WebView.java revision 1854ddb6d930b95ceeb6448482e2c76a45935018
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageInfo; 29import android.content.pm.PackageManager; 30import android.content.res.AssetManager; 31import android.content.res.Configuration; 32import android.database.DataSetObserver; 33import android.graphics.Bitmap; 34import android.graphics.BitmapFactory; 35import android.graphics.BitmapShader; 36import android.graphics.Canvas; 37import android.graphics.Color; 38import android.graphics.CornerPathEffect; 39import android.graphics.DrawFilter; 40import android.graphics.Paint; 41import android.graphics.PaintFlagsDrawFilter; 42import android.graphics.Picture; 43import android.graphics.Point; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region; 47import android.graphics.SurfaceTexture; 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.Message; 58import android.provider.Settings; 59import android.speech.tts.TextToSpeech; 60import android.text.Selection; 61import android.text.Spannable; 62import android.util.AttributeSet; 63import android.util.EventLog; 64import android.util.Log; 65import android.view.Gravity; 66import android.view.HardwareCanvas; 67import android.view.InputDevice; 68import android.view.KeyCharacterMap; 69import android.view.KeyEvent; 70import android.view.LayoutInflater; 71import android.view.MotionEvent; 72import android.view.ScaleGestureDetector; 73import android.view.SoundEffectConstants; 74import android.view.VelocityTracker; 75import android.view.View; 76import android.view.ViewConfiguration; 77import android.view.ViewGroup; 78import android.view.ViewParent; 79import android.view.ViewTreeObserver; 80import android.view.accessibility.AccessibilityManager; 81import android.view.inputmethod.EditorInfo; 82import android.view.inputmethod.InputConnection; 83import android.view.inputmethod.InputMethodManager; 84import android.webkit.WebTextView.AutoCompleteAdapter; 85import android.webkit.WebViewCore.EventHub; 86import android.webkit.WebViewCore.TouchEventData; 87import android.webkit.WebViewCore.TouchHighlightData; 88import android.widget.AbsoluteLayout; 89import android.widget.Adapter; 90import android.widget.AdapterView; 91import android.widget.AdapterView.OnItemClickListener; 92import android.widget.ArrayAdapter; 93import android.widget.CheckedTextView; 94import android.widget.LinearLayout; 95import android.widget.ListView; 96import android.widget.OverScroller; 97import android.widget.Toast; 98 99import java.io.File; 100import java.io.FileInputStream; 101import java.io.FileNotFoundException; 102import java.io.FileOutputStream; 103import java.net.URLDecoder; 104import java.util.ArrayList; 105import java.util.HashMap; 106import java.util.HashSet; 107import java.util.List; 108import java.util.Map; 109import java.util.Set; 110import java.util.Vector; 111import java.util.regex.Matcher; 112import java.util.regex.Pattern; 113 114import junit.framework.Assert; 115 116/** 117 * <p>A View that displays web pages. This class is the basis upon which you 118 * can roll your own web browser or simply display some online content within your Activity. 119 * It uses the WebKit rendering engine to display 120 * web pages and includes methods to navigate forward and backward 121 * through a history, zoom in and out, perform text searches and more.</p> 122 * <p>To enable the built-in zoom, set 123 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 124 * (introduced in API version 3). 125 * <p>Note that, in order for your Activity to access the Internet and load web pages 126 * in a WebView, you must add the {@code INTERNET} permissions to your 127 * Android Manifest file:</p> 128 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 129 * 130 * <p>This must be a child of the <a 131 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 132 * element.</p> 133 * 134 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 135 * tutorial</a>.</p> 136 * 137 * <h3>Basic usage</h3> 138 * 139 * <p>By default, a WebView provides no browser-like widgets, does not 140 * enable JavaScript and web page errors are ignored. If your goal is only 141 * to display some HTML as a part of your UI, this is probably fine; 142 * the user won't need to interact with the web page beyond reading 143 * it, and the web page won't need to interact with the user. If you 144 * actually want a full-blown web browser, then you probably want to 145 * invoke the Browser application with a URL Intent rather than show it 146 * with a WebView. For example: 147 * <pre> 148 * Uri uri = Uri.parse("http://www.example.com"); 149 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 150 * startActivity(intent); 151 * </pre> 152 * <p>See {@link android.content.Intent} for more information.</p> 153 * 154 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 155 * or set the entire Activity window as a WebView during {@link 156 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 157 * <pre class="prettyprint"> 158 * WebView webview = new WebView(this); 159 * setContentView(webview); 160 * </pre> 161 * 162 * <p>Then load the desired web page:</p> 163 * <pre> 164 * // Simplest usage: note that an exception will NOT be thrown 165 * // if there is an error loading this page (see below). 166 * webview.loadUrl("http://slashdot.org/"); 167 * 168 * // OR, you can also load from an HTML string: 169 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 170 * webview.loadData(summary, "text/html", "utf-8"); 171 * // ... although note that there are restrictions on what this HTML can do. 172 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 173 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 174 * </pre> 175 * 176 * <p>A WebView has several customization points where you can add your 177 * own behavior. These are:</p> 178 * 179 * <ul> 180 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 181 * This class is called when something that might impact a 182 * browser UI happens, for instance, progress updates and 183 * JavaScript alerts are sent here (see <a 184 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 185 * </li> 186 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 187 * It will be called when things happen that impact the 188 * rendering of the content, eg, errors or form submissions. You 189 * can also intercept URL loading here (via {@link 190 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 191 * shouldOverrideUrlLoading()}).</li> 192 * <li>Modifying the {@link android.webkit.WebSettings}, such as 193 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 194 * setJavaScriptEnabled()}. </li> 195 * <li>Adding JavaScript-to-Java interfaces with the {@link 196 * android.webkit.WebView#addJavascriptInterface} method. 197 * This lets you bind Java objects into the WebView so they can be 198 * controlled from the web pages JavaScript.</li> 199 * </ul> 200 * 201 * <p>Here's a more complicated example, showing error handling, 202 * settings, and progress notification:</p> 203 * 204 * <pre class="prettyprint"> 205 * // Let's display the progress in the activity title bar, like the 206 * // browser app does. 207 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 208 * 209 * webview.getSettings().setJavaScriptEnabled(true); 210 * 211 * final Activity activity = this; 212 * webview.setWebChromeClient(new WebChromeClient() { 213 * public void onProgressChanged(WebView view, int progress) { 214 * // Activities and WebViews measure progress with different scales. 215 * // The progress meter will automatically disappear when we reach 100% 216 * activity.setProgress(progress * 1000); 217 * } 218 * }); 219 * webview.setWebViewClient(new WebViewClient() { 220 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 221 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 222 * } 223 * }); 224 * 225 * webview.loadUrl("http://slashdot.org/"); 226 * </pre> 227 * 228 * <h3>Cookie and window management</h3> 229 * 230 * <p>For obvious security reasons, your application has its own 231 * cache, cookie store etc.—it does not share the Browser 232 * application's data. Cookies are managed on a separate thread, so 233 * operations like index building don't block the UI 234 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 235 * if you want to use cookies in your application. 236 * </p> 237 * 238 * <p>By default, requests by the HTML to open new windows are 239 * ignored. This is true whether they be opened by JavaScript or by 240 * the target attribute on a link. You can customize your 241 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 242 * and render them in whatever manner you want.</p> 243 * 244 * <p>The standard behavior for an Activity is to be destroyed and 245 * recreated when the device orientation or any other configuration changes. This will cause 246 * the WebView to reload the current page. If you don't want that, you 247 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 248 * changes, and then just leave the WebView alone. It'll automatically 249 * re-orient itself as appropriate. Read <a 250 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 251 * more information about how to handle configuration changes during runtime.</p> 252 * 253 * 254 * <h3>Building web pages to support different screen densities</h3> 255 * 256 * <p>The screen density of a device is based on the screen resolution. A screen with low density 257 * has fewer available pixels per inch, where a screen with high density 258 * has more — sometimes significantly more — pixels per inch. The density of a 259 * screen is important because, other things being equal, a UI element (such as a button) whose 260 * height and width are defined in terms of screen pixels will appear larger on the lower density 261 * screen and smaller on the higher density screen. 262 * For simplicity, Android collapses all actual screen densities into three generalized densities: 263 * high, medium, and low.</p> 264 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 265 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 266 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 267 * are bigger). 268 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 269 * you (as a web developer) target screens with different screen densities.</p> 270 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 271 * <ul> 272 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 273 * default scaling factor used for the current device. For example, if the value of {@code 274 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 275 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 276 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 277 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 278 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 279 * (discussed below), then you can stop this default scaling behavior.</li> 280 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 281 * densities for which this style sheet is to be used. The corresponding value should be either 282 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 283 * density, or high density screens, respectively. For example: 284 * <pre> 285 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 286 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 287 * which is the high density pixel ratio.</p> 288 * </li> 289 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 290 * this to specify the target density for which the web page is designed, using the following 291 * values: 292 * <ul> 293 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 294 * occurs.</li> 295 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 296 * as appropriate.</li> 297 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 298 * low density screens scale down. This is also the default behavior.</li> 299 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 300 * as appropriate.</li> 301 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 302 * values are 70-400).</li> 303 * </ul> 304 * <p>Here's an example meta tag to specify the target density:</p> 305 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 306 * </ul> 307 * <p>If you want to modify your web page for different densities, by using the {@code 308 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 309 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 310 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 311 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 312 * 313 * 314 */ 315@Widget 316public class WebView extends AbsoluteLayout 317 implements ViewTreeObserver.OnGlobalFocusChangeListener, 318 ViewGroup.OnHierarchyChangeListener { 319 320 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 321 public void onGlobalLayout() { 322 if (isShown()) { 323 setGLRectViewport(); 324 } 325 } 326 } 327 328 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 329 public void onScrollChanged() { 330 if (isShown()) { 331 setGLRectViewport(); 332 } 333 } 334 } 335 336 // The listener to capture global layout change event. 337 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 338 339 // The listener to capture scroll event. 340 private InnerScrollChangedListener mScrollChangedListener = null; 341 342 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 343 // the screen all-the-time. Good for profiling our drawing code 344 static private final boolean AUTO_REDRAW_HACK = false; 345 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 346 private boolean mAutoRedraw; 347 348 // Reference to the AlertDialog displayed by InvokeListBox. 349 // It's used to dismiss the dialog in destroy if not done before. 350 private AlertDialog mListBoxDialog = null; 351 352 static final String LOGTAG = "webview"; 353 354 private ZoomManager mZoomManager; 355 356 private final Rect mGLRectViewport = new Rect(); 357 private final Rect mViewRectViewport = new Rect(); 358 private boolean mGLViewportEmpty = false; 359 360 /** 361 * Transportation object for returning WebView across thread boundaries. 362 */ 363 public class WebViewTransport { 364 private WebView mWebview; 365 366 /** 367 * Set the WebView to the transportation object. 368 * @param webview The WebView to transport. 369 */ 370 public synchronized void setWebView(WebView webview) { 371 mWebview = webview; 372 } 373 374 /** 375 * Return the WebView object. 376 * @return WebView The transported WebView object. 377 */ 378 public synchronized WebView getWebView() { 379 return mWebview; 380 } 381 } 382 383 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 384 private final CallbackProxy mCallbackProxy; 385 386 private final WebViewDatabase mDatabase; 387 388 // SSL certificate for the main top-level page (if secure) 389 private SslCertificate mCertificate; 390 391 // Native WebView pointer that is 0 until the native object has been 392 // created. 393 private int mNativeClass; 394 // This would be final but it needs to be set to null when the WebView is 395 // destroyed. 396 private WebViewCore mWebViewCore; 397 // Handler for dispatching UI messages. 398 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 399 private WebTextView mWebTextView; 400 // Used to ignore changes to webkit text that arrives to the UI side after 401 // more key events. 402 private int mTextGeneration; 403 404 /* package */ void incrementTextGeneration() { mTextGeneration++; } 405 406 // Used by WebViewCore to create child views. 407 /* package */ final ViewManager mViewManager; 408 409 // Used to display in full screen mode 410 PluginFullScreenHolder mFullScreenHolder; 411 412 /** 413 * Position of the last touch event in pixels. 414 * Use integer to prevent loss of dragging delta calculation accuracy; 415 * which was done in float and converted to integer, and resulted in gradual 416 * and compounding touch position and view dragging mismatch. 417 */ 418 private int mLastTouchX; 419 private int mLastTouchY; 420 421 /** 422 * Time of the last touch event. 423 */ 424 private long mLastTouchTime; 425 426 /** 427 * Time of the last time sending touch event to WebViewCore 428 */ 429 private long mLastSentTouchTime; 430 431 /** 432 * The minimum elapsed time before sending another ACTION_MOVE event to 433 * WebViewCore. This really should be tuned for each type of the devices. 434 * For example in Google Map api test case, it takes Dream device at least 435 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 436 * triggering the layout and drawing the picture. While the same process 437 * takes 60+ms on the current high speed device. If we make 438 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 439 * to WebViewCore queue and the real layout and draw events will be pushed 440 * to further, which slows down the refresh rate. Choose 50 to favor the 441 * current high speed devices. For Dream like devices, 100 is a better 442 * choice. Maybe make this in the buildspec later. 443 * (Update 12/14/2010: changed to 0 since current device should be able to 444 * handle the raw events and Map team voted to have the raw events too. 445 */ 446 private static final int TOUCH_SENT_INTERVAL = 0; 447 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 448 449 /** 450 * Helper class to get velocity for fling 451 */ 452 VelocityTracker mVelocityTracker; 453 private int mMaximumFling; 454 private float mLastVelocity; 455 private float mLastVelX; 456 private float mLastVelY; 457 458 // The id of the native layer being scrolled. 459 private int mScrollingLayer; 460 private Rect mScrollingLayerRect = new Rect(); 461 462 // only trigger accelerated fling if the new velocity is at least 463 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 464 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 465 466 /** 467 * Touch mode 468 */ 469 private int mTouchMode = TOUCH_DONE_MODE; 470 private static final int TOUCH_INIT_MODE = 1; 471 private static final int TOUCH_DRAG_START_MODE = 2; 472 private static final int TOUCH_DRAG_MODE = 3; 473 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 474 private static final int TOUCH_SHORTPRESS_MODE = 5; 475 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 476 private static final int TOUCH_DONE_MODE = 7; 477 private static final int TOUCH_PINCH_DRAG = 8; 478 private static final int TOUCH_DRAG_LAYER_MODE = 9; 479 480 // Whether to forward the touch events to WebCore 481 // Can only be set by WebKit via JNI. 482 private boolean mForwardTouchEvents = false; 483 484 // Whether to prevent default during touch. The initial value depends on 485 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 486 // for touch down. Otherwise UI will wait for the answer of the first 487 // confirmed move before taking over the control. 488 private static final int PREVENT_DEFAULT_NO = 0; 489 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 490 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 491 private static final int PREVENT_DEFAULT_YES = 3; 492 private static final int PREVENT_DEFAULT_IGNORE = 4; 493 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 494 495 // true when the touch movement exceeds the slop 496 private boolean mConfirmMove; 497 498 // if true, touch events will be first processed by WebCore, if prevent 499 // default is not set, the UI will continue handle them. 500 private boolean mDeferTouchProcess; 501 502 // to avoid interfering with the current touch events, track them 503 // separately. Currently no snapping or fling in the deferred process mode 504 private int mDeferTouchMode = TOUCH_DONE_MODE; 505 private float mLastDeferTouchX; 506 private float mLastDeferTouchY; 507 508 // To keep track of whether the current drag was initiated by a WebTextView, 509 // so that we know not to hide the cursor 510 boolean mDragFromTextInput; 511 512 // Whether or not to draw the cursor ring. 513 private boolean mDrawCursorRing = true; 514 515 // true if onPause has been called (and not onResume) 516 private boolean mIsPaused; 517 518 private HitTestResult mInitialHitTestResult; 519 520 /** 521 * Customizable constant 522 */ 523 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 524 private int mTouchSlopSquare; 525 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 526 private int mDoubleTapSlopSquare; 527 // pre-computed density adjusted navigation slop 528 private int mNavSlop; 529 // This should be ViewConfiguration.getTapTimeout() 530 // But system time out is 100ms, which is too short for the browser. 531 // In the browser, if it switches out of tap too soon, jump tap won't work. 532 private static final int TAP_TIMEOUT = 200; 533 // This should be ViewConfiguration.getLongPressTimeout() 534 // But system time out is 500ms, which is too short for the browser. 535 // With a short timeout, it's difficult to treat trigger a short press. 536 private static final int LONG_PRESS_TIMEOUT = 1000; 537 // needed to avoid flinging after a pause of no movement 538 private static final int MIN_FLING_TIME = 250; 539 // draw unfiltered after drag is held without movement 540 private static final int MOTIONLESS_TIME = 100; 541 // The amount of content to overlap between two screens when going through 542 // pages with the space bar, in pixels. 543 private static final int PAGE_SCROLL_OVERLAP = 24; 544 545 /** 546 * These prevent calling requestLayout if either dimension is fixed. This 547 * depends on the layout parameters and the measure specs. 548 */ 549 boolean mWidthCanMeasure; 550 boolean mHeightCanMeasure; 551 552 // Remember the last dimensions we sent to the native side so we can avoid 553 // sending the same dimensions more than once. 554 int mLastWidthSent; 555 int mLastHeightSent; 556 // Since view height sent to webkit could be fixed to avoid relayout, this 557 // value records the last sent actual view height. 558 int mLastActualHeightSent; 559 560 private int mContentWidth; // cache of value from WebViewCore 561 private int mContentHeight; // cache of value from WebViewCore 562 563 // Need to have the separate control for horizontal and vertical scrollbar 564 // style than the View's single scrollbar style 565 private boolean mOverlayHorizontalScrollbar = true; 566 private boolean mOverlayVerticalScrollbar = false; 567 568 // our standard speed. this way small distances will be traversed in less 569 // time than large distances, but we cap the duration, so that very large 570 // distances won't take too long to get there. 571 private static final int STD_SPEED = 480; // pixels per second 572 // time for the longest scroll animation 573 private static final int MAX_DURATION = 750; // milliseconds 574 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 575 576 // Used by OverScrollGlow 577 OverScroller mScroller; 578 579 private boolean mInOverScrollMode = false; 580 private static Paint mOverScrollBackground; 581 private static Paint mOverScrollBorder; 582 583 private boolean mWrapContent; 584 private static final int MOTIONLESS_FALSE = 0; 585 private static final int MOTIONLESS_PENDING = 1; 586 private static final int MOTIONLESS_TRUE = 2; 587 private static final int MOTIONLESS_IGNORE = 3; 588 private int mHeldMotionless; 589 590 // An instance for injecting accessibility in WebViews with disabled 591 // JavaScript or ones for which no accessibility script exists 592 private AccessibilityInjector mAccessibilityInjector; 593 594 // flag indicating if accessibility script is injected so we 595 // know to handle Shift and arrows natively first 596 private boolean mAccessibilityScriptInjected; 597 598 // the color used to highlight the touch rectangles 599 private static final int mHightlightColor = 0x33000000; 600 // the round corner for the highlight path 601 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 602 // the region indicating where the user touched on the screen 603 private Region mTouchHighlightRegion = new Region(); 604 // the paint for the touch highlight 605 private Paint mTouchHightlightPaint; 606 // debug only 607 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 608 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 609 private Paint mTouchCrossHairColor; 610 private int mTouchHighlightX; 611 private int mTouchHighlightY; 612 613 // Basically this proxy is used to tell the Video to update layer tree at 614 // SetBaseLayer time and to pause when WebView paused. 615 private HTML5VideoViewProxy mHTML5VideoViewProxy; 616 617 /* 618 * Private message ids 619 */ 620 private static final int REMEMBER_PASSWORD = 1; 621 private static final int NEVER_REMEMBER_PASSWORD = 2; 622 private static final int SWITCH_TO_SHORTPRESS = 3; 623 private static final int SWITCH_TO_LONGPRESS = 4; 624 private static final int RELEASE_SINGLE_TAP = 5; 625 private static final int REQUEST_FORM_DATA = 6; 626 private static final int RESUME_WEBCORE_PRIORITY = 7; 627 private static final int DRAG_HELD_MOTIONLESS = 8; 628 private static final int AWAKEN_SCROLL_BARS = 9; 629 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 630 private static final int SCROLL_SELECT_TEXT = 11; 631 632 633 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 634 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 635 636 /* 637 * Package message ids 638 */ 639 static final int SCROLL_TO_MSG_ID = 101; 640 static final int NEW_PICTURE_MSG_ID = 105; 641 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 642 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 643 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 644 static final int UPDATE_ZOOM_RANGE = 109; 645 static final int UNHANDLED_NAV_KEY = 110; 646 static final int CLEAR_TEXT_ENTRY = 111; 647 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 648 static final int SHOW_RECT_MSG_ID = 113; 649 static final int LONG_PRESS_CENTER = 114; 650 static final int PREVENT_TOUCH_ID = 115; 651 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 652 // obj=Rect in doc coordinates 653 static final int INVAL_RECT_MSG_ID = 117; 654 static final int REQUEST_KEYBOARD = 118; 655 static final int DO_MOTION_UP = 119; 656 static final int SHOW_FULLSCREEN = 120; 657 static final int HIDE_FULLSCREEN = 121; 658 static final int DOM_FOCUS_CHANGED = 122; 659 static final int REPLACE_BASE_CONTENT = 123; 660 static final int FORM_DID_BLUR = 124; 661 static final int RETURN_LABEL = 125; 662 static final int FIND_AGAIN = 126; 663 static final int CENTER_FIT_RECT = 127; 664 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 665 static final int SET_SCROLLBAR_MODES = 129; 666 static final int SELECTION_STRING_CHANGED = 130; 667 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 668 static final int SAVE_WEBARCHIVE_FINISHED = 132; 669 670 static final int SET_AUTOFILLABLE = 133; 671 static final int AUTOFILL_COMPLETE = 134; 672 673 static final int SELECT_AT = 135; 674 static final int SCREEN_ON = 136; 675 static final int ENTER_FULLSCREEN_VIDEO = 137; 676 677 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 678 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 679 680 static final String[] HandlerPrivateDebugString = { 681 "REMEMBER_PASSWORD", // = 1; 682 "NEVER_REMEMBER_PASSWORD", // = 2; 683 "SWITCH_TO_SHORTPRESS", // = 3; 684 "SWITCH_TO_LONGPRESS", // = 4; 685 "RELEASE_SINGLE_TAP", // = 5; 686 "REQUEST_FORM_DATA", // = 6; 687 "RESUME_WEBCORE_PRIORITY", // = 7; 688 "DRAG_HELD_MOTIONLESS", // = 8; 689 "AWAKEN_SCROLL_BARS", // = 9; 690 "PREVENT_DEFAULT_TIMEOUT", // = 10; 691 "SCROLL_SELECT_TEXT" // = 11; 692 }; 693 694 static final String[] HandlerPackageDebugString = { 695 "SCROLL_TO_MSG_ID", // = 101; 696 "102", // = 102; 697 "103", // = 103; 698 "104", // = 104; 699 "NEW_PICTURE_MSG_ID", // = 105; 700 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 701 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 702 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 703 "UPDATE_ZOOM_RANGE", // = 109; 704 "UNHANDLED_NAV_KEY", // = 110; 705 "CLEAR_TEXT_ENTRY", // = 111; 706 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 707 "SHOW_RECT_MSG_ID", // = 113; 708 "LONG_PRESS_CENTER", // = 114; 709 "PREVENT_TOUCH_ID", // = 115; 710 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 711 "INVAL_RECT_MSG_ID", // = 117; 712 "REQUEST_KEYBOARD", // = 118; 713 "DO_MOTION_UP", // = 119; 714 "SHOW_FULLSCREEN", // = 120; 715 "HIDE_FULLSCREEN", // = 121; 716 "DOM_FOCUS_CHANGED", // = 122; 717 "REPLACE_BASE_CONTENT", // = 123; 718 "FORM_DID_BLUR", // = 124; 719 "RETURN_LABEL", // = 125; 720 "FIND_AGAIN", // = 126; 721 "CENTER_FIT_RECT", // = 127; 722 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 723 "SET_SCROLLBAR_MODES", // = 129; 724 "SELECTION_STRING_CHANGED", // = 130; 725 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 726 "SAVE_WEBARCHIVE_FINISHED", // = 132; 727 "SET_AUTOFILLABLE", // = 133; 728 "AUTOFILL_COMPLETE", // = 134; 729 "SELECT_AT", // = 135; 730 "SCREEN_ON", // = 136; 731 "ENTER_FULLSCREEN_VIDEO" // = 137; 732 }; 733 734 // If the site doesn't use the viewport meta tag to specify the viewport, 735 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 736 static final int DEFAULT_VIEWPORT_WIDTH = 980; 737 738 // normally we try to fit the content to the minimum preferred width 739 // calculated by the Webkit. To avoid the bad behavior when some site's 740 // minimum preferred width keeps growing when changing the viewport width or 741 // the minimum preferred width is huge, an upper limit is needed. 742 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 743 744 // initial scale in percent. 0 means using default. 745 private int mInitialScaleInPercent = 0; 746 747 // Whether or not a scroll event should be sent to webkit. This is only set 748 // to false when restoring the scroll position. 749 private boolean mSendScrollEvent = true; 750 751 private int mSnapScrollMode = SNAP_NONE; 752 private static final int SNAP_NONE = 0; 753 private static final int SNAP_LOCK = 1; // not a separate state 754 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 755 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 756 private boolean mSnapPositive; 757 758 // keep these in sync with their counterparts in WebView.cpp 759 private static final int DRAW_EXTRAS_NONE = 0; 760 private static final int DRAW_EXTRAS_FIND = 1; 761 private static final int DRAW_EXTRAS_SELECTION = 2; 762 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 763 764 // keep this in sync with WebCore:ScrollbarMode in WebKit 765 private static final int SCROLLBAR_AUTO = 0; 766 private static final int SCROLLBAR_ALWAYSOFF = 1; 767 // as we auto fade scrollbar, this is ignored. 768 private static final int SCROLLBAR_ALWAYSON = 2; 769 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 770 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 771 772 // constants for determining script injection strategy 773 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 774 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 775 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 776 777 // the alias via which accessibility JavaScript interface is exposed 778 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 779 780 // JavaScript to inject the script chooser which will 781 // pick the right script for the current URL 782 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 783 "javascript:(function() {" + 784 " var chooser = document.createElement('script');" + 785 " chooser.type = 'text/javascript';" + 786 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 787 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 788 " })();"; 789 790 // Regular expression that matches the "axs" URL parameter. 791 // The value of 0 means the accessibility script is opted out 792 // The value of 1 means the accessibility script is already injected 793 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 794 795 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 796 private TextToSpeech mTextToSpeech; 797 798 // variable to cache the above pattern in case accessibility is enabled. 799 private Pattern mMatchAxsUrlParameterPattern; 800 801 /** 802 * Max distance to overscroll by in pixels. 803 * This how far content can be pulled beyond its normal bounds by the user. 804 */ 805 private int mOverscrollDistance; 806 807 /** 808 * Max distance to overfling by in pixels. 809 * This is how far flinged content can move beyond the end of its normal bounds. 810 */ 811 private int mOverflingDistance; 812 813 private OverScrollGlow mOverScrollGlow; 814 815 // Used to match key downs and key ups 816 private Vector<Integer> mKeysPressed; 817 818 /* package */ static boolean mLogEvent = true; 819 820 // for event log 821 private long mLastTouchUpTime = 0; 822 823 private WebViewCore.AutoFillData mAutoFillData; 824 825 /** 826 * URI scheme for telephone number 827 */ 828 public static final String SCHEME_TEL = "tel:"; 829 /** 830 * URI scheme for email address 831 */ 832 public static final String SCHEME_MAILTO = "mailto:"; 833 /** 834 * URI scheme for map address 835 */ 836 public static final String SCHEME_GEO = "geo:0,0?q="; 837 838 private int mBackgroundColor = Color.WHITE; 839 840 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 841 private int mAutoScrollX = 0; 842 private int mAutoScrollY = 0; 843 private int mMinAutoScrollX = 0; 844 private int mMaxAutoScrollX = 0; 845 private int mMinAutoScrollY = 0; 846 private int mMaxAutoScrollY = 0; 847 private Rect mScrollingLayerBounds = new Rect(); 848 private boolean mSentAutoScrollMessage = false; 849 850 // used for serializing asynchronously handled touch events. 851 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 852 853 // Used to notify listeners of a new picture. 854 private PictureListener mPictureListener; 855 /** 856 * Interface to listen for new pictures as they change. 857 */ 858 public interface PictureListener { 859 /** 860 * Notify the listener that the picture has changed. 861 * @param view The WebView that owns the picture. 862 * @param picture The new picture. 863 */ 864 public void onNewPicture(WebView view, Picture picture); 865 } 866 867 // FIXME: Want to make this public, but need to change the API file. 868 public /*static*/ class HitTestResult { 869 /** 870 * Default HitTestResult, where the target is unknown 871 */ 872 public static final int UNKNOWN_TYPE = 0; 873 /** 874 * @deprecated This type is no longer used. 875 */ 876 @Deprecated 877 public static final int ANCHOR_TYPE = 1; 878 /** 879 * HitTestResult for hitting a phone number 880 */ 881 public static final int PHONE_TYPE = 2; 882 /** 883 * HitTestResult for hitting a map address 884 */ 885 public static final int GEO_TYPE = 3; 886 /** 887 * HitTestResult for hitting an email address 888 */ 889 public static final int EMAIL_TYPE = 4; 890 /** 891 * HitTestResult for hitting an HTML::img tag 892 */ 893 public static final int IMAGE_TYPE = 5; 894 /** 895 * @deprecated This type is no longer used. 896 */ 897 @Deprecated 898 public static final int IMAGE_ANCHOR_TYPE = 6; 899 /** 900 * HitTestResult for hitting a HTML::a tag with src=http 901 */ 902 public static final int SRC_ANCHOR_TYPE = 7; 903 /** 904 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 905 */ 906 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 907 /** 908 * HitTestResult for hitting an edit text area 909 */ 910 public static final int EDIT_TEXT_TYPE = 9; 911 912 private int mType; 913 private String mExtra; 914 915 HitTestResult() { 916 mType = UNKNOWN_TYPE; 917 } 918 919 private void setType(int type) { 920 mType = type; 921 } 922 923 private void setExtra(String extra) { 924 mExtra = extra; 925 } 926 927 public int getType() { 928 return mType; 929 } 930 931 public String getExtra() { 932 return mExtra; 933 } 934 } 935 936 /** 937 * Construct a new WebView with a Context object. 938 * @param context A Context object used to access application assets. 939 */ 940 public WebView(Context context) { 941 this(context, null); 942 } 943 944 /** 945 * Construct a new WebView with layout parameters. 946 * @param context A Context object used to access application assets. 947 * @param attrs An AttributeSet passed to our parent. 948 */ 949 public WebView(Context context, AttributeSet attrs) { 950 this(context, attrs, com.android.internal.R.attr.webViewStyle); 951 } 952 953 /** 954 * Construct a new WebView with layout parameters and a default style. 955 * @param context A Context object used to access application assets. 956 * @param attrs An AttributeSet passed to our parent. 957 * @param defStyle The default style resource ID. 958 */ 959 public WebView(Context context, AttributeSet attrs, int defStyle) { 960 this(context, attrs, defStyle, false); 961 } 962 963 /** 964 * Construct a new WebView with layout parameters and a default style. 965 * @param context A Context object used to access application assets. 966 * @param attrs An AttributeSet passed to our parent. 967 * @param defStyle The default style resource ID. 968 */ 969 public WebView(Context context, AttributeSet attrs, int defStyle, 970 boolean privateBrowsing) { 971 this(context, attrs, defStyle, null, privateBrowsing); 972 } 973 974 /** 975 * Construct a new WebView with layout parameters, a default style and a set 976 * of custom Javscript interfaces to be added to the WebView at initialization 977 * time. This guarantees that these interfaces will be available when the JS 978 * context is initialized. 979 * @param context A Context object used to access application assets. 980 * @param attrs An AttributeSet passed to our parent. 981 * @param defStyle The default style resource ID. 982 * @param javaScriptInterfaces is a Map of interface names, as keys, and 983 * object implementing those interfaces, as values. 984 * @hide pending API council approval. 985 */ 986 protected WebView(Context context, AttributeSet attrs, int defStyle, 987 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 988 super(context, attrs, defStyle); 989 990 // Used by the chrome stack to find application paths 991 JniUtil.setContext(context); 992 993 mCallbackProxy = new CallbackProxy(context, this); 994 mViewManager = new ViewManager(this); 995 L10nUtils.setApplicationContext(context.getApplicationContext()); 996 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 997 mDatabase = WebViewDatabase.getInstance(context); 998 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 999 mZoomManager = new ZoomManager(this, mCallbackProxy); 1000 1001 /* The init method must follow the creation of certain member variables, 1002 * such as the mZoomManager. 