- Moved the declaration of ``IOrderedContainer.updateOrder`` to a new, basic

  ``IOrdered`` interface and let ``IOrderedContainer`` inherit it. This allows
  easier reuse of the declaration.

CHANGES.txt

@@ -5,7 +5,9 @@ CHANGES
 3.7.3 (unreleased)
 ------------------
 
-- ...
+- Moved the declaration of ``IOrderedContainer.updateOrder``  to a new, basic
+  ``IOrdered`` interface and let ``IOrderedContainer`` inherit it. This allows
+  easier reuse of the declaration.
 
 3.7.2 (2009-03-12)
 ------------------

src/zope/container/interfaces.py

@@ -177,8 +177,9 @@ class IBTreeContainer(IContainer):
         """
 
 
-class IOrderedContainer(IContainer):
-    """Containers whose contents are maintained in order."""
+class IOrdered(Interface):
+    """Objects whose contents are maintained in order."""
+
 
     def updateOrder(order):
         """Revise the order of keys, replacing the current ordering.
@@ -193,6 +194,11 @@ class IOrderedContainer(IContainer):
         """
 
 
+class IOrderedContainer(IOrdered, IContainer):
+    """Containers whose contents are maintained in order."""
+
+
+
 class IContainerNamesContainer(IContainer):
     """Containers that always choose names for their items."""