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);
}
}
}
public void DragOver(IDropInfo dropInfo)
{
if (DefaultDropHandler.CanAcceptData(dropInfo))
{
// default should always the move action/effect
var copyData = (dropInfo.DragInfo.DragDropCopyKeyState != default(DragDropKeyStates)) && dropInfo.KeyStates.HasFlag(dropInfo.DragInfo.DragDropCopyKeyState)
//&& (dropInfo.DragInfo.VisualSource != dropInfo.VisualTarget)
&& !(dropInfo.DragInfo.SourceItem is HeaderedContentControl) &&
!(dropInfo.DragInfo.SourceItem is HeaderedItemsControl) &&
!(dropInfo.DragInfo.SourceItem is ListBoxItem);
dropInfo.Effects = copyData ? DragDropEffects.Copy : DragDropEffects.Move;
var isTreeViewItem = dropInfo.InsertPosition.HasFlag(RelativeInsertPosition.TargetItemCenter) && dropInfo.VisualTargetItem is TreeViewItem;
dropInfo.DropTargetAdorner = isTreeViewItem ? DropTargetAdorners.Highlight : DropTargetAdorners.Insert;
}
}
public static void DragOver(IDropInfo dropInfo)
{
if (dropInfo.DragInfo == null)
{
if (dropInfo.Data is DataObject data && data.ContainsFileDropList())
{
dropInfo.Effects = DragDropEffects.Copy;
}
}
else if (DefaultDropHandler.CanAcceptData(dropInfo))
{
dropInfo.Effects = DragDropEffects.Move;
}
if (dropInfo.Effects != DragDropEffects.None)
{
dropInfo.DropTargetAdorner = DropTargetAdorners.Insert;
}
}