package examples;

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

/**
 * CS401 Example 37b
 * 
 * Demonstrates the use of the Model/View/Controller implementation of the JList
 * component. 
 * 
 * @author PJ Dillon
 */
public class ex37b implements ActionListener, ListSelectionListener
{
	private DefaultListModel from, to;
	private JList fromList, toList;
	private Container c;
	
	public ex37b()
	{
		JFrame window = new JFrame("Example 37b");
		window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		c = window.getContentPane();
		c.setLayout(new FlowLayout());
		
		from = new DefaultListModel();
		from.addElement(new MyColor("Black", Color.black));
		from.addElement(new MyColor("Blue", Color.blue));
		from.addElement(new MyColor("Red", Color.red));
		from.addElement(new MyColor("Orange", Color.orange));
		from.addElement(new MyColor("Green", Color.green));
		from.addElement(new MyColor("Cyan", Color.cyan));
		from.addElement(new MyColor("Gray", Color.gray));
		from.addElement(new MyColor("Magenta", Color.magenta));
		from.addElement(new MyColor("Green", Color.green));
		from.addElement(new MyColor("White", Color.white));
		from.addElement(new MyColor("Yellow", Color.yellow));
		
		fromList = new JList(from);
		fromList.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
		c.add(new JScrollPane(fromList));
		
		JButton select = new JButton("Select >>>");
		select.addActionListener(this);
		c.add(select);
		
		to = new DefaultListModel();
		toList = new JList(to);
		toList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
		toList.addListSelectionListener(this);
		c.add(new JScrollPane(toList));
		
		window.setSize(520, 200);
		window.setVisible(true);
	}
	
	public void actionPerformed(ActionEvent e)
	{
		Object[] values = fromList.getSelectedValues();
		for(Object o : values)
			if(!to.contains(o))
				to.addElement(o);
	}
	
	public void valueChanged(ListSelectionEvent e)
	{
		c.setBackground(((MyColor)to.get(toList.getSelectedIndex())).getColor());
	}
	
	public static void main(String[] args)
	{
		new ex37b();
	}

	private class MyColor
	{
		private Color color;
		private String name;
		
		public MyColor(String n, Color c)
		{
			color = c;
			name = n;
		}
		
		public String toString() {return name;}
		public Color  getColor() {return color;}
	}
}