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/** 
 * Copyright (C) 2010  Jorge J. Gomez-Sanz sobre código original de Rubén Fuentes
 * 
 * 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.editor.persistence;
import java.lang.reflect.*;

import javax.swing.SwingUtilities;
import javax.swing.tree.*;
import org.apache.xerces.parsers.DOMParser;
import org.xml.sax.InputSource;
import java.awt.Color;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.geom.Point2D;
import java.io.*;
import javax.swing.tree.DefaultMutableTreeNode;
import java.util.*;

import javax.xml.parsers.*;
import org.jgraph.JGraph;
import org.jgraph.graph.*;
import org.w3c.dom.*;

import ingenias.editor.entities.*;
import ingenias.editor.entities.Entity;
import ingenias.exception.*;
import ingenias.editor.cell.*;
import ingenias.editor.*;

/**
 *  Description of the Class
 *
 *@author     developer
 *@created    7 de agosto de 2003
 */
abstract public class GraphLoadImp2Abs
implements GraphLoad {

	/**
	 *  Constructor for the GraphLoad object
	 */
	public GraphLoadImp2Abs() {}

	/**
	 *  Description of the Method
	 *
	 *@param  om        Description of Parameter
	 *@param  rm        Description of Parameter
	 *@param  graph     Description of Parameter
	 *@param  node      Description of Parameter
	 *@param  nodeView  Description of Parameter
	 *@return           Description of the Returned Value
	 */
	private ModelJGraph fromGXL(ObjectManager om, RelationshipManager rm,
			final ModelJGraph graph, org.w3c.dom.Node node, org.w3c.dom.Node nodeView) {

		try {

			// Get Graph's Child Nodes (the cells)
			NodeList list = node.getChildNodes();
			// Get Graph's Child Nodes (the views)
			NodeList listView = nodeView.getChildNodes();
			// ConnectionSet for the Insert method
			final ConnectionSet cs = new ConnectionSet();
			// Hashtable for the ID lookup (ID to Vertex)
			Hashtable ids = new Hashtable();
			// Hashtable for Attributes (Vertex to Map)
			final Hashtable attributes = new Hashtable();
			Vector edges = new Vector();
			Vector edgesAttr = new Vector();
			Node parentshipnode=null;
			Node entityconstraintsnode=null;
			// Loop Children
			for (int i = 0; i < list.getLength(); i++) {
				// The order is the same in both trees.
				node = list.item(i);
				nodeView = listView.item(i);
				// If Valid Node
				if (node.getAttributes() != null && node.getNodeName() != null) {
					// Fetch Supertype
					String supertype = (String) node.getNodeName();
					// Create Vertex
					if (supertype.equals("node")) {
						String id = node.getAttributes().getNamedItem("id").getNodeValue();
						String type = node.getAttributes().getNamedItem("type").
								getNodeValue();
						final DefaultGraphCell vertex = GXLVertex(id, type, graph, om, rm);
						if ( (vertex != null) && ! (vertex instanceof NAryEdge)) {
							// Add ID, Vertex pair to Hashtable
							if (node.getAttributes().getNamedItem("nid") != null) {
								ids.put(node.getAttributes().getNamedItem("nid").getNodeValue(),
										vertex);
							}
							else {
								ids.put(node.getAttributes().getNamedItem("id").getNodeValue(),
										vertex);
								// Add Attributes
							}
							Map vertexAttr = GXLCellView(graph, vertex, ids, nodeView);				
							attributes.put(vertex, vertexAttr);
							// Add Vertex to new Cells
							try {
								graph.getModel().insert(new Object[]{vertex}, attributes,cs, null, null);

								/*Runnable insertionAction=new Runnable(){
									public void run(){
										graph.getModel().insert(new Object[]{vertex}, attributes,cs, null, null);
									}
								};
								SwingUtilities.invokeLater(insertionAction);*/
								Runnable insertionAction=new Runnable(){
									public void run(){
										graph.getGraphLayoutCache().setVisible(vertex, true);
									}
								};								
								SwingUtilities.invokeLater(insertionAction);
								//graph.getGraphLayoutCache().setVisible(vertex, true);
								//	((ModelJGraph)graph).getDefaultSize((Entity)vertex.getUserObject()); // to check if the entity is allowed in the diagram


