViewTransport { 433 private WebView mWebview; 434 435 /** 436 * Set the WebView to the transportation object. 437 * @param webview The WebView to transport. 438 */ 439 public synchronized void setWebView(WebView webview) { 440 mWebview = webview; 441 } 442 443 /** 444 * Return the WebView object. 445 * @return WebView The transported WebView object. 446 */ 447 public synchronized WebView getWebView() { 448 return mWebview; 449 } 450 } 451 452 private static class OnTrimMemoryListener implements ComponentCallbacks2 { 453 private static OnTrimMemoryListener sInstance = null; 454 455 static void init(Context c) { 456 if (sInstance == null) { 457 sInstance = new OnTrimMemoryListener(c.getApplicationContext()); 458 } 459 } 460 461 private OnTrimMemoryListener(Context c) { 462 c.registerComponentCallbacks(this); 463 } 464 465 @Override 466 public void onConfigurationChanged(Configuration newConfig) { 467 // Ignore 468 } 469 470 @Override 471 public void onLowMemory() { 472 // Ignore 473 } 474 475 @Override 476 public void onTrimMemory(int level) { 477 if (DebugFlags.WEB_VIEW) { 478 Log.d("WebView", "onTrimMemory: " + level); 479 } 480 WebView.nativeOnTrimMemory(level); 481 } 482 483 } 484 485 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 486 private final CallbackProxy mCallbackProxy; 487 488 private final WebViewDatabase mDatabase; 489 490 // SSL certificate for the main top-level page (if secure) 491 private SslCertificate mCertificate; 492 493 // Native WebView pointer that is 0 until the native object has been 494 // created. 495 private int mNativeClass; 496 // This would be final but it needs to be set to null when the WebView is 497 // destroyed. 498 private WebViewCore mWebViewCore; 499 // Handler for dispatching UI messages. 500 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 501 private WebTextView mWebTextView; 502 // Used to ignore changes to webkit text that arrives to the UI side after 503 // more key events. 504 private int mTextGeneration; 505 506 /* package */ void incrementTextGeneration() { mTextGeneration++; } 507 508 // Used by WebViewCore to create child views. 509 /* package */ final ViewManager mViewManager; 510 511 // Used to display in full screen mode 512 PluginFullScreenHolder mFullScreenHolder; 513 514 /** 515 * Position of the last touch event in pixels. 516 * Use integer to prevent loss of dragging delta calculation accuracy; 517 * which was done in float and converted to integer, and resulted in gradual 518 * and compounding touch position and view dragging mismatch. 519 */ 520 private int mLastTouchX; 521 private int mLastTouchY; 522 private int mStartTouchX; 523 private int mStartTouchY; 524 private float mAverageAngle; 525 526 /** 527 * Time of the last touch event. 528 */ 529 private long mLastTouchTime; 530 531 /** 532 * Time of the last time sending touch event to WebViewCore 533 */ 534 private long mLastSentTouchTime; 535 536 /** 537 * The minimum elapsed time before sending another ACTION_MOVE event to 538 * WebViewCore. This really should be tuned for each type of the devices. 539 * For example in Google Map api test case, it takes Dream device at least 540 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 541 * triggering the layout and drawing the picture. While the same process 542 * takes 60+ms on the current high speed device. If we make 543 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 544 * to WebViewCore queue and the real layout and draw events will be pushed 545 * to further, which slows down the refresh rate. Choose 50 to favor the 546 * current high speed devices. For Dream like devices, 100 is a better 547 * choice. Maybe make this in the buildspec later. 548 * (Update 12/14/2010: changed to 0 since current device should be able to 549 * handle the raw events and Map team voted to have the raw events too. 550 */ 551 private static final int TOUCH_SENT_INTERVAL = 0; 552 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 553 554 /** 555 * Helper class to get velocity for fling 556 */ 557 VelocityTracker mVelocityTracker; 558 private int mMaximumFling; 559 private float mLastVelocity; 560 private float mLastVelX; 561 private float mLastVelY; 562 563 // The id of the native layer being scrolled. 564 private int mCurrentScrollingLayerId; 565 private Rect mScrollingLayerRect = new Rect(); 566 567 // only trigger accelerated fling if the new velocity is at least 568 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 569 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 570 571 /** 572 * Touch mode 573 */ 574 private int mTouchMode = TOUCH_DONE_MODE; 575 private static final int TOUCH_INIT_MODE = 1; 576 private static final int TOUCH_DRAG_START_MODE = 2; 577 private static final int TOUCH_DRAG_MODE = 3; 578 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 579 private static final int TOUCH_SHORTPRESS_MODE = 5; 580 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 581 private static final int TOUCH_DONE_MODE = 7; 582 private static final int TOUCH_PINCH_DRAG = 8; 583 private static final int TOUCH_DRAG_LAYER_MODE = 9; 584 585 // Whether to forward the touch events to WebCore 586 // Can only be set by WebKit via JNI. 587 private boolean mForwardTouchEvents = false; 588 589 // Whether to prevent default during touch. The initial value depends on 590 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 591 // for touch down. Otherwise UI will wait for the answer of the first 592 // confirmed move before taking over the control. 593 private static final int PREVENT_DEFAULT_NO = 0; 594 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 595 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 596 private static final int PREVENT_DEFAULT_YES = 3; 597 private static final int PREVENT_DEFAULT_IGNORE = 4; 598 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 599 600 // true when the touch movement exceeds the slop 601 private boolean mConfirmMove; 602 603 // if true, touch events will be first processed by WebCore, if prevent 604 // default is not set, the UI will continue handle them. 605 private boolean mDeferTouchProcess; 606 607 // to avoid interfering with the current touch events, track them 608 // separately. Currently no snapping or fling in the deferred process mode 609 private int mDeferTouchMode = TOUCH_DONE_MODE; 610 private float mLastDeferTouchX; 611 private float mLastDeferTouchY; 612 613 // To keep track of whether the current drag was initiated by a WebTextView, 614 // so that we know not to hide the cursor 615 boolean mDragFromTextInput; 616 617 // Whether or not to draw the cursor ring. 618 private boolean mDrawCursorRing = true; 619 620 // true if onPause has been called (and not onResume) 621 private boolean mIsPaused; 622 623 private HitTestResult mInitialHitTestResult; 624 private WebKitHitTest mFocusedNode; 625 626 /** 627 * Customizable constant 628 */ 629 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 630 private int mTouchSlopSquare; 631 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 632 private int mDoubleTapSlopSquare; 633 // pre-computed density adjusted navigation slop 634 private int mNavSlop; 635 // This should be ViewConfiguration.getTapTimeout() 636 // But system time out is 100ms, which is too short for the browser. 637 // In the browser, if it switches out of tap too soon, jump tap won't work. 638 // In addition, a double tap on a trackpad will always have a duration of 639 // 300ms, so this value must be at least that (otherwise we will timeout the 640 // first tap and convert it to a long press). 641 private static final int TAP_TIMEOUT = 300; 642 // This should be ViewConfiguration.getLongPressTimeout() 643 // But system time out is 500ms, which is too short for the browser. 644 // With a short timeout, it's difficult to treat trigger a short press. 645 private static final int LONG_PRESS_TIMEOUT = 1000; 646 // needed to avoid flinging after a pause of no movement 647 private static final int MIN_FLING_TIME = 250; 648 // draw unfiltered after drag is held without movement 649 private static final int MOTIONLESS_TIME = 100; 650 // The amount of content to overlap between two screens when going through 651 // pages with the space bar, in pixels. 652 private static final int PAGE_SCROLL_OVERLAP = 24; 653 654 /** 655 * These prevent calling requestLayout if either dimension is fixed. This 656 * depends on the layout parameters and the measure specs. 657 */ 658 boolean mWidthCanMeasure; 659 boolean mHeightCanMeasure; 660 661 // Remember the last dimensions we sent to the native side so we can avoid 662 // sending the same dimensions more than once. 663 int mLastWidthSent; 664 int mLastHeightSent; 665 // Since view height sent to webkit could be fixed to avoid relayout, this 666 // value records the last sent actual view height. 667 int mLastActualHeightSent; 668 669 private int mContentWidth; // cache of value from WebViewCore 670 private int mContentHeight; // cache of value from WebViewCore 671 672 // Need to have the separate control for horizontal and vertical scrollbar 673 // style than the View's single scrollbar style 674 private boolean mOverlayHorizontalScrollbar = true; 675 private boolean mOverlayVerticalScrollbar = false; 676 677 // our standard speed. this way small distances will be traversed in less 678 // time than large distances, but we cap the duration, so that very large 679 // distances won't take too long to get there. 680 private static final int STD_SPEED = 480; // pixels per second 681 // time for the longest scroll animation 682 private static final int MAX_DURATION = 750; // milliseconds 683 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 684 685 // Used by OverScrollGlow 686 OverScroller mScroller; 687 688 private boolean mInOverScrollMode = false; 689 private static Paint mOverScrollBackground; 690 private static Paint mOverScrollBorder; 691 692 private boolean mWrapContent; 693 private static final int MOTIONLESS_FALSE = 0; 694 private static final int MOTIONLESS_PENDING = 1; 695 private static final int MOTIONLESS_TRUE = 2; 696 private static final int MOTIONLESS_IGNORE = 3; 697 private int mHeldMotionless; 698 699 // An instance for injecting accessibility in WebViews with disabled 700 // JavaScript or ones for which no accessibility script exists 701 private AccessibilityInjector mAccessibilityInjector; 702 703 // flag indicating if accessibility script is injected so we 704 // know to handle Shift and arrows natively first 705 private boolean mAccessibilityScriptInjected; 706 707 static final boolean USE_JAVA_TEXT_SELECTION = true; 708 static final boolean DEBUG_TEXT_HANDLES = false; 709 private Region mTextSelectionRegion = new Region(); 710 private Paint mTextSelectionPaint; 711 private Drawable mSelectHandleLeft; 712 private Drawable mSelectHandleRight; 713 714 static boolean sDisableNavcache = false; 715 // the color used to highlight the touch rectangles 716 static final int HIGHLIGHT_COLOR = 0x6633b5e5; 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 = new Paint(); 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 static final int EXIT_FULLSCREEN_VIDEO = 140; 800 801 static final int COPY_TO_CLIPBOARD = 141; 802 803 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 804 private static final int LAST_PACKAGE_MSG_ID = HIT_TEST_RESULT; 805 806 static final String[] HandlerPrivateDebugString = { 807 "REMEMBER_PASSWORD", // = 1; 808 "NEVER_REMEMBER_PASSWORD", // = 2; 809 "SWITCH_TO_SHORTPRESS", // = 3; 810 "SWITCH_TO_LONGPRESS", // = 4; 811 "RELEASE_SINGLE_TAP", // = 5; 812 "REQUEST_FORM_DATA", // = 6; 813 "RESUME_WEBCORE_PRIORITY", // = 7; 814 "DRAG_HELD_MOTIONLESS", // = 8; 815 "AWAKEN_SCROLL_BARS", // = 9; 816 "PREVENT_DEFAULT_TIMEOUT", // = 10; 817 "SCROLL_SELECT_TEXT" // = 11; 818 }; 819 820 static final String[] HandlerPackageDebugString = { 821 "SCROLL_TO_MSG_ID", // = 101; 822 "102", // = 102; 823 "103", // = 103; 824 "104", // = 104; 825 "NEW_PICTURE_MSG_ID", // = 105; 826 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 827 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 828 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 829 "UPDATE_ZOOM_RANGE", // = 109; 830 "UNHANDLED_NAV_KEY", // = 110; 831 "CLEAR_TEXT_ENTRY", // = 111; 832 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 833 "SHOW_RECT_MSG_ID", // = 113; 834 "LONG_PRESS_CENTER", // = 114; 835 "PREVENT_TOUCH_ID", // = 115; 836 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 837 "INVAL_RECT_MSG_ID", // = 117; 838 "REQUEST_KEYBOARD", // = 118; 839 "DO_MOTION_UP", // = 119; 840 "SHOW_FULLSCREEN", // = 120; 841 "HIDE_FULLSCREEN", // = 121; 842 "DOM_FOCUS_CHANGED", // = 122; 843 "REPLACE_BASE_CONTENT", // = 123; 844 "FORM_DID_BLUR", // = 124; 845 "RETURN_LABEL", // = 125; 846 "FIND_AGAIN", // = 126; 847 "CENTER_FIT_RECT", // = 127; 848 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 849 "SET_SCROLLBAR_MODES", // = 129; 850 "SELECTION_STRING_CHANGED", // = 130; 851 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 852 "SAVE_WEBARCHIVE_FINISHED", // = 132; 853 "SET_AUTOFILLABLE", // = 133; 854 "AUTOFILL_COMPLETE", // = 134; 855 "SELECT_AT", // = 135; 856 "SCREEN_ON", // = 136; 857 "ENTER_FULLSCREEN_VIDEO", // = 137; 858 "UPDATE_SELECTION", // = 138; 859 "UPDATE_ZOOM_DENSITY" // = 139; 860 }; 861 862 // If the site doesn't use the viewport meta tag to specify the viewport, 863 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 864 static final int DEFAULT_VIEWPORT_WIDTH = 980; 865 866 // normally we try to fit the content to the minimum preferred width 867 // calculated by the Webkit. To avoid the bad behavior when some site's 868 // minimum preferred width keeps growing when changing the viewport width or 869 // the minimum preferred width is huge, an upper limit is needed. 870 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 871 872 // initial scale in percent. 0 means using default. 873 private int mInitialScaleInPercent = 0; 874 875 // Whether or not a scroll event should be sent to webkit. This is only set 876 // to false when restoring the scroll position. 877 private boolean mSendScrollEvent = true; 878 879 private int mSnapScrollMode = SNAP_NONE; 880 private static final int SNAP_NONE = 0; 881 private static final int SNAP_LOCK = 1; // not a separate state 882 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 883 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 884 private boolean mSnapPositive; 885 886 // keep these in sync with their counterparts in WebView.cpp 887 private static final int DRAW_EXTRAS_NONE = 0; 888 private static final int DRAW_EXTRAS_FIND = 1; 889 private static final int DRAW_EXTRAS_SELECTION = 2; 890 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 891 892 // keep this in sync with WebCore:ScrollbarMode in WebKit 893 private static final int SCROLLBAR_AUTO = 0; 894 private static final int SCROLLBAR_ALWAYSOFF = 1; 895 // as we auto fade scrollbar, this is ignored. 896 private static final int SCROLLBAR_ALWAYSON = 2; 897 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 898 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 899 900 // constants for determining script injection strategy 901 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 902 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 903 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 904 905 // the alias via which accessibility JavaScript interface is exposed 906 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 907 908 // Template for JavaScript that injects a screen-reader. 909 private static final String ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE = 910 "javascript:(function() {" + 911 " var chooser = document.createElement('script');" + 912 " chooser.type = 'text/javascript';" + 913 " chooser.src = '%1s';" + 914 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 915 " })();"; 916 917 // Regular expression that matches the "axs" URL parameter. 918 // The value of 0 means the accessibility script is opted out 919 // The value of 1 means the accessibility script is already injected 920 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 921 922 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 923 private TextToSpeech mTextToSpeech; 924 925 // variable to cache the above pattern in case accessibility is enabled. 926 private Pattern mMatchAxsUrlParameterPattern; 927 928 /** 929 * Max distance to overscroll by in pixels. 930 * This how far content can be pulled beyond its normal bounds by the user. 931 */ 932 private int mOverscrollDistance; 933 934 /** 935 * Max distance to overfling by in pixels. 936 * This is how far flinged content can move beyond the end of its normal bounds. 937 */ 938 private int mOverflingDistance; 939 940 private OverScrollGlow mOverScrollGlow; 941 942 // Used to match key downs and key ups 943 private Vector<Integer> mKeysPressed; 944 945 /* package */ static boolean mLogEvent = true; 946 947 // for event log 948 private long mLastTouchUpTime = 0; 949 950 private WebViewCore.AutoFillData mAutoFillData; 951 952 private static boolean sNotificationsEnabled = true; 953 954 /** 955 * URI scheme for telephone number 956 */ 957 public static final String SCHEME_TEL = "tel:"; 958 /** 959 * URI scheme for email address 960 */ 961 public static final String SCHEME_MAILTO = "mailto:"; 962 /** 963 * URI scheme for map address 964 */ 965 public static final String SCHEME_GEO = "geo:0,0?q="; 966 967 private int mBackgroundColor = Color.WHITE; 968 969 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 970 private int mAutoScrollX = 0; 971 private int mAutoScrollY = 0; 972 private int mMinAutoScrollX = 0; 973 private int mMaxAutoScrollX = 0; 974 private int mMinAutoScrollY = 0; 975 private int mMaxAutoScrollY = 0; 976 private Rect mScrollingLayerBounds = new Rect(); 977 private boolean mSentAutoScrollMessage = false; 978 979 // Temporary hack to work around the context removal upon memory pressure 980 private static boolean mIncrementEGLContextHack = false; 981 982 // used for serializing asynchronously handled touch events. 983 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 984 985 // Used to track whether picture updating was paused due to a window focus change. 986 private boolean mPictureUpdatePausedForFocusChange = false; 987 988 // Used to notify listeners of a new picture. 989 private PictureListener mPictureListener; 990 /** 991 * Interface to listen for new pictures as they change. 992 * @deprecated This interface is now obsolete. 993 */ 994 @Deprecated 995 public interface PictureListener { 996 /** 997 * Notify the listener that the picture has changed. 998 * @param view The WebView that owns the picture. 999 * @param picture The new picture. 1000 * @deprecated Due to internal changes, the picture does not include 1001 * composited layers such as fixed position elements or scrollable divs. 1002 * While the PictureListener API can still be used to detect changes in 1003 * the WebView content, you are advised against its usage until a replacement 1004 * is provided in a future Android release 1005 */ 1006 @Deprecated 1007 public void onNewPicture(WebView view, Picture picture); 1008 } 1009 1010 public static class HitTestResult { 1011 /** 1012 * Default HitTestResult, where the target is unknown 1013 */ 1014 public static final int UNKNOWN_TYPE = 0; 1015 /** 1016 * @deprecated This type is no longer used. 1017 */ 1018 @Deprecated 1019 public static final int ANCHOR_TYPE = 1; 1020 /** 1021 * HitTestResult for hitting a phone number 1022 */ 1023 public static final int PHONE_TYPE = 2; 1024 /** 1025 * HitTestResult for hitting a map address 1026 */ 1027 public static final int GEO_TYPE = 3; 1028 /** 1029 * HitTestResult for hitting an email address 1030 */ 1031 public static final int EMAIL_TYPE = 4; 1032 /** 1033 * HitTestResult for hitting an HTML::img tag 1034 */ 1035 public static final int IMAGE_TYPE = 5; 1036 /** 1037 * @deprecated This type is no longer used. 1038 */ 1039 @Deprecated 1040 public static final int IMAGE_ANCHOR_TYPE = 6; 1041 /** 1042 * HitTestResult for hitting a HTML::a tag with src=http 1043 */ 1044 public static final int SRC_ANCHOR_TYPE = 7; 1045 /** 1046 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 1047 */ 1048 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 1049 /** 1050 * HitTestResult for hitting an edit text area 1051 */ 1052 public static final int EDIT_TEXT_TYPE = 9; 1053 1054 private int mType; 1055 private String mExtra; 1056 1057 HitTestResult() { 1058 mType = UNKNOWN_TYPE; 1059 } 1060 1061 private void setType(int type) { 1062 mType = type; 1063 } 1064 1065 private void setExtra(String extra) { 1066 mExtra = extra; 1067 } 1068 1069 /** 1070 * Gets the type of the hit test result. 1071 * @return See the XXX_TYPE constants defined in this class. 1072 */ 1073 public int getType() { 1074 return mType; 1075 } 1076 1077 /** 1078 * Gets additional type-dependant information about the result, see 1079 * {@link WebView#getHitTestResult()} for details. 1080 * @return may either be null or contain extra information about this result. 1081 */ 1082 public String getExtra() { 1083 return mExtra; 1084 } 1085 } 1086 1087 /** 1088 * Refer to {@link WebView#requestFocusNodeHref(Message)} for more information 1089 */ 1090 static class FocusNodeHref { 1091 static final String TITLE = "title"; 1092 static final String URL = "url"; 1093 static final String SRC = "src"; 1094 } 1095 1096 /** 1097 * Construct a new WebView with a Context object. 1098 * @param context A Context object used to access application assets. 1099 */ 1100 public WebView(Context context) { 1101 this(context, null); 1102 } 1103 1104 /** 1105 * Construct a new WebView with layout parameters. 1106 * @param context A Context object used to access application assets. 1107 * @param attrs An AttributeSet passed to our parent. 1108 */ 1109 public WebView(Context context, AttributeSet attrs) { 1110 this(context, attrs, com.android.internal.R.attr.webViewStyle); 1111 } 1112 1113 /** 1114 * Construct a new WebView with layout parameters and a default style. 1115 * @param context A Context object used to access application assets. 1116 * @param attrs An AttributeSet passed to our parent. 1117 * @param defStyle The default style resource ID. 1118 */ 1119 public WebView(Context context, AttributeSet attrs, int defStyle) { 1120 this(context, attrs, defStyle, false); 1121 } 1122 1123 /** 1124 * Construct a new WebView with layout parameters and a default style. 1125 * @param context A Context object used to access application assets. 1126 * @param attrs An AttributeSet passed to our parent. 1127 * @param defStyle The default style resource ID. 1128 * @param privateBrowsing If true the web view will be initialized in private mode. 1129 */ 1130 public WebView(Context context, AttributeSet attrs, int defStyle, 1131 boolean privateBrowsing) { 1132 this(context, attrs, defStyle, null, privateBrowsing); 1133 } 1134 1135 /** 1136 * Construct a new WebView with layout parameters, a default style and a set 1137 * of custom Javscript interfaces to be added to the WebView at initialization 1138 * time. This guarantees that these interfaces will be available when the JS 1139 * context is initialized. 1140 * @param context A Context object used to access application assets. 1141 * @param attrs An AttributeSet passed to our parent. 1142 * @param defStyle The default style resource ID. 1143 * @param javaScriptInterfaces is a Map of interface names, as keys, and 1144 * object implementing those interfaces, as values. 1145 * @param privateBrowsing If true the web view will be initialized in private mode. 1146 * @hide This is an implementation detail. 1147 */ 1148 protected WebView(Context context, AttributeSet attrs, int defStyle, 1149 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 1150 super(context, attrs, defStyle); 1151 checkThread(); 1152 1153 if (context == null) { 1154 throw new IllegalArgumentException("Invalid context argument"); 1155 } 1156 1157 // Used by the chrome stack to find application paths 1158 JniUtil.setContext(context); 1159 1160 mCallbackProxy = new CallbackProxy(context, this); 1161 mViewManager = new ViewManager(this); 1162 L10nUtils.setApplicationContext(context.getApplicationContext()); 1163 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 1164 mDatabase = WebViewDatabase.getInstance(context); 1165 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1166 mZoomManager = new ZoomManager(this, mCallbackProxy); 1167 1168 /* The init method must follow the creation of certain member variables, 1169 * such as the mZoomManager. 1170 */ 1171 init(); 1172 setupPackageListener(context); 1173 setupProxyListener(context); 1174 updateMultiTouchSupport(context); 1175 1176 if (privateBrowsing) { 1177 startPrivateBrowsing(); 1178 } 1179 1180 mAutoFillData = new WebViewCore.AutoFillData(); 1181 } 1182 1183 private static class ProxyReceiver extends BroadcastReceiver { 1184 @Override 1185 public void onReceive(Context context, Intent intent) { 1186 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1187 handleProxyBroadcast(intent); 1188 } 1189 } 1190 } 1191 1192 /* 1193 * Receiver for PROXY_CHANGE_ACTION, will be null when it is not added handling broadcasts. 1194 */ 1195 private static ProxyReceiver sProxyReceiver; 1196 1197 /* 1198 * @param context This method expects this to be a valid context 1199 */ 1200 private static synchronized void setupProxyListener(Context context) { 1201 if (sProxyReceiver != null || sNotificationsEnabled == false) { 1202 return; 1203 } 1204 IntentFilter filter = new IntentFilter(); 1205 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1206 sProxyReceiver = new ProxyReceiver(); 1207 Intent currentProxy = context.getApplicationContext().registerReceiver( 1208 sProxyReceiver, filter); 1209 if (currentProxy != null) { 1210 handleProxyBroadcast(currentProxy); 1211 } 1212 } 1213 1214 /* 1215 * @param context This method expects this to be a valid context 1216 */ 1217 private static synchronized void disableProxyListener(Context context) { 1218 if (sProxyReceiver == null) 1219 return; 1220 1221 context.getApplicationContext().unregisterReceiver(sProxyReceiver); 1222 sProxyReceiver = null; 1223 } 1224 1225 private static void handleProxyBroadcast(Intent intent) { 1226 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1227 if (proxyProperties == null || proxyProperties.getHost() == null) { 1228 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, null); 1229 return; 1230 } 1231 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, proxyProperties); 1232 } 1233 1234 /* 1235 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1236 * or ACTION_PACKAGE_REMOVED. 1237 */ 1238 private static boolean sPackageInstallationReceiverAdded = false; 1239 1240 /* 1241 * A set of Google packages we monitor for the 1242 * navigator.isApplicationInstalled() API. Add additional packages as 1243 * needed. 1244 */ 1245 private static Set<String> sGoogleApps; 1246 static { 1247 sGoogleApps = new HashSet<String>(); 1248 sGoogleApps.add("com.google.android.youtube"); 1249 } 1250 1251 private static class PackageListener extends BroadcastReceiver { 1252 @Override 1253 public void onReceive(Context context, Intent intent) { 1254 final String action = intent.getAction(); 1255 final String packageName = intent.getData().getSchemeSpecificPart(); 1256 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1257 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1258 // if it is replacing, refreshPlugins() when adding 1259 return; 1260 } 1261 1262 if (sGoogleApps.contains(packageName)) { 1263 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1264 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1265 } else { 1266 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1267 } 1268 } 1269 1270 PluginManager pm = PluginManager.getInstance(context); 1271 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1272 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1273 } 1274 } 1275 } 1276 1277 private void setupPackageListener(Context context) { 1278 1279 /* 1280 * we must synchronize the instance check and the creation of the 1281 * receiver to ensure that only ONE receiver exists for all WebView 1282 * instances. 1283 */ 1284 synchronized (WebView.class) { 1285 1286 // if the receiver already exists then we do not need to register it 1287 // again 1288 if (sPackageInstallationReceiverAdded) { 1289 return; 1290 } 1291 1292 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1293 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1294 filter.addDataScheme("package"); 1295 BroadcastReceiver packageListener = new PackageListener(); 1296 context.getApplicationContext().registerReceiver(packageListener, filter); 1297 sPackageInstallationReceiverAdded = true; 1298 } 1299 1300 // check if any of the monitored apps are already installed 1301 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1302 1303 @Override 1304 protected Set<String> doInBackground(Void... unused) { 1305 Set<String> installedPackages = new HashSet<String>(); 1306 PackageManager pm = mContext.getPackageManager(); 1307 for (String name : sGoogleApps) { 1308 try { 1309 pm.getPackageInfo(name, 1310 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1311 installedPackages.add(name); 1312 } catch (PackageManager.NameNotFoundException e) { 1313 // package not found 1314 } 1315 } 1316 return installedPackages; 1317 } 1318 1319 // Executes on the UI thread 1320 @Override 1321 protected void onPostExecute(Set<String> installedPackages) { 1322 if (mWebViewCore != null) { 1323 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1324 } 1325 } 1326 }; 1327 task.execute(); 1328 } 1329 1330 void updateMultiTouchSupport(Context context) { 1331 mZoomManager.updateMultiTouchSupport(context); 1332 } 1333 1334 private void init() { 1335 OnTrimMemoryListener.init(getContext()); 1336 sDisableNavcache = nativeDisableNavcache(); 1337 1338 setWillNotDraw(false); 1339 setFocusable(true); 1340 setFocusableInTouchMode(true); 1341 setClickable(true); 1342 setLongClickable(true); 1343 1344 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1345 int slop = configuration.getScaledTouchSlop(); 1346 mTouchSlopSquare = slop * slop; 1347 slop = configuration.getScaledDoubleTapSlop(); 1348 mDoubleTapSlopSquare = slop * slop; 1349 final float density = getContext().getResources().getDisplayMetrics().density; 1350 // use one line height, 16 based on our current default font, for how 1351 // far we allow a touch be away from the edge of a link 1352 mNavSlop = (int) (16 * density); 1353 mZoomManager.init(density); 1354 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1355 1356 // Compute the inverse of the density squared. 1357 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1358 1359 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1360 mOverflingDistance = configuration.getScaledOverflingDistance(); 1361 1362 setScrollBarStyle(super.getScrollBarStyle()); 1363 // Initially use a size of two, since the user is likely to only hold 1364 // down two keys at a time (shift + another key) 1365 mKeysPressed = new Vector<Integer>(2); 1366 mHTML5VideoViewProxy = null ; 1367 } 1368 1369 @Override 1370 public boolean shouldDelayChildPressedState() { 1371 return true; 1372 } 1373 1374 /** 1375 * Adds accessibility APIs to JavaScript. 1376 * 1377 * Note: This method is responsible to performing the necessary 1378 * check if the accessibility APIs should be exposed. 1379 */ 1380 private void addAccessibilityApisToJavaScript() { 1381 if (AccessibilityManager.getInstance(mContext).isEnabled() 1382 && getSettings().getJavaScriptEnabled()) { 1383 // exposing the TTS for now ... 1384 final Context ctx = getContext(); 1385 if (ctx != null) { 1386 final String packageName = ctx.getPackageName(); 1387 if (packageName != null) { 1388 mTextToSpeech = new TextToSpeech(getContext(), null, null, 1389 packageName + ".**webview**", true); 1390 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1391 } 1392 } 1393 } 1394 } 1395 1396 /** 1397 * Removes accessibility APIs from JavaScript. 1398 */ 1399 private void removeAccessibilityApisFromJavaScript() { 1400 // exposing the TTS for now ... 1401 if (mTextToSpeech != null) { 1402 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1403 mTextToSpeech.shutdown(); 1404 mTextToSpeech = null; 1405 } 1406 } 1407 1408 @Override 1409 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1410 super.onInitializeAccessibilityNodeInfo(info); 1411 info.setScrollable(isScrollableForAccessibility()); 1412 } 1413 1414 @Override 1415 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1416 super.onInitializeAccessibilityEvent(event); 1417 event.setScrollable(isScrollableForAccessibility()); 1418 event.setScrollX(mScrollX); 1419 event.setScrollY(mScrollY); 1420 final int convertedContentWidth = contentToViewX(getContentWidth()); 1421 final int adjustedViewWidth = getWidth() - mPaddingLeft - mPaddingRight; 1422 event.setMaxScrollX(Math.max(convertedContentWidth - adjustedViewWidth, 0)); 1423 final int convertedContentHeight = contentToViewY(getContentHeight()); 1424 final int adjustedViewHeight = getHeight() - mPaddingTop - mPaddingBottom; 1425 event.setMaxScrollY(Math.max(convertedContentHeight - adjustedViewHeight, 0)); 1426 } 1427 1428 private boolean isScrollableForAccessibility() { 1429 return (contentToViewX(getContentWidth()) > getWidth() - mPaddingLeft - mPaddingRight 1430 || contentToViewY(getContentHeight()) > getHeight() - mPaddingTop - mPaddingBottom); 1431 } 1432 1433 @Override 1434 public void setOverScrollMode(int mode) { 1435 super.setOverScrollMode(mode); 1436 if (mode != OVER_SCROLL_NEVER) { 1437 if (mOverScrollGlow == null) { 1438 mOverScrollGlow = new OverScrollGlow(this); 1439 } 1440 } else { 1441 mOverScrollGlow = null; 1442 } 1443 } 1444 1445 /* package */ void adjustDefaultZoomDensity(int zoomDensity) { 1446 final float density = mContext.getResources().getDisplayMetrics().density 1447 * 100 / zoomDensity; 1448 updateDefaultZoomDensity(density); 1449 } 1450 1451 /* package */ void updateDefaultZoomDensity(float density) { 1452 mNavSlop = (int) (16 * density); 1453 mZoomManager.updateDefaultZoomDensity(density); 1454 } 1455 1456 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1457 String password, final Message resumeMsg) { 1458 boolean rVal = false; 1459 if (resumeMsg == null) { 1460 // null resumeMsg implies saving password silently 1461 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1462 } else { 1463 final Message remember = mPrivateHandler.obtainMessage( 1464 REMEMBER_PASSWORD); 1465 remember.getData().putString("host", schemePlusHost); 1466 remember.getData().putString("username", username); 1467 remember.getData().putString("password", password); 1468 remember.obj = resumeMsg; 1469 1470 final Message neverRemember = mPrivateHandler.obtainMessage( 1471 NEVER_REMEMBER_PASSWORD); 1472 neverRemember.getData().putString("host", schemePlusHost); 1473 neverRemember.getData().putString("username", username); 1474 neverRemember.getData().putString("password", password); 1475 neverRemember.obj = resumeMsg; 1476 1477 new AlertDialog.Builder(getContext()) 1478 .setTitle(com.android.internal.R.string.save_password_label) 1479 .setMessage(com.android.internal.R.string.save_password_message) 1480 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1481 new DialogInterface.OnClickListener() { 1482 @Override 1483 public void onClick(DialogInterface dialog, int which) { 1484 resumeMsg.sendToTarget(); 1485 } 1486 }) 1487 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1488 new DialogInterface.OnClickListener() { 1489 @Override 1490 public void onClick(DialogInterface dialog, int which) { 1491 remember.sendToTarget(); 1492 } 1493 }) 1494 .setNegativeButton(com.android.internal.R.string.save_password_never, 1495 new DialogInterface.OnClickListener() { 1496 @Override 1497 public void onClick(DialogInterface dialog, int which) { 1498 neverRemember.sendToTarget(); 1499 } 1500 }) 1501 .setOnCancelListener(new OnCancelListener() { 1502 @Override 1503 public void onCancel(DialogInterface dialog) { 1504 resumeMsg.sendToTarget(); 1505 } 1506 }).show(); 1507 // Return true so that WebViewCore will pause while the dialog is 1508 // up. 1509 rVal = true; 1510 } 1511 return rVal; 1512 } 1513 1514 @Override 1515 public void setScrollBarStyle(int style) { 1516 if (style == View.SCROLLBARS_INSIDE_INSET 1517 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1518 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1519 } else { 1520 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1521 } 1522 super.setScrollBarStyle(style); 1523 } 1524 1525 /** 1526 * Specify whether the horizontal scrollbar has overlay style. 1527 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1528 */ 1529 public void setHorizontalScrollbarOverlay(boolean overlay) { 1530 checkThread(); 1531 mOverlayHorizontalScrollbar = overlay; 1532 } 1533 1534 /** 1535 * Specify whether the vertical scrollbar has overlay style. 1536 * @param overlay TRUE if vertical scrollbar should have overlay style. 1537 */ 1538 public void setVerticalScrollbarOverlay(boolean overlay) { 1539 checkThread(); 1540 mOverlayVerticalScrollbar = overlay; 1541 } 1542 1543 /** 1544 * Return whether horizontal scrollbar has overlay style 1545 * @return TRUE if horizontal scrollbar has overlay style. 1546 */ 1547 public boolean overlayHorizontalScrollbar() { 1548 checkThread(); 1549 return mOverlayHorizontalScrollbar; 1550 } 1551 1552 /** 1553 * Return whether vertical scrollbar has overlay style 1554 * @return TRUE if vertical scrollbar has overlay style. 1555 */ 1556 public boolean overlayVerticalScrollbar() { 1557 checkThread(); 1558 return mOverlayVerticalScrollbar; 1559 } 1560 1561 /* 1562 * Return the width of the view where the content of WebView should render 1563 * to. 1564 * Note: this can be called from WebCoreThread. 1565 */ 1566 /* package */ int getViewWidth() { 1567 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1568 return getWidth(); 1569 } else { 1570 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1571 } 1572 } 1573 1574 /** 1575 * returns the height of the titlebarview (if any). Does not care about 1576 * scrolling 1577 * @hide 1578 */ 1579 protected int getTitleHeight() { 1580 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1581 } 1582 1583 /** 1584 * Return the amount of the titlebarview (if any) that is visible 1585 * 1586 * @deprecated This method is now obsolete. 1587 */ 1588 @Deprecated 1589 public int getVisibleTitleHeight() { 1590 checkThread(); 1591 return getVisibleTitleHeightImpl(); 1592 } 1593 1594 private int getVisibleTitleHeightImpl() { 1595 // need to restrict mScrollY due to over scroll 1596 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 1597 getOverlappingActionModeHeight()); 1598 } 1599 1600 private int mCachedOverlappingActionModeHeight = -1; 1601 1602 private int getOverlappingActionModeHeight() { 1603 if (mFindCallback == null) { 1604 return 0; 1605 } 1606 if (mCachedOverlappingActionModeHeight < 0) { 1607 getGlobalVisibleRect(mGlobalVisibleRect, mGlobalVisibleOffset); 1608 mCachedOverlappingActionModeHeight = Math.max(0, 1609 mFindCallback.getActionModeGlobalBottom() - mGlobalVisibleRect.top); 1610 } 1611 return mCachedOverlappingActionModeHeight; 1612 } 1613 1614 /* 1615 * Return the height of the view where the content of WebView should render 1616 * to. Note that this excludes mTitleBar, if there is one. 1617 * Note: this can be called from WebCoreThread. 1618 */ 1619 /* package */ int getViewHeight() { 1620 return getViewHeightWithTitle() - getVisibleTitleHeightImpl(); 1621 } 1622 1623 int getViewHeightWithTitle() { 1624 int height = getHeight(); 1625 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1626 height -= getHorizontalScrollbarHeight(); 1627 } 1628 return height; 1629 } 1630 1631 /** 1632 * @return The SSL certificate for the main top-level page or null if 1633 * there is no certificate (the site is not secure). 1634 */ 1635 public SslCertificate getCertificate() { 1636 checkThread(); 1637 return mCertificate; 1638 } 1639 1640 /** 1641 * Sets the SSL certificate for the main top-level page. 1642 */ 1643 public void setCertificate(SslCertificate certificate) { 1644 checkThread(); 1645 if (DebugFlags.WEB_VIEW) { 1646 Log.v(LOGTAG, "setCertificate=" + certificate); 1647 } 1648 // here, the certificate can be null (if the site is not secure) 1649 mCertificate = certificate; 1650 } 1651 1652 //------------------------------------------------------------------------- 1653 // Methods called by activity 1654 //------------------------------------------------------------------------- 1655 1656 /** 1657 * Save the username and password for a particular host in the WebView's 1658 * internal database. 1659 * @param host The host that required the credentials. 