From b0157d7116603c6ab6211ce329c4c70021309e1c Mon Sep 17 00:00:00 2001
From: Warren Buckley <warren@umbraco.com>
Date: Tue, 11 Dec 2018 14:08:44 +0000
Subject: [PATCH 1/2] We do not need to ship with these Umbraco Forms trees in
 the config file

---
 src/Umbraco.Web.UI/config/trees.config | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/Umbraco.Web.UI/config/trees.config b/src/Umbraco.Web.UI/config/trees.config
index 2b99f8751f..7f7aeca8a7 100644
--- a/src/Umbraco.Web.UI/config/trees.config
+++ b/src/Umbraco.Web.UI/config/trees.config
@@ -30,9 +30,5 @@
     <add initialize="true" sortOrder="1" alias="memberGroups" application="member" title="Member Groups" iconClosed="icon-folder" iconOpen="icon-folder-open" type="Umbraco.Web.Trees.MemberGroupTreeController, Umbraco.Web" />
     <!--Translation-->
     <add initialize="true" application="translation" alias="dictionary" title="Dictionary" type="Umbraco.Web.Trees.DictionaryTreeController, Umbraco.Web" iconClosed="icon-folder" iconOpen="icon-folder" sortOrder="0" />   
-    <!-- Custom -->
-    <add initialize="true" sortOrder="2" alias="datasource" application="forms" title="Datasources" iconClosed="icon-folder" iconOpen="icon-folder-open" type="Umbraco.Forms.Web.Trees.DataSourceTreeController, Umbraco.Forms.Web" />
-    <add initialize="true" sortOrder="0" alias="form" application="forms" title="Forms" iconClosed="icon-folder" iconOpen="icon-folder-open" type="Umbraco.Forms.Web.Trees.FormTreeController, Umbraco.Forms.Web" />
-    <add initialize="true" sortOrder="3" alias="prevaluesource" application="forms" title="Prevalue sources" iconClosed="icon-folder" iconOpen="icon-folder-open" type="Umbraco.Forms.Web.Trees.PreValueSourceTreeController, Umbraco.Forms.Web" />
-    <add initialize="true" sortOrder="3" alias="formsecurity" application="users" title="Forms Security" iconClosed="icon-folder" iconOpen="icon-folder-open" type="Umbraco.Forms.Web.Trees.FormSecurityTreeController, Umbraco.Forms.Web" />
+    
 </trees>

From 767cd93f08b83acc175aa2311ff29936260147ee Mon Sep 17 00:00:00 2001
From: Warren Buckley <warren@umbraco.com>
Date: Tue, 11 Dec 2018 14:09:44 +0000
Subject: [PATCH 2/2] Adds in some logic if we have no child trees for that
 application/section then we create a SingleTreeRoot

---
 .../Trees/ApplicationTreeController.cs           | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/Umbraco.Web/Trees/ApplicationTreeController.cs b/src/Umbraco.Web/Trees/ApplicationTreeController.cs
index c1192b6909..d824f32f4b 100644
--- a/src/Umbraco.Web/Trees/ApplicationTreeController.cs
+++ b/src/Umbraco.Web/Trees/ApplicationTreeController.cs
@@ -78,10 +78,20 @@ namespace Umbraco.Web.Trees
                     }
                 }
 
-                var multiTree = TreeRootNode.CreateMultiTreeRoot(collection);
-                multiTree.Name = Services.TextService.Localize("sections/" + application);
+                if(collection.Count > 0)
+                {
+                    var multiTree = TreeRootNode.CreateMultiTreeRoot(collection);
+                    multiTree.Name = Services.TextService.Localize("sections/" + application);
 
-                return multiTree;
+                    return multiTree;
+                }
+
+                //Otherwise its a application/section with no trees (aka a full screen app)
+                //For example we do not have a Forms tree definied in C# & can not attribute with [Tree(isSingleNodeTree:true0]
+                var rootId = Constants.System.Root.ToString(CultureInfo.InvariantCulture);
+                var section = Services.TextService.Localize("sections/" + application);
+
+                return TreeRootNode.CreateSingleTreeRoot(rootId, null, null, section, TreeNodeCollection.Empty, true);
             }
 
             var rootNodeGroups = new List<TreeRootNode>();