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 * 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.
 *
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 */

/*
 * @test
 * @key headful
 * @bug 4242228
 * @summary Tests that HTMLEditorKit.setText() doesn't throw exceptions
 * @author Peter Zhelezniakov
 */

import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.text.StyledEditorKit;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import java.awt.*;

public class bug4242228 {
    private static JTabbedPane tabPane;
    private static JFrame frame;

    public static void main(String[] argv) throws Exception {
        SwingUtilities.invokeAndWait(new Runnable() {
            @Override
            public void run() {
                frame = new JFrame("4242228 Test");

                JScrollPane sourcePane = new JScrollPane();
                final JTextPane htmlEditor = new JTextPane();
                final JTextPane sourceEditor = new JTextPane();
                final JScrollPane editorPane = new JScrollPane();

                tabPane = new JTabbedPane();
                htmlEditor.setText(" ");
                htmlEditor.setEditorKit(new HTMLEditorKit());

                sourceEditor.setText(" ");
                sourceEditor.setEditorKit(new StyledEditorKit());

                frame.setLayout(new BorderLayout());

                editorPane.getViewport().add(htmlEditor);

                tabPane.addTab("Editor", editorPane);
                tabPane.addChangeListener(new ChangeListener() {
                    public void stateChanged(ChangeEvent e) {
                        if (tabPane.getSelectedComponent() == editorPane) {
                            htmlEditor.setText(sourceEditor.getText());
                        } else {
                            sourceEditor.setText(htmlEditor.getText());
                        }
                    }
                });

                sourcePane.getViewport().add(sourceEditor);
                tabPane.addTab("Source", sourcePane);
                tabPane.setTabPlacement(SwingConstants.BOTTOM);
                htmlEditor.setDocument(new HTMLDocument());

                frame.add(tabPane);
                frame.setSize(400, 300);
                frame.setVisible(true);
            }
        });

        Robot robot = new Robot();
        robot.waitForIdle();

        SwingUtilities.invokeAndWait(new Runnable() {
            @Override
            public void run() {
                for (int i = 0; i < 50; i++) {
                    tabPane.setSelectedIndex(i % 2);
                }

                frame.dispose();
            }
        });
    }
}