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

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

import edu.neu.ccs.demeter.Ident;
import java.awt.Point;

public class ActionCreateConstEdge extends Action
{
	private UEdge _edge;
	private UVertex _s,_d;
	private Point _midPoint;

	public ActionCreateConstEdge(Editor editor,UEdge n,UVertex s,UVertex d,Point midPoint)
	{
		super(editor);
		_edge=n;
		_s=s;_d=d;
		_midPoint=midPoint;
	}

	
	public String name() { return "Create Construction Edge"; }

	public void doIt()
	{
		String edgeName = _d.get_vertexname().get_name().toString();

		edgeName = edgeName.toLowerCase();

		// unique(with respect to a perticular source and destination pair) edge name found here
		if(((UConstOrAltVertex)_s).checkThisOut(edgeName)) // so first edge will have destination name in lowercase
		{
			int count =0;
			for(boolean found = true;found;) // All later edges have destination name followed by edge number 
			{
				count++;
				String trialName = edgeName + "_"+count;
				found = ((UConstOrAltVertex)_s).checkThisOut(trialName);
			}
			edgeName = edgeName + "_"+count;
		}
		
		_edge.set_eid(_editor.curDocument().nextId());
		((UConstEdge)_edge).set_edgename(new UEdgeName(new Ident(edgeName)));
		((UConstEdge)_edge).set_card(new Cardinality(new Lower(new Integer(1)),null));
		_edge.connect(_s,_d);

		String card = new String("1");
		ArcPerspective ap;
		if(_midPoint==null)
			ap= new ArcPerspective(_edge,edgeName,card,_editor.curDocument());
		else
			ap=new  ArcPerspective(_edge,edgeName,card,_editor.curDocument(),_midPoint);

		_editor.showEdgePropertySheet(ap);
		_editor.curDocument().add(ap);
		showDefaultMessage();
		_editor.curDocument().damaged(ap);
		_editor.curDocument().selectItem(ap);
		_editor.menuForsingleSelection();
	}

	public void undoIt() { }

	public void showDefaultMessage(){_editor.setDefaultMessage();}

} /* end class ActionCreateConstEdge */