package mil.navy.nps.logger;

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

/**
 * This class is designed to neatly draw icons in the scrolling list
 * of pdus in the edit frame. the ListCellRenderer is designed to
 * do the drawing of each and every line in the scrolling list; depending
 * on what type of pdu we have, we can draw a different icon for each.
 * this also gives us some user feedback for the user during drag and
 * drop operations--it looks like we're manipulating a physical object
 * in the icon, rather than a complete abstraction like text.<p>
 *
 * Swiped shamelessly from the javadocs.<p>
 *
 * @author DMcG
 */

class PduCellRenderer extends JLabel implements ListCellRenderer 
{
  final static ImageIcon longIcon = new ImageIcon("images/stop_dn.gif");
  final static ImageIcon shortIcon = new ImageIcon("images/stop_up.gif");

     // This is the only method defined by ListCellRenderer.
     // We just reconfigure the JLabel each time we're called.

  public Component getListCellRendererComponent(
       JList list,
       Object value,            // value to display
       int index,               // cell index
       boolean isSelected,      // is the cell selected
       boolean cellHasFocus)    // the list and the cell have the focus
     {
    //System.out.println("Index is " + index);
         String s = value.toString();
        
       setIcon((s.length() > 10) ? longIcon : shortIcon);
   	   if (isSelected) 
       {
         //System.out.println("drawing selected");
         setBackground(list.getSelectionBackground());
	       setForeground(list.getSelectionForeground());
         //System.out.println(list.getSelectionBackground() + " " + list.getSelectionForeground());
	     }
       else 
       {
         //System.out.println("drawing unselected");
	       setBackground(list.getBackground());
	       setForeground(list.getForeground());
	     }

     setText(s);;
	   setEnabled(list.isEnabled());
	   setFont(list.getFont());
     return this;
   }
 }