source: branches/HeuristicLab.Problems.GrammaticalOptimization/DynamicDataDisplay/Charts/Axes/DateTime/Strategies/DelegateStrategy.cs @ 12503

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

namespace Microsoft.Research.DynamicDataDisplay.Charts.Axes.DateTime.Strategies
{
  public class DelegateDateTimeStrategy : DefaultDateTimeTicksStrategy
  {
    private readonly Func<TimeSpan, DifferenceIn?> function;
    public DelegateDateTimeStrategy(Func<TimeSpan, DifferenceIn?> function)
    {
      if (function == null)
        throw new ArgumentNullException("function");

      this.function = function;
    }

    public override DifferenceIn GetDifference(TimeSpan span)
    {
      DifferenceIn? customResult = function(span);

      DifferenceIn result = customResult.HasValue ?
        customResult.Value :
        base.GetDifference(span);

      return result;
    }
  }
}