Thursday, 6 April 2017

ALV Using CL_SALV_TABLE

The following program creates and displays ALV using CL_SALV_TABLE class.
*&---------------------------------------------------------------------*
*& Report  ZDEMO11
*&
*&---------------------------------------------------------------------*
*&
*& ALV Using CL_SALV_TABLE
*&---------------------------------------------------------------------*
REPORT zdemo11.

TYPES:BEGIN OF gty_emp,
        id   TYPE char10,
        name TYPE char10,
      END OF gty_emp.

DATA: gt_emp  TYPE TABLE OF gty_emp,
      gv_data TYPE REF TO data
      .
FIELD-SYMBOLS: <fs_emp> LIKE LINE OF gt_emp.

START-OF-SELECTION.
  REFRESH: gt_emp.
  CLEAR: gv_data.

  PERFORM populate_record.
  PERFORM create_display_alv.

*&---------------------------------------------------------------------*
*&      Form  POPULATE_RECORD
*&---------------------------------------------------------------------*
*       text
*----------------------------------------------------------------------*
FORM populate_record .

  CREATE DATA gv_data LIKE LINE OF gt_emp.
  ASSIGN gv_data->* TO <fs_emp>.

  <fs_emp>-id   = '1'.
  <fs_emp>-name = 'A'.
  APPEND <fs_emp> TO gt_emp.

  <fs_emp>-id   = '2'.
  <fs_emp>-name = 'B'.
  APPEND <fs_emp> TO gt_emp.

ENDFORM.

*----------------------------------------------------------------------*
*       CLASS cl_event_handler DEFINITION
*----------------------------------------------------------------------*
*
*----------------------------------------------------------------------*
CLASS cl_event_handler DEFINITION.
  PUBLIC SECTION.
    CLASS-METHODS on_added_function               " ADDED_FUNCTION FOR USER_COMMAND
      FOR EVENT if_salv_events_functions~added_function
                  OF cl_salv_events_table
      IMPORTING e_salv_function.
ENDCLASS.                    "cl_event_handler DEFINITION

*----------------------------------------------------------------------*
*       CLASS cl_event_handler IMPLEMENTATION
*----------------------------------------------------------------------*
*
*----------------------------------------------------------------------*
CLASS cl_event_handler IMPLEMENTATION.
  METHOD on_added_function.

*    ADD USER COMMAND HERE: FOR EXAMPLE IF THERE IS AN EXPORT BUTTON FOR XLS
*    YOU CAN WRITE THE CODE LIKE THIS:

*    IF e_salv_function EQ '&XLS'.  "&XLS IS THE BUTTON FUNCTION CODE
*      PERFORM export_xls.          "WRITE ALL THE FUNCTIONALITY IN THE PERFORM
*    ENDIF.

  ENDMETHOD.                    "on_added_function
ENDCLASS.                    "cl_event_handler IMPLEMENTATION

*&---------------------------------------------------------------------*
*&      Form  CREATE_DISPLAY_ALV
*&---------------------------------------------------------------------*
*       CREATING AND DISPLAYING ALV (NON-EDITABLE)
*----------------------------------------------------------------------*
FORM create_display_alv .

  DATA: lv_col_msg TYPE REF TO cx_salv_not_found,
        lv_alv_msg TYPE REF TO cx_salv_msg,
        lo_alv     TYPE REF TO cl_salv_table,
        lo_columns TYPE REF TO cl_salv_columns_table,
        lo_column  TYPE REF TO cl_salv_column,
        lo_events  TYPE REF TO cl_salv_events_table
        .
  TRY .
      CALL METHOD cl_salv_table=>factory
        IMPORTING
          r_salv_table = lo_alv
        CHANGING
          t_table      = gt_emp.

**********************************************************************
      lo_events = lo_alv->get_event( ).
      SET HANDLER cl_event_handler=>on_added_function FOR lo_events.
**********************************************************************


*********************** SETTING THE FIELDCATALOG ***********************
      TRY .
          lo_columns  = lo_alv->get_columns( ).
          lo_columns->set_optimize( ).

          lo_column = lo_columns->get_column( 'ID' ). "COLUMN NAME
          lo_column->set_short_text( 'ID' ).          "SHORT TEXT
          lo_column->set_medium_text( 'EMP. ID' ).    "MEDIUM TEXT
          lo_column->set_long_text( 'Employee ID' ).  "LONG TEXT

          lo_column = lo_columns->get_column( 'NAME' ). "COLUMN NAME
          lo_column->set_short_text( 'Name' ).          "SHORT TEXT
          lo_column->set_medium_text( 'EMP. Name' ).    "MEDIUM TEXT
          lo_column->set_long_text( 'Employee Name' ).  "LONG TEXT

        CATCH cx_salv_not_found INTO lv_col_msg.
*          IMPLEMENT ERROR HANDLING MECHANISM
      ENDTRY.
********************** #SETTING THE FIELDCATALOG ***********************

************************* SETTING PF_STATUS ***************************
      TRY.
          CALL METHOD lo_alv->set_screen_status
            EXPORTING
              report        = sy-repid
              pfstatus      = 'PF_STATUS'
              set_functions = lo_alv->c_functions_all.
      ENDTRY.
************************* #SETTING PF_STATUS **************************

      lo_alv->display( ).

    CATCH cx_salv_msg INTO lv_alv_msg.
*     IMPLEMENT ERROR HANDLING MECHANISM
  ENDTRY.
ENDFORM.                    " DISPLAY_ALV

For a detail understanding, you can visit the following links:

http://www.kerum.pl/infodepot/00007

http://abapmentor.expertise-team.com/post/display-alv-list-easily-in-abap-using-cl-salv-table-part-ii-enable-layout-settings.aspx

http://abapmentor.expertise-team.com/post/display-alv-list-easily-in-abap-using-cl-salv-table-part-v-set-toolbar.aspx




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