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 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33 using System.Collections;
  34 using Mono.Xml;
  35
  36 namespace System.Xml
  37 {
  38         public class XmlNamedNodeMap : IEnumerable
  39         {
  40                 XmlNode parent;
  41                 ArrayList nodeList;
  42                 bool readOnly = false;
  43
  44                 internal XmlNamedNodeMap (XmlNode parent)
  45                 {
  46                         this.parent = parent;
  47                         nodeList = new ArrayList ();
  48                 }
  49
  50                 public virtual int Count {
  51                         get { return nodeList.Count; }
  52                 }
  53
  54                 public virtual IEnumerator GetEnumerator ()
  55                 {
  56                         return nodeList.GetEnumerator ();
  57                 }
  58
  59                 public virtual XmlNode GetNamedItem (string name)
  60                 {
  61                         for (int i = 0; i < nodeList.Count; i++) {
  62                                 XmlNode node = (XmlNode) nodeList [i];
  63                                 if (node.Name == name)
  64                                         return node;
  65                         }
  66                         return null;
  67                 }
  68
  69                 public virtual XmlNode GetNamedItem (string localName, string namespaceURI)
  70                 {
  71                         for (int i = 0; i < nodeList.Count; i++) {
  72                                 XmlNode node = (XmlNode) nodeList [i];
  73                                 if ((node.LocalName == localName)
  74                                     && (node.NamespaceURI == namespaceURI))
  75                                         return node;
  76                         }
  77
  78                         return null;
  79                 }
  80
  81                 public virtual XmlNode Item (int index)
  82                 {
  83                         if (index < 0 || index >= nodeList.Count)
  84                                 return null;
  85                         else
  86                                 return (XmlNode) nodeList [index];
  87                 }
  88
  89                 public virtual XmlNode RemoveNamedItem (string name)
  90                 {
  91                         for (int i = 0; i < nodeList.Count; i++) {
  92                                 XmlNode node = (XmlNode) nodeList [i];
  93                                 if (node.Name == name) {
  94                                         if (node.IsReadOnly)
  95                                                 throw new InvalidOperationException ("Cannot remove. This node is read only: " + name);
  96                                         nodeList.Remove (node);
  97                                         // Since XmlAttributeCollection does not override
  98                                         // it while attribute have to keep it in the
  99                                         // collection, it adds to the collection immediately.
 100                                         XmlAttribute attr = node as XmlAttribute;
 101                                         if (attr != null) {
 102                                                 DTDAttributeDefinition def = attr.GetAttributeDefinition ();
 103                                                 if (def != null && def.DefaultValue != null) {
 104                                                         XmlAttribute newAttr = attr.OwnerDocument.CreateAttribute (attr.Prefix, attr.LocalName, attr.NamespaceURI, true, false);
 105                                                         newAttr.Value = def.DefaultValue;
 106                                                         newAttr.SetDefault ();
 107                                                         attr.OwnerElement.SetAttributeNode (newAttr);
 108                                                 }
 109                                         }
 110                                         return node;
 111                                 }
 112                         }
 113                         return null;
 114                 }
 115
 116                 public virtual XmlNode RemoveNamedItem (string localName, string namespaceURI)
 117                 {
 118                         for (int i = 0; i < nodeList.Count; i++) {
 119                                 XmlNode node = (XmlNode) nodeList [i];
 120                                 if ((node.LocalName == localName)
 121                                     && (node.NamespaceURI == namespaceURI)) {
 122                                         nodeList.Remove (node);
 123                                         return node;
 124                                 }
 125                         }
 126                         return null;
 127                 }
 128
 129                 public virtual XmlNode SetNamedItem (XmlNode node)
 130                 {
 131                         return SetNamedItem (node, -1, true);
 132                 }
 133
 134                 internal XmlNode SetNamedItem (XmlNode node, bool raiseEvent)
 135                 {
 136                         return SetNamedItem (node, -1, raiseEvent);
 137                 }
 138
 139                 internal XmlNode SetNamedItem (XmlNode node, int pos, bool raiseEvent)
 140                 {
 141                         if (readOnly || (node.OwnerDocument != parent.OwnerDocument))
 142                                 throw new ArgumentException ("Cannot add to NodeMap.");
 143
 144                         if (raiseEvent)
 145                                 parent.OwnerDocument.onNodeInserting (node, parent);
 146
 147                         try {
 148                                 for (int i = 0; i < nodeList.Count; i++) {
 149                                         XmlNode x = (XmlNode) nodeList [i];
 150                                         if(x.LocalName == node.LocalName && x.NamespaceURI == node.NamespaceURI) {
 151                                                 nodeList.Remove (x);
 152                                                 if (pos < 0)
 153                                                         nodeList.Add (node);
 154                                                 else
 155                                                         nodeList.Insert (pos, node);
 156                                                 return x;
 157                                         }
 158                                 }
 159
 160                                 if(pos < 0)
 161                                         nodeList.Add (node);
 162                                 else
 163                                         nodeList.Insert (pos, node);
 164
 165                                 return node;
 166                         } finally {
 167                                 if (raiseEvent)
 168                                         parent.OwnerDocument.onNodeInserted (node, parent);
 169                         }
 170
 171                 }
 172
 173                 internal ArrayList Nodes { get { return nodeList; } }
 174         }
 175 }