// ------------------------------------------------------------------------------
// Copyright 2014 Microsoft Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------------

using System;
using Windows.UI.Xaml.Data;

namespace PhotoSkyCSharp.Common
{
    /// <summary>
    /// Value converter that translates true to false and vice versa.
    /// </summary>
    public sealed class BooleanNegationConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, string language)
        {
            return !(value is bool && (bool)value);
        }

        public object ConvertBack(object value, Type targetType, object parameter, string language)
        {
            return !(value is bool && (bool)value);
        }
    }
}
