imgiconlistcellrenderer.java

一款即时通讯软件

package edu.ou.kmi.buddyspace.utils;

/*
 * ImgIconListCellRenderer.java
 *
 * Project: BuddySpace
 * (C) Copyright Knowledge Media Institute 2002
 *
 *
 * Created on 31 January 2003, 8:58
 */

import javax.swing.*;
import java.awt.*;

/**
 * <code>ImgIconListCellRenderer</code> provides rendering of cell containing
 * ImgIcons with description texts.
 *
 * @author  Jiri Komzak, Knowledge Media Institute, Open University, United Kingdom
 */
public class ImgIconListCellRenderer extends JLabel implements ListCellRenderer {
    
    public ImgIconListCellRenderer() {
        setOpaque(true);
        setHorizontalAlignment(LEFT);
        setVerticalAlignment(CENTER);
    }

    public Component getListCellRendererComponent(JList list,
                                                  Object value,
                                                  int index,
                                                  boolean isSelected,
                                                  boolean cellHasFocus) {
        if (isSelected) {
            setBackground(list.getSelectionBackground());
            setForeground(list.getSelectionForeground());
        } else {
            setBackground(list.getBackground());
            setForeground(list.getForeground());
        }

        ImageIcon icon = (ImageIcon) value;
        if (icon != null) {
            setText(icon.getDescription());
            setToolTipText(icon.getDescription());
            setIcon(icon);
        }
        return this;
    }
}