WebView.java revision e623e2448436d5496d5a28b7cec1b746ed0dc5e2
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.content.Context; 21import android.content.res.Configuration; 22import android.graphics.Bitmap; 23import android.graphics.Canvas; 24import android.graphics.Paint; 25import android.graphics.Picture; 26import android.graphics.Rect; 27import android.graphics.drawable.Drawable; 28import android.net.http.SslCertificate; 29import android.os.Bundle; 30import android.os.Looper; 31import android.os.Message; 32import android.os.StrictMode; 33import android.util.AttributeSet; 34import android.util.Log; 35import android.view.KeyEvent; 36import android.view.MotionEvent; 37import android.view.View; 38import android.view.ViewDebug; 39import android.view.ViewGroup; 40import android.view.ViewTreeObserver; 41import android.view.accessibility.AccessibilityEvent; 42import android.view.accessibility.AccessibilityNodeInfo; 43import android.view.inputmethod.EditorInfo; 44import android.view.inputmethod.InputConnection; 45import android.widget.AbsoluteLayout; 46 47import java.io.BufferedWriter; 48import java.io.File; 49import java.util.Map; 50 51/** 52 * <p>A View that displays web pages. This class is the basis upon which you 53 * can roll your own web browser or simply display some online content within your Activity. 54 * It uses the WebKit rendering engine to display 55 * web pages and includes methods to navigate forward and backward 56 * through a history, zoom in and out, perform text searches and more.</p> 57 * <p>To enable the built-in zoom, set 58 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 59 * (introduced in API level {@link android.os.Build.VERSION_CODES#CUPCAKE}). 60 * <p>Note that, in order for your Activity to access the Internet and load web pages 61 * in a WebView, you must add the {@code INTERNET} permissions to your 62 * Android Manifest file:</p> 63 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 64 * 65 * <p>This must be a child of the <a 66 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 67 * element.</p> 68 * 69 * <p>For more information, read 70 * <a href="{@docRoot}guide/webapps/webview.html">Building Web Apps in WebView</a>.</p> 71 * 72 * <h3>Basic usage</h3> 73 * 74 * <p>By default, a WebView provides no browser-like widgets, does not 75 * enable JavaScript and web page errors are ignored. If your goal is only 76 * to display some HTML as a part of your UI, this is probably fine; 77 * the user won't need to interact with the web page beyond reading 78 * it, and the web page won't need to interact with the user. If you 79 * actually want a full-blown web browser, then you probably want to 80 * invoke the Browser application with a URL Intent rather than show it 81 * with a WebView. For example: 82 * <pre> 83 * Uri uri = Uri.parse("http://www.example.com"); 84 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 85 * startActivity(intent); 86 * </pre> 87 * <p>See {@link android.content.Intent} for more information.</p> 88 * 89 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 90 * or set the entire Activity window as a WebView during {@link 91 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 92 * <pre class="prettyprint"> 93 * WebView webview = new WebView(this); 94 * setContentView(webview); 95 * </pre> 96 * 97 * <p>Then load the desired web page:</p> 98 * <pre> 99 * // Simplest usage: note that an exception will NOT be thrown 100 * // if there is an error loading this page (see below). 101 * webview.loadUrl("http://slashdot.org/"); 102 * 103 * // OR, you can also load from an HTML string: 104 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 105 * webview.loadData(summary, "text/html", null); 106 * // ... although note that there are restrictions on what this HTML can do. 107 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 108 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 109 * </pre> 110 * 111 * <p>A WebView has several customization points where you can add your 112 * own behavior. These are:</p> 113 * 114 * <ul> 115 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 116 * This class is called when something that might impact a 117 * browser UI happens, for instance, progress updates and 118 * JavaScript alerts are sent here (see <a 119 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 120 * </li> 121 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 122 * It will be called when things happen that impact the 123 * rendering of the content, eg, errors or form submissions. You 124 * can also intercept URL loading here (via {@link 125 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 126 * shouldOverrideUrlLoading()}).</li> 127 * <li>Modifying the {@link android.webkit.WebSettings}, such as 128 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 129 * setJavaScriptEnabled()}. </li> 130 * <li>Injecting Java objects into the WebView using the 131 * {@link android.webkit.WebView#addJavascriptInterface} method. This 132 * method allows you to inject Java objects into a page's JavaScript 133 * context, so that they can be accessed by JavaScript in the page.</li> 134 * </ul> 135 * 136 * <p>Here's a more complicated example, showing error handling, 137 * settings, and progress notification:</p> 138 * 139 * <pre class="prettyprint"> 140 * // Let's display the progress in the activity title bar, like the 141 * // browser app does. 142 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 143 * 144 * webview.getSettings().setJavaScriptEnabled(true); 145 * 146 * final Activity activity = this; 147 * webview.setWebChromeClient(new WebChromeClient() { 148 * public void onProgressChanged(WebView view, int progress) { 149 * // Activities and WebViews measure progress with different scales. 150 * // The progress meter will automatically disappear when we reach 100% 151 * activity.setProgress(progress * 1000); 152 * } 153 * }); 154 * webview.setWebViewClient(new WebViewClient() { 155 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 156 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 157 * } 158 * }); 159 * 160 * webview.loadUrl("http://slashdot.org/"); 161 * </pre> 162 * 163 * <h3>Cookie and window management</h3> 164 * 165 * <p>For obvious security reasons, your application has its own 166 * cache, cookie store etc.—it does not share the Browser 167 * application's data. 168 * </p> 169 * 170 * <p>By default, requests by the HTML to open new windows are 171 * ignored. This is true whether they be opened by JavaScript or by 172 * the target attribute on a link. You can customize your 173 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 174 * and render them in whatever manner you want.</p> 175 * 176 * <p>The standard behavior for an Activity is to be destroyed and 177 * recreated when the device orientation or any other configuration changes. This will cause 178 * the WebView to reload the current page. If you don't want that, you 179 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 180 * changes, and then just leave the WebView alone. It'll automatically 181 * re-orient itself as appropriate. Read <a 182 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 183 * more information about how to handle configuration changes during runtime.</p> 184 * 185 * 186 * <h3>Building web pages to support different screen densities</h3> 187 * 188 * <p>The screen density of a device is based on the screen resolution. A screen with low density 189 * has fewer available pixels per inch, where a screen with high density 190 * has more — sometimes significantly more — pixels per inch. The density of a 191 * screen is important because, other things being equal, a UI element (such as a button) whose 192 * height and width are defined in terms of screen pixels will appear larger on the lower density 193 * screen and smaller on the higher density screen. 194 * For simplicity, Android collapses all actual screen densities into three generalized densities: 195 * high, medium, and low.</p> 196 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 197 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 198 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 199 * are bigger). 200 * Starting with API level {@link android.os.Build.VERSION_CODES#ECLAIR}, WebView supports DOM, CSS, 201 * and meta tag features to help you (as a web developer) target screens with different screen 202 * densities.</p> 203 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 204 * <ul> 205 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 206 * default scaling factor used for the current device. For example, if the value of {@code 207 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 208 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 209 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 210 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 211 * scaled 0.75x. However, if you specify the {@code "target-densitydpi"} meta property 212 * (discussed below), then you can stop this default scaling behavior.</li> 213 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 214 * densities for which this style sheet is to be used. The corresponding value should be either 215 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 216 * density, or high density screens, respectively. For example: 217 * <pre> 218 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 219 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 220 * which is the high density pixel ratio.</p> 221 * </li> 222 * <li>The {@code target-densitydpi} property for the {@code viewport} meta tag. You can use 223 * this to specify the target density for which the web page is designed, using the following 224 * values: 225 * <ul> 226 * <li>{@code device-dpi} - Use the device's native dpi as the target dpi. Default scaling never 227 * occurs.</li> 228 * <li>{@code high-dpi} - Use hdpi as the target dpi. Medium and low density screens scale down 229 * as appropriate.</li> 230 * <li>{@code medium-dpi} - Use mdpi as the target dpi. High density screens scale up and 231 * low density screens scale down. This is also the default behavior.</li> 232 * <li>{@code low-dpi} - Use ldpi as the target dpi. Medium and high density screens scale up 233 * as appropriate.</li> 234 * <li><em>{@code <value>}</em> - Specify a dpi value to use as the target dpi (accepted 235 * values are 70-400).</li> 236 * </ul> 237 * <p>Here's an example meta tag to specify the target density:</p> 238 * <pre><meta name="viewport" content="target-densitydpi=device-dpi" /></pre></li> 239 * </ul> 240 * <p>If you want to modify your web page for different densities, by using the {@code 241 * -webkit-device-pixel-ratio} CSS media query and/or the {@code 242 * window.devicePixelRatio} DOM property, then you should set the {@code target-densitydpi} meta 243 * property to {@code device-dpi}. This stops Android from performing scaling in your web page and 244 * allows you to make the necessary adjustments for each density via CSS and JavaScript.</p> 245 * 246 * <h3>HTML5 Video support</h3> 247 * 248 * <p>In order to support inline HTML5 video in your application, you need to have hardware 249 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 250 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 251 * and {@link WebChromeClient#onHideCustomView()} are required, 252 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 253 * </p> 254 */ 255// Implementation notes. 256// The WebView is a thin API class that delegates its public API to a backend WebViewProvider 257// class instance. WebView extends {@link AbsoluteLayout} for backward compatibility reasons. 258// Methods are delegated to the provider implementation: all public API methods introduced in this 259// file are fully delegated, whereas public and protected methods from the View base classes are 260// only delegated where a specific need exists for them to do so. 261@Widget 262public class WebView extends AbsoluteLayout 263 implements ViewTreeObserver.OnGlobalFocusChangeListener, 264 ViewGroup.OnHierarchyChangeListener, ViewDebug.HierarchyHandler { 265 266 private static final String LOGTAG = "webview_proxy"; 267 268 /** 269 * Transportation object for returning WebView across thread boundaries. 270 */ 271 public class WebViewTransport { 272 private WebView mWebview; 273 274 /** 275 * Sets the WebView to the transportation object. 276 * 277 * @param webview the WebView to transport 278 */ 279 public synchronized void setWebView(WebView webview) { 280 mWebview = webview; 281 } 282 283 /** 284 * Gets the WebView object. 285 * 286 * @return the transported WebView object 287 */ 288 public synchronized WebView getWebView() { 289 return mWebview; 290 } 291 } 292 293 /** 294 * URI scheme for telephone number. 295 */ 296 public static final String SCHEME_TEL = "tel:"; 297 /** 298 * URI scheme for email address. 299 */ 300 public static final String SCHEME_MAILTO = "mailto:"; 301 /** 302 * URI scheme for map address. 303 */ 304 public static final String SCHEME_GEO = "geo:0,0?q="; 305 306 /** 307 * Interface to listen for find results. 308 */ 309 public interface FindListener { 310 /** 311 * Notifies the listener about progress made by a find operation. 312 * 313 * @param activeMatchOrdinal the zero-based ordinal of the currently selected match 314 * @param numberOfMatches how many matches have been found 315 * @param isDoneCounting whether the find operation has actually completed. The listener 316 * may be notified multiple times while the 317 * operation is underway, and the numberOfMatches 318 * value should not be considered final unless 319 * isDoneCounting is true. 320 */ 321 public void onFindResultReceived(int activeMatchOrdinal, int numberOfMatches, 322 boolean isDoneCounting); 323 } 324 325 /** 326 * Interface to listen for new pictures as they change. 327 * 328 * @deprecated This interface is now obsolete. 329 */ 330 @Deprecated 331 public interface PictureListener { 332 /** 333 * Used to provide notification that the WebView's picture has changed. 334 * See {@link WebView#capturePicture} for details of the picture. 335 * 336 * @param view the WebView that owns the picture 337 * @param picture the new picture 338 * @deprecated Deprecated due to internal changes. 339 */ 340 @Deprecated 341 public void onNewPicture(WebView view, Picture picture); 342 } 343 344 public static class HitTestResult { 345 /** 346 * Default HitTestResult, where the target is unknown. 347 */ 348 public static final int UNKNOWN_TYPE = 0; 349 /** 350 * @deprecated This type is no longer used. 351 */ 352 @Deprecated 353 public static final int ANCHOR_TYPE = 1; 354 /** 355 * HitTestResult for hitting a phone number. 356 */ 357 public static final int PHONE_TYPE = 2; 358 /** 359 * HitTestResult for hitting a map address. 360 */ 361 public static final int GEO_TYPE = 3; 362 /** 363 * HitTestResult for hitting an email address. 364 */ 365 public static final int EMAIL_TYPE = 4; 366 /** 367 * HitTestResult for hitting an HTML::img tag. 368 */ 369 public static final int IMAGE_TYPE = 5; 370 /** 371 * @deprecated This type is no longer used. 372 */ 373 @Deprecated 374 public static final int IMAGE_ANCHOR_TYPE = 6; 375 /** 376 * HitTestResult for hitting a HTML::a tag with src=http. 377 */ 378 public static final int SRC_ANCHOR_TYPE = 7; 379 /** 380 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img. 381 */ 382 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 383 /** 384 * HitTestResult for hitting an edit text area. 385 */ 386 public static final int EDIT_TEXT_TYPE = 9; 387 388 private int mType; 389 private String mExtra; 390 391 /** 392 * @hide Only for use by WebViewProvider implementations 393 */ 394 public HitTestResult() { 395 mType = UNKNOWN_TYPE; 396 } 397 398 /** 399 * @hide Only for use by WebViewProvider implementations 400 */ 401 public void setType(int type) { 402 mType = type; 403 } 404 405 /** 406 * @hide Only for use by WebViewProvider implementations 407 */ 408 public void setExtra(String extra) { 409 mExtra = extra; 410 } 411 412 /** 413 * Gets the type of the hit test result. See the XXX_TYPE constants 414 * defined in this class. 415 * 416 * @return the type of the hit test result 417 */ 418 public int getType() { 419 return mType; 420 } 421 422 /** 423 * Gets additional type-dependant information about the result. See 424 * {@link WebView#getHitTestResult()} for details. May either be null 425 * or contain extra information about this result. 426 * 427 * @return additional type-dependant information about the result 428 */ 429 public String getExtra() { 430 return mExtra; 431 } 432 } 433 434 /** 435 * Constructs a new WebView with a Context object. 436 * 437 * @param context a Context object used to access application assets 438 */ 439 public WebView(Context context) { 440 this(context, null); 441 } 442 443 /** 444 * Constructs a new WebView with layout parameters. 445 * 446 * @param context a Context object used to access application assets 447 * @param attrs an AttributeSet passed to our parent 448 */ 449 public WebView(Context context, AttributeSet attrs) { 450 this(context, attrs, com.android.internal.R.attr.webViewStyle); 451 } 452 453 /** 454 * Constructs a new WebView with layout parameters and a default style. 455 * 456 * @param context a Context object used to access application assets 457 * @param attrs an AttributeSet passed to our parent 458 * @param defStyle the default style resource ID 459 */ 460 public WebView(Context context, AttributeSet attrs, int defStyle) { 461 this(context, attrs, defStyle, false); 462 } 463 464 /** 465 * Constructs a new WebView with layout parameters and a default style. 466 * 467 * @param context a Context object used to access application assets 468 * @param attrs an AttributeSet passed to our parent 469 * @param defStyle the default style resource ID 470 * @param privateBrowsing whether this WebView will be initialized in 471 * private mode 472 */ 473 public WebView(Context context, AttributeSet attrs, int defStyle, 474 boolean privateBrowsing) { 475 this(context, attrs, defStyle, null, privateBrowsing); 476 } 477 478 /** 479 * Constructs a new WebView with layout parameters, a default style and a set 480 * of custom Javscript interfaces to be added to this WebView at initialization 481 * time. This guarantees that these interfaces will be available when the JS 482 * context is initialized. 