1003 */ 1004 init(); 1005 setupPackageListener(context); 1006 setupProxyListener(context); 1007 updateMultiTouchSupport(context); 1008 1009 if (privateBrowsing) { 1010 startPrivateBrowsing(); 1011 } 1012 1013 mAutoFillData = new WebViewCore.AutoFillData(); 1014 } 1015 1016 private static class ProxyReceiver extends BroadcastReceiver { 1017 @Override 1018 public void onReceive(Context context, Intent intent) { 1019 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1020 handleProxyBroadcast(intent); 1021 } 1022 } 1023 } 1024 1025 /* 1026 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1027 */ 1028 private static boolean sProxyReceiverAdded; 1029 1030 private static synchronized void setupProxyListener(Context context) { 1031 if (sProxyReceiverAdded) { 1032 return; 1033 } 1034 IntentFilter filter = new IntentFilter(); 1035 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1036 Intent currentProxy = context.getApplicationContext().registerReceiver( 1037 new ProxyReceiver(), filter); 1038 sProxyReceiverAdded = true; 1039 if (currentProxy != null) { 1040 handleProxyBroadcast(currentProxy); 1041 } 1042 } 1043 1044 private static void handleProxyBroadcast(Intent intent) { 1045 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1046 if (proxyProperties == null || proxyProperties.getHost() == null) { 1047 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1048 return; 1049 } 1050 1051 String host = proxyProperties.getHost(); 1052 int port = proxyProperties.getPort(); 1053 if (port != 0) 1054 host += ":" + port; 1055 1056 // TODO: Handle exclusion list 1057 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1058 // there 1059 String exclusionList = proxyProperties.getExclusionList(); 1060 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1061 } 1062 1063 /* 1064 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1065 * or ACTION_PACKAGE_REMOVED. 1066 */ 1067 private static boolean sPackageInstallationReceiverAdded = false; 1068 1069 /* 1070 * A set of Google packages we monitor for the 1071 * navigator.isApplicationInstalled() API. Add additional packages as 1072 * needed. 1073 */ 1074 private static Set<String> sGoogleApps; 1075 static { 1076 sGoogleApps = new HashSet<String>(); 1077 sGoogleApps.add("com.google.android.youtube"); 1078 } 1079 1080 private static class PackageListener extends BroadcastReceiver { 1081 @Override 1082 public void onReceive(Context context, Intent intent) { 1083 final String action = intent.getAction(); 1084 final String packageName = intent.getData().getSchemeSpecificPart(); 1085 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1086 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1087 // if it is replacing, refreshPlugins() when adding 1088 return; 1089 } 1090 1091 if (sGoogleApps.contains(packageName)) { 1092 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1093 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1094 } else { 1095 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1096 } 1097 } 1098 1099 PluginManager pm = PluginManager.getInstance(context); 1100 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1101 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1102 } 1103 } 1104 } 1105 1106 private void setupPackageListener(Context context) { 1107 1108 /* 1109 * we must synchronize the instance check and the creation of the 1110 * receiver to ensure that only ONE receiver exists for all WebView 1111 * instances. 1112 */ 1113 synchronized (WebView.class) { 1114 1115 // if the receiver already exists then we do not need to register it 1116 // again 1117 if (sPackageInstallationReceiverAdded) { 1118 return; 1119 } 1120 1121 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1122 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1123 filter.addDataScheme("package"); 1124 BroadcastReceiver packageListener = new PackageListener(); 1125 context.getApplicationContext().registerReceiver(packageListener, filter); 1126 sPackageInstallationReceiverAdded = true; 1127 } 1128 1129 // check if any of the monitored apps are already installed 1130 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1131 1132 @Override 1133 protected Set<String> doInBackground(Void... unused) { 1134 Set<String> installedPackages = new HashSet<String>(); 1135 PackageManager pm = mContext.getPackageManager(); 1136 for (String name : sGoogleApps) { 1137 try { 1138 PackageInfo pInfo = pm.getPackageInfo(name, 1139 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1140 installedPackages.add(name); 1141 } catch(PackageManager.NameNotFoundException e) { 1142 // package not found 1143 } 1144 } 1145 return installedPackages; 1146 } 1147 1148 // Executes on the UI thread 1149 @Override 1150 protected void onPostExecute(Set<String> installedPackages) { 1151 if (mWebViewCore != null) { 1152 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1153 } 1154 } 1155 }; 1156 task.execute(); 1157 } 1158 1159 void updateMultiTouchSupport(Context context) { 1160 mZoomManager.updateMultiTouchSupport(context); 1161 } 1162 1163 private void init() { 1164 setWillNotDraw(false); 1165 setFocusable(true); 1166 setFocusableInTouchMode(true); 1167 setClickable(true); 1168 setLongClickable(true); 1169 1170 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1171 int slop = configuration.getScaledTouchSlop(); 1172 mTouchSlopSquare = slop * slop; 1173 mMinLockSnapReverseDistance = slop; 1174 slop = configuration.getScaledDoubleTapSlop(); 1175 mDoubleTapSlopSquare = slop * slop; 1176 final float density = getContext().getResources().getDisplayMetrics().density; 1177 // use one line height, 16 based on our current default font, for how 1178 // far we allow a touch be away from the edge of a link 1179 mNavSlop = (int) (16 * density); 1180 mZoomManager.init(density); 1181 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1182 1183 // Compute the inverse of the density squared. 1184 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1185 1186 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1187 mOverflingDistance = configuration.getScaledOverflingDistance(); 1188 1189 setScrollBarStyle(super.getScrollBarStyle()); 1190 // Initially use a size of two, since the user is likely to only hold 1191 // down two keys at a time (shift + another key) 1192 mKeysPressed = new Vector<Integer>(2); 1193 mHTML5VideoViewProxy = null ; 1194 } 1195 1196 /** 1197 * Adds accessibility APIs to JavaScript. 1198 * 1199 * Note: This method is responsible to performing the necessary 1200 * check if the accessibility APIs should be exposed. 1201 */ 1202 private void addAccessibilityApisToJavaScript() { 1203 if (AccessibilityManager.getInstance(mContext).isEnabled() 1204 && getSettings().getJavaScriptEnabled()) { 1205 // exposing the TTS for now ... 1206 mTextToSpeech = new TextToSpeech(getContext(), null); 1207 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1208 } 1209 } 1210 1211 /** 1212 * Removes accessibility APIs from JavaScript. 1213 */ 1214 private void removeAccessibilityApisFromJavaScript() { 1215 // exposing the TTS for now ... 1216 if (mTextToSpeech != null) { 1217 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1218 mTextToSpeech.shutdown(); 1219 mTextToSpeech = null; 1220 } 1221 } 1222 1223 @Override 1224 public void setOverScrollMode(int mode) { 1225 super.setOverScrollMode(mode); 1226 if (mode != OVER_SCROLL_NEVER) { 1227 if (mOverScrollGlow == null) { 1228 mOverScrollGlow = new OverScrollGlow(this); 1229 } 1230 } else { 1231 mOverScrollGlow = null; 1232 } 1233 } 1234 1235 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1236 final float density = mContext.getResources().getDisplayMetrics().density 1237 * 100 / zoomDensity; 1238 mNavSlop = (int) (16 * density); 1239 mZoomManager.updateDefaultZoomDensity(density); 1240 } 1241 1242 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1243 String password, final Message resumeMsg) { 1244 boolean rVal = false; 1245 if (resumeMsg == null) { 1246 // null resumeMsg implies saving password silently 1247 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1248 } else { 1249 final Message remember = mPrivateHandler.obtainMessage( 1250 REMEMBER_PASSWORD); 1251 remember.getData().putString("host", schemePlusHost); 1252 remember.getData().putString("username", username); 1253 remember.getData().putString("password", password); 1254 remember.obj = resumeMsg; 1255 1256 final Message neverRemember = mPrivateHandler.obtainMessage( 1257 NEVER_REMEMBER_PASSWORD); 1258 neverRemember.getData().putString("host", schemePlusHost); 1259 neverRemember.getData().putString("username", username); 1260 neverRemember.getData().putString("password", password); 1261 neverRemember.obj = resumeMsg; 1262 1263 new AlertDialog.Builder(getContext()) 1264 .setTitle(com.android.internal.R.string.save_password_label) 1265 .setMessage(com.android.internal.R.string.save_password_message) 1266 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1267 new DialogInterface.OnClickListener() { 1268 public void onClick(DialogInterface dialog, int which) { 1269 resumeMsg.sendToTarget(); 1270 } 1271 }) 1272 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1273 new DialogInterface.OnClickListener() { 1274 public void onClick(DialogInterface dialog, int which) { 1275 remember.sendToTarget(); 1276 } 1277 }) 1278 .setNegativeButton(com.android.internal.R.string.save_password_never, 1279 new DialogInterface.OnClickListener() { 1280 public void onClick(DialogInterface dialog, int which) { 1281 neverRemember.sendToTarget(); 1282 } 1283 }) 1284 .setOnCancelListener(new OnCancelListener() { 1285 public void onCancel(DialogInterface dialog) { 1286 resumeMsg.sendToTarget(); 1287 } 1288 }).show(); 1289 // Return true so that WebViewCore will pause while the dialog is 1290 // up. 1291 rVal = true; 1292 } 1293 return rVal; 1294 } 1295 1296 @Override 1297 public void setScrollBarStyle(int style) { 1298 if (style == View.SCROLLBARS_INSIDE_INSET 1299 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1300 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1301 } else { 1302 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1303 } 1304 super.setScrollBarStyle(style); 1305 } 1306 1307 /** 1308 * Specify whether the horizontal scrollbar has overlay style. 1309 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1310 */ 1311 public void setHorizontalScrollbarOverlay(boolean overlay) { 1312 mOverlayHorizontalScrollbar = overlay; 1313 } 1314 1315 /** 1316 * Specify whether the vertical scrollbar has overlay style. 1317 * @param overlay TRUE if vertical scrollbar should have overlay style. 1318 */ 1319 public void setVerticalScrollbarOverlay(boolean overlay) { 1320 mOverlayVerticalScrollbar = overlay; 1321 } 1322 1323 /** 1324 * Return whether horizontal scrollbar has overlay style 1325 * @return TRUE if horizontal scrollbar has overlay style. 1326 */ 1327 public boolean overlayHorizontalScrollbar() { 1328 return mOverlayHorizontalScrollbar; 1329 } 1330 1331 /** 1332 * Return whether vertical scrollbar has overlay style 1333 * @return TRUE if vertical scrollbar has overlay style. 1334 */ 1335 public boolean overlayVerticalScrollbar() { 1336 return mOverlayVerticalScrollbar; 1337 } 1338 1339 /* 1340 * Return the width of the view where the content of WebView should render 1341 * to. 1342 * Note: this can be called from WebCoreThread. 1343 */ 1344 /* package */ int getViewWidth() { 1345 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1346 return getWidth(); 1347 } else { 1348 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1349 } 1350 } 1351 1352 /** 1353 * returns the height of the titlebarview (if any). Does not care about 1354 * scrolling 1355 * @hide 1356 */ 1357 protected int getTitleHeight() { 1358 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1359 } 1360 1361 /** 1362 * Return the amount of the titlebarview (if any) that is visible 1363 * 1364 * @deprecated This method is now obsolete. 1365 */ 1366 public int getVisibleTitleHeight() { 1367 // need to restrict mScrollY due to over scroll 1368 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1369 } 1370 1371 /* 1372 * Return the height of the view where the content of WebView should render 1373 * to. Note that this excludes mTitleBar, if there is one. 1374 * Note: this can be called from WebCoreThread. 1375 */ 1376 /* package */ int getViewHeight() { 1377 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1378 } 1379 1380 private int getViewHeightWithTitle() { 1381 int height = getHeight(); 1382 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1383 height -= getHorizontalScrollbarHeight(); 1384 } 1385 return height; 1386 } 1387 1388 /** 1389 * @return The SSL certificate for the main top-level page or null if 1390 * there is no certificate (the site is not secure). 1391 */ 1392 public SslCertificate getCertificate() { 1393 return mCertificate; 1394 } 1395 1396 /** 1397 * Sets the SSL certificate for the main top-level page. 1398 */ 1399 public void setCertificate(SslCertificate certificate) { 1400 if (DebugFlags.WEB_VIEW) { 1401 Log.v(LOGTAG, "setCertificate=" + certificate); 1402 } 1403 // here, the certificate can be null (if the site is not secure) 1404 mCertificate = certificate; 1405 } 1406 1407 //------------------------------------------------------------------------- 1408 // Methods called by activity 1409 //------------------------------------------------------------------------- 1410 1411 /** 1412 * Save the username and password for a particular host in the WebView's 1413 * internal database. 1414 * @param host The host that required the credentials. 1415 * @param username The username for the given host. 1416 * @param password The password for the given host. 1417 */ 1418 public void savePassword(String host, String username, String password) { 1419 mDatabase.setUsernamePassword(host, username, password); 1420 } 1421 1422 /** 1423 * Set the HTTP authentication credentials for a given host and realm. 1424 * 1425 * @param host The host for the credentials. 1426 * @param realm The realm for the credentials. 1427 * @param username The username for the password. If it is null, it means 1428 * password can't be saved. 1429 * @param password The password 1430 */ 1431 public void setHttpAuthUsernamePassword(String host, String realm, 1432 String username, String password) { 1433 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1434 } 1435 1436 /** 1437 * Retrieve the HTTP authentication username and password for a given 1438 * host & realm pair 1439 * 1440 * @param host The host for which the credentials apply. 1441 * @param realm The realm for which the credentials apply. 1442 * @return String[] if found, String[0] is username, which can be null and 1443 * String[1] is password. Return null if it can't find anything. 1444 */ 1445 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1446 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1447 } 1448 1449 /** 1450 * Remove Find or Select ActionModes, if active. 1451 */ 1452 private void clearActionModes() { 1453 if (mSelectCallback != null) { 1454 mSelectCallback.finish(); 1455 } 1456 if (mFindCallback != null) { 1457 mFindCallback.finish(); 1458 } 1459 } 1460 1461 /** 1462 * Called to clear state when moving from one page to another, or changing 1463 * in some other way that makes elements associated with the current page 1464 * (such as WebTextView or ActionModes) no longer relevant. 1465 */ 1466 private void clearHelpers() { 1467 clearTextEntry(); 1468 clearActionModes(); 1469 dismissFullScreenMode(); 1470 } 1471 1472 /** 1473 * Destroy the internal state of the WebView. This method should be called 1474 * after the WebView has been removed from the view system. No other 1475 * methods may be called on a WebView after destroy. 1476 */ 1477 public void destroy() { 1478 clearHelpers(); 1479 if (mListBoxDialog != null) { 1480 mListBoxDialog.dismiss(); 1481 mListBoxDialog = null; 1482 } 1483 if (mNativeClass != 0) nativeStopGL(); 1484 if (mWebViewCore != null) { 1485 // Set the handlers to null before destroying WebViewCore so no 1486 // more messages will be posted. 1487 mCallbackProxy.setWebViewClient(null); 1488 mCallbackProxy.setWebChromeClient(null); 1489 // Tell WebViewCore to destroy itself 1490 synchronized (this) { 1491 WebViewCore webViewCore = mWebViewCore; 1492 mWebViewCore = null; // prevent using partial webViewCore 1493 webViewCore.destroy(); 1494 } 1495 // Remove any pending messages that might not be serviced yet. 1496 mPrivateHandler.removeCallbacksAndMessages(null); 1497 mCallbackProxy.removeCallbacksAndMessages(null); 1498 // Wake up the WebCore thread just in case it is waiting for a 1499 // JavaScript dialog. 1500 synchronized (mCallbackProxy) { 1501 mCallbackProxy.notify(); 1502 } 1503 } 1504 if (mNativeClass != 0) { 1505 nativeDestroy(); 1506 mNativeClass = 0; 1507 } 1508 } 1509 1510 /** 1511 * Enables platform notifications of data state and proxy changes. 1512 */ 1513 public static void enablePlatformNotifications() { 1514 Network.enablePlatformNotifications(); 1515 } 1516 1517 /** 1518 * If platform notifications are enabled, this should be called 1519 * from the Activity's onPause() or onStop(). 1520 */ 1521 public static void disablePlatformNotifications() { 1522 Network.disablePlatformNotifications(); 1523 } 1524 1525 /** 1526 * Sets JavaScript engine flags. 1527 * 1528 * @param flags JS engine flags in a String 1529 * 1530 * @hide pending API solidification 1531 */ 1532 public void setJsFlags(String flags) { 1533 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1534 } 1535 1536 /** 1537 * Inform WebView of the network state. This is used to set 1538 * the JavaScript property window.navigator.isOnline and 1539 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1540 * @param networkUp boolean indicating if network is available 1541 */ 1542 public void setNetworkAvailable(boolean networkUp) { 1543 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1544 networkUp ? 1 : 0, 0); 1545 } 1546 1547 /** 1548 * Inform WebView about the current network type. 1549 * {@hide} 1550 */ 1551 public void setNetworkType(String type, String subtype) { 1552 Map<String, String> map = new HashMap<String, String>(); 1553 map.put("type", type); 1554 map.put("subtype", subtype); 1555 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1556 } 1557 /** 1558 * Save the state of this WebView used in 1559 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1560 * method no longer stores the display data for this WebView. The previous 1561 * behavior could potentially leak files if {@link #restoreState} was never 1562 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1563 * and restoring the display data. 1564 * @param outState The Bundle to store the WebView state. 1565 * @return The same copy of the back/forward list used to save the state. If 1566 * saveState fails, the returned list will be null. 1567 * @see #savePicture 1568 * @see #restorePicture 1569 */ 1570 public WebBackForwardList saveState(Bundle outState) { 1571 if (outState == null) { 1572 return null; 1573 } 1574 // We grab a copy of the back/forward list because a client of WebView 1575 // may have invalidated the history list by calling clearHistory. 1576 WebBackForwardList list = copyBackForwardList(); 1577 final int currentIndex = list.getCurrentIndex(); 1578 final int size = list.getSize(); 1579 // We should fail saving the state if the list is empty or the index is 1580 // not in a valid range. 1581 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1582 return null; 1583 } 1584 outState.putInt("index", currentIndex); 1585 // FIXME: This should just be a byte[][] instead of ArrayList but 1586 // Parcel.java does not have the code to handle multi-dimensional 1587 // arrays. 1588 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1589 for (int i = 0; i < size; i++) { 1590 WebHistoryItem item = list.getItemAtIndex(i); 1591 if (null == item) { 1592 // FIXME: this shouldn't happen 1593 // need to determine how item got set to null 1594 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1595 return null; 1596 } 1597 byte[] data = item.getFlattenedData(); 1598 if (data == null) { 1599 // It would be very odd to not have any data for a given history 1600 // item. And we will fail to rebuild the history list without 1601 // flattened data. 1602 return null; 1603 } 1604 history.add(data); 1605 } 1606 outState.putSerializable("history", history); 1607 if (mCertificate != null) { 1608 outState.putBundle("certificate", 1609 SslCertificate.saveState(mCertificate)); 1610 } 1611 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1612 mZoomManager.saveZoomState(outState); 1613 return list; 1614 } 1615 1616 /** 1617 * Save the current display data to the Bundle given. Used in conjunction 1618 * with {@link #saveState}. 1619 * @param b A Bundle to store the display data. 1620 * @param dest The file to store the serialized picture data. Will be 1621 * overwritten with this WebView's picture data. 1622 * @return True if the picture was successfully saved. 1623 */ 1624 public boolean savePicture(Bundle b, final File dest) { 1625 if (dest == null || b == null) { 1626 return false; 1627 } 1628 final Picture p = capturePicture(); 1629 // Use a temporary file while writing to ensure the destination file 1630 // contains valid data. 1631 final File temp = new File(dest.getPath() + ".writing"); 1632 new Thread(new Runnable() { 1633 public void run() { 1634 FileOutputStream out = null; 1635 try { 1636 out = new FileOutputStream(temp); 1637 p.writeToStream(out); 1638 // Writing the picture succeeded, rename the temporary file 1639 // to the destination. 1640 temp.renameTo(dest); 1641 } catch (Exception e) { 1642 // too late to do anything about it. 1643 } finally { 1644 if (out != null) { 1645 try { 1646 out.close(); 1647 } catch (Exception e) { 1648 // Can't do anything about that 1649 } 1650 } 1651 temp.delete(); 1652 } 1653 } 1654 }).start(); 1655 // now update the bundle 1656 b.putInt("scrollX", mScrollX); 1657 b.putInt("scrollY", mScrollY); 1658 mZoomManager.saveZoomState(b); 1659 return true; 1660 } 1661 1662 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1663 int sx = b.getInt("scrollX", 0); 1664 int sy = b.getInt("scrollY", 0); 1665 1666 mDrawHistory = true; 1667 mHistoryPicture = p; 1668 1669 mScrollX = sx; 1670 mScrollY = sy; 1671 mZoomManager.restoreZoomState(b); 1672 final float scale = mZoomManager.getScale(); 1673 mHistoryWidth = Math.round(p.getWidth() * scale); 1674 mHistoryHeight = Math.round(p.getHeight() * scale); 1675 1676 invalidate(); 1677 } 1678 1679 /** 1680 * Restore the display data that was save in {@link #savePicture}. Used in 1681 * conjunction with {@link #restoreState}. 1682 * @param b A Bundle containing the saved display data. 1683 * @param src The file where the picture data was stored. 1684 * @return True if the picture was successfully restored. 1685 */ 1686 public boolean restorePicture(Bundle b, File src) { 1687 if (src == null || b == null) { 1688 return false; 1689 } 1690 if (!src.exists()) { 1691 return false; 1692 } 1693 try { 1694 final FileInputStream in = new FileInputStream(src); 1695 final Bundle copy = new Bundle(b); 1696 new Thread(new Runnable() { 1697 public void run() { 1698 try { 1699 final Picture p = Picture.createFromStream(in); 1700 if (p != null) { 1701 // Post a runnable on the main thread to update the 1702 // history picture fields. 1703 mPrivateHandler.post(new Runnable() { 1704 public void run() { 1705 restoreHistoryPictureFields(p, copy); 1706 } 1707 }); 1708 } 1709 } finally { 1710 try { 1711 in.close(); 1712 } catch (Exception e) { 1713 // Nothing we can do now. 1714 } 1715 } 1716 } 1717 }).start(); 1718 } catch (FileNotFoundException e){ 1719 e.printStackTrace(); 1720 } 1721 return true; 1722 } 1723 1724 /** 1725 * Restore the state of this WebView from the given map used in 1726 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1727 * be called to restore the state of the WebView before using the object. If 1728 * it is called after the WebView has had a chance to build state (load 1729 * pages, create a back/forward list, etc.) there may be undesirable 1730 * side-effects. Please note that this method no longer restores the 1731 * display data for this WebView. See {@link #savePicture} and {@link 1732 * #restorePicture} for saving and restoring the display data. 1733 * @param inState The incoming Bundle of state. 1734 * @return The restored back/forward list or null if restoreState failed. 1735 * @see #savePicture 1736 * @see #restorePicture 1737 */ 1738 public WebBackForwardList restoreState(Bundle inState) { 1739 WebBackForwardList returnList = null; 1740 if (inState == null) { 1741 return returnList; 1742 } 1743 if (inState.containsKey("index") && inState.containsKey("history")) { 1744 mCertificate = SslCertificate.restoreState( 1745 inState.getBundle("certificate")); 1746 1747 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1748 final int index = inState.getInt("index"); 1749 // We can't use a clone of the list because we need to modify the 1750 // shared copy, so synchronize instead to prevent concurrent 1751 // modifications. 1752 synchronized (list) { 1753 final List<byte[]> history = 1754 (List<byte[]>) inState.getSerializable("history"); 1755 final int size = history.size(); 1756 // Check the index bounds so we don't crash in native code while 1757 // restoring the history index. 1758 if (index < 0 || index >= size) { 1759 return null; 1760 } 1761 for (int i = 0; i < size; i++) { 1762 byte[] data = history.remove(0); 1763 if (data == null) { 1764 // If we somehow have null data, we cannot reconstruct 1765 // the item and thus our history list cannot be rebuilt. 1766 return null; 1767 } 1768 WebHistoryItem item = new WebHistoryItem(data); 1769 list.addHistoryItem(item); 1770 } 1771 // Grab the most recent copy to return to the caller. 1772 returnList = copyBackForwardList(); 1773 // Update the copy to have the correct index. 1774 returnList.setCurrentIndex(index); 1775 } 1776 // Restore private browsing setting. 1777 if (inState.getBoolean("privateBrowsingEnabled")) { 1778 getSettings().setPrivateBrowsingEnabled(true); 1779 } 1780 mZoomManager.restoreZoomState(inState); 1781 // Remove all pending messages because we are restoring previous 1782 // state. 1783 mWebViewCore.removeMessages(); 1784 // Send a restore state message. 1785 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1786 } 1787 return returnList; 1788 } 1789 1790 /** 1791 * Load the given url with the extra headers. 1792 * @param url The url of the resource to load. 1793 * @param extraHeaders The extra headers sent with this url. This should not 1794 * include the common headers like "user-agent". If it does, it 1795 * will be replaced by the intrinsic value of the WebView. 1796 */ 1797 public void loadUrl(String url, Map<String, String> extraHeaders) { 1798 switchOutDrawHistory(); 1799 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1800 arg.mUrl = url; 1801 arg.mExtraHeaders = extraHeaders; 1802 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1803 clearHelpers(); 1804 } 1805 1806 /** 1807 * Load the given url. 1808 * @param url The url of the resource to load. 1809 */ 1810 public void loadUrl(String url) { 1811 if (url == null) { 1812 return; 1813 } 1814 loadUrl(url, null); 1815 } 1816 1817 /** 1818 * Load the url with postData using "POST" method into the WebView. If url 1819 * is not a network url, it will be loaded with {link 1820 * {@link #loadUrl(String)} instead. 1821 * 1822 * @param url The url of the resource to load. 1823 * @param postData The data will be passed to "POST" request. 1824 */ 1825 public void postUrl(String url, byte[] postData) { 1826 if (URLUtil.isNetworkUrl(url)) { 1827 switchOutDrawHistory(); 1828 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1829 arg.mUrl = url; 1830 arg.mPostData = postData; 1831 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1832 clearHelpers(); 1833 } else { 1834 loadUrl(url); 1835 } 1836 } 1837 1838 /** 1839 * Load the given data into the WebView. This will load the data into 1840 * WebView using the data: scheme. Content loaded through this mechanism 1841 * does not have the ability to load content from the network. 1842 * @param data A String of data in the given encoding. The date must 1843 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1844 * %27, %3f respectively. 1845 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1846 * @param encoding The encoding of the data. i.e. utf-8, base64 1847 */ 1848 public void loadData(String data, String mimeType, String encoding) { 1849 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1850 } 1851 1852 /** 1853 * Load the given data into the WebView, use the provided URL as the base 1854 * URL for the content. The base URL is the URL that represents the page 1855 * that is loaded through this interface. As such, it is used to resolve any 1856 * relative URLs. The historyUrl is used for the history entry. 1857 * <p> 1858 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1859 * files through "file:///android_asset/" for the sub resources is more 1860 * restricted. If you provide null or empty string as baseUrl, you won't be 1861 * able to access asset files. If the baseUrl is anything other than 1862 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1863 * sub resources. 1864 * 1865 * @param baseUrl Url to resolve relative paths with, if null defaults to 1866 * "about:blank" 1867 * @param data A String of data in the given encoding. 1868 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1869 * defaults to "text/html" 1870 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1871 * @param historyUrl URL to use as the history entry. Can be null. 1872 */ 1873 public void loadDataWithBaseURL(String baseUrl, String data, 1874 String mimeType, String encoding, String historyUrl) { 1875 1876 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1877 loadData(data, mimeType, encoding); 1878 return; 1879 } 1880 switchOutDrawHistory(); 1881 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1882 arg.mBaseUrl = baseUrl; 1883 arg.mData = data; 1884 arg.mMimeType = mimeType; 1885 arg.mEncoding = encoding; 1886 arg.mHistoryUrl = historyUrl; 1887 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1888 clearHelpers(); 1889 } 1890 1891 /** 1892 * Saves the current view as a web archive. 1893 * 1894 * @param filename The filename where the archive should be placed. 1895 */ 1896 public void saveWebArchive(String filename) { 1897 saveWebArchive(filename, false, null); 1898 } 1899 1900 /* package */ static class SaveWebArchiveMessage { 1901 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1902 mBasename = basename; 1903 mAutoname = autoname; 1904 mCallback = callback; 1905 } 1906 1907 /* package */ final String mBasename; 1908 /* package */ final boolean mAutoname; 1909 /* package */ final ValueCallback<String> mCallback; 1910 /* package */ String mResultFile; 1911 } 1912 1913 /** 1914 * Saves the current view as a web archive. 1915 * 1916 * @param basename The filename where the archive should be placed. 1917 * @param autoname If false, takes basename to be a file. If true, basename 1918 * is assumed to be a directory in which a filename will be 1919 * chosen according to the url of the current page. 1920 * @param callback Called after the web archive has been saved. The 1921 * parameter for onReceiveValue will either be the filename 1922 * under which the file was saved, or null if saving the 1923 * file failed. 1924 */ 1925 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1926 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1927 new SaveWebArchiveMessage(basename, autoname, callback)); 1928 } 1929 1930 /** 1931 * Stop the current load. 1932 */ 1933 public void stopLoading() { 1934 // TODO: should we clear all the messages in the queue before sending 1935 // STOP_LOADING? 1936 switchOutDrawHistory(); 1937 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1938 } 1939 1940 /** 1941 * Reload the current url. 1942 */ 1943 public void reload() { 1944 clearHelpers(); 1945 switchOutDrawHistory(); 1946 mWebViewCore.sendMessage(EventHub.RELOAD); 1947 } 1948 1949 /** 1950 * Return true if this WebView has a back history item. 1951 * @return True iff this WebView has a back history item. 1952 */ 1953 public boolean canGoBack() { 1954 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1955 synchronized (l) { 1956 if (l.getClearPending()) { 1957 return false; 1958 } else { 1959 return l.getCurrentIndex() > 0; 1960 } 1961 } 1962 } 1963 1964 /** 1965 * Go back in the history of this WebView. 1966 */ 1967 public void goBack() { 1968 goBackOrForward(-1); 1969 } 1970 1971 /** 1972 * Return true if this WebView has a forward history item. 1973 * @return True iff this Webview has a forward history item. 1974 */ 1975 public boolean canGoForward() { 1976 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1977 synchronized (l) { 1978 if (l.getClearPending()) { 1979 return false; 1980 } else { 1981 return l.getCurrentIndex() < l.getSize() - 1; 1982 } 1983 } 1984 } 1985 1986 /** 1987 * Go forward in the history of this WebView. 1988 */ 1989 public void goForward() { 1990 goBackOrForward(1); 1991 } 1992 1993 /** 1994 * Return true if the page can go back or forward the given 1995 * number of steps. 1996 * @param steps The negative or positive number of steps to move the 1997 * history. 1998 */ 1999 public boolean canGoBackOrForward(int steps) { 2000 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2001 synchronized (l) { 2002 if (l.getClearPending()) { 2003 return false; 2004 } else { 2005 int newIndex = l.getCurrentIndex() + steps; 2006 return newIndex >= 0 && newIndex < l.getSize(); 2007 } 2008 } 2009 } 2010 2011 /** 2012 * Go to the history item that is the number of steps away from 2013 * the current item. Steps is negative if backward and positive 2014 * if forward. 2015 * @param steps The number of steps to take back or forward in the back 2016 * forward list. 2017 */ 2018 public void goBackOrForward(int steps) { 2019 goBackOrForward(steps, false); 2020 } 2021 2022 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2023 if (steps != 0) { 2024 clearHelpers(); 2025 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2026 ignoreSnapshot ? 1 : 0); 2027 } 2028 } 2029 2030 /** 2031 * Returns true if private browsing is enabled in this WebView. 2032 */ 2033 public boolean isPrivateBrowsingEnabled() { 2034 return getSettings().isPrivateBrowsingEnabled(); 2035 } 2036 2037 private void startPrivateBrowsing() { 2038 getSettings().setPrivateBrowsingEnabled(true); 2039 } 2040 2041 private boolean extendScroll(int y) { 2042 int finalY = mScroller.getFinalY(); 2043 int newY = pinLocY(finalY + y); 2044 if (newY == finalY) return false; 2045 mScroller.setFinalY(newY); 2046 mScroller.extendDuration(computeDuration(0, y)); 2047 return true; 2048 } 2049 2050 /** 2051 * Scroll the contents of the view up by half the view size 2052 * @param top true to jump to the top of the page 2053 * @return true if the page was scrolled 2054 */ 2055 public boolean pageUp(boolean top) { 2056 if (mNativeClass == 0) { 2057 return false; 2058 } 2059 nativeClearCursor(); // start next trackball movement from page edge 2060 if (top) { 2061 // go to the top of the document 2062 return pinScrollTo(mScrollX, 0, true, 0); 2063 } 2064 // Page up 2065 int h = getHeight(); 2066 int y; 2067 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2068 y = -h + PAGE_SCROLL_OVERLAP; 2069 } else { 2070 y = -h / 2; 2071 } 2072 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2073 : extendScroll(y); 2074 } 2075 2076 /** 2077 * Scroll the contents of the view down by half the page size 2078 * @param bottom true to jump to bottom of page 2079 * @return true if the page was scrolled 2080 */ 2081 public boolean pageDown(boolean bottom) { 2082 if (mNativeClass == 0) { 2083 return false; 2084 } 2085 nativeClearCursor(); // start next trackball movement from page edge 2086 if (bottom) { 2087 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2088 } 2089 // Page down. 2090 int h = getHeight(); 2091 int y; 2092 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2093 y = h - PAGE_SCROLL_OVERLAP; 2094 } else { 2095 y = h / 2; 2096 } 2097 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2098 : extendScroll(y); 2099 } 2100 2101 /** 2102 * Clear the view so that onDraw() will draw nothing but white background, 2103 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2104 */ 2105 public void clearView() { 2106 mContentWidth = 0; 2107 mContentHeight = 0; 2108 setBaseLayer(0, null, false, false); 2109 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2110 } 2111 2112 /** 2113 * Return a new picture that captures the current display of the webview. 2114 * This is a copy of the display, and will be unaffected if the webview 2115 * later loads a different URL. 2116 * 2117 * @return a picture containing the current contents of the view. Note this 2118 * picture is of the entire document, and is not restricted to the 2119 * bounds of the view. 2120 */ 2121 public Picture capturePicture() { 2122 if (mNativeClass == 0) return null; 2123 Picture result = new Picture(); 2124 nativeCopyBaseContentToPicture(result); 2125 return result; 2126 } 2127 2128 /** 2129 * Return true if the browser is displaying a TextView for text input. 2130 */ 2131 private boolean inEditingMode() { 2132 return mWebTextView != null && mWebTextView.getParent() != null; 2133 } 2134 2135 /** 2136 * Remove the WebTextView. 2137 */ 2138 private void clearTextEntry() { 2139 if (inEditingMode()) { 2140 mWebTextView.remove(); 2141 } else { 2142 // The keyboard may be open with the WebView as the served view 2143 hideSoftKeyboard(); 2144 } 2145 } 2146 2147 /** 2148 * Return the current scale of the WebView 2149 * @return The current scale. 2150 */ 2151 public float getScale() { 2152 return mZoomManager.getScale(); 2153 } 2154 2155 /** 2156 * Set the initial scale for the WebView. 0 means default. If 2157 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2158 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2159 * WebView starts will this value as initial scale. 2160 * 2161 * @param scaleInPercent The initial scale in percent. 2162 */ 2163 public void setInitialScale(int scaleInPercent) { 2164 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2165 } 2166 2167 /** 2168 * Invoke the graphical zoom picker widget for this WebView. This will 2169 * result in the zoom widget appearing on the screen to control the zoom 2170 * level of this WebView. 