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diff --git a/comphelper/inc/comphelper/weakbag.hxx b/comphelper/inc/comphelper/weakbag.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef INCLUDED_COMPHELPER_WEAKBAG_HXX
+#define INCLUDED_COMPHELPER_WEAKBAG_HXX
+
+#include "sal/config.h"
+
+#include <list>
+#include "com/sun/star/uno/Reference.hxx"
+#include "cppuhelper/weakref.hxx"
+#include "osl/diagnose.h"
+
+namespace comphelper {
+
+/**
+   A bag of UNO weak references.
+*/
+template< typename T > class WeakBag {
+public:
+    /**
+       Add a new weak reference.
+
+       The implementation keeps the amount of memory consumed linear in the
+       number of living references added, not linear in the number of total
+       references added.
+
+       @param e
+       a non-null reference.
+    */
+    void add(com::sun::star::uno::Reference< T > const & e) {
+        OSL_ASSERT(e.is());
+        for (typename List::iterator i(m_list.begin()); i != m_list.end();) {
+            if (com::sun::star::uno::Reference< T >(*i).is()) {
+                ++i;
+            } else {
+                i = m_list.erase(i);
+            }
+        }
+        m_list.push_back(com::sun::star::uno::WeakReference< T >(e));
+    }
+
+    /**
+       Remove a living reference.
+
+       @return
+       a living reference, or null if there are none.
+    */
+    com::sun::star::uno::Reference< T > remove() {
+        while (!m_list.empty()) {
+            com::sun::star::uno::Reference< T > r(m_list.front());
+            m_list.pop_front();
+            if (r.is()) {
+                return r;
+            }
+        }
+        return com::sun::star::uno::Reference< T >();
+    }
+
+private:
+    typedef std::list< com::sun::star::uno::WeakReference< T > > List;
+
+    List m_list;
+};
+
+}
+
+#endif