Marker interface for callable opaque items with manage_* hooks.
$Id: IOpaqueItems.py 36457 2004-08-12 15:07:44Z jens $
Interface for callable opaque items.
Opaque items are subelements that are contained using something that is not an ObjectManager.
On add, copy, move and delete operations a marked opaque items
manage_afterAdd, manage_afterClone and manage_beforeDelete hooks
get called if available. Unavailable hooks do not throw exceptions.
Return the opaque items value.
Return the opaque item and assign it to obj as attr with id.
Return the id of the opaque item.
CMF specific events upon copying, renaming and deletion.
After add event hook.
Before delete event hook.
After clone event hook.