Thank you Alex and Amy for clarification.

Angelo


________________________________
From: Alex Harui <[email protected]>
To: "[email protected]" <[email protected]>
Sent: Fri, 16 April, 2010 22:51:20
Subject: Re: [flexcoders] Re: Reuse a LabelFunction

  
Amy is saying you could write your function like this:

private function labelFunctionTest( itm:Object, col:DataGridColumn) :String 
{
    return df.format(itm[ col.dataField] );
}

Which is correct and probably the easiest way to go.  If you want to subclass 
you would do something like this:

 public class AngeloDataGridColum n extends DataGridColumn
 {
     public function AngeloDataGridColum n()
     {
         labelFunction = labelFunctionTest;
     }

     private function labelFunctionTest( item:Object, col:DataGridColumn) 
:String
     {
         return owner.document. df.format( item[dataField] );
     }
 }

By subclassing you don’t have to assign the labelFunctions to the columns that 
need them.

On 4/16/10 2:12 PM, "Angelo Anolin" <angelo_anolin@ yahoo.com> wrote:



>> 
>> 
>>   
>
>Hi Alex,
>> 
>>Appreciate if you could show a little example.
>> 
>>Thanks.
>> 
>>Angelo
>
>
________________________________
From:Alex Harui <aha...@adobe. com>
>To: "flexcod...@yahoogro ups.com" <flexcod...@yahoogro ups.com>
>Sent: Fri, 16 April, 2010 12:29:57
>Subject: Re: [flexcoders] Re: Reuse a LabelFunction
>
>>  
>If it were me, I would subclass DataGridColumn and add the labelfunction to 
>the subclass.  Then it has the DGC’s context like dataField to work with.
>
>
>>On 4/16/10 7:40 AM, "valdhor" <valdhorlists@ embarqmail. com> wrote:
>
>
>
>>>> 
>>>> 
>>>>   
>>
>>>>If it were me, I would use an item renderer.
>>
>>>>--- In flexcod...@yahoogro ups.com <mailto:flexcoders% 40yahoogroups. com 
>>>><mailto:flexcoders% 40yahoogroups. com> > , Angelo Anolin <angelo_anolin@ 
>>>>...> wrote:
>>>>>
>>>>> Hi Amy,
>>>>> 
>>>>> But as you can see in the function, I am specifying the Datafieldname 
>>>>> from the object which was passed.
>>>>> 
>>>>> How can I make it more generic so that I can re-use it in other datagrid 
>>>>> columns?  I hope you could provide some samples. thanks.
>>>>> 
>>>>> Angelo
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> ____________ _________ _________ __
>>>>> From: Amy <amyblankenship@ ...>
>>>>> To: flexcod...@yahoogro ups.com <mailto:flexcoders% 40yahoogroups. com 
>>>>> <mailto:flexcoders% 40yahoogroups. com> > 
>>>>> Sent: Fri, 19 March, 2010 9:13:38
>>>>> Subject: [flexcoders] Re: Reuse a LabelFunction
>>>>> 
>>>>> Â  
>>>>> 
>>>>> 
>>>>> --- In flexcod...@yahoogro ups.com, Angelo Anolin <angelo_anolin@ ...> 
>>>>> wrote:
>>>>> >
>>>>> > Hi FlexCoders,
>>>>> > 
>>>>> > I have created a labelfunction which I use in my datagrid to format the 
>>>>> > display value.
>>>>> > 
>>>>> > <mx:DateFormatter id="df" formatString= "DD/MM/YYYY" />
>>>>> > 
>>>>> > And this is the AS function
>>>>> > private function labelFunctionTest( itm:Object, col:DataGridColumn) 
>>>>> > :String
>>>>> > {
>>>>> > Â Â Â  return df.format(itm. DataFieldNamefor Col1);
>>>>> > }
>>>>> > 
>>>>> > Is there a way so that I could reuse the same label function to other 
>>>>> > datagrid columns?  As you can see from the script above, I am only 
>>>>> > using the function to Col1 for the datagrid.  How would I be able to 
>>>>> > specify the datafield if I am going to reuse the same with other 
>>>>> > datagrid columns?
>>>>> 
>>>>> That is what the DataGridColumn parameter is for. Look at its dataField 
>>>>> property.
>>>>> 
>>>>> HTH;
>>>>> 
>>>>> Amy
>>>>>
>>
>>>> 
>>>>   
>>
>>
>>
-- 
Alex Harui
Flex SDK Team
Adobe System, Inc.
http://blogs. adobe.com/ aharui
 
 


      

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