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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
** this package.
**
** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "private/qdeclarativefastproperties_p.h"
#include <private/qdeclarativeitem_p.h>
QT_BEGIN_NAMESPACE
// Adding entries to the QDeclarativeFastProperties class allows the QML
// binding optimizer to bypass Qt's meta system and read and, more
// importantly, subscribe to properties directly. Any property that is
// primarily read from bindings is a candidate for inclusion as a fast
// property.
static void QObject_objectName(QObject *object, void *output, QDeclarativeNotifierEndpoint *endpoint)
{
if (endpoint)
endpoint->connect(QDeclarativeData::get(object, true)->objectNameNotifier());
*((QString *)output) = object->objectName();
}
QDeclarativeFastProperties::QDeclarativeFastProperties()
{
add(&QDeclarativeItem::staticMetaObject, QDeclarativeItem::staticMetaObject.indexOfProperty("parent"),
QDeclarativeItemPrivate::parentProperty);
add(&QObject::staticMetaObject, QObject::staticMetaObject.indexOfProperty("objectName"),
QObject_objectName);
}
int QDeclarativeFastProperties::accessorIndexForProperty(const QMetaObject *metaObject, int propertyIndex)
{
Q_ASSERT(metaObject);
Q_ASSERT(propertyIndex >= 0);
// Find the "real" metaObject
while (metaObject->propertyOffset() > propertyIndex)
metaObject = metaObject->superClass();
QHash<QPair<const QMetaObject *, int>, int>::Iterator iter =
m_index.find(qMakePair(metaObject, propertyIndex));
if (iter != m_index.end())
return *iter;
else
return -1;
}
void QDeclarativeFastProperties::add(const QMetaObject *metaObject, int propertyIndex, Accessor accessor)
{
Q_ASSERT(metaObject);
Q_ASSERT(propertyIndex >= 0);
// Find the "real" metaObject
while (metaObject->propertyOffset() > propertyIndex)
metaObject = metaObject->superClass();
QPair<const QMetaObject *, int> data = qMakePair(metaObject, propertyIndex);
int accessorIndex = m_accessors.count();
m_accessors.append(accessor);
m_index.insert(data, accessorIndex);
}
QT_END_NAMESPACE
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