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Connections connected to connections [message #718517]

Wed, 24 August 2011 11:19

Eclipse User

I'm having a heck of time getting a connection connected to another connection. Can someone please post a working example?

Thanks!
Bob

Re: Connections connected to connections [message #719259 is a reply to message #718517]

Fri, 26 August 2011 10:00

Eclipse User

There's a small sample implementation in the Sketch test tool (available in
the Git repository in the tests folder) which at least explains the basic
usages.

HTH,
Michael

"Bob Brodt" <forums-noreply@eclipse.org> wrote in message
news:j33463$gv2$1@news.eclipse.org...
> I'm having a heck of time getting a connection connected to another
> connection. Can someone please post a working example?
>
> Thanks!
> Bob

Re: Connections connected to connections [message #726509 is a reply to message #719259]

Sun, 18 September 2011 08:12

Eclipse User

Hi all,

are you referring to AbstractSketchCreateSimpleConnectionFeature.java? To this piece of code:

if (startAnchor == null && (context.getSourcePictogramElement() instanceof Connection)) {

			Shape s = SketchUtil.createConnectionPoint(context.getSourceLocation(), getDiagram());
			startAnchor = cs.createChopboxAnchor(s);

			Connection splitConnection = (Connection) context.getSourcePictogramElement();
			createConnection(splitConnection.getStart(), startAnchor);
			createConnection(startAnchor, splitConnection.getEnd());

			EcoreUtil.delete(splitConnection);
		}

It seems that the "connection to a connection" functionality is actually a "split connection in two" functionality? Is that so? From the above code, I would also assume that e.g. any decorators get lost? What happens if you click on the now split connection? Will only half of it get selected?

Thanks,

Andreas

Re: Connections connected to connections [message #727028 is a reply to message #726509]

Tue, 20 September 2011 04:20

Eclipse User

Yes, that's right. The coding basically splits the existing connection into
two new ones. Decorators would have to be moved along to the new
connection(s) as it it suitable for the tool. Selecting a part of the split
connection will select only one part.

The functionality offered by Graphiti is intentionally very basic to enable
tool builders to create a bunch of different behaviours when splitting
connections.

Michael

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