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JList customization :o)

Posted on 2004-09-05
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Last Modified: 2010-03-31
Hi there,
is it possible to customize a JList?
I'm creating an IM for a client, and for all the contacts that come on, I would like to be added to a JList. How much customization to the JList can I do? Can I change the font (colour, face and size)? Also, can I change the colour of the 'selected' JList component?
Anything on how to customize a JList would be much appreciated.

Thanks in advance!!
-R
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Question by:rubberdi
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by:
CEHJ earned 25 total points
ID: 11983885
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by:sciuriware
sciuriware earned 25 total points
ID: 11983888
Yes, if practised long before you create the JList.
I did not test it myself, and may be there's more than:

               UIManager.put("List.foreground", new ColorUIResource(int red, int green, int blue);
               UIManager.put("List.background", new ColorUIResource(int red, int green, int blue);
               UIManager.put("List.selectionForeground", new ColorUIResource(int red, int green, int blue);
               UIManager.put("List.selectionBackground", new ColorUIResource(int red, int green, int blue);
               UIManager.put("List.font", new Font(.....));

;JOOP!
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by:objects
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ID: 11986468
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LVL 37

Assisted Solution

by:zzynx
zzynx earned 25 total points
ID: 11987646
Creating your own list cell renderer is the way to go.
That's quite easy:

/*
 * MyListCellRenderer.java
 *
 */

import javax.swing.*;
import java.awt.*;
/**
 *
 * @author  zzynx
 */
public class MyListCellRenderer extends JLabel implements ListCellRenderer {
   
    /** Creates a new instance of MyListCellRenderer */
    public MyListCellRenderer() {
        setOpaque(true);
        setFont(new Font("Verdana", Font.BOLD|Font.ITALIC, 12));       // set your specific font
    }
   
    public java.awt.Component getListCellRendererComponent(JList list,
                Object value, int index, boolean isSelected, boolean cellHasFocus) {

        if  (value != null)
                setText(value.toString());
        setBackground(isSelected ?
                      Color.RED : list.getBackground());     // Selected = RED color
        setForeground(isSelected ?
                      list.getSelectionForeground() : list.getForeground());  // You can adapt the foreground color too
        return this;        
    }
}

In your other code:

      yourJList.setCellRenderer( new MyListCellRenderer() );

Remark: sciuriware's suggestions does also work, but then it is for *ALL* list boxes in your application
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Expert Comment

by:armoghan
ID: 11987654
check out an MSN style list made in java
The project is an open source, so you can take help of making a renderer from it
http://jmsn.sourceforge.net/
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Expert Comment

by:sciuriware
ID: 11988414
There is some good reason to have all your components of certain kind look the same.
It's less confusing to the user. That's why SUN createde the UI properties.
;JOOP!
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Author Comment

by:rubberdi
ID: 12045256
ThanQ all
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Expert Comment

by:CEHJ
ID: 12045274
8-)
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Expert Comment

by:objects
ID: 12048879
glad to help :)
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Expert Comment

by:zzynx
ID: 12051710
Thanks
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