private ViewModelConnect AddConnect(ViewModelConnect parameter, ViewModelConnect result)
{
if (result == null)
{
return(parameter);
}
result.FromConnector.CommandAdd.Execute();
Connects.Add(result);
return(result);
}
public static ViewModelConnect FromXElement(ViewModelNodesCanvas nodesCanvas, XElement node, out string errorMessage, Func <string, bool> actionForCheck)
{
ViewModelConnect viewModelConnect = null;
errorMessage = null;
string name = node.Attribute("Name")?.Value;
string from = node.Attribute("From")?.Value;
string to = node.Attribute("To")?.Value;
if (string.IsNullOrEmpty(name))
{
errorMessage = "Connect without name";
return(viewModelConnect);
}
if (string.IsNullOrEmpty(from))
{
errorMessage = "Connect without from point";
return(viewModelConnect);
}
if (string.IsNullOrEmpty(to))
{
errorMessage = "Connect without to point";
return(viewModelConnect);
}
if (actionForCheck(name))
{
errorMessage = String.Format("Contains more than one connect with name \"{0}\"", name);
return(viewModelConnect);
}
ViewModelNode nodeFrom = nodesCanvas.Nodes.Single(x => x.Name == from);
ViewModelNode nodeTo = nodesCanvas.Nodes.Single(x => x.Name == to);
nodeFrom.CurrentConnector.Name = name;
if (nodeFrom == nodeTo)
{
nodeFrom.CurrentConnector.CommandSetAsLoop.ExecuteWithSubscribe();
}
else
{
viewModelConnect = new ViewModelConnect(nodeFrom.NodesCanvas, nodeFrom.CurrentConnector);
viewModelConnect.ToConnector = nodeTo.Input;
nodeFrom.CommandAddEmptyConnector.ExecuteWithSubscribe();
}
return(viewModelConnect);
}
private ViewModelConnect DeleteConnect(ViewModelConnect parameter, ViewModelConnect result)
{
Connects.Remove(parameter);
parameter.FromConnector.CommandDelete.Execute();
return(parameter);
}
private void AddFreeConnect(ViewModelConnector fromConnector)
{
DraggedConnect = new ViewModelConnect(fromConnector);
Connects.Add(DraggedConnect);
}