/*
* Copyright (c) 2012-2016 Marsha Chechik, Alessio Di Sandro, Michalis Famelis,
* Rick Salay.
* 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:
* Alessio Di Sandro - Implementation.
*/
package edu.toronto.cs.se.mmint.mid.relationship.diagram.edit.policies;
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.gmf.runtime.emf.type.core.requests.DestroyElementRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientReferenceRelationshipRequest;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientRelationshipRequest;
import edu.toronto.cs.se.mmint.mid.relationship.diagram.edit.commands.BinaryMappingReferenceChangeModelElementReferenceCommand;
import edu.toronto.cs.se.mmint.mid.relationship.diagram.edit.commands.BinaryMappingReferenceNewBinaryMappingCommand;
import edu.toronto.cs.se.mmint.mid.relationship.diagram.edit.commands.MappingReferenceAddModelElementEndpointReferenceCommand;
import edu.toronto.cs.se.mmint.mid.relationship.diagram.edit.commands.MappingReferenceChangeModelElementEndpointReferenceCommand;
import edu.toronto.cs.se.mmint.mid.relationship.diagram.edit.parts.BinaryMappingReferenceEditPart;
import edu.toronto.cs.se.mmint.mid.relationship.diagram.edit.parts.ModelElementEndpointReferenceEditPart;
import edu.toronto.cs.se.mmint.mid.relationship.diagram.providers.MIDElementTypes;
/**
* The semantic edit policy for model element references.
*
* @author Alessio Di Sandro
*
*/
public class ModelElementReferenceSuperSemanticEditPolicy extends ModelElementReference3ItemSemanticEditPolicy {
@Override
protected Command getDestroyElementCommand(DestroyElementRequest req) {
return UnexecutableCommand.INSTANCE;
}
/**
* Gets the command to start creating a new link originating from a model
* element reference.
*
* @param req
* The request.
* @return The executable command.
*/
@Override
protected Command getStartCreateRelationshipCommand(CreateRelationshipRequest req) {
if (MIDElementTypes.BinaryMappingReference_4003 == req.getElementType()) {
return getGEFWrapper(new BinaryMappingReferenceNewBinaryMappingCommand(req,
req.getSource(), req.getTarget()));
}
return null;
}
/**
* Gets the command to complete the creation of a new link originating from
* a model element reference.
*
* @param req
* The request.
* @return The executable command.
*/
@Override
protected Command getCompleteCreateRelationshipCommand(CreateRelationshipRequest req) {
if (MIDElementTypes.ModelElementEndpointReference_4002 == req
.getElementType()) {
return getGEFWrapper(new MappingReferenceAddModelElementEndpointReferenceCommand(
req, req.getSource(), req.getTarget()));
}
if (MIDElementTypes.BinaryMappingReference_4003 == req.getElementType()) {
return getGEFWrapper(new BinaryMappingReferenceNewBinaryMappingCommand(req,
req.getSource(), req.getTarget()));
}
return null;
}
/**
* Gets the command to reorient a link (implemented with an EClass)
* originating from a model element reference.
*
* @param req
* The request.
* @return The executable command.
*/
@Override
protected Command getReorientRelationshipCommand(ReorientRelationshipRequest req) {
switch (getVisualID(req)) {
case ModelElementEndpointReferenceEditPart.VISUAL_ID:
return getGEFWrapper(new MappingReferenceChangeModelElementEndpointReferenceCommand(
req));
case BinaryMappingReferenceEditPart.VISUAL_ID:
return getGEFWrapper(new BinaryMappingReferenceChangeModelElementReferenceCommand(req));
}
return UnexecutableCommand.INSTANCE;
}
@Override
protected Command getReorientReferenceRelationshipCommand(ReorientReferenceRelationshipRequest req) {
return UnexecutableCommand.INSTANCE;
}
}