list sort fix

4 files changed, 29 insertions, 1 deletions

diff --git a/libkcal/incidence.cpp b/libkcal/incidence.cpp
index 39c14f5..fe9f854 100644
--- a/libkcal/incidence.cpp
+++ b/libkcal/incidence.cpp
@@ -153,397 +153,410 @@ bool Incidence::isAnniversary() const
 }
 
 bool Incidence::hasRecurrenceID() const
 {
     return mHasRecurrenceID;
 }
 
 void Incidence::setHasRecurrenceID( bool b )
 {
     mHasRecurrenceID = b;
 }
    
 void Incidence::setRecurrenceID(QDateTime d)
 {
     mRecurrenceID = d;
     mHasRecurrenceID = true;
     updated(); 
 }
 QDateTime Incidence::recurrenceID () const
 {
     return mRecurrenceID;
 }
 
 bool Incidence::cancelled() const
 {
     return mCancelled;
 }
 void Incidence::setCancelled( bool b )
 {
     mCancelled = b;
     updated();
 }
 bool Incidence::hasStartDate() const
 {
   return mHasStartDate;
 }
 
 void Incidence::setHasStartDate(bool f)
 {
   if (mReadOnly) return;
   mHasStartDate = f;
   updated();
 }
 
 // A string comparison that considers that null and empty are the same
 static bool stringCompare( const QString& s1, const QString& s2 )
 {
     if ( s1.isEmpty() && s2.isEmpty() )
         return true;
     return s1 == s2;
 }
 
 bool KCal::operator==( const Incidence& i1, const Incidence& i2 )
 {
   
     if( i1.alarms().count() != i2.alarms().count() ) {
         return false; // no need to check further
     }
     if ( i1.alarms().count() > 0 ) {
         if ( !( *(i1.alarms().first()) == *(i2.alarms().first())) ) 
             {
             qDebug("alarm not equal ");
             return false;
         }
     }
 #if 0
     QPtrListIterator<Alarm> a1( i1.alarms() );
     QPtrListIterator<Alarm> a2( i2.alarms() );
     for( ; a1.current() && a2.current(); ++a1, ++a2 ) {
         if( *a1.current() == *a2.current() ) {
             continue;
         }
         else {
             return false;
         }
     }
 #endif
   
     if ( i1.hasRecurrenceID() == i2.hasRecurrenceID() ) {
         if ( i1.hasRecurrenceID() ) {
             if ( i1.recurrenceID() != i2.recurrenceID() )
                 return false;
         }
 
     } else {
         return false;
     }
 
     if ( ! operator==( (const IncidenceBase&)i1, (const IncidenceBase&)i2 ) )
         return false;
     if ( i1.hasStartDate() == i2.hasStartDate() ) {
         if ( i1.hasStartDate() ) {
             if ( i1.dtStart() != i2.dtStart() )
                 return false;
         }
     } else {
         return false;
     }
     if ( i1.mRecurrence != 0 && i2.mRecurrence != 0 ) {
         if (!( *i1.mRecurrence == *i2.mRecurrence) ) {
             //qDebug("recurrence is NOT equal ");
             return false;
         }
     } else {
         // one ( or both ) recurrence is 0
         if ( i1.mRecurrence == 0 ) {
             if ( i2.mRecurrence != 0 && i2.mRecurrence->doesRecur() != Recurrence::rNone )
                 return false;
         } else {
             // i1.mRecurrence != 0
             // i2.mRecurrence == 0
             if ( i1.mRecurrence->doesRecur() != Recurrence::rNone )
                 return false;
         }
     }
    
     return
         //  i1.created() == i2.created() &&
         stringCompare( i1.description(), i2.description() ) &&
         stringCompare( i1.summary(), i2.summary() ) &&
         i1.categories() == i2.categories() &&
         // no need to compare mRelatedTo
         stringCompare( i1.relatedToUid(), i2.relatedToUid() ) &&
         //      i1.relations() == i2.relations() &&
         i1.exDates() == i2.exDates() &&
         i1.attachments() == i2.attachments() &&
         i1.resources() == i2.resources() &&
         i1.secrecy() == i2.secrecy() &&
         i1.priority() == i2.priority() &&
         i1.cancelled() == i2.cancelled() &&
         stringCompare( i1.location(), i2.location() );
 }
 
