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Diffstat (limited to 'src/tools/qcleanuphandler.h')
-rw-r--r-- | src/tools/qcleanuphandler.h | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/src/tools/qcleanuphandler.h b/src/tools/qcleanuphandler.h new file mode 100644 index 000000000..538890dc3 --- /dev/null +++ b/src/tools/qcleanuphandler.h @@ -0,0 +1,130 @@ +/**************************************************************************** +** +** ... +** +** Copyright (C) 2001-2008 Trolltech ASA. All rights reserved. +** +** This file is part of the tools module of the TQt 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 TQt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing retquirements 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.TQPL +** included in the packaging of this file. Licensees holding valid TQt +** Commercial licenses may use this file in accordance with the TQt +** 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 TQCLEANUPHANDLER_H +#define TQCLEANUPHANDLER_H + +#ifndef QT_H +#include "qptrlist.h" +#endif // QT_H + +template<class Type> +class TQCleanupHandler +{ +public: + TQCleanupHandler() : cleanupObjects( 0 ) {} + ~TQCleanupHandler() { clear(); } + + Type* add( Type **object ) { + if ( !cleanupObjects ) + cleanupObjects = new TQPtrList<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; + TQPtrListIterator<Type*> it( *cleanupObjects ); + Type **object; + while ( ( object = it.current() ) ) { + delete *object; + *object = 0; + cleanupObjects->remove( object ); + } + delete cleanupObjects; + cleanupObjects = 0; + } + +private: + TQPtrList<Type*> *cleanupObjects; +}; + +template<class Type> +class TQSingleCleanupHandler +{ +public: + TQSingleCleanupHandler() : object( 0 ) {} + ~TQSingleCleanupHandler() { + 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 TQSharedCleanupHandler +{ +public: + TQSharedCleanupHandler() : object( 0 ) {} + ~TQSharedCleanupHandler() { + 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 //TQCLEANUPHANDLER_H |