topic Re: Delayed_changed_sel_callback event in Application Development and Automation Discussions

Delayed_changed_sel_callback event

Former Member — Tue, 17 Mar 2009 21:47:10 GMT

Hi.

How can I do to reduce the delay time?

Now is next to two seconds ...

Thanks in advance.

Re: Delayed_changed_sel_callback event

uwe_schieferstein — Wed, 18 Mar 2009 04:21:41 GMT

Hello Sara

The inherited method SET_DELAY_CHANGE_SELECTION of CL_GUI_ALV_GRID sets the delay time. However, this method is protected.

If you look up the class hierarchy you find a public method IF_CACHED_PROP~SET_PROP of class CL_GUI_OBJECT which is available in CL_GUI_ALV_GRID, too.

Thus, I would first call method IF_CACHED_PROP_{GET_PROP to retrieve the current setting of the delay time and then change its value using method *IF_CACHED_PROP}SET_PROP*.

Property name is: 'DelayTimeChangedSelectionEvent'


METHOD SET_DELAY_CHANGE_SELECTION .
  CALL METHOD SET_PROPERTY
   EXPORTING
     PROPERTY = 'DelayTimeChangedSelectionEvent'
     VALUE = TIME
       EXCEPTIONS
         OTHERS = 1.
    IF SY-SUBRC NE 0.
      RAISE ERROR.
    ENDIF.

ENDMETHOD.

Regards

Uwe

Re: Delayed_changed_sel_callback event

Former Member — Tue, 24 Mar 2009 18:59:23 GMT

Hi Uwe.

I test the method but I couldn't because is protected too.

Thanks any way.

Sara.

Re: Delayed_changed_sel_callback event

uwe_schieferstein — Tue, 24 Mar 2009 19:36:50 GMT

Hello Sara

Perhaps my previous answer was misleading you:


" First call GET method to see the current value
CALL METHOD go_grid->IF_CACHED_PROP~GET_PROP
  ...

" Then call SET method to change the value
CALL METHOD go_grid->IF_CACHED_PROP~SET_PROP
  ...

Regards

Uwe

Re: Delayed_changed_sel_callback event

Former Member — Thu, 26 Mar 2009 15:35:57 GMT

Hi Sara,

The other way should be just inheriting it into a local class and use its protected method.

I tried to reduce the time to 10 millisecond and it is working!! test code below.

*----------------------------------------------------------------------*
CLASS lcl_alv_wrapper DEFINITION INHERITING FROM cl_gui_alv_grid.
  PUBLIC SECTION.
    METHODS : constructor,
              set_delay_time,
              click FOR EVENT delayed_changed_sel_callback OF cl_gui_alv_grid.
ENDCLASS.                    "lcl_alv_wrapper DEFINITION

*----------------------------------------------------------------------*
CLASS lcl_alv_wrapper IMPLEMENTATION.
  METHOD constructor.
    super->constructor( i_parent = cl_gui_container=>default_screen ).
    SET HANDLER me->click FOR ALL INSTANCES.
  ENDMETHOD.                    "constructor
  METHOD set_delay_time.
    me->set_delay_change_selection( 10 ).
  ENDMETHOD.                    "set_delay_time
  METHOD click.
    MESSAGE 'Hi' TYPE 'I'.
  ENDMETHOD.                    "click
ENDCLASS.                    "lcl_alv_wrapper IMPLEMENTATION

DATA : grid    TYPE REF TO lcl_alv_wrapper,
       table   TYPE STANDARD TABLE OF makt.


PARAMETER dummy.

AT SELECTION-SCREEN OUTPUT.

  CREATE OBJECT grid.

  SELECT * FROM makt INTO CORRESPONDING FIELDS OF TABLE table UP TO 27 ROWS.

  grid->set_table_for_first_display( EXPORTING i_structure_name = 'MAKT'
                                      CHANGING it_outtab       = table ).
  grid->register_delayed_event( i_event_id = cl_gui_alv_grid=>mc_evt_delayed_change_select ).
  grid->set_delay_time( ).

~Jose.