							} catch (Exception ex){
								System.err.println("Error creating node "+id+" of type "+type+" in graph "+graph.getID()+" of type "+graph.getClass().getName()+" \n"+attributes+"\n");
								ex.printStackTrace();

							}
							// Log.getInstance().logSYS("loaded "+vertex.getUserObject());
						} else {
							if (vertex != null && (vertex instanceof NAryEdge)) {
								edges.add(vertex);
								Vector idscon = getConnectedEntities(node);
								Map vertexAttr = GXLCellView(graph, vertex, ids, nodeView);
								edgesAttr.add(vertexAttr);
								edgesAttr.add(idscon);

							}
						}
					} else 
						if (supertype.equals("parentship"))
							parentshipnode=node;
						else 
							if (supertype.equals("entityconstraints"))
								entityconstraintsnode=node;
				}
			}

			// restores parentship relationship
			if (parentshipnode!=null)
				graph.getListenerContainer().fromXML(ids,parentshipnode);
			if (entityconstraintsnode!=null)
				graph.getListenerContainer().constraintsFromXML(ids, entityconstraintsnode);


			Enumeration enumeration = edges.elements();
			Enumeration enumeration1 = edgesAttr.elements();
			while (enumeration.hasMoreElements()) {
				try {
					NAryEdge ne = (NAryEdge) enumeration.nextElement();
					NAryEdgeEntity ent = (NAryEdgeEntity) ne.getUserObject();
					Map eas = (Map) enumeration1.nextElement();
					Vector idscon = ( (Vector) enumeration1.nextElement());
					GraphCell gcs[] = null;
					Hashtable[] attsEdges=null;
					if (idscon.size() > 0) {
						String[] idEnts = ent.getIds();
						gcs = new GraphCell[idscon.size()/2];
						attsEdges=new Hashtable[idscon.size()/2];

						for (int k = 0; k < idscon.size()/2; k=k+1) {
							String id = idscon.elementAt(2*k).toString();
							gcs[k] = (GraphCell) ids.get(id);

							//graph.getDefaultSize((Entity)((DefaultGraphCell)gcs[k]).getUserObject()); // to check if the entity is allowed in the diagram
							attsEdges[k]=(Hashtable)idscon.elementAt(2*k+1);
							//this.getGraphCell(graph,id);

						}
					}
					else {
						String[] idEnts = ent.getIds();
						gcs = new GraphCell[idEnts.length];
						for (int k = 0; k < idEnts.length; k++) {
							String id = idEnts[k];
							gcs[k] = this.getGraphCell(graph, id);
							graph.getDefaultSize((Entity)((DefaultGraphCell)gcs[k]).getUserObject()); // to check if the entity is allowed in the diagram
						}
					}

					this.connect(graph, gcs, ne, eas,attsEdges);
				} catch (InvalidEntity ie){
					ie.printStackTrace();
				}
			}

			return graph;
		}
		catch (Exception e) {
			// Display error message on stderr
			e.printStackTrace();
			return null;
		}
	}

	// Convert an CellView represented by a GXL DOM node in a Map.
	// cell is the GraphCell represented by the returned CellView.
	// ids has a mapping from id to vertex.
	/**
	 *  Description of the Method
	 *
	 *@param  graph  Description of Parameter
	 *@param  cell   Description of Parameter
	 *@param  ids    Description of Parameter
	 *@param  node   Description of Parameter
	 *@return        Description of the Returned Value
	 */
	private Map GXLCellView(JGraph graph, GraphCell cell, Map ids, org.w3c.dom.Node node) {

		// Fetch Map attributes.
		Hashtable attrMap = getMap(node);
		// The id attribute is not appliable.
		attrMap.remove("id");

		attrMap.remove("icon");
		// Fetch extralabels

		if (attrMap.containsKey("points")) {
			List points = GraphConstants.getPoints(attrMap);
			ArrayList result = new ArrayList();
			// The ports are removed. They are converted to String's.
			// Ports are added employing cell.
			PortView sourceView = (PortView) graph.getGraphLayoutCache().getMapping( (GraphCell) ( (
					Port) ( (DefaultEdge) cell).getSource()), false);
			PortView targetView = (PortView) graph.getGraphLayoutCache().getMapping( (GraphCell) ( (
					Port) ( (DefaultEdge) cell).getTarget()), false);
			// Add source.
			result.add(sourceView);
			// Other points are represented as Point's.
			Iterator it = points.iterator();
			while (it.hasNext()) {
				Object point = it.next();
				if (point instanceof Point) {
					result.add(point);
				}
			}
			// Add target.
			result.add(targetView);
			GraphConstants.setPoints(attrMap, result);
		}

