Run OO-ALV in Background

I'm using CL_GUI_ALV_GRID->SET_TABLE_FOR_FIRST_DISPLAY and Splittter Containers to displays my ALV Output with TOP-OF-PAGE.

I'm unable to run this program in background. Can you please suggest what steps do I need to include to run this program in background.

My Code:

    DATA: OREF_CONTAINER      TYPE REF TO     CL_GUI_CUSTOM_CONTAINER,

               OREF_GRID                 TYPE REF TO      CL_GUI_ALV_GRID,

               OREF_DYNDOC_ID      TYPE REF TO     CL_DD_DOCUMENT,

               OREF_SPLITTER          TYPE REF TO     CL_GUI_SPLITTER_CONTAINER,

               OREF_PARENT_GRID   TYPE REF TO     CL_GUI_CONTAINER,

               OREF_PARENT_HTML  TYPE REF TO     CL_GUI_CONTAINER.

    DATA: ls_layout       TYPE lvc_s_layo,
               lt_fieldcatalog TYPE lvc_t_fcat.

   * Create Container reference
  IF oref_container IS NOT BOUND.
    CREATE OBJECT oref_container
      EXPORTING
        container_name = 'CONTAINER'.
  ENDIF.

* This is for top of page
  "Create TOP-Document
  IF oref_dyndoc_id IS NOT BOUND.
    CREATE OBJECT oref_dyndoc_id
      EXPORTING
        style = 'ALV_GRID'.
  ENDIF.

* Create Splitter for custom_container
  IF oref_splitter IS NOT BOUND.
    CREATE OBJECT oref_splitter
      EXPORTING
        parent  = oref_container
        rows    = 2
        columns = 1.
  ENDIF.

* Split the custom_container to two containers and move the reference
* to receiving containers oref_parent_html and oref_parent_grid
  "Allocating the space for grid and top of page
  CALL METHOD oref_splitter->get_container
    EXPORTING
      row       = 1
      column    = 1
    RECEIVING
      container = oref_parent_html.
  CALL METHOD oref_splitter->get_container
    EXPORTING
      row       = 2
      column    = 1
    RECEIVING
      container = oref_parent_grid.

* Set height for oref_parent_html
  CALL METHOD oref_splitter->set_row_height
    EXPORTING
      id     = 1
      height = 25.

* Need to specify parent as splitter part which we alloted for grid
  IF oref_grid IS NOT BOUND.
    CREATE OBJECT oref_grid
      EXPORTING
        i_parent = oref_parent_grid.
  ENDIF.

  SET HANDLER top_of_page FOR oref_grid.

* setting focus for created grid control
  CALL METHOD cl_gui_control=>set_focus
    EXPORTING
      control = oref_grid.

*-Build Layout
  ls_layout = build_layout( ).

*-Build Fieldcatalog
  lt_fieldcatalog = build_fieldcatalog( ).

*- Grid display
  CALL METHOD oref_grid->set_table_for_first_display
    EXPORTING
      is_layout                     = ls_layout
    CHANGING
      it_fieldcatalog               = lt_fieldcatalog
      it_outtab                     = ct_table
    EXCEPTIONS
      invalid_parameter_combination = 1
      program_error                 = 2
      too_many_lines                = 3
      OTHERS                        = 4.
  IF sy-subrc <> 0.
  ENDIF.

* Initializing document
  CALL METHOD oref_dyndoc_id->initialize_document.

* Processing events
  CALL METHOD oref_grid->list_processing_events
    EXPORTING
      i_event_name = 'TOP_OF_PAGE'
      i_dyndoc_id  = oref_dyndoc_id.

Thanks & Regards,

Adithya M.