Tuesday, November 16, 2010

ALV with editable F4

*&---------------------------------------------------------------*
*& 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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