private void OnNodesConnecting(NConnectionCancelEventArgs args)
{
NDynamicPort port1 = (NDynamicPort)document.GetElementFromUniqueId(args.UniqueId1);
NDynamicPort port2 = (NDynamicPort)document.GetElementFromUniqueId(args.UniqueId2);
int side1 = GetSideIndex(port1);
int side2 = GetSideIndex(port2);
bool sidesFail = side1 % 2 != side2 % 2;
bool alreadyConnected = port1.ConnectedPoints != null || port2.ConnectedPoints != null;
if (sidesFail || alreadyConnected)
{
// The ports cannot be connected, so cancel the connection and apply a bounce back force
NPoint offset = new NPoint(0, 0);
bool even = side1 % 2 == 0;
if (sidesFail)
{
if (even)
{
offset.X = (1 - side1) * SIZE;
}
else
{
offset.Y = (2 - side1) * SIZE;
}
}
else
{
if (!even)
{
offset.X = (2 - side1) * SIZE;
}
else
{
offset.Y = (1 - side1) * SIZE;
}
}
port1.Shape.Location = new NPointF(port1.Shape.Location.X + offset.X, port1.Shape.Location.Y + offset.Y);
args.Cancel = true;
}
}
private void EventSinkService_Disconnecting(NConnectionCancelEventArgs args)
{
LogEvent(
"Document: Disconnecting"
);
}