--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/browser/Browser.d	Sat Aug 09 17:00:02 2008 +0200
@@ -0,0 +1,826 @@
+/*******************************************************************************
+ * 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
+ *     
+ * Port to the D Programming language:
+ *     Jacob Carlborg <jacob.carlborg@gmail.com>
+ *******************************************************************************/
+module dwt.browser.Browser;
+
+import tango.core.Thread;
+
+import dwt.DWT;
+import dwt.DWTError;
+import dwt.DWTException;
+import dwt.widgets.Composite;
+import dwt.widgets.Display;
+import dwt.widgets.Widget;
+
+import dwt.browser.LocationListener;
+import dwt.browser.WebBrowser;
+import dwt.browser.CloseWindowListener;
+import dwt.browser.OpenWindowListener;
+import dwt.browser.ProgressListener;
+import dwt.browser.StatusTextListener;
+import dwt.browser.TitleListener;
+import dwt.browser.VisibilityWindowListener;
+
+import dwt.dwthelper.utils;
+
+/**
+ * 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 : 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 this (Composite parent, int style) {
+        super(checkParent(parent), checkStyle(style));
+        userStyle = style;
+
+        String platform = DWT.getPlatform();
+        Display display = parent.getDisplay();
+        if ("gtk".opEquals(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".opEquals(platform) || "wpf".opEquals(platform)) { //$NON-NLS-1$ $NON-NLS-2$
+                className = "dwt.browser.IE"; //$NON-NLS-1$
+            }
+            else if ("motif".opEquals(platform)) { //$NON-NLS-1$
+                className = "dwt.browser.Mozilla"; //$NON-NLS-1$
+            }
+            else if ("gtk".opEquals(platform)) { //$NON-NLS-1$
+                className = "dwt.browser.Mozilla"; //$NON-NLS-1$
+            }
+            else if ("carbon".opEquals(platform) || "cocoa".opEquals(platform)) { //$NON-NLS-1$
+                className = "dwt.browser.Safari"; //$NON-NLS-1$
+            }
+            else if ("photon".opEquals(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 = cast(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".opEquals(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".opEquals(platform))
+                return style | DWT.EMBEDDED; //$NON-NLS-1$
+            if ("motif".opEquals(platform))
+                return style | DWT.EMBEDDED; //$NON-NLS-1$
+            return style;
+        }
+
+        if ("win32".opEquals(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".opEquals(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).opEquals(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();
+    }
+}