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<?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="pt-BR">
<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>Rafael Fontenelle</mal:name>
<mal:email>rafaelff@gnome.org</mal:email>
<mal:years>2013, 2018</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', () => { this._showNew(); });
this.application.add_action(newAction);
let aboutAction = new Gio.SimpleAction ({ name: 'about' });
aboutAction.connect('activate', () => { this._showAbout(); });
this.application.add_action(aboutAction);
let quitAction = new Gio.SimpleAction ({ name: 'quit' });
quitAction.connect('activate', () => { 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>
In this sample we used the following:
</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>
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