dbus/signal.h

   1 /* -*- Mode: C ; c-basic-offset: 2 -*- */
   2 /*
   3  * LADI Session Handler (ladish)
   4  *
   5  * Copyright (C) 2008,2009,2010,2011 Nedko Arnaudov <nedko@arnaudov.name>
   6  * Copyright (C) 2008 Juuso Alasuutari <juuso.alasuutari@gmail.com>
   7  *
   8  **************************************************************************
   9  * This file contains interface to D-Bus signal helpers
  10  **************************************************************************
  11  *
  12  * Licensed under the Academic Free License version 2.1
  13  *
  14  * LADI Session Handler is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * LADI Session Handler 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
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
  26  * or write to the Free Software Foundation, Inc.,
  27  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  28  */
  29
  30 #ifndef __LASH_DBUS_SIGNAL_H__
  31 #define __LASH_DBUS_SIGNAL_H__
  32
  33 struct cdbus_signal_arg_descriptor
  34 {
  35   const char * name;
  36   const char * type;
  37 };
  38
  39 struct cdbus_signal_descriptor
  40 {
  41   const char * name;
  42   const struct cdbus_signal_arg_descriptor * args;
  43 };
  44
  45 void cdbus_signal_send(DBusConnection * connection_ptr, DBusMessage * message_ptr);
  46
  47 void
  48 cdbus_signal_emit(
  49   DBusConnection * connection_ptr,
  50   const char * path,
  51   const char * interface,
  52   const char * name,
  53   const char * signature,
  54   ...);
  55
  56 #define SIGNAL_ARGS_BEGIN(signal_name, descr) \
  57 static const struct cdbus_signal_arg_descriptor signal_name ## _args_dtor[] = \
  58 {
  59
  60 #define SIGNAL_ARG_DESCRIBE(arg_name, arg_type, descr)         \
  61         {                                                      \
  62                 .name = arg_name,                              \
  63                 .type = arg_type                               \
  64         },
  65
  66 #define SIGNAL_ARGS_END                                        \
  67         {                                                      \
  68                 .name = NULL,                                  \
  69                 .type = NULL                                   \
  70         }                                                      \
  71 };
  72
  73 #define SIGNALS_BEGIN                                          \
  74 static const struct cdbus_signal_descriptor signals_dtor[] =   \
  75 {
  76
  77 #define SIGNAL_DESCRIBE(signal_name)                           \
  78         {                                                      \
  79                 .name = # signal_name,                         \
  80                 .args = signal_name ## _args_dtor              \
  81         },
  82
  83 #define SIGNALS_END                                            \
  84         {                                                      \
  85                 .name = NULL,                                  \
  86                 .args = NULL                                   \
  87         }                                                      \
  88 };
  89
  90 #endif /* __LASH_DBUS_SIGNAL_H__ */