def __init__(self, appdata, cnf={}):
self.config = CDRZ_Config()
config_file = os.path.join(appdata.app_config_dir, 'cdr_config.xml')
self.config.load(config_file)
self.config.update(cnf)
self.appdata = appdata
self.doc_id = id(self)
self.loader = CDRZ_Loader()
self.saver = CDRZ_Saver()
self.create_cache_structure()
self.new()
