REUSE_ALV_GRID_DISPLAY with editable field -- Recuperate new value

Question

Hi everybody,
I try to explain my problem. I created an ALV grid with the function REUSE_ALV_GRID_DISPLAY and an internal table.
The user can change the value of one field and can save it. Indeed, in debbug mode, I can see in the internal table the new value entered by the user. So I can do all the actions with the launch of a routine.
But the user can forger to save his change. So, when he clicks on "Back" I want to propose him to save. THE PROBLEM : in debbug mode, when the routine is launched, the internal table does't have the new value..
So have you got an idea to recuperate the new value?
Thank you very much in advance.
Best regards.

Answer 1

I had the same problem and solved it: I used SET_TABLE_FOR_FIRST_DISPLAY.
The MT_OUTPUT tab has the ALV data and the column in here must be modifed. Steps:
data: p_grid  type ref to lcl_gui_alv_grid.
Step 1. Create a sub class for LCL_GUI_ALV_GRID_DEFINITION.
*       class lcl_gui_alv_grid  definitio
CLASS lcl_gui_alv_grid DEFINITION
        INHERITING FROM cl_gui_alv_grid.
  PUBLIC SECTION.
    METHODS: update_outtab
               IMPORTING i_good_cells TYPE lvc_t_modi.
**             check_changed_data.
ENDCLASS.                    "lcl_gui_alv_grid  DEFINITIO
Step2
Use event data_changed_finished of LCL_EVENT_RECEIVER
*       CLASS lcl_event_receiver DEFINITION
CLASS lcl_event_receiver DEFINITION.
  PUBLIC SECTION.
    METHODS:
      handle_data_changed
         FOR EVENT data_changed OF cl_gui_alv_grid
             IMPORTING er_data_changed,
      handle_data_change_finished    "****<----------
         FOR EVENT data_changed_finished OF cl_gui_alv_grid
             IMPORTING e_modified et_good_cells,
      handle_double_click
         FOR EVENT double_click OF cl_gui_alv_grid
             IMPORTING e_row e_column,
      handle_after_refresh
         FOR EVENT after_refresh OF cl_gui_alv_grid.
*Implementation
CLASS lcl_event_receiver IMPLEMENTATION.
METHOD handle_data_change_finished.
    DATA: lt_goodcells TYPE lvc_t_modi.
    CHECK NOT e_modified IS INITIAL AND NOT et_good_cells IS INITIAL.
    lt_goodcells[] = et_good_cells[].
    CALL METHOD p_grid->update_outtab
      EXPORTING
        i_good_cells = lt_goodcells.
    CALL METHOD p_grid->refresh_table_display.
  ENDMETHOD.                    "data_changed_finished
*-- ALV data updated in class implementation below
CLASS lcl_gui_alv_grid IMPLEMENTATION.
  METHOD update_outtab.
    FIELD-SYMBOLS: <tab1> TYPE STANDARD TABLE,
                   <good> TYPE lvc_s_modi,
                   <fs1> TYPE ANY,
                   <fs2> TYPE ANY.
    DATA: ls_alv TYPE type_alv,
          fldabgru(32) TYPE c VALUE '<TAB1>-ABGRU_NEW',
          fldbezei(32) TYPE c VALUE '<TAB1>-BEZEI_NEW',
          lv_bezei TYPE bezei40.
    ASSIGN mt_outtab->* TO <tab1>.  "ALV display table
    LOOP AT i_good_cells ASSIGNING <good>.
      READ TABLE <tab1> INTO ls_alv INDEX <good>-row_id.
      IF sy-subrc EQ 0.
        SELECT SINGLE bezei INTO ls_alv-bezei_new
          FROM tvagt
          WHERE spras = sy-langu
            AND abgru = ls_alv-abgru_new.
        IF sy-subrc EQ 0.
          MODIFY <tab1> FROM ls_alv INDEX <good>-row_id.
        ENDIF.
      ENDIF.
    ENDLOOP.
  ENDMETHOD.                    "update_outtab