/*

  Wotonomy: OpenStep design patterns for pure Java applications.

  Copyright (C) 2000 Blacksmith, Inc.

  This library is free software; you can redistribute it and/or

  modify it under the terms of the GNU Lesser General Public

  License as published by the Free Software Foundation; either

  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,

  but WITHOUT ANY WARRANTY; without even the implied warranty of

  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public

  License along with this library; if not, see http://www.gnu.org

  */

 package net.wotonomy.web;

 import net.wotonomy.foundation.NSDictionary;

 import net.wotonomy.foundation.NSMutableDictionary;

 public class WOSwitchComponent extends WODynamicElement {

     private NSMutableDictionary elements;

     private String currentName;

     private WOElement currentElement;

     protected WOSwitchComponent() 

     {

         super();

         elements = new NSMutableDictionary();

     }

     public WOSwitchComponent(String aName, NSDictionary aMap, WOElement template) 

     {

         super(aName, aMap, template);

         elements = new NSMutableDictionary();

     }

     private WOElement getCurrentElement( WOContext c )

     {

         String name = stringForProperty( "WOComponentName", c.component() );

         if ( name == null ) return null;

         if ( currentElement != null && name.equals( currentName ) ) return currentElement;

         currentName = name;

         currentElement = (WOElement) elements.objectForKey( name );

         if ( currentElement == null )

         {

             currentElement = WOApplication.application().pageWithName( name, c );

             if ( currentElement != null )

             {

                 currentElement.associations = associations;

                 elements.setObjectForKey( currentElement, name );

             }

         }

         return currentElement;

     }

     void ensureAwakeInContext (WOContext aContext)

     {

         if ( aContext != null )

         {

             WOElement element = getCurrentElement( aContext );

             if ( element != null )

             {

                 aContext.pushElement( element );

                 element.ensureAwakeInContext( aContext );

                 aContext.popElement();

             }

         }

     }

     public void takeValuesFromRequest(WORequest r, WOContext c) 

     {

         WOElement element = getCurrentElement( c );

         if ( element != null )

         {

             c.pushElement( element );

             element.takeValuesFromRequest( r, c );

             c.popElement();

         }

     }

     public WOActionResults invokeAction(WORequest r, WOContext c) 

     {

         WOActionResults result = null;

         WOElement element = getCurrentElement( c );

         if ( element != null )

         {

             c.pushElement( element );

             result = element.invokeAction( r, c );

             c.popElement();

         }

         return result;

     }

     public void appendToResponse(WOResponse r, WOContext c) 

     {

         WOElement element = getCurrentElement( c );

         if ( element != null )

         {

             c.pushElement( element );

             element.appendToResponse( r, c );

             c.popElement();

         }

     }

 }