483 * 484 * @param context a Context object used to access application assets 485 * @param attrs an AttributeSet passed to our parent 486 * @param defStyle the default style resource ID 487 * @param javaScriptInterfaces a Map of interface names, as keys, and 488 * object implementing those interfaces, as 489 * values 490 * @param privateBrowsing whether this WebView will be initialized in 491 * private mode 492 * @hide This is used internally by dumprendertree, as it requires the javaScript interfaces to 493 * be added synchronously, before a subsequent loadUrl call takes effect. 494 */ 495 @SuppressWarnings("deprecation") // for super() call into deprecated base class constructor. 496 protected WebView(Context context, AttributeSet attrs, int defStyle, 497 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 498 super(context, attrs, defStyle); 499 if (context == null) { 500 throw new IllegalArgumentException("Invalid context argument"); 501 } 502 checkThread(); 503 504 ensureProviderCreated(); 505 mProvider.init(javaScriptInterfaces, privateBrowsing); 506 } 507 508 /** 509 * Specifies whether the horizontal scrollbar has overlay style. 510 * 511 * @param overlay true if horizontal scrollbar should have overlay style 512 */ 513 public void setHorizontalScrollbarOverlay(boolean overlay) { 514 checkThread(); 515 mProvider.setHorizontalScrollbarOverlay(overlay); 516 } 517 518 /** 519 * Specifies whether the vertical scrollbar has overlay style. 520 * 521 * @param overlay true if vertical scrollbar should have overlay style 522 */ 523 public void setVerticalScrollbarOverlay(boolean overlay) { 524 checkThread(); 525 mProvider.setVerticalScrollbarOverlay(overlay); 526 } 527 528 /** 529 * Gets whether horizontal scrollbar has overlay style. 530 * 531 * @return true if horizontal scrollbar has overlay style 532 */ 533 public boolean overlayHorizontalScrollbar() { 534 checkThread(); 535 return mProvider.overlayHorizontalScrollbar(); 536 } 537 538 /** 539 * Gets whether vertical scrollbar has overlay style. 540 * 541 * @return true if vertical scrollbar has overlay style 542 */ 543 public boolean overlayVerticalScrollbar() { 544 checkThread(); 545 return mProvider.overlayVerticalScrollbar(); 546 } 547 548 /** 549 * Gets the visible height (in pixels) of the embedded title bar (if any). 550 * 551 * @deprecated This method is now obsolete. 552 */ 553 public int getVisibleTitleHeight() { 554 checkThread(); 555 return mProvider.getVisibleTitleHeight(); 556 } 557 558 /** 559 * Gets the SSL certificate for the main top-level page or null if there is 560 * no certificate (the site is not secure). 561 * 562 * @return the SSL certificate for the main top-level page 563 */ 564 public SslCertificate getCertificate() { 565 checkThread(); 566 return mProvider.getCertificate(); 567 } 568 569 /** 570 * Sets the SSL certificate for the main top-level page. 571 */ 572 public void setCertificate(SslCertificate certificate) { 573 checkThread(); 574 mProvider.setCertificate(certificate); 575 } 576 577 //------------------------------------------------------------------------- 578 // Methods called by activity 579 //------------------------------------------------------------------------- 580 581 /** 582 * Sets a username and password pair for the specified host. This data is 583 * used by the Webview to autocomplete username and password fields in web 584 * forms. Note that this is unrelated to the credentials used for HTTP 585 * authentication. 586 * 587 * @param host the host that required the credentials 588 * @param username the username for the given host 589 * @param password the password for the given host 590 * @see WebViewDatabase#clearUsernamePassword 591 * @see WebViewDatabase#hasUsernamePassword 592 */ 593 public void savePassword(String host, String username, String password) { 594 checkThread(); 595 mProvider.savePassword(host, username, password); 596 } 597 598 /** 599 * Stores HTTP authentication credentials for a given host and realm. This 600 * method is intended to be used with 601 * {@link WebViewClient#onReceivedHttpAuthRequest}. 602 * 603 * @param host the host to which the credentials apply 604 * @param realm the realm to which the credentials apply 605 * @param username the username 606 * @param password the password 607 * @see getHttpAuthUsernamePassword 608 * @see WebViewDatabase#hasHttpAuthUsernamePassword 609 * @see WebViewDatabase#clearHttpAuthUsernamePassword 610 */ 611 public void setHttpAuthUsernamePassword(String host, String realm, 612 String username, String password) { 613 checkThread(); 614 mProvider.setHttpAuthUsernamePassword(host, realm, username, password); 615 } 616 617 /** 618 * Retrieves HTTP authentication credentials for a given host and realm. 619 * This method is intended to be used with 620 * {@link WebViewClient#onReceivedHttpAuthRequest}. 621 * 622 * @param host the host to which the credentials apply 623 * @param realm the realm to which the credentials apply 624 * @return the credentials as a String array, if found. The first element 625 * is the username and the second element is the password. Null if 626 * no credentials are found. 627 * @see setHttpAuthUsernamePassword 628 * @see WebViewDatabase#hasHttpAuthUsernamePassword 629 * @see WebViewDatabase#clearHttpAuthUsernamePassword 630 */ 631 public String[] getHttpAuthUsernamePassword(String host, String realm) { 632 checkThread(); 633 return mProvider.getHttpAuthUsernamePassword(host, realm); 634 } 635 636 /** 637 * Destroys the internal state of this WebView. This method should be called 638 * after this WebView has been removed from the view system. No other 639 * methods may be called on this WebView after destroy. 640 */ 641 public void destroy() { 642 checkThread(); 643 mProvider.destroy(); 644 } 645 646 /** 647 * Enables platform notifications of data state and proxy changes. 648 * Notifications are enabled by default. 649 * 650 * @deprecated This method is now obsolete. 651 */ 652 @Deprecated 653 public static void enablePlatformNotifications() { 654 checkThread(); 655 getFactory().getStatics().setPlatformNotificationsEnabled(true); 656 } 657 658 /** 659 * Disables platform notifications of data state and proxy changes. 660 * Notifications are enabled by default. 661 * 662 * @deprecated This method is now obsolete. 663 */ 664 @Deprecated 665 public static void disablePlatformNotifications() { 666 checkThread(); 667 getFactory().getStatics().setPlatformNotificationsEnabled(false); 668 } 669 670 /** 671 * Informs WebView of the network state. This is used to set 672 * the JavaScript property window.navigator.isOnline and 673 * generates the online/offline event as specified in HTML5, sec. 5.7.7 674 * 675 * @param networkUp a boolean indicating if network is available 676 */ 677 public void setNetworkAvailable(boolean networkUp) { 678 checkThread(); 679 mProvider.setNetworkAvailable(networkUp); 680 } 681 682 /** 683 * Saves the state of this WebView used in 684 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 685 * method no longer stores the display data for this WebView. The previous 686 * behavior could potentially leak files if {@link #restoreState} was never 687 * called. See {@link #savePicture} and {@link #restorePicture} for saving 688 * and restoring the display data. 689 * 690 * @param outState the Bundle to store this WebView's state 691 * @return the same copy of the back/forward list used to save the state. If 692 * saveState fails, the returned list will be null. 693 * @see #savePicture 694 * @see #restorePicture 695 */ 696 public WebBackForwardList saveState(Bundle outState) { 697 checkThread(); 698 return mProvider.saveState(outState); 699 } 700 701 /** 702 * Saves the current display data to the Bundle given. Used in conjunction 703 * with {@link #saveState}. 704 * @param b a Bundle to store the display data 705 * @param dest the file to store the serialized picture data. Will be 706 * overwritten with this WebView's picture data. 707 * @return true if the picture was successfully saved 708 * @deprecated This method is now obsolete. 709 */ 710 @Deprecated 711 public boolean savePicture(Bundle b, final File dest) { 712 checkThread(); 713 return mProvider.savePicture(b, dest); 714 } 715 716 /** 717 * Restores the display data that was saved in {@link #savePicture}. Used in 718 * conjunction with {@link #restoreState}. Note that this will not work if 719 * this WebView is hardware accelerated. 720 * 721 * @param b a Bundle containing the saved display data 722 * @param src the file where the picture data was stored 723 * @return true if the picture was successfully restored 724 * @deprecated This method is now obsolete. 725 */ 726 @Deprecated 727 public boolean restorePicture(Bundle b, File src) { 728 checkThread(); 729 return mProvider.restorePicture(b, src); 730 } 731 732 /** 733 * Restores the state of this WebView from the given Bundle. This method is 734 * intended for use in {@link android.app.Activity#onRestoreInstanceState} 735 * and should be called to restore the state of this WebView. If 736 * it is called after this WebView has had a chance to build state (load 737 * pages, create a back/forward list, etc.) there may be undesirable 738 * side-effects. Please note that this method no longer restores the 739 * display data for this WebView. See {@link #savePicture} and {@link 740 * #restorePicture} for saving and restoring the display data. 741 * 742 * @param inState the incoming Bundle of state 743 * @return the restored back/forward list or null if restoreState failed 744 * @see #savePicture 745 * @see #restorePicture 746 */ 747 public WebBackForwardList restoreState(Bundle inState) { 748 checkThread(); 749 return mProvider.restoreState(inState); 750 } 751 752 /** 753 * Loads the given URL with the specified additional HTTP headers. 