lib/python/Tools/Event.py

   1
   2 class Event:
   3         def __init__(self, start = None, stop = None):
   4                 self.list = [ ]
   5                 self.start = start
   6                 self.stop = stop
   7
   8         def __call__(self, *args, **kwargs):
   9                 for x in self.list:
  10                         x(*args, **kwargs)
  11
  12         def listen(self, fnc):
  13                 was_empty = len(self.list) == 0
  14                 self.list.append(fnc)
  15                 if was_empty:
  16                         if self.start:
  17                                 self.start()
  18
  19         def unlisten(self, fnc):
  20                 self.list.remove(fnc)
  21                 if len(self.list) == 0:
  22                         if self.stop:
  23                                 self.stop()