title: Show new view in Ext.tab.Panel
body: <p>I have Ext.tab.Panel with few items. One item is login panel of type Ext.form.Panel.From controller I call Ext.Ajax.request to login. From callback method i would like to show new view(logged in). I mean on the same tab replace tab content login form view with new view (Ext.List/Ext.Panel)</p>
  
  <p>Can someone guide me how to make it? I did't found correct functions in Ext.tab.Panel docs.
  Thanks</p>