754 * 755 * @param url the URL of the resource to load 756 * @param additionalHttpHeaders the additional headers to be used in the 757 * HTTP request for this URL, specified as a map from name to 758 * value. Note that if this map contains any of the headers 759 * that are set by default by this WebView, such as those 760 * controlling caching, accept types or the User-Agent, their 761 * values may be overriden by this WebView's defaults. 762 */ 763 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 764 checkThread(); 765 mProvider.loadUrl(url, additionalHttpHeaders); 766 } 767 768 /** 769 * Loads the given URL. 770 * 771 * @param url the URL of the resource to load 772 */ 773 public void loadUrl(String url) { 774 checkThread(); 775 mProvider.loadUrl(url); 776 } 777 778 /** 779 * Loads the URL with postData using "POST" method into this WebView. If url 780 * is not a network URL, it will be loaded with {link 781 * {@link #loadUrl(String)} instead. 782 * 783 * @param url the URL of the resource to load 784 * @param postData the data will be passed to "POST" request 785 */ 786 public void postUrl(String url, byte[] postData) { 787 checkThread(); 788 mProvider.postUrl(url, postData); 789 } 790 791 /** 792 * Loads the given data into this WebView using a 'data' scheme URL. 793 * <p> 794 * Note that JavaScript's same origin policy means that script running in a 795 * page loaded using this method will be unable to access content loaded 796 * using any scheme other than 'data', including 'http(s)'. To avoid this 797 * restriction, use {@link 798 * #loadDataWithBaseURL(String,String,String,String,String) 799 * loadDataWithBaseURL()} with an appropriate base URL. 800 * <p> 801 * The encoding parameter specifies whether the data is base64 or URL 802 * encoded. If the data is base64 encoded, the value of the encoding 803 * parameter must be 'base64'. For all other values of the parameter, 804 * including null, it is assumed that the data uses ASCII encoding for 805 * octets inside the range of safe URL characters and use the standard %xx 806 * hex encoding of URLs for octets outside that range. For example, '#', 807 * '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 808 * <p> 809 * The 'data' scheme URL formed by this method uses the default US-ASCII 810 * charset. If you need need to set a different charset, you should form a 811 * 'data' scheme URL which explicitly specifies a charset parameter in the 812 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 813 * Note that the charset obtained from the mediatype portion of a data URL 814 * always overrides that specified in the HTML or XML document itself. 815 * 816 * @param data a String of data in the given encoding 817 * @param mimeType the MIME type of the data, e.g. 'text/html' 818 * @param encoding the encoding of the data 819 */ 820 public void loadData(String data, String mimeType, String encoding) { 821 checkThread(); 822 mProvider.loadData(data, mimeType, encoding); 823 } 824 825 /** 826 * Loads the given data into this WebView, using baseUrl as the base URL for 827 * the content. The base URL is used both to resolve relative URLs and when 828 * applying JavaScript's same origin policy. The historyUrl is used for the 829 * history entry. 830 * <p> 831 * Note that content specified in this way can access local device files 832 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 833 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 834 * <p> 835 * If the base URL uses the data scheme, this method is equivalent to 836 * calling {@link #loadData(String,String,String) loadData()} and the 837 * historyUrl is ignored. 838 * 839 * @param baseUrl the URL to use as the page's base URL. If null defaults to 840 * 'about:blank'. 841 * @param data a String of data in the given encoding 842 * @param mimeType the MIMEType of the data, e.g. 'text/html'. If null, 843 * defaults to 'text/html'. 844 * @param encoding the encoding of the data 845 * @param historyUrl the URL to use as the history entry. If null defaults 846 * to 'about:blank'. 847 */ 848 public void loadDataWithBaseURL(String baseUrl, String data, 849 String mimeType, String encoding, String historyUrl) { 850 checkThread(); 851 mProvider.loadDataWithBaseURL(baseUrl, data, mimeType, encoding, historyUrl); 852 } 853 854 /** 855 * Saves the current view as a web archive. 856 * 857 * @param filename the filename where the archive should be placed 858 */ 859 public void saveWebArchive(String filename) { 860 checkThread(); 861 mProvider.saveWebArchive(filename); 862 } 863 864 /** 865 * Saves the current view as a web archive. 866 * 867 * @param basename the filename where the archive should be placed 868 * @param autoname if false, takes basename to be a file. If true, basename 869 * is assumed to be a directory in which a filename will be 870 * chosen according to the URL of the current page. 871 * @param callback called after the web archive has been saved. The 872 * parameter for onReceiveValue will either be the filename 873 * under which the file was saved, or null if saving the 874 * file failed. 875 */ 876 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 877 checkThread(); 878 mProvider.saveWebArchive(basename, autoname, callback); 879 } 880 881 /** 882 * Stops the current load. 883 */ 884 public void stopLoading() { 885 checkThread(); 886 mProvider.stopLoading(); 887 } 888 889 /** 890 * Reloads the current URL. 891 */ 892 public void reload() { 893 checkThread(); 894 mProvider.reload(); 895 } 896 897 /** 898 * Gets whether this WebView has a back history item. 899 * 900 * @return true iff this WebView has a back history item 901 */ 902 public boolean canGoBack() { 903 checkThread(); 904 return mProvider.canGoBack(); 905 } 906 907 /** 908 * Goes back in the history of this WebView. 909 */ 910 public void goBack() { 911 checkThread(); 912 mProvider.goBack(); 913 } 914 915 /** 916 * Gets whether this WebView has a forward history item. 917 * 918 * @return true iff this Webview has a forward history item 919 */ 920 public boolean canGoForward() { 921 checkThread(); 922 return mProvider.canGoForward(); 923 } 924 925 /** 926 * Goes forward in the history of this WebView. 927 */ 928 public void goForward() { 929 checkThread(); 930 mProvider.goForward(); 931 } 932 933 /** 934 * Gets whether the page can go back or forward the given 935 * number of steps. 936 * 937 * @param steps the negative or positive number of steps to move the 938 * history 939 */ 940 public boolean canGoBackOrForward(int steps) { 941 checkThread(); 942 return mProvider.canGoBackOrForward(steps); 943 } 944 945 /** 946 * Goes to the history item that is the number of steps away from 947 * the current item. Steps is negative if backward and positive 948 * if forward. 949 * 950 * @param steps the number of steps to take back or forward in the back 951 * forward list 952 */ 953 public void goBackOrForward(int steps) { 954 checkThread(); 955 mProvider.goBackOrForward(steps); 956 } 957 958 /** 959 * Gets whether private browsing is enabled in this WebView. 960 */ 961 public boolean isPrivateBrowsingEnabled() { 962 checkThread(); 963 return mProvider.isPrivateBrowsingEnabled(); 964 } 965 966 /** 967 * Scrolls the contents of this WebView up by half the view size. 968 * 969 * @param top true to jump to the top of the page 970 * @return true if the page was scrolled 971 */ 972 public boolean pageUp(boolean top) { 973 checkThread(); 974 return mProvider.pageUp(top); 975 } 976 977 /** 978 * Scrolls the contents of this WebView down by half the page size. 979 * 980 * @param bottom true to jump to bottom of page 981 * @return true if the page was scrolled 982 */ 983 public boolean pageDown(boolean bottom) { 984 checkThread(); 985 return mProvider.pageDown(bottom); 986 } 987 988 /** 989 * Clears this WebView so that onDraw() will draw nothing but white background, 990 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY. 991 */ 992 public void clearView() { 993 checkThread(); 994 mProvider.clearView(); 995 } 996 997 /** 998 * Gets a new picture that captures the current contents of this WebView. 999 * The picture is of the entire document being displayed, and is not 1000 * limited to the area currently displayed by this WebView. Also, the 1001 * picture is a static copy and is unaffected by later changes to the 1002 * content being displayed. 1003 * <p> 1004 * Note that due to internal changes, for API levels between 1005 * {@link android.os.Build.VERSION_CODES#HONEYCOMB} and 1006 * {@link android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH} inclusive, the 1007 * picture does not include fixed position elements or scrollable divs. 1008 * 1009 * @return a picture that captures the current contents of this WebView 1010 */ 1011 public Picture capturePicture() { 1012 checkThread(); 1013 return mProvider.capturePicture(); 1014 } 1015 1016 /** 1017 * Gets the current scale of this WebView. 