Java Swing How to - Create custom renderer for JSpinner to show customized content icons

Question

We would like to know how to create custom renderer for JSpinner to show customized content icons.
Answer

//from  w  ww .  j  a  va  2s .c o  m


  
/*
Java Swing, 2nd Edition
By Marc Loy, Robert Eckstein, Dave Wood, James Elliott, Brian Cole
ISBN: 0-596-00408-7
Publisher: O'Reilly 
*/

// IconSpinner.java
//An implementation of JSpinner with customized content--icons in this case.
//A standard spinner model is used with a custom editor (IconEditor.java).
//

import java.awt.Container;
import java.awt.GridLayout;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSpinner;
import javax.swing.SpinnerListModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class Main extends JFrame {

    public Main() {
        super("JSpinner Icon Test");
        setSize(300, 80);
        setDefaultCloseOperation(EXIT_ON_CLOSE);

        Container c = getContentPane();
        c.setLayout(new GridLayout(0, 2));

        Icon nums[] = new Icon[] { new ImageIcon("1.gif"),
                new ImageIcon("2.gif"), new ImageIcon("3.gif"),
                new ImageIcon("4.gif"), new ImageIcon("5.gif"),
                new ImageIcon("6.gif") };
        JSpinner s1 = new JSpinner(new SpinnerListModel(nums));
        s1.setEditor(new IconEditor(s1));
        c.add(new JLabel(" Icon Spinner"));
        c.add(s1);

        setVisible(true);
    }

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

class IconEditor extends JLabel implements ChangeListener {

    JSpinner spinner;

    Icon icon;

    public IconEditor(JSpinner s) {
        super((Icon) s.getValue(), CENTER);
        icon = (Icon) s.getValue();
        spinner = s;
        spinner.addChangeListener(this);
    }

    public void stateChanged(ChangeEvent ce) {
        icon = (Icon) spinner.getValue();
        setIcon(icon);
    }

    public JSpinner getSpinner() {
        return spinner;
    }

    public Icon getIcon() {
        return icon;
    }
}