from django.utils.translation import ugettext_lazy as _
from django.core.exceptions import ImproperlyConfigured

from navigation.api import register_sidebar_template

from converter.utils import load_backend
from converter.conf.settings import GRAPHICS_BACKEND

formats_list = {'text': _('file formats'), 'view': 'formats_list', 'famfam': 'pictures'}

register_sidebar_template(['formats_list'], 'converter_file_formats_help.html')

try:
    backend = load_backend().ConverterClass()
except ImproperlyConfigured:
    raise ImproperlyConfigured(u'Missing or incorrect converter backend: %s' % GRAPHICS_BACKEND)