unless ( $::form->{assembly_items} and scalar @{$::form->{assembly_items}} ) {
$self->js->run('kivi.Part.set_tab_active_by_name', 'assembly_tab')
->focus('#add_assembly_item_name')
unless ( $::form->{assembly_items} and scalar @{$::form->{assembly_items}} ) {
$self->js->run('kivi.Part.set_tab_active_by_name', 'assembly_tab')
->focus('#add_assembly_item_name')