1 files changed, 159 insertions, 0 deletions
diff --git a/comphelper/source/container/containermultiplexer.cxx b/comphelper/source/container/containermultiplexer.cxx
new file mode 100644
index 0000000000..c687e72793
--- /dev/null
+++ b/comphelper/source/container/containermultiplexer.cxx
@@ -0,0 +1,159 @@
+/* -*- 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 <comphelper/containermultiplexer.hxx>
+#include <com/sun/star/container/XContainer.hpp>
+#include <osl/diagnose.h>
+
+namespace comphelper
+{
+
+
+    using namespace ::com::sun::star::uno;
+    using namespace ::com::sun::star::lang;
+    using namespace ::com::sun::star::container;
+
+    OContainerListener::OContainerListener(::osl::Mutex& _rMutex)
+        :m_rMutex(_rMutex)
+    {
+    }
+
+
+    OContainerListener::~OContainerListener()
+    {
+        if (m_xAdapter.is())
+        {
+            m_xAdapter->dispose();
+        }
+    }
+
+
+    void OContainerListener::_elementInserted( const ContainerEvent& /*_rEvent*/ )
+    {
+    }
+
+
+    void OContainerListener::_elementRemoved( const ContainerEvent& )
+    {
+    }
+
+
+    void OContainerListener::_elementReplaced( const ContainerEvent& /*_rEvent*/ )
+    {
+    }
+
+
+    void OContainerListener::_disposing(const EventObject& )
+    {
+    }
+
+
+    void OContainerListener::setAdapter(OContainerListenerAdapter* pAdapter)
+    {
+        ::osl::MutexGuard aGuard(m_rMutex);
+        m_xAdapter = pAdapter;
+    }
+
+    OContainerListenerAdapter::OContainerListenerAdapter(OContainerListener* _pListener,
+            const  Reference< XContainer >& _rxContainer)
+        :m_xContainer(_rxContainer)
+        ,m_pListener(_pListener)
+    {
+        if (m_pListener)
+            m_pListener->setAdapter(this);
+
+        osl_atomic_increment(&m_refCount);
+        try
+        {
+            m_xContainer->addContainerListener(this);
+        }
+        catch(const Exception&)
+        {
+            OSL_FAIL("Exception caught!");
+        }
+        osl_atomic_decrement(&m_refCount);
+    }
+
+
+    OContainerListenerAdapter::~OContainerListenerAdapter()
+    {
+    }
+
+
+    void OContainerListenerAdapter::dispose()
+    {
+        if (!m_xContainer.is())
+            return;
+
+        try
+        {
+            Reference< XContainerListener > xPreventDelete(this);
+            m_xContainer->removeContainerListener(xPreventDelete);
+            m_pListener->setAdapter(nullptr);
+        }
+        catch(const Exception&)
+        {
+            OSL_FAIL("Exception caught!");
+        }
+        m_xContainer = nullptr;
+        m_pListener = nullptr;
+    }
+
+
+    void SAL_CALL OContainerListenerAdapter::disposing( const  EventObject& _rSource)
+    {
+        if (m_pListener)
+        {
+             // tell the listener
+            m_pListener->_disposing(_rSource);
+            // disconnect the listener
+            if ( m_pListener )
+                m_pListener->setAdapter(nullptr);
+        }
+
+        m_xContainer = nullptr;
+        m_pListener = nullptr;
+    }
+
+
+    void SAL_CALL OContainerListenerAdapter::elementInserted( const ContainerEvent& _rEvent )
+    {
+        if (m_pListener)
+            m_pListener->_elementInserted(_rEvent);
+    }
+
+
+    void SAL_CALL OContainerListenerAdapter::elementRemoved( const ContainerEvent& _rEvent )
+    {
+        if (m_pListener)
+            m_pListener->_elementRemoved(_rEvent);
+    }
+
+
+    void SAL_CALL OContainerListenerAdapter::elementReplaced( const ContainerEvent& _rEvent )
+    {
+        if (m_pListener)
+            m_pListener->_elementReplaced(_rEvent);
+    }
+
+
+}   // namespace comphelper
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */