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Normal Topic limit one link per node (Read 1652 times)
tmtton
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limit one link per node
May 4th, 2009 at 2:52am
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For some ShapeNode, I want to prevent users from creating more than one link. I have the following, but new link still gets created. I use JDiagram 2.1.

public void linkCreating(LinkValidationEvent e) {
DiagramLink link = e.getLink();
DiagramNode fromNode = link.getOrigin();
if (fromNode.getOutgoingLinks().isEmpty() == false) {
      diagram.getLinks().remove(link);
   }
}
  
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Stoyo
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Re: limit one link per node
Reply #1 - May 4th, 2009 at 9:23am
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The link is not added to the Diagram.Links list until you release the mouse button. You should call LinkValidationEvent.cancelDrag() to stop the link creation.

I hope that helps,
Stoyan
  
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