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

   1 //
   2 // System.Xml.XmlAttribute
   3 //
   4 // Author:
   5 //   Jason Diamond (jason@injektilo.org)
   6 //
   7 // (C) 2002 Jason Diamond  http://injektilo.org/
   8 //
   9
  10 using System;
  11 using System.Collections;
  12
  13 namespace System.Xml
  14 {
  15         public class XmlElement : XmlLinkedNode
  16         {
  17                 #region Fields
  18
  19                 private XmlAttributeCollection attributes;
  20                 private XmlLinkedNode lastLinkedChild;
  21                 private string localName;
  22                 private string namespaceURI;
  23                 private string prefix;
  24
  25                 #endregion
  26
  27                 #region Constructor
  28
  29                 protected internal XmlElement (
  30                         string prefix,
  31                         string localName,
  32                         string namespaceURI,
  33                         XmlDocument doc) : base (doc)
  34                 {
  35                         this.prefix = prefix;
  36                         this.localName = localName;
  37                         this.namespaceURI = namespaceURI;
  38
  39                         attributes = new XmlAttributeCollection (this);
  40                 }
  41
  42                 #endregion
  43
  44                 #region Properties
  45
  46                 public override XmlAttributeCollection Attributes {
  47                         get { return attributes; }
  48                 }
  49
  50                 public virtual bool HasAttributes {
  51                         get { return attributes.Count > 0; }
  52                 }
  53
  54                 [MonoTODO ("Setter.")]
  55                 public override string InnerXml {
  56                         get {
  57                                 // Not sure why this is an override.  Passing through for now.
  58                                 return base.InnerXml;
  59                         }
  60                         set { throw new NotImplementedException (); }
  61                 }
  62
  63                 [MonoTODO]
  64                 public bool IsEmpty {
  65                         get { throw new NotImplementedException (); }
  66
  67                         set { throw new NotImplementedException (); }
  68                 }
  69
  70                 internal override XmlLinkedNode LastLinkedChild {
  71                         get { return lastLinkedChild; }
  72
  73                         set { lastLinkedChild = value; }
  74                 }
  75
  76                 public override string LocalName {
  77                         get { return localName; }
  78                 }
  79
  80                 public override string Name {
  81                         get {
  82                                 return prefix != String.Empty ? prefix + ":" + localName : localName;
  83                         }
  84                 }
  85
  86                 public override string NamespaceURI {
  87                         get { return namespaceURI; }
  88                 }
  89
  90                 [MonoTODO]
  91                 public override XmlNode NextSibling {
  92                         get {
  93                                 return base.NextSibling;
  94                         }
  95                 }
  96
  97                 public override XmlNodeType NodeType {
  98                         get {
  99                                 return XmlNodeType.Element;
 100                         }
 101                 }
 102
 103                 [MonoTODO]
 104                 public override XmlDocument OwnerDocument {
 105                         get {
 106                                 return base.OwnerDocument;
 107                         }
 108                 }
 109
 110                 public override string Prefix {
 111                         get {
 112                                 return prefix;
 113                         }
 114                 }
 115
 116                 #endregion
 117
 118                 #region Methods
 119
 120                 [MonoTODO]
 121                 public override XmlNode CloneNode (bool deep)
 122                 {
 123                         XmlNode node =  new XmlElement (prefix, localName, namespaceURI,
 124                                                         OwnerDocument);
 125
 126                         for (int i = 0; i < node.Attributes.Count; i++)
 127                                 node.AppendChild (node.Attributes [i].CloneNode (false));
 128
 129                         if (deep) {
 130                                 while ((node != null) && (node.HasChildNodes)) {
 131                                         AppendChild (node.NextSibling.CloneNode (true));
 132                                         node = node.NextSibling;
 133                                 }
 134                         } // shallow cloning
 135
 136                         //
 137                         // Reminder: Also look into Default attributes.
 138                         //
 139                         return node;
 140                 }
 141
 142                 [MonoTODO]
 143                 public virtual string GetAttribute (string name)
 144                 {
 145                         XmlNode attributeNode = Attributes.GetNamedItem (name);
 146                         return attributeNode != null ? attributeNode.Value : String.Empty;
 147                 }
 148
 149                 [MonoTODO]
 150                 public virtual string GetAttribute (string localName, string namespaceURI)
 151                 {
 152                         XmlNode attributeNode = Attributes.GetNamedItem (localName, namespaceURI);
 153                         return attributeNode != null ? attributeNode.Value : String.Empty;
 154                 }
 155
 156                 [MonoTODO]
 157                 public virtual XmlAttribute GetAttributeNode (string name)
 158                 {
 159                         XmlNode attributeNode = Attributes.GetNamedItem (name);
 160                         return attributeNode != null ? attributeNode as XmlAttribute : null;
 161                 }
 162
 163                 [MonoTODO]
 164                 public virtual XmlAttribute GetAttributeNode (string localName, string namespaceURI)
 165                 {
 166                         XmlNode attributeNode = Attributes.GetNamedItem (localName, namespaceURI);
 167                         return attributeNode != null ? attributeNode as XmlAttribute : null;
 168                 }
 169
 170                 public virtual XmlNodeList GetElementsByTagName (string name)
 171                 {
 172                         ArrayList nodeArrayList = new ArrayList ();
 173                         this.searchNodesRecursively (this, name, nodeArrayList);
 174                         return new XmlNodeArrayList (nodeArrayList);
 175                 }
 176
 177                 private void searchNodesRecursively (XmlNode argNode, string argName, ArrayList argArrayList)
 178                 {
 179                         XmlNodeList xmlNodeList = argNode.ChildNodes;
 180                         foreach (XmlNode node in xmlNodeList){
 181                                 if (node.Name.Equals (argName))
 182                                         argArrayList.Add (node);
 183                                 else
 184                                         this.searchNodesRecursively (node, argName, argArrayList);
 185                         }
 186                 }
 187
 188                 [MonoTODO]
 189                 public virtual XmlNodeList GetElementsByTagName (string localName, string namespaceURI)
 190                 {
 191                         throw new NotImplementedException ();
 192                 }
 193
 194                 [MonoTODO]
 195                 public virtual bool HasAttribute (string name)
 196                 {
 197                         XmlNode attributeNode = Attributes.GetNamedItem (name);
 198                         return attributeNode != null;
 199                 }
 200
 201                 [MonoTODO]
 202                 public virtual bool HasAttribute (string localName, string namespaceURI)
 203                 {
 204                         throw new NotImplementedException ();
 205                 }
 206
 207                 [MonoTODO ("Don't remove default attributes.")]
 208                 public override void RemoveAll ()
 209                 {
 210                         // Remove the child nodes.
 211                         base.RemoveAll ();
 212
 213                         // Remove all attributes.
 214                         attributes.RemoveAll ();
 215                 }
 216
 217                 [MonoTODO]
 218                 public virtual void RemoveAllAttributes ()
 219                 {
 220                         throw new NotImplementedException ();
 221                 }
 222
 223                 [MonoTODO]
 224                 public virtual void RemoveAttribute (string name)
 225                 {
 226                         throw new NotImplementedException ();
 227                 }
 228
 229                 [MonoTODO]
 230                 public virtual void RemoveAttribute (string localName, string namespaceURI)
 231                 {
 232                         throw new NotImplementedException ();
 233                 }
 234
 235                 [MonoTODO]
 236                 public virtual XmlNode RemoveAttributeAt (int i)
 237                 {
 238                         throw new NotImplementedException ();
 239                 }
 240
 241                 [MonoTODO]
 242                 public virtual XmlAttribute RemoveAttributeNode (XmlAttribute oldAttr)
 243                 {
 244                         throw new NotImplementedException ();
 245                 }
 246
 247                 [MonoTODO]
 248                 public virtual XmlAttribute RemoveAttributeNode (string localName, string namespaceURI)
 249                 {
 250                         throw new NotImplementedException ();
 251                 }
 252
 253                 [MonoTODO]
 254                 public virtual void SetAttribute (string name, string value)
 255                 {
 256                         XmlAttribute attribute = OwnerDocument.CreateAttribute (name);
 257                         attribute.SetParentNode (this);
 258                         attribute.Value = value;
 259                         Attributes.SetNamedItem (attribute);
 260                 }
 261
 262                 [MonoTODO]
 263                 public virtual string SetAttribute (string localName, string namespaceURI, string value)
 264                 {
 265                         throw new NotImplementedException ();
 266                 }
 267
 268                 [MonoTODO]
 269                 public virtual XmlAttribute SetAttributeNode (XmlAttribute newAttr)
 270                 {
 271                         newAttr.SetParentNode(this);
 272                         XmlNode oldAttr = Attributes.SetNamedItem(newAttr);
 273                         return oldAttr != null ? oldAttr as XmlAttribute : null;
 274                 }
 275
 276                 [MonoTODO]
 277                 public virtual XmlAttribute SetAttributeNode (string localName, string namespaceURI)
 278                 {
 279                         throw new NotImplementedException ();
 280                 }
 281
 282                 public override void WriteContentTo (XmlWriter w)
 283                 {
 284                         foreach(XmlNode childNode in ChildNodes)
 285                                 childNode.WriteTo(w);
 286                 }
 287
 288                 public override void WriteTo (XmlWriter w)
 289                 {
 290                         w.WriteStartElement(Prefix, LocalName, NamespaceURI);
 291
 292                         foreach(XmlNode attributeNode in Attributes)
 293                                 attributeNode.WriteTo(w);
 294
 295                         WriteContentTo(w);
 296
 297                         w.WriteEndElement();
 298                 }
 299
 300                 #endregion
 301         }
 302 }