todo-app-class.py

import pglet
from pglet import Stack, Textbox, Button, Checkbox


class TodoApp:
    def __init__(self):
        self.new_task = Textbox(placeholder="Whats needs to be done?", width="100%")
        self.tasks_view = Stack()

        # application's root control (i.e. "view") containing all other controls
        self.view = Stack(
            width="70%",
            controls=[
                Stack(
                    horizontal=True,
                    on_submit=self.add_clicked,
                    controls=[self.new_task, Button("Add", on_click=self.add_clicked)],
                ),
                self.tasks_view,
            ],
        )

    def add_clicked(self, e):
        self.tasks_view.controls.append(Checkbox(label=self.new_task.value))
        self.tasks_view.update()


def main(page):
    page.title = "ToDo App"
    page.horizontal_align = "center"
    page.update()

    # create application instance
    app = TodoApp()

    # add application's root control to the page
    page.add(app.view)


pglet.app("todo-app", target=main)