/*
** 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.widget;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import luxor.spi.*;
import luxor.status.*;

public class HistoryComboBox extends JComboBox
{
   static Logger T = Logger.getLogger( HistoryComboBox.class );

   /**
    *  note: we cannot use a shared ListModel because ListModel doesn't keep
    *  track of the combo boxes individual selection
    */
   private HistoryComboBoxHelper _helper;

   public HistoryComboBox( HistoryModel model )
   {
      super();

      setEditable( true );

      _helper = new HistoryComboBoxHelper( this, model );

      // add auto-completion
      new HistoryComboBoxAgent( this );
   }

   public Object getSelectedItem()
   {
      Object obj = super.getSelectedItem();
      return obj != null ? obj : "";
   }

   public String getText()
   {
      JTextField editor = ( JTextField ) getEditor().getEditorComponent();

      String text = editor.getText();
      return text != null ? text : "";
   }

   public void populate( String text )
   {
      if( text == null )
         text = "";

      text = text.trim();
      if( text.equals( "" ) )
      {
         _helper.setSelectedItemBackup( text );
         setSelectedItem( text );
         return;
      }

      // add entry to history
      _helper.add( text );

      // repopulate combo box with updated history
      _helper.populate();
      // select new entry
      _helper.setSelectedItemBackup( text );
      setSelectedItem( text );
   }
}