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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/


#ifndef DBUSCONNECTION_H
#define DBUSCONNECTION_H

#include <QtCore/QString>
#include <QtDBus/QDBusConnection>
#include <QtDBus/QDBusVariant>

QT_BEGIN_NAMESPACE

class QDBusServiceWatcher;

class DBusConnection : public QObject
{
    Q_OBJECT

public:
    DBusConnection(QObject *parent = 0);
    QDBusConnection connection() const;
    bool isEnabled() const { return m_enabled; }

Q_SIGNALS:
    // Emitted when the global accessibility status changes to enabled
    void enabledChanged(bool enabled);

private Q_SLOTS:
    void serviceRegistered();
    void serviceUnregistered();
    void enabledStateCallback(const QDBusVariant &enabled);
//    void enabledStateChanged(const QDBusVariant &);
    void connectA11yBus(const QString &address);

    void dbusError(const QDBusError &error);

private:
    QString getAccessibilityBusAddress() const;

    QDBusServiceWatcher *dbusWatcher;
    QDBusConnection m_a11yConnection;
    bool m_enabled;
};

QT_END_NAMESPACE

#endif // DBUSCONNECTION_H