--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/browser/Browser.d	Thu Jul 31 19:17:51 2008 -0700
@@ -0,0 +1,782 @@
+/*******************************************************************************
+ * Copyright (c) 2003, 2007 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+module dwt.browser.Browser;
+
+import dwt.dwthelper.utils;
+
+import dwt.DWT;
+import dwt.DWTError;
+import dwt.DWTException;
+import dwt.widgets.Composite;
+import dwt.widgets.Display;
+import dwt.widgets.Widget;
+
+/**
+ * Instances of this class implement the browser user interface
+ * metaphor.  It allows the user to visualize and navigate through
+ * HTML documents.
+ * <p>
+ * Note that although this class is a subclass of <code>Composite</code>,
+ * it does not make sense to set a layout on it.
+ * </p>
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>MOZILLA</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>CloseWindowListener, LocationListener, OpenWindowListener, ProgressListener, StatusTextListener, TitleListener, VisibilityWindowListener</dd>
+ * </dl>
+ * <p>
+ * IMPORTANT: This class is <em>not</em> intended to be subclassed.
+ * </p>
+ * 
+ * @since 3.0
+ */
+
+public class Browser extends Composite {
+    WebBrowser webBrowser;
+    int userStyle;
+
+    static final String PACKAGE_PREFIX = "dwt.browser."; //$NON-NLS-1$
+    static final String NO_INPUT_METHOD = "dwt.internal.gtk.noInputMethod"; //$NON-NLS-1$
+
+/**
+ * Constructs a new instance of this class given its parent
+ * and a style value describing its behavior and appearance.
+ * <p>
+ * The style value is either one of the style constants defined in
+ * class <code>DWT</code> which is applicable to instances of this
+ * class, or must be built by <em>bitwise OR</em>'ing together 
+ * (that is, using the <code>int</code> "|" operator) two or more
+ * of those <code>DWT</code> style constants. The class description
+ * lists the style constants that are applicable to the class.
+ * Style bits are also inherited from superclasses.
+ * </p>
+ *
+ * @param parent a widget which will be the parent of the new instance (cannot be null)
+ * @param style the style of widget to construct
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
+ * </ul>
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
+ * </ul>
+ * @exception DWTError <ul>
+ *    <li>ERROR_NO_HANDLES if a handle could not be obtained for browser creation</li>
+ * </ul>
+ * 
+ * @see Widget#getStyle
+ * 
+ * @since 3.0
+ */
+public Browser (Composite parent, int style) {
+    super (checkParent (parent), checkStyle (style));
+    userStyle = style;
+
+    String platform = DWT.getPlatform ();
+    Display display = parent.getDisplay ();
+    if ("gtk".equals (platform)) display.setData (NO_INPUT_METHOD, null); //$NON-NLS-1$
+    String className = null;
+    if ((style & DWT.MOZILLA) !is 0) {
+        className = "dwt.browser.Mozilla"; //$NON-NLS-1$
+    } else {
+        if ("win32".equals (platform) || "wpf".equals (platform)) { //$NON-NLS-1$ $NON-NLS-2$
+            className = "dwt.browser.IE"; //$NON-NLS-1$
+        } else if ("motif".equals (platform)) { //$NON-NLS-1$
+            className = "dwt.browser.Mozilla"; //$NON-NLS-1$
+        } else if ("gtk".equals (platform)) { //$NON-NLS-1$
+            className = "dwt.browser.Mozilla"; //$NON-NLS-1$
+        } else if ("carbon".equals (platform) || "cocoa".equals (platform)) { //$NON-NLS-1$
+            className = "dwt.browser.Safari"; //$NON-NLS-1$
+        } else if ("photon".equals (platform)) { //$NON-NLS-1$
+            className = "dwt.browser.Voyager"; //$NON-NLS-1$
+        } else {
+            dispose ();
+            DWT.error (DWT.ERROR_NO_HANDLES);
+        }
+    }
+
+    try {
+        Class clazz = Class.forName (className);
+        webBrowser = (WebBrowser)clazz.newInstance ();
+    } catch (ClassNotFoundException e) {
+    } catch (IllegalAccessException e) {
+    } catch (InstantiationException e) {
+    }
+    if (webBrowser is null) {
+        dispose ();
+        DWT.error (DWT.ERROR_NO_HANDLES);
+    }
+
+    webBrowser.setBrowser (this);
+    webBrowser.create (parent, style);
+}
+
+static Composite checkParent (Composite parent) {
+    String platform = DWT.getPlatform ();
+    if (!"gtk".equals (platform)) return parent; //$NON-NLS-1$
+
+    /*
+    * Note.  Mozilla provides all IM support needed for text input in web pages.
+    * If DWT creates another input method context for the widget it will cause
+    * indeterminate results to happen (hangs and crashes). The fix is to prevent 
+    * DWT from creating an input method context for the  Browser widget.
+    */
+    if (parent !is null && !parent.isDisposed ()) {
+        Display display = parent.getDisplay ();
+        if (display !is null) {
+            if (display.getThread () is Thread.currentThread ()) {
+                display.setData (NO_INPUT_METHOD, "true"); //$NON-NLS-1$
+            }
+        }
+    }
+    return parent;
+}
+
+static int checkStyle(int style) {
+    String platform = DWT.getPlatform ();
+    if ((style & DWT.MOZILLA) !is 0) {
+        if ("carbon".equals (platform)) return style | DWT.EMBEDDED; //$NON-NLS-1$
+        if ("motif".equals (platform)) return style | DWT.EMBEDDED; //$NON-NLS-1$
+        return style;
+    }
+
+    if ("win32".equals (platform)) { //$NON-NLS-1$
+        /*
+        * For IE on win32 the border is supplied by the embedded browser, so remove
+        * the style so that the parent Composite will not draw a second border.
+        */
+        return style & ~DWT.BORDER;
+    } else if ("motif".equals (platform)) { //$NON-NLS-1$
+        return style | DWT.EMBEDDED;
+    }
+    return style;
+}
+
+/**
+ * Clears all session cookies from all current Browser instances.
+ * 
+ * @since 3.2
+ */
+public static void clearSessions () {
+    WebBrowser.clearSessions ();
+}
+
+/**  
+ * Adds the listener to the collection of listeners who will be
+ * notified when the window hosting the receiver should be closed.
+ * <p>
+ * This notification occurs when a javascript command such as
+ * <code>window.close</code> gets executed by a <code>Browser</code>.
+ * </p>
+ *
+ * @param listener the listener which should be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public void addCloseWindowListener (CloseWindowListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.addCloseWindowListener (listener);
+}
+
+/**  
+ * Adds the listener to the collection of listeners who will be
+ * notified when the current location has changed or is about to change.
+ * <p>
+ * This notification typically occurs when the application navigates
+ * to a new location with {@link #setUrl(String)} or when the user
+ * activates a hyperlink.
+ * </p>
+ *
+ * @param listener the listener which should be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public void addLocationListener (LocationListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.addLocationListener (listener);
+}
+
+/**  
+ * Adds the listener to the collection of listeners who will be
+ * notified when a new window needs to be created.
+ * <p>
+ * This notification occurs when a javascript command such as
+ * <code>window.open</code> gets executed by a <code>Browser</code>.
+ * </p>
+ *
+ * @param listener the listener which should be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public void addOpenWindowListener (OpenWindowListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.addOpenWindowListener (listener);
+}
+
+/**  
+ * Adds the listener to the collection of listeners who will be
+ * notified when a progress is made during the loading of the current 
+ * URL or when the loading of the current URL has been completed.
+ *
+ * @param listener the listener which should be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public void addProgressListener (ProgressListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.addProgressListener (listener);
+}
+
+/**  
+ * Adds the listener to the collection of listeners who will be
+ * notified when the status text is changed.
+ * <p>
+ * The status text is typically displayed in the status bar of
+ * a browser application.
+ * </p>
+ *
+ * @param listener the listener which should be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public void addStatusTextListener (StatusTextListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.addStatusTextListener (listener);
+}
+
+/**  
+ * Adds the listener to the collection of listeners who will be
+ * notified when the title of the current document is available
+ * or has changed.
+ *
+ * @param listener the listener which should be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public void addTitleListener (TitleListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.addTitleListener (listener);
+}
+
+/**  
+ * Adds the listener to the collection of listeners who will be
+ * notified when a window hosting the receiver needs to be displayed
+ * or hidden.
+ *
+ * @param listener the listener which should be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public void addVisibilityWindowListener (VisibilityWindowListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.addVisibilityWindowListener (listener);
+}
+
+/**
+ * Navigate to the previous session history item.
+ *
+ * @return <code>true</code> if the operation was successful and <code>false</code> otherwise
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @see #forward
+ * 
+ * @since 3.0
+ */
+public bool back () {
+    checkWidget();
+    return webBrowser.back ();
+}
+
+protected void checkSubclass () {
+    String name = getClass ().getName ();
+    int index = name.lastIndexOf ('.');
+    if (!name.substring (0, index + 1).equals (PACKAGE_PREFIX)) {
+        DWT.error (DWT.ERROR_INVALID_SUBCLASS);
+    }
+}
+
+/**
+ * Execute the specified script.
+ *
+ * <p>
+ * Execute a script containing javascript commands in the context of the current document. 
+ * 
+ * @param script the script with javascript commands
+ *  
+ * @return <code>true</code> if the operation was successful and <code>false</code> otherwise
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the script is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.1
+ */
+public bool execute (String script) {
+    checkWidget();
+    if (script is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    return webBrowser.execute (script);
+}
+
+/**
+ * Navigate to the next session history item.
+ *
+ * @return <code>true</code> if the operation was successful and <code>false</code> otherwise
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ * 
+ * @see #back
+ * 
+ * @since 3.0
+ */
+public bool forward () {
+    checkWidget();
+    return webBrowser.forward ();
+}
+
+public int getStyle () {
+    /*
+    * If DWT.BORDER was specified at creation time then getStyle() should answer
+    * it even though it is removed for IE on win32 in checkStyle().
+    */
+    return super.getStyle () | (userStyle & DWT.BORDER);
+}
+
+/**
+ * Returns a string with HTML that represents the content of the current page.
+ *
+ * @return HTML representing the current page or an empty <code>String</code>
+ * if this is empty
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.4
+ */
+public String getText () {
+    checkWidget();
+    return webBrowser.getText ();
+}
+
+/**
+ * Returns the current URL.
+ *
+ * @return the current URL or an empty <code>String</code> if there is no current URL
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @see #setUrl
+ * 
+ * @since 3.0
+ */
+public String getUrl () {
+    checkWidget();
+    return webBrowser.getUrl ();
+}
+
+/**
+ * Returns the JavaXPCOM <code>nsIWebBrowser</code> for the receiver, or <code>null</code>
+ * if it is not available.  In order for an <code>nsIWebBrowser</code> to be returned all
+ * of the following must be true: <ul>
+ *    <li>the receiver's style must be <code>DWT.MOZILLA</code></li>
+ *    <li>the classes from JavaXPCOM &gt;= 1.8.1.2 must be resolvable at runtime</li>
+ *    <li>the version of the underlying XULRunner must be &gt;= 1.8.1.2</li>
+ * </ul> 
+ *
+ * @return the receiver's JavaXPCOM <code>nsIWebBrowser</code> or <code>null</code>
+ * 
+ * @since 3.3
+ */
+public Object getWebBrowser () {
+    checkWidget();
+    return webBrowser.getWebBrowser ();
+}
+
+/**
+ * Returns <code>true</code> if the receiver can navigate to the 
+ * previous session history item, and <code>false</code> otherwise.
+ *
+ * @return the receiver's back command enabled state
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ * 
+ * @see #back
+ */
+public bool isBackEnabled () {
+    checkWidget();
+    return webBrowser.isBackEnabled ();
+}
+
+public bool isFocusControl () {
+    checkWidget();
+    if (webBrowser.isFocusControl ()) return true;
+    return super.isFocusControl ();
+}
+
+/**
+ * Returns <code>true</code> if the receiver can navigate to the 
+ * next session history item, and <code>false</code> otherwise.
