/*
    * Copyright (c) 2002-2025 Gargoyle Software Inc.
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    * https://www.apache.org/licenses/LICENSE-2.0
    *
    * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.htmlunit.javascript.host;
  
  import static org.htmlunit.BrowserVersionFeatures.EVENT_SCROLL_UIEVENT;
  import static org.htmlunit.BrowserVersionFeatures.JS_WINDOW_SELECTION_NULL_IF_INVISIBLE;
  import static org.htmlunit.javascript.configuration.SupportedBrowser.CHROME;
  import static org.htmlunit.javascript.configuration.SupportedBrowser.EDGE;
  import static org.htmlunit.javascript.configuration.SupportedBrowser.FF;
  import static org.htmlunit.javascript.configuration.SupportedBrowser.FF_ESR;
  
  import java.io.IOException;
  import java.io.ObjectInputStream;
  import java.io.Serializable;
  import java.lang.reflect.Method;
  import java.net.MalformedURLException;
  import java.net.URL;
  import java.util.ArrayList;
  import java.util.EnumMap;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.function.Predicate;
  import java.util.function.Supplier;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.htmlunit.AlertHandler;
  import org.htmlunit.BrowserVersion;
  import org.htmlunit.ConfirmHandler;
  import org.htmlunit.ElementNotFoundException;
  import org.htmlunit.Page;
  import org.htmlunit.PrintHandler;
  import org.htmlunit.PromptHandler;
  import org.htmlunit.ScriptException;
  import org.htmlunit.ScriptResult;
  import org.htmlunit.SgmlPage;
  import org.htmlunit.StatusHandler;
  import org.htmlunit.StorageHolder.Type;
  import org.htmlunit.TopLevelWindow;
  import org.htmlunit.WebAssert;
  import org.htmlunit.WebClient;
  import org.htmlunit.WebConsole;
  import org.htmlunit.WebWindow;
  import org.htmlunit.WebWindowNotFoundException;
  import org.htmlunit.corejs.javascript.AccessorSlot;
  import org.htmlunit.corejs.javascript.Context;
  import org.htmlunit.corejs.javascript.EcmaError;
  import org.htmlunit.corejs.javascript.Function;
  import org.htmlunit.corejs.javascript.JavaScriptException;
  import org.htmlunit.corejs.javascript.NativeConsole.Level;
  import org.htmlunit.corejs.javascript.NativeObject;
  import org.htmlunit.corejs.javascript.Scriptable;
  import org.htmlunit.corejs.javascript.ScriptableObject;
  import org.htmlunit.corejs.javascript.Slot;
  import org.htmlunit.css.ComputedCssStyleDeclaration;
  import org.htmlunit.html.BaseFrameElement;
  import org.htmlunit.html.DomElement;
  import org.htmlunit.html.DomNode;
  import org.htmlunit.html.FrameWindow;
  import org.htmlunit.html.HtmlAnchor;
  import org.htmlunit.html.HtmlAttributeChangeEvent;
  import org.htmlunit.html.HtmlButton;
  import org.htmlunit.html.HtmlElement;
  import org.htmlunit.html.HtmlEmbed;
  import org.htmlunit.html.HtmlForm;
  import org.htmlunit.html.HtmlImage;
  import org.htmlunit.html.HtmlInput;
  import org.htmlunit.html.HtmlMap;
  import org.htmlunit.html.HtmlObject;
  import org.htmlunit.html.HtmlPage;
  import org.htmlunit.html.HtmlSelect;
  import org.htmlunit.html.HtmlTextArea;
  import org.htmlunit.javascript.AbstractJavaScriptEngine;
  import org.htmlunit.javascript.HtmlUnitContextFactory;
  import org.htmlunit.javascript.HtmlUnitScriptable;
  import org.htmlunit.javascript.JavaScriptEngine;
  import org.htmlunit.javascript.PostponedAction;
  import org.htmlunit.javascript.configuration.JsxClass;
  import org.htmlunit.javascript.configuration.JsxConstant;
  import org.htmlunit.javascript.configuration.JsxConstructor;
  import org.htmlunit.javascript.configuration.JsxFunction;
  import org.htmlunit.javascript.configuration.JsxGetter;
  import org.htmlunit.javascript.configuration.JsxSetter;
  import org.htmlunit.javascript.host.crypto.Crypto;
  import org.htmlunit.javascript.host.css.ComputedCSSStyleDeclaration;
  import org.htmlunit.javascript.host.css.MediaQueryList;
 import org.htmlunit.javascript.host.css.StyleMedia;
 import org.htmlunit.javascript.host.dom.AbstractList.EffectOnCache;
 import org.htmlunit.javascript.host.dom.DOMException;
 import org.htmlunit.javascript.host.dom.Document;
 import org.htmlunit.javascript.host.dom.Node;
 import org.htmlunit.javascript.host.dom.Selection;
 import org.htmlunit.javascript.host.event.Event;
 import org.htmlunit.javascript.host.event.EventTarget;
 import org.htmlunit.javascript.host.event.MessageEvent;
 import org.htmlunit.javascript.host.event.MouseEvent;
 import org.htmlunit.javascript.host.event.UIEvent;
 import org.htmlunit.javascript.host.html.DocumentProxy;
 import org.htmlunit.javascript.host.html.HTMLCollection;
 import org.htmlunit.javascript.host.html.HTMLDocument;
 import org.htmlunit.javascript.host.html.HTMLElement;
 import org.htmlunit.javascript.host.performance.Performance;
 import org.htmlunit.javascript.host.speech.SpeechSynthesis;
 import org.htmlunit.javascript.host.xml.XMLDocument;
 import org.htmlunit.util.StringUtils;
 import org.htmlunit.util.UrlUtils;
 import org.htmlunit.xml.XmlPage;
 
 /**
  * A JavaScript object for {@code Window}.
  *
  * @author Mike Bowler
  * @author Chen Jun
  * @author David K. Taylor
  * @author Christian Sell
  * @author Darrell DeBoer
  * @author Marc Guillemot
  * @author Dierk Koenig
  * @author Daniel Gredler
  * @author David D. Kilzer
  * @author Chris Erskine
  * @author Ahmed Ashour
  * @author Ronald Brill
  * @author Frank Danek
  * @author Carsten Steul
  * @author Colin Alworth
  * @author Atsushi Nakagawa
  * @author Sven Strickroth
  *
  * @see <a href="http://msdn.microsoft.com/en-us/library/ms535873.aspx">MSDN documentation</a>
  */
 @JsxClass
 @SuppressWarnings("PMD.TooManyFields")
 public class Window extends EventTarget implements WindowOrWorkerGlobalScope, AutoCloseable {
 
     private static final Log LOG = LogFactory.getLog(Window.class);
 
     /** To be documented. */
     @JsxConstant({CHROME, EDGE})
     public static final int TEMPORARY = 0;
 
     /** To be documented. */
     @JsxConstant({CHROME, EDGE})
     public static final int PERSISTENT = 1;
 
     private static final Method GETTER_LENGTH;
     private static final Method SETTER_LENGTH;
     private static final Method GETTER_SELF;
     private static final Method SETTER_SELF;
     private static final Method GETTER_PARENT;
     private static final Method SETTER_PARENT;
     private static final Method GETTER_FRAMES;
     private static final Method SETTER_FRAMES;
 
     static {
         try {
             GETTER_LENGTH = Window.class.getDeclaredMethod("jsGetLength");
             SETTER_LENGTH = Window.class.getDeclaredMethod("jsSetLength", Scriptable.class);
 
             GETTER_SELF = Window.class.getDeclaredMethod("jsGetSelf");
             SETTER_SELF = Window.class.getDeclaredMethod("jsSetSelf", Scriptable.class);
 
             GETTER_PARENT = Window.class.getDeclaredMethod("jsGetParent");
             SETTER_PARENT = Window.class.getDeclaredMethod("jsSetParent", Scriptable.class);
 
             GETTER_FRAMES = Window.class.getDeclaredMethod("jsGetFrames");
             SETTER_FRAMES = Window.class.getDeclaredMethod("jsSetFrames", Scriptable.class);
         }
         catch (NoSuchMethodException | SecurityException e) {
             throw new RuntimeException(e);
         }
     }
 
     private Scriptable lengthShadow_;
     private Scriptable selfShadow_;
     private Scriptable parentShadow_;
     private Scriptable framesShadow_;
 
     private Document document_;
     private DocumentProxy documentProxy_;
     private Navigator navigator_;
     private Object clientInformation_;
     private WebWindow webWindow_;
     private WindowProxy windowProxy_;
     private Screen screen_;
     private History history_;
     private Location location_;
     private Selection selection_;
     private Event currentEvent_;
     private String status_ = "";
     private Map<Class<? extends Scriptable>, Scriptable> prototypes_ = new HashMap<>();
     private Object controllers_;
     private Object opener_;
     private Crypto crypto_;
     private Scriptable performance_;
 
     private final EnumMap<Type, Storage> storages_ = new EnumMap<>(Type.class);
 
     private transient List<AnimationFrame> animationFrames_ = new ArrayList<>();
 
     private static final class AnimationFrame {
         private final long id_;
         private final Function callback_;
 
         AnimationFrame(final long id, final Function callback) {
             id_ = id;
             callback_ = callback;
         }
     }
 
     /**
      * Creates an instance.
      *
      * @param cx the current context
      * @param scope the scope
      * @param args the arguments
      * @param ctorObj the function object
      * @param inNewExpr Is new or not
      * @return the java object to allow JavaScript to access
      */
     @JsxConstructor
     public static Scriptable jsConstructor(final Context cx, final Scriptable scope,
             final Object[] args, final Function ctorObj, final boolean inNewExpr) {
         throw JavaScriptEngine.typeError("Illegal constructor");
     }
 
     /**
      * Restores the transient fields during deserialization.
      * @param stream the stream to read the object from
      * @throws IOException if an IO error occurs
      * @throws ClassNotFoundException if a class is not found
      */
     private void readObject(final ObjectInputStream stream) throws IOException, ClassNotFoundException {
         stream.defaultReadObject();
         animationFrames_ = new ArrayList<>();
     }
 
     /**
      * Returns the prototype object corresponding to the specified HtmlUnit class inside the window scope.
      * @param jsClass the class whose prototype is to be returned
      * @return the prototype object corresponding to the specified class inside the specified scope
      */
     @Override
     public Scriptable getPrototype(final Class<? extends HtmlUnitScriptable> jsClass) {
         return prototypes_.get(jsClass);
     }
 
     /**
      * Sets the prototypes for HtmlUnit host classes.
      * @param map a Map of ({@link Class}, {@link Scriptable})
      */
     public void setPrototypes(final Map<Class<? extends Scriptable>, Scriptable> map) {
         prototypes_ = map;
     }
 
     /**
      * The JavaScript function {@code alert()}.
      * @param message the message
      */
     @JsxFunction
     public void alert(final Object message) {
         // use Object as parameter and perform String conversion by ourself
         // this allows to place breakpoint here and "see" the message object and its properties
         final String stringMessage = JavaScriptEngine.toString(message);
         final AlertHandler handler = getWebWindow().getWebClient().getAlertHandler();
         if (handler == null) {
             if (LOG.isWarnEnabled()) {
                 LOG.warn("window.alert(\"" + stringMessage + "\") no alert handler installed");
             }
         }
         else {
             handler.handleAlert(document_.getPage(), stringMessage);
         }
     }
 
     /**
      * Creates a base-64 encoded ASCII string from a string of binary data.
      * @param stringToEncode string to encode
      * @return the encoded string
      */
     @JsxFunction
     @Override
     public String btoa(final String stringToEncode) {
         return WindowOrWorkerGlobalScopeMixin.btoa(stringToEncode, this);
     }
 
     /**
      * Decodes a string of data which has been encoded using base-64 encoding.
      * @param encodedData the encoded string
      * @return the decoded value
      */
     @JsxFunction
     @Override
     public String atob(final String encodedData) {
         return WindowOrWorkerGlobalScopeMixin.atob(encodedData, this);
     }
 
     /**
      * The JavaScript function {@code confirm}.
      * @param message the message
      * @return true if ok was pressed, false if cancel was pressed
      */
     @JsxFunction
     public boolean confirm(final String message) {
         final ConfirmHandler handler = getWebWindow().getWebClient().getConfirmHandler();
         if (handler == null) {
             if (LOG.isWarnEnabled()) {
                 LOG.warn("window.confirm(\""
                         + message + "\") no confirm handler installed, simulating the OK button");
             }
             return true;
         }
         return handler.handleConfirm(document_.getPage(), message);
     }
 
     /**
      * The JavaScript function {@code prompt}.
      * @param message the message
      * @param defaultValue the default value displayed in the text input field
      * @return the value typed in or {@code null} if the user pressed {@code cancel}
      */
     @JsxFunction
     public String prompt(final String message, Object defaultValue) {
         final PromptHandler handler = getWebWindow().getWebClient().getPromptHandler();
         if (handler == null) {
             if (LOG.isWarnEnabled()) {
                 LOG.warn("window.prompt(\"" + message + "\") no prompt handler installed");
             }
             return null;
         }
         if (JavaScriptEngine.isUndefined(defaultValue)) {
             defaultValue = null;
         }
         else {
             defaultValue = JavaScriptEngine.toString(defaultValue);
         }
         return handler.handlePrompt(document_.getPage(), message, (String) defaultValue);
     }
 
     /**
      * Returns the JavaScript property {@code document}.
      * @return the document
      */
     @JsxGetter(propertyName = "document")
     public DocumentProxy getDocument_js() {
         return documentProxy_;
     }
 
     /**
      * Returns the window's current document.
      * @return the window's current document
      */
     public Document getDocument() {
         return document_;
     }
 
     /**
      * Returns the current event.
      * @return the current event, or {@code null} if no event is currently available
      */
     @JsxGetter
     public Object getEvent() {
         if (currentEvent_ == null) {
             return JavaScriptEngine.UNDEFINED;
         }
         return currentEvent_;
     }
 
     /**
      * Returns the current event (used internally regardless of the emulation mode).
      * @return the current event, or {@code null} if no event is currently available
      */
     public Event getCurrentEvent() {
         return currentEvent_;
     }
 
     /**
      * Sets the current event.
      * @param event the current event
      */
     public void setCurrentEvent(final Event event) {
         currentEvent_ = event;
     }
 
