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lomiridbusvirtualobject.cpp
/*
* Copyright (C) 2014 Canonical Ltd.
*
* 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; version 3.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "lomiridbusvirtualobject.h"
#include <QDebug>
#include <QDBusMessage>
#include <QTimer>
LomiriDBusVirtualObject::LomiriDBusVirtualObject(const QString &path, const QString &service, bool async, QObject *parent)
: QDBusVirtualObject(parent)
, m_connection(QDBusConnection::sessionBus())
, m_path(path)
, m_service(service)
{
if (async) {
// Use a zero-timer to let Qml finish loading before we announce on DBus
QTimer::singleShot(0, this, &LomiriDBusVirtualObject::registerObject);
} else {
registerObject();
}
}
LomiriDBusVirtualObject::~LomiriDBusVirtualObject()
{
// Leave service in place because multiple objects may be registered with
// the same service. But we know we own the object path and can unregister it.
m_connection.unregisterObject(path());
}
QDBusConnection LomiriDBusVirtualObject::connection() const
{
return m_connection;
}
QString LomiriDBusVirtualObject::path() const
{
return m_path;
}
// Manually emit a PropertiesChanged signal over DBus, because QtDBus
// doesn't do it for us on Q_PROPERTIES, oddly enough.
void LomiriDBusVirtualObject::notifyPropertyChanged(const QString& interface, const QString& node, const QString& propertyName, const QVariant &value)
{
QDBusMessage message;
QVariantMap changedProps;
changedProps.insert(propertyName, value);
message = QDBusMessage::createSignal(path() + "/" + node,
QStringLiteral("org.freedesktop.DBus.Properties"),
QStringLiteral("PropertiesChanged"));
message << interface;
message << changedProps;
message << QStringList();
connection().send(message);
}
void LomiriDBusVirtualObject::registerObject()
{
if (!m_connection.registerVirtualObject(m_path, this, QDBusConnection::VirtualObjectRegisterOption::SubPath)) {
qWarning() << "Unable to register DBus object" << m_path;
}
if (!m_service.isEmpty()) {
if (!m_connection.registerService(m_service)) {
qWarning() << "Unable to register DBus service" << m_service;
}
}
}