CallbackMap.h

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//
//------------------------------------------------------------------------
//
// File   : CallbackMap.h
// Author : Patrick McCormick (pat@acl.lanl.gov)
//
// $Date: 2003/08/01 22:10:47 $
// $Revision: 1.5 $
//
//
// This class implements a simple lookup map from a CallbackID to a 
// callback (a function or a method).  Using the map you can then do
// a quick lookup from ID to callback.  This code is really nothing 
// more than a wrapper around the STL map class. 
//
// TODO:  As it stands it is only possible to call a single function
// for each ID.  There might be situations where this limits your 
// flexibility.  
// 
// This code is based on the VIF (Visualization Interconnection Framework)
// that helped to drive TRex -- back when there were such beasts... 
//
//------------------------------------------------------------------------
//
#ifndef KOKO_CALLBACK_MAP_H_
#define KOKO_CALLBACK_MAP_H_

#include <map> // Should hack this to support systems with map.h as well... 

#include "Callbacks.h"
#include "koko.h"

class KokoBuffer;

class CallbackMap
{
  public:
    CallbackMap(void);
    ~CallbackMap(void);

    bool Add(KokoTag tag, Callback *cb);
    inline bool Add(KokoTag tag, Callback &cb)
    { 
      Callback *cbp = cb.clone();
      this->Add(tag, cbp);
    };
          
    bool Remove(KokoTag tag);
    bool Invoke(KokoTag tag, KokoBuffer &databuf);     

  private:
    typedef std::pair<KokoTag, Callback *> CBPair;
    typedef std::map<KokoTag, Callback *>  CBMap;
    typedef CBMap::iterator                CBIterator;
    typedef std::pair<CBIterator, bool>    CBBool;
    CBMap                                  cbmap;
};

#endif

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