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 java.awt.event.*;
  import javax.swing.event.*;
  import java.util.*;
  import java.io.*;
  
  import userinterface.GUIPrism;
  
  public class FileEditor implements SettingEditor, ActionListener, FocusListener
  {
  	private JLabel renderer;
  	private JPanel panel;
  	private ImageIcon warningIcon = GUIPrism.getIconFromImage("smallError.png");
  	private JButton button;
  	private JTable lastTable = null;
  	private int tableRow = -1;
  	private int tableCol = -1;
  	private JPanel blank1;
  	private FileSetting lastSetting;
  	private boolean dialogFocus = false;
  	private boolean modified = false;
  
  	public FileEditor()
  	{
  		panel = new JPanel();
  		panel.setLayout(new BorderLayout());
  		renderer = new JLabel();
  		renderer = new javax.swing.JLabel();
  		blank1 = new javax.swing.JPanel();
  		button = new javax.swing.JButton("...");
  		button.setFont(new Font("serif", Font.PLAIN, 7));
  		panel.add(renderer, BorderLayout.CENTER);
  		blank1.setLayout(new FlowLayout(FlowLayout.CENTER, 0, 0));
  		blank1.setPreferredSize(new Dimension(18, 2));
  		button.setPreferredSize(new Dimension(16, 12));
  		blank1.add(button);
  		panel.add(blank1, BorderLayout.EAST);
  		button.addActionListener(this);
  		button.addFocusListener(this);
  	}
  
  	public Object getEditorValue()
  	{
  		if (modified) {
  			modified = false;
  			return new File(renderer.getText());
  		} else
  			return NOT_CHANGED_VALUE;
  	}
  
  	public Component getTableCellEditorComponent(JTable table, Setting setting, Object value, boolean isSelected, int row, int column)
  	{
  		if (isSelected) {
  			renderer.setForeground(table.getSelectionForeground());
  			renderer.setBackground(table.getSelectionBackground());
  			panel.setBackground(table.getSelectionBackground());
  			blank1.setBackground(table.getSelectionBackground());
  			button.setBackground(table.getSelectionBackground());
  		} else {
  			renderer.setForeground(table.getForeground());
  			renderer.setBackground(table.getBackground());
  			panel.setBackground(table.getBackground());
  			blank1.setBackground(table.getBackground());
  			button.setBackground(table.getBackground());
  		}
  
  		panel.setBorder(UIManager.getBorder("Table.focusCellHighlightBorder"));
  
  		if (setting instanceof FileSetting) {
  			lastSetting = (FileSetting) setting;
  			if (!lastSetting.isValidFile()) {
  				renderer.setIcon(warningIcon);
  			} else {
  				renderer.setIcon(null);
  			}
  		}
  		if (value instanceof File) {
  			File file = (File) value;
  			renderer.setText(file.toString());
  			//renderer.setEnabled(isEnabled);
  		} else if (value instanceof ArrayList) {
  			ArrayList<?> values = (ArrayList<?>) value;
  			if (values.size() > 0) {
  				//if we have multiple properties selected.
  				File last = null;
  				boolean allSame = true;
  				for (int i = 0; i < values.size(); i++) {
  					if (values.get(i) instanceof File) {
  						File str = (File) values.get(i);
  						if (last != null) {
  							if (!str.equals(last)) {
  								allSame = false;
  								break;
  							}
  							last = str;
  						} else {
  							last = str;
  						}
  					}
  				}
  				if (allSame) {
  					renderer.setText(last.toString());
  					;
  				} else {
  					renderer.setText("(Different values)");
  					renderer.setFont(new Font("monospaced", Font.ITALIC, 12));
  				}
  			}
  
  			if (setting instanceof FileSetting) {
  				lastSetting = (FileSetting) setting;
  				if (!lastSetting.isValidFile()) {
  					renderer.setIcon(warningIcon);
  				} else {
  					renderer.setIcon(null);
  				}
  			}
  		}
  
  		lastTable = table;
  		tableRow = row;
  		tableCol = column;
  		return panel;
  	}
  
  	public void stopEditing()
  	{
  	}
  
  	public void actionPerformed(ActionEvent e)
  	{
  		dialogFocus = true;
  
  		if (lastSetting == null) {
  			System.out.println("lastSetting null");
  			return;
  		}
  
  		File newFile = lastSetting.getFileSelector().getFile(null, new File(renderer.getText()));
  		if (newFile != null) {
  			renderer.setText(newFile.toString());
  			if (dialogFocus) {
  				dialogFocus = false;
  				if (lastTable != null)
  					lastTable.editingStopped(new ChangeEvent(this));
  			} else //must have lost the focus during editing
  			{
  				if (lastTable != null) {
  					lastTable.setValueAt(getEditorValue(), tableRow, tableCol);
  				}
  			}
  			modified = true;
  		}
  		if (lastTable != null)
  			lastTable.editingStopped(new ChangeEvent(this));
  	}
  
  	public void focusGained(FocusEvent e)
  	{
  	}
  
  	public void focusLost(FocusEvent e)
  	{
  		dialogFocus = false;
  	}
  }
  