#ifndef XLINKITEM_H

#define XLINKITEM_H

class BranchItem;

class XLinkObj;

class QGraphicsScene;

#include "mapitem.h"

/*! \brief xlinks are used to draw arbitrary connections between branches (BranchObj) in the map. */

/////////////////////////////////////////////////////////////////////////////

class XLinkItem:public MapItem {

public:

	enum XLinkState {undefinedXLink,initXLink,activeXLink,deleteXLink};	

	XLinkItem (const QList<QVariant> &data, TreeItem *parent=NULL);

    virtual ~XLinkItem ();

    virtual void init ();

	void setBegin (BranchItem*);

	BranchItem* getBegin();

	void setEnd   (BranchItem*);

	void setEnd   (QPointF);

	BranchItem* getEnd();

	void setColor(QColor);

	QColor getColor();

	void setWidth (int);

	int getWidth ();

	bool activate ();			//! Creates a 2nd XLink (without a XLinkObj attached) 

	bool isBegin();		//! true, if this is master xLink, which may have an XLinkObj attached

	void updateXLink();

	virtual void updateVisibility();	// FIXME-3 not really needed atm...

	BranchItem* getPartnerBranch ();

	BranchItem* getOtherBranch (TreeItem *ti);

	XLinkItem *getPartnerXLink();	//! Partner XLink

	QString saveToDir ();

	virtual XLinkObj* createMapObj(QGraphicsScene *scene);

private:

	XLinkState xLinkState;	// init during drawing or active

	QColor color;

	int width;

	BranchItem *beginBranch;

	BranchItem *endBranch;

	XLinkItem *partnerXLink;

	bool isBeginXLink;

};

#endif