diff -r d922fb6ea482 -r 6b0a5f4923d3 xlinkitem.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xlinkitem.cpp	Thu Sep 17 09:41:09 2009 +0000
@@ -0,0 +1,210 @@
+#include <QGraphicsScene>
+#include "xlinkitem.h"
+
+#include "branchitem.h"
+#include "linkablemapobj.h"
+#include "vymmodel.h"
+#include "xlinkobj.h"
+
+#include <iostream>
+using namespace std;
+
+/////////////////////////////////////////////////////////////////
+// XLinkItem
+/////////////////////////////////////////////////////////////////
+
+XLinkItem::XLinkItem (const QList<QVariant> &data, TreeItem *parent):MapItem (data,parent)
+
+{
+	//cout << "Const XLinkItem () "<<this<<endl;
+	init();
+}
+
+XLinkItem::~XLinkItem ()
+{
+	cout << "Destr XLinkItem "<<this<<"  lmo="<<lmo<<endl;
+	if (lmo){cout <<" calling delete\n"; delete (lmo);}
+	if (partnerXLink)
+	{
+		// Also delete partner 
+		cout << "  deleting partner="<<partnerXLink<<endl;
+		partnerXLink->partnerXLink=NULL;	// avoid endless recusion
+		model->deleteItem (partnerXLink);
+	}
+}
+
+
+void XLinkItem::init () 
+{
+	setType (XLink);
+	beginBranch=NULL;
+	endBranch=NULL;
+	partnerXLink=NULL;
+	isBeginXLink=true;
+	xLinkState=XLinkItem::undefinedXLink;
+
+	color=QColor (180,180,180);
+	width=1;
+}
+
+void XLinkItem::setBegin (BranchItem *bi)
+{
+	if (bi) 
+	{
+		xLinkState=initXLink;
+		beginBranch=bi;
+	}	
+}
+
+BranchItem* XLinkItem::getBegin ()
+{
+	return beginBranch;
+}
+
+void XLinkItem::setEnd (BranchItem *bi)
+{
+	if (bi) 
+	{
+		xLinkState=initXLink;
+		endBranch=bi;
+	}		
+}
+
+BranchItem* XLinkItem::getEnd()
+{
+	return endBranch;
+}
+
+void XLinkItem::setWidth (int w)
+{
+	if (isBeginXLink)
+	{
+		width=w;
+		if (lmo) ((XLinkObj*)lmo)->updateXLink();
+		return;
+	}
+	if (partnerXLink)
+		partnerXLink->setWidth (w);
+}
+
+int XLinkItem::getWidth()
+{
+	if (isBeginXLink) return width;
+	if (partnerXLink)
+		return partnerXLink->getWidth();
+	else
+		return -1;
+}
+
+void XLinkItem::setColor(QColor c)
+{
+	if (isBeginXLink)
+	{
+		color=c;
+		if (lmo) ((XLinkObj*)lmo)->updateXLink();
+		return;
+	}	
+	if (partnerXLink)
+		partnerXLink->setColor (c);
+}
+
+QColor XLinkItem::getColor()
+{
+	if (isBeginXLink) return color;
+	if (partnerXLink)
+		return partnerXLink->getColor();
+	else
+		return QColor();
+}
+
+void XLinkItem::setEnd (QPointF p)
+{
+	if (lmo) ((XLinkObj*)lmo)->setEnd (p);
+}
+
+bool XLinkItem::activate ()	
+{
+	if (beginBranch && endBranch)
+	{
+		if (beginBranch==endBranch) return false;
+
+		partnerXLink=model->createXLink (endBranch);
+		partnerXLink->setBegin (beginBranch);
+		partnerXLink->setEnd (endBranch);
+		partnerXLink->partnerXLink=this;
+		partnerXLink->isBeginXLink=false;
+
+		xLinkState=activeXLink;
+		partnerXLink->xLinkState=activeXLink;
+		partnerXLink->setHeading ("xLink to: "+beginBranch->getHeading());
+		setHeading ("xLink to: "+endBranch->getHeading());
+
+		model->updateActions();
+		return true;
+	} else
+		return false;
+}
+
+bool XLinkItem::isBegin()
+{
+	return isBeginXLink;
+}
+
+void XLinkItem::updateXLink()
+{
+	if(lmo && isBeginXLink) 
+		((XLinkObj*)lmo)->updateXLink();
+	else 
+		if (partnerXLink) partnerXLink->updateXLink();
+}
+
+void XLinkItem::updateVisibility()
+{
+	if (lmo) lmo->updateVisibility();
+}
+
+BranchItem* XLinkItem::getPartnerBranch()
+{
+	if (!beginBranch && !endBranch)
+		return NULL;
+	if (isBeginXLink)
+		return endBranch;
+	else	
+		return beginBranch;
+}
+
+
+XLinkItem* XLinkItem::getPartnerXLink()
+{
+	return partnerXLink;
+}
+
+
+QString XLinkItem::saveToDir ()
+{
+	QString s="";
+	if (beginBranch && endBranch && xLinkState==activeXLink)
+	{
+		if (beginBranch==endBranch )
+			qWarning ("XLI::saveToDir  beginBranch==endBranch"); //FIXME-3	s=""
+		else
+		{
+			QString colAttr=attribut ("color",color.name());
+			QString widAttr=attribut ("width",QString().setNum(width,10));
+			QString begSelAttr=attribut ("beginID",model->getSelectString(beginBranch));
+			QString endSelAttr=attribut ("endID",  model->getSelectString(endBranch));
+			s=beginElement ("xlink", colAttr +widAttr +begSelAttr +endSelAttr);
+
+			s+=endElement ("xlink");
+		}
+	}
+	return s;
+}
+
+XLinkObj* XLinkItem::createMapObj(QGraphicsScene *scene)  
+{
+	XLinkObj* xlo=new XLinkObj (scene,this);
+	lmo=(LinkableMapObj*)xlo;
+	return xlo;
+}
+