public void setRedraw(boolean redraw)
	{
		// Can access protected final method getSourceViewer() from here
		((ITextViewerExtension)getSourceViewer()).setRedraw(redraw);
	}

	editor.setRedraw(false);

	// Spawn a cancellable task using our dialog as a context
	getContainer().run(true, true, new IRunnableWithProgress()
	{
		public void run(final IProgressMonitor monitor) throws InvocationTargetException
		{
			monitor.beginTask("Generating", count);

			try
			{
				// Obtain write access to document model
				editor.getDocument().modify(new IUnitOfWork.Void<XtextResource>()
				{
					public void process(XtextResource res) throws Exception
					{
						// Can make semantic changes and call monitor.worked() and monitor.isCanceled() here
					}
				});
			}
			finally
			{
				monitor.done();
			}
		}
	});

	editor.setRedraw(true);