WebView.java revision 9f5f7af6ccaf14303c109bfd5b2605eac16c46c6
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageInfo; 29import android.content.pm.PackageManager; 30import android.content.res.Configuration; 31import android.database.DataSetObserver; 32import android.graphics.Bitmap; 33import android.graphics.BitmapFactory; 34import android.graphics.BitmapShader; 35import android.graphics.Canvas; 36import android.graphics.Color; 37import android.graphics.CornerPathEffect; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.Shader; 47import android.graphics.drawable.Drawable; 48import android.net.Proxy; 49import android.net.ProxyProperties; 50import android.net.Uri; 51import android.net.http.SslCertificate; 52import android.os.AsyncTask; 53import android.os.Bundle; 54import android.os.Handler; 55import android.os.Message; 56import android.provider.Settings; 57import android.speech.tts.TextToSpeech; 58import android.text.Selection; 59import android.text.Spannable; 60import android.util.AttributeSet; 61import android.util.EventLog; 62import android.util.Log; 63import android.view.Gravity; 64import android.view.HardwareCanvas; 65import android.view.InputDevice; 66import android.view.KeyCharacterMap; 67import android.view.KeyEvent; 68import android.view.LayoutInflater; 69import android.view.MotionEvent; 70import android.view.ScaleGestureDetector; 71import android.view.SoundEffectConstants; 72import android.view.VelocityTracker; 73import android.view.View; 74import android.view.ViewConfiguration; 75import android.view.ViewGroup; 76import android.view.ViewParent; 77import android.view.ViewTreeObserver; 78import android.view.accessibility.AccessibilityManager; 79import android.view.inputmethod.EditorInfo; 80import android.view.inputmethod.InputConnection; 81import android.view.inputmethod.InputMethodManager; 82import android.webkit.WebTextView.AutoCompleteAdapter; 83import android.webkit.WebViewCore.EventHub; 84import android.webkit.WebViewCore.TouchEventData; 85import android.webkit.WebViewCore.TouchHighlightData; 86import android.widget.AbsoluteLayout; 87import android.widget.Adapter; 88import android.widget.AdapterView; 89import android.widget.AdapterView.OnItemClickListener; 90import android.widget.ArrayAdapter; 91import android.widget.CheckedTextView; 92import android.widget.LinearLayout; 93import android.widget.ListView; 94import android.widget.OverScroller; 95import android.widget.Toast; 96 97import java.io.File; 98import java.io.FileInputStream; 99import java.io.FileNotFoundException; 100import java.io.FileOutputStream; 101import java.net.URLDecoder; 102import java.util.ArrayList; 103import java.util.HashMap; 104import java.util.HashSet; 105import java.util.List; 106import java.util.Map; 107import java.util.Set; 108import java.util.Vector; 109import java.util.regex.Matcher; 110import java.util.regex.Pattern; 111 112import junit.framework.Assert; 113 114/** 115 * <p>A View that displays web pages. This class is the basis upon which you 116 * can roll your own web browser or simply display some online content within your Activity. 117 * It uses the WebKit rendering engine to display 118 * web pages and includes methods to navigate forward and backward 119 * through a history, zoom in and out, perform text searches and more.</p> 120 * <p>To enable the built-in zoom, set 121 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 122 * (introduced in API version 3). 123 * <p>Note that, in order for your Activity to access the Internet and load web pages 124 * in a WebView, you must add the {@code INTERNET} permissions to your 125 * Android Manifest file:</p> 126 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 127 * 128 * <p>This must be a child of the <a 129 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 130 * element.</p> 131 * 132 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 133 * tutorial</a>.</p> 134 * 135 * <h3>Basic usage</h3> 136 * 137 * <p>By default, a WebView provides no browser-like widgets, does not 138 * enable JavaScript and web page errors are ignored. If your goal is only 139 * to display some HTML as a part of your UI, this is probably fine; 140 * the user won't need to interact with the web page beyond reading 141 * it, and the web page won't need to interact with the user. If you 142 * actually want a full-blown web browser, then you probably want to 143 * invoke the Browser application with a URL Intent rather than show it 144 * with a WebView. For example: 145 * <pre> 146 * Uri uri = Uri.parse("http://www.example.com"); 147 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 148 * startActivity(intent); 149 * </pre> 150 * <p>See {@link android.content.Intent} for more information.</p> 151 * 152 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 153 * or set the entire Activity window as a WebView during {@link 154 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 155 * <pre class="prettyprint"> 156 * WebView webview = new WebView(this); 157 * setContentView(webview); 158 * </pre> 159 * 160 * <p>Then load the desired web page:</p> 161 * <pre> 162 * // Simplest usage: note that an exception will NOT be thrown 163 * // if there is an error loading this page (see below). 164 * webview.loadUrl("http://slashdot.org/"); 165 * 166 * // OR, you can also load from an HTML string: 167 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 168 * webview.loadData(summary, "text/html", "utf-8"); 169 * // ... although note that there are restrictions on what this HTML can do. 170 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 171 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 172 * </pre> 173 * 174 * <p>A WebView has several customization points where you can add your 175 * own behavior. These are:</p> 176 * 177 * <ul> 178 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 179 * This class is called when something that might impact a 180 * browser UI happens, for instance, progress updates and 181 * JavaScript alerts are sent here (see <a 182 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 183 * </li> 184 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 185 * It will be called when things happen that impact the 186 * rendering of the content, eg, errors or form submissions. You 187 * can also intercept URL loading here (via {@link 188 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 189 * shouldOverrideUrlLoading()}).</li> 190 * <li>Modifying the {@link android.webkit.WebSettings}, such as 191 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 192 * setJavaScriptEnabled()}. </li> 193 * <li>Adding JavaScript-to-Java interfaces with the {@link 194 * android.webkit.WebView#addJavascriptInterface} method. 195 * This lets you bind Java objects into the WebView so they can be 196 * controlled from the web pages JavaScript.</li> 197 * </ul> 198 * 199 * <p>Here's a more complicated example, showing error handling, 200 * settings, and progress notification:</p> 201 * 202 * <pre class="prettyprint"> 203 * // Let's display the progress in the activity title bar, like the 204 * // browser app does. 205 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 206 * 207 * webview.getSettings().setJavaScriptEnabled(true); 208 * 209 * final Activity activity = this; 210 * webview.setWebChromeClient(new WebChromeClient() { 211 * public void onProgressChanged(WebView view, int progress) { 212 * // Activities and WebViews measure progress with different scales. 213 * // The progress meter will automatically disappear when we reach 100% 214 * activity.setProgress(progress * 1000); 215 * } 216 * }); 217 * webview.setWebViewClient(new WebViewClient() { 218 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 219 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 220 * } 221 * }); 222 * 223 * webview.loadUrl("http://slashdot.org/"); 224 * </pre> 225 * 226 * <h3>Cookie and window management</h3> 227 * 228 * <p>For obvious security reasons, your application has its own 229 * cache, cookie store etc.—it does not share the Browser 230 * application's data. Cookies are managed on a separate thread, so 231 * operations like index building don't block the UI 232 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 233 * if you want to use cookies in your application. 234 * </p> 235 * 236 * <p>By default, requests by the HTML to open new windows are 237 * ignored. This is true whether they be opened by JavaScript or by 238 * the target attribute on a link. You can customize your 239 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 240 * and render them in whatever manner you want.</p> 241 * 242 * <p>The standard behavior for an Activity is to be destroyed and 243 * recreated when the device orientation or any other configuration changes. This will cause 244 * the WebView to reload the current page. If you don't want that, you 245 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 246 * changes, and then just leave the WebView alone. It'll automatically 247 * re-orient itself as appropriate. Read <a 248 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 249 * more information about how to handle configuration changes during runtime.</p> 250 * 251 * 252 * <h3>Building web pages to support different screen densities</h3> 253 * 254 * <p>The screen density of a device is based on the screen resolution. A screen with low density 255 * has fewer available pixels per inch, where a screen with high density 256 * has more — sometimes significantly more — pixels per inch. The density of a 257 * screen is important because, other things being equal, a UI element (such as a button) whose 258 * height and width are defined in terms of screen pixels will appear larger on the lower density 259 * screen and smaller on the higher density screen. 260 * For simplicity, Android collapses all actual screen densities into three generalized densities: 261 * high, medium, and low.</p> 262 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 263 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 264 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 265 * are bigger). 266 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 267 * you (as a web developer) target screens with different screen densities.</p> 268 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 269 * <ul> 270 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 271 * default scaling factor used for the current device. For example, if the value of {@code 272 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 273 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 274 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 275 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 276 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 277 * (discussed below), then you can stop this default scaling behavior.</li> 278 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 279 * densities for which this style sheet is to be used. The corresponding value should be either 280 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 281 * density, or high density screens, respectively. For example: 282 * <pre> 283 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 284 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 285 * which is the high density pixel ratio.</p> 286 * </li> 287 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 288 * this to specify the target density for which the web page is designed, using the following 289 * values: 290 * <ul> 291 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 292 * occurs.</li> 293 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 294 * as appropriate.</li> 295 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 296 * low density screens scale down. This is also the default behavior.</li> 297 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 298 * as appropriate.</li> 299 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 300 * values are 70-400).</li> 301 * </ul> 302 * <p>Here's an example meta tag to specify the target density:</p> 303 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 304 * </ul> 305 * <p>If you want to modify your web page for different densities, by using the {@code 306 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 307 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 308 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 309 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 310 * 311 * 312 */ 313@Widget 314public class WebView extends AbsoluteLayout 315 implements ViewTreeObserver.OnGlobalFocusChangeListener, 316 ViewGroup.OnHierarchyChangeListener { 317 318 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 319 public void onGlobalLayout() { 320 if (isShown()) { 321 setGLRectViewport(); 322 } 323 } 324 } 325 326 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 327 public void onScrollChanged() { 328 if (isShown()) { 329 setGLRectViewport(); 330 } 331 } 332 } 333 334 // The listener to capture global layout change event. 335 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 336 337 // The listener to capture scroll event. 338 private InnerScrollChangedListener mScrollChangedListener = null; 339 340 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 341 // the screen all-the-time. Good for profiling our drawing code 342 static private final boolean AUTO_REDRAW_HACK = false; 343 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 344 private boolean mAutoRedraw; 345 346 // Reference to the AlertDialog displayed by InvokeListBox. 347 // It's used to dismiss the dialog in destroy if not done before. 348 private AlertDialog mListBoxDialog = null; 349 350 static final String LOGTAG = "webview"; 351 352 private ZoomManager mZoomManager; 353 354 private Rect mGLRectViewport = new Rect(); 355 private boolean mGLViewportEmpty = false; 356 357 /** 358 * Transportation object for returning WebView across thread boundaries. 359 */ 360 public class WebViewTransport { 361 private WebView mWebview; 362 363 /** 364 * Set the WebView to the transportation object. 365 * @param webview The WebView to transport. 366 */ 367 public synchronized void setWebView(WebView webview) { 368 mWebview = webview; 369 } 370 371 /** 372 * Return the WebView object. 373 * @return WebView The transported WebView object. 374 */ 375 public synchronized WebView getWebView() { 376 return mWebview; 377 } 378 } 379 380 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 381 private final CallbackProxy mCallbackProxy; 382 383 private final WebViewDatabase mDatabase; 384 385 // SSL certificate for the main top-level page (if secure) 386 private SslCertificate mCertificate; 387 388 // Native WebView pointer that is 0 until the native object has been 389 // created. 390 private int mNativeClass; 391 // This would be final but it needs to be set to null when the WebView is 392 // destroyed. 393 private WebViewCore mWebViewCore; 394 // Handler for dispatching UI messages. 395 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 396 private WebTextView mWebTextView; 397 // Used to ignore changes to webkit text that arrives to the UI side after 398 // more key events. 399 private int mTextGeneration; 400 401 /* package */ void incrementTextGeneration() { mTextGeneration++; } 402 403 // Used by WebViewCore to create child views. 404 /* package */ final ViewManager mViewManager; 405 406 // Used to display in full screen mode 407 PluginFullScreenHolder mFullScreenHolder; 408 409 /** 410 * Position of the last touch event in pixels. 411 * Use integer to prevent loss of dragging delta calculation accuracy; 412 * which was done in float and converted to integer, and resulted in gradual 413 * and compounding touch position and view dragging mismatch. 414 */ 415 private int mLastTouchX; 416 private int mLastTouchY; 417 418 /** 419 * Time of the last touch event. 420 */ 421 private long mLastTouchTime; 422 423 /** 424 * Time of the last time sending touch event to WebViewCore 425 */ 426 private long mLastSentTouchTime; 427 428 /** 429 * The minimum elapsed time before sending another ACTION_MOVE event to 430 * WebViewCore. This really should be tuned for each type of the devices. 431 * For example in Google Map api test case, it takes Dream device at least 432 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 433 * triggering the layout and drawing the picture. While the same process 434 * takes 60+ms on the current high speed device. If we make 435 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 436 * to WebViewCore queue and the real layout and draw events will be pushed 437 * to further, which slows down the refresh rate. Choose 50 to favor the 438 * current high speed devices. For Dream like devices, 100 is a better 439 * choice. Maybe make this in the buildspec later. 440 * (Update 12/14/2010: changed to 0 since current device should be able to 441 * handle the raw events and Map team voted to have the raw events too. 442 */ 443 private static final int TOUCH_SENT_INTERVAL = 0; 444 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 445 446 /** 447 * Helper class to get velocity for fling 448 */ 449 VelocityTracker mVelocityTracker; 450 private int mMaximumFling; 451 private float mLastVelocity; 452 private float mLastVelX; 453 private float mLastVelY; 454 455 // The id of the native layer being scrolled. 456 private int mScrollingLayer; 457 private Rect mScrollingLayerRect = new Rect(); 458 459 // only trigger accelerated fling if the new velocity is at least 460 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 461 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 462 463 /** 464 * Touch mode 465 */ 466 private int mTouchMode = TOUCH_DONE_MODE; 467 private static final int TOUCH_INIT_MODE = 1; 468 private static final int TOUCH_DRAG_START_MODE = 2; 469 private static final int TOUCH_DRAG_MODE = 3; 470 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 471 private static final int TOUCH_SHORTPRESS_MODE = 5; 472 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 473 private static final int TOUCH_DONE_MODE = 7; 474 private static final int TOUCH_PINCH_DRAG = 8; 475 private static final int TOUCH_DRAG_LAYER_MODE = 9; 476 477 // Whether to forward the touch events to WebCore 478 // Can only be set by WebKit via JNI. 479 private boolean mForwardTouchEvents = false; 480 481 // Whether to prevent default during touch. The initial value depends on 482 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 483 // for touch down. Otherwise UI will wait for the answer of the first 484 // confirmed move before taking over the control. 485 private static final int PREVENT_DEFAULT_NO = 0; 486 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 487 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 488 private static final int PREVENT_DEFAULT_YES = 3; 489 private static final int PREVENT_DEFAULT_IGNORE = 4; 490 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 491 492 // true when the touch movement exceeds the slop 493 private boolean mConfirmMove; 494 495 // if true, touch events will be first processed by WebCore, if prevent 496 // default is not set, the UI will continue handle them. 497 private boolean mDeferTouchProcess; 498 499 // Currently, multi-touch events are sent to WebKit first then back to 500 // WebView while single-touch events are handled in WebView first. 501 // So there is a chance that a single-touch move event is handled in WebView 502 // before multi-touch events are finished. 503 // if mIsHandlingMultiTouch is true, which means multi-touch event handling 504 // is not finished, then any single-touch move event will be skipped. 505 // FIXME: send single-touch events to WebKit first then back to WebView. 506 private boolean mIsHandlingMultiTouch = false; 507 508 // to avoid interfering with the current touch events, track them 509 // separately. Currently no snapping or fling in the deferred process mode 510 private int mDeferTouchMode = TOUCH_DONE_MODE; 511 private float mLastDeferTouchX; 512 private float mLastDeferTouchY; 513 514 // To keep track of whether the current drag was initiated by a WebTextView, 515 // so that we know not to hide the cursor 516 boolean mDragFromTextInput; 517 518 // Whether or not to draw the cursor ring. 519 private boolean mDrawCursorRing = true; 520 521 // true if onPause has been called (and not onResume) 522 private boolean mIsPaused; 523 524 private HitTestResult mInitialHitTestResult; 525 526 /** 527 * Customizable constant 528 */ 529 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 530 private int mTouchSlopSquare; 531 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 532 private int mDoubleTapSlopSquare; 533 // pre-computed density adjusted navigation slop 534 private int mNavSlop; 535 // This should be ViewConfiguration.getTapTimeout() 536 // But system time out is 100ms, which is too short for the browser. 537 // In the browser, if it switches out of tap too soon, jump tap won't work. 538 private static final int TAP_TIMEOUT = 200; 539 // This should be ViewConfiguration.getLongPressTimeout() 540 // But system time out is 500ms, which is too short for the browser. 541 // With a short timeout, it's difficult to treat trigger a short press. 542 private static final int LONG_PRESS_TIMEOUT = 1000; 543 // needed to avoid flinging after a pause of no movement 544 private static final int MIN_FLING_TIME = 250; 545 // draw unfiltered after drag is held without movement 546 private static final int MOTIONLESS_TIME = 100; 547 // The amount of content to overlap between two screens when going through 548 // pages with the space bar, in pixels. 549 private static final int PAGE_SCROLL_OVERLAP = 24; 550 551 /** 552 * These prevent calling requestLayout if either dimension is fixed. This 553 * depends on the layout parameters and the measure specs. 554 */ 555 boolean mWidthCanMeasure; 556 boolean mHeightCanMeasure; 557 558 // Remember the last dimensions we sent to the native side so we can avoid 559 // sending the same dimensions more than once. 560 int mLastWidthSent; 561 int mLastHeightSent; 562 // Since view height sent to webkit could be fixed to avoid relayout, this 563 // value records the last sent actual view height. 564 int mLastActualHeightSent; 565 566 private int mContentWidth; // cache of value from WebViewCore 567 private int mContentHeight; // cache of value from WebViewCore 568 569 // Need to have the separate control for horizontal and vertical scrollbar 570 // style than the View's single scrollbar style 571 private boolean mOverlayHorizontalScrollbar = true; 572 private boolean mOverlayVerticalScrollbar = false; 573 574 // our standard speed. this way small distances will be traversed in less 575 // time than large distances, but we cap the duration, so that very large 576 // distances won't take too long to get there. 577 private static final int STD_SPEED = 480; // pixels per second 578 // time for the longest scroll animation 579 private static final int MAX_DURATION = 750; // milliseconds 580 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 581 582 // Used by OverScrollGlow 583 OverScroller mScroller; 584 585 private boolean mInOverScrollMode = false; 586 private static Paint mOverScrollBackground; 587 private static Paint mOverScrollBorder; 588 589 private boolean mWrapContent; 590 private static final int MOTIONLESS_FALSE = 0; 591 private static final int MOTIONLESS_PENDING = 1; 592 private static final int MOTIONLESS_TRUE = 2; 593 private static final int MOTIONLESS_IGNORE = 3; 594 private int mHeldMotionless; 595 596 // An instance for injecting accessibility in WebViews with disabled 597 // JavaScript or ones for which no accessibility script exists 598 private AccessibilityInjector mAccessibilityInjector; 599 600 // flag indicating if accessibility script is injected so we 601 // know to handle Shift and arrows natively first 602 private boolean mAccessibilityScriptInjected; 603 604 // the color used to highlight the touch rectangles 605 private static final int mHightlightColor = 0x33000000; 606 // the round corner for the highlight path 607 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 608 // the region indicating where the user touched on the screen 609 private Region mTouchHighlightRegion = new Region(); 610 // the paint for the touch highlight 611 private Paint mTouchHightlightPaint; 612 // debug only 613 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 614 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 615 private Paint mTouchCrossHairColor; 616 private int mTouchHighlightX; 617 private int mTouchHighlightY; 618 619 /* 620 * Private message ids 621 */ 622 private static final int REMEMBER_PASSWORD = 1; 623 private static final int NEVER_REMEMBER_PASSWORD = 2; 624 private static final int SWITCH_TO_SHORTPRESS = 3; 625 private static final int SWITCH_TO_LONGPRESS = 4; 626 private static final int RELEASE_SINGLE_TAP = 5; 627 private static final int REQUEST_FORM_DATA = 6; 628 private static final int RESUME_WEBCORE_PRIORITY = 7; 629 private static final int DRAG_HELD_MOTIONLESS = 8; 630 private static final int AWAKEN_SCROLL_BARS = 9; 631 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 632 private static final int SCROLL_SELECT_TEXT = 11; 633 634 635 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 636 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 637 638 /* 639 * Package message ids 640 */ 641 static final int SCROLL_TO_MSG_ID = 101; 642 static final int NEW_PICTURE_MSG_ID = 105; 643 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 644 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 645 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 646 static final int UPDATE_ZOOM_RANGE = 109; 647 static final int UNHANDLED_NAV_KEY = 110; 648 static final int CLEAR_TEXT_ENTRY = 111; 649 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 650 static final int SHOW_RECT_MSG_ID = 113; 651 static final int LONG_PRESS_CENTER = 114; 652 static final int PREVENT_TOUCH_ID = 115; 653 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 654 // obj=Rect in doc coordinates 655 static final int INVAL_RECT_MSG_ID = 117; 656 static final int REQUEST_KEYBOARD = 118; 657 static final int DO_MOTION_UP = 119; 658 static final int SHOW_FULLSCREEN = 120; 659 static final int HIDE_FULLSCREEN = 121; 660 static final int DOM_FOCUS_CHANGED = 122; 661 static final int REPLACE_BASE_CONTENT = 123; 662 static final int FORM_DID_BLUR = 124; 663 static final int RETURN_LABEL = 125; 664 static final int FIND_AGAIN = 126; 665 static final int CENTER_FIT_RECT = 127; 666 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 667 static final int SET_SCROLLBAR_MODES = 129; 668 static final int SELECTION_STRING_CHANGED = 130; 669 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 670 static final int SAVE_WEBARCHIVE_FINISHED = 132; 671 672 static final int SET_AUTOFILLABLE = 133; 673 static final int AUTOFILL_COMPLETE = 134; 674 675 static final int SELECT_AT = 135; 676 static final int SCREEN_ON = 136; 677 678 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 679 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 680 681 static final String[] HandlerPrivateDebugString = { 682 "REMEMBER_PASSWORD", // = 1; 683 "NEVER_REMEMBER_PASSWORD", // = 2; 684 "SWITCH_TO_SHORTPRESS", // = 3; 685 "SWITCH_TO_LONGPRESS", // = 4; 686 "RELEASE_SINGLE_TAP", // = 5; 687 "REQUEST_FORM_DATA", // = 6; 688 "RESUME_WEBCORE_PRIORITY", // = 7; 689 "DRAG_HELD_MOTIONLESS", // = 8; 690 "AWAKEN_SCROLL_BARS", // = 9; 691 "PREVENT_DEFAULT_TIMEOUT", // = 10; 692 "SCROLL_SELECT_TEXT" // = 11; 693 }; 694 695 static final String[] HandlerPackageDebugString = { 696 "SCROLL_TO_MSG_ID", // = 101; 697 "102", // = 102; 698 "103", // = 103; 699 "104", // = 104; 700 "NEW_PICTURE_MSG_ID", // = 105; 701 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 702 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 703 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 704 "UPDATE_ZOOM_RANGE", // = 109; 705 "UNHANDLED_NAV_KEY", // = 110; 706 "CLEAR_TEXT_ENTRY", // = 111; 707 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 708 "SHOW_RECT_MSG_ID", // = 113; 709 "LONG_PRESS_CENTER", // = 114; 710 "PREVENT_TOUCH_ID", // = 115; 711 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 712 "INVAL_RECT_MSG_ID", // = 117; 713 "REQUEST_KEYBOARD", // = 118; 714 "DO_MOTION_UP", // = 119; 715 "SHOW_FULLSCREEN", // = 120; 716 "HIDE_FULLSCREEN", // = 121; 717 "DOM_FOCUS_CHANGED", // = 122; 718 "REPLACE_BASE_CONTENT", // = 123; 719 "FORM_DID_BLUR", // = 124; 720 "RETURN_LABEL", // = 125; 721 "FIND_AGAIN", // = 126; 722 "CENTER_FIT_RECT", // = 127; 723 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 724 "SET_SCROLLBAR_MODES", // = 129; 725 "SELECTION_STRING_CHANGED", // = 130; 726 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 727 "SAVE_WEBARCHIVE_FINISHED", // = 132; 728 "SET_AUTOFILLABLE", // = 133; 729 "AUTOFILL_COMPLETE", // = 134; 730 "SELECT_AT", // = 135; 731 "SCREEN_ON" // = 136; 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 to notify listeners of a new picture. 851 private PictureListener mPictureListener; 852 /** 853 * Interface to listen for new pictures as they change. 854 * @deprecated This interface is now obsolete. 855 */ 856 @Deprecated 857 public interface PictureListener { 858 /** 859 * Notify the listener that the picture has changed. 860 * @param view The WebView that owns the picture. 861 * @param picture The new picture. 862 * @deprecated This method is now obsolete. 863 */ 864 @Deprecated 865 public void onNewPicture(WebView view, Picture picture); 866 } 867 868 // FIXME: Want to make this public, but need to change the API file. 869 public /*static*/ class HitTestResult { 870 /** 871 * Default HitTestResult, where the target is unknown 872 */ 873 public static final int UNKNOWN_TYPE = 0; 874 /** 875 * HitTestResult for hitting a HTML::a tag 876 */ 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 * HitTestResult for hitting a HTML::a tag which contains HTML::img 896 */ 897 public static final int IMAGE_ANCHOR_TYPE = 6; 898 /** 899 * HitTestResult for hitting a HTML::a tag with src=http 900 */ 901 public static final int SRC_ANCHOR_TYPE = 7; 902 /** 903 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 904 */ 905 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 906 /** 907 * HitTestResult for hitting an edit text area 908 */ 909 public static final int EDIT_TEXT_TYPE = 9; 910 911 private int mType; 912 private String mExtra; 913 914 HitTestResult() { 915 mType = UNKNOWN_TYPE; 916 } 917 918 private void setType(int type) { 919 mType = type; 920 } 921 922 private void setExtra(String extra) { 923 mExtra = extra; 924 } 925 926 public int getType() { 927 return mType; 928 } 929 930 public String getExtra() { 931 return mExtra; 932 } 933 } 934 935 /** 936 * Construct a new WebView with a Context object. 937 * @param context A Context object used to access application assets. 938 */ 939 public WebView(Context context) { 940 this(context, null); 941 } 942 943 /** 944 * Construct a new WebView with layout parameters. 945 * @param context A Context object used to access application assets. 946 * @param attrs An AttributeSet passed to our parent. 947 */ 948 public WebView(Context context, AttributeSet attrs) { 949 this(context, attrs, com.android.internal.R.attr.webViewStyle); 950 } 951 952 /** 953 * Construct a new WebView with layout parameters and a default style. 954 * @param context A Context object used to access application assets. 955 * @param attrs An AttributeSet passed to our parent. 956 * @param defStyle The default style resource ID. 957 */ 958 public WebView(Context context, AttributeSet attrs, int defStyle) { 959 this(context, attrs, defStyle, false); 960 } 961 962 /** 963 * Construct a new WebView with layout parameters and a default style. 964 * @param context A Context object used to access application assets. 965 * @param attrs An AttributeSet passed to our parent. 966 * @param defStyle The default style resource ID. 967 */ 968 public WebView(Context context, AttributeSet attrs, int defStyle, 969 boolean privateBrowsing) { 970 this(context, attrs, defStyle, null, privateBrowsing); 971 } 972 973 /** 974 * Construct a new WebView with layout parameters, a default style and a set 975 * of custom Javscript interfaces to be added to the WebView at initialization 976 * time. This guarantees that these interfaces will be available when the JS 977 * context is initialized. 978 * @param context A Context object used to access application assets. 979 * @param attrs An AttributeSet passed to our parent. 980 * @param defStyle The default style resource ID. 981 * @param javaScriptInterfaces is a Map of interface names, as keys, and 982 * object implementing those interfaces, as values. 983 * @hide pending API council approval. 984 */ 985 protected WebView(Context context, AttributeSet attrs, int defStyle, 986 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 987 super(context, attrs, defStyle); 988 989 // Used by the chrome stack to find application paths 990 JniUtil.setContext(context); 991 992 mCallbackProxy = new CallbackProxy(context, this); 993 mViewManager = new ViewManager(this); 994 L10nUtils.setApplicationContext(context.getApplicationContext()); 995 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 996 mDatabase = WebViewDatabase.getInstance(context); 997 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 998 mZoomManager = new ZoomManager(this, mCallbackProxy); 999 1000 /* The init method must follow the creation of certain member variables, 1001 * such as the mZoomManager. 