I've used this code to open and select arbitrary nodes in the V2 tree
component. Might be portable to Flex, or not.
private function displayAndOpenNode(component:Tree, label:String,
node:XMLNode)
{
if(node == undefined)
{
for(var i=0;
i<component.dataProvider.childNodes.length; i++)
{
displayAndOpenNode(component, label,
component.dataProvider.childNodes[i]);
}
}
if(node.attributes.label == label)
{
var parent = node.parentNode;
while(parent != undefined)
{
component.setIsOpen(parent, true, false, false);
parent = parent.parentNode;
}
selectFirstChildWithData(component, node);
return true;
}
for(var i=0; i<node.childNodes.length; i++)
{
if(displayAndOpenNode(component, label,
node.childNodes[i]) == true)
{
return true;
}
}
return false;
}
private function selectFirstChildWithData(component:Tree,
node:XMLNode):Void
{
while(node.attributes.data == '')
{
__tree.setIsOpen(node, true, false, false);
node =
__tree.getNodeDisplayedAt(__tree.getDisplayIndex(node) + 1);
}
__tree.selectedNode = node;
onChangeSelection({target:component});
}
-josh
On Jun 8, 2006, at 2:26p, rigidcode wrote:
>
> If you make a Tree, and you set it's data to an XML object:
>
> var tree:Tree = new Tree();
> tree.showRoot=false;
> tree.labelField="@label";
>
> var xml:XML = <node >
> <node label="Something">
> <node label="child one"/>
> <node label="another child"/>
> </node>
> </node>;
>
> tree.dataProvider =xml;
>
> How do you programmatically open the "Something" item?
>
> I've tried:
>
> tree.expandItem( XML(this._tree.dataProvider).node[0],true);
>
> tree.expandItem( XML(XML(this._tree.dataProvider).node[0]),true);
>
> tree.expandItem( XML(this._tree.dataProvider).elements('node') ,true);
>
> tree.expandItem(
> XML(this._tree.dataProvider).elements('node').valueOf() ,true);
>
>
> And I've tried tree.invalidateList(); afterwards, doesn't help. This
> might be a flex bug. Has anyone programmatically selected a tree node
> *without* using something like tree.selectedItem.parent?
>
>
>
>
>
>
>
>
>
>
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