头痛的EXT girdEditor问题

Question

var cm = new Ext.grid.ColumnModel([{
           id:'common',
           header: "Common Name",
           dataIndex: 'common',
           width: 220,
           editor: new fm.TextField({
               allowBlank: false,
                listeners:{  
                 //我想在这里添加一个事件，让这个TextField显示的时候根据显示值来决定这个TextField是否可以
                 //编辑，也就是说Grid的每列的每个cell因为值不同而决定是否可编辑。帮忙看看！
                } 
    })
        },{
           header: "Light",
           dataIndex: 'light',
           width: 130,
           editor: new Ext.form.ComboBox({
               typeAhead: true,
               triggerAction: 'all',
               transform:'light',
               lazyRender:true,
               listClass: 'x-combo-list-small'
            })
        },{
           header: "Price",
           dataIndex: 'price',
           width: 70,
           align: 'right',
           renderer: 'usMoney',
           editor: new fm.NumberField({
               allowBlank: false,
               allowNegative: false,
               maxValue: 100000
           })
        },{
           header: "Available",
           dataIndex: 'availDate',
           width: 95,
           renderer: formatDate,
           editor: new fm.DateField({
                format: 'm/d/y',
                minValue: '01/01/06',
                disabledDays: [0, 6],
                disabledDaysText: 'Plants are not available on the weekends'
            })
        }
    ]);



问题：
      {
           id:'common',
           header: "Common Name",
           dataIndex: 'common',
           width: 220,
           editor: new fm.TextField({
               allowBlank: false,
                listeners:{
               
                 //我想在这里添加一个事件，让这个TextField显示的时候根据显示值来决定这个TextField是否可以
                 //编辑，也就是说Grid的每列的每个cell因为值不同而决定是否可编辑。帮忙看看！
                
                } 
    })
        }

 

Answer 1

[code="java"]var store = new Ext.data.SimpleStore({
data : [['lcs' , 28 , 'dpc'],['mlx' , 27 , 'hfzg']],
fields : ["name" , "age" , "unit"]
});
isCellEditable = function(c,r){
var record = store.getAt(r);
if(c!=1)return true;
return record.get("age") >= 28;
};
var cm = new Ext.grid.ColumnModel({
columns : [{
header : "姓名",
dataIndex : "name",
editor : new Ext.form.TextField()

    },{
        header : "年龄",
        dataIndex : "age",
        editor : new Ext.form.TextField(),
        renderer : function(value, metadata , record , r , c , store){
            return isCellEditable(c,r)?value:String.format('<div style="width:100%;background:#ccc;">{0}</div>',value);
        }
    },{
        header : "单位",
        dataIndex : "unit",
        editor : new Ext.form.TextField()
    }],
    isCellEditable : isCellEditable
});

var grid = new Ext.grid.EditorGridPanel({
    renderTo : Ext.getBody(),
    width : 300,
    height : 260,
    cm : cm,
    store : store,
    title : "Info"
});[/code]

作个参考吧