void IDropTarget.DragOver(IDropInfo dropInfo)
{
if (DefaultDropHandler.CanAcceptData(dropInfo))
{
var isTreeViewItem = dropInfo.InsertPosition.HasFlag(RelativeInsertPosition.TargetItemCenter) && dropInfo.VisualTargetItem is TreeViewItem;
RemoteTreeViewItem srcItem = dropInfo.Data as RemoteTreeViewItem;
RemoteTreeViewItem destItem = dropInfo.TargetItem as RemoteTreeViewItem;
if (destItem != null)
{
if (destItem.RemoteType != RemoteType.dir && destItem.Parent == srcItem.Parent)
{
return;
}
if (destItem == srcItem.Parent)
{
return;
}
}
else
{
if (srcItem.Parent is RemoteTreeViewItem == false)
{
return;
}
}
dropInfo.Effects = DefaultDropHandler.ShouldCopyData(dropInfo) ? DragDropEffects.Copy : DragDropEffects.Move;
if (isTreeViewItem)
{
dropInfo.DropTargetAdorner = typeof(RemooeTreeHighlightAdorner);
}
}
}
