He Gregor, I understand what you mean, but then still: in which way can this be solved in a general and elegant way to "approach" the WeakReference behavior in the JVM?
-- Ed On Mar 25, 4:50 pm, gregor <[email protected]> wrote: > Interesting question Ed. > > I read this: > > http://docstore.mik.ua/orelly/webprog/jscript/ch11_03.htm > > and a couple of other things. Looks like different browsers do things > differently with javascript gc, with IE (surprise surprise) noticeably > differing from the others. > > My feeling is that the JVM does this in Java basically and it's in the > Java spec that it does, so you can rely on it. I don't think there is > an equivalent javascipt spec for this behavior, so you probably cannot > rely on this working, x-browser anyway, and you probably have to > explicitly kill the listener yourself. > > On Mar 25, 2:59 pm, Ed <[email protected]> wrote: > > > He all, > > > Please a bit of advice on the following? > > > In Java you can use the WeakReference object to work with so called > > weak Listeners. More details on this can be found here for > > example:http://www.javalobby.org/java/forums/t19468.html > > or:http://www.ibm.com/developerworks/java/library/j-jtp11225/ > > > I would love to do something similar but WeakReference isn't supported > > in GWT. How do others deal with it ? > > > My problem: Suppose the following: > > ViewCategory is created and adds a property listener to a global Model > > to listen to Member name changes. > > The view isn't needed anymore and as such his instance reference made > > null in the controller where it's used. > > The next time this view is needed, a new ViewCategory instance is > > created, a listener is registered and the view is shown. We assume > > that the old instance was garbage collected -> wrong assumption :( > > Suppose that I forget to unregister the listener -> memory leak..... > > The model keeps an association to the nested listener in the > > ViewCategory instance such that this object and his nested objects > > stay in memory. > > > Ofcourse you then say:" then clean this properly"... Yep... I do my > > best, but in a complex situation with many requirements and things > > going from left to right, it can happen that this is forgotten. > > > What would be nice: weak listeners, like Swing has, such that when he > > ViewCategory isn't associated anymore, it's removed and as such also > > his listener from the global model. > > > How do I realize something like this ? > > > -- Ed > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Web-Toolkit?hl=en -~----------~----~----~----~------~----~------~--~---