 Incidence* Incidence::recreateCloneException( QDate d  )
 {
     Incidence* newInc = clone();
     newInc->recreate();
     if ( doesRecur() ) {
         addExDate( d );
         newInc->recurrence()->unsetRecurs();
         if ( typeID() == eventID ) {
             int len = dtStart().secsTo( ((Event*)this)->dtEnd());
             QTime tim = dtStart().time();
             newInc->setDtStart( QDateTime(d, tim) );
             ((Event*)newInc)->setDtEnd( newInc->dtStart().addSecs( len ) );
         } else {
             int len = dtStart().secsTo( ((Todo*)this)->dtDue());
             QTime tim = ((Todo*)this)->dtDue().time();
             ((Todo*)newInc)->setDtDue( QDateTime(d, tim) );
             ((Todo*)newInc)->setDtStart( ((Todo*)newInc)->dtDue().addSecs( -len ) );
             ((Todo*)this)->setRecurDates();
         }
         newInc->setExDates( DateList () );
     }
     return newInc;
 }
 
 void Incidence::recreate()
 {
   setCreated(QDateTime::currentDateTime());
 
   setUid(CalFormat::createUniqueId());
 
   setRevision(0);
   setIDStr( ":" );
   setLastModified(QDateTime::currentDateTime());
 }
 void Incidence::cloneRelations( Incidence * newInc )
 {
     // newInc is already a clone of this incidence
     Incidence * inc;
     Incidence * cloneInc;
     QPtrList<Incidence> Relations = relations();
     for (inc=Relations.first();inc;inc=Relations.next()) {
         cloneInc = inc->clone();
         cloneInc->recreate();
         cloneInc->setRelatedTo( newInc );
         inc->cloneRelations( cloneInc );
     } 
 }
 void Incidence::setReadOnly( bool readOnly )
 {
   IncidenceBase::setReadOnly( readOnly );
   if ( mRecurrence )
       mRecurrence->setRecurReadOnly( readOnly);
 }
 void Incidence::setLastModifiedSubInvalid()
 {
     mLastModifiedSub = QDateTime();
     if ( mRelatedTo )
         mRelatedTo->setLastModifiedSubInvalid();
 }
+QString Incidence::lastModifiedSubSortKey() const
+{
+    if ( mLastModifiedSubSortKey.isEmpty() )
+        return lastModifiedSortKey();
+    return mLastModifiedSubSortKey;
+}
 QDateTime Incidence::lastModifiedSub()
 {
     if ( !mRelations.count() )
         return lastModified();
     if ( mLastModifiedSub.isValid() )
         return mLastModifiedSub;
     mLastModifiedSub = lastModified();
     Incidence * inc;
     QPtrList<Incidence> Relations = relations();
     for (inc=Relations.first();inc;inc=Relations.next()) {
         if ( inc->lastModifiedSub() > mLastModifiedSub )
             mLastModifiedSub = inc->lastModifiedSub();
     }
+    mLastModifiedSubSortKey.sprintf("%04d%02d%02d%02d%02d%02d",
+                                    mLastModifiedSub.date().year(),
+                                    mLastModifiedSub.date().month(),
+                                    mLastModifiedSub.date().day(),
+                                    mLastModifiedSub.time().hour(),
+                                    mLastModifiedSub.time().minute(),
+                                    mLastModifiedSub.time().second() );
     return mLastModifiedSub;
 }
 void Incidence::setCreated(QDateTime created)
 {
   if (mReadOnly) return;
   mCreated = getEvenTime(created);
 }
 
 QDateTime Incidence::created() const
 {
   return mCreated;
 }
 
 void Incidence::setRevision(int rev)
 {
   if (mReadOnly) return;
   mRevision = rev;
 
   updated();
 }
 
 int Incidence::revision() const
 {
   return mRevision;
 }
 
 void Incidence::setDtStart(const QDateTime &dtStart)
 {
 
   QDateTime  dt = getEvenTime(dtStart);
 
   if ( mRecurrence )
       mRecurrence->setRecurStart( dt);
   IncidenceBase::setDtStart( dt );
 }
 
 void Incidence::setDescription(const QString &description)
 {
   if (mReadOnly) return;
   mDescription = description;
   updated();
 }
 
 QString Incidence::description() const
 {
   return mDescription;
 }
 
 
 void Incidence::setSummary(const QString &summary)
 {
   if (mReadOnly) return;
   mSummary = summary;
   updated();
 }
 
 QString Incidence::summary() const
 {
   return mSummary;
 }
 void Incidence::checkCategories()
 {
     mHoliday =  mCategories.contains("Holiday") || mCategories.contains(i18n("Holiday"));
     mBirthday =  mCategories.contains("Birthday") || mCategories.contains(i18n("Birthday"));
     mAnniversary =  mCategories.contains("Anniversary") || mCategories.contains(i18n("Anniversary"));
 }
 
 void Incidence::addCategories(const QStringList &categories, bool addToRelations ) //addToRelations = false
 {
     if (mReadOnly) return;
     int i;
     for( i = 0; i < categories.count(); ++i ) {
         if (  !mCategories.contains (categories[i]))
             mCategories.append( categories[i] );
     }
     checkCategories();
     updated();
     if ( addToRelations ) {
         Incidence * inc;
         QPtrList<Incidence> Relations = relations();
         for (inc=Relations.first();inc;inc=Relations.next()) {
             inc->addCategories( categories, true );
         } 
     }
 }
 
 void Incidence::setCategories(const QStringList &categories, bool setForRelations ) //setForRelations = false
 {
   if (mReadOnly) return;
   mCategories = categories;
   checkCategories();
   updated();
   if ( setForRelations ) {
       Incidence * inc;
       QPtrList<Incidence> Relations = relations();
       for (inc=Relations.first();inc;inc=Relations.next()) {
           inc->setCategories( categories, true );
       } 
   }
 }
 
