4 files changed, 81 insertions, 1 deletions

diff --git a/libkcal/calendar.cpp b/libkcal/calendar.cpp
index a662eeb..b7990d4 100644
--- a/libkcal/calendar.cpp
+++ b/libkcal/calendar.cpp
@@ -339,49 +339,50 @@ QPtrList<Event> Calendar::events( const QDate &start, const QDate &end,
   QPtrList<Event> el = rawEvents(start,end,inclusive);
   mFilter->apply(&el);
   return el;
 }
 
 QPtrList<Event> Calendar::events()
 {
   QPtrList<Event> el = rawEvents();
   mFilter->apply(&el);
   return el;
 }
 void Calendar::addIncidenceBranch(Incidence *i)
 {
     addIncidence( i );
     Incidence * inc;
     QPtrList<Incidence> Relations = i->relations();
     for (inc=Relations.first();inc;inc=Relations.next()) {
        addIncidenceBranch( inc );
     } 
 }
 
 bool Calendar::addIncidence(Incidence *i)
 {
   Incidence::AddVisitor<Calendar> v(this);
-  i->setCalID( mDefaultCalendar );
+  if ( i->calID() == 0 )
+      i->setCalID( mDefaultCalendar );
   i->setCalEnabled( true );
   return i->accept(v);
 }
 void Calendar::deleteIncidence(Incidence *in)
 {
     if ( in->typeID() == eventID )
         deleteEvent( (Event*) in );
     else if ( in->typeID() == todoID )
         deleteTodo( (Todo*) in);
     else if ( in->typeID() == journalID )
         deleteJournal( (Journal*) in );
 }
 
 Incidence* Calendar::incidence( const QString& uid )
 {
   Incidence* i;
 
   if( (i = todo( uid )) != 0 )
     return i;
   if( (i = event( uid )) != 0 )
     return i;
   if( (i = journal( uid )) != 0 )
       return i;
 
diff --git a/libkcal/calendar.h b/libkcal/calendar.h
index 4652fe5..14a1a45 100644
--- a/libkcal/calendar.h
+++ b/libkcal/calendar.h
@@ -55,48 +55,49 @@ namespace KCal {
   care of deleting it. All Events returned by the query functions are returned
   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;
     virtual void addCalendar( Calendar*  ) = 0;
     virtual bool addCalendarFile( QString name, int id ) = 0;
+    virtual bool mergeCalendarFile( QString name ) = 0;
     virtual void setSyncEventsReadOnly() = 0;
     virtual void stopAllTodos() = 0;
   
     /**
       Sync changes in memory to persistant storage.
     */
     virtual void save() = 0;
     virtual QPtrList<Event> getExternLastSyncEvents() = 0;
     virtual void removeSyncInfo( QString syncProfile) = 0; 
     virtual bool isSaving() { return false; }
 
     /**
       Return the owner of the calendar's full name.
     */
     const QString &getOwner() const;
     /**
       Set the owner of the calendar. Should be owner's full name.
     */
     void setOwner( const QString &os );
     /**
       Return the email address of the calendar owner.
     */
     const QString &getEmail();
     /**
diff --git a/libkcal/calendarlocal.cpp b/libkcal/calendarlocal.cpp
index cce798f..3e42ec0 100644
--- a/libkcal/calendarlocal.cpp
+++ b/libkcal/calendarlocal.cpp
@@ -47,48 +47,123 @@ using namespace KCal;
 
 CalendarLocal::CalendarLocal()
   : Calendar()
 {
   init();
 }
 
 CalendarLocal::CalendarLocal(const QString &timeZoneId)
   : Calendar(timeZoneId)
 {
   init();
 }
 
