libkcal

calendarlocal.cpp

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00001 /*
00002     This file is part of libkcal.
00003 
00004     Copyright (c) 1998 Preston Brown <pbrown@kde.org>
00005     Copyright (c) 2001,2003,2004 Cornelius Schumacher <schumacher@kde.org>
00006     Copyright (C) 2003-2004 Reinhold Kainhofer <reinhold@kainhofer.com>
00007 
00008     This library is free software; you can redistribute it and/or
00009     modify it under the terms of the GNU Library General Public
00010     License as published by the Free Software Foundation; either
00011     version 2 of the License, or (at your option) any later version.
00012 
00013     This library is distributed in the hope that it will be useful,
00014     but WITHOUT ANY WARRANTY; without even the implied warranty of
00015     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016     Library General Public License for more details.
00017 
00018     You should have received a copy of the GNU Library General Public License
00019     along with this library; see the file COPYING.LIB.  If not, write to
00020     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00021     Boston, MA 02110-1301, USA.
00022 */
00023 
00024 #include <qdatetime.h>
00025 #include <qstring.h>
00026 #include <qptrlist.h>
00027 
00028 #include <kdebug.h>
00029 #include <klocale.h>
00030 #include <kmessagebox.h>
00031 
00032 #include "vcaldrag.h"
00033 #include "vcalformat.h"
00034 #include "icalformat.h"
00035 #include "exceptions.h"
00036 #include "incidence.h"
00037 #include "journal.h"
00038 #include "filestorage.h"
00039 
00040 #include "calendarlocal.h"
00041 
00042 using namespace KCal;
00043 
00044 CalendarLocal::CalendarLocal( const QString &timeZoneId )
00045   : Calendar( timeZoneId ), mEvents( 47 )
00046 {
00047   init();
00048 }
00049 
00050 void CalendarLocal::init()
00051 {
00052   mDeletedIncidences.setAutoDelete( true );
00053   mFileName = QString::null;
00054 }
00055 
00056 
00057 CalendarLocal::~CalendarLocal()
00058 {
00059   close();
00060 }
00061 
00062 bool CalendarLocal::load( const QString &fileName, CalFormat *format )
00063 {
00064   mFileName = fileName;
00065   FileStorage storage( this, fileName, format );
00066   return storage.load();
00067 }
00068 
00069 bool CalendarLocal::reload( const QString &tz )
00070 {
00071   const QString filename = mFileName;
00072   save();
00073   close();
00074   mFileName = filename;
00075   setTimeZoneId( tz );
00076   FileStorage storage( this, mFileName );
00077   return storage.load();
00078 }
00079 
00080 bool CalendarLocal::save( const QString &fileName, CalFormat *format )
00081 {
00082   // Save only if the calendar is either modified, or saved to a
00083   // different file than it was loaded from
00084   if ( mFileName != fileName || isModified() ) {
00085     FileStorage storage( this, fileName, format );
00086     return storage.save();
00087   } else {
00088     return true;
00089   }
00090 }
00091 
00092 void CalendarLocal::close()
00093 {
00094   setObserversEnabled( false );
00095   mFileName = QString::null;
00096 
00097   deleteAllEvents();
00098   deleteAllTodos();
00099   deleteAllJournals();
00100 
00101   mDeletedIncidences.clear();
00102   setModified( false );
00103 
00104   setObserversEnabled( true );
00105 }
00106 
00107 
00108 bool CalendarLocal::addEvent( Event *event )
00109 {
00110   insertEvent( event );
00111 
00112   event->registerObserver( this );
00113 
00114   setModified( true );
00115 
00116   notifyIncidenceAdded( event );
00117 
00118   return true;
00119 }
00120 
00121 bool CalendarLocal::deleteEvent( Event *event )
00122 {
00123 //  kdDebug(5800) << "CalendarLocal::deleteEvent" << endl;
00124 
00125   if ( mEvents.remove( event->uid() ) ) {
00126     setModified( true );
00127     notifyIncidenceDeleted( event );
00128     mDeletedIncidences.append( event );
00129     return true;
00130   } else {
00131     kdWarning() << "CalendarLocal::deleteEvent(): Event not found." << endl;
00132     return false;
00133   }
00134 }
00135 
00136 void CalendarLocal::deleteAllEvents()
00137 {
