Automatic refresh in alv grids

Question

Hi!
I've three containers with three alv grids on my screen.
I've a self made save-button on the toolbar of the first grid.
Now i insert data in grid2 and grid3 ...
When i press now the save-button from grid1 there's no data in the internal tables from grid2 and grid3.
When i first press the refresh-buttons on the toolbars from grid2 and grid3 and then the save-button from grid1 the internal tables from grid2 and grid3 are filled.
Is it possible to simulate first the pressed refresh-buttons from grid2/grid3 when pressing the save-button from grid1?
I've tried to set a "call method grid2->refresh_table_display" and "call method grid2->refresh_table_display" before the code for the save-button but this doesn't work.
Is there any help for me?
Thanks a lot in advance!
Ingo

Answer 1

Hello Ingo
It is important to realise that pushing a toolbar button does <b>NOT </b>trigger PAI of the dynpro where the ALV list is displayed.
In order to refresh the display of the other two ALV grids you need to pass PAI (followed by PBO). How to do that? There are at least two possible ways:
(1) You handle the SAVE command in your method HANDLE_USER_COMMAND. Within this method you update the internal tables for grid2 and grid3 depending on the contents of grid1. At the end of this method you call method CL_GUI_CFW=>set_new_ok_code( 'REFRESH' ). This will trigger PAI of the dynpro. In the PAI module (e.g. USER_COMMAND_0100) you could write the following coding:
  CASE gd_okcode.
    WHEN 'REFRESH'. 
      go_grid2->refresh_table_display( ).
      go_grid3->refresh_table_display( ).
  ENDCASE.
(2) You handle the SAVE command in your method HANDLE_USER_COMMAND and call method CL_GUI_CFW=>set_new_ok_code( 'REFRESH' ) without updating the itab2 and itab3 here. The updating of these itabs occurs in the PAI module.
The following sample report shows you the second approach. On the first ALV grid customers are displayed. If you double-click on a single customer its sales areas (if any) are displayed in the second ALV list.
*& Report  ZUS_SDN_TWO_ALV_GRIDS
REPORT  zus_sdn_two_alv_grids.
DATA:
  gd_okcode        TYPE ui_func,
  go_docking       TYPE REF TO cl_gui_docking_container,
  go_splitter      TYPE REF TO cl_gui_splitter_container,
  go_cell_top      TYPE REF TO cl_gui_container,
  go_cell_bottom   TYPE REF TO cl_gui_container,
  go_grid1         TYPE REF TO cl_gui_alv_grid,
  go_grid2         TYPE REF TO cl_gui_alv_grid,
  gs_layout        TYPE lvc_s_layo.
DATA:
  gt_knb1          TYPE STANDARD TABLE OF knb1,
  gt_knvv          TYPE STANDARD TABLE OF knvv.
*       CLASS lcl_eventhandler DEFINITION
CLASS lcl_eventhandler DEFINITION.
  PUBLIC SECTION.
    CLASS-METHODS:
      handle_double_click FOR EVENT double_click OF cl_gui_alv_grid
        IMPORTING
          e_row
          e_column
          es_row_no
          sender.
ENDCLASS.                    "lcl_eventhandler DEFINITION
*       CLASS lcl_eventhandler IMPLEMENTATION
CLASS lcl_eventhandler IMPLEMENTATION.
  METHOD handle_double_click.
*   define local data
    DATA:
      ls_knb1      TYPE knb1.
    CHECK ( sender = go_grid1 ).
    READ TABLE gt_knb1 INTO ls_knb1 INDEX e_row-index.
    CHECK ( ls_knb1-kunnr IS NOT INITIAL ).
    CALL METHOD go_grid1->set_current_cell_via_id
      EXPORTING
*        IS_ROW_ID    =
*        IS_COLUMN_ID =
        is_row_no    = es_row_no.
*   Triggers PAI of the dynpro with the specified ok-code
    CALL METHOD cl_gui_cfw=>set_new_ok_code( 'DETAIL' ).
  ENDMETHOD.                    "handle_double_click
ENDCLASS.                    "lcl_eventhandler IMPLEMENTATION
START-OF-SELECTION.
  SELECT        * FROM  knb1 INTO TABLE gt_knb1
         WHERE  bukrs  = '1000'.
* Create docking container
  CREATE OBJECT go_docking
    EXPORTING
      parent                      = cl_gui_container=>screen0