		if (attrMap.containsKey("lineBegin")) {
			// int values are saved as Strings.
			String lineBegin = (String) attrMap.get("lineBegin");
			GraphConstants.setLineBegin(attrMap, Integer.parseInt(lineBegin));
		}

		if (attrMap.containsKey("lineEnd")) {
			// int values are saved as Strings.
			String lineEnd = (String) attrMap.get("lineEnd");
			GraphConstants.setLineEnd(attrMap, Integer.parseInt(lineEnd));
		}

		return attrMap;
	}

	// Convert a vertex represented by a GXL DOM node in a DefaultGraphCell.
	// ids contains the already processed vertex ids.
	/**
	 *  Description of the Method
	 *
	 *@param  id     Description of Parameter
	 *@param  type   Description of Parameter
	 *@param  graph  Description of Parameter
	 *@param  om     Description of Parameter
	 *@param  rm     Description of Parameter
	 *@return        Description of the Returned Value
	 */
	abstract protected  DefaultGraphCell GXLVertex(String id, String type, ModelJGraph graph,
			ObjectManager om, RelationshipManager rm);

	// Convert an edge represented by a GXL DOM node in a DefaultEdge.
	// ids has a mapping from id to vertex.
	/**
	 *  Description of the Method
	 *
	 *@param  ids   Description of Parameter
	 *@param  node  Description of Parameter
	 *@return       Description of the Returned Value
	 */
	/*private DefaultEdge GXLEdge(Map ids, org.w3c.dom.Node node) {

		DefaultEdge edge = new DefaultEdge();

		// Fetch Map attributes.
		Map attrMap = getMap(node);

		// Create Edge with label
		String label = (String) attrMap.get("id");
		// Fetch type
		String type = (String) attrMap.get("type");


		// id and type are not valid JGraph attributes.
		attrMap.remove("id");
		attrMap.remove("type");
		return edge;
	}*/

	/**
	 *  Description of the Method
	 *
	 *@param  graph     Description of Parameter
	 *@param  selected  Description of Parameter
	 *@param  nEdge     Description of Parameter
	 *@param  eas       Description of Parameter
	 * @param attsEdges 
	 */
	private void connect(final ModelJGraph graph, GraphCell[] selected, final NAryEdge nEdge,
			Map eas, Hashtable[] attsEdges) throws NotFound{
		// N-ary relationship.
		if (nEdge != null) {
			// Role assignations to classes are obtained from NAryEdgeEntity in NAryEdge.
			// NAryEdgeEntity has a list of object ids that have to be in selected.
			// assignations is a Vector of Vectors of Strings where Strings represents roles.
			NAryEdgeEntity nEdgeObject = (NAryEdgeEntity) nEdge.getUserObject();
			// ids of objects connected with nEdge.

			// Selected objects are reduced to those connected with nEdge.
			GraphCell[] newSelected = this.getEntitiesAlreadyInsertedInRelationshipAndUpdateDGCIds(selected,nEdgeObject);
			//			String[] ids = nEdgeObject.getIds(); // ids change with previous method
			// Role assignation to objects is obtained.
			String[] selectedAssignation = new String[newSelected.length];
			for (int i = 0; i < newSelected.length; i++) {
				selectedAssignation[i] = nEdgeObject.getRole(""+newSelected[i].hashCode());
				// Auxiliary edges that will be inserted in the Model.
			}


			try {
				final DefaultEdge[] auxiliaryEdges = nEdge.connectionsEdges(newSelected,
						selectedAssignation);
				if (auxiliaryEdges.length!=newSelected.length){
					ingenias.editor.entities.NAryEdgeEntity ne = (NAryEdgeEntity)
							nEdge.getUserObject();
					String[] tids = ne.getIds();
					String result = "";
					for (int k = 0; k < selected.length; k++) {
						result = result + ((DefaultGraphCell)selected[k]).getUserObject() + ",";
					}
					Log.getInstance().logSYS("WARNING Relationship removed:Relationship " +
							ne.getId() + " of type " + ne.getType() +
							" has not been saved properly among objects " +
							result + " in graph " + graph.getID());
					nEdge.connectionsEdges(newSelected,
							selectedAssignation);


