Extjs3 动态panel

1 this.dynamicPanel = new Ext.Panel({
2             region: ‘center‘,
3             frame: false,
4             border: false,
5             layout:‘fit‘,
6             items:[
7                 this.createDynamicPanel(‘Retailers‘)
8             ]
9         });

 1 createDynamicPanel:function(panelType){
 2         if(panelType==‘Retailers‘){
 3             return new Ext.ux.RetailersPanel();
 4         }
 5     },
 6     onRetailersFire:function(){
 7         var dynamicPanel = this.dynamicPanel;
 8         dynamicPanel.removeAll();    //移除panel中的所有元素
 9         dynamicPanel.add(this.createDynamicPanel(‘Retailers‘));
10         dynamicPanel.doLayout();    //重新渲染panel(Extjs4中直接添加即可,无需重新渲染)
11     }