Updating XmlRpc functionality to clear up the confusion with Live Writer (WLW) and categories (since there is not category support)

- updated IXmlRpcHandler to also have a vvoid SetCapabilities(XElement element) so handlers can specify what capabilities they support
- updated the WLW manifest to have a thiner capability set (e.g. no category support) so handlers can light up what they support
- updated the XmlRpcHandlers to add what capabilities they support. there'a room for imporoving (adding/removing) specified capabilities here so the WLW only shows features for what's supported
- added WLW support for tags so a tags input can be used in place of the categories input in the WLW UI

--HG--
branch : dev

src/Orchard.Web/Modules/Orchard.Blogs/Services/XmlRpcHandler.cs

@@ -1,7 +1,9 @@
 using System;
+using System.Collections.Generic;
 using System.Linq;
 using System.Web.Mvc;
 using System.Web.Routing;
+using System.Xml.Linq;
 using JetBrains.Annotations;
 using Orchard.Blogs.Models;
 using Orchard.ContentManagement;
@@ -44,6 +46,11 @@ namespace Orchard.Blogs.Services {
 
         public ILogger Logger { get; set; }
 
+        public void SetCapabilities(XElement options) {
+            const string manifestUri = "http://schemas.microsoft.com/wlw/manifest/weblog";
+            options.SetElementValue(XName.Get("supportsSlug", manifestUri), "Yes");
+        }
+
         public void Process(XmlRpcContext context) {
             var urlHelper = new UrlHelper(context.ControllerContext.RequestContext, _routeCollection);
 
@@ -72,7 +79,8 @@ namespace Orchard.Blogs.Services {
                     Convert.ToString(context.Request.Params[1].Value),
                     Convert.ToString(context.Request.Params[2].Value),
                     (XRpcStruct)context.Request.Params[3].Value,
-                    Convert.ToBoolean(context.Request.Params[4].Value));
+                    Convert.ToBoolean(context.Request.Params[4].Value),
+                    context._drivers);
 
                 context.Response = new XRpcMethodResponse().Add(result);
             }
@@ -92,7 +100,8 @@ namespace Orchard.Blogs.Services {
                     Convert.ToString(context.Request.Params[1].Value),
                     Convert.ToString(context.Request.Params[2].Value),
                     (XRpcStruct)context.Request.Params[3].Value,
-                    Convert.ToBoolean(context.Request.Params[4].Value));
+                    Convert.ToBoolean(context.Request.Params[4].Value),
+                    context._drivers);
                 context.Response = new XRpcMethodResponse().Add(result);
             }
 
@@ -102,7 +111,8 @@ namespace Orchard.Blogs.Services {
                     Convert.ToString(context.Request.Params[1].Value),
                     Convert.ToString(context.Request.Params[2].Value),
                     Convert.ToString(context.Request.Params[3].Value),
-                    Convert.ToBoolean(context.Request.Params[4].Value));
+                    Convert.ToBoolean(context.Request.Params[4].Value),
+                    context._drivers);
                 context.Response = new XRpcMethodResponse().Add(result);
             }
         }
@@ -152,7 +162,8 @@ namespace Orchard.Blogs.Services {
             string userName,
             string password,
             XRpcStruct content,
-            bool publish) {
+            bool publish,
+            IEnumerable<IXmlRpcDriver> drivers) {
 
             var user = _membershipService.ValidateUser(userName, password);
             _authorizationService.CheckAccess(Permissions.EditBlogPost, user, null);
@@ -191,6 +202,9 @@ namespace Orchard.Blogs.Services {
             if (publish)
                 _blogPostService.Publish(blogPost);
 
+            foreach (var driver in drivers)
+                driver.Process(blogPost.Id);
+
             return blogPost.Id;
         }
 
@@ -210,12 +224,7 @@ namespace Orchard.Blogs.Services {
             return CreateBlogStruct(blogPost, urlHelper);
         }
 
-        private bool MetaWeblogEditPost(
-            int postId,
-            string userName,
-            string password,
-            XRpcStruct content,
-            bool publish) {
+        private bool MetaWeblogEditPost(int postId, string userName, string password, XRpcStruct content, bool publish, ICollection<IXmlRpcDriver> drivers) {
 
             var user = _membershipService.ValidateUser(userName, password);
             _authorizationService.CheckAccess(StandardPermissions.AccessFrontEnd, user, null);
@@ -233,19 +242,16 @@ namespace Orchard.Blogs.Services {
             blogPost.Slug = slug;
             blogPost.Text = description;
 
-            if (publish) {
+            if (publish)
                 _blogPostService.Publish(blogPost);
-            }
+
+            foreach (var driver in drivers)
+                driver.Process(blogPost.Id);
 
             return true;
         }
 
-        private bool MetaWeblogDeletePost(
-                string appkey,
-                string postId,
-                string userName,
-                string password,
-                bool publish) {
+        private bool MetaWeblogDeletePost(string appkey, string postId, string userName, string password, bool publish, ICollection<IXmlRpcDriver> drivers) {
             var user = _membershipService.ValidateUser(userName, password);
             _authorizationService.CheckAccess(StandardPermissions.AccessFrontEnd, user, null);
 
@@ -253,6 +259,9 @@ namespace Orchard.Blogs.Services {
             if (blogPost == null)
                 throw new ArgumentException();
 
+            foreach (var driver in drivers)
+                driver.Process(blogPost.Id);
+
             _blogPostService.Delete(blogPost);
             return true;
         }