 // TODO: remove setCategories(QString) function
 void Incidence::setCategories(const QString &catStr)
 {
   if (mReadOnly) return;
   mCategories.clear();
 
   if (catStr.isEmpty()) return;
 
   mCategories = QStringList::split(",",catStr);
 
   QStringList::Iterator it;
   for(it = mCategories.begin();it != mCategories.end(); ++it) {
     *it = (*it).stripWhiteSpace();
   }
   checkCategories();
   updated();
 }
 // using this makes filtering 3 times faster
 QStringList* Incidence::categoriesP()
 {
   return &mCategories;
 }
 
 QStringList Incidence::categories() const
 {
   return mCategories;
 }
 
 QString Incidence::categoriesStr()
 {
   return mCategories.join(",");
 }
 QString Incidence::categoriesStrWithSpace()
 {
   return mCategories.join(", ");
 }
 
 void Incidence::setRelatedToUid(const QString &relatedToUid)
 {
   if (mReadOnly) return;
   mRelatedToUid = relatedToUid;
 }
 void Incidence::clearRelations()
 {
     mRelatedTo = 0;
     mRelations.clear();
 }
 QString Incidence::relatedToUid() const
 {
   return mRelatedToUid;
 }
 
 void Incidence::setRelatedTo(Incidence *relatedTo)
 {
     //qDebug("Incidence::setRelatedTo %d ", relatedTo);
     //qDebug("setRelatedTo(Incidence *relatedTo) %s %s", summary().latin1(), relatedTo->summary().latin1() );
   if (mReadOnly || mRelatedTo == relatedTo) return;
   if(mRelatedTo) {
       // updated();
     mRelatedTo->removeRelation(this);
   }
   mRelatedTo = relatedTo;
   if (mRelatedTo)  {
       mRelatedTo->addRelation(this);
       mRelatedToUid = mRelatedTo->uid();
   } else {
       mRelatedToUid = "";
   }
 }
 
 Incidence *Incidence::relatedTo() const
 {
   return mRelatedTo;
 }
 
 QPtrList<Incidence> Incidence::relations() const
 {
   return mRelations;
 }
 
 void Incidence::addRelationsToList(QPtrList<Incidence> *rel)
 {
     Incidence* inc;
     QPtrList<Incidence> Relations = relations();
     for (inc=Relations.first();inc;inc=Relations.next()) {
         inc->addRelationsToList( rel );
     } 
     if ( rel->findRef( this ) == -1 ) 
         rel->append( this );
 }
 
diff --git a/libkcal/incidence.h b/libkcal/incidence.h
index eef9e64..dc49640 100644
--- a/libkcal/incidence.h
+++ b/libkcal/incidence.h
@@ -90,235 +90,237 @@ class Incidence : public IncidenceBase
         bool visit( Event *e ) { return mResource->addEvent( e ); }
         bool visit( Todo *t ) { return mResource->addTodo( t ); }
         bool visit( Journal *j ) { return mResource->addJournal( j ); }
 
       private:
         T *mResource;
     };
 
     /** enumeration for describing an event's secrecy. */
     enum { SecrecyPublic = 0, SecrecyPrivate = 1, SecrecyConfidential = 2 };
     typedef ListBase<Incidence> List;
     Incidence();
     Incidence(const Incidence &);
     ~Incidence();
 
     /**
       Accept IncidenceVisitor. A class taking part in the visitor mechanism has to
       provide this implementation:
       <pre>
         bool accept(Visitor &v) { return v.visit(this); }
       </pre>
     */
     virtual bool accept(Visitor &) { return false; }
 
     virtual Incidence *clone() = 0;
     virtual void cloneRelations( Incidence * );
     void addRelationsToList(QPtrList<Incidence> *rel);
     void clearRelations();
     virtual QDateTime getNextAlarmDateTime( bool * ok, int * offset, QDateTime start_dt ) const = 0;
     void setReadOnly( bool );
 
     /**
       Recreate event. The event is made a new unique event, but already stored
       event information is preserved. Sets uniquie id, creation date, last
       modification date and revision number.
     */
     void recreate();
     Incidence*  recreateCloneException(QDate);
 
     /** set creation date */
     void setCreated(QDateTime);
     /** return time and date of creation. */
     QDateTime created() const;
 
     /** set the number of revisions this event has seen */
     void setRevision(int rev);
     /** return the number of revisions this event has seen */
     int revision() const;
 
     /** Set starting date/time. */
     virtual void setDtStart(const QDateTime &dtStart);
     /** Return the incidence's ending date/time as a QDateTime. */
     virtual QDateTime dtEnd() const  { return QDateTime(); }
 
     /** sets the event's lengthy description. */
     void setDescription(const QString &description);
     /** returns a reference to the event's description. */
     QString description() const;
 
     /** sets the event's short summary. */
     void setSummary(const QString &summary);
     /** returns a reference to the event's summary. */
     QString summary() const;
 
     /** set event's applicable categories */
     void setCategories(const QStringList &categories, bool setForRelations = false);
     void addCategories(const QStringList &categories, bool addToRelations = false);
     /** set event's categories based on a comma delimited string */
     void setCategories(const QString &catStr);
     /** return categories in a list */
     QStringList categories() const;
     QStringList* categoriesP();
     /** return categories as a comma separated string */
     QString categoriesStr();
     QString categoriesStrWithSpace();
 
     /** point at some other event to which the event relates. This function should
      *  only be used when constructing a calendar before the related Event
      *  exists. */
     void setRelatedToUid(const QString &);
     /** what event does this one relate to? This function should
      *  only be used when constructing a calendar before the related Event
      *  exists. */
     QString relatedToUid() const;
     /** point at some other event to which the event relates */
     void setRelatedTo(Incidence *relatedTo);
     /** what event does this one relate to? */
     Incidence *relatedTo() const;
     /** All events that are related to this event */
     QPtrList<Incidence> relations() const;
     /** Add an event which is related to this event */
     void addRelation(Incidence *);
     /** Remove event that is related to this event */
     void removeRelation(Incidence *);
 
     /** returns the list of dates which are exceptions to the recurrence rule */
     DateList exDates() const;
     /** sets the list of dates which are exceptions to the recurrence rule */
     void setExDates(const DateList &_exDates);
     void setExDates(const char *dates);
     /** Add a date to the list of exceptions of the recurrence rule. */
     void addExDate(const QDate &date);
 
     /** returns true if there is an exception for this date in the recurrence
      rule set, or false otherwise. */
     bool isException(const QDate &qd) const;
 
     /** add attachment to this event */
     void addAttachment(Attachment *attachment);
     /** remove and delete a specific attachment */
     void deleteAttachment(Attachment *attachment);
     /** remove and delete all attachments with this mime type */
     void deleteAttachments(const QString& mime);
     /** return list of all associated attachments */
     QPtrList<Attachment> attachments() const;
     /** find a list of attachments with this mime type */
     QPtrList<Attachment> attachments(const QString& mime) const;
 
     /** sets the event's status the value specified.  See the enumeration
      * above for possible values. */
     void setSecrecy(int);
     /** return the event's secrecy. */
     int secrecy() const;
     /** return the event's secrecy in string format. */
     QString secrecyStr() const;
     /** return list of all availbale secrecy classes */
     static QStringList secrecyList();
     /** return human-readable name of secrecy class */
     static QString secrecyName(int);
 
     /** returns TRUE if the date specified is one on which the event will
      * recur. */
     bool recursOn(const QDate &qd) const;
 
     // VEVENT and VTODO, but not VJOURNAL (move to EventBase class?):
 
     /** set resources used, such as Office, Car, etc. */
     void setResources(const QStringList &resources);
     /** return list of current resources */
     QStringList resources() const;
 
     /** set the event's priority, 0 is undefined, 1 highest (decreasing order) */
     void setPriority(int priority);
     /** get the event's priority */
     int priority() const;
 
     /** All alarms that are associated with this incidence */
     QPtrList<Alarm> alarms() const;
     /** Create a new alarm which is associated with this incidence */
     Alarm* newAlarm();
     /** Add an alarm which is associated with this incidence */
     void addAlarm(Alarm*);
     /** Remove an alarm that is associated with this incidence */
     void removeAlarm(Alarm*);
     /** Remove all alarms that are associated with this incidence */
     void clearAlarms();
     /** return whether any alarm associated with this incidence is enabled */
     bool isAlarmEnabled() const;
 
     /**
       Return the recurrence rule associated with this incidence. If there is
       none, returns an appropriate (non-0) object.
     */
     Recurrence *recurrence();
     void setRecurrence(Recurrence * r);
     /**
       Forward to Recurrence::doesRecur().
     */
     ushort doesRecur() const;
 