1002 */ 1003 init(); 1004 setupPackageListener(context); 1005 setupProxyListener(context); 1006 updateMultiTouchSupport(context); 1007 1008 if (privateBrowsing) { 1009 startPrivateBrowsing(); 1010 } 1011 1012 mAutoFillData = new WebViewCore.AutoFillData(); 1013 } 1014 1015 private static class ProxyReceiver extends BroadcastReceiver { 1016 @Override 1017 public void onReceive(Context context, Intent intent) { 1018 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1019 handleProxyBroadcast(intent); 1020 } 1021 } 1022 } 1023 1024 /* 1025 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1026 */ 1027 private static boolean sProxyReceiverAdded; 1028 1029 private static synchronized void setupProxyListener(Context context) { 1030 if (sProxyReceiverAdded) { 1031 return; 1032 } 1033 IntentFilter filter = new IntentFilter(); 1034 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1035 Intent currentProxy = context.getApplicationContext().registerReceiver( 1036 new ProxyReceiver(), filter); 1037 sProxyReceiverAdded = true; 1038 if (currentProxy != null) { 1039 handleProxyBroadcast(currentProxy); 1040 } 1041 } 1042 1043 private static void handleProxyBroadcast(Intent intent) { 1044 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1045 if (proxyProperties == null || proxyProperties.getHost() == null) { 1046 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1047 return; 1048 } 1049 1050 String host = proxyProperties.getHost(); 1051 int port = proxyProperties.getPort(); 1052 if (port != 0) 1053 host += ":" + port; 1054 1055 // TODO: Handle exclusion list 1056 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1057 // there 1058 String exclusionList = proxyProperties.getExclusionList(); 1059 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1060 } 1061 1062 /* 1063 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1064 * or ACTION_PACKAGE_REMOVED. 1065 */ 1066 private static boolean sPackageInstallationReceiverAdded = false; 1067 1068 /* 1069 * A set of Google packages we monitor for the 1070 * navigator.isApplicationInstalled() API. Add additional packages as 1071 * needed. 1072 */ 1073 private static Set<String> sGoogleApps; 1074 static { 1075 sGoogleApps = new HashSet<String>(); 1076 sGoogleApps.add("com.google.android.youtube"); 1077 } 1078 1079 private static class PackageListener extends BroadcastReceiver { 1080 @Override 1081 public void onReceive(Context context, Intent intent) { 1082 final String action = intent.getAction(); 1083 final String packageName = intent.getData().getSchemeSpecificPart(); 1084 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1085 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1086 // if it is replacing, refreshPlugins() when adding 1087 return; 1088 } 1089 1090 if (sGoogleApps.contains(packageName)) { 1091 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1092 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1093 } else { 1094 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1095 } 1096 } 1097 1098 PluginManager pm = PluginManager.getInstance(context); 1099 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1100 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1101 } 1102 } 1103 } 1104 1105 private void setupPackageListener(Context context) { 1106 1107 /* 1108 * we must synchronize the instance check and the creation of the 1109 * receiver to ensure that only ONE receiver exists for all WebView 1110 * instances. 1111 */ 1112 synchronized (WebView.class) { 1113 1114 // if the receiver already exists then we do not need to register it 1115 // again 1116 if (sPackageInstallationReceiverAdded) { 1117 return; 1118 } 1119 1120 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1121 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1122 filter.addDataScheme("package"); 1123 BroadcastReceiver packageListener = new PackageListener(); 1124 context.getApplicationContext().registerReceiver(packageListener, filter); 1125 sPackageInstallationReceiverAdded = true; 1126 } 1127 1128 // check if any of the monitored apps are already installed 1129 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1130 1131 @Override 1132 protected Set<String> doInBackground(Void... unused) { 1133 Set<String> installedPackages = new HashSet<String>(); 1134 PackageManager pm = mContext.getPackageManager(); 1135 List<PackageInfo> packages = pm.getInstalledPackages(0); 1136 for (PackageInfo p : packages) { 1137 if (sGoogleApps.contains(p.packageName)) { 1138 installedPackages.add(p.packageName); 1139 } 1140 } 1141 return installedPackages; 1142 } 1143 1144 // Executes on the UI thread 1145 @Override 1146 protected void onPostExecute(Set<String> installedPackages) { 1147 if (mWebViewCore != null) { 1148 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1149 } 1150 } 1151 }; 1152 task.execute(); 1153 } 1154 1155 void updateMultiTouchSupport(Context context) { 1156 mZoomManager.updateMultiTouchSupport(context); 1157 } 1158 1159 private void init() { 1160 setWillNotDraw(false); 1161 setFocusable(true); 1162 setFocusableInTouchMode(true); 1163 setClickable(true); 1164 setLongClickable(true); 1165 1166 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1167 int slop = configuration.getScaledTouchSlop(); 1168 mTouchSlopSquare = slop * slop; 1169 mMinLockSnapReverseDistance = slop; 1170 slop = configuration.getScaledDoubleTapSlop(); 1171 mDoubleTapSlopSquare = slop * slop; 1172 final float density = getContext().getResources().getDisplayMetrics().density; 1173 // use one line height, 16 based on our current default font, for how 1174 // far we allow a touch be away from the edge of a link 1175 mNavSlop = (int) (16 * density); 1176 mZoomManager.init(density); 1177 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1178 1179 // Compute the inverse of the density squared. 1180 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1181 1182 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1183 mOverflingDistance = configuration.getScaledOverflingDistance(); 1184 1185 setScrollBarStyle(super.getScrollBarStyle()); 1186 // Initially use a size of two, since the user is likely to only hold 1187 // down two keys at a time (shift + another key) 1188 mKeysPressed = new Vector<Integer>(2); 1189 } 1190 1191 /** 1192 * Adds accessibility APIs to JavaScript. 1193 * 1194 * Note: This method is responsible to performing the necessary 1195 * check if the accessibility APIs should be exposed. 1196 */ 1197 private void addAccessibilityApisToJavaScript() { 1198 if (AccessibilityManager.getInstance(mContext).isEnabled() 1199 && getSettings().getJavaScriptEnabled()) { 1200 // exposing the TTS for now ... 1201 mTextToSpeech = new TextToSpeech(getContext(), null); 1202 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1203 } 1204 } 1205 1206 /** 1207 * Removes accessibility APIs from JavaScript. 1208 */ 1209 private void removeAccessibilityApisFromJavaScript() { 1210 // exposing the TTS for now ... 1211 if (mTextToSpeech != null) { 1212 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1213 mTextToSpeech.shutdown(); 1214 mTextToSpeech = null; 1215 } 1216 } 1217 1218 @Override 1219 public void setOverScrollMode(int mode) { 1220 super.setOverScrollMode(mode); 1221 if (mode != OVER_SCROLL_NEVER) { 1222 if (mOverScrollGlow == null) { 1223 mOverScrollGlow = new OverScrollGlow(this); 1224 } 1225 } else { 1226 mOverScrollGlow = null; 1227 } 1228 } 1229 1230 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1231 final float density = mContext.getResources().getDisplayMetrics().density 1232 * 100 / zoomDensity; 1233 mNavSlop = (int) (16 * density); 1234 mZoomManager.updateDefaultZoomDensity(density); 1235 } 1236 1237 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1238 String password, final Message resumeMsg) { 1239 boolean rVal = false; 1240 if (resumeMsg == null) { 1241 // null resumeMsg implies saving password silently 1242 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1243 } else { 1244 final Message remember = mPrivateHandler.obtainMessage( 1245 REMEMBER_PASSWORD); 1246 remember.getData().putString("host", schemePlusHost); 1247 remember.getData().putString("username", username); 1248 remember.getData().putString("password", password); 1249 remember.obj = resumeMsg; 1250 1251 final Message neverRemember = mPrivateHandler.obtainMessage( 1252 NEVER_REMEMBER_PASSWORD); 1253 neverRemember.getData().putString("host", schemePlusHost); 1254 neverRemember.getData().putString("username", username); 1255 neverRemember.getData().putString("password", password); 1256 neverRemember.obj = resumeMsg; 1257 1258 new AlertDialog.Builder(getContext()) 1259 .setTitle(com.android.internal.R.string.save_password_label) 1260 .setMessage(com.android.internal.R.string.save_password_message) 1261 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1262 new DialogInterface.OnClickListener() { 1263 public void onClick(DialogInterface dialog, int which) { 1264 resumeMsg.sendToTarget(); 1265 } 1266 }) 1267 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1268 new DialogInterface.OnClickListener() { 1269 public void onClick(DialogInterface dialog, int which) { 1270 remember.sendToTarget(); 1271 } 1272 }) 1273 .setNegativeButton(com.android.internal.R.string.save_password_never, 1274 new DialogInterface.OnClickListener() { 1275 public void onClick(DialogInterface dialog, int which) { 1276 neverRemember.sendToTarget(); 1277 } 1278 }) 1279 .setOnCancelListener(new OnCancelListener() { 1280 public void onCancel(DialogInterface dialog) { 1281 resumeMsg.sendToTarget(); 1282 } 1283 }).show(); 1284 // Return true so that WebViewCore will pause while the dialog is 1285 // up. 1286 rVal = true; 1287 } 1288 return rVal; 1289 } 1290 1291 @Override 1292 public void setScrollBarStyle(int style) { 1293 if (style == View.SCROLLBARS_INSIDE_INSET 1294 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1295 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1296 } else { 1297 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1298 } 1299 super.setScrollBarStyle(style); 1300 } 1301 1302 /** 1303 * Specify whether the horizontal scrollbar has overlay style. 1304 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1305 */ 1306 public void setHorizontalScrollbarOverlay(boolean overlay) { 1307 mOverlayHorizontalScrollbar = overlay; 1308 } 1309 1310 /** 1311 * Specify whether the vertical scrollbar has overlay style. 1312 * @param overlay TRUE if vertical scrollbar should have overlay style. 1313 */ 1314 public void setVerticalScrollbarOverlay(boolean overlay) { 1315 mOverlayVerticalScrollbar = overlay; 1316 } 1317 1318 /** 1319 * Return whether horizontal scrollbar has overlay style 1320 * @return TRUE if horizontal scrollbar has overlay style. 1321 */ 1322 public boolean overlayHorizontalScrollbar() { 1323 return mOverlayHorizontalScrollbar; 1324 } 1325 1326 /** 1327 * Return whether vertical scrollbar has overlay style 1328 * @return TRUE if vertical scrollbar has overlay style. 1329 */ 1330 public boolean overlayVerticalScrollbar() { 1331 return mOverlayVerticalScrollbar; 1332 } 1333 1334 /* 1335 * Return the width of the view where the content of WebView should render 1336 * to. 1337 * Note: this can be called from WebCoreThread. 1338 */ 1339 /* package */ int getViewWidth() { 1340 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1341 return getWidth(); 1342 } else { 1343 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1344 } 1345 } 1346 1347 /** 1348 * returns the height of the titlebarview (if any). Does not care about 1349 * scrolling 1350 * @hide 1351 */ 1352 protected int getTitleHeight() { 1353 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1354 } 1355 1356 /* 1357 * Return the amount of the titlebarview (if any) that is visible 1358 * 1359 * @hide 1360 */ 1361 public int getVisibleTitleHeight() { 1362 // need to restrict mScrollY due to over scroll 1363 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1364 } 1365 1366 /* 1367 * Return the height of the view where the content of WebView should render 1368 * to. Note that this excludes mTitleBar, if there is one. 1369 * Note: this can be called from WebCoreThread. 1370 */ 1371 /* package */ int getViewHeight() { 1372 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1373 } 1374 1375 private int getViewHeightWithTitle() { 1376 int height = getHeight(); 1377 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1378 height -= getHorizontalScrollbarHeight(); 1379 } 1380 return height; 1381 } 1382 1383 /** 1384 * @return The SSL certificate for the main top-level page or null if 1385 * there is no certificate (the site is not secure). 1386 */ 1387 public SslCertificate getCertificate() { 1388 return mCertificate; 1389 } 1390 1391 /** 1392 * Sets the SSL certificate for the main top-level page. 1393 */ 1394 public void setCertificate(SslCertificate certificate) { 1395 if (DebugFlags.WEB_VIEW) { 1396 Log.v(LOGTAG, "setCertificate=" + certificate); 1397 } 1398 // here, the certificate can be null (if the site is not secure) 1399 mCertificate = certificate; 1400 } 1401 1402 //------------------------------------------------------------------------- 1403 // Methods called by activity 1404 //------------------------------------------------------------------------- 1405 1406 /** 1407 * Save the username and password for a particular host in the WebView's 1408 * internal database. 1409 * @param host The host that required the credentials. 1410 * @param username The username for the given host. 1411 * @param password The password for the given host. 1412 */ 1413 public void savePassword(String host, String username, String password) { 1414 mDatabase.setUsernamePassword(host, username, password); 1415 } 1416 1417 /** 1418 * Set the HTTP authentication credentials for a given host and realm. 1419 * 1420 * @param host The host for the credentials. 1421 * @param realm The realm for the credentials. 1422 * @param username The username for the password. If it is null, it means 1423 * password can't be saved. 1424 * @param password The password 1425 */ 1426 public void setHttpAuthUsernamePassword(String host, String realm, 1427 String username, String password) { 1428 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1429 } 1430 1431 /** 1432 * Retrieve the HTTP authentication username and password for a given 1433 * host & realm pair 1434 * 1435 * @param host The host for which the credentials apply. 1436 * @param realm The realm for which the credentials apply. 1437 * @return String[] if found, String[0] is username, which can be null and 1438 * String[1] is password. Return null if it can't find anything. 1439 */ 1440 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1441 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1442 } 1443 1444 /** 1445 * Remove Find or Select ActionModes, if active. 1446 */ 1447 private void clearActionModes() { 1448 if (mSelectCallback != null) { 1449 mSelectCallback.finish(); 1450 } 1451 if (mFindCallback != null) { 1452 mFindCallback.finish(); 1453 } 1454 } 1455 1456 /** 1457 * Called to clear state when moving from one page to another, or changing 1458 * in some other way that makes elements associated with the current page 1459 * (such as WebTextView or ActionModes) no longer relevant. 1460 */ 1461 private void clearHelpers() { 1462 clearTextEntry(); 1463 clearActionModes(); 1464 dismissFullScreenMode(); 1465 } 1466 1467 /** 1468 * Destroy the internal state of the WebView. This method should be called 1469 * after the WebView has been removed from the view system. No other 1470 * methods may be called on a WebView after destroy. 1471 */ 1472 public void destroy() { 1473 clearHelpers(); 1474 if (mListBoxDialog != null) { 1475 mListBoxDialog.dismiss(); 1476 mListBoxDialog = null; 1477 } 1478 if (mNativeClass != 0) nativeStopGL(); 1479 if (mWebViewCore != null) { 1480 // Set the handlers to null before destroying WebViewCore so no 1481 // more messages will be posted. 1482 mCallbackProxy.setWebViewClient(null); 1483 mCallbackProxy.setWebChromeClient(null); 1484 // Tell WebViewCore to destroy itself 1485 synchronized (this) { 1486 WebViewCore webViewCore = mWebViewCore; 1487 mWebViewCore = null; // prevent using partial webViewCore 1488 webViewCore.destroy(); 1489 } 1490 // Remove any pending messages that might not be serviced yet. 1491 mPrivateHandler.removeCallbacksAndMessages(null); 1492 mCallbackProxy.removeCallbacksAndMessages(null); 1493 // Wake up the WebCore thread just in case it is waiting for a 1494 // JavaScript dialog. 1495 synchronized (mCallbackProxy) { 1496 mCallbackProxy.notify(); 1497 } 1498 } 1499 if (mNativeClass != 0) { 1500 nativeDestroy(); 1501 mNativeClass = 0; 1502 } 1503 } 1504 1505 /** 1506 * Enables platform notifications of data state and proxy changes. 1507 * @deprecated Obsolete - platform notifications are always enabled. 1508 */ 1509 @Deprecated 1510 public static void enablePlatformNotifications() { 1511 Network.enablePlatformNotifications(); 1512 } 1513 1514 /** 1515 * If platform notifications are enabled, this should be called 1516 * from the Activity's onPause() or onStop(). 1517 * @deprecated Obsolete - platform notifications are always enabled. 1518 */ 1519 @Deprecated 1520 public static void disablePlatformNotifications() { 1521 Network.disablePlatformNotifications(); 1522 } 1523 1524 /** 1525 * Sets JavaScript engine flags. 1526 * 1527 * @param flags JS engine flags in a String 1528 * 1529 * @hide pending API solidification 1530 */ 1531 public void setJsFlags(String flags) { 1532 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1533 } 1534 1535 /** 1536 * Inform WebView of the network state. This is used to set 1537 * the JavaScript property window.navigator.isOnline and 1538 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1539 * @param networkUp boolean indicating if network is available 1540 */ 1541 public void setNetworkAvailable(boolean networkUp) { 1542 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1543 networkUp ? 1 : 0, 0); 1544 } 1545 1546 /** 1547 * Inform WebView about the current network type. 1548 * {@hide} 1549 */ 1550 public void setNetworkType(String type, String subtype) { 1551 Map<String, String> map = new HashMap<String, String>(); 1552 map.put("type", type); 1553 map.put("subtype", subtype); 1554 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1555 } 1556 /** 1557 * Save the state of this WebView used in 1558 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1559 * method no longer stores the display data for this WebView. The previous 1560 * behavior could potentially leak files if {@link #restoreState} was never 1561 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1562 * and restoring the display data. 1563 * @param outState The Bundle to store the WebView state. 1564 * @return The same copy of the back/forward list used to save the state. If 1565 * saveState fails, the returned list will be null. 1566 * @see #savePicture 1567 * @see #restorePicture 1568 */ 1569 public WebBackForwardList saveState(Bundle outState) { 1570 if (outState == null) { 1571 return null; 1572 } 1573 // We grab a copy of the back/forward list because a client of WebView 1574 // may have invalidated the history list by calling clearHistory. 1575 WebBackForwardList list = copyBackForwardList(); 1576 final int currentIndex = list.getCurrentIndex(); 1577 final int size = list.getSize(); 1578 // We should fail saving the state if the list is empty or the index is 1579 // not in a valid range. 1580 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1581 return null; 1582 } 1583 outState.putInt("index", currentIndex); 1584 // FIXME: This should just be a byte[][] instead of ArrayList but 1585 // Parcel.java does not have the code to handle multi-dimensional 1586 // arrays. 1587 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1588 for (int i = 0; i < size; i++) { 1589 WebHistoryItem item = list.getItemAtIndex(i); 1590 if (null == item) { 1591 // FIXME: this shouldn't happen 1592 // need to determine how item got set to null 1593 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1594 return null; 1595 } 1596 byte[] data = item.getFlattenedData(); 1597 if (data == null) { 1598 // It would be very odd to not have any data for a given history 1599 // item. And we will fail to rebuild the history list without 1600 // flattened data. 1601 return null; 1602 } 1603 history.add(data); 1604 } 1605 outState.putSerializable("history", history); 1606 if (mCertificate != null) { 1607 outState.putBundle("certificate", 1608 SslCertificate.saveState(mCertificate)); 1609 } 1610 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1611 mZoomManager.saveZoomState(outState); 1612 return list; 1613 } 1614 1615 /** 1616 * Save the current display data to the Bundle given. Used in conjunction 1617 * with {@link #saveState}. 1618 * @param b A Bundle to store the display data. 1619 * @param dest The file to store the serialized picture data. Will be 1620 * overwritten with this WebView's picture data. 1621 * @return True if the picture was successfully saved. 1622 * @deprecated This method is now obsolete. 1623 */ 1624 @Deprecated 1625 public boolean savePicture(Bundle b, final File dest) { 1626 if (dest == null || b == null) { 1627 return false; 1628 } 1629 final Picture p = capturePicture(); 1630 // Use a temporary file while writing to ensure the destination file 1631 // contains valid data. 1632 final File temp = new File(dest.getPath() + ".writing"); 1633 new Thread(new Runnable() { 1634 public void run() { 1635 FileOutputStream out = null; 1636 try { 1637 out = new FileOutputStream(temp); 1638 p.writeToStream(out); 1639 // Writing the picture succeeded, rename the temporary file 1640 // to the destination. 1641 temp.renameTo(dest); 1642 } catch (Exception e) { 1643 // too late to do anything about it. 1644 } finally { 1645 if (out != null) { 1646 try { 1647 out.close(); 1648 } catch (Exception e) { 1649 // Can't do anything about that 1650 } 1651 } 1652 temp.delete(); 1653 } 1654 } 1655 }).start(); 1656 // now update the bundle 1657 b.putInt("scrollX", mScrollX); 1658 b.putInt("scrollY", mScrollY); 1659 mZoomManager.saveZoomState(b); 1660 return true; 1661 } 1662 1663 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1664 int sx = b.getInt("scrollX", 0); 1665 int sy = b.getInt("scrollY", 0); 1666 1667 mDrawHistory = true; 1668 mHistoryPicture = p; 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 * @deprecated This method is now obsolete. 1686 */ 1687 @Deprecated 1688 public boolean restorePicture(Bundle b, File src) { 1689 if (src == null || b == null) { 1690 return false; 1691 } 1692 if (!src.exists()) { 1693 return false; 1694 } 1695 try { 1696 final FileInputStream in = new FileInputStream(src); 1697 final Bundle copy = new Bundle(b); 1698 new Thread(new Runnable() { 1699 public void run() { 1700 try { 1701 final Picture p = Picture.createFromStream(in); 1702 if (p != null) { 1703 // Post a runnable on the main thread to update the 1704 // history picture fields. 1705 mPrivateHandler.post(new Runnable() { 1706 public void run() { 1707 restoreHistoryPictureFields(p, copy); 1708 } 1709 }); 1710 } 1711 } finally { 1712 try { 1713 in.close(); 1714 } catch (Exception e) { 1715 // Nothing we can do now. 1716 } 1717 } 1718 } 1719 }).start(); 1720 } catch (FileNotFoundException e){ 1721 e.printStackTrace(); 1722 } 1723 return true; 1724 } 1725 1726 /** 1727 * Restore the state of this WebView from the given map used in 1728 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1729 * be called to restore the state of the WebView before using the object. If 1730 * it is called after the WebView has had a chance to build state (load 1731 * pages, create a back/forward list, etc.) there may be undesirable 1732 * side-effects. Please note that this method no longer restores the 1733 * display data for this WebView. See {@link #savePicture} and {@link 1734 * #restorePicture} for saving and restoring the display data. 1735 * @param inState The incoming Bundle of state. 1736 * @return The restored back/forward list or null if restoreState failed. 1737 * @see #savePicture 1738 * @see #restorePicture 1739 */ 1740 public WebBackForwardList restoreState(Bundle inState) { 1741 WebBackForwardList returnList = null; 1742 if (inState == null) { 1743 return returnList; 1744 } 1745 if (inState.containsKey("index") && inState.containsKey("history")) { 1746 mCertificate = SslCertificate.restoreState( 1747 inState.getBundle("certificate")); 1748 1749 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1750 final int index = inState.getInt("index"); 1751 // We can't use a clone of the list because we need to modify the 1752 // shared copy, so synchronize instead to prevent concurrent 1753 // modifications. 1754 synchronized (list) { 1755 final List<byte[]> history = 1756 (List<byte[]>) inState.getSerializable("history"); 1757 final int size = history.size(); 1758 // Check the index bounds so we don't crash in native code while 1759 // restoring the history index. 1760 if (index < 0 || index >= size) { 1761 return null; 1762 } 1763 for (int i = 0; i < size; i++) { 1764 byte[] data = history.remove(0); 1765 if (data == null) { 1766 // If we somehow have null data, we cannot reconstruct 1767 // the item and thus our history list cannot be rebuilt. 1768 return null; 1769 } 1770 WebHistoryItem item = new WebHistoryItem(data); 1771 list.addHistoryItem(item); 1772 } 1773 // Grab the most recent copy to return to the caller. 1774 returnList = copyBackForwardList(); 1775 // Update the copy to have the correct index. 1776 returnList.setCurrentIndex(index); 1777 } 1778 // Restore private browsing setting. 1779 if (inState.getBoolean("privateBrowsingEnabled")) { 1780 getSettings().setPrivateBrowsingEnabled(true); 1781 } 1782 mZoomManager.restoreZoomState(inState); 1783 // Remove all pending messages because we are restoring previous 1784 // state. 1785 mWebViewCore.removeMessages(); 1786 // Send a restore state message. 1787 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1788 } 1789 return returnList; 1790 } 1791 1792 /** 1793 * Load the given url with the extra headers. 1794 * @param url The url of the resource to load. 1795 * @param extraHeaders The extra headers sent with this url. This should not 1796 * include the common headers like "user-agent". If it does, it 1797 * will be replaced by the intrinsic value of the WebView. 1798 */ 1799 public void loadUrl(String url, Map<String, String> extraHeaders) { 1800 switchOutDrawHistory(); 1801 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1802 arg.mUrl = url; 1803 arg.mExtraHeaders = extraHeaders; 1804 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1805 clearHelpers(); 1806 } 1807 1808 /** 1809 * Load the given url. 1810 * @param url The url of the resource to load. 1811 */ 1812 public void loadUrl(String url) { 1813 if (url == null) { 1814 return; 1815 } 1816 loadUrl(url, null); 1817 } 1818 1819 /** 1820 * Load the url with postData using "POST" method into the WebView. If url 1821 * is not a network url, it will be loaded with {link 1822 * {@link #loadUrl(String)} instead. 1823 * 1824 * @param url The url of the resource to load. 1825 * @param postData The data will be passed to "POST" request. 1826 */ 1827 public void postUrl(String url, byte[] postData) { 1828 if (URLUtil.isNetworkUrl(url)) { 1829 switchOutDrawHistory(); 1830 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1831 arg.mUrl = url; 1832 arg.mPostData = postData; 1833 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1834 clearHelpers(); 1835 } else { 1836 loadUrl(url); 1837 } 1838 } 1839 1840 /** 1841 * Load the given data into the WebView. This will load the data into 1842 * WebView using the data: scheme. Content loaded through this mechanism 1843 * does not have the ability to load content from the network. 1844 * @param data A String of data in the given encoding. The date must 1845 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1846 * %27, %3f respectively. 1847 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1848 * @param encoding The encoding of the data. i.e. utf-8, base64 1849 */ 1850 public void loadData(String data, String mimeType, String encoding) { 1851 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1852 } 1853 1854 /** 1855 * Load the given data into the WebView, use the provided URL as the base 1856 * URL for the content. The base URL is the URL that represents the page 1857 * that is loaded through this interface. As such, it is used to resolve any 1858 * relative URLs. The historyUrl is used for the history entry. 1859 * <p> 1860 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1861 * files through "file:///android_asset/" for the sub resources is more 1862 * restricted. If you provide null or empty string as baseUrl, you won't be 1863 * able to access asset files. If the baseUrl is anything other than 1864 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1865 * sub resources. 1866 * 1867 * @param baseUrl Url to resolve relative paths with, if null defaults to 1868 * "about:blank" 1869 * @param data A String of data in the given encoding. 1870 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1871 * defaults to "text/html" 1872 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1873 * @param historyUrl URL to use as the history entry. Can be null. 1874 */ 1875 public void loadDataWithBaseURL(String baseUrl, String data, 1876 String mimeType, String encoding, String historyUrl) { 1877 1878 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1879 loadData(data, mimeType, encoding); 1880 return; 1881 } 1882 switchOutDrawHistory(); 1883 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1884 arg.mBaseUrl = baseUrl; 1885 arg.mData = data; 1886 arg.mMimeType = mimeType; 1887 arg.mEncoding = encoding; 1888 arg.mHistoryUrl = historyUrl; 1889 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1890 clearHelpers(); 1891 } 1892 1893 /** 1894 * Saves the current view as a web archive. 1895 * 1896 * @param filename The filename where the archive should be placed. 1897 */ 1898 public void saveWebArchive(String filename) { 1899 saveWebArchive(filename, false, null); 1900 } 1901 1902 /* package */ static class SaveWebArchiveMessage { 1903 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1904 mBasename = basename; 1905 mAutoname = autoname; 1906 mCallback = callback; 1907 } 1908 1909 /* package */ final String mBasename; 1910 /* package */ final boolean mAutoname; 1911 /* package */ final ValueCallback<String> mCallback; 1912 /* package */ String mResultFile; 1913 } 1914 1915 /** 1916 * Saves the current view as a web archive. 1917 * 1918 * @param basename The filename where the archive should be placed. 1919 * @param autoname If false, takes basename to be a file. If true, basename 1920 * is assumed to be a directory in which a filename will be 1921 * chosen according to the url of the current page. 1922 * @param callback Called after the web archive has been saved. The 1923 * parameter for onReceiveValue will either be the filename 1924 * under which the file was saved, or null if saving the 1925 * file failed. 1926 */ 1927 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1928 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1929 new SaveWebArchiveMessage(basename, autoname, callback)); 1930 } 1931 1932 /** 1933 * Stop the current load. 1934 */ 1935 public void stopLoading() { 1936 // TODO: should we clear all the messages in the queue before sending 1937 // STOP_LOADING? 1938 switchOutDrawHistory(); 1939 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1940 } 1941 1942 /** 1943 * Reload the current url. 1944 */ 1945 public void reload() { 1946 clearHelpers(); 1947 switchOutDrawHistory(); 1948 mWebViewCore.sendMessage(EventHub.RELOAD); 1949 } 1950 1951 /** 1952 * Return true if this WebView has a back history item. 1953 * @return True iff this WebView has a back history item. 1954 */ 1955 public boolean canGoBack() { 1956 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1957 synchronized (l) { 1958 if (l.getClearPending()) { 1959 return false; 1960 } else { 1961 return l.getCurrentIndex() > 0; 1962 } 1963 } 1964 } 1965 1966 /** 1967 * Go back in the history of this WebView. 1968 */ 1969 public void goBack() { 1970 goBackOrForward(-1); 1971 } 1972 1973 /** 1974 * Return true if this WebView has a forward history item. 1975 * @return True iff this Webview has a forward history item. 1976 */ 1977 public boolean canGoForward() { 1978 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1979 synchronized (l) { 1980 if (l.getClearPending()) { 1981 return false; 1982 } else { 1983 return l.getCurrentIndex() < l.getSize() - 1; 1984 } 1985 } 1986 } 1987 1988 /** 1989 * Go forward in the history of this WebView. 1990 */ 1991 public void goForward() { 1992 goBackOrForward(1); 1993 } 1994 1995 /** 1996 * Return true if the page can go back or forward the given 1997 * number of steps. 1998 * @param steps The negative or positive number of steps to move the 1999 * history. 2000 */ 2001 public boolean canGoBackOrForward(int steps) { 2002 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2003 synchronized (l) { 2004 if (l.getClearPending()) { 2005 return false; 2006 } else { 2007 int newIndex = l.getCurrentIndex() + steps; 2008 return newIndex >= 0 && newIndex < l.getSize(); 2009 } 2010 } 2011 } 2012 2013 /** 2014 * Go to the history item that is the number of steps away from 2015 * the current item. Steps is negative if backward and positive 2016 * if forward. 2017 * @param steps The number of steps to take back or forward in the back 2018 * forward list. 2019 */ 2020 public void goBackOrForward(int steps) { 2021 goBackOrForward(steps, false); 2022 } 2023 2024 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2025 if (steps != 0) { 2026 clearHelpers(); 2027 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2028 ignoreSnapshot ? 1 : 0); 2029 } 2030 } 2031 2032 /** 2033 * Returns true if private browsing is enabled in this WebView. 