Fixes up the Image cropper extensions, ensures that we don't recursively call Url (this is a special property).

src/Umbraco.Web/Models/ImageCropDataSet.cs

@@ -0,0 +1,83 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Web;
+
+namespace Umbraco.Web.Models
+{
+    [DataContract(Name="imageCropDataSet")]
+    public class ImageCropDataSet : IHtmlString
+    {
+        [DataMember(Name="src")]
+        public string Src { get; set;}
+
+        [DataMember(Name = "focalPoint")]
+        public ImageCropFocalPoint FocalPoint { get; set; }
+
+        [DataMember(Name = "crops")]
+        public IEnumerable<ImageCropData> Crops { get; set; }
+
+
+        public string GetCropUrl(string alias)
+        {
+
+            var crop = Crops.GetCrop(alias);
+            if(crop == null)
+                return null;
+
+
+            StringBuilder sb = new StringBuilder();
+            if (crop.Coordinates != null)
+            {
+                sb.Append("?crop=");
+                sb.Append(crop.Coordinates.X1).Append(",");
+                sb.Append(crop.Coordinates.Y1).Append(",");
+                sb.Append(crop.Coordinates.X2).Append(",");
+                sb.Append(crop.Coordinates.Y2);
+                sb.Append("&cropmode=percentage");
+            }
+            else
+            {
+                if (HasFocalPoint())
+                {
+                    sb.Append("?center=" + FocalPoint.Top + "," + FocalPoint.Left);
+                    sb.Append("&mode=crop");
+                }
+                else
+                {
+                    sb.Append("?anchor=center");
+                    sb.Append("&mode=crop");
+                }
+
+            }
+
+            sb.Append("&width=").Append(crop.Width);
+            sb.Append("&height=").Append(crop.Height);
+            sb.Append("&rnd=").Append(DateTime.Now.Ticks);
+            return sb.ToString();
+
+        }
+
+        public bool HasFocalPoint()
+        {
+            return (FocalPoint != null && FocalPoint.Top != 0.5m && FocalPoint.Top != 0.5m);
+        }
+
+        public bool HasCrop(string alias)
+        {
+            return Crops.Any(x => x.Alias == alias);
+        }
+
+        public bool HasImage()
+        {
+            return string.IsNullOrEmpty(Src);
+        }
+
+        public string ToHtmlString()
+        {
+            return this.Src;
+        }
+    }
+}