/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_5/src/Fireworks/Core/interface/FWGenericParameter.h

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#ifndef Fireworks_Core_FWGenericParameter_h
#define Fireworks_Core_FWGenericParameter_h
// -*- C++ -*-
//
// Package:     Core
// Class  :     FWBoolParameter
//
//
// Original Author:  Chris Jones
//         Created:  Fri Mar  7 14:36:34 EST 2008
// $Id: FWGenericParameter.h,v 1.3 2012/02/22 03:45:57 amraktad Exp $
//

// system include files
#include <sigc++/signal.h>
#include <sstream>

// user include files
#include "Fireworks/Core/interface/FWParameterBase.h"
#include "Fireworks/Core/interface/FWConfiguration.h"

// forward declarations

template <class T>
class FWGenericParameter : public FWParameterBase
{
public:
   typedef T value_type;

   FWGenericParameter() :
      FWParameterBase(0, "invalid")
   {}

   FWGenericParameter(FWParameterizable* iParent,
                      const std::string& iName,
                      const T &iDefault=T()) :
      FWParameterBase(iParent,iName),
      m_value(iDefault)
   {}

   template <class K>
   FWGenericParameter(FWParameterizable* iParent,
                      const std::string& iName,
                      K iCallback,
                      const T &iDefault=T()) :
      FWParameterBase(iParent,iName),
      m_value(iDefault)
   {
      changed_.connect(iCallback);
   }

   //virtual ~FWBoolParameter();


   // ---------- const member functions ---------------------

   T value() const { return m_value; }

   virtual void addTo(FWConfiguration& iTo) const 
   {
      std::ostringstream s;
      s<<m_value;
      iTo.addKeyValue(name(),FWConfiguration(s.str()));
   }

   // ---------- static member functions --------------------

   // ---------- member functions ---------------------------

   virtual void setFrom(const FWConfiguration&iFrom)
   {
      if (const FWConfiguration* config = iFrom.valueForKey(name()))
      {
         std::istringstream s(config->value());
         s>>m_value;
      }
      changed_(m_value);
   }

   void set(T iValue)
   {
      m_value = iValue;
      changed_(iValue);
   }

   sigc::signal<void,T> changed_;

private:
   FWGenericParameter(const FWGenericParameter&);                  // stop default
   const FWGenericParameter& operator=(const FWGenericParameter&); // stop default

   // ---------- member data --------------------------------

   T m_value;
};


#endif