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

#ifndef QMLCONTEXT_P_H
#define QMLCONTEXT_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 "qmlcontext.h"

#include "qmldeclarativedata_p.h"
#include "qmlengine_p.h"
#include "qmlintegercache_p.h"
#include "qmltypenamecache_p.h"

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

#include <private/qobject_p.h>
#include <private/qguard_p.h>

QT_BEGIN_NAMESPACE

class QmlContext;
class QmlExpression;
class QmlEngine;
class QmlExpression;
class QmlExpressionPrivate;
class QmlAbstractExpression;
class QmlBinding_Id;

class Q_DECLARATIVE_EXPORT QmlContextPrivate : public QObjectPrivate
{
    Q_DECLARE_PUBLIC(QmlContext)
public:
    QmlContextPrivate();

    QmlContext *parent;
    QmlEngine *engine;
    bool isInternal;

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

    QObjectList defaultObjects;
    int highPriorityCount;

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

    QUrl url;

    QmlTypeNameCache *imports;

    void init();

    void invalidateEngines();
    void refreshExpressions();
    QSet<QmlContext *> childContexts;

    QmlAbstractExpression *expressions;

    QmlDeclarativeData *contextObjects;

    struct ContextGuard : public QGuard<QObject>
    {
        ContextGuard() : priv(0), bindings(0) {}
        QmlContextPrivate *priv;
        QmlBinding_Id *bindings;
        ContextGuard &operator=(QObject *obj) {
            (QGuard<QObject>&)*this = obj; return *this;
        }
        void objectDestroyed(QObject *) { priv->destroyed(this); }
    };
    ContextGuard *idValues;
    int idValueCount;
    void setIdProperty(int, QObject *);
    void setIdPropertyData(QmlIntegerCache *);
    void destroyed(ContextGuard *);

    static QmlContextPrivate *get(QmlContext *context) {
        return static_cast<QmlContextPrivate *>(QObjectPrivate::get(context));
    }

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

QT_END_NAMESPACE

#endif // QMLCONTEXT_P_H