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Getting the LayoutConstraint of a Node without opening a session? [message #1847125]

Fri, 15 October 2021 11:07

Matei Gabriel Anita

Messages: 2
Registered: September 2021

Junior Member

I need to modify a node's size, however I am not able to open a session at this point. Is this achievable?

[Updated on: Fri, 15 October 2021 11:07]

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Re: Getting the LayoutConstraint of a Node without opening a session? [message #1847137 is a reply to message #1847125]

Fri, 15 October 2021 15:43

Laurent Redor

Messages: 300
Registered: July 2009

Senior Member

Hi,
There is no API to manipulate the node size outside of a session. At the end, when you resize a node (with the mouse), a org.eclipse.gmf.runtime.diagram.ui.commands.SetBoundsCommand is called. You can do the same, but you need at least a TransactionalEditingDomain, where the aird resource is loaded, and the node to resize, in the IAdaptable parameter (usually a org.eclipse.gmf.runtime.emf.core.util.EObjectAdapter).
Moreover, it sounds risky. Changing the size of the node could have consequences on other elements (the edge routing for example).
Regards,
Laurent

Laurent Redor - Obeo

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