jdk/src/solaris/classes/sun/awt/X11/XToolkit.java
changeset 2 90ce3da70b43
child 107 ed0c7cfb3666
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/solaris/classes/sun/awt/X11/XToolkit.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,2149 @@
+/*
+ * Copyright 2002-2007 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+package sun.awt.X11;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.peer.*;
+import java.beans.PropertyChangeListener;
+import sun.awt.*;
+import java.util.*;
+import java.awt.dnd.DragSource;
+import java.awt.dnd.DragGestureListener;
+import java.awt.dnd.DragGestureEvent;
+import java.awt.dnd.DragGestureRecognizer;
+import java.awt.dnd.MouseDragGestureRecognizer;
+import java.awt.dnd.InvalidDnDOperationException;
+import java.awt.dnd.peer.DragSourceContextPeer;
+import java.awt.image.*;
+import java.security.*;
+import java.awt.im.InputMethodHighlight;
+import java.awt.im.spi.InputMethodDescriptor;
+import java.awt.datatransfer.Clipboard;
+import javax.swing.LookAndFeel;
+import javax.swing.UIDefaults;
+import java.util.logging.*;
+import sun.font.FontManager;
+import sun.misc.PerformanceLogger;
+import sun.print.PrintJob2D;
+import java.lang.reflect.*;
+
+public class XToolkit extends UNIXToolkit implements Runnable, XConstants {
+    private static Logger log = Logger.getLogger("sun.awt.X11.XToolkit");
+    private static Logger eventLog = Logger.getLogger("sun.awt.X11.event.XToolkit");
+    private static final Logger timeoutTaskLog = Logger.getLogger("sun.awt.X11.timeoutTask.XToolkit");
+    private static Logger keyEventLog = Logger.getLogger("sun.awt.X11.kye.XToolkit");
+    private static final Logger backingStoreLog = Logger.getLogger("sun.awt.X11.backingStore.XToolkit");
+
+    static final boolean PRIMARY_LOOP = false;
+    static final boolean SECONDARY_LOOP = true;
+
+    private static String awtAppClassName = null;
+
+    // the system clipboard - CLIPBOARD selection
+    XClipboard clipboard;
+    // the system selection - PRIMARY selection
+    XClipboard selection;
+
+    // Dynamic Layout Resize client code setting
+    protected static boolean dynamicLayoutSetting = false;
+
+    /**
+     * True when the x settings have been loaded.
+     */
+    private boolean loadedXSettings;
+
+    /**
+    * XSETTINGS for the default screen.
+     * <p>
+     */
+    private XSettings xs;
+
+    static int arrowCursor;
+    static TreeMap winMap = new TreeMap();
+    static HashMap specialPeerMap = new HashMap();
+    static HashMap winToDispatcher = new HashMap();
+    private static long _display;
+    static UIDefaults uidefaults;
+    static X11GraphicsEnvironment localEnv;
+    static X11GraphicsDevice device;
+    static final X11GraphicsConfig config;
+    static int awt_multiclick_time;
+    static boolean securityWarningEnabled;
+
+    private static int screenWidth = -1, screenHeight = -1; // Dimensions of default screen
+    static long awt_defaultFg; // Pixel
+    private static XMouseInfoPeer xPeer;
+    private static Method m_removeSourceEvents;
+
+    static {
+        initSecurityWarning();
+        if (GraphicsEnvironment.isHeadless()) {
+            config = null;
+        } else {
+            localEnv = (X11GraphicsEnvironment) GraphicsEnvironment
+                .getLocalGraphicsEnvironment();
+            device = (X11GraphicsDevice) localEnv.getDefaultScreenDevice();
+            config = (X11GraphicsConfig) (device.getDefaultConfiguration());
+            if (device != null) {
+                _display = device.getDisplay();
+            }
+            setupModifierMap();
+            initIDs();
+            setBackingStoreType();
+        }
+        m_removeSourceEvents = SunToolkit.getMethod(EventQueue.class, "removeSourceEvents", new Class[] {Object.class, Boolean.TYPE}) ;
+    }
+
+    // Error handler stuff
+    static XErrorEvent saved_error;
+    static long saved_error_handler;
+    static XErrorHandler curErrorHandler;
+    // Should be called under LOCK, before releasing LOCK RESTORE_XERROR_HANDLER should be called
+    static void WITH_XERROR_HANDLER(XErrorHandler handler) {
+        saved_error = null;
+        curErrorHandler = handler;
+        XSync();
+        saved_error_handler = XlibWrapper.SetToolkitErrorHandler();
+    }
+    static void XERROR_SAVE(XErrorEvent event) {
+        saved_error = event;
+    }
+    // Should be called under LOCK
+    static void RESTORE_XERROR_HANDLER() {
+       XSync();
+        XlibWrapper.XSetErrorHandler(saved_error_handler);
+        curErrorHandler = null;
+    }
+    // Should be called under LOCK
+    static int SAVED_ERROR_HANDLER(long display, XErrorEvent error) {
+        return XlibWrapper.CallErrorHandler(saved_error_handler, display, error.pData);
+    }
+    interface XErrorHandler {
+        int handleError(long display, XErrorEvent err);
+    }
+    static int GlobalErrorHandler(long display, long event_ptr) {
+        XErrorEvent event = new XErrorEvent(event_ptr);
+        try {
+            if (curErrorHandler != null) {
+                return curErrorHandler.handleError(display, event);
+            } else {
+                return SAVED_ERROR_HANDLER(display, event);
+            }
+        } finally {
+        }
+    }
+
+/*
+ * Instead of validating window id, we simply call XGetWindowProperty,
+ * but temporary install this function as the error handler to ignore
+ * BadWindow error.
+ */
+    static XErrorHandler IgnoreBadWindowHandler = new XErrorHandler() {
+            public int handleError(long display, XErrorEvent err) {
+                XERROR_SAVE(err);
+                if (err.get_error_code() == BadWindow) {
+                    return 0;
+                } else {
+                    return SAVED_ERROR_HANDLER(display, err);
+                }
+            }
+        };
+
+
+    private native static void initIDs();
+    native static void waitForEvents(long nextTaskTime);
+    static Thread toolkitThread;
+    static boolean isToolkitThread() {
+        return Thread.currentThread() == toolkitThread;
+    }
+
+    static void initSecurityWarning() {
+        // Enable warning only for internal builds
+        String runtime = getSystemProperty("java.runtime.version");
+        securityWarningEnabled = (runtime != null && runtime.contains("internal"));
+    }
+
+    static boolean isSecurityWarningEnabled() {
+        return securityWarningEnabled;
+    }
+
+    static native void awt_output_flush();
+
+    static final void  awtFUnlock() {
+        awtUnlock();
+        awt_output_flush();
+    }
+
+
+    public native void nativeLoadSystemColors(int[] systemColors);
+
+    static UIDefaults getUIDefaults() {
+        if (uidefaults == null) {
+            initUIDefaults();
+        }
+        return uidefaults;
+    }
+
+    public void loadSystemColors(int[] systemColors) {
+        nativeLoadSystemColors(systemColors);
+        MotifColorUtilities.loadSystemColors(systemColors);
+    }
+
+
+
+    static void initUIDefaults() {
+        try {
+            // Load Defaults from MotifLookAndFeel
+
+            // This dummy load is necessary to get SystemColor initialized. !!!!!!
