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.
_insertionAdorner = new InsertionAdorner(
// If the target is vertical, the adorner should be horizontal
_targetOrientation == Orientation.Horizontal ? Orientation.Vertical : Orientation.Horizontal,
_isInFirstHalf ? RelativePosition.Before : RelativePosition.After,
_targetItemContainer,
AdornerLayer.GetAdornerLayer(_targetItemContainer));
}
}