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Using InputField inside MapThread

  • To: mathgroup at smc.vnet.net
  • Subject: [mg126102] Using InputField inside MapThread
  • From: Robert Wright <mathematicauser1 at yahoo.com>
  • Date: Tue, 17 Apr 2012 06:04:53 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • Reply-to: Robert Wright <mathematicauser1 at yahoo.com>

Can someone see why the first block of code works and the second does not. And how do I fix the problem, the idea is be able to 'filter' the container 'data' so that each OpenerView displays the data corresponding to the filter.


 data = {   {"1", "Category1", "Subcat11", Null}, {"2", "Category1", "Subcat12", Null},   {"3", "Category1", "Subcat13", Null},
   {"4", "Category2", "Subcat21", Null},
   {"5", "Category2", "Subcat22", Null},
   {"6", "Category2", "Subcat23", Null}};

fieldWidths = {5, 15, 20, 20};

nColumns = 4;

DB = Cases[data, {_, "Category2", _, _}];

(*this example works*)

OpenerView[{"Category2", Dynamic@Style[ 
    TableForm[
      Partition[ 
      MapThread[
    InputField[Dynamic[DB[[#1, #2]]], String, FieldSize -> #3] &, 
     Append[
        Transpose@
    Flatten[Table[{i, j}, {i, Length@DB}, {j, 1, nColumns}], 1], 
        Flatten@Table[ fieldWidths, {Length@DB}]]], nColumns]],  
    FontFamily -> "Arial", FontSize -> 10]
  }]


(*this example doesn't *)

OpenerView[{"Category2", Dynamic@Style[ 
TableForm[
      Partition[ 
      MapThread[
       InputField[
         Dynamic[Cases[data, {_, "Category2", _, _}][[#1, #2]]], 
         String, FieldSize -> #3] &, 
       Append[
     Transpose@
         Flatten[Table[{i, j}, {i, 
Length@Cases[data, {_, "Category2", _, _}]}, {j, 1, 
            nColumns}], 1], 
Flatten@Table[ 
          fieldWidths, {Length@
            Cases[data, {_, "Category2", _, _}]}]]], nColumns]],  
    FontFamily -> "Arial", FontSize -> 10]

Thanks, Robert


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