/*****************************************************************************
* Copyright (c) 2010 Atos Origin.
*
*
* 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:
* Mathieu Velten (Atos Origin) mathieu.velten@atosorigin.com - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.uml.diagram.navigation;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.papyrus.infra.gmfdiag.navigation.ExistingNavigableElement;
import org.eclipse.papyrus.infra.gmfdiag.navigation.IModelLinker;
import org.eclipse.papyrus.infra.gmfdiag.navigation.INavigationRule;
import org.eclipse.papyrus.infra.gmfdiag.navigation.NavigableElement;
import org.eclipse.uml2.uml.Behavior;
import org.eclipse.uml2.uml.State;
import org.eclipse.uml2.uml.UMLPackage;
public class StateRule implements INavigationRule {
public boolean handle(EObject element) {
return element instanceof State;
}
public List<NavigableElement> getNextPossibleElements(NavigableElement currentNavElement) {
List<NavigableElement> nextPossibleElements = new LinkedList<NavigableElement>();
final State state = (State)currentNavElement.getElement();
if(state.getDoActivity() != null) {
nextPossibleElements.add(new ExistingNavigableElement(state.getDoActivity(), UMLPackage.Literals.STATE__DO_ACTIVITY));
} else {
UMLRuleHelper.addBehaviorCreatedNavigableElements(nextPossibleElements, currentNavElement, UMLPackage.Literals.STATE__DO_ACTIVITY, new IModelLinker() {
public void linkToModel(EObject toLink) {
state.setDoActivity((Behavior)toLink);
}
});
}
if(state.getEntry() != null) {
nextPossibleElements.add(new ExistingNavigableElement(state.getEntry(), UMLPackage.Literals.STATE__ENTRY));
} else {
UMLRuleHelper.addBehaviorCreatedNavigableElements(nextPossibleElements, currentNavElement, UMLPackage.Literals.STATE__ENTRY, new IModelLinker() {
public void linkToModel(EObject toLink) {
state.setEntry((Behavior)toLink);
}
});
}
if(state.getExit() != null) {
nextPossibleElements.add(new ExistingNavigableElement(state.getExit(), UMLPackage.Literals.STATE__EXIT));
} else {
UMLRuleHelper.addBehaviorCreatedNavigableElements(nextPossibleElements, currentNavElement, UMLPackage.Literals.STATE__EXIT, new IModelLinker() {
public void linkToModel(EObject toLink) {
state.setExit((Behavior)toLink);
}
});
}
return nextPossibleElements;
}
}