Adding Common.Body.Summary template that displays a generated body excerpt

- Added body summary template
- Added an Ellipsize(int length) string extension
- Added an Excerpt(string markup, int length) HtmlHelper extension
- Added a LongestMatch method to ContentPartTemplateResult (pretty much a copy/paste from item) to get the fallback on filename functionality
- Changed the BodyDriver to try to display SummaryAdmin or Summary template variations on Body if the displayType fits

--HG--
branch : dev

src/Orchard.Web/Core/Common/Controllers/BodyDriver.cs

@@ -20,11 +20,12 @@ namespace Orchard.Core.Common.Controllers {
 
         // \/\/ Haackalicious on many accounts - don't copy what has been done here for the wrapper \/\/
         protected override DriverResult Display(BodyAspect part, string displayType) {
-            var model = new BodyDisplayViewModel { BodyAspect = part, Text = BbcodeReplace(part.Text)};
+            var model = new BodyDisplayViewModel { BodyAspect = part, Text = BbcodeReplace(part.Text) };
+
             return Combined(
                 Services.Authorizer.Authorize(Permissions.ChangeOwner) ? ContentPartTemplate(model, "Parts/ManageWrapperPre").Location("primary", "5") : null,
                 Services.Authorizer.Authorize(Permissions.ChangeOwner) ? ContentPartTemplate(model, "Parts/Manage").Location("primary", "5") : null,
-                ContentPartTemplate(model, TemplateName, Prefix).Location("primary", "5"),
+                ContentPartTemplate(model, TemplateName, Prefix).LongestMatch(displayType, "Summary", "SummaryAdmin").Location("primary", "5"),
                 Services.Authorizer.Authorize(Permissions.ChangeOwner) ? ContentPartTemplate(model, "Parts/ManageWrapperPost").Location("primary", "5") : null);
         }
 

src/Orchard.Web/Core/Common/Views/DisplayTemplates/Parts/Common.Body.Summary.ascx

@@ -0,0 +1,9 @@
+<%@ Control Language="C#" Inherits="Orchard.Mvc.ViewUserControl<BodyDisplayViewModel>" %>
+<%@ Import Namespace="Orchard.Core.Common.ViewModels"%>
+<%--//doing excerpt generation on the way out for now so we don't stick ourselves with needing to regen excerpts for existing data
+    //also, doing this here, inline, until we have a pluggable processing model (both in and out)
+    //also, ...this is ugly--%>
+<%=string.Format(
+    "<p>{0} {1}</p>",
+    Html.Excerpt(Model.Text, 200).ToString().Replace("\r\n", "</p>\r\n<p>"),
+    Html.ItemDisplayLink(T("[more]").ToString(), Model.BodyAspect.ContentItem)) %>

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

@@ -225,6 +225,7 @@
     <Content Include="Themes\Views\DisplayTemplates\Items\ContentItem.ascx" />
   </ItemGroup>
   <ItemGroup>
+    <Content Include="Common\Views\DisplayTemplates\Parts\Common.Body.Summary.ascx" />
     <Content Include="Common\Views\DisplayTemplates\Parts\ManageWrapperPost.ascx" />
     <Content Include="Common\Views\DisplayTemplates\Parts\ManageWrapperPre.ascx" />
     <Content Include="Common\Views\DisplayTemplates\Parts\Manage.ascx" />

src/Orchard/ContentManagement/Drivers/ContentPartTemplateResult.cs

@@ -1,3 +1,4 @@
+using System.Linq;
 using Orchard.ContentManagement.Handlers;
 
 namespace Orchard.ContentManagement.Drivers {
@@ -34,5 +35,22 @@ namespace Orchard.ContentManagement.Drivers {
             Position = position;
             return this;
         }
+
+        public ContentPartTemplateResult LongestMatch(string displayType, params string[] knownDisplayTypes) {
+
+            if (string.IsNullOrEmpty(displayType))
+                return this;
+
+            var longest = knownDisplayTypes.Aggregate("", (best, x) => {
+                if (displayType.StartsWith(x) && x.Length > best.Length) return x;
+                return best;
+            });
+
+            if (string.IsNullOrEmpty(longest))
+                return this;
+
+            TemplateName += "." + longest;
+            return this;
+        }
     }
 }

src/Orchard/Extensions/StringExtensions.cs

@@ -0,0 +1,19 @@
+using System.Linq;
+using System.Text.RegularExpressions;
+
+namespace Orchard.Extensions {
+    public static class StringExtensions {
+        public static string Ellipsize(this string text, int characterCount) {
+            return text.Ellipsize(characterCount, " …");
+        }
+
+        public static string Ellipsize(this string text, int characterCount, string ellipsis) {
+            var cleanTailRegex = new Regex(@"\s+\S*$");
+
+            if (string.IsNullOrEmpty(text) || characterCount < 0 || text.Length <= characterCount)
+                return text;
+
+            return cleanTailRegex.Replace(text.Substring(0, characterCount + 1), "") + ellipsis;
+        }
+    }
+}

src/Orchard/Mvc/Html/HtmlHelperExtensions.cs

@@ -3,9 +3,11 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Linq.Expressions;
 using System.Text;
+using System.Text.RegularExpressions;
 using System.Web.Mvc;
 using System.Web.Mvc.Html;
 using System.Web.Routing;
+using Orchard.Extensions;
 using Orchard.Services;
 using Orchard.Settings;
 using Orchard.Utility;
@@ -88,6 +90,17 @@ namespace Orchard.Mvc.Html {
 
         #endregion
 
+        #region Excerpt
+
+        public static MvcHtmlString Excerpt(this HtmlHelper html, string markup, int length) {
+            var tagRegex = new Regex("<[^<>]*>", RegexOptions.Singleline);
+            var text = html.Encode(tagRegex.Replace(markup, ""));
+
+            return MvcHtmlString.Create(text.Ellipsize(length));
+        }
+
+        #endregion
+
         #region Format Date/Time
 
         public static string DateTimeRelative(this HtmlHelper htmlHelper, DateTime? value, string defaultIfNull) {

src/Orchard/Orchard.csproj

@@ -151,6 +151,7 @@
     <Compile Include="Extensions\AreaFolders.cs" />
     <Compile Include="Extensions\ExtensionFolders.cs" />
     <Compile Include="Extensions\Loaders\AreaExtensionLoader.cs" />
+    <Compile Include="Extensions\StringExtensions.cs" />
     <Compile Include="Extensions\UriExtensions.cs" />
     <Compile Include="Mvc\AntiForgery\ValidateAntiForgeryTokenOrchardAttribute.cs" />
     <Compile Include="Mvc\Extensions\UrlHelperExtensions.cs" />