1 files changed, 54 insertions, 0 deletions
diff --git a/xmloff/source/style/SinglePropertySetInfoCache.cxx b/xmloff/source/style/SinglePropertySetInfoCache.cxx
new file mode 100644
index 0000000000..be81c02c8e
--- /dev/null
+++ b/xmloff/source/style/SinglePropertySetInfoCache.cxx
@@ -0,0 +1,54 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <cppuhelper/weakref.hxx>
+#include <xmloff/SinglePropertySetInfoCache.hxx>
+#include <com/sun/star/beans/XPropertySet.hpp>
+
+using namespace ::com::sun::star::uno;
+using ::com::sun::star::beans::XPropertySet;
+using ::com::sun::star::beans::XPropertySetInfo;
+
+bool SinglePropertySetInfoCache::hasProperty(
+        const Reference< XPropertySet >& rPropSet,
+        Reference< XPropertySetInfo >& rPropSetInfo )
+{
+    if( !rPropSetInfo.is() )
+        rPropSetInfo = rPropSet->getPropertySetInfo();
+    Map::iterator aIter = m_Map.find( rPropSetInfo );
+    if( aIter != m_Map.end() )
+    {
+        return (*aIter).second;
+    }
+    bool bRet = rPropSetInfo->hasPropertyByName( m_sName );
+    // Check whether the property set info is destroyed if it is assigned to a
+    // weak reference only; if it is destroyed, then every instance of
+    // getPropertySetInfo returns a new object; Such property set infos must not
+    // be cached:
+    WeakReference < XPropertySetInfo > xWeakInfo( rPropSetInfo );
+    rPropSetInfo = nullptr;
+    rPropSetInfo = xWeakInfo;
+    if( rPropSetInfo.is() )
+    {
+        m_Map.emplace(rPropSetInfo, bRet);
+    }
+    return bRet;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */