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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QMLBINDING_H
#define QMLBINDING_H
#include "qml.h"
#include "qmlpropertyvaluesource.h"
#include "qmlexpression.h"
#include <QtCore/QObject>
#include <QtCore/QMetaProperty>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Declarative)
class Q_DECLARATIVE_EXPORT QmlAbstractBinding
{
public:
QmlAbstractBinding();
virtual ~QmlAbstractBinding();
virtual void destroy();
virtual QString expression() const;
void setEnabled(bool e) { setEnabled(e, QmlMetaProperty::DontRemoveBinding); }
virtual void setEnabled(bool, QmlMetaProperty::WriteFlags) = 0;
virtual int propertyIndex() = 0;
void update() { update(QmlMetaProperty::DontRemoveBinding); }
virtual void update(QmlMetaProperty::WriteFlags) = 0;
void addToObject(QObject *);
void removeFromObject();
protected:
void clear();
private:
friend class QmlDeclarativeData;
friend class QmlMetaProperty;
friend class QmlMetaPropertyPrivate;
friend class QmlVME;
QObject *m_object;
QmlAbstractBinding **m_mePtr;
QmlAbstractBinding **m_prevBinding;
QmlAbstractBinding *m_nextBinding;
};
class QmlContext;
class QmlBindingPrivate;
class Q_DECLARATIVE_EXPORT QmlBinding : public QmlExpression,
public QmlAbstractBinding
{
Q_OBJECT
public:
QmlBinding(const QString &, QObject *, QmlContext *, QObject *parent=0);
QmlBinding(void *, QmlRefCount *, QObject *, QmlContext *, const QString &, int,
QObject *parent);
~QmlBinding();
void setTarget(const QmlMetaProperty &);
QmlMetaProperty property() const;
bool enabled() const;
// Inherited from QmlAbstractBinding
virtual void setEnabled(bool, QmlMetaProperty::WriteFlags flags);
virtual int propertyIndex();
virtual void update(QmlMetaProperty::WriteFlags flags);
virtual QString expression() const;
public Q_SLOTS:
void update() { update(QmlMetaProperty::DontRemoveBinding); }
protected:
void emitValueChanged();
private:
Q_DECLARE_PRIVATE(QmlBinding)
};
QT_END_NAMESPACE
QML_DECLARE_TYPE(QmlBinding);
QT_END_HEADER
#endif // QMLBINDING_H
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