     /** set the event's/todo's location. Do _not_ use it with journal */
     void setLocation(const QString &location);
     /** return the event's/todo's location. Do _not_ use it with journal */
     QString location() const;  
    /** returns TRUE or FALSE depending on whether the todo has a start date */
     bool hasStartDate() const;
     /** sets the event's hasStartDate value. */
     void setHasStartDate(bool f);
     QDateTime getNextOccurence( const QDateTime& dt, bool* yes ) const;
     bool cancelled() const;
     void setCancelled( bool b );
     
     bool hasRecurrenceID() const;
     void setHasRecurrenceID( bool b );
     
     void setRecurrenceID(QDateTime);
     QDateTime recurrenceID () const;
     QDateTime dtStart() const;
     bool isHoliday() const;
     bool isBirthday() const;
     bool isAnniversary() const;
     QDateTime lastModifiedSub();
+    QString lastModifiedSubSortKey() const;
     QString recurrenceText() const;
     void setLastModifiedSubInvalid();
     
     virtual QString durationText();
     QString durationText4Time( int secs );
     Recurrence *mRecurrence;
 protected:
     QPtrList<Alarm> mAlarms;
     QPtrList<Incidence> mRelations;
     QDateTime mRecurrenceID;
     bool mHasRecurrenceID;
   private:
     void checkCategories();
+    QString mLastModifiedSubSortKey;
     bool mHoliday, mBirthday, mAnniversary;
     int mRevision;
     bool mCancelled;
 
     // base components of jounal, event and todo
     QDateTime mCreated;
     QDateTime mLastModifiedSub;
     QString mDescription;
     QString mSummary;
     QStringList mCategories;
     Incidence *mRelatedTo;
     QString mRelatedToUid;
     DateList mExDates;
     QPtrList<Attachment> mAttachments;
     QStringList mResources;
     bool mHasStartDate;                  // if todo has associated start date
 
     int mSecrecy;
     int mPriority;                        // 1 = highest, 2 = less, etc.
 
     //QPtrList<Alarm> mAlarms;
     
     QString mLocation;
 };
 
 bool operator==( const Incidence&, const Incidence& );
 
 }
 
 #endif
diff --git a/libkcal/incidencebase.cpp b/libkcal/incidencebase.cpp
index 022dead..cfef973 100644
--- a/libkcal/incidencebase.cpp
+++ b/libkcal/incidencebase.cpp
@@ -4,395 +4,406 @@
 
     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.
 */
 
 #include <kglobal.h>
 #include <klocale.h>
 #include <kdebug.h>
 #include <kidmanager.h>
 
 #include "calformat.h"
 #include "syncdefines.h"
 
 #include "incidencebase.h"
 
 using namespace KCal;
 
 IncidenceBase::IncidenceBase() :
   mReadOnly(false), mFloats(true), mDuration(0), mHasDuration(false),
   mPilotId(0), mSyncStatus(SYNCMOD)
 {
   blockLastModified = false;
   setUid(CalFormat::createUniqueId());
   mOrganizer = "";
   mFloats = false;
   mDuration = 0;
   mHasDuration = false;
   mPilotId = 0;
   mExternalId = ":";
   mTempSyncStat =  SYNC_TEMPSTATE_INITIAL;
   mSyncStatus = 0;
   mAttendees.setAutoDelete( true );
   mCalEnabled = true;
   mAlarmEnabled = true;
   mCalID = 0;
 }
 
 IncidenceBase::IncidenceBase(const IncidenceBase &i) :
   CustomProperties( i )
 {
 
   blockLastModified = false;
   mReadOnly = i.mReadOnly;
   mDtStart = i.mDtStart;
   mDuration = i.mDuration;
   mHasDuration = i.mHasDuration;
   mOrganizer = i.mOrganizer;
   mUid = i.mUid;
   mCalEnabled = i.mCalEnabled;
   mAlarmEnabled = i.mAlarmEnabled;
   mCalID = i.mCalID;
   QPtrList<Attendee> attendees = i.attendees();
   for( Attendee *a = attendees.first(); a; a = attendees.next() ) {
     mAttendees.append( new Attendee( *a ) );
   }
   mFloats = i.mFloats;
   mLastModified = i.mLastModified;
   mPilotId = i.mPilotId;
   mTempSyncStat = i.mTempSyncStat;
   mSyncStatus = i.mSyncStatus;
   mExternalId = i.mExternalId;
   // The copied object is a new one, so it isn't observed by the observer
   // of the original object.
   mObservers.clear();
   
