+sub type {
+ return shift->customer_id ? 'sales_delivery_order' : 'purchase_delivery_order';
+}
+
+sub displayable_state {
+ my ($self) = @_;
+
+ return join '; ',
+ ($self->closed ? $::locale->text('closed') : $::locale->text('open')),
+ ($self->delivered ? $::locale->text('delivered') : $::locale->text('not delivered'));
+}
+