public Connection(WorkflowCanvas canvas, RenderNode startPoint, RenderNode endPoint, ConnectingLine line)
{
this.Canvas = canvas;
Line = line;
if (startPoint.Node.GetConnectionType() == INodeConnectionType.OUTPUT &&
endPoint.Node.GetConnectionType() == INodeConnectionType.INPUT)
{
Input = (BaseInputNode)endPoint.Node;
Output = (BaseOutputNode)startPoint.Node;
Start = startPoint;
End = endPoint;
}
else if (startPoint.Node.GetConnectionType() == INodeConnectionType.INPUT &&
endPoint.Node.GetConnectionType() == INodeConnectionType.OUTPUT)
{
Input = (BaseInputNode)startPoint.Node;
Output = (BaseOutputNode)endPoint.Node;
Start = endPoint;
End = startPoint;
}
contextMenu = new ContextMenu();
MenuItem item = new MenuItem();
item.Header = "Disconnect";
contextMenu.Items.Add(item);
item.Click += delegate
{
Disconnect();
};
}
/// <summary>
/// Finishes a temporary connection started by <see cref="StartConnection"/>.
/// This will solidify a connection and add it to the active connections
/// list to prevent redrawing of static lines.
/// </summary>
/// <param name="node">The node.</param>
public void FinishConnection(RenderNode node)
{
ConnectingLine connectingLine = new ConnectingLine(TempLine.Line.Stroke);
connectingLine.Line.StrokeThickness = node.Visual.Width / LINE_THICKNESS_FRACTION;
Connection connection = new Connection(this, StartNode, node, connectingLine);
if (connection.IsValid())
{
bool success = connection.Connect();
if (success)
{
RedrawLine(connection);
Connections.Add(connection);
Children.Add(connection.Line.Line);
Children.Add(connection.Line.Arrowhead);
connection.Start.Parent.OnModuleMove += OnConnectedModuleMove;
connection.End.Parent.OnModuleMove += OnConnectedModuleMove;
}
}
// else let it fall out of scope to be garbage collected
StartNode = null;
TempLine.SetVisibility(Visibility.Collapsed);
}