[Xerte] Re: event failing on second call

Fri Mar 30 09:08:36 BST 2012

Here's the engine code, which makes the problem obvious:

ICON.prototype.loadVars = function(url){
     this.loadVars = new LoadVars(); //overriding the function with the object. Duh. But maybe there is a good reason for this?

     this.loadVars.icon = this;
     this.loadVars.load(url);
     this.loadVars.onData = function(src){
           this.icon.rawData = src;
           this.icon.broadcast('onLoadVarsData');
           this.onLoad();
     }
     this.loadVars.onLoad = function(success){
           this.icon.broadcast('onLoadVars');
     }
}

I can change it to this - which will break existing code that only fires once and works. To fix it I either change the function name or the object name... either way something breaks.

ICON.prototype.loadVars = function(url){
     this.lv = new LoadVars();
     this.lv.icon = this;
     this.lv.load(url);
     this.lv.onData = function(src){
           this.icon.rawData = src;
           this.icon.broadcast('onLoadVarsData');
           this.onLoad();
     }
     this.lv.onLoad = function(success){
           this.icon.broadcast('onLoadVars');
     }
}

From: xerte-bounces at lists.nottingham.ac.uk [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Dave Burnett
Sent: 29 March 2012 16:09
To: Xerte list
Subject: [Xerte] Re: event failing on second call

Paul, I can't get that far.
The event will only fire once.
It's as Jules mentioned, the function seems to be destroyed after a successful first load.

________________________________
Date: Thu, 29 Mar 2012 07:20:36 -0700
From: Paul.Swanson at harlandfs.com
To: xerte at lists.nottingham.ac.uk
Subject: [Xerte] Re: event failing on second call
Try parsing rawData:

rawInfoArray = rootIcon.rawData.split ('&'); // save string pairs into an array
for (i=0; i<rawInfoArray.length; i++) { // break pairs into smaller arrays and parse
  tempArray = rawInfoArray[i].split ('=');
  debug(tempArray[0] = ': ' + tempArray[1]);
}

From: xerte-bounces at lists.nottingham.ac.uk [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Dave Burnett
Sent: Thursday, March 29, 2012 7:00 AM
To: Xerte list
Subject: [Xerte] Re: event failing on second call

I tried myIcon.readFile and that seems to be able to be called repeatedly without issue.
Must just be something with loadVars.
Odd.

________________________________
From: Julian.Tenney at nottingham.ac.uk
To: xerte at lists.nottingham.ac.uk
Date: Thu, 29 Mar 2012 14:54:57 +0100
Subject: [Xerte] Re: event failing on second call
If you load a swf into a movieclip, you lose any custom methods / properties of that clip after the load.

So you can do

mc.someFunction = function(){ //blah  }
mc.loadMovie('some.swf', blah)

and then in some.swf's timeline call this.somefunction. It doesn't exist. Maybe I was thinking of that.

Not sure what's going with loadVars, I've never used them, but either debug things in the engine, or send me a simple example and I'll see what's happening.

From: xerte-bounces at lists.nottingham.ac.uk [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Dave Burnett
Sent: 29 March 2012 14:52
To: Xerte list
Subject: [Xerte] Re: event failing on second call

The load wipes stuff out?
Is it true for all the methods of sending/loading external data?

________________________________
From: Julian.Tenney at nottingham.ac.uk
To: xerte at lists.nottingham.ac.uk
Date: Thu, 29 Mar 2012 12:50:42 +0100
Subject: [Xerte] Re: event failing on second call
I think its like loading XML where the load wipes out methods / properties on the object.

Can you build a new icon for each load vars call?

i.e.

INT
  BUT
    TXT // a dummy loadVars
   SCR //kick off the loadvars

    INT
      EVT
        //handle the loadvars

From: xerte-bounces at lists.nottingham.ac.uk [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Dave Burnett
Sent: 29 March 2012 12:37
To: Xerte list
Subject: [Xerte] Re: event failing on second call

OK, here's the trace of 2 consecutive calls with
debug(rootIcon.loadVars);

//first call
top debug //directly under button
[type Function]
load //directly under loadVars call
[type Function]
loaded //success

//second call

top debug
onLoad=%5Btype%20Function%5D&onData=%5Btype%20Function%5D&icon=%5Flevel0%2Eengine%2EIFC
load
onLoad=%5Btype%20Function%5D&onData=%5Btype%20Function%5D&icon=%5Flevel0%2Eengine%2EIFC

What is happening to the loadVars  function?

________________________________
From: d_b_burnett at hotmail.com
To: xerte at lists.nottingham.ac.uk
Subject: event failing on second call
Date: Thu, 29 Mar 2012 06:43:54 -0400

I click a button to pop up a scrolling text window which is populated with a loadVars call to a text file.

rootIcon.loadVars('http://www.myserver.com/common/revisions.txt?nt=' + (new Date()).getTime());

followed by an Event interaction

onLoadVars
rootIcon

It works the first time, but if I click the button again, the event will not fire again.
I ran into this once before but can't remember what the issue was.

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