src/plugins-api-support/SignalsSupport.h

   1 /*
   2  * Copyright (c) 2012 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  *    Licensed under the Apache License, Version 2.0 (the "License");
   5  *    you may not use this file except in compliance with the License.
   6  *    You may obtain a copy of the License at
   7  *
   8  *        http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  *    Unless required by applicable law or agreed to in writing, software
  11  *    distributed under the License is distributed on an "AS IS" BASIS,
  12  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  *    See the License for the specific language governing permissions and
  14  *    limitations under the License.
  15  */
  16 /**
  17  * @file    IPluginRegistry.h
  18  * @author  Grzegorz Krawczyk (g.krawczyk@samgsung.com)
  19  * @version
  20  * @brief
  21  */
  22
  23 #ifndef _WRT_PLUGINS_COMMON_PLUGIN_API_SUPPORT_SIGNALS_SUPPORT_H_
  24 #define _WRT_PLUGINS_COMMON_PLUGIN_API_SUPPORT_SIGNALS_SUPPORT_H_
  25
  26 #include <tuple>
  27 #include <string>
  28 #include "CallbackSupport.h"
  29 #include "tuple.h"
  30 #include "PluginSignals.h"
  31 #include "Plugin.h"
  32
  33 namespace WrtPluginsApi
  34 {
  35
  36 class SignalsSupport
  37 {
  38 public:
  39     virtual ~SignalsSupport() {}
  40
  41     template<typename T>
  42     void Connect(const std::string& libraryName, const typename T::Type& slot)
  43     {
  44         Tuple::get_by_type<CallbackSupport<T>>(m_slots).Connect(libraryName,
  45                                                                 slot);
  46     }
  47
  48     void Disconnect(const std::string& libraryName)
  49     {
  50         DisconnectGroup(m_slots, libraryName);
  51     }
  52
  53     virtual void AddPlugin(const std::string& libraryName, Plugin& plugin) = 0;
  54
  55 protected:
  56     template<typename T, typename ...Args>
  57     void Invoke(const Args&... args)
  58     {
  59         Tuple::get_by_type<CallbackSupport<T>>(m_slots).Invoke(args...);
  60     }
  61
  62     template<typename T, typename ...Args>
  63     void InvokeGroup(const std::string& libraryName, const Args&... args)
  64     {
  65         Tuple::get_by_type<CallbackSupport<T>>(m_slots).InvokeGroup(libraryName,
  66                                                                     args...);
  67     }
  68
  69 private:
  70     template<int N, typename ...Args>
  71     void DisconnectSlot(std::tuple<Args...>& slots,
  72                         const std::string& libraryName,
  73                         typename std::enable_if<(N >= 0)>::type* = NULL)
  74     {
  75         std::get<N>(slots).Disconnect(libraryName);
  76         DisconnectSlot<N-1>(slots, libraryName);
  77     }
  78
  79     template<int N, typename ...Args>
  80     void DisconnectSlot(std::tuple<Args...>& slots,
  81                         const std::string& libraryName,
  82                         typename std::enable_if<(N == -1)>::type* = NULL)
  83     {
  84     }
  85
  86     template<typename ...Args>
  87     void DisconnectGroup(std::tuple<Args...>& slots,
  88                          const std::string& libraryName)
  89     {
  90         DisconnectSlot<sizeof...(Args)-1>(slots, libraryName);
  91     }
  92
  93     std::tuple<CallbackSupport<OnWidgetStart>,
  94                CallbackSupport<OnWidgetStop>,
  95                CallbackSupport<OnFrameLoad>,
  96                CallbackSupport<OnFrameUnload>> m_slots;
  97 };
  98
  99 }
 100
 101 #endif