--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_content/features/review/interfaces.py	Fri Nov 10 11:46:27 2017 +0100
@@ -0,0 +1,101 @@
+#
+# Copyright (c) 2008-2015 Thierry Florac <tflorac AT ulthar.net>
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+
+__docformat__ = 'restructuredtext'
+
+
+# import standard library
+
+# import interfaces
+from zope.annotation.interfaces import IAttributeAnnotatable
+from zope.container.interfaces import IContainer, IContained
+from zope.interface.interfaces import IObjectEvent, ObjectEvent
+
+# import packages
+from pyams_security.schema import Principal, PrincipalsSet
+from zope.container.constraints import contains, containers
+from zope.interface import implementer, Interface, Attribute
+from zope.schema import Text, Choice, Datetime
+
+from pyams_content import _
+
+
+COMMENT_TYPES = {'request': _("Review request"),
+                 'comment': _("Reviewer comment")}
+
+
+class ICommentAddedEvent(IObjectEvent):
+    """Comment added event interface"""
+
+    comment = Attribute("New comment")
+
+
+@implementer(ICommentAddedEvent)
+class CommentAddedEvent(ObjectEvent):
+    """Comment added event"""
+
+    def __init__(self, object, comment):
+        super(CommentAddedEvent, self).__init__(object)
+        self.comment = comment
+
+
+class IReviewComment(IContained, IAttributeAnnotatable):
+    """Review comment interface"""
+
+    containers('.IReviewComments')
+
+    owner = Principal(title=_("Comment writer"),
+                      required=True)
+
+    comment = Text(title=_("Comment body"),
+                   required=True)
+
+    comment_type = Choice(title=_("Comment type"),
+                          values=COMMENT_TYPES.keys(),
+                          required=True,
+                          default='comment')
+
+    creation_date = Datetime(title=_("Creation date"),
+                             required=False)
+
+
+REVIEW_COMMENTS_ANNOTATION_KEY = 'pyams_content.review_comments'
+
+
+class IReviewComments(IContainer):
+    """Review comments container interface"""
+
+    contains(IReviewComment)
+
+    reviewers = PrincipalsSet(title=_("Reviewers list"),
+                              description=_("List of principals which reviewed the comment"),
+                              required=False)
+
+    def clear(self):
+        """Remove all comments"""
+
+    def add_comment(self, comment):
+        """Add given comment to list"""
+
+
+class IReviewManager(Interface):
+    """Content review interface"""
+
+    def ask_review(self, reviewers, comment, notify=True):
+        """Ask for content review"""
+
+
+class IReviewTarget(Interface):
+    """Review target marker interface
+
+    This interface is used to mark contents which can handle review.
+    """