1018 * 1019 * @return the current scale 1020 */ 1021 @ViewDebug.ExportedProperty(category = "webview") 1022 public float getScale() { 1023 checkThread(); 1024 return mProvider.getScale(); 1025 } 1026 1027 /** 1028 * Sets the initial scale for this WebView. 0 means default. If 1029 * {@link WebSettings#getUseWideViewPort()} is true, it zooms out all the 1030 * way. Otherwise it starts with 100%. If initial scale is greater than 0, 1031 * WebView starts with this value as initial scale. 1032 * Please note that unlike the scale properties in the viewport meta tag, 1033 * this method doesn't take the screen density into account. 1034 * 1035 * @param scaleInPercent the initial scale in percent 1036 */ 1037 public void setInitialScale(int scaleInPercent) { 1038 checkThread(); 1039 mProvider.setInitialScale(scaleInPercent); 1040 } 1041 1042 /** 1043 * Invokes the graphical zoom picker widget for this WebView. This will 1044 * result in the zoom widget appearing on the screen to control the zoom 1045 * level of this WebView. 1046 */ 1047 public void invokeZoomPicker() { 1048 checkThread(); 1049 mProvider.invokeZoomPicker(); 1050 } 1051 1052 /** 1053 * Gets a HitTestResult based on the current cursor node. If a HTML::a 1054 * tag is found and the anchor has a non-JavaScript URL, the HitTestResult 1055 * type is set to SRC_ANCHOR_TYPE and the URL is set in the "extra" field. 1056 * If the anchor does not have a URL or if it is a JavaScript URL, the type 1057 * will be UNKNOWN_TYPE and the URL has to be retrieved through 1058 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1059 * found, the HitTestResult type is set to IMAGE_TYPE and the URL is set in 1060 * the "extra" field. A type of 1061 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a URL that has an image as 1062 * a child node. If a phone number is found, the HitTestResult type is set 1063 * to PHONE_TYPE and the phone number is set in the "extra" field of 1064 * HitTestResult. If a map address is found, the HitTestResult type is set 1065 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1066 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1067 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1068 * HitTestResult type is set to UNKNOWN_TYPE. 1069 */ 1070 public HitTestResult getHitTestResult() { 1071 checkThread(); 1072 return mProvider.getHitTestResult(); 1073 } 1074 1075 /** 1076 * Requests the anchor or image element URL at the last tapped point. 1077 * If hrefMsg is null, this method returns immediately and does not 1078 * dispatch hrefMsg to its target. If the tapped point hits an image, 1079 * an anchor, or an image in an anchor, the message associates 1080 * strings in named keys in its data. The value paired with the key 1081 * may be an empty string. 1082 * 1083 * @param hrefMsg the message to be dispatched with the result of the 1084 * request. The message data contains three keys. "url" 1085 * returns the anchor's href attribute. "title" returns the 1086 * anchor's text. "src" returns the image's src attribute. 1087 */ 1088 public void requestFocusNodeHref(Message hrefMsg) { 1089 checkThread(); 1090 mProvider.requestFocusNodeHref(hrefMsg); 1091 } 1092 1093 /** 1094 * Requests the URL of the image last touched by the user. msg will be sent 1095 * to its target with a String representing the URL as its object. 1096 * 1097 * @param msg the message to be dispatched with the result of the request 1098 * as the data member with "url" as key. The result can be null. 1099 */ 1100 public void requestImageRef(Message msg) { 1101 checkThread(); 1102 mProvider.requestImageRef(msg); 1103 } 1104 1105 /** 1106 * Gets the URL for the current page. This is not always the same as the URL 1107 * passed to WebViewClient.onPageStarted because although the load for 1108 * that URL has begun, the current page may not have changed. 1109 * 1110 * @return the URL for the current page 1111 */ 1112 @ViewDebug.ExportedProperty(category = "webview") 1113 public String getUrl() { 1114 checkThread(); 1115 return mProvider.getUrl(); 1116 } 1117 1118 /** 1119 * Gets the original URL for the current page. This is not always the same 1120 * as the URL passed to WebViewClient.onPageStarted because although the 1121 * load for that URL has begun, the current page may not have changed. 1122 * Also, there may have been redirects resulting in a different URL to that 1123 * originally requested. 1124 * 1125 * @return the URL that was originally requested for the current page 1126 */ 1127 @ViewDebug.ExportedProperty(category = "webview") 1128 public String getOriginalUrl() { 1129 checkThread(); 1130 return mProvider.getOriginalUrl(); 1131 } 1132 1133 /** 1134 * Gets the title for the current page. This is the title of the current page 1135 * until WebViewClient.onReceivedTitle is called. 1136 * 1137 * @return the title for the current page 1138 */ 1139 @ViewDebug.ExportedProperty(category = "webview") 1140 public String getTitle() { 1141 checkThread(); 1142 return mProvider.getTitle(); 1143 } 1144 1145 /** 1146 * Gets the favicon for the current page. This is the favicon of the current 1147 * page until WebViewClient.onReceivedIcon is called. 1148 * 1149 * @return the favicon for the current page 1150 */ 1151 public Bitmap getFavicon() { 1152 checkThread(); 1153 return mProvider.getFavicon(); 1154 } 1155 1156 /** 1157 * Gets the touch icon URL for the apple-touch-icon <link> element, or 1158 * a URL on this site's server pointing to the standard location of a 1159 * touch icon. 1160 * 1161 * @hide 1162 */ 1163 public String getTouchIconUrl() { 1164 return mProvider.getTouchIconUrl(); 1165 } 1166 1167 /** 1168 * Gets the progress for the current page. 1169 * 1170 * @return the progress for the current page between 0 and 100 1171 */ 1172 public int getProgress() { 1173 checkThread(); 1174 return mProvider.getProgress(); 1175 } 1176 1177 /** 1178 * Gets the height of the HTML content. 1179 * 1180 * @return the height of the HTML content 1181 */ 1182 @ViewDebug.ExportedProperty(category = "webview") 1183 public int getContentHeight() { 1184 checkThread(); 1185 return mProvider.getContentHeight(); 1186 } 1187 1188 /** 1189 * Gets the width of the HTML content. 1190 * 1191 * @return the width of the HTML content 1192 * @hide 1193 */ 1194 @ViewDebug.ExportedProperty(category = "webview") 1195 public int getContentWidth() { 1196 return mProvider.getContentWidth(); 1197 } 1198 1199 /** 1200 * Pauses all layout, parsing, and JavaScript timers for all WebViews. This 1201 * is a global requests, not restricted to just this WebView. This can be 1202 * useful if the application has been paused. 1203 */ 1204 public void pauseTimers() { 1205 checkThread(); 1206 mProvider.pauseTimers(); 1207 } 1208 1209 /** 1210 * Resumes all layout, parsing, and JavaScript timers for all WebViews. 1211 * This will resume dispatching all timers. 1212 */ 1213 public void resumeTimers() { 1214 checkThread(); 1215 mProvider.resumeTimers(); 1216 } 1217 1218 /** 1219 * Pauses any extra processing associated with this WebView and its 1220 * associated DOM, plugins, JavaScript etc. For example, if this WebView is 1221 * taken offscreen, this could be called to reduce unnecessary CPU or 1222 * network traffic. When this WebView is again "active", call onResume(). 1223 * Note that this differs from pauseTimers(), which affects all WebViews. 1224 */ 1225 public void onPause() { 1226 checkThread(); 1227 mProvider.onPause(); 1228 } 1229 1230 /** 1231 * Resumes a WebView after a previous call to onPause(). 1232 */ 1233 public void onResume() { 1234 checkThread(); 1235 mProvider.onResume(); 1236 } 1237 1238 /** 1239 * Gets whether this WebView is paused, meaning onPause() was called. 1240 * Calling onResume() sets the paused state back to false. 1241 * 1242 * @hide 1243 */ 1244 public boolean isPaused() { 1245 return mProvider.isPaused(); 1246 } 1247 1248 /** 1249 * Informs this WebView that memory is low so that it can free any available 1250 * memory. 1251 */ 1252 public void freeMemory() { 1253 checkThread(); 1254 mProvider.freeMemory(); 1255 } 1256 1257 /** 1258 * Clears the resource cache. Note that the cache is per-application, so 1259 * this will clear the cache for all WebViews used. 1260 * 1261 * @param includeDiskFiles if false, only the RAM cache is cleared 1262 */ 1263 public void clearCache(boolean includeDiskFiles) { 1264 checkThread(); 1265 mProvider.clearCache(includeDiskFiles); 1266 } 1267 1268 /** 1269 * Removes the autocomplete popup from the currently focused form field, if 1270 * present. Note this only affects the display of the autocomplete popup, 1271 * it does not remove any saved form data from this WebView's store. To do 1272 * that, use {@link WebViewDatabase#clearFormData}. 1273 */ 1274 public void clearFormData() { 1275 checkThread(); 1276 mProvider.clearFormData(); 1277 } 1278 1279 /** 1280 * Tells this WebView to clear its internal back/forward list. 1281 */ 1282 public void clearHistory() { 1283 checkThread(); 1284 mProvider.clearHistory(); 1285 } 1286 1287 /** 1288 * Clears the SSL preferences table stored in response to proceeding with 1289 * SSL certificate errors. 