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Dogcows Code - chaz/yoink/blob - src/Moof/Dispatcher.cc
2 /*******************************************************************************
4 Copyright (c) 2009, Charles McGarvey
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
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.
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.
27 *******************************************************************************/
31 #include "Dispatcher.hh"
39 Notification::~Notification() {}
42 struct Dispatcher::Impl
47 Dispatcher::Handler
getNewHandler()
50 return (Dispatcher::Handler
)id
;
53 typedef std::pair
<Dispatcher::Handler
,Dispatcher::Function
> Callback
;
54 typedef std::multimap
<std::string
,Callback
> CallbackLookup
;
55 typedef CallbackLookup::iterator CallbackIter
;
57 typedef std::multimap
<Dispatcher::Handler
,std::string
> HandlerLookup
;
58 typedef HandlerLookup::iterator HandlerIter
;
61 inline Handler
addHandler(const std::string
& message
,
62 const Function
& callback
, Handler id
)
64 callbacks
.insert(std::make_pair(message
, std::make_pair(id
, callback
)));
65 handlers
.insert(std::make_pair(id
, message
));
70 inline void removeHandler(Handler id
)
72 std::pair
<HandlerIter
,HandlerIter
> matching(handlers
.equal_range(id
));
74 for (HandlerIter it
= matching
.first
; it
!= matching
.second
; ++it
)
76 CallbackIter first
= callbacks
.find((*it
).second
);
77 CallbackIter last
= callbacks
.end();
79 for (CallbackIter jt
= first
; jt
!= last
; ++jt
)
81 if (((*jt
).second
).first
== id
)
94 CallbackLookup callbacks
;
95 HandlerLookup handlers
;
99 Dispatcher::Dispatcher() :
100 impl_(new Dispatcher::Impl
) {}
102 Dispatcher::~Dispatcher() {}
105 Dispatcher
& Dispatcher::getInstance()
107 static Dispatcher dispatcher
;
112 Dispatcher::Handler
Dispatcher::addHandler(const std::string
& message
,
113 const Function
& callback
)
115 return addHandler(message
, callback
, impl_
->getNewHandler());
118 Dispatcher::Handler
Dispatcher::addHandler(const std::string
& message
,
119 const Function
& callback
, Handler id
)
122 return impl_
->addHandler(message
, callback
, id
);
126 void Dispatcher::removeHandler(Handler id
)
129 return impl_
->removeHandler(id
);
133 void Dispatcher::dispatch(const std::string
& message
, const Notification
* param
)
135 std::pair
<Impl::CallbackIter
,Impl::CallbackIter
>
136 callbacks(impl_
->callbacks
.equal_range(message
));
138 for (Impl::CallbackIter it
= callbacks
.first
; it
!= callbacks
.second
; ++it
)
140 Function callback
= ((*it
).second
).second
;
148 /** vim: set ts=4 sw=4 tw=80: *************************************************/
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