how to handle selection event in alv component

[Former Member]

Hi all,

i am new to webdynpro abap. and i want to know how to handle selection event(such as select all / unselect ) in my simple alv application.

Thanks very much

[Former Member · Accepted solution]

Hi,

By default when you use the selection mode for the ALV as Multi/Mutli No Lead then this option is enabled.

Try to implement the event ONLEADSELECT and check wether this event is triggered or not.

DATA: lo_value type ref to cl_salv_wd_config_table.
    CALL METHOD  lo_value->if_salv_wd_table_settings~set_selection_mode
      EXPORTING
        value = cl_wd_table=>e_selection_mode-multi_no_lead.

Try to implement these event for ALV and put a break-point and test which event is getting triggered.

ON_CLICK

ON_DATA_CHECK

ON_FUNCTION

ON_LEAD_SELECT

ON_STD_FUNCTION_AFTE

ON_STD_FUNCTION_BEFO

Please provide more inputs.

Regards,

Lekha.

[Former Member · Accepted solution]

then how could i know which row has been selected or unselect after such event?

[uday_gubbala2 · Accepted solution]

Hi,

Working with Selection/LeadSelection of an ALV is no different from how you work with the Selection/LeadSelection of a normal table UI element. So if you wanted to get the element at LeadSelection you do a get_lead_selection & if you want to get the multiple rows which are selected by the user then you do an get_selected_elements.

Regards,

Uday

[uday_gubbala2 · Accepted solution]

Use the below code snippets logic to select all the rows of your ALV:

METHOD onactionselect_all_rows.
  DATA: wd_node TYPE REF TO if_wd_context_node,
        line_count TYPE i,
        lt_kna1_value TYPE ig_componentcontroller=>elements_node1,
        lt_kna1_element TYPE wdr_context_element_set.

  wd_node = wd_context->get_child_node( name = 'NODE1' ).


  CALL METHOD wd_node->get_element_count
    RECEIVING
      count = line_count.

  DO line_count TIMES.
    wd_node->set_selected( index = sy-index ).
  ENDDO.
ENDMETHOD.

[uday_gubbala2 · Accepted solution]

Use the below snippet to get all rows selected in a ALV & copy them to another ALV:

METHOD onactioncopy_selected_rows .
  DATA:  wd_node TYPE REF TO if_wd_context_node,
         ls_node1 TYPE ig_componentcontroller=>element_node1,
         lt_node1 TYPE ig_componentcontroller=>elements_node1,
         lt_node2 TYPE ig_componentcontroller=>elements_node2,
         wa_temp  TYPE REF TO if_wd_context_element,
         lt_temp  TYPE wdr_context_element_set.


  wd_node = wd_context->get_child_node( name = 'NODE1' ).

  CALL METHOD wd_node->get_selected_elements
    RECEIVING
      set = lt_temp.

  wd_node = wd_context->get_child_node( name = 'NODE2' ).

  LOOP AT lt_temp INTO wa_temp.
    CALL METHOD wa_temp->get_static_attributes
      IMPORTING
        static_attributes = ls_node1.
    APPEND ls_node1 TO lt_node1.
    CLEAR ls_node1.
  ENDLOOP.

  wd_node->bind_table( new_items = lt_node1 ).
ENDMETHOD.