Fixed some problems with the recurrence

1 files changed, 15 insertions, 2 deletions

diff --git a/libkcal/recurrence.cpp b/libkcal/recurrence.cpp
index 5fc5d1f..dd74e10 100644
--- a/libkcal/recurrence.cpp
+++ b/libkcal/recurrence.cpp
@@ -145,1096 +145,1109 @@ bool Recurrence::operator==( const Recurrence& r2 ) const
 /*
 bool  Recurrence::compareLists( const QPtrList<int> &l1 ,const QPtrList<int> &l2)
 {
     if ( l1.count() != l2.count() )
         return false;
     int count = l1.count();
     int i;
     for ( i = 0; i < count ; ++i ) {
         // if ( l1.at(i) != l2.at(i)   )
         return false;
         qDebug("compüare ");
     }
     return true;
 }
 */
 QString Recurrence::recurrenceText() const
 {
     QString recurText = i18n("No");
     if ( recurs == Recurrence::rMinutely  )
         recurText = i18n("minutely");
     else if ( recurs == Recurrence::rHourly  )
         recurText = i18n("hourly");
     else if ( recurs == Recurrence::rDaily  )
         recurText = i18n("daily");
     else if ( recurs ==  Recurrence::rWeekly ) 
         recurText = i18n("weekly");
     else if ( recurs == Recurrence::rMonthlyPos  )
         recurText = i18n("monthly");
     else if ( recurs ==  Recurrence::rMonthlyDay )
         recurText = i18n("day-monthly");
     else if ( recurs ==  Recurrence::rYearlyMonth )
         recurText = i18n("month-yearly");
     else if ( recurs ==  Recurrence::rYearlyDay )
         recurText = i18n("day-yearly");
     else if ( recurs ==  Recurrence::rYearlyPos )
         recurText = i18n("position-yearly");
     return recurText;
 }
 
 void Recurrence::setCompatVersion(int version)
 {
   mCompatVersion = version ? version : INT_MAX;
 }
 
 ushort Recurrence::doesRecur() const
 {
   return recurs;
 }
 
 bool Recurrence::recursOnPure(const QDate &qd) const
 {
   switch(recurs) {
     case rMinutely:
       return recursSecondly(qd, rFreq*60);
     case rHourly:
       return recursSecondly(qd, rFreq*3600);
     case rDaily:
       return recursDaily(qd);
     case rWeekly:
       return recursWeekly(qd);
     case rMonthlyPos:
     case rMonthlyDay:
       return recursMonthly(qd);
     case rYearlyMonth:
       return recursYearlyByMonth(qd);
     case rYearlyDay:
       return recursYearlyByDay(qd);
     case rYearlyPos:
       return recursYearlyByPos(qd);
     default:
         return false;
     case rNone:
       return false;
   } // case
   return false;
 }
 
 bool Recurrence::recursAtPure(const QDateTime &dt) const
 {
   switch(recurs) {
   case rMinutely:
     return recursMinutelyAt(dt, rFreq);
   case rHourly:
     return recursMinutelyAt(dt, rFreq*60);
   default:
     if (dt.time() != mRecurStart.time())
       return false;
     switch(recurs) {
       case rDaily:
         return recursDaily(dt.date());
       case rWeekly:
         return recursWeekly(dt.date());
       case rMonthlyPos:
       case rMonthlyDay:
         return recursMonthly(dt.date());
       case rYearlyMonth:
         return recursYearlyByMonth(dt.date());
       case rYearlyDay:
         return recursYearlyByDay(dt.date());
       case rYearlyPos:
         return recursYearlyByPos(dt.date());
       default:
           return false;
       case rNone:
         return false;
     }
   } // case
   return false;
 }
 
 QDate Recurrence::endDate() const
 {
   int count = 0;
   QDate end;
   if (recurs != rNone) {
     if (rDuration < 0)
       return QDate();    // infinite recurrence
     if (rDuration == 0)
       return rEndDateTime.date();
 
     // The end date is determined by the recurrence count
     QDate dStart = mRecurStart.date();
     switch (recurs)
     {
     case rMinutely:
       return mRecurStart.addSecs((rDuration-1+mRecurExDatesCount)*rFreq*60).date();
     case rHourly:
       return mRecurStart.addSecs((rDuration-1+mRecurExDatesCount)*rFreq*3600).date();
     case rDaily:
       return dStart.addDays((rDuration-1+mRecurExDatesCount)*rFreq);
 
     case rWeekly:
       count = weeklyCalc(END_DATE_AND_COUNT, end);
       break;
     case rMonthlyPos:
     case rMonthlyDay:
       count = monthlyCalc(END_DATE_AND_COUNT, end);
       break;
     case rYearlyMonth:
       count = yearlyMonthCalc(END_DATE_AND_COUNT, end);
       break;
     case rYearlyDay:
       count = yearlyDayCalc(END_DATE_AND_COUNT, end);
       break;
     case rYearlyPos:
       count = yearlyPosCalc(END_DATE_AND_COUNT, end);
       break;
     default:
       // catch-all.  Should never get here.
       kdDebug(5800) << "Control should never reach here in endDate()!" << endl;
       break;
     }
   }
   if (!count)
     return QDate();     // error - there is no recurrence
   return end;
 }
 
