Fixing absolute URL determination logic.

src/Orchard.Tests/DisplayManagement/Descriptors/StylesheetBindingStrategyTests.cs

@@ -22,7 +22,7 @@ namespace Orchard.Tests.DisplayManagement.Descriptors {
         private TestVirtualPathProvider _testVirtualPathProvider;
 
 
-        protected override void Register(Autofac.ContainerBuilder builder) {
+        protected override void Register(ContainerBuilder builder) {
             _descriptor = new ShellDescriptor { };
             _testViewEngine = new TestViewEngine();
             _testVirtualPathProvider = new TestVirtualPathProvider { TestViewEngine = _testViewEngine };

src/Orchard.Web/Core/Async/BindingStrategies/RequireJS.cs

@@ -0,0 +1,91 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Web;
+using System.Web.Mvc;
+using Orchard.DisplayManagement;
+using Orchard.DisplayManagement.Descriptors;
+using Orchard.Environment.Extensions;
+using Orchard.UI.Resources;
+
+namespace Orchard.Core.Async.BindingStrategies {
+    [OrchardFeature("Async.RequireJS")]
+    public class RequireJS : IShapeTableProvider {
+        public void Discover(ShapeTableBuilder builder) {
+            builder.Describe("AsyncScriptsResourceWriter").OnDisplaying(context => {
+                context.ShapeMetadata.Type = "RequireJSAsyncScriptsWriter";
+            });
+        }
+
+        [Shape]
+        public void RequireJSAsyncScriptsWriter(dynamic Shape, dynamic Display, TextWriter Output) {
+            var defaultSettings = (RequireSettings) Shape.DefaultSettings;
+            var appPath = (string) Shape.AppPath;
+            var resources = (IEnumerable<ResourceRequiredContext>) Shape.Resources;
+
+            if (!resources.Any())
+                return;
+
+            var dictionary = resources.ToDictionary(x => x.Resource.Name);
+            var resourcesWithDependencies = resources.Where(x => x.Resource.Dependencies != null && x.Resource.Dependencies.Any()).ToArray();
+            var scriptBuilder = new StringBuilder();
+
+            // Configure dependencies
+            if (resourcesWithDependencies.Any()) {
+                scriptBuilder.AppendFormat(
+                    "requirejs.config({{" +
+                    "shim: {{\r\n");
+
+                var index = 0;
+                foreach (var resource in resourcesWithDependencies) {
+                    var resourceName = GetModuleName(defaultSettings, appPath, resource);
+                    var dependencies = String.Join(",", resource.Resource.Dependencies.Select(x => String.Format("\"{0}\"", GetModuleName(defaultSettings, appPath, dictionary[x]))));
+                    scriptBuilder.AppendFormat("\"{0}\": [{1}]", resourceName, dependencies);
+
+                    if (index++ < resourcesWithDependencies.Length - 1) {
+                        scriptBuilder.AppendLine(",");
+                    }
+                }
+                
+                scriptBuilder.AppendFormat("}}" +
+                    "}});\r\n");
+            }
+
+            var scripts = resources.Select(x => String.Format("\"{0}\"", GetModuleName(defaultSettings, appPath, x)));            
+            scriptBuilder.AppendFormat("requirejs([{0}]);\r\n", String.Join("\r\n,", scripts));
+
+            var tagBuilder = new TagBuilder("script") {
+                InnerHtml = scriptBuilder.ToString()
+            };
+            tagBuilder.Attributes["type"] = "text/javascript";
+            Output.Write(tagBuilder.ToString(TagRenderMode.Normal));
+        }
+
+        private static string GetModuleName(RequireSettings defaultSettings, string appPath, ResourceRequiredContext resource) {
+            var url = resource.GetResourceUrl(defaultSettings, appPath);
+
+            if (IsAbsoluteUrl(url))
+                return url;
+
+            var path = url.Substring(appPath.Length);
+            var name = TrimStartingSlash(GetPathWithoutExtension(path).ToLowerInvariant());
+            return name;
+        }
+
+        private static string TrimStartingSlash(string path) {
+            return path.StartsWith("/") ? path.Substring(1) : path;
+        }
+
+        private static string GetPathWithoutExtension(string path) {
+            var index = path.LastIndexOf('.');
+            return index > 0 ? path.Substring(0, index) : path;
+        }
+
+        private static bool IsAbsoluteUrl(string url) {
+            var segments = new[] {"http", "https", "ftp", "ftps", "//"};
+            return segments.Any(url.StartsWith);
+        }
+    }
+}

src/Orchard.Web/Core/Async/Filters/RequireJS.cs

@@ -0,0 +1,26 @@
+using System.Web.Mvc;
+using Orchard.Environment.Extensions;
+using Orchard.Mvc.Filters;
+using Orchard.UI.Resources;
+
+namespace Orchard.Core.Async.Filters {
+    [OrchardFeature("Async.RequireJS")]
+    public class RequireJS : FilterProvider, IResultFilter {
+        public RequireJS(IResourceManager resourceManager) {
+            _resourceManager = resourceManager;
+        }
+
+        private readonly IResourceManager _resourceManager;
+
+        public void OnResultExecuting(ResultExecutingContext filterContext) {
+            if (!(filterContext.Result is ViewResult)) {
+                return;
+            }
+
+            _resourceManager.Include("script", "~/Core/Async/Scripts/require.js", null).AtHead();
+        }
+
+        public void OnResultExecuted(ResultExecutedContext filterContext) {
+        }
+    }
+}

src/Orchard.Web/Core/Async/Module.txt

@@ -0,0 +1,14 @@
+Name: Async Scripts
+AntiForgery: enabled
+Author: The Orchard Team
+Website: http://orchardproject.net
+Version: 1.8.1
+OrchardVersion: 1.8
+Description: Provides static file binding strategies and supporting scripts that implement the loading of scripts in an asynchronous fashion.
+Category: Async
+Features:
+    Async.RequireJS:
+        Name: RequireJS
+        Description: Uses RequireJS to load scripts asynchronously.
+        Category: Async
+        Dependencies: Async

