package org.eclipse.uml2.diagram.csd.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 org.eclipse.uml2.diagram.csd.edit.policies.UMLBaseItemSemanticEditPolicy;
import org.eclipse.uml2.uml.InstanceSpecification;
import org.eclipse.uml2.uml.InstanceValue;
import org.eclipse.uml2.uml.Slot;
import org.eclipse.uml2.uml.UMLFactory;
import org.eclipse.uml2.uml.ValueSpecification;
/**
* @generated
*/
public class AssociationInstanceReorientCommand extends EditElementCommand {
/**
* @generated
*/
private final int reorientDirection;
/**
* @generated
*/
private final EObject oldEnd;
/**
* @generated
*/
private final EObject newEnd;
/**
* @generated
*/
public AssociationInstanceReorientCommand(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 Slot) {
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 InstanceSpecification && newEnd instanceof InstanceSpecification)) {
return false;
}
InstanceSpecification target = getLink().getOwningInstance();
if (!(getLink().eContainer() instanceof InstanceSpecification)) {
return false;
}
InstanceSpecification container = (InstanceSpecification) getLink().eContainer();
return UMLBaseItemSemanticEditPolicy.getLinkConstraints().canExistSlot_4015(container, getLink(), getNewSource(), target);
}
/**
* @generated
*/
protected boolean canReorientTarget() {
if (!(oldEnd instanceof InstanceSpecification && newEnd instanceof InstanceSpecification)) {
return false;
}
InstanceSpecification source = getLink().getOwningInstance();
if (!(getLink().eContainer() instanceof InstanceSpecification)) {
return false;
}
InstanceSpecification container = (InstanceSpecification) getLink().eContainer();
return UMLBaseItemSemanticEditPolicy.getLinkConstraints().canExistSlot_4015(container, 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 {
getLink().setOwningInstance(getNewSource());
return CommandResult.newOKCommandResult(getLink());
}
/**
* @generated NOT
*/
protected CommandResult reorientTarget() throws ExecutionException {
Slot slot = getLink();
InstanceValue valueForOldTarget = null;
for (ValueSpecification next : slot.getValues()) {
if (next instanceof InstanceValue) {
InstanceValue nextValue = (InstanceValue) next;
if (getOldTarget().equals(nextValue.getInstance())) {
valueForOldTarget = nextValue;
break;
}
}
}
if (valueForOldTarget == null) {
//strange, but we will create one
valueForOldTarget = UMLFactory.eINSTANCE.createInstanceValue();
slot.getValues().add(valueForOldTarget);
}
valueForOldTarget.setInstance(getNewTarget());
return CommandResult.newOKCommandResult(getLink());
}
/**
* @generated
*/
protected Slot getLink() {
return (Slot) getElementToEdit();
}
/**
* @generated
*/
protected InstanceSpecification getOldSource() {
return (InstanceSpecification) oldEnd;
}
/**
* @generated
*/
protected InstanceSpecification getNewSource() {
return (InstanceSpecification) newEnd;
}
/**
* @generated
*/
protected InstanceSpecification getOldTarget() {
return (InstanceSpecification) oldEnd;
}
/**
* @generated
*/
protected InstanceSpecification getNewTarget() {
return (InstanceSpecification) newEnd;
}
}