Chain event in custom control

[marc-svg]

Hi,
Is it the good way (code below) if I want to chain on_change event on custom TextField.

import flet as ft

class TextField(ft.TextField):
    def __init__(self, *args, **kwargs):
        # save instance on_change
        self._on_change = kwargs.get('on_change')
        super().__init__(*args, **kwargs)

        # redefine class on_change
        self.on_change = self.__cls_on_change

    def __cls_on_change(self, e):
        # here do what you have to do in class TextField
        # ...
        print("on_change from class", e.data)

        # call instance on_change if defined
        if self._on_change:
            self._on_change(e)


def main(page: ft.Page) -> None:
    page.window.width = 500
    page.window.height = 300
    page.window.center()

    def on_change(e):
        print("on_change from instance", e.data)

    page.add(TextField(on_change=on_change))

ft.app(target=main)

Best regards