private void RemoveInsertionAdorner()
{
if (insertionAdorner != null) {
insertionAdorner.Detach();
insertionAdorner = null;
}
}
private void CreateInsertionAdorner()
{
if (targetItemContainer != null) {
// Here, I need to get adorner layer from targetItemContainer and not targetItemsControl.
// This way I get the AdornerLayer within ScrollContentPresenter, and not the one under AdornerDecorator (Snoop is awesome).
// If I used targetItemsControl, the adorner would hang out of ItemsControl when there's a horizontal scroll bar.
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(targetItemContainer);
insertionAdorner = new InsertionAdorner(hasVerticalOrientation, isInFirstHalf, targetItemContainer,
adornerLayer);
}
}