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1   /*
2    * Apache License
3    * Version 2.0, January 2004
4    * http://www.apache.org/licenses/
5    *
6    * Copyright 2008 by chenillekit.org
7    *
8    * Licensed under the Apache License, Version 2.0 (the "License");
9    * you may not use this file except in compliance with the License.
10   * You may obtain a copy of the License at
11   *
12   * http://www.apache.org/licenses/LICENSE-2.0
13   */
14  package org.chenillekit.access.services.impl;
15  
16  import java.io.IOException;
17  
18  import org.apache.tapestry5.EventConstants;
19  import org.apache.tapestry5.internal.EmptyEventContext;
20  import org.apache.tapestry5.ioc.services.SymbolSource;
21  import org.apache.tapestry5.services.ComponentEventRequestFilter;
22  import org.apache.tapestry5.services.ComponentEventRequestHandler;
23  import org.apache.tapestry5.services.ComponentEventRequestParameters;
24  import org.chenillekit.access.ChenilleKitAccessConstants;
25  import org.chenillekit.access.services.AccessValidator;
26  
27  /**
28   *
29   * @version $Id: ComponentEventAccessFilter.java 333 2008-11-19 16:26:03Z mlusetti $
30   */
31  public class ComponentEventAccessFilter implements ComponentEventRequestFilter
32  {
33  	private final AccessValidator accessValidator;
34  	private final String loginPage;
35  
36  	public ComponentEventAccessFilter(AccessValidator accessValidator, SymbolSource symbols)
37  	{
38  		this.accessValidator = accessValidator;
39  		this.loginPage = symbols.valueForSymbol(ChenilleKitAccessConstants.LOGIN_PAGE);
40  	}
41  
42  	public void handle(ComponentEventRequestParameters parameters,
43  			ComponentEventRequestHandler handler) throws IOException
44  	{
45  		if (accessValidator.hasAccess(parameters.getActivePageName(), parameters.getNestedComponentId(), parameters.getEventType()))
46  			handler.handle(parameters);
47  		else
48  			handler.handle(getLoginComponentParameters());
49  
50  	}
51  
52  	private ComponentEventRequestParameters getLoginComponentParameters()
53  	{
54  		ComponentEventRequestParameters parameters = new ComponentEventRequestParameters(loginPage, loginPage,
55  				"", EventConstants.ACTIVATE, new EmptyEventContext(),new EmptyEventContext());
56  
57  
58  		return parameters;
59  	}
60  
61  }