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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtSystems module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#ifndef GCONFLAYER_P_H
#define GCONFLAYER_P_H
#if !defined(QT_NO_GCONFLAYER)
#include <qvaluespacepublisher.h>
#include "gconfitem_p.h"
#include "qvaluespace_p.h"
#include <QtCore/qmutex.h>
#include <QtCore/qset.h>
QT_BEGIN_NAMESPACE
class GConfLayer : public QAbstractValueSpaceLayer
{
Q_OBJECT
public:
GConfLayer();
virtual ~GConfLayer();
static GConfLayer *instance();
protected:
bool value(Handle handle, QVariant *data);
bool value(Handle handle, const QString &subPath, QVariant *data);
void removeHandle(Handle handle);
void setProperty(Handle handle, Properties properties);
Handle item(Handle parent, const QString &subPath);
QSet<QString> children(Handle handle);
QUuid id();
QValueSpace::LayerOptions layerOptions() const;
// QValueSpaceSubscriber functions
bool notifyInterest(Handle handle, bool interested);
bool supportsInterestNotification() const;
// QValueSpacePublisher functions
void addWatch(QValueSpacePublisher *creator, Handle handle);
bool removeSubTree(QValueSpacePublisher *creator, Handle handle);
void removeWatches(QValueSpacePublisher *creator, Handle parent);
bool removeValue(QValueSpacePublisher *creator, Handle handle, const QString &subPath);
bool setValue(QValueSpacePublisher *creator, Handle handle, const QString &subPath, const QVariant &value);
void sync();
private Q_SLOTS:
void notifyChanged(const QString &key, const QVariant &value);
private:
struct GConfHandle
{
GConfHandle(const QString &p)
: path(p), refCount(1)
{
}
QString path;
unsigned int refCount;
};
QHash<QString, GConfHandle *> m_handles;
GConfHandle *gConfHandle(Handle handle)
{
if (handle == InvalidHandle)
return 0;
GConfHandle *h = reinterpret_cast<GConfHandle *>(handle);
if (m_handles.values().contains(h))
return h;
return 0;
}
//private methods not locking a mutex
bool getValue(Handle handle, const QString &subPath, QVariant *data);
void doRemoveHandle(Handle handle);
Handle getItem(Handle parent, const QString &subPath);
private:
QMap<QString, GConfItem *> m_monitoringItems;
QMutex m_mutex;
QSet<GConfHandle *> m_monitoringHandles;
};
QT_END_NAMESPACE
#endif // QT_NO_GCONFLAYER
#endif //GCONFLAYER_P_H
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