REPORT zhfnk_alvtest.
*--------------------------------------------------------------------
* This example demonstrates a solution to a problem
* that arises when you want to include the number of pages in
* an ALV report (E.g. Pageno xxx of yyy), and choses to include
* ALV statistics when you print the report.
* When you count the total number of pages it is usually
* calculated from the number of lines in the report table,
* number of lines in the report header and the number of lines
* on each report page. However, if you include the ALV statistics when
* you print the report, this page will not be included in the total
* number of pages.
*The solution demonstrated below, is to use the ALV events
* Top Of Page, Top Of List and End Of List.
*--------------------------------------------------------------------
TYPE-POOLS: slis.
TYPES:
BEGIN OF t_makt,
matnr LIKE makt-matnr,
maktx LIKE makt-maktx,
END OF t_makt.
DATA:
it_makt TYPE STANDARD TABLE OF t_makt,
wa_makt TYPE t_makt.
******************************************************************'
* Data declarations for the ALV grid
******************************************************************'
DATA:
r_grid TYPE REF TO cl_gui_alv_grid,
alv_fieldcat TYPE slis_t_fieldcat_alv,
wa_alv_fieldcat TYPE slis_fieldcat_alv,
alv_layout TYPE slis_layout_alv,
gt_events TYPE slis_t_event.
******************************************************************'
* Other data declarations
******************************************************************'
DATA:
gd_repid LIKE sy-repid,
g_first_top_of_page(1) TYPE c, "Flag for first top of page event
g_totpages(3) TYPE n,
g_pageno(3) TYPE n,
g_start_of_list(1) TYPE c.
START-OF-SELECTION.
g_first_top_of_page = 'X'.
CLEAR g_start_of_list.
PERFORM alv_setup.
PERFORM build_events.
PERFORM read_data.
END-OF-SELECTION.
PERFORM display_alv.
*&---------------------------------------------------------------------*
*& Form read_data
*&---------------------------------------------------------------------*
FORM read_data.
SELECT matnr maktx
FROM makt
INTO TABLE it_makt up to 60 rows
WHERE spras = 'E'.
ENDFORM. " read_data
*&---------------------------------------------------------------------*
*& Form alv_setup
*&---------------------------------------------------------------------*
* Setup of the columns in the ALV grid
*----------------------------------------------------------------------*
FORM alv_setup.
CLEAR wa_alv_fieldcat.
REFRESH alv_fieldcat.
* Matnr field
wa_alv_fieldcat-key = 'X'. "This is a key column
wa_alv_fieldcat-fieldname = 'MATNR'. "Name of the table eld
wa_alv_fieldcat-seltext_s = 'Matnr'. "Short column heading
wa_alv_fieldcat-seltext_m = 'Material nr.'. "Medium column heading
wa_alv_fieldcat-seltext_l = 'Material number'. "Long column heading
APPEND wa_alv_fieldcat TO alv_fieldcat.
* Mat text field
wa_alv_fieldcat-key = ''. "This is not a key column
wa_alv_fieldcat-fieldname = 'MAKTX'.
wa_alv_fieldcat-seltext_s = 'Mat. txt'.
wa_alv_fieldcat-seltext_m = 'Material txt'.
wa_alv_fieldcat-seltext_l = 'Material text'.
APPEND wa_alv_fieldcat TO alv_fieldcat.
ENDFORM. " alv_setup
*&------------------------------------------------------------------*
*& Form BUILD_EVENTS
*&------------------------------------------------------------------*
* Build events tabel for function module
* REUSE_ALV_GRID_DISPLAY. The events that we are interested in are:
* Note that each event is assigned to a sub routine that is
* executed when the event is triggered
* - Top Of List - Subroutine TOP_OF_LIST
* - End Of List - END_OF_LIST
*-------------------------------------------------------------------*
FORM build_events.
DATA: l_i_event TYPE slis_alv_event.
l_i_event-name = 'TOP_OF_PAGE'.
l_i_event-form = 'TOP_OF_PAGE'.
APPEND l_i_event TO gt_events.
* DATA: ls_event TYPE slis_alv_event.
* CALL FUNCTION 'REUSE_ALV_EVENTS_GET'
* EXPORTING
* i_list_type = 0
* IMPORTING
* et_events = gt_events[].
* READ TABLE gt_events WITH KEY name = slis_ev_top_of_list
* INTO ls_event.
* IF sy-subrc = 0.
* MOVE 'TOP_OF_LIST' TO ls_event-form.
* MODIFY gt_events INDEX sy-tabix FROM ls_event.
* ENDIF.
* READ TABLE gt_events WITH KEY name = slis_ev_end_of_list
* INTO ls_event.
* IF sy-subrc = 0.
