title: CKEDITOR READONLY enable other buttons
body: <p>I have a problem.
  When I make the editor 'readonly' some of the buttons (copy, preview, full screen) stay enabled.</p>
  
  <ul>
  <li><p>Normal
  <a href="https://i.stack.imgur.com/dmVmY.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dmVmY.png" alt="enter image description here"></a></p></li>
  <li><p>Select some text
  <a href="https://i.stack.imgur.com/88jkV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/88jkV.png" alt="enter image description here"></a></p></li>
  </ul>
  
  <p>How I can enabled other buttons when I select the text? (for example enabled button 'BGColor')</p>