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
if (textWidget == null)
				return;
				
			try {
				ISourceRange range= null;
				if (reference instanceof ILocalVariable) {
					IJavaElement je= ((ILocalVariable)reference).getParent();
					if (je instanceof ISourceReference)
						range= ((ISourceReference)je).getSourceRange();
				} else
					range= reference.getSourceRange();
				
				if (range == null)
					return;
				
				int offset= range.getOffset();
				int length= range.getLength();
				
				if (offset < 0 || length < 0)
					return;
				
				setHighlightRange(offset, length, moveCursor);
				if (!moveCursor)
					return;
											
				offset= -1;
				length= -1;
				
				if (reference instanceof IMember) {
					range= ((IMember) reference).getNameRange();