Ext.define("Test.view.Main", {
    extend: 'Ext.tab.Panel',
    config: {
        tabBarPosition: 'bottom',

        items: [ ]
    },

    constructor : function(){
        this.callParent(arguments);
        var store = Ext.create('Ext.data.Store',{
                data :[
                    {title : 'One'},
                    {title : 'Two'},
                    {title : 'Three'}
                ]
            }),
            firstList = Ext.create('Ext.List',{
                title : 'tab1',
                store : store,
                itemTpl : '{title}',
                onItemDisclosure : function(){
                    store.add({title : 'Four'});
                }
            }),

            secondList = Ext.create('Ext.List',{
                title : 'tab2' ,
                store : store,
                itemTpl : '{title}'

            }),

             thirdList = Ext.create('Ext.List',{
                title : 'tab3',
                store : store,
                itemTpl : '{title}'

            });

        this.add([
            firstList,
            secondList,
            thirdList
        ]) ;
    }
});

storeEventHooks: {
    beforeload: 'onBeforeLoad',
    load: 'onLoad',
    refresh: 'refresh',
    addrecords: 'onStoreAdd',
    removerecords: 'onStoreRemove',
    updaterecord: 'onStoreUpdate'
}