WebView.java revision 90b48b2cde42d7acab99bb065fe6ce4468a0ef2f
1/* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package android.webkit; 18 19import android.annotation.Widget; 20import android.content.Context; 21import android.content.res.Configuration; 22import android.graphics.Bitmap; 23import android.graphics.Canvas; 24import android.graphics.Paint; 25import android.graphics.Picture; 26import android.graphics.Rect; 27import android.graphics.drawable.Drawable; 28import android.net.http.SslCertificate; 29import android.os.Build; 30import android.os.Bundle; 31import android.os.Looper; 32import android.os.Message; 33import android.os.StrictMode; 34import android.print.PrintDocumentAdapter; 35import android.util.AttributeSet; 36import android.util.Log; 37import android.view.KeyEvent; 38import android.view.MotionEvent; 39import android.view.View; 40import android.view.ViewDebug; 41import android.view.ViewGroup; 42import android.view.ViewTreeObserver; 43import android.view.accessibility.AccessibilityEvent; 44import android.view.accessibility.AccessibilityNodeInfo; 45import android.view.accessibility.AccessibilityNodeProvider; 46import android.view.inputmethod.EditorInfo; 47import android.view.inputmethod.InputConnection; 48import android.widget.AbsoluteLayout; 49 50import java.io.BufferedWriter; 51import java.io.File; 52import java.io.OutputStream; 53import java.util.Map; 54 55/** 56 * <p>A View that displays web pages. This class is the basis upon which you 57 * can roll your own web browser or simply display some online content within your Activity. 58 * It uses the WebKit rendering engine to display 59 * web pages and includes methods to navigate forward and backward 60 * through a history, zoom in and out, perform text searches and more.</p> 61 * <p>To enable the built-in zoom, set 62 * {@link #getSettings() WebSettings}.{@link WebSettings#setBuiltInZoomControls(boolean)} 63 * (introduced in API level {@link android.os.Build.VERSION_CODES#CUPCAKE}). 64 * <p>Note that, in order for your Activity to access the Internet and load web pages 65 * in a WebView, you must add the {@code INTERNET} permissions to your 66 * Android Manifest file:</p> 67 * <pre><uses-permission android:name="android.permission.INTERNET" /></pre> 68 * 69 * <p>This must be a child of the <a 70 * href="{@docRoot}guide/topics/manifest/manifest-element.html">{@code <manifest>}</a> 71 * element.</p> 72 * 73 * <p>For more information, read 74 * <a href="{@docRoot}guide/webapps/webview.html">Building Web Apps in WebView</a>.</p> 75 * 76 * <h3>Basic usage</h3> 77 * 78 * <p>By default, a WebView provides no browser-like widgets, does not 79 * enable JavaScript and web page errors are ignored. If your goal is only 80 * to display some HTML as a part of your UI, this is probably fine; 81 * the user won't need to interact with the web page beyond reading 82 * it, and the web page won't need to interact with the user. If you 83 * actually want a full-blown web browser, then you probably want to 84 * invoke the Browser application with a URL Intent rather than show it 85 * with a WebView. For example: 86 * <pre> 87 * Uri uri = Uri.parse("http://www.example.com"); 88 * Intent intent = new Intent(Intent.ACTION_VIEW, uri); 89 * startActivity(intent); 90 * </pre> 91 * <p>See {@link android.content.Intent} for more information.</p> 92 * 93 * <p>To provide a WebView in your own Activity, include a {@code <WebView>} in your layout, 94 * or set the entire Activity window as a WebView during {@link 95 * android.app.Activity#onCreate(Bundle) onCreate()}:</p> 96 * <pre class="prettyprint"> 97 * WebView webview = new WebView(this); 98 * setContentView(webview); 99 * </pre> 100 * 101 * <p>Then load the desired web page:</p> 102 * <pre> 103 * // Simplest usage: note that an exception will NOT be thrown 104 * // if there is an error loading this page (see below). 105 * webview.loadUrl("http://slashdot.org/"); 106 * 107 * // OR, you can also load from an HTML string: 108 * String summary = "<html><body>You scored <b>192</b> points.</body></html>"; 109 * webview.loadData(summary, "text/html", null); 110 * // ... although note that there are restrictions on what this HTML can do. 111 * // See the JavaDocs for {@link #loadData(String,String,String) loadData()} and {@link 112 * #loadDataWithBaseURL(String,String,String,String,String) loadDataWithBaseURL()} for more info. 113 * </pre> 114 * 115 * <p>A WebView has several customization points where you can add your 116 * own behavior. These are:</p> 117 * 118 * <ul> 119 * <li>Creating and setting a {@link android.webkit.WebChromeClient} subclass. 120 * This class is called when something that might impact a 121 * browser UI happens, for instance, progress updates and 122 * JavaScript alerts are sent here (see <a 123 * href="{@docRoot}guide/developing/debug-tasks.html#DebuggingWebPages">Debugging Tasks</a>). 124 * </li> 125 * <li>Creating and setting a {@link android.webkit.WebViewClient} subclass. 126 * It will be called when things happen that impact the 127 * rendering of the content, eg, errors or form submissions. You 128 * can also intercept URL loading here (via {@link 129 * android.webkit.WebViewClient#shouldOverrideUrlLoading(WebView,String) 130 * shouldOverrideUrlLoading()}).</li> 131 * <li>Modifying the {@link android.webkit.WebSettings}, such as 132 * enabling JavaScript with {@link android.webkit.WebSettings#setJavaScriptEnabled(boolean) 133 * setJavaScriptEnabled()}. </li> 134 * <li>Injecting Java objects into the WebView using the 135 * {@link android.webkit.WebView#addJavascriptInterface} method. This 136 * method allows you to inject Java objects into a page's JavaScript 137 * context, so that they can be accessed by JavaScript in the page.</li> 138 * </ul> 139 * 140 * <p>Here's a more complicated example, showing error handling, 141 * settings, and progress notification:</p> 142 * 143 * <pre class="prettyprint"> 144 * // Let's display the progress in the activity title bar, like the 145 * // browser app does. 146 * getWindow().requestFeature(Window.FEATURE_PROGRESS); 147 * 148 * webview.getSettings().setJavaScriptEnabled(true); 149 * 150 * final Activity activity = this; 151 * webview.setWebChromeClient(new WebChromeClient() { 152 * public void onProgressChanged(WebView view, int progress) { 153 * // Activities and WebViews measure progress with different scales. 154 * // The progress meter will automatically disappear when we reach 100% 155 * activity.setProgress(progress * 1000); 156 * } 157 * }); 158 * webview.setWebViewClient(new WebViewClient() { 159 * public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { 160 * Toast.makeText(activity, "Oh no! " + description, Toast.LENGTH_SHORT).show(); 161 * } 162 * }); 163 * 164 * webview.loadUrl("http://slashdot.org/"); 165 * </pre> 166 * 167 * <h3>Cookie and window management</h3> 168 * 169 * <p>For obvious security reasons, your application has its own 170 * cache, cookie store etc.—it does not share the Browser 171 * application's data. 172 * </p> 173 * 174 * <p>By default, requests by the HTML to open new windows are 175 * ignored. This is true whether they be opened by JavaScript or by 176 * the target attribute on a link. You can customize your 177 * {@link WebChromeClient} to provide your own behaviour for opening multiple windows, 178 * and render them in whatever manner you want.</p> 179 * 180 * <p>The standard behavior for an Activity is to be destroyed and 181 * recreated when the device orientation or any other configuration changes. This will cause 182 * the WebView to reload the current page. If you don't want that, you 183 * can set your Activity to handle the {@code orientation} and {@code keyboardHidden} 184 * changes, and then just leave the WebView alone. It'll automatically 185 * re-orient itself as appropriate. Read <a 186 * href="{@docRoot}guide/topics/resources/runtime-changes.html">Handling Runtime Changes</a> for 187 * more information about how to handle configuration changes during runtime.</p> 188 * 189 * 190 * <h3>Building web pages to support different screen densities</h3> 191 * 192 * <p>The screen density of a device is based on the screen resolution. A screen with low density 193 * has fewer available pixels per inch, where a screen with high density 194 * has more — sometimes significantly more — pixels per inch. The density of a 195 * screen is important because, other things being equal, a UI element (such as a button) whose 196 * height and width are defined in terms of screen pixels will appear larger on the lower density 197 * screen and smaller on the higher density screen. 198 * For simplicity, Android collapses all actual screen densities into three generalized densities: 199 * high, medium, and low.</p> 200 * <p>By default, WebView scales a web page so that it is drawn at a size that matches the default 201 * appearance on a medium density screen. So, it applies 1.5x scaling on a high density screen 202 * (because its pixels are smaller) and 0.75x scaling on a low density screen (because its pixels 203 * are bigger). 204 * Starting with API level {@link android.os.Build.VERSION_CODES#ECLAIR}, WebView supports DOM, CSS, 205 * and meta tag features to help you (as a web developer) target screens with different screen 206 * densities.</p> 207 * <p>Here's a summary of the features you can use to handle different screen densities:</p> 208 * <ul> 209 * <li>The {@code window.devicePixelRatio} DOM property. The value of this property specifies the 210 * default scaling factor used for the current device. For example, if the value of {@code 211 * window.devicePixelRatio} is "1.0", then the device is considered a medium density (mdpi) device 212 * and default scaling is not applied to the web page; if the value is "1.5", then the device is 213 * considered a high density device (hdpi) and the page content is scaled 1.5x; if the 214 * value is "0.75", then the device is considered a low density device (ldpi) and the content is 215 * scaled 0.75x.</li> 216 * <li>The {@code -webkit-device-pixel-ratio} CSS media query. Use this to specify the screen 217 * densities for which this style sheet is to be used. The corresponding value should be either 218 * "0.75", "1", or "1.5", to indicate that the styles are for devices with low density, medium 219 * density, or high density screens, respectively. For example: 220 * <pre> 221 * <link rel="stylesheet" media="screen and (-webkit-device-pixel-ratio:1.5)" href="hdpi.css" /></pre> 222 * <p>The {@code hdpi.css} stylesheet is only used for devices with a screen pixel ration of 1.5, 223 * which is the high density pixel ratio.</p> 224 * </li> 225 * 226 * <h3>HTML5 Video support</h3> 227 * 228 * <p>In order to support inline HTML5 video in your application, you need to have hardware 229 * acceleration turned on, and set a {@link android.webkit.WebChromeClient}. For full screen support, 230 * implementations of {@link WebChromeClient#onShowCustomView(View, WebChromeClient.CustomViewCallback)} 231 * and {@link WebChromeClient#onHideCustomView()} are required, 232 * {@link WebChromeClient#getVideoLoadingProgressView()} is optional. 