def _slot_resources_lookup(self, context, request):
result = dict((slot, []) for slot in SLOTS)
for resource in self.resources:
if ISCSSResourceFactory.providedBy(resource):
resource = resource(context, request)
if resource is not None:
result[resource.slot].append(resource)
return result
def add_scss_factory(context, factory):
"""Register an SCSS resource factory.
"""
if not ISCSSResourceFactory.providedBy(factory):
raise ValueError('add_scss: factory must provide ISCSSResourceFactory')
registry = get_or_create_registry()
registry.add_resource(factory)
