branch-1.2/ambari-web/app/views/main/charts/heatmap/heatmap_rack.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');

App.MainChartsHeatmapRackView = Em.View.extend({
  templateName: require('templates/main/charts/heatmap/heatmap_rack'),
  classNames: ['rack'],
  classNameBindings: ['visualSchema'],
  /**
   * this is the class for binding attribute to hosts block
   * @private
   */
  hostsBlockClass:"hosts clearfix",
  heatmapIsOpened: 1,

  /** rack status block class */
  statusIndicator:'statusIndicator',

  toggleRack: function(){
    var newHeatmapStatus = 1 - this.get('heatmapIsOpened');
    this.set('heatmapIsOpened', newHeatmapStatus);
  },

  /**
   * change toggler class, depends on heatmapIsOpened property
   * @this App.MainChartsHeatmapRackView
   */
  heatmapTogglerClass:function () {
    if (this.heatmapIsOpened) {
      return "isActive"
    }
    return "";
  }.property("heatmapIsOpened"),
  
  /**
   * Provides the CSS style for an individual host.
   * This can be used as the 'style' attribute of element.
   */
  hostCssStyle: function(){
    var rack = this.get('rack');
    var widthPercent = 100;
    var hostCount = rack.get('hosts.length');
    if(hostCount<11){
      widthPercent = (100/hostCount)-0.5;
    }else{
      widthPercent = 10; // max out at 10%
    }
    return "width:"+widthPercent+"%;float:left;";
  }.property('rack')
});