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lubuntu-default-settings/snap-installation-monitor/main.cpp

77 lines
3.0 KiB

// Copyright (C) 2024 Simon Quigley <tsimonq2@ubuntu.com>
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 3
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
#include <QApplication>
#include <QSystemTrayIcon>
#include <QtDBus/QtDBus>
#include <QTimer>
int main(int argc, char *argv[]) {
QApplication app(argc, argv);
// Create and set application icon
QIcon appIcon = QIcon::fromTheme("dialog-information");
QApplication::setWindowIcon(appIcon);
// DBus interface to systemd
QDBusInterface systemd("org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
QDBusConnection::systemBus());
// Retrieve current status of snapd.seeded.service, which tracks the preseed process
QDBusMessage methodCall = systemd.call("GetUnit", "snapd.seeded.service");
QDBusObjectPath unitPath = methodCall.arguments().at(0).value<QDBusObjectPath>();
QDBusInterface unit("org.freedesktop.systemd1",
unitPath.path(),
"org.freedesktop.systemd1.Unit",
QDBusConnection::systemBus());
QVariant activeState = unit.property("ActiveState");
QVariant subState = unit.property("SubState");
// System tray icon setup
QSystemTrayIcon trayIcon(appIcon);
trayIcon.setToolTip("Snap Installation Monitor");
// Initial message displayed in the system tray
auto showMessage = [&trayIcon]() {
trayIcon.showMessage("Installation Notice", "Finalizing installation of snaps, please wait...",
QSystemTrayIcon::Information, 15000);
};
// If the user clicks the system tray icon, display the notification again
QObject::connect(&trayIcon, &QSystemTrayIcon::activated, [&](QSystemTrayIcon::ActivationReason reason) {
if (reason == QSystemTrayIcon::Trigger) {
showMessage();
}
});
// Exit immediately if the service is "active (exited)", launch the GUI parts otherwise
if (activeState.toString() == "active" && subState.toString() == "exited") { return 0; }
trayIcon.show();
showMessage();
QTimer timer;
QObject::connect(&timer, &QTimer::timeout, [&unit, &trayIcon]() {
QVariant newState = unit.property("ActiveState");
QVariant newSubState = unit.property("SubState");
if (newState.toString() == "active" && newSubState.toString() == "exited") {
trayIcon.hide();
QApplication::quit();
}
});
timer.start(5000); // Check every 5 seconds
return app.exec();
}