mcs/class/System.Web/System.Web.UI.WebControls/Xml.cs

   1 //
   2 // System.Web.UI.WebControls.Xml.cs
   3 //
   4 // Authors:
   5 //   Gaurav Vaish (gvaish@iitk.ac.in)
   6 //   Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   8 //
   9 // (c) 2002 Ximian, Inc. (http://www.ximian.com)
  10 // (C) Gaurav Vaish (2002)
  11 // (C) 2003 Andreas Nahr
  12 //\r
  13 \r
  14 using System;\r
  15 using System.ComponentModel;
  16 using System.ComponentModel.Design;\r
  17 using System.IO;\r
  18 using System.Xml;\r
  19 using System.Xml.Xsl;\r
  20 using System.Xml.XPath;\r
  21 using System.Web;\r
  22 using System.Web.UI;\r
  23 \r
  24 namespace System.Web.UI.WebControls\r
  25 {\r
  26         [DefaultProperty("DocumentSource")]\r
  27         [PersistChildren(false)]
  28         [ControlBuilder (typeof (XmlBuilder))]
  29         [Designer ("System.Web.UI.Design.WebControls.XmlDesigner, " + Consts.AssemblySystem_Design, typeof (IDesigner))]\r
  30         public class Xml : Control\r
  31         {\r
  32                 private XmlDocument      document;\r
  33                 private string           documentContent;\r
  34                 private string           documentSource;\r
  35                 private XslTransform     transform;\r
  36                 private XsltArgumentList transformArgumentList;\r
  37                 private string           transformSource;\r
  38 \r
  39                 private XPathDocument xpathDoc;\r
  40 \r
  41                 private static XslTransform defaultTransform;\r
  42 \r
  43                 static Xml()\r
  44                 {\r
  45                         XmlTextReader reader = new XmlTextReader(new StringReader("<xsl:stylesheet version='1.0' " +\r
  46                                                                 "xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>" +\r
  47                                                                 "<xsl:template match=\"*\">" +\r
  48                                                                 "<xsl:copy-of select=\".\"/>" +\r
  49                                                                 "</xsl:template>" +\r
  50                                                                 "</xsl:stylesheet>"));\r
  51                         defaultTransform = new XslTransform();\r
  52 #if NET_1_0
  53                         defaultTransform.Load (reader);
  54 #else
  55                         defaultTransform.Load (reader, null, null);
  56 #endif
  57                 }\r
  58 \r
  59                 public Xml(): base()\r
  60                 {\r
  61                 }\r
  62 \r
  63                 [MonoTODO("security")]\r
  64                 private void LoadXmlDoc ()\r
  65                 {\r
  66                         if (documentContent != null && documentContent.Length > 0) {\r
  67                                 document = new XmlDocument();\r
  68                                 document.LoadXml (documentContent);\r
  69                                 return;\r
  70                         }\r
  71 \r
  72                         if (documentSource != null && documentSource.Length != 0) {\r
  73                                 document = new XmlDocument();\r
  74                                 document.Load (documentSource);\r
  75                         }\r
  76                 }\r
  77
  78                 [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  79                 [WebSysDescription ("This is the XML document that is used for the XML Webcontrol.")]\r
  80                 public XmlDocument Document\r
  81                 {\r
  82                         get\r
  83                         {\r
  84                                 if(document == null)\r
  85                                         LoadXmlDoc();\r
  86                                 return document;\r
  87                         }\r
  88                         set\r
  89                         {\r
  90                                 documentSource  = null;\r
  91                                 documentContent = null;\r
  92                                 xpathDoc        = null;\r
  93                                 document        = value;\r
  94                         }\r
  95                 }\r
  96
  97                 [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  98                 [WebSysDescription ("The XML content that is transformed for the XML Webcontrol.")]\r
  99                 public string DocumentContent\r
 100                 {\r
 101                         get\r
 102                         {\r
 103                                 return String.Empty;\r
 104                         }\r
 105                         set\r
 106                         {\r
 107                                 document        = null;\r
 108                                 xpathDoc        = null;\r
 109                                 documentContent = value;\r
 110                         }\r
 111                 }\r
 112
 113                 [DefaultValue (""), Bindable (true), WebCategory ("Behavior")]
 114                 [Editor ("System.Web.UI.Design.XmlUrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
 115                 [WebSysDescription ("The URL or the source of the XML content that is transformed for the XML Webcontrol.")]\r
 116                 public string DocumentSource\r
 117                 {\r
 118                         get\r
 119                         {\r
 120                                 if(documentSource != null)\r
 121                                         return documentSource;\r
 122                                 return String.Empty;\r
 123                         }\r
 124                         set\r
