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package net.sf.nakeduml.emf.extraction;
import java.util.List;

import javax.swing.event.ChangeEvent;

import net.sf.nakeduml.metamodel.commonbehaviors.INakedBehavior;
import net.sf.nakeduml.metamodel.commonbehaviors.internal.NakedTimeEventImpl;
import net.sf.nakeduml.metamodel.core.INakedClassifier;
import net.sf.nakeduml.metamodel.core.INakedElement;
import net.sf.nakeduml.metamodel.core.INakedElementOwner;
import net.sf.nakeduml.metamodel.core.INakedTypedElement;
import net.sf.nakeduml.metamodel.core.INakedValueSpecification;
import net.sf.nakeduml.util.TimeUnit;
import nl.klasse.octopus.model.OclUsageType;

import org.eclipse.uml2.uml.Activity;
import org.eclipse.uml2.uml.Behavior;
import org.eclipse.uml2.uml.CallEvent;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.Event;
import org.eclipse.uml2.uml.ReceiveOperationEvent;
import org.eclipse.uml2.uml.ReceiveSignalEvent;
import org.eclipse.uml2.uml.SignalEvent;
import org.eclipse.uml2.uml.TimeEvent;
import org.eclipse.uml2.uml.Trigger;
public abstract class CommonBehaviorExtractor extends AbstractExtractorFromEmf {
	protected List getEnvironment(Element node) {
		Behavior activity = getActivity(node);
		// TODO add variables from containing StructuredNodes
		return getEnvironment(activity);
	}
	protected Activity getActivity(Element node) {
		// MUST return activity
		Element e = node;
		while (!(e instanceof Activity) && e != null) {
			e = e.getOwner();
		}
		return (Activity) e;
	}
	// Precondition: the behaviour must have been populated
	protected INakedElement buildEvent(Behavior behaviour, Trigger t) {
		Event event = t.getEvent();
		if (event instanceof SignalEvent) {
			SignalEvent se = (SignalEvent) event;
			return getNakedPeer(se.getSignal());
		} else if (event instanceof ReceiveSignalEvent) {
			ReceiveSignalEvent se = (ReceiveSignalEvent) event;
			return getNakedPeer(se.getSignal());
		} else if (event instanceof CallEvent) {
			CallEvent ce = (CallEvent) event;
			return getNakedPeer(ce.getOperation());
		} else if (event instanceof ReceiveOperationEvent) {
			ReceiveOperationEvent ce = (ReceiveOperationEvent) event;
			return getNakedPeer(ce.getOperation());
		} else if (event instanceof ChangeEvent) {
		} else if (event instanceof TimeEvent) {
			String id = getId(event) + getId(behaviour);
			INakedBehavior context = (INakedBehavior) getNakedPeer(behaviour);
			NakedTimeEventImpl nakedTimeEvent = (NakedTimeEventImpl) workspace.getModelElement(id);
			if (nakedTimeEvent == null) {
				nakedTimeEvent = new NakedTimeEventImpl();
				TimeEvent emfTimeEvent = ((TimeEvent) event);
				nakedTimeEvent.initialize(id, emfTimeEvent.getName());
				//NB!!! Deviation from UML2 metamodel:
				// We have to make the behaviour the owner to allow for the expression to be implemented correctly
				//Without a behaviour context the expression is contextless and of limited use.
				super.initialize(nakedTimeEvent,emfTimeEvent,behaviour);
				INakedValueSpecification when = getValueSpecification(context,
						emfTimeEvent.getWhen(), OclUsageType.DEF);
				if (when != null) {
					when.setType((INakedClassifier) getNakedPeer(emfTimeEvent.getWhen().getType()));
					nakedTimeEvent.setWhen(when);
					when.setOwnerElement(nakedTimeEvent);
				}
				nakedTimeEvent.setRelative(emfTimeEvent.isRelative());
				nakedTimeEvent.setTimeUnit(resolveTimeUnit(emfTimeEvent));
			}
			return nakedTimeEvent;
		}
		return null;
	}
	private TimeUnit resolveTimeUnit(TimeEvent emfTimeEvent){
		if(emfTimeEvent.getName()!=null){
			if(emfTimeEvent.getName().toLowerCase().contains("month")){
				return TimeUnit.CALENDAR_MONTH;
			}
			if(emfTimeEvent.getName().toLowerCase().contains("week")){
				return TimeUnit.CALENDAR_WEEK;
			}
			if(emfTimeEvent.getName().toLowerCase().contains("business") && emfTimeEvent.getName().toLowerCase().contains("day")){
				return TimeUnit.BUSINESS_DAY;
			}
			if(emfTimeEvent.getName().toLowerCase().contains("business") && emfTimeEvent.getName().toLowerCase().contains("hour")){
				return TimeUnit.BUSINESS_HOUR;
			}
			if(emfTimeEvent.getName().toLowerCase().contains("business") && emfTimeEvent.getName().toLowerCase().contains("minute")){
				return TimeUnit.BUSINESS_MINUTE;
			}
			if( emfTimeEvent.getName().toLowerCase().contains("day")){
				return TimeUnit.CALENDAR_DAY;
			}
			if(emfTimeEvent.getName().toLowerCase().contains("hour")){
				return TimeUnit.ACTUAL_HOUR;
			}
			if(emfTimeEvent.getName().toLowerCase().contains("minute")){
				return TimeUnit.ACTUAL_MINUTE;
			}
		}
		return TimeUnit.BUSINESS_DAY;
	}
	protected INakedClassifier getNearestContext(Behavior b) {
		if (b != null && b.getContext() != null) {
			return (INakedClassifier) getNakedPeer(b.getContext());
		} else {
			return null;
		}
	}
	protected INakedBehavior getOwnedBehavior(INakedElementOwner state, Behavior b) {
		INakedBehavior nakedPeer = (INakedBehavior) getNakedPeer(b);
		if (nakedPeer != null) {
			nakedPeer.setOwnerElement(state);
		}
		return nakedPeer;
	}
}