/****************************************************************************
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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****************************************************************************/

#ifndef QQMLBOUNDSIGNAL_P_H
#define QQMLBOUNDSIGNAL_P_H

//
//  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.
//

#include "qqmlexpression.h"

#include <QtCore/qmetaobject.h>

#include <private/qobject_p.h>

QT_BEGIN_NAMESPACE

class Q_QML_EXPORT QQmlAbstractBoundSignal
{
public:
    QQmlAbstractBoundSignal();
    virtual ~QQmlAbstractBoundSignal();

    virtual int index() const = 0;
    virtual QQmlExpression *expression() const = 0;
    virtual QQmlExpression *setExpression(QQmlExpression *) = 0;
    virtual QObject *object() = 0;

    void addToObject();

private:
    friend class QQmlData;
    friend class QQmlPropertyPrivate;
    friend class QQmlEngineDebugService;
    QQmlAbstractBoundSignal **m_prevSignal;
    QQmlAbstractBoundSignal  *m_nextSignal;
};

class QQmlBoundSignalParameters;
class Q_QML_EXPORT QQmlBoundSignal : public QObject,
                                     public QQmlAbstractBoundSignal
{
public:
    QQmlBoundSignal(QObject *scope, const QMetaMethod &signal, QObject *owner);
    virtual ~QQmlBoundSignal();

    int index() const;

    QQmlExpression *expression() const;
    QQmlExpression *setExpression(QQmlExpression *);
    QObject *object() { return m_owner; }

    bool isEvaluating() const { return m_isEvaluating; }

protected:
    virtual int qt_metacall(QMetaObject::Call c, int id, void **a);

private:
    QQmlExpression *m_expression;
    QMetaMethod m_signal;
    bool m_paramsValid : 1;
    bool m_isEvaluating : 1;
    QQmlBoundSignalParameters *m_params;
    QObject *m_owner;
};

QT_END_NAMESPACE

#endif // QQMLBOUNDSIGNAL_P_H