Name: jk109818 Date: 04/01/2003


FULL PRODUCT VERSION :
since 1.4.0, still in 1.4.1_02

FULL OS VERSION :
Windows NT 4.0, Windows XP

A DESCRIPTION OF THE PROBLEM :
I created a JSpinner with a SpinnerNumberModel and a ChangeListener that
listens for value-changes of the Spinner. The Listener validates the
value and displays a JOptionPane if a special value is reached. While
the JOptionPane is visible the Spinner keeps spinning the values until
either the JOptionPane is closed or the max/min value is reached.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Start the application given in the Source-Code Section and increase the
Spinner's value. When the spinner reaches the value "21" a JOptionPane will be
displayed and the Spinner runs to value 50 which is the maximum value.


EXPECTED VERSUS ACTUAL BEHAVIOR :
I would expect the Spinner's value to stay at the value that was
visible before the JOptionPane opended. ("21" in the example).
When the spinner reaches the value "21" a JOptionPane will be displayed
and the Spinner runs to value 50 which is the maximum value.


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JSpinner;
import javax.swing.SpinnerNumberModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class SpinnerFrame extends JFrame implements ChangeListener {

    private JSpinner spinner;

    private boolean changing;

    private SpinnerFrame() {
        super();
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        getContentPane().add(getSpinner());
        setSize(80,60);
        setLocation(200, 300);
        setVisible(true);
        changing = false;
    }
    
    private JSpinner getSpinner() {
        if (spinner == null) {
            spinner = new JSpinner();
            spinner.setModel(new SpinnerNumberModel(10, 1, 50, 1));
            spinner.addChangeListener(this);
        }
        return spinner;
    }

    public void stateChanged(ChangeEvent e) {
        JSpinner spinner = (JSpinner) e.getSource();
        int value = ((Integer) spinner.getValue()).intValue();
        System.out.println("Changed to " + value);
        if (changing) {
            return;
        }
        changing = true;
        if (value > 20) {
            JOptionPane.showMessageDialog(this, "20 exceeded");
        }
        changing = false;
    }

    public static void main(String[] args) {
        new SpinnerFrame();
    }
}

---------- END SOURCE ----------
(Review ID: 183126)
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