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A simple node-relationship editor
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/** 
 * Copyright (C) 2010  Jorge J. Gomez-Sanz 
 * 
 * This file is part of the INGENME tool. INGENME is an open source meta-editor
 * which produces customized editors for user-defined modeling languages
 *
 * This program 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 version 3 of the License
 *
 * This program 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 this program.  If not, see 
 **/

package ingenias.generator.browser;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.*;

import org.jgraph.graph.*;

import ingenias.editor.IDEState;
import ingenias.editor.ModelJGraph;
import ingenias.editor.TypedVector;
import ingenias.editor.entities.*;
import ingenias.exception.*;
import ingenias.exception.NotFound;

public class GraphEntityImp extends AttributedElementImp implements GraphEntity{

	private IDEState ids;
	private Browser browser;

	public org.jgraph.graph.DefaultGraphCell getDgc() {
		return dgc;
	}

	public void setDgc(org.jgraph.graph.DefaultGraphCell dgc) {
		this.dgc = dgc;
	}

	private ingenias.editor.entities.Entity ent;
	private ModelJGraph graph;
	private org.jgraph.graph.DefaultGraphCell dgc;

	GraphEntityImp(ingenias.editor.entities.Entity ent,  org.jgraph.graph.DefaultGraphCell dgc,
			ModelJGraph graph, IDEState ids) throws NullEntity{
		super(ent,graph,ids);
		if (ent==null) throw new ingenias.exception.NullEntity();
		this.ent=ent;
		this.graph=graph;
		this.dgc=dgc;
		this.ids=ids;
		if (graph==null){
			throw new RuntimeException("Graph is null in entity "+ent+ " when creating a GraphEntityImp");
		}
		if (ids==null)
			throw new RuntimeException("The ids parameter cannot be null");
		browser=new BrowserImp(ids);
	}

	GraphEntityImp(ingenias.editor.entities.Entity ent,
			ModelJGraph graph, IDEState ids) throws NullEntity{
		super(ent,graph,ids);
		if (ent==null) throw new ingenias.exception.NullEntity();
		this.ent=ent;
		this.graph=graph;
		dgc=this.getCell(graph);
		this.ids=ids;
		if (graph==null){
			throw new RuntimeException("Graph is null in entity "+ent+ " when creating a GraphEntityImp");
		}
		if (ids==null)
			throw new RuntimeException("The ids parameter cannot be null");
		this.browser=new BrowserImp(ids);
	}


	private Vector getCells(org.jgraph.JGraph graph){		
		List roots=new Vector(((DefaultGraphModel)graph.getModel()).getRoots());
		Vector v=new Vector();

		boolean found=false;
		int k=0;
		Vector dgcs=new Vector();
		org.jgraph.graph.DefaultGraphCell dgc=null;

		while (k getRelationshipsFromAGraph(ingenias.editor.ModelJGraph graph){
		HashSet v=new HashSet();
		Enumeration dgcs=this.getCells(graph).elements();
		while (dgcs.hasMoreElements()){

			DefaultGraphCell dgc=(DefaultGraphCell)dgcs.nextElement();

			if (dgc!=null && dgc.getChildren()!=null){
				Iterator ports=dgc.getChildren().iterator();
				while (ports.hasNext()){
					Object port=ports.next();
					Iterator it=graph.getModel().edges(port);

					while (it.hasNext()){
						org.jgraph.graph.Edge current=
							(org.jgraph.graph.Edge)it.next();
						DefaultGraphCell extr=this.getExtreme(current);
						ingenias.editor.entities.NAryEdgeEntity nary=
							(ingenias.editor.entities.NAryEdgeEntity)extr.getUserObject();
						v.add(new GraphRelationshipImp(nary,graph,ids));
					}


				}
			}
		}
		return v;


	}

	public Vector getAllRelationships(){
		HashSet result=new HashSet();
		Graph[] g=null;

		g = browser.getGraphs();

		for (int k=0;k(result);
	}

	public Vector getAllRelationships(String relType){
		HashSet result=new HashSet();
		Graph[] g=null;

		g = browser.getGraphs();

		for (int k=0;k rel=this.getRelationshipsFromAGraph(((GraphImp)g[k]).getGraph());
			for (GraphRelationship gr:rel){
				if (gr.getType().equalsIgnoreCase(relType))
					result.add(gr);
			}
		}
		return new Vector(result);
	}



	public GraphRelationship[] getRelationships(){	

		Vector v=new Vector();

		Iterator ports=dgc.getChildren().iterator();
		while (ports.hasNext()){
			Object port=ports.next();
			Iterator it=graph.getModel().edges(port);

			while (it.hasNext()){

				org.jgraph.graph.Edge current=
					(org.jgraph.graph.Edge)it.next();
				DefaultGraphCell extr=this.getExtreme(current);

				ingenias.editor.entities.NAryEdgeEntity nary=
					(ingenias.editor.entities.NAryEdgeEntity)extr.getUserObject();
				v.add(nary);
			}

		}

		GraphRelationship[] result=new GraphRelationship[v.size()];
		for (int k=0;k