src/Orchard.Web/Core/Async/Scripts/Web.config

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <system.webServer>
+    <staticContent>
+      <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="7.00:00:00" />
+    </staticContent>
+
+    <handlers accessPolicy="Script,Read">
+      <!--
+      iis7 - for any request to a file exists on disk, return it via native http module.
+      accessPolicy 'Script' is to allow for a managed 404 page.
+      -->
+      <add name="StaticFile" path="*" verb="*" modules="StaticFileModule" preCondition="integratedMode" resourceType="File" requireAccess="Read" />
+    </handlers>
+  </system.webServer>
+</configuration>

src/Orchard.Web/Core/Async/Scripts/require.js

@@ -0,0 +1,36 @@
+/*
+ RequireJS 2.1.14 Copyright (c) 2010-2014, The Dojo Foundation All Rights Reserved.
+ Available via the MIT or new BSD license.
+ see: http://github.com/jrburke/requirejs for details
+*/
+var requirejs,require,define;
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+Y="undefined"!==typeof opera&&"[object Opera]"===opera.toString(),F={},q={},R=[],M=!1;if("undefined"===typeof define){if("undefined"!==typeof requirejs){if(G(requirejs))return;q=requirejs;requirejs=void 0}"undefined"!==typeof require&&!G(require)&&(q=require,require=void 0);g=requirejs=function(b,c,d,e){var n,p="_";!H(b)&&"string"!==typeof b&&(n=b,H(c)?(b=c,c=d,d=e):b=[]);n&&n.context&&(p=n.context);(e=m(F,p))||(e=F[p]=g.s.newContext(p));n&&e.configure(n);return e.require(b,c,d)};g.config=function(b){return g(b)};
+g.nextTick="undefined"!==typeof setTimeout?function(b){setTimeout(b,4)}:function(b){b()};require||(require=g);g.version="2.1.14";g.jsExtRegExp=/^\/|:|\?|\.js$/;g.isBrowser=z;x=g.s={contexts:F,newContext:ga};g({});v(["toUrl","undef","defined","specified"],function(b){g[b]=function(){var c=F._;return c.require[b].apply(c,arguments)}});if(z&&(y=x.head=document.getElementsByTagName("head")[0],D=document.getElementsByTagName("base")[0]))y=x.head=D.parentNode;g.onError=ca;g.createNode=function(b){var c=
+b.xhtml?document.createElementNS("http://www.w3.org/1999/xhtml","html:script"):document.createElement("script");c.type=b.scriptType||"text/javascript";c.charset="utf-8";c.async=!0;return c};g.load=function(b,c,d){var e=b&&b.config||{};if(z)return e=g.createNode(e,c,d),e.setAttribute("data-requirecontext",b.contextName),e.setAttribute("data-requiremodule",c),e.attachEvent&&!(e.attachEvent.toString&&0>e.attachEvent.toString().indexOf("[native code"))&&!Y?(M=!0,e.attachEvent("onreadystatechange",b.onScriptLoad)):
+(e.addEventListener("load",b.onScriptLoad,!1),e.addEventListener("error",b.onScriptError,!1)),e.src=d,J=e,D?y.insertBefore(e,D):y.appendChild(e),J=null,e;if(ea)try{importScripts(d),b.completeLoad(c)}catch(m){b.onError(C("importscripts","importScripts failed for "+c+" at "+d,m,[c]))}};z&&!q.skipDataMain&&T(document.getElementsByTagName("script"),function(b){y||(y=b.parentNode);if(I=b.getAttribute("data-main"))return s=I,q.baseUrl||(E=s.split("/"),s=E.pop(),O=E.length?E.join("/")+"/":"./",q.baseUrl=
+O),s=s.replace(Q,""),g.jsExtRegExp.test(s)&&(s=I),q.deps=q.deps?q.deps.concat(s):[s],!0});define=function(b,c,d){var e,g;"string"!==typeof b&&(d=c,c=b,b=null);H(c)||(d=c,c=null);!c&&G(d)&&(c=[],d.length&&(d.toString().replace(ka,"").replace(la,function(b,d){c.push(d)}),c=(1===d.length?["require"]:["require","exports","module"]).concat(c)));if(M){if(!(e=J))N&&"interactive"===N.readyState||T(document.getElementsByTagName("script"),function(b){if("interactive"===b.readyState)return N=b}),e=N;e&&(b||
+(b=e.getAttribute("data-requiremodule")),g=F[e.getAttribute("data-requirecontext")])}(g?g.defQueue:R).push([b,c,d])};define.amd={jQuery:!0};g.exec=function(b){return eval(b)};g(q)}})(this);

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

@@ -73,6 +73,8 @@
     <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Async\BindingStrategies\RequireJS.cs" />
+    <Compile Include="Async\Filters\RequireJS.cs" />
     <Compile Include="Common\Controllers\ErrorController.cs" />
     <Compile Include="Common\DateEditor\DateEditorSettings.cs" />
     <Compile Include="Common\OwnerEditor\OwnerEditorSettings.cs" />
@@ -277,6 +279,8 @@
     <Compile Include="XmlRpc\XmlRpcContext.cs" />
   </ItemGroup>
   <ItemGroup>
+    <Content Include="Async\Module.txt" />
+    <Content Include="Async\Scripts\require.js" />
     <Content Include="Common\Module.txt" />
     <Content Include="Common\Styles\datetime-editor.css" />
     <Content Include="Common\Views\DefinitionTemplates\BodyTypePartSettings.cshtml" />
@@ -367,7 +371,6 @@
     <Content Include="Common\Views\Parts.Common.Body.Summary.cshtml" />
   </ItemGroup>
   <ItemGroup>
-    <Folder Include="App_Data\" />
     <Folder Include="Views\Gamma\" />
   </ItemGroup>
   <ItemGroup>
@@ -559,6 +562,11 @@
     <Content Include="Containers\Views\EditorTemplates\ContainerWidget.cshtml" />
     <Content Include="Containers\Views\Parts.ContainerWidget.cshtml" />
   </ItemGroup>
+  <ItemGroup>
+    <Content Include="Async\Scripts\Web.config">
+      <SubType>Designer</SubType>
+    </Content>
+  </ItemGroup>
   <PropertyGroup>
     <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
     <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>

