ambari-web/app/templates/main.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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
}}
{{#if isServerClientVersionMismatch}}
  <h3 id="version-mismatch-title">{{t app.versionMismatchAlert.title}}</h3>
  <div class="alert alert-danger">
    {{{versionConflictAlertBody}}}
  </div>
{{else}}
  {{#unless isClusterDataLoaded}}
    <h2>{{t common.loading.eclipses}}</h2>
    <div class="progress">
      <div class="progress-bar progress-bar-striped active" {{QAAttr "main-progress-bar"}} {{bindAttr style="controller.clusterDataLoadedPercent"}}></div>
    </div>
  {{/unless}}
  {{#if isClusterDataLoaded}}
    {{outlet}}
  {{/if}}
{{/if}}