WebView.java revision 1453f0926f4e0dee99963eb28c86767194ea968c
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageInfo; 29import android.content.pm.PackageManager; 30import android.content.res.AssetManager; 31import android.content.res.Configuration; 32import android.database.DataSetObserver; 33import android.graphics.Bitmap; 34import android.graphics.BitmapFactory; 35import android.graphics.BitmapShader; 36import android.graphics.Canvas; 37import android.graphics.Color; 38import android.graphics.CornerPathEffect; 39import android.graphics.DrawFilter; 40import android.graphics.Paint; 41import android.graphics.PaintFlagsDrawFilter; 42import android.graphics.Picture; 43import android.graphics.Point; 44import android.graphics.Rect; 45import android.graphics.RectF; 46import android.graphics.Region; 47import android.graphics.SurfaceTexture; 48import android.graphics.Shader; 49import android.graphics.drawable.Drawable; 50import android.net.Proxy; 51import android.net.ProxyProperties; 52import android.net.Uri; 53import android.net.http.SslCertificate; 54import android.os.AsyncTask; 55import android.os.Bundle; 56import android.os.Handler; 57import android.os.Message; 58import android.provider.Settings; 59import android.speech.tts.TextToSpeech; 60import android.text.Selection; 61import android.text.Spannable; 62import android.util.AttributeSet; 63import android.util.EventLog; 64import android.util.Log; 65import android.view.Gravity; 66import android.view.HardwareCanvas; 67import android.view.InputDevice; 68import android.view.KeyCharacterMap; 69import android.view.KeyEvent; 70import android.view.LayoutInflater; 71import android.view.MotionEvent; 72import android.view.ScaleGestureDetector; 73import android.view.SoundEffectConstants; 74import android.view.VelocityTracker; 75import android.view.View; 76import android.view.ViewConfiguration; 77import android.view.ViewGroup; 78import android.view.ViewParent; 79import android.view.ViewTreeObserver; 80import android.view.accessibility.AccessibilityManager; 81import android.view.inputmethod.EditorInfo; 82import android.view.inputmethod.InputConnection; 83import android.view.inputmethod.InputMethodManager; 84import android.webkit.WebTextView.AutoCompleteAdapter; 85import android.webkit.WebViewCore.EventHub; 86import android.webkit.WebViewCore.TouchEventData; 87import android.webkit.WebViewCore.TouchHighlightData; 88import android.widget.AbsoluteLayout; 89import android.widget.Adapter; 90import android.widget.AdapterView; 91import android.widget.AdapterView.OnItemClickListener; 92import android.widget.ArrayAdapter; 93import android.widget.CheckedTextView; 94import android.widget.LinearLayout; 95import android.widget.ListView; 96import android.widget.OverScroller; 97import android.widget.Toast; 98 99import java.io.File; 100import java.io.FileInputStream; 101import java.io.FileNotFoundException; 102import java.io.FileOutputStream; 103import java.net.URLDecoder; 104import java.util.ArrayList; 105import java.util.HashMap; 106import java.util.HashSet; 107import java.util.List; 108import java.util.Map; 109import java.util.Set; 110import java.util.Vector; 111import java.util.regex.Matcher; 112import java.util.regex.Pattern; 113 114import junit.framework.Assert; 115 116/** 117 * <p>A View that displays web pages. This class is the basis upon which you 118 * can roll your own web browser or simply display some online content within your Activity. 119 * It uses the WebKit rendering engine to display 120 * web pages and includes methods to navigate forward and backward 121 * through a history, zoom in and out, perform text searches and more.</p> 122 * <p>To enable the built-in zoom, set 123 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 124 * (introduced in API version 3). 125 * <p>Note that, in order for your Activity to access the Internet and load web pages 126 * in a WebView, you must add the {@code INTERNET} permissions to your 127 * Android Manifest file:</p> 128 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 129 * 130 * <p>This must be a child of the <a 131 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 132 * element.</p> 133 * 134 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 135 * tutorial</a>.</p> 136 * 137 * <h3>Basic usage</h3> 138 * 139 * <p>By default, a WebView provides no browser-like widgets, does not 140 * enable JavaScript and web page errors are ignored. If your goal is only 141 * to display some HTML as a part of your UI, this is probably fine; 142 * the user won't need to interact with the web page beyond reading 143 * it, and the web page won't need to interact with the user. If you 144 * actually want a full-blown web browser, then you probably want to 145 * invoke the Browser application with a URL Intent rather than show it 146 * with a WebView. For example: 147 * <pre> 148 * Uri uri = Uri.parse("http://www.example.com"); 149 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 150 * startActivity(intent); 151 * </pre> 152 * <p>See {@link android.content.Intent} for more information.</p> 153 * 154 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 155 * or set the entire Activity window as a WebView during {@link 156 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 157 * <pre class="prettyprint"> 158 * WebView webview = new WebView(this); 159 * setContentView(webview); 160 * </pre> 161 * 162 * <p>Then load the desired web page:</p> 163 * <pre> 164 * // Simplest usage: note that an exception will NOT be thrown 165 * // if there is an error loading this page (see below). 166 * webview.loadUrl("http://slashdot.org/"); 167 * 168 * // OR, you can also load from an HTML string: 169 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 170 * webview.loadData(summary, "text/html", "utf-8"); 171 * // ... although note that there are restrictions on what this HTML can do. 172 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 173 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 174 * </pre> 175 * 176 * <p>A WebView has several customization points where you can add your 177 * own behavior. These are:</p> 178 * 179 * <ul> 180 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 181 * This class is called when something that might impact a 182 * browser UI happens, for instance, progress updates and 183 * JavaScript alerts are sent here (see <a 184 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 185 * </li> 186 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 187 * It will be called when things happen that impact the 188 * rendering of the content, eg, errors or form submissions. You 189 * can also intercept URL loading here (via {@link 190 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 191 * shouldOverrideUrlLoading()}).</li> 192 * <li>Modifying the {@link android.webkit.WebSettings}, such as 193 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 194 * setJavaScriptEnabled()}. </li> 195 * <li>Adding JavaScript-to-Java interfaces with the {@link 196 * android.webkit.WebView#addJavascriptInterface} method. 197 * This lets you bind Java objects into the WebView so they can be 198 * controlled from the web pages JavaScript.</li> 199 * </ul> 200 * 201 * <p>Here's a more complicated example, showing error handling, 202 * settings, and progress notification:</p> 203 * 204 * <pre class="prettyprint"> 205 * // Let's display the progress in the activity title bar, like the 206 * // browser app does. 207 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 208 * 209 * webview.getSettings().setJavaScriptEnabled(true); 210 * 211 * final Activity activity = this; 212 * webview.setWebChromeClient(new WebChromeClient() { 213 * public void onProgressChanged(WebView view, int progress) { 214 * // Activities and WebViews measure progress with different scales. 215 * // The progress meter will automatically disappear when we reach 100% 216 * activity.setProgress(progress * 1000); 217 * } 218 * }); 219 * webview.setWebViewClient(new WebViewClient() { 220 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 221 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 222 * } 223 * }); 224 * 225 * webview.loadUrl("http://slashdot.org/"); 226 * </pre> 227 * 228 * <h3>Cookie and window management</h3> 229 * 230 * <p>For obvious security reasons, your application has its own 231 * cache, cookie store etc.—it does not share the Browser 232 * application's data. Cookies are managed on a separate thread, so 233 * operations like index building don't block the UI 234 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 235 * if you want to use cookies in your application. 236 * </p> 237 * 238 * <p>By default, requests by the HTML to open new windows are 239 * ignored. This is true whether they be opened by JavaScript or by 240 * the target attribute on a link. You can customize your 241 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 242 * and render them in whatever manner you want.</p> 243 * 244 * <p>The standard behavior for an Activity is to be destroyed and 245 * recreated when the device orientation or any other configuration changes. This will cause 246 * the WebView to reload the current page. If you don't want that, you 247 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 248 * changes, and then just leave the WebView alone. It'll automatically 249 * re-orient itself as appropriate. Read <a 250 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 251 * more information about how to handle configuration changes during runtime.</p> 252 * 253 * 254 * <h3>Building web pages to support different screen densities</h3> 255 * 256 * <p>The screen density of a device is based on the screen resolution. A screen with low density 257 * has fewer available pixels per inch, where a screen with high density 258 * has more — sometimes significantly more — pixels per inch. The density of a 259 * screen is important because, other things being equal, a UI element (such as a button) whose 260 * height and width are defined in terms of screen pixels will appear larger on the lower density 261 * screen and smaller on the higher density screen. 262 * For simplicity, Android collapses all actual screen densities into three generalized densities: 263 * high, medium, and low.</p> 264 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 265 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 266 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 267 * are bigger). 268 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 269 * you (as a web developer) target screens with different screen densities.</p> 270 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 271 * <ul> 272 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 273 * default scaling factor used for the current device. For example, if the value of {@code 274 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 275 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 276 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 277 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 278 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 279 * (discussed below), then you can stop this default scaling behavior.</li> 280 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 281 * densities for which this style sheet is to be used. The corresponding value should be either 282 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 283 * density, or high density screens, respectively. For example: 284 * <pre> 285 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 286 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 287 * which is the high density pixel ratio.</p> 288 * </li> 289 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 290 * this to specify the target density for which the web page is designed, using the following 291 * values: 292 * <ul> 293 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 294 * occurs.</li> 295 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 296 * as appropriate.</li> 297 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 298 * low density screens scale down. This is also the default behavior.</li> 299 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 300 * as appropriate.</li> 301 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 302 * values are 70-400).</li> 303 * </ul> 304 * <p>Here's an example meta tag to specify the target density:</p> 305 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 306 * </ul> 307 * <p>If you want to modify your web page for different densities, by using the {@code 308 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 309 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 310 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 311 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 312 * 313 * 314 */ 315@Widget 316public class WebView extends AbsoluteLayout 317 implements ViewTreeObserver.OnGlobalFocusChangeListener, 318 ViewGroup.OnHierarchyChangeListener { 319 320 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 321 public void onGlobalLayout() { 322 if (isShown()) { 323 setGLRectViewport(); 324 } 325 } 326 } 327 328 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 329 public void onScrollChanged() { 330 if (isShown()) { 331 setGLRectViewport(); 332 } 333 } 334 } 335 336 // The listener to capture global layout change event. 337 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 338 339 // The listener to capture scroll event. 340 private InnerScrollChangedListener mScrollChangedListener = null; 341 342 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 343 // the screen all-the-time. Good for profiling our drawing code 344 static private final boolean AUTO_REDRAW_HACK = false; 345 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 346 private boolean mAutoRedraw; 347 348 // Reference to the AlertDialog displayed by InvokeListBox. 349 // It's used to dismiss the dialog in destroy if not done before. 350 private AlertDialog mListBoxDialog = null; 351 352 static final String LOGTAG = "webview"; 353 354 private ZoomManager mZoomManager; 355 356 private final Rect mGLRectViewport = new Rect(); 357 private final Rect mViewRectViewport = new Rect(); 358 private boolean mGLViewportEmpty = false; 359 360 /** 361 * Transportation object for returning WebView across thread boundaries. 362 */ 363 public class WebViewTransport { 364 private WebView mWebview; 365 366 /** 367 * Set the WebView to the transportation object. 368 * @param webview The WebView to transport. 369 */ 370 public synchronized void setWebView(WebView webview) { 371 mWebview = webview; 372 } 373 374 /** 375 * Return the WebView object. 376 * @return WebView The transported WebView object. 377 */ 378 public synchronized WebView getWebView() { 379 return mWebview; 380 } 381 } 382 383 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 384 private final CallbackProxy mCallbackProxy; 385 386 private final WebViewDatabase mDatabase; 387 388 // SSL certificate for the main top-level page (if secure) 389 private SslCertificate mCertificate; 390 391 // Native WebView pointer that is 0 until the native object has been 392 // created. 393 private int mNativeClass; 394 // This would be final but it needs to be set to null when the WebView is 395 // destroyed. 396 private WebViewCore mWebViewCore; 397 // Handler for dispatching UI messages. 398 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 399 private WebTextView mWebTextView; 400 // Used to ignore changes to webkit text that arrives to the UI side after 401 // more key events. 402 private int mTextGeneration; 403 404 /* package */ void incrementTextGeneration() { mTextGeneration++; } 405 406 // Used by WebViewCore to create child views. 407 /* package */ final ViewManager mViewManager; 408 409 // Used to display in full screen mode 410 PluginFullScreenHolder mFullScreenHolder; 411 412 /** 413 * Position of the last touch event in pixels. 414 * Use integer to prevent loss of dragging delta calculation accuracy; 415 * which was done in float and converted to integer, and resulted in gradual 416 * and compounding touch position and view dragging mismatch. 417 */ 418 private int mLastTouchX; 419 private int mLastTouchY; 420 421 /** 422 * Time of the last touch event. 423 */ 424 private long mLastTouchTime; 425 426 /** 427 * Time of the last time sending touch event to WebViewCore 428 */ 429 private long mLastSentTouchTime; 430 431 /** 432 * The minimum elapsed time before sending another ACTION_MOVE event to 433 * WebViewCore. This really should be tuned for each type of the devices. 434 * For example in Google Map api test case, it takes Dream device at least 435 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 436 * triggering the layout and drawing the picture. While the same process 437 * takes 60+ms on the current high speed device. If we make 438 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 439 * to WebViewCore queue and the real layout and draw events will be pushed 440 * to further, which slows down the refresh rate. Choose 50 to favor the 441 * current high speed devices. For Dream like devices, 100 is a better 442 * choice. Maybe make this in the buildspec later. 443 * (Update 12/14/2010: changed to 0 since current device should be able to 444 * handle the raw events and Map team voted to have the raw events too. 445 */ 446 private static final int TOUCH_SENT_INTERVAL = 0; 447 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 448 449 /** 450 * Helper class to get velocity for fling 451 */ 452 VelocityTracker mVelocityTracker; 453 private int mMaximumFling; 454 private float mLastVelocity; 455 private float mLastVelX; 456 private float mLastVelY; 457 458 // The id of the native layer being scrolled. 459 private int mScrollingLayer; 460 private Rect mScrollingLayerRect = new Rect(); 461 462 // only trigger accelerated fling if the new velocity is at least 463 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 464 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 465 466 /** 467 * Touch mode 468 */ 469 private int mTouchMode = TOUCH_DONE_MODE; 470 private static final int TOUCH_INIT_MODE = 1; 471 private static final int TOUCH_DRAG_START_MODE = 2; 472 private static final int TOUCH_DRAG_MODE = 3; 473 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 474 private static final int TOUCH_SHORTPRESS_MODE = 5; 475 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 476 private static final int TOUCH_DONE_MODE = 7; 477 private static final int TOUCH_PINCH_DRAG = 8; 478 private static final int TOUCH_DRAG_LAYER_MODE = 9; 479 480 // Whether to forward the touch events to WebCore 481 // Can only be set by WebKit via JNI. 482 private boolean mForwardTouchEvents = false; 483 484 // Whether to prevent default during touch. The initial value depends on 485 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 486 // for touch down. Otherwise UI will wait for the answer of the first 487 // confirmed move before taking over the control. 488 private static final int PREVENT_DEFAULT_NO = 0; 489 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 490 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 491 private static final int PREVENT_DEFAULT_YES = 3; 492 private static final int PREVENT_DEFAULT_IGNORE = 4; 493 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 494 495 // true when the touch movement exceeds the slop 496 private boolean mConfirmMove; 497 498 // if true, touch events will be first processed by WebCore, if prevent 499 // default is not set, the UI will continue handle them. 500 private boolean mDeferTouchProcess; 501 502 // to avoid interfering with the current touch events, track them 503 // separately. Currently no snapping or fling in the deferred process mode 504 private int mDeferTouchMode = TOUCH_DONE_MODE; 505 private float mLastDeferTouchX; 506 private float mLastDeferTouchY; 507 508 // To keep track of whether the current drag was initiated by a WebTextView, 509 // so that we know not to hide the cursor 510 boolean mDragFromTextInput; 511 512 // Whether or not to draw the cursor ring. 513 private boolean mDrawCursorRing = true; 514 515 // true if onPause has been called (and not onResume) 516 private boolean mIsPaused; 517 518 private HitTestResult mInitialHitTestResult; 519 520 /** 521 * Customizable constant 522 */ 523 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 524 private int mTouchSlopSquare; 525 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 526 private int mDoubleTapSlopSquare; 527 // pre-computed density adjusted navigation slop 528 private int mNavSlop; 529 // This should be ViewConfiguration.getTapTimeout() 530 // But system time out is 100ms, which is too short for the browser. 531 // In the browser, if it switches out of tap too soon, jump tap won't work. 532 private static final int TAP_TIMEOUT = 200; 533 // This should be ViewConfiguration.getLongPressTimeout() 534 // But system time out is 500ms, which is too short for the browser. 535 // With a short timeout, it's difficult to treat trigger a short press. 536 private static final int LONG_PRESS_TIMEOUT = 1000; 537 // needed to avoid flinging after a pause of no movement 538 private static final int MIN_FLING_TIME = 250; 539 // draw unfiltered after drag is held without movement 540 private static final int MOTIONLESS_TIME = 100; 541 // The amount of content to overlap between two screens when going through 542 // pages with the space bar, in pixels. 543 private static final int PAGE_SCROLL_OVERLAP = 24; 544 545 /** 546 * These prevent calling requestLayout if either dimension is fixed. This 547 * depends on the layout parameters and the measure specs. 548 */ 549 boolean mWidthCanMeasure; 550 boolean mHeightCanMeasure; 551 552 // Remember the last dimensions we sent to the native side so we can avoid 553 // sending the same dimensions more than once. 554 int mLastWidthSent; 555 int mLastHeightSent; 556 // Since view height sent to webkit could be fixed to avoid relayout, this 557 // value records the last sent actual view height. 558 int mLastActualHeightSent; 559 560 private int mContentWidth; // cache of value from WebViewCore 561 private int mContentHeight; // cache of value from WebViewCore 562 563 // Need to have the separate control for horizontal and vertical scrollbar 564 // style than the View's single scrollbar style 565 private boolean mOverlayHorizontalScrollbar = true; 566 private boolean mOverlayVerticalScrollbar = false; 567 568 // our standard speed. this way small distances will be traversed in less 569 // time than large distances, but we cap the duration, so that very large 570 // distances won't take too long to get there. 571 private static final int STD_SPEED = 480; // pixels per second 572 // time for the longest scroll animation 573 private static final int MAX_DURATION = 750; // milliseconds 574 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 575 576 // Used by OverScrollGlow 577 OverScroller mScroller; 578 579 private boolean mInOverScrollMode = false; 580 private static Paint mOverScrollBackground; 581 private static Paint mOverScrollBorder; 582 583 private boolean mWrapContent; 584 private static final int MOTIONLESS_FALSE = 0; 585 private static final int MOTIONLESS_PENDING = 1; 586 private static final int MOTIONLESS_TRUE = 2; 587 private static final int MOTIONLESS_IGNORE = 3; 588 private int mHeldMotionless; 589 590 // An instance for injecting accessibility in WebViews with disabled 591 // JavaScript or ones for which no accessibility script exists 592 private AccessibilityInjector mAccessibilityInjector; 593 594 // flag indicating if accessibility script is injected so we 595 // know to handle Shift and arrows natively first 596 private boolean mAccessibilityScriptInjected; 597 598 // the color used to highlight the touch rectangles 599 private static final int mHightlightColor = 0x33000000; 600 // the round corner for the highlight path 601 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 602 // the region indicating where the user touched on the screen 603 private Region mTouchHighlightRegion = new Region(); 604 // the paint for the touch highlight 605 private Paint mTouchHightlightPaint; 606 // debug only 607 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 608 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 609 private Paint mTouchCrossHairColor; 610 private int mTouchHighlightX; 611 private int mTouchHighlightY; 612 613 // Basically this proxy is used to tell the Video to update layer tree at 614 // SetBaseLayer time and to pause when WebView paused. 615 private HTML5VideoViewProxy mHTML5VideoViewProxy; 616 617 /* 618 * Private message ids 619 */ 620 private static final int REMEMBER_PASSWORD = 1; 621 private static final int NEVER_REMEMBER_PASSWORD = 2; 622 private static final int SWITCH_TO_SHORTPRESS = 3; 623 private static final int SWITCH_TO_LONGPRESS = 4; 624 private static final int RELEASE_SINGLE_TAP = 5; 625 private static final int REQUEST_FORM_DATA = 6; 626 private static final int RESUME_WEBCORE_PRIORITY = 7; 627 private static final int DRAG_HELD_MOTIONLESS = 8; 628 private static final int AWAKEN_SCROLL_BARS = 9; 629 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 630 private static final int SCROLL_SELECT_TEXT = 11; 631 632 633 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 634 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 635 636 /* 637 * Package message ids 638 */ 639 static final int SCROLL_TO_MSG_ID = 101; 640 static final int NEW_PICTURE_MSG_ID = 105; 641 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 642 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 643 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 644 static final int UPDATE_ZOOM_RANGE = 109; 645 static final int UNHANDLED_NAV_KEY = 110; 646 static final int CLEAR_TEXT_ENTRY = 111; 647 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 648 static final int SHOW_RECT_MSG_ID = 113; 649 static final int LONG_PRESS_CENTER = 114; 650 static final int PREVENT_TOUCH_ID = 115; 651 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 652 // obj=Rect in doc coordinates 653 static final int INVAL_RECT_MSG_ID = 117; 654 static final int REQUEST_KEYBOARD = 118; 655 static final int DO_MOTION_UP = 119; 656 static final int SHOW_FULLSCREEN = 120; 657 static final int HIDE_FULLSCREEN = 121; 658 static final int DOM_FOCUS_CHANGED = 122; 659 static final int REPLACE_BASE_CONTENT = 123; 660 static final int FORM_DID_BLUR = 124; 661 static final int RETURN_LABEL = 125; 662 static final int FIND_AGAIN = 126; 663 static final int CENTER_FIT_RECT = 127; 664 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 665 static final int SET_SCROLLBAR_MODES = 129; 666 static final int SELECTION_STRING_CHANGED = 130; 667 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 668 static final int SAVE_WEBARCHIVE_FINISHED = 132; 669 670 static final int SET_AUTOFILLABLE = 133; 671 static final int AUTOFILL_COMPLETE = 134; 672 673 static final int SELECT_AT = 135; 674 static final int SCREEN_ON = 136; 675 static final int ENTER_FULLSCREEN_VIDEO = 137; 676 677 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 678 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 679 680 static final String[] HandlerPrivateDebugString = { 681 "REMEMBER_PASSWORD", // = 1; 682 "NEVER_REMEMBER_PASSWORD", // = 2; 683 "SWITCH_TO_SHORTPRESS", // = 3; 684 "SWITCH_TO_LONGPRESS", // = 4; 685 "RELEASE_SINGLE_TAP", // = 5; 686 "REQUEST_FORM_DATA", // = 6; 687 "RESUME_WEBCORE_PRIORITY", // = 7; 688 "DRAG_HELD_MOTIONLESS", // = 8; 689 "AWAKEN_SCROLL_BARS", // = 9; 690 "PREVENT_DEFAULT_TIMEOUT", // = 10; 691 "SCROLL_SELECT_TEXT" // = 11; 692 }; 693 694 static final String[] HandlerPackageDebugString = { 695 "SCROLL_TO_MSG_ID", // = 101; 696 "102", // = 102; 697 "103", // = 103; 698 "104", // = 104; 699 "NEW_PICTURE_MSG_ID", // = 105; 700 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 701 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 702 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 703 "UPDATE_ZOOM_RANGE", // = 109; 704 "UNHANDLED_NAV_KEY", // = 110; 705 "CLEAR_TEXT_ENTRY", // = 111; 706 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 707 "SHOW_RECT_MSG_ID", // = 113; 708 "LONG_PRESS_CENTER", // = 114; 709 "PREVENT_TOUCH_ID", // = 115; 710 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 711 "INVAL_RECT_MSG_ID", // = 117; 712 "REQUEST_KEYBOARD", // = 118; 713 "DO_MOTION_UP", // = 119; 714 "SHOW_FULLSCREEN", // = 120; 715 "HIDE_FULLSCREEN", // = 121; 716 "DOM_FOCUS_CHANGED", // = 122; 717 "REPLACE_BASE_CONTENT", // = 123; 718 "FORM_DID_BLUR", // = 124; 719 "RETURN_LABEL", // = 125; 720 "FIND_AGAIN", // = 126; 721 "CENTER_FIT_RECT", // = 127; 722 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 723 "SET_SCROLLBAR_MODES", // = 129; 724 "SELECTION_STRING_CHANGED", // = 130; 725 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 726 "SAVE_WEBARCHIVE_FINISHED", // = 132; 727 "SET_AUTOFILLABLE", // = 133; 728 "AUTOFILL_COMPLETE", // = 134; 729 "SELECT_AT", // = 135; 730 "SCREEN_ON", // = 136; 731 "ENTER_FULLSCREEN_VIDEO" // = 137; 732 }; 733 734 // If the site doesn't use the viewport meta tag to specify the viewport, 735 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 736 static final int DEFAULT_VIEWPORT_WIDTH = 980; 737 738 // normally we try to fit the content to the minimum preferred width 739 // calculated by the Webkit. To avoid the bad behavior when some site's 740 // minimum preferred width keeps growing when changing the viewport width or 741 // the minimum preferred width is huge, an upper limit is needed. 742 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 743 744 // initial scale in percent. 0 means using default. 745 private int mInitialScaleInPercent = 0; 746 747 // Whether or not a scroll event should be sent to webkit. This is only set 748 // to false when restoring the scroll position. 749 private boolean mSendScrollEvent = true; 750 751 private int mSnapScrollMode = SNAP_NONE; 752 private static final int SNAP_NONE = 0; 753 private static final int SNAP_LOCK = 1; // not a separate state 754 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 755 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 756 private boolean mSnapPositive; 757 758 // keep these in sync with their counterparts in WebView.cpp 759 private static final int DRAW_EXTRAS_NONE = 0; 760 private static final int DRAW_EXTRAS_FIND = 1; 761 private static final int DRAW_EXTRAS_SELECTION = 2; 762 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 763 764 // keep this in sync with WebCore:ScrollbarMode in WebKit 765 private static final int SCROLLBAR_AUTO = 0; 766 private static final int SCROLLBAR_ALWAYSOFF = 1; 767 // as we auto fade scrollbar, this is ignored. 768 private static final int SCROLLBAR_ALWAYSON = 2; 769 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 770 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 771 772 // constants for determining script injection strategy 773 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 774 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 775 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 776 777 // the alias via which accessibility JavaScript interface is exposed 778 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 779 780 // JavaScript to inject the script chooser which will 781 // pick the right script for the current URL 782 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 783 "javascript:(function() {" + 784 " var chooser = document.createElement('script');" + 785 " chooser.type = 'text/javascript';" + 786 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 787 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 788 " })();"; 789 790 // Regular expression that matches the "axs" URL parameter. 791 // The value of 0 means the accessibility script is opted out 792 // The value of 1 means the accessibility script is already injected 793 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 794 795 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 796 private TextToSpeech mTextToSpeech; 797 798 // variable to cache the above pattern in case accessibility is enabled. 799 private Pattern mMatchAxsUrlParameterPattern; 800 801 /** 802 * Max distance to overscroll by in pixels. 803 * This how far content can be pulled beyond its normal bounds by the user. 804 */ 805 private int mOverscrollDistance; 806 807 /** 808 * Max distance to overfling by in pixels. 809 * This is how far flinged content can move beyond the end of its normal bounds. 810 */ 811 private int mOverflingDistance; 812 813 private OverScrollGlow mOverScrollGlow; 814 815 // Used to match key downs and key ups 816 private Vector<Integer> mKeysPressed; 817 818 /* package */ static boolean mLogEvent = true; 819 820 // for event log 821 private long mLastTouchUpTime = 0; 822 823 private WebViewCore.AutoFillData mAutoFillData; 824 825 /** 826 * URI scheme for telephone number 827 */ 828 public static final String SCHEME_TEL = "tel:"; 829 /** 830 * URI scheme for email address 831 */ 832 public static final String SCHEME_MAILTO = "mailto:"; 833 /** 834 * URI scheme for map address 835 */ 836 public static final String SCHEME_GEO = "geo:0,0?q="; 837 838 private int mBackgroundColor = Color.WHITE; 839 840 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 841 private int mAutoScrollX = 0; 842 private int mAutoScrollY = 0; 843 private int mMinAutoScrollX = 0; 844 private int mMaxAutoScrollX = 0; 845 private int mMinAutoScrollY = 0; 846 private int mMaxAutoScrollY = 0; 847 private Rect mScrollingLayerBounds = new Rect(); 848 private boolean mSentAutoScrollMessage = false; 849 850 // used for serializing asynchronously handled touch events. 851 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 852 853 // Used to notify listeners of a new picture. 854 private PictureListener mPictureListener; 855 /** 856 * Interface to listen for new pictures as they change. 857 */ 858 public interface PictureListener { 859 /** 860 * Notify the listener that the picture has changed. 861 * @param view The WebView that owns the picture. 862 * @param picture The new picture. 863 */ 864 public void onNewPicture(WebView view, Picture picture); 865 } 866 867 // FIXME: Want to make this public, but need to change the API file. 868 public /*static*/ class HitTestResult { 869 /** 870 * Default HitTestResult, where the target is unknown 871 */ 872 public static final int UNKNOWN_TYPE = 0; 873 /** 874 * HitTestResult for hitting a HTML::a tag 875 */ 876 public static final int ANCHOR_TYPE = 1; 877 /** 878 * HitTestResult for hitting a phone number 879 */ 880 public static final int PHONE_TYPE = 2; 881 /** 882 * HitTestResult for hitting a map address 883 */ 884 public static final int GEO_TYPE = 3; 885 /** 886 * HitTestResult for hitting an email address 887 */ 888 public static final int EMAIL_TYPE = 4; 889 /** 890 * HitTestResult for hitting an HTML::img tag 891 */ 892 public static final int IMAGE_TYPE = 5; 893 /** 894 * HitTestResult for hitting a HTML::a tag which contains HTML::img 895 */ 896 public static final int IMAGE_ANCHOR_TYPE = 6; 897 /** 898 * HitTestResult for hitting a HTML::a tag with src=http 899 */ 900 public static final int SRC_ANCHOR_TYPE = 7; 901 /** 902 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 903 */ 904 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 905 /** 906 * HitTestResult for hitting an edit text area 907 */ 908 public static final int EDIT_TEXT_TYPE = 9; 909 910 private int mType; 911 private String mExtra; 912 913 HitTestResult() { 914 mType = UNKNOWN_TYPE; 915 } 916 917 private void setType(int type) { 918 mType = type; 919 } 920 921 private void setExtra(String extra) { 922 mExtra = extra; 923 } 924 925 public int getType() { 926 return mType; 927 } 928 929 public String getExtra() { 930 return mExtra; 931 } 932 } 933 934 /** 935 * Construct a new WebView with a Context object. 936 * @param context A Context object used to access application assets. 937 */ 938 public WebView(Context context) { 939 this(context, null); 940 } 941 942 /** 943 * Construct a new WebView with layout parameters. 944 * @param context A Context object used to access application assets. 