/*
  This file is part of KOrganizer.

  Copyright (c) 2000 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.,
  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.
*/

#include "korganizer_part.h"
#include "aboutdata.h"
#include "actionmanager.h"
#include "calendarview.h"
#include "kocore.h"
#include "korganizerifaceimpl.h"

#include <calendarsupport/utils.h>

#include <KCalUtils/IncidenceFormatter>

#include <KStatusBar>
#include <KParts/StatusBarExtension>

#include <QVBoxLayout>

static const KAboutData &createAboutData()
{
  static KOrg::AboutData about;
  return about;
}

K_PLUGIN_FACTORY( KOrganizerFactory, registerPlugin<KOrganizerPart>(); )
K_EXPORT_PLUGIN( KOrganizerFactory( createAboutData() ) )

KOrganizerPart::KOrganizerPart( QWidget *parentWidget, QObject *parent, const QVariantList & )
  : KParts::ReadOnlyPart( parent )
{
  if ( parentWidget ) {
    mTopLevelWidget = parentWidget->topLevelWidget();
  } else if ( parent && parent->isWidgetType() ) {
    mTopLevelWidget = (QWidget *)parent;
  } else {
    kError() << "Cannot initialize the part without a top level widget.";
  }

  KGlobal::locale()->insertCatalog( QLatin1String("libkcalutils") );
  KGlobal::locale()->insertCatalog( QLatin1String("calendarsupport") );
  KGlobal::locale()->insertCatalog( QLatin1String("libkdepim") );
  KGlobal::locale()->insertCatalog( QLatin1String("kdgantt2") );
  KGlobal::locale()->insertCatalog( QLatin1String("libakonadi") );
  KGlobal::locale()->insertCatalog( QLatin1String("libincidenceeditors") );
  KGlobal::locale()->insertCatalog( QLatin1String("libkpimutils") );
  KGlobal::locale()->insertCatalog( QLatin1String("libpimcommon") );

  KOCore::self()->addXMLGUIClient( mTopLevelWidget, this );

  // create a canvas to insert our widget
  QWidget *canvas = new QWidget( parentWidget );
  canvas->setFocusPolicy( Qt::ClickFocus );
  setWidget( canvas );
  mView = new CalendarView( canvas );

  mActionManager = new ActionManager( this, mView, this, this, true );
  (void)new KOrganizerIfaceImpl( mActionManager, this, "IfaceImpl" );

  mActionManager->createCalendarAkonadi();
  setHasDocument( false );

  mStatusBarExtension = new KParts::StatusBarExtension( this );

  setComponentData( KOrganizerFactory::componentData() );

  QVBoxLayout *topLayout = new QVBoxLayout( canvas );
  topLayout->addWidget( mView );
  topLayout->setMargin( 0 );

  connect( mView, SIGNAL(incidenceSelected(Akonadi::Item,QDate)),
           SLOT(slotChangeInfo(Akonadi::Item,QDate)) );

  mActionManager->init();
  mActionManager->readSettings();

  setXMLFile( QLatin1String("korganizer_part.rc"), true );
  mActionManager->loadParts();
  setTitle();
}

KOrganizerPart::~KOrganizerPart()
{
  mActionManager->writeSettings();

  delete mActionManager;
  mActionManager = 0;

  KOCore::self()->removeXMLGUIClient( mTopLevelWidget );
}

void KOrganizerPart::slotChangeInfo( const Akonadi::Item &item, const QDate &date )
{
  Q_UNUSED( date );
  const KCalCore::Incidence::Ptr incidence = CalendarSupport::incidence( item );
  if ( incidence ) {
    emit textChanged( incidence->summary() + QLatin1String(" / ") +
                      KCalUtils::IncidenceFormatter::timeToString( incidence->dtStart() ) );
  } else {
    emit textChanged( QString() );
  }
}

QWidget *KOrganizerPart::topLevelWidget()
{
  return mView->topLevelWidget();
}

ActionManager *KOrganizerPart::actionManager()
{
  return mActionManager;
}

void KOrganizerPart::showStatusMessage( const QString &message )
{
  KStatusBar *statusBar = mStatusBarExtension->statusBar();
  if ( statusBar ) {
    statusBar->showMessage( message );
  }
}

KOrg::CalendarViewBase *KOrganizerPart::view() const
{
  return mView;
}

bool KOrganizerPart::openURL( const KUrl &url, bool merge )
{
  return mActionManager->importURL( url, merge );
}

bool KOrganizerPart::saveURL()
{
  return mActionManager->saveURL();
}

bool KOrganizerPart::saveAsURL( const KUrl &kurl )
{
  return mActionManager->saveAsURL( kurl );
}

KUrl KOrganizerPart::getCurrentURL() const
{
  return mActionManager->url();
}

bool KOrganizerPart::openFile()
{
  mActionManager->importCalendar( localFilePath() );
  return true;
}

// FIXME: This is copied verbatim from the KOrganizer class. Move it to the common base class!
void KOrganizerPart::setTitle()
{
//  kDebug(5850) <<"KOrganizer::setTitle";
// FIXME: Inside kontact we want to have different titles depending on the
//        type of view (calendar, to-do, journal). How can I add the filter
//        name in that case?
/*
  QString title;
  if ( !hasDocument() ) {
    title = i18n("Calendar");
  } else {
    KUrl url = mActionManager->url();

    if ( !url.isEmpty() ) {
      if ( url.isLocalFile() ) title = url.fileName();
      else title = url.prettyUrl();
    } else {
      title = i18n("New Calendar");
    }

    if ( mView->isReadOnly() ) {
      title += " [" + i18n("read-only") + ']';
    }
  }

  title += " - <" + mView->currentFilterName() + "> ";

  emit setWindowCaption( title );*/
}