Change state for itemRenderer when drag complete

Question

I have a List with dragEnabled = true, and selectionColor = "#ff0000", when the user selects one item, it behaves as what I expect. But when I complete drag and release item, it still remains selected state. What I want is when drag complete, the item back to normal state, NOT selected state. What I do is that I check if the data dropComplete property is true, then change the state, but it can NOT work.
my code is following:
override protected function getCurrentRendererState():String {
    currentState = super.getCurrentRendererState();
    if(data.dropComplete) {
        currentState = null;
        data.dromComplete = false;

Answer 1

the solution is really simple, just listen for dragComplete event in List
private fucntion myDragComplete(event:DragEvent):void {
    this.selectedIndices = new Vector.<int>;