WebView.java revision 464b690ada24428f3dff4102659048db7128835f
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.app.AlertDialog; 21import android.content.BroadcastReceiver; 22import android.content.ClipboardManager; 23import android.content.Context; 24import android.content.DialogInterface; 25import android.content.DialogInterface.OnCancelListener; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.pm.PackageInfo; 29import android.content.pm.PackageManager; 30import android.content.res.Configuration; 31import android.database.DataSetObserver; 32import android.graphics.Bitmap; 33import android.graphics.BitmapFactory; 34import android.graphics.BitmapShader; 35import android.graphics.Canvas; 36import android.graphics.Color; 37import android.graphics.CornerPathEffect; 38import android.graphics.DrawFilter; 39import android.graphics.Paint; 40import android.graphics.PaintFlagsDrawFilter; 41import android.graphics.Picture; 42import android.graphics.Point; 43import android.graphics.Rect; 44import android.graphics.RectF; 45import android.graphics.Region; 46import android.graphics.SurfaceTexture; 47import android.graphics.Shader; 48import android.graphics.drawable.Drawable; 49import android.net.Proxy; 50import android.net.ProxyProperties; 51import android.net.Uri; 52import android.net.http.SslCertificate; 53import android.os.AsyncTask; 54import android.os.Bundle; 55import android.os.Handler; 56import android.os.Message; 57import android.provider.Settings; 58import android.speech.tts.TextToSpeech; 59import android.text.Selection; 60import android.text.Spannable; 61import android.util.AttributeSet; 62import android.util.EventLog; 63import android.util.Log; 64import android.view.Gravity; 65import android.view.HardwareCanvas; 66import android.view.InputDevice; 67import android.view.KeyCharacterMap; 68import android.view.KeyEvent; 69import android.view.LayoutInflater; 70import android.view.MotionEvent; 71import android.view.ScaleGestureDetector; 72import android.view.SoundEffectConstants; 73import android.view.VelocityTracker; 74import android.view.View; 75import android.view.ViewConfiguration; 76import android.view.ViewGroup; 77import android.view.ViewParent; 78import android.view.ViewTreeObserver; 79import android.view.accessibility.AccessibilityManager; 80import android.view.inputmethod.EditorInfo; 81import android.view.inputmethod.InputConnection; 82import android.view.inputmethod.InputMethodManager; 83import android.webkit.WebTextView.AutoCompleteAdapter; 84import android.webkit.WebViewCore.EventHub; 85import android.webkit.WebViewCore.TouchEventData; 86import android.webkit.WebViewCore.TouchHighlightData; 87import android.widget.AbsoluteLayout; 88import android.widget.Adapter; 89import android.widget.AdapterView; 90import android.widget.AdapterView.OnItemClickListener; 91import android.widget.ArrayAdapter; 92import android.widget.CheckedTextView; 93import android.widget.LinearLayout; 94import android.widget.ListView; 95import android.widget.OverScroller; 96import android.widget.Toast; 97 98import java.io.File; 99import java.io.FileInputStream; 100import java.io.FileNotFoundException; 101import java.io.FileOutputStream; 102import java.net.URLDecoder; 103import java.util.ArrayList; 104import java.util.HashMap; 105import java.util.HashSet; 106import java.util.List; 107import java.util.Map; 108import java.util.Set; 109import java.util.Vector; 110import java.util.regex.Matcher; 111import java.util.regex.Pattern; 112 113import junit.framework.Assert; 114 115/** 116 * <p>A View that displays web pages. This class is the basis upon which you 117 * can roll your own web browser or simply display some online content within your Activity. 118 * It uses the WebKit rendering engine to display 119 * web pages and includes methods to navigate forward and backward 120 * through a history, zoom in and out, perform text searches and more.</p> 121 * <p>To enable the built-in zoom, set 122 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 123 * (introduced in API version 3). 124 * <p>Note that, in order for your Activity to access the Internet and load web pages 125 * in a WebView, you must add the {@code INTERNET} permissions to your 126 * Android Manifest file:</p> 127 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 128 * 129 * <p>This must be a child of the <a 130 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 131 * element.</p> 132 * 133 * <p>See the <a href="{@docRoot}resources/tutorials/views/hello-webview.html">Web View 134 * tutorial</a>.</p> 135 * 136 * <h3>Basic usage</h3> 137 * 138 * <p>By default, a WebView provides no browser-like widgets, does not 139 * enable JavaScript and web page errors are ignored. If your goal is only 140 * to display some HTML as a part of your UI, this is probably fine; 141 * the user won't need to interact with the web page beyond reading 142 * it, and the web page won't need to interact with the user. If you 143 * actually want a full-blown web browser, then you probably want to 144 * invoke the Browser application with a URL Intent rather than show it 145 * with a WebView. For example: 146 * <pre> 147 * Uri uri = Uri.parse("http://www.example.com"); 148 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 149 * startActivity(intent); 150 * </pre> 151 * <p>See {@link android.content.Intent} for more information.</p> 152 * 153 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 154 * or set the entire Activity window as a WebView during {@link 155 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 156 * <pre class="prettyprint"> 157 * WebView webview = new WebView(this); 158 * setContentView(webview); 159 * </pre> 160 * 161 * <p>Then load the desired web page:</p> 162 * <pre> 163 * // Simplest usage: note that an exception will NOT be thrown 164 * // if there is an error loading this page (see below). 165 * webview.loadUrl("http://slashdot.org/"); 166 * 167 * // OR, you can also load from an HTML string: 168 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 169 * webview.loadData(summary, "text/html", "utf-8"); 170 * // ... although note that there are restrictions on what this HTML can do. 171 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 172 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 173 * </pre> 174 * 175 * <p>A WebView has several customization points where you can add your 176 * own behavior. These are:</p> 177 * 178 * <ul> 179 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 180 * This class is called when something that might impact a 181 * browser UI happens, for instance, progress updates and 182 * JavaScript alerts are sent here (see <a 183 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 184 * </li> 185 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 186 * It will be called when things happen that impact the 187 * rendering of the content, eg, errors or form submissions. You 188 * can also intercept URL loading here (via {@link 189 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 190 * shouldOverrideUrlLoading()}).</li> 191 * <li>Modifying the {@link android.webkit.WebSettings}, such as 192 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 193 * setJavaScriptEnabled()}. </li> 194 * <li>Adding JavaScript-to-Java interfaces with the {@link 195 * android.webkit.WebView#addJavascriptInterface} method. 196 * This lets you bind Java objects into the WebView so they can be 197 * controlled from the web pages JavaScript.</li> 198 * </ul> 199 * 200 * <p>Here's a more complicated example, showing error handling, 201 * settings, and progress notification:</p> 202 * 203 * <pre class="prettyprint"> 204 * // Let's display the progress in the activity title bar, like the 205 * // browser app does. 206 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 207 * 208 * webview.getSettings().setJavaScriptEnabled(true); 209 * 210 * final Activity activity = this; 211 * webview.setWebChromeClient(new WebChromeClient() { 212 * public void onProgressChanged(WebView view, int progress) { 213 * // Activities and WebViews measure progress with different scales. 214 * // The progress meter will automatically disappear when we reach 100% 215 * activity.setProgress(progress * 1000); 216 * } 217 * }); 218 * webview.setWebViewClient(new WebViewClient() { 219 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 220 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 221 * } 222 * }); 223 * 224 * webview.loadUrl("http://slashdot.org/"); 225 * </pre> 226 * 227 * <h3>Cookie and window management</h3> 228 * 229 * <p>For obvious security reasons, your application has its own 230 * cache, cookie store etc.—it does not share the Browser 231 * application's data. Cookies are managed on a separate thread, so 232 * operations like index building don't block the UI 233 * thread. Follow the instructions in {@link android.webkit.CookieSyncManager} 234 * if you want to use cookies in your application. 235 * </p> 236 * 237 * <p>By default, requests by the HTML to open new windows are 238 * ignored. This is true whether they be opened by JavaScript or by 239 * the target attribute on a link. You can customize your 240 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 241 * and render them in whatever manner you want.</p> 242 * 243 * <p>The standard behavior for an Activity is to be destroyed and 244 * recreated when the device orientation or any other configuration changes. This will cause 245 * the WebView to reload the current page. If you don't want that, you 246 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 247 * changes, and then just leave the WebView alone. It'll automatically 248 * re-orient itself as appropriate. Read <a 249 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 250 * more information about how to handle configuration changes during runtime.</p> 251 * 252 * 253 * <h3>Building web pages to support different screen densities</h3> 254 * 255 * <p>The screen density of a device is based on the screen resolution. A screen with low density 256 * has fewer available pixels per inch, where a screen with high density 257 * has more — sometimes significantly more — pixels per inch. The density of a 258 * screen is important because, other things being equal, a UI element (such as a button) whose 259 * height and width are defined in terms of screen pixels will appear larger on the lower density 260 * screen and smaller on the higher density screen. 261 * For simplicity, Android collapses all actual screen densities into three generalized densities: 262 * high, medium, and low.</p> 263 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 264 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 265 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 266 * are bigger). 267 * Starting with API Level 5 (Android 2.0), WebView supports DOM, CSS, and meta tag features to help 268 * you (as a web developer) target screens with different screen densities.</p> 269 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 270 * <ul> 271 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 272 * default scaling factor used for the current device. For example, if the value of {@code 273 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 274 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 275 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 276 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 277 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 278 * (discussed below), then you can stop this default scaling behavior.</li> 279 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 280 * densities for which this style sheet is to be used. The corresponding value should be either 281 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 282 * density, or high density screens, respectively. For example: 283 * <pre> 284 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 285 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 286 * which is the high density pixel ratio.</p> 287 * </li> 288 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 289 * this to specify the target density for which the web page is designed, using the following 290 * values: 291 * <ul> 292 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 293 * occurs.</li> 294 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 295 * as appropriate.</li> 296 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 297 * low density screens scale down. This is also the default behavior.</li> 298 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 299 * as appropriate.</li> 300 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 301 * values are 70-400).</li> 302 * </ul> 303 * <p>Here's an example meta tag to specify the target density:</p> 304 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 305 * </ul> 306 * <p>If you want to modify your web page for different densities, by using the {@code 307 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 308 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 309 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 310 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 311 * 312 * 313 */ 314@Widget 315public class WebView extends AbsoluteLayout 316 implements ViewTreeObserver.OnGlobalFocusChangeListener, 317 ViewGroup.OnHierarchyChangeListener { 318 319 private class InnerGlobalLayoutListener implements ViewTreeObserver.OnGlobalLayoutListener { 320 public void onGlobalLayout() { 321 if (isShown()) { 322 setGLRectViewport(); 323 } 324 } 325 } 326 327 private class InnerScrollChangedListener implements ViewTreeObserver.OnScrollChangedListener { 328 public void onScrollChanged() { 329 if (isShown()) { 330 setGLRectViewport(); 331 } 332 } 333 } 334 335 // The listener to capture global layout change event. 336 private InnerGlobalLayoutListener mGlobalLayoutListener = null; 337 338 // The listener to capture scroll event. 339 private InnerScrollChangedListener mScrollChangedListener = null; 340 341 // if AUTO_REDRAW_HACK is true, then the CALL key will toggle redrawing 342 // the screen all-the-time. Good for profiling our drawing code 343 static private final boolean AUTO_REDRAW_HACK = false; 344 // true means redraw the screen all-the-time. Only with AUTO_REDRAW_HACK 345 private boolean mAutoRedraw; 346 347 // Reference to the AlertDialog displayed by InvokeListBox. 348 // It's used to dismiss the dialog in destroy if not done before. 349 private AlertDialog mListBoxDialog = null; 350 351 static final String LOGTAG = "webview"; 352 353 private ZoomManager mZoomManager; 354 355 private final Rect mGLRectViewport = new Rect(); 356 private final Rect mViewRectViewport = new Rect(); 357 private boolean mGLViewportEmpty = false; 358 359 /** 360 * Transportation object for returning WebView across thread boundaries. 361 */ 362 public class WebViewTransport { 363 private WebView mWebview; 364 365 /** 366 * Set the WebView to the transportation object. 367 * @param webview The WebView to transport. 368 */ 369 public synchronized void setWebView(WebView webview) { 370 mWebview = webview; 371 } 372 373 /** 374 * Return the WebView object. 375 * @return WebView The transported WebView object. 376 */ 377 public synchronized WebView getWebView() { 378 return mWebview; 379 } 380 } 381 382 // A final CallbackProxy shared by WebViewCore and BrowserFrame. 383 private final CallbackProxy mCallbackProxy; 384 385 private final WebViewDatabase mDatabase; 386 387 // SSL certificate for the main top-level page (if secure) 388 private SslCertificate mCertificate; 389 390 // Native WebView pointer that is 0 until the native object has been 391 // created. 392 private int mNativeClass; 393 // This would be final but it needs to be set to null when the WebView is 394 // destroyed. 395 private WebViewCore mWebViewCore; 396 // Handler for dispatching UI messages. 397 /* package */ final Handler mPrivateHandler = new PrivateHandler(); 398 private WebTextView mWebTextView; 399 // Used to ignore changes to webkit text that arrives to the UI side after 400 // more key events. 401 private int mTextGeneration; 402 403 /* package */ void incrementTextGeneration() { mTextGeneration++; } 404 405 // Used by WebViewCore to create child views. 406 /* package */ final ViewManager mViewManager; 407 408 // Used to display in full screen mode 409 PluginFullScreenHolder mFullScreenHolder; 410 411 /** 412 * Position of the last touch event in pixels. 413 * Use integer to prevent loss of dragging delta calculation accuracy; 414 * which was done in float and converted to integer, and resulted in gradual 415 * and compounding touch position and view dragging mismatch. 416 */ 417 private int mLastTouchX; 418 private int mLastTouchY; 419 420 /** 421 * Time of the last touch event. 422 */ 423 private long mLastTouchTime; 424 425 /** 426 * Time of the last time sending touch event to WebViewCore 427 */ 428 private long mLastSentTouchTime; 429 430 /** 431 * The minimum elapsed time before sending another ACTION_MOVE event to 432 * WebViewCore. This really should be tuned for each type of the devices. 433 * For example in Google Map api test case, it takes Dream device at least 434 * 150ms to do a full cycle in the WebViewCore by processing a touch event, 435 * triggering the layout and drawing the picture. While the same process 436 * takes 60+ms on the current high speed device. If we make 437 * TOUCH_SENT_INTERVAL too small, there will be multiple touch events sent 438 * to WebViewCore queue and the real layout and draw events will be pushed 439 * to further, which slows down the refresh rate. Choose 50 to favor the 440 * current high speed devices. For Dream like devices, 100 is a better 441 * choice. Maybe make this in the buildspec later. 442 * (Update 12/14/2010: changed to 0 since current device should be able to 443 * handle the raw events and Map team voted to have the raw events too. 444 */ 445 private static final int TOUCH_SENT_INTERVAL = 0; 446 private int mCurrentTouchInterval = TOUCH_SENT_INTERVAL; 447 448 /** 449 * Helper class to get velocity for fling 450 */ 451 VelocityTracker mVelocityTracker; 452 private int mMaximumFling; 453 private float mLastVelocity; 454 private float mLastVelX; 455 private float mLastVelY; 456 457 // The id of the native layer being scrolled. 458 private int mScrollingLayer; 459 private Rect mScrollingLayerRect = new Rect(); 460 461 // only trigger accelerated fling if the new velocity is at least 462 // MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION times of the previous velocity 463 private static final float MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION = 0.2f; 464 465 /** 466 * Touch mode 467 */ 468 private int mTouchMode = TOUCH_DONE_MODE; 469 private static final int TOUCH_INIT_MODE = 1; 470 private static final int TOUCH_DRAG_START_MODE = 2; 471 private static final int TOUCH_DRAG_MODE = 3; 472 private static final int TOUCH_SHORTPRESS_START_MODE = 4; 473 private static final int TOUCH_SHORTPRESS_MODE = 5; 474 private static final int TOUCH_DOUBLE_TAP_MODE = 6; 475 private static final int TOUCH_DONE_MODE = 7; 476 private static final int TOUCH_PINCH_DRAG = 8; 477 private static final int TOUCH_DRAG_LAYER_MODE = 9; 478 479 // Whether to forward the touch events to WebCore 480 // Can only be set by WebKit via JNI. 481 private boolean mForwardTouchEvents = false; 482 483 // Whether to prevent default during touch. The initial value depends on 484 // mForwardTouchEvents. If WebCore wants all the touch events, it says yes 485 // for touch down. Otherwise UI will wait for the answer of the first 486 // confirmed move before taking over the control. 487 private static final int PREVENT_DEFAULT_NO = 0; 488 private static final int PREVENT_DEFAULT_MAYBE_YES = 1; 489 private static final int PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN = 2; 490 private static final int PREVENT_DEFAULT_YES = 3; 491 private static final int PREVENT_DEFAULT_IGNORE = 4; 492 private int mPreventDefault = PREVENT_DEFAULT_IGNORE; 493 494 // true when the touch movement exceeds the slop 495 private boolean mConfirmMove; 496 497 // if true, touch events will be first processed by WebCore, if prevent 498 // default is not set, the UI will continue handle them. 499 private boolean mDeferTouchProcess; 500 501 // to avoid interfering with the current touch events, track them 502 // separately. Currently no snapping or fling in the deferred process mode 503 private int mDeferTouchMode = TOUCH_DONE_MODE; 504 private float mLastDeferTouchX; 505 private float mLastDeferTouchY; 506 507 // To keep track of whether the current drag was initiated by a WebTextView, 508 // so that we know not to hide the cursor 509 boolean mDragFromTextInput; 510 511 // Whether or not to draw the cursor ring. 512 private boolean mDrawCursorRing = true; 513 514 // true if onPause has been called (and not onResume) 515 private boolean mIsPaused; 516 517 private HitTestResult mInitialHitTestResult; 518 519 /** 520 * Customizable constant 521 */ 522 // pre-computed square of ViewConfiguration.getScaledTouchSlop() 523 private int mTouchSlopSquare; 524 // pre-computed square of ViewConfiguration.getScaledDoubleTapSlop() 525 private int mDoubleTapSlopSquare; 526 // pre-computed density adjusted navigation slop 527 private int mNavSlop; 528 // This should be ViewConfiguration.getTapTimeout() 529 // But system time out is 100ms, which is too short for the browser. 530 // In the browser, if it switches out of tap too soon, jump tap won't work. 531 private static final int TAP_TIMEOUT = 200; 532 // This should be ViewConfiguration.getLongPressTimeout() 533 // But system time out is 500ms, which is too short for the browser. 534 // With a short timeout, it's difficult to treat trigger a short press. 535 private static final int LONG_PRESS_TIMEOUT = 1000; 536 // needed to avoid flinging after a pause of no movement 537 private static final int MIN_FLING_TIME = 250; 538 // draw unfiltered after drag is held without movement 539 private static final int MOTIONLESS_TIME = 100; 540 // The amount of content to overlap between two screens when going through 541 // pages with the space bar, in pixels. 542 private static final int PAGE_SCROLL_OVERLAP = 24; 543 544 /** 545 * These prevent calling requestLayout if either dimension is fixed. This 546 * depends on the layout parameters and the measure specs. 547 */ 548 boolean mWidthCanMeasure; 549 boolean mHeightCanMeasure; 550 551 // Remember the last dimensions we sent to the native side so we can avoid 552 // sending the same dimensions more than once. 553 int mLastWidthSent; 554 int mLastHeightSent; 555 // Since view height sent to webkit could be fixed to avoid relayout, this 556 // value records the last sent actual view height. 557 int mLastActualHeightSent; 558 559 private int mContentWidth; // cache of value from WebViewCore 560 private int mContentHeight; // cache of value from WebViewCore 561 562 // Need to have the separate control for horizontal and vertical scrollbar 563 // style than the View's single scrollbar style 564 private boolean mOverlayHorizontalScrollbar = true; 565 private boolean mOverlayVerticalScrollbar = false; 566 567 // our standard speed. this way small distances will be traversed in less 568 // time than large distances, but we cap the duration, so that very large 569 // distances won't take too long to get there. 570 private static final int STD_SPEED = 480; // pixels per second 571 // time for the longest scroll animation 572 private static final int MAX_DURATION = 750; // milliseconds 573 private static final int SLIDE_TITLE_DURATION = 500; // milliseconds 574 575 // Used by OverScrollGlow 576 OverScroller mScroller; 577 578 private boolean mInOverScrollMode = false; 579 private static Paint mOverScrollBackground; 580 private static Paint mOverScrollBorder; 581 582 private boolean mWrapContent; 583 private static final int MOTIONLESS_FALSE = 0; 584 private static final int MOTIONLESS_PENDING = 1; 585 private static final int MOTIONLESS_TRUE = 2; 586 private static final int MOTIONLESS_IGNORE = 3; 587 private int mHeldMotionless; 588 589 // An instance for injecting accessibility in WebViews with disabled 590 // JavaScript or ones for which no accessibility script exists 591 private AccessibilityInjector mAccessibilityInjector; 592 593 // flag indicating if accessibility script is injected so we 594 // know to handle Shift and arrows natively first 595 private boolean mAccessibilityScriptInjected; 596 597 // the color used to highlight the touch rectangles 598 private static final int mHightlightColor = 0x33000000; 599 // the round corner for the highlight path 600 private static final float TOUCH_HIGHLIGHT_ARC = 5.0f; 601 // the region indicating where the user touched on the screen 602 private Region mTouchHighlightRegion = new Region(); 603 // the paint for the touch highlight 604 private Paint mTouchHightlightPaint; 605 // debug only 606 private static final boolean DEBUG_TOUCH_HIGHLIGHT = true; 607 private static final int TOUCH_HIGHLIGHT_ELAPSE_TIME = 2000; 608 private Paint mTouchCrossHairColor; 609 private int mTouchHighlightX; 610 private int mTouchHighlightY; 611 612 // Basically this proxy is used to tell the Video to update layer tree at 613 // SetBaseLayer time and to pause when WebView paused. 614 private HTML5VideoViewProxy mHTML5VideoViewProxy; 615 616 /* 617 * Private message ids 618 */ 619 private static final int REMEMBER_PASSWORD = 1; 620 private static final int NEVER_REMEMBER_PASSWORD = 2; 621 private static final int SWITCH_TO_SHORTPRESS = 3; 622 private static final int SWITCH_TO_LONGPRESS = 4; 623 private static final int RELEASE_SINGLE_TAP = 5; 624 private static final int REQUEST_FORM_DATA = 6; 625 private static final int RESUME_WEBCORE_PRIORITY = 7; 626 private static final int DRAG_HELD_MOTIONLESS = 8; 627 private static final int AWAKEN_SCROLL_BARS = 9; 628 private static final int PREVENT_DEFAULT_TIMEOUT = 10; 629 private static final int SCROLL_SELECT_TEXT = 11; 630 631 632 private static final int FIRST_PRIVATE_MSG_ID = REMEMBER_PASSWORD; 633 private static final int LAST_PRIVATE_MSG_ID = SCROLL_SELECT_TEXT; 634 635 /* 636 * Package message ids 637 */ 638 static final int SCROLL_TO_MSG_ID = 101; 639 static final int NEW_PICTURE_MSG_ID = 105; 640 static final int UPDATE_TEXT_ENTRY_MSG_ID = 106; 641 static final int WEBCORE_INITIALIZED_MSG_ID = 107; 642 static final int UPDATE_TEXTFIELD_TEXT_MSG_ID = 108; 643 static final int UPDATE_ZOOM_RANGE = 109; 644 static final int UNHANDLED_NAV_KEY = 110; 645 static final int CLEAR_TEXT_ENTRY = 111; 646 static final int UPDATE_TEXT_SELECTION_MSG_ID = 112; 647 static final int SHOW_RECT_MSG_ID = 113; 648 static final int LONG_PRESS_CENTER = 114; 649 static final int PREVENT_TOUCH_ID = 115; 650 static final int WEBCORE_NEED_TOUCH_EVENTS = 116; 651 // obj=Rect in doc coordinates 652 static final int INVAL_RECT_MSG_ID = 117; 653 static final int REQUEST_KEYBOARD = 118; 654 static final int DO_MOTION_UP = 119; 655 static final int SHOW_FULLSCREEN = 120; 656 static final int HIDE_FULLSCREEN = 121; 657 static final int DOM_FOCUS_CHANGED = 122; 658 static final int REPLACE_BASE_CONTENT = 123; 659 static final int FORM_DID_BLUR = 124; 660 static final int RETURN_LABEL = 125; 661 static final int FIND_AGAIN = 126; 662 static final int CENTER_FIT_RECT = 127; 663 static final int REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID = 128; 664 static final int SET_SCROLLBAR_MODES = 129; 665 static final int SELECTION_STRING_CHANGED = 130; 666 static final int SET_TOUCH_HIGHLIGHT_RECTS = 131; 667 static final int SAVE_WEBARCHIVE_FINISHED = 132; 668 669 static final int SET_AUTOFILLABLE = 133; 670 static final int AUTOFILL_COMPLETE = 134; 671 672 static final int SELECT_AT = 135; 673 static final int SCREEN_ON = 136; 674 static final int ENTER_FULLSCREEN_VIDEO = 137; 675 676 private static final int FIRST_PACKAGE_MSG_ID = SCROLL_TO_MSG_ID; 677 private static final int LAST_PACKAGE_MSG_ID = SET_TOUCH_HIGHLIGHT_RECTS; 678 679 static final String[] HandlerPrivateDebugString = { 680 "REMEMBER_PASSWORD", // = 1; 681 "NEVER_REMEMBER_PASSWORD", // = 2; 682 "SWITCH_TO_SHORTPRESS", // = 3; 683 "SWITCH_TO_LONGPRESS", // = 4; 684 "RELEASE_SINGLE_TAP", // = 5; 685 "REQUEST_FORM_DATA", // = 6; 686 "RESUME_WEBCORE_PRIORITY", // = 7; 687 "DRAG_HELD_MOTIONLESS", // = 8; 688 "AWAKEN_SCROLL_BARS", // = 9; 689 "PREVENT_DEFAULT_TIMEOUT", // = 10; 690 "SCROLL_SELECT_TEXT" // = 11; 691 }; 692 693 static final String[] HandlerPackageDebugString = { 694 "SCROLL_TO_MSG_ID", // = 101; 695 "102", // = 102; 696 "103", // = 103; 697 "104", // = 104; 698 "NEW_PICTURE_MSG_ID", // = 105; 699 "UPDATE_TEXT_ENTRY_MSG_ID", // = 106; 700 "WEBCORE_INITIALIZED_MSG_ID", // = 107; 701 "UPDATE_TEXTFIELD_TEXT_MSG_ID", // = 108; 702 "UPDATE_ZOOM_RANGE", // = 109; 703 "UNHANDLED_NAV_KEY", // = 110; 704 "CLEAR_TEXT_ENTRY", // = 111; 705 "UPDATE_TEXT_SELECTION_MSG_ID", // = 112; 706 "SHOW_RECT_MSG_ID", // = 113; 707 "LONG_PRESS_CENTER", // = 114; 708 "PREVENT_TOUCH_ID", // = 115; 709 "WEBCORE_NEED_TOUCH_EVENTS", // = 116; 710 "INVAL_RECT_MSG_ID", // = 117; 711 "REQUEST_KEYBOARD", // = 118; 712 "DO_MOTION_UP", // = 119; 713 "SHOW_FULLSCREEN", // = 120; 714 "HIDE_FULLSCREEN", // = 121; 715 "DOM_FOCUS_CHANGED", // = 122; 716 "REPLACE_BASE_CONTENT", // = 123; 717 "FORM_DID_BLUR", // = 124; 718 "RETURN_LABEL", // = 125; 719 "FIND_AGAIN", // = 126; 720 "CENTER_FIT_RECT", // = 127; 721 "REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID", // = 128; 722 "SET_SCROLLBAR_MODES", // = 129; 723 "SELECTION_STRING_CHANGED", // = 130; 724 "SET_TOUCH_HIGHLIGHT_RECTS", // = 131; 725 "SAVE_WEBARCHIVE_FINISHED", // = 132; 726 "SET_AUTOFILLABLE", // = 133; 727 "AUTOFILL_COMPLETE", // = 134; 728 "SELECT_AT", // = 135; 729 "SCREEN_ON", // = 136; 730 "ENTER_FULLSCREEN_VIDEO" // = 137; 731 }; 732 733 // If the site doesn't use the viewport meta tag to specify the viewport, 734 // use DEFAULT_VIEWPORT_WIDTH as the default viewport width 735 static final int DEFAULT_VIEWPORT_WIDTH = 980; 736 737 // normally we try to fit the content to the minimum preferred width 738 // calculated by the Webkit. To avoid the bad behavior when some site's 739 // minimum preferred width keeps growing when changing the viewport width or 740 // the minimum preferred width is huge, an upper limit is needed. 741 static int sMaxViewportWidth = DEFAULT_VIEWPORT_WIDTH; 742 743 // initial scale in percent. 0 means using default. 744 private int mInitialScaleInPercent = 0; 745 746 // Whether or not a scroll event should be sent to webkit. This is only set 747 // to false when restoring the scroll position. 748 private boolean mSendScrollEvent = true; 749 750 private int mSnapScrollMode = SNAP_NONE; 751 private static final int SNAP_NONE = 0; 752 private static final int SNAP_LOCK = 1; // not a separate state 753 private static final int SNAP_X = 2; // may be combined with SNAP_LOCK 754 private static final int SNAP_Y = 4; // may be combined with SNAP_LOCK 755 private boolean mSnapPositive; 756 757 // keep these in sync with their counterparts in WebView.cpp 758 private static final int DRAW_EXTRAS_NONE = 0; 759 private static final int DRAW_EXTRAS_FIND = 1; 760 private static final int DRAW_EXTRAS_SELECTION = 2; 761 private static final int DRAW_EXTRAS_CURSOR_RING = 3; 762 763 // keep this in sync with WebCore:ScrollbarMode in WebKit 764 private static final int SCROLLBAR_AUTO = 0; 765 private static final int SCROLLBAR_ALWAYSOFF = 1; 766 // as we auto fade scrollbar, this is ignored. 767 private static final int SCROLLBAR_ALWAYSON = 2; 768 private int mHorizontalScrollBarMode = SCROLLBAR_AUTO; 769 private int mVerticalScrollBarMode = SCROLLBAR_AUTO; 770 771 // constants for determining script injection strategy 772 private static final int ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED = -1; 773 private static final int ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT = 0; 774 private static final int ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED = 1; 775 776 // the alias via which accessibility JavaScript interface is exposed 777 private static final String ALIAS_ACCESSIBILITY_JS_INTERFACE = "accessibility"; 778 779 // JavaScript to inject the script chooser which will 780 // pick the right script for the current URL 781 private static final String ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT = 782 "javascript:(function() {" + 783 " var chooser = document.createElement('script');" + 784 " chooser.type = 'text/javascript';" + 785 " chooser.src = 'https://ssl.gstatic.com/accessibility/javascript/android/AndroidScriptChooser.user.js';" + 786 " document.getElementsByTagName('head')[0].appendChild(chooser);" + 787 " })();"; 788 789 // Regular expression that matches the "axs" URL parameter. 790 // The value of 0 means the accessibility script is opted out 791 // The value of 1 means the accessibility script is already injected 792 private static final String PATTERN_MATCH_AXS_URL_PARAMETER = "(\\?axs=(0|1))|(&axs=(0|1))"; 793 794 // TextToSpeech instance exposed to JavaScript to the injected screenreader. 795 private TextToSpeech mTextToSpeech; 796 797 // variable to cache the above pattern in case accessibility is enabled. 798 private Pattern mMatchAxsUrlParameterPattern; 799 800 /** 801 * Max distance to overscroll by in pixels. 802 * This how far content can be pulled beyond its normal bounds by the user. 803 */ 804 private int mOverscrollDistance; 805 806 /** 807 * Max distance to overfling by in pixels. 808 * This is how far flinged content can move beyond the end of its normal bounds. 809 */ 810 private int mOverflingDistance; 811 812 private OverScrollGlow mOverScrollGlow; 813 814 // Used to match key downs and key ups 815 private Vector<Integer> mKeysPressed; 816 817 /* package */ static boolean mLogEvent = true; 818 819 // for event log 820 private long mLastTouchUpTime = 0; 821 822 private WebViewCore.AutoFillData mAutoFillData; 823 824 /** 825 * URI scheme for telephone number 826 */ 827 public static final String SCHEME_TEL = "tel:"; 828 /** 829 * URI scheme for email address 830 */ 831 public static final String SCHEME_MAILTO = "mailto:"; 832 /** 833 * URI scheme for map address 834 */ 835 public static final String SCHEME_GEO = "geo:0,0?q="; 836 837 private int mBackgroundColor = Color.WHITE; 838 839 private static final long SELECT_SCROLL_INTERVAL = 1000 / 60; // 60 / second 840 private int mAutoScrollX = 0; 841 private int mAutoScrollY = 0; 842 private int mMinAutoScrollX = 0; 843 private int mMaxAutoScrollX = 0; 844 private int mMinAutoScrollY = 0; 845 private int mMaxAutoScrollY = 0; 846 private Rect mScrollingLayerBounds = new Rect(); 847 private boolean mSentAutoScrollMessage = false; 848 849 // used for serializing asynchronously handled touch events. 850 private final TouchEventQueue mTouchEventQueue = new TouchEventQueue(); 851 852 // Used to notify listeners of a new picture. 853 private PictureListener mPictureListener; 854 /** 855 * Interface to listen for new pictures as they change. 856 * @deprecated This interface is now obsolete. 857 */ 858 @Deprecated 859 public interface PictureListener { 860 /** 861 * Notify the listener that the picture has changed. 862 * @param view The WebView that owns the picture. 863 * @param picture The new picture. 864 * @deprecated This method is now obsolete. 865 */ 866 @Deprecated 867 public void onNewPicture(WebView view, Picture picture); 868 } 869 870 // FIXME: Want to make this public, but need to change the API file. 871 public /*static*/ class HitTestResult { 872 /** 873 * Default HitTestResult, where the target is unknown 874 */ 875 public static final int UNKNOWN_TYPE = 0; 876 /** 877 * HitTestResult for hitting a HTML::a tag 878 */ 879 public static final int ANCHOR_TYPE = 1; 880 /** 881 * HitTestResult for hitting a phone number 882 */ 883 public static final int PHONE_TYPE = 2; 884 /** 885 * HitTestResult for hitting a map address 886 */ 887 public static final int GEO_TYPE = 3; 888 /** 889 * HitTestResult for hitting an email address 890 */ 891 public static final int EMAIL_TYPE = 4; 892 /** 893 * HitTestResult for hitting an HTML::img tag 894 */ 895 public static final int IMAGE_TYPE = 5; 896 /** 897 * HitTestResult for hitting a HTML::a tag which contains HTML::img 898 */ 899 public static final int IMAGE_ANCHOR_TYPE = 6; 900 /** 901 * HitTestResult for hitting a HTML::a tag with src=http 902 */ 903 public static final int SRC_ANCHOR_TYPE = 7; 904 /** 905 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img 906 */ 907 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 908 /** 909 * HitTestResult for hitting an edit text area 910 */ 911 public static final int EDIT_TEXT_TYPE = 9; 912 913 private int mType; 914 private String mExtra; 915 916 HitTestResult() { 917 mType = UNKNOWN_TYPE; 918 } 919 920 private void setType(int type) { 921 mType = type; 922 } 923 924 private void setExtra(String extra) { 925 mExtra = extra; 926 } 927 928 public int getType() { 929 return mType; 930 } 931 932 public String getExtra() { 933 return mExtra; 934 } 935 } 936 937 /** 938 * Construct a new WebView with a Context object. 939 * @param context A Context object used to access application assets. 940 */ 941 public WebView(Context context) { 942 this(context, null); 943 } 944 945 /** 946 * Construct a new WebView with layout parameters. 947 * @param context A Context object used to access application assets. 948 * @param attrs An AttributeSet passed to our parent. 949 */ 950 public WebView(Context context, AttributeSet attrs) { 951 this(context, attrs, com.android.internal.R.attr.webViewStyle); 952 } 953 954 /** 955 * Construct a new WebView with layout parameters and a default style. 956 * @param context A Context object used to access application assets. 957 * @param attrs An AttributeSet passed to our parent. 958 * @param defStyle The default style resource ID. 959 */ 960 public WebView(Context context, AttributeSet attrs, int defStyle) { 961 this(context, attrs, defStyle, false); 962 } 963 964 /** 965 * Construct a new WebView with layout parameters and a default style. 966 * @param context A Context object used to access application assets. 967 * @param attrs An AttributeSet passed to our parent. 968 * @param defStyle The default style resource ID. 969 */ 970 public WebView(Context context, AttributeSet attrs, int defStyle, 971 boolean privateBrowsing) { 972 this(context, attrs, defStyle, null, privateBrowsing); 973 } 974 975 /** 976 * Construct a new WebView with layout parameters, a default style and a set 977 * of custom Javscript interfaces to be added to the WebView at initialization 978 * time. This guarantees that these interfaces will be available when the JS 979 * context is initialized. 980 * @param context A Context object used to access application assets. 981 * @param attrs An AttributeSet passed to our parent. 