I’m pretty sure “rubber band” scrolling is already being handled. Right?
If so, the same way to bounce back is being handled when scrolling past the
end, a refresh could be called as well.
FWIW, I have a handler which loads more results when scrolling to the bottom of
a (normal) list like this:
private function handleScroll():void
{
if(_currentContainer &&
_currentContainer.children){
var totalCells:int =
_currentContainer.children.length;
var totalRows:Number =
totalCells/thumbnailLayout.columnCount;
var pos:Number =
imageGrid.scroller.verticalScrollBar.value;
_lastScrollValue = pos;
var max:Number =
imageGrid.scroller.verticalScrollBar.maximum;
var step:Number = max / totalRows;
if(pos > max - (step*2)){
_currentContainer.getMoreResults();
}
}
}
It’s obviously not very generalized, but the approach might be useful…
(_lastScrollValue is used to restore the scroll position when the data is
updated.)
