DVar.hpp

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#pragma once
 
#include "DVarSystem.hpp"
 
namespace iv
{
 
template< class Type >
class DVar : private DVarListenerI
{
public:
ClientMarker cm;
 
                    DVar( Instance * inst, DVarIdT< Type > id = DVarIdT< Type >() );
                    ~DVar();
                    
    Instance *      instance();
                
    Type            get();
    
    void            dvar( DVarIdT< Type > id );
    DVarIdT< Type > dvar() const;
    
    void            on_changed( std::function< void( Type const & newval ) > const &, bool call_immediately = false );
    
private:
    virtual void    on_dvar_changed( DVarId id, std::type_index type, void * value ) override;
    
    Type            get_uncached();
    
private:
    Instance * inst;
    DVarSystem * dvs;
    DVarIdT< Type > id;
    std::function< void( Type const & newval ) > _on_changed;
    Type cached; 
};
 
}
 
#include "DVar.inl"