[news.eclipse.tools.gef] Re: [Zest] Follow-Up Question on Domain Objects

[Philip Mayer <eclipse@xxxxxxxxxx>]

Dear all,

yes, there is: call .getGraphData() on LayoutEntity or LayoutConnection. 
Cast the result to GraphNode or GraphConnection, then use .getData() to 
access the domain model.

Thanks,

Philip


Philip Mayer wrote:
> Dear all,
>
> Wrote my own algorithm now.
>
> Another question: Is there a "legal" way for finding out the underlying 
> domain object of a LayoutRelationship from the layouting classes (or at 
> all from outside the graph classes)?
>
> Thanks,
>
> Philip
>
>
> Philip Mayer wrote:
> > Hi,
> >
> > I am trying to use the ZEST DirectedGraphLayoutAlgorithm for a typical 
> > Labelled Transition System with a few loops. I have a couple of nodes 
> > and connections in-between, which are provided by an 
> > IGraphContentProvider; labels are provided by a LabelProvider.
> >
> > The problem is that the nodes do not show up at all; all I see are 
> > connections. Is the algorithm complete? (There are a lot of TODOs in 
> > the code).
> >
> >  viewer= new GraphViewer(parent, SWT.NONE);
> >  viewer.setContentProvider(new MyContentProvider());
> >  viewer.setLabelProvider(new MyLabelProvider());
> >  viewer.setLayoutAlgorithm(new 
> > DirectedGraphLayoutAlgorithm(SWT.VERTICAL));
> >  viewer.setConnectionStyle(ZestStyles.CONNECTIONS_DIRECTED);
> >
> > On a related note, can I use the SpringLayout for such a layout, too? 
> > It seems to randomly distribute the nodes; I'd like to have it loosely 
> > from top to bottom. Can this be done?
> >
> > Thanks.
> >
> > Philip