static public IList <Occurrence> GetOccurrences(IRecurrable recurrable, IDateTime periodStart, IDateTime periodEnd, bool includeReferenceDateInResults)
{
List <Occurrence> occurrences = new List <Occurrence>();
IEvaluator evaluator = recurrable.GetService(typeof(IEvaluator)) as IEvaluator;
if (evaluator != null)
{
// Change the time zone of periodStart/periodEnd as needed
// so they can be used during the evaluation process.
periodStart = DateUtil.MatchTimeZone(recurrable.Start, periodStart);
periodEnd = DateUtil.MatchTimeZone(recurrable.Start, periodEnd);
IList <IPeriod> periods = evaluator.Evaluate(
recurrable.Start,
DateUtil.GetSimpleDateTimeData(periodStart),
DateUtil.GetSimpleDateTimeData(periodEnd),
includeReferenceDateInResults);
foreach (IPeriod p in periods)
{
// Filter the resulting periods to only contain those
// that occur sometime between startTime and endTime.
// NOTE: fixes bug #3007244 - GetOccurences not returning long spanning all-day events
IDateTime endTime = p.EndTime ?? p.StartTime;
if (endTime.GreaterThan(periodStart) && p.StartTime.LessThanOrEqual(periodEnd))
{
occurrences.Add(new Occurrence(recurrable, p));
}
}
occurrences.Sort();
}
return(occurrences);
}