app/scripts/viewmodel/viewmodel.directive.html
<div ng-hide='vm.mobile' class="interface-visible interface-clickable ewa-dropdown">
<a data-toggle="dropdown" href="#">{{ vm.viewmodel }} <b class="caret"></b></a>
<ul class="dropdown-menu" role="menu">
<li ng-repeat="choice in vm.data.viewmodels">
<a ng-click=vm.selectViewmodel(choice)>{{choice}}</a>
</li>
</ul>
</div>