#!/usr/bin/gjs
imports.gi.versions.Gtk = '3.0';
const Gio = imports.gi.Gio;
const Gtk = imports.gi.Gtk;
class CheckButtonExample {
// Create the application itself
constructor() {
this.application = new Gtk.Application({
application_id: 'org.example.jscheckbutton',
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 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,
default_height: 100,
default_width: 300,
border_width: 10,
title: "CheckButton Example"});
// Create the check button
this._button = new Gtk.CheckButton ({label: "Show Title"});
this._window.add (this._button);
// Have the check button be checked by default
this._button.set_active (true);
// Connect the button to a function that does something when it's toggled
this._button.connect ("toggled", this._toggledCB.bind(this));
// Show the window and all child widgets
this._window.show_all();
}
_toggledCB() {
// Make the window title appear or disappear when the checkbox is toggled
if (this._button.get_active() == true)
this._window.set_title ("CheckButton Example");
else
this._window.set_title ("");
}
};
// Run the application
let app = new CheckButtonExample ();
app.application.run (ARGV);