001 package sale.events; 002 003 import java.util.EventListener; 004 005 /** 006 * Listener listening for {@link sale.events.FormSheetEvent FormSheetEvents} from a 007 * {@link sale.Display}. 008 * 009 * @author Steffen Zschaler 010 * @version 2.0 27/05/1999 011 * @since v2.0 012 */ 013 public interface FormSheetListener extends EventListener { 014 015 /** 016 * Event triggered whenever a new FormSheet was set on the Display. 017 * 018 * @param e the event object. 019 * 020 * @override Always 021 */ 022 public void formSheetSet(FormSheetEvent e); 023 024 /** 025 * Event triggered whenever a FormSheet was removed from the Display. 026 * 027 * @param e the event object. 028 * 029 * @override Always 030 */ 031 public void formSheetRemoved(FormSheetEvent e); 032 033 }