基于ExtJs在页面上window再调用Window的事件处理方法

var actInfoWindow2;
function showCallFlowInfoWindow(flowid, actId) {
  var actWindowHeight1 = window.innerHeight
  || document.documentElement.clientHeight
  || document.body.clientHeight;
  if(null != upldWin && undefined != upldWin && "" != upldWin){
    upldWin.close();
  }
  // 异常活动模型
  Ext.define('callFlowModel', {
    extend: 'Ext.data.Model',
    fields: [{name: 'instance', type: 'string'},
         {name: 'flowName', type: 'string'},
         {name: 'prjName', type: 'string'},
         {name: 'startTime',  type: 'String'}]
  });
   
  callFlowStore = Ext.create('Ext.data.Store', {
    autoLoad : true,
    model : 'callFlowModel',
    proxy : {
      type : 'ajax',
      url : 'subflow.do',
      reader : {
        type : 'json',
        root : 'callFlowList',
        totalProperty : 'total'
      }
    }, 
    listeners: { 
      'beforeload': function (store, op, options) {
        var params = { 
          //参数 
          flowId : flowid,
          id : actId
        }; 
        Ext.apply(store.proxy.extraParams, params); 
      } 
    } 
  });
   
  // 绑定数据模型flowColumns
  var callFlowColumns = [
    { text: '实例名', dataIndex: 'instance', width:174 },
    { text: '工程名', dataIndex: 'prjName',width: 174 },
    { text: '工作流名', dataIndex: 'flowName',width: 174 },
    { text: '启动时间', dataIndex: 'startTime',width: 174 }
  ];
 
  callFlowGrid = Ext.create('Ext.grid.Panel', {
    region : 'center',
    //tbar:querybar,
    id:'callFlowList',
    autoScroll : false,
    border:false,
    //columnLines : true,
    //selModel:selModel,
    //bbar : pageBar,
    columns : callFlowColumns,
    store : callFlowStore,
    loadMask : {
      msg : " 数据加载中，请稍等 "
    }
  });
   
  if (actInfoWindow2 == undefined || !actInfoWindow2.isVisible()) {
    actInfoWindow2 = Ext.create('Ext.window.Window', {
      id : 'actInfoWindow2',
      title : '活动信息详情',
      modal : true,
      closeAction : 'destroy',
      constrain : true,
      autoScroll : true,
      width : 700,
      height : actWindowHeight1 - 300,
      items : [ callFlowGrid ],
      listeners:{
         beforeclose:function(){
           actInfoWindow2.destroy();
         }
      }
    });
  }
  actInfoWindow2.show();
}
if(null != upldWin && undefined != upldWin && "" != upldWin){

  upldWin.close();
}