listimages.java

来自「java技术内幕源代码,配合书籍看有事半功倍的效果」· Java 代码 · 共 69 行

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

/*
<APPLET
    CODE=listimages.class
    WIDTH=300
    HEIGHT=300 >
</APPLET>
*/

public class listimages extends JApplet 
{
    public void init() 
    {
        Container contentPane = getContentPane();

        newModel newmodel = new newModel(); 
        newRenderer newrenderer = new newRenderer();

        JList jlist = new JList(newmodel);
        jlist.setCellRenderer(newrenderer);
        jlist.setVisibleRowCount(6);

        contentPane.add(new JScrollPane(jlist));
    }
}

class newModel extends DefaultListModel 
{
    public newModel() 
    {
        for(int loop_index = 0; loop_index <= 12; loop_index++) {
            addElement(new Object[] {"Item " + loop_index, 
                new ImageIcon("item.jpg")});
        }
    }
}

class newRenderer extends JLabel implements ListCellRenderer 
{
    public newRenderer() 
    {
        setOpaque(true);
    }
    
    public Component getListCellRendererComponent(
        JList jlist, Object obj, int index, boolean isSelected,
        boolean focus) 
    {
        newModel model = (newModel)jlist.getModel();

        setText((String)((Object[])obj)[0]);
        setIcon((Icon)((Object[])obj)[1]);

        if(!isSelected) {
            setBackground(jlist.getBackground());
            setForeground(jlist.getForeground());
        }
        else {
            setBackground(jlist.getSelectionBackground());
            setForeground(jlist.getSelectionForeground());
        }

        return this;
    }
}