Re: [Flashcoders] Is this error prone? [loading multiple images]

2009-07-09 Thread Ktu 
I think I see a problem with this. I don't know how often GarbageCollection
runs, but if the loader you create has no references to it, and the only
event listener to it is set to have a weakReference, then the loader could
get discarded before it finishes, unless the act of loading doesn't allow it
to be removed.

Otherwise, as far as I know, that looks like it should be fine to get
reference to the loader again and remove the event listener.
?

Ktu

On Tue, Jul 7, 2009 at 12:50 PM, Joel Stransky j...@stranskydesign.comwrote:

 I'm wondering if I can use a for loop to create local Loader objects,
 assign
 listeners to their LoaderInfo objects without overwriting any of them and
 still be able to clean up after.

 Say I have the following inside a function body

 var img:Loader = new Loader();
 img.contentLoaderInfo.addEventListener(Event.COMPLETE, onThumb, false, 0,
 true);
 img.load(new URLRequest(someImage.jpg));

 and the following handler

 private function onThumb(e:Event):void
 {
var loader:Loader = Loader( LoaderInfo(e.target).loader );
loader.contentLoaderInfo.removeEventListener(Event.COMPLETE, onThumb);
var thumbNail:Bitmap = new Bitmap(Bitmap(loader.content).bitmapData);
thumbNail.x = (itemWidth - thumbNail.width) / 2;
addChild(thumbNail);
 }

 Will the handler work its way back to the Loader that was created
 temporarily and remove a listener from it?
 Is there a better way to using throw away loaders?


 --
 --Joel Stransky
 stranskydesign.com
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 Flashcoders@chattyfig.figleaf.com
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Re: [Flashcoders] Is this error prone? [loading multiple images]

2009-07-09 Thread Joel Stransky 
That's good thinking. I'll have to look into it some more. This one is just
hard to test since removeEventListener fails silently if the listener isn't
on the targets listener list.

On Thu, Jul 9, 2009 at 12:53 PM, Ktu ktu_fl...@cataclysmicrewind.comwrote:

 I think I see a problem with this. I don't know how often GarbageCollection
 runs, but if the loader you create has no references to it, and the only
 event listener to it is set to have a weakReference, then the loader could
 get discarded before it finishes, unless the act of loading doesn't allow
 it
 to be removed.

 Otherwise, as far as I know, that looks like it should be fine to get
 reference to the loader again and remove the event listener.
 ?

 Ktu

 On Tue, Jul 7, 2009 at 12:50 PM, Joel Stransky j...@stranskydesign.com
 wrote:

  I'm wondering if I can use a for loop to create local Loader objects,
  assign
  listeners to their LoaderInfo objects without overwriting any of them and
  still be able to clean up after.
 
  Say I have the following inside a function body
 
  var img:Loader = new Loader();
  img.contentLoaderInfo.addEventListener(Event.COMPLETE, onThumb, false, 0,
  true);
  img.load(new URLRequest(someImage.jpg));
 
  and the following handler
 
  private function onThumb(e:Event):void
  {
 var loader:Loader = Loader( LoaderInfo(e.target).loader );
 loader.contentLoaderInfo.removeEventListener(Event.COMPLETE, onThumb);
 var thumbNail:Bitmap = new Bitmap(Bitmap(loader.content).bitmapData);
 thumbNail.x = (itemWidth - thumbNail.width) / 2;
 addChild(thumbNail);
  }
 
  Will the handler work its way back to the Loader that was created
  temporarily and remove a listener from it?
  Is there a better way to using throw away loaders?
 
 
  --
  --Joel Stransky
  stranskydesign.com
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  Flashcoders mailing list
  Flashcoders@chattyfig.figleaf.com
  http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
 
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--Joel Stransky
stranskydesign.com
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[Flashcoders] Is this error prone? [loading multiple images]

2009-07-07 Thread Joel Stransky 
I'm wondering if I can use a for loop to create local Loader objects, assign
listeners to their LoaderInfo objects without overwriting any of them and
still be able to clean up after.

Say I have the following inside a function body

var img:Loader = new Loader();
img.contentLoaderInfo.addEventListener(Event.COMPLETE, onThumb, false, 0,
true);
img.load(new URLRequest(someImage.jpg));

and the following handler

private function onThumb(e:Event):void
{
var loader:Loader = Loader( LoaderInfo(e.target).loader );
loader.contentLoaderInfo.removeEventListener(Event.COMPLETE, onThumb);
var thumbNail:Bitmap = new Bitmap(Bitmap(loader.content).bitmapData);
thumbNail.x = (itemWidth - thumbNail.width) / 2;
addChild(thumbNail);
}

Will the handler work its way back to the Loader that was created
temporarily and remove a listener from it?
Is there a better way to using throw away loaders?


-- 
--Joel Stransky
stranskydesign.com
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