2 // System.Xml.XPath.XPathNavigator
5 // Jason Diamond (jason@injektilo.org)
6 // Atsushi Enomoto (atsushi@ximian.com)
8 // (C) 2002 Jason Diamond http://injektilo.org/
9 // (C) 2004 Novell Inc.
13 // Permission is hereby granted, free of charge, to any person obtaining
14 // a copy of this software and associated documentation files (the
15 // "Software"), to deal in the Software without restriction, including
16 // without limitation the rights to use, copy, modify, merge, publish,
17 // distribute, sublicense, and/or sell copies of the Software, and to
18 // permit persons to whom the Software is furnished to do so, subject to
19 // the following conditions:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 using System.Collections;
36 using System.Collections.Generic;
37 using System.Diagnostics;
41 using System.Xml.Schema;
45 using NSResolver = System.Xml.IXmlNamespaceResolver;
47 using NSResolver = System.Xml.XmlNamespaceManager;
50 namespace System.Xml.XPath
53 public abstract class XPathNavigator : XPathItem,
54 ICloneable, IXPathNavigable, IXmlNamespaceResolver
56 public abstract class XPathNavigator : ICloneable
59 #region Static members
61 public static IEqualityComparer NavigatorComparer {
62 get { return XPathNavigatorComparer.Instance; }
69 protected XPathNavigator ()
77 public abstract string BaseURI { get; }
80 public virtual bool CanEdit {
84 public virtual bool HasAttributes {
86 if (!MoveToFirstAttribute ())
93 public virtual bool HasChildren {
95 if (!MoveToFirstChild ())
102 public abstract bool HasAttributes { get; }
104 public abstract bool HasChildren { get; }
107 public abstract bool IsEmptyElement { get; }
109 public abstract string LocalName { get; }
111 public abstract string Name { get; }
113 public abstract string NamespaceURI { get; }
115 public abstract XmlNameTable NameTable { get; }
117 public abstract XPathNodeType NodeType { get; }
119 public abstract string Prefix { get; }
122 public virtual string XmlLang {
124 XPathNavigator nav = Clone ();
125 switch (nav.NodeType) {
126 case XPathNodeType.Attribute:
127 case XPathNodeType.Namespace:
132 if (nav.MoveToAttribute ("lang", "http://www.w3.org/XML/1998/namespace"))
134 } while (nav.MoveToParent ());
139 public abstract string Value { get; }
141 public abstract string XmlLang { get; }
148 public abstract XPathNavigator Clone ();
150 public virtual XmlNodeOrder ComparePosition (XPathNavigator nav)
152 if (IsSamePosition (nav))
153 return XmlNodeOrder.Same;
155 // quick check for direct descendant
156 if (IsDescendant (nav))
157 return XmlNodeOrder.Before;
159 // quick check for direct ancestor
160 if (nav.IsDescendant (this))
161 return XmlNodeOrder.After;
163 XPathNavigator nav1 = Clone ();
164 XPathNavigator nav2 = nav.Clone ();
166 // check if document instance is the same.
169 if (!nav1.IsSamePosition (nav2))
170 return XmlNodeOrder.Unknown;
175 while (nav1.MoveToParent ())
179 while (nav2.MoveToParent ())
183 // find common parent depth
185 for (;common > depth2; common--)
186 nav1.MoveToParent ();
187 for (int i = depth2; i > common; i--)
188 nav2.MoveToParent ();
189 while (!nav1.IsSamePosition (nav2)) {
190 nav1.MoveToParent ();
191 nav2.MoveToParent ();
195 // For each this and target, move to the node that is
196 // ancestor of the node and child of the common parent.
198 for (int i = depth1; i > common + 1; i--)
199 nav1.MoveToParent ();
201 for (int i = depth2; i > common + 1; i--)
202 nav2.MoveToParent ();
204 // Those children of common parent are comparable.
205 // namespace nodes precede to attributes, and they
206 // precede to other nodes.
