#!/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 LinkButtonExample {

    // Create the application itself

    constructor() {

        this.application = new Gtk.Application({

            application_id: 'org.example.jslinkbutton',

            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 window 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: "GNOME LinkButton",

                                                 default_height: 50,

                                                 default_width: 250 });

        // Create the LinkButton and have it link to live.gnome.org

        this.LinkButton = new Gtk.LinkButton ({label: "Link to GNOME live!",

                               uri: "http://live.gnome.org"});

        this._window.add (this.LinkButton);

    // Show the window and all child widgets

    this._window.show_all();

    }

};

// Run the application

let app = new LinkButtonExample ();

app.application.run (ARGV);