How to expand a tree component

Hello,

I'm using a Tree component in my mainview. When clicking on a node, I get to expand the tree.

Now, I'd like to be able to search a node. For example, when I search for a node "material", a popup appears with all the nodes matching "material". After validating my selection, the popup closes itself and returns to the mainview. At this moment, the tree has to be expanded at the selected node, as if I had clicked on it...

I hope I've been clear enough. If not, feel free to ask =)

Thanks for any help you can provide.

C.