|
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
namespace Microsoft.Xml
{
using System;
using System.Text;
using System.Diagnostics;
using Microsoft.Xml.XPath;
// Represents the text content of an element or attribute.
public class XmlText : XmlCharacterData
{
internal XmlText(string strData) : this(strData, null)
{
}
protected internal XmlText(string strData, XmlDocument doc) : base(strData, doc)
{
}
// Gets the name of the node.
public override String Name
{
get
{
return OwnerDocument.strTextName;
}
}
// Gets the name of the current node without the namespace prefix.
public override String LocalName
{
get
{
return OwnerDocument.strTextName;
}
}
// Gets the type of the current node.
public override XmlNodeType NodeType
{
get
{
return XmlNodeType.Text;
}
}
public override XmlNode ParentNode
{
get
{
switch (parentNode.NodeType)
{
case XmlNodeType.Document:
return null;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
case XmlNodeType.Whitespace:
case XmlNodeType.SignificantWhitespace:
XmlNode parent = parentNode.parentNode;
while (parent.IsText)
{
parent = parent.parentNode;
}
return parent;
default:
return parentNode;
}
}
}
// Creates a duplicate of this node.
public override XmlNode CloneNode(bool deep)
{
Debug.Assert(OwnerDocument != null);
return OwnerDocument.CreateTextNode(Data);
}
public override String Value
{
get
{
return Data;
}
set
{
Data = value;
XmlNode parent = parentNode;
if (parent != null && parent.NodeType == XmlNodeType.Attribute)
{
XmlUnspecifiedAttribute attr = parent as XmlUnspecifiedAttribute;
if (attr != null && !attr.Specified)
{
attr.SetSpecified(true);
}
}
}
}
// Splits the node into two nodes at the specified offset, keeping
// both in the tree as siblings.
public virtual XmlText SplitText(int offset)
{
XmlNode parentNode = this.ParentNode;
int length = this.Length;
if (offset > length)
throw new ArgumentOutOfRangeException("offset");
//if the text node is out of the living tree, throw exception.
if (parentNode == null)
throw new InvalidOperationException(ResXml.Xdom_TextNode_SplitText);
int count = length - offset;
String splitData = Substring(offset, count);
DeleteData(offset, count);
XmlText newTextNode = OwnerDocument.CreateTextNode(splitData);
parentNode.InsertAfter(newTextNode, this);
return newTextNode;
}
// Saves the node to the specified XmlWriter.
public override void WriteTo(XmlWriter w)
{
w.WriteString(Data);
}
// Saves all the children of the node to the specified XmlWriter.
public override void WriteContentTo(XmlWriter w)
{
// Intentionally do nothing
}
internal override XPathNodeType XPNodeType
{
get
{
return XPathNodeType.Text;
}
}
internal override bool IsText
{
get
{
return true;
}
}
public override XmlNode PreviousText
{
get
{
if (parentNode.IsText)
{
return parentNode;
}
return null;
}
}
}
}
|