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Adding custom buttons on ALV grid controls



 
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PostPosted: Fri Nov 23, 2007 10:48 pm    Post subject: Adding custom buttons on ALV grid controls Reply with quote
This report shows you how to add a custom button to your ALV grid control.
Code:
 

DATA

* Predefine a local class for event handling to allow the

* declaration of a reference variable before the class is defined.

CLASS lcl_event_receiver DEFINITION DEFERRED.

 

DATA:  custom_container1 TYPE REF TO cl_gui_custom_container,

       cont_on_main   TYPE scrfname VALUE 'ALV_GRID',

       grid1  TYPE REF TO cl_gui_alv_grid,

       event_receiver TYPE REF TO lcl_event_receiver,

       okcode LIKE sy-ucomm.

 

DATA:   gt_fieldcat         TYPE slis_t_fieldcat_alv,

        gt_fieldcat1        TYPE lvc_t_fcat,

        gs_layout           TYPE slis_layout_alv,

        gs_layout1          TYPE lvc_s_layo,

        gs_print            TYPE slis_print_alv,

        gt_sort             TYPE slis_t_sortinfo_alv,

        gt_sp_group         TYPE slis_t_sp_group_alv,

        gt_events           TYPE slis_t_event,

        gt_list_top_of_page TYPE slis_t_listheader.

 

DATA:t_out TYPE TABLE OF zstruct,

     t_out_wa LIKE zstruct.

 

****************************************************************

* LOCAL CLASSES: Definition

****************************************************************

*===============================================================

* class lcl_event_receiver: local class to

*                         define and handle own functions.

