mcs/class/System.Web.Mvc3/Mvc/TemplateInfo.cs

   1 namespace System.Web.Mvc {
   2     using System.Collections.Generic;
   3
   4     public class TemplateInfo {
   5         private string _htmlFieldPrefix;
   6         private object _formattedModelValue;
   7         private HashSet<object> _visitedObjects;
   8
   9         public object FormattedModelValue {
  10             get {
  11                 return _formattedModelValue ?? String.Empty;
  12             }
  13             set {
  14                 _formattedModelValue = value;
  15             }
  16         }
  17
  18         public string HtmlFieldPrefix {
  19             get {
  20                 return _htmlFieldPrefix ?? String.Empty;
  21             }
  22             set {
  23                 _htmlFieldPrefix = value;
  24             }
  25         }
  26
  27         public int TemplateDepth {
  28             get {
  29                 return VisitedObjects.Count;
  30             }
  31         }
  32
  33         // DDB #224750 - Keep a collection of visited objects to prevent infinite recursion
  34         internal HashSet<object> VisitedObjects {
  35             get {
  36                 if (_visitedObjects == null) {
  37                     _visitedObjects = new HashSet<object>();
  38                 }
  39                 return _visitedObjects;
  40             }
  41             set {
  42                 _visitedObjects = value;
  43             }
  44         }
  45
  46         public string GetFullHtmlFieldId(string partialFieldName) {
  47             return HtmlHelper.GenerateIdFromName(GetFullHtmlFieldName(partialFieldName));
  48         }
  49
  50         public string GetFullHtmlFieldName(string partialFieldName) {
  51             // This uses "combine and trim" because either or both of these values might be empty
  52             return (HtmlFieldPrefix + "." + (partialFieldName ?? String.Empty)).Trim('.');
  53         }
  54
  55         public bool Visited(ModelMetadata metadata) {
  56             return VisitedObjects.Contains(metadata.Model ?? metadata.ModelType);
  57         }
  58     }
  59 }