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Diffstat (limited to 'src/designer/src/lib/uilib/extension.h')
| -rw-r--r-- | src/designer/src/lib/uilib/extension.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/designer/src/lib/uilib/extension.h b/src/designer/src/lib/uilib/extension.h new file mode 100644 index 000000000..9d6754e9e --- /dev/null +++ b/src/designer/src/lib/uilib/extension.h @@ -0,0 +1,109 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Designer of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** 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. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef EXTENSION_H +#define EXTENSION_H + +#include <QtCore/QString> +#include <QtCore/QObject> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +#define Q_TYPEID(IFace) QLatin1String(IFace##_iid) + +class QAbstractExtensionFactory +{ +public: + virtual ~QAbstractExtensionFactory() {} + + virtual QObject *extension(QObject *object, const QString &iid) const = 0; +}; +Q_DECLARE_INTERFACE(QAbstractExtensionFactory, "com.trolltech.Qt.QAbstractExtensionFactory") + +class QAbstractExtensionManager +{ +public: + virtual ~QAbstractExtensionManager() {} + + virtual void registerExtensions(QAbstractExtensionFactory *factory, const QString &iid) = 0; + virtual void unregisterExtensions(QAbstractExtensionFactory *factory, const QString &iid) = 0; + + virtual QObject *extension(QObject *object, const QString &iid) const = 0; +}; +Q_DECLARE_INTERFACE(QAbstractExtensionManager, "com.trolltech.Qt.QAbstractExtensionManager") + +#if defined(Q_CC_MSVC) && (_MSC_VER < 1300) + +template <class T> +inline T qt_extension_helper(QAbstractExtensionManager *, QObject *, T) +{ return 0; } + +template <class T> +inline T qt_extension(QAbstractExtensionManager* manager, QObject *object) +{ return qt_extension_helper(manager, object, T(0)); } + +#define Q_DECLARE_EXTENSION_INTERFACE(IFace, IId) \ +const char * const IFace##_iid = IId; \ +Q_DECLARE_INTERFACE(IFace, IId) \ +template <> inline IFace *qt_extension_helper<IFace *>(QAbstractExtensionManager *manager, QObject *object, IFace *) \ +{ QObject *extension = manager->extension(object, Q_TYPEID(IFace)); return (IFace *)(extension ? extension->qt_metacast(IFace##_iid) : 0); } + +#else + +template <class T> +inline T qt_extension(QAbstractExtensionManager* manager, QObject *object) +{ return 0; } + +#define Q_DECLARE_EXTENSION_INTERFACE(IFace, IId) \ +const char * const IFace##_iid = IId; \ +Q_DECLARE_INTERFACE(IFace, IId) \ +template <> inline IFace *qt_extension<IFace *>(QAbstractExtensionManager *manager, QObject *object) \ +{ QObject *extension = manager->extension(object, Q_TYPEID(IFace)); return extension ? static_cast<IFace *>(extension->qt_metacast(IFace##_iid)) : static_cast<IFace *>(0); } + +#endif + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // EXTENSION_H |