ambari-web/app/templates/main/menu_item.hbs

{{!
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*     http://www.apache.org/licenses/LICENSE-2.0
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}}


<a href="#" {{action goToSection view.content.routing target="view"}} {{bindAttr class="view.content.isView:views-button-container"}}>
  {{{unbound view.content.label}}}
</a>

<!--dropdown menu for the items had dropdowns-->
{{#if view.isServicesItem}}
  {{view App.TopNavServiceMenuView}}
{{/if}}
{{#if view.isAdminItem}}
  <ul class="top-nav-dropdown-menu">
    {{#each category in view.dropdownCategories}}
      {{#view view.AdminDropdownItemView itemBinding="category.name" }}
        <a href="#" {{action "goToCategory" category.url target="view"}}>{{category.label}}</a>
      {{/view}}
    {{/each}}
  </ul>
{{/if}}
{{#if view.isViewsItem}}
  <ul class="top-nav-dropdown-menu">
    {{#if view.content.views.length}}
      {{#each category in view.content.views}}
        <li><a href="#" {{action "setView" category target="App.router.mainViewsController"}}>{{category.label}}</a></li>
      {{/each}}
    {{else}}
      <li class="disabled"><a href="javascript:void(null);">{{t menu.item.views.noViews}}</a></li>
    {{/if}}
  </ul>
{{/if}}