/*

  * Apache License

  * Version 2.0, January 2004

  * http://www.apache.org/licenses/

  *

  * Copyright 2008 by chenillekit.org

  *

  * Licensed under the Apache License, Version 2.0 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at

  *

  * http://www.apache.org/licenses/LICENSE-2.0

  */

 package org.chenillekit.access.services.impl;

 import java.io.IOException;

 import org.apache.tapestry5.EventConstants;

 import org.apache.tapestry5.internal.EmptyEventContext;

 import org.apache.tapestry5.ioc.services.SymbolSource;

 import org.apache.tapestry5.services.ComponentEventRequestFilter;

 import org.apache.tapestry5.services.ComponentEventRequestHandler;

 import org.apache.tapestry5.services.ComponentEventRequestParameters;

 import org.chenillekit.access.ChenilleKitAccessConstants;

 import org.chenillekit.access.services.AccessValidator;

 /**

  *

  * @version $Id: ComponentEventAccessFilter.java 333 2008-11-19 16:26:03Z mlusetti $

  */

 public class ComponentEventAccessFilter implements ComponentEventRequestFilter

 {

         private final AccessValidator accessValidator;

         private final String loginPage;

         public ComponentEventAccessFilter(AccessValidator accessValidator, SymbolSource symbols)

         {

                 this.accessValidator = accessValidator;

                 this.loginPage = symbols.valueForSymbol(ChenilleKitAccessConstants.LOGIN_PAGE);

         }

         public void handle(ComponentEventRequestParameters parameters,

                         ComponentEventRequestHandler handler) throws IOException

         {

                 if (accessValidator.hasAccess(parameters.getActivePageName(), parameters.getNestedComponentId(), parameters.getEventType()))

                         handler.handle(parameters);

                 else

                         handler.handle(getLoginComponentParameters());

         }

         private ComponentEventRequestParameters getLoginComponentParameters()

         {

                 ComponentEventRequestParameters parameters = new ComponentEventRequestParameters(loginPage, loginPage,

                                 "", EventConstants.ACTIVATE, new EmptyEventContext(),new EmptyEventContext());

                 return parameters;

         }

 }