housekeeping - steps to get rid of plone.app.widgets

plone/app/z3cform/configure.zcml

@@ -221,4 +221,10 @@
            for="z3c.form.interfaces.ITextWidget
                 plone.app.z3cform.interfaces.IPloneFormLayer"/>
 
+  <utility
+    name="ZPublisher.HTTPRequest.FileUpload"
+    provides="plone.namedfile.interfaces.IStorage"
+    factory=".factories.Zope2FileUploadStorable"
+  />
+
 </configure>

plone/app/z3cform/interfaces.py

@@ -4,6 +4,7 @@
 from z3c.form.interfaces import ISelectWidget as IBaseSelectWidget
 from z3c.form.interfaces import ISingleCheckBoxWidget
 from z3c.form.interfaces import ITextWidget
+from zope.interface import Interface
 from zope.schema.interfaces import IDate
 from zope.schema.interfaces import IDatetime
 
@@ -12,6 +13,19 @@ class IPloneFormLayer(IFormLayer):
     """Request layer installed via browserlayer.xml"""
 
 
+class IFieldPermissionChecker(Interface):
+    """Adapter factory for checking whether a user has permission to
+    edit a specific field on a content object.
+    """
+
+    def validate(field_name, vocabulary_name=None):
+        """Returns True if the current user has permission to edit the
+        `field_name` field.  Returns False if the user does not have
+        permission.  Raises and AttributeError if the field cannot be
+        found.
+        """
+
+
 class IDateField(IDate):
     """Marker interface for the DateField."""