1660 * @param username The username for the given host. 1661 * @param password The password for the given host. 1662 */ 1663 public void savePassword(String host, String username, String password) { 1664 checkThread(); 1665 mDatabase.setUsernamePassword(host, username, password); 1666 } 1667 1668 /** 1669 * Set the HTTP authentication credentials for a given host and realm. 1670 * 1671 * @param host The host for the credentials. 1672 * @param realm The realm for the credentials. 1673 * @param username The username for the password. If it is null, it means 1674 * password can't be saved. 1675 * @param password The password 1676 */ 1677 public void setHttpAuthUsernamePassword(String host, String realm, 1678 String username, String password) { 1679 checkThread(); 1680 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1681 } 1682 1683 /** 1684 * Retrieve the HTTP authentication username and password for a given 1685 * host & realm pair 1686 * 1687 * @param host The host for which the credentials apply. 1688 * @param realm The realm for which the credentials apply. 1689 * @return String[] if found, String[0] is username, which can be null and 1690 * String[1] is password. Return null if it can't find anything. 1691 */ 1692 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1693 checkThread(); 1694 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1695 } 1696 1697 /** 1698 * Remove Find or Select ActionModes, if active. 1699 */ 1700 private void clearActionModes() { 1701 if (mSelectCallback != null) { 1702 mSelectCallback.finish(); 1703 } 1704 if (mFindCallback != null) { 1705 mFindCallback.finish(); 1706 } 1707 } 1708 1709 /** 1710 * Called to clear state when moving from one page to another, or changing 1711 * in some other way that makes elements associated with the current page 1712 * (such as WebTextView or ActionModes) no longer relevant. 1713 */ 1714 private void clearHelpers() { 1715 clearTextEntry(); 1716 clearActionModes(); 1717 dismissFullScreenMode(); 1718 cancelSelectDialog(); 1719 } 1720 1721 private void cancelSelectDialog() { 1722 if (mListBoxDialog != null) { 1723 mListBoxDialog.cancel(); 1724 mListBoxDialog = null; 1725 } 1726 } 1727 1728 /** 1729 * Destroy the internal state of the WebView. This method should be called 1730 * after the WebView has been removed from the view system. No other 1731 * methods may be called on a WebView after destroy. 1732 */ 1733 public void destroy() { 1734 checkThread(); 1735 destroyImpl(); 1736 } 1737 1738 private void destroyImpl() { 1739 clearHelpers(); 1740 if (mListBoxDialog != null) { 1741 mListBoxDialog.dismiss(); 1742 mListBoxDialog = null; 1743 } 1744 // remove so that it doesn't cause events 1745 if (mWebTextView != null) { 1746 mWebTextView.remove(); 1747 mWebTextView = null; 1748 } 1749 if (mNativeClass != 0) nativeStopGL(); 1750 if (mWebViewCore != null) { 1751 // Set the handlers to null before destroying WebViewCore so no 1752 // more messages will be posted. 1753 mCallbackProxy.setWebViewClient(null); 1754 mCallbackProxy.setWebChromeClient(null); 1755 // Tell WebViewCore to destroy itself 1756 synchronized (this) { 1757 WebViewCore webViewCore = mWebViewCore; 1758 mWebViewCore = null; // prevent using partial webViewCore 1759 webViewCore.destroy(); 1760 } 1761 // Remove any pending messages that might not be serviced yet. 1762 mPrivateHandler.removeCallbacksAndMessages(null); 1763 mCallbackProxy.removeCallbacksAndMessages(null); 1764 // Wake up the WebCore thread just in case it is waiting for a 1765 // JavaScript dialog. 1766 synchronized (mCallbackProxy) { 1767 mCallbackProxy.notify(); 1768 } 1769 } 1770 if (mNativeClass != 0) { 1771 nativeDestroy(); 1772 mNativeClass = 0; 1773 } 1774 } 1775 1776 /** 1777 * Enables platform notifications of data state and proxy changes. 1778 * Notifications are enabled by default. 1779 * 1780 * @deprecated This method is now obsolete. 1781 */ 1782 @Deprecated 1783 public static void enablePlatformNotifications() { 1784 checkThread(); 1785 synchronized (WebView.class) { 1786 Network.enablePlatformNotifications(); 1787 sNotificationsEnabled = true; 1788 Context context = JniUtil.getContext(); 1789 if (context != null) 1790 setupProxyListener(context); 1791 } 1792 } 1793 1794 /** 1795 * Disables platform notifications of data state and proxy changes. 1796 * Notifications are enabled by default. 1797 * 1798 * @deprecated This method is now obsolete. 1799 */ 1800 @Deprecated 1801 public static void disablePlatformNotifications() { 1802 checkThread(); 1803 synchronized (WebView.class) { 1804 Network.disablePlatformNotifications(); 1805 sNotificationsEnabled = false; 1806 Context context = JniUtil.getContext(); 1807 if (context != null) 1808 disableProxyListener(context); 1809 } 1810 } 1811 1812 /** 1813 * Sets JavaScript engine flags. 1814 * 1815 * @param flags JS engine flags in a String 1816 * 1817 * @hide This is an implementation detail. 1818 */ 1819 public void setJsFlags(String flags) { 1820 checkThread(); 1821 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1822 } 1823 1824 /** 1825 * Inform WebView of the network state. This is used to set 1826 * the JavaScript property window.navigator.isOnline and 1827 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1828 * @param networkUp boolean indicating if network is available 1829 */ 1830 public void setNetworkAvailable(boolean networkUp) { 1831 checkThread(); 1832 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1833 networkUp ? 1 : 0, 0); 1834 } 1835 1836 /** 1837 * Inform WebView about the current network type. 1838 * {@hide} 1839 */ 1840 public void setNetworkType(String type, String subtype) { 1841 checkThread(); 1842 Map<String, String> map = new HashMap<String, String>(); 1843 map.put("type", type); 1844 map.put("subtype", subtype); 1845 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1846 } 1847 /** 1848 * Save the state of this WebView used in 1849 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1850 * method no longer stores the display data for this WebView. The previous 1851 * behavior could potentially leak files if {@link #restoreState} was never 1852 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1853 * and restoring the display data. 1854 * @param outState The Bundle to store the WebView state. 1855 * @return The same copy of the back/forward list used to save the state. If 1856 * saveState fails, the returned list will be null. 1857 * @see #savePicture 1858 * @see #restorePicture 1859 */ 1860 public WebBackForwardList saveState(Bundle outState) { 1861 checkThread(); 1862 if (outState == null) { 1863 return null; 1864 } 1865 // We grab a copy of the back/forward list because a client of WebView 1866 // may have invalidated the history list by calling clearHistory. 1867 WebBackForwardList list = copyBackForwardList(); 1868 final int currentIndex = list.getCurrentIndex(); 1869 final int size = list.getSize(); 1870 // We should fail saving the state if the list is empty or the index is 1871 // not in a valid range. 1872 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1873 return null; 1874 } 1875 outState.putInt("index", currentIndex); 1876 // FIXME: This should just be a byte[][] instead of ArrayList but 1877 // Parcel.java does not have the code to handle multi-dimensional 1878 // arrays. 1879 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1880 for (int i = 0; i < size; i++) { 1881 WebHistoryItem item = list.getItemAtIndex(i); 1882 if (null == item) { 1883 // FIXME: this shouldn't happen 1884 // need to determine how item got set to null 1885 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1886 return null; 1887 } 1888 byte[] data = item.getFlattenedData(); 1889 if (data == null) { 1890 // It would be very odd to not have any data for a given history 1891 // item. And we will fail to rebuild the history list without 1892 // flattened data. 1893 return null; 1894 } 1895 history.add(data); 1896 } 1897 outState.putSerializable("history", history); 1898 if (mCertificate != null) { 1899 outState.putBundle("certificate", 1900 SslCertificate.saveState(mCertificate)); 1901 } 1902 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1903 mZoomManager.saveZoomState(outState); 1904 return list; 1905 } 1906 1907 /** 1908 * Save the current display data to the Bundle given. Used in conjunction 1909 * with {@link #saveState}. 1910 * @param b A Bundle to store the display data. 1911 * @param dest The file to store the serialized picture data. Will be 1912 * overwritten with this WebView's picture data. 1913 * @return True if the picture was successfully saved. 1914 * @deprecated This method is now obsolete. 1915 */ 1916 @Deprecated 1917 public boolean savePicture(Bundle b, final File dest) { 1918 checkThread(); 1919 if (dest == null || b == null) { 1920 return false; 1921 } 1922 final Picture p = capturePicture(); 1923 // Use a temporary file while writing to ensure the destination file 1924 // contains valid data. 1925 final File temp = new File(dest.getPath() + ".writing"); 1926 new Thread(new Runnable() { 1927 @Override 1928 public void run() { 1929 FileOutputStream out = null; 1930 try { 1931 out = new FileOutputStream(temp); 1932 p.writeToStream(out); 1933 // Writing the picture succeeded, rename the temporary file 1934 // to the destination. 1935 temp.renameTo(dest); 1936 } catch (Exception e) { 1937 // too late to do anything about it. 1938 } finally { 1939 if (out != null) { 1940 try { 1941 out.close(); 1942 } catch (Exception e) { 1943 // Can't do anything about that 1944 } 1945 } 1946 temp.delete(); 1947 } 1948 } 1949 }).start(); 1950 // now update the bundle 1951 b.putInt("scrollX", mScrollX); 1952 b.putInt("scrollY", mScrollY); 1953 mZoomManager.saveZoomState(b); 1954 return true; 1955 } 1956 1957 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1958 int sx = b.getInt("scrollX", 0); 1959 int sy = b.getInt("scrollY", 0); 1960 1961 mDrawHistory = true; 1962 mHistoryPicture = p; 1963 1964 mScrollX = sx; 1965 mScrollY = sy; 1966 mZoomManager.restoreZoomState(b); 1967 final float scale = mZoomManager.getScale(); 1968 mHistoryWidth = Math.round(p.getWidth() * scale); 1969 mHistoryHeight = Math.round(p.getHeight() * scale); 1970 1971 invalidate(); 1972 } 1973 1974 /** 1975 * Restore the display data that was save in {@link #savePicture}. Used in 1976 * conjunction with {@link #restoreState}. 1977 * 1978 * Note that this will not work if the WebView is hardware accelerated. 1979 * @param b A Bundle containing the saved display data. 1980 * @param src The file where the picture data was stored. 1981 * @return True if the picture was successfully restored. 1982 * @deprecated This method is now obsolete. 1983 */ 1984 @Deprecated 1985 public boolean restorePicture(Bundle b, File src) { 1986 checkThread(); 1987 if (src == null || b == null) { 1988 return false; 1989 } 1990 if (!src.exists()) { 1991 return false; 1992 } 1993 try { 1994 final FileInputStream in = new FileInputStream(src); 1995 final Bundle copy = new Bundle(b); 1996 new Thread(new Runnable() { 1997 @Override 1998 public void run() { 1999 try { 2000 final Picture p = Picture.createFromStream(in); 2001 if (p != null) { 2002 // Post a runnable on the main thread to update the 2003 // history picture fields. 2004 mPrivateHandler.post(new Runnable() { 2005 @Override 2006 public void run() { 2007 restoreHistoryPictureFields(p, copy); 2008 } 2009 }); 2010 } 2011 } finally { 2012 try { 2013 in.close(); 2014 } catch (Exception e) { 2015 // Nothing we can do now. 2016 } 2017 } 2018 } 2019 }).start(); 2020 } catch (FileNotFoundException e){ 2021 e.printStackTrace(); 2022 } 2023 return true; 2024 } 2025 2026 /** 2027 * Saves the view data to the output stream. The output is highly 2028 * version specific, and may not be able to be loaded by newer versions 2029 * of WebView. 2030 * @param stream The {@link OutputStream} to save to 2031 * @return True if saved successfully 2032 * @hide 2033 */ 2034 public boolean saveViewState(OutputStream stream) { 2035 try { 2036 return ViewStateSerializer.serializeViewState(stream, this); 2037 } catch (IOException e) { 2038 Log.w(LOGTAG, "Failed to saveViewState", e); 2039 } 2040 return false; 2041 } 2042 2043 /** 2044 * Loads the view data from the input stream. See 2045 * {@link #saveViewState(OutputStream)} for more information. 2046 * @param stream The {@link InputStream} to load from 2047 * @return True if loaded successfully 2048 * @hide 2049 */ 2050 public boolean loadViewState(InputStream stream) { 2051 try { 2052 mLoadedPicture = ViewStateSerializer.deserializeViewState(stream, this); 2053 mBlockWebkitViewMessages = true; 2054 setNewPicture(mLoadedPicture, true); 2055 mLoadedPicture.mViewState = null; 2056 return true; 2057 } catch (IOException e) { 2058 Log.w(LOGTAG, "Failed to loadViewState", e); 2059 } 2060 return false; 2061 } 2062 2063 /** 2064 * Clears the view state set with {@link #loadViewState(InputStream)}. 2065 * This WebView will then switch to showing the content from webkit 2066 * @hide 2067 */ 2068 public void clearViewState() { 2069 mBlockWebkitViewMessages = false; 2070 mLoadedPicture = null; 2071 invalidate(); 2072 } 2073 2074 /** 2075 * Restore the state of this WebView from the given map used in 2076 * {@link android.app.Activity#onRestoreInstanceState}. This method should 2077 * be called to restore the state of the WebView before using the object. If 2078 * it is called after the WebView has had a chance to build state (load 2079 * pages, create a back/forward list, etc.) there may be undesirable 2080 * side-effects. Please note that this method no longer restores the 2081 * display data for this WebView. See {@link #savePicture} and {@link 2082 * #restorePicture} for saving and restoring the display data. 2083 * @param inState The incoming Bundle of state. 2084 * @return The restored back/forward list or null if restoreState failed. 2085 * @see #savePicture 2086 * @see #restorePicture 2087 */ 2088 public WebBackForwardList restoreState(Bundle inState) { 2089 checkThread(); 2090 WebBackForwardList returnList = null; 2091 if (inState == null) { 2092 return returnList; 2093 } 2094 if (inState.containsKey("index") && inState.containsKey("history")) { 2095 mCertificate = SslCertificate.restoreState( 2096 inState.getBundle("certificate")); 2097 2098 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 2099 final int index = inState.getInt("index"); 2100 // We can't use a clone of the list because we need to modify the 2101 // shared copy, so synchronize instead to prevent concurrent 2102 // modifications. 2103 synchronized (list) { 2104 final List<byte[]> history = 2105 (List<byte[]>) inState.getSerializable("history"); 2106 final int size = history.size(); 2107 // Check the index bounds so we don't crash in native code while 2108 // restoring the history index. 2109 if (index < 0 || index >= size) { 2110 return null; 2111 } 2112 for (int i = 0; i < size; i++) { 2113 byte[] data = history.remove(0); 2114 if (data == null) { 2115 // If we somehow have null data, we cannot reconstruct 2116 // the item and thus our history list cannot be rebuilt. 2117 return null; 2118 } 2119 WebHistoryItem item = new WebHistoryItem(data); 2120 list.addHistoryItem(item); 2121 } 2122 // Grab the most recent copy to return to the caller. 2123 returnList = copyBackForwardList(); 2124 // Update the copy to have the correct index. 2125 returnList.setCurrentIndex(index); 2126 } 2127 // Restore private browsing setting. 2128 if (inState.getBoolean("privateBrowsingEnabled")) { 2129 getSettings().setPrivateBrowsingEnabled(true); 2130 } 2131 mZoomManager.restoreZoomState(inState); 2132 // Remove all pending messages because we are restoring previous 2133 // state. 2134 mWebViewCore.removeMessages(); 2135 // Send a restore state message. 2136 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 2137 } 2138 return returnList; 2139 } 2140 2141 /** 2142 * Load the given URL with the specified additional HTTP headers. 2143 * @param url The URL of the resource to load. 2144 * @param additionalHttpHeaders The additional headers to be used in the 2145 * HTTP request for this URL, specified as a map from name to 2146 * value. Note that if this map contains any of the headers 2147 * that are set by default by the WebView, such as those 2148 * controlling caching, accept types or the User-Agent, their 2149 * values may be overriden by the WebView's defaults. 2150 */ 2151 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 2152 checkThread(); 2153 loadUrlImpl(url, additionalHttpHeaders); 2154 } 2155 2156 private void loadUrlImpl(String url, Map<String, String> extraHeaders) { 2157 switchOutDrawHistory(); 2158 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 2159 arg.mUrl = url; 2160 arg.mExtraHeaders = extraHeaders; 2161 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 2162 clearHelpers(); 2163 } 2164 2165 /** 2166 * Load the given URL. 2167 * @param url The URL of the resource to load. 2168 */ 2169 public void loadUrl(String url) { 2170 checkThread(); 2171 loadUrlImpl(url); 2172 } 2173 2174 private void loadUrlImpl(String url) { 2175 if (url == null) { 2176 return; 2177 } 2178 loadUrlImpl(url, null); 2179 } 2180 2181 /** 2182 * Load the url with postData using "POST" method into the WebView. If url 2183 * is not a network url, it will be loaded with {link 2184 * {@link #loadUrl(String)} instead. 2185 * 2186 * @param url The url of the resource to load. 2187 * @param postData The data will be passed to "POST" request. 2188 */ 2189 public void postUrl(String url, byte[] postData) { 2190 checkThread(); 2191 if (URLUtil.isNetworkUrl(url)) { 2192 switchOutDrawHistory(); 2193 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 2194 arg.mUrl = url; 2195 arg.mPostData = postData; 2196 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 2197 clearHelpers(); 2198 } else { 2199 loadUrlImpl(url); 2200 } 2201 } 2202 2203 /** 2204 * Load the given data into the WebView using a 'data' scheme URL. 2205 * <p> 2206 * Note that JavaScript's same origin policy means that script running in a 2207 * page loaded using this method will be unable to access content loaded 2208 * using any scheme other than 'data', including 'http(s)'. To avoid this 2209 * restriction, use {@link 2210 * #loadDataWithBaseURL(String,String,String,String,String) 2211 * loadDataWithBaseURL()} with an appropriate base URL. 2212 * <p> 2213 * If the value of the encoding parameter is 'base64', then the data must 2214 * be encoded as base64. Otherwise, the data must use ASCII encoding for 2215 * octets inside the range of safe URL characters and use the standard %xx 2216 * hex encoding of URLs for octets outside that range. For example, 2217 * '#', '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 2218 * <p> 2219 * The 'data' scheme URL formed by this method uses the default US-ASCII 2220 * charset. If you need need to set a different charset, you should form a 2221 * 'data' scheme URL which explicitly specifies a charset parameter in the 2222 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 2223 * Note that the charset obtained from the mediatype portion of a data URL 2224 * always overrides that specified in the HTML or XML document itself. 2225 * @param data A String of data in the given encoding. 2226 * @param mimeType The MIME type of the data, e.g. 'text/html'. 2227 * @param encoding The encoding of the data. 2228 */ 2229 public void loadData(String data, String mimeType, String encoding) { 2230 checkThread(); 2231 loadDataImpl(data, mimeType, encoding); 2232 } 2233 2234 private void loadDataImpl(String data, String mimeType, String encoding) { 2235 StringBuilder dataUrl = new StringBuilder("data:"); 2236 dataUrl.append(mimeType); 2237 if ("base64".equals(encoding)) { 2238 dataUrl.append(";base64"); 2239 } 2240 dataUrl.append(","); 2241 dataUrl.append(data); 2242 loadUrlImpl(dataUrl.toString()); 2243 } 2244 2245 /** 2246 * Load the given data into the WebView, using baseUrl as the base URL for 2247 * the content. The base URL is used both to resolve relative URLs and when 2248 * applying JavaScript's same origin policy. The historyUrl is used for the 2249 * history entry. 2250 * <p> 2251 * Note that content specified in this way can access local device files 2252 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 2253 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 2254 * <p> 2255 * If the base URL uses the data scheme, this method is equivalent to 2256 * calling {@link #loadData(String,String,String) loadData()} and the 2257 * historyUrl is ignored. 2258 * @param baseUrl URL to use as the page's base URL. If null defaults to 2259 * 'about:blank' 2260 * @param data A String of data in the given encoding. 2261 * @param mimeType The MIMEType of the data, e.g. 'text/html'. If null, 2262 * defaults to 'text/html'. 2263 * @param encoding The encoding of the data. 2264 * @param historyUrl URL to use as the history entry, if null defaults to 2265 * 'about:blank'. 2266 */ 2267 public void loadDataWithBaseURL(String baseUrl, String data, 2268 String mimeType, String encoding, String historyUrl) { 2269 checkThread(); 2270 2271 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 2272 loadDataImpl(data, mimeType, encoding); 2273 return; 2274 } 2275 switchOutDrawHistory(); 2276 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 2277 arg.mBaseUrl = baseUrl; 2278 arg.mData = data; 2279 arg.mMimeType = mimeType; 2280 arg.mEncoding = encoding; 2281 arg.mHistoryUrl = historyUrl; 2282 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 2283 clearHelpers(); 2284 } 2285 2286 /** 2287 * Saves the current view as a web archive. 2288 * 2289 * @param filename The filename where the archive should be placed. 2290 */ 2291 public void saveWebArchive(String filename) { 2292 checkThread(); 2293 saveWebArchiveImpl(filename, false, null); 2294 } 2295 2296 /* package */ static class SaveWebArchiveMessage { 2297 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 2298 mBasename = basename; 2299 mAutoname = autoname; 2300 mCallback = callback; 2301 } 2302 2303 /* package */ final String mBasename; 2304 /* package */ final boolean mAutoname; 2305 /* package */ final ValueCallback<String> mCallback; 2306 /* package */ String mResultFile; 2307 } 2308 2309 /** 2310 * Saves the current view as a web archive. 2311 * 2312 * @param basename The filename where the archive should be placed. 2313 * @param autoname If false, takes basename to be a file. If true, basename 2314 * is assumed to be a directory in which a filename will be 2315 * chosen according to the url of the current page. 2316 * @param callback Called after the web archive has been saved. The 2317 * parameter for onReceiveValue will either be the filename 2318 * under which the file was saved, or null if saving the 2319 * file failed. 2320 */ 2321 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 2322 checkThread(); 2323 saveWebArchiveImpl(basename, autoname, callback); 2324 } 2325 2326 private void saveWebArchiveImpl(String basename, boolean autoname, 2327 ValueCallback<String> callback) { 2328 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 2329 new SaveWebArchiveMessage(basename, autoname, callback)); 2330 } 2331 2332 /** 2333 * Stop the current load. 2334 */ 2335 public void stopLoading() { 2336 checkThread(); 2337 // TODO: should we clear all the messages in the queue before sending 2338 // STOP_LOADING? 2339 switchOutDrawHistory(); 2340 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 2341 } 2342 2343 /** 2344 * Reload the current url. 2345 */ 2346 public void reload() { 2347 checkThread(); 2348 clearHelpers(); 2349 switchOutDrawHistory(); 2350 mWebViewCore.sendMessage(EventHub.RELOAD); 2351 } 2352 2353 /** 2354 * Return true if this WebView has a back history item. 2355 * @return True iff this WebView has a back history item. 2356 */ 2357 public boolean canGoBack() { 2358 checkThread(); 2359 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2360 synchronized (l) { 2361 if (l.getClearPending()) { 2362 return false; 2363 } else { 2364 return l.getCurrentIndex() > 0; 2365 } 2366 } 2367 } 2368 2369 /** 2370 * Go back in the history of this WebView. 2371 */ 2372 public void goBack() { 2373 checkThread(); 2374 goBackOrForwardImpl(-1); 2375 } 2376 2377 /** 2378 * Return true if this WebView has a forward history item. 2379 * @return True iff this Webview has a forward history item. 2380 */ 2381 public boolean canGoForward() { 2382 checkThread(); 2383 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2384 synchronized (l) { 2385 if (l.getClearPending()) { 2386 return false; 2387 } else { 2388 return l.getCurrentIndex() < l.getSize() - 1; 2389 } 2390 } 2391 } 2392 2393 /** 2394 * Go forward in the history of this WebView. 2395 */ 2396 public void goForward() { 2397 checkThread(); 2398 goBackOrForwardImpl(1); 2399 } 2400 2401 /** 2402 * Return true if the page can go back or forward the given 2403 * number of steps. 2404 * @param steps The negative or positive number of steps to move the 2405 * history. 2406 */ 2407 public boolean canGoBackOrForward(int steps) { 2408 checkThread(); 2409 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2410 synchronized (l) { 2411 if (l.getClearPending()) { 2412 return false; 2413 } else { 2414 int newIndex = l.getCurrentIndex() + steps; 2415 return newIndex >= 0 && newIndex < l.getSize(); 2416 } 2417 } 2418 } 2419 2420 /** 2421 * Go to the history item that is the number of steps away from 2422 * the current item. Steps is negative if backward and positive 2423 * if forward. 2424 * @param steps The number of steps to take back or forward in the back 2425 * forward list. 2426 */ 2427 public void goBackOrForward(int steps) { 2428 checkThread(); 2429 goBackOrForwardImpl(steps); 2430 } 2431 2432 private void goBackOrForwardImpl(int steps) { 2433 goBackOrForward(steps, false); 2434 } 2435 2436 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2437 if (steps != 0) { 2438 clearHelpers(); 2439 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2440 ignoreSnapshot ? 1 : 0); 2441 } 2442 } 2443 2444 /** 2445 * Returns true if private browsing is enabled in this WebView. 2446 */ 2447 public boolean isPrivateBrowsingEnabled() { 2448 checkThread(); 2449 return getSettings().isPrivateBrowsingEnabled(); 2450 } 2451 2452 private void startPrivateBrowsing() { 2453 getSettings().setPrivateBrowsingEnabled(true); 2454 } 2455 2456 private boolean extendScroll(int y) { 2457 int finalY = mScroller.getFinalY(); 2458 int newY = pinLocY(finalY + y); 2459 if (newY == finalY) return false; 2460 mScroller.setFinalY(newY); 2461 mScroller.extendDuration(computeDuration(0, y)); 2462 return true; 2463 } 2464 2465 /** 2466 * Scroll the contents of the view up by half the view size 2467 * @param top true to jump to the top of the page 2468 * @return true if the page was scrolled 2469 */ 2470 public boolean pageUp(boolean top) { 2471 checkThread(); 2472 if (mNativeClass == 0) { 2473 return false; 2474 } 2475 nativeClearCursor(); // start next trackball movement from page edge 2476 if (top) { 2477 // go to the top of the document 2478 return pinScrollTo(mScrollX, 0, true, 0); 2479 } 2480 // Page up 2481 int h = getHeight(); 2482 int y; 2483 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2484 y = -h + PAGE_SCROLL_OVERLAP; 2485 } else { 2486 y = -h / 2; 2487 } 2488 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2489 : extendScroll(y); 2490 } 2491 2492 /** 2493 * Scroll the contents of the view down by half the page size 2494 * @param bottom true to jump to bottom of page 2495 * @return true if the page was scrolled 2496 */ 2497 public boolean pageDown(boolean bottom) { 2498 checkThread(); 2499 if (mNativeClass == 0) { 2500 return false; 2501 } 2502 nativeClearCursor(); // start next trackball movement from page edge 2503 if (bottom) { 2504 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2505 } 2506 // Page down. 2507 int h = getHeight(); 2508 int y; 2509 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2510 y = h - PAGE_SCROLL_OVERLAP; 2511 } else { 2512 y = h / 2; 2513 } 2514 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2515 : extendScroll(y); 2516 } 2517 2518 /** 2519 * Clear the view so that onDraw() will draw nothing but white background, 2520 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2521 */ 2522 public void clearView() { 2523 checkThread(); 2524 mContentWidth = 0; 2525 mContentHeight = 0; 2526 setBaseLayer(0, null, false, false, false); 2527 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2528 } 2529 2530 /** 2531 * Return a new picture that captures the current display of the webview. 2532 * This is a copy of the display, and will be unaffected if the webview 2533 * later loads a different URL. 2534 * 2535 * @return a picture containing the current contents of the view. Note this 2536 * picture is of the entire document, and is not restricted to the 2537 * bounds of the view. 2538 */ 2539 public Picture capturePicture() { 2540 checkThread(); 2541 if (mNativeClass == 0) return null; 2542 Picture result = new Picture(); 2543 nativeCopyBaseContentToPicture(result); 2544 return result; 2545 } 2546 2547 /** 2548 * Return true if the browser is displaying a TextView for text input. 2549 */ 2550 private boolean inEditingMode() { 2551 return mWebTextView != null && mWebTextView.getParent() != null; 2552 } 2553 2554 /** 2555 * Remove the WebTextView. 2556 */ 2557 private void clearTextEntry() { 2558 if (inEditingMode()) { 2559 mWebTextView.remove(); 2560 } else { 2561 // The keyboard may be open with the WebView as the served view 2562 hideSoftKeyboard(); 2563 } 2564 } 2565 2566 /** 2567 * Return the current scale of the WebView 2568 * @return The current scale. 2569 */ 2570 public float getScale() { 2571 checkThread(); 2572 return mZoomManager.getScale(); 2573 } 2574 2575 // Called by JNI. Returns the scale to apply to the text selection handles 2576 /* package */ float getTextHandleScale() { 2577 float density = mContext.getResources().getDisplayMetrics().density; 2578 return density / getScale(); 2579 } 2580 2581 /** 2582 * Compute the reading level scale of the WebView 2583 * @param scale The current scale. 2584 * @return The reading level scale. 2585 */ 2586 /*package*/ float computeReadingLevelScale(float scale) { 2587 return mZoomManager.computeReadingLevelScale(scale); 2588 } 2589 2590 /** 2591 * Set the initial scale for the WebView. 0 means default. If 2592 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2593 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2594 * WebView starts with this value as initial scale. 2595 * Please note that unlike the scale properties in the viewport meta tag, 2596 * this method doesn't take the screen density into account. 2597 * 2598 * @param scaleInPercent The initial scale in percent. 2599 */ 2600 public void setInitialScale(int scaleInPercent) { 2601 checkThread(); 2602 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2603 } 2604 2605 /** 2606 * Invoke the graphical zoom picker widget for this WebView. This will 2607 * result in the zoom widget appearing on the screen to control the zoom 2608 * level of this WebView. 2609 */ 2610 public void invokeZoomPicker() { 2611 checkThread(); 2612 if (!getSettings().supportZoom()) { 2613 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2614 return; 2615 } 2616 clearHelpers(); 2617 mZoomManager.invokeZoomPicker(); 2618 } 2619 2620 /** 2621 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2622 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2623 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2624 * anchor does not have a url or if it is a JavaScript url, the type will 2625 * be UNKNOWN_TYPE and the url has to be retrieved through 2626 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2627 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2628 * the "extra" field. A type of 2629 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2630 * a child node. If a phone number is found, the HitTestResult type is set 2631 * to PHONE_TYPE and the phone number is set in the "extra" field of 2632 * HitTestResult. If a map address is found, the HitTestResult type is set 2633 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2634 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2635 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2636 * HitTestResult type is set to UNKNOWN_TYPE. 2637 */ 2638 public HitTestResult getHitTestResult() { 2639 checkThread(); 2640 return hitTestResult(mInitialHitTestResult); 2641 } 2642 2643 private HitTestResult hitTestResult(HitTestResult fallback) { 2644 if (mNativeClass == 0 || sDisableNavcache) { 2645 return fallback; 2646 } 2647 2648 HitTestResult result = new HitTestResult(); 2649 if (nativeHasCursorNode()) { 2650 if (nativeCursorIsTextInput()) { 2651 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2652 } else { 2653 String text = nativeCursorText(); 2654 if (text != null) { 2655 if (text.startsWith(SCHEME_TEL)) { 2656 result.setType(HitTestResult.PHONE_TYPE); 2657 result.setExtra(URLDecoder.decode(text 2658 .substring(SCHEME_TEL.length()))); 2659 } else if (text.startsWith(SCHEME_MAILTO)) { 2660 result.setType(HitTestResult.EMAIL_TYPE); 2661 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2662 } else if (text.startsWith(SCHEME_GEO)) { 2663 result.setType(HitTestResult.GEO_TYPE); 2664 result.setExtra(URLDecoder.decode(text 2665 .substring(SCHEME_GEO.length()))); 2666 } else if (nativeCursorIsAnchor()) { 2667 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2668 result.setExtra(text); 2669 } 2670 } 2671 } 2672 } else if (fallback != null) { 2673 /* If webkit causes a rebuild while the long press is in progress, 2674 * the cursor node may be reset, even if it is still around. This 2675 * uses the cursor node saved when the touch began. Since the 2676 * nativeImageURI below only changes the result if it is successful, 2677 * this uses the data beneath the touch if available or the original 2678 * tap data otherwise. 2679 */ 2680 Log.v(LOGTAG, "hitTestResult use fallback"); 2681 result = fallback; 2682 } 2683 int type = result.getType(); 2684 if (type == HitTestResult.UNKNOWN_TYPE 2685 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2686 // Now check to see if it is an image. 2687 int contentX = viewToContentX(mLastTouchX + mScrollX); 2688 int contentY = viewToContentY(mLastTouchY + mScrollY); 2689 String text = nativeImageURI(contentX, contentY); 2690 if (text != null) { 2691 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2692 HitTestResult.IMAGE_TYPE : 2693 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2694 result.setExtra(text); 2695 } 2696 } 2697 return result; 2698 } 2699 2700 // Called by JNI when the DOM has changed the focus. Clear the focus so 2701 // that new keys will go to the newly focused field 2702 private void domChangedFocus() { 2703 if (inEditingMode()) { 2704 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2705 } 2706 } 2707 /** 2708 * Request the anchor or image element URL at the last tapped point. 2709 * If hrefMsg is null, this method returns immediately and does not 2710 * dispatch hrefMsg to its target. If the tapped point hits an image, 2711 * an anchor, or an image in an anchor, the message associates 2712 * strings in named keys in its data. The value paired with the key 2713 * may be an empty string. 2714 * 2715 * @param hrefMsg This message will be dispatched with the result of the 2716 * request. The message data contains three keys: 2717 * - "url" returns the anchor's href attribute. 2718 * - "title" returns the anchor's text. 2719 * - "src" returns the image's src attribute. 2720 */ 2721 public void requestFocusNodeHref(Message hrefMsg) { 2722 checkThread(); 2723 if (hrefMsg == null) { 2724 return; 2725 } 2726 int contentX = viewToContentX(mLastTouchX + mScrollX); 2727 int contentY = viewToContentY(mLastTouchY + mScrollY); 2728 if (mFocusedNode != null && mFocusedNode.mHitTestX == contentX 2729 && mFocusedNode.mHitTestY == contentY) { 2730 hrefMsg.getData().putString(FocusNodeHref.URL, mFocusedNode.mLinkUrl); 2731 hrefMsg.getData().putString(FocusNodeHref.TITLE, mFocusedNode.mAnchorText); 2732 hrefMsg.getData().putString(FocusNodeHref.SRC, mFocusedNode.mImageUrl); 2733 hrefMsg.sendToTarget(); 2734 return; 2735 } 2736 if (nativeHasCursorNode()) { 2737 Rect cursorBounds = nativeGetCursorRingBounds(); 2738 if (!cursorBounds.contains(contentX, contentY)) { 2739 int slop = viewToContentDimension(mNavSlop); 2740 cursorBounds.inset(-slop, -slop); 2741 if (cursorBounds.contains(contentX, contentY)) { 2742 contentX = cursorBounds.centerX(); 2743 contentY = cursorBounds.centerY(); 2744 } 2745 } 2746 } 2747 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2748 contentX, contentY, hrefMsg); 2749 } 2750 2751 /** 2752 * Request the url of the image last touched by the user. msg will be sent 2753 * to its target with a String representing the url as its object. 2754 * 2755 * @param msg This message will be dispatched with the result of the request 2756 * as the data member with "url" as key. The result can be null. 2757 */ 2758 public void requestImageRef(Message msg) { 2759 checkThread(); 2760 if (0 == mNativeClass) return; // client isn't initialized 2761 int contentX = viewToContentX(mLastTouchX + mScrollX); 2762 int contentY = viewToContentY(mLastTouchY + mScrollY); 2763 String ref = nativeImageURI(contentX, contentY); 2764 Bundle data = msg.getData(); 2765 data.putString("url", ref); 2766 msg.setData(data); 2767 msg.sendToTarget(); 2768 } 2769 2770 static int pinLoc(int x, int viewMax, int docMax) { 2771// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2772 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2773 // pin the short document to the top/left of the screen 2774 x = 0; 2775// Log.d(LOGTAG, "--- center " + x); 2776 } else if (x < 0) { 2777 x = 0; 2778// Log.d(LOGTAG, "--- zero"); 2779 } else if (x + viewMax > docMax) { 2780 x = docMax - viewMax; 2781// Log.d(LOGTAG, "--- pin " + x); 2782 } 2783 return x; 2784 } 2785 2786 // Expects x in view coordinates 2787 int pinLocX(int x) { 2788 if (mInOverScrollMode) return x; 2789 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2790 } 2791 2792 // Expects y in view coordinates 2793 int pinLocY(int y) { 2794 if (mInOverScrollMode) return y; 2795 return pinLoc(y, getViewHeightWithTitle(), 2796 computeRealVerticalScrollRange() + getTitleHeight()); 2797 } 2798 2799 /** 2800 * A title bar which is embedded in this WebView, and scrolls along with it 2801 * vertically, but not horizontally. 2802 */ 2803 private View mTitleBar; 2804 2805 /** 2806 * the title bar rendering gravity 2807 */ 2808 private int mTitleGravity; 2809 2810 /** 2811 * Add or remove a title bar to be embedded into the WebView, and scroll 2812 * along with it vertically, while remaining in view horizontally. Pass 2813 * null to remove the title bar from the WebView, and return to drawing 2814 * the WebView normally without translating to account for the title bar. 2815 * @hide 2816 */ 2817 public void setEmbeddedTitleBar(View v) { 2818 if (mTitleBar == v) return; 2819 if (mTitleBar != null) { 2820 removeView(mTitleBar); 2821 } 2822 if (null != v) { 2823 addView(v, new AbsoluteLayout.LayoutParams( 2824 ViewGroup.LayoutParams.MATCH_PARENT, 2825 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2826 } 2827 mTitleBar = v; 2828 } 2829 2830 /** 2831 * Set where to render the embedded title bar 2832 * NO_GRAVITY at the top of the page 2833 * TOP at the top of the screen 2834 * @hide 2835 */ 2836 public void setTitleBarGravity(int gravity) { 2837 mTitleGravity = gravity; 2838 // force refresh 2839 invalidate(); 2840 } 2841 2842 /** 2843 * Given a distance in view space, convert it to content space. Note: this 2844 * does not reflect translation, just scaling, so this should not be called 2845 * with coordinates, but should be called for dimensions like width or 2846 * height. 2847 */ 2848 private int viewToContentDimension(int d) { 2849 return Math.round(d * mZoomManager.getInvScale()); 2850 } 2851 2852 /** 2853 * Given an x coordinate in view space, convert it to content space. Also 2854 * may be used for absolute heights (such as for the WebTextView's 2855 * textSize, which is unaffected by the height of the title bar). 2856 */ 2857 /*package*/ int viewToContentX(int x) { 2858 return viewToContentDimension(x); 2859 } 2860 2861 /** 2862 * Given a y coordinate in view space, convert it to content space. 2863 * Takes into account the height of the title bar if there is one 2864 * embedded into the WebView. 2865 */ 2866 /*package*/ int viewToContentY(int y) { 2867 return viewToContentDimension(y - getTitleHeight()); 2868 } 2869 2870 /** 2871 * Given a x coordinate in view space, convert it to content space. 2872 * Returns the result as a float. 2873 */ 2874 private float viewToContentXf(int x) { 2875 return x * mZoomManager.getInvScale(); 2876 } 2877 2878 /** 2879 * Given a y coordinate in view space, convert it to content space. 