1290 */ 1291 public void clearSslPreferences() { 1292 checkThread(); 1293 mProvider.clearSslPreferences(); 1294 } 1295 1296 /** 1297 * Gets the WebBackForwardList for this WebView. This contains the 1298 * back/forward list for use in querying each item in the history stack. 1299 * This is a copy of the private WebBackForwardList so it contains only a 1300 * snapshot of the current state. Multiple calls to this method may return 1301 * different objects. The object returned from this method will not be 1302 * updated to reflect any new state. 1303 */ 1304 public WebBackForwardList copyBackForwardList() { 1305 checkThread(); 1306 return mProvider.copyBackForwardList(); 1307 1308 } 1309 1310 /** 1311 * Registers the listener to be notified as find-on-page operations 1312 * progress. This will replace the current listener. 1313 * 1314 * @param listener an implementation of {@link FindListener} 1315 */ 1316 public void setFindListener(FindListener listener) { 1317 checkThread(); 1318 mProvider.setFindListener(listener); 1319 } 1320 1321 /** 1322 * Highlights and scrolls to the next match found by {@link #findAll} or 1323 * {@link #findAllAsync}, wrapping around page boundaries as necessary. 1324 * Notifies any registered {@link FindListener}. If neither 1325 * {@link #findAll} nor {@link #findAllAsync(String)} has been called yet, 1326 * or if {@link #clearMatches} has been called since the last find 1327 * operation, this function does nothing. 1328 * 1329 * @param forward the direction to search 1330 * @see #setFindListener 1331 */ 1332 public void findNext(boolean forward) { 1333 checkThread(); 1334 mProvider.findNext(forward); 1335 } 1336 1337 /** 1338 * Finds all instances of find on the page and highlights them. 1339 * Notifies any registered {@link FindListener}. 1340 * 1341 * @param find the string to find 1342 * @return the number of occurances of the String "find" that were found 1343 * @deprecated {@link #findAllAsync} is preferred. 1344 * @see #setFindListener 1345 */ 1346 @Deprecated 1347 public int findAll(String find) { 1348 checkThread(); 1349 StrictMode.noteSlowCall("findAll blocks UI: prefer findAllAsync"); 1350 return mProvider.findAll(find); 1351 } 1352 1353 /** 1354 * Finds all instances of find on the page and highlights them, 1355 * asynchronously. Notifies any registered {@link FindListener}. 1356 * Successive calls to this or {@link #findAll} will cancel any 1357 * pending searches. 1358 * 1359 * @param find the string to find. 1360 * @see #setFindListener 1361 */ 1362 public void findAllAsync(String find) { 1363 checkThread(); 1364 mProvider.findAllAsync(find); 1365 } 1366 1367 /** 1368 * Starts an ActionMode for finding text in this WebView. Only works if this 1369 * WebView is attached to the view system. 1370 * 1371 * @param text if non-null, will be the initial text to search for. 1372 * Otherwise, the last String searched for in this WebView will 1373 * be used to start. 1374 * @param showIme if true, show the IME, assuming the user will begin typing. 1375 * If false and text is non-null, perform a find all. 1376 * @return true if the find dialog is shown, false otherwise 1377 */ 1378 public boolean showFindDialog(String text, boolean showIme) { 1379 checkThread(); 1380 return mProvider.showFindDialog(text, showIme); 1381 } 1382 1383 /** 1384 * Gets the first substring consisting of the address of a physical 1385 * location. Currently, only addresses in the United States are detected, 1386 * and consist of: 1387 * <ul> 1388 * <li>a house number</li> 1389 * <li>a street name</li> 1390 * <li>a street type (Road, Circle, etc), either spelled out or 1391 * abbreviated</li> 1392 * <li>a city name</li> 1393 * <li>a state or territory, either spelled out or two-letter abbr</li> 1394 * <li>an optional 5 digit or 9 digit zip code</li> 1395 * </ul> 1396 * All names must be correctly capitalized, and the zip code, if present, 1397 * must be valid for the state. The street type must be a standard USPS 1398 * spelling or abbreviation. The state or territory must also be spelled 1399 * or abbreviated using USPS standards. The house number may not exceed 1400 * five digits. 1401 * 1402 * @param addr the string to search for addresses 1403 * @return the address, or if no address is found, null 1404 */ 1405 public static String findAddress(String addr) { 1406 return getFactory().getStatics().findAddress(addr); 1407 } 1408 1409 /** 1410 * Clears the highlighting surrounding text matches created by 1411 * {@link #findAll} or {@link #findAllAsync}. 1412 */ 1413 public void clearMatches() { 1414 checkThread(); 1415 mProvider.clearMatches(); 1416 } 1417 1418 /** 1419 * Queries the document to see if it contains any image references. The 1420 * message object will be dispatched with arg1 being set to 1 if images 1421 * were found and 0 if the document does not reference any images. 1422 * 1423 * @param response the message that will be dispatched with the result 1424 */ 1425 public void documentHasImages(Message response) { 1426 checkThread(); 1427 mProvider.documentHasImages(response); 1428 } 1429 1430 /** 1431 * Sets the WebViewClient that will receive various notifications and 1432 * requests. This will replace the current handler. 1433 * 1434 * @param client an implementation of WebViewClient 1435 */ 1436 public void setWebViewClient(WebViewClient client) { 1437 checkThread(); 1438 mProvider.setWebViewClient(client); 1439 } 1440 1441 /** 1442 * Registers the interface to be used when content can not be handled by 1443 * the rendering engine, and should be downloaded instead. This will replace 1444 * the current handler. 1445 * 1446 * @param listener an implementation of DownloadListener 1447 */ 1448 public void setDownloadListener(DownloadListener listener) { 1449 checkThread(); 1450 mProvider.setDownloadListener(listener); 1451 } 1452 1453 /** 1454 * Sets the chrome handler. This is an implementation of WebChromeClient for 1455 * use in handling JavaScript dialogs, favicons, titles, and the progress. 1456 * This will replace the current handler. 1457 * 1458 * @param client an implementation of WebChromeClient 1459 */ 1460 public void setWebChromeClient(WebChromeClient client) { 1461 checkThread(); 1462 mProvider.setWebChromeClient(client); 1463 } 1464 1465 /** 1466 * Sets the Picture listener. This is an interface used to receive 1467 * notifications of a new Picture. 1468 * 1469 * @param listener an implementation of WebView.PictureListener 1470 * @deprecated This method is now obsolete. 1471 */ 1472 @Deprecated 1473 public void setPictureListener(PictureListener listener) { 1474 checkThread(); 1475 mProvider.setPictureListener(listener); 1476 } 1477 1478 /** 1479 * Injects the supplied Java object into this WebView. The object is 1480 * injected into the JavaScript context of the main frame, using the 1481 * supplied name. This allows the Java object's public methods to be 1482 * accessed from JavaScript. Note that that injected objects will not 1483 * appear in JavaScript until the page is next (re)loaded. For example: 1484 * <pre> webView.addJavascriptInterface(new Object(), "injectedObject"); 1485 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 1486 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 1487 * <p> 1488 * <strong>IMPORTANT:</strong> 1489 * <ul> 1490 * <li> This method can be used to allow JavaScript to control the host 1491 * application. This is a powerful feature, but also presents a security 1492 * risk, particularly as JavaScript could use reflection to access an 1493 * injected object's public fields. Use of this method in a WebView 1494 * containing untrusted content could allow an attacker to manipulate the 1495 * host application in unintended ways, executing Java code with the 1496 * permissions of the host application. Use extreme care when using this 1497 * method in a WebView which could contain untrusted content.</li> 1498 * <li> JavaScript interacts with Java object on a private, background 1499 * thread of this WebView. Care is therefore required to maintain thread 1500 * safety.</li> 1501 * </ul> 1502 * 1503 * @param object the Java object to inject into this WebView's JavaScript 1504 * context. Null values are ignored. 1505 * @param name the name used to expose the object in JavaScript 1506 */ 1507 public void addJavascriptInterface(Object object, String name) { 1508 checkThread(); 1509 mProvider.addJavascriptInterface(object, name); 1510 } 1511 1512 /** 1513 * Removes a previously injected Java object from this WebView. Note that 1514 * the removal will not be reflected in JavaScript until the page is next 1515 * (re)loaded. See {@link #addJavascriptInterface}. 1516 * 1517 * @param name the name used to expose the object in JavaScript 1518 */ 1519 public void removeJavascriptInterface(String name) { 1520 checkThread(); 1521 mProvider.removeJavascriptInterface(name); 1522 } 1523 1524 /** 1525 * Gets the WebSettings object used to control the settings for this 1526 * WebView. 1527 * 1528 * @return a WebSettings object that can be used to control this WebView's 1529 * settings 1530 */ 1531 public WebSettings getSettings() { 1532 checkThread(); 1533 return mProvider.getSettings(); 1534 } 1535 1536 /** 1537 * Gets the list of currently loaded plugins. 