internal static List <ConnectionPoint> GetEmptyConnectionPoints(UIElement designer)
{
List <ConnectionPoint> connectionPoints = StateContainerEditor.GetConnectionPoints(designer);
if (connectionPoints != null)
{
return(new List <ConnectionPoint>(connectionPoints.Where <ConnectionPoint>(
(p) => { return p.AttachedConnectors == null || p.AttachedConnectors.Count == 0; })));
}
return(new List <ConnectionPoint>());
}
static ConnectionPoint ConnectionPointHitTest(UIElement element, Point hitPoint)
{
ConnectionPoint hitConnectionPoint = null;
List <ConnectionPoint> connectionPoints = StateContainerEditor.GetConnectionPoints(element);
foreach (ConnectionPoint connPoint in connectionPoints)
{
if (connPoint != null)
{
// We need to transform the connection point location to be relative to the outmost panel
FreeFormPanel panel = GetVisualAncestor <FreeFormPanel>(element);
if (new Rect(panel.GetLocationRelativeToOutmostPanel(connPoint.Location) + connPoint.HitTestOffset, connPoint.HitTestSize).Contains(hitPoint))
{
hitConnectionPoint = connPoint;
break;
}
}
}
return(hitConnectionPoint);
}
//This returns the closest non-outgoing connectionPoint on dest. Return value will be different than sourceConnectionPoint.
static ConnectionPoint GetClosestDestConnectionPoint(ConnectionPoint sourceConnectionPoint, UIElement dest)
{
ConnectionPoint destConnectionPoint = null;
if (sourceConnectionPoint.PointType != ConnectionPointType.Incoming)
{
destConnectionPoint = GetClosestConnectionPointNotOfType(sourceConnectionPoint, StateContainerEditor.GetConnectionPoints(dest), ConnectionPointType.Outgoing);
}
return(destConnectionPoint);
}
//This returns the closest non-incoming connectionPoint on source. Return value will be different than destConnectionPoint.
static ConnectionPoint GetClosestSrcConnectionPoint(UIElement src, ConnectionPoint destConnectionPoint)
{
ConnectionPoint srcConnectionPoint = null;
if (destConnectionPoint.PointType != ConnectionPointType.Outgoing)
{
srcConnectionPoint = GetClosestConnectionPointNotOfType(destConnectionPoint, StateContainerEditor.GetConnectionPoints(src), ConnectionPointType.Incoming);
}
return(srcConnectionPoint);
}