/**************************************************************************** | |
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
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** This file is part of the QtDeclarative module of the Qt Toolkit. | |
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** GNU Lesser General Public License Usage | |
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** GNU General Public License Usage | |
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** file. Please review the following information to ensure the GNU General | |
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#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 |