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tdepim/libkcal/calendar.cpp

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25 KiB

/*
This file is part of libkcal.
Copyright (c) 1998 Preston Brown <pbrown@kde.org>
Copyright (c) 2000-2004 Cornelius Schumacher <schumacher@kde.org>
Copyright (C) 2003-2004 Reinhold Kainhofer <reinhold@kainhofer.com>
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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
@file calendar.cpp
Provides the main "calendar" object class.
@author Preston Brown
@author Cornelius Schumacher
@author Reinhold Kainhofer
*/
#include <stdlib.h>
#include <kdebug.h>
#include <klocale.h>
#include "exceptions.h"
#include "calfilter.h"
#include "calendar.h"
using namespace KCal;
Calendar::Calendar( const TQString &timeZoneId )
{
mTimeZoneId = timeZoneId;
mLocalTime = false;
init();
}
void Calendar::init()
{
mNewObserver = false;
mObserversEnabled = true;
mModified = false;
// Setup default filter, which does nothing
mDefaultFilter = new CalFilter;
mFilter = mDefaultFilter;
mFilter->setEnabled( false );
// user information...
setOwner( Person( i18n( "Unknown Name" ), i18n( "unknown@nowhere" ) ) );
}
Calendar::~Calendar()
{
delete mDefaultFilter;
}
const Person &Calendar::getOwner() const
{
return mOwner;
}
void Calendar::setOwner( const Person &owner )
{
mOwner = owner;
setModified( true );
}
void Calendar::setTimeZoneId( const TQString &timeZoneId )
{
mTimeZoneId = timeZoneId;
mLocalTime = false;
setModified( true );
doSetTimeZoneId( timeZoneId );
}
TQString Calendar::timeZoneId() const
{
return mTimeZoneId;
}
void Calendar::setLocalTime()
{
mLocalTime = true;
mTimeZoneId = "";
setModified( true );
}
bool Calendar::isLocalTime() const
{
return mLocalTime;
}
void Calendar::setFilter( CalFilter *filter )
{
if ( filter ) {
mFilter = filter;
} else {
mFilter = mDefaultFilter;
}
}
CalFilter *Calendar::filter()
{
return mFilter;
}
TQStringList Calendar::categories()
{
Incidence::List rawInc( rawIncidences() );
TQStringList cats, thisCats;
// @TODO: For now just iterate over all incidences. In the future,
// the list of categories should be built when reading the file.
for ( Incidence::List::ConstIterator i = rawInc.constBegin();
i != rawInc.constEnd(); ++i ) {
thisCats = (*i)->categories();
for ( TQStringList::ConstIterator si = thisCats.constBegin();
si != thisCats.constEnd(); ++si ) {
if ( cats.find( *si ) == cats.end() ) {
cats.append( *si );
}
}
}
return cats;
}
Incidence::List Calendar::incidences( const TQDate &date )
{
return mergeIncidenceList( events( date ), todos( date ), journals( date ) );
}
Incidence::List Calendar::incidences()
{
return mergeIncidenceList( events(), todos(), journals() );
}
Incidence::List Calendar::rawIncidences()
{
return mergeIncidenceList( rawEvents(), rawTodos(), rawJournals() );
}
Event::List Calendar::sortEvents( Event::List *eventList,
EventSortField sortField,
SortDirection sortDirection )
{
Event::List eventListSorted;
Event::List tempList, t;
Event::List alphaList;
Event::List::Iterator sortIt;
Event::List::Iterator eit;
// Notice we alphabetically presort Summaries first.
// We do this so comparison "ties" stay in a nice order.
switch( sortField ) {
case EventSortUnsorted:
eventListSorted = *eventList;
break;
case EventSortStartDate:
alphaList = sortEvents( eventList, EventSortSummary, sortDirection );
for ( eit = alphaList.begin(); eit != alphaList.end(); ++eit ) {
sortIt = eventListSorted.begin();
if ( sortDirection == SortDirectionAscending ) {
while ( sortIt != eventListSorted.end() &&
(*eit)->dtStart() >= (*sortIt)->dtStart() ) {
++sortIt;
}
} else {
while ( sortIt != eventListSorted.end() &&
(*eit)->dtStart() < (*sortIt)->dtStart() ) {
++sortIt;
}
}
eventListSorted.insert( sortIt, *eit );
}
break;
case EventSortEndDate:
alphaList = sortEvents( eventList, EventSortSummary, sortDirection );
for ( eit = alphaList.begin(); eit != alphaList.end(); ++eit ) {
if ( (*eit)->hasEndDate() ) {
sortIt = eventListSorted.begin();
if ( sortDirection == SortDirectionAscending ) {
while ( sortIt != eventListSorted.end() &&
(*eit)->dtEnd() >= (*sortIt)->dtEnd() ) {
++sortIt;
}
} else {
while ( sortIt != eventListSorted.end() &&
(*eit)->dtEnd() < (*sortIt)->dtEnd() ) {
++sortIt;
}
}
} else {
// Keep a list of the Events without End DateTimes
tempList.append( *eit );
}
eventListSorted.insert( sortIt, *eit );
}
if ( sortDirection == SortDirectionAscending ) {
// Append the list of Events without End DateTimes
eventListSorted += tempList;
} else {
// Prepend the list of Events without End DateTimes
tempList += eventListSorted;
eventListSorted = tempList;
}
break;
case EventSortSummary:
for ( eit = eventList->begin(); eit != eventList->end(); ++eit ) {
sortIt = eventListSorted.begin();
if ( sortDirection == SortDirectionAscending ) {
while ( sortIt != eventListSorted.end() &&
(*eit)->summary() >= (*sortIt)->summary() ) {
++sortIt;
}
} else {
while ( sortIt != eventListSorted.end() &&
(*eit)->summary() < (*sortIt)->summary() ) {
++sortIt;
}
}
eventListSorted.insert( sortIt, *eit );
}
break;
}
return eventListSorted;
}
Event::List Calendar::events( const TQDate &date,
EventSortField sortField,
SortDirection sortDirection )
{
Event::List el = rawEventsForDate( date, sortField, sortDirection );
mFilter->apply( &el );
return el;
}
Event::List Calendar::events( const TQDateTime &qdt )
{
Event::List el = rawEventsForDate( qdt );
mFilter->apply( &el );
return el;
}
Event::List Calendar::events( const TQDate &start, const TQDate &end,
bool inclusive)
{
Event::List el = rawEvents( start, end, inclusive );
mFilter->apply( &el );
return el;
}
Event::List Calendar::events( EventSortField sortField,
SortDirection sortDirection )
{
Event::List el = rawEvents( sortField, sortDirection );
mFilter->apply( &el );
return el;
}
bool Calendar::addIncidence( Incidence *incidence )
{
Incidence::AddVisitor<Calendar> v( this );
return incidence->accept(v);
}
bool Calendar::deleteIncidence( Incidence *incidence )
{
if ( beginChange( incidence ) ) {
if (incidence->hasRecurrenceID()) {
// Delete this event's UID from the parent's list of children
Incidence *parentIncidence;
IncidenceList il = incidence->childIncidences();
IncidenceListIterator it;
it = il.begin();
parentIncidence = this->incidence(*it);
parentIncidence->deleteChildIncidence(incidence->uid());
}
else {
// Delete all children as well
IncidenceList il = incidence->childIncidences();
IncidenceListIterator it;
for ( it = il.begin(); it != il.end(); ++it ) {
deleteIncidence( this->incidence(*it) );
// Avoid a crash, reset the iterator every time the list is modified
it = il.begin();
}
}
Incidence::DeleteVisitor<Calendar> v( this );
bool result = incidence->accept( v );
endChange( incidence );
return result;
} else
return false;
}
/** Dissociate a single occurrence or all future occurrences from a recurring sequence.
The new incidence is returned, but not automatically inserted into the calendar,
which is left to the calling application */
Incidence *Calendar::dissociateOccurrence( Incidence *incidence, TQDate date,
bool single )
{
if ( !incidence || !incidence->doesRecur() )
return 0;
Incidence *newInc = incidence->clone();
newInc->recreate();
newInc->setHasRecurrenceID(false);
// newInc->setRecurrenceID(QString());
newInc->setRelatedTo( incidence );
Recurrence *recur = newInc->recurrence();
if ( single ) {
recur->clear();
} else {
// Adjust the recurrence for the future incidences. In particular
// adjust the "end after n occurrences" rules! "No end date" and "end by ..."