     /**
      * Opens a new window.
      *
      * @param url when a new document is opened, <i>url</i> is a String that specifies a MIME type for the document.
      *        When a new window is opened, <i>url</i> is a String that specifies the URL to render in the new window
      * @param name the name
      * @param features the features
      * @param replace whether to replace in the history list or no
      * @return the newly opened window, or {@code null} if popup windows have been disabled
      * @see org.htmlunit.WebClientOptions#isPopupBlockerEnabled()
      * @see <a href="http://msdn.microsoft.com/en-us/library/ms536651.aspx">MSDN documentation</a>
      */
     @JsxFunction
     public WindowProxy open(final Object url, final Object name, final Object features,
             final Object replace) {
         String urlString = null;
         if (!JavaScriptEngine.isUndefined(url)) {
             urlString = JavaScriptEngine.toString(url);
         }
         String windowName = "";
         if (!JavaScriptEngine.isUndefined(name)) {
             windowName = JavaScriptEngine.toString(name);
         }
         String featuresString = null;
         if (!JavaScriptEngine.isUndefined(features)) {
             featuresString = JavaScriptEngine.toString(features);
         }
         final WebClient webClient = getWebWindow().getWebClient();
 
         if (webClient.getOptions().isPopupBlockerEnabled()) {
             LOG.debug("Ignoring window.open() invocation because popups are blocked.");
             return null;
         }
 
         boolean replaceCurrentEntryInBrowsingHistory = false;
         if (!JavaScriptEngine.isUndefined(replace)) {
             replaceCurrentEntryInBrowsingHistory = JavaScriptEngine.toBoolean(replace);
         }
         if ((featuresString != null || replaceCurrentEntryInBrowsingHistory) && LOG.isDebugEnabled()) {
             LOG.debug(
                    "window.open: features and replaceCurrentEntryInBrowsingHistory "
                     + "not implemented: url=[" + urlString
                     + "] windowName=[" + windowName
                     + "] features=[" + featuresString
                     + "] replaceCurrentEntry=[" + replaceCurrentEntryInBrowsingHistory
                     + "]");
         }
 
         // if specified name is the name of an existing window, then hold it
         if (StringUtils.isEmptyOrNull(urlString) && !StringUtils.isEmptyString(windowName)) {
             try {
                 final WebWindow webWindow = webClient.getWebWindowByName(windowName);
                 return getProxy(webWindow);
             }
             catch (final WebWindowNotFoundException ignored) {
                 // nothing
             }
         }
         final URL newUrl = makeUrlForOpenWindow(urlString);
         final WebWindow newWebWindow = webClient.openWindow(newUrl, windowName, webWindow_);
         return getProxy(newWebWindow);
     }
 
     private URL makeUrlForOpenWindow(final String urlString) {
         if (urlString.isEmpty()) {
             return UrlUtils.URL_ABOUT_BLANK;
         }
 
         try {
             final Page page = getWebWindow().getEnclosedPage();
             if (page != null && page.isHtmlPage()) {
                 return ((HtmlPage) page).getFullyQualifiedUrl(urlString);
             }
             return new URL(urlString);
         }
         catch (final MalformedURLException e) {
             if (LOG.isWarnEnabled()) {
                 LOG.error("Unable to create URL for openWindow: relativeUrl=[" + urlString + "]", e);
             }
             return null;
         }
     }
 
     /**
      * Sets a chunk of JavaScript to be invoked at some specified time later.
      * The invocation occurs only if the window is opened after the delay
      * and does not contain an other page than the one that originated the setTimeout.
      *
      * @see <a href="https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/setTimeout">
      *     MDN web docs</a>
      *
      * @param context the JavaScript context
      * @param scope the scope
      * @param thisObj the scriptable
      * @param args the arguments passed into the method
      * @param function the function
      * @return the id of the created timer
      */
     @JsxFunction
     public static Object setTimeout(final Context context, final Scriptable scope,
             final Scriptable thisObj, final Object[] args, final Function function) {
         return WindowOrWorkerGlobalScopeMixin.setTimeout(context, thisObj, args, function);
     }
 
     /**
      * Sets a chunk of JavaScript to be invoked each time a specified number of milliseconds has elapsed.
      *
      * @see <a href="https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/setInterval">
      *     MDN web docs</a>
      * @param context the JavaScript context
      * @param scope the scope
      * @param thisObj the scriptable
      * @param args the arguments passed into the method
      * @param function the function
      * @return the id of the created interval
      */
     @JsxFunction
     public static Object setInterval(final Context context, final Scriptable scope,
             final Scriptable thisObj, final Object[] args, final Function function) {
         return WindowOrWorkerGlobalScopeMixin.setInterval(context, thisObj, args, function);
     }
 
     /**
      * Cancels a time-out previously set with the
      * {@link #setTimeout(Context, Scriptable, Scriptable, Object[], Function)} method.
      *
      * @param timeoutId identifier for the timeout to clear
      *        as returned by {@link #setTimeout(Context, Scriptable, Scriptable, Object[], Function)}
      */
     @JsxFunction
     public void clearTimeout(final int timeoutId) {
         if (LOG.isDebugEnabled()) {
             LOG.debug("clearTimeout(" + timeoutId + ")");
         }
         getWebWindow().getJobManager().removeJob(timeoutId);
     }
 
     /**
      * Cancels the interval previously started using the
      * {@link #setInterval(Context, Scriptable, Scriptable, Object[], Function)} method.
      * Current implementation does nothing.
      * @param intervalID specifies the interval to cancel as returned by the
      *        {@link #setInterval(Context, Scriptable, Scriptable, Object[], Function)} method
      * @see <a href="http://msdn.microsoft.com/en-us/library/ms536353.aspx">MSDN documentation</a>
      */
     @JsxFunction
     public void clearInterval(final int intervalID) {
         if (LOG.isDebugEnabled()) {
             LOG.debug("clearInterval(" + intervalID + ")");
         }
         getWebWindow().getJobManager().removeJob(intervalID);
     }
 
     /**
      * Returns the JavaScript property {@code navigator}.
      * @return the navigator
      */
     @JsxGetter
     public Navigator getNavigator() {
         return navigator_;
     }
 
     /**
      * Returns the JavaScript property {@code clientInformation}.
      * @return the client information
      */
     @JsxGetter
     public Object getClientInformation() {
         if (clientInformation_ != null) {
             return clientInformation_;
         }
         return navigator_;
     }
 
     /**
      * @param clientInformation the new value
      */
     @JsxSetter({CHROME, EDGE, FF})
     public void setClientInformation(final Object clientInformation) {
         clientInformation_ = clientInformation;
     }
 
     /**
      * Returns the window property. This is a synonym for {@code self}.
      * @return the window property (a reference to <code>this</code>)
      */
     @JsxGetter(propertyName = "window")
     public Window getWindow_js() {
         return this;
     }
 
     /**
      * Returns the {@code localStorage} property.
      * @return the {@code localStorage} property
      */
     @JsxGetter
     public Storage getLocalStorage() {
         return getStorage(Type.LOCAL_STORAGE);
     }
 
     /**
      * Returns the {@code sessionStorage} property.
      * @return the {@code sessionStorage} property
      */
     @JsxGetter
     public Storage getSessionStorage() {
         return getStorage(Type.SESSION_STORAGE);
     }
 
     /**
      * Gets the storage of the specified type.
      * @param storageType the type
      * @return the storage
      */
     public Storage getStorage(final Type storageType) {
         return storages_.computeIfAbsent(storageType,
             k -> {
                 final WebWindow webWindow = getWebWindow();
                 final Map<String, String> store = webWindow.getWebClient().getStorageHolder().
                         getStore(storageType, webWindow.getEnclosedPage());
                 return new Storage(this, store);
             }
         );
     }
 
     /**
      * Returns the {@code location} property.
      * @return the {@code location} property
      */
     @JsxGetter
     public Location getLocation() {
         return location_;
     }
 
     /**
      * Sets the {@code location} property. This will cause a reload of the window.
      * @param newLocation the URL of the new content
      * @throws IOException when location loading fails
      */
     @JsxSetter
     public void setLocation(final String newLocation) throws IOException {
         location_.setHref(newLocation);
     }
 
     /**
      * Logs messages to the browser's standard output (stdout). If the browser was started
      * from a terminal, output sent to dump() will appear in the terminal.
      * Output from dump() is not sent to the browser's developer tools console.
      * To log to the developer tools console, use console.log().
      * <p>
      * HtmlUnit always uses the WebConsole.
      *
      * @param message the message to log
      */
     @JsxFunction({FF, FF_ESR})
     public void dump(final String message) {
         final WebConsole console = getWebWindow().getWebClient().getWebConsole();
         console.print(Context.getCurrentContext(), this, Level.INFO, new String[] {message}, null);
     }
 
     /**
      * Invokes all the animation callbacks registered for this window by
      * calling {@link #requestAnimationFrame(Object)} once.
      * @return the number of pending animation callbacks
      */
     public int animateAnimationsFrames() {
         final List<AnimationFrame> animationFrames = new ArrayList<>(animationFrames_);
         animationFrames_.clear();
 
         final double now = System.nanoTime() / 1_000_000d;
         final Object[] args = {now};
 
         final WebWindow ww = getWindow().getWebWindow();
         final JavaScriptEngine jsEngine = (JavaScriptEngine) ww.getWebClient().getJavaScriptEngine();
 
         for (final AnimationFrame animationFrame : animationFrames) {
             jsEngine.callFunction((HtmlPage) ww.getEnclosedPage(),
                         animationFrame.callback_, this, getParentScope(), args);
         }
         return animationFrames_.size();
     }
 
     /**
      * Add callback to the list of animationFrames.
      * @param callback the function to call when it's time to update the animation
      * @return an identification id
      * @see <a href="https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame">MDN Doc</a>
      */
     @JsxFunction
     public int requestAnimationFrame(final Object callback) {
         if (callback instanceof Function) {
             final int id = animationFrames_.size();
             final AnimationFrame animationFrame = new AnimationFrame(id, (Function) callback);
             animationFrames_.add(animationFrame);
             return id;
         }
         return -1;
     }
 
     /**
      * Remove the callback from the list of animationFrames.
      * @param requestId the ID value returned by the call to window.requestAnimationFrame()
      * @see <a href="https://developer.mozilla.org/en-US/docs/Web/API/Window/cancelAnimationFrame">MDN Doc</a>
      */
     @JsxFunction
     public void cancelAnimationFrame(final Object requestId) {
         final int id = (int) JavaScriptEngine.toNumber(requestId);
 
         animationFrames_.removeIf(animationFrame -> animationFrame.id_ == id);
     }
 
     /**
      * Returns the {@code screen} property.
      * @return the {@code screen} property
      */
     @JsxGetter
     public Screen getScreen() {
         return screen_;
     }
 
     /**
      * Returns the {@code history} property.
      * @return the {@code history} property
      */
     @JsxGetter
     public History getHistory() {
         return history_;
     }
 
     /**
      * Returns the {@code external} property.
      * @return the {@code external} property
      */
     @JsxGetter
     public External getExternal() {
         final External external = new External();
         external.setParentScope(this);
         external.setPrototype(getPrototype(external.getClass()));
         return external;
     }
 
     /**
      * Initializes this window.
      * @param webWindow the web window corresponding to this window
      * @param pageToEnclose the page that will become the enclosing page
      */
     public void initialize(final WebWindow webWindow, final Page pageToEnclose) {
         webWindow_ = webWindow;
         webWindow_.setScriptableObject(this);
 
         defineProperty("length", null, GETTER_LENGTH, SETTER_LENGTH, ScriptableObject.READONLY);
         defineProperty("self", null, GETTER_SELF, SETTER_SELF, ScriptableObject.READONLY);
         defineProperty("parent", null, GETTER_PARENT, SETTER_PARENT, ScriptableObject.READONLY);
         defineProperty("frames", null, GETTER_FRAMES, SETTER_FRAMES, ScriptableObject.READONLY);
 
         windowProxy_ = new WindowProxy(webWindow_);
 
         if (pageToEnclose instanceof XmlPage) {
             document_ = new XMLDocument();
         }
         else {
             document_ = new HTMLDocument();
         }
         document_.setParentScope(this);
         document_.setPrototype(getPrototype(document_.getClass()));
         document_.setWindow(this);
 
         if (pageToEnclose instanceof SgmlPage) {
             final SgmlPage page = (SgmlPage) pageToEnclose;
             document_.setDomNode(page);
 
             if (page.isHtmlPage()) {
                 final HtmlPage htmlPage = (HtmlPage) page;
 
                 htmlPage.addAutoCloseable(this);
             }
         }
 
         documentProxy_ = new DocumentProxy(webWindow_);
 
         navigator_ = new Navigator();
         navigator_.setParentScope(this);
         navigator_.setPrototype(getPrototype(navigator_.getClass()));
 
         screen_ = new Screen(getWebWindow().getScreen());
         screen_.setParentScope(this);
         screen_.setPrototype(getPrototype(screen_.getClass()));
 
         history_ = new History();
         history_.setParentScope(this);
         history_.setPrototype(getPrototype(history_.getClass()));
 
         location_ = new Location();
         location_.setParentScope(this);
         location_.setPrototype(getPrototype(location_.getClass()));
         location_.jsConstructor();
         location_.initialize(this, pageToEnclose);
 
         // like a JS new Object()
         final Context ctx = Context.getCurrentContext();
         controllers_ = ctx.newObject(this);
 
         if (webWindow_ instanceof TopLevelWindow) {
             final WebWindow opener = ((TopLevelWindow) webWindow_).getOpener();
             if (opener != null) {
                 opener_ = opener.getScriptableObject();
             }
         }
     }
 
     /**
      * Initialize the object.
      * @param enclosedPage the page containing the JavaScript
      */
     public void initialize(final Page enclosedPage) {
         if (enclosedPage != null && enclosedPage.isHtmlPage()) {
             final HtmlPage htmlPage = (HtmlPage) enclosedPage;
 
             // Windows don't have corresponding DomNodes so set the domNode
             // variable to be the page. If this isn't set then HtmlUnitScriptable.get()
             // won't work properly
             setDomNode(htmlPage);
             clearEventListenersContainer();
 
             WebAssert.notNull("document_", document_);
             document_.setDomNode(htmlPage);
         }
     }
 
     /**
      * Initializes the object. Only called for Windows with no contents.
      */
     public void initialize() {
         // Empty.
     }
 
     /**
      * Returns the value of the {@code top} property.
      * @return the value of {@code top}
      */
     @JsxGetter
     public Object getTop() {
         final WebWindow top = getWebWindow().getTopWindow();
         return top.getScriptableObject();
     }
 
     /**
      * Returns the value of the {@code opener} property.
      * @return the value of the {@code opener}, or {@code null} for a top level window
      */
     @JsxGetter
     public Object getOpener() {
         Object opener = opener_;
         if (opener instanceof Window) {
             opener = ((Window) opener).windowProxy_;
         }
         return opener;
     }
 
     /**
      * Sets the {@code opener} property.
      * @param newValue the new value
      */
     @JsxSetter
     public void setOpener(final Object newValue) {
         opener_ = newValue;
     }
 
     /**
      * Returns the (i)frame in which the window is contained.
      * @return {@code null} for a top level window
      */
     @JsxGetter
     public HtmlUnitScriptable getFrameElement() {
         final WebWindow window = getWebWindow();
         if (window instanceof FrameWindow) {
             return ((FrameWindow) window).getFrameElement().getScriptableObject();
         }
         return null;
     }
 
     /**
      * Returns the number of frames contained by this window.
      * @return the number of frames contained by this window
      */
     @JsxGetter
     public Object getLength() {
         return JavaScriptEngine.UNDEFINED;
     }
 
     /**
      * Gets the {@code length} property. Setting this shadows the
      * defined value (see https://webidl.spec.whatwg.org/#Replaceable)
      * @return the shadow value if set otherwise the number of frames
      */
     public Object jsGetLength() {
         if (lengthShadow_ != null) {
             return lengthShadow_;
         }
 
         final HTMLCollection frames = getFrames();
         if (frames != null) {
             return frames.getLength();
         }
         return 0;
     }
 
     /**
      * Sets the {@code length} property. Setting this shadows the
      * defined value (see https://webidl.spec.whatwg.org/#Replaceable)
      * @param lengthShadow the value to overwrite the defined property value
      */
     public void jsSetLength(final Scriptable lengthShadow) {
         lengthShadow_ = lengthShadow;
     }
 
     /**
      * Returns the {@code self} property.
      * @return this
      */
     @JsxGetter
     public Object getSelf() {
         return JavaScriptEngine.UNDEFINED;
     }
 
     /**
      * Gets the {@code self} property. Setting this shadows the
      * defined value (see https://webidl.spec.whatwg.org/#Replaceable)
      * @return the shadow value if set otherwise the number of frames
      */
     public Object jsGetSelf() {
         if (selfShadow_ != null) {
             return selfShadow_;
         }
 
         return this;
     }
 
     /**
      * Sets the {@code self} property. Setting this shadows the
      * defined value (see https://webidl.spec.whatwg.org/#Replaceable)
      * @param selfShadow the value to overwrite the defined property value
      */
     public void jsSetSelf(final Scriptable selfShadow) {
         selfShadow_ = selfShadow;
     }
 
     /**
      * Returns the value of the {@code parent} property.
      * @return the value of the {@code parent} property
      */
     @JsxGetter
     public Object getParent() {
         return JavaScriptEngine.UNDEFINED;
     }
 
     /**
      * Gets the {@code parent} property. Setting this shadows the
      * defined value (see https://webidl.spec.whatwg.org/#Replaceable)
      * @return the shadow value if set otherwise the number of frames
      */
     public Object jsGetParent() {
         if (parentShadow_ != null) {
             return parentShadow_;
         }
 
         final WebWindow parent = getWebWindow().getParentWindow();
         return parent.getScriptableObject();
     }
 
     /**
      * Sets the {@code parent} property. Setting this shadows the
      * defined value (see https://webidl.spec.whatwg.org/#Replaceable)
      * @param parentShadow the value to overwrite the defined property value
      */
     public void jsSetParent(final Scriptable parentShadow) {
         parentShadow_ = parentShadow;
     }
 
     /**
      * Returns the value of the {@code frames} property.
      * @return the value of the {@code frames} property
      */
     @JsxGetter(propertyName = "frames")
     public Object getFrames_js() {
         return JavaScriptEngine.UNDEFINED;
     }
 
     /**
      * Gets the {@code frames} property. Setting this shadows the
      * defined value (see https://webidl.spec.whatwg.org/#Replaceable)
      * @return the shadow value if set otherwise the number of frames
      */
     public Object jsGetFrames() {
         if (framesShadow_ != null) {
             return framesShadow_;
         }
 
         return this;
     }
 
     /**
      * Sets the {@code frames} property. Setting this shadows the
      * defined value (see https://webidl.spec.whatwg.org/#Replaceable)
      * @param framesShadow the value to overwrite the defined property value
      */
     public void jsSetFrames(final Scriptable framesShadow) {
         framesShadow_ = framesShadow;
     }
 
     /**
      * Returns the live collection of frames contained by this window.
      * @return the live collection of frames contained by this window
      */
     private HTMLCollection getFrames() {
         final Page page = getWebWindow().getEnclosedPage();
         if (page instanceof HtmlPage) {
             return new HTMLCollectionFrames((HtmlPage) page);
         }
         return null;
     }
 
     /**
      * Returns the WebWindow associated with this Window.
      * @return the WebWindow
      */
     public WebWindow getWebWindow() {
         return webWindow_;
     }
 
     /**
      * Sets the focus to this element.
      */
     @JsxFunction
     public void focus() {
         final WebWindow window = getWebWindow();
         window.getWebClient().setCurrentWindow(window);
     }
 
     /**
      * Removes focus from this element.
      */
     @JsxFunction
     public void blur() {
         LOG.debug("window.blur() not implemented");
     }
 
     /**
      * Closes this window.
      */
     @JsxFunction(functionName = "close")
     public void close_js() {
         final WebWindow webWindow = getWebWindow();
         if (webWindow instanceof TopLevelWindow) {
             ((TopLevelWindow) webWindow).close();
         }
         else {
             webWindow.getWebClient().deregisterWebWindow(webWindow);
         }
     }
 
     /**
      * Indicates if this window is closed.
      * @return {@code true} if this window is closed
      */
     @JsxGetter
     public boolean isClosed() {
         final WebWindow webWindow = getWebWindow();
         return !webWindow.getWebClient().containsWebWindow(webWindow);
     }
 
     /**
      * Does nothing.
      * @param x the horizontal position
      * @param y the vertical position
      */
     @JsxFunction
     public void moveTo(final int x, final int y) {
         LOG.debug("window.moveTo() not implemented");
     }
 
     /**
      * Does nothing.
      * @param x the horizontal position
      * @param y the vertical position
      */
     @JsxFunction
     public void moveBy(final int x, final int y) {
         LOG.debug("window.moveBy() not implemented");
     }
 
     /**
      * Does nothing.
      * @param width the width offset
      * @param height the height offset
      */
     @JsxFunction
     public void resizeBy(final int width, final int height) {
         LOG.debug("window.resizeBy() not implemented");
     }
 
     /**
      * Does nothing.
      * @param width the width of the Window in pixel after resize
      * @param height the height of the Window in pixel after resize
      */
     @JsxFunction
     public void resizeTo(final int width, final int height) {
         LOG.debug("window.resizeTo() not implemented");
     }
 
     /**
      * Scrolls to the specified location on the page.
      * @param x the horizontal position to scroll to
      * @param y the vertical position to scroll to
      */
     @JsxFunction
     public void scroll(final Scriptable x, final Scriptable y) {
         scrollTo(x, y);
     }
 
     /**
      * Scrolls the window content the specified distance.
      * @param x the horizontal distance to scroll by
      * @param y the vertical distance to scroll by
      */
     @JsxFunction
     public void scrollBy(final Scriptable x, final Scriptable y) {
         final HTMLElement body = document_.getBody();
         if (body != null) {
             int xOff = 0;
             int yOff = 0;
             if (y != null) {
                 xOff = JavaScriptEngine.toInt32(x);
                 yOff = JavaScriptEngine.toInt32(y);
             }
             else {
                 if (!(x instanceof NativeObject)) {
                     throw JavaScriptEngine.typeError("eee");
                 }
                 if (x.has("left", x)) {
                     xOff = JavaScriptEngine.toInt32(x.get("left", x));
                 }
                 if (x.has("top", x)) {
                     yOff = JavaScriptEngine.toInt32(x.get("top", x));
                 }
             }
 
             body.setScrollLeft(body.getScrollLeft() + xOff);
             body.setScrollTop(body.getScrollTop() + yOff);
 
             fireScrollEvent(body);
         }
 
         fireScrollEvent(document_);
     }
 
     private void fireScrollEvent(final Node node) {
         final Event event;
         if (getBrowserVersion().hasFeature(EVENT_SCROLL_UIEVENT)) {
             event = new UIEvent(node, Event.TYPE_SCROLL);
         }
         else {
             event = new Event(node, Event.TYPE_SCROLL);
             event.setCancelable(false);
         }
         node.fireEvent(event);
     }
 
     /**
      * Scrolls the window content down by the specified number of lines.
      * @param lines the number of lines to scroll down
      */
     @JsxFunction({FF, FF_ESR})
     public void scrollByLines(final int lines) {
         final HTMLElement body = document_.getBody();
         if (body != null) {
             body.setScrollTop(body.getScrollTop() + (19 * lines));
 
             fireScrollEvent(body);
         }
 
         fireScrollEvent(document_);
     }
 
     /**
      * Scrolls the window content down by the specified number of pages.
      * @param pages the number of pages to scroll down
      */
     @JsxFunction({FF, FF_ESR})
     public void scrollByPages(final int pages) {
         final HTMLElement body = document_.getBody();
         if (body != null) {
             body.setScrollTop(body.getScrollTop() + (getInnerHeight() * pages));
 
             fireScrollEvent(body);
         }
 
         fireScrollEvent(document_);
     }
 
     /**
      * Scrolls to the specified location on the page.
      * @param x the horizontal position to scroll to
      * @param y the vertical position to scroll to
      */
     @JsxFunction
     public void scrollTo(final Scriptable x, final Scriptable y) {
         final HTMLElement body = document_.getBody();
         if (body != null) {
             int xOff;
             int yOff;
             if (y != null) {
                 xOff = JavaScriptEngine.toInt32(x);
                 yOff = JavaScriptEngine.toInt32(y);
             }
             else {
                 if (!(x instanceof NativeObject)) {
                     throw JavaScriptEngine.typeError("eee");
                 }
 
                 xOff = body.getScrollLeft();
                 yOff = body.getScrollTop();
 
                 if (x.has("left", x)) {
                     xOff = JavaScriptEngine.toInt32(x.get("left", x));
                 }
                 if (x.has("top", x)) {
                     yOff = JavaScriptEngine.toInt32(x.get("top", x));
                 }
             }
             body.setScrollLeft(xOff);
             body.setScrollTop(yOff);
 
             fireScrollEvent(body);
         }
 
         fireScrollEvent(document_);
     }
 
     /**
      * Returns the {@code onload} property. Note that this is not necessarily a function if something else has been set.
      * @return the {@code onload} property
      */
     @JsxGetter
     public Function getOnload() {
         return getEventHandler(Event.TYPE_LOAD);
     }
 
     /**
      * Sets the value of the {@code onload} event handler.
      * @param onload the new handler
      */
     @JsxSetter
     public void setOnload(final Object onload) {
         setHandlerForJavaScript(Event.TYPE_LOAD, onload);
     }
 
     /**
      * Sets the value of the {@code onblur} event handler.
      * @param onblur the new handler
      */
     @JsxSetter
     public void setOnblur(final Object onblur) {
         setHandlerForJavaScript(Event.TYPE_BLUR, onblur);
     }
 
     /**
      * Returns the {@code onblur} property (not necessary a function if something else has been set).
      * @return the {@code onblur} property
      */
     @JsxGetter
     public Function getOnblur() {
         return getEventHandler(Event.TYPE_BLUR);
     }
 
     /**
      * Returns the {@code onclick} property (not necessary a function if something else has been set).
      * @return the {@code onclick} property
      */
     @JsxGetter
     public Function getOnclick() {
         return getEventHandler(MouseEvent.TYPE_CLICK);
     }
 
     /**
      * Sets the value of the {@code onclick} event handler.
      * @param onclick the new handler
      */
     @JsxSetter
     public void setOnclick(final Object onclick) {
         setHandlerForJavaScript(MouseEvent.TYPE_CLICK, onclick);
     }
 
     /**
      * Returns the {@code ondblclick} property (not necessary a function if something else has been set).
      * @return the {@code ondblclick} property
      */
     @JsxGetter
     public Function getOndblclick() {
         return getEventHandler(MouseEvent.TYPE_DBL_CLICK);
     }
 
     /**
      * Sets the value of the {@code ondblclick} event handler.
      * @param ondblclick the new handler
      */
     @JsxSetter
     public void setOndblclick(final Object ondblclick) {
         setHandlerForJavaScript(MouseEvent.TYPE_DBL_CLICK, ondblclick);
     }
 
     /**
      * Returns the {@code onhashchange} property (not necessary a function if something else has been set).
      * @return the {@code onhashchange} property
      */
     @JsxGetter
     public Function getOnhashchange() {
         return getEventHandler(Event.TYPE_HASH_CHANGE);
     }
 
     /**
      * Sets the value of the {@code onhashchange} event handler.
      * @param onhashchange the new handler
      */
     @JsxSetter
     public void setOnhashchange(final Object onhashchange) {
         setHandlerForJavaScript(Event.TYPE_HASH_CHANGE, onhashchange);
     }
 
     /**
      * Returns the value of the window's {@code name} property.
      * @return the value of the window's {@code name} property
      */
     @JsxGetter
     public String getName() {
         return getWebWindow().getName();
     }
 
      /**
       * Sets the value of the window's {@code name} property.
       * @param name the value of the window's {@code name} property
       */
     @JsxSetter
     public void setName(final String name) {
         getWebWindow().setName(name);
     }
 
     /**
      * Returns the value of the window's {@code onbeforeunload} property.
      * @return the value of the window's {@code onbeforeunload} property
      */
     @JsxGetter
     public Function getOnbeforeunload() {
         return getEventHandler(Event.TYPE_BEFORE_UNLOAD);
     }
 
     /**
      * Sets the value of the window's {@code onbeforeunload} property.
      * @param onbeforeunload the value of the window's {@code onbeforeunload} property
      */
     @JsxSetter
     public void setOnbeforeunload(final Object onbeforeunload) {
         setHandlerForJavaScript(Event.TYPE_BEFORE_UNLOAD, onbeforeunload);
     }
 
     /**
      * Returns the value of the window's {@code onerror} property.
      * @return the value of the window's {@code onerror} property
      */
     @JsxGetter
     public Function getOnerror() {
         return getEventHandler(Event.TYPE_ERROR);
     }
 
     /**
      * Sets the value of the window's {@code onerror} property.
      * @param onerror the value of the window's {@code onerror} property
      */
     @JsxSetter
     public void setOnerror(final Object onerror) {
         setHandlerForJavaScript(Event.TYPE_ERROR, onerror);
     }
 
     /**
      * Returns the value of the window's {@code onmessage} property.
      * @return the value of the window's {@code onmessage} property
      */
     @JsxGetter
     public Function getOnmessage() {
         return getEventHandler(Event.TYPE_MESSAGE);
     }
 
