pylibcerebrum/NotifyList.py

   1
   2 def callback_method(func):
   3         def notify(self,*args,**kwargs):
   4                 rv = func(self,*args,**kwargs)
   5                 for callback in self.callbacks:
   6                         callback(self)
   7                 return rv
   8         return notify
   9
  10 #XXX due to lack of proper slice handling, this will *not* work with python < 3.0
  11 class NotifyList(list):
  12         extend = callback_method(list.extend)
  13         append = callback_method(list.append)
  14         remove = callback_method(list.remove)
  15         pop = callback_method(list.pop)
  16         __delitem__ = callback_method(list.__delitem__)
  17         __setitem__ = callback_method(list.__setitem__)
  18         __iadd__ = callback_method(list.__iadd__)
  19         __imul__ = callback_method(list.__imul__)
  20
  21         def __getitem__(self,item):
  22                 if isinstance(item,slice):
  23                         return self.__class__(list.__getitem__(self,item))
  24                 else:
  25                         return list.__getitem__(self,item)
  26
  27         def __init__(self,*args,callbacks=[]):
  28                 list.__init__(self,*args)
  29                 self.callbacks = callbacks
  30