2880 * Takes into account the height of the title bar if there is one 2881 * embedded into the WebView. Returns the result as a float. 2882 */ 2883 private float viewToContentYf(int y) { 2884 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2885 } 2886 2887 /** 2888 * Given a distance in content space, convert it to view space. Note: this 2889 * does not reflect translation, just scaling, so this should not be called 2890 * with coordinates, but should be called for dimensions like width or 2891 * height. 2892 */ 2893 /*package*/ int contentToViewDimension(int d) { 2894 return Math.round(d * mZoomManager.getScale()); 2895 } 2896 2897 /** 2898 * Given an x coordinate in content space, convert it to view 2899 * space. 2900 */ 2901 /*package*/ int contentToViewX(int x) { 2902 return contentToViewDimension(x); 2903 } 2904 2905 /** 2906 * Given a y coordinate in content space, convert it to view 2907 * space. Takes into account the height of the title bar. 2908 */ 2909 /*package*/ int contentToViewY(int y) { 2910 return contentToViewDimension(y) + getTitleHeight(); 2911 } 2912 2913 private Rect contentToViewRect(Rect x) { 2914 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2915 contentToViewX(x.right), contentToViewY(x.bottom)); 2916 } 2917 2918 /* To invalidate a rectangle in content coordinates, we need to transform 2919 the rect into view coordinates, so we can then call invalidate(...). 2920 2921 Normally, we would just call contentToView[XY](...), which eventually 2922 calls Math.round(coordinate * mActualScale). However, for invalidates, 2923 we need to account for the slop that occurs with antialiasing. To 2924 address that, we are a little more liberal in the size of the rect that 2925 we invalidate. 2926 2927 This liberal calculation calls floor() for the top/left, and ceil() for 2928 the bottom/right coordinates. This catches the possible extra pixels of 2929 antialiasing that we might have missed with just round(). 2930 */ 2931 2932 // Called by JNI to invalidate the View, given rectangle coordinates in 2933 // content space 2934 private void viewInvalidate(int l, int t, int r, int b) { 2935 final float scale = mZoomManager.getScale(); 2936 final int dy = getTitleHeight(); 2937 invalidate((int)Math.floor(l * scale), 2938 (int)Math.floor(t * scale) + dy, 2939 (int)Math.ceil(r * scale), 2940 (int)Math.ceil(b * scale) + dy); 2941 } 2942 2943 // Called by JNI to invalidate the View after a delay, given rectangle 2944 // coordinates in content space 2945 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2946 final float scale = mZoomManager.getScale(); 2947 final int dy = getTitleHeight(); 2948 postInvalidateDelayed(delay, 2949 (int)Math.floor(l * scale), 2950 (int)Math.floor(t * scale) + dy, 2951 (int)Math.ceil(r * scale), 2952 (int)Math.ceil(b * scale) + dy); 2953 } 2954 2955 private void invalidateContentRect(Rect r) { 2956 viewInvalidate(r.left, r.top, r.right, r.bottom); 2957 } 2958 2959 // stop the scroll animation, and don't let a subsequent fling add 2960 // to the existing velocity 2961 private void abortAnimation() { 2962 mScroller.abortAnimation(); 2963 mLastVelocity = 0; 2964 } 2965 2966 /* call from webcoreview.draw(), so we're still executing in the UI thread 2967 */ 2968 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2969 2970 // premature data from webkit, ignore 2971 if ((w | h) == 0) { 2972 return; 2973 } 2974 2975 // don't abort a scroll animation if we didn't change anything 2976 if (mContentWidth != w || mContentHeight != h) { 2977 // record new dimensions 2978 mContentWidth = w; 2979 mContentHeight = h; 2980 // If history Picture is drawn, don't update scroll. They will be 2981 // updated when we get out of that mode. 2982 if (!mDrawHistory) { 2983 // repin our scroll, taking into account the new content size 2984 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2985 if (!mScroller.isFinished()) { 2986 // We are in the middle of a scroll. Repin the final scroll 2987 // position. 2988 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2989 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2990 } 2991 } 2992 } 2993 contentSizeChanged(updateLayout); 2994 } 2995 2996 // Used to avoid sending many visible rect messages. 2997 private Rect mLastVisibleRectSent = new Rect(); 2998 private Rect mLastGlobalRect = new Rect(); 2999 private Rect mVisibleRect = new Rect(); 3000 private Rect mGlobalVisibleRect = new Rect(); 3001 private Point mScrollOffset = new Point(); 3002 3003 Rect sendOurVisibleRect() { 3004 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 3005 calcOurContentVisibleRect(mVisibleRect); 3006 // Rect.equals() checks for null input. 3007 if (!mVisibleRect.equals(mLastVisibleRectSent)) { 3008 if (!mBlockWebkitViewMessages) { 3009 mScrollOffset.set(mVisibleRect.left, mVisibleRect.top); 3010 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 3011 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 3012 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, mScrollOffset); 3013 } 3014 mLastVisibleRectSent.set(mVisibleRect); 3015 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 3016 } 3017 if (getGlobalVisibleRect(mGlobalVisibleRect) 3018 && !mGlobalVisibleRect.equals(mLastGlobalRect)) { 3019 if (DebugFlags.WEB_VIEW) { 3020 Log.v(LOGTAG, "sendOurVisibleRect=(" + mGlobalVisibleRect.left + "," 3021 + mGlobalVisibleRect.top + ",r=" + mGlobalVisibleRect.right + ",b=" 3022 + mGlobalVisibleRect.bottom); 3023 } 3024 // TODO: the global offset is only used by windowRect() 3025 // in ChromeClientAndroid ; other clients such as touch 3026 // and mouse events could return view + screen relative points. 3027 if (!mBlockWebkitViewMessages) { 3028 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, mGlobalVisibleRect); 3029 } 3030 mLastGlobalRect.set(mGlobalVisibleRect); 3031 } 3032 return mVisibleRect; 3033 } 3034 3035 private Point mGlobalVisibleOffset = new Point(); 3036 // Sets r to be the visible rectangle of our webview in view coordinates 3037 private void calcOurVisibleRect(Rect r) { 3038 getGlobalVisibleRect(r, mGlobalVisibleOffset); 3039 r.offset(-mGlobalVisibleOffset.x, -mGlobalVisibleOffset.y); 3040 } 3041 3042 // Sets r to be our visible rectangle in content coordinates 3043 private void calcOurContentVisibleRect(Rect r) { 3044 calcOurVisibleRect(r); 3045 r.left = viewToContentX(r.left); 3046 // viewToContentY will remove the total height of the title bar. Add 3047 // the visible height back in to account for the fact that if the title 3048 // bar is partially visible, the part of the visible rect which is 3049 // displaying our content is displaced by that amount. 3050 r.top = viewToContentY(r.top + getVisibleTitleHeightImpl()); 3051 r.right = viewToContentX(r.right); 3052 r.bottom = viewToContentY(r.bottom); 3053 } 3054 3055 private Rect mContentVisibleRect = new Rect(); 3056 // Sets r to be our visible rectangle in content coordinates. We use this 3057 // method on the native side to compute the position of the fixed layers. 3058 // Uses floating coordinates (necessary to correctly place elements when 3059 // the scale factor is not 1) 3060 private void calcOurContentVisibleRectF(RectF r) { 3061 calcOurVisibleRect(mContentVisibleRect); 3062 r.left = viewToContentXf(mContentVisibleRect.left); 3063 // viewToContentY will remove the total height of the title bar. Add 3064 // the visible height back in to account for the fact that if the title 3065 // bar is partially visible, the part of the visible rect which is 3066 // displaying our content is displaced by that amount. 3067 r.top = viewToContentYf(mContentVisibleRect.top + getVisibleTitleHeightImpl()); 3068 r.right = viewToContentXf(mContentVisibleRect.right); 3069 r.bottom = viewToContentYf(mContentVisibleRect.bottom); 3070 } 3071 3072 static class ViewSizeData { 3073 int mWidth; 3074 int mHeight; 3075 float mHeightWidthRatio; 3076 int mActualViewHeight; 3077 int mTextWrapWidth; 3078 int mAnchorX; 3079 int mAnchorY; 3080 float mScale; 3081 boolean mIgnoreHeight; 3082 } 3083 3084 /** 3085 * Compute unzoomed width and height, and if they differ from the last 3086 * values we sent, send them to webkit (to be used as new viewport) 3087 * 3088 * @param force ensures that the message is sent to webkit even if the width 3089 * or height has not changed since the last message 3090 * 3091 * @return true if new values were sent 3092 */ 3093 boolean sendViewSizeZoom(boolean force) { 3094 if (mBlockWebkitViewMessages) return false; 3095 if (mZoomManager.isPreventingWebkitUpdates()) return false; 3096 3097 int viewWidth = getViewWidth(); 3098 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 3099 // This height could be fixed and be different from actual visible height. 3100 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 3101 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 3102 // Make the ratio more accurate than (newHeight / newWidth), since the 3103 // latter both are calculated and rounded. 3104 float heightWidthRatio = (float) viewHeight / viewWidth; 3105 /* 3106 * Because the native side may have already done a layout before the 3107 * View system was able to measure us, we have to send a height of 0 to 3108 * remove excess whitespace when we grow our width. This will trigger a 3109 * layout and a change in content size. This content size change will 3110 * mean that contentSizeChanged will either call this method directly or 3111 * indirectly from onSizeChanged. 3112 */ 3113 if (newWidth > mLastWidthSent && mWrapContent) { 3114 newHeight = 0; 3115 heightWidthRatio = 0; 3116 } 3117 // Actual visible content height. 3118 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 3119 // Avoid sending another message if the dimensions have not changed. 3120 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 3121 actualViewHeight != mLastActualHeightSent) { 3122 ViewSizeData data = new ViewSizeData(); 3123 data.mWidth = newWidth; 3124 data.mHeight = newHeight; 3125 data.mHeightWidthRatio = heightWidthRatio; 3126 data.mActualViewHeight = actualViewHeight; 3127 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 3128 data.mScale = mZoomManager.getScale(); 3129 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 3130 && !mHeightCanMeasure; 3131 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 3132 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 3133 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 3134 mLastWidthSent = newWidth; 3135 mLastHeightSent = newHeight; 3136 mLastActualHeightSent = actualViewHeight; 3137 mZoomManager.clearDocumentAnchor(); 3138 return true; 3139 } 3140 return false; 3141 } 3142 3143 /** 3144 * Update the double-tap zoom. 3145 */ 3146 /* package */ void updateDoubleTapZoom(int doubleTapZoom) { 3147 mZoomManager.updateDoubleTapZoom(doubleTapZoom); 3148 } 3149 3150 private int computeRealHorizontalScrollRange() { 3151 if (mDrawHistory) { 3152 return mHistoryWidth; 3153 } else { 3154 // to avoid rounding error caused unnecessary scrollbar, use floor 3155 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 3156 } 3157 } 3158 3159 @Override 3160 protected int computeHorizontalScrollRange() { 3161 int range = computeRealHorizontalScrollRange(); 3162 3163 // Adjust reported range if overscrolled to compress the scroll bars 3164 final int scrollX = mScrollX; 3165 final int overscrollRight = computeMaxScrollX(); 3166 if (scrollX < 0) { 3167 range -= scrollX; 3168 } else if (scrollX > overscrollRight) { 3169 range += scrollX - overscrollRight; 3170 } 3171 3172 return range; 3173 } 3174 3175 @Override 3176 protected int computeHorizontalScrollOffset() { 3177 return Math.max(mScrollX, 0); 3178 } 3179 3180 private int computeRealVerticalScrollRange() { 3181 if (mDrawHistory) { 3182 return mHistoryHeight; 3183 } else { 3184 // to avoid rounding error caused unnecessary scrollbar, use floor 3185 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 3186 } 3187 } 3188 3189 @Override 3190 protected int computeVerticalScrollRange() { 3191 int range = computeRealVerticalScrollRange(); 3192 3193 // Adjust reported range if overscrolled to compress the scroll bars 3194 final int scrollY = mScrollY; 3195 final int overscrollBottom = computeMaxScrollY(); 3196 if (scrollY < 0) { 3197 range -= scrollY; 3198 } else if (scrollY > overscrollBottom) { 3199 range += scrollY - overscrollBottom; 3200 } 3201 3202 return range; 3203 } 3204 3205 @Override 3206 protected int computeVerticalScrollOffset() { 3207 return Math.max(mScrollY - getTitleHeight(), 0); 3208 } 3209 3210 @Override 3211 protected int computeVerticalScrollExtent() { 3212 return getViewHeight(); 3213 } 3214 3215 /** @hide */ 3216 @Override 3217 protected void onDrawVerticalScrollBar(Canvas canvas, 3218 Drawable scrollBar, 3219 int l, int t, int r, int b) { 3220 if (mScrollY < 0) { 3221 t -= mScrollY; 3222 } 3223 scrollBar.setBounds(l, t + getVisibleTitleHeightImpl(), r, b); 3224 scrollBar.draw(canvas); 3225 } 3226 3227 @Override 3228 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 3229 boolean clampedY) { 3230 // Special-case layer scrolling so that we do not trigger normal scroll 3231 // updating. 3232 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3233 scrollLayerTo(scrollX, scrollY); 3234 return; 3235 } 3236 mInOverScrollMode = false; 3237 int maxX = computeMaxScrollX(); 3238 int maxY = computeMaxScrollY(); 3239 if (maxX == 0) { 3240 // do not over scroll x if the page just fits the screen 3241 scrollX = pinLocX(scrollX); 3242 } else if (scrollX < 0 || scrollX > maxX) { 3243 mInOverScrollMode = true; 3244 } 3245 if (scrollY < 0 || scrollY > maxY) { 3246 mInOverScrollMode = true; 3247 } 3248 3249 int oldX = mScrollX; 3250 int oldY = mScrollY; 3251 3252 super.scrollTo(scrollX, scrollY); 3253 3254 if (mOverScrollGlow != null) { 3255 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 3256 } 3257 } 3258 3259 /** 3260 * Get the url for the current page. This is not always the same as the url 3261 * passed to WebViewClient.onPageStarted because although the load for 3262 * that url has begun, the current page may not have changed. 3263 * @return The url for the current page. 3264 */ 3265 public String getUrl() { 3266 checkThread(); 3267 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3268 return h != null ? h.getUrl() : null; 3269 } 3270 3271 /** 3272 * Get the original url for the current page. This is not always the same 3273 * as the url passed to WebViewClient.onPageStarted because although the 3274 * load for that url has begun, the current page may not have changed. 3275 * Also, there may have been redirects resulting in a different url to that 3276 * originally requested. 3277 * @return The url that was originally requested for the current page. 3278 */ 3279 public String getOriginalUrl() { 3280 checkThread(); 3281 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3282 return h != null ? h.getOriginalUrl() : null; 3283 } 3284 3285 /** 3286 * Get the title for the current page. This is the title of the current page 3287 * until WebViewClient.onReceivedTitle is called. 3288 * @return The title for the current page. 3289 */ 3290 public String getTitle() { 3291 checkThread(); 3292 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3293 return h != null ? h.getTitle() : null; 3294 } 3295 3296 /** 3297 * Get the favicon for the current page. This is the favicon of the current 3298 * page until WebViewClient.onReceivedIcon is called. 3299 * @return The favicon for the current page. 3300 */ 3301 public Bitmap getFavicon() { 3302 checkThread(); 3303 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3304 return h != null ? h.getFavicon() : null; 3305 } 3306 3307 /** 3308 * Get the touch icon url for the apple-touch-icon <link> element, or 3309 * a URL on this site's server pointing to the standard location of a 3310 * touch icon. 3311 * @hide 3312 */ 3313 public String getTouchIconUrl() { 3314 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 3315 return h != null ? h.getTouchIconUrl() : null; 3316 } 3317 3318 /** 3319 * Get the progress for the current page. 3320 * @return The progress for the current page between 0 and 100. 3321 */ 3322 public int getProgress() { 3323 checkThread(); 3324 return mCallbackProxy.getProgress(); 3325 } 3326 3327 /** 3328 * @return the height of the HTML content. 3329 */ 3330 public int getContentHeight() { 3331 checkThread(); 3332 return mContentHeight; 3333 } 3334 3335 /** 3336 * @return the width of the HTML content. 3337 * @hide 3338 */ 3339 public int getContentWidth() { 3340 return mContentWidth; 3341 } 3342 3343 /** 3344 * @hide 3345 */ 3346 public int getPageBackgroundColor() { 3347 return nativeGetBackgroundColor(); 3348 } 3349 3350 /** 3351 * Pause all layout, parsing, and JavaScript timers for all webviews. This 3352 * is a global requests, not restricted to just this webview. This can be 3353 * useful if the application has been paused. 3354 */ 3355 public void pauseTimers() { 3356 checkThread(); 3357 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 3358 } 3359 3360 /** 3361 * Resume all layout, parsing, and JavaScript timers for all webviews. 3362 * This will resume dispatching all timers. 3363 */ 3364 public void resumeTimers() { 3365 checkThread(); 3366 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 3367 } 3368 3369 /** 3370 * Call this to pause any extra processing associated with this WebView and 3371 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 3372 * is taken offscreen, this could be called to reduce unnecessary CPU or 3373 * network traffic. When the WebView is again "active", call onResume(). 3374 * 3375 * Note that this differs from pauseTimers(), which affects all WebViews. 3376 */ 3377 public void onPause() { 3378 checkThread(); 3379 if (!mIsPaused) { 3380 mIsPaused = true; 3381 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 3382 // We want to pause the current playing video when switching out 3383 // from the current WebView/tab. 3384 if (mHTML5VideoViewProxy != null) { 3385 mHTML5VideoViewProxy.pauseAndDispatch(); 3386 } 3387 if (mNativeClass != 0) { 3388 nativeSetPauseDrawing(mNativeClass, true); 3389 } 3390 3391 cancelSelectDialog(); 3392 WebCoreThreadWatchdog.pause(); 3393 } 3394 } 3395 3396 @Override 3397 protected void onWindowVisibilityChanged(int visibility) { 3398 super.onWindowVisibilityChanged(visibility); 3399 updateDrawingState(); 3400 } 3401 3402 void updateDrawingState() { 3403 if (mNativeClass == 0 || mIsPaused) return; 3404 if (getWindowVisibility() != VISIBLE) { 3405 nativeSetPauseDrawing(mNativeClass, true); 3406 } else if (getVisibility() != VISIBLE) { 3407 nativeSetPauseDrawing(mNativeClass, true); 3408 } else { 3409 nativeSetPauseDrawing(mNativeClass, false); 3410 } 3411 } 3412 3413 /** 3414 * Call this to resume a WebView after a previous call to onPause(). 3415 */ 3416 public void onResume() { 3417 checkThread(); 3418 if (mIsPaused) { 3419 mIsPaused = false; 3420 mWebViewCore.sendMessage(EventHub.ON_RESUME); 3421 if (mNativeClass != 0) { 3422 nativeSetPauseDrawing(mNativeClass, false); 3423 } 3424 } 3425 // Ensure that the watchdog has a currently valid Context to be able to display 3426 // a prompt dialog. For example, if the Activity was finished whilst the WebCore 3427 // thread was blocked and the Activity is started again, we may reuse the blocked 3428 // thread, but we'll have a new Activity. 3429 WebCoreThreadWatchdog.updateContext(mContext); 3430 // We get a call to onResume for new WebViews (i.e. mIsPaused will be false). We need 3431 // to ensure that the Watchdog thread is running for the new WebView, so call 3432 // it outside the if block above. 3433 WebCoreThreadWatchdog.resume(); 3434 } 3435 3436 /** 3437 * Returns true if the view is paused, meaning onPause() was called. Calling 3438 * onResume() sets the paused state back to false. 3439 * @hide 3440 */ 3441 public boolean isPaused() { 3442 return mIsPaused; 3443 } 3444 3445 /** 3446 * Call this to inform the view that memory is low so that it can 3447 * free any available memory. 3448 */ 3449 public void freeMemory() { 3450 checkThread(); 3451 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 3452 } 3453 3454 /** 3455 * Clear the resource cache. Note that the cache is per-application, so 3456 * this will clear the cache for all WebViews used. 3457 * 3458 * @param includeDiskFiles If false, only the RAM cache is cleared. 3459 */ 3460 public void clearCache(boolean includeDiskFiles) { 3461 checkThread(); 3462 // Note: this really needs to be a static method as it clears cache for all 3463 // WebView. But we need mWebViewCore to send message to WebCore thread, so 3464 // we can't make this static. 3465 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 3466 includeDiskFiles ? 1 : 0, 0); 3467 } 3468 3469 /** 3470 * Make sure that clearing the form data removes the adapter from the 3471 * currently focused textfield if there is one. 3472 */ 3473 public void clearFormData() { 3474 checkThread(); 3475 if (inEditingMode()) { 3476 mWebTextView.setAdapterCustom(null); 3477 } 3478 } 3479 3480 /** 3481 * Tell the WebView to clear its internal back/forward list. 3482 */ 3483 public void clearHistory() { 3484 checkThread(); 3485 mCallbackProxy.getBackForwardList().setClearPending(); 3486 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 3487 } 3488 3489 /** 3490 * Clear the SSL preferences table stored in response to proceeding with SSL 3491 * certificate errors. 3492 */ 3493 public void clearSslPreferences() { 3494 checkThread(); 3495 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 3496 } 3497 3498 /** 3499 * Return the WebBackForwardList for this WebView. This contains the 3500 * back/forward list for use in querying each item in the history stack. 3501 * This is a copy of the private WebBackForwardList so it contains only a 3502 * snapshot of the current state. Multiple calls to this method may return 3503 * different objects. The object returned from this method will not be 3504 * updated to reflect any new state. 3505 */ 3506 public WebBackForwardList copyBackForwardList() { 3507 checkThread(); 3508 return mCallbackProxy.getBackForwardList().clone(); 3509 } 3510 3511 /* 3512 * Highlight and scroll to the next occurance of String in findAll. 3513 * Wraps the page infinitely, and scrolls. Must be called after 3514 * calling findAll. 3515 * 3516 * @param forward Direction to search. 3517 */ 3518 public void findNext(boolean forward) { 3519 checkThread(); 3520 if (0 == mNativeClass) return; // client isn't initialized 3521 nativeFindNext(forward); 3522 } 3523 3524 /* 3525 * Find all instances of find on the page and highlight them. 3526 * @param find String to find. 3527 * @return int The number of occurances of the String "find" 3528 * that were found. 3529 */ 3530 public int findAll(String find) { 3531 checkThread(); 3532 if (0 == mNativeClass) return 0; // client isn't initialized 3533 int result = find != null ? nativeFindAll(find.toLowerCase(), 3534 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3535 invalidate(); 3536 mLastFind = find; 3537 return result; 3538 } 3539 3540 /** 3541 * Start an ActionMode for finding text in this WebView. Only works if this 3542 * WebView is attached to the view system. 3543 * @param text If non-null, will be the initial text to search for. 3544 * Otherwise, the last String searched for in this WebView will 3545 * be used to start. 3546 * @param showIme If true, show the IME, assuming the user will begin typing. 3547 * If false and text is non-null, perform a find all. 3548 * @return boolean True if the find dialog is shown, false otherwise. 3549 */ 3550 public boolean showFindDialog(String text, boolean showIme) { 3551 checkThread(); 3552 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3553 if (getParent() == null || startActionMode(callback) == null) { 3554 // Could not start the action mode, so end Find on page 3555 return false; 3556 } 3557 mCachedOverlappingActionModeHeight = -1; 3558 mFindCallback = callback; 3559 setFindIsUp(true); 3560 mFindCallback.setWebView(this); 3561 if (showIme) { 3562 mFindCallback.showSoftInput(); 3563 } else if (text != null) { 3564 mFindCallback.setText(text); 3565 mFindCallback.findAll(); 3566 return true; 3567 } 3568 if (text == null) { 3569 text = mLastFind; 3570 } 3571 if (text != null) { 3572 mFindCallback.setText(text); 3573 } 3574 return true; 3575 } 3576 3577 /** 3578 * Keep track of the find callback so that we can remove its titlebar if 3579 * necessary. 3580 */ 3581 private FindActionModeCallback mFindCallback; 3582 3583 /** 3584 * Toggle whether the find dialog is showing, for both native and Java. 3585 */ 3586 private void setFindIsUp(boolean isUp) { 3587 mFindIsUp = isUp; 3588 if (0 == mNativeClass) return; // client isn't initialized 3589 nativeSetFindIsUp(isUp); 3590 } 3591 3592 /** 3593 * Return the index of the currently highlighted match. 3594 */ 3595 int findIndex() { 3596 if (0 == mNativeClass) return -1; 3597 return nativeFindIndex(); 3598 } 3599 3600 // Used to know whether the find dialog is open. Affects whether 3601 // or not we draw the highlights for matches. 3602 private boolean mFindIsUp; 3603 3604 // Keep track of the last string sent, so we can search again when find is 3605 // reopened. 3606 private String mLastFind; 3607 3608 /** 3609 * Return the first substring consisting of the address of a physical 3610 * location. Currently, only addresses in the United States are detected, 3611 * and consist of: 3612 * - a house number 3613 * - a street name 3614 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3615 * - a city name 3616 * - a state or territory, either spelled out or two-letter abbr. 3617 * - an optional 5 digit or 9 digit zip code. 3618 * 3619 * All names must be correctly capitalized, and the zip code, if present, 3620 * must be valid for the state. The street type must be a standard USPS 3621 * spelling or abbreviation. The state or territory must also be spelled 3622 * or abbreviated using USPS standards. The house number may not exceed 3623 * five digits. 3624 * @param addr The string to search for addresses. 3625 * 3626 * @return the address, or if no address is found, return null. 3627 */ 3628 public static String findAddress(String addr) { 3629 checkThread(); 3630 return findAddress(addr, false); 3631 } 3632 3633 /** 3634 * @hide 3635 * Return the first substring consisting of the address of a physical 3636 * location. Currently, only addresses in the United States are detected, 3637 * and consist of: 3638 * - a house number 3639 * - a street name 3640 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3641 * - a city name 3642 * - a state or territory, either spelled out or two-letter abbr. 3643 * - an optional 5 digit or 9 digit zip code. 3644 * 3645 * Names are optionally capitalized, and the zip code, if present, 3646 * must be valid for the state. The street type must be a standard USPS 3647 * spelling or abbreviation. The state or territory must also be spelled 3648 * or abbreviated using USPS standards. The house number may not exceed 3649 * five digits. 3650 * @param addr The string to search for addresses. 3651 * @param caseInsensitive addr Set to true to make search ignore case. 3652 * 3653 * @return the address, or if no address is found, return null. 3654 */ 3655 public static String findAddress(String addr, boolean caseInsensitive) { 3656 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3657 } 3658 3659 /* 3660 * Clear the highlighting surrounding text matches created by findAll. 3661 */ 3662 public void clearMatches() { 3663 checkThread(); 3664 if (mNativeClass == 0) 3665 return; 3666 nativeSetFindIsEmpty(); 3667 invalidate(); 3668 } 3669 3670 /** 3671 * Called when the find ActionMode ends. 3672 */ 3673 void notifyFindDialogDismissed() { 3674 mFindCallback = null; 3675 mCachedOverlappingActionModeHeight = -1; 3676 if (mWebViewCore == null) { 3677 return; 3678 } 3679 clearMatches(); 3680 setFindIsUp(false); 3681 // Now that the dialog has been removed, ensure that we scroll to a 3682 // location that is not beyond the end of the page. 3683 pinScrollTo(mScrollX, mScrollY, false, 0); 3684 invalidate(); 3685 } 3686 3687 /** 3688 * Query the document to see if it contains any image references. The 3689 * message object will be dispatched with arg1 being set to 1 if images 3690 * were found and 0 if the document does not reference any images. 3691 * @param response The message that will be dispatched with the result. 3692 */ 3693 public void documentHasImages(Message response) { 3694 checkThread(); 3695 if (response == null) { 3696 return; 3697 } 3698 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3699 } 3700 3701 /** 3702 * Request the scroller to abort any ongoing animation 3703 * 3704 * @hide 3705 */ 3706 public void stopScroll() { 3707 mScroller.forceFinished(true); 3708 mLastVelocity = 0; 3709 } 3710 3711 @Override 3712 public void computeScroll() { 3713 if (mScroller.computeScrollOffset()) { 3714 int oldX = mScrollX; 3715 int oldY = mScrollY; 3716 int x = mScroller.getCurrX(); 3717 int y = mScroller.getCurrY(); 3718 invalidate(); // So we draw again 3719 3720 if (!mScroller.isFinished()) { 3721 int rangeX = computeMaxScrollX(); 3722 int rangeY = computeMaxScrollY(); 3723 int overflingDistance = mOverflingDistance; 3724 3725 // Use the layer's scroll data if needed. 3726 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3727 oldX = mScrollingLayerRect.left; 3728 oldY = mScrollingLayerRect.top; 3729 rangeX = mScrollingLayerRect.right; 3730 rangeY = mScrollingLayerRect.bottom; 3731 // No overscrolling for layers. 3732 overflingDistance = 0; 3733 } 3734 3735 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3736 rangeX, rangeY, 3737 overflingDistance, overflingDistance, false); 3738 3739 if (mOverScrollGlow != null) { 3740 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3741 } 3742 } else { 3743 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3744 mScrollX = x; 3745 mScrollY = y; 3746 } else { 3747 // Update the layer position instead of WebView. 3748 scrollLayerTo(x, y); 3749 } 3750 abortAnimation(); 3751 nativeSetIsScrolling(false); 3752 if (!mBlockWebkitViewMessages) { 3753 WebViewCore.resumePriority(); 3754 if (!mSelectingText) { 3755 WebViewCore.resumeUpdatePicture(mWebViewCore); 3756 } 3757 } 3758 if (oldX != mScrollX || oldY != mScrollY) { 3759 sendOurVisibleRect(); 3760 } 3761 } 3762 } else { 3763 super.computeScroll(); 3764 } 3765 } 3766 3767 private void scrollLayerTo(int x, int y) { 3768 if (x == mScrollingLayerRect.left && y == mScrollingLayerRect.top) { 3769 return; 3770 } 3771 nativeScrollLayer(mCurrentScrollingLayerId, x, y); 3772 mScrollingLayerRect.left = x; 3773 mScrollingLayerRect.top = y; 3774 mWebViewCore.sendMessage(WebViewCore.EventHub.SCROLL_LAYER, mCurrentScrollingLayerId, 3775 mScrollingLayerRect); 3776 onScrollChanged(mScrollX, mScrollY, mScrollX, mScrollY); 3777 invalidate(); 3778 } 3779 3780 private static int computeDuration(int dx, int dy) { 3781 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3782 int duration = distance * 1000 / STD_SPEED; 3783 return Math.min(duration, MAX_DURATION); 3784 } 3785 3786 // helper to pin the scrollBy parameters (already in view coordinates) 3787 // returns true if the scroll was changed 3788 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3789 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3790 } 3791 // helper to pin the scrollTo parameters (already in view coordinates) 3792 // returns true if the scroll was changed 3793 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3794 x = pinLocX(x); 3795 y = pinLocY(y); 3796 int dx = x - mScrollX; 3797 int dy = y - mScrollY; 3798 3799 if ((dx | dy) == 0) { 3800 return false; 3801 } 3802 abortAnimation(); 3803 if (animate) { 3804 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3805 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3806 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3807 awakenScrollBars(mScroller.getDuration()); 3808 invalidate(); 3809 } else { 3810 scrollTo(x, y); 3811 } 3812 return true; 3813 } 3814 3815 // Scale from content to view coordinates, and pin. 3816 // Also called by jni webview.cpp 3817 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3818 if (mDrawHistory) { 3819 // disallow WebView to change the scroll position as History Picture 3820 // is used in the view system. 3821 // TODO: as we switchOutDrawHistory when trackball or navigation 3822 // keys are hit, this should be safe. Right? 3823 return false; 3824 } 3825 cx = contentToViewDimension(cx); 3826 cy = contentToViewDimension(cy); 3827 if (mHeightCanMeasure) { 3828 // move our visible rect according to scroll request 3829 if (cy != 0) { 3830 Rect tempRect = new Rect(); 3831 calcOurVisibleRect(tempRect); 3832 tempRect.offset(cx, cy); 3833 requestRectangleOnScreen(tempRect); 3834 } 3835 // FIXME: We scroll horizontally no matter what because currently 3836 // ScrollView and ListView will not scroll horizontally. 3837 // FIXME: Why do we only scroll horizontally if there is no 3838 // vertical scroll? 3839// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3840 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3841 } else { 3842 return pinScrollBy(cx, cy, animate, 0); 3843 } 3844 } 3845 3846 /** 3847 * Called by CallbackProxy when the page starts loading. 3848 * @param url The URL of the page which has started loading. 3849 */ 3850 /* package */ void onPageStarted(String url) { 3851 // every time we start a new page, we want to reset the 3852 // WebView certificate: if the new site is secure, we 3853 // will reload it and get a new certificate set; 3854 // if the new site is not secure, the certificate must be 3855 // null, and that will be the case 3856 setCertificate(null); 3857 3858 // reset the flag since we set to true in if need after 3859 // loading is see onPageFinished(Url) 3860 mAccessibilityScriptInjected = false; 3861 } 3862 3863 /** 3864 * Called by CallbackProxy when the page finishes loading. 3865 * @param url The URL of the page which has finished loading. 3866 */ 3867 /* package */ void onPageFinished(String url) { 3868 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3869 // If the user is now on a different page, or has scrolled the page 3870 // past the point where the title bar is offscreen, ignore the 3871 // scroll request. 3872 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3873 && mScrollX == 0 && mScrollY == 0) { 3874 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3875 SLIDE_TITLE_DURATION); 3876 } 3877 mPageThatNeedsToSlideTitleBarOffScreen = null; 3878 } 3879 mZoomManager.onPageFinished(url); 3880 injectAccessibilityForUrl(url); 3881 } 3882 3883 /** 3884 * This method injects accessibility in the loaded document if accessibility 3885 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3886 * If no URL specific script is found or JavaScript is disabled we fallback to 3887 * the default {@link AccessibilityInjector} implementation. 3888 * </p> 3889 * If the URL has the "axs" paramter set to 1 it has already done the 3890 * script injection so we do nothing. If the parameter is set to 0 3891 * the URL opts out accessibility script injection so we fall back to 3892 * the default {@link AccessibilityInjector}. 3893 * </p> 3894 * Note: If the user has not opted-in the accessibility script injection no scripts 3895 * are injected rather the default {@link AccessibilityInjector} implementation 3896 * is used. 3897 * 3898 * @param url The URL loaded by this {@link WebView}. 3899 */ 3900 private void injectAccessibilityForUrl(String url) { 3901 if (mWebViewCore == null) { 3902 return; 3903 } 3904 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3905 3906 if (!accessibilityManager.isEnabled()) { 3907 // it is possible that accessibility was turned off between reloads 3908 ensureAccessibilityScriptInjectorInstance(false); 3909 return; 3910 } 3911 3912 if (!getSettings().getJavaScriptEnabled()) { 3913 // no JS so we fallback to the basic buil-in support 3914 ensureAccessibilityScriptInjectorInstance(true); 3915 return; 3916 } 3917 3918 // check the URL "axs" parameter to choose appropriate action 3919 int axsParameterValue = getAxsUrlParameterValue(url); 3920 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3921 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3922 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3923 if (onDeviceScriptInjectionEnabled) { 3924 ensureAccessibilityScriptInjectorInstance(false); 3925 // neither script injected nor script injection opted out => we inject 3926 loadUrl(getScreenReaderInjectingJs()); 3927 // TODO: Set this flag after successfull script injection. Maybe upon injection 3928 // the chooser should update the meta tag and we check it to declare success 3929 mAccessibilityScriptInjected = true; 3930 } else { 3931 // injection disabled so we fallback to the basic built-in support 3932 ensureAccessibilityScriptInjectorInstance(true); 3933 } 3934 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3935 // injection opted out so we fallback to the basic buil-in support 3936 ensureAccessibilityScriptInjectorInstance(true); 3937 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3938 ensureAccessibilityScriptInjectorInstance(false); 3939 // the URL provides accessibility but we still need to add our generic script 3940 loadUrl(getScreenReaderInjectingJs()); 3941 } else { 3942 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3943 } 3944 } 3945 3946 /** 3947 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3948 * 3949 * @param present True to ensure an insance, false to ensure no instance. 3950 */ 3951 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3952 if (present) { 3953 if (mAccessibilityInjector == null) { 3954 mAccessibilityInjector = new AccessibilityInjector(this); 3955 } 3956 } else { 3957 mAccessibilityInjector = null; 3958 } 3959 } 3960 3961 /** 3962 * Gets JavaScript that injects a screen-reader. 3963 * 3964 * @return The JavaScript snippet. 3965 */ 3966 private String getScreenReaderInjectingJs() { 3967 String screenReaderUrl = Settings.Secure.getString(mContext.getContentResolver(), 3968 Settings.Secure.ACCESSIBILITY_SCREEN_READER_URL); 3969 return String.format(ACCESSIBILITY_SCREEN_READER_JAVASCRIPT_TEMPLATE, screenReaderUrl); 3970 } 3971 3972 /** 3973 * Gets the "axs" URL parameter value. 3974 * 3975 * @param url A url to fetch the paramter from. 3976 * @return The parameter value if such, -1 otherwise. 3977 */ 3978 private int getAxsUrlParameterValue(String url) { 3979 if (mMatchAxsUrlParameterPattern == null) { 3980 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3981 } 3982 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3983 if (matcher.find()) { 3984 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3985 return Integer.parseInt(keyValuePair.split("=")[1]); 3986 } 3987 return -1; 3988 } 3989 3990 /** 3991 * The URL of a page that sent a message to scroll the title bar off screen. 3992 * 3993 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3994 * title bar off the screen. Sometimes, the scroll position is set before 3995 * the page finishes loading. Rather than scrolling while the page is still 3996 * loading, keep track of the URL and new scroll position so we can perform 3997 * the scroll once the page finishes loading. 3998 */ 3999 private String mPageThatNeedsToSlideTitleBarOffScreen; 4000 4001 /** 4002 * The destination Y scroll position to be used when the page finishes 4003 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 4004 */ 4005 private int mYDistanceToSlideTitleOffScreen; 4006 4007 // scale from content to view coordinates, and pin 4008 // return true if pin caused the final x/y different than the request cx/cy, 4009 // and a future scroll may reach the request cx/cy after our size has 4010 // changed 4011 // return false if the view scroll to the exact position as it is requested, 4012 // where negative numbers are taken to mean 0 4013 private boolean setContentScrollTo(int cx, int cy) { 4014 if (mDrawHistory) { 4015 // disallow WebView to change the scroll position as History Picture 4016 // is used in the view system. 4017 // One known case where this is called is that WebCore tries to 4018 // restore the scroll position. As history Picture already uses the 4019 // saved scroll position, it is ok to skip this. 4020 return false; 4021 } 4022 int vx; 4023 int vy; 4024 if ((cx | cy) == 0) { 4025 // If the page is being scrolled to (0,0), do not add in the title 4026 // bar's height, and simply scroll to (0,0). (The only other work 4027 // in contentToView_ is to multiply, so this would not change 0.) 