     /**
      * Sets the value of the window's {@code onmessage} property.
      * @param onmessage the value of the window's {@code onmessage} property
      */
     @JsxSetter
     public void setOnmessage(final Object onmessage) {
         setHandlerForJavaScript(Event.TYPE_MESSAGE, onmessage);
     }
 
     /**
      * Triggers the {@code onerror} handler, if one has been set.
      * @param e the error that needs to be reported
      */
     public void triggerOnError(final ScriptException e) {
         final Function f = getOnerror();
         if (f != null) {
             String msg = e.getMessage();
             final String url = e.getPage().getUrl().toExternalForm();
 
             final int line = e.getFailingLineNumber();
             final int column = e.getFailingColumnNumber();
 
             Object jsError = e.getMessage();
             if (e.getCause() instanceof JavaScriptException) {
                 msg = "uncaught exception: " + e.getCause().getMessage();
                 jsError = ((JavaScriptException) e.getCause()).getValue();
             }
             else if (e.getCause() instanceof EcmaError) {
                 msg = "uncaught " + e.getCause().getMessage();
 
                 final EcmaError ecmaError = (EcmaError) e.getCause();
                 final Scriptable err = Context.getCurrentContext().newObject(this, "Error");
                 ScriptableObject.putProperty(err, "message", ecmaError.getMessage());
                 ScriptableObject.putProperty(err, "fileName", ecmaError.sourceName());
                 ScriptableObject.putProperty(err, "lineNumber", Integer.valueOf(ecmaError.lineNumber()));
                 jsError = err;
             }
 
             final Object[] args = {msg, url, Integer.valueOf(line), Integer.valueOf(column), jsError};
             f.call(Context.getCurrentContext(), this, this, args);
         }
     }
 
     private void setHandlerForJavaScript(final String eventName, final Object handler) {
         getEventListenersContainer().setEventHandler(eventName, handler);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     protected Object getWithPreemption(final String name) {
         final DomNode domNode = getDomNodeOrNull();
         if (domNode == null) {
             return NOT_FOUND;
         }
 
         // May be attempting to retrieve a frame by name.
         final HtmlPage page = (HtmlPage) domNode.getPage();
         Object result = getFrameWindowByName(page, name);
 
         if (result == NOT_FOUND) {
             result = getElementsByName(page, name);
 
             if (result == NOT_FOUND) {
                 // May be attempting to retrieve element by ID (try map-backed operation again instead of XPath).
                 try {
                     final HtmlElement htmlElement = page.getHtmlElementById(name);
                     result = getScriptableFor(htmlElement);
                 }
                 catch (final ElementNotFoundException e) {
                     result = NOT_FOUND;
                 }
             }
         }
 
         if (result instanceof Window) {
             final WebWindow webWindow = ((Window) result).getWebWindow();
             result = getProxy(webWindow);
         }
 
         return result;
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public Object get(final int index, final Scriptable start) {
         if (index < 0 || getWebWindow() == null) {
             return JavaScriptEngine.UNDEFINED;
         }
 
         final HTMLCollection frames = getFrames();
         if (frames == null || index >= frames.getLength()) {
             return JavaScriptEngine.UNDEFINED;
         }
         return frames.item(Integer.valueOf(index));
     }
 
     private static Object getFrameWindowByName(final HtmlPage page, final String name) {
         try {
             return page.getFrameByName(name).getScriptableObject();
         }
         catch (final ElementNotFoundException e) {
             return NOT_FOUND;
         }
     }
 
     private Object getElementsByName(final HtmlPage page, final String name) {
 
         // May be attempting to retrieve element(s) by name. IMPORTANT: We're using map-backed operations
         // like getHtmlElementsByName() and getHtmlElementById() as much as possible, so as to avoid XPath
         // overhead. We only use an XPath-based operation when we have to (where there is more than one
         // matching element). This optimization appears to improve performance in certain situations by ~15%
         // vs using XPath-based operations throughout.
         final List<DomElement> elements = page.getElementsByName(name);
 
         final Filter filter = new Filter(false);
 
         elements.removeIf(domElement -> !filter.matches(domElement));
 
         if (elements.isEmpty()) {
             return NOT_FOUND;
         }
 
         if (elements.size() == 1) {
             return getScriptableFor(elements.get(0));
         }
 
         // Null must be changed to '' for proper collection initialization.
         final String expElementName = "null".equals(name) ? "" : name;
 
         final HTMLCollection coll = new HTMLCollection(page, true);
         coll.setElementsSupplier(
                 (Supplier<List<DomNode>> & Serializable)
                 () -> {
                     final List<DomElement> expElements = page.getElementsByName(expElementName);
                     final List<DomNode> result = new ArrayList<>(expElements.size());
 
                     for (final DomElement domElement : expElements) {
                         if (filter.matches(domElement)) {
                             result.add(domElement);
                         }
                     }
                     return result;
                 });
 
         coll.setEffectOnCacheFunction(
                 (java.util.function.Function<HtmlAttributeChangeEvent, EffectOnCache> & Serializable)
                 event -> {
                     if ("name".equals(event.getName())) {
                         return EffectOnCache.RESET;
                     }
                     return EffectOnCache.NONE;
                 });
 
         return coll;
     }
 
     /**
      * Returns the proxy for the specified window.
      * @param w the window whose proxy is to be returned
      * @return the proxy for the specified window
      */
     public static WindowProxy getProxy(final WebWindow w) {
         return ((Window) w.getScriptableObject()).windowProxy_;
     }
 
     /**
      * Returns the text from the status line.
      * @return the status line text
      */
     @JsxGetter
     public String getStatus() {
         return status_;
     }
 
     /**
      * Sets the text from the status line.
      * @param message the status line text
      */
     @JsxSetter
     public void setStatus(final String message) {
         status_ = message;
 
         final StatusHandler statusHandler = webWindow_.getWebClient().getStatusHandler();
         if (statusHandler != null) {
             statusHandler.statusMessageChanged(webWindow_.getEnclosedPage(), message);
         }
     }
 
     /**
      * Returns the {@code innerWidth}.
      * @return the {@code innerWidth}
      * @see <a href="http://www.mozilla.org/docs/dom/domref/dom_window_ref28.html">Mozilla doc</a>
      */
     @JsxGetter
     public int getInnerWidth() {
         return getWebWindow().getInnerWidth();
     }
 
     /**
      * Sets the {@code innerWidth}.
      * @param width the {@code innerWidth}
      */
     @JsxSetter
     public void setInnerWidth(final int width) {
         getWebWindow().setInnerWidth(width);
     }
 
     /**
      * Returns the {@code outerWidth}.
      * @return the {@code outerWidth}
      * @see <a href="http://www.mozilla.org/docs/dom/domref/dom_window_ref79.html">Mozilla doc</a>
      */
     @JsxGetter
     public int getOuterWidth() {
         return getWebWindow().getOuterWidth();
     }
 
     /**
      * Sets the {@code outerWidth}.
      * @param width the {@code outerWidth}
      */
     @JsxSetter
     public void setOuterWidth(final int width) {
         getWebWindow().setOuterWidth(width);
     }
 
     /**
      * Returns the {@code innerHeight}.
      * @return the {@code innerHeight}
      * @see <a href="http://www.mozilla.org/docs/dom/domref/dom_window_ref27.html">Mozilla doc</a>
      */
     @JsxGetter
     public int getInnerHeight() {
         return getWebWindow().getInnerHeight();
     }
 
     /**
      * Sets the {@code innerHeight}.
      * @param height the {@code innerHeight}
      */
     @JsxSetter
     public void setInnerHeight(final int height) {
         getWebWindow().setInnerHeight(height);
     }
 
     /**
      * Returns the {@code outerHeight}.
      * @return the {@code outerHeight}
      * @see <a href="http://www.mozilla.org/docs/dom/domref/dom_window_ref78.html">Mozilla doc</a>
      */
     @JsxGetter
     public int getOuterHeight() {
         return getWebWindow().getOuterHeight();
     }
 
     /**
      * Sets the {@code outerHeight}.
      * @param height the {@code outerHeight}
      */
     @JsxSetter
     public void setOuterHeight(final int height) {
         getWebWindow().setOuterHeight(height);
     }
 
     /**
      * Prints the current page. The current implementation uses the {@link PrintHandler}
      * defined for the {@link WebClient} to process the window.
      * @see <a href="http://www.mozilla.org/docs/dom/domref/dom_window_ref85.html">
      *     Mozilla documentation</a>
      * @see <a href="http://msdn.microsoft.com/en-us/library/ms536672.aspx">MSDN documentation</a>
      */
     @JsxFunction
     public void print() {
         final PrintHandler handler = getWebWindow().getWebClient().getPrintHandler();
         if (handler == null) {
             LOG.info("No PrintHandler installed - window.print() ignored");
             return;
         }
 
         final SgmlPage sgmlPage = getDocument().getPage();
         if (!(sgmlPage instanceof HtmlPage)) {
             LOG.debug("Page is not an HtmlPage - window.print() ignored");
             return;
         }
 
         Event event = new Event(this, Event.TYPE_BEFOREPRINT);
         fireEvent(event);
 
         final HtmlPage page = (HtmlPage) sgmlPage;
         page.setPrinting(true);
         try {
             handler.handlePrint(page);
         }
         finally {
             page.setPrinting(false);
         }
         event = new Event(this, Event.TYPE_AFTERPRINT);
         fireEvent(event);
     }
 
     /**
      * Does nothing special anymore.
      * @param type the type of events to capture
      * @see HTMLDocument#captureEvents(String)
      */
     @JsxFunction
     public void captureEvents(final String type) {
         // Empty.
     }
 
     /**
      * Does nothing special anymore.
      * @param type the type of events to capture
      * @see HTMLDocument#releaseEvents(String)
      */
     @JsxFunction
     public void releaseEvents(final String type) {
         // Empty.
     }
 
     /**
      * Returns computed style of the element. Computed style represents the final computed values
      * of all CSS properties for the element. This method's return value is of the same type as
      * that of <code>element.style</code>, but the value returned by this method is read-only.
      *
      * @param element the element
      * @param pseudoElement a string specifying the pseudo-element to match (may be {@code null});
      *        e.g. ':before'
      * @return the computed style
      */
     @JsxFunction
     public ComputedCSSStyleDeclaration getComputedStyle(final Object element, final String pseudoElement) {
         if (!(element instanceof Element)) {
             throw JavaScriptEngine.typeError("parameter 1 is not of type 'Element'");
         }
         final Element e = (Element) element;
 
         final ComputedCssStyleDeclaration style = getWebWindow().getComputedStyle(e.getDomNodeOrDie(), pseudoElement);
         return new ComputedCSSStyleDeclaration(e, style);
     }
 
     /**
      * Returns the current selection.
      * @return the current selection
      */
     @JsxFunction
     public Selection getSelection() {
         final WebWindow webWindow = getWebWindow();
         // return null if the window is in a frame that is not displayed
         if (webWindow instanceof FrameWindow) {
             final FrameWindow frameWindow = (FrameWindow) webWindow;
             if (getBrowserVersion().hasFeature(JS_WINDOW_SELECTION_NULL_IF_INVISIBLE)
                     && !frameWindow.getFrameElement().isDisplayed()) {
                 return null;
             }
         }
         return getSelectionImpl();
     }
 
     /**
      * Returns the current selection.
      * @return the current selection
      */
     public Selection getSelectionImpl() {
         if (selection_ == null) {
             selection_ = new Selection();
             selection_.setParentScope(this);
             selection_.setPrototype(getPrototype(selection_.getClass()));
         }
         return selection_;
     }
 
     /**
      * Gets the {@code controllers}. The result doesn't currently matter but it is important to return an
      * object as some JavaScript libraries check it.
      * @see <a href="https://developer.mozilla.org/En/DOM/Window.controllers">Mozilla documentation</a>
      * @return some object
      */
     @JsxGetter({FF, FF_ESR})
     public Object getControllers() {
         return controllers_;
     }
 
     /**
      * Sets the {@code controllers}.
      * @param value the new value
      */
     @JsxSetter({FF, FF_ESR})
     public void setControllers(final Object value) {
         controllers_ = value;
     }
 
     /**
      * Returns the value of {@code mozInnerScreenX} property.
      * @return the value of {@code mozInnerScreenX} property
      */
     @JsxGetter(FF)
     public int getMozInnerScreenX() {
         return 12;
     }
 
     /**
      * Returns the value of {@code mozInnerScreenX} property.
      * @return the value of {@code mozInnerScreenX} property
      */
     @JsxGetter(value = FF_ESR, propertyName = "mozInnerScreenX")
     public int getMozInnerScreenXffesr_js() {
         return 10;
     }
 
     /**
      * Returns the value of {@code mozInnerScreenY} property.
      * @return the value of {@code mozInnerScreenY} property
      */
     @JsxGetter({FF, FF_ESR})
     public int getMozInnerScreenY() {
         return 89;
     }
 
     private static final class Filter {
         private final boolean includeFormFields_;
 
         Filter(final boolean includeFormFields) {
             includeFormFields_ = includeFormFields;
         }
 
         boolean matches(final Object object) {
             if (object instanceof HtmlEmbed
                 || object instanceof HtmlForm
                 || object instanceof HtmlImage
                 || object instanceof HtmlObject) {
                 return true;
             }
 
             return includeFormFields_
                     && (object instanceof HtmlAnchor
                         || object instanceof HtmlButton
                         || object instanceof HtmlInput
                         || object instanceof HtmlMap
                         || object instanceof HtmlSelect
                         || object instanceof HtmlTextArea);
         }
     }
 
     /**
      * Should implement the stop() function on the window object.
      * (currently empty implementation)
      * @see <a href="https://developer.mozilla.org/en/DOM/window.stop">window.stop</a>
      */
     @JsxFunction
     public void stop() {
         //empty
     }
 
     /**
      * Returns the value of {@code pageXOffset} property.
      * @return the value of {@code pageXOffset} property
      */
     @JsxGetter
     public int getPageXOffset() {
         return 0;
     }
 
     /**
      * Returns the value of {@code pageYOffset} property.
      * @return the value of {@code pageYOffset} property
      */
     @JsxGetter
     public int getPageYOffset() {
         return 0;
     }
 
     /**
      * Returns the value of {@code scrollX} property.
      * @return the value of {@code scrollX} property
      */
     @JsxGetter
     public int getScrollX() {
         return 0;
     }
 
     /**
      * Returns the value of {@code scrollY} property.
      * @return the value of {@code scrollY} property
      */
     @JsxGetter
     public int getScrollY() {
         return 0;
     }
 
     /**
      * @return the value of {@code netscape} property
      */
     @JsxGetter({FF, FF_ESR})
     public Netscape getNetscape() {
         return new Netscape(this);
     }
 
