<ul ng-if="$ctrl.items">
    <li ng-repeat="item in $ctrl.items">
        <vn-treeview-child item="item" ng-class="{expanded: item.active}"
            ng-click="$ctrl.treeview.onToggle($event, item)">
        </vn-treeview-child>
        <vn-treeview-childs
            items="item.childs">
        </vn-treeview-childs>
    </li>
</ul>