Application: gvSIG desktop » gvSIG 3D

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2015 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 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., 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.view3d.swing.impl.data;

import java.io.IOException;

import org.gvsig.fmap.mapcontext.MapContext;

import org.gvsig.fmap.mapcontext.layers.FLayer;

import gov.nasa.worldwind.avlist.AVKey;

import gov.nasa.worldwind.avlist.AVList;

import gov.nasa.worldwind.avlist.AVListImpl;

import gov.nasa.worldwind.data.AbstractDataRasterReader;

import gov.nasa.worldwind.data.DataRaster;

import gov.nasa.worldwind.geom.Sector;

/**

 * @author <a href="mailto:lmarques@disid.com">Lluis Marques</a>

 *

 */

public class DefaultDataRasterReader extends AbstractDataRasterReader {

    /**

     * @param description

     */

    protected DefaultDataRasterReader(String description) {

        super(description);

    }

    @Override

    public boolean canRead(Object source, AVList params) {

        if (source == null) {

            throw new IllegalArgumentException();

        }

        return this.doCanRead(source, params);

    }

    @Override

    protected boolean doCanRead(Object source, AVList params) {

        if (params == null) {

            return false;

        }

        Sector sector = (Sector) params.getValue(AVKey.SECTOR);

        if (sector == null) {

            return false;

        }

        if (source instanceof FLayer) {

            boolean canRead = false;

            GvSIGLayerDataRaster dataRaster = null;

            try {

                FLayer layer = (FLayer) source;

                MapContext mapContext =

                    (MapContext) params.getValue("GVSIG_MAPCONTEXT");

                dataRaster =

                    new GvSIGLayerDataRaster(mapContext, layer, params);

                canRead = true;

            } catch (Throwable e) {

                canRead = false;

            } finally {

                if (dataRaster != null) {

                    dataRaster.dispose();

                }

            }

            return canRead;

        }

        return false;

    }

    @Override

    protected DataRaster[] doRead(Object source, AVList params)

        throws IOException {

        if (source == null) {

            throw new IllegalArgumentException();

        }

        if (source instanceof FLayer) {

            FLayer layer = (FLayer) source;

            MapContext mapContext =

                (MapContext) params.getValue("GVSIG_MAPCONTEXT");

            GvSIGLayerDataRaster dataRaster =

                new GvSIGLayerDataRaster(mapContext, layer, params);

            return new DataRaster[] { dataRaster };

        }

        return null;

    }

    @Override

    protected void doReadMetadata(Object source, AVList params)

        throws IOException {

        //TODO: fill weigth height and sector

    }

    @Override

    public AVList readMetadata(Object source, AVList params) throws java.io.IOException

    {

        if (!this.canRead(source, params))

        {

            throw new IllegalArgumentException();

        }

        if (params == null)

            params = new AVListImpl();

        this.doReadMetadata(source, params);

        String message = this.validateMetadata(source, params);

        if (message != null)

            throw new java.io.IOException(message);

        return params;

    }

}