void diagramView_ConnectorDragEnd(object sender, ConnDragEndRoutedEventArgs evtArgs)
{
foreach (Node n in diagramModel.Nodes)
{
n.IsDragConnectionOver = false;
}
}
//Event for changing the LineStyle of the Lien/connector
void diagramView_AfterConnectionCreate(object sender, ConnDragEndRoutedEventArgs evtArgs)
{
LineConnector line = evtArgs.Connector;
line.LineStyle.Stroke = Brushes.Black;
line.LineStyle.StrokeThickness = 2;
line.TailDecoratorShape = DecoratorShape.None;
}
//Revert chages if it is an invalid connection
void diagramView_ConnectorDragEnd(object sender, ConnDragEndRoutedEventArgs evtArgs)
{
if (!newConnDropped)
{
//If HeadNode or HeadPort is changed
if (isHead)
{
//Revert changes if it is an invalid connection
if (evtArgs.Connector.HeadNode != null && evtArgs.Connector.ConnectionHeadPort != null)
{
if (!(evtArgs.Connector.ConnectionHeadPort.Tag as string).Contains("In"))
{
evtArgs.Connector.HeadNode = oldNode;
evtArgs.Connector.ConnectionHeadPort = oldPort;
}
}
else
{
evtArgs.Connector.HeadNode = oldNode;
evtArgs.Connector.ConnectionHeadPort = oldPort;
}
}
//If TailNode or TailPort is Changed
if (!isHead)
{
//Revert changes if it is an invalid connection
if (evtArgs.Connector.TailNode != null && evtArgs.Connector.ConnectionTailPort != null)
{
if (!(evtArgs.Connector.ConnectionTailPort.Tag as string).Contains("Out"))
{
evtArgs.Connector.TailNode = oldNode;
evtArgs.Connector.ConnectionTailPort = oldPort;
}
}
else
{
evtArgs.Connector.TailNode = oldNode;
evtArgs.Connector.ConnectionTailPort = oldPort;
}
}
}
//If new connection is created
else
{
//If it is an invalid connection delete it.
LineConnector DroppedConnector = evtArgs.Connector;
if (DroppedConnector.HeadNode != null && DroppedConnector.ConnectionHeadPort != null)
{
if (!(DroppedConnector.ConnectionHeadPort.Tag as string).Contains("Out"))
{
diagramControl.Model.Connections.Remove(DroppedConnector);
}
}
else
{
diagramControl.Model.Connections.Remove(DroppedConnector);
}
if (DroppedConnector.TailNode != null && DroppedConnector.ConnectionTailPort != null)
{
if (!(DroppedConnector.ConnectionTailPort.Tag as string).Contains("In"))
{
diagramControl.Model.Connections.Remove(DroppedConnector);
}
}
else
{
diagramControl.Model.Connections.Remove(DroppedConnector);
}
}
newConnDropped = false;
}
