Saturday, December 18, 2010
We use HTML_TOP_OF_PAGE event to display TOP OF PAGE for ALV GRID Display.

REPORT  ztest_alv_grid.
TABLES:t001.
"Types
TYPES:
  BEGIN OF t_1001,
    bukrs TYPE t001-bukrs,
    butxt TYPE t001-butxt,
    ort01 TYPE t001-ort01,
    land1 TYPE t001-land1,
  END OF t_1001.
"Work area
DATA:
  w_t001 TYPE t_1001.
"Internal table
DATA:
  i_t001 TYPE STANDARD TABLE OF t_1001.

*&---------------------------------------------------------------------*
" ALV Declarations
*----------------------------------------------------------------------*
* Types Pools
TYPE-POOLS:
  slis.
* Types
TYPES:
  t_fieldcat         TYPE slis_fieldcat_alv,
  t_events           TYPE slis_alv_event,
  t_layout           TYPE slis_layout_alv.
* Workareas
DATA:
  w_fieldcat         TYPE t_fieldcat,
  w_events           TYPE t_events,
  w_layout           TYPE t_layout.
* Internal Tables
DATA:
  i_fieldcat         TYPE STANDARD TABLE OF t_fieldcat,
  i_events           TYPE STANDARD TABLE OF t_events.
*&---------------------------------------------------------------------*
*&    start of selection
*&---------------------------------------------------------------------*
START-OF-SELECTION.
  PERFORM get_data.

*&---------------------------------------------------------------------*
*&    end-of-selection.
*&---------------------------------------------------------------------*
END-OF-SELECTION.

  PERFORM build_fieldcatlog.
  PERFORM build_layout.
  PERFORM list_display.
*&---------------------------------------------------------------------*
*&      Form  get_data
*&---------------------------------------------------------------------*
FORM get_data .

  SELECT bukrs
  butxt
  ort01
  land1
  FROM t001
  INTO TABLE i_t001
  UP TO 30 ROWS.

ENDFORM.                    " get_data
*&---------------------------------------------------------------------*
*&      Form  build_fieldcatlog
*&---------------------------------------------------------------------*
FORM build_fieldcatlog .
  CLEAR:w_fieldcat,i_fieldcat[].

  PERFORM build_fcatalog USING:
  'BUKRS' 'I_T001' 'BUKRS',
  'BUTXT' 'I_T001' 'BUTXT',
  'ORT01' 'I_T001' 'ORT01',
  'LAND1' 'I_T001' 'LAND1'.

ENDFORM.                    "BUILD_FIELDCATLOG
*&---------------------------------------------------------------------*
*&      Form  BUILD_FCATALOG
*&---------------------------------------------------------------------*
FORM build_fcatalog USING l_field l_tab l_text.

  w_fieldcat-fieldname      = l_field.
  w_fieldcat-tabname        = l_tab.
  w_fieldcat-seltext_m      = l_text.

  APPEND w_fieldcat TO i_fieldcat.
  CLEAR w_fieldcat.

ENDFORM.                    " build_fieldcatlog
*&---------------------------------------------------------------------*
*&      Form  build_layout
*&---------------------------------------------------------------------*
FORM build_layout .

  w_layout-colwidth_optimize = 'X'.
  w_layout-zebra             = 'X'.

ENDFORM.                    " build_layout
*&---------------------------------------------------------------------*
*&      Form  list_display
*&---------------------------------------------------------------------*
FORM list_display .
  DATA:
  l_program TYPE sy-repid.
  l_program = sy-repid.

  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
    EXPORTING
      i_callback_program          = l_program
      i_callback_html_top_of_page = 'HTML_TOP_OF_PAGE'
      is_layout                   = w_layout
      it_fieldcat                 = i_fieldcat
    TABLES
      t_outtab                    = i_t001
    EXCEPTIONS
      program_error               = 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.                    " list_display
*&---------------------------------------------------------------------*
*&      Form  top_of_page
*&---------------------------------------------------------------------*
FORM top_of_page.
  DATA :
  li_header TYPE slis_t_listheader,
  w_header  LIKE LINE OF li_header.
  DATA:
  l_date TYPE char10.
  WRITE sy-datum TO l_date.
  w_header-typ  = 'H'.
  CONCATENATE sy-repid ':' 'From Date' l_date INTO w_header-info SEPARATED BY space.
  APPEND w_header TO li_header.
  CLEAR w_header.

  w_header-typ  = 'S'.
  w_header-info = sy-title.
  APPEND w_header TO li_header.
  CLEAR w_header.

  w_header-typ  = 'A'.
  w_header-info = sy-uname.
  APPEND w_header TO li_header.
  CLEAR w_header.

  CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
    EXPORTING
      it_list_commentary = li_header.

ENDFORM.                    "top_of_page
*-----------------------------------------------------------------*
*       FORM html_top_of_page                                     *
*-----------------------------------------------------------------*
FORM html_top_of_page USING top TYPE REF TO cl_dd_document.
  DATA: l_text(255) TYPE c.
  DO 180 TIMES.
    l_text+sy-index(1) = '*'.
  ENDDO.
  CALL METHOD top->add_text
    EXPORTING
      text      = 'Here you can write long text.but when use TOP_OF_PAGE its length only 60 Chars.'
      sap_style = 'heading'.
  CALL METHOD top->add_gap
    EXPORTING
      width = 200.
  CALL METHOD top->add_picture
    EXPORTING
      picture_id = 'ENJOYSAP_LOGO'.
  CALL METHOD top->new_line( ).
  CALL METHOD top->add_text
    EXPORTING
      text = l_text.
ENDFORM.                    "html_top_of_page

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