git.iko.soy/unity8
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unity8/src/libunity8-private/unitydbusobject.cpp
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1/*
2 * Copyright (C) 2014 Canonical, Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 3.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
17#include "unitydbusobject.h"
19#include <QDebug>
20#include <QDBusMessage>
21#include <QMetaClassInfo>
22#include <QTimer>
24UnityDBusObject::UnityDBusObject(const QString &path, const QString &service, bool async, QObject *parent)
25 : QObject(parent)
26 , m_connection(QDBusConnection::sessionBus())
27 , m_path(path)
28 , m_service(service)
30 if (async) {
31 // Use a zero-timer to let Qml finish loading before we announce on DBus
32 QTimer::singleShot(0, this, &UnityDBusObject::registerObject);
33 } else {
34 registerObject();
35 }
38UnityDBusObject::~UnityDBusObject()
40 // Leave service in place because multiple objects may be registered with
41 // the same service. But we know we own the object path and can unregister it.
42 m_connection.unregisterObject(path());
45QDBusConnection UnityDBusObject::connection() const
47 return m_connection;
50QString UnityDBusObject::path() const
52 return m_path;
55// Manually emit a PropertiesChanged signal over DBus, because QtDBus
56// doesn't do it for us on Q_PROPERTIES, oddly enough.
57void UnityDBusObject::notifyPropertyChanged(const QString& propertyName, const QVariant &value)
59 QDBusMessage message;
60 QString interface;
61 QVariantMap changedProps;
63 interface = metaObject()->classInfo(metaObject()->indexOfClassInfo("D-Bus Interface")).value();
64 changedProps.insert(propertyName, value);
66 message = QDBusMessage::createSignal(path(),
67 QStringLiteral("org.freedesktop.DBus.Properties"),
68 QStringLiteral("PropertiesChanged"));
69 message << interface;
70 message << changedProps;
71 message << QStringList();
73 connection().send(message);
76void UnityDBusObject::registerObject()
78 if (!m_connection.registerObject(m_path, this, QDBusConnection::ExportScriptableContents)) {
79 qWarning() << "Unable to register DBus object" << m_path;
80 }
81 if (!m_service.isEmpty()) {
82 if (!m_connection.registerService(m_service)) {
83 qWarning() << "Unable to register DBus service" << m_service;
84 }
85 }