@Override public void addNotify() { super.addNotify(); if (outlineView == null) { outlineView = new OutlineView(Bundle.CTL_FoundModes()); outlineView.getOutline().setRootVisible(false); tree.add(outlineView); outlineView.setDefaultActionAllowed(false); outlineView.setVisible(false); tree.setMinimumSize(outlineView.getPreferredSize()); } }