src/Orchard.Web/Core/Shapes/CoreShapes.cs

@@ -30,7 +30,7 @@ namespace Orchard.Core.Shapes {
         private readonly Work<IShapeFactory> _shapeFactory;
 
         public CoreShapes(
-            Work<WorkContext> workContext, 
+            Work<WorkContext> workContext,
             Work<IResourceManager> resourceManager,
             Work<IHttpContextAccessor> httpContextAccessor,
             Work<IShapeFactory> shapeFactory
@@ -44,7 +44,7 @@ namespace Orchard.Core.Shapes {
         }
 
         public Localizer T { get; set; }
-        public dynamic New { get { return _shapeFactory.Value;  } }
+        public dynamic New { get { return _shapeFactory.Value; } }
 
         public void Discover(ShapeTableBuilder builder) {
             // the root page shape named 'Layout' is wrapped with 'Document'
@@ -54,7 +54,7 @@ namespace Orchard.Core.Shapes {
                 .OnCreating(creating => creating.Create = () => new ZoneHolding(() => creating.New.Zone()))
                 .OnCreated(created => {
                     var layout = created.Shape;
-                    
+
                     layout.Head = created.New.DocumentZone(ZoneName: "Head");
                     layout.Body = created.New.DocumentZone(ZoneName: "Body");
                     layout.Tail = created.New.DocumentZone(ZoneName: "Tail");
@@ -104,7 +104,7 @@ namespace Orchard.Core.Shapes {
                     string menuName = menuItem.Menu.MenuName;
                     string contentType = null;
                     if (menuItem.Content != null) {
-                        contentType = ((IContent) menuItem.Content).ContentItem.ContentType;
+                        contentType = ((IContent)menuItem.Content).ContentItem.ContentType;
                     }
 
                     // MenuItemLink__[ContentType] e.g. MenuItemLink-HtmlMenuItem
@@ -119,7 +119,7 @@ namespace Orchard.Core.Shapes {
                     if (contentType != null) {
                         menuItem.Metadata.Alternates.Add("MenuItemLink__" + EncodeAlternateElement(menuName) + "__" + EncodeAlternateElement(contentType));
                     }
-                    
+
                 });
 
             builder.Describe("LocalMenu")
@@ -130,7 +130,7 @@ namespace Orchard.Core.Shapes {
                     menu.Classes.Add("localmenu");
                     menu.Metadata.Alternates.Add("LocalMenu__" + EncodeAlternateElement(menuName));
                 });
-            
+
             builder.Describe("LocalMenuItem")
                 .OnDisplaying(displaying => {
                     var menuItem = displaying.Shape;
@@ -218,8 +218,8 @@ namespace Orchard.Core.Shapes {
                 .OnDisplaying(displaying => {
                     var resource = displaying.Shape;
                     string url = resource.Url;
-                    string fileName = StaticFileBindingStrategy.GetAlternateShapeNameFromFileName(url);
+                    var fileName = StaticFileBindingStrategy.GetAlternateShapeNameFromFileName(url);
-                    if (!string.IsNullOrEmpty(fileName)) {
+                    if (!String.IsNullOrEmpty(fileName)) {
                         resource.Metadata.Alternates.Add("Style__" + fileName);
                     }
                 });
@@ -228,7 +228,7 @@ namespace Orchard.Core.Shapes {
                 .OnDisplaying(displaying => {
                     var resource = displaying.Shape;
                     string url = resource.Url;
-                    string fileName = StaticFileBindingStrategy.GetAlternateShapeNameFromFileName(url);
+                    var fileName = StaticFileBindingStrategy.GetAlternateShapeNameFromFileName(url);
                     if (!string.IsNullOrEmpty(fileName)) {
                         resource.Metadata.Alternates.Add("Script__" + fileName);
                     }
@@ -238,7 +238,7 @@ namespace Orchard.Core.Shapes {
                 .OnDisplaying(displaying => {
                     var resource = displaying.Shape;
                     string url = resource.Url;
-                    string fileName = StaticFileBindingStrategy.GetAlternateShapeNameFromFileName(url);
+                    var fileName = StaticFileBindingStrategy.GetAlternateShapeNameFromFileName(url);
                     if (!string.IsNullOrEmpty(fileName)) {
                         resource.Metadata.Alternates.Add("Resource__" + fileName);
                     }
@@ -329,14 +329,14 @@ namespace Orchard.Core.Shapes {
 
         [Shape]
         public void Metas(TextWriter Output) {
-            foreach (var meta in _resourceManager.Value.GetRegisteredMetas() ) {
+            foreach (var meta in _resourceManager.Value.GetRegisteredMetas()) {
                 Output.WriteLine(meta.GetTag());
             }
         }
 
         [Shape]
         public void HeadLinks(TextWriter Output) {
-            foreach (var link in _resourceManager.Value.GetRegisteredLinks() ) {
+            foreach (var link in _resourceManager.Value.GetRegisteredLinks()) {
                 Output.WriteLine(link.GetTag());
             }
         }
@@ -354,7 +354,7 @@ namespace Orchard.Core.Shapes {
 