   mAttendees.setAutoDelete( true );
 }
 
 IncidenceBase::~IncidenceBase()
 {
 }
 
 
 bool KCal::operator==( const IncidenceBase& i1, const IncidenceBase& i2 )
 {
     // do not compare mSyncStatus and mExternalId 
     if( i1.attendees().count() != i2.attendees().count() ) {
         return false; // no need to check further
     }
     if ( i1.attendees().count() > 0 ) {
         Attendee * a1 = i1.attendees().first(), *a2 =i2.attendees().first() ;
         while ( a1 ) {
             if ( !( (*a1) == (*a2)) ) 
                 {
                     //qDebug("Attendee not equal ");
                     return false;
                 }
             a1 = i1.attendees().next();
             a2 = i2.attendees().next();
         }
     }
     //if ( i1.dtStart() != i2.dtStart() )
     //  return false;
 #if 0
     qDebug("1 %d ",i1.doesFloat() == i2.doesFloat() );
     qDebug("1 %d ",i1.duration() == i2.duration() );
     qDebug("3 %d ",i1.hasDuration() == i2.hasDuration() );
     qDebug("1 %d ",i1.pilotId() == i2.pilotId() );
     qDebug("1 %d %d %d",i1.syncStatus() == i2.syncStatus() , i1.syncStatus(),i2.syncStatus() );
     qDebug("6 %d ",i1.organizer() == i2.organizer() );
   
 #endif
     if ( i1.hasDuration() == i2.hasDuration() ) {
         if ( i1.hasDuration() ) {
             if ( i1.duration() != i2.duration() )
                 return false;
         }
     } else {
         return false;
     }
 
     return ( i1.organizer() == i2.organizer() &&
              // i1.uid() == i2.uid() &&
              // Don't compare lastModified, otherwise the operator is not
              // of much use. We are not comparing for identity, after all.
              i1.doesFloat() == i2.doesFloat() &&
              i1.pilotId() == i2.pilotId() );// &&  i1.syncStatus() == i2.syncStatus() );
     // no need to compare mObserver
 }
 
   
 QDateTime IncidenceBase::getEvenTime( QDateTime dt )
 {
     QTime t =  dt.time();
     dt.setTime( QTime (t.hour (), t.minute (), t.second () )  );
     return dt;
 }     
 
 bool IncidenceBase::isTagged() const
 {
     return mIsTagged;
 }
 void IncidenceBase::setTagged( bool b)
 {
     mIsTagged = b;
 }
 void IncidenceBase::setCalID( int id )
 {
     if ( mCalID > 0 ) {
         blockLastModified = true;
         updated();
         blockLastModified = false;
     }
     mCalID = id;
 }
 int IncidenceBase::calID() const
 {
     return mCalID;
 }
 void IncidenceBase::setCalEnabled( bool b )
 {
     mCalEnabled = b;
 }
 bool IncidenceBase::calEnabled() const
 {
     return mCalEnabled;
 }
 
 void IncidenceBase::setAlarmEnabled( bool b )
 {
     mAlarmEnabled = b;
 }
 bool IncidenceBase::alarmEnabled() const
 {
     return mAlarmEnabled;
 }
 
 
 void IncidenceBase::setUid(const QString &uid)
 {
   mUid = uid;
   updated();
 }
 
 QString IncidenceBase::uid() const
 {
   return mUid;
 }
 void IncidenceBase::setLastModifiedSubInvalid()
 {
-
+    // virtual method
 }
 void IncidenceBase::setLastModified(const QDateTime &lm)
 {
     if ( blockLastModified ) return;
   // DON'T! updated() because we call this from
   // Calendar::updateEvent().
   mLastModified = getEvenTime(lm);
+  mLastModifiedKey.sprintf("%04d%02d%02d%02d%02d%02d",
+                           mLastModified.date().year(),
+                           mLastModified.date().month(),
+                           mLastModified.date().day(),
+                           mLastModified.time().hour(),
+                           mLastModified.time().minute(),
+                           mLastModified.time().second() );
   setLastModifiedSubInvalid();
   //qDebug("IncidenceBase::setLastModified %s ",lm.toString().latin1());
 }
+QString IncidenceBase::lastModifiedSortKey() const
+{  
+    return mLastModifiedKey;
+}
 
 QDateTime IncidenceBase::lastModified() const
 {
   return mLastModified;
 }
 
 void IncidenceBase::setOrganizer(const QString &o)
 {
   // we don't check for readonly here, because it is
   // possible that by setting the organizer we are changing
   // the event's readonly status...
   mOrganizer = o;
   if (mOrganizer.left(7).upper() == "MAILTO:")
     mOrganizer = mOrganizer.remove(0,7);
 
   updated();
 }
 
 QString IncidenceBase::organizer() const
 {
   return mOrganizer;
 }
 
 void IncidenceBase::setReadOnly( bool readOnly )
 {
   mReadOnly = readOnly;
 }
 
 void IncidenceBase::setDtStart(const QDateTime &dtStart)
 {
 //  if (mReadOnly) return;
   mDtStart = getEvenTime(dtStart);
   updated();
 }
 
