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/*****************************************************************************
* Copyright (c) 2013 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:
* Nizar GUEDIDI (CEA LIST) - Initial API and implementation
/*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.component.custom.edit.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.uml.diagram.component.edit.policies.DependencyBranchItemSemanticEditPolicy;
import org.eclipse.papyrus.uml.diagram.component.providers.UMLElementTypes;
/**
* this class is used to forbid the creation of a dependency branch on a dependency branch.
*
*/
public class CustomDependencyBranchSemanticEditPolicy extends DependencyBranchItemSemanticEditPolicy {
@Override
protected Command getStartCreateRelationshipCommand(CreateRelationshipRequest req) {
if (UMLElementTypes.Dependency_BranchEdge == req.getElementType()) {
return UnexecutableCommand.INSTANCE;
}
return super.getStartCreateRelationshipCommand(req);
}
}
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