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diff --git a/vcl/source/helper/displayconnectiondispatch.cxx b/vcl/source/helper/displayconnectiondispatch.cxx
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+/* -*- 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 <vcl/svapp.hxx>
+#include <tools/debug.hxx>
+
+#include <displayconnectiondispatch.hxx>
+#include <svdata.hxx>
+#include <salinst.hxx>
+
+using namespace osl;
+using namespace vcl;
+using namespace com::sun::star::uno;
+using namespace com::sun::star::awt;
+
+DisplayConnectionDispatch::DisplayConnectionDispatch()
+{
+ m_ConnectionIdentifier = ImplGetSVData()->mpDefInst->GetConnectionIdentifier();
+}
+
+DisplayConnectionDispatch::~DisplayConnectionDispatch()
+{}
+
+void DisplayConnectionDispatch::start()
+{
+ DBG_TESTSOLARMUTEX();
+ ImplSVData* pSVData = ImplGetSVData();
+ pSVData->mpDefInst->SetEventCallback( this );
+}
+
+void DisplayConnectionDispatch::terminate()
+{
+ DBG_TESTSOLARMUTEX();
+ ImplSVData* pSVData = ImplGetSVData();
+
+ if( pSVData )
+ {
+ pSVData->mpDefInst->SetEventCallback( nullptr );
+ }
+
+ SolarMutexReleaser aRel;
+
+ std::scoped_lock aGuard( m_aMutex );
+ Any aEvent;
+ std::vector< css::uno::Reference< XEventHandler > > aLocalList( m_aHandlers );
+ for (auto const& elem : aLocalList)
+ elem->handleEvent( aEvent );
+}
+
+void SAL_CALL DisplayConnectionDispatch::addEventHandler( const Any& /*window*/, const css::uno::Reference< XEventHandler >& handler, sal_Int32 /*eventMask*/ )
+{
+ std::scoped_lock aGuard( m_aMutex );
+
+ m_aHandlers.push_back( handler );
+}
+
+void SAL_CALL DisplayConnectionDispatch::removeEventHandler( const Any& /*window*/, const css::uno::Reference< XEventHandler >& handler )
+{
+ std::scoped_lock aGuard( m_aMutex );
+
+ std::erase(m_aHandlers, handler);
+}
+
+void SAL_CALL DisplayConnectionDispatch::addErrorHandler( const css::uno::Reference< XEventHandler >& )
+{
+}
+
+void SAL_CALL DisplayConnectionDispatch::removeErrorHandler( const css::uno::Reference< XEventHandler >& )
+{
+}
+
+Any SAL_CALL DisplayConnectionDispatch::getIdentifier()
+{
+ return Any(m_ConnectionIdentifier);
+}
+
+bool DisplayConnectionDispatch::dispatchEvent( void const * pData, int nBytes )
+{
+ SolarMutexReleaser aRel;
+
+ Sequence< sal_Int8 > aSeq( static_cast<const sal_Int8*>(pData), nBytes );
+ Any aEvent;
+ aEvent <<= aSeq;
+ ::std::vector< css::uno::Reference< XEventHandler > > handlers;
+ {
+ std::scoped_lock aGuard( m_aMutex );
+ handlers = m_aHandlers;
+ }
+ for (auto const& handle : handlers)
+ if( handle->handleEvent( aEvent ) )
+ return true;
+ return false;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */