I think i would be more elegant that the model register to the isClosedHolder 
changes :)

Ben

On 18 Jan 2014, at 12:09, [email protected] wrote:

> PharoLauncher is currently leaking AnnouncementSubscriptions when its window 
> closes.  I'm not sure with Spec how to ensure actions are performed when the 
> window is closed, but I have been able to achieve this with the following 
> modification [1] which is...
> -----
>   WindowModel>>windowIsClosing
>       isClosedHolder value: true
>       self model windowIsClosing  "<----proposed modification"
> -----
> 
> I investigated with a halt in SpecWindow>>close to trace through and discover 
> that it calls...
> SpecWindow(StandardWindow)>>delete, which in my non-fullscreen-case calls...
> SpecWindow(SystemWindow)>>delete, which "model windowIsClosing" calls...
> MorphicWindowAdaptor>>windowIsClosing, which "self model windowIsClosing" 
> calls...
> WindowModel>>windowIsClosing, which does only "isClosedHolder value: true"
> 
> That last line happens to hold aPharoLauncher in its 'model' instance 
> variable, so with the above proposal I can implement 
> PharoLauncher>>windowIsClosing to unregister the announcer.
> Any problem expected with that modification?
> 
> [1] https://pharo.fogbugz.com/f/cases/12677
> 
> cheers -ben
> 
> 
> 

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