// don't need to be modified.
int duration = recur->duration();
if ( duration > 0 ) {
int doneduration = recur->durationTo( date.addDays(-1) );
if ( doneduration >= duration ) {
kdDebug(5850) << "The dissociated event already occurred more often "
<< "than it was supposed to ever occur. ERROR!" << endl;
recur->clear();
} else {
recur->setDuration( duration - doneduration );
}
}
}
// Adjust the date of the incidence
if ( incidence->type() == "Event" ) {
Event *ev = static_cast<Event *>( newInc );
TQDateTime start( ev->dtStart() );
int daysTo = start.date().daysTo( date );
ev->setDtStart( start.addDays( daysTo ) );
ev->setDtEnd( ev->dtEnd().addDays( daysTo ) );
} else if ( incidence->type() == "Todo" ) {
Todo *td = static_cast<Todo *>( newInc );
bool haveOffset = false;
int daysTo = 0;
if ( td->hasDueDate() ) {
TQDateTime due( td->dtDue() );
daysTo = due.date().daysTo( date );
td->setDtDue( due.addDays( daysTo ), true );
haveOffset = true;
}
if ( td->hasStartDate() ) {
TQDateTime start( td->dtStart() );
if ( !haveOffset )
daysTo = start.date().daysTo( date );
td->setDtStart( start.addDays( daysTo ) );
haveOffset = true;
}
}
recur = incidence->recurrence();
if ( recur ) {
if ( single ) {
recur->addExDate( date );
} else {
// Make sure the recurrence of the past events ends
// at the corresponding day
recur->setEndDate( date.addDays(-1) );
}
}
return newInc;
}
Incidence *Calendar::incidence( const TQString &uid )
{
Incidence *i = event( uid );
if ( i )
return i;
i = todo( uid );
if ( i )
return i;
i = journal( uid );
return i;
}
Incidence::List Calendar::incidencesFromSchedulingID( const TQString &UID )
{
Incidence::List result;
Incidence::List incidences = rawIncidences();
Incidence::List::iterator it = incidences.begin();
for ( ; it != incidences.end(); ++it )
if ( (*it)->schedulingID() == UID )
result.append( *it );
return result;
}
Incidence *Calendar::incidenceFromSchedulingID( const TQString &UID )
{
Incidence::List incidences = rawIncidences();
Incidence::List::iterator it = incidences.begin();
for ( ; it != incidences.end(); ++it )
if ( (*it)->schedulingID() == UID )
// Touchdown, and the crowd goes wild
return *it;
// Not found
return 0;
}
Todo::List Calendar::sortTodos( Todo::List *todoList,
TodoSortField sortField,
SortDirection sortDirection )
{
Todo::List todoListSorted;
Todo::List tempList, t;
Todo::List alphaList;
Todo::List::Iterator sortIt;
Todo::List::Iterator eit;
// Notice we alphabetically presort Summaries first.
// We do this so comparison "ties" stay in a nice order.
// Note that Todos may not have Start DateTimes nor due DateTimes.
