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diff --git a/sdext/source/presenter/PresenterFrameworkObserver.cxx b/sdext/source/presenter/PresenterFrameworkObserver.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 "PresenterFrameworkObserver.hxx"
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+
+using namespace ::com::sun::star;
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::drawing::framework;
+
+
+namespace sdext::presenter {
+
+PresenterFrameworkObserver::PresenterFrameworkObserver (
+ const css::uno::Reference<css::drawing::framework::XConfigurationController>&rxController,
+ const Action& rAction)
+ : PresenterFrameworkObserverInterfaceBase(m_aMutex),
+ mxConfigurationController(rxController),
+ maAction(rAction)
+{
+ if ( ! mxConfigurationController.is())
+ throw lang::IllegalArgumentException();
+
+ if (mxConfigurationController->hasPendingRequests())
+ {
+ mxConfigurationController->addConfigurationChangeListener(
+ this,
+ "ConfigurationUpdateEnd",
+ Any());
+ }
+ else
+ {
+ rAction(true);
+ }
+}
+
+PresenterFrameworkObserver::~PresenterFrameworkObserver()
+{
+}
+
+void PresenterFrameworkObserver::RunOnUpdateEnd (
+ const css::uno::Reference<css::drawing::framework::XConfigurationController>&rxController,
+ const Action& rAction)
+{
+ new PresenterFrameworkObserver(
+ rxController,
+ rAction);
+}
+
+void SAL_CALL PresenterFrameworkObserver::disposing()
+{
+ if (maAction)
+ maAction(false);
+ Shutdown();
+}
+
+void PresenterFrameworkObserver::Shutdown()
+{
+ maAction = Action();
+ if (mxConfigurationController != nullptr)
+ {
+ mxConfigurationController->removeConfigurationChangeListener(this);
+ mxConfigurationController = nullptr;
+ }
+}
+
+void SAL_CALL PresenterFrameworkObserver::disposing (const lang::EventObject& rEvent)
+{
+ if ( ! rEvent.Source.is())
+ return;
+
+ if (rEvent.Source == mxConfigurationController)
+ {
+ mxConfigurationController = nullptr;
+ if (maAction)
+ maAction(false);
+ }
+}
+
+void SAL_CALL PresenterFrameworkObserver::notifyConfigurationChange (
+ const ConfigurationChangeEvent& /*rEvent*/)
+{
+ Action aAction(maAction);
+ Shutdown();
+ aAction(true);
+
+ maAction = nullptr;
+ dispose();
+}
+
+} // end of namespace ::sdext::presenter
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */