1 # Copyright 2009 Shikhar Bhushan
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
17 def __init__(self, listeners=[]):
18 self._listeners = listeners
20 def has_listener(self, listener):
21 return (listener in self._listeners)
23 def add_listener(self, listener):
24 self._listeners.append(listener)
26 def remove_listener(self, listener):
27 self._listeners.remove(listener)
29 def dispatch(self, event, *args, **kwds):
31 func = getattr(Listener, event)
34 except AttributeError:
40 def reply(self, *args, **kwds):
41 raise NotImplementedError
44 def error(self, *args, **kwds):
45 raise NotImplementedError