ambari/ambari-web/app/controllers/main.js

/**
 * 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.
 */

var App = require('app');
require('models/background_operation');

App.MainController = Em.Controller.extend({
  name: 'mainController',

  updateTitle: function(){
    var name = App.router.get('clusterController.clusterName');
    if (name) {
      name = name.length > 13 ? name.substr(0, 10) + "..." : name;
    } else {
      name = Em.I18n.t('common.loading');
    }
    $('title').text('Ambari - ' + name);
  }.observes('App.router.clusterController.clusterName'),

  isClusterDataLoaded: function(){
    return App.router.get('clusterController.isLoaded');
  }.property('App.router.clusterController.isLoaded'),

  clusterDataLoadedPercent: function(){
    return App.router.get('clusterController.clusterDataLoadedPercent');
  }.property('App.router.clusterController.clusterDataLoadedPercent'),
  /**
   * run all processes and cluster's data loading
   */
  initialize: function(){
    App.router.get('clusterController').loadClusterData();
    this.startPolling();
  },

  dataLoading: function () {
    var self = this;
    var dfd = $.Deferred();
    if (App.router.get('clusterController.isLoaded')) {
      dfd.resolve();
    } else {
      var interval = setInterval(function () {
        if (self.get('isClusterDataLoaded')) {
          dfd.resolve();
          clearInterval(interval);
        }
      }, 50);
    }
    return dfd.promise();
  },

  startPolling: function(){
    App.router.get('updateController').set('isWorking', true);
    App.router.get('backgroundOperationsController').set('isWorking', true);
    App.router.get('clusterController').set('isWorking', true);
  },
  stopPolling: function(){
    App.router.get('updateController').set('isWorking', false);
    App.router.get('backgroundOperationsController').set('isWorking', false);
    App.router.get('clusterController').set('isWorking', false);
  },

  reloadTimeOut: null,

  pageReload: function () {

    clearTimeout(this.get("reloadTimeOut"));

    this.set('reloadTimeOut',
        setTimeout(function () {
          if (App.clusterStatus.get('isInstalled')) {
            location.reload();
          }
        }, App.pageReloadTime)
    );
  }.observes("App.router.location.lastSetURL", "App.clusterStatus.isInstalled")

})