title: Disable/Enable click on dashboard sidebar in shiny
body: <p>Is there a way by which I can disable/enable click on dashboard sidebar so as to prevent the user from navigating to a different view in shiny?.</p>
  
  <p>I came across this solution "<a href="https://stackoverflow.com/questions/31305930/disabling-enabling-sidebar-from-server-side">disabling/enabling sidebar from server side</a>" but all it does is collapse/un-collapse the sidebar.</p>
  
  <p>But I am looking for some solution by which I can enable/disable the click on it ,so as to have more control over when to allow access to the users to navigate to a different view.</p>
  
  <p>One use case is: If I want user to first fill all the inputs on the first page before he/she can navigate to a different section.</p>