1 files changed, 120 insertions, 0 deletions
diff --git a/chart2/source/inc/EventListenerHelper.hxx b/chart2/source/inc/EventListenerHelper.hxx
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+++ b/chart2/source/inc/EventListenerHelper.hxx
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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 .
+ */
+#pragma once
+
+#include <com/sun/star/lang/XComponent.hpp>
+
+#include <algorithm>
+
+namespace com::sun::star::lang { class XEventListener; }
+
+namespace chart
+{
+namespace EventListenerHelper
+{
+
+namespace impl
+{
+
+template< class InterfaceRef >
+struct addListenerFunctor
+{
+    explicit addListenerFunctor( const css::uno::Reference< css::lang::XEventListener > & xListener ) :
+            m_xListener( xListener )
+    {}
+
+    void operator() ( const InterfaceRef & xObject )
+    {
+        css::uno::Reference< css::lang::XComponent >
+              xBroadcaster( xObject, css::uno::UNO_QUERY );
+        if( xBroadcaster.is() && m_xListener.is())
+            xBroadcaster->addEventListener( m_xListener );
+    }
+private:
+    css::uno::Reference< css::lang::XEventListener > m_xListener;
+};
+
+template< class InterfaceRef >
+struct removeListenerFunctor
+{
+    explicit removeListenerFunctor( const css::uno::Reference<  css::lang::XEventListener > & xListener ) :
+            m_xListener( xListener )
+    {}
+
+    void operator() ( const InterfaceRef & xObject )
+    {
+        css::uno::Reference< css::lang::XComponent >
+              xBroadcaster( xObject, css::uno::UNO_QUERY );
+        if( xBroadcaster.is() && m_xListener.is())
+            xBroadcaster->removeEventListener( m_xListener );
+    }
+private:
+    css::uno::Reference< css::lang::XEventListener > m_xListener;
+};
+
+} //  namespace impl
+
+template< class InterfaceRef >
+void addListener(
+    const InterfaceRef & xObject,
+    const css::uno::Reference< css::lang::XEventListener > & xListener )
+{
+    if( xListener.is())
+    {
+        impl::addListenerFunctor< InterfaceRef > aFunctor( xListener );
+        aFunctor( xObject );
+    }
+}
+
+template< class Container >
+void addListenerToAllElements(
+    const Container & rContainer,
+    const css::uno::Reference< css::lang::XEventListener > & xListener )
+{
+    if( xListener.is())
+        std::for_each( rContainer.begin(), rContainer.end(),
+                         impl::addListenerFunctor< typename Container::value_type >( xListener ));
+}
+
+template< class InterfaceRef >
+void removeListener(
+    const InterfaceRef & xObject,
+    const css::uno::Reference< css::lang::XEventListener > & xListener )
+{
+    if( xListener.is())
+    {
+        impl::removeListenerFunctor< InterfaceRef > aFunctor( xListener );
+        aFunctor( xObject );
+    }
+}
+
+template< class Container >
+void removeListenerFromAllElements(
+    const Container & rContainer,
+    const css::uno::Reference< css::lang::XEventListener > & xListener )
+{
+    if( xListener.is())
+        std::for_each( rContainer.begin(), rContainer.end(),
+                         impl::removeListenerFunctor< typename Container::value_type >( xListener ));
+}
+
+} //  namespace EventListenerHelper
+} //  namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */