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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef GCONFLAYER_H
#define GCONFLAYER_H
#include "qvaluespace_p.h"
#include "qvaluespacepublisher.h"
#include <QSet>
#include "gconfitem_p.h"
#include <QMutex>
QTM_BEGIN_NAMESPACE
class GConfLayer : public QAbstractValueSpaceLayer
{
Q_OBJECT
public:
GConfLayer();
virtual ~GConfLayer();
protected:
/*virtual*/ QString name();
/*virtual*/ bool startup(Type type);
/*virtual*/ QUuid id();
/*virtual*/ unsigned int order();
/*virtual*/ Handle item(Handle parent, const QString &subPath);
/*virtual*/ void removeHandle(Handle handle);
/*virtual*/ void setProperty(Handle handle, Properties properties);
/*virtual*/ bool value(Handle handle, QVariant *data);
/*virtual*/ bool value(Handle handle, const QString &subPath, QVariant *data);
/*virtual*/ QSet<QString> children(Handle handle);
/*virtual*/ QValueSpace::LayerOptions layerOptions() const;
/* QValueSpaceSubscriber functions */
/*virtual*/ bool supportsInterestNotification() const;
/*virtual*/ bool notifyInterest(Handle handle, bool interested);
/* QValueSpacePublisher functions */
/*virtual*/ bool setValue(QValueSpacePublisher *creator, Handle handle,
const QString &subPath, const QVariant &value);
/*virtual*/ bool removeValue(QValueSpacePublisher *creator, Handle handle,
const QString &subPath);
/*virtual*/ bool removeSubTree(QValueSpacePublisher *creator, Handle handle);
/*virtual*/ void addWatch(QValueSpacePublisher *creator, Handle handle);
/*virtual*/ void removeWatches(QValueSpacePublisher *creator, Handle parent);
/*virtual*/ void sync();
public:
static GConfLayer *instance();
private 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);
Handle getItem(Handle parent, const QString &subPath);
void doRemoveHandle(Handle handle);
private: //data
QSet<GConfHandle *> m_monitoringHandles;
QMap<QString, GConfItem *> m_monitoringItems;
QMutex m_mutex;
};
QTM_END_NAMESPACE
#endif //GCONFLAYER_H
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