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/*****************************************************************************
* Copyright (c) 2015 CEA LIST 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:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.statemachine.custom.helpers.advice;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand;
import org.eclipse.gmf.runtime.emf.type.core.IElementType;
import org.eclipse.gmf.runtime.emf.type.core.edithelper.AbstractEditHelperAdvice;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateElementRequest;
import org.eclipse.papyrus.uml.diagram.statemachine.providers.UMLElementTypes;
import org.eclipse.uml2.uml.State;
public class ConnectionPointReferenceInStateHelperAdvice extends AbstractEditHelperAdvice {
@Override
protected ICommand getBeforeCreateCommand(CreateElementRequest request) {
IElementType type = request.getElementType();
if (type == null || type != UMLElementTypes.ConnectionPointReference_Shape) {
return null;
}
State state = (State) request.getContainer();
if (!state.getRegions().isEmpty() || (state.getSubmachine() == null)) {
return UnexecutableCommand.INSTANCE;
}
return super.getBeforeCreateCommand(request);
}
}
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