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();
}