public void DeleteModel(XmlElement modelData)
{
ModelBase model = GetModelForElement(modelData);
if (model is NoteModel)
{
Notes.Remove(model as NoteModel);
}
else if (model is ConnectorModel)
{
ConnectorModel connector = model as ConnectorModel;
Connectors.Remove(connector);
connector.NotifyConnectedPortsOfDeletion();
}
else if (model is NodeModel)
{
Nodes.Remove(model as NodeModel);
}
else
{
// If it gets here we obviously need to handle it.
throw new InvalidOperationException(string.Format(
"Unhandled type: {0}", model.GetType().ToString()));
}
}
/// <summary>
/// Deletes all connectors attached to this PortModel.
/// </summary>
public void DestroyConnectors()
{
if (Owner == null)
{
return;
}
while (Connectors.Any())
{
ConnectorModel connector = Connectors[0];
Owner.WorkSpace.Connectors.Remove(connector);
connector.NotifyConnectedPortsOfDeletion();
}
}
void BeginConnection(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];
// Test if port already has a connection, if so grab it and begin connecting
// to somewhere else (we don't allow the grabbing of the start connector).
if (portModel.Connectors.Count > 0 && portModel.Connectors[0].Start != portModel)
{
activeStartPort = portModel.Connectors[0].Start;
// Disconnect the connector model from its start and end ports
// and remove it from the connectors collection. This will also
// remove the view model.
ConnectorModel connector = portModel.Connectors[0];
if (CurrentWorkspace.Connectors.Contains(connector))
{
List <ModelBase> models = new List <ModelBase>()
{
connector
};
CurrentWorkspace.RecordAndDeleteModels(models);
connector.NotifyConnectedPortsOfDeletion();
}
}
else
{
activeStartPort = portModel;
}
}