Auto selecting ItemRenderers in a DataGroup?

Question

I have IconItemRenderers in a DataGroup. I want the items to behave like they do in a List component: i.e. clicking an item selects that item and also deselects any other selected items.
Also the List component has a "selectedItem" property but the DataGroup does not, so when an item is selected in a DataGroup, I would want to make sure I know which item is selected.
What is a good strategy of mimicing the item selecting of the List component for the DataGroup component?

Answer 1

I am now manually telling the iconItemrenderers to select/deselect, but that doesn't work for a various reasons:
1) I have the DataGroup's layout set its useVirtualLayout property to true. So the IconItemRenderers are reused when I scroll to an unseen page of renderers. If I select an item and then scroll to a new down to view more renderers then one of the new renderers appears to be selected. When I scroll back to the original renderer, that renderer may or may not be selected. So I need a way to select a renderer while still being able to use useVirtualLayout.
2) Sometimes I need to programatically select the next or previous item renderer. The problem with doing it programatically is that because I am using useVirtualLayout, the renderer that I want selected may not have been rendered yet.
Is there no easy way to select/deselect renderers in a DataGroup?