datechecker.h

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/*
  This file is part of KOrganizer.

  Copyright (c) 2002 Adriaan de Groot <groot@kde.org>
  Copyright (c) 2004 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.,
  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

  As a special exception, permission is given to link this program
  with any edition of Qt, and distribute the resulting executable,
  without including the source code for Qt in the source distribution.
*/

#ifndef KORG_DATECHECKER_H
#define KORG_DATECHECKER_H

#include <QDate>
#include <QObject>

class QTimer;

class DateChecker: public QObject
{
  Q_OBJECT
  public:
    explicit DateChecker( QObject *parent = 0 );
    ~DateChecker();

    enum RolloverType {
      None,
      FollowDay,
      FollowMonth
    };
    void enableRollover( RolloverType );

  signals:
    // Signals emitted at midnight carrying the new date.
    void dayPassed( const QDate & );
    void monthPassed( const QDate & );

  protected slots:
     void possiblyPastMidnight();

     void passedMidnight();

  private:
    QTimer *mUpdateTimer;
    QDate mLastDayChecked;
    RolloverType mUpdateRollover;
};

#endif