/*

 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package sun.awt.X11;

/**

 * This class represents AWT application root window functionality.

 * Object of this class is singleton, all window reference it to have

 * common logical ancestor

 */

class XRootWindow extends XBaseWindow {

    private static XRootWindow xawtRootWindow = null;

    static XRootWindow getInstance() {

        XToolkit.awtLock();

        try {

            if (xawtRootWindow == null) {

                xawtRootWindow = new XRootWindow();

                xawtRootWindow.init(xawtRootWindow.getDelayedParams().delete(DELAYED));

            }

            return xawtRootWindow;

        } finally {

            XToolkit.awtUnlock();

        }

    }

    private XRootWindow() {

        super(new XCreateWindowParams(new Object[] { DELAYED, Boolean.TRUE,

                                                     EVENT_MASK, XConstants.StructureNotifyMask }));

    }

    public void postInit(XCreateWindowParams params){

        super.postInit(params);

        setWMClass(getWMClass());

    }

    protected String getWMName() {

        return XToolkit.getAWTAppClassName();

    }

    protected String[] getWMClass() {

        return new String[] {XToolkit.getAWTAppClassName(), XToolkit.getAWTAppClassName()};

    }

  /* Fix 4976517.  Return awt_root_shell to XToolkit.c */

    private static long getXRootWindow() {

        return getXAWTRootWindow().getWindow();

    }

}