1 files changed, 147 insertions, 0 deletions
diff --git a/unotools/source/misc/closeveto.cxx b/unotools/source/misc/closeveto.cxx
new file mode 100644
index 000000000..bf2cb8382
--- /dev/null
+++ b/unotools/source/misc/closeveto.cxx
@@ -0,0 +1,147 @@
+/* -*- 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 <unotools/closeveto.hxx>
+
+#include <com/sun/star/util/CloseVetoException.hpp>
+#include <com/sun/star/util/XCloseable.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <rtl/ref.hxx>
+#include <tools/diagnose_ex.h>
+
+namespace utl
+{
+
+    using ::com::sun::star::uno::Reference;
+    using ::com::sun::star::uno::XInterface;
+    using ::com::sun::star::uno::UNO_QUERY;
+    using ::com::sun::star::uno::Exception;
+    using ::com::sun::star::util::XCloseable;
+    using ::com::sun::star::util::XCloseListener;
+    using ::com::sun::star::util::CloseVetoException;
+    using ::com::sun::star::lang::EventObject;
+
+    //= CloseListener_Impl
+
+    typedef ::cppu::WeakImplHelper <   XCloseListener
+                                    >   CloseListener_Base;
+
+    namespace {
+
+    class CloseListener_Impl : public CloseListener_Base
+    {
+    public:
+        explicit CloseListener_Impl(bool const bHasOwnership)
+            : m_bHasOwnership(bHasOwnership)
+        {
+        }
+
+        // XCloseListener
+        virtual void SAL_CALL queryClosing( const EventObject& Source, sal_Bool GetsOwnership ) override;
+        virtual void SAL_CALL notifyClosing( const EventObject& Source ) override;
+
+        // XEventListener
+        virtual void SAL_CALL disposing( const EventObject& Source) override;
+
+        bool hasOwnership() const { return m_bHasOwnership; }
+
+    protected:
+        virtual ~CloseListener_Impl() override
+        {
+        }
+
+    private:
+        bool    m_bHasOwnership;
+    };
+
+    }
+
+    void SAL_CALL CloseListener_Impl::queryClosing( const EventObject&, sal_Bool i_deliverOwnership )
+    {
+        if ( !m_bHasOwnership )
+            m_bHasOwnership = i_deliverOwnership;
+
+        throw CloseVetoException();
+    }
+
+    void SAL_CALL CloseListener_Impl::notifyClosing( const EventObject& ) {}
+
+    void SAL_CALL CloseListener_Impl::disposing( const EventObject& ) {}
+
+    //= CloseVeto_Data
+
+    struct CloseVeto_Data
+    {
+        Reference< XCloseable >                 xCloseable;
+        ::rtl::Reference< CloseListener_Impl >  pListener;
+    };
+
+    //= operations
+
+    namespace
+    {
+
+        void lcl_init( CloseVeto_Data& i_data, const Reference< XInterface >& i_closeable,
+                bool const hasOwnership)
+        {
+            i_data.xCloseable.set( i_closeable, UNO_QUERY );
+            ENSURE_OR_RETURN_VOID( i_data.xCloseable.is(), "CloseVeto: the component is not closeable!" );
+
+            i_data.pListener = new CloseListener_Impl(hasOwnership);
+            i_data.xCloseable->addCloseListener( i_data.pListener.get() );
+        }
+
+        void lcl_deinit( CloseVeto_Data const & i_data )
+        {
+            if ( !i_data.xCloseable.is() )
+                return;
+
+            i_data.xCloseable->removeCloseListener( i_data.pListener.get() );
+            if ( i_data.pListener->hasOwnership() )
+            {
+                try
+                {
+                    i_data.xCloseable->close( true );
+                }
+                catch( const CloseVetoException& ) { }
+                catch( const Exception& )
+                {
+                    DBG_UNHANDLED_EXCEPTION("unotools");
+                }
+            }
+        }
+    }
+
+    //= CloseVeto
+    CloseVeto::CloseVeto(const Reference< XInterface >& i_closeable,
+            bool const hasOwnership)
+        : m_xData(new CloseVeto_Data)
+    {
+        lcl_init(*m_xData, i_closeable, hasOwnership);
+    }
+
+    CloseVeto::~CloseVeto()
+    {
+        lcl_deinit(*m_xData);
+    }
+
+} // namespace utl
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */