/**
 * Stone of Orthanc
 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
 * Department, University Hospital of Liege, Belgium
 * Copyright (C) 2017-2018 Osimis S.A., Belgium
 *
 * This program is free software: you can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License
 * as published by the Free Software Foundation, either version 3 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
 * Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 **/


#pragma once

#include "ICallable.h"
#include "IObservable.h"
#include "IObserver.h"

#include <boost/noncopyable.hpp>

namespace OrthancStone {


  template<typename TMessage>
  class MessageForwarder : public IObserver, public Callable<MessageForwarder<TMessage>, TMessage>
  {
    IObservable& observable_;
  public:
    MessageForwarder(MessageBroker& broker,
                     IObservable& observable // the object that will emit the forwarded message
                     )
      : IObserver(broker),
        Callable<MessageForwarder<TMessage>, TMessage>(*this, &MessageForwarder::ForwardMessage),
        observable_(observable)
    {
    }

  protected:
    void ForwardMessage(const TMessage& message)
    {
      observable_.EmitMessage(message);
    }
  };
}