restore m_aModelChangeListener

which disappeared, apparently by accident with...

commit 56e1133f724896aec3f5b5c409fb5917a3b13eb4
Date:   Sun Dec 8 19:33:42 2013 -0200

    Convert chart 3D scene illumination to .ui

and then a bunch of cleanups removed the unused code

Change-Id: I53fe4f6878dda4f7b8d76a04213b5c6d1366a165
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/101917
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>

1 files changed, 114 insertions, 0 deletions

diff --git a/chart2/source/tools/ModifyListenerCallBack.cxx b/chart2/source/tools/ModifyListenerCallBack.cxx
new file mode 100644
index 000000000000..55d681061f8d
--- /dev/null
+++ b/chart2/source/tools/ModifyListenerCallBack.cxx
@@ -0,0 +1,114 @@
+/* -*- 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 <ModifyListenerCallBack.hxx>
+#include <cppuhelper/compbase.hxx>
+#include <MutexContainer.hxx>
+
+using namespace ::com::sun::star;
+using ::com::sun::star::uno::Reference;
+
+namespace chart {
+
+typedef ::cppu::WeakComponentImplHelper< css::util::XModifyListener >
+    ModifyListenerCallBack_Base;
+
+class ModifyListenerCallBack_impl
+    : public ::chart::MutexContainer
+    , public ModifyListenerCallBack_Base
+{
+public:
+    explicit ModifyListenerCallBack_impl( const Link<void*,void>& rCallBack );
+
+    void startListening( const Reference< util::XModifyBroadcaster >& xBroadcaster );
+    void stopListening();
+
+    //XModifyListener
+    virtual void SAL_CALL modified( const lang::EventObject& aEvent ) override;
+
+    //XEventListener
+    virtual void SAL_CALL disposing( const lang::EventObject& Source ) override;
+
+    using ::cppu::WeakComponentImplHelperBase::disposing;
+
+private:
+    Link<void*,void> m_aLink;//will be called on modify
+    Reference< util::XModifyBroadcaster > m_xBroadcaster;//broadcaster to listen at
+};
+
+ModifyListenerCallBack_impl::ModifyListenerCallBack_impl( const Link<void*,void>& rCallBack )
+                        : ModifyListenerCallBack_Base( m_aMutex )
+                        , m_aLink( rCallBack )
+{
+}
+
+//XModifyListener
+void SAL_CALL ModifyListenerCallBack_impl::modified( const lang::EventObject& /*aEvent*/ )
+{
+    m_aLink.Call(nullptr);
+}
+
+//XEventListener
+void SAL_CALL ModifyListenerCallBack_impl::disposing( const lang::EventObject& /*Source*/ )
+{
+    m_xBroadcaster.clear();
+}
+
+void ModifyListenerCallBack_impl::startListening( const ::com::sun::star::uno::Reference< ::com::sun::star::util::XModifyBroadcaster >& xBroadcaster )
+{
+    if( m_xBroadcaster == xBroadcaster )
+        return;
+
+    stopListening();
+    m_xBroadcaster = xBroadcaster;
+    if( m_xBroadcaster.is() )
+        m_xBroadcaster->addModifyListener( this );
+}
+void ModifyListenerCallBack_impl::stopListening()
+{
+    if( m_xBroadcaster.is() )
+    {
+        m_xBroadcaster->removeModifyListener( this );
+        m_xBroadcaster.clear();
+    }
+}
+
+ModifyListenerCallBack::ModifyListenerCallBack( const Link<void*,void>& rCallBack )
+                        : pModifyListener_impl( new ModifyListenerCallBack_impl(rCallBack) )
+                        , m_xModifyListener( pModifyListener_impl )
+{
+}
+
+ModifyListenerCallBack::~ModifyListenerCallBack()
+{
+    stopListening();
+}
+
+void ModifyListenerCallBack::startListening( const ::com::sun::star::uno::Reference< ::com::sun::star::util::XModifyBroadcaster >& xBroadcaster )
+{
+    pModifyListener_impl->startListening( xBroadcaster );
+}
+void ModifyListenerCallBack::stopListening()
+{
+    pModifyListener_impl->stopListening();
+}
+
+} // namespace chart
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */