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Remove and add several child-elements in one command [message #484544]

Tue, 08 September 2009 07:58

Peter Lang

Messages: 153
Registered: July 2009

Senior Member

Hi,

I've got an action, in which I would like to add/remove several child elements of of a node (displayed as border node items).

I managed to add them the way it's done in mindmap tutorial (http://wiki.eclipse.org/GMF_Tutorial_Part_3#Custom_Actions), but I guess I would have to add other commands to set attributes for these new nodes, so it would be quite a lot of code. And, I did not find any DestroyViewRequestFactory, so I don't get a destroy request for now.

I think the best solution would be, to change the underlying EObjects and then update the view. This results in a "java.lang.IllegalStateException: Cannot modify resource set without a write transaction".

I tried to somehow get this into a command and execute on stack, but I got lost somewhere between requests, eclipse-, emf- and gef-Commands, ICommands, TransactionalEditingDomain and IDiagramEditDomain ;-)

I'm sure it's quite simple when it's done, so could anyone help me with this?

Thanks a lot,
Peter

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Re: Remove and add several child-elements in one command [message #484825 is a reply to message #484544]

Wed, 09 September 2009 12:57

Alexander Shatalin

Messages: 2928
Registered: July 2009

Senior Member

Hello Peter,

Create a subclass of AbstractTransactionalCommand and execute it using OperationHistoryFactory.getOperationHistory().execute()
method

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Alex Shatalin

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