/// Version 1.0.0
/// Last modified 24.5.2014
///
/// Copyright (C) 2014 Atte Söderlund
///
/// Halyri-system is a prototype emergency call system. Its purpose is to
/// demonstrate the use of the advanced capabilities available in the current
/// generation smartphones in facilitating the emergency service dispatcher's
/// capability to determine the nature of the emergency and to dispatch help.
///
/// For more information, see the README file of this package.
///
/// The MIT License (MIT)
///
/// 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.
///

using System;
using System.Diagnostics;
using System.Globalization;
using System.Windows.Data;

namespace Hake_WPF.Conversion
{
    /// <author>Atte Söderlund</author>
    /// <summary>
    /// The class converts bool to string. True is 'on' and false is 'ei'.
    /// </summary>
    [ValueConversion(typeof(bool), typeof(String))]
    class BoolConverter : IValueConverter
    {
        /// <summary>
        ///  The function converts bool to string.
        /// </summary>
        /// <param name="value">Bool that needs converting to string.</param>
        /// <param name="targetType">Not in use. Specifies target type.</param>
        /// <param name="parameter">Not in use. Converting parameters.</param>
        /// <param name="culture">Not in use. Culture info to be used in the conversion.</param>
        /// <returns>Bool as String.</returns>
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            bool boolean;
            try
            {
                boolean = (bool)value;
                return (boolean)? "On":"Ei";
            }
            catch (Exception e)
            {
                Debug.WriteLine("Cannot cast value to bool on converter: " + e.Message);
            }
            return null;
        }

        /// <summary>
        /// The function converts String to bool.
        /// </summary>
        /// <param name="value">"true" or "false" strings.</param>
        /// <param name="targetType">Not in use. Specifies target type.</param>
        /// <param name="parameter">Not in use. Converting parameters.</param>
        /// <param name="culture">Not in use. Culture info to be used in the conversion.</param>
        /// <returns>Bool whether can parse it from string or not.</returns>
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            return Boolean.Parse((String)value);
        }
    }
}