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/*
    This file is part of KOrganizer.

    Copyright (c) 2004 Cornelius Schumacher <schumacher@kde.org>
    Copyright (C) 2004 Reinhold Kainhofer <reinhold@kainhofer.com>

    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 TQt, and distribute the resulting executable,
    without including the source code for TQt in the source distribution.
*/
#ifndef DATENAVIGATORCONTAINER_H
#define DATENAVIGATORCONTAINER_H

#include <tqframe.h>

class KDateNavigator;

class DateNavigatorContainer: public TQFrame
{
    Q_OBJECT
  
  public:
    DateNavigatorContainer( TQWidget *parent = 0, const char *name = 0 );
    ~DateNavigatorContainer();

    /**
      Associate date navigator with a calendar. It is used by KODayMatrix.
    */
    void setCalendar( Calendar * );

    TQSize minimumSizeHint() const;
    TQSize sizeHint() const;
    void setUpdateNeeded();
  public slots:
    /**
       preferredMonth is useful when the datelist crosses months, if different
       from -1, it has the month that the kdatenavigator should show in case
       of ambiguity
    */
    void selectDates( const KCal::DateList &, const TQDate &preferredMonth = TQDate() );
    void updateView();
    void updateConfig();
    void updateDayMatrix();
    void updateToday();

    void goPrevMonth();
    void goNextMonth();

  signals:
    void datesSelected( const KCal::DateList & );
    void incidenceDropped( Incidence *, const TQDate & );
    void incidenceDroppedMove( Incidence *, const TQDate & );
    void weekClicked( const TQDate & );

    void goPrevious();
    void goNext();

    void nextYearClicked();
    void prevYearClicked();

    /** Signals that the previous month button has been clicked.

        @param currentMonth The month displayed on the first KDateNavigator.
               DateNavigator doesn't know anything abouts months, it just has
               a list of selected dates, so we must send this.
        @param selectionLowerLimit The first date of the first KDateNavigator.
        @param selectionUpperLimit The last date of the last KDateNavigator.
    */
    void prevMonthClicked( const TQDate &currentMonth,
                           const TQDate &selectionLowerLimit,
                           const TQDate &selectionUpperLimit );

    void nextMonthClicked( const TQDate &currentMonth,
                           const TQDate &selectionLowerLimit,
                           const TQDate &selectionUpperLimit );

    void monthSelected( int month );

    void yearSelected( int year );

  protected:
    void resizeEvent( TQResizeEvent * );
    void setBaseDates( const TQDate &start );
    void connectNavigatorView( KDateNavigator *v );
  protected slots:
    /** Resizes all the child elements after the size of the widget
        changed. This slot is called by a TQTimer::singleShot from
        resizeEvent. This makes the UI seem more responsive, since
        the other parts of the splitter are resized earlier now */
    void resizeAllContents();

  private:
    /* Returns the first day of the first KDateNavigator, and the last day
       of the last KDateNavigator.

       @param monthOffset If you have two KDateNavigators displaying January and February
       and want to know the boundaries of, for e.g. displaying February and March,
       use monthOffset = 1.
    */
    TQPair<TQDate,TQDate> dateLimits( int monthOffset = 0 );

    KDateNavigator *mNavigatorView;

    KCal::Calendar *mCalendar;

    TQPtrList<KDateNavigator> mExtraViews;

    int mHorizontalCount;
    int mVerticalCount;
};

#endif