Connector CreateLink(UIElement source, UIElement dest, ModelItem linkModelItem)
{
Connector newConnector = null;
ConnectionPoint srcConnPoint = null, destConnPoint = null;
if (this.srcConnectionPointForAutoConnect != null)
{
srcConnPoint = this.srcConnectionPointForAutoConnect;
destConnPoint = FlowchartDesigner.GetDestinationConnectionPointForAutoConnect(dest, srcConnPoint);
this.srcConnectionPointForAutoConnect = null;
}
else if (this.srcConnectionPointForAutoSplit != null && this.srcConnectionPointForAutoSplit.ParentDesigner == source)
{
srcConnPoint = this.srcConnectionPointForAutoSplit;
destConnPoint = this.GetDestinationConnectionPointForAutoSplit(srcConnPoint, dest);
this.srcConnectionPointForAutoSplit = null;
}
else if (this.destConnectionPointForAutoSplit != null && this.destConnectionPointForAutoSplit.ParentDesigner == dest)
{
destConnPoint = this.destConnectionPointForAutoSplit;
srcConnPoint = this.GetSourceConnectionPointForAutoSplit(destConnPoint, source);
this.destConnectionPointForAutoSplit = null;
}
else
{
string errorMessage;
GetSrcDestConnectionPoints(source, dest, out srcConnPoint, out destConnPoint, out errorMessage);
}
if (srcConnPoint != null && destConnPoint != null)
{
newConnector = CreateLink(srcConnPoint, destConnPoint, linkModelItem);
}
return(newConnector);
}
Connector CreateLink(ConnectionPoint sourceConnectionPoint, UIElement dest, ModelItem linkModelItem)
{
Connector newConnector = null;
ConnectionPoint destConnectionPoint = null;
if (this.srcConnectionPointForAutoConnect != null)
{
Fx.Assert(this.srcConnectionPointForAutoConnect == sourceConnectionPoint, "sourceConnectionPoint should equal to this.srcConnectionPointForAutoConnect");
destConnectionPoint = FlowchartDesigner.GetDestinationConnectionPointForAutoConnect(dest, sourceConnectionPoint);
this.srcConnectionPointForAutoConnect = null;
}
else if (this.srcConnectionPointForAutoSplit == sourceConnectionPoint)
{
destConnectionPoint = this.GetDestinationConnectionPointForAutoSplit(this.srcConnectionPointForAutoSplit, dest);
this.srcConnectionPointForAutoSplit = null;
}
else
{
string errorMessage;
destConnectionPoint = FindBestMatchDestConnectionPoint(sourceConnectionPoint, dest, out errorMessage);
}
if (destConnectionPoint != null)
{
newConnector = CreateLink(sourceConnectionPoint, destConnectionPoint, linkModelItem);
}
return(newConnector);
}