/*
* 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.commands;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.gmf.runtime.common.core.command.CommandResult;
import org.eclipse.gmf.runtime.emf.type.core.commands.EditElementCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.ReorientRelationshipRequest;
import edu.toronto.cs.se.mmint.mid.relationship.MappingReference;
import edu.toronto.cs.se.mmint.mid.relationship.ModelElementEndpointReference;
import edu.toronto.cs.se.mmint.mid.relationship.ModelElementReference;
import edu.toronto.cs.se.mmint.mid.relationship.diagram.edit.policies.MIDBaseItemSemanticEditPolicy;
/**
* @generated
*/
public class ModelElementEndpointReference2ReorientCommand extends EditElementCommand {
/**
* @generated
*/
private final int reorientDirection;
/**
* @generated
*/
private final EObject oldEnd;
/**
* @generated
*/
private final EObject newEnd;
/**
* @generated
*/
public ModelElementEndpointReference2ReorientCommand(ReorientRelationshipRequest request) {
super(request.getLabel(), request.getRelationship(), request);
reorientDirection = request.getDirection();
oldEnd = request.getOldRelationshipEnd();
newEnd = request.getNewRelationshipEnd();
}
/**
* @generated
*/
public boolean canExecute() {
if (false == getElementToEdit() instanceof ModelElementEndpointReference) {
return false;
}
if (reorientDirection == ReorientRelationshipRequest.REORIENT_SOURCE) {
return canReorientSource();
}
if (reorientDirection == ReorientRelationshipRequest.REORIENT_TARGET) {
return canReorientTarget();
}
return false;
}
/**
* @generated
*/
protected boolean canReorientSource() {
if (!(oldEnd instanceof MappingReference && newEnd instanceof MappingReference)) {
return false;
}
ModelElementReference target = getLink().getModelElemRef();
return MIDBaseItemSemanticEditPolicy.getLinkConstraints().canExistModelElementEndpointReference_4005(getLink(),
getNewSource(), target);
}
/**
* @generated
*/
protected boolean canReorientTarget() {
if (!(oldEnd instanceof ModelElementReference && newEnd instanceof ModelElementReference)) {
return false;
}
if (!(getLink().eContainer() instanceof MappingReference)) {
return false;
}
MappingReference source = (MappingReference) getLink().eContainer();
return MIDBaseItemSemanticEditPolicy.getLinkConstraints().canExistModelElementEndpointReference_4005(getLink(),
source, getNewTarget());
}
/**
* @generated
*/
protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
if (!canExecute()) {
throw new ExecutionException("Invalid arguments in reorient link command"); //$NON-NLS-1$
}
if (reorientDirection == ReorientRelationshipRequest.REORIENT_SOURCE) {
return reorientSource();
}
if (reorientDirection == ReorientRelationshipRequest.REORIENT_TARGET) {
return reorientTarget();
}
throw new IllegalStateException();
}
/**
* @generated
*/
protected CommandResult reorientSource() throws ExecutionException {
getOldSource().getModelElemEndpointRefs().remove(getLink());
getNewSource().getModelElemEndpointRefs().add(getLink());
return CommandResult.newOKCommandResult(getLink());
}
/**
* @generated
*/
protected CommandResult reorientTarget() throws ExecutionException {
getLink().setModelElemRef(getNewTarget());
return CommandResult.newOKCommandResult(getLink());
}
/**
* @generated
*/
protected ModelElementEndpointReference getLink() {
return (ModelElementEndpointReference) getElementToEdit();
}
/**
* @generated
*/
protected MappingReference getOldSource() {
return (MappingReference) oldEnd;
}
/**
* @generated
*/
protected MappingReference getNewSource() {
return (MappingReference) newEnd;
}
/**
* @generated
*/
protected ModelElementReference getOldTarget() {
return (ModelElementReference) oldEnd;
}
/**
* @generated
*/
protected ModelElementReference getNewTarget() {
return (ModelElementReference) newEnd;
}
}