using System;
using System.Windows.Data;

namespace DTS.Common.Converters
{

    /// <summary>
    /// Represents the converter that converts Boolean values to Opacity value.
    /// Use the BooleanToOpacityConverter class to convert a Boolean to Opacity value to provide visual feedback to the user if control enable or disable. 
    /// </summary>
    public class BooleanToOpacityConverter : IValueConverter
    {
        /// <summary>
        /// Converts a Boolean value to a Opacity to show user control enable/disable.
        /// </summary>
        /// <param name="value">The Boolean value to convert. This value can be a standard Boolean value or a nullable Boolean value.</param>
        /// <param name="targetType">This parameter is not used.</param>
        /// <param name="parameter">The converter parameter to use.</param>
        /// <param name="culture">This parameter is not used.</param>
        /// <returns>The value to be passed to the target dependency property.</returns>
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {

            if (value != null && (bool)value)
                return 0.5;
            return 1;
        }


        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return null;
        }
    }
}