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[chaz/yoink] / src / Moof / Dispatcher.hh
1
2 /*******************************************************************************
3
4 Copyright (c) 2009, Charles McGarvey
5 All rights reserved.
6
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
9
10 * Redistributions of source code must retain the above copyright notice,
11 this list of conditions and the following disclaimer.
12 * Redistributions in binary form must reproduce the above copyright notice,
13 this list of conditions and the following disclaimer in the documentation
14 and/or other materials provided with the distribution.
15
16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
20 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
27 *******************************************************************************/
28
29 #ifndef _MOOF_DISPATCHER_HH_
30 #define _MOOF_DISPATCHER_HH_
31
32 #include <string>
33
34 #include <boost/function.hpp>
35 #include <boost/shared_ptr.hpp>
36
37
38 namespace Mf {
39
40
41 /**
42 * Interface for a notification class.
43 */
44
45 class Notification
46 {
47 public:
48 virtual ~Notification();
49 };
50
51
52 /**
53 * Dispatcher of notifications to interested parties.
54 */
55
56 class Dispatcher
57 {
58 class Impl;
59 boost::shared_ptr<Impl> impl_;
60
61 public:
62
63 typedef void* Handler;
64 typedef boost::function<void(const Notification*)> Function;
65
66 Dispatcher();
67 ~Dispatcher();
68
69 // get global instance
70 static Dispatcher& getInstance();
71
72 Handler addHandler(const std::string& message, const Function& callback);
73 Handler addHandler(const std::string& message, const Function& callback,
74 Handler id);
75
76 void removeHandler(Handler id);
77
78 void dispatch(const std::string& message, const Notification* param = 0);
79 };
80
81
82 namespace dispatcher {
83
84 inline Dispatcher::Handler addHandler(const std::string& message,
85 const Dispatcher::Function& callback)
86 {
87 Dispatcher::getInstance().addHandler(message, callback);
88 }
89
90 inline Dispatcher::Handler addHandler(const std::string& message,
91 const Dispatcher::Function& callback, Dispatcher::Handler id)
92 {
93 Dispatcher::getInstance().addHandler(message, callback, id);
94 }
95
96 inline void removeHandler(Dispatcher::Handler id)
97 {
98 Dispatcher::getInstance().removeHandler(id);
99 }
100
101 inline void dispatch(const std::string& message, const Notification* param = 0)
102 {
103 Dispatcher::getInstance().dispatch(message, param);
104 }
105
106 } // namespace dispatch
107
108 } // namespace Mf
109
110 #endif // _MOOF_DISPATCHER_HH_
111
112 /** vim: set ts=4 sw=4 tw=80: *************************************************/
113
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