switch( sortField ) {
case TodoSortUnsorted:
todoListSorted = *todoList;
break;
case TodoSortStartDate:
alphaList = sortTodos( todoList, TodoSortSummary, sortDirection );
for ( eit = alphaList.begin(); eit != alphaList.end(); ++eit ) {
if ( (*eit)->hasStartDate() ) {
sortIt = todoListSorted.begin();
if ( sortDirection == SortDirectionAscending ) {
while ( sortIt != todoListSorted.end() &&
(*eit)->dtStart() >= (*sortIt)->dtStart() ) {
++sortIt;
}
} else {
while ( sortIt != todoListSorted.end() &&
(*eit)->dtStart() < (*sortIt)->dtStart() ) {
++sortIt;
}
}
todoListSorted.insert( sortIt, *eit );
} else {
// Keep a list of the Todos without Start DateTimes
tempList.append( *eit );
}
}
if ( sortDirection == SortDirectionAscending ) {
// Append the list of Todos without Start DateTimes
todoListSorted += tempList;
} else {
// Prepend the list of Todos without Start DateTimes
tempList += todoListSorted;
todoListSorted = tempList;
}
break;
case TodoSortDueDate:
alphaList = sortTodos( todoList, TodoSortSummary, sortDirection );
for ( eit = alphaList.begin(); eit != alphaList.end(); ++eit ) {
if ( (*eit)->hasDueDate() ) {
sortIt = todoListSorted.begin();
if ( sortDirection == SortDirectionAscending ) {
while ( sortIt != todoListSorted.end() &&
(*eit)->dtDue() >= (*sortIt)->dtDue() ) {
++sortIt;
}
} else {
while ( sortIt != todoListSorted.end() &&
(*eit)->dtDue() < (*sortIt)->dtDue() ) {
++sortIt;
}
}
todoListSorted.insert( sortIt, *eit );
} else {
// Keep a list of the Todos without Due DateTimes
tempList.append( *eit );
}
}
if ( sortDirection == SortDirectionAscending ) {
// Append the list of Todos without Due DateTimes
todoListSorted += tempList;
} else {
// Prepend the list of Todos without Due DateTimes
tempList += todoListSorted;
todoListSorted = tempList;
}
break;
case TodoSortPriority:
alphaList = sortTodos( todoList, TodoSortSummary, sortDirection );
for ( eit = alphaList.begin(); eit != alphaList.end(); ++eit ) {
sortIt = todoListSorted.begin();
if ( sortDirection == SortDirectionAscending ) {
while ( sortIt != todoListSorted.end() &&
(*eit)->priority() >= (*sortIt)->priority() ) {
++sortIt;
}
} else {
while ( sortIt != todoListSorted.end() &&
(*eit)->priority() < (*sortIt)->priority() ) {
++sortIt;
}
}
todoListSorted.insert( sortIt, *eit );
}
break;
case TodoSortPercentComplete:
alphaList = sortTodos( todoList, TodoSortSummary, sortDirection );
for ( eit = alphaList.begin(); eit != alphaList.end(); ++eit ) {
sortIt = todoListSorted.begin();
if ( sortDirection == SortDirectionAscending ) {
while ( sortIt != todoListSorted.end() &&
(*eit)->percentComplete() >= (*sortIt)->percentComplete() ) {
++sortIt;
}
} else {
while ( sortIt != todoListSorted.end() &&
(*eit)->percentComplete() < (*sortIt)->percentComplete() ) {
++sortIt;
}
}
todoListSorted.insert( sortIt, *eit );
}
break;
case TodoSortSummary:
for ( eit = todoList->begin(); eit != todoList->end(); ++eit ) {
sortIt = todoListSorted.begin();
if ( sortDirection == SortDirectionAscending ) {
while ( sortIt != todoListSorted.end() &&
(*eit)->summary() >= (*sortIt)->summary() ) {
++sortIt;
}
} else {
while ( sortIt != todoListSorted.end() &&
(*eit)->summary() < (*sortIt)->summary() ) {
++sortIt;
}
}
todoListSorted.insert( sortIt, *eit );
}
break;
}
return todoListSorted;
}
Todo::List Calendar::todos( TodoSortField sortField,
SortDirection sortDirection )
{
Todo::List tl = rawTodos( sortField, sortDirection );
mFilter->apply( &tl );
return tl;
}
Todo::List Calendar::todos( const TQDate &date )
{
Todo::List el = rawTodosForDate( date );
mFilter->apply( &el );
return el;
}
Journal::List Calendar::sortJournals( Journal::List *journalList,
JournalSortField sortField,
SortDirection sortDirection )
{
Journal::List journalListSorted;
Journal::List::Iterator sortIt;
Journal::List::Iterator eit;
switch( sortField ) {
case JournalSortUnsorted:
journalListSorted = *journalList;
