import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;

/** This is a partly-internationalized version of MenuDemo.
 * To try it out, use
 *        java MenuIntl
 *        java -Duser.language=es MenuIntl
 */
public class MenuIntl extends JFrame {

    /** "main program" method - construct and show */
    public static void main(String[] av) {
        // create an MenuIntl object, tell it to show up
        new MenuIntl(  ).setVisible(true);
    }

    /** Construct the object including its GUI */
    public MenuIntl(  ) {
        super("MenuIntlTest");
        JMenuItem mi;        // used in various spots

        Container cp = getContentPane(  );
        cp.setLayout(new FlowLayout(  ));
        JLabel lab;
        cp.add(lab = new JLabel(  ));

        addWindowListener(new WindowAdapter(  ) {
            public void windowClosing(WindowEvent e) {
                setVisible(false);
                dispose(  );
                System.exit(0);
            }
        });
        JMenuBar mb = new JMenuBar(  );
        setJMenuBar(mb);

        ResourceBundle b = ResourceBundle.getBundle("Menus");

        String titlebar;
        try { titlebar = b.getString("program"+".title"); }
        catch (MissingResourceException e) { titlebar="MenuIntl Demo"; }
        setTitle(titlebar);

        String message;
        try { message = b.getString("program"+".message"); }
        catch (MissingResourceException e) { 
            message="Welcome to the world of Java";
        }
        lab.setText(message);

        JMenu fm = mkMenu(b, "file");
        fm.add(mi = mkMenuItem(b, "file", "open"));
        // In finished code there would be a call to
        // mi.addActionListener(...) after *each* of 
        // these mkMenuItem calls!
        fm.add(mi = mkMenuItem(b, "file", "new"));
        fm.add(mi = mkMenuItem(b, "file", "save"));
        fm.add(mi = mkMenuItem(b, "file", "exit"));
        mi.addActionListener(new ActionListener(  ) {
            public void actionPerformed(ActionEvent e) {
                MenuIntl.this.setVisible(false);
                MenuIntl.this.dispose(  );
                System.exit(0);
            }
        });
        mb.add(fm);

        JMenu vm = mkMenu(b,  "view");
        vm.add(mi = mkMenuItem(b, "view", "tree"));
        vm.add(mi = mkMenuItem(b, "view", "list"));
        vm.add(mi = mkMenuItem(b, "view", "longlist"));
        mb.add(vm);

        JMenu hm = mkMenu(b,  "help");
        hm.add(mi = mkMenuItem(b, "help", "about"));
        // mb.setHelpMenu(hm);    // needed for portability (Motif, etc.).

        // the main window
        JLabel jl = new JLabel("Menu Demo Window");
        jl.setSize(200, 150);
        cp.add(jl);
        pack(  );
    }

    /** Convenience routine to make a JMenu */
    public JMenu mkMenu(ResourceBundle b, String name) {
        String menuLabel;
        try { menuLabel = b.getString(name+".label"); }
        catch (MissingResourceException e) { menuLabel=name; }
        return new JMenu(menuLabel);
    }

    /** Convenience routine to make a JMenuItem */
    public JMenuItem mkMenuItem(ResourceBundle b, String menu, String name) {
        String miLabel;
        try { miLabel = b.getString(menu + "." + name + ".label"); }
        catch (MissingResourceException e) { miLabel=name; }
        String key = null;
        try { key = b.getString(menu + "." + name + ".key"); }
        catch (MissingResourceException e) { key=null; }

        if (key == null)
            return new JMenuItem(miLabel);
        else
            return new JMenuItem(miLabel, key.charAt(0));
    }
}