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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qmlproxymetaobject_p.h"


QT_BEGIN_NAMESPACE
QmlProxyMetaObject::QmlProxyMetaObject(QObject *obj, QList<ProxyData> *mList)
: metaObjects(mList), proxies(0), parent(0), object(obj)
{
#ifdef QMLPROXYMETAOBJECT_DEBUG
    qWarning() << "QmlProxyMetaObject" << obj->metaObject()->className();
#endif

    *static_cast<QMetaObject *>(this) = *metaObjects->first().metaObject;

    QObjectPrivate *op = QObjectPrivate::get(obj);
    if (op->metaObject)
        parent = static_cast<QAbstractDynamicMetaObject*>(op->metaObject);

    op->metaObject = this;

#ifdef QMLPROXYMETAOBJECT_DEBUG
    const QMetaObject *mo = obj->metaObject();
    while(mo) {
        qWarning() << "    " << mo->className();
        mo = mo->superClass();
    }
#endif
}

QmlProxyMetaObject::~QmlProxyMetaObject()
{
    if (parent)
        delete parent;
    parent = 0;

    if (proxies)
        delete [] proxies;
    proxies = 0;
}

int QmlProxyMetaObject::metaCall(QMetaObject::Call c, int id, void **a)
{
    if ((c == QMetaObject::ReadProperty ||
        c == QMetaObject::WriteProperty) &&
            id >= metaObjects->last().propertyOffset) {

        for (int ii = 0; ii < metaObjects->count(); ++ii) {
            const ProxyData &data = metaObjects->at(ii);
            if (id >= data.propertyOffset) {
                if (!proxies) {
                    proxies = new QObject*[metaObjects->count()];
                    ::memset(proxies, 0, 
                             sizeof(QObject *) * metaObjects->count());
                }

                if (!proxies[ii])
                    proxies[ii] = data.createFunc(object);

                int proxyOffset = proxies[ii]->metaObject()->propertyOffset();
                int proxyId = id - data.propertyOffset + proxyOffset;

                return proxies[ii]->qt_metacall(c, proxyId, a);
            }
        }
    }

    if (parent)
        return parent->metaCall(c, id, a);
    else
        return object->qt_metacall(c, id, a);
}

QT_END_NAMESPACE