/**
  * Convert the cell to edit mode.
  *
  * @param context the {@link Context} of the cell
  * @param parent the parent element
  * @param value the current value
  */
 protected void edit(Context context, Element parent, String value) {
   setValue(context, parent, value);
   TextAreaElement input = getInputElement(parent);
   input.focus();
   input.select();
 }