//
// System.Xml.XmlCharacterData.cs
//
// Authors:
// Jason Diamond <jason@injektilo.org>
// Kral Ferch <kral_ferch@hotmail.com>
//
// (C) 2002 Jason Diamond, Kral Ferch
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Xml.XPath;
namespace System.Xml{
public abstract class XmlCharacterData : XmlLinkedNode
{
private string data;
#region Constructor
protected internal XmlCharacterData (string data, XmlDocument doc)
: base (doc)
{
if (data == null)
data = String.Empty;
this.data = data;
}
#endregion
#region Properties
public virtual string Data {
get { return data; }
set {
string old = data;
OwnerDocument.onNodeChanging (this, this.ParentNode, old, value);
data = value;
OwnerDocument.onNodeChanged (this, this.ParentNode, old, value);
}
}
public override string InnerText {
get { return data; }
set { Data = value; } // invokes events
}
public virtual int Length {
get { return data != null ? data.Length : 0; }
}
public override string Value {
get { return data; }
set {
Data = value;
}
}
internal override XPathNodeType XPathNodeType {
get { return XPathNodeType.Text; }
}
#endregion
#region Methods
public virtual void AppendData (string strData)
{
string oldData = data;
string newData = data += strData;
OwnerDocument.onNodeChanging (this, this.ParentNode, oldData, newData);
data = newData;
OwnerDocument.onNodeChanged (this, this.ParentNode, oldData, newData);
}
public virtual void DeleteData (int offset, int count)
{
if (offset < 0)
throw new ArgumentOutOfRangeException ("offset", "Must be non-negative and must not be greater than the length of this instance.");
int newCount = data.Length - offset;
if ((offset + count) < data.Length)
newCount = count;
string oldValue = data;
string newValue = data.Remove (offset, newCount);
OwnerDocument.onNodeChanging (this, this.ParentNode, oldValue, newValue);
data = newValue;
OwnerDocument.onNodeChanged (this, this.ParentNode, oldValue, newValue);
}
public virtual void InsertData (int offset, string strData)
{
if ((offset < 0) || (offset > data.Length))
throw new ArgumentOutOfRangeException ("offset", "Must be non-negative and must not be greater than the length of this instance.");
string oldData = data;
string newData = data.Insert(offset, strData);
OwnerDocument.onNodeChanging (this, this.ParentNode, oldData, newData);
data = newData;
OwnerDocument.onNodeChanged (this, this.ParentNode, oldData, newData);
}
public virtual void ReplaceData (int offset, int count, string strData)
{
if ((offset < 0) || (offset > data.Length))
throw new ArgumentOutOfRangeException ("offset", "Must be non-negative and must not be greater than the length of this instance.");
if (count < 0)
throw new ArgumentOutOfRangeException ("count", "Must be non-negative.");
if (strData == null)
throw new ArgumentNullException ("strData", "Must be non-null.");
string oldData = data;
string newData = data.Substring (0, offset) + strData;
if ((offset + count) < data.Length)
newData += data.Substring (offset + count);
OwnerDocument.onNodeChanging (this, this.ParentNode, oldData, newData);
data = newData;
OwnerDocument.onNodeChanged (this, this.ParentNode, oldData, newData);
}
public virtual string Substring (int offset, int count)
{
if (data.Length < offset + count)
return data.Substring (offset);
else
return data.Substring (offset, count);
}
#endregion
}
}
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