Posted: Sat Sep 15, 2007 8:36 pm Post subject: Grid ALV List Viewer: Display table with Print event
Display table and added print events handling for printing the table contents using grid "Print" button.
Print events:
print_top_of_list
print_top_of_page
print_end_of_page
print_end_of_list
Used object:
cl_gui_alv_grid
cl_gui_splitter_container
cl_gui_container
Code:
program z.
*---------------------------------------------------------------------*
* Constants *
*---------------------------------------------------------------------*
*---------------------------------------------------------------------*
* Types *
*---------------------------------------------------------------------*
class lcl_event_receiver definition deferred.
class cl_gui_cfw definition load.
*---------------------------------------------------------------------*
* Data *
*---------------------------------------------------------------------*
* It is important: this internal table MUST be declared as global
* data (not in the fill_grid method), otherwise
* some cl_gui_alv_grid buttons will not work.
* ...I don't know why...
data it_t001 type table of t001.
*---------------------------------------------------------------------*
* Classes *
*---------------------------------------------------------------------*
*---------------------------------------------------------------------*
* Definitions *
*---------------------------------------------------------------------*
*---------------------------------------------------------------------*
class screen_init definition create private.
public section.
class-methods init_screen.
methods constructor.
private section.
data: splitter type ref to cl_gui_splitter_container,
grid type ref to cl_gui_alv_grid,
gs_print type lvc_s_prnt,
gs_layout type lvc_s_layo,
e_handler type ref to lcl_event_receiver.
methods fill_grid.
endclass.
*---------------------------------------------------------------------*
class lcl_event_receiver definition.
public section.
* methods for print events.
methods: handle_top_of_page for event print_top_of_page
of cl_gui_alv_grid,
handle_end_of_page for event print_end_of_page
of cl_gui_alv_grid,
handle_top_of_list for event print_top_of_list
of cl_gui_alv_grid,
handle_end_of_list for event print_end_of_list
of cl_gui_alv_grid.
private section.
data: pagenum type i.
endclass.
*---------------------------------------------------------------------*
*---------------------------------------------------------------------*
* Implementations *
*---------------------------------------------------------------------*
*---------------------------------------------------------------------*
class screen_init implementation.
method init_screen.
data screen type ref to screen_init.
create object screen.
endmethod.
method constructor.
* It is important: grid MUST have container as parent,
* not the cl_gui_container=>screen0
* otherwise after pressing "Print" button
* grid will not hide and printer options window
* will be invisible behind the grid.
* ...I don't know why...
data container type ref to cl_gui_container.
create object splitter
exporting parent = cl_gui_container=>screen0
rows = 1
columns = 1.
call method splitter->set_border
exporting border = cl_gui_cfw=>false.
call method splitter->set_column_mode
exporting mode = splitter->mode_absolute.
container = splitter->get_container( row = 1 column = 1 ).
create object grid exporting i_parent = container.
gs_layout-grid_title = 'Companies table T001.'.
* reserve two lines for the print_end_of_page event
gs_print-reservelns = 2.
call method me->fill_grid.
create object e_handler.
set handler e_handler->handle_top_of_list for grid.
set handler e_handler->handle_top_of_page for grid.
set handler e_handler->handle_end_of_list for grid.
set handler e_handler->handle_end_of_page for grid.
endmethod.
method fill_grid.
select * from t001 into table it_t001.
call method grid->set_table_for_first_display
exporting i_structure_name = 'T001'
is_print = gs_print
is_layout = gs_layout
changing it_outtab = it_t001.
endmethod.
endclass.
*---------------------------------------------------------------------*
class lcl_event_receiver implementation.
* event handler methods for print events. use write to provide output.
method handle_top_of_page.
add 1 to pagenum.
write: / 'event: print_top_of_page #', pagenum,
' program:', sy-cprog.
call method cl_gui_cfw=>flush.
endmethod.
method handle_end_of_page.
write: / 'event: print_end_of_page #', pagenum,
' program:', sy-cprog.
call method cl_gui_cfw=>flush.
endmethod.
method handle_top_of_list.
write: / 'event: print_top_of_list, program:', sy-cprog.
call method cl_gui_cfw=>flush.
endmethod.
method handle_end_of_list.
write: / 'event: print_end_of_list, program:', sy-cprog.
call method cl_gui_cfw=>flush.
endmethod.
endclass.
*---------------------------------------------------------------------*
*---------------------------------------------------------------------*
* Program execution *
*---------------------------------------------------------------------*
load-of-program.
call screen 100.
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