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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 java.util.List;
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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.iver.andami.PluginServices;
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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.DriverIOExceptionType;
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import com.iver.cit.gvsig.fmap.DriverNotLoadedExceptionType;
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import com.iver.cit.gvsig.fmap.GenericDriverExceptionType;
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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.crs.CRSFactory;
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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.layers.FLayer;
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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.gui.WizardPanel;
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import com.iver.cit.gvsig.project.documents.gui.FOpenDialog;
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import com.iver.cit.gvsig.project.documents.gui.FileOpenDialog;
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import com.iver.cit.gvsig.project.documents.view.gui.BaseView;
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import com.iver.cit.gvsig.project.documents.view.gui.IView;
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/**
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 * Extensi?n que abre un di?logo para seleccionar la capa o capas que se quieren
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 * 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)
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                        throws IllegalArgumentException, SecurityException,
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                        InstantiationException, IllegalAccessException,
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                        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)
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                                .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 window = PluginServices.getMDIManager()
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                                                                                                                         .getActiveWindow();
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                if (window == null) {
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                        return false;
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                }
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                // Any view derived from BaseView should have AddLayer available
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                IView view;
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                try {
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                        view = (IView)window;
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                }
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                catch (ClassCastException e) {
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                    return false;
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                }
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                if (view == null)
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                        return false;
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                BaseView baseView = (BaseView)view;
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                return (baseView != null);
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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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                if (lyr instanceof FLyrVect) {
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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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                                // 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.YES_OPTION;
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                                if (!CRSFactory.doesRigurousTransformations()) {
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                                        option = JOptionPane.showConfirmDialog(null, PluginServices
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                                                .getText(this, "reproyectar_aviso"), PluginServices
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                                                .getText(this, "reproyectar_pregunta"),
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                                                JOptionPane.YES_NO_OPTION);
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                                }
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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 = " + 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)
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                // PluginServices.getExtension(ProjectExtension.class)).getProject();
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                BaseView theView = (BaseView) PluginServices.getMDIManager().getActiveWindow();
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                MapControl mapControl=theView.getMapControl();
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                this.addLayers(mapControl);
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                mapControl.getMapContext().callLegendChanged();
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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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         * Creates FOpenDialog, and adds file tab, and additional registered tabs
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         *
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         * @return FOpenDialog
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         */
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        private FOpenDialog createFOpenDialog() {
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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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                // first, file wizard tab
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                fopen.addTab(PluginServices.getText(this, "Fichero"), fileDlg);
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                // after that, all registerez tabs (wizardpanels implementations)
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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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                }// for
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                return fopen;
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        }
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        /**
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         * Adds to mapcontrol all the file based layers selected by user in
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         * fileOpenDialog  instance.
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         *
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         * @param mapControl
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         *            MapControl where we want to add the selected layers
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         *
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         * @param fileDlg
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         *            FileOpenDialog where user selected file based layers
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         *
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         * @return boolean flag to report sucess of the operation
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         */
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        private boolean loadFileLayers(MapControl mapControl, FileOpenDialog fileDlg) {
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                if (fileDlg.getFiles() == null) {
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                        return false;
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                }
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                FLayer lyr = null;
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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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                //all catched errors will be saved here, to show user at the end
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                //of the method
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                ArrayList errors = new ArrayList();
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                // try to load the drivers referenced by the file dialog
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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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                                DriverNotLoadedExceptionType type = new DriverNotLoadedExceptionType();
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                                type.setDriverName(driverNames[i]);
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                                DriverException exception = new DriverException(e, type);
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                                errors.add(exception);
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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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                // Envelope de cada fichero seleccionado por el usuario
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                Rectangle2D[] rects = new Rectangle2D[files.length];
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                boolean first = false;
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                // A?adir capas al mapControl se trata como una transaccion
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                mapControl.getMapContext().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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                        try {
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// FJP: Comento esto (if (fileDlg.accept(fich))) para resolver