945 * @param attrs An AttributeSet passed to our parent. 946 */ 947 public WebView(Context context, AttributeSet attrs) { 948 this(context, attrs, com.android.internal.R.attr.webViewStyle); 949 } 950 951 /** 952 * Construct a new WebView with layout parameters and a default style. 953 * @param context A Context object used to access application assets. 954 * @param attrs An AttributeSet passed to our parent. 955 * @param defStyle The default style resource ID. 956 */ 957 public WebView(Context context, AttributeSet attrs, int defStyle) { 958 this(context, attrs, defStyle, false); 959 } 960 961 /** 962 * Construct a new WebView with layout parameters and a default style. 963 * @param context A Context object used to access application assets. 964 * @param attrs An AttributeSet passed to our parent. 965 * @param defStyle The default style resource ID. 966 */ 967 public WebView(Context context, AttributeSet attrs, int defStyle, 968 boolean privateBrowsing) { 969 this(context, attrs, defStyle, null, privateBrowsing); 970 } 971 972 /** 973 * Construct a new WebView with layout parameters, a default style and a set 974 * of custom Javscript interfaces to be added to the WebView at initialization 975 * time. This guarantees that these interfaces will be available when the JS 976 * context is initialized. 977 * @param context A Context object used to access application assets. 978 * @param attrs An AttributeSet passed to our parent. 979 * @param defStyle The default style resource ID. 980 * @param javaScriptInterfaces is a Map of interface names, as keys, and 981 * object implementing those interfaces, as values. 982 * @hide pending API council approval. 983 */ 984 protected WebView(Context context, AttributeSet attrs, int defStyle, 985 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 986 super(context, attrs, defStyle); 987 988 // Used by the chrome stack to find application paths 989 JniUtil.setContext(context); 990 991 mCallbackProxy = new CallbackProxy(context, this); 992 mViewManager = new ViewManager(this); 993 L10nUtils.setApplicationContext(context.getApplicationContext()); 994 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 995 mDatabase = WebViewDatabase.getInstance(context); 996 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 997 mZoomManager = new ZoomManager(this, mCallbackProxy); 998 999 /* The init method must follow the creation of certain member variables, 1000 * such as the mZoomManager. 1001 */ 1002 init(); 1003 setupPackageListener(context); 1004 setupProxyListener(context); 1005 updateMultiTouchSupport(context); 1006 1007 if (privateBrowsing) { 1008 startPrivateBrowsing(); 1009 } 1010 1011 mAutoFillData = new WebViewCore.AutoFillData(); 1012 } 1013 1014 private static class ProxyReceiver extends BroadcastReceiver { 1015 @Override 1016 public void onReceive(Context context, Intent intent) { 1017 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1018 handleProxyBroadcast(intent); 1019 } 1020 } 1021 } 1022 1023 /* 1024 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1025 */ 1026 private static boolean sProxyReceiverAdded; 1027 1028 private static synchronized void setupProxyListener(Context context) { 1029 if (sProxyReceiverAdded) { 1030 return; 1031 } 1032 IntentFilter filter = new IntentFilter(); 1033 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1034 Intent currentProxy = context.getApplicationContext().registerReceiver( 1035 new ProxyReceiver(), filter); 1036 sProxyReceiverAdded = true; 1037 if (currentProxy != null) { 1038 handleProxyBroadcast(currentProxy); 1039 } 1040 } 1041 1042 private static void handleProxyBroadcast(Intent intent) { 1043 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1044 if (proxyProperties == null || proxyProperties.getHost() == null) { 1045 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1046 return; 1047 } 1048 1049 String host = proxyProperties.getHost(); 1050 int port = proxyProperties.getPort(); 1051 if (port != 0) 1052 host += ":" + port; 1053 1054 // TODO: Handle exclusion list 1055 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1056 // there 1057 String exclusionList = proxyProperties.getExclusionList(); 1058 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1059 } 1060 1061 /* 1062 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1063 * or ACTION_PACKAGE_REMOVED. 1064 */ 1065 private static boolean sPackageInstallationReceiverAdded = false; 1066 1067 /* 1068 * A set of Google packages we monitor for the 1069 * navigator.isApplicationInstalled() API. Add additional packages as 1070 * needed. 1071 */ 1072 private static Set<String> sGoogleApps; 1073 static { 1074 sGoogleApps = new HashSet<String>(); 1075 sGoogleApps.add("com.google.android.youtube"); 1076 } 1077 1078 private static class PackageListener extends BroadcastReceiver { 1079 @Override 1080 public void onReceive(Context context, Intent intent) { 1081 final String action = intent.getAction(); 1082 final String packageName = intent.getData().getSchemeSpecificPart(); 1083 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1084 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1085 // if it is replacing, refreshPlugins() when adding 1086 return; 1087 } 1088 1089 if (sGoogleApps.contains(packageName)) { 1090 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1091 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1092 } else { 1093 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1094 } 1095 } 1096 1097 PluginManager pm = PluginManager.getInstance(context); 1098 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1099 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1100 } 1101 } 1102 } 1103 1104 private void setupPackageListener(Context context) { 1105 1106 /* 1107 * we must synchronize the instance check and the creation of the 1108 * receiver to ensure that only ONE receiver exists for all WebView 1109 * instances. 1110 */ 1111 synchronized (WebView.class) { 1112 1113 // if the receiver already exists then we do not need to register it 1114 // again 1115 if (sPackageInstallationReceiverAdded) { 1116 return; 1117 } 1118 1119 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1120 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1121 filter.addDataScheme("package"); 1122 BroadcastReceiver packageListener = new PackageListener(); 1123 context.getApplicationContext().registerReceiver(packageListener, filter); 1124 sPackageInstallationReceiverAdded = true; 1125 } 1126 1127 // check if any of the monitored apps are already installed 1128 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1129 1130 @Override 1131 protected Set<String> doInBackground(Void... unused) { 1132 Set<String> installedPackages = new HashSet<String>(); 1133 PackageManager pm = mContext.getPackageManager(); 1134 for (String name : sGoogleApps) { 1135 try { 1136 PackageInfo pInfo = pm.getPackageInfo(name, 1137 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1138 installedPackages.add(name); 1139 } catch(PackageManager.NameNotFoundException e) { 1140 // package not found 1141 } 1142 } 1143 return installedPackages; 1144 } 1145 1146 // Executes on the UI thread 1147 @Override 1148 protected void onPostExecute(Set<String> installedPackages) { 1149 if (mWebViewCore != null) { 1150 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1151 } 1152 } 1153 }; 1154 task.execute(); 1155 } 1156 1157 void updateMultiTouchSupport(Context context) { 1158 mZoomManager.updateMultiTouchSupport(context); 1159 } 1160 1161 private void init() { 1162 setWillNotDraw(false); 1163 setFocusable(true); 1164 setFocusableInTouchMode(true); 1165 setClickable(true); 1166 setLongClickable(true); 1167 1168 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1169 int slop = configuration.getScaledTouchSlop(); 1170 mTouchSlopSquare = slop * slop; 1171 mMinLockSnapReverseDistance = slop; 1172 slop = configuration.getScaledDoubleTapSlop(); 1173 mDoubleTapSlopSquare = slop * slop; 1174 final float density = getContext().getResources().getDisplayMetrics().density; 1175 // use one line height, 16 based on our current default font, for how 1176 // far we allow a touch be away from the edge of a link 1177 mNavSlop = (int) (16 * density); 1178 mZoomManager.init(density); 1179 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1180 1181 // Compute the inverse of the density squared. 1182 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1183 1184 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1185 mOverflingDistance = configuration.getScaledOverflingDistance(); 1186 1187 setScrollBarStyle(super.getScrollBarStyle()); 1188 // Initially use a size of two, since the user is likely to only hold 1189 // down two keys at a time (shift + another key) 1190 mKeysPressed = new Vector<Integer>(2); 1191 mHTML5VideoViewProxy = null ; 1192 } 1193 1194 /** 1195 * Adds accessibility APIs to JavaScript. 1196 * 1197 * Note: This method is responsible to performing the necessary 1198 * check if the accessibility APIs should be exposed. 1199 */ 1200 private void addAccessibilityApisToJavaScript() { 1201 if (AccessibilityManager.getInstance(mContext).isEnabled() 1202 && getSettings().getJavaScriptEnabled()) { 1203 // exposing the TTS for now ... 1204 mTextToSpeech = new TextToSpeech(getContext(), null); 1205 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1206 } 1207 } 1208 1209 /** 1210 * Removes accessibility APIs from JavaScript. 1211 */ 1212 private void removeAccessibilityApisFromJavaScript() { 1213 // exposing the TTS for now ... 1214 if (mTextToSpeech != null) { 1215 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1216 mTextToSpeech.shutdown(); 1217 mTextToSpeech = null; 1218 } 1219 } 1220 1221 @Override 1222 public void setOverScrollMode(int mode) { 1223 super.setOverScrollMode(mode); 1224 if (mode != OVER_SCROLL_NEVER) { 1225 if (mOverScrollGlow == null) { 1226 mOverScrollGlow = new OverScrollGlow(this); 1227 } 1228 } else { 1229 mOverScrollGlow = null; 1230 } 1231 } 1232 1233 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1234 final float density = mContext.getResources().getDisplayMetrics().density 1235 * 100 / zoomDensity; 1236 mNavSlop = (int) (16 * density); 1237 mZoomManager.updateDefaultZoomDensity(density); 1238 } 1239 1240 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1241 String password, final Message resumeMsg) { 1242 boolean rVal = false; 1243 if (resumeMsg == null) { 1244 // null resumeMsg implies saving password silently 1245 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1246 } else { 1247 final Message remember = mPrivateHandler.obtainMessage( 1248 REMEMBER_PASSWORD); 1249 remember.getData().putString("host", schemePlusHost); 1250 remember.getData().putString("username", username); 1251 remember.getData().putString("password", password); 1252 remember.obj = resumeMsg; 1253 1254 final Message neverRemember = mPrivateHandler.obtainMessage( 1255 NEVER_REMEMBER_PASSWORD); 1256 neverRemember.getData().putString("host", schemePlusHost); 1257 neverRemember.getData().putString("username", username); 1258 neverRemember.getData().putString("password", password); 1259 neverRemember.obj = resumeMsg; 1260 1261 new AlertDialog.Builder(getContext()) 1262 .setTitle(com.android.internal.R.string.save_password_label) 1263 .setMessage(com.android.internal.R.string.save_password_message) 1264 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1265 new DialogInterface.OnClickListener() { 1266 public void onClick(DialogInterface dialog, int which) { 1267 resumeMsg.sendToTarget(); 1268 } 1269 }) 1270 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1271 new DialogInterface.OnClickListener() { 1272 public void onClick(DialogInterface dialog, int which) { 1273 remember.sendToTarget(); 1274 } 1275 }) 1276 .setNegativeButton(com.android.internal.R.string.save_password_never, 1277 new DialogInterface.OnClickListener() { 1278 public void onClick(DialogInterface dialog, int which) { 1279 neverRemember.sendToTarget(); 1280 } 1281 }) 1282 .setOnCancelListener(new OnCancelListener() { 1283 public void onCancel(DialogInterface dialog) { 1284 resumeMsg.sendToTarget(); 1285 } 1286 }).show(); 1287 // Return true so that WebViewCore will pause while the dialog is 1288 // up. 1289 rVal = true; 1290 } 1291 return rVal; 1292 } 1293 1294 @Override 1295 public void setScrollBarStyle(int style) { 1296 if (style == View.SCROLLBARS_INSIDE_INSET 1297 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1298 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1299 } else { 1300 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1301 } 1302 super.setScrollBarStyle(style); 1303 } 1304 1305 /** 1306 * Specify whether the horizontal scrollbar has overlay style. 1307 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1308 */ 1309 public void setHorizontalScrollbarOverlay(boolean overlay) { 1310 mOverlayHorizontalScrollbar = overlay; 1311 } 1312 1313 /** 1314 * Specify whether the vertical scrollbar has overlay style. 1315 * @param overlay TRUE if vertical scrollbar should have overlay style. 1316 */ 1317 public void setVerticalScrollbarOverlay(boolean overlay) { 1318 mOverlayVerticalScrollbar = overlay; 1319 } 1320 1321 /** 1322 * Return whether horizontal scrollbar has overlay style 1323 * @return TRUE if horizontal scrollbar has overlay style. 1324 */ 1325 public boolean overlayHorizontalScrollbar() { 1326 return mOverlayHorizontalScrollbar; 1327 } 1328 1329 /** 1330 * Return whether vertical scrollbar has overlay style 1331 * @return TRUE if vertical scrollbar has overlay style. 1332 */ 1333 public boolean overlayVerticalScrollbar() { 1334 return mOverlayVerticalScrollbar; 1335 } 1336 1337 /* 1338 * Return the width of the view where the content of WebView should render 1339 * to. 1340 * Note: this can be called from WebCoreThread. 1341 */ 1342 /* package */ int getViewWidth() { 1343 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1344 return getWidth(); 1345 } else { 1346 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1347 } 1348 } 1349 1350 /** 1351 * returns the height of the titlebarview (if any). Does not care about 1352 * scrolling 1353 * @hide 1354 */ 1355 protected int getTitleHeight() { 1356 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1357 } 1358 1359 /** 1360 * Return the amount of the titlebarview (if any) that is visible 1361 * 1362 * @deprecated This method is now obsolete. 1363 */ 1364 public int getVisibleTitleHeight() { 1365 // need to restrict mScrollY due to over scroll 1366 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1367 } 1368 1369 /* 1370 * Return the height of the view where the content of WebView should render 1371 * to. Note that this excludes mTitleBar, if there is one. 1372 * Note: this can be called from WebCoreThread. 1373 */ 1374 /* package */ int getViewHeight() { 1375 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1376 } 1377 1378 private int getViewHeightWithTitle() { 1379 int height = getHeight(); 1380 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1381 height -= getHorizontalScrollbarHeight(); 1382 } 1383 return height; 1384 } 1385 1386 /** 1387 * @return The SSL certificate for the main top-level page or null if 1388 * there is no certificate (the site is not secure). 1389 */ 1390 public SslCertificate getCertificate() { 1391 return mCertificate; 1392 } 1393 1394 /** 1395 * Sets the SSL certificate for the main top-level page. 1396 */ 1397 public void setCertificate(SslCertificate certificate) { 1398 if (DebugFlags.WEB_VIEW) { 1399 Log.v(LOGTAG, "setCertificate=" + certificate); 1400 } 1401 // here, the certificate can be null (if the site is not secure) 1402 mCertificate = certificate; 1403 } 1404 1405 //------------------------------------------------------------------------- 1406 // Methods called by activity 1407 //------------------------------------------------------------------------- 1408 1409 /** 1410 * Save the username and password for a particular host in the WebView's 1411 * internal database. 1412 * @param host The host that required the credentials. 1413 * @param username The username for the given host. 1414 * @param password The password for the given host. 1415 */ 1416 public void savePassword(String host, String username, String password) { 1417 mDatabase.setUsernamePassword(host, username, password); 1418 } 1419 1420 /** 1421 * Set the HTTP authentication credentials for a given host and realm. 1422 * 1423 * @param host The host for the credentials. 1424 * @param realm The realm for the credentials. 1425 * @param username The username for the password. If it is null, it means 1426 * password can't be saved. 1427 * @param password The password 1428 */ 1429 public void setHttpAuthUsernamePassword(String host, String realm, 1430 String username, String password) { 1431 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1432 } 1433 1434 /** 1435 * Retrieve the HTTP authentication username and password for a given 1436 * host & realm pair 1437 * 1438 * @param host The host for which the credentials apply. 1439 * @param realm The realm for which the credentials apply. 1440 * @return String[] if found, String[0] is username, which can be null and 1441 * String[1] is password. Return null if it can't find anything. 1442 */ 1443 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1444 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1445 } 1446 1447 /** 1448 * Remove Find or Select ActionModes, if active. 1449 */ 1450 private void clearActionModes() { 1451 if (mSelectCallback != null) { 1452 mSelectCallback.finish(); 1453 } 1454 if (mFindCallback != null) { 1455 mFindCallback.finish(); 1456 } 1457 } 1458 1459 /** 1460 * Called to clear state when moving from one page to another, or changing 1461 * in some other way that makes elements associated with the current page 1462 * (such as WebTextView or ActionModes) no longer relevant. 1463 */ 1464 private void clearHelpers() { 1465 clearTextEntry(); 1466 clearActionModes(); 1467 dismissFullScreenMode(); 1468 } 1469 1470 /** 1471 * Destroy the internal state of the WebView. This method should be called 1472 * after the WebView has been removed from the view system. No other 1473 * methods may be called on a WebView after destroy. 1474 */ 1475 public void destroy() { 1476 clearHelpers(); 1477 if (mListBoxDialog != null) { 1478 mListBoxDialog.dismiss(); 1479 mListBoxDialog = null; 1480 } 1481 if (mNativeClass != 0) nativeStopGL(); 1482 if (mWebViewCore != null) { 1483 // Set the handlers to null before destroying WebViewCore so no 1484 // more messages will be posted. 1485 mCallbackProxy.setWebViewClient(null); 1486 mCallbackProxy.setWebChromeClient(null); 1487 // Tell WebViewCore to destroy itself 1488 synchronized (this) { 1489 WebViewCore webViewCore = mWebViewCore; 1490 mWebViewCore = null; // prevent using partial webViewCore 1491 webViewCore.destroy(); 1492 } 1493 // Remove any pending messages that might not be serviced yet. 1494 mPrivateHandler.removeCallbacksAndMessages(null); 1495 mCallbackProxy.removeCallbacksAndMessages(null); 1496 // Wake up the WebCore thread just in case it is waiting for a 1497 // JavaScript dialog. 1498 synchronized (mCallbackProxy) { 1499 mCallbackProxy.notify(); 1500 } 1501 } 1502 if (mNativeClass != 0) { 1503 nativeDestroy(); 1504 mNativeClass = 0; 1505 } 1506 } 1507 1508 /** 1509 * Enables platform notifications of data state and proxy changes. 1510 */ 1511 public static void enablePlatformNotifications() { 1512 Network.enablePlatformNotifications(); 1513 } 1514 1515 /** 1516 * If platform notifications are enabled, this should be called 1517 * from the Activity's onPause() or onStop(). 1518 */ 1519 public static void disablePlatformNotifications() { 1520 Network.disablePlatformNotifications(); 1521 } 1522 1523 /** 1524 * Sets JavaScript engine flags. 1525 * 1526 * @param flags JS engine flags in a String 1527 * 1528 * @hide pending API solidification 1529 */ 1530 public void setJsFlags(String flags) { 1531 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1532 } 1533 1534 /** 1535 * Inform WebView of the network state. This is used to set 1536 * the JavaScript property window.navigator.isOnline and 1537 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1538 * @param networkUp boolean indicating if network is available 1539 */ 1540 public void setNetworkAvailable(boolean networkUp) { 1541 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1542 networkUp ? 1 : 0, 0); 1543 } 1544 1545 /** 1546 * Inform WebView about the current network type. 1547 * {@hide} 1548 */ 1549 public void setNetworkType(String type, String subtype) { 1550 Map<String, String> map = new HashMap<String, String>(); 1551 map.put("type", type); 1552 map.put("subtype", subtype); 1553 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1554 } 1555 /** 1556 * Save the state of this WebView used in 1557 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1558 * method no longer stores the display data for this WebView. The previous 1559 * behavior could potentially leak files if {@link #restoreState} was never 1560 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1561 * and restoring the display data. 1562 * @param outState The Bundle to store the WebView state. 1563 * @return The same copy of the back/forward list used to save the state. If 1564 * saveState fails, the returned list will be null. 1565 * @see #savePicture 1566 * @see #restorePicture 1567 */ 1568 public WebBackForwardList saveState(Bundle outState) { 1569 if (outState == null) { 1570 return null; 1571 } 1572 // We grab a copy of the back/forward list because a client of WebView 1573 // may have invalidated the history list by calling clearHistory. 1574 WebBackForwardList list = copyBackForwardList(); 1575 final int currentIndex = list.getCurrentIndex(); 1576 final int size = list.getSize(); 1577 // We should fail saving the state if the list is empty or the index is 1578 // not in a valid range. 1579 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1580 return null; 1581 } 1582 outState.putInt("index", currentIndex); 1583 // FIXME: This should just be a byte[][] instead of ArrayList but 1584 // Parcel.java does not have the code to handle multi-dimensional 1585 // arrays. 1586 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1587 for (int i = 0; i < size; i++) { 1588 WebHistoryItem item = list.getItemAtIndex(i); 1589 if (null == item) { 1590 // FIXME: this shouldn't happen 1591 // need to determine how item got set to null 1592 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1593 return null; 1594 } 1595 byte[] data = item.getFlattenedData(); 1596 if (data == null) { 1597 // It would be very odd to not have any data for a given history 1598 // item. And we will fail to rebuild the history list without 1599 // flattened data. 1600 return null; 1601 } 1602 history.add(data); 1603 } 1604 outState.putSerializable("history", history); 1605 if (mCertificate != null) { 1606 outState.putBundle("certificate", 1607 SslCertificate.saveState(mCertificate)); 1608 } 1609 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1610 mZoomManager.saveZoomState(outState); 1611 return list; 1612 } 1613 1614 /** 1615 * Save the current display data to the Bundle given. Used in conjunction 1616 * with {@link #saveState}. 1617 * @param b A Bundle to store the display data. 1618 * @param dest The file to store the serialized picture data. Will be 1619 * overwritten with this WebView's picture data. 1620 * @return True if the picture was successfully saved. 1621 */ 1622 public boolean savePicture(Bundle b, final File dest) { 1623 if (dest == null || b == null) { 1624 return false; 1625 } 1626 final Picture p = capturePicture(); 1627 // Use a temporary file while writing to ensure the destination file 1628 // contains valid data. 1629 final File temp = new File(dest.getPath() + ".writing"); 1630 new Thread(new Runnable() { 1631 public void run() { 1632 FileOutputStream out = null; 1633 try { 1634 out = new FileOutputStream(temp); 1635 p.writeToStream(out); 1636 // Writing the picture succeeded, rename the temporary file 1637 // to the destination. 1638 temp.renameTo(dest); 1639 } catch (Exception e) { 1640 // too late to do anything about it. 1641 } finally { 1642 if (out != null) { 1643 try { 1644 out.close(); 1645 } catch (Exception e) { 1646 // Can't do anything about that 1647 } 1648 } 1649 temp.delete(); 1650 } 1651 } 1652 }).start(); 1653 // now update the bundle 1654 b.putInt("scrollX", mScrollX); 1655 b.putInt("scrollY", mScrollY); 1656 mZoomManager.saveZoomState(b); 1657 return true; 1658 } 1659 1660 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1661 int sx = b.getInt("scrollX", 0); 1662 int sy = b.getInt("scrollY", 0); 1663 1664 mDrawHistory = true; 1665 mHistoryPicture = p; 1666 1667 mScrollX = sx; 1668 mScrollY = sy; 1669 mZoomManager.restoreZoomState(b); 1670 final float scale = mZoomManager.getScale(); 1671 mHistoryWidth = Math.round(p.getWidth() * scale); 1672 mHistoryHeight = Math.round(p.getHeight() * scale); 1673 1674 invalidate(); 1675 } 1676 1677 /** 1678 * Restore the display data that was save in {@link #savePicture}. Used in 1679 * conjunction with {@link #restoreState}. 1680 * @param b A Bundle containing the saved display data. 1681 * @param src The file where the picture data was stored. 1682 * @return True if the picture was successfully restored. 1683 */ 1684 public boolean restorePicture(Bundle b, File src) { 1685 if (src == null || b == null) { 1686 return false; 1687 } 1688 if (!src.exists()) { 1689 return false; 1690 } 1691 try { 1692 final FileInputStream in = new FileInputStream(src); 1693 final Bundle copy = new Bundle(b); 1694 new Thread(new Runnable() { 1695 public void run() { 1696 try { 1697 final Picture p = Picture.createFromStream(in); 1698 if (p != null) { 1699 // Post a runnable on the main thread to update the 1700 // history picture fields. 1701 mPrivateHandler.post(new Runnable() { 1702 public void run() { 1703 restoreHistoryPictureFields(p, copy); 1704 } 1705 }); 1706 } 1707 } finally { 1708 try { 1709 in.close(); 1710 } catch (Exception e) { 1711 // Nothing we can do now. 1712 } 1713 } 1714 } 1715 }).start(); 1716 } catch (FileNotFoundException e){ 1717 e.printStackTrace(); 1718 } 1719 return true; 1720 } 1721 1722 /** 1723 * Restore the state of this WebView from the given map used in 1724 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1725 * be called to restore the state of the WebView before using the object. If 1726 * it is called after the WebView has had a chance to build state (load 1727 * pages, create a back/forward list, etc.) there may be undesirable 1728 * side-effects. Please note that this method no longer restores the 1729 * display data for this WebView. See {@link #savePicture} and {@link 1730 * #restorePicture} for saving and restoring the display data. 1731 * @param inState The incoming Bundle of state. 1732 * @return The restored back/forward list or null if restoreState failed. 1733 * @see #savePicture 1734 * @see #restorePicture 1735 */ 1736 public WebBackForwardList restoreState(Bundle inState) { 1737 WebBackForwardList returnList = null; 1738 if (inState == null) { 1739 return returnList; 1740 } 1741 if (inState.containsKey("index") && inState.containsKey("history")) { 1742 mCertificate = SslCertificate.restoreState( 1743 inState.getBundle("certificate")); 1744 1745 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1746 final int index = inState.getInt("index"); 1747 // We can't use a clone of the list because we need to modify the 1748 // shared copy, so synchronize instead to prevent concurrent 1749 // modifications. 1750 synchronized (list) { 1751 final List<byte[]> history = 1752 (List<byte[]>) inState.getSerializable("history"); 1753 final int size = history.size(); 1754 // Check the index bounds so we don't crash in native code while 1755 // restoring the history index. 1756 if (index < 0 || index >= size) { 1757 return null; 1758 } 1759 for (int i = 0; i < size; i++) { 1760 byte[] data = history.remove(0); 1761 if (data == null) { 1762 // If we somehow have null data, we cannot reconstruct 1763 // the item and thus our history list cannot be rebuilt. 1764 return null; 1765 } 1766 WebHistoryItem item = new WebHistoryItem(data); 1767 list.addHistoryItem(item); 1768 } 1769 // Grab the most recent copy to return to the caller. 1770 returnList = copyBackForwardList(); 1771 // Update the copy to have the correct index. 1772 returnList.setCurrentIndex(index); 1773 } 1774 // Restore private browsing setting. 1775 if (inState.getBoolean("privateBrowsingEnabled")) { 1776 getSettings().setPrivateBrowsingEnabled(true); 1777 } 1778 mZoomManager.restoreZoomState(inState); 1779 // Remove all pending messages because we are restoring previous 1780 // state. 1781 mWebViewCore.removeMessages(); 1782 // Send a restore state message. 1783 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1784 } 1785 return returnList; 1786 } 1787 1788 /** 1789 * Load the given url with the extra headers. 1790 * @param url The url of the resource to load. 1791 * @param extraHeaders The extra headers sent with this url. This should not 1792 * include the common headers like "user-agent". If it does, it 1793 * will be replaced by the intrinsic value of the WebView. 1794 */ 1795 public void loadUrl(String url, Map<String, String> extraHeaders) { 1796 switchOutDrawHistory(); 1797 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1798 arg.mUrl = url; 1799 arg.mExtraHeaders = extraHeaders; 1800 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1801 clearHelpers(); 1802 } 1803 1804 /** 1805 * Load the given url. 1806 * @param url The url of the resource to load. 1807 */ 1808 public void loadUrl(String url) { 1809 if (url == null) { 1810 return; 1811 } 1812 loadUrl(url, null); 1813 } 1814 1815 /** 1816 * Load the url with postData using "POST" method into the WebView. If url 1817 * is not a network url, it will be loaded with {link 1818 * {@link #loadUrl(String)} instead. 1819 * 1820 * @param url The url of the resource to load. 1821 * @param postData The data will be passed to "POST" request. 1822 */ 1823 public void postUrl(String url, byte[] postData) { 1824 if (URLUtil.isNetworkUrl(url)) { 1825 switchOutDrawHistory(); 1826 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1827 arg.mUrl = url; 1828 arg.mPostData = postData; 1829 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1830 clearHelpers(); 1831 } else { 1832 loadUrl(url); 1833 } 1834 } 1835 1836 /** 1837 * Load the given data into the WebView. This will load the data into 1838 * WebView using the data: scheme. Content loaded through this mechanism 1839 * does not have the ability to load content from the network. 1840 * @param data A String of data in the given encoding. The date must 1841 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1842 * %27, %3f respectively. 1843 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1844 * @param encoding The encoding of the data. i.e. utf-8, base64 1845 */ 1846 public void loadData(String data, String mimeType, String encoding) { 1847 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1848 } 1849 1850 /** 1851 * Load the given data into the WebView, use the provided URL as the base 1852 * URL for the content. The base URL is the URL that represents the page 1853 * that is loaded through this interface. As such, it is used to resolve any 1854 * relative URLs. The historyUrl is used for the history entry. 1855 * <p> 1856 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1857 * files through "file:///android_asset/" for the sub resources is more 1858 * restricted. If you provide null or empty string as baseUrl, you won't be 1859 * able to access asset files. If the baseUrl is anything other than 1860 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1861 * sub resources. 1862 * 1863 * @param baseUrl Url to resolve relative paths with, if null defaults to 1864 * "about:blank" 1865 * @param data A String of data in the given encoding. 1866 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1867 * defaults to "text/html" 1868 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1869 * @param historyUrl URL to use as the history entry. Can be null. 1870 */ 1871 public void loadDataWithBaseURL(String baseUrl, String data, 1872 String mimeType, String encoding, String historyUrl) { 1873 1874 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1875 loadData(data, mimeType, encoding); 1876 return; 1877 } 1878 switchOutDrawHistory(); 1879 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1880 arg.mBaseUrl = baseUrl; 1881 arg.mData = data; 1882 arg.mMimeType = mimeType; 1883 arg.mEncoding = encoding; 1884 arg.mHistoryUrl = historyUrl; 1885 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1886 clearHelpers(); 1887 } 1888 1889 /** 1890 * Saves the current view as a web archive. 1891 * 1892 * @param filename The filename where the archive should be placed. 1893 */ 1894 public void saveWebArchive(String filename) { 1895 saveWebArchive(filename, false, null); 1896 } 1897 1898 /* package */ static class SaveWebArchiveMessage { 1899 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1900 mBasename = basename; 1901 mAutoname = autoname; 1902 mCallback = callback; 1903 } 1904 1905 /* package */ final String mBasename; 1906 /* package */ final boolean mAutoname; 1907 /* package */ final ValueCallback<String> mCallback; 1908 /* package */ String mResultFile; 1909 } 1910 1911 /** 1912 * Saves the current view as a web archive. 1913 * 1914 * @param basename The filename where the archive should be placed. 1915 * @param autoname If false, takes basename to be a file. If true, basename 1916 * is assumed to be a directory in which a filename will be 1917 * chosen according to the url of the current page. 1918 * @param callback Called after the web archive has been saved. The 1919 * parameter for onReceiveValue will either be the filename 1920 * under which the file was saved, or null if saving the 1921 * file failed. 1922 */ 1923 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1924 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1925 new SaveWebArchiveMessage(basename, autoname, callback)); 1926 } 1927 1928 /** 1929 * Stop the current load. 1930 */ 1931 public void stopLoading() { 1932 // TODO: should we clear all the messages in the queue before sending 1933 // STOP_LOADING? 1934 switchOutDrawHistory(); 1935 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1936 } 1937 1938 /** 1939 * Reload the current url. 1940 */ 1941 public void reload() { 1942 clearHelpers(); 1943 switchOutDrawHistory(); 1944 mWebViewCore.sendMessage(EventHub.RELOAD); 1945 } 1946 1947 /** 1948 * Return true if this WebView has a back history item. 1949 * @return True iff this WebView has a back history item. 1950 */ 1951 public boolean canGoBack() { 1952 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1953 synchronized (l) { 1954 if (l.getClearPending()) { 1955 return false; 1956 } else { 1957 return l.getCurrentIndex() > 0; 1958 } 1959 } 1960 } 1961 1962 /** 1963 * Go back in the history of this WebView. 1964 */ 1965 public void goBack() { 1966 goBackOrForward(-1); 1967 } 1968 1969 /** 1970 * Return true if this WebView has a forward history item. 1971 * @return True iff this Webview has a forward history item. 1972 */ 1973 public boolean canGoForward() { 1974 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1975 synchronized (l) { 1976 if (l.getClearPending()) { 1977 return false; 1978 } else { 1979 return l.getCurrentIndex() < l.getSize() - 1; 1980 } 1981 } 1982 } 1983 1984 /** 1985 * Go forward in the history of this WebView. 1986 */ 1987 public void goForward() { 1988 goBackOrForward(1); 1989 } 1990 1991 /** 1992 * Return true if the page can go back or forward the given 1993 * number of steps. 1994 * @param steps The negative or positive number of steps to move the 1995 * history. 1996 */ 1997 public boolean canGoBackOrForward(int steps) { 1998 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1999 synchronized (l) { 2000 if (l.getClearPending()) { 2001 return false; 2002 } else { 2003 int newIndex = l.getCurrentIndex() + steps; 2004 return newIndex >= 0 && newIndex < l.getSize(); 2005 } 2006 } 2007 } 2008 2009 /** 2010 * Go to the history item that is the number of steps away from 2011 * the current item. Steps is negative if backward and positive 2012 * if forward. 