#
#  Copyright (c) 2008 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
#

"""
Use ZPT macros as layout renderers.

$Id$
"""


class RendererFactory(object):
    """ Provider for ZPT macros.
    """

    def __init__(self, template):
        self.template = template

    def get(self, key, default=None):
        return self.template.macros.get(key, default)

    def __getitem__(self, key):
        return self.template.macros[key]

    def __getattr__(self, key):
        """ Convenience method for retrieving callable renderer for layout.
        """
        return lambda key=key: self[key]

    def __repr__(self):
        return ('<RendererFactory, template=%r, macros=%r>' %
                    (self.template, self.template.macros.keys()))