setting radiobuttongroup id thru actionscript

[xeek]

Hi,

I am trying to create a RadioButtonGroup with 5 RadioButtons using
actionscript. However, I cannot set the id attribute of the RadioButtonGroup.
There is compile error when I try to do the followings:

var radiogroup1:mx.controls.RadioButtonGroup = new
mx.controls.RadioButtonGroup();
radiogroup1.id = "abc";
The compile error is : There is no property with the name 'id'

From the Macromedia online documentation on RadioButtonGroup, 'id' is an
required attribute for MXML syntax. If I cannot set the 'id' of the
RadioButtonGroup, then I wouldn't be able to assign the value of 'id' as the
groupName for the RadioButtons in this group.

Thanks,
Andrew

[Jason R. Weiss]

xeek wrote:

> Hi,
>
> I am trying to create a RadioButtonGroup with 5 RadioButtons using
> actionscript. However, I cannot set the id attribute of the RadioButtonGroup.
> There is compile error when I try to do the followings:
>
> var radiogroup1:mx.controls.RadioButtonGroup = new
> mx.controls.RadioButtonGroup();
> radiogroup1.id = "abc";
> The compile error is : There is no property with the name 'id'
>
> From the Macromedia online documentation on RadioButtonGroup, 'id' is an
> required attribute for MXML syntax. If I cannot set the 'id' of the
> RadioButtonGroup, then I wouldn't be able to assign the value of 'id' as the
> groupName for the RadioButtons in this group.
>
> Thanks,
> Andrew
>

Does it work if you use createClassObject instead, like this:

var rbGroup : MovieClip;
var initObj = new Object();
rbGroup = createClassObject(RadioButtonGroup, "rbGroup", 1, obj);


This is speculation, but it would give you access to the instance name
of "rbGroup" for use in your radiobutton groupName attributes.

HTH,

Jason




--
Jason Weiss
Cynergy Systems, Inc.
Macromedia Flex Alliance Partner
[url]http://www.cynergysystems.com[/url]

Email: [email]jason.weiss@cynergysystems.com[/email]
Office: 866-CYNERGY
Mobile: 1.832.444.2246

[xeek]

Hi,

I assume the last parameter to createClassObject is initObj instead of obj.
I have tried your example but it doesn't work, I am not able to get the id
attribute from rbGroup.

I have also tried the following example but it doesn't work either:

var groupA = createClassObject(mx.controls.RadioButtonGroup,"gr oupA",1,{});
trace("Radio Group id=" + groupA.id);
=> Radio Group id=undefined

Thanks,
Andrew

[Jason R. Weiss]

xeek wrote:

> Hi,
>
> I assume the last parameter to createClassObject is initObj instead of obj.
> I have tried your example but it doesn't work, I am not able to get the id
> attribute from rbGroup.
>
> I have also tried the following example but it doesn't work either:
>
> var groupA = createClassObject(mx.controls.RadioButtonGroup,"gr oupA",1,{});
> trace("Radio Group id=" + groupA.id);
> => Radio Group id=undefined
>
> Thanks,
> Andrew
>

There is no such thing as the "id" property on any of the core
ActionScript clases, so you're wasting your time trying to code things
like groupA.id

It's like declaring a variable

var myFirstName: String = "Jason"

There is no "id" on myFirstName- I just reference it in my code using
myFirstName. Same thing goes with tags- an id="something" attribute on
a tag is translated at compile time to the equivalent of myFirstName--
an identifier.

For the life of me I can't figure out why you need to programmatically
access the NAME of an identifier, but since you have your heart set on this:

There is a __id (there are TWO underscores there!).
It is a private member.
You have to willfully through encapsulation out the door and rape your
object to get access to this value- something I think is a terrible way
to write code, but here you go:

<mx:Button id="test" label="Click Me" click="var myObj =
test;mx.controls.Alert.show(myObj.__id)"/>


var myObj = test is responsible for casting the Button instance to a
generic object. Since I am now the object, private is out the window so
I can access __id.

This example displays "test" in the alert box, the ID assigned to the
object in MXML.



Jason



--
Jason Weiss
Cynergy Systems, Inc.
Macromedia Flex Alliance Partner
[url]http://www.cynergysystems.com[/url]

Email: [email]jason.weiss@cynergysystems.com[/email]
Office: 866-CYNERGY
Mobile: 1.832.444.2246

[xeek]

Hi Jason,

Thank you for your help.

Andrew

[Unregistered]

This isn't quite right! You CAN set id's of objects:

var b:Button = new Button();
b.id = myButton;

but with radioButtonGroup, this is impossible. RadioButtonGroup is NOT a visual component, it's just an event dispatcher. You could do this:

var rbg:RadioButtonGroup = new RadioButtonGroup();
var rb:RadioButton = new RadioButton();
rb.group = rbg;

Dany