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37a66b2340
git-svn-id: svn://svn.openpilot.org/OpenPilot/trunk@281 ebee16cc-31ac-478f-84a7-5cbb03baadba
88 lines
3.3 KiB
C++
88 lines
3.3 KiB
C++
/**
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******************************************************************************
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*
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* @file interface_wrap_helpers.h
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
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* Parts by Nokia Corporation (qt-info@nokia.com) Copyright (C) 2009.
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* @brief
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* @see The GNU Public License (GPL) Version 3
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* @defgroup
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* @{
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*
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*****************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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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