001/*
002 * Copyright (c) 2005 Einar Pehrson <einar@pehrson.nu>.
003 *
004 * This file is part of
005 * CleanSheets - a spreadsheet application for the Java platform.
006 *
007 * CleanSheets is free software; you can redistribute it and/or modify
008 * it under the terms of the GNU General Public License as published by
009 * the Free Software Foundation; either version 2 of the License, or
010 * (at your option) any later version.
011 *
012 * CleanSheets is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015 * GNU General Public License for more details.
016 *
017 * You should have received a copy of the GNU General Public License
018 * along with CleanSheets; if not, write to the Free Software
019 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
020 */
021package csheets.core;
022
023import java.util.EventListener;
024
025/**
026 * A listener interface for receiving notification on events occurring in a
027 * cell.
028 * @author Einar Pehrson
029 */
030public interface CellListener extends EventListener {
031
032        /**
033         * Invoked when the value of a cell has changed, either by a change in
034         * its content, or by a change of value in one of its precedents.
035         * @param cell the cell that was modified
036         */
037        public void valueChanged(Cell cell);
038
039        /**
040         * Invoked when the content of a cell has been changed.
041         * As a consequence, the cell's formula and its precedents may have changed.
042         * @param cell the cell that was modified
043         */
044        public void contentChanged(Cell cell);
045
046        /**
047         * Invoked when a new dependent has been registered on a cell,
048         * or when an old one has been removed.
049         * @param cell the cell that was modified
050         */
051        public void dependentsChanged(Cell cell);
052
053        /**
054         * Invoked when a cell has been cleared.
055         * @param cell the cell that was modified
056         */
057        public void cellCleared(Cell cell);
058
059        /**
060         * Invoked when a cell has been copied.
061         * @param cell the cell that was modified
062         * @param source the cell from which data was copied
063         */
064        public void cellCopied(Cell cell, Cell source);
065}