cybertools/lazyvars/interfaces.py
helmutm 9cfdbfd255 added lazyvars package; relations renamed to relation
git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@631 fd906abe-77d9-0310-91a1-e0d9ade77398
2005-10-19 09:03:09 +00:00

42 lines
1.4 KiB
Python

#
# Copyright (c) 2005 Helmut Merz helmutm@cy55.de
#
# 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
#
"""
interface definitions for the LazyVars stuff.
$Id$
"""
from zope.interface import Interface, Attribute
class ILazyVars(Interface):
""" Generic adapter that provides lazy setting and returning
of variables.
"""
def registerVariable(class_, name, function):
""" Class method: register a variable 'name' on class 'class_' that
will be provided by calling the function given.
The function should have one parameter that is set to the LazyVars
object when the function is called. Thus the method has access
to the instance variables (and other methods) of the LazyVars
object.
"""