Re: [flexcoders] Re: setting conditional "enabled" with AS

[Matthew Shirey]

It seems that you want to know if there's a way to create the same
simple live databinding in AS as you did in MXML.  I too would
like to know how to do this if its possible.  In mxml you had the
enabled property bound to the results of a conditional evaluation. i.e.
enabled="{x == y}"  I do this a lot too.  If the values of x
or y change the enabled state is automatically updated.  So far
anything I've seen in AS is much less simple.

-- MatthewOn 4/19/05, joao_m_fernandes <[EMAIL PROTECTED]> wrote:
Thanks, It worked but I was hoping that we could define the same logic withAS as we do in MXML. I see we can't.Joćo Fernandes--- In flexcoders@yahoogroups.com
, Joe Berkovitz <[EMAIL PROTECTED]> wrote:> 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]> >>> >>Office:  +44 (0)131 338 6108> >>
> >>This e-mail and any associated attachments transmitted with it may> >> > contain> >> >>confidential information and must not be copied, or disclosed, or> >
> > used by> >> >>anyone other than the intended recipient(s). If you are not theintended> >>recipient(s) please destroy this e-mail, and any copies of it,> >
> > immediately.> >> >>> >>Please also note that while software systems have been used to try> >> > to ensure> >> >>that this e-mail has been swept for viruses, iteration::two do not
> >> > accept> >> >>responsibility for any damage or loss caused in respect of any viruses> >>transmitted by the e-mail. Please ensure your own checks arecarried out
> >>before any attachments are opened.> >>> >>> >>-----Original Message-----> >>From: flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.com] 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> >> >> >> >> >> >> >> >> >Yahoo! Groups Links<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/flexcoders/<*> To unsubscribe from this group, send an email to:    
[EMAIL PROTECTED]<*> Your use of Yahoo! Groups is subject to:    http://docs.yahoo.com/info/terms/







Yahoo! Groups Links

To visit your group on the web, go to:http://groups.yahoo.com/group/flexcoders/ 
To unsubscribe from this group, send an email to:[EMAIL PROTECTED] 
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.