5 files changed, 39 insertions, 7 deletions

diff --git a/libkcal/calendar.cpp b/libkcal/calendar.cpp
index 52daaaa..88351eb 100644
--- a/libkcal/calendar.cpp
+++ b/libkcal/calendar.cpp
@@ -43,25 +43,25 @@ Calendar::Calendar()
 
 Calendar::Calendar( const QString &timeZoneId )
 { 
 
     init();
     setTimeZoneId(timeZoneId);
 }
 
 void Calendar::init()
 {
   mObserver = 0;
   mNewObserver = false;
-
+  mUndoIncidence = 0;
   mModified = false;
 
   // Setup default filter, which does nothing
   mDefaultFilter = new CalFilter;
   mFilter = mDefaultFilter;
   mFilter->setEnabled(false);
 
   // initialize random numbers.  This is a hack, and not
   // even that good of one at that.
 //  srandom(time(0));
 
   // user information...
@@ -100,31 +100,40 @@ void Calendar::init()
     KOPrefs::instance()->mDaylightSavings = now->tm_isdst;
   }
 
   setTimeZone(tzStr);
 #endif
 
 //  KOPrefs::instance()->writeConfig();
 }
 
 Calendar::~Calendar()
 {
   delete mDefaultFilter;
+  if ( mUndoIncidence )
+      delete mUndoIncidence;
 }
 
 const QString &Calendar::getOwner() const
 {
   return mOwner;
 }
 
+bool Calendar::undoDeleteIncidence()
+{
+    if (!mUndoIncidence)
+        return false;
+    addIncidence(mUndoIncidence);
+    mUndoIncidence = 0;
+}
 void Calendar::setOwner(const QString &os)
 {
   int i;
   mOwner = os;
   i = mOwner.find(',');
   if (i != -1)
     mOwner = mOwner.left(i);
 
   setModified( true );
 }
 
 void Calendar::setTimeZone(const QString & tz)
diff --git a/libkcal/calendar.h b/libkcal/calendar.h
index b7d6a1f..2f2c3aa 100644
--- a/libkcal/calendar.h
+++ b/libkcal/calendar.h
@@ -56,24 +56,26 @@ namespace KCal {
   as pointers, that means all changes to the returned events are immediately
   visible in the Calendar. You shouldn't delete any Event object you get from
   Calendar.
 */
 class Calendar : public QObject, public CustomProperties,
                  public IncidenceBase::Observer
 {
     Q_OBJECT
 public:
     Calendar();
     Calendar(const QString &timeZoneId);
     virtual ~Calendar();
+    Incidence * undoIncidence() { return mUndoIncidence; };
+    bool undoDeleteIncidence();
     void deleteIncidence(Incidence *in);
     void resetTempSyncStat();
     void resetPilotStat(int id);
     /**
       Clears out the current calendar, freeing all used memory etc.
     */
     virtual void close() = 0;
   
     /**
       Sync changes in memory to persistant storage.
     */
     virtual void save() = 0;
@@ -313,24 +315,25 @@ public:
     /**
       Get unfiltered events, which occur on the given date.
     */
     virtual QPtrList<Event> rawEventsForDate( const QDate &date,
                                               bool sorted = false ) = 0;  
     /**
       Get events in a range of dates. If inclusive is set to true, only events
       are returned, which are completely included in the range.
     */
     virtual QPtrList<Event> rawEvents( const QDate &start, const QDate &end,
                                        bool inclusive = false ) = 0; 
     Incidence *mNextAlarmIncidence;
+    Incidence *mUndoIncidence;
 
 private:
     void init();
   
     QString mOwner;        // who the calendar belongs to
     QString mOwnerEmail;   // email address of the owner
     int mTimeZone;         // timezone OFFSET from GMT (MINUTES)
     bool mLocalTime;       // use local time, not UTC or a time zone
 
