INTEGRATION: CWS sb71 (1.1.2); FILE ADDED

2007/09/17 09:42:00 sb 1.1.2.2: #i75466# typo
2007/09/07 13:55:36 sb 1.1.2.1: #i75466#

1 files changed, 109 insertions, 0 deletions

diff --git a/comphelper/inc/comphelper/weakbag.hxx b/comphelper/inc/comphelper/weakbag.hxx
new file mode 100644
index 000000000000..7e0808303530
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+++ b/comphelper/inc/comphelper/weakbag.hxx
@@ -0,0 +1,109 @@
+/*************************************************************************
+ *
+ *  OpenOffice.org - a multi-platform office productivity suite
+ *
+ *  $RCSfile: weakbag.hxx,v $
+ *
+ *  $Revision: 1.2 $
+ *
+ *  last change: $Author: vg $ $Date: 2007-10-15 13:18:09 $
+ *
+ *  The Contents of this file are made available subject to
+ *  the terms of GNU Lesser General Public License Version 2.1.
+ *
+ *
+ *    GNU Lesser General Public License Version 2.1
+ *    =============================================
+ *    Copyright 2007 by Sun Microsystems, Inc.
+ *    901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ *    This library is free software; you can redistribute it and/or
+ *    modify it under the terms of the GNU Lesser General Public
+ *    License version 2.1, as published by the Free Software Foundation.
+ *
+ *    This library 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 for more details.
+ *
+ *    You should have received a copy of the GNU Lesser General Public
+ *    License along with this library; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ *    MA  02111-1307  USA
+ *
+ ************************************************************************/
+
+#ifndef INCLUDED_COMPHELPER_WEAKBAG_HXX
+#define INCLUDED_COMPHELPER_WEAKBAG_HXX
+
+#ifndef _SAL_CONFIG_H_
+#include "sal/config.h"
+#endif
+
+#include <list>
+
+#ifndef _COM_SUN_STAR_UNO_REFERENCE_HXX_
+#include "com/sun/star/uno/Reference.hxx"
+#endif
+#ifndef _CPPUHELPER_WEAKREF_HXX_
+#include "cppuhelper/weakref.hxx"
+#endif
+#ifndef _OSL_DIAGNOSE_H_
+#include "osl/diagnose.h"
+#endif
+
+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