WebView.java revision ffb81c4a779431d686a734f14cc5b81ac84a7fdd
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.NonNull; 20import android.annotation.SystemApi; 21import android.annotation.Widget; 22import android.content.Context; 23import android.content.Intent; 24import android.content.res.Configuration; 25import android.graphics.Bitmap; 26import android.graphics.Canvas; 27import android.graphics.Paint; 28import android.graphics.Picture; 29import android.graphics.Rect; 30import android.graphics.drawable.Drawable; 31import android.net.http.SslCertificate; 32import android.net.Uri; 33import android.os.Build; 34import android.os.Bundle; 35import android.os.Handler; 36import android.os.Looper; 37import android.os.Message; 38import android.os.StrictMode; 39import android.print.PrintDocumentAdapter; 40import android.security.KeyChain; 41import android.util.AttributeSet; 42import android.util.Log; 43import android.view.DragEvent; 44import android.view.KeyEvent; 45import android.view.MotionEvent; 46import android.view.View; 47import android.view.ViewStructure; 48import android.view.ViewDebug; 49import android.view.ViewGroup; 50import android.view.ViewHierarchyEncoder; 51import android.view.ViewTreeObserver; 52import android.view.accessibility.AccessibilityEvent; 53import android.view.accessibility.AccessibilityNodeInfo; 54import android.view.accessibility.AccessibilityNodeProvider; 55import android.view.inputmethod.EditorInfo; 56import android.view.inputmethod.InputConnection; 57import android.widget.AbsoluteLayout; 58 59import java.io.BufferedWriter; 60import java.io.File; 61import java.util.Map; 62 63/** 64 * <p>A View that displays web pages. This class is the basis upon which you 65 * can roll your own web browser or simply display some online content within your Activity. 66 * It uses the WebKit rendering engine to display 67 * web pages and includes methods to navigate forward and backward 68 * through a history, zoom in and out, perform text searches and more.</p> 69 * <p>Note that, in order for your Activity to access the Internet and load web pages 70 * in a WebView, you must add the {@code INTERNET} permissions to your 71 * Android Manifest file:</p> 72 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 73 * 74 * <p>This must be a child of the <a 75 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 76 * element.</p> 77 * 78 * <p>For more information, read 79 * <a href="{@docRoot}guide/webapps/webview.html">Building Web Apps in WebView</a>.</p> 80 * 81 * <h3>Basic usage</h3> 82 * 83 * <p>By default, a WebView provides no browser-like widgets, does not 84 * enable JavaScript and web page errors are ignored. If your goal is only 85 * to display some HTML as a part of your UI, this is probably fine; 86 * the user won't need to interact with the web page beyond reading 87 * it, and the web page won't need to interact with the user. If you 88 * actually want a full-blown web browser, then you probably want to 89 * invoke the Browser application with a URL Intent rather than show it 90 * with a WebView. For example: 91 * <pre> 92 * Uri uri = Uri.parse("http://www.example.com"); 93 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 94 * startActivity(intent); 95 * </pre> 96 * <p>See {@link android.content.Intent} for more information.</p> 97 * 98 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 99 * or set the entire Activity window as a WebView during {@link 100 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 101 * <pre class="prettyprint"> 102 * WebView webview = new WebView(this); 103 * setContentView(webview); 104 * </pre> 105 * 106 * <p>Then load the desired web page:</p> 107 * <pre> 108 * // Simplest usage: note that an exception will NOT be thrown 109 * // if there is an error loading this page (see below). 110 * webview.loadUrl("http://slashdot.org/"); 111 * 112 * // OR, you can also load from an HTML string: 113 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 114 * webview.loadData(summary, "text/html", null); 115 * // ... although note that there are restrictions on what this HTML can do. 116 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 117 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 118 * </pre> 119 * 120 * <p>A WebView has several customization points where you can add your 121 * own behavior. These are:</p> 122 * 123 * <ul> 124 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 125 * This class is called when something that might impact a 126 * browser UI happens, for instance, progress updates and 127 * JavaScript alerts are sent here (see <a 128 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 129 * </li> 130 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 131 * It will be called when things happen that impact the 132 * rendering of the content, eg, errors or form submissions. You 133 * can also intercept URL loading here (via {@link 134 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 135 * shouldOverrideUrlLoading()}).</li> 136 * <li>Modifying the {@link android.webkit.WebSettings}, such as 137 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 138 * setJavaScriptEnabled()}. </li> 139 * <li>Injecting Java objects into the WebView using the 140 * {@link android.webkit.WebView#addJavascriptInterface} method. This 141 * method allows you to inject Java objects into a page's JavaScript 142 * context, so that they can be accessed by JavaScript in the page.</li> 143 * </ul> 144 * 145 * <p>Here's a more complicated example, showing error handling, 146 * settings, and progress notification:</p> 147 * 148 * <pre class="prettyprint"> 149 * // Let's display the progress in the activity title bar, like the 150 * // browser app does. 151 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 152 * 153 * webview.getSettings().setJavaScriptEnabled(true); 154 * 155 * final Activity activity = this; 156 * webview.setWebChromeClient(new WebChromeClient() { 157 * public void onProgressChanged(WebView view, int progress) { 158 * // Activities and WebViews measure progress with different scales. 159 * // The progress meter will automatically disappear when we reach 100% 160 * activity.setProgress(progress * 1000); 161 * } 162 * }); 163 * webview.setWebViewClient(new WebViewClient() { 164 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 165 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 166 * } 167 * }); 168 * 169 * webview.loadUrl("http://developer.android.com/"); 170 * </pre> 171 * 172 * <h3>Zoom</h3> 173 * 174 * <p>To enable the built-in zoom, set 175 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 176 * (introduced in API level {@link android.os.Build.VERSION_CODES#CUPCAKE}).</p> 177 * <p>NOTE: Using zoom if either the height or width is set to 178 * {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} may lead to undefined behavior 179 * and should be avoided.</p> 180 * 181 * <h3>Cookie and window management</h3> 182 * 183 * <p>For obvious security reasons, your application has its own 184 * cache, cookie store etc.—it does not share the Browser 185 * application's data. 186 * </p> 187 * 188 * <p>By default, requests by the HTML to open new windows are 189 * ignored. This is true whether they be opened by JavaScript or by 190 * the target attribute on a link. You can customize your 191 * {@link WebChromeClient} to provide your own behavior for opening multiple windows, 192 * and render them in whatever manner you want.</p> 193 * 194 * <p>The standard behavior for an Activity is to be destroyed and 195 * recreated when the device orientation or any other configuration changes. This will cause 196 * the WebView to reload the current page. If you don't want that, you 197 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 198 * changes, and then just leave the WebView alone. It'll automatically 199 * re-orient itself as appropriate. Read <a 200 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 201 * more information about how to handle configuration changes during runtime.</p> 202 * 203 * 204 * <h3>Building web pages to support different screen densities</h3> 205 * 206 * <p>The screen density of a device is based on the screen resolution. A screen with low density 207 * has fewer available pixels per inch, where a screen with high density 208 * has more — sometimes significantly more — pixels per inch. The density of a 209 * screen is important because, other things being equal, a UI element (such as a button) whose 210 * height and width are defined in terms of screen pixels will appear larger on the lower density 211 * screen and smaller on the higher density screen. 212 * For simplicity, Android collapses all actual screen densities into three generalized densities: 213 * high, medium, and low.</p> 214 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 215 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 216 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 217 * are bigger). 218 * Starting with API level {@link android.os.Build.VERSION_CODES#ECLAIR}, WebView supports DOM, CSS, 219 * and meta tag features to help you (as a web developer) target screens with different screen 220 * densities.</p> 221 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 222 * <ul> 223 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 224 * default scaling factor used for the current device. For example, if the value of {@code 225 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 226 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 227 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 228 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 229 * scaled 0.75x.</li> 230 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 231 * densities for which this style sheet is to be used. The corresponding value should be either 232 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 233 * density, or high density screens, respectively. For example: 234 * <pre> 235 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 236 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 237 * which is the high density pixel ratio.</p> 238 * </li> 239 * </ul> 240 * 241 * <h3>HTML5 Video support</h3> 242 * 243 * <p>In order to support inline HTML5 video in your application you need to have hardware 244 * acceleration turned on. 245 * </p> 246 * 247 * <h3>Full screen support</h3> 248 * 249 * <p>In order to support full screen — for video or other HTML content — you need to set a 250 * {@link android.webkit.WebChromeClient} and implement both 251 * {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 252 * and {@link WebChromeClient#onHideCustomView()}. If the implementation of either of these two methods is 253 * missing then the web contents will not be allowed to enter full screen. Optionally you can implement 254 * {@link WebChromeClient#getVideoLoadingProgressView()} to customize the View displayed whilst a video 255 * is loading. 256 * </p> 257 * 258 * <h3>HTML5 Geolocation API support</h3> 259 * 260 * <p>For applications targeting Android N and later releases 261 * (API level > {@link android.os.Build.VERSION_CODES#M}) the geolocation api is only supported on 262 * secure origins such as https. For such applications requests to geolocation api on non-secure 263 * origins are automatically denied without invoking the corresponding 264 * {@link WebChromeClient#onGeolocationPermissionsShowPrompt(String, GeolocationPermissions.Callback)} 265 * method. 266 * </p> 267 * 268 * <h3>Layout size</h3> 269 * <p> 270 * It is recommended to set the WebView layout height to a fixed value or to 271 * {@link android.view.ViewGroup.LayoutParams#MATCH_PARENT} instead of using 272 * {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT}. 273 * When using {@link android.view.ViewGroup.LayoutParams#MATCH_PARENT} 274 * for the height none of the WebView's parents should use a 275 * {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} layout height since that could result in 276 * incorrect sizing of the views. 277 * </p> 278 * 279 * <p>Setting the WebView's height to {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} 280 * enables the following behaviors: 281 * <ul> 282 * <li>The HTML body layout height is set to a fixed value. This means that elements with a height 283 * relative to the HTML body may not be sized correctly. </li> 284 * <li>For applications targeting {@link android.os.Build.VERSION_CODES#KITKAT} and earlier SDKs the 285 * HTML viewport meta tag will be ignored in order to preserve backwards compatibility. </li> 286 * </ul> 287 * </p> 288 * 289 * <p> 290 * Using a layout width of {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} is not 291 * supported. If such a width is used the WebView will attempt to use the width of the parent 292 * instead. 