missing files.

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

@@ -0,0 +1,12 @@
+using System.Collections.Generic;
+
+namespace Umbraco.Web.Models.ContentEditing
+{
+    public interface INotificationModel
+    {
+        /// <summary>
+        /// This is used to add custom localized messages/strings to the response for the app to use for localized UI purposes.
+        /// </summary>
+        List<Notification> Notifications { get; }
+    }
+}

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

@@ -0,0 +1,57 @@
+using Umbraco.Web.UI;
+
+namespace Umbraco.Web.Models.ContentEditing
+{
+    public static class MessagesExtensions
+    {
+        public static void AddNotification(this INotificationModel model, string header, string msg, SpeechBubbleIcon type)
+        {
+            model.Notifications.Add(new Notification()
+                {
+                    Header = header,
+                    Message = msg,
+                    NotificationType = type
+                });
+        }
+
+        public static void AddSuccessNotification(this INotificationModel model, string header, string msg)
+        {
+            model.Notifications.Add(new Notification()
+                {
+                    Header = header,
+                    Message = msg,
+                    NotificationType = SpeechBubbleIcon.Success
+                });
+        }
+
+        public static void AddErrorNotification(this INotificationModel model, string header, string msg)
+        {
+            model.Notifications.Add(new Notification()
+                {
+                    Header = header,
+                    Message = msg,
+                    NotificationType = SpeechBubbleIcon.Error
+                });
+        }
+
+        public static void AddWarningNotification(this INotificationModel model, string header, string msg)
+        {
+            model.Notifications.Add(new Notification()
+                {
+                    Header = header,
+                    Message = msg,
+                    NotificationType = SpeechBubbleIcon.Warning
+                });
+        }
+
+        public static void AddInfoNotification(this INotificationModel model, string header, string msg)
+        {
+            model.Notifications.Add(new Notification()
+                {
+                    Header = header,
+                    Message = msg,
+                    NotificationType = SpeechBubbleIcon.Info
+                });
+        }
+    }
+}

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

@@ -0,0 +1,16 @@
+using System.Runtime.Serialization;
+using Umbraco.Web.UI;
+
+namespace Umbraco.Web.Models.ContentEditing
+{
+    [DataContract(Name = "notification", Namespace = "")]
+    public class Notification
+    {
+        [DataMember(Name = "header")]
+        public string Header { get; set; }
+        [DataMember(Name = "message")]
+        public string Message { get; set; }
+        [DataMember(Name = "type")]
+        public SpeechBubbleIcon NotificationType { get; set; }
+    }
+}

src/Umbraco.Web/Umbraco.Web.csproj

@@ -308,7 +308,10 @@
     <Compile Include="Models\ContentEditing\ContentSaveAction.cs" />
     <Compile Include="Models\ContentEditing\ContentTypeBasic.cs" />
     <Compile Include="Models\ContentEditing\IHaveUploadedFiles.cs" />
+    <Compile Include="Models\ContentEditing\INotificationModel.cs" />
     <Compile Include="Models\ContentEditing\MediaItemDisplay.cs" />
+    <Compile Include="Models\ContentEditing\MessagesExtensions.cs" />
+    <Compile Include="Models\ContentEditing\Notification.cs" />
     <Compile Include="Models\ContentEditing\Section.cs" />
     <Compile Include="Models\ContentEditing\Tab.cs" />
     <Compile Include="Models\ContentEditing\TabbedContentItem.cs" />