gls_menu_data_factory.h

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#if !defined(GLS_MENUDATAFACTORY_H)
#define GLS_MENUDATAFACTORY_H

#ifdef WIN32
#pragma warning (disable:4786)
#endif

#include <string>

#include "gls_menu_data.h"

class GlsMenuDictionary;

//----------------------------------------------------------------------------
//----------------------------------------------------------------------------
class GlsMenuDataFactory : public GlsMenuData
{
public:

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    GlsMenuDataFactory(const std::string& name, GlsMenuDictionary& dict);

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    virtual ~GlsMenuDataFactory() {}

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    virtual std::istream& ReadValue(std::istream& instr);

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    virtual std::ostream& WriteValue(std::ostream& outstr);


protected:

    GlsMenuDictionary& _dict;

    template<class T>
    class Data
    {
    public:
        //----------------------------------------------------------------
        //----------------------------------------------------------------
        static GlsMenuData* Create(
            const std::string&  name, 
                  std::istream& instr)
        {
            T dummy;
            GlsMenuData_T<T>* data = new GlsMenuData_T<T>(name, dummy);
            data->ReadValue(instr);
            return data;
        }
        //----------------------------------------------------------------
        //----------------------------------------------------------------
        static GlsMenuData* CreateDiscrete(
            const std::string&  name, 
                  std::istream& instr)
        {
            GlsMenuDiscrete_T<T>* data = 
                new GlsMenuDiscrete_T<T>(name, T(0));
            data->ReadValue(instr);
            return data;
        }
    };

    //------------------------------------------------------------------------
    //------------------------------------------------------------------------
    virtual GlsMenuData* Create(const std::string& name, 
                                const std::string& type, 
                                std::istream&      instr);

}; // end GlsMenuDataFactory



#endif // GLS_MENUDATAFACTORY_H