void EndConnection(Guid nodeId, int portIndex, PortType portType)
{
bool isInPort = portType == PortType.INPUT;
NodeModel node = CurrentWorkspace.GetModelInternal(nodeId) as NodeModel;
if (node == null)
{
return;
}
PortModel portModel = isInPort ? node.InPorts[portIndex] : node.OutPorts[portIndex];
ConnectorModel connectorToRemove = null;
// Remove connector if one already exists
if (portModel.Connectors.Count > 0 && portModel.PortType == PortType.INPUT)
{
connectorToRemove = portModel.Connectors[0];
CurrentWorkspace.Connectors.Remove(connectorToRemove);
portModel.Disconnect(connectorToRemove);
var startPort = connectorToRemove.Start;
startPort.Disconnect(connectorToRemove);
}
// We could either connect from an input port to an output port, or
// another way around (in which case we swap first and second ports).
PortModel firstPort, second;
if (portModel.PortType != PortType.INPUT)
{
firstPort = portModel;
second = activeStartPort;
}
else
{
// Create the new connector model
firstPort = activeStartPort;
second = portModel;
}
ConnectorModel newConnectorModel = CurrentWorkspace.AddConnection(firstPort.Owner,
second.Owner, firstPort.Index, second.Index, PortType.INPUT);
// Record the creation of connector in the undo recorder.
var models = new Dictionary <ModelBase, UndoRedoRecorder.UserAction>();
if (connectorToRemove != null)
{
models.Add(connectorToRemove, UndoRedoRecorder.UserAction.Deletion);
}
models.Add(newConnectorModel, UndoRedoRecorder.UserAction.Creation);
CurrentWorkspace.RecordModelsForUndo(models);
activeStartPort = null;
}