293 * </p> 294 * 295 * <h3>Metrics</h3> 296 * 297 * <p> 298 * WebView may upload anonymous diagnostic data to Google when the user has consented. This data 299 * helps Google improve WebView. Data is collected on a per-app basis for each app which has 300 * instantiated a WebView. An individual app can opt out of this feature by putting the following 301 * tag in its manifest: 302 * <pre> 303 * <meta-data android:name="android.webkit.WebView.MetricsOptOut" 304 * android:value="true" /> 305 * </pre> 306 * </p> 307 * <p> 308 * Data will only be uploaded for a given app if the user has consented AND the app has not opted 309 * out. 310 * </p> 311 * 312 */ 313// Implementation notes. 314// The WebView is a thin API class that delegates its public API to a backend WebViewProvider 315// class instance. WebView extends {@link AbsoluteLayout} for backward compatibility reasons. 316// Methods are delegated to the provider implementation: all public API methods introduced in this 317// file are fully delegated, whereas public and protected methods from the View base classes are 318// only delegated where a specific need exists for them to do so. 319@Widget 320public class WebView extends AbsoluteLayout 321 implements ViewTreeObserver.OnGlobalFocusChangeListener, 322 ViewGroup.OnHierarchyChangeListener, ViewDebug.HierarchyHandler { 323 324 /** 325 * Broadcast Action: Indicates the data reduction proxy setting changed. 326 * Sent by the settings app when user changes the data reduction proxy value. This intent will 327 * always stay as a hidden API. 328 * @hide 329 */ 330 @SystemApi 331 public static final String DATA_REDUCTION_PROXY_SETTING_CHANGED = 332 "android.webkit.DATA_REDUCTION_PROXY_SETTING_CHANGED"; 333 334 private static final String LOGTAG = "WebView"; 335 336 // Throwing an exception for incorrect thread usage if the 337 // build target is JB MR2 or newer. Defaults to false, and is 338 // set in the WebView constructor. 339 private static volatile boolean sEnforceThreadChecking = false; 340 341 /** 342 * Transportation object for returning WebView across thread boundaries. 343 */ 344 public class WebViewTransport { 345 private WebView mWebview; 346 347 /** 348 * Sets the WebView to the transportation object. 349 * 350 * @param webview the WebView to transport 351 */ 352 public synchronized void setWebView(WebView webview) { 353 mWebview = webview; 354 } 355 356 /** 357 * Gets the WebView object. 358 * 359 * @return the transported WebView object 360 */ 361 public synchronized WebView getWebView() { 362 return mWebview; 363 } 364 } 365 366 /** 367 * URI scheme for telephone number. 368 */ 369 public static final String SCHEME_TEL = "tel:"; 370 /** 371 * URI scheme for email address. 372 */ 373 public static final String SCHEME_MAILTO = "mailto:"; 374 /** 375 * URI scheme for map address. 376 */ 377 public static final String SCHEME_GEO = "geo:0,0?q="; 378 379 /** 380 * Interface to listen for find results. 381 */ 382 public interface FindListener { 383 /** 384 * Notifies the listener about progress made by a find operation. 385 * 386 * @param activeMatchOrdinal the zero-based ordinal of the currently selected match 387 * @param numberOfMatches how many matches have been found 388 * @param isDoneCounting whether the find operation has actually completed. The listener 389 * may be notified multiple times while the 390 * operation is underway, and the numberOfMatches 391 * value should not be considered final unless 392 * isDoneCounting is true. 393 */ 394 public void onFindResultReceived(int activeMatchOrdinal, int numberOfMatches, 395 boolean isDoneCounting); 396 } 397 398 /** 399 * Callback interface supplied to {@link #postVisualStateCallback} for receiving 400 * notifications about the visual state. 401 */ 402 public static abstract class VisualStateCallback { 403 /** 404 * Invoked when the visual state is ready to be drawn in the next {@link #onDraw}. 405 * 406 * @param requestId The identifier passed to {@link #postVisualStateCallback} when this 407 * callback was posted. 408 */ 409 public abstract void onComplete(long requestId); 410 } 411 412 /** 413 * Interface to listen for new pictures as they change. 414 * 415 * @deprecated This interface is now obsolete. 416 */ 417 @Deprecated 418 public interface PictureListener { 419 /** 420 * Used to provide notification that the WebView's picture has changed. 421 * See {@link WebView#capturePicture} for details of the picture. 422 * 423 * @param view the WebView that owns the picture 424 * @param picture the new picture. Applications targeting 425 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2} or above 426 * will always receive a null Picture. 427 * @deprecated Deprecated due to internal changes. 428 */ 429 @Deprecated 430 public void onNewPicture(WebView view, Picture picture); 431 } 432 433 public static class HitTestResult { 434 /** 435 * Default HitTestResult, where the target is unknown. 436 */ 437 public static final int UNKNOWN_TYPE = 0; 438 /** 439 * @deprecated This type is no longer used. 440 */ 441 @Deprecated 442 public static final int ANCHOR_TYPE = 1; 443 /** 444 * HitTestResult for hitting a phone number. 445 */ 446 public static final int PHONE_TYPE = 2; 447 /** 448 * HitTestResult for hitting a map address. 449 */ 450 public static final int GEO_TYPE = 3; 451 /** 452 * HitTestResult for hitting an email address. 453 */ 454 public static final int EMAIL_TYPE = 4; 455 /** 456 * HitTestResult for hitting an HTML::img tag. 457 */ 458 public static final int IMAGE_TYPE = 5; 459 /** 460 * @deprecated This type is no longer used. 461 */ 462 @Deprecated 463 public static final int IMAGE_ANCHOR_TYPE = 6; 464 /** 465 * HitTestResult for hitting a HTML::a tag with src=http. 466 */ 467 public static final int SRC_ANCHOR_TYPE = 7; 468 /** 469 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img. 470 */ 471 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 472 /** 473 * HitTestResult for hitting an edit text area. 474 */ 475 public static final int EDIT_TEXT_TYPE = 9; 476 477 private int mType; 478 private String mExtra; 479 480 /** 481 * @hide Only for use by WebViewProvider implementations 482 */ 483 @SystemApi 484 public HitTestResult() { 485 mType = UNKNOWN_TYPE; 486 } 487 488 /** 489 * @hide Only for use by WebViewProvider implementations 490 */ 491 @SystemApi 492 public void setType(int type) { 493 mType = type; 494 } 495 496 /** 497 * @hide Only for use by WebViewProvider implementations 498 */ 499 @SystemApi 500 public void setExtra(String extra) { 501 mExtra = extra; 502 } 503 504 /** 505 * Gets the type of the hit test result. See the XXX_TYPE constants 506 * defined in this class. 507 * 508 * @return the type of the hit test result 509 */ 510 public int getType() { 511 return mType; 512 } 513 514 /** 515 * Gets additional type-dependant information about the result. See 516 * {@link WebView#getHitTestResult()} for details. May either be null 517 * or contain extra information about this result. 518 * 519 * @return additional type-dependant information about the result 520 */ 521 public String getExtra() { 522 return mExtra; 523 } 524 } 525 526 /** 527 * Constructs a new WebView with a Context object. 528 * 529 * @param context a Context object used to access application assets 530 */ 531 public WebView(Context context) { 532 this(context, null); 533 } 534 535 /** 536 * Constructs a new WebView with layout parameters. 537 * 538 * @param context a Context object used to access application assets 539 * @param attrs an AttributeSet passed to our parent 540 */ 541 public WebView(Context context, AttributeSet attrs) { 542 this(context, attrs, com.android.internal.R.attr.webViewStyle); 543 } 544 545 /** 546 * Constructs a new WebView with layout parameters and a default style. 547 * 548 * @param context a Context object used to access application assets 549 * @param attrs an AttributeSet passed to our parent 550 * @param defStyleAttr an attribute in the current theme that contains a 551 * reference to a style resource that supplies default values for 552 * the view. Can be 0 to not look for defaults. 553 */ 554 public WebView(Context context, AttributeSet attrs, int defStyleAttr) { 555 this(context, attrs, defStyleAttr, 0); 556 } 557 558 /** 559 * Constructs a new WebView with layout parameters and a default style. 560 * 561 * @param context a Context object used to access application assets 562 * @param attrs an AttributeSet passed to our parent 563 * @param defStyleAttr an attribute in the current theme that contains a 564 * reference to a style resource that supplies default values for 565 * the view. Can be 0 to not look for defaults. 566 * @param defStyleRes a resource identifier of a style resource that 567 * supplies default values for the view, used only if 568 * defStyleAttr is 0 or can not be found in the theme. Can be 0 569 * to not look for defaults. 570 */ 571 public WebView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 572 this(context, attrs, defStyleAttr, defStyleRes, null, false); 573 } 574 575 /** 576 * Constructs a new WebView with layout parameters and a default style. 577 * 578 * @param context a Context object used to access application assets 579 * @param attrs an AttributeSet passed to our parent 580 * @param defStyleAttr an attribute in the current theme that contains a 581 * reference to a style resource that supplies default values for 582 * the view. Can be 0 to not look for defaults. 583 * @param privateBrowsing whether this WebView will be initialized in 584 * private mode 585 * 586 * @deprecated Private browsing is no longer supported directly via 587 * WebView and will be removed in a future release. Prefer using 588 * {@link WebSettings}, {@link WebViewDatabase}, {@link CookieManager} 589 * and {@link WebStorage} for fine-grained control of privacy data. 590 */ 591 @Deprecated 592 public WebView(Context context, AttributeSet attrs, int defStyleAttr, 593 boolean privateBrowsing) { 594 this(context, attrs, defStyleAttr, 0, null, privateBrowsing); 595 } 596 597 /** 598 * Constructs a new WebView with layout parameters, a default style and a set 599 * of custom JavaScript interfaces to be added to this WebView at initialization 600 * time. This guarantees that these interfaces will be available when the JS 601 * context is initialized. 602 * 603 * @param context a Context object used to access application assets 604 * @param attrs an AttributeSet passed to our parent 605 * @param defStyleAttr an attribute in the current theme that contains a 606 * reference to a style resource that supplies default values for 607 * the view. Can be 0 to not look for defaults. 608 * @param javaScriptInterfaces a Map of interface names, as keys, and 609 * object implementing those interfaces, as 610 * values 611 * @param privateBrowsing whether this WebView will be initialized in 612 * private mode 613 * @hide This is used internally by dumprendertree, as it requires the JavaScript interfaces to 614 * be added synchronously, before a subsequent loadUrl call takes effect. 615 */ 616 protected WebView(Context context, AttributeSet attrs, int defStyleAttr, 617 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 618 this(context, attrs, defStyleAttr, 0, javaScriptInterfaces, privateBrowsing); 619 } 620 621 /** 622 * @hide 623 */ 624 @SuppressWarnings("deprecation") // for super() call into deprecated base class constructor. 625 protected WebView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes, 626 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 627 super(context, attrs, defStyleAttr, defStyleRes); 628 if (context == null) { 629 throw new IllegalArgumentException("Invalid context argument"); 630 } 631 sEnforceThreadChecking = context.getApplicationInfo().targetSdkVersion >= 632 Build.VERSION_CODES.JELLY_BEAN_MR2; 633 checkThread(); 634 635 ensureProviderCreated(); 636 mProvider.init(javaScriptInterfaces, privateBrowsing); 637 // Post condition of creating a webview is the CookieSyncManager.getInstance() is allowed. 638 CookieSyncManager.setGetInstanceIsAllowed(); 639 } 640 641 /** 642 * Specifies whether the horizontal scrollbar has overlay style. 643 * 644 * @deprecated This method has no effect. 