/**
* Copyright (c) 2011 committers of YAKINDU and others.
* 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:
* committers of YAKINDU - initial API and implementation
*
*/
package org.yakindu.sct.ui.editor.commands;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.emf.type.core.commands.EditElementCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.yakindu.sct.model.sgraph.SGraphFactory;
import org.yakindu.sct.model.sgraph.Transition;
import org.yakindu.sct.model.sgraph.Vertex;
/**
*
* @author muelder
* @author terfloth
* @author muehlbrandt
*
*/
public class CreateTransitionCommand extends EditElementCommand {
public CreateTransitionCommand(CreateRelationshipRequest request) {
super(request.getLabel(), null, request);
}
@Override
protected CreateRelationshipRequest getRequest() {
return (CreateRelationshipRequest) super.getRequest();
}
@Override
public boolean canExecute() {
EObject source = getRequest().getSource();
EObject target = getRequest().getTarget();
if (source == null && target == null) {
return false;
}
if (source != null && !(source instanceof Vertex))
return false;
if (target != null && !(target instanceof Vertex))
return false;
return true;
}
@Override
protected CommandResult doExecuteWithResult(IProgressMonitor monitor,
IAdaptable info) throws ExecutionException {
Vertex source = (Vertex) getRequest().getSource();
Vertex target = (Vertex) getRequest().getTarget();
if (source != null && target != null) {
Transition transition = SGraphFactory.eINSTANCE.createTransition();
source.getOutgoingTransitions().add(transition);
transition.setSource(source);
transition.setTarget(target);
source.getOutgoingTransitions().add(transition);
target.getIncomingTransitions().add(transition);
((CreateElementRequest) getRequest()).setNewElement(transition);
}
return CommandResult.newOKCommandResult();
}
}