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
Object[] listeners = fReconcilingListeners.getListeners();
		for (int i = 0, length= listeners.length; i < length; ++i)
			((IJavaReconcilingListener)listeners[i]).aboutToBeReconciled();
	}
	
	/*
	 * @see org.eclipse.jdt.internal.ui.text.java.IJavaReconcilingListener#reconciled(CompilationUnit, boolean, IProgressMonitor)
	 * @since 3.0
	 */
	public void reconciled(CompilationUnit ast, boolean forced, IProgressMonitor progressMonitor) {
		
		JavaPlugin.getDefault().getASTProvider().reconciled(ast, getInputJavaElement());
		
		
		Object[] listeners = fReconcilingListeners.getListeners();
		for (int i = 0, length= listeners.length; i < length; ++i)
			((IJavaReconcilingListener)listeners[i]).reconciled(ast, forced, progressMonitor);
		
		if (!forced && !progressMonitor.isCanceled()) {
			Shell shell= getSite().getShell();
			if (shell != null && !shell.isDisposed()) {
				shell.getDisplay().asyncExec(new Runnable() {
					public void run() {
						selectionChanged();
					}
				});
			}
		}