package org.andromda.metafacades.emf.uml2;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import org.andromda.metafacades.uml.FrontEndAction;
import org.andromda.metafacades.uml.FrontEndUseCase;
import org.andromda.metafacades.uml.TransitionFacade;
import org.eclipse.uml2.Activity;
import org.eclipse.uml2.CallOperationAction;
import org.eclipse.uml2.Element;
import org.eclipse.uml2.Operation;
import org.eclipse.uml2.Transition;
import org.eclipse.uml2.UseCase;
/**
* MetafacadeLogic implementation for
* org.andromda.metafacades.uml.FrontEndEvent.
*
* @see org.andromda.metafacades.uml.FrontEndEvent
*/
public class FrontEndEventLogicImpl
extends FrontEndEventLogic
{
public FrontEndEventLogicImpl(
final Object metaObject,
final String context)
{
super(metaObject, context);
}
/**
* @see org.andromda.metafacades.uml.FrontEndEvent#isContainedInFrontEndUseCase()
*/
protected boolean handleIsContainedInFrontEndUseCase()
{
// Be careful. Should return true only when it has an owning transition
// contained in frontend usecase
// from UML1.4: return this.getTransition() instanceof FrontEndForward;
// Causes stack overflow...
Element owner = (Element)this.metaObject;
if (!(owner.getOwner() instanceof Transition))
{
return false;
}
while (owner != null)
{
if (owner instanceof UseCase)
{
if (this.shieldedElement(owner) instanceof FrontEndUseCase)
{
return true;
}
}
owner = owner.getOwner();
}
return false;
}
/**
* @see org.andromda.metafacades.uml.FrontEndEvent#getControllerCall()
*/
protected Object handleGetControllerCall()
{
final List operations = this.getControllerCalls();
return operations.isEmpty() ? null : operations.iterator().next();
}
/**
* @see org.andromda.metafacades.uml.FrontEndEvent#getControllerCalls()
*/
public List handleGetControllerCalls()
{
// - get every operation from each CallOperationAction instance.
// - Note: this is the same implementation as CallEvent.getOperationCall()
final Activity activity = (Activity)this.metaObject;
final List operations = new ArrayList();
Collection nodes = activity.getNodes();
for (final Iterator iterator = nodes.iterator(); iterator.hasNext();)
{
final Object nextNode = iterator.next();
if (nextNode instanceof CallOperationAction)
{
final Operation operation = ((CallOperationAction)nextNode).getOperation();
if (operation != null)
{
operations.add(operation);
}
}
}
return operations;
}
/**
* @see org.andromda.metafacades.uml.FrontEndEvent#getAction()
*/
protected Object handleGetAction()
{
FrontEndAction action = null;
TransitionFacade transition = this.getTransition();
if (transition instanceof FrontEndAction)
{
action = (FrontEndAction)transition;
}
return action;
}
}