1<?xml version="1.0" encoding="utf-8"?>
2<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">
3  <info>
4  <title type="text">GMenu (JavaScript)</title>
5    <link type="guide" xref="beginner.js#menu-combo-toolbar"/>
6    <revision version="0.1" date="2012-04-07" status="draft"/>
7
8    <credit type="author copyright">
9      <name>Tiffany Antopolski</name>
10      <email its:translate="no">tiffany.antopolski@gmail.com</email>
11      <years>2012</years>
12    </credit>
13
14    <desc>A simple implementation of GMenuModel</desc>
15
16    <mal:credit xmlns:mal="http://projectmallard.org/1.0/" type="translator copyright">
17      <mal:name>Fran Dieguez</mal:name>
18      <mal:email>frandieguez@gnome.org</mal:email>
19      <mal:years>2012-2013.</mal:years>
20    </mal:credit>
21  </info>
22
23  <title>GMenu</title>
24  <media type="image" mime="image/png" src="media/gmenu.js.png"/>
25  <p>A GtkApplication with a simple GMenu and SimpleActions</p>
26
27      <code mime="application/javascript" style="numbered">#!/usr/bin/gjs
28
29imports.gi.versions.Gtk = '3.0';
30
31const Gio = imports.gi.Gio;
32const GLib = imports.gi.GLib;
33const Gtk = imports.gi.Gtk;
34
35class Application {
36
37    //create the application
38    constructor() {
39        this.application = new Gtk.Application ({
40            application_id: 'org.example.myapp',
41            flags: Gio.ApplicationFlags.FLAGS_NONE
42        });
43
44       //connect to 'activate' and 'startup' signals to the callback functions
45       this.application.connect('activate', this._onActivate.bind(this));
46       this.application.connect('startup', this._onStartup.bind(this));
47    }
48
49    //create the UI (in this case it's just the ApplicationWindow
50    _buildUI() {
51        this._window = new Gtk.ApplicationWindow  ({ application: this.application,
52                                                   window_position: Gtk.WindowPosition.CENTER,
53                                                   title: "Welcome to GNOME" });
54
55        //uncommenting the line below will change the window size
56        //this._window.set_default_size(600, 400);
57
58        //show the window and all child widgets (none in this case)
59        this._window.show_all();
60    }
61
62    _showNew() {
63        print("This doesn't do anything. It is only a demonstration.");
64    }
65
66    _showAbout() {
67        print("No AboutDialog here.  This is only a demonstration.");
68    }
69
70    //create the menu items and connect the signals to the callback functions.
71    _initMenus() {
72        let menu = new Gio.Menu();
73        menu.append("New",'app.new');
74        menu.append("About", 'app.about');
75        menu.append("Quit",'app.quit');
76        this.application.set_app_menu(menu);
77
78        let newAction = new Gio.SimpleAction ({ name: 'new' });
79        newAction.connect('activate', () =&gt; { this._showNew(); });
80        this.application.add_action(newAction);
81
82        let aboutAction = new Gio.SimpleAction ({ name: 'about' });
83        aboutAction.connect('activate', () =&gt; { this._showAbout(); });
84        this.application.add_action(aboutAction);
85
86        let quitAction = new Gio.SimpleAction ({ name: 'quit' });
87        quitAction.connect('activate', () =&gt; { this._window.destroy(); });
88         this.application.add_action(quitAction);
89    }
90
91    //callback function for 'activate' signal
92    _onActivate() {
93        this._window.present();
94    }
95
96    //callback function for 'startup' signal
97    _onStartup() {
98        //You must call _initMenus() before calling _buildUI().
99        this._initMenus();
100        this._buildUI();
101    }
102};
103
104//run the application
105let app = new Application ();
106app.application.run (ARGV);
107</code>
108<p>Neste exemplo empregaremos o seguinte:</p>
109<list>
110  <item><p><link href="http://developer.gnome.org/gio/unstable/GMenu.html">GMenu</link></p></item>
111  <item><p><link href="http://developer.gnome.org/gio/stable/GSimpleAction.html">GSimpleAction</link></p></item>
112</list>
113</page>
114