cpython/Lib/idlelib/Delegator.py

26 lines
665 B
Python
Raw Normal View History

2000-08-14 22:13:23 -03:00
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:
2000-08-14 22:13:23 -03:00
try:
delattr(self, key)
except AttributeError:
pass
self.__cache.clear()
def setdelegate(self, delegate):
self.resetcache()
self.delegate = delegate