private void SetConnectorDecoratorTemplate(DesignerItem item)
 {
     if (item.ApplyTemplate() && item.Content is UIElement)
     {
         ControlTemplate template  = DesignerItem.GetConnectorDecoratorTemplate(item.Content as UIElement);
         Control         decorator = item.Template.FindName("PART_ConnectorDecorator", item) as Control;
         if (decorator != null && template != null)
         {
             decorator.Template = template;
         }
     }
 }
        static void AddAction(DiagramControl dc, IList newItems)
        {

            if (newItems == null || newItems.Count == 0) return;
            if (newItems.Count > 1)
            {
                if (dc.ItemsSource == null) return;
                if (dc.Check())
                {
                    dc.Bind(newItems);
                }
            }
            else //增加单一节点
            {
                foreach (var newItem in newItems)
                {
                    var model = newItem as DataModel;
                    if (model == null) continue;

                    var item = new DesignerItem(newItem, dc);
                    item.ItemStyle = JsonConvert.DeserializeObject<ItemStyle>(dc.GetItemStyle(newItem));
                    item.ItemStyle.designerItem = item;
                    var parentid = dc.GetPId(newItem);
                    if (parentid.IsNotEmpty())
                    {
                        var parent = dc.Manager.GetDesignerItemById(parentid);
                        parent.ChildrenDesignerItems.Add(item);
                        item.ParentDesignerItem = parent;
                        dc.Manager.DrawChild(parent, item, new List<DesignerItem>());
                        if (dc.IsAddAfter)/*增加子节点*/
                        {
                            var childs = dc.Manager.GetAllSubItems(parent).Where(x => !x.Equals(item));
                            var lastChild = !childs.Any() ? parent : childs.Aggregate((a, b) => Canvas.GetTop(a) > Canvas.GetTop(b) ? a : b);
                            var below = dc.DesignerItems.Where(x => Canvas.GetTop(x) > Canvas.GetTop(lastChild)).ToList();

                            dc.AddToMessage("增加子节点", dc.Manager.GetTime(() =>
                            {
                                below.ForEach(x => { Canvas.SetTop(x, Canvas.GetTop(x) + item.ActualHeight); });
                                Canvas.SetTop(item, Canvas.GetTop(lastChild) + lastChild.ActualHeight);
                            }));
                            dc.Manager.SetSelectItem(item);
                        }
                        else/*增加相邻节点*/
                        {
                            var s = dc.DesignerCanvas.SelectionService.CurrentSelection.ConvertAll<DesignerItem>(x => x as DesignerItem);
                            if (!s.Any()) return;
                            var selectedItem = s.FirstOrDefault();
                            if (selectedItem == null) return;

                            DesignerItem libling;
                            var down = dc.DesignerItems.Where(x => x.Level == selectedItem.Level && Canvas.GetTop(x) > Canvas.GetTop(selectedItem) && x.ParentDesignerItem.Equals(selectedItem.ParentDesignerItem)).ToList();
                            if (down.Any())
                            {
                                libling = down.Aggregate((a, b) => Canvas.GetTop(a) < Canvas.GetTop(b) ? a : b);
                                var below = dc.DesignerItems.Where(x => Canvas.GetTop(x) > Canvas.GetTop(libling)).ToList();
                                below.Add(libling);
                                dc.AddToMessage("增加相邻节点", dc.Manager.GetTime(() =>
                                {
                                    below.ForEach(x => { Canvas.SetTop(x, Canvas.GetTop(x) + item.ActualHeight); });
                                    Canvas.SetTop(item, Canvas.GetTop(libling) - libling.ActualHeight);
                                }));
                            }
                            else
                            {
                                var childs = dc.Manager.GetAllSubItems(parent);
                                var lastChild = !childs.Any() ? parent : childs.Aggregate((a, b) => Canvas.GetTop(a) > Canvas.GetTop(b) ? a : b);

                                var below = dc.DesignerItems.Where(x => Canvas.GetTop(x) > Canvas.GetTop(lastChild)).ToList();
                                dc.AddToMessage("增加相邻节点", dc.Manager.GetTime(() =>
                                {
                                    below.ForEach(x => { Canvas.SetTop(x, Canvas.GetTop(x) + item.ActualHeight); });
                                    Canvas.SetTop(item, Canvas.GetTop(lastChild) + lastChild.ActualHeight);
                                }));
                            }
                        }
                    }
                    else
                    {
                        dc.Manager.DrawRoot(item);
                        item.ApplyTemplate();
                        item.SetTemplate();
                        item.UpdateLayout();
                        if (dc.ItemsSource.Count > 1)
                        {
                            Canvas.SetTop(item, dc.GetTop(newItem) - item.ActualHeight / 2);
                            Canvas.SetLeft(item, dc.GetLeft(newItem) - item.ActualWidth / 2);
                        }
                        else
                        {
                            Canvas.SetTop(item, 0);
                            Canvas.SetLeft(item, 0);
                        }
                    }
                    dc.DesignerItems.Add(item);
                    dc.Manager.SetSelectItem(item);
                    dc.Manager.Scroll(item);
                    dc.Manager.SavePosition();
                }
            }



        }
 private void SetConnectorDecoratorTemplate(DesignerItem item)
 {
     if (item.ApplyTemplate() && item.Content is UIElement)
     {
         ControlTemplate template = DesignerItem.GetConnectorDecoratorTemplate(item.Content as UIElement);
         Control decorator = item.Template.FindName("PART_ConnectorDecorator", item) as Control;
         if (decorator != null && template != null)
             decorator.Template = template;
     }
 }