test/jdk/javax/swing/MultiUIDefaults/4331767/bug4331767.java

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/* @test
   @bug 4331767
   @summary Tests that custom implementation of UIDefaults.getUIError() is
            called when an UI error occurs
   @author Peter Zhelezniakov
   @run main bug4331767
*/
import javax.swing.*;
import javax.swing.plaf.metal.MetalLookAndFeel;
import java.util.Locale;

public class bug4331767
{
    private static boolean passed = false;

    public static void main(String[] argv) {
        try {
            UIManager.setLookAndFeel(new BrokenLookAndFeel());
        } catch (Exception e) {
            throw new Error("Failed to set BrokenLookAndFeel, cannot test", e);
        }

        // This should call BrokenUIDefaults.getUIError()
        new JButton();

        if (!passed) {
            throw new RuntimeException("Failed: Custom getUIError() not called");
        }
    }

    static class BrokenUIDefaults extends UIDefaults {
        UIDefaults defaults;

        public BrokenUIDefaults(UIDefaults def) {
            defaults = def;
        }

        public Object get(Object key) {
            if ("ButtonUI".equals(key)) {
                System.err.println("[II]  Called BrokenUIDefaults.get(Object)");
                return "a nonexistent class";
            }
            return defaults.get(key);
        }

        public Object get(Object key, Locale l) {
            if ("ButtonUI".equals(key)) {
                System.err.println("[II]  Called BrokenUIDefaults.get(Object, Locale)");
                return "a nonexistent class";
            }
            return defaults.get(key, l);
        }

        protected void getUIError(String msg) {
            System.err.println("[II]  BrokenUIDefaults.getUIError() called, test passes");
            passed = true;
        }
    }

    static class BrokenLookAndFeel extends MetalLookAndFeel {
        UIDefaults defaults;

        public BrokenLookAndFeel() {
            defaults = new BrokenUIDefaults(super.getDefaults());
        }

        public UIDefaults getDefaults() {
            return defaults;
        }
    }
}