StatusIcon with threaded loop: loop does not loop - multithreading

Question

I have created a simple status icon.
Its purpose is to check the existence of files in a given time interval.
The status icon shows, and the thread is started.
However, the loop does not loop: it enters the loop, but on event.wait it halts, and never continues.
I've tried to replace with time.sleep(5), but that had the same result.
I've searched anywhere, but I couldn't find an answer.
What am I missing?
#! /usr/bin/env python3
#-*- coding: utf-8 -*-
from gi.repository import Gtk
import threading
class CheckStatus(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.event = threading.Event()
def run(self):
cnt = 0
while not self.event.is_set():
cnt += 1
print((">>> check %d" % cnt)) # This shows just once
self.event.wait(5)
print(">>> done")
def stop(self):
self.event.set()
class MyStatusIcon(object):
def __init__(self):
self.statusIcon = Gtk.StatusIcon()
self.statusIcon.set_from_stock(Gtk.STOCK_ABOUT)
# Build status icon menu
menu = Gtk.Menu()
menuQuit = Gtk.MenuItem("Quit")
menuQuit.connect('activate', self.quit_tray)
menu.append(menuQuit)
self.statusIcon.connect('popup-menu', self.popup_menu, menu)
# Start thread
self.check = CheckStatus()
self.check.start()
def popup_menu(self, widget, button, time, data):
data.show_all()
data.popup(None, None, None, None, button, time)
def quit_tray(self, widget):
# Stop the thread and quit
self.check.stop()
self.check.join()
Gtk.main_quit()
if __name__ == '__main__':
# Create an instance of our GTK application
try:
MyStatusIcon()
Gtk.main()
except:
pass
[EDIT 1]
I've replaced the while loop with a counter loop (while cnt < 10), although this didn't change the behavior, it showed the printed counter every 5 seconds as soon as I quit the status icon.
It seems that the thread is waiting for an event from the status icon.
[EDIT 2]
I needed to look at this from a different angle, and wondered if GObject.timeout_add could solve this issue...well, it did, but I don't know if it's the most elegant way to do so.
#! /usr/bin/env python3
#-*- coding: utf-8 -*-
from gi.repository import Gtk, GObject
class MyStatusIcon(object):
def __init__(self):
self.quit = False
self.counter = 0
self.service = GObject.timeout_add(5000, self.checkStatus)
self.statusIcon = Gtk.StatusIcon()
self.statusIcon.set_from_stock(Gtk.STOCK_ABOUT)
# Build status icon menu
menu = Gtk.Menu()
menuQuit = Gtk.MenuItem("Quit")
menuQuit.connect('activate', self.quit_tray)
menu.append(menuQuit)
self.statusIcon.connect('popup-menu', self.popup_menu, menu)
def checkStatus(self):
self.counter += 1
if not self.quit:
print((">>> check %d" % self.counter))
return True
print("Done")
return False
def popup_menu(self, widget, button, time, data):
data.show_all()
data.popup(None, None, None, None, button, time)
def quit_tray(self, widget):
# Stop the thread and quit
self.quit = True
Gtk.main_quit()
if __name__ == '__main__':
# Create an instance of our GTK application
try:
MyStatusIcon()
Gtk.main()
except:
pass