+ *
+ * @return the receiver's forward command enabled state
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ * 
+ * @see #forward
+ */
+public bool isForwardEnabled () {
+    checkWidget();
+    return webBrowser.isForwardEnabled ();
+}
+
+/**
+ * Refresh the current page.
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public void refresh () {
+    checkWidget();
+    webBrowser.refresh ();
+}
+
+/**  
+ * Removes the listener from the collection of listeners who will
+ * be notified when the window hosting the receiver should be closed.
+ *
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ * 
+ * @since 3.0
+ */
+public void removeCloseWindowListener (CloseWindowListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.removeCloseWindowListener (listener);
+}
+
+/**  
+ * Removes the listener from the collection of listeners who will
+ * be notified when the current location is changed or about to be changed.
+ *
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ * 
+ * @since 3.0
+ */
+public void removeLocationListener (LocationListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.removeLocationListener (listener);
+}
+
+/**  
+ * Removes the listener from the collection of listeners who will
+ * be notified when a new window needs to be created.
+ *
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ * 
+ * @since 3.0
+ */
+public void removeOpenWindowListener (OpenWindowListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.removeOpenWindowListener (listener);
+}
+
+/**  
+ * Removes the listener from the collection of listeners who will
+ * be notified when a progress is made during the loading of the current 
+ * URL or when the loading of the current URL has been completed.
+ *
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ * 
+ * @since 3.0
+ */
+public void removeProgressListener (ProgressListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.removeProgressListener (listener);
+}
+
+/**  
+ * Removes the listener from the collection of listeners who will
+ * be notified when the status text is changed.
+ *
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ * 
+ * @since 3.0
+ */
+public void removeStatusTextListener (StatusTextListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.removeStatusTextListener (listener);
+}
+
+/**  
+ * Removes the listener from the collection of listeners who will
+ * be notified when the title of the current document is available
+ * or has changed.
+ *
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ * 
+ * @since 3.0
+ */
+public void removeTitleListener (TitleListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.removeTitleListener (listener);
+}
+
+/**  
+ * Removes the listener from the collection of listeners who will
+ * be notified when a window hosting the receiver needs to be displayed
+ * or hidden.
+ *
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ * 
+ * @since 3.0
+ */
+public void removeVisibilityWindowListener (VisibilityWindowListener listener) {
+    checkWidget();
+    if (listener is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    webBrowser.removeVisibilityWindowListener (listener);
+}
+
+/**
+ * Renders HTML.
+ * 
+ * <p>
+ * The html parameter is Unicode encoded since it is a java <code>String</code>.
+ * As a result, the HTML meta tag charset should not be set. The charset is implied
+ * by the <code>String</code> itself.
+ * 
+ * @param html the HTML content to be rendered
+ *
+ * @return true if the operation was successful and false otherwise.
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the html is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *  
+ * @see #setUrl
+ * 
+ * @since 3.0
+ */
+public bool setText (String html) {
+    checkWidget();
+    if (html is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    return webBrowser.setText (html);
+}
+
+/**
+ * Loads a URL.
+ * 
+ * @param url the URL to be loaded
+ *
+ * @return true if the operation was successful and false otherwise.
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the url is null</li>
+ * </ul>
+ * 
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *  
+ * @see #getUrl
+ * 
+ * @since 3.0
+ */
+public bool setUrl (String url) {
+    checkWidget();
+    if (url is null) DWT.error (DWT.ERROR_NULL_ARGUMENT);
+    return webBrowser.setUrl (url);
+}
+
+/**
+ * Stop any loading and rendering activity.
+ *
+ * @exception DWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS when called from the wrong thread</li>
+ *    <li>ERROR_WIDGET_DISPOSED when the widget has been disposed</li>
+ * </ul>
+ *
+ * @since 3.0
+ */
+public void stop () {
+    checkWidget();
+    webBrowser.stop ();
+}
+}