Reflect recent changes on TextDocument.

EmailDocument must not return text_content if data is empty
because EmailDocument is not base_convertable, data
and text_content might not be related each other.


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@41850 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/EmailDocument.py

@@ -743,3 +743,8 @@ class EmailDocument(TextDocument):
       XXX - Needs to be unified with Event methods
     """
     self.MailHost.send(message)
+
+  # Because TextDocument is base_convertable and not EmailDocument.
+  # getData must be implemented like File.getData is.
+  security.declareProtected(Permissions.AccessContentsInformation, 'getData')
+  getData = File.getData