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Set Coordinates/Position from Node Creation Tool ? [message #1726538]

Mon, 14 March 2016 14:07

Nikolay Manolov

Messages: 24
Registered: June 2012

Junior Member

Hi,

Is it possible to set the position of a new element from a Node Creation or a generic tool?
I have a Node Creation Tool that creates a new element instance inside a container and the new element is placed where I clicked. I have defined additional behavior to that tool so that if you click on an existing node in that container the clicked node is replicated. In that case, however, the new node is placed "randomly" somewhere on the diagram. I would like, if possible, in addition to creating an instance to also create the graphical representation and set the position to be where I clicked (on another node inside a container) + some offset.

Looked in the Sirius code for anything about setting the position but It seems this may be delegated to gmf along with the click event.

So, the question is if it is possible to set/affect the position of a graphical representation directly from a Node Creation Tool/Diagram Specification. If not, would it be possible from an external JavaAction or any other way?

Regards,
Nik

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Re: Set Coordinates/Position from Node Creation Tool ? [message #1726632 is a reply to message #1726538]

Tue, 15 March 2016 09:40

Esteban Dugueperoux

Messages: 472
Registered: July 2009

Senior Member

Hi Nikolay,

You can define the location and size of additional created nodes/edges
by using the "CreateView/CreateEdgeView" operation in your creation tool
and calling a java service to use
org.eclipse.sirius.diagram.ui.business.api.view.SiriusLayoutDataManager
API. Sirius will use this singleton to know with which location and size
create the nodes/edges.
After having called CreateView operation to get the DDiagramElement
created, you can call a java service as sub operation (a ChangeContext
for example). And in this java service call :

LayoutData layoutData =
SiriusLayoutDataManager.INSTANCE.getData(createdView, true);
layoutData = new RootLayoutData(layoutData.getTarget(), newLocation,
newSize);
SiriusLayoutDataManager.INSTANCE.addData(layoutData);

Best Regards.

Le 14/03/2016 15:07, Nikolay Manolov a écrit :
> Hi,
>
> Is it possible to set the position of a new element from a Node Creation
> or a generic tool? I have a Node Creation Tool that creates a new
> element instance inside a container and the new element is placed where
> I clicked. I have defined additional behavior to that tool so that if
> you click on an existing node in that container the clicked node is
> replicated. In that case, however, the new node is placed "randomly"
> somewhere on the diagram. I would like, if possible, in addition to
> creating an instance to also create the graphical representation and set
> the position to be where I clicked (on another node inside a container)
> + some offset.
>
> Looked in the Sirius code for anything about setting the position but It
> seems this may be delegated to gmf along with the click event.
>
> So, the question is if it is possible to set/affect the position of a
> graphical representation directly from a Node Creation Tool/Diagram
> Specification. If not, would it be possible from an external JavaAction
> or any other way?
>
> Regards,
> Nik
>
>

--
Esteban Dugueperoux - Obeo

Need training or professional services for Sirius?
http://www.obeodesigner.com/sirius

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Re: Set Coordinates/Position from Node Creation Tool ? [message #1727591 is a reply to message #1726632]

Thu, 24 March 2016 09:12

Alx Hvx

Messages: 40
Registered: March 2016

Member

Hi,
I have the a problem with the command : SiriusLayoutDataManager.INSTANCE.getData(createdView, true);
I use it with a DDiagramElement that I retrieve programatically

The problem is that It always return null.

Thanks.

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Re: Set Coordinates/Position from Node Creation Tool ? [message #1727693 is a reply to message #1727591]

Fri, 25 March 2016 11:35

Bailey Trenton

Messages: 31
Registered: May 2015

Member

Hello,
I had a similar use case in my project. We have border nodes with a double click action on them that creates a new node floating right off the border node when double clicked. I solved the location issue by creating and registering a ModelChangeTrigger that listens for the creation of the new node in the model and then sets its location. It seems works for us. You have to be careful about matching the notification because you can get some unintended side effects if your filter matches notifications caused by other changes.

Hope this helps

Bailey

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