00138   // kdDebug(5800) << "CalendarLocal::deleteAllEvents" << endl;
00139   QDictIterator<Event> it( mEvents );
00140   while( it.current() ) {
00141     notifyIncidenceDeleted( it.current() );
00142     ++it;
00143   }
00144 
00145   mEvents.setAutoDelete( true );
00146   mEvents.clear();
00147   mEvents.setAutoDelete( false );
00148 }
00149 
00150 Event *CalendarLocal::event( const QString &uid )
00151 {
00152 //  kdDebug(5800) << "CalendarLocal::event(): " << uid << endl;
00153   return mEvents[ uid ];
00154 }
00155 
00156 bool CalendarLocal::addTodo( Todo *todo )
00157 {
00158   mTodoList.append( todo );
00159 
00160   todo->registerObserver( this );
00161 
00162   // Set up subtask relations
00163   setupRelations( todo );
00164 
00165   setModified( true );
00166 
00167   notifyIncidenceAdded( todo );
00168 
00169   return true;
00170 }
00171 
00172 bool CalendarLocal::deleteTodo( Todo *todo )
00173 {
00174   // Handle orphaned children
00175   removeRelations( todo );
00176 
00177   if ( mTodoList.removeRef( todo ) ) {
00178     setModified( true );
00179     notifyIncidenceDeleted( todo );
00180     mDeletedIncidences.append( todo );
00181     return true;
00182   } else {
00183     kdWarning() << "CalendarLocal::deleteTodo(): Todo not found." << endl;
00184     return false;
00185   }
00186 }
00187 
00188 void CalendarLocal::deleteAllTodos()
00189 {
00190   // kdDebug(5800) << "CalendarLocal::deleteAllTodos()\n";
00191   Todo::List::ConstIterator it;
00192   for( it = mTodoList.begin(); it != mTodoList.end(); ++it ) {
00193     notifyIncidenceDeleted( *it );
00194   }
00195 
00196   mTodoList.setAutoDelete( true );
00197   mTodoList.clearAll();
00198   mTodoList.setAutoDelete( false );
00199 }
00200 
00201 Todo::List CalendarLocal::rawTodos( TodoSortField sortField,
00202                                     SortDirection sortDirection )
00203 {
00204   return sortTodos( &mTodoList, sortField, sortDirection );
00205 }
00206 
00207 Todo *CalendarLocal::todo( const QString &uid )
00208 {
00209   Todo::List::ConstIterator it;
00210   for ( it = mTodoList.begin(); it != mTodoList.end(); ++it ) {
00211     if ( (*it)->uid() == uid ) return *it;
00212   }
00213 
00214   return 0;
00215 }
00216 
00217 Todo::List CalendarLocal::rawTodosForDate( const QDate &date )
00218 {
00219   Todo::List todos;
00220 
00221   Todo::List::ConstIterator it;
00222   for ( it = mTodoList.begin(); it != mTodoList.end(); ++it ) {
00223     Todo *todo = *it;
00224     if ( todo->hasDueDate() && todo->dtDue().date() == date ) {
00225       todos.append( todo );
00226     }
00227   }
00228 
00229   return todos;
00230 }
00231 
00232 Alarm::List CalendarLocal::alarmsTo( const QDateTime &to )
00233 {
00234   return alarms( QDateTime( QDate( 1900, 1, 1 ) ), to );
00235 }
00236 
00237 Alarm::List CalendarLocal::alarms( const QDateTime &from, const QDateTime &to )
00238 {
00239 //  kdDebug(5800) << "CalendarLocal::alarms(" << from.toString() << " - "
00240 //                << to.toString() << ")" << endl;
00241 
00242   Alarm::List alarms;
00243 
00244   EventDictIterator it( mEvents );
00245   for( ; it.current(); ++it ) {
00246     Event *e = *it;
00247     if ( e->doesRecur() ) appendRecurringAlarms( alarms, e, from, to );
00248     else appendAlarms( alarms, e, from, to );
00249   }
00250 
00251   Todo::List::ConstIterator it2;
00252   for( it2 = mTodoList.begin(); it2 != mTodoList.end(); ++it2 ) {
00253     if (! (*it2)->isCompleted() ) appendAlarms( alarms, *it2, from, to );
00254   }
00255 
00256   return alarms;
00257 }
00258 
00259 void CalendarLocal::appendAlarms( Alarm::List &alarms, Incidence *incidence,
00260                                   const QDateTime &from, const QDateTime &to )
00261 {
00262   QDateTime preTime = from.addSecs(-1);
00263   Alarm::List::ConstIterator it;
00264   for( it = incidence->alarms().begin(); it != incidence->alarms().end();
00265        ++it ) {
00266     if ( (*it)->enabled() ) {
00267       QDateTime dt = (*it)->nextRepetition(preTime);
00268       if ( dt.isValid() && dt <= to ) {
00269         kdDebug(5800) << "CalendarLocal::appendAlarms() '"
00270                       << incidence->summary() << "': "
00271                       << dt.toString() << endl;
00272         alarms.append( *it );
00273       }
00274     }
00275   }
00276 }
00277 
00278 void CalendarLocal::appendRecurringAlarms( Alarm::List &alarms,
00279                                            Incidence *incidence,
00280                                            const QDateTime &from,
00281                                            const QDateTime &to )
00282 {
00283   QDateTime qdt;
00284   int  endOffset = 0;
00285   bool endOffsetValid = false;
00286   int  period = from.secsTo(to);
00287   Alarm::List::ConstIterator it;
00288   for( it = incidence->alarms().begin(); it != incidence->alarms().end();
00289        ++it ) {
00290     Alarm *alarm = *it;
00291     if ( alarm->enabled() ) {
00292       if ( alarm->hasTime() ) {
00293         // The alarm time is defined as an absolute date/time
00294         qdt = alarm->nextRepetition( from.addSecs(-1) );
00295         if ( !qdt.isValid() || qdt > to )
00296           continue;
00297       } else {
00298         // The alarm time is defined by an offset from the event start or end time.
00299         // Find the offset from the event start time, which is also used as the
00300         // offset from the recurrence time.
00301         int offset = 0;
00302         if ( alarm->hasStartOffset() ) {
00303           offset = alarm->startOffset().asSeconds();
00304         } else if ( alarm->hasEndOffset() ) {
00305           if ( !endOffsetValid ) {
00306             endOffset = incidence->dtStart().secsTo( incidence->dtEnd() );
00307             endOffsetValid = true;
00308           }
00309           offset = alarm->endOffset().asSeconds() + endOffset;
00310         }
00311 
00312         // Adjust the 'from' date/time and find the next recurrence at or after it
00313         qdt = incidence->recurrence()->getNextDateTime( from.addSecs(-offset - 1) );
00314         if ( !qdt.isValid()
00315         ||   (qdt = qdt.addSecs( offset )) > to )    // remove the adjustment to get the alarm time
00316         {
00317           // The next recurrence is too late.
00318           if ( !alarm->repeatCount() )
00319             continue;
00320           // The alarm has repetitions, so check whether repetitions of previous
00321           // recurrences fall within the time period.
00322           bool found = false;
00323           qdt = from.addSecs( -offset );
00324           while ( (qdt = incidence->recurrence()->getPreviousDateTime( qdt )).isValid() ) {
00325             int toFrom = qdt.secsTo( from ) - offset;
00326             if ( toFrom > alarm->duration() )
00327               break;     // this recurrence's last repetition is too early, so give up
00328             // The last repetition of this recurrence is at or after 'from' time.
00329             // Check if a repetition occurs between 'from' and 'to'.
00330             int snooze = alarm->snoozeTime() * 60;   // in seconds
00331             if ( period >= snooze
00332             ||   toFrom % snooze == 0
00333             ||   (toFrom / snooze + 1) * snooze <= toFrom + period ) {
00334               found = true;
00335 #ifndef NDEBUG
00336               qdt = qdt.addSecs( offset + ((toFrom-1) / snooze + 1) * snooze );   // for debug output
00337 #endif
00338               break;
00339             }
00340           }
00341           if ( !found )
00342             continue;
00343         }
00344       }
00345       kdDebug(5800) << "CalendarLocal::appendAlarms() '" << incidence->summary()
00346                     << "': " << qdt.toString() << endl;
00347       alarms.append( alarm );
00348     }
00349   }
00350 }
00351 
00352 
00353 void CalendarLocal::incidenceUpdated( IncidenceBase *incidence )
00354 {
00355   incidence->setSyncStatusSilent( Event::SYNCMOD );
00356   incidence->setLastModified( QDateTime::currentDateTime() );
00357   // we should probably update the revision number here,
00358   // or internally in the Event itself when certain things change.
00359   // need to verify with ical documentation.
