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**
** Copyright (C) 2015 The Qt Company Ltd.
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****************************************************************************/

#ifndef QQUICKPROPERTYCHANGES_H
#define QQUICKPROPERTYCHANGES_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 "qquickstatechangescript_p.h"
#include <private/qqmlcustomparser_p.h>

QT_BEGIN_NAMESPACE

class QQuickPropertyChangesPrivate;
class Q_QUICK_PRIVATE_EXPORT QQuickPropertyChanges : public QQuickStateOperation
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QQuickPropertyChanges)

    Q_PROPERTY(QObject *target READ object WRITE setObject)
    Q_PROPERTY(bool restoreEntryValues READ restoreEntryValues WRITE setRestoreEntryValues)
    Q_PROPERTY(bool explicit READ isExplicit WRITE setIsExplicit)
public:
    QQuickPropertyChanges();
    ~QQuickPropertyChanges();

    QObject *object() const;
    void setObject(QObject *);

    bool restoreEntryValues() const;
    void setRestoreEntryValues(bool);

    bool isExplicit() const;
    void setIsExplicit(bool);

    virtual ActionList actions();

    bool containsProperty(const QString &name) const;
    bool containsValue(const QString &name) const;
    bool containsExpression(const QString &name) const;
    void changeValue(const QString &name, const QVariant &value);
    void changeExpression(const QString &name, const QString &expression);
    void removeProperty(const QString &name);
    QVariant value(const QString &name) const;
    QString expression(const QString &name) const;

    void detachFromState();
    void attachToState();

    QVariant property(const QString &name) const;
};

class QQuickPropertyChangesParser : public QQmlCustomParser
{
public:
    QQuickPropertyChangesParser()
    : QQmlCustomParser(AcceptsAttachedProperties) {}

    void verifyList(const QV4::CompiledData::Unit *qmlUnit, const QV4::CompiledData::Binding *binding);

    virtual void verifyBindings(const QV4::CompiledData::Unit *qmlUnit, const QList<const QV4::CompiledData::Binding *> &props);
    virtual void applyBindings(QObject *obj, QQmlCompiledData *cdata, const QList<const QV4::CompiledData::Binding *> &bindings);
};


QT_END_NAMESPACE

QML_DECLARE_TYPE(QQuickPropertyChanges)

#endif // QQUICKPROPERTYCHANGES_H