OpenStack Study: branding.py

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# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2012 United States Government as represented by the

# Administrator of the National Aeronautics and Space Administration.

# All Rights Reserved.

#

# Copyright 2012 Nebula, Inc.

#

# Licensed under the Apache License, Version 2.0 (the "License"); you may

# not use this file except in compliance with the License. You may obtain

# a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

# License for the specific language governing permissions and limitations

# under the License.

"""

Template tags for customizing Horizon.

"""

from django.conf import settings

from django.core.urlresolvers import reverse

from django import template

from django.utils.translation import ugettext_lazy as _

register = template.Library()

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class SiteBrandingNode(template.Node):

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    def render(self, context):

        return getattr(settings, "SITE_BRANDING", _("Horizon"))

@register.tag

def site_branding(parser, token):

    return SiteBrandingNode()

@register.tag

def site_title(parser, token):

    return settings.SITE_BRANDING

@register.simple_tag

def site_branding_link():

    return getattr(settings, "SITE_BRANDING_LINK",

                   reverse("horizon:user_home"))

# TODO(jeffjapan): This is just an assignment tag version of the above, replace

#                  when the dashboard is upgraded to a django version that

#                  supports the @assignment_tag decorator syntax instead.

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def site_branding(parser, token):

    return SiteBrandingNode()

@register.tag

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def site_title(parser, token):

    return settings.SITE_BRANDING

@register.simple_tag

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def site_branding_link():

    return getattr(settings, "SITE_BRANDING_LINK",

                   reverse("horizon:user_home"))

# TODO(jeffjapan): This is just an assignment tag version of the above, replace

#                  when the dashboard is upgraded to a django version that

#                  supports the @assignment_tag decorator syntax instead.

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class SaveBrandingNode(template.Node):

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    def __init__(self, var_name):

        self.var_name = var_name

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    def render(self, context):

        context[self.var_name] = settings.SITE_BRANDING

        return ""

@register.tag

def save_site_branding(parser, token):

    tagname = token.contents.split()

    return SaveBrandingNode(tagname[-1])

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def save_site_branding(parser, token):

    tagname = token.contents.split()

    return SaveBrandingNode(tagname[-1])