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setting property when diagram loads [message #189552]

Tue, 27 May 2008 15:14

Eclipse User

Originally posted by: nico.lammers.gmail.com

My datafile comes from a different source than EMF/GMF/ECore/Whatever,
and I use a custom DocumentProvider (created by someone else than me).

When I open the diagram it is possible that some attributes of some
elements are not set. For visualisation purposes I'd like to give them a
default value.

What is a good way to do this?

~ Nico

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Re: setting property when diagram loads [message #189675 is a reply to message #189552]

Wed, 28 May 2008 09:44

Alexander Shatalin

Messages: 2928
Registered: July 2009

Senior Member

Hello Nico,

You can use "View Pattern"+"View Method" of label mapping to make diagram
labels displaying default values if corresponding reference is null in the
domain model.

-----------------
Alex Shatalin

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Re: setting property when diagram loads [message #189723 is a reply to message #189675]

Wed, 28 May 2008 11:35

Eclipse User

Originally posted by: nico.lammers.gmail.com

Actually I just investigated that possibility, but I haven't found out
how exactly. Actually the value in the domain model isn't null, but an
empty string.

Can you give me an example? I'm either just lost or missing something..
Thanks.

~ Nico

Alex Shatalin wrote:
> Hello Nico,
>
> You can use "View Pattern"+"View Method" of label mapping to make
> diagram labels displaying default values if corresponding reference is
> null in the domain model.
>
> -----------------
> Alex Shatalin
>
>

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Re: setting property when diagram loads [message #189794 is a reply to message #189552]

Wed, 28 May 2008 14:58

Francisco Javier Cano

Messages: 21
Registered: July 2009

Junior Member

If it's a document provider for a GMF diagram then it must implement the
org.eclipse.gmf.runtime.diagram.ui.resources.editor.document .IDocumentProvider
interface, right?
If so, take a look at the connect(Object) method of the document
provider. Maybe you can do something there.

Cheers,
Javi
--

Nico Lammers escribió:
> My datafile comes from a different source than EMF/GMF/ECore/Whatever,
> and I use a custom DocumentProvider (created by someone else than me).
>
> When I open the diagram it is possible that some attributes of some
> elements are not set. For visualisation purposes I'd like to give them a
> default value.
>
> What is a good way to do this?
>
> ~ Nico

Report message to a moderator

Re: setting property when diagram loads [message #189826 is a reply to message #189723]

Wed, 28 May 2008 16:10

Alexander Shatalin

Messages: 2928
Registered: July 2009

Senior Member

Hello Nico,

> Actually I just investigated that possibility, but I haven't found out
> how exactly. Actually the value in the domain model isn't null, but an
> empty string.
Well, you are right - it looks not possible to write such a parser using
MassageFormat or other formatting options. You can try using LabelMapping
instead of FeatureLabelMapping and plug in your own parser via extension
point.

-----------------
Alex Shatalin

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