/*
** Rachel  - Resource Loading Toolkit for Web Start/JNLP
** Copyright (c) 2001, 2002 by Gerald Bauer
**
** This program is free software.
**
** You may redistribute it and/or modify it under the terms of the GNU
** General Public License as published by the Free Software Foundation.
** Version 2 of the license should be included with this distribution in
** the file LICENSE, as well as License.html. If the license is not
** included with this distribution, you may find a copy at the FSF web
** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
**
** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
** REDISTRIBUTION OF THIS SOFTWARE.
**
*/

package demo.common.tree;

import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import org.jdom.*;
import houston.*;

public class XmlTreeModel implements TreeModel
{
   static Logger T = Logger.getLogger( XmlTreeModel.class );

   EventListenerList _listener = new EventListenerList();

   private Element _root;

   public XmlTreeModel( Document doc )
   {
      _root = doc.getRootElement();
   }

   public Object getChild( Object parent, int index )
   {
      Element el = ( Element ) parent;

      List children = el.getChildren();
      return children.get( index );
   }

   public int getChildCount( Object parent )
   {
      Element el = ( Element ) parent;

      List children = el.getChildren();
      return children.size();
   }

   public int getIndexOfChild( Object parent, Object child )
   {
      Element el = ( Element ) parent;

      List children = el.getChildren();
      return children.indexOf( child );
   }

   public Object getRoot()
   {
      return _root;
   }

   public boolean isLeaf( Object parent )
   {
      Element el = ( Element ) parent;

      List children = el.getChildren();
      return children.size() == 0;
   }

   public void addTreeModelListener( TreeModelListener l )
   {
      _listener.add( TreeModelListener.class, l );
   }

   public void removeTreeModelListener( TreeModelListener l )
   {
      _listener.remove( TreeModelListener.class, l );
   }

   public void valueForPathChanged( TreePath path, Object newValue )
   {
      // only needed if you edit/change tree nodes in Jtree itself which we don't do/support
   }

}