private DragAndDropVisualMode DoHandleSingleObjectDrop <TObject>(DragAndDropArgs args, TObject o, int offset)
{
var handler = HierarchyDragAndDrop <TObject, Key> .SingleObjectDrop;
if (null == handler)
{
return(DragAndDropVisualMode.Rejected);
}
var item = GetDragAndDropItem(args);
var result = DragAndDropVisualMode.Rejected;
ISceneGraphNode resultNode = null;
if (item is SceneItem sceneItem)
{
if (null != (resultNode = handler(m_Session, o, sceneItem.Graph, null,
args.dragAndDropPosition == DragAndDropPosition.BetweenItems ? args.insertAtIndex : -1)))
{
IdsToExpand.Add(sceneItem.id);
result = DragAndDropVisualMode.Link;
}
}
if (item is EntityItem entityItem)
{
var node = entityItem.Node;
if (null != (resultNode = handler(m_Session, o, node.Graph as SceneGraph, node,
args.dragAndDropPosition == DragAndDropPosition.BetweenItems ? args.insertAtIndex : -1)))
{
IdsToExpand.Add(entityItem.id);
result = DragAndDropVisualMode.Link;
}
}
if (null == resultNode)
{
return(DragAndDropVisualMode.Rejected);
}
if (result == DragAndDropVisualMode.Link)
{
if (resultNode is EntityNode entityNode)
{
EntityHierarchyWindow.SelectOnNextPaint(entityNode.Guid);
}
}
return(result);
}
public void DuplicateSelection()
{
using (var pooled = ListPool <ISceneGraphNode> .GetDisposable())
{
var toSelect = pooled.List;
var selection = GetEntitySelection();
foreach (var group in selection.GroupBy(
e => m_EntityManager.GetSharedComponentData <SceneGuid>(e.Entity)))
{
var graph = m_SceneManager.GetGraphForScene(group.Key);
var list = group.Cast <ISceneGraphNode>().ToList();
toSelect.AddRange(graph.Duplicate(list));
}
EntityHierarchyWindow.SelectOnNextPaint(toSelect.OfType <EntityNode>().Select(e => e.Guid).ToList());
}
}