mgl_event_handle.h

[詳解]

// SPDX-License-Identifier: Zlib
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
 
#ifndef INCGUARD_MGL_EVENT_HANDLE_H_1608697773
#define INCGUARD_MGL_EVENT_HANDLE_H_1608697773
 
#include <mgl/event/mgl_event_types.h>
 
namespace MGL::Event
{
 
class Handle
{
public:
    Handle() noexcept;
    Handle(NotifyType type, CallbackFunction callback, void *callbackArg) noexcept;
    ~Handle() noexcept;
 
    void Set(NotifyType type, UniqueID id) noexcept;
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr NotifyType GetType() const noexcept
    {
        return _type;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr UniqueID GetUniqueID() const noexcept
    {
        return _id;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] constexpr bool IsValid() const noexcept
    {
        return ((_type < NotifyType::Reserve_Start) && (_id != 0));
    }
 
    void Unregister() noexcept;
 
    // コピー禁止
    Handle(const Handle &) = delete;
    Handle &operator=(const Handle &) = delete;
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr Handle(Handle &&other) noexcept
        : _type(other._type)
        , _id(other._id)
    {
        other._type = NotifyType::Reserve_Invalid;
        other._id = 0;
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    constexpr Handle &operator=(Handle &&other) noexcept
    {
        if (this != &other)
        {
            Unregister();
 
            _type = other._type;
            _id = other._id;
 
            other._type = NotifyType::Reserve_Invalid;
            other._id = 0;
        }
 
        return *this;
    }
 
private:
    NotifyType _type;
    UniqueID _id;
};
 
}    // namespace MGL::Event
#endif    // INCGUARD_MGL_EVENT_HANDLE_H_1608697773
 
// vim: et ts=4 sw=4 sts=4