 QDateTime Recurrence::endDateTime() const
 {
   int count = 0;
   QDate end;
   if (recurs != rNone) {
     if (rDuration < 0)
       return QDateTime();    // infinite recurrence
     if (rDuration == 0)
       return rEndDateTime;
 
     // The end date is determined by the recurrence count
     QDate dStart = mRecurStart.date();
     switch (recurs)
     {
     case rMinutely:
       return mRecurStart.addSecs((rDuration-1+mRecurExDatesCount)*rFreq*60);
     case rHourly:
       return mRecurStart.addSecs((rDuration-1+mRecurExDatesCount)*rFreq*3600);
     case rDaily:
       return dStart.addDays((rDuration-1+mRecurExDatesCount)*rFreq);
 
     case rWeekly:
       count = weeklyCalc(END_DATE_AND_COUNT, end);
       break;
     case rMonthlyPos:
     case rMonthlyDay:
       count = monthlyCalc(END_DATE_AND_COUNT, end);
       break;
     case rYearlyMonth:
       count = yearlyMonthCalc(END_DATE_AND_COUNT, end);
       break;
     case rYearlyDay:
       count = yearlyDayCalc(END_DATE_AND_COUNT, end);
       break;
     case rYearlyPos:
       count = yearlyPosCalc(END_DATE_AND_COUNT, end);
       break;
     default:
       // catch-all.  Should never get here.
       kdDebug(5800) << "Control should never reach here in endDate()!" << endl;
       break;
     }
   }
   if (!count)
     return QDateTime();     // error - there is no recurrence
   return QDateTime(end, mRecurStart.time());
 }
 
 int Recurrence::durationTo(const QDate &date) const
 {
   QDate d = date;
   return recurCalc(COUNT_TO_DATE, d);
 }
 
 int Recurrence::durationTo(const QDateTime &datetime) const
 {
   QDateTime dt = datetime;
   return recurCalc(COUNT_TO_DATE, dt);
 }
 
 void Recurrence::unsetRecurs()
 {
   if (mRecurReadOnly) return;
   recurs = rNone;
   rMonthPositions.clear();
   rMonthDays.clear();
   rYearNums.clear();
 }
 
 void Recurrence::setRecurStart(const QDateTime &start)
 {
   mRecurStart = start;
   mFloats = false;
   switch (recurs)
   {
     case rMinutely:
     case rHourly:
       break;
     case rDaily:
     case rWeekly:
     case rMonthlyPos:
     case rMonthlyDay:
     case rYearlyMonth:
     case rYearlyDay:
     case rYearlyPos:
     default:
       rEndDateTime.setTime(start.time());
       break;
   }
 }
 
 void Recurrence::setRecurStart(const QDate &start)
 {
   mRecurStart.setDate(start);
   mRecurStart.setTime(QTime(0,0,0));
   switch (recurs)
   {
     case rMinutely:
     case rHourly:
       break;
     case rDaily:
     case rWeekly:
     case rMonthlyPos:
     case rMonthlyDay:
     case rYearlyMonth:
     case rYearlyDay:
     case rYearlyPos:
     default:
       mFloats = true;
       break;
   }
 }
 
 void Recurrence::setFloats(bool f)
 {
   switch (recurs)
   {
     case rDaily:
     case rWeekly:
     case rMonthlyPos:
     case rMonthlyDay:
     case rYearlyMonth:
     case rYearlyDay:
     case rYearlyPos:
       break;
     case rMinutely:
     case rHourly:
     default:
       return;     // can't set sub-daily to floating
   }
   mFloats = f;
   if (f) {
     mRecurStart.setTime(QTime(0,0,0));
     rEndDateTime.setTime(QTime(0,0,0));
   }
 }
 
 int Recurrence::frequency() const
 {
   return rFreq;
 }
 
 int Recurrence::duration() const
 {
   return rDuration;
 }
 
 void Recurrence::setDuration(int _rDuration)
 {
   if (mRecurReadOnly) return;
   if (_rDuration > 0) {
     rDuration = _rDuration;
     // Compatibility mode is only needed when reading the calendar in ICalFormatImpl,
     // so explicitly setting the duration means no backwards compatibility is needed.
     mCompatDuration = 0;
   }
 }
 
