在Javascript中获取Tabview的标签

Question

我在页面上有一个tabview并动态添加带有javascript的标签。同时将打开的选项卡名称添加到列表（lstOpenedPages）。但是关闭一个标签，我无法从列表中获取该标签的名称。现在我想阅读tabview的剩余标签，因为我可以从列表中找到关闭的标签（lstOpenedPages）。

如何在Javascript中保留tabview的标签？

xhtml代码

<p:tabView id="tw" widgetVar="tw">  
   <p:ajax event="tabClose" listener="#{MenuBean.onTabClose}"/>
</p:tabView>

<p:menuitem value="#{itemMenu.menuAck}" 
            action="#{MenuBean.OpenPage(itemMenu.pageName)}" 
            ajax="true"
            oncomplete="handleTabViewEvent(args);" 
/>

<script type="text/javascript">
      function handleTabViewEvent(args) {
          alert('Add tab here..');
       }
</script> 

豆

public void OpenPage(String pageName) {
    lstOpenedPages.add(pageName);
}

public void onTabClose(TabCloseEvent event) {  
    FacesContext context = FacesContext.getCurrentInstance();
    TabView tw = (TabView)context.getViewRoot().findComponent("centerForm:tw");
    String s = "I must delete tab here from lstOpenedPages which closed. But event does not give me tab information. It is always null. So I must be delete from javascript";
}