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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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 *
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 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2
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 * of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.
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 *
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 * For more information, contact:
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 *
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 *  Generalitat Valenciana
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 *   Conselleria d'Infraestructures i Transport
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 *   Av. Blasco Ib??ez, 50
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 *   46010 VALENCIA
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 *   SPAIN
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 *
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 *      +34 963862235
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 *   gvsig@gva.es
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 *      www.gvsig.gva.es
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 *
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 *    or
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 *
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 *   IVER T.I. S.A
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 *   Salamanca 50
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 *   46005 Valencia
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 *   Spain
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 *
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 *   +34 963163400
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 *   dac@iver.es
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 */
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package com.iver.cit.gvsig;
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import java.awt.Component;
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import java.awt.geom.Rectangle2D;
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import java.io.File;
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import java.lang.reflect.InvocationTargetException;
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import java.util.ArrayList;
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import javax.swing.JOptionPane;
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import org.cresques.cts.ICoordTrans;
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import org.cresques.cts.IProjection;
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import com.hardcode.driverManager.Driver;
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import com.hardcode.driverManager.DriverLoadException;
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import com.hardcode.gdbms.engine.instruction.FieldNotFoundException;
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import com.iver.andami.PluginServices;
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import com.iver.andami.messages.NotificationManager;
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import com.iver.andami.plugins.Extension;
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import com.iver.cit.gvsig.fmap.DriverException;
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import com.iver.cit.gvsig.fmap.MapControl;
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import com.iver.cit.gvsig.fmap.ViewPort;
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import com.iver.cit.gvsig.fmap.drivers.RasterDriver;
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import com.iver.cit.gvsig.fmap.drivers.VectorialFileDriver;
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import com.iver.cit.gvsig.fmap.drivers.WithDefaultLegend;
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import com.iver.cit.gvsig.fmap.layers.FLayer;
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import com.iver.cit.gvsig.fmap.layers.FLyrDefault;
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import com.iver.cit.gvsig.fmap.layers.FLyrVect;
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import com.iver.cit.gvsig.fmap.layers.LayerFactory;
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import com.iver.cit.gvsig.fmap.rendering.LegendFactory;
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import com.iver.cit.gvsig.fmap.rendering.VectorialLegend;
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import com.iver.cit.gvsig.gui.FOpenDialog;
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import com.iver.cit.gvsig.gui.FileOpenDialog;
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import com.iver.cit.gvsig.gui.View;
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import com.iver.cit.gvsig.gui.WizardPanel;
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/**
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 * Extensi?n que abre un di?logo para seleccionar la capa o capas que se
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 * quieren a?adir a la vista.
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 *
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 * @author Fernando Gonz?lez Cort?s
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 */
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public class AddLayer extends Extension {
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        public FOpenDialog fopen = null;
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        private static ArrayList wizardStack = null;
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        static {
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                AddLayer.wizardStack = new ArrayList();
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        }
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        public static void addWizard(Class wpClass) {
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                AddLayer.wizardStack.add(wpClass);
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        }
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        public static WizardPanel getInstance(int i) throws IllegalArgumentException, SecurityException, InstantiationException, IllegalAccessException, InvocationTargetException, NoSuchMethodException {
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                Class wpClass = (Class) AddLayer.wizardStack.get(i);
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                Class [] args = {};
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                Object [] params = {};
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                WizardPanel wp = (WizardPanel) wpClass.getConstructor(args).newInstance(params);
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                wp.initWizard();
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                return wp;
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        }
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        /**
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         * @see com.iver.mdiApp.plugins.IExtension#isVisible()
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         */
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        public boolean isVisible() {
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                com.iver.andami.ui.mdiManager.IWindow view = PluginServices.getMDIManager()
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                                                                                                                         .getActiveView();
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                if (view == null) {
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                        return false;
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                }
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                return (view instanceof View);
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        }
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        /**
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         * @see com.iver.andami.plugins.IExtension#initialize()
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         */
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        public void initialize() {
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        }
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    private void checkProjection(FLayer lyr, ViewPort viewPort)
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    {
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        if (lyr instanceof FLyrVect)
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        {
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            FLyrVect lyrVect = (FLyrVect) lyr;
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            IProjection proj = lyr.getProjection();
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            // Comprobar que la projecci?n es la misma que la vista
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            if (proj == null)
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            {
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                // SUPONEMOS que la capa est? en la proyecci?n que 
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                // estamos pidiendo (que ya es mucho suponer, ya).
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                lyrVect.setProjection(viewPort.getProjection());
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                return;
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            }
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            if (proj != viewPort.getProjection()) {
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                int option = JOptionPane.showConfirmDialog(null,
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                        PluginServices.getText(this, "reproyectar_aviso"),
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                        PluginServices.getText(this, "reproyectar_pregunta"),
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                        JOptionPane.YES_NO_OPTION);
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                if (option == JOptionPane.NO_OPTION) {
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                    return;
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                } else {
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                    ICoordTrans ct = proj.getCT(viewPort.getProjection());
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                    lyrVect.setCoordTrans(ct);
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                    System.err.println("coordTrans = " +
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                        proj.getAbrev() + " " +
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                        viewPort.getProjection().getAbrev());
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                }
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            }
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        }                    
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    }
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        /**
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         * @see com.iver.andami.plugins.IExtension#execute(java.lang.String)
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         */
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        public void execute(String actionCommand) {
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                //Project project = ((ProjectExtension) PluginServices.getExtension(ProjectExtension.class)).getProject();
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                View theView = (View) PluginServices.getMDIManager().getActiveView();
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                this.addLayers(theView.getMapControl());
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                return;
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        }
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        /**
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         * @see com.iver.andami.plugins.IExtension#isEnabled()
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         */
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        public boolean isEnabled() {
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                return true;
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        }
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        /**
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         * Abre dialogo para a?adir capas y las a?ade
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         * en mapControl
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         * 
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         * Devuelve true si se han a?adido capas.
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         */        
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        public boolean addLayers(MapControl mapControl) {                
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                fopen = new FOpenDialog();
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                FileOpenDialog fileDlg = new FileOpenDialog(new Class[] {
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                                        VectorialFileDriver.class, RasterDriver.class
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                                });
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                fopen.addTab(PluginServices.getText(this, "Fichero"), fileDlg);
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                for (int i=0; i<wizardStack.size(); i++) {
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                        WizardPanel wp;
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                        try {
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                                wp = AddLayer.getInstance(i);
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                                fopen.addWizardTab(wp.getTabName(), wp);                        
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                        } catch (IllegalArgumentException e) {
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                                e.printStackTrace();
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                        } catch (SecurityException e) {
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                                e.printStackTrace();
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                        } catch (InstantiationException e) {
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                                e.printStackTrace();
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                        } catch (IllegalAccessException e) {
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                                e.printStackTrace();
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                        } catch (InvocationTargetException e) {
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                                e.printStackTrace();
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                        } catch (NoSuchMethodException e) {
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                                e.printStackTrace();
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                        }
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                }
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                PluginServices.getMDIManager().addView(fopen);
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                if (fopen.isAccepted()) {
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                        FLayer lyr = null;
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                        if (fopen.getSelectedTab() == fileDlg) {
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                                if (fileDlg.getFiles() == null) {
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                                        return false;
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                                }
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                                IProjection proj = FOpenDialog.getLastProjection();
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                                File[] files = fileDlg.getFiles();
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                                String[] driverNames = fileDlg.getDriverNames();
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                                Driver[] drivers = new Driver[driverNames.length];
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                                for (int i = 0; i < drivers.length; i++) {
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                                        try {
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                                                drivers[i] = LayerFactory.getDM().getDriver(driverNames[i]);
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                                        } catch (DriverLoadException e) {
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                                                NotificationManager.addError("No se pudo cargar el driver", e);
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                                        }
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                                }
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                                Rectangle2D[] rects=new Rectangle2D[files.length];
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                                boolean first=false;
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                                mapControl.getMapContext()
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                                   .beginAtomicEvent();
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                                for (int iFile = 0; iFile < files.length; iFile++) {
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                                        File fich = files[iFile];
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                                        String layerName = fich.getName();
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                                        //String layerPath = fich.getAbsolutePath();
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                                        try {
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                                                // FJP: Comento esto (if (fileDlg.accept(fich))) para resolver el bug 75. ?Esto estaba antes
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                        // o lo apuesto alguien por algo en concreto?.
