//turn projection mode on
ProjectionViewer viewer =(ProjectionViewer)getSourceViewer();
projectionSupport = new ProjectionSupport(viewer,getAnnotationAccess(),getSharedColors());
projectionSupport.install();
viewer.doOperation(ProjectionViewer.TOGGLE);
}
@Override
protected ISourceViewer createSourceViewer(Composite parent,
IVerticalRuler ruler, int styles) {