GMF display diagram example

Question

How can I display a GMF diagram, with the file format "*.ecorediag" in Eclipse in a View? The diagram should not be editable.

Is there a simple sample view that loads a diagram from say "/home/diagrams/test.ecorediag"

Answer 1

The GMF diagrams (including ecorediag) are rendered on the editor with the help of "org.eclipse.gmf.runtime.diagram.ui.parts.DiagramGraphicalViewer".

So the bare minimum code to make this work

DiagramGraphicalViewer viewer = new DiagramGraphicalViewer();
viewer.createControl(composite);

RootEditPart root = EditPartService.getInstance().createRootEditPart(
                diagram);
viewer.setRootEditPart(root);
viewer.setEditPartFactory(new EcoreEditPartProvider());

viewer.getControl().setBackground(ColorConstants.listBackground);

viewer.setContents(diagram);