* Definition:

* ~~~~~~~~~~~

CLASS lcl_event_receiver DEFINITION.

 

  PUBLIC SECTION.

 

    METHODS:

    handle_toolbar

        FOR EVENT toolbar OF cl_gui_alv_grid

            IMPORTING e_object e_interactive,

 

    handle_user_command

        FOR EVENT user_command OF cl_gui_alv_grid

            IMPORTING e_ucomm.

 

  PRIVATE SECTION.

 

ENDCLASS.

 

****************************************************************

* LOCAL CLASSES: Implementation

****************************************************************

*===============================================================

* class lcl_event_receiver (Implementation)

CLASS lcl_event_receiver IMPLEMENTATION.

 

  METHOD handle_toolbar.

* § 2.In event handler method for event TOOLBAR: Append own functions

*   by using event parameter E_OBJECT.

    DATA: ls_toolbar  TYPE stb_button.

*....................................................................

* E_OBJECT of event TOOLBAR is of type REF TO CL_ALV_EVENT_TOOLBAR_SET.

* This class has got one attribute, namly MT_TOOLBAR, which

* is a table of type TTB_BUTTON. One line of this table is

* defined by the Structure STB_BUTTON (see data deklaration above).

*

 

* A remark to the flag E_INTERACTIVE:

* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

*         'e_interactive' is set, if this event is raised due to

*         the call of 'set_toolbar_interactive' by the user.

*         You can distinguish this way if the event was raised

*         by yourself or by ALV

*         (e.g. in method 'refresh_table_display').

*         An application of this feature is still unknown... :-)

 

* append a separator to normal toolbar

    CLEAR ls_toolbar.

    MOVE 3 TO ls_toolbar-butn_type.

    APPEND ls_toolbar TO e_object->mt_toolbar.

* append an icon to show booking table

    CLEAR ls_toolbar.

    MOVE 'COMMENT' TO ls_toolbar-function.

    MOVE icon_annotation TO ls_toolbar-icon.

    MOVE 'Insert Comment'(001) TO ls_toolbar-quickinfo.

    MOVE 'Notes'(004) TO ls_toolbar-text.

    MOVE ' ' TO ls_toolbar-disabled.

    APPEND ls_toolbar TO e_object->mt_toolbar.

    MOVE 'MATNR' TO ls_toolbar-function.

    MOVE icon_material TO ls_toolbar-icon.

    MOVE 'View Material'(002) TO ls_toolbar-quickinfo.

    MOVE 'Material'(003) TO ls_toolbar-text.

    MOVE ' ' TO ls_toolbar-disabled.

    APPEND ls_toolbar TO e_object->mt_toolbar.

 

 

  ENDMETHOD.

*-------------------------------------------------------------------

  METHOD handle_user_command.

* § 3.In event handler method for event USER_COMMAND: Query your

*   function codes defined in step 2 and react accordingly.

 

    DATA: lt_rows TYPE lvc_t_row.

 

    CASE e_ucomm.

      WHEN 'COMMENT'.

        CALL METHOD grid1->get_selected_rows

                 IMPORTING et_index_rows = lt_rows.

 

        CALL METHOD cl_gui_cfw=>flush.

 

        IF sy-subrc NE 0.

* add your handling, for example

          CALL FUNCTION 'POPUP_TO_INFORM'

               EXPORTING

                    titel = g_repid

                    txt2  = sy-subrc

                    txt1  = 'Error in Flush'(500).

        ELSE.

          PERFORM get_comment TABLES lt_rows.  “Perform action

        ENDIF.

 

      WHEN 'MATNR'.

        CALL METHOD grid1->get_selected_rows

                 IMPORTING et_index_rows = lt_rows.

 

        CALL METHOD cl_gui_cfw=>flush.

 

        IF sy-subrc NE 0.

* add your handling, for example

          CALL FUNCTION 'POPUP_TO_INFORM'

               EXPORTING

                    titel = g_repid

                    txt2  = sy-subrc

                    txt1  = 'Error in Flush'(500).

        ELSE.

              READ TABLE lt_rows INDEX 1.

              IF sy-subrc = 0.

                     READ TABLE t_out INTO t_out_wa INDEX lt_rows-index.

                     IF sy-subrc = 0.

                           SET PARAMETER ID 'MAT' FIELD t_out_wa-matnr.

                           CALL TRANSACTION 'MM03' AND SKIP FIRST SCREEN. "View Material

                     ELSE.

                           MESSAGE i999(b1) WITH 'Entry not found!'.

                     ENDIF.

              ELSE.

                     MESSAGE i999(b1) WITH 'Please select a line first!'.

              ENDIF.

        ENDIF.

    ENDCASE.

 

  ENDMETHOD.                           "handle_user_command

*-----------------------------------------------------------------

ENDCLASS.

*

* lcl_event_receiver (Implementation)

*===================================================================

PBO

process before output.

 MODULE STATUS_2000.

 module init_data.

 module create_container.

 

*&---------------------------------------------------------------------*

*&      Module  create_container  OUTPUT

*&---------------------------------------------------------------------*

module create_container output.

  if custom_container1 is initial.

* create a custom container control for our ALV Control

    create object custom_container1

        exporting

            container_name = cont_on_main

        exceptions

            cntl_error = 1

            cntl_system_error = 2

            create_error = 3

            lifetime_error = 4

            lifetime_dynpro_dynpro_link = 5.

    if sy-subrc ne 0.

* add your handling, for example

      call function 'POPUP_TO_INFORM'

           exporting

                titel = g_repid

                txt2  = sy-subrc

                txt1  = 'The control could not be created'(001).

    endif.

 

* create an instance of alv control

    create object grid1

           exporting i_parent = custom_container1.

 

* allow to select single lines - Multilines = A

    gs_layout1-sel_mode = 'B'.

 

    t_out[] = t_out_mat[].

    gt_fieldcat1[] = gt_fieldcat[].

 

* ZSTRUCT needs to be a structure or table in the data dictionary.

* The data elements are used for the column headings of your table control.

* T_OUT is your table for data.

    call method grid1->set_table_for_first_display

         exporting i_structure_name = 'ZSTRUCT'

                   is_layout        = gs_layout1

         changing  it_outtab        = t_out.

 

* ->Create Object to receive events and link them to handler methods.

* When the ALV Control raises the event for the specified instance

* the corresponding method is automatically called.

*

    create object event_receiver.

    set handler event_receiver->handle_user_command for grid1.

    set handler event_receiver->handle_toolbar for grid1.

 

* § 4.Call method 'set_toolbar_interactive' to raise event TOOLBAR.

    call method grid1->set_toolbar_interactive.

  endif.

  call method cl_gui_control=>set_focus exporting control = grid1.

 

endmodule.                 " create_container  OUTPUT
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