Adding support for dynamic content expressions

ContentItem as dynamic will respond to get property which matches a ContentPart's metadata definition name
ContentPart as dynamic will respond to get property which matches a ContentField's metadata instance name

--HG--
branch : dev
extra : transplant_source : Qu0%9E%09%9B%97rbq%EE%9B%1Ax3%C8p%ED%91%3E

src/Orchard.Tests/ContentManagement/DynamicContentItemTests.cs

@@ -0,0 +1,80 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using NUnit.Framework;
+using Orchard.ContentManagement;
+using Orchard.ContentManagement.MetaData.Models;
+
+namespace Orchard.Tests.ContentManagement {
+    [TestFixture]
+    public class DynamicContentItemTests {
+
+        [Test]
+        public void ContentItemProjectsPartNamesAsProperties() {
+            var contentItem = new ContentItem();
+            var testingPart = new ContentPart { TypePartDefinition = new ContentTypePartDefinition(new ContentPartDefinition("TestingPart"), new SettingsDictionary()) };
+            contentItem.Weld(testingPart);
+
+            dynamic contentItemDynamic = contentItem;
+            dynamic testingPartDynamic  = contentItemDynamic.TestingPart;
+
+            Assert.That((object)testingPartDynamic, Is.SameAs(testingPart));
+        }
+
+        
+        [Test]
+        public void ContentPartsAlsoProjectPartNamesAsProperties() {
+            var contentItem = new ContentItem();
+            var testingPart = new ContentPart { TypePartDefinition = new ContentTypePartDefinition(new ContentPartDefinition("TestingPart"), new SettingsDictionary()) };
+            var anotherPart = new ContentPart { TypePartDefinition = new ContentTypePartDefinition(new ContentPartDefinition("AnotherPart"), new SettingsDictionary()) };
+            contentItem.Weld(testingPart);
+            contentItem.Weld(anotherPart);
+
+            dynamic contentItemDynamic = contentItem;
+            dynamic testingPartDynamic  = contentItemDynamic.TestingPart;
+            dynamic anotherPartDynamic  = contentItemDynamic.AnotherPart;
+            dynamic testingPartDynamic2  = testingPartDynamic.TestingPart;
+            dynamic anotherPartDynamic2  = testingPartDynamic.AnotherPart;
+
+            Assert.That((object)testingPartDynamic, Is.SameAs(testingPart));
+            Assert.That((object)anotherPartDynamic, Is.SameAs(anotherPart));
+            Assert.That((object)testingPartDynamic2, Is.SameAs(testingPart));
+            Assert.That((object)anotherPartDynamic2, Is.SameAs(anotherPart));
+        }
+
+        
+        [Test]
+        public void ContentItemPropertyOnPartRootsYou() {
+            var contentItem = new ContentItem();
+            var testingPart = new ContentPart { TypePartDefinition = new ContentTypePartDefinition(new ContentPartDefinition("TestingPart"), new SettingsDictionary()) };
+            var anotherPart = new ContentPart { TypePartDefinition = new ContentTypePartDefinition(new ContentPartDefinition("AnotherPart"), new SettingsDictionary()) };
+            contentItem.Weld(testingPart);
+            contentItem.Weld(anotherPart);
+
+            dynamic contentItemDynamic = contentItem;
+            dynamic testingPartDynamic  = contentItemDynamic.TestingPart;
+            dynamic anotherPartDynamic  = contentItemDynamic.AnotherPart;
+
+            dynamic contentItemDynamic1  = testingPartDynamic.ContentItem;
+            dynamic contentItemDynamic2  = anotherPartDynamic.ContentItem;
+
+            Assert.That((object)contentItemDynamic1, Is.SameAs(contentItem));
+            Assert.That((object)contentItemDynamic2, Is.SameAs(contentItem));
+        }
+
+        
+        [Test]
+        public void ActualPropertiesTakePriority() {
+            var contentItem = new ContentItem();
+            var testingPart = new ContentPart { TypePartDefinition = new ContentTypePartDefinition(new ContentPartDefinition("Parts"), new SettingsDictionary()) };
+            contentItem.Weld(testingPart);
+
+            dynamic contentItemDynamic = contentItem;
+            dynamic testingPartDynamic  = contentItemDynamic.Parts;
+
+
+            Assert.That((object)testingPartDynamic, Is.AssignableTo<IEnumerable<ContentPart>>());
+        }
+    }
+}

src/Orchard.Tests/Orchard.Framework.Tests.csproj

@@ -173,6 +173,7 @@
     </Compile>
     <Compile Include="ContentManagement\Drivers\FieldStorage\FieldStorageProviderSelectorTests.cs" />
     <Compile Include="ContentManagement\Drivers\FieldStorage\InfosetFieldStorageProviderTests.cs" />
+    <Compile Include="ContentManagement\DynamicContentItemTests.cs" />
     <Compile Include="ContentManagement\Handlers\ContentHandlerTests.cs" />
     <Compile Include="ContentManagement\Handlers\DeltaPartHandler.cs" />
     <Compile Include="ContentManagement\Handlers\EpsilonPartHandler.cs" />

src/Orchard/ContentManagement/ContentItem.cs

@@ -1,16 +1,21 @@
 using System;
 using System.Collections.Generic;
+using System.Dynamic;
 using System.Linq;
+using System.Linq.Expressions;
+using ClaySharp;
 using Orchard.ContentManagement.MetaData.Models;
 using Orchard.ContentManagement.Records;
 
