def __init__(self, backend, cfg=None):
callbacks.UpdateCallback.__init__(self)
log.info("==== callback ==== ")
if cfg:
self.setTrustThreshold(cfg.trustThreshold)
self.backend = backend
self.currentJob = None
self.smallUpdate = False
self.error = []
self.progress = PackagekitProgress()
self.disablepercent = False
self.dostep = True
