title: SAPUI5 - How do I disable text input in DateRangeSelection
body: <p>I need to completely disable text entry on a DateRangeSelection, so that only the calendar selection can be accepted..</p>
  
  <p>I can the disable text input for a DatePicker component with... </p>
  
  <pre><code>view.byId("__reportDate")._bMobile = true;
  </code></pre>
  
  <p>Unfortunately this doesn't work for a DateRangeSelection.</p>
  
  <p>Is there anything else I can try?</p>