Bug 41443 overview ruler not working
smoke test for 20030812 The overview ruler in the Java editor does not work when starting with a fresh workspace as described in the smoke test scenario.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
fSourceViewerDecorationSupport= new SourceViewerDecorationSupport(viewer, fOverviewRuler, fAnnotationAccess, sharedColors);
		configureSourceViewerDecorationSupport();
		
		return viewer;
	}
	
	public final ISourceViewer getViewer() {
		return getSourceViewer();
	}
	
	/*
	 * @see AbstractTextEditor#createSourceViewer(Composite, IVerticalRuler, int)
	 */
	protected ISourceViewer createJavaSourceViewer(Composite parent, IVerticalRuler verticalRuler, IOverviewRuler overviewRuler, boolean isOverviewRulerVisible, int styles) {
			return new JavaSourceViewer(parent, verticalRuler, fOverviewRuler, isOverviewRulerVisible(), styles);
	}
	
	/*
	 * @see AbstractTextEditor#affectsTextPresentation(PropertyChangeEvent)
	 */
	protected boolean affectsTextPresentation(PropertyChangeEvent event) {
		JavaTextTools textTools= JavaPlugin.getDefault().getJavaTextTools();
		return textTools.affectsBehavior(event);
	}
		
	/**
	 * Sets the outliner's context menu ID.
	 */
	protected void setOutlinerContextMenuId(String menuId) {