 void CalendarLocal::init()
 {
     mNextAlarmIncidence = 0;
 }
 
 
 CalendarLocal::~CalendarLocal()
 {
     if ( mDeleteIncidencesOnClose )
         close();
 }
+bool CalendarLocal::mergeCalendarFile( QString name )
+{
+    CalendarLocal calendar( timeZoneId() );
+    calendar.setDefaultCalendar( 1 );
+    if ( calendar.load( name ) ) {
+        mergeCalendar( &calendar  );
+        return true;
+    }
+    return false;
+}
+ 
+Incidence* CalendarLocal::incidenceForUid( const QString& uid )
+{
+    Todo *todo;;
+    Incidence *retVal = 0;
+    for ( todo = mTodoList.first(); todo; todo = mTodoList.next() ) {
+        if ( todo->uid() == uid ) {
+            if ( retVal ) {
+                if ( retVal->calID() > todo->calID() ) {
+                    retVal = todo;
+                }
+            } else {
+                retVal = todo;
+            }
+        } 
+    }
+    if ( retVal ) return retVal;
+    Event *event;
+    for ( event = mEventList.first(); event; event = mEventList.next() ) {
+        if (  event->uid() == uid ) {
+            if ( retVal ) {
+                if ( retVal->calID() > event->calID() ) {
+                    retVal = event;
+                }
+            } else {
+                retVal = event;
+            }
+        }
+    }
+    if ( retVal ) return retVal;
+    for ( Journal *it = mJournalList.first(); it; it = mJournalList.next() )
+        if ( it->uid() == uid ) {
+            if ( retVal ) {
+                if ( retVal->calID() > it->calID() ) {
+                    retVal = it;
+                }
+            } else {
+                retVal = it;
+            }
+        }
+    return retVal;
+}
+
+bool CalendarLocal::mergeCalendar( Calendar* remote  )
+{
+    QPtrList<Incidence> er = remote->rawIncidences(); 
+    Incidence* inR = er.first();
+    Incidence* inL; 
+    while ( inR ) {
+        inL = incidenceForUid( inR->uid() );
+        if ( inL ) {
+            int calID = inL->calID();
+            deleteIncidence( inL );
+            inL = inR->clone();
+            inL->setCalID( calID );
+            addIncidence( inL );
+        } else {
+            inL = inR->clone();
+            inL->setCalID( 0 );// add to default cal
+            addIncidence( inL );
+        }
+        inR = er.next();
+    }
+    return true;
+}
 bool CalendarLocal::addCalendarFile( QString name, int id )
 {
     CalendarLocal calendar( timeZoneId() );
     calendar.setDefaultCalendar( id );
     if ( calendar.load( name ) ) {
         addCalendar( &calendar  );
         return true;
     }
     return false;
 }
 void CalendarLocal::setSyncEventsReadOnly()
 {
     Event * ev;
     ev = mEventList.first();
     while ( ev ) {
         if ( ev->uid().left(15) == QString("last-syncEvent-") )
             ev->setReadOnly( true );
         ev =  mEventList.next();
     } 
 }
 void CalendarLocal::addCalendar( Calendar* cal )
 {
     cal->setDontDeleteIncidencesOnClose();
     {
diff --git a/libkcal/calendarlocal.h b/libkcal/calendarlocal.h
index 98d16a3..23b0542 100644
--- a/libkcal/calendarlocal.h
+++ b/libkcal/calendarlocal.h
@@ -24,48 +24,51 @@
 
 #include "calendar.h"
 
 namespace KCal {
 
 class CalFormat;
 
 /**
   This class provides a calendar stored as a local file.
 */
 class CalendarLocal : public Calendar
 {
   public:
     /**
       Constructs a new calendar, with variables initialized to sane values.
     */
     CalendarLocal();
     /**
       Constructs a new calendar, with variables initialized to sane values.
     */
     CalendarLocal( const QString &timeZoneId );
     ~CalendarLocal();
     void addCalendar( Calendar*  );
     bool addCalendarFile( QString name, int id );
+    bool mergeCalendarFile( QString name );
+    bool mergeCalendar( Calendar* cal );
+    Incidence* incidenceForUid( const QString& uid );
     void setSyncEventsReadOnly();
     void stopAllTodos();
     /**
       Loads a calendar on disk in vCalendar or iCalendar format into the current
       calendar. Any information already present is lost.
       @return true, if successfull, false on error.
       @param fileName the name of the calendar on disk.
     */
     bool load( const QString &fileName );
     /**
       Writes out the calendar to disk in the specified \a format.
       CalendarLocal takes ownership of the CalFormat object.
       @return true, if successfull, false on error.
       @param fileName the name of the file
     */
     bool save( const QString &fileName, CalFormat *format = 0 );
 
     /**
       Clears out the current calendar, freeing all used memory etc. etc.
     */
     void close();
 
     void save() {}