2034 */ 2035 public boolean isPrivateBrowsingEnabled() { 2036 return getSettings().isPrivateBrowsingEnabled(); 2037 } 2038 2039 private void startPrivateBrowsing() { 2040 getSettings().setPrivateBrowsingEnabled(true); 2041 } 2042 2043 private boolean extendScroll(int y) { 2044 int finalY = mScroller.getFinalY(); 2045 int newY = pinLocY(finalY + y); 2046 if (newY == finalY) return false; 2047 mScroller.setFinalY(newY); 2048 mScroller.extendDuration(computeDuration(0, y)); 2049 return true; 2050 } 2051 2052 /** 2053 * Scroll the contents of the view up by half the view size 2054 * @param top true to jump to the top of the page 2055 * @return true if the page was scrolled 2056 */ 2057 public boolean pageUp(boolean top) { 2058 if (mNativeClass == 0) { 2059 return false; 2060 } 2061 nativeClearCursor(); // start next trackball movement from page edge 2062 if (top) { 2063 // go to the top of the document 2064 return pinScrollTo(mScrollX, 0, true, 0); 2065 } 2066 // Page up 2067 int h = getHeight(); 2068 int y; 2069 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2070 y = -h + PAGE_SCROLL_OVERLAP; 2071 } else { 2072 y = -h / 2; 2073 } 2074 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2075 : extendScroll(y); 2076 } 2077 2078 /** 2079 * Scroll the contents of the view down by half the page size 2080 * @param bottom true to jump to bottom of page 2081 * @return true if the page was scrolled 2082 */ 2083 public boolean pageDown(boolean bottom) { 2084 if (mNativeClass == 0) { 2085 return false; 2086 } 2087 nativeClearCursor(); // start next trackball movement from page edge 2088 if (bottom) { 2089 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2090 } 2091 // Page down. 2092 int h = getHeight(); 2093 int y; 2094 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2095 y = h - PAGE_SCROLL_OVERLAP; 2096 } else { 2097 y = h / 2; 2098 } 2099 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2100 : extendScroll(y); 2101 } 2102 2103 /** 2104 * Clear the view so that onDraw() will draw nothing but white background, 2105 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2106 */ 2107 public void clearView() { 2108 mContentWidth = 0; 2109 mContentHeight = 0; 2110 setBaseLayer(0, null, false); 2111 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2112 } 2113 2114 /** 2115 * Return a new picture that captures the current display of the webview. 2116 * This is a copy of the display, and will be unaffected if the webview 2117 * later loads a different URL. 2118 * 2119 * @return a picture containing the current contents of the view. Note this 2120 * picture is of the entire document, and is not restricted to the 2121 * bounds of the view. 2122 */ 2123 public Picture capturePicture() { 2124 if (mNativeClass == 0) return null; 2125 Picture result = new Picture(); 2126 nativeCopyBaseContentToPicture(result); 2127 return result; 2128 } 2129 2130 /** 2131 * Return true if the browser is displaying a TextView for text input. 2132 */ 2133 private boolean inEditingMode() { 2134 return mWebTextView != null && mWebTextView.getParent() != null; 2135 } 2136 2137 /** 2138 * Remove the WebTextView. 2139 */ 2140 private void clearTextEntry() { 2141 if (inEditingMode()) { 2142 mWebTextView.remove(); 2143 } else { 2144 // The keyboard may be open with the WebView as the served view 2145 hideSoftKeyboard(); 2146 } 2147 } 2148 2149 /** 2150 * Return the current scale of the WebView 2151 * @return The current scale. 2152 */ 2153 public float getScale() { 2154 return mZoomManager.getScale(); 2155 } 2156 2157 /** 2158 * Set the initial scale for the WebView. 0 means default. If 2159 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2160 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2161 * WebView starts will this value as initial scale. 2162 * 2163 * @param scaleInPercent The initial scale in percent. 2164 */ 2165 public void setInitialScale(int scaleInPercent) { 2166 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2167 } 2168 2169 /** 2170 * Invoke the graphical zoom picker widget for this WebView. This will 2171 * result in the zoom widget appearing on the screen to control the zoom 2172 * level of this WebView. 2173 */ 2174 public void invokeZoomPicker() { 2175 if (!getSettings().supportZoom()) { 2176 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2177 return; 2178 } 2179 clearHelpers(); 2180 mZoomManager.invokeZoomPicker(); 2181 } 2182 2183 /** 2184 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2185 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2186 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2187 * anchor does not have a url or if it is a JavaScript url, the type will 2188 * be UNKNOWN_TYPE and the url has to be retrieved through 2189 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2190 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2191 * the "extra" field. A type of 2192 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2193 * a child node. If a phone number is found, the HitTestResult type is set 2194 * to PHONE_TYPE and the phone number is set in the "extra" field of 2195 * HitTestResult. If a map address is found, the HitTestResult type is set 2196 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2197 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2198 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2199 * HitTestResult type is set to UNKNOWN_TYPE. 2200 */ 2201 public HitTestResult getHitTestResult() { 2202 return hitTestResult(mInitialHitTestResult); 2203 } 2204 2205 private HitTestResult hitTestResult(HitTestResult fallback) { 2206 if (mNativeClass == 0) { 2207 return null; 2208 } 2209 2210 HitTestResult result = new HitTestResult(); 2211 if (nativeHasCursorNode()) { 2212 if (nativeCursorIsTextInput()) { 2213 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2214 } else { 2215 String text = nativeCursorText(); 2216 if (text != null) { 2217 if (text.startsWith(SCHEME_TEL)) { 2218 result.setType(HitTestResult.PHONE_TYPE); 2219 result.setExtra(text.substring(SCHEME_TEL.length())); 2220 } else if (text.startsWith(SCHEME_MAILTO)) { 2221 result.setType(HitTestResult.EMAIL_TYPE); 2222 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2223 } else if (text.startsWith(SCHEME_GEO)) { 2224 result.setType(HitTestResult.GEO_TYPE); 2225 result.setExtra(URLDecoder.decode(text 2226 .substring(SCHEME_GEO.length()))); 2227 } else if (nativeCursorIsAnchor()) { 2228 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2229 result.setExtra(text); 2230 } 2231 } 2232 } 2233 } else if (fallback != null) { 2234 /* If webkit causes a rebuild while the long press is in progress, 2235 * the cursor node may be reset, even if it is still around. This 2236 * uses the cursor node saved when the touch began. Since the 2237 * nativeImageURI below only changes the result if it is successful, 2238 * this uses the data beneath the touch if available or the original 2239 * tap data otherwise. 2240 */ 2241 Log.v(LOGTAG, "hitTestResult use fallback"); 2242 result = fallback; 2243 } 2244 int type = result.getType(); 2245 if (type == HitTestResult.UNKNOWN_TYPE 2246 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2247 // Now check to see if it is an image. 2248 int contentX = viewToContentX(mLastTouchX + mScrollX); 2249 int contentY = viewToContentY(mLastTouchY + mScrollY); 2250 String text = nativeImageURI(contentX, contentY); 2251 if (text != null) { 2252 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2253 HitTestResult.IMAGE_TYPE : 2254 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2255 result.setExtra(text); 2256 } 2257 } 2258 return result; 2259 } 2260 2261 // Called by JNI when the DOM has changed the focus. Clear the focus so 2262 // that new keys will go to the newly focused field 2263 private void domChangedFocus() { 2264 if (inEditingMode()) { 2265 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2266 } 2267 } 2268 /** 2269 * Request the anchor or image element URL at the last tapped point. 2270 * If hrefMsg is null, this method returns immediately and does not 2271 * dispatch hrefMsg to its target. If the tapped point hits an image, 2272 * an anchor, or an image in an anchor, the message associates 2273 * strings in named keys in its data. The value paired with the key 2274 * may be an empty string. 2275 * 2276 * @param hrefMsg This message will be dispatched with the result of the 2277 * request. The message data contains three keys: 2278 * - "url" returns the anchor's href attribute. 2279 * - "title" returns the anchor's text. 2280 * - "src" returns the image's src attribute. 2281 */ 2282 public void requestFocusNodeHref(Message hrefMsg) { 2283 if (hrefMsg == null) { 2284 return; 2285 } 2286 int contentX = viewToContentX(mLastTouchX + mScrollX); 2287 int contentY = viewToContentY(mLastTouchY + mScrollY); 2288 if (nativeHasCursorNode()) { 2289 Rect cursorBounds = nativeGetCursorRingBounds(); 2290 if (!cursorBounds.contains(contentX, contentY)) { 2291 int slop = viewToContentDimension(mNavSlop); 2292 cursorBounds.inset(-slop, -slop); 2293 if (cursorBounds.contains(contentX, contentY)) { 2294 contentX = (int) cursorBounds.centerX(); 2295 contentY = (int) cursorBounds.centerY(); 2296 } 2297 } 2298 } 2299 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2300 contentX, contentY, hrefMsg); 2301 } 2302 2303 /** 2304 * Request the url of the image last touched by the user. msg will be sent 2305 * to its target with a String representing the url as its object. 2306 * 2307 * @param msg This message will be dispatched with the result of the request 2308 * as the data member with "url" as key. The result can be null. 2309 */ 2310 public void requestImageRef(Message msg) { 2311 if (0 == mNativeClass) return; // client isn't initialized 2312 int contentX = viewToContentX(mLastTouchX + mScrollX); 2313 int contentY = viewToContentY(mLastTouchY + mScrollY); 2314 String ref = nativeImageURI(contentX, contentY); 2315 Bundle data = msg.getData(); 2316 data.putString("url", ref); 2317 msg.setData(data); 2318 msg.sendToTarget(); 2319 } 2320 2321 static int pinLoc(int x, int viewMax, int docMax) { 2322// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2323 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2324 // pin the short document to the top/left of the screen 2325 x = 0; 2326// Log.d(LOGTAG, "--- center " + x); 2327 } else if (x < 0) { 2328 x = 0; 2329// Log.d(LOGTAG, "--- zero"); 2330 } else if (x + viewMax > docMax) { 2331 x = docMax - viewMax; 2332// Log.d(LOGTAG, "--- pin " + x); 2333 } 2334 return x; 2335 } 2336 2337 // Expects x in view coordinates 2338 int pinLocX(int x) { 2339 if (mInOverScrollMode) return x; 2340 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2341 } 2342 2343 // Expects y in view coordinates 2344 int pinLocY(int y) { 2345 if (mInOverScrollMode) return y; 2346 return pinLoc(y, getViewHeightWithTitle(), 2347 computeRealVerticalScrollRange() + getTitleHeight()); 2348 } 2349 2350 /** 2351 * A title bar which is embedded in this WebView, and scrolls along with it 2352 * vertically, but not horizontally. 2353 */ 2354 private View mTitleBar; 2355 2356 /** 2357 * the title bar rendering gravity 2358 */ 2359 private int mTitleGravity; 2360 2361 /** 2362 * Add or remove a title bar to be embedded into the WebView, and scroll 2363 * along with it vertically, while remaining in view horizontally. Pass 2364 * null to remove the title bar from the WebView, and return to drawing 2365 * the WebView normally without translating to account for the title bar. 2366 * @hide 2367 */ 2368 public void setEmbeddedTitleBar(View v) { 2369 if (mTitleBar == v) return; 2370 if (mTitleBar != null) { 2371 removeView(mTitleBar); 2372 } 2373 if (null != v) { 2374 addView(v, new AbsoluteLayout.LayoutParams( 2375 ViewGroup.LayoutParams.MATCH_PARENT, 2376 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2377 } 2378 mTitleBar = v; 2379 } 2380 2381 /** 2382 * Set where to render the embedded title bar 2383 * NO_GRAVITY at the top of the page 2384 * TOP at the top of the screen 2385 * @hide 2386 */ 2387 public void setTitleBarGravity(int gravity) { 2388 mTitleGravity = gravity; 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 } 2906 } 2907 2908 /** 2909 * Call this to resume a WebView after a previous call to onPause(). 2910 */ 2911 public void onResume() { 2912 if (mIsPaused) { 2913 mIsPaused = false; 2914 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2915 } 2916 } 2917 2918 /** 2919 * Returns true if the view is paused, meaning onPause() was called. Calling 2920 * onResume() sets the paused state back to false. 2921 * @hide 2922 */ 2923 public boolean isPaused() { 2924 return mIsPaused; 2925 } 2926 2927 /** 2928 * Call this to inform the view that memory is low so that it can 2929 * free any available memory. 2930 */ 2931 public void freeMemory() { 2932 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2933 } 2934 2935 /** 2936 * Clear the resource cache. Note that the cache is per-application, so 2937 * this will clear the cache for all WebViews used. 2938 * 2939 * @param includeDiskFiles If false, only the RAM cache is cleared. 2940 */ 2941 public void clearCache(boolean includeDiskFiles) { 2942 // Note: this really needs to be a static method as it clears cache for all 2943 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2944 // we can't make this static. 2945 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2946 includeDiskFiles ? 1 : 0, 0); 2947 } 2948 2949 /** 2950 * Make sure that clearing the form data removes the adapter from the 2951 * currently focused textfield if there is one. 2952 */ 2953 public void clearFormData() { 2954 if (inEditingMode()) { 2955 AutoCompleteAdapter adapter = null; 2956 mWebTextView.setAdapterCustom(adapter); 2957 } 2958 } 2959 2960 /** 2961 * Tell the WebView to clear its internal back/forward list. 2962 */ 2963 public void clearHistory() { 2964 mCallbackProxy.getBackForwardList().setClearPending(); 2965 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2966 } 2967 2968 /** 2969 * Clear the SSL preferences table stored in response to proceeding with SSL 2970 * certificate errors. 2971 */ 2972 public void clearSslPreferences() { 2973 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2974 } 2975 2976 /** 2977 * Return the WebBackForwardList for this WebView. This contains the 2978 * back/forward list for use in querying each item in the history stack. 2979 * This is a copy of the private WebBackForwardList so it contains only a 2980 * snapshot of the current state. Multiple calls to this method may return 2981 * different objects. The object returned from this method will not be 2982 * updated to reflect any new state. 2983 */ 2984 public WebBackForwardList copyBackForwardList() { 2985 return mCallbackProxy.getBackForwardList().clone(); 2986 } 2987 2988 /* 2989 * Highlight and scroll to the next occurance of String in findAll. 2990 * Wraps the page infinitely, and scrolls. Must be called after 2991 * calling findAll. 2992 * 2993 * @param forward Direction to search. 2994 */ 2995 public void findNext(boolean forward) { 2996 if (0 == mNativeClass) return; // client isn't initialized 2997 nativeFindNext(forward); 2998 } 2999 3000 /* 3001 * Find all instances of find on the page and highlight them. 3002 * @param find String to find. 3003 * @return int The number of occurances of the String "find" 3004 * that were found. 3005 */ 3006 public int findAll(String find) { 3007 if (0 == mNativeClass) return 0; // client isn't initialized 3008 int result = find != null ? nativeFindAll(find.toLowerCase(), 3009 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3010 invalidate(); 3011 mLastFind = find; 3012 return result; 3013 } 3014 3015 /** 3016 * Start an ActionMode for finding text in this WebView. 3017 * @param text If non-null, will be the initial text to search for. 3018 * Otherwise, the last String searched for in this WebView will 3019 * be used to start. 3020 * @param showIme If true, show the IME, assuming the user will begin typing. 3021 * If false and text is non-null, perform a find all. 3022 * @return boolean True if the find dialog is shown, false otherwise. 3023 */ 3024 public boolean showFindDialog(String text, boolean showIme) { 3025 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3026 if (startActionMode(callback) == null) { 3027 // Could not start the action mode, so end Find on page 3028 return false; 3029 } 3030 mFindCallback = callback; 3031 setFindIsUp(true); 3032 mFindCallback.setWebView(this); 3033 if (showIme) { 3034 mFindCallback.showSoftInput(); 3035 } else if (text != null) { 3036 mFindCallback.setText(text); 3037 mFindCallback.findAll(); 3038 return true; 3039 } 3040 if (text == null) { 3041 text = mLastFind; 3042 } 3043 if (text != null) { 3044 mFindCallback.setText(text); 3045 } 3046 return true; 3047 } 3048 3049 /** 3050 * Keep track of the find callback so that we can remove its titlebar if 3051 * necessary. 3052 */ 3053 private FindActionModeCallback mFindCallback; 3054 3055 /** 3056 * Toggle whether the find dialog is showing, for both native and Java. 3057 */ 3058 private void setFindIsUp(boolean isUp) { 3059 mFindIsUp = isUp; 3060 if (0 == mNativeClass) return; // client isn't initialized 3061 nativeSetFindIsUp(isUp); 3062 } 3063 3064 /** 3065 * Return the index of the currently highlighted match. 3066 */ 3067 int findIndex() { 3068 if (0 == mNativeClass) return -1; 3069 return nativeFindIndex(); 3070 } 3071 3072 // Used to know whether the find dialog is open. Affects whether 3073 // or not we draw the highlights for matches. 3074 private boolean mFindIsUp; 3075 3076 // Keep track of the last string sent, so we can search again when find is 3077 // reopened. 3078 private String mLastFind; 3079 3080 /** 3081 * Return the first substring consisting of the address of a physical 3082 * location. Currently, only addresses in the United States are detected, 3083 * and consist of: 3084 * - a house number 3085 * - a street name 3086 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3087 * - a city name 3088 * - a state or territory, either spelled out or two-letter abbr. 3089 * - an optional 5 digit or 9 digit zip code. 3090 * 3091 * All names must be correctly capitalized, and the zip code, if present, 3092 * must be valid for the state. The street type must be a standard USPS 3093 * spelling or abbreviation. The state or territory must also be spelled 3094 * or abbreviated using USPS standards. The house number may not exceed 3095 * five digits. 3096 * @param addr The string to search for addresses. 3097 * 3098 * @return the address, or if no address is found, return null. 3099 */ 3100 public static String findAddress(String addr) { 3101 return findAddress(addr, false); 3102 } 3103 3104 /** 3105 * @hide 3106 * Return the first substring consisting of the address of a physical 3107 * location. Currently, only addresses in the United States are detected, 3108 * and consist of: 3109 * - a house number 3110 * - a street name 3111 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3112 * - a city name 3113 * - a state or territory, either spelled out or two-letter abbr. 3114 * - an optional 5 digit or 9 digit zip code. 3115 * 3116 * Names are optionally capitalized, and the zip code, if present, 3117 * must be valid for the state. The street type must be a standard USPS 3118 * spelling or abbreviation. The state or territory must also be spelled 3119 * or abbreviated using USPS standards. The house number may not exceed 3120 * five digits. 3121 * @param addr The string to search for addresses. 3122 * @param caseInsensitive addr Set to true to make search ignore case. 3123 * 3124 * @return the address, or if no address is found, return null. 3125 */ 3126 public static String findAddress(String addr, boolean caseInsensitive) { 3127 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3128 } 3129 3130 /* 3131 * Clear the highlighting surrounding text matches created by findAll. 3132 */ 3133 public void clearMatches() { 3134 if (mNativeClass == 0) 3135 return; 3136 nativeSetFindIsEmpty(); 3137 invalidate(); 3138 } 3139 3140 /** 3141 * Called when the find ActionMode ends. 3142 */ 3143 void notifyFindDialogDismissed() { 3144 mFindCallback = null; 3145 if (mWebViewCore == null) { 3146 return; 3147 } 3148 clearMatches(); 3149 setFindIsUp(false); 3150 // Now that the dialog has been removed, ensure that we scroll to a 3151 // location that is not beyond the end of the page. 3152 pinScrollTo(mScrollX, mScrollY, false, 0); 3153 invalidate(); 3154 } 3155 3156 /** 3157 * Query the document to see if it contains any image references. The 3158 * message object will be dispatched with arg1 being set to 1 if images 3159 * were found and 0 if the document does not reference any images. 3160 * @param response The message that will be dispatched with the result. 3161 */ 3162 public void documentHasImages(Message response) { 3163 if (response == null) { 3164 return; 3165 } 3166 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3167 } 3168 3169 /** 3170 * Request the scroller to abort any ongoing animation 3171 * 3172 * @hide 3173 */ 3174 public void stopScroll() { 3175 mScroller.forceFinished(true); 3176 mLastVelocity = 0; 3177 } 3178 3179 @Override 3180 public void computeScroll() { 3181 if (mScroller.computeScrollOffset()) { 3182 int oldX = mScrollX; 3183 int oldY = mScrollY; 3184 int x = mScroller.getCurrX(); 3185 int y = mScroller.getCurrY(); 3186 invalidate(); // So we draw again 3187 3188 if (!mScroller.isFinished()) { 3189 int rangeX = computeMaxScrollX(); 3190 int rangeY = computeMaxScrollY(); 3191 int overflingDistance = mOverflingDistance; 3192 3193 // Use the layer's scroll data if needed. 3194 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3195 oldX = mScrollingLayerRect.left; 3196 oldY = mScrollingLayerRect.top; 3197 rangeX = mScrollingLayerRect.right; 3198 rangeY = mScrollingLayerRect.bottom; 3199 // No overscrolling for layers. 3200 overflingDistance = 0; 3201 } 3202 3203 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3204 rangeX, rangeY, 3205 overflingDistance, overflingDistance, false); 3206 3207 if (mOverScrollGlow != null) { 3208 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3209 } 3210 } else { 3211 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3212 mScrollX = x; 3213 mScrollY = y; 3214 } else { 3215 // Update the layer position instead of WebView. 3216 nativeScrollLayer(mScrollingLayer, x, y); 3217 mScrollingLayerRect.left = x; 3218 mScrollingLayerRect.top = y; 3219 } 3220 abortAnimation(); 3221 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3222 WebViewCore.resumePriority(); 3223 if (!mSelectingText) { 3224 WebViewCore.resumeUpdatePicture(mWebViewCore); 3225 } 3226 if (oldX != mScrollX || oldY != mScrollY) { 3227 sendOurVisibleRect(); 3228 } 3229 } 3230 } else { 3231 super.computeScroll(); 3232 } 3233 } 3234 3235 private static int computeDuration(int dx, int dy) { 3236 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3237 int duration = distance * 1000 / STD_SPEED; 3238 return Math.min(duration, MAX_DURATION); 3239 } 3240 3241 // helper to pin the scrollBy parameters (already in view coordinates) 3242 // returns true if the scroll was changed 3243 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3244 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3245 } 3246 // helper to pin the scrollTo parameters (already in view coordinates) 3247 // returns true if the scroll was changed 3248 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3249 x = pinLocX(x); 3250 y = pinLocY(y); 3251 int dx = x - mScrollX; 3252 int dy = y - mScrollY; 3253 3254 if ((dx | dy) == 0) { 3255 return false; 3256 } 3257 abortAnimation(); 3258 if (animate) { 3259 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3260 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3261 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3262 awakenScrollBars(mScroller.getDuration()); 3263 invalidate(); 3264 } else { 3265 scrollTo(x, y); 3266 } 3267 return true; 3268 } 3269 3270 // Scale from content to view coordinates, and pin. 3271 // Also called by jni webview.cpp 3272 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3273 if (mDrawHistory) { 3274 // disallow WebView to change the scroll position as History Picture 3275 // is used in the view system. 3276 // TODO: as we switchOutDrawHistory when trackball or navigation 3277 // keys are hit, this should be safe. Right? 3278 return false; 3279 } 3280 cx = contentToViewDimension(cx); 3281 cy = contentToViewDimension(cy); 3282 if (mHeightCanMeasure) { 3283 // move our visible rect according to scroll request 3284 if (cy != 0) { 3285 Rect tempRect = new Rect(); 3286 calcOurVisibleRect(tempRect); 3287 tempRect.offset(cx, cy); 3288 requestRectangleOnScreen(tempRect); 3289 } 3290 // FIXME: We scroll horizontally no matter what because currently 3291 // ScrollView and ListView will not scroll horizontally. 3292 // FIXME: Why do we only scroll horizontally if there is no 3293 // vertical scroll? 3294// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3295 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3296 } else { 3297 return pinScrollBy(cx, cy, animate, 0); 3298 } 3299 } 3300 3301 /** 3302 * Called by CallbackProxy when the page starts loading. 3303 * @param url The URL of the page which has started loading. 3304 */ 3305 /* package */ void onPageStarted(String url) { 3306 // every time we start a new page, we want to reset the 3307 // WebView certificate: if the new site is secure, we 3308 // will reload it and get a new certificate set; 3309 // if the new site is not secure, the certificate must be 3310 // null, and that will be the case 3311 setCertificate(null); 3312 3313 // reset the flag since we set to true in if need after 3314 // loading is see onPageFinished(Url) 3315 mAccessibilityScriptInjected = false; 3316 } 3317 3318 /** 3319 * Called by CallbackProxy when the page finishes loading. 3320 * @param url The URL of the page which has finished loading. 3321 */ 3322 /* package */ void onPageFinished(String url) { 3323 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3324 // If the user is now on a different page, or has scrolled the page 3325 // past the point where the title bar is offscreen, ignore the 3326 // scroll request. 3327 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3328 && mScrollX == 0 && mScrollY == 0) { 3329 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3330 SLIDE_TITLE_DURATION); 3331 } 3332 mPageThatNeedsToSlideTitleBarOffScreen = null; 3333 } 3334 mZoomManager.onPageFinished(url); 3335 injectAccessibilityForUrl(url); 3336 } 3337 3338 /** 3339 * This method injects accessibility in the loaded document if accessibility 3340 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3341 * If no URL specific script is found or JavaScript is disabled we fallback to 3342 * the default {@link AccessibilityInjector} implementation. 3343 * </p> 3344 * If the URL has the "axs" paramter set to 1 it has already done the 3345 * script injection so we do nothing. If the parameter is set to 0 3346 * the URL opts out accessibility script injection so we fall back to 3347 * the default {@link AccessibilityInjector}. 3348 * </p> 3349 * Note: If the user has not opted-in the accessibility script injection no scripts 3350 * are injected rather the default {@link AccessibilityInjector} implementation 3351 * is used. 3352 * 3353 * @param url The URL loaded by this {@link WebView}. 3354 */ 3355 private void injectAccessibilityForUrl(String url) { 3356 if (mWebViewCore == null) { 3357 return; 3358 } 3359 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3360 3361 if (!accessibilityManager.isEnabled()) { 3362 // it is possible that accessibility was turned off between reloads 3363 ensureAccessibilityScriptInjectorInstance(false); 3364 return; 3365 } 3366 3367 if (!getSettings().getJavaScriptEnabled()) { 3368 // no JS so we fallback to the basic buil-in support 3369 ensureAccessibilityScriptInjectorInstance(true); 3370 return; 3371 } 3372 3373 // check the URL "axs" parameter to choose appropriate action 3374 int axsParameterValue = getAxsUrlParameterValue(url); 3375 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3376 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3377 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3378 if (onDeviceScriptInjectionEnabled) { 3379 ensureAccessibilityScriptInjectorInstance(false); 3380 // neither script injected nor script injection opted out => we inject 3381 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3382 // TODO: Set this flag after successfull script injection. Maybe upon injection 3383 // the chooser should update the meta tag and we check it to declare success 3384 mAccessibilityScriptInjected = true; 3385 } else { 3386 // injection disabled so we fallback to the basic built-in support 3387 ensureAccessibilityScriptInjectorInstance(true); 3388 } 3389 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3390 // injection opted out so we fallback to the basic buil-in support 3391 ensureAccessibilityScriptInjectorInstance(true); 3392 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3393 ensureAccessibilityScriptInjectorInstance(false); 3394 // the URL provides accessibility but we still need to add our generic script 3395 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3396 } else { 3397 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3398 } 3399 } 3400 3401 /** 3402 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3403 * 3404 * @param present True to ensure an insance, false to ensure no instance. 3405 */ 3406 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3407 if (present) { 3408 if (mAccessibilityInjector == null) { 3409 mAccessibilityInjector = new AccessibilityInjector(this); 3410 } 3411 } else { 3412 mAccessibilityInjector = null; 3413 } 3414 } 3415 3416 /** 3417 * Gets the "axs" URL parameter value. 3418 * 3419 * @param url A url to fetch the paramter from. 3420 * @return The parameter value if such, -1 otherwise. 3421 */ 3422 private int getAxsUrlParameterValue(String url) { 3423 if (mMatchAxsUrlParameterPattern == null) { 3424 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3425 } 3426 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3427 if (matcher.find()) { 3428 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3429 return Integer.parseInt(keyValuePair.split("=")[1]); 3430 } 3431 return -1; 3432 } 3433 3434 /** 3435 * The URL of a page that sent a message to scroll the title bar off screen. 3436 * 3437 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3438 * title bar off the screen. Sometimes, the scroll position is set before 3439 * the page finishes loading. Rather than scrolling while the page is still 3440 * loading, keep track of the URL and new scroll position so we can perform 3441 * the scroll once the page finishes loading. 3442 */ 3443 private String mPageThatNeedsToSlideTitleBarOffScreen; 3444 3445 /** 3446 * The destination Y scroll position to be used when the page finishes 3447 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3448 */ 3449 private int mYDistanceToSlideTitleOffScreen; 3450 3451 // scale from content to view coordinates, and pin 3452 // return true if pin caused the final x/y different than the request cx/cy, 3453 // and a future scroll may reach the request cx/cy after our size has 3454 // changed 3455 // return false if the view scroll to the exact position as it is requested, 3456 // where negative numbers are taken to mean 0 3457 private boolean setContentScrollTo(int cx, int cy) { 3458 if (mDrawHistory) { 3459 // disallow WebView to change the scroll position as History Picture 3460 // is used in the view system. 3461 // One known case where this is called is that WebCore tries to 3462 // restore the scroll position. As history Picture already uses the 3463 // saved scroll position, it is ok to skip this. 3464 return false; 3465 } 3466 int vx; 3467 int vy; 3468 if ((cx | cy) == 0) { 3469 // If the page is being scrolled to (0,0), do not add in the title 3470 // bar's height, and simply scroll to (0,0). (The only other work 3471 // in contentToView_ is to multiply, so this would not change 0.) 3472 vx = 0; 3473 vy = 0; 3474 } else { 3475 vx = contentToViewX(cx); 3476 vy = contentToViewY(cy); 3477 } 3478// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3479// vx + " " + vy + "]"); 3480 // Some mobile sites attempt to scroll the title bar off the page by 3481 // scrolling to (0,1). If we are at the top left corner of the 3482 // page, assume this is an attempt to scroll off the title bar, and 3483 // animate the title bar off screen slowly enough that the user can see 3484 // it. 3485 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3486 && mTitleBar != null) { 3487 // FIXME: 100 should be defined somewhere as our max progress. 3488 if (getProgress() < 100) { 3489 // Wait to scroll the title bar off screen until the page has 3490 // finished loading. Keep track of the URL and the destination 3491 // Y position 3492 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3493 mYDistanceToSlideTitleOffScreen = vy; 3494 } else { 3495 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3496 } 3497 // Since we are animating, we have not yet reached the desired 3498 // scroll position. Do not return true to request another attempt 3499 return false; 3500 } 3501 pinScrollTo(vx, vy, false, 0); 3502 // If the request was to scroll to a negative coordinate, treat it as if 3503 // it was a request to scroll to 0 3504 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3505 return true; 3506 } else { 3507 return false; 3508 } 3509 } 3510 3511 // scale from content to view coordinates, and pin 3512 private void spawnContentScrollTo(int cx, int cy) { 3513 if (mDrawHistory) { 3514 // disallow WebView to change the scroll position as History Picture 3515 // is used in the view system. 