2171 */ 2172 public void invokeZoomPicker() { 2173 if (!getSettings().supportZoom()) { 2174 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2175 return; 2176 } 2177 clearHelpers(); 2178 mZoomManager.invokeZoomPicker(); 2179 } 2180 2181 /** 2182 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2183 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2184 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2185 * anchor does not have a url or if it is a JavaScript url, the type will 2186 * be UNKNOWN_TYPE and the url has to be retrieved through 2187 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2188 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2189 * the "extra" field. A type of 2190 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2191 * a child node. If a phone number is found, the HitTestResult type is set 2192 * to PHONE_TYPE and the phone number is set in the "extra" field of 2193 * HitTestResult. If a map address is found, the HitTestResult type is set 2194 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2195 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2196 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2197 * HitTestResult type is set to UNKNOWN_TYPE. 2198 */ 2199 public HitTestResult getHitTestResult() { 2200 return hitTestResult(mInitialHitTestResult); 2201 } 2202 2203 private HitTestResult hitTestResult(HitTestResult fallback) { 2204 if (mNativeClass == 0) { 2205 return null; 2206 } 2207 2208 HitTestResult result = new HitTestResult(); 2209 if (nativeHasCursorNode()) { 2210 if (nativeCursorIsTextInput()) { 2211 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2212 } else { 2213 String text = nativeCursorText(); 2214 if (text != null) { 2215 if (text.startsWith(SCHEME_TEL)) { 2216 result.setType(HitTestResult.PHONE_TYPE); 2217 result.setExtra(text.substring(SCHEME_TEL.length())); 2218 } else if (text.startsWith(SCHEME_MAILTO)) { 2219 result.setType(HitTestResult.EMAIL_TYPE); 2220 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2221 } else if (text.startsWith(SCHEME_GEO)) { 2222 result.setType(HitTestResult.GEO_TYPE); 2223 result.setExtra(URLDecoder.decode(text 2224 .substring(SCHEME_GEO.length()))); 2225 } else if (nativeCursorIsAnchor()) { 2226 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2227 result.setExtra(text); 2228 } 2229 } 2230 } 2231 } else if (fallback != null) { 2232 /* If webkit causes a rebuild while the long press is in progress, 2233 * the cursor node may be reset, even if it is still around. This 2234 * uses the cursor node saved when the touch began. Since the 2235 * nativeImageURI below only changes the result if it is successful, 2236 * this uses the data beneath the touch if available or the original 2237 * tap data otherwise. 2238 */ 2239 Log.v(LOGTAG, "hitTestResult use fallback"); 2240 result = fallback; 2241 } 2242 int type = result.getType(); 2243 if (type == HitTestResult.UNKNOWN_TYPE 2244 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2245 // Now check to see if it is an image. 2246 int contentX = viewToContentX(mLastTouchX + mScrollX); 2247 int contentY = viewToContentY(mLastTouchY + mScrollY); 2248 String text = nativeImageURI(contentX, contentY); 2249 if (text != null) { 2250 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2251 HitTestResult.IMAGE_TYPE : 2252 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2253 result.setExtra(text); 2254 } 2255 } 2256 return result; 2257 } 2258 2259 // Called by JNI when the DOM has changed the focus. Clear the focus so 2260 // that new keys will go to the newly focused field 2261 private void domChangedFocus() { 2262 if (inEditingMode()) { 2263 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2264 } 2265 } 2266 /** 2267 * Request the anchor or image element URL at the last tapped point. 2268 * If hrefMsg is null, this method returns immediately and does not 2269 * dispatch hrefMsg to its target. If the tapped point hits an image, 2270 * an anchor, or an image in an anchor, the message associates 2271 * strings in named keys in its data. The value paired with the key 2272 * may be an empty string. 2273 * 2274 * @param hrefMsg This message will be dispatched with the result of the 2275 * request. The message data contains three keys: 2276 * - "url" returns the anchor's href attribute. 2277 * - "title" returns the anchor's text. 2278 * - "src" returns the image's src attribute. 2279 */ 2280 public void requestFocusNodeHref(Message hrefMsg) { 2281 if (hrefMsg == null) { 2282 return; 2283 } 2284 int contentX = viewToContentX(mLastTouchX + mScrollX); 2285 int contentY = viewToContentY(mLastTouchY + mScrollY); 2286 if (nativeHasCursorNode()) { 2287 Rect cursorBounds = nativeGetCursorRingBounds(); 2288 if (!cursorBounds.contains(contentX, contentY)) { 2289 int slop = viewToContentDimension(mNavSlop); 2290 cursorBounds.inset(-slop, -slop); 2291 if (cursorBounds.contains(contentX, contentY)) { 2292 contentX = (int) cursorBounds.centerX(); 2293 contentY = (int) cursorBounds.centerY(); 2294 } 2295 } 2296 } 2297 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2298 contentX, contentY, hrefMsg); 2299 } 2300 2301 /** 2302 * Request the url of the image last touched by the user. msg will be sent 2303 * to its target with a String representing the url as its object. 2304 * 2305 * @param msg This message will be dispatched with the result of the request 2306 * as the data member with "url" as key. The result can be null. 2307 */ 2308 public void requestImageRef(Message msg) { 2309 if (0 == mNativeClass) return; // client isn't initialized 2310 int contentX = viewToContentX(mLastTouchX + mScrollX); 2311 int contentY = viewToContentY(mLastTouchY + mScrollY); 2312 String ref = nativeImageURI(contentX, contentY); 2313 Bundle data = msg.getData(); 2314 data.putString("url", ref); 2315 msg.setData(data); 2316 msg.sendToTarget(); 2317 } 2318 2319 static int pinLoc(int x, int viewMax, int docMax) { 2320// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2321 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2322 // pin the short document to the top/left of the screen 2323 x = 0; 2324// Log.d(LOGTAG, "--- center " + x); 2325 } else if (x < 0) { 2326 x = 0; 2327// Log.d(LOGTAG, "--- zero"); 2328 } else if (x + viewMax > docMax) { 2329 x = docMax - viewMax; 2330// Log.d(LOGTAG, "--- pin " + x); 2331 } 2332 return x; 2333 } 2334 2335 // Expects x in view coordinates 2336 int pinLocX(int x) { 2337 if (mInOverScrollMode) return x; 2338 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2339 } 2340 2341 // Expects y in view coordinates 2342 int pinLocY(int y) { 2343 if (mInOverScrollMode) return y; 2344 return pinLoc(y, getViewHeightWithTitle(), 2345 computeRealVerticalScrollRange() + getTitleHeight()); 2346 } 2347 2348 /** 2349 * A title bar which is embedded in this WebView, and scrolls along with it 2350 * vertically, but not horizontally. 2351 */ 2352 private View mTitleBar; 2353 2354 /** 2355 * the title bar rendering gravity 2356 */ 2357 private int mTitleGravity; 2358 2359 /** 2360 * Add or remove a title bar to be embedded into the WebView, and scroll 2361 * along with it vertically, while remaining in view horizontally. Pass 2362 * null to remove the title bar from the WebView, and return to drawing 2363 * the WebView normally without translating to account for the title bar. 2364 * @hide 2365 */ 2366 public void setEmbeddedTitleBar(View v) { 2367 if (mTitleBar == v) return; 2368 if (mTitleBar != null) { 2369 removeView(mTitleBar); 2370 } 2371 if (null != v) { 2372 addView(v, new AbsoluteLayout.LayoutParams( 2373 ViewGroup.LayoutParams.MATCH_PARENT, 2374 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2375 } 2376 mTitleBar = v; 2377 } 2378 2379 /** 2380 * Set where to render the embedded title bar 2381 * NO_GRAVITY at the top of the page 2382 * TOP at the top of the screen 2383 * @hide 2384 */ 2385 public void setTitleBarGravity(int gravity) { 2386 mTitleGravity = gravity; 2387 // force refresh 2388 invalidate(); 2389 } 2390 2391 /** 2392 * Given a distance in view space, convert it to content space. Note: this 2393 * does not reflect translation, just scaling, so this should not be called 2394 * with coordinates, but should be called for dimensions like width or 2395 * height. 2396 */ 2397 private int viewToContentDimension(int d) { 2398 return Math.round(d * mZoomManager.getInvScale()); 2399 } 2400 2401 /** 2402 * Given an x coordinate in view space, convert it to content space. Also 2403 * may be used for absolute heights (such as for the WebTextView's 2404 * textSize, which is unaffected by the height of the title bar). 2405 */ 2406 /*package*/ int viewToContentX(int x) { 2407 return viewToContentDimension(x); 2408 } 2409 2410 /** 2411 * Given a y coordinate in view space, convert it to content space. 2412 * Takes into account the height of the title bar if there is one 2413 * embedded into the WebView. 2414 */ 2415 /*package*/ int viewToContentY(int y) { 2416 return viewToContentDimension(y - getTitleHeight()); 2417 } 2418 2419 /** 2420 * Given a x coordinate in view space, convert it to content space. 2421 * Returns the result as a float. 2422 */ 2423 private float viewToContentXf(int x) { 2424 return x * mZoomManager.getInvScale(); 2425 } 2426 2427 /** 2428 * Given a y coordinate in view space, convert it to content space. 2429 * Takes into account the height of the title bar if there is one 2430 * embedded into the WebView. Returns the result as a float. 2431 */ 2432 private float viewToContentYf(int y) { 2433 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2434 } 2435 2436 /** 2437 * Given a distance in content space, convert it to view space. Note: this 2438 * does not reflect translation, just scaling, so this should not be called 2439 * with coordinates, but should be called for dimensions like width or 2440 * height. 2441 */ 2442 /*package*/ int contentToViewDimension(int d) { 2443 return Math.round(d * mZoomManager.getScale()); 2444 } 2445 2446 /** 2447 * Given an x coordinate in content space, convert it to view 2448 * space. 2449 */ 2450 /*package*/ int contentToViewX(int x) { 2451 return contentToViewDimension(x); 2452 } 2453 2454 /** 2455 * Given a y coordinate in content space, convert it to view 2456 * space. Takes into account the height of the title bar. 2457 */ 2458 /*package*/ int contentToViewY(int y) { 2459 return contentToViewDimension(y) + getTitleHeight(); 2460 } 2461 2462 private Rect contentToViewRect(Rect x) { 2463 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2464 contentToViewX(x.right), contentToViewY(x.bottom)); 2465 } 2466 2467 /* To invalidate a rectangle in content coordinates, we need to transform 2468 the rect into view coordinates, so we can then call invalidate(...). 2469 2470 Normally, we would just call contentToView[XY](...), which eventually 2471 calls Math.round(coordinate * mActualScale). However, for invalidates, 2472 we need to account for the slop that occurs with antialiasing. To 2473 address that, we are a little more liberal in the size of the rect that 2474 we invalidate. 2475 2476 This liberal calculation calls floor() for the top/left, and ceil() for 2477 the bottom/right coordinates. This catches the possible extra pixels of 2478 antialiasing that we might have missed with just round(). 2479 */ 2480 2481 // Called by JNI to invalidate the View, given rectangle coordinates in 2482 // content space 2483 private void viewInvalidate(int l, int t, int r, int b) { 2484 final float scale = mZoomManager.getScale(); 2485 final int dy = getTitleHeight(); 2486 invalidate((int)Math.floor(l * scale), 2487 (int)Math.floor(t * scale) + dy, 2488 (int)Math.ceil(r * scale), 2489 (int)Math.ceil(b * scale) + dy); 2490 } 2491 2492 // Called by JNI to invalidate the View after a delay, given rectangle 2493 // coordinates in content space 2494 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2495 final float scale = mZoomManager.getScale(); 2496 final int dy = getTitleHeight(); 2497 postInvalidateDelayed(delay, 2498 (int)Math.floor(l * scale), 2499 (int)Math.floor(t * scale) + dy, 2500 (int)Math.ceil(r * scale), 2501 (int)Math.ceil(b * scale) + dy); 2502 } 2503 2504 private void invalidateContentRect(Rect r) { 2505 viewInvalidate(r.left, r.top, r.right, r.bottom); 2506 } 2507 2508 // stop the scroll animation, and don't let a subsequent fling add 2509 // to the existing velocity 2510 private void abortAnimation() { 2511 mScroller.abortAnimation(); 2512 mLastVelocity = 0; 2513 } 2514 2515 /* call from webcoreview.draw(), so we're still executing in the UI thread 2516 */ 2517 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2518 2519 // premature data from webkit, ignore 2520 if ((w | h) == 0) { 2521 return; 2522 } 2523 2524 // don't abort a scroll animation if we didn't change anything 2525 if (mContentWidth != w || mContentHeight != h) { 2526 // record new dimensions 2527 mContentWidth = w; 2528 mContentHeight = h; 2529 // If history Picture is drawn, don't update scroll. They will be 2530 // updated when we get out of that mode. 2531 if (!mDrawHistory) { 2532 // repin our scroll, taking into account the new content size 2533 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2534 if (!mScroller.isFinished()) { 2535 // We are in the middle of a scroll. Repin the final scroll 2536 // position. 2537 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2538 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2539 } 2540 } 2541 } 2542 contentSizeChanged(updateLayout); 2543 } 2544 2545 // Used to avoid sending many visible rect messages. 2546 private Rect mLastVisibleRectSent; 2547 private Rect mLastGlobalRect; 2548 2549 Rect sendOurVisibleRect() { 2550 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2551 Rect rect = new Rect(); 2552 calcOurContentVisibleRect(rect); 2553 // Rect.equals() checks for null input. 2554 if (!rect.equals(mLastVisibleRectSent)) { 2555 Point pos = new Point(rect.left, rect.top); 2556 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2557 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2558 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2559 mLastVisibleRectSent = rect; 2560 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2561 } 2562 Rect globalRect = new Rect(); 2563 if (getGlobalVisibleRect(globalRect) 2564 && !globalRect.equals(mLastGlobalRect)) { 2565 if (DebugFlags.WEB_VIEW) { 2566 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2567 + globalRect.top + ",r=" + globalRect.right + ",b=" 2568 + globalRect.bottom); 2569 } 2570 // TODO: the global offset is only used by windowRect() 2571 // in ChromeClientAndroid ; other clients such as touch 2572 // and mouse events could return view + screen relative points. 2573 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2574 mLastGlobalRect = globalRect; 2575 } 2576 return rect; 2577 } 2578 2579 // Sets r to be the visible rectangle of our webview in view coordinates 2580 private void calcOurVisibleRect(Rect r) { 2581 Point p = new Point(); 2582 getGlobalVisibleRect(r, p); 2583 r.offset(-p.x, -p.y); 2584 } 2585 2586 // Sets r to be our visible rectangle in content coordinates 2587 private void calcOurContentVisibleRect(Rect r) { 2588 calcOurVisibleRect(r); 2589 r.left = viewToContentX(r.left); 2590 // viewToContentY will remove the total height of the title bar. Add 2591 // the visible height back in to account for the fact that if the title 2592 // bar is partially visible, the part of the visible rect which is 2593 // displaying our content is displaced by that amount. 2594 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2595 r.right = viewToContentX(r.right); 2596 r.bottom = viewToContentY(r.bottom); 2597 } 2598 2599 // Sets r to be our visible rectangle in content coordinates. We use this 2600 // method on the native side to compute the position of the fixed layers. 2601 // Uses floating coordinates (necessary to correctly place elements when 2602 // the scale factor is not 1) 2603 private void calcOurContentVisibleRectF(RectF r) { 2604 Rect ri = new Rect(0,0,0,0); 2605 calcOurVisibleRect(ri); 2606 r.left = viewToContentXf(ri.left); 2607 // viewToContentY will remove the total height of the title bar. Add 2608 // the visible height back in to account for the fact that if the title 2609 // bar is partially visible, the part of the visible rect which is 2610 // displaying our content is displaced by that amount. 2611 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2612 r.right = viewToContentXf(ri.right); 2613 r.bottom = viewToContentYf(ri.bottom); 2614 } 2615 2616 static class ViewSizeData { 2617 int mWidth; 2618 int mHeight; 2619 float mHeightWidthRatio; 2620 int mActualViewHeight; 2621 int mTextWrapWidth; 2622 int mAnchorX; 2623 int mAnchorY; 2624 float mScale; 2625 boolean mIgnoreHeight; 2626 } 2627 2628 /** 2629 * Compute unzoomed width and height, and if they differ from the last 2630 * values we sent, send them to webkit (to be used as new viewport) 2631 * 2632 * @param force ensures that the message is sent to webkit even if the width 2633 * or height has not changed since the last message 2634 * 2635 * @return true if new values were sent 2636 */ 2637 boolean sendViewSizeZoom(boolean force) { 2638 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2639 2640 int viewWidth = getViewWidth(); 2641 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2642 // This height could be fixed and be different from actual visible height. 2643 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2644 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2645 // Make the ratio more accurate than (newHeight / newWidth), since the 2646 // latter both are calculated and rounded. 2647 float heightWidthRatio = (float) viewHeight / viewWidth; 2648 /* 2649 * Because the native side may have already done a layout before the 2650 * View system was able to measure us, we have to send a height of 0 to 2651 * remove excess whitespace when we grow our width. This will trigger a 2652 * layout and a change in content size. This content size change will 2653 * mean that contentSizeChanged will either call this method directly or 2654 * indirectly from onSizeChanged. 2655 */ 2656 if (newWidth > mLastWidthSent && mWrapContent) { 2657 newHeight = 0; 2658 heightWidthRatio = 0; 2659 } 2660 // Actual visible content height. 2661 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2662 // Avoid sending another message if the dimensions have not changed. 2663 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2664 actualViewHeight != mLastActualHeightSent) { 2665 ViewSizeData data = new ViewSizeData(); 2666 data.mWidth = newWidth; 2667 data.mHeight = newHeight; 2668 data.mHeightWidthRatio = heightWidthRatio; 2669 data.mActualViewHeight = actualViewHeight; 2670 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2671 data.mScale = mZoomManager.getScale(); 2672 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2673 && !mHeightCanMeasure; 2674 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2675 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2676 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2677 mLastWidthSent = newWidth; 2678 mLastHeightSent = newHeight; 2679 mLastActualHeightSent = actualViewHeight; 2680 mZoomManager.clearDocumentAnchor(); 2681 return true; 2682 } 2683 return false; 2684 } 2685 2686 private int computeRealHorizontalScrollRange() { 2687 if (mDrawHistory) { 2688 return mHistoryWidth; 2689 } else { 2690 // to avoid rounding error caused unnecessary scrollbar, use floor 2691 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2692 } 2693 } 2694 2695 @Override 2696 protected int computeHorizontalScrollRange() { 2697 int range = computeRealHorizontalScrollRange(); 2698 2699 // Adjust reported range if overscrolled to compress the scroll bars 2700 final int scrollX = mScrollX; 2701 final int overscrollRight = computeMaxScrollX(); 2702 if (scrollX < 0) { 2703 range -= scrollX; 2704 } else if (scrollX > overscrollRight) { 2705 range += scrollX - overscrollRight; 2706 } 2707 2708 return range; 2709 } 2710 2711 @Override 2712 protected int computeHorizontalScrollOffset() { 2713 return Math.max(mScrollX, 0); 2714 } 2715 2716 private int computeRealVerticalScrollRange() { 2717 if (mDrawHistory) { 2718 return mHistoryHeight; 2719 } else { 2720 // to avoid rounding error caused unnecessary scrollbar, use floor 2721 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2722 } 2723 } 2724 2725 @Override 2726 protected int computeVerticalScrollRange() { 2727 int range = computeRealVerticalScrollRange(); 2728 2729 // Adjust reported range if overscrolled to compress the scroll bars 2730 final int scrollY = mScrollY; 2731 final int overscrollBottom = computeMaxScrollY(); 2732 if (scrollY < 0) { 2733 range -= scrollY; 2734 } else if (scrollY > overscrollBottom) { 2735 range += scrollY - overscrollBottom; 2736 } 2737 2738 return range; 2739 } 2740 2741 @Override 2742 protected int computeVerticalScrollOffset() { 2743 return Math.max(mScrollY - getTitleHeight(), 0); 2744 } 2745 2746 @Override 2747 protected int computeVerticalScrollExtent() { 2748 return getViewHeight(); 2749 } 2750 2751 /** @hide */ 2752 @Override 2753 protected void onDrawVerticalScrollBar(Canvas canvas, 2754 Drawable scrollBar, 2755 int l, int t, int r, int b) { 2756 if (mScrollY < 0) { 2757 t -= mScrollY; 2758 } 2759 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2760 scrollBar.draw(canvas); 2761 } 2762 2763 @Override 2764 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2765 boolean clampedY) { 2766 // Special-case layer scrolling so that we do not trigger normal scroll 2767 // updating. 2768 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2769 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2770 mScrollingLayerRect.left = scrollX; 2771 mScrollingLayerRect.top = scrollY; 2772 invalidate(); 2773 return; 2774 } 2775 mInOverScrollMode = false; 2776 int maxX = computeMaxScrollX(); 2777 int maxY = computeMaxScrollY(); 2778 if (maxX == 0) { 2779 // do not over scroll x if the page just fits the screen 2780 scrollX = pinLocX(scrollX); 2781 } else if (scrollX < 0 || scrollX > maxX) { 2782 mInOverScrollMode = true; 2783 } 2784 if (scrollY < 0 || scrollY > maxY) { 2785 mInOverScrollMode = true; 2786 } 2787 2788 int oldX = mScrollX; 2789 int oldY = mScrollY; 2790 2791 super.scrollTo(scrollX, scrollY); 2792 2793 if (mOverScrollGlow != null) { 2794 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2795 } 2796 } 2797 2798 /** 2799 * Get the url for the current page. This is not always the same as the url 2800 * passed to WebViewClient.onPageStarted because although the load for 2801 * that url has begun, the current page may not have changed. 2802 * @return The url for the current page. 2803 */ 2804 public String getUrl() { 2805 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2806 return h != null ? h.getUrl() : null; 2807 } 2808 2809 /** 2810 * Get the original url for the current page. This is not always the same 2811 * as the url passed to WebViewClient.onPageStarted because although the 2812 * load for that url has begun, the current page may not have changed. 2813 * Also, there may have been redirects resulting in a different url to that 2814 * originally requested. 2815 * @return The url that was originally requested for the current page. 2816 */ 2817 public String getOriginalUrl() { 2818 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2819 return h != null ? h.getOriginalUrl() : null; 2820 } 2821 2822 /** 2823 * Get the title for the current page. This is the title of the current page 2824 * until WebViewClient.onReceivedTitle is called. 2825 * @return The title for the current page. 2826 */ 2827 public String getTitle() { 2828 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2829 return h != null ? h.getTitle() : null; 2830 } 2831 2832 /** 2833 * Get the favicon for the current page. This is the favicon of the current 2834 * page until WebViewClient.onReceivedIcon is called. 2835 * @return The favicon for the current page. 2836 */ 2837 public Bitmap getFavicon() { 2838 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2839 return h != null ? h.getFavicon() : null; 2840 } 2841 2842 /** 2843 * Get the touch icon url for the apple-touch-icon <link> element, or 2844 * a URL on this site's server pointing to the standard location of a 2845 * touch icon. 2846 * @hide 2847 */ 2848 public String getTouchIconUrl() { 2849 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2850 return h != null ? h.getTouchIconUrl() : null; 2851 } 2852 2853 /** 2854 * Get the progress for the current page. 2855 * @return The progress for the current page between 0 and 100. 2856 */ 2857 public int getProgress() { 2858 return mCallbackProxy.getProgress(); 2859 } 2860 2861 /** 2862 * @return the height of the HTML content. 2863 */ 2864 public int getContentHeight() { 2865 return mContentHeight; 2866 } 2867 2868 /** 2869 * @return the width of the HTML content. 2870 * @hide 2871 */ 2872 public int getContentWidth() { 2873 return mContentWidth; 2874 } 2875 2876 /** 2877 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2878 * is a global requests, not restricted to just this webview. This can be 2879 * useful if the application has been paused. 2880 */ 2881 public void pauseTimers() { 2882 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2883 } 2884 2885 /** 2886 * Resume all layout, parsing, and JavaScript timers for all webviews. 2887 * This will resume dispatching all timers. 2888 */ 2889 public void resumeTimers() { 2890 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2891 } 2892 2893 /** 2894 * Call this to pause any extra processing associated with this WebView and 2895 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2896 * is taken offscreen, this could be called to reduce unnecessary CPU or 2897 * network traffic. When the WebView is again "active", call onResume(). 2898 * 2899 * Note that this differs from pauseTimers(), which affects all WebViews. 2900 */ 2901 public void onPause() { 2902 if (!mIsPaused) { 2903 mIsPaused = true; 2904 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2905 // We want to pause the current playing video when switching out 2906 // from the current WebView/tab. 2907 if (mHTML5VideoViewProxy != null) { 2908 mHTML5VideoViewProxy.pauseAndDispatch(); 2909 } 2910 } 2911 } 2912 2913 /** 2914 * Call this to resume a WebView after a previous call to onPause(). 2915 */ 2916 public void onResume() { 2917 if (mIsPaused) { 2918 mIsPaused = false; 2919 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2920 } 2921 } 2922 2923 /** 2924 * Returns true if the view is paused, meaning onPause() was called. Calling 2925 * onResume() sets the paused state back to false. 2926 * @hide 2927 */ 2928 public boolean isPaused() { 2929 return mIsPaused; 2930 } 2931 2932 /** 2933 * Call this to inform the view that memory is low so that it can 2934 * free any available memory. 2935 */ 2936 public void freeMemory() { 2937 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2938 } 2939 2940 /** 2941 * Clear the resource cache. Note that the cache is per-application, so 2942 * this will clear the cache for all WebViews used. 2943 * 2944 * @param includeDiskFiles If false, only the RAM cache is cleared. 2945 */ 2946 public void clearCache(boolean includeDiskFiles) { 2947 // Note: this really needs to be a static method as it clears cache for all 2948 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2949 // we can't make this static. 2950 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2951 includeDiskFiles ? 1 : 0, 0); 2952 } 2953 2954 /** 2955 * Make sure that clearing the form data removes the adapter from the 2956 * currently focused textfield if there is one. 2957 */ 2958 public void clearFormData() { 2959 if (inEditingMode()) { 2960 AutoCompleteAdapter adapter = null; 2961 mWebTextView.setAdapterCustom(adapter); 2962 } 2963 } 2964 2965 /** 2966 * Tell the WebView to clear its internal back/forward list. 2967 */ 2968 public void clearHistory() { 2969 mCallbackProxy.getBackForwardList().setClearPending(); 2970 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2971 } 2972 2973 /** 2974 * Clear the SSL preferences table stored in response to proceeding with SSL 2975 * certificate errors. 2976 */ 2977 public void clearSslPreferences() { 2978 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2979 } 2980 2981 /** 2982 * Return the WebBackForwardList for this WebView. This contains the 2983 * back/forward list for use in querying each item in the history stack. 2984 * This is a copy of the private WebBackForwardList so it contains only a 2985 * snapshot of the current state. Multiple calls to this method may return 2986 * different objects. The object returned from this method will not be 2987 * updated to reflect any new state. 2988 */ 2989 public WebBackForwardList copyBackForwardList() { 2990 return mCallbackProxy.getBackForwardList().clone(); 2991 } 2992 2993 /* 2994 * Highlight and scroll to the next occurance of String in findAll. 2995 * Wraps the page infinitely, and scrolls. Must be called after 2996 * calling findAll. 2997 * 2998 * @param forward Direction to search. 2999 */ 3000 public void findNext(boolean forward) { 3001 if (0 == mNativeClass) return; // client isn't initialized 3002 nativeFindNext(forward); 3003 } 3004 3005 /* 3006 * Find all instances of find on the page and highlight them. 3007 * @param find String to find. 3008 * @return int The number of occurances of the String "find" 3009 * that were found. 3010 */ 3011 public int findAll(String find) { 3012 if (0 == mNativeClass) return 0; // client isn't initialized 3013 int result = find != null ? nativeFindAll(find.toLowerCase(), 3014 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3015 invalidate(); 3016 mLastFind = find; 3017 return result; 3018 } 3019 3020 /** 3021 * Start an ActionMode for finding text in this WebView. Only works if this 3022 * WebView is attached to the view system. 3023 * @param text If non-null, will be the initial text to search for. 3024 * Otherwise, the last String searched for in this WebView will 3025 * be used to start. 3026 * @param showIme If true, show the IME, assuming the user will begin typing. 3027 * If false and text is non-null, perform a find all. 3028 * @return boolean True if the find dialog is shown, false otherwise. 3029 */ 3030 public boolean showFindDialog(String text, boolean showIme) { 3031 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3032 if (getParent() == null || startActionMode(callback) == null) { 3033 // Could not start the action mode, so end Find on page 3034 return false; 3035 } 3036 mFindCallback = callback; 3037 setFindIsUp(true); 3038 mFindCallback.setWebView(this); 3039 if (showIme) { 3040 mFindCallback.showSoftInput(); 3041 } else if (text != null) { 3042 mFindCallback.setText(text); 3043 mFindCallback.findAll(); 3044 return true; 3045 } 3046 if (text == null) { 3047 text = mLastFind; 3048 } 3049 if (text != null) { 3050 mFindCallback.setText(text); 3051 } 3052 return true; 3053 } 3054 3055 /** 3056 * Keep track of the find callback so that we can remove its titlebar if 3057 * necessary. 3058 */ 3059 private FindActionModeCallback mFindCallback; 3060 3061 /** 3062 * Toggle whether the find dialog is showing, for both native and Java. 3063 */ 3064 private void setFindIsUp(boolean isUp) { 3065 mFindIsUp = isUp; 3066 if (0 == mNativeClass) return; // client isn't initialized 3067 nativeSetFindIsUp(isUp); 3068 } 3069 3070 /** 3071 * Return the index of the currently highlighted match. 3072 */ 3073 int findIndex() { 3074 if (0 == mNativeClass) return -1; 3075 return nativeFindIndex(); 3076 } 3077 3078 // Used to know whether the find dialog is open. Affects whether 3079 // or not we draw the highlights for matches. 3080 private boolean mFindIsUp; 3081 3082 // Keep track of the last string sent, so we can search again when find is 3083 // reopened. 3084 private String mLastFind; 3085 3086 /** 3087 * Return the first substring consisting of the address of a physical 3088 * location. Currently, only addresses in the United States are detected, 3089 * and consist of: 3090 * - a house number 3091 * - a street name 3092 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3093 * - a city name 3094 * - a state or territory, either spelled out or two-letter abbr. 3095 * - an optional 5 digit or 9 digit zip code. 3096 * 3097 * All names must be correctly capitalized, and the zip code, if present, 3098 * must be valid for the state. The street type must be a standard USPS 3099 * spelling or abbreviation. The state or territory must also be spelled 3100 * or abbreviated using USPS standards. The house number may not exceed 3101 * five digits. 3102 * @param addr The string to search for addresses. 3103 * 3104 * @return the address, or if no address is found, return null. 3105 */ 3106 public static String findAddress(String addr) { 3107 return findAddress(addr, false); 3108 } 3109 3110 /** 3111 * @hide 3112 * Return the first substring consisting of the address of a physical 3113 * location. Currently, only addresses in the United States are detected, 3114 * and consist of: 3115 * - a house number 3116 * - a street name 3117 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3118 * - a city name 3119 * - a state or territory, either spelled out or two-letter abbr. 3120 * - an optional 5 digit or 9 digit zip code. 3121 * 3122 * Names are optionally capitalized, and the zip code, if present, 3123 * must be valid for the state. The street type must be a standard USPS 3124 * spelling or abbreviation. The state or territory must also be spelled 3125 * or abbreviated using USPS standards. The house number may not exceed 3126 * five digits. 3127 * @param addr The string to search for addresses. 3128 * @param caseInsensitive addr Set to true to make search ignore case. 3129 * 3130 * @return the address, or if no address is found, return null. 3131 */ 3132 public static String findAddress(String addr, boolean caseInsensitive) { 3133 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3134 } 3135 3136 /* 3137 * Clear the highlighting surrounding text matches created by findAll. 3138 */ 3139 public void clearMatches() { 3140 if (mNativeClass == 0) 3141 return; 3142 nativeSetFindIsEmpty(); 3143 invalidate(); 3144 } 3145 3146 /** 3147 * Called when the find ActionMode ends. 3148 */ 3149 void notifyFindDialogDismissed() { 3150 mFindCallback = null; 3151 if (mWebViewCore == null) { 3152 return; 3153 } 3154 clearMatches(); 3155 setFindIsUp(false); 3156 // Now that the dialog has been removed, ensure that we scroll to a 3157 // location that is not beyond the end of the page. 3158 pinScrollTo(mScrollX, mScrollY, false, 0); 3159 invalidate(); 3160 } 3161 3162 /** 3163 * Query the document to see if it contains any image references. The 3164 * message object will be dispatched with arg1 being set to 1 if images 3165 * were found and 0 if the document does not reference any images. 3166 * @param response The message that will be dispatched with the result. 3167 */ 3168 public void documentHasImages(Message response) { 3169 if (response == null) { 3170 return; 3171 } 3172 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3173 } 3174 3175 /** 3176 * Request the scroller to abort any ongoing animation 3177 * 3178 * @hide 3179 */ 3180 public void stopScroll() { 3181 mScroller.forceFinished(true); 3182 mLastVelocity = 0; 3183 } 3184 3185 @Override 3186 public void computeScroll() { 3187 if (mScroller.computeScrollOffset()) { 3188 int oldX = mScrollX; 3189 int oldY = mScrollY; 3190 int x = mScroller.getCurrX(); 3191 int y = mScroller.getCurrY(); 3192 invalidate(); // So we draw again 3193 3194 if (!mScroller.isFinished()) { 3195 int rangeX = computeMaxScrollX(); 3196 int rangeY = computeMaxScrollY(); 3197 int overflingDistance = mOverflingDistance; 3198 3199 // Use the layer's scroll data if needed. 3200 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3201 oldX = mScrollingLayerRect.left; 3202 oldY = mScrollingLayerRect.top; 3203 rangeX = mScrollingLayerRect.right; 3204 rangeY = mScrollingLayerRect.bottom; 3205 // No overscrolling for layers. 3206 overflingDistance = 0; 3207 } 3208 3209 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3210 rangeX, rangeY, 3211 overflingDistance, overflingDistance, false); 3212 3213 if (mOverScrollGlow != null) { 3214 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3215 } 3216 } else { 3217 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3218 mScrollX = x; 3219 mScrollY = y; 3220 } else { 3221 // Update the layer position instead of WebView. 3222 nativeScrollLayer(mScrollingLayer, x, y); 3223 mScrollingLayerRect.left = x; 3224 mScrollingLayerRect.top = y; 3225 } 3226 abortAnimation(); 3227 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3228 WebViewCore.resumePriority(); 3229 if (!mSelectingText) { 3230 WebViewCore.resumeUpdatePicture(mWebViewCore); 3231 } 3232 if (oldX != mScrollX || oldY != mScrollY) { 3233 sendOurVisibleRect(); 3234 } 3235 } 3236 } else { 3237 super.computeScroll(); 3238 } 3239 } 3240 3241 private static int computeDuration(int dx, int dy) { 3242 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3243 int duration = distance * 1000 / STD_SPEED; 3244 return Math.min(duration, MAX_DURATION); 3245 } 3246 3247 // helper to pin the scrollBy parameters (already in view coordinates) 3248 // returns true if the scroll was changed 3249 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3250 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3251 } 3252 // helper to pin the scrollTo parameters (already in view coordinates) 3253 // returns true if the scroll was changed 3254 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3255 x = pinLocX(x); 3256 y = pinLocY(y); 3257 int dx = x - mScrollX; 3258 int dy = y - mScrollY; 3259 3260 if ((dx | dy) == 0) { 3261 return false; 3262 } 3263 abortAnimation(); 3264 if (animate) { 3265 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3266 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3267 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3268 awakenScrollBars(mScroller.getDuration()); 3269 invalidate(); 3270 } else { 3271 scrollTo(x, y); 3272 } 3273 return true; 3274 } 3275 3276 // Scale from content to view coordinates, and pin. 3277 // Also called by jni webview.cpp 3278 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3279 if (mDrawHistory) { 3280 // disallow WebView to change the scroll position as History Picture 3281 // is used in the view system. 3282 // TODO: as we switchOutDrawHistory when trackball or navigation 3283 // keys are hit, this should be safe. Right? 3284 return false; 3285 } 3286 cx = contentToViewDimension(cx); 3287 cy = contentToViewDimension(cy); 3288 if (mHeightCanMeasure) { 3289 // move our visible rect according to scroll request 3290 if (cy != 0) { 3291 Rect tempRect = new Rect(); 3292 calcOurVisibleRect(tempRect); 3293 tempRect.offset(cx, cy); 3294 requestRectangleOnScreen(tempRect); 3295 } 3296 // FIXME: We scroll horizontally no matter what because currently 3297 // ScrollView and ListView will not scroll horizontally. 3298 // FIXME: Why do we only scroll horizontally if there is no 3299 // vertical scroll? 