private void initEvents() {
//Workspace Listener
ProjectController pc = Lookup.getDefault().lookup(ProjectController.class);
final GraphController gc = Lookup.getDefault().lookup(GraphController.class);
pc.addWorkspaceListener(new WorkspaceListener() {
public void initialize(Workspace workspace) {
//Prepare DataTablesEvent listener
Lookup.getDefault().lookup(DataTablesController.class).setDataTablesEventListener(DataTableTopComponent.this);
}