public void OnItemsPasted(List <object> itemsToPaste, List <object> metaData, Point pastePoint, WorkflowViewElement pastePointReference)
        {
            // first see if a spacer is selected.
            int index = this.selectedSpacerIndex;

            // else see if we can paste after a selected child
            if (index < 0)
            {
                Selection currentSelection = this.Context.Items.GetValue <Selection>();
                index = this.Items.IndexOf(currentSelection.PrimarySelection);
                //paste after the selected child
                if (index >= 0)
                {
                    index++;
                }
            }
            if (index < 0)
            {
                index = addAtEndMarker;
            }

            IList <object> mergedItemsToPaste = CutCopyPasteHelper.SortFromMetaData(itemsToPaste, metaData);

            List <ModelItem> modelItemsToSelect = new List <ModelItem>();

            foreach (object itemToPaste in mergedItemsToPaste)
            {
                if (IsDropAllowed(itemToPaste))
                {
                    if (index == addAtEndMarker)
                    {
                        modelItemsToSelect.Add(this.Items.Add(itemToPaste));
                    }
                    else
                    {
                        modelItemsToSelect.Add(this.Items.Insert(index, itemToPaste));
                    }
                    if (index >= 0)
                    {
                        index++;
                    }
                }
            }

            this.Dispatcher.BeginInvoke(
                new Action(() =>
            {
                this.Context.Items.SetValue(new Selection(modelItemsToSelect));
            }),
                Windows.Threading.DispatcherPriority.ApplicationIdle,
                null);
        }
 void ICompositeView.OnItemsPasted(List <object> itemsToPaste, List <object> metaData, Point pastePoint, WorkflowViewElement pastePointReference)
 {
     if (itemsToPaste.Count == 1)
     {
         // Single Paste
         UpdateItem(itemsToPaste[0]);
     }
     else
     {
         // Mutiple Paste.
         IList <object> sortedList = CutCopyPasteHelper.SortFromMetaData(itemsToPaste, metaData);
         Fx.Assert(this.Item == null, "multi-paste on item != null is not supported now");
         this.DoAutoWrapDrop(InsertionPosition.None, sortedList);
     }
 }