				} else {
					// this block duplicates the labels. Needs to be Revised
					//**************************************************************
					final Hashtable edgesAttributes = new Hashtable();
					for (int i = 0; i < newSelected.length; i++) {
						RoleEntity re = nEdgeObject.getRoleEntity(""+newSelected[i].hashCode());
						auxiliaryEdges[i].setUserObject(re);
						/*Object[] labels=(Object[]) attsEdges[i].get("extraLabels");
						Object[] poslabels=(Object[]) attsEdges[i].get("extraLabelPositions");
						if (labels !=null && poslabels!=null){
							Map attr = auxiliaryEdges[0].getAttributes();
							GraphConstants.setExtraLabels(attr, labels);
							Point2D.Double[] points=new Point2D.Double[poslabels.length];
							for (int j=0;j= 0 ||
								selectedAssignation[i].endsWith("T")) {
							// Add a Line End Attribute
							GraphConstants.setLineEnd(attr, GraphConstants.ARROW_SIMPLE);
							// Associate the Edge with its Attributes
						}
						GraphConstants.setDisconnectable(attr,false);
						GraphConstants.setLineWidth(attr, 1);
						GraphConstants.setEndSize(attr, 7);
						GraphConstants.setBendable(attr,false);								
						RoleEntity re=((RoleEntity)auxiliaryEdges[i].getUserObject());
						
						if (re.getAttributeToShow()==-1){
							GraphConstants.setLabelEnabled(attr,false);		
							GraphConstants.setLabelPosition(attr,
									new Point2D.Double(GraphConstants.PERMILLE/2, -20));							
						} else {
							GraphConstants.setLabelEnabled(attr,true);							 						
							GraphConstants.setLabelPosition(attr,
									new Point2D.Double(GraphConstants.PERMILLE/2, -20));

							//GraphConstants.setBackground(am,new Color(212,219,206));						

							/*attributes.put(graph.getGraphLayoutCache().getMapping(defaultEdge,false),am);
						graph.getGraphLayoutCache().edit(attributes); // hack to prevent duplicating attributes
						attributes=new Hashtable();								
						am=new AttributeMap();*/
							GraphConstants.setOpaque(attr,true);		
							GraphConstants.setBackground(attr,new Color(212,219,206));
							GraphConstants.setBorderColor(attr, Color.GRAY);
							GraphConstants.setLabelAlongEdge(attr,true);
						
							

						}

						edgesAttributes.put(auxiliaryEdges[i], attr);

					}

					//////////			-----------------------------------//////////
					// Insert the Edge and its Attributes. The order matters.
					if (auxiliaryEdges.length >= 2) {
						graph.getModel().insert(new Object[] {nEdge},attributes,
								null, null, null);
						graph.getModel().insert( (Object[]) auxiliaryEdges, edgesAttributes,cs, null,
								null);						
						//graph.getGraphLayoutCache().setVisible(nEdge, true);

						/*Runnable insertionAction=new Runnable(){
							public void run(){
								graph.getModel().insert(new Object[] {nEdge},attributes,
										null, null, null);
								graph.getModel().insert( (Object[]) auxiliaryEdges, edgesAttributes,cs, null,
										null);
								graph.getGraphLayoutCache().setVisible(nEdge, true);
							}
						};
						SwingUtilities.invokeLater(insertionAction);*/
						Runnable  insertionAction=new Runnable(){
							public void run(){
								graph.getGraphLayoutCache().setVisible(nEdge, true);
							}
						};
						SwingUtilities.invokeLater(insertionAction);

					}
					else {
						ingenias.editor.entities.NAryEdgeEntity ne = (NAryEdgeEntity)
								nEdge.getUserObject();
						String[] tids = ne.getIds();
						String result = "";
						for (int k = 0; k < tids.length; k++) {
							result = result + tids[k] + ",";
						}
						Log.getInstance().logSYS("WARNING Relationship removed:Relationship " +
								ne.getId() + " of type " + ne.getType() +
								" has not been saved properly among objects " +
								result + " in graph " + graph.getID());
					}
				}

