138 lines
4.5 KiB
C#
138 lines
4.5 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="XmlText.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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// <owner current="true" primary="true">Microsoft</owner>
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//------------------------------------------------------------------------------
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namespace System.Xml
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{
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using System;
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using System.Text;
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using System.Diagnostics;
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using System.Xml.XPath;
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// Represents the text content of an element or attribute.
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public class XmlText : XmlCharacterData {
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internal XmlText( string strData ): this( strData, null ) {
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}
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protected internal XmlText( string strData, XmlDocument doc ): base( strData, doc ) {
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}
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// Gets the name of the node.
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public override String Name {
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get {
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return OwnerDocument.strTextName;
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}
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}
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// Gets the name of the current node without the namespace prefix.
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public override String LocalName {
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get {
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return OwnerDocument.strTextName;
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}
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}
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// Gets the type of the current node.
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public override XmlNodeType NodeType {
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get {
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return XmlNodeType.Text;
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}
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}
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public override XmlNode ParentNode {
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get {
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switch (parentNode.NodeType) {
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case XmlNodeType.Document:
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return null;
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case XmlNodeType.Text:
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case XmlNodeType.CDATA:
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case XmlNodeType.Whitespace:
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case XmlNodeType.SignificantWhitespace:
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XmlNode parent = parentNode.parentNode;
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while (parent.IsText) {
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parent = parent.parentNode;
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}
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return parent;
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default:
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return parentNode;
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}
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}
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}
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// Creates a duplicate of this node.
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public override XmlNode CloneNode(bool deep) {
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Debug.Assert( OwnerDocument != null );
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return OwnerDocument.CreateTextNode( Data );
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}
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public override String Value {
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get {
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return Data;
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}
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set {
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Data = value;
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XmlNode parent = parentNode;
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if ( parent != null && parent.NodeType == XmlNodeType.Attribute ) {
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XmlUnspecifiedAttribute attr = parent as XmlUnspecifiedAttribute;
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if ( attr != null && !attr.Specified ) {
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attr.SetSpecified( true );
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}
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}
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}
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}
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// Splits the node into two nodes at the specified offset, keeping
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// both in the tree as siblings.
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public virtual XmlText SplitText(int offset) {
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XmlNode parentNode = this.ParentNode;
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int length = this.Length;
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if( offset > length )
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throw new ArgumentOutOfRangeException( "offset" );
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//if the text node is out of the living tree, throw exception.
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if ( parentNode == null )
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throw new InvalidOperationException(Res.GetString(Res.Xdom_TextNode_SplitText));
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int count = length - offset;
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String splitData = Substring(offset, count);
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DeleteData(offset, count);
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XmlText newTextNode = OwnerDocument.CreateTextNode(splitData);
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parentNode.InsertAfter(newTextNode, this);
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return newTextNode;
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}
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// Saves the node to the specified XmlWriter.
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public override void WriteTo(XmlWriter w) {
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w.WriteString(Data);
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}
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// Saves all the children of the node to the specified XmlWriter.
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public override void WriteContentTo(XmlWriter w) {
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// Intentionally do nothing
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}
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internal override XPathNodeType XPNodeType {
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get {
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return XPathNodeType.Text;
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}
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}
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internal override bool IsText {
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get {
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return true;
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}
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}
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public override XmlNode PreviousText {
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get {
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if (parentNode.IsText) {
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return parentNode;
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}
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return null;
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}
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}
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}
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}
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