+            Color c = SystemColor.text;
+
+            LookAndFeel lnf = new XAWTLookAndFeel();
+            uidefaults = lnf.getDefaults();
+        }
+        catch (Exception e)
+        {
+            e.printStackTrace();
+        }
+    }
+
+    static Object displayLock = new Object();
+
+    public static long getDisplay() {
+        return _display;
+    }
+
+    public static long getDefaultRootWindow() {
+        awtLock();
+        try {
+            long res = XlibWrapper.RootWindow(XToolkit.getDisplay(),
+                XlibWrapper.DefaultScreen(XToolkit.getDisplay()));
+
+            if (res == 0) {
+               throw new IllegalStateException("Root window must not be null");
+            }
+            return res;
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    void init() {
+        awtLock();
+        try {
+            XlibWrapper.XSupportsLocale();
+            if (XlibWrapper.XSetLocaleModifiers("") == null) {
+                log.finer("X locale modifiers are not supported, using default");
+            }
+
+            AwtScreenData defaultScreen = new AwtScreenData(XToolkit.getDefaultScreenData());
+            awt_defaultFg = defaultScreen.get_blackpixel();
+
+            arrowCursor = XlibWrapper.XCreateFontCursor(XToolkit.getDisplay(),
+                XCursorFontConstants.XC_arrow);
+        } finally {
+            awtUnlock();
+        }
+
+        Runtime.getRuntime().addShutdownHook(new Thread() {
+                public void run() {
+                    XSystemTrayPeer peer = XSystemTrayPeer.getPeerInstance();
+                    if (peer != null) {
+                        peer.dispose();
+                    }
+                    if (xs != null) {
+                        ((XAWTXSettings)xs).dispose();
+                    }
+                    if (log.isLoggable(Level.FINE)) {
+                        dumpPeers();
+                    }
+                }
+            });
+    }
+
+    static String getCorrectXIDString(String val) {
+        if (val != null) {
+            return val.replace('.', '-');
+        } else {
+            return val;
+        }
+    }
+
+    static native String getEnv(String key);
+
+
+    static String getAWTAppClassName() {
+        return awtAppClassName;
+    }
+
+    static final String DATA_TRANSFERER_CLASS_NAME = "sun.awt.X11.XDataTransferer";
+
+    public XToolkit() {
+        super();
+        if (PerformanceLogger.loggingEnabled()) {
+            PerformanceLogger.setTime("XToolkit construction");
+        }
+
+        if (!GraphicsEnvironment.isHeadless()) {
+            String mainClassName = null;
+
+            StackTraceElement trace[] = (new Throwable()).getStackTrace();
+            int bottom = trace.length - 1;
+            if (bottom >= 0) {
+                mainClassName = trace[bottom].getClassName();
+            }
+            if (mainClassName == null || mainClassName.equals("")) {
+                mainClassName = "AWT";
+            }
+            awtAppClassName = getCorrectXIDString(mainClassName);
+
+            init();
+            XWM.init();
+            SunToolkit.setDataTransfererClassName(DATA_TRANSFERER_CLASS_NAME);
+            toolkitThread = new Thread(this, "AWT-XAWT");
+            toolkitThread.setPriority(Thread.NORM_PRIORITY + 1);
+            toolkitThread.setDaemon(true);
+            ThreadGroup mainTG = (ThreadGroup)AccessController.doPrivileged(
+                                                                            new PrivilegedAction() {
+                                                                                    public Object run() {
+                                                                                        ThreadGroup currentTG =
+                                                                                            Thread.currentThread().getThreadGroup();
+                                                                                        ThreadGroup parentTG = currentTG.getParent();
+                                                                                        while (parentTG != null) {
+                                                                                            currentTG = parentTG;
+                                                                                            parentTG = currentTG.getParent();
+                                                                                        }
+                                                                                        return currentTG;
+                                                                                    }
+                                                                                });
+            toolkitThread.start();
+        }
+    }
+
+    public ButtonPeer createButton(Button target) {
+        ButtonPeer peer = new XButtonPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public FramePeer createFrame(Frame target) {
+        FramePeer peer = new XFramePeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    static void addToWinMap(long window, XBaseWindow xwin)
+    {
+        synchronized(winMap) {
+            winMap.put(Long.valueOf(window),xwin);
+        }
+    }
+
+    static void removeFromWinMap(long window, XBaseWindow xwin) {
+        synchronized(winMap) {
+            winMap.remove(Long.valueOf(window));
+        }
+    }
+    static XBaseWindow windowToXWindow(long window) {
+        synchronized(winMap) {
+            return (XBaseWindow) winMap.get(Long.valueOf(window));
+        }
+    }
+
+    static void addEventDispatcher(long window, XEventDispatcher dispatcher) {
+        synchronized(winToDispatcher) {
+            Long key = Long.valueOf(window);
+            Collection dispatchers = (Collection)winToDispatcher.get(key);
+            if (dispatchers == null) {
+                dispatchers = new Vector();
+                winToDispatcher.put(key, dispatchers);
+            }
+            dispatchers.add(dispatcher);
+        }
+    }
+    static void removeEventDispatcher(long window, XEventDispatcher dispatcher) {
+        synchronized(winToDispatcher) {
+            Long key = Long.valueOf(window);
+            Collection dispatchers = (Collection)winToDispatcher.get(key);
+            if (dispatchers != null) {
+                dispatchers.remove(dispatcher);
+            }
+        }
+    }
+
+    private Point lastCursorPos;
+
+    /**
+     * Returns whether there is last remembered cursor position.  The
+     * position is remembered from X mouse events on our peers.  The
+     * position is stored in <code>p</code>.
+     * @return true, if there is remembered last cursor position,
+     * false otherwise
+     */
+    boolean getLastCursorPos(Point p) {
+        awtLock();
+        try {
+            if (lastCursorPos == null) {
+                return false;
+            }
+            p.setLocation(lastCursorPos);
+            return true;
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    private void processGlobalMotionEvent(XEvent e) {
+        // Only our windows guaranteely generate MotionNotify, so we
+        // should track enter/leave, to catch the moment when to
+        // switch to XQueryPointer
+        if (e.get_type() == MotionNotify) {
+            XMotionEvent ev = e.get_xmotion();
+            awtLock();
+            try {
+                if (lastCursorPos == null) {
+                    lastCursorPos = new Point(ev.get_x_root(), ev.get_y_root());
+                } else {
+                    lastCursorPos.setLocation(ev.get_x_root(), ev.get_y_root());
+                }
+            } finally {
+                awtUnlock();
+            }
+        } else if (e.get_type() == LeaveNotify) {
+            // Leave from our window
+            awtLock();
+            try {
+                lastCursorPos = null;
+            } finally {
+                awtUnlock();
+            }
+        } else if (e.get_type() == EnterNotify) {
+            // Entrance into our window
+            XCrossingEvent ev = e.get_xcrossing();
+            awtLock();
+            try {
+                if (lastCursorPos == null) {
+                    lastCursorPos = new Point(ev.get_x_root(), ev.get_y_root());
+                } else {
+                    lastCursorPos.setLocation(ev.get_x_root(), ev.get_y_root());
+                }
+            } finally {
+                awtUnlock();
+            }
+        }
+    }
+
+    public interface XEventListener {
+        public void eventProcessed(XEvent e);
+    }
+
+    private Collection<XEventListener> listeners = new LinkedList<XEventListener>();
+
+    public void addXEventListener(XEventListener listener) {
+        synchronized (listeners) {
+            listeners.add(listener);
+        }
+    }
+
+    private void notifyListeners(XEvent xev) {
+        synchronized (listeners) {
+            if (listeners.size() == 0) return;
+
+            XEvent copy = xev.clone();
+            try {
+                for (XEventListener listener : listeners) {
+                    listener.eventProcessed(copy);
+                }
+            } finally {
+                copy.dispose();
+            }
+        }
+    }
+
+    private void dispatchEvent(XEvent ev) {
+        final XAnyEvent xany = ev.get_xany();
+
+        if (windowToXWindow(xany.get_window()) != null &&
+             (ev.get_type() == MotionNotify || ev.get_type() == EnterNotify || ev.get_type() == LeaveNotify))
+        {
+            processGlobalMotionEvent(ev);
+        }
+
+        XBaseWindow.dispatchToWindow(ev);
+
+        Collection dispatchers = null;
+        synchronized(winToDispatcher) {
+            Long key = Long.valueOf(xany.get_window());
+            dispatchers = (Collection)winToDispatcher.get(key);
+            if (dispatchers != null) { // Clone it to avoid synchronization during dispatching
+                dispatchers = new Vector(dispatchers);
+            }
+        }
+        if (dispatchers != null) {
+            Iterator iter = dispatchers.iterator();
+            while (iter.hasNext()) {
+                XEventDispatcher disp = (XEventDispatcher)iter.next();
+                disp.dispatchEvent(ev);
+            }
+        }
+        notifyListeners(ev);
+    }
+
+    static void processException(Throwable thr) {
+        if (log.isLoggable(Level.WARNING)) {
+            log.log(Level.WARNING, "Exception on Toolkit thread", thr);
+        }
+    }
+
+    static native void awt_toolkit_init();
+
+    public void run() {
+        awt_toolkit_init();
+        run(PRIMARY_LOOP);
+    }
+
+    public void run(boolean loop)
+    {
+        XEvent ev = new XEvent();
+        while(true) {
+            awtLock();
+            try {
+                if (loop == SECONDARY_LOOP) {
+                    // In the secondary loop we may have already aquired awt_lock
+                    // several times, so waitForEvents() might be unable to release
+                    // the awt_lock and this causes lock up.
+                    // For now, we just avoid waitForEvents in the secondary loop.
+                    if (!XlibWrapper.XNextSecondaryLoopEvent(getDisplay(),ev.pData)) {
+                        break;
+                    }
+                } else {
+                    callTimeoutTasks();
+                    // If no events are queued, waitForEvents() causes calls to
+                    // awtUnlock(), awtJNI_ThreadYield, poll, awtLock(),
+                    // so it spends most of its time in poll, without holding the lock.
+                    while ((XlibWrapper.XEventsQueued(getDisplay(), XlibWrapper.QueuedAfterReading) == 0) &&
+                           (XlibWrapper.XEventsQueued(getDisplay(), XlibWrapper.QueuedAfterFlush) == 0)) {
+                        callTimeoutTasks();
+                        waitForEvents(getNextTaskTime());
+                    }
+                    XlibWrapper.XNextEvent(getDisplay(),ev.pData);
+                }
+
+                if (ev.get_type() != NoExpose) {
+                    eventNumber++;
+                }
+
+                if (XDropTargetEventProcessor.processEvent(ev) ||
+                    XDragSourceContextPeer.processEvent(ev)) {
+                    continue;
+                }
+
+                if (eventLog.isLoggable(Level.FINER)) {
+                    eventLog.log(Level.FINER, "{0}", ev);
+                }
+
+                // Check if input method consumes the event
+                long w = 0;
+                if (windowToXWindow(ev.get_xany().get_window()) != null) {
+                    Component owner =
+                        XKeyboardFocusManagerPeer.getCurrentNativeFocusOwner();
+                    if (owner != null) {
+                        XWindow ownerWindow = (XWindow) ComponentAccessor.getPeer(owner);
+                        if (ownerWindow != null) {
+                            w = ownerWindow.getContentWindow();
+                        }
+                    }
+                }
+                if( keyEventLog.isLoggable(Level.FINE) && (ev.get_type() == KeyPress || ev.get_type() == KeyRelease) ) {
+                    keyEventLog.fine("before XFilterEvent:"+ev);
+                }
+                if (XlibWrapper.XFilterEvent(ev.getPData(), w)) {
+                    continue;
+                }
+                if( keyEventLog.isLoggable(Level.FINE) && (ev.get_type() == KeyPress || ev.get_type() == KeyRelease) ) {
+                    keyEventLog.fine("after XFilterEvent:"+ev); // IS THIS CORRECT?
+                }
+
+                dispatchEvent(ev);
+            } catch (ThreadDeath td) {
+                XBaseWindow.ungrabInput();
+                return;
+            } catch (Throwable thr) {
+                XBaseWindow.ungrabInput();
+                processException(thr);
+            } finally {
+                awtUnlock();
+            }
+        }
+    }
+
+    static int getDefaultScreenWidth() {
+        if (screenWidth == -1) {
+            long display = getDisplay();
+            awtLock();
+            try {
+                screenWidth = (int) XlibWrapper.DisplayWidth(display, XlibWrapper.DefaultScreen(display));
+            } finally {
+                awtUnlock();
+            }
+        }
+        return screenWidth;
+    }
+
+    static int getDefaultScreenHeight() {
+        if (screenHeight == -1) {
+            long display = getDisplay();
+            awtLock();
+            try {
+                screenHeight = (int) XlibWrapper.DisplayHeight(display, XlibWrapper.DefaultScreen(display));
+            } finally {
+                awtUnlock();
+            }
+        }
+        return screenHeight;
+    }
+
+    protected int getScreenWidth() {
+        return getDefaultScreenWidth();
+    }
+
+    protected int getScreenHeight() {
+        return getDefaultScreenHeight();
+    }
+
+    private static Rectangle getWorkArea(long root)
+    {
+        XAtom XA_NET_WORKAREA = XAtom.get("_NET_WORKAREA");
+
+        long native_ptr = Native.allocateLongArray(4);
+        try
+        {
+            boolean workareaPresent = XA_NET_WORKAREA.getAtomData(root,
+                XAtom.XA_CARDINAL, native_ptr, 4);
+            if (workareaPresent)
+            {
+                int rootX = (int)Native.getLong(native_ptr, 0);
+                int rootY = (int)Native.getLong(native_ptr, 1);
+                int rootWidth = (int)Native.getLong(native_ptr, 2);
+                int rootHeight = (int)Native.getLong(native_ptr, 3);
+
+                return new Rectangle(rootX, rootY, rootWidth, rootHeight);
+            }
+        }
+        finally
+        {
+            XlibWrapper.unsafe.freeMemory(native_ptr);
+        }
+
+        return null;
+    }
+
+    /*
+     * If we're running in non-Xinerama environment and the current
+     * window manager supports _NET protocol then the screen insets
+     * are calculated using _NET_WM_WORKAREA property of the root
+     * window.
+     * Otherwise, i. e. if Xinerama is on or _NET_WM_WORKAREA is
+     * not set, we try to calculate the insets ourselves using
+     * getScreenInsetsManually method.
+     */
+    public Insets getScreenInsets(GraphicsConfiguration gc)
+    {
+        XNETProtocol netProto = XWM.getWM().getNETProtocol();
+        if ((netProto == null) || !netProto.active())
+        {
+            return super.getScreenInsets(gc);
+        }
+
+        XToolkit.awtLock();
+        try
+        {
+            X11GraphicsConfig x11gc = (X11GraphicsConfig)gc;
+            X11GraphicsDevice x11gd = (X11GraphicsDevice)x11gc.getDevice();
+            long root = XlibUtil.getRootWindow(x11gd.getScreen());
+            Rectangle rootBounds = XlibUtil.getWindowGeometry(root);
+
+            X11GraphicsEnvironment x11ge = (X11GraphicsEnvironment)
+                GraphicsEnvironment.getLocalGraphicsEnvironment();
+            if (!x11ge.runningXinerama())
+            {
+                Rectangle workArea = XToolkit.getWorkArea(root);
+                if (workArea != null)
+                {
+                    return new Insets(workArea.y,
+                                      workArea.x,
+                                      rootBounds.height - workArea.height - workArea.y,
+                                      rootBounds.width - workArea.width - workArea.x);
+                }
+            }
+
+            return getScreenInsetsManually(root, rootBounds, gc.getBounds());
+        }
+        finally
+        {
+            XToolkit.awtUnlock();
+        }
+    }
+
+    /*
+     * Manual calculation of screen insets: get all the windows with
+     * _NET_WM_STRUT/_NET_WM_STRUT_PARTIAL hints and add these
+     * hints' values to screen insets.
+     *
+     * This method should be called under XToolkit.awtLock()
+     */
+    private Insets getScreenInsetsManually(long root, Rectangle rootBounds, Rectangle screenBounds)
+    {
+        /*
+         * During the manual calculation of screen insets we iterate
+         * all the X windows hierarchy starting from root window. This
+         * constant is the max level inspected in this hierarchy.
+         * 3 is a heuristic value: I suppose any the toolbar-like
+         * window is a child of either root or desktop window.
+         */
+        final int MAX_NESTED_LEVEL = 3;
+
+        XAtom XA_NET_WM_STRUT = XAtom.get("_NET_WM_STRUT");
+        XAtom XA_NET_WM_STRUT_PARTIAL = XAtom.get("_NET_WM_STRUT_PARTIAL");
+
+        Insets insets = new Insets(0, 0, 0, 0);
+
+        java.util.List search = new LinkedList();
+        search.add(root);
+        search.add(0);
+        while (!search.isEmpty())
+        {
+            long window = (Long)search.remove(0);
+            int windowLevel = (Integer)search.remove(0);
+
+            /*
+             * Note that most of the modern window managers unmap
+             * application window if it is iconified. Thus, any
+             * _NET_WM_STRUT[_PARTIAL] hints for iconified windows
+             * are not included to the screen insets.
+             */
+            if (XlibUtil.getWindowMapState(window) == XlibWrapper.IsUnmapped)
+            {
+                continue;
+            }
+
+            long native_ptr = Native.allocateLongArray(4);
+            try
+            {
+                // first, check if _NET_WM_STRUT or _NET_WM_STRUT_PARTIAL are present
+                // if both are set on the window, _NET_WM_STRUT_PARTIAL is used (see _NET spec)
+                boolean strutPresent = XA_NET_WM_STRUT_PARTIAL.getAtomData(window, XAtom.XA_CARDINAL, native_ptr, 4);
+                if (!strutPresent)
+                {
+                    strutPresent = XA_NET_WM_STRUT.getAtomData(window, XAtom.XA_CARDINAL, native_ptr, 4);
+                }
+                if (strutPresent)
+                {
+                    // second, verify that window is located on the proper screen
+                    Rectangle windowBounds = XlibUtil.getWindowGeometry(window);
+                    if (windowLevel > 1)
+                    {
+                        windowBounds = XlibUtil.translateCoordinates(window, root, windowBounds);
+                    }
+                    // if _NET_WM_STRUT_PARTIAL is present, we should use its values to detect
+                    // if the struts area intersects with screenBounds, however some window
+                    // managers don't set this hint correctly, so we just get intersection with windowBounds
+                    if (windowBounds.intersects(screenBounds))
+                    {
+                        insets.left = Math.max((int)Native.getLong(native_ptr, 0), insets.left);
+                        insets.right = Math.max((int)Native.getLong(native_ptr, 1), insets.right);
+                        insets.top = Math.max((int)Native.getLong(native_ptr, 2), insets.top);
+                        insets.bottom = Math.max((int)Native.getLong(native_ptr, 3), insets.bottom);
+                    }
+                }
+            }
+            finally
+            {
+                XlibWrapper.unsafe.freeMemory(native_ptr);
+            }
+
+            if (windowLevel < MAX_NESTED_LEVEL)
+            {
+                Set<Long> children = XlibUtil.getChildWindows(window);
+                for (long child : children)
+                {
+                    search.add(child);
+                    search.add(windowLevel + 1);
+                }
+            }
+        }
+
+        return insets;
+    }
+
+    /*
+     * The current implementation of disabling background erasing for
+     * canvases is that we don't set any native background color
+     * (with XSetWindowBackground) for the canvas window. However,
+     * this color is set in the peer constructor - see
+     * XWindow.postInit() for details. That's why this method from
+     * SunToolkit is not overridden in XToolkit: it's too late to
+     * disable background erasing :(
+     */
+    /*
+    @Override
+    public void disableBackgroundErase(Canvas canvas) {
+        XCanvasPeer peer = (XCanvasPeer)canvas.getPeer();
+        if (peer == null) {
+            throw new IllegalStateException("Canvas must have a valid peer");
+        }
+        peer.disableBackgroundErase();
+    }
+    */
+
+    // Need this for XMenuItemPeer.
+    protected static final Object targetToPeer(Object target) {
+        Object p=null;
+        if (target != null && !GraphicsEnvironment.isHeadless()) {
+            p = specialPeerMap.get(target);
+        }
+        if (p != null) return p;
+        else
+            return SunToolkit.targetToPeer(target);
+    }
+
+    // Need this for XMenuItemPeer.
+    protected static final void targetDisposedPeer(Object target, Object peer) {
+        SunToolkit.targetDisposedPeer(target, peer);
+    }
+
+    public RobotPeer createRobot(Robot target, GraphicsDevice screen) {
+        return new XRobotPeer(screen.getDefaultConfiguration());
+    }
+
+
+  /*
+     * On X, support for dynamic layout on resizing is governed by the
+     * window manager.  If the window manager supports it, it happens
+     * automatically.  The setter method for this property is
+     * irrelevant on X.
+     */
+    public void setDynamicLayout(boolean b) {
+        dynamicLayoutSetting = b;
+    }
+
+    protected boolean isDynamicLayoutSet() {
+        return dynamicLayoutSetting;
+    }
+
+    /* Called from isDynamicLayoutActive() and from
+     * lazilyLoadDynamicLayoutSupportedProperty()
+     */
+    protected boolean isDynamicLayoutSupported() {
+        return XWM.getWM().supportsDynamicLayout();
+    }
+
+    public boolean isDynamicLayoutActive() {
+        return isDynamicLayoutSupported();
+    }
+
+
+    public FontPeer getFontPeer(String name, int style){
+        return new XFontPeer(name, style);
+    }
+
+    public DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException {
+        return XDragSourceContextPeer.createDragSourceContextPeer(dge);
+    }
+
+    public <T extends DragGestureRecognizer> T
+    createDragGestureRecognizer(Class<T> recognizerClass,
+                    DragSource ds,
+                    Component c,
+                    int srcActions,
+                    DragGestureListener dgl)
+    {
+        if (MouseDragGestureRecognizer.class.equals(recognizerClass))
+            return (T)new XMouseDragGestureRecognizer(ds, c, srcActions, dgl);
+        else
+            return null;
+    }
+
+    public CheckboxMenuItemPeer createCheckboxMenuItem(CheckboxMenuItem target) {
+        XCheckboxMenuItemPeer peer = new XCheckboxMenuItemPeer(target);
+        //vb157120: looks like we don't need to map menu items
+        //in new menus implementation
+        //targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public MenuItemPeer createMenuItem(MenuItem target) {
+        XMenuItemPeer peer = new XMenuItemPeer(target);
+        //vb157120: looks like we don't need to map menu items
+        //in new menus implementation
+        //targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public TextFieldPeer createTextField(TextField target) {
+        TextFieldPeer  peer = new XTextFieldPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public LabelPeer createLabel(Label target) {
+        LabelPeer  peer = new XLabelPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public ListPeer createList(java.awt.List target) {
+        ListPeer peer = new XListPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public CheckboxPeer createCheckbox(Checkbox target) {
+        CheckboxPeer peer = new XCheckboxPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public ScrollbarPeer createScrollbar(Scrollbar target) {
+        XScrollbarPeer peer = new XScrollbarPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public ScrollPanePeer createScrollPane(ScrollPane target) {
+        XScrollPanePeer peer = new XScrollPanePeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public TextAreaPeer createTextArea(TextArea target) {
+        TextAreaPeer peer = new XTextAreaPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public ChoicePeer createChoice(Choice target) {
+        XChoicePeer peer = new XChoicePeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public CanvasPeer createCanvas(Canvas target) {
+        XCanvasPeer peer = (isXEmbedServerRequested() ? new XEmbedCanvasPeer(target) : new XCanvasPeer(target));
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public PanelPeer createPanel(Panel target) {
+        PanelPeer peer = new XPanelPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public WindowPeer createWindow(Window target) {
+        WindowPeer peer = new XWindowPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public DialogPeer createDialog(Dialog target) {
+        DialogPeer peer = new XDialogPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public FileDialogPeer createFileDialog(FileDialog target) {
+        FileDialogPeer peer = new XFileDialogPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public MenuBarPeer createMenuBar(MenuBar target) {
+        XMenuBarPeer peer = new XMenuBarPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public MenuPeer createMenu(Menu target) {
+        XMenuPeer peer = new XMenuPeer(target);
+        //vb157120: looks like we don't need to map menu items
+        //in new menus implementation
+        //targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public PopupMenuPeer createPopupMenu(PopupMenu target) {
+        XPopupMenuPeer peer = new XPopupMenuPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public synchronized MouseInfoPeer getMouseInfoPeer() {
+        if (xPeer == null) {
+            xPeer = new XMouseInfoPeer();
+        }
+        return xPeer;
+    }
+
+    public XEmbeddedFramePeer createEmbeddedFrame(XEmbeddedFrame target)
+    {
+        XEmbeddedFramePeer peer = new XEmbeddedFramePeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    XEmbedChildProxyPeer createEmbedProxy(XEmbedChildProxy target) {
+        XEmbedChildProxyPeer peer = new XEmbedChildProxyPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public KeyboardFocusManagerPeer createKeyboardFocusManagerPeer(KeyboardFocusManager manager) throws HeadlessException {
+        XKeyboardFocusManagerPeer peer = new XKeyboardFocusManagerPeer(manager);
+        return peer;
+    }
+
+    /**
+     * Returns a new custom cursor.
+     */
+    public Cursor createCustomCursor(Image cursor, Point hotSpot, String name)
+      throws IndexOutOfBoundsException {
+        return new XCustomCursor(cursor, hotSpot, name);
+    }
+
+    public TrayIconPeer createTrayIcon(TrayIcon target)
+      throws HeadlessException, AWTException
+    {
+        TrayIconPeer peer = new XTrayIconPeer(target);
+        targetCreatedPeer(target, peer);
+        return peer;
+    }
+
+    public SystemTrayPeer createSystemTray(SystemTray target) throws HeadlessException {
+        SystemTrayPeer peer = new XSystemTrayPeer(target);
+        return peer;
+    }
+
+    public boolean isTraySupported() {
+        XSystemTrayPeer peer = XSystemTrayPeer.getPeerInstance();
+        if (peer != null) {
+            return peer.isAvailable();
+        }
+        return false;
+    }
+
+    /**
+     * Returns the supported cursor size
+     */
+    public Dimension getBestCursorSize(int preferredWidth, int preferredHeight) {
+        return XCustomCursor.getBestCursorSize(
+                                               java.lang.Math.max(1,preferredWidth), java.lang.Math.max(1,preferredHeight));
+    }
+
+
+    public int getMaximumCursorColors() {
+        return 2;  // Black and white.
+    }
+
+    public Map mapInputMethodHighlight(InputMethodHighlight highlight)     {
+        return XInputMethod.mapInputMethodHighlight(highlight);
+    }
+
+    public  Clipboard getSystemClipboard() {
+        SecurityManager security = System.getSecurityManager();
+        if (security != null) {
+            security.checkSystemClipboardAccess();
+        }
+        synchronized (this) {
+            if (clipboard == null) {
+                clipboard = new XClipboard("System", "CLIPBOARD");
+            }
+        }
+        return clipboard;
+    }
+
+    public Clipboard getSystemSelection() {
+        SecurityManager security = System.getSecurityManager();
+        if (security != null) {
+            security.checkSystemClipboardAccess();
+        }
+        synchronized (this) {
+            if (selection == null) {
+                selection = new XClipboard("Selection", "PRIMARY");
+            }
+        }
+        return selection;
+    }
+
+    public void beep() {
+        awtLock();
+        try {
+            XlibWrapper.XBell(getDisplay(), 0);
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    static String getSystemProperty(final String name) {
+        return (String)AccessController.doPrivileged(new PrivilegedAction() {
+                public Object run() {
+                    return System.getProperty(name);
+                }
+            });
+    }
+
+    public PrintJob getPrintJob(final Frame frame, final String doctitle,
+                                final Properties props) {
+
+        if (GraphicsEnvironment.isHeadless()) {
+            throw new IllegalArgumentException();
+        }
+
+        PrintJob2D printJob = new PrintJob2D(frame, doctitle, props);
+
+        if (printJob.printDialog() == false) {
+            printJob = null;
+        }
+        return printJob;
+    }
+
+    public PrintJob getPrintJob(final Frame frame, final String doctitle,
+                final JobAttributes jobAttributes,
+                final PageAttributes pageAttributes) {
+
+
+        if (GraphicsEnvironment.isHeadless()) {
+            throw new IllegalArgumentException();
+        }
+
+        PrintJob2D printJob = new PrintJob2D(frame, doctitle,
+                                             jobAttributes, pageAttributes);
+
+        if (printJob.printDialog() == false) {
+            printJob = null;
+        }
+
+        return printJob;
+    }
+
+    static void XSync() {
+        awtLock();
+        try {
+            XlibWrapper.XSync(getDisplay(),0);
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    public int getScreenResolution() {
+        long display = getDisplay();
+        awtLock();
+        try {
+            return (int) ((XlibWrapper.DisplayWidth(display,
+                XlibWrapper.DefaultScreen(display)) * 25.4) /
+                    XlibWrapper.DisplayWidthMM(display,
+                XlibWrapper.DefaultScreen(display)));
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    static native long getDefaultXColormap();
+    static native long getDefaultScreenData();
+
+    static ColorModel screenmodel;
+
+    static ColorModel getStaticColorModel() {
+        if (screenmodel == null) {
+            screenmodel = config.getColorModel ();
+        }
+        return screenmodel;
+    }
+
+    public ColorModel getColorModel() {
+        return getStaticColorModel();
+    }
+
+    /**
+     * Returns a new input method adapter descriptor for native input methods.
+     */
+    public InputMethodDescriptor getInputMethodAdapterDescriptor() throws AWTException {
+        return new XInputMethodDescriptor();
+    }
+
+    static int getMultiClickTime() {
+        if (awt_multiclick_time == 0) {
+            initializeMultiClickTime();
+        }
+        return awt_multiclick_time;
+    }
+    static void initializeMultiClickTime() {
+        awtLock();
+        try {
+            try {
+                String multiclick_time_query = XlibWrapper.XGetDefault(XToolkit.getDisplay(), "*", "multiClickTime");
+                if (multiclick_time_query != null) {
+                    awt_multiclick_time = (int)Long.parseLong(multiclick_time_query);
+    //             awt_multiclick_time = XtGetMultiClickTime(awt_display);
+                } else {
+                    multiclick_time_query = XlibWrapper.XGetDefault(XToolkit.getDisplay(),
+                                                                    "OpenWindows", "MultiClickTimeout");
+                    if (multiclick_time_query != null) {
+                        /* Note: OpenWindows.MultiClickTimeout is in tenths of
+                           a second, so we need to multiply by 100 to convert to
+                           milliseconds */
+                        awt_multiclick_time = (int)Long.parseLong(multiclick_time_query) * 100;
+                    } else {
+                        awt_multiclick_time = 200;
+    //                 awt_multiclick_time = XtGetMultiClickTime(awt_display);
+                    }
+                }
+            } catch (NumberFormatException nf) {
+                awt_multiclick_time = 200;
+            } catch (NullPointerException npe) {
+                awt_multiclick_time = 200;
+            }
+        } finally {
+            awtUnlock();
+        }
+        if (awt_multiclick_time == 0) {
+            awt_multiclick_time = 200;
+        }
+    }
+
+    public boolean isFrameStateSupported(int state)
+      throws HeadlessException
+    {
+        if (state == Frame.NORMAL || state == Frame.ICONIFIED) {
+            return true;
+        } else {
+            return XWM.getWM().supportsExtendedState(state);
+        }
+    }
+
+    static void dumpPeers() {
+        if (log.isLoggable(Level.FINE)) {
+            log.fine("Mapped windows:");
+            Iterator iter = winMap.entrySet().iterator();
+            while (iter.hasNext()) {
+                Map.Entry entry = (Map.Entry)iter.next();
+                log.fine(entry.getKey() + "->" + entry.getValue());
+                if (entry.getValue() instanceof XComponentPeer) {
+                    Component target = (Component)((XComponentPeer)entry.getValue()).getTarget();
+                    log.fine("\ttarget: " + target);
+                }
+            }
+
+            SunToolkit.dumpPeers(log);
+
+            log.fine("Mapped special peers:");
+            iter = specialPeerMap.entrySet().iterator();
+            while (iter.hasNext()) {
+                Map.Entry entry = (Map.Entry)iter.next();
+                log.fine(entry.getKey() + "->" + entry.getValue());
+            }
+
+            log.fine("Mapped dispatchers:");
+            iter = winToDispatcher.entrySet().iterator();
+            while (iter.hasNext()) {
+                Map.Entry entry = (Map.Entry)iter.next();
+                log.fine(entry.getKey() + "->" + entry.getValue());
+            }
+        }
+    }
+
+    /* Protected with awt_lock. */
+    private static boolean initialized;
+    private static boolean timeStampUpdated;
+    private static long timeStamp;
+
+    private static final XEventDispatcher timeFetcher =
+    new XEventDispatcher() {
+            public void dispatchEvent(XEvent ev) {
+                switch (ev.get_type()) {
+                  case PropertyNotify:
+                      XPropertyEvent xpe = ev.get_xproperty();
+
+                      awtLock();
+                      try {
+                          timeStamp = xpe.get_time();
+                          timeStampUpdated = true;
+                          awtLockNotifyAll();
+                      } finally {
+                          awtUnlock();
+                      }
+
+                      break;
+                }
+            }
+        };
+
+    private static XAtom _XA_JAVA_TIME_PROPERTY_ATOM;
+
+    static long getCurrentServerTime() {
+        awtLock();
+        try {
+            try {
+                if (!initialized) {
+                    XToolkit.addEventDispatcher(XBaseWindow.getXAWTRootWindow().getWindow(),
+                                                timeFetcher);
+                    _XA_JAVA_TIME_PROPERTY_ATOM = XAtom.get("_SUNW_JAVA_AWT_TIME");
+                    initialized = true;
+                }
+                timeStampUpdated = false;
+                XlibWrapper.XChangeProperty(XToolkit.getDisplay(),
+                                            XBaseWindow.getXAWTRootWindow().getWindow(),
+                                            _XA_JAVA_TIME_PROPERTY_ATOM.getAtom(), XAtom.XA_ATOM, 32,
+                                            PropModeAppend,
+                                            0, 0);
+                XlibWrapper.XFlush(XToolkit.getDisplay());
+
+                if (isToolkitThread()) {
+                    XEvent event = new XEvent();
+                    try {
+                        XlibWrapper.XWindowEvent(XToolkit.getDisplay(),
+                                                 XBaseWindow.getXAWTRootWindow().getWindow(),
+                                                 XConstants.PropertyChangeMask,
+                                                 event.pData);
+                        timeFetcher.dispatchEvent(event);
+                    }
+                    finally {
+                        event.dispose();
+                    }
+                }
+                else {
+                    while (!timeStampUpdated) {
+                        awtLockWait();
+                    }
+                }
+            } catch (InterruptedException ie) {
+            // Note: the returned timeStamp can be incorrect in this case.
+                if (log.isLoggable(Level.FINE)) log.fine("Catched exception, timeStamp may not be correct (ie = " + ie + ")");
+            }
+        } finally {
+            awtUnlock();
+        }
+        return timeStamp;
+    }
+    protected void initializeDesktopProperties() {
+        desktopProperties.put("DnD.Autoscroll.initialDelay",     Integer.valueOf(50));
+        desktopProperties.put("DnD.Autoscroll.interval",         Integer.valueOf(50));
+        desktopProperties.put("DnD.Autoscroll.cursorHysteresis", Integer.valueOf(5));
+        // Don't want to call getMultiClickTime() if we are headless
+        if (!GraphicsEnvironment.isHeadless()) {
+            desktopProperties.put("awt.multiClickInterval",
+                                  Integer.valueOf(getMultiClickTime()));
+            desktopProperties.put("awt.mouse.numButtons",
+                                  Integer.valueOf(getNumMouseButtons()));
+        }
+    }
+
+    private int getNumMouseButtons() {
+        awtLock();
+        try {
+            return XlibWrapper.XGetPointerMapping(XToolkit.getDisplay(), 0, 0);
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    private final static String prefix  = "DnD.Cursor.";
+    private final static String postfix = ".32x32";
+    private static final String dndPrefix  = "DnD.";
+
+    protected Object lazilyLoadDesktopProperty(String name) {
+        if (name.startsWith(prefix)) {
+            String cursorName = name.substring(prefix.length(), name.length()) + postfix;
+
+            try {
+                return Cursor.getSystemCustomCursor(cursorName);
+            } catch (AWTException awte) {
+                throw new RuntimeException("cannot load system cursor: " + cursorName, awte);
+            }
+        }
+
+        if (name.equals("awt.dynamicLayoutSupported")) {
+            return  Boolean.valueOf(isDynamicLayoutSupported());
+        }
+
+        if (initXSettingsIfNeeded(name)) {
+            return desktopProperties.get(name);
+        }
+
+        return super.lazilyLoadDesktopProperty(name);
+    }
+
+    public synchronized void addPropertyChangeListener(String name, PropertyChangeListener pcl) {
+        initXSettingsIfNeeded(name);
+        super.addPropertyChangeListener(name, pcl);
+    }
+
+    /**
+     * Initializes XAWTXSettings if a property for a given property name is provided by
+     * XSettings and they are not initialized yet.