233 * </p> 234 */ 235// Implementation notes. 236// The WebView is a thin API class that delegates its public API to a backend WebViewProvider 237// class instance. WebView extends {@link AbsoluteLayout} for backward compatibility reasons. 238// Methods are delegated to the provider implementation: all public API methods introduced in this 239// file are fully delegated, whereas public and protected methods from the View base classes are 240// only delegated where a specific need exists for them to do so. 241@Widget 242public class WebView extends AbsoluteLayout 243 implements ViewTreeObserver.OnGlobalFocusChangeListener, 244 ViewGroup.OnHierarchyChangeListener, ViewDebug.HierarchyHandler { 245 246 private static final String LOGTAG = "WebView"; 247 248 // Throwing an exception for incorrect thread usage if the 249 // build target is JB MR2 or newer. Defaults to false, and is 250 // set in the WebView constructor. 251 private static volatile boolean sEnforceThreadChecking = false; 252 253 /** 254 * Transportation object for returning WebView across thread boundaries. 255 */ 256 public class WebViewTransport { 257 private WebView mWebview; 258 259 /** 260 * Sets the WebView to the transportation object. 261 * 262 * @param webview the WebView to transport 263 */ 264 public synchronized void setWebView(WebView webview) { 265 mWebview = webview; 266 } 267 268 /** 269 * Gets the WebView object. 270 * 271 * @return the transported WebView object 272 */ 273 public synchronized WebView getWebView() { 274 return mWebview; 275 } 276 } 277 278 /** 279 * URI scheme for telephone number. 280 */ 281 public static final String SCHEME_TEL = "tel:"; 282 /** 283 * URI scheme for email address. 284 */ 285 public static final String SCHEME_MAILTO = "mailto:"; 286 /** 287 * URI scheme for map address. 288 */ 289 public static final String SCHEME_GEO = "geo:0,0?q="; 290 291 /** 292 * Interface to listen for find results. 293 */ 294 public interface FindListener { 295 /** 296 * Notifies the listener about progress made by a find operation. 297 * 298 * @param activeMatchOrdinal the zero-based ordinal of the currently selected match 299 * @param numberOfMatches how many matches have been found 300 * @param isDoneCounting whether the find operation has actually completed. The listener 301 * may be notified multiple times while the 302 * operation is underway, and the numberOfMatches 303 * value should not be considered final unless 304 * isDoneCounting is true. 305 */ 306 public void onFindResultReceived(int activeMatchOrdinal, int numberOfMatches, 307 boolean isDoneCounting); 308 } 309 310 /** 311 * Interface to listen for new pictures as they change. 312 * 313 * @deprecated This interface is now obsolete. 314 */ 315 @Deprecated 316 public interface PictureListener { 317 /** 318 * Used to provide notification that the WebView's picture has changed. 319 * See {@link WebView#capturePicture} for details of the picture. 320 * 321 * @param view the WebView that owns the picture 322 * @param picture the new picture. Applications targeting 323 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR2} or above 324 * will always receive a null Picture. 325 * @deprecated Deprecated due to internal changes. 326 */ 327 @Deprecated 328 public void onNewPicture(WebView view, Picture picture); 329 } 330 331 public static class HitTestResult { 332 /** 333 * Default HitTestResult, where the target is unknown. 334 */ 335 public static final int UNKNOWN_TYPE = 0; 336 /** 337 * @deprecated This type is no longer used. 338 */ 339 @Deprecated 340 public static final int ANCHOR_TYPE = 1; 341 /** 342 * HitTestResult for hitting a phone number. 343 */ 344 public static final int PHONE_TYPE = 2; 345 /** 346 * HitTestResult for hitting a map address. 347 */ 348 public static final int GEO_TYPE = 3; 349 /** 350 * HitTestResult for hitting an email address. 351 */ 352 public static final int EMAIL_TYPE = 4; 353 /** 354 * HitTestResult for hitting an HTML::img tag. 355 */ 356 public static final int IMAGE_TYPE = 5; 357 /** 358 * @deprecated This type is no longer used. 359 */ 360 @Deprecated 361 public static final int IMAGE_ANCHOR_TYPE = 6; 362 /** 363 * HitTestResult for hitting a HTML::a tag with src=http. 364 */ 365 public static final int SRC_ANCHOR_TYPE = 7; 366 /** 367 * HitTestResult for hitting a HTML::a tag with src=http + HTML::img. 368 */ 369 public static final int SRC_IMAGE_ANCHOR_TYPE = 8; 370 /** 371 * HitTestResult for hitting an edit text area. 372 */ 373 public static final int EDIT_TEXT_TYPE = 9; 374 375 private int mType; 376 private String mExtra; 377 378 /** 379 * @hide Only for use by WebViewProvider implementations 380 */ 381 public HitTestResult() { 382 mType = UNKNOWN_TYPE; 383 } 384 385 /** 386 * @hide Only for use by WebViewProvider implementations 387 */ 388 public void setType(int type) { 389 mType = type; 390 } 391 392 /** 393 * @hide Only for use by WebViewProvider implementations 394 */ 395 public void setExtra(String extra) { 396 mExtra = extra; 397 } 398 399 /** 400 * Gets the type of the hit test result. See the XXX_TYPE constants 401 * defined in this class. 402 * 403 * @return the type of the hit test result 404 */ 405 public int getType() { 406 return mType; 407 } 408 409 /** 410 * Gets additional type-dependant information about the result. See 411 * {@link WebView#getHitTestResult()} for details. May either be null 412 * or contain extra information about this result. 413 * 414 * @return additional type-dependant information about the result 415 */ 416 public String getExtra() { 417 return mExtra; 418 } 419 } 420 421 /** 422 * Constructs a new WebView with a Context object. 423 * 424 * @param context a Context object used to access application assets 425 */ 426 public WebView(Context context) { 427 this(context, null); 428 } 429 430 /** 431 * Constructs a new WebView with layout parameters. 432 * 433 * @param context a Context object used to access application assets 434 * @param attrs an AttributeSet passed to our parent 435 */ 436 public WebView(Context context, AttributeSet attrs) { 437 this(context, attrs, com.android.internal.R.attr.webViewStyle); 438 } 439 440 /** 441 * Constructs a new WebView with layout parameters and a default style. 442 * 443 * @param context a Context object used to access application assets 444 * @param attrs an AttributeSet passed to our parent 445 * @param defStyleAttr an attribute in the current theme that contains a 446 * reference to a style resource that supplies default values for 447 * the view. Can be 0 to not look for defaults. 448 */ 449 public WebView(Context context, AttributeSet attrs, int defStyleAttr) { 450 this(context, attrs, defStyleAttr, 0); 451 } 452 453 /** 454 * Constructs a new WebView with layout parameters and a default style. 455 * 456 * @param context a Context object used to access application assets 457 * @param attrs an AttributeSet passed to our parent 458 * @param defStyleAttr an attribute in the current theme that contains a 459 * reference to a style resource that supplies default values for 460 * the view. Can be 0 to not look for defaults. 461 * @param defStyleRes a resource identifier of a style resource that 462 * supplies default values for the view, used only if 463 * defStyleAttr is 0 or can not be found in the theme. Can be 0 464 * to not look for defaults. 465 */ 466 public WebView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 467 this(context, attrs, defStyleAttr, defStyleRes, null, false); 468 } 469 470 /** 471 * Constructs a new WebView with layout parameters and a default style. 472 * 473 * @param context a Context object used to access application assets 474 * @param attrs an AttributeSet passed to our parent 475 * @param defStyleAttr an attribute in the current theme that contains a 476 * reference to a style resource that supplies default values for 477 * the view. Can be 0 to not look for defaults. 478 * @param privateBrowsing whether this WebView will be initialized in 479 * private mode 480 * 481 * @deprecated Private browsing is no longer supported directly via 482 * WebView and will be removed in a future release. Prefer using 483 * {@link WebSettings}, {@link WebViewDatabase}, {@link CookieManager} 484 * and {@link WebStorage} for fine-grained control of privacy data. 485 */ 486 @Deprecated 487 public WebView(Context context, AttributeSet attrs, int defStyleAttr, 488 boolean privateBrowsing) { 489 this(context, attrs, defStyleAttr, 0, null, privateBrowsing); 490 } 491 492 /** 493 * Constructs a new WebView with layout parameters, a default style and a set 494 * of custom Javscript interfaces to be added to this WebView at initialization 495 * time. This guarantees that these interfaces will be available when the JS 496 * context is initialized. 497 * 498 * @param context a Context object used to access application assets 499 * @param attrs an AttributeSet passed to our parent 500 * @param defStyleAttr an attribute in the current theme that contains a 501 * reference to a style resource that supplies default values for 502 * the view. Can be 0 to not look for defaults. 503 * @param javaScriptInterfaces a Map of interface names, as keys, and 504 * object implementing those interfaces, as 505 * values 506 * @param privateBrowsing whether this WebView will be initialized in 507 * private mode 508 * @hide This is used internally by dumprendertree, as it requires the javaScript interfaces to 509 * be added synchronously, before a subsequent loadUrl call takes effect. 510 */ 511 protected WebView(Context context, AttributeSet attrs, int defStyleAttr, 512 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 513 this(context, attrs, defStyleAttr, 0, javaScriptInterfaces, privateBrowsing); 514 } 515 516 /** 517 * @hide 518 */ 519 @SuppressWarnings("deprecation") // for super() call into deprecated base class constructor. 520 protected WebView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes, 521 Map<String, Object> javaScriptInterfaces, boolean privateBrowsing) { 522 super(context, attrs, defStyleAttr, defStyleRes); 523 if (context == null) { 524 throw new IllegalArgumentException("Invalid context argument"); 525 } 526 sEnforceThreadChecking = context.getApplicationInfo().targetSdkVersion >= 527 Build.VERSION_CODES.JELLY_BEAN_MR2; 528 checkThread(); 529 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "WebView<init>"); 530 531 ensureProviderCreated(); 532 mProvider.init(javaScriptInterfaces, privateBrowsing); 533 // Post condition of creating a webview is the CookieSyncManager instance exists. 534 CookieSyncManager.createInstance(getContext()); 535 } 536 537 /** 538 * Specifies whether the horizontal scrollbar has overlay style. 539 * 540 * @param overlay true if horizontal scrollbar should have overlay style 541 */ 542 public void setHorizontalScrollbarOverlay(boolean overlay) { 543 checkThread(); 544 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setHorizontalScrollbarOverlay=" + overlay); 545 mProvider.setHorizontalScrollbarOverlay(overlay); 546 } 547 548 /** 549 * Specifies whether the vertical scrollbar has overlay style. 