[news.eclipse.tools.gef] Added new figures to the diagram.

["slam" <jsk_lam@xxxxxxxxxxx>]

Hi,

I have a model which contains a hierarchy structure of nodes.  Everything
works fine if I create
all the node objects in the method
AbstractEditorPage#createGraphicalViewer()  and the GEF
EditPartFactory#createEditorPart() will eventually be invoked to create the
edit part for all the
nodes.

But the diagram is so complex, I would like to only create the first level
of nodes and let the
user click on a specific node and expand it to show all the children nodes.
In this case, I do
not create all the nodes in the AbstractEditorPage#createGraphicalViewer(),
and only add
those children nodes to the diagram when the parent node is expanded.

I only call GraphicalViewer.setContents(diagram) in
AbstractEditorPage#createGraphicalViewer()
when the editor page is first loaded. How do I added those new children
nodes to my diagram
and invoke the EditPartFactory#createEditorPart() to create the
editparts/figures for those new
nodes?  By the way, I am not using any palette at all.

Thanks
slam