#!/usr/bin/env gjs

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

const Gtk = imports.gi.Gtk;

const Mainloop = imports.mainloop;

function nextTitle() {

    let length = Math.random() * 20;

    let str = '';

    for (let i = 0; i < length; i++) {

        // 97 == 'a'

        str += String.fromCharCode(97 + Math.random() * 26);

    }

    return str;

}

function main() {

    Gtk.init(null);

    let win = new Gtk.Window({ title: nextTitle() });

    win.connect('destroy', () => {

        Gtk.main_quit();

    });

    win.present();

    Mainloop.timeout_add(5000, function() {

        win.title = nextTitle();

        return true;

    });

    Gtk.main();

}

main();