Callback.h

#pragma once


#include "api/WiconnectTypes.h"
#include "FunctionPointer.h"



namespace wiconnect
{


typedef void (*_Callback)(WiconnectResult result, void *arg1, void *arg2);


class Callback : public FunctionPointer
{
public:
    /*************************************************************************************************/
    Callback(_Callback func = 0)
    {
        _function = (void*)func;
        _membercaller = NULL;
        _object = NULL;
    }

    /*************************************************************************************************/
    template<typename T>
    Callback(T *object, void (T::*member)(WiconnectResult result, void *arg1, void *arg2))
    {
        _object = static_cast<void*>(object);
        memcpy(_member, (char*)&member, sizeof(member));
        _membercaller = (void*)&Callback::membercaller<T>;
        _function = 0;
    }

    /*************************************************************************************************/
    void call(WiconnectResult result, void *arg1, void *arg2)
    {
        if (_function)
        {
            ((_Callback)_function)(result, arg1, arg2);
        }
        else if (_object)
        {
            typedef void (*membercallerFunc)(void*, char*, WiconnectResult result, void *arg1, void *arg2);
            ((membercallerFunc)_membercaller)(_object, _member, result, arg1, arg2);
        }
    }

private:

    /*************************************************************************************************/
    template<typename T>
    static void membercaller(void *object, char *member, WiconnectResult result, void *arg1, void *arg2)
    {
        T* o = static_cast<T*>(object);
        void (T::*m)(WiconnectResult result, void *arg1, void *arg2);
        memcpy((char*)&m, member, sizeof(m));
        (o->*m)(result, arg1, arg2);
    }

};


}