         [Shape]
         public void Script(HtmlHelper Html, TextWriter Output, ResourceDefinition Resource, string Url, string Condition, Dictionary<string, string> TagAttributes) {
-            // do not write to Output directly as Styles are rendered in Zones
+            // do not write to Output directly as Scripts are rendered in Zones
             ResourceManager.WriteResource(Html.ViewContext.Writer, Resource, Url, Condition, TagAttributes);
         }
 
@@ -393,27 +393,80 @@ namespace Orchard.Core.Shapes {
             };
             var requiredResources = _resourceManager.Value.BuildRequiredResources(resourceType);
             var appPath = _httpContextAccessor.Value.Current().Request.ApplicationPath;
-            foreach (var context in requiredResources.Where(r =>
+            var requiredResourcesQuery = requiredResources.Where(r =>
                 (includeLocation.HasValue ? r.Settings.Location == includeLocation.Value : true) &&
-                (excludeLocation.HasValue ? r.Settings.Location != excludeLocation.Value : true))) {
+                (excludeLocation.HasValue ? r.Settings.Location != excludeLocation.Value : true));
+            var filteredResources = requiredResourcesQuery.ToArray();
 
-                var path = context.GetResourceUrl(defaultSettings, appPath);
+            var resourceWriter = New.ResourceWriter(DefaultSettings: defaultSettings, AppPath: appPath, Resources: filteredResources);
+
+            switch (resourceType) {
+                case "stylesheet":
+                    resourceWriter.Metadata.Type = "StyleSheetsResourceWriter";
+                    break;
+                case "script":
+                    var scripts = filteredResources.Where(x => !x.Settings.LoadAsync);
+                    var asyncScripts = filteredResources.Where(x => x.Settings.LoadAsync);
+
+                    resourceWriter.Metadata.Type = "ScriptsResourceWriter";
+                    resourceWriter.Add(New.SyncScriptsResourceWriter(DefaultSettings: defaultSettings, AppPath: appPath, Resources: scripts));
+                    resourceWriter.Add(New.AsyncScriptsResourceWriter(DefaultSettings: defaultSettings, AppPath: appPath, Resources: asyncScripts));
+                    break;
+                default:
+                    resourceWriter.Metadata.Type = "DefaultResourceWriter";
+                    break;
+            }
+
+            Output.Write(Display(resourceWriter));
+        }
+
+        [Shape]
+        public void DefaultResourceWriter(dynamic Display, TextWriter Output, RequireSettings DefaultSettings, string AppPath, IEnumerable<ResourceRequiredContext> Resources) {
+            foreach (var context in Resources) {
+                var path = context.GetResourceUrl(DefaultSettings, AppPath);
                 var condition = context.Settings.Condition;
                 var attributes = context.Settings.HasAttributes ? context.Settings.Attributes : null;
-                IHtmlString result;
+                IHtmlString result = Display.Resource(Url: path, Condition: condition, Resource: context.Resource, TagAttributes: attributes, Settings: context.Settings);
-                if (resourceType == "stylesheet") {
-                    result = Display.Style(Url: path, Condition: condition, Resource: context.Resource, TagAttributes: attributes);
-                }
-                else if (resourceType == "script") { 
-                    result = Display.Script(Url: path, Condition: condition, Resource: context.Resource, TagAttributes: attributes);
-                }
-                else {
-                    result = Display.Resource(Url: path, Condition: condition, Resource: context.Resource, TagAttributes: attributes);
-                }
                 Output.Write(result);
             }
         }
 
+        [Shape]
+        public void StyleSheetsResourceWriter(dynamic Display, TextWriter Output, RequireSettings DefaultSettings, string AppPath, IEnumerable<ResourceRequiredContext> Resources) {
+            foreach (var context in Resources) {
+                var path = context.GetResourceUrl(DefaultSettings, AppPath);
+                var condition = context.Settings.Condition;
+                var attributes = context.Settings.HasAttributes ? context.Settings.Attributes : null;
+                IHtmlString result = Display.Style(Url: path, Condition: condition, Resource: context.Resource, TagAttributes: attributes, Settings: context.Settings);
+                Output.Write(result);
+            }
+        }
+
+        [Shape]
+        public void ScriptsResourceWriter(dynamic Shape, dynamic Display, TextWriter Output, RequireSettings DefaultSettings, string AppPath, IEnumerable<ResourceRequiredContext> Resources) {
+            foreach (var child in Shape) {
+                Output.Write(Display(child));
+            }
+        }
+
+        [Shape]
+        public void SyncScriptsResourceWriter(dynamic Display, TextWriter Output, RequireSettings DefaultSettings, string AppPath, IEnumerable<ResourceRequiredContext> Resources) {
+            foreach (var context in Resources) {
+                var path = context.GetResourceUrl(DefaultSettings, AppPath);
+                var condition = context.Settings.Condition;
+                var attributes = context.Settings.HasAttributes ? context.Settings.Attributes : null;
+                IHtmlString result = Display.Script(Url: path, Condition: condition, Resource: context.Resource, TagAttributes: attributes, Settings: context.Settings);
+                Output.Write(result);
+            }
+        }
+
+        [Shape]
+        public void AsyncScriptsResourceWriter(dynamic Shape, dynamic Display, TextWriter Output, RequireSettings DefaultSettings, string AppPath, IEnumerable<ResourceRequiredContext> Resources) {
+            // The default implementation is the same as the synchronous scripts resource writer.
+            Shape.Metadata.Type = "SyncScriptsResourceWriter";
+            Output.Write(Display(Shape));
+        }
+
         [Shape]
         public IHtmlString Pager_Links(dynamic Shape, dynamic Display,
             HtmlHelper Html,
@@ -442,7 +495,7 @@ namespace Orchard.Core.Shapes {
             var numberOfPagesToShow = Quantity ?? 0;
             if (Quantity == null || Quantity < 0)
                 numberOfPagesToShow = 7;
-    
+
             var totalPageCount = (int)Math.Ceiling(TotalItemCount / pageSize);
 
             var firstText = FirstText ?? T("<<");
@@ -467,7 +520,7 @@ namespace Orchard.Core.Shapes {
                 if (shapeRouteData == null) {
                     var route = shapeRoute as RouteData;
                     if (route != null) {
-                        shapeRouteData = (route).Values;    
+                        shapeRouteData = (route).Values;
                     }
                 }
 
@@ -535,7 +588,7 @@ namespace Orchard.Core.Shapes {
             if (lastPage < totalPageCount && numberOfPagesToShow > 0) {
                 Shape.Add(New.Pager_Gap(Value: gapText, Pager: Shape));
             }
-    
+
             // next and last pages
             if (Page < totalPageCount) {
                 // next
@@ -551,47 +604,47 @@ namespace Orchard.Core.Shapes {
 
         [Shape]
         public IHtmlString Pager(dynamic Shape, dynamic Display) {
-            Shape.Metadata.Alternates.Clear(); 
+            Shape.Metadata.Alternates.Clear();
             Shape.Metadata.Type = "Pager_Links";
             return Display(Shape);
         }
 
         [Shape]
         public IHtmlString Pager_First(dynamic Shape, dynamic Display) {
-            Shape.Metadata.Alternates.Clear(); 
+            Shape.Metadata.Alternates.Clear();
             Shape.Metadata.Type = "Pager_Link";
             return Display(Shape);
         }
-        
+
         [Shape]
         public IHtmlString Pager_Previous(dynamic Shape, dynamic Display) {
-            Shape.Metadata.Alternates.Clear(); 
+            Shape.Metadata.Alternates.Clear();
             Shape.Metadata.Type = "Pager_Link";
             return Display(Shape);
         }
-        
+
         [Shape]
         public IHtmlString Pager_CurrentPage(HtmlHelper Html, dynamic Display, object Value) {
             var tagBuilder = new TagBuilder("span");
             tagBuilder.InnerHtml = EncodeOrDisplay(Value, Display, Html).ToString();
-            
+
             return MvcHtmlString.Create(tagBuilder.ToString());
         }
-        
+
         [Shape]
         public IHtmlString Pager_Next(dynamic Shape, dynamic Display) {
-            Shape.Metadata.Alternates.Clear(); 
+            Shape.Metadata.Alternates.Clear();
             Shape.Metadata.Type = "Pager_Link";
             return Display(Shape);
         }
-        
+
         [Shape]
         public IHtmlString Pager_Last(dynamic Shape, dynamic Display) {
-            Shape.Metadata.Alternates.Clear(); 
+            Shape.Metadata.Alternates.Clear();
             Shape.Metadata.Type = "Pager_Link";
             return Display(Shape);
         }
-        
+
         [Shape]
         public IHtmlString Pager_Link(HtmlHelper Html, dynamic Shape, dynamic Display, object Value) {
             Shape.Metadata.Alternates.Clear();
@@ -645,7 +698,7 @@ namespace Orchard.Core.Shapes {
 
             if (Items == null)
                 return;
-            
+
             // prevent multiple enumerations
             var items = Items.ToList();
 
@@ -655,7 +708,7 @@ namespace Orchard.Core.Shapes {
                 return;
 
             string listTagName = null;
-            
+
             if (Tag != "-") {
                 listTagName = string.IsNullOrEmpty(Tag) ? "ul" : Tag;
             }
@@ -664,7 +717,7 @@ namespace Orchard.Core.Shapes {
 
             string itemTagName = null;
             if (ItemTag != "-") {
-             itemTagName = string.IsNullOrEmpty(ItemTag) ? "li" : ItemTag;
+                itemTagName = string.IsNullOrEmpty(ItemTag) ? "li" : ItemTag;
             }
 
             if (listTag != null) {
@@ -677,7 +730,7 @@ namespace Orchard.Core.Shapes {
             // give the item shape the possibility to alter its container tag
             var index = 0;
             foreach (var item in items) {
-                
+
                 var itemTag = String.IsNullOrEmpty(itemTagName) ? null : GetTagBuilder(itemTagName, null, ItemClasses, ItemAttributes);
 
                 if (item is IShape) {
@@ -698,7 +751,7 @@ namespace Orchard.Core.Shapes {
             }
 
             index = 0;
-            foreach(var itemOutput in itemOutputs) {
+            foreach (var itemOutput in itemOutputs) {
                 var itemTag = itemTags[index];
 
                 if (itemTag != null) {
@@ -792,7 +845,7 @@ namespace Orchard.Core.Shapes {
             if (Value is IShape) {
                 return Display(Value).ToString();
             }
-            
+
             return Html.Raw(Html.Encode(Value.ToString()));
         }
     }

src/Orchard/DisplayManagement/Descriptors/ResourceBindingStrategy/ScriptBindingStrategy.cs