     /**
      * {@inheritDoc}
      * Used to allow re-declaration of constants (eg: "var undefined;").
      */
     @Override
     public boolean isConst(final String name) {
         if ("undefined".equals(name) || "Infinity".equals(name) || "NaN".equals(name)) {
             return false;
         }
 
         return super.isConst(name);
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public boolean dispatchEvent(final Event event) {
         event.setTarget(this);
         final ScriptResult result = fireEvent(event);
         return !event.isAborted(result);
     }
 
     /**
      * Getter for the {@code onchange} event handler.
      * @return the handler
      */
     @JsxGetter
     public Function getOnchange() {
         return getEventHandler(Event.TYPE_CHANGE);
     }
 
     /**
      * Setter for the {@code onchange} event handler.
      * @param onchange the handler
      */
     @JsxSetter
     public void setOnchange(final Object onchange) {
         setHandlerForJavaScript(Event.TYPE_CHANGE, onchange);
     }
 
     /**
      * Getter for the {@code onsubmit} event handler.
      * @return the handler
      */
     @JsxGetter
     public Function getOnsubmit() {
         return getEventHandler(Event.TYPE_SUBMIT);
     }
 
     /**
      * Setter for the {@code onsubmit} event handler.
      * @param onsubmit the handler
      */
     @JsxSetter
     public void setOnsubmit(final Object onsubmit) {
         setHandlerForJavaScript(Event.TYPE_SUBMIT, onsubmit);
     }
 
     /**
      * Posts a message.
      * @param context the current context
      * @param scope the scope
      * @param thisObj this object
      * @param args the script(s) to import
      * @param funObj the JS function called
      * @see <a href="https://developer.mozilla.org/en-US/docs/Web/API/window.postMessage">MDN documentation</a>
      */
     @JsxFunction
     public static void postMessage(final Context context, final Scriptable scope,
             final Scriptable thisObj, final Object[] args, final Function funObj) {
 
         // support the structured clone algorithm
         if (args.length < 1) {
             throw JavaScriptEngine.typeError("message not provided");
         }
         final Object message = args[0];
 
         String targetOrigin = "*";
         Object transfer = JavaScriptEngine.UNDEFINED;
 
         if (args.length > 1) {
             if (JavaScriptEngine.isArray(args[1])) {
                 transfer = args[1];
             }
             else {
                 targetOrigin = JavaScriptEngine.toString(args[1]);
             }
         }
 
         if (args.length > 2) {
             if (JavaScriptEngine.isArray(args[2])) {
                 transfer = args[2];
             }
         }
 
         final Window sender = (Window) scope;
         final Window receiver = (Window) thisObj;
         final URL receiverURL = receiver.getWebWindow().getEnclosedPage().getUrl();
 
         final WebWindow webWindow = sender.getWebWindow();
         final Page page = webWindow.getEnclosedPage();
         final URL senderURL = page.getUrl();
 
         if (!StringUtils.equalsChar('*', targetOrigin)) {
             final URL targetURL;
             if (StringUtils.equalsChar('/', targetOrigin)) {
                 targetURL = senderURL;
             }
             else {
                 try {
                     targetURL = new URL(targetOrigin);
                 }
                 catch (final Exception e) {
                     throw JavaScriptEngine.asJavaScriptException(
                             (HtmlUnitScriptable) getTopLevelScope(thisObj),
                             "Failed to execute 'postMessage' on 'Window': Invalid target origin '"
                                     + targetOrigin + "' was specified (reason: " + e.getMessage() + ".",
                             DOMException.SYNTAX_ERR);
                 }
             }
 
             if (getPort(targetURL) != getPort(receiverURL)) {
                 return;
             }
             if (!targetURL.getHost().equals(receiverURL.getHost())) {
                 return;
             }
             if (!targetURL.getProtocol().equals(receiverURL.getProtocol())) {
                 return;
             }
         }
 
         final String origin;
         try {
             final URL originUrl = UrlUtils.getUrlWithoutPathRefQuery(senderURL);
             origin = UrlUtils.removeRedundantPort(originUrl).toExternalForm();
         }
         catch (final MalformedURLException e) {
             throw JavaScriptEngine.throwAsScriptRuntimeEx(e);
         }
 
         final MessageEvent event = new MessageEvent();
         event.initMessageEvent(Event.TYPE_MESSAGE, false, false, message, origin, "", sender, transfer);
         event.setParentScope(scope);
         event.setPrototype(receiver.getPrototype(event.getClass()));
 
         final AbstractJavaScriptEngine<?> jsEngine = webWindow.getWebClient().getJavaScriptEngine();
         final PostponedAction action = new PostponedAction(page, "Window.postMessage") {
             @Override
             public void execute() {
                 final HtmlUnitContextFactory cf = jsEngine.getContextFactory();
                 cf.call(cx -> receiver.dispatchEvent(event));
             }
         };
         jsEngine.addPostponedAction(action);
     }
 
     /**
      * Returns the port of the specified URL.
      * @param url the URL
      * @return the port
      */
     public static int getPort(final URL url) {
         int port = url.getPort();
         if (port == -1) {
             if ("http".equals(url.getProtocol())) {
                 port = 80;
             }
             else {
                 port = 443;
             }
         }
         return port;
     }
 
     /**
      * The performance attribute is defined as replacable
      * (https://w3c.github.io/hr-time/#the-performance-attribute) but not implemented
      * as that.
      * @return the value of the {@code performance} property
      */
     @JsxGetter
     public Scriptable getPerformance() {
         if (performance_ == null) {
             final Performance performance = new Performance();
             performance.setParentScope(this);
             performance.setPrototype(getPrototype(performance.getClass()));
             performance_ = performance;
         }
         return performance_;
     }
 
     /**
      * The performance attribute is defined as replacable
      * (https://w3c.github.io/hr-time/#the-performance-attribute) but not implemented
      * as that.
      * <p>
      * Sets the {@code performance} property.
      * @param performance the value to overwrite the defined property value
      */
     @JsxSetter
     public void setPerformance(final Scriptable performance) {
         performance_ = performance;
     }
 
     /**
      * Returns the {@code devicePixelRatio} property.
      * @return the {@code devicePixelRatio} property
      */
     @JsxGetter
     public int getDevicePixelRatio() {
         return 1;
     }
 
     /**
      * Returns the {@code styleMedia} property.
      * @return the {@code styleMedia} property
      */
     @JsxGetter({CHROME, EDGE})
     public StyleMedia getStyleMedia() {
         final StyleMedia styleMedia = new StyleMedia();
         styleMedia.setParentScope(this);
         styleMedia.setPrototype(getPrototype(styleMedia.getClass()));
         return styleMedia;
     }
 
     /**
      * Returns a new MediaQueryList object representing the parsed results of the specified media query string.
      *
      * @param mediaQueryString the media query
      * @return a new MediaQueryList object
      */
     @JsxFunction
     public MediaQueryList matchMedia(final String mediaQueryString) {
         final MediaQueryList mediaQueryList = new MediaQueryList(mediaQueryString);
         mediaQueryList.setParentScope(this);
         mediaQueryList.setPrototype(getPrototype(mediaQueryList.getClass()));
         return mediaQueryList;
     }
 
     /**
      * Stub only at the moment.
      * @param search the text string for which to search
      * @param caseSensitive if true, specifies a case-sensitive search
      * @param backwards if true, specifies a backward search
      * @param wrapAround if true, specifies a wrap around search
      * @param wholeWord if true, specifies a whole word search
      * @param searchInFrames if true, specifies a search in frames
      * @param showDialog if true, specifies a show Dialog.
      * @return false
      */
     @JsxFunction
     public boolean find(final String search, final boolean caseSensitive,
             final boolean backwards, final boolean wrapAround,
             final boolean wholeWord, final boolean searchInFrames, final boolean showDialog) {
         return false;
     }
 
     /**
      * Returns the {@code speechSynthesis} property.
      * @return the {@code speechSynthesis} property
      */
     @JsxGetter({CHROME, EDGE})
     public SpeechSynthesis getSpeechSynthesis() {
         final SpeechSynthesis speechSynthesis = new SpeechSynthesis();
         speechSynthesis.setParentScope(this);
         speechSynthesis.setPrototype(getPrototype(speechSynthesis.getClass()));
         return speechSynthesis;
     }
 
     /**
      * Returns the {@code offscreenBuffering} property.
      * @return the {@code offscreenBuffering} property
      */
     @JsxGetter({CHROME, EDGE})
     public boolean isOffscreenBuffering() {
         return true;
     }
 
     /**
      * Returns the {@code crypto} property.
      * @return the {@code crypto} property
      */
     @JsxGetter
     public Crypto getCrypto() {
         if (crypto_ == null) {
             crypto_ = new Crypto(this);
         }
         return crypto_;
     }
 
     /**
      * {@inheritDoc}
      */
     @Override
     public void close() {
         // nothing to do
     }
 
     /**
      * Does nothing.
      * @param parent the new parent scope
      */
     @Override
     public void setParentScope(final Scriptable parent) {
         // nothing as the window is the top level scope and its parent scope should stay null
     }
 
     /**
      * Returns the {@code onfocus} event handler.
      * @return the {@code onfocus} event handler
      */
     @JsxGetter
     public Function getOnfocus() {
         return getEventHandler(Event.TYPE_FOCUS);
     }
 
     /**
      * Sets the {@code onfocus} event handler.
      * @param onfocus the {@code onfocus} event handler
      */
     @JsxSetter
     public void setOnfocus(final Object onfocus) {
         setHandlerForJavaScript(Event.TYPE_FOCUS, onfocus);
     }
 
     /**
      * Returns the {@code ondragend} event handler.
      * @return the {@code ondragend} event handler
      */
     @JsxGetter
     public Function getOndragend() {
         return getEventHandler(Event.TYPE_DRAGEND);
     }
 
     /**
      * Sets the {@code ondragend} event handler.
      * @param ondragend the {@code ondragend} event handler
      */
     @JsxSetter
     public void setOndragend(final Object ondragend) {
         setHandlerForJavaScript(Event.TYPE_DRAGEND, ondragend);
     }
 
     /**
      * Returns the {@code oninvalid} event handler.
      * @return the {@code oninvalid} event handler
      */
     @JsxGetter
     public Function getOninvalid() {
         return getEventHandler(Event.TYPE_INVALID);
     }
 
     /**
      * Sets the {@code oninvalid} event handler.
      * @param oninvalid the {@code oninvalid} event handler
      */
     @JsxSetter
     public void setOninvalid(final Object oninvalid) {
         setHandlerForJavaScript(Event.TYPE_INVALID, oninvalid);
     }
 
     /**
      * Returns the {@code onpointerout} event handler.
      * @return the {@code onpointerout} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnpointerout() {
         return getEventHandler(Event.TYPE_POINTEROUT);
     }
 
     /**
      * Sets the {@code onpointerout} event handler.
      * @param onpointerout the {@code onpointerout} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnpointerout(final Object onpointerout) {
         setHandlerForJavaScript(Event.TYPE_POINTEROUT, onpointerout);
     }
 
     /**
      * Returns the {@code onratechange} event handler.
      * @return the {@code onratechange} event handler
      */
     @JsxGetter
     public Function getOnratechange() {
         return getEventHandler(Event.TYPE_RATECHANGE);
     }
 
     /**
      * Sets the {@code onratechange} event handler.
      * @param onratechange the {@code onratechange} event handler
      */
     @JsxSetter
     public void setOnratechange(final Object onratechange) {
         setHandlerForJavaScript(Event.TYPE_RATECHANGE, onratechange);
     }
 
     /**
      * Returns the {@code onanimationiteration} event handler.
      * @return the {@code onanimationiteration} event handler
      */
     @JsxGetter
     public Function getOnanimationiteration() {
         return getEventHandler(Event.TYPE_ANIMATIONITERATION);
     }
 
     /**
      * Sets the {@code onanimationiteration} event handler.
      * @param onanimationiteration the {@code onanimationiteration} event handler
      */
     @JsxSetter
     public void setOnanimationiteration(final Object onanimationiteration) {
         setHandlerForJavaScript(Event.TYPE_ANIMATIONITERATION, onanimationiteration);
     }
 
     /**
      * Returns the {@code oncanplaythrough} event handler.
      * @return the {@code oncanplaythrough} event handler
      */
     @JsxGetter
     public Function getOncanplaythrough() {
         return getEventHandler(Event.TYPE_CANPLAYTHROUGH);
     }
 
     /**
      * Sets the {@code oncanplaythrough} event handler.
      * @param oncanplaythrough the {@code oncanplaythrough} event handler
      */
     @JsxSetter
     public void setOncanplaythrough(final Object oncanplaythrough) {
         setHandlerForJavaScript(Event.TYPE_CANPLAYTHROUGH, oncanplaythrough);
     }
 
     /**
      * Returns the {@code oncancel} event handler.
      * @return the {@code oncancel} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOncancel() {
         return getEventHandler(Event.TYPE_CANCEL);
     }
 
     /**
      * Sets the {@code oncancel} event handler.
      * @param oncancel the {@code oncancel} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOncancel(final Object oncancel) {
         setHandlerForJavaScript(Event.TYPE_CANCEL, oncancel);
     }
 
     /**
      * Returns the {@code onpointerenter} event handler.
      * @return the {@code onpointerenter} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnpointerenter() {
         return getEventHandler(Event.TYPE_POINTERENTER);
     }
 
     /**
      * Sets the {@code onpointerenter} event handler.
      * @param onpointerenter the {@code onpointerenter} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnpointerenter(final Object onpointerenter) {
         setHandlerForJavaScript(Event.TYPE_POINTERENTER, onpointerenter);
     }
 
     /**
      * Returns the {@code onselect} event handler.
      * @return the {@code onselect} event handler
      */
     @JsxGetter
     public Function getOnselect() {
         return getEventHandler(Event.TYPE_SELECT);
     }
 
     /**
      * Sets the {@code onselect} event handler.
      * @param onselect the {@code onselect} event handler
      */
     @JsxSetter
     public void setOnselect(final Object onselect) {
         setHandlerForJavaScript(Event.TYPE_SELECT, onselect);
     }
 
     /**
      * Returns the {@code onauxclick} event handler.
      * @return the {@code onauxclick} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnauxclick() {
         return getEventHandler(Event.TYPE_AUXCLICK);
     }
 
     /**
      * Sets the {@code onauxclick} event handler.
      * @param onauxclick the {@code onauxclick} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnauxclick(final Object onauxclick) {
         setHandlerForJavaScript(Event.TYPE_AUXCLICK, onauxclick);
     }
 
     /**
      * Returns the {@code onscroll} event handler.
      * @return the {@code onscroll} event handler
      */
     @JsxGetter
     public Function getOnscroll() {
         return getEventHandler(Event.TYPE_SCROLL);
     }
 