			}catch (WrongParameters wp){
				Log.getInstance().logSYS(
						"WARNING!!! Cannot produce edges for relationship " +
								nEdgeObject.getId() + " of type " + nEdgeObject.getType());
				wp.printStackTrace();

			}

		}
	}

	/**
	 *  Gets the modelPath attribute of the GraphLoad object
	 *
	 *@param  n   Description of Parameter
	 *@param  gm  Description of Parameter
	 * @param modelIds 
	 *@return     The modelPath value
	 */
	private Object[] getModelPath(org.w3c.dom.Node n, GraphManager gm) {
		Object[] opath = null;
		Vector path = new Vector();
		NodeList packages = n.getChildNodes();
		for (int k = 0; k < packages.getLength(); k++) {
			org.w3c.dom.Node pack = packages.item(k);
			if (pack.getNodeName().equalsIgnoreCase("path")) {
				NodeList packs = pack.getChildNodes();
				for (int j = 0; j < packs.getLength(); j++) {
					org.w3c.dom.Node npack = packs.item(j);
					if (npack.getNodeName().equalsIgnoreCase("package")) {
						String id = npack.getAttributes().getNamedItem("id").getNodeValue().
								toString();
						path.add(id);
					}
				}
				for (int j = 1; j < path.size(); j++) {
					opath = new Object[j];
					for (int l = 0; l < j; l++) {
						opath[l] = path.elementAt(l);
					}

					gm.addPackage(opath, path.elementAt(j).toString());
				}
			}
		}
		return path.toArray();
	}

	/**
	 *  Gets the graphCell attribute of the GraphLoad object
	 *
	 *@param  mj  Description of Parameter
	 *@param  id  Description of Parameter
	 *@return     The graphCell value
	 */
	private GraphCell getGraphCell(ModelJGraph mj, String id) {
		for (int k = 0; k < mj.getModel().getRootCount(); k++) {
			DefaultGraphCell dgc = (DefaultGraphCell) mj.getModel().getRootAt(k);
			ingenias.editor.entities.Entity ent = (ingenias.editor.entities.Entity)
					dgc.getUserObject();
			if (ent.getId().equalsIgnoreCase(id)) {
				return dgc;
			}
		}

		return null;
	}

	/**
	 *  Gets the connectedEntities attribute of the GraphLoad object
	 *
	 *@param  n  Description of Parameter
	 *@return    The connectedEntities value
	 */
	private Vector getConnectedEntities(org.w3c.dom.Node n) {
		Vector result = new Vector();
		NodeList nl = n.getChildNodes();
		for (int k = 0; k < nl.getLength(); k++) {
			org.w3c.dom.Node current = nl.item(k);
			if (current.getNodeName().equalsIgnoreCase("connected")) {
				String id = current.getAttributes().getNamedItem("id").getNodeValue();
				result.add(id);
				Hashtable hashAttr =new Hashtable();
				retrieveNodeGenericAttributes(current, hashAttr);
				result.add(hashAttr);
			}
		}
		//System.err.println("connected to "+n.getAttributes().getNamedItem("id").getNodeValue()+" "+ result.size());
		return result;
	}

	/**
	 *  Description of the Method
	 *
	 *@param  ed                             Description of Parameter
	 *@param  om                             Description of Parameter
	 *@param  rm                             Description of Parameter
	 *@param  gm                             Description of Parameter
	 *@param  doc                            Description of Parameter
	 *@exception  ClassNotFoundException     Description of Exception
	 *@exception  IllegalAccessException     Description of Exception
	 *@exception  InstantiationException     Description of Exception
	 *@exception  NoSuchMethodException      Description of Exception
	 *@exception  InvocationTargetException  Description of Exception
	 */
	public void restoreModels(IDEState ids,GUIResources resources,
			Document doc) throws CannotLoadDiagram {
		// For compatibility and in case a future different RM is needed
		RelationshipManager rm = new RelationshipManager();
		NodeList models = doc.getElementsByTagName("models").item(0).getChildNodes();
		boolean allrecovered=true;
		String failureMessage="";

