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Repaint whole Diagram [message #1077863]

Fri, 02 August 2013 08:39

Juliane Mueller

Messages: 30
Registered: August 2011

Member

Hello all,

I have drawn a diagram automatically.
By a certain event the whole diagram should be repainted automatically with the new values.
I've tried this with the removeFeature and new AddFeatures. But there always come an exception that I can't modify a resource without a writing transaction.

I also tried to create a new diagram with the same URI as before, but if the diagram is open by the event, it is not refreshed.

Are there any other solutions?

I'm looking forward for your reply!

Best regards, Juliane

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Re: Repaint whole Diagram [message #1077964 is a reply to message #1077863]

Fri, 02 August 2013 11:14

Michael Wenz

Messages: 1931
Registered: July 2009
Location: Walldorf, Germany

Senior Member

Juliane,

what do you mean with "repainted"?

Just an update of what the editor shows to the state the Graphiti model is
in? In that case calling refresh on the editor should help.

In case your would like to update the Graphiti model to the current state of
e.g. your domain model I would suggest to implement your own subclass of
DefaultUpdateDiagramFeature and call that. Note that any feature you call
and makes changes to the EMF models need to do those changes inside a
transaction on the transactional editing domain of the editor otherwise you
will see the exception you got.

Michael

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Re: Repaint whole Diagram [message #1082231 is a reply to message #1077964]

Thu, 08 August 2013 09:20

Juliane Mueller

Messages: 30
Registered: August 2011

Member

Thanks Michael,

I've found the solution for my problem. Now I remove everything from the diagram with the RemoveFeature and afterwards I call my own UpdateFeature, which repaints the whole diagram.

Regards, Juliane

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Re: Repaint whole Diagram [message #1095009 is a reply to message #1082231]

Mon, 26 August 2013 14:02

Michael Wenz

Messages: 1931
Registered: July 2009
Location: Walldorf, Germany

Senior Member

Juliane,

that surely works for small diagrams, but might cause performance issues
with larger diagrams. Maybe it would be better to implement the update
features in a way that they first check what is already on the diagram and
only update the missing parts (plus maybe delete no longer needed parts).

Michael

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Re: Repaint whole Diagram [message #1128962 is a reply to message #1095009]

Tue, 08 October 2013 06:46

PALANI SANKAR

Messages: 35
Registered: April 2013

Member

Hi Michael/Juliane

I am facing performance issue since my requirements contains larger diagrams. Is there any way to improve it? Could you please suggest a way to improve my performance.

Thanks
Palani

Thanks
Palani

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Re: Repaint whole Diagram [message #1130118 is a reply to message #1128962]

Wed, 09 October 2013 08:35

Michael Wenz

Messages: 1931
Registered: July 2009
Location: Walldorf, Germany

Senior Member

Palani,

that strongly depends on you graphical model. As I already wrote, in general
it is better to avoid a complete redraw and instead check if the existing
parts on the diagram can be reused and add/remove/adapt only the no more
current things.

Michael

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