## $Id: interfaces.py 7263 2011-12-04 12:59:40Z henrik $
##
## Copyright (C) 2012 Uli Fouquet & Henrik Bettermann
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##
"""Interfaces for special zope.schema-like fields.
"""
from zope.schema.interfaces import IObject

class IMultiValObject(IObject):
    """A field for objects with several values, usable in interfaces.

    Marker interface to distuingish plain zope.schema IObjects from
    multi-value objects. This way we can register different widgets
    for multi-value objects than for single-value objects.
    """