From 2c15db595085f36229c0bbe2de49232a88109706 Mon Sep 17 00:00:00 2001
From: Shannon <sdeminick@gmail.com>
Date: Thu, 4 Aug 2016 18:34:20 +0200
Subject: [PATCH] U4-8530 Make it possbile to hide preview button by
 DocumentType or ContentItem

---
 .../src/views/content/edit.html                      |  2 +-
 .../Models/ContentEditing/ContentItemDisplay.cs      | 12 +++++++++---
 src/Umbraco.Web/Models/Mapping/ContentModelMapper.cs |  1 +
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/Umbraco.Web.UI.Client/src/views/content/edit.html b/src/Umbraco.Web.UI.Client/src/views/content/edit.html
index c07dad7555..baf1cd7b3d 100644
--- a/src/Umbraco.Web.UI.Client/src/views/content/edit.html
+++ b/src/Umbraco.Web.UI.Client/src/views/content/edit.html
@@ -58,7 +58,7 @@
                </umb-button>
 
                <umb-button
-                  ng-if="!page.isNew && content.preview"
+                  ng-if="!page.isNew && content.allowPreview"
                   type="button"
                   action="preview(content)"
                   label="Preview page"
diff --git a/src/Umbraco.Web/Models/ContentEditing/ContentItemDisplay.cs b/src/Umbraco.Web/Models/ContentEditing/ContentItemDisplay.cs
index 17ec927371..2615c8774d 100644
--- a/src/Umbraco.Web/Models/ContentEditing/ContentItemDisplay.cs
+++ b/src/Umbraco.Web/Models/ContentEditing/ContentItemDisplay.cs
@@ -22,7 +22,7 @@ namespace Umbraco.Web.Models.ContentEditing
     {
         public ContentItemDisplay()
         {
-            Preview = true;
+            AllowPreview = true;
         }
 
         [DataMember(Name = "publishDate")]
@@ -40,8 +40,14 @@ namespace Umbraco.Web.Models.ContentEditing
         [DataMember(Name = "urls")]
         public string[] Urls { get; set; }
 
-        [DataMember( Name = "preview" )]
-        public bool Preview { get; set; }
+        /// <summary>
+        /// Determines whether previewing is allowed for this node
+        /// </summary>
+        /// <remarks>
+        /// By default this is true but by using events developers can toggle this off for certain documents if there is nothing to preview
+        /// </remarks>
+        [DataMember( Name = "allowPreview" )]
+        public bool AllowPreview { get; set; }
 
         /// <summary>
         /// The allowed 'actions' based on the user's permissions - Create, Update, Publish, Send to publish
diff --git a/src/Umbraco.Web/Models/Mapping/ContentModelMapper.cs b/src/Umbraco.Web/Models/Mapping/ContentModelMapper.cs
index 7f50b618d4..e2cdd1f7e4 100644
--- a/src/Umbraco.Web/Models/Mapping/ContentModelMapper.cs
+++ b/src/Umbraco.Web/Models/Mapping/ContentModelMapper.cs
@@ -66,6 +66,7 @@ namespace Umbraco.Web.Models.Mapping
                             ? new[] {"Cannot generate urls without a current Umbraco Context"}
                             : content.GetContentUrls(UmbracoContext.Current)))
                 .ForMember(display => display.Properties, expression => expression.Ignore())
+                .ForMember(display => display.AllowPreview, expression => expression.Ignore())
                 .ForMember(display => display.TreeNodeUrl, expression => expression.Ignore())
                 .ForMember(display => display.Notifications, expression => expression.Ignore())
                 .ForMember(display => display.Errors, expression => expression.Ignore())