982 * @param defStyle The default style resource ID. 983 * @param javaScriptInterfaces is a Map of interface names, as keys, and 984 * object implementing those interfaces, as values. 985 * @hide pending API council approval. 986 */ 987 protected WebView(Context context, AttributeSet attrs, int defStyle, 988 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 989 super(context, attrs, defStyle); 990 991 // Used by the chrome stack to find application paths 992 JniUtil.setContext(context); 993 994 mCallbackProxy = new CallbackProxy(context, this); 995 mViewManager = new ViewManager(this); 996 L10nUtils.setApplicationContext(context.getApplicationContext()); 997 mWebViewCore = new WebViewCore(context, this, mCallbackProxy, javaScriptInterfaces); 998 mDatabase = WebViewDatabase.getInstance(context); 999 mScroller = new OverScroller(context, null, 0, 0, false); //TODO Use OverScroller's flywheel 1000 mZoomManager = new ZoomManager(this, mCallbackProxy); 1001 1002 /* The init method must follow the creation of certain member variables, 1003 * such as the mZoomManager. 1004 */ 1005 init(); 1006 setupPackageListener(context); 1007 setupProxyListener(context); 1008 updateMultiTouchSupport(context); 1009 1010 if (privateBrowsing) { 1011 startPrivateBrowsing(); 1012 } 1013 1014 mAutoFillData = new WebViewCore.AutoFillData(); 1015 } 1016 1017 private static class ProxyReceiver extends BroadcastReceiver { 1018 @Override 1019 public void onReceive(Context context, Intent intent) { 1020 if (intent.getAction().equals(Proxy.PROXY_CHANGE_ACTION)) { 1021 handleProxyBroadcast(intent); 1022 } 1023 } 1024 } 1025 1026 /* 1027 * A variable to track if there is a receiver added for PROXY_CHANGE_ACTION 1028 */ 1029 private static boolean sProxyReceiverAdded; 1030 1031 private static synchronized void setupProxyListener(Context context) { 1032 if (sProxyReceiverAdded) { 1033 return; 1034 } 1035 IntentFilter filter = new IntentFilter(); 1036 filter.addAction(Proxy.PROXY_CHANGE_ACTION); 1037 Intent currentProxy = context.getApplicationContext().registerReceiver( 1038 new ProxyReceiver(), filter); 1039 sProxyReceiverAdded = true; 1040 if (currentProxy != null) { 1041 handleProxyBroadcast(currentProxy); 1042 } 1043 } 1044 1045 private static void handleProxyBroadcast(Intent intent) { 1046 ProxyProperties proxyProperties = (ProxyProperties)intent.getExtra(Proxy.EXTRA_PROXY_INFO); 1047 if (proxyProperties == null || proxyProperties.getHost() == null) { 1048 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, ""); 1049 return; 1050 } 1051 1052 String host = proxyProperties.getHost(); 1053 int port = proxyProperties.getPort(); 1054 if (port != 0) 1055 host += ":" + port; 1056 1057 // TODO: Handle exclusion list 1058 // The plan is to make an AndroidProxyResolver, and handle the blacklist 1059 // there 1060 String exclusionList = proxyProperties.getExclusionList(); 1061 WebViewCore.sendStaticMessage(EventHub.PROXY_CHANGED, host); 1062 } 1063 1064 /* 1065 * A variable to track if there is a receiver added for ACTION_PACKAGE_ADDED 1066 * or ACTION_PACKAGE_REMOVED. 1067 */ 1068 private static boolean sPackageInstallationReceiverAdded = false; 1069 1070 /* 1071 * A set of Google packages we monitor for the 1072 * navigator.isApplicationInstalled() API. Add additional packages as 1073 * needed. 1074 */ 1075 private static Set<String> sGoogleApps; 1076 static { 1077 sGoogleApps = new HashSet<String>(); 1078 sGoogleApps.add("com.google.android.youtube"); 1079 } 1080 1081 private static class PackageListener extends BroadcastReceiver { 1082 @Override 1083 public void onReceive(Context context, Intent intent) { 1084 final String action = intent.getAction(); 1085 final String packageName = intent.getData().getSchemeSpecificPart(); 1086 final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false); 1087 if (Intent.ACTION_PACKAGE_REMOVED.equals(action) && replacing) { 1088 // if it is replacing, refreshPlugins() when adding 1089 return; 1090 } 1091 1092 if (sGoogleApps.contains(packageName)) { 1093 if (Intent.ACTION_PACKAGE_ADDED.equals(action)) { 1094 WebViewCore.sendStaticMessage(EventHub.ADD_PACKAGE_NAME, packageName); 1095 } else { 1096 WebViewCore.sendStaticMessage(EventHub.REMOVE_PACKAGE_NAME, packageName); 1097 } 1098 } 1099 1100 PluginManager pm = PluginManager.getInstance(context); 1101 if (pm.containsPluginPermissionAndSignatures(packageName)) { 1102 pm.refreshPlugins(Intent.ACTION_PACKAGE_ADDED.equals(action)); 1103 } 1104 } 1105 } 1106 1107 private void setupPackageListener(Context context) { 1108 1109 /* 1110 * we must synchronize the instance check and the creation of the 1111 * receiver to ensure that only ONE receiver exists for all WebView 1112 * instances. 1113 */ 1114 synchronized (WebView.class) { 1115 1116 // if the receiver already exists then we do not need to register it 1117 // again 1118 if (sPackageInstallationReceiverAdded) { 1119 return; 1120 } 1121 1122 IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED); 1123 filter.addAction(Intent.ACTION_PACKAGE_REMOVED); 1124 filter.addDataScheme("package"); 1125 BroadcastReceiver packageListener = new PackageListener(); 1126 context.getApplicationContext().registerReceiver(packageListener, filter); 1127 sPackageInstallationReceiverAdded = true; 1128 } 1129 1130 // check if any of the monitored apps are already installed 1131 AsyncTask<Void, Void, Set<String>> task = new AsyncTask<Void, Void, Set<String>>() { 1132 1133 @Override 1134 protected Set<String> doInBackground(Void... unused) { 1135 Set<String> installedPackages = new HashSet<String>(); 1136 PackageManager pm = mContext.getPackageManager(); 1137 for (String name : sGoogleApps) { 1138 try { 1139 PackageInfo pInfo = pm.getPackageInfo(name, 1140 PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES); 1141 installedPackages.add(name); 1142 } catch(PackageManager.NameNotFoundException e) { 1143 // package not found 1144 } 1145 } 1146 return installedPackages; 1147 } 1148 1149 // Executes on the UI thread 1150 @Override 1151 protected void onPostExecute(Set<String> installedPackages) { 1152 if (mWebViewCore != null) { 1153 mWebViewCore.sendMessage(EventHub.ADD_PACKAGE_NAMES, installedPackages); 1154 } 1155 } 1156 }; 1157 task.execute(); 1158 } 1159 1160 void updateMultiTouchSupport(Context context) { 1161 mZoomManager.updateMultiTouchSupport(context); 1162 } 1163 1164 private void init() { 1165 setWillNotDraw(false); 1166 setFocusable(true); 1167 setFocusableInTouchMode(true); 1168 setClickable(true); 1169 setLongClickable(true); 1170 1171 final ViewConfiguration configuration = ViewConfiguration.get(getContext()); 1172 int slop = configuration.getScaledTouchSlop(); 1173 mTouchSlopSquare = slop * slop; 1174 mMinLockSnapReverseDistance = slop; 1175 slop = configuration.getScaledDoubleTapSlop(); 1176 mDoubleTapSlopSquare = slop * slop; 1177 final float density = getContext().getResources().getDisplayMetrics().density; 1178 // use one line height, 16 based on our current default font, for how 1179 // far we allow a touch be away from the edge of a link 1180 mNavSlop = (int) (16 * density); 1181 mZoomManager.init(density); 1182 mMaximumFling = configuration.getScaledMaximumFlingVelocity(); 1183 1184 // Compute the inverse of the density squared. 1185 DRAG_LAYER_INVERSE_DENSITY_SQUARED = 1 / (density * density); 1186 1187 mOverscrollDistance = configuration.getScaledOverscrollDistance(); 1188 mOverflingDistance = configuration.getScaledOverflingDistance(); 1189 1190 setScrollBarStyle(super.getScrollBarStyle()); 1191 // Initially use a size of two, since the user is likely to only hold 1192 // down two keys at a time (shift + another key) 1193 mKeysPressed = new Vector<Integer>(2); 1194 mHTML5VideoViewProxy = null ; 1195 } 1196 1197 /** 1198 * Adds accessibility APIs to JavaScript. 1199 * 1200 * Note: This method is responsible to performing the necessary 1201 * check if the accessibility APIs should be exposed. 1202 */ 1203 private void addAccessibilityApisToJavaScript() { 1204 if (AccessibilityManager.getInstance(mContext).isEnabled() 1205 && getSettings().getJavaScriptEnabled()) { 1206 // exposing the TTS for now ... 1207 mTextToSpeech = new TextToSpeech(getContext(), null); 1208 addJavascriptInterface(mTextToSpeech, ALIAS_ACCESSIBILITY_JS_INTERFACE); 1209 } 1210 } 1211 1212 /** 1213 * Removes accessibility APIs from JavaScript. 1214 */ 1215 private void removeAccessibilityApisFromJavaScript() { 1216 // exposing the TTS for now ... 1217 if (mTextToSpeech != null) { 1218 removeJavascriptInterface(ALIAS_ACCESSIBILITY_JS_INTERFACE); 1219 mTextToSpeech.shutdown(); 1220 mTextToSpeech = null; 1221 } 1222 } 1223 1224 @Override 1225 public void setOverScrollMode(int mode) { 1226 super.setOverScrollMode(mode); 1227 if (mode != OVER_SCROLL_NEVER) { 1228 if (mOverScrollGlow == null) { 1229 mOverScrollGlow = new OverScrollGlow(this); 1230 } 1231 } else { 1232 mOverScrollGlow = null; 1233 } 1234 } 1235 1236 /* package */void updateDefaultZoomDensity(int zoomDensity) { 1237 final float density = mContext.getResources().getDisplayMetrics().density 1238 * 100 / zoomDensity; 1239 mNavSlop = (int) (16 * density); 1240 mZoomManager.updateDefaultZoomDensity(density); 1241 } 1242 1243 /* package */ boolean onSavePassword(String schemePlusHost, String username, 1244 String password, final Message resumeMsg) { 1245 boolean rVal = false; 1246 if (resumeMsg == null) { 1247 // null resumeMsg implies saving password silently 1248 mDatabase.setUsernamePassword(schemePlusHost, username, password); 1249 } else { 1250 final Message remember = mPrivateHandler.obtainMessage( 1251 REMEMBER_PASSWORD); 1252 remember.getData().putString("host", schemePlusHost); 1253 remember.getData().putString("username", username); 1254 remember.getData().putString("password", password); 1255 remember.obj = resumeMsg; 1256 1257 final Message neverRemember = mPrivateHandler.obtainMessage( 1258 NEVER_REMEMBER_PASSWORD); 1259 neverRemember.getData().putString("host", schemePlusHost); 1260 neverRemember.getData().putString("username", username); 1261 neverRemember.getData().putString("password", password); 1262 neverRemember.obj = resumeMsg; 1263 1264 new AlertDialog.Builder(getContext()) 1265 .setTitle(com.android.internal.R.string.save_password_label) 1266 .setMessage(com.android.internal.R.string.save_password_message) 1267 .setPositiveButton(com.android.internal.R.string.save_password_notnow, 1268 new DialogInterface.OnClickListener() { 1269 public void onClick(DialogInterface dialog, int which) { 1270 resumeMsg.sendToTarget(); 1271 } 1272 }) 1273 .setNeutralButton(com.android.internal.R.string.save_password_remember, 1274 new DialogInterface.OnClickListener() { 1275 public void onClick(DialogInterface dialog, int which) { 1276 remember.sendToTarget(); 1277 } 1278 }) 1279 .setNegativeButton(com.android.internal.R.string.save_password_never, 1280 new DialogInterface.OnClickListener() { 1281 public void onClick(DialogInterface dialog, int which) { 1282 neverRemember.sendToTarget(); 1283 } 1284 }) 1285 .setOnCancelListener(new OnCancelListener() { 1286 public void onCancel(DialogInterface dialog) { 1287 resumeMsg.sendToTarget(); 1288 } 1289 }).show(); 1290 // Return true so that WebViewCore will pause while the dialog is 1291 // up. 1292 rVal = true; 1293 } 1294 return rVal; 1295 } 1296 1297 @Override 1298 public void setScrollBarStyle(int style) { 1299 if (style == View.SCROLLBARS_INSIDE_INSET 1300 || style == View.SCROLLBARS_OUTSIDE_INSET) { 1301 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = false; 1302 } else { 1303 mOverlayHorizontalScrollbar = mOverlayVerticalScrollbar = true; 1304 } 1305 super.setScrollBarStyle(style); 1306 } 1307 1308 /** 1309 * Specify whether the horizontal scrollbar has overlay style. 1310 * @param overlay TRUE if horizontal scrollbar should have overlay style. 1311 */ 1312 public void setHorizontalScrollbarOverlay(boolean overlay) { 1313 mOverlayHorizontalScrollbar = overlay; 1314 } 1315 1316 /** 1317 * Specify whether the vertical scrollbar has overlay style. 1318 * @param overlay TRUE if vertical scrollbar should have overlay style. 1319 */ 1320 public void setVerticalScrollbarOverlay(boolean overlay) { 1321 mOverlayVerticalScrollbar = overlay; 1322 } 1323 1324 /** 1325 * Return whether horizontal scrollbar has overlay style 1326 * @return TRUE if horizontal scrollbar has overlay style. 1327 */ 1328 public boolean overlayHorizontalScrollbar() { 1329 return mOverlayHorizontalScrollbar; 1330 } 1331 1332 /** 1333 * Return whether vertical scrollbar has overlay style 1334 * @return TRUE if vertical scrollbar has overlay style. 1335 */ 1336 public boolean overlayVerticalScrollbar() { 1337 return mOverlayVerticalScrollbar; 1338 } 1339 1340 /* 1341 * Return the width of the view where the content of WebView should render 1342 * to. 1343 * Note: this can be called from WebCoreThread. 1344 */ 1345 /* package */ int getViewWidth() { 1346 if (!isVerticalScrollBarEnabled() || mOverlayVerticalScrollbar) { 1347 return getWidth(); 1348 } else { 1349 return Math.max(0, getWidth() - getVerticalScrollbarWidth()); 1350 } 1351 } 1352 1353 /** 1354 * returns the height of the titlebarview (if any). Does not care about 1355 * scrolling 1356 * @hide 1357 */ 1358 protected int getTitleHeight() { 1359 return mTitleBar != null ? mTitleBar.getHeight() : 0; 1360 } 1361 1362 /** 1363 * Return the amount of the titlebarview (if any) that is visible 1364 * 1365 * @deprecated This method is now obsolete. 1366 */ 1367 public int getVisibleTitleHeight() { 1368 // need to restrict mScrollY due to over scroll 1369 return Math.max(getTitleHeight() - Math.max(0, mScrollY), 0); 1370 } 1371 1372 /* 1373 * Return the height of the view where the content of WebView should render 1374 * to. Note that this excludes mTitleBar, if there is one. 1375 * Note: this can be called from WebCoreThread. 1376 */ 1377 /* package */ int getViewHeight() { 1378 return getViewHeightWithTitle() - getVisibleTitleHeight(); 1379 } 1380 1381 private int getViewHeightWithTitle() { 1382 int height = getHeight(); 1383 if (isHorizontalScrollBarEnabled() && !mOverlayHorizontalScrollbar) { 1384 height -= getHorizontalScrollbarHeight(); 1385 } 1386 return height; 1387 } 1388 1389 /** 1390 * @return The SSL certificate for the main top-level page or null if 1391 * there is no certificate (the site is not secure). 1392 */ 1393 public SslCertificate getCertificate() { 1394 return mCertificate; 1395 } 1396 1397 /** 1398 * Sets the SSL certificate for the main top-level page. 1399 */ 1400 public void setCertificate(SslCertificate certificate) { 1401 if (DebugFlags.WEB_VIEW) { 1402 Log.v(LOGTAG, "setCertificate=" + certificate); 1403 } 1404 // here, the certificate can be null (if the site is not secure) 1405 mCertificate = certificate; 1406 } 1407 1408 //------------------------------------------------------------------------- 1409 // Methods called by activity 1410 //------------------------------------------------------------------------- 1411 1412 /** 1413 * Save the username and password for a particular host in the WebView's 1414 * internal database. 1415 * @param host The host that required the credentials. 1416 * @param username The username for the given host. 1417 * @param password The password for the given host. 1418 */ 1419 public void savePassword(String host, String username, String password) { 1420 mDatabase.setUsernamePassword(host, username, password); 1421 } 1422 1423 /** 1424 * Set the HTTP authentication credentials for a given host and realm. 1425 * 1426 * @param host The host for the credentials. 1427 * @param realm The realm for the credentials. 1428 * @param username The username for the password. If it is null, it means 1429 * password can't be saved. 1430 * @param password The password 1431 */ 1432 public void setHttpAuthUsernamePassword(String host, String realm, 1433 String username, String password) { 1434 mDatabase.setHttpAuthUsernamePassword(host, realm, username, password); 1435 } 1436 1437 /** 1438 * Retrieve the HTTP authentication username and password for a given 1439 * host & realm pair 1440 * 1441 * @param host The host for which the credentials apply. 1442 * @param realm The realm for which the credentials apply. 1443 * @return String[] if found, String[0] is username, which can be null and 1444 * String[1] is password. Return null if it can't find anything. 1445 */ 1446 public String[] getHttpAuthUsernamePassword(String host, String realm) { 1447 return mDatabase.getHttpAuthUsernamePassword(host, realm); 1448 } 1449 1450 /** 1451 * Remove Find or Select ActionModes, if active. 1452 */ 1453 private void clearActionModes() { 1454 if (mSelectCallback != null) { 1455 mSelectCallback.finish(); 1456 } 1457 if (mFindCallback != null) { 1458 mFindCallback.finish(); 1459 } 1460 } 1461 1462 /** 1463 * Called to clear state when moving from one page to another, or changing 1464 * in some other way that makes elements associated with the current page 1465 * (such as WebTextView or ActionModes) no longer relevant. 1466 */ 1467 private void clearHelpers() { 1468 clearTextEntry(); 1469 clearActionModes(); 1470 dismissFullScreenMode(); 1471 } 1472 1473 /** 1474 * Destroy the internal state of the WebView. This method should be called 1475 * after the WebView has been removed from the view system. No other 1476 * methods may be called on a WebView after destroy. 1477 */ 1478 public void destroy() { 1479 clearHelpers(); 1480 if (mListBoxDialog != null) { 1481 mListBoxDialog.dismiss(); 1482 mListBoxDialog = null; 1483 } 1484 if (mNativeClass != 0) nativeStopGL(); 1485 if (mWebViewCore != null) { 1486 // Set the handlers to null before destroying WebViewCore so no 1487 // more messages will be posted. 1488 mCallbackProxy.setWebViewClient(null); 1489 mCallbackProxy.setWebChromeClient(null); 1490 // Tell WebViewCore to destroy itself 1491 synchronized (this) { 1492 WebViewCore webViewCore = mWebViewCore; 1493 mWebViewCore = null; // prevent using partial webViewCore 1494 webViewCore.destroy(); 1495 } 1496 // Remove any pending messages that might not be serviced yet. 1497 mPrivateHandler.removeCallbacksAndMessages(null); 1498 mCallbackProxy.removeCallbacksAndMessages(null); 1499 // Wake up the WebCore thread just in case it is waiting for a 1500 // JavaScript dialog. 1501 synchronized (mCallbackProxy) { 1502 mCallbackProxy.notify(); 1503 } 1504 } 1505 if (mNativeClass != 0) { 1506 nativeDestroy(); 1507 mNativeClass = 0; 1508 } 1509 } 1510 1511 /** 1512 * Enables platform notifications of data state and proxy changes. 1513 * @deprecated Obsolete - platform notifications are always enabled. 1514 */ 1515 @Deprecated 1516 public static void enablePlatformNotifications() { 1517 Network.enablePlatformNotifications(); 1518 } 1519 1520 /** 1521 * If platform notifications are enabled, this should be called 1522 * from the Activity's onPause() or onStop(). 1523 * @deprecated Obsolete - platform notifications are always enabled. 1524 */ 1525 @Deprecated 1526 public static void disablePlatformNotifications() { 1527 Network.disablePlatformNotifications(); 1528 } 1529 1530 /** 1531 * Sets JavaScript engine flags. 1532 * 1533 * @param flags JS engine flags in a String 1534 * 1535 * @hide pending API solidification 1536 */ 1537 public void setJsFlags(String flags) { 1538 mWebViewCore.sendMessage(EventHub.SET_JS_FLAGS, flags); 1539 } 1540 1541 /** 1542 * Inform WebView of the network state. This is used to set 1543 * the JavaScript property window.navigator.isOnline and 1544 * generates the online/offline event as specified in HTML5, sec. 5.7.7 1545 * @param networkUp boolean indicating if network is available 1546 */ 1547 public void setNetworkAvailable(boolean networkUp) { 1548 mWebViewCore.sendMessage(EventHub.SET_NETWORK_STATE, 1549 networkUp ? 1 : 0, 0); 1550 } 1551 1552 /** 1553 * Inform WebView about the current network type. 1554 * {@hide} 1555 */ 1556 public void setNetworkType(String type, String subtype) { 1557 Map<String, String> map = new HashMap<String, String>(); 1558 map.put("type", type); 1559 map.put("subtype", subtype); 1560 mWebViewCore.sendMessage(EventHub.SET_NETWORK_TYPE, map); 1561 } 1562 /** 1563 * Save the state of this WebView used in 1564 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 1565 * method no longer stores the display data for this WebView. The previous 1566 * behavior could potentially leak files if {@link #restoreState} was never 1567 * called. See {@link #savePicture} and {@link #restorePicture} for saving 1568 * and restoring the display data. 1569 * @param outState The Bundle to store the WebView state. 1570 * @return The same copy of the back/forward list used to save the state. If 1571 * saveState fails, the returned list will be null. 1572 * @see #savePicture 1573 * @see #restorePicture 1574 */ 1575 public WebBackForwardList saveState(Bundle outState) { 1576 if (outState == null) { 1577 return null; 1578 } 1579 // We grab a copy of the back/forward list because a client of WebView 1580 // may have invalidated the history list by calling clearHistory. 1581 WebBackForwardList list = copyBackForwardList(); 1582 final int currentIndex = list.getCurrentIndex(); 1583 final int size = list.getSize(); 1584 // We should fail saving the state if the list is empty or the index is 1585 // not in a valid range. 1586 if (currentIndex < 0 || currentIndex >= size || size == 0) { 1587 return null; 1588 } 1589 outState.putInt("index", currentIndex); 1590 // FIXME: This should just be a byte[][] instead of ArrayList but 1591 // Parcel.java does not have the code to handle multi-dimensional 1592 // arrays. 1593 ArrayList<byte[]> history = new ArrayList<byte[]>(size); 1594 for (int i = 0; i < size; i++) { 1595 WebHistoryItem item = list.getItemAtIndex(i); 1596 if (null == item) { 1597 // FIXME: this shouldn't happen 1598 // need to determine how item got set to null 1599 Log.w(LOGTAG, "saveState: Unexpected null history item."); 1600 return null; 1601 } 1602 byte[] data = item.getFlattenedData(); 1603 if (data == null) { 1604 // It would be very odd to not have any data for a given history 1605 // item. And we will fail to rebuild the history list without 1606 // flattened data. 1607 return null; 1608 } 1609 history.add(data); 1610 } 1611 outState.putSerializable("history", history); 1612 if (mCertificate != null) { 1613 outState.putBundle("certificate", 1614 SslCertificate.saveState(mCertificate)); 1615 } 1616 outState.putBoolean("privateBrowsingEnabled", isPrivateBrowsingEnabled()); 1617 mZoomManager.saveZoomState(outState); 1618 return list; 1619 } 1620 1621 /** 1622 * Save the current display data to the Bundle given. Used in conjunction 1623 * with {@link #saveState}. 1624 * @param b A Bundle to store the display data. 1625 * @param dest The file to store the serialized picture data. Will be 1626 * overwritten with this WebView's picture data. 1627 * @return True if the picture was successfully saved. 1628 * @deprecated This method is now obsolete. 1629 */ 1630 @Deprecated 1631 public boolean savePicture(Bundle b, final File dest) { 1632 if (dest == null || b == null) { 1633 return false; 1634 } 1635 final Picture p = capturePicture(); 1636 // Use a temporary file while writing to ensure the destination file 1637 // contains valid data. 1638 final File temp = new File(dest.getPath() + ".writing"); 1639 new Thread(new Runnable() { 1640 public void run() { 1641 FileOutputStream out = null; 1642 try { 1643 out = new FileOutputStream(temp); 1644 p.writeToStream(out); 1645 // Writing the picture succeeded, rename the temporary file 1646 // to the destination. 1647 temp.renameTo(dest); 1648 } catch (Exception e) { 1649 // too late to do anything about it. 1650 } finally { 1651 if (out != null) { 1652 try { 1653 out.close(); 1654 } catch (Exception e) { 1655 // Can't do anything about that 1656 } 1657 } 1658 temp.delete(); 1659 } 1660 } 1661 }).start(); 1662 // now update the bundle 1663 b.putInt("scrollX", mScrollX); 1664 b.putInt("scrollY", mScrollY); 1665 mZoomManager.saveZoomState(b); 1666 return true; 1667 } 1668 1669 private void restoreHistoryPictureFields(Picture p, Bundle b) { 1670 int sx = b.getInt("scrollX", 0); 1671 int sy = b.getInt("scrollY", 0); 1672 1673 mDrawHistory = true; 1674 mHistoryPicture = p; 1675 mScrollX = sx; 1676 mScrollY = sy; 1677 mZoomManager.restoreZoomState(b); 1678 final float scale = mZoomManager.getScale(); 1679 mHistoryWidth = Math.round(p.getWidth() * scale); 1680 mHistoryHeight = Math.round(p.getHeight() * scale); 1681 1682 invalidate(); 1683 } 1684 1685 /** 1686 * Restore the display data that was save in {@link #savePicture}. Used in 1687 * conjunction with {@link #restoreState}. 1688 * @param b A Bundle containing the saved display data. 1689 * @param src The file where the picture data was stored. 1690 * @return True if the picture was successfully restored. 1691 * @deprecated This method is now obsolete. 1692 */ 1693 @Deprecated 1694 public boolean restorePicture(Bundle b, File src) { 1695 if (src == null || b == null) { 1696 return false; 1697 } 1698 if (!src.exists()) { 1699 return false; 1700 } 1701 try { 1702 final FileInputStream in = new FileInputStream(src); 1703 final Bundle copy = new Bundle(b); 1704 new Thread(new Runnable() { 1705 public void run() { 1706 try { 1707 final Picture p = Picture.createFromStream(in); 1708 if (p != null) { 1709 // Post a runnable on the main thread to update the 1710 // history picture fields. 1711 mPrivateHandler.post(new Runnable() { 1712 public void run() { 1713 restoreHistoryPictureFields(p, copy); 1714 } 1715 }); 1716 } 1717 } finally { 1718 try { 1719 in.close(); 1720 } catch (Exception e) { 1721 // Nothing we can do now. 1722 } 1723 } 1724 } 1725 }).start(); 1726 } catch (FileNotFoundException e){ 1727 e.printStackTrace(); 1728 } 1729 return true; 1730 } 1731 1732 /** 1733 * Restore the state of this WebView from the given map used in 1734 * {@link android.app.Activity#onRestoreInstanceState}. This method should 1735 * be called to restore the state of the WebView before using the object. If 1736 * it is called after the WebView has had a chance to build state (load 1737 * pages, create a back/forward list, etc.) there may be undesirable 1738 * side-effects. Please note that this method no longer restores the 1739 * display data for this WebView. See {@link #savePicture} and {@link 1740 * #restorePicture} for saving and restoring the display data. 1741 * @param inState The incoming Bundle of state. 1742 * @return The restored back/forward list or null if restoreState failed. 1743 * @see #savePicture 1744 * @see #restorePicture 1745 */ 1746 public WebBackForwardList restoreState(Bundle inState) { 1747 WebBackForwardList returnList = null; 1748 if (inState == null) { 1749 return returnList; 1750 } 1751 if (inState.containsKey("index") && inState.containsKey("history")) { 1752 mCertificate = SslCertificate.restoreState( 1753 inState.getBundle("certificate")); 1754 1755 final WebBackForwardList list = mCallbackProxy.getBackForwardList(); 1756 final int index = inState.getInt("index"); 1757 // We can't use a clone of the list because we need to modify the 1758 // shared copy, so synchronize instead to prevent concurrent 1759 // modifications. 1760 synchronized (list) { 1761 final List<byte[]> history = 1762 (List<byte[]>) inState.getSerializable("history"); 1763 final int size = history.size(); 1764 // Check the index bounds so we don't crash in native code while 1765 // restoring the history index. 1766 if (index < 0 || index >= size) { 1767 return null; 1768 } 1769 for (int i = 0; i < size; i++) { 1770 byte[] data = history.remove(0); 1771 if (data == null) { 1772 // If we somehow have null data, we cannot reconstruct 1773 // the item and thus our history list cannot be rebuilt. 1774 return null; 1775 } 1776 WebHistoryItem item = new WebHistoryItem(data); 1777 list.addHistoryItem(item); 1778 } 1779 // Grab the most recent copy to return to the caller. 1780 returnList = copyBackForwardList(); 1781 // Update the copy to have the correct index. 1782 returnList.setCurrentIndex(index); 1783 } 1784 // Restore private browsing setting. 1785 if (inState.getBoolean("privateBrowsingEnabled")) { 1786 getSettings().setPrivateBrowsingEnabled(true); 1787 } 1788 mZoomManager.restoreZoomState(inState); 1789 // Remove all pending messages because we are restoring previous 1790 // state. 1791 mWebViewCore.removeMessages(); 1792 // Send a restore state message. 1793 mWebViewCore.sendMessage(EventHub.RESTORE_STATE, index); 1794 } 1795 return returnList; 1796 } 1797 1798 /** 1799 * Load the given url with the extra headers. 1800 * @param url The url of the resource to load. 1801 * @param extraHeaders The extra headers sent with this url. This should not 1802 * include the common headers like "user-agent". If it does, it 1803 * will be replaced by the intrinsic value of the WebView. 1804 */ 1805 public void loadUrl(String url, Map<String, String> extraHeaders) { 1806 switchOutDrawHistory(); 1807 WebViewCore.GetUrlData arg = new WebViewCore.GetUrlData(); 1808 arg.mUrl = url; 1809 arg.mExtraHeaders = extraHeaders; 1810 mWebViewCore.sendMessage(EventHub.LOAD_URL, arg); 1811 clearHelpers(); 1812 } 1813 1814 /** 1815 * Load the given url. 1816 * @param url The url of the resource to load. 1817 */ 1818 public void loadUrl(String url) { 1819 if (url == null) { 1820 return; 1821 } 1822 loadUrl(url, null); 1823 } 1824 1825 /** 1826 * Load the url with postData using "POST" method into the WebView. If url 1827 * is not a network url, it will be loaded with {link 1828 * {@link #loadUrl(String)} instead. 1829 * 1830 * @param url The url of the resource to load. 1831 * @param postData The data will be passed to "POST" request. 1832 */ 1833 public void postUrl(String url, byte[] postData) { 1834 if (URLUtil.isNetworkUrl(url)) { 1835 switchOutDrawHistory(); 1836 WebViewCore.PostUrlData arg = new WebViewCore.PostUrlData(); 1837 arg.mUrl = url; 1838 arg.mPostData = postData; 1839 mWebViewCore.sendMessage(EventHub.POST_URL, arg); 1840 clearHelpers(); 1841 } else { 1842 loadUrl(url); 1843 } 1844 } 1845 1846 /** 1847 * Load the given data into the WebView. This will load the data into 1848 * WebView using the data: scheme. Content loaded through this mechanism 1849 * does not have the ability to load content from the network. 1850 * @param data A String of data in the given encoding. The date must 1851 * be URI-escaped -- '#', '%', '\', '?' should be replaced by %23, %25, 1852 * %27, %3f respectively. 1853 * @param mimeType The MIMEType of the data. i.e. text/html, image/jpeg 1854 * @param encoding The encoding of the data. i.e. utf-8, base64 1855 */ 1856 public void loadData(String data, String mimeType, String encoding) { 1857 loadUrl("data:" + mimeType + ";" + encoding + "," + data); 1858 } 1859 1860 /** 1861 * Load the given data into the WebView, use the provided URL as the base 1862 * URL for the content. The base URL is the URL that represents the page 1863 * that is loaded through this interface. As such, it is used to resolve any 1864 * relative URLs. The historyUrl is used for the history entry. 1865 * <p> 1866 * Note for post 1.0. Due to the change in the WebKit, the access to asset 1867 * files through "file:///android_asset/" for the sub resources is more 1868 * restricted. If you provide null or empty string as baseUrl, you won't be 1869 * able to access asset files. If the baseUrl is anything other than 1870 * http(s)/ftp(s)/about/javascript as scheme, you can access asset files for 1871 * sub resources. 1872 * 1873 * @param baseUrl Url to resolve relative paths with, if null defaults to 1874 * "about:blank" 1875 * @param data A String of data in the given encoding. 1876 * @param mimeType The MIMEType of the data. i.e. text/html. If null, 1877 * defaults to "text/html" 1878 * @param encoding The encoding of the data. i.e. utf-8, us-ascii 1879 * @param historyUrl URL to use as the history entry. Can be null. 1880 */ 1881 public void loadDataWithBaseURL(String baseUrl, String data, 1882 String mimeType, String encoding, String historyUrl) { 1883 1884 if (baseUrl != null && baseUrl.toLowerCase().startsWith("data:")) { 1885 loadData(data, mimeType, encoding); 1886 return; 1887 } 1888 switchOutDrawHistory(); 1889 WebViewCore.BaseUrlData arg = new WebViewCore.BaseUrlData(); 1890 arg.mBaseUrl = baseUrl; 1891 arg.mData = data; 1892 arg.mMimeType = mimeType; 1893 arg.mEncoding = encoding; 1894 arg.mHistoryUrl = historyUrl; 1895 mWebViewCore.sendMessage(EventHub.LOAD_DATA, arg); 1896 clearHelpers(); 1897 } 1898 1899 /** 1900 * Saves the current view as a web archive. 1901 * 1902 * @param filename The filename where the archive should be placed. 1903 */ 1904 public void saveWebArchive(String filename) { 1905 saveWebArchive(filename, false, null); 1906 } 1907 1908 /* package */ static class SaveWebArchiveMessage { 1909 SaveWebArchiveMessage (String basename, boolean autoname, ValueCallback<String> callback) { 1910 mBasename = basename; 1911 mAutoname = autoname; 1912 mCallback = callback; 1913 } 1914 1915 /* package */ final String mBasename; 1916 /* package */ final boolean mAutoname; 1917 /* package */ final ValueCallback<String> mCallback; 1918 /* package */ String mResultFile; 1919 } 1920 1921 /** 1922 * Saves the current view as a web archive. 1923 * 1924 * @param basename The filename where the archive should be placed. 1925 * @param autoname If false, takes basename to be a file. If true, basename 1926 * is assumed to be a directory in which a filename will be 1927 * chosen according to the url of the current page. 1928 * @param callback Called after the web archive has been saved. The 1929 * parameter for onReceiveValue will either be the filename 1930 * under which the file was saved, or null if saving the 1931 * file failed. 1932 */ 1933 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1934 mWebViewCore.sendMessage(EventHub.SAVE_WEBARCHIVE, 1935 new SaveWebArchiveMessage(basename, autoname, callback)); 1936 } 1937 1938 /** 1939 * Stop the current load. 1940 */ 1941 public void stopLoading() { 1942 // TODO: should we clear all the messages in the queue before sending 1943 // STOP_LOADING? 1944 switchOutDrawHistory(); 1945 mWebViewCore.sendMessage(EventHub.STOP_LOADING); 1946 } 1947 1948 /** 1949 * Reload the current url. 1950 */ 1951 public void reload() { 1952 clearHelpers(); 1953 switchOutDrawHistory(); 1954 mWebViewCore.sendMessage(EventHub.RELOAD); 1955 } 1956 1957 /** 1958 * Return true if this WebView has a back history item. 1959 * @return True iff this WebView has a back history item. 1960 */ 1961 public boolean canGoBack() { 1962 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1963 synchronized (l) { 1964 if (l.getClearPending()) { 1965 return false; 1966 } else { 1967 return l.getCurrentIndex() > 0; 1968 } 1969 } 1970 } 1971 1972 /** 1973 * Go back in the history of this WebView. 1974 */ 1975 public void goBack() { 1976 goBackOrForward(-1); 1977 } 1978 1979 /** 1980 * Return true if this WebView has a forward history item. 1981 * @return True iff this Webview has a forward history item. 1982 */ 1983 public boolean canGoForward() { 1984 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 1985 synchronized (l) { 1986 if (l.getClearPending()) { 1987 return false; 1988 } else { 1989 return l.getCurrentIndex() < l.getSize() - 1; 1990 } 1991 } 1992 } 1993 1994 /** 1995 * Go forward in the history of this WebView. 1996 */ 1997 public void goForward() { 1998 goBackOrForward(1); 1999 } 2000 2001 /** 2002 * Return true if the page can go back or forward the given 2003 * number of steps. 2004 * @param steps The negative or positive number of steps to move the 2005 * history. 2006 */ 2007 public boolean canGoBackOrForward(int steps) { 2008 WebBackForwardList l = mCallbackProxy.getBackForwardList(); 2009 synchronized (l) { 2010 if (l.getClearPending()) { 2011 return false; 2012 } else { 2013 int newIndex = l.getCurrentIndex() + steps; 2014 return newIndex >= 0 && newIndex < l.getSize(); 2015 } 2016 } 2017 } 2018 2019 /** 2020 * Go to the history item that is the number of steps away from 2021 * the current item. Steps is negative if backward and positive 2022 * if forward. 2023 * @param steps The number of steps to take back or forward in the back 2024 * forward list. 2025 */ 2026 public void goBackOrForward(int steps) { 2027 goBackOrForward(steps, false); 2028 } 2029 2030 private void goBackOrForward(int steps, boolean ignoreSnapshot) { 2031 if (steps != 0) { 2032 clearHelpers(); 2033 mWebViewCore.sendMessage(EventHub.GO_BACK_FORWARD, steps, 2034 ignoreSnapshot ? 1 : 0); 2035 } 2036 } 2037 2038 /** 2039 * Returns true if private browsing is enabled in this WebView. 2040 */ 2041 public boolean isPrivateBrowsingEnabled() { 2042 return getSettings().isPrivateBrowsingEnabled(); 2043 } 2044 2045 private void startPrivateBrowsing() { 2046 getSettings().setPrivateBrowsingEnabled(true); 2047 } 2048 2049 private boolean extendScroll(int y) { 2050 int finalY = mScroller.getFinalY(); 2051 int newY = pinLocY(finalY + y); 2052 if (newY == finalY) return false; 2053 mScroller.setFinalY(newY); 2054 mScroller.extendDuration(computeDuration(0, y)); 2055 return true; 2056 } 2057 2058 /** 2059 * Scroll the contents of the view up by half the view size 2060 * @param top true to jump to the top of the page 2061 * @return true if the page was scrolled 2062 */ 2063 public boolean pageUp(boolean top) { 2064 if (mNativeClass == 0) { 2065 return false; 2066 } 2067 nativeClearCursor(); // start next trackball movement from page edge 2068 if (top) { 2069 // go to the top of the document 2070 return pinScrollTo(mScrollX, 0, true, 0); 2071 } 2072 // Page up 2073 int h = getHeight(); 2074 int y; 2075 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2076 y = -h + PAGE_SCROLL_OVERLAP; 2077 } else { 2078 y = -h / 2; 2079 } 2080 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2081 : extendScroll(y); 2082 } 2083 2084 /** 2085 * Scroll the contents of the view down by half the page size 2086 * @param bottom true to jump to bottom of page 2087 * @return true if the page was scrolled 2088 */ 2089 public boolean pageDown(boolean bottom) { 2090 if (mNativeClass == 0) { 2091 return false; 2092 } 2093 nativeClearCursor(); // start next trackball movement from page edge 2094 if (bottom) { 2095 return pinScrollTo(mScrollX, computeRealVerticalScrollRange(), true, 0); 2096 } 2097 // Page down. 2098 int h = getHeight(); 2099 int y; 2100 if (h > 2 * PAGE_SCROLL_OVERLAP) { 2101 y = h - PAGE_SCROLL_OVERLAP; 2102 } else { 2103 y = h / 2; 2104 } 2105 return mScroller.isFinished() ? pinScrollBy(0, y, true, 0) 2106 : extendScroll(y); 2107 } 2108 2109 /** 2110 * Clear the view so that onDraw() will draw nothing but white background, 2111 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY 2112 */ 2113 public void clearView() { 2114 mContentWidth = 0; 2115 mContentHeight = 0; 2116 setBaseLayer(0, null, false, false); 2117 mWebViewCore.sendMessage(EventHub.CLEAR_CONTENT); 2118 } 2119 2120 /** 2121 * Return a new picture that captures the current display of the webview. 