2013 * @param steps The number of steps to take back or forward in the back 2014 * forward list. 2015 */ 2016 public void goBackOrForward(int steps) { 2017 goBackOrForward(steps, false); 2018 } 2019 2020 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2021 if (steps != 0) { 2022 clearHelpers(); 2023 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2024 ignoreSnapshot ? 1 : 0); 2025 } 2026 } 2027 2028 /** 2029 * Returns true if private browsing is enabled in this WebView. 2030 */ 2031 public boolean isPrivateBrowsingEnabled() { 2032 return getSettings().isPrivateBrowsingEnabled(); 2033 } 2034 2035 private void startPrivateBrowsing() { 2036 getSettings().setPrivateBrowsingEnabled(true); 2037 } 2038 2039 private boolean extendScroll(int y) { 2040 int finalY = mScroller.getFinalY(); 2041 int newY = pinLocY(finalY + y); 2042 if (newY == finalY) return false; 2043 mScroller.setFinalY(newY); 2044 mScroller.extendDuration(computeDuration(0, y)); 2045 return true; 2046 } 2047 2048 /** 2049 * Scroll the contents of the view up by half the view size 2050 * @param top true to jump to the top of the page 2051 * @return true if the page was scrolled 2052 */ 2053 public boolean pageUp(boolean top) { 2054 if (mNativeClass == 0) { 2055 return false; 2056 } 2057 nativeClearCursor(); // start next trackball movement from page edge 2058 if (top) { 2059 // go to the top of the document 2060 return pinScrollTo(mScrollX, 0, true, 0); 2061 } 2062 // Page up 2063 int h = getHeight(); 2064 int y; 2065 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2066 y = -h + PAGE_SCROLL_OVERLAP; 2067 } else { 2068 y = -h / 2; 2069 } 2070 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2071 : extendScroll(y); 2072 } 2073 2074 /** 2075 * Scroll the contents of the view down by half the page size 2076 * @param bottom true to jump to bottom of page 2077 * @return true if the page was scrolled 2078 */ 2079 public boolean pageDown(boolean bottom) { 2080 if (mNativeClass == 0) { 2081 return false; 2082 } 2083 nativeClearCursor(); // start next trackball movement from page edge 2084 if (bottom) { 2085 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2086 } 2087 // Page down. 2088 int h = getHeight(); 2089 int y; 2090 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2091 y = h - PAGE_SCROLL_OVERLAP; 2092 } else { 2093 y = h / 2; 2094 } 2095 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2096 : extendScroll(y); 2097 } 2098 2099 /** 2100 * Clear the view so that onDraw() will draw nothing but white background, 2101 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2102 */ 2103 public void clearView() { 2104 mContentWidth = 0; 2105 mContentHeight = 0; 2106 setBaseLayer(0, null, false, false); 2107 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2108 } 2109 2110 /** 2111 * Return a new picture that captures the current display of the webview. 2112 * This is a copy of the display, and will be unaffected if the webview 2113 * later loads a different URL. 2114 * 2115 * @return a picture containing the current contents of the view. Note this 2116 * picture is of the entire document, and is not restricted to the 2117 * bounds of the view. 2118 */ 2119 public Picture capturePicture() { 2120 if (mNativeClass == 0) return null; 2121 Picture result = new Picture(); 2122 nativeCopyBaseContentToPicture(result); 2123 return result; 2124 } 2125 2126 /** 2127 * Return true if the browser is displaying a TextView for text input. 2128 */ 2129 private boolean inEditingMode() { 2130 return mWebTextView != null && mWebTextView.getParent() != null; 2131 } 2132 2133 /** 2134 * Remove the WebTextView. 2135 */ 2136 private void clearTextEntry() { 2137 if (inEditingMode()) { 2138 mWebTextView.remove(); 2139 } else { 2140 // The keyboard may be open with the WebView as the served view 2141 hideSoftKeyboard(); 2142 } 2143 } 2144 2145 /** 2146 * Return the current scale of the WebView 2147 * @return The current scale. 2148 */ 2149 public float getScale() { 2150 return mZoomManager.getScale(); 2151 } 2152 2153 /** 2154 * Set the initial scale for the WebView. 0 means default. If 2155 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2156 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2157 * WebView starts will this value as initial scale. 2158 * 2159 * @param scaleInPercent The initial scale in percent. 2160 */ 2161 public void setInitialScale(int scaleInPercent) { 2162 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2163 } 2164 2165 /** 2166 * Invoke the graphical zoom picker widget for this WebView. This will 2167 * result in the zoom widget appearing on the screen to control the zoom 2168 * level of this WebView. 2169 */ 2170 public void invokeZoomPicker() { 2171 if (!getSettings().supportZoom()) { 2172 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2173 return; 2174 } 2175 clearHelpers(); 2176 mZoomManager.invokeZoomPicker(); 2177 } 2178 2179 /** 2180 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2181 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2182 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2183 * anchor does not have a url or if it is a JavaScript url, the type will 2184 * be UNKNOWN_TYPE and the url has to be retrieved through 2185 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2186 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2187 * the "extra" field. A type of 2188 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2189 * a child node. If a phone number is found, the HitTestResult type is set 2190 * to PHONE_TYPE and the phone number is set in the "extra" field of 2191 * HitTestResult. If a map address is found, the HitTestResult type is set 2192 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2193 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2194 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2195 * HitTestResult type is set to UNKNOWN_TYPE. 2196 */ 2197 public HitTestResult getHitTestResult() { 2198 return hitTestResult(mInitialHitTestResult); 2199 } 2200 2201 private HitTestResult hitTestResult(HitTestResult fallback) { 2202 if (mNativeClass == 0) { 2203 return null; 2204 } 2205 2206 HitTestResult result = new HitTestResult(); 2207 if (nativeHasCursorNode()) { 2208 if (nativeCursorIsTextInput()) { 2209 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2210 } else { 2211 String text = nativeCursorText(); 2212 if (text != null) { 2213 if (text.startsWith(SCHEME_TEL)) { 2214 result.setType(HitTestResult.PHONE_TYPE); 2215 result.setExtra(text.substring(SCHEME_TEL.length())); 2216 } else if (text.startsWith(SCHEME_MAILTO)) { 2217 result.setType(HitTestResult.EMAIL_TYPE); 2218 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2219 } else if (text.startsWith(SCHEME_GEO)) { 2220 result.setType(HitTestResult.GEO_TYPE); 2221 result.setExtra(URLDecoder.decode(text 2222 .substring(SCHEME_GEO.length()))); 2223 } else if (nativeCursorIsAnchor()) { 2224 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2225 result.setExtra(text); 2226 } 2227 } 2228 } 2229 } else if (fallback != null) { 2230 /* If webkit causes a rebuild while the long press is in progress, 2231 * the cursor node may be reset, even if it is still around. This 2232 * uses the cursor node saved when the touch began. Since the 2233 * nativeImageURI below only changes the result if it is successful, 2234 * this uses the data beneath the touch if available or the original 2235 * tap data otherwise. 2236 */ 2237 Log.v(LOGTAG, "hitTestResult use fallback"); 2238 result = fallback; 2239 } 2240 int type = result.getType(); 2241 if (type == HitTestResult.UNKNOWN_TYPE 2242 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2243 // Now check to see if it is an image. 2244 int contentX = viewToContentX(mLastTouchX + mScrollX); 2245 int contentY = viewToContentY(mLastTouchY + mScrollY); 2246 String text = nativeImageURI(contentX, contentY); 2247 if (text != null) { 2248 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2249 HitTestResult.IMAGE_TYPE : 2250 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2251 result.setExtra(text); 2252 } 2253 } 2254 return result; 2255 } 2256 2257 // Called by JNI when the DOM has changed the focus. Clear the focus so 2258 // that new keys will go to the newly focused field 2259 private void domChangedFocus() { 2260 if (inEditingMode()) { 2261 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2262 } 2263 } 2264 /** 2265 * Request the anchor or image element URL at the last tapped point. 2266 * If hrefMsg is null, this method returns immediately and does not 2267 * dispatch hrefMsg to its target. If the tapped point hits an image, 2268 * an anchor, or an image in an anchor, the message associates 2269 * strings in named keys in its data. The value paired with the key 2270 * may be an empty string. 2271 * 2272 * @param hrefMsg This message will be dispatched with the result of the 2273 * request. The message data contains three keys: 2274 * - "url" returns the anchor's href attribute. 2275 * - "title" returns the anchor's text. 2276 * - "src" returns the image's src attribute. 2277 */ 2278 public void requestFocusNodeHref(Message hrefMsg) { 2279 if (hrefMsg == null) { 2280 return; 2281 } 2282 int contentX = viewToContentX(mLastTouchX + mScrollX); 2283 int contentY = viewToContentY(mLastTouchY + mScrollY); 2284 if (nativeHasCursorNode()) { 2285 Rect cursorBounds = nativeGetCursorRingBounds(); 2286 if (!cursorBounds.contains(contentX, contentY)) { 2287 int slop = viewToContentDimension(mNavSlop); 2288 cursorBounds.inset(-slop, -slop); 2289 if (cursorBounds.contains(contentX, contentY)) { 2290 contentX = (int) cursorBounds.centerX(); 2291 contentY = (int) cursorBounds.centerY(); 2292 } 2293 } 2294 } 2295 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2296 contentX, contentY, hrefMsg); 2297 } 2298 2299 /** 2300 * Request the url of the image last touched by the user. msg will be sent 2301 * to its target with a String representing the url as its object. 2302 * 2303 * @param msg This message will be dispatched with the result of the request 2304 * as the data member with "url" as key. The result can be null. 2305 */ 2306 public void requestImageRef(Message msg) { 2307 if (0 == mNativeClass) return; // client isn't initialized 2308 int contentX = viewToContentX(mLastTouchX + mScrollX); 2309 int contentY = viewToContentY(mLastTouchY + mScrollY); 2310 String ref = nativeImageURI(contentX, contentY); 2311 Bundle data = msg.getData(); 2312 data.putString("url", ref); 2313 msg.setData(data); 2314 msg.sendToTarget(); 2315 } 2316 2317 static int pinLoc(int x, int viewMax, int docMax) { 2318// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2319 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2320 // pin the short document to the top/left of the screen 2321 x = 0; 2322// Log.d(LOGTAG, "--- center " + x); 2323 } else if (x < 0) { 2324 x = 0; 2325// Log.d(LOGTAG, "--- zero"); 2326 } else if (x + viewMax > docMax) { 2327 x = docMax - viewMax; 2328// Log.d(LOGTAG, "--- pin " + x); 2329 } 2330 return x; 2331 } 2332 2333 // Expects x in view coordinates 2334 int pinLocX(int x) { 2335 if (mInOverScrollMode) return x; 2336 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2337 } 2338 2339 // Expects y in view coordinates 2340 int pinLocY(int y) { 2341 if (mInOverScrollMode) return y; 2342 return pinLoc(y, getViewHeightWithTitle(), 2343 computeRealVerticalScrollRange() + getTitleHeight()); 2344 } 2345 2346 /** 2347 * A title bar which is embedded in this WebView, and scrolls along with it 2348 * vertically, but not horizontally. 2349 */ 2350 private View mTitleBar; 2351 2352 /** 2353 * the title bar rendering gravity 2354 */ 2355 private int mTitleGravity; 2356 2357 /** 2358 * Add or remove a title bar to be embedded into the WebView, and scroll 2359 * along with it vertically, while remaining in view horizontally. Pass 2360 * null to remove the title bar from the WebView, and return to drawing 2361 * the WebView normally without translating to account for the title bar. 2362 * @hide 2363 */ 2364 public void setEmbeddedTitleBar(View v) { 2365 if (mTitleBar == v) return; 2366 if (mTitleBar != null) { 2367 removeView(mTitleBar); 2368 } 2369 if (null != v) { 2370 addView(v, new AbsoluteLayout.LayoutParams( 2371 ViewGroup.LayoutParams.MATCH_PARENT, 2372 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2373 } 2374 mTitleBar = v; 2375 } 2376 2377 /** 2378 * Set where to render the embedded title bar 2379 * NO_GRAVITY at the top of the page 2380 * TOP at the top of the screen 2381 * @hide 2382 */ 2383 public void setTitleBarGravity(int gravity) { 2384 mTitleGravity = gravity; 2385 } 2386 2387 /** 2388 * Given a distance in view space, convert it to content space. Note: this 2389 * does not reflect translation, just scaling, so this should not be called 2390 * with coordinates, but should be called for dimensions like width or 2391 * height. 2392 */ 2393 private int viewToContentDimension(int d) { 2394 return Math.round(d * mZoomManager.getInvScale()); 2395 } 2396 2397 /** 2398 * Given an x coordinate in view space, convert it to content space. Also 2399 * may be used for absolute heights (such as for the WebTextView's 2400 * textSize, which is unaffected by the height of the title bar). 2401 */ 2402 /*package*/ int viewToContentX(int x) { 2403 return viewToContentDimension(x); 2404 } 2405 2406 /** 2407 * Given a y coordinate in view space, convert it to content space. 2408 * Takes into account the height of the title bar if there is one 2409 * embedded into the WebView. 2410 */ 2411 /*package*/ int viewToContentY(int y) { 2412 return viewToContentDimension(y - getTitleHeight()); 2413 } 2414 2415 /** 2416 * Given a x coordinate in view space, convert it to content space. 2417 * Returns the result as a float. 2418 */ 2419 private float viewToContentXf(int x) { 2420 return x * mZoomManager.getInvScale(); 2421 } 2422 2423 /** 2424 * Given a y coordinate in view space, convert it to content space. 2425 * Takes into account the height of the title bar if there is one 2426 * embedded into the WebView. Returns the result as a float. 2427 */ 2428 private float viewToContentYf(int y) { 2429 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2430 } 2431 2432 /** 2433 * Given a distance in content space, convert it to view space. Note: this 2434 * does not reflect translation, just scaling, so this should not be called 2435 * with coordinates, but should be called for dimensions like width or 2436 * height. 2437 */ 2438 /*package*/ int contentToViewDimension(int d) { 2439 return Math.round(d * mZoomManager.getScale()); 2440 } 2441 2442 /** 2443 * Given an x coordinate in content space, convert it to view 2444 * space. 2445 */ 2446 /*package*/ int contentToViewX(int x) { 2447 return contentToViewDimension(x); 2448 } 2449 2450 /** 2451 * Given a y coordinate in content space, convert it to view 2452 * space. Takes into account the height of the title bar. 2453 */ 2454 /*package*/ int contentToViewY(int y) { 2455 return contentToViewDimension(y) + getTitleHeight(); 2456 } 2457 2458 private Rect contentToViewRect(Rect x) { 2459 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2460 contentToViewX(x.right), contentToViewY(x.bottom)); 2461 } 2462 2463 /* To invalidate a rectangle in content coordinates, we need to transform 2464 the rect into view coordinates, so we can then call invalidate(...). 2465 2466 Normally, we would just call contentToView[XY](...), which eventually 2467 calls Math.round(coordinate * mActualScale). However, for invalidates, 2468 we need to account for the slop that occurs with antialiasing. To 2469 address that, we are a little more liberal in the size of the rect that 2470 we invalidate. 2471 2472 This liberal calculation calls floor() for the top/left, and ceil() for 2473 the bottom/right coordinates. This catches the possible extra pixels of 2474 antialiasing that we might have missed with just round(). 2475 */ 2476 2477 // Called by JNI to invalidate the View, given rectangle coordinates in 2478 // content space 2479 private void viewInvalidate(int l, int t, int r, int b) { 2480 final float scale = mZoomManager.getScale(); 2481 final int dy = getTitleHeight(); 2482 invalidate((int)Math.floor(l * scale), 2483 (int)Math.floor(t * scale) + dy, 2484 (int)Math.ceil(r * scale), 2485 (int)Math.ceil(b * scale) + dy); 2486 } 2487 2488 // Called by JNI to invalidate the View after a delay, given rectangle 2489 // coordinates in content space 2490 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2491 final float scale = mZoomManager.getScale(); 2492 final int dy = getTitleHeight(); 2493 postInvalidateDelayed(delay, 2494 (int)Math.floor(l * scale), 2495 (int)Math.floor(t * scale) + dy, 2496 (int)Math.ceil(r * scale), 2497 (int)Math.ceil(b * scale) + dy); 2498 } 2499 2500 private void invalidateContentRect(Rect r) { 2501 viewInvalidate(r.left, r.top, r.right, r.bottom); 2502 } 2503 2504 // stop the scroll animation, and don't let a subsequent fling add 2505 // to the existing velocity 2506 private void abortAnimation() { 2507 mScroller.abortAnimation(); 2508 mLastVelocity = 0; 2509 } 2510 2511 /* call from webcoreview.draw(), so we're still executing in the UI thread 2512 */ 2513 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2514 2515 // premature data from webkit, ignore 2516 if ((w | h) == 0) { 2517 return; 2518 } 2519 2520 // don't abort a scroll animation if we didn't change anything 2521 if (mContentWidth != w || mContentHeight != h) { 2522 // record new dimensions 2523 mContentWidth = w; 2524 mContentHeight = h; 2525 // If history Picture is drawn, don't update scroll. They will be 2526 // updated when we get out of that mode. 2527 if (!mDrawHistory) { 2528 // repin our scroll, taking into account the new content size 2529 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2530 if (!mScroller.isFinished()) { 2531 // We are in the middle of a scroll. Repin the final scroll 2532 // position. 2533 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2534 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2535 } 2536 } 2537 } 2538 contentSizeChanged(updateLayout); 2539 } 2540 2541 // Used to avoid sending many visible rect messages. 2542 private Rect mLastVisibleRectSent; 2543 private Rect mLastGlobalRect; 2544 2545 Rect sendOurVisibleRect() { 2546 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2547 Rect rect = new Rect(); 2548 calcOurContentVisibleRect(rect); 2549 // Rect.equals() checks for null input. 2550 if (!rect.equals(mLastVisibleRectSent)) { 2551 Point pos = new Point(rect.left, rect.top); 2552 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2553 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2554 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2555 mLastVisibleRectSent = rect; 2556 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2557 } 2558 Rect globalRect = new Rect(); 2559 if (getGlobalVisibleRect(globalRect) 2560 && !globalRect.equals(mLastGlobalRect)) { 2561 if (DebugFlags.WEB_VIEW) { 2562 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2563 + globalRect.top + ",r=" + globalRect.right + ",b=" 2564 + globalRect.bottom); 2565 } 2566 // TODO: the global offset is only used by windowRect() 2567 // in ChromeClientAndroid ; other clients such as touch 2568 // and mouse events could return view + screen relative points. 2569 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2570 mLastGlobalRect = globalRect; 2571 } 2572 return rect; 2573 } 2574 2575 // Sets r to be the visible rectangle of our webview in view coordinates 2576 private void calcOurVisibleRect(Rect r) { 2577 Point p = new Point(); 2578 getGlobalVisibleRect(r, p); 2579 r.offset(-p.x, -p.y); 2580 } 2581 2582 // Sets r to be our visible rectangle in content coordinates 2583 private void calcOurContentVisibleRect(Rect r) { 2584 calcOurVisibleRect(r); 2585 r.left = viewToContentX(r.left); 2586 // viewToContentY will remove the total height of the title bar. Add 2587 // the visible height back in to account for the fact that if the title 2588 // bar is partially visible, the part of the visible rect which is 2589 // displaying our content is displaced by that amount. 2590 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2591 r.right = viewToContentX(r.right); 2592 r.bottom = viewToContentY(r.bottom); 2593 } 2594 2595 // Sets r to be our visible rectangle in content coordinates. We use this 2596 // method on the native side to compute the position of the fixed layers. 2597 // Uses floating coordinates (necessary to correctly place elements when 2598 // the scale factor is not 1) 2599 private void calcOurContentVisibleRectF(RectF r) { 2600 Rect ri = new Rect(0,0,0,0); 2601 calcOurVisibleRect(ri); 2602 r.left = viewToContentXf(ri.left); 2603 // viewToContentY will remove the total height of the title bar. Add 2604 // the visible height back in to account for the fact that if the title 2605 // bar is partially visible, the part of the visible rect which is 2606 // displaying our content is displaced by that amount. 2607 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2608 r.right = viewToContentXf(ri.right); 2609 r.bottom = viewToContentYf(ri.bottom); 2610 } 2611 2612 static class ViewSizeData { 2613 int mWidth; 2614 int mHeight; 2615 float mHeightWidthRatio; 2616 int mActualViewHeight; 2617 int mTextWrapWidth; 2618 int mAnchorX; 2619 int mAnchorY; 2620 float mScale; 2621 boolean mIgnoreHeight; 2622 } 2623 2624 /** 2625 * Compute unzoomed width and height, and if they differ from the last 2626 * values we sent, send them to webkit (to be used as new viewport) 2627 * 2628 * @param force ensures that the message is sent to webkit even if the width 2629 * or height has not changed since the last message 2630 * 2631 * @return true if new values were sent 2632 */ 2633 boolean sendViewSizeZoom(boolean force) { 2634 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2635 2636 int viewWidth = getViewWidth(); 2637 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2638 // This height could be fixed and be different from actual visible height. 2639 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2640 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2641 // Make the ratio more accurate than (newHeight / newWidth), since the 2642 // latter both are calculated and rounded. 2643 float heightWidthRatio = (float) viewHeight / viewWidth; 2644 /* 2645 * Because the native side may have already done a layout before the 2646 * View system was able to measure us, we have to send a height of 0 to 2647 * remove excess whitespace when we grow our width. This will trigger a 2648 * layout and a change in content size. This content size change will 2649 * mean that contentSizeChanged will either call this method directly or 2650 * indirectly from onSizeChanged. 2651 */ 2652 if (newWidth > mLastWidthSent && mWrapContent) { 2653 newHeight = 0; 2654 heightWidthRatio = 0; 2655 } 2656 // Actual visible content height. 2657 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2658 // Avoid sending another message if the dimensions have not changed. 2659 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2660 actualViewHeight != mLastActualHeightSent) { 2661 ViewSizeData data = new ViewSizeData(); 2662 data.mWidth = newWidth; 2663 data.mHeight = newHeight; 2664 data.mHeightWidthRatio = heightWidthRatio; 2665 data.mActualViewHeight = actualViewHeight; 2666 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2667 data.mScale = mZoomManager.getScale(); 2668 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2669 && !mHeightCanMeasure; 2670 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2671 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2672 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2673 mLastWidthSent = newWidth; 2674 mLastHeightSent = newHeight; 2675 mLastActualHeightSent = actualViewHeight; 2676 mZoomManager.clearDocumentAnchor(); 2677 return true; 2678 } 2679 return false; 2680 } 2681 2682 private int computeRealHorizontalScrollRange() { 2683 if (mDrawHistory) { 2684 return mHistoryWidth; 2685 } else { 2686 // to avoid rounding error caused unnecessary scrollbar, use floor 2687 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2688 } 2689 } 2690 2691 @Override 2692 protected int computeHorizontalScrollRange() { 2693 int range = computeRealHorizontalScrollRange(); 2694 2695 // Adjust reported range if overscrolled to compress the scroll bars 2696 final int scrollX = mScrollX; 2697 final int overscrollRight = computeMaxScrollX(); 2698 if (scrollX < 0) { 2699 range -= scrollX; 2700 } else if (scrollX > overscrollRight) { 2701 range += scrollX - overscrollRight; 2702 } 2703 2704 return range; 2705 } 2706 2707 @Override 2708 protected int computeHorizontalScrollOffset() { 2709 return Math.max(mScrollX, 0); 2710 } 2711 2712 private int computeRealVerticalScrollRange() { 2713 if (mDrawHistory) { 2714 return mHistoryHeight; 2715 } else { 2716 // to avoid rounding error caused unnecessary scrollbar, use floor 2717 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2718 } 2719 } 2720 2721 @Override 2722 protected int computeVerticalScrollRange() { 2723 int range = computeRealVerticalScrollRange(); 2724 2725 // Adjust reported range if overscrolled to compress the scroll bars 2726 final int scrollY = mScrollY; 2727 final int overscrollBottom = computeMaxScrollY(); 2728 if (scrollY < 0) { 2729 range -= scrollY; 2730 } else if (scrollY > overscrollBottom) { 2731 range += scrollY - overscrollBottom; 2732 } 2733 2734 return range; 2735 } 2736 2737 @Override 2738 protected int computeVerticalScrollOffset() { 2739 return Math.max(mScrollY - getTitleHeight(), 0); 2740 } 2741 2742 @Override 2743 protected int computeVerticalScrollExtent() { 2744 return getViewHeight(); 2745 } 2746 2747 /** @hide */ 2748 @Override 2749 protected void onDrawVerticalScrollBar(Canvas canvas, 2750 Drawable scrollBar, 2751 int l, int t, int r, int b) { 2752 if (mScrollY < 0) { 2753 t -= mScrollY; 2754 } 2755 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2756 scrollBar.draw(canvas); 2757 } 2758 2759 @Override 2760 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2761 boolean clampedY) { 2762 // Special-case layer scrolling so that we do not trigger normal scroll 2763 // updating. 2764 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2765 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2766 mScrollingLayerRect.left = scrollX; 2767 mScrollingLayerRect.top = scrollY; 2768 invalidate(); 2769 return; 2770 } 2771 mInOverScrollMode = false; 2772 int maxX = computeMaxScrollX(); 2773 int maxY = computeMaxScrollY(); 2774 if (maxX == 0) { 2775 // do not over scroll x if the page just fits the screen 2776 scrollX = pinLocX(scrollX); 2777 } else if (scrollX < 0 || scrollX > maxX) { 2778 mInOverScrollMode = true; 2779 } 2780 if (scrollY < 0 || scrollY > maxY) { 2781 mInOverScrollMode = true; 2782 } 2783 2784 int oldX = mScrollX; 2785 int oldY = mScrollY; 2786 2787 super.scrollTo(scrollX, scrollY); 2788 2789 if (mOverScrollGlow != null) { 2790 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2791 } 2792 } 2793 2794 /** 2795 * Get the url for the current page. This is not always the same as the url 2796 * passed to WebViewClient.onPageStarted because although the load for 2797 * that url has begun, the current page may not have changed. 2798 * @return The url for the current page. 2799 */ 2800 public String getUrl() { 2801 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2802 return h != null ? h.getUrl() : null; 2803 } 2804 2805 /** 2806 * Get the original url for the current page. This is not always the same 2807 * as the url passed to WebViewClient.onPageStarted because although the 2808 * load for that url has begun, the current page may not have changed. 2809 * Also, there may have been redirects resulting in a different url to that 2810 * originally requested. 2811 * @return The url that was originally requested for the current page. 2812 */ 2813 public String getOriginalUrl() { 2814 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2815 return h != null ? h.getOriginalUrl() : null; 2816 } 2817 2818 /** 2819 * Get the title for the current page. This is the title of the current page 2820 * until WebViewClient.onReceivedTitle is called. 2821 * @return The title for the current page. 2822 */ 2823 public String getTitle() { 2824 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2825 return h != null ? h.getTitle() : null; 2826 } 2827 2828 /** 2829 * Get the favicon for the current page. This is the favicon of the current 2830 * page until WebViewClient.onReceivedIcon is called. 2831 * @return The favicon for the current page. 2832 */ 2833 public Bitmap getFavicon() { 2834 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2835 return h != null ? h.getFavicon() : null; 2836 } 2837 2838 /** 2839 * Get the touch icon url for the apple-touch-icon <link> element, or 2840 * a URL on this site's server pointing to the standard location of a 2841 * touch icon. 2842 * @hide 2843 */ 2844 public String getTouchIconUrl() { 2845 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2846 return h != null ? h.getTouchIconUrl() : null; 2847 } 2848 2849 /** 2850 * Get the progress for the current page. 2851 * @return The progress for the current page between 0 and 100. 2852 */ 2853 public int getProgress() { 2854 return mCallbackProxy.getProgress(); 2855 } 2856 2857 /** 2858 * @return the height of the HTML content. 2859 */ 2860 public int getContentHeight() { 2861 return mContentHeight; 2862 } 2863 2864 /** 2865 * @return the width of the HTML content. 2866 * @hide 2867 */ 2868 public int getContentWidth() { 2869 return mContentWidth; 2870 } 2871 2872 /** 2873 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2874 * is a global requests, not restricted to just this webview. This can be 2875 * useful if the application has been paused. 2876 */ 2877 public void pauseTimers() { 2878 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2879 } 2880 2881 /** 2882 * Resume all layout, parsing, and JavaScript timers for all webviews. 2883 * This will resume dispatching all timers. 2884 */ 2885 public void resumeTimers() { 2886 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2887 } 2888 2889 /** 2890 * Call this to pause any extra processing associated with this WebView and 2891 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2892 * is taken offscreen, this could be called to reduce unnecessary CPU or 2893 * network traffic. When the WebView is again "active", call onResume(). 2894 * 2895 * Note that this differs from pauseTimers(), which affects all WebViews. 2896 */ 2897 public void onPause() { 2898 if (!mIsPaused) { 2899 mIsPaused = true; 2900 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2901 // We want to pause the current playing video when switching out 2902 // from the current WebView/tab. 2903 if (mHTML5VideoViewProxy != null) { 2904 mHTML5VideoViewProxy.pauseAndDispatch(); 2905 } 2906 } 2907 } 2908 2909 /** 2910 * Call this to resume a WebView after a previous call to onPause(). 2911 */ 2912 public void onResume() { 2913 if (mIsPaused) { 2914 mIsPaused = false; 2915 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2916 } 2917 } 2918 2919 /** 2920 * Returns true if the view is paused, meaning onPause() was called. Calling 2921 * onResume() sets the paused state back to false. 2922 * @hide 2923 */ 2924 public boolean isPaused() { 2925 return mIsPaused; 2926 } 2927 2928 /** 2929 * Call this to inform the view that memory is low so that it can 2930 * free any available memory. 2931 */ 2932 public void freeMemory() { 2933 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2934 } 2935 2936 /** 2937 * Clear the resource cache. Note that the cache is per-application, so 2938 * this will clear the cache for all WebViews used. 2939 * 2940 * @param includeDiskFiles If false, only the RAM cache is cleared. 2941 */ 2942 public void clearCache(boolean includeDiskFiles) { 2943 // Note: this really needs to be a static method as it clears cache for all 2944 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2945 // we can't make this static. 2946 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2947 includeDiskFiles ? 1 : 0, 0); 2948 } 2949 2950 /** 2951 * Make sure that clearing the form data removes the adapter from the 2952 * currently focused textfield if there is one. 2953 */ 2954 public void clearFormData() { 2955 if (inEditingMode()) { 2956 AutoCompleteAdapter adapter = null; 2957 mWebTextView.setAdapterCustom(adapter); 2958 } 2959 } 2960 2961 /** 2962 * Tell the WebView to clear its internal back/forward list. 2963 */ 2964 public void clearHistory() { 2965 mCallbackProxy.getBackForwardList().setClearPending(); 2966 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2967 } 2968 2969 /** 2970 * Clear the SSL preferences table stored in response to proceeding with SSL 2971 * certificate errors. 2972 */ 2973 public void clearSslPreferences() { 2974 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2975 } 2976 2977 /** 2978 * Return the WebBackForwardList for this WebView. This contains the 2979 * back/forward list for use in querying each item in the history stack. 2980 * This is a copy of the private WebBackForwardList so it contains only a 2981 * snapshot of the current state. Multiple calls to this method may return 2982 * different objects. The object returned from this method will not be 2983 * updated to reflect any new state. 2984 */ 2985 public WebBackForwardList copyBackForwardList() { 2986 return mCallbackProxy.getBackForwardList().clone(); 2987 } 2988 2989 /* 2990 * Highlight and scroll to the next occurance of String in findAll. 2991 * Wraps the page infinitely, and scrolls. Must be called after 2992 * calling findAll. 2993 * 2994 * @param forward Direction to search. 2995 */ 2996 public void findNext(boolean forward) { 2997 if (0 == mNativeClass) return; // client isn't initialized 2998 nativeFindNext(forward); 2999 } 3000 3001 /* 3002 * Find all instances of find on the page and highlight them. 3003 * @param find String to find. 3004 * @return int The number of occurances of the String "find" 3005 * that were found. 3006 */ 3007 public int findAll(String find) { 3008 if (0 == mNativeClass) return 0; // client isn't initialized 3009 int result = find != null ? nativeFindAll(find.toLowerCase(), 3010 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3011 invalidate(); 3012 mLastFind = find; 3013 return result; 3014 } 3015 3016 /** 3017 * Start an ActionMode for finding text in this WebView. Only works if this 3018 * WebView is attached to the view system. 3019 * @param text If non-null, will be the initial text to search for. 3020 * Otherwise, the last String searched for in this WebView will 3021 * be used to start. 3022 * @param showIme If true, show the IME, assuming the user will begin typing. 3023 * If false and text is non-null, perform a find all. 3024 * @return boolean True if the find dialog is shown, false otherwise. 3025 */ 3026 public boolean showFindDialog(String text, boolean showIme) { 3027 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3028 if (getParent() == null || startActionMode(callback) == null) { 3029 // Could not start the action mode, so end Find on page 3030 return false; 3031 } 3032 mFindCallback = callback; 3033 setFindIsUp(true); 3034 mFindCallback.setWebView(this); 3035 if (showIme) { 3036 mFindCallback.showSoftInput(); 3037 } else if (text != null) { 3038 mFindCallback.setText(text); 3039 mFindCallback.findAll(); 3040 return true; 3041 } 3042 if (text == null) { 3043 text = mLastFind; 3044 } 3045 if (text != null) { 3046 mFindCallback.setText(text); 3047 } 3048 return true; 3049 } 3050 3051 /** 3052 * Keep track of the find callback so that we can remove its titlebar if 3053 * necessary. 