207 if (nav1.NodeType == XPathNodeType.Namespace) {
208 if (nav2.NodeType != XPathNodeType.Namespace)
209 return XmlNodeOrder.Before;
210 while (nav1.MoveToNextNamespace ())
211 if (nav1.IsSamePosition (nav2))
212 return XmlNodeOrder.Before;
213 return XmlNodeOrder.After;
215 if (nav2.NodeType == XPathNodeType.Namespace)
216 return XmlNodeOrder.After;
217 if (nav1.NodeType == XPathNodeType.Attribute) {
218 if (nav2.NodeType != XPathNodeType.Attribute)
219 return XmlNodeOrder.Before;
220 while (nav1.MoveToNextAttribute ())
221 if (nav1.IsSamePosition (nav2))
222 return XmlNodeOrder.Before;
223 return XmlNodeOrder.After;
225 while (nav1.MoveToNext ())
226 if (nav1.IsSamePosition (nav2))
227 return XmlNodeOrder.Before;
228 return XmlNodeOrder.After;
231 public virtual XPathExpression Compile (string xpath)
233 return XPathExpression.Compile (xpath);
236 internal virtual XPathExpression Compile (string xpath, System.Xml.Xsl.IStaticXsltContext ctx)
238 return XPathExpression.Compile (xpath, null, ctx);
241 public virtual object Evaluate (string xpath)
243 return Evaluate (Compile (xpath));
246 public virtual object Evaluate (XPathExpression expr)
248 return Evaluate (expr, null);
251 public virtual object Evaluate (XPathExpression expr, XPathNodeIterator context)
253 return Evaluate (expr, context, null);
256 internal virtual object Evaluate (XPathExpression expr, XPathNodeIterator context, NSResolver ctx)
258 CompiledExpression cexpr = (CompiledExpression) expr;
260 ctx = cexpr.NamespaceManager;
263 context = new NullIterator (this, ctx);
264 BaseIterator iterContext = (BaseIterator) context;
265 iterContext.NamespaceManager = ctx;
266 return cexpr.Evaluate (iterContext);
269 internal XPathNodeIterator EvaluateNodeSet (XPathExpression expr, XPathNodeIterator context, NSResolver ctx)
271 CompiledExpression cexpr = (CompiledExpression) expr;
273 ctx = cexpr.NamespaceManager;
276 context = new NullIterator (this, cexpr.NamespaceManager);
277 BaseIterator iterContext = (BaseIterator) context;
278 iterContext.NamespaceManager = ctx;
279 return cexpr.EvaluateNodeSet (iterContext);
282 internal string EvaluateString (XPathExpression expr, XPathNodeIterator context, NSResolver ctx)
284 CompiledExpression cexpr = (CompiledExpression) expr;
286 ctx = cexpr.NamespaceManager;
289 context = new NullIterator (this, cexpr.NamespaceManager);
290 BaseIterator iterContext = (BaseIterator) context;
291 iterContext.NamespaceManager = ctx;
292 return cexpr.EvaluateString (iterContext);
295 internal double EvaluateNumber (XPathExpression expr, XPathNodeIterator context, NSResolver ctx)
297 CompiledExpression cexpr = (CompiledExpression) expr;
299 ctx = cexpr.NamespaceManager;
302 context = new NullIterator (this, cexpr.NamespaceManager);
303 BaseIterator iterContext = (BaseIterator) context;
304 iterContext.NamespaceManager = ctx;
305 return cexpr.EvaluateNumber (iterContext);
308 internal bool EvaluateBoolean (XPathExpression expr, XPathNodeIterator context, NSResolver ctx)
310 CompiledExpression cexpr = (CompiledExpression) expr;
312 ctx = cexpr.NamespaceManager;
315 context = new NullIterator (this, cexpr.NamespaceManager);
316 BaseIterator iterContext = (BaseIterator) context;
