My code to "select" an element in the Tree UI element is not consistently working

Question

Hi,
I created a Web Dynpro component that does many things.  One feature is do display information in a Tree UI element.  I use the TreeNodeType and recursive context node to build a nice tree representing what the customer wants.  Since this tree could get very large, I implemented a search feature to help users locate items in the tree.  When found, I expand the tree, and call call set_lead_selection passing in the element where found.  This seems to generally work fine (and highlights the highlights the desired TreeNodeType), but only when going farther down in the tree. If I change the search so that it should find something "higher up" in the tree, the search still works, and it finds the data, but calling the set_lead_selection does not seem to unhighlight a previously located TreeNodeType.  I have added code to loop through all elements in the tree and call set_selected( ABAP_FALSE).  This didn't seem to help.  If I use the mouse and manually click on the root of the tree, it seems deselect previously highlight TreeNodeTypes, and the highlighting works again (but still just going forward).
I implemented a Find Next feature that starts where the last search left off, and looks farther down the tree.  This works more consistent, but still occassionaly seems to "forget" to unhighlight a previously located TreeNodeType/element.
What am I doing wrong?
I am attaching a screen shot.

Answer 1

Hi Perry,
Before setting the lead selection of found result, try to clear all the selected elements from context node.
Sample:
               data lo_node type ref to if_wd_context_node.
               lo_node = wd_context->get_child_node ( name = 'MY_NODE' ).
               "Clear the current selection
               lo_node->clear_selection( ).
               " now, set the lead selection
                lo_node->set_lead_selection( .... )
Hope this helps you.
Regards,
Rama