		float initialValue=resources.getProgressBarValue();
		float increment=(100-initialValue)/models.getLength();
		for (int k = 0; k < models.getLength(); k++) {
			org.w3c.dom.Node model = models.item(k);			
			resources.setCurrentProgress((int)(initialValue+increment*k));
			String id="";
			String type="";
			try {
				if (model.getNodeName().equalsIgnoreCase("model")) {
					id = model.getAttributes().getNamedItem("id").getNodeValue().
							toString();
					Log.getInstance().logSYS("Loading model "+id);
					type = model.getAttributes().getNamedItem("type").getNodeValue().
							toString();
					this.restoreModel(ids,resources,rm, model);
				}
			} catch (Exception e){
				allrecovered=false;
				failureMessage=failureMessage+"\n Error loading model "+ id+
						" of type "+type+". Original error message was \n "+e.getMessage();
				e.printStackTrace();
			}
		}
		if (!allrecovered)
			throw new CannotLoadDiagram(failureMessage);


	}

	private void restoreModel(IDEState ids,GUIResources resources,RelationshipManager rm,
			org.w3c.dom.Node model) throws ClassNotFoundException,
			IllegalAccessException, InstantiationException, NoSuchMethodException,
			InvocationTargetException{
		String id = model.getAttributes().getNamedItem("id").getNodeValue().
				toString();
		String type = model.getAttributes().getNamedItem("type").getNodeValue().
				toString();


		Object[] path = this.getModelPath(model, ids.gm);

		org.w3c.dom.Node graph = null;
		org.w3c.dom.Node layout = null;
		NodeList children = model.getChildNodes();
		ModelDataEntity mde = null;

		for (int j = 0; j < children.getLength(); j++) {

			org.w3c.dom.Node current = children.item(j);
			if (current.getNodeName().equalsIgnoreCase("object")) {
				mde = (ModelDataEntity) PersistenceManager.getOL().restoreObject(ids.om,ids.gm, current);
			}
			if (current.getNodeName().equalsIgnoreCase("gxl")) {
				NodeList gxls = current.getChildNodes();
				for (int l = 0; l < gxls.getLength(); l++) {
					org.w3c.dom.Node currentgxl = gxls.item(l);
					if (currentgxl.getNodeName().equalsIgnoreCase("graph")) {
						graph = currentgxl;
					}
					if (currentgxl.getNodeName().equalsIgnoreCase("layout")) {
						layout = currentgxl;
					}
				}
			}
		}
		ModelJGraph mjg = null;

		int indmarquee=type.indexOf("ModelJGraph");
		int inStartTypeTag=type.lastIndexOf(".");
		type="ingenias.editor.models"+type.substring(inStartTypeTag,indmarquee)+"ModelJGraph";

		if (mde != null) {
			indmarquee=type.indexOf("ModelJGraph");
			inStartTypeTag=type.lastIndexOf(".");
			String actionFactoryName="ingenias.editor.actions.diagram"+type.substring(inStartTypeTag,indmarquee)+"ActionsFactory";

			Class[] consparFactory = {GUIResources.class, IDEState.class};		        
			Object[] valparFactory = {resources,ids};
			Class[] consparModel = {mde.getClass(), String.class,ObjectManager.class, Model.class,BasicMarqueeHandler.class, Preferences.class};      
			Object[] valparModel = {mde,id,ids.om,new Model(ids),new BasicMarqueeHandler(), ids.prefs};		

			Constructor cons= Class.forName(type).getConstructor(consparModel);
			mjg = (ModelJGraph) cons.newInstance(valparModel);

			Constructor consmarquee = Class.forName(actionFactoryName).getConstructor(consparFactory);
			DiagramMenuEntriesActionsFactory actionFactory=(DiagramMenuEntriesActionsFactory) consmarquee.newInstance(valparFactory);
			MarqueeHandler marquee=new MarqueeHandler(mjg,resources,ids,actionFactory);
			mjg.setMarqueeHandler(marquee);

		}
		else {
			Class[] conspar = {
					ids.editor.getClass()};
			Object[] valpar = {
					ids.editor};
			Constructor cons = Class.forName(type).getConstructor(conspar);
			mjg = (ModelJGraph) cons.newInstance(valpar);
		}
		mjg.disableAllListeners();

