| gvSIG desktop 1

package org.gvsig.selectiontools.app.extension.tools;

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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.

 * 

 */

import java.awt.Cursor;

import java.awt.Image;

import java.awt.Point;

import java.awt.Toolkit;

import javax.swing.ImageIcon;

import org.gvsig.andami.IconThemeHelper;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

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

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

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.Geometry.SUBTYPES;

import org.gvsig.fmap.geom.Geometry.TYPES;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.fmap.geom.exception.CreateGeometryException;

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

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

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

import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect;

import org.gvsig.fmap.mapcontrol.MapControl;

import org.gvsig.fmap.mapcontrol.tools.BehaviorException;

import org.gvsig.fmap.mapcontrol.tools.Events.MeasureEvent;

import org.gvsig.fmap.mapcontrol.tools.Listeners.PolylineListener;

/**

 * <p>

 * Listener that selects all features of the active and vector layers which

 * intersect with the defined polyline in the associated {@link MapControl

 * MapControl} object.

 * </p>

 * 

 * <p>

 * The selection will be produced after user finishes the creation of the

 * polyline.

 * </p>

 * 

 * @author Pablo Piqueras Bartolom? (pablo.piqueras@iver.es)

 */

public class PolyLineSelectionListener implements PolylineListener {

    /**

     * The image to display when the cursor is active.

     */

//    private final Image img = PluginServices.getIconTheme().get("cursor-select-by-polygon").getImage();

    /**

     * The cursor used to work with this tool listener.

     * 

     * @see #getCursor()

     */

    private Cursor cur = null;

    /**

     * Reference to the <code>MapControl</code> object that uses.

     */

    private MapControl mapCtrl;

    /**

     * <p>

     * Creates a new <code>PolygonSelectionListener</code> object.

     * </p>

     * 

     * @param mc

     *            the <code>MapControl</code> where is drawn the polyline

     */

    public PolyLineSelectionListener(MapControl mc) {

        this.mapCtrl = mc;

    }

    /*

     * (non-Javadoc)

     * 

     * @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#getCursor()

     */

    public Cursor getCursor() {

            if( cur == null ) {

                    cur = Toolkit.getDefaultToolkit().createCustomCursor(this.getImageCursor(),

                            new Point(16, 16),

                            "");

            }

        return cur;

    }

    /*

     * (non-Javadoc)

     * 

     * @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#cancelDrawing()

     */

    public boolean cancelDrawing() {

        return false;

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.fmap.tools.Listeners.PolylineListener#points(com.iver

     * .cit.gvsig.fmap.tools.Events.MeasureEvent)

     */

    public void points(MeasureEvent event) throws BehaviorException {

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.fmap.tools.Listeners.PolylineListener#pointFixed(com

     * .iver.cit.gvsig.fmap.tools.Events.MeasureEvent)

     */

    public void pointFixed(MeasureEvent event) throws BehaviorException {

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * com.iver.cit.gvsig.fmap.tools.Listeners.PolylineListener#polylineFinished

     * (com.iver.cit.gvsig.fmap.tools.Events.MeasureEvent)

     */

    public void polylineFinished(MeasureEvent event) throws BehaviorException {

        try {

            GeneralPathX gp = event.getGP();

            GeometryManager manager = GeometryLocator.getGeometryManager();

            Geometry geom = null;

            Surface surface = null;

            try {

                surface =

                    (Surface) manager.create(TYPES.SURFACE, SUBTYPES.GEOM2D);

                surface.setGeneralPath(gp);

                geom = surface;

            } catch (CreateGeometryException e1) {

                NotificationManager.showMessageError(PluginServices.getText(null,

                    "Failed_creating_geometry"),

                    e1);

            }

            if (geom == null)

                return;

            FLayer[] actives = mapCtrl.getMapContext().getLayers().getActives();

            for (int i = 0; i < actives.length; i++) {

                if (actives[i] instanceof FLyrVect) {

                    FLyrVect lyrVect = (FLyrVect) actives[i];

                    FeatureSet newSelection = null;

                    newSelection =

                        lyrVect.queryByGeometry(geom, lyrVect.getFeatureStore()

                            .getDefaultFeatureType());

                    if (event.getEvent().isControlDown()) {

                        ((FeatureSelection) lyrVect.getDataStore()

                            .getSelection()).select(newSelection);

                    } else {

                        lyrVect.getFeatureStore().setSelection(newSelection);

                    }

                }

            }

        } catch (com.vividsolutions.jts.geom.TopologyException topEx) {

            NotificationManager.showMessageError(PluginServices.getText(null,

                "Failed_selecting_geometries_by_polyline_topology_exception_explanation"),

                topEx);

        } catch (Exception ex) {

            NotificationManager.showMessageError(PluginServices.getText(null,

                "Failed_selecting_geometries"), ex);

        }

    }

    public Image getImageCursor() {

        return IconThemeHelper.getImage("cursor-select-by-polyline");

    }

}