//
// Created by epagris on 2021. 11. 18..
//

#ifndef WFR_CALLBACK_H
#define WFR_CALLBACK_H

#include <functional>

template <typename... ParamTypes>
class CallbackBase {
public:
    virtual void operator()(ParamTypes... params) = 0;
};

template <typename T, typename... ParamTypes>
class Callback : public CallbackBase<ParamTypes...> {
public:
    T * pObj; // pointer to object to call the function on
    void(T::*pFN)(ParamTypes... params); // member function pointer

    Callback(T * pObj, void(T::*pFN)(ParamTypes... params)) : pObj(pObj), pFN(pFN) {}

    void operator()(ParamTypes... params) override {
        std::invoke(pFN, *pObj, params...);
    }
};

#endif //WFR_CALLBACK_H