     /**
      * Sets the {@code onscroll} event handler.
      * @param onscroll the {@code onscroll} event handler
      */
     @JsxSetter
     public void setOnscroll(final Object onscroll) {
         setHandlerForJavaScript(Event.TYPE_SCROLL, onscroll);
     }
 
     /**
      * Returns the {@code onkeydown} event handler.
      * @return the {@code onkeydown} event handler
      */
     @JsxGetter
     public Function getOnkeydown() {
         return getEventHandler(Event.TYPE_KEY_DOWN);
     }
 
     /**
      * Sets the {@code onkeydown} event handler.
      * @param onkeydown the {@code onkeydown} event handler
      */
     @JsxSetter
     public void setOnkeydown(final Object onkeydown) {
         setHandlerForJavaScript(Event.TYPE_KEY_DOWN, onkeydown);
     }
 
     /**
      * Returns the {@code onwebkitanimationstart} event handler.
      * @return the {@code onwebkitanimationstart} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnwebkitanimationstart() {
         return getEventHandler(Event.TYPE_WEBANIMATIONSTART);
     }
 
     /**
      * Sets the {@code onwebkitanimationstart} event handler.
      * @param onwebkitanimationstart the {@code onwebkitanimationstart} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnwebkitanimationstart(final Object onwebkitanimationstart) {
         setHandlerForJavaScript(Event.TYPE_WEBANIMATIONSTART, onwebkitanimationstart);
     }
 
     /**
      * Returns the {@code onkeyup} event handler.
      * @return the {@code onkeyup} event handler
      */
     @JsxGetter
     public Function getOnkeyup() {
         return getEventHandler(Event.TYPE_KEY_UP);
     }
 
     /**
      * Sets the {@code onkeyup} event handler.
      * @param onkeyup the {@code onkeyup} event handler
      */
     @JsxSetter
     public void setOnkeyup(final Object onkeyup) {
         setHandlerForJavaScript(Event.TYPE_KEY_UP, onkeyup);
     }
 
     /**
      * Returns the {@code onreset} event handler.
      * @return the {@code onreset} event handler
      */
     @JsxGetter
     public Function getOnreset() {
         return getEventHandler(Event.TYPE_RESET);
     }
 
     /**
      * Sets the {@code onreset} event handler.
      * @param onreset the {@code onreset} event handler
      */
     @JsxSetter
     public void setOnreset(final Object onreset) {
         setHandlerForJavaScript(Event.TYPE_RESET, onreset);
     }
 
     /**
      * Returns the {@code onkeypress} event handler.
      * @return the {@code onkeypress} event handler
      */
     @JsxGetter
     public Function getOnkeypress() {
         return getEventHandler(Event.TYPE_KEY_PRESS);
     }
 
     /**
      * Sets the {@code onkeypress} event handler.
      * @param onkeypress the {@code onkeypress} event handler
      */
     @JsxSetter
     public void setOnkeypress(final Object onkeypress) {
         setHandlerForJavaScript(Event.TYPE_KEY_PRESS, onkeypress);
     }
 
     /**
      * Returns the {@code ondrag} event handler.
      * @return the {@code ondrag} event handler
      */
     @JsxGetter
     public Function getOndrag() {
         return getEventHandler(Event.TYPE_DRAG);
     }
 
     /**
      * Sets the {@code ondrag} event handler.
      * @param ondrag the {@code ondrag} event handler
      */
     @JsxSetter
     public void setOndrag(final Object ondrag) {
         setHandlerForJavaScript(Event.TYPE_DRAG, ondrag);
     }
 
     /**
      * Returns the {@code onseeked} event handler.
      * @return the {@code onseeked} event handler
      */
     @JsxGetter
     public Function getOnseeked() {
         return getEventHandler(Event.TYPE_SEEKED);
     }
 
     /**
      * Sets the {@code onseeked} event handler.
      * @param onseeked the {@code onseeked} event handler
      */
     @JsxSetter
     public void setOnseeked(final Object onseeked) {
         setHandlerForJavaScript(Event.TYPE_SEEKED, onseeked);
     }
 
     /**
      * Returns the {@code onoffline} event handler.
      * @return the {@code onoffline} event handler
      */
     @JsxGetter
     public Function getOnoffline() {
         return getEventHandler(Event.TYPE_OFFLINE);
     }
 
     /**
      * Sets the {@code onoffline} event handler.
      * @param onoffline the {@code onoffline} event handler
      */
     @JsxSetter
     public void setOnoffline(final Object onoffline) {
         setHandlerForJavaScript(Event.TYPE_OFFLINE, onoffline);
     }
 
     /**
      * Returns the {@code ondeviceorientation} event handler.
      * @return the {@code ondeviceorientation} event handler
      */
     @JsxGetter
     public Function getOndeviceorientation() {
         return getEventHandler(Event.TYPE_DEVICEORIENTATION);
     }
 
     /**
      * Sets the {@code ondeviceorientation} event handler.
      * @param ondeviceorientation the {@code ondeviceorientation} event handler
      */
     @JsxSetter
     public void setOndeviceorientation(final Object ondeviceorientation) {
         setHandlerForJavaScript(Event.TYPE_DEVICEORIENTATION, ondeviceorientation);
     }
 
     /**
      * Returns the {@code ontoggle} event handler.
      * @return the {@code ontoggle} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOntoggle() {
         return getEventHandler(Event.TYPE_TOGGLE);
     }
 
     /**
      * Sets the {@code ontoggle} event handler.
      * @param ontoggle the {@code ontoggle} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOntoggle(final Object ontoggle) {
         setHandlerForJavaScript(Event.TYPE_TOGGLE, ontoggle);
     }
 
     /**
      * Returns the {@code onplay} event handler.
      * @return the {@code onplay} event handler
      */
     @JsxGetter
     public Function getOnplay() {
         return getEventHandler(Event.TYPE_PLAY);
     }
 
     /**
      * Sets the {@code onplay} event handler.
      * @param onplay the {@code onplay} event handler
      */
     @JsxSetter
     public void setOnplay(final Object onplay) {
         setHandlerForJavaScript(Event.TYPE_PLAY, onplay);
     }
 
     /**
      * Returns the {@code oncontextmenu} event handler.
      * @return the {@code oncontextmenu} event handler
      */
     @JsxGetter
     public Function getOncontextmenu() {
         return getEventHandler(MouseEvent.TYPE_CONTEXT_MENU);
     }
 
     /**
      * Sets the {@code oncontextmenu} event handler.
      * @param oncontextmenu the {@code oncontextmenu} event handler
      */
     @JsxSetter
     public void setOncontextmenu(final Object oncontextmenu) {
         setHandlerForJavaScript(MouseEvent.TYPE_CONTEXT_MENU, oncontextmenu);
     }
 
     /**
      * Returns the {@code onmousemove} event handler.
      * @return the {@code onmousemove} event handler
      */
     @JsxGetter
     public Function getOnmousemove() {
         return getEventHandler(MouseEvent.TYPE_MOUSE_MOVE);
     }
 
     /**
      * Sets the {@code onmousemove} event handler.
      * @param onmousemove the {@code onmousemove} event handler
      */
     @JsxSetter
     public void setOnmousemove(final Object onmousemove) {
         setHandlerForJavaScript(MouseEvent.TYPE_MOUSE_MOVE, onmousemove);
     }
 
     /**
      * Returns the {@code onpointermove} event handler.
      * @return the {@code onpointermove} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnpointermove() {
         return getEventHandler(Event.TYPE_POINTERMOVE);
     }
 
     /**
      * Sets the {@code onpointermove} event handler.
      * @param onpointermove the {@code onpointermove} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnpointermove(final Object onpointermove) {
         setHandlerForJavaScript(Event.TYPE_POINTERMOVE, onpointermove);
     }
 
     /**
      * Returns the {@code onmouseover} event handler.
      * @return the {@code onmouseover} event handler
      */
     @JsxGetter
     public Function getOnmouseover() {
         return getEventHandler(MouseEvent.TYPE_MOUSE_OVER);
     }
 
     /**
      * Sets the {@code onmouseover} event handler.
      * @param onmouseover the {@code onmouseover} event handler
      */
     @JsxSetter
     public void setOnmouseover(final Object onmouseover) {
         setHandlerForJavaScript(MouseEvent.TYPE_MOUSE_OVER, onmouseover);
     }
 
     /**
      * Returns the {@code onlostpointercapture} event handler.
      * @return the {@code onlostpointercapture} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnlostpointercapture() {
         return getEventHandler(Event.TYPE_LOSTPOINTERCAPTURE);
     }
 
     /**
      * Sets the {@code onlostpointercapture} event handler.
      * @param onlostpointercapture the {@code onlostpointercapture} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnlostpointercapture(final Object onlostpointercapture) {
         setHandlerForJavaScript(Event.TYPE_LOSTPOINTERCAPTURE, onlostpointercapture);
     }
 
     /**
      * Returns the {@code onpointerover} event handler.
      * @return the {@code onpointerover} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnpointerover() {
         return getEventHandler(Event.TYPE_POINTEROVER);
     }
 
     /**
      * Sets the {@code onpointerover} event handler.
      * @param onpointerover the {@code onpointerover} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnpointerover(final Object onpointerover) {
         setHandlerForJavaScript(Event.TYPE_POINTEROVER, onpointerover);
     }
 
     /**
      * Returns the {@code onclose} event handler.
      * @return the {@code onclose} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnclose() {
         return getEventHandler(Event.TYPE_CLOSE);
     }
 
     /**
      * Sets the {@code onclose} event handler.
      * @param onclose the {@code onclose} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnclose(final Object onclose) {
         setHandlerForJavaScript(Event.TYPE_CLOSE, onclose);
     }
 
     /**
      * Returns the {@code onanimationend} event handler.
      * @return the {@code onanimationend} event handler
      */
     @JsxGetter
     public Function getOnanimationend() {
         return getEventHandler(Event.TYPE_ANIMATIONEND);
     }
 
     /**
      * Sets the {@code onanimationend} event handler.
      * @param onanimationend the {@code onanimationend} event handler
      */
     @JsxSetter
     public void setOnanimationend(final Object onanimationend) {
         setHandlerForJavaScript(Event.TYPE_ANIMATIONEND, onanimationend);
     }
 
     /**
      * Returns the {@code ondragenter} event handler.
      * @return the {@code ondragenter} event handler
      */
     @JsxGetter
     public Function getOndragenter() {
         return getEventHandler(Event.TYPE_DRAGENTER);
     }
 
     /**
      * Sets the {@code ondragenter} event handler.
      * @param ondragenter the {@code ondragenter} event handler
      */
     @JsxSetter
     public void setOndragenter(final Object ondragenter) {
         setHandlerForJavaScript(Event.TYPE_DRAGENTER, ondragenter);
     }
 
     /**
      * Returns the {@code onafterprint} event handler.
      * @return the {@code onafterprint} event handler
      */
     @JsxGetter({FF, FF_ESR})
     public Function getOnafterprint() {
         return getEventHandler(Event.TYPE_AFTERPRINT);
     }
 
     /**
      * Sets the {@code onafterprint} event handler.
      * @param onafterprint the {@code onafterprint} event handler
      */
     @JsxSetter({FF, FF_ESR})
     public void setOnafterprint(final Object onafterprint) {
         setHandlerForJavaScript(Event.TYPE_AFTERPRINT, onafterprint);
     }
 
     /**
      * Returns the {@code onmozfullscreenerror} event handler.
      * @return the {@code onmozfullscreenerror} event handler
      */
     @JsxGetter({FF, FF_ESR})
     public Function getOnmozfullscreenerror() {
         return getEventHandler(Event.TYPE_MOZFULLSCREENERROR);
     }
 
     /**
      * Sets the {@code onmozfullscreenerror} event handler.
      * @param onmozfullscreenerror the {@code onmozfullscreenerror} event handler
      */
     @JsxSetter({FF, FF_ESR})
     public void setOnmozfullscreenerror(final Object onmozfullscreenerror) {
         setHandlerForJavaScript(Event.TYPE_MOZFULLSCREENERROR, onmozfullscreenerror);
     }
 
     /**
      * Returns the {@code onmouseleave} event handler.
      * @return the {@code onmouseleave} event handler
      */
     @JsxGetter
     public Function getOnmouseleave() {
         return getEventHandler(Event.TYPE_MOUSELEAVE);
     }
 
     /**
      * Sets the {@code onmouseleave} event handler.
      * @param onmouseleave the {@code onmouseleave} event handler
      */
     @JsxSetter
     public void setOnmouseleave(final Object onmouseleave) {
         setHandlerForJavaScript(Event.TYPE_MOUSELEAVE, onmouseleave);
     }
 
     /**
      * Returns the {@code onmousewheel} event handler.
      * @return the {@code onmousewheel} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnmousewheel() {
         return getEventHandler(Event.TYPE_MOUSEWHEEL);
     }
 
     /**
      * Sets the {@code onmousewheel} event handler.
      * @param onmousewheel the {@code onmousewheel} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnmousewheel(final Object onmousewheel) {
         setHandlerForJavaScript(Event.TYPE_MOUSEWHEEL, onmousewheel);
     }
 
     /**
      * Returns the {@code onseeking} event handler.
      * @return the {@code onseeking} event handler
      */
     @JsxGetter
     public Function getOnseeking() {
         return getEventHandler(Event.TYPE_SEEKING);
     }
 
     /**
      * Sets the {@code onseeking} event handler.
      * @param onseeking the {@code onseeking} event handler
      */
     @JsxSetter
     public void setOnseeking(final Object onseeking) {
         setHandlerForJavaScript(Event.TYPE_SEEKING, onseeking);
     }
 
     /**
      * Returns the {@code oncuechange} event handler.
      * @return the {@code oncuechange} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOncuechange() {
         return getEventHandler(Event.TYPE_CUECHANGE);
     }
 
     /**
      * Sets the {@code oncuechange} event handler.
      * @param oncuechange the {@code oncuechange} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOncuechange(final Object oncuechange) {
         setHandlerForJavaScript(Event.TYPE_CUECHANGE, oncuechange);
     }
 
     /**
      * Returns the {@code onpageshow} event handler.
      * @return the {@code onpageshow} event handler
      */
     @JsxGetter
     public Function getOnpageshow() {
         return getEventHandler(Event.TYPE_PAGESHOW);
     }
 
     /**
      * Sets the {@code onpageshow} event handler.
      * @param onpageshow the {@code onpageshow} event handler
      */
     @JsxSetter
     public void setOnpageshow(final Object onpageshow) {
         setHandlerForJavaScript(Event.TYPE_PAGESHOW, onpageshow);
     }
 
     /**
      * Returns the {@code onmozfullscreenchange} event handler.
      * @return the {@code onmozfullscreenchange} event handler
      */
     @JsxGetter({FF, FF_ESR})
     public Function getOnmozfullscreenchange() {
         return getEventHandler(Event.TYPE_MOZFULLSCREENCHANGE);
     }
 
