List<DesignerItem> Arrange(DesignerItem designerItem)
{
List<DesignerItem> list = new List<DesignerItem>();
if (designerItem == null) return list;
var directSubItems = designerItem.ChildrenDesignerItems;
designerItem.UpdateExpander();
if (directSubItems == null || directSubItems.Count == 0) return list;
var subItems = directSubItems
.OrderBy(x => Canvas.GetTop(x)).ToList();
foreach (var sub in subItems)
{
var top = double.IsNaN(Canvas.GetTop(designerItem)) ? 0 : Canvas.GetTop(designerItem) + designerItem.ActualHeight + list.Sum(x => x.ActualHeight);
list.Add(sub);
var left = Canvas.GetLeft(designerItem) + GetOffset(designerItem);
Canvas.SetTop(sub, top);
Canvas.SetLeft(sub, left);
SavePosition(sub);
list.AddRange(Arrange(sub));/*递归*/
}
return list;
}
void ChangeParent(DesignerItem newParent, DesignerItem designerItem)
{
if (newParent != null)
{
if (designerItem.ParentDesignerItem != null)
{
designerItem.ParentDesignerItem.ChildrenDesignerItems.Remove(designerItem);
}
designerItem.UpdateExpander();
designerItem.ParentDesignerItem = newParent;
newParent.ChildrenDesignerItems.Add(designerItem);
}
}
public void DrawChild(DesignerItem designerItem, DesignerItem childItem, List<DesignerItem> list)
{
if (designerItem == null) return;
DrawDesignerItem(childItem);/*创建子节点*/
childItem.UpdateLayout();
childItem.SetTemplate();
var top = Canvas.GetTop(designerItem) + designerItem.ActualHeight + list.Sum(x => x.ActualHeight);
list.Add(childItem);
var left = Canvas.GetLeft(designerItem) + GetOffset(designerItem);
Canvas.SetTop(childItem, top);
Canvas.SetLeft(childItem, left);
SavePosition(childItem);
childItem.UpdateLayout();
var source = GetItemConnector(designerItem, PARENT_CONNECTOR);
var sink = GetItemConnector(childItem, "Left");
if (source == null || sink == null) return;
#region 创建连线
var conn = new Connection(source, sink); /*创建连线*/
DesignerCanvas.Children.Add(conn); /*放到画布上*/
Panel.SetZIndex(conn, -10000);
#endregion
childItem.CanCollapsed = true;
childItem.UpdateExpander();
}
