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111 lines
3.2 KiB
111 lines
3.2 KiB
15 years ago
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt3Support module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef Q3CLEANUPHANDLER_H
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#define Q3CLEANUPHANDLER_H
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#include <QtCore/qlist.h>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Qt3SupportLight)
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template<class T>
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class Q3CleanupHandler
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{
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QListData p;
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public:
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inline Q3CleanupHandler()
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{ p.d = 0; }
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~Q3CleanupHandler()
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{
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if (p.d) {
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for (int i = 0; i < p.size(); ++i) {
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T** t = static_cast<T**>(*p.at(i));
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delete *t;
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*t = 0;
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}
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qFree(p.d);
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p.d = 0;
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}
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}
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T* add(T **object)
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{
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if (!p.d) {
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p.d = &QListData::shared_null;
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p.d->ref.ref();
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p.detach();
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}
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*p.prepend() = object;
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return *object;
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}
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void remove(T **object)
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{
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if (p.d)
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for (int i = 0; i < p.size(); ++i)
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if (*p.at(i) == object)
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p.remove(i--);
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}
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};
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template<class T>
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class Q3SingleCleanupHandler
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{
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T **object;
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public:
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inline Q3SingleCleanupHandler()
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: object(0) {}
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inline ~Q3SingleCleanupHandler()
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{ if (object) { delete *object; *object = 0; } }
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inline T* set(T **o)
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{ object = o; return *object; }
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inline void reset() { object = 0; }
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};
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif //Q3CLEANUPHANDLER_H
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