Hi, thank you all for your tips, I managed
to solve this one by overriding the tabnavigator by making some changes to the code
posted by Manish earlier:
You'll have to extend the TabNavigator and override the selectedIndex
setter.
<!-- MyTabNavigator.mxml -->
<?xml version="1.0"?>
<mx:TabNavigator xmlns:mx="http://www.macromedia.com/2003/mxml"
xmlns="*">
<mx:Script>
var savedSelectedIndex:Number;
public function set
selectedIndex(value:Number):Void
{
savedSelectedIndex
= value;
tabBar.selectedIndex = super.selectedIndex;
confirm("Are
you really, really sure?");
}
</mx:Script>
</mx:TabNavigator>
In your alert handler you set the selectedIndex to
the
savedSelectedIndex (if the user clicked OK).
-Mika
From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of Doodi, Hari - BLS CTR
Sent: 21. kesäkuuta 2005 17:17
To: 'flexcoders@yahoogroups.com'
Subject: RE: [flexcoders]
TabNavigator gimmick
Hi All,
I have same
situations and unable to resolve.
Can we request
macromedia development/research group to provide a
new event called "changing" to
TabNavigator controls which should fire
before "change" event and provide
mechanism either go ahead or revert the
navigation. This way we can have total control of
navigation and program
logic can decide whether to allow the user to
navigate to next/other tab or
not.
Thanks!
Hari
-----Original Message-----
From: flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.com]
On
Behalf Of Mika Kiljunen
Sent: Tuesday, June 21, 2005 3:27 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] TabNavigator gimmick
Thanks Scott, but the problem is : "Unknown
attribute 'click' on
mx.containers.TabNavigator".
So there is no click event on TabNavigator, I
tried placing it on
change-event but it does not affect it if set
selectedIndex=x, since change
seems to be fired before the change actually
occurs, so tabnavigator is
going to change the tab after the event is handled
anyway (so if I set it on
change to something, the tabnavigator sets it
anyway to what it was supposed
to set to when the tab is clicked)... :[
-Mika
-----Original Message-----
From: flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.com]
On
Behalf Of Scott Barnes
Sent: 21. kesäkuuta 2005 10:11
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] TabNavigator gimmick
subscribe to the TabNavigators "click"
event. From here, execute a
validation routine based on the last
known tab clicked (ie default
is tab0, then if user clicks tab1, then update a
var to indicate
such).
Validate that tab, if it fails, then simply fire
an exception routine
(ie popup) and selectedIndex = failedTab.
The end-user may experience a "flicker"
between the two tabs based on
how long it takes to compute the validation
routine.
this is the "quick and easy" way. If you
want to prevent a user from
accessing the tab, then you may have to extend the
TabNavigator and
over-ride the various methods associated to that
class. I can't
remember off the top of my head what the
TabNavigator uses in terms of
click, but i'd bet the farm it uses SimpleButton.
I'd love to post the code for code, line by line
here but i'm a bit
swamped at present but the above is based on
theory (especially if it
works similiar to the Accordion)
On 6/21/05, Mika Kiljunen <[EMAIL PROTECTED]> wrote:
>
>
>
> Hi,
>
> I could use some help with tabnavigator. I
have a TabNavigator that has 3
> tabs on it. When the user clicks tab one and
edits some data on the tab
view
> AND then clicks tab two, I should be able to
stop this and go back to tab
> one and force the user to save data or at
least to warn to save the edited
> data before going to tab two. Is there a way
to do this? So basically I
need
> a way to catch the user's click on tab two
(haven't figured out where) and
> then "cancel" the tab change
event...
>
>
>
> -Mika
> ________________________________
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--
Regards,
Scott Barnes
http://www.mossyblog.com
http://www.flexcoder.com
("Waiting for FLEX NCL to arrive")
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