MenuItem.h

#pragma once
 
#include "Delegate.h"
#include "ITag.h"
#include <Windows.h>
#include <initializer_list>
#include <memory>
#include <string>
#include <vector>
 
namespace sw
{
    class MenuItem; // 向前声明
 
    using MenuItemCommand = Action<MenuItem &>;
 
    class MenuItem : public ITag
    {
    public:
        uint64_t tag;
 
        std::wstring text;
 
        MenuItemCommand command;
 
        std::vector<std::shared_ptr<MenuItem>> subItems{};
 
    public:
        MenuItem(const std::wstring &text);
 
        MenuItem(const std::wstring &text, const MenuItemCommand &command);
 
        MenuItem(const std::wstring &text, std::initializer_list<MenuItem> subItems);
 
        MenuItem(uint64_t tag, const std::wstring &text);
 
        MenuItem(uint64_t tag, const std::wstring &text, const MenuItemCommand &command);
 
        template <typename T>
        MenuItem(const std::wstring &text, T &obj, void (T::*handler)(MenuItem &))
            : MenuItem(0, text, obj, handler)
        {
        }
 
        template <typename T>
        MenuItem(uint64_t tag, const std::wstring &text, T &obj, void (T::*handler)(MenuItem &))
            : MenuItem(tag, text, MenuItemCommand(obj, handler))
        {
        }
 
    public:
        bool IsSeparator() const;
 
        void CallCommand();
 
        virtual uint64_t GetTag() const override;
 
        virtual void SetTag(uint64_t tag) override;
    };
}