550 * 551 * @param overlay true if vertical scrollbar should have overlay style 552 */ 553 public void setVerticalScrollbarOverlay(boolean overlay) { 554 checkThread(); 555 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setVerticalScrollbarOverlay=" + overlay); 556 mProvider.setVerticalScrollbarOverlay(overlay); 557 } 558 559 /** 560 * Gets whether horizontal scrollbar has overlay style. 561 * 562 * @return true if horizontal scrollbar has overlay style 563 */ 564 public boolean overlayHorizontalScrollbar() { 565 checkThread(); 566 return mProvider.overlayHorizontalScrollbar(); 567 } 568 569 /** 570 * Gets whether vertical scrollbar has overlay style. 571 * 572 * @return true if vertical scrollbar has overlay style 573 */ 574 public boolean overlayVerticalScrollbar() { 575 checkThread(); 576 return mProvider.overlayVerticalScrollbar(); 577 } 578 579 /** 580 * Gets the visible height (in pixels) of the embedded title bar (if any). 581 * 582 * @deprecated This method is now obsolete. 583 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 584 */ 585 public int getVisibleTitleHeight() { 586 checkThread(); 587 return mProvider.getVisibleTitleHeight(); 588 } 589 590 /** 591 * Gets the SSL certificate for the main top-level page or null if there is 592 * no certificate (the site is not secure). 593 * 594 * @return the SSL certificate for the main top-level page 595 */ 596 public SslCertificate getCertificate() { 597 checkThread(); 598 return mProvider.getCertificate(); 599 } 600 601 /** 602 * Sets the SSL certificate for the main top-level page. 603 * 604 * @deprecated Calling this function has no useful effect, and will be 605 * ignored in future releases. 606 */ 607 @Deprecated 608 public void setCertificate(SslCertificate certificate) { 609 checkThread(); 610 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setCertificate=" + certificate); 611 mProvider.setCertificate(certificate); 612 } 613 614 //------------------------------------------------------------------------- 615 // Methods called by activity 616 //------------------------------------------------------------------------- 617 618 /** 619 * Sets a username and password pair for the specified host. This data is 620 * used by the Webview to autocomplete username and password fields in web 621 * forms. Note that this is unrelated to the credentials used for HTTP 622 * authentication. 623 * 624 * @param host the host that required the credentials 625 * @param username the username for the given host 626 * @param password the password for the given host 627 * @see WebViewDatabase#clearUsernamePassword 628 * @see WebViewDatabase#hasUsernamePassword 629 * @deprecated Saving passwords in WebView will not be supported in future versions. 630 */ 631 @Deprecated 632 public void savePassword(String host, String username, String password) { 633 checkThread(); 634 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "savePassword=" + host); 635 mProvider.savePassword(host, username, password); 636 } 637 638 /** 639 * Stores HTTP authentication credentials for a given host and realm. This 640 * method is intended to be used with 641 * {@link WebViewClient#onReceivedHttpAuthRequest}. 642 * 643 * @param host the host to which the credentials apply 644 * @param realm the realm to which the credentials apply 645 * @param username the username 646 * @param password the password 647 * @see #getHttpAuthUsernamePassword 648 * @see WebViewDatabase#hasHttpAuthUsernamePassword 649 * @see WebViewDatabase#clearHttpAuthUsernamePassword 650 */ 651 public void setHttpAuthUsernamePassword(String host, String realm, 652 String username, String password) { 653 checkThread(); 654 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setHttpAuthUsernamePassword=" + host); 655 mProvider.setHttpAuthUsernamePassword(host, realm, username, password); 656 } 657 658 /** 659 * Retrieves HTTP authentication credentials for a given host and realm. 660 * This method is intended to be used with 661 * {@link WebViewClient#onReceivedHttpAuthRequest}. 662 * 663 * @param host the host to which the credentials apply 664 * @param realm the realm to which the credentials apply 665 * @return the credentials as a String array, if found. The first element 666 * is the username and the second element is the password. Null if 667 * no credentials are found. 668 * @see #setHttpAuthUsernamePassword 669 * @see WebViewDatabase#hasHttpAuthUsernamePassword 670 * @see WebViewDatabase#clearHttpAuthUsernamePassword 671 */ 672 public String[] getHttpAuthUsernamePassword(String host, String realm) { 673 checkThread(); 674 return mProvider.getHttpAuthUsernamePassword(host, realm); 675 } 676 677 /** 678 * Destroys the internal state of this WebView. This method should be called 679 * after this WebView has been removed from the view system. No other 680 * methods may be called on this WebView after destroy. 681 */ 682 public void destroy() { 683 checkThread(); 684 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "destroy"); 685 mProvider.destroy(); 686 } 687 688 /** 689 * Enables platform notifications of data state and proxy changes. 690 * Notifications are enabled by default. 691 * 692 * @deprecated This method is now obsolete. 693 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 694 */ 695 @Deprecated 696 public static void enablePlatformNotifications() { 697 checkThread(); 698 getFactory().getStatics().setPlatformNotificationsEnabled(true); 699 } 700 701 /** 702 * Disables platform notifications of data state and proxy changes. 703 * Notifications are enabled by default. 704 * 705 * @deprecated This method is now obsolete. 706 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 707 */ 708 @Deprecated 709 public static void disablePlatformNotifications() { 710 checkThread(); 711 getFactory().getStatics().setPlatformNotificationsEnabled(false); 712 } 713 714 /** 715 * Used only by internal tests to free up memory. 716 * 717 * @hide 718 */ 719 public static void freeMemoryForTests() { 720 checkThread(); 721 getFactory().getStatics().freeMemoryForTests(); 722 } 723 724 /** 725 * Informs WebView of the network state. This is used to set 726 * the JavaScript property window.navigator.isOnline and 727 * generates the online/offline event as specified in HTML5, sec. 5.7.7 728 * 729 * @param networkUp a boolean indicating if network is available 730 */ 731 public void setNetworkAvailable(boolean networkUp) { 732 checkThread(); 733 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setNetworkAvailable=" + networkUp); 734 mProvider.setNetworkAvailable(networkUp); 735 } 736 737 /** 738 * Saves the state of this WebView used in 739 * {@link android.app.Activity#onSaveInstanceState}. Please note that this 740 * method no longer stores the display data for this WebView. The previous 741 * behavior could potentially leak files if {@link #restoreState} was never 742 * called. 743 * 744 * @param outState the Bundle to store this WebView's state 745 * @return the same copy of the back/forward list used to save the state. If 746 * saveState fails, the returned list will be null. 747 */ 748 public WebBackForwardList saveState(Bundle outState) { 749 checkThread(); 750 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "saveState"); 751 return mProvider.saveState(outState); 752 } 753 754 /** 755 * Saves the current display data to the Bundle given. Used in conjunction 756 * with {@link #saveState}. 757 * @param b a Bundle to store the display data 758 * @param dest the file to store the serialized picture data. Will be 759 * overwritten with this WebView's picture data. 760 * @return true if the picture was successfully saved 761 * @deprecated This method is now obsolete. 762 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 763 */ 764 @Deprecated 765 public boolean savePicture(Bundle b, final File dest) { 766 checkThread(); 767 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "savePicture=" + dest.getName()); 768 return mProvider.savePicture(b, dest); 769 } 770 771 /** 772 * Restores the display data that was saved in {@link #savePicture}. Used in 773 * conjunction with {@link #restoreState}. Note that this will not work if 774 * this WebView is hardware accelerated. 775 * 776 * @param b a Bundle containing the saved display data 777 * @param src the file where the picture data was stored 778 * @return true if the picture was successfully restored 779 * @deprecated This method is now obsolete. 780 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 781 */ 782 @Deprecated 783 public boolean restorePicture(Bundle b, File src) { 784 checkThread(); 785 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "restorePicture=" + src.getName()); 786 return mProvider.restorePicture(b, src); 787 } 788 789 /** 790 * Restores the state of this WebView from the given Bundle. This method is 791 * intended for use in {@link android.app.Activity#onRestoreInstanceState} 792 * and should be called to restore the state of this WebView. If 793 * it is called after this WebView has had a chance to build state (load 794 * pages, create a back/forward list, etc.) there may be undesirable 795 * side-effects. Please note that this method no longer restores the 796 * display data for this WebView. 797 * 798 * @param inState the incoming Bundle of state 799 * @return the restored back/forward list or null if restoreState failed 800 */ 801 public WebBackForwardList restoreState(Bundle inState) { 802 checkThread(); 803 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "restoreState"); 804 return mProvider.restoreState(inState); 805 } 806 807 /** 808 * Loads the given URL with the specified additional HTTP headers. 809 * 810 * @param url the URL of the resource to load 811 * @param additionalHttpHeaders the additional headers to be used in the 812 * HTTP request for this URL, specified as a map from name to 813 * value. Note that if this map contains any of the headers 814 * that are set by default by this WebView, such as those 815 * controlling caching, accept types or the User-Agent, their 816 * values may be overriden by this WebView's defaults. 817 */ 818 public void loadUrl(String url, Map<String, String> additionalHttpHeaders) { 819 checkThread(); 820 if (DebugFlags.TRACE_API) { 821 StringBuilder headers = new StringBuilder(); 822 if (additionalHttpHeaders != null) { 823 for (Map.Entry<String, String> entry : additionalHttpHeaders.entrySet()) { 824 headers.append(entry.getKey() + ":" + entry.getValue() + "\n"); 825 } 826 } 827 Log.d(LOGTAG, "loadUrl(extra headers)=" + url + "\n" + headers); 828 } 829 mProvider.loadUrl(url, additionalHttpHeaders); 830 } 831 832 /** 833 * Loads the given URL. 834 * 835 * @param url the URL of the resource to load 836 */ 837 public void loadUrl(String url) { 838 checkThread(); 839 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "loadUrl=" + url); 840 mProvider.loadUrl(url); 841 } 842 843 /** 844 * Loads the URL with postData using "POST" method into this WebView. If url 845 * is not a network URL, it will be loaded with {link 846 * {@link #loadUrl(String)} instead. 