3300// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3301 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3302 } else { 3303 return pinScrollBy(cx, cy, animate, 0); 3304 } 3305 } 3306 3307 /** 3308 * Called by CallbackProxy when the page starts loading. 3309 * @param url The URL of the page which has started loading. 3310 */ 3311 /* package */ void onPageStarted(String url) { 3312 // every time we start a new page, we want to reset the 3313 // WebView certificate: if the new site is secure, we 3314 // will reload it and get a new certificate set; 3315 // if the new site is not secure, the certificate must be 3316 // null, and that will be the case 3317 setCertificate(null); 3318 3319 // reset the flag since we set to true in if need after 3320 // loading is see onPageFinished(Url) 3321 mAccessibilityScriptInjected = false; 3322 } 3323 3324 /** 3325 * Called by CallbackProxy when the page finishes loading. 3326 * @param url The URL of the page which has finished loading. 3327 */ 3328 /* package */ void onPageFinished(String url) { 3329 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3330 // If the user is now on a different page, or has scrolled the page 3331 // past the point where the title bar is offscreen, ignore the 3332 // scroll request. 3333 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3334 && mScrollX == 0 && mScrollY == 0) { 3335 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3336 SLIDE_TITLE_DURATION); 3337 } 3338 mPageThatNeedsToSlideTitleBarOffScreen = null; 3339 } 3340 mZoomManager.onPageFinished(url); 3341 injectAccessibilityForUrl(url); 3342 } 3343 3344 /** 3345 * This method injects accessibility in the loaded document if accessibility 3346 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3347 * If no URL specific script is found or JavaScript is disabled we fallback to 3348 * the default {@link AccessibilityInjector} implementation. 3349 * </p> 3350 * If the URL has the "axs" paramter set to 1 it has already done the 3351 * script injection so we do nothing. If the parameter is set to 0 3352 * the URL opts out accessibility script injection so we fall back to 3353 * the default {@link AccessibilityInjector}. 3354 * </p> 3355 * Note: If the user has not opted-in the accessibility script injection no scripts 3356 * are injected rather the default {@link AccessibilityInjector} implementation 3357 * is used. 3358 * 3359 * @param url The URL loaded by this {@link WebView}. 3360 */ 3361 private void injectAccessibilityForUrl(String url) { 3362 if (mWebViewCore == null) { 3363 return; 3364 } 3365 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3366 3367 if (!accessibilityManager.isEnabled()) { 3368 // it is possible that accessibility was turned off between reloads 3369 ensureAccessibilityScriptInjectorInstance(false); 3370 return; 3371 } 3372 3373 if (!getSettings().getJavaScriptEnabled()) { 3374 // no JS so we fallback to the basic buil-in support 3375 ensureAccessibilityScriptInjectorInstance(true); 3376 return; 3377 } 3378 3379 // check the URL "axs" parameter to choose appropriate action 3380 int axsParameterValue = getAxsUrlParameterValue(url); 3381 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3382 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3383 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3384 if (onDeviceScriptInjectionEnabled) { 3385 ensureAccessibilityScriptInjectorInstance(false); 3386 // neither script injected nor script injection opted out => we inject 3387 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3388 // TODO: Set this flag after successfull script injection. Maybe upon injection 3389 // the chooser should update the meta tag and we check it to declare success 3390 mAccessibilityScriptInjected = true; 3391 } else { 3392 // injection disabled so we fallback to the basic built-in support 3393 ensureAccessibilityScriptInjectorInstance(true); 3394 } 3395 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3396 // injection opted out so we fallback to the basic buil-in support 3397 ensureAccessibilityScriptInjectorInstance(true); 3398 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3399 ensureAccessibilityScriptInjectorInstance(false); 3400 // the URL provides accessibility but we still need to add our generic script 3401 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3402 } else { 3403 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3404 } 3405 } 3406 3407 /** 3408 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3409 * 3410 * @param present True to ensure an insance, false to ensure no instance. 3411 */ 3412 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3413 if (present) { 3414 if (mAccessibilityInjector == null) { 3415 mAccessibilityInjector = new AccessibilityInjector(this); 3416 } 3417 } else { 3418 mAccessibilityInjector = null; 3419 } 3420 } 3421 3422 /** 3423 * Gets the "axs" URL parameter value. 3424 * 3425 * @param url A url to fetch the paramter from. 3426 * @return The parameter value if such, -1 otherwise. 3427 */ 3428 private int getAxsUrlParameterValue(String url) { 3429 if (mMatchAxsUrlParameterPattern == null) { 3430 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3431 } 3432 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3433 if (matcher.find()) { 3434 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3435 return Integer.parseInt(keyValuePair.split("=")[1]); 3436 } 3437 return -1; 3438 } 3439 3440 /** 3441 * The URL of a page that sent a message to scroll the title bar off screen. 3442 * 3443 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3444 * title bar off the screen. Sometimes, the scroll position is set before 3445 * the page finishes loading. Rather than scrolling while the page is still 3446 * loading, keep track of the URL and new scroll position so we can perform 3447 * the scroll once the page finishes loading. 3448 */ 3449 private String mPageThatNeedsToSlideTitleBarOffScreen; 3450 3451 /** 3452 * The destination Y scroll position to be used when the page finishes 3453 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3454 */ 3455 private int mYDistanceToSlideTitleOffScreen; 3456 3457 // scale from content to view coordinates, and pin 3458 // return true if pin caused the final x/y different than the request cx/cy, 3459 // and a future scroll may reach the request cx/cy after our size has 3460 // changed 3461 // return false if the view scroll to the exact position as it is requested, 3462 // where negative numbers are taken to mean 0 3463 private boolean setContentScrollTo(int cx, int cy) { 3464 if (mDrawHistory) { 3465 // disallow WebView to change the scroll position as History Picture 3466 // is used in the view system. 3467 // One known case where this is called is that WebCore tries to 3468 // restore the scroll position. As history Picture already uses the 3469 // saved scroll position, it is ok to skip this. 3470 return false; 3471 } 3472 int vx; 3473 int vy; 3474 if ((cx | cy) == 0) { 3475 // If the page is being scrolled to (0,0), do not add in the title 3476 // bar's height, and simply scroll to (0,0). (The only other work 3477 // in contentToView_ is to multiply, so this would not change 0.) 3478 vx = 0; 3479 vy = 0; 3480 } else { 3481 vx = contentToViewX(cx); 3482 vy = contentToViewY(cy); 3483 } 3484// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3485// vx + " " + vy + "]"); 3486 // Some mobile sites attempt to scroll the title bar off the page by 3487 // scrolling to (0,1). If we are at the top left corner of the 3488 // page, assume this is an attempt to scroll off the title bar, and 3489 // animate the title bar off screen slowly enough that the user can see 3490 // it. 3491 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3492 && mTitleBar != null) { 3493 // FIXME: 100 should be defined somewhere as our max progress. 3494 if (getProgress() < 100) { 3495 // Wait to scroll the title bar off screen until the page has 3496 // finished loading. Keep track of the URL and the destination 3497 // Y position 3498 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3499 mYDistanceToSlideTitleOffScreen = vy; 3500 } else { 3501 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3502 } 3503 // Since we are animating, we have not yet reached the desired 3504 // scroll position. Do not return true to request another attempt 3505 return false; 3506 } 3507 pinScrollTo(vx, vy, false, 0); 3508 // If the request was to scroll to a negative coordinate, treat it as if 3509 // it was a request to scroll to 0 3510 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3511 return true; 3512 } else { 3513 return false; 3514 } 3515 } 3516 3517 // scale from content to view coordinates, and pin 3518 private void spawnContentScrollTo(int cx, int cy) { 3519 if (mDrawHistory) { 3520 // disallow WebView to change the scroll position as History Picture 3521 // is used in the view system. 3522 return; 3523 } 3524 int vx = contentToViewX(cx); 3525 int vy = contentToViewY(cy); 3526 pinScrollTo(vx, vy, true, 0); 3527 } 3528 3529 /** 3530 * These are from webkit, and are in content coordinate system (unzoomed) 3531 */ 3532 private void contentSizeChanged(boolean updateLayout) { 3533 // suppress 0,0 since we usually see real dimensions soon after 3534 // this avoids drawing the prev content in a funny place. If we find a 3535 // way to consolidate these notifications, this check may become 3536 // obsolete 3537 if ((mContentWidth | mContentHeight) == 0) { 3538 return; 3539 } 3540 3541 if (mHeightCanMeasure) { 3542 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3543 || updateLayout) { 3544 requestLayout(); 3545 } 3546 } else if (mWidthCanMeasure) { 3547 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3548 || updateLayout) { 3549 requestLayout(); 3550 } 3551 } else { 3552 // If we don't request a layout, try to send our view size to the 3553 // native side to ensure that WebCore has the correct dimensions. 3554 sendViewSizeZoom(false); 3555 } 3556 } 3557 3558 /** 3559 * Set the WebViewClient that will receive various notifications and 3560 * requests. This will replace the current handler. 3561 * @param client An implementation of WebViewClient. 3562 */ 3563 public void setWebViewClient(WebViewClient client) { 3564 mCallbackProxy.setWebViewClient(client); 3565 } 3566 3567 /** 3568 * Gets the WebViewClient 3569 * @return the current WebViewClient instance. 3570 * 3571 *@hide pending API council approval. 3572 */ 3573 public WebViewClient getWebViewClient() { 3574 return mCallbackProxy.getWebViewClient(); 3575 } 3576 3577 /** 3578 * Register the interface to be used when content can not be handled by 3579 * the rendering engine, and should be downloaded instead. This will replace 3580 * the current handler. 3581 * @param listener An implementation of DownloadListener. 3582 */ 3583 public void setDownloadListener(DownloadListener listener) { 3584 mCallbackProxy.setDownloadListener(listener); 3585 } 3586 3587 /** 3588 * Set the chrome handler. This is an implementation of WebChromeClient for 3589 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3590 * This will replace the current handler. 3591 * @param client An implementation of WebChromeClient. 3592 */ 3593 public void setWebChromeClient(WebChromeClient client) { 3594 mCallbackProxy.setWebChromeClient(client); 3595 } 3596 3597 /** 3598 * Gets the chrome handler. 3599 * @return the current WebChromeClient instance. 3600 * 3601 * @hide API council approval. 3602 */ 3603 public WebChromeClient getWebChromeClient() { 3604 return mCallbackProxy.getWebChromeClient(); 3605 } 3606 3607 /** 3608 * Set the back/forward list client. This is an implementation of 3609 * WebBackForwardListClient for handling new items and changes in the 3610 * history index. 3611 * @param client An implementation of WebBackForwardListClient. 3612 * {@hide} 3613 */ 3614 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3615 mCallbackProxy.setWebBackForwardListClient(client); 3616 } 3617 3618 /** 3619 * Gets the WebBackForwardListClient. 3620 * {@hide} 3621 */ 3622 public WebBackForwardListClient getWebBackForwardListClient() { 3623 return mCallbackProxy.getWebBackForwardListClient(); 3624 } 3625 3626 /** 3627 * Set the Picture listener. This is an interface used to receive 3628 * notifications of a new Picture. 3629 * @param listener An implementation of WebView.PictureListener. 3630 */ 3631 public void setPictureListener(PictureListener listener) { 3632 mPictureListener = listener; 3633 } 3634 3635 /** 3636 * {@hide} 3637 */ 3638 /* FIXME: Debug only! Remove for SDK! */ 3639 public void externalRepresentation(Message callback) { 3640 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3641 } 3642 3643 /** 3644 * {@hide} 3645 */ 3646 /* FIXME: Debug only! Remove for SDK! */ 3647 public void documentAsText(Message callback) { 3648 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3649 } 3650 3651 /** 3652 * Use this function to bind an object to JavaScript so that the 3653 * methods can be accessed from JavaScript. 3654 * <p><strong>IMPORTANT:</strong> 3655 * <ul> 3656 * <li> Using addJavascriptInterface() allows JavaScript to control your 3657 * application. This can be a very useful feature or a dangerous security 3658 * issue. When the HTML in the WebView is untrustworthy (for example, part 3659 * or all of the HTML is provided by some person or process), then an 3660 * attacker could inject HTML that will execute your code and possibly any 3661 * code of the attacker's choosing.<br> 3662 * Do not use addJavascriptInterface() unless all of the HTML in this 3663 * WebView was written by you.</li> 3664 * <li> The Java object that is bound runs in another thread and not in 3665 * the thread that it was constructed in.</li> 3666 * </ul></p> 3667 * @param obj The class instance to bind to JavaScript, null instances are 3668 * ignored. 3669 * @param interfaceName The name to used to expose the instance in 3670 * JavaScript. 3671 */ 3672 public void addJavascriptInterface(Object obj, String interfaceName) { 3673 if (obj == null) { 3674 return; 3675 } 3676 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3677 arg.mObject = obj; 3678 arg.mInterfaceName = interfaceName; 3679 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3680 } 3681 3682 /** 3683 * Removes a previously added JavaScript interface with the given name. 3684 * @param interfaceName The name of the interface to remove. 3685 */ 3686 public void removeJavascriptInterface(String interfaceName) { 3687 if (mWebViewCore != null) { 3688 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3689 arg.mInterfaceName = interfaceName; 3690 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3691 } 3692 } 3693 3694 /** 3695 * Return the WebSettings object used to control the settings for this 3696 * WebView. 3697 * @return A WebSettings object that can be used to control this WebView's 3698 * settings. 3699 */ 3700 public WebSettings getSettings() { 3701 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3702 } 3703 3704 /** 3705 * Return the list of currently loaded plugins. 3706 * @return The list of currently loaded plugins. 3707 * 3708 * @hide 3709 * @deprecated This was used for Gears, which has been deprecated. 3710 */ 3711 @Deprecated 3712 public static synchronized PluginList getPluginList() { 3713 return new PluginList(); 3714 } 3715 3716 /** 3717 * @hide 3718 * @deprecated This was used for Gears, which has been deprecated. 3719 */ 3720 @Deprecated 3721 public void refreshPlugins(boolean reloadOpenPages) { } 3722 3723 //------------------------------------------------------------------------- 3724 // Override View methods 3725 //------------------------------------------------------------------------- 3726 3727 @Override 3728 protected void finalize() throws Throwable { 3729 try { 3730 destroy(); 3731 } finally { 3732 super.finalize(); 3733 } 3734 } 3735 3736 @Override 3737 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3738 if (child == mTitleBar) { 3739 // When drawing the title bar, move it horizontally to always show 3740 // at the top of the WebView. 3741 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3742 int newTop = 0; 3743 if (mTitleGravity == Gravity.NO_GRAVITY) { 3744 newTop = Math.min(0, mScrollY); 3745 } else if (mTitleGravity == Gravity.TOP) { 3746 newTop = mScrollY; 3747 } 3748 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3749 mTitleBar.setTop(newTop); 3750 } 3751 return super.drawChild(canvas, child, drawingTime); 3752 } 3753 3754 private void drawContent(Canvas canvas) { 3755 // Update the buttons in the picture, so when we draw the picture 3756 // to the screen, they are in the correct state. 3757 // Tell the native side if user is a) touching the screen, 3758 // b) pressing the trackball down, or c) pressing the enter key 3759 // If the cursor is on a button, we need to draw it in the pressed 3760 // state. 3761 // If mNativeClass is 0, we should not reach here, so we do not 3762 // need to check it again. 3763 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3764 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3765 || mTrackballDown || mGotCenterDown, false); 3766 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3767 } 3768 3769 /** 3770 * Draw the background when beyond bounds 3771 * @param canvas Canvas to draw into 3772 */ 3773 private void drawOverScrollBackground(Canvas canvas) { 3774 if (mOverScrollBackground == null) { 3775 mOverScrollBackground = new Paint(); 3776 Bitmap bm = BitmapFactory.decodeResource( 3777 mContext.getResources(), 3778 com.android.internal.R.drawable.status_bar_background); 3779 mOverScrollBackground.setShader(new BitmapShader(bm, 3780 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3781 mOverScrollBorder = new Paint(); 3782 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3783 mOverScrollBorder.setStrokeWidth(0); 3784 mOverScrollBorder.setColor(0xffbbbbbb); 3785 } 3786 3787 int top = 0; 3788 int right = computeRealHorizontalScrollRange(); 3789 int bottom = top + computeRealVerticalScrollRange(); 3790 // first draw the background and anchor to the top of the view 3791 canvas.save(); 3792 canvas.translate(mScrollX, mScrollY); 3793 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3794 - mScrollY, Region.Op.DIFFERENCE); 3795 canvas.drawPaint(mOverScrollBackground); 3796 canvas.restore(); 3797 // then draw the border 3798 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3799 // next clip the region for the content 3800 canvas.clipRect(0, top, right, bottom); 3801 } 3802 3803 @Override 3804 protected void onDraw(Canvas canvas) { 3805 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3806 if (mNativeClass == 0) { 3807 return; 3808 } 3809 3810 // if both mContentWidth and mContentHeight are 0, it means there is no 3811 // valid Picture passed to WebView yet. This can happen when WebView 3812 // just starts. Draw the background and return. 3813 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3814 canvas.drawColor(mBackgroundColor); 3815 return; 3816 } 3817 3818 if (canvas.isHardwareAccelerated()) { 3819 mZoomManager.setHardwareAccelerated(); 3820 } 3821 3822 int saveCount = canvas.save(); 3823 if (mInOverScrollMode && !getSettings() 3824 .getUseWebViewBackgroundForOverscrollBackground()) { 3825 drawOverScrollBackground(canvas); 3826 } 3827 if (mTitleBar != null) { 3828 canvas.translate(0, getTitleHeight()); 3829 } 3830 drawContent(canvas); 3831 canvas.restoreToCount(saveCount); 3832 3833 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3834 invalidate(); 3835 } 3836 if (inEditingMode()) { 3837 mWebTextView.onDrawSubstitute(); 3838 } 3839 mWebViewCore.signalRepaintDone(); 3840 3841 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3842 invalidate(); 3843 } 3844 3845 // paint the highlight in the end 3846 if (!mTouchHighlightRegion.isEmpty()) { 3847 if (mTouchHightlightPaint == null) { 3848 mTouchHightlightPaint = new Paint(); 3849 mTouchHightlightPaint.setColor(mHightlightColor); 3850 mTouchHightlightPaint.setAntiAlias(true); 3851 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3852 TOUCH_HIGHLIGHT_ARC)); 3853 } 3854 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3855 mTouchHightlightPaint); 3856 } 3857 if (DEBUG_TOUCH_HIGHLIGHT) { 3858 if (getSettings().getNavDump()) { 3859 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3860 if (mTouchCrossHairColor == null) { 3861 mTouchCrossHairColor = new Paint(); 3862 mTouchCrossHairColor.setColor(Color.RED); 3863 } 3864 canvas.drawLine(mTouchHighlightX - mNavSlop, 3865 mTouchHighlightY - mNavSlop, mTouchHighlightX 3866 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3867 + 1, mTouchCrossHairColor); 3868 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3869 mTouchHighlightY - mNavSlop, mTouchHighlightX 3870 - mNavSlop, 3871 mTouchHighlightY + mNavSlop + 1, 3872 mTouchCrossHairColor); 3873 } 3874 } 3875 } 3876 } 3877 3878 private void removeTouchHighlight(boolean removePendingMessage) { 3879 if (removePendingMessage) { 3880 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3881 } 3882 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3883 } 3884 3885 @Override 3886 public void setLayoutParams(ViewGroup.LayoutParams params) { 3887 if (params.height == LayoutParams.WRAP_CONTENT) { 3888 mWrapContent = true; 3889 } 3890 super.setLayoutParams(params); 3891 } 3892 3893 @Override 3894 public boolean performLongClick() { 3895 // performLongClick() is the result of a delayed message. If we switch 3896 // to windows overview, the WebView will be temporarily removed from the 3897 // view system. In that case, do nothing. 3898 if (getParent() == null) return false; 3899 3900 // A multi-finger gesture can look like a long press; make sure we don't take 3901 // long press actions if we're scaling. 3902 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3903 if (detector != null && detector.isInProgress()) { 3904 return false; 3905 } 3906 3907 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3908 // Send the click so that the textfield is in focus 3909 centerKeyPressOnTextField(); 3910 rebuildWebTextView(); 3911 } else { 3912 clearTextEntry(); 3913 } 3914 if (inEditingMode()) { 3915 // Since we just called rebuildWebTextView, the layout is not set 3916 // properly. Update it so it can correctly find the word to select. 3917 mWebTextView.ensureLayout(); 3918 // Provide a touch down event to WebTextView, which will allow it 3919 // to store the location to use in performLongClick. 3920 AbsoluteLayout.LayoutParams params 3921 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3922 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3923 mLastTouchTime, MotionEvent.ACTION_DOWN, 3924 mLastTouchX - params.x + mScrollX, 3925 mLastTouchY - params.y + mScrollY, 0); 3926 mWebTextView.dispatchTouchEvent(fake); 3927 return mWebTextView.performLongClick(); 3928 } 3929 if (mSelectingText) return false; // long click does nothing on selection 3930 /* if long click brings up a context menu, the super function 3931 * returns true and we're done. Otherwise, nothing happened when 3932 * the user clicked. */ 3933 if (super.performLongClick()) { 3934 return true; 3935 } 3936 /* In the case where the application hasn't already handled the long 3937 * click action, look for a word under the click. If one is found, 3938 * animate the text selection into view. 3939 * FIXME: no animation code yet */ 3940 return selectText(); 3941 } 3942 3943 /** 3944 * Select the word at the last click point. 3945 * 3946 * @hide pending API council approval 3947 */ 3948 public boolean selectText() { 3949 int x = viewToContentX(mLastTouchX + mScrollX); 3950 int y = viewToContentY(mLastTouchY + mScrollY); 3951 return selectText(x, y); 3952 } 3953 3954 /** 3955 * Select the word at the indicated content coordinates. 3956 */ 3957 boolean selectText(int x, int y) { 3958 if (!setUpSelect(true, x, y)) { 3959 return false; 3960 } 3961 nativeSetExtendSelection(); 3962 mDrawSelectionPointer = false; 3963 mSelectionStarted = true; 3964 mTouchMode = TOUCH_DRAG_MODE; 3965 return true; 3966 } 3967 3968 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3969 3970 @Override 3971 protected void onConfigurationChanged(Configuration newConfig) { 3972 if (mSelectingText && mOrientation != newConfig.orientation) { 3973 selectionDone(); 3974 } 3975 mOrientation = newConfig.orientation; 3976 } 3977 3978 /** 3979 * Keep track of the Callback so we can end its ActionMode or remove its 3980 * titlebar. 3981 */ 3982 private SelectActionModeCallback mSelectCallback; 3983 3984 // These values are possible options for didUpdateWebTextViewDimensions. 3985 private static final int FULLY_ON_SCREEN = 0; 3986 private static final int INTERSECTS_SCREEN = 1; 3987 private static final int ANYWHERE = 2; 3988 3989 /** 3990 * Check to see if the focused textfield/textarea is still on screen. If it 3991 * is, update the the dimensions and location of WebTextView. Otherwise, 3992 * remove the WebTextView. Should be called when the zoom level changes. 3993 * @param intersection How to determine whether the textfield/textarea is 3994 * still on screen. 3995 * @return boolean True if the textfield/textarea is still on screen and the 3996 * dimensions/location of WebTextView have been updated. 3997 */ 3998 private boolean didUpdateWebTextViewDimensions(int intersection) { 3999 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4000 Rect vBox = contentToViewRect(contentBounds); 4001 Rect visibleRect = new Rect(); 4002 calcOurVisibleRect(visibleRect); 4003 // If the textfield is on screen, place the WebTextView in 4004 // its new place, accounting for our new scroll/zoom values, 4005 // and adjust its textsize. 4006 boolean onScreen; 4007 switch (intersection) { 4008 case FULLY_ON_SCREEN: 4009 onScreen = visibleRect.contains(vBox); 4010 break; 4011 case INTERSECTS_SCREEN: 4012 onScreen = Rect.intersects(visibleRect, vBox); 4013 break; 4014 case ANYWHERE: 4015 onScreen = true; 4016 break; 4017 default: 4018 throw new AssertionError( 4019 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4020 } 4021 if (onScreen) { 4022 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4023 vBox.height()); 4024 mWebTextView.updateTextSize(); 4025 updateWebTextViewPadding(); 4026 return true; 4027 } else { 4028 // The textfield is now off screen. The user probably 4029 // was not zooming to see the textfield better. Remove 4030 // the WebTextView. If the user types a key, and the 4031 // textfield is still in focus, we will reconstruct 4032 // the WebTextView and scroll it back on screen. 4033 mWebTextView.remove(); 4034 return false; 4035 } 4036 } 4037 4038 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4039 boolean isPictureAfterFirstLayout) { 4040 if (mNativeClass == 0) 4041 return; 4042 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4043 isPictureAfterFirstLayout); 4044 if (mHTML5VideoViewProxy != null) { 4045 mHTML5VideoViewProxy.setBaseLayer(layer); 4046 } 4047 } 4048 4049 private void onZoomAnimationStart() { 4050 // If it is in password mode, turn it off so it does not draw misplaced. 4051 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4052 mWebTextView.setInPassword(false); 4053 } 4054 } 4055 4056 private void onZoomAnimationEnd() { 4057 // adjust the edit text view if needed 4058 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4059 && nativeFocusCandidateIsPassword()) { 4060 // If it is a password field, start drawing the WebTextView once 4061 // again. 4062 mWebTextView.setInPassword(true); 4063 } 4064 } 4065 4066 void onFixedLengthZoomAnimationStart() { 4067 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4068 onZoomAnimationStart(); 4069 } 4070 4071 void onFixedLengthZoomAnimationEnd() { 4072 if (!mSelectingText) { 4073 WebViewCore.resumeUpdatePicture(mWebViewCore); 4074 } 4075 onZoomAnimationEnd(); 4076 } 4077 4078 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4079 Paint.DITHER_FLAG | 4080 Paint.SUBPIXEL_TEXT_FLAG; 4081 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4082 Paint.DITHER_FLAG; 4083 4084 private final DrawFilter mZoomFilter = 4085 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4086 // If we need to trade better quality for speed, set mScrollFilter to null 4087 private final DrawFilter mScrollFilter = 4088 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4089 4090 private void drawCoreAndCursorRing(Canvas canvas, int color, 4091 boolean drawCursorRing) { 4092 if (mDrawHistory) { 4093 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4094 canvas.drawPicture(mHistoryPicture); 4095 return; 4096 } 4097 if (mNativeClass == 0) return; 4098 4099 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4100 boolean animateScroll = ((!mScroller.isFinished() 4101 || mVelocityTracker != null) 4102 && (mTouchMode != TOUCH_DRAG_MODE || 4103 mHeldMotionless != MOTIONLESS_TRUE)) 4104 || mDeferTouchMode == TOUCH_DRAG_MODE; 4105 if (mTouchMode == TOUCH_DRAG_MODE) { 4106 if (mHeldMotionless == MOTIONLESS_PENDING) { 4107 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4108 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4109 mHeldMotionless = MOTIONLESS_FALSE; 4110 } 4111 if (mHeldMotionless == MOTIONLESS_FALSE) { 4112 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4113 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4114 mHeldMotionless = MOTIONLESS_PENDING; 4115 } 4116 } 4117 if (animateZoom) { 4118 mZoomManager.animateZoom(canvas); 4119 } else if (!canvas.isHardwareAccelerated()) { 4120 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4121 } 4122 4123 boolean UIAnimationsRunning = false; 4124 // Currently for each draw we compute the animation values; 4125 // We may in the future decide to do that independently. 4126 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4127 UIAnimationsRunning = true; 4128 // If we have unfinished (or unstarted) animations, 4129 // we ask for a repaint. We only need to do this in software 4130 // rendering (with hardware rendering we already have a different 4131 // method of requesting a repaint) 4132 if (!canvas.isHardwareAccelerated()) 4133 invalidate(); 4134 } 4135 4136 // decide which adornments to draw 4137 int extras = DRAW_EXTRAS_NONE; 4138 if (mFindIsUp) { 4139 extras = DRAW_EXTRAS_FIND; 4140 } else if (mSelectingText) { 4141 extras = DRAW_EXTRAS_SELECTION; 4142 nativeSetSelectionPointer(mDrawSelectionPointer, 4143 mZoomManager.getInvScale(), 4144 mSelectX, mSelectY - getTitleHeight()); 4145 } else if (drawCursorRing) { 4146 extras = DRAW_EXTRAS_CURSOR_RING; 4147 } 4148 if (DebugFlags.WEB_VIEW) { 4149 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4150 + " mSelectingText=" + mSelectingText 4151 + " nativePageShouldHandleShiftAndArrows()=" 4152 + nativePageShouldHandleShiftAndArrows() 4153 + " animateZoom=" + animateZoom 4154 + " extras=" + extras); 4155 } 4156 4157 if (canvas.isHardwareAccelerated()) { 4158 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4159 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4160 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4161 } else { 4162 DrawFilter df = null; 4163 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4164 df = mZoomFilter; 4165 } else if (animateScroll) { 4166 df = mScrollFilter; 4167 } 4168 canvas.setDrawFilter(df); 4169 // XXX: Revisit splitting content. Right now it causes a 4170 // synchronization problem with layers. 4171 int content = nativeDraw(canvas, color, extras, false); 4172 canvas.setDrawFilter(null); 4173 if (content != 0) { 4174 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4175 } 4176 } 4177 4178 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4179 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4180 mTouchMode = TOUCH_SHORTPRESS_MODE; 4181 } 4182 } 4183 if (mFocusSizeChanged) { 4184 mFocusSizeChanged = false; 4185 // If we are zooming, this will get handled above, when the zoom 4186 // finishes. We also do not need to do this unless the WebTextView 4187 // is showing. 4188 if (!animateZoom && inEditingMode()) { 4189 didUpdateWebTextViewDimensions(ANYWHERE); 4190 } 4191 } 4192 } 4193 4194 // draw history 4195 private boolean mDrawHistory = false; 4196 private Picture mHistoryPicture = null; 4197 private int mHistoryWidth = 0; 4198 private int mHistoryHeight = 0; 4199 4200 // Only check the flag, can be called from WebCore thread 4201 boolean drawHistory() { 4202 return mDrawHistory; 4203 } 4204 4205 int getHistoryPictureWidth() { 4206 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4207 } 4208 4209 // Should only be called in UI thread 4210 void switchOutDrawHistory() { 4211 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4212 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4213 mDrawHistory = false; 4214 mHistoryPicture = null; 4215 invalidate(); 4216 int oldScrollX = mScrollX; 4217 int oldScrollY = mScrollY; 4218 mScrollX = pinLocX(mScrollX); 4219 mScrollY = pinLocY(mScrollY); 4220 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4221 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4222 } else { 4223 sendOurVisibleRect(); 4224 } 4225 } 4226 } 4227 4228 WebViewCore.CursorData cursorData() { 4229 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4230 result.mMoveGeneration = nativeMoveGeneration(); 4231 result.mFrame = nativeCursorFramePointer(); 4232 Point position = nativeCursorPosition(); 4233 result.mX = position.x; 4234 result.mY = position.y; 4235 return result; 4236 } 4237 4238 /** 4239 * Delete text from start to end in the focused textfield. If there is no 4240 * focus, or if start == end, silently fail. If start and end are out of 4241 * order, swap them. 4242 * @param start Beginning of selection to delete. 4243 * @param end End of selection to delete. 4244 */ 4245 /* package */ void deleteSelection(int start, int end) { 4246 mTextGeneration++; 4247 WebViewCore.TextSelectionData data 4248 = new WebViewCore.TextSelectionData(start, end); 4249 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4250 data); 4251 } 4252 4253 /** 4254 * Set the selection to (start, end) in the focused textfield. If start and 4255 * end are out of order, swap them. 4256 * @param start Beginning of selection. 4257 * @param end End of selection. 4258 */ 4259 /* package */ void setSelection(int start, int end) { 4260 if (mWebViewCore != null) { 4261 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4262 } 4263 } 4264 4265 @Override 4266 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4267 InputConnection connection = super.onCreateInputConnection(outAttrs); 4268 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4269 return connection; 4270 } 4271 4272 /** 4273 * Called in response to a message from webkit telling us that the soft 4274 * keyboard should be launched. 4275 */ 4276 private void displaySoftKeyboard(boolean isTextView) { 4277 InputMethodManager imm = (InputMethodManager) 4278 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4279 4280 // bring it back to the default level scale so that user can enter text 4281 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4282 if (zoom) { 4283 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4284 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4285 } 4286 if (isTextView) { 4287 rebuildWebTextView(); 4288 if (inEditingMode()) { 4289 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4290 if (zoom) { 4291 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4292 } 4293 return; 4294 } 4295 } 4296 // Used by plugins and contentEditable. 4297 // Also used if the navigation cache is out of date, and 4298 // does not recognize that a textfield is in focus. In that 4299 // case, use WebView as the targeted view. 4300 // see http://b/issue?id=2457459 4301 imm.showSoftInput(this, 0); 4302 } 4303 4304 // Called by WebKit to instruct the UI to hide the keyboard 4305 private void hideSoftKeyboard() { 4306 InputMethodManager imm = InputMethodManager.peekInstance(); 4307 if (imm != null && (imm.isActive(this) 4308 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4309 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4310 } 4311 } 4312 4313 /* 4314 * This method checks the current focus and cursor and potentially rebuilds 4315 * mWebTextView to have the appropriate properties, such as password, 4316 * multiline, and what text it contains. It also removes it if necessary. 4317 */ 4318 /* package */ void rebuildWebTextView() { 4319 // If the WebView does not have focus, do nothing until it gains focus. 4320 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4321 return; 4322 } 4323 boolean alreadyThere = inEditingMode(); 4324 // inEditingMode can only return true if mWebTextView is non-null, 4325 // so we can safely call remove() if (alreadyThere) 4326 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4327 if (alreadyThere) { 4328 mWebTextView.remove(); 4329 } 4330 return; 4331 } 4332 // At this point, we know we have found an input field, so go ahead 4333 // and create the WebTextView if necessary. 4334 if (mWebTextView == null) { 4335 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4336 // Initialize our generation number. 4337 mTextGeneration = 0; 4338 } 4339 mWebTextView.updateTextSize(); 4340 Rect visibleRect = new Rect(); 4341 calcOurContentVisibleRect(visibleRect); 4342 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4343 // should be in content coordinates. 4344 Rect bounds = nativeFocusCandidateNodeBounds(); 4345 Rect vBox = contentToViewRect(bounds); 4346 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4347 if (!Rect.intersects(bounds, visibleRect)) { 4348 revealSelection(); 4349 } 4350 String text = nativeFocusCandidateText(); 4351 int nodePointer = nativeFocusCandidatePointer(); 4352 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4353 // It is possible that we have the same textfield, but it has moved, 4354 // i.e. In the case of opening/closing the screen. 4355 // In that case, we need to set the dimensions, but not the other 4356 // aspects. 4357 // If the text has been changed by webkit, update it. However, if 4358 // there has been more UI text input, ignore it. We will receive 4359 // another update when that text is recognized. 4360 if (text != null && !text.equals(mWebTextView.getText().toString()) 4361 && nativeTextGeneration() == mTextGeneration) { 4362 mWebTextView.setTextAndKeepSelection(text); 4363 } 4364 } else { 4365 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4366 Gravity.RIGHT : Gravity.NO_GRAVITY); 4367 // This needs to be called before setType, which may call 4368 // requestFormData, and it needs to have the correct nodePointer. 4369 mWebTextView.setNodePointer(nodePointer); 4370 mWebTextView.setType(nativeFocusCandidateType()); 4371 updateWebTextViewPadding(); 4372 if (null == text) { 4373 if (DebugFlags.WEB_VIEW) { 4374 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4375 } 4376 text = ""; 4377 } 4378 mWebTextView.setTextAndKeepSelection(text); 4379 InputMethodManager imm = InputMethodManager.peekInstance(); 4380 if (imm != null && imm.isActive(mWebTextView)) { 4381 imm.restartInput(mWebTextView); 4382 } 4383 } 4384 if (isFocused()) { 4385 mWebTextView.requestFocus(); 4386 } 4387 } 4388 4389 /** 4390 * Update the padding of mWebTextView based on the native textfield/textarea 4391 */ 4392 void updateWebTextViewPadding() { 4393 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4394 if (paddingRect != null) { 4395 // Use contentToViewDimension since these are the dimensions of 4396 // the padding. 4397 mWebTextView.setPadding( 4398 contentToViewDimension(paddingRect.left), 4399 contentToViewDimension(paddingRect.top), 4400 contentToViewDimension(paddingRect.right), 4401 contentToViewDimension(paddingRect.bottom)); 4402 } 4403 } 4404 4405 /** 4406 * Tell webkit to put the cursor on screen. 4407 */ 4408 /* package */ void revealSelection() { 4409 if (mWebViewCore != null) { 4410 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4411 } 4412 } 4413 4414 /** 4415 * Called by WebTextView to find saved form data associated with the 4416 * textfield 4417 * @param name Name of the textfield. 4418 * @param nodePointer Pointer to the node of the textfield, so it can be 4419 * compared to the currently focused textfield when the data is 4420 * retrieved. 4421 * @param autoFillable true if WebKit has determined this field is part of 4422 * a form that can be auto filled. 4423 * @param autoComplete true if the attribute "autocomplete" is set to true 4424 * on the textfield. 4425 */ 4426 /* package */ void requestFormData(String name, int nodePointer, 4427 boolean autoFillable, boolean autoComplete) { 4428 if (mWebViewCore.getSettings().getSaveFormData()) { 4429 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4430 update.arg1 = nodePointer; 4431 RequestFormData updater = new RequestFormData(name, getUrl(), 4432 update, autoFillable, autoComplete); 4433 Thread t = new Thread(updater); 4434 t.start(); 4435 } 4436 } 4437 4438 /** 4439 * Pass a message to find out the <label> associated with the <input> 4440 * identified by nodePointer 4441 * @param framePointer Pointer to the frame containing the <input> node 4442 * @param nodePointer Pointer to the node for which a <label> is desired. 4443 */ 4444 /* package */ void requestLabel(int framePointer, int nodePointer) { 4445 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4446 nodePointer); 4447 } 4448 4449 /* 4450 * This class requests an Adapter for the WebTextView which shows past 4451 * entries stored in the database. It is a Runnable so that it can be done 4452 * in its own thread, without slowing down the UI. 4453 */ 4454 private class RequestFormData implements Runnable { 4455 private String mName; 4456 private String mUrl; 4457 private Message mUpdateMessage; 4458 private boolean mAutoFillable; 4459 private boolean mAutoComplete; 4460 4461 public RequestFormData(String name, String url, Message msg, 4462 boolean autoFillable, boolean autoComplete) { 4463 mName = name; 4464 mUrl = url; 4465 mUpdateMessage = msg; 4466 mAutoFillable = autoFillable; 4467 mAutoComplete = autoComplete; 4468 } 4469 4470 public void run() { 4471 ArrayList<String> pastEntries = new ArrayList<String>(); 4472 4473 if (mAutoFillable) { 4474 // Note that code inside the adapter click handler in WebTextView depends 4475 // on the AutoFill item being at the top of the drop down list. If you change 4476 // the order, make sure to do it there too! 4477 WebSettings settings = getSettings(); 4478 if (settings != null && settings.getAutoFillProfile() != null) { 4479 pastEntries.add(getResources().getText( 4480 com.android.internal.R.string.autofill_this_form).toString() + 4481 " " + 4482 mAutoFillData.getPreviewString()); 4483 mWebTextView.setAutoFillProfileIsSet(true); 4484 } else { 4485 // There is no autofill profile set up yet, so add an option that 4486 // will invite the user to set their profile up. 4487 pastEntries.add(getResources().getText( 4488 com.android.internal.R.string.setup_autofill).toString()); 4489 mWebTextView.setAutoFillProfileIsSet(false); 4490 } 4491 } 4492 4493 if (mAutoComplete) { 4494 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4495 } 4496 4497 if (pastEntries.size() > 0) { 4498 AutoCompleteAdapter adapter = new 4499 AutoCompleteAdapter(mContext, pastEntries); 4500 mUpdateMessage.obj = adapter; 4501 mUpdateMessage.sendToTarget(); 4502 } 4503 } 4504 } 4505 4506 /** 4507 * Dump the display tree to "/sdcard/displayTree.txt" 4508 * 4509 * @hide debug only 4510 */ 4511 public void dumpDisplayTree() { 4512 nativeDumpDisplayTree(getUrl()); 4513 } 4514 4515 /** 4516 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4517 * "/sdcard/domTree.txt" 4518 * 4519 * @hide debug only 4520 */ 4521 public void dumpDomTree(boolean toFile) { 4522 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4523 } 4524 4525 /** 4526 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4527 * to "/sdcard/renderTree.txt" 4528 * 4529 * @hide debug only 4530 */ 4531 public void dumpRenderTree(boolean toFile) { 4532 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4533 } 4534 4535 /** 4536 * Called by DRT on UI thread, need to proxy to WebCore thread. 4537 * 4538 * @hide debug only 4539 */ 4540 public void useMockDeviceOrientation() { 4541 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4542 } 4543 4544 /** 4545 * Called by DRT on WebCore thread. 4546 * 4547 * @hide debug only 4548 */ 4549 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4550 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4551 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4552 canProvideGamma, gamma); 4553 } 4554 4555 /** 4556 * Dump the V8 counters to standard output. 4557 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4558 * true. Otherwise, this will do nothing. 4559 * 4560 * @hide debug only 4561 */ 4562 public void dumpV8Counters() { 4563 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4564 } 4565 4566 // This is used to determine long press with the center key. Does not 4567 // affect long press with the trackball/touch. 4568 private boolean mGotCenterDown = false; 4569 4570 @Override 4571 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4572 // send complex characters to webkit for use by JS and plugins 4573 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4574 // pass the key to DOM 4575 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4576 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4577 // return true as DOM handles the key 4578 return true; 4579 } 4580 return false; 4581 } 4582 4583 private boolean isEnterActionKey(int keyCode) { 4584 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4585 || keyCode == KeyEvent.KEYCODE_ENTER 4586 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4587 } 4588 4589 @Override 4590 public boolean onKeyDown(int keyCode, KeyEvent event) { 4591 if (DebugFlags.WEB_VIEW) { 4592 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4593 + "keyCode=" + keyCode 4594 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4595 } 4596 4597 // don't implement accelerator keys here; defer to host application 4598 if (event.isCtrlPressed()) { 4599 return false; 4600 } 4601 4602 if (mNativeClass == 0) { 4603 return false; 4604 } 4605 4606 // do this hack up front, so it always works, regardless of touch-mode 4607 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4608 mAutoRedraw = !mAutoRedraw; 4609 if (mAutoRedraw) { 4610 invalidate(); 4611 } 4612 return true; 4613 } 4614 4615 // Bubble up the key event if 4616 // 1. it is a system key; or 4617 // 2. the host application wants to handle it; 4618 if (event.isSystem() 4619 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4620 return false; 4621 } 4622 4623 // accessibility support 4624 if (accessibilityScriptInjected()) { 4625 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4626 // if an accessibility script is injected we delegate to it the key handling. 4627 // this script is a screen reader which is a fully fledged solution for blind 4628 // users to navigate in and interact with web pages. 4629 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4630 return true; 4631 } else { 4632 // Clean up if accessibility was disabled after loading the current URL. 4633 mAccessibilityScriptInjected = false; 4634 } 4635 } else if (mAccessibilityInjector != null) { 4636 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4637 if (mAccessibilityInjector.onKeyEvent(event)) { 4638 // if an accessibility injector is present (no JavaScript enabled or the site 4639 // opts out injecting our JavaScript screen reader) we let it decide whether 4640 // to act on and consume the event. 4641 return true; 4642 } 4643 } else { 4644 // Clean up if accessibility was disabled after loading the current URL. 4645 mAccessibilityInjector = null; 4646 } 4647 } 4648 4649 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4650 if (event.hasNoModifiers()) { 4651 pageUp(false); 4652 return true; 4653 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4654 pageUp(true); 4655 return true; 4656 } 4657 } 4658 4659 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4660 if (event.hasNoModifiers()) { 4661 pageDown(false); 4662 return true; 4663 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4664 pageDown(true); 4665 return true; 4666 } 4667 } 4668 4669 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4670 pageUp(true); 4671 return true; 4672 } 4673 4674 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4675 pageDown(true); 4676 return true; 4677 } 4678 4679 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4680 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4681 switchOutDrawHistory(); 4682 if (nativePageShouldHandleShiftAndArrows()) { 4683 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4684 return true; 4685 } 4686 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4687 switch (keyCode) { 4688 case KeyEvent.KEYCODE_DPAD_UP: 4689 pageUp(true); 4690 return true; 4691 case KeyEvent.KEYCODE_DPAD_DOWN: 4692 pageDown(true); 4693 return true; 4694 case KeyEvent.KEYCODE_DPAD_LEFT: 4695 nativeClearCursor(); // start next trackball movement from page edge 4696 return pinScrollTo(0, mScrollY, true, 0); 4697 case KeyEvent.KEYCODE_DPAD_RIGHT: 4698 nativeClearCursor(); // start next trackball movement from page edge 4699 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4700 } 4701 } 4702 if (mSelectingText) { 4703 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4704 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4705 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4706 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4707 int multiplier = event.getRepeatCount() + 1; 4708 moveSelection(xRate * multiplier, yRate * multiplier); 4709 return true; 4710 } 4711 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4712 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4713 return true; 4714 } 4715 // Bubble up the key event as WebView doesn't handle it 4716 return false; 4717 } 4718 4719 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4720 switchOutDrawHistory(); 4721 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4722 || nativeCursorWantsKeyEvents(); 4723 if (event.getRepeatCount() == 0) { 4724 if (mSelectingText) { 4725 return true; // discard press if copy in progress 4726 } 4727 mGotCenterDown = true; 4728 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4729 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4730 // Already checked mNativeClass, so we do not need to check it 4731 // again. 4732 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4733 if (!wantsKeyEvents) return true; 4734 } 4735 // Bubble up the key event as WebView doesn't handle it 4736 if (!wantsKeyEvents) return false; 4737 } 4738 4739 if (getSettings().getNavDump()) { 4740 switch (keyCode) { 4741 case KeyEvent.KEYCODE_4: 4742 dumpDisplayTree(); 4743 break; 4744 case KeyEvent.KEYCODE_5: 4745 case KeyEvent.KEYCODE_6: 4746 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4747 break; 4748 case KeyEvent.KEYCODE_7: 4749 case KeyEvent.KEYCODE_8: 4750 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4751 break; 4752 case KeyEvent.KEYCODE_9: 4753 nativeInstrumentReport(); 4754 return true; 4755 } 4756 } 4757 4758 if (nativeCursorIsTextInput()) { 4759 // This message will put the node in focus, for the DOM's notion 4760 // of focus. 4761 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4762 nativeCursorNodePointer()); 4763 // This will bring up the WebTextView and put it in focus, for 4764 // our view system's notion of focus 4765 rebuildWebTextView(); 4766 // Now we need to pass the event to it 4767 if (inEditingMode()) { 4768 mWebTextView.setDefaultSelection(); 4769 return mWebTextView.dispatchKeyEvent(event); 4770 } 4771 } else if (nativeHasFocusNode()) { 4772 // In this case, the cursor is not on a text input, but the focus 4773 // might be. Check it, and if so, hand over to the WebTextView. 4774 rebuildWebTextView(); 4775 if (inEditingMode()) { 4776 mWebTextView.setDefaultSelection(); 4777 return mWebTextView.dispatchKeyEvent(event); 4778 } 4779 } 4780 4781 // TODO: should we pass all the keys to DOM or check the meta tag 4782 if (nativeCursorWantsKeyEvents() || true) { 4783 // pass the key to DOM 4784 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4785 // return true as DOM handles the key 4786 return true; 4787 } 4788 4789 // Bubble up the key event as WebView doesn't handle it 4790 return false; 4791 } 4792 4793 @Override 4794 public boolean onKeyUp(int keyCode, KeyEvent event) { 4795 if (DebugFlags.WEB_VIEW) { 4796 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4797 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4798 } 4799 4800 if (mNativeClass == 0) { 4801 return false; 4802 } 4803 4804 // special CALL handling when cursor node's href is "tel:XXX" 4805 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4806 String text = nativeCursorText(); 4807 if (!nativeCursorIsTextInput() && text != null 4808 && text.startsWith(SCHEME_TEL)) { 4809 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4810 getContext().startActivity(intent); 4811 return true; 4812 } 4813 } 4814 4815 // Bubble up the key event if 4816 // 1. it is a system key; or 4817 // 2. the host application wants to handle it; 4818 if (event.isSystem() 4819 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4820 return false; 4821 } 4822 4823 // accessibility support 4824 if (accessibilityScriptInjected()) { 4825 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4826 // if an accessibility script is injected we delegate to it the key handling. 4827 // this script is a screen reader which is a fully fledged solution for blind 4828 // users to navigate in and interact with web pages. 4829 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4830 return true; 4831 } else { 4832 // Clean up if accessibility was disabled after loading the current URL. 4833 mAccessibilityScriptInjected = false; 4834 } 4835 } else if (mAccessibilityInjector != null) { 4836 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4837 if (mAccessibilityInjector.onKeyEvent(event)) { 4838 // if an accessibility injector is present (no JavaScript enabled or the site 4839 // opts out injecting our JavaScript screen reader) we let it decide whether to 4840 // act on and consume the event. 4841 return true; 4842 } 4843 } else { 4844 // Clean up if accessibility was disabled after loading the current URL. 4845 mAccessibilityInjector = null; 4846 } 4847 } 4848 4849 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4850 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4851 if (nativePageShouldHandleShiftAndArrows()) { 4852 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4853 return true; 4854 } 4855 // always handle the navigation keys in the UI thread 4856 // Bubble up the key event as WebView doesn't handle it 4857 return false; 4858 } 4859 4860 if (isEnterActionKey(keyCode)) { 4861 // remove the long press message first 4862 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4863 mGotCenterDown = false; 4864 4865 if (mSelectingText) { 4866 if (mExtendSelection) { 4867 copySelection(); 4868 selectionDone(); 4869 } else { 4870 mExtendSelection = true; 4871 nativeSetExtendSelection(); 4872 invalidate(); // draw the i-beam instead of the arrow 4873 } 4874 return true; // discard press if copy in progress 4875 } 4876 4877 // perform the single click 4878 Rect visibleRect = sendOurVisibleRect(); 4879 // Note that sendOurVisibleRect calls viewToContent, so the 4880 // coordinates should be in content coordinates. 4881 if (!nativeCursorIntersects(visibleRect)) { 4882 return false; 4883 } 4884 WebViewCore.CursorData data = cursorData(); 4885 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4886 playSoundEffect(SoundEffectConstants.CLICK); 4887 if (nativeCursorIsTextInput()) { 4888 rebuildWebTextView(); 4889 centerKeyPressOnTextField(); 4890 if (inEditingMode()) { 4891 mWebTextView.setDefaultSelection(); 4892 } 4893 return true; 4894 } 4895 clearTextEntry(); 4896 nativeShowCursorTimed(); 4897 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4898 return true; 4899 } 4900 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4901 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4902 nativeCursorNodePointer()); 4903 return true; 4904 } 4905 } 4906 4907 // TODO: should we pass all the keys to DOM or check the meta tag 4908 if (nativeCursorWantsKeyEvents() || true) { 4909 // pass the key to DOM 4910 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4911 // return true as DOM handles the key 4912 return true; 4913 } 4914 4915 // Bubble up the key event as WebView doesn't handle it 4916 return false; 4917 } 4918 4919 /* 4920 * Enter selecting text mode, and see if CAB should be shown. 4921 * Returns true if the WebView is now in 4922 * selecting text mode (including if it was already in that mode, and this 4923 * method did nothing). 4924 */ 4925 private boolean setUpSelect(boolean selectWord, int x, int y) { 4926 if (0 == mNativeClass) return false; // client isn't initialized 4927 if (inFullScreenMode()) return false; 4928 if (mSelectingText) return true; 4929 nativeResetSelection(); 4930 if (selectWord && !nativeWordSelection(x, y)) { 4931 selectionDone(); 4932 return false; 4933 } 4934 mSelectCallback = new SelectActionModeCallback(); 4935 mSelectCallback.setWebView(this); 4936 if (startActionMode(mSelectCallback) == null) { 4937 // There is no ActionMode, so do not allow the user to modify a 4938 // selection. 4939 selectionDone(); 4940 return false; 4941 } 4942 mExtendSelection = false; 4943 mSelectingText = mDrawSelectionPointer = true; 4944 // don't let the picture change during text selection 4945 WebViewCore.pauseUpdatePicture(mWebViewCore); 4946 if (nativeHasCursorNode()) { 4947 Rect rect = nativeCursorNodeBounds(); 4948 mSelectX = contentToViewX(rect.left); 4949 mSelectY = contentToViewY(rect.top); 4950 } else if (mLastTouchY > getVisibleTitleHeight()) { 4951 mSelectX = mScrollX + mLastTouchX; 4952 mSelectY = mScrollY + mLastTouchY; 4953 } else { 4954 mSelectX = mScrollX + getViewWidth() / 2; 4955 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4956 } 4957 nativeHideCursor(); 4958 mMinAutoScrollX = 0; 4959 mMaxAutoScrollX = getViewWidth(); 4960 mMinAutoScrollY = 0; 4961 mMaxAutoScrollY = getViewHeightWithTitle(); 4962 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4963 viewToContentY(mSelectY), mScrollingLayerRect, 4964 mScrollingLayerBounds); 4965 if (mScrollingLayer != 0) { 4966 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4967 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4968 contentToViewX(mScrollingLayerBounds.left)); 4969 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4970 contentToViewX(mScrollingLayerBounds.right)); 4971 } 4972 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4973 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4974 contentToViewY(mScrollingLayerBounds.top)); 4975 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4976 contentToViewY(mScrollingLayerBounds.bottom)); 4977 } 4978 } 4979 mMinAutoScrollX += SELECT_SCROLL; 4980 mMaxAutoScrollX -= SELECT_SCROLL; 4981 mMinAutoScrollY += SELECT_SCROLL; 4982 mMaxAutoScrollY -= SELECT_SCROLL; 4983 return true; 4984 } 4985 4986 /** 4987 * Use this method to put the WebView into text selection mode. 4988 * Do not rely on this functionality; it will be deprecated in the future. 4989 */ 4990 public void emulateShiftHeld() { 4991 setUpSelect(false, 0, 0); 4992 } 4993 4994 /** 4995 * Select all of the text in this WebView. 4996 * 4997 * @hide pending API council approval. 4998 */ 4999 public void selectAll() { 5000 if (0 == mNativeClass) return; // client isn't initialized 5001 if (inFullScreenMode()) return; 5002 if (!mSelectingText) { 5003 // retrieve a point somewhere within the text 5004 Point select = nativeSelectableText(); 5005 if (!selectText(select.x, select.y)) return; 5006 } 5007 nativeSelectAll(); 5008 mDrawSelectionPointer = false; 5009 mExtendSelection = true; 5010 invalidate(); 5011 } 5012 5013 /** 5014 * Called when the selection has been removed. 5015 */ 5016 void selectionDone() { 5017 if (mSelectingText) { 5018 mSelectingText = false; 5019 // finish is idempotent, so this is fine even if selectionDone was 5020 // called by mSelectCallback.onDestroyActionMode 5021 mSelectCallback.finish(); 5022 mSelectCallback = null; 5023 WebViewCore.resumePriority(); 5024 WebViewCore.resumeUpdatePicture(mWebViewCore); 5025 invalidate(); // redraw without selection 5026 mAutoScrollX = 0; 5027 mAutoScrollY = 0; 5028 mSentAutoScrollMessage = false; 5029 } 5030 } 5031 5032 /** 5033 * Copy the selection to the clipboard 5034 * 5035 * @hide pending API council approval. 5036 */ 5037 public boolean copySelection() { 5038 boolean copiedSomething = false; 5039 String selection = getSelection(); 5040 if (selection != null && selection != "") { 5041 if (DebugFlags.WEB_VIEW) { 5042 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5043 } 5044 Toast.makeText(mContext 5045 , com.android.internal.R.string.text_copied 5046 , Toast.LENGTH_SHORT).show(); 5047 copiedSomething = true; 5048 ClipboardManager cm = (ClipboardManager)getContext() 5049 .getSystemService(Context.CLIPBOARD_SERVICE); 5050 cm.setText(selection); 5051 } 5052 invalidate(); // remove selection region and pointer 5053 return copiedSomething; 5054 } 5055 5056 /** 5057 * @hide pending API Council approval. 5058 */ 5059 public SearchBox getSearchBox() { 5060 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5061 return null; 5062 } 5063 return mWebViewCore.getBrowserFrame().getSearchBox(); 5064 } 5065 5066 /** 5067 * Returns the currently highlighted text as a string. 5068 */ 5069 String getSelection() { 5070 if (mNativeClass == 0) return ""; 5071 return nativeGetSelection(); 5072 } 5073 5074 @Override 5075 protected void onAttachedToWindow() { 5076 super.onAttachedToWindow(); 5077 if (hasWindowFocus()) setActive(true); 5078 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5079 if (mGlobalLayoutListener == null) { 5080 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5081 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5082 } 5083 if (mScrollChangedListener == null) { 5084 mScrollChangedListener = new InnerScrollChangedListener(); 5085 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5086 } 5087 5088 addAccessibilityApisToJavaScript(); 5089 5090 mTouchEventQueue.reset(); 5091 } 5092 5093 @Override 5094 protected void onDetachedFromWindow() { 5095 clearHelpers(); 5096 mZoomManager.dismissZoomPicker(); 5097 if (hasWindowFocus()) setActive(false); 5098 5099 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5100 if (mGlobalLayoutListener != null) { 5101 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5102 mGlobalLayoutListener = null; 5103 } 5104 if (mScrollChangedListener != null) { 5105 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5106 mScrollChangedListener = null; 5107 } 5108 5109 removeAccessibilityApisFromJavaScript(); 5110 5111 super.onDetachedFromWindow(); 5112 } 5113 5114 @Override 5115 protected void onVisibilityChanged(View changedView, int visibility) { 5116 super.onVisibilityChanged(changedView, visibility); 5117 // The zoomManager may be null if the webview is created from XML that 5118 // specifies the view's visibility param as not visible (see http://b/2794841) 5119 if (visibility != View.VISIBLE && mZoomManager != null) { 5120 mZoomManager.dismissZoomPicker(); 5121 } 5122 } 5123 5124 /** 5125 * @deprecated WebView no longer needs to implement 5126 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5127 */ 5128 @Deprecated 5129 public void onChildViewAdded(View parent, View child) {} 5130 5131 /** 5132 * @deprecated WebView no longer needs to implement 5133 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5134 */ 5135 @Deprecated 5136 public void onChildViewRemoved(View p, View child) {} 5137 5138 /** 5139 * @deprecated WebView should not have implemented 5140 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5141 */ 5142 @Deprecated 5143 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5144 } 5145 5146 void setActive(boolean active) { 5147 if (active) { 5148 if (hasFocus()) { 5149 // If our window regained focus, and we have focus, then begin 5150 // drawing the cursor ring 5151 mDrawCursorRing = true; 5152 setFocusControllerActive(true); 5153 if (mNativeClass != 0) { 5154 nativeRecordButtons(true, false, true); 5155 } 5156 } else { 5157 if (!inEditingMode()) { 5158 // If our window gained focus, but we do not have it, do not 5159 // draw the cursor ring. 5160 mDrawCursorRing = false; 5161 setFocusControllerActive(false); 5162 } 5163 // We do not call nativeRecordButtons here because we assume 5164 // that when we lost focus, or window focus, it got called with 5165 // false for the first parameter 5166 } 5167 } else { 5168 if (!mZoomManager.isZoomPickerVisible()) { 5169 /* 5170 * The external zoom controls come in their own window, so our 5171 * window loses focus. Our policy is to not draw the cursor ring 5172 * if our window is not focused, but this is an exception since 5173 * the user can still navigate the web page with the zoom 5174 * controls showing. 5175 */ 5176 mDrawCursorRing = false; 5177 } 5178 mKeysPressed.clear(); 5179 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5180 mTouchMode = TOUCH_DONE_MODE; 5181 if (mNativeClass != 0) { 5182 nativeRecordButtons(false, false, true); 5183 } 5184 setFocusControllerActive(false); 5185 } 5186 invalidate(); 5187 } 5188 5189 // To avoid drawing the cursor ring, and remove the TextView when our window 5190 // loses focus. 5191 @Override 5192 public void onWindowFocusChanged(boolean hasWindowFocus) { 5193 setActive(hasWindowFocus); 5194 if (hasWindowFocus) { 5195 JWebCoreJavaBridge.setActiveWebView(this); 5196 } else { 5197 JWebCoreJavaBridge.removeActiveWebView(this); 5198 } 5199 super.onWindowFocusChanged(hasWindowFocus); 5200 } 5201 5202 /* 5203 * Pass a message to WebCore Thread, telling the WebCore::Page's 5204 * FocusController to be "inactive" so that it will 5205 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5206 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5207 */ 5208 /* package */ void setFocusControllerActive(boolean active) { 5209 if (mWebViewCore == null) return; 5210 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5211 // Need to send this message after the document regains focus. 5212 if (active && mListBoxMessage != null) { 5213 mWebViewCore.sendMessage(mListBoxMessage); 5214 mListBoxMessage = null; 5215 } 5216 } 5217 5218 @Override 5219 protected void onFocusChanged(boolean focused, int direction, 5220 Rect previouslyFocusedRect) { 5221 if (DebugFlags.WEB_VIEW) { 5222 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5223 } 5224 if (focused) { 5225 // When we regain focus, if we have window focus, resume drawing 5226 // the cursor ring 5227 if (hasWindowFocus()) { 5228 mDrawCursorRing = true; 5229 if (mNativeClass != 0) { 5230 nativeRecordButtons(true, false, true); 5231 } 5232 setFocusControllerActive(true); 5233 //} else { 5234 // The WebView has gained focus while we do not have 5235 // windowfocus. When our window lost focus, we should have 5236 // called nativeRecordButtons(false...) 5237 } 5238 } else { 5239 // When we lost focus, unless focus went to the TextView (which is 5240 // true if we are in editing mode), stop drawing the cursor ring. 5241 if (!inEditingMode()) { 5242 mDrawCursorRing = false; 5243 if (mNativeClass != 0) { 5244 nativeRecordButtons(false, false, true); 5245 } 5246 setFocusControllerActive(false); 5247 } 5248 mKeysPressed.clear(); 5249 } 5250 5251 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5252 } 5253 5254 void setGLRectViewport() { 5255 // Use the getGlobalVisibleRect() to get the intersection among the parents 5256 // visible == false means we're clipped - send a null rect down to indicate that 5257 // we should not draw 5258 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5259 if (visible) { 5260 // Then need to invert the Y axis, just for GL 5261 View rootView = getRootView(); 5262 int rootViewHeight = rootView.getHeight(); 5263 mViewRectViewport.set(mGLRectViewport); 5264 int savedWebViewBottom = mGLRectViewport.bottom; 5265 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5266 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5267 mGLViewportEmpty = false; 5268 } else { 5269 mGLViewportEmpty = true; 5270 } 5271 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5272 mGLViewportEmpty ? null : mViewRectViewport); 5273 } 5274 5275 /** 5276 * @hide 5277 */ 5278 @Override 5279 protected boolean setFrame(int left, int top, int right, int bottom) { 5280 boolean changed = super.setFrame(left, top, right, bottom); 5281 if (!changed && mHeightCanMeasure) { 5282 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5283 // in WebViewCore after we get the first layout. We do call 5284 // requestLayout() when we get contentSizeChanged(). But the View 5285 // system won't call onSizeChanged if the dimension is not changed. 5286 // In this case, we need to call sendViewSizeZoom() explicitly to 5287 // notify the WebKit about the new dimensions. 5288 sendViewSizeZoom(false); 5289 } 5290 setGLRectViewport(); 5291 return changed; 5292 } 5293 5294 @Override 5295 protected void onSizeChanged(int w, int h, int ow, int oh) { 5296 super.onSizeChanged(w, h, ow, oh); 5297 5298 // adjust the max viewport width depending on the view dimensions. This 5299 // is to ensure the scaling is not going insane. So do not shrink it if 5300 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5301 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5302 if (newMaxViewportWidth > sMaxViewportWidth) { 5303 sMaxViewportWidth = newMaxViewportWidth; 5304 } 5305 5306 mZoomManager.onSizeChanged(w, h, ow, oh); 5307 } 5308 5309 @Override 5310 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5311 super.onScrollChanged(l, t, oldl, oldt); 5312 if (!mInOverScrollMode) { 5313 sendOurVisibleRect(); 5314 // update WebKit if visible title bar height changed. The logic is same 5315 // as getVisibleTitleHeight. 5316 int titleHeight = getTitleHeight(); 5317 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5318 sendViewSizeZoom(false); 5319 } 5320 } 5321 } 5322 5323 @Override 5324 public boolean dispatchKeyEvent(KeyEvent event) { 5325 switch (event.getAction()) { 5326 case KeyEvent.ACTION_DOWN: 5327 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5328 break; 5329 case KeyEvent.ACTION_MULTIPLE: 5330 // Always accept the action. 5331 break; 5332 case KeyEvent.ACTION_UP: 5333 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5334 if (location == -1) { 5335 // We did not receive the key down for this key, so do not 5336 // handle the key up. 5337 return false; 5338 } else { 5339 // We did receive the key down. Handle the key up, and 5340 // remove it from our pressed keys. 5341 mKeysPressed.remove(location); 5342 } 5343 break; 5344 default: 5345 // Accept the action. This should not happen, unless a new 5346 // action is added to KeyEvent. 5347 break; 5348 } 5349 if (inEditingMode() && mWebTextView.isFocused()) { 5350 // Ensure that the WebTextView gets the event, even if it does 5351 // not currently have a bounds. 5352 return mWebTextView.dispatchKeyEvent(event); 5353 } else { 5354 return super.dispatchKeyEvent(event); 5355 } 5356 } 5357 5358 // Here are the snap align logic: 5359 // 1. If it starts nearly horizontally or vertically, snap align; 5360 // 2. If there is a dramitic direction change, let it go; 5361 // 3. If there is a same direction back and forth, lock it. 5362 5363 // adjustable parameters 5364 private int mMinLockSnapReverseDistance; 5365 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5366 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5367 5368 private boolean hitFocusedPlugin(int contentX, int contentY) { 5369 if (DebugFlags.WEB_VIEW) { 5370 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5371 Rect r = nativeFocusNodeBounds(); 5372 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5373 + ", " + r.right + ", " + r.bottom + ")"); 5374 } 5375 return nativeFocusIsPlugin() 5376 && nativeFocusNodeBounds().contains(contentX, contentY); 5377 } 5378 5379 private boolean shouldForwardTouchEvent() { 5380 return mFullScreenHolder != null || (mForwardTouchEvents 5381 && !mSelectingText 5382 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5383 && mPreventDefault != PREVENT_DEFAULT_NO); 5384 } 5385 5386 private boolean inFullScreenMode() { 5387 return mFullScreenHolder != null; 5388 } 5389 5390 private void dismissFullScreenMode() { 5391 if (inFullScreenMode()) { 5392 mFullScreenHolder.dismiss(); 5393 mFullScreenHolder = null; 5394 } 5395 } 5396 5397 void onPinchToZoomAnimationStart() { 5398 // cancel the single touch handling 5399 cancelTouch(); 5400 onZoomAnimationStart(); 5401 } 5402 5403 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5404 onZoomAnimationEnd(); 5405 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5406 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5407 // as it may trigger the unwanted fling. 5408 mTouchMode = TOUCH_PINCH_DRAG; 5409 mConfirmMove = true; 5410 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5411 } 5412 5413 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5414 // layer is found. 5415 private void startScrollingLayer(float x, float y) { 5416 int contentX = viewToContentX((int) x + mScrollX); 5417 int contentY = viewToContentY((int) y + mScrollY); 5418 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5419 mScrollingLayerRect, mScrollingLayerBounds); 5420 if (mScrollingLayer != 0) { 5421 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5422 } 5423 } 5424 5425 // 1/(density * density) used to compute the distance between points. 5426 // Computed in init(). 5427 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5428 5429 // The distance between two points reported in onTouchEvent scaled by the 5430 // density of the screen. 5431 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5432 5433 @Override 5434 public boolean onTouchEvent(MotionEvent ev) { 5435 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5436 return false; 5437 } 5438 5439 if (DebugFlags.WEB_VIEW) { 5440 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5441 + " mTouchMode=" + mTouchMode 5442 + " numPointers=" + ev.getPointerCount()); 5443 } 5444 5445 // If WebKit wasn't interested in this multitouch gesture, enqueue 5446 // the event for handling directly rather than making the round trip 5447 // to WebKit and back. 5448 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5449 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5450 } else { 5451 mTouchEventQueue.enqueueTouchEvent(ev); 5452 } 5453 5454 // Since all events are handled asynchronously, we always want the gesture stream. 5455 return true; 5456 } 5457 5458 /* 5459 * Common code for single touch and multi-touch. 5460 * (x, y) denotes current focus point, which is the touch point for single touch 5461 * and the middle point for multi-touch. 5462 */ 5463 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5464 long eventTime = ev.getEventTime(); 5465 5466 // Due to the touch screen edge effect, a touch closer to the edge 5467 // always snapped to the edge. As getViewWidth() can be different from 5468 // getWidth() due to the scrollbar, adjusting the point to match 5469 // getViewWidth(). Same applied to the height. 5470 x = Math.min(x, getViewWidth() - 1); 5471 y = Math.min(y, getViewHeightWithTitle() - 1); 5472 5473 int deltaX = mLastTouchX - x; 5474 int deltaY = mLastTouchY - y; 5475 int contentX = viewToContentX(x + mScrollX); 5476 int contentY = viewToContentY(y + mScrollY); 5477 5478 switch (action) { 5479 case MotionEvent.ACTION_DOWN: { 5480 mPreventDefault = PREVENT_DEFAULT_NO; 5481 mConfirmMove = false; 5482 mInitialHitTestResult = null; 5483 if (!mScroller.isFinished()) { 5484 // stop the current scroll animation, but if this is 5485 // the start of a fling, allow it to add to the current 5486 // fling's velocity 5487 mScroller.abortAnimation(); 5488 mTouchMode = TOUCH_DRAG_START_MODE; 5489 mConfirmMove = true; 5490 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5491 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5492 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5493 if (getSettings().supportTouchOnly()) { 5494 removeTouchHighlight(true); 5495 } 5496 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5497 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5498 } else { 5499 // commit the short press action for the previous tap 5500 doShortPress(); 5501 mTouchMode = TOUCH_INIT_MODE; 5502 mDeferTouchProcess = (!inFullScreenMode() 5503 && mForwardTouchEvents) ? hitFocusedPlugin( 5504 contentX, contentY) : false; 5505 } 5506 } else { // the normal case 5507 mTouchMode = TOUCH_INIT_MODE; 5508 mDeferTouchProcess = (!inFullScreenMode() 5509 && mForwardTouchEvents) ? hitFocusedPlugin( 5510 contentX, contentY) : false; 5511 mWebViewCore.sendMessage( 5512 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5513 if (getSettings().supportTouchOnly()) { 5514 TouchHighlightData data = new TouchHighlightData(); 5515 data.mX = contentX; 5516 data.mY = contentY; 5517 data.mSlop = viewToContentDimension(mNavSlop); 5518 mWebViewCore.sendMessageDelayed( 5519 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5520 ViewConfiguration.getTapTimeout()); 5521 if (DEBUG_TOUCH_HIGHLIGHT) { 5522 if (getSettings().getNavDump()) { 5523 mTouchHighlightX = (int) x + mScrollX; 5524 mTouchHighlightY = (int) y + mScrollY; 5525 mPrivateHandler.postDelayed(new Runnable() { 5526 public void run() { 5527 mTouchHighlightX = mTouchHighlightY = 0; 5528 invalidate(); 5529 } 5530 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5531 } 5532 } 5533 } 5534 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5535 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5536 (eventTime - mLastTouchUpTime), eventTime); 5537 } 5538 if (mSelectingText) { 5539 mDrawSelectionPointer = false; 5540 mSelectionStarted = nativeStartSelection(contentX, contentY); 5541 if (DebugFlags.WEB_VIEW) { 5542 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5543 } 5544 invalidate(); 5545 } 5546 } 5547 // Trigger the link 5548 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5549 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5550 mPrivateHandler.sendEmptyMessageDelayed( 5551 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5552 mPrivateHandler.sendEmptyMessageDelayed( 5553 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5554 if (inFullScreenMode() || mDeferTouchProcess) { 5555 mPreventDefault = PREVENT_DEFAULT_YES; 5556 } else if (mForwardTouchEvents) { 5557 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5558 } else { 5559 mPreventDefault = PREVENT_DEFAULT_NO; 5560 } 5561 // pass the touch events from UI thread to WebCore thread 5562 if (shouldForwardTouchEvent()) { 5563 TouchEventData ted = new TouchEventData(); 5564 ted.mAction = action; 5565 ted.mIds = new int[1]; 5566 ted.mIds[0] = ev.getPointerId(0); 5567 ted.mPoints = new Point[1]; 5568 ted.mPoints[0] = new Point(contentX, contentY); 5569 ted.mPointsInView = new Point[1]; 5570 ted.mPointsInView[0] = new Point(x, y); 5571 ted.mMetaState = ev.getMetaState(); 5572 ted.mReprocess = mDeferTouchProcess; 5573 ted.mNativeLayer = nativeScrollableLayer( 5574 contentX, contentY, ted.mNativeLayerRect, null); 5575 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5576 mTouchEventQueue.preQueueTouchEventData(ted); 5577 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5578 if (mDeferTouchProcess) { 5579 // still needs to set them for compute deltaX/Y 5580 mLastTouchX = x; 5581 mLastTouchY = y; 5582 break; 5583 } 5584 if (!inFullScreenMode()) { 5585 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5586 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5587 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5588 action, 0), TAP_TIMEOUT); 5589 } 5590 } 5591 } 5592 startTouch(x, y, eventTime); 5593 break; 5594 } 5595 case MotionEvent.ACTION_MOVE: { 5596 boolean firstMove = false; 5597 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5598 >= mTouchSlopSquare) { 5599 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5600 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5601 mConfirmMove = true; 5602 firstMove = true; 5603 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5604 mTouchMode = TOUCH_INIT_MODE; 5605 } 5606 if (getSettings().supportTouchOnly()) { 5607 removeTouchHighlight(true); 5608 } 5609 } 5610 // pass the touch events from UI thread to WebCore thread 5611 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5612 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5613 TouchEventData ted = new TouchEventData(); 5614 ted.mAction = action; 5615 ted.mIds = new int[1]; 5616 ted.mIds[0] = ev.getPointerId(0); 5617 ted.mPoints = new Point[1]; 5618 ted.mPoints[0] = new Point(contentX, contentY); 5619 ted.mPointsInView = new Point[1]; 5620 ted.mPointsInView[0] = new Point(x, y); 5621 ted.mMetaState = ev.getMetaState(); 5622 ted.mReprocess = mDeferTouchProcess; 5623 ted.mNativeLayer = mScrollingLayer; 5624 ted.mNativeLayerRect.set(mScrollingLayerRect); 5625 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5626 mTouchEventQueue.preQueueTouchEventData(ted); 5627 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5628 mLastSentTouchTime = eventTime; 5629 if (mDeferTouchProcess) { 5630 break; 5631 } 5632 if (firstMove && !inFullScreenMode()) { 5633 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5634 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5635 action, 0), TAP_TIMEOUT); 5636 } 5637 } 5638 if (mTouchMode == TOUCH_DONE_MODE 5639 || mPreventDefault == PREVENT_DEFAULT_YES) { 5640 // no dragging during scroll zoom animation, or when prevent 5641 // default is yes 5642 break; 5643 } 5644 if (mVelocityTracker == null) { 5645 Log.e(LOGTAG, "Got null mVelocityTracker when " 5646 + "mPreventDefault = " + mPreventDefault 5647 + " mDeferTouchProcess = " + mDeferTouchProcess 5648 + " mTouchMode = " + mTouchMode); 5649 } else { 5650 mVelocityTracker.addMovement(ev); 5651 } 5652 if (mSelectingText && mSelectionStarted) { 5653 if (DebugFlags.WEB_VIEW) { 5654 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5655 } 5656 ViewParent parent = getParent(); 5657 if (parent != null) { 5658 parent.requestDisallowInterceptTouchEvent(true); 5659 } 5660 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5661 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5662 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5663 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5664 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5665 && !mSentAutoScrollMessage) { 5666 mSentAutoScrollMessage = true; 5667 mPrivateHandler.sendEmptyMessageDelayed( 5668 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5669 } 5670 if (deltaX != 0 || deltaY != 0) { 5671 nativeExtendSelection(contentX, contentY); 5672 invalidate(); 5673 } 5674 break; 5675 } 5676 5677 if (mTouchMode != TOUCH_DRAG_MODE && 5678 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5679 5680 if (!mConfirmMove) { 5681 break; 5682 } 5683 5684 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5685 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5686 // track mLastTouchTime as we may need to do fling at 5687 // ACTION_UP 5688 mLastTouchTime = eventTime; 5689 break; 5690 } 5691 5692 // Only lock dragging to one axis if we don't have a scale in progress. 5693 // Scaling implies free-roaming movement. Note this is only ever a question 5694 // if mZoomManager.supportsPanDuringZoom() is true. 5695 final ScaleGestureDetector detector = 5696 mZoomManager.getMultiTouchGestureDetector(); 5697 if (detector == null || !detector.isInProgress()) { 5698 // if it starts nearly horizontal or vertical, enforce it 5699 int ax = Math.abs(deltaX); 5700 int ay = Math.abs(deltaY); 5701 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5702 mSnapScrollMode = SNAP_X; 5703 mSnapPositive = deltaX > 0; 5704 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5705 mSnapScrollMode = SNAP_Y; 5706 mSnapPositive = deltaY > 0; 5707 } 5708 } 5709 5710 mTouchMode = TOUCH_DRAG_MODE; 5711 mLastTouchX = x; 5712 mLastTouchY = y; 5713 deltaX = 0; 5714 deltaY = 0; 5715 5716 startScrollingLayer(x, y); 5717 startDrag(); 5718 } 5719 5720 // do pan 5721 boolean done = false; 5722 boolean keepScrollBarsVisible = false; 5723 if (deltaX == 0 && deltaY == 0) { 5724 keepScrollBarsVisible = done = true; 5725 } else { 5726 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5727 int ax = Math.abs(deltaX); 5728 int ay = Math.abs(deltaY); 5729 if (mSnapScrollMode == SNAP_X) { 5730 // radical change means getting out of snap mode 5731 if (ay > MAX_SLOPE_FOR_DIAG * ax 5732 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5733 mSnapScrollMode = SNAP_NONE; 5734 } 5735 // reverse direction means lock in the snap mode 5736 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5737 (mSnapPositive 5738 ? deltaX < -mMinLockSnapReverseDistance 5739 : deltaX > mMinLockSnapReverseDistance)) { 5740 mSnapScrollMode |= SNAP_LOCK; 5741 } 5742 } else { 5743 // radical change means getting out of snap mode 5744 if (ax > MAX_SLOPE_FOR_DIAG * ay 5745 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5746 mSnapScrollMode = SNAP_NONE; 5747 } 5748 // reverse direction means lock in the snap mode 5749 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5750 (mSnapPositive 5751 ? deltaY < -mMinLockSnapReverseDistance 5752 : deltaY > mMinLockSnapReverseDistance)) { 5753 mSnapScrollMode |= SNAP_LOCK; 5754 } 5755 } 5756 } 5757 if (mSnapScrollMode != SNAP_NONE) { 5758 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5759 deltaY = 0; 5760 } else { 5761 deltaX = 0; 5762 } 5763 } 5764 if ((deltaX | deltaY) != 0) { 5765 if (deltaX != 0) { 5766 mLastTouchX = x; 5767 } 5768 if (deltaY != 0) { 5769 mLastTouchY = y; 5770 } 5771 mHeldMotionless = MOTIONLESS_FALSE; 5772 } 5773 mLastTouchTime = eventTime; 5774 } 5775 5776 doDrag(deltaX, deltaY); 5777 5778 // Turn off scrollbars when dragging a layer. 5779 if (keepScrollBarsVisible && 5780 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5781 if (mHeldMotionless != MOTIONLESS_TRUE) { 5782 mHeldMotionless = MOTIONLESS_TRUE; 5783 invalidate(); 5784 } 5785 // keep the scrollbar on the screen even there is no scroll 5786 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5787 false); 5788 // return false to indicate that we can't pan out of the 5789 // view space 5790 return !done; 5791 } 5792 break; 5793 } 5794 case MotionEvent.ACTION_UP: { 5795 if (!isFocused()) requestFocus(); 5796 // pass the touch events from UI thread to WebCore thread 5797 if (shouldForwardTouchEvent()) { 5798 TouchEventData ted = new TouchEventData(); 5799 ted.mIds = new int[1]; 5800 ted.mIds[0] = ev.getPointerId(0); 5801 ted.mAction = action; 5802 ted.mPoints = new Point[1]; 5803 ted.mPoints[0] = new Point(contentX, contentY); 5804 ted.mPointsInView = new Point[1]; 5805 ted.mPointsInView[0] = new Point(x, y); 5806 ted.mMetaState = ev.getMetaState(); 5807 ted.mReprocess = mDeferTouchProcess; 5808 ted.mNativeLayer = mScrollingLayer; 5809 ted.mNativeLayerRect.set(mScrollingLayerRect); 5810 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5811 mTouchEventQueue.preQueueTouchEventData(ted); 5812 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5813 } 5814 mLastTouchUpTime = eventTime; 5815 if (mSentAutoScrollMessage) { 5816 mAutoScrollX = mAutoScrollY = 0; 5817 } 5818 switch (mTouchMode) { 5819 case TOUCH_DOUBLE_TAP_MODE: // double tap 5820 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5821 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5822 if (inFullScreenMode() || mDeferTouchProcess) { 5823 TouchEventData ted = new TouchEventData(); 5824 ted.mIds = new int[1]; 5825 ted.mIds[0] = ev.getPointerId(0); 5826 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5827 ted.mPoints = new Point[1]; 5828 ted.mPoints[0] = new Point(contentX, contentY); 5829 ted.mPointsInView = new Point[1]; 5830 ted.mPointsInView[0] = new Point(x, y); 5831 ted.mMetaState = ev.getMetaState(); 5832 ted.mReprocess = mDeferTouchProcess; 5833 ted.mNativeLayer = nativeScrollableLayer( 5834 contentX, contentY, 5835 ted.mNativeLayerRect, null); 5836 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5837 mTouchEventQueue.preQueueTouchEventData(ted); 5838 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5839 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5840 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5841 mTouchMode = TOUCH_DONE_MODE; 5842 } 5843 break; 5844 case TOUCH_INIT_MODE: // tap 5845 case TOUCH_SHORTPRESS_START_MODE: 5846 case TOUCH_SHORTPRESS_MODE: 5847 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5848 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5849 if (mConfirmMove) { 5850 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5851 " WebCore's response for touch down."); 5852 if (mPreventDefault != PREVENT_DEFAULT_YES 5853 && (computeMaxScrollX() > 0 5854 || computeMaxScrollY() > 0)) { 5855 // If the user has performed a very quick touch 5856 // sequence it is possible that we may get here 5857 // before WebCore has had a chance to process the events. 5858 // In this case, any call to preventDefault in the 5859 // JS touch handler will not have been executed yet. 5860 // Hence we will see both the UI (now) and WebCore 5861 // (when context switches) handling the event, 5862 // regardless of whether the web developer actually 5863 // doeses preventDefault in their touch handler. This 5864 // is the nature of our asynchronous touch model. 5865 5866 // we will not rewrite drag code here, but we 5867 // will try fling if it applies. 5868 WebViewCore.reducePriority(); 5869 // to get better performance, pause updating the 5870 // picture 5871 WebViewCore.pauseUpdatePicture(mWebViewCore); 5872 // fall through to TOUCH_DRAG_MODE 5873 } else { 5874 // WebKit may consume the touch event and modify 5875 // DOM. drawContentPicture() will be called with 5876 // animateSroll as true for better performance. 5877 // Force redraw in high-quality. 5878 invalidate(); 5879 break; 5880 } 5881 } else { 5882 if (mSelectingText) { 5883 // tapping on selection or controls does nothing 5884 if (!nativeHitSelection(contentX, contentY)) { 5885 selectionDone(); 5886 } 5887 break; 5888 } 5889 // only trigger double tap if the WebView is 5890 // scalable 5891 if (mTouchMode == TOUCH_INIT_MODE 5892 && (canZoomIn() || canZoomOut())) { 5893 mPrivateHandler.sendEmptyMessageDelayed( 5894 RELEASE_SINGLE_TAP, ViewConfiguration 5895 .getDoubleTapTimeout()); 5896 } else { 5897 doShortPress(); 5898 } 5899 break; 5900 } 5901 case TOUCH_DRAG_MODE: 5902 case TOUCH_DRAG_LAYER_MODE: 5903 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5904 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5905 // if the user waits a while w/o moving before the 5906 // up, we don't want to do a fling 5907 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5908 if (mVelocityTracker == null) { 5909 Log.e(LOGTAG, "Got null mVelocityTracker when " 5910 + "mPreventDefault = " 5911 + mPreventDefault 5912 + " mDeferTouchProcess = " 5913 + mDeferTouchProcess); 5914 } else { 5915 mVelocityTracker.addMovement(ev); 5916 } 5917 // set to MOTIONLESS_IGNORE so that it won't keep 5918 // removing and sending message in 5919 // drawCoreAndCursorRing() 5920 mHeldMotionless = MOTIONLESS_IGNORE; 5921 doFling(); 5922 break; 5923 } else { 5924 if (mScroller.springBack(mScrollX, mScrollY, 0, 5925 computeMaxScrollX(), 0, 5926 computeMaxScrollY())) { 5927 invalidate(); 5928 } 5929 } 5930 // redraw in high-quality, as we're done dragging 5931 mHeldMotionless = MOTIONLESS_TRUE; 5932 invalidate(); 5933 // fall through 5934 case TOUCH_DRAG_START_MODE: 5935 // TOUCH_DRAG_START_MODE should not happen for the real 5936 // device as we almost certain will get a MOVE. But this 5937 // is possible on emulator. 5938 mLastVelocity = 0; 5939 WebViewCore.resumePriority(); 5940 if (!mSelectingText) { 5941 WebViewCore.resumeUpdatePicture(mWebViewCore); 5942 } 5943 break; 5944 } 5945 stopTouch(); 5946 break; 5947 } 5948 case MotionEvent.ACTION_CANCEL: { 5949 if (mTouchMode == TOUCH_DRAG_MODE) { 5950 mScroller.springBack(mScrollX, mScrollY, 0, 5951 computeMaxScrollX(), 0, computeMaxScrollY()); 5952 invalidate(); 5953 } 5954 cancelWebCoreTouchEvent(contentX, contentY, false); 5955 cancelTouch(); 5956 break; 5957 } 5958 } 5959 return true; 5960 } 5961 5962 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 5963 TouchEventData ted = new TouchEventData(); 5964 ted.mAction = ev.getActionMasked(); 5965 final int count = ev.getPointerCount(); 5966 ted.mIds = new int[count]; 5967 ted.mPoints = new Point[count]; 5968 ted.mPointsInView = new Point[count]; 5969 for (int c = 0; c < count; c++) { 5970 ted.mIds[c] = ev.getPointerId(c); 5971 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5972 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5973 ted.mPoints[c] = new Point(x, y); 5974 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 5975 } 5976 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 5977 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 5978 ted.mActionIndex = ev.getActionIndex(); 5979 } 5980 ted.mMetaState = ev.getMetaState(); 5981 ted.mReprocess = true; 5982 ted.mMotionEvent = MotionEvent.obtain(ev); 5983 ted.mSequence = sequence; 5984 mTouchEventQueue.preQueueTouchEventData(ted); 5985 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5986 cancelLongPress(); 5987 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5988 } 5989 5990 void handleMultiTouchInWebView(MotionEvent ev) { 5991 if (DebugFlags.WEB_VIEW) { 5992 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5993 + " mTouchMode=" + mTouchMode 5994 + " numPointers=" + ev.getPointerCount() 5995 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5996 } 5997 5998 final ScaleGestureDetector detector = 5999 mZoomManager.getMultiTouchGestureDetector(); 6000 6001 // A few apps use WebView but don't instantiate gesture detector. 6002 // We don't need to support multi touch for them. 6003 if (detector == null) return; 6004 6005 float x = ev.getX(); 6006 float y = ev.getY(); 6007 6008 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6009 detector.onTouchEvent(ev); 6010 6011 if (detector.isInProgress()) { 6012 if (DebugFlags.WEB_VIEW) { 6013 Log.v(LOGTAG, "detector is in progress"); 6014 } 6015 mLastTouchTime = ev.getEventTime(); 6016 x = detector.getFocusX(); 6017 y = detector.getFocusY(); 6018 6019 cancelLongPress(); 6020 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6021 if (!mZoomManager.supportsPanDuringZoom()) { 6022 return; 6023 } 6024 mTouchMode = TOUCH_DRAG_MODE; 6025 if (mVelocityTracker == null) { 6026 mVelocityTracker = VelocityTracker.obtain(); 6027 } 6028 } 6029 } 6030 6031 int action = ev.getActionMasked(); 6032 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6033 cancelTouch(); 6034 action = MotionEvent.ACTION_DOWN; 6035 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() == 2) { 6036 // set mLastTouchX/Y to the remaining point 6037 mLastTouchX = Math.round(x); 6038 mLastTouchY = Math.round(y); 6039 } else if (action == MotionEvent.ACTION_MOVE) { 6040 // negative x or y indicate it is on the edge, skip it. 6041 if (x < 0 || y < 0) { 6042 return; 6043 } 6044 } 6045 6046 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6047 } 6048 6049 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6050 if (shouldForwardTouchEvent()) { 6051 if (removeEvents) { 6052 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6053 } 6054 TouchEventData ted = new TouchEventData(); 6055 ted.mIds = new int[1]; 6056 ted.mIds[0] = 0; 6057 ted.mPoints = new Point[1]; 6058 ted.mPoints[0] = new Point(x, y); 6059 ted.mPointsInView = new Point[1]; 6060 int viewX = contentToViewX(x) - mScrollX; 6061 int viewY = contentToViewY(y) - mScrollY; 6062 ted.mPointsInView[0] = new Point(viewX, viewY); 6063 ted.mAction = MotionEvent.ACTION_CANCEL; 6064 ted.mNativeLayer = nativeScrollableLayer( 6065 x, y, ted.mNativeLayerRect, null); 6066 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6067 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6068 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6069 6070 if (removeEvents) { 6071 // Mark this after sending the message above; we should 6072 // be willing to ignore the cancel event that we just sent. 6073 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6074 } 6075 } 6076 } 6077 6078 private void startTouch(float x, float y, long eventTime) { 6079 // Remember where the motion event started 6080 mLastTouchX = Math.round(x); 6081 mLastTouchY = Math.round(y); 6082 mLastTouchTime = eventTime; 6083 mVelocityTracker = VelocityTracker.obtain(); 6084 mSnapScrollMode = SNAP_NONE; 6085 } 6086 6087 private void startDrag() { 6088 WebViewCore.reducePriority(); 6089 // to get better performance, pause updating the picture 6090 WebViewCore.pauseUpdatePicture(mWebViewCore); 6091 if (!mDragFromTextInput) { 6092 nativeHideCursor(); 6093 } 6094 6095 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6096 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6097 mZoomManager.invokeZoomPicker(); 6098 } 6099 } 6100 6101 private void doDrag(int deltaX, int deltaY) { 6102 if ((deltaX | deltaY) != 0) { 6103 int oldX = mScrollX; 6104 int oldY = mScrollY; 6105 int rangeX = computeMaxScrollX(); 6106 int rangeY = computeMaxScrollY(); 6107 int overscrollDistance = mOverscrollDistance; 6108 6109 // Check for the original scrolling layer in case we change 6110 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6111 // reached the edge of a layer but mScrollingLayer will be non-zero 6112 // if we initiated the drag on a layer. 6113 if (mScrollingLayer != 0) { 6114 final int contentX = viewToContentDimension(deltaX); 6115 final int contentY = viewToContentDimension(deltaY); 6116 6117 // Check the scrolling bounds to see if we will actually do any 6118 // scrolling. The rectangle is in document coordinates. 6119 final int maxX = mScrollingLayerRect.right; 6120 final int maxY = mScrollingLayerRect.bottom; 6121 final int resultX = Math.max(0, 6122 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6123 final int resultY = Math.max(0, 6124 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6125 6126 if (resultX != mScrollingLayerRect.left || 6127 resultY != mScrollingLayerRect.top) { 6128 // In case we switched to dragging the page. 6129 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6130 deltaX = contentX; 6131 deltaY = contentY; 6132 oldX = mScrollingLayerRect.left; 6133 oldY = mScrollingLayerRect.top; 6134 rangeX = maxX; 6135 rangeY = maxY; 6136 } else { 6137 // Scroll the main page if we are not going to scroll the 6138 // layer. This does not reset mScrollingLayer in case the 6139 // user changes directions and the layer can scroll the 6140 // other way. 6141 mTouchMode = TOUCH_DRAG_MODE; 6142 } 6143 } 6144 6145 if (mOverScrollGlow != null) { 6146 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6147 } 6148 6149 overScrollBy(deltaX, deltaY, oldX, oldY, 6150 rangeX, rangeY, 6151 mOverscrollDistance, mOverscrollDistance, true); 6152 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6153 invalidate(); 6154 } 6155 } 6156 mZoomManager.keepZoomPickerVisible(); 6157 } 6158 6159 private void stopTouch() { 6160 // we also use mVelocityTracker == null to tell us that we are 6161 // not "moving around", so we can take the slower/prettier 6162 // mode in the drawing code 6163 if (mVelocityTracker != null) { 6164 mVelocityTracker.recycle(); 6165 mVelocityTracker = null; 6166 } 6167 6168 // Release any pulled glows 6169 if (mOverScrollGlow != null) { 6170 mOverScrollGlow.releaseAll(); 6171 } 6172 } 6173 6174 private void cancelTouch() { 6175 // we also use mVelocityTracker == null to tell us that we are 6176 // not "moving around", so we can take the slower/prettier 6177 // mode in the drawing code 6178 if (mVelocityTracker != null) { 6179 mVelocityTracker.recycle(); 6180 mVelocityTracker = null; 6181 } 6182 6183 if ((mTouchMode == TOUCH_DRAG_MODE 6184 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6185 WebViewCore.resumePriority(); 6186 WebViewCore.resumeUpdatePicture(mWebViewCore); 6187 } 6188 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6189 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6190 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6191 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6192 if (getSettings().supportTouchOnly()) { 6193 removeTouchHighlight(true); 6194 } 6195 mHeldMotionless = MOTIONLESS_TRUE; 6196 mTouchMode = TOUCH_DONE_MODE; 6197 nativeHideCursor(); 6198 } 6199 6200 @Override 6201 public boolean onGenericMotionEvent(MotionEvent event) { 6202 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6203 switch (event.getAction()) { 6204 case MotionEvent.ACTION_SCROLL: { 6205 final float vscroll; 6206 final float hscroll; 6207 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6208 vscroll = 0; 6209 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6210 } else { 6211 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6212 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6213 } 6214 if (hscroll != 0 || vscroll != 0) { 6215 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6216 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6217 if (pinScrollBy(hdelta, vdelta, true, 0)) { 6218 return true; 6219 } 6220 } 6221 } 6222 } 6223 } 6224 return super.onGenericMotionEvent(event); 6225 } 6226 6227 private long mTrackballFirstTime = 0; 6228 private long mTrackballLastTime = 0; 6229 private float mTrackballRemainsX = 0.0f; 6230 private float mTrackballRemainsY = 0.0f; 6231 private int mTrackballXMove = 0; 6232 private int mTrackballYMove = 0; 6233 private boolean mSelectingText = false; 6234 private boolean mSelectionStarted = false; 6235 private boolean mExtendSelection = false; 6236 private boolean mDrawSelectionPointer = false; 6237 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6238 private static final int TRACKBALL_TIMEOUT = 200; 6239 private static final int TRACKBALL_WAIT = 100; 6240 private static final int TRACKBALL_SCALE = 400; 6241 private static final int TRACKBALL_SCROLL_COUNT = 5; 6242 private static final int TRACKBALL_MOVE_COUNT = 10; 6243 private static final int TRACKBALL_MULTIPLIER = 3; 6244 private static final int SELECT_CURSOR_OFFSET = 16; 6245 private static final int SELECT_SCROLL = 5; 6246 private int mSelectX = 0; 6247 private int mSelectY = 0; 6248 private boolean mFocusSizeChanged = false; 6249 private boolean mTrackballDown = false; 6250 private long mTrackballUpTime = 0; 6251 private long mLastCursorTime = 0; 6252 private Rect mLastCursorBounds; 6253 6254 // Set by default; BrowserActivity clears to interpret trackball data 6255 // directly for movement. Currently, the framework only passes 6256 // arrow key events, not trackball events, from one child to the next 6257 private boolean mMapTrackballToArrowKeys = true; 6258 6259 public void setMapTrackballToArrowKeys(boolean setMap) { 6260 mMapTrackballToArrowKeys = setMap; 6261 } 6262 6263 void resetTrackballTime() { 6264 mTrackballLastTime = 0; 6265 } 6266 6267 @Override 6268 public boolean onTrackballEvent(MotionEvent ev) { 6269 long time = ev.getEventTime(); 6270 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6271 if (ev.getY() > 0) pageDown(true); 6272 if (ev.getY() < 0) pageUp(true); 6273 return true; 6274 } 6275 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6276 if (mSelectingText) { 6277 return true; // discard press if copy in progress 6278 } 6279 mTrackballDown = true; 6280 if (mNativeClass == 0) { 6281 return false; 6282 } 6283 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6284 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6285 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6286 nativeSelectBestAt(mLastCursorBounds); 6287 } 6288 if (DebugFlags.WEB_VIEW) { 6289 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6290 + " time=" + time 6291 + " mLastCursorTime=" + mLastCursorTime); 6292 } 6293 if (isInTouchMode()) requestFocusFromTouch(); 6294 return false; // let common code in onKeyDown at it 6295 } 6296 if (ev.getAction() == MotionEvent.ACTION_UP) { 6297 // LONG_PRESS_CENTER is set in common onKeyDown 6298 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6299 mTrackballDown = false; 6300 mTrackballUpTime = time; 6301 if (mSelectingText) { 6302 if (mExtendSelection) { 6303 copySelection(); 6304 selectionDone(); 6305 } else { 6306 mExtendSelection = true; 6307 nativeSetExtendSelection(); 6308 invalidate(); // draw the i-beam instead of the arrow 6309 } 6310 return true; // discard press if copy in progress 6311 } 6312 if (DebugFlags.WEB_VIEW) { 6313 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6314 + " time=" + time 6315 ); 6316 } 6317 return false; // let common code in onKeyUp at it 6318 } 6319 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6320 AccessibilityManager.getInstance(mContext).isEnabled()) { 6321 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6322 return false; 6323 } 6324 if (mTrackballDown) { 6325 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6326 return true; // discard move if trackball is down 6327 } 6328 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6329 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6330 return true; 6331 } 6332 // TODO: alternatively we can do panning as touch does 6333 switchOutDrawHistory(); 6334 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6335 if (DebugFlags.WEB_VIEW) { 6336 Log.v(LOGTAG, "onTrackballEvent time=" 6337 + time + " last=" + mTrackballLastTime); 6338 } 6339 mTrackballFirstTime = time; 6340 mTrackballXMove = mTrackballYMove = 0; 6341 } 6342 mTrackballLastTime = time; 6343 if (DebugFlags.WEB_VIEW) { 6344 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6345 } 6346 mTrackballRemainsX += ev.getX(); 6347 mTrackballRemainsY += ev.getY(); 6348 doTrackball(time, ev.getMetaState()); 6349 return true; 6350 } 6351 6352 void moveSelection(float xRate, float yRate) { 6353 if (mNativeClass == 0) 6354 return; 6355 int width = getViewWidth(); 6356 int height = getViewHeight(); 6357 mSelectX += xRate; 6358 mSelectY += yRate; 6359 int maxX = width + mScrollX; 6360 int maxY = height + mScrollY; 6361 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6362 , mSelectX)); 6363 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6364 , mSelectY)); 6365 if (DebugFlags.WEB_VIEW) { 6366 Log.v(LOGTAG, "moveSelection" 6367 + " mSelectX=" + mSelectX 6368 + " mSelectY=" + mSelectY 6369 + " mScrollX=" + mScrollX 6370 + " mScrollY=" + mScrollY 6371 + " xRate=" + xRate 6372 + " yRate=" + yRate 6373 ); 6374 } 6375 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6376 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6377 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6378 : 0; 6379 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6380 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6381 : 0; 6382 pinScrollBy(scrollX, scrollY, true, 0); 6383 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6384 requestRectangleOnScreen(select); 6385 invalidate(); 6386 } 6387 6388 private int scaleTrackballX(float xRate, int width) { 6389 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6390 int nextXMove = xMove; 6391 if (xMove > 0) { 6392 if (xMove > mTrackballXMove) { 6393 xMove -= mTrackballXMove; 6394 } 6395 } else if (xMove < mTrackballXMove) { 6396 xMove -= mTrackballXMove; 6397 } 6398 mTrackballXMove = nextXMove; 6399 return xMove; 6400 } 6401 6402 private int scaleTrackballY(float yRate, int height) { 6403 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6404 int nextYMove = yMove; 6405 if (yMove > 0) { 6406 if (yMove > mTrackballYMove) { 6407 yMove -= mTrackballYMove; 6408 } 6409 } else if (yMove < mTrackballYMove) { 6410 yMove -= mTrackballYMove; 6411 } 6412 mTrackballYMove = nextYMove; 6413 return yMove; 6414 } 6415 6416 private int keyCodeToSoundsEffect(int keyCode) { 6417 switch(keyCode) { 6418 case KeyEvent.KEYCODE_DPAD_UP: 6419 return SoundEffectConstants.NAVIGATION_UP; 6420 case KeyEvent.KEYCODE_DPAD_RIGHT: 6421 return SoundEffectConstants.NAVIGATION_RIGHT; 6422 case KeyEvent.KEYCODE_DPAD_DOWN: 6423 return SoundEffectConstants.NAVIGATION_DOWN; 6424 case KeyEvent.KEYCODE_DPAD_LEFT: 6425 return SoundEffectConstants.NAVIGATION_LEFT; 6426 } 6427 throw new IllegalArgumentException("keyCode must be one of " + 6428 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6429 "KEYCODE_DPAD_LEFT}."); 6430 } 6431 6432 private void doTrackball(long time, int metaState) { 6433 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6434 if (elapsed == 0) { 6435 elapsed = TRACKBALL_TIMEOUT; 6436 } 6437 float xRate = mTrackballRemainsX * 1000 / elapsed; 6438 float yRate = mTrackballRemainsY * 1000 / elapsed; 6439 int viewWidth = getViewWidth(); 6440 int viewHeight = getViewHeight(); 6441 if (mSelectingText) { 6442 if (!mDrawSelectionPointer) { 6443 // The last selection was made by touch, disabling drawing the 6444 // selection pointer. Allow the trackball to adjust the 6445 // position of the touch control. 6446 mSelectX = contentToViewX(nativeSelectionX()); 6447 mSelectY = contentToViewY(nativeSelectionY()); 6448 mDrawSelectionPointer = mExtendSelection = true; 6449 nativeSetExtendSelection(); 6450 } 6451 moveSelection(scaleTrackballX(xRate, viewWidth), 6452 scaleTrackballY(yRate, viewHeight)); 6453 mTrackballRemainsX = mTrackballRemainsY = 0; 6454 return; 6455 } 6456 float ax = Math.abs(xRate); 6457 float ay = Math.abs(yRate); 6458 float maxA = Math.max(ax, ay); 6459 if (DebugFlags.WEB_VIEW) { 6460 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6461 + " xRate=" + xRate 6462 + " yRate=" + yRate 6463 + " mTrackballRemainsX=" + mTrackballRemainsX 6464 + " mTrackballRemainsY=" + mTrackballRemainsY); 6465 } 6466 int width = mContentWidth - viewWidth; 6467 int height = mContentHeight - viewHeight; 6468 if (width < 0) width = 0; 6469 if (height < 0) height = 0; 6470 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6471 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6472 maxA = Math.max(ax, ay); 6473 int count = Math.max(0, (int) maxA); 6474 int oldScrollX = mScrollX; 6475 int oldScrollY = mScrollY; 6476 if (count > 0) { 6477 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6478 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6479 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6480 KeyEvent.KEYCODE_DPAD_RIGHT; 6481 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6482 if (DebugFlags.WEB_VIEW) { 6483 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6484 + " count=" + count 6485 + " mTrackballRemainsX=" + mTrackballRemainsX 6486 + " mTrackballRemainsY=" + mTrackballRemainsY); 6487 } 6488 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6489 for (int i = 0; i < count; i++) { 6490 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6491 } 6492 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6493 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6494 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6495 } 6496 mTrackballRemainsX = mTrackballRemainsY = 0; 6497 } 6498 if (count >= TRACKBALL_SCROLL_COUNT) { 6499 int xMove = scaleTrackballX(xRate, width); 6500 int yMove = scaleTrackballY(yRate, height); 6501 if (DebugFlags.WEB_VIEW) { 6502 Log.v(LOGTAG, "doTrackball pinScrollBy" 6503 + " count=" + count 6504 + " xMove=" + xMove + " yMove=" + yMove 6505 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6506 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6507 ); 6508 } 6509 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6510 xMove = 0; 6511 } 6512 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6513 yMove = 0; 6514 } 6515 if (xMove != 0 || yMove != 0) { 6516 pinScrollBy(xMove, yMove, true, 0); 6517 } 6518 } 6519 } 6520 6521 /** 6522 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6523 * @return Maximum horizontal scroll position within real content 6524 */ 6525 int computeMaxScrollX() { 6526 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6527 } 6528 6529 /** 6530 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6531 * @return Maximum vertical scroll position within real content 6532 */ 6533 int computeMaxScrollY() { 6534 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6535 - getViewHeightWithTitle(), 0); 6536 } 6537 6538 boolean updateScrollCoordinates(int x, int y) { 6539 int oldX = mScrollX; 6540 int oldY = mScrollY; 6541 mScrollX = x; 6542 mScrollY = y; 6543 if (oldX != mScrollX || oldY != mScrollY) { 6544 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6545 return true; 6546 } else { 6547 return false; 6548 } 6549 } 6550 6551 public void flingScroll(int vx, int vy) { 6552 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6553 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6554 invalidate(); 6555 } 6556 6557 private void doFling() { 6558 if (mVelocityTracker == null) { 6559 return; 6560 } 6561 int maxX = computeMaxScrollX(); 6562 int maxY = computeMaxScrollY(); 6563 6564 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6565 int vx = (int) mVelocityTracker.getXVelocity(); 6566 int vy = (int) mVelocityTracker.getYVelocity(); 6567 6568 int scrollX = mScrollX; 6569 int scrollY = mScrollY; 6570 int overscrollDistance = mOverscrollDistance; 6571 int overflingDistance = mOverflingDistance; 6572 6573 // Use the layer's scroll data if applicable. 6574 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6575 scrollX = mScrollingLayerRect.left; 6576 scrollY = mScrollingLayerRect.top; 6577 maxX = mScrollingLayerRect.right; 6578 maxY = mScrollingLayerRect.bottom; 6579 // No overscrolling for layers. 6580 overscrollDistance = overflingDistance = 0; 6581 } 6582 6583 if (mSnapScrollMode != SNAP_NONE) { 6584 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6585 vy = 0; 6586 } else { 6587 vx = 0; 6588 } 6589 } 6590 if (true /* EMG release: make our fling more like Maps' */) { 6591 // maps cuts their velocity in half 6592 vx = vx * 3 / 4; 6593 vy = vy * 3 / 4; 6594 } 6595 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6596 WebViewCore.resumePriority(); 6597 if (!mSelectingText) { 6598 WebViewCore.resumeUpdatePicture(mWebViewCore); 6599 } 6600 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6601 invalidate(); 6602 } 6603 return; 6604 } 6605 float currentVelocity = mScroller.getCurrVelocity(); 6606 float velocity = (float) Math.hypot(vx, vy); 6607 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6608 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6609 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6610 - Math.atan2(vy, vx))); 6611 final float circle = (float) (Math.PI) * 2.0f; 6612 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6613 vx += currentVelocity * mLastVelX / mLastVelocity; 6614 vy += currentVelocity * mLastVelY / mLastVelocity; 6615 velocity = (float) Math.hypot(vx, vy); 6616 if (DebugFlags.WEB_VIEW) { 6617 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6618 } 6619 } else if (DebugFlags.WEB_VIEW) { 6620 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6621 } 6622 } else if (DebugFlags.WEB_VIEW) { 6623 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6624 + " current=" + currentVelocity 6625 + " vx=" + vx + " vy=" + vy 6626 + " maxX=" + maxX + " maxY=" + maxY 6627 + " scrollX=" + scrollX + " scrollY=" + scrollY 6628 + " layer=" + mScrollingLayer); 6629 } 6630 6631 // Allow sloppy flings without overscrolling at the edges. 