diff options
Diffstat (limited to 'tools/designer/src/lib/extension/extension.h')
| -rw-r--r-- | tools/designer/src/lib/extension/extension.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/tools/designer/src/lib/extension/extension.h b/tools/designer/src/lib/extension/extension.h new file mode 100644 index 0000000..1ccd4ef --- /dev/null +++ b/tools/designer/src/lib/extension/extension.h @@ -0,0 +1,109 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the Qt Designer of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, 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 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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 |