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                                                // if (fileDlg.accept(fich))
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                                                    if (drivers[iFile] instanceof VectorialFileDriver){
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                                                            lyr = LayerFactory.createLayer(layerName,
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                                                                            (VectorialFileDriver) drivers[iFile], fich, proj);
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                                                    }else if (drivers[iFile] instanceof RasterDriver){
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                                                            lyr = LayerFactory.createLayer(layerName,
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                                                                            (RasterDriver) drivers[iFile], fich, proj);
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                                                    }
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                                                if (lyr != null) {
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                                                        lyr.setVisible(true);
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                                                        if (mapControl.getMapContext().getViewPort().getExtent()==null){
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                                                                first=true;
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                                                        }
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                            try {
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                                // Le asignamos tambi?n una legenda por defecto acorde con
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                                // el tipo de shape que tenga. Tampoco s? si es aqu? el
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                                // sitio adecuado, pero en fin....
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                                checkProjection(lyr, mapControl.getViewPort());
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                                mapControl.getMapContext().getLayers()
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                                   .addLayer(lyr);
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                                if (lyr instanceof FLyrVect)
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                                {
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                                    FLyrVect lyrVect = (FLyrVect) lyr;
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                                    if (drivers[iFile] instanceof WithDefaultLegend) {
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                                        WithDefaultLegend aux = (WithDefaultLegend) drivers[iFile];
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                                        lyrVect.setLegend((VectorialLegend) aux.getDefaultLegend());                                        
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                                    } else {
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                                        lyrVect.setLegend(LegendFactory.createSingleSymbolLegend(
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                                                lyrVect.getShapeType()));
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                                    }
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                                }
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                            } catch (FieldNotFoundException e) {
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                                //Esta no puede saltar
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                            }                            
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                                                        rects[iFile]=lyr.getFullExtent();
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                                                        // TODO: Poner una variable y dibujar solo cuando
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                                                        // todas las capas hayan sido cargadas.
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                                                        // TODO Se deber? de redibujar mediante la captura de los eventos, por
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                                                        //eso se comenta la parte anterior
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                                                        //                                                        theView.getMapControl().drawMap();
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                                                        //                                                        theView.getTOC().refresh();
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                                                }
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                                        } catch (DriverException e) {
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                                                lyr.setAvailable(false);
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                                                NotificationManager.addError("Error al crear la capa", e);
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                                        } catch (Exception e) {
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                                                NotificationManager.addError("Error al crear la capa", e);
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                                                lyr.setAvailable(false);
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                                        }
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                                }
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                                //Esto permite que cuando se cargan varias capas de golpe y la vista est? vacia,se ponga como extent la suma de todos sus extents.
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                                if (rects.length > 1) {
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                                        Rectangle2D rect = new Rectangle2D.Double();
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                                        rect.setRect(rects[0]);
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                                        if (first) {
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                                                for (int i = 0; i < rects.length; i++) {
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                                                        if (rects[i] != null) {
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                                                                rect.add(rects[i]);
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                                                        }
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                                                }
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                                                mapControl.getMapContext().getViewPort()
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                                                           .setExtent(rect);
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                                        }
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                                }
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                                mapControl.getMapContext()
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                                   .endAtomicEvent();
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                                return true;
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                        } else if (fopen.getSelectedTab() instanceof WizardPanel) {
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                                WizardPanel wp = (WizardPanel) fopen.getSelectedTab();
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                                wp.setMapCtrl(mapControl);
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                                wp.execute();
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                                lyr = wp.getLayer();
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                                if (lyr != null) {
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                                        lyr.setVisible(true);
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                                        mapControl.getMapContext().beginAtomicEvent();
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                    checkProjection(lyr, mapControl.getViewPort());
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                                        mapControl.getMapContext().getLayers()
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                                                   .addLayer(lyr);
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                                        mapControl.getMapContext().endAtomicEvent();
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                                        return true;
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                                }
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                        } else {
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                                JOptionPane.showMessageDialog((Component)PluginServices.getMainFrame(),"Ninguna capa seleccionada");
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                        }
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                }
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                return false;
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        }
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}