openmct/platform/commonUI/general/res/templates/tree-item.html

<span ng-controller="ToggleController as toggle">
<span class="tree-item menus-to-left" ng-controller="TreeNodeController">
	<span class='ui-symbol view-control'
          ng-click="toggle.toggle()"
          ng-if="model.composition !== undefined">
        {{toggle.isActive() ? "v" : ">"}}
    </span>
    <mct-representation key="'label'"
                        mct-object="domainObject"
                        parameters="parameters"
                        ng-click="parameters.callback(domainObject)"
                        ng-class="{selected: node.isSelected}">
    </mct-representation>
</span>
<span class="tree-item-subtree"
      ng-show="toggle.isActive()"
      ng-if="model.composition !== undefined">
    <mct-representation key="'tree'"
                        parameters="parameters"
                        mct-object="node.domainObject">
    </mct-representation>
</span>
</span>