645 * @param overlay true if horizontal scrollbar should have overlay style 646 */ 647 @Deprecated 648 public void setHorizontalScrollbarOverlay(boolean overlay) { 649 } 650 651 /** 652 * Specifies whether the vertical scrollbar has overlay style. 653 * 654 * @deprecated This method has no effect. 655 * @param overlay true if vertical scrollbar should have overlay style 656 */ 657 @Deprecated 658 public void setVerticalScrollbarOverlay(boolean overlay) { 659 } 660 661 /** 662 * Gets whether horizontal scrollbar has overlay style. 663 * 664 * @deprecated This method is now obsolete. 665 * @return true 666 */ 667 @Deprecated 668 public boolean overlayHorizontalScrollbar() { 669 // The old implementation defaulted to true, so return true for consistency 670 return true; 671 } 672 673 /** 674 * Gets whether vertical scrollbar has overlay style. 675 * 676 * @deprecated This method is now obsolete. 677 * @return false 678 */ 679 @Deprecated 680 public boolean overlayVerticalScrollbar() { 681 // The old implementation defaulted to false, so return false for consistency 682 return false; 683 } 684 685 /** 686 * Gets the visible height (in pixels) of the embedded title bar (if any). 687 * 688 * @deprecated This method is now obsolete. 689 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 690 */ 691 @Deprecated 692 public int getVisibleTitleHeight() { 693 checkThread(); 694 return mProvider.getVisibleTitleHeight(); 695 } 696 697 /** 698 * Gets the SSL certificate for the main top-level page or null if there is 699 * no certificate (the site is not secure). 700 * 701 * @return the SSL certificate for the main top-level page 702 */ 703 public SslCertificate getCertificate() { 704 checkThread(); 705 return mProvider.getCertificate(); 706 } 707 708 /** 709 * Sets the SSL certificate for the main top-level page. 710 * 711 * @deprecated Calling this function has no useful effect, and will be 712 * ignored in future releases. 713 */ 714 @Deprecated 715 public void setCertificate(SslCertificate certificate) { 716 checkThread(); 717 mProvider.setCertificate(certificate); 718 } 719 720 //------------------------------------------------------------------------- 721 // Methods called by activity 722 //------------------------------------------------------------------------- 723 724 /** 725 * Sets a username and password pair for the specified host. This data is 726 * used by the WebView to autocomplete username and password fields in web 727 * forms. Note that this is unrelated to the credentials used for HTTP 728 * authentication. 729 * 730 * @param host the host that required the credentials 731 * @param username the username for the given host 732 * @param password the password for the given host 733 * @see WebViewDatabase#clearUsernamePassword 734 * @see WebViewDatabase#hasUsernamePassword 735 * @deprecated Saving passwords in WebView will not be supported in future versions. 736 */ 737 @Deprecated 738 public void savePassword(String host, String username, String password) { 739 checkThread(); 740 mProvider.savePassword(host, username, password); 741 } 742 743 /** 744 * Stores HTTP authentication credentials for a given host and realm to the {@link WebViewDatabase} 745 * instance. 746 * <p> 747 * To use HTTP authentication, the embedder application has to implement 748 * {@link WebViewClient#onReceivedHttpAuthRequest}, and call {@link HttpAuthHandler#proceed} 749 * with the correct username and password. 750 * <p> 751 * The embedder app can get the username and password any way it chooses, and does not have to 752 * use {@link WebViewDatabase}. 753 * <p> 754 * Notes: 755 * <li> 756 * {@link WebViewDatabase} is provided only as a convenience to store and retrieve http 757 * authentication credentials. WebView does not read from it during HTTP authentication. 758 * </li> 759 * <li> 760 * WebView does not provide a special mechanism to clear HTTP authentication credentials for 761 * implementing client logout. The client logout mechanism should be implemented by the Web site 762 * designer (such as server sending a HTTP 401 for invalidating credentials). 763 * </li> 764 * 765 * @param host the host to which the credentials apply 766 * @param realm the realm to which the credentials apply 767 * @param username the username 768 * @param password the password 769 * @see #getHttpAuthUsernamePassword 770 * @see WebViewDatabase#hasHttpAuthUsernamePassword 771 * @see WebViewDatabase#clearHttpAuthUsernamePassword 772 */ 773 public void setHttpAuthUsernamePassword(String host, String realm, 774 String username, String password) { 775 checkThread(); 776 mProvider.setHttpAuthUsernamePassword(host, realm, username, password); 777 } 778 779 /** 780 * Retrieves HTTP authentication credentials for a given host and realm from the {@link 781 * WebViewDatabase} instance. 782 * 783 * @param host the host to which the credentials apply 784 * @param realm the realm to which the credentials apply 785 * @return the credentials as a String array, if found. The first element 786 * is the username and the second element is the password. Null if 787 * no credentials are found. 788 * @see #setHttpAuthUsernamePassword 789 * @see WebViewDatabase#hasHttpAuthUsernamePassword 790 * @see WebViewDatabase#clearHttpAuthUsernamePassword 791 */ 792 public String[] getHttpAuthUsernamePassword(String host, String realm) { 793 checkThread(); 794 return mProvider.getHttpAuthUsernamePassword(host, realm); 795 } 796 797 /** 798 * Destroys the internal state of this WebView. This method should be called 799 * after this WebView has been removed from the view system. No other 800 * methods may be called on this WebView after destroy. 801 */ 802 public void destroy() { 803 checkThread(); 804 mProvider.destroy(); 805 } 806 807 /** 808 * Enables platform notifications of data state and proxy changes. 809 * Notifications are enabled by default. 810 * 811 * @deprecated This method is now obsolete. 812 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 813 */ 814 @Deprecated 815 public static void enablePlatformNotifications() { 816 // noop 817 } 818 819 /** 820 * Disables platform notifications of data state and proxy changes. 821 * Notifications are enabled by default. 822 * 823 * @deprecated This method is now obsolete. 824 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 825 */ 826 @Deprecated 827 public static void disablePlatformNotifications() { 828 // noop 829 } 830 831 /** 832 * Used only by internal tests to free up memory. 833 * 834 * @hide 835 */ 836 public static void freeMemoryForTests() { 837 getFactory().getStatics().freeMemoryForTests(); 838 } 839 840 /** 841 * Informs WebView of the network state. This is used to set 842 * the JavaScript property window.navigator.isOnline and 843 * generates the online/offline event as specified in HTML5, sec. 5.7.7 844 * 845 * @param networkUp a boolean indicating if network is available 846 */ 847 public void setNetworkAvailable(boolean networkUp) { 848 checkThread(); 849 mProvider.setNetworkAvailable(networkUp); 850 } 851 852 /** 853 * Saves the state of this WebView used in 854 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 855 * method no longer stores the display data for this WebView. The previous 856 * behavior could potentially leak files if {@link #restoreState} was never 857 * called. 858 * 859 * @param outState the Bundle to store this WebView's state 860 * @return the same copy of the back/forward list used to save the state. If 861 * saveState fails, the returned list will be null. 862 */ 863 public WebBackForwardList saveState(Bundle outState) { 864 checkThread(); 865 return mProvider.saveState(outState); 866 } 867 868 /** 869 * Saves the current display data to the Bundle given. Used in conjunction 870 * with {@link #saveState}. 871 * @param b a Bundle to store the display data 872 * @param dest the file to store the serialized picture data. Will be 873 * overwritten with this WebView's picture data. 874 * @return true if the picture was successfully saved 875 * @deprecated This method is now obsolete. 876 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 877 */ 878 @Deprecated 879 public boolean savePicture(Bundle b, final File dest) { 880 checkThread(); 881 return mProvider.savePicture(b, dest); 882 } 883 884 /** 885 * Restores the display data that was saved in {@link #savePicture}. Used in 886 * conjunction with {@link #restoreState}. Note that this will not work if 887 * this WebView is hardware accelerated. 888 * 889 * @param b a Bundle containing the saved display data 890 * @param src the file where the picture data was stored 891 * @return true if the picture was successfully restored 892 * @deprecated This method is now obsolete. 893 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 894 */ 895 @Deprecated 896 public boolean restorePicture(Bundle b, File src) { 897 checkThread(); 898 return mProvider.restorePicture(b, src); 899 } 900 901 /** 902 * Restores the state of this WebView from the given Bundle. This method is 903 * intended for use in {@link android.app.Activity#onRestoreInstanceState} 904 * and should be called to restore the state of this WebView. If 905 * it is called after this WebView has had a chance to build state (load 906 * pages, create a back/forward list, etc.) there may be undesirable 907 * side-effects. Please note that this method no longer restores the 908 * display data for this WebView. 909 * 910 * @param inState the incoming Bundle of state 911 * @return the restored back/forward list or null if restoreState failed 912 */ 913 public WebBackForwardList restoreState(Bundle inState) { 914 checkThread(); 915 return mProvider.restoreState(inState); 916 } 917 918 /** 919 * Loads the given URL with the specified additional HTTP headers. 920 * <p> 921 * Also see compatibility note on {@link #evaluateJavascript}. 922 * 923 * @param url the URL of the resource to load 924 * @param additionalHttpHeaders the additional headers to be used in the 925 * HTTP request for this URL, specified as a map from name to 926 * value. Note that if this map contains any of the headers 927 * that are set by default by this WebView, such as those 928 * controlling caching, accept types or the User-Agent, their 929 * values may be overridden by this WebView's defaults. 930 */ 931 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 932 checkThread(); 933 mProvider.loadUrl(url, additionalHttpHeaders); 934 } 935 936 /** 937 * Loads the given URL. 938 * <p> 939 * Also see compatibility note on {@link #evaluateJavascript}. 940 * 941 * @param url the URL of the resource to load 942 */ 943 public void loadUrl(String url) { 944 checkThread(); 945 mProvider.loadUrl(url); 946 } 947 948 /** 949 * Loads the URL with postData using "POST" method into this WebView. If url 950 * is not a network URL, it will be loaded with {@link #loadUrl(String)} 951 * instead, ignoring the postData param. 952 * 953 * @param url the URL of the resource to load 954 * @param postData the data will be passed to "POST" request, which must be 955 * be "application/x-www-form-urlencoded" encoded. 956 */ 957 public void postUrl(String url, byte[] postData) { 958 checkThread(); 959 if (URLUtil.isNetworkUrl(url)) { 960 mProvider.postUrl(url, postData); 961 } else { 962 mProvider.loadUrl(url); 963 } 964 } 965 966 /** 967 * Loads the given data into this WebView using a 'data' scheme URL. 968 * <p> 969 * Note that JavaScript's same origin policy means that script running in a 970 * page loaded using this method will be unable to access content loaded 971 * using any scheme other than 'data', including 'http(s)'. To avoid this 972 * restriction, use {@link 973 * #loadDataWithBaseURL(String,String,String,String,String) 974 * loadDataWithBaseURL()} with an appropriate base URL. 975 * <p> 976 * The encoding parameter specifies whether the data is base64 or URL 977 * encoded. If the data is base64 encoded, the value of the encoding 978 * parameter must be 'base64'. For all other values of the parameter, 979 * including null, it is assumed that the data uses ASCII encoding for 980 * octets inside the range of safe URL characters and use the standard %xx 981 * hex encoding of URLs for octets outside that range. For example, '#', 982 * '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 983 * <p> 984 * The 'data' scheme URL formed by this method uses the default US-ASCII 985 * charset. If you need need to set a different charset, you should form a 986 * 'data' scheme URL which explicitly specifies a charset parameter in the 987 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 988 * Note that the charset obtained from the mediatype portion of a data URL 989 * always overrides that specified in the HTML or XML document itself. 