847 * 848 * @param url the URL of the resource to load 849 * @param postData the data will be passed to "POST" request, which must be 850 * be "application/x-www-form-urlencoded" encoded. 851 */ 852 public void postUrl(String url, byte[] postData) { 853 checkThread(); 854 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "postUrl=" + url); 855 mProvider.postUrl(url, postData); 856 } 857 858 /** 859 * Loads the given data into this WebView using a 'data' scheme URL. 860 * <p> 861 * Note that JavaScript's same origin policy means that script running in a 862 * page loaded using this method will be unable to access content loaded 863 * using any scheme other than 'data', including 'http(s)'. To avoid this 864 * restriction, use {@link 865 * #loadDataWithBaseURL(String,String,String,String,String) 866 * loadDataWithBaseURL()} with an appropriate base URL. 867 * <p> 868 * The encoding parameter specifies whether the data is base64 or URL 869 * encoded. If the data is base64 encoded, the value of the encoding 870 * parameter must be 'base64'. For all other values of the parameter, 871 * including null, it is assumed that the data uses ASCII encoding for 872 * octets inside the range of safe URL characters and use the standard %xx 873 * hex encoding of URLs for octets outside that range. For example, '#', 874 * '%', '\', '?' should be replaced by %23, %25, %27, %3f respectively. 875 * <p> 876 * The 'data' scheme URL formed by this method uses the default US-ASCII 877 * charset. If you need need to set a different charset, you should form a 878 * 'data' scheme URL which explicitly specifies a charset parameter in the 879 * mediatype portion of the URL and call {@link #loadUrl(String)} instead. 880 * Note that the charset obtained from the mediatype portion of a data URL 881 * always overrides that specified in the HTML or XML document itself. 882 * 883 * @param data a String of data in the given encoding 884 * @param mimeType the MIME type of the data, e.g. 'text/html' 885 * @param encoding the encoding of the data 886 */ 887 public void loadData(String data, String mimeType, String encoding) { 888 checkThread(); 889 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "loadData"); 890 mProvider.loadData(data, mimeType, encoding); 891 } 892 893 /** 894 * Loads the given data into this WebView, using baseUrl as the base URL for 895 * the content. The base URL is used both to resolve relative URLs and when 896 * applying JavaScript's same origin policy. The historyUrl is used for the 897 * history entry. 898 * <p> 899 * Note that content specified in this way can access local device files 900 * (via 'file' scheme URLs) only if baseUrl specifies a scheme other than 901 * 'http', 'https', 'ftp', 'ftps', 'about' or 'javascript'. 902 * <p> 903 * If the base URL uses the data scheme, this method is equivalent to 904 * calling {@link #loadData(String,String,String) loadData()} and the 905 * historyUrl is ignored, and the data will be treated as part of a data: URL. 906 * If the base URL uses any other scheme, then the data will be loaded into 907 * the WebView as a plain string (i.e. not part of a data URL) and any URL-encoded 908 * entities in the string will not be decoded. 909 * 910 * @param baseUrl the URL to use as the page's base URL. If null defaults to 911 * 'about:blank'. 912 * @param data a String of data in the given encoding 913 * @param mimeType the MIMEType of the data, e.g. 'text/html'. If null, 914 * defaults to 'text/html'. 915 * @param encoding the encoding of the data 916 * @param historyUrl the URL to use as the history entry. If null defaults 917 * to 'about:blank'. If non-null, this must be a valid URL. 918 */ 919 public void loadDataWithBaseURL(String baseUrl, String data, 920 String mimeType, String encoding, String historyUrl) { 921 checkThread(); 922 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "loadDataWithBaseURL=" + baseUrl); 923 mProvider.loadDataWithBaseURL(baseUrl, data, mimeType, encoding, historyUrl); 924 } 925 926 /** 927 * Asynchronously evaluates JavaScript in the context of the currently displayed page. 928 * If non-null, |resultCallback| will be invoked with any result returned from that 929 * execution. This method must be called on the UI thread and the callback will 930 * be made on the UI thread. 931 * 932 * @param script the JavaScript to execute. 933 * @param resultCallback A callback to be invoked when the script execution 934 * completes with the result of the execution (if any). 935 * May be null if no notificaion of the result is required. 936 */ 937 public void evaluateJavascript(String script, ValueCallback<String> resultCallback) { 938 checkThread(); 939 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "evaluateJavascript=" + script); 940 mProvider.evaluateJavaScript(script, resultCallback); 941 } 942 943 /** 944 * Saves the current view as a web archive. 945 * 946 * @param filename the filename where the archive should be placed 947 */ 948 public void saveWebArchive(String filename) { 949 checkThread(); 950 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "saveWebArchive=" + filename); 951 mProvider.saveWebArchive(filename); 952 } 953 954 /** 955 * Saves the current view as a web archive. 956 * 957 * @param basename the filename where the archive should be placed 958 * @param autoname if false, takes basename to be a file. If true, basename 959 * is assumed to be a directory in which a filename will be 960 * chosen according to the URL of the current page. 961 * @param callback called after the web archive has been saved. The 962 * parameter for onReceiveValue will either be the filename 963 * under which the file was saved, or null if saving the 964 * file failed. 965 */ 966 public void saveWebArchive(String basename, boolean autoname, ValueCallback<String> callback) { 967 checkThread(); 968 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "saveWebArchive(auto)=" + basename); 969 mProvider.saveWebArchive(basename, autoname, callback); 970 } 971 972 /** 973 * Stops the current load. 974 */ 975 public void stopLoading() { 976 checkThread(); 977 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "stopLoading"); 978 mProvider.stopLoading(); 979 } 980 981 /** 982 * Reloads the current URL. 983 */ 984 public void reload() { 985 checkThread(); 986 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "reload"); 987 mProvider.reload(); 988 } 989 990 /** 991 * Gets whether this WebView has a back history item. 992 * 993 * @return true iff this WebView has a back history item 994 */ 995 public boolean canGoBack() { 996 checkThread(); 997 return mProvider.canGoBack(); 998 } 999 1000 /** 1001 * Goes back in the history of this WebView. 1002 */ 1003 public void goBack() { 1004 checkThread(); 1005 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "goBack"); 1006 mProvider.goBack(); 1007 } 1008 1009 /** 1010 * Gets whether this WebView has a forward history item. 1011 * 1012 * @return true iff this Webview has a forward history item 1013 */ 1014 public boolean canGoForward() { 1015 checkThread(); 1016 return mProvider.canGoForward(); 1017 } 1018 1019 /** 1020 * Goes forward in the history of this WebView. 1021 */ 1022 public void goForward() { 1023 checkThread(); 1024 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "goForward"); 1025 mProvider.goForward(); 1026 } 1027 1028 /** 1029 * Gets whether the page can go back or forward the given 1030 * number of steps. 1031 * 1032 * @param steps the negative or positive number of steps to move the 1033 * history 1034 */ 1035 public boolean canGoBackOrForward(int steps) { 1036 checkThread(); 1037 return mProvider.canGoBackOrForward(steps); 1038 } 1039 1040 /** 1041 * Goes to the history item that is the number of steps away from 1042 * the current item. Steps is negative if backward and positive 1043 * if forward. 1044 * 1045 * @param steps the number of steps to take back or forward in the back 1046 * forward list 1047 */ 1048 public void goBackOrForward(int steps) { 1049 checkThread(); 1050 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "goBackOrForwad=" + steps); 1051 mProvider.goBackOrForward(steps); 1052 } 1053 1054 /** 1055 * Gets whether private browsing is enabled in this WebView. 1056 */ 1057 public boolean isPrivateBrowsingEnabled() { 1058 checkThread(); 1059 return mProvider.isPrivateBrowsingEnabled(); 1060 } 1061 1062 /** 1063 * Scrolls the contents of this WebView up by half the view size. 1064 * 1065 * @param top true to jump to the top of the page 1066 * @return true if the page was scrolled 1067 */ 1068 public boolean pageUp(boolean top) { 1069 checkThread(); 1070 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "pageUp"); 1071 return mProvider.pageUp(top); 1072 } 1073 1074 /** 1075 * Scrolls the contents of this WebView down by half the page size. 1076 * 1077 * @param bottom true to jump to bottom of page 1078 * @return true if the page was scrolled 1079 */ 1080 public boolean pageDown(boolean bottom) { 1081 checkThread(); 1082 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "pageDown"); 1083 return mProvider.pageDown(bottom); 1084 } 1085 1086 /** 1087 * Clears this WebView so that onDraw() will draw nothing but white background, 1088 * and onMeasure() will return 0 if MeasureSpec is not MeasureSpec.EXACTLY. 1089 * @deprecated Use WebView.loadUrl("about:blank") to reliably reset the view state 1090 * and release page resources (including any running JavaScript). 1091 */ 1092 @Deprecated 1093 public void clearView() { 1094 checkThread(); 1095 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearView"); 1096 mProvider.clearView(); 1097 } 1098 1099 /** 1100 * Gets a new picture that captures the current contents of this WebView. 1101 * The picture is of the entire document being displayed, and is not 1102 * limited to the area currently displayed by this WebView. Also, the 1103 * picture is a static copy and is unaffected by later changes to the 1104 * content being displayed. 1105 * <p> 1106 * Note that due to internal changes, for API levels between 1107 * {@link android.os.Build.VERSION_CODES#HONEYCOMB} and 1108 * {@link android.os.Build.VERSION_CODES#ICE_CREAM_SANDWICH} inclusive, the 1109 * picture does not include fixed position elements or scrollable divs. 1110 * 1111 * @return a picture that captures the current contents of this WebView 1112 */ 1113 public Picture capturePicture() { 1114 checkThread(); 1115 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "capturePicture"); 1116 return mProvider.capturePicture(); 1117 } 1118 1119 /** 1120 * Creates a PrintDocumentAdapter that provides the content of this Webview for printing. 1121 * Only supported for API levels 1122 * {@link android.os.Build.VERSION_CODES#KITKAT} and above. 