Row freezing on ALV output

[stockbal]

Row freezing does not work correctly if the selected row index is greater than the number of visible rows.

Proposed solution

See class zcl_dbbr_output_grid

  METHOD change_fixed_rows.
    IF if_from_selection = abap_true.
      get_selected_rows( IMPORTING et_index_rows = DATA(lt_row) ).
      CHECK lt_row IS NOT INITIAL.
      get_first_visible_row( IMPORTING row = DATA(lv_first_visible_row) ).
      DATA(lv_selected_row) = CONV i( lt_row[ lines( lt_row ) ]-index ).
      set_fixed_rows( COND #(
        WHEN lv_first_visible_row = lv_selected_row OR lv_selected_row < lv_first_visible_row THEN
          lv_selected_row
        ELSE
          lv_selected_row - lv_first_visible_row ) ).
    ELSE.
      set_fixed_rows( iv_rows ).
    ENDIF.
  ENDMETHOD.