<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" xmlns:its="http://www.w3.org/2005/11/its" xmlns:xi="http://www.w3.org/2001/XInclude" type="guide" style="task" id="gmenu.js" xml:lang="gl">
  <info>
  <title type="text">GMenu (JavaScript)</title>
    <link type="guide" xref="beginner.js#menu-combo-toolbar"/>
    <revision version="0.1" date="2012-04-07" status="draft"/>

    <credit type="author copyright">
      <name>Tiffany Antopolski</name>
      <email its:translate="no">tiffany.antopolski@gmail.com</email>
      <years>2012</years>
    </credit>

    <desc>A simple implementation of GMenuModel</desc>
  
    <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
      <mal:name>Fran Dieguez</mal:name>
      <mal:email>frandieguez@gnome.org</mal:email>
      <mal:years>2012-2013.</mal:years>
    </mal:credit>
  </info>

  <title>GMenu</title>
  <media type="image" mime="image/png" src="media/gmenu.js.png"/>
  <p>A GtkApplication with a simple GMenu and SimpleActions</p>

      <code mime="application/javascript" style="numbered">#!/usr/bin/gjs

imports.gi.versions.Gtk = '3.0';

const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Gtk = imports.gi.Gtk;

class Application {

    //create the application
    constructor() {
        this.application = new Gtk.Application ({
            application_id: 'org.example.myapp',
            flags: Gio.ApplicationFlags.FLAGS_NONE
        });

       //connect to 'activate' and 'startup' signals to the callback functions
       this.application.connect('activate', this._onActivate.bind(this));
       this.application.connect('startup', this._onStartup.bind(this));
    }

    //create the UI (in this case it's just the ApplicationWindow
    _buildUI() {
        this._window = new Gtk.ApplicationWindow  ({ application: this.application,
                                                   window_position: Gtk.WindowPosition.CENTER,
                                                   title: "Welcome to GNOME" });

        //uncommenting the line below will change the window size
        //this._window.set_default_size(600, 400);

        //show the window and all child widgets (none in this case)
        this._window.show_all();
    }

    _showNew() {
        print("This doesn't do anything. It is only a demonstration.");
    }

    _showAbout() {
        print("No AboutDialog here.  This is only a demonstration.");
    }

    //create the menu items and connect the signals to the callback functions.
    _initMenus() {
        let menu = new Gio.Menu();
        menu.append("New",'app.new');
        menu.append("About", 'app.about');
        menu.append("Quit",'app.quit');
        this.application.set_app_menu(menu);

        let newAction = new Gio.SimpleAction ({ name: 'new' });
        newAction.connect('activate', () =&gt; { this._showNew(); });
        this.application.add_action(newAction);

        let aboutAction = new Gio.SimpleAction ({ name: 'about' });
        aboutAction.connect('activate', () =&gt; { this._showAbout(); });
        this.application.add_action(aboutAction);

        let quitAction = new Gio.SimpleAction ({ name: 'quit' });
        quitAction.connect('activate', () =&gt; { this._window.destroy(); });
         this.application.add_action(quitAction);
    }

    //callback function for 'activate' signal
    _onActivate() {
        this._window.present();
    }

    //callback function for 'startup' signal
    _onStartup() {
        //You must call _initMenus() before calling _buildUI().
        this._initMenus();
        this._buildUI();
    }
};

//run the application
let app = new Application ();
app.application.run (ARGV);
</code>
<p>Neste exemplo empregaremos o seguinte:</p>
<list>
  <item><p><link href="http://developer.gnome.org/gio/unstable/GMenu.html">GMenu</link></p></item>
  <item><p><link href="http://developer.gnome.org/gio/stable/GSimpleAction.html">GSimpleAction</link></p></item>
</list>
</page>