break;
case JournalSortDate:
for ( eit = journalList->begin(); eit != journalList->end(); ++eit ) {
sortIt = journalListSorted.begin();
if ( sortDirection == SortDirectionAscending ) {
while ( sortIt != journalListSorted.end() &&
(*eit)->dtStart() >= (*sortIt)->dtStart() ) {
++sortIt;
}
} else {
while ( sortIt != journalListSorted.end() &&
(*eit)->dtStart() < (*sortIt)->dtStart() ) {
++sortIt;
}
}
journalListSorted.insert( sortIt, *eit );
}
break;
case JournalSortSummary:
for ( eit = journalList->begin(); eit != journalList->end(); ++eit ) {
sortIt = journalListSorted.begin();
if ( sortDirection == SortDirectionAscending ) {
while ( sortIt != journalListSorted.end() &&
(*eit)->summary() >= (*sortIt)->summary() ) {
++sortIt;
}
} else {
while ( sortIt != journalListSorted.end() &&
(*eit)->summary() < (*sortIt)->summary() ) {
++sortIt;
}
}
journalListSorted.insert( sortIt, *eit );
}
break;
}
return journalListSorted;
}
Journal::List Calendar::journals( JournalSortField sortField,
SortDirection sortDirection )
{
Journal::List jl = rawJournals( sortField, sortDirection );
mFilter->apply( &jl );
return jl;
}
Journal::List Calendar::journals( const TQDate &date )
{
Journal::List el = rawJournalsForDate( date );
mFilter->apply( &el );
return el;
}
// When this is called, the todo have already been added to the calendar.
// This method is only about linking related todos
void Calendar::setupRelations( Incidence *forincidence )
{
if ( !forincidence ) return;
// kdDebug(5850) << "Calendar::setupRelations for incidence " << forincidence << " with UID " << forincidence->uid() << ", summary: " << forincidence->summary() << endl;
TQString uid = forincidence->uid();
// First, go over the list of orphans and see if this is their parent
while ( Incidence* i = mOrphans[ uid ] ) {
mOrphans.remove( uid );
i->setRelatedTo( forincidence );
forincidence->addRelation( i );
mOrphanUids.remove( i->uid() );
}
// Now see about this incidences parent
if ( !forincidence->relatedTo() && !forincidence->relatedToUid().isEmpty() ) {
// This incidence has a uid it is related to but is not registered to it yet
// Try to find it
Incidence* parent = incidence( forincidence->relatedToUid() );
if ( parent ) {
// Found it
forincidence->setRelatedTo( parent );
parent->addRelation( forincidence );
} else {
// Not found, put this in the mOrphans list
// Note that the mOrphans dict might have several entries with the same key! That are
// multiple children that wait for the parent incidence to be inserted.
mOrphans.insert( forincidence->relatedToUid(), forincidence );
mOrphanUids.insert( forincidence->uid(), forincidence );
}
}
}
// If a task with subtasks is deleted, move it's subtasks to the orphans list
void Calendar::removeRelations( Incidence *incidence )
{
if( !incidence ) {
kdDebug(5800) << "Warning: Calendar::removeRelations( 0 )!\n";
return;
}
// kdDebug(5850) << "Calendar::removeRelations for incidence " << forincidence << " with UID " << forincidence->uid() << ", summary: " << forincidence->summary() << endl;
TQString uid = incidence->uid();
Incidence::List relations = incidence->relations();
Incidence::List::ConstIterator it;
for ( it = relations.begin(); it != relations.end(); ++it ) {
Incidence *i = *it;
if ( !mOrphanUids.find( i->uid() ) ) {
mOrphans.insert( uid, i );
mOrphanUids.insert( i->uid(), i );
i->setRelatedTo( 0 );
i->setRelatedToUid( uid );
}
}
// If this incidence is related to something else, tell that about it
if ( incidence->relatedTo() )
incidence->relatedTo()->removeRelation( incidence );
// Remove this one from the orphans list
if ( mOrphanUids.remove( uid ) ) {
// This incidence is located in the orphans list - it should be removed
// Since the mOrphans dict might contain the same key (with different
// child incidence pointers!) multiple times, take care that we remove
// the correct one. So we need to remove all items with the given
