1 /* This file is part of Clementine.
2    Copyright 2012, 2014, John Maguire <john.maguire@gmail.com>
3    Copyright 2014, Krzysztof Sobiecki <sobkas@gmail.com>
4 
5    Clementine is free software: you can redistribute it and/or modify
6    it under the terms of the GNU General Public License as published by
7    the Free Software Foundation, either version 3 of the License, or
8    (at your option) any later version.
9 
10    Clementine is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13    GNU General Public License for more details.
14 
15    You should have received a copy of the GNU General Public License
16    along with Clementine.  If not, see <http://www.gnu.org/licenses/>.
17 */
18 
19 #ifndef CORE_SIGNALCHECKER_H_
20 #define CORE_SIGNALCHECKER_H_
21 
22 #include <glib-object.h>
23 
24 #include <boost/function_types/function_arity.hpp>
25 #include <boost/typeof/typeof.hpp>
26 
27 // Do not call this directly, use CHECKED_GCONNECT instead.
28 gulong CheckedGConnect(gpointer source, const char* signal, GCallback callback,
29                        gpointer data, const int callback_param_count);
30 
31 #define FUNCTION_ARITY(callback) \
32   boost::function_types::function_arity<BOOST_TYPEOF(callback)>::value
33 
34 #define CHECKED_GCONNECT(source, signal, callback, data)      \
35   CheckedGConnect(source, signal, G_CALLBACK(callback), data, \
36                   FUNCTION_ARITY(callback))
37 
38 #endif  // CORE_SIGNALCHECKER_H_
39