<?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="label.js" lang="gl">
  <info>
  <title type="text">Label (JavaScript)</title>
    <link type="guide" xref="beginner.js#display-widgets"/>
    <revision version="0.1" date="2012-05-24" status="draft"/>

    <credit type="author copyright">
      <name>Taryn Fox</name>
      <email its:translate="no">jewelfox@fursona.net</email>
      <years>2012</years>
    </credit>

    <desc>A label which can contain text</desc>
  <credit type="translator copyright"><name>Fran Dieguez</name><email>frandieguez@gnome.org</email><years>2012-2013.</years></credit></info>

  <title>Etiqueta</title>
  <media type="image" mime="image/png" src="media/label.png"/>
  <p>A label displaying a friendly message.</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 LabelExample {

    /* Create the application itself
       This boilerplate code is needed to build any GTK+ application. */
    constructor() {
        this.application = new Gtk.Application ({
            application_id: 'org.example.jslabel',
            flags: Gio.ApplicationFlags.FLAGS_NONE
        });

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

    // Callback function for 'activate' signal presents windows when active
    _onActivate() {
        this._window.present();
    }

    // Callback function for 'startup' signal initializes menus and builds the UI
    _onStartup() {
        this._buildUI();
    }

    // Build the application's UI
    _buildUI() {

        // Create the application window
        this._window = new Gtk.ApplicationWindow({
            application: this.application,
            window_position: Gtk.WindowPosition.CENTER,
            title: "Welcome to GNOME",
            default_height: 100,
            default_width: 200
        });

        // Create the label
        this.label = new Gtk.Label({ label: "Hello GNOME!" });
        this._window.add(this.label);

        // Show the window and all child widgets
        this._window.show_all();
    }


};

// Run the application
let app = new LabelExample ();
app.application.run (ARGV);
</code>
<p>Neste exemplo empregaremos o seguinte:</p>
<list>
  <item><p><link href="http://www.roojs.com/seed/gir-1.2-gtk-3.0/gjs/Gtk.Application.html">Gtk.Application</link></p></item>
  <item><p><link href="http://developer.gnome.org/gtk3/stable/GtkApplicationWindow.html">Gtk.ApplicationWindow</link></p></item>
  <item><p><link href="http://www.roojs.com/seed/gir-1.2-gtk-3.0/gjs/Gtk.Label.html">Gtk.Label</link></p></item>
</list>
</page>
