data_monitor_src.h

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/***************************************************************************
 *   Copyright (C) 2025  Alec Leamas                                       *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,  USA.         *
 **************************************************************************/
 
#ifndef DATA_MONITOR_SRC__
#define DATA_MONITOR_SRC__
 
#include <functional>
#include <memory>
#include <string>
#include <unordered_map>
 
#include <wx/event.h>
 
#include "model/comm_navmsg.h"
#include "model/comm_navmsg_bus.h"
#include "model/ocpn_utils.h"
 
#include "observable.h"
 
class DataMonitorSrc : public wxEvtHandler {
  using SinkFunc = std::function<void(const std::shared_ptr<const NavMsg>&)>;
 
public:
  DataMonitorSrc(const SinkFunc& sink_func);
 
private:
  SinkFunc m_sink_func;
  std::unordered_map<std::string, ObsListener> m_listeners;
  ObsListener new_msg_lstnr;
  ObsListener undelivered_msg_lstnr;
  std::string m_last_payload;  // Horrible hack (tm)
 
  void OnNewMessage();
 
  void OnMessage(ObservedEvt& ev);
};
 
#endif  //  DATA_MONITOR_SRC__