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diff --git a/indra/llui/llsdparam.h b/indra/llui/llsdparam.h
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+/** 
+ * @file llsdparam.h
+ * @brief parameter block abstraction for creating complex objects and 
+ * parsing construction parameters from xml and LLSD
+ *
+ * $LicenseInfo:firstyear=2008&license=viewergpl$
+ * 
+ * Copyright (c) 2008-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLSDPARAM_H
+#define LL_LLSDPARAM_H
+
+#include "llinitparam.h"
+
+class LLParamSDParser 
+:	public LLInitParam::Parser, 
+	public LLSingleton<LLParamSDParser>
+{
+LOG_CLASS(LLParamSDParser);
+
+typedef LLInitParam::Parser parser_t;
+
+protected:
+	LLParamSDParser();
+	friend class LLSingleton<LLParamSDParser>;
+public:
+	void readSD(const LLSD& sd, LLInitParam::BaseBlock& block, bool silent = false);
+	void writeSD(LLSD& sd, const LLInitParam::BaseBlock& block);
+
+	/*virtual*/ std::string getCurrentElementName();
+
+private:
+	void readSDValues(const LLSD& sd, LLInitParam::BaseBlock& block);
+
+	template<typename T>
+	bool readTypedValue(void* val_ptr, boost::function<T(const LLSD&)> parser_func)
+    {
+	    if (!mCurReadSD) return false;
+
+	    *((T*)val_ptr) = parser_func(*mCurReadSD);
+	    return true;
+    }
+
+	template<typename T>
+	bool writeTypedValue(const void* val_ptr, const parser_t::name_stack_t& name_stack)
+	{
+		if (!mWriteSD) return false;
+		
+		LLSD* sd_to_write = getSDWriteNode(name_stack);
+		if (!sd_to_write) return false;
+
+		sd_to_write->assign(*((const T*)val_ptr));
+		return true;
+	}
+
+	LLSD* getSDWriteNode(const parser_t::name_stack_t& name_stack);
+
+	bool readSDParam(void* value_ptr);
+	bool writeU32Param(const void* value_ptr, const parser_t::name_stack_t& name_stack);
+
+	Parser::name_stack_t	mNameStack;
+	const LLSD*				mCurReadSD;
+	LLSD*					mWriteSD;
+};
+
+template<typename T>
+class LLSDParamAdapter : public T
+	{
+	public:
+		LLSDParamAdapter() {}
+		LLSDParamAdapter(const LLSD& sd)
+		{
+			LLParamSDParser::instance().readSD(sd, *this);
+		}
+		
+		LLSDParamAdapter(const T& val)
+		{
+			T::operator=(val);
+		}
+	};
+
+#endif // LL_LLSDPARAM_H
+