Appending a new line to ALV Grid

Question

Hi,
I have created an editable ALV grid wherein the first 2 columns are key fields and hence non-editable and the rest are editable.
Now I try to append or create a row on the ALV Grid by using the standard toolbar buttons. By doing so, it adds a new line that has the first 2 columns (key fields) as non-editable and the rest as editable. I would like to open those key fields for edit mode when I try to append or insert a new row.
I overwrote the code for append and insert with my code like this
  METHOD handle_toolbar.
    DATA: ls_toolbar  TYPE stb_button.
    READ TABLE e_object->mt_toolbar INTO ls_toolbar
      WITH KEY function = '&LOCAL&APPEND'.
    IF sy-subrc = 0.
      ls_toolbar-function = 'MY_APPEND'.
      MODIFY e_object->mt_toolbar FROM ls_toolbar INDEX sy-tabix.
    ENDIF.
  ENDMETHOD.
  METHOD handle_user_command.
    DATA: ls_table TYPE ztable.
    CASE e_ucomm.
      WHEN 'MY_APPEND'.
        APPEND ls_table TO gt_table.  "append an initial line
        PERFORM modify_alv TABLES gt_table.
        CALL METHOD gref_alv->refresh_table_display.
    ENDCASE.
  ENDMETHOD.
FORM modify_alv TABLES xt_lt_table STRUCTURE ztable.
  LOOP AT xt_lt_table INTO ls_table.
    REFRESH lt_cell_style.
    IF NOT ls_table IS INITIAL.
      ls_cell_style-fieldname = 'FIELD1'.
      ls_cell_style-style = cl_gui_alv_grid=>mc_style_disabled.
      INSERT ls_cell_style INTO TABLE lt_cell_style.
    ELSE.
      ls_cell_style-fieldname = 'FIELD1'.
      ls_cell_style-style = cl_gui_alv_grid=>mc_style_enabled.
      INSERT ls_cell_style INTO TABLE lt_cell_style.
   ENDIF.
    INSERT LINES OF lt_cell_style
         INTO TABLE ls_table-gt_cell_style .
    MODIFY xt_lt_table FROM ls_table.
    CLEAR: ls_cell_style.
  ENDLOOP.
  CALL METHOD gref_alv->set_ready_for_input
    EXPORTING
      i_ready_for_input = 1.
ENDFORM.
I used a field catalog to set my ALV for first display where I set the edit field to space for the first 2 columns. I used the modify_alv subroutine to overwrite the editability property of the fields inside the handle_user_command method.
But when I try to append a row, I don't see a switch to edit mode for the key fields.
I have tried searching through but couldn't find anything helpful. Please help me.
Edited by: Nitwick on Jul 13, 2010 4:46 PM

Answer 1

Hi,
Made a silly error in the code while populating the gs_layout.
My declaration had the cell style table to be 'GT_CELL_STYLE'. I have populated it with a local cell style table. So ideally it had to be
gs_layout-stylefname = 'GT_CELL_STYLE'.