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Showing just one edge out of many edges [message #1802606]

Tue, 12 February 2019 12:14

Eclipse User

Hello,
I am writing a traceability tool where cells in a table are derived from cells in other tables.
I can show all the traceability with edges in Sirius, but the diagram becomes very messy when I show ALL the edges , as shown in the attached image [showOneEdge.png]
I would like to show just the edges for a single selected table cell (like the one I have highlighted in blue in the image) Is there a way to do this?
I considered that one solution may be to show all the edges and then make a mapping filter with View Condition Expression that hides all edges not connected to the selected cell, is it possible to do this?

Attachment: showOneEdge.PNG
(Size: 239.97KB, Downloaded 83 times)

Re: Showing just one edge out of many edges [message #1802608 is a reply to message #1802606]

Tue, 12 February 2019 12:44

Eclipse User

Maybe I need to use the 'candidate mappings' for a DNode?

Re: Showing just one edge out of many edges [message #1802647 is a reply to message #1802606]

Wed, 13 February 2019 04:29

Eclipse User

Neil Mackenzie wrote on Tue, 12 February 2019 18:14

I considered that one solution may be to show all the edges and then make a mapping filter with View Condition Expression that hides all edges not connected to the selected cell, is it possible to do this?

It's not possible directly because in the expressions defining the mapping or filters you do not have access to the selection (and even if they had, they would not be refreshed/recomputed on every selection change). However you can probably create a custom action (using the standard Eclipse mechanisms) that could be invoked on a cell, which would programmatically hide all the irrelevant edges on the diagram by invoking org.eclipse.sirius.diagram.tools.api.command.view.HideDDiagramElement.

Re: Showing just one edge out of many edges [message #1802649 is a reply to message #1802647]

Wed, 13 February 2019 04:45

Eclipse User

Thanks for the speedy response. That is very useful.

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