def check(cls):
"""Check if it's time to show a notification."""
if not cls.interval:
return
if TimeDisplay.get_time_min() >= cls.next_at:
return True
return False
def notify(cls, hours, minutes, seconds):
"""Display notification."""
if not cls.check():
return
cls.last_at = TimeDisplay.get_time_min()
activity = Notes.get_text()
if activity:
message = random.choice(
cls.prompt_with_note).substitute(task=activity)
else:
message = random.choice(cls.prompt_no_note)
# Show the notification
SysTray.popup(message)
# Determine when next notification should appear
cls.calculate_next()