diff -r 379261551578 -r 2c3711d4570b common/registerers.py
--- a/common/registerers.py	Wed Apr 22 16:56:19 2009 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,92 +0,0 @@
-"""This file contains some basic registerers required by application objects
-registry to handle registration at startup time.
-
-A registerer is responsible to tell if an object should be registered according
-to the application's schema or to already registered object
-
-:organization: Logilab
-:copyright: 2006-2009 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
-:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
-"""
-__docformat__ = "restructuredtext en"
-
-from cubicweb.vregistry import registerer, yes_registerer
-from cubicweb.cwvreg import use_interfaces
-
-class priority_registerer(registerer):
-    """systematically kick previous registered class and register the
-    wrapped class (based on the fact that directory containing vobjects
-    are loaded from the most generic to the most specific).
-
-    This is usually for templates or startup views where we want to
-    keep only the latest in the load path
-    """
-    def do_it_yourself(self, registered):
-        if registered:
-            if len(registered) > 1:
-                self.warning('priority_registerer found more than one registered objects '
-                             '(registerer monkey patch ?)')
-            for regobj in registered[:]:
-                self.kick(registered, regobj)
-        return self.vobject
-    
-    def remove_equivalents(self, registered):
-        for _obj in registered[:]:
-            if self.equivalent(_obj):
-                self.kick(registered, _obj)
-                break
-            
-    def remove_all_equivalents(self, registered):
-        for _obj in registered[:]:
-            if _obj is self.vobject:
-                continue
-            if self.equivalent(_obj):
-                self.kick(registered, _obj)
-
-    def equivalent(self, other):
-        raise NotImplementedError(self, self.vobject)
-    
-
-class accepts_registerer(priority_registerer):
-    """register according to the .accepts attribute of the wrapped
-    class, which should be a tuple refering some entity's types
-
-    * if no type is defined the application'schema, skip the wrapped
-      class
-    * if the class defines a requires attribute, each entity type defined
-      in the requires list must be in the schema
-    * if an object previously registered has equivalent .accepts
-      attribute, kick it out
-    * register
-    """
-    def do_it_yourself(self, registered):
-        # if object is accepting interface, we have register it now and
-        # remove it later if no object is implementing accepted interfaces
-        if use_interfaces(self.vobject):
-            return self.vobject
-        self.remove_equivalents(registered)
-        return self.vobject
-    
-    def equivalent(self, other):
-        if use_interfaces(self.vobject) != use_interfaces(other):
-            return False
-        if getattr(self.vobject, 'require_groups', ()) != getattr(other, 'require_groups', ()):
-            return False
-        try:
-            newaccepts = list(other.accepts)
-            for etype in self.vobject.accepts:
-                try:
-                    newaccepts.remove(etype)
-                except ValueError:
-                    continue
-            if newaccepts:
-                other.accepts = tuple(newaccepts)
-                return False
-            return True
-        except AttributeError:
-            return False
-
-
-__all__ = [cls.__name__ for cls in globals().values()
-           if isinstance(cls, type) and issubclass(cls, registerer)
-           and not cls is registerer]