Joao,
The trouble here is that you are only evaluating the condition once,
when you create the button.
You will need to add a listener to the dataProvider(s) that causes the
condition to be reevaluated every time the data changes. As in:
btn = ctrlbar.createChild(mx.controls.Button,undefined,{label:label});
someList.dataProvider.addEventListener
('modelChanged',
mx.utils.Delegate.create(this, checkButtonEnable));
private function checkButtonEnable():Void
{
btn.enabled = (somelist.dataProvider.length == 3);
}
joao_m_fernandes wrote:
>
> Ali,
>
> I'm creating a button like this:
> <mx:Script>
> <![CDATA[
> var btn;
> function create_btn_save(label,funct){
> ctrlbar.destroyAllChildren();
> btn = ctrlbar.createChild(mx.controls.Button,undefined,{label:label});
> btn.addEventListener('click',mx.utils.Delegate.create(this,funct));
> btn.enabled = (somelist.dataProvider.length == 3 &&
> otherlist.dataProvider.length == 3);
> }
>
> ]]>
>
> I get the button created but the enabled property don't update when
> the condition is fullfilled.
>
> Joćo Fernandes
>
> --- In flexcoders@yahoogroups.com, "Alistair McLeod" <[EMAIL PROTECTED]>
> wrote:
>
>>Hi,
>>
>><mx:Button id="myButton"/>
>>
>>and
>>
>>Private function setButtonState() : Void
>>{
>> myButton.enabled = ( someval == otherval );
>>}
>>
>>
>>Its all in the docs....
>>
>>Ali
>>
>>--
>>Alistair McLeod
>>Development Director
>>iteration::two
>>[EMAIL PROTECTED]
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>>-----Original Message-----
>>From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On
>>Behalf Of joao_m_fernandes
>>Sent: 19 April 2005 18:06
>>To: flexcoders@yahoogroups.com
>>Subject: [flexcoders] setting conditional "enabled" with AS
>>
>>
>>
>>Hi there,
>>
>>This may be a basic question.
>>
>>I know that if I use <mx:Button enabled="{someval == otherval}"/> My
>
> button
>
>>will be enabled whenever someval = otherval is true.
>>
>>How can I set this kind of conditional values to a button created with
>>ActionScript ?
>>
>>Thanks,
>>
>>Joćo Fernandes
>>
>>
>>
>>
>>
>>
>>Yahoo! Groups Links
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
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>
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