/*
* 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.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.ExtendibleElement;
import edu.toronto.cs.se.mmint.mid.ModelEndpoint;
import edu.toronto.cs.se.mmint.mid.diagram.edit.policies.MIDBaseItemSemanticEditPolicy;
import edu.toronto.cs.se.mmint.mid.relationship.ModelRel;
/**
* @generated
*/
public class ModelEndpointReorientCommand extends EditElementCommand {
/**
* @generated
*/
private final int reorientDirection;
/**
* @generated
*/
private final EObject oldEnd;
/**
* @generated
*/
private final EObject newEnd;
/**
* @generated
*/
public ModelEndpointReorientCommand(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 ModelEndpoint) {
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 ModelRel && newEnd instanceof ModelRel)) {
return false;
}
ExtendibleElement target = getLink().getTarget();
return MIDBaseItemSemanticEditPolicy
.getLinkConstraints()
.canExistModelEndpoint_4002(getLink(), getNewSource(), target);
}
/**
* @generated
*/
protected boolean canReorientTarget() {
if (!(oldEnd instanceof ExtendibleElement && newEnd instanceof ExtendibleElement)) {
return false;
}
if (!(getLink().eContainer() instanceof ModelRel)) {
return false;
}
ModelRel source = (ModelRel) getLink().eContainer();
return MIDBaseItemSemanticEditPolicy
.getLinkConstraints()
.canExistModelEndpoint_4002(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().getModelEndpoints().remove(getLink());
getNewSource().getModelEndpoints().add(getLink());
return CommandResult.newOKCommandResult(getLink());
}
/**
* @generated
*/
protected CommandResult reorientTarget() throws ExecutionException {
getLink().setTarget(getNewTarget());
return CommandResult.newOKCommandResult(getLink());
}
/**
* @generated
*/
protected ModelEndpoint getLink() {
return (ModelEndpoint) getElementToEdit();
}
/**
* @generated
*/
protected ModelRel getOldSource() {
return (ModelRel) oldEnd;
}
/**
* @generated
*/
protected ModelRel getNewSource() {
return (ModelRel) newEnd;
}
/**
* @generated
*/
protected ExtendibleElement getOldTarget() {
return (ExtendibleElement) oldEnd;
}
/**
* @generated
*/
protected ExtendibleElement getNewTarget() {
return (ExtendibleElement) newEnd;
}
}