private void Port_MouseDown(object sender, MouseButtonEventArgs e)
{
if (e.LeftButton == MouseButtonState.Pressed)
{
switch (HostCanvas.SplineMode)
{
case SplineModes.Nothing:
HostCanvas.TempStartPort = this;
HostCanvas.SplineMode = SplineModes.Second;
break;
case SplineModes.Second:
if (
(
(
HostCanvas.TempStartPort.DataType.IsCastableTo(DataType) &&
HostCanvas.TypeSensitive && PortType == PortTypes.Output
||
DataType.IsCastableTo(HostCanvas.TempStartPort.DataType) &&
HostCanvas.TypeSensitive && PortType == PortTypes.Input
) // data types matching
||
(!HostCanvas.TypeSensitive) // data types must not match
) &&
PortType != HostCanvas.TempStartPort.PortType
// is not same port type --> input to output or output to input
&& !Equals(ParentNode, HostCanvas.TempStartPort.ParentNode)) // is not same node
{
Connector connector;
if (PortType == PortTypes.Output)
{
if (HostCanvas.TempStartPort.ConnectedConnectors.Count > 0)
{
if (!HostCanvas.TempStartPort.MultipleConnectionsAllowed)
{
foreach (var tempConnector in HostCanvas.TempStartPort.ConnectedConnectors)
{
tempConnector.RemoveFromCanvas();
}
HostCanvas.TempStartPort.ConnectedConnectors.Clear();
}
}
connector = new Connector(HostCanvas, this, HostCanvas.TempStartPort);
}
else
{
if (ConnectedConnectors.Count > 0)
{
if (!MultipleConnectionsAllowed)
{
foreach (var tempConnector in ConnectedConnectors)
{
tempConnector.RemoveFromCanvas();
}
ConnectedConnectors.Clear();
}
}
connector = new Connector(HostCanvas, HostCanvas.TempStartPort, this);
}
HostCanvas.ConnectorCollection.Add(connector);
}
HostCanvas.SplineMode = SplineModes.Nothing;
HostCanvas.ClearTempLine();
break;
}
}
else if (e.RightButton == MouseButtonState.Pressed)
{
foreach (var connector in ConnectedConnectors)
{
connector.RemoveFromCanvas();
}
ConnectedConnectors.Clear();
}
// e.Handled = true;
}
