owners are *real* objects now

tiramisu/setting.py

@@ -42,6 +42,10 @@ class GroupModule(_const):
         *normal* means : groups that are not master
         """
         pass
+    class DefaultGroupName(GroupName):
+        """groups that are default (typically 'default')"""
+        pass
+
     class MasterGroupName(GroupName):
         """allowed normal group (OptionDescription) names
         *master* means : groups that have the 'master' attribute set
@@ -54,16 +58,44 @@ def populate_groups():
     "populates the available groups in the appropriate namespaces"
     _available_group_names = ('default', 'family', 'group')
     _available_groups_with_a_master = ('group', )
+    _available_default_groups = ('default', )
     # populates normal or master groups
     for grp in _available_group_names:
         if grp in _available_groups_with_a_master:
             setattr(groups, grp, groups.MasterGroupName(grp))
+        elif grp in _available_default_groups:
+            setattr(groups, grp, groups.DefaultGroupName(grp))
         else:
             setattr(groups, grp, groups.GroupName(grp))
 # names are in the module now
 populate_groups()
 # ____________________________________________________________
+class OwnerModule(_const):
+    """emulates a module to manage unique owner names.
 
+    owners are living in `Config._cfgimpl_value_owners`
+    """
+    class Owner(str):
+        """allowed owner names
+        """
+        pass
+    class DefaultOwner(Owner):
+        """groups that are default (typically 'default')"""
+        pass
+# setting.owners (emulates a module)
+owners = OwnerModule()
+
+def populate_owners():
+    """populates the available owners in the appropriate namespaces
+
+    - 'user' is the generic is the generic owner.
+    - 'default' is the config owner after init time
+    """
+    setattr(owners, 'default', owners.DefaultOwner('default'))
+    setattr(owners,'user', owners.Owner('user'))
+# names are in the module now
+populate_owners()
+#____________________________________________________________
 class Setting():
     "``Config()``'s configuration options"
     # properties attribute: the name of a property enables this property
@@ -75,8 +107,6 @@ class Setting():
     frozen = True
     # enables validation function for options if set
     validator = False
-    # generic owner. 'default' is the general config owner after init time
-    owner = 'user'
     # ____________________________________________________________
     # properties methods
     def has_properties(self):