1123 * 1124 * The adapter works by converting the Webview contents to a PDF stream. The Webview cannot 1125 * be drawn during the conversion process - any such draws are undefined. It is recommended 1126 * to use a dedicated off screen Webview for the printing. If necessary, an application may 1127 * temporarily hide a visible WebView by using a custom PrintDocumentAdapter instance 1128 * wrapped around the object returned and observing the onStart and onFinish methods. See 1129 * {@link android.print.PrintDocumentAdapter} for more information. 1130 */ 1131 public PrintDocumentAdapter createPrintDocumentAdapter() { 1132 checkThread(); 1133 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "createPrintDocumentAdapter"); 1134 return mProvider.createPrintDocumentAdapter(); 1135 } 1136 1137 /** 1138 * Gets the current scale of this WebView. 1139 * 1140 * @return the current scale 1141 * 1142 * @deprecated This method is prone to inaccuracy due to race conditions 1143 * between the web rendering and UI threads; prefer 1144 * {@link WebViewClient#onScaleChanged}. 1145 */ 1146 @Deprecated 1147 @ViewDebug.ExportedProperty(category = "webview") 1148 public float getScale() { 1149 checkThread(); 1150 return mProvider.getScale(); 1151 } 1152 1153 /** 1154 * Sets the initial scale for this WebView. 0 means default. 1155 * The behavior for the default scale depends on the state of 1156 * {@link WebSettings#getUseWideViewPort()} and 1157 * {@link WebSettings#getLoadWithOverviewMode()}. 1158 * If the content fits into the WebView control by width, then 1159 * the zoom is set to 100%. For wide content, the behavor 1160 * depends on the state of {@link WebSettings#getLoadWithOverviewMode()}. 1161 * If its value is true, the content will be zoomed out to be fit 1162 * by width into the WebView control, otherwise not. 1163 * 1164 * If initial scale is greater than 0, WebView starts with this value 1165 * as initial scale. 1166 * Please note that unlike the scale properties in the viewport meta tag, 1167 * this method doesn't take the screen density into account. 1168 * 1169 * @param scaleInPercent the initial scale in percent 1170 */ 1171 public void setInitialScale(int scaleInPercent) { 1172 checkThread(); 1173 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setInitialScale=" + scaleInPercent); 1174 mProvider.setInitialScale(scaleInPercent); 1175 } 1176 1177 /** 1178 * Invokes the graphical zoom picker widget for this WebView. This will 1179 * result in the zoom widget appearing on the screen to control the zoom 1180 * level of this WebView. 1181 */ 1182 public void invokeZoomPicker() { 1183 checkThread(); 1184 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "invokeZoomPicker"); 1185 mProvider.invokeZoomPicker(); 1186 } 1187 1188 /** 1189 * Gets a HitTestResult based on the current cursor node. If a HTML::a 1190 * tag is found and the anchor has a non-JavaScript URL, the HitTestResult 1191 * type is set to SRC_ANCHOR_TYPE and the URL is set in the "extra" field. 1192 * If the anchor does not have a URL or if it is a JavaScript URL, the type 1193 * will be UNKNOWN_TYPE and the URL has to be retrieved through 1194 * {@link #requestFocusNodeHref} asynchronously. If a HTML::img tag is 1195 * found, the HitTestResult type is set to IMAGE_TYPE and the URL is set in 1196 * the "extra" field. A type of 1197 * SRC_IMAGE_ANCHOR_TYPE indicates an anchor with a URL that has an image as 1198 * a child node. If a phone number is found, the HitTestResult type is set 1199 * to PHONE_TYPE and the phone number is set in the "extra" field of 1200 * HitTestResult. If a map address is found, the HitTestResult type is set 1201 * to GEO_TYPE and the address is set in the "extra" field of HitTestResult. 1202 * If an email address is found, the HitTestResult type is set to EMAIL_TYPE 1203 * and the email is set in the "extra" field of HitTestResult. Otherwise, 1204 * HitTestResult type is set to UNKNOWN_TYPE. 1205 */ 1206 public HitTestResult getHitTestResult() { 1207 checkThread(); 1208 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "getHitTestResult"); 1209 return mProvider.getHitTestResult(); 1210 } 1211 1212 /** 1213 * Requests the anchor or image element URL at the last tapped point. 1214 * If hrefMsg is null, this method returns immediately and does not 1215 * dispatch hrefMsg to its target. If the tapped point hits an image, 1216 * an anchor, or an image in an anchor, the message associates 1217 * strings in named keys in its data. The value paired with the key 1218 * may be an empty string. 1219 * 1220 * @param hrefMsg the message to be dispatched with the result of the 1221 * request. The message data contains three keys. "url" 1222 * returns the anchor's href attribute. "title" returns the 1223 * anchor's text. "src" returns the image's src attribute. 1224 */ 1225 public void requestFocusNodeHref(Message hrefMsg) { 1226 checkThread(); 1227 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "requestFocusNodeHref"); 1228 mProvider.requestFocusNodeHref(hrefMsg); 1229 } 1230 1231 /** 1232 * Requests the URL of the image last touched by the user. msg will be sent 1233 * to its target with a String representing the URL as its object. 1234 * 1235 * @param msg the message to be dispatched with the result of the request 1236 * as the data member with "url" as key. The result can be null. 1237 */ 1238 public void requestImageRef(Message msg) { 1239 checkThread(); 1240 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "requestImageRef"); 1241 mProvider.requestImageRef(msg); 1242 } 1243 1244 /** 1245 * Gets the URL for the current page. This is not always the same as the URL 1246 * passed to WebViewClient.onPageStarted because although the load for 1247 * that URL has begun, the current page may not have changed. 1248 * 1249 * @return the URL for the current page 1250 */ 1251 @ViewDebug.ExportedProperty(category = "webview") 1252 public String getUrl() { 1253 checkThread(); 1254 return mProvider.getUrl(); 1255 } 1256 1257 /** 1258 * Gets the original URL for the current page. This is not always the same 1259 * as the URL passed to WebViewClient.onPageStarted because although the 1260 * load for that URL has begun, the current page may not have changed. 1261 * Also, there may have been redirects resulting in a different URL to that 1262 * originally requested. 1263 * 1264 * @return the URL that was originally requested for the current page 1265 */ 1266 @ViewDebug.ExportedProperty(category = "webview") 1267 public String getOriginalUrl() { 1268 checkThread(); 1269 return mProvider.getOriginalUrl(); 1270 } 1271 1272 /** 1273 * Gets the title for the current page. This is the title of the current page 1274 * until WebViewClient.onReceivedTitle is called. 1275 * 1276 * @return the title for the current page 1277 */ 1278 @ViewDebug.ExportedProperty(category = "webview") 1279 public String getTitle() { 1280 checkThread(); 1281 return mProvider.getTitle(); 1282 } 1283 1284 /** 1285 * Gets the favicon for the current page. This is the favicon of the current 1286 * page until WebViewClient.onReceivedIcon is called. 1287 * 1288 * @return the favicon for the current page 1289 */ 1290 public Bitmap getFavicon() { 1291 checkThread(); 1292 return mProvider.getFavicon(); 1293 } 1294 1295 /** 1296 * Gets the touch icon URL for the apple-touch-icon <link> element, or 1297 * a URL on this site's server pointing to the standard location of a 1298 * touch icon. 1299 * 1300 * @hide 1301 */ 1302 public String getTouchIconUrl() { 1303 return mProvider.getTouchIconUrl(); 1304 } 1305 1306 /** 1307 * Gets the progress for the current page. 1308 * 1309 * @return the progress for the current page between 0 and 100 1310 */ 1311 public int getProgress() { 1312 checkThread(); 1313 return mProvider.getProgress(); 1314 } 1315 1316 /** 1317 * Gets the height of the HTML content. 1318 * 1319 * @return the height of the HTML content 1320 */ 1321 @ViewDebug.ExportedProperty(category = "webview") 1322 public int getContentHeight() { 1323 checkThread(); 1324 return mProvider.getContentHeight(); 1325 } 1326 1327 /** 1328 * Gets the width of the HTML content. 1329 * 1330 * @return the width of the HTML content 1331 * @hide 1332 */ 1333 @ViewDebug.ExportedProperty(category = "webview") 1334 public int getContentWidth() { 1335 return mProvider.getContentWidth(); 1336 } 1337 1338 /** 1339 * Pauses all layout, parsing, and JavaScript timers for all WebViews. This 1340 * is a global requests, not restricted to just this WebView. This can be 1341 * useful if the application has been paused. 1342 */ 1343 public void pauseTimers() { 1344 checkThread(); 1345 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "pauseTimers"); 1346 mProvider.pauseTimers(); 1347 } 1348 1349 /** 1350 * Resumes all layout, parsing, and JavaScript timers for all WebViews. 1351 * This will resume dispatching all timers. 1352 */ 1353 public void resumeTimers() { 1354 checkThread(); 1355 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "resumeTimers"); 1356 mProvider.resumeTimers(); 1357 } 1358 1359 /** 1360 * Pauses any extra processing associated with this WebView and its 1361 * associated DOM, plugins, JavaScript etc. For example, if this WebView is 1362 * taken offscreen, this could be called to reduce unnecessary CPU or 1363 * network traffic. When this WebView is again "active", call onResume(). 1364 * Note that this differs from pauseTimers(), which affects all WebViews. 1365 */ 1366 public void onPause() { 1367 checkThread(); 1368 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "onPause"); 1369 mProvider.onPause(); 1370 } 1371 1372 /** 1373 * Resumes a WebView after a previous call to onPause(). 1374 */ 1375 public void onResume() { 1376 checkThread(); 1377 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "onResume"); 1378 mProvider.onResume(); 1379 } 1380 1381 /** 1382 * Gets whether this WebView is paused, meaning onPause() was called. 1383 * Calling onResume() sets the paused state back to false. 1384 * 1385 * @hide 1386 */ 1387 public boolean isPaused() { 1388 return mProvider.isPaused(); 1389 } 1390 1391 /** 1392 * Informs this WebView that memory is low so that it can free any available 1393 * memory. 1394 */ 1395 public void freeMemory() { 1396 checkThread(); 1397 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "freeMemory"); 1398 mProvider.freeMemory(); 1399 } 1400 1401 /** 1402 * Clears the resource cache. Note that the cache is per-application, so 1403 * this will clear the cache for all WebViews used. 1404 * 1405 * @param includeDiskFiles if false, only the RAM cache is cleared 1406 */ 1407 public void clearCache(boolean includeDiskFiles) { 1408 checkThread(); 1409 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearCache"); 1410 mProvider.clearCache(includeDiskFiles); 1411 } 1412 1413 /** 1414 * Removes the autocomplete popup from the currently focused form field, if 1415 * present. Note this only affects the display of the autocomplete popup, 1416 * it does not remove any saved form data from this WebView's store. To do 1417 * that, use {@link WebViewDatabase#clearFormData}. 