ext文本框双击编辑功能

{
	header: '双击编辑',
	align: 'center',
	dataIndex: 'iqty',
	width:200,
	flex:1,
	renderer: function(value){
		if(value==='' || value===null)
			return '点击输入盘点数量';
		return Ext.util.Format.number(value,'0.00');
	},
	editor:{
		xtype: 'numberfield',
		allowBlank: false,
		valid:true,
		minValue:0,
		decimalPrecision: 4,
		nanText:'文本',
		validator: function(value){
			var me = this;
			if(value){
				if(!me.valid){
					return me.invalidText;
				}else {
					return true;
				}
			} else {
				return '提示';
			}
		},
		listeners: {
			pecialkey: function(th, e, eOpts){
				if (e.getKey() == e.ENTER) {
					e.keyCode = Ext.EventObject.TAB;
				}
			}
		}
	}
}