4028 vx = 0; 4029 vy = 0; 4030 } else { 4031 vx = contentToViewX(cx); 4032 vy = contentToViewY(cy); 4033 } 4034// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 4035// vx + " " + vy + "]"); 4036 // Some mobile sites attempt to scroll the title bar off the page by 4037 // scrolling to (0,1). If we are at the top left corner of the 4038 // page, assume this is an attempt to scroll off the title bar, and 4039 // animate the title bar off screen slowly enough that the user can see 4040 // it. 4041 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 4042 && mTitleBar != null) { 4043 // FIXME: 100 should be defined somewhere as our max progress. 4044 if (getProgress() < 100) { 4045 // Wait to scroll the title bar off screen until the page has 4046 // finished loading. Keep track of the URL and the destination 4047 // Y position 4048 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 4049 mYDistanceToSlideTitleOffScreen = vy; 4050 } else { 4051 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 4052 } 4053 // Since we are animating, we have not yet reached the desired 4054 // scroll position. Do not return true to request another attempt 4055 return false; 4056 } 4057 pinScrollTo(vx, vy, false, 0); 4058 // If the request was to scroll to a negative coordinate, treat it as if 4059 // it was a request to scroll to 0 4060 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 4061 return true; 4062 } else { 4063 return false; 4064 } 4065 } 4066 4067 // scale from content to view coordinates, and pin 4068 private void spawnContentScrollTo(int cx, int cy) { 4069 if (mDrawHistory) { 4070 // disallow WebView to change the scroll position as History Picture 4071 // is used in the view system. 4072 return; 4073 } 4074 int vx = contentToViewX(cx); 4075 int vy = contentToViewY(cy); 4076 pinScrollTo(vx, vy, true, 0); 4077 } 4078 4079 /** 4080 * These are from webkit, and are in content coordinate system (unzoomed) 4081 */ 4082 private void contentSizeChanged(boolean updateLayout) { 4083 // suppress 0,0 since we usually see real dimensions soon after 4084 // this avoids drawing the prev content in a funny place. If we find a 4085 // way to consolidate these notifications, this check may become 4086 // obsolete 4087 if ((mContentWidth | mContentHeight) == 0) { 4088 return; 4089 } 4090 4091 if (mHeightCanMeasure) { 4092 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 4093 || updateLayout) { 4094 requestLayout(); 4095 } 4096 } else if (mWidthCanMeasure) { 4097 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 4098 || updateLayout) { 4099 requestLayout(); 4100 } 4101 } else { 4102 // If we don't request a layout, try to send our view size to the 4103 // native side to ensure that WebCore has the correct dimensions. 4104 sendViewSizeZoom(false); 4105 } 4106 } 4107 4108 /** 4109 * Set the WebViewClient that will receive various notifications and 4110 * requests. This will replace the current handler. 4111 * @param client An implementation of WebViewClient. 4112 */ 4113 public void setWebViewClient(WebViewClient client) { 4114 checkThread(); 4115 mCallbackProxy.setWebViewClient(client); 4116 } 4117 4118 /** 4119 * Gets the WebViewClient 4120 * @return the current WebViewClient instance. 4121 * 4122 * @hide This is an implementation detail. 4123 */ 4124 public WebViewClient getWebViewClient() { 4125 return mCallbackProxy.getWebViewClient(); 4126 } 4127 4128 /** 4129 * Register the interface to be used when content can not be handled by 4130 * the rendering engine, and should be downloaded instead. This will replace 4131 * the current handler. 4132 * @param listener An implementation of DownloadListener. 4133 */ 4134 public void setDownloadListener(DownloadListener listener) { 4135 checkThread(); 4136 mCallbackProxy.setDownloadListener(listener); 4137 } 4138 4139 /** 4140 * Set the chrome handler. This is an implementation of WebChromeClient for 4141 * use in handling JavaScript dialogs, favicons, titles, and the progress. 4142 * This will replace the current handler. 4143 * @param client An implementation of WebChromeClient. 4144 */ 4145 public void setWebChromeClient(WebChromeClient client) { 4146 checkThread(); 4147 mCallbackProxy.setWebChromeClient(client); 4148 } 4149 4150 /** 4151 * Gets the chrome handler. 4152 * @return the current WebChromeClient instance. 4153 * 4154 * @hide This is an implementation detail. 4155 */ 4156 public WebChromeClient getWebChromeClient() { 4157 return mCallbackProxy.getWebChromeClient(); 4158 } 4159 4160 /** 4161 * Set the back/forward list client. This is an implementation of 4162 * WebBackForwardListClient for handling new items and changes in the 4163 * history index. 4164 * @param client An implementation of WebBackForwardListClient. 4165 * {@hide} 4166 */ 4167 public void setWebBackForwardListClient(WebBackForwardListClient client) { 4168 mCallbackProxy.setWebBackForwardListClient(client); 4169 } 4170 4171 /** 4172 * Gets the WebBackForwardListClient. 4173 * {@hide} 4174 */ 4175 public WebBackForwardListClient getWebBackForwardListClient() { 4176 return mCallbackProxy.getWebBackForwardListClient(); 4177 } 4178 4179 /** 4180 * Set the Picture listener. This is an interface used to receive 4181 * notifications of a new Picture. 4182 * @param listener An implementation of WebView.PictureListener. 4183 * @deprecated This method is now obsolete. 4184 */ 4185 @Deprecated 4186 public void setPictureListener(PictureListener listener) { 4187 checkThread(); 4188 mPictureListener = listener; 4189 } 4190 4191 /** 4192 * {@hide} 4193 */ 4194 /* FIXME: Debug only! Remove for SDK! */ 4195 public void externalRepresentation(Message callback) { 4196 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 4197 } 4198 4199 /** 4200 * {@hide} 4201 */ 4202 /* FIXME: Debug only! Remove for SDK! */ 4203 public void documentAsText(Message callback) { 4204 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 4205 } 4206 4207 /** 4208 * This method injects the supplied Java object into the WebView. The 4209 * object is injected into the JavaScript context of the main frame, using 4210 * the supplied name. This allows the Java object to be accessed from 4211 * JavaScript. Note that that injected objects will not appear in 4212 * JavaScript until the page is next (re)loaded. For example: 4213 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 4214 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 4215 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 4216 * <p><strong>IMPORTANT:</strong> 4217 * <ul> 4218 * <li> addJavascriptInterface() can be used to allow JavaScript to control 4219 * the host application. This is a powerful feature, but also presents a 4220 * security risk. Use of this method in a WebView containing untrusted 4221 * content could allow an attacker to manipulate the host application in 4222 * unintended ways, executing Java code with the permissions of the host 4223 * application. Use extreme care when using this method in a WebView which 4224 * could contain untrusted content. 4225 * <li> JavaScript interacts with Java object on a private, background 4226 * thread of the WebView. Care is therefore required to maintain thread 4227 * safety.</li> 4228 * </ul></p> 4229 * @param object The Java object to inject into the WebView's JavaScript 4230 * context. Null values are ignored. 4231 * @param name The name used to expose the instance in JavaScript. 4232 */ 4233 public void addJavascriptInterface(Object object, String name) { 4234 checkThread(); 4235 if (object == null) { 4236 return; 4237 } 4238 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4239 arg.mObject = object; 4240 arg.mInterfaceName = name; 4241 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 4242 } 4243 4244 /** 4245 * Removes a previously added JavaScript interface with the given name. 4246 * @param interfaceName The name of the interface to remove. 4247 */ 4248 public void removeJavascriptInterface(String interfaceName) { 4249 checkThread(); 4250 if (mWebViewCore != null) { 4251 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 4252 arg.mInterfaceName = interfaceName; 4253 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 4254 } 4255 } 4256 4257 /** 4258 * Return the WebSettings object used to control the settings for this 4259 * WebView. 4260 * @return A WebSettings object that can be used to control this WebView's 4261 * settings. 4262 */ 4263 public WebSettings getSettings() { 4264 checkThread(); 4265 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 4266 } 4267 4268 /** 4269 * Return the list of currently loaded plugins. 4270 * @return The list of currently loaded plugins. 4271 * 4272 * @hide 4273 * @deprecated This was used for Gears, which has been deprecated. 4274 */ 4275 @Deprecated 4276 public static synchronized PluginList getPluginList() { 4277 checkThread(); 4278 return new PluginList(); 4279 } 4280 4281 /** 4282 * @hide 4283 * @deprecated This was used for Gears, which has been deprecated. 4284 */ 4285 @Deprecated 4286 public void refreshPlugins(boolean reloadOpenPages) { 4287 checkThread(); 4288 } 4289 4290 //------------------------------------------------------------------------- 4291 // Override View methods 4292 //------------------------------------------------------------------------- 4293 4294 @Override 4295 protected void finalize() throws Throwable { 4296 try { 4297 if (mNativeClass != 0) { 4298 mPrivateHandler.post(new Runnable() { 4299 @Override 4300 public void run() { 4301 destroy(); 4302 } 4303 }); 4304 } 4305 } finally { 4306 super.finalize(); 4307 } 4308 } 4309 4310 @Override 4311 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 4312 if (child == mTitleBar) { 4313 // When drawing the title bar, move it horizontally to always show 4314 // at the top of the WebView. 4315 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 4316 int newTop = 0; 4317 if (mTitleGravity == Gravity.NO_GRAVITY) { 4318 newTop = Math.min(0, mScrollY); 4319 } else if (mTitleGravity == Gravity.TOP) { 4320 newTop = mScrollY; 4321 } 4322 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 4323 mTitleBar.setTop(newTop); 4324 } 4325 return super.drawChild(canvas, child, drawingTime); 4326 } 4327 4328 private void drawContent(Canvas canvas, boolean drawRings) { 4329 drawCoreAndCursorRing(canvas, mBackgroundColor, 4330 mDrawCursorRing && drawRings); 4331 } 4332 4333 /** 4334 * Draw the background when beyond bounds 4335 * @param canvas Canvas to draw into 4336 */ 4337 private void drawOverScrollBackground(Canvas canvas) { 4338 if (mOverScrollBackground == null) { 4339 mOverScrollBackground = new Paint(); 4340 Bitmap bm = BitmapFactory.decodeResource( 4341 mContext.getResources(), 4342 com.android.internal.R.drawable.status_bar_background); 4343 mOverScrollBackground.setShader(new BitmapShader(bm, 4344 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 4345 mOverScrollBorder = new Paint(); 4346 mOverScrollBorder.setStyle(Paint.Style.STROKE); 4347 mOverScrollBorder.setStrokeWidth(0); 4348 mOverScrollBorder.setColor(0xffbbbbbb); 4349 } 4350 4351 int top = 0; 4352 int right = computeRealHorizontalScrollRange(); 4353 int bottom = top + computeRealVerticalScrollRange(); 4354 // first draw the background and anchor to the top of the view 4355 canvas.save(); 4356 canvas.translate(mScrollX, mScrollY); 4357 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 4358 - mScrollY, Region.Op.DIFFERENCE); 4359 canvas.drawPaint(mOverScrollBackground); 4360 canvas.restore(); 4361 // then draw the border 4362 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 4363 // next clip the region for the content 4364 canvas.clipRect(0, top, right, bottom); 4365 } 4366 4367 @Override 4368 protected void onDraw(Canvas canvas) { 4369 if (inFullScreenMode()) { 4370 return; // no need to draw anything if we aren't visible. 4371 } 4372 // if mNativeClass is 0, the WebView is either destroyed or not 4373 // initialized. In either case, just draw the background color and return 4374 if (mNativeClass == 0) { 4375 canvas.drawColor(mBackgroundColor); 4376 return; 4377 } 4378 4379 // if both mContentWidth and mContentHeight are 0, it means there is no 4380 // valid Picture passed to WebView yet. This can happen when WebView 4381 // just starts. Draw the background and return. 4382 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 4383 canvas.drawColor(mBackgroundColor); 4384 return; 4385 } 4386 4387 if (canvas.isHardwareAccelerated()) { 4388 if (mIncrementEGLContextHack == false) { 4389 mIncrementEGLContextHack = true; 4390 EGL10 egl = (EGL10) EGLContext.getEGL(); 4391 EGLDisplay eglDisplay = egl.eglGetDisplay(EGL_DEFAULT_DISPLAY); 4392 int[] version = new int[2]; 4393 egl.eglInitialize(eglDisplay, version); 4394 } 4395 mZoomManager.setHardwareAccelerated(); 4396 } 4397 4398 int saveCount = canvas.save(); 4399 if (mInOverScrollMode && !getSettings() 4400 .getUseWebViewBackgroundForOverscrollBackground()) { 4401 drawOverScrollBackground(canvas); 4402 } 4403 if (mTitleBar != null) { 4404 canvas.translate(0, getTitleHeight()); 4405 } 4406 boolean drawJavaRings = !mTouchHighlightRegion.isEmpty() 4407 && (mTouchMode == TOUCH_INIT_MODE 4408 || mTouchMode == TOUCH_SHORTPRESS_START_MODE 4409 || mTouchMode == TOUCH_SHORTPRESS_MODE 4410 || mTouchMode == TOUCH_DONE_MODE); 4411 boolean drawNativeRings = !drawJavaRings; 4412 if (sDisableNavcache) { 4413 drawNativeRings = !drawJavaRings && !isInTouchMode(); 4414 } 4415 drawContent(canvas, drawNativeRings); 4416 canvas.restoreToCount(saveCount); 4417 4418 if (AUTO_REDRAW_HACK && mAutoRedraw) { 4419 invalidate(); 4420 } 4421 mWebViewCore.signalRepaintDone(); 4422 4423 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 4424 invalidate(); 4425 } 4426 4427 // paint the highlight in the end 4428 if (drawJavaRings) { 4429 long delay = System.currentTimeMillis() - mTouchHighlightRequested; 4430 if (delay < ViewConfiguration.getTapTimeout()) { 4431 Rect r = mTouchHighlightRegion.getBounds(); 4432 postInvalidateDelayed(delay, r.left, r.top, r.right, r.bottom); 4433 } else { 4434 RegionIterator iter = new RegionIterator(mTouchHighlightRegion); 4435 Rect r = new Rect(); 4436 while (iter.next(r)) { 4437 canvas.drawRect(r, mTouchHightlightPaint); 4438 } 4439 } 4440 } 4441 if (DEBUG_TOUCH_HIGHLIGHT) { 4442 if (getSettings().getNavDump()) { 4443 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 4444 if (mTouchCrossHairColor == null) { 4445 mTouchCrossHairColor = new Paint(); 4446 mTouchCrossHairColor.setColor(Color.RED); 4447 } 4448 canvas.drawLine(mTouchHighlightX - mNavSlop, 4449 mTouchHighlightY - mNavSlop, mTouchHighlightX 4450 + mNavSlop + 1, mTouchHighlightY + mNavSlop 4451 + 1, mTouchCrossHairColor); 4452 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 4453 mTouchHighlightY - mNavSlop, mTouchHighlightX 4454 - mNavSlop, 4455 mTouchHighlightY + mNavSlop + 1, 4456 mTouchCrossHairColor); 4457 } 4458 } 4459 } 4460 } 4461 4462 private void removeTouchHighlight() { 4463 mWebViewCore.removeMessages(EventHub.HIT_TEST); 4464 mPrivateHandler.removeMessages(HIT_TEST_RESULT); 4465 setTouchHighlightRects(null); 4466 } 4467 4468 @Override 4469 public void setLayoutParams(ViewGroup.LayoutParams params) { 4470 if (params.height == LayoutParams.WRAP_CONTENT) { 4471 mWrapContent = true; 4472 } 4473 super.setLayoutParams(params); 4474 } 4475 4476 @Override 4477 public boolean performLongClick() { 4478 // performLongClick() is the result of a delayed message. If we switch 4479 // to windows overview, the WebView will be temporarily removed from the 4480 // view system. In that case, do nothing. 4481 if (getParent() == null) return false; 4482 4483 // A multi-finger gesture can look like a long press; make sure we don't take 4484 // long press actions if we're scaling. 4485 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 4486 if (detector != null && detector.isInProgress()) { 4487 return false; 4488 } 4489 4490 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 4491 // Send the click so that the textfield is in focus 4492 centerKeyPressOnTextField(); 4493 rebuildWebTextView(); 4494 } else { 4495 clearTextEntry(); 4496 } 4497 if (inEditingMode()) { 4498 // Since we just called rebuildWebTextView, the layout is not set 4499 // properly. Update it so it can correctly find the word to select. 4500 mWebTextView.ensureLayout(); 4501 // Provide a touch down event to WebTextView, which will allow it 4502 // to store the location to use in performLongClick. 4503 AbsoluteLayout.LayoutParams params 4504 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 4505 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 4506 mLastTouchTime, MotionEvent.ACTION_DOWN, 4507 mLastTouchX - params.x + mScrollX, 4508 mLastTouchY - params.y + mScrollY, 0); 4509 mWebTextView.dispatchTouchEvent(fake); 4510 return mWebTextView.performLongClick(); 4511 } 4512 if (mSelectingText) return false; // long click does nothing on selection 4513 /* if long click brings up a context menu, the super function 4514 * returns true and we're done. Otherwise, nothing happened when 4515 * the user clicked. */ 4516 if (super.performLongClick()) { 4517 return true; 4518 } 4519 /* In the case where the application hasn't already handled the long 4520 * click action, look for a word under the click. If one is found, 4521 * animate the text selection into view. 4522 * FIXME: no animation code yet */ 4523 final boolean isSelecting = selectText(); 4524 if (isSelecting) { 4525 performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); 4526 } else if (focusCandidateIsEditableText()) { 4527 mSelectCallback = new SelectActionModeCallback(); 4528 mSelectCallback.setWebView(this); 4529 mSelectCallback.setTextSelected(false); 4530 startActionMode(mSelectCallback); 4531 } 4532 return isSelecting; 4533 } 4534 4535 /** 4536 * Select the word at the last click point. 4537 * 4538 * @hide This is an implementation detail. 4539 */ 4540 public boolean selectText() { 4541 int x = viewToContentX(mLastTouchX + mScrollX); 4542 int y = viewToContentY(mLastTouchY + mScrollY); 4543 return selectText(x, y); 4544 } 4545 4546 /** 4547 * Select the word at the indicated content coordinates. 4548 */ 4549 boolean selectText(int x, int y) { 4550 if (!setUpSelect(true, x, y)) { 4551 return false; 4552 } 4553 nativeSetExtendSelection(); 4554 mDrawSelectionPointer = false; 4555 mTouchMode = TOUCH_DRAG_MODE; 4556 return true; 4557 } 4558 4559 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 4560 4561 @Override 4562 protected void onConfigurationChanged(Configuration newConfig) { 4563 mCachedOverlappingActionModeHeight = -1; 4564 if (mSelectingText && mOrientation != newConfig.orientation) { 4565 selectionDone(); 4566 } 4567 mOrientation = newConfig.orientation; 4568 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 4569 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 4570 } 4571 } 4572 4573 /** 4574 * Keep track of the Callback so we can end its ActionMode or remove its 4575 * titlebar. 4576 */ 4577 private SelectActionModeCallback mSelectCallback; 4578 4579 // These values are possible options for didUpdateWebTextViewDimensions. 4580 private static final int FULLY_ON_SCREEN = 0; 4581 private static final int INTERSECTS_SCREEN = 1; 4582 private static final int ANYWHERE = 2; 4583 4584 /** 4585 * Check to see if the focused textfield/textarea is still on screen. If it 4586 * is, update the the dimensions and location of WebTextView. Otherwise, 4587 * remove the WebTextView. Should be called when the zoom level changes. 4588 * @param intersection How to determine whether the textfield/textarea is 4589 * still on screen. 4590 * @return boolean True if the textfield/textarea is still on screen and the 4591 * dimensions/location of WebTextView have been updated. 4592 */ 4593 private boolean didUpdateWebTextViewDimensions(int intersection) { 4594 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4595 Rect vBox = contentToViewRect(contentBounds); 4596 Rect visibleRect = new Rect(); 4597 calcOurVisibleRect(visibleRect); 4598 offsetByLayerScrollPosition(vBox); 4599 // If the textfield is on screen, place the WebTextView in 4600 // its new place, accounting for our new scroll/zoom values, 4601 // and adjust its textsize. 4602 boolean onScreen; 4603 switch (intersection) { 4604 case FULLY_ON_SCREEN: 4605 onScreen = visibleRect.contains(vBox); 4606 break; 4607 case INTERSECTS_SCREEN: 4608 onScreen = Rect.intersects(visibleRect, vBox); 4609 break; 4610 case ANYWHERE: 4611 onScreen = true; 4612 break; 4613 default: 4614 throw new AssertionError( 4615 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4616 } 4617 if (onScreen) { 4618 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4619 vBox.height()); 4620 mWebTextView.updateTextSize(); 4621 updateWebTextViewPadding(); 4622 return true; 4623 } else { 4624 // The textfield is now off screen. The user probably 4625 // was not zooming to see the textfield better. Remove 4626 // the WebTextView. If the user types a key, and the 4627 // textfield is still in focus, we will reconstruct 4628 // the WebTextView and scroll it back on screen. 4629 mWebTextView.remove(); 4630 return false; 4631 } 4632 } 4633 4634 private void offsetByLayerScrollPosition(Rect box) { 4635 if ((mCurrentScrollingLayerId != 0) 4636 && (mCurrentScrollingLayerId == nativeFocusCandidateLayerId())) { 4637 box.offsetTo(box.left - mScrollingLayerRect.left, 4638 box.top - mScrollingLayerRect.top); 4639 } 4640 } 4641 4642 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4643 boolean isPictureAfterFirstLayout, boolean registerPageSwapCallback) { 4644 if (mNativeClass == 0) 4645 return; 4646 nativeSetBaseLayer(mNativeClass, layer, invalRegion, showVisualIndicator, 4647 isPictureAfterFirstLayout, registerPageSwapCallback); 4648 if (mHTML5VideoViewProxy != null) { 4649 mHTML5VideoViewProxy.setBaseLayer(layer); 4650 } 4651 } 4652 4653 int getBaseLayer() { 4654 if (mNativeClass == 0) { 4655 return 0; 4656 } 4657 return nativeGetBaseLayer(); 4658 } 4659 4660 private void onZoomAnimationStart() { 4661 // If it is in password mode, turn it off so it does not draw misplaced. 4662 if (inEditingMode()) { 4663 mWebTextView.setVisibility(INVISIBLE); 4664 } 4665 } 4666 4667 private void onZoomAnimationEnd() { 4668 // adjust the edit text view if needed 4669 if (inEditingMode() 4670 && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN)) { 4671 // If it is a password field, start drawing the WebTextView once 4672 // again. 4673 mWebTextView.setVisibility(VISIBLE); 4674 } 4675 } 4676 4677 void onFixedLengthZoomAnimationStart() { 4678 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4679 onZoomAnimationStart(); 4680 } 4681 4682 void onFixedLengthZoomAnimationEnd() { 4683 if (!mBlockWebkitViewMessages && !mSelectingText) { 4684 WebViewCore.resumeUpdatePicture(mWebViewCore); 4685 } 4686 onZoomAnimationEnd(); 4687 } 4688 4689 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4690 Paint.DITHER_FLAG | 4691 Paint.SUBPIXEL_TEXT_FLAG; 4692 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4693 Paint.DITHER_FLAG; 4694 4695 private final DrawFilter mZoomFilter = 4696 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4697 // If we need to trade better quality for speed, set mScrollFilter to null 4698 private final DrawFilter mScrollFilter = 4699 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4700 4701 private void drawCoreAndCursorRing(Canvas canvas, int color, 4702 boolean drawCursorRing) { 4703 if (mDrawHistory) { 4704 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4705 canvas.drawPicture(mHistoryPicture); 4706 return; 4707 } 4708 if (mNativeClass == 0) return; 4709 4710 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4711 boolean animateScroll = ((!mScroller.isFinished() 4712 || mVelocityTracker != null) 4713 && (mTouchMode != TOUCH_DRAG_MODE || 4714 mHeldMotionless != MOTIONLESS_TRUE)) 4715 || mDeferTouchMode == TOUCH_DRAG_MODE; 4716 if (mTouchMode == TOUCH_DRAG_MODE) { 4717 if (mHeldMotionless == MOTIONLESS_PENDING) { 4718 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4719 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4720 mHeldMotionless = MOTIONLESS_FALSE; 4721 } 4722 if (mHeldMotionless == MOTIONLESS_FALSE) { 4723 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4724 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4725 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4726 .obtainMessage(AWAKEN_SCROLL_BARS), 4727 ViewConfiguration.getScrollDefaultDelay()); 4728 mHeldMotionless = MOTIONLESS_PENDING; 4729 } 4730 } 4731 int saveCount = canvas.save(); 4732 if (animateZoom) { 4733 mZoomManager.animateZoom(canvas); 4734 } else if (!canvas.isHardwareAccelerated()) { 4735 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4736 } 4737 4738 boolean UIAnimationsRunning = false; 4739 // Currently for each draw we compute the animation values; 4740 // We may in the future decide to do that independently. 4741 if (mNativeClass != 0 && !canvas.isHardwareAccelerated() 4742 && nativeEvaluateLayersAnimations(mNativeClass)) { 4743 UIAnimationsRunning = true; 4744 // If we have unfinished (or unstarted) animations, 4745 // we ask for a repaint. We only need to do this in software 4746 // rendering (with hardware rendering we already have a different 4747 // method of requesting a repaint) 4748 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 4749 invalidate(); 4750 } 4751 4752 // decide which adornments to draw 4753 int extras = DRAW_EXTRAS_NONE; 4754 if (mFindIsUp) { 4755 extras = DRAW_EXTRAS_FIND; 4756 } else if (mSelectingText && (!USE_JAVA_TEXT_SELECTION || DEBUG_TEXT_HANDLES)) { 4757 extras = DRAW_EXTRAS_SELECTION; 4758 nativeSetSelectionPointer(mNativeClass, 4759 mDrawSelectionPointer, 4760 mZoomManager.getInvScale(), mSelectX, mSelectY - getTitleHeight()); 4761 } else if (drawCursorRing) { 4762 extras = DRAW_EXTRAS_CURSOR_RING; 4763 } 4764 if (DebugFlags.WEB_VIEW) { 4765 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4766 + " mSelectingText=" + mSelectingText 4767 + " nativePageShouldHandleShiftAndArrows()=" 4768 + nativePageShouldHandleShiftAndArrows() 4769 + " animateZoom=" + animateZoom 4770 + " extras=" + extras); 4771 } 4772 4773 calcOurContentVisibleRectF(mVisibleContentRect); 4774 if (canvas.isHardwareAccelerated()) { 4775 Rect glRectViewport = mGLViewportEmpty ? null : mGLRectViewport; 4776 Rect viewRectViewport = mGLViewportEmpty ? null : mViewRectViewport; 4777 4778 int functor = nativeGetDrawGLFunction(mNativeClass, glRectViewport, 4779 viewRectViewport, mVisibleContentRect, getScale(), extras); 4780 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4781 if (mHardwareAccelSkia != getSettings().getHardwareAccelSkiaEnabled()) { 4782 mHardwareAccelSkia = getSettings().getHardwareAccelSkiaEnabled(); 4783 nativeUseHardwareAccelSkia(mHardwareAccelSkia); 4784 } 4785 4786 } else { 4787 DrawFilter df = null; 4788 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4789 df = mZoomFilter; 4790 } else if (animateScroll) { 4791 df = mScrollFilter; 4792 } 4793 canvas.setDrawFilter(df); 4794 // XXX: Revisit splitting content. Right now it causes a 4795 // synchronization problem with layers. 4796 int content = nativeDraw(canvas, mVisibleContentRect, color, 4797 extras, false); 4798 canvas.setDrawFilter(null); 4799 if (!mBlockWebkitViewMessages && content != 0) { 4800 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4801 } 4802 } 4803 4804 canvas.restoreToCount(saveCount); 4805 if (mSelectingText && USE_JAVA_TEXT_SELECTION) { 4806 drawTextSelectionHandles(canvas); 4807 } 4808 4809 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4810 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4811 mTouchMode = TOUCH_SHORTPRESS_MODE; 4812 } 4813 } 4814 if (mFocusSizeChanged) { 4815 mFocusSizeChanged = false; 4816 // If we are zooming, this will get handled above, when the zoom 4817 // finishes. We also do not need to do this unless the WebTextView 4818 // is showing. With hardware acceleration, the pageSwapCallback() 4819 // updates the WebTextView position in sync with page swapping 4820 if (!canvas.isHardwareAccelerated() && !animateZoom && inEditingMode()) { 4821 didUpdateWebTextViewDimensions(ANYWHERE); 4822 } 4823 } 4824 } 4825 4826 private void drawTextSelectionHandles(Canvas canvas) { 4827 if (mTextSelectionPaint == null) { 4828 mTextSelectionPaint = new Paint(); 4829 mTextSelectionPaint.setColor(HIGHLIGHT_COLOR); 4830 } 4831 mTextSelectionRegion.setEmpty(); 4832 nativeGetTextSelectionRegion(mNativeClass, mTextSelectionRegion); 4833 Rect r = new Rect(); 4834 RegionIterator iter = new RegionIterator(mTextSelectionRegion); 4835 Rect clip = canvas.getClipBounds(); 4836 while (iter.next(r)) { 4837 r.set(contentToViewDimension(r.left), 4838 contentToViewDimension(r.top), 4839 contentToViewDimension(r.right), 4840 contentToViewDimension(r.bottom)); 4841 if (r.intersect(clip)) { 4842 canvas.drawRect(r, mTextSelectionPaint); 4843 } 4844 } 4845 if (mSelectHandleLeft == null) { 4846 mSelectHandleLeft = mContext.getResources().getDrawable( 4847 com.android.internal.R.drawable.text_select_handle_left); 4848 } 4849 int[] handles = new int[4]; 4850 nativeGetSelectionHandles(mNativeClass, handles); 4851 int start_x = contentToViewDimension(handles[0]); 4852 int start_y = contentToViewDimension(handles[1]); 4853 int end_x = contentToViewDimension(handles[2]); 4854 int end_y = contentToViewDimension(handles[3]); 4855 // Magic formula copied from TextView 4856 start_x -= (mSelectHandleLeft.getIntrinsicWidth() * 3) / 4; 4857 mSelectHandleLeft.setBounds(start_x, start_y, 4858 start_x + mSelectHandleLeft.getIntrinsicWidth(), 4859 start_y + mSelectHandleLeft.getIntrinsicHeight()); 4860 if (mSelectHandleRight == null) { 4861 mSelectHandleRight = mContext.getResources().getDrawable( 4862 com.android.internal.R.drawable.text_select_handle_right); 4863 } 4864 end_x -= mSelectHandleRight.getIntrinsicWidth() / 4; 4865 mSelectHandleRight.setBounds(end_x, end_y, 4866 end_x + mSelectHandleRight.getIntrinsicWidth(), 4867 end_y + mSelectHandleRight.getIntrinsicHeight()); 4868 if (DEBUG_TEXT_HANDLES) { 4869 mSelectHandleLeft.setAlpha(125); 4870 mSelectHandleRight.setAlpha(125); 4871 } 4872 mSelectHandleLeft.draw(canvas); 4873 mSelectHandleRight.draw(canvas); 4874 } 4875 4876 // draw history 4877 private boolean mDrawHistory = false; 4878 private Picture mHistoryPicture = null; 4879 private int mHistoryWidth = 0; 4880 private int mHistoryHeight = 0; 4881 4882 // Only check the flag, can be called from WebCore thread 4883 boolean drawHistory() { 4884 return mDrawHistory; 4885 } 4886 4887 int getHistoryPictureWidth() { 4888 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4889 } 4890 4891 // Should only be called in UI thread 4892 void switchOutDrawHistory() { 4893 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4894 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4895 mDrawHistory = false; 4896 mHistoryPicture = null; 4897 invalidate(); 4898 int oldScrollX = mScrollX; 4899 int oldScrollY = mScrollY; 4900 mScrollX = pinLocX(mScrollX); 4901 mScrollY = pinLocY(mScrollY); 4902 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4903 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4904 } else { 4905 sendOurVisibleRect(); 4906 } 4907 } 4908 } 4909 4910 WebViewCore.CursorData cursorData() { 4911 WebViewCore.CursorData result = cursorDataNoPosition(); 4912 Point position = nativeCursorPosition(); 4913 result.mX = position.x; 4914 result.mY = position.y; 4915 return result; 4916 } 4917 4918 WebViewCore.CursorData cursorDataNoPosition() { 4919 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4920 result.mMoveGeneration = nativeMoveGeneration(); 4921 result.mFrame = nativeCursorFramePointer(); 4922 return result; 4923 } 4924 4925 /** 4926 * Delete text from start to end in the focused textfield. If there is no 4927 * focus, or if start == end, silently fail. If start and end are out of 4928 * order, swap them. 4929 * @param start Beginning of selection to delete. 4930 * @param end End of selection to delete. 4931 */ 4932 /* package */ void deleteSelection(int start, int end) { 4933 mTextGeneration++; 4934 WebViewCore.TextSelectionData data 4935 = new WebViewCore.TextSelectionData(start, end); 4936 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4937 data); 4938 } 4939 4940 /** 4941 * Set the selection to (start, end) in the focused textfield. If start and 4942 * end are out of order, swap them. 4943 * @param start Beginning of selection. 4944 * @param end End of selection. 4945 */ 4946 /* package */ void setSelection(int start, int end) { 4947 if (mWebViewCore != null) { 4948 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4949 } 4950 } 4951 4952 @Override 4953 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4954 outAttrs.imeOptions = EditorInfo.IME_FLAG_NO_FULLSCREEN 4955 | EditorInfo.TYPE_CLASS_TEXT 4956 | EditorInfo.TYPE_TEXT_VARIATION_NORMAL; 4957 if (mInputConnection == null) { 4958 mInputConnection = new WebViewInputConnection(); 4959 } 4960 return mInputConnection; 4961 } 4962 4963 /** 4964 * Called in response to a message from webkit telling us that the soft 4965 * keyboard should be launched. 4966 */ 4967 private void displaySoftKeyboard(boolean isTextView) { 4968 InputMethodManager imm = (InputMethodManager) 4969 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4970 4971 // bring it back to the default level scale so that user can enter text 4972 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4973 if (zoom) { 4974 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4975 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4976 } 4977 if (isTextView) { 4978 rebuildWebTextView(); 4979 if (inEditingMode()) { 4980 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4981 if (zoom) { 4982 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4983 } 4984 return; 4985 } 4986 } 4987 // Used by plugins and contentEditable. 4988 // Also used if the navigation cache is out of date, and 4989 // does not recognize that a textfield is in focus. In that 4990 // case, use WebView as the targeted view. 4991 // see http://b/issue?id=2457459 4992 imm.showSoftInput(this, 0); 4993 } 4994 4995 // Called by WebKit to instruct the UI to hide the keyboard 4996 private void hideSoftKeyboard() { 4997 InputMethodManager imm = InputMethodManager.peekInstance(); 4998 if (imm != null && (imm.isActive(this) 4999 || (inEditingMode() && imm.isActive(mWebTextView)))) { 5000 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 5001 } 5002 } 5003 5004 /* 5005 * This method checks the current focus and cursor and potentially rebuilds 5006 * mWebTextView to have the appropriate properties, such as password, 5007 * multiline, and what text it contains. It also removes it if necessary. 5008 */ 5009 /* package */ void rebuildWebTextView() { 5010 // If the WebView does not have focus, do nothing until it gains focus. 5011 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 5012 return; 5013 } 5014 boolean alreadyThere = inEditingMode(); 5015 // inEditingMode can only return true if mWebTextView is non-null, 5016 // so we can safely call remove() if (alreadyThere) 5017 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 5018 if (alreadyThere) { 5019 mWebTextView.remove(); 5020 } 5021 return; 5022 } 5023 // At this point, we know we have found an input field, so go ahead 5024 // and create the WebTextView if necessary. 5025 if (mWebTextView == null) { 5026 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 5027 // Initialize our generation number. 5028 mTextGeneration = 0; 5029 } 5030 mWebTextView.updateTextSize(); 5031 updateWebTextViewPosition(); 5032 String text = nativeFocusCandidateText(); 5033 int nodePointer = nativeFocusCandidatePointer(); 5034 // This needs to be called before setType, which may call 5035 // requestFormData, and it needs to have the correct nodePointer. 5036 mWebTextView.setNodePointer(nodePointer); 5037 mWebTextView.setType(nativeFocusCandidateType()); 5038 // Gravity needs to be set after setType 5039 mWebTextView.setGravityForRtl(nativeFocusCandidateIsRtlText()); 5040 if (null == text) { 5041 if (DebugFlags.WEB_VIEW) { 5042 Log.v(LOGTAG, "rebuildWebTextView null == text"); 5043 } 5044 text = ""; 5045 } 5046 mWebTextView.setTextAndKeepSelection(text); 5047 InputMethodManager imm = InputMethodManager.peekInstance(); 5048 if (imm != null && imm.isActive(mWebTextView)) { 5049 imm.restartInput(mWebTextView); 5050 mWebTextView.clearComposingText(); 5051 } 5052 if (isFocused()) { 5053 mWebTextView.requestFocus(); 5054 } 5055 } 5056 5057 private void updateWebTextViewPosition() { 5058 Rect visibleRect = new Rect(); 5059 calcOurContentVisibleRect(visibleRect); 5060 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 5061 // should be in content coordinates. 5062 Rect bounds = nativeFocusCandidateNodeBounds(); 5063 Rect vBox = contentToViewRect(bounds); 5064 offsetByLayerScrollPosition(vBox); 5065 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 5066 if (!Rect.intersects(bounds, visibleRect)) { 5067 revealSelection(); 5068 } 5069 updateWebTextViewPadding(); 5070 } 5071 5072 /** 5073 * Update the padding of mWebTextView based on the native textfield/textarea 5074 */ 5075 void updateWebTextViewPadding() { 5076 Rect paddingRect = nativeFocusCandidatePaddingRect(); 5077 if (paddingRect != null) { 5078 // Use contentToViewDimension since these are the dimensions of 5079 // the padding. 5080 mWebTextView.setPadding( 5081 contentToViewDimension(paddingRect.left), 5082 contentToViewDimension(paddingRect.top), 5083 contentToViewDimension(paddingRect.right), 5084 contentToViewDimension(paddingRect.bottom)); 5085 } 5086 } 5087 5088 /** 5089 * Tell webkit to put the cursor on screen. 5090 */ 5091 /* package */ void revealSelection() { 5092 if (mWebViewCore != null) { 5093 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 5094 } 5095 } 5096 5097 /** 5098 * Called by WebTextView to find saved form data associated with the 5099 * textfield 5100 * @param name Name of the textfield. 5101 * @param nodePointer Pointer to the node of the textfield, so it can be 5102 * compared to the currently focused textfield when the data is 5103 * retrieved. 5104 * @param autoFillable true if WebKit has determined this field is part of 5105 * a form that can be auto filled. 5106 * @param autoComplete true if the attribute "autocomplete" is set to true 5107 * on the textfield. 5108 */ 5109 /* package */ void requestFormData(String name, int nodePointer, 5110 boolean autoFillable, boolean autoComplete) { 5111 if (mWebViewCore.getSettings().getSaveFormData()) { 5112 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 5113 update.arg1 = nodePointer; 5114 RequestFormData updater = new RequestFormData(name, getUrl(), 5115 update, autoFillable, autoComplete); 5116 Thread t = new Thread(updater); 5117 t.start(); 5118 } 5119 } 5120 5121 /** 5122 * Pass a message to find out the <label> associated with the <input> 5123 * identified by nodePointer 5124 * @param framePointer Pointer to the frame containing the <input> node 5125 * @param nodePointer Pointer to the node for which a <label> is desired. 5126 */ 5127 /* package */ void requestLabel(int framePointer, int nodePointer) { 5128 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 5129 nodePointer); 5130 } 5131 5132 /* 5133 * This class requests an Adapter for the WebTextView which shows past 5134 * entries stored in the database. It is a Runnable so that it can be done 5135 * in its own thread, without slowing down the UI. 5136 */ 5137 private class RequestFormData implements Runnable { 5138 private String mName; 5139 private String mUrl; 5140 private Message mUpdateMessage; 5141 private boolean mAutoFillable; 5142 private boolean mAutoComplete; 5143 private WebSettings mWebSettings; 5144 5145 public RequestFormData(String name, String url, Message msg, 5146 boolean autoFillable, boolean autoComplete) { 5147 mName = name; 5148 mUrl = WebTextView.urlForAutoCompleteData(url); 5149 mUpdateMessage = msg; 5150 mAutoFillable = autoFillable; 5151 mAutoComplete = autoComplete; 5152 mWebSettings = getSettings(); 5153 } 5154 5155 @Override 5156 public void run() { 5157 ArrayList<String> pastEntries = new ArrayList<String>(); 5158 5159 if (mAutoFillable) { 5160 // Note that code inside the adapter click handler in WebTextView depends 5161 // on the AutoFill item being at the top of the drop down list. If you change 5162 // the order, make sure to do it there too! 5163 if (mWebSettings != null && mWebSettings.getAutoFillProfile() != null) { 5164 pastEntries.add(getResources().getText( 5165 com.android.internal.R.string.autofill_this_form).toString() + 5166 " " + 5167 mAutoFillData.getPreviewString()); 5168 mWebTextView.setAutoFillProfileIsSet(true); 5169 } else { 5170 // There is no autofill profile set up yet, so add an option that 5171 // will invite the user to set their profile up. 5172 pastEntries.add(getResources().getText( 5173 com.android.internal.R.string.setup_autofill).toString()); 5174 mWebTextView.setAutoFillProfileIsSet(false); 5175 } 5176 } 5177 5178 if (mAutoComplete) { 5179 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 5180 } 5181 5182 if (pastEntries.size() > 0) { 5183 AutoCompleteAdapter adapter = new 5184 AutoCompleteAdapter(mContext, pastEntries); 5185 mUpdateMessage.obj = adapter; 5186 mUpdateMessage.sendToTarget(); 5187 } 5188 } 5189 } 5190 5191 /** 5192 * Dump the display tree to "/sdcard/displayTree.txt" 5193 * 5194 * @hide debug only 5195 */ 5196 public void dumpDisplayTree() { 5197 nativeDumpDisplayTree(getUrl()); 5198 } 5199 5200 /** 5201 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 5202 * "/sdcard/domTree.txt" 5203 * 5204 * @hide debug only 5205 */ 5206 public void dumpDomTree(boolean toFile) { 5207 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 5208 } 5209 5210 /** 5211 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 5212 * to "/sdcard/renderTree.txt" 5213 * 5214 * @hide debug only 5215 */ 5216 public void dumpRenderTree(boolean toFile) { 5217 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 5218 } 5219 5220 /** 5221 * Called by DRT on UI thread, need to proxy to WebCore thread. 