| 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 com.iver.cit.gvsig.graph;

import java.awt.BasicStroke;

import java.awt.Color;

import java.util.Collection;

import java.util.Iterator;

import javax.swing.JComponent;

import javax.swing.JOptionPane;

import com.iver.andami.PluginServices;

import com.iver.andami.plugins.Extension;

import com.iver.andami.ui.mdiManager.IWindow;

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

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

import com.iver.cit.gvsig.fmap.core.IFeature;

import com.iver.cit.gvsig.fmap.core.IGeometry;

import com.iver.cit.gvsig.fmap.core.v02.FArrowSymbol;

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

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

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

import com.iver.cit.gvsig.fmap.rendering.FGraphic;

import com.iver.cit.gvsig.graph.core.GvFlag;

import com.iver.cit.gvsig.graph.core.Network;

import com.iver.cit.gvsig.graph.gui.RouteReportPanel;

import com.iver.cit.gvsig.graph.solvers.Route;

import com.iver.cit.gvsig.graph.solvers.ShortestPathSolverAStar;

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

import com.iver.cit.gvsig.util.GvSession;

public class ShortestPathExtension extends Extension {

        public static ShortestPathSolverAStar solver = new ShortestPathSolverAStar();

        private int idSymbolLine = -1;

        public void initialize() {

        }

        public void execute(String actionCommand) {

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

                MapControl mapCtrl = v.getMapControl();

                MapContext map = mapCtrl.getMapContext();

                SingleLayerIterator it = new SingleLayerIterator(map.getLayers());

                while (it.hasNext())

                {

                        FLayer aux = it.next();

                        if (!aux.isActive())

                                continue;

                        Network net = (Network) aux.getProperty("network");

                        if ( net != null)

                        {

                                Route route;

                                try {

                                        solver.setNetwork(net);

//                                        solver.setFielStreetName("STREET_NAM");

                                        route = solver.calculateRoute();

                                        if (route.getFeatureList().size() == 0)

                                        {

                                                JOptionPane.showMessageDialog((JComponent) PluginServices.getMDIManager().getActiveWindow(),

                                                                PluginServices.getText(this, "shortest_path_not_found"));

                                                return;

                                        }

                                        GvSession.getInstance().put(mapCtrl, "Route", route);

                                        createGraphicsFrom(route.getFeatureList(), v.getMapControl());

                                        RouteReportPanel routeReport = new RouteReportPanel(route, v.getMapControl());

                                        PluginServices.getMDIManager().addWindow(routeReport);

                                } catch (GraphException e) {

                                        // TODO Auto-generated catch block

                                        e.printStackTrace();

                                }

                        }

                }

        }

        private void createGraphicsFrom(Collection featureList, MapControl mapControl) {

                Iterator it = featureList.iterator();

                GraphicLayer graphicLayer = mapControl.getMapContext().getGraphicsLayer();

//                if (idSymbolLine == -1)

                {

                        FArrowSymbol arrowSymbol = new FArrowSymbol(Color.RED);

                        // FSymbol arrowSymbol = new FSymbol(FConstant.SYMBOL_TYPE_LINE);

                        arrowSymbol.setStroke(new BasicStroke(3.0f));

                        idSymbolLine = graphicLayer.addSymbol(arrowSymbol);

                }

                while (it.hasNext()) {

                        IFeature feat = (IFeature) it.next();

                        IGeometry gAux = feat.getGeometry();

                        FGraphic graphic = new FGraphic(gAux, idSymbolLine);

                        graphic.setTag("ROUTE");

                        // Lo insertamos al principio de la lista para que los

                        // pushpins se dibujen despu?s.

//                        graphicLayer.addGraphic(graphic);

                        graphicLayer.insertGraphic(0, graphic);

                }

                mapControl.drawGraphics();

        }

        public boolean isEnabled() {

                com.iver.andami.ui.mdiManager.IWindow f = PluginServices.getMDIManager()

                 .getActiveWindow();

                if (f == null) {

                    return false;

                }

                if (f instanceof View) {

                    View v = (View) f;

                        MapContext map = v.getMapControl().getMapContext();

                        SingleLayerIterator it = new SingleLayerIterator(map.getLayers());

                        while (it.hasNext())

                        {

                                FLayer aux = it.next();

                                if (!aux.isActive())

                                        continue;

                                Network net = (Network) aux.getProperty("network");

                                if ( net != null)

                                {

                                        int count = 0;

                                        for (int i=0; i < net.getOriginaFlags().size(); i++)

                                        {

                                                GvFlag flag = (GvFlag) net.getOriginaFlags().get(i);

                                                if (flag.isEnabled()) count++;

                                        }

                                        if (count > 1) return true;

                                }

                        }

                        return false;

                }

                return false;

        }

        public boolean isVisible() {

                IWindow f = PluginServices.getMDIManager()

                 .getActiveWindow();

                if (f == null) {

                    return false;

                }

                if (f instanceof View) {

                        return true;

                }

                return false;

        }

}