1538 * 1539 * @return the list of currently loaded plugins 1540 * @deprecated This was used for Gears, which has been deprecated. 1541 * @hide 1542 */ 1543 @Deprecated 1544 public static synchronized PluginList getPluginList() { 1545 checkThread(); 1546 return new PluginList(); 1547 } 1548 1549 /** 1550 * @deprecated This was used for Gears, which has been deprecated. 1551 * @hide 1552 */ 1553 @Deprecated 1554 public void refreshPlugins(boolean reloadOpenPages) { 1555 checkThread(); 1556 } 1557 1558 /** 1559 * Puts this WebView into text selection mode. Do not rely on this 1560 * functionality; it will be deprecated in the future. 1561 * 1562 * @deprecated This method is now obsolete. 1563 */ 1564 @Deprecated 1565 public void emulateShiftHeld() { 1566 checkThread(); 1567 } 1568 1569 /** 1570 * @deprecated WebView no longer needs to implement 1571 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 1572 */ 1573 @Override 1574 // Cannot add @hide as this can always be accessed via the interface. 1575 @Deprecated 1576 public void onChildViewAdded(View parent, View child) {} 1577 1578 /** 1579 * @deprecated WebView no longer needs to implement 1580 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 1581 */ 1582 @Override 1583 // Cannot add @hide as this can always be accessed via the interface. 1584 @Deprecated 1585 public void onChildViewRemoved(View p, View child) {} 1586 1587 /** 1588 * @deprecated WebView should not have implemented 1589 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 1590 */ 1591 @Override 1592 // Cannot add @hide as this can always be accessed via the interface. 1593 @Deprecated 1594 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 1595 } 1596 1597 public void setMapTrackballToArrowKeys(boolean setMap) { 1598 checkThread(); 1599 mProvider.setMapTrackballToArrowKeys(setMap); 1600 } 1601 1602 1603 public void flingScroll(int vx, int vy) { 1604 checkThread(); 1605 mProvider.flingScroll(vx, vy); 1606 } 1607 1608 /** 1609 * Gets the zoom controls for this WebView, as a separate View. The caller 1610 * is responsible for inserting this View into the layout hierarchy. 1611 * <p/> 1612 * API level {@link android.os.Build.VERSION_CODES#CUPCAKE} introduced 1613 * built-in zoom mechanisms for the WebView, as opposed to these separate 1614 * zoom controls. The built-in mechanisms are preferred and can be enabled 1615 * using {@link WebSettings#setBuiltInZoomControls}. 1616 * 1617 * @deprecated the built-in zoom mechanisms are preferred 1618 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN} 1619 */ 1620 @Deprecated 1621 public View getZoomControls() { 1622 checkThread(); 1623 return mProvider.getZoomControls(); 1624 } 1625 1626 /** 1627 * Gets whether this WebView can be zoomed in. 1628 * 1629 * @return true if this WebView can be zoomed in 1630 */ 1631 public boolean canZoomIn() { 1632 checkThread(); 1633 return mProvider.canZoomIn(); 1634 } 1635 1636 /** 1637 * Gets whether this WebView can be zoomed out. 1638 * 1639 * @return true if this WebView can be zoomed out 1640 */ 1641 public boolean canZoomOut() { 1642 checkThread(); 1643 return mProvider.canZoomOut(); 1644 } 1645 1646 /** 1647 * Performs zoom in in this WebView. 1648 * 1649 * @return true if zoom in succeeds, false if no zoom changes 1650 */ 1651 public boolean zoomIn() { 1652 checkThread(); 1653 return mProvider.zoomIn(); 1654 } 1655 1656 /** 1657 * Performs zoom out in this WebView. 1658 * 1659 * @return true if zoom out succeeds, false if no zoom changes 1660 */ 1661 public boolean zoomOut() { 1662 checkThread(); 1663 return mProvider.zoomOut(); 1664 } 1665 1666 /** 1667 * @deprecated This method is now obsolete. 1668 */ 1669 @Deprecated 1670 public void debugDump() { 1671 checkThread(); 1672 } 1673 1674 /** 1675 * See {@link ViewDebug.HierarchyHandler#dumpViewHierarchyWithProperties(BufferedWriter, int)} 1676 * @hide 1677 */ 1678 @Override 1679 public void dumpViewHierarchyWithProperties(BufferedWriter out, int level) { 1680 mProvider.dumpViewHierarchyWithProperties(out, level); 1681 } 1682 1683 /** 1684 * See {@link ViewDebug.HierarchyHandler#findHierarchyView(String, int)} 1685 * @hide 1686 */ 1687 @Override 1688 public View findHierarchyView(String className, int hashCode) { 1689 return mProvider.findHierarchyView(className, hashCode); 1690 } 1691 1692 //------------------------------------------------------------------------- 1693 // Interface for WebView providers 1694 //------------------------------------------------------------------------- 1695 1696 /** 1697 * Gets the WebViewProvider. Used by providers to obtain the underlying 1698 * implementation, e.g. when the appliction responds to 1699 * WebViewClient.onCreateWindow() request. 1700 * 1701 * @hide WebViewProvider is not public API. 1702 */ 1703 public WebViewProvider getWebViewProvider() { 1704 return mProvider; 1705 } 1706 1707 /** 1708 * Callback interface, allows the provider implementation to access non-public methods 1709 * and fields, and make super-class calls in this WebView instance. 1710 * @hide Only for use by WebViewProvider implementations 1711 */ 1712 public class PrivateAccess { 1713 // ---- Access to super-class methods ---- 1714 public int super_getScrollBarStyle() { 1715 return WebView.super.getScrollBarStyle(); 1716 } 1717 1718 public void super_scrollTo(int scrollX, int scrollY) { 1719 WebView.super.scrollTo(scrollX, scrollY); 1720 } 1721 1722 public void super_computeScroll() { 1723 WebView.super.computeScroll(); 1724 } 1725 1726 public boolean super_onHoverEvent(MotionEvent event) { 1727 return WebView.super.onHoverEvent(event); 1728 } 1729 1730 public boolean super_performAccessibilityAction(int action, Bundle arguments) { 1731 return WebView.super.performAccessibilityAction(action, arguments); 1732 } 1733 1734 public boolean super_performLongClick() { 1735 return WebView.super.performLongClick(); 1736 } 1737 1738 public boolean super_setFrame(int left, int top, int right, int bottom) { 1739 return WebView.super.setFrame(left, top, right, bottom); 1740 } 1741 1742 public boolean super_dispatchKeyEvent(KeyEvent event) { 1743 return WebView.super.dispatchKeyEvent(event); 1744 } 1745 1746 public boolean super_onGenericMotionEvent(MotionEvent event) { 1747 return WebView.super.onGenericMotionEvent(event); 1748 } 1749 1750 public boolean super_requestFocus(int direction, Rect previouslyFocusedRect) { 1751 return WebView.super.requestFocus(direction, previouslyFocusedRect); 1752 } 1753 1754 public void super_setLayoutParams(ViewGroup.LayoutParams params) { 1755 WebView.super.setLayoutParams(params); 1756 } 1757 1758 // ---- Access to non-public methods ---- 1759 public void overScrollBy(int deltaX, int deltaY, 1760 int scrollX, int scrollY, 1761 int scrollRangeX, int scrollRangeY, 1762 int maxOverScrollX, int maxOverScrollY, 1763 boolean isTouchEvent) { 1764 WebView.this.overScrollBy(deltaX, deltaY, scrollX, scrollY, scrollRangeX, scrollRangeY, 1765 maxOverScrollX, maxOverScrollY, isTouchEvent); 1766 } 1767 1768 public void awakenScrollBars(int duration) { 1769 WebView.this.awakenScrollBars(duration); 1770 } 1771 1772 public void awakenScrollBars(int duration, boolean invalidate) { 1773 WebView.this.awakenScrollBars(duration, invalidate); 1774 } 1775 1776 public float getVerticalScrollFactor() { 1777 return WebView.this.getVerticalScrollFactor(); 1778 } 1779 1780 public float getHorizontalScrollFactor() { 1781 return WebView.this.getHorizontalScrollFactor(); 1782 } 1783 1784 public void setMeasuredDimension(int measuredWidth, int measuredHeight) { 1785 WebView.this.setMeasuredDimension(measuredWidth, measuredHeight); 1786 } 1787 1788 public void onScrollChanged(int l, int t, int oldl, int oldt) { 1789 WebView.this.onScrollChanged(l, t, oldl, oldt); 1790 } 1791 1792 public int getHorizontalScrollbarHeight() { 1793 return WebView.this.getHorizontalScrollbarHeight(); 1794 } 1795 1796 // ---- Access to (non-public) fields ---- 1797 /** Raw setter for the scroll X value, without invoking onScrollChanged handlers etc. */ 1798 public void setScrollXRaw(int scrollX) { 1799 WebView.this.mScrollX = scrollX; 1800 } 1801 1802 /** Raw setter for the scroll Y value, without invoking onScrollChanged handlers etc. */ 1803 public void setScrollYRaw(int scrollY) { 1804 WebView.this.mScrollY = scrollY; 1805 } 1806 1807 } 1808 1809 //------------------------------------------------------------------------- 1810 // Private internal stuff 1811 //------------------------------------------------------------------------- 1812 1813 private WebViewProvider mProvider; 1814 1815 private void ensureProviderCreated() { 1816 checkThread(); 1817 if (mProvider == null) { 1818 // As this can get called during the base class constructor chain, pass the minimum 1819 // number of dependencies here; the rest are deferred to init(). 1820 mProvider = getFactory().createWebView(this, new PrivateAccess()); 1821 } 1822 } 1823 1824 private static synchronized WebViewFactoryProvider getFactory() { 1825 // For now the main purpose of this function (and the factory abstration) is to keep 1826 // us honest and minimize usage of WebViewClassic internals when binding the proxy. 