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/CompilationUnitEditor.java
/**
	 * Removes the given listener.
	 * Has no effect if an identical listener was not already registered.
	 * 
	 * @param listener	the reconcile listener to be removed
	 * @since 3.0
	 */
	final void removeReconcileListener(IJavaReconcilingListener listener) {
		synchronized (fReconcilingListeners) {
			fReconcilingListeners.remove(listener);
		}
	}
		
	protected void updateStateDependentActions() {
		super.updateStateDependentActions();
		fGenerateActionGroup.editorStateChanged();
	}
	
	/*
	 * @see AbstractTextEditor#rememberSelection()
	 */
	protected void rememberSelection() {
		fRememberedSelection.remember();
	}
	
	/*
	 * @see AbstractTextEditor#restoreSelection()
	 */
	protected void restoreSelection() {
		fRememberedSelection.restore();