// Copyright (c) 2023- schick Informatik
// Description: Simple converter to check if a numeric value is greater than a specific value. This can
//              be used by datatriggers in XAML
//

using System;
using System.Collections;
using System.Globalization;
using System.Windows.Data;
using System.Windows.Markup;

namespace ENI2.Util
{
    public class CutoffConverter : MarkupExtension, IValueConverter
    {

        #region MarkupExtension implementation

        private static CutoffConverter _converter = null;
        public override object ProvideValue(IServiceProvider serviceProvider)
        {
            if (_converter == null)
            {
                _converter = new CutoffConverter();
            }
            return _converter;
        }

        #endregion

        #region IValueConverter implementation

        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value is ICollection collection)
                return collection.Count > Cutoff;
            return ((int)value) > Cutoff;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }

        #endregion

        public int Cutoff { get; set; }
    }
}