void e_data_cal_report_error (EDataCal *cal, const gchar *message);
void e_data_cal_report_readonly (EDataCal *cal, gboolean is_readonly);
void e_data_cal_report_online (EDataCal *cal, gboolean is_online);
-void e_data_cal_report_auth_required (EDataCal *cal, const ECredentials *credentials);
void e_data_cal_report_opened (EDataCal *cal, const GError *error);
void e_data_cal_report_free_busy_data (EDataCal *cal, const GSList *freebusy);
void e_data_cal_report_backend_property_changed (EDataCal *cal, const gchar *prop_name, const gchar *prop_value);