package org.andromda.metafacades.uml14;
   
   import java.util.ArrayList;
   import java.util.Collection;
   import java.util.Iterator;
   import java.util.LinkedHashMap;
   import java.util.List;
   import java.util.Map;
   import org.andromda.metafacades.uml.ActivityGraphFacade;
  import org.andromda.metafacades.uml.EventFacade;
  import org.andromda.metafacades.uml.FrontEndAction;
  import org.andromda.metafacades.uml.FrontEndParameter;
  import org.andromda.metafacades.uml.FrontEndUseCase;
  import org.andromda.metafacades.uml.ModelElementFacade;
  import org.andromda.metafacades.uml.StateMachineFacade;
  import org.andromda.metafacades.uml.TransitionFacade;
  import org.andromda.metafacades.uml.UMLProfile;
  import org.andromda.metafacades.uml.UseCaseFacade;
  
  /**
   * MetafacadeLogic implementation for org.andromda.metafacades.uml.FrontEndView.
   *
   * @see org.andromda.metafacades.uml.FrontEndView
   * @author Bob Fields
   */
  public class FrontEndViewLogicImpl
      extends FrontEndViewLogic
  {
      private static final long serialVersionUID = 3878476296052353951L;
  
      /**
       * @param metaObject
       * @param context
       */
      public FrontEndViewLogicImpl(
          Object metaObject,
          String context)
      {
          super(metaObject, context);
      }
  
      /**
       * @see org.andromda.metafacades.uml.FrontEndView#isFrontEndView()
       */
      @Override
      protected boolean handleIsFrontEndView()
      {
          return this.hasStereotype(UMLProfile.STEREOTYPE_FRONT_END_VIEW);
      }
  
      // TODO StrutsFinalStateLogicImpl uses getIncomings instead of getOutgoings - why?
      /* Moved to StateVertexFacade
       * @see org.andromda.metafacades.uml.FrontEndView#getActions()
      @Override
      protected List<FrontEndAction> handleGetActions()
      {
          final List<FrontEndAction> actions = new ArrayList<FrontEndAction>();
          final Collection<TransitionFacade> outgoing = getOutgoings();
          for (final Iterator iterator = outgoing.iterator(); iterator.hasNext();)
          {
              final Object object = iterator.next();
              if (object instanceof FrontEndAction)
              {
                  actions.add((FrontEndAction)object);
              }
          }
          return actions;
      }
       */
  
      /**
       * @see org.andromda.metafacades.uml.FrontEndView#getUseCase()
       */
      @Override
      protected FrontEndUseCase handleGetUseCase()
      {
          UseCaseFacade useCase = null;
          final StateMachineFacade graphContext = this.getStateMachine();
          if (graphContext instanceof ActivityGraphFacade)
          {
              useCase = ((ActivityGraphFacade)graphContext).getUseCase();
              if (!(useCase instanceof FrontEndUseCase))
              {
                  useCase = null;
              }
          }
          return (FrontEndUseCase)useCase;
      }
  
      /**
       * Override to create the package of the view.
       *
       * @see org.andromda.metafacades.uml14.ModelElementFacadeLogic#handleGetPackageName()
       */
      @Override
      public String handleGetPackageName()
      {
          String packageName = null;
          final StateMachineFacade graphContext = this.getStateMachine();
         if (graphContext instanceof ActivityGraphFacade)
         {
             final UseCaseFacade graphUseCase = ((ActivityGraphFacade)graphContext).getUseCase();
             if (graphUseCase instanceof FrontEndUseCase)
             {
                 final FrontEndUseCase useCase = (FrontEndUseCase)graphUseCase;
                 packageName = useCase.getPackageName();
             }
         }
         return packageName;
     }
 
     /**
      * @see org.andromda.metafacades.uml.FrontEndView#getVariables()
      */
     @Override
     protected List<ModelElementFacade> handleGetVariables()
     {
         final Map<String, ModelElementFacade> variablesMap = new LinkedHashMap<String, ModelElementFacade>();
         final Collection<TransitionFacade> incoming = getIncomings();
         for (final Iterator iterator = incoming.iterator(); iterator.hasNext();)
         {
             final TransitionFacade transition = (TransitionFacade)iterator.next();
             final EventFacade trigger = transition.getTrigger();
             if (trigger != null)
             {
                 for (final Iterator parameterIterator = trigger.getParameters().iterator(); parameterIterator.hasNext();)
                 {
                     final ModelElementFacade modelElement = (ModelElementFacade)parameterIterator.next();
                     variablesMap.put(modelElement.getName(), modelElement);
                 }
             }
         }
         return new ArrayList<ModelElementFacade>(variablesMap.values());
     }
 
     /**
      * @see org.andromda.metafacades.uml.FrontEndView#getAllActionParameters()
      */
     @Override
     protected List<FrontEndParameter> handleGetAllActionParameters()
     {
         final List<FrontEndParameter> actionParameters = new ArrayList();
         final Collection<FrontEndAction> actions = this.getActions();
         for (final Iterator<FrontEndAction> iterator = actions.iterator(); iterator.hasNext();)
         {
             final FrontEndAction action = iterator.next();
             actionParameters.addAll(action.getParameters());
         }
         return actionParameters;
     }
 
     /**
      * @see org.andromda.metafacades.uml.FrontEndView#getAllFormFields()
      */
     @Override
     protected List<FrontEndParameter> handleGetAllFormFields()
     {
         final List<FrontEndParameter> actionParameters = new ArrayList<FrontEndParameter>();
         final Collection<FrontEndAction> actions = getActions();
         for (final Iterator<FrontEndAction> iterator = actions.iterator(); iterator.hasNext();)
         {
             final FrontEndAction action = iterator.next();
             actionParameters.addAll(action.getParameters());
         }
         return actionParameters;
     }
 
     /**
      * @see org.andromda.metafacades.uml.FrontEndView#getTables()
      */
     @Override
     protected List<FrontEndParameter> handleGetTables()
     {
         final List<FrontEndParameter> variables = new ArrayList<FrontEndParameter>(this.getVariables());
         for (final Iterator<FrontEndParameter> iterator = variables.iterator(); iterator.hasNext();)
         {
             final FrontEndParameter parameter = iterator.next();
             if (!parameter.isTable())
             {
                 iterator.remove();
             }
         }
         return variables;
     }
 
     /**
      * @return Outgoings FrontEndActions
      * @see org.andromda.metafacades.uml.FrontEndView#getActions()
      */
     @Override
     protected List<FrontEndAction> handleGetActions()
     {
         final List<FrontEndAction> actions = new ArrayList<FrontEndAction>();
         final Collection<TransitionFacade> outgoings = getOutgoings();
         for (final Iterator<TransitionFacade> iterator = outgoings.iterator(); iterator.hasNext();)
         {
             final TransitionFacade object = iterator.next();
             if (object instanceof FrontEndAction)
             {
                 actions.add((FrontEndAction)object);
             }
         }
         // TODO StrutsFinalStateLogicImpl uses getIncomings INSTEAD OF getOutgoings - why?
         /*final Collection<TransitionFacade> incomings = getIncomings();
         for (final Iterator<TransitionFacade> iterator = incomings.iterator(); iterator.hasNext();)
         {
             final TransitionFacade object = iterator.next();
             if (object instanceof FrontEndAction)
             {
                 actions.add((FrontEndAction)object);
             }
         }*/
         return actions;
     }
 }