/
CommaDelimitedStringCollection.cs
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/
CommaDelimitedStringCollection.cs
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//
// System.Configuration.CommaDelimitedStringCollection.cs
//
// Authors:
// Chris Toshok (toshok@ximian.com)
//
// 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.
//
// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
//
#if NET_2_0
using System;
using System.Collections.Specialized;
namespace System.Configuration {
/* i really hate all these "new"s... maybe
* StringCollection marks these methods as virtual in
* 2.0? */
public sealed class CommaDelimitedStringCollection : StringCollection {
bool modified;
bool readOnly;
int originalStringHash = 0;
public bool IsModified {
get {
if (modified)
return true;
string str = ToString ();
if (str == null)
return false;
return str.GetHashCode () != originalStringHash;
}
}
public new bool IsReadOnly {
get { return readOnly; }
}
public new string this [int index] {
get { return base [index]; }
set {
if (readOnly) throw new ConfigurationErrorsException ("The configuration is read only");
base [index] = value;
modified = true;
}
}
public new void Add (string value)
{
if (readOnly) throw new ConfigurationErrorsException ("The configuration is read only");
base.Add (value);
modified = true;
}
public new void AddRange (string[] range)
{
if (readOnly) throw new ConfigurationErrorsException ("The configuration is read only");
base.AddRange (range);
modified = true;
}
public new void Clear ()
{
if (readOnly) throw new ConfigurationErrorsException ("The configuration is read only");
base.Clear ();
modified = true;
}
public CommaDelimitedStringCollection Clone ()
{
CommaDelimitedStringCollection col = new CommaDelimitedStringCollection();
string[] contents = new string[this.Count];
CopyTo (contents, 0);
col.AddRange (contents);
col.originalStringHash = originalStringHash;
return col;
}
public new void Insert (int index, string value)
{
if (readOnly) throw new ConfigurationErrorsException ("The configuration is read only");
base.Insert (index, value);
modified = true;
}
public new void Remove (string value)
{
if (readOnly) throw new ConfigurationErrorsException ("The configuration is read only");
base.Remove (value);
modified = true;
}
public void SetReadOnly ()
{
readOnly = true;
}
public override string ToString ()
{
if (this.Count == 0)
return null;
string[] contents = new string[this.Count];
CopyTo (contents, 0);
return String.Join (",", contents);
}
internal void UpdateStringHash ()
{
string str = ToString ();
if (str == null)
originalStringHash = 0;
else
originalStringHash = str.GetHashCode ();
}
}
}
#endif