void IDropTarget.ShowFeedback()
{
if (feedback == null)
{
feedback = DragDropUtility.DropHorizontalFeedback;
}
HtmlRect outer = treeView.Element.GetBoundingClientRect();
Rect rc = null;
if (hit != null)
{
rc = hit.Rect.Intersect(outer);
if (2 * (clientY - hit.Rect.Top) >= hit.Rect.Height)
{
rc.Top = rc.Bottom;
}
}
else
{
rc = new Rect()
{
Left = outer.Left, Top = outer.Bottom - 1, Width = outer.Right - outer.Top, Height = 1
};
if (outer.Height / treeView.RowHeight < treeView.NodeSource.Count)
{
rc.Top = treeView.RowHeight * (int)treeView.NodeSource.Count;
}
}
feedback.Show(rc);
}
void IDisposable.Dispose()
{
feedback = feedback.EnsureDispose();
}
