Moves tree/menu models into the Models.Trees namespace

src/Umbraco.Web/Models/Trees/SectionRootNode.cs

@@ -0,0 +1,48 @@
+using System.Runtime.Serialization;
+
+namespace Umbraco.Web.Models.Trees
+{
+    /// <summary>
+    /// A special tree node that represents the section root node for any section.
+    /// </summary>
+    /// <remarks>
+    /// This is required to return the tree data for a given section. Some sections may only contain one tree which means it's section
+    /// root should also display a menu, whereas other sections have multiple trees and the section root shouldn't display a menu.
+    /// 
+    /// The section root also contains an explicit collection of children.
+    /// </remarks>
+    [DataContract(Name = "node", Namespace = "")]
+    public sealed class SectionRootNode : TreeNode
+    {
+        public static SectionRootNode CreateMultiTreeSectionRoot(string nodeId, TreeNodeCollection children)
+        {
+           return new SectionRootNode(nodeId, "", "")
+                {
+                    IsContainer = true,
+                    Children = children
+                };
+        }
+
+        public static SectionRootNode CreateSingleTreeSectionRoot(string nodeId, string getChildNodesUrl, string menuUrl, string title, TreeNodeCollection children)
+        {
+            return new SectionRootNode(nodeId, getChildNodesUrl, menuUrl)
+            {
+                Children = children,
+                Title = title
+            };
+        }
+
+        private SectionRootNode(string nodeId, string getChildNodesUrl, string menuUrl)
+            : base(nodeId, getChildNodesUrl, menuUrl)
+        {
+            //default to false
+            IsContainer = false;
+        }
+        
+        [DataMember(Name = "isContainer")]
+        public bool IsContainer { get; private set; }
+
+        [DataMember(Name = "children")]
+        public TreeNodeCollection Children { get; private set; }
+    }
+}