 125                         {\r
 126                                 document        = null;\r
 127                                 documentContent = null;\r
 128                                 xpathDoc        = null;\r
 129                                 documentSource  = value;\r
 130                         }\r
 131                 }\r
 132
 133                 [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 134                 [WebSysDescription ("The XSL transform that is applied to this XML Webcontrol.")]\r
 135                 public XslTransform Transform\r
 136                 {\r
 137                         get\r
 138                         {\r
 139                                 return transform;\r
 140                         }\r
 141                         set\r
 142                         {\r
 143                                 transformSource = null;\r
 144                                 transform       = value;\r
 145                         }\r
 146                 }\r
 147
 148                 [DefaultValue (""), Bindable (true), WebCategory ("Behavior")]
 149                 [Editor ("System.Web.UI.Design.XmlUrlEditor, " + Consts.AssemblySystem_Design, typeof (System.Drawing.Design.UITypeEditor))]
 150                 [WebSysDescription ("An URL specifying the source that is used for the XSL transformation.")]\r
 151                 public string TransformSource\r
 152                 {\r
 153                         get\r
 154                         {\r
 155                                 if(transformSource != null)\r
 156                                         return transformSource;\r
 157                                 return String.Empty;\r
 158                         }\r
 159                         set\r
 160                         {\r
 161                                 transform       = null;\r
 162                                 transformSource = value;\r
 163                         }\r
 164                 }\r
 165
 166                 [Browsable (false), DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
 167                 [WebSysDescription ("Arguments that are used by the XSL Transform.")]\r
 168                 public XsltArgumentList TransformArgumentList\r
 169                 {\r
 170                         get\r
 171                         {\r
 172                                 return transformArgumentList;\r
 173                         }\r
 174                         set\r
 175                         {\r
 176                                 transformArgumentList = value;\r
 177                         }\r
 178                 }\r
 179 \r
 180                 protected override void AddParsedSubObject(object obj)\r
 181                 {\r
 182                         if(obj is LiteralControl)\r
 183                         {\r
 184                                 DocumentContent = ((LiteralControl)obj).Text;\r
 185                                 return;\r
 186                         }\r
 187                         throw new HttpException (HttpRuntime.FormatResourceString (\r
 188                                                         "Cannot_Have_Children_of_Type",\r
 189                                                         "Xml",\r
 190                                                         GetType().Name));\r
 191                 }\r
 192 \r
 193                 [MonoTODO("security")]\r
 194                 private void LoadXpathDoc ()\r
 195                 {\r
 196                         if(documentContent != null && documentContent.Length > 0) {\r
 197                                 xpathDoc = new XPathDocument (new StringReader (documentContent));\r
 198                                 return;\r
 199                         }\r
 200 \r
 201                         if (documentSource != null && documentSource.Length != 0) {\r
 202                                 xpathDoc = new XPathDocument (MapPathSecure (documentSource));\r
 203                                 return;\r
 204                         }\r
 205                 }\r
 206 \r
 207                 [MonoTODO("security")]\r
 208                 private void LoadTransform ()\r
 209                 {\r
 210                         if (transform != null)\r
 211                                 return;\r
 212 \r
 213                         if (transformSource != null && transformSource.Length != 0) {\r
 214                                 transform = new XslTransform ();\r
 215                                 transform.Load (MapPathSecure (transformSource));\r
 216                         }\r
 217                 }\r
 218 \r
 219                 protected override void Render(HtmlTextWriter output)\r
 220                 {\r
 221                         if(document == null)\r
 222                         {\r
 223                                 LoadXpathDoc();\r
 224                         }\r
 225 \r
 226                         LoadTransform();\r
 227                         if(document == null && xpathDoc == null)\r
 228                         {\r
 229                                 return;\r
 230                         }\r
 231                         if(transform == null)\r
 232                         {\r
 233                                 transform = defaultTransform;\r
 234                         }\r
 235                         if(document != null)\r
 236                         {\r
 237                                 Transform.Transform(document, transformArgumentList, output);\r
 238                                 return;\r
 239                         }\r
 240                         Transform.Transform(xpathDoc, transformArgumentList, output);\r
 241                 }\r
 242         }\r
 243 }\r
 244 \r