How to force datagrid headerRenderer to redraw itself?

Question

Hi guys,
    I had datagrid headers that blinks however, I want to turn the blinking off by assigning a new value of a property inside the headerRenderer. The newly assigned value is indeed stored in the property. But my problem is how to force this headerRenderer to redraw itself so it will execute the "override public function prepare(hasBeenRecycled:Boolean)" function as it has the condition that turns the blinking on or off.
Any ideas?
I had this worked but I have to get all the columns object and assign it to an arrayList then set the datagrid's columns to null and apply the arrayList. This works so perfectly in turning on or off the blinking. But this also scrolls up the datagrid back to top which I don't want to happen in my case.
Ideas are much appreciated.
Thanks in advance.

Answer 1

Flex harUI wrote:
I would move the blink logic to a shared function and have the renderer listen for a change event on some property and run that function.
Thanks for the idea. That indeed makes sense! However, how do I assign a new value to some property inside the headerRenderer when PropertyChangeEvent only supports collection classes and ObjectProxy?
example:
from
myHeaderRenderer.properties = {blink: true};
to
myHeaderRenderer.properties = {triggerObject.blink: true} // or triggerObject['blink']: true doesn't work either.
Unless there is a way for the headerRenderer to listen to a property change outside of itself (referencing to the parent objects)
OR
a way to call a function inside the headerRenderer from the main (parent) document.
Thanks in advance for your reply Flex harUl.