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Java example source code file (bug7189299.java)

This example Java source code file (bug7189299.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

actionlistener, awt, borderlayout, changelistener, defaultbuttonmodel, event, expected, gui, htmleditorkit, itemlistener, jeditorpane, jframe, override, runnable, runtimeexception, suntoolkit, swing, text

The bug7189299.java Java example source code

/*
 * Copyright (c) 2013, 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * Portions Copyright (c) 2013 IBM Corporation
 */
import java.awt.BorderLayout;
import java.awt.Toolkit;

import java.awt.event.ActionListener;
import javax.swing.DefaultButtonModel;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyleContext;
import javax.swing.text.html.HTMLEditorKit;
import sun.awt.SunToolkit;


/*
 * @test
 * @bug 8008289
 * @summary Shared ButtonModel instance should deregister previous listeners.
 * @author Frank Ding
 */
public class bug7189299 {

    private static JEditorPane html;
    private static JFrame frame;

    private static void setup() {
        /**
         * Note the input type is not restricted to "submit". Types "image",
         * "checkbox", "radio" have the same problem.
         */
        html = new JEditorPane("text/html",
                "<html>
" + "<input type=submit name=submit value=\"submit\"/>" + "</form>"); frame = new JFrame(); frame.setLayout(new BorderLayout()); frame.add(html, BorderLayout.CENTER); frame.setSize(200, 100); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } private static void doTest() { /* * Calling updateComponentTreeUI creates a new FormView instance with * its own associated JButton instance. The same DefaultButtonModel * instance is used for both FormView's. * * The action listeners associated with (the JButton for) the first * FormView should be unregistered from this common DefaultButtonModel, * such that only those for the new FormView remain. */ SwingUtilities.updateComponentTreeUI(html); } private static void verifySingleDefaultButtonModelListener() { HTMLEditorKit htmlEditorKit = (HTMLEditorKit) html.getEditorKit(); StyleContext.NamedStyle style = ((StyleContext.NamedStyle) htmlEditorKit .getInputAttributes()); DefaultButtonModel model = ((DefaultButtonModel) style .getAttribute(StyleConstants.ModelAttribute)); ActionListener[] listeners = model.getActionListeners(); int actionListenerNum = listeners.length; if (actionListenerNum != 1) { throw new RuntimeException( "Expected single ActionListener object registered with " + "DefaultButtonModel; found " + actionListenerNum + " listeners registered."); } int changeListenerNum = model.getChangeListeners().length; if (changeListenerNum != 1) { throw new RuntimeException( "Expected at most one ChangeListener object registered " + "with DefaultButtonModel; found " + changeListenerNum + " listeners registered."); } int itemListenerNum = model.getItemListeners().length; if (itemListenerNum != 1) { throw new RuntimeException( "Expected at most one ItemListener object registered " + "with DefaultButtonModel; found " + itemListenerNum + " listeners registered."); } } public static void main(String[] args) throws Exception { final SunToolkit toolkit = ((SunToolkit) Toolkit.getDefaultToolkit()); SwingUtilities.invokeAndWait(new Runnable() { @Override public void run() { setup(); } }); toolkit.realSync(); SwingUtilities.invokeAndWait(new Runnable() { @Override public void run() { try { verifySingleDefaultButtonModelListener(); doTest(); verifySingleDefaultButtonModelListener(); } finally { frame.dispose(); } } }); } }

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