 
 QDateTime IncidenceBase::dtStart() const
 {
   return mDtStart;
 }
 
 QString IncidenceBase::dtStartTimeStr() const
 {
   return KGlobal::locale()->formatTime(dtStart().time());
 }
 
 QString IncidenceBase::dtStartDateStr(bool shortfmt) const
 {
   return KGlobal::locale()->formatDate(dtStart().date(),shortfmt);
 }
 
 QString IncidenceBase::dtStartStr(bool shortfmt) const
 {
     if ( doesFloat() )
         return KGlobal::locale()->formatDate(dtStart().date(),shortfmt);
     return KGlobal::locale()->formatDateTime(dtStart(), shortfmt);
 }
 
 
 bool IncidenceBase::doesFloat() const
 {
   return mFloats;
 }
 
 void IncidenceBase::setFloats(bool f)
 {
   if (mReadOnly) return;
   mFloats = f;
   updated();
 }
 
 
 bool IncidenceBase::addAttendee(Attendee *a, bool doupdate)
 {
   if (mReadOnly) return false;
   if (a->name().left(7).upper() == "MAILTO:")
     a->setName(a->name().remove(0,7));
 
   QPtrListIterator<Attendee> qli(mAttendees);
   
   qli.toFirst();
   while (qli) {
       if (*qli.current() == *a)
           return false;
       ++qli;
   }
   mAttendees.append(a);
   if (doupdate) updated();
   return true;
 }
 
 #if 0
 void IncidenceBase::removeAttendee(Attendee *a)
 {
   if (mReadOnly) return;
   mAttendees.removeRef(a);
   updated();
 }
 
 void IncidenceBase::removeAttendee(const char *n)
 {
   Attendee *a;
 
   if (mReadOnly) return;
   for (a = mAttendees.first(); a; a = mAttendees.next())
     if (a->getName() == n) {
       mAttendees.remove();
       break;
     }
 }
 #endif
 
 void IncidenceBase::clearAttendees()
 {
   if (mReadOnly) return;
   mAttendees.clear();
 }
 
 #if 0
 Attendee *IncidenceBase::getAttendee(const char *n) const
 {
   QPtrListIterator<Attendee> qli(mAttendees);
 
   qli.toFirst();
   while (qli) {
     if (qli.current()->getName() == n)
       return qli.current();
     ++qli;
   }
   return 0L;
 }
 #endif
 
 Attendee *IncidenceBase::attendeeByMail(const QString &email)
 {
   QPtrListIterator<Attendee> qli(mAttendees);
 
   qli.toFirst();
   while (qli) {
       if (qli.current()->email().lower() == email.lower())
       return qli.current();
     ++qli;
   }
   return 0L;
 }
 
 Attendee *IncidenceBase::attendeeByMails(const QStringList &emails, const QString& email)
 {
   QPtrListIterator<Attendee> qli(mAttendees);
 
   QStringList mails = emails;
   if (!email.isEmpty()) {
     mails.append(email);
   }
   qli.toFirst();
   while (qli) {
     for ( QStringList::Iterator it = mails.begin(); it != mails.end(); ++it ) {
         if (qli.current()->email().lower() == (*it).lower())
         return qli.current();
      }
 
     ++qli;
   }
   return 0L;
 }
 
 void IncidenceBase::setDuration(int seconds)
 {
   mDuration = seconds;
   setHasDuration(true);
 }
 
 int IncidenceBase::duration() const
 {
   return mDuration;
 }
 
 void IncidenceBase::setHasDuration(bool b)
 {
   mHasDuration = b;
 }
 
 bool IncidenceBase::hasDuration() const
 {
   return mHasDuration;
 }
 
 void IncidenceBase::setSyncStatus(int stat)
 {
   if (mReadOnly) return;
   mSyncStatus = stat;
 }
diff --git a/libkcal/incidencebase.h b/libkcal/incidencebase.h
index 665c1f6..444d4c4 100644
--- a/libkcal/incidencebase.h
+++ b/libkcal/incidencebase.h
@@ -1,187 +1,189 @@
 /*
     This file is part of libkcal.
     Copyright (c) 2001 Cornelius Schumacher <schumacher@kde.org>
 
     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_INCIDENCEBASE_H
 #define KCAL_INCIDENCEBASE_H
 //
 // Incidence - base class of calendaring components
 //
 
 #include <qdatetime.h>
 #include <qstringlist.h>
 #include <qvaluelist.h>
 #include <qptrlist.h>
 
 #include "customproperties.h"
 #include "attendee.h"
 
 namespace KCal {
 
 typedef QValueList<QDate> DateList;
  enum IncTypeID { eventID,todoID,journalID,freebusyID };
 
