code: //==============================================================================
  //	
  //	Copyright (c) 2002-
  //	Authors:
  //	* Andrew Hinton <ug60axh@cs.bham.ac.uk> (University of Birmingham)
  //	
  //------------------------------------------------------------------------------
  //	
  //	This file is part of PRISM.
  //	
  //	PRISM 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 2 of the License, or
  //	(at your option) any later version.
  //	
  //	PRISM 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 PRISM; if not, write to the Free Software Foundation,
  //	Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  //	
  //==============================================================================
  
  package settings;
  
  import javax.swing.*;
  import java.awt.*;
  import javax.swing.event.*;
  import java.awt.event.*;
  import javax.swing.border.*;
  import java.util.*;
  
  public class ChoiceEditor implements SettingEditor, ActionListener, FocusListener
  {
  	private Font font = new Font("monospaced", Font.PLAIN, 12);
  	private String[] choices;
  	private JComboBox combo;
  	private JTable lastTable;
  	private boolean modified = false;
  
  	/** Creates a new instance of ChoiceEditor */
  	public ChoiceEditor(String[] choices)
  	{
  		combo = new JComboBox(choices);
  		combo.addActionListener(this);
  		combo.addFocusListener(this);
  		this.choices = choices;
  	}
  
  	public Object getEditorValue() throws SettingException
  	{
  		if (modified) {
  			modified = false;
  			if (combo.getSelectedItem() != null)
  				return combo.getSelectedItem().toString();
  			else
  				return NOT_CHANGED_VALUE;
  		} else
  			return NOT_CHANGED_VALUE;
  	}
  
  	public Component getTableCellEditorComponent(JTable table, Setting owner, Object value, boolean isSelected, int row, int column)
  	{
  
  		if (isSelected) {
  			combo.setForeground(table.getSelectionForeground());
  			combo.setBackground(table.getSelectionBackground());
  		} else {
  			combo.setForeground(table.getForeground());
  			combo.setBackground(table.getBackground());
  		}
  
  		combo.setBorder(new EmptyBorder(0, 0, 0, 0));//UIManager.getBorder("Table.focusCellHighlightBorder") );
  		combo.setFont(font);
  		combo.setFocusable(false);
  
  		if (value instanceof String) {
  			int index = -1;
  			for (int i = 0; i < choices.length; i++) {
  				if (choices[i].equals(value.toString())) {
  					index = i;
  					break;
  				}
  			}
  			combo.setSelectedIndex(index);
  		} else if (value instanceof ArrayList) {
  			ArrayList<?> values = (ArrayList<?>) value;
  			if (values.size() > 0) {
  				//if we have multiple properties selected.
  				String last = null;
  				boolean allSame = true;
  				for (int i = 0; i < values.size(); i++) {
  					if (values.get(i) instanceof String) {
  						String str = (String) values.get(i);
  						if (last != null) {
  							if (!str.equals(last)) {
  								allSame = false;
  								break;
  							}
  							last = str;
  						} else {
  							last = str;
  						}
  					}
  				}
  				if (allSame) {
  
  					int index = -1;
  					for (int i = 0; i < choices.length; i++) {
  						if (choices[i].equals(last)) {
  							index = i;
  							break;
  						}
  					}
  					combo.setSelectedIndex(index);
  				} else {
  					combo.setSelectedIndex(-1);
  
  				}
  
  			}
  		}
  
  		lastTable = table;
  		return combo;
  	}
  
  	public void stopEditing()
  	{
  	}
  
  	public void actionPerformed(ActionEvent e)
  	{
  		modified = true;
  		if (lastTable != null)
  			lastTable.editingStopped(new ChangeEvent(this));
  	}
  
  	public void focusGained(FocusEvent e)
  	{
  	}
  
  	public void focusLost(FocusEvent e)
  	{
  		if (lastTable.getCellEditor() != null)
  			lastTable.removeEditor();
  	}
  
  }
  