2122 * This is a copy of the display, and will be unaffected if the webview 2123 * later loads a different URL. 2124 * 2125 * @return a picture containing the current contents of the view. Note this 2126 * picture is of the entire document, and is not restricted to the 2127 * bounds of the view. 2128 */ 2129 public Picture capturePicture() { 2130 if (mNativeClass == 0) return null; 2131 Picture result = new Picture(); 2132 nativeCopyBaseContentToPicture(result); 2133 return result; 2134 } 2135 2136 /** 2137 * Return true if the browser is displaying a TextView for text input. 2138 */ 2139 private boolean inEditingMode() { 2140 return mWebTextView != null && mWebTextView.getParent() != null; 2141 } 2142 2143 /** 2144 * Remove the WebTextView. 2145 */ 2146 private void clearTextEntry() { 2147 if (inEditingMode()) { 2148 mWebTextView.remove(); 2149 } else { 2150 // The keyboard may be open with the WebView as the served view 2151 hideSoftKeyboard(); 2152 } 2153 } 2154 2155 /** 2156 * Return the current scale of the WebView 2157 * @return The current scale. 2158 */ 2159 public float getScale() { 2160 return mZoomManager.getScale(); 2161 } 2162 2163 /** 2164 * Set the initial scale for the WebView. 0 means default. If 2165 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 2166 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 2167 * WebView starts will this value as initial scale. 2168 * 2169 * @param scaleInPercent The initial scale in percent. 2170 */ 2171 public void setInitialScale(int scaleInPercent) { 2172 mZoomManager.setInitialScaleInPercent(scaleInPercent); 2173 } 2174 2175 /** 2176 * Invoke the graphical zoom picker widget for this WebView. This will 2177 * result in the zoom widget appearing on the screen to control the zoom 2178 * level of this WebView. 2179 */ 2180 public void invokeZoomPicker() { 2181 if (!getSettings().supportZoom()) { 2182 Log.w(LOGTAG, "This WebView doesn't support zoom."); 2183 return; 2184 } 2185 clearHelpers(); 2186 mZoomManager.invokeZoomPicker(); 2187 } 2188 2189 /** 2190 * Return a HitTestResult based on the current cursor node. If a HTML::a tag 2191 * is found and the anchor has a non-JavaScript url, the HitTestResult type 2192 * is set to SRC_ANCHOR_TYPE and the url is set in the "extra" field. If the 2193 * anchor does not have a url or if it is a JavaScript url, the type will 2194 * be UNKNOWN_TYPE and the url has to be retrieved through 2195 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 2196 * found, the HitTestResult type is set to IMAGE_TYPE and the url is set in 2197 * the "extra" field. A type of 2198 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a url that has an image as 2199 * a child node. If a phone number is found, the HitTestResult type is set 2200 * to PHONE_TYPE and the phone number is set in the "extra" field of 2201 * HitTestResult. If a map address is found, the HitTestResult type is set 2202 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 2203 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 2204 * and the email is set in the "extra" field of HitTestResult. Otherwise, 2205 * HitTestResult type is set to UNKNOWN_TYPE. 2206 */ 2207 public HitTestResult getHitTestResult() { 2208 return hitTestResult(mInitialHitTestResult); 2209 } 2210 2211 private HitTestResult hitTestResult(HitTestResult fallback) { 2212 if (mNativeClass == 0) { 2213 return null; 2214 } 2215 2216 HitTestResult result = new HitTestResult(); 2217 if (nativeHasCursorNode()) { 2218 if (nativeCursorIsTextInput()) { 2219 result.setType(HitTestResult.EDIT_TEXT_TYPE); 2220 } else { 2221 String text = nativeCursorText(); 2222 if (text != null) { 2223 if (text.startsWith(SCHEME_TEL)) { 2224 result.setType(HitTestResult.PHONE_TYPE); 2225 result.setExtra(text.substring(SCHEME_TEL.length())); 2226 } else if (text.startsWith(SCHEME_MAILTO)) { 2227 result.setType(HitTestResult.EMAIL_TYPE); 2228 result.setExtra(text.substring(SCHEME_MAILTO.length())); 2229 } else if (text.startsWith(SCHEME_GEO)) { 2230 result.setType(HitTestResult.GEO_TYPE); 2231 result.setExtra(URLDecoder.decode(text 2232 .substring(SCHEME_GEO.length()))); 2233 } else if (nativeCursorIsAnchor()) { 2234 result.setType(HitTestResult.SRC_ANCHOR_TYPE); 2235 result.setExtra(text); 2236 } 2237 } 2238 } 2239 } else if (fallback != null) { 2240 /* If webkit causes a rebuild while the long press is in progress, 2241 * the cursor node may be reset, even if it is still around. This 2242 * uses the cursor node saved when the touch began. Since the 2243 * nativeImageURI below only changes the result if it is successful, 2244 * this uses the data beneath the touch if available or the original 2245 * tap data otherwise. 2246 */ 2247 Log.v(LOGTAG, "hitTestResult use fallback"); 2248 result = fallback; 2249 } 2250 int type = result.getType(); 2251 if (type == HitTestResult.UNKNOWN_TYPE 2252 || type == HitTestResult.SRC_ANCHOR_TYPE) { 2253 // Now check to see if it is an image. 2254 int contentX = viewToContentX(mLastTouchX + mScrollX); 2255 int contentY = viewToContentY(mLastTouchY + mScrollY); 2256 String text = nativeImageURI(contentX, contentY); 2257 if (text != null) { 2258 result.setType(type == HitTestResult.UNKNOWN_TYPE ? 2259 HitTestResult.IMAGE_TYPE : 2260 HitTestResult.SRC_IMAGE_ANCHOR_TYPE); 2261 result.setExtra(text); 2262 } 2263 } 2264 return result; 2265 } 2266 2267 // Called by JNI when the DOM has changed the focus. Clear the focus so 2268 // that new keys will go to the newly focused field 2269 private void domChangedFocus() { 2270 if (inEditingMode()) { 2271 mPrivateHandler.obtainMessage(DOM_FOCUS_CHANGED).sendToTarget(); 2272 } 2273 } 2274 /** 2275 * Request the anchor or image element URL at the last tapped point. 2276 * If hrefMsg is null, this method returns immediately and does not 2277 * dispatch hrefMsg to its target. If the tapped point hits an image, 2278 * an anchor, or an image in an anchor, the message associates 2279 * strings in named keys in its data. The value paired with the key 2280 * may be an empty string. 2281 * 2282 * @param hrefMsg This message will be dispatched with the result of the 2283 * request. The message data contains three keys: 2284 * - "url" returns the anchor's href attribute. 2285 * - "title" returns the anchor's text. 2286 * - "src" returns the image's src attribute. 2287 */ 2288 public void requestFocusNodeHref(Message hrefMsg) { 2289 if (hrefMsg == null) { 2290 return; 2291 } 2292 int contentX = viewToContentX(mLastTouchX + mScrollX); 2293 int contentY = viewToContentY(mLastTouchY + mScrollY); 2294 if (nativeHasCursorNode()) { 2295 Rect cursorBounds = nativeGetCursorRingBounds(); 2296 if (!cursorBounds.contains(contentX, contentY)) { 2297 int slop = viewToContentDimension(mNavSlop); 2298 cursorBounds.inset(-slop, -slop); 2299 if (cursorBounds.contains(contentX, contentY)) { 2300 contentX = (int) cursorBounds.centerX(); 2301 contentY = (int) cursorBounds.centerY(); 2302 } 2303 } 2304 } 2305 mWebViewCore.sendMessage(EventHub.REQUEST_CURSOR_HREF, 2306 contentX, contentY, hrefMsg); 2307 } 2308 2309 /** 2310 * Request the url of the image last touched by the user. msg will be sent 2311 * to its target with a String representing the url as its object. 2312 * 2313 * @param msg This message will be dispatched with the result of the request 2314 * as the data member with "url" as key. The result can be null. 2315 */ 2316 public void requestImageRef(Message msg) { 2317 if (0 == mNativeClass) return; // client isn't initialized 2318 int contentX = viewToContentX(mLastTouchX + mScrollX); 2319 int contentY = viewToContentY(mLastTouchY + mScrollY); 2320 String ref = nativeImageURI(contentX, contentY); 2321 Bundle data = msg.getData(); 2322 data.putString("url", ref); 2323 msg.setData(data); 2324 msg.sendToTarget(); 2325 } 2326 2327 static int pinLoc(int x, int viewMax, int docMax) { 2328// Log.d(LOGTAG, "-- pinLoc " + x + " " + viewMax + " " + docMax); 2329 if (docMax < viewMax) { // the doc has room on the sides for "blank" 2330 // pin the short document to the top/left of the screen 2331 x = 0; 2332// Log.d(LOGTAG, "--- center " + x); 2333 } else if (x < 0) { 2334 x = 0; 2335// Log.d(LOGTAG, "--- zero"); 2336 } else if (x + viewMax > docMax) { 2337 x = docMax - viewMax; 2338// Log.d(LOGTAG, "--- pin " + x); 2339 } 2340 return x; 2341 } 2342 2343 // Expects x in view coordinates 2344 int pinLocX(int x) { 2345 if (mInOverScrollMode) return x; 2346 return pinLoc(x, getViewWidth(), computeRealHorizontalScrollRange()); 2347 } 2348 2349 // Expects y in view coordinates 2350 int pinLocY(int y) { 2351 if (mInOverScrollMode) return y; 2352 return pinLoc(y, getViewHeightWithTitle(), 2353 computeRealVerticalScrollRange() + getTitleHeight()); 2354 } 2355 2356 /** 2357 * A title bar which is embedded in this WebView, and scrolls along with it 2358 * vertically, but not horizontally. 2359 */ 2360 private View mTitleBar; 2361 2362 /** 2363 * the title bar rendering gravity 2364 */ 2365 private int mTitleGravity; 2366 2367 /** 2368 * Add or remove a title bar to be embedded into the WebView, and scroll 2369 * along with it vertically, while remaining in view horizontally. Pass 2370 * null to remove the title bar from the WebView, and return to drawing 2371 * the WebView normally without translating to account for the title bar. 2372 * @hide 2373 */ 2374 public void setEmbeddedTitleBar(View v) { 2375 if (mTitleBar == v) return; 2376 if (mTitleBar != null) { 2377 removeView(mTitleBar); 2378 } 2379 if (null != v) { 2380 addView(v, new AbsoluteLayout.LayoutParams( 2381 ViewGroup.LayoutParams.MATCH_PARENT, 2382 ViewGroup.LayoutParams.WRAP_CONTENT, 0, 0)); 2383 } 2384 mTitleBar = v; 2385 } 2386 2387 /** 2388 * Set where to render the embedded title bar 2389 * NO_GRAVITY at the top of the page 2390 * TOP at the top of the screen 2391 * @hide 2392 */ 2393 public void setTitleBarGravity(int gravity) { 2394 mTitleGravity = gravity; 2395 } 2396 2397 /** 2398 * Given a distance in view space, convert it to content space. Note: this 2399 * does not reflect translation, just scaling, so this should not be called 2400 * with coordinates, but should be called for dimensions like width or 2401 * height. 2402 */ 2403 private int viewToContentDimension(int d) { 2404 return Math.round(d * mZoomManager.getInvScale()); 2405 } 2406 2407 /** 2408 * Given an x coordinate in view space, convert it to content space. Also 2409 * may be used for absolute heights (such as for the WebTextView's 2410 * textSize, which is unaffected by the height of the title bar). 2411 */ 2412 /*package*/ int viewToContentX(int x) { 2413 return viewToContentDimension(x); 2414 } 2415 2416 /** 2417 * Given a y coordinate in view space, convert it to content space. 2418 * Takes into account the height of the title bar if there is one 2419 * embedded into the WebView. 2420 */ 2421 /*package*/ int viewToContentY(int y) { 2422 return viewToContentDimension(y - getTitleHeight()); 2423 } 2424 2425 /** 2426 * Given a x coordinate in view space, convert it to content space. 2427 * Returns the result as a float. 2428 */ 2429 private float viewToContentXf(int x) { 2430 return x * mZoomManager.getInvScale(); 2431 } 2432 2433 /** 2434 * Given a y coordinate in view space, convert it to content space. 2435 * Takes into account the height of the title bar if there is one 2436 * embedded into the WebView. Returns the result as a float. 2437 */ 2438 private float viewToContentYf(int y) { 2439 return (y - getTitleHeight()) * mZoomManager.getInvScale(); 2440 } 2441 2442 /** 2443 * Given a distance in content space, convert it to view space. Note: this 2444 * does not reflect translation, just scaling, so this should not be called 2445 * with coordinates, but should be called for dimensions like width or 2446 * height. 2447 */ 2448 /*package*/ int contentToViewDimension(int d) { 2449 return Math.round(d * mZoomManager.getScale()); 2450 } 2451 2452 /** 2453 * Given an x coordinate in content space, convert it to view 2454 * space. 2455 */ 2456 /*package*/ int contentToViewX(int x) { 2457 return contentToViewDimension(x); 2458 } 2459 2460 /** 2461 * Given a y coordinate in content space, convert it to view 2462 * space. Takes into account the height of the title bar. 2463 */ 2464 /*package*/ int contentToViewY(int y) { 2465 return contentToViewDimension(y) + getTitleHeight(); 2466 } 2467 2468 private Rect contentToViewRect(Rect x) { 2469 return new Rect(contentToViewX(x.left), contentToViewY(x.top), 2470 contentToViewX(x.right), contentToViewY(x.bottom)); 2471 } 2472 2473 /* To invalidate a rectangle in content coordinates, we need to transform 2474 the rect into view coordinates, so we can then call invalidate(...). 2475 2476 Normally, we would just call contentToView[XY](...), which eventually 2477 calls Math.round(coordinate * mActualScale). However, for invalidates, 2478 we need to account for the slop that occurs with antialiasing. To 2479 address that, we are a little more liberal in the size of the rect that 2480 we invalidate. 2481 2482 This liberal calculation calls floor() for the top/left, and ceil() for 2483 the bottom/right coordinates. This catches the possible extra pixels of 2484 antialiasing that we might have missed with just round(). 2485 */ 2486 2487 // Called by JNI to invalidate the View, given rectangle coordinates in 2488 // content space 2489 private void viewInvalidate(int l, int t, int r, int b) { 2490 final float scale = mZoomManager.getScale(); 2491 final int dy = getTitleHeight(); 2492 invalidate((int)Math.floor(l * scale), 2493 (int)Math.floor(t * scale) + dy, 2494 (int)Math.ceil(r * scale), 2495 (int)Math.ceil(b * scale) + dy); 2496 } 2497 2498 // Called by JNI to invalidate the View after a delay, given rectangle 2499 // coordinates in content space 2500 private void viewInvalidateDelayed(long delay, int l, int t, int r, int b) { 2501 final float scale = mZoomManager.getScale(); 2502 final int dy = getTitleHeight(); 2503 postInvalidateDelayed(delay, 2504 (int)Math.floor(l * scale), 2505 (int)Math.floor(t * scale) + dy, 2506 (int)Math.ceil(r * scale), 2507 (int)Math.ceil(b * scale) + dy); 2508 } 2509 2510 private void invalidateContentRect(Rect r) { 2511 viewInvalidate(r.left, r.top, r.right, r.bottom); 2512 } 2513 2514 // stop the scroll animation, and don't let a subsequent fling add 2515 // to the existing velocity 2516 private void abortAnimation() { 2517 mScroller.abortAnimation(); 2518 mLastVelocity = 0; 2519 } 2520 2521 /* call from webcoreview.draw(), so we're still executing in the UI thread 2522 */ 2523 private void recordNewContentSize(int w, int h, boolean updateLayout) { 2524 2525 // premature data from webkit, ignore 2526 if ((w | h) == 0) { 2527 return; 2528 } 2529 2530 // don't abort a scroll animation if we didn't change anything 2531 if (mContentWidth != w || mContentHeight != h) { 2532 // record new dimensions 2533 mContentWidth = w; 2534 mContentHeight = h; 2535 // If history Picture is drawn, don't update scroll. They will be 2536 // updated when we get out of that mode. 2537 if (!mDrawHistory) { 2538 // repin our scroll, taking into account the new content size 2539 updateScrollCoordinates(pinLocX(mScrollX), pinLocY(mScrollY)); 2540 if (!mScroller.isFinished()) { 2541 // We are in the middle of a scroll. Repin the final scroll 2542 // position. 2543 mScroller.setFinalX(pinLocX(mScroller.getFinalX())); 2544 mScroller.setFinalY(pinLocY(mScroller.getFinalY())); 2545 } 2546 } 2547 } 2548 contentSizeChanged(updateLayout); 2549 } 2550 2551 // Used to avoid sending many visible rect messages. 2552 private Rect mLastVisibleRectSent; 2553 private Rect mLastGlobalRect; 2554 2555 Rect sendOurVisibleRect() { 2556 if (mZoomManager.isPreventingWebkitUpdates()) return mLastVisibleRectSent; 2557 Rect rect = new Rect(); 2558 calcOurContentVisibleRect(rect); 2559 // Rect.equals() checks for null input. 2560 if (!rect.equals(mLastVisibleRectSent)) { 2561 Point pos = new Point(rect.left, rect.top); 2562 mWebViewCore.removeMessages(EventHub.SET_SCROLL_OFFSET); 2563 mWebViewCore.sendMessage(EventHub.SET_SCROLL_OFFSET, 2564 nativeMoveGeneration(), mSendScrollEvent ? 1 : 0, pos); 2565 mLastVisibleRectSent = rect; 2566 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 2567 } 2568 Rect globalRect = new Rect(); 2569 if (getGlobalVisibleRect(globalRect) 2570 && !globalRect.equals(mLastGlobalRect)) { 2571 if (DebugFlags.WEB_VIEW) { 2572 Log.v(LOGTAG, "sendOurVisibleRect=(" + globalRect.left + "," 2573 + globalRect.top + ",r=" + globalRect.right + ",b=" 2574 + globalRect.bottom); 2575 } 2576 // TODO: the global offset is only used by windowRect() 2577 // in ChromeClientAndroid ; other clients such as touch 2578 // and mouse events could return view + screen relative points. 2579 mWebViewCore.sendMessage(EventHub.SET_GLOBAL_BOUNDS, globalRect); 2580 mLastGlobalRect = globalRect; 2581 } 2582 return rect; 2583 } 2584 2585 // Sets r to be the visible rectangle of our webview in view coordinates 2586 private void calcOurVisibleRect(Rect r) { 2587 Point p = new Point(); 2588 getGlobalVisibleRect(r, p); 2589 r.offset(-p.x, -p.y); 2590 } 2591 2592 // Sets r to be our visible rectangle in content coordinates 2593 private void calcOurContentVisibleRect(Rect r) { 2594 calcOurVisibleRect(r); 2595 r.left = viewToContentX(r.left); 2596 // viewToContentY will remove the total height of the title bar. Add 2597 // the visible height back in to account for the fact that if the title 2598 // bar is partially visible, the part of the visible rect which is 2599 // displaying our content is displaced by that amount. 2600 r.top = viewToContentY(r.top + getVisibleTitleHeight()); 2601 r.right = viewToContentX(r.right); 2602 r.bottom = viewToContentY(r.bottom); 2603 } 2604 2605 // Sets r to be our visible rectangle in content coordinates. We use this 2606 // method on the native side to compute the position of the fixed layers. 2607 // Uses floating coordinates (necessary to correctly place elements when 2608 // the scale factor is not 1) 2609 private void calcOurContentVisibleRectF(RectF r) { 2610 Rect ri = new Rect(0,0,0,0); 2611 calcOurVisibleRect(ri); 2612 r.left = viewToContentXf(ri.left); 2613 // viewToContentY will remove the total height of the title bar. Add 2614 // the visible height back in to account for the fact that if the title 2615 // bar is partially visible, the part of the visible rect which is 2616 // displaying our content is displaced by that amount. 2617 r.top = viewToContentYf(ri.top + getVisibleTitleHeight()); 2618 r.right = viewToContentXf(ri.right); 2619 r.bottom = viewToContentYf(ri.bottom); 2620 } 2621 2622 static class ViewSizeData { 2623 int mWidth; 2624 int mHeight; 2625 float mHeightWidthRatio; 2626 int mActualViewHeight; 2627 int mTextWrapWidth; 2628 int mAnchorX; 2629 int mAnchorY; 2630 float mScale; 2631 boolean mIgnoreHeight; 2632 } 2633 2634 /** 2635 * Compute unzoomed width and height, and if they differ from the last 2636 * values we sent, send them to webkit (to be used as new viewport) 2637 * 2638 * @param force ensures that the message is sent to webkit even if the width 2639 * or height has not changed since the last message 2640 * 2641 * @return true if new values were sent 2642 */ 2643 boolean sendViewSizeZoom(boolean force) { 2644 if (mZoomManager.isPreventingWebkitUpdates()) return false; 2645 2646 int viewWidth = getViewWidth(); 2647 int newWidth = Math.round(viewWidth * mZoomManager.getInvScale()); 2648 // This height could be fixed and be different from actual visible height. 2649 int viewHeight = getViewHeightWithTitle() - getTitleHeight(); 2650 int newHeight = Math.round(viewHeight * mZoomManager.getInvScale()); 2651 // Make the ratio more accurate than (newHeight / newWidth), since the 2652 // latter both are calculated and rounded. 2653 float heightWidthRatio = (float) viewHeight / viewWidth; 2654 /* 2655 * Because the native side may have already done a layout before the 2656 * View system was able to measure us, we have to send a height of 0 to 2657 * remove excess whitespace when we grow our width. This will trigger a 2658 * layout and a change in content size. This content size change will 2659 * mean that contentSizeChanged will either call this method directly or 2660 * indirectly from onSizeChanged. 2661 */ 2662 if (newWidth > mLastWidthSent && mWrapContent) { 2663 newHeight = 0; 2664 heightWidthRatio = 0; 2665 } 2666 // Actual visible content height. 2667 int actualViewHeight = Math.round(getViewHeight() * mZoomManager.getInvScale()); 2668 // Avoid sending another message if the dimensions have not changed. 2669 if (newWidth != mLastWidthSent || newHeight != mLastHeightSent || force || 2670 actualViewHeight != mLastActualHeightSent) { 2671 ViewSizeData data = new ViewSizeData(); 2672 data.mWidth = newWidth; 2673 data.mHeight = newHeight; 2674 data.mHeightWidthRatio = heightWidthRatio; 2675 data.mActualViewHeight = actualViewHeight; 2676 data.mTextWrapWidth = Math.round(viewWidth / mZoomManager.getTextWrapScale()); 2677 data.mScale = mZoomManager.getScale(); 2678 data.mIgnoreHeight = mZoomManager.isFixedLengthAnimationInProgress() 2679 && !mHeightCanMeasure; 2680 data.mAnchorX = mZoomManager.getDocumentAnchorX(); 2681 data.mAnchorY = mZoomManager.getDocumentAnchorY(); 2682 mWebViewCore.sendMessage(EventHub.VIEW_SIZE_CHANGED, data); 2683 mLastWidthSent = newWidth; 2684 mLastHeightSent = newHeight; 2685 mLastActualHeightSent = actualViewHeight; 2686 mZoomManager.clearDocumentAnchor(); 2687 return true; 2688 } 2689 return false; 2690 } 2691 2692 private int computeRealHorizontalScrollRange() { 2693 if (mDrawHistory) { 2694 return mHistoryWidth; 2695 } else { 2696 // to avoid rounding error caused unnecessary scrollbar, use floor 2697 return (int) Math.floor(mContentWidth * mZoomManager.getScale()); 2698 } 2699 } 2700 2701 @Override 2702 protected int computeHorizontalScrollRange() { 2703 int range = computeRealHorizontalScrollRange(); 2704 2705 // Adjust reported range if overscrolled to compress the scroll bars 2706 final int scrollX = mScrollX; 2707 final int overscrollRight = computeMaxScrollX(); 2708 if (scrollX < 0) { 2709 range -= scrollX; 2710 } else if (scrollX > overscrollRight) { 2711 range += scrollX - overscrollRight; 2712 } 2713 2714 return range; 2715 } 2716 2717 @Override 2718 protected int computeHorizontalScrollOffset() { 2719 return Math.max(mScrollX, 0); 2720 } 2721 2722 private int computeRealVerticalScrollRange() { 2723 if (mDrawHistory) { 2724 return mHistoryHeight; 2725 } else { 2726 // to avoid rounding error caused unnecessary scrollbar, use floor 2727 return (int) Math.floor(mContentHeight * mZoomManager.getScale()); 2728 } 2729 } 2730 2731 @Override 2732 protected int computeVerticalScrollRange() { 2733 int range = computeRealVerticalScrollRange(); 2734 2735 // Adjust reported range if overscrolled to compress the scroll bars 2736 final int scrollY = mScrollY; 2737 final int overscrollBottom = computeMaxScrollY(); 2738 if (scrollY < 0) { 2739 range -= scrollY; 2740 } else if (scrollY > overscrollBottom) { 2741 range += scrollY - overscrollBottom; 2742 } 2743 2744 return range; 2745 } 2746 2747 @Override 2748 protected int computeVerticalScrollOffset() { 2749 return Math.max(mScrollY - getTitleHeight(), 0); 2750 } 2751 2752 @Override 2753 protected int computeVerticalScrollExtent() { 2754 return getViewHeight(); 2755 } 2756 2757 /** @hide */ 2758 @Override 2759 protected void onDrawVerticalScrollBar(Canvas canvas, 2760 Drawable scrollBar, 2761 int l, int t, int r, int b) { 2762 if (mScrollY < 0) { 2763 t -= mScrollY; 2764 } 2765 scrollBar.setBounds(l, t + getVisibleTitleHeight(), r, b); 2766 scrollBar.draw(canvas); 2767 } 2768 2769 @Override 2770 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, 2771 boolean clampedY) { 2772 // Special-case layer scrolling so that we do not trigger normal scroll 2773 // updating. 2774 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 2775 nativeScrollLayer(mScrollingLayer, scrollX, scrollY); 2776 mScrollingLayerRect.left = scrollX; 2777 mScrollingLayerRect.top = scrollY; 2778 invalidate(); 2779 return; 2780 } 2781 mInOverScrollMode = false; 2782 int maxX = computeMaxScrollX(); 2783 int maxY = computeMaxScrollY(); 2784 if (maxX == 0) { 2785 // do not over scroll x if the page just fits the screen 2786 scrollX = pinLocX(scrollX); 2787 } else if (scrollX < 0 || scrollX > maxX) { 2788 mInOverScrollMode = true; 2789 } 2790 if (scrollY < 0 || scrollY > maxY) { 2791 mInOverScrollMode = true; 2792 } 2793 2794 int oldX = mScrollX; 2795 int oldY = mScrollY; 2796 2797 super.scrollTo(scrollX, scrollY); 2798 2799 if (mOverScrollGlow != null) { 2800 mOverScrollGlow.pullGlow(mScrollX, mScrollY, oldX, oldY, maxX, maxY); 2801 } 2802 } 2803 2804 /** 2805 * Get the url for the current page. This is not always the same as the url 2806 * passed to WebViewClient.onPageStarted because although the load for 2807 * that url has begun, the current page may not have changed. 2808 * @return The url for the current page. 2809 */ 2810 public String getUrl() { 2811 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2812 return h != null ? h.getUrl() : null; 2813 } 2814 2815 /** 2816 * Get the original url for the current page. This is not always the same 2817 * as the url passed to WebViewClient.onPageStarted because although the 2818 * load for that url has begun, the current page may not have changed. 2819 * Also, there may have been redirects resulting in a different url to that 2820 * originally requested. 2821 * @return The url that was originally requested for the current page. 2822 */ 2823 public String getOriginalUrl() { 2824 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2825 return h != null ? h.getOriginalUrl() : null; 2826 } 2827 2828 /** 2829 * Get the title for the current page. This is the title of the current page 2830 * until WebViewClient.onReceivedTitle is called. 2831 * @return The title for the current page. 2832 */ 2833 public String getTitle() { 2834 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2835 return h != null ? h.getTitle() : null; 2836 } 2837 2838 /** 2839 * Get the favicon for the current page. This is the favicon of the current 2840 * page until WebViewClient.onReceivedIcon is called. 2841 * @return The favicon for the current page. 2842 */ 2843 public Bitmap getFavicon() { 2844 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2845 return h != null ? h.getFavicon() : null; 2846 } 2847 2848 /** 2849 * Get the touch icon url for the apple-touch-icon <link> element, or 2850 * a URL on this site's server pointing to the standard location of a 2851 * touch icon. 2852 * @hide 2853 */ 2854 public String getTouchIconUrl() { 2855 WebHistoryItem h = mCallbackProxy.getBackForwardList().getCurrentItem(); 2856 return h != null ? h.getTouchIconUrl() : null; 2857 } 2858 2859 /** 2860 * Get the progress for the current page. 2861 * @return The progress for the current page between 0 and 100. 2862 */ 2863 public int getProgress() { 2864 return mCallbackProxy.getProgress(); 2865 } 2866 2867 /** 2868 * @return the height of the HTML content. 2869 */ 2870 public int getContentHeight() { 2871 return mContentHeight; 2872 } 2873 2874 /** 2875 * @return the width of the HTML content. 2876 * @hide 2877 */ 2878 public int getContentWidth() { 2879 return mContentWidth; 2880 } 2881 2882 /** 2883 * Pause all layout, parsing, and JavaScript timers for all webviews. This 2884 * is a global requests, not restricted to just this webview. This can be 2885 * useful if the application has been paused. 2886 */ 2887 public void pauseTimers() { 2888 mWebViewCore.sendMessage(EventHub.PAUSE_TIMERS); 2889 } 2890 2891 /** 2892 * Resume all layout, parsing, and JavaScript timers for all webviews. 2893 * This will resume dispatching all timers. 2894 */ 2895 public void resumeTimers() { 2896 mWebViewCore.sendMessage(EventHub.RESUME_TIMERS); 2897 } 2898 2899 /** 2900 * Call this to pause any extra processing associated with this WebView and 2901 * its associated DOM, plugins, JavaScript etc. For example, if the WebView 2902 * is taken offscreen, this could be called to reduce unnecessary CPU or 2903 * network traffic. When the WebView is again "active", call onResume(). 2904 * 2905 * Note that this differs from pauseTimers(), which affects all WebViews. 2906 */ 2907 public void onPause() { 2908 if (!mIsPaused) { 2909 mIsPaused = true; 2910 mWebViewCore.sendMessage(EventHub.ON_PAUSE); 2911 // We want to pause the current playing video when switching out 2912 // from the current WebView/tab. 2913 if (mHTML5VideoViewProxy != null) { 2914 mHTML5VideoViewProxy.pauseAndDispatch(); 2915 } 2916 } 2917 } 2918 2919 /** 2920 * Call this to resume a WebView after a previous call to onPause(). 2921 */ 2922 public void onResume() { 2923 if (mIsPaused) { 2924 mIsPaused = false; 2925 mWebViewCore.sendMessage(EventHub.ON_RESUME); 2926 } 2927 } 2928 2929 /** 2930 * Returns true if the view is paused, meaning onPause() was called. Calling 2931 * onResume() sets the paused state back to false. 2932 * @hide 2933 */ 2934 public boolean isPaused() { 2935 return mIsPaused; 2936 } 2937 2938 /** 2939 * Call this to inform the view that memory is low so that it can 2940 * free any available memory. 2941 */ 2942 public void freeMemory() { 2943 mWebViewCore.sendMessage(EventHub.FREE_MEMORY); 2944 } 2945 2946 /** 2947 * Clear the resource cache. Note that the cache is per-application, so 2948 * this will clear the cache for all WebViews used. 2949 * 2950 * @param includeDiskFiles If false, only the RAM cache is cleared. 2951 */ 2952 public void clearCache(boolean includeDiskFiles) { 2953 // Note: this really needs to be a static method as it clears cache for all 2954 // WebView. But we need mWebViewCore to send message to WebCore thread, so 2955 // we can't make this static. 2956 mWebViewCore.sendMessage(EventHub.CLEAR_CACHE, 2957 includeDiskFiles ? 1 : 0, 0); 2958 } 2959 2960 /** 2961 * Make sure that clearing the form data removes the adapter from the 2962 * currently focused textfield if there is one. 2963 */ 2964 public void clearFormData() { 2965 if (inEditingMode()) { 2966 AutoCompleteAdapter adapter = null; 2967 mWebTextView.setAdapterCustom(adapter); 2968 } 2969 } 2970 2971 /** 2972 * Tell the WebView to clear its internal back/forward list. 2973 */ 2974 public void clearHistory() { 2975 mCallbackProxy.getBackForwardList().setClearPending(); 2976 mWebViewCore.sendMessage(EventHub.CLEAR_HISTORY); 2977 } 2978 2979 /** 2980 * Clear the SSL preferences table stored in response to proceeding with SSL 2981 * certificate errors. 2982 */ 2983 public void clearSslPreferences() { 2984 mWebViewCore.sendMessage(EventHub.CLEAR_SSL_PREF_TABLE); 2985 } 2986 2987 /** 2988 * Return the WebBackForwardList for this WebView. This contains the 2989 * back/forward list for use in querying each item in the history stack. 2990 * This is a copy of the private WebBackForwardList so it contains only a 2991 * snapshot of the current state. Multiple calls to this method may return 2992 * different objects. The object returned from this method will not be 2993 * updated to reflect any new state. 2994 */ 2995 public WebBackForwardList copyBackForwardList() { 2996 return mCallbackProxy.getBackForwardList().clone(); 2997 } 2998 2999 /* 3000 * Highlight and scroll to the next occurance of String in findAll. 3001 * Wraps the page infinitely, and scrolls. Must be called after 3002 * calling findAll. 3003 * 3004 * @param forward Direction to search. 3005 */ 3006 public void findNext(boolean forward) { 3007 if (0 == mNativeClass) return; // client isn't initialized 3008 nativeFindNext(forward); 3009 } 3010 3011 /* 3012 * Find all instances of find on the page and highlight them. 3013 * @param find String to find. 3014 * @return int The number of occurances of the String "find" 3015 * that were found. 3016 */ 3017 public int findAll(String find) { 3018 if (0 == mNativeClass) return 0; // client isn't initialized 3019 int result = find != null ? nativeFindAll(find.toLowerCase(), 3020 find.toUpperCase(), find.equalsIgnoreCase(mLastFind)) : 0; 3021 invalidate(); 3022 mLastFind = find; 3023 return result; 3024 } 3025 3026 /** 3027 * Start an ActionMode for finding text in this WebView. Only works if this 3028 * WebView is attached to the view system. 3029 * @param text If non-null, will be the initial text to search for. 3030 * Otherwise, the last String searched for in this WebView will 3031 * be used to start. 3032 * @param showIme If true, show the IME, assuming the user will begin typing. 3033 * If false and text is non-null, perform a find all. 3034 * @return boolean True if the find dialog is shown, false otherwise. 3035 */ 3036 public boolean showFindDialog(String text, boolean showIme) { 3037 FindActionModeCallback callback = new FindActionModeCallback(mContext); 3038 if (getParent() == null || startActionMode(callback) == null) { 3039 // Could not start the action mode, so end Find on page 3040 return false; 3041 } 3042 mFindCallback = callback; 3043 setFindIsUp(true); 3044 mFindCallback.setWebView(this); 3045 if (showIme) { 3046 mFindCallback.showSoftInput(); 3047 } else if (text != null) { 3048 mFindCallback.setText(text); 3049 mFindCallback.findAll(); 3050 return true; 3051 } 3052 if (text == null) { 3053 text = mLastFind; 3054 } 3055 if (text != null) { 3056 mFindCallback.setText(text); 3057 } 3058 return true; 3059 } 3060 3061 /** 3062 * Keep track of the find callback so that we can remove its titlebar if 3063 * necessary. 3064 */ 3065 private FindActionModeCallback mFindCallback; 3066 3067 /** 3068 * Toggle whether the find dialog is showing, for both native and Java. 3069 */ 3070 private void setFindIsUp(boolean isUp) { 3071 mFindIsUp = isUp; 3072 if (0 == mNativeClass) return; // client isn't initialized 3073 nativeSetFindIsUp(isUp); 3074 } 3075 3076 /** 3077 * Return the index of the currently highlighted match. 3078 */ 3079 int findIndex() { 3080 if (0 == mNativeClass) return -1; 3081 return nativeFindIndex(); 3082 } 3083 3084 // Used to know whether the find dialog is open. Affects whether 3085 // or not we draw the highlights for matches. 3086 private boolean mFindIsUp; 3087 3088 // Keep track of the last string sent, so we can search again when find is 3089 // reopened. 3090 private String mLastFind; 3091 3092 /** 3093 * Return the first substring consisting of the address of a physical 3094 * location. Currently, only addresses in the United States are detected, 3095 * and consist of: 3096 * - a house number 3097 * - a street name 3098 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3099 * - a city name 3100 * - a state or territory, either spelled out or two-letter abbr. 3101 * - an optional 5 digit or 9 digit zip code. 3102 * 3103 * All names must be correctly capitalized, and the zip code, if present, 3104 * must be valid for the state. The street type must be a standard USPS 3105 * spelling or abbreviation. The state or territory must also be spelled 3106 * or abbreviated using USPS standards. The house number may not exceed 3107 * five digits. 3108 * @param addr The string to search for addresses. 3109 * 3110 * @return the address, or if no address is found, return null. 3111 */ 3112 public static String findAddress(String addr) { 3113 return findAddress(addr, false); 3114 } 3115 3116 /** 3117 * @hide 3118 * Return the first substring consisting of the address of a physical 3119 * location. Currently, only addresses in the United States are detected, 3120 * and consist of: 3121 * - a house number 3122 * - a street name 3123 * - a street type (Road, Circle, etc), either spelled out or abbreviated 3124 * - a city name 3125 * - a state or territory, either spelled out or two-letter abbr. 3126 * - an optional 5 digit or 9 digit zip code. 3127 * 3128 * Names are optionally capitalized, and the zip code, if present, 3129 * must be valid for the state. The street type must be a standard USPS 3130 * spelling or abbreviation. The state or territory must also be spelled 3131 * or abbreviated using USPS standards. The house number may not exceed 3132 * five digits. 3133 * @param addr The string to search for addresses. 3134 * @param caseInsensitive addr Set to true to make search ignore case. 3135 * 3136 * @return the address, or if no address is found, return null. 3137 */ 3138 public static String findAddress(String addr, boolean caseInsensitive) { 3139 return WebViewCore.nativeFindAddress(addr, caseInsensitive); 3140 } 3141 3142 /* 3143 * Clear the highlighting surrounding text matches created by findAll. 3144 */ 3145 public void clearMatches() { 3146 if (mNativeClass == 0) 3147 return; 3148 nativeSetFindIsEmpty(); 3149 invalidate(); 3150 } 3151 3152 /** 3153 * Called when the find ActionMode ends. 3154 */ 3155 void notifyFindDialogDismissed() { 3156 mFindCallback = null; 3157 if (mWebViewCore == null) { 3158 return; 3159 } 3160 clearMatches(); 3161 setFindIsUp(false); 3162 // Now that the dialog has been removed, ensure that we scroll to a 3163 // location that is not beyond the end of the page. 3164 pinScrollTo(mScrollX, mScrollY, false, 0); 3165 invalidate(); 3166 } 3167 3168 /** 3169 * Query the document to see if it contains any image references. The 3170 * message object will be dispatched with arg1 being set to 1 if images 3171 * were found and 0 if the document does not reference any images. 3172 * @param response The message that will be dispatched with the result. 3173 */ 3174 public void documentHasImages(Message response) { 3175 if (response == null) { 3176 return; 3177 } 3178 mWebViewCore.sendMessage(EventHub.DOC_HAS_IMAGES, response); 3179 } 3180 3181 /** 3182 * Request the scroller to abort any ongoing animation 3183 * 3184 * @hide 3185 */ 3186 public void stopScroll() { 3187 mScroller.forceFinished(true); 3188 mLastVelocity = 0; 3189 } 3190 3191 @Override 3192 public void computeScroll() { 3193 if (mScroller.computeScrollOffset()) { 3194 int oldX = mScrollX; 3195 int oldY = mScrollY; 3196 int x = mScroller.getCurrX(); 3197 int y = mScroller.getCurrY(); 3198 invalidate(); // So we draw again 3199 3200 if (!mScroller.isFinished()) { 3201 int rangeX = computeMaxScrollX(); 3202 int rangeY = computeMaxScrollY(); 3203 int overflingDistance = mOverflingDistance; 3204 3205 // Use the layer's scroll data if needed. 3206 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 3207 oldX = mScrollingLayerRect.left; 3208 oldY = mScrollingLayerRect.top; 3209 rangeX = mScrollingLayerRect.right; 3210 rangeY = mScrollingLayerRect.bottom; 3211 // No overscrolling for layers. 3212 overflingDistance = 0; 3213 } 3214 3215 overScrollBy(x - oldX, y - oldY, oldX, oldY, 3216 rangeX, rangeY, 3217 overflingDistance, overflingDistance, false); 3218 3219 if (mOverScrollGlow != null) { 3220 mOverScrollGlow.absorbGlow(x, y, oldX, oldY, rangeX, rangeY); 3221 } 3222 } else { 3223 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 3224 mScrollX = x; 3225 mScrollY = y; 3226 } else { 3227 // Update the layer position instead of WebView. 