		//mjg.setEditor(ids.editor);
		//   mjg.setOM(ids.om);
		//mjg.setId(id);
		this.fromGXL(ids.om,rm, mjg, graph, layout);		
		ids.gm.addModel(path, id, mjg);

	}


	/**
	 *  Description of the Method
	 *
	 *@param  node                   Description of Parameter
	 *@return                        Description of the Returned Value
	 *@exception  WrongTypedDOMNode  Description of Exception
	 */
	private Object[] GXL2Array(org.w3c.dom.Node node) throws WrongTypedDOMNode {
		if (node.getNodeName().equals("array")) {
			try {
				Vector children = new Vector();

				// Obtain children
				NodeList values = node.getChildNodes();
				for (int k = 0; k < values.getLength(); k++) {
					try {
						children.add(GXL2Object(values.item(k)));
					}
					catch (WrongTypedDOMNode e) {
						// It is not a valid child.
					}
				}
				// Construct the Array
				return children.toArray();
			}
			catch (Exception e) {
				e.printStackTrace();
				throw new WrongTypedDOMNode(node.toString() +
						"is a malformed representation of an Object[].");
			}
		}
		else {
			new WrongTypedDOMNode(node.toString() +
					"does not represent an Object[]").printStackTrace();
			throw new WrongTypedDOMNode(node.toString() +
					"does not represent an Object[]");
		}
	}

	/**
	 *  Description of the Method
	 *
	 *@param  node                   Description of Parameter
	 *@return                        Description of the Returned Value
	 *@exception  WrongTypedDOMNode  Description of Exception
	 */
	private List GXL2List(org.w3c.dom.Node node) throws WrongTypedDOMNode {
		if (node.getNodeName().equals("list")) {
			try {
				ArrayList children = new ArrayList();

				// Obtain children
				NodeList values = node.getChildNodes();
				int index = 0;
				for (int k = 0; k < values.getLength(); k++) {
					try {
						Object child = GXL2Object(values.item(k));
						children.add(index++, child);
					}
					catch (WrongTypedDOMNode e) {
						// It is not a valid child.
					}
				}
				// Construct the List
				return ( (List) children);
			}
			catch (Exception e) {
				throw new WrongTypedDOMNode(node.toString() +
						"is a malformed representation of an List.");
			}
		}
		else {
			throw new WrongTypedDOMNode(node.toString() +
					"does not represent an List");
		}
	}

	/**
	 *  Description of the Method
	 *
	 *@param  node                   Description of Parameter
	 *@return                        Description of the Returned Value
	 *@exception  WrongTypedDOMNode  Description of Exception
	 */
	private Point2D.Double GXL2Point(org.w3c.dom.Node node) throws WrongTypedDOMNode {
		if (node.getNodeName().equals("point")) {
			try {
				// Obtain attributes
				double x = (new Double(node.getAttributes().getNamedItem("x").
						getNodeValue())).doubleValue();
				double y = (new Double(node.getAttributes().getNamedItem("y").
						getNodeValue())).doubleValue();
				// Construct the Point
				return new Point2D.Double(x, y);
			}
			catch (Exception e) {
				throw new WrongTypedDOMNode(node.toString() +
						"is a malformed representation of a java.awt.Point.");
			}
		}
		else {
			throw new WrongTypedDOMNode(node.toString() +
					"does not represent a java.awt.Point.");
		}
	}

	/**
	 *  Description of the Method
	 *
	 *@param  node                   Description of Parameter
	 *@return                        Description of the Returned Value
	 *@exception  WrongTypedDOMNode  Description of Exception
	 */
	private Rectangle GXL2Rectangle(org.w3c.dom.Node node) throws WrongTypedDOMNode {
		if (node.getNodeName().equals("rectangle")) {
			try {
				// Obtain attributes
				int x = (new Integer(node.getAttributes().getNamedItem("x").
						getNodeValue())).intValue();
				int y = (new Integer(node.getAttributes().getNamedItem("y").
						getNodeValue())).intValue();
				int width = (new Integer(node.getAttributes().getNamedItem("width").
						getNodeValue())).intValue();
				int height = (new Integer(node.getAttributes().getNamedItem("height").
						getNodeValue())).intValue();
				// Construct the Rectangle
				return new Rectangle(x, y, width, height);
			}
			catch (Exception e) {
				throw new WrongTypedDOMNode(node.toString() +
						"is a malformed representation of a java.awt.Rectangle.");
			}
		}
		else {
			throw new WrongTypedDOMNode(node.toString() +
					"does not represent a java.awt.Rectangle.");
		}
	}



