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/****************************************************************************
**
** ...
**
** Copyright (C) 2001-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the tools module of the Qt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free Qt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.QPL
** included in the packaging of this file. Licensees holding valid Qt
** Commercial licenses may use this file in accordance with the Qt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#ifndef QCLEANUPHANDLER_H
#define QCLEANUPHANDLER_H
#ifndef QT_H
#include "qptrlist.h"
#endif // QT_H
template<class Type>
class QCleanupHandler
{
public:
QCleanupHandler() : cleanupObjects( 0 ) {}
~QCleanupHandler() { clear(); }
Type* add( Type **object ) {
if ( !cleanupObjects )
cleanupObjects = new QPtrList<Type*>;
cleanupObjects->insert( 0, object );
return *object;
}
void remove( Type **object ) {
if ( !cleanupObjects )
return;
if ( cleanupObjects->findRef( object ) >= 0 )
(void) cleanupObjects->take();
}
bool isEmpty() const {
return cleanupObjects ? cleanupObjects->isEmpty() : TRUE;
}
void clear() {
if ( !cleanupObjects )
return;
QPtrListIterator<Type*> it( *cleanupObjects );
Type **object;
while ( ( object = it.current() ) ) {
delete *object;
*object = 0;
cleanupObjects->remove( object );
}
delete cleanupObjects;
cleanupObjects = 0;
}
private:
QPtrList<Type*> *cleanupObjects;
};
template<class Type>
class QSingleCleanupHandler
{
public:
QSingleCleanupHandler() : object( 0 ) {}
~QSingleCleanupHandler() {
if ( object ) {
delete *object;
*object = 0;
}
}
Type* set( Type **o ) {
object = o;
return *object;
}
void reset() { object = 0; }
private:
Type **object;
};
template<class Type>
class QSharedCleanupHandler
{
public:
QSharedCleanupHandler() : object( 0 ) {}
~QSharedCleanupHandler() {
if ( object ) {
if ( (*object)->deref() )
delete *object;
*object = 0;
}
}
Type* set( Type **o ) {
object = o;
return *object;
}
void reset() { object = 0; }
private:
Type **object;
};
#endif //QCLEANUPHANDLER_H
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