def load_vistrail(locator, is_abstraction=False):
from core.vistrail.vistrail import Vistrail
abstraction_files = []
thumbnail_files = []
mashups = []
vistrail = None
if locator is None:
vistrail = Vistrail()
else:
res = locator.load()
if type(res) == type(SaveBundle(None)):
vistrail = res.vistrail
abstraction_files.extend(res.abstractions)
thumbnail_files.extend(res.thumbnails)
mashups.extend(res.mashups)
else:
vistrail = res
vistrail.is_abstraction = is_abstraction
return (vistrail, abstraction_files, thumbnail_files, mashups)
