| 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 org.gvsig.editing;

import java.util.List;

import javax.swing.JOptionPane;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.plugins.Extension;

import org.gvsig.app.ApplicationLocator;

import org.gvsig.app.project.documents.view.gui.DefaultViewPanel;

import org.gvsig.editing.gui.cad.tools.ExploitCADTool;

import org.gvsig.editing.layers.VectorialLayerEdited;

import org.gvsig.fmap.dal.DALLocator;

import org.gvsig.fmap.dal.DataManager;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.feature.FeatureSelection;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.fmap.dal.feature.FeatureStoreProviderFactory;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.type.GeometryType;

import org.gvsig.fmap.mapcontrol.MapControl;

import org.gvsig.tools.dispose.DisposableIterator;

/**

 * Extensi?n que gestiona la simplificaci?n de una geometr?a compuesta en otras m?s sencillas.

 *

 * @author Vicente Caballero Navarro

 */

public class ExploitExtension extends Extension {

    private static Logger logger = LoggerFactory.getLogger(ExploitExtension.class);

        private DefaultViewPanel view;

        private MapControl mapControl;

        private ExploitCADTool exploit;

        /**

         * @see org.gvsig.andami.plugins.IExtension#initialize()

         */

        public void initialize() {

                exploit=new ExploitCADTool();

                CADExtension.addCADTool("_exploit",exploit);

                registerIcons();

        }

        private void registerIcons(){

                PluginServices.getIconTheme().registerDefault(

                                "edition-geometry-exploit",

                                this.getClass().getClassLoader().getResource("images/Exploit.png")

                        );

        }

        /**

         * @see org.gvsig.andami.plugins.IExtension#execute(java.lang.String)

         */

        public void execute(String s) {

                CADExtension.initFocus();

                if (s.equals("_exploit")) {

                CADExtension.setCADTool(s,true);

        }

                CADExtension.getEditionManager().setMapControl(mapControl);

                CADExtension.getCADToolAdapter().configureMenu();

        }

        /**

         * @see org.gvsig.andami.plugins.IExtension#isEnabled()

         */

        public boolean isEnabled() {

                DisposableIterator iterator = null;

                try {

                        if (EditionUtilities.getEditionStatus() ==

                            EditionUtilities.EDITION_STATUS_ONE_VECTORIAL_LAYER_ACTIVE_AND_EDITABLE) {

                                view = (DefaultViewPanel) PluginServices.getMDIManager().getActiveWindow();

                                mapControl = view.getMapControl();

                                EditionManager em=CADExtension.getEditionManager();

                                if (em.getActiveLayerEdited()==null) {

                                        return false;

                                }

                                VectorialLayerEdited vle=(VectorialLayerEdited)em.getActiveLayerEdited();

//                                FLyrVect lv=(FLyrVect)vle.getLayer();

                                if (((FeatureSelection)vle.getFeatureStore().getSelection()).getSize()<1) {

                                        return false;

                                }

                                FeatureStore store = vle.getFeatureStore();

                                return canExploit(store);

                                /*

                                if (!canExploit(store)) {

                                    return false;

                                }

                                */

                                /*

                                 * We cannot iterate through selection to get enabled or disbled

                                 * 

                                iterator = ((FeatureSelection) vle.getFeatureStore()

                                                .getSelection()).fastIterator();

                                if (iterator.hasNext()){

                                        Feature feature = (Feature) iterator.next();

                                        if (feature.getDefaultGeometry()!=null &&

                                            exploit.isApplicable((feature.getDefaultGeometry()).getType())){

                                                return true;

                                        }

                                }

                                */

                        }

                } catch (Throwable e) {

                    logger.info("IsEnabled error. ", e);

                    ApplicationLocator.getManager().message("_Unable_to_update_tool_status",

                        JOptionPane.ERROR_MESSAGE);

                        // NotificationManager.addError(e.getMessage(),e);

                } finally {

                        if (iterator != null) {

                                iterator.dispose();

                        }

                }

                return false;

        }

        private boolean canExploit(FeatureStore store) {

        DataManager dalmanager = DALLocator.getDataManager();

        FeatureStoreProviderFactory factory =

            (FeatureStoreProviderFactory) dalmanager.getStoreProviderFactory(store.getProviderName());

        GeometryType geotype = null;

        try {

            geotype = store.getDefaultFeatureType().getDefaultGeometryAttribute().getGeomType();

        } catch (DataException e) {

            logger.info("Cant get geom type.", e);

            return false;

        }

        if (geotype.getType() == Geometry.TYPES.CURVE

            || geotype.getType() == Geometry.TYPES.MULTICURVE) {

            // exploting a curve gives curves, so ok

            return true;

        }

        if (geotype.getType() == Geometry.TYPES.SURFACE

            || geotype.getType() == Geometry.TYPES.MULTISURFACE) {

            // exploting a surface can give curves:

            return allowsCurvesOfSubtype(factory, geotype.getSubType());

                // (factory.allowMultipleGeometryTypes()

                // == FeatureStoreProviderFactory.YES); 

        }

        if (geotype.isTypeOf(Geometry.TYPES.GEOMETRY)) {

            // if everything is allowed, ok

            return true;

        }

        // otherwise: (multi)points, etc, not allowed

        return false;

        }

        /**

     * @param factory

     * @param subType

     * @return whether given factory supports

     * curves of given subtype

     */

    private boolean allowsCurvesOfSubtype(

        FeatureStoreProviderFactory fact,

        int subt) {

        List arr2_list = fact.getSupportedGeometryTypesSubtypes();

        int[] item = null;

        int sz = arr2_list.size();

        for (int i=0; i<sz; i++) {

            item = (int[]) arr2_list.get(i);

            if (item != null && item.length == 2

                && item[0] == Geometry.TYPES.CURVE

                && item[1] == subt) {

                // found curves of same subtype (dimensions)

                return true;

            }

        }

        return false;

    }

    /**

         * @see org.gvsig.andami.plugins.IExtension#isVisible()

         */

        public boolean isVisible() {

                if (EditionUtilities.getEditionStatus() == EditionUtilities.EDITION_STATUS_ONE_VECTORIAL_LAYER_ACTIVE_AND_EDITABLE) {

                        return true;

                }

                return false;

        }

}