访问Ext.Panel内部的标题栏

Question

如何访问或引用TitleBar

中的Ext.Panel组件

代码

Ext.define('appv.view.ContactInfoPanel',{

    extend:'Ext.Panel',
    xtype:'contactinfopanel',



    requires: [ 'Ext.TitleBar','contactapp.view.ContactInfo'],
    config:{

        layout:'vbox',

        items:[{

            xtype: 'titlebar',
                height:'65px',
                center:true


        },{

            xtype:'contactinfo',

        }]


    },
    initialize:function(){


   // Here i want to access the TitleBar and set its title dynamically 





    }





  });

Answer 1

使用ComponentQuery选择器：

var bar = this.down('titlebar'); // Get child item at any depth by xtype