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/*
propertybinder.h
This file is part of GammaRay, the Qt application inspection and
manipulation tool.
Copyright (C) 2015-2018 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
Author: Volker Krause <volker.krause@kdab.com>
Licensees holding valid commercial KDAB GammaRay licenses may use this file in
accordance with GammaRay Commercial License Agreement provided with the Software.
Contact info@kdab.com if any conditions of this licensing are not clear to you.
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, either version 2 of the License, or
(at your option) any later version.
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/>.
*/
#ifndef GAMMARAY_PROPERTYBINDER_H
#define GAMMARAY_PROPERTYBINDER_H
#include "gammaray_ui_export.h"
#include <QMetaProperty>
#include <QObject>
#include <QPointer>
#include <QVector>
namespace GammaRay {
/** Helper class to bind two properties together, similar to QML. */
class GAMMARAY_UI_EXPORT PropertyBinder : public QObject
{
Q_OBJECT
public:
/** Creates a new PropertyBinder for syncing properties between @p source and @p destination.
* No properties are synchronized by default, use add() to change this.
* No initial synchronization is performed, called syncSourceToDestination() to change that.
*/
explicit PropertyBinder(QObject *source, QObject *destination);
/** Keeps @p sourceProp of @p source in sync with @p destProp of @p destination.
* At least the source property must have a change notification signal.
* This is a convenience overload for syncing a single property pair, initial synchronization
* from source to destination happens automatically.
*/
explicit PropertyBinder(QObject *source, const char *sourceProp, QObject *destination,
const char *destProp);
~PropertyBinder();
/** Adds another binding between @p sourceProp and @p destProp.
* At least the source property must have a change notification signal.
*/
void add(const char *sourceProp, const char *destProp);
public slots:
/** Use this for initial/explicit source to destination synchronization. */
void syncSourceToDestination();
private slots:
/** Same as the above, for the opposite direction. */
void syncDestinationToSource();
private:
QObject *m_source;
QPointer<QObject> m_destination;
struct Binding {
QMetaProperty sourceProperty;
QMetaProperty destinationProperty;
};
QVector<Binding> m_properties;
bool m_lock;
};
}
#endif // GAMMARAY_PROPERTYBINDER_H
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