 QString Recurrence::endDateStr(bool shortfmt) const
 {
   return KGlobal::locale()->formatDate(rEndDateTime.date(),shortfmt);
 }
 
 const QBitArray &Recurrence::days() const
 {
   return rDays;
 }
 
 const QPtrList<Recurrence::rMonthPos> &Recurrence::monthPositions() const
 {
   return rMonthPositions;
 }
 
 const QPtrList<Recurrence::rMonthPos> &Recurrence::yearMonthPositions() const
 {
   return rMonthPositions;
 }
 
 const QPtrList<int> &Recurrence::monthDays() const
 {
   return rMonthDays;
 }
 
 void Recurrence::setMinutely(int _rFreq, int _rDuration)
 {
   if (mRecurReadOnly || _rDuration == 0 || _rDuration < -1)
     return;
   setDailySub(rMinutely, _rFreq, _rDuration);
 }
 
 void Recurrence::setMinutely(int _rFreq, const QDateTime &_rEndDateTime)
 {
   if (mRecurReadOnly) return;
   rEndDateTime = _rEndDateTime;
   setDailySub(rMinutely, _rFreq, 0);
 }
 
 void Recurrence::setHourly(int _rFreq, int _rDuration)
 {
   if (mRecurReadOnly || _rDuration == 0 || _rDuration < -1)
     return;
   setDailySub(rHourly, _rFreq, _rDuration);
 }
 
 void Recurrence::setHourly(int _rFreq, const QDateTime &_rEndDateTime)
 {
   if (mRecurReadOnly) return;
   rEndDateTime = _rEndDateTime;
   setDailySub(rHourly, _rFreq, 0);
 }
 
 void Recurrence::setDaily(int _rFreq, int _rDuration)
 {
   if (mRecurReadOnly || _rDuration == 0 || _rDuration < -1)
     return;
   setDailySub(rDaily, _rFreq, _rDuration);
 }
 
 void Recurrence::setDaily(int _rFreq, const QDate &_rEndDate)
 {
   if (mRecurReadOnly) return;
   rEndDateTime.setDate(_rEndDate);
   rEndDateTime.setTime(mRecurStart.time());
   setDailySub(rDaily, _rFreq, 0);
 }
 
 void Recurrence::setWeekly(int _rFreq, const QBitArray &_rDays,
                                int _rDuration, int _rWeekStart)
 {
   if (mRecurReadOnly || _rDuration == 0 || _rDuration < -1)
     return;
   recurs = rWeekly;
 
   rFreq = _rFreq;
   rDays = _rDays;
   rWeekStart = _rWeekStart;
   rDuration = _rDuration;
   if (mCompatVersion < 310 && _rDuration > 0) {
     // Backwards compatibility for KDE < 3.1.
     // rDuration was set to the number of time periods to recur,
     // with week start always on a Monday.
     // Convert this to the number of occurrences.
     mCompatDuration = _rDuration;
     int weeks = ((mCompatDuration-1+mRecurExDatesCount)*7) + (7 - mRecurStart.date().dayOfWeek());
     QDate end(mRecurStart.date().addDays(weeks * rFreq));
     rDuration = INT_MAX;    // ensure that weeklyCalc() does its job correctly
     rDuration = weeklyCalc(COUNT_TO_DATE, end);
   } else {
     mCompatDuration = 0;
   }
   rMonthPositions.clear();
   rMonthDays.clear();
   if (mParent) mParent->updated();
 }
 
 void Recurrence::setWeekly(int _rFreq, const QBitArray &_rDays,
                                const QDate &_rEndDate, int _rWeekStart)
 {
   if (mRecurReadOnly) return;
   recurs = rWeekly;
 
   rFreq = _rFreq;
   rDays = _rDays;
   rWeekStart = _rWeekStart;
   rEndDateTime.setDate(_rEndDate);
   rEndDateTime.setTime(mRecurStart.time());
   rDuration = 0; // set to 0 because there is an end date
   mCompatDuration = 0;
   rMonthPositions.clear();
   rMonthDays.clear();
   rYearNums.clear();
   if (mParent) mParent->updated();
 }
 
 void Recurrence::setMonthly(short type, int _rFreq, int _rDuration)
 {
   if (mRecurReadOnly || _rDuration == 0 || _rDuration < -1)
     return;
   recurs = type;
 
   rFreq = _rFreq;
   rDuration = _rDuration;
   if (mCompatVersion < 310)
     mCompatDuration = (_rDuration > 0) ? _rDuration : 0;
   rYearNums.clear();
   if (mParent) mParent->updated();
 }
 
 void Recurrence::setMonthly(short type, int _rFreq,
                             const QDate &_rEndDate)
 {
   if (mRecurReadOnly) return;
   recurs = type;
 
