| gvSIG desktop 1

/*

 * 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.gvsig.projection.cresques.px;

import java.util.Iterator;

import org.gvsig.projection.px.Extent;

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;

    }

}