00360 
00361   // The static_cast is ok as the CalendarLocal only observes Incidence objects
00362   notifyIncidenceChanged( static_cast<Incidence *>( incidence ) );
00363 
00364   setModified( true );
00365 }
00366 
00367 void CalendarLocal::insertEvent( Event *event )
00368 {
00369   QString uid = event->uid();
00370   if ( mEvents[ uid ] == 0 ) {
00371     mEvents.insert( uid, event );
00372   }
00373 #ifndef NDEBUG
00374   else // if we already have an event with this UID, it has to be the same event,
00375       // otherwise something's really broken
00376       Q_ASSERT( mEvents[uid] == event );
00377 #endif
00378 }
00379 
00380 Event::List CalendarLocal::rawEventsForDate( const QDate &qd,
00381                                              EventSortField sortField,
00382                                              SortDirection sortDirection )
00383 {
00384   Event::List eventList;
00385 
00386   EventDictIterator it( mEvents );
00387   for( ; it.current(); ++it ) {
00388     Event *event = *it;
00389 
00390     if ( event->doesRecur() ) {
00391       if ( event->isMultiDay() ) {
00392         int extraDays = event->dtStart().date().daysTo( event->dtEnd().date() );
00393         int i;
00394         for ( i = 0; i <= extraDays; i++ ) {
00395           if ( event->recursOn( qd.addDays( -i ) ) ) {
00396             eventList.append( event );
00397             break;
00398           }
00399         }
00400       } else {
00401         if ( event->recursOn( qd ) )
00402           eventList.append( event );
00403       }
00404     } else {
00405       if ( event->dtStart().date() <= qd && event->dateEnd() >= qd ) {
00406         eventList.append( event );
00407       }
00408     }
00409   }
00410 
00411   return sortEvents( &eventList, sortField, sortDirection );
00412 }
00413 
00414 Event::List CalendarLocal::rawEvents( const QDate &start, const QDate &end,
00415                                           bool inclusive )
00416 {
00417   Event::List eventList;
00418   QDate yesterStart = start.addDays(-1);
00419 
00420   // Get non-recurring events
00421   EventDictIterator it( mEvents );
00422   for( ; it.current(); ++it ) {
00423     Event *event = *it;
00424 
00425     QDate rStart = event->dtStart().date();
00426     if (end < rStart) {
00427 //      kdDebug(5800) << "Skipping event starting after TOI" << endl;
00428       continue;
00429     }
00430     if ( inclusive && rStart < start) {
00431 //      kdDebug(5800) << "Skipping event starting before TOI while inclusive" << endl;
00432       continue;
00433     }
00434 
00435     if ( ! event->doesRecur() ) { // non-recurring events
00436       QDate rEnd = event->dtEnd().date();
00437       if (rEnd < start) {
00438 //        kdDebug(5800) << "Skipping event ending before TOI" << endl;
00439         continue;
00440       }
00441       if ( inclusive && end < rEnd ) {
00442 //        kdDebug(5800) << "Skipping event ending after TOI while inclusive" << endl;
00443         continue;
00444       }
00445     } else { // recurring events
00446       switch ( event->recurrence()->duration() ) {
00447         case -1: // infinite
00448           if ( inclusive ) {
00449 //            kdDebug(5800) << "Skipping infinite event because inclusive" << endl;
00450             continue;
00451           }
00452           break;
00453         case 0: // end date given
00454         default: // count given
00455           QDate rEnd = event->recurrence()->endDate();
00456           if ( ! rEnd.isValid() ) {
00457 //            kdDebug(5800) << "Skipping recurring event without occurences" << endl;
00458             continue;
00459           }
00460           if ( rEnd < start ) {
00461 //            kdDebug(5800) << "Skipping recurring event ending before TOI" << endl;
00462             continue;
00463           }
00464           if ( inclusive && end < rEnd ) {
00465 //            kdDebug(5800) << "Skipping recurring event ending after TOI while inclusive" << endl;
00466             continue;
00467           }
00468           /* FIXME: too much conversion between QDate and QDateTime makes this useless:
00469            *   freebusy(end=QDateTime(day, "00:00:00")) ->
00470            *   rawEvents(end=QDate(day)) ->
00471            *   durationTo(QDateTime(day, "23:59:59"))
00472            * so events repeating at the end day match and are included.
