This is going to sound odd, so i hope i'm wrong but...

It's nothing to do with having an empty swf (surprise) - after doing
some tests i suspected that only Flash IDE swfs were working as
anything i tested built in Flex Builder 3 wouldn't work, yet using any
other swfs locally or swiped from the net worked fine.

I thought why not try a bin-release version of any of the swf files i
had already tried (which all came from bin-debug) within Flex Builder
3... and there it was, if its a bin-debug swf using my code above the
page hangs and hangs but if i test using bin-release it's there
instantly as expected. I have tested with 6 seperate swf applications
ranging in complexity and size from a couple of hundred kilobytes to a
couple of meg.

Every time it's instant! Bizarre...

So what's the difference? Is swfobject waiting for something from the
swf that is not instantly available in a debug version but is in a
release build?
I'm assuming that Flash IDE always publishes the equivalent of a Flex
Builder release build, so maybe this is actually a swfobject bug that
only shows with multiple debug files?
Maybe it's there for a single debug file but just hard to notice...
i've tried it with just 1 swf and the release is always slightly
faster to render a page.

Any comments? Does this make sense?


On Feb 17, 3:19 pm, VocalPlayboy <[email protected]> wrote:
> Hi All,
>
> I've sussed the issue and the swfobject code and my js above does
> indeed work - very fast!
> However what i've noticed is that it only works with swf files that
> have something in them.
>
> My flex and/or as classes looked like this:
>
> AS ONLY
> ###############################################################################
> ->
>
> package
> {
>         import flash.display.Sprite;
>         import flash.external.ExternalInterface;
>         [SWF(widthPercent="100", heightPercent="100", frameRate="40",
> backgroundColor="#242424")]
>         public class a extends Sprite
>         {
>                 public function a()
>                 {
>                         if(ExternalInterface.available)
>                         {
>                                 ExternalInterface.marshallExceptions = true;
>                         try
>                         {
>                                 ExternalInterface.call("initializedOk", 
> "test");
>                         }
>                                 catch(e:Error){}
>                         }
>                 }
>         }
>
> }
>
> FLEX
> ###############################################################################
> ->
>
> <?xml version="1.0" encoding="utf-8"?>
> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";
>         layout="absolute"
>         applicationComplete="_initJS()"
>         creationComplete="_initApp()">
>         <mx:Script>
>                 <![CDATA[
>                         import flash.utils.getQualifiedClassName;
>                         import flash.external.ExternalInterface;
>                         private var __swfName:String;
>                         private function _initJS():void
>                         {
>                                 __swfName = getQualifiedClassName(this);
>                                 if (ExternalInterface.available)
>                                 {
>                                         ExternalInterface.marshallExceptions 
> = true;
>                         try
>                         {
>                                 ExternalInterface.call("initializedOk", 
> __swfName);
>                                 }
>                                 catch(e:Error){}
>                                 }
>                         }
>                         private function _initApp():void{}
>                 ]]>
>         </mx:Script>
> </mx:Application>
>
> Just empty except for the ExternalInterface logic. When i try to embed
> either of these... page renders sloooooooooow
> But if i grab a swf from anywhere else (and of any size), the embed is
> lightning fast as expected....
> So what does that actually mean?????..... i will try to find out.
>
> Cheers
> Doug
>
> On Feb 17, 9:28 am, VocalPlayboy <[email protected]> wrote:
>
> > Hey Vince,
>
> > Ok good call with the manager idea but i still don't think it will
> > make a difference, the delay comes from the actual js embed, as if
> > it's waiting for each swf to load maybe (i don't know).
> > If i try the same code locally it still takes just as long and if i
> > swap out my flex component swfs for normal swfs (so no flex framework)
> > or need for an rsl it still takes the same amount of time.
>
> > It would be good to see some other examples of multi swf embedding
> > techniques.
>
> > Cheers
> > Doug
>
> > On Feb 16, 6:50 pm, Vincent Polite <[email protected]>
> > wrote:
>
> > > Hey Vocal, I took a brief look at your page.  I haven't looked at the 
> > > actual
> > > SWFObject code, because generally speaking, if it's implemented correctly
> > > it's usually not the problem.
>
> > > Using the Net Panel tool in Firebug, I was able to note that the number of
> > > connections being farmed out to your server, DNS lookups contribute to the
> > > lions share of delay for your page loading.  Using this link (maybe
> > > outdated) as reference, it notes that there is a default max # of
> > > connections allowed from the same page by Firefox.  I'm assuming that 
> > > other
> > > browsers may have this limitation as well to make it slightly less trivial
> > > for a single browser to bring a web server to it's knees?
>
> > >http://groups.google.com/group/firebug/browse_thread/thread/04d1a83b9...
>
> > > I looked at your demo page, it didn't seem to hang for me, just took a bit
> > > using FF3.5 on a PC.  Using IE8 on the same PC, I got similar performance
> > > characteristics.  At first blush, it would seem like your server is the
> > > limiting factor, but maybe I'm wrong about that.
>
> > > ----
>
> > > 15 minutes later.
>
> > > Took a gander at your code.  You actually do something very similar to 
> > > some
> > > work I did to deal with a random number of SWFObjects on a page in terms 
> > > of
