/* $Id: CrNoTransitions.java 17849 2010-01-12 19:50:34Z linus $

  *****************************************************************************

  * Copyright (c) 2009 Contributors - see below

  * 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:

  *    maurelio1234

  *****************************************************************************

  *

  * Some portions of this file was previously release using the BSD License:

  */

 // Copyright (c) 1996-2007 The Regents of the University of California. All

 // Rights Reserved. Permission to use, copy, modify, and distribute this

 // software and its documentation without fee, and without a written

 // agreement is hereby granted, provided that the above copyright notice

 // and this paragraph appear in all copies.  This software program and

 // documentation are copyrighted by The Regents of the University of

 // California. The software program and documentation are supplied "AS

 // IS", without any accompanying services from The Regents. The Regents

 // does not warrant that the operation of the program will be

 // uninterrupted or error-free. The end-user understands that the program

 // was developed for research purposes and is advised not to rely

 // exclusively on the program for any reason.  IN NO EVENT SHALL THE

 // UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,

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 package org.argouml.uml.cognitive.critics;

 import java.util.Collection;

 import java.util.HashSet;

 import java.util.Set;

 import org.argouml.cognitive.Critic;

 import org.argouml.cognitive.Designer;

 import org.argouml.model.Model;

 import org.argouml.uml.cognitive.UMLDecision;

 /**

  * A critic to detect when a state has no outgoing transitions.

  *

  * @author jrobbins

  */

 public class CrNoTransitions extends CrUML {

     /**

      * Constructor.

      */

     public CrNoTransitions() {

         setupHeadAndDesc();

         addSupportedDecision(UMLDecision.STATE_MACHINES);

         setKnowledgeTypes(Critic.KT_COMPLETENESS);

         addTrigger("incoming");

         addTrigger("outgoing");

     }

     /*

      * @see org.argouml.uml.cognitive.critics.CrUML#predicate2(java.lang.Object, org.argouml.cognitive.Designer)

      */

     public boolean predicate2(Object dm, Designer dsgr) {

         if (!(Model.getFacade().isAStateVertex(dm))) {

             return NO_PROBLEM;

         }

         Object sv = /*(MStateVertex)*/ dm;

         if (Model.getFacade().isAState(sv)) {

             Object sm = Model.getFacade().getStateMachine(sv);

             if (sm != null && Model.getFacade().getTop(sm) == sv) {

                 return NO_PROBLEM;

             }

         }

         Collection outgoing = Model.getFacade().getOutgoings(sv);

         Collection incoming = Model.getFacade().getIncomings(sv);

         boolean needsOutgoing = outgoing == null || outgoing.size() == 0;

         boolean needsIncoming = incoming == null || incoming.size() == 0;

         if (Model.getFacade().isAPseudostate(sv)) {

             Object k = Model.getFacade().getKind(sv);

             if (k.equals(Model.getPseudostateKind().getChoice())) {

                 return NO_PROBLEM;

             }

             if (k.equals(Model.getPseudostateKind().getJunction())) {

                 return NO_PROBLEM;

             }

             if (k.equals(Model.getPseudostateKind().getInitial())) {

                 needsIncoming = false;

             }

         }

         if (Model.getFacade().isAFinalState(sv)) {

             needsOutgoing = false;

         }

         if (needsIncoming && needsOutgoing) {

             return PROBLEM_FOUND;

         }

         return NO_PROBLEM;

     }

     /*

      * @see org.argouml.uml.cognitive.critics.CrUML#getCriticizedMetatypes()

      */

     public Set<Object> getCriticizedDesignMaterials() {

         Set<Object> ret = new HashSet<Object>();

         ret.add(Model.getMetaTypes().getStateVertex());

         return ret;

     }

 }