5222 * 5223 * @hide debug only 5224 */ 5225 public void useMockDeviceOrientation() { 5226 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 5227 } 5228 5229 /** 5230 * Called by DRT on WebCore thread. 5231 * 5232 * @hide debug only 5233 */ 5234 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 5235 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 5236 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 5237 canProvideGamma, gamma); 5238 } 5239 5240 // This is used to determine long press with the center key. Does not 5241 // affect long press with the trackball/touch. 5242 private boolean mGotCenterDown = false; 5243 5244 @Override 5245 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 5246 if (mBlockWebkitViewMessages) { 5247 return false; 5248 } 5249 // send complex characters to webkit for use by JS and plugins 5250 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 5251 // pass the key to DOM 5252 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5253 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5254 // return true as DOM handles the key 5255 return true; 5256 } 5257 return false; 5258 } 5259 5260 private boolean isEnterActionKey(int keyCode) { 5261 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 5262 || keyCode == KeyEvent.KEYCODE_ENTER 5263 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 5264 } 5265 5266 @Override 5267 public boolean onKeyDown(int keyCode, KeyEvent event) { 5268 if (DebugFlags.WEB_VIEW) { 5269 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 5270 + "keyCode=" + keyCode 5271 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5272 } 5273 if (mBlockWebkitViewMessages) { 5274 return false; 5275 } 5276 5277 // don't implement accelerator keys here; defer to host application 5278 if (event.isCtrlPressed()) { 5279 return false; 5280 } 5281 5282 if (mNativeClass == 0) { 5283 return false; 5284 } 5285 5286 // do this hack up front, so it always works, regardless of touch-mode 5287 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 5288 mAutoRedraw = !mAutoRedraw; 5289 if (mAutoRedraw) { 5290 invalidate(); 5291 } 5292 return true; 5293 } 5294 5295 // Bubble up the key event if 5296 // 1. it is a system key; or 5297 // 2. the host application wants to handle it; 5298 if (event.isSystem() 5299 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5300 return false; 5301 } 5302 5303 // accessibility support 5304 if (accessibilityScriptInjected()) { 5305 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5306 // if an accessibility script is injected we delegate to it the key handling. 5307 // this script is a screen reader which is a fully fledged solution for blind 5308 // users to navigate in and interact with web pages. 5309 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5310 return true; 5311 } else { 5312 // Clean up if accessibility was disabled after loading the current URL. 5313 mAccessibilityScriptInjected = false; 5314 } 5315 } else if (mAccessibilityInjector != null) { 5316 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5317 if (mAccessibilityInjector.onKeyEvent(event)) { 5318 // if an accessibility injector is present (no JavaScript enabled or the site 5319 // opts out injecting our JavaScript screen reader) we let it decide whether 5320 // to act on and consume the event. 5321 return true; 5322 } 5323 } else { 5324 // Clean up if accessibility was disabled after loading the current URL. 5325 mAccessibilityInjector = null; 5326 } 5327 } 5328 5329 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 5330 if (event.hasNoModifiers()) { 5331 pageUp(false); 5332 return true; 5333 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5334 pageUp(true); 5335 return true; 5336 } 5337 } 5338 5339 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 5340 if (event.hasNoModifiers()) { 5341 pageDown(false); 5342 return true; 5343 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5344 pageDown(true); 5345 return true; 5346 } 5347 } 5348 5349 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 5350 pageUp(true); 5351 return true; 5352 } 5353 5354 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 5355 pageDown(true); 5356 return true; 5357 } 5358 5359 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5360 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5361 switchOutDrawHistory(); 5362 if (nativePageShouldHandleShiftAndArrows()) { 5363 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 5364 return true; 5365 } 5366 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 5367 switch (keyCode) { 5368 case KeyEvent.KEYCODE_DPAD_UP: 5369 pageUp(true); 5370 return true; 5371 case KeyEvent.KEYCODE_DPAD_DOWN: 5372 pageDown(true); 5373 return true; 5374 case KeyEvent.KEYCODE_DPAD_LEFT: 5375 nativeClearCursor(); // start next trackball movement from page edge 5376 return pinScrollTo(0, mScrollY, true, 0); 5377 case KeyEvent.KEYCODE_DPAD_RIGHT: 5378 nativeClearCursor(); // start next trackball movement from page edge 5379 return pinScrollTo(mContentWidth, mScrollY, true, 0); 5380 } 5381 } 5382 if (mSelectingText) { 5383 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 5384 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 5385 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 5386 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 5387 int multiplier = event.getRepeatCount() + 1; 5388 moveSelection(xRate * multiplier, yRate * multiplier); 5389 return true; 5390 } 5391 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 5392 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 5393 return true; 5394 } 5395 // Bubble up the key event as WebView doesn't handle it 5396 return false; 5397 } 5398 5399 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 5400 switchOutDrawHistory(); 5401 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 5402 || nativeCursorWantsKeyEvents(); 5403 if (event.getRepeatCount() == 0) { 5404 if (mSelectingText) { 5405 return true; // discard press if copy in progress 5406 } 5407 mGotCenterDown = true; 5408 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5409 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 5410 if (!wantsKeyEvents) return true; 5411 } 5412 // Bubble up the key event as WebView doesn't handle it 5413 if (!wantsKeyEvents) return false; 5414 } 5415 5416 if (getSettings().getNavDump()) { 5417 switch (keyCode) { 5418 case KeyEvent.KEYCODE_4: 5419 dumpDisplayTree(); 5420 break; 5421 case KeyEvent.KEYCODE_5: 5422 case KeyEvent.KEYCODE_6: 5423 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 5424 break; 5425 case KeyEvent.KEYCODE_7: 5426 case KeyEvent.KEYCODE_8: 5427 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 5428 break; 5429 } 5430 } 5431 5432 if (nativeCursorIsTextInput()) { 5433 // This message will put the node in focus, for the DOM's notion 5434 // of focus. 5435 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 5436 nativeCursorNodePointer()); 5437 // This will bring up the WebTextView and put it in focus, for 5438 // our view system's notion of focus 5439 rebuildWebTextView(); 5440 // Now we need to pass the event to it 5441 if (inEditingMode()) { 5442 mWebTextView.setDefaultSelection(); 5443 return mWebTextView.dispatchKeyEvent(event); 5444 } 5445 } else if (nativeHasFocusNode()) { 5446 // In this case, the cursor is not on a text input, but the focus 5447 // might be. Check it, and if so, hand over to the WebTextView. 5448 rebuildWebTextView(); 5449 if (inEditingMode()) { 5450 mWebTextView.setDefaultSelection(); 5451 return mWebTextView.dispatchKeyEvent(event); 5452 } 5453 } 5454 5455 // TODO: should we pass all the keys to DOM or check the meta tag 5456 if (nativeCursorWantsKeyEvents() || true) { 5457 // pass the key to DOM 5458 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 5459 // return true as DOM handles the key 5460 return true; 5461 } 5462 5463 // Bubble up the key event as WebView doesn't handle it 5464 return false; 5465 } 5466 5467 @Override 5468 public boolean onKeyUp(int keyCode, KeyEvent event) { 5469 if (DebugFlags.WEB_VIEW) { 5470 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 5471 + ", " + event + ", unicode=" + event.getUnicodeChar()); 5472 } 5473 if (mBlockWebkitViewMessages) { 5474 return false; 5475 } 5476 5477 if (mNativeClass == 0) { 5478 return false; 5479 } 5480 5481 // special CALL handling when cursor node's href is "tel:XXX" 5482 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 5483 String text = nativeCursorText(); 5484 if (!nativeCursorIsTextInput() && text != null 5485 && text.startsWith(SCHEME_TEL)) { 5486 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 5487 getContext().startActivity(intent); 5488 return true; 5489 } 5490 } 5491 5492 // Bubble up the key event if 5493 // 1. it is a system key; or 5494 // 2. the host application wants to handle it; 5495 if (event.isSystem() 5496 || mCallbackProxy.uiOverrideKeyEvent(event)) { 5497 return false; 5498 } 5499 5500 // accessibility support 5501 if (accessibilityScriptInjected()) { 5502 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5503 // if an accessibility script is injected we delegate to it the key handling. 5504 // this script is a screen reader which is a fully fledged solution for blind 5505 // users to navigate in and interact with web pages. 5506 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5507 return true; 5508 } else { 5509 // Clean up if accessibility was disabled after loading the current URL. 5510 mAccessibilityScriptInjected = false; 5511 } 5512 } else if (mAccessibilityInjector != null) { 5513 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 5514 if (mAccessibilityInjector.onKeyEvent(event)) { 5515 // if an accessibility injector is present (no JavaScript enabled or the site 5516 // opts out injecting our JavaScript screen reader) we let it decide whether to 5517 // act on and consume the event. 5518 return true; 5519 } 5520 } else { 5521 // Clean up if accessibility was disabled after loading the current URL. 5522 mAccessibilityInjector = null; 5523 } 5524 } 5525 5526 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 5527 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 5528 if (nativePageShouldHandleShiftAndArrows()) { 5529 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 5530 return true; 5531 } 5532 // always handle the navigation keys in the UI thread 5533 // Bubble up the key event as WebView doesn't handle it 5534 return false; 5535 } 5536 5537 if (isEnterActionKey(keyCode)) { 5538 // remove the long press message first 5539 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 5540 mGotCenterDown = false; 5541 5542 if (mSelectingText) { 5543 if (mExtendSelection) { 5544 copySelection(); 5545 selectionDone(); 5546 } else { 5547 mExtendSelection = true; 5548 nativeSetExtendSelection(); 5549 invalidate(); // draw the i-beam instead of the arrow 5550 } 5551 return true; // discard press if copy in progress 5552 } 5553 5554 // perform the single click 5555 Rect visibleRect = sendOurVisibleRect(); 5556 // Note that sendOurVisibleRect calls viewToContent, so the 5557 // coordinates should be in content coordinates. 5558 if (!nativeCursorIntersects(visibleRect)) { 5559 return false; 5560 } 5561 WebViewCore.CursorData data = cursorData(); 5562 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 5563 playSoundEffect(SoundEffectConstants.CLICK); 5564 if (nativeCursorIsTextInput()) { 5565 rebuildWebTextView(); 5566 centerKeyPressOnTextField(); 5567 if (inEditingMode()) { 5568 mWebTextView.setDefaultSelection(); 5569 } 5570 return true; 5571 } 5572 clearTextEntry(); 5573 nativeShowCursorTimed(); 5574 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 5575 return true; 5576 } 5577 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 5578 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 5579 nativeCursorNodePointer()); 5580 return true; 5581 } 5582 } 5583 5584 // TODO: should we pass all the keys to DOM or check the meta tag 5585 if (nativeCursorWantsKeyEvents() || true) { 5586 // pass the key to DOM 5587 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 5588 // return true as DOM handles the key 5589 return true; 5590 } 5591 5592 // Bubble up the key event as WebView doesn't handle it 5593 return false; 5594 } 5595 5596 /* 5597 * Enter selecting text mode, and see if CAB should be shown. 5598 * Returns true if the WebView is now in 5599 * selecting text mode (including if it was already in that mode, and this 5600 * method did nothing). 5601 */ 5602 private boolean setUpSelect(boolean selectWord, int x, int y) { 5603 if (0 == mNativeClass) return false; // client isn't initialized 5604 if (inFullScreenMode()) return false; 5605 if (mSelectingText) return true; 5606 nativeResetSelection(); 5607 if (selectWord && !nativeWordSelection(x, y)) { 5608 selectionDone(); 5609 return false; 5610 } 5611 mSelectCallback = new SelectActionModeCallback(); 5612 mSelectCallback.setWebView(this); 5613 if (startActionMode(mSelectCallback) == null) { 5614 // There is no ActionMode, so do not allow the user to modify a 5615 // selection. 5616 selectionDone(); 5617 return false; 5618 } 5619 mExtendSelection = false; 5620 mSelectingText = mDrawSelectionPointer = true; 5621 if (DEBUG_TEXT_HANDLES) { 5622 // Debugging text handles requires running in software mode 5623 setLayerType(LAYER_TYPE_SOFTWARE, null); 5624 } 5625 // don't let the picture change during text selection 5626 WebViewCore.pauseUpdatePicture(mWebViewCore); 5627 if (nativeHasCursorNode()) { 5628 Rect rect = nativeCursorNodeBounds(); 5629 mSelectX = contentToViewX(rect.left); 5630 mSelectY = contentToViewY(rect.top); 5631 } else if (mLastTouchY > getVisibleTitleHeightImpl()) { 5632 mSelectX = mScrollX + mLastTouchX; 5633 mSelectY = mScrollY + mLastTouchY; 5634 } else { 5635 mSelectX = mScrollX + getViewWidth() / 2; 5636 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 5637 } 5638 nativeHideCursor(); 5639 mMinAutoScrollX = 0; 5640 mMaxAutoScrollX = getViewWidth(); 5641 mMinAutoScrollY = 0; 5642 mMaxAutoScrollY = getViewHeightWithTitle(); 5643 mCurrentScrollingLayerId = nativeScrollableLayer(viewToContentX(mSelectX), 5644 viewToContentY(mSelectY), mScrollingLayerRect, 5645 mScrollingLayerBounds); 5646 if (mCurrentScrollingLayerId != 0) { 5647 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 5648 mMinAutoScrollX = Math.max(mMinAutoScrollX, 5649 contentToViewX(mScrollingLayerBounds.left)); 5650 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 5651 contentToViewX(mScrollingLayerBounds.right)); 5652 } 5653 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 5654 mMinAutoScrollY = Math.max(mMinAutoScrollY, 5655 contentToViewY(mScrollingLayerBounds.top)); 5656 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 5657 contentToViewY(mScrollingLayerBounds.bottom)); 5658 } 5659 } 5660 mMinAutoScrollX += SELECT_SCROLL; 5661 mMaxAutoScrollX -= SELECT_SCROLL; 5662 mMinAutoScrollY += SELECT_SCROLL; 5663 mMaxAutoScrollY -= SELECT_SCROLL; 5664 return true; 5665 } 5666 5667 /** 5668 * Use this method to put the WebView into text selection mode. 5669 * Do not rely on this functionality; it will be deprecated in the future. 5670 * @deprecated This method is now obsolete. 5671 */ 5672 @Deprecated 5673 public void emulateShiftHeld() { 5674 checkThread(); 5675 setUpSelect(false, 0, 0); 5676 } 5677 5678 /** 5679 * Select all of the text in this WebView. 5680 * 5681 * @hide This is an implementation detail. 5682 */ 5683 public void selectAll() { 5684 if (0 == mNativeClass) return; // client isn't initialized 5685 if (inFullScreenMode()) return; 5686 if (!mSelectingText) { 5687 // retrieve a point somewhere within the text 5688 Point select = nativeSelectableText(); 5689 if (!selectText(select.x, select.y)) return; 5690 } 5691 nativeSelectAll(); 5692 mDrawSelectionPointer = false; 5693 mExtendSelection = true; 5694 invalidate(); 5695 } 5696 5697 /** 5698 * Called when the selection has been removed. 5699 */ 5700 void selectionDone() { 5701 if (mSelectingText) { 5702 mSelectingText = false; 5703 if (DEBUG_TEXT_HANDLES) { 5704 // Debugging text handles required running in software mode, set 5705 // back to default now 5706 setLayerType(LAYER_TYPE_NONE, null); 5707 } 5708 // finish is idempotent, so this is fine even if selectionDone was 5709 // called by mSelectCallback.onDestroyActionMode 5710 mSelectCallback.finish(); 5711 mSelectCallback = null; 5712 WebViewCore.resumePriority(); 5713 WebViewCore.resumeUpdatePicture(mWebViewCore); 5714 invalidate(); // redraw without selection 5715 mAutoScrollX = 0; 5716 mAutoScrollY = 0; 5717 mSentAutoScrollMessage = false; 5718 } 5719 } 5720 5721 /** 5722 * Copy the selection to the clipboard 5723 * 5724 * @hide This is an implementation detail. 5725 */ 5726 public boolean copySelection() { 5727 boolean copiedSomething = false; 5728 String selection = getSelection(); 5729 if (selection != null && selection != "") { 5730 if (DebugFlags.WEB_VIEW) { 5731 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5732 } 5733 Toast.makeText(mContext 5734 , com.android.internal.R.string.text_copied 5735 , Toast.LENGTH_SHORT).show(); 5736 copiedSomething = true; 5737 ClipboardManager cm = (ClipboardManager)getContext() 5738 .getSystemService(Context.CLIPBOARD_SERVICE); 5739 cm.setText(selection); 5740 int[] handles = new int[4]; 5741 nativeGetSelectionHandles(mNativeClass, handles); 5742 mWebViewCore.sendMessage(EventHub.COPY_TEXT, handles); 5743 } 5744 invalidate(); // remove selection region and pointer 5745 return copiedSomething; 5746 } 5747 5748 /** 5749 * Cut the selected text into the clipboard 5750 * 5751 * @hide This is an implementation detail 5752 */ 5753 public void cutSelection() { 5754 copySelection(); 5755 int[] handles = new int[4]; 5756 nativeGetSelectionHandles(mNativeClass, handles); 5757 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5758 } 5759 5760 /** 5761 * Paste text from the clipboard to the cursor position. 5762 * 5763 * @hide This is an implementation detail 5764 */ 5765 public void pasteFromClipboard() { 5766 ClipboardManager cm = (ClipboardManager)getContext() 5767 .getSystemService(Context.CLIPBOARD_SERVICE); 5768 ClipData clipData = cm.getPrimaryClip(); 5769 if (clipData != null) { 5770 ClipData.Item clipItem = clipData.getItemAt(0); 5771 CharSequence pasteText = clipItem.getText(); 5772 if (pasteText != null) { 5773 int[] handles = new int[4]; 5774 nativeGetSelectionHandles(mNativeClass, handles); 5775 mWebViewCore.sendMessage(EventHub.DELETE_TEXT, handles); 5776 mWebViewCore.sendMessage(EventHub.INSERT_TEXT, 5777 pasteText.toString()); 5778 } 5779 } 5780 } 5781 5782 /** 5783 * @hide This is an implementation detail. 5784 */ 5785 public SearchBox getSearchBox() { 5786 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5787 return null; 5788 } 5789 return mWebViewCore.getBrowserFrame().getSearchBox(); 5790 } 5791 5792 /** 5793 * Returns the currently highlighted text as a string. 5794 */ 5795 String getSelection() { 5796 if (mNativeClass == 0) return ""; 5797 return nativeGetSelection(); 5798 } 5799 5800 @Override 5801 protected void onAttachedToWindow() { 5802 super.onAttachedToWindow(); 5803 if (hasWindowFocus()) setActive(true); 5804 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5805 if (mGlobalLayoutListener == null) { 5806 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5807 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5808 } 5809 if (mScrollChangedListener == null) { 5810 mScrollChangedListener = new InnerScrollChangedListener(); 5811 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5812 } 5813 5814 addAccessibilityApisToJavaScript(); 5815 5816 mTouchEventQueue.reset(); 5817 } 5818 5819 @Override 5820 protected void onDetachedFromWindow() { 5821 clearHelpers(); 5822 mZoomManager.dismissZoomPicker(); 5823 if (hasWindowFocus()) setActive(false); 5824 5825 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5826 if (mGlobalLayoutListener != null) { 5827 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5828 mGlobalLayoutListener = null; 5829 } 5830 if (mScrollChangedListener != null) { 5831 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5832 mScrollChangedListener = null; 5833 } 5834 5835 removeAccessibilityApisFromJavaScript(); 5836 5837 super.onDetachedFromWindow(); 5838 } 5839 5840 @Override 5841 protected void onVisibilityChanged(View changedView, int visibility) { 5842 super.onVisibilityChanged(changedView, visibility); 5843 // The zoomManager may be null if the webview is created from XML that 5844 // specifies the view's visibility param as not visible (see http://b/2794841) 5845 if (visibility != View.VISIBLE && mZoomManager != null) { 5846 mZoomManager.dismissZoomPicker(); 5847 } 5848 updateDrawingState(); 5849 } 5850 5851 /** 5852 * @deprecated WebView no longer needs to implement 5853 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5854 */ 5855 @Override 5856 // Cannot add @hide as this can always be accessed via the interface. 5857 @Deprecated 5858 public void onChildViewAdded(View parent, View child) {} 5859 5860 /** 5861 * @deprecated WebView no longer needs to implement 5862 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5863 */ 5864 @Override 5865 // Cannot add @hide as this can always be accessed via the interface. 5866 @Deprecated 5867 public void onChildViewRemoved(View p, View child) {} 5868 5869 /** 5870 * @deprecated WebView should not have implemented 5871 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5872 */ 5873 @Override 5874 // Cannot add @hide as this can always be accessed via the interface. 5875 @Deprecated 5876 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5877 } 5878 5879 void setActive(boolean active) { 5880 if (active) { 5881 if (hasFocus()) { 5882 // If our window regained focus, and we have focus, then begin 5883 // drawing the cursor ring 5884 mDrawCursorRing = !inEditingMode(); 5885 setFocusControllerActive(true); 5886 } else { 5887 mDrawCursorRing = false; 5888 if (!inEditingMode()) { 5889 // If our window gained focus, but we do not have it, do not 5890 // draw the cursor ring. 5891 setFocusControllerActive(false); 5892 } 5893 // We do not call recordButtons here because we assume 5894 // that when we lost focus, or window focus, it got called with 5895 // false for the first parameter 5896 } 5897 } else { 5898 if (!mZoomManager.isZoomPickerVisible()) { 5899 /* 5900 * The external zoom controls come in their own window, so our 5901 * window loses focus. Our policy is to not draw the cursor ring 5902 * if our window is not focused, but this is an exception since 5903 * the user can still navigate the web page with the zoom 5904 * controls showing. 5905 */ 5906 mDrawCursorRing = false; 5907 } 5908 mKeysPressed.clear(); 5909 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5910 mTouchMode = TOUCH_DONE_MODE; 5911 setFocusControllerActive(false); 5912 } 5913 invalidate(); 5914 } 5915 5916 // To avoid drawing the cursor ring, and remove the TextView when our window 5917 // loses focus. 5918 @Override 5919 public void onWindowFocusChanged(boolean hasWindowFocus) { 5920 setActive(hasWindowFocus); 5921 if (hasWindowFocus) { 5922 JWebCoreJavaBridge.setActiveWebView(this); 5923 if (mPictureUpdatePausedForFocusChange) { 5924 WebViewCore.resumeUpdatePicture(mWebViewCore); 5925 mPictureUpdatePausedForFocusChange = false; 5926 } 5927 } else { 5928 JWebCoreJavaBridge.removeActiveWebView(this); 5929 final WebSettings settings = getSettings(); 5930 if (settings != null && settings.enableSmoothTransition() && 5931 mWebViewCore != null && !WebViewCore.isUpdatePicturePaused(mWebViewCore)) { 5932 WebViewCore.pauseUpdatePicture(mWebViewCore); 5933 mPictureUpdatePausedForFocusChange = true; 5934 } 5935 } 5936 super.onWindowFocusChanged(hasWindowFocus); 5937 } 5938 5939 /* 5940 * Pass a message to WebCore Thread, telling the WebCore::Page's 5941 * FocusController to be "inactive" so that it will 5942 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5943 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5944 */ 5945 /* package */ void setFocusControllerActive(boolean active) { 5946 if (mWebViewCore == null) return; 5947 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5948 // Need to send this message after the document regains focus. 5949 if (active && mListBoxMessage != null) { 5950 mWebViewCore.sendMessage(mListBoxMessage); 5951 mListBoxMessage = null; 5952 } 5953 } 5954 5955 @Override 5956 protected void onFocusChanged(boolean focused, int direction, 5957 Rect previouslyFocusedRect) { 5958 if (DebugFlags.WEB_VIEW) { 5959 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5960 } 5961 if (focused) { 5962 // When we regain focus, if we have window focus, resume drawing 5963 // the cursor ring 5964 if (hasWindowFocus()) { 5965 mDrawCursorRing = !inEditingMode(); 5966 setFocusControllerActive(true); 5967 //} else { 5968 // The WebView has gained focus while we do not have 5969 // windowfocus. When our window lost focus, we should have 5970 // called recordButtons(false...) 5971 } 5972 } else { 5973 // When we lost focus, unless focus went to the TextView (which is 5974 // true if we are in editing mode), stop drawing the cursor ring. 5975 mDrawCursorRing = false; 5976 if (!inEditingMode()) { 5977 setFocusControllerActive(false); 5978 } 5979 mKeysPressed.clear(); 5980 } 5981 5982 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5983 } 5984 5985 void setGLRectViewport() { 5986 // Use the getGlobalVisibleRect() to get the intersection among the parents 5987 // visible == false means we're clipped - send a null rect down to indicate that 5988 // we should not draw 5989 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5990 if (visible) { 5991 // Then need to invert the Y axis, just for GL 5992 View rootView = getRootView(); 5993 int rootViewHeight = rootView.getHeight(); 5994 mViewRectViewport.set(mGLRectViewport); 5995 int savedWebViewBottom = mGLRectViewport.bottom; 5996 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeightImpl(); 5997 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5998 mGLViewportEmpty = false; 5999 } else { 6000 mGLViewportEmpty = true; 6001 } 6002 calcOurContentVisibleRectF(mVisibleContentRect); 6003 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 6004 mGLViewportEmpty ? null : mViewRectViewport, 6005 mVisibleContentRect); 6006 } 6007 6008 /** 6009 * @hide 6010 */ 6011 @Override 6012 protected boolean setFrame(int left, int top, int right, int bottom) { 6013 boolean changed = super.setFrame(left, top, right, bottom); 6014 if (!changed && mHeightCanMeasure) { 6015 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 6016 // in WebViewCore after we get the first layout. We do call 6017 // requestLayout() when we get contentSizeChanged(). But the View 6018 // system won't call onSizeChanged if the dimension is not changed. 6019 // In this case, we need to call sendViewSizeZoom() explicitly to 6020 // notify the WebKit about the new dimensions. 6021 sendViewSizeZoom(false); 6022 } 6023 setGLRectViewport(); 6024 return changed; 6025 } 6026 6027 @Override 6028 protected void onSizeChanged(int w, int h, int ow, int oh) { 6029 super.onSizeChanged(w, h, ow, oh); 6030 6031 // adjust the max viewport width depending on the view dimensions. This 6032 // is to ensure the scaling is not going insane. So do not shrink it if 6033 // the view size is temporarily smaller, e.g. when soft keyboard is up. 6034 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 6035 if (newMaxViewportWidth > sMaxViewportWidth) { 6036 sMaxViewportWidth = newMaxViewportWidth; 6037 } 6038 6039 mZoomManager.onSizeChanged(w, h, ow, oh); 6040 6041 if (mLoadedPicture != null && mDelaySetPicture == null) { 6042 // Size changes normally result in a new picture 6043 // Re-set the loaded picture to simulate that 6044 // However, do not update the base layer as that hasn't changed 6045 setNewPicture(mLoadedPicture, false); 6046 } 6047 } 6048 6049 @Override 6050 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 6051 super.onScrollChanged(l, t, oldl, oldt); 6052 if (!mInOverScrollMode) { 6053 sendOurVisibleRect(); 6054 // update WebKit if visible title bar height changed. The logic is same 6055 // as getVisibleTitleHeightImpl. 6056 int titleHeight = getTitleHeight(); 6057 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 6058 sendViewSizeZoom(false); 6059 } 6060 } 6061 } 6062 6063 @Override 6064 public boolean dispatchKeyEvent(KeyEvent event) { 6065 switch (event.getAction()) { 6066 case KeyEvent.ACTION_DOWN: 6067 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 6068 break; 6069 case KeyEvent.ACTION_MULTIPLE: 6070 // Always accept the action. 6071 break; 6072 case KeyEvent.ACTION_UP: 6073 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 6074 if (location == -1) { 6075 // We did not receive the key down for this key, so do not 6076 // handle the key up. 6077 return false; 6078 } else { 6079 // We did receive the key down. Handle the key up, and 6080 // remove it from our pressed keys. 6081 mKeysPressed.remove(location); 6082 } 6083 break; 6084 default: 6085 // Accept the action. This should not happen, unless a new 6086 // action is added to KeyEvent. 6087 break; 6088 } 6089 if (inEditingMode() && mWebTextView.isFocused()) { 6090 // Ensure that the WebTextView gets the event, even if it does 6091 // not currently have a bounds. 6092 return mWebTextView.dispatchKeyEvent(event); 6093 } else { 6094 return super.dispatchKeyEvent(event); 6095 } 6096 } 6097 6098 /* 6099 * Here is the snap align logic: 6100 * 1. If it starts nearly horizontally or vertically, snap align; 6101 * 2. If there is a dramitic direction change, let it go; 6102 * 6103 * Adjustable parameters. Angle is the radians on a unit circle, limited 6104 * to quadrant 1. Values range from 0f (horizontal) to PI/2 (vertical) 6105 */ 6106 private static final float HSLOPE_TO_START_SNAP = .25f; 6107 private static final float HSLOPE_TO_BREAK_SNAP = .4f; 6108 private static final float VSLOPE_TO_START_SNAP = 1.25f; 6109 private static final float VSLOPE_TO_BREAK_SNAP = .95f; 6110 /* 6111 * These values are used to influence the average angle when entering 6112 * snap mode. If is is the first movement entering snap, we set the average 6113 * to the appropriate ideal. If the user is entering into snap after the 6114 * first movement, then we average the average angle with these values. 6115 */ 6116 private static final float ANGLE_VERT = 2f; 6117 private static final float ANGLE_HORIZ = 0f; 6118 /* 6119 * The modified moving average weight. 6120 * Formula: MAV[t]=MAV[t-1] + (P[t]-MAV[t-1])/n 6121 */ 6122 private static final float MMA_WEIGHT_N = 5; 6123 6124 private boolean hitFocusedPlugin(int contentX, int contentY) { 6125 if (DebugFlags.WEB_VIEW) { 6126 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 6127 Rect r = nativeFocusNodeBounds(); 6128 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 6129 + ", " + r.right + ", " + r.bottom + ")"); 6130 } 6131 return nativeFocusIsPlugin() 6132 && nativeFocusNodeBounds().contains(contentX, contentY); 6133 } 6134 6135 private boolean shouldForwardTouchEvent() { 6136 if (mFullScreenHolder != null) return true; 6137 if (mBlockWebkitViewMessages) return false; 6138 return mForwardTouchEvents 6139 && !mSelectingText 6140 && mPreventDefault != PREVENT_DEFAULT_IGNORE 6141 && mPreventDefault != PREVENT_DEFAULT_NO; 6142 } 6143 6144 private boolean inFullScreenMode() { 6145 return mFullScreenHolder != null; 6146 } 6147 6148 private void dismissFullScreenMode() { 6149 if (inFullScreenMode()) { 6150 mFullScreenHolder.hide(); 6151 mFullScreenHolder = null; 6152 invalidate(); 6153 } 6154 } 6155 6156 void onPinchToZoomAnimationStart() { 6157 // cancel the single touch handling 6158 cancelTouch(); 6159 onZoomAnimationStart(); 6160 } 6161 6162 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 6163 onZoomAnimationEnd(); 6164 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 6165 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 6166 // as it may trigger the unwanted fling. 6167 mTouchMode = TOUCH_PINCH_DRAG; 6168 mConfirmMove = true; 6169 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 6170 } 6171 6172 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 6173 // layer is found. 6174 private void startScrollingLayer(float x, float y) { 6175 int contentX = viewToContentX((int) x + mScrollX); 6176 int contentY = viewToContentY((int) y + mScrollY); 6177 mCurrentScrollingLayerId = nativeScrollableLayer(contentX, contentY, 6178 mScrollingLayerRect, mScrollingLayerBounds); 6179 if (mCurrentScrollingLayerId != 0) { 6180 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6181 } 6182 } 6183 6184 // 1/(density * density) used to compute the distance between points. 6185 // Computed in init(). 6186 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 6187 6188 // The distance between two points reported in onTouchEvent scaled by the 6189 // density of the screen. 6190 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 6191 6192 @Override 6193 public boolean onHoverEvent(MotionEvent event) { 6194 if (mNativeClass == 0) { 6195 return false; 6196 } 6197 WebViewCore.CursorData data = cursorDataNoPosition(); 6198 data.mX = viewToContentX((int) event.getX() + mScrollX); 6199 data.mY = viewToContentY((int) event.getY() + mScrollY); 6200 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 6201 return true; 6202 } 6203 6204 @Override 6205 public boolean onTouchEvent(MotionEvent ev) { 6206 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 6207 return false; 6208 } 6209 6210 if (DebugFlags.WEB_VIEW) { 6211 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 6212 + " mTouchMode=" + mTouchMode 6213 + " numPointers=" + ev.getPointerCount()); 6214 } 6215 6216 // If WebKit wasn't interested in this multitouch gesture, enqueue 6217 // the event for handling directly rather than making the round trip 6218 // to WebKit and back. 6219 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 6220 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 6221 } else { 6222 mTouchEventQueue.enqueueTouchEvent(ev); 6223 } 6224 6225 // Since all events are handled asynchronously, we always want the gesture stream. 6226 return true; 6227 } 6228 6229 private float calculateDragAngle(int dx, int dy) { 6230 dx = Math.abs(dx); 6231 dy = Math.abs(dy); 6232 return (float) Math.atan2(dy, dx); 6233 } 6234 6235 /* 6236 * Common code for single touch and multi-touch. 6237 * (x, y) denotes current focus point, which is the touch point for single touch 6238 * and the middle point for multi-touch. 6239 */ 6240 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 6241 long eventTime = ev.getEventTime(); 6242 6243 // Due to the touch screen edge effect, a touch closer to the edge 6244 // always snapped to the edge. As getViewWidth() can be different from 6245 // getWidth() due to the scrollbar, adjusting the point to match 6246 // getViewWidth(). Same applied to the height. 6247 x = Math.min(x, getViewWidth() - 1); 6248 y = Math.min(y, getViewHeightWithTitle() - 1); 6249 6250 int deltaX = mLastTouchX - x; 6251 int deltaY = mLastTouchY - y; 6252 int contentX = viewToContentX(x + mScrollX); 6253 int contentY = viewToContentY(y + mScrollY); 6254 6255 switch (action) { 6256 case MotionEvent.ACTION_DOWN: { 6257 mPreventDefault = PREVENT_DEFAULT_NO; 6258 mConfirmMove = false; 6259 mInitialHitTestResult = null; 6260 if (!mScroller.isFinished()) { 6261 // stop the current scroll animation, but if this is 6262 // the start of a fling, allow it to add to the current 6263 // fling's velocity 6264 mScroller.abortAnimation(); 6265 mTouchMode = TOUCH_DRAG_START_MODE; 6266 mConfirmMove = true; 6267 nativeSetIsScrolling(false); 6268 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 6269 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 6270 if (sDisableNavcache) { 6271 removeTouchHighlight(); 6272 } 6273 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 6274 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 6275 } else { 6276 // commit the short press action for the previous tap 6277 doShortPress(); 6278 mTouchMode = TOUCH_INIT_MODE; 6279 mDeferTouchProcess = !mBlockWebkitViewMessages 6280 && (!inFullScreenMode() && mForwardTouchEvents) 6281 ? hitFocusedPlugin(contentX, contentY) 6282 : false; 6283 } 6284 } else { // the normal case 6285 mTouchMode = TOUCH_INIT_MODE; 6286 mDeferTouchProcess = !mBlockWebkitViewMessages 6287 && (!inFullScreenMode() && mForwardTouchEvents) 6288 ? hitFocusedPlugin(contentX, contentY) 6289 : false; 6290 if (!mBlockWebkitViewMessages) { 6291 mWebViewCore.sendMessage( 6292 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 6293 } 6294 if (sDisableNavcache) { 6295 TouchHighlightData data = new TouchHighlightData(); 6296 data.mX = contentX; 6297 data.mY = contentY; 6298 data.mNativeLayerRect = new Rect(); 6299 data.mNativeLayer = nativeScrollableLayer( 6300 contentX, contentY, data.mNativeLayerRect, null); 6301 data.mSlop = viewToContentDimension(mNavSlop); 6302 mTouchHighlightRegion.setEmpty(); 6303 if (!mBlockWebkitViewMessages) { 6304 mTouchHighlightRequested = System.currentTimeMillis(); 6305 mWebViewCore.sendMessageAtFrontOfQueue( 6306 EventHub.HIT_TEST, data); 6307 } 6308 if (DEBUG_TOUCH_HIGHLIGHT) { 6309 if (getSettings().getNavDump()) { 6310 mTouchHighlightX = x + mScrollX; 6311 mTouchHighlightY = y + mScrollY; 6312 mPrivateHandler.postDelayed(new Runnable() { 6313 @Override 6314 public void run() { 6315 mTouchHighlightX = mTouchHighlightY = 0; 6316 invalidate(); 6317 } 6318 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 6319 } 6320 } 6321 } 6322 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 6323 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 6324 (eventTime - mLastTouchUpTime), eventTime); 6325 } 6326 if (mSelectingText) { 6327 mDrawSelectionPointer = false; 6328 mSelectionStarted = nativeStartSelection(contentX, contentY); 6329 if (DebugFlags.WEB_VIEW) { 6330 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 6331 } 6332 invalidate(); 6333 } 6334 } 6335 // Trigger the link 6336 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 6337 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 6338 mPrivateHandler.sendEmptyMessageDelayed( 6339 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 6340 mPrivateHandler.sendEmptyMessageDelayed( 6341 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 6342 if (inFullScreenMode() || mDeferTouchProcess) { 6343 mPreventDefault = PREVENT_DEFAULT_YES; 6344 } else if (!mBlockWebkitViewMessages && mForwardTouchEvents) { 6345 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 6346 } else { 6347 mPreventDefault = PREVENT_DEFAULT_NO; 6348 } 6349 // pass the touch events from UI thread to WebCore thread 6350 if (shouldForwardTouchEvent()) { 6351 TouchEventData ted = new TouchEventData(); 6352 ted.mAction = action; 6353 ted.mIds = new int[1]; 6354 ted.mIds[0] = ev.getPointerId(0); 6355 ted.mPoints = new Point[1]; 6356 ted.mPoints[0] = new Point(contentX, contentY); 6357 ted.mPointsInView = new Point[1]; 6358 ted.mPointsInView[0] = new Point(x, y); 6359 ted.mMetaState = ev.getMetaState(); 6360 ted.mReprocess = mDeferTouchProcess; 6361 ted.mNativeLayer = nativeScrollableLayer( 6362 contentX, contentY, ted.mNativeLayerRect, null); 6363 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6364 mTouchEventQueue.preQueueTouchEventData(ted); 6365 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6366 if (mDeferTouchProcess) { 6367 // still needs to set them for compute deltaX/Y 6368 mLastTouchX = x; 6369 mLastTouchY = y; 6370 break; 6371 } 6372 if (!inFullScreenMode()) { 6373 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 6374 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6375 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6376 action, 0), TAP_TIMEOUT); 6377 } 6378 } 6379 } 6380 startTouch(x, y, eventTime); 6381 break; 6382 } 6383 case MotionEvent.ACTION_MOVE: { 6384 boolean firstMove = false; 6385 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 6386 >= mTouchSlopSquare) { 6387 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6388 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6389 mConfirmMove = true; 6390 firstMove = true; 6391 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 6392 mTouchMode = TOUCH_INIT_MODE; 6393 } 6394 if (sDisableNavcache) { 6395 removeTouchHighlight(); 6396 } 6397 } 6398 // pass the touch events from UI thread to WebCore thread 6399 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 6400 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 6401 TouchEventData ted = new TouchEventData(); 6402 ted.mAction = action; 6403 ted.mIds = new int[1]; 6404 ted.mIds[0] = ev.getPointerId(0); 6405 ted.mPoints = new Point[1]; 6406 ted.mPoints[0] = new Point(contentX, contentY); 6407 ted.mPointsInView = new Point[1]; 6408 ted.mPointsInView[0] = new Point(x, y); 6409 ted.mMetaState = ev.getMetaState(); 6410 ted.mReprocess = mDeferTouchProcess; 6411 ted.mNativeLayer = mCurrentScrollingLayerId; 6412 ted.mNativeLayerRect.set(mScrollingLayerRect); 6413 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6414 mTouchEventQueue.preQueueTouchEventData(ted); 6415 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6416 mLastSentTouchTime = eventTime; 6417 if (mDeferTouchProcess) { 6418 break; 6419 } 6420 if (firstMove && !inFullScreenMode()) { 6421 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6422 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 6423 action, 0), TAP_TIMEOUT); 6424 } 6425 } 6426 if (mTouchMode == TOUCH_DONE_MODE 6427 || mPreventDefault == PREVENT_DEFAULT_YES) { 6428 // no dragging during scroll zoom animation, or when prevent 6429 // default is yes 6430 break; 6431 } 6432 if (mVelocityTracker == null) { 6433 Log.e(LOGTAG, "Got null mVelocityTracker when " 6434 + "mPreventDefault = " + mPreventDefault 6435 + " mDeferTouchProcess = " + mDeferTouchProcess 6436 + " mTouchMode = " + mTouchMode); 6437 } else { 6438 mVelocityTracker.addMovement(ev); 6439 } 6440 if (mSelectingText && mSelectionStarted) { 6441 if (DebugFlags.WEB_VIEW) { 6442 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 6443 } 6444 ViewParent parent = getParent(); 6445 if (parent != null) { 6446 parent.requestDisallowInterceptTouchEvent(true); 6447 } 6448 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 6449 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 6450 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 6451 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 6452 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 6453 && !mSentAutoScrollMessage) { 6454 mSentAutoScrollMessage = true; 6455 mPrivateHandler.sendEmptyMessageDelayed( 6456 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 6457 } 6458 if (deltaX != 0 || deltaY != 0) { 6459 nativeExtendSelection(contentX, contentY); 6460 invalidate(); 6461 } 6462 break; 6463 } 6464 6465 if (mTouchMode != TOUCH_DRAG_MODE && 6466 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6467 6468 if (!mConfirmMove) { 6469 break; 6470 } 6471 6472 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 6473 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 6474 // track mLastTouchTime as we may need to do fling at 6475 // ACTION_UP 6476 mLastTouchTime = eventTime; 6477 break; 6478 } 6479 6480 // Only lock dragging to one axis if we don't have a scale in progress. 