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#!/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);
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