protected override void OnDrop(DragEventArgs e)
{
string[] ids = (e.Data.GetData(DataFormats.Text) as string ?? string.Empty).Split('|');
e.Handled = true;
if (ids.Length == 2)
{
CsgNodeWrapper wrapper = Node.Repository.GetWrapperById(ids[0]);
if (e.Effects == DragDropEffects.Move)
{
CsgGroupWrapper parent = Node.Repository.GetWrapperById(ids[1]) as CsgGroupWrapper;
if (wrapper != null && parent != null)
{
CsgNodeTreeViewItem item = this;
while (item != null)
{
if (item.Node == wrapper)
{
return;
}
item = item.Parent as CsgNodeTreeViewItem;
}
if (parent.RemoveChild(wrapper))
{
if (!Group.AddChild(wrapper))
{
parent.AddChild(wrapper);
}
}
IsSelected = true;
}
}
else if (e.Effects == DragDropEffects.Link)
{
if (wrapper != null)
{
Group.AddChild(wrapper);
IsSelected = true;
}
}
}
base.OnDrop(e);
}
private void RecursiveDelete(CsgGroupWrapper group)
{
if (group == null)
{
return;
}
if (group.ReferenceCount > 0)
{
return;
}
if (group.IsObjectRoot)
{
return;
}
group.Repository.RemoveNode(group);
foreach (var item in group.Children.ToArray())
{
group.RemoveChild(item);
RecursiveDelete(item as CsgGroupWrapper);
}
}