ALV with editable F4

By Swarna S, Tata Consultancy Services

*&---------------------------------------------------------------*
*& Report  ZALV_EDITF4DISPLAY                                    *
*&                                                               *
*&---------------------------------------------------------------*
*& Published at SAPTechnical.COM                                 *
*&                                                               *
*&---------------------------------------------------------------*
REPORT zalv_editf4display.
*Type pools for alv
TYPE-POOLS : slis.
*structure for t582a tbale
TYPES : BEGIN OF ty_table,
        infty TYPE infty,
        pnnnn TYPE pnnnn_d,
        zrmkz TYPE dzrmkz,
        zeitb TYPE dzeitb,
        dname TYPE dianm,
         davo TYPE davo,
        davoe TYPE davoe,
        END OF ty_table.
*Structure for infotype text
TYPES : BEGIN OF ty_itext,
        infty TYPE infty,
        itext TYPE intxt,
        sprsl TYPE sprsl,
        END OF ty_itext.
*Structure for output display
TYPES : BEGIN OF ty_output,
        infty TYPE infty,
        itext TYPE intxt,
        pnnnn TYPE pnnnn_d,
        zrmkz TYPE dzrmkz,
        zeitb TYPE dzeitb,
        dname TYPE dianm,
        davo TYPE davo,
        davoe TYPE davoe,
       END OF ty_output.
*internal table and work area declarations
DATA : it_table TYPE STANDARD TABLE OF ty_table INITIAL SIZE 0,
       it_output TYPE STANDARD TABLE OF ty_output INITIAL SIZE 0,
       it_pbo TYPE STANDARD TABLE OF ty_output INITIAL SIZE 0,
       it_ittext TYPE STANDARD TABLE OF ty_itext INITIAL SIZE 0,
       wa_table TYPE ty_table,
       wa_output TYPE ty_output,
       wa_ittext TYPE ty_itext.
*Data declarations for dropdown lists for f4
DATA: it_dropdown TYPE lvc_t_drop,
      ty_dropdown TYPE lvc_s_drop,
*data declaration for refreshing of alv
      stable TYPE lvc_s_stbl.
*Global variable declaration
DATA: gstring TYPE c.
*Data declarations for ALV
DATA: c_ccont TYPE REF TO cl_gui_custom_container,         "Custom container object
      c_alvgd         TYPE REF TO cl_gui_alv_grid,         "ALV grid object
      it_fcat            TYPE lvc_t_fcat,                  "Field catalogue
      it_layout          TYPE lvc_s_layo.                  "Layout
*ok code declaration
DATA:
  ok_code       TYPE ui_func.
*initialization event
INITIALIZATION.
*start of selection event
START-OF-SELECTION.
*select the infotypes maintained
  SELECT infty
          pnnnn
          zrmkz
          zeitb
          dname
          davo
          davoe
          FROM t582a UP TO 10 ROWS
          INTO CORRESPONDING FIELDS OF TABLE it_table.
* *Select the infotype texts
  IF it_table[] IS NOT INITIAL.
    SELECT itext
             infty
             sprsl
             FROM t582s
             INTO CORRESPONDING FIELDS OF TABLE it_ittext
             FOR ALL ENTRIES IN it_table
             WHERE infty = it_table-infty
             AND sprsl = 'E'.
  ENDIF.
*Apppending the data to the internal table of ALV output
  LOOP AT it_table INTO wa_table.
    wa_output-infty = wa_table-infty.
    wa_output-pnnnn = wa_table-pnnnn.
    wa_output-zrmkz = wa_table-zrmkz.
    wa_output-zeitb = wa_table-zeitb.
    wa_output-dname = wa_table-dname.
    wa_output-davo = wa_table-davo.
    wa_output-davoe = wa_table-davoe.
* For texts
    READ TABLE it_ittext INTO wa_ittext WITH KEY infty = wa_table-infty.
    wa_output-itext = wa_ittext-itext.
    APPEND wa_output TO it_output.
    CLEAR wa_output.
  ENDLOOP.
* Calling the ALV screen with custom container
  CALL SCREEN 0600.
*On this statement double click  it takes you to the screen painter SE51.
*Enter the attributes
*Create a Custom container and name it CCONT and OK code as OK_CODE.
*Save check and Activate the screen painter.
*Now a normal screen with number 600 is created which holds the ALV grid.
* PBO of the actual screen ,
* Here we can give a title and customized menus
