1 files changed, 122 insertions, 0 deletions
diff --git a/include/uno/current_context.hxx b/include/uno/current_context.hxx
new file mode 100644
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+++ b/include/uno/current_context.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 .
+ */
+
+/*
+ * This file is part of LibreOffice published API.
+ */
+#ifndef INCLUDED_UNO_CURRENT_CONTEXT_HXX
+#define INCLUDED_UNO_CURRENT_CONTEXT_HXX
+
+#include "sal/config.h"
+
+#include <cstddef>
+
+#include "uno/current_context.h"
+#include "uno/lbnames.h"
+
+#include "com/sun/star/uno/XCurrentContext.hpp"
+
+
+namespace com
+{
+namespace sun
+{
+namespace star
+{
+namespace uno
+{
+
+/** Getting the current context.
+    @attention
+    Don't spread the returned interface around to other threads.  Every thread has its own
+    current context.
+
+    @return current context or null ref, if none is set
+*/
+inline Reference< XCurrentContext > SAL_CALL getCurrentContext()
+{
+    Reference< XCurrentContext > xRet;
+    ::rtl::OUString aEnvTypeName( CPPU_CURRENT_LANGUAGE_BINDING_NAME );
+    ::uno_getCurrentContext( reinterpret_cast<void **>(&xRet), aEnvTypeName.pData, NULL );
+    return xRet;
+}
+/** Setting the current context.
+
+    @param xContext current context to be set
+    @return true, if context has been successfully set
+*/
+inline bool SAL_CALL setCurrentContext(
+    Reference< XCurrentContext > const & xContext )
+{
+    ::rtl::OUString aEnvTypeName( CPPU_CURRENT_LANGUAGE_BINDING_NAME );
+    return ::uno_setCurrentContext( xContext.get(), aEnvTypeName.pData, NULL );
+}
+
+/** Objects of this class are used for applying a current context until they are destructed, i.e.
+    the ctor of this class saves the previous and sets the given context while the dtor restores
+    the previous one upon destruction.
+*/
+class ContextLayer
+{
+    /** this C++ environment type name.
+    */
+    ::rtl::OUString m_aEnvTypeName;
+    /** previous context
+    */
+    Reference< XCurrentContext > m_xPreviousContext;
+
+public:
+    /** Constructor: Saves the previous context and sets the new (given) one.
+
+        @param xNewContext new context to be set
+    */
+    inline ContextLayer(
+        Reference< XCurrentContext > const & xNewContext = Reference< XCurrentContext >() );
+    /** Destructor: restores the previous context.
+    */
+    inline ~ContextLayer();
+
+    /** Gets the previously set context.
+
+        @return the previously set context
+    */
+    Reference< XCurrentContext > SAL_CALL getPreviousContext() const
+        { return m_xPreviousContext; }
+};
+
+inline ContextLayer::ContextLayer( Reference< XCurrentContext > const & xNewContext )
+    : m_aEnvTypeName( CPPU_CURRENT_LANGUAGE_BINDING_NAME )
+{
+    ::uno_getCurrentContext( reinterpret_cast<void **>(&m_xPreviousContext), m_aEnvTypeName.pData, NULL );
+    ::uno_setCurrentContext( xNewContext.get(), m_aEnvTypeName.pData, NULL );
+}
+
+inline ContextLayer::~ContextLayer()
+{
+    ::uno_setCurrentContext( m_xPreviousContext.get(), m_aEnvTypeName.pData, NULL );
+}
+
+}
+}
+}
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */