/*
 * SignalBase.h
 *
 * Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
 *
 * 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 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAD_SIGNALS_SIGNALBASE_H_
#define MAD_SIGNALS_SIGNALBASE_H_

#include "Connection.h"

#include <set>
#include <boost/signals.hpp>
#include <boost/thread/locks.hpp>
#include <boost/thread/mutex.hpp>

namespace Mad {
namespace Net {
namespace Signals {

template <typename SignalType, typename FunctionType>
class SignalBase : private boost::noncopyable {
  public:
    typedef boost::slot<FunctionType> slot_type;

  protected:
    typedef SignalType signal_type;

    std::set<boost::signals::connection> connections;
    boost::mutex mutex;

    signal_type signal;

    SignalBase() {}
    ~SignalBase() {
      // Wait for other threads
      boost::lock_guard<boost::mutex> lock(mutex);
    }

  public:
    Connection connect(const slot_type &slot) {
      boost::lock_guard<boost::mutex> lock(mutex);

      boost::signals::connection con(signal.connect(slot));

      connections.insert(con);
      return con;
    }

    void disconnect(const Connection &connection) {
      boost::lock_guard<boost::mutex> lock(mutex);

      std::set<boost::signals::connection>::iterator it = connections.find(connection.connection);

      if(it == connections.end())
        return;

      it->disconnect();
      connections.erase(it);
    }
};

}
}
}

#endif /* MAD_SIGNALS_SIGNALBASE_H_ */