RecurrenceRule *Recurrence::defaultRRule( bool create ) const
{
if ( d->mRRules.isEmpty() ) {
if ( !create || d->mRecurReadOnly ) {
return 0;
}
RecurrenceRule *rrule = new RecurrenceRule();
rrule->setStartDt( startDateTime() );
const_cast<KCalCore::Recurrence*>( this )->addRRule( rrule );
return rrule;
} else {
return d->mRRules[0];
}
}
/******************************************************************************
* Return the date/time of the last recurrence.
*/
QDateTime KARecurrence::endDateTime() const
{
if(mFeb29Type == FEB29_FEB29 || duration() <= 1)
{
/* Either it doesn't have any special February 29th treatment,
* it's infinite (count = -1), the end date is specified
* (count = 0), or it ends on the start date (count = 1).
* So just use the normal KCal end date calculation.
*/
return Recurrence::endDateTime();
}
/* Create a temporary recurrence rule to find the end date.
* In a standard KCal recurrence, the 29th February only occurs once every
* 4 years. So shift the temporary recurrence date to the 28th to ensure
* that it occurs every year, thus giving the correct occurrence count.
*/
RecurrenceRule *rrule = new RecurrenceRule();
rrule->setRecurrenceType(RecurrenceRule::rYearly);
QDateTime dt = startDateTime();
QDate d = dt.date();
switch(d.day())
{
case 29:
// The start date is definitely a recurrence date, so shift
// start date to the temporary recurrence date of the 28th
d.setYMD(d.year(), d.month(), 28);
break;
case 28:
if(d.month() != 2 || mFeb29Type != FEB29_FEB28 || QDate::leapYear(d.year()))
{
// Start date is not a recurrence date, so shift it to 27th
d.setYMD(d.year(), d.month(), 27);
}
break;
case 1:
if(d.month() == 3 && mFeb29Type == FEB29_MAR1 && !QDate::leapYear(d.year()))
{
// Start date is a March 1st recurrence date, so shift
// start date to the temporary recurrence date of the 28th
d.setYMD(d.year(), 2, 28);
}
break;
default:
break;
}
dt.setDate(d);
rrule->setStartDt(dt);
rrule->setFloats(doesFloat());
rrule->setFrequency(frequency());
rrule->setDuration(duration());
QValueList<int> ds;
ds.append(28);
rrule->setByMonthDays(ds);
rrule->setByMonths(defaultRRuleConst()->byMonths());
dt = rrule->endDt();
delete rrule;
// We've found the end date for a recurrence on the 28th. Unless that date
// is a real February 28th recurrence, adjust to the actual recurrence date.
if(mFeb29Type == FEB29_FEB28 && dt.date().month() == 2 && !QDate::leapYear(dt.date().year()))
return dt;
return dt.addDays(1);
}
