}
TreeNode tn = (TreeNode) (st.getSelectionPath().getLastPathComponent());
((DefaultTreeModel) (st.getModel())).nodeChanged(tn);
}
});
st.addTreeSelectionListener(new TreeSelectionListener() {
public void valueChanged(TreeSelectionEvent e) {
Object o = st.getSelectedSourceOrCollection();
if ((o instanceof DataSource) && e.isAddedPath()) {
VariableConflict vc = (VariableConflict) list.getSelectedValue();
vc.ds = (DataSource) o;