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89 lines
3.4 KiB
C
89 lines
3.4 KiB
C
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/**************************************************************************
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**
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** This file is part of Qt Creator
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**
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** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** Commercial Usage
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**
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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**
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** If you are unsure which license is appropriate for your use, please
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** contact the sales department at http://qt.nokia.com/contact.
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**
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**************************************************************************/
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#ifndef INTERFACE_WRAP_HELPERS_H
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#define INTERFACE_WRAP_HELPERS_H
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#include <QtScript/QScriptEngine>
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namespace SharedTools {
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// Convert a QObjectInterface to Scriptvalue
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// To be registered as a magic creation function with qScriptRegisterMetaType().
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// (see registerQObjectInterface)
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template <class QObjectInterface>
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static QScriptValue qObjectInterfaceToScriptValue(QScriptEngine *engine, QObjectInterface* const &qoif)
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{
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if (!qoif)
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return QScriptValue(engine, QScriptValue::NullValue);
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QObject *qObject = const_cast<QObjectInterface *>(qoif);
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const QScriptEngine::QObjectWrapOptions wrapOptions =
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QScriptEngine::ExcludeChildObjects|QScriptEngine::ExcludeSuperClassMethods|QScriptEngine::ExcludeSuperClassProperties;
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return engine->newQObject(qObject, QScriptEngine::QtOwnership, wrapOptions);
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}
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// Convert Scriptvalue back to QObjectInterface
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// To be registered as a magic conversion function with qScriptRegisterMetaType().
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// (see registerQObjectInterface)
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template <class QObjectInterface>
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static void scriptValueToQObjectInterface(const QScriptValue &sv, QObjectInterface *&p)
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{
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QObject *qObject = sv.toQObject();
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p = qobject_cast<QObjectInterface*>(qObject);
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}
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// Magically register a Workbench interface derived from
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// ExtensionSystem::QObjectInterface class with the engine.
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// To avoid lifecycle issues, the script value is created on the QObject returned
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// by ExtensionSystem::QObjectInterface::qObject() and given the specified
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// prototype. By convention, ExtensionSystem::QObjectInterface::qObject() returns an
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// QObject that implements the interface, so it can be casted to it.
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template <class QObjectInterface, class Prototype>
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static void registerQObjectInterface(QScriptEngine *engine)
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{
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Prototype *protoType = new Prototype(engine);
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const QScriptValue scriptProtoType = engine->newQObject(protoType);
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const int metaTypeId = qScriptRegisterMetaType<QObjectInterface*>(
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engine,
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qObjectInterfaceToScriptValue<QObjectInterface>,
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scriptValueToQObjectInterface<QObjectInterface>,
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scriptProtoType);
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Q_UNUSED(metaTypeId)
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}
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} // namespace SharedTools
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#endif // INTERFACE_WRAP_HELPERS_H
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