How to test to see if inputted swf exists?

Question

Hi
I have an input field that asks for a .swf name - you enter the name, hit SUBMIT, and Flash loads that .swf onto the screen.
I've coded for an error to appear if the user doesn't input anything, but how to I test to see if the swf exists, and if not, return an error?
I have a function called onSwfLoad that runs when the swf loader finishes, triggered by an Event.COMPLETE in the swf loader event listener - is there something I can put in an if statement there to test if the swf loader found a file?
Thnaks
Shaun

Answer 1

the loader class doesn't have any events.  you use the contentloaderinfo property of your loader to get a loaderinfo reference and that has the events you need:
loadSwfBut.addEventListener("mouseDown", sendData)
function sendData(evt:Event)  {
    if(loadSwf.text !=""){
var Xpos:Number = 0;
var Ypos:Number = 100;
var swf:MovieClip;
var loader:Loader = new Loader();
var defaultSWF:URLRequest = new URLRequest(loadSwf.text);
loader.load(defaultSWF);
loader.x = Xpos;
loader.y = Ypos;
addChild(loader);
        loader.contentLoaderInfo.addEventListener(Event.COMPLETE, dataOnLoad);
        loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, errorLoading);
    } else status_txt.text = "All fields are mandatory"
function errorLoading(event:IOErrorEvent):void {
    status_txt.text = "nup"
function dataOnLoad(evt:Event){
    status_txt.text = "yep";
stop();