      ratio                       = 90
    EXCEPTIONS
      OTHERS                      = 6.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
* Create splitter container
  CREATE OBJECT go_splitter
    EXPORTING
      parent            = go_docking
      rows              = 2
      columns           = 1
*      NO_AUTODEF_PROGID_DYNNR =
*      NAME              =
    EXCEPTIONS
      cntl_error        = 1
      cntl_system_error = 2
      OTHERS            = 3.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
* Get cell container
  CALL METHOD go_splitter->get_container
    EXPORTING
      row       = 1
      column    = 1
    RECEIVING
      container = go_cell_top.
  CALL METHOD go_splitter->get_container
    EXPORTING
      row       = 2
      column    = 1
    RECEIVING
      container = go_cell_bottom.
* Create ALV grids
  CREATE OBJECT go_grid1
    EXPORTING
      i_parent          = go_cell_top
    EXCEPTIONS
      OTHERS            = 5.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
* Set event handler
  SET HANDLER: lcl_eventhandler=>handle_double_click FOR go_grid1.
  CREATE OBJECT go_grid2
    EXPORTING
      i_parent          = go_cell_bottom
    EXCEPTIONS
      OTHERS            = 5.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
* Display data
  gs_layout-grid_title = 'Customers'.
  CALL METHOD go_grid1->set_table_for_first_display
    EXPORTING
      i_structure_name = 'KNB1'
      is_layout        = gs_layout
    CHANGING
      it_outtab        = gt_knb1
    EXCEPTIONS
      OTHERS           = 4.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
  gs_layout-grid_title = 'Customers Details (Sales Areas)'.
  CALL METHOD go_grid2->set_table_for_first_display
    EXPORTING
      i_structure_name = 'KNVV'
      is_layout        = gs_layout
    CHANGING
      it_outtab        = gt_knvv  " empty !!!
    EXCEPTIONS
      OTHERS           = 4.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
* Link the docking container to the target dynpro
  CALL METHOD go_docking->link
    EXPORTING
      repid                       = syst-repid
      dynnr                       = '0100'
*      CONTAINER                   =
    EXCEPTIONS
      OTHERS                      = 4.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
* NOTE: dynpro does not contain any elements
  CALL SCREEN '0100'.
* Flow logic of dynpro (does not contain any dynpro elements):
*PROCESS BEFORE OUTPUT.
*  MODULE STATUS_0100.
*PROCESS AFTER INPUT.
*  MODULE USER_COMMAND_0100.
END-OF-SELECTION.
*&      Module  STATUS_0100  OUTPUT
*       text
MODULE status_0100 OUTPUT.
  SET PF-STATUS 'STATUS_0100'.  " contains push button "DETAIL"
*  SET TITLEBAR 'xxx'.
* Refresh display of detail ALV list
  CALL METHOD go_grid2->refresh_table_display
*    EXPORTING
*      IS_STABLE      =
*      I_SOFT_REFRESH =
    EXCEPTIONS
      OTHERS         = 2.
  IF sy-subrc <> 0.
*   MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
ENDMODULE.                 " STATUS_0100  OUTPUT
*&      Module  USER_COMMAND_0100  INPUT
*       text
MODULE user_command_0100 INPUT.
  CASE gd_okcode.
    WHEN 'BACK' OR
         'END'  OR
         'CANC'.
      SET SCREEN 0. LEAVE SCREEN.
*   User has pushed button "Display Details"
    WHEN 'DETAIL'.
      PERFORM entry_show_details.
    WHEN OTHERS.
  ENDCASE.
  CLEAR: gd_okcode.
ENDMODULE.                 " USER_COMMAND_0100  INPUT
*&      Form  ENTRY_SHOW_DETAILS
*       text
*  -->  p1        text
*  <--  p2        text
FORM entry_show_details .
* define local data
  DATA:
    ld_row      TYPE i,
    ls_knb1     TYPE knb1.
  CALL METHOD go_grid1->get_current_cell
    IMPORTING
      e_row = ld_row.
  READ TABLE gt_knb1 INTO ls_knb1 INDEX ld_row.
  CHECK ( syst-subrc = 0 ).
  SELECT        * FROM  knvv INTO TABLE gt_knvv
         WHERE  kunnr  = ls_knb1-kunnr.
ENDFORM.                    " ENTRY_SHOW_DETAILS
Regards
  Uwe