Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2008 Software Colaborativo S.L.

 *

 * 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:

 *

 * www.scolab.es

 */

package com.iver.cit.gvsig;

import java.awt.Component;

import java.io.File;

import java.io.IOException;

import java.io.RandomAccessFile;

import javax.swing.JFileChooser;

import javax.swing.JOptionPane;

import javax.swing.filechooser.FileFilter;

import com.iver.andami.PluginServices;

import com.iver.andami.plugins.Extension;

import com.iver.andami.preferences.IPreference;

import com.iver.andami.preferences.IPreferenceExtension;

import com.iver.cit.gvsig.About;

import com.iver.cit.gvsig.fmap.drivers.dbf.DbfEncodings;

import com.iver.cit.gvsig.gui.preferencespage.DbfDefaultEncodingPage;

import com.iver.cit.gvsig.gui.preferencespage.ViewPage;

import com.iver.utiles.extensionPoints.ExtensionPoints;

import com.iver.utiles.extensionPoints.ExtensionPointsSingleton;

/**

 * @author Francisco Jos? Pe?arrubia

 *

 *  Set encoding to dbf files.

 *  To install it, you need to copy (overwrite) dbf.jar, fmap.jar, iver-utiles.jar and of course,

 *  install this plugin to gvSIG/extensiones.

 *

 */

public class ShalomExtension extends Extension implements IPreferenceExtension {

        static File lastDir = null;

        private static  DbfDefaultEncodingPage dbfDefaultEncodingPage = new DbfDefaultEncodingPage();

        private DbfEncodings dbfEncodings = DbfEncodings.getInstance();

        private class MyOption extends Object {

                public int dbfLanguageId;

                public String charSetName;

                public MyOption(int aux) {

                        dbfLanguageId = aux;

                        charSetName = dbfEncodings.getCharsetForDbfId(aux);

                }

                @Override

                public String toString() {

                        return charSetName;

                }

        }

        /**

         * @see com.iver.andami.plugins.Extension#inicializar()

         */

        public void initialize() {

        About classAbout = (About) PluginServices.getExtension(com.iver.cit.gvsig.About.class);

        java.net.URL aboutURL2 = ShalomExtension.class.getResource(

        "/about.htm");

        classAbout.getAboutPanel().addAboutUrl("Shalom", aboutURL2);

        // TODO: To use in future releases.

//        ExtensionPoints extensionPoints = ExtensionPointsSingleton.getInstance();

//

//        extensionPoints.add("AplicationPreferences","EncodingsPage", new DbfDefaultEncodingPage());

        }

        /**

         * @see com.iver.andami.plugins.Extension#execute(java.lang.String)

         */

        public void execute(String actionCommand) {

                JFileChooser fc = new JFileChooser();

                fc.setFileFilter(new FileFilter() {

                        @Override

                        public boolean accept(File f) {

                                if (f.isDirectory())

                                        return true;

                                if (f.canWrite())

                                        if (f.getName().toLowerCase().endsWith(".dbf"))

                                                return true;

                                return false;

                        }

                        @Override

                        public String getDescription() {

                                return "Dbf files (*.dbf)";

                        }

                });

                if (lastDir != null)

                        fc.setCurrentDirectory(lastDir);

                fc.setMultiSelectionEnabled(true);

                int res = fc.showOpenDialog((Component)PluginServices.getMainFrame());

                if (res == JFileChooser.APPROVE_OPTION)

                {

                        lastDir = fc.getCurrentDirectory();

                        int dbfEncoding = getSelectedDbfEncoding();

                        if (dbfEncoding == -1)

                                return;

                        File[] files = fc.getSelectedFiles();

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

                                try {

                                        setSelectedDbfEncoding(files[i], dbfEncoding);

                                } catch (IOException e) {

                                        // TODO Auto-generated catch block

                                        e.printStackTrace();

                                }

                        }

                }

        }

        private int getSelectedDbfEncoding() {

                MyOption[] myOptions = new MyOption[dbfEncodings.getSupportedDbfLanguageIDs().length];

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

                {

                        int aux = dbfEncodings.getSupportedDbfLanguageIDs()[i];

                        myOptions[i] = new MyOption(aux);

                }

                MyOption selectedOption = (MyOption) JOptionPane.showInputDialog((Component) PluginServices.getMainFrame(),

                                PluginServices.getText(this, "select_encoding"),

                                PluginServices.getText(this, "select_encoding"),

                                JOptionPane.OK_CANCEL_OPTION,

                                null,

                                myOptions, 2);

                if (selectedOption == null)

                        return -1;

                return selectedOption.dbfLanguageId;

        }

        private void setSelectedDbfEncoding(File file, int dbfEncoding) throws IOException {

                RandomAccessFile fo = new RandomAccessFile(file, "rw");

                fo.seek(29);

                fo.writeByte(dbfEncoding);

                fo.close();

        }

        /**

         * @see com.iver.andami.plugins.Extension#isEnabled()

         */

        public boolean isEnabled() {

                return true;

        }

        /**

         * @see com.iver.andami.plugins.Extension#isVisible()

         */

        public boolean isVisible() {

                return true;

        }

        public IPreference[] getPreferencesPages() {

                IPreference[] preferences=new IPreference[1];

                preferences[0] = dbfDefaultEncodingPage;

                return preferences;

        }

}