Ext下拉树组件

http://www.2cto.com/kf/201206/135007.html   /**  *下拉树类(Jelly)  */  Ext.define('Redm.commons.TreeCombox', {      extend: 'Ext.form.field.Picker',      xtype: 'treecombox',      triggerCls: Ext.baseCSSP

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