AS3 ScrollPane number of items

Question

everyone.

Can I get a number of items from a ScrollPane component in Flash? If yes, then how?

Thanks in advance.

Answer 1

ScrollPane has one item which is the source parameter. If you want to know all the children within that source (and it's a DisplayObjectContainer), you can use the .numChildren property of the SOURCE.

If you want all the sub-children, you could iterate through all the children until you have you're final number:

var d:DisplayObjectContainer = scrollPane.source;

function countChildren(container:DisplayObjectContainer):int {
    var count:int = container.numChildren;
    var tmp:DisplayObject;
    var i:int = count;
    while(i--){
        tmp = container.getChildAt(i);
        if(tmp is DisplayObjectContainer){
            count += countChildren(tmp);
        }
    }
    return count;
}

so call countChildren() with the source of the scrollPane.

if(scrollPane.source is DisplayObjectContainer){
    countChildren(DisplayObjectContainer(scrollPane.source));
}

Answer 2

http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/DisplayObjectContainer.html#numChildren

Should have a numChildren if the objects you're talking about are actual direct descendants of the ScrollPane in question.