src/webui/app/frameworks/roles-tree.html

<ul ng-class="node.path ? 'tree' : 'tree-root'">
  <li ng-repeat="node in node.children">
    <div ng-if="node.children.length == 0" class="tree-leaf">
      {{ node.name }}
    </div>

    <div ng-if="node.children.length > 0" ng-click="toggle(node.path)" ng-class="visible[node.path] ? 'tree-expanded': 'tree-collapsed'">
      <div class="tree-internal">
        {{ node.name }}
      </div>
    </div>

    <ng-include ng-if="node.children.length > 0 && visible[node.path]" src="'app/frameworks/roles-tree.html'">
    </ng-include>
  </li>
</ul>