317 iterContext.NamespaceManager = ctx;
318 return cexpr.EvaluateBoolean (iterContext);
322 public virtual string GetAttribute (string localName, string namespaceURI)
324 if (!MoveToAttribute (localName, namespaceURI))
326 string value = Value;
331 public virtual string GetNamespace (string name)
333 if (!MoveToNamespace (name))
335 string value = Value;
341 public abstract string GetAttribute (string localName, string namespaceURI);
343 public abstract string GetNamespace (string name);
346 object ICloneable.Clone ()
351 public virtual bool IsDescendant (XPathNavigator nav)
356 while (nav.MoveToParent ())
358 if (IsSamePosition (nav))
365 public abstract bool IsSamePosition (XPathNavigator other);
367 public virtual bool Matches (string xpath)
369 return Matches (Compile (xpath));
372 public virtual bool Matches (XPathExpression expr)
374 Expression e = ((CompiledExpression) expr).ExpressionNode;
376 return NodeType == XPathNodeType.Root;
378 NodeTest nt = e as NodeTest;
380 switch (nt.Axis.Axis) {
385 throw new XPathException ("Only child and attribute pattern are allowed for a pattern.");
387 return nt.Match (((CompiledExpression)expr).NamespaceManager, this);
389 if (e is ExprFilter) {
391 e = ((ExprFilter) e).LeftHandSide;
392 } while (e is ExprFilter);
394 if (e is NodeTest && !((NodeTest) e).Match (((CompiledExpression) expr).NamespaceManager, this))
398 XPathResultType resultType = e.ReturnType;
399 switch (resultType) {
400 case XPathResultType.Any:
401 case XPathResultType.NodeSet:
407 switch (e.EvaluatedNodeType) {
408 case XPathNodeType.Attribute:
409 case XPathNodeType.Namespace:
410 if (NodeType != e.EvaluatedNodeType)
415 XPathNodeIterator nodes;
416 nodes = this.Select (expr);
417 while (nodes.MoveNext ()) {
418 if (IsSamePosition (nodes.Current))
422 // ancestors might select this node.
424 XPathNavigator navigator = Clone ();
426 while (navigator.MoveToParent ()) {
427 nodes = navigator.Select (expr);
429 while (nodes.MoveNext ()) {
430 if (IsSamePosition (nodes.Current))
438 public abstract bool MoveTo (XPathNavigator other);
441 public virtual bool MoveToAttribute (string localName, string namespaceURI)
443 if (MoveToFirstAttribute ()) {
445 if (LocalName == localName && NamespaceURI == namespaceURI)
447 } while (MoveToNextAttribute ());
453 public virtual bool MoveToNamespace (string name)
455 if (MoveToFirstNamespace ()) {
457 if (LocalName == name)
459 } while (MoveToNextNamespace ());
466 public virtual bool MoveToFirst ()
468 if (MoveToPrevious ()) {
469 // It would be able to invoke MoveToPrevious() until the end, but this way would be much faster
478 public virtual bool MoveToFirst ()
480 return MoveToFirstImpl ();
483 public virtual void MoveToRoot ()
485 while (MoveToParent ())
489 public abstract bool MoveToAttribute (string localName, string namespaceURI);
491 public abstract bool MoveToNamespace (string name);
493 public abstract bool MoveToFirst ();
495 public abstract void MoveToRoot ();
498 internal bool MoveToFirstImpl ()
501 case XPathNodeType.Attribute:
502 case XPathNodeType.Namespace:
505 if (!MoveToParent ())
507 // Follow these 2 steps so that we can skip
508 // some types of nodes .
