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/** 
 * @file llscrollingpanellist.h
 *
 * $LicenseInfo:firstyear=2006&license=viewergpl$
 * 
 * Copyright (c) 2006-2009, 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.
 * $/LicenseInfo$
 */

#include <vector>

#include "llui.h"
#include "lluictrlfactory.h"
#include "llview.h"
#include "llpanel.h"

/*
 * Pure virtual class represents a scrolling panel.
 */
class LLScrollingPanel : public LLPanel
{
public:
	LLScrollingPanel(const std::string& name, const LLRect& rect) : LLPanel(name, rect) { }
	virtual void updatePanel(BOOL allow_modify) = 0;
};


/*
 * A set of panels that are displayed in a vertical sequence inside a scroll container.
 */
class LLScrollingPanelList : public LLUICtrl
{
public:
	LLScrollingPanelList(const std::string& name, const LLRect& rect)
		:	LLUICtrl(name, rect, TRUE, NULL, NULL, FOLLOWS_LEFT | FOLLOWS_BOTTOM ) {}

	virtual void setValue(const LLSD& value) {};

	virtual LLXMLNodePtr getXML(bool save_children) const { return LLUICtrl::getXML(); }
	
	virtual void		draw();

	void				clearPanels();
	void				addPanel( LLScrollingPanel* panel );
	void				updatePanels(BOOL allow_modify);

	static LLView* fromXML(LLXMLNodePtr node, LLView *parent, LLUICtrlFactory *factory);
	
private:
	void				updatePanelVisiblilty();

	std::deque<LLScrollingPanel*> mPanelList;
};