Move some of the config to Umbraco.Configuration

src/Umbraco.Configuration/CommaDelimitedConfigurationElement.cs

@@ -0,0 +1,70 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.Specialized;
+using System.Configuration;
+
+namespace Umbraco.Core.Configuration
+{
+    /// <summary>
+    /// Defines a configuration section that contains inner text that is comma delimited
+    /// </summary>
+    public class CommaDelimitedConfigurationElement : InnerTextConfigurationElement<CommaDelimitedStringCollection>, IEnumerable<string>
+    {
+        public override CommaDelimitedStringCollection Value
+        {
+            get
+            {
+                var converter = new CommaDelimitedStringCollectionConverter();
+                return (CommaDelimitedStringCollection) converter.ConvertFrom(RawValue);
+            }
+        }
+
+        IEnumerator<string> IEnumerable<string>.GetEnumerator()
+        {
+            return new InnerEnumerator(Value.GetEnumerator());
+        }
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return new InnerEnumerator(Value.GetEnumerator());
+        }
+
+        /// <summary>
+        /// A wrapper for StringEnumerator since it doesn't explicitly implement IEnumerable
+        /// </summary>
+        private class InnerEnumerator : IEnumerator<string>
+        {
+            private readonly StringEnumerator _stringEnumerator;
+
+            public InnerEnumerator(StringEnumerator stringEnumerator)
+            {
+                _stringEnumerator = stringEnumerator;
+            }
+
+            public bool MoveNext()
+            {
+                return _stringEnumerator.MoveNext();
+            }
+
+            public void Reset()
+            {
+                _stringEnumerator.Reset();
+            }
+
+            string IEnumerator<string>.Current
+            {
+                get { return _stringEnumerator.Current; }
+            }
+
+            public object Current
+            {
+                get { return _stringEnumerator.Current; }
+            }
+
+            public void Dispose()
+            {
+                _stringEnumerator.DisposeIfDisposable();
+            }
+        }
+    }
+}