+sub action_stock_in_out_dialog {
+  my ($self) = @_;
+
+  my $part    = SL::DB::Part->load_cached($::form->{parts_id}) or die "need parts_id";
+  my $unit    = SL::DB::Unit->load_cached($::form->{unit}) or die "need unit";
+  my $stock   = $::form->{stock};
+  my $row     = $::form->{row};
+  my $item_id = $::form->{item_id};
+  my $qty     = _parse_number($::form->{qty_as_number});
+
+  my $inout = $self->type_data->transfer;
+
+  my @contents   = DO->get_item_availability(parts_id => $part->id);
+  my $stock_info = DO->unpack_stock_information(packed => $stock);
+
+  $self->merge_stock_data($stock_info, \@contents, $part, $unit);
+
+  $self->render("delivery_order/stock_dialog", { layout => 0 },
+    WHCONTENTS => $self->order->delivered ? $stock_info : \@contents,
+    part       => $part,
+    do_qty     => $qty,
+    do_unit    => $unit->unit,
+    delivered  => $self->order->delivered,
+    row        => $row,
+    item_id    => $item_id,
+  );
+}
+
+sub action_update_stock_information {
+  my ($self) = @_;
+
+  my $stock_info = $::form->{stock_info};
+  my $unit = $::form->{unit};
+  my $yaml = SL::YAML::Dump($stock_info);
+  my $stock_qty = $self->calculate_stock_in_out_from_stock_info($unit, $stock_info);
+
+  my $response = {
+    stock_info => $yaml,
+    stock_qty => $stock_qty,
+  };
+  $self->render(\ SL::JSON::to_json($response), { layout => 0, type => 'json', process => 0 });
+}
+
+sub merge_stock_data {
+  my ($self, $stock_info, $contents, $part, $unit) = @_;
+  # TODO rewrite to mapping
+
+  if (!$self->order->delivered) {
+    for my $row (@$contents) {
+      # row here is in parts units. stock is in item units
+      $row->{available_qty} = _format_number($part->unit_obj->convert_to($row->{qty}, $unit));
+
+      for my $sinfo (@{ $stock_info }) {
+        next if $row->{bin_id}       != $sinfo->{bin_id} ||
+                $row->{warehouse_id} != $sinfo->{warehouse_id} ||
+                $row->{chargenumber} ne $sinfo->{chargenumber} ||
+                $row->{bestbefore}   ne $sinfo->{bestbefore};
+
+        $row->{"stock_$_"} = $sinfo->{$_}
+          for qw(qty unit error delivery_order_items_stock_id);
+      }
+    }
+
+  } else {
+    for my $sinfo (@{ $stock_info }) {
+      my $bin = SL::DB::Bin->load_cached($sinfo->{bin_id});
+      $sinfo->{warehousedescription} = $bin->warehouse->description;
+      $sinfo->{bindescription}       = $bin->description;
+      map { $sinfo->{"stock_$_"}      = $sinfo->{$_} } qw(qty unit);
+    }
+  }
+}
+