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LocalAttributes.py

# Localizer, Zope product that provides internationalization services
# Copyright (C) 2000-2002  Juan David Ibáñez Palomar <j-david@noos.fr>

# 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.

"""
Local attributes
"""

__version__ = "$Revision: 1.2.2.1 $"


from ExtensionClass import Base

00027 class LocalAttribute(Base):
    """
    Provides a way to override class variables, useful for example
    for title (defined in SimpleItem).
    """

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

    def __of__(self, parent):
        return parent.getLocalAttribute(self.id)


class LocalAttributesBase:
    def getLocalAttribute(self, name, lang=None):
        """ """
        raise NotImplemented


00046 class LocalAttributes(LocalAttributesBase):
    """
    Example of a 'LocalAttributesBase' derived class, this also a base class
    for 'LocalFolder.LocalFolder' and 'Locale.Locale', it can be considered
    the default implementation.

    Returns attributes of the form <name>_<lang>. When <lang> has more than
    one level, for example es-CO, the dashes are transformed to underscores,
    as dashes aren't valid charecters for identifiers in Python. For example,
    the call 'getLocalAttribute("long_date", "es-CO")' would return
    'self.long_date_es_CO'.
    """

    def getLocalAttribute(self, name, lang=None):
        if lang is None:
            lang = self.get_selected_language()

        lang = lang.replace('-', '_')
        name = '%s_%s' % (name, lang)

        return getattr(self, name)

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