| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.fmap.mapcontext.rendering.legend;

import java.util.ArrayList;

import org.gvsig.fmap.mapcontext.rendering.legend.events.LegendContentsChangedListener;

/**

 * Abstract class that implements the interface for legends.It is

 * considered as the father of all XXXLegends and will implement all the methods that

 * these classes had not developed.

 * 

 * @author jaume dominguez faus - jaume.dominguez@iver.es

 * @author pepe vidal salvador - jose.vidal.salvador@iver.ses

 */

public abstract class AbstractLegend implements ILegend{

        /**

         * ArrayList of LegendListeners

         */

        private ArrayList<LegendContentsChangedListener> listeners = new ArrayList<LegendContentsChangedListener>();

        public void addLegendListener(LegendContentsChangedListener listener) {

                if (listener!=null && !listeners.contains(listener))

                        listeners.add(listener);

        }

        public void removeLegendListener(LegendContentsChangedListener listener) {

                listeners.remove(listener);

        }

        public void fireDefaultSymbolChangedEvent(SymbolLegendEvent event) {

                for (int i = 0; i < listeners.size(); i++) {

                        listeners.get(i).symbolChanged(event);

                }

        }

        public LegendContentsChangedListener[] getListeners() {

                return listeners.toArray(new LegendContentsChangedListener[listeners.size()]);

        }

}