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
@@ -1,315 +1,316 @@
 /*
     This file is part of KOrganizer.
     Copyright (c) 2000,2001 Cornelius Schumacher <schumacher@kde.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
 
     This program 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 General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 #include <qlabel.h>
 #include <qlayout.h>
 #include <q3hbox.h>
 #include <q3vbox.h>
 #include <qtooltip.h>
 #include <q3whatsthis.h>
 #include <q3dragobject.h>
 #include <qdrawutil.h> 
 #include <qpainter.h> 
 #include <QDesktopWidget>
 //Added by qt3to4:
 #include <Q3PtrList>
 #include <QPixmap>
 #include <QDragEnterEvent>
 #include <QDropEvent>
 #include <QResizeEvent>
 #include <QMouseEvent>
 #include <QEvent>
 #include <QPaintEvent>
 
 #include <kiconloader.h>
 #include <kdebug.h>
 #include <kglobal.h>
 #include <klocale.h>
 #ifndef DESKTOP_VERSION
 #include <qpe/qpeapplication.h>
 #define AGENDA_ICON_SIZE 5
 #else
 #include <qapplication.h>
 #define AGENDA_ICON_SIZE 7
 #endif
 #include <libkcal/icaldrag.h>
 #include <libkcal/vcaldrag.h>
 #include <libkcal/kincidenceformatter.h>
 extern int globalFlagBlockAgenda;
 extern int globalFlagBlockAgendaItemPaint;
 extern int globalFlagBlockAgendaItemUpdate;
 
 #include "koprefs.h"
 
 #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
     Incidence* newInc = mIncidence->clone();
     newInc->recreate();
     if ( mIncidence->doesRecur() ) {
         mIncidence->addExDate( mDate );
         newInc->recurrence()->unsetRecurs();
         int len = mIncidence->dtStart().secsTo( ((Event*)mIncidence)->dtEnd());
         QTime tim = mIncidence->dtStart().time();
         newInc->setDtStart( QDateTime(mDate, tim) );
         ((Event*)newInc)->setDtEnd( newInc->dtStart().addSecs( len ) );
     }
 #endif
     mIncidence = mIncidence->recreateCloneException( mDate );
 }
 bool KOAgendaItem::updateIcons(QPainter * p, bool horLayout)
 {
     int size = AGENDA_ICON_SIZE;
 
     int yOff = 0;
     int xOff = 0;
     int x = pos().x();
 
     if ( x < 0 ) x = 0;
     x += 3; 
     int y;
     if ( mAllDay )
         y = pos().y()+3;
     else
         y =  mCellYTop * ( height() / cellHeight() ) +3;
 
 
     if ( mIncidence->calID() > 1 ) {
         p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, KOPrefs::instance()->defaultColor( mIncidence->calID() ) );
         p->drawRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x-1, yOff*( 1 +AGENDA_ICON_SIZE)+y-1, AGENDA_ICON_SIZE+2, AGENDA_ICON_SIZE+2 );
         if ( horLayout ){
             ++xOff;
             ++x;
         }
         else {
             ++yOff;
             ++y;
         }
     }
     if (mIncidence->cancelled() &&  height() < 20 ) {
         int xpos = xOff*( 1 +AGENDA_ICON_SIZE )+x;
         int ypos = yOff*( 1 +AGENDA_ICON_SIZE)+y;
         p->drawLine( xpos, ypos, xpos+AGENDA_ICON_SIZE-1, ypos+AGENDA_ICON_SIZE-1  );
         p->drawLine( xpos, ypos+AGENDA_ICON_SIZE-1, xpos+AGENDA_ICON_SIZE-1, ypos );
         if ( horLayout )
             ++xOff;
         else
             ++yOff;
     }
     if (mIncidence->isAlarmEnabled() && mIncidence->alarmEnabled()) {
         p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::red );
         if ( horLayout )
             ++xOff;
         else
             ++yOff;
     }
     if (mIncidence->doesRecur()) {
         p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::blue );
         if ( horLayout )
             ++xOff;
         else
             ++yOff;
     }
     if (mIncidence->description().length() > 0) {
         p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::darkGreen );
         if ( horLayout )
             ++xOff;
         else
             ++yOff;
     }
    if (mIncidence->isReadOnly()) {
         p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::white );
         if ( horLayout )
             ++xOff;
         else
             ++yOff;
     }
 
     if (mIncidence->attendeeCount()>0) {
         
         if (mIncidence->organizer() == KOPrefs::instance()->email()) {
             p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::black );
             if ( horLayout )
                 ++xOff;
             else
                 ++yOff;
         } else {
             Attendee *me = mIncidence->attendeeByMails(KOPrefs::instance()->mAdditionalMails,KOPrefs::instance()->email());
             if (me!=0) {
 
 
             } else {
                 p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::yellow  );
                 if ( horLayout )
                     ++xOff;
                 else
                     ++yOff;
 
             }
             p->fillRect ( xOff*( 1 +AGENDA_ICON_SIZE )+x, yOff*( 1 +AGENDA_ICON_SIZE)+y, AGENDA_ICON_SIZE, AGENDA_ICON_SIZE, Qt::darkYellow );
             if ( horLayout )
                 ++xOff;
             else
                 ++yOff;
 
         }
 
     }
   return ( yOff || xOff );
 }
 
 
 void KOAgendaItem::select(bool selected)
 {
     //qDebug("select %d %d",firstMultiItem(), nextMultiItem() );
     if (mSelected == selected) return;
     mSelected = selected;
     if ( ! isVisible() )
         return;
     if ( firstMultiItem() )
         firstMultiItem()->select( selected );
     if ( !firstMultiItem() && nextMultiItem() ) {
         KOAgendaItem *  placeItem = nextMultiItem();
         while ( placeItem ) { 
             placeItem->select( selected );