/// <summary>
/// "Flattens" component recurrences that occur in the given date into a series of equivalent objects.
/// </summary>
/// <param name="dt">The date on which the event recurs</param>
/// <returns>A list of <see cref="Event"/>s if they could be flattened, null otherwise.</returns>
virtual public IEnumerable <RecurringComponent> FlattenRecurrencesOn(Date_Time dt)
{
// Create a dummy iCalendar to hold our flattened component
iCalendar iCal = new iCalendar();
if (Start.TZID != null)
{
// Place the time zone into our dummy iCalendar
DDay.iCal.Components.TimeZone tz = iCalendar.GetTimeZone(Start.TZID);
if (tz != null)
{
tz.Copy(iCal);
}
}
// Iterate through each period to find all occurrences on this date
foreach (Period p in Periods)
{
// Check to see if this occurrence is on the same date
if (p.StartTime.Date.Equals(dt.Date))
{
// Copy the component into the dummy iCalendar
RecurringComponent rc = (RecurringComponent)Copy(iCal);
rc.Start = p.StartTime.Copy();
rc.RRule = new Recur[0];
rc.RDate = new RDate[0];
rc.ExRule = new Recur[0];
rc.ExDate = new RDate[0];
yield return(rc);
}
}
}
/// <summary>
/// "Flattens" component recurrences into a series of equivalent objects.
/// </summary>
/// <returns>A list of <see cref="Event"/>s if they could be flattened, null otherwise.</returns>
virtual public IEnumerable <RecurringComponent> FlattenRecurrences()
{
// Create a dummy iCalendar to hold our flattened component
iCalendar iCal = new iCalendar();
if (Start.TZID != null)
{
// Place the time zone into our dummy iCalendar
DDay.iCal.Components.TimeZone tz = iCalendar.GetTimeZone(Start.TZID);
if (tz != null)
{
tz.Copy(iCal);
}
}
// Iterate through each period to find all occurrences on this date
foreach (Period p in Periods)
{
yield return(FlattenInstance(iCal, p));
}
}