3516 return; 3517 } 3518 int vx = contentToViewX(cx); 3519 int vy = contentToViewY(cy); 3520 pinScrollTo(vx, vy, true, 0); 3521 } 3522 3523 /** 3524 * These are from webkit, and are in content coordinate system (unzoomed) 3525 */ 3526 private void contentSizeChanged(boolean updateLayout) { 3527 // suppress 0,0 since we usually see real dimensions soon after 3528 // this avoids drawing the prev content in a funny place. If we find a 3529 // way to consolidate these notifications, this check may become 3530 // obsolete 3531 if ((mContentWidth | mContentHeight) == 0) { 3532 return; 3533 } 3534 3535 if (mHeightCanMeasure) { 3536 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3537 || updateLayout) { 3538 requestLayout(); 3539 } 3540 } else if (mWidthCanMeasure) { 3541 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3542 || updateLayout) { 3543 requestLayout(); 3544 } 3545 } else { 3546 // If we don't request a layout, try to send our view size to the 3547 // native side to ensure that WebCore has the correct dimensions. 3548 sendViewSizeZoom(false); 3549 } 3550 } 3551 3552 /** 3553 * Set the WebViewClient that will receive various notifications and 3554 * requests. This will replace the current handler. 3555 * @param client An implementation of WebViewClient. 3556 */ 3557 public void setWebViewClient(WebViewClient client) { 3558 mCallbackProxy.setWebViewClient(client); 3559 } 3560 3561 /** 3562 * Gets the WebViewClient 3563 * @return the current WebViewClient instance. 3564 * 3565 *@hide pending API council approval. 3566 */ 3567 public WebViewClient getWebViewClient() { 3568 return mCallbackProxy.getWebViewClient(); 3569 } 3570 3571 /** 3572 * Register the interface to be used when content can not be handled by 3573 * the rendering engine, and should be downloaded instead. This will replace 3574 * the current handler. 3575 * @param listener An implementation of DownloadListener. 3576 */ 3577 public void setDownloadListener(DownloadListener listener) { 3578 mCallbackProxy.setDownloadListener(listener); 3579 } 3580 3581 /** 3582 * Set the chrome handler. This is an implementation of WebChromeClient for 3583 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3584 * This will replace the current handler. 3585 * @param client An implementation of WebChromeClient. 3586 */ 3587 public void setWebChromeClient(WebChromeClient client) { 3588 mCallbackProxy.setWebChromeClient(client); 3589 } 3590 3591 /** 3592 * Gets the chrome handler. 3593 * @return the current WebChromeClient instance. 3594 * 3595 * @hide API council approval. 3596 */ 3597 public WebChromeClient getWebChromeClient() { 3598 return mCallbackProxy.getWebChromeClient(); 3599 } 3600 3601 /** 3602 * Set the back/forward list client. This is an implementation of 3603 * WebBackForwardListClient for handling new items and changes in the 3604 * history index. 3605 * @param client An implementation of WebBackForwardListClient. 3606 * {@hide} 3607 */ 3608 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3609 mCallbackProxy.setWebBackForwardListClient(client); 3610 } 3611 3612 /** 3613 * Gets the WebBackForwardListClient. 3614 * {@hide} 3615 */ 3616 public WebBackForwardListClient getWebBackForwardListClient() { 3617 return mCallbackProxy.getWebBackForwardListClient(); 3618 } 3619 3620 /** 3621 * Set the Picture listener. This is an interface used to receive 3622 * notifications of a new Picture. 3623 * @param listener An implementation of WebView.PictureListener. 3624 * @deprecated This method is now obsolete. 3625 */ 3626 @Deprecated 3627 public void setPictureListener(PictureListener listener) { 3628 mPictureListener = listener; 3629 } 3630 3631 /** 3632 * {@hide} 3633 */ 3634 /* FIXME: Debug only! Remove for SDK! */ 3635 public void externalRepresentation(Message callback) { 3636 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3637 } 3638 3639 /** 3640 * {@hide} 3641 */ 3642 /* FIXME: Debug only! Remove for SDK! */ 3643 public void documentAsText(Message callback) { 3644 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3645 } 3646 3647 /** 3648 * Use this function to bind an object to JavaScript so that the 3649 * methods can be accessed from JavaScript. 3650 * <p><strong>IMPORTANT:</strong> 3651 * <ul> 3652 * <li> Using addJavascriptInterface() allows JavaScript to control your 3653 * application. This can be a very useful feature or a dangerous security 3654 * issue. When the HTML in the WebView is untrustworthy (for example, part 3655 * or all of the HTML is provided by some person or process), then an 3656 * attacker could inject HTML that will execute your code and possibly any 3657 * code of the attacker's choosing.<br> 3658 * Do not use addJavascriptInterface() unless all of the HTML in this 3659 * WebView was written by you.</li> 3660 * <li> The Java object that is bound runs in another thread and not in 3661 * the thread that it was constructed in.</li> 3662 * </ul></p> 3663 * @param obj The class instance to bind to JavaScript, null instances are 3664 * ignored. 3665 * @param interfaceName The name to used to expose the instance in 3666 * JavaScript. 3667 */ 3668 public void addJavascriptInterface(Object obj, String interfaceName) { 3669 if (obj == null) { 3670 return; 3671 } 3672 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3673 arg.mObject = obj; 3674 arg.mInterfaceName = interfaceName; 3675 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3676 } 3677 3678 /** 3679 * Removes a previously added JavaScript interface with the given name. 3680 * @param interfaceName The name of the interface to remove. 3681 */ 3682 public void removeJavascriptInterface(String interfaceName) { 3683 if (mWebViewCore != null) { 3684 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3685 arg.mInterfaceName = interfaceName; 3686 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3687 } 3688 } 3689 3690 /** 3691 * Return the WebSettings object used to control the settings for this 3692 * WebView. 3693 * @return A WebSettings object that can be used to control this WebView's 3694 * settings. 3695 */ 3696 public WebSettings getSettings() { 3697 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3698 } 3699 3700 /** 3701 * Return the list of currently loaded plugins. 3702 * @return The list of currently loaded plugins. 3703 * 3704 * @hide 3705 * @deprecated This was used for Gears, which has been deprecated. 3706 */ 3707 @Deprecated 3708 public static synchronized PluginList getPluginList() { 3709 return new PluginList(); 3710 } 3711 3712 /** 3713 * @hide 3714 * @deprecated This was used for Gears, which has been deprecated. 3715 */ 3716 @Deprecated 3717 public void refreshPlugins(boolean reloadOpenPages) { } 3718 3719 //------------------------------------------------------------------------- 3720 // Override View methods 3721 //------------------------------------------------------------------------- 3722 3723 @Override 3724 protected void finalize() throws Throwable { 3725 try { 3726 destroy(); 3727 } finally { 3728 super.finalize(); 3729 } 3730 } 3731 3732 @Override 3733 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3734 if (child == mTitleBar) { 3735 // When drawing the title bar, move it horizontally to always show 3736 // at the top of the WebView. 3737 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3738 int newTop = 0; 3739 if (mTitleGravity == Gravity.NO_GRAVITY) { 3740 newTop = Math.min(0, mScrollY); 3741 } else if (mTitleGravity == Gravity.TOP) { 3742 newTop = mScrollY; 3743 } 3744 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3745 mTitleBar.setTop(newTop); 3746 } 3747 return super.drawChild(canvas, child, drawingTime); 3748 } 3749 3750 private void drawContent(Canvas canvas) { 3751 // Update the buttons in the picture, so when we draw the picture 3752 // to the screen, they are in the correct state. 3753 // Tell the native side if user is a) touching the screen, 3754 // b) pressing the trackball down, or c) pressing the enter key 3755 // If the cursor is on a button, we need to draw it in the pressed 3756 // state. 3757 // If mNativeClass is 0, we should not reach here, so we do not 3758 // need to check it again. 3759 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3760 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3761 || mTrackballDown || mGotCenterDown, false); 3762 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3763 } 3764 3765 /** 3766 * Draw the background when beyond bounds 3767 * @param canvas Canvas to draw into 3768 */ 3769 private void drawOverScrollBackground(Canvas canvas) { 3770 if (mOverScrollBackground == null) { 3771 mOverScrollBackground = new Paint(); 3772 Bitmap bm = BitmapFactory.decodeResource( 3773 mContext.getResources(), 3774 com.android.internal.R.drawable.status_bar_background); 3775 mOverScrollBackground.setShader(new BitmapShader(bm, 3776 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3777 mOverScrollBorder = new Paint(); 3778 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3779 mOverScrollBorder.setStrokeWidth(0); 3780 mOverScrollBorder.setColor(0xffbbbbbb); 3781 } 3782 3783 int top = 0; 3784 int right = computeRealHorizontalScrollRange(); 3785 int bottom = top + computeRealVerticalScrollRange(); 3786 // first draw the background and anchor to the top of the view 3787 canvas.save(); 3788 canvas.translate(mScrollX, mScrollY); 3789 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3790 - mScrollY, Region.Op.DIFFERENCE); 3791 canvas.drawPaint(mOverScrollBackground); 3792 canvas.restore(); 3793 // then draw the border 3794 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3795 // next clip the region for the content 3796 canvas.clipRect(0, top, right, bottom); 3797 } 3798 3799 @Override 3800 protected void onDraw(Canvas canvas) { 3801 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3802 if (mNativeClass == 0) { 3803 return; 3804 } 3805 3806 // if both mContentWidth and mContentHeight are 0, it means there is no 3807 // valid Picture passed to WebView yet. This can happen when WebView 3808 // just starts. Draw the background and return. 3809 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3810 canvas.drawColor(mBackgroundColor); 3811 return; 3812 } 3813 3814 if (canvas.isHardwareAccelerated()) { 3815 mZoomManager.setHardwareAccelerated(); 3816 } 3817 3818 int saveCount = canvas.save(); 3819 if (mInOverScrollMode && !getSettings() 3820 .getUseWebViewBackgroundForOverscrollBackground()) { 3821 drawOverScrollBackground(canvas); 3822 } 3823 if (mTitleBar != null) { 3824 canvas.translate(0, getTitleHeight()); 3825 } 3826 drawContent(canvas); 3827 canvas.restoreToCount(saveCount); 3828 3829 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3830 invalidate(); 3831 } 3832 if (inEditingMode()) { 3833 mWebTextView.onDrawSubstitute(); 3834 } 3835 mWebViewCore.signalRepaintDone(); 3836 3837 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3838 invalidate(); 3839 } 3840 3841 // paint the highlight in the end 3842 if (!mTouchHighlightRegion.isEmpty()) { 3843 if (mTouchHightlightPaint == null) { 3844 mTouchHightlightPaint = new Paint(); 3845 mTouchHightlightPaint.setColor(mHightlightColor); 3846 mTouchHightlightPaint.setAntiAlias(true); 3847 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3848 TOUCH_HIGHLIGHT_ARC)); 3849 } 3850 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3851 mTouchHightlightPaint); 3852 } 3853 if (DEBUG_TOUCH_HIGHLIGHT) { 3854 if (getSettings().getNavDump()) { 3855 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3856 if (mTouchCrossHairColor == null) { 3857 mTouchCrossHairColor = new Paint(); 3858 mTouchCrossHairColor.setColor(Color.RED); 3859 } 3860 canvas.drawLine(mTouchHighlightX - mNavSlop, 3861 mTouchHighlightY - mNavSlop, mTouchHighlightX 3862 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3863 + 1, mTouchCrossHairColor); 3864 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3865 mTouchHighlightY - mNavSlop, mTouchHighlightX 3866 - mNavSlop, 3867 mTouchHighlightY + mNavSlop + 1, 3868 mTouchCrossHairColor); 3869 } 3870 } 3871 } 3872 } 3873 3874 private void removeTouchHighlight(boolean removePendingMessage) { 3875 if (removePendingMessage) { 3876 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3877 } 3878 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3879 } 3880 3881 @Override 3882 public void setLayoutParams(ViewGroup.LayoutParams params) { 3883 if (params.height == LayoutParams.WRAP_CONTENT) { 3884 mWrapContent = true; 3885 } 3886 super.setLayoutParams(params); 3887 } 3888 3889 @Override 3890 public boolean performLongClick() { 3891 // performLongClick() is the result of a delayed message. If we switch 3892 // to windows overview, the WebView will be temporarily removed from the 3893 // view system. In that case, do nothing. 3894 if (getParent() == null) return false; 3895 3896 // A multi-finger gesture can look like a long press; make sure we don't take 3897 // long press actions if we're scaling. 3898 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3899 if (detector != null && detector.isInProgress()) { 3900 return false; 3901 } 3902 3903 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3904 // Send the click so that the textfield is in focus 3905 centerKeyPressOnTextField(); 3906 rebuildWebTextView(); 3907 } else { 3908 clearTextEntry(); 3909 } 3910 if (inEditingMode()) { 3911 // Since we just called rebuildWebTextView, the layout is not set 3912 // properly. Update it so it can correctly find the word to select. 3913 mWebTextView.ensureLayout(); 3914 // Provide a touch down event to WebTextView, which will allow it 3915 // to store the location to use in performLongClick. 3916 AbsoluteLayout.LayoutParams params 3917 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3918 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3919 mLastTouchTime, MotionEvent.ACTION_DOWN, 3920 mLastTouchX - params.x + mScrollX, 3921 mLastTouchY - params.y + mScrollY, 0); 3922 mWebTextView.dispatchTouchEvent(fake); 3923 return mWebTextView.performLongClick(); 3924 } 3925 if (mSelectingText) return false; // long click does nothing on selection 3926 /* if long click brings up a context menu, the super function 3927 * returns true and we're done. Otherwise, nothing happened when 3928 * the user clicked. */ 3929 if (super.performLongClick()) { 3930 return true; 3931 } 3932 /* In the case where the application hasn't already handled the long 3933 * click action, look for a word under the click. If one is found, 3934 * animate the text selection into view. 3935 * FIXME: no animation code yet */ 3936 return selectText(); 3937 } 3938 3939 /** 3940 * Select the word at the last click point. 3941 * 3942 * @hide pending API council approval 3943 */ 3944 public boolean selectText() { 3945 int x = viewToContentX(mLastTouchX + mScrollX); 3946 int y = viewToContentY(mLastTouchY + mScrollY); 3947 return selectText(x, y); 3948 } 3949 3950 /** 3951 * Select the word at the indicated content coordinates. 3952 */ 3953 boolean selectText(int x, int y) { 3954 if (!setUpSelect(true, x, y)) { 3955 return false; 3956 } 3957 nativeSetExtendSelection(); 3958 mDrawSelectionPointer = false; 3959 mSelectionStarted = true; 3960 mTouchMode = TOUCH_DRAG_MODE; 3961 return true; 3962 } 3963 3964 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3965 3966 @Override 3967 protected void onConfigurationChanged(Configuration newConfig) { 3968 if (mSelectingText && mOrientation != newConfig.orientation) { 3969 selectionDone(); 3970 } 3971 mOrientation = newConfig.orientation; 3972 } 3973 3974 /** 3975 * Keep track of the Callback so we can end its ActionMode or remove its 3976 * titlebar. 3977 */ 3978 private SelectActionModeCallback mSelectCallback; 3979 3980 // These values are possible options for didUpdateWebTextViewDimensions. 3981 private static final int FULLY_ON_SCREEN = 0; 3982 private static final int INTERSECTS_SCREEN = 1; 3983 private static final int ANYWHERE = 2; 3984 3985 /** 3986 * Check to see if the focused textfield/textarea is still on screen. If it 3987 * is, update the the dimensions and location of WebTextView. Otherwise, 3988 * remove the WebTextView. Should be called when the zoom level changes. 3989 * @param intersection How to determine whether the textfield/textarea is 3990 * still on screen. 3991 * @return boolean True if the textfield/textarea is still on screen and the 3992 * dimensions/location of WebTextView have been updated. 3993 */ 3994 private boolean didUpdateWebTextViewDimensions(int intersection) { 3995 Rect contentBounds = nativeFocusCandidateNodeBounds(); 3996 Rect vBox = contentToViewRect(contentBounds); 3997 Rect visibleRect = new Rect(); 3998 calcOurVisibleRect(visibleRect); 3999 // If the textfield is on screen, place the WebTextView in 4000 // its new place, accounting for our new scroll/zoom values, 4001 // and adjust its textsize. 4002 boolean onScreen; 4003 switch (intersection) { 4004 case FULLY_ON_SCREEN: 4005 onScreen = visibleRect.contains(vBox); 4006 break; 4007 case INTERSECTS_SCREEN: 4008 onScreen = Rect.intersects(visibleRect, vBox); 4009 break; 4010 case ANYWHERE: 4011 onScreen = true; 4012 break; 4013 default: 4014 throw new AssertionError( 4015 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4016 } 4017 if (onScreen) { 4018 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4019 vBox.height()); 4020 mWebTextView.updateTextSize(); 4021 updateWebTextViewPadding(); 4022 return true; 4023 } else { 4024 // The textfield is now off screen. The user probably 4025 // was not zooming to see the textfield better. Remove 4026 // the WebTextView. If the user types a key, and the 4027 // textfield is still in focus, we will reconstruct 4028 // the WebTextView and scroll it back on screen. 4029 mWebTextView.remove(); 4030 return false; 4031 } 4032 } 4033 4034 void setBaseLayer(int layer, Rect invalRect, boolean showVisualIndciator) { 4035 if (mNativeClass == 0) 4036 return; 4037 if (invalRect == null) { 4038 Rect rect = new Rect(0, 0, mContentWidth, mContentHeight); 4039 nativeSetBaseLayer(layer, rect, showVisualIndciator); 4040 } else { 4041 nativeSetBaseLayer(layer, invalRect, showVisualIndciator); 4042 } 4043 } 4044 4045 private void onZoomAnimationStart() { 4046 // If it is in password mode, turn it off so it does not draw misplaced. 4047 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4048 mWebTextView.setInPassword(false); 4049 } 4050 } 4051 4052 private void onZoomAnimationEnd() { 4053 // adjust the edit text view if needed 4054 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4055 && nativeFocusCandidateIsPassword()) { 4056 // If it is a password field, start drawing the WebTextView once 4057 // again. 4058 mWebTextView.setInPassword(true); 4059 } 4060 } 4061 4062 void onFixedLengthZoomAnimationStart() { 4063 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4064 onZoomAnimationStart(); 4065 } 4066 4067 void onFixedLengthZoomAnimationEnd() { 4068 if (!mSelectingText) { 4069 WebViewCore.resumeUpdatePicture(mWebViewCore); 4070 } 4071 onZoomAnimationEnd(); 4072 } 4073 4074 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4075 Paint.DITHER_FLAG | 4076 Paint.SUBPIXEL_TEXT_FLAG; 4077 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4078 Paint.DITHER_FLAG; 4079 4080 private final DrawFilter mZoomFilter = 4081 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4082 // If we need to trade better quality for speed, set mScrollFilter to null 4083 private final DrawFilter mScrollFilter = 4084 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4085 4086 private void drawCoreAndCursorRing(Canvas canvas, int color, 4087 boolean drawCursorRing) { 4088 if (mDrawHistory) { 4089 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4090 canvas.drawPicture(mHistoryPicture); 4091 return; 4092 } 4093 if (mNativeClass == 0) return; 4094 4095 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4096 boolean animateScroll = ((!mScroller.isFinished() 4097 || mVelocityTracker != null) 4098 && (mTouchMode != TOUCH_DRAG_MODE || 4099 mHeldMotionless != MOTIONLESS_TRUE)) 4100 || mDeferTouchMode == TOUCH_DRAG_MODE; 4101 if (mTouchMode == TOUCH_DRAG_MODE) { 4102 if (mHeldMotionless == MOTIONLESS_PENDING) { 4103 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4104 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4105 mHeldMotionless = MOTIONLESS_FALSE; 4106 } 4107 if (mHeldMotionless == MOTIONLESS_FALSE) { 4108 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4109 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4110 mHeldMotionless = MOTIONLESS_PENDING; 4111 } 4112 } 4113 if (animateZoom) { 4114 mZoomManager.animateZoom(canvas); 4115 } else { 4116 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4117 } 4118 4119 boolean UIAnimationsRunning = false; 4120 // Currently for each draw we compute the animation values; 4121 // We may in the future decide to do that independently. 4122 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4123 UIAnimationsRunning = true; 4124 // If we have unfinished (or unstarted) animations, 4125 // we ask for a repaint. 4126 invalidate(); 4127 } 4128 4129 // decide which adornments to draw 4130 int extras = DRAW_EXTRAS_NONE; 4131 if (mFindIsUp) { 4132 extras = DRAW_EXTRAS_FIND; 4133 } else if (mSelectingText) { 4134 extras = DRAW_EXTRAS_SELECTION; 4135 nativeSetSelectionPointer(mDrawSelectionPointer, 4136 mZoomManager.getInvScale(), 4137 mSelectX, mSelectY - getTitleHeight()); 4138 } else if (drawCursorRing) { 4139 extras = DRAW_EXTRAS_CURSOR_RING; 4140 } 4141 if (DebugFlags.WEB_VIEW) { 4142 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4143 + " mSelectingText=" + mSelectingText 4144 + " nativePageShouldHandleShiftAndArrows()=" 4145 + nativePageShouldHandleShiftAndArrows() 4146 + " animateZoom=" + animateZoom 4147 + " extras=" + extras); 4148 } 4149 4150 if (canvas.isHardwareAccelerated()) { 4151 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4152 getScale(), extras); 4153 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4154 } else { 4155 DrawFilter df = null; 4156 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4157 df = mZoomFilter; 4158 } else if (animateScroll) { 4159 df = mScrollFilter; 4160 } 4161 canvas.setDrawFilter(df); 4162 // XXX: Revisit splitting content. Right now it causes a 4163 // synchronization problem with layers. 4164 int content = nativeDraw(canvas, color, extras, false); 4165 canvas.setDrawFilter(null); 4166 if (content != 0) { 4167 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4168 } 4169 } 4170 4171 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4172 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4173 mTouchMode = TOUCH_SHORTPRESS_MODE; 4174 } 4175 } 4176 if (mFocusSizeChanged) { 4177 mFocusSizeChanged = false; 4178 // If we are zooming, this will get handled above, when the zoom 4179 // finishes. We also do not need to do this unless the WebTextView 4180 // is showing. 4181 if (!animateZoom && inEditingMode()) { 4182 didUpdateWebTextViewDimensions(ANYWHERE); 4183 } 4184 } 4185 } 4186 4187 // draw history 4188 private boolean mDrawHistory = false; 4189 private Picture mHistoryPicture = null; 4190 private int mHistoryWidth = 0; 4191 private int mHistoryHeight = 0; 4192 4193 // Only check the flag, can be called from WebCore thread 4194 boolean drawHistory() { 4195 return mDrawHistory; 4196 } 4197 4198 int getHistoryPictureWidth() { 4199 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4200 } 4201 4202 // Should only be called in UI thread 4203 void switchOutDrawHistory() { 4204 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4205 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4206 mDrawHistory = false; 4207 mHistoryPicture = null; 4208 invalidate(); 4209 int oldScrollX = mScrollX; 4210 int oldScrollY = mScrollY; 4211 mScrollX = pinLocX(mScrollX); 4212 mScrollY = pinLocY(mScrollY); 4213 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4214 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4215 } else { 4216 sendOurVisibleRect(); 4217 } 4218 } 4219 } 4220 4221 WebViewCore.CursorData cursorData() { 4222 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4223 result.mMoveGeneration = nativeMoveGeneration(); 4224 result.mFrame = nativeCursorFramePointer(); 4225 Point position = nativeCursorPosition(); 4226 result.mX = position.x; 4227 result.mY = position.y; 4228 return result; 4229 } 4230 4231 /** 4232 * Delete text from start to end in the focused textfield. If there is no 4233 * focus, or if start == end, silently fail. If start and end are out of 4234 * order, swap them. 4235 * @param start Beginning of selection to delete. 4236 * @param end End of selection to delete. 4237 */ 4238 /* package */ void deleteSelection(int start, int end) { 4239 mTextGeneration++; 4240 WebViewCore.TextSelectionData data 4241 = new WebViewCore.TextSelectionData(start, end); 4242 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4243 data); 4244 } 4245 4246 /** 4247 * Set the selection to (start, end) in the focused textfield. If start and 4248 * end are out of order, swap them. 4249 * @param start Beginning of selection. 4250 * @param end End of selection. 4251 */ 4252 /* package */ void setSelection(int start, int end) { 4253 if (mWebViewCore != null) { 4254 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4255 } 4256 } 4257 4258 @Override 4259 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4260 InputConnection connection = super.onCreateInputConnection(outAttrs); 4261 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4262 return connection; 4263 } 4264 4265 /** 4266 * Called in response to a message from webkit telling us that the soft 4267 * keyboard should be launched. 4268 */ 4269 private void displaySoftKeyboard(boolean isTextView) { 4270 InputMethodManager imm = (InputMethodManager) 4271 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4272 4273 // bring it back to the default level scale so that user can enter text 4274 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4275 if (zoom) { 4276 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4277 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4278 } 4279 if (isTextView) { 4280 rebuildWebTextView(); 4281 if (inEditingMode()) { 4282 imm.showSoftInput(mWebTextView, 0); 4283 if (zoom) { 4284 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4285 } 4286 return; 4287 } 4288 } 4289 // Used by plugins and contentEditable. 4290 // Also used if the navigation cache is out of date, and 4291 // does not recognize that a textfield is in focus. In that 4292 // case, use WebView as the targeted view. 4293 // see http://b/issue?id=2457459 4294 imm.showSoftInput(this, 0); 4295 } 4296 4297 // Called by WebKit to instruct the UI to hide the keyboard 4298 private void hideSoftKeyboard() { 4299 InputMethodManager imm = InputMethodManager.peekInstance(); 4300 if (imm != null && (imm.isActive(this) 4301 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4302 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4303 } 4304 } 4305 4306 /* 4307 * This method checks the current focus and cursor and potentially rebuilds 4308 * mWebTextView to have the appropriate properties, such as password, 4309 * multiline, and what text it contains. It also removes it if necessary. 4310 */ 4311 /* package */ void rebuildWebTextView() { 4312 // If the WebView does not have focus, do nothing until it gains focus. 4313 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4314 return; 4315 } 4316 boolean alreadyThere = inEditingMode(); 4317 // inEditingMode can only return true if mWebTextView is non-null, 4318 // so we can safely call remove() if (alreadyThere) 4319 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4320 if (alreadyThere) { 4321 mWebTextView.remove(); 4322 } 4323 return; 4324 } 4325 // At this point, we know we have found an input field, so go ahead 4326 // and create the WebTextView if necessary. 4327 if (mWebTextView == null) { 4328 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4329 // Initialize our generation number. 4330 mTextGeneration = 0; 4331 } 4332 mWebTextView.updateTextSize(); 4333 Rect visibleRect = new Rect(); 4334 calcOurContentVisibleRect(visibleRect); 4335 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4336 // should be in content coordinates. 4337 Rect bounds = nativeFocusCandidateNodeBounds(); 4338 Rect vBox = contentToViewRect(bounds); 4339 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4340 if (!Rect.intersects(bounds, visibleRect)) { 4341 revealSelection(); 4342 } 4343 String text = nativeFocusCandidateText(); 4344 int nodePointer = nativeFocusCandidatePointer(); 4345 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4346 // It is possible that we have the same textfield, but it has moved, 4347 // i.e. In the case of opening/closing the screen. 4348 // In that case, we need to set the dimensions, but not the other 4349 // aspects. 4350 // If the text has been changed by webkit, update it. However, if 4351 // there has been more UI text input, ignore it. We will receive 4352 // another update when that text is recognized. 4353 if (text != null && !text.equals(mWebTextView.getText().toString()) 4354 && nativeTextGeneration() == mTextGeneration) { 4355 mWebTextView.setTextAndKeepSelection(text); 4356 } 4357 } else { 4358 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4359 Gravity.RIGHT : Gravity.NO_GRAVITY); 4360 // This needs to be called before setType, which may call 4361 // requestFormData, and it needs to have the correct nodePointer. 4362 mWebTextView.setNodePointer(nodePointer); 4363 mWebTextView.setType(nativeFocusCandidateType()); 4364 updateWebTextViewPadding(); 4365 if (null == text) { 4366 if (DebugFlags.WEB_VIEW) { 4367 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4368 } 4369 text = ""; 4370 } 4371 mWebTextView.setTextAndKeepSelection(text); 4372 InputMethodManager imm = InputMethodManager.peekInstance(); 4373 if (imm != null && imm.isActive(mWebTextView)) { 4374 imm.restartInput(mWebTextView); 4375 } 4376 } 4377 if (isFocused()) { 4378 mWebTextView.requestFocus(); 4379 } 4380 } 4381 4382 /** 4383 * Update the padding of mWebTextView based on the native textfield/textarea 4384 */ 4385 void updateWebTextViewPadding() { 4386 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4387 if (paddingRect != null) { 4388 // Use contentToViewDimension since these are the dimensions of 4389 // the padding. 4390 mWebTextView.setPadding( 4391 contentToViewDimension(paddingRect.left), 4392 contentToViewDimension(paddingRect.top), 4393 contentToViewDimension(paddingRect.right), 4394 contentToViewDimension(paddingRect.bottom)); 4395 } 4396 } 4397 4398 /** 4399 * Tell webkit to put the cursor on screen. 4400 */ 4401 /* package */ void revealSelection() { 4402 if (mWebViewCore != null) { 4403 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4404 } 4405 } 4406 4407 /** 4408 * Called by WebTextView to find saved form data associated with the 4409 * textfield 4410 * @param name Name of the textfield. 4411 * @param nodePointer Pointer to the node of the textfield, so it can be 4412 * compared to the currently focused textfield when the data is 4413 * retrieved. 4414 * @param autoFillable true if WebKit has determined this field is part of 4415 * a form that can be auto filled. 4416 * @param autoComplete true if the attribute "autocomplete" is set to true 4417 * on the textfield. 4418 */ 4419 /* package */ void requestFormData(String name, int nodePointer, 4420 boolean autoFillable, boolean autoComplete) { 4421 if (mWebViewCore.getSettings().getSaveFormData()) { 4422 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4423 update.arg1 = nodePointer; 4424 RequestFormData updater = new RequestFormData(name, getUrl(), 4425 update, autoFillable, autoComplete); 4426 Thread t = new Thread(updater); 4427 t.start(); 4428 } 4429 } 4430 4431 /** 4432 * Pass a message to find out the <label> associated with the <input> 4433 * identified by nodePointer 4434 * @param framePointer Pointer to the frame containing the <input> node 4435 * @param nodePointer Pointer to the node for which a <label> is desired. 4436 */ 4437 /* package */ void requestLabel(int framePointer, int nodePointer) { 4438 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4439 nodePointer); 4440 } 4441 4442 /* 4443 * This class requests an Adapter for the WebTextView which shows past 4444 * entries stored in the database. It is a Runnable so that it can be done 4445 * in its own thread, without slowing down the UI. 4446 */ 4447 private class RequestFormData implements Runnable { 4448 private String mName; 4449 private String mUrl; 4450 private Message mUpdateMessage; 4451 private boolean mAutoFillable; 4452 private boolean mAutoComplete; 4453 4454 public RequestFormData(String name, String url, Message msg, 4455 boolean autoFillable, boolean autoComplete) { 4456 mName = name; 4457 mUrl = url; 4458 mUpdateMessage = msg; 4459 mAutoFillable = autoFillable; 4460 mAutoComplete = autoComplete; 4461 } 4462 4463 public void run() { 4464 ArrayList<String> pastEntries = new ArrayList<String>(); 4465 4466 if (mAutoFillable) { 4467 // Note that code inside the adapter click handler in WebTextView depends 4468 // on the AutoFill item being at the top of the drop down list. If you change 4469 // the order, make sure to do it there too! 4470 WebSettings settings = getSettings(); 4471 if (settings != null && settings.getAutoFillProfile() != null) { 4472 pastEntries.add(getResources().getText( 4473 com.android.internal.R.string.autofill_this_form).toString() + 4474 " " + 4475 mAutoFillData.getPreviewString()); 4476 mWebTextView.setAutoFillProfileIsSet(true); 4477 } else { 4478 // There is no autofill profile set up yet, so add an option that 4479 // will invite the user to set their profile up. 4480 pastEntries.add(getResources().getText( 4481 com.android.internal.R.string.setup_autofill).toString()); 4482 mWebTextView.setAutoFillProfileIsSet(false); 4483 } 4484 } 4485 4486 if (mAutoComplete) { 4487 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4488 } 4489 4490 if (pastEntries.size() > 0) { 4491 AutoCompleteAdapter adapter = new 4492 AutoCompleteAdapter(mContext, pastEntries); 4493 mUpdateMessage.obj = adapter; 4494 mUpdateMessage.sendToTarget(); 4495 } 4496 } 4497 } 4498 4499 /** 4500 * Dump the display tree to "/sdcard/displayTree.txt" 4501 * 4502 * @hide debug only 4503 */ 4504 public void dumpDisplayTree() { 4505 nativeDumpDisplayTree(getUrl()); 4506 } 4507 4508 /** 4509 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4510 * "/sdcard/domTree.txt" 4511 * 4512 * @hide debug only 4513 */ 4514 public void dumpDomTree(boolean toFile) { 4515 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4516 } 4517 4518 /** 4519 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4520 * to "/sdcard/renderTree.txt" 4521 * 4522 * @hide debug only 4523 */ 4524 public void dumpRenderTree(boolean toFile) { 4525 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4526 } 4527 4528 /** 4529 * Called by DRT on UI thread, need to proxy to WebCore thread. 