/// <summary>
/// Removes the preview adorner.
/// </summary>
private static void RemovePreviewAdorner()
{
if (overlayElt != null)
{
AdornerLayer.GetAdornerLayer(CurrentDropTargetAdvisor.GetTopContainer()).Remove(overlayElt);
overlayElt = null;
}
}
/* -------------------------------------------------------------------
* Utility functions
* ------------------------------------------------------------------- */
#region PreviewAdorner
/// <summary>
/// Creates the preview adorner.
/// </summary>
/// <param name="adornedElt">The adorned element.</param>
/// <param name="data">The objects data.</param>
private static void CreatePreviewAdorner(UIElement adornedElt, IDataObject data)
{
if (overlayElt != null)
{
return;
}
var layer = AdornerLayer.GetAdornerLayer(CurrentDropTargetAdvisor.GetTopContainer());
var feedbackUI = CurrentDropTargetAdvisor.GetVisualFeedback(data);
overlayElt = new DropPreviewAdorner(feedbackUI, adornedElt);
PositionAdorner();
layer.Add(overlayElt);
}