3228 nativeScrollLayer(mScrollingLayer, x, y); 3229 mScrollingLayerRect.left = x; 3230 mScrollingLayerRect.top = y; 3231 } 3232 abortAnimation(); 3233 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 3234 WebViewCore.resumePriority(); 3235 if (!mSelectingText) { 3236 WebViewCore.resumeUpdatePicture(mWebViewCore); 3237 } 3238 if (oldX != mScrollX || oldY != mScrollY) { 3239 sendOurVisibleRect(); 3240 } 3241 } 3242 } else { 3243 super.computeScroll(); 3244 } 3245 } 3246 3247 private static int computeDuration(int dx, int dy) { 3248 int distance = Math.max(Math.abs(dx), Math.abs(dy)); 3249 int duration = distance * 1000 / STD_SPEED; 3250 return Math.min(duration, MAX_DURATION); 3251 } 3252 3253 // helper to pin the scrollBy parameters (already in view coordinates) 3254 // returns true if the scroll was changed 3255 private boolean pinScrollBy(int dx, int dy, boolean animate, int animationDuration) { 3256 return pinScrollTo(mScrollX + dx, mScrollY + dy, animate, animationDuration); 3257 } 3258 // helper to pin the scrollTo parameters (already in view coordinates) 3259 // returns true if the scroll was changed 3260 private boolean pinScrollTo(int x, int y, boolean animate, int animationDuration) { 3261 x = pinLocX(x); 3262 y = pinLocY(y); 3263 int dx = x - mScrollX; 3264 int dy = y - mScrollY; 3265 3266 if ((dx | dy) == 0) { 3267 return false; 3268 } 3269 abortAnimation(); 3270 if (animate) { 3271 // Log.d(LOGTAG, "startScroll: " + dx + " " + dy); 3272 mScroller.startScroll(mScrollX, mScrollY, dx, dy, 3273 animationDuration > 0 ? animationDuration : computeDuration(dx, dy)); 3274 awakenScrollBars(mScroller.getDuration()); 3275 invalidate(); 3276 } else { 3277 scrollTo(x, y); 3278 } 3279 return true; 3280 } 3281 3282 // Scale from content to view coordinates, and pin. 3283 // Also called by jni webview.cpp 3284 private boolean setContentScrollBy(int cx, int cy, boolean animate) { 3285 if (mDrawHistory) { 3286 // disallow WebView to change the scroll position as History Picture 3287 // is used in the view system. 3288 // TODO: as we switchOutDrawHistory when trackball or navigation 3289 // keys are hit, this should be safe. Right? 3290 return false; 3291 } 3292 cx = contentToViewDimension(cx); 3293 cy = contentToViewDimension(cy); 3294 if (mHeightCanMeasure) { 3295 // move our visible rect according to scroll request 3296 if (cy != 0) { 3297 Rect tempRect = new Rect(); 3298 calcOurVisibleRect(tempRect); 3299 tempRect.offset(cx, cy); 3300 requestRectangleOnScreen(tempRect); 3301 } 3302 // FIXME: We scroll horizontally no matter what because currently 3303 // ScrollView and ListView will not scroll horizontally. 3304 // FIXME: Why do we only scroll horizontally if there is no 3305 // vertical scroll? 3306// Log.d(LOGTAG, "setContentScrollBy cy=" + cy); 3307 return cy == 0 && cx != 0 && pinScrollBy(cx, 0, animate, 0); 3308 } else { 3309 return pinScrollBy(cx, cy, animate, 0); 3310 } 3311 } 3312 3313 /** 3314 * Called by CallbackProxy when the page starts loading. 3315 * @param url The URL of the page which has started loading. 3316 */ 3317 /* package */ void onPageStarted(String url) { 3318 // every time we start a new page, we want to reset the 3319 // WebView certificate: if the new site is secure, we 3320 // will reload it and get a new certificate set; 3321 // if the new site is not secure, the certificate must be 3322 // null, and that will be the case 3323 setCertificate(null); 3324 3325 // reset the flag since we set to true in if need after 3326 // loading is see onPageFinished(Url) 3327 mAccessibilityScriptInjected = false; 3328 } 3329 3330 /** 3331 * Called by CallbackProxy when the page finishes loading. 3332 * @param url The URL of the page which has finished loading. 3333 */ 3334 /* package */ void onPageFinished(String url) { 3335 if (mPageThatNeedsToSlideTitleBarOffScreen != null) { 3336 // If the user is now on a different page, or has scrolled the page 3337 // past the point where the title bar is offscreen, ignore the 3338 // scroll request. 3339 if (mPageThatNeedsToSlideTitleBarOffScreen.equals(url) 3340 && mScrollX == 0 && mScrollY == 0) { 3341 pinScrollTo(0, mYDistanceToSlideTitleOffScreen, true, 3342 SLIDE_TITLE_DURATION); 3343 } 3344 mPageThatNeedsToSlideTitleBarOffScreen = null; 3345 } 3346 mZoomManager.onPageFinished(url); 3347 injectAccessibilityForUrl(url); 3348 } 3349 3350 /** 3351 * This method injects accessibility in the loaded document if accessibility 3352 * is enabled. If JavaScript is enabled we try to inject a URL specific script. 3353 * If no URL specific script is found or JavaScript is disabled we fallback to 3354 * the default {@link AccessibilityInjector} implementation. 3355 * </p> 3356 * If the URL has the "axs" paramter set to 1 it has already done the 3357 * script injection so we do nothing. If the parameter is set to 0 3358 * the URL opts out accessibility script injection so we fall back to 3359 * the default {@link AccessibilityInjector}. 3360 * </p> 3361 * Note: If the user has not opted-in the accessibility script injection no scripts 3362 * are injected rather the default {@link AccessibilityInjector} implementation 3363 * is used. 3364 * 3365 * @param url The URL loaded by this {@link WebView}. 3366 */ 3367 private void injectAccessibilityForUrl(String url) { 3368 if (mWebViewCore == null) { 3369 return; 3370 } 3371 AccessibilityManager accessibilityManager = AccessibilityManager.getInstance(mContext); 3372 3373 if (!accessibilityManager.isEnabled()) { 3374 // it is possible that accessibility was turned off between reloads 3375 ensureAccessibilityScriptInjectorInstance(false); 3376 return; 3377 } 3378 3379 if (!getSettings().getJavaScriptEnabled()) { 3380 // no JS so we fallback to the basic buil-in support 3381 ensureAccessibilityScriptInjectorInstance(true); 3382 return; 3383 } 3384 3385 // check the URL "axs" parameter to choose appropriate action 3386 int axsParameterValue = getAxsUrlParameterValue(url); 3387 if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_UNDEFINED) { 3388 boolean onDeviceScriptInjectionEnabled = (Settings.Secure.getInt(mContext 3389 .getContentResolver(), Settings.Secure.ACCESSIBILITY_SCRIPT_INJECTION, 0) == 1); 3390 if (onDeviceScriptInjectionEnabled) { 3391 ensureAccessibilityScriptInjectorInstance(false); 3392 // neither script injected nor script injection opted out => we inject 3393 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3394 // TODO: Set this flag after successfull script injection. Maybe upon injection 3395 // the chooser should update the meta tag and we check it to declare success 3396 mAccessibilityScriptInjected = true; 3397 } else { 3398 // injection disabled so we fallback to the basic built-in support 3399 ensureAccessibilityScriptInjectorInstance(true); 3400 } 3401 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_OPTED_OUT) { 3402 // injection opted out so we fallback to the basic buil-in support 3403 ensureAccessibilityScriptInjectorInstance(true); 3404 } else if (axsParameterValue == ACCESSIBILITY_SCRIPT_INJECTION_PROVIDED) { 3405 ensureAccessibilityScriptInjectorInstance(false); 3406 // the URL provides accessibility but we still need to add our generic script 3407 loadUrl(ACCESSIBILITY_SCRIPT_CHOOSER_JAVASCRIPT); 3408 } else { 3409 Log.e(LOGTAG, "Unknown URL value for the \"axs\" URL parameter: " + axsParameterValue); 3410 } 3411 } 3412 3413 /** 3414 * Ensures the instance of the {@link AccessibilityInjector} to be present ot not. 3415 * 3416 * @param present True to ensure an insance, false to ensure no instance. 3417 */ 3418 private void ensureAccessibilityScriptInjectorInstance(boolean present) { 3419 if (present) { 3420 if (mAccessibilityInjector == null) { 3421 mAccessibilityInjector = new AccessibilityInjector(this); 3422 } 3423 } else { 3424 mAccessibilityInjector = null; 3425 } 3426 } 3427 3428 /** 3429 * Gets the "axs" URL parameter value. 3430 * 3431 * @param url A url to fetch the paramter from. 3432 * @return The parameter value if such, -1 otherwise. 3433 */ 3434 private int getAxsUrlParameterValue(String url) { 3435 if (mMatchAxsUrlParameterPattern == null) { 3436 mMatchAxsUrlParameterPattern = Pattern.compile(PATTERN_MATCH_AXS_URL_PARAMETER); 3437 } 3438 Matcher matcher = mMatchAxsUrlParameterPattern.matcher(url); 3439 if (matcher.find()) { 3440 String keyValuePair = url.substring(matcher.start(), matcher.end()); 3441 return Integer.parseInt(keyValuePair.split("=")[1]); 3442 } 3443 return -1; 3444 } 3445 3446 /** 3447 * The URL of a page that sent a message to scroll the title bar off screen. 3448 * 3449 * Many mobile sites tell the page to scroll to (0,1) in order to scroll the 3450 * title bar off the screen. Sometimes, the scroll position is set before 3451 * the page finishes loading. Rather than scrolling while the page is still 3452 * loading, keep track of the URL and new scroll position so we can perform 3453 * the scroll once the page finishes loading. 3454 */ 3455 private String mPageThatNeedsToSlideTitleBarOffScreen; 3456 3457 /** 3458 * The destination Y scroll position to be used when the page finishes 3459 * loading. See mPageThatNeedsToSlideTitleBarOffScreen. 3460 */ 3461 private int mYDistanceToSlideTitleOffScreen; 3462 3463 // scale from content to view coordinates, and pin 3464 // return true if pin caused the final x/y different than the request cx/cy, 3465 // and a future scroll may reach the request cx/cy after our size has 3466 // changed 3467 // return false if the view scroll to the exact position as it is requested, 3468 // where negative numbers are taken to mean 0 3469 private boolean setContentScrollTo(int cx, int cy) { 3470 if (mDrawHistory) { 3471 // disallow WebView to change the scroll position as History Picture 3472 // is used in the view system. 3473 // One known case where this is called is that WebCore tries to 3474 // restore the scroll position. As history Picture already uses the 3475 // saved scroll position, it is ok to skip this. 3476 return false; 3477 } 3478 int vx; 3479 int vy; 3480 if ((cx | cy) == 0) { 3481 // If the page is being scrolled to (0,0), do not add in the title 3482 // bar's height, and simply scroll to (0,0). (The only other work 3483 // in contentToView_ is to multiply, so this would not change 0.) 3484 vx = 0; 3485 vy = 0; 3486 } else { 3487 vx = contentToViewX(cx); 3488 vy = contentToViewY(cy); 3489 } 3490// Log.d(LOGTAG, "content scrollTo [" + cx + " " + cy + "] view=[" + 3491// vx + " " + vy + "]"); 3492 // Some mobile sites attempt to scroll the title bar off the page by 3493 // scrolling to (0,1). If we are at the top left corner of the 3494 // page, assume this is an attempt to scroll off the title bar, and 3495 // animate the title bar off screen slowly enough that the user can see 3496 // it. 3497 if (cx == 0 && cy == 1 && mScrollX == 0 && mScrollY == 0 3498 && mTitleBar != null) { 3499 // FIXME: 100 should be defined somewhere as our max progress. 3500 if (getProgress() < 100) { 3501 // Wait to scroll the title bar off screen until the page has 3502 // finished loading. Keep track of the URL and the destination 3503 // Y position 3504 mPageThatNeedsToSlideTitleBarOffScreen = getUrl(); 3505 mYDistanceToSlideTitleOffScreen = vy; 3506 } else { 3507 pinScrollTo(vx, vy, true, SLIDE_TITLE_DURATION); 3508 } 3509 // Since we are animating, we have not yet reached the desired 3510 // scroll position. Do not return true to request another attempt 3511 return false; 3512 } 3513 pinScrollTo(vx, vy, false, 0); 3514 // If the request was to scroll to a negative coordinate, treat it as if 3515 // it was a request to scroll to 0 3516 if ((mScrollX != vx && cx >= 0) || (mScrollY != vy && cy >= 0)) { 3517 return true; 3518 } else { 3519 return false; 3520 } 3521 } 3522 3523 // scale from content to view coordinates, and pin 3524 private void spawnContentScrollTo(int cx, int cy) { 3525 if (mDrawHistory) { 3526 // disallow WebView to change the scroll position as History Picture 3527 // is used in the view system. 3528 return; 3529 } 3530 int vx = contentToViewX(cx); 3531 int vy = contentToViewY(cy); 3532 pinScrollTo(vx, vy, true, 0); 3533 } 3534 3535 /** 3536 * These are from webkit, and are in content coordinate system (unzoomed) 3537 */ 3538 private void contentSizeChanged(boolean updateLayout) { 3539 // suppress 0,0 since we usually see real dimensions soon after 3540 // this avoids drawing the prev content in a funny place. If we find a 3541 // way to consolidate these notifications, this check may become 3542 // obsolete 3543 if ((mContentWidth | mContentHeight) == 0) { 3544 return; 3545 } 3546 3547 if (mHeightCanMeasure) { 3548 if (getMeasuredHeight() != contentToViewDimension(mContentHeight) 3549 || updateLayout) { 3550 requestLayout(); 3551 } 3552 } else if (mWidthCanMeasure) { 3553 if (getMeasuredWidth() != contentToViewDimension(mContentWidth) 3554 || updateLayout) { 3555 requestLayout(); 3556 } 3557 } else { 3558 // If we don't request a layout, try to send our view size to the 3559 // native side to ensure that WebCore has the correct dimensions. 3560 sendViewSizeZoom(false); 3561 } 3562 } 3563 3564 /** 3565 * Set the WebViewClient that will receive various notifications and 3566 * requests. This will replace the current handler. 3567 * @param client An implementation of WebViewClient. 3568 */ 3569 public void setWebViewClient(WebViewClient client) { 3570 mCallbackProxy.setWebViewClient(client); 3571 } 3572 3573 /** 3574 * Gets the WebViewClient 3575 * @return the current WebViewClient instance. 3576 * 3577 *@hide pending API council approval. 3578 */ 3579 public WebViewClient getWebViewClient() { 3580 return mCallbackProxy.getWebViewClient(); 3581 } 3582 3583 /** 3584 * Register the interface to be used when content can not be handled by 3585 * the rendering engine, and should be downloaded instead. This will replace 3586 * the current handler. 3587 * @param listener An implementation of DownloadListener. 3588 */ 3589 public void setDownloadListener(DownloadListener listener) { 3590 mCallbackProxy.setDownloadListener(listener); 3591 } 3592 3593 /** 3594 * Set the chrome handler. This is an implementation of WebChromeClient for 3595 * use in handling JavaScript dialogs, favicons, titles, and the progress. 3596 * This will replace the current handler. 3597 * @param client An implementation of WebChromeClient. 3598 */ 3599 public void setWebChromeClient(WebChromeClient client) { 3600 mCallbackProxy.setWebChromeClient(client); 3601 } 3602 3603 /** 3604 * Gets the chrome handler. 3605 * @return the current WebChromeClient instance. 3606 * 3607 * @hide API council approval. 3608 */ 3609 public WebChromeClient getWebChromeClient() { 3610 return mCallbackProxy.getWebChromeClient(); 3611 } 3612 3613 /** 3614 * Set the back/forward list client. This is an implementation of 3615 * WebBackForwardListClient for handling new items and changes in the 3616 * history index. 3617 * @param client An implementation of WebBackForwardListClient. 3618 * {@hide} 3619 */ 3620 public void setWebBackForwardListClient(WebBackForwardListClient client) { 3621 mCallbackProxy.setWebBackForwardListClient(client); 3622 } 3623 3624 /** 3625 * Gets the WebBackForwardListClient. 3626 * {@hide} 3627 */ 3628 public WebBackForwardListClient getWebBackForwardListClient() { 3629 return mCallbackProxy.getWebBackForwardListClient(); 3630 } 3631 3632 /** 3633 * Set the Picture listener. This is an interface used to receive 3634 * notifications of a new Picture. 3635 * @param listener An implementation of WebView.PictureListener. 3636 * @deprecated This method is now obsolete. 3637 */ 3638 @Deprecated 3639 public void setPictureListener(PictureListener listener) { 3640 mPictureListener = listener; 3641 } 3642 3643 /** 3644 * {@hide} 3645 */ 3646 /* FIXME: Debug only! Remove for SDK! */ 3647 public void externalRepresentation(Message callback) { 3648 mWebViewCore.sendMessage(EventHub.REQUEST_EXT_REPRESENTATION, callback); 3649 } 3650 3651 /** 3652 * {@hide} 3653 */ 3654 /* FIXME: Debug only! Remove for SDK! */ 3655 public void documentAsText(Message callback) { 3656 mWebViewCore.sendMessage(EventHub.REQUEST_DOC_AS_TEXT, callback); 3657 } 3658 3659 /** 3660 * Use this function to bind an object to JavaScript so that the 3661 * methods can be accessed from JavaScript. 3662 * <p><strong>IMPORTANT:</strong> 3663 * <ul> 3664 * <li> Using addJavascriptInterface() allows JavaScript to control your 3665 * application. This can be a very useful feature or a dangerous security 3666 * issue. When the HTML in the WebView is untrustworthy (for example, part 3667 * or all of the HTML is provided by some person or process), then an 3668 * attacker could inject HTML that will execute your code and possibly any 3669 * code of the attacker's choosing.<br> 3670 * Do not use addJavascriptInterface() unless all of the HTML in this 3671 * WebView was written by you.</li> 3672 * <li> The Java object that is bound runs in another thread and not in 3673 * the thread that it was constructed in.</li> 3674 * </ul></p> 3675 * @param obj The class instance to bind to JavaScript, null instances are 3676 * ignored. 3677 * @param interfaceName The name to used to expose the instance in 3678 * JavaScript. 3679 */ 3680 public void addJavascriptInterface(Object obj, String interfaceName) { 3681 if (obj == null) { 3682 return; 3683 } 3684 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3685 arg.mObject = obj; 3686 arg.mInterfaceName = interfaceName; 3687 mWebViewCore.sendMessage(EventHub.ADD_JS_INTERFACE, arg); 3688 } 3689 3690 /** 3691 * Removes a previously added JavaScript interface with the given name. 3692 * @param interfaceName The name of the interface to remove. 3693 */ 3694 public void removeJavascriptInterface(String interfaceName) { 3695 if (mWebViewCore != null) { 3696 WebViewCore.JSInterfaceData arg = new WebViewCore.JSInterfaceData(); 3697 arg.mInterfaceName = interfaceName; 3698 mWebViewCore.sendMessage(EventHub.REMOVE_JS_INTERFACE, arg); 3699 } 3700 } 3701 3702 /** 3703 * Return the WebSettings object used to control the settings for this 3704 * WebView. 3705 * @return A WebSettings object that can be used to control this WebView's 3706 * settings. 3707 */ 3708 public WebSettings getSettings() { 3709 return (mWebViewCore != null) ? mWebViewCore.getSettings() : null; 3710 } 3711 3712 /** 3713 * Return the list of currently loaded plugins. 3714 * @return The list of currently loaded plugins. 3715 * 3716 * @hide 3717 * @deprecated This was used for Gears, which has been deprecated. 3718 */ 3719 @Deprecated 3720 public static synchronized PluginList getPluginList() { 3721 return new PluginList(); 3722 } 3723 3724 /** 3725 * @hide 3726 * @deprecated This was used for Gears, which has been deprecated. 3727 */ 3728 @Deprecated 3729 public void refreshPlugins(boolean reloadOpenPages) { } 3730 3731 //------------------------------------------------------------------------- 3732 // Override View methods 3733 //------------------------------------------------------------------------- 3734 3735 @Override 3736 protected void finalize() throws Throwable { 3737 try { 3738 destroy(); 3739 } finally { 3740 super.finalize(); 3741 } 3742 } 3743 3744 @Override 3745 protected boolean drawChild(Canvas canvas, View child, long drawingTime) { 3746 if (child == mTitleBar) { 3747 // When drawing the title bar, move it horizontally to always show 3748 // at the top of the WebView. 3749 mTitleBar.offsetLeftAndRight(mScrollX - mTitleBar.getLeft()); 3750 int newTop = 0; 3751 if (mTitleGravity == Gravity.NO_GRAVITY) { 3752 newTop = Math.min(0, mScrollY); 3753 } else if (mTitleGravity == Gravity.TOP) { 3754 newTop = mScrollY; 3755 } 3756 mTitleBar.setBottom(newTop + mTitleBar.getHeight()); 3757 mTitleBar.setTop(newTop); 3758 } 3759 return super.drawChild(canvas, child, drawingTime); 3760 } 3761 3762 private void drawContent(Canvas canvas) { 3763 // Update the buttons in the picture, so when we draw the picture 3764 // to the screen, they are in the correct state. 3765 // Tell the native side if user is a) touching the screen, 3766 // b) pressing the trackball down, or c) pressing the enter key 3767 // If the cursor is on a button, we need to draw it in the pressed 3768 // state. 3769 // If mNativeClass is 0, we should not reach here, so we do not 3770 // need to check it again. 3771 nativeRecordButtons(hasFocus() && hasWindowFocus(), 3772 mTouchMode == TOUCH_SHORTPRESS_START_MODE 3773 || mTrackballDown || mGotCenterDown, false); 3774 drawCoreAndCursorRing(canvas, mBackgroundColor, mDrawCursorRing); 3775 } 3776 3777 /** 3778 * Draw the background when beyond bounds 3779 * @param canvas Canvas to draw into 3780 */ 3781 private void drawOverScrollBackground(Canvas canvas) { 3782 if (mOverScrollBackground == null) { 3783 mOverScrollBackground = new Paint(); 3784 Bitmap bm = BitmapFactory.decodeResource( 3785 mContext.getResources(), 3786 com.android.internal.R.drawable.status_bar_background); 3787 mOverScrollBackground.setShader(new BitmapShader(bm, 3788 Shader.TileMode.REPEAT, Shader.TileMode.REPEAT)); 3789 mOverScrollBorder = new Paint(); 3790 mOverScrollBorder.setStyle(Paint.Style.STROKE); 3791 mOverScrollBorder.setStrokeWidth(0); 3792 mOverScrollBorder.setColor(0xffbbbbbb); 3793 } 3794 3795 int top = 0; 3796 int right = computeRealHorizontalScrollRange(); 3797 int bottom = top + computeRealVerticalScrollRange(); 3798 // first draw the background and anchor to the top of the view 3799 canvas.save(); 3800 canvas.translate(mScrollX, mScrollY); 3801 canvas.clipRect(-mScrollX, top - mScrollY, right - mScrollX, bottom 3802 - mScrollY, Region.Op.DIFFERENCE); 3803 canvas.drawPaint(mOverScrollBackground); 3804 canvas.restore(); 3805 // then draw the border 3806 canvas.drawRect(-1, top - 1, right, bottom, mOverScrollBorder); 3807 // next clip the region for the content 3808 canvas.clipRect(0, top, right, bottom); 3809 } 3810 3811 @Override 3812 protected void onDraw(Canvas canvas) { 3813 // if mNativeClass is 0, the WebView has been destroyed. Do nothing. 3814 if (mNativeClass == 0) { 3815 return; 3816 } 3817 3818 // if both mContentWidth and mContentHeight are 0, it means there is no 3819 // valid Picture passed to WebView yet. This can happen when WebView 3820 // just starts. Draw the background and return. 3821 if ((mContentWidth | mContentHeight) == 0 && mHistoryPicture == null) { 3822 canvas.drawColor(mBackgroundColor); 3823 return; 3824 } 3825 3826 if (canvas.isHardwareAccelerated()) { 3827 mZoomManager.setHardwareAccelerated(); 3828 } 3829 3830 int saveCount = canvas.save(); 3831 if (mInOverScrollMode && !getSettings() 3832 .getUseWebViewBackgroundForOverscrollBackground()) { 3833 drawOverScrollBackground(canvas); 3834 } 3835 if (mTitleBar != null) { 3836 canvas.translate(0, getTitleHeight()); 3837 } 3838 drawContent(canvas); 3839 canvas.restoreToCount(saveCount); 3840 3841 if (AUTO_REDRAW_HACK && mAutoRedraw) { 3842 invalidate(); 3843 } 3844 if (inEditingMode()) { 3845 mWebTextView.onDrawSubstitute(); 3846 } 3847 mWebViewCore.signalRepaintDone(); 3848 3849 if (mOverScrollGlow != null && mOverScrollGlow.drawEdgeGlows(canvas)) { 3850 invalidate(); 3851 } 3852 3853 // paint the highlight in the end 3854 if (!mTouchHighlightRegion.isEmpty()) { 3855 if (mTouchHightlightPaint == null) { 3856 mTouchHightlightPaint = new Paint(); 3857 mTouchHightlightPaint.setColor(mHightlightColor); 3858 mTouchHightlightPaint.setAntiAlias(true); 3859 mTouchHightlightPaint.setPathEffect(new CornerPathEffect( 3860 TOUCH_HIGHLIGHT_ARC)); 3861 } 3862 canvas.drawPath(mTouchHighlightRegion.getBoundaryPath(), 3863 mTouchHightlightPaint); 3864 } 3865 if (DEBUG_TOUCH_HIGHLIGHT) { 3866 if (getSettings().getNavDump()) { 3867 if ((mTouchHighlightX | mTouchHighlightY) != 0) { 3868 if (mTouchCrossHairColor == null) { 3869 mTouchCrossHairColor = new Paint(); 3870 mTouchCrossHairColor.setColor(Color.RED); 3871 } 3872 canvas.drawLine(mTouchHighlightX - mNavSlop, 3873 mTouchHighlightY - mNavSlop, mTouchHighlightX 3874 + mNavSlop + 1, mTouchHighlightY + mNavSlop 3875 + 1, mTouchCrossHairColor); 3876 canvas.drawLine(mTouchHighlightX + mNavSlop + 1, 3877 mTouchHighlightY - mNavSlop, mTouchHighlightX 3878 - mNavSlop, 3879 mTouchHighlightY + mNavSlop + 1, 3880 mTouchCrossHairColor); 3881 } 3882 } 3883 } 3884 } 3885 3886 private void removeTouchHighlight(boolean removePendingMessage) { 3887 if (removePendingMessage) { 3888 mWebViewCore.removeMessages(EventHub.GET_TOUCH_HIGHLIGHT_RECTS); 3889 } 3890 mWebViewCore.sendMessage(EventHub.REMOVE_TOUCH_HIGHLIGHT_RECTS); 3891 } 3892 3893 @Override 3894 public void setLayoutParams(ViewGroup.LayoutParams params) { 3895 if (params.height == LayoutParams.WRAP_CONTENT) { 3896 mWrapContent = true; 3897 } 3898 super.setLayoutParams(params); 3899 } 3900 3901 @Override 3902 public boolean performLongClick() { 3903 // performLongClick() is the result of a delayed message. If we switch 3904 // to windows overview, the WebView will be temporarily removed from the 3905 // view system. In that case, do nothing. 3906 if (getParent() == null) return false; 3907 3908 // A multi-finger gesture can look like a long press; make sure we don't take 3909 // long press actions if we're scaling. 3910 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 3911 if (detector != null && detector.isInProgress()) { 3912 return false; 3913 } 3914 3915 if (mNativeClass != 0 && nativeCursorIsTextInput()) { 3916 // Send the click so that the textfield is in focus 3917 centerKeyPressOnTextField(); 3918 rebuildWebTextView(); 3919 } else { 3920 clearTextEntry(); 3921 } 3922 if (inEditingMode()) { 3923 // Since we just called rebuildWebTextView, the layout is not set 3924 // properly. Update it so it can correctly find the word to select. 3925 mWebTextView.ensureLayout(); 3926 // Provide a touch down event to WebTextView, which will allow it 3927 // to store the location to use in performLongClick. 3928 AbsoluteLayout.LayoutParams params 3929 = (AbsoluteLayout.LayoutParams) mWebTextView.getLayoutParams(); 3930 MotionEvent fake = MotionEvent.obtain(mLastTouchTime, 3931 mLastTouchTime, MotionEvent.ACTION_DOWN, 3932 mLastTouchX - params.x + mScrollX, 3933 mLastTouchY - params.y + mScrollY, 0); 3934 mWebTextView.dispatchTouchEvent(fake); 3935 return mWebTextView.performLongClick(); 3936 } 3937 if (mSelectingText) return false; // long click does nothing on selection 3938 /* if long click brings up a context menu, the super function 3939 * returns true and we're done. Otherwise, nothing happened when 3940 * the user clicked. */ 3941 if (super.performLongClick()) { 3942 return true; 3943 } 3944 /* In the case where the application hasn't already handled the long 3945 * click action, look for a word under the click. If one is found, 3946 * animate the text selection into view. 3947 * FIXME: no animation code yet */ 3948 return selectText(); 3949 } 3950 3951 /** 3952 * Select the word at the last click point. 3953 * 3954 * @hide pending API council approval 3955 */ 3956 public boolean selectText() { 3957 int x = viewToContentX(mLastTouchX + mScrollX); 3958 int y = viewToContentY(mLastTouchY + mScrollY); 3959 return selectText(x, y); 3960 } 3961 3962 /** 3963 * Select the word at the indicated content coordinates. 3964 */ 3965 boolean selectText(int x, int y) { 3966 if (!setUpSelect(true, x, y)) { 3967 return false; 3968 } 3969 nativeSetExtendSelection(); 3970 mDrawSelectionPointer = false; 3971 mSelectionStarted = true; 3972 mTouchMode = TOUCH_DRAG_MODE; 3973 return true; 3974 } 3975 3976 private int mOrientation = Configuration.ORIENTATION_UNDEFINED; 3977 3978 @Override 3979 protected void onConfigurationChanged(Configuration newConfig) { 3980 if (mSelectingText && mOrientation != newConfig.orientation) { 3981 selectionDone(); 3982 } 3983 mOrientation = newConfig.orientation; 3984 } 3985 3986 /** 3987 * Keep track of the Callback so we can end its ActionMode or remove its 3988 * titlebar. 3989 */ 3990 private SelectActionModeCallback mSelectCallback; 3991 3992 // These values are possible options for didUpdateWebTextViewDimensions. 3993 private static final int FULLY_ON_SCREEN = 0; 3994 private static final int INTERSECTS_SCREEN = 1; 3995 private static final int ANYWHERE = 2; 3996 3997 /** 3998 * Check to see if the focused textfield/textarea is still on screen. If it 3999 * is, update the the dimensions and location of WebTextView. Otherwise, 4000 * remove the WebTextView. Should be called when the zoom level changes. 4001 * @param intersection How to determine whether the textfield/textarea is 4002 * still on screen. 4003 * @return boolean True if the textfield/textarea is still on screen and the 4004 * dimensions/location of WebTextView have been updated. 4005 */ 4006 private boolean didUpdateWebTextViewDimensions(int intersection) { 4007 Rect contentBounds = nativeFocusCandidateNodeBounds(); 4008 Rect vBox = contentToViewRect(contentBounds); 4009 Rect visibleRect = new Rect(); 4010 calcOurVisibleRect(visibleRect); 4011 // If the textfield is on screen, place the WebTextView in 4012 // its new place, accounting for our new scroll/zoom values, 4013 // and adjust its textsize. 4014 boolean onScreen; 4015 switch (intersection) { 4016 case FULLY_ON_SCREEN: 4017 onScreen = visibleRect.contains(vBox); 4018 break; 4019 case INTERSECTS_SCREEN: 4020 onScreen = Rect.intersects(visibleRect, vBox); 4021 break; 4022 case ANYWHERE: 4023 onScreen = true; 4024 break; 4025 default: 4026 throw new AssertionError( 4027 "invalid parameter passed to didUpdateWebTextViewDimensions"); 4028 } 4029 if (onScreen) { 4030 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), 4031 vBox.height()); 4032 mWebTextView.updateTextSize(); 4033 updateWebTextViewPadding(); 4034 return true; 4035 } else { 4036 // The textfield is now off screen. The user probably 4037 // was not zooming to see the textfield better. Remove 4038 // the WebTextView. If the user types a key, and the 4039 // textfield is still in focus, we will reconstruct 4040 // the WebTextView and scroll it back on screen. 4041 mWebTextView.remove(); 4042 return false; 4043 } 4044 } 4045 4046 void setBaseLayer(int layer, Region invalRegion, boolean showVisualIndicator, 4047 boolean isPictureAfterFirstLayout) { 4048 if (mNativeClass == 0) 4049 return; 4050 nativeSetBaseLayer(layer, invalRegion, showVisualIndicator, 4051 isPictureAfterFirstLayout); 4052 if (mHTML5VideoViewProxy != null) { 4053 mHTML5VideoViewProxy.setBaseLayer(layer); 4054 } 4055 } 4056 4057 private void onZoomAnimationStart() { 4058 // If it is in password mode, turn it off so it does not draw misplaced. 4059 if (inEditingMode() && nativeFocusCandidateIsPassword()) { 4060 mWebTextView.setInPassword(false); 4061 } 4062 } 4063 4064 private void onZoomAnimationEnd() { 4065 // adjust the edit text view if needed 4066 if (inEditingMode() && didUpdateWebTextViewDimensions(FULLY_ON_SCREEN) 4067 && nativeFocusCandidateIsPassword()) { 4068 // If it is a password field, start drawing the WebTextView once 4069 // again. 4070 mWebTextView.setInPassword(true); 4071 } 4072 } 4073 4074 void onFixedLengthZoomAnimationStart() { 4075 WebViewCore.pauseUpdatePicture(getWebViewCore()); 4076 onZoomAnimationStart(); 4077 } 4078 4079 void onFixedLengthZoomAnimationEnd() { 4080 if (!mSelectingText) { 4081 WebViewCore.resumeUpdatePicture(mWebViewCore); 4082 } 4083 onZoomAnimationEnd(); 4084 } 4085 4086 private static final int ZOOM_BITS = Paint.FILTER_BITMAP_FLAG | 4087 Paint.DITHER_FLAG | 4088 Paint.SUBPIXEL_TEXT_FLAG; 4089 private static final int SCROLL_BITS = Paint.FILTER_BITMAP_FLAG | 4090 Paint.DITHER_FLAG; 4091 4092 private final DrawFilter mZoomFilter = 4093 new PaintFlagsDrawFilter(ZOOM_BITS, Paint.LINEAR_TEXT_FLAG); 4094 // If we need to trade better quality for speed, set mScrollFilter to null 4095 private final DrawFilter mScrollFilter = 4096 new PaintFlagsDrawFilter(SCROLL_BITS, 0); 4097 4098 private void drawCoreAndCursorRing(Canvas canvas, int color, 4099 boolean drawCursorRing) { 4100 if (mDrawHistory) { 4101 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4102 canvas.drawPicture(mHistoryPicture); 4103 return; 4104 } 4105 if (mNativeClass == 0) return; 4106 4107 boolean animateZoom = mZoomManager.isFixedLengthAnimationInProgress(); 4108 boolean animateScroll = ((!mScroller.isFinished() 4109 || mVelocityTracker != null) 4110 && (mTouchMode != TOUCH_DRAG_MODE || 4111 mHeldMotionless != MOTIONLESS_TRUE)) 4112 || mDeferTouchMode == TOUCH_DRAG_MODE; 4113 if (mTouchMode == TOUCH_DRAG_MODE) { 4114 if (mHeldMotionless == MOTIONLESS_PENDING) { 4115 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 4116 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 4117 mHeldMotionless = MOTIONLESS_FALSE; 4118 } 4119 if (mHeldMotionless == MOTIONLESS_FALSE) { 4120 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4121 .obtainMessage(DRAG_HELD_MOTIONLESS), MOTIONLESS_TIME); 4122 mHeldMotionless = MOTIONLESS_PENDING; 4123 } 4124 } 4125 if (animateZoom) { 4126 mZoomManager.animateZoom(canvas); 4127 } else if (!canvas.isHardwareAccelerated()) { 4128 canvas.scale(mZoomManager.getScale(), mZoomManager.getScale()); 4129 } 4130 4131 boolean UIAnimationsRunning = false; 4132 // Currently for each draw we compute the animation values; 4133 // We may in the future decide to do that independently. 4134 if (mNativeClass != 0 && nativeEvaluateLayersAnimations()) { 4135 UIAnimationsRunning = true; 4136 // If we have unfinished (or unstarted) animations, 4137 // we ask for a repaint. 4138 invalidate(); 4139 } 4140 4141 // decide which adornments to draw 4142 int extras = DRAW_EXTRAS_NONE; 4143 if (mFindIsUp) { 4144 extras = DRAW_EXTRAS_FIND; 4145 } else if (mSelectingText) { 4146 extras = DRAW_EXTRAS_SELECTION; 4147 nativeSetSelectionPointer(mDrawSelectionPointer, 4148 mZoomManager.getInvScale(), 4149 mSelectX, mSelectY - getTitleHeight()); 4150 } else if (drawCursorRing) { 4151 extras = DRAW_EXTRAS_CURSOR_RING; 4152 } 4153 if (DebugFlags.WEB_VIEW) { 4154 Log.v(LOGTAG, "mFindIsUp=" + mFindIsUp 4155 + " mSelectingText=" + mSelectingText 4156 + " nativePageShouldHandleShiftAndArrows()=" 4157 + nativePageShouldHandleShiftAndArrows() 4158 + " animateZoom=" + animateZoom 4159 + " extras=" + extras); 4160 } 4161 4162 if (canvas.isHardwareAccelerated()) { 4163 int functor = nativeGetDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 4164 mGLViewportEmpty ? null : mViewRectViewport, getScale(), extras); 4165 ((HardwareCanvas) canvas).callDrawGLFunction(functor); 4166 } else { 4167 DrawFilter df = null; 4168 if (mZoomManager.isZoomAnimating() || UIAnimationsRunning) { 4169 df = mZoomFilter; 4170 } else if (animateScroll) { 4171 df = mScrollFilter; 4172 } 4173 canvas.setDrawFilter(df); 4174 // XXX: Revisit splitting content. Right now it causes a 4175 // synchronization problem with layers. 4176 int content = nativeDraw(canvas, color, extras, false); 4177 canvas.setDrawFilter(null); 4178 if (content != 0) { 4179 mWebViewCore.sendMessage(EventHub.SPLIT_PICTURE_SET, content, 0); 4180 } 4181 } 4182 4183 if (extras == DRAW_EXTRAS_CURSOR_RING) { 4184 if (mTouchMode == TOUCH_SHORTPRESS_START_MODE) { 4185 mTouchMode = TOUCH_SHORTPRESS_MODE; 4186 } 4187 } 4188 if (mFocusSizeChanged) { 4189 mFocusSizeChanged = false; 4190 // If we are zooming, this will get handled above, when the zoom 4191 // finishes. We also do not need to do this unless the WebTextView 4192 // is showing. 4193 if (!animateZoom && inEditingMode()) { 4194 didUpdateWebTextViewDimensions(ANYWHERE); 4195 } 4196 } 4197 } 4198 4199 // draw history 4200 private boolean mDrawHistory = false; 4201 private Picture mHistoryPicture = null; 4202 private int mHistoryWidth = 0; 4203 private int mHistoryHeight = 0; 4204 4205 // Only check the flag, can be called from WebCore thread 4206 boolean drawHistory() { 4207 return mDrawHistory; 4208 } 4209 4210 int getHistoryPictureWidth() { 4211 return (mHistoryPicture != null) ? mHistoryPicture.getWidth() : 0; 4212 } 4213 4214 // Should only be called in UI thread 4215 void switchOutDrawHistory() { 4216 if (null == mWebViewCore) return; // CallbackProxy may trigger this 4217 if (mDrawHistory && (getProgress() == 100 || nativeHasContent())) { 4218 mDrawHistory = false; 4219 mHistoryPicture = null; 4220 invalidate(); 4221 int oldScrollX = mScrollX; 4222 int oldScrollY = mScrollY; 4223 mScrollX = pinLocX(mScrollX); 4224 mScrollY = pinLocY(mScrollY); 4225 if (oldScrollX != mScrollX || oldScrollY != mScrollY) { 4226 onScrollChanged(mScrollX, mScrollY, oldScrollX, oldScrollY); 4227 } else { 4228 sendOurVisibleRect(); 4229 } 4230 } 4231 } 4232 4233 WebViewCore.CursorData cursorData() { 4234 WebViewCore.CursorData result = new WebViewCore.CursorData(); 4235 result.mMoveGeneration = nativeMoveGeneration(); 4236 result.mFrame = nativeCursorFramePointer(); 4237 Point position = nativeCursorPosition(); 4238 result.mX = position.x; 4239 result.mY = position.y; 4240 return result; 4241 } 4242 4243 /** 4244 * Delete text from start to end in the focused textfield. If there is no 4245 * focus, or if start == end, silently fail. If start and end are out of 4246 * order, swap them. 4247 * @param start Beginning of selection to delete. 4248 * @param end End of selection to delete. 4249 */ 4250 /* package */ void deleteSelection(int start, int end) { 4251 mTextGeneration++; 4252 WebViewCore.TextSelectionData data 4253 = new WebViewCore.TextSelectionData(start, end); 4254 mWebViewCore.sendMessage(EventHub.DELETE_SELECTION, mTextGeneration, 0, 4255 data); 4256 } 4257 4258 /** 4259 * Set the selection to (start, end) in the focused textfield. If start and 4260 * end are out of order, swap them. 4261 * @param start Beginning of selection. 4262 * @param end End of selection. 4263 */ 4264 /* package */ void setSelection(int start, int end) { 4265 if (mWebViewCore != null) { 4266 mWebViewCore.sendMessage(EventHub.SET_SELECTION, start, end); 4267 } 4268 } 4269 4270 @Override 4271 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 4272 InputConnection connection = super.onCreateInputConnection(outAttrs); 4273 outAttrs.imeOptions |= EditorInfo.IME_FLAG_NO_FULLSCREEN; 4274 return connection; 4275 } 4276 4277 /** 4278 * Called in response to a message from webkit telling us that the soft 4279 * keyboard should be launched. 4280 */ 4281 private void displaySoftKeyboard(boolean isTextView) { 4282 InputMethodManager imm = (InputMethodManager) 4283 getContext().getSystemService(Context.INPUT_METHOD_SERVICE); 4284 4285 // bring it back to the default level scale so that user can enter text 4286 boolean zoom = mZoomManager.getScale() < mZoomManager.getDefaultScale(); 4287 if (zoom) { 4288 mZoomManager.setZoomCenter(mLastTouchX, mLastTouchY); 4289 mZoomManager.setZoomScale(mZoomManager.getDefaultScale(), false); 4290 } 4291 if (isTextView) { 4292 rebuildWebTextView(); 4293 if (inEditingMode()) { 4294 imm.showSoftInput(mWebTextView, 0, mWebTextView.getResultReceiver()); 4295 if (zoom) { 4296 didUpdateWebTextViewDimensions(INTERSECTS_SCREEN); 4297 } 4298 return; 4299 } 4300 } 4301 // Used by plugins and contentEditable. 