4530 * 4531 * @hide debug only 4532 */ 4533 public void useMockDeviceOrientation() { 4534 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4535 } 4536 4537 /** 4538 * Called by DRT on WebCore thread. 4539 * 4540 * @hide debug only 4541 */ 4542 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4543 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4544 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4545 canProvideGamma, gamma); 4546 } 4547 4548 /** 4549 * Dump the V8 counters to standard output. 4550 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4551 * true. Otherwise, this will do nothing. 4552 * 4553 * @hide debug only 4554 */ 4555 public void dumpV8Counters() { 4556 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4557 } 4558 4559 // This is used to determine long press with the center key. Does not 4560 // affect long press with the trackball/touch. 4561 private boolean mGotCenterDown = false; 4562 4563 @Override 4564 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4565 // send complex characters to webkit for use by JS and plugins 4566 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4567 // pass the key to DOM 4568 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4569 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4570 // return true as DOM handles the key 4571 return true; 4572 } 4573 return false; 4574 } 4575 4576 private boolean isEnterActionKey(int keyCode) { 4577 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4578 || keyCode == KeyEvent.KEYCODE_ENTER 4579 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4580 } 4581 4582 @Override 4583 public boolean onKeyDown(int keyCode, KeyEvent event) { 4584 if (DebugFlags.WEB_VIEW) { 4585 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4586 + "keyCode=" + keyCode 4587 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4588 } 4589 4590 // don't implement accelerator keys here; defer to host application 4591 if (event.isCtrlPressed()) { 4592 return false; 4593 } 4594 4595 if (mNativeClass == 0) { 4596 return false; 4597 } 4598 4599 // do this hack up front, so it always works, regardless of touch-mode 4600 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4601 mAutoRedraw = !mAutoRedraw; 4602 if (mAutoRedraw) { 4603 invalidate(); 4604 } 4605 return true; 4606 } 4607 4608 // Bubble up the key event if 4609 // 1. it is a system key; or 4610 // 2. the host application wants to handle it; 4611 if (event.isSystem() 4612 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4613 return false; 4614 } 4615 4616 // accessibility support 4617 if (accessibilityScriptInjected()) { 4618 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4619 // if an accessibility script is injected we delegate to it the key handling. 4620 // this script is a screen reader which is a fully fledged solution for blind 4621 // users to navigate in and interact with web pages. 4622 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4623 return true; 4624 } else { 4625 // Clean up if accessibility was disabled after loading the current URL. 4626 mAccessibilityScriptInjected = false; 4627 } 4628 } else if (mAccessibilityInjector != null) { 4629 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4630 if (mAccessibilityInjector.onKeyEvent(event)) { 4631 // if an accessibility injector is present (no JavaScript enabled or the site 4632 // opts out injecting our JavaScript screen reader) we let it decide whether 4633 // to act on and consume the event. 4634 return true; 4635 } 4636 } else { 4637 // Clean up if accessibility was disabled after loading the current URL. 4638 mAccessibilityInjector = null; 4639 } 4640 } 4641 4642 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4643 if (event.hasNoModifiers()) { 4644 pageUp(false); 4645 return true; 4646 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4647 pageUp(true); 4648 return true; 4649 } 4650 } 4651 4652 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4653 if (event.hasNoModifiers()) { 4654 pageDown(false); 4655 return true; 4656 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4657 pageDown(true); 4658 return true; 4659 } 4660 } 4661 4662 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4663 pageUp(true); 4664 return true; 4665 } 4666 4667 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4668 pageDown(true); 4669 return true; 4670 } 4671 4672 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4673 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4674 switchOutDrawHistory(); 4675 if (nativePageShouldHandleShiftAndArrows()) { 4676 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4677 return true; 4678 } 4679 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4680 switch (keyCode) { 4681 case KeyEvent.KEYCODE_DPAD_UP: 4682 pageUp(true); 4683 return true; 4684 case KeyEvent.KEYCODE_DPAD_DOWN: 4685 pageDown(true); 4686 return true; 4687 case KeyEvent.KEYCODE_DPAD_LEFT: 4688 nativeClearCursor(); // start next trackball movement from page edge 4689 return pinScrollTo(0, mScrollY, true, 0); 4690 case KeyEvent.KEYCODE_DPAD_RIGHT: 4691 nativeClearCursor(); // start next trackball movement from page edge 4692 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4693 } 4694 } 4695 if (mSelectingText) { 4696 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4697 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4698 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4699 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4700 int multiplier = event.getRepeatCount() + 1; 4701 moveSelection(xRate * multiplier, yRate * multiplier); 4702 return true; 4703 } 4704 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4705 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4706 return true; 4707 } 4708 // Bubble up the key event as WebView doesn't handle it 4709 return false; 4710 } 4711 4712 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4713 switchOutDrawHistory(); 4714 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4715 || nativeCursorWantsKeyEvents(); 4716 if (event.getRepeatCount() == 0) { 4717 if (mSelectingText) { 4718 return true; // discard press if copy in progress 4719 } 4720 mGotCenterDown = true; 4721 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4722 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4723 // Already checked mNativeClass, so we do not need to check it 4724 // again. 4725 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4726 if (!wantsKeyEvents) return true; 4727 } 4728 // Bubble up the key event as WebView doesn't handle it 4729 if (!wantsKeyEvents) return false; 4730 } 4731 4732 if (getSettings().getNavDump()) { 4733 switch (keyCode) { 4734 case KeyEvent.KEYCODE_4: 4735 dumpDisplayTree(); 4736 break; 4737 case KeyEvent.KEYCODE_5: 4738 case KeyEvent.KEYCODE_6: 4739 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4740 break; 4741 case KeyEvent.KEYCODE_7: 4742 case KeyEvent.KEYCODE_8: 4743 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4744 break; 4745 case KeyEvent.KEYCODE_9: 4746 nativeInstrumentReport(); 4747 return true; 4748 } 4749 } 4750 4751 if (nativeCursorIsTextInput()) { 4752 // This message will put the node in focus, for the DOM's notion 4753 // of focus. 4754 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4755 nativeCursorNodePointer()); 4756 // This will bring up the WebTextView and put it in focus, for 4757 // our view system's notion of focus 4758 rebuildWebTextView(); 4759 // Now we need to pass the event to it 4760 if (inEditingMode()) { 4761 mWebTextView.setDefaultSelection(); 4762 return mWebTextView.dispatchKeyEvent(event); 4763 } 4764 } else if (nativeHasFocusNode()) { 4765 // In this case, the cursor is not on a text input, but the focus 4766 // might be. Check it, and if so, hand over to the WebTextView. 4767 rebuildWebTextView(); 4768 if (inEditingMode()) { 4769 mWebTextView.setDefaultSelection(); 4770 return mWebTextView.dispatchKeyEvent(event); 4771 } 4772 } 4773 4774 // TODO: should we pass all the keys to DOM or check the meta tag 4775 if (nativeCursorWantsKeyEvents() || true) { 4776 // pass the key to DOM 4777 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4778 // return true as DOM handles the key 4779 return true; 4780 } 4781 4782 // Bubble up the key event as WebView doesn't handle it 4783 return false; 4784 } 4785 4786 @Override 4787 public boolean onKeyUp(int keyCode, KeyEvent event) { 4788 if (DebugFlags.WEB_VIEW) { 4789 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4790 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4791 } 4792 4793 if (mNativeClass == 0) { 4794 return false; 4795 } 4796 4797 // special CALL handling when cursor node's href is "tel:XXX" 4798 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4799 String text = nativeCursorText(); 4800 if (!nativeCursorIsTextInput() && text != null 4801 && text.startsWith(SCHEME_TEL)) { 4802 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4803 getContext().startActivity(intent); 4804 return true; 4805 } 4806 } 4807 4808 // Bubble up the key event if 4809 // 1. it is a system key; or 4810 // 2. the host application wants to handle it; 4811 if (event.isSystem() 4812 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4813 return false; 4814 } 4815 4816 // accessibility support 4817 if (accessibilityScriptInjected()) { 4818 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4819 // if an accessibility script is injected we delegate to it the key handling. 4820 // this script is a screen reader which is a fully fledged solution for blind 4821 // users to navigate in and interact with web pages. 4822 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4823 return true; 4824 } else { 4825 // Clean up if accessibility was disabled after loading the current URL. 4826 mAccessibilityScriptInjected = false; 4827 } 4828 } else if (mAccessibilityInjector != null) { 4829 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4830 if (mAccessibilityInjector.onKeyEvent(event)) { 4831 // if an accessibility injector is present (no JavaScript enabled or the site 4832 // opts out injecting our JavaScript screen reader) we let it decide whether to 4833 // act on and consume the event. 4834 return true; 4835 } 4836 } else { 4837 // Clean up if accessibility was disabled after loading the current URL. 4838 mAccessibilityInjector = null; 4839 } 4840 } 4841 4842 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4843 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4844 if (nativePageShouldHandleShiftAndArrows()) { 4845 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4846 return true; 4847 } 4848 // always handle the navigation keys in the UI thread 4849 // Bubble up the key event as WebView doesn't handle it 4850 return false; 4851 } 4852 4853 if (isEnterActionKey(keyCode)) { 4854 // remove the long press message first 4855 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4856 mGotCenterDown = false; 4857 4858 if (mSelectingText) { 4859 if (mExtendSelection) { 4860 copySelection(); 4861 selectionDone(); 4862 } else { 4863 mExtendSelection = true; 4864 nativeSetExtendSelection(); 4865 invalidate(); // draw the i-beam instead of the arrow 4866 } 4867 return true; // discard press if copy in progress 4868 } 4869 4870 // perform the single click 4871 Rect visibleRect = sendOurVisibleRect(); 4872 // Note that sendOurVisibleRect calls viewToContent, so the 4873 // coordinates should be in content coordinates. 4874 if (!nativeCursorIntersects(visibleRect)) { 4875 return false; 4876 } 4877 WebViewCore.CursorData data = cursorData(); 4878 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4879 playSoundEffect(SoundEffectConstants.CLICK); 4880 if (nativeCursorIsTextInput()) { 4881 rebuildWebTextView(); 4882 centerKeyPressOnTextField(); 4883 if (inEditingMode()) { 4884 mWebTextView.setDefaultSelection(); 4885 } 4886 return true; 4887 } 4888 clearTextEntry(); 4889 nativeShowCursorTimed(); 4890 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4891 return true; 4892 } 4893 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4894 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4895 nativeCursorNodePointer()); 4896 return true; 4897 } 4898 } 4899 4900 // TODO: should we pass all the keys to DOM or check the meta tag 4901 if (nativeCursorWantsKeyEvents() || true) { 4902 // pass the key to DOM 4903 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4904 // return true as DOM handles the key 4905 return true; 4906 } 4907 4908 // Bubble up the key event as WebView doesn't handle it 4909 return false; 4910 } 4911 4912 /* 4913 * Enter selecting text mode, and see if CAB should be shown. 4914 * Returns true if the WebView is now in 4915 * selecting text mode (including if it was already in that mode, and this 4916 * method did nothing). 4917 */ 4918 private boolean setUpSelect(boolean selectWord, int x, int y) { 4919 if (0 == mNativeClass) return false; // client isn't initialized 4920 if (inFullScreenMode()) return false; 4921 if (mSelectingText) return true; 4922 nativeResetSelection(); 4923 if (selectWord && !nativeWordSelection(x, y)) { 4924 selectionDone(); 4925 return false; 4926 } 4927 mSelectCallback = new SelectActionModeCallback(); 4928 mSelectCallback.setWebView(this); 4929 if (startActionMode(mSelectCallback) == null) { 4930 // There is no ActionMode, so do not allow the user to modify a 4931 // selection. 4932 selectionDone(); 4933 return false; 4934 } 4935 mExtendSelection = false; 4936 mSelectingText = mDrawSelectionPointer = true; 4937 // don't let the picture change during text selection 4938 WebViewCore.pauseUpdatePicture(mWebViewCore); 4939 if (nativeHasCursorNode()) { 4940 Rect rect = nativeCursorNodeBounds(); 4941 mSelectX = contentToViewX(rect.left); 4942 mSelectY = contentToViewY(rect.top); 4943 } else if (mLastTouchY > getVisibleTitleHeight()) { 4944 mSelectX = mScrollX + mLastTouchX; 4945 mSelectY = mScrollY + mLastTouchY; 4946 } else { 4947 mSelectX = mScrollX + getViewWidth() / 2; 4948 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4949 } 4950 nativeHideCursor(); 4951 mMinAutoScrollX = 0; 4952 mMaxAutoScrollX = getViewWidth(); 4953 mMinAutoScrollY = 0; 4954 mMaxAutoScrollY = getViewHeightWithTitle(); 4955 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4956 viewToContentY(mSelectY), mScrollingLayerRect, 4957 mScrollingLayerBounds); 4958 if (mScrollingLayer != 0) { 4959 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4960 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4961 contentToViewX(mScrollingLayerBounds.left)); 4962 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4963 contentToViewX(mScrollingLayerBounds.right)); 4964 } 4965 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4966 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4967 contentToViewY(mScrollingLayerBounds.top)); 4968 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4969 contentToViewY(mScrollingLayerBounds.bottom)); 4970 } 4971 } 4972 mMinAutoScrollX += SELECT_SCROLL; 4973 mMaxAutoScrollX -= SELECT_SCROLL; 4974 mMinAutoScrollY += SELECT_SCROLL; 4975 mMaxAutoScrollY -= SELECT_SCROLL; 4976 return true; 4977 } 4978 4979 /** 4980 * Use this method to put the WebView into text selection mode. 4981 * Do not rely on this functionality; it will be deprecated in the future. 4982 * @deprecated This method is now obsolete. 4983 */ 4984 @Deprecated 4985 public void emulateShiftHeld() { 4986 setUpSelect(false, 0, 0); 4987 } 4988 4989 /** 4990 * Select all of the text in this WebView. 4991 * 4992 * @hide pending API council approval. 4993 */ 4994 public void selectAll() { 4995 if (0 == mNativeClass) return; // client isn't initialized 4996 if (inFullScreenMode()) return; 4997 if (!mSelectingText) { 4998 // retrieve a point somewhere within the text 4999 Point select = nativeSelectableText(); 5000 if (!selectText(select.x, select.y)) return; 5001 } 5002 nativeSelectAll(); 5003 mDrawSelectionPointer = false; 5004 mExtendSelection = true; 5005 invalidate(); 5006 } 5007 5008 /** 5009 * Called when the selection has been removed. 5010 */ 5011 void selectionDone() { 5012 if (mSelectingText) { 5013 mSelectingText = false; 5014 // finish is idempotent, so this is fine even if selectionDone was 5015 // called by mSelectCallback.onDestroyActionMode 5016 mSelectCallback.finish(); 5017 mSelectCallback = null; 5018 WebViewCore.resumePriority(); 5019 WebViewCore.resumeUpdatePicture(mWebViewCore); 5020 invalidate(); // redraw without selection 5021 mAutoScrollX = 0; 5022 mAutoScrollY = 0; 5023 mSentAutoScrollMessage = false; 5024 } 5025 } 5026 5027 /** 5028 * Copy the selection to the clipboard 5029 * 5030 * @hide pending API council approval. 5031 */ 5032 public boolean copySelection() { 5033 boolean copiedSomething = false; 5034 String selection = getSelection(); 5035 if (selection != null && selection != "") { 5036 if (DebugFlags.WEB_VIEW) { 5037 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5038 } 5039 Toast.makeText(mContext 5040 , com.android.internal.R.string.text_copied 5041 , Toast.LENGTH_SHORT).show(); 5042 copiedSomething = true; 5043 ClipboardManager cm = (ClipboardManager)getContext() 5044 .getSystemService(Context.CLIPBOARD_SERVICE); 5045 cm.setText(selection); 5046 } 5047 invalidate(); // remove selection region and pointer 5048 return copiedSomething; 5049 } 5050 5051 /** 5052 * @hide pending API Council approval. 5053 */ 5054 public SearchBox getSearchBox() { 5055 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5056 return null; 5057 } 5058 return mWebViewCore.getBrowserFrame().getSearchBox(); 5059 } 5060 5061 /** 5062 * Returns the currently highlighted text as a string. 5063 */ 5064 String getSelection() { 5065 if (mNativeClass == 0) return ""; 5066 return nativeGetSelection(); 5067 } 5068 5069 @Override 5070 protected void onAttachedToWindow() { 5071 super.onAttachedToWindow(); 5072 if (hasWindowFocus()) setActive(true); 5073 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5074 if (mGlobalLayoutListener == null) { 5075 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5076 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5077 } 5078 if (mScrollChangedListener == null) { 5079 mScrollChangedListener = new InnerScrollChangedListener(); 5080 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5081 } 5082 5083 addAccessibilityApisToJavaScript(); 5084 } 5085 5086 @Override 5087 protected void onDetachedFromWindow() { 5088 clearHelpers(); 5089 mZoomManager.dismissZoomPicker(); 5090 if (hasWindowFocus()) setActive(false); 5091 5092 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5093 if (mGlobalLayoutListener != null) { 5094 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5095 mGlobalLayoutListener = null; 5096 } 5097 if (mScrollChangedListener != null) { 5098 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5099 mScrollChangedListener = null; 5100 } 5101 5102 removeAccessibilityApisFromJavaScript(); 5103 5104 super.onDetachedFromWindow(); 5105 } 5106 5107 @Override 5108 protected void onVisibilityChanged(View changedView, int visibility) { 5109 super.onVisibilityChanged(changedView, visibility); 5110 // The zoomManager may be null if the webview is created from XML that 5111 // specifies the view's visibility param as not visible (see http://b/2794841) 5112 if (visibility != View.VISIBLE && mZoomManager != null) { 5113 mZoomManager.dismissZoomPicker(); 5114 } 5115 } 5116 5117 /** 5118 * @deprecated WebView no longer needs to implement 5119 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5120 */ 5121 @Deprecated 5122 public void onChildViewAdded(View parent, View child) {} 5123 5124 /** 5125 * @deprecated WebView no longer needs to implement 5126 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5127 */ 5128 @Deprecated 5129 public void onChildViewRemoved(View p, View child) {} 5130 5131 /** 5132 * @deprecated WebView should not have implemented 5133 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5134 */ 5135 @Deprecated 5136 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5137 } 5138 5139 void setActive(boolean active) { 5140 if (active) { 5141 if (hasFocus()) { 5142 // If our window regained focus, and we have focus, then begin 5143 // drawing the cursor ring 5144 mDrawCursorRing = true; 5145 setFocusControllerActive(true); 5146 if (mNativeClass != 0) { 5147 nativeRecordButtons(true, false, true); 5148 } 5149 } else { 5150 if (!inEditingMode()) { 5151 // If our window gained focus, but we do not have it, do not 5152 // draw the cursor ring. 5153 mDrawCursorRing = false; 5154 setFocusControllerActive(false); 5155 } 5156 // We do not call nativeRecordButtons here because we assume 5157 // that when we lost focus, or window focus, it got called with 5158 // false for the first parameter 5159 } 5160 } else { 5161 if (!mZoomManager.isZoomPickerVisible()) { 5162 /* 5163 * The external zoom controls come in their own window, so our 5164 * window loses focus. Our policy is to not draw the cursor ring 5165 * if our window is not focused, but this is an exception since 5166 * the user can still navigate the web page with the zoom 5167 * controls showing. 5168 */ 5169 mDrawCursorRing = false; 5170 } 5171 mKeysPressed.clear(); 5172 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5173 mTouchMode = TOUCH_DONE_MODE; 5174 if (mNativeClass != 0) { 5175 nativeRecordButtons(false, false, true); 5176 } 5177 setFocusControllerActive(false); 5178 } 5179 invalidate(); 5180 } 5181 5182 // To avoid drawing the cursor ring, and remove the TextView when our window 5183 // loses focus. 5184 @Override 5185 public void onWindowFocusChanged(boolean hasWindowFocus) { 5186 setActive(hasWindowFocus); 5187 if (hasWindowFocus) { 5188 JWebCoreJavaBridge.setActiveWebView(this); 5189 } else { 5190 JWebCoreJavaBridge.removeActiveWebView(this); 5191 } 5192 super.onWindowFocusChanged(hasWindowFocus); 5193 } 5194 5195 /* 5196 * Pass a message to WebCore Thread, telling the WebCore::Page's 5197 * FocusController to be "inactive" so that it will 5198 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5199 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5200 */ 5201 /* package */ void setFocusControllerActive(boolean active) { 5202 if (mWebViewCore == null) return; 5203 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5204 // Need to send this message after the document regains focus. 5205 if (active && mListBoxMessage != null) { 5206 mWebViewCore.sendMessage(mListBoxMessage); 5207 mListBoxMessage = null; 5208 } 5209 } 5210 5211 @Override 5212 protected void onFocusChanged(boolean focused, int direction, 5213 Rect previouslyFocusedRect) { 5214 if (DebugFlags.WEB_VIEW) { 5215 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5216 } 5217 if (focused) { 5218 // When we regain focus, if we have window focus, resume drawing 5219 // the cursor ring 5220 if (hasWindowFocus()) { 5221 mDrawCursorRing = true; 5222 if (mNativeClass != 0) { 5223 nativeRecordButtons(true, false, true); 5224 } 5225 setFocusControllerActive(true); 5226 //} else { 5227 // The WebView has gained focus while we do not have 5228 // windowfocus. When our window lost focus, we should have 5229 // called nativeRecordButtons(false...) 5230 } 5231 } else { 5232 // When we lost focus, unless focus went to the TextView (which is 5233 // true if we are in editing mode), stop drawing the cursor ring. 5234 if (!inEditingMode()) { 5235 mDrawCursorRing = false; 5236 if (mNativeClass != 0) { 5237 nativeRecordButtons(false, false, true); 5238 } 5239 setFocusControllerActive(false); 5240 } 5241 mKeysPressed.clear(); 5242 } 5243 5244 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5245 } 5246 5247 void setGLRectViewport() { 5248 // Use the getGlobalVisibleRect() to get the intersection among the parents 5249 // visible == false means we're clipped - send a null rect down to indicate that 5250 // we should not draw 5251 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5252 if (visible) { 5253 // Then need to invert the Y axis, just for GL 5254 View rootView = getRootView(); 5255 int rootViewHeight = rootView.getHeight(); 5256 int savedWebViewBottom = mGLRectViewport.bottom; 5257 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5258 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5259 mGLViewportEmpty = false; 5260 } else { 5261 mGLViewportEmpty = true; 5262 } 5263 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport); 5264 } 5265 5266 /** 5267 * @hide 5268 */ 5269 @Override 5270 protected boolean setFrame(int left, int top, int right, int bottom) { 5271 boolean changed = super.setFrame(left, top, right, bottom); 5272 if (!changed && mHeightCanMeasure) { 5273 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5274 // in WebViewCore after we get the first layout. We do call 5275 // requestLayout() when we get contentSizeChanged(). But the View 5276 // system won't call onSizeChanged if the dimension is not changed. 5277 // In this case, we need to call sendViewSizeZoom() explicitly to 5278 // notify the WebKit about the new dimensions. 5279 sendViewSizeZoom(false); 5280 } 5281 setGLRectViewport(); 5282 return changed; 5283 } 5284 5285 @Override 5286 protected void onSizeChanged(int w, int h, int ow, int oh) { 5287 super.onSizeChanged(w, h, ow, oh); 5288 5289 // adjust the max viewport width depending on the view dimensions. This 5290 // is to ensure the scaling is not going insane. So do not shrink it if 5291 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5292 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5293 if (newMaxViewportWidth > sMaxViewportWidth) { 5294 sMaxViewportWidth = newMaxViewportWidth; 5295 } 5296 5297 mZoomManager.onSizeChanged(w, h, ow, oh); 5298 } 5299 5300 @Override 5301 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5302 super.onScrollChanged(l, t, oldl, oldt); 5303 if (!mInOverScrollMode) { 5304 sendOurVisibleRect(); 5305 // update WebKit if visible title bar height changed. The logic is same 5306 // as getVisibleTitleHeight. 5307 int titleHeight = getTitleHeight(); 5308 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5309 sendViewSizeZoom(false); 5310 } 5311 } 5312 } 5313 5314 @Override 5315 public boolean dispatchKeyEvent(KeyEvent event) { 5316 switch (event.getAction()) { 5317 case KeyEvent.ACTION_DOWN: 5318 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5319 break; 5320 case KeyEvent.ACTION_MULTIPLE: 5321 // Always accept the action. 5322 break; 5323 case KeyEvent.ACTION_UP: 5324 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5325 if (location == -1) { 5326 // We did not receive the key down for this key, so do not 5327 // handle the key up. 5328 return false; 5329 } else { 5330 // We did receive the key down. Handle the key up, and 5331 // remove it from our pressed keys. 5332 mKeysPressed.remove(location); 5333 } 5334 break; 5335 default: 5336 // Accept the action. This should not happen, unless a new 5337 // action is added to KeyEvent. 5338 break; 5339 } 5340 if (inEditingMode() && mWebTextView.isFocused()) { 5341 // Ensure that the WebTextView gets the event, even if it does 5342 // not currently have a bounds. 5343 return mWebTextView.dispatchKeyEvent(event); 5344 } else { 5345 return super.dispatchKeyEvent(event); 5346 } 5347 } 5348 5349 // Here are the snap align logic: 5350 // 1. If it starts nearly horizontally or vertically, snap align; 5351 // 2. If there is a dramitic direction change, let it go; 5352 // 3. If there is a same direction back and forth, lock it. 5353 5354 // adjustable parameters 5355 private int mMinLockSnapReverseDistance; 5356 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5357 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5358 5359 private boolean hitFocusedPlugin(int contentX, int contentY) { 5360 if (DebugFlags.WEB_VIEW) { 5361 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5362 Rect r = nativeFocusNodeBounds(); 5363 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5364 + ", " + r.right + ", " + r.bottom + ")"); 5365 } 5366 return nativeFocusIsPlugin() 5367 && nativeFocusNodeBounds().contains(contentX, contentY); 5368 } 5369 5370 private boolean shouldForwardTouchEvent() { 5371 return mFullScreenHolder != null || (mForwardTouchEvents 5372 && !mSelectingText 5373 && mPreventDefault != PREVENT_DEFAULT_IGNORE); 5374 } 5375 5376 private boolean inFullScreenMode() { 5377 return mFullScreenHolder != null; 5378 } 5379 5380 private void dismissFullScreenMode() { 5381 if (inFullScreenMode()) { 5382 mFullScreenHolder.dismiss(); 5383 mFullScreenHolder = null; 5384 } 5385 } 5386 5387 void onPinchToZoomAnimationStart() { 5388 // cancel the single touch handling 5389 cancelTouch(); 5390 onZoomAnimationStart(); 5391 } 5392 5393 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5394 onZoomAnimationEnd(); 5395 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5396 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5397 // as it may trigger the unwanted fling. 5398 mTouchMode = TOUCH_PINCH_DRAG; 5399 mConfirmMove = true; 5400 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5401 } 5402 5403 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5404 // layer is found. 5405 private void startScrollingLayer(float x, float y) { 5406 int contentX = viewToContentX((int) x + mScrollX); 5407 int contentY = viewToContentY((int) y + mScrollY); 5408 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5409 mScrollingLayerRect, mScrollingLayerBounds); 5410 if (mScrollingLayer != 0) { 5411 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5412 } 5413 } 5414 5415 // 1/(density * density) used to compute the distance between points. 5416 // Computed in init(). 5417 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5418 5419 // The distance between two points reported in onTouchEvent scaled by the 5420 // density of the screen. 5421 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5422 5423 @Override 5424 public boolean onTouchEvent(MotionEvent ev) { 5425 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5426 return false; 5427 } 5428 5429 if (DebugFlags.WEB_VIEW) { 5430 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5431 + " mTouchMode=" + mTouchMode 5432 + " numPointers=" + ev.getPointerCount()); 5433 } 5434 5435 int action = ev.getActionMasked(); 5436 if (ev.getPointerCount() > 1) { // Multi-touch 5437 mIsHandlingMultiTouch = true; 5438 5439 // If WebKit already showed no interests in this sequence of events, 5440 // WebView handles them directly. 5441 if (mPreventDefault == PREVENT_DEFAULT_NO) { 5442 handleMultiTouchInWebView(ev); 5443 } else { 5444 passMultiTouchToWebKit(ev); 5445 } 5446 return true; 5447 } else { 5448 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 5449 if (detector != null) { 5450 // ScaleGestureDetector needs a consistent event stream to operate properly. 5451 // It won't take any action with fewer than two pointers, but it needs to 5452 // update internal bookkeeping state. 5453 detector.onTouchEvent(ev); 5454 } 5455 } 5456 5457 // Skip ACTION_MOVE for single touch if it's still handling multi-touch. 5458 if (mIsHandlingMultiTouch && action == MotionEvent.ACTION_MOVE) { 5459 return false; 5460 } 5461 5462 return handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 5463 } 5464 5465 /* 5466 * Common code for single touch and multi-touch. 5467 * (x, y) denotes current focus point, which is the touch point for single touch 5468 * and the middle point for multi-touch. 5469 */ 5470 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5471 long eventTime = ev.getEventTime(); 5472 5473 5474 // Due to the touch screen edge effect, a touch closer to the edge 5475 // always snapped to the edge. As getViewWidth() can be different from 5476 // getWidth() due to the scrollbar, adjusting the point to match 5477 // getViewWidth(). Same applied to the height. 5478 x = Math.min(x, getViewWidth() - 1); 5479 y = Math.min(y, getViewHeightWithTitle() - 1); 5480 5481 int deltaX = mLastTouchX - x; 5482 int deltaY = mLastTouchY - y; 5483 int contentX = viewToContentX(x + mScrollX); 5484 int contentY = viewToContentY(y + mScrollY); 5485 5486 switch (action) { 5487 case MotionEvent.ACTION_DOWN: { 5488 mPreventDefault = PREVENT_DEFAULT_NO; 5489 mConfirmMove = false; 5490 mIsHandlingMultiTouch = false; 5491 mInitialHitTestResult = null; 5492 if (!mScroller.isFinished()) { 5493 // stop the current scroll animation, but if this is 5494 // the start of a fling, allow it to add to the current 5495 // fling's velocity 5496 mScroller.abortAnimation(); 5497 mTouchMode = TOUCH_DRAG_START_MODE; 5498 mConfirmMove = true; 5499 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5500 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5501 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5502 if (getSettings().supportTouchOnly()) { 5503 removeTouchHighlight(true); 5504 } 5505 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5506 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5507 } else { 5508 // commit the short press action for the previous tap 5509 doShortPress(); 5510 mTouchMode = TOUCH_INIT_MODE; 5511 mDeferTouchProcess = (!inFullScreenMode() 5512 && mForwardTouchEvents) ? hitFocusedPlugin( 5513 contentX, contentY) : false; 5514 } 5515 } else { // the normal case 5516 mTouchMode = TOUCH_INIT_MODE; 5517 mDeferTouchProcess = (!inFullScreenMode() 5518 && mForwardTouchEvents) ? hitFocusedPlugin( 5519 contentX, contentY) : false; 5520 mWebViewCore.sendMessage( 5521 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5522 if (getSettings().supportTouchOnly()) { 5523 TouchHighlightData data = new TouchHighlightData(); 5524 data.mX = contentX; 5525 data.mY = contentY; 5526 data.mSlop = viewToContentDimension(mNavSlop); 5527 mWebViewCore.sendMessageDelayed( 5528 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5529 ViewConfiguration.getTapTimeout()); 5530 if (DEBUG_TOUCH_HIGHLIGHT) { 5531 if (getSettings().getNavDump()) { 5532 mTouchHighlightX = (int) x + mScrollX; 5533 mTouchHighlightY = (int) y + mScrollY; 5534 mPrivateHandler.postDelayed(new Runnable() { 5535 public void run() { 5536 mTouchHighlightX = mTouchHighlightY = 0; 5537 invalidate(); 5538 } 5539 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5540 } 5541 } 5542 } 5543 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5544 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5545 (eventTime - mLastTouchUpTime), eventTime); 5546 } 5547 if (mSelectingText) { 5548 mDrawSelectionPointer = false; 5549 mSelectionStarted = nativeStartSelection(contentX, contentY); 5550 if (DebugFlags.WEB_VIEW) { 5551 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5552 } 5553 invalidate(); 5554 } 5555 } 5556 // Trigger the link 5557 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5558 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5559 mPrivateHandler.sendEmptyMessageDelayed( 5560 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5561 mPrivateHandler.sendEmptyMessageDelayed( 5562 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5563 if (inFullScreenMode() || mDeferTouchProcess) { 5564 mPreventDefault = PREVENT_DEFAULT_YES; 5565 } else if (mForwardTouchEvents) { 5566 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5567 } else { 5568 mPreventDefault = PREVENT_DEFAULT_NO; 5569 } 5570 // pass the touch events from UI thread to WebCore thread 5571 if (shouldForwardTouchEvent()) { 5572 TouchEventData ted = new TouchEventData(); 5573 ted.mAction = action; 5574 ted.mIds = new int[1]; 5575 ted.mIds[0] = ev.getPointerId(0); 5576 ted.mPoints = new Point[1]; 5577 ted.mPoints[0] = new Point(contentX, contentY); 5578 ted.mMetaState = ev.getMetaState(); 5579 ted.mReprocess = mDeferTouchProcess; 5580 ted.mNativeLayer = nativeScrollableLayer( 5581 contentX, contentY, ted.mNativeLayerRect, null); 5582 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5583 if (mDeferTouchProcess) { 5584 // still needs to set them for compute deltaX/Y 5585 mLastTouchX = x; 5586 mLastTouchY = y; 5587 break; 5588 } 5589 if (!inFullScreenMode()) { 5590 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5591 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5592 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5593 action, 0), TAP_TIMEOUT); 5594 } 5595 } 5596 } 5597 startTouch(x, y, eventTime); 5598 break; 5599 } 5600 case MotionEvent.ACTION_MOVE: { 5601 boolean firstMove = false; 5602 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5603 >= mTouchSlopSquare) { 5604 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5605 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5606 mConfirmMove = true; 5607 firstMove = true; 5608 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5609 mTouchMode = TOUCH_INIT_MODE; 5610 } 5611 if (getSettings().supportTouchOnly()) { 5612 removeTouchHighlight(true); 5613 } 5614 } 5615 // pass the touch events from UI thread to WebCore thread 5616 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5617 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5618 TouchEventData ted = new TouchEventData(); 5619 ted.mAction = action; 5620 ted.mIds = new int[1]; 5621 ted.mIds[0] = ev.getPointerId(0); 5622 ted.mPoints = new Point[1]; 5623 ted.mPoints[0] = new Point(contentX, contentY); 5624 ted.mMetaState = ev.getMetaState(); 5625 ted.mReprocess = mDeferTouchProcess; 5626 ted.mNativeLayer = mScrollingLayer; 5627 ted.mNativeLayerRect.set(mScrollingLayerRect); 5628 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5629 mLastSentTouchTime = eventTime; 5630 if (mDeferTouchProcess) { 5631 break; 5632 } 5633 if (firstMove && !inFullScreenMode()) { 5634 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5635 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5636 action, 0), TAP_TIMEOUT); 5637 } 5638 } 5639 if (mTouchMode == TOUCH_DONE_MODE 5640 || mPreventDefault == PREVENT_DEFAULT_YES) { 5641 // no dragging during scroll zoom animation, or when prevent 5642 // default is yes 5643 break; 5644 } 5645 if (mVelocityTracker == null) { 5646 Log.e(LOGTAG, "Got null mVelocityTracker when " 5647 + "mPreventDefault = " + mPreventDefault 5648 + " mDeferTouchProcess = " + mDeferTouchProcess 5649 + " mTouchMode = " + mTouchMode); 5650 } else { 5651 mVelocityTracker.addMovement(ev); 5652 } 5653 if (mSelectingText && mSelectionStarted) { 5654 if (DebugFlags.WEB_VIEW) { 5655 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5656 } 5657 ViewParent parent = getParent(); 5658 if (parent != null) { 5659 parent.requestDisallowInterceptTouchEvent(true); 5660 } 5661 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5662 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5663 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5664 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5665 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5666 && !mSentAutoScrollMessage) { 5667 mSentAutoScrollMessage = true; 5668 mPrivateHandler.sendEmptyMessageDelayed( 5669 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5670 } 5671 if (deltaX != 0 || deltaY != 0) { 5672 nativeExtendSelection(contentX, contentY); 5673 invalidate(); 5674 } 5675 break; 5676 } 5677 5678 if (mTouchMode != TOUCH_DRAG_MODE && 5679 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5680 5681 if (!mConfirmMove) { 5682 break; 5683 } 5684 5685 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5686 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5687 // track mLastTouchTime as we may need to do fling at 5688 // ACTION_UP 5689 mLastTouchTime = eventTime; 5690 break; 5691 } 5692 5693 // Only lock dragging to one axis if we don't have a scale in progress. 5694 // Scaling implies free-roaming movement. Note this is only ever a question 5695 // if mZoomManager.supportsPanDuringZoom() is true. 5696 final ScaleGestureDetector detector = 5697 mZoomManager.getMultiTouchGestureDetector(); 5698 if (detector == null || !detector.isInProgress()) { 5699 // if it starts nearly horizontal or vertical, enforce it 5700 int ax = Math.abs(deltaX); 5701 int ay = Math.abs(deltaY); 5702 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5703 mSnapScrollMode = SNAP_X; 5704 mSnapPositive = deltaX > 0; 5705 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5706 mSnapScrollMode = SNAP_Y; 5707 mSnapPositive = deltaY > 0; 5708 } 5709 } 5710 5711 mTouchMode = TOUCH_DRAG_MODE; 5712 mLastTouchX = x; 5713 mLastTouchY = y; 5714 deltaX = 0; 5715 deltaY = 0; 5716 5717 startScrollingLayer(x, y); 5718 startDrag(); 5719 } 5720 5721 // do pan 5722 boolean done = false; 5723 boolean keepScrollBarsVisible = false; 5724 if (deltaX == 0 && deltaY == 0) { 5725 keepScrollBarsVisible = done = true; 5726 } else { 5727 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5728 int ax = Math.abs(deltaX); 5729 int ay = Math.abs(deltaY); 5730 if (mSnapScrollMode == SNAP_X) { 5731 // radical change means getting out of snap mode 5732 if (ay > MAX_SLOPE_FOR_DIAG * ax 5733 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5734 mSnapScrollMode = SNAP_NONE; 5735 } 5736 // reverse direction means lock in the snap mode 5737 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5738 (mSnapPositive 5739 ? deltaX < -mMinLockSnapReverseDistance 5740 : deltaX > mMinLockSnapReverseDistance)) { 5741 mSnapScrollMode |= SNAP_LOCK; 5742 } 5743 } else { 5744 // radical change means getting out of snap mode 5745 if (ax > MAX_SLOPE_FOR_DIAG * ay 5746 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5747 mSnapScrollMode = SNAP_NONE; 5748 } 5749 // reverse direction means lock in the snap mode 5750 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5751 (mSnapPositive 5752 ? deltaY < -mMinLockSnapReverseDistance 5753 : deltaY > mMinLockSnapReverseDistance)) { 5754 mSnapScrollMode |= SNAP_LOCK; 5755 } 5756 } 5757 } 5758 if (mSnapScrollMode != SNAP_NONE) { 5759 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5760 deltaY = 0; 5761 } else { 5762 deltaX = 0; 5763 } 5764 } 5765 if ((deltaX | deltaY) != 0) { 5766 if (deltaX != 0) { 5767 mLastTouchX = x; 5768 } 5769 if (deltaY != 0) { 5770 mLastTouchY = y; 5771 } 5772 mHeldMotionless = MOTIONLESS_FALSE; 5773 } 5774 mLastTouchTime = eventTime; 5775 } 5776 5777 doDrag(deltaX, deltaY); 5778 5779 // Turn off scrollbars when dragging a layer. 5780 if (keepScrollBarsVisible && 5781 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5782 if (mHeldMotionless != MOTIONLESS_TRUE) { 5783 mHeldMotionless = MOTIONLESS_TRUE; 5784 invalidate(); 5785 } 5786 // keep the scrollbar on the screen even there is no scroll 5787 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5788 false); 5789 // return false to indicate that we can't pan out of the 5790 // view space 5791 return !done; 5792 } 5793 break; 5794 } 5795 case MotionEvent.ACTION_UP: { 5796 if (!isFocused()) requestFocus(); 5797 // pass the touch events from UI thread to WebCore thread 5798 if (shouldForwardTouchEvent()) { 5799 TouchEventData ted = new TouchEventData(); 5800 ted.mIds = new int[1]; 5801 ted.mIds[0] = ev.getPointerId(0); 5802 ted.mAction = action; 5803 ted.mPoints = new Point[1]; 5804 ted.mPoints[0] = new Point(contentX, contentY); 5805 ted.mMetaState = ev.getMetaState(); 5806 ted.mReprocess = mDeferTouchProcess; 5807 ted.mNativeLayer = mScrollingLayer; 5808 ted.mNativeLayerRect.set(mScrollingLayerRect); 5809 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5810 } 5811 mLastTouchUpTime = eventTime; 5812 if (mSentAutoScrollMessage) { 5813 mAutoScrollX = mAutoScrollY = 0; 5814 } 5815 switch (mTouchMode) { 5816 case TOUCH_DOUBLE_TAP_MODE: // double tap 5817 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5818 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5819 if (inFullScreenMode() || mDeferTouchProcess) { 5820 TouchEventData ted = new TouchEventData(); 5821 ted.mIds = new int[1]; 5822 ted.mIds[0] = ev.getPointerId(0); 5823 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5824 ted.mPoints = new Point[1]; 5825 ted.mPoints[0] = new Point(contentX, contentY); 5826 ted.mMetaState = ev.getMetaState(); 5827 ted.mReprocess = mDeferTouchProcess; 5828 ted.mNativeLayer = nativeScrollableLayer( 5829 contentX, contentY, 5830 ted.mNativeLayerRect, null); 5831 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5832 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5833 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5834 mTouchMode = TOUCH_DONE_MODE; 5835 } 5836 break; 5837 case TOUCH_INIT_MODE: // tap 5838 case TOUCH_SHORTPRESS_START_MODE: 5839 case TOUCH_SHORTPRESS_MODE: 5840 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5841 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5842 if (mConfirmMove) { 5843 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5844 " WebCore's response for touch down."); 5845 if (mPreventDefault != PREVENT_DEFAULT_YES 5846 && (computeMaxScrollX() > 0 5847 || computeMaxScrollY() > 0)) { 5848 // If the user has performed a very quick touch 5849 // sequence it is possible that we may get here 5850 // before WebCore has had a chance to process the events. 5851 // In this case, any call to preventDefault in the 5852 // JS touch handler will not have been executed yet. 5853 // Hence we will see both the UI (now) and WebCore 5854 // (when context switches) handling the event, 5855 // regardless of whether the web developer actually 5856 // doeses preventDefault in their touch handler. This 5857 // is the nature of our asynchronous touch model. 5858 5859 // we will not rewrite drag code here, but we 5860 // will try fling if it applies. 5861 WebViewCore.reducePriority(); 5862 // to get better performance, pause updating the 5863 // picture 5864 WebViewCore.pauseUpdatePicture(mWebViewCore); 5865 // fall through to TOUCH_DRAG_MODE 5866 } else { 5867 // WebKit may consume the touch event and modify 5868 // DOM. drawContentPicture() will be called with 5869 // animateSroll as true for better performance. 5870 // Force redraw in high-quality. 5871 invalidate(); 5872 break; 5873 } 5874 } else { 5875 if (mSelectingText) { 5876 // tapping on selection or controls does nothing 5877 if (!nativeHitSelection(contentX, contentY)) { 5878 selectionDone(); 5879 } 5880 break; 5881 } 5882 // only trigger double tap if the WebView is 5883 // scalable 5884 if (mTouchMode == TOUCH_INIT_MODE 5885 && (canZoomIn() || canZoomOut())) { 5886 mPrivateHandler.sendEmptyMessageDelayed( 5887 RELEASE_SINGLE_TAP, ViewConfiguration 5888 .getDoubleTapTimeout()); 5889 } else { 5890 doShortPress(); 5891 } 5892 break; 5893 } 5894 case TOUCH_DRAG_MODE: 5895 case TOUCH_DRAG_LAYER_MODE: 5896 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5897 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5898 // if the user waits a while w/o moving before the 5899 // up, we don't want to do a fling 5900 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5901 if (mVelocityTracker == null) { 5902 Log.e(LOGTAG, "Got null mVelocityTracker when " 5903 + "mPreventDefault = " 5904 + mPreventDefault 5905 + " mDeferTouchProcess = " 5906 + mDeferTouchProcess); 5907 } else { 5908 mVelocityTracker.addMovement(ev); 5909 } 5910 // set to MOTIONLESS_IGNORE so that it won't keep 5911 // removing and sending message in 5912 // drawCoreAndCursorRing() 5913 mHeldMotionless = MOTIONLESS_IGNORE; 5914 doFling(); 5915 break; 5916 } else { 5917 if (mScroller.springBack(mScrollX, mScrollY, 0, 5918 computeMaxScrollX(), 0, 5919 computeMaxScrollY())) { 5920 invalidate(); 5921 } 5922 } 5923 // redraw in high-quality, as we're done dragging 5924 mHeldMotionless = MOTIONLESS_TRUE; 5925 invalidate(); 5926 // fall through 5927 case TOUCH_DRAG_START_MODE: 5928 // TOUCH_DRAG_START_MODE should not happen for the real 5929 // device as we almost certain will get a MOVE. But this 5930 // is possible on emulator. 5931 mLastVelocity = 0; 5932 WebViewCore.resumePriority(); 5933 if (!mSelectingText) { 5934 WebViewCore.resumeUpdatePicture(mWebViewCore); 5935 } 5936 break; 5937 } 5938 stopTouch(); 5939 break; 5940 } 5941 case MotionEvent.ACTION_CANCEL: { 5942 if (mTouchMode == TOUCH_DRAG_MODE) { 5943 mScroller.springBack(mScrollX, mScrollY, 0, 5944 computeMaxScrollX(), 0, computeMaxScrollY()); 5945 invalidate(); 5946 } 5947 cancelWebCoreTouchEvent(contentX, contentY, false); 5948 cancelTouch(); 5949 break; 5950 } 5951 } 5952 return true; 5953 } 5954 5955 private void passMultiTouchToWebKit(MotionEvent ev) { 5956 TouchEventData ted = new TouchEventData(); 5957 ted.mAction = ev.getActionMasked(); 5958 final int count = ev.getPointerCount(); 5959 ted.mIds = new int[count]; 5960 ted.mPoints = new Point[count]; 5961 for (int c = 0; c < count; c++) { 5962 ted.mIds[c] = ev.getPointerId(c); 5963 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5964 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5965 ted.mPoints[c] = new Point(x, y); 5966 } 5967 ted.mMetaState = ev.getMetaState(); 5968 ted.mReprocess = true; 5969 ted.mMotionEvent = MotionEvent.obtain(ev); 5970 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5971 cancelLongPress(); 5972 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5973 mPreventDefault = PREVENT_DEFAULT_IGNORE; 5974 } 5975 5976 private void handleMultiTouchInWebView(MotionEvent ev) { 5977 if (DebugFlags.WEB_VIEW) { 5978 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5979 + " mTouchMode=" + mTouchMode 5980 + " numPointers=" + ev.getPointerCount() 5981 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5982 } 5983 5984 final ScaleGestureDetector detector = 5985 mZoomManager.getMultiTouchGestureDetector(); 5986 5987 // A few apps use WebView but don't instantiate gesture detector. 5988 // We don't need to support multi touch for them. 5989 if (detector == null) return; 5990 5991 float x = ev.getX(); 5992 float y = ev.getY(); 5993 5994 detector.onTouchEvent(ev); 5995 5996 if (detector.isInProgress()) { 5997 if (DebugFlags.WEB_VIEW) { 5998 Log.v(LOGTAG, "detector is in progress"); 5999 } 6000 mLastTouchTime = ev.getEventTime(); 6001 x = detector.getFocusX(); 6002 y = detector.getFocusY(); 6003 6004 cancelLongPress(); 6005 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6006 if (!mZoomManager.supportsPanDuringZoom()) { 6007 return; 6008 } 6009 mTouchMode = TOUCH_DRAG_MODE; 6010 if (mVelocityTracker == null) { 6011 mVelocityTracker = VelocityTracker.obtain(); 6012 } 6013 } 6014 6015 int action = ev.getActionMasked(); 6016 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6017 cancelTouch(); 6018 action = MotionEvent.ACTION_DOWN; 6019 } else if (action == MotionEvent.ACTION_POINTER_UP) { 6020 // set mLastTouchX/Y to the remaining point 6021 mLastTouchX = Math.round(x); 6022 mLastTouchY = Math.round(y); 6023 mIsHandlingMultiTouch = false; 6024 } else if (action == MotionEvent.ACTION_MOVE) { 6025 // negative x or y indicate it is on the edge, skip it. 6026 if (x < 0 || y < 0) { 6027 return; 6028 } 6029 } 6030 6031 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6032 } 6033 6034 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6035 if (shouldForwardTouchEvent()) { 6036 if (removeEvents) { 6037 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6038 } 6039 TouchEventData ted = new TouchEventData(); 6040 ted.mIds = new int[1]; 6041 ted.mIds[0] = 0; 6042 ted.mPoints = new Point[1]; 6043 ted.mPoints[0] = new Point(x, y); 6044 ted.mAction = MotionEvent.ACTION_CANCEL; 6045 ted.mNativeLayer = nativeScrollableLayer( 6046 x, y, ted.mNativeLayerRect, null); 6047 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6048 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6049 } 6050 } 6051 6052 private void startTouch(float x, float y, long eventTime) { 6053 // Remember where the motion event started 6054 mLastTouchX = Math.round(x); 6055 mLastTouchY = Math.round(y); 6056 mLastTouchTime = eventTime; 6057 mVelocityTracker = VelocityTracker.obtain(); 6058 mSnapScrollMode = SNAP_NONE; 6059 } 6060 6061 private void startDrag() { 6062 WebViewCore.reducePriority(); 6063 // to get better performance, pause updating the picture 6064 WebViewCore.pauseUpdatePicture(mWebViewCore); 6065 if (!mDragFromTextInput) { 6066 nativeHideCursor(); 6067 } 6068 6069 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6070 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6071 mZoomManager.invokeZoomPicker(); 6072 } 6073 } 6074 6075 private void doDrag(int deltaX, int deltaY) { 6076 if ((deltaX | deltaY) != 0) { 6077 int oldX = mScrollX; 6078 int oldY = mScrollY; 6079 int rangeX = computeMaxScrollX(); 6080 int rangeY = computeMaxScrollY(); 6081 int overscrollDistance = mOverscrollDistance; 6082 6083 // Check for the original scrolling layer in case we change 6084 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6085 // reached the edge of a layer but mScrollingLayer will be non-zero 6086 // if we initiated the drag on a layer. 6087 if (mScrollingLayer != 0) { 6088 final int contentX = viewToContentDimension(deltaX); 6089 final int contentY = viewToContentDimension(deltaY); 6090 6091 // Check the scrolling bounds to see if we will actually do any 6092 // scrolling. The rectangle is in document coordinates. 6093 final int maxX = mScrollingLayerRect.right; 6094 final int maxY = mScrollingLayerRect.bottom; 6095 final int resultX = Math.max(0, 6096 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6097 final int resultY = Math.max(0, 6098 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6099 6100 if (resultX != mScrollingLayerRect.left || 6101 resultY != mScrollingLayerRect.top) { 6102 // In case we switched to dragging the page. 6103 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6104 deltaX = contentX; 6105 deltaY = contentY; 6106 oldX = mScrollingLayerRect.left; 6107 oldY = mScrollingLayerRect.top; 6108 rangeX = maxX; 6109 rangeY = maxY; 6110 } else { 6111 // Scroll the main page if we are not going to scroll the 6112 // layer. This does not reset mScrollingLayer in case the 6113 // user changes directions and the layer can scroll the 6114 // other way. 6115 mTouchMode = TOUCH_DRAG_MODE; 6116 } 6117 } 6118 6119 if (mOverScrollGlow != null) { 6120 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6121 } 6122 6123 overScrollBy(deltaX, deltaY, oldX, oldY, 6124 rangeX, rangeY, 6125 mOverscrollDistance, mOverscrollDistance, true); 6126 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6127 invalidate(); 6128 } 6129 } 6130 mZoomManager.keepZoomPickerVisible(); 6131 } 6132 6133 private void stopTouch() { 6134 // we also use mVelocityTracker == null to tell us that we are 6135 // not "moving around", so we can take the slower/prettier 6136 // mode in the drawing code 6137 if (mVelocityTracker != null) { 6138 mVelocityTracker.recycle(); 6139 mVelocityTracker = null; 6140 } 6141 6142 // Release any pulled glows 6143 if (mOverScrollGlow != null) { 6144 mOverScrollGlow.releaseAll(); 6145 } 6146 } 6147 6148 private void cancelTouch() { 6149 // we also use mVelocityTracker == null to tell us that we are 6150 // not "moving around", so we can take the slower/prettier 6151 // mode in the drawing code 6152 if (mVelocityTracker != null) { 6153 mVelocityTracker.recycle(); 6154 mVelocityTracker = null; 6155 } 6156 6157 if ((mTouchMode == TOUCH_DRAG_MODE 6158 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6159 WebViewCore.resumePriority(); 6160 WebViewCore.resumeUpdatePicture(mWebViewCore); 6161 } 6162 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6163 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6164 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6165 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6166 if (getSettings().supportTouchOnly()) { 6167 removeTouchHighlight(true); 6168 } 6169 mHeldMotionless = MOTIONLESS_TRUE; 6170 mTouchMode = TOUCH_DONE_MODE; 6171 nativeHideCursor(); 6172 } 6173 6174 @Override 6175 public boolean onGenericMotionEvent(MotionEvent event) { 6176 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6177 switch (event.getAction()) { 6178 case MotionEvent.ACTION_SCROLL: { 6179 final float vscroll; 6180 final float hscroll; 6181 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6182 vscroll = 0; 6183 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6184 } else { 6185 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6186 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6187 } 6188 if (hscroll != 0 || vscroll != 0) { 6189 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6190 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6191 if (pinScrollBy(hdelta, vdelta, true, 0)) { 6192 return true; 6193 } 6194 } 6195 } 6196 } 6197 } 6198 return super.onGenericMotionEvent(event); 6199 } 6200 6201 private long mTrackballFirstTime = 0; 6202 private long mTrackballLastTime = 0; 6203 private float mTrackballRemainsX = 0.0f; 6204 private float mTrackballRemainsY = 0.0f; 6205 private int mTrackballXMove = 0; 6206 private int mTrackballYMove = 0; 6207 private boolean mSelectingText = false; 6208 private boolean mSelectionStarted = false; 6209 private boolean mExtendSelection = false; 6210 private boolean mDrawSelectionPointer = false; 6211 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6212 private static final int TRACKBALL_TIMEOUT = 200; 6213 private static final int TRACKBALL_WAIT = 100; 6214 private static final int TRACKBALL_SCALE = 400; 6215 private static final int TRACKBALL_SCROLL_COUNT = 5; 6216 private static final int TRACKBALL_MOVE_COUNT = 10; 6217 private static final int TRACKBALL_MULTIPLIER = 3; 6218 private static final int SELECT_CURSOR_OFFSET = 16; 6219 private static final int SELECT_SCROLL = 5; 6220 private int mSelectX = 0; 6221 private int mSelectY = 0; 6222 private boolean mFocusSizeChanged = false; 6223 private boolean mTrackballDown = false; 6224 private long mTrackballUpTime = 0; 6225 private long mLastCursorTime = 0; 6226 private Rect mLastCursorBounds; 6227 6228 // Set by default; BrowserActivity clears to interpret trackball data 6229 // directly for movement. Currently, the framework only passes 6230 // arrow key events, not trackball events, from one child to the next 6231 private boolean mMapTrackballToArrowKeys = true; 6232 6233 public void setMapTrackballToArrowKeys(boolean setMap) { 6234 mMapTrackballToArrowKeys = setMap; 6235 } 6236 6237 void resetTrackballTime() { 6238 mTrackballLastTime = 0; 6239 } 6240 6241 @Override 6242 public boolean onTrackballEvent(MotionEvent ev) { 6243 long time = ev.getEventTime(); 6244 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6245 if (ev.getY() > 0) pageDown(true); 6246 if (ev.getY() < 0) pageUp(true); 6247 return true; 6248 } 6249 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6250 if (mSelectingText) { 6251 return true; // discard press if copy in progress 6252 } 6253 mTrackballDown = true; 6254 if (mNativeClass == 0) { 6255 return false; 6256 } 6257 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6258 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6259 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6260 nativeSelectBestAt(mLastCursorBounds); 6261 } 6262 if (DebugFlags.WEB_VIEW) { 6263 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6264 + " time=" + time 6265 + " mLastCursorTime=" + mLastCursorTime); 6266 } 6267 if (isInTouchMode()) requestFocusFromTouch(); 6268 return false; // let common code in onKeyDown at it 6269 } 6270 if (ev.getAction() == MotionEvent.ACTION_UP) { 6271 // LONG_PRESS_CENTER is set in common onKeyDown 6272 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6273 mTrackballDown = false; 6274 mTrackballUpTime = time; 6275 if (mSelectingText) { 6276 if (mExtendSelection) { 6277 copySelection(); 6278 selectionDone(); 6279 } else { 6280 mExtendSelection = true; 6281 nativeSetExtendSelection(); 6282 invalidate(); // draw the i-beam instead of the arrow 6283 } 6284 return true; // discard press if copy in progress 6285 } 6286 if (DebugFlags.WEB_VIEW) { 6287 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6288 + " time=" + time 6289 ); 6290 } 6291 return false; // let common code in onKeyUp at it 6292 } 6293 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6294 AccessibilityManager.getInstance(mContext).isEnabled()) { 6295 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6296 return false; 6297 } 6298 if (mTrackballDown) { 6299 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6300 return true; // discard move if trackball is down 6301 } 6302 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6303 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6304 return true; 6305 } 6306 // TODO: alternatively we can do panning as touch does 6307 switchOutDrawHistory(); 6308 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6309 if (DebugFlags.WEB_VIEW) { 6310 Log.v(LOGTAG, "onTrackballEvent time=" 6311 + time + " last=" + mTrackballLastTime); 6312 } 6313 mTrackballFirstTime = time; 6314 mTrackballXMove = mTrackballYMove = 0; 6315 } 6316 mTrackballLastTime = time; 6317 if (DebugFlags.WEB_VIEW) { 6318 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6319 } 6320 mTrackballRemainsX += ev.getX(); 6321 mTrackballRemainsY += ev.getY(); 6322 doTrackball(time, ev.getMetaState()); 6323 return true; 6324 } 6325 6326 void moveSelection(float xRate, float yRate) { 6327 if (mNativeClass == 0) 6328 return; 6329 int width = getViewWidth(); 6330 int height = getViewHeight(); 6331 mSelectX += xRate; 6332 mSelectY += yRate; 6333 int maxX = width + mScrollX; 6334 int maxY = height + mScrollY; 6335 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6336 , mSelectX)); 6337 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6338 , mSelectY)); 6339 if (DebugFlags.WEB_VIEW) { 6340 Log.v(LOGTAG, "moveSelection" 6341 + " mSelectX=" + mSelectX 6342 + " mSelectY=" + mSelectY 6343 + " mScrollX=" + mScrollX 6344 + " mScrollY=" + mScrollY 6345 + " xRate=" + xRate 6346 + " yRate=" + yRate 6347 ); 6348 } 6349 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6350 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6351 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6352 : 0; 6353 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6354 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6355 : 0; 6356 pinScrollBy(scrollX, scrollY, true, 0); 6357 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6358 requestRectangleOnScreen(select); 6359 invalidate(); 6360 } 6361 6362 private int scaleTrackballX(float xRate, int width) { 6363 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6364 int nextXMove = xMove; 6365 if (xMove > 0) { 6366 if (xMove > mTrackballXMove) { 6367 xMove -= mTrackballXMove; 6368 } 6369 } else if (xMove < mTrackballXMove) { 6370 xMove -= mTrackballXMove; 6371 } 6372 mTrackballXMove = nextXMove; 6373 return xMove; 6374 } 6375 6376 private int scaleTrackballY(float yRate, int height) { 6377 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6378 int nextYMove = yMove; 6379 if (yMove > 0) { 6380 if (yMove > mTrackballYMove) { 6381 yMove -= mTrackballYMove; 6382 } 6383 } else if (yMove < mTrackballYMove) { 6384 yMove -= mTrackballYMove; 6385 } 6386 mTrackballYMove = nextYMove; 6387 return yMove; 6388 } 6389 6390 private int keyCodeToSoundsEffect(int keyCode) { 6391 switch(keyCode) { 6392 case KeyEvent.KEYCODE_DPAD_UP: 6393 return SoundEffectConstants.NAVIGATION_UP; 6394 case KeyEvent.KEYCODE_DPAD_RIGHT: 6395 return SoundEffectConstants.NAVIGATION_RIGHT; 6396 case KeyEvent.KEYCODE_DPAD_DOWN: 6397 return SoundEffectConstants.NAVIGATION_DOWN; 6398 case KeyEvent.KEYCODE_DPAD_LEFT: 6399 return SoundEffectConstants.NAVIGATION_LEFT; 6400 } 6401 throw new IllegalArgumentException("keyCode must be one of " + 6402 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6403 "KEYCODE_DPAD_LEFT}."); 6404 } 6405 6406 private void doTrackball(long time, int metaState) { 6407 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6408 if (elapsed == 0) { 6409 elapsed = TRACKBALL_TIMEOUT; 6410 } 6411 float xRate = mTrackballRemainsX * 1000 / elapsed; 6412 float yRate = mTrackballRemainsY * 1000 / elapsed; 6413 int viewWidth = getViewWidth(); 6414 int viewHeight = getViewHeight(); 6415 if (mSelectingText) { 6416 if (!mDrawSelectionPointer) { 6417 // The last selection was made by touch, disabling drawing the 6418 // selection pointer. Allow the trackball to adjust the 6419 // position of the touch control. 6420 mSelectX = contentToViewX(nativeSelectionX()); 6421 mSelectY = contentToViewY(nativeSelectionY()); 6422 mDrawSelectionPointer = mExtendSelection = true; 6423 nativeSetExtendSelection(); 6424 } 6425 moveSelection(scaleTrackballX(xRate, viewWidth), 6426 scaleTrackballY(yRate, viewHeight)); 6427 mTrackballRemainsX = mTrackballRemainsY = 0; 6428 return; 6429 } 6430 float ax = Math.abs(xRate); 6431 float ay = Math.abs(yRate); 6432 float maxA = Math.max(ax, ay); 6433 if (DebugFlags.WEB_VIEW) { 6434 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6435 + " xRate=" + xRate 6436 + " yRate=" + yRate 6437 + " mTrackballRemainsX=" + mTrackballRemainsX 6438 + " mTrackballRemainsY=" + mTrackballRemainsY); 6439 } 6440 int width = mContentWidth - viewWidth; 6441 int height = mContentHeight - viewHeight; 6442 if (width < 0) width = 0; 6443 if (height < 0) height = 0; 6444 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6445 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6446 maxA = Math.max(ax, ay); 6447 int count = Math.max(0, (int) maxA); 6448 int oldScrollX = mScrollX; 6449 int oldScrollY = mScrollY; 6450 if (count > 0) { 6451 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6452 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6453 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6454 KeyEvent.KEYCODE_DPAD_RIGHT; 6455 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6456 if (DebugFlags.WEB_VIEW) { 6457 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6458 + " count=" + count 6459 + " mTrackballRemainsX=" + mTrackballRemainsX 6460 + " mTrackballRemainsY=" + mTrackballRemainsY); 6461 } 6462 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6463 for (int i = 0; i < count; i++) { 6464 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6465 } 6466 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6467 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6468 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6469 } 6470 mTrackballRemainsX = mTrackballRemainsY = 0; 6471 } 6472 if (count >= TRACKBALL_SCROLL_COUNT) { 6473 int xMove = scaleTrackballX(xRate, width); 6474 int yMove = scaleTrackballY(yRate, height); 6475 if (DebugFlags.WEB_VIEW) { 6476 Log.v(LOGTAG, "doTrackball pinScrollBy" 6477 + " count=" + count 6478 + " xMove=" + xMove + " yMove=" + yMove 6479 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6480 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6481 ); 6482 } 6483 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6484 xMove = 0; 6485 } 6486 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6487 yMove = 0; 6488 } 6489 if (xMove != 0 || yMove != 0) { 6490 pinScrollBy(xMove, yMove, true, 0); 6491 } 6492 } 6493 } 6494 6495 /** 6496 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6497 * @return Maximum horizontal scroll position within real content 6498 */ 6499 int computeMaxScrollX() { 6500 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6501 } 6502 6503 /** 6504 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6505 * @return Maximum vertical scroll position within real content 6506 */ 6507 int computeMaxScrollY() { 6508 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6509 - getViewHeightWithTitle(), 0); 6510 } 6511 6512 boolean updateScrollCoordinates(int x, int y) { 6513 int oldX = mScrollX; 6514 int oldY = mScrollY; 6515 mScrollX = x; 6516 mScrollY = y; 6517 if (oldX != mScrollX || oldY != mScrollY) { 6518 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6519 return true; 6520 } else { 6521 return false; 6522 } 6523 } 6524 6525 public void flingScroll(int vx, int vy) { 6526 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6527 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6528 invalidate(); 6529 } 6530 6531 private void doFling() { 6532 if (mVelocityTracker == null) { 6533 return; 6534 } 6535 int maxX = computeMaxScrollX(); 6536 int maxY = computeMaxScrollY(); 6537 6538 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6539 int vx = (int) mVelocityTracker.getXVelocity(); 6540 int vy = (int) mVelocityTracker.getYVelocity(); 6541 6542 int scrollX = mScrollX; 6543 int scrollY = mScrollY; 6544 int overscrollDistance = mOverscrollDistance; 6545 int overflingDistance = mOverflingDistance; 6546 6547 // Use the layer's scroll data if applicable. 