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diff --git a/linden/indra/llui/llslider.h b/linden/indra/llui/llslider.h
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+++ b/linden/indra/llui/llslider.h
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+/** 
+ * @file llslider.h
+ * @brief A simple slider with no label.
+ *
+ * Copyright (c) 2002-2007, Linden Research, Inc.
+ * 
+ * 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://secondlife.com/developers/opensource/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://secondlife.com/developers/opensource/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.
+ */
+
+#ifndef LL_LLSLIDER_H
+#define LL_LLSLIDER_H
+
+#include "lluictrl.h"
+#include "v4color.h"
+
+class LLUICtrlFactory;
+
+class LLSlider : public LLUICtrl
+{
+public:
+        LLSlider( 
+                const LLString& name,
+                const LLRect& rect,
+                void (*on_commit_callback)(LLUICtrl* ctrl, void* userdata),
+                void* callback_userdata,
+                F32 initial_value,
+                F32 min_value,
+                F32 max_value,
+                F32 increment,
+                const LLString& control_name = LLString::null );
+
+        virtual EWidgetType getWidgetType() const;
+        virtual LLString getWidgetTag() const;
+        virtual LLXMLNodePtr getXML(bool save_children = true) const;
+        static  LLView* fromXML(LLXMLNodePtr node, LLView *parent, LLUICtrlFactory *factory);
+
+        void                    setValue( F32 value, BOOL from_event = FALSE );
+        F32                             getValueF32() const;
+
+        virtual void    setValue(const LLSD& value )    { setValue((F32)value.asReal(), TRUE); }
+        virtual LLSD    getValue() const                { return LLSD(getValueF32()); }
+
+        virtual void    setMinValue(LLSD min_value)     { setMinValue((F32)min_value.asReal()); }
+        virtual void    setMaxValue(LLSD max_value)     { setMaxValue((F32)max_value.asReal());  }
+
+        F32                             getInitialValue() const { return mInitialValue; }
+        F32                             getMinValue() const             { return mMinValue; }
+        F32                             getMaxValue() const             { return mMaxValue; }
+        F32                             getIncrement() const    { return mIncrement; }
+        void                    setMinValue(F32 min_value) {mMinValue = min_value;}
+        void                    setMaxValue(F32 max_value) {mMaxValue = max_value;}
+        void                    setIncrement(F32 increment) {mIncrement = increment;}
+        void                    setMouseDownCallback( void (*cb)(LLUICtrl* ctrl, void* userdata) ) { mMouseDownCallback = cb; }
+        void                    setMouseUpCallback(     void (*cb)(LLUICtrl* ctrl, void* userdata) ) { mMouseUpCallback = cb; }
+
+        virtual BOOL    handleHover(S32 x, S32 y, MASK mask);
+        virtual BOOL    handleMouseUp(S32 x, S32 y, MASK mask);
+        virtual BOOL    handleMouseDown(S32 x, S32 y, MASK mask);
+        virtual BOOL    handleKeyHere(KEY key, MASK mask, BOOL called_from_parent);
+        virtual void    draw();
+
+protected:
+        F32                             mValue;
+        F32                             mInitialValue;
+        F32                             mMinValue;
+        F32                             mMaxValue;
+        F32                             mIncrement;
+
+        S32                             mMouseOffset;
+        LLRect                  mDragStartThumbRect;
+
+        LLRect                  mThumbRect;
+        LLColor4                mTrackColor;
+        LLColor4                mThumbOutlineColor;
+        LLColor4                mThumbCenterColor;
+        LLColor4                mDisabledThumbColor;
+        
+        void                    (*mMouseDownCallback)(LLUICtrl* ctrl, void* userdata);
+        void                    (*mMouseUpCallback)(LLUICtrl* ctrl, void* userdata);
+};
+
+#endif  // LL_LLSLIDER_H