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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** 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.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#ifndef INTERFACE_WRAP_HELPERS_H
#define INTERFACE_WRAP_HELPERS_H
#include <QtScript/QScriptEngine>
namespace SharedTools {
// Convert a QObjectInterface to Scriptvalue
// To be registered as a magic creation function with qScriptRegisterMetaType().
// (see registerQObjectInterface)
template <class QObjectInterface>
static QScriptValue qObjectInterfaceToScriptValue(QScriptEngine *engine, QObjectInterface* const &qoif)
{
if (!qoif)
return QScriptValue(engine, QScriptValue::NullValue);
QObject *qObject = const_cast<QObjectInterface *>(qoif);
const QScriptEngine::QObjectWrapOptions wrapOptions =
QScriptEngine::ExcludeChildObjects|QScriptEngine::ExcludeSuperClassMethods|QScriptEngine::ExcludeSuperClassProperties;
return engine->newQObject(qObject, QScriptEngine::QtOwnership, wrapOptions);
}
// Convert Scriptvalue back to QObjectInterface
// To be registered as a magic conversion function with qScriptRegisterMetaType().
// (see registerQObjectInterface)
template <class QObjectInterface>
static void scriptValueToQObjectInterface(const QScriptValue &sv, QObjectInterface *&p)
{
QObject *qObject = sv.toQObject();
p = qobject_cast<QObjectInterface*>(qObject);
}
// Magically register a Workbench interface derived from
// ExtensionSystem::QObjectInterface class with the engine.
// To avoid lifecycle issues, the script value is created on the QObject returned
// by ExtensionSystem::QObjectInterface::qObject() and given the specified
// prototype. By convention, ExtensionSystem::QObjectInterface::qObject() returns an
// QObject that implements the interface, so it can be casted to it.
template <class QObjectInterface, class Prototype>
static void registerQObjectInterface(QScriptEngine *engine)
{
Prototype *protoType = new Prototype(engine);
const QScriptValue scriptProtoType = engine->newQObject(protoType);
const int metaTypeId = qScriptRegisterMetaType<QObjectInterface*>(
engine,
qObjectInterfaceToScriptValue<QObjectInterface>,
scriptValueToQObjectInterface<QObjectInterface>,
scriptProtoType);
Q_UNUSED(metaTypeId)
}
} // namespace SharedTools
#endif // INTERFACE_WRAP_HELPERS_H
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