/*
    Copyright (c) 2006 - 2007 Volker Krause <vkrause@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.
*/

#include "transportcombobox.h"
#include "transport.h"
#include "transportmanager.h"

#include <KDebug>

using namespace MailTransport;

/**
 * Private class that helps to provide binary compatibility between releases.
 * @internal
 */
class TransportComboBoxPrivate
{
  public:
    QList<int> transports;
};

TransportComboBox::TransportComboBox( QWidget *parent )
  : KComboBox( parent ), d( new TransportComboBoxPrivate )
{
  QMetaObject::invokeMethod(this, "updateComboboxList");
  connect( TransportManager::self(), SIGNAL(transportsChanged()),
           SLOT(updateComboboxList()) );
}

TransportComboBox::~TransportComboBox()
{
   delete d;
}

int TransportComboBox::currentTransportId() const
{
  if ( currentIndex() >= 0 && currentIndex() < d->transports.count() ) {
    return d->transports.at( currentIndex() );
  }
  return -1;
}

void TransportComboBox::setCurrentTransport( int transportId )
{
  const int i = d->transports.indexOf( transportId );
  if ( i >= 0 && i < count() ) {
    setCurrentIndex( i );
  }
}

TransportBase::EnumType::type TransportComboBox::transportType() const
{
  int transtype = TransportManager::self()->transportById( currentTransportId() )->type();
  return static_cast<TransportBase::EnumType::type>( transtype );
}

void TransportComboBox::updateComboboxList()
{
  fillComboBox();
}

void TransportComboBox::fillComboBox()
{
  const int oldTransport = currentTransportId();
  clear();

  int defaultId = 0;
  if ( !TransportManager::self()->isEmpty() ) {
    const QStringList listNames = TransportManager::self()->transportNames();
    const QList<int> listIds = TransportManager::self()->transportIds();
    addItems( listNames );
    setTransportList(listIds);
    defaultId = TransportManager::self()->defaultTransportId();
  }

  if ( oldTransport != -1 ) {
    setCurrentTransport( oldTransport );
  } else {
    setCurrentTransport( defaultId );
  }
}

void TransportComboBox::setTransportList(const QList<int> &transportList)
{
  d->transports = transportList;
}