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Text File  |  2009-03-13  |  606b  |  27 lines
  1.  
  2. from twisted.internet.defer import Deferred
  3. from twisted.python.failure import Failure
  4.  
  5. class PendingEvent(object):
  6.     def __init__(self):
  7.         self.listeners = []
  8.  
  9.     def deferred(self):
  10.         d = Deferred()
  11.         self.listeners.append(d)
  12.         return d
  13.  
  14.     def callback(self, result):
  15.         l = self.listeners
  16.         self.listeners = []
  17.         for d in l:
  18.             d.callback(result)
  19.  
  20.     def errback(self, result=None):
  21.         if result is None:
  22.             result = Failure()
  23.         l = self.listeners
  24.         self.listeners = []
  25.         for d in l:
  26.             d.errback(result)
  27.