Bug 28698 Ctrl+O (show outline) does not work if the file being shown in the editor is read only
M4 The summary tells all. Works if the file is not read only. Is this by design?
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
/*
		 * @see IPropertyChangeListener#propertyChange(PropertyChangeEvent)
		 */
		public void propertyChange(org.eclipse.core.runtime.Preferences.PropertyChangeEvent event) {
			handlePreferencePropertyChanged(event);
		}
	}
	
	
	private final static String CODE_FORMATTER_TAB_SIZE= JavaCore.FORMATTER_TAB_SIZE;
	
	private final static String MATCHING_BRACKETS=  PreferenceConstants.EDITOR_MATCHING_BRACKETS;
	
	private final static String MATCHING_BRACKETS_COLOR=  PreferenceConstants.EDITOR_MATCHING_BRACKETS_COLOR;
	
	private final static String CURRENT_LINE= PreferenceConstants.EDITOR_CURRENT_LINE;
	
	private final static String CURRENT_LINE_COLOR= PreferenceConstants.EDITOR_CURRENT_LINE_COLOR;
	
	private final static String PRINT_MARGIN= PreferenceConstants.EDITOR_PRINT_MARGIN;
	
	private final static String PRINT_MARGIN_COLOR= PreferenceConstants.EDITOR_PRINT_MARGIN_COLOR;