#ifndef _CONTENT_HISTORY_H

#define _CONTENT_HISTORY_H

#include "tcommon.h"

#include "tfilepath.h"

#include <qstring></qstring>

#include <qdatetime></qdatetime>

#include <map></map>

#include <set></set>

#undef DVAPI

#undef DVVAR

#ifdef TNZCORE_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

//!this class keeps tracks of modification times on contents, as well as user and machine info;

//!typically used for levels and scene files (or whatever you like...)

// it is used for visualitation purposed only in the infoview, in example

class DVAPI TContentHistory

{

	bool m_isLevel;

	std::map<tframeid, qdatetime=""> m_records;</tframeid,>

	QString m_frozenHistory;

	const QString currentToString() const;

public:

	//!set isLevel=true if you want to keep track of single-frames modifications

	TContentHistory(bool isLevel);

	~TContentHistory();

	TContentHistory *clone() const;

	//! history can come only from a deserialization

	//!WARNING! any preexistent history will be erased by calling this method

	void deserialize(const QString &history);

	//!the returned string is only for visualitation and serialization

	const QString serialize() const;

	//!after calling this method, following history info added will not "merge" with the history until now

	void fixCurrentHistory();

	//!do not call this 2 methods if isLevel==false! (assertion fails)

	void frameModifiedNow(const TFrameId &id) { frameRangeModifiedNow(id, id); }

	void frameRangeModifiedNow(const TFrameId &fromId, const TFrameId &toId);

	//!do not call this method if isLevel==true! (assertion fails)

	void modifiedNow();

};

#endif