Name: nkR10003 Date: 10/16/2000


JavaDoc comments for method BasicListUI.installKeyboardActions state:
"... The actions just call out to protected methods, subclasses that
want to override or extend keyboard behavior should consider
just overriding those methods. This method is called at
installUI() time.

@see #selectPreviousIndex
@see #selectNextIndex
@see #installUI"

Actually overriding of selectPreviousIndex() and selectNextIndex()
methods has no effect.

Example below demonstrates this problem:
------------------example--------------------
import javax.swing.plaf.basic.*;
import javax.swing.*;
import java.awt.event.*;
import java.awt.Window;

class StubListUI extends BasicListUI {
    public StubListUI() {
        super();
    }
    
    protected void selectPreviousIndex() {
        System.out.println("select previous index");
        System.out.flush();
        super.selectPreviousIndex();
    }
    
    protected void selectNextIndex() {
        System.out.println("select next index");
        System.out.flush();
        super.selectPreviousIndex();
    }
}

public class test {
    public static void main(String[] args) {
        String[] data = {"one", "two", "three", "four", "five"};
        JList list = new JList(data);
        list.setSelectedIndex(0);
        StubListUI ui = new StubListUI();
        list.setUI(ui);
        JFrame frame = new JFrame("Test");
        frame.getContentPane().add(list);
        frame.setSize(100,
                (int)list.getPreferredScrollableViewportSize().
                                                        getHeight());
        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                Window w = e.getWindow();
                w.setVisible(false);
                w.dispose();
                System.out.println("Finish");
                System.out.flush();
                System.exit(0);
            }
        });
        frame.setVisible(true);
    }
}
----------------output:----------------------
Finish
---------------------------------------------
How to run the test:
    Compile and run example. Move the list selection with the arrow buttons.
    This actions should cause calls to selectPrevious(Next)Index methods
    and thus printing messages to System.out.
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