Posted: Wed May 26, 2010 3:27 pm Post subject: Editable Fieldcatalogue for ALV display
By Swarna S, Tata Consultancy Services
Code:
*&---------------------------------------------------------------------*
*& Report ZALV_FCAT *
*& Author : Swarna.S
*&---------------------------------------------------------------------*
*& AS : ALV report which displays the contents of the table T006
*& (as a docking container in the bottom) along with the
*& editable ALV which contains the ALV fieldcatalogue table structure.
*& With the available toolbar options of the editable ALV in the output,
*& user can change the fieldcatalogue as per his requirement.
*& When the user clicks 'SUBMIT',the display of the ALV with table T006
*& gets modified and customised accordingly to the user's requirement.
*&---------------------------------------------------------------------*REPORT zalv_fcat.* Output table T006 structure declarationTYPES : BEGIN OF ty_t006.
INCLUDE STRUCTURE t006.
TYPES : END OF ty_t006.*Internal table and wa declaration for T006
DATA : it_t006 TYPE STANDARD TABLE OF ty_t006,
wa_t006 TYPE ty_t006.*declarations for ALV
DATA: ok_code TYPE sy-ucomm,
* fieldcatalog for T006
it_fielcat TYPE lvc_t_fcat,
* fieldcatalog for fieldcatalog itself:
it_fielcatalogue TYPE lvc_t_fcat,
it_layout TYPE lvc_s_layo.*declaration for toolbar function
DATA: it_excl_func TYPE ui_functions.
* Controls to display it_t006 and corresponding fieldcatalog
DATA: cont_dock TYPE REF TO cl_gui_docking_container,
cont_alvgd TYPE REF TO cl_gui_alv_grid.*controls to display the fieldcatalog as editable alv grid and container
DATA: cont_cust TYPE REF TO cl_gui_custom_container,
cont_editalvgd TYPE REF TO cl_gui_alv_grid.*intialization event
INITIALIZATION.*start of selection event
START-OF-SELECTION.
**************************************************************
* LOCAL CLASS Definition for data changed in fieldcatalog ALV
**************************************************************
CLASS lcl_event_receiver DEFINITION.
PUBLIC SECTION.
METHODS handle_data_changed
FOR EVENT data_changed OF cl_gui_alv_grid
IMPORTING er_data_changed.
ENDCLASS. "lcl_event_receiver DEFINITION
**************************************************************
* LOCAL CLASS implementation for data changed in fieldcatalog ALV
**************************************************************
CLASS lcl_event_receiver IMPLEMENTATION.
METHOD handle_data_changed.
ENDMETHOD. "handle_data_changed
ENDCLASS. "lcl_event_receiver IMPLEMENTATION*data declaration for event receiver
DATA: event_receiver TYPE REF TO lcl_event_receiver.*end of selection event
END-OF-SELECTION.*setting the screen for alv output for table display and
*changed fieldcatalalogue display
SET SCREEN 600.
*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
*Go to SE41 and create status 'STATUS600' and create THE function code 'SUBMIT'
*and 'EXIT' with icons and icon texts
*Also create a TitleBar 'TITLE600' and give the relevant title.*&---------------------------------------------------------------------*
*& Module STATUS_0600 OUTPUT
*&---------------------------------------------------------------------*
MODULE status_0600 OUTPUT.
SET PF-STATUS 'STATUS600'.
SET TITLEBAR 'TITLE600'.
* CREATE ALV GRID CONTROL IF DOES NOT EXISTS INITIALLY
IF cont_dock IS INITIAL.
PERFORM create_alv.
ENDIF.ENDMODULE. " STATUS_0600 OUTPUT* 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 as shown below
*&---------------------------------------------------------------------*
*& Module USER_COMMAND_0600 INPUT
*&---------------------------------------------------------------------*
MODULE user_command_0600 INPUT.
CASE ok_code.
WHEN 'SUBMIT'.
*TO GET THE CURRENT FIELDCATALOGUE FROM THE FRONTEND
CALL METHOD cont_alvgd->set_frontend_fieldcatalog
EXPORTING
it_fieldcatalog = it_fielcat.
*refresh the alv
CALL METHOD cont_alvgd->refresh_table_display.
*to Send Buffered Automation Queue to Frontend
CALL METHOD cl_gui_cfw=>flush.*Exit button clicked to leave the program
WHEN 'EXIT'.
LEAVE PROGRAM. ENDCASE.ENDMODULE. " USER_COMMAND_0600 INPUT*&---------------------------------------------------------------------*
*& Form CREATE_ALV
*&---------------------------------------------------------------------*FORM create_alv.*create a docking container and dock the control at the botton
CREATE OBJECT cont_dock
EXPORTING
dynnr = '600'
extension = 100
side = cl_gui_docking_container=>dock_at_bottom.*create the alv grid for display the table
CREATE OBJECT cont_alvgd
EXPORTING
i_parent = cont_dock.*create custome container for alv
CREATE OBJECT cont_cust
EXPORTING
container_name = 'CCONT'.