1827 checkThread(); 1828 return WebViewFactory.getProvider(); 1829 } 1830 1831 private static void checkThread() { 1832 if (Looper.myLooper() != Looper.getMainLooper()) { 1833 Throwable throwable = new Throwable( 1834 "Warning: A WebView method was called on thread '" + 1835 Thread.currentThread().getName() + "'. " + 1836 "All WebView methods must be called on the UI thread. " + 1837 "Future versions of WebView may not support use on other threads."); 1838 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 1839 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 1840 } 1841 } 1842 1843 //------------------------------------------------------------------------- 1844 // Override View methods 1845 //------------------------------------------------------------------------- 1846 1847 // TODO: Add a test that enumerates all methods in ViewDelegte & ScrollDelegate, and ensures 1848 // there's a corresponding override (or better, caller) for each of them in here. 1849 1850 @Override 1851 protected void onAttachedToWindow() { 1852 super.onAttachedToWindow(); 1853 mProvider.getViewDelegate().onAttachedToWindow(); 1854 } 1855 1856 @Override 1857 protected void onDetachedFromWindow() { 1858 mProvider.getViewDelegate().onDetachedFromWindow(); 1859 super.onDetachedFromWindow(); 1860 } 1861 1862 @Override 1863 public void setLayoutParams(ViewGroup.LayoutParams params) { 1864 mProvider.getViewDelegate().setLayoutParams(params); 1865 } 1866 1867 @Override 1868 public void setOverScrollMode(int mode) { 1869 super.setOverScrollMode(mode); 1870 // This method may called in the constructor chain, before the WebView provider is 1871 // created. (Fortunately, this is the only method we override that can get called by 1872 // any of the base class constructors). 1873 ensureProviderCreated(); 1874 mProvider.getViewDelegate().setOverScrollMode(mode); 1875 } 1876 1877 @Override 1878 public void setScrollBarStyle(int style) { 1879 mProvider.getViewDelegate().setScrollBarStyle(style); 1880 super.setScrollBarStyle(style); 1881 } 1882 1883 @Override 1884 protected int computeHorizontalScrollRange() { 1885 return mProvider.getScrollDelegate().computeHorizontalScrollRange(); 1886 } 1887 1888 @Override 1889 protected int computeHorizontalScrollOffset() { 1890 return mProvider.getScrollDelegate().computeHorizontalScrollOffset(); 1891 } 1892 1893 @Override 1894 protected int computeVerticalScrollRange() { 1895 return mProvider.getScrollDelegate().computeVerticalScrollRange(); 1896 } 1897 1898 @Override 1899 protected int computeVerticalScrollOffset() { 1900 return mProvider.getScrollDelegate().computeVerticalScrollOffset(); 1901 } 1902 1903 @Override 1904 protected int computeVerticalScrollExtent() { 1905 return mProvider.getScrollDelegate().computeVerticalScrollExtent(); 1906 } 1907 1908 @Override 1909 public void computeScroll() { 1910 mProvider.getScrollDelegate().computeScroll(); 1911 } 1912 1913 @Override 1914 public boolean onHoverEvent(MotionEvent event) { 1915 return mProvider.getViewDelegate().onHoverEvent(event); 1916 } 1917 1918 @Override 1919 public boolean onTouchEvent(MotionEvent event) { 1920 return mProvider.getViewDelegate().onTouchEvent(event); 1921 } 1922 1923 @Override 1924 public boolean onGenericMotionEvent(MotionEvent event) { 1925 return mProvider.getViewDelegate().onGenericMotionEvent(event); 1926 } 1927 1928 @Override 1929 public boolean onTrackballEvent(MotionEvent event) { 1930 return mProvider.getViewDelegate().onTrackballEvent(event); 1931 } 1932 1933 @Override 1934 public boolean onKeyDown(int keyCode, KeyEvent event) { 1935 return mProvider.getViewDelegate().onKeyDown(keyCode, event); 1936 } 1937 1938 @Override 1939 public boolean onKeyUp(int keyCode, KeyEvent event) { 1940 return mProvider.getViewDelegate().onKeyUp(keyCode, event); 1941 } 1942 1943 @Override 1944 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 1945 return mProvider.getViewDelegate().onKeyMultiple(keyCode, repeatCount, event); 1946 } 1947 1948 /* 1949 TODO: These are not currently implemented in WebViewClassic, but it seems inconsistent not 1950 to be delegating them too. 1951 1952 @Override 1953 public boolean onKeyPreIme(int keyCode, KeyEvent event) { 1954 return mProvider.getViewDelegate().onKeyPreIme(keyCode, event); 1955 } 1956 @Override 1957 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 1958 return mProvider.getViewDelegate().onKeyLongPress(keyCode, event); 1959 } 1960 @Override 1961 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 1962 return mProvider.getViewDelegate().onKeyShortcut(keyCode, event); 1963 } 1964 */ 1965 1966 @Deprecated 1967 @Override 1968 public boolean shouldDelayChildPressedState() { 1969 return mProvider.getViewDelegate().shouldDelayChildPressedState(); 1970 } 1971 1972 @Override 1973 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 1974 super.onInitializeAccessibilityNodeInfo(info); 1975 info.setClassName(WebView.class.getName()); 1976 mProvider.getViewDelegate().onInitializeAccessibilityNodeInfo(info); 1977 } 1978 1979 @Override 1980 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 1981 super.onInitializeAccessibilityEvent(event); 1982 event.setClassName(WebView.class.getName()); 1983 mProvider.getViewDelegate().onInitializeAccessibilityEvent(event); 1984 } 1985 1986 @Override 1987 public boolean performAccessibilityAction(int action, Bundle arguments) { 1988 return mProvider.getViewDelegate().performAccessibilityAction(action, arguments); 1989 } 1990 1991 /** @hide */ 1992 @Override 1993 protected void onDrawVerticalScrollBar(Canvas canvas, Drawable scrollBar, 1994 int l, int t, int r, int b) { 1995 mProvider.getViewDelegate().onDrawVerticalScrollBar(canvas, scrollBar, l, t, r, b); 1996 } 1997 1998 @Override 1999 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, boolean clampedY) { 2000 mProvider.getViewDelegate().onOverScrolled(scrollX, scrollY, clampedX, clampedY); 2001 } 2002 2003 @Override 2004 protected void onWindowVisibilityChanged(int visibility) { 2005 super.onWindowVisibilityChanged(visibility); 2006 mProvider.getViewDelegate().onWindowVisibilityChanged(visibility); 2007 } 2008 2009 @Override 2010 protected void onDraw(Canvas canvas) { 2011 mProvider.getViewDelegate().onDraw(canvas); 2012 } 2013 2014 @Override 2015 public boolean performLongClick() { 2016 return mProvider.getViewDelegate().performLongClick(); 2017 } 2018 2019 @Override 2020 protected void onConfigurationChanged(Configuration newConfig) { 2021 mProvider.getViewDelegate().onConfigurationChanged(newConfig); 2022 } 2023 2024 @Override 2025 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 2026 return mProvider.getViewDelegate().onCreateInputConnection(outAttrs); 2027 } 2028 2029 @Override 2030 protected void onVisibilityChanged(View changedView, int visibility) { 2031 super.onVisibilityChanged(changedView, visibility); 2032 mProvider.getViewDelegate().onVisibilityChanged(changedView, visibility); 2033 } 2034 2035 @Override 2036 public void onWindowFocusChanged(boolean hasWindowFocus) { 2037 mProvider.getViewDelegate().onWindowFocusChanged(hasWindowFocus); 2038 super.onWindowFocusChanged(hasWindowFocus); 2039 } 2040 2041 @Override 2042 protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { 2043 mProvider.getViewDelegate().onFocusChanged(focused, direction, previouslyFocusedRect); 2044 super.onFocusChanged(focused, direction, previouslyFocusedRect); 2045 } 2046 2047 /** @hide */ 2048 @Override 2049 protected boolean setFrame(int left, int top, int right, int bottom) { 2050 return mProvider.getViewDelegate().setFrame(left, top, right, bottom); 2051 } 2052 2053 @Override 2054 protected void onSizeChanged(int w, int h, int ow, int oh) { 2055 super.onSizeChanged(w, h, ow, oh); 2056 mProvider.getViewDelegate().onSizeChanged(w, h, ow, oh); 2057 } 2058 2059 @Override 2060 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 2061 super.onScrollChanged(l, t, oldl, oldt); 2062 mProvider.getViewDelegate().onScrollChanged(l, t, oldl, oldt); 2063 } 2064 2065 @Override 2066 public boolean dispatchKeyEvent(KeyEvent event) { 2067 return mProvider.getViewDelegate().dispatchKeyEvent(event); 2068 } 2069 2070 @Override 2071 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 2072 return mProvider.getViewDelegate().requestFocus(direction, previouslyFocusedRect); 2073 } 2074 2075 @Deprecated 2076 @Override 2077 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 2078 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 2079 mProvider.getViewDelegate().onMeasure(widthMeasureSpec, heightMeasureSpec); 2080 } 2081 2082 @Override 2083 public boolean requestChildRectangleOnScreen(View child, Rect rect, boolean immediate) { 2084 return mProvider.getViewDelegate().requestChildRectangleOnScreen(child, rect, immediate); 2085 } 2086 2087 @Override 2088 public void setBackgroundColor(int color) { 2089 mProvider.getViewDelegate().setBackgroundColor(color); 2090 } 2091 2092 @Override 2093 public void setLayerType(int layerType, Paint paint) { 2094 super.setLayerType(layerType, paint); 2095 mProvider.getViewDelegate().setLayerType(layerType, paint); 2096 } 2097 2098 @Override 2099 protected void dispatchDraw(Canvas canvas) { 2100 mProvider.getViewDelegate().preDispatchDraw(canvas); 2101 super.dispatchDraw(canvas); 2102 } 2103} 2104