from __future__ import annotations

from collections.abc import Callable
from typing import Any, Union


class Menu:
    def __init__(
        self, title: str, items: list[Union[Menu, MenuAction, MenuSeparator]] = []
    ) -> None:
        """
        Args:
            title: the menu or submenu title
            items: the contents of the menu (can consist of Menu, MenuAction, or MenuSeparator instances)
        """
        self.title = title
        self.items = items


class MenuAction:
    def __init__(self, title: str, function: Callable[[], Any]) -> None:
        self.title = title
        self.function = function
        # TODO: support platform-agnostic shortcut
        # self.shortcut = shortcut


class MenuSeparator:
    pass