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();}