sigc::signal<void, unsigned, bool> signal_function_changed;
sigc::signal<void, const std::string &> signal_route_changed;
sigc::signal<void, const std::string &> signal_status_changed;
sigc::signal<void, unsigned, bool> signal_function_changed;
sigc::signal<void, const std::string &> signal_route_changed;
sigc::signal<void, const std::string &> signal_status_changed;