6548 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6549 scrollX = mScrollingLayerRect.left; 6550 scrollY = mScrollingLayerRect.top; 6551 maxX = mScrollingLayerRect.right; 6552 maxY = mScrollingLayerRect.bottom; 6553 // No overscrolling for layers. 6554 overscrollDistance = overflingDistance = 0; 6555 } 6556 6557 if (mSnapScrollMode != SNAP_NONE) { 6558 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6559 vy = 0; 6560 } else { 6561 vx = 0; 6562 } 6563 } 6564 if (true /* EMG release: make our fling more like Maps' */) { 6565 // maps cuts their velocity in half 6566 vx = vx * 3 / 4; 6567 vy = vy * 3 / 4; 6568 } 6569 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6570 WebViewCore.resumePriority(); 6571 if (!mSelectingText) { 6572 WebViewCore.resumeUpdatePicture(mWebViewCore); 6573 } 6574 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6575 invalidate(); 6576 } 6577 return; 6578 } 6579 float currentVelocity = mScroller.getCurrVelocity(); 6580 float velocity = (float) Math.hypot(vx, vy); 6581 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6582 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6583 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6584 - Math.atan2(vy, vx))); 6585 final float circle = (float) (Math.PI) * 2.0f; 6586 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6587 vx += currentVelocity * mLastVelX / mLastVelocity; 6588 vy += currentVelocity * mLastVelY / mLastVelocity; 6589 velocity = (float) Math.hypot(vx, vy); 6590 if (DebugFlags.WEB_VIEW) { 6591 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6592 } 6593 } else if (DebugFlags.WEB_VIEW) { 6594 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6595 } 6596 } else if (DebugFlags.WEB_VIEW) { 6597 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6598 + " current=" + currentVelocity 6599 + " vx=" + vx + " vy=" + vy 6600 + " maxX=" + maxX + " maxY=" + maxY 6601 + " scrollX=" + scrollX + " scrollY=" + scrollY 6602 + " layer=" + mScrollingLayer); 6603 } 6604 6605 // Allow sloppy flings without overscrolling at the edges. 6606 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6607 vx = 0; 6608 } 6609 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6610 vy = 0; 6611 } 6612 6613 if (overscrollDistance < overflingDistance) { 6614 if ((vx > 0 && scrollX == -overscrollDistance) || 6615 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6616 vx = 0; 6617 } 6618 if ((vy > 0 && scrollY == -overscrollDistance) || 6619 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6620 vy = 0; 6621 } 6622 } 6623 6624 mLastVelX = vx; 6625 mLastVelY = vy; 6626 mLastVelocity = velocity; 6627 6628 // no horizontal overscroll if the content just fits 6629 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6630 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6631 // Duration is calculated based on velocity. With range boundaries and overscroll 6632 // we may not know how long the final animation will take. (Hence the deprecation 6633 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6634 // resumes during this effect we will take a performance hit. See computeScroll; 6635 // we resume webcore there when the animation is finished. 6636 final int time = mScroller.getDuration(); 6637 6638 // Suppress scrollbars for layer scrolling. 6639 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6640 awakenScrollBars(time); 6641 } 6642 6643 invalidate(); 6644 } 6645 6646 /** 6647 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6648 * in charge of installing this view to the view hierarchy. This view will 6649 * become visible when the user starts scrolling via touch and fade away if 6650 * the user does not interact with it. 6651 * <p/> 6652 * API version 3 introduces a built-in zoom mechanism that is shown 6653 * automatically by the MapView. This is the preferred approach for 6654 * showing the zoom UI. 6655 * 6656 * @deprecated The built-in zoom mechanism is preferred, see 6657 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6658 */ 6659 @Deprecated 6660 public View getZoomControls() { 6661 if (!getSettings().supportZoom()) { 6662 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6663 return null; 6664 } 6665 return mZoomManager.getExternalZoomPicker(); 6666 } 6667 6668 void dismissZoomControl() { 6669 mZoomManager.dismissZoomPicker(); 6670 } 6671 6672 float getDefaultZoomScale() { 6673 return mZoomManager.getDefaultScale(); 6674 } 6675 6676 /** 6677 * @return TRUE if the WebView can be zoomed in. 6678 */ 6679 public boolean canZoomIn() { 6680 return mZoomManager.canZoomIn(); 6681 } 6682 6683 /** 6684 * @return TRUE if the WebView can be zoomed out. 6685 */ 6686 public boolean canZoomOut() { 6687 return mZoomManager.canZoomOut(); 6688 } 6689 6690 /** 6691 * Perform zoom in in the webview 6692 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6693 */ 6694 public boolean zoomIn() { 6695 return mZoomManager.zoomIn(); 6696 } 6697 6698 /** 6699 * Perform zoom out in the webview 6700 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6701 */ 6702 public boolean zoomOut() { 6703 return mZoomManager.zoomOut(); 6704 } 6705 6706 private void updateSelection() { 6707 if (mNativeClass == 0) { 6708 return; 6709 } 6710 // mLastTouchX and mLastTouchY are the point in the current viewport 6711 int contentX = viewToContentX(mLastTouchX + mScrollX); 6712 int contentY = viewToContentY(mLastTouchY + mScrollY); 6713 int slop = viewToContentDimension(mNavSlop); 6714 Rect rect = new Rect(contentX - slop, contentY - slop, 6715 contentX + slop, contentY + slop); 6716 nativeSelectBestAt(rect); 6717 mInitialHitTestResult = hitTestResult(null); 6718 } 6719 6720 /** 6721 * Scroll the focused text field to match the WebTextView 6722 * @param xPercent New x position of the WebTextView from 0 to 1. 6723 */ 6724 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6725 if (!inEditingMode() || mWebViewCore == null) { 6726 return; 6727 } 6728 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6729 new Float(xPercent)); 6730 } 6731 6732 /** 6733 * Scroll the focused textarea vertically to match the WebTextView 6734 * @param y New y position of the WebTextView in view coordinates 6735 */ 6736 /* package */ void scrollFocusedTextInputY(int y) { 6737 if (!inEditingMode() || mWebViewCore == null) { 6738 return; 6739 } 6740 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6741 } 6742 6743 /** 6744 * Set our starting point and time for a drag from the WebTextView. 6745 */ 6746 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6747 if (!inEditingMode()) { 6748 return; 6749 } 6750 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6751 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6752 mLastTouchTime = eventTime; 6753 if (!mScroller.isFinished()) { 6754 abortAnimation(); 6755 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6756 } 6757 mSnapScrollMode = SNAP_NONE; 6758 mVelocityTracker = VelocityTracker.obtain(); 6759 mTouchMode = TOUCH_DRAG_START_MODE; 6760 } 6761 6762 /** 6763 * Given a motion event from the WebTextView, set its location to our 6764 * coordinates, and handle the event. 6765 */ 6766 /*package*/ boolean textFieldDrag(MotionEvent event) { 6767 if (!inEditingMode()) { 6768 return false; 6769 } 6770 mDragFromTextInput = true; 6771 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6772 (float) (mWebTextView.getTop() - mScrollY)); 6773 boolean result = onTouchEvent(event); 6774 mDragFromTextInput = false; 6775 return result; 6776 } 6777 6778 /** 6779 * Due a touch up from a WebTextView. This will be handled by webkit to 6780 * change the selection. 6781 * @param event MotionEvent in the WebTextView's coordinates. 6782 */ 6783 /*package*/ void touchUpOnTextField(MotionEvent event) { 6784 if (!inEditingMode()) { 6785 return; 6786 } 6787 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6788 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6789 int slop = viewToContentDimension(mNavSlop); 6790 nativeMotionUp(x, y, slop); 6791 } 6792 6793 /** 6794 * Called when pressing the center key or trackball on a textfield. 6795 */ 6796 /*package*/ void centerKeyPressOnTextField() { 6797 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6798 nativeCursorNodePointer()); 6799 } 6800 6801 private void doShortPress() { 6802 if (mNativeClass == 0) { 6803 return; 6804 } 6805 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6806 return; 6807 } 6808 mTouchMode = TOUCH_DONE_MODE; 6809 switchOutDrawHistory(); 6810 // mLastTouchX and mLastTouchY are the point in the current viewport 6811 int contentX = viewToContentX(mLastTouchX + mScrollX); 6812 int contentY = viewToContentY(mLastTouchY + mScrollY); 6813 int slop = viewToContentDimension(mNavSlop); 6814 if (getSettings().supportTouchOnly()) { 6815 removeTouchHighlight(false); 6816 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6817 // use "0" as generation id to inform WebKit to use the same x/y as 6818 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6819 touchUpData.mMoveGeneration = 0; 6820 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6821 } else if (nativePointInNavCache(contentX, contentY, slop)) { 6822 WebViewCore.MotionUpData motionUpData = new WebViewCore 6823 .MotionUpData(); 6824 motionUpData.mFrame = nativeCacheHitFramePointer(); 6825 motionUpData.mNode = nativeCacheHitNodePointer(); 6826 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6827 motionUpData.mX = contentX; 6828 motionUpData.mY = contentY; 6829 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6830 motionUpData); 6831 } else { 6832 doMotionUp(contentX, contentY); 6833 } 6834 } 6835 6836 private void doMotionUp(int contentX, int contentY) { 6837 int slop = viewToContentDimension(mNavSlop); 6838 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 6839 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6840 } 6841 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6842 playSoundEffect(SoundEffectConstants.CLICK); 6843 } 6844 } 6845 6846 /** 6847 * Returns plugin bounds if x/y in content coordinates corresponds to a 6848 * plugin. Otherwise a NULL rectangle is returned. 6849 */ 6850 Rect getPluginBounds(int x, int y) { 6851 int slop = viewToContentDimension(mNavSlop); 6852 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 6853 return nativeCacheHitNodeBounds(); 6854 } else { 6855 return null; 6856 } 6857 } 6858 6859 /* 6860 * Return true if the rect (e.g. plugin) is fully visible and maximized 6861 * inside the WebView. 6862 */ 6863 boolean isRectFitOnScreen(Rect rect) { 6864 final int rectWidth = rect.width(); 6865 final int rectHeight = rect.height(); 6866 final int viewWidth = getViewWidth(); 6867 final int viewHeight = getViewHeightWithTitle(); 6868 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6869 scale = mZoomManager.computeScaleWithLimits(scale); 6870 return !mZoomManager.willScaleTriggerZoom(scale) 6871 && contentToViewX(rect.left) >= mScrollX 6872 && contentToViewX(rect.right) <= mScrollX + viewWidth 6873 && contentToViewY(rect.top) >= mScrollY 6874 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6875 } 6876 6877 /* 6878 * Maximize and center the rectangle, specified in the document coordinate 6879 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6880 * animated scroll to center it. If the zoom needs to be changed, find the 6881 * zoom center and do a smooth zoom transition. The rect is in document 6882 * coordinates 6883 */ 6884 void centerFitRect(Rect rect) { 6885 final int rectWidth = rect.width(); 6886 final int rectHeight = rect.height(); 6887 final int viewWidth = getViewWidth(); 6888 final int viewHeight = getViewHeightWithTitle(); 6889 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6890 / rectHeight); 6891 scale = mZoomManager.computeScaleWithLimits(scale); 6892 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6893 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6894 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6895 true, 0); 6896 } else { 6897 float actualScale = mZoomManager.getScale(); 6898 float oldScreenX = rect.left * actualScale - mScrollX; 6899 float rectViewX = rect.left * scale; 6900 float rectViewWidth = rectWidth * scale; 6901 float newMaxWidth = mContentWidth * scale; 6902 float newScreenX = (viewWidth - rectViewWidth) / 2; 6903 // pin the newX to the WebView 6904 if (newScreenX > rectViewX) { 6905 newScreenX = rectViewX; 6906 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6907 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6908 } 6909 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6910 / (scale - actualScale); 6911 float oldScreenY = rect.top * actualScale + getTitleHeight() 6912 - mScrollY; 6913 float rectViewY = rect.top * scale + getTitleHeight(); 6914 float rectViewHeight = rectHeight * scale; 6915 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6916 float newScreenY = (viewHeight - rectViewHeight) / 2; 6917 // pin the newY to the WebView 6918 if (newScreenY > rectViewY) { 6919 newScreenY = rectViewY; 6920 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6921 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6922 } 6923 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6924 / (scale - actualScale); 6925 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6926 mZoomManager.startZoomAnimation(scale, false); 6927 } 6928 } 6929 6930 // Called by JNI to handle a touch on a node representing an email address, 6931 // address, or phone number 6932 private void overrideLoading(String url) { 6933 mCallbackProxy.uiOverrideUrlLoading(url); 6934 } 6935 6936 @Override 6937 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6938 // FIXME: If a subwindow is showing find, and the user touches the 6939 // background window, it can steal focus. 6940 if (mFindIsUp) return false; 6941 boolean result = false; 6942 if (inEditingMode()) { 6943 result = mWebTextView.requestFocus(direction, 6944 previouslyFocusedRect); 6945 } else { 6946 result = super.requestFocus(direction, previouslyFocusedRect); 6947 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6948 // For cases such as GMail, where we gain focus from a direction, 6949 // we want to move to the first available link. 6950 // FIXME: If there are no visible links, we may not want to 6951 int fakeKeyDirection = 0; 6952 switch(direction) { 6953 case View.FOCUS_UP: 6954 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6955 break; 6956 case View.FOCUS_DOWN: 6957 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6958 break; 6959 case View.FOCUS_LEFT: 6960 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6961 break; 6962 case View.FOCUS_RIGHT: 6963 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6964 break; 6965 default: 6966 return result; 6967 } 6968 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6969 navHandledKey(fakeKeyDirection, 1, true, 0); 6970 } 6971 } 6972 } 6973 return result; 6974 } 6975 6976 @Override 6977 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6978 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6979 6980 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6981 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6982 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6983 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6984 6985 int measuredHeight = heightSize; 6986 int measuredWidth = widthSize; 6987 6988 // Grab the content size from WebViewCore. 6989 int contentHeight = contentToViewDimension(mContentHeight); 6990 int contentWidth = contentToViewDimension(mContentWidth); 6991 6992// Log.d(LOGTAG, "------- measure " + heightMode); 6993 6994 if (heightMode != MeasureSpec.EXACTLY) { 6995 mHeightCanMeasure = true; 6996 measuredHeight = contentHeight; 6997 if (heightMode == MeasureSpec.AT_MOST) { 6998 // If we are larger than the AT_MOST height, then our height can 6999 // no longer be measured and we should scroll internally. 7000 if (measuredHeight > heightSize) { 7001 measuredHeight = heightSize; 7002 mHeightCanMeasure = false; 7003 } else if (measuredHeight < heightSize) { 7004 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7005 } 7006 } 7007 } else { 7008 mHeightCanMeasure = false; 7009 } 7010 if (mNativeClass != 0) { 7011 nativeSetHeightCanMeasure(mHeightCanMeasure); 7012 } 7013 // For the width, always use the given size unless unspecified. 7014 if (widthMode == MeasureSpec.UNSPECIFIED) { 7015 mWidthCanMeasure = true; 7016 measuredWidth = contentWidth; 7017 } else { 7018 if (measuredWidth < contentWidth) { 7019 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7020 } 7021 mWidthCanMeasure = false; 7022 } 7023 7024 synchronized (this) { 7025 setMeasuredDimension(measuredWidth, measuredHeight); 7026 } 7027 } 7028 7029 @Override 7030 public boolean requestChildRectangleOnScreen(View child, 7031 Rect rect, 7032 boolean immediate) { 7033 if (mNativeClass == 0) { 7034 return false; 7035 } 7036 // don't scroll while in zoom animation. When it is done, we will adjust 7037 // the necessary components (e.g., WebTextView if it is in editing mode) 7038 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7039 return false; 7040 } 7041 7042 rect.offset(child.getLeft() - child.getScrollX(), 7043 child.getTop() - child.getScrollY()); 7044 7045 Rect content = new Rect(viewToContentX(mScrollX), 7046 viewToContentY(mScrollY), 7047 viewToContentX(mScrollX + getWidth() 7048 - getVerticalScrollbarWidth()), 7049 viewToContentY(mScrollY + getViewHeightWithTitle())); 7050 content = nativeSubtractLayers(content); 7051 int screenTop = contentToViewY(content.top); 7052 int screenBottom = contentToViewY(content.bottom); 7053 int height = screenBottom - screenTop; 7054 int scrollYDelta = 0; 7055 7056 if (rect.bottom > screenBottom) { 7057 int oneThirdOfScreenHeight = height / 3; 7058 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7059 // If the rectangle is too tall to fit in the bottom two thirds 7060 // of the screen, place it at the top. 7061 scrollYDelta = rect.top - screenTop; 7062 } else { 7063 // If the rectangle will still fit on screen, we want its 7064 // top to be in the top third of the screen. 7065 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7066 } 7067 } else if (rect.top < screenTop) { 7068 scrollYDelta = rect.top - screenTop; 7069 } 7070 7071 int screenLeft = contentToViewX(content.left); 7072 int screenRight = contentToViewX(content.right); 7073 int width = screenRight - screenLeft; 7074 int scrollXDelta = 0; 7075 7076 if (rect.right > screenRight && rect.left > screenLeft) { 7077 if (rect.width() > width) { 7078 scrollXDelta += (rect.left - screenLeft); 7079 } else { 7080 scrollXDelta += (rect.right - screenRight); 7081 } 7082 } else if (rect.left < screenLeft) { 7083 scrollXDelta -= (screenLeft - rect.left); 7084 } 7085 7086 if ((scrollYDelta | scrollXDelta) != 0) { 7087 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7088 } 7089 7090 return false; 7091 } 7092 7093 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7094 String replace, int newStart, int newEnd) { 7095 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7096 arg.mReplace = replace; 7097 arg.mNewStart = newStart; 7098 arg.mNewEnd = newEnd; 7099 mTextGeneration++; 7100 arg.mTextGeneration = mTextGeneration; 7101 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7102 } 7103 7104 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7105 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7106 arg.mEvent = event; 7107 arg.mCurrentText = currentText; 7108 // Increase our text generation number, and pass it to webcore thread 7109 mTextGeneration++; 7110 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7111 // WebKit's document state is not saved until about to leave the page. 7112 // To make sure the host application, like Browser, has the up to date 7113 // document state when it goes to background, we force to save the 7114 // document state. 7115 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7116 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7117 cursorData(), 1000); 7118 } 7119 7120 /* package */ synchronized WebViewCore getWebViewCore() { 7121 return mWebViewCore; 7122 } 7123 7124 //------------------------------------------------------------------------- 7125 // Methods can be called from a separate thread, like WebViewCore 7126 // If it needs to call the View system, it has to send message. 7127 //------------------------------------------------------------------------- 7128 7129 /** 7130 * General handler to receive message coming from webkit thread 7131 */ 7132 class PrivateHandler extends Handler { 7133 @Override 7134 public void handleMessage(Message msg) { 7135 // exclude INVAL_RECT_MSG_ID since it is frequently output 7136 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7137 if (msg.what >= FIRST_PRIVATE_MSG_ID 7138 && msg.what <= LAST_PRIVATE_MSG_ID) { 7139 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7140 - FIRST_PRIVATE_MSG_ID]); 7141 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7142 && msg.what <= LAST_PACKAGE_MSG_ID) { 7143 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7144 - FIRST_PACKAGE_MSG_ID]); 7145 } else { 7146 Log.v(LOGTAG, Integer.toString(msg.what)); 7147 } 7148 } 7149 if (mWebViewCore == null) { 7150 // after WebView's destroy() is called, skip handling messages. 7151 return; 7152 } 7153 switch (msg.what) { 7154 case REMEMBER_PASSWORD: { 7155 mDatabase.setUsernamePassword( 7156 msg.getData().getString("host"), 7157 msg.getData().getString("username"), 7158 msg.getData().getString("password")); 7159 ((Message) msg.obj).sendToTarget(); 7160 break; 7161 } 7162 case NEVER_REMEMBER_PASSWORD: { 7163 mDatabase.setUsernamePassword( 7164 msg.getData().getString("host"), null, null); 7165 ((Message) msg.obj).sendToTarget(); 7166 break; 7167 } 7168 case PREVENT_DEFAULT_TIMEOUT: { 7169 // if timeout happens, cancel it so that it won't block UI 7170 // to continue handling touch events 7171 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7172 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7173 || (msg.arg1 == MotionEvent.ACTION_MOVE 7174 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7175 cancelWebCoreTouchEvent( 7176 viewToContentX(mLastTouchX + mScrollX), 7177 viewToContentY(mLastTouchY + mScrollY), 7178 true); 7179 } 7180 break; 7181 } 7182 case SCROLL_SELECT_TEXT: { 7183 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7184 mSentAutoScrollMessage = false; 7185 break; 7186 } 7187 if (mScrollingLayer == 0) { 7188 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7189 } else { 7190 mScrollingLayerRect.left += mAutoScrollX; 7191 mScrollingLayerRect.top += mAutoScrollY; 7192 nativeScrollLayer(mScrollingLayer, 7193 mScrollingLayerRect.left, 7194 mScrollingLayerRect.top); 7195 invalidate(); 7196 } 7197 sendEmptyMessageDelayed( 7198 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7199 break; 7200 } 7201 case SWITCH_TO_SHORTPRESS: { 7202 mInitialHitTestResult = null; // set by updateSelection() 7203 if (mTouchMode == TOUCH_INIT_MODE) { 7204 if (!getSettings().supportTouchOnly() 7205 && mPreventDefault != PREVENT_DEFAULT_YES) { 7206 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7207 updateSelection(); 7208 } else { 7209 // set to TOUCH_SHORTPRESS_MODE so that it won't 7210 // trigger double tap any more 7211 mTouchMode = TOUCH_SHORTPRESS_MODE; 7212 } 7213 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7214 mTouchMode = TOUCH_DONE_MODE; 7215 } 7216 break; 7217 } 7218 case SWITCH_TO_LONGPRESS: { 7219 if (getSettings().supportTouchOnly()) { 7220 removeTouchHighlight(false); 7221 } 7222 if (inFullScreenMode() || mDeferTouchProcess) { 7223 TouchEventData ted = new TouchEventData(); 7224 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7225 ted.mIds = new int[1]; 7226 ted.mIds[0] = 0; 7227 ted.mPoints = new Point[1]; 7228 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7229 viewToContentY(mLastTouchY + mScrollY)); 7230 // metaState for long press is tricky. Should it be the 7231 // state when the press started or when the press was 7232 // released? Or some intermediary key state? For 7233 // simplicity for now, we don't set it. 7234 ted.mMetaState = 0; 7235 ted.mReprocess = mDeferTouchProcess; 7236 ted.mNativeLayer = nativeScrollableLayer( 7237 ted.mPoints[0].x, ted.mPoints[0].y, 7238 ted.mNativeLayerRect, null); 7239 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7240 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7241 mTouchMode = TOUCH_DONE_MODE; 7242 performLongClick(); 7243 } 7244 break; 7245 } 7246 case RELEASE_SINGLE_TAP: { 7247 doShortPress(); 7248 break; 7249 } 7250 case SCROLL_TO_MSG_ID: { 7251 // arg1 = animate, arg2 = onlyIfImeIsShowing 7252 // obj = Point(x, y) 7253 if (msg.arg2 == 1) { 7254 // This scroll is intended to bring the textfield into 7255 // view, but is only necessary if the IME is showing 7256 InputMethodManager imm = InputMethodManager.peekInstance(); 7257 if (imm == null || !imm.isAcceptingText() 7258 || (!imm.isActive(WebView.this) && (!inEditingMode() 7259 || !imm.isActive(mWebTextView)))) { 7260 break; 7261 } 7262 } 7263 final Point p = (Point) msg.obj; 7264 if (msg.arg1 == 1) { 7265 spawnContentScrollTo(p.x, p.y); 7266 } else { 7267 setContentScrollTo(p.x, p.y); 7268 } 7269 break; 7270 } 7271 case UPDATE_ZOOM_RANGE: { 7272 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7273 // mScrollX contains the new minPrefWidth 7274 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7275 break; 7276 } 7277 case REPLACE_BASE_CONTENT: { 7278 nativeReplaceBaseContent(msg.arg1); 7279 break; 7280 } 7281 case NEW_PICTURE_MSG_ID: { 7282 // called for new content 7283 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7284 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion.getBounds(), 7285 getSettings().getShowVisualIndicator()); 7286 final Point viewSize = draw.mViewSize; 7287 WebViewCore.ViewState viewState = draw.mViewState; 7288 boolean isPictureAfterFirstLayout = viewState != null; 7289 if (isPictureAfterFirstLayout) { 7290 // Reset the last sent data here since dealing with new page. 7291 mLastWidthSent = 0; 7292 mZoomManager.onFirstLayout(draw); 7293 if (!mDrawHistory) { 7294 // Do not send the scroll event for this particular 7295 // scroll message. Note that a scroll event may 7296 // still be fired if the user scrolls before the 7297 // message can be handled. 7298 mSendScrollEvent = false; 7299 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7300 mSendScrollEvent = true; 7301 7302 // As we are on a new page, remove the WebTextView. This 7303 // is necessary for page loads driven by webkit, and in 7304 // particular when the user was on a password field, so 7305 // the WebTextView was visible. 7306 clearTextEntry(); 7307 } 7308 } 7309 7310 // We update the layout (i.e. request a layout from the 7311 // view system) if the last view size that we sent to 7312 // WebCore matches the view size of the picture we just 7313 // received in the fixed dimension. 7314 final boolean updateLayout = viewSize.x == mLastWidthSent 7315 && viewSize.y == mLastHeightSent; 7316 // Don't send scroll event for picture coming from webkit, 7317 // since the new picture may cause a scroll event to override 7318 // the saved history scroll position. 7319 mSendScrollEvent = false; 7320 recordNewContentSize(draw.mContentSize.x, 7321 draw.mContentSize.y, updateLayout); 7322 mSendScrollEvent = true; 7323 if (DebugFlags.WEB_VIEW) { 7324 Rect b = draw.mInvalRegion.getBounds(); 7325 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7326 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7327 } 7328 invalidateContentRect(draw.mInvalRegion.getBounds()); 7329 7330 if (mPictureListener != null) { 7331 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7332 } 7333 7334 // update the zoom information based on the new picture 7335 mZoomManager.onNewPicture(draw); 7336 7337 if (draw.mFocusSizeChanged && inEditingMode()) { 7338 mFocusSizeChanged = true; 7339 } 7340 if (isPictureAfterFirstLayout) { 7341 mViewManager.postReadyToDrawAll(); 7342 } 7343 break; 7344 } 7345 case WEBCORE_INITIALIZED_MSG_ID: 7346 // nativeCreate sets mNativeClass to a non-zero value 7347 nativeCreate(msg.arg1); 7348 break; 7349 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7350 // Make sure that the textfield is currently focused 7351 // and representing the same node as the pointer. 7352 if (inEditingMode() && 7353 mWebTextView.isSameTextField(msg.arg1)) { 7354 if (msg.getData().getBoolean("password")) { 7355 Spannable text = (Spannable) mWebTextView.getText(); 7356 int start = Selection.getSelectionStart(text); 7357 int end = Selection.getSelectionEnd(text); 7358 mWebTextView.setInPassword(true); 7359 // Restore the selection, which may have been 7360 // ruined by setInPassword. 7361 Spannable pword = 7362 (Spannable) mWebTextView.getText(); 7363 Selection.setSelection(pword, start, end); 7364 // If the text entry has created more events, ignore 7365 // this one. 7366 } else if (msg.arg2 == mTextGeneration) { 7367 String text = (String) msg.obj; 7368 if (null == text) { 7369 text = ""; 7370 } 7371 mWebTextView.setTextAndKeepSelection(text); 7372 } 7373 } 7374 break; 7375 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7376 displaySoftKeyboard(true); 7377 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7378 case UPDATE_TEXT_SELECTION_MSG_ID: 7379 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7380 (WebViewCore.TextSelectionData) msg.obj); 7381 break; 7382 case FORM_DID_BLUR: 7383 if (inEditingMode() 7384 && mWebTextView.isSameTextField(msg.arg1)) { 7385 hideSoftKeyboard(); 7386 } 7387 break; 7388 case RETURN_LABEL: 7389 if (inEditingMode() 7390 && mWebTextView.isSameTextField(msg.arg1)) { 7391 mWebTextView.setHint((String) msg.obj); 7392 InputMethodManager imm 7393 = InputMethodManager.peekInstance(); 7394 // The hint is propagated to the IME in 7395 // onCreateInputConnection. If the IME is already 7396 // active, restart it so that its hint text is updated. 7397 if (imm != null && imm.isActive(mWebTextView)) { 7398 imm.restartInput(mWebTextView); 7399 } 7400 } 7401 break; 7402 case UNHANDLED_NAV_KEY: 7403 navHandledKey(msg.arg1, 1, false, 0); 7404 break; 7405 case UPDATE_TEXT_ENTRY_MSG_ID: 7406 // this is sent after finishing resize in WebViewCore. Make 7407 // sure the text edit box is still on the screen. 7408 if (inEditingMode() && nativeCursorIsTextInput()) { 7409 rebuildWebTextView(); 7410 } 7411 break; 7412 case CLEAR_TEXT_ENTRY: 7413 clearTextEntry(); 7414 break; 7415 case INVAL_RECT_MSG_ID: { 7416 Rect r = (Rect)msg.obj; 7417 if (r == null) { 7418 invalidate(); 7419 } else { 7420 // we need to scale r from content into view coords, 7421 // which viewInvalidate() does for us 7422 viewInvalidate(r.left, r.top, r.right, r.bottom); 7423 } 7424 break; 7425 } 7426 case REQUEST_FORM_DATA: 7427 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7428 if (mWebTextView.isSameTextField(msg.arg1)) { 7429 mWebTextView.setAdapterCustom(adapter); 7430 } 7431 break; 7432 case RESUME_WEBCORE_PRIORITY: 7433 WebViewCore.resumePriority(); 7434 WebViewCore.resumeUpdatePicture(mWebViewCore); 7435 break; 7436 7437 case LONG_PRESS_CENTER: 7438 // as this is shared by keydown and trackballdown, reset all 7439 // the states 7440 mGotCenterDown = false; 7441 mTrackballDown = false; 7442 performLongClick(); 7443 break; 7444 7445 case WEBCORE_NEED_TOUCH_EVENTS: 7446 mForwardTouchEvents = (msg.arg1 != 0); 7447 break; 7448 7449 case PREVENT_TOUCH_ID: 7450 if (inFullScreenMode()) { 7451 break; 7452 } 7453 if (msg.obj == null) { 7454 if (msg.arg1 == MotionEvent.ACTION_DOWN 7455 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7456 // if prevent default is called from WebCore, UI 7457 // will not handle the rest of the touch events any 7458 // more. 7459 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7460 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7461 } else if (msg.arg1 == MotionEvent.ACTION_MOVE 7462 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7463 // the return for the first ACTION_MOVE will decide 7464 // whether UI will handle touch or not. Currently no 7465 // support for alternating prevent default 7466 mPreventDefault = msg.arg2 == 1 ? PREVENT_DEFAULT_YES 7467 : PREVENT_DEFAULT_NO; 7468 } 7469 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7470 mTouchHighlightRegion.setEmpty(); 7471 } 7472 } else { 7473 TouchEventData ted = (TouchEventData) msg.obj; 7474 7475 if (ted.mPoints.length > 1) { // multi-touch 7476 if (ted.mAction == MotionEvent.ACTION_POINTER_UP) { 7477 mIsHandlingMultiTouch = false; 7478 } 7479 if (msg.arg2 == 0) { 7480 mPreventDefault = PREVENT_DEFAULT_NO; 7481 handleMultiTouchInWebView(ted.mMotionEvent); 7482 } else { 7483 mPreventDefault = PREVENT_DEFAULT_YES; 7484 } 7485 break; 7486 } 7487 7488 // prevent default is not called in WebCore, so the 7489 // message needs to be reprocessed in UI 7490 if (msg.arg2 == 0) { 7491 // Following is for single touch. 