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/*****************************************************************************
* Copyright (c) 2009 CEA LIST.
*
*
* 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:
* Patrick Tessier (CEA LIST) Patrick.tessier@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.diagram.clazz.custom.policies.itemsemantic;
import org.eclipse.gef.commands.Command;
import org.eclipse.gef.commands.UnexecutableCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.CreateRelationshipRequest;
import org.eclipse.papyrus.diagram.clazz.edit.policies.DependencyBranchSemanticEditPolicy;
import org.eclipse.papyrus.diagram.clazz.providers.UMLElementTypes;
/**
* this class is used to forbid the creation of a dependency branch on a dependency branch.
*
*/
public class CustomDependencyBranchSemanticEditPolicy extends DependencyBranchSemanticEditPolicy {
@Override
protected Command getStartCreateRelationshipCommand(CreateRelationshipRequest req) {
if(UMLElementTypes.Dependency_4018 == req.getElementType()) {
return UnexecutableCommand.INSTANCE;
}
return super.getStartCreateRelationshipCommand(req);
}
}
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