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diff --git a/kresources/kolab/kcal/incidence.h b/kresources/kolab/kcal/incidence.h
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+/*
+    This file is part of the kolab resource - the implementation of the
+    Kolab storage format. See www.kolab.org for documentation on this.
+
+    Copyright (c) 2004 Bo Thorsen <bo@sonofthor.dk>
+
+    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., 51 Franklin Street, Fifth Floor,
+    Boston, MA 02110-1301, USA.
+
+    In addition, as a special exception, the copyright holders give
+    permission to link the code of this program with any edition of
+    the Qt library by Trolltech AS, Norway (or with modified versions
+    of Qt that use the same license as Qt), and distribute linked
+    combinations including the two.  You must obey the GNU General
+    Public License in all respects for all of the code used other than
+    Qt.  If you modify this file, you may extend this exception to
+    your version of the file, but you are not obligated to do so.  If
+    you do not wish to do so, delete this exception statement from
+    your version.
+*/
+
+#ifndef KOLAB_INCIDENCE_H
+#define KOLAB_INCIDENCE_H
+
+#include <kolabbase.h>
+
+class QDomElement;
+
+namespace KCal {
+  class Incidence;
+  class Recurrence;
+  class Attachment;
+  class ResourceKolab;
+}
+
+namespace Kolab {
+
+/**
+ * This abstract class represents an incidence which has the shared
+ * fields, of events and tasks and knows how to load/save these
+ * from/to XML, and from/to a KCal::Incidence.
+ */
+class Incidence : public KolabBase {
+public:
+  struct Recurrence {
+    QString cycle;
+    QString type;
+    int interval;
+    QStringList days; // list of days-of-the-week
+    QString dayNumber;
+    QString month;
+    QString rangeType;
+    QString range; // date or number or nothing
+    QValueList<QDate> exclusions;
+  };
+
+  struct Attendee : Email {
+    Attendee() : requestResponse( true ), invitationSent( false ) {}
+    QString status;
+    bool requestResponse;
+    bool invitationSent;
+    QString role;
+    QString delegate;
+    QString delegator;
+  };
+
+  explicit Incidence( KCal::ResourceKolab *res, const QString &subResource, Q_UINT32 sernum,
+                      const QString& tz );
+  virtual ~Incidence();
+
+  void saveTo( KCal::Incidence* incidence );
+
+  virtual void setSummary( const QString& summary );
+  virtual QString summary() const;
+
+  virtual void setLocation( const QString& location );
+  virtual QString location() const;
+
+  virtual void setOrganizer( const Email& organizer );
+  virtual Email organizer() const;
+
+  virtual void setStartDate( const QDateTime& startDate );
+  virtual void setStartDate( const QDate& startDate );
+  virtual void setStartDate( const QString& startDate );
+  virtual QDateTime startDate() const;
+
+  virtual void setAlarm( float alarm );
+  virtual float alarm() const;
+
+  virtual void setRecurrence( KCal::Recurrence* recur );
+  virtual Recurrence recurrence() const;
+
+  virtual void addAttendee( const Attendee& attendee );
+  QValueList<Attendee>& attendees();
+  const QValueList<Attendee>& attendees() const;
+
+  /**
+   * The internal uid is used as the uid inside KOrganizer whenever
+   * two or more events with the same uid appear, which KOrganizer
+   * can't handle. To avoid keep that interal uid from changing all the
+   * time, it is persisted in the XML between a save and the next load.
+   */
+  void setInternalUID( const QString& iuid );
+  QString internalUID() const;
+
+  virtual void setRevision( int );
+  virtual int revision() const;
+
+  // Load the attributes of this class
+  virtual bool loadAttribute( QDomElement& );
+
+  // Save the attributes of this class
+  virtual bool saveAttributes( QDomElement& ) const;
+
+protected:
+  enum FloatingStatus { Unset, AllDay, HasTime };
+
+  // Read all known fields from this ical incidence
+  void setFields( const KCal::Incidence* );
+
+  bool loadAttendeeAttribute( QDomElement&, Attendee& );
+  void saveAttendeeAttribute( QDomElement& element,
+                              const Attendee& attendee ) const;
+  void saveAttendees( QDomElement& element ) const;
+  void saveAttachments( QDomElement& element ) const;
+
+  void loadRecurrence( const QDomElement& element );
+  void saveRecurrence( QDomElement& element ) const;
+  void saveCustomAttributes( QDomElement& element ) const;
+  void loadCustomAttributes( QDomElement& element );
+
+  void loadAttachments();
+
+  QString productID() const;
+
+  QString mSummary;
+  QString mLocation;
+  Email mOrganizer;
+  QDateTime mStartDate;
+  FloatingStatus mFloatingStatus;
+  float mAlarm;
+  bool mHasAlarm;
+  Recurrence mRecurrence;
+  QValueList<Attendee> mAttendees;
+  QValueList<KCal::Attachment*> mAttachments;
+  QString mInternalUID;
+  int mRevision;
+
+  struct Custom {
+    QCString key;
+    QString value;
+  };
+  QValueList<Custom> mCustomList;
+
+  KCal::ResourceKolab *mResource;
+  QString mSubResource;
+  Q_UINT32 mSernum;
+};
+
+}
+
+#endif // KOLAB_INCIDENCE_H