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.graph;

import java.awt.Component;

import java.io.File;

import java.sql.Types;

import java.util.ArrayList;

import javax.swing.JOptionPane;

import org.gvsig.exceptions.BaseException;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.iver.andami.PluginServices;

import com.iver.andami.messages.NotificationManager;

import com.iver.andami.plugins.Extension;

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

import com.iver.cit.gvsig.ProjectExtension;

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

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

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

import com.iver.cit.gvsig.fmap.drivers.FieldDescription;

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

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

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

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

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

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

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

import com.iver.cit.gvsig.graph.core.loaders.NetworkLoader;

import com.iver.cit.gvsig.graph.core.loaders.NetworkRedLoader;

import com.iver.cit.gvsig.project.documents.table.ProjectTable;

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

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

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

public class LoadNetworkExtension extends Extension {

        public void initialize() {

                PluginServices.getIconTheme().registerDefault(

                                "network",

                                this.getClass().getClassLoader().getResource("images/network.png")

                        );                

        }

        public void execute(String actionCommand) {

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

                MapControl mapControl = view.getMapControl();

                MapContext map = mapControl.getMapContext();

                SingleLayerIterator lyrIterator = new SingleLayerIterator(map

                                .getLayers());

                while (lyrIterator.hasNext()) {

                        FLayer lyr = lyrIterator.next();

                        if ((lyr.isActive()) && (lyr instanceof FLyrVect))

                        {

                                FLyrVect lyrVect = (FLyrVect) lyr;

                                int shapeType;

                                try {

                                        shapeType = lyrVect.getShapeType();

                                        if (shapeType == FShape.LINE)

                                        {

                                                if (actionCommand.equalsIgnoreCase("LOAD_RED")) {

                                                        loadNetwork(lyrVect);

                                                        return;

                                                }

                                        }

                                } catch (BaseException e) {

                                        e.printStackTrace();

                                        NotificationManager.addError(e);

                                }

                        }

                }

        }

        /**

         * Suponemos que en el proyecto hay 2 tablas, una con los nodos

         * y otro con los edges.

         * Cargamos la red a partir de esas tablas y se la

         * asociamos a la capa. A partir de ah?, nuestras

         * herramientas pueden ver si la capa activa tiene

         * asociada o no una red y ponerse visibles / invisibles

         * Otra posible soluci?n es llevar nuestra propia lista de capas

         * con red (que ser? peque?ita), y as?, en lugar de recorrer

         * el MapContext, recorremos nuestra lista para ver la

         * capa que est? activa y con red. Me empieza a preocupar

         * que todas las herramientas iteren por la colecci?n de

         * capas para habilitarse/deshabilitarse:

         * 100 herramientas * 100 capas = 10.000 comprobaciones

         * Si comprobar algo cuesta 1 mseg => 10 segundos!!!

         * @param lyrVect

         * @throws ReadDriverException 

         */

        private void loadNetworkFromTables(FLyrVect lyrVect) throws ReadDriverException {

                // Aqu? mostrar un di?lgo para seleccionar las tablas

                // de nodos y edges

                // y hacer un mapping (si es necesario) entre los

                // nombres de campos

                String tableNodes = "Nodes";

                String tableEdges = "Edges";

                ProjectExtension projectExt = (ProjectExtension) PluginServices.getExtension(ProjectExtension.class);

                ProjectTable ptNodes = projectExt.getProject().getTable(tableNodes);

                ProjectTable ptEdges = projectExt.getProject().getTable(tableEdges);

                SelectableDataSource sdsNodes = ptNodes.getModelo().getRecordset();

                SelectableDataSource sdsEdges = ptEdges.getModelo().getRecordset();

                NetworkLoader netLoader = new NetworkLoader(true);

                netLoader.setNodeReader(sdsNodes);

                netLoader.setEdgeReader(sdsEdges);

                IGraph g = netLoader.loadNetwork();

                System.out.println("Num nodos=" + g.numVertices() + " numEdges = " + g.numEdges());

                lyrVect.setProperty("network", g);

        }

        private void loadNetwork(FLyrVect lyrVect) throws BaseException {

                // Aqu? mostrar un di?lgo para seleccionar las tablas

                // de nodos y edges

                // y hacer un mapping (si es necesario) entre los

                // nombres de campos

                // TODO: MOSTRAR UN CUADRO DE DI?LOGO CON UN COMBOBOX PARA QUE ESCOJA EL CAMPO DE NOMBRE DE CALLE.

                ArrayList aux = new ArrayList();

                FieldDescription[] fields = lyrVect.getRecordset().getFieldsDescription();

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

                {

                        if (fields[i].getFieldType() == Types.VARCHAR)

                        {

                                aux.add(fields[i].getFieldName());

                        }

                }

                String fieldStreetName = (String) JOptionPane.showInputDialog((Component) PluginServices.getMainFrame(),

                                PluginServices.getText(this, "select_street_route_field_name"),

                                "gvSIG",

                                JOptionPane.QUESTION_MESSAGE, 

                                null,

                                (Object[]) aux.toArray(new String[0]), 

                                "NOMBRE");

                if (fieldStreetName == null)

                        return;

                NetworkRedLoader netLoader = new NetworkRedLoader();

                File redFile = NetworkUtils.getNetworkFile(lyrVect);

                netLoader.setNetFile(redFile);

                IGraph g = netLoader.loadNetwork();

                System.out.println("Num nodos=" + g.numVertices() + " numEdges = " + g.numEdges());

                Network net = new Network();

                // lyrVect.createSpatialIndex();

                net.setGraph(g);

                net.setLayer(lyrVect);

                ShortestPathExtension.solver.setNetwork(net);

                ShortestPathExtension.solver.setFielStreetName(fieldStreetName);

                lyrVect.setProperty("network", net);

        }

        public boolean isEnabled() {

                IWindow f = PluginServices.getMDIManager().getActiveWindow();

                if (f == null) {

                        return false;

                }

                if (f instanceof View) {

                        View vista = (View) f;

                        IProjectView model = vista.getModel();

                        MapContext mapa = model.getMapContext();

                        FLayer[] activeLayers = mapa.getLayers().getActives();

                        if (activeLayers.length > 0)

                                if (activeLayers[0] instanceof FLyrVect){

                                        FLyrVect lyrVect = (FLyrVect) activeLayers[0];

                                        File netFile = NetworkUtils.getNetworkFile(lyrVect);

                                        if (netFile.exists())

                                                return true;

                                }

                }

                return false;

        }

        public boolean isVisible() {

                IWindow f = PluginServices.getMDIManager().getActiveWindow();

                if (f == null) {

                        return false;

                }

                if (f instanceof View) {

                        View vista = (View) f;

                        IProjectView model = vista.getModel();

                        MapContext mapa = model.getMapContext();

                        FLayer[] activeLayers = mapa.getLayers().getActives();

                        if (activeLayers.length > 0)

                                if (activeLayers[0] instanceof FLyrVect){

                                        FLyrVect lyrVect = (FLyrVect) activeLayers[0];

                                        int shapeType ;

                                        try {

                                                shapeType = lyrVect.getShapeType();

                                                if (shapeType == FShape.LINE)

                                                        return true;

                                        } catch (ReadDriverException e) {

                                                // TODO Auto-generated catch block

                                                e.printStackTrace();

                                        }

                                }        

                }

                return false;

        }

}