*create 2 buttons with function code 'SAVE' and 'EXIT'.
* GIVE A SUITABLE TITLE
*&---------------------------------------------------------------------*
*&      Module  STATUS_0600  OUTPUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
MODULE status_0600 OUTPUT.
  SET PF-STATUS 'DISP'.
  SET TITLEBAR 'ALVF4'.
ENDMODULE.                 " STATUS_0600  OUTPUT
* calling the PBO module ALV_GRID.
*&---------------------------------------------------------------------*
*&      Module  PBO  OUTPUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
MODULE pbo OUTPUT.
*Creating objects of the container
  CREATE OBJECT c_ccont
       EXPORTING
          container_name = 'CCONT'.
*  create object for alv grid
  create object c_alvgd
  exporting
  i_parent = c_ccont.
*  SET field for ALV
  PERFORM alv_build_fieldcat.
* Set ALV attributes FOR LAYOUT
  PERFORM alv_report_layout.
  CHECK NOT c_alvgd IS INITIAL.
* Call ALV GRID
  CALL METHOD c_alvgd->set_table_for_first_display
    EXPORTING
      is_layout                     = it_layout
      i_save                        = 'A'
    CHANGING
      it_outtab                     = it_output
      it_fieldcatalog               = it_fcat
    EXCEPTIONS
      invalid_parameter_combination = 1
      program_error                 = 2
      too_many_lines                = 3
      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.
ENDMODULE.                 " PBO  OUTPUT
*&---------------------------------------------------------------------*
*&      Form  alv_build_fieldcat
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*      <--P_IT_FCAT  text
*----------------------------------------------------------------------*
*subroutine to build fieldcat
FORM alv_build_fieldcat.
  DATA lv_fldcat TYPE lvc_s_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '1'.
  lv_fldcat-fieldname = 'INFTY'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 8.
  lv_fldcat-scrtext_m = 'Infotype'.
  lv_fldcat-icon = 'X'.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '2'.
  lv_fldcat-fieldname = 'PNNNN'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 15.
  lv_fldcat-scrtext_m = 'Structure'.
  lv_fldcat-icon = ''.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '3'.
  lv_fldcat-fieldname = 'ITEXT'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 60.
  lv_fldcat-scrtext_m = 'Description'.
  lv_fldcat-icon = ''.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '5'.
  lv_fldcat-fieldname = 'ZRMKZ'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 1.
  lv_fldcat-scrtext_m = 'PERIOD'.
  lv_fldcat-icon = ''.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '6'.
  lv_fldcat-fieldname = 'ZEITB'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 5.
  lv_fldcat-scrtext_m = 'Time constraint'.
  lv_fldcat-edit = 'X'.
*To avail the existing F4 help these are to
*be given in the field catalogue
  lv_fldcat-f4availabl = 'X'.
  lv_fldcat-ref_table = 'T582A'.
  lv_fldcat-ref_field = 'ZEITB'.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '7'.
  lv_fldcat-fieldname = 'DNAME'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 15.
  lv_fldcat-scrtext_m = 'Dialogmodule'.
  lv_fldcat-icon = ''.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '8'.
  lv_fldcat-fieldname = 'DAVO'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 15.
  lv_fldcat-scrtext_m = 'Start'.
  lv_fldcat-edit = 'X'.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
  lv_fldcat-row_pos   = '1'.
  lv_fldcat-col_pos   = '9'.
  lv_fldcat-fieldname = 'DAVOE'.
  lv_fldcat-tabname   = 'IT_OUTPUT'.
  lv_fldcat-outputlen = 15.
  lv_fldcat-scrtext_m = 'End'.
  lv_fldcat-icon = ''.
  APPEND lv_fldcat TO it_fcat.
  CLEAR lv_fldcat.
*To create drop down for the field 'DAVO'
* with our own f4 help
  ty_dropdown-handle = '1'.
  ty_dropdown-value = ' '.
  APPEND ty_dropdown TO it_dropdown.
  ty_dropdown-handle = '1'.
  ty_dropdown-value = '1'.
  APPEND ty_dropdown TO it_dropdown.