3054 */ 3055 private FindActionModeCallback mFindCallback; 3056 3057 /** 3058 * Toggle whether the find dialog is showing, for both native and Java. 3059 */ 3060 private void setFindIsUp(boolean isUp) { 3061 mFindIsUp = isUp; 3062 if (0 == mNativeClass) return; // client isn't initialized 3063 nativeSetFindIsUp(isUp); 3064 } 3065 3066 /** 3067 * Return the index of the currently highlighted match. 3068 */ 3069 int findIndex() { 3070 if (0 == mNativeClass) return -1; 3071 return nativeFindIndex(); 3072 } 3073 3074 // Used to know whether the find dialog is open. Affects whether 3075 // or not we draw the highlights for matches. 3076 private boolean mFindIsUp; 3077 3078 // Keep track of the last string sent, so we can search again when find is 3079 // reopened. 3080 private String mLastFind; 3081 3082 /** 3083 * Return the first substring consisting of the address of a physical 3084 * location. Currently, only addresses in the United States are detected, 3085 * and consist of: 3086 * - a house number 3087 * - a street name 3088 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3089 * - a city name 3090 * - a state or territory, either spelled out or two-letter abbr. 3091 * - an optional 5 digit or 9 digit zip code. 3092 * 3093 * All names must be correctly capitalized, and the zip code, if present, 3094 * must be valid for the state. The street type must be a standard USPS 3095 * spelling or abbreviation. The state or territory must also be spelled 3096 * or abbreviated using USPS standards. The house number may not exceed 3097 * five digits. 3098 * @param addr The string to search for addresses. 3099 * 3100 * @return the address, or if no address is found, return null. 3101 */ 3102 public static String findAddress(String addr) { 3103 return findAddress(addr, false); 3104 } 3105 3106 /** 3107 * @hide 3108 * Return the first substring consisting of the address of a physical 3109 * location. Currently, only addresses in the United States are detected, 3110 * and consist of: 3111 * - a house number 3112 * - a street name 3113 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3114 * - a city name 3115 * - a state or territory, either spelled out or two-letter abbr. 3116 * - an optional 5 digit or 9 digit zip code. 3117 * 3118 * Names are optionally capitalized, and the zip code, if present, 3119 * must be valid for the state. The street type must be a standard USPS 3120 * spelling or abbreviation. The state or territory must also be spelled 3121 * or abbreviated using USPS standards. The house number may not exceed 3122 * five digits. 3123 * @param addr The string to search for addresses. 3124 * @param caseInsensitive addr Set to true to make search ignore case. 3125 * 3126 * @return the address, or if no address is found, return null. 3127 */ 3128 public static String findAddress(String addr, boolean caseInsensitive) { 3129 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3130 } 3131 3132 /* 3133 * Clear the highlighting surrounding text matches created by findAll. 3134 */ 3135 public void clearMatches() { 3136 if (mNativeClass == 0) 3137 return; 3138 nativeSetFindIsEmpty(); 3139 invalidate(); 3140 } 3141 3142 /** 3143 * Called when the find ActionMode ends. 3144 */ 3145 void notifyFindDialogDismissed() { 3146 mFindCallback = null; 3147 if (mWebViewCore == null) { 3148 return; 3149 } 3150 clearMatches(); 3151 setFindIsUp(false); 3152 // Now that the dialog has been removed, ensure that we scroll to a 3153 // location that is not beyond the end of the page. 3154 pinScrollTo(mScrollX, mScrollY, false, 0); 3155 invalidate(); 3156 } 3157 3158 /** 3159 * Query the document to see if it contains any image references. The 3160 * message object will be dispatched with arg1 being set to 1 if images 3161 * were found and 0 if the document does not reference any images. 3162 * @param response The message that will be dispatched with the result. 3163 */ 3164 public void documentHasImages(Message response) { 3165 if (response == null) { 3166 return; 3167 } 3168 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3169 } 3170 3171 /** 3172 * Request the scroller to abort any ongoing animation 3173 * 3174 * @hide 3175 */ 3176 public void stopScroll() { 3177 mScroller.forceFinished(true); 3178 mLastVelocity = 0; 3179 } 3180 3181 @Override 3182 public void computeScroll() { 3183 if (mScroller.computeScrollOffset()) { 3184 int oldX = mScrollX; 3185 int oldY = mScrollY; 3186 int x = mScroller.getCurrX(); 3187 int y = mScroller.getCurrY(); 3188 invalidate(); // So we draw again 3189 3190 if (!mScroller.isFinished()) { 3191 int rangeX = computeMaxScrollX(); 3192 int rangeY = computeMaxScrollY(); 3193 int overflingDistance = mOverflingDistance; 3194 3195 // Use the layer's scroll data if needed. 3196 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3197 oldX = mScrollingLayerRect.left; 3198 oldY = mScrollingLayerRect.top; 3199 rangeX = mScrollingLayerRect.right; 3200 rangeY = mScrollingLayerRect.bottom; 3201 // No overscrolling for layers. 3202 overflingDistance = 0; 3203 } 3204 3205 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3206 rangeX, rangeY, 3207 overflingDistance, overflingDistance, false); 3208 3209 if (mOverScrollGlow != null) { 3210 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3211 } 3212 } else { 3213 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3214 mScrollX = x; 3215 mScrollY = y; 3216 } else { 3217 // Update the layer position instead of WebView. 3218 nativeScrollLayer(mScrollingLayer, x, y); 3219 mScrollingLayerRect.left = x; 3220 mScrollingLayerRect.top = y; 3221 } 3222 abortAnimation(); 3223 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3224 WebViewCore.resumePriority(); 3225 if (!mSelectingText) { 3226 WebViewCore.resumeUpdatePicture(mWebViewCore); 3227 } 3228 if (oldX != mScrollX || oldY != mScrollY) { 3229 sendOurVisibleRect(); 3230 } 3231 } 3232 } else { 3233 super.computeScroll(); 3234 } 3235 } 3236 3237 private static int computeDuration(int dx, int dy) { 3238 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3239 int duration = distance * 1000 / STD_SPEED; 3240 return Math.min(duration, MAX_DURATION); 3241 } 3242 3243 // helper to pin the scrollBy parameters (already in view coordinates) 3244 // returns true if the scroll was changed 3245 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3246 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3247 } 3248 // helper to pin the scrollTo parameters (already in view coordinates) 3249 // returns true if the scroll was changed 3250 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3251 x = pinLocX(x); 3252 y = pinLocY(y); 3253 int dx = x - mScrollX; 3254 int dy = y - mScrollY; 3255 3256 if ((dx | dy) == 0) { 3257 return false; 3258 } 3259 abortAnimation(); 3260 if (animate) { 3261 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3262 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3263 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3264 awakenScrollBars(mScroller.getDuration()); 3265 invalidate(); 3266 } else { 3267 scrollTo(x, y); 3268 } 3269 return true; 3270 } 3271 3272 // Scale from content to view coordinates, and pin. 3273 // Also called by jni webview.cpp 3274 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3275 if (mDrawHistory) { 3276 // disallow WebView to change the scroll position as History Picture 3277 // is used in the view system. 3278 // TODO: as we switchOutDrawHistory when trackball or navigation 3279 // keys are hit, this should be safe. Right? 3280 return false; 3281 } 3282 cx = contentToViewDimension(cx); 3283 cy = contentToViewDimension(cy); 3284 if (mHeightCanMeasure) { 3285 // move our visible rect according to scroll request 3286 if (cy != 0) { 3287 Rect tempRect = new Rect(); 3288 calcOurVisibleRect(tempRect); 3289 tempRect.offset(cx, cy); 3290 requestRectangleOnScreen(tempRect); 3291 } 3292 // FIXME: We scroll horizontally no matter what because currently 3293 // ScrollView and ListView will not scroll horizontally. 3294 // FIXME: Why do we only scroll horizontally if there is no 3295 // vertical scroll? 3296// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3297 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3298 } else { 3299 return pinScrollBy(cx, cy, animate, 0); 3300 } 3301 } 3302 3303 /** 3304 * Called by CallbackProxy when the page starts loading. 3305 * @param url The URL of the page which has started loading. 3306 */ 3307 /* package */ void onPageStarted(String url) { 3308 // every time we start a new page, we want to reset the 3309 // WebView certificate: if the new site is secure, we 3310 // will reload it and get a new certificate set; 3311 // if the new site is not secure, the certificate must be 3312 // null, and that will be the case 3313 setCertificate(null); 3314 3315 // reset the flag since we set to true in if need after 3316 // loading is see onPageFinished(Url) 3317 mAccessibilityScriptInjected = false; 3318 } 3319 3320 /** 3321 * Called by CallbackProxy when the page finishes loading. 3322 * @param url The URL of the page which has finished loading. 3323 */ 3324 /* package */ void onPageFinished(String url) { 3325 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3326 // If the user is now on a different page, or has scrolled the page 3327 // past the point where the title bar is offscreen, ignore the 3328 // scroll request. 3329 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3330 && mScrollX == 0 && mScrollY == 0) { 3331 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3332 SLIDE_TITLE_DURATION); 3333 } 3334 mPageThatNeedsToSlideTitleBarOffScreen = null; 3335 } 3336 mZoomManager.onPageFinished(url); 3337 injectAccessibilityForUrl(url); 3338 } 3339 3340 /** 3341 * This method injects accessibility in the loaded document if accessibility 3342 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3343 * If no URL specific script is found or JavaScript is disabled we fallback to 3344 * the default {@link AccessibilityInjector} implementation. 3345 * </p> 3346 * If the URL has the "axs" paramter set to 1 it has already done the 3347 * script injection so we do nothing. If the parameter is set to 0 3348 * the URL opts out accessibility script injection so we fall back to 3349 * the default {@link AccessibilityInjector}. 3350 * </p> 3351 * Note: If the user has not opted-in the accessibility script injection no scripts 3352 * are injected rather the default {@link AccessibilityInjector} implementation 3353 * is used. 3354 * 3355 * @param url The URL loaded by this {@link WebView}. 3356 */ 3357 private void injectAccessibilityForUrl(String url) { 3358 if (mWebViewCore == null) { 3359 return; 3360 } 3361 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3362 3363 if (!accessibilityManager.isEnabled()) { 3364 // it is possible that accessibility was turned off between reloads 3365 ensureAccessibilityScriptInjectorInstance(false); 3366 return; 3367 } 3368 3369 if (!getSettings().getJavaScriptEnabled()) { 3370 // no JS so we fallback to the basic buil-in support 3371 ensureAccessibilityScriptInjectorInstance(true); 3372 return; 3373 } 3374 3375 // check the URL "axs" parameter to choose appropriate action 3376 int axsParameterValue = getAxsUrlParameterValue(url); 3377 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3378 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3379 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3380 if (onDeviceScriptInjectionEnabled) { 3381 ensureAccessibilityScriptInjectorInstance(false); 3382 // neither script injected nor script injection opted out => we inject 3383 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3384 // TODO: Set this flag after successfull script injection. Maybe upon injection 3385 // the chooser should update the meta tag and we check it to declare success 3386 mAccessibilityScriptInjected = true; 3387 } else { 3388 // injection disabled so we fallback to the basic built-in support 3389 ensureAccessibilityScriptInjectorInstance(true); 3390 } 3391 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3392 // injection opted out so we fallback to the basic buil-in support 3393 ensureAccessibilityScriptInjectorInstance(true); 3394 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3395 ensureAccessibilityScriptInjectorInstance(false); 3396 // the URL provides accessibility but we still need to add our generic script 3397 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3398 } else { 3399 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3400 } 3401 } 3402 3403 /** 3404 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3405 * 3406 * @param present True to ensure an insance, false to ensure no instance. 3407 */ 3408 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3409 if (present) { 3410 if (mAccessibilityInjector == null) { 3411 mAccessibilityInjector = new AccessibilityInjector(this); 3412 } 3413 } else { 3414 mAccessibilityInjector = null; 3415 } 3416 } 3417 3418 /** 3419 * Gets the "axs" URL parameter value. 3420 * 3421 * @param url A url to fetch the paramter from. 3422 * @return The parameter value if such, -1 otherwise. 3423 */ 3424 private int getAxsUrlParameterValue(String url) { 3425 if (mMatchAxsUrlParameterPattern == null) { 3426 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3427 } 3428 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3429 if (matcher.find()) { 3430 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3431 return Integer.parseInt(keyValuePair.split("=")[1]); 3432 } 3433 return -1; 3434 } 3435 3436 /** 3437 * The URL of a page that sent a message to scroll the title bar off screen. 3438 * 3439 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3440 * title bar off the screen. Sometimes, the scroll position is set before 3441 * the page finishes loading. Rather than scrolling while the page is still 3442 * loading, keep track of the URL and new scroll position so we can perform 3443 * the scroll once the page finishes loading. 3444 */ 3445 private String mPageThatNeedsToSlideTitleBarOffScreen; 3446 3447 /** 3448 * The destination Y scroll position to be used when the page finishes 3449 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3450 */ 3451 private int mYDistanceToSlideTitleOffScreen; 3452 3453 // scale from content to view coordinates, and pin 3454 // return true if pin caused the final x/y different than the request cx/cy, 3455 // and a future scroll may reach the request cx/cy after our size has 3456 // changed 3457 // return false if the view scroll to the exact position as it is requested, 3458 // where negative numbers are taken to mean 0 3459 private boolean setContentScrollTo(int cx, int cy) { 3460 if (mDrawHistory) { 3461 // disallow WebView to change the scroll position as History Picture 3462 // is used in the view system. 3463 // One known case where this is called is that WebCore tries to 3464 // restore the scroll position. As history Picture already uses the 3465 // saved scroll position, it is ok to skip this. 3466 return false; 3467 } 3468 int vx; 3469 int vy; 3470 if ((cx | cy) == 0) { 3471 // If the page is being scrolled to (0,0), do not add in the title 3472 // bar's height, and simply scroll to (0,0). (The only other work 3473 // in contentToView_ is to multiply, so this would not change 0.) 3474 vx = 0; 3475 vy = 0; 3476 } else { 3477 vx = contentToViewX(cx); 3478 vy = contentToViewY(cy); 3479 } 3480// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3481// vx + " " + vy + "]"); 3482 // Some mobile sites attempt to scroll the title bar off the page by 3483 // scrolling to (0,1). If we are at the top left corner of the 3484 // page, assume this is an attempt to scroll off the title bar, and 3485 // animate the title bar off screen slowly enough that the user can see 3486 // it. 3487 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3488 && mTitleBar != null) { 3489 // FIXME: 100 should be defined somewhere as our max progress. 3490 if (getProgress() < 100) { 3491 // Wait to scroll the title bar off screen until the page has 3492 // finished loading. Keep track of the URL and the destination 3493 // Y position 3494 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3495 mYDistanceToSlideTitleOffScreen = vy; 3496 } else { 3497 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3498 } 3499 // Since we are animating, we have not yet reached the desired 3500 // scroll position. Do not return true to request another attempt 3501 return false; 3502 } 3503 pinScrollTo(vx, vy, false, 0); 3504 // If the request was to scroll to a negative coordinate, treat it as if 3505 // it was a request to scroll to 0 3506 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3507 return true; 3508 } else { 3509 return false; 3510 } 3511 } 3512 3513 // scale from content to view coordinates, and pin 3514 private void spawnContentScrollTo(int cx, int cy) { 3515 if (mDrawHistory) { 3516 // disallow WebView to change the scroll position as History Picture 3517 // is used in the view system. 3518 return; 3519 } 3520 int vx = contentToViewX(cx); 3521 int vy = contentToViewY(cy); 3522 pinScrollTo(vx, vy, true, 0); 3523 } 3524 3525 /** 3526 * These are from webkit, and are in content coordinate system (unzoomed) 3527 */ 3528 private void contentSizeChanged(boolean updateLayout) { 3529 // suppress 0,0 since we usually see real dimensions soon after 3530 // this avoids drawing the prev content in a funny place. If we find a 3531 // way to consolidate these notifications, this check may become 3532 // obsolete 3533 if ((mContentWidth | mContentHeight) == 0) { 3534 return; 3535 } 3536 3537 if (mHeightCanMeasure) { 3538 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3539 || updateLayout) { 3540 requestLayout(); 3541 } 3542 } else if (mWidthCanMeasure) { 3543 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3544 || updateLayout) { 3545 requestLayout(); 3546 } 3547 } else { 3548 // If we don't request a layout, try to send our view size to the 3549 // native side to ensure that WebCore has the correct dimensions. 3550 sendViewSizeZoom(false); 3551 } 3552 } 3553 3554 /** 3555 * Set the WebViewClient that will receive various notifications and 3556 * requests. This will replace the current handler. 3557 * @param client An implementation of WebViewClient. 3558 */ 3559 public void setWebViewClient(WebViewClient client) { 3560 mCallbackProxy.setWebViewClient(client); 3561 } 3562 3563 /** 3564 * Gets the WebViewClient 3565 * @return the current WebViewClient instance. 3566 * 3567 *@hide pending API council approval. 3568 */ 3569 public WebViewClient getWebViewClient() { 3570 return mCallbackProxy.getWebViewClient(); 3571 } 3572 3573 /** 3574 * Register the interface to be used when content can not be handled by 3575 * the rendering engine, and should be downloaded instead. This will replace 3576 * the current handler. 3577 * @param listener An implementation of DownloadListener. 3578 */ 3579 public void setDownloadListener(DownloadListener listener) { 3580 mCallbackProxy.setDownloadListener(listener); 3581 } 3582 3583 /** 3584 * Set the chrome handler. This is an implementation of WebChromeClient for 3585 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3586 * This will replace the current handler. 3587 * @param client An implementation of WebChromeClient. 3588 */ 3589 public void setWebChromeClient(WebChromeClient client) { 3590 mCallbackProxy.setWebChromeClient(client); 3591 } 3592 3593 /** 3594 * Gets the chrome handler. 3595 * @return the current WebChromeClient instance. 3596 * 3597 * @hide API council approval. 3598 */ 3599 public WebChromeClient getWebChromeClient() { 3600 return mCallbackProxy.getWebChromeClient(); 3601 } 3602 3603 /** 3604 * Set the back/forward list client. This is an implementation of 3605 * WebBackForwardListClient for handling new items and changes in the 3606 * history index. 3607 * @param client An implementation of WebBackForwardListClient. 3608 * {@hide} 3609 */ 3610 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3611 mCallbackProxy.setWebBackForwardListClient(client); 3612 } 3613 3614 /** 3615 * Gets the WebBackForwardListClient. 3616 * {@hide} 3617 */ 3618 public WebBackForwardListClient getWebBackForwardListClient() { 3619 return mCallbackProxy.getWebBackForwardListClient(); 3620 } 3621 3622 /** 3623 * Set the Picture listener. This is an interface used to receive 3624 * notifications of a new Picture. 3625 * @param listener An implementation of WebView.PictureListener. 3626 */ 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, Region invalRegion, boolean showVisualIndicator, 4035 boolean isPictureAfterFirstLayout) { 4036 if (mNativeClass == 0) 4037 return; 4038 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4039 isPictureAfterFirstLayout); 4040 if (mHTML5VideoViewProxy != null) { 4041 mHTML5VideoViewProxy.setBaseLayer(layer); 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 if (!canvas.isHardwareAccelerated()) { 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. We only need to do this in software 4126 // rendering (with hardware rendering we already have a different 4127 // method of requesting a repaint) 4128 if (!canvas.isHardwareAccelerated()) 4129 invalidate(); 4130 } 4131 4132 // decide which adornments to draw 4133 int extras = DRAW_EXTRAS_NONE; 4134 if (mFindIsUp) { 4135 extras = DRAW_EXTRAS_FIND; 4136 } else if (mSelectingText) { 4137 extras = DRAW_EXTRAS_SELECTION; 4138 nativeSetSelectionPointer(mDrawSelectionPointer, 4139 mZoomManager.getInvScale(), 4140 mSelectX, mSelectY - getTitleHeight()); 4141 } else if (drawCursorRing) { 4142 extras = DRAW_EXTRAS_CURSOR_RING; 4143 } 4144 if (DebugFlags.WEB_VIEW) { 4145 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4146 + " mSelectingText=" + mSelectingText 4147 + " nativePageShouldHandleShiftAndArrows()=" 4148 + nativePageShouldHandleShiftAndArrows() 4149 + " animateZoom=" + animateZoom 4150 + " extras=" + extras); 4151 } 4152 4153 if (canvas.isHardwareAccelerated()) { 4154 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4155 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4156 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4157 } else { 4158 DrawFilter df = null; 4159 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4160 df = mZoomFilter; 4161 } else if (animateScroll) { 4162 df = mScrollFilter; 4163 } 4164 canvas.setDrawFilter(df); 4165 // XXX: Revisit splitting content. Right now it causes a 4166 // synchronization problem with layers. 4167 int content = nativeDraw(canvas, color, extras, false); 4168 canvas.setDrawFilter(null); 4169 if (content != 0) { 4170 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4171 } 4172 } 4173 4174 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4175 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4176 mTouchMode = TOUCH_SHORTPRESS_MODE; 4177 } 4178 } 4179 if (mFocusSizeChanged) { 4180 mFocusSizeChanged = false; 4181 // If we are zooming, this will get handled above, when the zoom 4182 // finishes. We also do not need to do this unless the WebTextView 4183 // is showing. 4184 if (!animateZoom && inEditingMode()) { 4185 didUpdateWebTextViewDimensions(ANYWHERE); 4186 } 4187 } 4188 } 4189 4190 // draw history 4191 private boolean mDrawHistory = false; 4192 private Picture mHistoryPicture = null; 4193 private int mHistoryWidth = 0; 4194 private int mHistoryHeight = 0; 4195 4196 // Only check the flag, can be called from WebCore thread 4197 boolean drawHistory() { 4198 return mDrawHistory; 4199 } 4200 4201 int getHistoryPictureWidth() { 4202 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4203 } 4204 4205 // Should only be called in UI thread 4206 void switchOutDrawHistory() { 4207 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4208 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4209 mDrawHistory = false; 4210 mHistoryPicture = null; 4211 invalidate(); 4212 int oldScrollX = mScrollX; 4213 int oldScrollY = mScrollY; 4214 mScrollX = pinLocX(mScrollX); 4215 mScrollY = pinLocY(mScrollY); 4216 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4217 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4218 } else { 4219 sendOurVisibleRect(); 4220 } 4221 } 4222 } 4223 4224 WebViewCore.CursorData cursorData() { 4225 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4226 result.mMoveGeneration = nativeMoveGeneration(); 4227 result.mFrame = nativeCursorFramePointer(); 4228 Point position = nativeCursorPosition(); 4229 result.mX = position.x; 4230 result.mY = position.y; 4231 return result; 4232 } 4233 4234 /** 4235 * Delete text from start to end in the focused textfield. If there is no 4236 * focus, or if start == end, silently fail. If start and end are out of 4237 * order, swap them. 4238 * @param start Beginning of selection to delete. 4239 * @param end End of selection to delete. 4240 */ 4241 /* package */ void deleteSelection(int start, int end) { 4242 mTextGeneration++; 4243 WebViewCore.TextSelectionData data 4244 = new WebViewCore.TextSelectionData(start, end); 4245 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4246 data); 4247 } 4248 4249 /** 4250 * Set the selection to (start, end) in the focused textfield. If start and 4251 * end are out of order, swap them. 4252 * @param start Beginning of selection. 4253 * @param end End of selection. 4254 */ 4255 /* package */ void setSelection(int start, int end) { 4256 if (mWebViewCore != null) { 4257 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4258 } 4259 } 4260 4261 @Override 4262 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4263 InputConnection connection = super.onCreateInputConnection(outAttrs); 4264 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4265 return connection; 4266 } 4267 4268 /** 4269 * Called in response to a message from webkit telling us that the soft 4270 * keyboard should be launched. 4271 */ 4272 private void displaySoftKeyboard(boolean isTextView) { 4273 InputMethodManager imm = (InputMethodManager) 4274 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4275 4276 // bring it back to the default level scale so that user can enter text 4277 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4278 if (zoom) { 4279 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4280 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4281 } 4282 if (isTextView) { 4283 rebuildWebTextView(); 4284 if (inEditingMode()) { 4285 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4286 if (zoom) { 4287 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4288 } 4289 return; 4290 } 4291 } 4292 // Used by plugins and contentEditable. 4293 // Also used if the navigation cache is out of date, and 4294 // does not recognize that a textfield is in focus. In that 4295 // case, use WebView as the targeted view. 4296 // see http://b/issue?id=2457459 4297 imm.showSoftInput(this, 0); 4298 } 4299 4300 // Called by WebKit to instruct the UI to hide the keyboard 4301 private void hideSoftKeyboard() { 4302 InputMethodManager imm = InputMethodManager.peekInstance(); 4303 if (imm != null && (imm.isActive(this) 4304 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4305 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4306 } 4307 } 4308 4309 /* 4310 * This method checks the current focus and cursor and potentially rebuilds 4311 * mWebTextView to have the appropriate properties, such as password, 4312 * multiline, and what text it contains. It also removes it if necessary. 4313 */ 4314 /* package */ void rebuildWebTextView() { 4315 // If the WebView does not have focus, do nothing until it gains focus. 4316 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4317 return; 4318 } 4319 boolean alreadyThere = inEditingMode(); 4320 // inEditingMode can only return true if mWebTextView is non-null, 4321 // so we can safely call remove() if (alreadyThere) 4322 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4323 if (alreadyThere) { 4324 mWebTextView.remove(); 4325 } 4326 return; 4327 } 4328 // At this point, we know we have found an input field, so go ahead 4329 // and create the WebTextView if necessary. 4330 if (mWebTextView == null) { 4331 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4332 // Initialize our generation number. 4333 mTextGeneration = 0; 4334 } 4335 mWebTextView.updateTextSize(); 4336 Rect visibleRect = new Rect(); 4337 calcOurContentVisibleRect(visibleRect); 4338 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4339 // should be in content coordinates. 4340 Rect bounds = nativeFocusCandidateNodeBounds(); 4341 Rect vBox = contentToViewRect(bounds); 4342 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4343 if (!Rect.intersects(bounds, visibleRect)) { 4344 revealSelection(); 4345 } 4346 String text = nativeFocusCandidateText(); 4347 int nodePointer = nativeFocusCandidatePointer(); 4348 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4349 // It is possible that we have the same textfield, but it has moved, 4350 // i.e. In the case of opening/closing the screen. 4351 // In that case, we need to set the dimensions, but not the other 4352 // aspects. 4353 // If the text has been changed by webkit, update it. However, if 4354 // there has been more UI text input, ignore it. We will receive 4355 // another update when that text is recognized. 4356 if (text != null && !text.equals(mWebTextView.getText().toString()) 4357 && nativeTextGeneration() == mTextGeneration) { 4358 mWebTextView.setTextAndKeepSelection(text); 4359 } 4360 } else { 4361 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4362 Gravity.RIGHT : Gravity.NO_GRAVITY); 4363 // This needs to be called before setType, which may call 4364 // requestFormData, and it needs to have the correct nodePointer. 4365 mWebTextView.setNodePointer(nodePointer); 4366 mWebTextView.setType(nativeFocusCandidateType()); 4367 updateWebTextViewPadding(); 4368 if (null == text) { 4369 if (DebugFlags.WEB_VIEW) { 4370 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4371 } 4372 text = ""; 4373 } 4374 mWebTextView.setTextAndKeepSelection(text); 4375 InputMethodManager imm = InputMethodManager.peekInstance(); 4376 if (imm != null && imm.isActive(mWebTextView)) { 4377 imm.restartInput(mWebTextView); 4378 } 4379 } 4380 if (isFocused()) { 4381 mWebTextView.requestFocus(); 4382 } 4383 } 4384 4385 /** 4386 * Update the padding of mWebTextView based on the native textfield/textarea 4387 */ 4388 void updateWebTextViewPadding() { 4389 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4390 if (paddingRect != null) { 4391 // Use contentToViewDimension since these are the dimensions of 4392 // the padding. 4393 mWebTextView.setPadding( 4394 contentToViewDimension(paddingRect.left), 4395 contentToViewDimension(paddingRect.top), 4396 contentToViewDimension(paddingRect.right), 4397 contentToViewDimension(paddingRect.bottom)); 4398 } 4399 } 4400 4401 /** 4402 * Tell webkit to put the cursor on screen. 4403 */ 4404 /* package */ void revealSelection() { 4405 if (mWebViewCore != null) { 4406 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4407 } 4408 } 4409 4410 /** 4411 * Called by WebTextView to find saved form data associated with the 4412 * textfield 4413 * @param name Name of the textfield. 4414 * @param nodePointer Pointer to the node of the textfield, so it can be 4415 * compared to the currently focused textfield when the data is 4416 * retrieved. 4417 * @param autoFillable true if WebKit has determined this field is part of 4418 * a form that can be auto filled. 4419 * @param autoComplete true if the attribute "autocomplete" is set to true 4420 * on the textfield. 4421 */ 4422 /* package */ void requestFormData(String name, int nodePointer, 4423 boolean autoFillable, boolean autoComplete) { 4424 if (mWebViewCore.getSettings().getSaveFormData()) { 4425 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4426 update.arg1 = nodePointer; 4427 RequestFormData updater = new RequestFormData(name, getUrl(), 4428 update, autoFillable, autoComplete); 4429 Thread t = new Thread(updater); 4430 t.start(); 4431 } 4432 } 4433 4434 /** 4435 * Pass a message to find out the <label> associated with the <input> 4436 * identified by nodePointer 4437 * @param framePointer Pointer to the frame containing the <input> node 4438 * @param nodePointer Pointer to the node for which a <label> is desired. 4439 */ 4440 /* package */ void requestLabel(int framePointer, int nodePointer) { 4441 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4442 nodePointer); 4443 } 4444 4445 /* 4446 * This class requests an Adapter for the WebTextView which shows past 4447 * entries stored in the database. It is a Runnable so that it can be done 4448 * in its own thread, without slowing down the UI. 4449 */ 4450 private class RequestFormData implements Runnable { 4451 private String mName; 4452 private String mUrl; 4453 private Message mUpdateMessage; 4454 private boolean mAutoFillable; 4455 private boolean mAutoComplete; 4456 4457 public RequestFormData(String name, String url, Message msg, 4458 boolean autoFillable, boolean autoComplete) { 4459 mName = name; 4460 mUrl = url; 4461 mUpdateMessage = msg; 4462 mAutoFillable = autoFillable; 4463 mAutoComplete = autoComplete; 4464 } 4465 4466 public void run() { 4467 ArrayList<String> pastEntries = new ArrayList<String>(); 4468 4469 if (mAutoFillable) { 4470 // Note that code inside the adapter click handler in WebTextView depends 4471 // on the AutoFill item being at the top of the drop down list. If you change 4472 // the order, make sure to do it there too! 4473 WebSettings settings = getSettings(); 4474 if (settings != null && settings.getAutoFillProfile() != null) { 4475 pastEntries.add(getResources().getText( 4476 com.android.internal.R.string.autofill_this_form).toString() + 4477 " " + 4478 mAutoFillData.getPreviewString()); 4479 mWebTextView.setAutoFillProfileIsSet(true); 4480 } else { 4481 // There is no autofill profile set up yet, so add an option that 4482 // will invite the user to set their profile up. 4483 pastEntries.add(getResources().getText( 4484 com.android.internal.R.string.setup_autofill).toString()); 4485 mWebTextView.setAutoFillProfileIsSet(false); 4486 } 4487 } 4488 4489 if (mAutoComplete) { 4490 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4491 } 4492 4493 if (pastEntries.size() > 0) { 4494 AutoCompleteAdapter adapter = new 4495 AutoCompleteAdapter(mContext, pastEntries); 4496 mUpdateMessage.obj = adapter; 4497 mUpdateMessage.sendToTarget(); 4498 } 4499 } 4500 } 4501 4502 /** 4503 * Dump the display tree to "/sdcard/displayTree.txt" 4504 * 4505 * @hide debug only 4506 */ 4507 public void dumpDisplayTree() { 4508 nativeDumpDisplayTree(getUrl()); 4509 } 4510 4511 /** 4512 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4513 * "/sdcard/domTree.txt" 4514 * 4515 * @hide debug only 4516 */ 4517 public void dumpDomTree(boolean toFile) { 4518 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4519 } 4520 4521 /** 4522 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4523 * to "/sdcard/renderTree.txt" 4524 * 4525 * @hide debug only 4526 */ 4527 public void dumpRenderTree(boolean toFile) { 4528 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4529 } 4530 4531 /** 4532 * Called by DRT on UI thread, need to proxy to WebCore thread. 4533 * 4534 * @hide debug only 4535 */ 4536 public void useMockDeviceOrientation() { 4537 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4538 } 4539 4540 /** 4541 * Called by DRT on WebCore thread. 4542 * 4543 * @hide debug only 4544 */ 4545 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4546 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4547 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4548 canProvideGamma, gamma); 4549 } 4550 4551 /** 4552 * Dump the V8 counters to standard output. 4553 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4554 * true. Otherwise, this will do nothing. 4555 * 4556 * @hide debug only 4557 */ 4558 public void dumpV8Counters() { 4559 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4560 } 4561 4562 // This is used to determine long press with the center key. Does not 4563 // affect long press with the trackball/touch. 