Graph Script Code

package ls.graph.ui;

import java.lang.reflect.Constructor;

import ls.util.Utils;
import edu.uci.ics.jung.graph.Graph;
import edu.uci.ics.jung.visualization.FRLayout;
import edu.uci.ics.jung.visualization.Layout;
import edu.uci.ics.jung.visualization.SpringLayout;
import edu.uci.ics.jung.visualization.contrib.CircleLayout;
import edu.uci.ics.jung.visualization.contrib.KKLayout;

public enum LayoutType
{
	CIRCLE(CircleLayout.class, "Circle"),
	SPRING(SpringLayout.class, "Spring"),
	//TREE(TreeLayout.class,"Tree"),
	FR(FRLayout.class,"FR Layout"),
	KK(KKLayout.class,"KK Layout");
	
	
	private Constructor<? extends Layout> constructor = null;
	private String name = null;
	
	LayoutType(Class<? extends Layout> layoutClass, String n)
	{
		try
		{
			constructor = layoutClass.getConstructor(new Class<?>[] {Graph.class});
		}
		catch (Exception exn) { Utils.exn(exn); constructor = null; }
		name = n;
	}
	
	public String getName() { return this.name; }
	
	public Layout createLayout(Graph g)
	{
		try
		{
			if (constructor != null)
				return (Layout)(constructor.newInstance(new Object[] {g}));
			else throw new Exception("Layout constructor is null");
		}
		catch (Exception exn)
		{
			Utils.exn(exn);
		}
		return null;
	}
	
	public String toString() { return this.getName(); }
}