samer@0: /*
samer@0:  *	AgentAdapter.java	
samer@0:  *
samer@0:  *	Copyright (c) 2000, Samer Abdallah, King's College London.
samer@0:  *	All rights reserved.
samer@0:  *
samer@0:  *	This software is provided AS iS and WITHOUT ANY WARRANTY; 
samer@0:  *	without even the implied warranty of MERCHANTABILITY or 
samer@0:  *	FITNESS FOR A PARTICULAR PURPOSE.
samer@0:  */
samer@0: 
samer@0: package samer.core.util;
samer@0: import  samer.core.*;
samer@0: import  java.awt.*;
samer@0: import  java.awt.event.*;
samer@0: 
samer@0: /**
samer@0: 	This converts action events and item state
samer@0: 	events (eg from buttons, menus, or check box
samer@0: 	items) into Agent commands.
samer@0:   */
samer@0: 
samer@0: public class AgentAdapter implements ActionListener, ItemListener
samer@0: {
samer@0: 	private Agent		agent;
samer@0: 
samer@0: 	public AgentAdapter(Agent a) { agent=a; }
samer@0: 
samer@0: 	public Agent getAgent() { return agent; }
samer@0: 	
samer@0: 	public void actionPerformed(ActionEvent e) {
samer@0: 		try {	agent.execute(e.getActionCommand(), new UserEnvironment(Shell.env())); }
samer@0: 		catch (Exception ex) {
samer@0: 			Shell.print("*** error in agent action: "+agent);
samer@0: 			Shell.print("*** exception: "+ex);
samer@0: 			ex.printStackTrace();
samer@0: 		}
samer@0: 	}
samer@0: 
samer@0: 	/**
samer@0: 		This sends provides a boolean argument to the command
samer@0: 		The value comes from the new state of the item.
samer@0: 	  */
samer@0: 
samer@0: 	public void itemStateChanged(ItemEvent e)	
samer@0: 	{
samer@0: 		Object	obj=e.getItem();
samer@0: 		String	cmd;
samer@0: 
samer@0: 		if (obj instanceof String) cmd = (String)obj;
samer@0: 		else if (obj instanceof Component) cmd = ((Component)obj).getName();
samer@0: 		else return;
samer@0: 		if (cmd==null) return;
samer@0: 
samer@0: 		boolean	state = (e.getStateChange()==ItemEvent.SELECTED);
samer@0: 		try { agent.execute(cmd,new UserEnvironment(Shell.env(),state)); }
samer@0: 		catch (Exception ex) {
samer@0: 			Shell.print("*** error in agent action: "+agent);
samer@0: 			Shell.print("*** exception: "+ex);
samer@0: 			ex.printStackTrace();
samer@0: 		}
samer@0: 	}
samer@0: }