Bug 66923 [typing]Can delete word (Ctrl-Backspace) on read only file
When you open read-only java file, all editing functions are disabled except deleting with Ctrl-Backspace and Ctrl-Del, then it is imposible to save this file. On simple text file it works ok - it blocks all edditing functions (including Ctrl-Backspace). I am using build 200406111814
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/JavaEditor.java
*/
	private boolean fMarkMethodExitPoints;
	/**
	 * 
	 */
	private ISelection fForcedMarkOccurrencesSelection;
	/**
	 * The internal shell activation listener for updating occurrences.
	 * @since 3.0
	 */
	private ActivationListener fActivationListener= new ActivationListener();
	private ISelectionListenerWithAST fPostSelectionListenerWithAST;
	private OccurrencesFinderJob fOccurrencesFinderJob;
	
	private OccurrencesFinderJobCanceler fOccurrencesFinderJobCanceler;
	/** 
	 * This editor's projection support 
	 * @since 3.0
	 */
	private ProjectionSupport fProjectionSupport;
	/** 
	 * This editor's projection model updater 
	 * @since 3.0
	 */
	private IJavaFoldingStructureProvider fProjectionModelUpdater;
	/**
	 * The override and implements indicator manager for this editor.
	 * @since 3.0
	 */
	protected OverrideIndicatorManager fOverrideIndicatorManager;