| gvSIG desktop 1

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Gobernment (CIT)

 * 

 * 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., 51 Franklin Street, Fifth Floor, Boston, 

 * MA  02110-1301, USA.

 * 

 */

/*

 * AUTHORS (In addition to CIT):

 * 2008 {DiSiD Technologies}  {New extension for installation and update of text translations}

 */

package org.gvsig.i18n.extension.preferences;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.File;

import java.util.*;

import javax.swing.*;

import javax.swing.filechooser.FileFilter;

import javax.swing.table.TableColumn;

import org.gvsig.gui.beans.swing.JButton;

import org.gvsig.i18n.I18nManager;

import org.gvsig.i18n.Messages;

import org.gvsig.i18n.extension.preferences.table.*;

import org.gvsig.i18n.impl.I18nManagerImpl;

import com.iver.andami.preferences.AbstractPreferencePage;

import com.iver.andami.preferences.StoreException;

/**

 * Prefence page to manage gvSIG locales.

 * 

 * @author <a href="mailto:dcervera@disid.com">David Cervera</a>

 */

public class I18nPreferencePage extends AbstractPreferencePage implements

        ActionListener {

    private static final long serialVersionUID = 7164183052397200888L;

    private static final String COMMAND_UNINSTALL = "UNINSTALL";

    private static final String COMMAND_EXPORT = "EXPORT";

    private static final String COMMAND_EXPORT_NEW = "EXPORT_NEW";

    private static final String COMMAND_INSTALL = "INSTALL";

    private static final String EXPORT_JAR_FILE_EXTENSION = ".jar";

    private static final String EXPORT_ZIP_FILE_EXTENSION = ".zip";

    private ImageIcon icon;

    private I18nManager manager = I18nManagerImpl.getInstance();

    private JTable localesTable;

    private LocaleTableModel tableModel;

    private JFileChooser fileChooser;

    private boolean changed = false;

    /**

     * Creates a new I18n preferences page.

     */

    public I18nPreferencePage() {

        setParentID("com.iver.core.preferences.general.GeneralPage");

        icon = new ImageIcon(this.getClass().getClassLoader().getResource(

                "images/babel.png"));

        setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));

        // setLayout(new BorderLayout());

        // setSize(new java.awt.Dimension(386, 177));

        // add(getPN(), java.awt.BorderLayout.NORTH);

        add(getLocalesPanel());

        add(Box.createRigidArea(new Dimension(0, 5)));

        add(getActiveLocaleLabel());

        add(Box.createRigidArea(new Dimension(0, 5)));

        add(getButtonsPanel());

        // add(getInfoLabel());

        // add(getLocalesPanel(), BorderLayout.NORTH);

        // add(getButtonsPanel(), BorderLayout.CENTER);

        // add(getInfoLabel(), BorderLayout.SOUTH);

    }

    public String getID() {

        return getClass().getName();

    }

    public String getTitle() {

        return Messages.getText("idioma");

    }

    public ImageIcon getIcon() {

        return icon;

    }

    public JPanel getPanel() {

        return this;

    }

    public void setChangesApplied() {

        changed = false;

    }

    public boolean isValueChanged() {

        return changed;

    }

    public void storeValues() throws StoreException {

        tableModel.saveSelectedLocale();

    }

    public void initializeDefaults() {

        tableModel.loadDefaultSelectedLocale();

    }

    public void initializeValues() {

        tableModel.loadDefaultSelectedLocale();

    }

    public void actionPerformed(ActionEvent event) {

        if (COMMAND_INSTALL.equals(event.getActionCommand())) {

            installLocale();

        }

        else if (COMMAND_EXPORT.equals(event.getActionCommand())) {

            exportLocaleForUpdate();

        }

        else if (COMMAND_EXPORT_NEW.equals(event.getActionCommand())) {

            exportLocaleForTranslation();

        }

        else if (COMMAND_UNINSTALL.equals(event.getActionCommand())) {

            uninstallSelectedLocale();

        }

    }

    /**

     * Installs a new Locale translation or updates an already existing one.

