| 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.app.project.documents.view.toolListeners;

import java.awt.Image;

import java.awt.Point;

import java.util.HashMap;

import java.util.Map;

import javax.swing.JDialog;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.messages.NotificationManager;

import org.gvsig.app.project.documents.view.info.gui.FInfoDialog;

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

import org.gvsig.fmap.mapcontext.layers.operations.InfoByPoint;

import org.gvsig.fmap.mapcontrol.MapControl;

import org.gvsig.fmap.mapcontrol.MapControlLocator;

import org.gvsig.fmap.mapcontrol.swing.dynobject.LayersDynObjectSetComponent;

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

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

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

import org.gvsig.tools.dynobject.DynObjectSet;

/**

 * Listener that looks for information at the point selected by one

 * click of any mouse's button, in the active layers of the associated

 * <code>MapControl</code>, and displays that data on a {@link FInfoDialog

 * FInfoDialog} dialog.

 * 

 * @author -2009 Vicente Caballero Navarro

 * @author 2009- gvSIG Team

 */

public class InfoListener implements PointListener {

    /**

     * Object used to log messages for this listener.

     */

//    private static final Logger logger = LoggerFactory.getLogger(InfoListener.class);

    /**

     * The image to display when the cursor is active.

     */

    private final Image img = PluginServices.getIconTheme()

        .get("cursor-query-information").getImage();

    /**

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

     */

    private MapControl mapCtrl;

    /**

     * Radius as tolerance around the selected point, the area will be used to

     * look for information.

     */

    private static int TOL = 7;

    /**

     * <p>

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

     * </p>

     * 

     * @param mc

     *            the <code>MapControl</code> where will be applied the changes

     */

    public InfoListener(MapControl mc) {

        this.mapCtrl = mc;

    }

    public void point(PointEvent event) throws BehaviorException {

        try {

            Point imagePoint =

                new Point((int) event.getPoint().getX(), (int) event.getPoint()

                    .getY());

            int numLayersInfoable = 0;

            double tol = mapCtrl.getViewPort().toMapDistance(TOL);

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

            Map<String, DynObjectSet> layer2info =

                new HashMap<String, DynObjectSet>(sel.length);

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

                FLayer laCapa = sel[i];

                if (laCapa instanceof InfoByPoint) {

                    InfoByPoint layer = (InfoByPoint) laCapa;

                    DynObjectSet info =

                        layer.getInfo(imagePoint, tol, null, false);

                    layer2info.put(laCapa.getName(), info);

                    numLayersInfoable++;

                }

            }

            // TODO: set the writable parameter to true to activate

            // edition of the info by point information.

            LayersDynObjectSetComponent infoComponent =

                MapControlLocator.getMapControlManager()

                    .createLayersDynObjectSetComponent(layer2info, false);

            FInfoDialog dlgInfo = new FInfoDialog(infoComponent);

            if (numLayersInfoable > 0) {

                if (PluginServices.getMainFrame() == null) {

                    JDialog dialog = new JDialog();

                    dlgInfo.setPreferredSize(dlgInfo.getSize());

                    dialog.getContentPane().add(dlgInfo);

                    dialog.setModal(false);

                    dialog.pack();

                    dialog.setVisible(true);

                } else {

                    dlgInfo =

                        (FInfoDialog) PluginServices.getMDIManager().addWindow(

                            dlgInfo);

                }

            }

        } catch (Exception e) {

            NotificationManager.addError("Info by Point", e);

            e.printStackTrace();

        }

    }

    public Image getImageCursor() {

        return img;

    }

    public boolean cancelDrawing() {

        return false;

    }

    public void pointDoubleClick(PointEvent event) throws BehaviorException {

        // Nothing to do

    }

}