wxPython/samples/wxPIA_book/Chapter-05/abstractmodel.py

   1 class AbstractModel(object):
   2
   3     def __init__(self):
   4         self.listeners = []
   5
   6     def addListener(self, listenerFunc):
   7         self.listeners.append(listenerFunc)
   8
   9     def removeListener(self, listenerFunc):
  10         self.listeners.remove(listenerFunc)
  11
  12     def update(self):
  13         for eachFunc in self.listeners:
  14             eachFunc(self)
  15