   rFreq = _rFreq;
   rEndDateTime.setDate(_rEndDate);
   rEndDateTime.setTime(mRecurStart.time());
   rDuration = 0; // set to 0 because there is an end date
   mCompatDuration = 0;
   rYearNums.clear();
   if (mParent) mParent->updated();
 }
 
 void Recurrence::addMonthlyPos(short _rPos, const QBitArray &_rDays)
 {
   if (recurs == rMonthlyPos)
     addMonthlyPos_(_rPos, _rDays);
 }
 
 void Recurrence::addMonthlyPos_(short _rPos, const QBitArray &_rDays)
 {
   if (mRecurReadOnly
   ||  _rPos == 0 || _rPos > 5 || _rPos < -5)    // invalid week number
     return;
 
   for (rMonthPos* it = rMonthPositions.first();  it;  it = rMonthPositions.next()) {
     int itPos = it->negative ? -it->rPos : it->rPos;
     if (_rPos == itPos) {
       // This week is already in the list.
       // Combine the specified days with those in the list.
       it->rDays |= _rDays;
       if (mParent) mParent->updated();
       return;
     }
   }
   // Add the new position to the list
   rMonthPos *tmpPos = new rMonthPos;
   if (_rPos > 0) {
     tmpPos->rPos = _rPos;
     tmpPos->negative = false;
   } else {
     tmpPos->rPos = -_rPos; // take abs()
     tmpPos->negative = true;
   }
   tmpPos->rDays = _rDays;
   tmpPos->rDays.detach();
   rMonthPositions.append(tmpPos);
 
   if (mCompatVersion < 310 && mCompatDuration > 0) {
     // Backwards compatibility for KDE < 3.1.
     // rDuration was set to the number of time periods to recur.
     // Convert this to the number of occurrences.
     int monthsAhead = (mCompatDuration-1+mRecurExDatesCount) * rFreq;
     int month = mRecurStart.date().month() - 1 + monthsAhead;
     QDate end(mRecurStart.date().year() + month/12, month%12 + 1, 31);
     rDuration = INT_MAX;    // ensure that recurCalc() does its job correctly
     rDuration = recurCalc(COUNT_TO_DATE, end);
   }
 
   if (mParent) mParent->updated();
 }
 
 void Recurrence::addMonthlyDay(short _rDay)
 {
-  if (mRecurReadOnly || recurs != rMonthlyDay
+  if (mRecurReadOnly || (recurs != rMonthlyDay && recurs != rYearlyMonth)
   ||  _rDay == 0 || _rDay > 31 || _rDay < -31)   // invalid day number
     return;
   for (int* it = rMonthDays.first();  it;  it = rMonthDays.next()) {
     if (_rDay == *it)
       return;        // this day is already in the list - avoid duplication
   }
   int *tmpDay = new int;
   *tmpDay = _rDay;
   rMonthDays.append(tmpDay);
 
   if (mCompatVersion < 310 && mCompatDuration > 0) {
     // Backwards compatibility for KDE < 3.1.
     // rDuration was set to the number of time periods to recur.
     // Convert this to the number of occurrences.
     int monthsAhead = (mCompatDuration-1+mRecurExDatesCount) * rFreq;
     int month = mRecurStart.date().month() - 1 + monthsAhead;
     QDate end(mRecurStart.date().year() + month/12, month%12 + 1, 31);
     rDuration = INT_MAX;    // ensure that recurCalc() does its job correctly
     rDuration = recurCalc(COUNT_TO_DATE, end);
   }
 
   if (mParent) mParent->updated();
 }
 
 void Recurrence::setYearly(int type, int _rFreq, int _rDuration)
 {
   if (mRecurReadOnly || _rDuration == 0 || _rDuration < -1)
     return;
   if (mCompatVersion < 310)
     mCompatDuration = (_rDuration > 0) ? _rDuration : 0;
   setYearly_(type, mFeb29YearlyDefaultType, _rFreq, _rDuration);
 }
 
 void Recurrence::setYearly(int type, int _rFreq, const QDate &_rEndDate)
 {
   if (mRecurReadOnly) return;
   rEndDateTime.setDate(_rEndDate);
   rEndDateTime.setTime(mRecurStart.time());
   mCompatDuration = 0;
   setYearly_(type, mFeb29YearlyDefaultType, _rFreq, 0);
 }
 
 void Recurrence::setYearlyByDate(Feb29Type type, int _rFreq, int _rDuration)
 {
   if (mRecurReadOnly || _rDuration == 0 || _rDuration < -1)
     return;
   if (mCompatVersion < 310)
     mCompatDuration = (_rDuration > 0) ? _rDuration : 0;
   setYearly_(rYearlyMonth, type, _rFreq, _rDuration);
 }
 
