/*
** Luxor - XML User Interface Language (XUL) Toolkit
** 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 luxor.swing.tree;

import java.awt.Component;
import java.io.*;
import java.util.*;
import javax.swing.*;
import javax.swing.tree.*;
import org.jdom.*;
import org.jdom.input.*;
import luxor.core.*;
import luxor.core.widget.*;
import luxor.spi.*;
import luxor.status.*;
import luxor.swing.*;
import luxor.*;

public class TreePeer extends AbstractComponent
{
   static Logger T = Logger.getLogger( TreePeer.class );
   private JScrollPane _comp;

   private JTree _tree;

   public TreePeer( TreeDef def )
   {
      super( def );

      TreeModel model = null;

      // fix: add InputStream/DataSource getDataSource() to XulNode
      //  don't replicate the same code all over the place

      String datasource = def.getAttribute( Xul.Attribute.DATASOURCE );
      if( datasource == null )
      {
         Xul.error( "datasource attribute required for tree" );
      }
      else
      {
         InputStream inStream = XulManager.getXulManager().getResourceAsStream( datasource );
         if( inStream == null )
         {
            Xul.error( "tree datasource '" + datasource + "' not found" );
         }
         else
         {
            try
            {
               SAXBuilder builder = new SAXBuilder();
               Document doc = builder.build( inStream );
               model = new XmlTreeModel( doc );
            }
            catch( JDOMException jex )
            {
               Xul.error( "failed to parse xml document '" + datasource + "': " + jex.toString() );
            }
         }
      }

      _tree = new JTree( ( TreeModel ) model );

      _tree.setCellRenderer( new XmlTreeNodeRenderer() );
      _tree.setEditable( false );
      _tree.putClientProperty( "JTree.lineStyle", "Angled" );
      _tree.setRootVisible( true );
      _tree.setShowsRootHandles( true );

      _comp = new JScrollPane( _tree );
   }

   public JComponent getJComponent()
   {
      return _comp;
   }

   public void resolveReferences( NComponentResolver resolver ) { }

   public boolean useMinHeight()
   {
      return false;
   }

   public boolean useMinWidth()
   {
      return false;
   }
}