  ty_dropdown-handle = '1'.
  ty_dropdown-value = '2'.
  APPEND ty_dropdown TO it_dropdown.
  ty_dropdown-handle = '1'.
  ty_dropdown-value = '3'.
  APPEND ty_dropdown TO it_dropdown.
  CALL METHOD c_alvgd->set_drop_down_table
    EXPORTING
      it_drop_down = it_dropdown.
  LOOP AT it_fcat INTO lv_fldcat.
    CASE lv_fldcat-fieldname.
** To assign dropdown in the fieldcataogue
      WHEN 'DAVO'.
        lv_fldcat-drdn_hndl = '1'.
        lv_fldcat-outputlen = 15.
        MODIFY it_fcat FROM lv_fldcat.
    ENDCASE.
  ENDLOOP.
ENDFORM.                    " alv_build_fieldcat
*&---------------------------------------------------------------------*
*&      Form  alv_report_layout
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*      <--P_IT_LAYOUT  text
*----------------------------------------------------------------------*
*Subroutine for setting alv layout
FORM alv_report_layout.
  it_layout-cwidth_opt = 'X'.
  it_layout-col_opt = 'X'.
  it_layout-zebra = 'X'.
ENDFORM.                    " alv_report_layout
* PAI module of the screen created. In case we use an interactive ALV or
*for additional functionalities we can create OK codes
*and based on the user command we can do the coding.
*&---------------------------------------------------------------------*
*&      Module  PAI  INPUT
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
MODULE pai INPUT.
*To change the existing values and refresh the grid
*And only values in the dropdown or in the default
*F4 can be given , else no action takes place for the dropdown
*and error is thrown for the default F4 help and font changes to red
*and on still saving, value is not changed
  c_alvgd->check_changed_data( ).
*Based on the user input
*When user clicks 'SAVE;
  CASE ok_code.
    WHEN 'SAVE'.
*A pop up is called to confirm the saving of changed data
      CALL FUNCTION 'POPUP_TO_CONFIRM'
        EXPORTING
          titlebar       = 'SAVING DATA'
          text_question  = 'Continue?'
          icon_button_1  = 'icon_booking_ok'
        IMPORTING
          answer         = gstring
        EXCEPTIONS
          text_not_found = 1
          OTHERS         = 2.
      IF sy-subrc NE 0.
*       MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*               WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
      ENDIF.
*When the User clicks 'YES'
      IF ( gstring = '1' ).
        MESSAGE 'Saved' TYPE 'S'.
*Now the changed data is stored in the it_pbo internal table
        it_pbo = it_output.
*Subroutine to display the ALV with changed data.
        PERFORM redisplay.
      ELSE.
*When user clicks NO or Cancel
        MESSAGE 'Not Saved'  TYPE 'S'.
      ENDIF.
**When the user clicks the 'EXIT; he is out
    WHEN 'EXIT'.
      LEAVE PROGRAM.
  ENDCASE.
  CLEAR: ok_code.
ENDMODULE.                 " PAI  INPUT
*&---------------------------------------------------------------------*
*&      Form  REDISPLAY
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
*  -->  p1        text
*  <--  p2        text
*----------------------------------------------------------------------*
FORM redisplay .
*Cells of the alv are made non editable after entering OK to save
  CALL METHOD c_alvgd->set_ready_for_input
    EXPORTING
      i_ready_for_input = 0.
*Row and column of the alv are refreshed after changing values
  stable-row = 'X'.
  stable-col = 'X'.
*REfreshed ALV display with the changed values
*This ALV is non editable and contains new values
  CALL METHOD c_alvgd->refresh_table_display
    EXPORTING
      is_stable = stable
    EXCEPTIONS
      finished  = 1
      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.
ENDFORM.                    " REDISPLAY

Initial Output.   

Default F4 HELP for the field TC  

F4 help in the dropdown   

After editing the values and clicking SAVE,

 

When YES, Changed Data gets SAVED and ALV is refreshed.

 

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