[news.eclipse.modeling.gmf] Re: many small questions

[Alex Shatalin <vano@xxxxxxxxxxx>]

Hello TDB,

> 1) How can I add/remove children elements in response to a model
> property change of this element?
I suggest you to add appropriate constraint to the corresponding child node 
mapping and modify generated code (child node EditPart) to call parent node 
update (see F5 action implementation) on receiving corresponding property 
change event.

> 2) Is there a way to have a property in ecore model that is a
> reference to a resource (file) in a project.
AFAIK it is not possible now â EMF resources can not be referenced from .ecore 
model, but I think you can use EMF âInstance Type Nameâ property to add references 
to external (existing) classes/interfaces with the appropriate implementation 
into .ecore model.

> I suspect it's EResource, but I get a transformation error: attribute
Well, I even can not see EResource in my workspace.. Do I miss something? 
Do you know a name of plugin providing this class/interface?

> 3) Is there a way to listen to element/figure movement and update
> external (feature) label location accordingly?
Sure. You can listen for appropriate changes in notation model - Node.layoutConstraint 
is an attribute keeping a reference to Bounds instance. BTW, I think external 
label should be moved together with the original element at least for the 
diagram nodes/links it should be implemented this way.

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Alex Shatalin