Setting RTL on Content dynamically based on the Content or Site Culture

src/Orchard.Web/Modules/Orchard.Localization/Module.txt

@@ -18,4 +18,5 @@ Features:
 	Orchard.Localization.CutlureSelector:
 		Description: Enables a culture picker to localize the UI.
 		Category: Content
-		Name: Culture Picker
+		Name: Culture Picker
+		Dependencies: Orchard.Localization

src/Orchard.Web/Modules/Orchard.Localization/Orchard.Localization.csproj

@@ -68,6 +68,7 @@
     <Compile Include="Controllers\AdminController.cs" />
     <Compile Include="Controllers\CutlureSelectorController.cs" />
     <Compile Include="Providers\CultureSelectorSelector.cs" />
+    <Compile Include="Services\AdminDirectionalityFactory.cs" />
     <Compile Include="Services\CultureSelectorFactory.cs" />
     <Compile Include="Services\DefaultCultureStorageProvider.cs" />
     <Compile Include="Services\ICultureService.cs" />

src/Orchard.Web/Modules/Orchard.Localization/Services/AdminDirectionalityFactory.cs

@@ -0,0 +1,63 @@
+using System.Globalization;
+using System.Web.Routing;
+using Orchard.ContentManagement;
+using Orchard.DisplayManagement;
+using Orchard.DisplayManagement.Implementation;
+using Orchard.Environment.Extensions;
+using Orchard.UI.Admin;
+
+namespace Orchard.Localization.Services {
+    [OrchardFeature("Orchard.Localization.CutlureSelector")]
+    public class AdminDirectionalityFactory : ShapeFactoryEvents {
+        private readonly ILocalizationService _localizationService;
+        private readonly ICultureManager _cultureManager;
+        private readonly WorkContext _workContext;
+
+        public AdminDirectionalityFactory(
+            IWorkContextAccessor workContextAccessor,
+            IShapeFactory shapeFactory,
+            ILocalizationService localizationService,
+            ICultureManager cultureManager) {
+            _localizationService = localizationService;
+            _cultureManager = cultureManager;
+            _workContext = workContextAccessor.GetContext();
+            Shape = shapeFactory;
+        }
+
+        dynamic Shape { get; set; }
+
+        private bool IsActivable() {
+            // activate on front-end only
+            if (AdminFilter.IsApplied(new RequestContext(_workContext.HttpContext, new RouteData())))
+                return true;
+
+            return false;
+        }
+
+        public override void Creating(ShapeCreatingContext context) {
+        }
+
+        public override void Created(ShapeCreatedContext context) {
+            if (!IsActivable()) {
+                return;
+            }
+
+            ContentItem contentItem = context.Shape.ContentItem;
+
+            // if not, check for ContentPart 
+            if (contentItem == null) {
+                ContentPart contentPart = context.Shape.ContentPart;
+                if (contentPart != null) {
+                    contentItem = contentPart.ContentItem;
+                }
+            }
+
+            var culture = (contentItem != null) ? _localizationService.GetContentCulture(contentItem) : _cultureManager.GetSiteCulture();
+
+            var cultureInfo = CultureInfo.GetCultureInfo(culture);
+
+            if (cultureInfo.TextInfo.IsRightToLeft)
+                context.Shape.Attributes.Add("dir", "rtl");
+        }
+    }
+}

src/Orchard.Web/Modules/Orchard.Localization/Services/CultureSelectorFactory.cs

@@ -15,6 +15,7 @@ namespace Orchard.Localization.Services {
             _workContext = workContextAccessor.GetContext();
             Shape = shapeFactory;
         }
+
         dynamic Shape { get; set; }
 
         private bool IsActivable() {
@@ -31,7 +32,6 @@ namespace Orchard.Localization.Services {
                     _workContext.Layout.Header.Add(Shape.UICultureSelector());
                 }
             });
-
         }
     }
 }

src/Orchard.Web/Modules/Orchard.Localization/Views/UICultureSelector.cshtml

@@ -1,5 +1,4 @@
-@using Orchard.ContentManagement
-@using Orchard.Localization.Services
+@using Orchard.Localization.Services
 @{
     var currentCulture = WorkContext.CurrentCulture;
     var supportedCultures = WorkContext.Resolve<ICultureManager>().ListCultures();