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Diffstat (limited to 'src/libs/kdtools/genericfactory.h')
-rw-r--r-- | src/libs/kdtools/genericfactory.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/libs/kdtools/genericfactory.h b/src/libs/kdtools/genericfactory.h new file mode 100644 index 000000000..8588ada5e --- /dev/null +++ b/src/libs/kdtools/genericfactory.h @@ -0,0 +1,91 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB) +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Installer Framework. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** 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 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef GENERICFACTORY_H +#define GENERICFACTORY_H + +#include "kdtoolsglobal.h" + +#include <QtCore/QHash> + +template <typename BASE, typename IDENTIFIER = QString, typename... ARGUMENTS> +class GenericFactory +{ +public: + virtual ~GenericFactory() {} + + typedef BASE *(*FactoryFunction)(ARGUMENTS...); + + template <typename DERIVED> + void registerProduct(const IDENTIFIER &id) + { + m_hash.insert(id, &GenericFactory::create<DERIVED>); + } + + void registerProduct(const IDENTIFIER &id, FactoryFunction func) + { + m_hash.insert(id, func); + } + + bool containsProduct(const IDENTIFIER &id) const + { + return m_hash.contains(id); + } + + BASE *create(const IDENTIFIER &id, ARGUMENTS... args) const + { + const auto it = m_hash.constFind(id); + if (it == m_hash.constEnd()) + return 0; + return (*it)(std::forward<ARGUMENTS>(args)...); + } + +protected: + GenericFactory() = default; + +private: + template <typename DERIVED> + static BASE *create(ARGUMENTS... args) + { + return new DERIVED(std::forward<ARGUMENTS>(args)...); + } + + GenericFactory(const GenericFactory &) = delete; + GenericFactory &operator=(const GenericFactory &) = delete; + +private: + QHash<IDENTIFIER, FactoryFunction> m_hash; +}; + +#endif // GENERICFACTORY_H |