title: CheckBox dropdownlist with grouping in JSF
body: <p>I need to have a checkbox dropdown list which is grouped and the group header should also be selectable. If u select the group header all the children under the group should be selected. I tried using the jquery ui dropdownchecklist with grouping but the group header was non selectable for it. Check out the image link below</p>
  
  <p><img src="https://i.stack.imgur.com/6MUJm.jpg" alt="http://i.stack.imgur.com/wbD7L.jpg"></p>
  
  <p>As u see, 'Timesheet' is non selectable. I need 'Timesheet' and 'Supplementary timesheet' to have a checkbox and if u click on it, all its children must be selected.</p>