Bug 28582 Quickfix icon hides the error icon in editor left ruler [quick fix]
Build 20021216 In presence of problems, one cannot see an error icon in the left ruler, since it get overlapped completely with the quickfix icon. The only error indication is the underlining in the code itself.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider.java
private final static String HANDLE_TEMPORARY_PROBLEMS= PreferenceConstants.EDITOR_EVALUTE_TEMPORARY_PROBLEMS;
	
	
	
	private IBufferFactory fBufferFactory= new BufferFactory();
	
	private boolean fIsAboutToSave= false;
	
	private ISavePolicy fSavePolicy;
	
	private IPropertyChangeListener fPropertyListener;
	
	
	private GlobalAnnotationModelListener fGlobalAnnotationModelListener;	
	
	/**
	 * Constructor
	 */
	public CompilationUnitDocumentProvider() {
		fPropertyListener= new IPropertyChangeListener() {
			public void propertyChange(PropertyChangeEvent event) {
				if (HANDLE_TEMPORARY_PROBLEMS.equals(event.getProperty()))
					enableHandlingTemporaryProblems();
			}
		};
		
		fGlobalAnnotationModelListener= new GlobalAnnotationModelListener();
		
		JavaPlugin.getDefault().getPreferenceStore().addPropertyChangeListener(fPropertyListener);
	}