+     *
+     * @return true if the method has initialized XAWTXSettings.
+     */
+    private boolean initXSettingsIfNeeded(final String propName) {
+        if (!loadedXSettings &&
+            (propName.startsWith("gnome.") ||
+             propName.equals(SunToolkit.DESKTOPFONTHINTS) ||
+             propName.startsWith(dndPrefix)))
+        {
+            loadedXSettings = true;
+            if (!GraphicsEnvironment.isHeadless()) {
+                loadXSettings();
+                /* If no desktop font hint could be retrieved, check for
+                 * KDE running KWin and retrieve settings from fontconfig.
+                 * If that isn't found let SunToolkit will see if there's a
+                 * system property set by a user.
+                 */
+                if (desktopProperties.get(SunToolkit.DESKTOPFONTHINTS) == null) {
+                    if (XWM.isKDE2()) {
+                        Object hint = FontManager.getFontConfigAAHint();
+                        if (hint != null) {
+                            /* set the fontconfig/KDE property so that
+                             * getDesktopHints() below will see it
+                             * and set the public property.
+                             */
+                            desktopProperties.put(UNIXToolkit.FONTCONFIGAAHINT,
+                                                  hint);
+                        }
+                    }
+                    desktopProperties.put(SunToolkit.DESKTOPFONTHINTS,
+                                          SunToolkit.getDesktopFontHints());
+                }
+
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private void loadXSettings() {
+       xs = new XAWTXSettings();
+    }
+
+    /**
+     * Callback from the native side indicating some, or all, of the
+     * desktop properties have changed and need to be reloaded.
+     * <code>data</code> is the byte array directly from the x server and
+     * may be in little endian format.
+     * <p>
+     * NB: This could be called from any thread if triggered by
+     * <code>loadXSettings</code>.  It is called from the System EDT
+     * if triggered by an XSETTINGS change.
+     */
+    void parseXSettings(int screen_XXX_ignored,Map updatedSettings) {
+
+        if (updatedSettings == null || updatedSettings.isEmpty()) {
+            return;
+        }
+
+        Iterator i = updatedSettings.entrySet().iterator();
+        while (i.hasNext()) {
+            Map.Entry e = (Map.Entry)i.next();
+            String name = (String)e.getKey();
+
+            name = "gnome." + name;
+            setDesktopProperty(name, e.getValue());
+            log.fine("name = " + name + " value = " + e.getValue());
+
+            // XXX: we probably want to do something smarter.  In
+            // particular, "Net" properties are of interest to the
+            // "core" AWT itself.  E.g.
+            //
+            // Net/DndDragThreshold -> ???
+            // Net/DoubleClickTime  -> awt.multiClickInterval
+        }
+
+        setDesktopProperty(SunToolkit.DESKTOPFONTHINTS,
+                           SunToolkit.getDesktopFontHints());
+
+        Integer dragThreshold = null;
+        synchronized (this) {
+            dragThreshold = (Integer)desktopProperties.get("gnome.Net/DndDragThreshold");
+        }
+        if (dragThreshold != null) {
+            setDesktopProperty("DnD.gestureMotionThreshold", dragThreshold);
+        }
+
+    }
+
+
+
+    static int altMask;
+    static int metaMask;
+    static int numLockMask;
+    static int modeSwitchMask;
+    static int modLockIsShiftLock;
+
+    /* Like XKeysymToKeycode, but ensures that keysym is the primary
+    * symbol on the keycode returned.  Returns zero otherwise.
+    */
+    static int keysymToPrimaryKeycode(long sym) {
+        awtLock();
+        try {
+            int code = XlibWrapper.XKeysymToKeycode(getDisplay(), sym);
+            if (code == 0) {
+                return 0;
+            }
+            long primary = XlibWrapper.XKeycodeToKeysym(getDisplay(), code, 0);
+            if (sym != primary) {
+                return 0;
+            }
+            return code;
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    /* Assign meaning - alt, meta, etc. - to X modifiers mod1 ... mod5.
+     * Only consider primary symbols on keycodes attached to modifiers.
+     */
+    static void setupModifierMap() {
+        final int metaL = keysymToPrimaryKeycode(XKeySymConstants.XK_Meta_L);
+        final int metaR = keysymToPrimaryKeycode(XKeySymConstants.XK_Meta_R);
+        final int altL = keysymToPrimaryKeycode(XKeySymConstants.XK_Alt_L);
+        final int altR = keysymToPrimaryKeycode(XKeySymConstants.XK_Alt_R);
+        final int numLock = keysymToPrimaryKeycode(XKeySymConstants.XK_Num_Lock);
+        final int modeSwitch = keysymToPrimaryKeycode(XKeySymConstants.XK_Mode_switch);
+        final int shiftLock = keysymToPrimaryKeycode(XKeySymConstants.XK_Shift_Lock);
+        final int capsLock  = keysymToPrimaryKeycode(XKeySymConstants.XK_Caps_Lock);
+
+        final int modmask[] = { ShiftMask, LockMask, ControlMask, Mod1Mask,
+            Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask };
+
+        log.fine("In setupModifierMap");
+        awtLock();
+        try {
+            XModifierKeymap modmap = new XModifierKeymap(
+                 XlibWrapper.XGetModifierMapping(getDisplay()));
+
+            int nkeys = modmap.get_max_keypermod();
+
+            long map_ptr = modmap.get_modifiermap();
+
+            for (int modn = XConstants.Mod1MapIndex;
+                 modn <= XConstants.Mod5MapIndex;
+                 ++modn)
+            {
+                for (int i = 0; i < nkeys; ++i) {
+                    /* for each keycode attached to this modifier */
+                    int keycode = Native.getUByte(map_ptr, modn * nkeys + i);
+
+                    if (keycode == 0) {
+                        break;
+                    }
+                    if (metaMask == 0 &&
+                        (keycode == metaL || keycode == metaR))
+                    {
+                        metaMask = modmask[modn];
+                        break;
+                    }
+                    if (altMask == 0 && (keycode == altL || keycode == altR)) {
+                        altMask = modmask[modn];
+                        break;
+                    }
+                    if (numLockMask == 0 && keycode == numLock) {
+                        numLockMask = modmask[modn];
+                        break;
+                    }
+                    if (modeSwitchMask == 0 && keycode == modeSwitch) {
+                        modeSwitchMask = modmask[modn];
+                        break;
+                    }
+                    continue;
+                }
+            }
+            modLockIsShiftLock = 0;
+            for (int j = 0; j < nkeys; ++j) {
+                int keycode = Native.getUByte(map_ptr, XConstants.LockMapIndex * nkeys + j);
+                if (keycode == 0) {
+                    break;
+                }
+                if (keycode == shiftLock) {
+                    modLockIsShiftLock = 1;
+                    break;
+                }
+                if (keycode == capsLock) {
+                    break;
+                }
+            }
+            XlibWrapper.XFreeModifiermap(modmap.pData);
+        } finally {
+            awtUnlock();
+        }
+        if (log.isLoggable(Level.FINE)) {
+            log.fine("metaMask = " + metaMask);
+            log.fine("altMask = " + altMask);
+            log.fine("numLockMask = " + numLockMask);
+            log.fine("modeSwitchMask = " + modeSwitchMask);
+            log.fine("modLockIsShiftLock = " + modLockIsShiftLock);
+        }
+    }
+
+
+    private static SortedMap timeoutTasks;
+
+    /**
+     * Removed the task from the list of waiting-to-be called tasks.
+     * If the task has been scheduled several times removes only first one.
+     */
+    static void remove(Runnable task) {
+        if (task == null) {
+            throw new NullPointerException("task is null");
+        }
+        awtLock();
+        try {
+            if (timeoutTaskLog.isLoggable(Level.FINER)) {
+                timeoutTaskLog.finer("Removing task " + task);
+            }
+            if (timeoutTasks == null) {
+                if (timeoutTaskLog.isLoggable(Level.FINER)) {
+                    timeoutTaskLog.finer("Task is not scheduled");
+                }
+                return;
+            }
+            Collection values = timeoutTasks.values();
+            Iterator iter = values.iterator();
+            while (iter.hasNext()) {
+                java.util.List list = (java.util.List)iter.next();
+                boolean removed = false;
+                if (list.contains(task)) {
+                    list.remove(task);
+                    if (list.isEmpty()) {
+                        iter.remove();
+                    }
+                    break;
+                }
+            }
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    static native void wakeup_poll();
+
+    /**
+     * Registers a Runnable which <code>run()</code> method will be called
+     * once on the toolkit thread when a specified interval of time elapses.
+     *
+     * @param task a Runnable which <code>run</code> method will be called
+     *        on the toolkit thread when <code>interval</code> milliseconds
+     *        elapse
+     * @param interval an interal in milliseconds
+     *
+     * @throws NullPointerException if <code>task</code> is <code>null</code>
+     * @throws IllegalArgumentException if <code>interval</code> is not positive
+     */
+    static void schedule(Runnable task, long interval) {
+        if (task == null) {
+            throw new NullPointerException("task is null");
+        }
+        if (interval <= 0) {
+            throw new IllegalArgumentException("interval " + interval + " is not positive");
+        }
+
+        awtLock();
+        try {
+            if (timeoutTaskLog.isLoggable(Level.FINER)) {
+                timeoutTaskLog.log(Level.FINER, "XToolkit.schedule(): current time={0}" +
+                                   ";  interval={1}" +
+                                   ";  task being added={2}" + ";  tasks before addition={3}", new Object[] {
+                                   Long.valueOf(System.currentTimeMillis()), Long.valueOf(interval), task, timeoutTasks});
+            }
+
+            if (timeoutTasks == null) {
+                timeoutTasks = new TreeMap();
+            }
+
+            Long time = Long.valueOf(System.currentTimeMillis() + interval);
+            java.util.List tasks = (java.util.List)timeoutTasks.get(time);
+            if (tasks == null) {
+                tasks = new ArrayList(1);
+                timeoutTasks.put(time, tasks);
+            }
+            tasks.add(task);
+
+
+            if (timeoutTasks.get(timeoutTasks.firstKey()) == tasks && tasks.size() == 1) {
+                // Added task became first task - poll won't know
+                // about it so we need to wake it up
+                wakeup_poll();
+            }
+        }  finally {
+            awtUnlock();
+        }
+    }
+
+    private long getNextTaskTime() {
+        awtLock();
+        try {
+            if (timeoutTasks == null || timeoutTasks.isEmpty()) {
+                return -1L;
+            }
+            return (Long)timeoutTasks.firstKey();
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    /**
+     * Executes mature timeout tasks registered with schedule().
+     * Called from run() under awtLock.
+     */
+    private static void callTimeoutTasks() {
+        if (timeoutTaskLog.isLoggable(Level.FINER)) {
+            timeoutTaskLog.log(Level.FINER, "XToolkit.callTimeoutTasks(): current time={0}" +
+                               ";  tasks={1}",  new Object[] {Long.valueOf(System.currentTimeMillis()), timeoutTasks});
+        }
+
+        if (timeoutTasks == null || timeoutTasks.isEmpty()) {
+            return;
+        }
+
+        Long currentTime = Long.valueOf(System.currentTimeMillis());
+        Long time = (Long)timeoutTasks.firstKey();
+
+        while (time.compareTo(currentTime) <= 0) {
+            java.util.List tasks = (java.util.List)timeoutTasks.remove(time);
+
+            for (Iterator iter = tasks.iterator(); iter.hasNext();) {
+                Runnable task = (Runnable)iter.next();
+
+                if (timeoutTaskLog.isLoggable(Level.FINER)) {
+                    timeoutTaskLog.log(Level.FINER, "XToolkit.callTimeoutTasks(): current time={0}" +
+                                       ";  about to run task={1}", new Object[] {Long.valueOf(currentTime), task});
+                }
+
+                try {
+                    task.run();
+                } catch (ThreadDeath td) {
+                    throw td;
+                } catch (Throwable thr) {
+                    processException(thr);
+                }
+            }
+
+            if (timeoutTasks.isEmpty()) {
+                break;
+            }
+            time = (Long)timeoutTasks.firstKey();
+        }
+    }
+
+    static long getAwtDefaultFg() {
+        return awt_defaultFg;
+    }
+
+    static boolean isLeftMouseButton(MouseEvent me) {
+        switch (me.getID()) {
+          case MouseEvent.MOUSE_PRESSED:
+          case MouseEvent.MOUSE_RELEASED:
+              return (me.getButton() == MouseEvent.BUTTON1);
+          case MouseEvent.MOUSE_ENTERED:
+          case MouseEvent.MOUSE_EXITED:
+          case MouseEvent.MOUSE_CLICKED:
+          case MouseEvent.MOUSE_DRAGGED:
+              return ((me.getModifiersEx() & InputEvent.BUTTON1_DOWN_MASK) != 0);
+        }
+        return false;
+    }
+
+    static boolean isRightMouseButton(MouseEvent me) {
+        int numButtons = ((Integer)getDefaultToolkit().getDesktopProperty("awt.mouse.numButtons")).intValue();
+        switch (me.getID()) {
+          case MouseEvent.MOUSE_PRESSED:
+          case MouseEvent.MOUSE_RELEASED:
+              return ((numButtons == 2 && me.getButton() == MouseEvent.BUTTON2) ||
+                       (numButtons > 2 && me.getButton() == MouseEvent.BUTTON3));
+          case MouseEvent.MOUSE_ENTERED:
+          case MouseEvent.MOUSE_EXITED:
+          case MouseEvent.MOUSE_CLICKED:
+          case MouseEvent.MOUSE_DRAGGED:
+              return ((numButtons == 2 && (me.getModifiersEx() & InputEvent.BUTTON2_DOWN_MASK) != 0) ||
+                      (numButtons > 2 && (me.getModifiersEx() & InputEvent.BUTTON3_DOWN_MASK) != 0));
+        }
+        return false;
+    }
+
+    static long reset_time_utc;
+    static final long WRAP_TIME_MILLIS = Integer.MAX_VALUE;
+
+    /*
+     * This function converts between the X server time (number of milliseconds
+     * since the last server reset) and the UTC time for the 'when' field of an
+     * InputEvent (or another event type with a timestamp).
+     */
+    static long nowMillisUTC_offset(long server_offset) {
+        // ported from awt_util.c
+        /*
+         * Because Time is of type 'unsigned long', it is possible that Time will
+         * never wrap when using 64-bit Xlib. However, if a 64-bit client
+         * connects to a 32-bit server, I suspect the values will still wrap. So
+         * we should not attempt to remove the wrap checking even if _LP64 is
+         * true.
+         */
+
+        long current_time_utc = System.currentTimeMillis();
+        if (log.isLoggable(Level.FINER)) {
+            log.finer("reset_time=" + reset_time_utc + ", current_time=" + current_time_utc
+                      + ", server_offset=" + server_offset + ", wrap_time=" + WRAP_TIME_MILLIS);
+        }
+
+        if ((current_time_utc - reset_time_utc) > WRAP_TIME_MILLIS) {
+            reset_time_utc = System.currentTimeMillis() - getCurrentServerTime();
+        }
+
+        if (log.isLoggable(Level.FINER)) {
+            log.finer("result = " + (reset_time_utc + server_offset));
+        }
+        return reset_time_utc + server_offset;
+    }
+
+    /**
+     * @see sun.awt.SunToolkit#needsXEmbedImpl
+     */
+    protected boolean needsXEmbedImpl() {
+        // XToolkit implements supports for XEmbed-client protocol and
+        // requires the supports from the embedding host for it to work.
+        return true;
+    }
+
+    public boolean isModalityTypeSupported(Dialog.ModalityType modalityType) {
+        return (modalityType == null) ||
+               (modalityType == Dialog.ModalityType.MODELESS) ||
+               (modalityType == Dialog.ModalityType.DOCUMENT_MODAL) ||
+               (modalityType == Dialog.ModalityType.APPLICATION_MODAL) ||
+               (modalityType == Dialog.ModalityType.TOOLKIT_MODAL);
+    }
+
+    public boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType exclusionType) {
+        return (exclusionType == null) ||
+               (exclusionType == Dialog.ModalExclusionType.NO_EXCLUDE) ||
+               (exclusionType == Dialog.ModalExclusionType.APPLICATION_EXCLUDE) ||
+               (exclusionType == Dialog.ModalExclusionType.TOOLKIT_EXCLUDE);
+    }
+
+    static EventQueue getEventQueue(Object target) {
+        AppContext appContext = targetToAppContext(target);
+        if (appContext != null) {
+            return (EventQueue)appContext.get(AppContext.EVENT_QUEUE_KEY);
+        }
+        return null;
+    }
+
+    static void removeSourceEvents(EventQueue queue, Object source, boolean removeAllEvents) {
+        try {
+            m_removeSourceEvents.invoke(queue, source, removeAllEvents);
+        }
+        catch (IllegalAccessException e)
+        {
+            e.printStackTrace();
+        }
+        catch (InvocationTargetException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public boolean isAlwaysOnTopSupported() {
+        Iterator iter = XWM.getWM().getProtocols(XLayerProtocol.class).iterator();
+        while (iter.hasNext()) {
+            XLayerProtocol proto = (XLayerProtocol)iter.next();
+            if (proto.supportsLayer(XLayerProtocol.LAYER_ALWAYS_ON_TOP)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public boolean useBufferPerWindow() {
+        return XToolkit.getBackingStoreType() == XConstants.NotUseful;
+    }
+
+    /**
+     * Returns one of XConstants: NotUseful, WhenMapped or Always.
+     * If backing store is not available on at least one screen, or
+     * java2d uses DGA(which conflicts with backing store) on at least one screen,
+     * or the string system property "sun.awt.backingStore" is neither "Always"
+     * nor "WhenMapped", then the method returns XConstants.NotUseful.
