On click event on alv web dynpro.

Question

I've inserted this code in the WDDOINIT method:
DATA: l_ref_INTERFACECONTROLLER TYPE REF TO  IWCI_SALV_WD_TABLE .
l_ref_INTERFACECONTROLLER =   wd_This->wd_CpIfc_Alv( ).
DATA:
    l_VALUE type ref to Cl_Salv_Wd_Config_Table.
    l_VALUE = l_ref_INTERFACECONTROLLER->Get_Model( ).
Display button in column subty
  lr_column = l_value->if_salv_wd_column_settings~get_column( 'SUBTY' ).
  CREATE OBJECT lr_button.
  lr_button->set_text_fieldname( 'SUBTY' ).
  lr_column->set_cell_editor( lr_button ).
Display link in column connid
  lr_column = l_value->if_salv_wd_column_settings~get_column( 'SUBTY' ).
  CREATE OBJECT lr_link.
  lr_link->set_text_fieldname( 'SUBTY' ).
  lr_column->set_cell_editor( lr_link ).
When I test the WD the dump occurs in this method:
method ensure_active_component.
  if if_wd_component_usage~has_active_component( ) = abap_false.
  Active component must exist when ...
>>>>>>>>>>>>>    raise exception type cx_wdr_rt_exception
            exporting
              textid = cx_wdr_rt_exception=>no_active_component_found
              msgv1  = me->name.
  endif.
endmethod.
Why?

Answer 1

Hello,
I am not too sure for your requirement, but what I could understood is "You have created an ALV table of buttons and have assigned with same onaction method, once cliked on any of the button, you want to figure out which button has been clicked?" If this is the casse then there is a very easy way to find out where the click has taken place, use the code below in the on action method of the button in  the alv table.
data: lo_context_element type ref to IF_WD_CONTEXT_ELEMENT,
          lv_clicked_row       type int4.
check wdevent is bound.
lo_context_element =  wdevent->get_context_element( 'CONTEXT_ELEMENT' ).
check lo_context_element is bound.
lv_clicked_row = lo_context_element->get_index( ).
Once this is executed, lv_clicked_row would contain the index of the table row where the user have clicked, this value can be further used for business logic derivation purpose.
Please let me know if this does not help!
Thanks & Regards
Abir Chakraborty