     */

    private void installLocale() {

        JFileChooser fileChooser = getJarFileChooser();

        int returnVal = fileChooser.showOpenDialog(this);

        if (returnVal == JFileChooser.APPROVE_OPTION) {

            File importFile = fileChooser.getSelectedFile();

            Locale[] installedLocales = manager.installLocales(importFile);

            if (installedLocales == null || installedLocales.length == 0) {

                JOptionPane

                        .showMessageDialog(

                                this,

                                Messages

                                        .getText("I18nPreferencePage.idiomas_no_encontrados_para_instalar"),

                                Messages

                                        .getText("I18nPreferencePage.error_instalar_idiomas"),

                                JOptionPane.ERROR_MESSAGE);

            }

            else {

                StringBuffer msg = new StringBuffer(Messages

                        .getText("I18nPreferencePage.idiomas_instalados"));

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

                    msg.append(manager.getDisplayName(installedLocales[i]));

                    if (i < installedLocales.length - 1) {

                        msg.append(", ");

                    }

                }

                tableModel.reloadLocales();

                JOptionPane.showMessageDialog(this, msg.toString(), Messages

                        .getText("I18nPreferencePage.instalar_idiomas"),

                        JOptionPane.INFORMATION_MESSAGE);

            }

        }

    }

    /**

     * Updates the translation of a locale

     */

    private void exportLocaleForUpdate() {

        Locale locale = getSelectedLocale();

        if (locale == null) {

            JOptionPane.showMessageDialog(this, Messages

                    .getText("I18nPreferencePage.seleccione_idioma"), Messages

                    .getText("I18nPreferencePage.error_actualizar_idioma"),

                    JOptionPane.ERROR_MESSAGE);

        }

        else {

            // Select the reference language

            LocaleItem[] items = getLocaleItemsForSelection(manager

                    .getInstalledLocales(), new Locale[] { locale });

            LocaleItem selected;

            // Select by default the current locale, or the first one

            // if the current locale is the one to be updated

            if (locale.equals(manager.getCurrentLocale())) {

                selected = items[0];

            }

            else {

                selected = new LocaleItem(manager.getCurrentLocale(), manager);

            }

            selected = (LocaleItem) JOptionPane

                    .showInputDialog(

                            this,

                            Messages

                                    .getText("I18nPreferencePage.seleccione_idioma_referencia"),

                            Messages

                                    .getText("I18nPreferencePage.exportar_idioma"),

                            JOptionPane.QUESTION_MESSAGE, null, items, selected);

            if (selected == null) {

                return;

            }

            // Select the file to export to

            JFileChooser fileChooser = getJarFileChooser();

            fileChooser.setSelectedFile(new File(getLocaleJarFileName(locale)));

            if (fileChooser.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {

                File saveFile = fileChooser.getSelectedFile();

                manager.exportLocaleForUpdate(locale, selected.getLocale(),

                        saveFile);

                JOptionPane.showMessageDialog(this, Messages

                        .getText("I18nPreferencePage.exportado_textos_idioma")

                        + " "

                        + manager.getDisplayName(locale)

                        + Messages.getText("I18nPreferencePage.al_archivo")

                        + saveFile, Messages

                        .getText("I18nPreferencePage.exportar_idioma"),

                        JOptionPane.INFORMATION_MESSAGE);

            }

        }

    }

    /**

     * Prepares a locale for translation.

     */

    private void exportLocaleForTranslation() {

        // Get the selected locale as the one for reference

        Locale refLocale = getSelectedLocale();

        if (refLocale == null) {

            JOptionPane

                    .showMessageDialog(

                            this,

                            Messages

                                    .getText("I18nPreferencePage.seleccione_idioma_actualizar"),

                            Messages

                                    .getText("I18nPreferencePage.error_actualizar_idioma"),

                            JOptionPane.ERROR_MESSAGE);

        }

        else {

            // Select the locale to translate

            LocaleItem[] items = getLocaleItemsForSelection(Locale

                    .getAvailableLocales(), manager.getInstalledLocales());

            LocaleItem selected = (LocaleItem) JOptionPane

                    .showInputDialog(

                            this,

                            Messages

                                    .getText("I18nPreferencePage.seleccione_idioma_traducir"),

                            Messages

                                    .getText("I18nPreferencePage.exportar_idioma"),

                            JOptionPane.QUESTION_MESSAGE, null, items, items[0]);

            if (selected == null) {

                return;

            }

            // Select the file to export to

            JFileChooser fileChooser = getJarFileChooser();

            fileChooser.setSelectedFile(new File(getLocaleJarFileName(selected

                    .getLocale())));

            if (fileChooser.showSaveDialog(this) == JFileChooser.APPROVE_OPTION) {

                File saveFile = fileChooser.getSelectedFile();

                manager.exportLocaleForTranslation(selected.getLocale(),

                        refLocale, saveFile);

                JOptionPane

                        .showMessageDialog(

                                this,

                                Messages

                                        .getText("I18nPreferencePage.idioma_preparado_traducir")

                                        + manager.getDisplayName(selected

                                                .getLocale())

                                        + Messages

                                                .getText("I18nPreferencePage.en_archivo")

