private void resetMarks() { interpToMark.removeAll(); shiftToMark.removeAll(); Iterator marks = mediator.getMarkerModel().getLabels().iterator(); boolean hasMark = false; while (marks.hasNext()) { String mark = (String) marks.next(); if (!ChronicleViewer.CURR_FRAME_LABEL.equals(mark)) { JMenuItem mi = new JMenuItem(mark); mi.addActionListener(itmAction); interpToMark.add(mi); mi = new JMenuItem(mark); mi.addActionListener(stmAction); shiftToMark.add(mi); hasMark = true; } } shiftToMark.setEnabled(hasMark); interpToMark.setEnabled(hasMark); }