 void Recurrence::setYearlyByDate(Feb29Type type, int _rFreq, const QDate &_rEndDate)
 {
   if (mRecurReadOnly) return;
   rEndDateTime.setDate(_rEndDate);
   rEndDateTime.setTime(mRecurStart.time());
   mCompatDuration = 0;
   setYearly_(rYearlyMonth, type, _rFreq, 0);
 }
 
 void Recurrence::addYearlyMonthPos(short _rPos, const QBitArray &_rDays)
 {
   if (recurs == rYearlyPos)
     addMonthlyPos_(_rPos, _rDays);
 }
 
 const QPtrList<int> &Recurrence::yearNums() const
 {
   return rYearNums;
 }
-
+void Recurrence::addYearlyMonth(short _rPos )
+{ 
+    if (mRecurReadOnly  ||  recurs != rYearlyMonth)    // invalid day/month number
+    return;
+  rMonthPos *tmpPos = new rMonthPos;
+  if ( _rPos > 0) {
+    tmpPos->rPos = _rPos;
+    tmpPos->negative = false;
+  } else {
+    tmpPos->rPos = -_rPos; // take abs()
+    tmpPos->negative = true;
+  }
+  rMonthPositions.append(tmpPos);
+}
 void Recurrence::addYearlyNum(short _rNum)
 {
   if (mRecurReadOnly
   ||  (recurs != rYearlyMonth && recurs != rYearlyDay && recurs != rYearlyPos)
   ||  _rNum <= 0)    // invalid day/month number
     return;
 
   if (mCompatVersion < 310 && mCompatRecurs == rYearlyDay) {
     // Backwards compatibility for KDE < 3.1.
     // Dates were stored as day numbers, with a fiddle to take account of leap years.
     // Convert the day number to a month.
     if (_rNum <= 0 || _rNum > 366 || (_rNum == 366 && mRecurStart.date().daysInYear() < 366))
       return;     // invalid day number
     _rNum = QDate(mRecurStart.date().year(), 1, 1).addDays(_rNum - 1).month();
   } else
   if ((recurs == rYearlyMonth || recurs == rYearlyPos) && _rNum > 12
   ||  recurs == rYearlyDay && _rNum > 366)
     return;     // invalid day number
 
   uint i = 0;
   for (int* it = rYearNums.first();  it && _rNum >= *it;  it = rYearNums.next()) {
     if (_rNum == *it)
       return;        // this day/month is already in the list - avoid duplication
     ++i;
   }
 
   int *tmpNum = new int;
   *tmpNum = _rNum;
   rYearNums.insert(i, tmpNum);   // insert the day/month in a sorted position
 
   if (mCompatVersion < 310 && mCompatDuration > 0) {
     // Backwards compatibility for KDE < 3.1.
     // rDuration was set to the number of time periods to recur.
     // Convert this to the number of occurrences.
     QDate end(mRecurStart.date().year() + (mCompatDuration-1+mRecurExDatesCount)*rFreq, 12, 31);
     rDuration = INT_MAX;    // ensure that recurCalc() does its job correctly
     rDuration = recurCalc(COUNT_TO_DATE, end);
   }
 
   if (mParent) mParent->updated();
 }
 
 
 QDateTime Recurrence::getNextDateTime(const QDateTime &preDateTime, bool *last) const
 {  
     if (last)
         *last = false;
   int freq;
   switch (recurs)
   {
     case rMinutely:
       freq = rFreq * 60;
       break;
     case rHourly:
       freq = rFreq * 3600;
       break;
     case rDaily:
     case rWeekly:
     case rMonthlyPos:
     case rMonthlyDay:
     case rYearlyMonth:
     case rYearlyDay:
     case rYearlyPos: {
       QDate preDate = preDateTime.date();
       if (!mFloats && mRecurStart.time() > preDateTime.time())
         preDate = preDate.addDays(-1);
       return QDateTime(getNextDateNoTime(preDate, last), mRecurStart.time());
     }
     default:
       return QDateTime();
   }
 
   // It's a sub-daily recurrence
   if (preDateTime < mRecurStart)
     return mRecurStart;
   int count = mRecurStart.secsTo(preDateTime) / freq + 2;
   if (rDuration > 0) {
     if (count > rDuration)
       return QDateTime();
     if (last && count == rDuration)
       *last = true;
   }
   QDateTime endtime = mRecurStart.addSecs((count - 1)*freq);
   if (rDuration == 0) {
     if (endtime > rEndDateTime)
       return QDateTime();
     if (last && endtime == rEndDateTime)
       *last = true;
   }
   return endtime;
 }
 
 QDate Recurrence::getNextDate(const QDate &preDate, bool *last) const
 { 
     if (last)
         *last = false;
     switch (recurs)
   {
     case rMinutely:
     case rHourly:
       return getNextDateTime(QDateTime(preDate, QTime(23,59,59)), last).date();
     case rDaily:
     case rWeekly:
     case rMonthlyPos:
     case rMonthlyDay:
     case rYearlyMonth:
     case rYearlyDay:
     case rYearlyPos:
       return getNextDateNoTime(preDate, last);
     default:
       return QDate();
   }
 }
 
 
 QDateTime Recurrence::getPreviousDateTime(const QDateTime &afterDateTime, bool *last) const
 {
     if (last)
         *last = false;
   int freq;
   switch (recurs)
   {
     case rMinutely:
       freq = rFreq * 60;
       break;
     case rHourly:
       freq = rFreq * 3600;
       break;
     case rDaily:
     case rWeekly:
     case rMonthlyPos:
     case rMonthlyDay:
     case rYearlyMonth:
     case rYearlyDay:
     case rYearlyPos: {
       QDate afterDate = afterDateTime.date();
       if (!mFloats && mRecurStart.time() < afterDateTime.time())
         afterDate = afterDate.addDays(1);
       return QDateTime(getPreviousDateNoTime(afterDate, last), mRecurStart.time());
     }
     default:
       return QDateTime();
   }
 
   // It's a sub-daily recurrence
   if (afterDateTime <= mRecurStart)
     return QDateTime();
   int count = (mRecurStart.secsTo(afterDateTime) - 1) / freq + 1;
   if (rDuration > 0) {
     if (count > rDuration)
       count = rDuration;
     if (last && count == rDuration)
       *last = true;
   }
   QDateTime endtime = mRecurStart.addSecs((count - 1)*freq);
   if (rDuration == 0) {
     if (endtime > rEndDateTime)
       endtime = rEndDateTime;
     if (last && endtime == rEndDateTime)
       *last = true;
   }
   return endtime;
 }
 
 QDate Recurrence::getPreviousDate(const QDate &afterDate, bool *last) const
 {
   if (last)
         *last = false;
   switch (recurs)
   {
     case rMinutely:
     case rHourly:
       return getPreviousDateTime(QDateTime(afterDate, QTime(0,0,0)), last).date();
     case rDaily:
     case rWeekly:
     case rMonthlyPos:
     case rMonthlyDay:
     case rYearlyMonth:
     case rYearlyDay:
     case rYearlyPos:
       return getPreviousDateNoTime(afterDate, last);
     default:
       return QDate();
   }
 }
 
 
 /***************************** PROTECTED FUNCTIONS ***************************/
 
 bool Recurrence::recursSecondly(const QDate &qd, int secondFreq) const
 {
   if ((qd >= mRecurStart.date()) &&
       ((rDuration > 0) && (qd <= endDate()) ||
        ((rDuration == 0) && (qd <= rEndDateTime.date())) ||
        (rDuration == -1))) {
     // The date queried falls within the range of the event.
     if (secondFreq < 24*3600)
       return true;      // the event recurs at least once each day
     int after = mRecurStart.secsTo(QDateTime(qd));
     if (after / secondFreq != (after + 24*3600) / secondFreq)
       return true;
   }
   return false;
 }
 
 bool Recurrence::recursMinutelyAt(const QDateTime &dt, int minuteFreq) const
 {
   if ((dt >= mRecurStart) &&
       ((rDuration > 0) && (dt <= endDateTime()) ||
        ((rDuration == 0) && (dt <= rEndDateTime)) ||
        (rDuration == -1))) {
     // The time queried falls within the range of the event.
     if (((mRecurStart.secsTo(dt) / 60) % minuteFreq) == 0)
       return true;
   }
   return false;
 }
 
 bool Recurrence::recursDaily(const QDate &qd) const
 {
   QDate dStart = mRecurStart.date();
   if ((dStart.daysTo(qd) % rFreq) == 0) {
     // The date is a day which recurs
     if (qd >= dStart
     &&  ((rDuration > 0 && qd <= endDate()) ||
          (rDuration == 0 && qd <= rEndDateTime.date()) ||
          rDuration == -1)) {
       // The date queried falls within the range of the event.
       return true;
     }
   }
   return false;
 }
 
 bool Recurrence::recursWeekly(const QDate &qd) const
 {
   QDate dStart = mRecurStart.date();
   if ((dStart.daysTo(qd)/7) % rFreq == 0) {
     // The date is in a week which recurs
     if (qd >= dStart
     && ((rDuration > 0 && qd <= endDate()) ||
         (rDuration == 0 && qd <= rEndDateTime.date()) ||
         rDuration == -1)) {
       // The date queried falls within the range of the event.
       // check if the bits set match today.
       int i = qd.dayOfWeek()-1;
       if (rDays.testBit((uint) i))
         return true;
     }
   }
   return false;
 }
 
 bool Recurrence::recursMonthly(const QDate &qd) const
 {
   QDate dStart = mRecurStart.date();
   int year  = qd.year();
   int month = qd.month();
   int day   = qd.day();
   // calculate how many months ahead this date is from the original
   // event's date
   int monthsAhead = (year - dStart.year()) * 12 + (month - dStart.month());
   if ((monthsAhead % rFreq) == 0) {
     // The date is in a month which recurs
     if (qd >= dStart
     &&  ((rDuration > 0 && qd <= endDate()) ||
          (rDuration == 0 && qd <= rEndDateTime.date()) ||
          rDuration == -1)) {
       // The date queried falls within the range of the event.
       QValueList<int> days;
       int daysInMonth = qd.daysInMonth();
       if (recurs == rMonthlyDay)
         getMonthlyDayDays(days, daysInMonth);
       else if (recurs == rMonthlyPos)
         getMonthlyPosDays(days, daysInMonth, QDate(year, month, 1).dayOfWeek());
       for (QValueList<int>::Iterator it = days.begin();  it != days.end();  ++it) {
         if (*it == day)
           return true;
       }
       // no dates matched
     }
   }
   return false;
 }
 
 bool Recurrence::recursYearlyByMonth(const QDate &qd) const
 {
   QDate dStart = mRecurStart.date();
   int startDay = dStart.day();
   int qday     = qd.day();
   int qmonth   = qd.month();
   int qyear    = qd.year();
   bool match = (qday == startDay);
   if (!match && startDay == 29 && dStart.month() == 2) {
     // It's a recurrence on February 29th
     switch (mFeb29YearlyType) {
       case rFeb28:
         if (qday == 28 && qmonth == 2 && !QDate::leapYear(qyear))
           match = true;
         break;
       case rMar1:
         if (qday == 1 && qmonth == 3 && !QDate::leapYear(qyear)) {
           qmonth = 2;
           match = true;
         }
         break;
       case rFeb29:
         break;
     }
   }
 
   if (match) {
     // The day of the month matches. Calculate how many years ahead
     // this date is from the original event's date.
     int yearsAhead = (qyear - dStart.year());
     if (yearsAhead % rFreq == 0) {
       // The date is in a year which recurs
       if (qd >= dStart
       &&  ((rDuration > 0 && qd <= endDate()) ||
            (rDuration == 0 && qd <= rEndDateTime.date()) ||
            rDuration == -1)) {
         // The date queried falls within the range of the event.
         int i = qmonth;
         for (QPtrListIterator<int> qlin(rYearNums); qlin.current(); ++qlin) {
           if (i == *qlin.current())
             return true;
         }
       }
     }
   }
   return false;
 }
 
 bool Recurrence::recursYearlyByPos(const QDate &qd) const
 {
   QDate dStart = mRecurStart.date();
   int year  = qd.year();
   int month = qd.month();
   int day   = qd.day();
   // calculate how many years ahead this date is from the original
   // event's date
   int yearsAhead = (year - dStart.year());
   if (yearsAhead % rFreq == 0) {
     // The date is in a year which recurs
     if (qd >= dStart
     &&  ((rDuration > 0 && qd <= endDate()) ||
          (rDuration == 0 && qd <= rEndDateTime.date()) ||
          rDuration == -1)) {
       // The date queried falls within the range of the event.
       for (QPtrListIterator<int> qlin(rYearNums); qlin.current(); ++qlin) {
         if (month == *qlin.current()) {
           // The month recurs
           QValueList<int> days;
           getMonthlyPosDays(days, qd.daysInMonth(), QDate(year, month, 1).dayOfWeek());
           for (QValueList<int>::Iterator it = days.begin();  it != days.end();  ++it) {
             if (*it == day)
               return true;
           }
         }
       }
     }
   }
   return false;
 }
 
 bool Recurrence::recursYearlyByDay(const QDate &qd) const
 {
   QDate dStart = mRecurStart.date();
   // calculate how many years ahead this date is from the original
   // event's date
   int yearsAhead = (qd.year() - dStart.year());
   if (yearsAhead % rFreq == 0) {
     // The date is in a year which recurs
     if (qd >= dStart
     &&  ((rDuration > 0 && qd <= endDate()) ||
          (rDuration == 0 && qd <= rEndDateTime.date()) ||
          rDuration == -1)) {
       // The date queried falls within the range of the event.
       int i = qd.dayOfYear();
       for (QPtrListIterator<int> qlin(rYearNums); qlin.current(); ++qlin) {
         if (i == *qlin.current())
           return true;
       }
     }
   }
   return false;
 }
 
 /* Get the date of the next recurrence, after the specified date.
  * If 'last' is non-null, '*last' is set to true if the next recurrence is the
  * last recurrence, else false.
  * Reply = date of next recurrence, or invalid date if none.
  */
 QDate Recurrence::getNextDateNoTime(const QDate &preDate, bool *last) const
 {
   if (last)
     *last = false;
   QDate dStart = mRecurStart.date();
   if (preDate < dStart)
     return dStart;
   QDate earliestDate = preDate.addDays(1);
   QDate nextDate;
 
   switch (recurs) {
     case rDaily:
       nextDate = dStart.addDays((dStart.daysTo(preDate)/rFreq + 1) * rFreq);
       break;
 
     case rWeekly: {
       QDate start = dStart.addDays(1 - dStart.dayOfWeek());   // start of week for dStart
       int earliestDayOfWeek = earliestDate.dayOfWeek();
       int weeksAhead = start.daysTo(earliestDate) / 7;
       int notThisWeek = weeksAhead % rFreq;    // zero if this week is a recurring week
       weeksAhead -= notThisWeek;               // latest week which recurred
       int weekday = 0;
       // First check for any remaining day this week, if this week is a recurring week
       if (!notThisWeek)
         weekday = getFirstDayInWeek(earliestDayOfWeek);
       // Check for a day in the next scheduled week
       if (!weekday  &&  earliestDayOfWeek > 1)
         weekday = getFirstDayInWeek(rWeekStart) + rFreq*7;
       if (weekday)
         nextDate = start.addDays(weeksAhead*7 + weekday - 1);
       break;
     }
     case rMonthlyDay:
     case rMonthlyPos: {
       int startYear  = dStart.year();
       int startMonth = dStart.month();     // 1..12
       int earliestYear = earliestDate.year();
       int monthsAhead = (earliestYear - startYear)*12 + earliestDate.month() - startMonth;
       int notThisMonth = monthsAhead % rFreq;    // zero if this month is a recurring month
       monthsAhead -= notThisMonth;               // latest month which recurred
       // Check for the first later day in the current month
       if (!notThisMonth)
         nextDate = getFirstDateInMonth(earliestDate);
       if (!nextDate.isValid()  &&  earliestDate.day() > 1) {
         // Check for a day in the next scheduled month
         int months = startMonth - 1 + monthsAhead + rFreq;
         nextDate = getFirstDateInMonth(QDate(startYear + months/12, months%12 + 1, 1));
       }
       break;
     }
     case rYearlyMonth:
     case rYearlyPos:
     case rYearlyDay: {
       int startYear  = dStart.year();
       int yearsAhead = earliestDate.year() - startYear;
       int notThisYear = yearsAhead % rFreq;   // zero if this year is a recurring year
       yearsAhead -= notThisYear;              // latest year which recurred
       // Check for the first later date in the current year
       if (!notThisYear)
         nextDate = getFirstDateInYear(earliestDate);
       // Check for a date in the next scheduled year
       if (!nextDate.isValid()  &&  earliestDate.dayOfYear() > 1)
         nextDate = getFirstDateInYear(QDate(startYear + yearsAhead + rFreq, 1, 1));
       break;
     }
     case rNone:
     default:
       return QDate();
   }
 
   if (rDuration >= 0 && nextDate.isValid()) {
     // Check that the date found is within the range of the recurrence
     QDate end = endDate();
     if (nextDate > end)
       return QDate();
     if (last  &&  nextDate == end)
       *last = true;
   }
   return nextDate;
 }
 
 /* Get the date of the last previous recurrence, before the specified date.
  * Reply = date of previous recurrence, or invalid date if none.
  */
 QDate Recurrence::getPreviousDateNoTime(const QDate &afterDate, bool *last) const
 {
   if (last)
     *last = false;
   QDate dStart = mRecurStart.date();
   QDate latestDate = afterDate.addDays(-1);
   if (latestDate < dStart)
     return QDate();
   QDate prevDate;
 
   switch (recurs) {
     case rDaily:
       prevDate = dStart.addDays((dStart.daysTo(latestDate) / rFreq) * rFreq);
       break;
 
     case rWeekly: {
       QDate start = dStart.addDays(1 - dStart.dayOfWeek());   // start of week for dStart
       int latestDayOfWeek = latestDate.dayOfWeek();
       int weeksAhead = start.daysTo(latestDate) / 7;
       int notThisWeek = weeksAhead % rFreq;    // zero if this week is a recurring week
       weeksAhead -= notThisWeek;               // latest week which recurred
       int weekday = 0;
       // First check for any previous day this week, if this week is a recurring week
       if (!notThisWeek)
         weekday = getLastDayInWeek(latestDayOfWeek);
       // Check for a day in the previous scheduled week
       if (!weekday) {
         int weekEnd = (rWeekStart + 5)%7 + 1;
         if (latestDayOfWeek < weekEnd) {
           if (!notThisWeek)
             weeksAhead -= rFreq;
           weekday = getLastDayInWeek(weekEnd);
         }
       }
       if (weekday)