mcs/class/System.ServiceModel.Web/System.ServiceModel.Syndication/SyndicationContent.cs

   1 //
   2 // SyndicationContent.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto  <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2007 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Collections.Generic;
  30 using System.Collections.ObjectModel;
  31 using System.IO;
  32 using System.Runtime.Serialization;
  33 using System.Text;
  34 using System.Xml;
  35 using System.Xml.Serialization;
  36
  37 namespace System.ServiceModel.Syndication
  38 {
  39         public abstract class SyndicationContent
  40         {
  41                 #region Static members
  42
  43                 public static TextSyndicationContent CreateHtmlContent (string content)
  44                 {
  45                         return new TextSyndicationContent (content, TextSyndicationContentKind.Html);
  46                 }
  47
  48                 public static TextSyndicationContent CreatePlaintextContent (string content)
  49                 {
  50                         return new TextSyndicationContent (content, TextSyndicationContentKind.Plaintext);
  51                 }
  52
  53                 public static TextSyndicationContent CreateXhtmlContent (string content)
  54                 {
  55                         return new TextSyndicationContent (content, TextSyndicationContentKind.XHtml);
  56                 }
  57
  58                 public static UrlSyndicationContent CreateUrlContent (Uri url, string mediaType)
  59                 {
  60                         return new UrlSyndicationContent (url, mediaType);
  61                 }
  62
  63                 public static XmlSyndicationContent CreateXmlContent (object dataContractObject)
  64                 {
  65                         return new XmlSyndicationContent (null, dataContractObject, (XmlObjectSerializer) null);
  66                 }
  67
  68                 public static XmlSyndicationContent CreateXmlContent (object dataContractObject, XmlObjectSerializer dataContractSerializer)
  69                 {
  70                         return new XmlSyndicationContent (null, dataContractObject, dataContractSerializer);
  71                 }
  72
  73                 public static XmlSyndicationContent CreateXmlContent (object xmlSerializerObject, XmlSerializer serializer)
  74                 {
  75                         return new XmlSyndicationContent (null, xmlSerializerObject, serializer);
  76                 }
  77
  78                 public static XmlSyndicationContent CreateXmlContent (XmlReader reader)
  79                 {
  80                         return new XmlSyndicationContent (reader);
  81                 }
  82
  83                 #endregion
  84
  85                 #region Instance members
  86
  87                 SyndicationExtensions extensions = new SyndicationExtensions ();
  88
  89                 protected SyndicationContent ()
  90                 {
  91                 }
  92
  93                 protected SyndicationContent (SyndicationContent source)
  94                 {
  95                         if (source == null)
  96                                 throw new ArgumentNullException ("source");
  97                         extensions = source.extensions.Clone ();
  98                 }
  99
 100                 public Dictionary<XmlQualifiedName, string> AttributeExtensions {
 101                         get { return extensions.Attributes; }
 102                 }
 103
 104                 public abstract string Type { get; }
 105
 106                 public abstract SyndicationContent Clone ();
 107
 108                 protected abstract void WriteContentsTo (XmlWriter writer);
 109
 110                 public void WriteTo (XmlWriter writer, string outerElementName, string outerElementNamespace)
 111                 {
 112                         if (writer == null)
 113                                 throw new ArgumentNullException ("writer");
 114                         if (outerElementName == null)
 115                                 throw new ArgumentNullException ("outerElementName");
 116                         if (outerElementNamespace == null)
 117                                 throw new ArgumentNullException ("outerElementNamespace");
 118                         writer.WriteStartElement (outerElementName, outerElementNamespace);
 119                         writer.WriteAttributeString ("type", Type);
 120                         WriteContentsTo (writer);
 121                         writer.WriteFullEndElement ();
 122                 }
 123
 124                 #endregion
 125         }
 126 }