/* * Copyright (c) 2016, 2017, 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. */ /** * @test * @key headful * @bug 6567433 * * @summary JComboBox.updateUI() invokes updateUI() on its cellrenderer via * SwingUtilities.updateComponentTreeUI(). * If the cellrenderer is a parent of this JComboBox the method recurses * endless. * This test tests that the fix is effective in avoiding recursion. * * @run main/othervm UpdateUIRecursionTest */ import java.awt.BorderLayout; import java.awt.Component; import javax.swing.DefaultListCellRenderer; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JList; import javax.swing.JScrollPane; import javax.swing.ListCellRenderer; import javax.swing.SwingUtilities; public class UpdateUIRecursionTest extends JFrame implements ListCellRenderer { JComboBox combo; DefaultListCellRenderer renderer; public UpdateUIRecursionTest() { super("UpdateUIRecursionTest"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setSize(400, 400); String[] listData = { "First", "Second", "Third", "Fourth", "Fifth", "Sixth" }; combo = new JComboBox(listData); combo.setRenderer(this); renderer = new DefaultListCellRenderer(); getContentPane().add(new JScrollPane(combo), BorderLayout.CENTER); setVisible(true); } public static void main(String[] args) throws Exception { SwingUtilities.invokeAndWait(new Runnable() { @Override public void run() { UpdateUIRecursionTest obj = new UpdateUIRecursionTest(); obj.test(); obj.disposeUI(); } }); } public void test() { combo.updateUI(); } public void disposeUI() { setVisible(false); dispose(); } public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean cellHasFocus) { return renderer.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus); } }