I'm attempting to open all nodes in a Tree control (expandItem on
everything possible). There's plenty of code out there explaining
how to do it - works GREAT on static data. But, I'm loading XML data
from an external source and deriving an XML Tree from that data at
runtime. I set my Tree controls dataProvider property to my new
XMLList/XMLListCollection I create, and no nodes get
opened/expanded. I can loop through it and see which items SHOULD
get opened, but when I actually look at the Tree control, no nodes
are opened. I can take the same data I generate and create a static
variable in the Script block or MXML (say <mx:XMLListCollection
id='xlc'><mx:XMLList><item label="one"><item
label="two"/></item></mx:XMLList></mx:XMLListCollection> or var
xlc:XMLListCollection = new XMLListCollection(new XMLList(<item
label='one'><item label='two'/></item>); ) and it'll work every time
I run it. But when I try something like:
function initTree():void
{
// where xmlList is loaded at runtime
myTree.dataProvider = new XMLListCollection(xmlList);
openTree();
}
function openTree():void
{
var xlc:XMLListCollection = myTree.dataProvider as XMLListCollection;
var node:XMLList = xlc.source;
for (var i:int = 0; i < node.length(); i++)
{
if (node.children() != null)
myTree.expandItem(node, true);
}
}
I can run this code, and looping through openTree(),
myTree.expandItem get's "run" for all the appropriate nodes
(although, this particular function will only open nodes one level
below the root - my actual function has a bit more to open all
nodes), however, in the display, none are actually opened just looks
like: > one
Any ideas?