990 * 991 * @param data a String of data in the given encoding 992 * @param mimeType the MIME type of the data, e.g. 'text/html' 993 * @param encoding the encoding of the data 994 */ 995 public void loadData(String data, String mimeType, String encoding) { 996 checkThread(); 997 mProvider.loadData(data, mimeType, encoding); 998 } 999 1000 /** 1001 * Loads the given data into this WebView, using baseUrl as the base URL for 1002 * the content. The base URL is used both to resolve relative URLs and when 1003 * applying JavaScript's same origin policy. The historyUrl is used for the 1004 * history entry. 1005 * <p> 1006 * Note that content specified in this way can access local device files 1007 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 1008 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 1009 * <p> 1010 * If the base URL uses the data scheme, this method is equivalent to 1011 * calling {@link #loadData(String,String,String) loadData()} and the 1012 * historyUrl is ignored, and the data will be treated as part of a data: URL. 1013 * If the base URL uses any other scheme, then the data will be loaded into 1014 * the WebView as a plain string (i.e. not part of a data URL) and any URL-encoded 1015 * entities in the string will not be decoded. 1016 * <p> 1017 * Note that the baseUrl is sent in the 'Referer' HTTP header when 1018 * requesting subresources (images, etc.) of the page loaded using this method. 1019 * 1020 * @param baseUrl the URL to use as the page's base URL. If null defaults to 1021 * 'about:blank'. 1022 * @param data a String of data in the given encoding 1023 * @param mimeType the MIMEType of the data, e.g. 'text/html'. If null, 1024 * defaults to 'text/html'. 1025 * @param encoding the encoding of the data 1026 * @param historyUrl the URL to use as the history entry. If null defaults 1027 * to 'about:blank'. If non-null, this must be a valid URL. 1028 */ 1029 public void loadDataWithBaseURL(String baseUrl, String data, 1030 String mimeType, String encoding, String historyUrl) { 1031 checkThread(); 1032 mProvider.loadDataWithBaseURL(baseUrl, data, mimeType, encoding, historyUrl); 1033 } 1034 1035 /** 1036 * Asynchronously evaluates JavaScript in the context of the currently displayed page. 1037 * If non-null, |resultCallback| will be invoked with any result returned from that 1038 * execution. This method must be called on the UI thread and the callback will 1039 * be made on the UI thread. 1040 * <p> 1041 * Compatibility note. Applications targeting {@link android.os.Build.VERSION_CODES#N} or 1042 * later, JavaScript state from an empty WebView is no longer persisted across navigations like 1043 * {@link #loadUrl(String)}. For example, global variables and functions defined before calling 1044 * {@link #loadUrl(String)} will not exist in the loaded page. Applications should use 1045 * {@link #addJavascriptInterface} instead to persist JavaScript objects across navigations. 1046 * 1047 * @param script the JavaScript to execute. 1048 * @param resultCallback A callback to be invoked when the script execution 1049 * completes with the result of the execution (if any). 1050 * May be null if no notification of the result is required. 1051 */ 1052 public void evaluateJavascript(String script, ValueCallback<String> resultCallback) { 1053 checkThread(); 1054 mProvider.evaluateJavaScript(script, resultCallback); 1055 } 1056 1057 /** 1058 * Saves the current view as a web archive. 1059 * 1060 * @param filename the filename where the archive should be placed 1061 */ 1062 public void saveWebArchive(String filename) { 1063 checkThread(); 1064 mProvider.saveWebArchive(filename); 1065 } 1066 1067 /** 1068 * Saves the current view as a web archive. 1069 * 1070 * @param basename the filename where the archive should be placed 1071 * @param autoname if false, takes basename to be a file. If true, basename 1072 * is assumed to be a directory in which a filename will be 1073 * chosen according to the URL of the current page. 1074 * @param callback called after the web archive has been saved. The 1075 * parameter for onReceiveValue will either be the filename 1076 * under which the file was saved, or null if saving the 1077 * file failed. 1078 */ 1079 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 1080 checkThread(); 1081 mProvider.saveWebArchive(basename, autoname, callback); 1082 } 1083 1084 /** 1085 * Stops the current load. 1086 */ 1087 public void stopLoading() { 1088 checkThread(); 1089 mProvider.stopLoading(); 1090 } 1091 1092 /** 1093 * Reloads the current URL. 1094 */ 1095 public void reload() { 1096 checkThread(); 1097 mProvider.reload(); 1098 } 1099 1100 /** 1101 * Gets whether this WebView has a back history item. 1102 * 1103 * @return true iff this WebView has a back history item 1104 */ 1105 public boolean canGoBack() { 1106 checkThread(); 1107 return mProvider.canGoBack(); 1108 } 1109 1110 /** 1111 * Goes back in the history of this WebView. 1112 */ 1113 public void goBack() { 1114 checkThread(); 1115 mProvider.goBack(); 1116 } 1117 1118 /** 1119 * Gets whether this WebView has a forward history item. 1120 * 1121 * @return true iff this WebView has a forward history item 1122 */ 1123 public boolean canGoForward() { 1124 checkThread(); 1125 return mProvider.canGoForward(); 1126 } 1127 1128 /** 1129 * Goes forward in the history of this WebView. 1130 */ 1131 public void goForward() { 1132 checkThread(); 1133 mProvider.goForward(); 1134 } 1135 1136 /** 1137 * Gets whether the page can go back or forward the given 1138 * number of steps. 1139 * 1140 * @param steps the negative or positive number of steps to move the 1141 * history 1142 */ 1143 public boolean canGoBackOrForward(int steps) { 1144 checkThread(); 1145 return mProvider.canGoBackOrForward(steps); 1146 } 1147 1148 /** 1149 * Goes to the history item that is the number of steps away from 1150 * the current item. Steps is negative if backward and positive 1151 * if forward. 1152 * 1153 * @param steps the number of steps to take back or forward in the back 1154 * forward list 1155 */ 1156 public void goBackOrForward(int steps) { 1157 checkThread(); 1158 mProvider.goBackOrForward(steps); 1159 } 1160 1161 /** 1162 * Gets whether private browsing is enabled in this WebView. 1163 */ 1164 public boolean isPrivateBrowsingEnabled() { 1165 checkThread(); 1166 return mProvider.isPrivateBrowsingEnabled(); 1167 } 1168 1169 /** 1170 * Scrolls the contents of this WebView up by half the view size. 1171 * 1172 * @param top true to jump to the top of the page 1173 * @return true if the page was scrolled 1174 */ 1175 public boolean pageUp(boolean top) { 1176 checkThread(); 1177 return mProvider.pageUp(top); 1178 } 1179 1180 /** 1181 * Scrolls the contents of this WebView down by half the page size. 1182 * 1183 * @param bottom true to jump to bottom of page 1184 * @return true if the page was scrolled 1185 */ 1186 public boolean pageDown(boolean bottom) { 1187 checkThread(); 1188 return mProvider.pageDown(bottom); 1189 } 1190 1191 /** 1192 * Posts a {@link VisualStateCallback}, which will be called when 1193 * the current state of the WebView is ready to be drawn. 1194 * 1195 * <p>Because updates to the DOM are processed asynchronously, updates to the DOM may not 1196 * immediately be reflected visually by subsequent {@link WebView#onDraw} invocations. The 1197 * {@link VisualStateCallback} provides a mechanism to notify the caller when the contents of 1198 * the DOM at the current time are ready to be drawn the next time the {@link WebView} 1199 * draws.</p> 1200 * 1201 * <p>The next draw after the callback completes is guaranteed to reflect all the updates to the 1202 * DOM up to the point at which the {@link VisualStateCallback} was posted, but it may also 1203 * contain updates applied after the callback was posted.</p> 1204 * 1205 * <p>The state of the DOM covered by this API includes the following: 1206 * <ul> 1207 * <li>primitive HTML elements (div, img, span, etc..)</li> 1208 * <li>images</li> 1209 * <li>CSS animations</li> 1210 * <li>WebGL</li> 1211 * <li>canvas</li> 1212 * </ul> 1213 * It does not include the state of: 1214 * <ul> 1215 * <li>the video tag</li> 1216 * </ul></p> 1217 * 1218 * <p>To guarantee that the {@link WebView} will successfully render the first frame 1219 * after the {@link VisualStateCallback#onComplete} method has been called a set of conditions 1220 * must be met: 1221 * <ul> 1222 * <li>If the {@link WebView}'s visibility is set to {@link View#VISIBLE VISIBLE} then 1223 * the {@link WebView} must be attached to the view hierarchy.</li> 1224 * <li>If the {@link WebView}'s visibility is set to {@link View#INVISIBLE INVISIBLE} 1225 * then the {@link WebView} must be attached to the view hierarchy and must be made 1226 * {@link View#VISIBLE VISIBLE} from the {@link VisualStateCallback#onComplete} method.</li> 1227 * <li>If the {@link WebView}'s visibility is set to {@link View#GONE GONE} then the 1228 * {@link WebView} must be attached to the view hierarchy and its 1229 * {@link AbsoluteLayout.LayoutParams LayoutParams}'s width and height need to be set to fixed 1230 * values and must be made {@link View#VISIBLE VISIBLE} from the 1231 * {@link VisualStateCallback#onComplete} method.</li> 1232 * </ul></p> 1233 * 1234 * <p>When using this API it is also recommended to enable pre-rasterization if the {@link 1235 * WebView} is off screen to avoid flickering. See {@link WebSettings#setOffscreenPreRaster} for 1236 * more details and do consider its caveats.</p> 1237 * 1238 * @param requestId An id that will be returned in the callback to allow callers to match 1239 * requests with callbacks. 1240 * @param callback The callback to be invoked. 1241 */ 1242 public void postVisualStateCallback(long requestId, VisualStateCallback callback) { 1243 checkThread(); 1244 mProvider.insertVisualStateCallback(requestId, callback); 1245 } 1246 1247 /** 1248 * Clears this WebView so that onDraw() will draw nothing but white background, 1249 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY. 1250 * @deprecated Use WebView.loadUrl("about:blank") to reliably reset the view state 1251 * and release page resources (including any running JavaScript). 1252 */ 1253 @Deprecated 1254 public void clearView() { 1255 checkThread(); 1256 mProvider.clearView(); 1257 } 1258 1259 /** 1260 * Gets a new picture that captures the current contents of this WebView. 1261 * The picture is of the entire document being displayed, and is not 1262 * limited to the area currently displayed by this WebView. Also, the 1263 * picture is a static copy and is unaffected by later changes to the 1264 * content being displayed. 1265 * <p> 1266 * Note that due to internal changes, for API levels between 1267 * {@link android.os.Build.VERSION_CODES#HONEYCOMB} and 1268 * {@link android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH} inclusive, the 1269 * picture does not include fixed position elements or scrollable divs. 1270 * <p> 1271 * Note that from {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} the returned picture 1272 * should only be drawn into bitmap-backed Canvas - using any other type of Canvas will involve 1273 * additional conversion at a cost in memory and performance. Also the 1274 * {@link android.graphics.Picture#createFromStream} and 1275 * {@link android.graphics.Picture#writeToStream} methods are not supported on the 1276 * returned object. 1277 * 1278 * @deprecated Use {@link #onDraw} to obtain a bitmap snapshot of the WebView, or 1279 * {@link #saveWebArchive} to save the content to a file. 1280 * 1281 * @return a picture that captures the current contents of this WebView 1282 */ 1283 @Deprecated 1284 public Picture capturePicture() { 1285 checkThread(); 1286 return mProvider.capturePicture(); 1287 } 1288 1289 /** 1290 * @deprecated Use {@link #createPrintDocumentAdapter(String)} which requires user 1291 * to provide a print document name. 1292 */ 1293 @Deprecated 1294 public PrintDocumentAdapter createPrintDocumentAdapter() { 1295 checkThread(); 1296 return mProvider.createPrintDocumentAdapter("default"); 1297 } 1298 1299 /** 1300 * Creates a PrintDocumentAdapter that provides the content of this WebView for printing. 