514 public abstract bool MoveToFirstAttribute ();
516 public abstract bool MoveToFirstChild ();
518 public bool MoveToFirstNamespace ()
520 return MoveToFirstNamespace (XPathNamespaceScope.All);
523 public abstract bool MoveToFirstNamespace (XPathNamespaceScope namespaceScope);
525 public abstract bool MoveToId (string id);
527 public abstract bool MoveToNext ();
529 public abstract bool MoveToNextAttribute ();
531 public bool MoveToNextNamespace ()
533 return MoveToNextNamespace (XPathNamespaceScope.All);
536 public abstract bool MoveToNextNamespace (XPathNamespaceScope namespaceScope);
538 public abstract bool MoveToParent ();
540 public abstract bool MoveToPrevious ();
542 public virtual XPathNodeIterator Select (string xpath)
544 return Select (Compile (xpath));
547 public virtual XPathNodeIterator Select (XPathExpression expr)
549 return Select (expr, null);
552 internal virtual XPathNodeIterator Select (XPathExpression expr, NSResolver ctx)
554 CompiledExpression cexpr = (CompiledExpression) expr;
556 ctx = cexpr.NamespaceManager;
558 BaseIterator iter = new NullIterator (this, ctx);
559 return cexpr.EvaluateNodeSet (iter);
562 public virtual XPathNodeIterator SelectAncestors (XPathNodeType type, bool matchSelf)
564 Axes axis = (matchSelf) ? Axes.AncestorOrSelf : Axes.Ancestor;
565 return SelectTest (new NodeTypeTest (axis, type));
568 public virtual XPathNodeIterator SelectAncestors (string name, string namespaceURI, bool matchSelf)
571 throw new ArgumentNullException ("name");
572 if (namespaceURI == null)
573 throw new ArgumentNullException ("namespaceURI");
575 Axes axis = (matchSelf) ? Axes.AncestorOrSelf : Axes.Ancestor;
576 XmlQualifiedName qname = new XmlQualifiedName (name, namespaceURI);
577 return SelectTest (new NodeNameTest (axis, qname, true));
580 public virtual XPathNodeIterator SelectChildren (XPathNodeType type)
582 return SelectTest (new NodeTypeTest (Axes.Child, type));
585 public virtual XPathNodeIterator SelectChildren (string name, string namespaceURI)
588 throw new ArgumentNullException ("name");
589 if (namespaceURI == null)
590 throw new ArgumentNullException ("namespaceURI");
592 Axes axis = Axes.Child;
593 XmlQualifiedName qname = new XmlQualifiedName (name, namespaceURI);
594 return SelectTest (new NodeNameTest (axis, qname, true));
597 public virtual XPathNodeIterator SelectDescendants (XPathNodeType type, bool matchSelf)
599 Axes axis = (matchSelf) ? Axes.DescendantOrSelf : Axes.Descendant;
600 return SelectTest (new NodeTypeTest (axis, type));
603 public virtual XPathNodeIterator SelectDescendants (string name, string namespaceURI, bool matchSelf)
606 throw new ArgumentNullException ("name");
607 if (namespaceURI == null)
608 throw new ArgumentNullException ("namespaceURI");
611 Axes axis = (matchSelf) ? Axes.DescendantOrSelf : Axes.Descendant;
612 XmlQualifiedName qname = new XmlQualifiedName (name, namespaceURI);
613 return SelectTest (new NodeNameTest (axis, qname, true));
616 internal XPathNodeIterator SelectTest (NodeTest test)
618 return test.EvaluateNodeSet (new NullIterator (this));
621 public override string ToString ()
630 public virtual bool CheckValidity (XmlSchemaSet schemas, ValidationEventHandler handler)
632 XmlReaderSettings settings = new XmlReaderSettings ();
633 settings.NameTable = NameTable;
634 settings.SetSchemas (schemas);
635 settings.ValidationEventHandler += handler;
636 settings.ValidationType = ValidationType.Schema;
638 XmlReader r = XmlReader.Create (
639 ReadSubtree (), settings);
642 } catch (XmlSchemaValidationException) {
648 public virtual XPathNavigator CreateNavigator ()
654 public virtual object Evaluate (string xpath, IXmlNamespaceResolver nsResolver)
656 return Evaluate (Compile (xpath), null, nsResolver);
660 public virtual IDictionary<string, string> GetNamespacesInScope (XmlNamespaceScope scope)
662 IDictionary<string, string> table = new Dictionary<string, string> ();
663 XPathNamespaceScope xpscope =
664 scope == XmlNamespaceScope.Local ?
665 XPathNamespaceScope.Local :
666 scope == XmlNamespaceScope.ExcludeXml ?