4302 // Also used if the navigation cache is out of date, and 4303 // does not recognize that a textfield is in focus. In that 4304 // case, use WebView as the targeted view. 4305 // see http://b/issue?id=2457459 4306 imm.showSoftInput(this, 0); 4307 } 4308 4309 // Called by WebKit to instruct the UI to hide the keyboard 4310 private void hideSoftKeyboard() { 4311 InputMethodManager imm = InputMethodManager.peekInstance(); 4312 if (imm != null && (imm.isActive(this) 4313 || (inEditingMode() && imm.isActive(mWebTextView)))) { 4314 imm.hideSoftInputFromWindow(this.getWindowToken(), 0); 4315 } 4316 } 4317 4318 /* 4319 * This method checks the current focus and cursor and potentially rebuilds 4320 * mWebTextView to have the appropriate properties, such as password, 4321 * multiline, and what text it contains. It also removes it if necessary. 4322 */ 4323 /* package */ void rebuildWebTextView() { 4324 // If the WebView does not have focus, do nothing until it gains focus. 4325 if (!hasFocus() && (null == mWebTextView || !mWebTextView.hasFocus())) { 4326 return; 4327 } 4328 boolean alreadyThere = inEditingMode(); 4329 // inEditingMode can only return true if mWebTextView is non-null, 4330 // so we can safely call remove() if (alreadyThere) 4331 if (0 == mNativeClass || !nativeFocusCandidateIsTextInput()) { 4332 if (alreadyThere) { 4333 mWebTextView.remove(); 4334 } 4335 return; 4336 } 4337 // At this point, we know we have found an input field, so go ahead 4338 // and create the WebTextView if necessary. 4339 if (mWebTextView == null) { 4340 mWebTextView = new WebTextView(mContext, WebView.this, mAutoFillData.getQueryId()); 4341 // Initialize our generation number. 4342 mTextGeneration = 0; 4343 } 4344 mWebTextView.updateTextSize(); 4345 Rect visibleRect = new Rect(); 4346 calcOurContentVisibleRect(visibleRect); 4347 // Note that sendOurVisibleRect calls viewToContent, so the coordinates 4348 // should be in content coordinates. 4349 Rect bounds = nativeFocusCandidateNodeBounds(); 4350 Rect vBox = contentToViewRect(bounds); 4351 mWebTextView.setRect(vBox.left, vBox.top, vBox.width(), vBox.height()); 4352 if (!Rect.intersects(bounds, visibleRect)) { 4353 revealSelection(); 4354 } 4355 String text = nativeFocusCandidateText(); 4356 int nodePointer = nativeFocusCandidatePointer(); 4357 if (alreadyThere && mWebTextView.isSameTextField(nodePointer)) { 4358 // It is possible that we have the same textfield, but it has moved, 4359 // i.e. In the case of opening/closing the screen. 4360 // In that case, we need to set the dimensions, but not the other 4361 // aspects. 4362 // If the text has been changed by webkit, update it. However, if 4363 // there has been more UI text input, ignore it. We will receive 4364 // another update when that text is recognized. 4365 if (text != null && !text.equals(mWebTextView.getText().toString()) 4366 && nativeTextGeneration() == mTextGeneration) { 4367 mWebTextView.setTextAndKeepSelection(text); 4368 } 4369 } else { 4370 mWebTextView.setGravity(nativeFocusCandidateIsRtlText() ? 4371 Gravity.RIGHT : Gravity.NO_GRAVITY); 4372 // This needs to be called before setType, which may call 4373 // requestFormData, and it needs to have the correct nodePointer. 4374 mWebTextView.setNodePointer(nodePointer); 4375 mWebTextView.setType(nativeFocusCandidateType()); 4376 updateWebTextViewPadding(); 4377 if (null == text) { 4378 if (DebugFlags.WEB_VIEW) { 4379 Log.v(LOGTAG, "rebuildWebTextView null == text"); 4380 } 4381 text = ""; 4382 } 4383 mWebTextView.setTextAndKeepSelection(text); 4384 InputMethodManager imm = InputMethodManager.peekInstance(); 4385 if (imm != null && imm.isActive(mWebTextView)) { 4386 imm.restartInput(mWebTextView); 4387 } 4388 } 4389 if (isFocused()) { 4390 mWebTextView.requestFocus(); 4391 } 4392 } 4393 4394 /** 4395 * Update the padding of mWebTextView based on the native textfield/textarea 4396 */ 4397 void updateWebTextViewPadding() { 4398 Rect paddingRect = nativeFocusCandidatePaddingRect(); 4399 if (paddingRect != null) { 4400 // Use contentToViewDimension since these are the dimensions of 4401 // the padding. 4402 mWebTextView.setPadding( 4403 contentToViewDimension(paddingRect.left), 4404 contentToViewDimension(paddingRect.top), 4405 contentToViewDimension(paddingRect.right), 4406 contentToViewDimension(paddingRect.bottom)); 4407 } 4408 } 4409 4410 /** 4411 * Tell webkit to put the cursor on screen. 4412 */ 4413 /* package */ void revealSelection() { 4414 if (mWebViewCore != null) { 4415 mWebViewCore.sendMessage(EventHub.REVEAL_SELECTION); 4416 } 4417 } 4418 4419 /** 4420 * Called by WebTextView to find saved form data associated with the 4421 * textfield 4422 * @param name Name of the textfield. 4423 * @param nodePointer Pointer to the node of the textfield, so it can be 4424 * compared to the currently focused textfield when the data is 4425 * retrieved. 4426 * @param autoFillable true if WebKit has determined this field is part of 4427 * a form that can be auto filled. 4428 * @param autoComplete true if the attribute "autocomplete" is set to true 4429 * on the textfield. 4430 */ 4431 /* package */ void requestFormData(String name, int nodePointer, 4432 boolean autoFillable, boolean autoComplete) { 4433 if (mWebViewCore.getSettings().getSaveFormData()) { 4434 Message update = mPrivateHandler.obtainMessage(REQUEST_FORM_DATA); 4435 update.arg1 = nodePointer; 4436 RequestFormData updater = new RequestFormData(name, getUrl(), 4437 update, autoFillable, autoComplete); 4438 Thread t = new Thread(updater); 4439 t.start(); 4440 } 4441 } 4442 4443 /** 4444 * Pass a message to find out the <label> associated with the <input> 4445 * identified by nodePointer 4446 * @param framePointer Pointer to the frame containing the <input> node 4447 * @param nodePointer Pointer to the node for which a <label> is desired. 4448 */ 4449 /* package */ void requestLabel(int framePointer, int nodePointer) { 4450 mWebViewCore.sendMessage(EventHub.REQUEST_LABEL, framePointer, 4451 nodePointer); 4452 } 4453 4454 /* 4455 * This class requests an Adapter for the WebTextView which shows past 4456 * entries stored in the database. It is a Runnable so that it can be done 4457 * in its own thread, without slowing down the UI. 4458 */ 4459 private class RequestFormData implements Runnable { 4460 private String mName; 4461 private String mUrl; 4462 private Message mUpdateMessage; 4463 private boolean mAutoFillable; 4464 private boolean mAutoComplete; 4465 4466 public RequestFormData(String name, String url, Message msg, 4467 boolean autoFillable, boolean autoComplete) { 4468 mName = name; 4469 mUrl = url; 4470 mUpdateMessage = msg; 4471 mAutoFillable = autoFillable; 4472 mAutoComplete = autoComplete; 4473 } 4474 4475 public void run() { 4476 ArrayList<String> pastEntries = new ArrayList<String>(); 4477 4478 if (mAutoFillable) { 4479 // Note that code inside the adapter click handler in WebTextView depends 4480 // on the AutoFill item being at the top of the drop down list. If you change 4481 // the order, make sure to do it there too! 4482 WebSettings settings = getSettings(); 4483 if (settings != null && settings.getAutoFillProfile() != null) { 4484 pastEntries.add(getResources().getText( 4485 com.android.internal.R.string.autofill_this_form).toString() + 4486 " " + 4487 mAutoFillData.getPreviewString()); 4488 mWebTextView.setAutoFillProfileIsSet(true); 4489 } else { 4490 // There is no autofill profile set up yet, so add an option that 4491 // will invite the user to set their profile up. 4492 pastEntries.add(getResources().getText( 4493 com.android.internal.R.string.setup_autofill).toString()); 4494 mWebTextView.setAutoFillProfileIsSet(false); 4495 } 4496 } 4497 4498 if (mAutoComplete) { 4499 pastEntries.addAll(mDatabase.getFormData(mUrl, mName)); 4500 } 4501 4502 if (pastEntries.size() > 0) { 4503 AutoCompleteAdapter adapter = new 4504 AutoCompleteAdapter(mContext, pastEntries); 4505 mUpdateMessage.obj = adapter; 4506 mUpdateMessage.sendToTarget(); 4507 } 4508 } 4509 } 4510 4511 /** 4512 * Dump the display tree to "/sdcard/displayTree.txt" 4513 * 4514 * @hide debug only 4515 */ 4516 public void dumpDisplayTree() { 4517 nativeDumpDisplayTree(getUrl()); 4518 } 4519 4520 /** 4521 * Dump the dom tree to adb shell if "toFile" is False, otherwise dump it to 4522 * "/sdcard/domTree.txt" 4523 * 4524 * @hide debug only 4525 */ 4526 public void dumpDomTree(boolean toFile) { 4527 mWebViewCore.sendMessage(EventHub.DUMP_DOMTREE, toFile ? 1 : 0, 0); 4528 } 4529 4530 /** 4531 * Dump the render tree to adb shell if "toFile" is False, otherwise dump it 4532 * to "/sdcard/renderTree.txt" 4533 * 4534 * @hide debug only 4535 */ 4536 public void dumpRenderTree(boolean toFile) { 4537 mWebViewCore.sendMessage(EventHub.DUMP_RENDERTREE, toFile ? 1 : 0, 0); 4538 } 4539 4540 /** 4541 * Called by DRT on UI thread, need to proxy to WebCore thread. 4542 * 4543 * @hide debug only 4544 */ 4545 public void useMockDeviceOrientation() { 4546 mWebViewCore.sendMessage(EventHub.USE_MOCK_DEVICE_ORIENTATION); 4547 } 4548 4549 /** 4550 * Called by DRT on WebCore thread. 4551 * 4552 * @hide debug only 4553 */ 4554 public void setMockDeviceOrientation(boolean canProvideAlpha, double alpha, 4555 boolean canProvideBeta, double beta, boolean canProvideGamma, double gamma) { 4556 mWebViewCore.setMockDeviceOrientation(canProvideAlpha, alpha, canProvideBeta, beta, 4557 canProvideGamma, gamma); 4558 } 4559 4560 /** 4561 * Dump the V8 counters to standard output. 4562 * Note that you need a build with V8 and WEBCORE_INSTRUMENTATION set to 4563 * true. Otherwise, this will do nothing. 4564 * 4565 * @hide debug only 4566 */ 4567 public void dumpV8Counters() { 4568 mWebViewCore.sendMessage(EventHub.DUMP_V8COUNTERS); 4569 } 4570 4571 // This is used to determine long press with the center key. Does not 4572 // affect long press with the trackball/touch. 4573 private boolean mGotCenterDown = false; 4574 4575 @Override 4576 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 4577 // send complex characters to webkit for use by JS and plugins 4578 if (keyCode == KeyEvent.KEYCODE_UNKNOWN && event.getCharacters() != null) { 4579 // pass the key to DOM 4580 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4581 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4582 // return true as DOM handles the key 4583 return true; 4584 } 4585 return false; 4586 } 4587 4588 private boolean isEnterActionKey(int keyCode) { 4589 return keyCode == KeyEvent.KEYCODE_DPAD_CENTER 4590 || keyCode == KeyEvent.KEYCODE_ENTER 4591 || keyCode == KeyEvent.KEYCODE_NUMPAD_ENTER; 4592 } 4593 4594 @Override 4595 public boolean onKeyDown(int keyCode, KeyEvent event) { 4596 if (DebugFlags.WEB_VIEW) { 4597 Log.v(LOGTAG, "keyDown at " + System.currentTimeMillis() 4598 + "keyCode=" + keyCode 4599 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4600 } 4601 4602 // don't implement accelerator keys here; defer to host application 4603 if (event.isCtrlPressed()) { 4604 return false; 4605 } 4606 4607 if (mNativeClass == 0) { 4608 return false; 4609 } 4610 4611 // do this hack up front, so it always works, regardless of touch-mode 4612 if (AUTO_REDRAW_HACK && (keyCode == KeyEvent.KEYCODE_CALL)) { 4613 mAutoRedraw = !mAutoRedraw; 4614 if (mAutoRedraw) { 4615 invalidate(); 4616 } 4617 return true; 4618 } 4619 4620 // Bubble up the key event if 4621 // 1. it is a system key; or 4622 // 2. the host application wants to handle it; 4623 if (event.isSystem() 4624 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4625 return false; 4626 } 4627 4628 // accessibility support 4629 if (accessibilityScriptInjected()) { 4630 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4631 // if an accessibility script is injected we delegate to it the key handling. 4632 // this script is a screen reader which is a fully fledged solution for blind 4633 // users to navigate in and interact with web pages. 4634 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4635 return true; 4636 } else { 4637 // Clean up if accessibility was disabled after loading the current URL. 4638 mAccessibilityScriptInjected = false; 4639 } 4640 } else if (mAccessibilityInjector != null) { 4641 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4642 if (mAccessibilityInjector.onKeyEvent(event)) { 4643 // if an accessibility injector is present (no JavaScript enabled or the site 4644 // opts out injecting our JavaScript screen reader) we let it decide whether 4645 // to act on and consume the event. 4646 return true; 4647 } 4648 } else { 4649 // Clean up if accessibility was disabled after loading the current URL. 4650 mAccessibilityInjector = null; 4651 } 4652 } 4653 4654 if (keyCode == KeyEvent.KEYCODE_PAGE_UP) { 4655 if (event.hasNoModifiers()) { 4656 pageUp(false); 4657 return true; 4658 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4659 pageUp(true); 4660 return true; 4661 } 4662 } 4663 4664 if (keyCode == KeyEvent.KEYCODE_PAGE_DOWN) { 4665 if (event.hasNoModifiers()) { 4666 pageDown(false); 4667 return true; 4668 } else if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4669 pageDown(true); 4670 return true; 4671 } 4672 } 4673 4674 if (keyCode == KeyEvent.KEYCODE_MOVE_HOME && event.hasNoModifiers()) { 4675 pageUp(true); 4676 return true; 4677 } 4678 4679 if (keyCode == KeyEvent.KEYCODE_MOVE_END && event.hasNoModifiers()) { 4680 pageDown(true); 4681 return true; 4682 } 4683 4684 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4685 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4686 switchOutDrawHistory(); 4687 if (nativePageShouldHandleShiftAndArrows()) { 4688 letPageHandleNavKey(keyCode, event.getEventTime(), true, event.getMetaState()); 4689 return true; 4690 } 4691 if (event.hasModifiers(KeyEvent.META_ALT_ON)) { 4692 switch (keyCode) { 4693 case KeyEvent.KEYCODE_DPAD_UP: 4694 pageUp(true); 4695 return true; 4696 case KeyEvent.KEYCODE_DPAD_DOWN: 4697 pageDown(true); 4698 return true; 4699 case KeyEvent.KEYCODE_DPAD_LEFT: 4700 nativeClearCursor(); // start next trackball movement from page edge 4701 return pinScrollTo(0, mScrollY, true, 0); 4702 case KeyEvent.KEYCODE_DPAD_RIGHT: 4703 nativeClearCursor(); // start next trackball movement from page edge 4704 return pinScrollTo(mContentWidth, mScrollY, true, 0); 4705 } 4706 } 4707 if (mSelectingText) { 4708 int xRate = keyCode == KeyEvent.KEYCODE_DPAD_LEFT 4709 ? -1 : keyCode == KeyEvent.KEYCODE_DPAD_RIGHT ? 1 : 0; 4710 int yRate = keyCode == KeyEvent.KEYCODE_DPAD_UP ? 4711 -1 : keyCode == KeyEvent.KEYCODE_DPAD_DOWN ? 1 : 0; 4712 int multiplier = event.getRepeatCount() + 1; 4713 moveSelection(xRate * multiplier, yRate * multiplier); 4714 return true; 4715 } 4716 if (navHandledKey(keyCode, 1, false, event.getEventTime())) { 4717 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 4718 return true; 4719 } 4720 // Bubble up the key event as WebView doesn't handle it 4721 return false; 4722 } 4723 4724 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) { 4725 switchOutDrawHistory(); 4726 boolean wantsKeyEvents = nativeCursorNodePointer() == 0 4727 || nativeCursorWantsKeyEvents(); 4728 if (event.getRepeatCount() == 0) { 4729 if (mSelectingText) { 4730 return true; // discard press if copy in progress 4731 } 4732 mGotCenterDown = true; 4733 mPrivateHandler.sendMessageDelayed(mPrivateHandler 4734 .obtainMessage(LONG_PRESS_CENTER), LONG_PRESS_TIMEOUT); 4735 // Already checked mNativeClass, so we do not need to check it 4736 // again. 4737 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 4738 if (!wantsKeyEvents) return true; 4739 } 4740 // Bubble up the key event as WebView doesn't handle it 4741 if (!wantsKeyEvents) return false; 4742 } 4743 4744 if (getSettings().getNavDump()) { 4745 switch (keyCode) { 4746 case KeyEvent.KEYCODE_4: 4747 dumpDisplayTree(); 4748 break; 4749 case KeyEvent.KEYCODE_5: 4750 case KeyEvent.KEYCODE_6: 4751 dumpDomTree(keyCode == KeyEvent.KEYCODE_5); 4752 break; 4753 case KeyEvent.KEYCODE_7: 4754 case KeyEvent.KEYCODE_8: 4755 dumpRenderTree(keyCode == KeyEvent.KEYCODE_7); 4756 break; 4757 case KeyEvent.KEYCODE_9: 4758 nativeInstrumentReport(); 4759 return true; 4760 } 4761 } 4762 4763 if (nativeCursorIsTextInput()) { 4764 // This message will put the node in focus, for the DOM's notion 4765 // of focus. 4766 mWebViewCore.sendMessage(EventHub.FAKE_CLICK, nativeCursorFramePointer(), 4767 nativeCursorNodePointer()); 4768 // This will bring up the WebTextView and put it in focus, for 4769 // our view system's notion of focus 4770 rebuildWebTextView(); 4771 // Now we need to pass the event to it 4772 if (inEditingMode()) { 4773 mWebTextView.setDefaultSelection(); 4774 return mWebTextView.dispatchKeyEvent(event); 4775 } 4776 } else if (nativeHasFocusNode()) { 4777 // In this case, the cursor is not on a text input, but the focus 4778 // might be. Check it, and if so, hand over to the WebTextView. 4779 rebuildWebTextView(); 4780 if (inEditingMode()) { 4781 mWebTextView.setDefaultSelection(); 4782 return mWebTextView.dispatchKeyEvent(event); 4783 } 4784 } 4785 4786 // TODO: should we pass all the keys to DOM or check the meta tag 4787 if (nativeCursorWantsKeyEvents() || true) { 4788 // pass the key to DOM 4789 mWebViewCore.sendMessage(EventHub.KEY_DOWN, event); 4790 // return true as DOM handles the key 4791 return true; 4792 } 4793 4794 // Bubble up the key event as WebView doesn't handle it 4795 return false; 4796 } 4797 4798 @Override 4799 public boolean onKeyUp(int keyCode, KeyEvent event) { 4800 if (DebugFlags.WEB_VIEW) { 4801 Log.v(LOGTAG, "keyUp at " + System.currentTimeMillis() 4802 + ", " + event + ", unicode=" + event.getUnicodeChar()); 4803 } 4804 4805 if (mNativeClass == 0) { 4806 return false; 4807 } 4808 4809 // special CALL handling when cursor node's href is "tel:XXX" 4810 if (keyCode == KeyEvent.KEYCODE_CALL && nativeHasCursorNode()) { 4811 String text = nativeCursorText(); 4812 if (!nativeCursorIsTextInput() && text != null 4813 && text.startsWith(SCHEME_TEL)) { 4814 Intent intent = new Intent(Intent.ACTION_DIAL, Uri.parse(text)); 4815 getContext().startActivity(intent); 4816 return true; 4817 } 4818 } 4819 4820 // Bubble up the key event if 4821 // 1. it is a system key; or 4822 // 2. the host application wants to handle it; 4823 if (event.isSystem() 4824 || mCallbackProxy.uiOverrideKeyEvent(event)) { 4825 return false; 4826 } 4827 4828 // accessibility support 4829 if (accessibilityScriptInjected()) { 4830 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4831 // if an accessibility script is injected we delegate to it the key handling. 4832 // this script is a screen reader which is a fully fledged solution for blind 4833 // users to navigate in and interact with web pages. 4834 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4835 return true; 4836 } else { 4837 // Clean up if accessibility was disabled after loading the current URL. 4838 mAccessibilityScriptInjected = false; 4839 } 4840 } else if (mAccessibilityInjector != null) { 4841 if (AccessibilityManager.getInstance(mContext).isEnabled()) { 4842 if (mAccessibilityInjector.onKeyEvent(event)) { 4843 // if an accessibility injector is present (no JavaScript enabled or the site 4844 // opts out injecting our JavaScript screen reader) we let it decide whether to 4845 // act on and consume the event. 4846 return true; 4847 } 4848 } else { 4849 // Clean up if accessibility was disabled after loading the current URL. 4850 mAccessibilityInjector = null; 4851 } 4852 } 4853 4854 if (keyCode >= KeyEvent.KEYCODE_DPAD_UP 4855 && keyCode <= KeyEvent.KEYCODE_DPAD_RIGHT) { 4856 if (nativePageShouldHandleShiftAndArrows()) { 4857 letPageHandleNavKey(keyCode, event.getEventTime(), false, event.getMetaState()); 4858 return true; 4859 } 4860 // always handle the navigation keys in the UI thread 4861 // Bubble up the key event as WebView doesn't handle it 4862 return false; 4863 } 4864 4865 if (isEnterActionKey(keyCode)) { 4866 // remove the long press message first 4867 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 4868 mGotCenterDown = false; 4869 4870 if (mSelectingText) { 4871 if (mExtendSelection) { 4872 copySelection(); 4873 selectionDone(); 4874 } else { 4875 mExtendSelection = true; 4876 nativeSetExtendSelection(); 4877 invalidate(); // draw the i-beam instead of the arrow 4878 } 4879 return true; // discard press if copy in progress 4880 } 4881 4882 // perform the single click 4883 Rect visibleRect = sendOurVisibleRect(); 4884 // Note that sendOurVisibleRect calls viewToContent, so the 4885 // coordinates should be in content coordinates. 4886 if (!nativeCursorIntersects(visibleRect)) { 4887 return false; 4888 } 4889 WebViewCore.CursorData data = cursorData(); 4890 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, data); 4891 playSoundEffect(SoundEffectConstants.CLICK); 4892 if (nativeCursorIsTextInput()) { 4893 rebuildWebTextView(); 4894 centerKeyPressOnTextField(); 4895 if (inEditingMode()) { 4896 mWebTextView.setDefaultSelection(); 4897 } 4898 return true; 4899 } 4900 clearTextEntry(); 4901 nativeShowCursorTimed(); 4902 if (mCallbackProxy.uiOverrideUrlLoading(nativeCursorText())) { 4903 return true; 4904 } 4905 if (nativeCursorNodePointer() != 0 && !nativeCursorWantsKeyEvents()) { 4906 mWebViewCore.sendMessage(EventHub.CLICK, data.mFrame, 4907 nativeCursorNodePointer()); 4908 return true; 4909 } 4910 } 4911 4912 // TODO: should we pass all the keys to DOM or check the meta tag 4913 if (nativeCursorWantsKeyEvents() || true) { 4914 // pass the key to DOM 4915 mWebViewCore.sendMessage(EventHub.KEY_UP, event); 4916 // return true as DOM handles the key 4917 return true; 4918 } 4919 4920 // Bubble up the key event as WebView doesn't handle it 4921 return false; 4922 } 4923 4924 /* 4925 * Enter selecting text mode, and see if CAB should be shown. 4926 * Returns true if the WebView is now in 4927 * selecting text mode (including if it was already in that mode, and this 4928 * method did nothing). 4929 */ 4930 private boolean setUpSelect(boolean selectWord, int x, int y) { 4931 if (0 == mNativeClass) return false; // client isn't initialized 4932 if (inFullScreenMode()) return false; 4933 if (mSelectingText) return true; 4934 nativeResetSelection(); 4935 if (selectWord && !nativeWordSelection(x, y)) { 4936 selectionDone(); 4937 return false; 4938 } 4939 mSelectCallback = new SelectActionModeCallback(); 4940 mSelectCallback.setWebView(this); 4941 if (startActionMode(mSelectCallback) == null) { 4942 // There is no ActionMode, so do not allow the user to modify a 4943 // selection. 4944 selectionDone(); 4945 return false; 4946 } 4947 mExtendSelection = false; 4948 mSelectingText = mDrawSelectionPointer = true; 4949 // don't let the picture change during text selection 4950 WebViewCore.pauseUpdatePicture(mWebViewCore); 4951 if (nativeHasCursorNode()) { 4952 Rect rect = nativeCursorNodeBounds(); 4953 mSelectX = contentToViewX(rect.left); 4954 mSelectY = contentToViewY(rect.top); 4955 } else if (mLastTouchY > getVisibleTitleHeight()) { 4956 mSelectX = mScrollX + mLastTouchX; 4957 mSelectY = mScrollY + mLastTouchY; 4958 } else { 4959 mSelectX = mScrollX + getViewWidth() / 2; 4960 mSelectY = mScrollY + getViewHeightWithTitle() / 2; 4961 } 4962 nativeHideCursor(); 4963 mMinAutoScrollX = 0; 4964 mMaxAutoScrollX = getViewWidth(); 4965 mMinAutoScrollY = 0; 4966 mMaxAutoScrollY = getViewHeightWithTitle(); 4967 mScrollingLayer = nativeScrollableLayer(viewToContentX(mSelectX), 4968 viewToContentY(mSelectY), mScrollingLayerRect, 4969 mScrollingLayerBounds); 4970 if (mScrollingLayer != 0) { 4971 if (mScrollingLayerRect.left != mScrollingLayerRect.right) { 4972 mMinAutoScrollX = Math.max(mMinAutoScrollX, 4973 contentToViewX(mScrollingLayerBounds.left)); 4974 mMaxAutoScrollX = Math.min(mMaxAutoScrollX, 4975 contentToViewX(mScrollingLayerBounds.right)); 4976 } 4977 if (mScrollingLayerRect.top != mScrollingLayerRect.bottom) { 4978 mMinAutoScrollY = Math.max(mMinAutoScrollY, 4979 contentToViewY(mScrollingLayerBounds.top)); 4980 mMaxAutoScrollY = Math.min(mMaxAutoScrollY, 4981 contentToViewY(mScrollingLayerBounds.bottom)); 4982 } 4983 } 4984 mMinAutoScrollX += SELECT_SCROLL; 4985 mMaxAutoScrollX -= SELECT_SCROLL; 4986 mMinAutoScrollY += SELECT_SCROLL; 4987 mMaxAutoScrollY -= SELECT_SCROLL; 4988 return true; 4989 } 4990 4991 /** 4992 * Use this method to put the WebView into text selection mode. 4993 * Do not rely on this functionality; it will be deprecated in the future. 4994 * @deprecated This method is now obsolete. 4995 */ 4996 @Deprecated 4997 public void emulateShiftHeld() { 4998 setUpSelect(false, 0, 0); 4999 } 5000 5001 /** 5002 * Select all of the text in this WebView. 5003 * 5004 * @hide pending API council approval. 5005 */ 5006 public void selectAll() { 5007 if (0 == mNativeClass) return; // client isn't initialized 5008 if (inFullScreenMode()) return; 5009 if (!mSelectingText) { 5010 // retrieve a point somewhere within the text 5011 Point select = nativeSelectableText(); 5012 if (!selectText(select.x, select.y)) return; 5013 } 5014 nativeSelectAll(); 5015 mDrawSelectionPointer = false; 5016 mExtendSelection = true; 5017 invalidate(); 5018 } 5019 5020 /** 5021 * Called when the selection has been removed. 5022 */ 5023 void selectionDone() { 5024 if (mSelectingText) { 5025 mSelectingText = false; 5026 // finish is idempotent, so this is fine even if selectionDone was 5027 // called by mSelectCallback.onDestroyActionMode 5028 mSelectCallback.finish(); 5029 mSelectCallback = null; 5030 WebViewCore.resumePriority(); 5031 WebViewCore.resumeUpdatePicture(mWebViewCore); 5032 invalidate(); // redraw without selection 5033 mAutoScrollX = 0; 5034 mAutoScrollY = 0; 5035 mSentAutoScrollMessage = false; 5036 } 5037 } 5038 5039 /** 5040 * Copy the selection to the clipboard 5041 * 5042 * @hide pending API council approval. 5043 */ 5044 public boolean copySelection() { 5045 boolean copiedSomething = false; 5046 String selection = getSelection(); 5047 if (selection != null && selection != "") { 5048 if (DebugFlags.WEB_VIEW) { 5049 Log.v(LOGTAG, "copySelection \"" + selection + "\""); 5050 } 5051 Toast.makeText(mContext 5052 , com.android.internal.R.string.text_copied 5053 , Toast.LENGTH_SHORT).show(); 5054 copiedSomething = true; 5055 ClipboardManager cm = (ClipboardManager)getContext() 5056 .getSystemService(Context.CLIPBOARD_SERVICE); 5057 cm.setText(selection); 5058 } 5059 invalidate(); // remove selection region and pointer 5060 return copiedSomething; 5061 } 5062 5063 /** 5064 * @hide pending API Council approval. 5065 */ 5066 public SearchBox getSearchBox() { 5067 if ((mWebViewCore == null) || (mWebViewCore.getBrowserFrame() == null)) { 5068 return null; 5069 } 5070 return mWebViewCore.getBrowserFrame().getSearchBox(); 5071 } 5072 5073 /** 5074 * Returns the currently highlighted text as a string. 5075 */ 5076 String getSelection() { 5077 if (mNativeClass == 0) return ""; 5078 return nativeGetSelection(); 5079 } 5080 5081 @Override 5082 protected void onAttachedToWindow() { 5083 super.onAttachedToWindow(); 5084 if (hasWindowFocus()) setActive(true); 5085 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5086 if (mGlobalLayoutListener == null) { 5087 mGlobalLayoutListener = new InnerGlobalLayoutListener(); 5088 treeObserver.addOnGlobalLayoutListener(mGlobalLayoutListener); 5089 } 5090 if (mScrollChangedListener == null) { 5091 mScrollChangedListener = new InnerScrollChangedListener(); 5092 treeObserver.addOnScrollChangedListener(mScrollChangedListener); 5093 } 5094 5095 addAccessibilityApisToJavaScript(); 5096 5097 mTouchEventQueue.reset(); 5098 } 5099 5100 @Override 5101 protected void onDetachedFromWindow() { 5102 clearHelpers(); 5103 mZoomManager.dismissZoomPicker(); 5104 if (hasWindowFocus()) setActive(false); 5105 5106 final ViewTreeObserver treeObserver = getViewTreeObserver(); 5107 if (mGlobalLayoutListener != null) { 5108 treeObserver.removeGlobalOnLayoutListener(mGlobalLayoutListener); 5109 mGlobalLayoutListener = null; 5110 } 5111 if (mScrollChangedListener != null) { 5112 treeObserver.removeOnScrollChangedListener(mScrollChangedListener); 5113 mScrollChangedListener = null; 5114 } 5115 5116 removeAccessibilityApisFromJavaScript(); 5117 5118 super.onDetachedFromWindow(); 5119 } 5120 5121 @Override 5122 protected void onVisibilityChanged(View changedView, int visibility) { 5123 super.onVisibilityChanged(changedView, visibility); 5124 // The zoomManager may be null if the webview is created from XML that 5125 // specifies the view's visibility param as not visible (see http://b/2794841) 5126 if (visibility != View.VISIBLE && mZoomManager != null) { 5127 mZoomManager.dismissZoomPicker(); 5128 } 5129 } 5130 5131 /** 5132 * @deprecated WebView no longer needs to implement 5133 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5134 */ 5135 @Deprecated 5136 public void onChildViewAdded(View parent, View child) {} 5137 5138 /** 5139 * @deprecated WebView no longer needs to implement 5140 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 5141 */ 5142 @Deprecated 5143 public void onChildViewRemoved(View p, View child) {} 5144 5145 /** 5146 * @deprecated WebView should not have implemented 5147 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 5148 */ 5149 @Deprecated 5150 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 5151 } 5152 5153 void setActive(boolean active) { 5154 if (active) { 5155 if (hasFocus()) { 5156 // If our window regained focus, and we have focus, then begin 5157 // drawing the cursor ring 5158 mDrawCursorRing = true; 5159 setFocusControllerActive(true); 5160 if (mNativeClass != 0) { 5161 nativeRecordButtons(true, false, true); 5162 } 5163 } else { 5164 if (!inEditingMode()) { 5165 // If our window gained focus, but we do not have it, do not 5166 // draw the cursor ring. 5167 mDrawCursorRing = false; 5168 setFocusControllerActive(false); 5169 } 5170 // We do not call nativeRecordButtons here because we assume 5171 // that when we lost focus, or window focus, it got called with 5172 // false for the first parameter 5173 } 5174 } else { 5175 if (!mZoomManager.isZoomPickerVisible()) { 5176 /* 5177 * The external zoom controls come in their own window, so our 5178 * window loses focus. Our policy is to not draw the cursor ring 5179 * if our window is not focused, but this is an exception since 5180 * the user can still navigate the web page with the zoom 5181 * controls showing. 5182 */ 5183 mDrawCursorRing = false; 5184 } 5185 mKeysPressed.clear(); 5186 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5187 mTouchMode = TOUCH_DONE_MODE; 5188 if (mNativeClass != 0) { 5189 nativeRecordButtons(false, false, true); 5190 } 5191 setFocusControllerActive(false); 5192 } 5193 invalidate(); 5194 } 5195 5196 // To avoid drawing the cursor ring, and remove the TextView when our window 5197 // loses focus. 5198 @Override 5199 public void onWindowFocusChanged(boolean hasWindowFocus) { 5200 setActive(hasWindowFocus); 5201 if (hasWindowFocus) { 5202 JWebCoreJavaBridge.setActiveWebView(this); 5203 } else { 5204 JWebCoreJavaBridge.removeActiveWebView(this); 5205 } 5206 super.onWindowFocusChanged(hasWindowFocus); 5207 } 5208 5209 /* 5210 * Pass a message to WebCore Thread, telling the WebCore::Page's 5211 * FocusController to be "inactive" so that it will 5212 * not draw the blinking cursor. It gets set to "active" to draw the cursor 5213 * in WebViewCore.cpp, when the WebCore thread receives key events/clicks. 5214 */ 5215 /* package */ void setFocusControllerActive(boolean active) { 5216 if (mWebViewCore == null) return; 5217 mWebViewCore.sendMessage(EventHub.SET_ACTIVE, active ? 1 : 0, 0); 5218 // Need to send this message after the document regains focus. 5219 if (active && mListBoxMessage != null) { 5220 mWebViewCore.sendMessage(mListBoxMessage); 5221 mListBoxMessage = null; 5222 } 5223 } 5224 5225 @Override 5226 protected void onFocusChanged(boolean focused, int direction, 5227 Rect previouslyFocusedRect) { 5228 if (DebugFlags.WEB_VIEW) { 5229 Log.v(LOGTAG, "MT focusChanged " + focused + ", " + direction); 5230 } 5231 if (focused) { 5232 // When we regain focus, if we have window focus, resume drawing 5233 // the cursor ring 5234 if (hasWindowFocus()) { 5235 mDrawCursorRing = true; 5236 if (mNativeClass != 0) { 5237 nativeRecordButtons(true, false, true); 5238 } 5239 setFocusControllerActive(true); 5240 //} else { 5241 // The WebView has gained focus while we do not have 5242 // windowfocus. When our window lost focus, we should have 5243 // called nativeRecordButtons(false...) 5244 } 5245 } else { 5246 // When we lost focus, unless focus went to the TextView (which is 5247 // true if we are in editing mode), stop drawing the cursor ring. 5248 if (!inEditingMode()) { 5249 mDrawCursorRing = false; 5250 if (mNativeClass != 0) { 5251 nativeRecordButtons(false, false, true); 5252 } 5253 setFocusControllerActive(false); 5254 } 5255 mKeysPressed.clear(); 5256 } 5257 5258 super.onFocusChanged(focused, direction, previouslyFocusedRect); 5259 } 5260 5261 void setGLRectViewport() { 5262 // Use the getGlobalVisibleRect() to get the intersection among the parents 5263 // visible == false means we're clipped - send a null rect down to indicate that 5264 // we should not draw 5265 boolean visible = getGlobalVisibleRect(mGLRectViewport); 5266 if (visible) { 5267 // Then need to invert the Y axis, just for GL 5268 View rootView = getRootView(); 5269 int rootViewHeight = rootView.getHeight(); 5270 mViewRectViewport.set(mGLRectViewport); 5271 int savedWebViewBottom = mGLRectViewport.bottom; 5272 mGLRectViewport.bottom = rootViewHeight - mGLRectViewport.top - getVisibleTitleHeight(); 5273 mGLRectViewport.top = rootViewHeight - savedWebViewBottom; 5274 mGLViewportEmpty = false; 5275 } else { 5276 mGLViewportEmpty = true; 5277 } 5278 nativeUpdateDrawGLFunction(mGLViewportEmpty ? null : mGLRectViewport, 5279 mGLViewportEmpty ? null : mViewRectViewport); 5280 } 5281 5282 /** 5283 * @hide 5284 */ 5285 @Override 5286 protected boolean setFrame(int left, int top, int right, int bottom) { 5287 boolean changed = super.setFrame(left, top, right, bottom); 5288 if (!changed && mHeightCanMeasure) { 5289 // When mHeightCanMeasure is true, we will set mLastHeightSent to 0 5290 // in WebViewCore after we get the first layout. We do call 5291 // requestLayout() when we get contentSizeChanged(). But the View 5292 // system won't call onSizeChanged if the dimension is not changed. 5293 // In this case, we need to call sendViewSizeZoom() explicitly to 5294 // notify the WebKit about the new dimensions. 5295 sendViewSizeZoom(false); 5296 } 5297 setGLRectViewport(); 5298 return changed; 5299 } 5300 5301 @Override 5302 protected void onSizeChanged(int w, int h, int ow, int oh) { 5303 super.onSizeChanged(w, h, ow, oh); 5304 5305 // adjust the max viewport width depending on the view dimensions. This 5306 // is to ensure the scaling is not going insane. So do not shrink it if 5307 // the view size is temporarily smaller, e.g. when soft keyboard is up. 5308 int newMaxViewportWidth = (int) (Math.max(w, h) / mZoomManager.getDefaultMinZoomScale()); 5309 if (newMaxViewportWidth > sMaxViewportWidth) { 5310 sMaxViewportWidth = newMaxViewportWidth; 5311 } 5312 5313 mZoomManager.onSizeChanged(w, h, ow, oh); 5314 } 5315 5316 @Override 5317 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 5318 super.onScrollChanged(l, t, oldl, oldt); 5319 if (!mInOverScrollMode) { 5320 sendOurVisibleRect(); 5321 // update WebKit if visible title bar height changed. The logic is same 5322 // as getVisibleTitleHeight. 5323 int titleHeight = getTitleHeight(); 5324 if (Math.max(titleHeight - t, 0) != Math.max(titleHeight - oldt, 0)) { 5325 sendViewSizeZoom(false); 5326 } 5327 } 5328 } 5329 5330 @Override 5331 public boolean dispatchKeyEvent(KeyEvent event) { 5332 switch (event.getAction()) { 5333 case KeyEvent.ACTION_DOWN: 5334 mKeysPressed.add(Integer.valueOf(event.getKeyCode())); 5335 break; 5336 case KeyEvent.ACTION_MULTIPLE: 5337 // Always accept the action. 5338 break; 5339 case KeyEvent.ACTION_UP: 5340 int location = mKeysPressed.indexOf(Integer.valueOf(event.getKeyCode())); 5341 if (location == -1) { 5342 // We did not receive the key down for this key, so do not 5343 // handle the key up. 5344 return false; 5345 } else { 5346 // We did receive the key down. Handle the key up, and 5347 // remove it from our pressed keys. 5348 mKeysPressed.remove(location); 5349 } 5350 break; 5351 default: 5352 // Accept the action. This should not happen, unless a new 5353 // action is added to KeyEvent. 5354 break; 5355 } 5356 if (inEditingMode() && mWebTextView.isFocused()) { 5357 // Ensure that the WebTextView gets the event, even if it does 5358 // not currently have a bounds. 5359 return mWebTextView.dispatchKeyEvent(event); 5360 } else { 5361 return super.dispatchKeyEvent(event); 5362 } 5363 } 5364 5365 // Here are the snap align logic: 5366 // 1. If it starts nearly horizontally or vertically, snap align; 5367 // 2. If there is a dramitic direction change, let it go; 5368 // 3. If there is a same direction back and forth, lock it. 5369 5370 // adjustable parameters 5371 private int mMinLockSnapReverseDistance; 5372 private static final float MAX_SLOPE_FOR_DIAG = 1.5f; 5373 private static final int MIN_BREAK_SNAP_CROSS_DISTANCE = 80; 5374 5375 private boolean hitFocusedPlugin(int contentX, int contentY) { 5376 if (DebugFlags.WEB_VIEW) { 5377 Log.v(LOGTAG, "nativeFocusIsPlugin()=" + nativeFocusIsPlugin()); 5378 Rect r = nativeFocusNodeBounds(); 5379 Log.v(LOGTAG, "nativeFocusNodeBounds()=(" + r.left + ", " + r.top 5380 + ", " + r.right + ", " + r.bottom + ")"); 5381 } 5382 return nativeFocusIsPlugin() 5383 && nativeFocusNodeBounds().contains(contentX, contentY); 5384 } 5385 5386 private boolean shouldForwardTouchEvent() { 5387 return mFullScreenHolder != null || (mForwardTouchEvents 5388 && !mSelectingText 5389 && mPreventDefault != PREVENT_DEFAULT_IGNORE 5390 && mPreventDefault != PREVENT_DEFAULT_NO); 5391 } 5392 5393 private boolean inFullScreenMode() { 5394 return mFullScreenHolder != null; 5395 } 5396 5397 private void dismissFullScreenMode() { 5398 if (inFullScreenMode()) { 5399 mFullScreenHolder.dismiss(); 5400 mFullScreenHolder = null; 5401 } 5402 } 5403 5404 void onPinchToZoomAnimationStart() { 5405 // cancel the single touch handling 5406 cancelTouch(); 5407 onZoomAnimationStart(); 5408 } 5409 5410 void onPinchToZoomAnimationEnd(ScaleGestureDetector detector) { 5411 onZoomAnimationEnd(); 5412 // start a drag, TOUCH_PINCH_DRAG, can't use TOUCH_INIT_MODE as 5413 // it may trigger the unwanted click, can't use TOUCH_DRAG_MODE 5414 // as it may trigger the unwanted fling. 5415 mTouchMode = TOUCH_PINCH_DRAG; 5416 mConfirmMove = true; 5417 startTouch(detector.getFocusX(), detector.getFocusY(), mLastTouchTime); 5418 } 5419 5420 // See if there is a layer at x, y and switch to TOUCH_DRAG_LAYER_MODE if a 5421 // layer is found. 