* @return
*/
private SelectionChangedEvent updateEvent(SelectionChangedEvent event) {
ISelection selection = event.getSelection();
if (selection instanceof ITextSelection && !(selection instanceof IStructuredSelection)) {
IStructuredModel structuredModel = null;
StructuredTextEditor localEditor = getStructuredTextEditor();
if (localEditor != null) {
structuredModel = localEditor.getInternalModel();
if (structuredModel != null) {
int start = ((ITextSelection) selection).getOffset();