test/jdk/javax/swing/text/View/8048110/bug8048110.java

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

/*
 * @test
 * @key headful
 * @bug 8048110
 * @summary Using tables in JTextPane leads to infinite loop in FlowLayout.layoutRow
 * @author Dmitry Markov
 * @run main bug8048110
 */

import javax.swing.*;
import javax.swing.text.Element;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLEditorKit;
import java.awt.*;

public class bug8048110 {
    private static Robot robot;
    private static Object lock = new Object();
    private static boolean isRealSyncPerformed = false;
    private static final String htmlText = "<table width=\"100%\" cellpadding=\"10\" cellspacing=\"5\" align=\"center\">" +
            "<tr><th align=\"left\" bgcolor=\"#bec3c6\">Devices</th><th align=\"left\" bgcolor=\"#bec3c6\">State</th></tr>" +
            "<tr><td align=\"left\" bgcolor=\"#bec3c6\">PC</td><td align=\"left\" bgcolor=\"#46a055\">Ok</td></tr></table>";

    public static void main(String[] args) throws Exception {
        robot = new Robot();
        SwingUtilities.invokeAndWait(new Runnable() {
            @Override
            public void run() {
                createAndShowGUI();
            }
        });

        Thread thread = new Thread() {
            @Override
            public void run() {
                robot.waitForIdle();
                synchronized (lock) {
                    isRealSyncPerformed = true;
                    lock.notifyAll();
                }
            }
        };
        thread.start();

        synchronized (lock) {
            if (!isRealSyncPerformed) {
                lock.wait(5000);
            }
        }

        if (!isRealSyncPerformed) {
            throw new RuntimeException("Test Failed!");
        }
    }

    private static void createAndShowGUI() {
        try {
            UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
        HTMLEditorKit editorKit = new HTMLEditorKit();
        JTextPane textPane = new JTextPane();
        textPane.setContentType("text/html");
        textPane.setEditorKit(editorKit);
        textPane.setText("Initial text without table");

        JFrame frame = new JFrame("bug8048110");
        frame.getContentPane().add(textPane, BorderLayout.CENTER);
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        frame.setSize(500, 200);
        frame.setVisible(true);

        textPane.setDocument(textPane.getEditorKit().createDefaultDocument());
        HTMLDocument htmlDocument = (HTMLDocument) textPane.getDocument();
        Element firstParagraph = findFirstElement(textPane.getDocument().getDefaultRootElement(), "p");

        try {
            htmlDocument.setInnerHTML(firstParagraph, htmlText);
        } catch (Exception ex) {
            throw new RuntimeException(ex);
        }
    }

    private static Element findFirstElement(Element e, String name) {
        String elementName = e.getName();
        if (elementName != null && elementName.equalsIgnoreCase(name)) {
            return e;
        }
        for (int i = 0; i < e.getElementCount(); i++) {
            Element result = findFirstElement(e.getElement(i), name);
            if (result != null) {
                return result;
            }
        }
        return null;
    }
}