YiSignalHandlerRawConnection.h

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// © You i Labs Inc. 2000-2017. All rights reserved.
#ifndef _YI_SIGNAL_HANDLER_RAW_CONNECTION_H_
#define _YI_SIGNAL_HANDLER_RAW_CONNECTION_H_

#ifndef _YI_SIGNAL_H_
#error "Do not include YiSignalHandlerRawConnection.h directly. Include YiSignal.h instead."
#endif

#include "YiSignalBaseConnection.h"

// non-specialized concrete connection type (not defined -- only specializations are used)
template<typename SlotHandlerType, typename SlotReturnType, typename SlotTypes, typename... SignalTypes>
class CYISignalHandlerRawConnection;

template<class SlotHandlerType, typename SlotReturnType, typename... SlotTypes, typename... SignalTypes>
class CYISignalHandlerRawConnection<SlotHandlerType, SlotReturnType, YiSlotTypesContainer<SlotTypes...>, SignalTypes...> : public CYISignalBaseConnection<SignalTypes...>
{
public:
    typedef SlotReturnType (SlotHandlerType::*const SlotType)(SlotTypes...);

    CYISignalHandlerRawConnection(CYISignalHandler &signalHandler, const SlotType &slot, YI_CONNECTION_TYPE connectionType, const CYISignalConnectionID &connectionID = CYISignalConnectionID::CreateUnique()) :
        CYISignalBaseConnection<SignalTypes...>(&signalHandler, connectionType, connectionID),
        m_pSlot(slot)
    {
    }

    virtual std::unique_ptr<CYISignalAbstractConnection> Clone(CYISignalHandler *pSignalHandler, YI_CONNECTION_TYPE eConnectionType) const override
    {
        return std::make_unique<CYISignalHandlerRawConnection<SlotHandlerType, SlotReturnType, YiSlotTypesContainer<SlotTypes...>, SignalTypes...>>(*pSignalHandler, m_pSlot, eConnectionType, this->GetConnectionID());
    }

    virtual void Emit(const SignalTypes &... args) override
    {
        EmitInternal(args...);
    }

    inline bool IsConnectionTo(const SlotType &slot) const
    {
        return slot == m_pSlot;
    }

protected:
    const SlotType m_pSlot;

private:
    template<typename... ExtraTypes>
    inline void EmitInternal(const SlotTypes &... slotArgs, const ExtraTypes &...)
    {
        (static_cast<SlotHandlerType &>(*CYISignalAbstractConnection::m_pSignalHandler).*m_pSlot)(slotArgs...);
    }
};

#endif /* _YI_SIGNAL_HANDLER_RAW_CONNECTION_H_ */