     CalFilter *mFilter;
     CalFilter *mDefaultFilter;
     
diff --git a/libkcal/calendarlocal.cpp b/libkcal/calendarlocal.cpp
index 3f46d53..12294c0 100644
--- a/libkcal/calendarlocal.cpp
+++ b/libkcal/calendarlocal.cpp
@@ -143,29 +143,29 @@ bool CalendarLocal::addEvent( Event *event )
 {
   insertEvent( event );
 
   event->registerObserver( this );
 
   setModified( true );
 
   return true;
 }
 
 void CalendarLocal::deleteEvent( Event *event )
 {
- 
-
-  if ( mEventList.removeRef( event ) ) {
-    setModified( true );
-  }
+    if ( mUndoIncidence ) delete mUndoIncidence;
+    mUndoIncidence = event->clone();
+    if ( mEventList.removeRef( event ) ) {
+        setModified( true );
+    }
 }
 
 
 Event *CalendarLocal::event( const QString &uid )
 {
 
   Event *event;
 
   for ( event = mEventList.first(); event; event = mEventList.next() ) {
     if ( event->uid() == uid ) {
       return event;
     }
@@ -192,25 +192,27 @@ bool CalendarLocal::addTodo( Todo *todo )
 
   // Set up subtask relations
   setupRelations( todo );
 
   setModified( true );
 
   return true;
 }
 
 void CalendarLocal::deleteTodo( Todo *todo )
 {
   // Handle orphaned children
-  removeRelations( todo );
+    if ( mUndoIncidence ) delete mUndoIncidence;
+    mUndoIncidence = todo->clone();
+    removeRelations( todo );
 
   if ( mTodoList.removeRef( todo ) ) {
     setModified( true );
   }
 }
 
 QPtrList<Todo> CalendarLocal::rawTodos()
 {
   return mTodoList;
 }
 Todo *CalendarLocal::todo( QString syncProf, QString id )
 {
@@ -678,24 +680,27 @@ bool CalendarLocal::addJournal(Journal *journal)
 
   mJournalList.append(journal);
 
   journal->registerObserver( this );
 
   setModified( true );
 
   return true;
 }
 
 void CalendarLocal::deleteJournal( Journal *journal )
 {
+    if ( mUndoIncidence ) delete mUndoIncidence;
+    mUndoIncidence = journal->clone();
+    mUndoIncidence->setSummary( mUndoIncidence->description().left(25));
   if ( mJournalList.removeRef(journal) ) {
     setModified( true );
   }
 }
 
 Journal *CalendarLocal::journal( const QDate &date )
 {
 //  kdDebug(5800) << "CalendarLocal::journal() " << date.toString() << endl;
 
   for ( Journal *it = mJournalList.first(); it; it = mJournalList.next() )
     if ( it->dtStart().date() == date )
       return it;
diff --git a/libkcal/incidence.cpp b/libkcal/incidence.cpp
index 5a9ef0e..28402ae 100644
--- a/libkcal/incidence.cpp
+++ b/libkcal/incidence.cpp
@@ -164,24 +164,38 @@ bool KCal::operator==( const Incidence& i1, const Incidence& i2 )
         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() &&
         stringCompare( i1.location(), i2.location() );
 }
 
+Incidence* Incidence::recreateCloneException( QDate d  )
+{
+    Incidence* newInc = clone();
+    newInc->recreate();
+    if ( doesRecur() ) {
+        addExDate( d );
+        newInc->recurrence()->unsetRecurs();
+        int len = dtStart().secsTo( ((Event*)this)->dtEnd());
+        QTime tim = dtStart().time();
+        newInc->setDtStart( QDateTime(d, tim) );
+        ((Event*)newInc)->setDtEnd( newInc->dtStart().addSecs( len ) );
+    }
+    return newInc;
+}
 
 void Incidence::recreate()
 {
   setCreated(QDateTime::currentDateTime());
 
   setUid(CalFormat::createUniqueId());
 
   setRevision(0);
   setIDStr( ":" );
   setLastModified(QDateTime::currentDateTime());
 }
 
diff --git a/libkcal/incidence.h b/libkcal/incidence.h
index 7dc6f10..1807bc4 100644
--- a/libkcal/incidence.h
+++ b/libkcal/incidence.h
@@ -113,24 +113,25 @@ class Incidence : public IncidenceBase
 
     virtual Incidence *clone() = 0;
 
     virtual QDateTime getNextAlarmDateTime( bool * ok, int * offset ) 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. */