Dépôt officiel du code source de l'ERP OpenConcerto

package org.openconcerto.modules.extensionbuilder.translation;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import java.util.Locale;

import java.util.Vector;

import javax.swing.DefaultComboBoxModel;

import javax.swing.JComboBox;

import javax.swing.JPanel;

import javax.swing.SwingUtilities;

public class LocaleSelector extends JPanel {

    private String lang, country;

    private JComboBox comboLang;

    private JComboBox comboCountry;

    private List<ActionListener> listeners = new ArrayList<ActionListener>();

    private boolean interactive = true;

    public LocaleSelector() {

        this.setLayout(new FlowLayout(FlowLayout.LEFT));

        final Vector<String> langs = new Vector<String>();

        final Locale[] l = Locale.getAvailableLocales();

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

            final String language = ((Locale) l[i]).getLanguage();

            if (!langs.contains(language)) {

                langs.add(language);

            }

        }

        Collections.sort(langs);

        comboLang = new JComboBox(langs);

        this.add(comboLang);

        comboCountry = new JComboBox();

        this.add(comboCountry);

        try {

            this.setLocale(Locale.getDefault());

        } catch (Exception e) {

            System.err.println("LocaleSelector warning: unable to set current language");

        }

        comboLang.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                if (interactive) {

                    lang = comboLang.getSelectedItem().toString();

                    updateCountryFromLang();

                    country = comboCountry.getSelectedItem().toString();

                    fireActionPerformed();

                }

            }

        });

        comboCountry.addActionListener(new ActionListener() {

            @Override

            public void actionPerformed(ActionEvent e) {

                if (interactive) {

                    country = comboCountry.getSelectedItem().toString();

                    fireActionPerformed();

                }

            }

        });

        final int minWidth = comboLang.getPreferredSize().width * 2;

        final int minHeight = comboLang.getPreferredSize().height;

        comboLang.setMinimumSize(new Dimension(minWidth, minHeight));

        comboLang.setPreferredSize(new Dimension(minWidth, minHeight));

        comboCountry.setMinimumSize(new Dimension(minWidth, minHeight));

        comboCountry.setPreferredSize(new Dimension(minWidth, minHeight));

    }

    private void updateCountryFromLang() {

        Vector<String> countries = new Vector<String>();

        Locale[] l = Locale.getAvailableLocales();

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

            Locale lo = (Locale) l[i];

            if (lo.getLanguage().equals(lang)) {

                countries.add(lo.getCountry());

            }

        }

        Collections.sort(countries);

        if (countries.isEmpty()) {

            countries.add("");

        }

        comboCountry.setModel(new DefaultComboBoxModel(countries));

    }

    public Locale getLocale() {

        Locale[] l = Locale.getAvailableLocales();

        if (country != null) {

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

                Locale lo = (Locale) l[i];

                if (lo.getLanguage().equals(lang) && lo.getCountry().equals(country)) {

                    return lo;

                }

            }

        }

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

            Locale lo = (Locale) l[i];

            if (lo.getLanguage().equals(lang)) {

                return lo;

            }

        }

        return null;

    }

    public void setLocale(Locale l) {

        if (!SwingUtilities.isEventDispatchThread()) {

            throw new IllegalStateException("Must be called in EDT");

        }

        if (l.getLanguage().equals(this.lang) && l.getCountry().equals(this.country)) {

            return;

        }

        this.interactive = false;

        this.lang = l.getLanguage();

        this.country = l.getCountry();

        System.err.println("LocaleSelector.setLocale() " + this.lang + " " + this.country);

        this.comboLang.setSelectedItem(lang);

        updateCountryFromLang();

        this.comboCountry.setSelectedItem(country);

        this.interactive = true;

    }

    public void addActionListener(ActionListener actionListener) {

        this.listeners.add(actionListener);

    }

    public void fireActionPerformed() {

        System.err.println("LocaleSelector.fireActionPerformed():" + this.lang + " " + this.country);

        System.err.println("LocaleSelector.fireActionPerformed(); locale: " + this.getLocale());

        for (ActionListener listener : this.listeners) {

            listener.actionPerformed(new ActionEvent(this, this.hashCode(), ""));

        }

    }

}