?? chainer.java
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import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.border.*;
import javax.accessibility.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class Chainer extends JxFrame
{
//list of chain members
Sender sender; //gets commands
Imager imager; //displays images
FileList fileList; //highlights file names
ColorImage colorImage; //shows colors
RestList restList; //shows rest of list
//--------------------------------------
public Chainer()
{
super("Chain demo");
JPanel jp = new JPanel();
jp.setBorder(new EmptyBorder(5,5,5,5));
getContentPane().add(jp);
jp.setLayout(new GridLayout(1,3));
JPanel left = new JPanel();
jp.add(left);
left.setLayout(new GridLayout(2,1));
//create send panel and image display panel
sender = new Sender();
imager = new Imager();
left.add(imager);
left.add(sender);
//create file list and color panels
JPanel mid = new JPanel();
jp.add(mid);
mid.setBorder(new EmptyBorder(5,5,5,5));
mid.setLayout(new GridLayout(2,1));
fileList = new FileList();
colorImage = new ColorImage();
mid.add(fileList);
mid.add(colorImage);
//put list for rest of commands in right panel
restList = new RestList();
jp.add(restList);
//set up the chain of responsibility
sender.addChain(imager);
imager.addChain(colorImage);
colorImage.addChain(fileList);
fileList.addChain(restList);
//set up visual shape
setSize(new Dimension(500,300));
setVisible(true);
}
//-----------------------------------------
static public void main(String argv[])
{
new Chainer();
}
}
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