eventsink.h
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1 /*
2  * Copyright (C) 2006-2007 Laurentiu-Gheorghe Crisan
3  * Copyright (C) 2006-2008 Marc Boris Duerner
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * As a special exception, you may use this file as part of a free
11  * software library without restriction. Specifically, if other files
12  * instantiate templates or use macros or inline functions from this
13  * file, or you compile this file and link it with other files to
14  * produce an executable, this file does not by itself cause the
15  * resulting executable to be covered by the GNU General Public
16  * License. This exception does not however invalidate any other
17  * reasons why the executable file might be covered by the GNU Library
18  * General Public License.
19  *
20  * This library is distributed in the hope that it will be useful,
21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23  * Lesser General Public License for more details.
24  *
25  * You should have received a copy of the GNU Lesser General Public
26  * License along with this library; if not, write to the Free Software
27  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28  */
29 #ifndef CXXTOOLS_EVENTSINK_H
30 #define CXXTOOLS_EVENTSINK_H
31 
32 #include <cxxtools/event.h>
33 #include <cxxtools/mutex.h>
34 #include <list>
35 
36 namespace cxxtools {
37 
38  class EventSource;
39 
40  class EventSink : protected NonCopyable
41  {
42  friend class EventSource;
43 
44  public:
45  EventSink();
46 
47  virtual ~EventSink();
48 
50  void queueEvent(const Event& event);
51 
53  void commitEvent(const Event& event);
54 
57  void queuePriorityEvent(const Event& event);
58 
61  void commitPriorityEvent(const Event& event);
62 
63  protected:
64  virtual void onQueueEvent(const Event& event, bool priority) = 0;
65  virtual void onCommitEvent(const Event& event, bool priority) = 0;
66 
67  private:
68  void onConnect(EventSource& source);
69  void onDisconnect(EventSource& source);
70  void onUnsubscribe(EventSource& source);
71 
72  private:
73  mutable RecursiveMutex _mutex;
74  std::list<EventSource*> _sources;
75  };
76 
77 } // namespace cxxtools
78 
79 #endif