1418 */ 1419 public void clearFormData() { 1420 checkThread(); 1421 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearFormData"); 1422 mProvider.clearFormData(); 1423 } 1424 1425 /** 1426 * Tells this WebView to clear its internal back/forward list. 1427 */ 1428 public void clearHistory() { 1429 checkThread(); 1430 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearHistory"); 1431 mProvider.clearHistory(); 1432 } 1433 1434 /** 1435 * Clears the SSL preferences table stored in response to proceeding with 1436 * SSL certificate errors. 1437 */ 1438 public void clearSslPreferences() { 1439 checkThread(); 1440 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearSslPreferences"); 1441 mProvider.clearSslPreferences(); 1442 } 1443 1444 /** 1445 * Gets the WebBackForwardList for this WebView. This contains the 1446 * back/forward list for use in querying each item in the history stack. 1447 * This is a copy of the private WebBackForwardList so it contains only a 1448 * snapshot of the current state. Multiple calls to this method may return 1449 * different objects. The object returned from this method will not be 1450 * updated to reflect any new state. 1451 */ 1452 public WebBackForwardList copyBackForwardList() { 1453 checkThread(); 1454 return mProvider.copyBackForwardList(); 1455 1456 } 1457 1458 /** 1459 * Registers the listener to be notified as find-on-page operations 1460 * progress. This will replace the current listener. 1461 * 1462 * @param listener an implementation of {@link FindListener} 1463 */ 1464 public void setFindListener(FindListener listener) { 1465 checkThread(); 1466 setupFindListenerIfNeeded(); 1467 mFindListener.mUserFindListener = listener; 1468 } 1469 1470 /** 1471 * Highlights and scrolls to the next match found by 1472 * {@link #findAllAsync}, wrapping around page boundaries as necessary. 1473 * Notifies any registered {@link FindListener}. If {@link #findAllAsync(String)} 1474 * has not been called yet, or if {@link #clearMatches} has been called since the 1475 * last find operation, this function does nothing. 1476 * 1477 * @param forward the direction to search 1478 * @see #setFindListener 1479 */ 1480 public void findNext(boolean forward) { 1481 checkThread(); 1482 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "findNext"); 1483 mProvider.findNext(forward); 1484 } 1485 1486 /** 1487 * Finds all instances of find on the page and highlights them. 1488 * Notifies any registered {@link FindListener}. 1489 * 1490 * @param find the string to find 1491 * @return the number of occurances of the String "find" that were found 1492 * @deprecated {@link #findAllAsync} is preferred. 1493 * @see #setFindListener 1494 */ 1495 @Deprecated 1496 public int findAll(String find) { 1497 checkThread(); 1498 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "findAll"); 1499 StrictMode.noteSlowCall("findAll blocks UI: prefer findAllAsync"); 1500 return mProvider.findAll(find); 1501 } 1502 1503 /** 1504 * Finds all instances of find on the page and highlights them, 1505 * asynchronously. Notifies any registered {@link FindListener}. 1506 * Successive calls to this will cancel any pending searches. 1507 * 1508 * @param find the string to find. 1509 * @see #setFindListener 1510 */ 1511 public void findAllAsync(String find) { 1512 checkThread(); 1513 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "findAllAsync"); 1514 mProvider.findAllAsync(find); 1515 } 1516 1517 /** 1518 * Starts an ActionMode for finding text in this WebView. Only works if this 1519 * WebView is attached to the view system. 1520 * 1521 * @param text if non-null, will be the initial text to search for. 1522 * Otherwise, the last String searched for in this WebView will 1523 * be used to start. 1524 * @param showIme if true, show the IME, assuming the user will begin typing. 1525 * If false and text is non-null, perform a find all. 1526 * @return true if the find dialog is shown, false otherwise 1527 * @deprecated This method does not work reliably on all Android versions; 1528 * implementing a custom find dialog using WebView.findAllAsync() 1529 * provides a more robust solution. 1530 */ 1531 @Deprecated 1532 public boolean showFindDialog(String text, boolean showIme) { 1533 checkThread(); 1534 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "showFindDialog"); 1535 return mProvider.showFindDialog(text, showIme); 1536 } 1537 1538 /** 1539 * Gets the first substring consisting of the address of a physical 1540 * location. Currently, only addresses in the United States are detected, 1541 * and consist of: 1542 * <ul> 1543 * <li>a house number</li> 1544 * <li>a street name</li> 1545 * <li>a street type (Road, Circle, etc), either spelled out or 1546 * abbreviated</li> 1547 * <li>a city name</li> 1548 * <li>a state or territory, either spelled out or two-letter abbr</li> 1549 * <li>an optional 5 digit or 9 digit zip code</li> 1550 * </ul> 1551 * All names must be correctly capitalized, and the zip code, if present, 1552 * must be valid for the state. The street type must be a standard USPS 1553 * spelling or abbreviation. The state or territory must also be spelled 1554 * or abbreviated using USPS standards. The house number may not exceed 1555 * five digits. 1556 * 1557 * @param addr the string to search for addresses 1558 * @return the address, or if no address is found, null 1559 */ 1560 public static String findAddress(String addr) { 1561 return getFactory().getStatics().findAddress(addr); 1562 } 1563 1564 /** 1565 * Clears the highlighting surrounding text matches created by 1566 * {@link #findAllAsync}. 1567 */ 1568 public void clearMatches() { 1569 checkThread(); 1570 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "clearMatches"); 1571 mProvider.clearMatches(); 1572 } 1573 1574 /** 1575 * Queries the document to see if it contains any image references. The 1576 * message object will be dispatched with arg1 being set to 1 if images 1577 * were found and 0 if the document does not reference any images. 1578 * 1579 * @param response the message that will be dispatched with the result 1580 */ 1581 public void documentHasImages(Message response) { 1582 checkThread(); 1583 mProvider.documentHasImages(response); 1584 } 1585 1586 /** 1587 * Sets the WebViewClient that will receive various notifications and 1588 * requests. This will replace the current handler. 1589 * 1590 * @param client an implementation of WebViewClient 1591 */ 1592 public void setWebViewClient(WebViewClient client) { 1593 checkThread(); 1594 mProvider.setWebViewClient(client); 1595 } 1596 1597 /** 1598 * Registers the interface to be used when content can not be handled by 1599 * the rendering engine, and should be downloaded instead. This will replace 1600 * the current handler. 1601 * 1602 * @param listener an implementation of DownloadListener 1603 */ 1604 public void setDownloadListener(DownloadListener listener) { 1605 checkThread(); 1606 mProvider.setDownloadListener(listener); 1607 } 1608 1609 /** 1610 * Sets the chrome handler. This is an implementation of WebChromeClient for 1611 * use in handling JavaScript dialogs, favicons, titles, and the progress. 1612 * This will replace the current handler. 1613 * 1614 * @param client an implementation of WebChromeClient 1615 */ 1616 public void setWebChromeClient(WebChromeClient client) { 1617 checkThread(); 1618 mProvider.setWebChromeClient(client); 1619 } 1620 1621 /** 1622 * Sets the Picture listener. This is an interface used to receive 1623 * notifications of a new Picture. 1624 * 1625 * @param listener an implementation of WebView.PictureListener 1626 * @deprecated This method is now obsolete. 1627 */ 1628 @Deprecated 1629 public void setPictureListener(PictureListener listener) { 1630 checkThread(); 1631 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "setPictureListener=" + listener); 1632 mProvider.setPictureListener(listener); 1633 } 1634 1635 /** 1636 * Injects the supplied Java object into this WebView. The object is 1637 * injected into the JavaScript context of the main frame, using the 1638 * supplied name. This allows the Java object's methods to be 1639 * accessed from JavaScript. For applications targeted to API 1640 * level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 1641 * and above, only public methods that are annotated with 1642 * {@link android.webkit.JavascriptInterface} can be accessed from JavaScript. 1643 * For applications targeted to API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN} or below, 1644 * all public methods (including the inherited ones) can be accessed, see the 1645 * important security note below for implications. 1646 * <p> Note that injected objects will not 1647 * appear in JavaScript until the page is next (re)loaded. For example: 1648 * <pre> 1649 * class JsObject { 1650 * {@literal @}JavascriptInterface 1651 * public String toString() { return "injectedObject"; } 1652 * } 1653 * webView.addJavascriptInterface(new JsObject(), "injectedObject"); 1654 * webView.loadData("<!DOCTYPE html><title></title>", "text/html", null); 1655 * webView.loadUrl("javascript:alert(injectedObject.toString())");</pre> 1656 * <p> 1657 * <strong>IMPORTANT:</strong> 1658 * <ul> 1659 * <li> This method can be used to allow JavaScript to control the host 1660 * application. This is a powerful feature, but also presents a security 1661 * risk for applications targeted to API level 1662 * {@link android.os.Build.VERSION_CODES#JELLY_BEAN} or below, because 1663 * JavaScript could use reflection to access an 1664 * injected object's public fields. Use of this method in a WebView 1665 * containing untrusted content could allow an attacker to manipulate the 1666 * host application in unintended ways, executing Java code with the 1667 * permissions of the host application. Use extreme care when using this 1668 * method in a WebView which could contain untrusted content.</li> 1669 * <li> JavaScript interacts with Java object on a private, background 1670 * thread of this WebView. Care is therefore required to maintain thread 1671 * safety.</li> 1672 * <li> The Java object's fields are not accessible.</li> 1673 * </ul> 1674 * 1675 * @param object the Java object to inject into this WebView's JavaScript 1676 * context. Null values are ignored. 1677 * @param name the name used to expose the object in JavaScript 1678 */ 1679 public void addJavascriptInterface(Object object, String name) { 1680 checkThread(); 1681 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "addJavascriptInterface=" + name); 1682 mProvider.addJavascriptInterface(object, name); 1683 } 1684 1685 /** 1686 * Removes a previously injected Java object from this WebView. Note that 1687 * the removal will not be reflected in JavaScript until the page is next 1688 * (re)loaded. See {@link #addJavascriptInterface}. 