/** 
 * @file llscrollingpanelparam.h
 * @brief the scrolling panel containing a list of visual param 
 *  	  panels
 *
 * $LicenseInfo:firstyear=2009&license=viewergpl$
 * 
 * Copyright (c) 2009-2009, 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_SCROLLINGPANELPARAM_H
#define LL_SCROLLINGPANELPARAM_H

#include "llpanel.h"
#include "llscrollingpanellist.h"

class LLViewerJointMesh;
class LLViewerVisualParam;
class LLWearable;
class LLVisualParamHint;
class LLViewerVisualParam;

class LLScrollingPanelParam : public LLScrollingPanel
{
public:
	LLScrollingPanelParam( const LLPanel::Params& panel_params,
						   LLViewerJointMesh* mesh, LLViewerVisualParam* param, BOOL allow_modify, LLWearable* wearable );
	virtual ~LLScrollingPanelParam();

	virtual void		draw();
	virtual void		setVisible( BOOL visible );
	virtual void		updatePanel(BOOL allow_modify);

	static void			onSliderMouseDown(LLUICtrl* ctrl, void* userdata);
	static void			onSliderMoved(LLUICtrl* ctrl, void* userdata);
	static void			onSliderMouseUp(LLUICtrl* ctrl, void* userdata);

	static void			onHintMinMouseDown(void* userdata);
	static void			onHintMinHeldDown(void* userdata);
	static void			onHintMaxMouseDown(void* userdata);
	static void			onHintMaxHeldDown(void* userdata);
	static void			onHintMinMouseUp(void* userdata);
	static void			onHintMaxMouseUp(void* userdata);

	void				onHintMouseDown( LLVisualParamHint* hint );
	void				onHintHeldDown( LLVisualParamHint* hint );

	F32					weightToPercent( F32 weight );
	F32					percentToWeight( F32 percent );

public:
	// Constants for LLPanelVisualParam
	const static F32 PARAM_STEP_TIME_THRESHOLD;
	
	const static S32 BTN_BORDER;
	const static S32 PARAM_HINT_WIDTH;
	const static S32 PARAM_HINT_HEIGHT;
	const static S32 PARAM_HINT_LABEL_HEIGHT;
	const static S32 PARAM_PANEL_WIDTH;
	const static S32 PARAM_PANEL_HEIGHT; 


public:
	LLViewerVisualParam* mParam;
	LLPointer<LLVisualParamHint>	mHintMin;
	LLPointer<LLVisualParamHint>	mHintMax;
	static S32 			sUpdateDelayFrames;
	
protected:
	LLTimer				mMouseDownTimer;	// timer for how long mouse has been held down on a hint.
	F32					mLastHeldTime;

	BOOL mAllowModify;
	LLWearable *mWearable;
}; 

#endif