GtkApplication *application;
BoilerplateWindow *window;
GtkWidget *shortcuts_window;

application = GTK_APPLICATION (user_data);
window = BOILERPLATE_WINDOW (gtk_application_get_active_window (application));

if (shortcuts_window == NULL)
{
    GtkBuilder *builder;

    builder = gtk_builder_new_from_resource ("/io/github/julianrichen/boilerplate/ui/shortcuts.ui");
    shortcuts_window = GTK_WIDGET (gtk_builder_get_object (builder, "shortcuts"));

    g_signal_connect (shortcuts_window,
                      "destroy",
                      G_CALLBACK (gtk_widget_destroyed),
                      &shortcuts_window);

    g_object_unref (builder);
}

if (GTK_WINDOW (window) != gtk_window_get_transient_for (GTK_WINDOW (shortcuts_window)))
{
    gtk_window_set_transient_for (GTK_WINDOW (shortcuts_window), GTK_WINDOW (window));
}

gtk_widget_show_all (shortcuts_window);
gtk_window_present (GTK_WINDOW (shortcuts_window));