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/****************************************************************************
**
** Copyright (C) 2018 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
//
// 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 QVALUESPACE_P_H
#define QVALUESPACE_P_H
#include <qvaluespace.h>
#include <QtCore/qobject.h>
QT_BEGIN_NAMESPACE
class QValueSpacePublisher;
QString qCanonicalPath(const QString &path);
class QAbstractValueSpaceLayer : public QObject
{
Q_OBJECT
public:
typedef quintptr Handle;
static const Handle InvalidHandle = ~Handle(0);
enum Properties { Publish = 0x00000001 };
virtual bool value(Handle handle, QVariant *data) = 0;
virtual bool value(Handle handle, const QString &subPath, QVariant *data) = 0;
virtual void removeHandle(Handle handle) = 0;
virtual void setProperty(Handle handle, Properties properties) = 0;
virtual Handle item(Handle parent, const QString &subPath) = 0;
virtual QSet<QString> children(Handle handle) = 0;
virtual QUuid id() = 0;
virtual QValueSpace::LayerOptions layerOptions() const = 0;
// QValueSpaceSubscriber functions
virtual bool notifyInterest(Handle handle, bool interested) = 0;
virtual bool supportsInterestNotification() const = 0;
// QValueSpacePublisher functions
virtual bool setValue(QValueSpacePublisher *creator, Handle handle, const QString &subPath, const QVariant &value) = 0;
virtual bool removeSubTree(QValueSpacePublisher *creator, Handle handle) = 0;
virtual bool removeValue(QValueSpacePublisher *creator, Handle handle, const QString &subPath) = 0;
virtual void addWatch(QValueSpacePublisher *creator, Handle handle) = 0;
virtual void removeWatches(QValueSpacePublisher *creator, Handle parent) = 0;
virtual void sync() = 0;
protected:
// QValueSpacePublisher functions
void emitInterestChanged(QValueSpacePublisher *publisher, const QString &attribute, bool interested);
Q_SIGNALS:
void handleChanged(quintptr);
};
QT_END_NAMESPACE
#endif // QVALUESPACE_P_H
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