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

   1 //
   2 // System.Xml.XmlNamedNodeMap
   3 //
   4 // Author:
   5 //   Jason Diamond (jason@injektilo.org)
   6 //   Duncan Mak  (duncan@ximian.com)
   7 //
   8 // (C) 2002 Jason Diamond  http://injektilo.org/
   9 //
  10
  11 using System;
  12 using System.Collections;
  13
  14 namespace System.Xml
  15 {
  16         public class XmlNamedNodeMap : IEnumerable
  17         {
  18                 XmlNode parent;
  19                 ArrayList nodeList;
  20                 bool readOnly = false;
  21
  22                 internal XmlNamedNodeMap (XmlNode parent)
  23                 {
  24                         this.parent = parent;
  25                         nodeList = new ArrayList ();
  26                 }
  27
  28                 public virtual int Count {
  29                         get { return nodeList.Count; }
  30                 }
  31
  32                 public virtual IEnumerator GetEnumerator ()
  33                 {
  34                         return nodeList.GetEnumerator ();
  35                 }
  36
  37                 public virtual XmlNode GetNamedItem (string name)
  38                 {
  39                         foreach (XmlNode node in nodeList) {
  40                                 if (node.Name == name)
  41                                         return node;
  42                         }
  43                         return null;
  44                 }
  45
  46                 public virtual XmlNode GetNamedItem (string localName, string namespaceURI)
  47                 {
  48                         foreach (XmlNode node in nodeList) {
  49                                 if ((node.LocalName == localName)
  50                                     && (node.NamespaceURI == namespaceURI))
  51                                         return node;
  52                         }
  53
  54                         return null;
  55                 }
  56
  57                 public virtual XmlNode Item (int index)
  58                 {
  59                         if (index < 0 || index > nodeList.Count)
  60                                 return null;
  61                         else
  62                                 return (XmlNode) nodeList [index];
  63                 }
  64
  65                 public virtual XmlNode RemoveNamedItem (string name)
  66                 {
  67                         foreach (XmlNode node in nodeList)
  68                                 if (node.Name == name) {
  69                                         if (node.IsReadOnly)
  70                                                 throw new InvalidOperationException ("Cannot remove. This node is read only: " + name);
  71                                         nodeList.Remove (node);
  72                                         return node;
  73                                 }
  74                         return null;
  75                 }
  76
  77                 public virtual XmlNode RemoveNamedItem (string localName, string namespaceURI)
  78                 {
  79                         foreach (XmlNode node in nodeList)
  80                                 if ((node.LocalName == localName)
  81                                     && (node.NamespaceURI == namespaceURI)) {
  82                                         nodeList.Remove (node);
  83                                         return node;
  84                                 }
  85
  86                         return null;
  87                 }
  88
  89                 public virtual XmlNode SetNamedItem (XmlNode node)
  90                 {
  91                         return SetNamedItem(node, -1);
  92                 }
  93
  94                 internal XmlNode SetNamedItem (XmlNode node, int pos)
  95                 {
  96                         if (readOnly || (node.OwnerDocument != parent.OwnerDocument))
  97                                 throw new ArgumentException ("Cannot add to NodeMap.");
  98
  99                         foreach (XmlNode x in nodeList)
 100                                 if(x.LocalName == node.LocalName && x.NamespaceURI == node.NamespaceURI) {
 101                                         nodeList.Remove (x);
 102                                         nodeList.Add (node);
 103                                         return x;
 104                                 }
 105
 106                         if(pos < 0)
 107                                 nodeList.Add (node);
 108                         else
 109                                 nodeList.Insert(pos, node);
 110                         return null;
 111                 }
 112
 113                 internal ArrayList Nodes { get { return nodeList; } }
 114         }
 115 }