import tkinter
from abc import abstractmethod, ABC
from typing import Type


ModConfig: any


class InvalidPreviewWindowName(Exception):
    def __init__(self, name: str):
        super().__init__(f"Error : Type of preview window '{name}' not found.")


class AbstractPreviewWindow(tkinter.Toplevel, ABC):
    """
    Represent a window that allow a preview of the result of a value that can be in a settings entry
    """

    name: str

    @abstractmethod
    def __init__(self, mod_config: "ModConfig", template_variable: tkinter.StringVar = None):
        super().__init__()
        ...


def get_preview_window_class(name: str) -> Type[AbstractPreviewWindow]:
    """
    Return the windows class object from its name
    :param name: name of the window class
    :return: the window class object
    """
    for window_class in filter(lambda cls: cls.name == name, AbstractPreviewWindow.__subclasses__()):
        return window_class
    raise InvalidPreviewWindowName(name)


from source.gui.preview import track_formatting, track_selecting