#include <QGraphicsScene>

#include "xlinkitem.h"

#include "branchitem.h"

#include "linkablemapobj.h"

#include "vymmodel.h"

#include "xlinkobj.h"

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

// XLinkItem

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

XLinkItem::XLinkItem (const QList<QVariant> &data, TreeItem *parent):MapItem (data,parent)

{

	//qDebug() << "Const XLinkItem () "<<this;

	init();

}

XLinkItem::~XLinkItem ()

{

	//qDebug() << "Destr XLinkItem begin "<<this<<"  pI="<<parentItem<<"  link="<<link;

	if (link)

	{

		// tell the model to remove the link later

		// (and then remove partner link in VymModel::cleanupLinks)

		model->deleteLink (link);

		link->removeXLinkItem (this);

		link->deactivate();

	}	

	//qDebug() << "Destr XLinkItem end"<<this;

}

void XLinkItem::init () 

{

	setType (XLink);

	link=NULL;

}

void XLinkItem::setLink (Link *l)

{

	link=l;

}

Link* XLinkItem::getLink ()

{

	return link;

}

void XLinkItem::updateXLink()

{

	qDebug()<<"XLI::updateXLink";

	if (link)

		link->updateLink();

}

BranchItem* XLinkItem::getPartnerBranch()

{

	if (link && link->getBeginBranch() && link->getEndBranch())

	{

		if (parentItem==link->getBeginBranch())

			return link->getEndBranch();

		else	

			return link->getBeginBranch();

	}

	return NULL;

}