'Recursion too deep; the stack overflowed.' error

In my application, I have some radio buttons, which are always grouped
in groups of 2 or more.  Recently I started getting some 'Recursion
too deep' errors when I click on some of the radio buttons.  For
example:

'Recursion too deep; the stack overflowed. (16r3E9: Recursion too
deep; the stack overflowed.)'
ProcessorScheduler>>stackOverflow:
[] in ProcessorScheduler>>vmi:list:no:with:
BlockClosure>>ifCurtailed:
ProcessorScheduler>>vmi:list:no:with:
EventsCollection(SharedIdentityDictionary)>>hash:max:
EventsCollection(SharedIdentityDictionary)>>findKeyOrNil:
EventsCollection(LookupTable)>>at:ifAbsent:
[] in EventsCollection(SharedLookupTable)>>at:ifAbsent:
[] in Mutex>>critical:
BlockClosure>>ifCurtailed:
BlockClosure>>ensure:
Mutex>>critical:
EventsCollection(SharedLookupTable)>>at:ifAbsent:
EventsCollection>>triggerEvent:
MyModel(Object)>>trigger:
MyModel>>myRadioButton:
MyModel>>myRadioButton:
MyModel>>myRadioButton:
...etc.

Some of the radio buttons in my application produce this error when I
click on them, while others do not.

In the model, I implemented some logic so that when one radio button
in the group is selected, it sets the others in the same group to
false.  For example, in one group, I have a pair of radio buttons
called rb1 and rb2.  In the model, I have two setter methods:

rb1: aBoolean
        rb1 := aBoolean.
        self trigger: #rb1Changed.
        (aBoolean notNil and: [aBoolean]) ifTrue: [self rb2: false].

rb2: aBoolean
        rb2 := aBoolean.
        self trigger: #rb2Changed.
        (aBoolean notNil and: [aBoolean]) ifTrue: [self rb1: false].

I don't think this logic is causing the error, because when I click on
a radio button that causes the error (and rb1 and rb2 do cause the
error), and then click on another radio button in the same view (but
in a different group of radio buttons) that does not cause the error,
then clicking once again on the first radio button no longer causes
the error!

Can anyone suggest a cause of this 'Recursion too deep' error?

Thanks.

Ted Shen

On 2 Nov 2004 12:57:36 -0800, Ted Shen <[hidden email]> wrote:

What do you do on #rb1Changed and #rb2Changed?

--
Regards
HweeBoon
MotionObj

Ted,

> In my application, I have some radio buttons, which are always grouped
> in groups of 2 or more.  Recently I started getting some 'Recursion
> too deep' errors when I click on some of the radio buttons.  For
> example:
[]
> MyModel>>myRadioButton:
> MyModel>>myRadioButton:
> MyModel>>myRadioButton:
> ...etc.

I still think you will have to show us what's in the MyModel>>myRadioButton:
method, and how the method is used, as that appears to be (from your
truncated error dump) where the recursion is happening.

> In the model, I implemented some logic so that when one radio button
> in the group is selected, it sets the others in the same group to
> false.  For example, in one group, I have a pair of radio buttons
> called rb1 and rb2.  In the model, I have two setter methods:

Can I ask why you feel the need to do this manually?.  I think it's much
easier and neater to let Windows automatically handle the
selection/deselection of the buttons.  All you have to do is use the VC to
set the #isGroupStop aspect of the first button in a group (which much all
be in one container) to true and the same aspect in the rest of the buttons
to false.

--
Ian

Use the Reply-To address to contact me.
Mail sent to the From address is ignored.

I wrote:

>   All you have to do is use the
> VC to set the #isGroupStop aspect of the first button in a group
> (which much all be in one container) to true and the same aspect in
> the rest of the buttons to false.

Can I just expand that a bit as it can get confusing.  A demo....

Start up the VC and open up the Toolbox.
DragDrop a Presenter.Container View onto the arena.
DragDrop three BooleanPresenter.Radio buttons onto the container

Running File/Test shows the three buttons are not acting as a radio button
group and you are able to select all three at the same time.

Go to the second and third RadioButtons and set the #isGroupStop aspect to
false

Running File/Test now shows all three buttons acting as a group, selecting
one deselects the other.

DragDrop three more BooleanPresenter.Radio buttons onto the container
Set the new second and third buttons #isGroupStop aspect to false

Running File/Test now shows that you have two _separate_ groups with the
buttons whose #isGroupStop aspect is set to true defining the first button
in the group.

Does that explain things a bit better?

--
Ian

Use the Reply-To address to contact me.
Mail sent to the From address is ignored.

"Yar Hwee Boon" <[hidden email]> wrote in message news:<[hidden email]>...

> What do you do on #rb1Changed and #rb2Changed?

I do not implement #rb1Changed or #rb2Changed.  

Ted