Application: gvSIG desktop

/*

 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.

 * 

 * Copyright (C) 2004-5. 

 *

 * 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:

 * 

 * cresques@gmail.com

 */

package org.cresques.px;

import java.util.Iterator;

public class PxLayerList extends PxObjList {

        PxLayer        current = null;

        public PxLayerList() {

                super();

        }

        public void add(PxLayer layer) {

                extent.add(layer.extent);

                super.add(layer);

                current = layer;

        }

        public PxLayer getByName(String lName) {

                Iterator iter = iterator();

                PxLayer layer;

                while (iter.hasNext()) {

                        layer = (PxLayer) iter.next();

                        if (layer.getName().compareTo(lName) == 0)

                                return layer;

                }

                return null;

        }

        public boolean isCurrent(PxLayer layer) {

                return current.getId() == layer.getId();

        }

        public PxLayer getCurrent() {

                return current;

        }

        public void setCurrent(PxLayer layer) {

                current = layer;

                if (!current.isVisible()) current.setVisible(true);

        }

        public Extent getExtent() {

                Extent ext = new Extent();

                PxLayer layer;

                Iterator iter = iterator();

                while (iter.hasNext()) {

                        layer = (PxLayer) iter.next();

                        if (layer.isVisible()) ext.add(layer.extent);

                }

                return ext;

        }

}