5422 private void startScrollingLayer(float x, float y) { 5423 int contentX = viewToContentX((int) x + mScrollX); 5424 int contentY = viewToContentY((int) y + mScrollY); 5425 mScrollingLayer = nativeScrollableLayer(contentX, contentY, 5426 mScrollingLayerRect, mScrollingLayerBounds); 5427 if (mScrollingLayer != 0) { 5428 mTouchMode = TOUCH_DRAG_LAYER_MODE; 5429 } 5430 } 5431 5432 // 1/(density * density) used to compute the distance between points. 5433 // Computed in init(). 5434 private float DRAG_LAYER_INVERSE_DENSITY_SQUARED; 5435 5436 // The distance between two points reported in onTouchEvent scaled by the 5437 // density of the screen. 5438 private static final int DRAG_LAYER_FINGER_DISTANCE = 20000; 5439 5440 @Override 5441 public boolean onTouchEvent(MotionEvent ev) { 5442 if (mNativeClass == 0 || (!isClickable() && !isLongClickable())) { 5443 return false; 5444 } 5445 5446 if (DebugFlags.WEB_VIEW) { 5447 Log.v(LOGTAG, ev + " at " + ev.getEventTime() 5448 + " mTouchMode=" + mTouchMode 5449 + " numPointers=" + ev.getPointerCount()); 5450 } 5451 5452 // If WebKit wasn't interested in this multitouch gesture, enqueue 5453 // the event for handling directly rather than making the round trip 5454 // to WebKit and back. 5455 if (ev.getPointerCount() > 1 && mPreventDefault != PREVENT_DEFAULT_NO) { 5456 passMultiTouchToWebKit(ev, mTouchEventQueue.nextTouchSequence()); 5457 } else { 5458 mTouchEventQueue.enqueueTouchEvent(ev); 5459 } 5460 5461 // Since all events are handled asynchronously, we always want the gesture stream. 5462 return true; 5463 } 5464 5465 /* 5466 * Common code for single touch and multi-touch. 5467 * (x, y) denotes current focus point, which is the touch point for single touch 5468 * and the middle point for multi-touch. 5469 */ 5470 private boolean handleTouchEventCommon(MotionEvent ev, int action, int x, int y) { 5471 long eventTime = ev.getEventTime(); 5472 5473 5474 // Due to the touch screen edge effect, a touch closer to the edge 5475 // always snapped to the edge. As getViewWidth() can be different from 5476 // getWidth() due to the scrollbar, adjusting the point to match 5477 // getViewWidth(). Same applied to the height. 5478 x = Math.min(x, getViewWidth() - 1); 5479 y = Math.min(y, getViewHeightWithTitle() - 1); 5480 5481 int deltaX = mLastTouchX - x; 5482 int deltaY = mLastTouchY - y; 5483 int contentX = viewToContentX(x + mScrollX); 5484 int contentY = viewToContentY(y + mScrollY); 5485 5486 switch (action) { 5487 case MotionEvent.ACTION_DOWN: { 5488 mPreventDefault = PREVENT_DEFAULT_NO; 5489 mConfirmMove = false; 5490 mInitialHitTestResult = null; 5491 if (!mScroller.isFinished()) { 5492 // stop the current scroll animation, but if this is 5493 // the start of a fling, allow it to add to the current 5494 // fling's velocity 5495 mScroller.abortAnimation(); 5496 mTouchMode = TOUCH_DRAG_START_MODE; 5497 mConfirmMove = true; 5498 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 5499 } else if (mPrivateHandler.hasMessages(RELEASE_SINGLE_TAP)) { 5500 mPrivateHandler.removeMessages(RELEASE_SINGLE_TAP); 5501 if (getSettings().supportTouchOnly()) { 5502 removeTouchHighlight(true); 5503 } 5504 if (deltaX * deltaX + deltaY * deltaY < mDoubleTapSlopSquare) { 5505 mTouchMode = TOUCH_DOUBLE_TAP_MODE; 5506 } else { 5507 // commit the short press action for the previous tap 5508 doShortPress(); 5509 mTouchMode = TOUCH_INIT_MODE; 5510 mDeferTouchProcess = (!inFullScreenMode() 5511 && mForwardTouchEvents) ? hitFocusedPlugin( 5512 contentX, contentY) : false; 5513 } 5514 } else { // the normal case 5515 mTouchMode = TOUCH_INIT_MODE; 5516 mDeferTouchProcess = (!inFullScreenMode() 5517 && mForwardTouchEvents) ? hitFocusedPlugin( 5518 contentX, contentY) : false; 5519 mWebViewCore.sendMessage( 5520 EventHub.UPDATE_FRAME_CACHE_IF_LOADING); 5521 if (getSettings().supportTouchOnly()) { 5522 TouchHighlightData data = new TouchHighlightData(); 5523 data.mX = contentX; 5524 data.mY = contentY; 5525 data.mSlop = viewToContentDimension(mNavSlop); 5526 mWebViewCore.sendMessageDelayed( 5527 EventHub.GET_TOUCH_HIGHLIGHT_RECTS, data, 5528 ViewConfiguration.getTapTimeout()); 5529 if (DEBUG_TOUCH_HIGHLIGHT) { 5530 if (getSettings().getNavDump()) { 5531 mTouchHighlightX = (int) x + mScrollX; 5532 mTouchHighlightY = (int) y + mScrollY; 5533 mPrivateHandler.postDelayed(new Runnable() { 5534 public void run() { 5535 mTouchHighlightX = mTouchHighlightY = 0; 5536 invalidate(); 5537 } 5538 }, TOUCH_HIGHLIGHT_ELAPSE_TIME); 5539 } 5540 } 5541 } 5542 if (mLogEvent && eventTime - mLastTouchUpTime < 1000) { 5543 EventLog.writeEvent(EventLogTags.BROWSER_DOUBLE_TAP_DURATION, 5544 (eventTime - mLastTouchUpTime), eventTime); 5545 } 5546 if (mSelectingText) { 5547 mDrawSelectionPointer = false; 5548 mSelectionStarted = nativeStartSelection(contentX, contentY); 5549 if (DebugFlags.WEB_VIEW) { 5550 Log.v(LOGTAG, "select=" + contentX + "," + contentY); 5551 } 5552 invalidate(); 5553 } 5554 } 5555 // Trigger the link 5556 if (!mSelectingText && (mTouchMode == TOUCH_INIT_MODE 5557 || mTouchMode == TOUCH_DOUBLE_TAP_MODE)) { 5558 mPrivateHandler.sendEmptyMessageDelayed( 5559 SWITCH_TO_SHORTPRESS, TAP_TIMEOUT); 5560 mPrivateHandler.sendEmptyMessageDelayed( 5561 SWITCH_TO_LONGPRESS, LONG_PRESS_TIMEOUT); 5562 if (inFullScreenMode() || mDeferTouchProcess) { 5563 mPreventDefault = PREVENT_DEFAULT_YES; 5564 } else if (mForwardTouchEvents) { 5565 mPreventDefault = PREVENT_DEFAULT_MAYBE_YES; 5566 } else { 5567 mPreventDefault = PREVENT_DEFAULT_NO; 5568 } 5569 // pass the touch events from UI thread to WebCore thread 5570 if (shouldForwardTouchEvent()) { 5571 TouchEventData ted = new TouchEventData(); 5572 ted.mAction = action; 5573 ted.mIds = new int[1]; 5574 ted.mIds[0] = ev.getPointerId(0); 5575 ted.mPoints = new Point[1]; 5576 ted.mPoints[0] = new Point(contentX, contentY); 5577 ted.mMetaState = ev.getMetaState(); 5578 ted.mReprocess = mDeferTouchProcess; 5579 ted.mNativeLayer = nativeScrollableLayer( 5580 contentX, contentY, ted.mNativeLayerRect, null); 5581 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5582 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5583 if (mDeferTouchProcess) { 5584 // still needs to set them for compute deltaX/Y 5585 mLastTouchX = x; 5586 mLastTouchY = y; 5587 break; 5588 } 5589 if (!inFullScreenMode()) { 5590 mPrivateHandler.removeMessages(PREVENT_DEFAULT_TIMEOUT); 5591 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5592 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5593 action, 0), TAP_TIMEOUT); 5594 } 5595 } 5596 } 5597 startTouch(x, y, eventTime); 5598 break; 5599 } 5600 case MotionEvent.ACTION_MOVE: { 5601 boolean firstMove = false; 5602 if (!mConfirmMove && (deltaX * deltaX + deltaY * deltaY) 5603 >= mTouchSlopSquare) { 5604 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5605 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5606 mConfirmMove = true; 5607 firstMove = true; 5608 if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 5609 mTouchMode = TOUCH_INIT_MODE; 5610 } 5611 if (getSettings().supportTouchOnly()) { 5612 removeTouchHighlight(true); 5613 } 5614 } 5615 // pass the touch events from UI thread to WebCore thread 5616 if (shouldForwardTouchEvent() && mConfirmMove && (firstMove 5617 || eventTime - mLastSentTouchTime > mCurrentTouchInterval)) { 5618 TouchEventData ted = new TouchEventData(); 5619 ted.mAction = action; 5620 ted.mIds = new int[1]; 5621 ted.mIds[0] = ev.getPointerId(0); 5622 ted.mPoints = new Point[1]; 5623 ted.mPoints[0] = new Point(contentX, contentY); 5624 ted.mMetaState = ev.getMetaState(); 5625 ted.mReprocess = mDeferTouchProcess; 5626 ted.mNativeLayer = mScrollingLayer; 5627 ted.mNativeLayerRect.set(mScrollingLayerRect); 5628 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5629 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5630 mLastSentTouchTime = eventTime; 5631 if (mDeferTouchProcess) { 5632 break; 5633 } 5634 if (firstMove && !inFullScreenMode()) { 5635 mPrivateHandler.sendMessageDelayed(mPrivateHandler 5636 .obtainMessage(PREVENT_DEFAULT_TIMEOUT, 5637 action, 0), TAP_TIMEOUT); 5638 } 5639 } 5640 if (mTouchMode == TOUCH_DONE_MODE 5641 || mPreventDefault == PREVENT_DEFAULT_YES) { 5642 // no dragging during scroll zoom animation, or when prevent 5643 // default is yes 5644 break; 5645 } 5646 if (mVelocityTracker == null) { 5647 Log.e(LOGTAG, "Got null mVelocityTracker when " 5648 + "mPreventDefault = " + mPreventDefault 5649 + " mDeferTouchProcess = " + mDeferTouchProcess 5650 + " mTouchMode = " + mTouchMode); 5651 } else { 5652 mVelocityTracker.addMovement(ev); 5653 } 5654 if (mSelectingText && mSelectionStarted) { 5655 if (DebugFlags.WEB_VIEW) { 5656 Log.v(LOGTAG, "extend=" + contentX + "," + contentY); 5657 } 5658 ViewParent parent = getParent(); 5659 if (parent != null) { 5660 parent.requestDisallowInterceptTouchEvent(true); 5661 } 5662 mAutoScrollX = x <= mMinAutoScrollX ? -SELECT_SCROLL 5663 : x >= mMaxAutoScrollX ? SELECT_SCROLL : 0; 5664 mAutoScrollY = y <= mMinAutoScrollY ? -SELECT_SCROLL 5665 : y >= mMaxAutoScrollY ? SELECT_SCROLL : 0; 5666 if ((mAutoScrollX != 0 || mAutoScrollY != 0) 5667 && !mSentAutoScrollMessage) { 5668 mSentAutoScrollMessage = true; 5669 mPrivateHandler.sendEmptyMessageDelayed( 5670 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 5671 } 5672 if (deltaX != 0 || deltaY != 0) { 5673 nativeExtendSelection(contentX, contentY); 5674 invalidate(); 5675 } 5676 break; 5677 } 5678 5679 if (mTouchMode != TOUCH_DRAG_MODE && 5680 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5681 5682 if (!mConfirmMove) { 5683 break; 5684 } 5685 5686 if (mPreventDefault == PREVENT_DEFAULT_MAYBE_YES 5687 || mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 5688 // track mLastTouchTime as we may need to do fling at 5689 // ACTION_UP 5690 mLastTouchTime = eventTime; 5691 break; 5692 } 5693 5694 // Only lock dragging to one axis if we don't have a scale in progress. 5695 // Scaling implies free-roaming movement. Note this is only ever a question 5696 // if mZoomManager.supportsPanDuringZoom() is true. 5697 final ScaleGestureDetector detector = 5698 mZoomManager.getMultiTouchGestureDetector(); 5699 if (detector == null || !detector.isInProgress()) { 5700 // if it starts nearly horizontal or vertical, enforce it 5701 int ax = Math.abs(deltaX); 5702 int ay = Math.abs(deltaY); 5703 if (ax > MAX_SLOPE_FOR_DIAG * ay) { 5704 mSnapScrollMode = SNAP_X; 5705 mSnapPositive = deltaX > 0; 5706 } else if (ay > MAX_SLOPE_FOR_DIAG * ax) { 5707 mSnapScrollMode = SNAP_Y; 5708 mSnapPositive = deltaY > 0; 5709 } 5710 } 5711 5712 mTouchMode = TOUCH_DRAG_MODE; 5713 mLastTouchX = x; 5714 mLastTouchY = y; 5715 deltaX = 0; 5716 deltaY = 0; 5717 5718 startScrollingLayer(x, y); 5719 startDrag(); 5720 } 5721 5722 // do pan 5723 boolean done = false; 5724 boolean keepScrollBarsVisible = false; 5725 if (deltaX == 0 && deltaY == 0) { 5726 keepScrollBarsVisible = done = true; 5727 } else { 5728 if (mSnapScrollMode == SNAP_X || mSnapScrollMode == SNAP_Y) { 5729 int ax = Math.abs(deltaX); 5730 int ay = Math.abs(deltaY); 5731 if (mSnapScrollMode == SNAP_X) { 5732 // radical change means getting out of snap mode 5733 if (ay > MAX_SLOPE_FOR_DIAG * ax 5734 && ay > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5735 mSnapScrollMode = SNAP_NONE; 5736 } 5737 // reverse direction means lock in the snap mode 5738 if (ax > MAX_SLOPE_FOR_DIAG * ay && 5739 (mSnapPositive 5740 ? deltaX < -mMinLockSnapReverseDistance 5741 : deltaX > mMinLockSnapReverseDistance)) { 5742 mSnapScrollMode |= SNAP_LOCK; 5743 } 5744 } else { 5745 // radical change means getting out of snap mode 5746 if (ax > MAX_SLOPE_FOR_DIAG * ay 5747 && ax > MIN_BREAK_SNAP_CROSS_DISTANCE) { 5748 mSnapScrollMode = SNAP_NONE; 5749 } 5750 // reverse direction means lock in the snap mode 5751 if (ay > MAX_SLOPE_FOR_DIAG * ax && 5752 (mSnapPositive 5753 ? deltaY < -mMinLockSnapReverseDistance 5754 : deltaY > mMinLockSnapReverseDistance)) { 5755 mSnapScrollMode |= SNAP_LOCK; 5756 } 5757 } 5758 } 5759 if (mSnapScrollMode != SNAP_NONE) { 5760 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 5761 deltaY = 0; 5762 } else { 5763 deltaX = 0; 5764 } 5765 } 5766 if ((deltaX | deltaY) != 0) { 5767 if (deltaX != 0) { 5768 mLastTouchX = x; 5769 } 5770 if (deltaY != 0) { 5771 mLastTouchY = y; 5772 } 5773 mHeldMotionless = MOTIONLESS_FALSE; 5774 } 5775 mLastTouchTime = eventTime; 5776 } 5777 5778 doDrag(deltaX, deltaY); 5779 5780 // Turn off scrollbars when dragging a layer. 5781 if (keepScrollBarsVisible && 5782 mTouchMode != TOUCH_DRAG_LAYER_MODE) { 5783 if (mHeldMotionless != MOTIONLESS_TRUE) { 5784 mHeldMotionless = MOTIONLESS_TRUE; 5785 invalidate(); 5786 } 5787 // keep the scrollbar on the screen even there is no scroll 5788 awakenScrollBars(ViewConfiguration.getScrollDefaultDelay(), 5789 false); 5790 // return false to indicate that we can't pan out of the 5791 // view space 5792 return !done; 5793 } 5794 break; 5795 } 5796 case MotionEvent.ACTION_UP: { 5797 if (!isFocused()) requestFocus(); 5798 // pass the touch events from UI thread to WebCore thread 5799 if (shouldForwardTouchEvent()) { 5800 TouchEventData ted = new TouchEventData(); 5801 ted.mIds = new int[1]; 5802 ted.mIds[0] = ev.getPointerId(0); 5803 ted.mAction = action; 5804 ted.mPoints = new Point[1]; 5805 ted.mPoints[0] = new Point(contentX, contentY); 5806 ted.mMetaState = ev.getMetaState(); 5807 ted.mReprocess = mDeferTouchProcess; 5808 ted.mNativeLayer = mScrollingLayer; 5809 ted.mNativeLayerRect.set(mScrollingLayerRect); 5810 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5811 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5812 } 5813 mLastTouchUpTime = eventTime; 5814 if (mSentAutoScrollMessage) { 5815 mAutoScrollX = mAutoScrollY = 0; 5816 } 5817 switch (mTouchMode) { 5818 case TOUCH_DOUBLE_TAP_MODE: // double tap 5819 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5820 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5821 if (inFullScreenMode() || mDeferTouchProcess) { 5822 TouchEventData ted = new TouchEventData(); 5823 ted.mIds = new int[1]; 5824 ted.mIds[0] = ev.getPointerId(0); 5825 ted.mAction = WebViewCore.ACTION_DOUBLETAP; 5826 ted.mPoints = new Point[1]; 5827 ted.mPoints[0] = new Point(contentX, contentY); 5828 ted.mMetaState = ev.getMetaState(); 5829 ted.mReprocess = mDeferTouchProcess; 5830 ted.mNativeLayer = nativeScrollableLayer( 5831 contentX, contentY, 5832 ted.mNativeLayerRect, null); 5833 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 5834 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5835 } else if (mPreventDefault != PREVENT_DEFAULT_YES){ 5836 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 5837 mTouchMode = TOUCH_DONE_MODE; 5838 } 5839 break; 5840 case TOUCH_INIT_MODE: // tap 5841 case TOUCH_SHORTPRESS_START_MODE: 5842 case TOUCH_SHORTPRESS_MODE: 5843 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 5844 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5845 if (mConfirmMove) { 5846 Log.w(LOGTAG, "Miss a drag as we are waiting for" + 5847 " WebCore's response for touch down."); 5848 if (mPreventDefault != PREVENT_DEFAULT_YES 5849 && (computeMaxScrollX() > 0 5850 || computeMaxScrollY() > 0)) { 5851 // If the user has performed a very quick touch 5852 // sequence it is possible that we may get here 5853 // before WebCore has had a chance to process the events. 5854 // In this case, any call to preventDefault in the 5855 // JS touch handler will not have been executed yet. 5856 // Hence we will see both the UI (now) and WebCore 5857 // (when context switches) handling the event, 5858 // regardless of whether the web developer actually 5859 // doeses preventDefault in their touch handler. This 5860 // is the nature of our asynchronous touch model. 5861 5862 // we will not rewrite drag code here, but we 5863 // will try fling if it applies. 5864 WebViewCore.reducePriority(); 5865 // to get better performance, pause updating the 5866 // picture 5867 WebViewCore.pauseUpdatePicture(mWebViewCore); 5868 // fall through to TOUCH_DRAG_MODE 5869 } else { 5870 // WebKit may consume the touch event and modify 5871 // DOM. drawContentPicture() will be called with 5872 // animateSroll as true for better performance. 5873 // Force redraw in high-quality. 5874 invalidate(); 5875 break; 5876 } 5877 } else { 5878 if (mSelectingText) { 5879 // tapping on selection or controls does nothing 5880 if (!nativeHitSelection(contentX, contentY)) { 5881 selectionDone(); 5882 } 5883 break; 5884 } 5885 // only trigger double tap if the WebView is 5886 // scalable 5887 if (mTouchMode == TOUCH_INIT_MODE 5888 && (canZoomIn() || canZoomOut())) { 5889 mPrivateHandler.sendEmptyMessageDelayed( 5890 RELEASE_SINGLE_TAP, ViewConfiguration 5891 .getDoubleTapTimeout()); 5892 } else { 5893 doShortPress(); 5894 } 5895 break; 5896 } 5897 case TOUCH_DRAG_MODE: 5898 case TOUCH_DRAG_LAYER_MODE: 5899 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 5900 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 5901 // if the user waits a while w/o moving before the 5902 // up, we don't want to do a fling 5903 if (eventTime - mLastTouchTime <= MIN_FLING_TIME) { 5904 if (mVelocityTracker == null) { 5905 Log.e(LOGTAG, "Got null mVelocityTracker when " 5906 + "mPreventDefault = " 5907 + mPreventDefault 5908 + " mDeferTouchProcess = " 5909 + mDeferTouchProcess); 5910 } else { 5911 mVelocityTracker.addMovement(ev); 5912 } 5913 // set to MOTIONLESS_IGNORE so that it won't keep 5914 // removing and sending message in 5915 // drawCoreAndCursorRing() 5916 mHeldMotionless = MOTIONLESS_IGNORE; 5917 doFling(); 5918 break; 5919 } else { 5920 if (mScroller.springBack(mScrollX, mScrollY, 0, 5921 computeMaxScrollX(), 0, 5922 computeMaxScrollY())) { 5923 invalidate(); 5924 } 5925 } 5926 // redraw in high-quality, as we're done dragging 5927 mHeldMotionless = MOTIONLESS_TRUE; 5928 invalidate(); 5929 // fall through 5930 case TOUCH_DRAG_START_MODE: 5931 // TOUCH_DRAG_START_MODE should not happen for the real 5932 // device as we almost certain will get a MOVE. But this 5933 // is possible on emulator. 5934 mLastVelocity = 0; 5935 WebViewCore.resumePriority(); 5936 if (!mSelectingText) { 5937 WebViewCore.resumeUpdatePicture(mWebViewCore); 5938 } 5939 break; 5940 } 5941 stopTouch(); 5942 break; 5943 } 5944 case MotionEvent.ACTION_CANCEL: { 5945 if (mTouchMode == TOUCH_DRAG_MODE) { 5946 mScroller.springBack(mScrollX, mScrollY, 0, 5947 computeMaxScrollX(), 0, computeMaxScrollY()); 5948 invalidate(); 5949 } 5950 cancelWebCoreTouchEvent(contentX, contentY, false); 5951 cancelTouch(); 5952 break; 5953 } 5954 } 5955 return true; 5956 } 5957 5958 private void passMultiTouchToWebKit(MotionEvent ev, long sequence) { 5959 TouchEventData ted = new TouchEventData(); 5960 ted.mAction = ev.getActionMasked(); 5961 final int count = ev.getPointerCount(); 5962 ted.mIds = new int[count]; 5963 ted.mPoints = new Point[count]; 5964 for (int c = 0; c < count; c++) { 5965 ted.mIds[c] = ev.getPointerId(c); 5966 int x = viewToContentX((int) ev.getX(c) + mScrollX); 5967 int y = viewToContentY((int) ev.getY(c) + mScrollY); 5968 ted.mPoints[c] = new Point(x, y); 5969 } 5970 if (ted.mAction == MotionEvent.ACTION_POINTER_DOWN 5971 || ted.mAction == MotionEvent.ACTION_POINTER_UP) { 5972 ted.mActionIndex = ev.getActionIndex(); 5973 } 5974 ted.mMetaState = ev.getMetaState(); 5975 ted.mReprocess = true; 5976 ted.mMotionEvent = MotionEvent.obtain(ev); 5977 ted.mSequence = sequence; 5978 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 5979 cancelLongPress(); 5980 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 5981 } 5982 5983 void handleMultiTouchInWebView(MotionEvent ev) { 5984 if (DebugFlags.WEB_VIEW) { 5985 Log.v(LOGTAG, "multi-touch: " + ev + " at " + ev.getEventTime() 5986 + " mTouchMode=" + mTouchMode 5987 + " numPointers=" + ev.getPointerCount() 5988 + " scrolloffset=(" + mScrollX + "," + mScrollY + ")"); 5989 } 5990 5991 final ScaleGestureDetector detector = 5992 mZoomManager.getMultiTouchGestureDetector(); 5993 5994 // A few apps use WebView but don't instantiate gesture detector. 5995 // We don't need to support multi touch for them. 5996 if (detector == null) return; 5997 5998 float x = ev.getX(); 5999 float y = ev.getY(); 6000 6001 if (mPreventDefault != PREVENT_DEFAULT_YES) { 6002 detector.onTouchEvent(ev); 6003 6004 if (detector.isInProgress()) { 6005 if (DebugFlags.WEB_VIEW) { 6006 Log.v(LOGTAG, "detector is in progress"); 6007 } 6008 mLastTouchTime = ev.getEventTime(); 6009 x = detector.getFocusX(); 6010 y = detector.getFocusY(); 6011 6012 cancelLongPress(); 6013 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6014 if (!mZoomManager.supportsPanDuringZoom()) { 6015 return; 6016 } 6017 mTouchMode = TOUCH_DRAG_MODE; 6018 if (mVelocityTracker == null) { 6019 mVelocityTracker = VelocityTracker.obtain(); 6020 } 6021 } 6022 } 6023 6024 int action = ev.getActionMasked(); 6025 if (action == MotionEvent.ACTION_POINTER_DOWN) { 6026 cancelTouch(); 6027 action = MotionEvent.ACTION_DOWN; 6028 } else if (action == MotionEvent.ACTION_POINTER_UP && ev.getPointerCount() == 2) { 6029 // set mLastTouchX/Y to the remaining point 6030 mLastTouchX = Math.round(x); 6031 mLastTouchY = Math.round(y); 6032 } else if (action == MotionEvent.ACTION_MOVE) { 6033 // negative x or y indicate it is on the edge, skip it. 6034 if (x < 0 || y < 0) { 6035 return; 6036 } 6037 } 6038 6039 handleTouchEventCommon(ev, action, Math.round(x), Math.round(y)); 6040 } 6041 6042 private void cancelWebCoreTouchEvent(int x, int y, boolean removeEvents) { 6043 if (shouldForwardTouchEvent()) { 6044 if (removeEvents) { 6045 mWebViewCore.removeMessages(EventHub.TOUCH_EVENT); 6046 mTouchEventQueue.ignoreCurrentlyMissingEvents(); 6047 } 6048 TouchEventData ted = new TouchEventData(); 6049 ted.mIds = new int[1]; 6050 ted.mIds[0] = 0; 6051 ted.mPoints = new Point[1]; 6052 ted.mPoints[0] = new Point(x, y); 6053 ted.mAction = MotionEvent.ACTION_CANCEL; 6054 ted.mNativeLayer = nativeScrollableLayer( 6055 x, y, ted.mNativeLayerRect, null); 6056 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 6057 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 6058 mPreventDefault = PREVENT_DEFAULT_IGNORE; 6059 } 6060 } 6061 6062 private void startTouch(float x, float y, long eventTime) { 6063 // Remember where the motion event started 6064 mLastTouchX = Math.round(x); 6065 mLastTouchY = Math.round(y); 6066 mLastTouchTime = eventTime; 6067 mVelocityTracker = VelocityTracker.obtain(); 6068 mSnapScrollMode = SNAP_NONE; 6069 } 6070 6071 private void startDrag() { 6072 WebViewCore.reducePriority(); 6073 // to get better performance, pause updating the picture 6074 WebViewCore.pauseUpdatePicture(mWebViewCore); 6075 if (!mDragFromTextInput) { 6076 nativeHideCursor(); 6077 } 6078 6079 if (mHorizontalScrollBarMode != SCROLLBAR_ALWAYSOFF 6080 || mVerticalScrollBarMode != SCROLLBAR_ALWAYSOFF) { 6081 mZoomManager.invokeZoomPicker(); 6082 } 6083 } 6084 6085 private void doDrag(int deltaX, int deltaY) { 6086 if ((deltaX | deltaY) != 0) { 6087 int oldX = mScrollX; 6088 int oldY = mScrollY; 6089 int rangeX = computeMaxScrollX(); 6090 int rangeY = computeMaxScrollY(); 6091 int overscrollDistance = mOverscrollDistance; 6092 6093 // Check for the original scrolling layer in case we change 6094 // directions. mTouchMode might be TOUCH_DRAG_MODE if we have 6095 // reached the edge of a layer but mScrollingLayer will be non-zero 6096 // if we initiated the drag on a layer. 6097 if (mScrollingLayer != 0) { 6098 final int contentX = viewToContentDimension(deltaX); 6099 final int contentY = viewToContentDimension(deltaY); 6100 6101 // Check the scrolling bounds to see if we will actually do any 6102 // scrolling. The rectangle is in document coordinates. 6103 final int maxX = mScrollingLayerRect.right; 6104 final int maxY = mScrollingLayerRect.bottom; 6105 final int resultX = Math.max(0, 6106 Math.min(mScrollingLayerRect.left + contentX, maxX)); 6107 final int resultY = Math.max(0, 6108 Math.min(mScrollingLayerRect.top + contentY, maxY)); 6109 6110 if (resultX != mScrollingLayerRect.left || 6111 resultY != mScrollingLayerRect.top) { 6112 // In case we switched to dragging the page. 6113 mTouchMode = TOUCH_DRAG_LAYER_MODE; 6114 deltaX = contentX; 6115 deltaY = contentY; 6116 oldX = mScrollingLayerRect.left; 6117 oldY = mScrollingLayerRect.top; 6118 rangeX = maxX; 6119 rangeY = maxY; 6120 } else { 6121 // Scroll the main page if we are not going to scroll the 6122 // layer. This does not reset mScrollingLayer in case the 6123 // user changes directions and the layer can scroll the 6124 // other way. 6125 mTouchMode = TOUCH_DRAG_MODE; 6126 } 6127 } 6128 6129 if (mOverScrollGlow != null) { 6130 mOverScrollGlow.setOverScrollDeltas(deltaX, deltaY); 6131 } 6132 6133 overScrollBy(deltaX, deltaY, oldX, oldY, 6134 rangeX, rangeY, 6135 mOverscrollDistance, mOverscrollDistance, true); 6136 if (mOverScrollGlow != null && mOverScrollGlow.isAnimating()) { 6137 invalidate(); 6138 } 6139 } 6140 mZoomManager.keepZoomPickerVisible(); 6141 } 6142 6143 private void stopTouch() { 6144 // we also use mVelocityTracker == null to tell us that we are 6145 // not "moving around", so we can take the slower/prettier 6146 // mode in the drawing code 6147 if (mVelocityTracker != null) { 6148 mVelocityTracker.recycle(); 6149 mVelocityTracker = null; 6150 } 6151 6152 // Release any pulled glows 6153 if (mOverScrollGlow != null) { 6154 mOverScrollGlow.releaseAll(); 6155 } 6156 } 6157 6158 private void cancelTouch() { 6159 // we also use mVelocityTracker == null to tell us that we are 6160 // not "moving around", so we can take the slower/prettier 6161 // mode in the drawing code 6162 if (mVelocityTracker != null) { 6163 mVelocityTracker.recycle(); 6164 mVelocityTracker = null; 6165 } 6166 6167 if ((mTouchMode == TOUCH_DRAG_MODE 6168 || mTouchMode == TOUCH_DRAG_LAYER_MODE) && !mSelectingText) { 6169 WebViewCore.resumePriority(); 6170 WebViewCore.resumeUpdatePicture(mWebViewCore); 6171 } 6172 mPrivateHandler.removeMessages(SWITCH_TO_SHORTPRESS); 6173 mPrivateHandler.removeMessages(SWITCH_TO_LONGPRESS); 6174 mPrivateHandler.removeMessages(DRAG_HELD_MOTIONLESS); 6175 mPrivateHandler.removeMessages(AWAKEN_SCROLL_BARS); 6176 if (getSettings().supportTouchOnly()) { 6177 removeTouchHighlight(true); 6178 } 6179 mHeldMotionless = MOTIONLESS_TRUE; 6180 mTouchMode = TOUCH_DONE_MODE; 6181 nativeHideCursor(); 6182 } 6183 6184 @Override 6185 public boolean onGenericMotionEvent(MotionEvent event) { 6186 if ((event.getSource() & InputDevice.SOURCE_CLASS_POINTER) != 0) { 6187 switch (event.getAction()) { 6188 case MotionEvent.ACTION_SCROLL: { 6189 final float vscroll; 6190 final float hscroll; 6191 if ((event.getMetaState() & KeyEvent.META_SHIFT_ON) != 0) { 6192 vscroll = 0; 6193 hscroll = event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6194 } else { 6195 vscroll = -event.getAxisValue(MotionEvent.AXIS_VSCROLL); 6196 hscroll = event.getAxisValue(MotionEvent.AXIS_HSCROLL); 6197 } 6198 if (hscroll != 0 || vscroll != 0) { 6199 final int vdelta = (int) (vscroll * getVerticalScrollFactor()); 6200 final int hdelta = (int) (hscroll * getHorizontalScrollFactor()); 6201 if (pinScrollBy(hdelta, vdelta, true, 0)) { 6202 return true; 6203 } 6204 } 6205 } 6206 } 6207 } 6208 return super.onGenericMotionEvent(event); 6209 } 6210 6211 private long mTrackballFirstTime = 0; 6212 private long mTrackballLastTime = 0; 6213 private float mTrackballRemainsX = 0.0f; 6214 private float mTrackballRemainsY = 0.0f; 6215 private int mTrackballXMove = 0; 6216 private int mTrackballYMove = 0; 6217 private boolean mSelectingText = false; 6218 private boolean mSelectionStarted = false; 6219 private boolean mExtendSelection = false; 6220 private boolean mDrawSelectionPointer = false; 6221 private static final int TRACKBALL_KEY_TIMEOUT = 1000; 6222 private static final int TRACKBALL_TIMEOUT = 200; 6223 private static final int TRACKBALL_WAIT = 100; 6224 private static final int TRACKBALL_SCALE = 400; 6225 private static final int TRACKBALL_SCROLL_COUNT = 5; 6226 private static final int TRACKBALL_MOVE_COUNT = 10; 6227 private static final int TRACKBALL_MULTIPLIER = 3; 6228 private static final int SELECT_CURSOR_OFFSET = 16; 6229 private static final int SELECT_SCROLL = 5; 6230 private int mSelectX = 0; 6231 private int mSelectY = 0; 6232 private boolean mFocusSizeChanged = false; 6233 private boolean mTrackballDown = false; 6234 private long mTrackballUpTime = 0; 6235 private long mLastCursorTime = 0; 6236 private Rect mLastCursorBounds; 6237 6238 // Set by default; BrowserActivity clears to interpret trackball data 6239 // directly for movement. Currently, the framework only passes 6240 // arrow key events, not trackball events, from one child to the next 6241 private boolean mMapTrackballToArrowKeys = true; 6242 6243 public void setMapTrackballToArrowKeys(boolean setMap) { 6244 mMapTrackballToArrowKeys = setMap; 6245 } 6246 6247 void resetTrackballTime() { 6248 mTrackballLastTime = 0; 6249 } 6250 6251 @Override 6252 public boolean onTrackballEvent(MotionEvent ev) { 6253 long time = ev.getEventTime(); 6254 if ((ev.getMetaState() & KeyEvent.META_ALT_ON) != 0) { 6255 if (ev.getY() > 0) pageDown(true); 6256 if (ev.getY() < 0) pageUp(true); 6257 return true; 6258 } 6259 if (ev.getAction() == MotionEvent.ACTION_DOWN) { 6260 if (mSelectingText) { 6261 return true; // discard press if copy in progress 6262 } 6263 mTrackballDown = true; 6264 if (mNativeClass == 0) { 6265 return false; 6266 } 6267 nativeRecordButtons(hasFocus() && hasWindowFocus(), true, true); 6268 if (time - mLastCursorTime <= TRACKBALL_TIMEOUT 6269 && !mLastCursorBounds.equals(nativeGetCursorRingBounds())) { 6270 nativeSelectBestAt(mLastCursorBounds); 6271 } 6272 if (DebugFlags.WEB_VIEW) { 6273 Log.v(LOGTAG, "onTrackballEvent down ev=" + ev 6274 + " time=" + time 6275 + " mLastCursorTime=" + mLastCursorTime); 6276 } 6277 if (isInTouchMode()) requestFocusFromTouch(); 6278 return false; // let common code in onKeyDown at it 6279 } 6280 if (ev.getAction() == MotionEvent.ACTION_UP) { 6281 // LONG_PRESS_CENTER is set in common onKeyDown 6282 mPrivateHandler.removeMessages(LONG_PRESS_CENTER); 6283 mTrackballDown = false; 6284 mTrackballUpTime = time; 6285 if (mSelectingText) { 6286 if (mExtendSelection) { 6287 copySelection(); 6288 selectionDone(); 6289 } else { 6290 mExtendSelection = true; 6291 nativeSetExtendSelection(); 6292 invalidate(); // draw the i-beam instead of the arrow 6293 } 6294 return true; // discard press if copy in progress 6295 } 6296 if (DebugFlags.WEB_VIEW) { 6297 Log.v(LOGTAG, "onTrackballEvent up ev=" + ev 6298 + " time=" + time 6299 ); 6300 } 6301 return false; // let common code in onKeyUp at it 6302 } 6303 if ((mMapTrackballToArrowKeys && (ev.getMetaState() & KeyEvent.META_SHIFT_ON) == 0) || 6304 AccessibilityManager.getInstance(mContext).isEnabled()) { 6305 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent gmail quit"); 6306 return false; 6307 } 6308 if (mTrackballDown) { 6309 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent down quit"); 6310 return true; // discard move if trackball is down 6311 } 6312 if (time - mTrackballUpTime < TRACKBALL_TIMEOUT) { 6313 if (DebugFlags.WEB_VIEW) Log.v(LOGTAG, "onTrackballEvent up timeout quit"); 6314 return true; 6315 } 6316 // TODO: alternatively we can do panning as touch does 6317 switchOutDrawHistory(); 6318 if (time - mTrackballLastTime > TRACKBALL_TIMEOUT) { 6319 if (DebugFlags.WEB_VIEW) { 6320 Log.v(LOGTAG, "onTrackballEvent time=" 6321 + time + " last=" + mTrackballLastTime); 6322 } 6323 mTrackballFirstTime = time; 6324 mTrackballXMove = mTrackballYMove = 0; 6325 } 6326 mTrackballLastTime = time; 6327 if (DebugFlags.WEB_VIEW) { 6328 Log.v(LOGTAG, "onTrackballEvent ev=" + ev + " time=" + time); 6329 } 6330 mTrackballRemainsX += ev.getX(); 6331 mTrackballRemainsY += ev.getY(); 6332 doTrackball(time, ev.getMetaState()); 6333 return true; 6334 } 6335 6336 void moveSelection(float xRate, float yRate) { 6337 if (mNativeClass == 0) 6338 return; 6339 int width = getViewWidth(); 6340 int height = getViewHeight(); 6341 mSelectX += xRate; 6342 mSelectY += yRate; 6343 int maxX = width + mScrollX; 6344 int maxY = height + mScrollY; 6345 mSelectX = Math.min(maxX, Math.max(mScrollX - SELECT_CURSOR_OFFSET 6346 , mSelectX)); 6347 mSelectY = Math.min(maxY, Math.max(mScrollY - SELECT_CURSOR_OFFSET 6348 , mSelectY)); 6349 if (DebugFlags.WEB_VIEW) { 6350 Log.v(LOGTAG, "moveSelection" 6351 + " mSelectX=" + mSelectX 6352 + " mSelectY=" + mSelectY 6353 + " mScrollX=" + mScrollX 6354 + " mScrollY=" + mScrollY 6355 + " xRate=" + xRate 6356 + " yRate=" + yRate 6357 ); 6358 } 6359 nativeMoveSelection(viewToContentX(mSelectX), viewToContentY(mSelectY)); 6360 int scrollX = mSelectX < mScrollX ? -SELECT_CURSOR_OFFSET 6361 : mSelectX > maxX - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6362 : 0; 6363 int scrollY = mSelectY < mScrollY ? -SELECT_CURSOR_OFFSET 6364 : mSelectY > maxY - SELECT_CURSOR_OFFSET ? SELECT_CURSOR_OFFSET 6365 : 0; 6366 pinScrollBy(scrollX, scrollY, true, 0); 6367 Rect select = new Rect(mSelectX, mSelectY, mSelectX + 1, mSelectY + 1); 6368 requestRectangleOnScreen(select); 6369 invalidate(); 6370 } 6371 6372 private int scaleTrackballX(float xRate, int width) { 6373 int xMove = (int) (xRate / TRACKBALL_SCALE * width); 6374 int nextXMove = xMove; 6375 if (xMove > 0) { 6376 if (xMove > mTrackballXMove) { 6377 xMove -= mTrackballXMove; 6378 } 6379 } else if (xMove < mTrackballXMove) { 6380 xMove -= mTrackballXMove; 6381 } 6382 mTrackballXMove = nextXMove; 6383 return xMove; 6384 } 6385 6386 private int scaleTrackballY(float yRate, int height) { 6387 int yMove = (int) (yRate / TRACKBALL_SCALE * height); 6388 int nextYMove = yMove; 6389 if (yMove > 0) { 6390 if (yMove > mTrackballYMove) { 6391 yMove -= mTrackballYMove; 6392 } 6393 } else if (yMove < mTrackballYMove) { 6394 yMove -= mTrackballYMove; 6395 } 6396 mTrackballYMove = nextYMove; 6397 return yMove; 6398 } 6399 6400 private int keyCodeToSoundsEffect(int keyCode) { 6401 switch(keyCode) { 6402 case KeyEvent.KEYCODE_DPAD_UP: 6403 return SoundEffectConstants.NAVIGATION_UP; 6404 case KeyEvent.KEYCODE_DPAD_RIGHT: 6405 return SoundEffectConstants.NAVIGATION_RIGHT; 6406 case KeyEvent.KEYCODE_DPAD_DOWN: 6407 return SoundEffectConstants.NAVIGATION_DOWN; 6408 case KeyEvent.KEYCODE_DPAD_LEFT: 6409 return SoundEffectConstants.NAVIGATION_LEFT; 6410 } 6411 throw new IllegalArgumentException("keyCode must be one of " + 6412 "{KEYCODE_DPAD_UP, KEYCODE_DPAD_RIGHT, KEYCODE_DPAD_DOWN, " + 6413 "KEYCODE_DPAD_LEFT}."); 6414 } 6415 6416 private void doTrackball(long time, int metaState) { 6417 int elapsed = (int) (mTrackballLastTime - mTrackballFirstTime); 6418 if (elapsed == 0) { 6419 elapsed = TRACKBALL_TIMEOUT; 6420 } 6421 float xRate = mTrackballRemainsX * 1000 / elapsed; 6422 float yRate = mTrackballRemainsY * 1000 / elapsed; 6423 int viewWidth = getViewWidth(); 6424 int viewHeight = getViewHeight(); 6425 if (mSelectingText) { 6426 if (!mDrawSelectionPointer) { 6427 // The last selection was made by touch, disabling drawing the 6428 // selection pointer. Allow the trackball to adjust the 6429 // position of the touch control. 6430 mSelectX = contentToViewX(nativeSelectionX()); 6431 mSelectY = contentToViewY(nativeSelectionY()); 6432 mDrawSelectionPointer = mExtendSelection = true; 6433 nativeSetExtendSelection(); 6434 } 6435 moveSelection(scaleTrackballX(xRate, viewWidth), 6436 scaleTrackballY(yRate, viewHeight)); 6437 mTrackballRemainsX = mTrackballRemainsY = 0; 6438 return; 6439 } 6440 float ax = Math.abs(xRate); 6441 float ay = Math.abs(yRate); 6442 float maxA = Math.max(ax, ay); 6443 if (DebugFlags.WEB_VIEW) { 6444 Log.v(LOGTAG, "doTrackball elapsed=" + elapsed 6445 + " xRate=" + xRate 6446 + " yRate=" + yRate 6447 + " mTrackballRemainsX=" + mTrackballRemainsX 6448 + " mTrackballRemainsY=" + mTrackballRemainsY); 6449 } 6450 int width = mContentWidth - viewWidth; 6451 int height = mContentHeight - viewHeight; 6452 if (width < 0) width = 0; 6453 if (height < 0) height = 0; 6454 ax = Math.abs(mTrackballRemainsX * TRACKBALL_MULTIPLIER); 6455 ay = Math.abs(mTrackballRemainsY * TRACKBALL_MULTIPLIER); 6456 maxA = Math.max(ax, ay); 6457 int count = Math.max(0, (int) maxA); 6458 int oldScrollX = mScrollX; 6459 int oldScrollY = mScrollY; 6460 if (count > 0) { 6461 int selectKeyCode = ax < ay ? mTrackballRemainsY < 0 ? 6462 KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN : 6463 mTrackballRemainsX < 0 ? KeyEvent.KEYCODE_DPAD_LEFT : 6464 KeyEvent.KEYCODE_DPAD_RIGHT; 6465 count = Math.min(count, TRACKBALL_MOVE_COUNT); 6466 if (DebugFlags.WEB_VIEW) { 6467 Log.v(LOGTAG, "doTrackball keyCode=" + selectKeyCode 6468 + " count=" + count 6469 + " mTrackballRemainsX=" + mTrackballRemainsX 6470 + " mTrackballRemainsY=" + mTrackballRemainsY); 6471 } 6472 if (mNativeClass != 0 && nativePageShouldHandleShiftAndArrows()) { 6473 for (int i = 0; i < count; i++) { 6474 letPageHandleNavKey(selectKeyCode, time, true, metaState); 6475 } 6476 letPageHandleNavKey(selectKeyCode, time, false, metaState); 6477 } else if (navHandledKey(selectKeyCode, count, false, time)) { 6478 playSoundEffect(keyCodeToSoundsEffect(selectKeyCode)); 6479 } 6480 mTrackballRemainsX = mTrackballRemainsY = 0; 6481 } 6482 if (count >= TRACKBALL_SCROLL_COUNT) { 6483 int xMove = scaleTrackballX(xRate, width); 6484 int yMove = scaleTrackballY(yRate, height); 6485 if (DebugFlags.WEB_VIEW) { 6486 Log.v(LOGTAG, "doTrackball pinScrollBy" 6487 + " count=" + count 6488 + " xMove=" + xMove + " yMove=" + yMove 6489 + " mScrollX-oldScrollX=" + (mScrollX-oldScrollX) 6490 + " mScrollY-oldScrollY=" + (mScrollY-oldScrollY) 6491 ); 6492 } 6493 if (Math.abs(mScrollX - oldScrollX) > Math.abs(xMove)) { 6494 xMove = 0; 6495 } 6496 if (Math.abs(mScrollY - oldScrollY) > Math.abs(yMove)) { 6497 yMove = 0; 6498 } 6499 if (xMove != 0 || yMove != 0) { 6500 pinScrollBy(xMove, yMove, true, 0); 6501 } 6502 } 6503 } 6504 6505 /** 6506 * Compute the maximum horizontal scroll position. Used by {@link OverScrollGlow}. 6507 * @return Maximum horizontal scroll position within real content 6508 */ 6509 int computeMaxScrollX() { 6510 return Math.max(computeRealHorizontalScrollRange() - getViewWidth(), 0); 6511 } 6512 6513 /** 6514 * Compute the maximum vertical scroll position. Used by {@link OverScrollGlow}. 