General overview

In a curses wrapper, I have a main stdscr. If I press : then I enter in a specific mode where I can type text inside a curses.textpad.Textbox.

In my following MWE it work fine until this state. But the goal now is to break the the typing mode if the user type ESC.

Minimal working example

import curses
import curses.textpad

def enteringExMode(stdscr):
    curses.curs_set(1)  # Show cursor

    editwin = curses.newwin(0, 0, 0, 0)
    editwin.clear()

    # Edition in textzone
    tb = curses.textpad.Textbox(editwin)
    tb.edit()

    # Get the writen text
    user_text = tb.gather()


def main(stdscr):
    while True:
        stdscr.clear()
        key = stdscr.get_wch()
        if key == ":":
            enteringExMode(stdscr)

curses.wrapper(main)

The question

So how to make the typing mode take end if the user type ESC?