667 XPathNamespaceScope.ExcludeXml :
668 XPathNamespaceScope.All;
669 XPathNavigator nav = Clone ();
670 if (nav.NodeType != XPathNodeType.Element)
672 if (!nav.MoveToFirstNamespace (xpscope))
675 table.Add (nav.Name, nav.Value);
676 } while (nav.MoveToNextNamespace (xpscope));
680 public virtual string LookupNamespace (string prefix)
682 XPathNavigator nav = Clone ();
683 if (nav.NodeType != XPathNodeType.Element)
685 if (nav.MoveToNamespace (prefix))
690 public virtual string LookupPrefix (string namespaceUri)
692 XPathNavigator nav = Clone ();
693 if (nav.NodeType != XPathNodeType.Element)
695 if (!nav.MoveToFirstNamespace ())
698 if (nav.Value == namespaceUri)
700 } while (nav.MoveToNextNamespace ());
704 private bool MoveTo (XPathNodeIterator iter)
706 if (iter.MoveNext ()) {
707 MoveTo (iter.Current);
714 public virtual bool MoveToChild (XPathNodeType type)
716 return MoveTo (SelectChildren (type));
719 public virtual bool MoveToChild (string localName, string namespaceURI)
721 return MoveTo (SelectChildren (localName, namespaceURI));
724 public virtual bool MoveToNext (string localName, string namespaceURI)
726 XPathNavigator nav = Clone ();
727 while (nav.MoveToNext ()) {
728 if (nav.LocalName == localName &&
729 nav.NamespaceURI == namespaceURI) {
737 public virtual bool MoveToNext (XPathNodeType type)
739 XPathNavigator nav = Clone ();
740 while (nav.MoveToNext ()) {
741 if (nav.NodeType == type) {
749 public virtual bool MoveToFollowing (string localName,
752 return MoveToFollowing (localName, namespaceURI, null);
755 public virtual bool MoveToFollowing (string localName,
756 string namespaceURI, XPathNavigator end)
758 if (localName == null)
759 throw new ArgumentNullException ("localName");
760 if (namespaceURI == null)
761 throw new ArgumentNullException ("namespaceURI");
762 localName = NameTable.Get (localName);
763 if (localName == null)
765 namespaceURI = NameTable.Get (namespaceURI);
766 if (namespaceURI == null)
769 XPathNavigator nav = Clone ();
770 switch (nav.NodeType) {
771 case XPathNodeType.Attribute:
772 case XPathNodeType.Namespace:
777 if (!nav.MoveToFirstChild ()) {
779 if (!nav.MoveToNext ()) {
780 if (!nav.MoveToParent ())
787 if (end != null && end.IsSamePosition (nav))
789 if (object.ReferenceEquals (localName, nav.LocalName) &&
790 object.ReferenceEquals (namespaceURI, nav.NamespaceURI)) {
797 public virtual bool MoveToFollowing (XPathNodeType type)
799 return MoveToFollowing (type, null);
802 public virtual bool MoveToFollowing (XPathNodeType type,
805 if (type == XPathNodeType.Root)
806 return false; // will never match
807 XPathNavigator nav = Clone ();
808 switch (nav.NodeType) {
809 case XPathNodeType.Attribute:
810 case XPathNodeType.Namespace:
815 if (!nav.MoveToFirstChild ()) {
817 if (!nav.MoveToNext ()) {
818 if (!nav.MoveToParent ())
825 if (end != null && end.IsSamePosition (nav))
827 if (nav.NodeType == type) {
835 public virtual XmlReader ReadSubtree ()
837 return new XPathNavigatorReader (this);
840 public virtual XPathNodeIterator Select (string xpath, IXmlNamespaceResolver nsResolver)
842 return Select (Compile (xpath), nsResolver);
845 public virtual XPathNavigator SelectSingleNode (string xpath)
847 return SelectSingleNode (xpath, null);
850 public virtual XPathNavigator SelectSingleNode (string xpath, IXmlNamespaceResolver nsResolver)
852 XPathExpression expr = Compile (xpath);
853 expr.SetContext (nsResolver);
854 return SelectSingleNode (expr);
857 public virtual XPathNavigator SelectSingleNode (XPathExpression expression)
859 XPathNodeIterator iter = Select (expression);
860 if (iter.MoveNext ())
867 public override object ValueAs (Type type, IXmlNamespaceResolver nsResolver)
869 throw new NotImplementedException ();