00473            */
00474 #if 0
00475           int durationBeforeStart = event->recurrence()->durationTo(yesterStart);
00476           int durationUntilEnd = event->recurrence()->durationTo(end);
00477           if (durationBeforeStart == durationUntilEnd) {
00478             kdDebug(5800) << "Skipping recurring event without occurences in TOI" << endl;
00479             continue;
00480           }
00481 #endif
00482           break;
00483       } // switch(duration)
00484     } // if(doesRecur)
00485 
00486     eventList.append( event );
00487   }
00488 
00489   return eventList;
00490 }
00491 
00492 Event::List CalendarLocal::rawEventsForDate( const QDateTime &qdt )
00493 {
00494   return rawEventsForDate( qdt.date() );
00495 }
00496 
00497 Event::List CalendarLocal::rawEvents( EventSortField sortField, SortDirection sortDirection )
00498 {
00499   Event::List eventList;
00500   EventDictIterator it( mEvents );
00501   for( ; it.current(); ++it )
00502     eventList.append( *it );
00503   return sortEvents( &eventList, sortField, sortDirection );
00504 }
00505 
00506 bool CalendarLocal::addJournal(Journal *journal)
00507 {
00508 //   if (journal->dtStart().isValid())
00509 //     kdDebug(5800) << "Adding Journal on " << journal->dtStart().toString() << endl;
00510 //   else
00511 //     kdDebug(5800) << "Adding Journal without a DTSTART" << endl;
00512 
00513   mJournalList.append(journal);
00514 
00515   journal->registerObserver( this );
00516 
00517   setModified( true );
00518 
00519   notifyIncidenceAdded( journal );
00520 
00521   return true;
00522 }
00523 
00524 bool CalendarLocal::deleteJournal( Journal *journal )
00525 {
00526   if ( mJournalList.removeRef( journal ) ) {
00527     setModified( true );
00528     notifyIncidenceDeleted( journal );
00529     mDeletedIncidences.append( journal );
00530     return true;
00531   } else {
00532     kdWarning() << "CalendarLocal::deleteJournal(): Journal not found." << endl;
00533     return false;
00534   }
00535 }
00536 
00537 void CalendarLocal::deleteAllJournals()
00538 {
00539   Journal::List::ConstIterator it;
00540   for( it = mJournalList.begin(); it != mJournalList.end(); ++it ) {
00541     notifyIncidenceDeleted( *it );
00542   }
00543 
00544   mJournalList.setAutoDelete( true );
00545   mJournalList.clearAll();
00546   mJournalList.setAutoDelete( false );
00547 }
00548 
00549 Journal *CalendarLocal::journal( const QString &uid )
00550 {
00551   Journal::List::ConstIterator it;
00552   for ( it = mJournalList.begin(); it != mJournalList.end(); ++it )
00553     if ( (*it)->uid() == uid )
00554       return *it;
00555 
00556   return 0;
00557 }
00558 
00559 Journal::List CalendarLocal::rawJournals( JournalSortField sortField, SortDirection sortDirection )
00560 {
00561   return sortJournals( &mJournalList, sortField, sortDirection );
00562 }
00563 
00564 Journal::List CalendarLocal::rawJournalsForDate( const QDate &date )
00565 {
00566   Journal::List journals;
00567 
00568   Journal::List::ConstIterator it;
00569   for ( it = mJournalList.begin(); it != mJournalList.end(); ++it ) {
00570     Journal *journal = *it;
00571     if ( journal->dtStart().date() == date ) {
00572       journals.append( journal );
00573     }
00574   }
00575 
00576   return journals;
00577 }
00578 
00579 void CalendarLocal::setTimeZoneIdViewOnly( const QString& tz )
00580 {
00581   const QString question( i18n("The timezone setting was changed. In order to display the calendar "
00582       "you are looking at in the new timezone, it needs to be saved. Do you want to save the pending "
00583       "changes or rather wait and apply the new timezone on the next reload?" ) );
00584   int rc = KMessageBox::Yes;
00585   if ( isModified() ) {
00586     rc = KMessageBox::questionYesNo( 0, question,
00587                                        i18n("Save before applying timezones?"),
00588                                        KStdGuiItem::save(),
00589                                        KGuiItem(i18n("Apply Timezone Change on Next Reload")),
00590                                        "calendarLocalSaveBeforeTimezoneShift");
00591   }
00592   if ( rc == KMessageBox::Yes ) {
00593     reload( tz );
00594   }
00595 }