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// 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) 2004 Novell, Inc.
//
// Authors:
// Jackson Harper (jackson@ximian.com)
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
namespace System.Windows.Forms {
public class TreeViewImageIndexConverter : ImageIndexConverter {
public TreeViewImageIndexConverter ()
{
}
#region Protected Properties
protected override bool IncludeNoneAsStandardValue {
get { return false; }
}
#endregion
#region Public Methods
public override object ConvertFrom (System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
{
string indexStr;
if (value != null && value is string) {
indexStr = (string)value;
if (indexStr.Equals ("(default)", StringComparison.InvariantCultureIgnoreCase))
return -1;
else if (indexStr.Equals ("(none)", StringComparison.InvariantCultureIgnoreCase))
return -2;
return Int32.Parse (indexStr);
} else
return base.ConvertFrom (context, culture, value);
}
public override object ConvertTo (System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
{
if (destinationType == typeof (string)) {
if (value == null)
return string.Empty;
else if (value is int && (int)value == -1)
return "(default)";
else if (value is int && (int)value == -2)
return "(none)";
else if (value is string && ((string)value).Length == 0)
return string.Empty;
else
return value.ToString ();
} else
return base.ConvertTo (context, culture, value, destinationType);
}
public override StandardValuesCollection GetStandardValues (System.ComponentModel.ITypeDescriptorContext context)
{
int[] stdVal = new int[] { -1, -2 };
return new TypeConverter.StandardValuesCollection (stdVal);
}
#endregion
}
}
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