Application: gvSIG desktop

/* 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 com.iver.cit.gvsig.project.documents.view.toolListeners;

import java.awt.Component;

import java.awt.Cursor;

import java.awt.Image;

import java.awt.Point;

import java.awt.Toolkit;

import java.awt.geom.Point2D;

import java.util.BitSet;

import javax.swing.ImageIcon;

import javax.swing.JOptionPane;

import org.apache.log4j.Logger;

import com.hardcode.gdbms.engine.data.DataSource;

import com.iver.andami.PluginServices;

import com.iver.andami.messages.NotificationManager;

import com.iver.cit.gvsig.fmap.DriverException;

import com.iver.cit.gvsig.fmap.MapControl;

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

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

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

import com.iver.cit.gvsig.fmap.layers.layerOperations.AlphanumericData;

import com.iver.cit.gvsig.fmap.tools.BehaviorException;

import com.iver.cit.gvsig.fmap.tools.Events.PointEvent;

import com.iver.cit.gvsig.fmap.tools.Listeners.PointListener;

import com.iver.cit.gvsig.gui.panels.LinkPanel;

import com.iver.cit.gvsig.project.documents.view.IProjectView;

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

/**

 * <p>Listener that gets, if exists, the associated link at the feature that's at the position selection of an active, selected

 *  and vector layer of the associated <code>MapControl</code>; and displays

 *  that linked data (image, text, ...) on a dialog.</p>

 *

 * <p>Listens a single click of any mouse's button.</p>

 *

 * @author Vicente Caballero Navarro

 */

public class LinkListener implements PointListener {

        /**

         * Object used to log messages for this listener.

         */

        private static Logger logger = Logger.getLogger(InfoListener.class.getName());

        /**

         * The image to display when the cursor is active.

         */

        private final Image img = new ImageIcon(MapControl.class.getResource(

                                "images/LinkCursor.gif")).getImage();

        /**

         * The cursor used to work with this tool listener.

         * 

         * @see #getCursor()

         */

        private Cursor cur = Toolkit.getDefaultToolkit().createCustomCursor(img,

                        new Point(16, 16), "");

        /**

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

         */

        private MapControl mapCtrl;

        /**

         * Auxiliary parameter used to retrieve links associated to the features of the vector, active

         *  and selected layers.

         */

        private BitSet[] bitset;

        /**

         * Active and selected layers in the associated <code>MapControl</code>.

         */

        private FLayer[] layers;

        /**

         * A selected field in the model of the <code>MapControl</code>.

         */

        private String field;

        /**

         * Type of extension of the link.

         */

        private String ext="";

        /**

         * Type of link.

         */

        private int type;

        /**

         * <p>Creates a new <code>LinkListener</code> object.</p>

         * 

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

         */

        public LinkListener(MapControl mc) {

                this.mapCtrl = mc;

        }

        /*

         * (non-Javadoc)

         * @see com.iver.cit.gvsig.fmap.tools.Listeners.PointListener#point(com.iver.cit.gvsig.fmap.tools.Events.PointEvent)

         */

        public void point(PointEvent event) throws BehaviorException {

                Point2D pReal = mapCtrl.getMapContext().getViewPort().toMapPoint(event.getPoint());

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

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

                bitset = new BitSet[sel.length];

                layers = new FLayer[sel.length];

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

                        FLayer laCapa = (FLayer) sel[i];

            if (laCapa instanceof FLyrVect)

            {

                    // Tolerancia de 3 pixels

                FLyrVect lyrVect = (FLyrVect) laCapa;

                double tol = mapCtrl.getViewPort().toMapDistance(3);

                FBitSet newBitSet;

                try {

                    newBitSet = lyrVect.queryByPoint(pReal, tol);

                    bitset[i] = newBitSet;

                    layers[i] = laCapa;

                } catch (DriverException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                    throw new BehaviorException("Fallo al consultar " + lyrVect.getName());

                }

            }

                        /* if ((laCapa instanceof VectorialData) &&

                                        (laCapa instanceof AlphanumericData)) {

                                QueryByPointVisitor visitor = new QueryByPointVisitor();

                                visitor.setLayer(laCapa);

                                visitor.setQueriedPoint(pReal);

                                visitor.setTolerance(mapCtrl.getMapContext().getViewPort()

                                                                                        .toMapDistance(3));

                                try {

                                        ((VectorialData) laCapa).process(visitor);

                                } catch (DriverException e) {

                                        throw new BehaviorException("No se pudo procesar la capa",e);

                                } catch (VisitException e) {

                                        throw new RuntimeException(e);

                                }

                                bitset[i] = visitor.getBitSet();

                                layers[i] = laCapa;

                        } */

                }

                if (bitset != null) {

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

                                try {

                                        IProjectView model=view.getModel();

                                        type=model.getTypeLink();

                                        field=model.getSelectedField();

                                        //field = "NOM_PROVIN";

                                        //ext=".png";

                                        ext=model.getExtLink();

                                        if (layers[i] instanceof AlphanumericData) {

                                                DataSource ds = ((AlphanumericData) layers[i]).getRecordset();

                                                ds.start();

                                                //boolean exist=false;

                                                int idField;

                                                idField = ds.getFieldIndexByName(field);

                                                if (idField != -1)

                                                {

                                                        for (int j = bitset[i].nextSetBit(0); j >= 0;

                                                                        j = bitset[i].nextSetBit(j + 1))

                                                        {

                                                                LinkPanel linkpanel = new LinkPanel(field,

                                                                                ds.getFieldValue(j, idField).toString(),ext,type);

                                                                PluginServices.getMDIManager().addWindow(linkpanel);

                                                        }

                                                }

                                                logger.debug("ds.stop()");

                                                ds.stop();

                                        }else {

                                                JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(),"la_capa_no_tiene_hiperenlace");

                                        }

                                } catch (com.hardcode.gdbms.engine.data.driver.DriverException e) {

                                        NotificationManager.addError("Error formateando los resultados", e);

                                } catch (DriverException e) {

                                        NotificationManager.addError("Error formateando los resultados", e);

                                }

                        }

                }

        }

        /*

         * (non-Javadoc)

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

         */

        public Cursor getCursor() {

                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.PointListener#pointDoubleClick(com.iver.cit.gvsig.fmap.tools.Events.PointEvent)

         */

        public void pointDoubleClick(PointEvent event) throws BehaviorException {

                // TODO Auto-generated method stub

        }

}