kev/Drawer/Module/GeoSigmaDraw/ScopedConnection.h

#pragma once

#include <functional>
#include <utility>

class ScopedConnection
{
public:
    ScopedConnection() = default;

    explicit ScopedConnection(std::function<void()> disconnectFunc)
        : m_disconnectFunc(std::move(disconnectFunc))
    {
    }

    ScopedConnection(const ScopedConnection&) = delete;
    ScopedConnection& operator=(const ScopedConnection&) = delete;

    ScopedConnection(ScopedConnection&& other) noexcept
        : m_disconnectFunc(std::move(other.m_disconnectFunc))
    {
    }

    ScopedConnection& operator=(ScopedConnection&& other) noexcept
    {
        if (this != &other)
        {
            Disconnect();
            m_disconnectFunc = std::move(other.m_disconnectFunc);
        }
        return *this;
    }

    ~ScopedConnection()
    {
        Disconnect();
    }

    void Disconnect()
    {
        if (m_disconnectFunc)
        {
            m_disconnectFunc();
            m_disconnectFunc = nullptr;
        }
    }

    bool IsConnected() const
    {
        return static_cast<bool>(m_disconnectFunc);
    }

private:
    std::function<void()> m_disconnectFunc;
};