Tree node collapse is not working

[Former Member]

Hi

I created tree node, i am able to display data in that node, But collapse is not working.

i kept this part of code in collapse event, event is triggering, but it is not collapsing.

DATA: lr_node TYPE REF TO if_bsp_wd_tree_node,

lv_size TYPE sytabix,

lv_index TYPE sytabix VALUE 1.

DATA: lv_event_thtmlb TYPE REF TO cl_thtmlb_tree.

TRY.

lv_event_thtmlb ?= htmlb_event_ex.

typed_context->querynetrs->collapse_node( lv_event_thtmlb->row_key ).

CATCH cx_root.

ENDTRY.

( or below part)

DESCRIBE TABLE me->typed_context->querynetrs->node_tab LINES lv_size.

WHILE lv_index <= lv_size.

lr_node = me->typed_context->querynetrs->get_node_by_index( lv_index ).

IF lr_node IS NOT INITIAL.

lr_node->collaps_node( ).

ENDIF.

lv_index = lv_index + 1.

ENDWHILE.

please let me know why collapse is not working.

thanks

ram.

ram

[Former Member]

HI Ram,

did you try to do a reread afterwards?

If you look at the component IBHIER view TreeEnhanced it uses a global variable node_modified that is set after the collapse.

Then afterwards in the DO_PREPARE_OUTPUT this variable is checked and used to reread the entity.

IF me->node_modified = abap_true AND me->entity IS BOUND.

me->entity->reread( ).

ENDIF.

Maybe also add this part of coding in your method and in the DO_PREPARE_OUTPUT.

KR,

Micha