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1+/*
2+ * Copyright (C) 2011-2014 Canonical, Ltd.
3+ *
4+ * Authors:
5+ * Ugo Riboni <ugo.riboni@canonical.com>
6+ *
7+ * This program is free software; you can redistribute it and/or modify
8+ * it under the terms of the GNU General Public License as published by
9+ * the Free Software Foundation; version 3.
10+ *
11+ * This program is distributed in the hope that it will be useful,
12+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
13+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14+ * GNU General Public License for more details.
15+ *
16+ * You should have received a copy of the GNU General Public License
17+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
18+ */
19+
20+#include "abstractdbusservicemonitor.h"
21+
22+#include <QDBusInterface>
23+#include <QDBusServiceWatcher>
24+#include <QDBusConnection>
25+#include <QDBusConnectionInterface>
26+#include <QDBusReply>
27+
28+AbstractDBusServiceMonitor::AbstractDBusServiceMonitor(const QString &service, const QString &path,
29+ const QString &interface, const Bus bus,
30+ QObject *parent)
31+ : QObject(parent)
32+ , m_service(service)
33+ , m_path(path)
34+ , m_interface(interface)
35+ , m_watcher(new QDBusServiceWatcher(service,
36+ (bus == SystemBus) ? QDBusConnection::systemBus()
37+ : QDBusConnection::sessionBus()))
38+ , m_dbusInterface(nullptr)
39+{
40+ connect(m_watcher, &QDBusServiceWatcher::serviceRegistered, this, &AbstractDBusServiceMonitor::createInterface);
41+ connect(m_watcher, &QDBusServiceWatcher::serviceUnregistered, this, &AbstractDBusServiceMonitor::destroyInterface);
42+
43+ // Connect to the service if it's up already
44+ QDBusConnectionInterface* sessionBus = QDBusConnection::sessionBus().interface();
45+ QDBusReply<bool> reply = sessionBus->isServiceRegistered(m_service);
46+ if (reply.isValid() && reply.value()) {
47+ createInterface(m_service);
48+ }
49+}
50+
51+AbstractDBusServiceMonitor::~AbstractDBusServiceMonitor()
52+{
53+ delete m_watcher;
54+ delete m_dbusInterface;
55+}
56+
57+void AbstractDBusServiceMonitor::createInterface(const QString &)
58+{
59+ if (m_dbusInterface != nullptr) {
60+ delete m_dbusInterface;
61+ m_dbusInterface = nullptr;
62+ }
63+
64+ m_dbusInterface = new QDBusInterface(m_service, m_path, m_interface,
65+ QDBusConnection::sessionBus());
66+ Q_EMIT serviceAvailableChanged(true);
67+}
68+
69+void AbstractDBusServiceMonitor::destroyInterface(const QString &)
70+{
71+ if (m_dbusInterface != nullptr) {
72+ delete m_dbusInterface;
73+ m_dbusInterface = nullptr;
74+ }
75+
76+ Q_EMIT serviceAvailableChanged(false);
77+}
78+
79+QDBusInterface* AbstractDBusServiceMonitor::dbusInterface() const
80+{
81+ return m_dbusInterface;
82+}
83+
84+bool AbstractDBusServiceMonitor::serviceAvailable() const
85+{
86+ return m_dbusInterface != nullptr;
87+}