calendarnull.h

/*
    This file is part of libkcal.
 
    Copyright (c) 2003 Cornelius Schumacher <schumacher@kde.org>
 
    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.
*/
/*
  @file calendarnull.h
  A null calendar class with does nothing.
 
  @author Cornelius Schumacher
*/
#ifndef KCAL_CALENDARNULL_H
#define KCAL_CALENDARNULL_H
 
#include "calendar.h"
#include "libkcal_export.h"
 
class TDEConfig;
 
namespace KCal {
 
class LIBKCAL_EXPORT CalendarNull : public Calendar
{
  public:
    CalendarNull( const TQString &timeZoneId );
 
    ~CalendarNull() {}
 
    static CalendarNull *self();
 
    void close() {}
 
    void closeEvents() {}
 
    void closeTodos() {}
 
    void closeJournals() {}
 
    void save() {}
 
    bool reload( const TQString & ) { return true;}
    
// Event Specific Methods //
 
    bool addEvent( Event * /*event*/ )
      { return false; }
 
    bool deleteEvent( Event * /*event*/ )
      { return false; }
 
    Event::List rawEvents( EventSortField /*sortField*/,
                           SortDirection /*sortDirection*/ )
      { return Event::List(); }
 
    Event::List rawEvents( const TQDate & /*start*/, const TQDate & /*end*/,
                           bool /*inclusive*/ )
      { return Event::List(); }
 
    Event::List rawEventsForDate( const TQDateTime & /*qdt*/ )
      { return Event::List(); }
 
    Event::List rawEventsForDate(
      const TQDate & /*date*/,
      EventSortField /*sortField=EventSortUnsorted*/,
      SortDirection /*sortDirection=SortDirectionAscending*/ )
      { return Event::List(); }
 
    Event *event( const TQString & /*uid*/ )
      { return 0; }
 
// Todo Specific Methods //
 
    bool addTodo( Todo * /*todo*/ )
      { return false; }
 
    bool deleteTodo( Todo * /*todo*/ )
      { return false; }
 
    Todo::List rawTodos( TodoSortField /*sortField*/,
                         SortDirection /*sortDirection*/ )
      { return Todo::List(); }
 
    Todo::List rawTodosForDate( const TQDate & /*date*/ )
      { return Todo::List(); }
 
    Todo *todo( const TQString & /*uid*/ )
      { return 0; }
 
// Journal Specific Methods //
 
    bool addJournal( Journal * /*journal*/ )
      { return false; }
 
    bool deleteJournal( Journal * /*journal*/ )
      { return false; }
 
    Journal::List rawJournals( JournalSortField /*sortField*/,
                               SortDirection /*sortDirection*/ )
      { return Journal::List(); }
 
    Journal::List rawJournalsForDate( const TQDate & /*date*/ )
      { return Journal::List(); }
 
    Journal *journal( const TQString & /*uid*/ )
      { return 0; }
 
// Alarm Specific Methods //
 
    Alarm::List alarms( const TQDateTime & /*from*/, const TQDateTime & /*to*/ )
      { return Alarm::List(); }
 
// Observer Specific Methods //
 
    void incidenceUpdated( IncidenceBase * /*incidenceBase*/ ) {}
 
    void setTimeZoneIdViewOnly( const TQString& ) {};
    
  private:
    static CalendarNull *mSelf;
 
    class Private;
    Private *d;
};
 
}
 
#endif