Added a VirtualFolder entity, a resolver, and a CollectionType property.

MediaBrowser.Controller/Events/ItemResolveEventArgs.cs

@@ -97,5 +97,32 @@ namespace MediaBrowser.Controller.Events
             }
         }
 
+        public VirtualFolder VirtualFolder
+        {
+            get
+            {
+                if (Parent != null)
+                {
+                    return Parent.VirtualFolder;
+                }
+
+                return null;
+            }
+        }
+
+        public string VirtualFolderCollectionType
+        {
+            get
+            {
+                VirtualFolder vf = VirtualFolder;
+
+                if (vf == null)
+                {
+                    return null;
+                }
+
+                return vf.CollectionType;
+            }
+        }
     }
 }

MediaBrowser.Controller/Kernel.cs

@@ -77,6 +77,7 @@ namespace MediaBrowser.Controller
             // Add the internal resolvers
             resolvers.Add(new VideoResolver());
             resolvers.Add(new AudioResolver());
+            resolvers.Add(new VirtualFolderResolver());
             resolvers.Add(new FolderResolver());
 
             EntityResolvers = resolvers;

MediaBrowser.Controller/MediaBrowser.Controller.csproj

@@ -60,6 +60,7 @@
     <Compile Include="Resolvers\BaseItemResolver.cs" />
     <Compile Include="Resolvers\FolderResolver.cs" />
     <Compile Include="Resolvers\VideoResolver.cs" />
+    <Compile Include="Resolvers\VirtualFolderResolver.cs" />
     <Compile Include="Xml\BaseItemXmlParser.cs" />
     <Compile Include="Xml\FolderXmlParser.cs" />
     <Compile Include="Xml\XmlExtensions.cs" />

MediaBrowser.Controller/Resolvers/FolderResolver.cs

@@ -19,10 +19,10 @@ namespace MediaBrowser.Controller.Resolvers
         }
     }
 
-    public abstract class BaseFolderResolver<T> : BaseItemResolver<T>
-        where T : Folder, new ()
+    public abstract class BaseFolderResolver<TItemType> : BaseItemResolver<TItemType>
+        where TItemType : Folder, new()
     {
-        protected override void SetItemValues(T item, ItemResolveEventArgs args)
+        protected override void SetItemValues(TItemType item, ItemResolveEventArgs args)
         {
             base.SetItemValues(item, args);
 
@@ -32,7 +32,7 @@ namespace MediaBrowser.Controller.Resolvers
             PopulateFolderMetadata(item, args);
         }
 
-        private void PopulateFolderMetadata(Folder folder, ItemResolveEventArgs args)
+        private void PopulateFolderMetadata(TItemType folder, ItemResolveEventArgs args)
         {
             var metadataFile = args.GetFileByName("folder.xml");
 

MediaBrowser.Controller/Resolvers/VirtualFolderResolver.cs

@@ -0,0 +1,41 @@
+using System.ComponentModel.Composition;
+using System.IO;
+using MediaBrowser.Controller.Events;
+using MediaBrowser.Model.Entities;
+
+namespace MediaBrowser.Controller.Resolvers
+{
+    [Export(typeof(IBaseItemResolver))]
+    public class VirtualFolderResolver : BaseFolderResolver<VirtualFolder>
+    {
+        protected override VirtualFolder Resolve(ItemResolveEventArgs args)
+        {
+            if (args.IsFolder && args.Parent != null && args.Parent.IsRoot)
+            {
+                return new VirtualFolder();
+            }
+
+            return null;
+        }
+
+        protected override void SetItemValues(VirtualFolder item, ItemResolveEventArgs args)
+        {
+            // Set the name initially by stripping off the [CollectionType=...]
+            // The name can always be overridden later by folder.xml
+            string pathName = Path.GetFileNameWithoutExtension(args.Path);
+
+            string srch = "[collectiontype=";
+            int index = pathName.IndexOf(srch, System.StringComparison.OrdinalIgnoreCase);
+
+            if (index != -1)
+            {
+                item.Name = pathName.Substring(0, index).Trim();
+
+                item.CollectionType = pathName.Substring(index + srch.Length).TrimEnd(']');
+            }
+
+            base.SetItemValues(item, args);
+        }
+
+    }
+}

MediaBrowser.Controller/Xml/FolderXmlParser.cs

@@ -3,7 +3,7 @@
 namespace MediaBrowser.Controller.Xml
 {
     /// <summary>
-    /// Fetches metadata fro a folder.
+    /// Fetches metadata for a folder.
     /// Since folder.xml contains no folder-specific values, no overrides are needed
     /// </summary>
     public class FolderXmlParser : BaseItemXmlParser<Folder>