/*
    This file is part of KOrganizer.

    Copyright (c) 2001,2002,2003 Cornelius Schumacher <schumacher@kde.org>
    Copyright (C) 2003-2004 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, 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.
*/

#include <kdebug.h>
#include <klocale.h>

//#include "koglobals.h"
#include "navigatorbar.h"
#include "kdatenavigator.h"

#include <kcalendarsystem.h>

#include "datenavigatorcontainer.h"
#include "koprefs.h"

DateNavigatorContainer::DateNavigatorContainer( QWidget *parent,
                                                const char *name )
  : QWidget( parent, name ), mCalendar( 0 ),
    mHorizontalCount( 1 ), mVerticalCount( 1 )
{
  mExtraViews.setAutoDelete( true );

  mNavigatorView = new KDateNavigator( this, name );

  connectNavigatorView( mNavigatorView );
}

DateNavigatorContainer::~DateNavigatorContainer()
{
}

void DateNavigatorContainer::connectNavigatorView( KDateNavigator *v )
{
  connect( v, SIGNAL( datesSelected( const KCal::DateList & ) ),
           SIGNAL( datesSelected( const KCal::DateList & ) ) );
#if 0
  connect( v, SIGNAL( incidenceDropped( Incidence *, const QDate & ) ),
           SIGNAL( incidenceDropped( Incidence *, const QDate & ) ) );
  connect( v, SIGNAL( incidenceDroppedMove( Incidence *, const QDate & ) ),
           SIGNAL( incidenceDroppedMove( Incidence *, const QDate & ) ) );
#endif
  connect( v, SIGNAL( weekClicked( const QDate & ) ),
           SIGNAL( weekClicked( const QDate & ) ) );

  connect( v, SIGNAL( goPrevious() ), SIGNAL( goPrevious() ) );
  connect( v, SIGNAL( goNext() ), SIGNAL( goNext() ) );

  connect( v, SIGNAL( goNextMonth() ), SIGNAL( goNextMonth() ) );
  connect( v, SIGNAL( goPrevMonth() ), SIGNAL( goPrevMonth() ) );
  connect( v, SIGNAL( goNextYear() ), SIGNAL( goNextYear() ) );
  connect( v, SIGNAL( goPrevYear() ), SIGNAL( goPrevYear() ) );

  connect( v, SIGNAL( monthSelected( int ) ), SIGNAL( monthSelected( int ) ) );
}

void DateNavigatorContainer::setCalendar( Calendar *cal )
{
  mCalendar = cal;
  mNavigatorView->setCalendar( cal );
  KDateNavigator *n;
  for( n = mExtraViews.first(); n; n = mExtraViews.next() ) {
    n->setCalendar( cal );
  }
}

void DateNavigatorContainer::updateDayMatrix()
{
  mNavigatorView->updateDayMatrix();
  KDateNavigator *n;
  for( n = mExtraViews.first(); n; n = mExtraViews.next() ) {
    n->updateDayMatrix();
  }
}

void DateNavigatorContainer::updateToday()
{
    qDebug("DateNavigatorContainer::updateToday() NOT IMPL ");
#if 0
  mNavigatorView->updateToday();
  KDateNavigator *n;
  for( n = mExtraViews.first(); n; n = mExtraViews.next() ) {
    n->updateToday();
  }
#endif 
}

void DateNavigatorContainer::updateView()
{
  mNavigatorView->updateView();
  KDateNavigator *n;
  for( n = mExtraViews.first(); n; n = mExtraViews.next() ) {
    n->updateView();
  }
}

void DateNavigatorContainer::updateConfig()
{
  mNavigatorView->updateConfig();
  KDateNavigator *n;
  for( n = mExtraViews.first(); n; n = mExtraViews.next() ) {
    n->updateConfig();
  }
}

void DateNavigatorContainer::selectDates( const DateList &dateList )
{
  mNavigatorView->selectDates( dateList );
  setBaseDates();
  if ( mExtraViews.count() ) {
      KDateNavigator *view = mExtraViews.at( 0 );
      view->dayMatrix()->setSelectedDaysFrom(*(dateList.begin()), *(--dateList.end()));
      view->dayMatrix()->repaint( false ); 
      if ( mExtraViews.count() > 1 ) {
          KDateNavigator *view = mExtraViews.at( 1 );
          view->dayMatrix()->setSelectedDaysFrom(*(dateList.begin()), *(--dateList.end()));
          view->dayMatrix()->repaint( false );
      }
  }
}

