Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.mapcontext.layers;

import java.util.ArrayList;

/**

 * @author fjp

 *

 * Class to iterate for all layers in FLayers, but assuring not FLayers is returned.

 * The layer you receive in next method is a "leaf" layer, not grouped. 

 */

public class SingleLayerIterator {

        ArrayList singleLayers  =new ArrayList();

        int i = 0;

        int subIndex = 0;        

        public SingleLayerIterator(FLayers layers)

        {

                addSubLayer(layers);

        }

        public boolean hasNext() {

                return (i < singleLayers.size());

        }

        public FLayer next() {

                FLayer aux = (FLayer) singleLayers.get(i); 

                i++;

                return aux;

        }

        private void addSubLayer(FLayer lyr) {

                FLayers layers;

                if (lyr instanceof FLayers)

                {

                        layers = (FLayers)lyr;

                        for (int i=0; i < layers.getLayersCount(); i++)

                        {

                                addSubLayer(layers.getLayer(i));

                        }                        

                }

                else

                {

                        singleLayers.add(lyr);

                }                

        }

        public void rewind()

        {

                i=0;

        }

}