+     * Otherwise, if the system property "sun.awt.backingStore" is "WhenMapped",
+     * then the method returns XConstants.WhenMapped.
+     * Otherwise (i.e., if the system property "sun.awt.backingStore" is "Always"),
+     * the method returns XConstants.Always.
+     */
+    static int getBackingStoreType() {
+        return backingStoreType;
+    }
+
+    private static void setBackingStoreType() {
+        String prop = (String)AccessController.doPrivileged(
+                new sun.security.action.GetPropertyAction("sun.awt.backingStore"));
+
+        if (prop == null) {
+            backingStoreType = XConstants.NotUseful;
+            if (backingStoreLog.isLoggable(Level.CONFIG)) {
+                backingStoreLog.config("The system property sun.awt.backingStore is not set" +
+                                       ", by default backingStore=NotUseful");
+            }
+            return;
+        }
+
+        if (backingStoreLog.isLoggable(Level.CONFIG)) {
+            backingStoreLog.config("The system property sun.awt.backingStore is " + prop);
+        }
+        prop = prop.toLowerCase();
+        if (prop.equals("always")) {
+            backingStoreType = XConstants.Always;
+        } else if (prop.equals("whenmapped")) {
+            backingStoreType = XConstants.WhenMapped;
+        } else {
+            backingStoreType = XConstants.NotUseful;
+        }
+
+        if (backingStoreLog.isLoggable(Level.CONFIG)) {
+            backingStoreLog.config("backingStore(as provided by the system property)=" +
+                                   ( backingStoreType == XConstants.NotUseful ? "NotUseful"
+                                     : backingStoreType == XConstants.WhenMapped ?
+                                     "WhenMapped" : "Always") );
+        }
+
+        if (sun.java2d.x11.X11SurfaceData.isDgaAvailable()) {
+            backingStoreType = XConstants.NotUseful;
+
+            if (backingStoreLog.isLoggable(Level.CONFIG)) {
+                backingStoreLog.config("DGA is available, backingStore=NotUseful");
+            }
+
+            return;
+        }
+
+        awtLock();
+        try {
+            int screenCount = XlibWrapper.ScreenCount(getDisplay());
+            for (int i = 0; i < screenCount; i++) {
+                if (XlibWrapper.DoesBackingStore(XlibWrapper.ScreenOfDisplay(getDisplay(), i))
+                        == XConstants.NotUseful) {
+                    backingStoreType = XConstants.NotUseful;
+
+                    if (backingStoreLog.isLoggable(Level.CONFIG)) {
+                        backingStoreLog.config("Backing store is not available on the screen " +
+                                               i + ", backingStore=NotUseful");
+                    }
+
+                    return;
+                }
+            }
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    /**
+     * One of XConstants: NotUseful, WhenMapped or Always.
+     */
+    private static int backingStoreType;
+
+    static boolean awt_ServerInquired = false;
+    static boolean awt_IsXsunServer    = false;
+    static boolean awt_XKBInquired    = false;
+    static boolean awt_UseXKB         = false;
+    /**
+       Try to understand if it is Xsun server.
+       By now (2005) Sun is vendor of Xsun and Xorg servers; we only return true if Xsun is running.
+    */
+    static boolean isXsunServer() {
+        awtLock();
+        try {
+            if( awt_ServerInquired ) {
+                return awt_IsXsunServer;
+            }
+            if( ! XlibWrapper.ServerVendor(getDisplay()).startsWith("Sun Microsystems") ) {
+                awt_ServerInquired = true;
+                awt_IsXsunServer = false;
+                return false;
+            }
+            // Now, it's Sun. It still may be Xorg though, eg on Solaris 10, x86.
+            // Today (2005), VendorRelease of Xorg is a Big Number unlike Xsun.
+            if( XlibWrapper.VendorRelease(getDisplay()) > 10000 ) {
+                awt_ServerInquired = true;
+                awt_IsXsunServer = false;
+                return false;
+            }
+            awt_ServerInquired = true;
+            awt_IsXsunServer = true;
+            return true;
+        } finally {
+            awtUnlock();
+        }
+    }
+    /**
+      Query XKEYBOARD extension.
+    */
+    static boolean isXKBenabled() {
+        awtLock();
+        try {
+            if( awt_XKBInquired ) {
+                return awt_UseXKB;
+            }
+            awt_XKBInquired = true;
+            String name = "XKEYBOARD";
+            awt_UseXKB = XlibWrapper.XQueryExtension( getDisplay(), name, XlibWrapper.larg1, XlibWrapper.larg2, XlibWrapper.larg3);
+            return awt_UseXKB;
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    private static long eventNumber;
+    public static long getEventNumber() {
+        awtLock();
+        try {
+            return eventNumber;
+        } finally {
+            awtUnlock();
+        }
+    }
+
+    private static XEventDispatcher oops_waiter;
+    private static boolean oops_updated;
+    private static boolean oops_failed;
+    private XAtom oops;
+    private static final long WORKAROUND_SLEEP = 100;
+
+    /**
+     * @inheritDoc
+     */
+    protected boolean syncNativeQueue(final long timeout) {
+        XBaseWindow win = XBaseWindow.getXAWTRootWindow();
+
+        if (oops_waiter == null) {
+            oops_waiter = new XEventDispatcher() {
+                    public void dispatchEvent(XEvent e) {
+                        if (e.get_type() == SelectionNotify) {
+                            XSelectionEvent pe = e.get_xselection();
+                            if (pe.get_property() == oops.getAtom()) {
+                                oops_updated = true;
+                                awtLockNotifyAll();
+                            } else if (pe.get_selection() == XAtom.get("WM_S0").getAtom() &&
+                                       pe.get_target() == XAtom.get("VERSION").getAtom() &&
+                                       pe.get_property() == 0 &&
+                                       XlibWrapper.XGetSelectionOwner(getDisplay(), XAtom.get("WM_S0").getAtom()) == 0)
+                            {
+                                // WM forgot to acquire selection  or there is no WM
+                                oops_failed = true;
+                                awtLockNotifyAll();
+                            }
+
+                        }
+                    }
+                };
+        }
+
+        if (oops == null) {
+            oops = XAtom.get("OOPS");
+        }
+
+        awtLock();
+        try {
+            addEventDispatcher(win.getWindow(), oops_waiter);
+
+            oops_updated = false;
+            oops_failed = false;
+            // Wait for selection notify for oops on win
+            long event_number = getEventNumber();
+            XAtom atom = XAtom.get("WM_S0");
+            eventLog.log(Level.FINER, "WM_S0 selection owner {0}", new Object[] {XlibWrapper.XGetSelectionOwner(getDisplay(), atom.getAtom())});
+            XlibWrapper.XConvertSelection(getDisplay(), atom.getAtom(),
+                                          XAtom.get("VERSION").getAtom(), oops.getAtom(),
+                                          win.getWindow(), XlibWrapper.CurrentTime);
+            XSync();
+
+
+            eventLog.finer("Requested OOPS");
+
+            long start = System.currentTimeMillis();
+            while (!oops_updated && !oops_failed) {
+                try {
+                    awtLockWait(timeout);
+                } catch (InterruptedException e) {
+                    throw new RuntimeException(e);
+                }
+                // This "while" is a protection from spurious
+                // wake-ups.  However, we shouldn't wait for too long
+                if ((System.currentTimeMillis() - start > timeout) && timeout >= 0) {
+                    throw new OperationTimedOut(Long.toString(System.currentTimeMillis() - start));
+                }
+            }
+            if (oops_failed && getEventNumber() - event_number == 1) {
+                // If selection update failed we can simply wait some time
+                // hoping some events will arrive
+                awtUnlock();
+                eventLog.log(Level.FINEST, "Emergency sleep");
+                try {
+                    Thread.sleep(WORKAROUND_SLEEP);
+                } catch (InterruptedException ie) {
+                    throw new RuntimeException(ie);
+                } finally {
+                    awtLock();
+                }
+            }
+            return getEventNumber() - event_number > 2;
+        } finally {
+            removeEventDispatcher(win.getWindow(), oops_waiter);
+            eventLog.log(Level.FINER, "Exiting syncNativeQueue");
+            awtUnlock();
+        }
+    }
+    public void grab(Window w) {
+        if (w.getPeer() != null) {
+            ((XWindowPeer)w.getPeer()).setGrab(true);
+        }
+    }
+
+    public void ungrab(Window w) {
+        if (w.getPeer() != null) {
+           ((XWindowPeer)w.getPeer()).setGrab(false);
+        }
+    }
+    /**
+     * Returns if the java.awt.Desktop class is supported on the current
+     * desktop.
+     * <p>
+     * The methods of java.awt.Desktop class are supported on the Gnome desktop.
+     * Check if the running desktop is Gnome by checking the window manager.
+     */
+    public boolean isDesktopSupported(){
+        return XDesktopPeer.isDesktopSupported();
+    }
+
+    public DesktopPeer createDesktopPeer(Desktop target){
+        return new XDesktopPeer();
+    }
+
+    public static native void setNoisyXErrorHandler();
+}