                                        + saveFile,

                                Messages

                                        .getText("I18nPreferencePage.exportar_idioma"),

                                JOptionPane.INFORMATION_MESSAGE);

            }

        }

    }

    private LocaleItem[] getLocaleItemsForSelection(Locale[] locales,

            Locale[] exceptions) {

        LocaleItem[] items = new LocaleItem[locales.length - 1];

        Set exceptionsSet = new HashSet(exceptions.length);

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

            exceptionsSet.add(exceptions[i]);

        }

        int j = 0;

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

            // Only add locales not included in the exceptions list

            if (!exceptionsSet.contains(locales[i])) {

                items[j] = new LocaleItem(locales[i], manager);

                j++;

            }

        }

        return items;

    }

    /**

     * Returns a name for the jar file to export a locale.

     */

    private String getLocaleJarFileName(Locale locale) {

        return manager.getDisplayName(locale, I18nManager.ENGLISH).replace(' ',

                '_').concat(EXPORT_ZIP_FILE_EXTENSION);

    }

    /**

     * Creates a new JFileChooser to import or export a locale jar file.

     */

    private JFileChooser getJarFileChooser() {

        if (fileChooser == null) {

            fileChooser = new JFileChooser();

            fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);

            fileChooser.setMultiSelectionEnabled(false);

            fileChooser.setFileFilter(new FileFilter() {

                public boolean accept(File file) {

                    return (file.isDirectory()

                            || file.getName().endsWith(

                                    EXPORT_JAR_FILE_EXTENSION) || file

                            .getName().endsWith(EXPORT_ZIP_FILE_EXTENSION));

                }

                public String getDescription() {

                    return Messages.getText("I18nPreferencePage.archivos_jar");

                }

            });

        }

        return fileChooser;

    }

    /**

     * Removes an installed locale from gvSIG.

     */

    private void uninstallSelectedLocale() {

        Locale locale = getSelectedLocale();

        if (locale == null) {

            JOptionPane

                    .showMessageDialog(

                            this,

                            Messages

                                    .getText("I18nPreferencePage.seleccione_idioma_desinstalar"),

                            Messages

                                    .getText("I18nPreferencePage.error_desinstalar_idioma"),

                            JOptionPane.ERROR_MESSAGE);

        }

        else if (locale.equals(manager.getCurrentLocale())) {

            JOptionPane

                    .showMessageDialog(

                            this,

                            Messages

                                    .getText("I18nPreferencePage.idioma_actual_no_puede_desinstalar"),

                            Messages

                                    .getText("I18nPreferencePage.error_desinstalar_idioma"),

                            JOptionPane.ERROR_MESSAGE);

        }

        else {

            int option = JOptionPane

                    .showConfirmDialog(

                            this,

                            Messages

                                    .getText("I18nPreferencePage.seguro_desea_desinstalar_idioma")

                                    + " "

                                    + manager.getDisplayName(locale)

                                    + "?",

                            Messages

                                    .getText("I18nPreferencePage.confirmar_desinstalar_idioma"),

                            JOptionPane.YES_NO_OPTION);

            if (option == JOptionPane.YES_OPTION) {

                tableModel.removeLocale(locale);

            }

        }

    }

    /**

     * Returns the Locale selected in the table of available locales.

     */

    private Locale getSelectedLocale() {

        int rowIndex = localesTable.getSelectedRow();

        if (rowIndex >= 0) {

            return tableModel.getLocale(rowIndex);

        }

        else {

            return null;

        }

    }

    /**

     * Creates the Panel with the table of Locales.

     */

    private Component getLocalesPanel() {

        tableModel = new LocaleTableModel(manager);

        localesTable = new JTable(tableModel);

        TableColumn activeColumn = localesTable.getColumnModel().getColumn(

                LocaleTableModel.COLUMN_ACTIVE);

        activeColumn.setCellEditor(new RadioButtonCellEditor());

        activeColumn.setCellRenderer(new RadioButtonCellRenderer());

        // Only single selection, as we will use the selected row as the source

        // for the actions of the panel buttons.

        localesTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);

        localesTable.getSelectionModel().setSelectionInterval(0, 0);

        JScrollPane scrollPane = new JScrollPane(localesTable);

        // Container panel

        JPanel localesPanel = new JPanel();

        localesPanel.setLayout(new BoxLayout(localesPanel, BoxLayout.Y_AXIS));

        localesPanel.add(scrollPane);

        localesPanel.setAlignmentX(CENTER_ALIGNMENT);

        localesPanel.setPreferredSize(new Dimension(236, 240));

        localesPanel.setMaximumSize(new Dimension(500, 240));

        return localesPanel;

    }

    /**

     * Creates the panel with the buttons to perform the related actions.

