/**
* 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.edithelper;
import org.eclipse.emf.common.util.EList;
import org.eclipse.gmf.runtime.common.core.command.CompositeCommand;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.emf.type.core.commands.DestroyElementCommand;
import org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelper;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyDependentsRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
import org.yakindu.sct.model.sgraph.Transition;
import org.yakindu.sct.model.sgraph.Vertex;
import org.yakindu.sct.ui.editor.commands.CreateTransitionCommand;
/**
* Base Edit Helper class for all Vertices
*
* @author andreas muelder
*
*/
public class VertexEditHelper extends AbstractEditHelper {
/**
* Returns a custom {@link CreateTransitionCommand} that sets the target
* transition
*/
@Override
protected ICommand getCreateRelationshipCommand(
CreateRelationshipRequest req) {
return new CreateTransitionCommand(req);
}
@Override
protected ICommand getDestroyDependentsCommand(DestroyDependentsRequest req) {
Vertex elementToDestroy = (Vertex) req.getElementToDestroy();
EList<Transition> incomingTransitions = elementToDestroy
.getIncomingTransitions();
if (incomingTransitions.size() != 0) {
CompositeCommand compoundCommand = new CompositeCommand(
"Delete vertex");
for (Transition transition : incomingTransitions) {
DestroyElementCommand destroyCommand = new DestroyElementCommand(
new DestroyElementRequest(transition, false));
compoundCommand.add(destroyCommand);
}
return compoundCommand;
}
return super.getDestroyDependentsCommand(req);
}
}