title: javafx html editor
body: <p>actually i'm looking for something very similar to this thread:</p>
  
  <p><a href="https://stackoverflow.com/questions/10075841/how-to-hide-the-controls-of-htmleditor">How to hide the controls of HTMLEditor?</a></p>
  
  <p>so basically i try to add a custom button to the javafx html editor but with the difference that it's implemented through FXML. </p>
  
  <p><strong>So my question is:</strong></p>
  
  <p>Is there a "work-around" to add custom buttons to the html-editor when it's implemented through FXML? </p>