Fix up zope.app after moving zope.app.filerepresentation to zope.file…

…representation

configure.zcml

@@ -14,13 +14,13 @@
 
   <adapter
       for=".interfaces.IReadContainer"
-      provides="zope.app.filerepresentation.interfaces.IReadDirectory"
+      provides="zope.filerepresentation.interfaces.IReadDirectory"
       factory=".directory.noop"
       />
 
   <adapter
       for=".interfaces.IWriteContainer"
-      provides="zope.app.filerepresentation.interfaces.IWriteDirectory"
+      provides="zope.filerepresentation.interfaces.IWriteDirectory"
       factory=".directory.noop"
       />
 

directory.py

@@ -0,0 +1,62 @@
+##############################################################################
+# Copyright (c) 2003 Zope Corporation and Contributors.
+# All Rights Reserved.
+# 
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+"""File-system representation adapters for containers
+
+This module includes two adapters (adapter factories, really) for
+providing a file-system representation for containers:
+
+`noop`
+  Factory that "adapts" `IContainer` to `IWriteDirectory`.
+  This is a lie, since it just returns the original object.
+
+`Cloner`
+  An `IDirectoryFactory` adapter that just clones the original object.
+
+$Id$
+"""
+__docformat__ = 'restructuredtext'
+
+import zope.filerepresentation.interfaces
+from zope.security.proxy import removeSecurityProxy
+from zope.interface import implements
+
+def noop(container):
+    """Adapt an `IContainer` to an `IWriteDirectory` by just returning it
+
+    This "works" because `IContainer` and `IWriteDirectory` have the same
+    methods, however, the output doesn't actually implement `IWriteDirectory`.
+    """
+    return container
+
+
+class Cloner(object):
+    """`IContainer` to `IDirectoryFactory` adapter that clones
+
+    This adapter provides a factory that creates a new empty container
+    of the same class as it's context.
+    """
+
+    implements(zope.filerepresentation.interfaces.IDirectoryFactory)
+
+    def __init__(self, context):
+        self.context = context
+
+    def __call__(self, name):
+
+        # We remove the security proxy so we can actually call the
+        # class and return an unproxied new object.  (We can't use a
+        # trusted adapter, because the result must be unproxied.)  By
+        # registering this adapter, one effectively gives permission
+        # to clone the class.  Don't use this for classes that have
+        # exciting side effects as a result of instantiation. :)
+
+        return removeSecurityProxy(self.context).__class__()