/**
 * @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.
 * $/LicenseInfo$
 */

#ifndef LL_LLSCROLLINGPANELLIST_H
#define LL_LLSCROLLINGPANELLIST_H

#include <deque>

#include "llpanel.h"

class LLUICtrlFactory;

// 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)
	{
	}

	LL_INLINE void setValue(const LLSD&) override	{}

	void draw() override;

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

	const std::string& getTag() const override;

	LLXMLNodePtr getXML(bool save_children = true) const override;
	static LLView* fromXML(LLXMLNodePtr node, LLView* parent,
						   LLUICtrlFactory* factory);

private:
	void updatePanelVisiblilty();

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

#endif //LL_LLSCROLLINGPANELLIST_H