4564 private boolean mGotCenterDown = false; 4565 4566 @Override 4567 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4568 // send complex characters to webkit for use by JS and plugins 4569 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4570 // pass the key to DOM 4571 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4572 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4573 // return true as DOM handles the key 4574 return true; 4575 } 4576 return false; 4577 } 4578 4579 private boolean isEnterActionKey(int keyCode) { 4580 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4581 || keyCode == KeyEvent.KEYCODE_ENTER 4582 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4583 } 4584 4585 @Override 4586 public boolean onKeyDown(int keyCode, KeyEvent event) { 4587 if (DebugFlags.WEB_VIEW) { 4588 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4589 + "keyCode=" + keyCode 4590 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4591 } 4592 4593 // don't implement accelerator keys here; defer to host application 4594 if (event.isCtrlPressed()) { 4595 return false; 4596 } 4597 4598 if (mNativeClass == 0) { 4599 return false; 4600 } 4601 4602 // do this hack up front, so it always works, regardless of touch-mode 4603 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4604 mAutoRedraw = !mAutoRedraw; 4605 if (mAutoRedraw) { 4606 invalidate(); 4607 } 4608 return true; 4609 } 4610 4611 // Bubble up the key event if 4612 // 1. it is a system key; or 4613 // 2. the host application wants to handle it; 4614 if (event.isSystem() 4615 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4616 return false; 4617 } 4618 4619 // accessibility support 4620 if (accessibilityScriptInjected()) { 4621 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4622 // if an accessibility script is injected we delegate to it the key handling. 4623 // this script is a screen reader which is a fully fledged solution for blind 4624 // users to navigate in and interact with web pages. 4625 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4626 return true; 4627 } else { 4628 // Clean up if accessibility was disabled after loading the current URL. 4629 mAccessibilityScriptInjected = false; 4630 } 4631 } else if (mAccessibilityInjector != null) { 4632 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4633 if (mAccessibilityInjector.onKeyEvent(event)) { 4634 // if an accessibility injector is present (no JavaScript enabled or the site 4635 // opts out injecting our JavaScript screen reader) we let it decide whether 4636 // to act on and consume the event. 4637 return true; 4638 } 4639 } else { 4640 // Clean up if accessibility was disabled after loading the current URL. 4641 mAccessibilityInjector = null; 4642 } 4643 } 4644 4645 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4646 if (event.hasNoModifiers()) { 4647 pageUp(false); 4648 return true; 4649 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4650 pageUp(true); 4651 return true; 4652 } 4653 } 4654 4655 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4656 if (event.hasNoModifiers()) { 4657 pageDown(false); 4658 return true; 4659 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4660 pageDown(true); 4661 return true; 4662 } 4663 } 4664 4665 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4666 pageUp(true); 4667 return true; 4668 } 4669 4670 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4671 pageDown(true); 4672 return true; 4673 } 4674 4675 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4676 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4677 switchOutDrawHistory(); 4678 if (nativePageShouldHandleShiftAndArrows()) { 4679 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4680 return true; 4681 } 4682 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4683 switch (keyCode) { 4684 case KeyEvent.KEYCODE_DPAD_UP: 4685 pageUp(true); 4686 return true; 4687 case KeyEvent.KEYCODE_DPAD_DOWN: 4688 pageDown(true); 4689 return true; 4690 case KeyEvent.KEYCODE_DPAD_LEFT: 4691 nativeClearCursor(); // start next trackball movement from page edge 4692 return pinScrollTo(0, mScrollY, true, 0); 4693 case KeyEvent.KEYCODE_DPAD_RIGHT: 4694 nativeClearCursor(); // start next trackball movement from page edge 4695 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4696 } 4697 } 4698 if (mSelectingText) { 4699 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4700 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4701 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4702 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4703 int multiplier = event.getRepeatCount() + 1; 4704 moveSelection(xRate * multiplier, yRate * multiplier); 4705 return true; 4706 } 4707 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4708 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4709 return true; 4710 } 4711 // Bubble up the key event as WebView doesn't handle it 4712 return false; 4713 } 4714 4715 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4716 switchOutDrawHistory(); 4717 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4718 || nativeCursorWantsKeyEvents(); 4719 if (event.getRepeatCount() == 0) { 4720 if (mSelectingText) { 4721 return true; // discard press if copy in progress 4722 } 4723 mGotCenterDown = true; 4724 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4725 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4726 // Already checked mNativeClass, so we do not need to check it 4727 // again. 4728 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4729 if (!wantsKeyEvents) return true; 4730 } 4731 // Bubble up the key event as WebView doesn't handle it 4732 if (!wantsKeyEvents) return false; 4733 } 4734 4735 if (getSettings().getNavDump()) { 4736 switch (keyCode) { 4737 case KeyEvent.KEYCODE_4: 4738 dumpDisplayTree(); 4739 break; 4740 case KeyEvent.KEYCODE_5: 4741 case KeyEvent.KEYCODE_6: 4742 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4743 break; 4744 case KeyEvent.KEYCODE_7: 4745 case KeyEvent.KEYCODE_8: 4746 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4747 break; 4748 case KeyEvent.KEYCODE_9: 4749 nativeInstrumentReport(); 4750 return true; 4751 } 4752 } 4753 4754 if (nativeCursorIsTextInput()) { 4755 // This message will put the node in focus, for the DOM's notion 4756 // of focus. 4757 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4758 nativeCursorNodePointer()); 4759 // This will bring up the WebTextView and put it in focus, for 4760 // our view system's notion of focus 4761 rebuildWebTextView(); 4762 // Now we need to pass the event to it 4763 if (inEditingMode()) { 4764 mWebTextView.setDefaultSelection(); 4765 return mWebTextView.dispatchKeyEvent(event); 4766 } 4767 } else if (nativeHasFocusNode()) { 4768 // In this case, the cursor is not on a text input, but the focus 4769 // might be. Check it, and if so, hand over to the WebTextView. 4770 rebuildWebTextView(); 4771 if (inEditingMode()) { 4772 mWebTextView.setDefaultSelection(); 4773 return mWebTextView.dispatchKeyEvent(event); 4774 } 4775 } 4776 4777 // TODO: should we pass all the keys to DOM or check the meta tag 4778 if (nativeCursorWantsKeyEvents() || true) { 4779 // pass the key to DOM 4780 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4781 // return true as DOM handles the key 4782 return true; 4783 } 4784 4785 // Bubble up the key event as WebView doesn't handle it 4786 return false; 4787 } 4788 4789 @Override 4790 public boolean onKeyUp(int keyCode, KeyEvent event) { 4791 if (DebugFlags.WEB_VIEW) { 4792 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4793 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4794 } 4795 4796 if (mNativeClass == 0) { 4797 return false; 4798 } 4799 4800 // special CALL handling when cursor node's href is "tel:XXX" 4801 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4802 String text = nativeCursorText(); 4803 if (!nativeCursorIsTextInput() && text != null 4804 && text.startsWith(SCHEME_TEL)) { 4805 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4806 getContext().startActivity(intent); 4807 return true; 4808 } 4809 } 4810 4811 // Bubble up the key event if 4812 // 1. it is a system key; or 4813 // 2. the host application wants to handle it; 4814 if (event.isSystem() 4815 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4816 return false; 4817 } 4818 4819 // accessibility support 4820 if (accessibilityScriptInjected()) { 4821 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4822 // if an accessibility script is injected we delegate to it the key handling. 4823 // this script is a screen reader which is a fully fledged solution for blind 4824 // users to navigate in and interact with web pages. 4825 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4826 return true; 4827 } else { 4828 // Clean up if accessibility was disabled after loading the current URL. 4829 mAccessibilityScriptInjected = false; 4830 } 4831 } else if (mAccessibilityInjector != null) { 4832 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4833 if (mAccessibilityInjector.onKeyEvent(event)) { 4834 // if an accessibility injector is present (no JavaScript enabled or the site 4835 // opts out injecting our JavaScript screen reader) we let it decide whether to 4836 // act on and consume the event. 4837 return true; 4838 } 4839 } else { 4840 // Clean up if accessibility was disabled after loading the current URL. 4841 mAccessibilityInjector = null; 4842 } 4843 } 4844 4845 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4846 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4847 if (nativePageShouldHandleShiftAndArrows()) { 4848 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4849 return true; 4850 } 4851 // always handle the navigation keys in the UI thread 4852 // Bubble up the key event as WebView doesn't handle it 4853 return false; 4854 } 4855 4856 if (isEnterActionKey(keyCode)) { 4857 // remove the long press message first 4858 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4859 mGotCenterDown = false; 4860 4861 if (mSelectingText) { 4862 if (mExtendSelection) { 4863 copySelection(); 4864 selectionDone(); 4865 } else { 4866 mExtendSelection = true; 4867 nativeSetExtendSelection(); 4868 invalidate(); // draw the i-beam instead of the arrow 4869 } 4870 return true; // discard press if copy in progress 4871 } 4872 4873 // perform the single click 4874 Rect visibleRect = sendOurVisibleRect(); 4875 // Note that sendOurVisibleRect calls viewToContent, so the 4876 // coordinates should be in content coordinates. 4877 if (!nativeCursorIntersects(visibleRect)) { 4878 return false; 4879 } 4880 WebViewCore.CursorData data = cursorData(); 4881 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4882 playSoundEffect(SoundEffectConstants.CLICK); 4883 if (nativeCursorIsTextInput()) { 4884 rebuildWebTextView(); 4885 centerKeyPressOnTextField(); 4886 if (inEditingMode()) { 4887 mWebTextView.setDefaultSelection(); 4888 } 4889 return true; 4890 } 4891 clearTextEntry(); 4892 nativeShowCursorTimed(); 4893 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4894 return true; 4895 } 4896 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4897 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4898 nativeCursorNodePointer()); 4899 return true; 4900 } 4901 } 4902 4903 // TODO: should we pass all the keys to DOM or check the meta tag 4904 if (nativeCursorWantsKeyEvents() || true) { 4905 // pass the key to DOM 4906 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4907 // return true as DOM handles the key 4908 return true; 4909 } 4910 4911 // Bubble up the key event as WebView doesn't handle it 4912 return false; 4913 } 4914 4915 /* 4916 * Enter selecting text mode, and see if CAB should be shown. 4917 * Returns true if the WebView is now in 4918 * selecting text mode (including if it was already in that mode, and this 4919 * method did nothing). 4920 */ 4921 private boolean setUpSelect(boolean selectWord, int x, int y) { 4922 if (0 == mNativeClass) return false; // client isn't initialized 4923 if (inFullScreenMode()) return false; 4924 if (mSelectingText) return true; 4925 nativeResetSelection(); 4926 if (selectWord && !nativeWordSelection(x, y)) { 4927 selectionDone(); 4928 return false; 4929 } 4930 mSelectCallback = new SelectActionModeCallback(); 4931 mSelectCallback.setWebView(this); 4932 if (startActionMode(mSelectCallback) == null) { 4933 // There is no ActionMode, so do not allow the user to modify a 4934 // selection. 4935 selectionDone(); 4936 return false; 4937 } 4938 mExtendSelection = false; 4939 mSelectingText = mDrawSelectionPointer = true; 4940 // don't let the picture change during text selection 4941 WebViewCore.pauseUpdatePicture(mWebViewCore); 4942 if (nativeHasCursorNode()) { 4943 Rect rect = nativeCursorNodeBounds(); 4944 mSelectX = contentToViewX(rect.left); 4945 mSelectY = contentToViewY(rect.top); 4946 } else if (mLastTouchY > getVisibleTitleHeight()) { 4947 mSelectX = mScrollX + mLastTouchX; 4948 mSelectY = mScrollY + mLastTouchY; 4949 } else { 4950 mSelectX = mScrollX + getViewWidth() / 2; 4951 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4952 } 4953 nativeHideCursor(); 4954 mMinAutoScrollX = 0; 4955 mMaxAutoScrollX = getViewWidth(); 4956 mMinAutoScrollY = 0; 4957 mMaxAutoScrollY = getViewHeightWithTitle(); 4958 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4959 viewToContentY(mSelectY), mScrollingLayerRect, 4960 mScrollingLayerBounds); 4961 if (mScrollingLayer != 0) { 4962 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4963 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4964 contentToViewX(mScrollingLayerBounds.left)); 4965 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4966 contentToViewX(mScrollingLayerBounds.right)); 4967 } 4968 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4969 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4970 contentToViewY(mScrollingLayerBounds.top)); 4971 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4972 contentToViewY(mScrollingLayerBounds.bottom)); 4973 } 4974 } 4975 mMinAutoScrollX += SELECT_SCROLL; 4976 mMaxAutoScrollX -= SELECT_SCROLL; 4977 mMinAutoScrollY += SELECT_SCROLL; 4978 mMaxAutoScrollY -= SELECT_SCROLL; 4979 return true; 4980 } 4981 4982 /** 4983 * Use this method to put the WebView into text selection mode. 4984 * Do not rely on this functionality; it will be deprecated in the future. 4985 */ 4986 public void emulateShiftHeld() { 4987 setUpSelect(false, 0, 0); 4988 } 4989 4990 /** 4991 * Select all of the text in this WebView. 4992 * 4993 * @hide pending API council approval. 4994 */ 4995 public void selectAll() { 4996 if (0 == mNativeClass) return; // client isn't initialized 4997 if (inFullScreenMode()) return; 4998 if (!mSelectingText) { 4999 // retrieve a point somewhere within the text 5000 Point select = nativeSelectableText(); 5001 if (!selectText(select.x, select.y)) return; 5002 } 5003 nativeSelectAll(); 5004 mDrawSelectionPointer = false; 5005 mExtendSelection = true; 5006 invalidate(); 5007 } 5008 5009 /** 5010 * Called when the selection has been removed. 5011 */ 5012 void selectionDone() { 5013 if (mSelectingText) { 5014 mSelectingText = false; 5015 // finish is idempotent, so this is fine even if selectionDone was 5016 // called by mSelectCallback.onDestroyActionMode 5017 mSelectCallback.finish(); 5018 mSelectCallback = null; 5019 WebViewCore.resumePriority(); 5020 WebViewCore.resumeUpdatePicture(mWebViewCore); 5021 invalidate(); // redraw without selection 5022 mAutoScrollX = 0; 5023 mAutoScrollY = 0; 5024 mSentAutoScrollMessage = false; 5025 } 5026 } 5027 5028 /** 5029 * Copy the selection to the clipboard 5030 * 5031 * @hide pending API council approval. 5032 */ 5033 public boolean copySelection() { 5034 boolean copiedSomething = false; 5035 String selection = getSelection(); 5036 if (selection != null && selection != "") { 5037 if (DebugFlags.WEB_VIEW) { 5038 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5039 } 5040 Toast.makeText(mContext 5041 , com.android.internal.R.string.text_copied 5042 , Toast.LENGTH_SHORT).show(); 5043 copiedSomething = true; 5044 ClipboardManager cm = (ClipboardManager)getContext() 5045 .getSystemService(Context.CLIPBOARD_SERVICE); 5046 cm.setText(selection); 5047 } 5048 invalidate(); // remove selection region and pointer 5049 return copiedSomething; 5050 } 5051 5052 /** 5053 * @hide pending API Council approval. 5054 */ 5055 public SearchBox getSearchBox() { 5056 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5057 return null; 5058 } 5059 return mWebViewCore.getBrowserFrame().getSearchBox(); 5060 } 5061 5062 /** 5063 * Returns the currently highlighted text as a string. 5064 */ 5065 String getSelection() { 5066 if (mNativeClass == 0) return ""; 5067 return nativeGetSelection(); 5068 } 5069 5070 @Override 5071 protected void onAttachedToWindow() { 5072 super.onAttachedToWindow(); 5073 if (hasWindowFocus()) setActive(true); 5074 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5075 if (mGlobalLayoutListener == null) { 5076 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5077 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5078 } 5079 if (mScrollChangedListener == null) { 5080 mScrollChangedListener = new InnerScrollChangedListener(); 5081 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5082 } 5083 5084 addAccessibilityApisToJavaScript(); 5085 5086 mTouchEventQueue.reset(); 5087 } 5088 5089 @Override 5090 protected void onDetachedFromWindow() { 5091 clearHelpers(); 5092 mZoomManager.dismissZoomPicker(); 5093 if (hasWindowFocus()) setActive(false); 5094 5095 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5096 if (mGlobalLayoutListener != null) { 5097 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5098 mGlobalLayoutListener = null; 5099 } 5100 if (mScrollChangedListener != null) { 5101 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5102 mScrollChangedListener = null; 5103 } 5104 5105 removeAccessibilityApisFromJavaScript(); 5106 5107 super.onDetachedFromWindow(); 5108 } 5109 5110 @Override 5111 protected void onVisibilityChanged(View changedView, int visibility) { 5112 super.onVisibilityChanged(changedView, visibility); 5113 // The zoomManager may be null if the webview is created from XML that 5114 // specifies the view's visibility param as not visible (see http://b/2794841) 5115 if (visibility != View.VISIBLE && mZoomManager != null) { 5116 mZoomManager.dismissZoomPicker(); 5117 } 5118 } 5119 5120 /** 5121 * @deprecated WebView no longer needs to implement 5122 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5123 */ 5124 @Deprecated 5125 public void onChildViewAdded(View parent, View child) {} 5126 5127 /** 5128 * @deprecated WebView no longer needs to implement 5129 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5130 */ 5131 @Deprecated 5132 public void onChildViewRemoved(View p, View child) {} 5133 5134 /** 5135 * @deprecated WebView should not have implemented 5136 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5137 */ 5138 @Deprecated 5139 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5140 } 5141 5142 void setActive(boolean active) { 5143 if (active) { 5144 if (hasFocus()) { 5145 // If our window regained focus, and we have focus, then begin 5146 // drawing the cursor ring 5147 mDrawCursorRing = true; 5148 setFocusControllerActive(true); 5149 if (mNativeClass != 0) { 5150 nativeRecordButtons(true, false, true); 5151 } 5152 } else { 5153 if (!inEditingMode()) { 5154 // If our window gained focus, but we do not have it, do not 5155 // draw the cursor ring. 5156 mDrawCursorRing = false; 5157 setFocusControllerActive(false); 5158 } 5159 // We do not call nativeRecordButtons here because we assume 5160 // that when we lost focus, or window focus, it got called with 5161 // false for the first parameter 5162 } 5163 } else { 5164 if (!mZoomManager.isZoomPickerVisible()) { 5165 /* 5166 * The external zoom controls come in their own window, so our 5167 * window loses focus. Our policy is to not draw the cursor ring 5168 * if our window is not focused, but this is an exception since 5169 * the user can still navigate the web page with the zoom 5170 * controls showing. 5171 */ 5172 mDrawCursorRing = false; 5173 } 5174 mKeysPressed.clear(); 5175 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5176 mTouchMode = TOUCH_DONE_MODE; 5177 if (mNativeClass != 0) { 5178 nativeRecordButtons(false, false, true); 5179 } 5180 setFocusControllerActive(false); 5181 } 5182 invalidate(); 5183 } 5184 5185 // To avoid drawing the cursor ring, and remove the TextView when our window 5186 // loses focus. 5187 @Override 5188 public void onWindowFocusChanged(boolean hasWindowFocus) { 5189 setActive(hasWindowFocus); 5190 if (hasWindowFocus) { 5191 JWebCoreJavaBridge.setActiveWebView(this); 5192 } else { 5193 JWebCoreJavaBridge.removeActiveWebView(this); 5194 } 5195 super.onWindowFocusChanged(hasWindowFocus); 5196 } 5197 5198 /* 5199 * Pass a message to WebCore Thread, telling the WebCore::Page's 5200 * FocusController to be "inactive" so that it will 5201 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5202 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5203 */ 5204 /* package */ void setFocusControllerActive(boolean active) { 5205 if (mWebViewCore == null) return; 5206 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5207 // Need to send this message after the document regains focus. 5208 if (active && mListBoxMessage != null) { 5209 mWebViewCore.sendMessage(mListBoxMessage); 5210 mListBoxMessage = null; 5211 } 5212 } 5213 5214 @Override 5215 protected void onFocusChanged(boolean focused, int direction, 5216 Rect previouslyFocusedRect) { 5217 if (DebugFlags.WEB_VIEW) { 5218 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5219 } 5220 if (focused) { 5221 // When we regain focus, if we have window focus, resume drawing 5222 // the cursor ring 5223 if (hasWindowFocus()) { 5224 mDrawCursorRing = true; 5225 if (mNativeClass != 0) { 5226 nativeRecordButtons(true, false, true); 5227 } 5228 setFocusControllerActive(true); 5229 //} else { 5230 // The WebView has gained focus while we do not have 5231 // windowfocus. When our window lost focus, we should have 5232 // called nativeRecordButtons(false...) 5233 } 5234 } else { 5235 // When we lost focus, unless focus went to the TextView (which is 5236 // true if we are in editing mode), stop drawing the cursor ring. 5237 if (!inEditingMode()) { 5238 mDrawCursorRing = false; 5239 if (mNativeClass != 0) { 5240 nativeRecordButtons(false, false, true); 5241 } 5242 setFocusControllerActive(false); 5243 } 5244 mKeysPressed.clear(); 5245 } 5246 5247 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5248 } 5249 5250 void setGLRectViewport() { 5251 // Use the getGlobalVisibleRect() to get the intersection among the parents 5252 // visible == false means we're clipped - send a null rect down to indicate that 5253 // we should not draw 5254 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5255 if (visible) { 5256 // Then need to invert the Y axis, just for GL 5257 View rootView = getRootView(); 5258 int rootViewHeight = rootView.getHeight(); 5259 mViewRectViewport.set(mGLRectViewport); 5260 int savedWebViewBottom = mGLRectViewport.bottom; 5261 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5262 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5263 mGLViewportEmpty = false; 5264 } else { 5265 mGLViewportEmpty = true; 5266 } 5267 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5268 mGLViewportEmpty ? null : mViewRectViewport); 5269 } 5270 5271 /** 5272 * @hide 5273 */ 5274 @Override 5275 protected boolean setFrame(int left, int top, int right, int bottom) { 5276 boolean changed = super.setFrame(left, top, right, bottom); 5277 if (!changed && mHeightCanMeasure) { 5278 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5279 // in WebViewCore after we get the first layout. We do call 5280 // requestLayout() when we get contentSizeChanged(). But the View 5281 // system won't call onSizeChanged if the dimension is not changed. 5282 // In this case, we need to call sendViewSizeZoom() explicitly to 5283 // notify the WebKit about the new dimensions. 5284 sendViewSizeZoom(false); 5285 } 5286 setGLRectViewport(); 5287 return changed; 5288 } 5289 5290 @Override 5291 protected void onSizeChanged(int w, int h, int ow, int oh) { 5292 super.onSizeChanged(w, h, ow, oh); 5293 5294 // adjust the max viewport width depending on the view dimensions. This 5295 // is to ensure the scaling is not going insane. So do not shrink it if 5296 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5297 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5298 if (newMaxViewportWidth > sMaxViewportWidth) { 5299 sMaxViewportWidth = newMaxViewportWidth; 5300 } 5301 5302 mZoomManager.onSizeChanged(w, h, ow, oh); 5303 } 5304 5305 @Override 5306 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5307 super.onScrollChanged(l, t, oldl, oldt); 5308 if (!mInOverScrollMode) { 5309 sendOurVisibleRect(); 5310 // update WebKit if visible title bar height changed. The logic is same 5311 // as getVisibleTitleHeight. 5312 int titleHeight = getTitleHeight(); 5313 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5314 sendViewSizeZoom(false); 5315 } 5316 } 5317 } 5318 5319 @Override 5320 public boolean dispatchKeyEvent(KeyEvent event) { 5321 switch (event.getAction()) { 5322 case KeyEvent.ACTION_DOWN: 5323 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5324 break; 5325 case KeyEvent.ACTION_MULTIPLE: 5326 // Always accept the action. 5327 break; 5328 case KeyEvent.ACTION_UP: 5329 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5330 if (location == -1) { 5331 // We did not receive the key down for this key, so do not 5332 // handle the key up. 5333 return false; 5334 } else { 5335 // We did receive the key down. Handle the key up, and 5336 // remove it from our pressed keys. 5337 mKeysPressed.remove(location); 5338 } 5339 break; 5340 default: 5341 // Accept the action. This should not happen, unless a new 5342 // action is added to KeyEvent. 5343 break; 5344 } 5345 if (inEditingMode() && mWebTextView.isFocused()) { 5346 // Ensure that the WebTextView gets the event, even if it does 5347 // not currently have a bounds. 5348 return mWebTextView.dispatchKeyEvent(event); 5349 } else { 5350 return super.dispatchKeyEvent(event); 5351 } 5352 } 5353 5354 // Here are the snap align logic: 5355 // 1. If it starts nearly horizontally or vertically, snap align; 5356 // 2. If there is a dramitic direction change, let it go; 5357 // 3. If there is a same direction back and forth, lock it. 5358 5359 // adjustable parameters 5360 private int mMinLockSnapReverseDistance; 5361 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5362 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5363 5364 private boolean hitFocusedPlugin(int contentX, int contentY) { 5365 if (DebugFlags.WEB_VIEW) { 5366 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5367 Rect r = nativeFocusNodeBounds(); 5368 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5369 + ", " + r.right + ", " + r.bottom + ")"); 5370 } 5371 return nativeFocusIsPlugin() 5372 && nativeFocusNodeBounds().contains(contentX, contentY); 5373 } 5374 5375 private boolean shouldForwardTouchEvent() { 5376 return mFullScreenHolder != null || (mForwardTouchEvents 5377 && !mSelectingText 5378 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5379 && mPreventDefault != PREVENT_DEFAULT_NO); 5380 } 5381 5382 private boolean inFullScreenMode() { 5383 return mFullScreenHolder != null; 5384 } 5385 5386 private void dismissFullScreenMode() { 5387 if (inFullScreenMode()) { 5388 mFullScreenHolder.dismiss(); 5389 mFullScreenHolder = null; 5390 } 5391 } 5392 5393 void onPinchToZoomAnimationStart() { 5394 // cancel the single touch handling 5395 cancelTouch(); 5396 onZoomAnimationStart(); 5397 } 5398 5399 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5400 onZoomAnimationEnd(); 5401 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5402 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5403 // as it may trigger the unwanted fling. 5404 mTouchMode = TOUCH_PINCH_DRAG; 5405 mConfirmMove = true; 5406 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5407 } 5408 5409 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5410 // layer is found. 5411 private void startScrollingLayer(float x, float y) { 5412 int contentX = viewToContentX((int) x + mScrollX); 5413 int contentY = viewToContentY((int) y + mScrollY); 5414 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5415 mScrollingLayerRect, mScrollingLayerBounds); 5416 if (mScrollingLayer != 0) { 5417 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5418 } 5419 } 5420 5421 // 1/(density * density) used to compute the distance between points. 5422 // Computed in init(). 5423 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5424 5425 // The distance between two points reported in onTouchEvent scaled by the 5426 // density of the screen. 5427 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5428 5429 @Override 5430 public boolean onTouchEvent(MotionEvent ev) { 5431 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5432 return false; 5433 } 5434 5435 if (DebugFlags.WEB_VIEW) { 5436 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5437 + " mTouchMode=" + mTouchMode 5438 + " numPointers=" + ev.getPointerCount()); 5439 } 5440 5441 // If WebKit wasn't interested in this multitouch gesture, enqueue 5442 // the event for handling directly rather than making the round trip 5443 // to WebKit and back. 5444 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5445 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5446 } else { 5447 mTouchEventQueue.enqueueTouchEvent(ev); 5448 } 5449 5450 // Since all events are handled asynchronously, we always want the gesture stream. 5451 return true; 5452 } 5453 5454 /* 5455 * Common code for single touch and multi-touch. 5456 * (x, y) denotes current focus point, which is the touch point for single touch 5457 * and the middle point for multi-touch. 5458 */ 5459 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5460 long eventTime = ev.getEventTime(); 5461 5462 // Due to the touch screen edge effect, a touch closer to the edge 5463 // always snapped to the edge. As getViewWidth() can be different from 5464 // getWidth() due to the scrollbar, adjusting the point to match 5465 // getViewWidth(). Same applied to the height. 5466 x = Math.min(x, getViewWidth() - 1); 5467 y = Math.min(y, getViewHeightWithTitle() - 1); 5468 5469 int deltaX = mLastTouchX - x; 5470 int deltaY = mLastTouchY - y; 5471 int contentX = viewToContentX(x + mScrollX); 5472 int contentY = viewToContentY(y + mScrollY); 5473 5474 switch (action) { 5475 case MotionEvent.ACTION_DOWN: { 5476 mPreventDefault = PREVENT_DEFAULT_NO; 5477 mConfirmMove = false; 5478 mInitialHitTestResult = null; 5479 if (!mScroller.isFinished()) { 5480 // stop the current scroll animation, but if this is 5481 // the start of a fling, allow it to add to the current 5482 // fling's velocity 5483 mScroller.abortAnimation(); 5484 mTouchMode = TOUCH_DRAG_START_MODE; 5485 mConfirmMove = true; 5486 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5487 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5488 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5489 if (getSettings().supportTouchOnly()) { 5490 removeTouchHighlight(true); 5491 } 5492 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5493 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5494 } else { 5495 // commit the short press action for the previous tap 5496 doShortPress(); 5497 mTouchMode = TOUCH_INIT_MODE; 5498 mDeferTouchProcess = (!inFullScreenMode() 5499 && mForwardTouchEvents) ? hitFocusedPlugin( 5500 contentX, contentY) : false; 5501 } 5502 } else { // the normal case 5503 mTouchMode = TOUCH_INIT_MODE; 5504 mDeferTouchProcess = (!inFullScreenMode() 5505 && mForwardTouchEvents) ? hitFocusedPlugin( 5506 contentX, contentY) : false; 5507 mWebViewCore.sendMessage( 5508 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5509 if (getSettings().supportTouchOnly()) { 5510 TouchHighlightData data = new TouchHighlightData(); 5511 data.mX = contentX; 5512 data.mY = contentY; 5513 data.mSlop = viewToContentDimension(mNavSlop); 5514 mWebViewCore.sendMessageDelayed( 5515 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5516 ViewConfiguration.getTapTimeout()); 5517 if (DEBUG_TOUCH_HIGHLIGHT) { 5518 if (getSettings().getNavDump()) { 5519 mTouchHighlightX = (int) x + mScrollX; 5520 mTouchHighlightY = (int) y + mScrollY; 5521 mPrivateHandler.postDelayed(new Runnable() { 5522 public void run() { 5523 mTouchHighlightX = mTouchHighlightY = 0; 5524 invalidate(); 5525 } 5526 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5527 } 5528 } 5529 } 5530 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5531 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5532 (eventTime - mLastTouchUpTime), eventTime); 5533 } 5534 if (mSelectingText) { 5535 mDrawSelectionPointer = false; 5536 mSelectionStarted = nativeStartSelection(contentX, contentY); 5537 if (DebugFlags.WEB_VIEW) { 5538 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5539 } 5540 invalidate(); 5541 } 5542 } 5543 // Trigger the link 5544 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5545 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5546 mPrivateHandler.sendEmptyMessageDelayed( 5547 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5548 mPrivateHandler.sendEmptyMessageDelayed( 5549 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5550 if (inFullScreenMode() || mDeferTouchProcess) { 5551 mPreventDefault = PREVENT_DEFAULT_YES; 5552 } else if (mForwardTouchEvents) { 5553 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5554 } else { 5555 mPreventDefault = PREVENT_DEFAULT_NO; 5556 } 5557 // pass the touch events from UI thread to WebCore thread 5558 if (shouldForwardTouchEvent()) { 5559 TouchEventData ted = new TouchEventData(); 5560 ted.mAction = action; 5561 ted.mIds = new int[1]; 5562 ted.mIds[0] = ev.getPointerId(0); 5563 ted.mPoints = new Point[1]; 5564 ted.mPoints[0] = new Point(contentX, contentY); 5565 ted.mPointsInView = new Point[1]; 5566 ted.mPointsInView[0] = new Point(x, y); 5567 ted.mMetaState = ev.getMetaState(); 5568 ted.mReprocess = mDeferTouchProcess; 5569 ted.mNativeLayer = nativeScrollableLayer( 5570 contentX, contentY, ted.mNativeLayerRect, null); 5571 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5572 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5573 if (mDeferTouchProcess) { 5574 // still needs to set them for compute deltaX/Y 5575 mLastTouchX = x; 5576 mLastTouchY = y; 5577 break; 5578 } 5579 if (!inFullScreenMode()) { 5580 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5581 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5582 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5583 action, 0), TAP_TIMEOUT); 5584 } 5585 } 5586 } 5587 startTouch(x, y, eventTime); 5588 break; 5589 } 5590 case MotionEvent.ACTION_MOVE: { 5591 boolean firstMove = false; 5592 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5593 >= mTouchSlopSquare) { 5594 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5595 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5596 mConfirmMove = true; 5597 firstMove = true; 5598 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5599 mTouchMode = TOUCH_INIT_MODE; 5600 } 5601 if (getSettings().supportTouchOnly()) { 5602 removeTouchHighlight(true); 5603 } 5604 } 5605 // pass the touch events from UI thread to WebCore thread 5606 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5607 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5608 TouchEventData ted = new TouchEventData(); 5609 ted.mAction = action; 5610 ted.mIds = new int[1]; 5611 ted.mIds[0] = ev.getPointerId(0); 5612 ted.mPoints = new Point[1]; 5613 ted.mPoints[0] = new Point(contentX, contentY); 5614 ted.mPointsInView = new Point[1]; 5615 ted.mPointsInView[0] = new Point(x, y); 5616 ted.mMetaState = ev.getMetaState(); 5617 ted.mReprocess = mDeferTouchProcess; 5618 ted.mNativeLayer = mScrollingLayer; 5619 ted.mNativeLayerRect.set(mScrollingLayerRect); 5620 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5621 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5622 mLastSentTouchTime = eventTime; 5623 if (mDeferTouchProcess) { 5624 break; 5625 } 5626 if (firstMove && !inFullScreenMode()) { 5627 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5628 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5629 action, 0), TAP_TIMEOUT); 5630 } 5631 } 5632 if (mTouchMode == TOUCH_DONE_MODE 5633 || mPreventDefault == PREVENT_DEFAULT_YES) { 5634 // no dragging during scroll zoom animation, or when prevent 5635 // default is yes 5636 break; 5637 } 5638 if (mVelocityTracker == null) { 5639 Log.e(LOGTAG, "Got null mVelocityTracker when " 5640 + "mPreventDefault = " + mPreventDefault 5641 + " mDeferTouchProcess = " + mDeferTouchProcess 5642 + " mTouchMode = " + mTouchMode); 5643 } else { 5644 mVelocityTracker.addMovement(ev); 5645 } 5646 if (mSelectingText && mSelectionStarted) { 5647 if (DebugFlags.WEB_VIEW) { 5648 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5649 } 5650 ViewParent parent = getParent(); 5651 if (parent != null) { 5652 parent.requestDisallowInterceptTouchEvent(true); 5653 } 5654 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5655 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5656 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5657 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5658 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5659 && !mSentAutoScrollMessage) { 5660 mSentAutoScrollMessage = true; 5661 mPrivateHandler.sendEmptyMessageDelayed( 5662 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5663 } 5664 if (deltaX != 0 || deltaY != 0) { 5665 nativeExtendSelection(contentX, contentY); 5666 invalidate(); 5667 } 5668 break; 5669 } 5670 5671 if (mTouchMode != TOUCH_DRAG_MODE && 5672 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5673 5674 if (!mConfirmMove) { 5675 break; 5676 } 5677 5678 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5679 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5680 // track mLastTouchTime as we may need to do fling at 5681 // ACTION_UP 5682 mLastTouchTime = eventTime; 5683 break; 5684 } 5685 5686 // Only lock dragging to one axis if we don't have a scale in progress. 5687 // Scaling implies free-roaming movement. Note this is only ever a question 5688 // if mZoomManager.supportsPanDuringZoom() is true. 5689 final ScaleGestureDetector detector = 5690 mZoomManager.getMultiTouchGestureDetector(); 5691 if (detector == null || !detector.isInProgress()) { 5692 // if it starts nearly horizontal or vertical, enforce it 5693 int ax = Math.abs(deltaX); 5694 int ay = Math.abs(deltaY); 5695 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5696 mSnapScrollMode = SNAP_X; 5697 mSnapPositive = deltaX > 0; 5698 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5699 mSnapScrollMode = SNAP_Y; 5700 mSnapPositive = deltaY > 0; 5701 } 5702 } 5703 5704 mTouchMode = TOUCH_DRAG_MODE; 5705 mLastTouchX = x; 5706 mLastTouchY = y; 5707 deltaX = 0; 5708 deltaY = 0; 5709 5710 startScrollingLayer(x, y); 5711 startDrag(); 5712 } 5713 5714 // do pan 5715 boolean done = false; 5716 boolean keepScrollBarsVisible = false; 5717 if (deltaX == 0 && deltaY == 0) { 5718 keepScrollBarsVisible = done = true; 5719 } else { 5720 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5721 int ax = Math.abs(deltaX); 5722 int ay = Math.abs(deltaY); 5723 if (mSnapScrollMode == SNAP_X) { 5724 // radical change means getting out of snap mode 5725 if (ay > MAX_SLOPE_FOR_DIAG * ax 5726 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5727 mSnapScrollMode = SNAP_NONE; 5728 } 5729 // reverse direction means lock in the snap mode 5730 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5731 (mSnapPositive 5732 ? deltaX < -mMinLockSnapReverseDistance 5733 : deltaX > mMinLockSnapReverseDistance)) { 5734 mSnapScrollMode |= SNAP_LOCK; 5735 } 5736 } else { 5737 // radical change means getting out of snap mode 5738 if (ax > MAX_SLOPE_FOR_DIAG * ay 5739 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5740 mSnapScrollMode = SNAP_NONE; 5741 } 5742 // reverse direction means lock in the snap mode 5743 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5744 (mSnapPositive 5745 ? deltaY < -mMinLockSnapReverseDistance 5746 : deltaY > mMinLockSnapReverseDistance)) { 5747 mSnapScrollMode |= SNAP_LOCK; 5748 } 5749 } 5750 } 5751 if (mSnapScrollMode != SNAP_NONE) { 5752 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5753 deltaY = 0; 5754 } else { 5755 deltaX = 0; 5756 } 5757 } 5758 if ((deltaX | deltaY) != 0) { 5759 if (deltaX != 0) { 5760 mLastTouchX = x; 5761 } 5762 if (deltaY != 0) { 5763 mLastTouchY = y; 5764 } 5765 mHeldMotionless = MOTIONLESS_FALSE; 5766 } 5767 mLastTouchTime = eventTime; 5768 } 5769 5770 doDrag(deltaX, deltaY); 5771 5772 // Turn off scrollbars when dragging a layer. 5773 if (keepScrollBarsVisible && 5774 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5775 if (mHeldMotionless != MOTIONLESS_TRUE) { 5776 mHeldMotionless = MOTIONLESS_TRUE; 5777 invalidate(); 5778 } 5779 // keep the scrollbar on the screen even there is no scroll 5780 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5781 false); 5782 // return false to indicate that we can't pan out of the 5783 // view space 5784 return !done; 5785 } 5786 break; 5787 } 5788 case MotionEvent.ACTION_UP: { 5789 if (!isFocused()) requestFocus(); 5790 // pass the touch events from UI thread to WebCore thread 5791 if (shouldForwardTouchEvent()) { 5792 TouchEventData ted = new TouchEventData(); 5793 ted.mIds = new int[1]; 5794 ted.mIds[0] = ev.getPointerId(0); 5795 ted.mAction = action; 5796 ted.mPoints = new Point[1]; 5797 ted.mPoints[0] = new Point(contentX, contentY); 5798 ted.mPointsInView = new Point[1]; 5799 ted.mPointsInView[0] = new Point(x, y); 5800 ted.mMetaState = ev.getMetaState(); 5801 ted.mReprocess = mDeferTouchProcess; 5802 ted.mNativeLayer = mScrollingLayer; 5803 ted.mNativeLayerRect.set(mScrollingLayerRect); 5804 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5805 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5806 } 5807 mLastTouchUpTime = eventTime; 5808 if (mSentAutoScrollMessage) { 5809 mAutoScrollX = mAutoScrollY = 0; 5810 } 5811 switch (mTouchMode) { 5812 case TOUCH_DOUBLE_TAP_MODE: // double tap 5813 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5814 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5815 if (inFullScreenMode() || mDeferTouchProcess) { 5816 TouchEventData ted = new TouchEventData(); 5817 ted.mIds = new int[1]; 5818 ted.mIds[0] = ev.getPointerId(0); 5819 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5820 ted.mPoints = new Point[1]; 5821 ted.mPoints[0] = new Point(contentX, contentY); 5822 ted.mPointsInView = new Point[1]; 5823 ted.mPointsInView[0] = new Point(x, y); 5824 ted.mMetaState = ev.getMetaState(); 5825 ted.mReprocess = mDeferTouchProcess; 5826 ted.mNativeLayer = nativeScrollableLayer( 5827 contentX, contentY, 5828 ted.mNativeLayerRect, null); 5829 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5830 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5831 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5832 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5833 mTouchMode = TOUCH_DONE_MODE; 5834 } 5835 break; 5836 case TOUCH_INIT_MODE: // tap 5837 case TOUCH_SHORTPRESS_START_MODE: 5838 case TOUCH_SHORTPRESS_MODE: 5839 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5840 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5841 if (mConfirmMove) { 5842 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5843 " WebCore's response for touch down."); 5844 if (mPreventDefault != PREVENT_DEFAULT_YES 5845 && (computeMaxScrollX() > 0 5846 || computeMaxScrollY() > 0)) { 5847 // If the user has performed a very quick touch 5848 // sequence it is possible that we may get here 5849 // before WebCore has had a chance to process the events. 5850 // In this case, any call to preventDefault in the 5851 // JS touch handler will not have been executed yet. 5852 // Hence we will see both the UI (now) and WebCore 5853 // (when context switches) handling the event, 5854 // regardless of whether the web developer actually 5855 // doeses preventDefault in their touch handler. This 5856 // is the nature of our asynchronous touch model. 5857 5858 // we will not rewrite drag code here, but we 5859 // will try fling if it applies. 5860 WebViewCore.reducePriority(); 5861 // to get better performance, pause updating the 5862 // picture 5863 WebViewCore.pauseUpdatePicture(mWebViewCore); 5864 // fall through to TOUCH_DRAG_MODE 5865 } else { 5866 // WebKit may consume the touch event and modify 5867 // DOM. drawContentPicture() will be called with 5868 // animateSroll as true for better performance. 5869 // Force redraw in high-quality. 5870 invalidate(); 5871 break; 5872 } 5873 } else { 5874 if (mSelectingText) { 5875 // tapping on selection or controls does nothing 5876 if (!nativeHitSelection(contentX, contentY)) { 5877 selectionDone(); 5878 } 5879 break; 5880 } 5881 // only trigger double tap if the WebView is 5882 // scalable 5883 if (mTouchMode == TOUCH_INIT_MODE 5884 && (canZoomIn() || canZoomOut())) { 5885 mPrivateHandler.sendEmptyMessageDelayed( 5886 RELEASE_SINGLE_TAP, ViewConfiguration 5887 .getDoubleTapTimeout()); 5888 } else { 5889 doShortPress(); 5890 } 5891 break; 5892 } 5893 case TOUCH_DRAG_MODE: 5894 case TOUCH_DRAG_LAYER_MODE: 5895 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5896 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5897 // if the user waits a while w/o moving before the 5898 // up, we don't want to do a fling 5899 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5900 if (mVelocityTracker == null) { 5901 Log.e(LOGTAG, "Got null mVelocityTracker when " 5902 + "mPreventDefault = " 5903 + mPreventDefault 5904 + " mDeferTouchProcess = " 5905 + mDeferTouchProcess); 5906 } else { 5907 mVelocityTracker.addMovement(ev); 5908 } 5909 // set to MOTIONLESS_IGNORE so that it won't keep 5910 // removing and sending message in 5911 // drawCoreAndCursorRing() 5912 mHeldMotionless = MOTIONLESS_IGNORE; 5913 doFling(); 5914 break; 5915 } else { 5916 if (mScroller.springBack(mScrollX, mScrollY, 0, 5917 computeMaxScrollX(), 0, 5918 computeMaxScrollY())) { 5919 invalidate(); 5920 } 5921 } 5922 // redraw in high-quality, as we're done dragging 5923 mHeldMotionless = MOTIONLESS_TRUE; 5924 invalidate(); 5925 // fall through 5926 case TOUCH_DRAG_START_MODE: 5927 // TOUCH_DRAG_START_MODE should not happen for the real 5928 // device as we almost certain will get a MOVE. But this 5929 // is possible on emulator. 5930 mLastVelocity = 0; 5931 WebViewCore.resumePriority(); 5932 if (!mSelectingText) { 5933 WebViewCore.resumeUpdatePicture(mWebViewCore); 5934 } 5935 break; 5936 } 5937 stopTouch(); 5938 break; 5939 } 5940 case MotionEvent.ACTION_CANCEL: { 5941 if (mTouchMode == TOUCH_DRAG_MODE) { 5942 mScroller.springBack(mScrollX, mScrollY, 0, 5943 computeMaxScrollX(), 0, computeMaxScrollY()); 5944 invalidate(); 5945 } 5946 cancelWebCoreTouchEvent(contentX, contentY, false); 5947 cancelTouch(); 5948 break; 5949 } 5950 } 5951 return true; 5952 } 5953 5954 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 5955 TouchEventData ted = new TouchEventData(); 5956 ted.mAction = ev.getActionMasked(); 5957 final int count = ev.getPointerCount(); 5958 ted.mIds = new int[count]; 5959 ted.mPoints = new Point[count]; 5960 ted.mPointsInView = 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 ted.mPointsInView[c] = new Point((int) ev.getX(c), (int) ev.getY(c)); 5967 } 5968 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 5969 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 5970 ted.mActionIndex = ev.getActionIndex(); 5971 } 5972 ted.mMetaState = ev.getMetaState(); 5973 ted.mReprocess = true; 5974 ted.mMotionEvent = MotionEvent.obtain(ev); 5975 ted.mSequence = sequence; 5976 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5977 cancelLongPress(); 5978 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5979 } 5980 5981 void handleMultiTouchInWebView(MotionEvent ev) { 5982 if (DebugFlags.WEB_VIEW) { 5983 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5984 + " mTouchMode=" + mTouchMode 5985 + " numPointers=" + ev.getPointerCount() 5986 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5987 } 5988 5989 final ScaleGestureDetector detector = 5990 mZoomManager.getMultiTouchGestureDetector(); 5991 5992 // A few apps use WebView but don't instantiate gesture detector. 5993 // We don't need to support multi touch for them. 5994 if (detector == null) return; 5995 5996 float x = ev.getX(); 5997 float y = ev.getY(); 5998 5999 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6000 detector.onTouchEvent(ev); 6001 6002 if (detector.isInProgress()) { 6003 if (DebugFlags.WEB_VIEW) { 6004 Log.v(LOGTAG, "detector is in progress"); 6005 } 6006 mLastTouchTime = ev.getEventTime(); 6007 x = detector.getFocusX(); 6008 y = detector.getFocusY(); 6009 6010 cancelLongPress(); 6011 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6012 if (!mZoomManager.supportsPanDuringZoom()) { 6013 return; 6014 } 6015 mTouchMode = TOUCH_DRAG_MODE; 6016 if (mVelocityTracker == null) { 6017 mVelocityTracker = VelocityTracker.obtain(); 6018 } 6019 } 6020 } 6021 6022 int action = ev.getActionMasked(); 6023 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6024 cancelTouch(); 6025 action = MotionEvent.ACTION_DOWN; 6026 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() == 2) { 6027 // set mLastTouchX/Y to the remaining point 6028 mLastTouchX = Math.round(x); 6029 mLastTouchY = Math.round(y); 6030 } else if (action == MotionEvent.ACTION_MOVE) { 6031 // negative x or y indicate it is on the edge, skip it. 6032 if (x < 0 || y < 0) { 6033 return; 6034 } 6035 } 6036 6037 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6038 } 6039 6040 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6041 if (shouldForwardTouchEvent()) { 6042 if (removeEvents) { 6043 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6044 } 6045 TouchEventData ted = new TouchEventData(); 6046 ted.mIds = new int[1]; 6047 ted.mIds[0] = 0; 6048 ted.mPoints = new Point[1]; 6049 ted.mPoints[0] = new Point(x, y); 6050 ted.mPointsInView = new Point[1]; 6051 int viewX = contentToViewX(x) - mScrollX; 6052 int viewY = contentToViewY(y) - mScrollY; 6053 ted.mPointsInView[0] = new Point(viewX, viewY); 6054 ted.mAction = MotionEvent.ACTION_CANCEL; 6055 ted.mNativeLayer = nativeScrollableLayer( 6056 x, y, ted.mNativeLayerRect, null); 6057 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6058 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6059 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6060 6061 if (removeEvents) { 6062 // Mark this after sending the message above; we should 6063 // be willing to ignore the cancel event that we just sent. 6064 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6065 } 6066 } 6067 } 6068 6069 private void startTouch(float x, float y, long eventTime) { 6070 // Remember where the motion event started 6071 mLastTouchX = Math.round(x); 6072 mLastTouchY = Math.round(y); 6073 mLastTouchTime = eventTime; 6074 mVelocityTracker = VelocityTracker.obtain(); 6075 mSnapScrollMode = SNAP_NONE; 6076 } 6077 6078 private void startDrag() { 6079 WebViewCore.reducePriority(); 6080 // to get better performance, pause updating the picture 6081 WebViewCore.pauseUpdatePicture(mWebViewCore); 6082 if (!mDragFromTextInput) { 6083 nativeHideCursor(); 6084 } 6085 6086 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6087 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6088 mZoomManager.invokeZoomPicker(); 6089 } 6090 } 6091 6092 private void doDrag(int deltaX, int deltaY) { 6093 if ((deltaX | deltaY) != 0) { 6094 int oldX = mScrollX; 6095 int oldY = mScrollY; 6096 int rangeX = computeMaxScrollX(); 6097 int rangeY = computeMaxScrollY(); 6098 int overscrollDistance = mOverscrollDistance; 6099 6100 // Check for the original scrolling layer in case we change 6101 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6102 // reached the edge of a layer but mScrollingLayer will be non-zero 6103 // if we initiated the drag on a layer. 6104 if (mScrollingLayer != 0) { 6105 final int contentX = viewToContentDimension(deltaX); 6106 final int contentY = viewToContentDimension(deltaY); 6107 6108 // Check the scrolling bounds to see if we will actually do any 6109 // scrolling. The rectangle is in document coordinates. 6110 final int maxX = mScrollingLayerRect.right; 6111 final int maxY = mScrollingLayerRect.bottom; 6112 final int resultX = Math.max(0, 6113 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6114 final int resultY = Math.max(0, 6115 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6116 6117 if (resultX != mScrollingLayerRect.left || 6118 resultY != mScrollingLayerRect.top) { 6119 // In case we switched to dragging the page. 6120 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6121 deltaX = contentX; 6122 deltaY = contentY; 6123 oldX = mScrollingLayerRect.left; 6124 oldY = mScrollingLayerRect.top; 6125 rangeX = maxX; 6126 rangeY = maxY; 6127 } else { 6128 // Scroll the main page if we are not going to scroll the 6129 // layer. This does not reset mScrollingLayer in case the 6130 // user changes directions and the layer can scroll the 6131 // other way. 6132 mTouchMode = TOUCH_DRAG_MODE; 6133 } 6134 } 6135 6136 if (mOverScrollGlow != null) { 6137 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6138 } 6139 6140 overScrollBy(deltaX, deltaY, oldX, oldY, 6141 rangeX, rangeY, 6142 mOverscrollDistance, mOverscrollDistance, true); 6143 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6144 invalidate(); 6145 } 6146 } 6147 mZoomManager.keepZoomPickerVisible(); 6148 } 6149 6150 private void stopTouch() { 6151 // we also use mVelocityTracker == null to tell us that we are 6152 // not "moving around", so we can take the slower/prettier 6153 // mode in the drawing code 6154 if (mVelocityTracker != null) { 6155 mVelocityTracker.recycle(); 6156 mVelocityTracker = null; 6157 } 6158 6159 // Release any pulled glows 6160 if (mOverScrollGlow != null) { 6161 mOverScrollGlow.releaseAll(); 6162 } 6163 } 6164 6165 private void cancelTouch() { 6166 // we also use mVelocityTracker == null to tell us that we are 6167 // not "moving around", so we can take the slower/prettier 6168 // mode in the drawing code 6169 if (mVelocityTracker != null) { 6170 mVelocityTracker.recycle(); 6171 mVelocityTracker = null; 6172 } 6173 6174 if ((mTouchMode == TOUCH_DRAG_MODE 6175 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6176 WebViewCore.resumePriority(); 6177 WebViewCore.resumeUpdatePicture(mWebViewCore); 6178 } 6179 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6180 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6181 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6182 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6183 if (getSettings().supportTouchOnly()) { 6184 removeTouchHighlight(true); 6185 } 6186 mHeldMotionless = MOTIONLESS_TRUE; 6187 mTouchMode = TOUCH_DONE_MODE; 6188 nativeHideCursor(); 6189 } 6190 6191 @Override 6192 public boolean onGenericMotionEvent(MotionEvent event) { 6193 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6194 switch (event.getAction()) { 6195 case MotionEvent.ACTION_SCROLL: { 6196 final float vscroll; 6197 final float hscroll; 6198 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6199 vscroll = 0; 6200 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6201 } else { 6202 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6203 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6204 } 6205 if (hscroll != 0 || vscroll != 0) { 6206 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6207 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6208 if (pinScrollBy(hdelta, vdelta, true, 0)) { 6209 return true; 6210 } 6211 } 6212 } 6213 } 6214 } 6215 return super.onGenericMotionEvent(event); 6216 } 6217 6218 private long mTrackballFirstTime = 0; 6219 private long mTrackballLastTime = 0; 6220 private float mTrackballRemainsX = 0.0f; 6221 private float mTrackballRemainsY = 0.0f; 6222 private int mTrackballXMove = 0; 6223 private int mTrackballYMove = 0; 6224 private boolean mSelectingText = false; 6225 private boolean mSelectionStarted = false; 6226 private boolean mExtendSelection = false; 6227 private boolean mDrawSelectionPointer = false; 6228 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6229 private static final int TRACKBALL_TIMEOUT = 200; 6230 private static final int TRACKBALL_WAIT = 100; 6231 private static final int TRACKBALL_SCALE = 400; 6232 private static final int TRACKBALL_SCROLL_COUNT = 5; 6233 private static final int TRACKBALL_MOVE_COUNT = 10; 6234 private static final int TRACKBALL_MULTIPLIER = 3; 6235 private static final int SELECT_CURSOR_OFFSET = 16; 6236 private static final int SELECT_SCROLL = 5; 6237 private int mSelectX = 0; 6238 private int mSelectY = 0; 6239 private boolean mFocusSizeChanged = false; 6240 private boolean mTrackballDown = false; 6241 private long mTrackballUpTime = 0; 6242 private long mLastCursorTime = 0; 6243 private Rect mLastCursorBounds; 6244 6245 // Set by default; BrowserActivity clears to interpret trackball data 6246 // directly for movement. Currently, the framework only passes 6247 // arrow key events, not trackball events, from one child to the next 6248 private boolean mMapTrackballToArrowKeys = true; 6249 6250 public void setMapTrackballToArrowKeys(boolean setMap) { 6251 mMapTrackballToArrowKeys = setMap; 6252 } 6253 6254 void resetTrackballTime() { 6255 mTrackballLastTime = 0; 6256 } 6257 6258 @Override 6259 public boolean onTrackballEvent(MotionEvent ev) { 6260 long time = ev.getEventTime(); 6261 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6262 if (ev.getY() > 0) pageDown(true); 6263 if (ev.getY() < 0) pageUp(true); 6264 return true; 6265 } 6266 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6267 if (mSelectingText) { 6268 return true; // discard press if copy in progress 6269 } 6270 mTrackballDown = true; 6271 if (mNativeClass == 0) { 6272 return false; 6273 } 6274 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6275 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6276 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6277 nativeSelectBestAt(mLastCursorBounds); 6278 } 6279 if (DebugFlags.WEB_VIEW) { 6280 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6281 + " time=" + time 6282 + " mLastCursorTime=" + mLastCursorTime); 6283 } 6284 if (isInTouchMode()) requestFocusFromTouch(); 6285 return false; // let common code in onKeyDown at it 6286 } 6287 if (ev.getAction() == MotionEvent.ACTION_UP) { 6288 // LONG_PRESS_CENTER is set in common onKeyDown 6289 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6290 mTrackballDown = false; 6291 mTrackballUpTime = time; 6292 if (mSelectingText) { 6293 if (mExtendSelection) { 6294 copySelection(); 6295 selectionDone(); 6296 } else { 6297 mExtendSelection = true; 6298 nativeSetExtendSelection(); 6299 invalidate(); // draw the i-beam instead of the arrow 6300 } 6301 return true; // discard press if copy in progress 6302 } 6303 if (DebugFlags.WEB_VIEW) { 6304 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6305 + " time=" + time 6306 ); 6307 } 6308 return false; // let common code in onKeyUp at it 6309 } 6310 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6311 AccessibilityManager.getInstance(mContext).isEnabled()) { 6312 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6313 return false; 6314 } 6315 if (mTrackballDown) { 6316 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6317 return true; // discard move if trackball is down 6318 } 6319 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6320 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6321 return true; 6322 } 6323 // TODO: alternatively we can do panning as touch does 6324 switchOutDrawHistory(); 6325 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6326 if (DebugFlags.WEB_VIEW) { 6327 Log.v(LOGTAG, "onTrackballEvent time=" 6328 + time + " last=" + mTrackballLastTime); 6329 } 6330 mTrackballFirstTime = time; 6331 mTrackballXMove = mTrackballYMove = 0; 6332 } 6333 mTrackballLastTime = time; 6334 if (DebugFlags.WEB_VIEW) { 6335 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6336 } 6337 mTrackballRemainsX += ev.getX(); 6338 mTrackballRemainsY += ev.getY(); 6339 doTrackball(time, ev.getMetaState()); 6340 return true; 6341 } 6342 6343 void moveSelection(float xRate, float yRate) { 6344 if (mNativeClass == 0) 6345 return; 6346 int width = getViewWidth(); 6347 int height = getViewHeight(); 6348 mSelectX += xRate; 6349 mSelectY += yRate; 6350 int maxX = width + mScrollX; 6351 int maxY = height + mScrollY; 6352 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6353 , mSelectX)); 6354 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6355 , mSelectY)); 6356 if (DebugFlags.WEB_VIEW) { 6357 Log.v(LOGTAG, "moveSelection" 6358 + " mSelectX=" + mSelectX 6359 + " mSelectY=" + mSelectY 6360 + " mScrollX=" + mScrollX 6361 + " mScrollY=" + mScrollY 6362 + " xRate=" + xRate 6363 + " yRate=" + yRate 6364 ); 6365 } 6366 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6367 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6368 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6369 : 0; 6370 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6371 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6372 : 0; 6373 pinScrollBy(scrollX, scrollY, true, 0); 6374 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6375 requestRectangleOnScreen(select); 6376 invalidate(); 6377 } 6378 6379 private int scaleTrackballX(float xRate, int width) { 6380 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6381 int nextXMove = xMove; 6382 if (xMove > 0) { 6383 if (xMove > mTrackballXMove) { 6384 xMove -= mTrackballXMove; 6385 } 6386 } else if (xMove < mTrackballXMove) { 6387 xMove -= mTrackballXMove; 6388 } 6389 mTrackballXMove = nextXMove; 6390 return xMove; 6391 } 6392 6393 private int scaleTrackballY(float yRate, int height) { 6394 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6395 int nextYMove = yMove; 6396 if (yMove > 0) { 6397 if (yMove > mTrackballYMove) { 6398 yMove -= mTrackballYMove; 6399 } 6400 } else if (yMove < mTrackballYMove) { 6401 yMove -= mTrackballYMove; 6402 } 6403 mTrackballYMove = nextYMove; 6404 return yMove; 6405 } 6406 6407 private int keyCodeToSoundsEffect(int keyCode) { 6408 switch(keyCode) { 6409 case KeyEvent.KEYCODE_DPAD_UP: 6410 return SoundEffectConstants.NAVIGATION_UP; 6411 case KeyEvent.KEYCODE_DPAD_RIGHT: 6412 return SoundEffectConstants.NAVIGATION_RIGHT; 6413 case KeyEvent.KEYCODE_DPAD_DOWN: 6414 return SoundEffectConstants.NAVIGATION_DOWN; 6415 case KeyEvent.KEYCODE_DPAD_LEFT: 6416 return SoundEffectConstants.NAVIGATION_LEFT; 6417 } 6418 throw new IllegalArgumentException("keyCode must be one of " + 6419 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6420 "KEYCODE_DPAD_LEFT}."); 6421 } 6422 6423 private void doTrackball(long time, int metaState) { 6424 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6425 if (elapsed == 0) { 6426 elapsed = TRACKBALL_TIMEOUT; 6427 } 6428 float xRate = mTrackballRemainsX * 1000 / elapsed; 6429 float yRate = mTrackballRemainsY * 1000 / elapsed; 6430 int viewWidth = getViewWidth(); 6431 int viewHeight = getViewHeight(); 6432 if (mSelectingText) { 6433 if (!mDrawSelectionPointer) { 6434 // The last selection was made by touch, disabling drawing the 6435 // selection pointer. Allow the trackball to adjust the 6436 // position of the touch control. 6437 mSelectX = contentToViewX(nativeSelectionX()); 6438 mSelectY = contentToViewY(nativeSelectionY()); 6439 mDrawSelectionPointer = mExtendSelection = true; 6440 nativeSetExtendSelection(); 6441 } 6442 moveSelection(scaleTrackballX(xRate, viewWidth), 6443 scaleTrackballY(yRate, viewHeight)); 6444 mTrackballRemainsX = mTrackballRemainsY = 0; 6445 return; 6446 } 6447 float ax = Math.abs(xRate); 6448 float ay = Math.abs(yRate); 6449 float maxA = Math.max(ax, ay); 6450 if (DebugFlags.WEB_VIEW) { 6451 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6452 + " xRate=" + xRate 6453 + " yRate=" + yRate 6454 + " mTrackballRemainsX=" + mTrackballRemainsX 6455 + " mTrackballRemainsY=" + mTrackballRemainsY); 6456 } 6457 int width = mContentWidth - viewWidth; 6458 int height = mContentHeight - viewHeight; 6459 if (width < 0) width = 0; 6460 if (height < 0) height = 0; 6461 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6462 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6463 maxA = Math.max(ax, ay); 6464 int count = Math.max(0, (int) maxA); 6465 int oldScrollX = mScrollX; 6466 int oldScrollY = mScrollY; 6467 if (count > 0) { 6468 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6469 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6470 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6471 KeyEvent.KEYCODE_DPAD_RIGHT; 6472 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6473 if (DebugFlags.WEB_VIEW) { 6474 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6475 + " count=" + count 6476 + " mTrackballRemainsX=" + mTrackballRemainsX 6477 + " mTrackballRemainsY=" + mTrackballRemainsY); 6478 } 6479 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6480 for (int i = 0; i < count; i++) { 6481 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6482 } 6483 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6484 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6485 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6486 } 6487 mTrackballRemainsX = mTrackballRemainsY = 0; 6488 } 6489 if (count >= TRACKBALL_SCROLL_COUNT) { 6490 int xMove = scaleTrackballX(xRate, width); 6491 int yMove = scaleTrackballY(yRate, height); 6492 if (DebugFlags.WEB_VIEW) { 6493 Log.v(LOGTAG, "doTrackball pinScrollBy" 6494 + " count=" + count 6495 + " xMove=" + xMove + " yMove=" + yMove 6496 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6497 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6498 ); 6499 } 6500 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6501 xMove = 0; 6502 } 6503 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6504 yMove = 0; 6505 } 6506 if (xMove != 0 || yMove != 0) { 6507 pinScrollBy(xMove, yMove, true, 0); 6508 } 6509 } 6510 } 6511 6512 /** 6513 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6514 * @return Maximum horizontal scroll position within real content 6515 */ 6516 int computeMaxScrollX() { 6517 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6518 } 6519 6520 /** 6521 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6522 * @return Maximum vertical scroll position within real content 6523 */ 6524 int computeMaxScrollY() { 6525 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6526 - getViewHeightWithTitle(), 0); 6527 } 6528 6529 boolean updateScrollCoordinates(int x, int y) { 6530 int oldX = mScrollX; 6531 int oldY = mScrollY; 6532 mScrollX = x; 6533 mScrollY = y; 6534 if (oldX != mScrollX || oldY != mScrollY) { 6535 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6536 return true; 6537 } else { 6538 return false; 6539 } 6540 } 6541 6542 public void flingScroll(int vx, int vy) { 6543 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6544 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6545 invalidate(); 6546 } 6547 6548 private void doFling() { 6549 if (mVelocityTracker == null) { 6550 return; 6551 } 6552 int maxX = computeMaxScrollX(); 6553 int maxY = computeMaxScrollY(); 6554 6555 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6556 int vx = (int) mVelocityTracker.getXVelocity(); 6557 int vy = (int) mVelocityTracker.getYVelocity(); 6558 6559 int scrollX = mScrollX; 6560 int scrollY = mScrollY; 6561 int overscrollDistance = mOverscrollDistance; 6562 int overflingDistance = mOverflingDistance; 6563 6564 // Use the layer's scroll data if applicable. 6565 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6566 scrollX = mScrollingLayerRect.left; 6567 scrollY = mScrollingLayerRect.top; 6568 maxX = mScrollingLayerRect.right; 6569 maxY = mScrollingLayerRect.bottom; 6570 // No overscrolling for layers. 6571 overscrollDistance = overflingDistance = 0; 6572 } 6573 6574 if (mSnapScrollMode != SNAP_NONE) { 6575 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6576 vy = 0; 6577 } else { 6578 vx = 0; 6579 } 6580 } 6581 if (true /* EMG release: make our fling more like Maps' */) { 6582 // maps cuts their velocity in half 6583 vx = vx * 3 / 4; 6584 vy = vy * 3 / 4; 6585 } 6586 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6587 WebViewCore.resumePriority(); 6588 if (!mSelectingText) { 6589 WebViewCore.resumeUpdatePicture(mWebViewCore); 6590 } 6591 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6592 invalidate(); 6593 } 6594 return; 6595 } 6596 float currentVelocity = mScroller.getCurrVelocity(); 6597 float velocity = (float) Math.hypot(vx, vy); 6598 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6599 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6600 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6601 - Math.atan2(vy, vx))); 6602 final float circle = (float) (Math.PI) * 2.0f; 6603 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6604 vx += currentVelocity * mLastVelX / mLastVelocity; 6605 vy += currentVelocity * mLastVelY / mLastVelocity; 6606 velocity = (float) Math.hypot(vx, vy); 6607 if (DebugFlags.WEB_VIEW) { 6608 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6609 } 6610 } else if (DebugFlags.WEB_VIEW) { 6611 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6612 } 6613 } else if (DebugFlags.WEB_VIEW) { 6614 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6615 + " current=" + currentVelocity 6616 + " vx=" + vx + " vy=" + vy 6617 + " maxX=" + maxX + " maxY=" + maxY 6618 + " scrollX=" + scrollX + " scrollY=" + scrollY 6619 + " layer=" + mScrollingLayer); 6620 } 6621 6622 // Allow sloppy flings without overscrolling at the edges. 6623 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6624 vx = 0; 6625 } 6626 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6627 vy = 0; 6628 } 6629 6630 if (overscrollDistance < overflingDistance) { 6631 if ((vx > 0 && scrollX == -overscrollDistance) || 6632 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6633 vx = 0; 6634 } 6635 if ((vy > 0 && scrollY == -overscrollDistance) || 6636 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6637 vy = 0; 6638 } 6639 } 6640 6641 mLastVelX = vx; 6642 mLastVelY = vy; 6643 mLastVelocity = velocity; 6644 6645 // no horizontal overscroll if the content just fits 6646 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6647 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6648 // Duration is calculated based on velocity. With range boundaries and overscroll 6649 // we may not know how long the final animation will take. (Hence the deprecation 6650 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6651 // resumes during this effect we will take a performance hit. See computeScroll; 6652 // we resume webcore there when the animation is finished. 6653 final int time = mScroller.getDuration(); 6654 6655 // Suppress scrollbars for layer scrolling. 6656 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6657 awakenScrollBars(time); 6658 } 6659 6660 invalidate(); 6661 } 6662 6663 /** 6664 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6665 * in charge of installing this view to the view hierarchy. This view will 6666 * become visible when the user starts scrolling via touch and fade away if 6667 * the user does not interact with it. 6668 * <p/> 6669 * API version 3 introduces a built-in zoom mechanism that is shown 6670 * automatically by the MapView. This is the preferred approach for 6671 * showing the zoom UI. 6672 * 6673 * @deprecated The built-in zoom mechanism is preferred, see 6674 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6675 */ 6676 @Deprecated 6677 public View getZoomControls() { 6678 if (!getSettings().supportZoom()) { 6679 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6680 return null; 6681 } 6682 return mZoomManager.getExternalZoomPicker(); 6683 } 6684 6685 void dismissZoomControl() { 6686 mZoomManager.dismissZoomPicker(); 6687 } 6688 6689 float getDefaultZoomScale() { 6690 return mZoomManager.getDefaultScale(); 6691 } 6692 6693 /** 6694 * @return TRUE if the WebView can be zoomed in. 6695 */ 6696 public boolean canZoomIn() { 6697 return mZoomManager.canZoomIn(); 6698 } 6699 6700 /** 6701 * @return TRUE if the WebView can be zoomed out. 6702 */ 6703 public boolean canZoomOut() { 6704 return mZoomManager.canZoomOut(); 6705 } 6706 6707 /** 6708 * Perform zoom in in the webview 6709 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6710 */ 6711 public boolean zoomIn() { 6712 return mZoomManager.zoomIn(); 6713 } 6714 6715 /** 6716 * Perform zoom out in the webview 6717 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6718 */ 6719 public boolean zoomOut() { 6720 return mZoomManager.zoomOut(); 6721 } 6722 6723 private void updateSelection() { 6724 if (mNativeClass == 0) { 6725 return; 6726 } 6727 // mLastTouchX and mLastTouchY are the point in the current viewport 6728 int contentX = viewToContentX(mLastTouchX + mScrollX); 6729 int contentY = viewToContentY(mLastTouchY + mScrollY); 6730 int slop = viewToContentDimension(mNavSlop); 6731 Rect rect = new Rect(contentX - slop, contentY - slop, 6732 contentX + slop, contentY + slop); 6733 nativeSelectBestAt(rect); 6734 mInitialHitTestResult = hitTestResult(null); 6735 } 6736 6737 /** 6738 * Scroll the focused text field to match the WebTextView 6739 * @param xPercent New x position of the WebTextView from 0 to 1. 6740 */ 6741 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6742 if (!inEditingMode() || mWebViewCore == null) { 6743 return; 6744 } 6745 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6746 new Float(xPercent)); 6747 } 6748 6749 /** 6750 * Scroll the focused textarea vertically to match the WebTextView 6751 * @param y New y position of the WebTextView in view coordinates 6752 */ 6753 /* package */ void scrollFocusedTextInputY(int y) { 6754 if (!inEditingMode() || mWebViewCore == null) { 6755 return; 6756 } 6757 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6758 } 6759 6760 /** 6761 * Set our starting point and time for a drag from the WebTextView. 6762 */ 6763 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6764 if (!inEditingMode()) { 6765 return; 6766 } 6767 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6768 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6769 mLastTouchTime = eventTime; 6770 if (!mScroller.isFinished()) { 6771 abortAnimation(); 6772 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6773 } 6774 mSnapScrollMode = SNAP_NONE; 6775 mVelocityTracker = VelocityTracker.obtain(); 6776 mTouchMode = TOUCH_DRAG_START_MODE; 6777 } 6778 6779 /** 6780 * Given a motion event from the WebTextView, set its location to our 6781 * coordinates, and handle the event. 6782 */ 6783 /*package*/ boolean textFieldDrag(MotionEvent event) { 6784 if (!inEditingMode()) { 6785 return false; 6786 } 6787 mDragFromTextInput = true; 6788 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6789 (float) (mWebTextView.getTop() - mScrollY)); 6790 boolean result = onTouchEvent(event); 6791 mDragFromTextInput = false; 6792 return result; 6793 } 6794 6795 /** 6796 * Due a touch up from a WebTextView. This will be handled by webkit to 6797 * change the selection. 6798 * @param event MotionEvent in the WebTextView's coordinates. 6799 */ 6800 /*package*/ void touchUpOnTextField(MotionEvent event) { 6801 if (!inEditingMode()) { 6802 return; 6803 } 6804 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6805 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6806 int slop = viewToContentDimension(mNavSlop); 6807 nativeMotionUp(x, y, slop); 6808 } 6809 6810 /** 6811 * Called when pressing the center key or trackball on a textfield. 6812 */ 6813 /*package*/ void centerKeyPressOnTextField() { 6814 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6815 nativeCursorNodePointer()); 6816 } 6817 6818 private void doShortPress() { 6819 if (mNativeClass == 0) { 6820 return; 6821 } 6822 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6823 return; 6824 } 6825 mTouchMode = TOUCH_DONE_MODE; 6826 switchOutDrawHistory(); 6827 // mLastTouchX and mLastTouchY are the point in the current viewport 6828 int contentX = viewToContentX(mLastTouchX + mScrollX); 6829 int contentY = viewToContentY(mLastTouchY + mScrollY); 6830 int slop = viewToContentDimension(mNavSlop); 6831 if (getSettings().supportTouchOnly()) { 6832 removeTouchHighlight(false); 6833 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6834 // use "0" as generation id to inform WebKit to use the same x/y as 6835 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6836 touchUpData.mMoveGeneration = 0; 6837 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6838 } else if (nativePointInNavCache(contentX, contentY, slop)) { 6839 WebViewCore.MotionUpData motionUpData = new WebViewCore 6840 .MotionUpData(); 6841 motionUpData.mFrame = nativeCacheHitFramePointer(); 6842 motionUpData.mNode = nativeCacheHitNodePointer(); 6843 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6844 motionUpData.mX = contentX; 6845 motionUpData.mY = contentY; 6846 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6847 motionUpData); 6848 } else { 6849 doMotionUp(contentX, contentY); 6850 } 6851 } 6852 6853 private void doMotionUp(int contentX, int contentY) { 6854 int slop = viewToContentDimension(mNavSlop); 6855 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 6856 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6857 } 6858 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6859 playSoundEffect(SoundEffectConstants.CLICK); 6860 } 6861 } 6862 6863 /** 6864 * Returns plugin bounds if x/y in content coordinates corresponds to a 6865 * plugin. Otherwise a NULL rectangle is returned. 6866 */ 6867 Rect getPluginBounds(int x, int y) { 6868 int slop = viewToContentDimension(mNavSlop); 6869 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 6870 return nativeCacheHitNodeBounds(); 6871 } else { 6872 return null; 6873 } 6874 } 6875 6876 /* 6877 * Return true if the rect (e.g. plugin) is fully visible and maximized 6878 * inside the WebView. 6879 */ 6880 boolean isRectFitOnScreen(Rect rect) { 6881 final int rectWidth = rect.width(); 6882 final int rectHeight = rect.height(); 6883 final int viewWidth = getViewWidth(); 6884 final int viewHeight = getViewHeightWithTitle(); 6885 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6886 scale = mZoomManager.computeScaleWithLimits(scale); 6887 return !mZoomManager.willScaleTriggerZoom(scale) 6888 && contentToViewX(rect.left) >= mScrollX 6889 && contentToViewX(rect.right) <= mScrollX + viewWidth 6890 && contentToViewY(rect.top) >= mScrollY 6891 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6892 } 6893 6894 /* 6895 * Maximize and center the rectangle, specified in the document coordinate 6896 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6897 * animated scroll to center it. If the zoom needs to be changed, find the 6898 * zoom center and do a smooth zoom transition. The rect is in document 6899 * coordinates 6900 */ 6901 void centerFitRect(Rect rect) { 6902 final int rectWidth = rect.width(); 6903 final int rectHeight = rect.height(); 6904 final int viewWidth = getViewWidth(); 6905 final int viewHeight = getViewHeightWithTitle(); 6906 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6907 / rectHeight); 6908 scale = mZoomManager.computeScaleWithLimits(scale); 6909 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6910 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6911 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6912 true, 0); 6913 } else { 6914 float actualScale = mZoomManager.getScale(); 6915 float oldScreenX = rect.left * actualScale - mScrollX; 6916 float rectViewX = rect.left * scale; 6917 float rectViewWidth = rectWidth * scale; 6918 float newMaxWidth = mContentWidth * scale; 6919 float newScreenX = (viewWidth - rectViewWidth) / 2; 6920 // pin the newX to the WebView 6921 if (newScreenX > rectViewX) { 6922 newScreenX = rectViewX; 6923 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6924 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6925 } 6926 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6927 / (scale - actualScale); 6928 float oldScreenY = rect.top * actualScale + getTitleHeight() 6929 - mScrollY; 6930 float rectViewY = rect.top * scale + getTitleHeight(); 6931 float rectViewHeight = rectHeight * scale; 6932 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6933 float newScreenY = (viewHeight - rectViewHeight) / 2; 6934 // pin the newY to the WebView 6935 if (newScreenY > rectViewY) { 6936 newScreenY = rectViewY; 6937 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6938 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6939 } 6940 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6941 / (scale - actualScale); 6942 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6943 mZoomManager.startZoomAnimation(scale, false); 6944 } 6945 } 6946 6947 // Called by JNI to handle a touch on a node representing an email address, 6948 // address, or phone number 6949 private void overrideLoading(String url) { 6950 mCallbackProxy.uiOverrideUrlLoading(url); 6951 } 6952 6953 @Override 6954 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6955 // FIXME: If a subwindow is showing find, and the user touches the 6956 // background window, it can steal focus. 6957 if (mFindIsUp) return false; 6958 boolean result = false; 6959 if (inEditingMode()) { 6960 result = mWebTextView.requestFocus(direction, 6961 previouslyFocusedRect); 6962 } else { 6963 result = super.requestFocus(direction, previouslyFocusedRect); 6964 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6965 // For cases such as GMail, where we gain focus from a direction, 6966 // we want to move to the first available link. 6967 // FIXME: If there are no visible links, we may not want to 6968 int fakeKeyDirection = 0; 6969 switch(direction) { 6970 case View.FOCUS_UP: 6971 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6972 break; 6973 case View.FOCUS_DOWN: 6974 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6975 break; 6976 case View.FOCUS_LEFT: 6977 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6978 break; 6979 case View.FOCUS_RIGHT: 6980 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6981 break; 6982 default: 6983 return result; 6984 } 6985 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6986 navHandledKey(fakeKeyDirection, 1, true, 0); 6987 } 6988 } 6989 } 6990 return result; 6991 } 6992 6993 @Override 6994 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6995 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6996 6997 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6998 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6999 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 7000 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 7001 7002 int measuredHeight = heightSize; 7003 int measuredWidth = widthSize; 7004 7005 // Grab the content size from WebViewCore. 7006 int contentHeight = contentToViewDimension(mContentHeight); 7007 int contentWidth = contentToViewDimension(mContentWidth); 7008 7009// Log.d(LOGTAG, "------- measure " + heightMode); 7010 7011 if (heightMode != MeasureSpec.EXACTLY) { 7012 mHeightCanMeasure = true; 7013 measuredHeight = contentHeight; 7014 if (heightMode == MeasureSpec.AT_MOST) { 7015 // If we are larger than the AT_MOST height, then our height can 7016 // no longer be measured and we should scroll internally. 7017 if (measuredHeight > heightSize) { 7018 measuredHeight = heightSize; 7019 mHeightCanMeasure = false; 7020 } else if (measuredHeight < heightSize) { 7021 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7022 } 7023 } 7024 } else { 7025 mHeightCanMeasure = false; 7026 } 7027 if (mNativeClass != 0) { 7028 nativeSetHeightCanMeasure(mHeightCanMeasure); 7029 } 7030 // For the width, always use the given size unless unspecified. 7031 if (widthMode == MeasureSpec.UNSPECIFIED) { 7032 mWidthCanMeasure = true; 7033 measuredWidth = contentWidth; 7034 } else { 7035 if (measuredWidth < contentWidth) { 7036 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7037 } 7038 mWidthCanMeasure = false; 7039 } 7040 7041 synchronized (this) { 7042 setMeasuredDimension(measuredWidth, measuredHeight); 7043 } 7044 } 7045 7046 @Override 7047 public boolean requestChildRectangleOnScreen(View child, 7048 Rect rect, 7049 boolean immediate) { 7050 if (mNativeClass == 0) { 7051 return false; 7052 } 7053 // don't scroll while in zoom animation. When it is done, we will adjust 7054 // the necessary components (e.g., WebTextView if it is in editing mode) 7055 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7056 return false; 7057 } 7058 7059 rect.offset(child.getLeft() - child.getScrollX(), 7060 child.getTop() - child.getScrollY()); 7061 7062 Rect content = new Rect(viewToContentX(mScrollX), 7063 viewToContentY(mScrollY), 7064 viewToContentX(mScrollX + getWidth() 7065 - getVerticalScrollbarWidth()), 7066 viewToContentY(mScrollY + getViewHeightWithTitle())); 7067 content = nativeSubtractLayers(content); 7068 int screenTop = contentToViewY(content.top); 7069 int screenBottom = contentToViewY(content.bottom); 7070 int height = screenBottom - screenTop; 7071 int scrollYDelta = 0; 7072 7073 if (rect.bottom > screenBottom) { 7074 int oneThirdOfScreenHeight = height / 3; 7075 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7076 // If the rectangle is too tall to fit in the bottom two thirds 7077 // of the screen, place it at the top. 7078 scrollYDelta = rect.top - screenTop; 7079 } else { 7080 // If the rectangle will still fit on screen, we want its 7081 // top to be in the top third of the screen. 7082 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7083 } 7084 } else if (rect.top < screenTop) { 7085 scrollYDelta = rect.top - screenTop; 7086 } 7087 7088 int screenLeft = contentToViewX(content.left); 7089 int screenRight = contentToViewX(content.right); 7090 int width = screenRight - screenLeft; 7091 int scrollXDelta = 0; 7092 7093 if (rect.right > screenRight && rect.left > screenLeft) { 7094 if (rect.width() > width) { 7095 scrollXDelta += (rect.left - screenLeft); 7096 } else { 7097 scrollXDelta += (rect.right - screenRight); 7098 } 7099 } else if (rect.left < screenLeft) { 7100 scrollXDelta -= (screenLeft - rect.left); 7101 } 7102 7103 if ((scrollYDelta | scrollXDelta) != 0) { 7104 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7105 } 7106 7107 return false; 7108 } 7109 7110 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7111 String replace, int newStart, int newEnd) { 7112 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7113 arg.mReplace = replace; 7114 arg.mNewStart = newStart; 7115 arg.mNewEnd = newEnd; 7116 mTextGeneration++; 7117 arg.mTextGeneration = mTextGeneration; 7118 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7119 } 7120 7121 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7122 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7123 arg.mEvent = event; 7124 arg.mCurrentText = currentText; 7125 // Increase our text generation number, and pass it to webcore thread 7126 mTextGeneration++; 7127 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7128 // WebKit's document state is not saved until about to leave the page. 7129 // To make sure the host application, like Browser, has the up to date 7130 // document state when it goes to background, we force to save the 7131 // document state. 7132 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7133 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7134 cursorData(), 1000); 7135 } 7136 7137 /* package */ synchronized WebViewCore getWebViewCore() { 7138 return mWebViewCore; 7139 } 7140 7141 /** 7142 * Used only by TouchEventQueue to store pending touch events. 7143 */ 7144 private static class QueuedTouch { 7145 long mSequence; 7146 MotionEvent mEvent; // Optional 7147 TouchEventData mTed; // Optional 7148 7149 QueuedTouch mNext; 7150 7151 public QueuedTouch set(TouchEventData ted) { 7152 mSequence = ted.mSequence; 7153 mTed = ted; 7154 mEvent = null; 7155 mNext = null; 7156 return this; 7157 } 7158 7159 public QueuedTouch set(MotionEvent ev, long sequence) { 7160 mEvent = MotionEvent.obtain(ev); 7161 mSequence = sequence; 7162 mTed = null; 7163 mNext = null; 7164 return this; 7165 } 7166 7167 public QueuedTouch add(QueuedTouch other) { 7168 if (other.mSequence < mSequence) { 7169 other.mNext = this; 7170 return other; 7171 } 7172 7173 QueuedTouch insertAt = this; 7174 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7175 insertAt = insertAt.mNext; 7176 } 7177 other.mNext = insertAt.mNext; 7178 insertAt.mNext = other; 7179 return this; 7180 } 7181 } 7182 7183 /** 7184 * WebView handles touch events asynchronously since some events must be passed to WebKit 7185 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7186 * of which path they take to ensure that no events are ever processed out of order 7187 * by WebView. 7188 */ 7189 private class TouchEventQueue { 7190 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7191 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7192 private long mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7193 private QueuedTouch mTouchEventQueue; 7194 private QueuedTouch mQueuedTouchRecycleBin; 7195 private int mQueuedTouchRecycleCount; 7196 private long mLastEventTime = Long.MAX_VALUE; 7197 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7198 7199 // milliseconds until we abandon hope of getting all of a previous gesture 7200 private static final int QUEUED_GESTURE_TIMEOUT = 1000; 7201 7202 private QueuedTouch obtainQueuedTouch() { 7203 if (mQueuedTouchRecycleBin != null) { 7204 QueuedTouch result = mQueuedTouchRecycleBin; 7205 mQueuedTouchRecycleBin = result.mNext; 7206 mQueuedTouchRecycleCount--; 7207 return result; 7208 } 7209 return new QueuedTouch(); 7210 } 7211 7212 /** 7213 * Allow events with any currently missing sequence numbers to be skipped in processing. 7214 */ 7215 public void ignoreCurrentlyMissingEvents() { 7216 mIgnoreUntilSequence = mNextTouchSequence; 7217 } 7218 7219 private void recycleQueuedTouch(QueuedTouch qd) { 7220 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7221 qd.mNext = mQueuedTouchRecycleBin; 7222 mQueuedTouchRecycleBin = qd; 7223 mQueuedTouchRecycleCount++; 7224 } 7225 } 7226 7227 /** 7228 * Reset the touch event queue. This will dump any pending events 7229 * and reset the sequence numbering. 7230 */ 7231 public void reset() { 7232 mNextTouchSequence = Long.MIN_VALUE + 1; 7233 mLastHandledTouchSequence = Long.MIN_VALUE; 7234 mIgnoreUntilSequence = Long.MIN_VALUE + 1; 7235 while (mTouchEventQueue != null) { 7236 QueuedTouch recycleMe = mTouchEventQueue; 7237 mTouchEventQueue = mTouchEventQueue.mNext; 7238 recycleQueuedTouch(recycleMe); 7239 } 7240 } 7241 7242 /** 7243 * Return the next valid sequence number for tagging incoming touch events. 7244 * @return The next touch event sequence number 7245 */ 7246 public long nextTouchSequence() { 7247 return mNextTouchSequence++; 7248 } 7249 7250 /** 7251 * Enqueue a touch event in the form of TouchEventData. 7252 * The sequence number will be read from the mSequence field of the argument. 7253 * 7254 * If the touch event's sequence number is the next in line to be processed, it will 7255 * be handled before this method returns. Any subsequent events that have already 7256 * been queued will also be processed in their proper order. 7257 * 7258 * @param ted Touch data to be processed in order. 7259 * @return true if the event was processed before returning, false if it was just enqueued. 7260 */ 7261 public boolean enqueueTouchEvent(TouchEventData ted) { 7262 if (ted.mSequence < mLastHandledTouchSequence) { 7263 // Stale event and we already moved on; drop it. (Should not be common.) 7264 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7265 " received from webcore; ignoring"); 7266 return false; 7267 } 7268 7269 if (dropStaleGestures(ted.mMotionEvent, ted.mSequence)) { 7270 return false; 7271 } 7272 7273 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7274 handleQueuedTouchEventData(ted); 7275 7276 mLastHandledTouchSequence++; 7277 7278 // Do we have any more? Run them if so. 7279 QueuedTouch qd = mTouchEventQueue; 7280 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7281 handleQueuedTouch(qd); 7282 QueuedTouch recycleMe = qd; 7283 qd = qd.mNext; 7284 recycleQueuedTouch(recycleMe); 7285 mLastHandledTouchSequence++; 7286 } 7287 mTouchEventQueue = qd; 7288 } else { 7289 QueuedTouch qd = obtainQueuedTouch().set(ted); 7290 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7291 } 7292 return true; 7293 } 7294 7295 /** 7296 * Enqueue a touch event in the form of a MotionEvent from the framework. 7297 * 7298 * If the touch event's sequence number is the next in line to be processed, it will 7299 * be handled before this method returns. Any subsequent events that have already 7300 * been queued will also be processed in their proper order. 7301 * 7302 * @param ev MotionEvent to be processed in order 7303 */ 7304 public void enqueueTouchEvent(MotionEvent ev) { 7305 final long sequence = nextTouchSequence(); 7306 7307 if (dropStaleGestures(ev, sequence)) { 7308 return; 7309 } 7310 7311 if (mLastHandledTouchSequence + 1 == sequence) { 7312 handleQueuedMotionEvent(ev); 7313 7314 mLastHandledTouchSequence++; 7315 7316 // Do we have any more? Run them if so. 7317 QueuedTouch qd = mTouchEventQueue; 7318 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7319 handleQueuedTouch(qd); 7320 QueuedTouch recycleMe = qd; 7321 qd = qd.mNext; 7322 recycleQueuedTouch(recycleMe); 7323 mLastHandledTouchSequence++; 7324 } 7325 mTouchEventQueue = qd; 7326 } else { 7327 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7328 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7329 } 7330 } 7331 7332 private boolean dropStaleGestures(MotionEvent ev, long sequence) { 7333 if (ev != null && ev.getAction() == MotionEvent.ACTION_MOVE && !mConfirmMove) { 7334 // This is to make sure that we don't attempt to process a tap 7335 // or long press when webkit takes too long to get back to us. 7336 // The movement will be properly confirmed when we process the 7337 // enqueued event later. 7338 final int dx = Math.round(ev.getX()) - mLastTouchX; 7339 final int dy = Math.round(ev.getY()) - mLastTouchY; 7340 if (dx * dx + dy * dy > mTouchSlopSquare) { 7341 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 7342 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 7343 } 7344 } 7345 7346 if (mTouchEventQueue == null) { 7347 return sequence <= mLastHandledTouchSequence; 7348 } 7349 7350 // If we have a new down event and it's been a while since the last event 7351 // we saw, just reset and keep going. 7352 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN) { 7353 long eventTime = ev.getEventTime(); 7354 long lastHandledEventTime = mLastEventTime; 7355 if (eventTime > lastHandledEventTime + QUEUED_GESTURE_TIMEOUT) { 7356 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7357 "Ignoring previous queued events."); 7358 QueuedTouch qd = mTouchEventQueue; 7359 while (qd != null && qd.mSequence < sequence) { 7360 QueuedTouch recycleMe = qd; 7361 qd = qd.mNext; 7362 recycleQueuedTouch(recycleMe); 7363 } 7364 mTouchEventQueue = qd; 7365 mLastHandledTouchSequence = sequence - 1; 7366 } 7367 } 7368 7369 if (mIgnoreUntilSequence - 1 > mLastHandledTouchSequence) { 7370 QueuedTouch qd = mTouchEventQueue; 7371 while (qd != null && qd.mSequence < mIgnoreUntilSequence) { 7372 QueuedTouch recycleMe = qd; 7373 qd = qd.mNext; 7374 recycleQueuedTouch(recycleMe); 7375 } 7376 mTouchEventQueue = qd; 7377 mLastHandledTouchSequence = mIgnoreUntilSequence - 1; 7378 } 7379 7380 return sequence <= mLastHandledTouchSequence; 7381 } 7382 7383 private void handleQueuedTouch(QueuedTouch qt) { 7384 if (qt.mTed != null) { 7385 handleQueuedTouchEventData(qt.mTed); 7386 } else { 7387 handleQueuedMotionEvent(qt.mEvent); 7388 qt.mEvent.recycle(); 7389 } 7390 } 7391 7392 private void handleQueuedMotionEvent(MotionEvent ev) { 7393 mLastEventTime = ev.getEventTime(); 7394 int action = ev.getActionMasked(); 7395 if (ev.getPointerCount() > 1) { // Multi-touch 7396 handleMultiTouchInWebView(ev); 7397 } else { 7398 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 7399 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 7400 // ScaleGestureDetector needs a consistent event stream to operate properly. 7401 // It won't take any action with fewer than two pointers, but it needs to 7402 // update internal bookkeeping state. 7403 detector.onTouchEvent(ev); 7404 } 7405 7406 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 7407 } 7408 } 7409 7410 private void handleQueuedTouchEventData(TouchEventData ted) { 7411 if (ted.mMotionEvent != null) { 7412 mLastEventTime = ted.mMotionEvent.getEventTime(); 7413 } 7414 if (!ted.mReprocess) { 7415 if (ted.mAction == MotionEvent.ACTION_DOWN 7416 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7417 // if prevent default is called from WebCore, UI 7418 // will not handle the rest of the touch events any 7419 // more. 7420 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7421 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7422 } else if (ted.mAction == MotionEvent.ACTION_MOVE 7423 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7424 // the return for the first ACTION_MOVE will decide 7425 // whether UI will handle touch or not. Currently no 7426 // support for alternating prevent default 7427 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7428 : PREVENT_DEFAULT_NO; 7429 } 7430 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7431 mTouchHighlightRegion.setEmpty(); 7432 } 7433 } else { 7434 if (ted.mPoints.length > 1) { // multi-touch 7435 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 7436 mPreventDefault = PREVENT_DEFAULT_NO; 7437 handleMultiTouchInWebView(ted.mMotionEvent); 7438 } else { 7439 mPreventDefault = PREVENT_DEFAULT_YES; 7440 } 7441 return; 7442 } 7443 7444 // prevent default is not called in WebCore, so the 7445 // message needs to be reprocessed in UI 7446 if (!ted.mNativeResult) { 7447 // Following is for single touch. 7448 switch (ted.mAction) { 7449 case MotionEvent.ACTION_DOWN: 7450 mLastDeferTouchX = ted.mPointsInView[0].x; 7451 mLastDeferTouchY = ted.mPointsInView[0].y; 7452 mDeferTouchMode = TOUCH_INIT_MODE; 7453 break; 7454 case MotionEvent.ACTION_MOVE: { 7455 // no snapping in defer process 7456 int x = ted.mPointsInView[0].x; 7457 int y = ted.mPointsInView[0].y; 7458 7459 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7460 mDeferTouchMode = TOUCH_DRAG_MODE; 7461 mLastDeferTouchX = x; 7462 mLastDeferTouchY = y; 7463 startScrollingLayer(x, y); 7464 startDrag(); 7465 } 7466 int deltaX = pinLocX((int) (mScrollX 7467 + mLastDeferTouchX - x)) 7468 - mScrollX; 7469 int deltaY = pinLocY((int) (mScrollY 7470 + mLastDeferTouchY - y)) 7471 - mScrollY; 7472 doDrag(deltaX, deltaY); 7473 if (deltaX != 0) mLastDeferTouchX = x; 7474 if (deltaY != 0) mLastDeferTouchY = y; 7475 break; 7476 } 7477 case MotionEvent.ACTION_UP: 7478 case MotionEvent.ACTION_CANCEL: 7479 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7480 // no fling in defer process 7481 mScroller.springBack(mScrollX, mScrollY, 0, 7482 computeMaxScrollX(), 0, 7483 computeMaxScrollY()); 7484 invalidate(); 7485 WebViewCore.resumePriority(); 7486 WebViewCore.resumeUpdatePicture(mWebViewCore); 7487 } 7488 mDeferTouchMode = TOUCH_DONE_MODE; 7489 break; 7490 case WebViewCore.ACTION_DOUBLETAP: 7491 // doDoubleTap() needs mLastTouchX/Y as anchor 7492 mLastDeferTouchX = ted.mPointsInView[0].x; 7493 mLastDeferTouchY = ted.mPointsInView[0].y; 7494 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7495 mDeferTouchMode = TOUCH_DONE_MODE; 7496 break; 7497 case WebViewCore.ACTION_LONGPRESS: 7498 HitTestResult hitTest = getHitTestResult(); 7499 if (hitTest != null && hitTest.mType 7500 != HitTestResult.UNKNOWN_TYPE) { 7501 performLongClick(); 7502 } 7503 mDeferTouchMode = TOUCH_DONE_MODE; 7504 break; 7505 } 7506 } 7507 } 7508 } 7509 } 7510 7511 //------------------------------------------------------------------------- 7512 // Methods can be called from a separate thread, like WebViewCore 7513 // If it needs to call the View system, it has to send message. 7514 //------------------------------------------------------------------------- 7515 7516 /** 7517 * General handler to receive message coming from webkit thread 7518 */ 7519 class PrivateHandler extends Handler { 7520 @Override 7521 public void handleMessage(Message msg) { 7522 // exclude INVAL_RECT_MSG_ID since it is frequently output 7523 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7524 if (msg.what >= FIRST_PRIVATE_MSG_ID 7525 && msg.what <= LAST_PRIVATE_MSG_ID) { 7526 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7527 - FIRST_PRIVATE_MSG_ID]); 7528 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7529 && msg.what <= LAST_PACKAGE_MSG_ID) { 7530 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7531 - FIRST_PACKAGE_MSG_ID]); 7532 } else { 7533 Log.v(LOGTAG, Integer.toString(msg.what)); 7534 } 7535 } 7536 if (mWebViewCore == null) { 7537 // after WebView's destroy() is called, skip handling messages. 7538 return; 7539 } 7540 switch (msg.what) { 7541 case REMEMBER_PASSWORD: { 7542 mDatabase.setUsernamePassword( 7543 msg.getData().getString("host"), 7544 msg.getData().getString("username"), 7545 msg.getData().getString("password")); 7546 ((Message) msg.obj).sendToTarget(); 7547 break; 7548 } 7549 case NEVER_REMEMBER_PASSWORD: { 7550 mDatabase.setUsernamePassword( 7551 msg.getData().getString("host"), null, null); 7552 ((Message) msg.obj).sendToTarget(); 7553 break; 7554 } 7555 case PREVENT_DEFAULT_TIMEOUT: { 7556 // if timeout happens, cancel it so that it won't block UI 7557 // to continue handling touch events 7558 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7559 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7560 || (msg.arg1 == MotionEvent.ACTION_MOVE 7561 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7562 cancelWebCoreTouchEvent( 7563 viewToContentX(mLastTouchX + mScrollX), 7564 viewToContentY(mLastTouchY + mScrollY), 7565 true); 7566 } 7567 break; 7568 } 7569 case SCROLL_SELECT_TEXT: { 7570 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7571 mSentAutoScrollMessage = false; 7572 break; 7573 } 7574 if (mScrollingLayer == 0) { 7575 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7576 } else { 7577 mScrollingLayerRect.left += mAutoScrollX; 7578 mScrollingLayerRect.top += mAutoScrollY; 7579 nativeScrollLayer(mScrollingLayer, 7580 mScrollingLayerRect.left, 7581 mScrollingLayerRect.top); 7582 invalidate(); 7583 } 7584 sendEmptyMessageDelayed( 7585 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7586 break; 7587 } 7588 case SWITCH_TO_SHORTPRESS: { 7589 mInitialHitTestResult = null; // set by updateSelection() 7590 if (mTouchMode == TOUCH_INIT_MODE) { 7591 if (!getSettings().supportTouchOnly() 7592 && mPreventDefault != PREVENT_DEFAULT_YES) { 7593 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7594 updateSelection(); 7595 } else { 7596 // set to TOUCH_SHORTPRESS_MODE so that it won't 7597 // trigger double tap any more 7598 mTouchMode = TOUCH_SHORTPRESS_MODE; 7599 } 7600 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7601 mTouchMode = TOUCH_DONE_MODE; 7602 } 7603 break; 7604 } 7605 case SWITCH_TO_LONGPRESS: { 7606 if (getSettings().supportTouchOnly()) { 7607 removeTouchHighlight(false); 7608 } 7609 if (inFullScreenMode() || mDeferTouchProcess) { 7610 TouchEventData ted = new TouchEventData(); 7611 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7612 ted.mIds = new int[1]; 7613 ted.mIds[0] = 0; 7614 ted.mPoints = new Point[1]; 7615 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7616 viewToContentY(mLastTouchY + mScrollY)); 7617 ted.mPointsInView = new Point[1]; 7618 ted.mPointsInView[0] = new Point(mLastTouchX, mLastTouchY); 7619 // metaState for long press is tricky. Should it be the 7620 // state when the press started or when the press was 7621 // released? Or some intermediary key state? For 7622 // simplicity for now, we don't set it. 7623 ted.mMetaState = 0; 7624 ted.mReprocess = mDeferTouchProcess; 7625 ted.mNativeLayer = nativeScrollableLayer( 7626 ted.mPoints[0].x, ted.mPoints[0].y, 7627 ted.mNativeLayerRect, null); 7628 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7629 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7630 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7631 mTouchMode = TOUCH_DONE_MODE; 7632 performLongClick(); 7633 } 7634 break; 7635 } 7636 case RELEASE_SINGLE_TAP: { 7637 doShortPress(); 7638 break; 7639 } 7640 case SCROLL_TO_MSG_ID: { 7641 // arg1 = animate, arg2 = onlyIfImeIsShowing 7642 // obj = Point(x, y) 7643 if (msg.arg2 == 1) { 7644 // This scroll is intended to bring the textfield into 7645 // view, but is only necessary if the IME is showing 7646 InputMethodManager imm = InputMethodManager.peekInstance(); 7647 if (imm == null || !imm.isAcceptingText() 7648 || (!imm.isActive(WebView.this) && (!inEditingMode() 7649 || !imm.isActive(mWebTextView)))) { 7650 break; 7651 } 7652 } 7653 final Point p = (Point) msg.obj; 7654 if (msg.arg1 == 1) { 7655 spawnContentScrollTo(p.x, p.y); 7656 } else { 7657 setContentScrollTo(p.x, p.y); 7658 } 7659 break; 7660 } 7661 case UPDATE_ZOOM_RANGE: { 7662 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7663 // mScrollX contains the new minPrefWidth 7664 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7665 break; 7666 } 7667 case REPLACE_BASE_CONTENT: { 7668 nativeReplaceBaseContent(msg.arg1); 7669 break; 7670 } 7671 case NEW_PICTURE_MSG_ID: { 7672 // called for new content 7673 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7674 WebViewCore.ViewState viewState = draw.mViewState; 7675 boolean isPictureAfterFirstLayout = viewState != null; 7676 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 7677 getSettings().getShowVisualIndicator(), 7678 isPictureAfterFirstLayout); 7679 final Point viewSize = draw.mViewSize; 7680 if (isPictureAfterFirstLayout) { 7681 // Reset the last sent data here since dealing with new page. 7682 mLastWidthSent = 0; 7683 mZoomManager.onFirstLayout(draw); 7684 if (!mDrawHistory) { 7685 // Do not send the scroll event for this particular 7686 // scroll message. Note that a scroll event may 7687 // still be fired if the user scrolls before the 7688 // message can be handled. 7689 mSendScrollEvent = false; 7690 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7691 mSendScrollEvent = true; 7692 7693 // As we are on a new page, remove the WebTextView. This 7694 // is necessary for page loads driven by webkit, and in 7695 // particular when the user was on a password field, so 7696 // the WebTextView was visible. 7697 clearTextEntry(); 7698 } 7699 } 7700 7701 // We update the layout (i.e. request a layout from the 7702 // view system) if the last view size that we sent to 7703 // WebCore matches the view size of the picture we just 7704 // received in the fixed dimension. 7705 final boolean updateLayout = viewSize.x == mLastWidthSent 7706 && viewSize.y == mLastHeightSent; 7707 // Don't send scroll event for picture coming from webkit, 7708 // since the new picture may cause a scroll event to override 7709 // the saved history scroll position. 7710 mSendScrollEvent = false; 7711 recordNewContentSize(draw.mContentSize.x, 7712 draw.mContentSize.y, updateLayout); 7713 mSendScrollEvent = true; 7714 if (DebugFlags.WEB_VIEW) { 7715 Rect b = draw.mInvalRegion.getBounds(); 7716 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7717 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7718 } 7719 invalidateContentRect(draw.mInvalRegion.getBounds()); 7720 7721 if (mPictureListener != null) { 7722 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7723 } 7724 7725 // update the zoom information based on the new picture 7726 mZoomManager.onNewPicture(draw); 7727 7728 if (draw.mFocusSizeChanged && inEditingMode()) { 7729 mFocusSizeChanged = true; 7730 } 7731 if (isPictureAfterFirstLayout) { 7732 mViewManager.postReadyToDrawAll(); 7733 } 7734 break; 7735 } 7736 case WEBCORE_INITIALIZED_MSG_ID: 7737 // nativeCreate sets mNativeClass to a non-zero value 7738 String drawableDir = BrowserFrame.getRawResFilename( 7739 BrowserFrame.DRAWABLEDIR, mContext); 7740 AssetManager am = mContext.getAssets(); 7741 nativeCreate(msg.arg1, drawableDir, am); 7742 break; 7743 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7744 // Make sure that the textfield is currently focused 7745 // and representing the same node as the pointer. 