/**************************************************************************** ** ** Copyright (C) 2015 The Qt Company Ltd. ** Contact: http://www.qt.io/licensing/ ** ** This file is part of the Qt3Support module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** 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://www.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. ** ** 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. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef Q3CLEANUPHANDLER_H #define Q3CLEANUPHANDLER_H #include QT_BEGIN_HEADER QT_BEGIN_NAMESPACE QT_MODULE(Qt3SupportLight) template class Q3CleanupHandler { QListData p; public: inline Q3CleanupHandler() { p.d = 0; } ~Q3CleanupHandler() { if (p.d) { for (int i = 0; i < p.size(); ++i) { T** t = static_cast(*p.at(i)); delete *t; *t = 0; } qFree(p.d); p.d = 0; } } T* add(T **object) { if (!p.d) { p.d = &QListData::shared_null; p.d->ref.ref(); p.detach(); } *p.prepend() = object; return *object; } void remove(T **object) { if (p.d) for (int i = 0; i < p.size(); ++i) if (*p.at(i) == object) p.remove(i--); } }; template class Q3SingleCleanupHandler { T **object; public: inline Q3SingleCleanupHandler() : object(0) {} inline ~Q3SingleCleanupHandler() { if (object) { delete *object; *object = 0; } } inline T* set(T **o) { object = o; return *object; } inline void reset() { object = 0; } }; QT_END_NAMESPACE QT_END_HEADER #endif //Q3CLEANUPHANDLER_H