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diff --git a/indra/llui/llloadingindicator.h b/indra/llui/llloadingindicator.h
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+/** 
+ * @file llloadingindicator.h
+ * @brief Perpetual loading indicator
+ *
+ * $LicenseInfo:firstyear=2010&license=viewergpl$
+ * 
+ * Copyright (c) 2010, 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_LLLOADINGINDICATOR_H
+#define LL_LLLOADINGINDICATOR_H
+
+#include "lluictrl.h"
+
+///////////////////////////////////////////////////////////////////////////////
+// class LLLoadingIndicator
+///////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Perpetual loading indicator (a la MacOSX or YouTube)
+ * 
+ * Number of rotations per second can be overriden
+ * with the "roations_per_sec" parameter.
+ * 
+ * Can start/stop spinning.
+ * 
+ * @see start()
+ * @see stop()
+ */
+class LLLoadingIndicator
+: public LLUICtrl
+{
+	LOG_CLASS(LLLoadingIndicator);
+public:
+	struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
+	{
+		Optional<F32>	rotations_per_sec;
+		Params()
+		:	rotations_per_sec("rotations_per_sec", 1.0f)
+		{}
+	};
+
+	virtual ~LLLoadingIndicator() {}
+
+	// llview overrides
+	virtual void draw();
+
+	/**
+	 * Stop spinning.
+	 */
+	void stop();
+
+	/**
+	 * Start spinning.
+	 */
+	void start();
+
+private:
+	LLLoadingIndicator(const Params&);
+	friend class LLUICtrlFactory;
+
+	class Data;
+
+	F32						mRotationsPerSec;
+	S8						mCurImageIdx;
+	LLPointer<LLUIImage>	mCurImagep;
+	LLFrameTimer			mImageSwitchTimer;
+};
+
+#endif // LL_LLLOADINGINDICATOR_H