@Override
		public void actionPerformed(ActionEvent e) {
			try {
				scrollView(timerScrollAmount);
				if (timerScrollAmount > 0) {
					timerPoint.setIndex(layouts.get(layouts.size() - 1).getIndex());
				}
				else {
					timerPoint.setIndex(layouts.get(0).getIndex());
				}
				selectionHandler.updateSelectionSequence(timerPoint);
			}
			catch (Exception ex) {
				// don't care
			}
		}
Notifies all listeners that the selection changed.
Ghidra/Framework/Docking/src/main/java/docking/widgets/fieldpanel/FieldPanel.java