@@ -0,0 +1,52 @@
+using System;
+using Orchard.Environment.Descriptor.Models;
+using Orchard.Environment.Extensions;
+using Orchard.FileSystems.VirtualPath;
+using Orchard.UI.Resources;
+
+namespace Orchard.DisplayManagement.Descriptors.ResourceBindingStrategy {
+    /// <summary>
+    /// Discovers .js files and turns them into Script__<filename> shapes.
+    /// </summary>
+    public class ScriptBindingStrategy : StaticFileBindingStrategy, IShapeTableProvider {
+        public ScriptBindingStrategy(IExtensionManager extensionManager, ShellDescriptor shellDescriptor, IVirtualPathProvider virtualPathProvider)
+            : base(extensionManager, shellDescriptor, virtualPathProvider) {
+        }
+
+        public override string GetFileExtension() {
+            return ".js";
+        }
+
+        public override string GetFolder() {
+            return "Scripts";
+        }
+
+        public override string GetShapePrefix() {
+            return "Script__";
+        }
+
+        public virtual string GetShapeName() {
+            return "Script";
+        }
+
+        public override void Discover(ShapeTableBuilder builder) {
+            base.Discover(builder);
+
+            builder.Describe("Script")
+                .OnDisplaying(displaying => {
+                    var resourceShape = displaying.Shape;
+                    var url = (string)resourceShape.Url;
+                    var settings = (RequireSettings)resourceShape.Settings;
+                    if (settings.LoadAsync) {
+                        displaying.ShapeMetadata.Alternates.Clear();
+                        displaying.ShapeMetadata.Type = GetShapeName();
+
+                        var fileName = GetAlternateShapeNameFromFileName(url);
+                        if (!String.IsNullOrEmpty(fileName)) {
+                            resourceShape.Metadata.Alternates.Add(GetShapePrefix() + fileName);
+                        }
+                    }
+                });
+        }
+    }
+}

src/Orchard/DisplayManagement/Descriptors/ResourceBindingStrategy/StaticFileBindingStrategy.cs

@@ -0,0 +1,110 @@
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using Orchard.Environment.Descriptor.Models;
+using Orchard.Environment.Extensions;
+using Orchard.Environment.Extensions.Models;
+using Orchard.FileSystems.VirtualPath;
+using Orchard.UI.Resources;
+using Orchard.Utility.Extensions;
+
+namespace Orchard.DisplayManagement.Descriptors.ResourceBindingStrategy {
+    /// <summary>
+    /// Discovers static files and turns them into shapes.
+    /// </summary>
+    public abstract class StaticFileBindingStrategy {
+        private readonly IExtensionManager _extensionManager;
+        private readonly ShellDescriptor _shellDescriptor;
+        private readonly IVirtualPathProvider _virtualPathProvider;
+        private static readonly char[] unsafeCharList = "/:?#[]@!&'()*+,;=\r\n\t\f\" <>.-_".ToCharArray();
+
+        protected StaticFileBindingStrategy(IExtensionManager extensionManager, ShellDescriptor shellDescriptor, IVirtualPathProvider virtualPathProvider) {
+            _extensionManager = extensionManager;
+            _shellDescriptor = shellDescriptor;
+            _virtualPathProvider = virtualPathProvider;
+        }
+
+        public abstract string GetFileExtension();
+        public abstract string GetFolder();
+        public abstract string GetShapePrefix();
+
+        public virtual void WriteResource(dynamic display, TextWriter output, ResourceDefinition resource, string url, string condition, Dictionary<string, string> attributes) {
+            ResourceManager.WriteResource(output, resource, display.Url, condition, attributes);
+        }
+
+        private static string SafeName(string name) {
+            if (string.IsNullOrWhiteSpace(name))
+                return String.Empty;
+
+            return name.Strip(unsafeCharList).ToLowerInvariant();
+        }
+
+        public static string GetAlternateShapeNameFromFileName(string fileName) {
+            if (fileName == null) {
+                throw new ArgumentNullException("fileName");
+            }
+            string shapeName;
+            if (Uri.IsWellFormedUriString(fileName, UriKind.Absolute)) {
+                var uri = new Uri(fileName);
+                shapeName = uri.Authority + "$" + uri.AbsolutePath + "$" + uri.Query;
+            }
+            else {
+                shapeName = Path.GetFileNameWithoutExtension(fileName);
+            }
+            return SafeName(shapeName);
+        }
+
+        private static IEnumerable<ExtensionDescriptor> Once(IEnumerable<FeatureDescriptor> featureDescriptors) {
+            var once = new ConcurrentDictionary<string, object>();
+            return featureDescriptors.Select(fd => fd.Extension).Where(ed => once.TryAdd(ed.Id, null)).ToList();
+        }
+
+        public virtual void Discover(ShapeTableBuilder builder) {
+            var availableFeatures = _extensionManager.AvailableFeatures();
+            var activeFeatures = availableFeatures.Where(FeatureIsEnabled);
+            var activeExtensions = Once(activeFeatures);
+
+            var hits = activeExtensions.SelectMany(extensionDescriptor => {
+                var basePath = Path.Combine(extensionDescriptor.Location, extensionDescriptor.Id).Replace(Path.DirectorySeparatorChar, '/');
+                var virtualPath = Path.Combine(basePath, GetFolder()).Replace(Path.DirectorySeparatorChar, '/');
+                var shapes = _virtualPathProvider.ListFiles(virtualPath)
+                    .Select(Path.GetFileName)
+                    .Where(fileName => string.Equals(Path.GetExtension(fileName), GetFileExtension(), StringComparison.OrdinalIgnoreCase))
+                    .Select(fileName => new {
+                        fileName = Path.GetFileNameWithoutExtension(fileName),
+                        fileVirtualPath = Path.Combine(virtualPath, fileName).Replace(Path.DirectorySeparatorChar, '/'),
+                        shapeType = GetShapePrefix() + GetAlternateShapeNameFromFileName(fileName),
+                        extensionDescriptor
+                    });
+                return shapes;
+            });
+
+            foreach (var iter in hits) {
+                var hit = iter;
+                var featureDescriptors = hit.extensionDescriptor.Features.Where(fd => fd.Id == hit.extensionDescriptor.Id);
+                foreach (var featureDescriptor in featureDescriptors) {
+                    builder.Describe(iter.shapeType)
+                        .From(new Feature { Descriptor = featureDescriptor })
+                        .BoundAs(
+                            hit.fileVirtualPath,
+                            shapeDescriptor => displayContext => {
+                                var shape = ((dynamic)displayContext.Value);
+                                var output = displayContext.ViewContext.Writer;
+                                ResourceDefinition resource = shape.Resource;
+                                string condition = shape.Condition;
+                                Dictionary<string, string> attributes = shape.TagAttributes;
+                                WriteResource(shape, output, resource, hit.fileVirtualPath, condition, attributes);
+                                return null;
+                            });
+                }
+            }
+        }
+
+        private bool FeatureIsEnabled(FeatureDescriptor fd) {
+            return (DefaultExtensionTypes.IsTheme(fd.Extension.ExtensionType) && (fd.Id == "TheAdmin" || fd.Id == "SafeMode")) ||
+                   _shellDescriptor.Features.Any(sf => sf.Name == fd.Id);
+        }
+    }
+}

src/Orchard/DisplayManagement/Descriptors/ResourceBindingStrategy/StylesheetBindingStrategy.cs