1301 * 1302 * The adapter works by converting the WebView contents to a PDF stream. The WebView cannot 1303 * be drawn during the conversion process - any such draws are undefined. It is recommended 1304 * to use a dedicated off screen WebView for the printing. If necessary, an application may 1305 * temporarily hide a visible WebView by using a custom PrintDocumentAdapter instance 1306 * wrapped around the object returned and observing the onStart and onFinish methods. See 1307 * {@link android.print.PrintDocumentAdapter} for more information. 1308 * 1309 * @param documentName The user-facing name of the printed document. See 1310 * {@link android.print.PrintDocumentInfo} 1311 */ 1312 public PrintDocumentAdapter createPrintDocumentAdapter(String documentName) { 1313 checkThread(); 1314 return mProvider.createPrintDocumentAdapter(documentName); 1315 } 1316 1317 /** 1318 * Gets the current scale of this WebView. 1319 * 1320 * @return the current scale 1321 * 1322 * @deprecated This method is prone to inaccuracy due to race conditions 1323 * between the web rendering and UI threads; prefer 1324 * {@link WebViewClient#onScaleChanged}. 1325 */ 1326 @Deprecated 1327 @ViewDebug.ExportedProperty(category = "webview") 1328 public float getScale() { 1329 checkThread(); 1330 return mProvider.getScale(); 1331 } 1332 1333 /** 1334 * Sets the initial scale for this WebView. 0 means default. 1335 * The behavior for the default scale depends on the state of 1336 * {@link WebSettings#getUseWideViewPort()} and 1337 * {@link WebSettings#getLoadWithOverviewMode()}. 1338 * If the content fits into the WebView control by width, then 1339 * the zoom is set to 100%. For wide content, the behavior 1340 * depends on the state of {@link WebSettings#getLoadWithOverviewMode()}. 1341 * If its value is true, the content will be zoomed out to be fit 1342 * by width into the WebView control, otherwise not. 1343 * 1344 * If initial scale is greater than 0, WebView starts with this value 1345 * as initial scale. 1346 * Please note that unlike the scale properties in the viewport meta tag, 1347 * this method doesn't take the screen density into account. 1348 * 1349 * @param scaleInPercent the initial scale in percent 1350 */ 1351 public void setInitialScale(int scaleInPercent) { 1352 checkThread(); 1353 mProvider.setInitialScale(scaleInPercent); 1354 } 1355 1356 /** 1357 * Invokes the graphical zoom picker widget for this WebView. This will 1358 * result in the zoom widget appearing on the screen to control the zoom 1359 * level of this WebView. 1360 */ 1361 public void invokeZoomPicker() { 1362 checkThread(); 1363 mProvider.invokeZoomPicker(); 1364 } 1365 1366 /** 1367 * Gets a HitTestResult based on the current cursor node. If a HTML::a 1368 * tag is found and the anchor has a non-JavaScript URL, the HitTestResult 1369 * type is set to SRC_ANCHOR_TYPE and the URL is set in the "extra" field. 1370 * If the anchor does not have a URL or if it is a JavaScript URL, the type 1371 * will be UNKNOWN_TYPE and the URL has to be retrieved through 1372 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1373 * found, the HitTestResult type is set to IMAGE_TYPE and the URL is set in 1374 * the "extra" field. A type of 1375 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a URL that has an image as 1376 * a child node. If a phone number is found, the HitTestResult type is set 1377 * to PHONE_TYPE and the phone number is set in the "extra" field of 1378 * HitTestResult. If a map address is found, the HitTestResult type is set 1379 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1380 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1381 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1382 * HitTestResult type is set to UNKNOWN_TYPE. 1383 */ 1384 public HitTestResult getHitTestResult() { 1385 checkThread(); 1386 return mProvider.getHitTestResult(); 1387 } 1388 1389 /** 1390 * Requests the anchor or image element URL at the last tapped point. 1391 * If hrefMsg is null, this method returns immediately and does not 1392 * dispatch hrefMsg to its target. If the tapped point hits an image, 1393 * an anchor, or an image in an anchor, the message associates 1394 * strings in named keys in its data. The value paired with the key 1395 * may be an empty string. 1396 * 1397 * @param hrefMsg the message to be dispatched with the result of the 1398 * request. The message data contains three keys. "url" 1399 * returns the anchor's href attribute. "title" returns the 1400 * anchor's text. "src" returns the image's src attribute. 1401 */ 1402 public void requestFocusNodeHref(Message hrefMsg) { 1403 checkThread(); 1404 mProvider.requestFocusNodeHref(hrefMsg); 1405 } 1406 1407 /** 1408 * Requests the URL of the image last touched by the user. msg will be sent 1409 * to its target with a String representing the URL as its object. 1410 * 1411 * @param msg the message to be dispatched with the result of the request 1412 * as the data member with "url" as key. The result can be null. 1413 */ 1414 public void requestImageRef(Message msg) { 1415 checkThread(); 1416 mProvider.requestImageRef(msg); 1417 } 1418 1419 /** 1420 * Gets the URL for the current page. This is not always the same as the URL 1421 * passed to WebViewClient.onPageStarted because although the load for 1422 * that URL has begun, the current page may not have changed. 1423 * 1424 * @return the URL for the current page 1425 */ 1426 @ViewDebug.ExportedProperty(category = "webview") 1427 public String getUrl() { 1428 checkThread(); 1429 return mProvider.getUrl(); 1430 } 1431 1432 /** 1433 * Gets the original URL for the current page. This is not always the same 1434 * as the URL passed to WebViewClient.onPageStarted because although the 1435 * load for that URL has begun, the current page may not have changed. 1436 * Also, there may have been redirects resulting in a different URL to that 1437 * originally requested. 1438 * 1439 * @return the URL that was originally requested for the current page 1440 */ 1441 @ViewDebug.ExportedProperty(category = "webview") 1442 public String getOriginalUrl() { 1443 checkThread(); 1444 return mProvider.getOriginalUrl(); 1445 } 1446 1447 /** 1448 * Gets the title for the current page. This is the title of the current page 1449 * until WebViewClient.onReceivedTitle is called. 1450 * 1451 * @return the title for the current page 1452 */ 1453 @ViewDebug.ExportedProperty(category = "webview") 1454 public String getTitle() { 1455 checkThread(); 1456 return mProvider.getTitle(); 1457 } 1458 1459 /** 1460 * Gets the favicon for the current page. This is the favicon of the current 1461 * page until WebViewClient.onReceivedIcon is called. 1462 * 1463 * @return the favicon for the current page 1464 */ 1465 public Bitmap getFavicon() { 1466 checkThread(); 1467 return mProvider.getFavicon(); 1468 } 1469 1470 /** 1471 * Gets the touch icon URL for the apple-touch-icon <link> element, or 1472 * a URL on this site's server pointing to the standard location of a 1473 * touch icon. 1474 * 1475 * @hide 1476 */ 1477 public String getTouchIconUrl() { 1478 return mProvider.getTouchIconUrl(); 1479 } 1480 1481 /** 1482 * Gets the progress for the current page. 1483 * 1484 * @return the progress for the current page between 0 and 100 1485 */ 1486 public int getProgress() { 1487 checkThread(); 1488 return mProvider.getProgress(); 1489 } 1490 1491 /** 1492 * Gets the height of the HTML content. 1493 * 1494 * @return the height of the HTML content 1495 */ 1496 @ViewDebug.ExportedProperty(category = "webview") 1497 public int getContentHeight() { 1498 checkThread(); 1499 return mProvider.getContentHeight(); 1500 } 1501 1502 /** 1503 * Gets the width of the HTML content. 1504 * 1505 * @return the width of the HTML content 1506 * @hide 1507 */ 1508 @ViewDebug.ExportedProperty(category = "webview") 1509 public int getContentWidth() { 1510 return mProvider.getContentWidth(); 1511 } 1512 1513 /** 1514 * Pauses all layout, parsing, and JavaScript timers for all WebViews. This 1515 * is a global requests, not restricted to just this WebView. This can be 1516 * useful if the application has been paused. 1517 */ 1518 public void pauseTimers() { 1519 checkThread(); 1520 mProvider.pauseTimers(); 1521 } 1522 1523 /** 1524 * Resumes all layout, parsing, and JavaScript timers for all WebViews. 1525 * This will resume dispatching all timers. 1526 */ 1527 public void resumeTimers() { 1528 checkThread(); 1529 mProvider.resumeTimers(); 1530 } 1531 1532 /** 1533 * Does a best-effort attempt to pause any processing that can be paused 1534 * safely, such as animations and geolocation. Note that this call 1535 * does not pause JavaScript. To pause JavaScript globally, use 1536 * {@link #pauseTimers}. 1537 * 1538 * To resume WebView, call {@link #onResume}. 1539 */ 1540 public void onPause() { 1541 checkThread(); 1542 mProvider.onPause(); 1543 } 1544 1545 /** 1546 * Resumes a WebView after a previous call to {@link #onPause}. 1547 */ 1548 public void onResume() { 1549 checkThread(); 1550 mProvider.onResume(); 1551 } 1552 1553 /** 1554 * Gets whether this WebView is paused, meaning onPause() was called. 1555 * Calling onResume() sets the paused state back to false. 1556 * 1557 * @hide 1558 */ 1559 public boolean isPaused() { 1560 return mProvider.isPaused(); 1561 } 1562 1563 /** 1564 * Informs this WebView that memory is low so that it can free any available 1565 * memory. 1566 * @deprecated Memory caches are automatically dropped when no longer needed, and in response 1567 * to system memory pressure. 1568 */ 1569 @Deprecated 1570 public void freeMemory() { 1571 checkThread(); 1572 mProvider.freeMemory(); 1573 } 1574 1575 /** 1576 * Clears the resource cache. Note that the cache is per-application, so 1577 * this will clear the cache for all WebViews used. 1578 * 1579 * @param includeDiskFiles if false, only the RAM cache is cleared 1580 */ 1581 public void clearCache(boolean includeDiskFiles) { 1582 checkThread(); 1583 mProvider.clearCache(includeDiskFiles); 1584 } 1585 1586 /** 1587 * Removes the autocomplete popup from the currently focused form field, if 1588 * present. Note this only affects the display of the autocomplete popup, 1589 * it does not remove any saved form data from this WebView's store. To do 1590 * that, use {@link WebViewDatabase#clearFormData}. 1591 */ 1592 public void clearFormData() { 1593 checkThread(); 1594 mProvider.clearFormData(); 1595 } 1596 1597 /** 1598 * Tells this WebView to clear its internal back/forward list. 1599 */ 1600 public void clearHistory() { 1601 checkThread(); 1602 mProvider.clearHistory(); 1603 } 1604 1605 /** 1606 * Clears the SSL preferences table stored in response to proceeding with 1607 * SSL certificate errors. 1608 */ 1609 public void clearSslPreferences() { 1610 checkThread(); 1611 mProvider.clearSslPreferences(); 1612 } 1613 1614 /** 1615 * Clears the client certificate preferences stored in response 1616 * to proceeding/cancelling client cert requests. Note that WebView 1617 * automatically clears these preferences when it receives a 1618 * {@link KeyChain#ACTION_STORAGE_CHANGED} intent. The preferences are 1619 * shared by all the WebViews that are created by the embedder application. 1620 * 1621 * @param onCleared A runnable to be invoked when client certs are cleared. 1622 * The embedder can pass null if not interested in the 1623 * callback. The runnable will be called in UI thread. 1624 */ 1625 public static void clearClientCertPreferences(Runnable onCleared) { 1626 getFactory().getStatics().clearClientCertPreferences(onCleared); 1627 } 1628 1629 /** 1630 * Gets the WebBackForwardList for this WebView. This contains the 1631 * back/forward list for use in querying each item in the history stack. 1632 * This is a copy of the private WebBackForwardList so it contains only a 1633 * snapshot of the current state. Multiple calls to this method may return 1634 * different objects. The object returned from this method will not be 1635 * updated to reflect any new state. 1636 */ 1637 public WebBackForwardList copyBackForwardList() { 1638 checkThread(); 1639 return mProvider.copyBackForwardList(); 1640 1641 } 1642 1643 /** 1644 * Registers the listener to be notified as find-on-page operations 1645 * progress. This will replace the current listener. 1646 * 1647 * @param listener an implementation of {@link FindListener} 1648 */ 1649 public void setFindListener(FindListener listener) { 1650 checkThread(); 1651 setupFindListenerIfNeeded(); 1652 mFindListener.mUserFindListener = listener; 1653 } 1654 1655 /** 1656 * Highlights and scrolls to the next match found by 1657 * {@link #findAllAsync}, wrapping around page boundaries as necessary. 