*create alv editable grid
CREATE OBJECT cont_editalvgd
EXPORTING
i_parent = cont_cust.* register events for the editable alv
CREATE OBJECT event_receiver.
SET HANDLER event_receiver->handle_data_changed FOR cont_editalvgd. CALL METHOD cont_editalvgd->register_edit_event
EXPORTING
i_event_id = cl_gui_alv_grid=>mc_evt_modified.*building the fieldcatalogue for the initial display
PERFORM build_fieldcat CHANGING it_fielcat it_fielcatalogue.*building the fieldcatalogue after the user has changed it
PERFORM change_fieldcat CHANGING it_fielcatalogue.*fetch data from the table
PERFORM fetch_data.* Get excluding functions for the alv editable tool bar APPEND cl_gui_alv_grid=>mc_fc_loc_append_row TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_loc_insert_row TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_loc_cut TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_sort TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_sort_asc TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_sort_dsc TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_subtot TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_sum TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_graph TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_info TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_print TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_filter TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_views TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_mb_export TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_mb_sum TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_mb_sum TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_mb_paste TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_find TO it_excl_func.
APPEND cl_gui_alv_grid=>mc_fc_loc_copy TO it_excl_func.
*Alv display for the T006 table at the bottom
CALL METHOD cont_alvgd->set_table_for_first_display
CHANGING
it_outtab = it_t006[]
it_fieldcatalog = it_fielcat[].
* optimize column width of grid displaying fieldcatalog
it_layout-cwidth_opt = 'X'.* Get fieldcatalog of table T006 - alv might have
* modified it after passing.
CALL METHOD cont_alvgd->get_frontend_fieldcatalog
IMPORTING
et_fieldcatalog = it_fielcat[].*to Send Buffered Automation Queue to Frontend CALL METHOD cl_gui_cfw=>flush.* Display fieldcatalog of table T006 in editable alv grid
CALL METHOD cont_editalvgd->set_table_for_first_display
EXPORTING
is_layout = it_layout
it_toolbar_excluding = it_excl_func
CHANGING
it_outtab = it_fielcat[]
it_fieldcatalog = it_fielcatalogue[].
ENDFORM. " CREATE_alv
*&---------------------------------------------------------------------*
*& Form fetch_data
*&---------------------------------------------------------------------*
FORM fetch_data.* select data of T006
SELECT * FROM t006 INTO TABLE it_t006 UP TO 50 ROWS.
ENDFORM. " fetch_data
*&---------------------------------------------------------------------*
*& Form BUILD_FIELDCAT
*&---------------------------------------------------------------------*
FORM build_fieldcat CHANGING it_fldcat TYPE lvc_t_fcat
it_fcat TYPE lvc_t_fcat.
* Fieldcatalog for table T006: it_fldcat
* to generate the fields automatically CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
EXPORTING
i_structure_name = 'T006'
CHANGING
ct_fieldcat = it_fldcat[]
EXCEPTIONS
inconsistent_interface = 1
program_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.*----------------------------------------------------
* Fieldcatalog for table LVC_T_FCAT:it_fcat
*----------------------------------------------------
* Generate fieldcatalog of fieldcatalog structure.
* This fieldcatalog is used to display fieldcatalog 'it_fldcat'
* on the top of the screen. CALL FUNCTION 'LVC_FIELDCATALOG_MERGE'
EXPORTING
i_structure_name = 'LVC_S_FCAT'
CHANGING
ct_fieldcat = it_fcat[]
EXCEPTIONS
inconsistent_interface = 1
program_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.
ENDFORM. " BUILD_FIELDCAT
*&---------------------------------------------------------------------*
*& Form CHANGE_FIELDCAT
*&---------------------------------------------------------------------*
*after the user has modified the fieldcatalogue we build another fieldcat
*for the modified alv display
FORM change_fieldcat CHANGING it_fcat TYPE lvc_t_fcat. DATA ls_fcat TYPE lvc_s_fcat. LOOP AT it_fcat INTO ls_fcat.
ls_fcat-coltext = ls_fcat-fieldname.
ls_fcat-edit = 'X'. IF ls_fcat-fieldname = 'COL_POS' OR ls_fcat-fieldname = 'FIELDNAME'.
ls_fcat-key = 'X'.
ENDIF. MODIFY it_fcat FROM ls_fcat.
ENDLOOP.ENDFORM. " CHANGE_FIELDCAT
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