     /**
      * Sets the {@code onmozfullscreenchange} event handler.
      * @param onmozfullscreenchange the {@code onmozfullscreenchange} event handler
      */
     @JsxSetter({FF, FF_ESR})
     public void setOnmozfullscreenchange(final Object onmozfullscreenchange) {
         setHandlerForJavaScript(Event.TYPE_MOZFULLSCREENCHANGE, onmozfullscreenchange);
     }
 
     /**
      * Returns the {@code ondurationchange} event handler.
      * @return the {@code ondurationchange} event handler
      */
     @JsxGetter
     public Function getOndurationchange() {
         return getEventHandler(Event.TYPE_DURATIONCHANGE);
     }
 
     /**
      * Sets the {@code ondurationchange} event handler.
      * @param ondurationchange the {@code ondurationchange} event handler
      */
     @JsxSetter
     public void setOndurationchange(final Object ondurationchange) {
         setHandlerForJavaScript(Event.TYPE_DURATIONCHANGE, ondurationchange);
     }
 
     /**
      * Returns the {@code onplaying} event handler.
      * @return the {@code onplaying} event handler
      */
     @JsxGetter
     public Function getOnplaying() {
         return getEventHandler(Event.TYPE_PLAYING);
     }
 
     /**
      * Sets the {@code onplaying} event handler.
      * @param onplaying the {@code onplaying} event handler
      */
     @JsxSetter
     public void setOnplaying(final Object onplaying) {
         setHandlerForJavaScript(Event.TYPE_PLAYING, onplaying);
     }
 
     /**
      * Returns the {@code onended} event handler.
      * @return the {@code onended} event handler
      */
     @JsxGetter
     public Function getOnended() {
         return getEventHandler(Event.TYPE_ENDED);
     }
 
     /**
      * Sets the {@code onended} event handler.
      * @param onended the {@code onended} event handler
      */
     @JsxSetter
     public void setOnended(final Object onended) {
         setHandlerForJavaScript(Event.TYPE_ENDED, onended);
     }
 
     /**
      * Returns the {@code onloadeddata} event handler.
      * @return the {@code onloadeddata} event handler
      */
     @JsxGetter
     public Function getOnloadeddata() {
         return getEventHandler(Event.TYPE_LOADEDDATA);
     }
 
     /**
      * Sets the {@code onloadeddata} event handler.
      * @param onloadeddata the {@code onloadeddata} event handler
      */
     @JsxSetter
     public void setOnloadeddata(final Object onloadeddata) {
         setHandlerForJavaScript(Event.TYPE_LOADEDDATA, onloadeddata);
     }
 
     /**
      * Returns the {@code onunhandledrejection} event handler.
      * @return the {@code onunhandledrejection} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnunhandledrejection() {
         return getEventHandler(Event.TYPE_UNHANDLEDREJECTION);
     }
 
     /**
      * Sets the {@code onunhandledrejection} event handler.
      * @param onunhandledrejection the {@code onunhandledrejection} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnunhandledrejection(final Object onunhandledrejection) {
         setHandlerForJavaScript(Event.TYPE_UNHANDLEDREJECTION, onunhandledrejection);
     }
 
     /**
      * Returns the {@code onmouseout} event handler.
      * @return the {@code onmouseout} event handler
      */
     @JsxGetter
     public Function getOnmouseout() {
         return getEventHandler(MouseEvent.TYPE_MOUSE_OUT);
     }
 
     /**
      * Sets the {@code onmouseout} event handler.
      * @param onmouseout the {@code onmouseout} event handler
      */
     @JsxSetter
     public void setOnmouseout(final Object onmouseout) {
         setHandlerForJavaScript(MouseEvent.TYPE_MOUSE_OUT, onmouseout);
     }
 
     /**
      * Returns the {@code onsuspend} event handler.
      * @return the {@code onsuspend} event handler
      */
     @JsxGetter
     public Function getOnsuspend() {
         return getEventHandler(Event.TYPE_SUSPEND);
     }
 
     /**
      * Sets the {@code onsuspend} event handler.
      * @param onsuspend the {@code onsuspend} event handler
      */
     @JsxSetter
     public void setOnsuspend(final Object onsuspend) {
         setHandlerForJavaScript(Event.TYPE_SUSPEND, onsuspend);
     }
 
     /**
      * Returns the {@code onwaiting} event handler.
      * @return the {@code onwaiting} event handler
      */
     @JsxGetter
     public Function getOnwaiting() {
         return getEventHandler(Event.TYPE_WAITING);
     }
 
     /**
      * Sets the {@code onwaiting} event handler.
      * @param onwaiting the {@code onwaiting} event handler
      */
     @JsxSetter
     public void setOnwaiting(final Object onwaiting) {
         setHandlerForJavaScript(Event.TYPE_WAITING, onwaiting);
     }
 
     /**
      * Returns the {@code oncanplay} event handler.
      * @return the {@code oncanplay} event handler
      */
     @JsxGetter
     public Function getOncanplay() {
         return getEventHandler(Event.TYPE_CANPLAY);
     }
 
     /**
      * Sets the {@code oncanplay} event handler.
      * @param oncanplay the {@code oncanplay} event handler
      */
     @JsxSetter
     public void setOncanplay(final Object oncanplay) {
         setHandlerForJavaScript(Event.TYPE_CANPLAY, oncanplay);
     }
 
     /**
      * Returns the {@code onmousedown} event handler.
      * @return the {@code onmousedown} event handler
      */
     @JsxGetter
     public Function getOnmousedown() {
         return getEventHandler(MouseEvent.TYPE_MOUSE_DOWN);
     }
 
     /**
      * Sets the {@code onmousedown} event handler.
      * @param onmousedown the {@code onmousedown} event handler
      */
     @JsxSetter
     public void setOnmousedown(final Object onmousedown) {
         setHandlerForJavaScript(MouseEvent.TYPE_MOUSE_DOWN, onmousedown);
     }
 
     /**
      * Returns the {@code onlanguagechange} event handler.
      * @return the {@code onlanguagechange} event handler
      */
     @JsxGetter
     public Function getOnlanguagechange() {
         return getEventHandler(Event.TYPE_LANGUAGECHANGE);
     }
 
     /**
      * Sets the {@code onlanguagechange} event handler.
      * @param onlanguagechange the {@code onlanguagechange} event handler
      */
     @JsxSetter
     public void setOnlanguagechange(final Object onlanguagechange) {
         setHandlerForJavaScript(Event.TYPE_LANGUAGECHANGE, onlanguagechange);
     }
 
     /**
      * Returns the {@code onemptied} event handler.
      * @return the {@code onemptied} event handler
      */
     @JsxGetter
     public Function getOnemptied() {
         return getEventHandler(Event.TYPE_EMPTIED);
     }
 
     /**
      * Sets the {@code onemptied} event handler.
      * @param onemptied the {@code onemptied} event handler
      */
     @JsxSetter
     public void setOnemptied(final Object onemptied) {
         setHandlerForJavaScript(Event.TYPE_EMPTIED, onemptied);
     }
 
     /**
      * Returns the {@code onrejectionhandled} event handler.
      * @return the {@code onrejectionhandled} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnrejectionhandled() {
         return getEventHandler(Event.TYPE_REJECTIONHANDLED);
     }
 
     /**
      * Sets the {@code onrejectionhandled} event handler.
      * @param onrejectionhandled the {@code onrejectionhandled} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnrejectionhandled(final Object onrejectionhandled) {
         setHandlerForJavaScript(Event.TYPE_REJECTIONHANDLED, onrejectionhandled);
     }
 
     /**
      * Returns the {@code onpointercancel} event handler.
      * @return the {@code onpointercancel} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnpointercancel() {
         return getEventHandler(Event.TYPE_POINTERCANCEL);
     }
 
     /**
      * Sets the {@code onpointercancel} event handler.
      * @param onpointercancel the {@code onpointercancel} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnpointercancel(final Object onpointercancel) {
         setHandlerForJavaScript(Event.TYPE_POINTERCANCEL, onpointercancel);
     }
 
     /**
      * Returns the {@code onresize} event handler.
      * @return the {@code onresize} event handler
      */
     @JsxGetter
     public Function getOnresize() {
         return getEventHandler(Event.TYPE_RESIZE);
     }
 
     /**
      * Sets the {@code onresize} event handler.
      * @param onresize the {@code onresize} event handler
      */
     @JsxSetter
     public void setOnresize(final Object onresize) {
         setHandlerForJavaScript(Event.TYPE_RESIZE, onresize);
     }
 
     /**
      * Returns the {@code onpause} event handler.
      * @return the {@code onpause} event handler
      */
     @JsxGetter
     public Function getOnpause() {
         return getEventHandler(Event.TYPE_PAUSE);
     }
 
     /**
      * Sets the {@code onpause} event handler.
      * @param onpause the {@code onpause} event handler
      */
     @JsxSetter
     public void setOnpause(final Object onpause) {
         setHandlerForJavaScript(Event.TYPE_PAUSE, onpause);
     }
 
     /**
      * Returns the {@code onloadstart} event handler.
      * @return the {@code onloadstart} event handler
      */
     @JsxGetter
     public Function getOnloadstart() {
         return getEventHandler(Event.TYPE_LOAD_START);
     }
 
     /**
      * Sets the {@code onloadstart} event handler.
      * @param onloadstart the {@code onloadstart} event handler
      */
     @JsxSetter
     public void setOnloadstart(final Object onloadstart) {
         setHandlerForJavaScript(Event.TYPE_LOAD_START, onloadstart);
     }
 
     /**
      * Returns the {@code onprogress} event handler.
      * @return the {@code onprogress} event handler
      */
     @JsxGetter
     public Function getOnprogress() {
         return getEventHandler(Event.TYPE_PROGRESS);
     }
 
     /**
      * Sets the {@code onprogress} event handler.
      * @param onprogress the {@code onprogress} event handler
      */
     @JsxSetter
     public void setOnprogress(final Object onprogress) {
         setHandlerForJavaScript(Event.TYPE_PROGRESS, onprogress);
     }
 
     /**
      * Returns the {@code onpointerup} event handler.
      * @return the {@code onpointerup} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnpointerup() {
         return getEventHandler(Event.TYPE_POINTERUP);
     }
 
     /**
      * Sets the {@code onpointerup} event handler.
      * @param onpointerup the {@code onpointerup} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnpointerup(final Object onpointerup) {
         setHandlerForJavaScript(Event.TYPE_POINTERUP, onpointerup);
     }
 
     /**
      * Returns the {@code onwheel} event handler.
      * @return the {@code onwheel} event handler
      */
     @JsxGetter
     public Function getOnwheel() {
         return getEventHandler(Event.TYPE_WHEEL);
     }
 
     /**
      * Sets the {@code onwheel} event handler.
      * @param onwheel the {@code onwheel} event handler
      */
     @JsxSetter
     public void setOnwheel(final Object onwheel) {
         setHandlerForJavaScript(Event.TYPE_WHEEL, onwheel);
     }
 
     /**
      * Returns the {@code onpointerleave} event handler.
      * @return the {@code onpointerleave} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnpointerleave() {
         return getEventHandler(Event.TYPE_POINTERLEAVE);
     }
 
     /**
      * Sets the {@code onpointerleave} event handler.
      * @param onpointerleave the {@code onpointerleave} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnpointerleave(final Object onpointerleave) {
         setHandlerForJavaScript(Event.TYPE_POINTERLEAVE, onpointerleave);
     }
 
     /**
      * Returns the {@code onbeforeprint} event handler.
      * @return the {@code onbeforeprint} event handler
      */
     @JsxGetter({FF, FF_ESR})
     public Function getOnbeforeprint() {
         return getEventHandler(Event.TYPE_BEFOREPRINT);
     }
 
     /**
      * Sets the {@code onbeforeprint} event handler.
      * @param onbeforeprint the {@code onbeforeprint} event handler
      */
     @JsxSetter({FF, FF_ESR})
     public void setOnbeforeprint(final Object onbeforeprint) {
         setHandlerForJavaScript(Event.TYPE_BEFOREPRINT, onbeforeprint);
     }
 
     /**
      * Returns the {@code onstorage} event handler.
      * @return the {@code onstorage} event handler
      */
     @JsxGetter
     public Function getOnstorage() {
         return getEventHandler(Event.TYPE_STORAGE);
     }
 
     /**
      * Sets the {@code onstorage} event handler.
      * @param onstorage the {@code onstorage} event handler
      */
     @JsxSetter
     public void setOnstorage(final Object onstorage) {
         setHandlerForJavaScript(Event.TYPE_STORAGE, onstorage);
     }
 
     /**
      * Returns the {@code onanimationstart} event handler.
      * @return the {@code onanimationstart} event handler
      */
     @JsxGetter
     public Function getOnanimationstart() {
         return getEventHandler(Event.TYPE_ANIMATIONSTART);
     }
 
     /**
      * Sets the {@code onanimationstart} event handler.
      * @param onanimationstart the {@code onanimationstart} event handler
      */
     @JsxSetter
     public void setOnanimationstart(final Object onanimationstart) {
         setHandlerForJavaScript(Event.TYPE_ANIMATIONSTART, onanimationstart);
     }
 
     /**
      * Returns the {@code ontimeupdate} event handler.
      * @return the {@code ontimeupdate} event handler
      */
     @JsxGetter
     public Function getOntimeupdate() {
         return getEventHandler(Event.TYPE_TIMEUPDATE);
     }
 
     /**
      * Sets the {@code ontimeupdate} event handler.
      * @param ontimeupdate the {@code ontimeupdate} event handler
      */
     @JsxSetter
     public void setOntimeupdate(final Object ontimeupdate) {
         setHandlerForJavaScript(Event.TYPE_TIMEUPDATE, ontimeupdate);
     }
 
     /**
      * Returns the {@code onpagehide} event handler.
      * @return the {@code onpagehide} event handler
      */
     @JsxGetter
     public Function getOnpagehide() {
         return getEventHandler(Event.TYPE_PAGEHIDE);
     }
 
     /**
      * Sets the {@code onpagehide} event handler.
      * @param onpagehide the {@code onpagehide} event handler
      */
     @JsxSetter
     public void setOnpagehide(final Object onpagehide) {
         setHandlerForJavaScript(Event.TYPE_PAGEHIDE, onpagehide);
     }
 
     /**
      * Returns the {@code onwebkitanimationiteration} event handler.
      * @return the {@code onwebkitanimationiteration} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnwebkitanimationiteration() {
         return getEventHandler(Event.TYPE_WEBKITANIMATIONITERATION);
     }
 
