// File: SGraphNode.java
// Classes: SGraphNode
// Author: Kedar Patankar

package edu.neu.ccs.demeter.tools.apstudio.graphedit;

import java.util.Enumeration;
import javax.swing.tree.DefaultMutableTreeNode;

/* Purpose : Responsible for presenting the strategy graph information */

public class SGraphNode implements Behdata
{
	private String _name;
	private EditorMenus _menu;
	private int _count;
	public SGraphNode(String name,EditorMenus menu)
	{
		_name =name;
		_menu= menu;
		_count =0;
	}

	public String toString(){return _name;}
	public void setName(String name){_name = name;}

	public void setMenu(){_menu.setMenuforSGraph();}

	public String getDescription(){return "graph details not available";}
	public String nextEdgeName(){return "SEdge_"+ ++_count;}

	public String getString(DefaultMutableTreeNode node)
	{
		// If the graph is empty return null as it is not savable
		if(node.getChildCount()<1)
			return null;
		if( ! (node.getUserObject() instanceof SGraphNode) ) // should never happen
			return null;

		// If one of the strategy edges is not valid return null
		Enumeration enum = node.children();
		String stratGraphString=new String();
		while(enum.hasMoreElements())
		{
			DefaultMutableTreeNode edgeNode = (DefaultMutableTreeNode)enum.nextElement();
			SEdgeNode edge = (SEdgeNode)edgeNode.getUserObject();

			int status = edge.get_status();
			if(status!=SEdgeNode.VALID)
				return null;

			String stratDefinition = edge.getDescription();

			stratGraphString +=stratDefinition;
			stratGraphString +="\n";
		}
		return "{\n"+stratGraphString+"}\n";
	}

}