code: //==============================================================================
  //	
  //	Copyright (c) 2002-
  //	Authors:
  //	* Andrew Hinton <ug60axh@cs.bham.ac.uk> (University of Birmingham)
  //	* Dave Parker <david.parker@comlab.ox.ac.uk> (University of Oxford, formerly 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 userinterface.properties.computation;
  
  import java.io.*;
  import javax.swing.*;
  
  import userinterface.properties.*;
  import userinterface.util.*;
  import prism.*;
  import parser.ast.*;
  
  public class LoadPropertiesThread extends Thread
  {
  	private GUIMultiProperties parent;
  	private ModulesFile mf;
  	private Prism pri;
  	private File file;
  	private PropertiesFile props = null;
  	private boolean isInsert = false;
  	private Exception ex;
  	
  	/** Creates a new instance of LoadPropertiesThread */
  	public LoadPropertiesThread(GUIMultiProperties parent, ModulesFile mf, File file)
  	{
  	   this(parent, mf, file, false);
  	}
  	
  	public LoadPropertiesThread(GUIMultiProperties parent, ModulesFile mf, File file, boolean isInsert)
  	{
  		this.parent = parent;
  		this.mf = mf;
  		this.file = file;
  		this.pri = parent.getPrism();
  		this.isInsert = isInsert; 
  	}
  	
  	public void run()
  	{
  		try
  		{
  			//notify interface of start of computation
  			SwingUtilities.invokeAndWait(new Runnable() { public void run() {
  				parent.startProgress();
  				parent.notifyEventListeners(new GUIComputationEvent(GUIComputationEvent.COMPUTATION_START, parent));
  				parent.setTaskBarText("Loading properties...");
  			}});
  			
  			// do parsing
  			try {
  				props = pri.parsePropertiesFile(mf, file, false);
  			}
  			//If there was a problem with the loading, notify the interface.
  			catch (FileNotFoundException e) {
  				SwingUtilities.invokeAndWait(new Runnable() { public void run() {
  					parent.stopProgress(); 
  					parent.notifyEventListeners(new GUIComputationEvent(GUIComputationEvent.COMPUTATION_ERROR, parent));
  					parent.setTaskBarText("Loading properties... error.");
  					parent.error("Could not open file \"" + file + "\"");
  				}});
  				return;
  			}
  			catch (PrismException e) {
  				ex = e;
  				SwingUtilities.invokeAndWait(new Runnable() { public void run() {
  					parent.stopProgress(); 
  					parent.notifyEventListeners(new GUIComputationEvent(GUIComputationEvent.COMPUTATION_ERROR, parent));
  					parent.setTaskBarText("Loading properties... error.");
  					parent.error(ex.getMessage());
  				}});
  				return;
  			}
  			
  			//If we get here, the load has been successful, notify the interface and tell the handler.
  			SwingUtilities.invokeAndWait(new Runnable() { public void run() {
  				parent.stopProgress(); 
  				parent.setTaskBarText("Loading properties... done.");
  				parent.notifyEventListeners(new GUIComputationEvent(GUIComputationEvent.COMPUTATION_DONE, parent));
  				if(isInsert)
  					parent.propertyInsertSuccessful(props);
  				else
  					parent.propertyLoadSuccessful(props, file);
  				//System.out.println("In invokeAndWait after propertyLoadSuccessful ");
  			}});
  		}
  		// catch and ignore any thread exceptions
  		catch (java.lang.InterruptedException e) {}
  		catch (java.lang.reflect.InvocationTargetException e) {}
  	}
  }
  