diff -r a64f48dd5fe4 -r 9ab2b4c74baf mixins.py
--- a/mixins.py	Thu May 20 20:47:13 2010 +0200
+++ b/mixins.py	Thu May 20 20:47:55 2010 +0200
@@ -21,9 +21,10 @@
 from itertools import chain
 
 from logilab.common.decorators import cached
+from logilab.common.deprecation import deprecated, class_deprecated
 
 from cubicweb.selectors import implements
-from cubicweb.interfaces import IEmailable, ITree
+from cubicweb.interfaces import ITree
 
 
 class TreeMixIn(object):
@@ -33,6 +34,9 @@
     tree_attribute, parent_target and children_target class attribute to
     benefit from this default implementation
     """
+    __metaclass__ = class_deprecated
+    __deprecation_warning__ = '[3.9] TreeMixIn is deprecated, use/override ITreeAdapter instead'
+
     tree_attribute = None
     # XXX misnamed
     parent_target = 'subject'
@@ -117,16 +121,6 @@
             return chain([self], _uptoroot(self))
         return _uptoroot(self)
 
-    def notification_references(self, view):
-        """used to control References field of email send on notification
-        for this entity. `view` is the notification view.
-
-        Should return a list of eids which can be used to generate message ids
-        of previously sent email
-        """
-        return self.path()[:-1]
-
-
     ## ITree interface ########################################################
     def parent(self):
         """return the parent entity if any, else None (e.g. if we are on the
@@ -171,8 +165,7 @@
     NOTE: The default implementation is based on the
     primary_email / use_email scheme
     """
-    __implements__ = (IEmailable,)
-
+    @deprecated("[3.9] use entity.cw_adapt_to('IEmailable').get_email()")
     def get_email(self):
         if getattr(self, 'primary_email', None):
             return self.primary_email[0].address
@@ -180,28 +173,6 @@
             return self.use_email[0].address
         return None
 
-    @classmethod
-    def allowed_massmail_keys(cls):
-        """returns a set of allowed email substitution keys
-
-        The default is to return the entity's attribute list but an
-        entity class might override this method to allow extra keys.
-        For instance, the Person class might want to return a `companyname`
-        key.
-        """
-        return set(rschema.type
-                   for rschema, attrtype in cls.e_schema.attribute_definitions()
-                   if attrtype.type not in ('Password', 'Bytes'))
-
-    def as_email_context(self):
-        """returns the dictionary as used by the sendmail controller to
-        build email bodies.
-
-        NOTE: the dictionary keys should match the list returned by the
-        `allowed_massmail_keys` method.
-        """
-        return dict( (attr, getattr(self, attr)) for attr in self.allowed_massmail_keys() )
-
 
 """pluggable mixins system: plug classes registered in MI_REL_TRIGGERS on entity
 classes which have the relation described by the dict's key.
@@ -216,26 +187,14 @@
 
 
 
-def _done_init(done, view, row, col):
-    """handle an infinite recursion safety belt"""
-    if done is None:
-        done = set()
-    entity = view.cw_rset.get_entity(row, col)
-    if entity.eid in done:
-        msg = entity._cw._('loop in %(rel)s relation (%(eid)s)') % {
-            'rel': entity.tree_attribute,
-            'eid': entity.eid
-            }
-        return None, msg
-    done.add(entity.eid)
-    return done, entity
-
-
 class TreeViewMixIn(object):
     """a recursive tree view"""
+    __metaclass__ = class_deprecated
+    __deprecation_warning__ = '[3.9] TreeViewMixIn is deprecated, use/override BaseTreeView instead'
+
     __regid__ = 'tree'
+    __select__ = implements(ITree)
     item_vid = 'treeitem'
-    __select__ = implements(ITree)
 
     def call(self, done=None, **kwargs):
         if done is None:
@@ -262,6 +221,8 @@
 
 class TreePathMixIn(object):
     """a recursive path view"""
+    __metaclass__ = class_deprecated
+    __deprecation_warning__ = '[3.9] TreePathMixIn is deprecated, use/override TreePathView instead'
     __regid__ = 'path'
     item_vid = 'oneline'
     separator = u' > '
@@ -286,6 +247,8 @@
 
 class ProgressMixIn(object):
     """provide a default implementations for IProgress interface methods"""
+    __metaclass__ = class_deprecated
+    __deprecation_warning__ = '[3.9] ProgressMixIn is deprecated, use/override IProgressAdapter instead'
 
     @property
     def cost(self):