Checking if user has selected or deselected a tree node

Hello,
In the event handler of the On Action event of a tree node, I need to decide whether the user has selected the element or deselected it.
I thought to use the following:
data: lo_node type ref to if_wd_context_node,
         lo_element type ref to if_wd_context_element,
         l_element_selected type abap_bool.
first I tried
* need to find out if this element was selected or deselected!
l_element_selected = context_element->is_selected( ).
but it didn't work - so I tried
lo_node = context_element->get_node( ).
lo_element = lo_node->get_lead_selection( ).
if lo_element = context_element.
    l_element_selected = abap_true.
else.
    l_element_selected = abap_false.
endif.
This did work.
I'm slightly confused as to why the two did not give the same result?
I can see in the implementation why - gotta love being able to see how the engine works - but why is the node selection table not set? For future reference, is there some flow that has to happen before the selection gets set but after the lead selection is made? Or is this just an error in the handling of the tree node element?
Cheers,
Chris

One would wonder why there is no is_Lead_Selected method. Having just the is _ Multi_ Selected method is quite confusing. Especially when the method description is "True, if element is selected in the node". One would assume that this would include lead selection.
Then again - when you consider the mismatch between methods that return values and methods that export values, this lack of a is_Lead_Selected method would be low down on my list of things to fix to make WDA more consistent.
Having Get_Static_Attributes return the data rather than export it would be much higher on my list - ( get_static_attributes_ref does actually return the reference to the data - talk about inconsistent! )

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Checking if user has selected or deselected a tree node

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