/** 
 * $LicenseInfo:firstyear=2004&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef RLV_VIEWER2_H
#define RLV_VIEWER2_H

#include "llcallbacklist.h"
#include "llinventoryobserver.h"

#include "boost/function.hpp"

// ============================================================================
// From lloutfitobserver.h

class LLCOFObserver : public LLInventoryObserver, public LLSingleton<LLCOFObserver>
{
	friend class LLSingleton<LLCOFObserver>;
protected:
	LLCOFObserver();
public:
	virtual ~LLCOFObserver();

	virtual void changed(U32 mask);

	typedef boost::signals2::signal<void (void)> signal_t;
	void addCOFChangedCallback(const signal_t::slot_type& cb) { mCOFChanged.connect(cb); }
	void addCOFSavedCallback(const signal_t::slot_type& cb) { mCOFSaved.connect(cb); }

protected:
	bool checkCOF();
	static S32					getCategoryVersion(const LLUUID& cat_id);
	static const std::string&	getCategoryName(const LLUUID& cat_id);
	static LLMD5				hashDirectDescendentNames(const LLUUID& cat_id);

private:
	signal_t	mCOFChanged;
	signal_t	mCOFSaved;
	S32			mCOFLastVersion;
	LLMD5		mItemNameHash;
};


#endif // RLV_VIEWER2_H