6632 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6633 vx = 0; 6634 } 6635 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6636 vy = 0; 6637 } 6638 6639 if (overscrollDistance < overflingDistance) { 6640 if ((vx > 0 && scrollX == -overscrollDistance) || 6641 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6642 vx = 0; 6643 } 6644 if ((vy > 0 && scrollY == -overscrollDistance) || 6645 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6646 vy = 0; 6647 } 6648 } 6649 6650 mLastVelX = vx; 6651 mLastVelY = vy; 6652 mLastVelocity = velocity; 6653 6654 // no horizontal overscroll if the content just fits 6655 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6656 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6657 // Duration is calculated based on velocity. With range boundaries and overscroll 6658 // we may not know how long the final animation will take. (Hence the deprecation 6659 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6660 // resumes during this effect we will take a performance hit. See computeScroll; 6661 // we resume webcore there when the animation is finished. 6662 final int time = mScroller.getDuration(); 6663 6664 // Suppress scrollbars for layer scrolling. 6665 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6666 awakenScrollBars(time); 6667 } 6668 6669 invalidate(); 6670 } 6671 6672 /** 6673 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6674 * in charge of installing this view to the view hierarchy. This view will 6675 * become visible when the user starts scrolling via touch and fade away if 6676 * the user does not interact with it. 6677 * <p/> 6678 * API version 3 introduces a built-in zoom mechanism that is shown 6679 * automatically by the MapView. This is the preferred approach for 6680 * showing the zoom UI. 6681 * 6682 * @deprecated The built-in zoom mechanism is preferred, see 6683 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6684 */ 6685 @Deprecated 6686 public View getZoomControls() { 6687 if (!getSettings().supportZoom()) { 6688 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6689 return null; 6690 } 6691 return mZoomManager.getExternalZoomPicker(); 6692 } 6693 6694 void dismissZoomControl() { 6695 mZoomManager.dismissZoomPicker(); 6696 } 6697 6698 float getDefaultZoomScale() { 6699 return mZoomManager.getDefaultScale(); 6700 } 6701 6702 /** 6703 * @return TRUE if the WebView can be zoomed in. 6704 */ 6705 public boolean canZoomIn() { 6706 return mZoomManager.canZoomIn(); 6707 } 6708 6709 /** 6710 * @return TRUE if the WebView can be zoomed out. 6711 */ 6712 public boolean canZoomOut() { 6713 return mZoomManager.canZoomOut(); 6714 } 6715 6716 /** 6717 * Perform zoom in in the webview 6718 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6719 */ 6720 public boolean zoomIn() { 6721 return mZoomManager.zoomIn(); 6722 } 6723 6724 /** 6725 * Perform zoom out in the webview 6726 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6727 */ 6728 public boolean zoomOut() { 6729 return mZoomManager.zoomOut(); 6730 } 6731 6732 private void updateSelection() { 6733 if (mNativeClass == 0) { 6734 return; 6735 } 6736 // mLastTouchX and mLastTouchY are the point in the current viewport 6737 int contentX = viewToContentX(mLastTouchX + mScrollX); 6738 int contentY = viewToContentY(mLastTouchY + mScrollY); 6739 int slop = viewToContentDimension(mNavSlop); 6740 Rect rect = new Rect(contentX - slop, contentY - slop, 6741 contentX + slop, contentY + slop); 6742 nativeSelectBestAt(rect); 6743 mInitialHitTestResult = hitTestResult(null); 6744 } 6745 6746 /** 6747 * Scroll the focused text field to match the WebTextView 6748 * @param xPercent New x position of the WebTextView from 0 to 1. 6749 */ 6750 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6751 if (!inEditingMode() || mWebViewCore == null) { 6752 return; 6753 } 6754 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6755 new Float(xPercent)); 6756 } 6757 6758 /** 6759 * Scroll the focused textarea vertically to match the WebTextView 6760 * @param y New y position of the WebTextView in view coordinates 6761 */ 6762 /* package */ void scrollFocusedTextInputY(int y) { 6763 if (!inEditingMode() || mWebViewCore == null) { 6764 return; 6765 } 6766 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6767 } 6768 6769 /** 6770 * Set our starting point and time for a drag from the WebTextView. 6771 */ 6772 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6773 if (!inEditingMode()) { 6774 return; 6775 } 6776 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6777 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6778 mLastTouchTime = eventTime; 6779 if (!mScroller.isFinished()) { 6780 abortAnimation(); 6781 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6782 } 6783 mSnapScrollMode = SNAP_NONE; 6784 mVelocityTracker = VelocityTracker.obtain(); 6785 mTouchMode = TOUCH_DRAG_START_MODE; 6786 } 6787 6788 /** 6789 * Given a motion event from the WebTextView, set its location to our 6790 * coordinates, and handle the event. 6791 */ 6792 /*package*/ boolean textFieldDrag(MotionEvent event) { 6793 if (!inEditingMode()) { 6794 return false; 6795 } 6796 mDragFromTextInput = true; 6797 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6798 (float) (mWebTextView.getTop() - mScrollY)); 6799 boolean result = onTouchEvent(event); 6800 mDragFromTextInput = false; 6801 return result; 6802 } 6803 6804 /** 6805 * Due a touch up from a WebTextView. This will be handled by webkit to 6806 * change the selection. 6807 * @param event MotionEvent in the WebTextView's coordinates. 6808 */ 6809 /*package*/ void touchUpOnTextField(MotionEvent event) { 6810 if (!inEditingMode()) { 6811 return; 6812 } 6813 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6814 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6815 int slop = viewToContentDimension(mNavSlop); 6816 nativeMotionUp(x, y, slop); 6817 } 6818 6819 /** 6820 * Called when pressing the center key or trackball on a textfield. 6821 */ 6822 /*package*/ void centerKeyPressOnTextField() { 6823 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6824 nativeCursorNodePointer()); 6825 } 6826 6827 private void doShortPress() { 6828 if (mNativeClass == 0) { 6829 return; 6830 } 6831 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6832 return; 6833 } 6834 mTouchMode = TOUCH_DONE_MODE; 6835 switchOutDrawHistory(); 6836 // mLastTouchX and mLastTouchY are the point in the current viewport 6837 int contentX = viewToContentX(mLastTouchX + mScrollX); 6838 int contentY = viewToContentY(mLastTouchY + mScrollY); 6839 int slop = viewToContentDimension(mNavSlop); 6840 if (getSettings().supportTouchOnly()) { 6841 removeTouchHighlight(false); 6842 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6843 // use "0" as generation id to inform WebKit to use the same x/y as 6844 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6845 touchUpData.mMoveGeneration = 0; 6846 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6847 } else if (nativePointInNavCache(contentX, contentY, slop)) { 6848 WebViewCore.MotionUpData motionUpData = new WebViewCore 6849 .MotionUpData(); 6850 motionUpData.mFrame = nativeCacheHitFramePointer(); 6851 motionUpData.mNode = nativeCacheHitNodePointer(); 6852 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6853 motionUpData.mX = contentX; 6854 motionUpData.mY = contentY; 6855 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6856 motionUpData); 6857 } else { 6858 doMotionUp(contentX, contentY); 6859 } 6860 } 6861 6862 private void doMotionUp(int contentX, int contentY) { 6863 int slop = viewToContentDimension(mNavSlop); 6864 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 6865 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6866 } 6867 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6868 playSoundEffect(SoundEffectConstants.CLICK); 6869 } 6870 } 6871 6872 /** 6873 * Returns plugin bounds if x/y in content coordinates corresponds to a 6874 * plugin. Otherwise a NULL rectangle is returned. 6875 */ 6876 Rect getPluginBounds(int x, int y) { 6877 int slop = viewToContentDimension(mNavSlop); 6878 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 6879 return nativeCacheHitNodeBounds(); 6880 } else { 6881 return null; 6882 } 6883 } 6884 6885 /* 6886 * Return true if the rect (e.g. plugin) is fully visible and maximized 6887 * inside the WebView. 6888 */ 6889 boolean isRectFitOnScreen(Rect rect) { 6890 final int rectWidth = rect.width(); 6891 final int rectHeight = rect.height(); 6892 final int viewWidth = getViewWidth(); 6893 final int viewHeight = getViewHeightWithTitle(); 6894 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6895 scale = mZoomManager.computeScaleWithLimits(scale); 6896 return !mZoomManager.willScaleTriggerZoom(scale) 6897 && contentToViewX(rect.left) >= mScrollX 6898 && contentToViewX(rect.right) <= mScrollX + viewWidth 6899 && contentToViewY(rect.top) >= mScrollY 6900 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6901 } 6902 6903 /* 6904 * Maximize and center the rectangle, specified in the document coordinate 6905 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6906 * animated scroll to center it. If the zoom needs to be changed, find the 6907 * zoom center and do a smooth zoom transition. The rect is in document 6908 * coordinates 6909 */ 6910 void centerFitRect(Rect rect) { 6911 final int rectWidth = rect.width(); 6912 final int rectHeight = rect.height(); 6913 final int viewWidth = getViewWidth(); 6914 final int viewHeight = getViewHeightWithTitle(); 6915 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6916 / rectHeight); 6917 scale = mZoomManager.computeScaleWithLimits(scale); 6918 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6919 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6920 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6921 true, 0); 6922 } else { 6923 float actualScale = mZoomManager.getScale(); 6924 float oldScreenX = rect.left * actualScale - mScrollX; 6925 float rectViewX = rect.left * scale; 6926 float rectViewWidth = rectWidth * scale; 6927 float newMaxWidth = mContentWidth * scale; 6928 float newScreenX = (viewWidth - rectViewWidth) / 2; 6929 // pin the newX to the WebView 6930 if (newScreenX > rectViewX) { 6931 newScreenX = rectViewX; 6932 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6933 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6934 } 6935 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6936 / (scale - actualScale); 6937 float oldScreenY = rect.top * actualScale + getTitleHeight() 6938 - mScrollY; 6939 float rectViewY = rect.top * scale + getTitleHeight(); 6940 float rectViewHeight = rectHeight * scale; 6941 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6942 float newScreenY = (viewHeight - rectViewHeight) / 2; 6943 // pin the newY to the WebView 6944 if (newScreenY > rectViewY) { 6945 newScreenY = rectViewY; 6946 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6947 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6948 } 6949 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6950 / (scale - actualScale); 6951 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6952 mZoomManager.startZoomAnimation(scale, false); 6953 } 6954 } 6955 6956 // Called by JNI to handle a touch on a node representing an email address, 6957 // address, or phone number 6958 private void overrideLoading(String url) { 6959 mCallbackProxy.uiOverrideUrlLoading(url); 6960 } 6961 6962 @Override 6963 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6964 // FIXME: If a subwindow is showing find, and the user touches the 6965 // background window, it can steal focus. 6966 if (mFindIsUp) return false; 6967 boolean result = false; 6968 if (inEditingMode()) { 6969 result = mWebTextView.requestFocus(direction, 6970 previouslyFocusedRect); 6971 } else { 6972 result = super.requestFocus(direction, previouslyFocusedRect); 6973 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6974 // For cases such as GMail, where we gain focus from a direction, 6975 // we want to move to the first available link. 6976 // FIXME: If there are no visible links, we may not want to 6977 int fakeKeyDirection = 0; 6978 switch(direction) { 6979 case View.FOCUS_UP: 6980 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6981 break; 6982 case View.FOCUS_DOWN: 6983 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6984 break; 6985 case View.FOCUS_LEFT: 6986 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6987 break; 6988 case View.FOCUS_RIGHT: 6989 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6990 break; 6991 default: 6992 return result; 6993 } 6994 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6995 navHandledKey(fakeKeyDirection, 1, true, 0); 6996 } 6997 } 6998 } 6999 return result; 7000 } 7001 7002 @Override 7003 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 7004 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 7005 7006 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 7007 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 7008 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7009 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7010 7011 int measuredHeight = heightSize; 7012 int measuredWidth = widthSize; 7013 7014 // Grab the content size from WebViewCore. 7015 int contentHeight = contentToViewDimension(mContentHeight); 7016 int contentWidth = contentToViewDimension(mContentWidth); 7017 7018// Log.d(LOGTAG, "------- measure " + heightMode); 7019 7020 if (heightMode != MeasureSpec.EXACTLY) { 7021 mHeightCanMeasure = true; 7022 measuredHeight = contentHeight; 7023 if (heightMode == MeasureSpec.AT_MOST) { 7024 // If we are larger than the AT_MOST height, then our height can 7025 // no longer be measured and we should scroll internally. 7026 if (measuredHeight > heightSize) { 7027 measuredHeight = heightSize; 7028 mHeightCanMeasure = false; 7029 } else if (measuredHeight < heightSize) { 7030 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7031 } 7032 } 7033 } else { 7034 mHeightCanMeasure = false; 7035 } 7036 if (mNativeClass != 0) { 7037 nativeSetHeightCanMeasure(mHeightCanMeasure); 7038 } 7039 // For the width, always use the given size unless unspecified. 7040 if (widthMode == MeasureSpec.UNSPECIFIED) { 7041 mWidthCanMeasure = true; 7042 measuredWidth = contentWidth; 7043 } else { 7044 if (measuredWidth < contentWidth) { 7045 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7046 } 7047 mWidthCanMeasure = false; 7048 } 7049 7050 synchronized (this) { 7051 setMeasuredDimension(measuredWidth, measuredHeight); 7052 } 7053 } 7054 7055 @Override 7056 public boolean requestChildRectangleOnScreen(View child, 7057 Rect rect, 7058 boolean immediate) { 7059 if (mNativeClass == 0) { 7060 return false; 7061 } 7062 // don't scroll while in zoom animation. When it is done, we will adjust 7063 // the necessary components (e.g., WebTextView if it is in editing mode) 7064 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7065 return false; 7066 } 7067 7068 rect.offset(child.getLeft() - child.getScrollX(), 7069 child.getTop() - child.getScrollY()); 7070 7071 Rect content = new Rect(viewToContentX(mScrollX), 7072 viewToContentY(mScrollY), 7073 viewToContentX(mScrollX + getWidth() 7074 - getVerticalScrollbarWidth()), 7075 viewToContentY(mScrollY + getViewHeightWithTitle())); 7076 content = nativeSubtractLayers(content); 7077 int screenTop = contentToViewY(content.top); 7078 int screenBottom = contentToViewY(content.bottom); 7079 int height = screenBottom - screenTop; 7080 int scrollYDelta = 0; 7081 7082 if (rect.bottom > screenBottom) { 7083 int oneThirdOfScreenHeight = height / 3; 7084 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7085 // If the rectangle is too tall to fit in the bottom two thirds 7086 // of the screen, place it at the top. 7087 scrollYDelta = rect.top - screenTop; 7088 } else { 7089 // If the rectangle will still fit on screen, we want its 7090 // top to be in the top third of the screen. 7091 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7092 } 7093 } else if (rect.top < screenTop) { 7094 scrollYDelta = rect.top - screenTop; 7095 } 7096 7097 int screenLeft = contentToViewX(content.left); 7098 int screenRight = contentToViewX(content.right); 7099 int width = screenRight - screenLeft; 7100 int scrollXDelta = 0; 7101 7102 if (rect.right > screenRight && rect.left > screenLeft) { 7103 if (rect.width() > width) { 7104 scrollXDelta += (rect.left - screenLeft); 7105 } else { 7106 scrollXDelta += (rect.right - screenRight); 7107 } 7108 } else if (rect.left < screenLeft) { 7109 scrollXDelta -= (screenLeft - rect.left); 7110 } 7111 7112 if ((scrollYDelta | scrollXDelta) != 0) { 7113 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7114 } 7115 7116 return false; 7117 } 7118 7119 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7120 String replace, int newStart, int newEnd) { 7121 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7122 arg.mReplace = replace; 7123 arg.mNewStart = newStart; 7124 arg.mNewEnd = newEnd; 7125 mTextGeneration++; 7126 arg.mTextGeneration = mTextGeneration; 7127 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7128 } 7129 7130 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7131 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7132 arg.mEvent = event; 7133 arg.mCurrentText = currentText; 7134 // Increase our text generation number, and pass it to webcore thread 7135 mTextGeneration++; 7136 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7137 // WebKit's document state is not saved until about to leave the page. 7138 // To make sure the host application, like Browser, has the up to date 7139 // document state when it goes to background, we force to save the 7140 // document state. 7141 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7142 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7143 cursorData(), 1000); 7144 } 7145 7146 /* package */ synchronized WebViewCore getWebViewCore() { 7147 return mWebViewCore; 7148 } 7149 7150 /** 7151 * Used only by TouchEventQueue to store pending touch events. 7152 */ 7153 private static class QueuedTouch { 7154 long mSequence; 7155 MotionEvent mEvent; // Optional 7156 TouchEventData mTed; // Optional 7157 7158 QueuedTouch mNext; 7159 7160 public QueuedTouch set(TouchEventData ted) { 7161 mSequence = ted.mSequence; 7162 mTed = ted; 7163 mEvent = null; 7164 mNext = null; 7165 return this; 7166 } 7167 7168 public QueuedTouch set(MotionEvent ev, long sequence) { 7169 mEvent = MotionEvent.obtain(ev); 7170 mSequence = sequence; 7171 mTed = null; 7172 mNext = null; 7173 return this; 7174 } 7175 7176 public QueuedTouch add(QueuedTouch other) { 7177 if (other.mSequence < mSequence) { 7178 other.mNext = this; 7179 return other; 7180 } 7181 7182 QueuedTouch insertAt = this; 7183 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7184 insertAt = insertAt.mNext; 7185 } 7186 other.mNext = insertAt.mNext; 7187 insertAt.mNext = other; 7188 return this; 7189 } 7190 } 7191 7192 /** 7193 * WebView handles touch events asynchronously since some events must be passed to WebKit 7194 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7195 * of which path they take to ensure that no events are ever processed out of order 7196 * by WebView. 7197 */ 7198 private class TouchEventQueue { 7199 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7200 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7201 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7202 7203 // Events waiting to be processed. 7204 private QueuedTouch mTouchEventQueue; 7205 7206 // Known events that are waiting on a response before being enqueued. 7207 private QueuedTouch mPreQueue; 7208 7209 // Pool of QueuedTouch objects saved for later use. 7210 private QueuedTouch mQueuedTouchRecycleBin; 7211 private int mQueuedTouchRecycleCount; 7212 7213 private long mLastEventTime = Long.MAX_VALUE; 7214 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7215 7216 // milliseconds until we abandon hope of getting all of a previous gesture 7217 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7218 7219 private QueuedTouch obtainQueuedTouch() { 7220 if (mQueuedTouchRecycleBin != null) { 7221 QueuedTouch result = mQueuedTouchRecycleBin; 7222 mQueuedTouchRecycleBin = result.mNext; 7223 mQueuedTouchRecycleCount--; 7224 return result; 7225 } 7226 return new QueuedTouch(); 7227 } 7228 7229 /** 7230 * Allow events with any currently missing sequence numbers to be skipped in processing. 7231 */ 7232 public void ignoreCurrentlyMissingEvents() { 7233 mIgnoreUntilSequence = mNextTouchSequence; 7234 7235 // Run any events we have available and complete, pre-queued or otherwise. 7236 runQueuedAndPreQueuedEvents(); 7237 } 7238 7239 private void runQueuedAndPreQueuedEvents() { 7240 QueuedTouch qd = mPreQueue; 7241 boolean fromPreQueue = true; 7242 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7243 handleQueuedTouch(qd); 7244 QueuedTouch recycleMe = qd; 7245 if (fromPreQueue) { 7246 mPreQueue = qd.mNext; 7247 } else { 7248 mTouchEventQueue = qd.mNext; 7249 } 7250 recycleQueuedTouch(recycleMe); 7251 mLastHandledTouchSequence++; 7252 7253 long nextPre = mPreQueue != null ? mPreQueue.mSequence : Long.MAX_VALUE; 7254 long nextQueued = mTouchEventQueue != null ? 7255 mTouchEventQueue.mSequence : Long.MAX_VALUE; 7256 fromPreQueue = nextPre < nextQueued; 7257 qd = fromPreQueue ? mPreQueue : mTouchEventQueue; 7258 } 7259 } 7260 7261 /** 7262 * Add a TouchEventData to the pre-queue. 7263 * 7264 * An event in the pre-queue is an event that we know about that 7265 * has been sent to webkit, but that we haven't received back and 7266 * enqueued into the normal touch queue yet. If webkit ever times 7267 * out and we need to ignore currently missing events, we'll run 7268 * events from the pre-queue to patch the holes. 7269 * 7270 * @param ted TouchEventData to pre-queue 7271 */ 7272 public void preQueueTouchEventData(TouchEventData ted) { 7273 QueuedTouch newTouch = obtainQueuedTouch().set(ted); 7274 if (mPreQueue == null) { 7275 mPreQueue = newTouch; 7276 } else { 7277 QueuedTouch insertionPoint = mPreQueue; 7278 while (insertionPoint.mNext != null && 7279 insertionPoint.mNext.mSequence < newTouch.mSequence) { 7280 insertionPoint = insertionPoint.mNext; 7281 } 7282 newTouch.mNext = insertionPoint.mNext; 7283 insertionPoint.mNext = newTouch; 7284 } 7285 } 7286 7287 private void recycleQueuedTouch(QueuedTouch qd) { 7288 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7289 qd.mNext = mQueuedTouchRecycleBin; 7290 mQueuedTouchRecycleBin = qd; 7291 mQueuedTouchRecycleCount++; 7292 } 7293 } 7294 7295 /** 7296 * Reset the touch event queue. This will dump any pending events 7297 * and reset the sequence numbering. 7298 */ 7299 public void reset() { 7300 mNextTouchSequence = Long.MIN_VALUE + 1; 7301 mLastHandledTouchSequence = Long.MIN_VALUE; 7302 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7303 while (mTouchEventQueue != null) { 7304 QueuedTouch recycleMe = mTouchEventQueue; 7305 mTouchEventQueue = mTouchEventQueue.mNext; 7306 recycleQueuedTouch(recycleMe); 7307 } 7308 while (mPreQueue != null) { 7309 QueuedTouch recycleMe = mPreQueue; 7310 mPreQueue = mPreQueue.mNext; 7311 recycleQueuedTouch(recycleMe); 7312 } 7313 } 7314 7315 /** 7316 * Return the next valid sequence number for tagging incoming touch events. 7317 * @return The next touch event sequence number 7318 */ 7319 public long nextTouchSequence() { 7320 return mNextTouchSequence++; 7321 } 7322 7323 /** 7324 * Enqueue a touch event in the form of TouchEventData. 7325 * The sequence number will be read from the mSequence field of the argument. 7326 * 7327 * If the touch event's sequence number is the next in line to be processed, it will 7328 * be handled before this method returns. Any subsequent events that have already 7329 * been queued will also be processed in their proper order. 7330 * 7331 * @param ted Touch data to be processed in order. 7332 * @return true if the event was processed before returning, false if it was just enqueued. 7333 */ 7334 public boolean enqueueTouchEvent(TouchEventData ted) { 7335 // Remove from the pre-queue if present 7336 QueuedTouch preQueue = mPreQueue; 7337 if (preQueue != null) { 7338 // On exiting this block, preQueue is set to the pre-queued QueuedTouch object 7339 // if it was present in the pre-queue, and removed from the pre-queue itself. 7340 if (preQueue.mSequence == ted.mSequence) { 7341 mPreQueue = preQueue.mNext; 7342 } else { 7343 QueuedTouch prev = preQueue; 7344 preQueue = null; 7345 while (prev.mNext != null) { 7346 if (prev.mNext.mSequence == ted.mSequence) { 7347 preQueue = prev.mNext; 7348 prev.mNext = preQueue.mNext; 7349 break; 7350 } else { 7351 prev = prev.mNext; 7352 } 7353 } 7354 } 7355 } 7356 7357 if (ted.mSequence < mLastHandledTouchSequence) { 7358 // Stale event and we already moved on; drop it. (Should not be common.) 7359 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7360 " received from webcore; ignoring"); 7361 return false; 7362 } 7363 7364 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7365 return false; 7366 } 7367 7368 // dropStaleGestures above might have fast-forwarded us to 7369 // an event we have already. 7370 runNextQueuedEvents(); 7371 7372 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7373 if (preQueue != null) { 7374 recycleQueuedTouch(preQueue); 7375 preQueue = null; 7376 } 7377 handleQueuedTouchEventData(ted); 7378 7379 mLastHandledTouchSequence++; 7380 7381 // Do we have any more? Run them if so. 7382 runNextQueuedEvents(); 7383 } else { 7384 // Reuse the pre-queued object if we had it. 7385 QueuedTouch qd = preQueue != null ? preQueue : obtainQueuedTouch().set(ted); 7386 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7387 } 7388 return true; 7389 } 7390 7391 /** 7392 * Enqueue a touch event in the form of a MotionEvent from the framework. 7393 * 7394 * If the touch event's sequence number is the next in line to be processed, it will 7395 * be handled before this method returns. Any subsequent events that have already 7396 * been queued will also be processed in their proper order. 7397 * 7398 * @param ev MotionEvent to be processed in order 7399 */ 7400 public void enqueueTouchEvent(MotionEvent ev) { 7401 final long sequence = nextTouchSequence(); 7402 7403 if (dropStaleGestures(ev, sequence)) { 7404 return; 7405 } 7406 7407 // dropStaleGestures above might have fast-forwarded us to 7408 // an event we have already. 7409 runNextQueuedEvents(); 7410 7411 if (mLastHandledTouchSequence + 1 == sequence) { 7412 handleQueuedMotionEvent(ev); 7413 7414 mLastHandledTouchSequence++; 7415 7416 // Do we have any more? Run them if so. 7417 runNextQueuedEvents(); 7418 } else { 7419 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7420 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7421 } 7422 } 7423 7424 private void runNextQueuedEvents() { 7425 QueuedTouch qd = mTouchEventQueue; 7426 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7427 handleQueuedTouch(qd); 7428 QueuedTouch recycleMe = qd; 7429 qd = qd.mNext; 7430 recycleQueuedTouch(recycleMe); 7431 mLastHandledTouchSequence++; 7432 } 7433 mTouchEventQueue = qd; 7434 } 7435 7436 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7437 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7438 // This is to make sure that we don't attempt to process a tap 7439 // or long press when webkit takes too long to get back to us. 7440 // The movement will be properly confirmed when we process the 7441 // enqueued event later. 7442 final int dx = Math.round(ev.getX()) - mLastTouchX; 7443 final int dy = Math.round(ev.getY()) - mLastTouchY; 7444 if (dx * dx + dy * dy > mTouchSlopSquare) { 7445 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7446 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7447 } 7448 } 7449 7450 if (mTouchEventQueue == null) { 7451 return sequence <= mLastHandledTouchSequence; 7452 } 7453 7454 // If we have a new down event and it's been a while since the last event 7455 // we saw, catch up as best we can and keep going. 7456 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 7457 long eventTime = ev.getEventTime(); 7458 long lastHandledEventTime = mLastEventTime; 7459 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 7460 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7461 "Catching up."); 7462 runQueuedAndPreQueuedEvents(); 7463 7464 // Drop leftovers that we truly don't have. 7465 QueuedTouch qd = mTouchEventQueue; 7466 while (qd != null && qd.mSequence < sequence) { 7467 QueuedTouch recycleMe = qd; 7468 qd = qd.mNext; 7469 recycleQueuedTouch(recycleMe); 7470 } 7471 mTouchEventQueue = qd; 7472 mLastHandledTouchSequence = sequence - 1; 7473 } 7474 } 7475 7476 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 7477 QueuedTouch qd = mTouchEventQueue; 7478 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7479 QueuedTouch recycleMe = qd; 7480 qd = qd.mNext; 7481 recycleQueuedTouch(recycleMe); 7482 } 7483 mTouchEventQueue = qd; 7484 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 7485 } 7486 7487 if (mPreQueue != null) { 7488 // Drop stale prequeued events 7489 QueuedTouch qd = mPreQueue; 7490 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7491 QueuedTouch recycleMe = qd; 7492 qd = qd.mNext; 7493 recycleQueuedTouch(recycleMe); 7494 } 7495 mPreQueue = qd; 7496 } 7497 7498 return sequence <= mLastHandledTouchSequence; 7499 } 7500 7501 private void handleQueuedTouch(QueuedTouch qt) { 7502 if (qt.mTed != null) { 7503 handleQueuedTouchEventData(qt.mTed); 7504 } else { 7505 handleQueuedMotionEvent(qt.mEvent); 7506 qt.mEvent.recycle(); 7507 } 7508 } 7509 7510 private void handleQueuedMotionEvent(MotionEvent ev) { 7511 mLastEventTime = ev.getEventTime(); 7512 int action = ev.getActionMasked(); 7513 if (ev.getPointerCount() > 1) { // Multi-touch 7514 handleMultiTouchInWebView(ev); 7515 } else { 7516 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 7517 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 7518 // ScaleGestureDetector needs a consistent event stream to operate properly. 7519 // It won't take any action with fewer than two pointers, but it needs to 7520 // update internal bookkeeping state. 7521 detector.onTouchEvent(ev); 7522 } 7523 7524 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 7525 } 7526 } 7527 7528 private void handleQueuedTouchEventData(TouchEventData ted) { 7529 if (ted.mMotionEvent != null) { 7530 mLastEventTime = ted.mMotionEvent.getEventTime(); 7531 } 7532 if (!ted.mReprocess) { 7533 if (ted.mAction == MotionEvent.ACTION_DOWN 7534 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7535 // if prevent default is called from WebCore, UI 7536 // will not handle the rest of the touch events any 7537 // more. 7538 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7539 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7540 } else if (ted.mAction == MotionEvent.ACTION_MOVE 7541 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7542 // the return for the first ACTION_MOVE will decide 7543 // whether UI will handle touch or not. Currently no 7544 // support for alternating prevent default 7545 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7546 : PREVENT_DEFAULT_NO; 7547 } 7548 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7549 mTouchHighlightRegion.setEmpty(); 7550 } 7551 } else { 7552 if (ted.mPoints.length > 1) { // multi-touch 7553 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 7554 mPreventDefault = PREVENT_DEFAULT_NO; 7555 handleMultiTouchInWebView(ted.mMotionEvent); 7556 } else { 7557 mPreventDefault = PREVENT_DEFAULT_YES; 7558 } 7559 return; 7560 } 7561 7562 // prevent default is not called in WebCore, so the 7563 // message needs to be reprocessed in UI 7564 if (!ted.mNativeResult) { 7565 // Following is for single touch. 7566 switch (ted.mAction) { 7567 case MotionEvent.ACTION_DOWN: 7568 mLastDeferTouchX = ted.mPointsInView[0].x; 7569 mLastDeferTouchY = ted.mPointsInView[0].y; 7570 mDeferTouchMode = TOUCH_INIT_MODE; 7571 break; 7572 case MotionEvent.ACTION_MOVE: { 7573 // no snapping in defer process 7574 int x = ted.mPointsInView[0].x; 7575 int y = ted.mPointsInView[0].y; 7576 7577 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7578 mDeferTouchMode = TOUCH_DRAG_MODE; 7579 mLastDeferTouchX = x; 7580 mLastDeferTouchY = y; 7581 startScrollingLayer(x, y); 7582 startDrag(); 7583 } 7584 int deltaX = pinLocX((int) (mScrollX 7585 + mLastDeferTouchX - x)) 7586 - mScrollX; 7587 int deltaY = pinLocY((int) (mScrollY 7588 + mLastDeferTouchY - y)) 7589 - mScrollY; 7590 doDrag(deltaX, deltaY); 7591 if (deltaX != 0) mLastDeferTouchX = x; 7592 if (deltaY != 0) mLastDeferTouchY = y; 7593 break; 7594 } 7595 case MotionEvent.ACTION_UP: 7596 case MotionEvent.ACTION_CANCEL: 7597 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7598 // no fling in defer process 7599 mScroller.springBack(mScrollX, mScrollY, 0, 7600 computeMaxScrollX(), 0, 7601 computeMaxScrollY()); 7602 invalidate(); 7603 WebViewCore.resumePriority(); 7604 WebViewCore.resumeUpdatePicture(mWebViewCore); 7605 } 7606 mDeferTouchMode = TOUCH_DONE_MODE; 7607 break; 7608 case WebViewCore.ACTION_DOUBLETAP: 7609 // doDoubleTap() needs mLastTouchX/Y as anchor 7610 mLastDeferTouchX = ted.mPointsInView[0].x; 7611 mLastDeferTouchY = ted.mPointsInView[0].y; 7612 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7613 mDeferTouchMode = TOUCH_DONE_MODE; 7614 break; 7615 case WebViewCore.ACTION_LONGPRESS: 7616 HitTestResult hitTest = getHitTestResult(); 7617 if (hitTest != null && hitTest.mType 7618 != HitTestResult.UNKNOWN_TYPE) { 7619 performLongClick(); 7620 } 7621 mDeferTouchMode = TOUCH_DONE_MODE; 7622 break; 7623 } 7624 } 7625 } 7626 } 7627 } 7628 7629 //------------------------------------------------------------------------- 7630 // Methods can be called from a separate thread, like WebViewCore 7631 // If it needs to call the View system, it has to send message. 7632 //------------------------------------------------------------------------- 7633 7634 /** 7635 * General handler to receive message coming from webkit thread 7636 */ 7637 class PrivateHandler extends Handler { 7638 @Override 7639 public void handleMessage(Message msg) { 7640 // exclude INVAL_RECT_MSG_ID since it is frequently output 7641 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7642 if (msg.what >= FIRST_PRIVATE_MSG_ID 7643 && msg.what <= LAST_PRIVATE_MSG_ID) { 7644 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7645 - FIRST_PRIVATE_MSG_ID]); 7646 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7647 && msg.what <= LAST_PACKAGE_MSG_ID) { 7648 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7649 - FIRST_PACKAGE_MSG_ID]); 7650 } else { 7651 Log.v(LOGTAG, Integer.toString(msg.what)); 7652 } 7653 } 7654 if (mWebViewCore == null) { 7655 // after WebView's destroy() is called, skip handling messages. 7656 return; 7657 } 7658 switch (msg.what) { 7659 case REMEMBER_PASSWORD: { 7660 mDatabase.setUsernamePassword( 7661 msg.getData().getString("host"), 7662 msg.getData().getString("username"), 7663 msg.getData().getString("password")); 7664 ((Message) msg.obj).sendToTarget(); 7665 break; 7666 } 7667 case NEVER_REMEMBER_PASSWORD: { 7668 mDatabase.setUsernamePassword( 7669 msg.getData().getString("host"), null, null); 7670 ((Message) msg.obj).sendToTarget(); 7671 break; 7672 } 7673 case PREVENT_DEFAULT_TIMEOUT: { 7674 // if timeout happens, cancel it so that it won't block UI 7675 // to continue handling touch events 7676 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7677 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7678 || (msg.arg1 == MotionEvent.ACTION_MOVE 7679 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7680 cancelWebCoreTouchEvent( 7681 viewToContentX(mLastTouchX + mScrollX), 7682 viewToContentY(mLastTouchY + mScrollY), 7683 true); 7684 } 7685 break; 7686 } 7687 case SCROLL_SELECT_TEXT: { 7688 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7689 mSentAutoScrollMessage = false; 7690 break; 7691 } 7692 if (mScrollingLayer == 0) { 7693 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7694 } else { 7695 mScrollingLayerRect.left += mAutoScrollX; 7696 mScrollingLayerRect.top += mAutoScrollY; 7697 nativeScrollLayer(mScrollingLayer, 7698 mScrollingLayerRect.left, 7699 mScrollingLayerRect.top); 7700 invalidate(); 7701 } 7702 sendEmptyMessageDelayed( 7703 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7704 break; 7705 } 7706 case SWITCH_TO_SHORTPRESS: { 7707 mInitialHitTestResult = null; // set by updateSelection() 7708 if (mTouchMode == TOUCH_INIT_MODE) { 7709 if (!getSettings().supportTouchOnly() 7710 && mPreventDefault != PREVENT_DEFAULT_YES) { 7711 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7712 updateSelection(); 7713 } else { 7714 // set to TOUCH_SHORTPRESS_MODE so that it won't 7715 // trigger double tap any more 7716 mTouchMode = TOUCH_SHORTPRESS_MODE; 7717 } 7718 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7719 mTouchMode = TOUCH_DONE_MODE; 7720 } 7721 break; 7722 } 7723 case SWITCH_TO_LONGPRESS: { 7724 if (getSettings().supportTouchOnly()) { 7725 removeTouchHighlight(false); 7726 } 7727 if (inFullScreenMode() || mDeferTouchProcess) { 7728 TouchEventData ted = new TouchEventData(); 7729 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7730 ted.mIds = new int[1]; 7731 ted.mIds[0] = 0; 7732 ted.mPoints = new Point[1]; 7733 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7734 viewToContentY(mLastTouchY + mScrollY)); 7735 ted.mPointsInView = new Point[1]; 7736 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 7737 // metaState for long press is tricky. Should it be the 7738 // state when the press started or when the press was 7739 // released? Or some intermediary key state? For 7740 // simplicity for now, we don't set it. 7741 ted.mMetaState = 0; 7742 ted.mReprocess = mDeferTouchProcess; 7743 ted.mNativeLayer = nativeScrollableLayer( 7744 ted.mPoints[0].x, ted.mPoints[0].y, 7745 ted.mNativeLayerRect, null); 7746 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7747 mTouchEventQueue.preQueueTouchEventData(ted); 7748 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7749 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7750 mTouchMode = TOUCH_DONE_MODE; 7751 performLongClick(); 7752 } 7753 break; 7754 } 7755 case RELEASE_SINGLE_TAP: { 7756 doShortPress(); 7757 break; 7758 } 7759 case SCROLL_TO_MSG_ID: { 7760 // arg1 = animate, arg2 = onlyIfImeIsShowing 7761 // obj = Point(x, y) 7762 if (msg.arg2 == 1) { 7763 // This scroll is intended to bring the textfield into 7764 // view, but is only necessary if the IME is showing 7765 InputMethodManager imm = InputMethodManager.peekInstance(); 7766 if (imm == null || !imm.isAcceptingText() 7767 || (!imm.isActive(WebView.this) && (!inEditingMode() 7768 || !imm.isActive(mWebTextView)))) { 7769 break; 7770 } 7771 } 7772 final Point p = (Point) msg.obj; 7773 if (msg.arg1 == 1) { 7774 spawnContentScrollTo(p.x, p.y); 7775 } else { 7776 setContentScrollTo(p.x, p.y); 7777 } 7778 break; 7779 } 7780 case UPDATE_ZOOM_RANGE: { 7781 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7782 // mScrollX contains the new minPrefWidth 7783 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7784 break; 7785 } 7786 case REPLACE_BASE_CONTENT: { 7787 nativeReplaceBaseContent(msg.arg1); 7788 break; 7789 } 7790 case NEW_PICTURE_MSG_ID: { 7791 // called for new content 7792 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7793 WebViewCore.ViewState viewState = draw.mViewState; 7794 boolean isPictureAfterFirstLayout = viewState != null; 7795 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 7796 getSettings().getShowVisualIndicator(), 7797 isPictureAfterFirstLayout); 7798 final Point viewSize = draw.mViewSize; 7799 if (isPictureAfterFirstLayout) { 7800 // Reset the last sent data here since dealing with new page. 7801 mLastWidthSent = 0; 7802 mZoomManager.onFirstLayout(draw); 7803 if (!mDrawHistory) { 7804 // Do not send the scroll event for this particular 7805 // scroll message. Note that a scroll event may 7806 // still be fired if the user scrolls before the 7807 // message can be handled. 