Testing for XML items to be true

1

I have an XML file and in the file there is a node called <content>. This content can have one of two child nodes <flashID> or <loadUrl>. I have a function called videoList. Here I am using a switch case statement. Where I am running into problems is trying to determine which menu item <categoryName> has a video and play it.

In my videoList, case “Our Work” does not have any video urls associated with it. Yet when I click on this button in my clipClick function, the menu, it plays a video. How do I write my clipClick function or videoList function to check for when the <loadUrl> is present in the <content>. I hope that makes sense.


//put button names from XML into an array
var categoryNames:Array;

//create menu
function createMenu():void {
    //get info
    for each (var node:XML in navData) {
        //trace(node.name.toString());
        infoName=node.info.name.toString();
        infoClient=node.info.client.toString();
        infoCreator=node.info.creator.toString();
        //
        infoContactCompany=node.info.contactCompany.toString();
        infoContactName=node.info.contactName.toString();
        infoContactEmail=node.info.contactEmail.toString();
        //
        infoSalesName=node.info.salesName.toString();
        infoSalesEmail=node.info.salesEmail.toString();
        infoSalesPhone=node.info.salesPhone.toString();

        //place text in text fields
        pname.text=infoName;
        client.text=infoClient;
        creator.text=infoCreator;
    }

    //Determine unique category names 
    categoryNames=[];
    var categories:XMLList=navData..categoryName;
    for (var i:int = 0; i < categories.length(); i++) {
        var categoryName:String=categories*;
        if (categoryNames.indexOf(categoryName)==-1) {
            categoryNames.push(categoryName);
        }
    }

    // Build menu based on categories 
    for (i = 0; i < categoryNames.length; i++) {
        //trace("Top level:", categoryNames*);
        var pages:XMLList = navData..page.(categoryName == categoryNames*);
        for (var p:int = 0; p < pages.length(); p++) {
            //trace(" -> Subpage: "+ pages[p].pageName +" : "+ pages[p].type);
        }
        buildButtons(categoryNames*, pages.pageName);
        videoList(categoryNames*, pages.content.loadUrl);
    }
}

var vidSource:String;
var videoPaths:Array = new Array();
var vidCounter:int=0;

function videoList(categoryName:String, url:String):void {
    switch (categoryName) {
        case "Introduction" :
            videoPaths.push(url);
            break;

        case "Our Work" :
            videoPaths.push(url);
            break;

        case "Our Services" :
            videoPaths.push(url);
            break;
    }
}

// Set the function for what happens when that button gets clicked
function clipClick(e:Event):void {
    //outText.text=e.target.clickToPage;
    switch (e.target.clickToPage) {
        case "Introduction" :
            if (vidPlaying=="false") {
                stream_ns.close();
                playNextVideo(vidSource);
            } else {
                playVideos(vidSource);
            }
            container.visible=true;
            break;
            //
        case "Our Work" :
            if (vidPlaying=="false") {
                stream_ns.close();
                playNextVideo(vidSource);
            } else {
                playVideos(vidSource);
            }
            container.visible=true;
            break;
            //
        case "Our Services" :
            if (vidPlaying=="false") {
                stream_ns.close();
                playNextVideo(vidSource);
            } else {
                playVideos(vidSource);
            }
            container.visible=true;
            break;
            //
    }
}

function playVideos(vidSource):void {
    stream_ns.close();
    vidSource=String(videoPaths[vidCounter]);
    trace("video currently playing :", vidSource);
    outText.appendText("
"+ vidSource);
    //play first video
    stream_ns.play(vidSource);
}

function playNextVideo(vidSource):void {
    vidSource=String(videoPaths[vidCounter]);
    trace("video currently playing :", vidSource);
    outText.appendText("
"+ vidSource);
    //play next video
    stream_ns.play(vidSource);
}

here is a partial section of the XML


<pages>
        <page>
            <categoryName>Introduction</categoryName>
            <pageName>Animated Logo</pageName>
            <type>Static</type>
            <order>1-1</order>
            <content>
                <flashId>webriver-anilogo</flashId>
            </content>
        </page>
        <page>
            <categoryName>Introduction</categoryName>
            <pageName>Welcome Video</pageName>
            <type>Video</type>
            <order>1-2</order>
            <content>
                <loadUrl>http://pegasus.dev.webriverinteractive.com/API/Resource.ashx?ResourceID=72</loadUrl>
            </content>
        </page>
        <page>
            <categoryName>Our Work</categoryName>
            <pageName>We Make It So</pageName>
            <type>Static</type>
            <order>2-1</order>
            <content>
                <flashId>webriver-makeitso</flashId>
            </content>
        </page>
        <page>
            <categoryName>Our Services</categoryName>
            <pageName>Application Development</pageName>
            <type>Video</type>
            <order>3-1</order>
            <content>
                <loadUrl>http://pegasus.dev.webriverinteractive.com/API/Resource.ashx?ResourceID=73</loadUrl>
            </content>
        </page>
//...