# _*_ coding: utf-8 _*_
class CallbackBase:
def __init__(
self):
self.__callbackMap = {}
for k
in (
getattr(
self, x)
for x
in dir(
self)):
if hasattr(k
, "bind_to_event"):
self.__callbackMap.setdefault(k.bind_to_event
, []).append(k)
elif hasattr(k
, "bind_to_event_list"):
for j
in k.bind_to_event_list:
self.__callbackMap.setdefault(j
, []).append(k)
@staticmethod
def callback(event):
def f(g
, ev=event):
g.bind_to_event = ev
return g
return f
@staticmethod
def callbacklist(eventlist):
def f(g
, evl=eventlist):
g.bind_to_event_list = evl
return g
return f
def dispatch(
self, event):
l =
self.__callbackMap[event]
f =
lambda *args
, **kargs: \
map(
lambda x: x(*args
, **kargs)
, l)
return f
class MyClass(CallbackBase):
EVENT1 =
1
EVENT2 =
2
@
CallbackBase.callback(EVENT1)
def handler1(
self, param=None):
return None
@
CallbackBase.callbacklist([EVENT1
, EVENT2])
def handler2(
self, param=
None):
print(
"handler2 with param: %s" %
str(param))
return None
def run(
self, event
, param=
None):
self.dispatch(event)(param)
if __name__ ==
"__main__":
a = MyClass()
a.run(MyClass.EVENT1
, 'mandarina')
a.run(MyClass.EVENT2
, 'naranja')
