mirror of https://github.com/fadden/6502bench.git
41 lines
1.5 KiB
C#
41 lines
1.5 KiB
C#
/*
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* Copyright 2019 faddenSoft
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using System.Windows.Data;
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namespace CommonWPF {
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/// <summary>
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/// A value inverter for negating a boolean value (value --> !value).
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///
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/// See https://stackoverflow.com/questions/1039636/how-to-bind-inverse-boolean-properties-in-wpf
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/// </summary>
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[ValueConversion(typeof(bool), typeof(bool))]
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public class InverseBooleanConverter : IValueConverter {
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public object Convert(object value, Type targetType, object parameter,
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System.Globalization.CultureInfo culture) {
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if (targetType != typeof(bool))
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throw new InvalidOperationException("The target must be a boolean");
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return !(bool)value;
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}
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public object ConvertBack(object value, Type targetType, object parameter,
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System.Globalization.CultureInfo culture) {
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throw new NotSupportedException();
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}
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}
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}
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