nsignal1.hpp

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// LICENSE: (Please see the file COPYING for details)
//
// NUS - Nemesis Utilities System: A C++ application development framework 
// Copyright (C) 2006, 2008 Otavio Rodolfo Piske
//
//  This file is part of NUS
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation version 2.1
//  of the License.
//
//  This library 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
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
#ifndef NSIGNAL1_HPP
#define NSIGNAL1_HPP

template <typename Param1>
class NSignal1: public NEvent1<Param1> {
      typedef NMap<int, NSlotBase1<Param1> *> SlotHandlersMap;
      
      public:
            NSignal1();
            
            ~NSignal1();

            bool connect(NSlotBase1<Param1>* slot);

            bool emit_sig(Param1 param) const;

      private:
            SlotHandlersMap m_slots;
};


template <typename Param1>
NSignal1<Param1>::NSignal1(void)
      : m_slots()
{
}


// disconnect all connected slots
template <typename Param1>
NSignal1<Param1>::~NSignal1(void) {
      for(typename SlotHandlersMap::iterator it = m_slots.begin(); 
               it != m_slots.end(); 
               it++)
      {
            if(isAttached(it.key())) {
                  it.value()->disconnect();
            }
      }
}

// connect slot to the signal
template <typename Param1>
bool NSignal1<Param1>::connect(NSlotBase1<Param1>* slot) {
      int handle = -1;
      
      if (!slot) { 
            return false;
      }
      
      handle = slot->connect(this);
      m_slots.insert(handle, slot);
      
      return true;
}

      
template <typename Param1>
bool NSignal1<Param1>::emit_sig(Param1 param) const {
      notify(param);
      return true;
}

#endif // NSIGNAL1_HPP

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