@@ -1,110 +1,14 @@
-using System;
+using Orchard.Environment.Descriptor.Models;
-using System.Collections.Concurrent;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using Orchard.Environment.Descriptor.Models;
 using Orchard.Environment.Extensions;
-using Orchard.Environment.Extensions.Models;
 using Orchard.FileSystems.VirtualPath;
-using Orchard.UI.Resources;
-using Orchard.Utility.Extensions;
 
 namespace Orchard.DisplayManagement.Descriptors.ResourceBindingStrategy {
-    // discovers static files and turns them into shapes.
+    /// <summary>
-    public abstract class StaticFileBindingStrategy {
+    /// Discovers .css files and turns them into Style__<filename> shapes.
-        private readonly IExtensionManager _extensionManager;
+    /// </summary>
-        private readonly ShellDescriptor _shellDescriptor;
-        private readonly IVirtualPathProvider _virtualPathProvider;
-        private static readonly char[] unsafeCharList = "/:?#[]@!&'()*+,;=\r\n\t\f\" <>.-_".ToCharArray();
-
-        protected StaticFileBindingStrategy(IExtensionManager extensionManager, ShellDescriptor shellDescriptor, IVirtualPathProvider virtualPathProvider) {
-            _extensionManager = extensionManager;
-            _shellDescriptor = shellDescriptor;
-            _virtualPathProvider = virtualPathProvider;
-        }
-
-        public abstract string GetFileExtension();
-        public abstract string GetFolder();
-        public abstract string GetShapePrefix();
-
-        private static string SafeName(string name) {
-            if (string.IsNullOrWhiteSpace(name))
-                return String.Empty;
-
-            return name.Strip(unsafeCharList).ToLowerInvariant();
-        }
-
-        public static string GetAlternateShapeNameFromFileName(string fileName) {
-            if (fileName == null) {
-                throw new ArgumentNullException("fileName");
-            }
-            string shapeName;
-            if (Uri.IsWellFormedUriString(fileName, UriKind.Absolute)) {
-                var uri = new Uri(fileName);
-                shapeName = uri.Authority + "$" + uri.AbsolutePath + "$" + uri.Query;
-            }
-            else {
-                shapeName = Path.GetFileNameWithoutExtension(fileName);
-            }
-            return SafeName(shapeName);
-        }
-
-        private static IEnumerable<ExtensionDescriptor> Once(IEnumerable<FeatureDescriptor> featureDescriptors) {
-            var once = new ConcurrentDictionary<string, object>();
-            return featureDescriptors.Select(fd => fd.Extension).Where(ed => once.TryAdd(ed.Id, null)).ToList();
-        }
-
-        public void Discover(ShapeTableBuilder builder) {
-            var availableFeatures = _extensionManager.AvailableFeatures();
-            var activeFeatures = availableFeatures.Where(FeatureIsEnabled);
-            var activeExtensions = Once(activeFeatures);
-
-            var hits = activeExtensions.SelectMany(extensionDescriptor => {
-                var basePath = Path.Combine(extensionDescriptor.Location, extensionDescriptor.Id).Replace(Path.DirectorySeparatorChar, '/');
-                var virtualPath = Path.Combine(basePath, GetFolder()).Replace(Path.DirectorySeparatorChar, '/');
-                var shapes = _virtualPathProvider.ListFiles(virtualPath)
-                    .Select(Path.GetFileName)
-                    .Where(fileName => string.Equals(Path.GetExtension(fileName), GetFileExtension(), StringComparison.OrdinalIgnoreCase))
-                    .Select(cssFileName => new {
-                        fileName = Path.GetFileNameWithoutExtension(cssFileName),
-                        fileVirtualPath = Path.Combine(virtualPath, cssFileName).Replace(Path.DirectorySeparatorChar, '/'),
-                        shapeType = GetShapePrefix() + GetAlternateShapeNameFromFileName(cssFileName),
-                        extensionDescriptor
-                    });
-                return shapes;
-            });
-
-            foreach (var iter in hits) {
-                var hit = iter;
-                var featureDescriptors = hit.extensionDescriptor.Features.Where(fd => fd.Id == hit.extensionDescriptor.Id);
-                foreach (var featureDescriptor in featureDescriptors) {
-                    builder.Describe(iter.shapeType)
-                        .From(new Feature {Descriptor = featureDescriptor})
-                        .BoundAs(
-                            hit.fileVirtualPath,
-                            shapeDescriptor => displayContext => {
-                                                   var shape = ((dynamic) displayContext.Value);
-                                                   var output = displayContext.ViewContext.Writer;
-                                                   ResourceDefinition resource = shape.Resource;
-                                                   string condition = shape.Condition;
-                                                   Dictionary<string, string> attributes = shape.TagAttributes;
-                                                   ResourceManager.WriteResource(output, resource, hit.fileVirtualPath, condition, attributes);
-                                                   return null;
-                                               });
-                }
-            }
-        }
-
-        private bool FeatureIsEnabled(FeatureDescriptor fd) {
-            return (DefaultExtensionTypes.IsTheme(fd.Extension.ExtensionType) && (fd.Id == "TheAdmin" || fd.Id == "SafeMode")) ||
-                _shellDescriptor.Features.Any(sf => sf.Name == fd.Id);
-        }
-    }
-
-    // discovers .css files and turns them into Style__<filename> shapes.
     public class StylesheetBindingStrategy : StaticFileBindingStrategy, IShapeTableProvider {
-        public StylesheetBindingStrategy(IExtensionManager extensionManager, ShellDescriptor shellDescriptor, IVirtualPathProvider virtualPathProvider) : base(extensionManager, shellDescriptor, virtualPathProvider) {
+        public StylesheetBindingStrategy(IExtensionManager extensionManager, ShellDescriptor shellDescriptor, IVirtualPathProvider virtualPathProvider)
+            : base(extensionManager, shellDescriptor, virtualPathProvider) {
         }
 