1689 * 1690 * @param name the name used to expose the object in JavaScript 1691 */ 1692 public void removeJavascriptInterface(String name) { 1693 checkThread(); 1694 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "removeJavascriptInterface=" + name); 1695 mProvider.removeJavascriptInterface(name); 1696 } 1697 1698 /** 1699 * Gets the WebSettings object used to control the settings for this 1700 * WebView. 1701 * 1702 * @return a WebSettings object that can be used to control this WebView's 1703 * settings 1704 */ 1705 public WebSettings getSettings() { 1706 checkThread(); 1707 return mProvider.getSettings(); 1708 } 1709 1710 /** 1711 * Gets the list of currently loaded plugins. 1712 * 1713 * @return the list of currently loaded plugins 1714 * @deprecated This was used for Gears, which has been deprecated. 1715 * @hide 1716 */ 1717 @Deprecated 1718 public static synchronized PluginList getPluginList() { 1719 checkThread(); 1720 return new PluginList(); 1721 } 1722 1723 /** 1724 * @deprecated This was used for Gears, which has been deprecated. 1725 * @hide 1726 */ 1727 @Deprecated 1728 public void refreshPlugins(boolean reloadOpenPages) { 1729 checkThread(); 1730 } 1731 1732 /** 1733 * Puts this WebView into text selection mode. Do not rely on this 1734 * functionality; it will be deprecated in the future. 1735 * 1736 * @deprecated This method is now obsolete. 1737 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 1738 */ 1739 @Deprecated 1740 public void emulateShiftHeld() { 1741 checkThread(); 1742 } 1743 1744 /** 1745 * @deprecated WebView no longer needs to implement 1746 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 1747 */ 1748 @Override 1749 // Cannot add @hide as this can always be accessed via the interface. 1750 @Deprecated 1751 public void onChildViewAdded(View parent, View child) {} 1752 1753 /** 1754 * @deprecated WebView no longer needs to implement 1755 * ViewGroup.OnHierarchyChangeListener. This method does nothing now. 1756 */ 1757 @Override 1758 // Cannot add @hide as this can always be accessed via the interface. 1759 @Deprecated 1760 public void onChildViewRemoved(View p, View child) {} 1761 1762 /** 1763 * @deprecated WebView should not have implemented 1764 * ViewTreeObserver.OnGlobalFocusChangeListener. This method does nothing now. 1765 */ 1766 @Override 1767 // Cannot add @hide as this can always be accessed via the interface. 1768 @Deprecated 1769 public void onGlobalFocusChanged(View oldFocus, View newFocus) { 1770 } 1771 1772 /** 1773 * @deprecated Only the default case, true, will be supported in a future version. 1774 */ 1775 @Deprecated 1776 public void setMapTrackballToArrowKeys(boolean setMap) { 1777 checkThread(); 1778 mProvider.setMapTrackballToArrowKeys(setMap); 1779 } 1780 1781 1782 public void flingScroll(int vx, int vy) { 1783 checkThread(); 1784 if (DebugFlags.TRACE_API) Log.d(LOGTAG, "flingScroll"); 1785 mProvider.flingScroll(vx, vy); 1786 } 1787 1788 /** 1789 * Gets the zoom controls for this WebView, as a separate View. The caller 1790 * is responsible for inserting this View into the layout hierarchy. 1791 * <p/> 1792 * API level {@link android.os.Build.VERSION_CODES#CUPCAKE} introduced 1793 * built-in zoom mechanisms for the WebView, as opposed to these separate 1794 * zoom controls. The built-in mechanisms are preferred and can be enabled 1795 * using {@link WebSettings#setBuiltInZoomControls}. 1796 * 1797 * @deprecated the built-in zoom mechanisms are preferred 1798 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN} 1799 */ 1800 @Deprecated 1801 public View getZoomControls() { 1802 checkThread(); 1803 return mProvider.getZoomControls(); 1804 } 1805 1806 /** 1807 * Gets whether this WebView can be zoomed in. 1808 * 1809 * @return true if this WebView can be zoomed in 1810 * 1811 * @deprecated This method is prone to inaccuracy due to race conditions 1812 * between the web rendering and UI threads; prefer 1813 * {@link WebViewClient#onScaleChanged}. 1814 */ 1815 @Deprecated 1816 public boolean canZoomIn() { 1817 checkThread(); 1818 return mProvider.canZoomIn(); 1819 } 1820 1821 /** 1822 * Gets whether this WebView can be zoomed out. 1823 * 1824 * @return true if this WebView can be zoomed out 1825 * 1826 * @deprecated This method is prone to inaccuracy due to race conditions 1827 * between the web rendering and UI threads; prefer 1828 * {@link WebViewClient#onScaleChanged}. 1829 */ 1830 @Deprecated 1831 public boolean canZoomOut() { 1832 checkThread(); 1833 return mProvider.canZoomOut(); 1834 } 1835 1836 /** 1837 * Performs zoom in in this WebView. 1838 * 1839 * @return true if zoom in succeeds, false if no zoom changes 1840 */ 1841 public boolean zoomIn() { 1842 checkThread(); 1843 return mProvider.zoomIn(); 1844 } 1845 1846 /** 1847 * Performs zoom out in this WebView. 1848 * 1849 * @return true if zoom out succeeds, false if no zoom changes 1850 */ 1851 public boolean zoomOut() { 1852 checkThread(); 1853 return mProvider.zoomOut(); 1854 } 1855 1856 /** 1857 * @deprecated This method is now obsolete. 1858 * @hide Since API level {@link android.os.Build.VERSION_CODES#JELLY_BEAN_MR1} 1859 */ 1860 @Deprecated 1861 public void debugDump() { 1862 checkThread(); 1863 } 1864 1865 /** 1866 * See {@link ViewDebug.HierarchyHandler#dumpViewHierarchyWithProperties(BufferedWriter, int)} 1867 * @hide 1868 */ 1869 @Override 1870 public void dumpViewHierarchyWithProperties(BufferedWriter out, int level) { 1871 mProvider.dumpViewHierarchyWithProperties(out, level); 1872 } 1873 1874 /** 1875 * See {@link ViewDebug.HierarchyHandler#findHierarchyView(String, int)} 1876 * @hide 1877 */ 1878 @Override 1879 public View findHierarchyView(String className, int hashCode) { 1880 return mProvider.findHierarchyView(className, hashCode); 1881 } 1882 1883 //------------------------------------------------------------------------- 1884 // Interface for WebView providers 1885 //------------------------------------------------------------------------- 1886 1887 /** 1888 * Gets the WebViewProvider. Used by providers to obtain the underlying 1889 * implementation, e.g. when the appliction responds to 1890 * WebViewClient.onCreateWindow() request. 1891 * 1892 * @hide WebViewProvider is not public API. 1893 */ 1894 public WebViewProvider getWebViewProvider() { 1895 return mProvider; 1896 } 1897 1898 /** 1899 * Callback interface, allows the provider implementation to access non-public methods 1900 * and fields, and make super-class calls in this WebView instance. 1901 * @hide Only for use by WebViewProvider implementations 1902 */ 1903 public class PrivateAccess { 1904 // ---- Access to super-class methods ---- 1905 public int super_getScrollBarStyle() { 1906 return WebView.super.getScrollBarStyle(); 1907 } 1908 1909 public void super_scrollTo(int scrollX, int scrollY) { 1910 WebView.super.scrollTo(scrollX, scrollY); 1911 } 1912 1913 public void super_computeScroll() { 1914 WebView.super.computeScroll(); 1915 } 1916 1917 public boolean super_onHoverEvent(MotionEvent event) { 1918 return WebView.super.onHoverEvent(event); 1919 } 1920 1921 public boolean super_performAccessibilityAction(int action, Bundle arguments) { 1922 return WebView.super.performAccessibilityAction(action, arguments); 1923 } 1924 1925 public boolean super_performLongClick() { 1926 return WebView.super.performLongClick(); 1927 } 1928 1929 public boolean super_setFrame(int left, int top, int right, int bottom) { 1930 return WebView.super.setFrame(left, top, right, bottom); 1931 } 1932 1933 public boolean super_dispatchKeyEvent(KeyEvent event) { 1934 return WebView.super.dispatchKeyEvent(event); 1935 } 1936 1937 public boolean super_onGenericMotionEvent(MotionEvent event) { 1938 return WebView.super.onGenericMotionEvent(event); 1939 } 1940 1941 public boolean super_requestFocus(int direction, Rect previouslyFocusedRect) { 1942 return WebView.super.requestFocus(direction, previouslyFocusedRect); 1943 } 1944 1945 public void super_setLayoutParams(ViewGroup.LayoutParams params) { 1946 WebView.super.setLayoutParams(params); 1947 } 1948 1949 // ---- Access to non-public methods ---- 1950 public void overScrollBy(int deltaX, int deltaY, 1951 int scrollX, int scrollY, 1952 int scrollRangeX, int scrollRangeY, 1953 int maxOverScrollX, int maxOverScrollY, 1954 boolean isTouchEvent) { 1955 WebView.this.overScrollBy(deltaX, deltaY, scrollX, scrollY, scrollRangeX, scrollRangeY, 1956 maxOverScrollX, maxOverScrollY, isTouchEvent); 1957 } 1958 1959 public void awakenScrollBars(int duration) { 1960 WebView.this.awakenScrollBars(duration); 1961 } 1962 1963 public void awakenScrollBars(int duration, boolean invalidate) { 1964 WebView.this.awakenScrollBars(duration, invalidate); 1965 } 1966 1967 public float getVerticalScrollFactor() { 1968 return WebView.this.getVerticalScrollFactor(); 1969 } 1970 1971 public float getHorizontalScrollFactor() { 1972 return WebView.this.getHorizontalScrollFactor(); 1973 } 1974 1975 public void setMeasuredDimension(int measuredWidth, int measuredHeight) { 1976 WebView.this.setMeasuredDimension(measuredWidth, measuredHeight); 1977 } 1978 1979 public void onScrollChanged(int l, int t, int oldl, int oldt) { 1980 WebView.this.onScrollChanged(l, t, oldl, oldt); 1981 } 1982 1983 public int getHorizontalScrollbarHeight() { 1984 return WebView.this.getHorizontalScrollbarHeight(); 1985 } 1986 1987 public void super_onDrawVerticalScrollBar(Canvas canvas, Drawable scrollBar, 1988 int l, int t, int r, int b) { 1989 WebView.super.onDrawVerticalScrollBar(canvas, scrollBar, l, t, r, b); 1990 } 1991 1992 // ---- Access to (non-public) fields ---- 1993 /** Raw setter for the scroll X value, without invoking onScrollChanged handlers etc. */ 1994 public void setScrollXRaw(int scrollX) { 1995 WebView.this.mScrollX = scrollX; 1996 } 1997 1998 /** Raw setter for the scroll Y value, without invoking onScrollChanged handlers etc. */ 1999 public void setScrollYRaw(int scrollY) { 2000 WebView.this.mScrollY = scrollY; 2001 } 2002 2003 } 2004 2005 //------------------------------------------------------------------------- 2006 // Package-private internal stuff 2007 //------------------------------------------------------------------------- 2008 2009 // Only used by android.webkit.FindActionModeCallback. 2010 void setFindDialogFindListener(FindListener listener) { 2011 checkThread(); 2012 setupFindListenerIfNeeded(); 2013 mFindListener.mFindDialogFindListener = listener; 2014 } 2015 2016 // Only used by android.webkit.FindActionModeCallback. 