6515 * @return Maximum vertical scroll position within real content 6516 */ 6517 int computeMaxScrollY() { 6518 return Math.max(computeRealVerticalScrollRange() + getTitleHeight() 6519 - getViewHeightWithTitle(), 0); 6520 } 6521 6522 boolean updateScrollCoordinates(int x, int y) { 6523 int oldX = mScrollX; 6524 int oldY = mScrollY; 6525 mScrollX = x; 6526 mScrollY = y; 6527 if (oldX != mScrollX || oldY != mScrollY) { 6528 onScrollChanged(mScrollX, mScrollY, oldX, oldY); 6529 return true; 6530 } else { 6531 return false; 6532 } 6533 } 6534 6535 public void flingScroll(int vx, int vy) { 6536 mScroller.fling(mScrollX, mScrollY, vx, vy, 0, computeMaxScrollX(), 0, 6537 computeMaxScrollY(), mOverflingDistance, mOverflingDistance); 6538 invalidate(); 6539 } 6540 6541 private void doFling() { 6542 if (mVelocityTracker == null) { 6543 return; 6544 } 6545 int maxX = computeMaxScrollX(); 6546 int maxY = computeMaxScrollY(); 6547 6548 mVelocityTracker.computeCurrentVelocity(1000, mMaximumFling); 6549 int vx = (int) mVelocityTracker.getXVelocity(); 6550 int vy = (int) mVelocityTracker.getYVelocity(); 6551 6552 int scrollX = mScrollX; 6553 int scrollY = mScrollY; 6554 int overscrollDistance = mOverscrollDistance; 6555 int overflingDistance = mOverflingDistance; 6556 6557 // Use the layer's scroll data if applicable. 6558 if (mTouchMode == TOUCH_DRAG_LAYER_MODE) { 6559 scrollX = mScrollingLayerRect.left; 6560 scrollY = mScrollingLayerRect.top; 6561 maxX = mScrollingLayerRect.right; 6562 maxY = mScrollingLayerRect.bottom; 6563 // No overscrolling for layers. 6564 overscrollDistance = overflingDistance = 0; 6565 } 6566 6567 if (mSnapScrollMode != SNAP_NONE) { 6568 if ((mSnapScrollMode & SNAP_X) == SNAP_X) { 6569 vy = 0; 6570 } else { 6571 vx = 0; 6572 } 6573 } 6574 if (true /* EMG release: make our fling more like Maps' */) { 6575 // maps cuts their velocity in half 6576 vx = vx * 3 / 4; 6577 vy = vy * 3 / 4; 6578 } 6579 if ((maxX == 0 && vy == 0) || (maxY == 0 && vx == 0)) { 6580 WebViewCore.resumePriority(); 6581 if (!mSelectingText) { 6582 WebViewCore.resumeUpdatePicture(mWebViewCore); 6583 } 6584 if (mScroller.springBack(scrollX, scrollY, 0, maxX, 0, maxY)) { 6585 invalidate(); 6586 } 6587 return; 6588 } 6589 float currentVelocity = mScroller.getCurrVelocity(); 6590 float velocity = (float) Math.hypot(vx, vy); 6591 if (mLastVelocity > 0 && currentVelocity > 0 && velocity 6592 > mLastVelocity * MINIMUM_VELOCITY_RATIO_FOR_ACCELERATION) { 6593 float deltaR = (float) (Math.abs(Math.atan2(mLastVelY, mLastVelX) 6594 - Math.atan2(vy, vx))); 6595 final float circle = (float) (Math.PI) * 2.0f; 6596 if (deltaR > circle * 0.9f || deltaR < circle * 0.1f) { 6597 vx += currentVelocity * mLastVelX / mLastVelocity; 6598 vy += currentVelocity * mLastVelY / mLastVelocity; 6599 velocity = (float) Math.hypot(vx, vy); 6600 if (DebugFlags.WEB_VIEW) { 6601 Log.v(LOGTAG, "doFling vx= " + vx + " vy=" + vy); 6602 } 6603 } else if (DebugFlags.WEB_VIEW) { 6604 Log.v(LOGTAG, "doFling missed " + deltaR / circle); 6605 } 6606 } else if (DebugFlags.WEB_VIEW) { 6607 Log.v(LOGTAG, "doFling start last=" + mLastVelocity 6608 + " current=" + currentVelocity 6609 + " vx=" + vx + " vy=" + vy 6610 + " maxX=" + maxX + " maxY=" + maxY 6611 + " scrollX=" + scrollX + " scrollY=" + scrollY 6612 + " layer=" + mScrollingLayer); 6613 } 6614 6615 // Allow sloppy flings without overscrolling at the edges. 6616 if ((scrollX == 0 || scrollX == maxX) && Math.abs(vx) < Math.abs(vy)) { 6617 vx = 0; 6618 } 6619 if ((scrollY == 0 || scrollY == maxY) && Math.abs(vy) < Math.abs(vx)) { 6620 vy = 0; 6621 } 6622 6623 if (overscrollDistance < overflingDistance) { 6624 if ((vx > 0 && scrollX == -overscrollDistance) || 6625 (vx < 0 && scrollX == maxX + overscrollDistance)) { 6626 vx = 0; 6627 } 6628 if ((vy > 0 && scrollY == -overscrollDistance) || 6629 (vy < 0 && scrollY == maxY + overscrollDistance)) { 6630 vy = 0; 6631 } 6632 } 6633 6634 mLastVelX = vx; 6635 mLastVelY = vy; 6636 mLastVelocity = velocity; 6637 6638 // no horizontal overscroll if the content just fits 6639 mScroller.fling(scrollX, scrollY, -vx, -vy, 0, maxX, 0, maxY, 6640 maxX == 0 ? 0 : overflingDistance, overflingDistance); 6641 // Duration is calculated based on velocity. With range boundaries and overscroll 6642 // we may not know how long the final animation will take. (Hence the deprecation 6643 // warning on the call below.) It's not a big deal for scroll bars but if webcore 6644 // resumes during this effect we will take a performance hit. See computeScroll; 6645 // we resume webcore there when the animation is finished. 6646 final int time = mScroller.getDuration(); 6647 6648 // Suppress scrollbars for layer scrolling. 6649 if (mTouchMode != TOUCH_DRAG_LAYER_MODE) { 6650 awakenScrollBars(time); 6651 } 6652 6653 invalidate(); 6654 } 6655 6656 /** 6657 * Returns a view containing zoom controls i.e. +/- buttons. The caller is 6658 * in charge of installing this view to the view hierarchy. This view will 6659 * become visible when the user starts scrolling via touch and fade away if 6660 * the user does not interact with it. 6661 * <p/> 6662 * API version 3 introduces a built-in zoom mechanism that is shown 6663 * automatically by the MapView. This is the preferred approach for 6664 * showing the zoom UI. 6665 * 6666 * @deprecated The built-in zoom mechanism is preferred, see 6667 * {@link WebSettings#setBuiltInZoomControls(boolean)}. 6668 */ 6669 @Deprecated 6670 public View getZoomControls() { 6671 if (!getSettings().supportZoom()) { 6672 Log.w(LOGTAG, "This WebView doesn't support zoom."); 6673 return null; 6674 } 6675 return mZoomManager.getExternalZoomPicker(); 6676 } 6677 6678 void dismissZoomControl() { 6679 mZoomManager.dismissZoomPicker(); 6680 } 6681 6682 float getDefaultZoomScale() { 6683 return mZoomManager.getDefaultScale(); 6684 } 6685 6686 /** 6687 * @return TRUE if the WebView can be zoomed in. 6688 */ 6689 public boolean canZoomIn() { 6690 return mZoomManager.canZoomIn(); 6691 } 6692 6693 /** 6694 * @return TRUE if the WebView can be zoomed out. 6695 */ 6696 public boolean canZoomOut() { 6697 return mZoomManager.canZoomOut(); 6698 } 6699 6700 /** 6701 * Perform zoom in in the webview 6702 * @return TRUE if zoom in succeeds. FALSE if no zoom changes. 6703 */ 6704 public boolean zoomIn() { 6705 return mZoomManager.zoomIn(); 6706 } 6707 6708 /** 6709 * Perform zoom out in the webview 6710 * @return TRUE if zoom out succeeds. FALSE if no zoom changes. 6711 */ 6712 public boolean zoomOut() { 6713 return mZoomManager.zoomOut(); 6714 } 6715 6716 private void updateSelection() { 6717 if (mNativeClass == 0) { 6718 return; 6719 } 6720 // mLastTouchX and mLastTouchY are the point in the current viewport 6721 int contentX = viewToContentX(mLastTouchX + mScrollX); 6722 int contentY = viewToContentY(mLastTouchY + mScrollY); 6723 int slop = viewToContentDimension(mNavSlop); 6724 Rect rect = new Rect(contentX - slop, contentY - slop, 6725 contentX + slop, contentY + slop); 6726 nativeSelectBestAt(rect); 6727 mInitialHitTestResult = hitTestResult(null); 6728 } 6729 6730 /** 6731 * Scroll the focused text field to match the WebTextView 6732 * @param xPercent New x position of the WebTextView from 0 to 1. 6733 */ 6734 /*package*/ void scrollFocusedTextInputX(float xPercent) { 6735 if (!inEditingMode() || mWebViewCore == null) { 6736 return; 6737 } 6738 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, 6739 new Float(xPercent)); 6740 } 6741 6742 /** 6743 * Scroll the focused textarea vertically to match the WebTextView 6744 * @param y New y position of the WebTextView in view coordinates 6745 */ 6746 /* package */ void scrollFocusedTextInputY(int y) { 6747 if (!inEditingMode() || mWebViewCore == null) { 6748 return; 6749 } 6750 mWebViewCore.sendMessage(EventHub.SCROLL_TEXT_INPUT, 0, viewToContentDimension(y)); 6751 } 6752 6753 /** 6754 * Set our starting point and time for a drag from the WebTextView. 6755 */ 6756 /*package*/ void initiateTextFieldDrag(float x, float y, long eventTime) { 6757 if (!inEditingMode()) { 6758 return; 6759 } 6760 mLastTouchX = Math.round(x + mWebTextView.getLeft() - mScrollX); 6761 mLastTouchY = Math.round(y + mWebTextView.getTop() - mScrollY); 6762 mLastTouchTime = eventTime; 6763 if (!mScroller.isFinished()) { 6764 abortAnimation(); 6765 mPrivateHandler.removeMessages(RESUME_WEBCORE_PRIORITY); 6766 } 6767 mSnapScrollMode = SNAP_NONE; 6768 mVelocityTracker = VelocityTracker.obtain(); 6769 mTouchMode = TOUCH_DRAG_START_MODE; 6770 } 6771 6772 /** 6773 * Given a motion event from the WebTextView, set its location to our 6774 * coordinates, and handle the event. 6775 */ 6776 /*package*/ boolean textFieldDrag(MotionEvent event) { 6777 if (!inEditingMode()) { 6778 return false; 6779 } 6780 mDragFromTextInput = true; 6781 event.offsetLocation((float) (mWebTextView.getLeft() - mScrollX), 6782 (float) (mWebTextView.getTop() - mScrollY)); 6783 boolean result = onTouchEvent(event); 6784 mDragFromTextInput = false; 6785 return result; 6786 } 6787 6788 /** 6789 * Due a touch up from a WebTextView. This will be handled by webkit to 6790 * change the selection. 6791 * @param event MotionEvent in the WebTextView's coordinates. 6792 */ 6793 /*package*/ void touchUpOnTextField(MotionEvent event) { 6794 if (!inEditingMode()) { 6795 return; 6796 } 6797 int x = viewToContentX((int) event.getX() + mWebTextView.getLeft()); 6798 int y = viewToContentY((int) event.getY() + mWebTextView.getTop()); 6799 int slop = viewToContentDimension(mNavSlop); 6800 nativeMotionUp(x, y, slop); 6801 } 6802 6803 /** 6804 * Called when pressing the center key or trackball on a textfield. 6805 */ 6806 /*package*/ void centerKeyPressOnTextField() { 6807 mWebViewCore.sendMessage(EventHub.CLICK, nativeCursorFramePointer(), 6808 nativeCursorNodePointer()); 6809 } 6810 6811 private void doShortPress() { 6812 if (mNativeClass == 0) { 6813 return; 6814 } 6815 if (mPreventDefault == PREVENT_DEFAULT_YES) { 6816 return; 6817 } 6818 mTouchMode = TOUCH_DONE_MODE; 6819 switchOutDrawHistory(); 6820 // mLastTouchX and mLastTouchY are the point in the current viewport 6821 int contentX = viewToContentX(mLastTouchX + mScrollX); 6822 int contentY = viewToContentY(mLastTouchY + mScrollY); 6823 int slop = viewToContentDimension(mNavSlop); 6824 if (getSettings().supportTouchOnly()) { 6825 removeTouchHighlight(false); 6826 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 6827 // use "0" as generation id to inform WebKit to use the same x/y as 6828 // it used when processing GET_TOUCH_HIGHLIGHT_RECTS 6829 touchUpData.mMoveGeneration = 0; 6830 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 6831 } else if (nativePointInNavCache(contentX, contentY, slop)) { 6832 WebViewCore.MotionUpData motionUpData = new WebViewCore 6833 .MotionUpData(); 6834 motionUpData.mFrame = nativeCacheHitFramePointer(); 6835 motionUpData.mNode = nativeCacheHitNodePointer(); 6836 motionUpData.mBounds = nativeCacheHitNodeBounds(); 6837 motionUpData.mX = contentX; 6838 motionUpData.mY = contentY; 6839 mWebViewCore.sendMessageAtFrontOfQueue(EventHub.VALID_NODE_BOUNDS, 6840 motionUpData); 6841 } else { 6842 doMotionUp(contentX, contentY); 6843 } 6844 } 6845 6846 private void doMotionUp(int contentX, int contentY) { 6847 int slop = viewToContentDimension(mNavSlop); 6848 if (nativeMotionUp(contentX, contentY, slop) && mLogEvent) { 6849 EventLog.writeEvent(EventLogTags.BROWSER_SNAP_CENTER); 6850 } 6851 if (nativeHasCursorNode() && !nativeCursorIsTextInput()) { 6852 playSoundEffect(SoundEffectConstants.CLICK); 6853 } 6854 } 6855 6856 /** 6857 * Returns plugin bounds if x/y in content coordinates corresponds to a 6858 * plugin. Otherwise a NULL rectangle is returned. 6859 */ 6860 Rect getPluginBounds(int x, int y) { 6861 int slop = viewToContentDimension(mNavSlop); 6862 if (nativePointInNavCache(x, y, slop) && nativeCacheHitIsPlugin()) { 6863 return nativeCacheHitNodeBounds(); 6864 } else { 6865 return null; 6866 } 6867 } 6868 6869 /* 6870 * Return true if the rect (e.g. plugin) is fully visible and maximized 6871 * inside the WebView. 6872 */ 6873 boolean isRectFitOnScreen(Rect rect) { 6874 final int rectWidth = rect.width(); 6875 final int rectHeight = rect.height(); 6876 final int viewWidth = getViewWidth(); 6877 final int viewHeight = getViewHeightWithTitle(); 6878 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight / rectHeight); 6879 scale = mZoomManager.computeScaleWithLimits(scale); 6880 return !mZoomManager.willScaleTriggerZoom(scale) 6881 && contentToViewX(rect.left) >= mScrollX 6882 && contentToViewX(rect.right) <= mScrollX + viewWidth 6883 && contentToViewY(rect.top) >= mScrollY 6884 && contentToViewY(rect.bottom) <= mScrollY + viewHeight; 6885 } 6886 6887 /* 6888 * Maximize and center the rectangle, specified in the document coordinate 6889 * space, inside the WebView. If the zoom doesn't need to be changed, do an 6890 * animated scroll to center it. If the zoom needs to be changed, find the 6891 * zoom center and do a smooth zoom transition. The rect is in document 6892 * coordinates 6893 */ 6894 void centerFitRect(Rect rect) { 6895 final int rectWidth = rect.width(); 6896 final int rectHeight = rect.height(); 6897 final int viewWidth = getViewWidth(); 6898 final int viewHeight = getViewHeightWithTitle(); 6899 float scale = Math.min((float) viewWidth / rectWidth, (float) viewHeight 6900 / rectHeight); 6901 scale = mZoomManager.computeScaleWithLimits(scale); 6902 if (!mZoomManager.willScaleTriggerZoom(scale)) { 6903 pinScrollTo(contentToViewX(rect.left + rectWidth / 2) - viewWidth / 2, 6904 contentToViewY(rect.top + rectHeight / 2) - viewHeight / 2, 6905 true, 0); 6906 } else { 6907 float actualScale = mZoomManager.getScale(); 6908 float oldScreenX = rect.left * actualScale - mScrollX; 6909 float rectViewX = rect.left * scale; 6910 float rectViewWidth = rectWidth * scale; 6911 float newMaxWidth = mContentWidth * scale; 6912 float newScreenX = (viewWidth - rectViewWidth) / 2; 6913 // pin the newX to the WebView 6914 if (newScreenX > rectViewX) { 6915 newScreenX = rectViewX; 6916 } else if (newScreenX > (newMaxWidth - rectViewX - rectViewWidth)) { 6917 newScreenX = viewWidth - (newMaxWidth - rectViewX); 6918 } 6919 float zoomCenterX = (oldScreenX * scale - newScreenX * actualScale) 6920 / (scale - actualScale); 6921 float oldScreenY = rect.top * actualScale + getTitleHeight() 6922 - mScrollY; 6923 float rectViewY = rect.top * scale + getTitleHeight(); 6924 float rectViewHeight = rectHeight * scale; 6925 float newMaxHeight = mContentHeight * scale + getTitleHeight(); 6926 float newScreenY = (viewHeight - rectViewHeight) / 2; 6927 // pin the newY to the WebView 6928 if (newScreenY > rectViewY) { 6929 newScreenY = rectViewY; 6930 } else if (newScreenY > (newMaxHeight - rectViewY - rectViewHeight)) { 6931 newScreenY = viewHeight - (newMaxHeight - rectViewY); 6932 } 6933 float zoomCenterY = (oldScreenY * scale - newScreenY * actualScale) 6934 / (scale - actualScale); 6935 mZoomManager.setZoomCenter(zoomCenterX, zoomCenterY); 6936 mZoomManager.startZoomAnimation(scale, false); 6937 } 6938 } 6939 6940 // Called by JNI to handle a touch on a node representing an email address, 6941 // address, or phone number 6942 private void overrideLoading(String url) { 6943 mCallbackProxy.uiOverrideUrlLoading(url); 6944 } 6945 6946 @Override 6947 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 6948 // FIXME: If a subwindow is showing find, and the user touches the 6949 // background window, it can steal focus. 6950 if (mFindIsUp) return false; 6951 boolean result = false; 6952 if (inEditingMode()) { 6953 result = mWebTextView.requestFocus(direction, 6954 previouslyFocusedRect); 6955 } else { 6956 result = super.requestFocus(direction, previouslyFocusedRect); 6957 if (mWebViewCore.getSettings().getNeedInitialFocus() && !isInTouchMode()) { 6958 // For cases such as GMail, where we gain focus from a direction, 6959 // we want to move to the first available link. 6960 // FIXME: If there are no visible links, we may not want to 6961 int fakeKeyDirection = 0; 6962 switch(direction) { 6963 case View.FOCUS_UP: 6964 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_UP; 6965 break; 6966 case View.FOCUS_DOWN: 6967 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_DOWN; 6968 break; 6969 case View.FOCUS_LEFT: 6970 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_LEFT; 6971 break; 6972 case View.FOCUS_RIGHT: 6973 fakeKeyDirection = KeyEvent.KEYCODE_DPAD_RIGHT; 6974 break; 6975 default: 6976 return result; 6977 } 6978 if (mNativeClass != 0 && !nativeHasCursorNode()) { 6979 navHandledKey(fakeKeyDirection, 1, true, 0); 6980 } 6981 } 6982 } 6983 return result; 6984 } 6985 6986 @Override 6987 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 6988 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 6989 6990 int heightMode = MeasureSpec.getMode(heightMeasureSpec); 6991 int heightSize = MeasureSpec.getSize(heightMeasureSpec); 6992 int widthMode = MeasureSpec.getMode(widthMeasureSpec); 6993 int widthSize = MeasureSpec.getSize(widthMeasureSpec); 6994 6995 int measuredHeight = heightSize; 6996 int measuredWidth = widthSize; 6997 6998 // Grab the content size from WebViewCore. 6999 int contentHeight = contentToViewDimension(mContentHeight); 7000 int contentWidth = contentToViewDimension(mContentWidth); 7001 7002// Log.d(LOGTAG, "------- measure " + heightMode); 7003 7004 if (heightMode != MeasureSpec.EXACTLY) { 7005 mHeightCanMeasure = true; 7006 measuredHeight = contentHeight; 7007 if (heightMode == MeasureSpec.AT_MOST) { 7008 // If we are larger than the AT_MOST height, then our height can 7009 // no longer be measured and we should scroll internally. 7010 if (measuredHeight > heightSize) { 7011 measuredHeight = heightSize; 7012 mHeightCanMeasure = false; 7013 } else if (measuredHeight < heightSize) { 7014 measuredHeight |= MEASURED_STATE_TOO_SMALL; 7015 } 7016 } 7017 } else { 7018 mHeightCanMeasure = false; 7019 } 7020 if (mNativeClass != 0) { 7021 nativeSetHeightCanMeasure(mHeightCanMeasure); 7022 } 7023 // For the width, always use the given size unless unspecified. 7024 if (widthMode == MeasureSpec.UNSPECIFIED) { 7025 mWidthCanMeasure = true; 7026 measuredWidth = contentWidth; 7027 } else { 7028 if (measuredWidth < contentWidth) { 7029 measuredWidth |= MEASURED_STATE_TOO_SMALL; 7030 } 7031 mWidthCanMeasure = false; 7032 } 7033 7034 synchronized (this) { 7035 setMeasuredDimension(measuredWidth, measuredHeight); 7036 } 7037 } 7038 7039 @Override 7040 public boolean requestChildRectangleOnScreen(View child, 7041 Rect rect, 7042 boolean immediate) { 7043 if (mNativeClass == 0) { 7044 return false; 7045 } 7046 // don't scroll while in zoom animation. When it is done, we will adjust 7047 // the necessary components (e.g., WebTextView if it is in editing mode) 7048 if (mZoomManager.isFixedLengthAnimationInProgress()) { 7049 return false; 7050 } 7051 7052 rect.offset(child.getLeft() - child.getScrollX(), 7053 child.getTop() - child.getScrollY()); 7054 7055 Rect content = new Rect(viewToContentX(mScrollX), 7056 viewToContentY(mScrollY), 7057 viewToContentX(mScrollX + getWidth() 7058 - getVerticalScrollbarWidth()), 7059 viewToContentY(mScrollY + getViewHeightWithTitle())); 7060 content = nativeSubtractLayers(content); 7061 int screenTop = contentToViewY(content.top); 7062 int screenBottom = contentToViewY(content.bottom); 7063 int height = screenBottom - screenTop; 7064 int scrollYDelta = 0; 7065 7066 if (rect.bottom > screenBottom) { 7067 int oneThirdOfScreenHeight = height / 3; 7068 if (rect.height() > 2 * oneThirdOfScreenHeight) { 7069 // If the rectangle is too tall to fit in the bottom two thirds 7070 // of the screen, place it at the top. 7071 scrollYDelta = rect.top - screenTop; 7072 } else { 7073 // If the rectangle will still fit on screen, we want its 7074 // top to be in the top third of the screen. 7075 scrollYDelta = rect.top - (screenTop + oneThirdOfScreenHeight); 7076 } 7077 } else if (rect.top < screenTop) { 7078 scrollYDelta = rect.top - screenTop; 7079 } 7080 7081 int screenLeft = contentToViewX(content.left); 7082 int screenRight = contentToViewX(content.right); 7083 int width = screenRight - screenLeft; 7084 int scrollXDelta = 0; 7085 7086 if (rect.right > screenRight && rect.left > screenLeft) { 7087 if (rect.width() > width) { 7088 scrollXDelta += (rect.left - screenLeft); 7089 } else { 7090 scrollXDelta += (rect.right - screenRight); 7091 } 7092 } else if (rect.left < screenLeft) { 7093 scrollXDelta -= (screenLeft - rect.left); 7094 } 7095 7096 if ((scrollYDelta | scrollXDelta) != 0) { 7097 return pinScrollBy(scrollXDelta, scrollYDelta, !immediate, 0); 7098 } 7099 7100 return false; 7101 } 7102 7103 /* package */ void replaceTextfieldText(int oldStart, int oldEnd, 7104 String replace, int newStart, int newEnd) { 7105 WebViewCore.ReplaceTextData arg = new WebViewCore.ReplaceTextData(); 7106 arg.mReplace = replace; 7107 arg.mNewStart = newStart; 7108 arg.mNewEnd = newEnd; 7109 mTextGeneration++; 7110 arg.mTextGeneration = mTextGeneration; 7111 mWebViewCore.sendMessage(EventHub.REPLACE_TEXT, oldStart, oldEnd, arg); 7112 } 7113 7114 /* package */ void passToJavaScript(String currentText, KeyEvent event) { 7115 WebViewCore.JSKeyData arg = new WebViewCore.JSKeyData(); 7116 arg.mEvent = event; 7117 arg.mCurrentText = currentText; 7118 // Increase our text generation number, and pass it to webcore thread 7119 mTextGeneration++; 7120 mWebViewCore.sendMessage(EventHub.PASS_TO_JS, mTextGeneration, 0, arg); 7121 // WebKit's document state is not saved until about to leave the page. 7122 // To make sure the host application, like Browser, has the up to date 7123 // document state when it goes to background, we force to save the 7124 // document state. 7125 mWebViewCore.removeMessages(EventHub.SAVE_DOCUMENT_STATE); 7126 mWebViewCore.sendMessageDelayed(EventHub.SAVE_DOCUMENT_STATE, 7127 cursorData(), 1000); 7128 } 7129 7130 /* package */ synchronized WebViewCore getWebViewCore() { 7131 return mWebViewCore; 7132 } 7133 7134 /** 7135 * Used only by TouchEventQueue to store pending touch events. 7136 */ 7137 private static class QueuedTouch { 7138 long mSequence; 7139 MotionEvent mEvent; // Optional 7140 TouchEventData mTed; // Optional 7141 7142 QueuedTouch mNext; 7143 7144 public QueuedTouch set(TouchEventData ted) { 7145 mSequence = ted.mSequence; 7146 mTed = ted; 7147 mEvent = null; 7148 mNext = null; 7149 return this; 7150 } 7151 7152 public QueuedTouch set(MotionEvent ev, long sequence) { 7153 mEvent = MotionEvent.obtain(ev); 7154 mSequence = sequence; 7155 mTed = null; 7156 mNext = null; 7157 return this; 7158 } 7159 7160 public QueuedTouch add(QueuedTouch other) { 7161 if (other.mSequence < mSequence) { 7162 other.mNext = this; 7163 return other; 7164 } 7165 7166 QueuedTouch insertAt = this; 7167 while (insertAt.mNext != null && insertAt.mNext.mSequence < other.mSequence) { 7168 insertAt = insertAt.mNext; 7169 } 7170 other.mNext = insertAt.mNext; 7171 insertAt.mNext = other; 7172 return this; 7173 } 7174 } 7175 7176 /** 7177 * WebView handles touch events asynchronously since some events must be passed to WebKit 7178 * for potentially slower processing. TouchEventQueue serializes touch events regardless 7179 * of which path they take to ensure that no events are ever processed out of order 7180 * by WebView. 7181 */ 7182 private class TouchEventQueue { 7183 private long mNextTouchSequence = Long.MIN_VALUE + 1; 7184 private long mLastHandledTouchSequence = Long.MIN_VALUE; 7185 private long mIgnoreUntilSequence = Long.MIN_VALUE; 7186 private QueuedTouch mTouchEventQueue; 7187 private QueuedTouch mQueuedTouchRecycleBin; 7188 private int mQueuedTouchRecycleCount; 7189 private static final int MAX_RECYCLED_QUEUED_TOUCH = 15; 7190 7191 // milliseconds until we abandon hope of getting all of a previous gesture 7192 private static final int QUEUED_GESTURE_TIMEOUT = 2000; 7193 7194 private QueuedTouch obtainQueuedTouch() { 7195 if (mQueuedTouchRecycleBin != null) { 7196 QueuedTouch result = mQueuedTouchRecycleBin; 7197 mQueuedTouchRecycleBin = result.mNext; 7198 mQueuedTouchRecycleCount--; 7199 return result; 7200 } 7201 return new QueuedTouch(); 7202 } 7203 7204 /** 7205 * Allow events with any currently missing sequence numbers to be skipped in processing. 7206 */ 7207 public void ignoreCurrentlyMissingEvents() { 7208 mIgnoreUntilSequence = mNextTouchSequence; 7209 } 7210 7211 private void recycleQueuedTouch(QueuedTouch qd) { 7212 if (mQueuedTouchRecycleCount < MAX_RECYCLED_QUEUED_TOUCH) { 7213 qd.mNext = mQueuedTouchRecycleBin; 7214 mQueuedTouchRecycleBin = qd; 7215 mQueuedTouchRecycleCount++; 7216 } 7217 } 7218 7219 /** 7220 * Reset the touch event queue. This will dump any pending events 7221 * and reset the sequence numbering. 7222 */ 7223 public void reset() { 7224 mNextTouchSequence = Long.MIN_VALUE + 1; 7225 mLastHandledTouchSequence = Long.MIN_VALUE; 7226 mIgnoreUntilSequence = Long.MIN_VALUE; 7227 while (mTouchEventQueue != null) { 7228 QueuedTouch recycleMe = mTouchEventQueue; 7229 mTouchEventQueue = mTouchEventQueue.mNext; 7230 recycleQueuedTouch(recycleMe); 7231 } 7232 } 7233 7234 /** 7235 * Return the next valid sequence number for tagging incoming touch events. 7236 * @return The next touch event sequence number 7237 */ 7238 public long nextTouchSequence() { 7239 return mNextTouchSequence++; 7240 } 7241 7242 /** 7243 * Enqueue a touch event in the form of TouchEventData. 7244 * The sequence number will be read from the mSequence field of the argument. 7245 * 7246 * If the touch event's sequence number is the next in line to be processed, it will 7247 * be handled before this method returns. Any subsequent events that have already 7248 * been queued will also be processed in their proper order. 7249 * 7250 * @param ted Touch data to be processed in order. 7251 */ 7252 public void enqueueTouchEvent(TouchEventData ted) { 7253 if (ted.mSequence < mLastHandledTouchSequence) { 7254 // Stale event and we already moved on; drop it. (Should not be common.) 7255 Log.w(LOGTAG, "Stale touch event " + MotionEvent.actionToString(ted.mAction) + 7256 " received from webcore; ignoring"); 7257 return; 7258 } 7259 7260 dropStaleGestures(ted.mMotionEvent, ted.mSequence); 7261 7262 if (mLastHandledTouchSequence + 1 == ted.mSequence) { 7263 handleQueuedTouchEventData(ted); 7264 7265 mLastHandledTouchSequence++; 7266 7267 // Do we have any more? Run them if so. 7268 QueuedTouch qd = mTouchEventQueue; 7269 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7270 handleQueuedTouch(qd); 7271 QueuedTouch recycleMe = qd; 7272 qd = qd.mNext; 7273 recycleQueuedTouch(recycleMe); 7274 mLastHandledTouchSequence++; 7275 } 7276 mTouchEventQueue = qd; 7277 } else { 7278 QueuedTouch qd = obtainQueuedTouch().set(ted); 7279 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7280 } 7281 } 7282 7283 /** 7284 * Enqueue a touch event in the form of a MotionEvent from the framework. 7285 * 7286 * If the touch event's sequence number is the next in line to be processed, it will 7287 * be handled before this method returns. Any subsequent events that have already 7288 * been queued will also be processed in their proper order. 7289 * 7290 * @param ev MotionEvent to be processed in order 7291 */ 7292 public void enqueueTouchEvent(MotionEvent ev) { 7293 final long sequence = nextTouchSequence(); 7294 7295 dropStaleGestures(ev, sequence); 7296 7297 if (mLastHandledTouchSequence + 1 == sequence) { 7298 handleQueuedMotionEvent(ev); 7299 7300 mLastHandledTouchSequence++; 7301 7302 // Do we have any more? Run them if so. 7303 QueuedTouch qd = mTouchEventQueue; 7304 while (qd != null && qd.mSequence == mLastHandledTouchSequence + 1) { 7305 handleQueuedTouch(qd); 7306 QueuedTouch recycleMe = qd; 7307 qd = qd.mNext; 7308 recycleQueuedTouch(recycleMe); 7309 mLastHandledTouchSequence++; 7310 } 7311 mTouchEventQueue = qd; 7312 } else { 7313 QueuedTouch qd = obtainQueuedTouch().set(ev, sequence); 7314 mTouchEventQueue = mTouchEventQueue == null ? qd : mTouchEventQueue.add(qd); 7315 } 7316 } 7317 7318 private void dropStaleGestures(MotionEvent ev, long sequence) { 7319 if (mTouchEventQueue == null) return; 7320 7321 MotionEvent nextQueueEvent = mTouchEventQueue.mTed != null ? 7322 mTouchEventQueue.mTed.mMotionEvent : mTouchEventQueue.mEvent; 7323 7324 if (ev != null && ev.getAction() == MotionEvent.ACTION_DOWN && nextQueueEvent != null) { 7325 long eventTime = ev.getEventTime(); 7326 long nextQueueTime = nextQueueEvent.getEventTime(); 7327 if (eventTime > nextQueueTime + QUEUED_GESTURE_TIMEOUT) { 7328 Log.w(LOGTAG, "Got ACTION_DOWN but still waiting on stale event. " + 7329 "Ignoring previous queued events."); 7330 QueuedTouch qd = mTouchEventQueue; 7331 while (qd != null && qd.mSequence < sequence) { 7332 QueuedTouch recycleMe = qd; 7333 qd = qd.mNext; 7334 recycleQueuedTouch(recycleMe); 7335 } 7336 mTouchEventQueue = qd; 7337 mLastHandledTouchSequence = sequence - 1; 7338 } 7339 } 7340 7341 if (mIgnoreUntilSequence > mLastHandledTouchSequence) { 7342 QueuedTouch qd = mTouchEventQueue; 7343 while (qd != null && qd.mSequence < mIgnoreUntilSequence && 7344 qd.mSequence < sequence) { 7345 mLastHandledTouchSequence = qd.mSequence; 7346 QueuedTouch recycleMe = qd; 7347 qd = qd.mNext; 7348 recycleQueuedTouch(recycleMe); 7349 } 7350 mTouchEventQueue = qd; 7351 } 7352 } 7353 7354 private void handleQueuedTouch(QueuedTouch qt) { 7355 if (qt.mTed != null) { 7356 handleQueuedTouchEventData(qt.mTed); 7357 } else { 7358 handleQueuedMotionEvent(qt.mEvent); 7359 qt.mEvent.recycle(); 7360 } 7361 } 7362 7363 private void handleQueuedMotionEvent(MotionEvent ev) { 7364 int action = ev.getActionMasked(); 7365 if (ev.getPointerCount() > 1) { // Multi-touch 7366 handleMultiTouchInWebView(ev); 7367 } else { 7368 final ScaleGestureDetector detector = mZoomManager.getMultiTouchGestureDetector(); 7369 if (detector != null && mPreventDefault != PREVENT_DEFAULT_YES) { 7370 // ScaleGestureDetector needs a consistent event stream to operate properly. 7371 // It won't take any action with fewer than two pointers, but it needs to 7372 // update internal bookkeeping state. 7373 detector.onTouchEvent(ev); 7374 } 7375 7376 handleTouchEventCommon(ev, action, Math.round(ev.getX()), Math.round(ev.getY())); 7377 } 7378 } 7379 7380 private void handleQueuedTouchEventData(TouchEventData ted) { 7381 if (!ted.mReprocess) { 7382 if (ted.mAction == MotionEvent.ACTION_DOWN 7383 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) { 7384 // if prevent default is called from WebCore, UI 7385 // will not handle the rest of the touch events any 7386 // more. 7387 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7388 : PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN; 7389 } else if (ted.mAction == MotionEvent.ACTION_MOVE 7390 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN) { 7391 // the return for the first ACTION_MOVE will decide 7392 // whether UI will handle touch or not. Currently no 7393 // support for alternating prevent default 7394 mPreventDefault = ted.mNativeResult ? PREVENT_DEFAULT_YES 7395 : PREVENT_DEFAULT_NO; 7396 } 7397 if (mPreventDefault == PREVENT_DEFAULT_YES) { 7398 mTouchHighlightRegion.setEmpty(); 7399 } 7400 } else { 7401 if (ted.mPoints.length > 1) { // multi-touch 7402 if (!ted.mNativeResult && mPreventDefault != PREVENT_DEFAULT_YES) { 7403 mPreventDefault = PREVENT_DEFAULT_NO; 7404 handleMultiTouchInWebView(ted.mMotionEvent); 7405 } else { 7406 mPreventDefault = PREVENT_DEFAULT_YES; 7407 } 7408 return; 7409 } 7410 7411 // prevent default is not called in WebCore, so the 7412 // message needs to be reprocessed in UI 7413 if (!ted.mNativeResult) { 7414 // Following is for single touch. 7415 switch (ted.mAction) { 7416 case MotionEvent.ACTION_DOWN: 7417 mLastDeferTouchX = contentToViewX(ted.mPoints[0].x) 7418 - mScrollX; 7419 mLastDeferTouchY = contentToViewY(ted.mPoints[0].y) 7420 - mScrollY; 7421 mDeferTouchMode = TOUCH_INIT_MODE; 7422 break; 7423 case MotionEvent.ACTION_MOVE: { 7424 // no snapping in defer process 7425 int x = contentToViewX(ted.mPoints[0].x) - mScrollX; 7426 int y = contentToViewY(ted.mPoints[0].y) - mScrollY; 7427 if (mDeferTouchMode != TOUCH_DRAG_MODE) { 7428 mDeferTouchMode = TOUCH_DRAG_MODE; 7429 mLastDeferTouchX = x; 7430 mLastDeferTouchY = y; 7431 startScrollingLayer(x, y); 7432 startDrag(); 7433 } 7434 int deltaX = pinLocX((int) (mScrollX 7435 + mLastDeferTouchX - x)) 7436 - mScrollX; 7437 int deltaY = pinLocY((int) (mScrollY 7438 + mLastDeferTouchY - y)) 7439 - mScrollY; 7440 doDrag(deltaX, deltaY); 7441 if (deltaX != 0) mLastDeferTouchX = x; 7442 if (deltaY != 0) mLastDeferTouchY = y; 7443 break; 7444 } 7445 case MotionEvent.ACTION_UP: 7446 case MotionEvent.ACTION_CANCEL: 7447 if (mDeferTouchMode == TOUCH_DRAG_MODE) { 7448 // no fling in defer process 7449 mScroller.springBack(mScrollX, mScrollY, 0, 7450 computeMaxScrollX(), 0, 7451 computeMaxScrollY()); 7452 invalidate(); 7453 WebViewCore.resumePriority(); 7454 WebViewCore.resumeUpdatePicture(mWebViewCore); 7455 } 7456 mDeferTouchMode = TOUCH_DONE_MODE; 7457 break; 7458 case WebViewCore.ACTION_DOUBLETAP: 7459 // doDoubleTap() needs mLastTouchX/Y as anchor 7460 mLastTouchX = contentToViewX(ted.mPoints[0].x) - mScrollX; 7461 mLastTouchY = contentToViewY(ted.mPoints[0].y) - mScrollY; 7462 mZoomManager.handleDoubleTap(mLastTouchX, mLastTouchY); 7463 mDeferTouchMode = TOUCH_DONE_MODE; 7464 break; 7465 case WebViewCore.ACTION_LONGPRESS: 7466 HitTestResult hitTest = getHitTestResult(); 7467 if (hitTest != null && hitTest.mType 7468 != HitTestResult.UNKNOWN_TYPE) { 7469 performLongClick(); 7470 } 7471 mDeferTouchMode = TOUCH_DONE_MODE; 7472 break; 7473 } 7474 } 7475 } 7476 } 7477 } 7478 7479 //------------------------------------------------------------------------- 7480 // Methods can be called from a separate thread, like WebViewCore 7481 // If it needs to call the View system, it has to send message. 7482 //------------------------------------------------------------------------- 7483 7484 /** 7485 * General handler to receive message coming from webkit thread 7486 */ 7487 class PrivateHandler extends Handler { 7488 @Override 7489 public void handleMessage(Message msg) { 7490 // exclude INVAL_RECT_MSG_ID since it is frequently output 7491 if (DebugFlags.WEB_VIEW && msg.what != INVAL_RECT_MSG_ID) { 7492 if (msg.what >= FIRST_PRIVATE_MSG_ID 7493 && msg.what <= LAST_PRIVATE_MSG_ID) { 7494 Log.v(LOGTAG, HandlerPrivateDebugString[msg.what 7495 - FIRST_PRIVATE_MSG_ID]); 7496 } else if (msg.what >= FIRST_PACKAGE_MSG_ID 7497 && msg.what <= LAST_PACKAGE_MSG_ID) { 7498 Log.v(LOGTAG, HandlerPackageDebugString[msg.what 7499 - FIRST_PACKAGE_MSG_ID]); 7500 } else { 7501 Log.v(LOGTAG, Integer.toString(msg.what)); 7502 } 7503 } 7504 if (mWebViewCore == null) { 7505 // after WebView's destroy() is called, skip handling messages. 7506 return; 7507 } 7508 switch (msg.what) { 7509 case REMEMBER_PASSWORD: { 7510 mDatabase.setUsernamePassword( 7511 msg.getData().getString("host"), 7512 msg.getData().getString("username"), 7513 msg.getData().getString("password")); 7514 ((Message) msg.obj).sendToTarget(); 7515 break; 7516 } 7517 case NEVER_REMEMBER_PASSWORD: { 7518 mDatabase.setUsernamePassword( 7519 msg.getData().getString("host"), null, null); 7520 ((Message) msg.obj).sendToTarget(); 7521 break; 7522 } 7523 case PREVENT_DEFAULT_TIMEOUT: { 7524 // if timeout happens, cancel it so that it won't block UI 7525 // to continue handling touch events 7526 if ((msg.arg1 == MotionEvent.ACTION_DOWN 7527 && mPreventDefault == PREVENT_DEFAULT_MAYBE_YES) 7528 || (msg.arg1 == MotionEvent.ACTION_MOVE 7529 && mPreventDefault == PREVENT_DEFAULT_NO_FROM_TOUCH_DOWN)) { 7530 cancelWebCoreTouchEvent( 7531 viewToContentX(mLastTouchX + mScrollX), 7532 viewToContentY(mLastTouchY + mScrollY), 7533 true); 7534 } 7535 break; 7536 } 7537 case SCROLL_SELECT_TEXT: { 7538 if (mAutoScrollX == 0 && mAutoScrollY == 0) { 7539 mSentAutoScrollMessage = false; 7540 break; 7541 } 7542 if (mScrollingLayer == 0) { 7543 pinScrollBy(mAutoScrollX, mAutoScrollY, true, 0); 7544 } else { 7545 mScrollingLayerRect.left += mAutoScrollX; 7546 mScrollingLayerRect.top += mAutoScrollY; 7547 nativeScrollLayer(mScrollingLayer, 7548 mScrollingLayerRect.left, 7549 mScrollingLayerRect.top); 7550 invalidate(); 7551 } 7552 sendEmptyMessageDelayed( 7553 SCROLL_SELECT_TEXT, SELECT_SCROLL_INTERVAL); 7554 break; 7555 } 7556 case SWITCH_TO_SHORTPRESS: { 7557 mInitialHitTestResult = null; // set by updateSelection() 7558 if (mTouchMode == TOUCH_INIT_MODE) { 7559 if (!getSettings().supportTouchOnly() 7560 && mPreventDefault != PREVENT_DEFAULT_YES) { 7561 mTouchMode = TOUCH_SHORTPRESS_START_MODE; 7562 updateSelection(); 7563 } else { 7564 // set to TOUCH_SHORTPRESS_MODE so that it won't 7565 // trigger double tap any more 7566 mTouchMode = TOUCH_SHORTPRESS_MODE; 7567 } 7568 } else if (mTouchMode == TOUCH_DOUBLE_TAP_MODE) { 7569 mTouchMode = TOUCH_DONE_MODE; 7570 } 7571 break; 7572 } 7573 case SWITCH_TO_LONGPRESS: { 7574 if (getSettings().supportTouchOnly()) { 7575 removeTouchHighlight(false); 7576 } 7577 if (inFullScreenMode() || mDeferTouchProcess) { 7578 TouchEventData ted = new TouchEventData(); 7579 ted.mAction = WebViewCore.ACTION_LONGPRESS; 7580 ted.mIds = new int[1]; 7581 ted.mIds[0] = 0; 7582 ted.mPoints = new Point[1]; 7583 ted.mPoints[0] = new Point(viewToContentX(mLastTouchX + mScrollX), 7584 viewToContentY(mLastTouchY + mScrollY)); 7585 // metaState for long press is tricky. Should it be the 7586 // state when the press started or when the press was 7587 // released? Or some intermediary key state? For 7588 // simplicity for now, we don't set it. 7589 ted.mMetaState = 0; 7590 ted.mReprocess = mDeferTouchProcess; 7591 ted.mNativeLayer = nativeScrollableLayer( 7592 ted.mPoints[0].x, ted.mPoints[0].y, 7593 ted.mNativeLayerRect, null); 7594 ted.mSequence = mTouchEventQueue.nextTouchSequence(); 7595 mWebViewCore.sendMessage(EventHub.TOUCH_EVENT, ted); 7596 } else if (mPreventDefault != PREVENT_DEFAULT_YES) { 7597 mTouchMode = TOUCH_DONE_MODE; 7598 performLongClick(); 7599 } 7600 break; 7601 } 7602 case RELEASE_SINGLE_TAP: { 7603 doShortPress(); 7604 break; 7605 } 7606 case SCROLL_TO_MSG_ID: { 7607 // arg1 = animate, arg2 = onlyIfImeIsShowing 7608 // obj = Point(x, y) 7609 if (msg.arg2 == 1) { 7610 // This scroll is intended to bring the textfield into 7611 // view, but is only necessary if the IME is showing 7612 InputMethodManager imm = InputMethodManager.peekInstance(); 7613 if (imm == null || !imm.isAcceptingText() 7614 || (!imm.isActive(WebView.this) && (!inEditingMode() 7615 || !imm.isActive(mWebTextView)))) { 7616 break; 7617 } 7618 } 7619 final Point p = (Point) msg.obj; 7620 if (msg.arg1 == 1) { 7621 spawnContentScrollTo(p.x, p.y); 7622 } else { 7623 setContentScrollTo(p.x, p.y); 7624 } 7625 break; 7626 } 7627 case UPDATE_ZOOM_RANGE: { 7628 WebViewCore.ViewState viewState = (WebViewCore.ViewState) msg.obj; 7629 // mScrollX contains the new minPrefWidth 7630 mZoomManager.updateZoomRange(viewState, getViewWidth(), viewState.mScrollX); 7631 break; 7632 } 7633 case REPLACE_BASE_CONTENT: { 7634 nativeReplaceBaseContent(msg.arg1); 7635 break; 7636 } 7637 case NEW_PICTURE_MSG_ID: { 7638 // called for new content 7639 final WebViewCore.DrawData draw = (WebViewCore.DrawData) msg.obj; 7640 WebViewCore.ViewState viewState = draw.mViewState; 7641 boolean isPictureAfterFirstLayout = viewState != null; 7642 setBaseLayer(draw.mBaseLayer, draw.mInvalRegion, 7643 getSettings().getShowVisualIndicator(), 7644 isPictureAfterFirstLayout); 7645 final Point viewSize = draw.mViewSize; 7646 if (isPictureAfterFirstLayout) { 7647 // Reset the last sent data here since dealing with new page. 7648 mLastWidthSent = 0; 7649 mZoomManager.onFirstLayout(draw); 7650 if (!mDrawHistory) { 7651 // Do not send the scroll event for this particular 7652 // scroll message. Note that a scroll event may 7653 // still be fired if the user scrolls before the 7654 // message can be handled. 