90 lines
2.9 KiB
C#
90 lines
2.9 KiB
C#
// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// Copyright (c) 2004 Novell, Inc.
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//
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// Authors:
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// Jackson Harper (jackson@ximian.com)
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using System;
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using System.Drawing;
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using System.Collections;
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using System.ComponentModel;
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namespace System.Windows.Forms {
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public class TreeViewImageIndexConverter : ImageIndexConverter {
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public TreeViewImageIndexConverter ()
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{
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}
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#region Protected Properties
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protected override bool IncludeNoneAsStandardValue {
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get { return false; }
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}
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#endregion
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#region Public Methods
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public override object ConvertFrom (System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value)
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{
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string indexStr;
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if (value != null && value is string) {
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indexStr = (string)value;
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if (indexStr.Equals ("(default)", StringComparison.InvariantCultureIgnoreCase))
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return -1;
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else if (indexStr.Equals ("(none)", StringComparison.InvariantCultureIgnoreCase))
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return -2;
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return Int32.Parse (indexStr);
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} else
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return base.ConvertFrom (context, culture, value);
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}
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public override object ConvertTo (System.ComponentModel.ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType)
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{
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if (destinationType == typeof (string)) {
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if (value == null)
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return string.Empty;
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else if (value is int && (int)value == -1)
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return "(default)";
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else if (value is int && (int)value == -2)
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return "(none)";
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else if (value is string && ((string)value).Length == 0)
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return string.Empty;
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else
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return value.ToString ();
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} else
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return base.ConvertTo (context, culture, value, destinationType);
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}
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public override StandardValuesCollection GetStandardValues (System.ComponentModel.ITypeDescriptorContext context)
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{
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int[] stdVal = new int[] { -1, -2 };
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return new TypeConverter.StandardValuesCollection (stdVal);
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}
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#endregion
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}
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}
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