/*******************************************************************************
* Copyright (c) 2010-2015 Henshin developers. All rights reserved.
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* TU Berlin, University of Luxembourg, SES S.A.
*******************************************************************************/
package de.tub.tfs.henshin.tggeditor.commands.create;
import org.eclipse.emf.henshin.model.Graph;
import org.eclipse.emf.henshin.model.HenshinFactory;
import org.eclipse.emf.henshin.model.Module;
import org.eclipse.gef.commands.Command;
import de.tub.tfs.henshin.tgg.TGG;
import de.tub.tfs.henshin.tgg.TggFactory;
import de.tub.tfs.henshin.tgg.TripleGraph;
/**
* The class CreateGraphCommand creates a tgg graph.
*/
public class CreateGraphCommand extends Command {
/** The transformation system. */
private TGG module;
/** The triple graph. */
private TripleGraph graph;
/** The name. */
private String name;
/**
* Instantiates a new creates the graph command.
*
* @param transSys the transformation system
* @param name the name
*/
public CreateGraphCommand(TGG transSys, String name) {
this.module = transSys;
this.name = name;
this.graph = TggFactory.eINSTANCE.createTripleGraph();
}
/* (non-Javadoc)
* @see org.eclipse.gef.commands.Command#execute()
*/
@Override
public void execute() {
graph.setName(name);
module.getInstances().add(graph);
}
/* (non-Javadoc)
* @see org.eclipse.gef.commands.Command#undo()
*/
@Override
public void undo() {
module.getInstances().remove(graph);
}
/* (non-Javadoc)
* @see org.eclipse.gef.commands.Command#canExecute()
*/
@Override
public boolean canExecute() {
return name != null && module != null;
}
/* (non-Javadoc)
* @see org.eclipse.gef.commands.Command#canUndo()
*/
@Override
public boolean canUndo() {
return graph != null && module != null;
}
}