7655 mSendScrollEvent = false; 7656 setContentScrollTo(viewState.mScrollX, viewState.mScrollY); 7657 mSendScrollEvent = true; 7658 7659 // As we are on a new page, remove the WebTextView. This 7660 // is necessary for page loads driven by webkit, and in 7661 // particular when the user was on a password field, so 7662 // the WebTextView was visible. 7663 clearTextEntry(); 7664 } 7665 } 7666 7667 // We update the layout (i.e. request a layout from the 7668 // view system) if the last view size that we sent to 7669 // WebCore matches the view size of the picture we just 7670 // received in the fixed dimension. 7671 final boolean updateLayout = viewSize.x == mLastWidthSent 7672 && viewSize.y == mLastHeightSent; 7673 // Don't send scroll event for picture coming from webkit, 7674 // since the new picture may cause a scroll event to override 7675 // the saved history scroll position. 7676 mSendScrollEvent = false; 7677 recordNewContentSize(draw.mContentSize.x, 7678 draw.mContentSize.y, updateLayout); 7679 mSendScrollEvent = true; 7680 if (DebugFlags.WEB_VIEW) { 7681 Rect b = draw.mInvalRegion.getBounds(); 7682 Log.v(LOGTAG, "NEW_PICTURE_MSG_ID {" + 7683 b.left+","+b.top+","+b.right+","+b.bottom+"}"); 7684 } 7685 invalidateContentRect(draw.mInvalRegion.getBounds()); 7686 7687 if (mPictureListener != null) { 7688 mPictureListener.onNewPicture(WebView.this, capturePicture()); 7689 } 7690 7691 // update the zoom information based on the new picture 7692 mZoomManager.onNewPicture(draw); 7693 7694 if (draw.mFocusSizeChanged && inEditingMode()) { 7695 mFocusSizeChanged = true; 7696 } 7697 if (isPictureAfterFirstLayout) { 7698 mViewManager.postReadyToDrawAll(); 7699 } 7700 break; 7701 } 7702 case WEBCORE_INITIALIZED_MSG_ID: 7703 // nativeCreate sets mNativeClass to a non-zero value 7704 nativeCreate(msg.arg1); 7705 break; 7706 case UPDATE_TEXTFIELD_TEXT_MSG_ID: 7707 // Make sure that the textfield is currently focused 7708 // and representing the same node as the pointer. 7709 if (inEditingMode() && 7710 mWebTextView.isSameTextField(msg.arg1)) { 7711 if (msg.getData().getBoolean("password")) { 7712 Spannable text = (Spannable) mWebTextView.getText(); 7713 int start = Selection.getSelectionStart(text); 7714 int end = Selection.getSelectionEnd(text); 7715 mWebTextView.setInPassword(true); 7716 // Restore the selection, which may have been 7717 // ruined by setInPassword. 7718 Spannable pword = 7719 (Spannable) mWebTextView.getText(); 7720 Selection.setSelection(pword, start, end); 7721 // If the text entry has created more events, ignore 7722 // this one. 7723 } else if (msg.arg2 == mTextGeneration) { 7724 String text = (String) msg.obj; 7725 if (null == text) { 7726 text = ""; 7727 } 7728 mWebTextView.setTextAndKeepSelection(text); 7729 } 7730 } 7731 break; 7732 case REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID: 7733 displaySoftKeyboard(true); 7734 // fall through to UPDATE_TEXT_SELECTION_MSG_ID 7735 case UPDATE_TEXT_SELECTION_MSG_ID: 7736 updateTextSelectionFromMessage(msg.arg1, msg.arg2, 7737 (WebViewCore.TextSelectionData) msg.obj); 7738 break; 7739 case FORM_DID_BLUR: 7740 if (inEditingMode() 7741 && mWebTextView.isSameTextField(msg.arg1)) { 7742 hideSoftKeyboard(); 7743 } 7744 break; 7745 case RETURN_LABEL: 7746 if (inEditingMode() 7747 && mWebTextView.isSameTextField(msg.arg1)) { 7748 mWebTextView.setHint((String) msg.obj); 7749 InputMethodManager imm 7750 = InputMethodManager.peekInstance(); 7751 // The hint is propagated to the IME in 7752 // onCreateInputConnection. If the IME is already 7753 // active, restart it so that its hint text is updated. 7754 if (imm != null && imm.isActive(mWebTextView)) { 7755 imm.restartInput(mWebTextView); 7756 } 7757 } 7758 break; 7759 case UNHANDLED_NAV_KEY: 7760 navHandledKey(msg.arg1, 1, false, 0); 7761 break; 7762 case UPDATE_TEXT_ENTRY_MSG_ID: 7763 // this is sent after finishing resize in WebViewCore. Make 7764 // sure the text edit box is still on the screen. 7765 if (inEditingMode() && nativeCursorIsTextInput()) { 7766 rebuildWebTextView(); 7767 } 7768 break; 7769 case CLEAR_TEXT_ENTRY: 7770 clearTextEntry(); 7771 break; 7772 case INVAL_RECT_MSG_ID: { 7773 Rect r = (Rect)msg.obj; 7774 if (r == null) { 7775 invalidate(); 7776 } else { 7777 // we need to scale r from content into view coords, 7778 // which viewInvalidate() does for us 7779 viewInvalidate(r.left, r.top, r.right, r.bottom); 7780 } 7781 break; 7782 } 7783 case REQUEST_FORM_DATA: 7784 AutoCompleteAdapter adapter = (AutoCompleteAdapter) msg.obj; 7785 if (mWebTextView.isSameTextField(msg.arg1)) { 7786 mWebTextView.setAdapterCustom(adapter); 7787 } 7788 break; 7789 case RESUME_WEBCORE_PRIORITY: 7790 WebViewCore.resumePriority(); 7791 WebViewCore.resumeUpdatePicture(mWebViewCore); 7792 break; 7793 7794 case LONG_PRESS_CENTER: 7795 // as this is shared by keydown and trackballdown, reset all 7796 // the states 7797 mGotCenterDown = false; 7798 mTrackballDown = false; 7799 performLongClick(); 7800 break; 7801 7802 case WEBCORE_NEED_TOUCH_EVENTS: 7803 mForwardTouchEvents = (msg.arg1 != 0); 7804 break; 7805 7806 case PREVENT_TOUCH_ID: 7807 if (inFullScreenMode()) { 7808 break; 7809 } 7810 TouchEventData ted = (TouchEventData) msg.obj; 7811 7812 // WebCore is responding to us; remove pending timeout. 7813 // It will be re-posted when needed. 7814 removeMessages(PREVENT_DEFAULT_TIMEOUT); 7815 7816 mTouchEventQueue.enqueueTouchEvent(ted); 7817 break; 7818 7819 case REQUEST_KEYBOARD: 7820 if (msg.arg1 == 0) { 7821 hideSoftKeyboard(); 7822 } else { 7823 displaySoftKeyboard(false); 7824 } 7825 break; 7826 7827 case FIND_AGAIN: 7828 // Ignore if find has been dismissed. 7829 if (mFindIsUp && mFindCallback != null) { 7830 mFindCallback.findAll(); 7831 } 7832 break; 7833 7834 case DRAG_HELD_MOTIONLESS: 7835 mHeldMotionless = MOTIONLESS_TRUE; 7836 invalidate(); 7837 // fall through to keep scrollbars awake 7838 7839 case AWAKEN_SCROLL_BARS: 7840 if (mTouchMode == TOUCH_DRAG_MODE 7841 && mHeldMotionless == MOTIONLESS_TRUE) { 7842 awakenScrollBars(ViewConfiguration 7843 .getScrollDefaultDelay(), false); 7844 mPrivateHandler.sendMessageDelayed(mPrivateHandler 7845 .obtainMessage(AWAKEN_SCROLL_BARS), 7846 ViewConfiguration.getScrollDefaultDelay()); 7847 } 7848 break; 7849 7850 case DO_MOTION_UP: 7851 doMotionUp(msg.arg1, msg.arg2); 7852 break; 7853 7854 case SCREEN_ON: 7855 setKeepScreenOn(msg.arg1 == 1); 7856 break; 7857 7858 case ENTER_FULLSCREEN_VIDEO: 7859 int layerId = msg.arg1; 7860 Log.v(LOGTAG, "Display the video layer " + layerId + " fullscreen"); 7861 break; 7862 7863 case SHOW_FULLSCREEN: { 7864 View view = (View) msg.obj; 7865 int npp = msg.arg1; 7866 7867 if (inFullScreenMode()) { 7868 Log.w(LOGTAG, "Should not have another full screen."); 7869 dismissFullScreenMode(); 7870 } 7871 mFullScreenHolder = new PluginFullScreenHolder(WebView.this, npp); 7872 mFullScreenHolder.setContentView(view); 7873 mFullScreenHolder.setCancelable(false); 7874 mFullScreenHolder.setCanceledOnTouchOutside(false); 7875 mFullScreenHolder.show(); 7876 7877 break; 7878 } 7879 case HIDE_FULLSCREEN: 7880 dismissFullScreenMode(); 7881 break; 7882 7883 case DOM_FOCUS_CHANGED: 7884 if (inEditingMode()) { 7885 nativeClearCursor(); 7886 rebuildWebTextView(); 7887 } 7888 break; 7889 7890 case SHOW_RECT_MSG_ID: { 7891 WebViewCore.ShowRectData data = (WebViewCore.ShowRectData) msg.obj; 7892 int x = mScrollX; 7893 int left = contentToViewX(data.mLeft); 7894 int width = contentToViewDimension(data.mWidth); 7895 int maxWidth = contentToViewDimension(data.mContentWidth); 7896 int viewWidth = getViewWidth(); 7897 if (width < viewWidth) { 7898 // center align 7899 x += left + width / 2 - mScrollX - viewWidth / 2; 7900 } else { 7901 x += (int) (left + data.mXPercentInDoc * width 7902 - mScrollX - data.mXPercentInView * viewWidth); 7903 } 7904 if (DebugFlags.WEB_VIEW) { 7905 Log.v(LOGTAG, "showRectMsg=(left=" + left + ",width=" + 7906 width + ",maxWidth=" + maxWidth + 7907 ",viewWidth=" + viewWidth + ",x=" 7908 + x + ",xPercentInDoc=" + data.mXPercentInDoc + 7909 ",xPercentInView=" + data.mXPercentInView+ ")"); 7910 } 7911 // use the passing content width to cap x as the current 7912 // mContentWidth may not be updated yet 7913 x = Math.max(0, 7914 (Math.min(maxWidth, x + viewWidth)) - viewWidth); 7915 int top = contentToViewY(data.mTop); 7916 int height = contentToViewDimension(data.mHeight); 7917 int maxHeight = contentToViewDimension(data.mContentHeight); 7918 int viewHeight = getViewHeight(); 7919 int y = (int) (top + data.mYPercentInDoc * height - 7920 data.mYPercentInView * viewHeight); 7921 if (DebugFlags.WEB_VIEW) { 7922 Log.v(LOGTAG, "showRectMsg=(top=" + top + ",height=" + 7923 height + ",maxHeight=" + maxHeight + 7924 ",viewHeight=" + viewHeight + ",y=" 7925 + y + ",yPercentInDoc=" + data.mYPercentInDoc + 7926 ",yPercentInView=" + data.mYPercentInView+ ")"); 7927 } 7928 // use the passing content height to cap y as the current 7929 // mContentHeight may not be updated yet 7930 y = Math.max(0, 7931 (Math.min(maxHeight, y + viewHeight) - viewHeight)); 7932 // We need to take into account the visible title height 7933 // when scrolling since y is an absolute view position. 7934 y = Math.max(0, y - getVisibleTitleHeight()); 7935 scrollTo(x, y); 7936 } 7937 break; 7938 7939 case CENTER_FIT_RECT: 7940 centerFitRect((Rect)msg.obj); 7941 break; 7942 7943 case SET_SCROLLBAR_MODES: 7944 mHorizontalScrollBarMode = msg.arg1; 7945 mVerticalScrollBarMode = msg.arg2; 7946 break; 7947 7948 case SELECTION_STRING_CHANGED: 7949 if (mAccessibilityInjector != null) { 7950 String selectionString = (String) msg.obj; 7951 mAccessibilityInjector.onSelectionStringChange(selectionString); 7952 } 7953 break; 7954 7955 case SET_TOUCH_HIGHLIGHT_RECTS: 7956 invalidate(mTouchHighlightRegion.getBounds()); 7957 mTouchHighlightRegion.setEmpty(); 7958 if (msg.obj != null) { 7959 ArrayList<Rect> rects = (ArrayList<Rect>) msg.obj; 7960 for (Rect rect : rects) { 7961 Rect viewRect = contentToViewRect(rect); 7962 // some sites, like stories in nytimes.com, set 7963 // mouse event handler in the top div. It is not 7964 // user friendly to highlight the div if it covers 7965 // more than half of the screen. 7966 if (viewRect.width() < getWidth() >> 1 7967 || viewRect.height() < getHeight() >> 1) { 7968 mTouchHighlightRegion.union(viewRect); 7969 invalidate(viewRect); 7970 } else { 7971 Log.w(LOGTAG, "Skip the huge selection rect:" 7972 + viewRect); 7973 } 7974 } 7975 } 7976 break; 7977 7978 case SAVE_WEBARCHIVE_FINISHED: 7979 SaveWebArchiveMessage saveMessage = (SaveWebArchiveMessage)msg.obj; 7980 if (saveMessage.mCallback != null) { 7981 saveMessage.mCallback.onReceiveValue(saveMessage.mResultFile); 7982 } 7983 break; 7984 7985 case SET_AUTOFILLABLE: 7986 mAutoFillData = (WebViewCore.AutoFillData) msg.obj; 7987 if (mWebTextView != null) { 7988 mWebTextView.setAutoFillable(mAutoFillData.getQueryId()); 7989 rebuildWebTextView(); 7990 } 7991 break; 7992 7993 case AUTOFILL_COMPLETE: 7994 if (mWebTextView != null) { 7995 // Clear the WebTextView adapter when AutoFill finishes 7996 // so that the drop down gets cleared. 7997 mWebTextView.setAdapterCustom(null); 7998 } 7999 break; 8000 8001 case SELECT_AT: 8002 nativeSelectAt(msg.arg1, msg.arg2); 8003 break; 8004 8005 default: 8006 super.handleMessage(msg); 8007 break; 8008 } 8009 } 8010 } 8011 8012 /** 8013 * Used when receiving messages for REQUEST_KEYBOARD_WITH_SELECTION_MSG_ID 8014 * and UPDATE_TEXT_SELECTION_MSG_ID. Update the selection of WebTextView. 8015 */ 8016 private void updateTextSelectionFromMessage(int nodePointer, 8017 int textGeneration, WebViewCore.TextSelectionData data) { 8018 if (inEditingMode() 8019 && mWebTextView.isSameTextField(nodePointer) 8020 && textGeneration == mTextGeneration) { 8021 mWebTextView.setSelectionFromWebKit(data.mStart, data.mEnd); 8022 } 8023 } 8024 8025 // Class used to use a dropdown for a <select> element 8026 private class InvokeListBox implements Runnable { 8027 // Whether the listbox allows multiple selection. 8028 private boolean mMultiple; 8029 // Passed in to a list with multiple selection to tell 8030 // which items are selected. 8031 private int[] mSelectedArray; 8032 // Passed in to a list with single selection to tell 8033 // where the initial selection is. 8034 private int mSelection; 8035 8036 private Container[] mContainers; 8037 8038 // Need these to provide stable ids to my ArrayAdapter, 8039 // which normally does not have stable ids. (Bug 1250098) 8040 private class Container extends Object { 8041 /** 8042 * Possible values for mEnabled. Keep in sync with OptionStatus in 8043 * WebViewCore.cpp 8044 */ 8045 final static int OPTGROUP = -1; 8046 final static int OPTION_DISABLED = 0; 8047 final static int OPTION_ENABLED = 1; 8048 8049 String mString; 8050 int mEnabled; 8051 int mId; 8052 8053 @Override 8054 public String toString() { 8055 return mString; 8056 } 8057 } 8058 8059 /** 8060 * Subclass ArrayAdapter so we can disable OptionGroupLabels, 8061 * and allow filtering. 8062 */ 8063 private class MyArrayListAdapter extends ArrayAdapter<Container> { 8064 public MyArrayListAdapter() { 8065 super(mContext, 8066 mMultiple ? com.android.internal.R.layout.select_dialog_multichoice : 8067 com.android.internal.R.layout.webview_select_singlechoice, 8068 mContainers); 8069 } 8070 8071 @Override 8072 public View getView(int position, View convertView, 8073 ViewGroup parent) { 8074 // Always pass in null so that we will get a new CheckedTextView 8075 // Otherwise, an item which was previously used as an <optgroup> 8076 // element (i.e. has no check), could get used as an <option> 8077 // element, which needs a checkbox/radio, but it would not have 8078 // one. 8079 convertView = super.getView(position, null, parent); 8080 Container c = item(position); 8081 if (c != null && Container.OPTION_ENABLED != c.mEnabled) { 8082 // ListView does not draw dividers between disabled and 8083 // enabled elements. Use a LinearLayout to provide dividers 8084 LinearLayout layout = new LinearLayout(mContext); 8085 layout.setOrientation(LinearLayout.VERTICAL); 8086 if (position > 0) { 8087 View dividerTop = new View(mContext); 8088 dividerTop.setBackgroundResource( 8089 android.R.drawable.divider_horizontal_bright); 8090 layout.addView(dividerTop); 8091 } 8092 8093 if (Container.OPTGROUP == c.mEnabled) { 8094 // Currently select_dialog_multichoice uses CheckedTextViews. 8095 // If that changes, the class cast will no longer be valid. 8096 if (mMultiple) { 8097 Assert.assertTrue(convertView instanceof CheckedTextView); 8098 ((CheckedTextView) convertView).setCheckMarkDrawable(null); 8099 } 8100 } else { 8101 // c.mEnabled == Container.OPTION_DISABLED 8102 // Draw the disabled element in a disabled state. 8103 convertView.setEnabled(false); 8104 } 8105 8106 layout.addView(convertView); 8107 if (position < getCount() - 1) { 8108 View dividerBottom = new View(mContext); 8109 dividerBottom.setBackgroundResource( 8110 android.R.drawable.divider_horizontal_bright); 8111 layout.addView(dividerBottom); 8112 } 8113 return layout; 8114 } 8115 return convertView; 8116 } 8117 8118 @Override 8119 public boolean hasStableIds() { 8120 // AdapterView's onChanged method uses this to determine whether 8121 // to restore the old state. Return false so that the old (out 8122 // of date) state does not replace the new, valid state. 8123 return false; 8124 } 8125 8126 private Container item(int position) { 8127 if (position < 0 || position >= getCount()) { 8128 return null; 8129 } 8130 return (Container) getItem(position); 8131 } 8132 8133 @Override 8134 public long getItemId(int position) { 8135 Container item = item(position); 8136 if (item == null) { 8137 return -1; 8138 } 8139 return item.mId; 8140 } 8141 8142 @Override 8143 public boolean areAllItemsEnabled() { 8144 return false; 8145 } 8146 8147 @Override 8148 public boolean isEnabled(int position) { 8149 Container item = item(position); 8150 if (item == null) { 8151 return false; 8152 } 8153 return Container.OPTION_ENABLED == item.mEnabled; 8154 } 8155 } 8156 8157 private InvokeListBox(String[] array, int[] enabled, int[] selected) { 8158 mMultiple = true; 8159 mSelectedArray = selected; 8160 8161 int length = array.length; 8162 mContainers = new Container[length]; 8163 for (int i = 0; i < length; i++) { 8164 mContainers[i] = new Container(); 8165 mContainers[i].mString = array[i]; 8166 mContainers[i].mEnabled = enabled[i]; 8167 mContainers[i].mId = i; 8168 } 8169 } 8170 8171 private InvokeListBox(String[] array, int[] enabled, int selection) { 8172 mSelection = selection; 8173 mMultiple = false; 8174 8175 int length = array.length; 8176 mContainers = new Container[length]; 8177 for (int i = 0; i < length; i++) { 8178 mContainers[i] = new Container(); 8179 mContainers[i].mString = array[i]; 8180 mContainers[i].mEnabled = enabled[i]; 8181 mContainers[i].mId = i; 8182 } 8183 } 8184 8185 /* 8186 * Whenever the data set changes due to filtering, this class ensures 8187 * that the checked item remains checked. 8188 */ 8189 private class SingleDataSetObserver extends DataSetObserver { 8190 private long mCheckedId; 8191 private ListView mListView; 8192 private Adapter mAdapter; 8193 8194 /* 8195 * Create a new observer. 8196 * @param id The ID of the item to keep checked. 8197 * @param l ListView for getting and clearing the checked states 8198 * @param a Adapter for getting the IDs 8199 */ 8200 public SingleDataSetObserver(long id, ListView l, Adapter a) { 8201 mCheckedId = id; 8202 mListView = l; 8203 mAdapter = a; 8204 } 8205 8206 @Override 8207 public void onChanged() { 8208 // The filter may have changed which item is checked. Find the 8209 // item that the ListView thinks is checked. 8210 int position = mListView.getCheckedItemPosition(); 8211 long id = mAdapter.getItemId(position); 8212 if (mCheckedId != id) { 8213 // Clear the ListView's idea of the checked item, since 8214 // it is incorrect 8215 mListView.clearChoices(); 8216 // Search for mCheckedId. If it is in the filtered list, 8217 // mark it as checked 8218 int count = mAdapter.getCount(); 8219 for (int i = 0; i < count; i++) { 8220 if (mAdapter.getItemId(i) == mCheckedId) { 8221 mListView.setItemChecked(i, true); 8222 break; 8223 } 8224 } 8225 } 8226 } 8227 } 8228 8229 public void run() { 8230 final ListView listView = (ListView) LayoutInflater.from(mContext) 8231 .inflate(com.android.internal.R.layout.select_dialog, null); 8232 final MyArrayListAdapter adapter = new MyArrayListAdapter(); 8233 AlertDialog.Builder b = new AlertDialog.Builder(mContext) 8234 .setView(listView).setCancelable(true) 8235 .setInverseBackgroundForced(true); 8236 8237 if (mMultiple) { 8238 b.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() { 8239 public void onClick(DialogInterface dialog, int which) { 8240 mWebViewCore.sendMessage( 8241 EventHub.LISTBOX_CHOICES, 8242 adapter.getCount(), 0, 8243 listView.getCheckedItemPositions()); 8244 }}); 8245 b.setNegativeButton(android.R.string.cancel, 8246 new DialogInterface.OnClickListener() { 8247 public void onClick(DialogInterface dialog, int which) { 8248 mWebViewCore.sendMessage( 8249 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8250 }}); 8251 } 8252 mListBoxDialog = b.create(); 8253 listView.setAdapter(adapter); 8254 listView.setFocusableInTouchMode(true); 8255 // There is a bug (1250103) where the checks in a ListView with 8256 // multiple items selected are associated with the positions, not 8257 // the ids, so the items do not properly retain their checks when 8258 // filtered. Do not allow filtering on multiple lists until 8259 // that bug is fixed. 8260 8261 listView.setTextFilterEnabled(!mMultiple); 8262 if (mMultiple) { 8263 listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE); 8264 int length = mSelectedArray.length; 8265 for (int i = 0; i < length; i++) { 8266 listView.setItemChecked(mSelectedArray[i], true); 8267 } 8268 } else { 8269 listView.setOnItemClickListener(new OnItemClickListener() { 8270 public void onItemClick(AdapterView<?> parent, View v, 8271 int position, long id) { 8272 // Rather than sending the message right away, send it 8273 // after the page regains focus. 8274 mListBoxMessage = Message.obtain(null, 8275 EventHub.SINGLE_LISTBOX_CHOICE, (int) id, 0); 8276 mListBoxDialog.dismiss(); 8277 mListBoxDialog = null; 8278 } 8279 }); 8280 if (mSelection != -1) { 8281 listView.setSelection(mSelection); 8282 listView.setChoiceMode(ListView.CHOICE_MODE_SINGLE); 8283 listView.setItemChecked(mSelection, true); 8284 DataSetObserver observer = new SingleDataSetObserver( 8285 adapter.getItemId(mSelection), listView, adapter); 8286 adapter.registerDataSetObserver(observer); 8287 } 8288 } 8289 mListBoxDialog.setOnCancelListener(new DialogInterface.OnCancelListener() { 8290 public void onCancel(DialogInterface dialog) { 8291 mWebViewCore.sendMessage( 8292 EventHub.SINGLE_LISTBOX_CHOICE, -2, 0); 8293 mListBoxDialog = null; 8294 } 8295 }); 8296 mListBoxDialog.show(); 8297 } 8298 } 8299 8300 private Message mListBoxMessage; 8301 8302 /* 8303 * Request a dropdown menu for a listbox with multiple selection. 8304 * 8305 * @param array Labels for the listbox. 8306 * @param enabledArray State for each element in the list. See static 8307 * integers in Container class. 8308 * @param selectedArray Which positions are initally selected. 8309 */ 8310 void requestListBox(String[] array, int[] enabledArray, int[] 8311 selectedArray) { 8312 mPrivateHandler.post( 8313 new InvokeListBox(array, enabledArray, selectedArray)); 8314 } 8315 8316 /* 8317 * Request a dropdown menu for a listbox with single selection or a single 8318 * <select> element. 8319 * 8320 * @param array Labels for the listbox. 8321 * @param enabledArray State for each element in the list. See static 8322 * integers in Container class. 8323 * @param selection Which position is initally selected. 8324 */ 8325 void requestListBox(String[] array, int[] enabledArray, int selection) { 8326 mPrivateHandler.post( 8327 new InvokeListBox(array, enabledArray, selection)); 8328 } 8329 8330 // called by JNI 8331 private void sendMoveFocus(int frame, int node) { 8332 mWebViewCore.sendMessage(EventHub.SET_MOVE_FOCUS, 8333 new WebViewCore.CursorData(frame, node, 0, 0)); 8334 } 8335 8336 // called by JNI 8337 private void sendMoveMouse(int frame, int node, int x, int y) { 8338 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE, 8339 new WebViewCore.CursorData(frame, node, x, y)); 8340 } 8341 8342 /* 8343 * Send a mouse move event to the webcore thread. 8344 * 8345 * @param removeFocus Pass true to remove the WebTextView, if present. 8346 * @param stopPaintingCaret Stop drawing the blinking caret if true. 8347 * called by JNI 8348 */ 8349 @SuppressWarnings("unused") 8350 private void sendMoveMouseIfLatest(boolean removeFocus, boolean stopPaintingCaret) { 8351 if (removeFocus) { 8352 clearTextEntry(); 8353 } 8354 mWebViewCore.sendMessage(EventHub.SET_MOVE_MOUSE_IF_LATEST, 8355 stopPaintingCaret ? 1 : 0, 0, 8356 cursorData()); 8357 } 8358 8359 /** 8360 * Called by JNI to send a message to the webcore thread that the user 8361 * touched the webpage. 8362 * @param touchGeneration Generation number of the touch, to ignore touches 8363 * after a new one has been generated. 8364 * @param frame Pointer to the frame holding the node that was touched. 8365 * @param node Pointer to the node touched. 8366 * @param x x-position of the touch. 8367 * @param y y-position of the touch. 8368 */ 8369 private void sendMotionUp(int touchGeneration, 8370 int frame, int node, int x, int y) { 8371 WebViewCore.TouchUpData touchUpData = new WebViewCore.TouchUpData(); 8372 touchUpData.mMoveGeneration = touchGeneration; 8373 touchUpData.mFrame = frame; 8374 touchUpData.mNode = node; 8375 touchUpData.mX = x; 8376 touchUpData.mY = y; 8377 touchUpData.mNativeLayer = nativeScrollableLayer( 8378 x, y, touchUpData.mNativeLayerRect, null); 8379 mWebViewCore.sendMessage(EventHub.TOUCH_UP, touchUpData); 8380 } 8381 8382 8383 private int getScaledMaxXScroll() { 8384 int width; 8385 if (mHeightCanMeasure == false) { 8386 width = getViewWidth() / 4; 8387 } else { 8388 Rect visRect = new Rect(); 8389 calcOurVisibleRect(visRect); 8390 width = visRect.width() / 2; 8391 } 8392 // FIXME the divisor should be retrieved from somewhere 8393 return viewToContentX(width); 8394 } 8395 8396 private int getScaledMaxYScroll() { 8397 int height; 8398 if (mHeightCanMeasure == false) { 8399 height = getViewHeight() / 4; 8400 } else { 8401 Rect visRect = new Rect(); 8402 calcOurVisibleRect(visRect); 8403 height = visRect.height() / 2; 8404 } 8405 // FIXME the divisor should be retrieved from somewhere 8406 // the closest thing today is hard-coded into ScrollView.java 8407 // (from ScrollView.java, line 363) int maxJump = height/2; 8408 return Math.round(height * mZoomManager.getInvScale()); 8409 } 8410 8411 /** 8412 * Called by JNI to invalidate view 8413 */ 8414 private void viewInvalidate() { 8415 invalidate(); 8416 } 8417 8418 /** 8419 * Pass the key directly to the page. This assumes that 8420 * nativePageShouldHandleShiftAndArrows() returned true. 8421 */ 8422 private void letPageHandleNavKey(int keyCode, long time, boolean down, int metaState) { 8423 int keyEventAction; 8424 int eventHubAction; 8425 if (down) { 8426 keyEventAction = KeyEvent.ACTION_DOWN; 8427 eventHubAction = EventHub.KEY_DOWN; 8428 playSoundEffect(keyCodeToSoundsEffect(keyCode)); 8429 } else { 8430 keyEventAction = KeyEvent.ACTION_UP; 8431 eventHubAction = EventHub.KEY_UP; 8432 } 8433 8434 KeyEvent event = new KeyEvent(time, time, keyEventAction, keyCode, 8435 1, (metaState & KeyEvent.META_SHIFT_ON) 8436 | (metaState & KeyEvent.META_ALT_ON) 8437 | (metaState & KeyEvent.META_SYM_ON) 8438 , KeyCharacterMap.VIRTUAL_KEYBOARD, 0, 0); 8439 mWebViewCore.sendMessage(eventHubAction, event); 8440 } 8441 8442 // return true if the key was handled 8443 private boolean navHandledKey(int keyCode, int count, boolean noScroll, 8444 long time) { 8445 if (mNativeClass == 0) { 8446 return false; 8447 } 8448 mInitialHitTestResult = null; 8449 mLastCursorTime = time; 8450 mLastCursorBounds = nativeGetCursorRingBounds(); 8451 boolean keyHandled 8452 = nativeMoveCursor(keyCode, count, noScroll) == false; 8453 if (DebugFlags.WEB_VIEW) { 8454 Log.v(LOGTAG, "navHandledKey mLastCursorBounds=" + mLastCursorBounds 8455 + " mLastCursorTime=" + mLastCursorTime 8456 + " handled=" + keyHandled); 8457 } 8458 if (keyHandled == false) { 8459 return keyHandled; 8460 } 8461 Rect contentCursorRingBounds = nativeGetCursorRingBounds(); 8462 if (contentCursorRingBounds.isEmpty()) return keyHandled; 8463 Rect viewCursorRingBounds = contentToViewRect(contentCursorRingBounds); 8464 // set last touch so that context menu related functions will work 8465 mLastTouchX = (viewCursorRingBounds.left + viewCursorRingBounds.right) / 2; 8466 mLastTouchY = (viewCursorRingBounds.top + viewCursorRingBounds.bottom) / 2; 8467 if (mHeightCanMeasure == false) { 8468 return keyHandled; 8469 } 8470 Rect visRect = new Rect(); 8471 calcOurVisibleRect(visRect); 8472 Rect outset = new Rect(visRect); 8473 int maxXScroll = visRect.width() / 2; 8474 int maxYScroll = visRect.height() / 2; 8475 outset.inset(-maxXScroll, -maxYScroll); 8476 if (Rect.intersects(outset, viewCursorRingBounds) == false) { 8477 return keyHandled; 8478 } 8479 // FIXME: Necessary because ScrollView/ListView do not scroll left/right 8480 int maxH = Math.min(viewCursorRingBounds.right - visRect.right, 8481 maxXScroll); 8482 if (maxH > 0) { 8483 pinScrollBy(maxH, 0, true, 0); 8484 } else { 8485 maxH = Math.max(viewCursorRingBounds.left - visRect.left, 8486 -maxXScroll); 8487 if (maxH < 0) { 8488 pinScrollBy(maxH, 0, true, 0); 8489 } 8490 } 8491 if (mLastCursorBounds.isEmpty()) return keyHandled; 8492 if (mLastCursorBounds.equals(contentCursorRingBounds)) { 8493 return keyHandled; 8494 } 8495 if (DebugFlags.WEB_VIEW) { 8496 Log.v(LOGTAG, "navHandledKey contentCursorRingBounds=" 8497 + contentCursorRingBounds); 8498 } 8499 requestRectangleOnScreen(viewCursorRingBounds); 8500 return keyHandled; 8501 } 8502 8503 /** 8504 * @return Whether accessibility script has been injected. 8505 */ 8506 private boolean accessibilityScriptInjected() { 8507 // TODO: Maybe the injected script should announce its presence in 8508 // the page meta-tag so the nativePageShouldHandleShiftAndArrows 8509 // will check that as one of the conditions it looks for 8510 return mAccessibilityScriptInjected; 8511 } 8512 8513 /** 8514 * Set the background color. It's white by default. Pass 8515 * zero to make the view transparent. 8516 * @param color the ARGB color described by Color.java 8517 */ 8518 @Override 8519 public void setBackgroundColor(int color) { 8520 mBackgroundColor = color; 8521 mWebViewCore.sendMessage(EventHub.SET_BACKGROUND_COLOR, color); 8522 } 8523 8524 /** 8525 * @deprecated This method is now obsolete. 8526 */ 8527 @Deprecated 8528 public void debugDump() { 8529 nativeDebugDump(); 8530 mWebViewCore.sendMessage(EventHub.DUMP_NAVTREE); 8531 } 8532 8533 /** 8534 * Draw the HTML page into the specified canvas. This call ignores any 8535 * view-specific zoom, scroll offset, or other changes. It does not draw 8536 * any view-specific chrome, such as progress or URL bars. 8537 * 8538 * @hide only needs to be accessible to Browser and testing 8539 */ 8540 public void drawPage(Canvas canvas) { 8541 nativeDraw(canvas, 0, 0, false); 8542 } 8543 8544 /** 8545 * Enable the communication b/t the webView and VideoViewProxy 8546 * 8547 * @hide only used by the Browser 8548 */ 8549 public void setHTML5VideoViewProxy(HTML5VideoViewProxy proxy) { 8550 mHTML5VideoViewProxy = proxy; 8551 } 8552 8553 /** 8554 * Enable expanded tiles bound for smoother scrolling. 8555 * 8556 * @hide only used by the Browser 8557 */ 8558 public void setExpandedTileBounds(boolean enabled) { 8559 nativeSetExpandedTileBounds(enabled); 8560 } 8561 8562 /** 8563 * Set the time to wait between passing touches to WebCore. See also the 8564 * TOUCH_SENT_INTERVAL member for further discussion. 8565 * 8566 * @hide This is only used by the DRT test application. 8567 */ 8568 public void setTouchInterval(int interval) { 8569 mCurrentTouchInterval = interval; 8570 } 8571 8572 /** 8573 * Update our cache with updatedText. 8574 * @param updatedText The new text to put in our cache. 8575 */ 8576 /* package */ void updateCachedTextfield(String updatedText) { 8577 // Also place our generation number so that when we look at the cache 8578 // we recognize that it is up to date. 8579 nativeUpdateCachedTextfield(updatedText, mTextGeneration); 8580 } 8581 8582 /*package*/ void autoFillForm(int autoFillQueryId) { 8583 mWebViewCore.sendMessage(EventHub.AUTOFILL_FORM, autoFillQueryId, /* unused */0); 8584 } 8585 8586 /* package */ ViewManager getViewManager() { 8587 return mViewManager; 8588 } 8589 8590 private native int nativeCacheHitFramePointer(); 8591 private native boolean nativeCacheHitIsPlugin(); 8592 private native Rect nativeCacheHitNodeBounds(); 8593 private native int nativeCacheHitNodePointer(); 8594 /* package */ native void nativeClearCursor(); 8595 private native void nativeCreate(int ptr); 8596 private native int nativeCursorFramePointer(); 8597 private native Rect nativeCursorNodeBounds(); 8598 private native int nativeCursorNodePointer(); 8599 private native boolean nativeCursorIntersects(Rect visibleRect); 8600 private native boolean nativeCursorIsAnchor(); 8601 private native boolean nativeCursorIsTextInput(); 8602 private native Point nativeCursorPosition(); 8603 private native String nativeCursorText(); 8604 /** 8605 * Returns true if the native cursor node says it wants to handle key events 8606 * (ala plugins). This can only be called if mNativeClass is non-zero! 8607 */ 8608 private native boolean nativeCursorWantsKeyEvents(); 8609 private native void nativeDebugDump(); 8610 private native void nativeDestroy(); 8611 8612 /** 8613 * Draw the picture set with a background color and extra. If 8614 * "splitIfNeeded" is true and the return value is not 0, the return value 8615 * MUST be passed to WebViewCore with SPLIT_PICTURE_SET message so that the 8616 * native allocation can be freed. 8617 */ 8618 private native int nativeDraw(Canvas canvas, int color, int extra, 8619 boolean splitIfNeeded); 8620 private native void nativeDumpDisplayTree(String urlOrNull); 8621 private native boolean nativeEvaluateLayersAnimations(); 8622 private native int nativeGetDrawGLFunction(Rect rect, Rect viewRect, 8623 float scale, int extras); 8624 private native void nativeUpdateDrawGLFunction(Rect rect, Rect viewRect); 8625 private native boolean nativeDrawGL(Rect rect, float scale, int extras); 8626 private native void nativeExtendSelection(int x, int y); 8627 private native int nativeFindAll(String findLower, String findUpper, 8628 boolean sameAsLastSearch); 8629 private native void nativeFindNext(boolean forward); 8630 /* package */ native int nativeFocusCandidateFramePointer(); 8631 /* package */ native boolean nativeFocusCandidateHasNextTextfield(); 8632 /* package */ native boolean nativeFocusCandidateIsPassword(); 8633 private native boolean nativeFocusCandidateIsRtlText(); 8634 private native boolean nativeFocusCandidateIsTextInput(); 8635 /* package */ native int nativeFocusCandidateMaxLength(); 8636 /* package */ native boolean nativeFocusCandidateIsAutoComplete(); 8637 /* package */ native String nativeFocusCandidateName(); 8638 private native Rect nativeFocusCandidateNodeBounds(); 8639 /** 8640 * @return A Rect with left, top, right, bottom set to the corresponding 8641 * padding values in the focus candidate, if it is a textfield/textarea with 8642 * a style. Otherwise return null. This is not actually a rectangle; Rect 8643 * is being used to pass four integers. 8644 */ 8645 private native Rect nativeFocusCandidatePaddingRect(); 8646 /* package */ native int nativeFocusCandidatePointer(); 8647 private native String nativeFocusCandidateText(); 8648 /* package */ native float nativeFocusCandidateTextSize(); 8649 /* package */ native int nativeFocusCandidateLineHeight(); 8650 /** 8651 * Returns an integer corresponding to WebView.cpp::type. 8652 * See WebTextView.setType() 8653 */ 8654 private native int nativeFocusCandidateType(); 8655 private native boolean nativeFocusIsPlugin(); 8656 private native Rect nativeFocusNodeBounds(); 8657 /* package */ native int nativeFocusNodePointer(); 8658 private native Rect nativeGetCursorRingBounds(); 8659 private native String nativeGetSelection(); 8660 private native boolean nativeHasCursorNode(); 8661 private native boolean nativeHasFocusNode(); 8662 private native void nativeHideCursor(); 8663 private native boolean nativeHitSelection(int x, int y); 8664 private native String nativeImageURI(int x, int y); 8665 private native void nativeInstrumentReport(); 8666 private native Rect nativeLayerBounds(int layer); 8667 /* package */ native boolean nativeMoveCursorToNextTextInput(); 8668 // return true if the page has been scrolled 8669 private native boolean nativeMotionUp(int x, int y, int slop); 8670 // returns false if it handled the key 8671 private native boolean nativeMoveCursor(int keyCode, int count, 8672 boolean noScroll); 8673 private native int nativeMoveGeneration(); 8674 private native void nativeMoveSelection(int x, int y); 8675 /** 8676 * @return true if the page should get the shift and arrow keys, rather 8677 * than select text/navigation. 8678 * 8679 * If the focus is a plugin, or if the focus and cursor match and are 8680 * a contentEditable element, then the page should handle these keys. 8681 */ 8682 private native boolean nativePageShouldHandleShiftAndArrows(); 8683 private native boolean nativePointInNavCache(int x, int y, int slop); 8684 // Like many other of our native methods, you must make sure that 8685 // mNativeClass is not null before calling this method. 8686 private native void nativeRecordButtons(boolean focused, 8687 boolean pressed, boolean invalidate); 8688 private native void nativeResetSelection(); 8689 private native Point nativeSelectableText(); 8690 private native void nativeSelectAll(); 8691 private native void nativeSelectBestAt(Rect rect); 8692 private native void nativeSelectAt(int x, int y); 8693 private native int nativeSelectionX(); 8694 private native int nativeSelectionY(); 8695 private native int nativeFindIndex(); 8696 private native void nativeSetExtendSelection(); 8697 private native void nativeSetFindIsEmpty(); 8698 private native void nativeSetFindIsUp(boolean isUp); 8699 private native void nativeSetHeightCanMeasure(boolean measure); 8700 private native void nativeSetBaseLayer(int layer, Region invalRegion, 8701 boolean showVisualIndicator, boolean isPictureAfterFirstLayout); 8702 private native void nativeShowCursorTimed(); 8703 private native void nativeReplaceBaseContent(int content); 8704 private native void nativeCopyBaseContentToPicture(Picture pict); 8705 private native boolean nativeHasContent(); 8706 private native void nativeSetSelectionPointer(boolean set, 8707 float scale, int x, int y); 8708 private native boolean nativeStartSelection(int x, int y); 8709 private native void nativeStopGL(); 8710 private native Rect nativeSubtractLayers(Rect content); 8711 private native int nativeTextGeneration(); 8712 // Never call this version except by updateCachedTextfield(String) - 8713 // we always want to pass in our generation number. 8714 private native void nativeUpdateCachedTextfield(String updatedText, 8715 int generation); 8716 private native boolean nativeWordSelection(int x, int y); 8717 // return NO_LEFTEDGE means failure. 8718 static final int NO_LEFTEDGE = -1; 8719 native int nativeGetBlockLeftEdge(int x, int y, float scale); 8720 8721 private native void nativeSetExpandedTileBounds(boolean enabled); 8722 8723 // Returns a pointer to the scrollable LayerAndroid at the given point. 8724 private native int nativeScrollableLayer(int x, int y, Rect scrollRect, 8725 Rect scrollBounds); 8726 /** 8727 * Scroll the specified layer. 8728 * @param layer Id of the layer to scroll, as determined by nativeScrollableLayer. 8729 * @param newX Destination x position to which to scroll. 8730 * @param newY Destination y position to which to scroll. 8731 * @return True if the layer is successfully scrolled. 8732 */ 8733 private native boolean nativeScrollLayer(int layer, int newX, int newY); 8734} 8735