     /**
      * Sets the {@code onwebkitanimationiteration} event handler.
      * @param onwebkitanimationiteration the {@code onwebkitanimationiteration} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnwebkitanimationiteration(final Object onwebkitanimationiteration) {
         setHandlerForJavaScript(Event.TYPE_WEBKITANIMATIONITERATION, onwebkitanimationiteration);
     }
 
     /**
      * Returns the {@code onabort} event handler.
      * @return the {@code onabort} event handler
      */
     @JsxGetter
     public Function getOnabort() {
         return getEventHandler(Event.TYPE_ABORT);
     }
 
     /**
      * Sets the {@code onabort} event handler.
      * @param onabort the {@code onabort} event handler
      */
     @JsxSetter
     public void setOnabort(final Object onabort) {
         setHandlerForJavaScript(Event.TYPE_ABORT, onabort);
     }
 
     /**
      * Returns the {@code onloadedmetadata} event handler.
      * @return the {@code onloadedmetadata} event handler
      */
     @JsxGetter
     public Function getOnloadedmetadata() {
         return getEventHandler(Event.TYPE_LOADEDMETADATA);
     }
 
     /**
      * Sets the {@code onloadedmetadata} event handler.
      * @param onloadedmetadata the {@code onloadedmetadata} event handler
      */
     @JsxSetter
     public void setOnloadedmetadata(final Object onloadedmetadata) {
         setHandlerForJavaScript(Event.TYPE_LOADEDMETADATA, onloadedmetadata);
     }
 
     /**
      * Returns the {@code onmouseup} event handler.
      * @return the {@code onmouseup} event handler
      */
     @JsxGetter
     public Function getOnmouseup() {
         return getEventHandler(MouseEvent.TYPE_MOUSE_UP);
     }
 
     /**
      * Sets the {@code onmouseup} event handler.
      * @param onmouseup the {@code onmouseup} event handler
      */
     @JsxSetter
     public void setOnmouseup(final Object onmouseup) {
         setHandlerForJavaScript(MouseEvent.TYPE_MOUSE_UP, onmouseup);
     }
 
     /**
      * Returns the {@code ondragover} event handler.
      * @return the {@code ondragover} event handler
      */
     @JsxGetter
     public Function getOndragover() {
         return getEventHandler(Event.TYPE_DRAGOVER);
     }
 
     /**
      * Sets the {@code ondragover} event handler.
      * @param ondragover the {@code ondragover} event handler
      */
     @JsxSetter
     public void setOndragover(final Object ondragover) {
         setHandlerForJavaScript(Event.TYPE_DRAGOVER, ondragover);
     }
 
     /**
      * Returns the {@code ononline} event handler.
      * @return the {@code ononline} event handler
      */
     @JsxGetter
     public Function getOnonline() {
         return getEventHandler(Event.TYPE_ONLINE);
     }
 
     /**
      * Sets the {@code ononline} event handler.
      * @param ononline the {@code ononline} event handler
      */
     @JsxSetter
     public void setOnonline(final Object ononline) {
         setHandlerForJavaScript(Event.TYPE_ONLINE, ononline);
     }
 
     /**
      * Returns the {@code onsearch} event handler.
      * @return the {@code onsearch} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnsearch() {
         return getEventHandler(Event.TYPE_SEARCH);
     }
 
     /**
      * Sets the {@code onsearch} event handler.
      * @param onsearch the {@code onsearch} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnsearch(final Object onsearch) {
         setHandlerForJavaScript(Event.TYPE_SEARCH, onsearch);
     }
 
     /**
      * Returns the {@code oninput} event handler.
      * @return the {@code oninput} event handler
      */
     @JsxGetter
     public Function getOninput() {
         return getEventHandler(Event.TYPE_INPUT);
     }
 
     /**
      * Sets the {@code oninput} event handler.
      * @param oninput the {@code oninput} event handler
      */
     @JsxSetter
     public void setOninput(final Object oninput) {
         setHandlerForJavaScript(Event.TYPE_INPUT, oninput);
     }
 
     /**
      * Returns the {@code onwebkittransitionend} event handler.
      * @return the {@code onwebkittransitionend} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnwebkittransitionend() {
         return getEventHandler(Event.TYPE_WEBKITTRANSITIONEND);
     }
 
     /**
      * Sets the {@code onwebkittransitionend} event handler.
      * @param onwebkittransitionend the {@code onwebkittransitionend} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnwebkittransitionend(final Object onwebkittransitionend) {
         setHandlerForJavaScript(Event.TYPE_WEBKITTRANSITIONEND, onwebkittransitionend);
     }
 
     /**
      * Returns the {@code ondevicemotion} event handler.
      * @return the {@code ondevicemotion} event handler
      */
     @JsxGetter
     public Function getOndevicemotion() {
         return getEventHandler(Event.TYPE_DEVICEMOTION);
     }
 
     /**
      * Sets the {@code ondevicemotion} event handler.
      * @param ondevicemotion the {@code ondevicemotion} event handler
      */
     @JsxSetter
     public void setOndevicemotion(final Object ondevicemotion) {
         setHandlerForJavaScript(Event.TYPE_DEVICEMOTION, ondevicemotion);
     }
 
     /**
      * Returns the {@code onstalled} event handler.
      * @return the {@code onstalled} event handler
      */
     @JsxGetter
     public Function getOnstalled() {
         return getEventHandler(Event.TYPE_STALLED);
     }
 
     /**
      * Sets the {@code onstalled} event handler.
      * @param onstalled the {@code onstalled} event handler
      */
     @JsxSetter
     public void setOnstalled(final Object onstalled) {
         setHandlerForJavaScript(Event.TYPE_STALLED, onstalled);
     }
 
     /**
      * Returns the {@code onmouseenter} event handler.
      * @return the {@code onmouseenter} event handler
      */
     @JsxGetter
     public Function getOnmouseenter() {
         return getEventHandler(Event.TYPE_MOUDEENTER);
     }
 
     /**
      * Sets the {@code onmouseenter} event handler.
      * @param onmouseenter the {@code onmouseenter} event handler
      */
     @JsxSetter
     public void setOnmouseenter(final Object onmouseenter) {
         setHandlerForJavaScript(Event.TYPE_MOUDEENTER, onmouseenter);
     }
 
     /**
      * Returns the {@code ondragleave} event handler.
      * @return the {@code ondragleave} event handler
      */
     @JsxGetter
     public Function getOndragleave() {
         return getEventHandler(Event.TYPE_DRAGLEAVE);
     }
 
     /**
      * Sets the {@code ondragleave} event handler.
      * @param ondragleave the {@code ondragleave} event handler
      */
     @JsxSetter
     public void setOndragleave(final Object ondragleave) {
         setHandlerForJavaScript(Event.TYPE_DRAGLEAVE, ondragleave);
     }
 
     /**
      * Returns the {@code onpointerdown} event handler.
      * @return the {@code onpointerdown} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnpointerdown() {
         return getEventHandler(Event.TYPE_POINTERDOWN);
     }
 
     /**
      * Sets the {@code onpointerdown} event handler.
      * @param onpointerdown the {@code onpointerdown} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnpointerdown(final Object onpointerdown) {
         setHandlerForJavaScript(Event.TYPE_POINTERDOWN, onpointerdown);
     }
 
     /**
      * Returns the {@code ondrop} event handler.
      * @return the {@code ondrop} event handler
      */
     @JsxGetter
     public Function getOndrop() {
         return getEventHandler(Event.TYPE_DROP);
     }
 
     /**
      * Sets the {@code ondrop} event handler.
      * @param ondrop the {@code ondrop} event handler
      */
     @JsxSetter
     public void setOndrop(final Object ondrop) {
         setHandlerForJavaScript(Event.TYPE_DROP, ondrop);
     }
 
     /**
      * Returns the {@code onunload} event handler.
      * @return the {@code onunload} event handler
      */
     @JsxGetter
     public Function getOnunload() {
         return getEventHandler(Event.TYPE_UNLOAD);
     }
 
     /**
      * Sets the {@code onunload} event handler.
      * @param onunload the {@code onunload} event handler
      */
     @JsxSetter
     public void setOnunload(final Object onunload) {
         setHandlerForJavaScript(Event.TYPE_UNLOAD, onunload);
     }
 
     /**
      * Returns the {@code onwebkitanimationend} event handler.
      * @return the {@code onwebkitanimationend} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOnwebkitanimationend() {
         return getEventHandler(Event.TYPE_WEBKITANIMATIONEND);
     }
 
     /**
      * Sets the {@code onwebkitanimationend} event handler.
      * @param onwebkitanimationend the {@code onwebkitanimationend} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOnwebkitanimationend(final Object onwebkitanimationend) {
         setHandlerForJavaScript(Event.TYPE_WEBKITANIMATIONEND, onwebkitanimationend);
     }
 
     /**
      * Returns the {@code ondragstart} event handler.
      * @return the {@code ondragstart} event handler
      */
     @JsxGetter
     public Function getOndragstart() {
         return getEventHandler(Event.TYPE_DRAGSTART);
     }
 
     /**
      * Sets the {@code ondragstart} event handler.
      * @param ondragstart the {@code ondragstart} event handler
      */
     @JsxSetter
     public void setOndragstart(final Object ondragstart) {
         setHandlerForJavaScript(Event.TYPE_DRAGSTART, ondragstart);
     }
 
     /**
      * Returns the {@code ontransitionend} event handler.
      * @return the {@code ontransitionend} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOntransitionend() {
         return getEventHandler(Event.TYPE_TRANSITIONEND);
     }
 
     /**
      * Sets the {@code ontransitionend} event handler.
      * @param ontransitionend the {@code ontransitionend} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOntransitionend(final Object ontransitionend) {
         setHandlerForJavaScript(Event.TYPE_TRANSITIONEND, ontransitionend);
     }
 
     /**
      * Returns the {@code ondeviceorientationabsolute} event handler.
      * @return the {@code ondeviceorientationabsolute} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOndeviceorientationabsolute() {
         return getEventHandler(Event.TYPE_DEVICEORIENTATIONABSOLUTE);
     }
 
     /**
      * Sets the {@code ondeviceorientationabsolute} event handler.
      * @param ondeviceorientationabsolute the {@code ondeviceorientationabsolute} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOndeviceorientationabsolute(final Object ondeviceorientationabsolute) {
         setHandlerForJavaScript(Event.TYPE_DEVICEORIENTATIONABSOLUTE, ondeviceorientationabsolute);
     }
 
     /**
      * Returns the {@code onvolumechange} event handler.
      * @return the {@code onvolumechange} event handler
      */
     @JsxGetter
     public Function getOnvolumechange() {
         return getEventHandler(Event.TYPE_VOLUMECHANGE);
     }
 
     /**
      * Sets the {@code onvolumechange} event handler.
      * @param onvolumechange the {@code onvolumechange} event handler
      */
     @JsxSetter
     public void setOnvolumechange(final Object onvolumechange) {
         setHandlerForJavaScript(Event.TYPE_VOLUMECHANGE, onvolumechange);
     }
 
     /**
      * Returns the {@code ongotpointercapture} event handler.
      * @return the {@code ongotpointercapture} event handler
      */
     @JsxGetter({CHROME, EDGE})
     public Function getOngotpointercapture() {
         return getEventHandler(Event.TYPE_GOTPOINTERCAPTURE);
     }
 
     /**
      * Sets the {@code ongotpointercapture} event handler.
      * @param ongotpointercapture the {@code ongotpointercapture} event handler
      */
     @JsxSetter({CHROME, EDGE})
     public void setOngotpointercapture(final Object ongotpointercapture) {
         setHandlerForJavaScript(Event.TYPE_GOTPOINTERCAPTURE, ongotpointercapture);
     }
 
     /**
      * Returns the {@code onpopstate} event handler.
      * @return the {@code onpopstate} event handler
      */
     @JsxGetter
     public Function getOnpopstate() {
         return getEventHandler(Event.TYPE_POPSTATE);
     }
 
     /**
      * Sets the {@code onpopstate} event handler.
      * @param onpopstate the {@code onpopstate} event handler
      */
     @JsxSetter
     public void setOnpopstate(final Object onpopstate) {
         setHandlerForJavaScript(Event.TYPE_POPSTATE, onpopstate);
     }
 
     /**
      * {@inheritDoc}
      * optimized version
      */
     @Override
     public BrowserVersion getBrowserVersion() {
         return getWebWindow().getWebClient().getBrowserVersion();
     }
 
     @Override
     public void put(final String name, final Scriptable start, final Object value) {
         // see https://dom.spec.whatwg.org/#window-current-event
         // because event is replaceable we need this hack here
         if ("event".equals(name)) {
             final Slot slot = querySlot(Context.getCurrentContext(), "event");
             if (slot instanceof AccessorSlot) {
                 delete("event");
             }
         }
         super.put(name, start, value);
     }
 
     /**
      * @return a boolean indicating whether the current context is secure (true) or not (false).
      */
     @JsxGetter
     public boolean isIsSecureContext() {
         final Page page = getWebWindow().getEnclosedPage();
         if (page != null) {
             final String protocol = page.getUrl().getProtocol();
             if ("https".equals(protocol)
                     || "wss".equals(protocol)
                     || "file".equals(protocol)) {
                 return true;
             }
 
             final String host = page.getUrl().getHost();
             if ("localhost".equals(host)
                     || "localhost.".equals(host)
                     || host.endsWith(".localhost")
                     || host.endsWith(".localhost.")) {
                 return true;
             }
         }
 
         return false;
     }
 }
 
 class HTMLCollectionFrames extends HTMLCollection {
     private static final Log LOG = LogFactory.getLog(HTMLCollectionFrames.class);
 
     HTMLCollectionFrames(final HtmlPage page) {
         super(page, false);
         this.setIsMatchingPredicate((Predicate<DomNode> & Serializable) node -> node instanceof BaseFrameElement);
     }
 
     @Override
     protected Scriptable getScriptableForElement(final Object obj) {
         final WebWindow window;
         if (obj instanceof BaseFrameElement) {
             window = ((BaseFrameElement) obj).getEnclosedWindow();
         }
         else {
             window = ((FrameWindow) obj).getFrameElement().getEnclosedWindow();
         }
 
         return window.getScriptableObject();
     }
 
     @Override
     protected Object getWithPreemption(final String name) {
         final List<DomNode> elements = getElements();
 
         for (final Object next : elements) {
             final BaseFrameElement frameElt = (BaseFrameElement) next;
             final WebWindow window = frameElt.getEnclosedWindow();
             if (name.equals(window.getName())) {
                 if (LOG.isDebugEnabled()) {
                     LOG.debug("Property \"" + name + "\" evaluated (by name) to " + window);
                 }
                 return getScriptableForElement(window);
             }
         }
 
         return NOT_FOUND;
     }
 }