# copyright 2015 LOGILAB S.A. (Paris, FRANCE), all rights reserved.

# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr

#

# This file is part of CubicWeb.

#

# CubicWeb is free software: you can redistribute it and/or modify it under the

# terms of the GNU Lesser General Public License as published by the Free

# Software Foundation, either version 2.1 of the License, or (at your option)

# any later version.

#

# CubicWeb 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 Lesser General Public License for more

# details.

#

# You should have received a copy of the GNU Lesser General Public License along

# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.

from cubicweb.predicates import is_instance

from cubicweb.entities.adapters import ITreeAdapter

from cubicweb.entities import AnyEntity, fetch_config

class TreeNode(AnyEntity):

    __regid__ = 'TreeNode'

    fetch_attrs, cw_fetch_order = fetch_config(['name'])

class ITreeNode(ITreeAdapter):

    __select__ = is_instance('TreeNode')

    tree_relation = 'parent'