mcs/class/System.Web/System.Web.UI.HtmlControls/HtmlControl.cs

   1 //\r
   2 // System.Web.UI.HtmlControls.HtmlControl.cs\r
   3 //\r
   4 // Author\r
   5 //   Bob Smith <bob@thestuff.net>\r
   6 //\r
   7 //\r
   8 // (C) Bob Smith\r
   9 //\r
  10 \r
  11 using System;\r
  12 using System.Globalization;\r
  13 using System.Web;\r
  14 using System.Web.UI;\r
  15 \r
  16 namespace System.Web.UI.HtmlControls{\r
  17         \r
  18         public abstract class HtmlControl : Control, IAttributeAccessor\r
  19         {\r
  20                 private string _tagName = "span";\r
  21                 //TODO: Is this correct, or is the StateBag really the ViewState?\r
  22                 private AttributeCollection _attributes = new AttributeCollection(new StateBag(true));\r
  23                 private bool _disabled = false;\r
  24                 \r
  25                 public HtmlControl(){}\r
  26                 \r
  27                 public HtmlControl(string tag)\r
  28                 {\r
  29                         if(tag != null && tag != String.Empty) _tagName = tag;\r
  30                 }\r
  31                 \r
  32                 internal static string AttributeToString(int n){\r
  33                         if (n != -1)return n.ToString(NumberFormatInfo.InvariantInfo);\r
  34                         return null;\r
  35                 }\r
  36                 \r
  37                 internal static string AttributeToString(string s){\r
  38                         if (s != null && s.Length != 0) return s;\r
  39                         return null;\r
  40                 }\r
  41                 \r
  42                 internal void PreProcessRelativeReference(HtmlTextWriter writer, string attribName){\r
  43                         string attr = Attributes[attribName];\r
  44                         if (attr != null){\r
  45                                 if (attr.Length != 0){\r
  46                                         try{\r
  47                                                 attr = ResolveUrl(attr);\r
  48                                         }\r
  49                                         catch (Exception e) {\r
  50                                                 throw new HttpException(attribName + " property had malformed url");\r
  51                                         }\r
  52                                         writer.WriteAttribute(attribName, attr);\r
  53                                         Attributes.Remove(attribName);\r
  54                                 }\r
  55                         }\r
  56                 }\r
  57                 \r
  58                 string System.Web.UI.IAttributeAccessor.GetAttribute(string name){\r
  59                         return Attributes[name];\r
  60                 }\r
  61                 \r
  62                 void System.Web.UI.IAttributeAccessor.SetAttribute(string name, string value){\r
  63                         Attributes[name] = value;\r
  64                 }\r
  65                 \r
  66                 protected virtual void RenderAttributes(HtmlTextWriter writer){\r
  67                         if (ID != null){\r
  68                                 writer.WriteAttribute("id",ClientID);\r
  69                         }\r
  70                         Attributes.Render(writer);\r
  71                 }\r
  72                 \r
  73                 internal static void WriteOnClickAttribute(HtmlTextWriter writer, bool submitsAutomatically, bool submitsProgramatically, bool causesValidation) {\r
  74                         string local1;\r
  75                         string local2;\r
  76                         string local3;\r
  77                         \r
  78                         AttributeCollection attr = Attributes;\r
  79                         local1 = null;\r
  80                         if (submitsAutomatically) {\r
  81                                 if ((causesValidation))\r
  82                                         local1 = System.Web.UI.Utils.GetClientValidateEvent(Page);\r
  83                         }\r
  84                         else if (submitsProgramatically) {\r
  85                                 if (causesValidation)\r
  86                                         local1 = System.Web.UI.Utils.GetClientValidatedPostback(this);\r
  87                                 else\r
  88                                         local1 = Page.GetPostBackClientEvent(this, String.Empty);\r
  89                         }\r
  90                         if (local1 != null) {\r
  91                                 local2 = attr["language"];\r
  92                                 if (local2 != null)\r
  93                                         attr.Remove("language");\r
  94                                 writer.WriteAttribute("language", "javascript");\r
  95                                 local3 = attr["onclick"];\r
  96                                 if (local3 != null) {\r
  97                                         attr.Remove("onclick");\r
  98                                         writer.WriteAttribute("onclick", local3 + " " + local1);\r
  99                                         return;\r
 100                                 }\r
 101                                 writer.WriteAttribute("onclick", local1);\r
 102                         }\r
 103                 }\r
 104                 \r
 105                 public AttributeCollection Attributes\r
 106                 {\r
 107                         get\r
 108                         {\r
 109                                 return _attributes;\r
 110                         }\r
 111                 }\r
 112                 public bool Disabled\r
 113                 {\r
 114                         get\r
 115                         {\r
 116                                 return _disabled;\r
 117                         }\r
 118                         set\r
 119                         {\r
 120                                 _disabled = value;\r
 121                         }\r
 122                 }\r
 123                 public CssStyleCollection Style\r
 124                 {\r
 125                         get\r
 126                         {\r
 127                                 return _attributes.CssStyle;\r
 128                         }\r
 129                 }\r
 130                 public virtual string TagName\r
 131                 {\r
 132                         get\r
 133                         {\r
 134                                 return _tagName;\r
 135                         }\r
 136                 }\r
 137         }\r
 138 }\r