1658 * Notifies any registered {@link FindListener}. If {@link #findAllAsync(String)} 1659 * has not been called yet, or if {@link #clearMatches} has been called since the 1660 * last find operation, this function does nothing. 1661 * 1662 * @param forward the direction to search 1663 * @see #setFindListener 1664 */ 1665 public void findNext(boolean forward) { 1666 checkThread(); 1667 mProvider.findNext(forward); 1668 } 1669 1670 /** 1671 * Finds all instances of find on the page and highlights them. 1672 * Notifies any registered {@link FindListener}. 1673 * 1674 * @param find the string to find 1675 * @return the number of occurrences of the String "find" that were found 1676 * @deprecated {@link #findAllAsync} is preferred. 1677 * @see #setFindListener 1678 */ 1679 @Deprecated 1680 public int findAll(String find) { 1681 checkThread(); 1682 StrictMode.noteSlowCall("findAll blocks UI: prefer findAllAsync"); 1683 return mProvider.findAll(find); 1684 } 1685 1686 /** 1687 * Finds all instances of find on the page and highlights them, 1688 * asynchronously. Notifies any registered {@link FindListener}. 1689 * Successive calls to this will cancel any pending searches. 1690 * 1691 * @param find the string to find. 1692 * @see #setFindListener 1693 */ 1694 public void findAllAsync(String find) { 1695 checkThread(); 1696 mProvider.findAllAsync(find); 1697 } 1698 1699 /** 1700 * Starts an ActionMode for finding text in this WebView. Only works if this 1701 * WebView is attached to the view system. 1702 * 1703 * @param text if non-null, will be the initial text to search for. 1704 * Otherwise, the last String searched for in this WebView will 1705 * be used to start. 1706 * @param showIme if true, show the IME, assuming the user will begin typing. 1707 * If false and text is non-null, perform a find all. 1708 * @return true if the find dialog is shown, false otherwise 1709 * @deprecated This method does not work reliably on all Android versions; 1710 * implementing a custom find dialog using WebView.findAllAsync() 1711 * provides a more robust solution. 1712 */ 1713 @Deprecated 1714 public boolean showFindDialog(String text, boolean showIme) { 1715 checkThread(); 1716 return mProvider.showFindDialog(text, showIme); 1717 } 1718 1719 /** 1720 * Gets the first substring consisting of the address of a physical 1721 * location. Currently, only addresses in the United States are detected, 1722 * and consist of: 1723 * <ul> 1724 * <li>a house number</li> 1725 * <li>a street name</li> 1726 * <li>a street type (Road, Circle, etc), either spelled out or 1727 * abbreviated</li> 1728 * <li>a city name</li> 1729 * <li>a state or territory, either spelled out or two-letter abbr</li> 1730 * <li>an optional 5 digit or 9 digit zip code</li> 1731 * </ul> 1732 * All names must be correctly capitalized, and the zip code, if present, 1733 * must be valid for the state. The street type must be a standard USPS 1734 * spelling or abbreviation. The state or territory must also be spelled 1735 * or abbreviated using USPS standards. The house number may not exceed 1736 * five digits. 1737 * 1738 * @param addr the string to search for addresses 1739 * @return the address, or if no address is found, null 1740 */ 1741 public static String findAddress(String addr) { 1742 // TODO: Rewrite this in Java so it is not needed to start up chromium 1743 // Could also be deprecated 1744 return getFactory().getStatics().findAddress(addr); 1745 } 1746 1747 /** 1748 * For apps targeting the L release, WebView has a new default behavior that reduces 1749 * memory footprint and increases performance by intelligently choosing 1750 * the portion of the HTML document that needs to be drawn. These 1751 * optimizations are transparent to the developers. However, under certain 1752 * circumstances, an App developer may want to disable them: 1753 * <ol> 1754 * <li>When an app uses {@link #onDraw} to do own drawing and accesses portions 1755 * of the page that is way outside the visible portion of the page.</li> 1756 * <li>When an app uses {@link #capturePicture} to capture a very large HTML document. 1757 * Note that capturePicture is a deprecated API.</li> 1758 * </ol> 1759 * Enabling drawing the entire HTML document has a significant performance 1760 * cost. This method should be called before any WebViews are created. 1761 */ 1762 public static void enableSlowWholeDocumentDraw() { 1763 getFactory().getStatics().enableSlowWholeDocumentDraw(); 1764 } 1765 1766 /** 1767 * Clears the highlighting surrounding text matches created by 1768 * {@link #findAllAsync}. 1769 */ 1770 public void clearMatches() { 1771 checkThread(); 1772 mProvider.clearMatches(); 1773 } 1774 1775 /** 1776 * Queries the document to see if it contains any image references. The 1777 * message object will be dispatched with arg1 being set to 1 if images 1778 * were found and 0 if the document does not reference any images. 1779 * 1780 * @param response the message that will be dispatched with the result 1781 */ 1782 public void documentHasImages(Message response) { 1783 checkThread(); 1784 mProvider.documentHasImages(response); 1785 } 1786 1787 /** 1788 * Sets the WebViewClient that will receive various notifications and 1789 * requests. This will replace the current handler. 1790 * 1791 * @param client an implementation of WebViewClient 1792 */ 1793 public void setWebViewClient(WebViewClient client) { 1794 checkThread(); 1795 mProvider.setWebViewClient(client); 1796 } 1797 1798 /** 1799 * Registers the interface to be used when content can not be handled by 1800 * the rendering engine, and should be downloaded instead. This will replace 1801 * the current handler. 1802 * 1803 * @param listener an implementation of DownloadListener 1804 */ 1805 public void setDownloadListener(DownloadListener listener) { 1806 checkThread(); 1807 mProvider.setDownloadListener(listener); 1808 } 1809 1810 /** 1811 * Sets the chrome handler. This is an implementation of WebChromeClient for 1812 * use in handling JavaScript dialogs, favicons, titles, and the progress. 1813 * This will replace the current handler. 1814 * 1815 * @param client an implementation of WebChromeClient 1816 */ 1817 public void setWebChromeClient(WebChromeClient client) { 1818 checkThread(); 1819 mProvider.setWebChromeClient(client); 1820 } 1821 1822 /** 1823 * Sets the Picture listener. This is an interface used to receive 1824 * notifications of a new Picture. 1825 * 1826 * @param listener an implementation of WebView.PictureListener 1827 * @deprecated This method is now obsolete. 1828 */ 1829 @Deprecated 1830 public void setPictureListener(PictureListener listener) { 1831 checkThread(); 1832 mProvider.setPictureListener(listener); 1833 } 1834 1835 /** 1836 * Injects the supplied Java object into this WebView. The object is 1837 * injected into the JavaScript context of the main frame, using the 1838 * supplied name. This allows the Java object's methods to be 1839 * accessed from JavaScript. For applications targeted to API 1840 * level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 1841 * and above, only public methods that are annotated with 1842 * {@link android.webkit.JavascriptInterface} can be accessed from JavaScript. 1843 * For applications targeted to API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN} or below, 1844 * all public methods (including the inherited ones) can be accessed, see the 1845 * important security note below for implications. 1846 * <p> Note that injected objects will not 1847 * appear in JavaScript until the page is next (re)loaded. For example: 1848 * <pre> 1849 * class JsObject { 1850 * {@literal @}JavascriptInterface 1851 * public String toString() { return "injectedObject"; } 1852 * } 1853 * webView.addJavascriptInterface(new JsObject(), "injectedObject"); 1854 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 1855 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 1856 * <p> 1857 * <strong>IMPORTANT:</strong> 1858 * <ul> 1859 * <li> This method can be used to allow JavaScript to control the host 1860 * application. This is a powerful feature, but also presents a security 1861 * risk for apps targeting {@link android.os.Build.VERSION_CODES#JELLY_BEAN} or earlier. 1862 * Apps that target a version later than {@link android.os.Build.VERSION_CODES#JELLY_BEAN} 1863 * are still vulnerable if the app runs on a device running Android earlier than 4.2. 1864 * The most secure way to use this method is to target {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 1865 * and to ensure the method is called only when running on Android 4.2 or later. 1866 * With these older versions, JavaScript could use reflection to access an 1867 * injected object's public fields. Use of this method in a WebView 1868 * containing untrusted content could allow an attacker to manipulate the 1869 * host application in unintended ways, executing Java code with the 1870 * permissions of the host application. Use extreme care when using this 1871 * method in a WebView which could contain untrusted content.</li> 1872 * <li> JavaScript interacts with Java object on a private, background 1873 * thread of this WebView. Care is therefore required to maintain thread 1874 * safety. 1875 * </li> 1876 * <li> The Java object's fields are not accessible.</li> 1877 * <li> For applications targeted to API level {@link android.os.Build.VERSION_CODES#LOLLIPOP} 1878 * and above, methods of injected Java objects are enumerable from 1879 * JavaScript.</li> 1880 * </ul> 1881 * 1882 * @param object the Java object to inject into this WebView's JavaScript 1883 * context. Null values are ignored. 1884 * @param name the name used to expose the object in JavaScript 1885 */ 1886 public void addJavascriptInterface(Object object, String name) { 1887 checkThread(); 1888 mProvider.addJavascriptInterface(object, name); 1889 } 1890 1891 /** 1892 * Removes a previously injected Java object from this WebView. Note that 1893 * the removal will not be reflected in JavaScript until the page is next 1894 * (re)loaded. See {@link #addJavascriptInterface}. 1895 * 1896 * @param name the name used to expose the object in JavaScript 1897 */ 1898 public void removeJavascriptInterface(String name) { 1899 checkThread(); 1900 mProvider.removeJavascriptInterface(name); 1901 } 1902 1903 /** 1904 * Creates a message channel to communicate with JS and returns the message 1905 * ports that represent the endpoints of this message channel. The HTML5 message 1906 * channel functionality is described 1907 * <a href="https://html.spec.whatwg.org/multipage/comms.html#messagechannel">here 1908 * </a> 1909 * 1910 * <p>The returned message channels are entangled and already in started state.</p> 1911 * 1912 * @return the two message ports that form the message channel. 1913 */ 1914 public WebMessagePort[] createWebMessageChannel() { 1915 checkThread(); 1916 return mProvider.createWebMessageChannel(); 1917 } 1918 1919 /** 1920 * Post a message to main frame. The embedded application can restrict the 1921 * messages to a certain target origin. See 1922 * <a href="https://html.spec.whatwg.org/multipage/comms.html#posting-messages"> 1923 * HTML5 spec</a> for how target origin can be used. 1924 * 1925 * @param message the WebMessage 1926 * @param targetOrigin the target origin. This is the origin of the page 1927 * that is intended to receive the message. For best security 1928 * practices, the user should not specify a wildcard (*) when 1929 * specifying the origin. 1930 */ 1931 public void postWebMessage(WebMessage message, Uri targetOrigin) { 1932 checkThread(); 1933 mProvider.postMessageToMainFrame(message, targetOrigin); 1934 } 1935 1936 /** 1937 * Gets the WebSettings object used to control the settings for this 1938 * WebView. 1939 * 1940 * @return a WebSettings object that can be used to control this WebView's 1941 * settings 1942 */ 1943 public WebSettings getSettings() { 1944 checkThread(); 1945 return mProvider.getSettings(); 1946 } 1947 1948 /** 1949 * Enables debugging of web contents (HTML / CSS / JavaScript) 1950 * loaded into any WebViews of this application. This flag can be enabled 1951 * in order to facilitate debugging of web layouts and JavaScript 1952 * code running inside WebViews. Please refer to WebView documentation 1953 * for the debugging guide. 1954 * 1955 * The default is false. 