2017 void notifyFindDialogDismissed() { 2018 checkThread(); 2019 mProvider.notifyFindDialogDismissed(); 2020 } 2021 2022 //------------------------------------------------------------------------- 2023 // Private internal stuff 2024 //------------------------------------------------------------------------- 2025 2026 private WebViewProvider mProvider; 2027 2028 /** 2029 * In addition to the FindListener that the user may set via the WebView.setFindListener 2030 * API, FindActionModeCallback will register it's own FindListener. We keep them separate 2031 * via this class so that that the two FindListeners can potentially exist at once. 2032 */ 2033 private class FindListenerDistributor implements FindListener { 2034 private FindListener mFindDialogFindListener; 2035 private FindListener mUserFindListener; 2036 2037 @Override 2038 public void onFindResultReceived(int activeMatchOrdinal, int numberOfMatches, 2039 boolean isDoneCounting) { 2040 if (mFindDialogFindListener != null) { 2041 mFindDialogFindListener.onFindResultReceived(activeMatchOrdinal, numberOfMatches, 2042 isDoneCounting); 2043 } 2044 2045 if (mUserFindListener != null) { 2046 mUserFindListener.onFindResultReceived(activeMatchOrdinal, numberOfMatches, 2047 isDoneCounting); 2048 } 2049 } 2050 } 2051 private FindListenerDistributor mFindListener; 2052 2053 private void setupFindListenerIfNeeded() { 2054 if (mFindListener == null) { 2055 mFindListener = new FindListenerDistributor(); 2056 mProvider.setFindListener(mFindListener); 2057 } 2058 } 2059 2060 private void ensureProviderCreated() { 2061 checkThread(); 2062 if (mProvider == null) { 2063 // As this can get called during the base class constructor chain, pass the minimum 2064 // number of dependencies here; the rest are deferred to init(). 2065 mProvider = getFactory().createWebView(this, new PrivateAccess()); 2066 } 2067 } 2068 2069 private static synchronized WebViewFactoryProvider getFactory() { 2070 return WebViewFactory.getProvider(); 2071 } 2072 2073 private static void checkThread() { 2074 if (Looper.myLooper() != Looper.getMainLooper()) { 2075 Throwable throwable = new Throwable( 2076 "Warning: A WebView method was called on thread '" + 2077 Thread.currentThread().getName() + "'. " + 2078 "All WebView methods must be called on the UI thread. " + 2079 "Future versions of WebView may not support use on other threads."); 2080 Log.w(LOGTAG, Log.getStackTraceString(throwable)); 2081 StrictMode.onWebViewMethodCalledOnWrongThread(throwable); 2082 2083 if (sEnforceThreadChecking) { 2084 throw new RuntimeException(throwable); 2085 } 2086 } 2087 } 2088 2089 //------------------------------------------------------------------------- 2090 // Override View methods 2091 //------------------------------------------------------------------------- 2092 2093 // TODO: Add a test that enumerates all methods in ViewDelegte & ScrollDelegate, and ensures 2094 // there's a corresponding override (or better, caller) for each of them in here. 2095 2096 @Override 2097 protected void onAttachedToWindow() { 2098 super.onAttachedToWindow(); 2099 mProvider.getViewDelegate().onAttachedToWindow(); 2100 } 2101 2102 @Override 2103 protected void onDetachedFromWindow() { 2104 mProvider.getViewDelegate().onDetachedFromWindow(); 2105 super.onDetachedFromWindow(); 2106 } 2107 2108 @Override 2109 public void setLayoutParams(ViewGroup.LayoutParams params) { 2110 mProvider.getViewDelegate().setLayoutParams(params); 2111 } 2112 2113 @Override 2114 public void setOverScrollMode(int mode) { 2115 super.setOverScrollMode(mode); 2116 // This method may be called in the constructor chain, before the WebView provider is 2117 // created. 2118 ensureProviderCreated(); 2119 mProvider.getViewDelegate().setOverScrollMode(mode); 2120 } 2121 2122 @Override 2123 public void setScrollBarStyle(int style) { 2124 mProvider.getViewDelegate().setScrollBarStyle(style); 2125 super.setScrollBarStyle(style); 2126 } 2127 2128 @Override 2129 protected int computeHorizontalScrollRange() { 2130 return mProvider.getScrollDelegate().computeHorizontalScrollRange(); 2131 } 2132 2133 @Override 2134 protected int computeHorizontalScrollOffset() { 2135 return mProvider.getScrollDelegate().computeHorizontalScrollOffset(); 2136 } 2137 2138 @Override 2139 protected int computeVerticalScrollRange() { 2140 return mProvider.getScrollDelegate().computeVerticalScrollRange(); 2141 } 2142 2143 @Override 2144 protected int computeVerticalScrollOffset() { 2145 return mProvider.getScrollDelegate().computeVerticalScrollOffset(); 2146 } 2147 2148 @Override 2149 protected int computeVerticalScrollExtent() { 2150 return mProvider.getScrollDelegate().computeVerticalScrollExtent(); 2151 } 2152 2153 @Override 2154 public void computeScroll() { 2155 mProvider.getScrollDelegate().computeScroll(); 2156 } 2157 2158 @Override 2159 public boolean onHoverEvent(MotionEvent event) { 2160 return mProvider.getViewDelegate().onHoverEvent(event); 2161 } 2162 2163 @Override 2164 public boolean onTouchEvent(MotionEvent event) { 2165 return mProvider.getViewDelegate().onTouchEvent(event); 2166 } 2167 2168 @Override 2169 public boolean onGenericMotionEvent(MotionEvent event) { 2170 return mProvider.getViewDelegate().onGenericMotionEvent(event); 2171 } 2172 2173 @Override 2174 public boolean onTrackballEvent(MotionEvent event) { 2175 return mProvider.getViewDelegate().onTrackballEvent(event); 2176 } 2177 2178 @Override 2179 public boolean onKeyDown(int keyCode, KeyEvent event) { 2180 return mProvider.getViewDelegate().onKeyDown(keyCode, event); 2181 } 2182 2183 @Override 2184 public boolean onKeyUp(int keyCode, KeyEvent event) { 2185 return mProvider.getViewDelegate().onKeyUp(keyCode, event); 2186 } 2187 2188 @Override 2189 public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) { 2190 return mProvider.getViewDelegate().onKeyMultiple(keyCode, repeatCount, event); 2191 } 2192 2193 /* 2194 TODO: These are not currently implemented in WebViewClassic, but it seems inconsistent not 2195 to be delegating them too. 2196 2197 @Override 2198 public boolean onKeyPreIme(int keyCode, KeyEvent event) { 2199 return mProvider.getViewDelegate().onKeyPreIme(keyCode, event); 2200 } 2201 @Override 2202 public boolean onKeyLongPress(int keyCode, KeyEvent event) { 2203 return mProvider.getViewDelegate().onKeyLongPress(keyCode, event); 2204 } 2205 @Override 2206 public boolean onKeyShortcut(int keyCode, KeyEvent event) { 2207 return mProvider.getViewDelegate().onKeyShortcut(keyCode, event); 2208 } 2209 */ 2210 2211 @Override 2212 public AccessibilityNodeProvider getAccessibilityNodeProvider() { 2213 AccessibilityNodeProvider provider = 2214 mProvider.getViewDelegate().getAccessibilityNodeProvider(); 2215 return provider == null ? super.getAccessibilityNodeProvider() : provider; 2216 } 2217 2218 @Deprecated 2219 @Override 2220 public boolean shouldDelayChildPressedState() { 2221 return mProvider.getViewDelegate().shouldDelayChildPressedState(); 2222 } 2223 2224 @Override 2225 public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) { 2226 super.onInitializeAccessibilityNodeInfo(info); 2227 info.setClassName(WebView.class.getName()); 2228 mProvider.getViewDelegate().onInitializeAccessibilityNodeInfo(info); 2229 } 2230 2231 @Override 2232 public void onInitializeAccessibilityEvent(AccessibilityEvent event) { 2233 super.onInitializeAccessibilityEvent(event); 2234 event.setClassName(WebView.class.getName()); 2235 mProvider.getViewDelegate().onInitializeAccessibilityEvent(event); 2236 } 2237 2238 @Override 2239 public boolean performAccessibilityAction(int action, Bundle arguments) { 2240 return mProvider.getViewDelegate().performAccessibilityAction(action, arguments); 2241 } 2242 2243 /** @hide */ 2244 @Override 2245 protected void onDrawVerticalScrollBar(Canvas canvas, Drawable scrollBar, 2246 int l, int t, int r, int b) { 2247 mProvider.getViewDelegate().onDrawVerticalScrollBar(canvas, scrollBar, l, t, r, b); 2248 } 2249 2250 @Override 2251 protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, boolean clampedY) { 2252 mProvider.getViewDelegate().onOverScrolled(scrollX, scrollY, clampedX, clampedY); 2253 } 2254 2255 @Override 2256 protected void onWindowVisibilityChanged(int visibility) { 2257 super.onWindowVisibilityChanged(visibility); 2258 mProvider.getViewDelegate().onWindowVisibilityChanged(visibility); 2259 } 2260 2261 @Override 2262 protected void onDraw(Canvas canvas) { 2263 mProvider.getViewDelegate().onDraw(canvas); 2264 } 2265 2266 @Override 2267 public boolean performLongClick() { 2268 return mProvider.getViewDelegate().performLongClick(); 2269 } 2270 2271 @Override 2272 protected void onConfigurationChanged(Configuration newConfig) { 2273 mProvider.getViewDelegate().onConfigurationChanged(newConfig); 2274 } 2275 2276 @Override 2277 public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 2278 return mProvider.getViewDelegate().onCreateInputConnection(outAttrs); 2279 } 2280 2281 @Override 2282 protected void onVisibilityChanged(View changedView, int visibility) { 2283 super.onVisibilityChanged(changedView, visibility); 2284 // This method may be called in the constructor chain, before the WebView provider is 2285 // created. 2286 ensureProviderCreated(); 2287 mProvider.getViewDelegate().onVisibilityChanged(changedView, visibility); 2288 } 2289 2290 @Override 2291 public void onWindowFocusChanged(boolean hasWindowFocus) { 2292 mProvider.getViewDelegate().onWindowFocusChanged(hasWindowFocus); 2293 super.onWindowFocusChanged(hasWindowFocus); 2294 } 2295 2296 @Override 2297 protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) { 2298 mProvider.getViewDelegate().onFocusChanged(focused, direction, previouslyFocusedRect); 2299 super.onFocusChanged(focused, direction, previouslyFocusedRect); 2300 } 2301 2302 /** @hide */ 2303 @Override 2304 protected boolean setFrame(int left, int top, int right, int bottom) { 2305 return mProvider.getViewDelegate().setFrame(left, top, right, bottom); 2306 } 2307 2308 @Override 2309 protected void onSizeChanged(int w, int h, int ow, int oh) { 2310 super.onSizeChanged(w, h, ow, oh); 2311 mProvider.getViewDelegate().onSizeChanged(w, h, ow, oh); 2312 } 2313 2314 @Override 2315 protected void onScrollChanged(int l, int t, int oldl, int oldt) { 2316 super.onScrollChanged(l, t, oldl, oldt); 2317 mProvider.getViewDelegate().onScrollChanged(l, t, oldl, oldt); 2318 } 2319 2320 @Override 2321 public boolean dispatchKeyEvent(KeyEvent event) { 2322 return mProvider.getViewDelegate().dispatchKeyEvent(event); 2323 } 2324 2325 @Override 2326 public boolean requestFocus(int direction, Rect previouslyFocusedRect) { 2327 return mProvider.getViewDelegate().requestFocus(direction, previouslyFocusedRect); 2328 } 2329 2330 @Override 2331 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 2332 super.onMeasure(widthMeasureSpec, heightMeasureSpec); 2333 mProvider.getViewDelegate().onMeasure(widthMeasureSpec, heightMeasureSpec); 2334 } 2335 2336 @Override 2337 public boolean requestChildRectangleOnScreen(View child, Rect rect, boolean immediate) { 2338 return mProvider.getViewDelegate().requestChildRectangleOnScreen(child, rect, immediate); 2339 } 2340 2341 @Override 2342 public void setBackgroundColor(int color) { 2343 mProvider.getViewDelegate().setBackgroundColor(color); 2344 } 2345 2346 @Override 2347 public void setLayerType(int layerType, Paint paint) { 2348 super.setLayerType(layerType, paint); 2349 mProvider.getViewDelegate().setLayerType(layerType, paint); 2350 } 2351 2352 @Override 2353 protected void dispatchDraw(Canvas canvas) { 2354 mProvider.getViewDelegate().preDispatchDraw(canvas); 2355 super.dispatchDraw(canvas); 2356 } 2357} 2358