// parent UID, and readd those that are not for this item. Also, there
// might be other entries with differnet UID that point to this
// incidence (this might happen when the relatedTo of the item is
// changed before its parent is inserted. This might happen with
// groupware servers....). Remove them, too
TQStringList relatedToUids;
// First get the list of all keys in the mOrphans list that point to the removed item
relatedToUids << incidence->relatedToUid();
for ( TQDictIterator<Incidence> it( mOrphans ); it.current(); ++it ) {
if ( it.current()->uid() == uid ) {
relatedToUids << it.currentKey();
}
}
// now go through all uids that have one entry that point to the incidence
for ( TQStringList::Iterator uidit = relatedToUids.begin();
uidit != relatedToUids.end(); ++uidit ) {
Incidence::List tempList;
// Remove all to get access to the remaining entries
while( Incidence* i = mOrphans[ *uidit ] ) {
mOrphans.remove( *uidit );
if ( i != incidence ) tempList.append( i );
}
// Readd those that point to a different orphan incidence
for ( Incidence::List::Iterator incit = tempList.begin();
incit != tempList.end(); ++incit ) {
mOrphans.insert( *uidit, *incit );
}
}
}
}
void Calendar::registerObserver( Observer *observer )
{
if( !mObservers.contains( observer ) )
mObservers.append( observer );
mNewObserver = true;
}
void Calendar::unregisterObserver( Observer *observer )
{
mObservers.remove( observer );
}
void Calendar::setModified( bool modified )
{
if ( modified != mModified || mNewObserver ) {
mNewObserver = false;
Observer *observer;
for ( observer = mObservers.first(); observer;
observer = mObservers.next() ) {
observer->calendarModified( modified, this );
}
mModified = modified;
}
}
void Calendar::incidenceUpdated( IncidenceBase *incidence )
{
incidence->setSyncStatus( Event::SYNCMOD );
incidence->setLastModified( TQDateTime::currentDateTime() );
// we should probably update the revision number here,
// or internally in the Event itself when certain things change.
// need to verify with ical documentation.
// The static_cast is ok as the CalendarLocal only observes Incidence objects
notifyIncidenceChanged( static_cast<Incidence *>( incidence ) );
setModified( true );
}
void Calendar::notifyIncidenceAdded( Incidence *i )
{
if ( !mObserversEnabled )
return;
Observer *observer;
for ( observer = mObservers.first(); observer;
observer = mObservers.next() ) {
observer->calendarIncidenceAdded( i );
}
}
void Calendar::notifyIncidenceChanged( Incidence *i )
{
if ( !mObserversEnabled )
return;
Observer *observer;
for ( observer = mObservers.first(); observer;
observer = mObservers.next() ) {
observer->calendarIncidenceChanged( i );
}
}
void Calendar::notifyIncidenceDeleted( Incidence *i )
{
if ( !mObserversEnabled )
return;
Observer *observer;
for ( observer = mObservers.first(); observer;
observer = mObservers.next() ) {
observer->calendarIncidenceDeleted( i );
}
}
void Calendar::customPropertyUpdated()
{
setModified( true );
}
void Calendar::setProductId( const TQString &productId )
{
mProductId = productId;
}
TQString Calendar::productId()
{
return mProductId;
}
Incidence::List Calendar::mergeIncidenceList( const Event::List &events,
const Todo::List &todos,
const Journal::List &journals )
{
Incidence::List incidences;
Event::List::ConstIterator it1;
for ( it1 = events.begin(); it1 != events.end(); ++it1 )
incidences.append( *it1 );
Todo::List::ConstIterator it2;
for ( it2 = todos.begin(); it2 != todos.end(); ++it2 )
incidences.append( *it2 );
Journal::List::ConstIterator it3;
for ( it3 = journals.begin(); it3 != journals.end(); ++it3 )
incidences.append( *it3 );
return incidences;
}
bool Calendar::beginChange( Incidence * )
{
return true;
}
bool Calendar::endChange( Incidence * )
{
return true;
}
void Calendar::setObserversEnabled( bool enabled )
{
mObserversEnabled = enabled;
}
#include "calendar.moc"