1956 * 1957 * @param enabled whether to enable web contents debugging 1958 */ 1959 public static void setWebContentsDebuggingEnabled(boolean enabled) { 1960 getFactory().getStatics().setWebContentsDebuggingEnabled(enabled); 1961 } 1962 1963 /** 1964 * Gets the list of currently loaded plugins. 1965 * 1966 * @return the list of currently loaded plugins 1967 * @deprecated This was used for Gears, which has been deprecated. 1968 * @hide 1969 */ 1970 @Deprecated 1971 public static synchronized PluginList getPluginList() { 1972 return new PluginList(); 1973 } 1974 1975 /** 1976 * @deprecated This was used for Gears, which has been deprecated. 1977 * @hide 1978 */ 1979 @Deprecated 1980 public void refreshPlugins(boolean reloadOpenPages) { 1981 checkThread(); 1982 } 1983 1984 /** 1985 * Puts this WebView into text selection mode. Do not rely on this 1986 * functionality; it will be deprecated in the future. 1987 * 1988 * @deprecated This method is now obsolete. 1989 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 1990 */ 1991 @Deprecated 1992 public void emulateShiftHeld() { 1993 checkThread(); 1994 } 1995 1996 /** 1997 * @deprecated WebView no longer needs to implement 1998 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 1999 */ 2000 @Override 2001 // Cannot add @hide as this can always be accessed via the interface. 2002 @Deprecated 2003 public void onChildViewAdded(View parent, View child) {} 2004 2005 /** 2006 * @deprecated WebView no longer needs to implement 2007 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 2008 */ 2009 @Override 2010 // Cannot add @hide as this can always be accessed via the interface. 2011 @Deprecated 2012 public void onChildViewRemoved(View p, View child) {} 2013 2014 /** 2015 * @deprecated WebView should not have implemented 2016 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 2017 */ 2018 @Override 2019 // Cannot add @hide as this can always be accessed via the interface. 2020 @Deprecated 2021 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 2022 } 2023 2024 /** 2025 * @deprecated Only the default case, true, will be supported in a future version. 2026 */ 2027 @Deprecated 2028 public void setMapTrackballToArrowKeys(boolean setMap) { 2029 checkThread(); 2030 mProvider.setMapTrackballToArrowKeys(setMap); 2031 } 2032 2033 2034 public void flingScroll(int vx, int vy) { 2035 checkThread(); 2036 mProvider.flingScroll(vx, vy); 2037 } 2038 2039 /** 2040 * Gets the zoom controls for this WebView, as a separate View. The caller 2041 * is responsible for inserting this View into the layout hierarchy. 2042 * <p/> 2043 * API level {@link android.os.Build.VERSION_CODES#CUPCAKE} introduced 2044 * built-in zoom mechanisms for the WebView, as opposed to these separate 2045 * zoom controls. The built-in mechanisms are preferred and can be enabled 2046 * using {@link WebSettings#setBuiltInZoomControls}. 2047 * 2048 * @deprecated the built-in zoom mechanisms are preferred 2049 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN} 2050 */ 2051 @Deprecated 2052 public View getZoomControls() { 2053 checkThread(); 2054 return mProvider.getZoomControls(); 2055 } 2056 2057 /** 2058 * Gets whether this WebView can be zoomed in. 2059 * 2060 * @return true if this WebView can be zoomed in 2061 * 2062 * @deprecated This method is prone to inaccuracy due to race conditions 2063 * between the web rendering and UI threads; prefer 2064 * {@link WebViewClient#onScaleChanged}. 2065 */ 2066 @Deprecated 2067 public boolean canZoomIn() { 2068 checkThread(); 2069 return mProvider.canZoomIn(); 2070 } 2071 2072 /** 2073 * Gets whether this WebView can be zoomed out. 2074 * 2075 * @return true if this WebView can be zoomed out 2076 * 2077 * @deprecated This method is prone to inaccuracy due to race conditions 2078 * between the web rendering and UI threads; prefer 2079 * {@link WebViewClient#onScaleChanged}. 2080 */ 2081 @Deprecated 2082 public boolean canZoomOut() { 2083 checkThread(); 2084 return mProvider.canZoomOut(); 2085 } 2086 2087 /** 2088 * Performs a zoom operation in this WebView. 2089 * 2090 * @param zoomFactor the zoom factor to apply. The zoom factor will be clamped to the WebView's 2091 * zoom limits. This value must be in the range 0.01 to 100.0 inclusive. 2092 */ 2093 public void zoomBy(float zoomFactor) { 2094 checkThread(); 2095 if (zoomFactor < 0.01) 2096 throw new IllegalArgumentException("zoomFactor must be greater than 0.01."); 2097 if (zoomFactor > 100.0) 2098 throw new IllegalArgumentException("zoomFactor must be less than 100."); 2099 mProvider.zoomBy(zoomFactor); 2100 } 2101 2102 /** 2103 * Performs zoom in in this WebView. 2104 * 2105 * @return true if zoom in succeeds, false if no zoom changes 2106 */ 2107 public boolean zoomIn() { 2108 checkThread(); 2109 return mProvider.zoomIn(); 2110 } 2111 2112 /** 2113 * Performs zoom out in this WebView. 2114 * 2115 * @return true if zoom out succeeds, false if no zoom changes 2116 */ 2117 public boolean zoomOut() { 2118 checkThread(); 2119 return mProvider.zoomOut(); 2120 } 2121 2122 /** 2123 * @deprecated This method is now obsolete. 2124 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 2125 */ 2126 @Deprecated 2127 public void debugDump() { 2128 checkThread(); 2129 } 2130 2131 /** 2132 * See {@link ViewDebug.HierarchyHandler#dumpViewHierarchyWithProperties(BufferedWriter, int)} 2133 * @hide 2134 */ 2135 @Override 2136 public void dumpViewHierarchyWithProperties(BufferedWriter out, int level) { 2137 mProvider.dumpViewHierarchyWithProperties(out, level); 2138 } 2139 2140 /** 2141 * See {@link ViewDebug.HierarchyHandler#findHierarchyView(String, int)} 2142 * @hide 2143 */ 2144 @Override 2145 public View findHierarchyView(String className, int hashCode) { 2146 return mProvider.findHierarchyView(className, hashCode); 2147 } 2148 2149 //------------------------------------------------------------------------- 2150 // Interface for WebView providers 2151 //------------------------------------------------------------------------- 2152 2153 /** 2154 * Gets the WebViewProvider. Used by providers to obtain the underlying 2155 * implementation, e.g. when the application responds to 2156 * WebViewClient.onCreateWindow() request. 2157 * 2158 * @hide WebViewProvider is not public API. 2159 */ 2160 @SystemApi 2161 public WebViewProvider getWebViewProvider() { 2162 return mProvider; 2163 } 2164 2165 /** 2166 * Callback interface, allows the provider implementation to access non-public methods 2167 * and fields, and make super-class calls in this WebView instance. 2168 * @hide Only for use by WebViewProvider implementations 2169 */ 2170 @SystemApi 2171 public class PrivateAccess { 2172 // ---- Access to super-class methods ---- 2173 public int super_getScrollBarStyle() { 2174 return WebView.super.getScrollBarStyle(); 2175 } 2176 2177 public void super_scrollTo(int scrollX, int scrollY) { 2178 WebView.super.scrollTo(scrollX, scrollY); 2179 } 2180 2181 public void super_computeScroll() { 2182 WebView.super.computeScroll(); 2183 } 2184 2185 public boolean super_onHoverEvent(MotionEvent event) { 2186 return WebView.super.onHoverEvent(event); 2187 } 2188 2189 public boolean super_performAccessibilityAction(int action, Bundle arguments) { 2190 return WebView.super.performAccessibilityActionInternal(action, arguments); 2191 } 2192 2193 public boolean super_performLongClick() { 2194 return WebView.super.performLongClick(); 2195 } 2196 2197 public boolean super_setFrame(int left, int top, int right, int bottom) { 2198 return WebView.super.setFrame(left, top, right, bottom); 2199 } 2200 2201 public boolean super_dispatchKeyEvent(KeyEvent event) { 2202 return WebView.super.dispatchKeyEvent(event); 2203 } 2204 2205 public boolean super_onGenericMotionEvent(MotionEvent event) { 2206 return WebView.super.onGenericMotionEvent(event); 2207 } 2208 2209 public boolean super_requestFocus(int direction, Rect previouslyFocusedRect) { 2210 return WebView.super.requestFocus(direction, previouslyFocusedRect); 2211 } 2212 2213 public void super_setLayoutParams(ViewGroup.LayoutParams params) { 2214 WebView.super.setLayoutParams(params); 2215 } 2216 2217 public void super_startActivityForResult(Intent intent, int requestCode) { 2218 WebView.super.startActivityForResult(intent, requestCode); 2219 } 2220 2221 // ---- Access to non-public methods ---- 2222 public void overScrollBy(int deltaX, int deltaY, 2223 int scrollX, int scrollY, 2224 int scrollRangeX, int scrollRangeY, 2225 int maxOverScrollX, int maxOverScrollY, 2226 boolean isTouchEvent) { 2227 WebView.this.overScrollBy(deltaX, deltaY, scrollX, scrollY, scrollRangeX, scrollRangeY, 2228 maxOverScrollX, maxOverScrollY, isTouchEvent); 2229 } 2230 2231 public void awakenScrollBars(int duration) { 2232 WebView.this.awakenScrollBars(duration); 2233 } 2234 2235 public void awakenScrollBars(int duration, boolean invalidate) { 2236 WebView.this.awakenScrollBars(duration, invalidate); 2237 } 2238 2239 public float getVerticalScrollFactor() { 2240 return WebView.this.getVerticalScrollFactor(); 2241 } 2242 2243 public float getHorizontalScrollFactor() { 2244 return WebView.this.getHorizontalScrollFactor(); 2245 } 2246 2247 public void setMeasuredDimension(int measuredWidth, int measuredHeight) { 2248 WebView.this.setMeasuredDimension(measuredWidth, measuredHeight); 2249 } 2250 2251 public void onScrollChanged(int l, int t, int oldl, int oldt) { 2252 WebView.this.onScrollChanged(l, t, oldl, oldt); 2253 } 2254 2255 public int getHorizontalScrollbarHeight() { 2256 return WebView.this.getHorizontalScrollbarHeight(); 2257 } 2258 2259 public void super_onDrawVerticalScrollBar(Canvas canvas, Drawable scrollBar, 2260 int l, int t, int r, int b) { 2261 WebView.super.onDrawVerticalScrollBar(canvas, scrollBar, l, t, r, b); 2262 } 2263 2264 // ---- Access to (non-public) fields ---- 2265 /** Raw setter for the scroll X value, without invoking onScrollChanged handlers etc. */ 2266 public void setScrollXRaw(int scrollX) { 2267 WebView.this.mScrollX = scrollX; 2268 } 2269 2270 /** Raw setter for the scroll Y value, without invoking onScrollChanged handlers etc. */ 2271 public void setScrollYRaw(int scrollY) { 2272 WebView.this.mScrollY = scrollY; 2273 } 2274 2275 } 2276 2277 //------------------------------------------------------------------------- 2278 // Package-private internal stuff 2279 //------------------------------------------------------------------------- 2280 2281 // Only used by android.webkit.FindActionModeCallback. 2282 void setFindDialogFindListener(FindListener listener) { 2283 checkThread(); 2284 setupFindListenerIfNeeded(); 2285 mFindListener.mFindDialogFindListener = listener; 2286 } 2287 2288 // Only used by android.webkit.FindActionModeCallback. 2289 void notifyFindDialogDismissed() { 2290 checkThread(); 2291 mProvider.notifyFindDialogDismissed(); 2292 } 2293 2294 //------------------------------------------------------------------------- 2295 // Private internal stuff 2296 //------------------------------------------------------------------------- 2297 2298 private WebViewProvider mProvider; 2299 2300 /** 2301 * In addition to the FindListener that the user may set via the WebView.setFindListener 2302 * API, FindActionModeCallback will register it's own FindListener. We keep them separate 2303 * via this class so that the two FindListeners can potentially exist at once. 2304 */ 2305 private class FindListenerDistributor implements FindListener { 2306 private FindListener mFindDialogFindListener; 2307 private FindListener mUserFindListener; 2308 2309 @Override 2310 public void onFindResultReceived(int activeMatchOrdinal, int numberOfMatches, 2311 boolean isDoneCounting) { 2312 if (mFindDialogFindListener != null) { 2313 mFindDialogFindListener.onFindResultReceived(activeMatchOrdinal, numberOfMatches, 2314 isDoneCounting); 2315 } 2316 2317 if (mUserFindListener != null) { 2318 mUserFindListener.onFindResultReceived(activeMatchOrdinal, numberOfMatches, 2319 isDoneCounting); 2320 } 2321 } 2322 } 2323 private FindListenerDistributor mFindListener; 2324 2325 private void setupFindListenerIfNeeded() { 2326 if (mFindListener == null) { 2327 mFindListener = new FindListenerDistributor(); 2328 mProvider.setFindListener(mFindListener); 2329 } 2330 } 2331 2332 private void ensureProviderCreated() { 2333 checkThread(); 2334 if (mProvider == null) { 2335 // As this can get called during the base class constructor chain, pass the minimum 2336 // number of dependencies here; the rest are deferred to init(). 