fixed segfault when trying to display uncategorized eventHEADmaster

Signed-off-by: Michael Krelin <hacker@klever.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/korganizer/koagendaitem.cpp b/korganizer/koagendaitem.cpp
index 0f9a38f..d38cb00 100644
--- a/korganizer/koagendaitem.cpp
+++ b/korganizer/koagendaitem.cpp
@@ -59,129 +59,130 @@ extern int globalFlagBlockAgendaItemUpdate;
 
 #include "koagendaitem.h"
 //#include "koagendaitem.moc"
 
 
 //--------------------------------------------------------------------------
 
 QToolTipGroup *KOAgendaItem::mToolTipGroup = 0;
 
 //--------------------------------------------------------------------------
 
 class KOAgendaItemWhatsThis :public Q3WhatsThis
 {
 public:
   KOAgendaItemWhatsThis( KOAgendaItem* view ) : Q3WhatsThis( view ),_view (view) { };
 
 protected:
   virtual QString text( const QPoint& )
   {
     return _view->getWhatsThisText() ;
   }
 private:
   KOAgendaItem * _view;
 };
 
 KOAgendaItem::KOAgendaItem(Incidence *incidence, QDate qd, QWidget *parent,bool allday,
                            const char *name,Qt::WFlags) :
     QWidget(parent, name), mIncidence(incidence), mDate(qd)
 {
 #ifndef DESKTOP_VERSION
     //QPEApplication::setStylusOperation( this, QPEApplication::RightOnHold );
 #endif
     mKOAgendaItemWhatsThis =  new KOAgendaItemWhatsThis(this);
     Qt::WindowFlags wflags = windowFlags() |Qt::WRepaintNoErase;// WResizeNoErase
     setWindowFlags ( wflags);
     mAllDay = allday;
     init ( incidence, qd );
     //setMouseTracking(true);
     //setAcceptDrops(true);
     xPaintCoord = -1;
     yPaintCoord = -1;
 }
 QString KOAgendaItem::getWhatsThisText()
 {
     if ( mIncidence )
         return KIncidenceFormatter::instance()->getFormattedText( mIncidence, 
                                                                   KOPrefs::instance()->mWTshowDetails,
                                                                   KOPrefs::instance()->mWTshowCreated,
                                                                   KOPrefs::instance()->mWTshowChanged);
     return "KOAgendaItem::getWhatsThisText()::internal error";
 }
 
 void KOAgendaItem::initColor ()
 {
     if ( (mIncidence->typeID() == todoID ) &&
          ( !((static_cast<Todo*>(mIncidence))->isCompleted()) &&
            ((static_cast<Todo*>(mIncidence))->dtDue().date() <=  QDate::currentDate()) ) ) {
         if (  (static_cast<Todo*>(mIncidence))->dtDue() <  (QDateTime)QDateTime::currentDateTime().date()) 
             mBackgroundColor = KOPrefs::instance()->mTodoOverdueColor ;
         else 
             mBackgroundColor = KOPrefs::instance()->mTodoDueTodayColor;
     }
     else {
         QStringList categories = mIncidence->categories();
-        QString cat = categories.first();
+        QString cat;
+        if(!categories.isEmpty()) cat = categories.first();
         if (cat.isEmpty()) {
             if ( (mIncidence->typeID() == todoID ) &&((static_cast<Todo*>(mIncidence))->isCompleted()) )
                 mBackgroundColor =KOPrefs::instance()->mTodoDoneColor;
             else
                 mBackgroundColor =KOPrefs::instance()->defaultColor( mIncidence->calID() );
         } else {
             mBackgroundColor = *KOPrefs::instance()->categoryColor(cat);
             if ( (mIncidence->typeID() == todoID ) &&((static_cast<Todo*>(mIncidence))->isCompleted()) ) {
                 if ( mBackgroundColor == KOPrefs::instance()->mEventColor )
                     mBackgroundColor = KOPrefs::instance()->mTodoDoneColor;
             }
         }
             
     }
 
     QColor BackgroundColor ( mBackgroundColor );
     if ( mIncidence->calID() > 1 ) {
         //BackgroundColor = KOPrefs::instance()->defaultColor( mIncidence->calID() );
     }
     mColorGroup  = QColorGroup( BackgroundColor.light(), 
                                 BackgroundColor.dark(),BackgroundColor.light(),
                                 BackgroundColor.dark(),BackgroundColor, Qt::black, BackgroundColor) ;
     setBackgroundColor( mBackgroundColor );
     mWhiteText = (mBackgroundColor.red() + mBackgroundColor.green() + mBackgroundColor.blue() < 250);
 }
 void KOAgendaItem::init ( Incidence *incidence, QDate qd )
 {
     mIncidence = incidence;
     mDate = qd;
     mFirstMultiItem = 0;
     mNextMultiItem = 0;
     mLastMultiItem = 0;  
     computeText();
     initColor();
     mConflictItems.clear();
     setCellXY(0,0,1);
     setCellXWidth(0);
     setSubCell(0);
     setSubCells(1);
     setMultiItem(0,0,0);
     startMove();
     mSelected = true;
     select(false);
     QFontMetrics fontinf(KOPrefs::instance()->mAgendaViewFont);
     mFontPixelSize = fontinf.height();;
     hide();
     xPaintCoord = -1;
     yPaintCoord = -1;
 }
 
 
 KOAgendaItem::~KOAgendaItem()
 {
 #if QT_VERSION >= 0x030000
 
 #else
     delete mKOAgendaItemWhatsThis;
 #endif 
   
 }
 
 void KOAgendaItem::recreateIncidence()
 {
 #if 0