Preventing modules from breaking the website if a referenced assembly is missing

--HG--
branch : 1.x

src/Orchard.Web/Core/Dashboard/Services/CompilationErrorBanner.cs

@@ -0,0 +1,24 @@
+using System.Linq;
+using System.Collections.Generic;
+using Orchard.Environment.Extensions;
+using Orchard.Localization;
+using Orchard.UI.Admin.Notification;
+using Orchard.UI.Notify;
+
+namespace Orchard.Core.Dashboard.Services {
+    public class CompilationErrorBanner : INotificationProvider {
+        private readonly ICriticalErrorProvider _errorProvider;
+
+        public CompilationErrorBanner(ICriticalErrorProvider errorProvider) {
+            _errorProvider = errorProvider;
+            T = NullLocalizer.Instance;
+        }
+
+        public Localizer T { get; set; }
+
+        public IEnumerable<NotifyEntry> GetNotifications() {
+            return _errorProvider.GetErrors()
+                .Select(message => new NotifyEntry { Message = message, Type = NotifyType.Error });
+        }
+    }
+}

src/Orchard.Web/Core/Orchard.Core.csproj

@@ -124,6 +124,7 @@
     <Compile Include="Contents\Settings\ContentPartSettings.cs" />
     <Compile Include="Contents\Shapes.cs" />
     <Compile Include="Contents\ViewModels\PublishContentViewModel.cs" />
+    <Compile Include="Dashboard\Services\CompilationErrorBanner.cs" />
     <Compile Include="Navigation\Commands\MenuCommands.cs" />
     <Compile Include="Navigation\Drivers\AdminMenuPartDriver.cs" />
     <Compile Include="Navigation\Handlers\AdminMenuPartHandler.cs" />

src/Orchard.Web/Core/Shapes/Views/Message.cshtml

@@ -1 +1 @@
-<div class="message message-@Model.Type">@Model.Message</div>
+<div class="message message-@Model.Type">@Html.Raw(Html.Encode(Model.Message).Replace("\n", "<br />"))</div>