-\dim_new:N \g_kivi_tab_pos_dim
-\dim_gset:Nn \g_kivi_tab_pos_dim {3.5ex}
-\dim_new:N \g_kivi_tab_id_dim
-\dim_gset:Nn \g_kivi_tab_id_dim {4em}
-\dim_new:N \g_kivi_tab_num_dim
-\dim_gset:Nn \g_kivi_tab_num_dim {5em}
-\dim_new:N \g_kivi_tab_price_dim
-\dim_gset:Nn \g_kivi_tab_price_dim {7em}
-\dim_new:N \g_kivi_tab_desc_dim
+\dim_new:N \l_kivi_tab_desc_leftskip_dim
+
+
+
+\cs_new:Nn \__kivi_set_colwidth:nn {
+ \dim_set:cn {l_kivi_tab_#1_dim} {#2}
+}
+
+
+\cs_new:Nn \__kivi_initialize_columns: {
+ \clist_map_inline:Nn \g_kivi_pricingtable_col_clist {
+ \bool_if_exist:cF {l_kivi_col_##1_bool}
+ {
+ \bool_new:c {l_kivi_col_##1_bool}
+ \dim_new:c {l_kivi_tab_##1_dim}
+ \keys_define:nn {kivi/PricingTable} {
+ ##1 .choice:,
+ ##1 / true .code:n = \bool_set_true:c {l_kivi_col_##1_bool},
+ ##1 / false .code:n = \bool_set_false:c {l_kivi_col_##1_bool},
+ ##1 / unknown .code:n = {
+ \bool_set_true:c {l_kivi_col_##1_bool}
+ \dim_set:cn {l_kivi_tab_##1_dim} {####1}
+ },
+ ##1 .default:n = true,
+ ##1 .initial:n = true,
+ ##1 / header .prop_put:c = {l_kivi_col_##1_prop},
+ ##1 / colspec .prop_put:c = {l_kivi_col_##1_prop},
+ }
+ }
+ }
+}
+
+\clist_new:N \g_kivi_pricingtable_col_clist
+
+\keys_define:nn {kivi/PricingTable} {
+ columns .code:n =
+ \clist_gset:Nn \g_kivi_pricingtable_col_clist {#1}
+ \__kivi_initialize_columns:,
+ columns .initial:n = {pos, id, desc, amount, price, pricetotal},
+ unknown .code:n = \keys_set:no {kivi/Tabular} {\l_keys_key_str=#1}
+}
+
+% set default values for colwidth
+\keys_set:nn {kivi/PricingTable} {
+ pos=5ex,
+ id=4em,
+ amount=5em,
+ price=7em,
+ pricetotal=7em,
+ % desc=auto,
+ pos/header=\position,
+ id/header=\artikelnummer,
+ desc/header=\bezeichnung,
+ amount/header=\menge,
+ price/header=\einzelpreis,
+ pricetotal/header=\gesamtpreis,
+ price / colspec = Price,
+ pricetotal / colspec = Price ,
+}