Set specific rows in ALV grid ready for input

Question

Hi everyone,
  I have a question about how to set specific rows in ALV grid ready for input.
  I know that I can make some columns ready for input before the ALV displayed,but I have no idea how to make specific rows displayed in the ALV ready for input.

Answer 1

Hello Aaron
For editable columns we can use the fieldcatalog (LVC_S_FCAT-EDIT = 'X') but for rows you need to define editability on cell level.
The required steps are documented in sample report BCALV_EDIT_02. Below I point out a few crucial points:
*§1.Extend your output table for a field, e.g., CELLTAB, that holds
*   information about the edit status of each cell for the
*   corresponding row (the table type is SORTED!).
DATA: BEGIN OF gt_outtab occurs 0.  "with header line
        include structure sflight.
DATA: celltab type LVC_T_STYL.
DATA: END OF gt_outtab.
*§3.Provide the fieldname of the celltab field by using field
*   STYLEFNAME of the layout structure.
   gs_layout-stylefname = 'CELLTAB'.
   CALL METHOD grid1->set_table_for_first_display
         EXPORTING i_structure_name = 'SFLIGHT'
                   is_layout        = gs_layout
         CHANGING  it_outtab        = gt_outtab[].
Note: in the sample report only field SEATSMAX is editable. In your case you need
to fill CELLTAB for all fields in a row.
*§2.After selecting data, set edit status for each row in a loop
*   according to field SEATSMAX.
  LOOP AT gt_outtab.
    l_index = sy-tabix.
    refresh lt_celltab.
    if gt_outtab-seatsmax ge 300.
        perform fill_celltab using 'RW'
                             changing lt_celltab.
    else.
        perform fill_celltab using 'RO'
                             changing lt_celltab.
    endif.
*§2c.Copy your celltab to the celltab of the current row of gt_outtab.
    INSERT LINES OF lt_celltab INTO TABLE gt_outtab-celltab.
    MODIFY gt_outtab INDEX l_index.
  ENDLOOP.
ENDFORM.                               " SELECT_DATA_AND_INIT_STYLE
NOTE: LVC_T_STYL is a SORTED table type. Thus, take care that you are using the
INSERT ... INTO TABLE statement and not APPEND (because then nothing is appended
to the CELLTAB itab).
  IF p_mode EQ 'RW'.
*§2a.Use attribute CL_GUI_ALV_GRID=>MC_STYLE_ENABLED to set a cell
*    to status "editable".
    l_mode = cl_gui_alv_grid=>mc_style_enabled.
  ELSE. "p_mode eq 'RO'
*§2b.Use attribute CL_GUI_ALV_GRID=>MC_STYLE_DISABLED to set a cell
*    to status "non-editable".
    l_mode = cl_gui_alv_grid=>mc_style_disabled.
  ENDIF.
  ls_celltab-fieldname = 'SEATSMAX'.
  ls_celltab-style = cl_gui_alv_grid=>mc_style_disabled.
  INSERT ls_celltab INTO TABLE pt_celltab.
Regards
  Uwe