1 files changed, 127 insertions, 0 deletions
diff --git a/visiscript/files/qcleanuphandler.h b/visiscript/files/qcleanuphandler.h
index e69de29bb2..037f911064 100644
--- a/visiscript/files/qcleanuphandler.h
+++ b/visiscript/files/qcleanuphandler.h
@@ -0,0 +1,127 @@
+/****************************************************************************
+** $Id$
+**
+** ...
+**
+** Copyright (C) 2001-2002 Trolltech AS.  All rights reserved.
+**
+** This file is part of the tools module of the Qt GUI Toolkit.
+**
+** This file may be distributed under the terms of the Q Public License
+** as defined by Trolltech AS of Norway and appearing in the file
+** LICENSE.QPL included in the packaging of this file.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
+** 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
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
+**   information about Qt Commercial License Agreements.
+** See http://www.trolltech.com/qpl/ for QPL licensing information.
+** See http://www.trolltech.com/gpl/ for GPL licensing information.
+**
+** Contact info@trolltech.com if any conditions of this licensing are
+** not clear to you.
+**
+**********************************************************************/
+
+#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