         public override string GetFileExtension() {

src/Orchard/Orchard.Framework.csproj

@@ -198,6 +198,8 @@
     <Compile Include="Data\ISessionConfigurationEvents.cs" />
     <Compile Include="Data\ISessionInterceptor.cs" />
     <Compile Include="DisplayManagement\Descriptors\PlacementInfo.cs" />
+    <Compile Include="DisplayManagement\Descriptors\ResourceBindingStrategy\ScriptBindingStrategy.cs" />
+    <Compile Include="DisplayManagement\Descriptors\ResourceBindingStrategy\StaticFileBindingStrategy.cs" />
     <Compile Include="DisplayManagement\Descriptors\ResourceBindingStrategy\StylesheetBindingStrategy.cs" />
     <Compile Include="DisplayManagement\Descriptors\ShapeDescriptor.cs" />
     <Compile Include="DisplayManagement\Descriptors\ShapeAlteration.cs" />
@@ -337,6 +339,7 @@
     <Compile Include="UI\Navigation\PagerParameters.cs" />
     <Compile Include="UI\Resources\IResourceManifestProvider.cs" />
     <Compile Include="UI\Resources\ResourceManifestBuilder.cs" />
+    <Compile Include="UI\Resources\ResourceSynchronicity.cs" />
     <Compile Include="UI\Zones\LayoutWorkContext.cs" />
     <Compile Include="UI\Zones\ZoneHoldingBehavior.cs" />
     <Compile Include="Mvc\ViewEngines\ThemeAwareness\ConfiguredEnginesCache.cs" />

src/Orchard/UI/Resources/RequireSettings.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Linq;
 using System.Collections.Generic;
-using System.Web.Mvc;
 
 namespace Orchard.UI.Resources {
     public class RequireSettings {
@@ -14,6 +13,7 @@ namespace Orchard.UI.Resources {
         public bool DebugMode { get; set; }
         public bool CdnMode { get; set; }
         public ResourceLocation Location { get; set; }
+        public ResourceSynchronicity Synchronicity { get; set; }
         public string Condition { get; set; }
         public Action<ResourceDefinition> InlineDefinition { get; set; }
         public Dictionary<string, string> Attributes {
@@ -49,6 +49,19 @@ namespace Orchard.UI.Resources {
             return this;
         }
 
+        public RequireSettings Async(bool async = true) {
+            return UseSynchronicity(async ? ResourceSynchronicity.Asynchronous : ResourceSynchronicity.Synchronous);
+        }
+
+        public RequireSettings UseSynchronicity(ResourceSynchronicity synchronicity) {
+            Synchronicity = (ResourceSynchronicity)Math.Max((int)Synchronicity, (int)synchronicity);
+            return this;
+        }
+
+        public bool LoadAsync {
+            get { return Synchronicity == ResourceSynchronicity.Asynchronous && Location == ResourceLocation.Unspecified; }
+        }
+
         public RequireSettings UseCulture(string cultureName) {
             if (!String.IsNullOrEmpty(cultureName)) {
                 Culture = cultureName;
@@ -129,6 +142,7 @@ namespace Orchard.UI.Resources {
                 Name = Name,
                 Type = Type
             }).AtLocation(Location).AtLocation(other.Location)
+                .UseSynchronicity(Synchronicity).UseSynchronicity(other.Synchronicity)
                 .WithBasePath(BasePath).WithBasePath(other.BasePath)
                 .UseCdn(CdnMode).UseCdn(other.CdnMode)
                 .UseDebugMode(DebugMode).UseDebugMode(other.DebugMode)

src/Orchard/UI/Resources/ResourceSynchronicity.cs

@@ -0,0 +1,7 @@
+namespace Orchard.UI.Resources {
+    public enum ResourceSynchronicity {
+        Unspecified,
+        Asynchronous,
+        Synchronous,
+    }
+}

src/Orchard/Utility/Extensions/HttpRequestExtensions.cs

@@ -85,7 +85,7 @@ namespace Orchard.Utility.Extensions {
                 return true;
             }
 
-            // at this point, check for an fully qualified url
+            // at this point, check for a fully qualified url
             try {
                 var uri = new Uri(url);
                 if (uri.Authority.Equals(request.Headers["Host"], StringComparison.OrdinalIgnoreCase)) {
@@ -106,7 +106,7 @@ namespace Orchard.Utility.Extensions {
                 return false;
             }
             catch {
-                // mall-formed url e.g, "abcdef"
+                // malformed url e.g, "abcdef"
                 return false;
             }
 

src/Orchard/Utility/Extensions/StringExtensions.cs

@@ -324,5 +324,9 @@ namespace Orchard.Utility.Extensions {
             var pattern = String.Format("({0})", String.Join("|", replacements.Keys.ToArray()));
             return Regex.Replace(original, pattern, (match) => replacements[match.Value]);
         }
+
+        public static bool IsAbsoluteUrl(this string url) {
+            return url.StartsWith("http://") || url.StartsWith("https://") || url.StartsWith("//");
+        }
     }
 }