7746 if (inEditingMode() && 7747 mWebTextView.isSameTextField(msg.arg1)) { 7748 if (msg.getData().getBoolean("password")) { 7749 Spannable text = (Spannable) mWebTextView.getText(); 7750 int start = Selection.getSelectionStart(text); 7751 int end = Selection.getSelectionEnd(text); 7752 mWebTextView.setInPassword(true); 7753 // Restore the selection, which may have been 7754 // ruined by setInPassword. 7755 Spannable pword = 7756 (Spannable) mWebTextView.getText(); 7757 Selection.setSelection(pword, start, end); 7758 // If the text entry has created more events, ignore 7759 // this one. 7760 } else if (msg.arg2 == mTextGeneration) { 7761 String text = (String) msg.obj; 7762 if (null == text) { 7763 text = ""; 7764 } 7765 mWebTextView.setTextAndKeepSelection(text); 7766 } 7767 } 7768 break; 7769 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7770 displaySoftKeyboard(true); 7771 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7772 case UPDATE_TEXT_SELECTION_MSG_ID: 7773 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7774 (WebViewCore.TextSelectionData) msg.obj); 7775 break; 7776 case FORM_DID_BLUR: 7777 if (inEditingMode() 7778 && mWebTextView.isSameTextField(msg.arg1)) { 7779 hideSoftKeyboard(); 7780 } 7781 break; 7782 case RETURN_LABEL: 7783 if (inEditingMode() 7784 && mWebTextView.isSameTextField(msg.arg1)) { 7785 mWebTextView.setHint((String) msg.obj); 7786 InputMethodManager imm 7787 = InputMethodManager.peekInstance(); 7788 // The hint is propagated to the IME in 7789 // onCreateInputConnection. If the IME is already 7790 // active, restart it so that its hint text is updated. 7791 if (imm != null && imm.isActive(mWebTextView)) { 7792 imm.restartInput(mWebTextView); 7793 } 7794 } 7795 break; 7796 case UNHANDLED_NAV_KEY: 7797 navHandledKey(msg.arg1, 1, false, 0); 7798 break; 7799 case UPDATE_TEXT_ENTRY_MSG_ID: 7800 // this is sent after finishing resize in WebViewCore. Make 7801 // sure the text edit box is still on the screen. 7802 if (inEditingMode() && nativeCursorIsTextInput()) { 7803 rebuildWebTextView(); 7804 } 7805 break; 7806 case CLEAR_TEXT_ENTRY: 7807 clearTextEntry(); 7808 break; 7809 case INVAL_RECT_MSG_ID: { 7810 Rect r = (Rect)msg.obj; 7811 if (r == null) { 7812 invalidate(); 7813 } else { 7814 // we need to scale r from content into view coords, 7815 // which viewInvalidate() does for us 7816 viewInvalidate(r.left, r.top, r.right, r.bottom); 7817 } 7818 break; 7819 } 7820 case REQUEST_FORM_DATA: 7821 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7822 if (mWebTextView.isSameTextField(msg.arg1)) { 7823 mWebTextView.setAdapterCustom(adapter); 7824 } 7825 break; 7826 case RESUME_WEBCORE_PRIORITY: 7827 WebViewCore.resumePriority(); 7828 WebViewCore.resumeUpdatePicture(mWebViewCore); 7829 break; 7830 7831 case LONG_PRESS_CENTER: 7832 // as this is shared by keydown and trackballdown, reset all 7833 // the states 7834 mGotCenterDown = false; 7835 mTrackballDown = false; 7836 performLongClick(); 7837 break; 7838 7839 case WEBCORE_NEED_TOUCH_EVENTS: 7840 mForwardTouchEvents = (msg.arg1 != 0); 7841 break; 7842 7843 case PREVENT_TOUCH_ID: 7844 if (inFullScreenMode()) { 7845 break; 7846 } 7847 TouchEventData ted = (TouchEventData) msg.obj; 7848 7849 if (mTouchEventQueue.enqueueTouchEvent(ted)) { 7850 // WebCore is responding to us; remove pending timeout. 7851 // It will be re-posted when needed. 7852 removeMessages(PREVENT_DEFAULT_TIMEOUT); 7853 } 7854 break; 7855 7856 case REQUEST_KEYBOARD: 7857 if (msg.arg1 == 0) { 7858 hideSoftKeyboard(); 7859 } else { 7860 displaySoftKeyboard(false); 7861 } 7862 break; 7863 7864 case FIND_AGAIN: 7865 // Ignore if find has been dismissed. 7866 if (mFindIsUp && mFindCallback != null) { 7867 mFindCallback.findAll(); 7868 } 7869 break; 7870 7871 case DRAG_HELD_MOTIONLESS: 7872 mHeldMotionless = MOTIONLESS_TRUE; 7873 invalidate(); 7874 // fall through to keep scrollbars awake 7875 7876 case AWAKEN_SCROLL_BARS: 7877 if (mTouchMode == TOUCH_DRAG_MODE 7878 && mHeldMotionless == MOTIONLESS_TRUE) { 7879 awakenScrollBars(ViewConfiguration 7880 .getScrollDefaultDelay(), false); 7881 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7882 .obtainMessage(AWAKEN_SCROLL_BARS), 7883 ViewConfiguration.getScrollDefaultDelay()); 7884 } 7885 break; 7886 7887 case DO_MOTION_UP: 7888 doMotionUp(msg.arg1, msg.arg2); 7889 break; 7890 7891 case SCREEN_ON: 7892 setKeepScreenOn(msg.arg1 == 1); 7893 break; 7894 7895 case ENTER_FULLSCREEN_VIDEO: 7896 int layerId = msg.arg1; 7897 7898 String url = (String) msg.obj; 7899 if (mHTML5VideoViewProxy != null) { 7900 mHTML5VideoViewProxy.enterFullScreenVideo(layerId, url); 7901 } 7902 break; 7903 7904 case SHOW_FULLSCREEN: { 7905 View view = (View) msg.obj; 7906 int npp = msg.arg1; 7907 7908 if (inFullScreenMode()) { 7909 Log.w(LOGTAG, "Should not have another full screen."); 7910 dismissFullScreenMode(); 7911 } 7912 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7913 mFullScreenHolder.setContentView(view); 7914 mFullScreenHolder.setCancelable(false); 7915 mFullScreenHolder.setCanceledOnTouchOutside(false); 7916 mFullScreenHolder.show(); 7917 7918 break; 7919 } 7920 case HIDE_FULLSCREEN: 7921 dismissFullScreenMode(); 7922 break; 7923 7924 case DOM_FOCUS_CHANGED: 7925 if (inEditingMode()) { 7926 nativeClearCursor(); 7927 rebuildWebTextView(); 7928 } 7929 break; 7930 7931 case SHOW_RECT_MSG_ID: { 7932 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7933 int x = mScrollX; 7934 int left = contentToViewX(data.mLeft); 7935 int width = contentToViewDimension(data.mWidth); 7936 int maxWidth = contentToViewDimension(data.mContentWidth); 7937 int viewWidth = getViewWidth(); 7938 if (width < viewWidth) { 7939 // center align 7940 x += left + width / 2 - mScrollX - viewWidth / 2; 7941 } else { 7942 x += (int) (left + data.mXPercentInDoc * width 7943 - mScrollX - data.mXPercentInView * viewWidth); 7944 } 7945 if (DebugFlags.WEB_VIEW) { 7946 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7947 width + ",maxWidth=" + maxWidth + 7948 ",viewWidth=" + viewWidth + ",x=" 7949 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7950 ",xPercentInView=" + data.mXPercentInView+ ")"); 7951 } 7952 // use the passing content width to cap x as the current 7953 // mContentWidth may not be updated yet 7954 x = Math.max(0, 7955 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7956 int top = contentToViewY(data.mTop); 7957 int height = contentToViewDimension(data.mHeight); 7958 int maxHeight = contentToViewDimension(data.mContentHeight); 7959 int viewHeight = getViewHeight(); 7960 int y = (int) (top + data.mYPercentInDoc * height - 7961 data.mYPercentInView * viewHeight); 7962 if (DebugFlags.WEB_VIEW) { 7963 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7964 height + ",maxHeight=" + maxHeight + 7965 ",viewHeight=" + viewHeight + ",y=" 7966 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7967 ",yPercentInView=" + data.mYPercentInView+ ")"); 7968 } 7969 // use the passing content height to cap y as the current 7970 // mContentHeight may not be updated yet 7971 y = Math.max(0, 7972 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7973 // We need to take into account the visible title height 7974 // when scrolling since y is an absolute view position. 7975 y = Math.max(0, y - getVisibleTitleHeight()); 7976 scrollTo(x, y); 7977 } 7978 break; 7979 7980 case CENTER_FIT_RECT: 7981 centerFitRect((Rect)msg.obj); 7982 break; 7983 7984 case SET_SCROLLBAR_MODES: 7985 mHorizontalScrollBarMode = msg.arg1; 7986 mVerticalScrollBarMode = msg.arg2; 7987 break; 7988 7989 case SELECTION_STRING_CHANGED: 7990 if (mAccessibilityInjector != null) { 7991 String selectionString = (String) msg.obj; 7992 mAccessibilityInjector.onSelectionStringChange(selectionString); 7993 } 7994 break; 7995 7996 case SET_TOUCH_HIGHLIGHT_RECTS: 7997 invalidate(mTouchHighlightRegion.getBounds()); 7998 mTouchHighlightRegion.setEmpty(); 7999 if (msg.obj != null) { 8000 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 8001 for (Rect rect : rects) { 8002 Rect viewRect = contentToViewRect(rect); 8003 // some sites, like stories in nytimes.com, set 8004 // mouse event handler in the top div. It is not 8005 // user friendly to highlight the div if it covers 8006 // more than half of the screen. 8007 if (viewRect.width() < getWidth() >> 1 8008 || viewRect.height() < getHeight() >> 1) { 8009 mTouchHighlightRegion.union(viewRect); 8010 invalidate(viewRect); 8011 } else { 8012 Log.w(LOGTAG, "Skip the huge selection rect:" 8013 + viewRect); 8014 } 8015 } 8016 } 8017 break; 8018 8019 case SAVE_WEBARCHIVE_FINISHED: 8020 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 8021 if (saveMessage.mCallback != null) { 8022 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 8023 } 8024 break; 8025 8026 case SET_AUTOFILLABLE: 8027 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 8028 if (mWebTextView != null) { 8029 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 8030 rebuildWebTextView(); 8031 } 8032 break; 8033 8034 case AUTOFILL_COMPLETE: 8035 if (mWebTextView != null) { 8036 // Clear the WebTextView adapter when AutoFill finishes 8037 // so that the drop down gets cleared. 8038 mWebTextView.setAdapterCustom(null); 8039 } 8040 break; 8041 8042 case SELECT_AT: 8043 nativeSelectAt(msg.arg1, msg.arg2); 8044 break; 8045 8046 default: 8047 super.handleMessage(msg); 8048 break; 8049 } 8050 } 8051 } 8052 8053 /** 8054 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8055 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8056 */ 8057 private void updateTextSelectionFromMessage(int nodePointer, 8058 int textGeneration, WebViewCore.TextSelectionData data) { 8059 if (inEditingMode() 8060 && mWebTextView.isSameTextField(nodePointer) 8061 && textGeneration == mTextGeneration) { 8062 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8063 } 8064 } 8065 8066 // Class used to use a dropdown for a <select> element 8067 private class InvokeListBox implements Runnable { 8068 // Whether the listbox allows multiple selection. 8069 private boolean mMultiple; 8070 // Passed in to a list with multiple selection to tell 8071 // which items are selected. 8072 private int[] mSelectedArray; 8073 // Passed in to a list with single selection to tell 8074 // where the initial selection is. 8075 private int mSelection; 8076 8077 private Container[] mContainers; 8078 8079 // Need these to provide stable ids to my ArrayAdapter, 8080 // which normally does not have stable ids. (Bug 1250098) 8081 private class Container extends Object { 8082 /** 8083 * Possible values for mEnabled. Keep in sync with OptionStatus in 8084 * WebViewCore.cpp 8085 */ 8086 final static int OPTGROUP = -1; 8087 final static int OPTION_DISABLED = 0; 8088 final static int OPTION_ENABLED = 1; 8089 8090 String mString; 8091 int mEnabled; 8092 int mId; 8093 8094 @Override 8095 public String toString() { 8096 return mString; 8097 } 8098 } 8099 8100 /** 8101 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8102 * and allow filtering. 8103 */ 8104 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8105 public MyArrayListAdapter() { 8106 super(mContext, 8107 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8108 com.android.internal.R.layout.webview_select_singlechoice, 8109 mContainers); 8110 } 8111 8112 @Override 8113 public View getView(int position, View convertView, 8114 ViewGroup parent) { 8115 // Always pass in null so that we will get a new CheckedTextView 8116 // Otherwise, an item which was previously used as an <optgroup> 8117 // element (i.e. has no check), could get used as an <option> 8118 // element, which needs a checkbox/radio, but it would not have 8119 // one. 8120 convertView = super.getView(position, null, parent); 8121 Container c = item(position); 8122 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8123 // ListView does not draw dividers between disabled and 8124 // enabled elements. Use a LinearLayout to provide dividers 8125 LinearLayout layout = new LinearLayout(mContext); 8126 layout.setOrientation(LinearLayout.VERTICAL); 8127 if (position > 0) { 8128 View dividerTop = new View(mContext); 8129 dividerTop.setBackgroundResource( 8130 android.R.drawable.divider_horizontal_bright); 8131 layout.addView(dividerTop); 8132 } 8133 8134 if (Container.OPTGROUP == c.mEnabled) { 8135 // Currently select_dialog_multichoice uses CheckedTextViews. 8136 // If that changes, the class cast will no longer be valid. 8137 if (mMultiple) { 8138 Assert.assertTrue(convertView instanceof CheckedTextView); 8139 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8140 } 8141 } else { 8142 // c.mEnabled == Container.OPTION_DISABLED 8143 // Draw the disabled element in a disabled state. 8144 convertView.setEnabled(false); 8145 } 8146 8147 layout.addView(convertView); 8148 if (position < getCount() - 1) { 8149 View dividerBottom = new View(mContext); 8150 dividerBottom.setBackgroundResource( 8151 android.R.drawable.divider_horizontal_bright); 8152 layout.addView(dividerBottom); 8153 } 8154 return layout; 8155 } 8156 return convertView; 8157 } 8158 8159 @Override 8160 public boolean hasStableIds() { 8161 // AdapterView's onChanged method uses this to determine whether 8162 // to restore the old state. Return false so that the old (out 8163 // of date) state does not replace the new, valid state. 8164 return false; 8165 } 8166 8167 private Container item(int position) { 8168 if (position < 0 || position >= getCount()) { 8169 return null; 8170 } 8171 return (Container) getItem(position); 8172 } 8173 8174 @Override 8175 public long getItemId(int position) { 8176 Container item = item(position); 8177 if (item == null) { 8178 return -1; 8179 } 8180 return item.mId; 8181 } 8182 8183 @Override 8184 public boolean areAllItemsEnabled() { 8185 return false; 8186 } 8187 8188 @Override 8189 public boolean isEnabled(int position) { 8190 Container item = item(position); 8191 if (item == null) { 8192 return false; 8193 } 8194 return Container.OPTION_ENABLED == item.mEnabled; 8195 } 8196 } 8197 8198 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8199 mMultiple = true; 8200 mSelectedArray = selected; 8201 8202 int length = array.length; 8203 mContainers = new Container[length]; 8204 for (int i = 0; i < length; i++) { 8205 mContainers[i] = new Container(); 8206 mContainers[i].mString = array[i]; 8207 mContainers[i].mEnabled = enabled[i]; 8208 mContainers[i].mId = i; 8209 } 8210 } 8211 8212 private InvokeListBox(String[] array, int[] enabled, int selection) { 8213 mSelection = selection; 8214 mMultiple = false; 8215 8216 int length = array.length; 8217 mContainers = new Container[length]; 8218 for (int i = 0; i < length; i++) { 8219 mContainers[i] = new Container(); 8220 mContainers[i].mString = array[i]; 8221 mContainers[i].mEnabled = enabled[i]; 8222 mContainers[i].mId = i; 8223 } 8224 } 8225 8226 /* 8227 * Whenever the data set changes due to filtering, this class ensures 8228 * that the checked item remains checked. 8229 */ 8230 private class SingleDataSetObserver extends DataSetObserver { 8231 private long mCheckedId; 8232 private ListView mListView; 8233 private Adapter mAdapter; 8234 8235 /* 8236 * Create a new observer. 8237 * @param id The ID of the item to keep checked. 8238 * @param l ListView for getting and clearing the checked states 8239 * @param a Adapter for getting the IDs 8240 */ 8241 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8242 mCheckedId = id; 8243 mListView = l; 8244 mAdapter = a; 8245 } 8246 8247 @Override 8248 public void onChanged() { 8249 // The filter may have changed which item is checked. Find the 8250 // item that the ListView thinks is checked. 8251 int position = mListView.getCheckedItemPosition(); 8252 long id = mAdapter.getItemId(position); 8253 if (mCheckedId != id) { 8254 // Clear the ListView's idea of the checked item, since 8255 // it is incorrect 8256 mListView.clearChoices(); 8257 // Search for mCheckedId. If it is in the filtered list, 8258 // mark it as checked 8259 int count = mAdapter.getCount(); 8260 for (int i = 0; i < count; i++) { 8261 if (mAdapter.getItemId(i) == mCheckedId) { 8262 mListView.setItemChecked(i, true); 8263 break; 8264 } 8265 } 8266 } 8267 } 8268 } 8269 8270 public void run() { 8271 final ListView listView = (ListView) LayoutInflater.from(mContext) 8272 .inflate(com.android.internal.R.layout.select_dialog, null); 8273 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8274 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8275 .setView(listView).setCancelable(true) 8276 .setInverseBackgroundForced(true); 8277 8278 if (mMultiple) { 8279 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8280 public void onClick(DialogInterface dialog, int which) { 8281 mWebViewCore.sendMessage( 8282 EventHub.LISTBOX_CHOICES, 8283 adapter.getCount(), 0, 8284 listView.getCheckedItemPositions()); 8285 }}); 8286 b.setNegativeButton(android.R.string.cancel, 8287 new DialogInterface.OnClickListener() { 8288 public void onClick(DialogInterface dialog, int which) { 8289 mWebViewCore.sendMessage( 8290 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8291 }}); 8292 } 8293 mListBoxDialog = b.create(); 8294 listView.setAdapter(adapter); 8295 listView.setFocusableInTouchMode(true); 8296 // There is a bug (1250103) where the checks in a ListView with 8297 // multiple items selected are associated with the positions, not 8298 // the ids, so the items do not properly retain their checks when 8299 // filtered. Do not allow filtering on multiple lists until 8300 // that bug is fixed. 8301 8302 listView.setTextFilterEnabled(!mMultiple); 8303 if (mMultiple) { 8304 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8305 int length = mSelectedArray.length; 8306 for (int i = 0; i < length; i++) { 8307 listView.setItemChecked(mSelectedArray[i], true); 8308 } 8309 } else { 8310 listView.setOnItemClickListener(new OnItemClickListener() { 8311 public void onItemClick(AdapterView<?> parent, View v, 8312 int position, long id) { 8313 // Rather than sending the message right away, send it 8314 // after the page regains focus. 8315 mListBoxMessage = Message.obtain(null, 8316 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8317 mListBoxDialog.dismiss(); 8318 mListBoxDialog = null; 8319 } 8320 }); 8321 if (mSelection != -1) { 8322 listView.setSelection(mSelection); 8323 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8324 listView.setItemChecked(mSelection, true); 8325 DataSetObserver observer = new SingleDataSetObserver( 8326 adapter.getItemId(mSelection), listView, adapter); 8327 adapter.registerDataSetObserver(observer); 8328 } 8329 } 8330 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8331 public void onCancel(DialogInterface dialog) { 8332 mWebViewCore.sendMessage( 8333 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8334 mListBoxDialog = null; 8335 } 8336 }); 8337 mListBoxDialog.show(); 8338 } 8339 } 8340 8341 private Message mListBoxMessage; 8342 8343 /* 8344 * Request a dropdown menu for a listbox with multiple selection. 8345 * 8346 * @param array Labels for the listbox. 8347 * @param enabledArray State for each element in the list. See static 8348 * integers in Container class. 8349 * @param selectedArray Which positions are initally selected. 8350 */ 8351 void requestListBox(String[] array, int[] enabledArray, int[] 8352 selectedArray) { 8353 mPrivateHandler.post( 8354 new InvokeListBox(array, enabledArray, selectedArray)); 8355 } 8356 8357 /* 8358 * Request a dropdown menu for a listbox with single selection or a single 8359 * <select> element. 8360 * 8361 * @param array Labels for the listbox. 8362 * @param enabledArray State for each element in the list. See static 8363 * integers in Container class. 8364 * @param selection Which position is initally selected. 8365 */ 8366 void requestListBox(String[] array, int[] enabledArray, int selection) { 8367 mPrivateHandler.post( 8368 new InvokeListBox(array, enabledArray, selection)); 8369 } 8370 8371 // called by JNI 8372 private void sendMoveFocus(int frame, int node) { 8373 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8374 new WebViewCore.CursorData(frame, node, 0, 0)); 8375 } 8376 8377 // called by JNI 8378 private void sendMoveMouse(int frame, int node, int x, int y) { 8379 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8380 new WebViewCore.CursorData(frame, node, x, y)); 8381 } 8382 8383 /* 8384 * Send a mouse move event to the webcore thread. 8385 * 8386 * @param removeFocus Pass true to remove the WebTextView, if present. 8387 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8388 * called by JNI 8389 */ 8390 @SuppressWarnings("unused") 8391 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8392 if (removeFocus) { 8393 clearTextEntry(); 8394 } 8395 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8396 stopPaintingCaret ? 1 : 0, 0, 8397 cursorData()); 8398 } 8399 8400 /** 8401 * Called by JNI to send a message to the webcore thread that the user 8402 * touched the webpage. 8403 * @param touchGeneration Generation number of the touch, to ignore touches 8404 * after a new one has been generated. 8405 * @param frame Pointer to the frame holding the node that was touched. 8406 * @param node Pointer to the node touched. 8407 * @param x x-position of the touch. 8408 * @param y y-position of the touch. 8409 */ 8410 private void sendMotionUp(int touchGeneration, 8411 int frame, int node, int x, int y) { 8412 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8413 touchUpData.mMoveGeneration = touchGeneration; 8414 touchUpData.mFrame = frame; 8415 touchUpData.mNode = node; 8416 touchUpData.mX = x; 8417 touchUpData.mY = y; 8418 touchUpData.mNativeLayer = nativeScrollableLayer( 8419 x, y, touchUpData.mNativeLayerRect, null); 8420 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8421 } 8422 8423 8424 private int getScaledMaxXScroll() { 8425 int width; 8426 if (mHeightCanMeasure == false) { 8427 width = getViewWidth() / 4; 8428 } else { 8429 Rect visRect = new Rect(); 8430 calcOurVisibleRect(visRect); 8431 width = visRect.width() / 2; 8432 } 8433 // FIXME the divisor should be retrieved from somewhere 8434 return viewToContentX(width); 8435 } 8436 8437 private int getScaledMaxYScroll() { 8438 int height; 8439 if (mHeightCanMeasure == false) { 8440 height = getViewHeight() / 4; 8441 } else { 8442 Rect visRect = new Rect(); 8443 calcOurVisibleRect(visRect); 8444 height = visRect.height() / 2; 8445 } 8446 // FIXME the divisor should be retrieved from somewhere 8447 // the closest thing today is hard-coded into ScrollView.java 8448 // (from ScrollView.java, line 363) int maxJump = height/2; 8449 return Math.round(height * mZoomManager.getInvScale()); 8450 } 8451 8452 /** 8453 * Called by JNI to invalidate view 8454 */ 8455 private void viewInvalidate() { 8456 invalidate(); 8457 } 8458 8459 /** 8460 * Pass the key directly to the page. This assumes that 8461 * nativePageShouldHandleShiftAndArrows() returned true. 8462 */ 8463 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8464 int keyEventAction; 8465 int eventHubAction; 8466 if (down) { 8467 keyEventAction = KeyEvent.ACTION_DOWN; 8468 eventHubAction = EventHub.KEY_DOWN; 8469 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8470 } else { 8471 keyEventAction = KeyEvent.ACTION_UP; 8472 eventHubAction = EventHub.KEY_UP; 8473 } 8474 8475 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8476 1, (metaState & KeyEvent.META_SHIFT_ON) 8477 | (metaState & KeyEvent.META_ALT_ON) 8478 | (metaState & KeyEvent.META_SYM_ON) 8479 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8480 mWebViewCore.sendMessage(eventHubAction, event); 8481 } 8482 8483 // return true if the key was handled 8484 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8485 long time) { 8486 if (mNativeClass == 0) { 8487 return false; 8488 } 8489 mInitialHitTestResult = null; 8490 mLastCursorTime = time; 8491 mLastCursorBounds = nativeGetCursorRingBounds(); 8492 boolean keyHandled 8493 = nativeMoveCursor(keyCode, count, noScroll) == false; 8494 if (DebugFlags.WEB_VIEW) { 8495 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8496 + " mLastCursorTime=" + mLastCursorTime 8497 + " handled=" + keyHandled); 8498 } 8499 if (keyHandled == false) { 8500 return keyHandled; 8501 } 8502 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8503 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8504 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8505 // set last touch so that context menu related functions will work 8506 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8507 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8508 if (mHeightCanMeasure == false) { 8509 return keyHandled; 8510 } 8511 Rect visRect = new Rect(); 8512 calcOurVisibleRect(visRect); 8513 Rect outset = new Rect(visRect); 8514 int maxXScroll = visRect.width() / 2; 8515 int maxYScroll = visRect.height() / 2; 8516 outset.inset(-maxXScroll, -maxYScroll); 8517 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8518 return keyHandled; 8519 } 8520 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8521 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8522 maxXScroll); 8523 if (maxH > 0) { 8524 pinScrollBy(maxH, 0, true, 0); 8525 } else { 8526 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8527 -maxXScroll); 8528 if (maxH < 0) { 8529 pinScrollBy(maxH, 0, true, 0); 8530 } 8531 } 8532 if (mLastCursorBounds.isEmpty()) return keyHandled; 8533 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8534 return keyHandled; 8535 } 8536 if (DebugFlags.WEB_VIEW) { 8537 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8538 + contentCursorRingBounds); 8539 } 8540 requestRectangleOnScreen(viewCursorRingBounds); 8541 return keyHandled; 8542 } 8543 8544 /** 8545 * @return Whether accessibility script has been injected. 8546 */ 8547 private boolean accessibilityScriptInjected() { 8548 // TODO: Maybe the injected script should announce its presence in 8549 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8550 // will check that as one of the conditions it looks for 8551 return mAccessibilityScriptInjected; 8552 } 8553 8554 /** 8555 * Set the background color. It's white by default. Pass 8556 * zero to make the view transparent. 8557 * @param color the ARGB color described by Color.java 8558 */ 8559 @Override 8560 public void setBackgroundColor(int color) { 8561 mBackgroundColor = color; 8562 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8563 } 8564 8565 public void debugDump() { 8566 nativeDebugDump(); 8567 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8568 } 8569 8570 /** 8571 * Draw the HTML page into the specified canvas. This call ignores any 8572 * view-specific zoom, scroll offset, or other changes. It does not draw 8573 * any view-specific chrome, such as progress or URL bars. 8574 * 8575 * @hide only needs to be accessible to Browser and testing 8576 */ 8577 public void drawPage(Canvas canvas) { 8578 nativeDraw(canvas, 0, 0, false); 8579 } 8580 8581 /** 8582 * Enable the communication b/t the webView and VideoViewProxy 8583 * 8584 * @hide only used by the Browser 8585 */ 8586 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 8587 mHTML5VideoViewProxy = proxy; 8588 } 8589 8590 /** 8591 * Enable expanded tiles bound for smoother scrolling. 8592 * 8593 * @hide only used by the Browser 8594 */ 8595 public void setExpandedTileBounds(boolean enabled) { 8596 nativeSetExpandedTileBounds(enabled); 8597 } 8598 8599 /** 8600 * Set the time to wait between passing touches to WebCore. See also the 8601 * TOUCH_SENT_INTERVAL member for further discussion. 8602 * 8603 * @hide This is only used by the DRT test application. 8604 */ 8605 public void setTouchInterval(int interval) { 8606 mCurrentTouchInterval = interval; 8607 } 8608 8609 /** 8610 * Update our cache with updatedText. 8611 * @param updatedText The new text to put in our cache. 8612 */ 8613 /* package */ void updateCachedTextfield(String updatedText) { 8614 // Also place our generation number so that when we look at the cache 8615 // we recognize that it is up to date. 8616 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8617 } 8618 8619 /*package*/ void autoFillForm(int autoFillQueryId) { 8620 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8621 } 8622 8623 /* package */ ViewManager getViewManager() { 8624 return mViewManager; 8625 } 8626 8627 private native int nativeCacheHitFramePointer(); 8628 private native boolean nativeCacheHitIsPlugin(); 8629 private native Rect nativeCacheHitNodeBounds(); 8630 private native int nativeCacheHitNodePointer(); 8631 /* package */ native void nativeClearCursor(); 8632 private native void nativeCreate(int ptr, String drawableDir, AssetManager am); 8633 private native int nativeCursorFramePointer(); 8634 private native Rect nativeCursorNodeBounds(); 8635 private native int nativeCursorNodePointer(); 8636 private native boolean nativeCursorIntersects(Rect visibleRect); 8637 private native boolean nativeCursorIsAnchor(); 8638 private native boolean nativeCursorIsTextInput(); 8639 private native Point nativeCursorPosition(); 8640 private native String nativeCursorText(); 8641 /** 8642 * Returns true if the native cursor node says it wants to handle key events 8643 * (ala plugins). This can only be called if mNativeClass is non-zero! 8644 */ 8645 private native boolean nativeCursorWantsKeyEvents(); 8646 private native void nativeDebugDump(); 8647 private native void nativeDestroy(); 8648 8649 /** 8650 * Draw the picture set with a background color and extra. If 8651 * "splitIfNeeded" is true and the return value is not 0, the return value 8652 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8653 * native allocation can be freed. 8654 */ 8655 private native int nativeDraw(Canvas canvas, int color, int extra, 8656 boolean splitIfNeeded); 8657 private native void nativeDumpDisplayTree(String urlOrNull); 8658 private native boolean nativeEvaluateLayersAnimations(); 8659 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 8660 float scale, int extras); 8661 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 8662 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8663 private native void nativeExtendSelection(int x, int y); 8664 private native int nativeFindAll(String findLower, String findUpper, 8665 boolean sameAsLastSearch); 8666 private native void nativeFindNext(boolean forward); 8667 /* package */ native int nativeFocusCandidateFramePointer(); 8668 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8669 /* package */ native boolean nativeFocusCandidateIsPassword(); 8670 private native boolean nativeFocusCandidateIsRtlText(); 8671 private native boolean nativeFocusCandidateIsTextInput(); 8672 /* package */ native int nativeFocusCandidateMaxLength(); 8673 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8674 /* package */ native String nativeFocusCandidateName(); 8675 private native Rect nativeFocusCandidateNodeBounds(); 8676 /** 8677 * @return A Rect with left, top, right, bottom set to the corresponding 8678 * padding values in the focus candidate, if it is a textfield/textarea with 8679 * a style. Otherwise return null. This is not actually a rectangle; Rect 8680 * is being used to pass four integers. 8681 */ 8682 private native Rect nativeFocusCandidatePaddingRect(); 8683 /* package */ native int nativeFocusCandidatePointer(); 8684 private native String nativeFocusCandidateText(); 8685 /* package */ native float nativeFocusCandidateTextSize(); 8686 /* package */ native int nativeFocusCandidateLineHeight(); 8687 /** 8688 * Returns an integer corresponding to WebView.cpp::type. 8689 * See WebTextView.setType() 8690 */ 8691 private native int nativeFocusCandidateType(); 8692 private native boolean nativeFocusIsPlugin(); 8693 private native Rect nativeFocusNodeBounds(); 8694 /* package */ native int nativeFocusNodePointer(); 8695 private native Rect nativeGetCursorRingBounds(); 8696 private native String nativeGetSelection(); 8697 private native boolean nativeHasCursorNode(); 8698 private native boolean nativeHasFocusNode(); 8699 private native void nativeHideCursor(); 8700 private native boolean nativeHitSelection(int x, int y); 8701 private native String nativeImageURI(int x, int y); 8702 private native void nativeInstrumentReport(); 8703 private native Rect nativeLayerBounds(int layer); 8704 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8705 // return true if the page has been scrolled 8706 private native boolean nativeMotionUp(int x, int y, int slop); 8707 // returns false if it handled the key 8708 private native boolean nativeMoveCursor(int keyCode, int count, 8709 boolean noScroll); 8710 private native int nativeMoveGeneration(); 8711 private native void nativeMoveSelection(int x, int y); 8712 /** 8713 * @return true if the page should get the shift and arrow keys, rather 8714 * than select text/navigation. 8715 * 8716 * If the focus is a plugin, or if the focus and cursor match and are 8717 * a contentEditable element, then the page should handle these keys. 8718 */ 8719 private native boolean nativePageShouldHandleShiftAndArrows(); 8720 private native boolean nativePointInNavCache(int x, int y, int slop); 8721 // Like many other of our native methods, you must make sure that 8722 // mNativeClass is not null before calling this method. 8723 private native void nativeRecordButtons(boolean focused, 8724 boolean pressed, boolean invalidate); 8725 private native void nativeResetSelection(); 8726 private native Point nativeSelectableText(); 8727 private native void nativeSelectAll(); 8728 private native void nativeSelectBestAt(Rect rect); 8729 private native void nativeSelectAt(int x, int y); 8730 private native int nativeSelectionX(); 8731 private native int nativeSelectionY(); 8732 private native int nativeFindIndex(); 8733 private native void nativeSetExtendSelection(); 8734 private native void nativeSetFindIsEmpty(); 8735 private native void nativeSetFindIsUp(boolean isUp); 8736 private native void nativeSetHeightCanMeasure(boolean measure); 8737 private native void nativeSetBaseLayer(int layer, Region invalRegion, 8738 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 8739 private native void nativeShowCursorTimed(); 8740 private native void nativeReplaceBaseContent(int content); 8741 private native void nativeCopyBaseContentToPicture(Picture pict); 8742 private native boolean nativeHasContent(); 8743 private native void nativeSetSelectionPointer(boolean set, 8744 float scale, int x, int y); 8745 private native boolean nativeStartSelection(int x, int y); 8746 private native void nativeStopGL(); 8747 private native Rect nativeSubtractLayers(Rect content); 8748 private native int nativeTextGeneration(); 8749 // Never call this version except by updateCachedTextfield(String) - 8750 // we always want to pass in our generation number. 8751 private native void nativeUpdateCachedTextfield(String updatedText, 8752 int generation); 8753 private native boolean nativeWordSelection(int x, int y); 8754 // return NO_LEFTEDGE means failure. 8755 static final int NO_LEFTEDGE = -1; 8756 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8757 8758 private native void nativeSetExpandedTileBounds(boolean enabled); 8759 8760 // Returns a pointer to the scrollable LayerAndroid at the given point. 8761 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8762 Rect scrollBounds); 8763 /** 8764 * Scroll the specified layer. 8765 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8766 * @param newX Destination x position to which to scroll. 8767 * @param newY Destination y position to which to scroll. 8768 * @return True if the layer is successfully scrolled. 8769 */ 8770 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8771} 8772