 /**
   This class provides the base class common to all calendar components.
 */
 class IncidenceBase : public CustomProperties
 {
   public:
     class Observer {
       public:
         virtual void incidenceUpdated( IncidenceBase * ) = 0;
     };
 
     IncidenceBase();
     IncidenceBase(const IncidenceBase &);
     virtual ~IncidenceBase();
 
     virtual QCString type() const = 0;
     virtual  IncTypeID typeID() const = 0;
 
     /** Set the unique id for the event */
     void setUid(const QString &);
     /** Return the unique id for the event */
     QString uid() const;
 
     /** Sets the time the incidence was last modified. */
     void setLastModified(const QDateTime &lm);
     /** Return the time the incidence was last modified. */
     QDateTime lastModified() const;
+    QString lastModifiedSortKey() const;
 
     /** sets the organizer for the event */
     void setOrganizer(const QString &o);
     QString organizer() const;
 
     /** Set readonly status. */
     virtual void setReadOnly( bool );
     /** Return if the object is read-only. */
     bool isReadOnly() const { return mReadOnly; }
 
     /** for setting the event's starting date/time with a QDateTime. */
     virtual void setDtStart(const QDateTime &dtStart);
     /** returns an event's starting date/time as a QDateTime. */
     virtual QDateTime dtStart() const;
     /** returns an event's starting time as a string formatted according to the
      users locale settings */
     QString dtStartTimeStr() const;
     /** returns an event's starting date as a string formatted according to the
      users locale settings */
     QString dtStartDateStr(bool shortfmt=true) const;
     /** returns an event's starting date and time as a string formatted according
      to the users locale settings */
     QString dtStartStr(bool shortfmt=true) const;
 
     virtual void setDuration(int seconds);
     int duration() const;
     void setHasDuration(bool);
     bool hasDuration() const;
 
     /** Return true or false depending on whether the incidence "floats,"
      * i.e. has a date but no time attached to it. */
     bool doesFloat() const;
     /** Set whether the incidence floats, i.e. has a date but no time attached to it. */
     void setFloats(bool f);
 
     /**
       Add Attendee to this incidence. IncidenceBase takes ownership of the
       Attendee object.
     */
     bool addAttendee(Attendee *a, bool doupdate=true );
 //    void removeAttendee(Attendee *a);
 //    void removeAttendee(const char *n);
     /** Remove all Attendees. */
     void clearAttendees();
     /** Return list of attendees. */
     QPtrList<Attendee> attendees() const { return mAttendees; };
     /** Return number of attendees. */
     int attendeeCount() const { return mAttendees.count(); };
     /** Return the Attendee with this email */
     Attendee* attendeeByMail(const QString &);
     /** Return first Attendee with one of this emails */
     Attendee* attendeeByMails(const QStringList &, const QString& email = QString::null);
 
     /** pilot syncronization states */
     enum { SYNCNONE = 0, SYNCMOD = 1, SYNCDEL = 3 };
     /** Set synchronisation satus. */
     void setSyncStatus(int stat);
     /** Return synchronisation status. */
     int syncStatus() const;
 
     /** Set Pilot Id. */
     void setPilotId(int id);
     /** Return Pilot Id. */
     int pilotId() const;
 
     void setTempSyncStat(int id);
     int tempSyncStat() const;
     void setIDStr( const QString & );
     QString IDStr() const;
     void setID( const QString &, const QString & );
     QString  getID( const QString & );
     void setCsum( const QString &, const QString & );
     QString getCsum( const QString & );
     void removeID(const QString &);
 
     void registerObserver( Observer * );
     void unRegisterObserver( Observer * );
     void updated();
     void setCalID( int id );
     int calID() const;
     void setCalEnabled( bool );
     bool calEnabled() const; 
     void setAlarmEnabled( bool );
     bool alarmEnabled() const;
     bool isTagged() const;
     void setTagged( bool );
     virtual void setLastModifiedSubInvalid();
   protected:
     bool blockLastModified;
     bool mIsTagged;
     QDateTime mDtStart;
     bool mReadOnly;
     QDateTime getEvenTime( QDateTime );
 
   private:
     // base components
     QString mOrganizer;
+    QString mLastModifiedKey;
     QString mUid;
     int mCalID;
     bool mCalEnabled;
     bool mAlarmEnabled;
     QDateTime mLastModified;
     QPtrList<Attendee> mAttendees;
 
     bool mFloats;
 
     int mDuration;
     bool mHasDuration;
     QString  mExternalId;
     int mTempSyncStat;
 
     // PILOT SYNCHRONIZATION STUFF
     int mPilotId;                         // unique id for pilot sync
     int mSyncStatus;                      // status (for sync)
 
     QPtrList<Observer> mObservers;
 };
 
 bool operator==( const IncidenceBase&, const IncidenceBase& );
 }
 
 #endif