| 58 | }; |
| 59 | |
| 60 | InterProcessCommunicator::InterProcessCommunicator() |
| 61 | : _private(new InterProcessCommunicatorPrivate(this)) |
| 62 | { |
| 63 | Q_D(InterProcessCommunicator); |
| 64 | |
| 65 | d->serviceRegistered = QDBusConnection::sessionBus().registerService(QStringLiteral(TW_SERVICE_NAME)); |
| 66 | if (d->serviceRegistered) { |
| 67 | _isFirstInstance = true; |
| 68 | } |
| 69 | else { |
| 70 | d->interface = new QDBusInterface(QString::fromLatin1(TW_SERVICE_NAME), QString::fromLatin1(TW_APP_PATH), QString::fromLatin1(TW_INTERFACE_NAME)); |
| 71 | if (d->interface->isValid()) |
| 72 | _isFirstInstance = false; |
| 73 | else { |
| 74 | // We could not register the service, but couldn't connect to an |
| 75 | // already registered one, either. This can mean that something is |
| 76 | // seriously wrong, we've met some race condition, or the dbus |
| 77 | // service is not running. Let's assume the best (dbus not running) |
| 78 | // and continue as a multiple-instance app instead |
| 79 | _isFirstInstance = true; |
| 80 | return; |
| 81 | } |
| 82 | } |
| 83 | if (_isFirstInstance) { |
| 84 | d->objectRegistered = QDBusConnection::sessionBus().registerObject(QStringLiteral(TW_APP_PATH), this); |
| 85 | |
| 86 | // failed to register the application object, so unregister our service |
| 87 | // and continue as a multiple-instance app instead |
| 88 | if (!d->objectRegistered) { |
| 89 | QDBusConnection::sessionBus().unregisterService(QStringLiteral(TW_SERVICE_NAME)); |
| 90 | d->serviceRegistered = false; |
| 91 | _isFirstInstance = false; |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | InterProcessCommunicator::~InterProcessCommunicator() |
| 97 | { |