// Creates or updates the dragged Adorner.
private void ShowDraggedAdorner(Point currentPosition)
{
if (this.draggedAdorner == null)
{
var decorator = OverlayAdornerDecorator.FindOverlayAdornerDecorator(this.sourceItemsControl);
var adornerLayer = AdornerLayer.GetAdornerLayer(decorator);
this.draggedAdorner = new DraggedAdorner(this.draggedData, GetDragDropTemplate(this.sourceItemsControl), this.sourceItemContainer, adornerLayer);
}
this.draggedAdorner.SetPosition(currentPosition.X - this.initialMousePosition.X + this.initialMouseOffset.X, currentPosition.Y - this.initialMousePosition.Y + this.initialMouseOffset.Y);
// event: drag started
this.sourceItemsControl.RaiseEvent(new AdornerOpenEventArgs() { Data = this.draggedData });
}
private void RemoveDraggedAdorner()
{
if (this.draggedAdorner != null)
{
this.draggedAdorner.Detach();
this.draggedAdorner = null;
}
// event: drag stop
this.sourceItemsControl.RaiseEvent(new AdornerClosedEventArgs());
}