test/jdk/javax/swing/plaf/nimbus/8041725/bug8041725.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 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 8041725
 * @summary JList selection colors are not UIResource instances in Nimbus L&F
 * @author Anton Litvinov
 */

import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.plaf.nimbus.*;

public class bug8041725 {
    public static void main(String[] args) throws Exception {
        UIManager.setLookAndFeel(new NimbusLookAndFeel());
        SwingUtilities.invokeAndWait(new Runnable() {
            @Override
            public void run() {
                JFrame frame = new JFrame("bug8041725");
                frame.setSize(200, 200);
                JList list = new JList(new String[]{"Item1", "Item2", "Item3"});
                frame.getContentPane().add(list);
                frame.pack();
                frame.setVisible(true);

                System.err.println("Test #1: No items are selected, list is enabled.");
                testSelectionColors(list);

                System.err.println("Test #2: No items are selected, list is disabled.");
                list.setEnabled(false);
                testSelectionColors(list);

                System.err.println("Test #3: One item is selected, list is disabled.");
                list.setSelectedIndex(0);
                testSelectionColors(list);

                System.err.println("Test #4: One item is selected, list is enabled.");
                list.setEnabled(true);
                testSelectionColors(list);

                frame.dispose();
            }
        });
    }

    private static void testSelectionColors(JList list) {
        Color selBackColor = list.getSelectionBackground();
        if (!(selBackColor instanceof UIResource)) {
            throw new RuntimeException(String.format(
                "JList.getSelectionBackground() returned instance of '%s' instead of UIResource.",
                selBackColor.getClass()));
        }
        Color selForeColor = list.getSelectionForeground();
        if (!(selForeColor instanceof UIResource)) {
            throw new RuntimeException(String.format(
                "JList.getSelectionForeground() returned instance of '%s' instead of UIResource.",
                selForeColor.getClass()));
        }
    }
}