	/**
	 *  Description of the Method
	 *
	 *@param  node                   Description of Parameter
	 *@return                        Description of the Returned Value
	 *@exception  WrongTypedDOMNode  Description of Exception
	 */
	private Object GXL2Object(org.w3c.dom.Node node) throws WrongTypedDOMNode {
		Object object = null;
		if (node.getNodeName().equals("point")) {
			object = GXL2Point(node);
		}
		else if (node.getNodeName().equals("rectangle")) {
			object = GXL2Rectangle(node);
		}
		else if (node.getNodeName().equals("list")) {
			object = GXL2List(node);
		}
		else if (node.getNodeName().equals("array")) {
			object = GXL2Array(node);
		}
		else if (node.getNodeName().equals("string")) {
			object = GXL2String(node);
		}
		else if (node.getNodeName().equals("view")) {
			object = GXL2String(node);
		}
		else if (node.getNodeName().equals("attr")) {
			NodeList values = node.getChildNodes();

			for (int k = 0; k < values.getLength(); k++) {
				try {
					Object objectAttr = GXL2Object(values.item(k));
					if (object == null) {
						object = objectAttr;
					}
				}
				catch (WrongTypedDOMNode e) {
				}
			}

			if (object == null) {
				throw new WrongTypedDOMNode(node.toString() +
						"does not represent any valid Object.");
			}
			//		if (values.item(k).getNodeName().equals("string")) {
			//		Node labelNode = values.item(k).getFirstChild();
			//		if (labelNode != null)
			//		object = (String) labelNode.getNodeValue();
			//		}
		}
		else {
			throw new WrongTypedDOMNode(node.toString() +
					"does not represent any valid Object.");
		}

		return object;
	}

	private Object GXL2String(org.w3c.dom.Node node) {
		org.w3c.dom.Node labelNode = node.getFirstChild();
		if (labelNode != null) {
			return (String) labelNode.getNodeValue();
		}
		return null;
	}

	private DefaultGraphCell[]
			getEntitiesAlreadyInsertedInRelationshipAndUpdateDGCIds(Object[] selected,
					ingenias.editor.entities.NAryEdgeEntity nEdgeObject) {
		ingenias.editor.entities.NAryEdgeEntity ne = nEdgeObject;
		String[] ids = nEdgeObject.getIds();
		Vector newselectedv=new Vector();

		int i = 0;
		for (int k = 0; k < ids.length; k++) {			
			for (int j = 0; j < selected.length; j++) {
				Entity userObject = (ingenias.editor.entities.Entity) ( (DefaultGraphCell) selected[j]).getUserObject();			
				try {
					if (userObject != null &&
							userObject.equals(nEdgeObject.getEntity(ids[k]))) {
						nEdgeObject.updateCell(ids[k], "" + selected[j].hashCode());
						// Old id's are prefixed "old" to avoid collision among old id's and new ones
						newselectedv.add((DefaultGraphCell) selected[j]);
						i++;
					}
				}
				catch (NotFound nf) {
				}
				catch (AlreadyExists ae) {
					Log.getInstance().logSYS("WARNING!!!! Relationship" +
							nEdgeObject.getId() + " of type " +
							nEdgeObject.getType() +
							" already contains an id " +
							selected[j].hashCode());

				}
			}
		}
		ids = nEdgeObject.getIds();

		// Number of ids in the relationship can be less than initial number
		if (ids.length != i) {
			throw new RuntimeException(
					"INTERNAL ERROR!!! Length of ids connected in " +
							nEdgeObject.getId() + " of type " + nEdgeObject.getType() +
							" a relationship does not match selected default graph cell number. I had " +
							ids.length + " elements to find and I found " + i);
		}
		DefaultGraphCell[] newSelected = new DefaultGraphCell[ids.length];
		for (int k=0;k




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