@Override
		public void actionPerformed(ActionEvent e) {
			FVEvent tailEvt;
			if (scrollLockButton.isSelected()) {
				tailEvt = new FVEvent(EventType.SCROLL_LOCK_ON, null);
			}
			else {
				tailEvt = new FVEvent(EventType.SCROLL_LOCK_OFF, null);
			}
			eventListener.send(tailEvt);
		}
Constructor.
@param eventListener the event listener that will be notified of action events
Ghidra/Framework/Project/src/main/java/ghidra/framework/main/logviewer/ui/FVToolBar.java