public void selectionChanged(TreeSelectionChangeEvent selectionChangeEvent) {
    // considering only single selection
    List<Object> selection = new ArrayList<Object> (selectionChangeEvent.getNewSelection());
    Object currentSelectionKey = selection.get(0);
    UITree tree = (UITree)selectionChangeEvent.getSource();
    Object storedKey = tree.getRowKey();
    tree.setRowKey(currentSelectionKey);
    setCurrentSelection((Member)tree.getRowData());
    tree.setRowKey(storedKey);
}