#!/usr/bin/env python3
"""Controlled GTK progress fixture, with keyboard focus on a separate button."""
import sys
import gi

gi.require_version("Gtk", "3.0")
from gi.repository import GLib, Gtk


window = Gtk.Window(title="Progress probe")
window.set_default_size(400, 200)
box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL, spacing=12)
window.add(box)
progress = Gtk.ProgressBar()
progress.get_accessible().set_name("Download")
box.pack_start(progress, False, False, 0)
button = Gtk.Button(label="Keep focus")
box.pack_start(button, False, False, 0)
other = Gtk.Window(title="Other probe")
other.set_default_size(400, 200)
other.move(450, 0)
other.add(Gtk.Entry())
window.show_all()
other.show_all()
window.present()
button.grab_focus()


def command_received(source, condition):
    line = sys.stdin.readline().strip()
    if not line:
        Gtk.main_quit()
        return False
    if line.startswith("hide "):
        progress.hide()
        progress.set_fraction(float(line.split()[1]))
    elif line == "show":
        progress.show()
    else:
        progress.set_fraction(float(line))
    return True


GLib.io_add_watch(sys.stdin, GLib.IO_IN | GLib.IO_HUP, command_received)
GLib.idle_add(lambda: print("ready", flush=True))
Gtk.main()