33 lines
831 B
Python
33 lines
831 B
Python
class Delegator:
|
|
|
|
# The cache is only used to be able to change delegates!
|
|
|
|
def __init__(self, delegate=None):
|
|
self.delegate = delegate
|
|
self.__cache = {}
|
|
|
|
def __getattr__(self, name):
|
|
attr = getattr(self.delegate, name) # May raise AttributeError
|
|
setattr(self, name, attr)
|
|
self.__cache[name] = attr
|
|
return attr
|
|
|
|
def resetcache(self):
|
|
for key in self.__cache.keys():
|
|
try:
|
|
delattr(self, key)
|
|
except AttributeError:
|
|
pass
|
|
self.__cache.clear()
|
|
|
|
def cachereport(self):
|
|
keys = self.__cache.keys()
|
|
keys.sort()
|
|
print keys
|
|
|
|
def setdelegate(self, delegate):
|
|
self.resetcache()
|
|
self.delegate = delegate
|
|
|
|
def getdelegate(self):
|
|
return self.delegate
|