Initial revision
diff --git a/Lib/idlelib/Delegator.py b/Lib/idlelib/Delegator.py
new file mode 100644
index 0000000..3665247
--- /dev/null
+++ b/Lib/idlelib/Delegator.py
@@ -0,0 +1,34 @@
+
+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