GWT CellTable Sort arow Icon on all sortable columns

Question

I'm having a CellTable with sortable Columns and it works like in the showcase ( GWT CellTable showcase ). But I think this is not very user friendly. Because the sort arrow icon is only on 1 column and I think it should be an all (set to be) sortable columns. How can I have a arrow icon, with the same behavior, over all sortable columns. thanks for any help :)

Answer 1

An arrow shows which column is currently sorted. If you put arrows on all columns, how will a user tell which column is currently used for sorting? I think it defeats the purpose of the arrow.