diff -r 16804a4f555d -r 83b0bf9b0a51 web/views/cwproperties.py
--- a/web/views/cwproperties.py	Tue Jan 19 10:42:47 2010 +0100
+++ b/web/views/cwproperties.py	Tue Jan 19 10:43:48 2010 +0100
@@ -19,7 +19,7 @@
 from cubicweb.web import uicfg, stdmsgs
 from cubicweb.web.form import FormViewMixIn
 from cubicweb.web.formfields import FIELDS, StringField
-from cubicweb.web.formwidgets import Select, TextInput, Button, SubmitButton
+from cubicweb.web.formwidgets import Select, TextInput, Button, SubmitButton, FieldWidget
 from cubicweb.web.views import primary, formrenderers
 
 
@@ -258,7 +258,7 @@
 
 # cwproperty form objects ######################################################
 
-class PlaceHolderWidget(object):
+class PlaceHolderWidget(FieldWidget):
 
     def render(self, form, field, renderer):
         domid = field.dom_id(form)
@@ -268,7 +268,7 @@
             domid, domid, form._cw._('select a key first'))
 
 
-class NotEditableWidget(object):
+class NotEditableWidget(FieldWidget):
     def __init__(self, value, msg=None):
         self.value = value
         self.msg = msg