ALV的HTML抬头内容根据ALV事件更改

REPORT  z_barry_alv_header .

TABLES : t001.
TYPE-POOLS: slis.

DATA : w_repid LIKE sy-repid.
TYPES : BEGIN OF ty_comp.
        INCLUDE STRUCTURE t001.
TYPES : END OF ty_comp.

DATA: wa_layout  TYPE slis_layout_alv.

DATA: it_fieldcat TYPE slis_t_fieldcat_alv,
      wa_fieldcat TYPE slis_fieldcat_alv.

DATA : it_comp TYPE TABLE OF ty_comp WITH HEADER LINE.

INITIALIZATION.
  w_repid = sy-repid.

START-OF-SELECTION.

  SELECT * FROM t001 INTO TABLE it_comp.
  it_comp-butxt = '双击ALV的行'.

  CALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE'
    EXPORTING
      i_program_name         = w_repid
      i_internal_tabname     = 'IT_COMP'
      i_structure_name       = 'T001'
      i_inclname             = w_repid
    CHANGING
      ct_fieldcat            = it_fieldcat[]
    EXCEPTIONS
      inconsistent_interface = 1
      program_error          = 2
      OTHERS                 = 3.

  CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
    EXPORTING
      i_callback_program          = w_repid
      i_callback_html_top_of_page = 'HTML_TOP_OF_PAGE'
      i_callback_user_command     = 'USER_COMMAND'
      is_layout                   = wa_layout
      it_fieldcat                 = it_fieldcat
    TABLES
      t_outtab                    = it_comp
    EXCEPTIONS
      program_error               = 1
      OTHERS                      = 2.

*&---------------------------------------------------------------------*
*&      Form  html_top_of_page
*&---------------------------------------------------------------------*
FORM html_top_of_page USING w_doc TYPE REF TO cl_dd_document.
  DATA: code(255) TYPE c .
  DATA: sdydo_html_table TYPE sdydo_html_line OCCURS 0.
  DATA: wa LIKE LINE OF sdydo_html_table.

  CALL METHOD w_doc->set_document_background
    EXPORTING
      picture_id = 'Z_BTZ'.
  CLEAR code.
  REFRESH w_doc->html_table.
  wa-line = '' &
            '' &
            '测试ALVHeader显示HTML


'.
  APPEND wa TO w_doc->html_table.

  CONCATENATE ' '
              it_comp-butxt '


' INTO wa-line.
  APPEND wa TO w_doc->html_table.

  wa-line = ' '.
  APPEND wa TO w_doc->html_table.

ENDFORM.                    "HTML_TOP_OF_PAGE

*&---------------------------------------------------------------------*
*&      Form  user_command
*&---------------------------------------------------------------------*
FORM user_command USING r_ucomm LIKE sy-ucomm
                        rs_selfield TYPE slis_selfield.
  CASE r_ucomm.
    WHEN '&IC1'.
      READ TABLE it_comp INDEX rs_selfield-tabindex.
    WHEN 'EXIT'.
      LEAVE PROGRAM.
  ENDCASE.
ENDFORM. "user_com