     */

    private Component getButtonsPanel() {

        JPanel buttonPanel = new JPanel(new GridBagLayout());

        GridBagConstraints constraints = new GridBagConstraints();

        constraints.fill = GridBagConstraints.NONE;

        constraints.anchor = GridBagConstraints.LINE_START;

        Insets btInsets = new Insets(2, 0, 2, 4);

        Insets lbInsets = new Insets(2, 2, 2, 0);

        /* ROW 0 */

        constraints.gridy = 0;

        constraints.gridx = 0;

        constraints.insets = btInsets;

        JButton newLocaleButton = new JButton(Messages

                .getText("I18nPreferencePage.Instalar"));

        newLocaleButton.setActionCommand(COMMAND_INSTALL);

        newLocaleButton.addActionListener(this);

        newLocaleButton.setToolTipText(Messages

                .getText("I18nPreferencePage.Instalar_idioma_tooltip"));

        buttonPanel.add(newLocaleButton, constraints);

        constraints.gridx = 1;

        constraints.insets = lbInsets;

        buttonPanel.add(new JLabel(Messages

                .getText("I18nPreferencePage.Instalar_idioma_tooltip")),

                constraints);

        /* ROW 1 */

        constraints.gridy = 1;

        constraints.gridx = 0;

        constraints.insets = btInsets;

        JButton removeLocaleButton = new JButton(Messages

                .getText("I18nPreferencePage.Desinstalar"));

        removeLocaleButton.setActionCommand(COMMAND_UNINSTALL);

        removeLocaleButton.addActionListener(this);

        removeLocaleButton.setToolTipText(Messages

                .getText("I18nPreferencePage.Desinstalar_idioma_tooltip"));

        buttonPanel.add(removeLocaleButton, constraints);

        constraints.gridx = 1;

        constraints.insets = lbInsets;

        buttonPanel.add(new JLabel(Messages

                .getText("I18nPreferencePage.Desinstalar_idioma_tooltip")),

                constraints);

        /* ROW 2 */

        constraints.gridy = 2;

        constraints.gridx = 0;

        constraints.insets = btInsets;

        JButton exportLocaleButton = new JButton(Messages

                .getText("I18nPreferencePage.exportar_actualizar"));

        exportLocaleButton.setActionCommand(COMMAND_EXPORT);

        exportLocaleButton.addActionListener(this);

        exportLocaleButton.setToolTipText(Messages

                .getText("I18nPreferencePage.exportar_actualizar_tooltip"));

        buttonPanel.add(exportLocaleButton, constraints);

        constraints.gridx = 1;

        constraints.insets = lbInsets;

        buttonPanel.add(new JLabel(Messages

                .getText("I18nPreferencePage.exportar_actualizar_tooltip")),

                constraints);

        /* ROW 3 */

        constraints.gridy = 3;

        constraints.gridx = 0;

        constraints.insets = btInsets;

        JButton exportNewLocaleButton = new JButton(Messages

                .getText("I18nPreferencePage.exportar_traducir"));

        exportNewLocaleButton.setActionCommand(COMMAND_EXPORT_NEW);

        exportNewLocaleButton.addActionListener(this);

        exportNewLocaleButton.setToolTipText(Messages

                .getText("I18nPreferencePage.exportar_traducir_tooltip"));

        buttonPanel.add(exportNewLocaleButton, constraints);

        constraints.gridx = 1;

        constraints.insets = lbInsets;

        buttonPanel.add(new JLabel(Messages

                .getText("I18nPreferencePage.exportar_traducir_tooltip")),

                constraints);

        buttonPanel.setAlignmentX(CENTER_ALIGNMENT);

        return buttonPanel;

    }

    /**

     * Creates the JLabel to show information about the preference page.

     */

    private Component getActiveLocaleLabel() {

        JLabel label = new JLabel(

                "<html><body><strong>Si cambia el idioma activo, ?ste no se visualizar? hasta que se reinicie la aplicaci?n</strong></body></html>");

        label.setAlignmentX(CENTER_ALIGNMENT);

        return label;

    }

    private class LocaleItem {

        private final Locale locale;

        private final I18nManager manager;

        public LocaleItem(Locale locale, I18nManager manager) {

            this.locale = locale;

            this.manager = manager;

        }

        public Locale getLocale() {

            return locale;

        }

        public String toString() {

            return manager.getDisplayName(locale);

        }

        public boolean equals(Object obj) {

            if (obj == null || !(obj instanceof LocaleItem)) {

                return false;

            }

            LocaleItem item = (LocaleItem) obj;

            return locale.equals(item.getLocale());

        }

    }

}