content: package com.japisoft.framework.preferences;
  
  import java.awt.Component;
  
  import javax.swing.Icon;
  import javax.swing.ImageIcon;
  import javax.swing.JLabel;
  import javax.swing.JTree;
  import javax.swing.tree.DefaultTreeCellRenderer;
  
  /**
  This program is available under two licenses : 
  
  1. For non commercial usage : 
  
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  
  2. For commercial usage :
  
  You need to get a commercial license for source usage at : 
  
  http://www.editix.com/buy.html
  
  Copyright (c) 2018 Alexandre Brillant - JAPISOFT SARL - http://www.japisoft.com
  
  @author Alexandre Brillant - abrillant@japisoft.com
  @author JAPISOFT SARL - http://www.japisoft.com
  
  */
  public class TreeGroup extends JTree {
  	
  	public TreeGroup() {
  		setCellRenderer( new CustomTreeCellRendererComponent() );
  	}
  
  	Icon i1 = new ImageIcon( ClassLoader.getSystemResource( "images/navigate_right.png" ) );
  	Icon i2 = new ImageIcon( ClassLoader.getSystemResource( "images/navigate_right2.png" ) );
  	Icon i3 = new ImageIcon( ClassLoader.getSystemResource( "images/pawn_glass_blue.png" ) );
  	
  	class CustomTreeCellRendererComponent extends DefaultTreeCellRenderer {
  		public Component getTreeCellRendererComponent(
  				JTree tree, 
  				Object value, 
  				boolean selected, 
  				boolean expanded, 
  				boolean leaf, 
  				int row, 
  				boolean hasFocus) {
  			Component c = super.getTreeCellRendererComponent(
  					tree,
  					value,
  					selected,
  					expanded,
  					leaf,
  					row,
  					hasFocus );
  			if ( c instanceof JLabel ) {
  				if ( !leaf )
  					( ( JLabel )c ).setIcon( i3 );
  				else {
  					if ( selected )
  						( ( JLabel )c ).setIcon( i2 );
  					else
  						( ( JLabel )c ).setIcon( i1 );
  				}
  			}
  			return c;
  		}
  	}
  	
  	
  
  }
  