namespace IndexFormula.Finance
{
    using System;
    using System.ComponentModel;
    using System.Globalization;

    public class TimePeriodsConverter : ArrayConverter
    {
        public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
        {
            return ((sourceType == typeof(string)) || base.CanConvertFrom(context, sourceType));
        }

        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
        {
            return ((destinationType == typeof(string)) || base.CanConvertTo(context, destinationType));
        }

        public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
        {
            if (value is string)
            {
                string[] strArray = (value as string).Split(new char[] { ',' });
                if (strArray.Length > 0)
                {
                    TimePeriod[] periodArray = new TimePeriod[strArray.Length];
                    TypeConverter converter = TypeDescriptor.GetConverter(typeof(TimePeriod));
                    for (int i = 0; i < strArray.Length; i++)
                    {
                        periodArray[i] = (TimePeriod) converter.ConvertFromString(strArray[i]);
                    }
                    return periodArray;
                }
            }
            return base.ConvertFrom(context, culture, value);
        }

        public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
        {
            if ((destinationType == typeof(string)) && (value is TimePeriod[]))
            {
                string str = "";
                foreach (TimePeriod period in value as TimePeriod[])
                {
                    if (str != "")
                    {
                        str = str + ",";
                    }
                    str = str + period.ToString();
                }
                return str;
            }
            return base.ConvertTo(context, culture, value, destinationType);
        }
    }
}