/*

 * Copyright (c) 2010, 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.

 *

 * 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

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 * questions.

 */

/* @test

 * @bug 6953396

 * @summary javax.swing.plaf.basic.BasicViewportUI.uninstallDefaults() is not called when UI is uninstalled

 * @author Alexander Potochkin

 */

import javax.swing.*;

import javax.swing.plaf.basic.BasicViewportUI;

public class bug6953396 {

    static volatile boolean flag;

    public static void main(String[] args) throws Exception {

        SwingUtilities.invokeAndWait(new Runnable() {

            @Override

            public void run() {

                BasicViewportUI ui = new BasicViewportUI() {

                    @Override

                    protected void installDefaults(JComponent c) {

                        super.installDefaults(c);

                        flag = true;

                    }

                    @Override

                    protected void uninstallDefaults(JComponent c) {

                        super.uninstallDefaults(c);

                        flag = false;

                    }

                };

                JViewport viewport = new JViewport();

                viewport.setUI(ui);

                viewport.setUI(null);

            }

        });

        if (flag) {

            throw new RuntimeException("uninstallDefaults() hasn't been called");

        }

    }

}