mcs/class/System.XML/System.Xml/XmlSignificantWhitespace.cs

   1 //
   2 // System.Xml.XmlSignificantWhitespace.cs
   3 //
   4 // Author:
   5 //      Duncan Mak  (duncan@ximian.com)
   6 //
   7 // (C) Ximian, Inc. http://www.ximian.com
   8 //
   9
  10 using System;
  11 using System.Xml.XPath;
  12
  13 namespace System.Xml
  14 {
  15         public class XmlSignificantWhitespace : XmlCharacterData
  16         {
  17                 // Constructor
  18                 protected internal XmlSignificantWhitespace (string strData, XmlDocument doc)
  19                         : base (strData, doc)
  20                 {
  21                 }
  22
  23                 // Properties
  24                 public override string LocalName {
  25                         get { return "#significant-whitespace"; }
  26                 }
  27
  28                 public override string Name {
  29                         get { return "#significant-whitespace"; }
  30                 }
  31
  32                 public override XmlNodeType NodeType {
  33                         get { return XmlNodeType.SignificantWhitespace; }
  34                 }
  35
  36                 internal override XPathNodeType XPathNodeType {
  37                         get {
  38                                 return XPathNodeType.SignificantWhitespace;
  39                         }
  40                 }
  41
  42                 public override string Value {
  43                         get { return Data; }
  44                         set {
  45                                 if (IsValidWhitespaceChar (value) == false)
  46                                         throw new ArgumentException ("Invalid whitespace characters.");
  47                                 base.Data = value;
  48                         }
  49                 }
  50
  51                 // Methods
  52                 public override XmlNode CloneNode (bool deep)
  53                 {
  54                         return new XmlSignificantWhitespace (Data, OwnerDocument);
  55                 }
  56
  57                 public override void WriteContentTo (XmlWriter w) {}
  58
  59                 public override void WriteTo (XmlWriter w)
  60                 {
  61                         w.WriteWhitespace (Data);
  62                 }
  63
  64                 private bool IsValidWhitespaceChar (string text)
  65                 {
  66                         foreach (char c in text)
  67                                 if ((c != ' ') && (c != '\r') && (c != '\n') && (c != '\t'))
  68                                         return false;
  69                         return true;
  70                 }
  71         }
  72 }