/usr/share/pyshared/schooltool/traverser/interfaces.py is in python-schooltool 1:2.1.0-0ubuntu1.
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# SchoolTool - common information systems platform for school administration
# Copyright (c) 2005 Shuttleworth Foundation
#
# 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
#
"""
Pluggable Traverser Interfaces
This implementation is independent of the presentation type. Sub-interfaces
must be written for every specific presentation type.
$Id$
"""
from zope.interface import Interface, Attribute
from zope.publisher.interfaces import IPublishTraverse
class IPluggableTraverser(IPublishTraverse):
"""A pluggable traverser.
This traverser traverses a name by utilizing helper traversers that are
registered as ``ITraverserPlugin`` subscribers.
"""
class ISchoolToolTraverser(Interface):
"""A plugin for the pluggable traverser."""
context = Attribute("The context object the plugin traverses")
request = Attribute("The request object driving the traversal")
def traverse(name):
"""The 'name' argument is the name that is to be looked up; it must
be an ASCII string or Unicode object.
If a lookup is not possible, raise a NotFound error.
This method should return an object having the specified name and
`self` as parent.
"""
class ITraverser(IPublishTraverse,
ISchoolToolTraverser):
"""A simple traverser.
This traverser traverses a name by utilizing helper traversers that are
registered as ``ITraverserPlugin`` subscribers.
"""
class ITraverserPlugin(ISchoolToolTraverser):
"""A plugin for the pluggable traverser."""
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