Application: gvSIG desktop » gvSIG tools: Vector editing

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2014 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.vectorediting.lib.prov.remove;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

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

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

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

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

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.primitive.Point;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.exception.BaseException;

import org.gvsig.tools.service.spi.ProviderServices;

import org.gvsig.tools.visitor.VisitCanceledException;

import org.gvsig.tools.visitor.Visitor;

import org.gvsig.vectorediting.lib.api.DrawingStatus;

import org.gvsig.vectorediting.lib.api.EditingServiceParameter;

import org.gvsig.vectorediting.lib.api.EditingServiceParameter.TYPE;

import org.gvsig.vectorediting.lib.api.exceptions.DrawServiceException;

import org.gvsig.vectorediting.lib.api.exceptions.FinishServiceException;

import org.gvsig.vectorediting.lib.api.exceptions.InvalidEntryException;

import org.gvsig.vectorediting.lib.api.exceptions.StartServiceException;

import org.gvsig.vectorediting.lib.api.exceptions.StopServiceException;

import org.gvsig.vectorediting.lib.spi.AbstractEditingProvider;

import org.gvsig.vectorediting.lib.spi.DefaultEditingServiceParameter;

import org.gvsig.vectorediting.lib.spi.EditingProvider;

import org.gvsig.vectorediting.lib.spi.EditingProviderFactory;

import org.gvsig.vectorediting.lib.spi.EditingProviderServices;

/**

 * @author fdiaz

 *

 */

public class RemoveEditingProvider extends AbstractEditingProvider implements

    EditingProvider {

    private EditingServiceParameter selection;

    private FeatureStore featureStore;

    private Map<EditingServiceParameter, Object> values;

    /**

     * Default constructor.

     *

     * @param providerServices

     *            available services for this provider

     * @param parameters

     *            of this provider

     */

    public RemoveEditingProvider(ProviderServices providerServices,

        DynObject parameters) {

        super(providerServices);

        this.featureStore =

            (FeatureStore) parameters

                .getDynValue(EditingProviderFactory.FEATURE_STORE_FIELD);

        this.selection =

            new DefaultEditingServiceParameter("selection", "selection",

                TYPE.SELECTION);

    }

    public EditingServiceParameter next() {

        if (values.get(selection) == null) {

            return selection;

        }

        return null;

    }

    public DrawingStatus getDrawingStatus(Point mousePosition)

        throws DrawServiceException {

        return null;

    }

    public void stop() throws StopServiceException {

        if (values != null) {

            values.clear();

        }

    }

    public List<EditingServiceParameter> getParameters() {

        List<EditingServiceParameter> parameters =

            new ArrayList<EditingServiceParameter>();

        parameters.add(selection);

        return parameters;

    }

    public void setValue(Object value) throws InvalidEntryException {

        EditingServiceParameter parameter = next();

        validateAndInsertValue(parameter, value);

    }

    private void validateAndInsertValue(EditingServiceParameter parameter,

        Object value) {

        if (parameter == selection) {

            if (value instanceof FeatureSelection) {

                if (((FeatureSelection) value).getSelectedCount() > 0) {

                    values.put(selection, value);

                }

            }

        }

    }

    public Geometry finish() throws FinishServiceException {

        return null;

    }

    public void finishAndStore() throws FinishServiceException {

        if (values != null) {

            FeatureSelection featureSelection =

                (FeatureSelection) values.get(selection);

            try {

                featureSelection.accept(new Visitor() {

                    public void visit(Object obj)

                        throws VisitCanceledException, BaseException {

                        Feature feature = (Feature) obj;

                        ((EditingProviderServices) getProviderServices())

                            .deleteFeatureFromFeatureStore(feature,

                                featureStore);

                    }

                });

                featureStore.getFeatureSelection().deselectAll();

            } catch (BaseException e) {

                throw new FinishServiceException(e);

            }

        }

    }

    public void start() throws StartServiceException, InvalidEntryException {

        values = new HashMap<EditingServiceParameter, Object>();

        FeatureSelection selected = null;

        if (featureStore != null) {

            try {

                selected = featureStore.getFeatureSelection();

            } catch (DataException e) {

                throw new StartServiceException(e);

            }

            try {

                setValue(selected);

            } catch (InvalidEntryException e) {

                throw new InvalidEntryException(e);

            }

        }

    }

    public String getName() {

        return RemoveEditingProviderFactory.PROVIDER_NAME;

    }

}