6481 // Scaling implies free-roaming movement. Note this is only ever a question 6482 // if mZoomManager.supportsPanDuringZoom() is true. 6483 final ScaleGestureDetector detector = 6484 mZoomManager.getMultiTouchGestureDetector(); 6485 mAverageAngle = calculateDragAngle(deltaX, deltaY); 6486 if (detector == null || !detector.isInProgress()) { 6487 // if it starts nearly horizontal or vertical, enforce it 6488 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6489 mSnapScrollMode = SNAP_X; 6490 mSnapPositive = deltaX > 0; 6491 mAverageAngle = ANGLE_HORIZ; 6492 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6493 mSnapScrollMode = SNAP_Y; 6494 mSnapPositive = deltaY > 0; 6495 mAverageAngle = ANGLE_VERT; 6496 } 6497 } 6498 6499 mTouchMode = TOUCH_DRAG_MODE; 6500 mLastTouchX = x; 6501 mLastTouchY = y; 6502 deltaX = 0; 6503 deltaY = 0; 6504 6505 startScrollingLayer(x, y); 6506 startDrag(); 6507 } 6508 6509 // do pan 6510 boolean done = false; 6511 boolean keepScrollBarsVisible = false; 6512 if (deltaX == 0 && deltaY == 0) { 6513 keepScrollBarsVisible = done = true; 6514 } else { 6515 mAverageAngle += 6516 (calculateDragAngle(deltaX, deltaY) - mAverageAngle) 6517 / MMA_WEIGHT_N; 6518 if (mSnapScrollMode != SNAP_NONE) { 6519 if (mSnapScrollMode == SNAP_Y) { 6520 // radical change means getting out of snap mode 6521 if (mAverageAngle < VSLOPE_TO_BREAK_SNAP) { 6522 mSnapScrollMode = SNAP_NONE; 6523 } 6524 } 6525 if (mSnapScrollMode == SNAP_X) { 6526 // radical change means getting out of snap mode 6527 if (mAverageAngle > HSLOPE_TO_BREAK_SNAP) { 6528 mSnapScrollMode = SNAP_NONE; 6529 } 6530 } 6531 } else { 6532 if (mAverageAngle < HSLOPE_TO_START_SNAP) { 6533 mSnapScrollMode = SNAP_X; 6534 mSnapPositive = deltaX > 0; 6535 mAverageAngle = (mAverageAngle + ANGLE_HORIZ) / 2; 6536 } else if (mAverageAngle > VSLOPE_TO_START_SNAP) { 6537 mSnapScrollMode = SNAP_Y; 6538 mSnapPositive = deltaY > 0; 6539 mAverageAngle = (mAverageAngle + ANGLE_VERT) / 2; 6540 } 6541 } 6542 if (mSnapScrollMode != SNAP_NONE) { 6543 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6544 deltaY = 0; 6545 } else { 6546 deltaX = 0; 6547 } 6548 } 6549 mLastTouchX = x; 6550 mLastTouchY = y; 6551 6552 if (deltaX * deltaX + deltaY * deltaY > mTouchSlopSquare) { 6553 mHeldMotionless = MOTIONLESS_FALSE; 6554 nativeSetIsScrolling(true); 6555 } else { 6556 mHeldMotionless = MOTIONLESS_TRUE; 6557 nativeSetIsScrolling(false); 6558 keepScrollBarsVisible = true; 6559 } 6560 6561 mLastTouchTime = eventTime; 6562 } 6563 6564 doDrag(deltaX, deltaY); 6565 6566 // Turn off scrollbars when dragging a layer. 6567 if (keepScrollBarsVisible && 6568 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6569 if (mHeldMotionless != MOTIONLESS_TRUE) { 6570 mHeldMotionless = MOTIONLESS_TRUE; 6571 invalidate(); 6572 } 6573 // keep the scrollbar on the screen even there is no scroll 6574 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 6575 false); 6576 // Post a message so that we'll keep them alive while we're not scrolling. 6577 mPrivateHandler.sendMessageDelayed(mPrivateHandler 6578 .obtainMessage(AWAKEN_SCROLL_BARS), 6579 ViewConfiguration.getScrollDefaultDelay()); 6580 // return false to indicate that we can't pan out of the 6581 // view space 6582 return !done; 6583 } else { 6584 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6585 } 6586 break; 6587 } 6588 case MotionEvent.ACTION_UP: { 6589 if (!isFocused()) requestFocus(); 6590 // pass the touch events from UI thread to WebCore thread 6591 if (shouldForwardTouchEvent()) { 6592 TouchEventData ted = new TouchEventData(); 6593 ted.mIds = new int[1]; 6594 ted.mIds[0] = ev.getPointerId(0); 6595 ted.mAction = action; 6596 ted.mPoints = new Point[1]; 6597 ted.mPoints[0] = new Point(contentX, contentY); 6598 ted.mPointsInView = new Point[1]; 6599 ted.mPointsInView[0] = new Point(x, y); 6600 ted.mMetaState = ev.getMetaState(); 6601 ted.mReprocess = mDeferTouchProcess; 6602 ted.mNativeLayer = mCurrentScrollingLayerId; 6603 ted.mNativeLayerRect.set(mScrollingLayerRect); 6604 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6605 mTouchEventQueue.preQueueTouchEventData(ted); 6606 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6607 } 6608 mLastTouchUpTime = eventTime; 6609 if (mSentAutoScrollMessage) { 6610 mAutoScrollX = mAutoScrollY = 0; 6611 } 6612 switch (mTouchMode) { 6613 case TOUCH_DOUBLE_TAP_MODE: // double tap 6614 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6615 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6616 if (inFullScreenMode() || mDeferTouchProcess) { 6617 TouchEventData ted = new TouchEventData(); 6618 ted.mIds = new int[1]; 6619 ted.mIds[0] = ev.getPointerId(0); 6620 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 6621 ted.mPoints = new Point[1]; 6622 ted.mPoints[0] = new Point(contentX, contentY); 6623 ted.mPointsInView = new Point[1]; 6624 ted.mPointsInView[0] = new Point(x, y); 6625 ted.mMetaState = ev.getMetaState(); 6626 ted.mReprocess = mDeferTouchProcess; 6627 ted.mNativeLayer = nativeScrollableLayer( 6628 contentX, contentY, 6629 ted.mNativeLayerRect, null); 6630 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6631 mTouchEventQueue.preQueueTouchEventData(ted); 6632 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6633 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 6634 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 6635 mTouchMode = TOUCH_DONE_MODE; 6636 } 6637 break; 6638 case TOUCH_INIT_MODE: // tap 6639 case TOUCH_SHORTPRESS_START_MODE: 6640 case TOUCH_SHORTPRESS_MODE: 6641 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6642 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6643 if (mConfirmMove) { 6644 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 6645 " WebCore's response for touch down."); 6646 if (mPreventDefault != PREVENT_DEFAULT_YES 6647 && (computeMaxScrollX() > 0 6648 || computeMaxScrollY() > 0)) { 6649 // If the user has performed a very quick touch 6650 // sequence it is possible that we may get here 6651 // before WebCore has had a chance to process the events. 6652 // In this case, any call to preventDefault in the 6653 // JS touch handler will not have been executed yet. 6654 // Hence we will see both the UI (now) and WebCore 6655 // (when context switches) handling the event, 6656 // regardless of whether the web developer actually 6657 // doeses preventDefault in their touch handler. This 6658 // is the nature of our asynchronous touch model. 6659 6660 // we will not rewrite drag code here, but we 6661 // will try fling if it applies. 6662 WebViewCore.reducePriority(); 6663 // to get better performance, pause updating the 6664 // picture 6665 WebViewCore.pauseUpdatePicture(mWebViewCore); 6666 // fall through to TOUCH_DRAG_MODE 6667 } else { 6668 // WebKit may consume the touch event and modify 6669 // DOM. drawContentPicture() will be called with 6670 // animateSroll as true for better performance. 6671 // Force redraw in high-quality. 6672 invalidate(); 6673 break; 6674 } 6675 } else { 6676 if (mSelectingText) { 6677 // tapping on selection or controls does nothing 6678 if (!nativeHitSelection(contentX, contentY)) { 6679 selectionDone(); 6680 } 6681 break; 6682 } 6683 // only trigger double tap if the WebView is 6684 // scalable 6685 if (mTouchMode == TOUCH_INIT_MODE 6686 && (canZoomIn() || canZoomOut())) { 6687 mPrivateHandler.sendEmptyMessageDelayed( 6688 RELEASE_SINGLE_TAP, ViewConfiguration 6689 .getDoubleTapTimeout()); 6690 } else { 6691 doShortPress(); 6692 } 6693 break; 6694 } 6695 case TOUCH_DRAG_MODE: 6696 case TOUCH_DRAG_LAYER_MODE: 6697 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6698 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6699 // if the user waits a while w/o moving before the 6700 // up, we don't want to do a fling 6701 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 6702 if (mVelocityTracker == null) { 6703 Log.e(LOGTAG, "Got null mVelocityTracker when " 6704 + "mPreventDefault = " 6705 + mPreventDefault 6706 + " mDeferTouchProcess = " 6707 + mDeferTouchProcess); 6708 } else { 6709 mVelocityTracker.addMovement(ev); 6710 } 6711 // set to MOTIONLESS_IGNORE so that it won't keep 6712 // removing and sending message in 6713 // drawCoreAndCursorRing() 6714 mHeldMotionless = MOTIONLESS_IGNORE; 6715 doFling(); 6716 break; 6717 } else { 6718 if (mScroller.springBack(mScrollX, mScrollY, 0, 6719 computeMaxScrollX(), 0, 6720 computeMaxScrollY())) { 6721 invalidate(); 6722 } 6723 } 6724 // redraw in high-quality, as we're done dragging 6725 mHeldMotionless = MOTIONLESS_TRUE; 6726 invalidate(); 6727 // fall through 6728 case TOUCH_DRAG_START_MODE: 6729 // TOUCH_DRAG_START_MODE should not happen for the real 6730 // device as we almost certain will get a MOVE. But this 6731 // is possible on emulator. 6732 mLastVelocity = 0; 6733 WebViewCore.resumePriority(); 6734 if (!mSelectingText) { 6735 WebViewCore.resumeUpdatePicture(mWebViewCore); 6736 } 6737 break; 6738 } 6739 stopTouch(); 6740 break; 6741 } 6742 case MotionEvent.ACTION_CANCEL: { 6743 if (mTouchMode == TOUCH_DRAG_MODE) { 6744 mScroller.springBack(mScrollX, mScrollY, 0, 6745 computeMaxScrollX(), 0, computeMaxScrollY()); 6746 invalidate(); 6747 } 6748 cancelWebCoreTouchEvent(contentX, contentY, false); 6749 cancelTouch(); 6750 break; 6751 } 6752 } 6753 return true; 6754 } 6755 6756 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 6757 TouchEventData ted = new TouchEventData(); 6758 ted.mAction = ev.getActionMasked(); 6759 final int count = ev.getPointerCount(); 6760 ted.mIds = new int[count]; 6761 ted.mPoints = new Point[count]; 6762 ted.mPointsInView = new Point[count]; 6763 for (int c = 0; c < count; c++) { 6764 ted.mIds[c] = ev.getPointerId(c); 6765 int x = viewToContentX((int) ev.getX(c) + mScrollX); 6766 int y = viewToContentY((int) ev.getY(c) + mScrollY); 6767 ted.mPoints[c] = new Point(x, y); 6768 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 6769 } 6770 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 6771 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 6772 ted.mActionIndex = ev.getActionIndex(); 6773 } 6774 ted.mMetaState = ev.getMetaState(); 6775 ted.mReprocess = true; 6776 ted.mMotionEvent = MotionEvent.obtain(ev); 6777 ted.mSequence = sequence; 6778 mTouchEventQueue.preQueueTouchEventData(ted); 6779 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6780 cancelLongPress(); 6781 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6782 } 6783 6784 void handleMultiTouchInWebView(MotionEvent ev) { 6785 if (DebugFlags.WEB_VIEW) { 6786 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 6787 + " mTouchMode=" + mTouchMode 6788 + " numPointers=" + ev.getPointerCount() 6789 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 6790 } 6791 6792 final ScaleGestureDetector detector = 6793 mZoomManager.getMultiTouchGestureDetector(); 6794 6795 // A few apps use WebView but don't instantiate gesture detector. 6796 // We don't need to support multi touch for them. 6797 if (detector == null) return; 6798 6799 float x = ev.getX(); 6800 float y = ev.getY(); 6801 6802 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6803 detector.onTouchEvent(ev); 6804 6805 if (detector.isInProgress()) { 6806 if (DebugFlags.WEB_VIEW) { 6807 Log.v(LOGTAG, "detector is in progress"); 6808 } 6809 mLastTouchTime = ev.getEventTime(); 6810 x = detector.getFocusX(); 6811 y = detector.getFocusY(); 6812 6813 cancelLongPress(); 6814 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6815 if (!mZoomManager.supportsPanDuringZoom()) { 6816 return; 6817 } 6818 mTouchMode = TOUCH_DRAG_MODE; 6819 if (mVelocityTracker == null) { 6820 mVelocityTracker = VelocityTracker.obtain(); 6821 } 6822 } 6823 } 6824 6825 int action = ev.getActionMasked(); 6826 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6827 cancelTouch(); 6828 action = MotionEvent.ACTION_DOWN; 6829 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() >= 2) { 6830 // set mLastTouchX/Y to the remaining points for multi-touch. 6831 mLastTouchX = Math.round(x); 6832 mLastTouchY = Math.round(y); 6833 } else if (action == MotionEvent.ACTION_MOVE) { 6834 // negative x or y indicate it is on the edge, skip it. 6835 if (x < 0 || y < 0) { 6836 return; 6837 } 6838 } 6839 6840 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6841 } 6842 6843 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6844 if (shouldForwardTouchEvent()) { 6845 if (removeEvents) { 6846 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6847 } 6848 TouchEventData ted = new TouchEventData(); 6849 ted.mIds = new int[1]; 6850 ted.mIds[0] = 0; 6851 ted.mPoints = new Point[1]; 6852 ted.mPoints[0] = new Point(x, y); 6853 ted.mPointsInView = new Point[1]; 6854 int viewX = contentToViewX(x) - mScrollX; 6855 int viewY = contentToViewY(y) - mScrollY; 6856 ted.mPointsInView[0] = new Point(viewX, viewY); 6857 ted.mAction = MotionEvent.ACTION_CANCEL; 6858 ted.mNativeLayer = nativeScrollableLayer( 6859 x, y, ted.mNativeLayerRect, null); 6860 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6861 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6862 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6863 6864 if (removeEvents) { 6865 // Mark this after sending the message above; we should 6866 // be willing to ignore the cancel event that we just sent. 6867 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6868 } 6869 } 6870 } 6871 6872 private void startTouch(float x, float y, long eventTime) { 6873 // Remember where the motion event started 6874 mStartTouchX = mLastTouchX = Math.round(x); 6875 mStartTouchY = mLastTouchY = Math.round(y); 6876 mLastTouchTime = eventTime; 6877 mVelocityTracker = VelocityTracker.obtain(); 6878 mSnapScrollMode = SNAP_NONE; 6879 mPrivateHandler.sendEmptyMessageDelayed(UPDATE_SELECTION, 6880 ViewConfiguration.getTapTimeout()); 6881 } 6882 6883 private void startDrag() { 6884 WebViewCore.reducePriority(); 6885 // to get better performance, pause updating the picture 6886 WebViewCore.pauseUpdatePicture(mWebViewCore); 6887 nativeSetIsScrolling(true); 6888 6889 if (!mDragFromTextInput) { 6890 nativeHideCursor(); 6891 } 6892 6893 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6894 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6895 mZoomManager.invokeZoomPicker(); 6896 } 6897 } 6898 6899 private void doDrag(int deltaX, int deltaY) { 6900 if ((deltaX | deltaY) != 0) { 6901 int oldX = mScrollX; 6902 int oldY = mScrollY; 6903 int rangeX = computeMaxScrollX(); 6904 int rangeY = computeMaxScrollY(); 6905 // Check for the original scrolling layer in case we change 6906 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6907 // reached the edge of a layer but mScrollingLayer will be non-zero 6908 // if we initiated the drag on a layer. 6909 if (mCurrentScrollingLayerId != 0) { 6910 final int contentX = viewToContentDimension(deltaX); 6911 final int contentY = viewToContentDimension(deltaY); 6912 6913 // Check the scrolling bounds to see if we will actually do any 6914 // scrolling. The rectangle is in document coordinates. 6915 final int maxX = mScrollingLayerRect.right; 6916 final int maxY = mScrollingLayerRect.bottom; 6917 final int resultX = Math.max(0, 6918 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6919 final int resultY = Math.max(0, 6920 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6921 6922 if (resultX != mScrollingLayerRect.left || 6923 resultY != mScrollingLayerRect.top) { 6924 // In case we switched to dragging the page. 6925 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6926 deltaX = contentX; 6927 deltaY = contentY; 6928 oldX = mScrollingLayerRect.left; 6929 oldY = mScrollingLayerRect.top; 6930 rangeX = maxX; 6931 rangeY = maxY; 6932 } else { 6933 // Scroll the main page if we are not going to scroll the 6934 // layer. This does not reset mScrollingLayer in case the 6935 // user changes directions and the layer can scroll the 6936 // other way. 6937 mTouchMode = TOUCH_DRAG_MODE; 6938 } 6939 } 6940 6941 if (mOverScrollGlow != null) { 6942 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6943 } 6944 6945 overScrollBy(deltaX, deltaY, oldX, oldY, 6946 rangeX, rangeY, 6947 mOverscrollDistance, mOverscrollDistance, true); 6948 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6949 invalidate(); 6950 } 6951 } 6952 mZoomManager.keepZoomPickerVisible(); 6953 } 6954 6955 private void stopTouch() { 6956 if (mScroller.isFinished() && !mSelectingText 6957 && (mTouchMode == TOUCH_DRAG_MODE || mTouchMode == TOUCH_DRAG_LAYER_MODE)) { 6958 WebViewCore.resumePriority(); 6959 WebViewCore.resumeUpdatePicture(mWebViewCore); 6960 nativeSetIsScrolling(false); 6961 } 6962 6963 // we also use mVelocityTracker == null to tell us that we are 6964 // not "moving around", so we can take the slower/prettier 6965 // mode in the drawing code 6966 if (mVelocityTracker != null) { 6967 mVelocityTracker.recycle(); 6968 mVelocityTracker = null; 6969 } 6970 6971 // Release any pulled glows 6972 if (mOverScrollGlow != null) { 6973 mOverScrollGlow.releaseAll(); 6974 } 6975 } 6976 6977 private void cancelTouch() { 6978 // we also use mVelocityTracker == null to tell us that we are 6979 // not "moving around", so we can take the slower/prettier 6980 // mode in the drawing code 6981 if (mVelocityTracker != null) { 6982 mVelocityTracker.recycle(); 6983 mVelocityTracker = null; 6984 } 6985 6986 if ((mTouchMode == TOUCH_DRAG_MODE 6987 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6988 WebViewCore.resumePriority(); 6989 WebViewCore.resumeUpdatePicture(mWebViewCore); 6990 nativeSetIsScrolling(false); 6991 } 6992 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6993 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6994 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6995 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6996 if (sDisableNavcache) { 6997 removeTouchHighlight(); 6998 } 6999 mHeldMotionless = MOTIONLESS_TRUE; 7000 mTouchMode = TOUCH_DONE_MODE; 7001 nativeHideCursor(); 7002 } 7003 7004 @Override 7005 public boolean onGenericMotionEvent(MotionEvent event) { 7006 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 7007 switch (event.getAction()) { 7008 case MotionEvent.ACTION_SCROLL: { 7009 final float vscroll; 7010 final float hscroll; 7011 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 7012 vscroll = 0; 7013 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7014 } else { 7015 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 7016 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 7017 } 7018 if (hscroll != 0 || vscroll != 0) { 7019 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 7020 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 7021 if (pinScrollBy(hdelta, vdelta, false, 0)) { 7022 return true; 7023 } 7024 } 7025 } 7026 } 7027 } 7028 return super.onGenericMotionEvent(event); 7029 } 7030 7031 private long mTrackballFirstTime = 0; 7032 private long mTrackballLastTime = 0; 7033 private float mTrackballRemainsX = 0.0f; 7034 private float mTrackballRemainsY = 0.0f; 7035 private int mTrackballXMove = 0; 7036 private int mTrackballYMove = 0; 7037 private boolean mSelectingText = false; 7038 private boolean mSelectionStarted = false; 7039 private boolean mExtendSelection = false; 7040 private boolean mDrawSelectionPointer = false; 7041 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 7042 private static final int TRACKBALL_TIMEOUT = 200; 7043 private static final int TRACKBALL_WAIT = 100; 7044 private static final int TRACKBALL_SCALE = 400; 7045 private static final int TRACKBALL_SCROLL_COUNT = 5; 7046 private static final int TRACKBALL_MOVE_COUNT = 10; 7047 private static final int TRACKBALL_MULTIPLIER = 3; 7048 private static final int SELECT_CURSOR_OFFSET = 16; 7049 private static final int SELECT_SCROLL = 5; 7050 private int mSelectX = 0; 7051 private int mSelectY = 0; 7052 private boolean mFocusSizeChanged = false; 7053 private boolean mTrackballDown = false; 7054 private long mTrackballUpTime = 0; 7055 private long mLastCursorTime = 0; 7056 private Rect mLastCursorBounds; 7057 7058 // Set by default; BrowserActivity clears to interpret trackball data 7059 // directly for movement. Currently, the framework only passes 7060 // arrow key events, not trackball events, from one child to the next 7061 private boolean mMapTrackballToArrowKeys = true; 7062 7063 private DrawData mDelaySetPicture; 7064 private DrawData mLoadedPicture; 7065 7066 public void setMapTrackballToArrowKeys(boolean setMap) { 7067 checkThread(); 7068 mMapTrackballToArrowKeys = setMap; 7069 } 7070 7071 void resetTrackballTime() { 7072 mTrackballLastTime = 0; 7073 } 7074 7075 @Override 7076 public boolean onTrackballEvent(MotionEvent ev) { 7077 long time = ev.getEventTime(); 7078 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 7079 if (ev.getY() > 0) pageDown(true); 7080 if (ev.getY() < 0) pageUp(true); 7081 return true; 7082 } 7083 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 7084 if (mSelectingText) { 7085 return true; // discard press if copy in progress 7086 } 7087 mTrackballDown = true; 7088 if (mNativeClass == 0) { 7089 return false; 7090 } 7091 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 7092 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 7093 nativeSelectBestAt(mLastCursorBounds); 7094 } 7095 if (DebugFlags.WEB_VIEW) { 7096 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 7097 + " time=" + time 7098 + " mLastCursorTime=" + mLastCursorTime); 7099 } 7100 if (isInTouchMode()) requestFocusFromTouch(); 7101 return false; // let common code in onKeyDown at it 7102 } 7103 if (ev.getAction() == MotionEvent.ACTION_UP) { 7104 // LONG_PRESS_CENTER is set in common onKeyDown 7105 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 7106 mTrackballDown = false; 7107 mTrackballUpTime = time; 7108 if (mSelectingText) { 7109 if (mExtendSelection) { 7110 copySelection(); 7111 selectionDone(); 7112 } else { 7113 mExtendSelection = true; 7114 nativeSetExtendSelection(); 7115 invalidate(); // draw the i-beam instead of the arrow 7116 } 7117 return true; // discard press if copy in progress 7118 } 7119 if (DebugFlags.WEB_VIEW) { 7120 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 7121 + " time=" + time 7122 ); 7123 } 7124 return false; // let common code in onKeyUp at it 7125 } 7126 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 7127 AccessibilityManager.getInstance(mContext).isEnabled()) { 7128 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 7129 return false; 7130 } 7131 if (mTrackballDown) { 7132 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 7133 return true; // discard move if trackball is down 7134 } 7135 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 7136 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 7137 return true; 7138 } 7139 // TODO: alternatively we can do panning as touch does 7140 switchOutDrawHistory(); 7141 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 7142 if (DebugFlags.WEB_VIEW) { 7143 Log.v(LOGTAG, "onTrackballEvent time=" 7144 + time + " last=" + mTrackballLastTime); 7145 } 7146 mTrackballFirstTime = time; 7147 mTrackballXMove = mTrackballYMove = 0; 7148 } 7149 mTrackballLastTime = time; 7150 if (DebugFlags.WEB_VIEW) { 7151 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 7152 } 7153 mTrackballRemainsX += ev.getX(); 7154 mTrackballRemainsY += ev.getY(); 7155 doTrackball(time, ev.getMetaState()); 7156 return true; 7157 } 7158 7159 void moveSelection(float xRate, float yRate) { 7160 if (mNativeClass == 0) 7161 return; 7162 int width = getViewWidth(); 7163 int height = getViewHeight(); 7164 mSelectX += xRate; 7165 mSelectY += yRate; 7166 int maxX = width + mScrollX; 7167 int maxY = height + mScrollY; 7168 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 7169 , mSelectX)); 7170 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 7171 , mSelectY)); 7172 if (DebugFlags.WEB_VIEW) { 7173 Log.v(LOGTAG, "moveSelection" 7174 + " mSelectX=" + mSelectX 7175 + " mSelectY=" + mSelectY 7176 + " mScrollX=" + mScrollX 7177 + " mScrollY=" + mScrollY 7178 + " xRate=" + xRate 7179 + " yRate=" + yRate 7180 ); 7181 } 7182 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 7183 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 7184 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 7185 : 0; 7186 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 7187 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 7188 : 0; 7189 pinScrollBy(scrollX, scrollY, true, 0); 7190 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 7191 requestRectangleOnScreen(select); 7192 invalidate(); 7193 } 7194 7195 private int scaleTrackballX(float xRate, int width) { 7196 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 7197 int nextXMove = xMove; 7198 if (xMove > 0) { 7199 if (xMove > mTrackballXMove) { 7200 xMove -= mTrackballXMove; 7201 } 7202 } else if (xMove < mTrackballXMove) { 7203 xMove -= mTrackballXMove; 7204 } 7205 mTrackballXMove = nextXMove; 7206 return xMove; 7207 } 7208 7209 private int scaleTrackballY(float yRate, int height) { 7210 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 7211 int nextYMove = yMove; 7212 if (yMove > 0) { 7213 if (yMove > mTrackballYMove) { 7214 yMove -= mTrackballYMove; 7215 } 7216 } else if (yMove < mTrackballYMove) { 7217 yMove -= mTrackballYMove; 7218 } 7219 mTrackballYMove = nextYMove; 7220 return yMove; 7221 } 7222 7223 private int keyCodeToSoundsEffect(int keyCode) { 7224 switch(keyCode) { 7225 case KeyEvent.KEYCODE_DPAD_UP: 7226 return SoundEffectConstants.NAVIGATION_UP; 7227 case KeyEvent.KEYCODE_DPAD_RIGHT: 7228 return SoundEffectConstants.NAVIGATION_RIGHT; 7229 case KeyEvent.KEYCODE_DPAD_DOWN: 7230 return SoundEffectConstants.NAVIGATION_DOWN; 7231 case KeyEvent.KEYCODE_DPAD_LEFT: 7232 return SoundEffectConstants.NAVIGATION_LEFT; 7233 } 7234 throw new IllegalArgumentException("keyCode must be one of " + 7235 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 7236 "KEYCODE_DPAD_LEFT}."); 7237 } 7238 7239 private void doTrackball(long time, int metaState) { 7240 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 7241 if (elapsed == 0) { 7242 elapsed = TRACKBALL_TIMEOUT; 7243 } 7244 float xRate = mTrackballRemainsX * 1000 / elapsed; 7245 float yRate = mTrackballRemainsY * 1000 / elapsed; 7246 int viewWidth = getViewWidth(); 7247 int viewHeight = getViewHeight(); 7248 if (mSelectingText) { 7249 if (!mDrawSelectionPointer) { 7250 // The last selection was made by touch, disabling drawing the 7251 // selection pointer. Allow the trackball to adjust the 7252 // position of the touch control. 7253 mSelectX = contentToViewX(nativeSelectionX()); 7254 mSelectY = contentToViewY(nativeSelectionY()); 7255 mDrawSelectionPointer = mExtendSelection = true; 7256 nativeSetExtendSelection(); 7257 } 7258 moveSelection(scaleTrackballX(xRate, viewWidth), 7259 scaleTrackballY(yRate, viewHeight)); 7260 mTrackballRemainsX = mTrackballRemainsY = 0; 7261 return; 7262 } 7263 float ax = Math.abs(xRate); 7264 float ay = Math.abs(yRate); 7265 float maxA = Math.max(ax, ay); 7266 if (DebugFlags.WEB_VIEW) { 7267 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 7268 + " xRate=" + xRate 7269 + " yRate=" + yRate 7270 + " mTrackballRemainsX=" + mTrackballRemainsX 7271 + " mTrackballRemainsY=" + mTrackballRemainsY); 7272 } 7273 int width = mContentWidth - viewWidth; 7274 int height = mContentHeight - viewHeight; 7275 if (width < 0) width = 0; 7276 if (height < 0) height = 0; 7277 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 7278 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 7279 maxA = Math.max(ax, ay); 7280 int count = Math.max(0, (int) maxA); 7281 int oldScrollX = mScrollX; 7282 int oldScrollY = mScrollY; 7283 if (count > 0) { 7284 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 7285 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 7286 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 7287 KeyEvent.KEYCODE_DPAD_RIGHT; 7288 count = Math.min(count, TRACKBALL_MOVE_COUNT); 7289 if (DebugFlags.WEB_VIEW) { 7290 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 7291 + " count=" + count 7292 + " mTrackballRemainsX=" + mTrackballRemainsX 7293 + " mTrackballRemainsY=" + mTrackballRemainsY); 7294 } 7295 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 7296 for (int i = 0; i < count; i++) { 7297 letPageHandleNavKey(selectKeyCode, time, true, metaState); 7298 } 7299 letPageHandleNavKey(selectKeyCode, time, false, metaState); 7300 } else if (navHandledKey(selectKeyCode, count, false, time)) { 7301 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 7302 } 7303 mTrackballRemainsX = mTrackballRemainsY = 0; 7304 } 7305 if (count >= TRACKBALL_SCROLL_COUNT) { 7306 int xMove = scaleTrackballX(xRate, width); 7307 int yMove = scaleTrackballY(yRate, height); 7308 if (DebugFlags.WEB_VIEW) { 7309 Log.v(LOGTAG, "doTrackball pinScrollBy" 7310 + " count=" + count 7311 + " xMove=" + xMove + " yMove=" + yMove 7312 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 7313 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 7314 ); 7315 } 7316 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 7317 xMove = 0; 7318 } 7319 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 7320 yMove = 0; 7321 } 7322 if (xMove != 0 || yMove != 0) { 7323 pinScrollBy(xMove, yMove, true, 0); 7324 } 7325 } 7326 } 7327 7328 /** 7329 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 7330 * @return Maximum horizontal scroll position within real content 7331 */ 7332 int computeMaxScrollX() { 7333 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 7334 } 7335 7336 /** 7337 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 7338 * @return Maximum vertical scroll position within real content 7339 */ 7340 int computeMaxScrollY() { 7341 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 7342 - getViewHeightWithTitle(), 0); 7343 } 7344 7345 boolean updateScrollCoordinates(int x, int y) { 7346 int oldX = mScrollX; 7347 int oldY = mScrollY; 7348 mScrollX = x; 7349 mScrollY = y; 7350 if (oldX != mScrollX || oldY != mScrollY) { 7351 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 7352 return true; 7353 } else { 7354 return false; 7355 } 7356 } 7357 7358 public void flingScroll(int vx, int vy) { 7359 checkThread(); 7360 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 7361 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 7362 invalidate(); 7363 } 7364 7365 private void doFling() { 7366 if (mVelocityTracker == null) { 7367 return; 7368 } 7369 int maxX = computeMaxScrollX(); 7370 int maxY = computeMaxScrollY(); 7371 7372 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 7373 int vx = (int) mVelocityTracker.getXVelocity(); 7374 int vy = (int) mVelocityTracker.getYVelocity(); 7375 7376 int scrollX = mScrollX; 7377 int scrollY = mScrollY; 7378 int overscrollDistance = mOverscrollDistance; 7379 int overflingDistance = mOverflingDistance; 7380 7381 // Use the layer's scroll data if applicable. 7382 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 7383 scrollX = mScrollingLayerRect.left; 7384 scrollY = mScrollingLayerRect.top; 7385 maxX = mScrollingLayerRect.right; 7386 maxY = mScrollingLayerRect.bottom; 7387 // No overscrolling for layers. 7388 overscrollDistance = overflingDistance = 0; 7389 } 7390 7391 if (mSnapScrollMode != SNAP_NONE) { 7392 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 7393 vy = 0; 7394 } else { 7395 vx = 0; 7396 } 7397 } 7398 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 7399 WebViewCore.resumePriority(); 7400 if (!mSelectingText) { 7401 WebViewCore.resumeUpdatePicture(mWebViewCore); 7402 } 7403 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 7404 invalidate(); 7405 } 7406 return; 7407 } 7408 float currentVelocity = mScroller.getCurrVelocity(); 7409 float velocity = (float) Math.hypot(vx, vy); 7410 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 7411 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 7412 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 7413 - Math.atan2(vy, vx))); 7414 final float circle = (float) (Math.PI) * 2.0f; 7415 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 7416 vx += currentVelocity * mLastVelX / mLastVelocity; 7417 vy += currentVelocity * mLastVelY / mLastVelocity; 7418 velocity = (float) Math.hypot(vx, vy); 7419 if (DebugFlags.WEB_VIEW) { 7420 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 7421 } 7422 } else if (DebugFlags.WEB_VIEW) { 7423 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 7424 } 7425 } else if (DebugFlags.WEB_VIEW) { 7426 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 7427 + " current=" + currentVelocity 7428 + " vx=" + vx + " vy=" + vy 7429 + " maxX=" + maxX + " maxY=" + maxY 7430 + " scrollX=" + scrollX + " scrollY=" + scrollY 7431 + " layer=" + mCurrentScrollingLayerId); 7432 } 7433 7434 // Allow sloppy flings without overscrolling at the edges. 7435 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 7436 vx = 0; 7437 } 7438 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 7439 vy = 0; 7440 } 7441 7442 if (overscrollDistance < overflingDistance) { 7443 if ((vx > 0 && scrollX == -overscrollDistance) || 7444 (vx < 0 && scrollX == maxX + overscrollDistance)) { 7445 vx = 0; 7446 } 7447 if ((vy > 0 && scrollY == -overscrollDistance) || 7448 (vy < 0 && scrollY == maxY + overscrollDistance)) { 7449 vy = 0; 7450 } 7451 } 7452 7453 mLastVelX = vx; 7454 mLastVelY = vy; 7455 mLastVelocity = velocity; 7456 7457 // no horizontal overscroll if the content just fits 7458 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 7459 maxX == 0 ? 0 : overflingDistance, overflingDistance); 7460 // Duration is calculated based on velocity. With range boundaries and overscroll 7461 // we may not know how long the final animation will take. (Hence the deprecation 7462 // warning on the call below.) It's not a big deal for scroll bars but if webcore 7463 // resumes during this effect we will take a performance hit. See computeScroll; 7464 // we resume webcore there when the animation is finished. 7465 final int time = mScroller.getDuration(); 7466 7467 // Suppress scrollbars for layer scrolling. 7468 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 7469 awakenScrollBars(time); 7470 } 7471 7472 invalidate(); 7473 } 7474 7475 /** 7476 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 7477 * in charge of installing this view to the view hierarchy. This view will 7478 * become visible when the user starts scrolling via touch and fade away if 7479 * the user does not interact with it. 7480 * <p/> 7481 * API version 3 introduces a built-in zoom mechanism that is shown 7482 * automatically by the MapView. This is the preferred approach for 7483 * showing the zoom UI. 7484 * 7485 * @deprecated The built-in zoom mechanism is preferred, see 7486 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 7487 */ 7488 @Deprecated 7489 public View getZoomControls() { 7490 checkThread(); 7491 if (!getSettings().supportZoom()) { 7492 Log.w(LOGTAG, "This WebView doesn't support zoom."); 7493 return null; 7494 } 7495 return mZoomManager.getExternalZoomPicker(); 7496 } 7497 7498 void dismissZoomControl() { 7499 mZoomManager.dismissZoomPicker(); 7500 } 7501 7502 float getDefaultZoomScale() { 7503 return mZoomManager.getDefaultScale(); 7504 } 7505 7506 /** 7507 * Return the overview scale of the WebView 7508 * @return The overview scale. 7509 */ 7510 float getZoomOverviewScale() { 7511 return mZoomManager.getZoomOverviewScale(); 7512 } 7513 7514 /** 7515 * @return TRUE if the WebView can be zoomed in. 7516 */ 7517 public boolean canZoomIn() { 7518 checkThread(); 7519 return mZoomManager.canZoomIn(); 7520 } 7521 7522 /** 7523 * @return TRUE if the WebView can be zoomed out. 7524 */ 7525 public boolean canZoomOut() { 7526 checkThread(); 7527 return mZoomManager.canZoomOut(); 7528 } 7529 7530 /** 7531 * Perform zoom in in the webview 7532 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 7533 */ 7534 public boolean zoomIn() { 7535 checkThread(); 7536 return mZoomManager.zoomIn(); 7537 } 7538 7539 /** 7540 * Perform zoom out in the webview 7541 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 7542 */ 7543 public boolean zoomOut() { 7544 checkThread(); 7545 return mZoomManager.zoomOut(); 7546 } 7547 7548 /** 7549 * This selects the best clickable target at mLastTouchX and mLastTouchY 7550 * and calls showCursorTimed on the native side 7551 */ 7552 private void updateSelection() { 7553 if (mNativeClass == 0 || sDisableNavcache) { 7554 return; 7555 } 7556 mPrivateHandler.removeMessages(UPDATE_SELECTION); 7557 // mLastTouchX and mLastTouchY are the point in the current viewport 7558 int contentX = viewToContentX(mLastTouchX + mScrollX); 7559 int contentY = viewToContentY(mLastTouchY + mScrollY); 7560 int slop = viewToContentDimension(mNavSlop); 7561 Rect rect = new Rect(contentX - slop, contentY - slop, 7562 contentX + slop, contentY + slop); 7563 nativeSelectBestAt(rect); 7564 mInitialHitTestResult = hitTestResult(null); 7565 } 7566 7567 /** 7568 * Scroll the focused text field to match the WebTextView 7569 * @param xPercent New x position of the WebTextView from 0 to 1. 