Added support for ExtensionClass to the Interfaces package.

lib/python/Interface/Util.py

-from iclass import Interface, Class, ClassType, Base, assertTypeImplements, _typeImplements #uuh..
+
+from iclass import Interface, Class, ClassTypes, Base, \
+     assertTypeImplements, _typeImplements #uuh..
 from types import FunctionType
 
+
 def impliedInterface(klass, __name__=None, __doc__=None):
     """Create an interface object from a class
 
@@ -26,7 +29,7 @@ def objectImplements(object, tiget=_typeImplements.get):
     r=[]
 
     t=type(object)
-    if t is ClassType:
+    if t in ClassTypes:
         if hasattr(object, '__class_implements__'):
             implements=object.__class_implements__
         else:
@@ -48,7 +51,7 @@ def instancesOfObjectImplements(klass, tiget=_typeImplements.get):
     """
     r=[]
 
-    if type(klass) is ClassType:
+    if type(klass) in ClassTypes:
         if hasattr(klass, '__implements__'):
             implements=klass.__implements__
         else: return r

lib/python/Interface/iclass.py

@@ -15,6 +15,15 @@ from types import FunctionType, ClassType
 import Exceptions
 from InterfaceBase import InterfaceBase
 
+try:
+    from ExtensionClass import Base
+except ImportError:
+    ClassTypes = (ClassType,)
+else:
+    class dummy (Base): pass
+    ClassTypes = (type(dummy), ClassType)
+
+
 _typeImplements={}
 
 class Interface(InterfaceBase):
@@ -68,7 +77,7 @@ class Interface(InterfaceBase):
         """Does the given object implement the interface?
         """
         t=type(object)
-        if t is ClassType:
+        if t in ClassTypes:
             if hasattr(object, '__class_implements__'):
                 implements=object.__class_implements__
             else: implements=Class
@@ -87,7 +96,7 @@ class Interface(InterfaceBase):
                                  tiget=_typeImplements.get):
         """Do instances of the given class implement the interface?
         """
-        if type(klass) is ClassType:
+        if type(klass) in ClassTypes:
             if hasattr(klass, '__implements__'):
                 implements=klass.__implements__
             else: return 0