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#!/usr/bin/gjs
const Lang = imports.lang;
const Gtk = imports.gi.Gtk;
const Application = new Lang.Class({
//A Class requires an explicit Name parameter. This is the Class Name.
Name: 'Application',
//create the application
_init: function() {
this.application = new Gtk.Application();
//connect to 'activate' and 'startup' signals to handlers.
this.application.connect('activate', Lang.bind(this, this._onActivate));
this.application.connect('startup', Lang.bind(this, this._onStartup));
},
//create the UI
_buildUI: function() {
this._window = new Gtk.ApplicationWindow({ application: this.application,
title: "Hello World!" });
this._window.set_default_size(200, 200);
this.label = new Gtk.Label({ label: "Hello World" });
this._window.add(this.label);
},
//handler for 'activate' signal
_onActivate: function() {
//show the window and all child widgets
this._window.show_all();
},
//handler for 'startup' signal
_onStartup: function() {
this._buildUI();
}
});
//run the application
let app = new Application();
app.application.run(ARGV);
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