// Called during drag-drop to determine whether the supplied source and target combination is valid.
internal static bool CanAcceptSourceAndTarget(ModelElement sourceElement, ModelElement targetElement)
{
SocketUse socketUse = sourceElement as SocketUse ?? targetElement as SocketUse;
Socket socket = sourceElement as Socket ?? targetElement as Socket;
if (socket == null || socketUse == null)
{
return(false);
}
return(socketUse.CanConnectTo(socket));
}
private static void PushPosibleConnections(IEnumerable <Socket> sockets, SocketUse socketUse, Stack <PossibleConnection> stack)
{
foreach (var socket in sockets)
{
if (socket.SocketUse != null)
{
continue;
}
if (socketUse.CanConnectTo(socket))
{
stack.Push(new PossibleConnection()
{
Socket = socket, SocketUse = socketUse
});
}
}
}