1 files changed, 144 insertions, 0 deletions
diff --git a/include/tools/link.hxx b/include/tools/link.hxx
new file mode 100644
index 000000000000..c325b67bae76
--- /dev/null
+++ b/include/tools/link.hxx
@@ -0,0 +1,144 @@
+/* -*- 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 .
+ */
+#ifndef _LINK_HXX
+#define _LINK_HXX
+
+#include "tools/toolsdllapi.h"
+#include "sal/config.h"
+#include "sal/types.h"
+#include <tools/solar.h>
+
+typedef long (*PSTUB)( void*, void* );
+
+#define DECL_LINK( Method, ArgType ) \
+    long Method( ArgType ); \
+    static long LinkStub##Method( void* pThis, void* )
+
+#define DECL_STATIC_LINK( Class, Method, ArgType ) \
+    static long Method( Class*, ArgType )
+
+#define DECL_DLLPRIVATE_LINK(Method, ArgType) \
+    SAL_DLLPRIVATE long Method(ArgType); \
+    SAL_DLLPRIVATE static long LinkStub##Method(void * pThis, void *)
+
+#define DECL_DLLPRIVATE_STATIC_LINK(Class, Method, ArgType) \
+    SAL_DLLPRIVATE static long Method(Class *, ArgType)
+
+#define IMPL_STUB(Class, Method, ArgType) \
+    long Class::LinkStub##Method( void* pThis, void* pCaller) \
+    { \
+        return ((Class*)pThis )->Method( (ArgType)pCaller ); \
+    }
+
+#define IMPL_STATIC_LINK( Class, Method, ArgType, ArgName ) \
+    long Class::Method( Class* pThis, ArgType ArgName )
+
+#define IMPL_STATIC_LINK_NOINSTANCE( Class, Method, ArgType, ArgName ) \
+    long Class::Method( SAL_UNUSED_PARAMETER Class*, ArgType ArgName )
+
+#define LINK( Inst, Class, Member ) \
+    Link( (Class*)Inst, (PSTUB)&Class::LinkStub##Member )
+
+#define STATIC_LINK( Inst, Class, Member ) \
+    Link( (Class*)Inst, (PSTUB)&Class::Member )
+
+#define IMPL_LINK( Class, Method, ArgType, ArgName ) \
+    IMPL_STUB( Class, Method, ArgType ) \
+    long Class::Method( ArgType ArgName )
+
+#define IMPL_LINK_NOARG( Class, Method ) \
+    IMPL_STUB( Class, Method, void* ) \
+    long Class::Method( SAL_UNUSED_PARAMETER void* )
+
+#define IMPL_LINK_INLINE_START( Class, Method, ArgType, ArgName ) \
+    inline long Class::Method( ArgType ArgName )
+
+#define IMPL_LINK_INLINE_END( Class, Method, ArgType, ArgName ) \
+    IMPL_STUB( Class, Method, ArgType )
+
+#define IMPL_LINK_NOARG_INLINE_START( Class, Method ) \
+    inline long Class::Method( SAL_UNUSED_PARAMETER void* )
+
+#define IMPL_LINK_NOARG_INLINE_END( Class, Method ) \
+    IMPL_STUB( Class, Method, void* )
+
+#define IMPL_LINK_INLINE( Class, Method, ArgType, ArgName, Body ) \
+    long Class::Method( ArgType ArgName ) \
+    Body \
+    IMPL_STUB( Class, Method, ArgType )
+
+#define EMPTYARG
+
+class TOOLS_DLLPUBLIC Link
+{
+    void*       pInst;
+    PSTUB       pFunc;
+
+public:
+                Link();
+                Link( void* pLinkHdl, PSTUB pMemFunc );
+
+    long        Call( void* pCaller ) const;
+
+    sal_Bool        IsSet() const;
+    sal_Bool        operator !() const;
+
+    sal_Bool        operator==( const Link& rLink ) const;
+    sal_Bool        operator!=( const Link& rLink ) const
+                    { return !(Link::operator==( rLink )); }
+    sal_Bool        operator<( const Link& rLink ) const
+                    { return ((sal_uIntPtr)rLink.pFunc < (sal_uIntPtr)pFunc); }
+};
+
+inline Link::Link()
+{
+    pInst = 0;
+    pFunc = 0;
+}
+
+inline Link::Link( void* pLinkHdl, PSTUB pMemFunc )
+{
+    pInst = pLinkHdl;
+    pFunc = pMemFunc;
+}
+
+inline long Link::Call(void *pCaller) const
+{
+    return pFunc ? (*pFunc)(pInst, pCaller) : 0;
+}
+
+inline sal_Bool Link::IsSet() const
+{
+    if ( pFunc )
+        return sal_True;
+    else
+        return sal_False;
+}
+
+inline sal_Bool Link::operator !() const
+{
+    if ( !pFunc )
+        return sal_True;
+    else
+        return sal_False;
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */