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authorzautrix <zautrix>2004-06-26 19:01:18 (UTC)
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+/*
+ This file is part of libkcal.
+ Copyright (c) 1998 Preston Brown
+ Copyright (c) 2001 Cornelius Schumacher <schumacher@kde.org>
+ Copyright (c) 2002 David Jarvie <software@astrojar.org.uk>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
+#ifndef KCAL_RECURRENCE_H
+#define KCAL_RECURRENCE_H
+
+#include <qstring.h>
+#include <qbitarray.h>
+#include <qptrlist.h>
+
+namespace KCal {
+
+class Incidence;
+
+/**
+ This class represents a recurrence rule for a calendar incidence.
+*/
+class Recurrence
+{
+ public:
+ /** enumeration for describing how an event recurs, if at all. */
+ enum { rNone = 0, rMinutely = 0x001, rHourly = 0x0002, rDaily = 0x0003,
+ rWeekly = 0x0004, rMonthlyPos = 0x0005, rMonthlyDay = 0x0006,
+ rYearlyMonth = 0x0007, rYearlyDay = 0x0008, rYearlyPos = 0x0009 };
+
+ /** Enumeration for specifying what date yearly recurrences of February 29th occur
+ * in non-leap years. */
+ enum Feb29Type {
+ rMar1, // recur on March 1st (default)
+ rFeb28, // recur on February 28th
+ rFeb29 // only recur on February 29th, i.e. don't recur in non-leap years
+ };
+
+ /** structure for Recurs rMonthlyPos */
+ struct rMonthPos {
+ QBitArray rDays;
+ short rPos;
+ bool negative;
+ };
+
+ Recurrence(Incidence *parent, int compatVersion = 0);
+ Recurrence(const Recurrence&, Incidence *parent);
+ ~Recurrence();
+
+ bool operator==( const Recurrence& ) const;
+ bool operator!=( const Recurrence& r ) const { return !operator==(r); }
+
+ Incidence *parent() { return mParent; }
+
+ /** Return the start of the recurrence */
+ QDateTime recurStart() const { return mRecurStart; }
+ /** Returns the number of exception dates for the recurrence */
+ int recurExDatesCount() const { return mRecurExDatesCount; }
+ /** Set start of recurrence, as a date and time. */
+ void setRecurStart(const QDateTime &start);
+ /** Set start of recurrence, as a date with no time.
+ * Recurrence types which are sub-daily (e.g. rHourly) always have a time;
+ * the time is set to 00:00:00 in these cases. */
+ void setRecurStart(const QDate &start);
+ /** Set whether the recurrence has no time, just a date.
+ * Recurrence types which are sub-daily (e.g. rHourly) always have a time
+ * and cannot be set to float.
+ * N.B. This property is derived by default from the parent incidence,
+ * or according to whether a time is specified in setRecurStart(). */
+ void setFloats(bool f);
+ /**
+ Returns whether the recurrence has no time, just a date.
+ */
+ bool doesFloat() const {
+ return mFloats;
+ }
+
+ /** Set if recurrence is read-only or can be changed. */
+ void setRecurReadOnly(bool readOnly) { mRecurReadOnly = readOnly; }
+ bool recurReadOnly() const
+ {
+ return mRecurReadOnly;
+ }
+
+
+ /** Set number of exception dates. */
+ void setRecurExDatesCount(int count) { if (count >= 0) mRecurExDatesCount = count; }
+ /** Set the calendar file version for backwards compatibility.
+ * @var version is the KOrganizer/libkcal version, e.g. 220 for KDE 2.2.0.
+ * Specify version = 0 to cancel compatibility mode.
+ */
+ void setCompatVersion(int version = 0);
+
+ /** Returns the event's recurrence status. See the enumeration at the top
+ * of this file for possible values. */
+ ushort doesRecur() const;
+ /** Returns true if the date specified is one on which the event will
+ * recur. */
+ bool recursOnPure(const QDate &qd) const;
+ /** Returns true if the date/time specified is one at which the event will
+ * recur. Times are rounded down to the nearest minute to determine the result. */
+ bool recursAtPure(const QDateTime &) const;
+ /** Turns off recurrence for the event. */
+ void unsetRecurs();
+
+ /** Returns the date of the next recurrence, after the specified date.
+ * @var preDate the date after which to find the recurrence.
+ * @var last if 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 getNextDate(const QDate& preDate, bool* last = 0) const;
+ /** Returns the date and time of the next recurrence, after the specified date/time.
+ * If the recurrence has no time, the next date after the specified date is returned.
+ * @var preDate the date/time after which to find the recurrence.
+ * @var last if non-null, *last is set to true if the next recurrence is the
+ * last recurrence, else false.
+ * Reply = date/time of next recurrence, or invalid date if none.
+ */
+ QDateTime getNextDateTime(const QDateTime& preDateTime, bool* last = 0) const;
+ /** Returns the date of the last previous recurrence, before the specified date.
+ * @var afterDate the date before which to find the recurrence.
+ * @var last if non-null, *last is set to true if the previous recurrence is the
+ * last recurrence, else false.
+ * Reply = date of previous recurrence, or invalid date if none.
+ */
+ QDate getPreviousDate(const QDate& afterDate, bool* last = 0) const;
+ /** Returns the date and time of the last previous recurrence, before the specified date/time.
+ * If a time later than 00:00:00 is specified and the recurrence has no time, 00:00:00 on
+ * the specified date is returned if that date recurs.
+ * @var afterDate the date/time before which to find the recurrence.
+ * @var last if non-null, *last is set to true if the previous recurrence is the
+ * last recurrence, else false.
+ * Reply = date/time of previous recurrence, or invalid date if none.
+ */
+ QDateTime getPreviousDateTime(const QDateTime& afterDateTime, bool* last = 0) const;
+
+ /** Returns frequency of recurrence, in terms of the recurrence time period type. */
+ int frequency() const;
+ /** Returns the total number of recurrences, including the initial occurrence. */
+ int duration() const;
+ /** Sets the total number of times the event is to occur, including both the
+ * first and last. */
+ void setDuration(int duration);
+ /** Returns the number of recurrences up to and including the date specified. */
+ int durationTo(const QDate &) const;
+ /** Returns the number of recurrences up to and including the date/time specified. */
+ int durationTo(const QDateTime &) const;
+
+ /** Returns the date of the last recurrence.
+ * An invalid date is returned if the recurrence has no end.
+ * Note: for some recurrence types, endDate() can involve significant calculation.
+ */
+ QDate endDate() const;
+ /** Returns the date and time of the last recurrence.
+ * An invalid date is returned if the recurrence has no end.
+ * Note: for some recurrence types, endDateTime() can involve significant calculation.
+ */
+ QDateTime endDateTime() const;
+ /** Returns a string representing the recurrence end date in the format
+ according to the user's locale settings. */
+ QString endDateStr(bool shortfmt=true) const;
+
+ /** Sets an event to recur minutely.
+ * @var _rFreq the frequency to recur, e.g. 2 is every other minute
+ * @var duration the number of times the event is to occur, or -1 to recur indefinitely.
+ */
+ void setMinutely(int _rFreq, int duration);
+ /** Sets an event to recur minutely.
+ * @var _rFreq the frequency to recur, e.g. 2 is every other minute
+ * @var endDateTime the ending date/time after which to stop recurring
+ */
+ void setMinutely(int _rFreq, const QDateTime &endDateTime);
+
+ /** Sets an event to recur hourly.
+ * @var _rFreq the frequency to recur, e.g. 2 is every other hour
+ * @var duration the number of times the event is to occur, or -1 to recur indefinitely.
+ */
+ void setHourly(int _rFreq, int duration);
+ /** Sets an event to recur hourly.
+ * @var _rFreq the frequency to recur, e.g. 2 is every other hour
+ * @var endDateTime the ending date/time after which to stop recurring
+ */
+ void setHourly(int _rFreq, const QDateTime &endDateTime);
+
+ /** Sets an event to recur daily.
+ * @var _rFreq the frequency to recur, e.g. 2 is every other day
+ * @var duration the number of times the event is to occur, or -1 to recur indefinitely.
+ */
+ void setDaily(int _rFreq, int duration);
+ /** Sets an event to recur daily.
+ * @var _rFreq the frequency to recur, e.g. 2 is every other day
+ * @var endDate the ending date after which to stop recurring
+ */
+ void setDaily(int _rFreq, const QDate &endDate);
+
+ /** Sets an event to recur weekly.
+ * @var _rFreq the frequency to recur, e.g. every other week etc.
+ * @var _rDays a 7 bit array indicating which days on which to recur (bit 0 = Monday).
+ * @var duration the number of times the event is to occur, or -1 to recur indefinitely.
+ * @var weekStart the first day of the week (Monday=1 .. Sunday=7, default is Monday).
+ */
+ void setWeekly(int _rFreq, const QBitArray &_rDays, int duration, int weekStart = 1);
+ /** Sets an event to recur weekly.
+ * @var _rFreq the frequency to recur, e.g. every other week etc.
+ * @var _rDays a 7 bit array indicating which days on which to recur (bit 0 = Monday).
+ * @var endDate the date on which to stop recurring.
+ * @var weekStart the first day of the week (Monday=1 .. Sunday=7, default is Monday).
+ */
+ void setWeekly(int _rFreq, const QBitArray &_rDays, const QDate &endDate, int weekStart = 1);
+ /** Returns the first day of the week. Monday=1 .. Sunday=7. */
+ int weekStart() const { return rWeekStart; }
+ /** Returns week day mask (bit 0 = Monday). */
+ const QBitArray &days() const;
+
+ /** Sets an event to recur monthly.
+ * @var type rMonthlyPos or rMonthlyDay
+ * @var _rFreq the frequency to recur, e.g. 3 for every third month.
+ * @var duration the number of times the event is to occur, or -1 to recur indefinitely.
+ */
+ void setMonthly(short type, int _rFreq, int duration);
+ /** same as above, but with ending date not number of recurrences */
+ void setMonthly(short type, int _rFreq, const QDate &endDate);
+ /** Adds a position to the recursMonthlyPos recurrence rule, if it is
+ * set.
+ * @var _rPos the position in the month for the recurrence, with valid
+ * values being 1-5 (5 weeks max in a month).
+ * @var _rDays the days for the position to recur on (bit 0 = Monday).
+ * Example: _rPos = 2, and bits 0 and 2 are set in _rDays:
+ * the rule is to repeat every 2nd Monday and Wednesday in the month.
+ */
+ void addMonthlyPos(short _rPos, const QBitArray &_rDays);
+ /** Adds a position the the recursMonthlyDay list.
+ * @var _rDay the date in the month to recur.
+ */
+ void addMonthlyDay(short _rDay);
+ /** Returns list of day positions in months. */
+ const QPtrList<rMonthPos> &monthPositions() const;
+ /** Returns list of day numbers of a month. */
+ const QPtrList<int> &monthDays() const;
+
+ /** Sets an event to recur yearly.
+ * @var type rYearlyMonth, rYearlyPos or rYearlyDay
+ * @var freq the frequency to recur, e.g. 3 for every third year.
+ * @var duration the number of times the event is to occur, or -1 to recur indefinitely.
+ */
+ void setYearly(int type, int freq, int duration);
+ /** Sets an event to recur yearly ending at \a endDate. */
+ void setYearly(int type, int freq, const QDate &endDate);
+ /** Sets an event to recur yearly on specified dates.
+ * The dates must be specified by calling addYearlyNum().
+ * @var type the way recurrences of February 29th are to be handled in non-leap years.
+ * @var freq the frequency to recur, e.g. 3 for every third year.
+ * @var duration the number of times the event is to occur, or -1 to recur indefinitely.
+ */
+ void setYearlyByDate(Feb29Type type, int freq, int duration);
+ /** Sets an event to recur yearly ending at \a endDate. */
+ void setYearlyByDate(Feb29Type type, int freq, const QDate &endDate);
+ /** Adds position of day or month in year.
+ * N.B. for recursYearlyPos, addYearlyMonthPos() must also be called
+ * to add positions within the month. */
+ void addYearlyNum(short _rNum);
+ /** Adds a position to the recursYearlyPos recurrence rule, if it is set.
+ * N.B. addYearlyNum() must also be called to add recurrence months.
+ * Parameters are the same as for addMonthlyPos().
+ */
+ void addYearlyMonthPos(short _rPos, const QBitArray &_rDays);
+ /** Returns positions of days or months in year. */
+ const QPtrList<int> &yearNums() const;
+ /** Returns list of day positions in months, for a recursYearlyPos recurrence rule. */
+ const QPtrList<rMonthPos> &yearMonthPositions() const;
+ /** Returns how yearly recurrences of February 29th are handled. */
+ Feb29Type feb29YearlyType() const { return mFeb29YearlyType; }
+ /** Sets the default method for handling yearly recurrences of February 29th. */
+ static void setFeb29YearlyTypeDefault(Feb29Type t) { mFeb29YearlyDefaultType = t; }
+ /** Returns the default method for handling yearly recurrences of February 29th. */
+ static Feb29Type setFeb29YearlyTypeDefault() { return mFeb29YearlyDefaultType; }
+
+ /**
+ Debug output.
+ */
+ void dump() const;
+ QString recurrenceText() const;
+
+ protected:
+ enum PeriodFunc { END_DATE_AND_COUNT, COUNT_TO_DATE, NEXT_AFTER_DATE };
+ struct MonthlyData; friend struct MonthlyData;
+ struct YearlyMonthData; friend struct YearlyMonthData;
+ struct YearlyPosData; friend struct YearlyPosData;
+ struct YearlyDayData; friend struct YearlyDayData;
+
+ bool recursSecondly(const QDate &, int secondFreq) const;
+ bool recursMinutelyAt(const QDateTime &dt, int minuteFreq) const;
+ bool recursDaily(const QDate &) const;
+ bool recursWeekly(const QDate &) const;
+ bool recursMonthly(const QDate &) const;
+ bool recursYearlyByMonth(const QDate &) const;
+ bool recursYearlyByPos(const QDate &) const;
+ bool recursYearlyByDay(const QDate &) const;
+
+ QDate getNextDateNoTime(const QDate& preDate, bool* last) const;
+ QDate getPreviousDateNoTime(const QDate& afterDate, bool* last) const;
+
+ void addMonthlyPos_(short _rPos, const QBitArray &_rDays);
+ void setDailySub(short type, int freq, int duration);
+ void setYearly_(short type, Feb29Type, int freq, int duration);
+ int recurCalc(PeriodFunc, QDate &enddate) const;
+ int recurCalc(PeriodFunc, QDateTime &endtime) const;
+ int secondlyCalc(PeriodFunc, QDateTime& endtime, int freq) const;
+ int dailyCalc(PeriodFunc, QDate &enddate) const;
+ int weeklyCalc(PeriodFunc, QDate &enddate) const;
+ int weeklyCalcEndDate(QDate& enddate, int daysPerWeek) const;
+ int weeklyCalcToDate(const QDate& enddate, int daysPerWeek) const;
+ int weeklyCalcNextAfter(QDate& enddate, int daysPerWeek) const;
