genericlistener.hh

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// SPDX-FileCopyrightText: 2021-2025 The Ikarus Developers ikarus@ibb.uni-stuttgart.de
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#pragma once
#include <spdlog/spdlog.h>
 
#include <ikarus/utils/broadcaster/broadcastermessages.hh>
#include <ikarus/utils/listener/listener.hh>
 
namespace Ikarus {
 
template <typename BC>
class GenericListener : public Listener
{
  using Messages = BC::MessageType;
  using State    = BC::State;
 
public:
  template <typename F>
  GenericListener(BC& bc, Messages message, F&& f)
      : message_{message},
        f_{std::forward<F>(f)} {
    this->subscribe(bc, [&](Messages message, const BC::State& state) { this->updateImpl(message, state); });
  }
 
  void updateImpl(Messages message, const State& state) {
    if (message_ == message)
      f_(state);
  }
 
private:
  Messages message_;
  std::function<void(const State&)> f_;
};
 
template <typename BC, typename MT, typename F>
GenericListener(BC&, MT, F&&) -> GenericListener<BC>;
 
} // namespace Ikarus