List Model Controls - The Definitive Guide to Java Swing - page 463

renderer.setText(theText);
renderer.setFont(theFont);
return renderer;
}
}
This renderer merely customizes the renderer component returned by the
DefaultListCellRenderer . The customization is based on the data model value being passed
in as an array to the value argument of the getListCellRendererComponent() method.
Listing 13-7 shows the test class. This demonstration program reuses the DiamondIcon
created in Chapter 4. Most of the code is for initialization of the data model.
Listing 13-7. Rendering Complex List Cells Sample
import javax.swing.*;
import java.awt.*;
public class ComplexRenderingSample {
public static void main(String args[]) {
Runnable runner = new Runnable() {
public void run() {
Object elements[][] = {
{new Font("Helvetica", Font.PLAIN, 20), Color.RED,
new DiamondIcon(Color.BLUE), "Help"},
{new Font("TimesRoman", Font.BOLD, 14), Color.BLUE,
new DiamondIcon(Color.GREEN), "Me"},
{new Font("Courier", Font.ITALIC, 18), Color.GREEN,
new DiamondIcon(Color.BLACK), "I'm"},
{new Font("Helvetica", Font.BOLD | Font.ITALIC, 12), Color.GRAY,
new DiamondIcon(Color.MAGENTA), "Trapped"},
{new Font("TimesRoman", Font.PLAIN, 32), Color.PINK,
new DiamondIcon(Color.YELLOW), "Inside"},
{new Font("Courier", Font.BOLD, 16), Color.YELLOW,
new DiamondIcon(Color.RED), "This"},
{new Font("Helvetica", Font.ITALIC, 8), Color.DARK_GRAY,
new DiamondIcon(Color.PINK), "Computer"}
};
JFrame frame = new JFrame("Complex Renderer");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JList jlist = new JList(elements);
ListCellRenderer renderer = new ComplexCellRenderer();
jlist.setCellRenderer(renderer);
JScrollPane scrollPane = new JScrollPane(jlist);
frame.add(scrollPane, BorderLayout.CENTER);