7808 mSendScrollEvent = false; 7809 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7810 mSendScrollEvent = true; 7811 7812 // As we are on a new page, remove the WebTextView. This 7813 // is necessary for page loads driven by webkit, and in 7814 // particular when the user was on a password field, so 7815 // the WebTextView was visible. 7816 clearTextEntry(); 7817 } 7818 } 7819 7820 // We update the layout (i.e. request a layout from the 7821 // view system) if the last view size that we sent to 7822 // WebCore matches the view size of the picture we just 7823 // received in the fixed dimension. 7824 final boolean updateLayout = viewSize.x == mLastWidthSent 7825 && viewSize.y == mLastHeightSent; 7826 // Don't send scroll event for picture coming from webkit, 7827 // since the new picture may cause a scroll event to override 7828 // the saved history scroll position. 7829 mSendScrollEvent = false; 7830 recordNewContentSize(draw.mContentSize.x, 7831 draw.mContentSize.y, updateLayout); 7832 mSendScrollEvent = true; 7833 if (DebugFlags.WEB_VIEW) { 7834 Rect b = draw.mInvalRegion.getBounds(); 7835 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7836 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7837 } 7838 invalidateContentRect(draw.mInvalRegion.getBounds()); 7839 7840 if (mPictureListener != null) { 7841 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7842 } 7843 7844 // update the zoom information based on the new picture 7845 mZoomManager.onNewPicture(draw); 7846 7847 if (draw.mFocusSizeChanged && inEditingMode()) { 7848 mFocusSizeChanged = true; 7849 } 7850 if (isPictureAfterFirstLayout) { 7851 mViewManager.postReadyToDrawAll(); 7852 } 7853 break; 7854 } 7855 case WEBCORE_INITIALIZED_MSG_ID: 7856 // nativeCreate sets mNativeClass to a non-zero value 7857 String drawableDir = BrowserFrame.getRawResFilename( 7858 BrowserFrame.DRAWABLEDIR, mContext); 7859 AssetManager am = mContext.getAssets(); 7860 nativeCreate(msg.arg1, drawableDir, am); 7861 break; 7862 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7863 // Make sure that the textfield is currently focused 7864 // and representing the same node as the pointer. 7865 if (inEditingMode() && 7866 mWebTextView.isSameTextField(msg.arg1)) { 7867 if (msg.getData().getBoolean("password")) { 7868 Spannable text = (Spannable) mWebTextView.getText(); 7869 int start = Selection.getSelectionStart(text); 7870 int end = Selection.getSelectionEnd(text); 7871 mWebTextView.setInPassword(true); 7872 // Restore the selection, which may have been 7873 // ruined by setInPassword. 7874 Spannable pword = 7875 (Spannable) mWebTextView.getText(); 7876 Selection.setSelection(pword, start, end); 7877 // If the text entry has created more events, ignore 7878 // this one. 7879 } else if (msg.arg2 == mTextGeneration) { 7880 String text = (String) msg.obj; 7881 if (null == text) { 7882 text = ""; 7883 } 7884 mWebTextView.setTextAndKeepSelection(text); 7885 } 7886 } 7887 break; 7888 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7889 displaySoftKeyboard(true); 7890 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7891 case UPDATE_TEXT_SELECTION_MSG_ID: 7892 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7893 (WebViewCore.TextSelectionData) msg.obj); 7894 break; 7895 case FORM_DID_BLUR: 7896 if (inEditingMode() 7897 && mWebTextView.isSameTextField(msg.arg1)) { 7898 hideSoftKeyboard(); 7899 } 7900 break; 7901 case RETURN_LABEL: 7902 if (inEditingMode() 7903 && mWebTextView.isSameTextField(msg.arg1)) { 7904 mWebTextView.setHint((String) msg.obj); 7905 InputMethodManager imm 7906 = InputMethodManager.peekInstance(); 7907 // The hint is propagated to the IME in 7908 // onCreateInputConnection. If the IME is already 7909 // active, restart it so that its hint text is updated. 7910 if (imm != null && imm.isActive(mWebTextView)) { 7911 imm.restartInput(mWebTextView); 7912 } 7913 } 7914 break; 7915 case UNHANDLED_NAV_KEY: 7916 navHandledKey(msg.arg1, 1, false, 0); 7917 break; 7918 case UPDATE_TEXT_ENTRY_MSG_ID: 7919 // this is sent after finishing resize in WebViewCore. Make 7920 // sure the text edit box is still on the screen. 7921 if (inEditingMode() && nativeCursorIsTextInput()) { 7922 rebuildWebTextView(); 7923 } 7924 break; 7925 case CLEAR_TEXT_ENTRY: 7926 clearTextEntry(); 7927 break; 7928 case INVAL_RECT_MSG_ID: { 7929 Rect r = (Rect)msg.obj; 7930 if (r == null) { 7931 invalidate(); 7932 } else { 7933 // we need to scale r from content into view coords, 7934 // which viewInvalidate() does for us 7935 viewInvalidate(r.left, r.top, r.right, r.bottom); 7936 } 7937 break; 7938 } 7939 case REQUEST_FORM_DATA: 7940 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7941 if (mWebTextView.isSameTextField(msg.arg1)) { 7942 mWebTextView.setAdapterCustom(adapter); 7943 } 7944 break; 7945 case RESUME_WEBCORE_PRIORITY: 7946 WebViewCore.resumePriority(); 7947 WebViewCore.resumeUpdatePicture(mWebViewCore); 7948 break; 7949 7950 case LONG_PRESS_CENTER: 7951 // as this is shared by keydown and trackballdown, reset all 7952 // the states 7953 mGotCenterDown = false; 7954 mTrackballDown = false; 7955 performLongClick(); 7956 break; 7957 7958 case WEBCORE_NEED_TOUCH_EVENTS: 7959 mForwardTouchEvents = (msg.arg1 != 0); 7960 break; 7961 7962 case PREVENT_TOUCH_ID: 7963 if (inFullScreenMode()) { 7964 break; 7965 } 7966 TouchEventData ted = (TouchEventData) msg.obj; 7967 7968 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 7969 // WebCore is responding to us; remove pending timeout. 7970 // It will be re-posted when needed. 7971 removeMessages(PREVENT_DEFAULT_TIMEOUT); 7972 } 7973 break; 7974 7975 case REQUEST_KEYBOARD: 7976 if (msg.arg1 == 0) { 7977 hideSoftKeyboard(); 7978 } else { 7979 displaySoftKeyboard(false); 7980 } 7981 break; 7982 7983 case FIND_AGAIN: 7984 // Ignore if find has been dismissed. 7985 if (mFindIsUp && mFindCallback != null) { 7986 mFindCallback.findAll(); 7987 } 7988 break; 7989 7990 case DRAG_HELD_MOTIONLESS: 7991 mHeldMotionless = MOTIONLESS_TRUE; 7992 invalidate(); 7993 // fall through to keep scrollbars awake 7994 7995 case AWAKEN_SCROLL_BARS: 7996 if (mTouchMode == TOUCH_DRAG_MODE 7997 && mHeldMotionless == MOTIONLESS_TRUE) { 7998 awakenScrollBars(ViewConfiguration 7999 .getScrollDefaultDelay(), false); 8000 mPrivateHandler.sendMessageDelayed(mPrivateHandler 8001 .obtainMessage(AWAKEN_SCROLL_BARS), 8002 ViewConfiguration.getScrollDefaultDelay()); 8003 } 8004 break; 8005 8006 case DO_MOTION_UP: 8007 doMotionUp(msg.arg1, msg.arg2); 8008 break; 8009 8010 case SCREEN_ON: 8011 setKeepScreenOn(msg.arg1 == 1); 8012 break; 8013 8014 case ENTER_FULLSCREEN_VIDEO: 8015 int layerId = msg.arg1; 8016 8017 String url = (String) msg.obj; 8018 if (mHTML5VideoViewProxy != null) { 8019 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 8020 } 8021 break; 8022 8023 case SHOW_FULLSCREEN: { 8024 View view = (View) msg.obj; 8025 int npp = msg.arg1; 8026 8027 if (inFullScreenMode()) { 8028 Log.w(LOGTAG, "Should not have another full screen."); 8029 dismissFullScreenMode(); 8030 } 8031 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 8032 mFullScreenHolder.setContentView(view); 8033 mFullScreenHolder.setCancelable(false); 8034 mFullScreenHolder.setCanceledOnTouchOutside(false); 8035 mFullScreenHolder.show(); 8036 8037 break; 8038 } 8039 case HIDE_FULLSCREEN: 8040 dismissFullScreenMode(); 8041 break; 8042 8043 case DOM_FOCUS_CHANGED: 8044 if (inEditingMode()) { 8045 nativeClearCursor(); 8046 rebuildWebTextView(); 8047 } 8048 break; 8049 8050 case SHOW_RECT_MSG_ID: { 8051 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 8052 int x = mScrollX; 8053 int left = contentToViewX(data.mLeft); 8054 int width = contentToViewDimension(data.mWidth); 8055 int maxWidth = contentToViewDimension(data.mContentWidth); 8056 int viewWidth = getViewWidth(); 8057 if (width < viewWidth) { 8058 // center align 8059 x += left + width / 2 - mScrollX - viewWidth / 2; 8060 } else { 8061 x += (int) (left + data.mXPercentInDoc * width 8062 - mScrollX - data.mXPercentInView * viewWidth); 8063 } 8064 if (DebugFlags.WEB_VIEW) { 8065 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 8066 width + ",maxWidth=" + maxWidth + 8067 ",viewWidth=" + viewWidth + ",x=" 8068 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 8069 ",xPercentInView=" + data.mXPercentInView+ ")"); 8070 } 8071 // use the passing content width to cap x as the current 8072 // mContentWidth may not be updated yet 8073 x = Math.max(0, 8074 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 8075 int top = contentToViewY(data.mTop); 8076 int height = contentToViewDimension(data.mHeight); 8077 int maxHeight = contentToViewDimension(data.mContentHeight); 8078 int viewHeight = getViewHeight(); 8079 int y = (int) (top + data.mYPercentInDoc * height - 8080 data.mYPercentInView * viewHeight); 8081 if (DebugFlags.WEB_VIEW) { 8082 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 8083 height + ",maxHeight=" + maxHeight + 8084 ",viewHeight=" + viewHeight + ",y=" 8085 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 8086 ",yPercentInView=" + data.mYPercentInView+ ")"); 8087 } 8088 // use the passing content height to cap y as the current 8089 // mContentHeight may not be updated yet 8090 y = Math.max(0, 8091 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 8092 // We need to take into account the visible title height 8093 // when scrolling since y is an absolute view position. 8094 y = Math.max(0, y - getVisibleTitleHeight()); 8095 scrollTo(x, y); 8096 } 8097 break; 8098 8099 case CENTER_FIT_RECT: 8100 centerFitRect((Rect)msg.obj); 8101 break; 8102 8103 case SET_SCROLLBAR_MODES: 8104 mHorizontalScrollBarMode = msg.arg1; 8105 mVerticalScrollBarMode = msg.arg2; 8106 break; 8107 8108 case SELECTION_STRING_CHANGED: 8109 if (mAccessibilityInjector != null) { 8110 String selectionString = (String) msg.obj; 8111 mAccessibilityInjector.onSelectionStringChange(selectionString); 8112 } 8113 break; 8114 8115 case SET_TOUCH_HIGHLIGHT_RECTS: 8116 invalidate(mTouchHighlightRegion.getBounds()); 8117 mTouchHighlightRegion.setEmpty(); 8118 if (msg.obj != null) { 8119 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8120 for (Rect rect : rects) { 8121 Rect viewRect = contentToViewRect(rect); 8122 // some sites, like stories in nytimes.com, set 8123 // mouse event handler in the top div. It is not 8124 // user friendly to highlight the div if it covers 8125 // more than half of the screen. 8126 if (viewRect.width() < getWidth() >> 1 8127 || viewRect.height() < getHeight() >> 1) { 8128 mTouchHighlightRegion.union(viewRect); 8129 invalidate(viewRect); 8130 } else { 8131 Log.w(LOGTAG, "Skip the huge selection rect:" 8132 + viewRect); 8133 } 8134 } 8135 } 8136 break; 8137 8138 case SAVE_WEBARCHIVE_FINISHED: 8139 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8140 if (saveMessage.mCallback != null) { 8141 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8142 } 8143 break; 8144 8145 case SET_AUTOFILLABLE: 8146 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8147 if (mWebTextView != null) { 8148 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8149 rebuildWebTextView(); 8150 } 8151 break; 8152 8153 case AUTOFILL_COMPLETE: 8154 if (mWebTextView != null) { 8155 // Clear the WebTextView adapter when AutoFill finishes 8156 // so that the drop down gets cleared. 8157 mWebTextView.setAdapterCustom(null); 8158 } 8159 break; 8160 8161 case SELECT_AT: 8162 nativeSelectAt(msg.arg1, msg.arg2); 8163 break; 8164 8165 default: 8166 super.handleMessage(msg); 8167 break; 8168 } 8169 } 8170 } 8171 8172 /** 8173 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8174 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8175 */ 8176 private void updateTextSelectionFromMessage(int nodePointer, 8177 int textGeneration, WebViewCore.TextSelectionData data) { 8178 if (inEditingMode() 8179 && mWebTextView.isSameTextField(nodePointer) 8180 && textGeneration == mTextGeneration) { 8181 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8182 } 8183 } 8184 8185 // Class used to use a dropdown for a <select> element 8186 private class InvokeListBox implements Runnable { 8187 // Whether the listbox allows multiple selection. 8188 private boolean mMultiple; 8189 // Passed in to a list with multiple selection to tell 8190 // which items are selected. 8191 private int[] mSelectedArray; 8192 // Passed in to a list with single selection to tell 8193 // where the initial selection is. 8194 private int mSelection; 8195 8196 private Container[] mContainers; 8197 8198 // Need these to provide stable ids to my ArrayAdapter, 8199 // which normally does not have stable ids. (Bug 1250098) 8200 private class Container extends Object { 8201 /** 8202 * Possible values for mEnabled. Keep in sync with OptionStatus in 8203 * WebViewCore.cpp 8204 */ 8205 final static int OPTGROUP = -1; 8206 final static int OPTION_DISABLED = 0; 8207 final static int OPTION_ENABLED = 1; 8208 8209 String mString; 8210 int mEnabled; 8211 int mId; 8212 8213 @Override 8214 public String toString() { 8215 return mString; 8216 } 8217 } 8218 8219 /** 8220 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8221 * and allow filtering. 8222 */ 8223 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8224 public MyArrayListAdapter() { 8225 super(mContext, 8226 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8227 com.android.internal.R.layout.webview_select_singlechoice, 8228 mContainers); 8229 } 8230 8231 @Override 8232 public View getView(int position, View convertView, 8233 ViewGroup parent) { 8234 // Always pass in null so that we will get a new CheckedTextView 8235 // Otherwise, an item which was previously used as an <optgroup> 8236 // element (i.e. has no check), could get used as an <option> 8237 // element, which needs a checkbox/radio, but it would not have 8238 // one. 8239 convertView = super.getView(position, null, parent); 8240 Container c = item(position); 8241 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8242 // ListView does not draw dividers between disabled and 8243 // enabled elements. Use a LinearLayout to provide dividers 8244 LinearLayout layout = new LinearLayout(mContext); 8245 layout.setOrientation(LinearLayout.VERTICAL); 8246 if (position > 0) { 8247 View dividerTop = new View(mContext); 8248 dividerTop.setBackgroundResource( 8249 android.R.drawable.divider_horizontal_bright); 8250 layout.addView(dividerTop); 8251 } 8252 8253 if (Container.OPTGROUP == c.mEnabled) { 8254 // Currently select_dialog_multichoice uses CheckedTextViews. 8255 // If that changes, the class cast will no longer be valid. 8256 if (mMultiple) { 8257 Assert.assertTrue(convertView instanceof CheckedTextView); 8258 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8259 } 8260 } else { 8261 // c.mEnabled == Container.OPTION_DISABLED 8262 // Draw the disabled element in a disabled state. 8263 convertView.setEnabled(false); 8264 } 8265 8266 layout.addView(convertView); 8267 if (position < getCount() - 1) { 8268 View dividerBottom = new View(mContext); 8269 dividerBottom.setBackgroundResource( 8270 android.R.drawable.divider_horizontal_bright); 8271 layout.addView(dividerBottom); 8272 } 8273 return layout; 8274 } 8275 return convertView; 8276 } 8277 8278 @Override 8279 public boolean hasStableIds() { 8280 // AdapterView's onChanged method uses this to determine whether 8281 // to restore the old state. Return false so that the old (out 8282 // of date) state does not replace the new, valid state. 8283 return false; 8284 } 8285 8286 private Container item(int position) { 8287 if (position < 0 || position >= getCount()) { 8288 return null; 8289 } 8290 return (Container) getItem(position); 8291 } 8292 8293 @Override 8294 public long getItemId(int position) { 8295 Container item = item(position); 8296 if (item == null) { 8297 return -1; 8298 } 8299 return item.mId; 8300 } 8301 8302 @Override 8303 public boolean areAllItemsEnabled() { 8304 return false; 8305 } 8306 8307 @Override 8308 public boolean isEnabled(int position) { 8309 Container item = item(position); 8310 if (item == null) { 8311 return false; 8312 } 8313 return Container.OPTION_ENABLED == item.mEnabled; 8314 } 8315 } 8316 8317 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8318 mMultiple = true; 8319 mSelectedArray = selected; 8320 8321 int length = array.length; 8322 mContainers = new Container[length]; 8323 for (int i = 0; i < length; i++) { 8324 mContainers[i] = new Container(); 8325 mContainers[i].mString = array[i]; 8326 mContainers[i].mEnabled = enabled[i]; 8327 mContainers[i].mId = i; 8328 } 8329 } 8330 8331 private InvokeListBox(String[] array, int[] enabled, int selection) { 8332 mSelection = selection; 8333 mMultiple = false; 8334 8335 int length = array.length; 8336 mContainers = new Container[length]; 8337 for (int i = 0; i < length; i++) { 8338 mContainers[i] = new Container(); 8339 mContainers[i].mString = array[i]; 8340 mContainers[i].mEnabled = enabled[i]; 8341 mContainers[i].mId = i; 8342 } 8343 } 8344 8345 /* 8346 * Whenever the data set changes due to filtering, this class ensures 8347 * that the checked item remains checked. 8348 */ 8349 private class SingleDataSetObserver extends DataSetObserver { 8350 private long mCheckedId; 8351 private ListView mListView; 8352 private Adapter mAdapter; 8353 8354 /* 8355 * Create a new observer. 8356 * @param id The ID of the item to keep checked. 8357 * @param l ListView for getting and clearing the checked states 8358 * @param a Adapter for getting the IDs 8359 */ 8360 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8361 mCheckedId = id; 8362 mListView = l; 8363 mAdapter = a; 8364 } 8365 8366 @Override 8367 public void onChanged() { 8368 // The filter may have changed which item is checked. Find the 8369 // item that the ListView thinks is checked. 8370 int position = mListView.getCheckedItemPosition(); 8371 long id = mAdapter.getItemId(position); 8372 if (mCheckedId != id) { 8373 // Clear the ListView's idea of the checked item, since 8374 // it is incorrect 8375 mListView.clearChoices(); 8376 // Search for mCheckedId. If it is in the filtered list, 8377 // mark it as checked 8378 int count = mAdapter.getCount(); 8379 for (int i = 0; i < count; i++) { 8380 if (mAdapter.getItemId(i) == mCheckedId) { 8381 mListView.setItemChecked(i, true); 8382 break; 8383 } 8384 } 8385 } 8386 } 8387 } 8388 8389 public void run() { 8390 final ListView listView = (ListView) LayoutInflater.from(mContext) 8391 .inflate(com.android.internal.R.layout.select_dialog, null); 8392 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8393 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8394 .setView(listView).setCancelable(true) 8395 .setInverseBackgroundForced(true); 8396 8397 if (mMultiple) { 8398 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8399 public void onClick(DialogInterface dialog, int which) { 8400 mWebViewCore.sendMessage( 8401 EventHub.LISTBOX_CHOICES, 8402 adapter.getCount(), 0, 8403 listView.getCheckedItemPositions()); 8404 }}); 8405 b.setNegativeButton(android.R.string.cancel, 8406 new DialogInterface.OnClickListener() { 8407 public void onClick(DialogInterface dialog, int which) { 8408 mWebViewCore.sendMessage( 8409 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8410 }}); 8411 } 8412 mListBoxDialog = b.create(); 8413 listView.setAdapter(adapter); 8414 listView.setFocusableInTouchMode(true); 8415 // There is a bug (1250103) where the checks in a ListView with 8416 // multiple items selected are associated with the positions, not 8417 // the ids, so the items do not properly retain their checks when 8418 // filtered. Do not allow filtering on multiple lists until 8419 // that bug is fixed. 8420 8421 listView.setTextFilterEnabled(!mMultiple); 8422 if (mMultiple) { 8423 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8424 int length = mSelectedArray.length; 8425 for (int i = 0; i < length; i++) { 8426 listView.setItemChecked(mSelectedArray[i], true); 8427 } 8428 } else { 8429 listView.setOnItemClickListener(new OnItemClickListener() { 8430 public void onItemClick(AdapterView<?> parent, View v, 8431 int position, long id) { 8432 // Rather than sending the message right away, send it 8433 // after the page regains focus. 8434 mListBoxMessage = Message.obtain(null, 8435 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8436 mListBoxDialog.dismiss(); 8437 mListBoxDialog = null; 8438 } 8439 }); 8440 if (mSelection != -1) { 8441 listView.setSelection(mSelection); 8442 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8443 listView.setItemChecked(mSelection, true); 8444 DataSetObserver observer = new SingleDataSetObserver( 8445 adapter.getItemId(mSelection), listView, adapter); 8446 adapter.registerDataSetObserver(observer); 8447 } 8448 } 8449 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8450 public void onCancel(DialogInterface dialog) { 8451 mWebViewCore.sendMessage( 8452 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8453 mListBoxDialog = null; 8454 } 8455 }); 8456 mListBoxDialog.show(); 8457 } 8458 } 8459 8460 private Message mListBoxMessage; 8461 8462 /* 8463 * Request a dropdown menu for a listbox with multiple selection. 8464 * 8465 * @param array Labels for the listbox. 8466 * @param enabledArray State for each element in the list. See static 8467 * integers in Container class. 8468 * @param selectedArray Which positions are initally selected. 8469 */ 8470 void requestListBox(String[] array, int[] enabledArray, int[] 8471 selectedArray) { 8472 mPrivateHandler.post( 8473 new InvokeListBox(array, enabledArray, selectedArray)); 8474 } 8475 8476 /* 8477 * Request a dropdown menu for a listbox with single selection or a single 8478 * <select> element. 8479 * 8480 * @param array Labels for the listbox. 8481 * @param enabledArray State for each element in the list. See static 8482 * integers in Container class. 8483 * @param selection Which position is initally selected. 8484 */ 8485 void requestListBox(String[] array, int[] enabledArray, int selection) { 8486 mPrivateHandler.post( 8487 new InvokeListBox(array, enabledArray, selection)); 8488 } 8489 8490 // called by JNI 8491 private void sendMoveFocus(int frame, int node) { 8492 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8493 new WebViewCore.CursorData(frame, node, 0, 0)); 8494 } 8495 8496 // called by JNI 8497 private void sendMoveMouse(int frame, int node, int x, int y) { 8498 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8499 new WebViewCore.CursorData(frame, node, x, y)); 8500 } 8501 8502 /* 8503 * Send a mouse move event to the webcore thread. 8504 * 8505 * @param removeFocus Pass true to remove the WebTextView, if present. 8506 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8507 * called by JNI 8508 */ 8509 @SuppressWarnings("unused") 8510 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8511 if (removeFocus) { 8512 clearTextEntry(); 8513 } 8514 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8515 stopPaintingCaret ? 1 : 0, 0, 8516 cursorData()); 8517 } 8518 8519 /** 8520 * Called by JNI to send a message to the webcore thread that the user 8521 * touched the webpage. 8522 * @param touchGeneration Generation number of the touch, to ignore touches 8523 * after a new one has been generated. 8524 * @param frame Pointer to the frame holding the node that was touched. 8525 * @param node Pointer to the node touched. 8526 * @param x x-position of the touch. 8527 * @param y y-position of the touch. 8528 */ 8529 private void sendMotionUp(int touchGeneration, 8530 int frame, int node, int x, int y) { 8531 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8532 touchUpData.mMoveGeneration = touchGeneration; 8533 touchUpData.mFrame = frame; 8534 touchUpData.mNode = node; 8535 touchUpData.mX = x; 8536 touchUpData.mY = y; 8537 touchUpData.mNativeLayer = nativeScrollableLayer( 8538 x, y, touchUpData.mNativeLayerRect, null); 8539 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8540 } 8541 8542 8543 private int getScaledMaxXScroll() { 8544 int width; 8545 if (mHeightCanMeasure == false) { 8546 width = getViewWidth() / 4; 8547 } else { 8548 Rect visRect = new Rect(); 8549 calcOurVisibleRect(visRect); 8550 width = visRect.width() / 2; 8551 } 8552 // FIXME the divisor should be retrieved from somewhere 8553 return viewToContentX(width); 8554 } 8555 8556 private int getScaledMaxYScroll() { 8557 int height; 8558 if (mHeightCanMeasure == false) { 8559 height = getViewHeight() / 4; 8560 } else { 8561 Rect visRect = new Rect(); 8562 calcOurVisibleRect(visRect); 8563 height = visRect.height() / 2; 8564 } 8565 // FIXME the divisor should be retrieved from somewhere 8566 // the closest thing today is hard-coded into ScrollView.java 8567 // (from ScrollView.java, line 363) int maxJump = height/2; 8568 return Math.round(height * mZoomManager.getInvScale()); 8569 } 8570 8571 /** 8572 * Called by JNI to invalidate view 8573 */ 8574 private void viewInvalidate() { 8575 invalidate(); 8576 } 8577 8578 /** 8579 * Pass the key directly to the page. This assumes that 8580 * nativePageShouldHandleShiftAndArrows() returned true. 8581 */ 8582 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8583 int keyEventAction; 8584 int eventHubAction; 8585 if (down) { 8586 keyEventAction = KeyEvent.ACTION_DOWN; 8587 eventHubAction = EventHub.KEY_DOWN; 8588 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8589 } else { 8590 keyEventAction = KeyEvent.ACTION_UP; 8591 eventHubAction = EventHub.KEY_UP; 8592 } 8593 8594 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8595 1, (metaState & KeyEvent.META_SHIFT_ON) 8596 | (metaState & KeyEvent.META_ALT_ON) 8597 | (metaState & KeyEvent.META_SYM_ON) 8598 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8599 mWebViewCore.sendMessage(eventHubAction, event); 8600 } 8601 8602 // return true if the key was handled 8603 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8604 long time) { 8605 if (mNativeClass == 0) { 8606 return false; 8607 } 8608 mInitialHitTestResult = null; 8609 mLastCursorTime = time; 8610 mLastCursorBounds = nativeGetCursorRingBounds(); 8611 boolean keyHandled 8612 = nativeMoveCursor(keyCode, count, noScroll) == false; 8613 if (DebugFlags.WEB_VIEW) { 8614 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8615 + " mLastCursorTime=" + mLastCursorTime 8616 + " handled=" + keyHandled); 8617 } 8618 if (keyHandled == false) { 8619 return keyHandled; 8620 } 8621 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8622 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8623 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8624 // set last touch so that context menu related functions will work 8625 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8626 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8627 if (mHeightCanMeasure == false) { 8628 return keyHandled; 8629 } 8630 Rect visRect = new Rect(); 8631 calcOurVisibleRect(visRect); 8632 Rect outset = new Rect(visRect); 8633 int maxXScroll = visRect.width() / 2; 8634 int maxYScroll = visRect.height() / 2; 8635 outset.inset(-maxXScroll, -maxYScroll); 8636 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8637 return keyHandled; 8638 } 8639 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8640 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8641 maxXScroll); 8642 if (maxH > 0) { 8643 pinScrollBy(maxH, 0, true, 0); 8644 } else { 8645 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8646 -maxXScroll); 8647 if (maxH < 0) { 8648 pinScrollBy(maxH, 0, true, 0); 8649 } 8650 } 8651 if (mLastCursorBounds.isEmpty()) return keyHandled; 8652 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8653 return keyHandled; 8654 } 8655 if (DebugFlags.WEB_VIEW) { 8656 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8657 + contentCursorRingBounds); 8658 } 8659 requestRectangleOnScreen(viewCursorRingBounds); 8660 return keyHandled; 8661 } 8662 8663 /** 8664 * @return Whether accessibility script has been injected. 8665 */ 8666 private boolean accessibilityScriptInjected() { 8667 // TODO: Maybe the injected script should announce its presence in 8668 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8669 // will check that as one of the conditions it looks for 8670 return mAccessibilityScriptInjected; 8671 } 8672 8673 /** 8674 * Set the background color. It's white by default. Pass 8675 * zero to make the view transparent. 8676 * @param color the ARGB color described by Color.java 8677 */ 8678 @Override 8679 public void setBackgroundColor(int color) { 8680 mBackgroundColor = color; 8681 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8682 } 8683 8684 public void debugDump() { 8685 nativeDebugDump(); 8686 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8687 } 8688 8689 /** 8690 * Draw the HTML page into the specified canvas. This call ignores any 8691 * view-specific zoom, scroll offset, or other changes. It does not draw 8692 * any view-specific chrome, such as progress or URL bars. 8693 * 8694 * @hide only needs to be accessible to Browser and testing 8695 */ 8696 public void drawPage(Canvas canvas) { 8697 nativeDraw(canvas, 0, 0, false); 8698 } 8699 8700 /** 8701 * Enable the communication b/t the webView and VideoViewProxy 8702 * 8703 * @hide only used by the Browser 8704 */ 8705 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 8706 mHTML5VideoViewProxy = proxy; 8707 } 8708 8709 /** 8710 * Enable expanded tiles bound for smoother scrolling. 8711 * 8712 * @hide only used by the Browser 8713 */ 8714 public void setExpandedTileBounds(boolean enabled) { 8715 nativeSetExpandedTileBounds(enabled); 8716 } 8717 8718 /** 8719 * Set the time to wait between passing touches to WebCore. See also the 8720 * TOUCH_SENT_INTERVAL member for further discussion. 8721 * 8722 * @hide This is only used by the DRT test application. 8723 */ 8724 public void setTouchInterval(int interval) { 8725 mCurrentTouchInterval = interval; 8726 } 8727 8728 /** 8729 * Update our cache with updatedText. 8730 * @param updatedText The new text to put in our cache. 8731 */ 8732 /* package */ void updateCachedTextfield(String updatedText) { 8733 // Also place our generation number so that when we look at the cache 8734 // we recognize that it is up to date. 8735 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8736 } 8737 8738 /*package*/ void autoFillForm(int autoFillQueryId) { 8739 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8740 } 8741 8742 /* package */ ViewManager getViewManager() { 8743 return mViewManager; 8744 } 8745 8746 private native int nativeCacheHitFramePointer(); 8747 private native boolean nativeCacheHitIsPlugin(); 8748 private native Rect nativeCacheHitNodeBounds(); 8749 private native int nativeCacheHitNodePointer(); 8750 /* package */ native void nativeClearCursor(); 8751 private native void nativeCreate(int ptr, String drawableDir, AssetManager am); 8752 private native int nativeCursorFramePointer(); 8753 private native Rect nativeCursorNodeBounds(); 8754 private native int nativeCursorNodePointer(); 8755 private native boolean nativeCursorIntersects(Rect visibleRect); 8756 private native boolean nativeCursorIsAnchor(); 8757 private native boolean nativeCursorIsTextInput(); 8758 private native Point nativeCursorPosition(); 8759 private native String nativeCursorText(); 8760 /** 8761 * Returns true if the native cursor node says it wants to handle key events 8762 * (ala plugins). This can only be called if mNativeClass is non-zero! 8763 */ 8764 private native boolean nativeCursorWantsKeyEvents(); 8765 private native void nativeDebugDump(); 8766 private native void nativeDestroy(); 8767 8768 /** 8769 * Draw the picture set with a background color and extra. If 8770 * "splitIfNeeded" is true and the return value is not 0, the return value 8771 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8772 * native allocation can be freed. 8773 */ 8774 private native int nativeDraw(Canvas canvas, int color, int extra, 8775 boolean splitIfNeeded); 8776 private native void nativeDumpDisplayTree(String urlOrNull); 8777 private native boolean nativeEvaluateLayersAnimations(); 8778 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 8779 float scale, int extras); 8780 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 8781 private native void nativeExtendSelection(int x, int y); 8782 private native int nativeFindAll(String findLower, String findUpper, 8783 boolean sameAsLastSearch); 8784 private native void nativeFindNext(boolean forward); 8785 /* package */ native int nativeFocusCandidateFramePointer(); 8786 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8787 /* package */ native boolean nativeFocusCandidateIsPassword(); 8788 private native boolean nativeFocusCandidateIsRtlText(); 8789 private native boolean nativeFocusCandidateIsTextInput(); 8790 /* package */ native int nativeFocusCandidateMaxLength(); 8791 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8792 /* package */ native String nativeFocusCandidateName(); 8793 private native Rect nativeFocusCandidateNodeBounds(); 8794 /** 8795 * @return A Rect with left, top, right, bottom set to the corresponding 8796 * padding values in the focus candidate, if it is a textfield/textarea with 8797 * a style. Otherwise return null. This is not actually a rectangle; Rect 8798 * is being used to pass four integers. 8799 */ 8800 private native Rect nativeFocusCandidatePaddingRect(); 8801 /* package */ native int nativeFocusCandidatePointer(); 8802 private native String nativeFocusCandidateText(); 8803 /* package */ native float nativeFocusCandidateTextSize(); 8804 /* package */ native int nativeFocusCandidateLineHeight(); 8805 /** 8806 * Returns an integer corresponding to WebView.cpp::type. 8807 * See WebTextView.setType() 8808 */ 8809 private native int nativeFocusCandidateType(); 8810 private native boolean nativeFocusIsPlugin(); 8811 private native Rect nativeFocusNodeBounds(); 8812 /* package */ native int nativeFocusNodePointer(); 8813 private native Rect nativeGetCursorRingBounds(); 8814 private native String nativeGetSelection(); 8815 private native boolean nativeHasCursorNode(); 8816 private native boolean nativeHasFocusNode(); 8817 private native void nativeHideCursor(); 8818 private native boolean nativeHitSelection(int x, int y); 8819 private native String nativeImageURI(int x, int y); 8820 private native void nativeInstrumentReport(); 8821 private native Rect nativeLayerBounds(int layer); 8822 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8823 // return true if the page has been scrolled 8824 private native boolean nativeMotionUp(int x, int y, int slop); 8825 // returns false if it handled the key 8826 private native boolean nativeMoveCursor(int keyCode, int count, 8827 boolean noScroll); 8828 private native int nativeMoveGeneration(); 8829 private native void nativeMoveSelection(int x, int y); 8830 /** 8831 * @return true if the page should get the shift and arrow keys, rather 8832 * than select text/navigation. 8833 * 8834 * If the focus is a plugin, or if the focus and cursor match and are 8835 * a contentEditable element, then the page should handle these keys. 8836 */ 8837 private native boolean nativePageShouldHandleShiftAndArrows(); 8838 private native boolean nativePointInNavCache(int x, int y, int slop); 8839 // Like many other of our native methods, you must make sure that 8840 // mNativeClass is not null before calling this method. 8841 private native void nativeRecordButtons(boolean focused, 8842 boolean pressed, boolean invalidate); 8843 private native void nativeResetSelection(); 8844 private native Point nativeSelectableText(); 8845 private native void nativeSelectAll(); 8846 private native void nativeSelectBestAt(Rect rect); 8847 private native void nativeSelectAt(int x, int y); 8848 private native int nativeSelectionX(); 8849 private native int nativeSelectionY(); 8850 private native int nativeFindIndex(); 8851 private native void nativeSetExtendSelection(); 8852 private native void nativeSetFindIsEmpty(); 8853 private native void nativeSetFindIsUp(boolean isUp); 8854 private native void nativeSetHeightCanMeasure(boolean measure); 8855 private native void nativeSetBaseLayer(int layer, Region invalRegion, 8856 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 8857 private native void nativeShowCursorTimed(); 8858 private native void nativeReplaceBaseContent(int content); 8859 private native void nativeCopyBaseContentToPicture(Picture pict); 8860 private native boolean nativeHasContent(); 8861 private native void nativeSetSelectionPointer(boolean set, 8862 float scale, int x, int y); 8863 private native boolean nativeStartSelection(int x, int y); 8864 private native void nativeStopGL(); 8865 private native Rect nativeSubtractLayers(Rect content); 8866 private native int nativeTextGeneration(); 8867 // Never call this version except by updateCachedTextfield(String) - 8868 // we always want to pass in our generation number. 8869 private native void nativeUpdateCachedTextfield(String updatedText, 8870 int generation); 8871 private native boolean nativeWordSelection(int x, int y); 8872 // return NO_LEFTEDGE means failure. 8873 static final int NO_LEFTEDGE = -1; 8874 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8875 8876 private native void nativeSetExpandedTileBounds(boolean enabled); 8877 8878 // Returns a pointer to the scrollable LayerAndroid at the given point. 8879 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8880 Rect scrollBounds); 8881 /** 8882 * Scroll the specified layer. 8883 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8884 * @param newX Destination x position to which to scroll. 8885 * @param newY Destination y position to which to scroll. 8886 * @return True if the layer is successfully scrolled. 8887 */ 8888 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8889} 8890