source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Common/DataRectConverter.cs @ 13792

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.ComponentModel;
using System.Globalization;

namespace Microsoft.Research.DynamicDataDisplay.Common
{
  public sealed class DataRectConverter : TypeConverter
  {
    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 == null)
      {
        throw base.GetConvertFromException(value);
      }

      string source = value as string;
      if (source != null)
      {
        return DataRect.Parse(source);
      }

      return base.ConvertFrom(context, culture, value);
    }

    public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
    {
      if (destinationType != null && value is DataRect)
      {
        DataRect rect = (DataRect)value;
        if (destinationType == typeof(string))
        {
          return rect.ConvertToString(null, culture);
        }
      }
      return base.ConvertTo(context, culture, value, destinationType);
    }
  }
}