7570 */ 7571 /*package*/ void scrollFocusedTextInputX(float xPercent) { 7572 if (!inEditingMode() || mWebViewCore == null) { 7573 return; 7574 } 7575 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 7576 new Float(xPercent)); 7577 } 7578 7579 /** 7580 * Scroll the focused textarea vertically to match the WebTextView 7581 * @param y New y position of the WebTextView in view coordinates 7582 */ 7583 /* package */ void scrollFocusedTextInputY(int y) { 7584 if (!inEditingMode() || mWebViewCore == null) { 7585 return; 7586 } 7587 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 7588 } 7589 7590 /** 7591 * Set our starting point and time for a drag from the WebTextView. 7592 */ 7593 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 7594 if (!inEditingMode()) { 7595 return; 7596 } 7597 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 7598 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 7599 mLastTouchTime = eventTime; 7600 if (!mScroller.isFinished()) { 7601 abortAnimation(); 7602 } 7603 mSnapScrollMode = SNAP_NONE; 7604 mVelocityTracker = VelocityTracker.obtain(); 7605 mTouchMode = TOUCH_DRAG_START_MODE; 7606 } 7607 7608 /** 7609 * Given a motion event from the WebTextView, set its location to our 7610 * coordinates, and handle the event. 7611 */ 7612 /*package*/ boolean textFieldDrag(MotionEvent event) { 7613 if (!inEditingMode()) { 7614 return false; 7615 } 7616 mDragFromTextInput = true; 7617 event.offsetLocation((mWebTextView.getLeft() - mScrollX), 7618 (mWebTextView.getTop() - mScrollY)); 7619 boolean result = onTouchEvent(event); 7620 mDragFromTextInput = false; 7621 return result; 7622 } 7623 7624 /** 7625 * Due a touch up from a WebTextView. This will be handled by webkit to 7626 * change the selection. 7627 * @param event MotionEvent in the WebTextView's coordinates. 7628 */ 7629 /*package*/ void touchUpOnTextField(MotionEvent event) { 7630 if (!inEditingMode()) { 7631 return; 7632 } 7633 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 7634 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 7635 int slop = viewToContentDimension(mNavSlop); 7636 nativeMotionUp(x, y, slop); 7637 } 7638 7639 /** 7640 * Called when pressing the center key or trackball on a textfield. 7641 */ 7642 /*package*/ void centerKeyPressOnTextField() { 7643 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 7644 nativeCursorNodePointer()); 7645 } 7646 7647 private void doShortPress() { 7648 if (mNativeClass == 0) { 7649 return; 7650 } 7651 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7652 return; 7653 } 7654 mTouchMode = TOUCH_DONE_MODE; 7655 updateSelection(); 7656 switchOutDrawHistory(); 7657 // mLastTouchX and mLastTouchY are the point in the current viewport 7658 int contentX = viewToContentX(mLastTouchX + mScrollX); 7659 int contentY = viewToContentY(mLastTouchY + mScrollY); 7660 int slop = viewToContentDimension(mNavSlop); 7661 if (sDisableNavcache && !mTouchHighlightRegion.isEmpty()) { 7662 // set mTouchHighlightRequested to 0 to cause an immediate 7663 // drawing of the touch rings 7664 mTouchHighlightRequested = 0; 7665 invalidate(mTouchHighlightRegion.getBounds()); 7666 mPrivateHandler.postDelayed(new Runnable() { 7667 @Override 7668 public void run() { 7669 removeTouchHighlight(); 7670 } 7671 }, ViewConfiguration.getPressedStateDuration()); 7672 } 7673 if (sDisableNavcache) { 7674 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 7675 // use "0" as generation id to inform WebKit to use the same x/y as 7676 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 7677 touchUpData.mMoveGeneration = 0; 7678 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 7679 } else if (nativePointInNavCache(contentX, contentY, slop)) { 7680 WebViewCore.MotionUpData motionUpData = new WebViewCore 7681 .MotionUpData(); 7682 motionUpData.mFrame = nativeCacheHitFramePointer(); 7683 motionUpData.mNode = nativeCacheHitNodePointer(); 7684 motionUpData.mBounds = nativeCacheHitNodeBounds(); 7685 motionUpData.mX = contentX; 7686 motionUpData.mY = contentY; 7687 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 7688 motionUpData); 7689 } else { 7690 doMotionUp(contentX, contentY); 7691 } 7692 } 7693 7694 private void doMotionUp(int contentX, int contentY) { 7695 int slop = viewToContentDimension(mNavSlop); 7696 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 7697 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 7698 } 7699 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 7700 playSoundEffect(SoundEffectConstants.CLICK); 7701 } 7702 } 7703 7704 void sendPluginDrawMsg() { 7705 mWebViewCore.sendMessage(EventHub.PLUGIN_SURFACE_READY); 7706 } 7707 7708 /** 7709 * Returns plugin bounds if x/y in content coordinates corresponds to a 7710 * plugin. Otherwise a NULL rectangle is returned. 7711 */ 7712 Rect getPluginBounds(int x, int y) { 7713 int slop = viewToContentDimension(mNavSlop); 7714 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 7715 return nativeCacheHitNodeBounds(); 7716 } else { 7717 return null; 7718 } 7719 } 7720 7721 /* 7722 * Return true if the rect (e.g. plugin) is fully visible and maximized 7723 * inside the WebView. 7724 */ 7725 boolean isRectFitOnScreen(Rect rect) { 7726 final int rectWidth = rect.width(); 7727 final int rectHeight = rect.height(); 7728 final int viewWidth = getViewWidth(); 7729 final int viewHeight = getViewHeightWithTitle(); 7730 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 7731 scale = mZoomManager.computeScaleWithLimits(scale); 7732 return !mZoomManager.willScaleTriggerZoom(scale) 7733 && contentToViewX(rect.left) >= mScrollX 7734 && contentToViewX(rect.right) <= mScrollX + viewWidth 7735 && contentToViewY(rect.top) >= mScrollY 7736 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 7737 } 7738 7739 /* 7740 * Maximize and center the rectangle, specified in the document coordinate 7741 * space, inside the WebView. If the zoom doesn't need to be changed, do an 7742 * animated scroll to center it. If the zoom needs to be changed, find the 7743 * zoom center and do a smooth zoom transition. The rect is in document 7744 * coordinates 7745 */ 7746 void centerFitRect(Rect rect) { 7747 final int rectWidth = rect.width(); 7748 final int rectHeight = rect.height(); 7749 final int viewWidth = getViewWidth(); 7750 final int viewHeight = getViewHeightWithTitle(); 7751 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 7752 / rectHeight); 7753 scale = mZoomManager.computeScaleWithLimits(scale); 7754 if (!mZoomManager.willScaleTriggerZoom(scale)) { 7755 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 7756 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 7757 true, 0); 7758 } else { 7759 float actualScale = mZoomManager.getScale(); 7760 float oldScreenX = rect.left * actualScale - mScrollX; 7761 float rectViewX = rect.left * scale; 7762 float rectViewWidth = rectWidth * scale; 7763 float newMaxWidth = mContentWidth * scale; 7764 float newScreenX = (viewWidth - rectViewWidth) / 2; 7765 // pin the newX to the WebView 7766 if (newScreenX > rectViewX) { 7767 newScreenX = rectViewX; 7768 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 7769 newScreenX = viewWidth - (newMaxWidth - rectViewX); 7770 } 7771 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 7772 / (scale - actualScale); 7773 float oldScreenY = rect.top * actualScale + getTitleHeight() 7774 - mScrollY; 7775 float rectViewY = rect.top * scale + getTitleHeight(); 7776 float rectViewHeight = rectHeight * scale; 7777 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 7778 float newScreenY = (viewHeight - rectViewHeight) / 2; 7779 // pin the newY to the WebView 7780 if (newScreenY > rectViewY) { 7781 newScreenY = rectViewY; 7782 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 7783 newScreenY = viewHeight - (newMaxHeight - rectViewY); 7784 } 7785 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 7786 / (scale - actualScale); 7787 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 7788 mZoomManager.startZoomAnimation(scale, false); 7789 } 7790 } 7791 7792 // Called by JNI to handle a touch on a node representing an email address, 7793 // address, or phone number 7794 private void overrideLoading(String url) { 7795 mCallbackProxy.uiOverrideUrlLoading(url); 7796 } 7797 7798 @Override 7799 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 7800 // FIXME: If a subwindow is showing find, and the user touches the 7801 // background window, it can steal focus. 7802 if (mFindIsUp) return false; 7803 boolean result = false; 7804 if (inEditingMode()) { 7805 result = mWebTextView.requestFocus(direction, 7806 previouslyFocusedRect); 7807 } else { 7808 result = super.requestFocus(direction, previouslyFocusedRect); 7809 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 7810 // For cases such as GMail, where we gain focus from a direction, 7811 // we want to move to the first available link. 7812 // FIXME: If there are no visible links, we may not want to 7813 int fakeKeyDirection = 0; 7814 switch(direction) { 7815 case View.FOCUS_UP: 7816 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 7817 break; 7818 case View.FOCUS_DOWN: 7819 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 7820 break; 7821 case View.FOCUS_LEFT: 7822 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 7823 break; 7824 case View.FOCUS_RIGHT: 7825 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 7826 break; 7827 default: 7828 return result; 7829 } 7830 if (mNativeClass != 0 && !nativeHasCursorNode()) { 7831 navHandledKey(fakeKeyDirection, 1, true, 0); 7832 } 7833 } 7834 } 7835 return result; 7836 } 7837 7838 @Override 7839 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7840 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7841 7842 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7843 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7844 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7845 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7846 7847 int measuredHeight = heightSize; 7848 int measuredWidth = widthSize; 7849 7850 // Grab the content size from WebViewCore. 7851 int contentHeight = contentToViewDimension(mContentHeight); 7852 int contentWidth = contentToViewDimension(mContentWidth); 7853 7854// Log.d(LOGTAG, "------- measure " + heightMode); 7855 7856 if (heightMode != MeasureSpec.EXACTLY) { 7857 mHeightCanMeasure = true; 7858 measuredHeight = contentHeight; 7859 if (heightMode == MeasureSpec.AT_MOST) { 7860 // If we are larger than the AT_MOST height, then our height can 7861 // no longer be measured and we should scroll internally. 7862 if (measuredHeight > heightSize) { 7863 measuredHeight = heightSize; 7864 mHeightCanMeasure = false; 7865 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7866 } 7867 } 7868 } else { 7869 mHeightCanMeasure = false; 7870 } 7871 if (mNativeClass != 0) { 7872 nativeSetHeightCanMeasure(mHeightCanMeasure); 7873 } 7874 // For the width, always use the given size unless unspecified. 7875 if (widthMode == MeasureSpec.UNSPECIFIED) { 7876 mWidthCanMeasure = true; 7877 measuredWidth = contentWidth; 7878 } else { 7879 if (measuredWidth < contentWidth) { 7880 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7881 } 7882 mWidthCanMeasure = false; 7883 } 7884 7885 synchronized (this) { 7886 setMeasuredDimension(measuredWidth, measuredHeight); 7887 } 7888 } 7889 7890 @Override 7891 public boolean requestChildRectangleOnScreen(View child, 7892 Rect rect, 7893 boolean immediate) { 7894 if (mNativeClass == 0) { 7895 return false; 7896 } 7897 // don't scroll while in zoom animation. When it is done, we will adjust 7898 // the necessary components (e.g., WebTextView if it is in editing mode) 7899 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7900 return false; 7901 } 7902 7903 rect.offset(child.getLeft() - child.getScrollX(), 7904 child.getTop() - child.getScrollY()); 7905 7906 Rect content = new Rect(viewToContentX(mScrollX), 7907 viewToContentY(mScrollY), 7908 viewToContentX(mScrollX + getWidth() 7909 - getVerticalScrollbarWidth()), 7910 viewToContentY(mScrollY + getViewHeightWithTitle())); 7911 content = nativeSubtractLayers(content); 7912 int screenTop = contentToViewY(content.top); 7913 int screenBottom = contentToViewY(content.bottom); 7914 int height = screenBottom - screenTop; 7915 int scrollYDelta = 0; 7916 7917 if (rect.bottom > screenBottom) { 7918 int oneThirdOfScreenHeight = height / 3; 7919 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7920 // If the rectangle is too tall to fit in the bottom two thirds 7921 // of the screen, place it at the top. 7922 scrollYDelta = rect.top - screenTop; 7923 } else { 7924 // If the rectangle will still fit on screen, we want its 7925 // top to be in the top third of the screen. 7926 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7927 } 7928 } else if (rect.top < screenTop) { 7929 scrollYDelta = rect.top - screenTop; 7930 } 7931 7932 int screenLeft = contentToViewX(content.left); 7933 int screenRight = contentToViewX(content.right); 7934 int width = screenRight - screenLeft; 7935 int scrollXDelta = 0; 7936 7937 if (rect.right > screenRight && rect.left > screenLeft) { 7938 if (rect.width() > width) { 7939 scrollXDelta += (rect.left - screenLeft); 7940 } else { 7941 scrollXDelta += (rect.right - screenRight); 7942 } 7943 } else if (rect.left < screenLeft) { 7944 scrollXDelta -= (screenLeft - rect.left); 7945 } 7946 7947 if ((scrollYDelta | scrollXDelta) != 0) { 7948 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7949 } 7950 7951 return false; 7952 } 7953 7954 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7955 String replace, int newStart, int newEnd) { 7956 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7957 arg.mReplace = replace; 7958 arg.mNewStart = newStart; 7959 arg.mNewEnd = newEnd; 7960 mTextGeneration++; 7961 arg.mTextGeneration = mTextGeneration; 7962 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7963 } 7964 7965 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7966 // check if mWebViewCore has been destroyed 7967 if (mWebViewCore == null) { 7968 return; 7969 } 7970 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7971 arg.mEvent = event; 7972 arg.mCurrentText = currentText; 7973 // Increase our text generation number, and pass it to webcore thread 7974 mTextGeneration++; 7975 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7976 // WebKit's document state is not saved until about to leave the page. 7977 // To make sure the host application, like Browser, has the up to date 7978 // document state when it goes to background, we force to save the 7979 // document state. 7980 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7981 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7982 cursorData(), 1000); 7983 } 7984 7985 /** 7986 * @hide 7987 */ 7988 public synchronized WebViewCore getWebViewCore() { 7989 return mWebViewCore; 7990 } 7991 7992 /** 7993 * Used only by TouchEventQueue to store pending touch events. 7994 */ 7995 private static class QueuedTouch { 7996 long mSequence; 7997 MotionEvent mEvent; // Optional 7998 TouchEventData mTed; // Optional 7999 8000 QueuedTouch mNext; 8001 8002 public QueuedTouch set(TouchEventData ted) { 8003 mSequence = ted.mSequence; 8004 mTed = ted; 8005 mEvent = null; 8006 mNext = null; 8007 return this; 8008 } 8009 8010 public QueuedTouch set(MotionEvent ev, long sequence) { 8011 mEvent = MotionEvent.obtain(ev); 8012 mSequence = sequence; 8013 mTed = null; 8014 mNext = null; 8015 return this; 8016 } 8017 8018 public QueuedTouch add(QueuedTouch other) { 8019 if (other.mSequence < mSequence) { 8020 other.mNext = this; 8021 return other; 8022 } 8023 8024 QueuedTouch insertAt = this; 8025 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 8026 insertAt = insertAt.mNext; 8027 } 8028 other.mNext = insertAt.mNext; 8029 insertAt.mNext = other; 8030 return this; 8031 } 8032 } 8033 8034 /** 8035 * WebView handles touch events asynchronously since some events must be passed to WebKit 8036 * for potentially slower processing. TouchEventQueue serializes touch events regardless 8037 * of which path they take to ensure that no events are ever processed out of order 8038 * by WebView. 8039 */ 8040 private class TouchEventQueue { 8041 private long mNextTouchSequence = Long.MIN_VALUE + 1; 8042 private long mLastHandledTouchSequence = Long.MIN_VALUE; 8043 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8044 8045 // Events waiting to be processed. 8046 private QueuedTouch mTouchEventQueue; 8047 8048 // Known events that are waiting on a response before being enqueued. 8049 private QueuedTouch mPreQueue; 8050 8051 // Pool of QueuedTouch objects saved for later use. 8052 private QueuedTouch mQueuedTouchRecycleBin; 8053 private int mQueuedTouchRecycleCount; 8054 8055 private long mLastEventTime = Long.MAX_VALUE; 8056 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 8057 8058 // milliseconds until we abandon hope of getting all of a previous gesture 8059 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 8060 8061 private QueuedTouch obtainQueuedTouch() { 8062 if (mQueuedTouchRecycleBin != null) { 8063 QueuedTouch result = mQueuedTouchRecycleBin; 8064 mQueuedTouchRecycleBin = result.mNext; 8065 mQueuedTouchRecycleCount--; 8066 return result; 8067 } 8068 return new QueuedTouch(); 8069 } 8070 8071 /** 8072 * Allow events with any currently missing sequence numbers to be skipped in processing. 8073 */ 8074 public void ignoreCurrentlyMissingEvents() { 8075 mIgnoreUntilSequence = mNextTouchSequence; 8076 8077 // Run any events we have available and complete, pre-queued or otherwise. 8078 runQueuedAndPreQueuedEvents(); 8079 } 8080 8081 private void runQueuedAndPreQueuedEvents() { 8082 QueuedTouch qd = mPreQueue; 8083 boolean fromPreQueue = true; 8084 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8085 handleQueuedTouch(qd); 8086 QueuedTouch recycleMe = qd; 8087 if (fromPreQueue) { 8088 mPreQueue = qd.mNext; 8089 } else { 8090 mTouchEventQueue = qd.mNext; 8091 } 8092 recycleQueuedTouch(recycleMe); 8093 mLastHandledTouchSequence++; 8094 8095 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 8096 long nextQueued = mTouchEventQueue != null ? 8097 mTouchEventQueue.mSequence : Long.MAX_VALUE; 8098 fromPreQueue = nextPre < nextQueued; 8099 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 8100 } 8101 } 8102 8103 /** 8104 * Add a TouchEventData to the pre-queue. 8105 * 8106 * An event in the pre-queue is an event that we know about that 8107 * has been sent to webkit, but that we haven't received back and 8108 * enqueued into the normal touch queue yet. If webkit ever times 8109 * out and we need to ignore currently missing events, we'll run 8110 * events from the pre-queue to patch the holes. 8111 * 8112 * @param ted TouchEventData to pre-queue 8113 */ 8114 public void preQueueTouchEventData(TouchEventData ted) { 8115 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 8116 if (mPreQueue == null) { 8117 mPreQueue = newTouch; 8118 } else { 8119 QueuedTouch insertionPoint = mPreQueue; 8120 while (insertionPoint.mNext != null && 8121 insertionPoint.mNext.mSequence < newTouch.mSequence) { 8122 insertionPoint = insertionPoint.mNext; 8123 } 8124 newTouch.mNext = insertionPoint.mNext; 8125 insertionPoint.mNext = newTouch; 8126 } 8127 } 8128 8129 private void recycleQueuedTouch(QueuedTouch qd) { 8130 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 8131 qd.mNext = mQueuedTouchRecycleBin; 8132 mQueuedTouchRecycleBin = qd; 8133 mQueuedTouchRecycleCount++; 8134 } 8135 } 8136 8137 /** 8138 * Reset the touch event queue. This will dump any pending events 8139 * and reset the sequence numbering. 8140 */ 8141 public void reset() { 8142 mNextTouchSequence = Long.MIN_VALUE + 1; 8143 mLastHandledTouchSequence = Long.MIN_VALUE; 8144 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 8145 while (mTouchEventQueue != null) { 8146 QueuedTouch recycleMe = mTouchEventQueue; 8147 mTouchEventQueue = mTouchEventQueue.mNext; 8148 recycleQueuedTouch(recycleMe); 8149 } 8150 while (mPreQueue != null) { 8151 QueuedTouch recycleMe = mPreQueue; 8152 mPreQueue = mPreQueue.mNext; 8153 recycleQueuedTouch(recycleMe); 8154 } 8155 } 8156 8157 /** 8158 * Return the next valid sequence number for tagging incoming touch events. 8159 * @return The next touch event sequence number 8160 */ 8161 public long nextTouchSequence() { 8162 return mNextTouchSequence++; 8163 } 8164 8165 /** 8166 * Enqueue a touch event in the form of TouchEventData. 8167 * The sequence number will be read from the mSequence field of the argument. 8168 * 8169 * If the touch event's sequence number is the next in line to be processed, it will 8170 * be handled before this method returns. Any subsequent events that have already 8171 * been queued will also be processed in their proper order. 8172 * 8173 * @param ted Touch data to be processed in order. 8174 * @return true if the event was processed before returning, false if it was just enqueued. 8175 */ 8176 public boolean enqueueTouchEvent(TouchEventData ted) { 8177 // Remove from the pre-queue if present 8178 QueuedTouch preQueue = mPreQueue; 8179 if (preQueue != null) { 8180 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 8181 // if it was present in the pre-queue, and removed from the pre-queue itself. 8182 if (preQueue.mSequence == ted.mSequence) { 8183 mPreQueue = preQueue.mNext; 8184 } else { 8185 QueuedTouch prev = preQueue; 8186 preQueue = null; 8187 while (prev.mNext != null) { 8188 if (prev.mNext.mSequence == ted.mSequence) { 8189 preQueue = prev.mNext; 8190 prev.mNext = preQueue.mNext; 8191 break; 8192 } else { 8193 prev = prev.mNext; 8194 } 8195 } 8196 } 8197 } 8198 8199 if (ted.mSequence < mLastHandledTouchSequence) { 8200 // Stale event and we already moved on; drop it. (Should not be common.) 8201 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 8202 " received from webcore; ignoring"); 8203 return false; 8204 } 8205 8206 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 8207 return false; 8208 } 8209 8210 // dropStaleGestures above might have fast-forwarded us to 8211 // an event we have already. 8212 runNextQueuedEvents(); 8213 8214 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 8215 if (preQueue != null) { 8216 recycleQueuedTouch(preQueue); 8217 preQueue = null; 8218 } 8219 handleQueuedTouchEventData(ted); 8220 8221 mLastHandledTouchSequence++; 8222 8223 // Do we have any more? Run them if so. 8224 runNextQueuedEvents(); 8225 } else { 8226 // Reuse the pre-queued object if we had it. 8227 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 8228 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8229 } 8230 return true; 8231 } 8232 8233 /** 8234 * Enqueue a touch event in the form of a MotionEvent from the framework. 8235 * 8236 * If the touch event's sequence number is the next in line to be processed, it will 8237 * be handled before this method returns. Any subsequent events that have already 8238 * been queued will also be processed in their proper order. 8239 * 8240 * @param ev MotionEvent to be processed in order 8241 */ 8242 public void enqueueTouchEvent(MotionEvent ev) { 8243 final long sequence = nextTouchSequence(); 8244 8245 if (dropStaleGestures(ev, sequence)) { 8246 return; 8247 } 8248 8249 // dropStaleGestures above might have fast-forwarded us to 8250 // an event we have already. 8251 runNextQueuedEvents(); 8252 8253 if (mLastHandledTouchSequence + 1 == sequence) { 8254 handleQueuedMotionEvent(ev); 8255 8256 mLastHandledTouchSequence++; 8257 8258 // Do we have any more? Run them if so. 8259 runNextQueuedEvents(); 8260 } else { 8261 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 8262 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 8263 } 8264 } 8265 8266 private void runNextQueuedEvents() { 8267 QueuedTouch qd = mTouchEventQueue; 8268 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 8269 handleQueuedTouch(qd); 8270 QueuedTouch recycleMe = qd; 8271 qd = qd.mNext; 8272 recycleQueuedTouch(recycleMe); 8273 mLastHandledTouchSequence++; 8274 } 8275 mTouchEventQueue = qd; 8276 } 8277 8278 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 8279 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 8280 // This is to make sure that we don't attempt to process a tap 8281 // or long press when webkit takes too long to get back to us. 8282 // The movement will be properly confirmed when we process the 8283 // enqueued event later. 8284 final int dx = Math.round(ev.getX()) - mLastTouchX; 8285 final int dy = Math.round(ev.getY()) - mLastTouchY; 8286 if (dx * dx + dy * dy > mTouchSlopSquare) { 8287 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 8288 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 8289 } 8290 } 8291 8292 if (mTouchEventQueue == null) { 8293 return sequence <= mLastHandledTouchSequence; 8294 } 8295 8296 // If we have a new down event and it's been a while since the last event 8297 // we saw, catch up as best we can and keep going. 8298 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 8299 long eventTime = ev.getEventTime(); 8300 long lastHandledEventTime = mLastEventTime; 8301 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 8302 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 8303 "Catching up."); 8304 runQueuedAndPreQueuedEvents(); 8305 8306 // Drop leftovers that we truly don't have. 8307 QueuedTouch qd = mTouchEventQueue; 8308 while (qd != null && qd.mSequence < sequence) { 8309 QueuedTouch recycleMe = qd; 8310 qd = qd.mNext; 8311 recycleQueuedTouch(recycleMe); 8312 } 8313 mTouchEventQueue = qd; 8314 mLastHandledTouchSequence = sequence - 1; 8315 } 8316 } 8317 8318 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 8319 QueuedTouch qd = mTouchEventQueue; 8320 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8321 QueuedTouch recycleMe = qd; 8322 qd = qd.mNext; 8323 recycleQueuedTouch(recycleMe); 8324 } 8325 mTouchEventQueue = qd; 8326 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 8327 } 8328 8329 if (mPreQueue != null) { 8330 // Drop stale prequeued events 8331 QueuedTouch qd = mPreQueue; 8332 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 8333 QueuedTouch recycleMe = qd; 8334 qd = qd.mNext; 8335 recycleQueuedTouch(recycleMe); 8336 } 8337 mPreQueue = qd; 8338 } 8339 8340 return sequence <= mLastHandledTouchSequence; 8341 } 8342 8343 private void handleQueuedTouch(QueuedTouch qt) { 8344 if (qt.mTed != null) { 8345 handleQueuedTouchEventData(qt.mTed); 8346 } else { 8347 handleQueuedMotionEvent(qt.mEvent); 8348 qt.mEvent.recycle(); 8349 } 8350 } 8351 8352 private void handleQueuedMotionEvent(MotionEvent ev) { 8353 mLastEventTime = ev.getEventTime(); 8354 int action = ev.getActionMasked(); 8355 if (ev.getPointerCount() > 1) { // Multi-touch 8356 handleMultiTouchInWebView(ev); 8357 } else { 8358 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 8359 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 8360 // ScaleGestureDetector needs a consistent event stream to operate properly. 8361 // It won't take any action with fewer than two pointers, but it needs to 8362 // update internal bookkeeping state. 8363 detector.onTouchEvent(ev); 8364 } 8365 8366 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 8367 } 8368 } 8369 8370 private void handleQueuedTouchEventData(TouchEventData ted) { 8371 if (ted.mMotionEvent != null) { 8372 mLastEventTime = ted.mMotionEvent.getEventTime(); 8373 } 8374 if (!ted.mReprocess) { 8375 if (ted.mAction == MotionEvent.ACTION_DOWN 8376 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 8377 // if prevent default is called from WebCore, UI 8378 // will not handle the rest of the touch events any 8379 // more. 8380 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8381 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 8382 } else if (ted.mAction == MotionEvent.ACTION_MOVE 8383 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 8384 // the return for the first ACTION_MOVE will decide 8385 // whether UI will handle touch or not. Currently no 8386 // support for alternating prevent default 8387 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 8388 : PREVENT_DEFAULT_NO; 8389 } 8390 if (mPreventDefault == PREVENT_DEFAULT_YES) { 8391 mTouchHighlightRegion.setEmpty(); 8392 } 8393 } else { 8394 if (ted.mPoints.length > 1) { // multi-touch 8395 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 8396 mPreventDefault = PREVENT_DEFAULT_NO; 8397 handleMultiTouchInWebView(ted.mMotionEvent); 8398 } else { 8399 mPreventDefault = PREVENT_DEFAULT_YES; 8400 } 8401 return; 8402 } 8403 8404 // prevent default is not called in WebCore, so the 8405 // message needs to be reprocessed in UI 8406 if (!ted.mNativeResult) { 8407 // Following is for single touch. 8408 switch (ted.mAction) { 8409 case MotionEvent.ACTION_DOWN: 8410 mLastDeferTouchX = ted.mPointsInView[0].x; 8411 mLastDeferTouchY = ted.mPointsInView[0].y; 8412 mDeferTouchMode = TOUCH_INIT_MODE; 8413 break; 8414 case MotionEvent.ACTION_MOVE: { 8415 // no snapping in defer process 8416 int x = ted.mPointsInView[0].x; 8417 int y = ted.mPointsInView[0].y; 8418 8419 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 8420 mDeferTouchMode = TOUCH_DRAG_MODE; 8421 mLastDeferTouchX = x; 8422 mLastDeferTouchY = y; 8423 startScrollingLayer(x, y); 8424 startDrag(); 8425 } 8426 int deltaX = pinLocX((int) (mScrollX 8427 + mLastDeferTouchX - x)) 8428 - mScrollX; 8429 int deltaY = pinLocY((int) (mScrollY 8430 + mLastDeferTouchY - y)) 8431 - mScrollY; 8432 doDrag(deltaX, deltaY); 8433 if (deltaX != 0) mLastDeferTouchX = x; 8434 if (deltaY != 0) mLastDeferTouchY = y; 8435 break; 8436 } 8437 case MotionEvent.ACTION_UP: 8438 case MotionEvent.ACTION_CANCEL: 8439 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 8440 // no fling in defer process 8441 mScroller.springBack(mScrollX, mScrollY, 0, 8442 computeMaxScrollX(), 0, 8443 computeMaxScrollY()); 8444 invalidate(); 8445 WebViewCore.resumePriority(); 8446 WebViewCore.resumeUpdatePicture(mWebViewCore); 8447 } 8448 mDeferTouchMode = TOUCH_DONE_MODE; 8449 break; 8450 case WebViewCore.ACTION_DOUBLETAP: 8451 // doDoubleTap() needs mLastTouchX/Y as anchor 8452 mLastDeferTouchX = ted.mPointsInView[0].x; 8453 mLastDeferTouchY = ted.mPointsInView[0].y; 8454 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 8455 mDeferTouchMode = TOUCH_DONE_MODE; 8456 break; 8457 case WebViewCore.ACTION_LONGPRESS: 8458 HitTestResult hitTest = getHitTestResult(); 8459 if (hitTest != null && hitTest.mType 8460 != HitTestResult.UNKNOWN_TYPE) { 8461 performLongClick(); 8462 } 8463 mDeferTouchMode = TOUCH_DONE_MODE; 8464 break; 8465 } 8466 } 8467 } 8468 } 8469 } 8470 8471 //------------------------------------------------------------------------- 8472 // Methods can be called from a separate thread, like WebViewCore 8473 // If it needs to call the View system, it has to send message. 8474 //------------------------------------------------------------------------- 8475 8476 /** 8477 * General handler to receive message coming from webkit thread 8478 */ 8479 class PrivateHandler extends Handler { 8480 @Override 8481 public void handleMessage(Message msg) { 8482 // exclude INVAL_RECT_MSG_ID since it is frequently output 8483 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 8484 if (msg.what >= FIRST_PRIVATE_MSG_ID 8485 && msg.what <= LAST_PRIVATE_MSG_ID) { 8486 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 8487 - FIRST_PRIVATE_MSG_ID]); 8488 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 8489 && msg.what <= LAST_PACKAGE_MSG_ID) { 8490 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 8491 - FIRST_PACKAGE_MSG_ID]); 8492 } else { 8493 Log.v(LOGTAG, Integer.toString(msg.what)); 8494 } 8495 } 8496 if (mWebViewCore == null) { 8497 // after WebView's destroy() is called, skip handling messages. 8498 return; 8499 } 8500 if (mBlockWebkitViewMessages 8501 && msg.what != WEBCORE_INITIALIZED_MSG_ID) { 8502 // Blocking messages from webkit 8503 return; 8504 } 8505 switch (msg.what) { 8506 case REMEMBER_PASSWORD: { 8507 mDatabase.setUsernamePassword( 8508 msg.getData().getString("host"), 8509 msg.getData().getString("username"), 8510 msg.getData().getString("password")); 8511 ((Message) msg.obj).sendToTarget(); 8512 break; 8513 } 8514 case NEVER_REMEMBER_PASSWORD: { 8515 mDatabase.setUsernamePassword( 8516 msg.getData().getString("host"), null, null); 8517 ((Message) msg.obj).sendToTarget(); 8518 break; 8519 } 8520 case PREVENT_DEFAULT_TIMEOUT: { 8521 // if timeout happens, cancel it so that it won't block UI 8522 // to continue handling touch events 8523 if ((msg.arg1 == MotionEvent.ACTION_DOWN 8524 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 8525 || (msg.arg1 == MotionEvent.ACTION_MOVE 8526 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 8527 cancelWebCoreTouchEvent( 8528 viewToContentX(mLastTouchX + mScrollX), 8529 viewToContentY(mLastTouchY + mScrollY), 8530 true); 8531 } 8532 break; 8533 } 8534 case SCROLL_SELECT_TEXT: { 8535 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 8536 mSentAutoScrollMessage = false; 8537 break; 8538 } 8539 if (mCurrentScrollingLayerId == 0) { 8540 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 8541 } else { 8542 scrollLayerTo(mScrollingLayerRect.left + mAutoScrollX, 8543 mScrollingLayerRect.top + mAutoScrollY); 8544 } 8545 sendEmptyMessageDelayed( 8546 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 8547 break; 8548 } 8549 case UPDATE_SELECTION: { 8550 if (mTouchMode == TOUCH_INIT_MODE 8551 || mTouchMode == TOUCH_SHORTPRESS_MODE 8552 || mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 8553 updateSelection(); 8554 } 8555 break; 8556 } 8557 case SWITCH_TO_SHORTPRESS: { 8558 if (mTouchMode == TOUCH_INIT_MODE) { 8559 if (!sDisableNavcache 8560 && mPreventDefault != PREVENT_DEFAULT_YES) { 8561 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 8562 updateSelection(); 8563 } else { 8564 // set to TOUCH_SHORTPRESS_MODE so that it won't 8565 // trigger double tap any more 8566 mTouchMode = TOUCH_SHORTPRESS_MODE; 8567 } 8568 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 8569 mTouchMode = TOUCH_DONE_MODE; 8570 } 8571 break; 8572 } 8573 case SWITCH_TO_LONGPRESS: { 8574 if (sDisableNavcache) { 8575 removeTouchHighlight(); 8576 } 8577 if (inFullScreenMode() || mDeferTouchProcess) { 8578 TouchEventData ted = new TouchEventData(); 8579 ted.mAction = WebViewCore.ACTION_LONGPRESS; 8580 ted.mIds = new int[1]; 8581 ted.mIds[0] = 0; 8582 ted.mPoints = new Point[1]; 8583 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 8584 viewToContentY(mLastTouchY + mScrollY)); 8585 ted.mPointsInView = new Point[1]; 8586 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 8587 // metaState for long press is tricky. Should it be the 8588 // state when the press started or when the press was 8589 // released? Or some intermediary key state? For 8590 // simplicity for now, we don't set it. 8591 ted.mMetaState = 0; 8592 ted.mReprocess = mDeferTouchProcess; 8593 ted.mNativeLayer = nativeScrollableLayer( 8594 ted.mPoints[0].x, ted.mPoints[0].y, 8595 ted.mNativeLayerRect, null); 8596 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 8597 mTouchEventQueue.preQueueTouchEventData(ted); 8598 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 8599 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 8600 mTouchMode = TOUCH_DONE_MODE; 8601 performLongClick(); 8602 } 8603 break; 8604 } 8605 case RELEASE_SINGLE_TAP: { 8606 doShortPress(); 8607 break; 8608 } 8609 case SCROLL_TO_MSG_ID: { 8610 // arg1 = animate, arg2 = onlyIfImeIsShowing 8611 // obj = Point(x, y) 8612 if (msg.arg2 == 1) { 8613 // This scroll is intended to bring the textfield into 8614 // view, but is only necessary if the IME is showing 8615 InputMethodManager imm = InputMethodManager.peekInstance(); 8616 if (imm == null || !imm.isAcceptingText() 8617 || (!imm.isActive(WebView.this) && (!inEditingMode() 8618 || !imm.isActive(mWebTextView)))) { 8619 break; 8620 } 8621 } 8622 final Point p = (Point) msg.obj; 8623 if (msg.arg1 == 1) { 8624 spawnContentScrollTo(p.x, p.y); 8625 } else { 8626 setContentScrollTo(p.x, p.y); 8627 } 8628 break; 8629 } 8630 case UPDATE_ZOOM_RANGE: { 8631 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 8632 // mScrollX contains the new minPrefWidth 8633 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 8634 break; 8635 } 8636 case UPDATE_ZOOM_DENSITY: { 8637 final float density = (Float) msg.obj; 8638 mZoomManager.updateDefaultZoomDensity(density); 8639 break; 8640 } 8641 case REPLACE_BASE_CONTENT: { 8642 nativeReplaceBaseContent(msg.arg1); 8643 break; 8644 } 8645 case NEW_PICTURE_MSG_ID: { 8646 // called for new content 8647 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 8648 setNewPicture(draw, true); 8649 break; 8650 } 8651 case WEBCORE_INITIALIZED_MSG_ID: 8652 // nativeCreate sets mNativeClass to a non-zero value 8653 String drawableDir = BrowserFrame.getRawResFilename( 8654 BrowserFrame.DRAWABLEDIR, mContext); 8655 WindowManager windowManager = 8656 (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE); 8657 Display display = windowManager.getDefaultDisplay(); 8658 nativeCreate(msg.arg1, drawableDir, 8659 ActivityManager.isHighEndGfx(display)); 8660 if (mDelaySetPicture != null) { 8661 setNewPicture(mDelaySetPicture, true); 8662 mDelaySetPicture = null; 8663 } 8664 if (mIsPaused) { 8665 nativeSetPauseDrawing(mNativeClass, true); 8666 } 8667 break; 8668 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 8669 // Make sure that the textfield is currently focused 8670 // and representing the same node as the pointer. 8671 if (inEditingMode() && 8672 mWebTextView.isSameTextField(msg.arg1)) { 8673 if (msg.arg2 == mTextGeneration) { 8674 String text = (String) msg.obj; 8675 if (null == text) { 8676 text = ""; 8677 } 8678 mWebTextView.setTextAndKeepSelection(text); 8679 } 8680 } 8681 break; 8682 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 8683 displaySoftKeyboard(true); 8684 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 8685 case UPDATE_TEXT_SELECTION_MSG_ID: 8686 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 8687 (WebViewCore.TextSelectionData) msg.obj); 8688 break; 8689 case FORM_DID_BLUR: 8690 if (inEditingMode() 8691 && mWebTextView.isSameTextField(msg.arg1)) { 8692 hideSoftKeyboard(); 8693 } 8694 break; 8695 case RETURN_LABEL: 8696 if (inEditingMode() 8697 && mWebTextView.isSameTextField(msg.arg1)) { 8698 mWebTextView.setHint((String) msg.obj); 8699 InputMethodManager imm 8700 = InputMethodManager.peekInstance(); 8701 // The hint is propagated to the IME in 8702 // onCreateInputConnection. If the IME is already 8703 // active, restart it so that its hint text is updated. 8704 if (imm != null && imm.isActive(mWebTextView)) { 8705 imm.restartInput(mWebTextView); 8706 } 8707 } 8708 break; 8709 case UNHANDLED_NAV_KEY: 8710 navHandledKey(msg.arg1, 1, false, 0); 8711 break; 8712 case UPDATE_TEXT_ENTRY_MSG_ID: 8713 // this is sent after finishing resize in WebViewCore. Make 8714 // sure the text edit box is still on the screen. 8715 if (inEditingMode() && nativeCursorIsTextInput()) { 8716 updateWebTextViewPosition(); 8717 } 8718 break; 8719 case CLEAR_TEXT_ENTRY: 8720 clearTextEntry(); 8721 break; 8722 case INVAL_RECT_MSG_ID: { 8723 Rect r = (Rect)msg.obj; 8724 if (r == null) { 8725 invalidate(); 8726 } else { 8727 // we need to scale r from content into view coords, 8728 // which viewInvalidate() does for us 8729 viewInvalidate(r.left, r.top, r.right, r.bottom); 8730 } 8731 break; 8732 } 8733 case REQUEST_FORM_DATA: 8734 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 8735 if (mWebTextView.isSameTextField(msg.arg1)) { 8736 mWebTextView.setAdapterCustom(adapter); 8737 } 8738 break; 8739 8740 case LONG_PRESS_CENTER: 8741 // as this is shared by keydown and trackballdown, reset all 8742 // the states 8743 mGotCenterDown = false; 8744 mTrackballDown = false; 8745 performLongClick(); 8746 break; 8747 8748 case WEBCORE_NEED_TOUCH_EVENTS: 8749 mForwardTouchEvents = (msg.arg1 != 0); 8750 break; 8751 8752 case PREVENT_TOUCH_ID: 8753 if (inFullScreenMode()) { 8754 break; 8755 } 8756 TouchEventData ted = (TouchEventData) msg.obj; 8757 8758 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 8759 // WebCore is responding to us; remove pending timeout. 8760 // It will be re-posted when needed. 8761 removeMessages(PREVENT_DEFAULT_TIMEOUT); 8762 } 8763 break; 8764 8765 case REQUEST_KEYBOARD: 8766 if (msg.arg1 == 0) { 8767 hideSoftKeyboard(); 8768 } else { 8769 displaySoftKeyboard(false); 8770 } 8771 break; 8772 8773 case FIND_AGAIN: 8774 // Ignore if find has been dismissed. 8775 if (mFindIsUp && mFindCallback != null) { 8776 mFindCallback.findAll(); 8777 } 8778 break; 8779 8780 case DRAG_HELD_MOTIONLESS: 8781 mHeldMotionless = MOTIONLESS_TRUE; 8782 invalidate(); 8783 // fall through to keep scrollbars awake 8784 8785 case AWAKEN_SCROLL_BARS: 8786 if (mTouchMode == TOUCH_DRAG_MODE 8787 && mHeldMotionless == MOTIONLESS_TRUE) { 8788 awakenScrollBars(ViewConfiguration 8789 .getScrollDefaultDelay(), false); 8790 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8791 .obtainMessage(AWAKEN_SCROLL_BARS), 8792 ViewConfiguration.getScrollDefaultDelay()); 8793 } 8794 break; 8795 8796 case DO_MOTION_UP: 8797 doMotionUp(msg.arg1, msg.arg2); 8798 break; 8799 8800 case SCREEN_ON: 8801 setKeepScreenOn(msg.arg1 == 1); 8802 break; 8803 8804 case ENTER_FULLSCREEN_VIDEO: 8805 int layerId = msg.arg1; 8806 8807 String url = (String) msg.obj; 8808 if (mHTML5VideoViewProxy != null) { 8809 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8810 } 8811 break; 8812 8813 case EXIT_FULLSCREEN_VIDEO: 8814 if (mHTML5VideoViewProxy != null) { 8815 mHTML5VideoViewProxy.exitFullScreenVideo(); 8816 } 8817 break; 8818 8819 case SHOW_FULLSCREEN: { 8820 View view = (View) msg.obj; 8821 int orientation = msg.arg1; 8822 int npp = msg.arg2; 8823 8824 if (inFullScreenMode()) { 8825 Log.w(LOGTAG, "Should not have another full screen."); 8826 dismissFullScreenMode(); 8827 } 8828 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, orientation, npp); 8829 mFullScreenHolder.setContentView(view); 8830 mFullScreenHolder.show(); 8831 invalidate(); 8832 8833 break; 8834 } 8835 case HIDE_FULLSCREEN: 8836 dismissFullScreenMode(); 8837 break; 8838 8839 case DOM_FOCUS_CHANGED: 8840 if (inEditingMode()) { 8841 nativeClearCursor(); 8842 rebuildWebTextView(); 8843 } 8844 break; 8845 8846 case SHOW_RECT_MSG_ID: { 8847 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8848 int x = mScrollX; 8849 int left = contentToViewX(data.mLeft); 8850 int width = contentToViewDimension(data.mWidth); 8851 int maxWidth = contentToViewDimension(data.mContentWidth); 8852 int viewWidth = getViewWidth(); 8853 if (width < viewWidth) { 8854 // center align 8855 x += left + width / 2 - mScrollX - viewWidth / 2; 8856 } else { 8857 x += (int) (left + data.mXPercentInDoc * width 8858 - mScrollX - data.mXPercentInView * viewWidth); 8859 } 8860 if (DebugFlags.WEB_VIEW) { 8861 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8862 width + ",maxWidth=" + maxWidth + 8863 ",viewWidth=" + viewWidth + ",x=" 8864 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8865 ",xPercentInView=" + data.mXPercentInView+ ")"); 8866 } 8867 // use the passing content width to cap x as the current 8868 // mContentWidth may not be updated yet 8869 x = Math.max(0, 8870 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8871 int top = contentToViewY(data.mTop); 8872 int height = contentToViewDimension(data.mHeight); 8873 int maxHeight = contentToViewDimension(data.mContentHeight); 8874 int viewHeight = getViewHeight(); 8875 int y = (int) (top + data.mYPercentInDoc * height - 8876 data.mYPercentInView * viewHeight); 8877 if (DebugFlags.WEB_VIEW) { 8878 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8879 height + ",maxHeight=" + maxHeight + 8880 ",viewHeight=" + viewHeight + ",y=" 8881 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8882 ",yPercentInView=" + data.mYPercentInView+ ")"); 8883 } 8884 // use the passing content height to cap y as the current 8885 // mContentHeight may not be updated yet 8886 y = Math.max(0, 8887 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8888 // We need to take into account the visible title height 8889 // when scrolling since y is an absolute view position. 8890 y = Math.max(0, y - getVisibleTitleHeightImpl()); 8891 scrollTo(x, y); 8892 } 8893 break; 8894 8895 case CENTER_FIT_RECT: 8896 centerFitRect((Rect)msg.obj); 8897 break; 8898 8899 case SET_SCROLLBAR_MODES: 8900 mHorizontalScrollBarMode = msg.arg1; 8901 mVerticalScrollBarMode = msg.arg2; 8902 break; 8903 8904 case SELECTION_STRING_CHANGED: 8905 if (mAccessibilityInjector != null) { 8906 String selectionString = (String) msg.obj; 8907 mAccessibilityInjector.onSelectionStringChange(selectionString); 8908 } 8909 break; 8910 8911 case HIT_TEST_RESULT: 8912 WebKitHitTest hit = (WebKitHitTest) msg.obj; 8913 mFocusedNode = hit; 8914 setTouchHighlightRects(hit); 8915 if (hit == null) { 8916 mInitialHitTestResult = null; 8917 } else { 8918 mInitialHitTestResult = new HitTestResult(); 8919 if (hit.mLinkUrl != null) { 8920 mInitialHitTestResult.mType = HitTestResult.SRC_ANCHOR_TYPE; 8921 mInitialHitTestResult.mExtra = hit.mLinkUrl; 8922 if (hit.mImageUrl != null) { 8923 mInitialHitTestResult.mType = HitTestResult.SRC_IMAGE_ANCHOR_TYPE; 8924 mInitialHitTestResult.mExtra = hit.mImageUrl; 8925 } 8926 } else if (hit.mImageUrl != null) { 8927 mInitialHitTestResult.mType = HitTestResult.IMAGE_TYPE; 8928 mInitialHitTestResult.mExtra = hit.mImageUrl; 8929 } else if (hit.mEditable) { 8930 mInitialHitTestResult.mType = HitTestResult.EDIT_TEXT_TYPE; 8931 } 8932 } 8933 break; 8934 8935 case SAVE_WEBARCHIVE_FINISHED: 8936 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8937 if (saveMessage.mCallback != null) { 8938 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8939 } 8940 break; 8941 8942 case SET_AUTOFILLABLE: 8943 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8944 if (mWebTextView != null) { 8945 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8946 rebuildWebTextView(); 8947 } 8948 break; 8949 8950 case AUTOFILL_COMPLETE: 8951 if (mWebTextView != null) { 8952 // Clear the WebTextView adapter when AutoFill finishes 8953 // so that the drop down gets cleared. 8954 mWebTextView.setAdapterCustom(null); 8955 } 8956 break; 8957 8958 case SELECT_AT: 8959 nativeSelectAt(msg.arg1, msg.arg2); 8960 break; 8961 8962 case COPY_TO_CLIPBOARD: 8963 copyToClipboard((String) msg.obj); 8964 break; 8965 8966 default: 8967 super.handleMessage(msg); 8968 break; 8969 } 8970 } 8971 } 8972 8973 private void setTouchHighlightRects(WebKitHitTest hit) { 8974 Rect[] rects = hit != null ? hit.mTouchRects : null; 8975 if (!mTouchHighlightRegion.isEmpty()) { 8976 invalidate(mTouchHighlightRegion.getBounds()); 8977 mTouchHighlightRegion.setEmpty(); 8978 } 8979 if (rects != null) { 8980 mTouchHightlightPaint.setColor(hit.mTapHighlightColor); 8981 for (Rect rect : rects) { 8982 Rect viewRect = contentToViewRect(rect); 8983 // some sites, like stories in nytimes.com, set 8984 // mouse event handler in the top div. It is not 8985 // user friendly to highlight the div if it covers 8986 // more than half of the screen. 8987 if (viewRect.width() < getWidth() >> 1 8988 || viewRect.height() < getHeight() >> 1) { 8989 mTouchHighlightRegion.union(viewRect); 8990 } else { 8991 Log.w(LOGTAG, "Skip the huge selection rect:" 8992 + viewRect); 8993 } 8994 } 8995 invalidate(mTouchHighlightRegion.getBounds()); 8996 } 8997 } 8998 8999 /** @hide Called by JNI when pages are swapped (only occurs with hardware 9000 * acceleration) */ 9001 protected void pageSwapCallback(boolean notifyAnimationStarted) { 9002 if (inEditingMode()) { 9003 didUpdateWebTextViewDimensions(ANYWHERE); 9004 } 9005 if (notifyAnimationStarted) { 9006 mWebViewCore.sendMessage(EventHub.NOTIFY_ANIMATION_STARTED); 9007 } 9008 } 9009 9010 void setNewPicture(final WebViewCore.DrawData draw, boolean updateBaseLayer) { 9011 if (mNativeClass == 0) { 9012 if (mDelaySetPicture != null) { 9013 throw new IllegalStateException("Tried to setNewPicture with" 9014 + " a delay picture already set! (memory leak)"); 9015 } 9016 // Not initialized yet, delay set 9017 mDelaySetPicture = draw; 9018 return; 9019 } 9020 WebViewCore.ViewState viewState = draw.mViewState; 9021 boolean isPictureAfterFirstLayout = viewState != null; 9022 9023 if (updateBaseLayer) { 9024 // Request a callback on pageSwap (to reposition the webtextview) 9025 boolean registerPageSwapCallback = 9026 !mZoomManager.isFixedLengthAnimationInProgress() && inEditingMode(); 9027 9028 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 9029 getSettings().getShowVisualIndicator(), 9030 isPictureAfterFirstLayout, registerPageSwapCallback); 9031 } 9032 final Point viewSize = draw.mViewSize; 9033 // We update the layout (i.e. request a layout from the 9034 // view system) if the last view size that we sent to 9035 // WebCore matches the view size of the picture we just 9036 // received in the fixed dimension. 9037 final boolean updateLayout = viewSize.x == mLastWidthSent 9038 && viewSize.y == mLastHeightSent; 9039 // Don't send scroll event for picture coming from webkit, 9040 // since the new picture may cause a scroll event to override 9041 // the saved history scroll position. 9042 mSendScrollEvent = false; 9043 recordNewContentSize(draw.mContentSize.x, 9044 draw.mContentSize.y, updateLayout); 9045 if (isPictureAfterFirstLayout) { 9046 // Reset the last sent data here since dealing with new page. 9047 mLastWidthSent = 0; 9048 mZoomManager.onFirstLayout(draw); 9049 int scrollX = viewState.mShouldStartScrolledRight 9050 ? getContentWidth() : viewState.mScrollX; 9051 int scrollY = viewState.mScrollY; 9052 setContentScrollTo(scrollX, scrollY); 9053 if (!mDrawHistory) { 9054 // As we are on a new page, remove the WebTextView. This 9055 // is necessary for page loads driven by webkit, and in 9056 // particular when the user was on a password field, so 9057 // the WebTextView was visible. 9058 clearTextEntry(); 9059 } 9060 } 9061 mSendScrollEvent = true; 9062 9063 if (DebugFlags.WEB_VIEW) { 9064 Rect b = draw.mInvalRegion.getBounds(); 9065 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 9066 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 9067 } 9068 invalidateContentRect(draw.mInvalRegion.getBounds()); 9069 9070 if (mPictureListener != null) { 9071 mPictureListener.onNewPicture(WebView.this, capturePicture()); 9072 } 9073 9074 // update the zoom information based on the new picture 9075 mZoomManager.onNewPicture(draw); 9076 9077 if (draw.mFocusSizeChanged && inEditingMode()) { 9078 mFocusSizeChanged = true; 9079 } 9080 if (isPictureAfterFirstLayout) { 9081 mViewManager.postReadyToDrawAll(); 9082 } 9083 } 9084 9085 /** 9086 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 9087 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 9088 */ 9089 private void updateTextSelectionFromMessage(int nodePointer, 9090 int textGeneration, WebViewCore.TextSelectionData data) { 9091 if (inEditingMode() 9092 && mWebTextView.isSameTextField(nodePointer) 9093 && textGeneration == mTextGeneration) { 9094 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 9095 } 9096 } 9097 9098 // Class used to use a dropdown for a <select> element 9099 private class InvokeListBox implements Runnable { 9100 // Whether the listbox allows multiple selection. 9101 private boolean mMultiple; 9102 // Passed in to a list with multiple selection to tell 9103 // which items are selected. 9104 private int[] mSelectedArray; 9105 // Passed in to a list with single selection to tell 9106 // where the initial selection is. 9107 private int mSelection; 9108 9109 private Container[] mContainers; 9110 9111 // Need these to provide stable ids to my ArrayAdapter, 9112 // which normally does not have stable ids. (Bug 1250098) 9113 private class Container extends Object { 9114 /** 9115 * Possible values for mEnabled. Keep in sync with OptionStatus in 9116 * WebViewCore.cpp 9117 */ 9118 final static int OPTGROUP = -1; 9119 final static int OPTION_DISABLED = 0; 9120 final static int OPTION_ENABLED = 1; 9121 9122 String mString; 9123 int mEnabled; 9124 int mId; 9125 9126 @Override 9127 public String toString() { 9128 return mString; 9129 } 9130 } 9131 9132 /** 9133 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 9134 * and allow filtering. 9135 */ 9136 private class MyArrayListAdapter extends ArrayAdapter<Container> { 9137 public MyArrayListAdapter() { 9138 super(mContext, 9139 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 9140 com.android.internal.R.layout.webview_select_singlechoice, 9141 mContainers); 9142 } 9143 9144 @Override 9145 public View getView(int position, View convertView, 9146 ViewGroup parent) { 9147 // Always pass in null so that we will get a new CheckedTextView 9148 // Otherwise, an item which was previously used as an <optgroup> 9149 // element (i.e. has no check), could get used as an <option> 9150 // element, which needs a checkbox/radio, but it would not have 9151 // one. 9152 convertView = super.getView(position, null, parent); 9153 Container c = item(position); 9154 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 9155 // ListView does not draw dividers between disabled and 9156 // enabled elements. Use a LinearLayout to provide dividers 9157 LinearLayout layout = new LinearLayout(mContext); 9158 layout.setOrientation(LinearLayout.VERTICAL); 9159 if (position > 0) { 9160 View dividerTop = new View(mContext); 9161 dividerTop.setBackgroundResource( 9162 android.R.drawable.divider_horizontal_bright); 9163 layout.addView(dividerTop); 9164 } 9165 9166 if (Container.OPTGROUP == c.mEnabled) { 9167 // Currently select_dialog_multichoice uses CheckedTextViews. 9168 // If that changes, the class cast will no longer be valid. 9169 if (mMultiple) { 9170 Assert.assertTrue(convertView instanceof CheckedTextView); 9171 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 9172 } 9173 } else { 9174 // c.mEnabled == Container.OPTION_DISABLED 9175 // Draw the disabled element in a disabled state. 9176 convertView.setEnabled(false); 9177 } 9178 9179 layout.addView(convertView); 9180 if (position < getCount() - 1) { 9181 View dividerBottom = new View(mContext); 9182 dividerBottom.setBackgroundResource( 9183 android.R.drawable.divider_horizontal_bright); 9184 layout.addView(dividerBottom); 9185 } 9186 return layout; 9187 } 9188 return convertView; 9189 } 9190 9191 @Override 9192 public boolean hasStableIds() { 9193 // AdapterView's onChanged method uses this to determine whether 9194 // to restore the old state. Return false so that the old (out 9195 // of date) state does not replace the new, valid state. 9196 return false; 9197 } 9198 9199 private Container item(int position) { 9200 if (position < 0 || position >= getCount()) { 9201 return null; 9202 } 9203 return getItem(position); 9204 } 9205 9206 @Override 9207 public long getItemId(int position) { 9208 Container item = item(position); 9209 if (item == null) { 9210 return -1; 9211 } 9212 return item.mId; 9213 } 9214 9215 @Override 9216 public boolean areAllItemsEnabled() { 9217 return false; 9218 } 9219 9220 @Override 9221 public boolean isEnabled(int position) { 9222 Container item = item(position); 9223 if (item == null) { 9224 return false; 9225 } 9226 return Container.OPTION_ENABLED == item.mEnabled; 9227 } 9228 } 9229 9230 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 9231 mMultiple = true; 9232 mSelectedArray = selected; 9233 9234 int length = array.length; 9235 mContainers = new Container[length]; 9236 for (int i = 0; i < length; i++) { 9237 mContainers[i] = new Container(); 9238 mContainers[i].mString = array[i]; 9239 mContainers[i].mEnabled = enabled[i]; 9240 mContainers[i].mId = i; 9241 } 9242 } 9243 9244 private InvokeListBox(String[] array, int[] enabled, int selection) { 9245 mSelection = selection; 9246 mMultiple = false; 9247 9248 int length = array.length; 9249 mContainers = new Container[length]; 9250 for (int i = 0; i < length; i++) { 9251 mContainers[i] = new Container(); 9252 mContainers[i].mString = array[i]; 9253 mContainers[i].mEnabled = enabled[i]; 9254 mContainers[i].mId = i; 9255 } 9256 } 9257 9258 /* 9259 * Whenever the data set changes due to filtering, this class ensures 9260 * that the checked item remains checked. 9261 */ 9262 private class SingleDataSetObserver extends DataSetObserver { 9263 private long mCheckedId; 9264 private ListView mListView; 9265 private Adapter mAdapter; 9266 9267 /* 9268 * Create a new observer. 9269 * @param id The ID of the item to keep checked. 9270 * @param l ListView for getting and clearing the checked states 9271 * @param a Adapter for getting the IDs 9272 */ 9273 public SingleDataSetObserver(long id, ListView l, Adapter a) { 9274 mCheckedId = id; 9275 mListView = l; 9276 mAdapter = a; 9277 } 9278 9279 @Override 9280 public void onChanged() { 9281 // The filter may have changed which item is checked. Find the 9282 // item that the ListView thinks is checked. 9283 int position = mListView.getCheckedItemPosition(); 9284 long id = mAdapter.getItemId(position); 9285 if (mCheckedId != id) { 9286 // Clear the ListView's idea of the checked item, since 9287 // it is incorrect 9288 mListView.clearChoices(); 9289 // Search for mCheckedId. If it is in the filtered list, 9290 // mark it as checked 9291 int count = mAdapter.getCount(); 9292 for (int i = 0; i < count; i++) { 9293 if (mAdapter.getItemId(i) == mCheckedId) { 9294 mListView.setItemChecked(i, true); 9295 break; 9296 } 9297 } 9298 } 9299 } 9300 } 9301 9302 @Override 9303 public void run() { 9304 final ListView listView = (ListView) LayoutInflater.from(mContext) 9305 .inflate(com.android.internal.R.layout.select_dialog, null); 9306 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 9307 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 9308 .setView(listView).setCancelable(true) 9309 .setInverseBackgroundForced(true); 9310 9311 if (mMultiple) { 9312 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 9313 @Override 9314 public void onClick(DialogInterface dialog, int which) { 9315 mWebViewCore.sendMessage( 9316 EventHub.LISTBOX_CHOICES, 9317 adapter.getCount(), 0, 9318 listView.getCheckedItemPositions()); 9319 }}); 9320 b.setNegativeButton(android.R.string.cancel, 9321 new DialogInterface.OnClickListener() { 9322 @Override 9323 public void onClick(DialogInterface dialog, int which) { 9324 mWebViewCore.sendMessage( 9325 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9326 }}); 9327 } 9328 mListBoxDialog = b.create(); 9329 listView.setAdapter(adapter); 9330 listView.setFocusableInTouchMode(true); 9331 // There is a bug (1250103) where the checks in a ListView with 9332 // multiple items selected are associated with the positions, not 9333 // the ids, so the items do not properly retain their checks when 9334 // filtered. Do not allow filtering on multiple lists until 9335 // that bug is fixed. 9336 9337 listView.setTextFilterEnabled(!mMultiple); 9338 if (mMultiple) { 9339 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 9340 int length = mSelectedArray.length; 9341 for (int i = 0; i < length; i++) { 9342 listView.setItemChecked(mSelectedArray[i], true); 9343 } 9344 } else { 9345 listView.setOnItemClickListener(new OnItemClickListener() { 9346 @Override 9347 public void onItemClick(AdapterView<?> parent, View v, 9348 int position, long id) { 9349 // Rather than sending the message right away, send it 9350 // after the page regains focus. 9351 mListBoxMessage = Message.obtain(null, 9352 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 9353 mListBoxDialog.dismiss(); 9354 mListBoxDialog = null; 9355 } 9356 }); 9357 if (mSelection != -1) { 9358 listView.setSelection(mSelection); 9359 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 9360 listView.setItemChecked(mSelection, true); 9361 DataSetObserver observer = new SingleDataSetObserver( 9362 adapter.getItemId(mSelection), listView, adapter); 9363 adapter.registerDataSetObserver(observer); 9364 } 9365 } 9366 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 9367 @Override 9368 public void onCancel(DialogInterface dialog) { 9369 mWebViewCore.sendMessage( 9370 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 9371 mListBoxDialog = null; 9372 } 9373 }); 9374 mListBoxDialog.show(); 9375 } 9376 } 9377 9378 private Message mListBoxMessage; 9379 9380 /* 9381 * Request a dropdown menu for a listbox with multiple selection. 9382 * 9383 * @param array Labels for the listbox. 9384 * @param enabledArray State for each element in the list. See static 9385 * integers in Container class. 9386 * @param selectedArray Which positions are initally selected. 9387 */ 9388 void requestListBox(String[] array, int[] enabledArray, int[] 9389 selectedArray) { 9390 mPrivateHandler.post( 9391 new InvokeListBox(array, enabledArray, selectedArray)); 9392 } 9393 9394 /* 9395 * Request a dropdown menu for a listbox with single selection or a single 9396 * <select> element. 9397 * 9398 * @param array Labels for the listbox. 9399 * @param enabledArray State for each element in the list. See static 9400 * integers in Container class. 9401 * @param selection Which position is initally selected. 9402 */ 9403 void requestListBox(String[] array, int[] enabledArray, int selection) { 9404 mPrivateHandler.post( 9405 new InvokeListBox(array, enabledArray, selection)); 9406 } 9407 9408 // called by JNI 9409 private void sendMoveFocus(int frame, int node) { 9410 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 9411 new WebViewCore.CursorData(frame, node, 0, 0)); 9412 } 9413 9414 // called by JNI 9415 private void sendMoveMouse(int frame, int node, int x, int y) { 9416 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 9417 new WebViewCore.CursorData(frame, node, x, y)); 9418 } 9419 9420 /* 9421 * Send a mouse move event to the webcore thread. 9422 * 9423 * @param removeFocus Pass true to remove the WebTextView, if present. 9424 * @param stopPaintingCaret Stop drawing the blinking caret if true. 9425 * called by JNI 9426 */ 9427 @SuppressWarnings("unused") 9428 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 9429 if (removeFocus) { 9430 clearTextEntry(); 9431 } 9432 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 9433 stopPaintingCaret ? 1 : 0, 0, 9434 cursorData()); 9435 } 9436 9437 /** 9438 * Called by JNI to send a message to the webcore thread that the user 9439 * touched the webpage. 9440 * @param touchGeneration Generation number of the touch, to ignore touches 9441 * after a new one has been generated. 9442 * @param frame Pointer to the frame holding the node that was touched. 9443 * @param node Pointer to the node touched. 9444 * @param x x-position of the touch. 9445 * @param y y-position of the touch. 9446 */ 9447 private void sendMotionUp(int touchGeneration, 9448 int frame, int node, int x, int y) { 9449 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 9450 touchUpData.mMoveGeneration = touchGeneration; 9451 touchUpData.mFrame = frame; 9452 touchUpData.mNode = node; 9453 touchUpData.mX = x; 9454 touchUpData.mY = y; 9455 touchUpData.mNativeLayer = nativeScrollableLayer( 9456 x, y, touchUpData.mNativeLayerRect, null); 9457 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 9458 } 9459 9460 9461 private int getScaledMaxXScroll() { 9462 int width; 9463 if (mHeightCanMeasure == false) { 9464 width = getViewWidth() / 4; 9465 } else { 9466 Rect visRect = new Rect(); 9467 calcOurVisibleRect(visRect); 9468 width = visRect.width() / 2; 9469 } 9470 // FIXME the divisor should be retrieved from somewhere 9471 return viewToContentX(width); 9472 } 9473 9474 private int getScaledMaxYScroll() { 9475 int height; 9476 if (mHeightCanMeasure == false) { 9477 height = getViewHeight() / 4; 9478 } else { 9479 Rect visRect = new Rect(); 9480 calcOurVisibleRect(visRect); 9481 height = visRect.height() / 2; 9482 } 9483 // FIXME the divisor should be retrieved from somewhere 9484 // the closest thing today is hard-coded into ScrollView.java 9485 // (from ScrollView.java, line 363) int maxJump = height/2; 9486 return Math.round(height * mZoomManager.getInvScale()); 9487 } 9488 9489 /** 9490 * Called by JNI to invalidate view 9491 */ 9492 private void viewInvalidate() { 9493 invalidate(); 9494 } 9495 9496 /** 9497 * Pass the key directly to the page. This assumes that 9498 * nativePageShouldHandleShiftAndArrows() returned true. 9499 */ 9500 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 9501 int keyEventAction; 9502 int eventHubAction; 9503 if (down) { 9504 keyEventAction = KeyEvent.ACTION_DOWN; 9505 eventHubAction = EventHub.KEY_DOWN; 9506 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 9507 } else { 9508 keyEventAction = KeyEvent.ACTION_UP; 9509 eventHubAction = EventHub.KEY_UP; 9510 } 9511 9512 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 9513 1, (metaState & KeyEvent.META_SHIFT_ON) 9514 | (metaState & KeyEvent.META_ALT_ON) 9515 | (metaState & KeyEvent.META_SYM_ON) 9516 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 9517 mWebViewCore.sendMessage(eventHubAction, event); 9518 } 9519 9520 // return true if the key was handled 9521 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 9522 long time) { 9523 if (mNativeClass == 0) { 9524 return false; 9525 } 9526 mInitialHitTestResult = null; 9527 mLastCursorTime = time; 9528 mLastCursorBounds = nativeGetCursorRingBounds(); 9529 boolean keyHandled 9530 = nativeMoveCursor(keyCode, count, noScroll) == false; 9531 if (DebugFlags.WEB_VIEW) { 9532 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 9533 + " mLastCursorTime=" + mLastCursorTime 9534 + " handled=" + keyHandled); 9535 } 9536 if (keyHandled == false) { 9537 return keyHandled; 9538 } 9539 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 9540 if (contentCursorRingBounds.isEmpty()) return keyHandled; 9541 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 9542 // set last touch so that context menu related functions will work 9543 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 9544 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 9545 if (mHeightCanMeasure == false) { 9546 return keyHandled; 9547 } 9548 Rect visRect = new Rect(); 9549 calcOurVisibleRect(visRect); 9550 Rect outset = new Rect(visRect); 9551 int maxXScroll = visRect.width() / 2; 9552 int maxYScroll = visRect.height() / 2; 9553 outset.inset(-maxXScroll, -maxYScroll); 9554 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 9555 return keyHandled; 9556 } 9557 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 9558 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 9559 maxXScroll); 9560 if (maxH > 0) { 9561 pinScrollBy(maxH, 0, true, 0); 9562 } else { 9563 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 9564 -maxXScroll); 9565 if (maxH < 0) { 9566 pinScrollBy(maxH, 0, true, 0); 9567 } 9568 } 9569 if (mLastCursorBounds.isEmpty()) return keyHandled; 9570 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 9571 return keyHandled; 9572 } 9573 if (DebugFlags.WEB_VIEW) { 9574 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 9575 + contentCursorRingBounds); 9576 } 9577 requestRectangleOnScreen(viewCursorRingBounds); 9578 return keyHandled; 9579 } 9580 9581 /** 9582 * @return Whether accessibility script has been injected. 9583 */ 9584 private boolean accessibilityScriptInjected() { 9585 // TODO: Maybe the injected script should announce its presence in 9586 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 9587 // will check that as one of the conditions it looks for 9588 return mAccessibilityScriptInjected; 9589 } 9590 9591 /** 9592 * Set the background color. It's white by default. Pass 9593 * zero to make the view transparent. 9594 * @param color the ARGB color described by Color.java 9595 */ 9596 @Override 9597 public void setBackgroundColor(int color) { 9598 mBackgroundColor = color; 9599 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 9600 } 9601 9602 /** 9603 * @deprecated This method is now obsolete. 9604 */ 9605 @Deprecated 9606 public void debugDump() { 9607 checkThread(); 9608 nativeDebugDump(); 9609 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 9610 } 9611 9612 /** 9613 * Draw the HTML page into the specified canvas. This call ignores any 9614 * view-specific zoom, scroll offset, or other changes. It does not draw 9615 * any view-specific chrome, such as progress or URL bars. 9616 * 9617 * @hide only needs to be accessible to Browser and testing 9618 */ 9619 public void drawPage(Canvas canvas) { 9620 calcOurContentVisibleRectF(mVisibleContentRect); 9621 nativeDraw(canvas, mVisibleContentRect, 0, 0, false); 9622 } 9623 9624 /** 9625 * Enable the communication b/t the webView and VideoViewProxy 9626 * 9627 * @hide only used by the Browser 9628 */ 9629 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 9630 mHTML5VideoViewProxy = proxy; 9631 } 9632 9633 /** 9634 * Set the time to wait between passing touches to WebCore. See also the 9635 * TOUCH_SENT_INTERVAL member for further discussion. 9636 * 9637 * @hide This is only used by the DRT test application. 9638 */ 9639 public void setTouchInterval(int interval) { 9640 mCurrentTouchInterval = interval; 9641 } 9642 9643 /** 9644 * Copy text into the clipboard. This is called indirectly from 9645 * WebViewCore. 9646 * @param text The text to put into the clipboard. 9647 */ 9648 private void copyToClipboard(String text) { 9649 ClipboardManager cm = (ClipboardManager)getContext() 9650 .getSystemService(Context.CLIPBOARD_SERVICE); 9651 ClipData clip = ClipData.newPlainText(getTitle(), text); 9652 cm.setPrimaryClip(clip); 9653 } 9654 9655 /** 9656 * Update our cache with updatedText. 9657 * @param updatedText The new text to put in our cache. 9658 * @hide 9659 */ 9660 protected void updateCachedTextfield(String updatedText) { 9661 // Also place our generation number so that when we look at the cache 9662 // we recognize that it is up to date. 9663 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 9664 } 9665 9666 /*package*/ void autoFillForm(int autoFillQueryId) { 9667 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 9668 } 9669 9670 /* package */ ViewManager getViewManager() { 9671 return mViewManager; 9672 } 9673 9674 private static void checkThread() { 9675 if (Looper.myLooper() != Looper.getMainLooper()) { 9676 Throwable throwable = new Throwable( 9677 "Warning: A WebView method was called on thread '" + 9678 Thread.currentThread().getName() + "'. " + 9679 "All WebView methods must be called on the UI thread. " + 9680 "Future versions of WebView may not support use on other threads."); 9681 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 9682 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 9683 } 9684 } 9685 9686 /** @hide send content invalidate */ 9687 protected void contentInvalidateAll() { 9688 if (mWebViewCore != null && !mBlockWebkitViewMessages) { 9689 mWebViewCore.sendMessage(EventHub.CONTENT_INVALIDATE_ALL); 9690 } 9691 } 9692 9693 /** @hide call pageSwapCallback upon next page swap */ 9694 protected void registerPageSwapCallback() { 9695 nativeRegisterPageSwapCallback(mNativeClass); 9696 } 9697 9698 /** @hide discard all textures from tiles */ 9699 protected void discardAllTextures() { 9700 nativeDiscardAllTextures(); 9701 } 9702 9703 /** 9704 * Begin collecting per-tile profiling data 9705 * 9706 * @hide only used by profiling tests 9707 */ 9708 public void tileProfilingStart() { 9709 nativeTileProfilingStart(); 9710 } 9711 /** 9712 * Return per-tile profiling data 9713 * 9714 * @hide only used by profiling tests 9715 */ 9716 public float tileProfilingStop() { 9717 return nativeTileProfilingStop(); 9718 } 9719 9720 /** @hide only used by profiling tests */ 9721 public void tileProfilingClear() { 9722 nativeTileProfilingClear(); 9723 } 9724 /** @hide only used by profiling tests */ 9725 public int tileProfilingNumFrames() { 9726 return nativeTileProfilingNumFrames(); 9727 } 9728 /** @hide only used by profiling tests */ 9729 public int tileProfilingNumTilesInFrame(int frame) { 9730 return nativeTileProfilingNumTilesInFrame(frame); 9731 } 9732 /** @hide only used by profiling tests */ 9733 public int tileProfilingGetInt(int frame, int tile, String key) { 9734 return nativeTileProfilingGetInt(frame, tile, key); 9735 } 9736 /** @hide only used by profiling tests */ 9737 public float tileProfilingGetFloat(int frame, int tile, String key) { 9738 return nativeTileProfilingGetFloat(frame, tile, key); 9739 } 9740 9741 /** 9742 * Checks the focused content for an editable text field. This can be 9743 * text input or ContentEditable. 9744 * @return true if the focused item is an editable text field. 9745 */ 9746 boolean focusCandidateIsEditableText() { 9747 boolean isEditable = false; 9748 // TODO: reverse sDisableNavcache so that its name is positive 9749 boolean isNavcacheEnabled = !sDisableNavcache; 9750 if (isNavcacheEnabled) { 9751 isEditable = nativeFocusCandidateIsEditableText(mNativeClass); 9752 } else if (mFocusedNode != null) { 9753 isEditable = mFocusedNode.mEditable; 9754 } 9755 return isEditable; 9756 } 9757 9758 private native int nativeCacheHitFramePointer(); 9759 private native boolean nativeCacheHitIsPlugin(); 9760 private native Rect nativeCacheHitNodeBounds(); 9761 private native int nativeCacheHitNodePointer(); 9762 /* package */ native void nativeClearCursor(); 9763 private native void nativeCreate(int ptr, String drawableDir, boolean isHighEndGfx); 9764 private native int nativeCursorFramePointer(); 9765 private native Rect nativeCursorNodeBounds(); 9766 private native int nativeCursorNodePointer(); 9767 private native boolean nativeCursorIntersects(Rect visibleRect); 9768 private native boolean nativeCursorIsAnchor(); 9769 private native boolean nativeCursorIsTextInput(); 9770 private native Point nativeCursorPosition(); 9771 private native String nativeCursorText(); 9772 /** 9773 * Returns true if the native cursor node says it wants to handle key events 9774 * (ala plugins). This can only be called if mNativeClass is non-zero! 9775 */ 9776 private native boolean nativeCursorWantsKeyEvents(); 9777 private native void nativeDebugDump(); 9778 private native void nativeDestroy(); 9779 9780 /** 9781 * Draw the picture set with a background color and extra. If 9782 * "splitIfNeeded" is true and the return value is not 0, the return value 9783 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 9784 * native allocation can be freed. 9785 */ 9786 private native int nativeDraw(Canvas canvas, RectF visibleRect, 9787 int color, int extra, boolean splitIfNeeded); 9788 private native void nativeDumpDisplayTree(String urlOrNull); 9789 private native boolean nativeEvaluateLayersAnimations(int nativeInstance); 9790 private native int nativeGetDrawGLFunction(int nativeInstance, Rect rect, 9791 Rect viewRect, RectF visibleRect, float scale, int extras); 9792 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect, 9793 RectF visibleRect); 9794 private native void nativeExtendSelection(int x, int y); 9795 private native int nativeFindAll(String findLower, String findUpper, 9796 boolean sameAsLastSearch); 9797 private native void nativeFindNext(boolean forward); 9798 /* package */ native int nativeFocusCandidateFramePointer(); 9799 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 9800 /* package */ native boolean nativeFocusCandidateIsPassword(); 9801 private native boolean nativeFocusCandidateIsRtlText(); 9802 private native boolean nativeFocusCandidateIsTextInput(); 9803 private native boolean nativeFocusCandidateIsEditableText(int nativeClass); 9804 /* package */ native int nativeFocusCandidateMaxLength(); 9805 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 9806 /* package */ native boolean nativeFocusCandidateIsSpellcheck(); 9807 /* package */ native String nativeFocusCandidateName(); 9808 private native Rect nativeFocusCandidateNodeBounds(); 9809 /** 9810 * @return A Rect with left, top, right, bottom set to the corresponding 9811 * padding values in the focus candidate, if it is a textfield/textarea with 9812 * a style. Otherwise return null. This is not actually a rectangle; Rect 9813 * is being used to pass four integers. 9814 */ 9815 private native Rect nativeFocusCandidatePaddingRect(); 9816 /* package */ native int nativeFocusCandidatePointer(); 9817 private native String nativeFocusCandidateText(); 9818 /* package */ native float nativeFocusCandidateTextSize(); 9819 /* package */ native int nativeFocusCandidateLineHeight(); 9820 /** 9821 * Returns an integer corresponding to WebView.cpp::type. 9822 * See WebTextView.setType() 9823 */ 9824 private native int nativeFocusCandidateType(); 9825 private native int nativeFocusCandidateLayerId(); 9826 private native boolean nativeFocusIsPlugin(); 9827 private native Rect nativeFocusNodeBounds(); 9828 /* package */ native int nativeFocusNodePointer(); 9829 private native Rect nativeGetCursorRingBounds(); 9830 private native String nativeGetSelection(); 9831 private native boolean nativeHasCursorNode(); 9832 private native boolean nativeHasFocusNode(); 9833 private native void nativeHideCursor(); 9834 private native boolean nativeHitSelection(int x, int y); 9835 private native String nativeImageURI(int x, int y); 9836 private native Rect nativeLayerBounds(int layer); 9837 /* package */ native boolean nativeMoveCursorToNextTextInput(); 9838 // return true if the page has been scrolled 9839 private native boolean nativeMotionUp(int x, int y, int slop); 9840 // returns false if it handled the key 9841 private native boolean nativeMoveCursor(int keyCode, int count, 9842 boolean noScroll); 9843 private native int nativeMoveGeneration(); 9844 private native void nativeMoveSelection(int x, int y); 9845 /** 9846 * @return true if the page should get the shift and arrow keys, rather 9847 * than select text/navigation. 9848 * 9849 * If the focus is a plugin, or if the focus and cursor match and are 9850 * a contentEditable element, then the page should handle these keys. 9851 */ 9852 private native boolean nativePageShouldHandleShiftAndArrows(); 9853 private native boolean nativePointInNavCache(int x, int y, int slop); 9854 // Like many other of our native methods, you must make sure that 9855 // mNativeClass is not null before calling this method. 9856 private native void nativeResetSelection(); 9857 private native Point nativeSelectableText(); 9858 private native void nativeSelectAll(); 9859 private native void nativeSelectBestAt(Rect rect); 9860 private native void nativeSelectAt(int x, int y); 9861 private native int nativeSelectionX(); 9862 private native int nativeSelectionY(); 9863 private native int nativeFindIndex(); 9864 private native void nativeSetExtendSelection(); 9865 private native void nativeSetFindIsEmpty(); 9866 private native void nativeSetFindIsUp(boolean isUp); 9867 private native void nativeSetHeightCanMeasure(boolean measure); 9868 private native void nativeSetBaseLayer(int nativeInstance, 9869 int layer, Region invalRegion, 9870 boolean showVisualIndicator, boolean isPictureAfterFirstLayout, 9871 boolean registerPageSwapCallback); 9872 private native int nativeGetBaseLayer(); 9873 private native void nativeShowCursorTimed(); 9874 private native void nativeReplaceBaseContent(int content); 9875 private native void nativeCopyBaseContentToPicture(Picture pict); 9876 private native boolean nativeHasContent(); 9877 private native void nativeSetSelectionPointer(int nativeInstance, 9878 boolean set, float scale, int x, int y); 9879 private native boolean nativeStartSelection(int x, int y); 9880 private native void nativeStopGL(); 9881 private native Rect nativeSubtractLayers(Rect content); 9882 private native int nativeTextGeneration(); 9883 private native void nativeRegisterPageSwapCallback(int nativeInstance); 9884 private native void nativeDiscardAllTextures(); 9885 private native void nativeTileProfilingStart(); 9886 private native float nativeTileProfilingStop(); 9887 private native void nativeTileProfilingClear(); 9888 private native int nativeTileProfilingNumFrames(); 9889 private native int nativeTileProfilingNumTilesInFrame(int frame); 9890 private native int nativeTileProfilingGetInt(int frame, int tile, String key); 9891 private native float nativeTileProfilingGetFloat(int frame, int tile, String key); 9892 // Never call this version except by updateCachedTextfield(String) - 9893 // we always want to pass in our generation number. 9894 private native void nativeUpdateCachedTextfield(String updatedText, 9895 int generation); 9896 private native boolean nativeWordSelection(int x, int y); 9897 // return NO_LEFTEDGE means failure. 9898 static final int NO_LEFTEDGE = -1; 9899 native int nativeGetBlockLeftEdge(int x, int y, float scale); 9900 9901 private native void nativeUseHardwareAccelSkia(boolean enabled); 9902 9903 // Returns a pointer to the scrollable LayerAndroid at the given point. 9904 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 9905 Rect scrollBounds); 9906 /** 9907 * Scroll the specified layer. 9908 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 9909 * @param newX Destination x position to which to scroll. 9910 * @param newY Destination y position to which to scroll. 9911 * @return True if the layer is successfully scrolled. 9912 */ 9913 private native boolean nativeScrollLayer(int layer, int newX, int newY); 9914 private native void nativeSetIsScrolling(boolean isScrolling); 9915 private native int nativeGetBackgroundColor(); 9916 native boolean nativeSetProperty(String key, String value); 9917 native String nativeGetProperty(String key); 9918 private native void nativeGetTextSelectionRegion(int instance, Region region); 9919 private native void nativeGetSelectionHandles(int instance, int[] handles); 9920 /** 9921 * See {@link ComponentCallbacks2} for the trim levels and descriptions 9922 */ 9923 private static native void nativeOnTrimMemory(int level); 9924 private static native void nativeSetPauseDrawing(int instance, boolean pause); 9925 private static native boolean nativeDisableNavcache(); 9926} 9927