#!python
# -*- mode: python; Encoding: utf-8; coding: utf-8 -*-
# Last updated: <2022/12/04 21:19:15 +0900>
"""
Test tkinter.Checkbutton

Windows10 x64 22H2 + Python 3.9.13 64bit
"""

import tkinter as tk
from functools import partial


CHK_LIST = [
    ["Apple", True],
    ["Orange", True],
    ["Lemon", False],
    ["Peach", False],
    ["Banana", True],
    ["strawberry", True],
]


class Application(tk.Frame):

    def __init__(self, master=None):
        super().__init__(master)

        self.master.title("Test Checkbutton")
        self.master.geometry("400x400")

        # create Label
        self.msg = tk.StringVar()
        self.msg.set("Message")
        lbl = tk.Label(self.master,
                       textvariable=self.msg,
                       borderwidth=2, relief="ridge",
                       font=("Arial", "18", "normal")
                       )

        # create Button
        button = tk.Button(self.master, text="Toggle", command=self.click_button)

        # create Checkbuttons
        self.cb_values = []
        self.cbs = []
        for i, d in enumerate(CHK_LIST):
            def_text, def_value = d

            # reserve Checkbutton value
            self.cb_values.append(tk.BooleanVar(value=def_value))

            # create Checkbutton
            cb = tk.Checkbutton(self.master, text=def_text,
                                variable=self.cb_values[i],
                                command=lambda i=i: self.click_cb(i),
                                # command = partial(self.click_cb, i),
                                # command = self.click_cb(i),
                                )
            self.cbs.append(cb)
            self.cbs[i].pack()

        lbl.pack()
        button.pack()

    def click_cb(self, n):
        """Click Checkbutton."""
        name = self.cbs[n].cget("text")
        value = self.cb_values[n].get()
        self.msg.set(f"{name} (id={n}) is {value}")

    def click_button(self):
        """Toggle Checkbuttons value."""
        for cb in self.cb_values:
            if True:
                v = cb.get()
                cb.set(not v)
            else:
                cb.toggle()


def main():
    root = tk.Tk()
    app = Application(master=root)
    app.mainloop()


if __name__ == '__main__':
    main()