--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/qt3support/tools/q3cleanuphandler.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,110 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt3Support module 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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef Q3CLEANUPHANDLER_H
+#define Q3CLEANUPHANDLER_H
+
+#include <QtCore/qlist.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Qt3SupportLight)
+
+template<class T>
+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<T**>(*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 T>
+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