/data/refman/pasoursint/CMSSW_4_4_5_patch3/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 1.2 2010/02/13 14:01:33 eulisse 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)
   {}
   //virtual ~FWBoolParameter();
   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);
   }
   // ---------- 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