void DateNavigatorContainer::setBaseDates()
{
  KCal::DateList dateList = mNavigatorView->selectedDates();
  if ( dateList.isEmpty() ) {
    kdError() << "DateNavigatorContainer::selectDates() empty list." << endl;
  }
  QDate baseDate = dateList.first();
  KDateNavigator *n;
  bool doRepaint = false; // skip first repaint
  for( n = mExtraViews.first(); n; n = mExtraViews.next() ) {
      baseDate = baseDate.addDays( baseDate.daysInMonth () - baseDate.day() +1 );
      n->setBaseDate( baseDate, doRepaint );
      doRepaint = true;
  }
}

void DateNavigatorContainer::resizeEvent( QResizeEvent * e )
{
#if 0
  kdDebug(5850) << "DateNavigatorContainer::resizeEvent()" << endl;
  kdDebug(5850) << "  CURRENT SIZE: " << size() << endl;
  kdDebug(5850) << "  MINIMUM SIZEHINT: " << minimumSizeHint() << endl;
  kdDebug(5850) << "  SIZEHINT: " << sizeHint() << endl;
  kdDebug(5850) << "  MINIMUM SIZE: " << minimumSize() << endl;
#endif
  //QSize minSize = mNavigatorView->sizeHintTwoButtons();
  QSize minSize = mNavigatorView->yourSizeHint();

//  kdDebug(5850) << "  NAVIGATORVIEW minimumSizeHint: " << minSize << endl;

  int verticalCount = size().height() / minSize.height();
  int horizontalCount = size().width() / minSize.width();
  //qDebug(" wattdatt %d new %d %d ", size().width() ,e->size().width() , minSize.width() );  
  //qDebug("COUNT %d %d %d %d ", verticalCount, horizontalCount , mVerticalCount, mHorizontalCount );
  bool fontchange = false;  
  QFont fo;
  if ( horizontalCount != mHorizontalCount ||
       verticalCount != mVerticalCount ) {
    uint count = horizontalCount * verticalCount;
    if ( count == 0 ) {
        bool ok;
        fo = mNavigatorView->yourFontHint( size() , &ok);
        //mNavigatorView->resize( size() );
        //if ( ! ok )
        //  return;
        minSize = mNavigatorView->sizeHintTwoButtons();  
        verticalCount = size().height() / minSize.height();
        horizontalCount = size().width() / minSize.width();
        if ( horizontalCount == 0 )
            horizontalCount = 1;
        if ( verticalCount == 0 )
            verticalCount = 1;
        fontchange = true;
        count = horizontalCount * verticalCount;
    } else {
        if ( mNavigatorView->fontChanged() ) {
            fontchange = true;
            fo = KOPrefs::instance()->mDateNavigatorFont;
            mNavigatorView->changeFont( fo );
            mNavigatorView->unsetFontChanged();
        }
    }

    while ( count > ( mExtraViews.count() + 1 ) ) {
      KDateNavigator *n = new KDateNavigator( this );
      n->setMonthSignalOffset ( mExtraViews.count()+1 );
      mExtraViews.append( n );
      n->setCalendar( mCalendar );
      setBaseDates();
      connectNavigatorView( n );
      n->show();
    }
    int iii = 0;
    while ( iii < ( mExtraViews.count()  ) ) {
        if ( iii < count-1 )
            mExtraViews.at( iii )->show();
        else
            mExtraViews.at( iii )->hide();
        ++iii;
    }
    if ( fontchange ) {
        //mNavigatorView->changeFont( fo );
        uint i;
        for( i = 0; i < mExtraViews.count(); ++i ) {
            KDateNavigator *view = mExtraViews.at( i );
            view->changeFont( fo );
        }
    }
    mHorizontalCount = horizontalCount;
    mVerticalCount = verticalCount;
  }
  int height = size().height() / verticalCount;
  int width = size().width() / horizontalCount;

  NavigatorBar *bar = mNavigatorView->navigatorBar();
  if ( horizontalCount > 1 ) bar->showButtons( true, false );
  else bar->showButtons( true, true );

  mNavigatorView->setGeometry(0,
      0, width, height );
  for( uint i = 0; i < mExtraViews.count(); ++i ) {
    int x = ( i + 1 ) % horizontalCount;
    int y = ( i + 1 ) / horizontalCount;

    KDateNavigator *view = mExtraViews.at( i );
    bar = view->navigatorBar();
    if ( y > 0 ) bar->showButtons( false, false );
    else {
        if ( x + 1 == horizontalCount ) bar->showButtons( false, true );
        else bar->showButtons( false, false );
    }
    view->setGeometry( x * width,
        y * height, width, height );
  }
}

QSize DateNavigatorContainer::minimumSizeHint() const
{
  return mNavigatorView->minimumSizeHint();
}

QSize DateNavigatorContainer::sizeHint() const
{
  return mNavigatorView->sizeHint();
}