Going back to selection screen from Change mode in ALV.

Question

Hello Gurus,
I am working on a issue related to ALV where ALV becomes editable when user clicks on change button.  The Change button is a custom button defined in application toolbar of ALV display.
case ucomm.
WHEN 'TBACK'.
     leave to screen 0.
when 'CHNG'.
        loop at it_apst01.
              WA_FIELD_LST-EDIT = 'X'.
*             Then some field symbol stuff is there
              MODIFY FIELD_LST from wa_field_lst transporting edit
                     where FIELDNAME = <FS5>.
            ENDIF.
          endif.
        endloop.
      ENDIF.
      describe table gt_alv lines c_hits.
      c_alv_hits = c_hits.
      concatenate text-010 c_alv_hits 'hits' into c_alv_title separated
      by space.
      perform display_report tables gt_alv USING c_alv_title.
form display_report tables p_outtab using p_title.
call function 'REUSE_ALV_GRID_DISPLAY'
       exporting
            i_callback_program       = lv_progname
            i_callback_pf_status_set = 'ALV_STATUS'
            i_callback_user_command  = 'ALV_UCOMM'
*            i_callback_top_of_page   = 'TOP_OF_PAGE'
            is_layout                = is_layout
            it_fieldcat              = field_lst
*            is_variant               = g_variant
            it_event_exit            = gt_event_exit
            i_save                   = 'A'
            it_sort                  = it_sort
            i_screen_start_column    = i_start_col
            i_screen_start_line      = i_start_ln
            i_screen_end_column      = i_end_col
            i_screen_end_line        = i_end_ln
       tables
            t_outtab                 = p_outtab
       exceptions
            program_error            = 1
            others                   = 2.
endform.
Everything is working ok. But when I click on Back button,the screen goes first to the ALV display mode from edit mode, then user has to click one time more the back button to go to selection screen because the FM 'REUSE_ALV_GRID_DISPLAY' is called once again when user clicks
on change button because I am making the EDIT flag = 'X' and then calling FM again.
Is there a way that when user clicks on Back button, he will directly go to Change Screen -> Selection screen instead of going to Change screen -> Display screen -> Selection screen
Regards,
Rajesh.

Answer 1

You must not call the FM 'REUSE_ALV_GRID_DISPLAY' again to make it editable. Instead you can call the FM REUSE_ALV_GRID_LAYOUT_INFO_GET and REUSE_ALV_GRID_LAYOUT_INFO_SET to make your grid editable / non-editable.
Like this:
REPORT grid_edit.
TYPE-POOLS: slis.
* Data to be displayed
DATA: gt_sflight TYPE TABLE OF sflight.
DATA: gs_layout TYPE slis_layout_alv.
parameters: p_test type flag.
start-of-selection.
* Selection
SELECT * FROM sflight INTO CORRESPONDING FIELDS OF TABLE gt_sflight.
* Eingabebereit
gs_layout-edit = 'X'.
* Call ABAP List Viewer (ALV)
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
  EXPORTING
    i_callback_program      = sy-cprog
    i_callback_user_command = 'USER_COMMAND'
    i_structure_name        = 'SFLIGHT'
    is_layout               = gs_layout
  TABLES
    t_outtab                = gt_sflight.
*&      Form  user_command
FORM user_command USING r_ucomm TYPE sy-ucomm
                        rs_selfield TYPE slis_selfield.
  DATA: ls_layout TYPE slis_layout_alv.
  IF r_ucomm = '&DATA_SAVE'.
    MESSAGE i000(0k) WITH text-001.
    CALL FUNCTION 'REUSE_ALV_GRID_LAYOUT_INFO_GET'
      IMPORTING
        es_layout = ls_layout.
    IF sy-subrc <> 0.
    ENDIF.
    ls_layout-edit = ' '.
    CALL FUNCTION 'REUSE_ALV_GRID_LAYOUT_INFO_SET'
      EXPORTING
        is_layout = ls_layout.
  ENDIF.
ENDFORM.                    "user_command
In this example, when you SAVE, it will give you one Information message and than make the Layout to non-editable mode. When you press back button, it will get you back to selection screen.
Regards,
Naimesh Patel