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// 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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                                        checkProjection(lyr, mapControl.getViewPort());
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                                        mapControl.getMapContext().getLayers().addLayer(lyr);
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        //esto ya se hace en layerfactory ?lo dejamos? (azabala)
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        /*
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        if (lyr instanceof FLyrVect) {
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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
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                                        .getDefaultLegend());
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                } else {
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                        lyrVect.setLegend(LegendFactory
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                                        .createSingleSymbolLegend(lyrVect
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                                                        .getShapeType()));
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                }
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        }// if
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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
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                                        // 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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                                }// if
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                        } catch (DriverException e) {
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                                //This exception is produced in the layer.getFullExtent() call
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                                DriverIOExceptionType type =
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                                        new DriverIOExceptionType();
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                                type.setFile(fich);
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                                DriverException newException = new DriverException(e, type);
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                                lyr.addError(newException);
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                                lyr.setAvailable(false);
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//                                NotificationManager.addError("Error al crear la capa", e);
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                                errors.add(newException);
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                        }
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        /* si no seteamos la leyenda, pq ya se hace en el factory, esto quitarlo (azabala)
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                        catch (FieldNotFoundException e) {
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                                // Esta no puede saltar
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                        }
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        */
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                        catch (Exception e) {
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//azabala: usamos el notificationManager?? a mi no me gusta demasiado
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//NotificationManager.addError("Error al crear la capa", e);
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                                //we catch any possible error
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                                GenericDriverExceptionType type = new GenericDriverExceptionType();
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                                DriverException exception = new DriverException(e, type);
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                                lyr.addError(exception);
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                                lyr.setAvailable(false);
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                                errors.add(exception);
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                        }
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                }// for
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                //now, if it is the first time, we put the extent of the mapcontrol
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                //to the global extent of all the loaded layers.
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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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                        //first is true only if the extent of the mapcontrol was null
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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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                                }//for
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                                mapControl.getMapContext().getViewPort().setExtent(rect);
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                        }// if first
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                }// if
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                mapControl.getMapContext().endAtomicEvent();
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                return true;
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        }
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        /**
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         * Adds to mapcontrol all layers selected by user in the specified WizardPanel.
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         *
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         * @param mapControl
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         *         MapControl on which we want to load user selected layers.
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         * @param wizardPanel
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         *         WizardPanel where user selected the layers to load
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         * @return
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         */
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        private boolean loadGenericWizardPanelLayers(MapControl mapControl, WizardPanel wp) {
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                FLayer lyr = null;
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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) && !(lyr.isOk())){
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                        //if the layer is not okay (it has errors) process them
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                        processErrorsOfLayer(lyr, mapControl);
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                }
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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().addLayer(lyr);
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                        mapControl.getMapContext().endAtomicEvent();
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                        return true;
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                }
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                return false;
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        }
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        /**
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         * This method process the errors found in a layer
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         * @param lyr
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         * @param mapControl
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         */
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        private void processErrorsOfLayer(FLayer lyr, MapControl mapControl){
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                List errors = lyr.getErrors();
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//                wp.callError(null);
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                mapControl.getMapContext().callNewErrorEvent(null);
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        }
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        /**
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         * Abre dialogo para a?adir capas y las a?ade 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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                // create and show the modal fopen dialog
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                fopen = createFOpenDialog();
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                PluginServices.getMDIManager().addWindow(fopen);
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                if (fopen.isAccepted()) {
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                        if (fopen.getSelectedTab() instanceof FileOpenDialog) {
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                                FileOpenDialog fileDlg = (FileOpenDialog) fopen
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                                                .getSelectedTab();
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                                return loadFileLayers(mapControl, fileDlg);
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                        } else if (fopen.getSelectedTab() instanceof WizardPanel) {
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                                WizardPanel wp = (WizardPanel) fopen.getSelectedTab();
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                                return loadGenericWizardPanelLayers(mapControl, wp);
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                        } else {
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                                JOptionPane.showMessageDialog((Component) PluginServices
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                                                .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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}