* MOVE 'END_OF_LIST' TO ls_event-form.
* MODIFY gt_events INDEX sy-tabix FROM ls_event.
* ENDIF.
ENDFORM. " BUILD_EVENTS
*&---------------------------------------------------------------------*
*& Form display_alv
*&---------------------------------------------------------------------*
* Display data in the ALV grid using function module
*----------------------------------------------------------------------*
FORM display_alv.
gd_repid = sy-repid.
* Configure layout of screen
alv_layout-colwidth_optimize = 'X'.
alv_layout-zebra = 'X'.
alv_layout-no_min_linesize = 'X'.
* Call ALV function module
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
i_callback_program = gd_repid
i_callback_top_of_page = 'TOP_OF_PAGE' "Ref to form
is_layout = alv_layout
it_fieldcat = alv_fieldcat
it_events = gt_events
i_background_id = ''
* is_print = gd_prntparams
TABLES
t_outtab = it_makt
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. " display_alv
*------------------------------------------------------------------*
* Form TOP_OF_LIST
*------------------------------------------------------------------*
* This event is triggerede once at top of the actual list,
* BUT NOT at the top of the ALV Statistics page
*------------------------------------------------------------------*
FORM top_of_list.
* Set flag that indicates that print of the ALV list has begun
g_start_of_list = 'X'.
ENDFORM. "TOP_OF_LIST
*---------------------------------------------------------------------*
* Form TOP_OF_PAGE
*---------------------------------------------------------------------*
* This event is triggered at every top of page including top of
* page inclduing the top of the ALV statistics page
*----------------------------------------------------------------------*
FORM top_of_page.
DATA: t_header TYPE slis_t_listheader,
wa_header TYPE slis_listheader,
pagno(3) TYPE n.
*---------------------------------------------------------------------
* If the list is being printed (Not didslayed) and this is the first
* time the Top Of Page event is triggered, then caculate number
* of pages for the ALV list
*---------------------------------------------------------------------
IF sy-ucomm EQ 'PRIN' AND g_first_top_of_page = 'X'.
PERFORM get_total_number_of_pages CHANGING g_totpages.
CLEAR g_first_top_of_page.
ENDIF.
* If this is a printed list
IF sy-ucomm EQ 'PRIN'.
*---------------------------------------------------------------------
* The Start Of List event has not yet been triggered. Thsi means that
* we are at the top of an ALV statistics page. Add the
* ALV statistics page to total number of pages
*---------------------------------------------------------------------
IF g_start_of_list = ' '.
g_totpages = g_totpages + 1.
ENDIF.
* Create ALV header
wa_header-typ = 'H'.
g_pageno = sy-pagno.
CONCATENATE 'Mylist page' g_pageno 'of' g_totpages
space INTO wa_header-info SEPARATED BY space.
APPEND wa_header TO t_header.
CLEAR wa_header.
CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
EXPORTING
it_list_commentary = t_header
i_logo = 'ENJOYSAP_LOGO'.
ELSE.
wa_header-typ = 'H'.
wa_header-info = 'testetet'.
APPEND wa_header TO t_header.
CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'
EXPORTING
it_list_commentary = t_header
i_logo = 'ENJOYSAP_LOGO'.
ENDIF.
ENDFORM. " top_of_page_setup
*-------------------------------------------------------------------
* Form END_OF_LIST
* Clear flags in case the user choses to reprint the report
*-------------------------------------------------------------------
FORM end_of_list.
g_first_top_of_page = 'X'.
CLEAR g_pageno.
CLEAR g_start_of_list.
ENDFORM. "END_OF_LIST
*---------------------------------------------------------------------*
* Form get_total_number_of_pages
*---------------------------------------------------------------------*
* Calcualtes the total page numbers from the number of lines in
* the header of the report and the number of entries in the
* input table
*----------------------------------------------------------------------*
FORM get_total_number_of_pages CHANGING p_total_number_of_pages.
DATA: l_tot_pages TYPE f ,
l_tot_lines TYPE i,
l_lines_per_page TYPE i,
l_number_of_header_lines TYPE i VALUE 13.
* Find number of lines in report table
DESCRIBE TABLE it_makt LINES l_tot_lines.
* Number of lines per pages excl. page header (13 lines)
l_lines_per_page = sy-linct - l_number_of_header_lines.
* Total number ofpages
* Round up the the page number to nearest integer
l_tot_pages = ceil( l_tot_lines / l_lines_per_page ).
p_total_number_of_pages = l_tot_pages.
* In case that there are no data in the report
IF p_total_number_of_pages = '0'.
p_total_number_of_pages = '1'.
ENDIF.
ENDFORM. " get_total_number_of_pages
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