 namespace Orchard.ContentManagement {
-    public class ContentItem : IContent {
+    public class ContentItem : IContent, IContentBehavior, IDynamicMetaObjectProvider {
         public ContentItem() {
+            _behavior = new ClayBehaviorCollection(new[] { new ContentItemBehavior(this) });
             _parts = new List<ContentPart>();
         }
 
         private readonly IList<ContentPart> _parts;
+
         ContentItem IContent.ContentItem { get { return this; } }
 
         public int Id { get { return Record == null ? 0 : Record.Id; } }
@@ -39,5 +44,15 @@ namespace Orchard.ContentManagement {
             part.ContentItem = this;
             _parts.Add(part);
         }
+
+
+        private readonly IClayBehavior _behavior;
+        IClayBehavior IContentBehavior.Behavior {
+            get { return _behavior; }
+        }
+        DynamicMetaObject IDynamicMetaObjectProvider.GetMetaObject(Expression parameter) {
+            return new ClayMetaObject(this, parameter, ex => Expression.Property(Expression.Convert(ex, typeof(IContentBehavior)), "Behavior"));
+        }
+
     }
 }

src/Orchard/ContentManagement/ContentItemBehavior.cs

@@ -0,0 +1,21 @@
+using System;
+using ClaySharp;
+
+namespace Orchard.ContentManagement {
+    public class ContentItemBehavior : ClayBehavior {
+        private readonly IContent _content;
+
+        public ContentItemBehavior(IContent content) {
+            _content = content;
+        }
+
+        public override object GetMemberMissing(Func<object> proceed, object self, string name) {
+            var contentItem = _content.ContentItem;
+            foreach (var part in contentItem.Parts) {
+                if (part.PartDefinition.Name == name)
+                    return part;
+            }
+            return base.GetMemberMissing(proceed, self, name);
+        }
+    }
+}

src/Orchard/ContentManagement/ContentPart.cs

@@ -1,19 +1,24 @@
 using System;
 using System.Collections.Generic;
+using System.Dynamic;
 using System.Linq;
+using System.Linq.Expressions;
 using System.Web.Mvc;
+using ClaySharp;
 using Orchard.ContentManagement.MetaData.Models;
 using Orchard.ContentManagement.Utilities;
 using Orchard.UI;
 
 namespace Orchard.ContentManagement {
-    public class ContentPart : IContent {
+    public class ContentPart : IContent, IContentBehavior, IDynamicMetaObjectProvider {
         private readonly IList<ContentField> _fields;
 
         public ContentPart() {
+            _behavior = new ClayBehaviorCollection(new[] { new ContentPartBehavior(this) });
             _fields = new List<ContentField>();
         }
 
+
         public virtual ContentItem ContentItem { get; set; }
 
         //interesting thought, should/could parts also have zones (would then have zones on the page, content item and parts...)?
@@ -24,6 +29,14 @@ namespace Orchard.ContentManagement {
             }
         }
 
+        private readonly IClayBehavior _behavior;
+        IClayBehavior IContentBehavior.Behavior {
+            get { return _behavior; }
+        }
+        DynamicMetaObject IDynamicMetaObjectProvider.GetMetaObject(Expression parameter) {
+            return new ClayMetaObject(this, parameter, ex => Expression.Property(Expression.Convert(ex, typeof(IContentBehavior)), "Behavior"));
+        }
+
         /// <summary>
         /// The ContentItem's identifier.
         /// </summary>
@@ -51,6 +64,8 @@ namespace Orchard.ContentManagement {
         public void Weld(ContentField field) {
             _fields.Add(field);
         }
+
+
     }
 
     public class ContentPart<TRecord> : ContentPart {

src/Orchard/ContentManagement/ContentPartBehavior.cs

@@ -0,0 +1,20 @@
+using System;
+
+namespace Orchard.ContentManagement {
+    public class ContentPartBehavior : ContentItemBehavior {
+        private readonly ContentPart _contentPart;
+
+        public ContentPartBehavior(ContentPart contentPart)
+            : base(contentPart) {
+            _contentPart = contentPart;
+        }
+
+        public override object GetMemberMissing(Func<object> proceed, object self, string name) {
+            foreach (var field in _contentPart.Fields) {
+                if (field.PartFieldDefinition.Name == name)
+                    return field;
+            }
+            return base.GetMemberMissing(proceed, self, name);
+        }
+    }
+}

src/Orchard/ContentManagement/IContentBehavior.cs

@@ -0,0 +1,7 @@
+using ClaySharp;
+
+namespace Orchard.ContentManagement {
+    public interface IContentBehavior {
+        IClayBehavior Behavior { get; }
+    }
+}

src/Orchard/Orchard.Framework.csproj

@@ -150,9 +150,12 @@
     <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="ContentManagement\ContentItemBehavior.cs" />
+    <Compile Include="ContentManagement\ContentPartBehavior.cs" />
     <Compile Include="ContentManagement\DefaultContentDisplay.cs" />
     <Compile Include="ContentManagement\Drivers\ContentShapeResult.cs" />
     <Compile Include="ContentManagement\Handlers\BuildShapeContext.cs" />
+    <Compile Include="ContentManagement\IContentBehavior.cs" />
     <Compile Include="ContentManagement\Utilities\ComputedField.cs" />
     <Compile Include="DisplayManagement\Descriptors\ResourceBindingStrategy\StylesheetBindingStrategy.cs" />
     <Compile Include="DisplayManagement\Descriptors\ShapeDescriptor.cs" />