+ int monthlyCalc(PeriodFunc, QDate &enddate) const;
+ int monthlyCalcEndDate(QDate& enddate, MonthlyData&) const;
+ int monthlyCalcToDate(const QDate& enddate, MonthlyData&) const;
+ int monthlyCalcNextAfter(QDate& enddate, MonthlyData&) const;
+ int yearlyMonthCalc(PeriodFunc, QDate &enddate) const;
+ int yearlyMonthCalcEndDate(QDate& enddate, YearlyMonthData&) const;
+ int yearlyMonthCalcToDate(const QDate& enddate, YearlyMonthData&) const;
+ int yearlyMonthCalcNextAfter(QDate& enddate, YearlyMonthData&) const;
+ int yearlyPosCalc(PeriodFunc, QDate &enddate) const;
+ int yearlyPosCalcEndDate(QDate& enddate, YearlyPosData&) const;
+ int yearlyPosCalcToDate(const QDate& enddate, YearlyPosData&) const;
+ int yearlyPosCalcNextAfter(QDate& enddate, YearlyPosData&) const;
+ int yearlyDayCalc(PeriodFunc, QDate &enddate) const;
+ int yearlyDayCalcEndDate(QDate& enddate, YearlyDayData&) const;
+ int yearlyDayCalcToDate(const QDate& enddate, YearlyDayData&) const;
+ int yearlyDayCalcNextAfter(QDate& enddate, YearlyDayData&) const;
+
+ int countMonthlyPosDays() const;
+ void getMonthlyPosDays(QValueList<int>&, int daysInMonth,
+ int startDayOfWeek) const;
+ bool getMonthlyDayDays(QValueList<int>&, int daysInMonth) const;
+ bool getYearlyMonthMonths(int day, QValueList<int>&,
+ QValueList<int> &leaplist) const;
+
+ int getFirstDayInWeek(int startDay, bool useWeekStart = true) const;
+ int getLastDayInWeek(int endDay, bool useWeekStart = true) const;
+ QDate getFirstDateInMonth(const QDate& earliestDate) const;
+ QDate getLastDateInMonth(const QDate& latestDate) const;
+ QDate getFirstDateInYear(const QDate& earliestDate) const;
+ QDate getLastDateInYear(const QDate& latestDate) const;
+
+ private:
+ // Prohibit copying
+ Recurrence(const Recurrence&);
+ Recurrence &operator=(const Recurrence&);
+
+ short recurs; // should be one of the enums.
+
+ int rWeekStart; // day which starts the week, Monday=1 .. Sunday=7
+ QBitArray rDays; // array of days during week it recurs
+
+ QPtrList<rMonthPos> rMonthPositions; // list of positions during a month
+ // on which an event recurs
+
+ QPtrList<int> rMonthDays; // list of days during a month on
+ // which the event recurs
+
+ QPtrList<int> rYearNums; // either months/days to recur on for rYearly,
+ // sorted in numerical order
+
+ int rFreq; // frequency of period
+
+ // one of the following must be specified
+ int rDuration; // num times to recur (inc. first occurrence), -1 = infinite
+ QDateTime rEndDateTime; // date/time at which to end recurrence
+
+ QDateTime mRecurStart; // date/time of first recurrence
+ bool mFloats; // the recurrence has no time, just a date
+ bool mRecurReadOnly;
+ int mRecurExDatesCount; // number of recurrences (in addition to rDuration) which are excluded
+ Feb29Type mFeb29YearlyType; // how to handle yearly recurrences of February 29th
+ static Feb29Type mFeb29YearlyDefaultType; // default value for mFeb29YearlyType
+
+ // Backwards compatibility for KDE < 3.1.
+ int mCompatVersion; // calendar file version for backwards compatibility
+ short mCompatRecurs; // original 'recurs' in old calendar format, or rNone
+ int mCompatDuration; // original 'rDuration' in old calendar format, or 0
+
+ Incidence *mParent;
+};
+
+}
+
+#endif