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****************************************************************************/

#ifndef QDECLARATIVECONTEXT_P_H
#define QDECLARATIVECONTEXT_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 "qdeclarativecontext.h"

#include "qdeclarativedeclarativedata_p.h"
#include "qdeclarativeengine_p.h"
#include "qdeclarativeintegercache_p.h"
#include "qdeclarativetypenamecache_p.h"
#include "qdeclarativenotifier_p.h"

#include <QtCore/qhash.h>
#include <QtScript/qscriptvalue.h>
#include <QtCore/qset.h>

#include <private/qobject_p.h>
#include "qdeclarativeguard_p.h"

QT_BEGIN_NAMESPACE

class QDeclarativeContext;
class QDeclarativeExpression;
class QDeclarativeEngine;
class QDeclarativeExpression;
class QDeclarativeExpressionPrivate;
class QDeclarativeAbstractExpression;
class QDeclarativeBinding_Id;
class QDeclarativeCompiledBindings;

class Q_DECLARATIVE_EXPORT QDeclarativeContextPrivate : public QObjectPrivate
{
    Q_DECLARE_PUBLIC(QDeclarativeContext)
public:
    QDeclarativeContextPrivate();

    QDeclarativeContext *parent;
    QDeclarativeEngine *engine;

    bool isInternal;

    QDeclarativeIntegerCache *propertyNames;
    QList<QVariant> propertyValues;
    int notifyIndex;

    QObject *contextObject;

    QList<QScriptValue> scripts;
    void addScript(const QDeclarativeParser::Object::ScriptBlock &, QObject *);

    QUrl url;

    QDeclarativeTypeNameCache *imports;

    void init();

    void invalidateEngines();
    void refreshExpressions();

    QDeclarativeContext *childContexts;

    QDeclarativeContext  *nextChild;
    QDeclarativeContext **prevChild;

    QDeclarativeAbstractExpression *expressions;

    QDeclarativeDeclarativeData *contextObjects;

    struct ContextGuard : public QDeclarativeGuard<QObject>
    {
        inline ContextGuard();
        inline ContextGuard &operator=(QObject *obj);
        inline virtual void objectDestroyed(QObject *);

        QDeclarativeContextPrivate *priv;
        QDeclarativeNotifier bindings;
    };
    ContextGuard *idValues;
    int idValueCount;
    void setIdProperty(int, QObject *);
    void setIdPropertyData(QDeclarativeIntegerCache *);
    void destroyed(ContextGuard *);

    static QDeclarativeContextPrivate *get(QDeclarativeContext *context) {
        return static_cast<QDeclarativeContextPrivate *>(QObjectPrivate::get(context));
    }
    static QDeclarativeContext *get(QDeclarativeContextPrivate *context) {
        return static_cast<QDeclarativeContext *>(context->q_func());
    }

    QDeclarativeCompiledBindings *optimizedBindings;

    // Only used for debugging
    QList<QPointer<QObject> > instances;

    static int context_count(QDeclarativeListProperty<QObject> *);
    static QObject *context_at(QDeclarativeListProperty<QObject> *, int);
};

QDeclarativeContextPrivate::ContextGuard::ContextGuard() 
: priv(0)
{
}

QDeclarativeContextPrivate::ContextGuard &QDeclarativeContextPrivate::ContextGuard::operator=(QObject *obj) 
{
    (QDeclarativeGuard<QObject>&)*this = obj; return *this;
}

void QDeclarativeContextPrivate::ContextGuard::objectDestroyed(QObject *) 
{ 
    priv->destroyed(this); 
}

QT_END_NAMESPACE

#endif // QDECLARATIVECONTEXT_P_H