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

/**
 * MessageCellRenderer - Class built to handle the implementation of the 
 * renderer for UserName data objects.  This allows the data objects to 
 * be rendered into a list format convenient for making selectios from.
 *
 * @extends JPanel
 *
 * @author Jayme Manning
 * @author Paul Kronenwetter
 * @version
 * $Revision: 1.1 $<BR>
 * $Date: 1998/12/17 17:13:50 $<P>
 *
 * <PRE>
 * $Log: MessageCellRenderer.java,v $
 * Revision 1.1  1998/12/17 17:13:50  cps606
 * First take at a cell renderer for the messages list.
 *
 * </PRE>
 */
public class MessageCellRenderer extends JLabel implements ListCellRenderer
{
	/**
	 * box - JList component that we render to.
	 */
	private JList		box;

	/**
	 * selectedBackground - The color to use for the background of a 
	 * selected cell.
	 */
	private Color 		selectedBackground;

	/**
	 * selectedForeground - The color to use for the foreground of a 
	 * selected cell.
	 */
	private Color 		selectedForeground;
	
	/**
	 * defaultBackground - The color to use for the background of a 
	 * normal cell.
	 */
	private Color 		defaultBackground;

	/**
	 * defaultForeground - The color to use for the foreground of a 
	 * normal cell.
	 */
	private Color 		defaultForeground;

	private JScrollPane	scrollPane;
	private DefaultListModel listModel;

	/**
	 * MessageCellRenderer - Constructor used to setup the data objects 
	 * for our class.
	 *
	 * @param newBox JList to render the cells to.
	 */
	public MessageCellRenderer(JList newBox)
	{
		box = newBox;
		setOpaque(true);

		selectedBackground = Color.blue;
		selectedForeground = Color.white;
		defaultBackground = Color.white;
		defaultForeground = Color.black;
	}

	/**
	 * MessageCellRenderer - Constructor used to setup the data objects 
	 * for our class.
	 *
	 * @param newBox JList to render the cells to.
	 * @param sb1 Color to render the selected background as.
	 * @param sf1 Color to render the selected foreground as.
	 * @param db1 Color to render the default background as.
	 * @param df1 Color to render the default foreground as.
	 */
	public MessageCellRenderer(JList newBox, Color sb1, Color sf1,
		Color db1, Color df1)
	{
		box = newBox;
		setOpaque(true);

		selectedBackground = sb1; 
		selectedForeground = sf1;
		defaultBackground = db1;
		defaultForeground = df1;
	}

	/**
	 * getListCellRendererComponent - Method used to return the 
	 * ListCellRenderer for this list.
	 *
	 * @param listbox The JList to be rendered to.
	 * @param value The object that will be rendered.
	 * @param index Where we are in the list.
	 * @param isSelected Is this object currently selected.
	 * @param cellHasFocus Does this object currently have the focus.
	 *
	 * @return Component - The renderable component.
	 */
	public Component getListCellRendererComponent(JList listbox,
		Object value, int index, boolean isSelected, 
		boolean cellHasFocus)
	{
		JLabel message = (JLabel)value;
		setText(message.getText());
		setForeground(message.getForeground());
		setBackground(message.getBackground());

		if(value == null)
		{
			setText("No Message");
		}
		else if(isSelected)
		{
			setBackground(selectedBackground);
			setForeground(selectedForeground);
		}
		else
		{
			setForeground(message.getForeground());
			setBackground(message.getBackground());
			// setBackground(defaultBackground);
			// setForeground(defaultForeground);
		}

		// System.out.println("User Name: " + getText());
		return this;
	}
}