Ext.define('erp.view.ma.PowerSet',{ extend: 'Ext.Viewport', layout: 'fit', hideBorders: true, initComponent : function(){ var me = this; Ext.apply(me, { items: [{ layout: 'anchor', items: [{ xtype: 'grouppower', anchor: '100% 100%' }] }] }); me.callParent(arguments); } });