873 public virtual void WriteSubtree (XmlWriter writer)
875 XmlReader st = ReadSubtree ();
876 writer.WriteNode (st, false);
880 public virtual string InnerXml {
882 XmlReader r = ReadSubtree ();
884 // skip the element itself (or will reach to
885 // EOF if other than element) unless writing
888 if (NodeType != XPathNodeType.Root)
890 StringWriter sw = new StringWriter ();
891 XmlWriter xtw = XmlWriter.Create (sw);
892 while (!r.EOF && r.Depth > depth)
893 xtw.WriteNode (r, false);
894 return sw.ToString ();
898 if (NodeType == XPathNodeType.Attribute) {
907 public override bool IsNode {
912 public virtual string OuterXml {
914 StringWriter sw = new StringWriter ();
915 XmlTextWriter xtw = new XmlTextWriter (sw);
918 return sw.ToString ();
922 case XPathNodeType.Root:
923 case XPathNodeType.Attribute:
924 case XPathNodeType.Namespace:
925 throw new XmlException ("Setting OuterXml Root, Attribute and Namespace is not supported.");
935 public virtual IXmlSchemaInfo SchemaInfo {
942 public override object TypedValue {
945 case XPathNodeType.Element:
946 case XPathNodeType.Attribute:
949 XmlSchemaDatatype dt = XmlType.Datatype;
952 return dt.ParseValue (Value, NameTable, this as IXmlNamespaceResolver);
959 public virtual object UnderlyingObject {
960 get { throw new NotImplementedException (); }
963 public override bool ValueAsBoolean {
964 get { return XQueryConvert.StringToBoolean (Value); }
967 public override DateTime ValueAsDateTime {
968 get { return XmlConvert.ToDateTime (Value); }
971 public override double ValueAsDouble {
972 get { return XQueryConvert.StringToDouble (Value); }
975 public override int ValueAsInt {
976 get { return XQueryConvert.StringToInt (Value); }
979 public override long ValueAsLong {
980 get { return XQueryConvert.StringToInteger (Value); }
983 public override Type ValueType {
985 return SchemaInfo != null &&
986 SchemaInfo.SchemaType != null &&
987 SchemaInfo.SchemaType.Datatype != null ?
988 SchemaInfo.SchemaType.Datatype.ValueType
994 public override XmlSchemaType XmlType {
996 if (SchemaInfo != null)
997 return SchemaInfo.SchemaType;
1002 private XmlReader CreateFragmentReader (string fragment)
1004 XmlReaderSettings settings = new XmlReaderSettings ();
1005 settings.ConformanceLevel = ConformanceLevel.Fragment;
1006 XmlNamespaceManager nsmgr = new XmlNamespaceManager (NameTable);
1007 foreach (KeyValuePair<string,string> nss in GetNamespacesInScope (XmlNamespaceScope.All))
1008 nsmgr.AddNamespace (nss.Key, nss.Value);
1009 return XmlReader.Create (
1010 new StringReader (fragment),
1012 new XmlParserContext (NameTable, nsmgr, null, XmlSpace.None));
1015 // must override it.
1016 public virtual XmlWriter AppendChild ()
1018 throw new NotSupportedException ();
1021 public virtual void AppendChild (
1022 string xmlFragments)
1024 AppendChild (CreateFragmentReader (xmlFragments));
1027 public virtual void AppendChild (
1030 XmlWriter w = AppendChild ();
1032 w.WriteNode (reader, false);
1037 public virtual void AppendChild (
1040 AppendChild (new XPathNavigatorReader (nav));
1043 public virtual void AppendChildElement (string prefix, string name, string ns, string value)
1045 XmlWriter xw = AppendChild ();
1046 xw.WriteStartElement (prefix, name, ns);
1047 xw.WriteString (value);
1048 xw.WriteEndElement ();
1052 public virtual void CreateAttribute (string prefix, string localName, string namespaceURI, string value)
1054 using (XmlWriter w = CreateAttributes ()) {
1055 w.WriteAttributeString (prefix, localName, namespaceURI, value);
1059 // must override it.
1060 public virtual XmlWriter CreateAttributes ()
1062 throw new NotSupportedException ();
1065 // must override it.
1066 public virtual void DeleteSelf ()
1068 throw new NotSupportedException ();
1071 // must override it.
