event.h
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1 /*
2  * Copyright (C) 2006-2008 by Marc Boris Duerner
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * As a special exception, you may use this file as part of a free
10  * software library without restriction. Specifically, if other files
11  * instantiate templates or use macros or inline functions from this
12  * file, or you compile this file and link it with other files to
13  * produce an executable, this file does not by itself cause the
14  * resulting executable to be covered by the GNU General Public
15  * License. This exception does not however invalidate any other
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17  * General Public License.
18  *
19  * This library is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22  * Lesser General Public License for more details.
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27  */
28 
29 #ifndef cxxtools_EVENT_H
30 #define cxxtools_EVENT_H
31 
32 #include <typeinfo>
33 
34 namespace cxxtools
35 {
36 
44  class Event
45  {
46  public:
49  virtual ~Event()
50  {}
51 
52  virtual Event* clone() const = 0;
53 
54  virtual void destroy() = 0;
55 
56  virtual const std::type_info& typeInfo() const = 0;
57  };
58 
59  template <typename T>
60  class BasicEvent : public Event
61  {
62  public:
64  {
65  }
66 
67  BasicEvent(const BasicEvent& /*src*/)
68  {
69  }
70 
71  virtual const std::type_info& typeInfo() const
72  {
73  return typeid(T);
74  }
75 
76  virtual Event* clone() const
77  {
78  return new T(*static_cast<const T*>(this));
79  }
80 
81  virtual void destroy()
82  {
83  delete this;
84  }
85  };
86 
87 } // namespace cxxtools
88 
89 #endif