> > > pushing elements into an array and what not.  You might want to consider
> > > abstracting these for loops you have into something called a
> > > SWFObjectManager class and instead of passing around the objects 
> > > themselves
> > > which if you're not passing by reference might be more CPU work than not,
> > > that you just pass the element names around and only perform the 
> > > operations
> > > as needed.  You would need to test out which is more efficient though.
>
> > > SWFObjectManager.register("nameofDiv", "pathtoSWF", otherparams);
> > > SWFObjectManager.register("...","...",otherparams);
>
> > > if you use a lightweight framework like jQuery you could even tag your 
> > > divs
> > > with something like class="swfobject" and then use a .each() selector to
> > > grab all the swfobjects on your page and then just instantiate your
> > > swfobjects based on the meta data on your page.
>
> > > i.e. <div id="foo" class="swfobject" >Alt Content</div>
>
> > > Then your JS would be potentially reduced quite a bit:
>
> > > $(document).ready(function() {
> > >      $(".swfobject").each(function() {
> > >           divId = $(this).id;
> > >           swfName = divId+".swf";
> > >           properties = {data:swfName, width:100, height: 100};
> > >           parameters = {menu: false};
> > >           swfobject.createSWF(properties, paramters, divId);
> > >      }
>
> > > }
>
> > > It does appear that you are reusing the global arrays for some reason, so
> > > for maintainabilities sake, you might consider upgrading your arrays to a
> > > type of SWFObjectManager class and make your calls a bit more compact.
>
> > > i.e. your SWFObjectManager class would use a loop like the one above to
> > > naturally grab all the divs of class swfobject and define them
> > > appropriately, so your inline JS gets reduced to:
>
> > > $(document).ready(function() {
> > >      SWFObjectManager.init();
>
> > > });
>
> > > So sorry, stream of consciousness after Chinese New Year.  If this 
> > > confuses
> > > or is off point for you, then dump this in the recycle bin.
>
> > > VincentOn Tue, Feb 16, 2010 at 9:57 AM, VocalPlayboy 
> > > <[email protected]> wrote:
> > > > Check out these 2 demos.
>
> > > > First one the page hangs -
> > > >http://www.strangeloopstudios.com/swfobject_demo/
>
> > > > Second one there is a slight delay but at least it loads the page
> > > > quicker -http://www.strangeloopstudios.com/swfobject_demo2/
>
> > > > I'll also check out your app later, got to head out now, but thanks.
>
> > > > Doug
>
> > > > On Feb 16, 5:02 pm, Steve <[email protected]> wrote:
> > > > > Is it the size of your swfs themselves? If not, I have created an
> > > > > application that does what you want and writes the code for you. Just
> > > > > browse to your web page, drag and drop your swfs onto the page where
> > > > > you want them, set their properties, and click publish:
>
> > > > >http://norrisoftenhance.ning.com/
>
> > > > > The application includes a getting started tutoriaal and help.
>
> > > > > Steve
>
> > > > > On Feb 16, 9:38 am, VocalPlayboy <[email protected]> wrote:
>
> > > > > > Hi All,
>
> > > > > > I'm building a modular video application with a bunch of Flex
> > > > > > components and part of the requirement is to use javascript as a
> > > > > > controller to communicate between my data model and my flex 
> > > > > > component
> > > > > > views.
>
> > > > > > The first part of this task involves embedding components to 
> > > > > > specific
> > > > > > div tags in a html page. I've got this to work great but it's just
> > > > > > really really really slow - like 10 seconds slow to embed 7 swfs. 
> > > > > > I've
> > > > > > tested and the issue is to do with swfobject (possibly because of 
> > > > > > the
> > > > > > way i've coded it).
>
> > > > > > Here's my HTML:
>
> > > > > > <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "
> > > >http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";>
> > > > > > <html xmlns="http://www.w3.org/1999/xhtml"; lang="en" xml:lang="en">
> > > > > >         <head>
> > > > > >                 <title>AMX JS Player</title>
> > > > > >                 <meta http-equiv="Content-Type" content="text/html;
> > > > charset=utf-8" /
>
> > > > > >                 <script type="text/javascript"
> > > > src="./html/swfobject/swfobject.js"></
> > > > > > script>
> > > > > >                 <script type="text/javascript"
> > > > src="./html/amxjs/player.js"></
> > > > > > script>
> > > > > >         </head>
> > > > > >         <body>
> > > > > >                 <div id="AMXJSPlayer_Model">
> > > > > >                         <p>Model</p>
> > > > > >                 </div>
> > > > > >                 <div id="AMXJSPlayer_Category">
> > > > > >                         <p>Category View</p>
> > > > > >                 </div>
> > > > > >                 <div id="AMXJSPlayer_Video">
> > > > > >                         <p>Video View</p>
> > > > > >                 </div>
> > > > > >                 <div id="AMXJSPlayer_Meta">
> > > > > >                         <p>Meta View</p>
> > > > > >                 </div>
> > > > > >                 <div id="AMXJSPlayer_Latest">
> > > > > >                         <p>Latest View</p>
> > > > > >                 </div>
> > > > > >                 <div id="AMXJSPlayer_Programme">
> > > > > >                         <p>Programme View</p>
> > > > > >                 </div>
> > > > > >                 <div id="AMXJSPlayer_List">
> > > > > >                         <p>List View</p>
> > > > > >                 </div>
> > > > > >         </body>
> > > > > > </html>
>
> > > > > > And here is the simple javascript i'm using in addition to
> > > > > > swfobject.js:
>
> > > > > > var FLASH_VERSION = "9.0.124";
> > > > > > var DIV_IDS = new Array("AMXJSPlayer_Model", "AMXJSPlayer_Category",
> > > > > > "AMXJSPlayer_Meta", "AMXJSPlayer_Video", "AMXJSPlayer_Latest",
> > > > > > "AMXJSPlayer_Programme", "AMXJSPlayer_List");
> > > > > > var moduleDivs = new Array();
> > > > > > var moduleSwfs = new Array();
>
> > > > > > if (swfobject.hasFlashPlayerVersion(FLASH_VERSION))
>
> ...
>
> read more »

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