| 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 es.gva.cit.gvsig.catalog.loaders;

import java.lang.reflect.InvocationTargetException;

import java.util.TreeMap;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.fmap.layers.FLayer;

import com.iver.cit.gvsig.project.documents.view.gui.View;

import es.gva.cit.catalog.schemas.Resource;

/**

 * This class has to be inherited by all the classes

 * that have to load a layer in the current view

 * @author Jorge Piera Llodra (piera_jor@gva.es)

 */

public abstract class LayerLoader {

        private static TreeMap loadersPool = new TreeMap();

        static {

                LayerLoader.addLoader(Resource.WMS, WMSLayerLoader.class);

                LayerLoader.addLoader(Resource.POSTGIS, PostgisLayerLoader.class);

                LayerLoader.addLoader(Resource.WCS, WCSLayerLoader.class);

                LayerLoader.addLoader(Resource.WEBSITE, LinkLoader.class);

                LayerLoader.addLoader(Resource.DOWNLOAD, LinkLoader.class);

                LayerLoader.addLoader(Resource.WFS, WFSLayerLoader.class);

                LayerLoader.addLoader(Resource.ARCIMS_IMAGE, ARCIMSLayerLoader.class);

                LayerLoader.addLoader(Resource.ARCIMS_VECTORIAL, ARCIMSLayerLoader.class);

        }

        public static void addLoader(String key, Class loader) {

                LayerLoader.loadersPool.put(key, loader);

        }

        public static LayerLoader getLoader(Resource resource) throws IllegalArgumentException, SecurityException, InstantiationException, IllegalAccessException, InvocationTargetException, NoSuchMethodException {

                if (LayerLoader.loadersPool.containsKey(resource.getType())) {

                        Class llClass = (Class) LayerLoader.loadersPool.get(resource.getType());

                        Class [] args = {Resource.class};

                        Object [] params = {resource};

                        return (LayerLoader) llClass.getConstructor(args).newInstance(params);

                }

                return null;

        }

        private Resource resource = null;

        public LayerLoader(Resource resource){

                this.resource = resource;

        }

        abstract public void loadLayer() throws LayerLoaderException;

        /**

         * It returns the error message

         * @return

         * Error Message

         */

        abstract protected String getErrorMessage();

        /**

         * It returns the window title for an window error message

         * @return

         * Window title

         */

        abstract protected String getWindowMessage();

        /**

     * It adds a new layer to the current view

     * @param lyr

     * Layer lo load

     */

    protected void addLayerToView(FLayer lyr) {

                View theView = 

                        (View) PluginServices.getMDIManager().getActiveWindow();

                if (lyr != null) {                        

                        theView.getMapControl().getMapContext().beginAtomicEvent();

                        theView.getMapControl().getMapContext().getLayers().addLayer(lyr);

                        theView.getMapControl().getMapContext().endAtomicEvent();

                        PluginServices.getMainFrame().enableControls();

                }

        }

        public Resource getResource() {

                return resource;

        }

        public void setResource(Resource resource) {

                this.resource = resource;

        }

}