 | | Re: [Flashcoders] Scoping problem within Class: passing result of
onLoad event | Re: [Flashcoders] Scoping problem within Class: passing result of
onLoad event 2004-03-14 - By Helen Triolo
Back
See this:
http://chattyfig.figleaf.com/flashcoders-wiki/index.php?ScopingCallbacksAS2
(thanks to Jonas)
Helen
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L A I V E R D wrote:
>Hi everybody,
>
>I'm trying to create an online status check for a standalone
>application. Assuming the best (let alone a third party app) solution
>would be to actually retrieve a file, this is what I have:
>
>class Test{
> private var online:Boolean;
> private var onlineURL:String =
>"http://www.laiverd.com/groundzero/online/online.txt";
> // constructor
> function Test() {
> appIsOnline = checkOnline(); // return value from
>checkOnline never arrives
> }
> // functions
> public function checkOnline() {
> var onlineCheck_lv:LoadVars = new LoadVars();
> var success:Boolean;
> onlineCheck_lv.onLoad = function(success) {
> if (success) {
> trace("success = " + success); // trace
>is correct
> return true;
> } else {
> trace("success = " + success); // trace
>is correct
> return false;
> }
> // delete success;
> // delete this;
> };
> onlineCheck_lv.load(onlineURL + "?nocacheVar=" +
>Math.random());
>// probably some way of returning the onLoad event should appear here,
>but how so that it is within the scope of the function?
> }
> // setters
> function set appIsOnline(val:Boolean) {
> online = val;
> }
> // getters
> function get appIsOnline() {
> return online;
> }
>}
>
>The property 'online' never gets set using its setter appIsOnline. The
>problem I think is somewhere in the fact that I am creating a new
>instance of the LoadVars object of which 'succes' is a property. That
>small part works. Question is; how do I get the value of 'success'
>passed on to the property online using the setter appIsOnline. I've also
>been trying to do things with onEnterFrame as the onLoad is
>asynchronous, but couldn't get that to work either.
>I am obviously missing some scoping knowledge, and as this has been
>bothering me for a couple of hours now, I hope you can free me from
>running in circles.
>
>Thanks.
>
>John
>
>
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