1072 public virtual void DeleteRange (XPathNavigator nav)
1074 throw new NotSupportedException ();
1077 public virtual XmlWriter ReplaceRange (XPathNavigator nav)
1079 throw new NotSupportedException ();
1082 public virtual XmlWriter InsertAfter ()
1085 case XPathNodeType.Root:
1086 case XPathNodeType.Attribute:
1087 case XPathNodeType.Namespace:
1088 throw new InvalidOperationException (String.Format ("Insertion after {0} is not allowed.", NodeType));
1090 XPathNavigator nav = Clone ();
1091 if (nav.MoveToNext ())
1092 return nav.InsertBefore ();
1093 else if (nav.MoveToParent ())
1094 return nav.AppendChild ();
1096 throw new InvalidOperationException ("Could not move to parent to insert sibling node");
1099 public virtual void InsertAfter (string xmlFragments)
1101 InsertAfter (CreateFragmentReader (xmlFragments));
1104 public virtual void InsertAfter (XmlReader reader)
1106 using (XmlWriter w = InsertAfter ()) {
1107 w.WriteNode (reader, false);
1112 public virtual void InsertAfter (XPathNavigator nav)
1114 InsertAfter (new XPathNavigatorReader (nav));
1117 public virtual XmlWriter InsertBefore ()
1119 throw new NotSupportedException ();
1122 public virtual void InsertBefore (string xmlFragments)
1124 InsertBefore (CreateFragmentReader (xmlFragments));
1127 public virtual void InsertBefore (XmlReader reader)
1129 using (XmlWriter w = InsertBefore ()) {
1130 w.WriteNode (reader, false);
1135 public virtual void InsertBefore (XPathNavigator nav)
1137 InsertBefore (new XPathNavigatorReader (nav));
1140 public virtual void InsertElementAfter (string prefix,
1141 string localName, string namespaceURI, string value)
1143 using (XmlWriter w = InsertAfter ()) {
1144 w.WriteElementString (prefix, localName, namespaceURI, value);
1148 public virtual void InsertElementBefore (string prefix,
1149 string localName, string namespaceURI, string value)
1151 using (XmlWriter w = InsertBefore ()) {
1152 w.WriteElementString (prefix, localName, namespaceURI, value);
1156 public virtual XmlWriter PrependChild ()
1158 XPathNavigator nav = Clone ();
1159 if (nav.MoveToFirstChild ())
1160 return nav.InsertBefore ();
1162 return AppendChild ();
1165 public virtual void PrependChild (string xmlFragments)
1167 PrependChild (CreateFragmentReader (xmlFragments));
1170 public virtual void PrependChild (XmlReader reader)
1172 using (XmlWriter w = PrependChild ()) {
1173 w.WriteNode (reader, false);
1178 public virtual void PrependChild (XPathNavigator nav)
1180 PrependChild (new XPathNavigatorReader (nav));
1183 public virtual void PrependChildElement (string prefix,
1184 string localName, string namespaceURI, string value)
1186 using (XmlWriter w = PrependChild ()) {
1187 w.WriteElementString (prefix, localName, namespaceURI, value);
1191 public virtual void ReplaceSelf (string xmlFragment)
1193 ReplaceSelf (CreateFragmentReader (xmlFragment));
1196 // must override it.
1197 public virtual void ReplaceSelf (XmlReader reader)
1199 throw new NotSupportedException ();
1203 public virtual void ReplaceSelf (XPathNavigator navigator)
1205 ReplaceSelf (new XPathNavigatorReader (navigator));
1208 // Dunno the exact purpose, but maybe internal editor use
1210 public virtual void SetTypedValue (object value)
1212 throw new NotSupportedException ();
1215 public virtual void SetValue (string value)
1217 throw new NotSupportedException ();
1221 private void DeleteChildren ()
1224 case XPathNodeType.Namespace:
1225 throw new InvalidOperationException ("Removing namespace node content is not supported.");
1226 case XPathNodeType.Attribute:
1228 case XPathNodeType.Text:
1229 case XPathNodeType.SignificantWhitespace:
1230 case XPathNodeType.Whitespace:
1231 case XPathNodeType.ProcessingInstruction:
1232 case XPathNodeType.Comment:
1238 XPathNavigator nav = Clone ();
1239 nav.MoveToFirstChild ();
1240 while (!nav.IsSamePosition (this))