2337 mProvider = getFactory().createWebView(this, new PrivateAccess()); 2338 } 2339 } 2340 2341 private static WebViewFactoryProvider getFactory() { 2342 return WebViewFactory.getProvider(); 2343 } 2344 2345 private final Looper mWebViewThread = Looper.myLooper(); 2346 2347 private void checkThread() { 2348 // Ignore mWebViewThread == null because this can be called during in the super class 2349 // constructor, before this class's own constructor has even started. 2350 if (mWebViewThread != null && Looper.myLooper() != mWebViewThread) { 2351 Throwable throwable = new Throwable( 2352 "A WebView method was called on thread '" + 2353 Thread.currentThread().getName() + "'. " + 2354 "All WebView methods must be called on the same thread. " + 2355 "(Expected Looper " + mWebViewThread + " called on " + Looper.myLooper() + 2356 ", FYI main Looper is " + Looper.getMainLooper() + ")"); 2357 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 2358 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 2359 2360 if (sEnforceThreadChecking) { 2361 throw new RuntimeException(throwable); 2362 } 2363 } 2364 } 2365 2366 //------------------------------------------------------------------------- 2367 // Override View methods 2368 //------------------------------------------------------------------------- 2369 2370 // TODO: Add a test that enumerates all methods in ViewDelegte & ScrollDelegate, and ensures 2371 // there's a corresponding override (or better, caller) for each of them in here. 2372 2373 @Override 2374 protected void onAttachedToWindow() { 2375 super.onAttachedToWindow(); 2376 mProvider.getViewDelegate().onAttachedToWindow(); 2377 } 2378 2379 /** @hide */ 2380 @Override 2381 protected void onDetachedFromWindowInternal() { 2382 mProvider.getViewDelegate().onDetachedFromWindow(); 2383 super.onDetachedFromWindowInternal(); 2384 } 2385 2386 @Override 2387 public void setLayoutParams(ViewGroup.LayoutParams params) { 2388 mProvider.getViewDelegate().setLayoutParams(params); 2389 } 2390 2391 @Override 2392 public void setOverScrollMode(int mode) { 2393 super.setOverScrollMode(mode); 2394 // This method may be called in the constructor chain, before the WebView provider is 2395 // created. 2396 ensureProviderCreated(); 2397 mProvider.getViewDelegate().setOverScrollMode(mode); 2398 } 2399 2400 @Override 2401 public void setScrollBarStyle(int style) { 2402 mProvider.getViewDelegate().setScrollBarStyle(style); 2403 super.setScrollBarStyle(style); 2404 } 2405 2406 @Override 2407 protected int computeHorizontalScrollRange() { 2408 return mProvider.getScrollDelegate().computeHorizontalScrollRange(); 2409 } 2410 2411 @Override 2412 protected int computeHorizontalScrollOffset() { 2413 return mProvider.getScrollDelegate().computeHorizontalScrollOffset(); 2414 } 2415 2416 @Override 2417 protected int computeVerticalScrollRange() { 2418 return mProvider.getScrollDelegate().computeVerticalScrollRange(); 2419 } 2420 2421 @Override 2422 protected int computeVerticalScrollOffset() { 2423 return mProvider.getScrollDelegate().computeVerticalScrollOffset(); 2424 } 2425 2426 @Override 2427 protected int computeVerticalScrollExtent() { 2428 return mProvider.getScrollDelegate().computeVerticalScrollExtent(); 2429 } 2430 2431 @Override 2432 public void computeScroll() { 2433 mProvider.getScrollDelegate().computeScroll(); 2434 } 2435 2436 @Override 2437 public boolean onHoverEvent(MotionEvent event) { 2438 return mProvider.getViewDelegate().onHoverEvent(event); 2439 } 2440 2441 @Override 2442 public boolean onTouchEvent(MotionEvent event) { 2443 return mProvider.getViewDelegate().onTouchEvent(event); 2444 } 2445 2446 @Override 2447 public boolean onGenericMotionEvent(MotionEvent event) { 2448 return mProvider.getViewDelegate().onGenericMotionEvent(event); 2449 } 2450 2451 @Override 2452 public boolean onTrackballEvent(MotionEvent event) { 2453 return mProvider.getViewDelegate().onTrackballEvent(event); 2454 } 2455 2456 @Override 2457 public boolean onKeyDown(int keyCode, KeyEvent event) { 2458 return mProvider.getViewDelegate().onKeyDown(keyCode, event); 2459 } 2460 2461 @Override 2462 public boolean onKeyUp(int keyCode, KeyEvent event) { 2463 return mProvider.getViewDelegate().onKeyUp(keyCode, event); 2464 } 2465 2466 @Override 2467 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2468 return mProvider.getViewDelegate().onKeyMultiple(keyCode, repeatCount, event); 2469 } 2470 2471 /* 2472 TODO: These are not currently implemented in WebViewClassic, but it seems inconsistent not 2473 to be delegating them too. 2474 2475 @Override 2476 public boolean onKeyPreIme(int keyCode, KeyEvent event) { 2477 return mProvider.getViewDelegate().onKeyPreIme(keyCode, event); 2478 } 2479 @Override 2480 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2481 return mProvider.getViewDelegate().onKeyLongPress(keyCode, event); 2482 } 2483 @Override 2484 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2485 return mProvider.getViewDelegate().onKeyShortcut(keyCode, event); 2486 } 2487 */ 2488 2489 @Override 2490 public AccessibilityNodeProvider getAccessibilityNodeProvider() { 2491 AccessibilityNodeProvider provider = 2492 mProvider.getViewDelegate().getAccessibilityNodeProvider(); 2493 return provider == null ? super.getAccessibilityNodeProvider() : provider; 2494 } 2495 2496 @Deprecated 2497 @Override 2498 public boolean shouldDelayChildPressedState() { 2499 return mProvider.getViewDelegate().shouldDelayChildPressedState(); 2500 } 2501 2502 public CharSequence getAccessibilityClassName() { 2503 return WebView.class.getName(); 2504 } 2505 2506 @Override 2507 public void onProvideVirtualStructure(ViewStructure structure) { 2508 mProvider.getViewDelegate().onProvideVirtualStructure(structure); 2509 } 2510 2511 /** @hide */ 2512 @Override 2513 public void onInitializeAccessibilityNodeInfoInternal(AccessibilityNodeInfo info) { 2514 super.onInitializeAccessibilityNodeInfoInternal(info); 2515 mProvider.getViewDelegate().onInitializeAccessibilityNodeInfo(info); 2516 } 2517 2518 /** @hide */ 2519 @Override 2520 public void onInitializeAccessibilityEventInternal(AccessibilityEvent event) { 2521 super.onInitializeAccessibilityEventInternal(event); 2522 mProvider.getViewDelegate().onInitializeAccessibilityEvent(event); 2523 } 2524 2525 /** @hide */ 2526 @Override 2527 public boolean performAccessibilityActionInternal(int action, Bundle arguments) { 2528 return mProvider.getViewDelegate().performAccessibilityAction(action, arguments); 2529 } 2530 2531 /** @hide */ 2532 @Override 2533 protected void onDrawVerticalScrollBar(Canvas canvas, Drawable scrollBar, 2534 int l, int t, int r, int b) { 2535 mProvider.getViewDelegate().onDrawVerticalScrollBar(canvas, scrollBar, l, t, r, b); 2536 } 2537 2538 @Override 2539 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, boolean clampedY) { 2540 mProvider.getViewDelegate().onOverScrolled(scrollX, scrollY, clampedX, clampedY); 2541 } 2542 2543 @Override 2544 protected void onWindowVisibilityChanged(int visibility) { 2545 super.onWindowVisibilityChanged(visibility); 2546 mProvider.getViewDelegate().onWindowVisibilityChanged(visibility); 2547 } 2548 2549 @Override 2550 protected void onDraw(Canvas canvas) { 2551 mProvider.getViewDelegate().onDraw(canvas); 2552 } 2553 2554 @Override 2555 public boolean performLongClick() { 2556 return mProvider.getViewDelegate().performLongClick(); 2557 } 2558 2559 @Override 2560 protected void onConfigurationChanged(Configuration newConfig) { 2561 mProvider.getViewDelegate().onConfigurationChanged(newConfig); 2562 } 2563 2564 @Override 2565 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 2566 return mProvider.getViewDelegate().onCreateInputConnection(outAttrs); 2567 } 2568 2569 @Override 2570 public boolean onDragEvent(DragEvent event) { 2571 return mProvider.getViewDelegate().onDragEvent(event); 2572 } 2573 2574 @Override 2575 protected void onVisibilityChanged(View changedView, int visibility) { 2576 super.onVisibilityChanged(changedView, visibility); 2577 // This method may be called in the constructor chain, before the WebView provider is 2578 // created. 2579 ensureProviderCreated(); 2580 mProvider.getViewDelegate().onVisibilityChanged(changedView, visibility); 2581 } 2582 2583 @Override 2584 public void onWindowFocusChanged(boolean hasWindowFocus) { 2585 mProvider.getViewDelegate().onWindowFocusChanged(hasWindowFocus); 2586 super.onWindowFocusChanged(hasWindowFocus); 2587 } 2588 2589 @Override 2590 protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { 2591 mProvider.getViewDelegate().onFocusChanged(focused, direction, previouslyFocusedRect); 2592 super.onFocusChanged(focused, direction, previouslyFocusedRect); 2593 } 2594 2595 /** @hide */ 2596 @Override 2597 protected boolean setFrame(int left, int top, int right, int bottom) { 2598 return mProvider.getViewDelegate().setFrame(left, top, right, bottom); 2599 } 2600 2601 @Override 2602 protected void onSizeChanged(int w, int h, int ow, int oh) { 2603 super.onSizeChanged(w, h, ow, oh); 2604 mProvider.getViewDelegate().onSizeChanged(w, h, ow, oh); 2605 } 2606 2607 @Override 2608 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 2609 super.onScrollChanged(l, t, oldl, oldt); 2610 mProvider.getViewDelegate().onScrollChanged(l, t, oldl, oldt); 2611 } 2612 2613 @Override 2614 public boolean dispatchKeyEvent(KeyEvent event) { 2615 return mProvider.getViewDelegate().dispatchKeyEvent(event); 2616 } 2617 2618 @Override 2619 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 2620 return mProvider.getViewDelegate().requestFocus(direction, previouslyFocusedRect); 2621 } 2622 2623 @Override 2624 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 2625 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 2626 mProvider.getViewDelegate().onMeasure(widthMeasureSpec, heightMeasureSpec); 2627 } 2628 2629 @Override 2630 public boolean requestChildRectangleOnScreen(View child, Rect rect, boolean immediate) { 2631 return mProvider.getViewDelegate().requestChildRectangleOnScreen(child, rect, immediate); 2632 } 2633 2634 @Override 2635 public void setBackgroundColor(int color) { 2636 mProvider.getViewDelegate().setBackgroundColor(color); 2637 } 2638 2639 @Override 2640 public void setLayerType(int layerType, Paint paint) { 2641 super.setLayerType(layerType, paint); 2642 mProvider.getViewDelegate().setLayerType(layerType, paint); 2643 } 2644 2645 @Override 2646 protected void dispatchDraw(Canvas canvas) { 2647 mProvider.getViewDelegate().preDispatchDraw(canvas); 2648 super.dispatchDraw(canvas); 2649 } 2650 2651 @Override 2652 public void onStartTemporaryDetach() { 2653 super.onStartTemporaryDetach(); 2654 mProvider.getViewDelegate().onStartTemporaryDetach(); 2655 } 2656 2657 @Override 2658 public void onFinishTemporaryDetach() { 2659 super.onFinishTemporaryDetach(); 2660 mProvider.getViewDelegate().onFinishTemporaryDetach(); 2661 } 2662 2663 @Override 2664 public Handler getHandler() { 2665 return mProvider.getViewDelegate().getHandler(super.getHandler()); 2666 } 2667 2668 @Override 2669 public View findFocus() { 2670 return mProvider.getViewDelegate().findFocus(super.findFocus()); 2671 } 2672 2673 /** 2674 * Receive the result from a previous call to {@link #startActivityForResult(Intent, int)}. 2675 * 2676 * @param requestCode The integer request code originally supplied to 2677 * startActivityForResult(), allowing you to identify who this 2678 * result came from. 2679 * @param resultCode The integer result code returned by the child activity 2680 * through its setResult(). 2681 * @param data An Intent, which can return result data to the caller 2682 * (various data can be attached to Intent "extras"). 2683 * @hide 2684 */ 2685 @Override 2686 public void onActivityResult(int requestCode, int resultCode, Intent data) { 2687 mProvider.getViewDelegate().onActivityResult(requestCode, resultCode, data); 2688 } 2689 2690 /** @hide */ 2691 @Override 2692 protected void encodeProperties(@NonNull ViewHierarchyEncoder encoder) { 2693 super.encodeProperties(encoder); 2694 2695 checkThread(); 2696 encoder.addProperty("webview:contentHeight", mProvider.getContentHeight()); 2697 encoder.addProperty("webview:contentWidth", mProvider.getContentWidth()); 2698 encoder.addProperty("webview:scale", mProvider.getScale()); 2699 encoder.addProperty("webview:title", mProvider.getTitle()); 2700 encoder.addProperty("webview:url", mProvider.getUrl()); 2701 encoder.addProperty("webview:originalUrl", mProvider.getOriginalUrl()); 2702 } 2703} 2704