Adds validation for file names

src/Umbraco.Web/Models/ContentEditing/CodeFileDisplay.cs

@@ -1,16 +1,23 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using System.Runtime.Serialization;
 using System.Text;
 using System.Threading.Tasks;
+using Umbraco.Core;
 
 namespace Umbraco.Web.Models.ContentEditing
 {
     [DataContract(Name = "scriptFile", Namespace = "")]
-    public class CodeFileDisplay : INotificationModel
+    public class CodeFileDisplay : INotificationModel, IValidatableObject
     {
+        public CodeFileDisplay()
+        {
+            Notifications = new List<Notification>();
+        }
+
         /// <summary>
         /// VirtualPath is the path to the file on disk
         /// /views/partials/file.cshtml
@@ -47,5 +54,27 @@ namespace Umbraco.Web.Models.ContentEditing
         public string Id { get; set; }
 
         public List<Notification> Notifications { get; private set; }
+
+        /// <summary>
+        /// Some custom validation is required for valid file names
+        /// </summary>
+        /// <param name="validationContext"></param>
+        /// <returns></returns>
+        public IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
+        {
+            var illegalChars = System.IO.Path.GetInvalidFileNameChars();
+            if (Name.ContainsAny(illegalChars))
+            {
+                yield return new ValidationResult(
+                    "The file name cannot contain illegal characters", 
+                    new[] { "Name" });
+            }
+            else if (System.IO.Path.GetFileNameWithoutExtension(Name).IsNullOrWhiteSpace())
+            {
+                yield return new ValidationResult(
+                    "The file name cannot be empty",
+                    new[] { "Name" });
+            }
+        }
     }
 }