package org.eclipse.uml2.diagram.clazz.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.clazz.edit.policies.UMLBaseItemSemanticEditPolicy;
import org.eclipse.uml2.uml.Association;
import org.eclipse.uml2.uml.Property;
import org.eclipse.uml2.uml.Type;
/**
* @generated
*/
public class PropertyLinkReorientCommand extends EditElementCommand {
/**
* @generated
*/
private final int reorientDirection;
/**
* @generated
*/
private final EObject oldEnd;
/**
* @generated
*/
private final EObject newEnd;
/**
* @generated
*/
public PropertyLinkReorientCommand(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 Property) {
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 Association && newEnd instanceof Association)) {
return false;
}
Type target = getLink().getType();
return UMLBaseItemSemanticEditPolicy.getLinkConstraints().canExistProperty_4003(getLink(), getNewSource(), target);
}
/**
* @generated
*/
protected boolean canReorientTarget() {
if (!(oldEnd instanceof Type && newEnd instanceof Type)) {
return false;
}
if (!(getLink().eContainer() instanceof Association)) {
return false;
}
Association source = (Association) getLink().eContainer();
return UMLBaseItemSemanticEditPolicy.getLinkConstraints().canExistProperty_4003(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().getOwnedEnds().remove(getLink());
getNewSource().getOwnedEnds().add(getLink());
return CommandResult.newOKCommandResult(getLink());
}
/**
* @generated
*/
protected CommandResult reorientTarget() throws ExecutionException {
getLink().setType(getNewTarget());
return CommandResult.newOKCommandResult(getLink());
}
/**
* @generated
*/
protected Property getLink() {
return (Property) getElementToEdit();
}
/**
* @generated
*/
protected Association getOldSource() {
return (Association) oldEnd;
}
/**
* @generated
*/
protected Association getNewSource() {
return (Association) newEnd;
}
/**
* @generated
*/
protected Type getOldTarget() {
return (Type) oldEnd;
}
/**
* @generated
*/
protected Type getNewTarget() {
return (Type) newEnd;
}
}