void componentChangeService_ComponentRemoving(object sender, ComponentEventArgs e)
{
if (bLoading)
{
return;
}
MathExpViewer mv = e.Component as MathExpViewer;
if (mv != null)
{
List <LinkLineNodePort> ports = mv.GetPorts();
for (int i = 0; i < ports.Count; i++)
{
LinkLineNode l = ports[i];
l.ClearLine();
root.Controls.Remove(ports[i]);
root.Controls.Remove(ports[i].Label);
if (l is LinkLineNodeInPort)
{
if (l.LinkedOutPort == null)
{
//it is not linked to an output, remove all nodes
l = (LinkLineNode)l.PrevNode;
while (l != null)
{
root.Controls.Remove(l);
l = (LinkLineNode)l.PrevNode;
}
}
else
{
l.LinkedOutPort.LinkedPortID = 0;
//replace this port with a node
LinkLineNode prev = (LinkLineNode)l.PrevNode;
LinkLineNode end = new LinkLineNode(null, prev);
end.Location = l.Location;
root.Controls.Add(end);
prev.SetNext(end);
if (prev.Line == null)
{
prev.CreateForwardLine();
}
else
{
if (prev.Line.EndPoint == l)
{
prev.Line.SetEnd(end);
}
else
{
end.CreateBackwardLine();
}
}
}
}
else if (l is LinkLineNodeOutPort)
{
if (l.LinkedInPort == null)
{
//it is not linked to an input, remove all nodes
l = (LinkLineNode)l.NextNode;
while (l != null)
{
root.Controls.Remove(l);
l = (LinkLineNode)l.NextNode;
}
}
else
{
l.LinkedInPort.LinkedPortID = 0;
//replace this port with a node
LinkLineNode next = (LinkLineNode)l.NextNode;
if (next.Parent != null)
{
LinkLineNode end = new LinkLineNode(next, null);
end.Location = l.Location;
next.Parent.Controls.Add(end);
next.SetPrevious(end);
if (next.Line == null)
{
next.CreateBackwardLine();
}
else
{
if (next.Line.StartPoint == l)
{
next.Line.SetStart(end);
}
else
{
end.CreateForwardLine();
}
}
}
}
}
}
}
}