7492 switch (ted.mAction) { 7493 case MotionEvent.ACTION_DOWN: 7494 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7495 - mScrollX; 7496 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7497 - mScrollY; 7498 mDeferTouchMode = TOUCH_INIT_MODE; 7499 break; 7500 case MotionEvent.ACTION_MOVE: { 7501 // no snapping in defer process 7502 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7503 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7504 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7505 mDeferTouchMode = TOUCH_DRAG_MODE; 7506 mLastDeferTouchX = x; 7507 mLastDeferTouchY = y; 7508 startScrollingLayer(x, y); 7509 startDrag(); 7510 } 7511 int deltaX = pinLocX((int) (mScrollX 7512 + mLastDeferTouchX - x)) 7513 - mScrollX; 7514 int deltaY = pinLocY((int) (mScrollY 7515 + mLastDeferTouchY - y)) 7516 - mScrollY; 7517 doDrag(deltaX, deltaY); 7518 if (deltaX != 0) mLastDeferTouchX = x; 7519 if (deltaY != 0) mLastDeferTouchY = y; 7520 break; 7521 } 7522 case MotionEvent.ACTION_UP: 7523 case MotionEvent.ACTION_CANCEL: 7524 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7525 // no fling in defer process 7526 mScroller.springBack(mScrollX, mScrollY, 0, 7527 computeMaxScrollX(), 0, 7528 computeMaxScrollY()); 7529 invalidate(); 7530 WebViewCore.resumePriority(); 7531 WebViewCore.resumeUpdatePicture(mWebViewCore); 7532 } 7533 mDeferTouchMode = TOUCH_DONE_MODE; 7534 break; 7535 case WebViewCore.ACTION_DOUBLETAP: 7536 // doDoubleTap() needs mLastTouchX/Y as anchor 7537 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7538 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7539 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7540 mDeferTouchMode = TOUCH_DONE_MODE; 7541 break; 7542 case WebViewCore.ACTION_LONGPRESS: 7543 HitTestResult hitTest = getHitTestResult(); 7544 if (hitTest != null && hitTest.mType 7545 != HitTestResult.UNKNOWN_TYPE) { 7546 performLongClick(); 7547 } 7548 mDeferTouchMode = TOUCH_DONE_MODE; 7549 break; 7550 } 7551 } 7552 } 7553 break; 7554 7555 case REQUEST_KEYBOARD: 7556 if (msg.arg1 == 0) { 7557 hideSoftKeyboard(); 7558 } else { 7559 displaySoftKeyboard(false); 7560 } 7561 break; 7562 7563 case FIND_AGAIN: 7564 // Ignore if find has been dismissed. 7565 if (mFindIsUp && mFindCallback != null) { 7566 mFindCallback.findAll(); 7567 } 7568 break; 7569 7570 case DRAG_HELD_MOTIONLESS: 7571 mHeldMotionless = MOTIONLESS_TRUE; 7572 invalidate(); 7573 // fall through to keep scrollbars awake 7574 7575 case AWAKEN_SCROLL_BARS: 7576 if (mTouchMode == TOUCH_DRAG_MODE 7577 && mHeldMotionless == MOTIONLESS_TRUE) { 7578 awakenScrollBars(ViewConfiguration 7579 .getScrollDefaultDelay(), false); 7580 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7581 .obtainMessage(AWAKEN_SCROLL_BARS), 7582 ViewConfiguration.getScrollDefaultDelay()); 7583 } 7584 break; 7585 7586 case DO_MOTION_UP: 7587 doMotionUp(msg.arg1, msg.arg2); 7588 break; 7589 7590 case SCREEN_ON: 7591 setKeepScreenOn(msg.arg1 == 1); 7592 break; 7593 7594 case SHOW_FULLSCREEN: { 7595 View view = (View) msg.obj; 7596 int npp = msg.arg1; 7597 7598 if (inFullScreenMode()) { 7599 Log.w(LOGTAG, "Should not have another full screen."); 7600 dismissFullScreenMode(); 7601 } 7602 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7603 mFullScreenHolder.setContentView(view); 7604 mFullScreenHolder.setCancelable(false); 7605 mFullScreenHolder.setCanceledOnTouchOutside(false); 7606 mFullScreenHolder.show(); 7607 7608 break; 7609 } 7610 case HIDE_FULLSCREEN: 7611 dismissFullScreenMode(); 7612 break; 7613 7614 case DOM_FOCUS_CHANGED: 7615 if (inEditingMode()) { 7616 nativeClearCursor(); 7617 rebuildWebTextView(); 7618 } 7619 break; 7620 7621 case SHOW_RECT_MSG_ID: { 7622 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7623 int x = mScrollX; 7624 int left = contentToViewX(data.mLeft); 7625 int width = contentToViewDimension(data.mWidth); 7626 int maxWidth = contentToViewDimension(data.mContentWidth); 7627 int viewWidth = getViewWidth(); 7628 if (width < viewWidth) { 7629 // center align 7630 x += left + width / 2 - mScrollX - viewWidth / 2; 7631 } else { 7632 x += (int) (left + data.mXPercentInDoc * width 7633 - mScrollX - data.mXPercentInView * viewWidth); 7634 } 7635 if (DebugFlags.WEB_VIEW) { 7636 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7637 width + ",maxWidth=" + maxWidth + 7638 ",viewWidth=" + viewWidth + ",x=" 7639 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7640 ",xPercentInView=" + data.mXPercentInView+ ")"); 7641 } 7642 // use the passing content width to cap x as the current 7643 // mContentWidth may not be updated yet 7644 x = Math.max(0, 7645 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7646 int top = contentToViewY(data.mTop); 7647 int height = contentToViewDimension(data.mHeight); 7648 int maxHeight = contentToViewDimension(data.mContentHeight); 7649 int viewHeight = getViewHeight(); 7650 int y = (int) (top + data.mYPercentInDoc * height - 7651 data.mYPercentInView * viewHeight); 7652 if (DebugFlags.WEB_VIEW) { 7653 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7654 height + ",maxHeight=" + maxHeight + 7655 ",viewHeight=" + viewHeight + ",y=" 7656 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7657 ",yPercentInView=" + data.mYPercentInView+ ")"); 7658 } 7659 // use the passing content height to cap y as the current 7660 // mContentHeight may not be updated yet 7661 y = Math.max(0, 7662 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7663 // We need to take into account the visible title height 7664 // when scrolling since y is an absolute view position. 7665 y = Math.max(0, y - getVisibleTitleHeight()); 7666 scrollTo(x, y); 7667 } 7668 break; 7669 7670 case CENTER_FIT_RECT: 7671 centerFitRect((Rect)msg.obj); 7672 break; 7673 7674 case SET_SCROLLBAR_MODES: 7675 mHorizontalScrollBarMode = msg.arg1; 7676 mVerticalScrollBarMode = msg.arg2; 7677 break; 7678 7679 case SELECTION_STRING_CHANGED: 7680 if (mAccessibilityInjector != null) { 7681 String selectionString = (String) msg.obj; 7682 mAccessibilityInjector.onSelectionStringChange(selectionString); 7683 } 7684 break; 7685 7686 case SET_TOUCH_HIGHLIGHT_RECTS: 7687 invalidate(mTouchHighlightRegion.getBounds()); 7688 mTouchHighlightRegion.setEmpty(); 7689 if (msg.obj != null) { 7690 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7691 for (Rect rect : rects) { 7692 Rect viewRect = contentToViewRect(rect); 7693 // some sites, like stories in nytimes.com, set 7694 // mouse event handler in the top div. It is not 7695 // user friendly to highlight the div if it covers 7696 // more than half of the screen. 7697 if (viewRect.width() < getWidth() >> 1 7698 || viewRect.height() < getHeight() >> 1) { 7699 mTouchHighlightRegion.union(viewRect); 7700 invalidate(viewRect); 7701 } else { 7702 Log.w(LOGTAG, "Skip the huge selection rect:" 7703 + viewRect); 7704 } 7705 } 7706 } 7707 break; 7708 7709 case SAVE_WEBARCHIVE_FINISHED: 7710 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7711 if (saveMessage.mCallback != null) { 7712 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7713 } 7714 break; 7715 7716 case SET_AUTOFILLABLE: 7717 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7718 if (mWebTextView != null) { 7719 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7720 rebuildWebTextView(); 7721 } 7722 break; 7723 7724 case AUTOFILL_COMPLETE: 7725 if (mWebTextView != null) { 7726 // Clear the WebTextView adapter when AutoFill finishes 7727 // so that the drop down gets cleared. 7728 mWebTextView.setAdapterCustom(null); 7729 } 7730 break; 7731 7732 case SELECT_AT: 7733 nativeSelectAt(msg.arg1, msg.arg2); 7734 break; 7735 7736 default: 7737 super.handleMessage(msg); 7738 break; 7739 } 7740 } 7741 } 7742 7743 /** 7744 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 7745 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 7746 */ 7747 private void updateTextSelectionFromMessage(int nodePointer, 7748 int textGeneration, WebViewCore.TextSelectionData data) { 7749 if (inEditingMode() 7750 && mWebTextView.isSameTextField(nodePointer) 7751 && textGeneration == mTextGeneration) { 7752 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 7753 } 7754 } 7755 7756 // Class used to use a dropdown for a <select> element 7757 private class InvokeListBox implements Runnable { 7758 // Whether the listbox allows multiple selection. 7759 private boolean mMultiple; 7760 // Passed in to a list with multiple selection to tell 7761 // which items are selected. 7762 private int[] mSelectedArray; 7763 // Passed in to a list with single selection to tell 7764 // where the initial selection is. 7765 private int mSelection; 7766 7767 private Container[] mContainers; 7768 7769 // Need these to provide stable ids to my ArrayAdapter, 7770 // which normally does not have stable ids. (Bug 1250098) 7771 private class Container extends Object { 7772 /** 7773 * Possible values for mEnabled. Keep in sync with OptionStatus in 7774 * WebViewCore.cpp 7775 */ 7776 final static int OPTGROUP = -1; 7777 final static int OPTION_DISABLED = 0; 7778 final static int OPTION_ENABLED = 1; 7779 7780 String mString; 7781 int mEnabled; 7782 int mId; 7783 7784 @Override 7785 public String toString() { 7786 return mString; 7787 } 7788 } 7789 7790 /** 7791 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 7792 * and allow filtering. 7793 */ 7794 private class MyArrayListAdapter extends ArrayAdapter<Container> { 7795 public MyArrayListAdapter() { 7796 super(mContext, 7797 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 7798 com.android.internal.R.layout.webview_select_singlechoice, 7799 mContainers); 7800 } 7801 7802 @Override 7803 public View getView(int position, View convertView, 7804 ViewGroup parent) { 7805 // Always pass in null so that we will get a new CheckedTextView 7806 // Otherwise, an item which was previously used as an <optgroup> 7807 // element (i.e. has no check), could get used as an <option> 7808 // element, which needs a checkbox/radio, but it would not have 7809 // one. 7810 convertView = super.getView(position, null, parent); 7811 Container c = item(position); 7812 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 7813 // ListView does not draw dividers between disabled and 7814 // enabled elements. Use a LinearLayout to provide dividers 7815 LinearLayout layout = new LinearLayout(mContext); 7816 layout.setOrientation(LinearLayout.VERTICAL); 7817 if (position > 0) { 7818 View dividerTop = new View(mContext); 7819 dividerTop.setBackgroundResource( 7820 android.R.drawable.divider_horizontal_bright); 7821 layout.addView(dividerTop); 7822 } 7823 7824 if (Container.OPTGROUP == c.mEnabled) { 7825 // Currently select_dialog_multichoice uses CheckedTextViews. 7826 // If that changes, the class cast will no longer be valid. 7827 if (mMultiple) { 7828 Assert.assertTrue(convertView instanceof CheckedTextView); 7829 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 7830 } 7831 } else { 7832 // c.mEnabled == Container.OPTION_DISABLED 7833 // Draw the disabled element in a disabled state. 7834 convertView.setEnabled(false); 7835 } 7836 7837 layout.addView(convertView); 7838 if (position < getCount() - 1) { 7839 View dividerBottom = new View(mContext); 7840 dividerBottom.setBackgroundResource( 7841 android.R.drawable.divider_horizontal_bright); 7842 layout.addView(dividerBottom); 7843 } 7844 return layout; 7845 } 7846 return convertView; 7847 } 7848 7849 @Override 7850 public boolean hasStableIds() { 7851 // AdapterView's onChanged method uses this to determine whether 7852 // to restore the old state. Return false so that the old (out 7853 // of date) state does not replace the new, valid state. 7854 return false; 7855 } 7856 7857 private Container item(int position) { 7858 if (position < 0 || position >= getCount()) { 7859 return null; 7860 } 7861 return (Container) getItem(position); 7862 } 7863 7864 @Override 7865 public long getItemId(int position) { 7866 Container item = item(position); 7867 if (item == null) { 7868 return -1; 7869 } 7870 return item.mId; 7871 } 7872 7873 @Override 7874 public boolean areAllItemsEnabled() { 7875 return false; 7876 } 7877 7878 @Override 7879 public boolean isEnabled(int position) { 7880 Container item = item(position); 7881 if (item == null) { 7882 return false; 7883 } 7884 return Container.OPTION_ENABLED == item.mEnabled; 7885 } 7886 } 7887 7888 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 7889 mMultiple = true; 7890 mSelectedArray = selected; 7891 7892 int length = array.length; 7893 mContainers = new Container[length]; 7894 for (int i = 0; i < length; i++) { 7895 mContainers[i] = new Container(); 7896 mContainers[i].mString = array[i]; 7897 mContainers[i].mEnabled = enabled[i]; 7898 mContainers[i].mId = i; 7899 } 7900 } 7901 7902 private InvokeListBox(String[] array, int[] enabled, int selection) { 7903 mSelection = selection; 7904 mMultiple = false; 7905 7906 int length = array.length; 7907 mContainers = new Container[length]; 7908 for (int i = 0; i < length; i++) { 7909 mContainers[i] = new Container(); 7910 mContainers[i].mString = array[i]; 7911 mContainers[i].mEnabled = enabled[i]; 7912 mContainers[i].mId = i; 7913 } 7914 } 7915 7916 /* 7917 * Whenever the data set changes due to filtering, this class ensures 7918 * that the checked item remains checked. 7919 */ 7920 private class SingleDataSetObserver extends DataSetObserver { 7921 private long mCheckedId; 7922 private ListView mListView; 7923 private Adapter mAdapter; 7924 7925 /* 7926 * Create a new observer. 7927 * @param id The ID of the item to keep checked. 7928 * @param l ListView for getting and clearing the checked states 7929 * @param a Adapter for getting the IDs 7930 */ 7931 public SingleDataSetObserver(long id, ListView l, Adapter a) { 7932 mCheckedId = id; 7933 mListView = l; 7934 mAdapter = a; 7935 } 7936 7937 @Override 7938 public void onChanged() { 7939 // The filter may have changed which item is checked. Find the 7940 // item that the ListView thinks is checked. 7941 int position = mListView.getCheckedItemPosition(); 7942 long id = mAdapter.getItemId(position); 7943 if (mCheckedId != id) { 7944 // Clear the ListView's idea of the checked item, since 7945 // it is incorrect 7946 mListView.clearChoices(); 7947 // Search for mCheckedId. If it is in the filtered list, 7948 // mark it as checked 7949 int count = mAdapter.getCount(); 7950 for (int i = 0; i < count; i++) { 7951 if (mAdapter.getItemId(i) == mCheckedId) { 7952 mListView.setItemChecked(i, true); 7953 break; 7954 } 7955 } 7956 } 7957 } 7958 } 7959 7960 public void run() { 7961 final ListView listView = (ListView) LayoutInflater.from(mContext) 7962 .inflate(com.android.internal.R.layout.select_dialog, null); 7963 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 7964 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 7965 .setView(listView).setCancelable(true) 7966 .setInverseBackgroundForced(true); 7967 7968 if (mMultiple) { 7969 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 7970 public void onClick(DialogInterface dialog, int which) { 7971 mWebViewCore.sendMessage( 7972 EventHub.LISTBOX_CHOICES, 7973 adapter.getCount(), 0, 7974 listView.getCheckedItemPositions()); 7975 }}); 7976 b.setNegativeButton(android.R.string.cancel, 7977 new DialogInterface.OnClickListener() { 7978 public void onClick(DialogInterface dialog, int which) { 7979 mWebViewCore.sendMessage( 7980 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 7981 }}); 7982 } 7983 mListBoxDialog = b.create(); 7984 listView.setAdapter(adapter); 7985 listView.setFocusableInTouchMode(true); 7986 // There is a bug (1250103) where the checks in a ListView with 7987 // multiple items selected are associated with the positions, not 7988 // the ids, so the items do not properly retain their checks when 7989 // filtered. Do not allow filtering on multiple lists until 7990 // that bug is fixed. 7991 7992 listView.setTextFilterEnabled(!mMultiple); 7993 if (mMultiple) { 7994 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 7995 int length = mSelectedArray.length; 7996 for (int i = 0; i < length; i++) { 7997 listView.setItemChecked(mSelectedArray[i], true); 7998 } 7999 } else { 8000 listView.setOnItemClickListener(new OnItemClickListener() { 8001 public void onItemClick(AdapterView<?> parent, View v, 8002 int position, long id) { 8003 // Rather than sending the message right away, send it 8004 // after the page regains focus. 8005 mListBoxMessage = Message.obtain(null, 8006 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8007 mListBoxDialog.dismiss(); 8008 mListBoxDialog = null; 8009 } 8010 }); 8011 if (mSelection != -1) { 8012 listView.setSelection(mSelection); 8013 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8014 listView.setItemChecked(mSelection, true); 8015 DataSetObserver observer = new SingleDataSetObserver( 8016 adapter.getItemId(mSelection), listView, adapter); 8017 adapter.registerDataSetObserver(observer); 8018 } 8019 } 8020 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8021 public void onCancel(DialogInterface dialog) { 8022 mWebViewCore.sendMessage( 8023 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8024 mListBoxDialog = null; 8025 } 8026 }); 8027 mListBoxDialog.show(); 8028 } 8029 } 8030 8031 private Message mListBoxMessage; 8032 8033 /* 8034 * Request a dropdown menu for a listbox with multiple selection. 8035 * 8036 * @param array Labels for the listbox. 8037 * @param enabledArray State for each element in the list. See static 8038 * integers in Container class. 8039 * @param selectedArray Which positions are initally selected. 8040 */ 8041 void requestListBox(String[] array, int[] enabledArray, int[] 8042 selectedArray) { 8043 mPrivateHandler.post( 8044 new InvokeListBox(array, enabledArray, selectedArray)); 8045 } 8046 8047 /* 8048 * Request a dropdown menu for a listbox with single selection or a single 8049 * <select> element. 8050 * 8051 * @param array Labels for the listbox. 8052 * @param enabledArray State for each element in the list. See static 8053 * integers in Container class. 8054 * @param selection Which position is initally selected. 8055 */ 8056 void requestListBox(String[] array, int[] enabledArray, int selection) { 8057 mPrivateHandler.post( 8058 new InvokeListBox(array, enabledArray, selection)); 8059 } 8060 8061 // called by JNI 8062 private void sendMoveFocus(int frame, int node) { 8063 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8064 new WebViewCore.CursorData(frame, node, 0, 0)); 8065 } 8066 8067 // called by JNI 8068 private void sendMoveMouse(int frame, int node, int x, int y) { 8069 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8070 new WebViewCore.CursorData(frame, node, x, y)); 8071 } 8072 8073 /* 8074 * Send a mouse move event to the webcore thread. 8075 * 8076 * @param removeFocus Pass true to remove the WebTextView, if present. 8077 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8078 * called by JNI 8079 */ 8080 @SuppressWarnings("unused") 8081 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8082 if (removeFocus) { 8083 clearTextEntry(); 8084 } 8085 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8086 stopPaintingCaret ? 1 : 0, 0, 8087 cursorData()); 8088 } 8089 8090 /** 8091 * Called by JNI to send a message to the webcore thread that the user 8092 * touched the webpage. 8093 * @param touchGeneration Generation number of the touch, to ignore touches 8094 * after a new one has been generated. 8095 * @param frame Pointer to the frame holding the node that was touched. 8096 * @param node Pointer to the node touched. 8097 * @param x x-position of the touch. 8098 * @param y y-position of the touch. 8099 */ 8100 private void sendMotionUp(int touchGeneration, 8101 int frame, int node, int x, int y) { 8102 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8103 touchUpData.mMoveGeneration = touchGeneration; 8104 touchUpData.mFrame = frame; 8105 touchUpData.mNode = node; 8106 touchUpData.mX = x; 8107 touchUpData.mY = y; 8108 touchUpData.mNativeLayer = nativeScrollableLayer( 8109 x, y, touchUpData.mNativeLayerRect, null); 8110 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8111 } 8112 8113 8114 private int getScaledMaxXScroll() { 8115 int width; 8116 if (mHeightCanMeasure == false) { 8117 width = getViewWidth() / 4; 8118 } else { 8119 Rect visRect = new Rect(); 8120 calcOurVisibleRect(visRect); 8121 width = visRect.width() / 2; 8122 } 8123 // FIXME the divisor should be retrieved from somewhere 8124 return viewToContentX(width); 8125 } 8126 8127 private int getScaledMaxYScroll() { 8128 int height; 8129 if (mHeightCanMeasure == false) { 8130 height = getViewHeight() / 4; 8131 } else { 8132 Rect visRect = new Rect(); 8133 calcOurVisibleRect(visRect); 8134 height = visRect.height() / 2; 8135 } 8136 // FIXME the divisor should be retrieved from somewhere 8137 // the closest thing today is hard-coded into ScrollView.java 8138 // (from ScrollView.java, line 363) int maxJump = height/2; 8139 return Math.round(height * mZoomManager.getInvScale()); 8140 } 8141 8142 /** 8143 * Called by JNI to invalidate view 8144 */ 8145 private void viewInvalidate() { 8146 invalidate(); 8147 } 8148 8149 /** 8150 * Pass the key directly to the page. This assumes that 8151 * nativePageShouldHandleShiftAndArrows() returned true. 8152 */ 8153 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8154 int keyEventAction; 8155 int eventHubAction; 8156 if (down) { 8157 keyEventAction = KeyEvent.ACTION_DOWN; 8158 eventHubAction = EventHub.KEY_DOWN; 8159 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8160 } else { 8161 keyEventAction = KeyEvent.ACTION_UP; 8162 eventHubAction = EventHub.KEY_UP; 8163 } 8164 8165 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8166 1, (metaState & KeyEvent.META_SHIFT_ON) 8167 | (metaState & KeyEvent.META_ALT_ON) 8168 | (metaState & KeyEvent.META_SYM_ON) 8169 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8170 mWebViewCore.sendMessage(eventHubAction, event); 8171 } 8172 8173 // return true if the key was handled 8174 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8175 long time) { 8176 if (mNativeClass == 0) { 8177 return false; 8178 } 8179 mInitialHitTestResult = null; 8180 mLastCursorTime = time; 8181 mLastCursorBounds = nativeGetCursorRingBounds(); 8182 boolean keyHandled 8183 = nativeMoveCursor(keyCode, count, noScroll) == false; 8184 if (DebugFlags.WEB_VIEW) { 8185 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8186 + " mLastCursorTime=" + mLastCursorTime 8187 + " handled=" + keyHandled); 8188 } 8189 if (keyHandled == false) { 8190 return keyHandled; 8191 } 8192 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8193 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8194 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8195 // set last touch so that context menu related functions will work 8196 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8197 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8198 if (mHeightCanMeasure == false) { 8199 return keyHandled; 8200 } 8201 Rect visRect = new Rect(); 8202 calcOurVisibleRect(visRect); 8203 Rect outset = new Rect(visRect); 8204 int maxXScroll = visRect.width() / 2; 8205 int maxYScroll = visRect.height() / 2; 8206 outset.inset(-maxXScroll, -maxYScroll); 8207 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8208 return keyHandled; 8209 } 8210 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8211 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8212 maxXScroll); 8213 if (maxH > 0) { 8214 pinScrollBy(maxH, 0, true, 0); 8215 } else { 8216 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8217 -maxXScroll); 8218 if (maxH < 0) { 8219 pinScrollBy(maxH, 0, true, 0); 8220 } 8221 } 8222 if (mLastCursorBounds.isEmpty()) return keyHandled; 8223 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8224 return keyHandled; 8225 } 8226 if (DebugFlags.WEB_VIEW) { 8227 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8228 + contentCursorRingBounds); 8229 } 8230 requestRectangleOnScreen(viewCursorRingBounds); 8231 return keyHandled; 8232 } 8233 8234 /** 8235 * @return Whether accessibility script has been injected. 8236 */ 8237 private boolean accessibilityScriptInjected() { 8238 // TODO: Maybe the injected script should announce its presence in 8239 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8240 // will check that as one of the conditions it looks for 8241 return mAccessibilityScriptInjected; 8242 } 8243 8244 /** 8245 * Set the background color. It's white by default. Pass 8246 * zero to make the view transparent. 8247 * @param color the ARGB color described by Color.java 8248 */ 8249 @Override 8250 public void setBackgroundColor(int color) { 8251 mBackgroundColor = color; 8252 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8253 } 8254 8255 /** 8256 * @deprecated This method is now obsolete. 8257 */ 8258 @Deprecated 8259 public void debugDump() { 8260 nativeDebugDump(); 8261 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8262 } 8263 8264 /** 8265 * Draw the HTML page into the specified canvas. This call ignores any 8266 * view-specific zoom, scroll offset, or other changes. It does not draw 8267 * any view-specific chrome, such as progress or URL bars. 8268 * 8269 * @hide only needs to be accessible to Browser and testing 8270 */ 8271 public void drawPage(Canvas canvas) { 8272 nativeDraw(canvas, 0, 0, false); 8273 } 8274 8275 /** 8276 * Enable expanded tiles bound for smoother scrolling. 8277 * 8278 * @hide only used by the Browser 8279 */ 8280 public void setExpandedTileBounds(boolean enabled) { 8281 nativeSetExpandedTileBounds(enabled); 8282 } 8283 8284 /** 8285 * Set the time to wait between passing touches to WebCore. See also the 8286 * TOUCH_SENT_INTERVAL member for further discussion. 8287 * 8288 * @hide This is only used by the DRT test application. 8289 */ 8290 public void setTouchInterval(int interval) { 8291 mCurrentTouchInterval = interval; 8292 } 8293 8294 /** 8295 * Update our cache with updatedText. 8296 * @param updatedText The new text to put in our cache. 8297 */ 8298 /* package */ void updateCachedTextfield(String updatedText) { 8299 // Also place our generation number so that when we look at the cache 8300 // we recognize that it is up to date. 8301 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8302 } 8303 8304 /*package*/ void autoFillForm(int autoFillQueryId) { 8305 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8306 } 8307 8308 /* package */ ViewManager getViewManager() { 8309 return mViewManager; 8310 } 8311 8312 private native int nativeCacheHitFramePointer(); 8313 private native boolean nativeCacheHitIsPlugin(); 8314 private native Rect nativeCacheHitNodeBounds(); 8315 private native int nativeCacheHitNodePointer(); 8316 /* package */ native void nativeClearCursor(); 8317 private native void nativeCreate(int ptr); 8318 private native int nativeCursorFramePointer(); 8319 private native Rect nativeCursorNodeBounds(); 8320 private native int nativeCursorNodePointer(); 8321 private native boolean nativeCursorIntersects(Rect visibleRect); 8322 private native boolean nativeCursorIsAnchor(); 8323 private native boolean nativeCursorIsTextInput(); 8324 private native Point nativeCursorPosition(); 8325 private native String nativeCursorText(); 8326 /** 8327 * Returns true if the native cursor node says it wants to handle key events 8328 * (ala plugins). This can only be called if mNativeClass is non-zero! 8329 */ 8330 private native boolean nativeCursorWantsKeyEvents(); 8331 private native void nativeDebugDump(); 8332 private native void nativeDestroy(); 8333 8334 /** 8335 * Draw the picture set with a background color and extra. If 8336 * "splitIfNeeded" is true and the return value is not 0, the return value 8337 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8338 * native allocation can be freed. 8339 */ 8340 private native int nativeDraw(Canvas canvas, int color, int extra, 8341 boolean splitIfNeeded); 8342 private native void nativeDumpDisplayTree(String urlOrNull); 8343 private native boolean nativeEvaluateLayersAnimations(); 8344 private native int nativeGetDrawGLFunction(Rect rect, float scale, int extras); 8345 private native void nativeUpdateDrawGLFunction(Rect rect); 8346 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8347 private native void nativeExtendSelection(int x, int y); 8348 private native int nativeFindAll(String findLower, String findUpper, 8349 boolean sameAsLastSearch); 8350 private native void nativeFindNext(boolean forward); 8351 /* package */ native int nativeFocusCandidateFramePointer(); 8352 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8353 /* package */ native boolean nativeFocusCandidateIsPassword(); 8354 private native boolean nativeFocusCandidateIsRtlText(); 8355 private native boolean nativeFocusCandidateIsTextInput(); 8356 /* package */ native int nativeFocusCandidateMaxLength(); 8357 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8358 /* package */ native String nativeFocusCandidateName(); 8359 private native Rect nativeFocusCandidateNodeBounds(); 8360 /** 8361 * @return A Rect with left, top, right, bottom set to the corresponding 8362 * padding values in the focus candidate, if it is a textfield/textarea with 8363 * a style. Otherwise return null. This is not actually a rectangle; Rect 8364 * is being used to pass four integers. 8365 */ 8366 private native Rect nativeFocusCandidatePaddingRect(); 8367 /* package */ native int nativeFocusCandidatePointer(); 8368 private native String nativeFocusCandidateText(); 8369 /* package */ native float nativeFocusCandidateTextSize(); 8370 /* package */ native int nativeFocusCandidateLineHeight(); 8371 /** 8372 * Returns an integer corresponding to WebView.cpp::type. 8373 * See WebTextView.setType() 8374 */ 8375 private native int nativeFocusCandidateType(); 8376 private native boolean nativeFocusIsPlugin(); 8377 private native Rect nativeFocusNodeBounds(); 8378 /* package */ native int nativeFocusNodePointer(); 8379 private native Rect nativeGetCursorRingBounds(); 8380 private native String nativeGetSelection(); 8381 private native boolean nativeHasCursorNode(); 8382 private native boolean nativeHasFocusNode(); 8383 private native void nativeHideCursor(); 8384 private native boolean nativeHitSelection(int x, int y); 8385 private native String nativeImageURI(int x, int y); 8386 private native void nativeInstrumentReport(); 8387 private native Rect nativeLayerBounds(int layer); 8388 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8389 // return true if the page has been scrolled 8390 private native boolean nativeMotionUp(int x, int y, int slop); 8391 // returns false if it handled the key 8392 private native boolean nativeMoveCursor(int keyCode, int count, 8393 boolean noScroll); 8394 private native int nativeMoveGeneration(); 8395 private native void nativeMoveSelection(int x, int y); 8396 /** 8397 * @return true if the page should get the shift and arrow keys, rather 8398 * than select text/navigation. 8399 * 8400 * If the focus is a plugin, or if the focus and cursor match and are 8401 * a contentEditable element, then the page should handle these keys. 8402 */ 8403 private native boolean nativePageShouldHandleShiftAndArrows(); 8404 private native boolean nativePointInNavCache(int x, int y, int slop); 8405 // Like many other of our native methods, you must make sure that 8406 // mNativeClass is not null before calling this method. 8407 private native void nativeRecordButtons(boolean focused, 8408 boolean pressed, boolean invalidate); 8409 private native void nativeResetSelection(); 8410 private native Point nativeSelectableText(); 8411 private native void nativeSelectAll(); 8412 private native void nativeSelectBestAt(Rect rect); 8413 private native void nativeSelectAt(int x, int y); 8414 private native int nativeSelectionX(); 8415 private native int nativeSelectionY(); 8416 private native int nativeFindIndex(); 8417 private native void nativeSetExtendSelection(); 8418 private native void nativeSetFindIsEmpty(); 8419 private native void nativeSetFindIsUp(boolean isUp); 8420 private native void nativeSetHeightCanMeasure(boolean measure); 8421 private native void nativeSetBaseLayer(int layer, Rect invalRect, 8422 boolean showVisualIndicator); 8423 private native void nativeShowCursorTimed(); 8424 private native void nativeReplaceBaseContent(int content); 8425 private native void nativeCopyBaseContentToPicture(Picture pict); 8426 private native boolean nativeHasContent(); 8427 private native void nativeSetSelectionPointer(boolean set, 8428 float scale, int x, int y); 8429 private native boolean nativeStartSelection(int x, int y); 8430 private native void nativeStopGL(); 8431 private native Rect nativeSubtractLayers(Rect content); 8432 private native int nativeTextGeneration(); 8433 // Never call this version except by updateCachedTextfield(String) - 8434 // we always want to pass in our generation number. 8435 private native void nativeUpdateCachedTextfield(String updatedText, 8436 int generation); 8437 private native boolean nativeWordSelection(int x, int y); 8438 // return NO_LEFTEDGE means failure. 8439 static final int NO_LEFTEDGE = -1; 8440 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8441 8442 private native void nativeSetExpandedTileBounds(boolean enabled); 8443 8444 // Returns a pointer to the scrollable LayerAndroid at the given point. 8445 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8446 Rect scrollBounds); 8447 /** 8448 * Scroll the specified layer. 8449 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8450 * @param newX Destination x position to which to scroll. 8451 * @param newY Destination y position to which to scroll. 8452 * @return True if the layer is successfully scrolled. 8453 */ 8454 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8455} 8456