/* Copyright 2009 James Bendig <james@imptalk.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) version 3 or any later version
   accepted by the membership of KDE e.V. (or its successor approved
   by the membership of KDE e.V.), which shall act as a proxy
   defined in Section 14 of version 3 of the license.

   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, see <http://www.gnu.org/licenses/>.
*/
#include "aggregationcombobox.h"
#include "messagelist/utils/aggregationcombobox.h"
#include "messagelist/utils/aggregationcombobox_p.h"

#include "messagelist/core/aggregation.h"
#include "messagelist/core/manager.h"
#include "messagelist/core/configprovider.h"

#include <KDE/KGlobal>

using namespace MessageList::Core;
using namespace MessageList::Utils;

AggregationComboBox::AggregationComboBox( QWidget * parent )
: KComboBox( parent ), d( new AggregationComboBoxPrivate( this ) )
{
  d->slotLoadAggregations();
}

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

QString AggregationComboBox::currentAggregation() const
{
  return itemData( currentIndex() ).toString();
}

void AggregationComboBox::writeDefaultConfig() const
{
  KConfigGroup group( ConfigProvider::self()->config(), "MessageListView::StorageModelAggregations" );

  const QString aggregationID = currentAggregation();
  group.writeEntry( QLatin1String( "DefaultSet" ), aggregationID );

  Manager::instance()->aggregationsConfigurationCompleted();
}

void AggregationComboBox::writeStorageModelConfig( StorageModel *storageModel, bool isPrivateSetting ) const
{
  // message list aggregation
  QString aggregationID;
  if ( isPrivateSetting ) {
    aggregationID = currentAggregation();
  } else { // explicitly use default aggregation id when using default aggregation.
    aggregationID = Manager::instance()->defaultAggregation()->id();
  }
  Manager::instance()->saveAggregationForStorageModel( storageModel, aggregationID, isPrivateSetting );
  Manager::instance()->aggregationsConfigurationCompleted();
}

void AggregationComboBox::readStorageModelConfig( StorageModel *storageModel, bool &isPrivateSetting )
{
  const Aggregation *aggregation = Manager::instance()->aggregationForStorageModel( storageModel, &isPrivateSetting );
  d->setCurrentAggregation( aggregation );
}

void AggregationComboBox::selectDefault()
{
  const Aggregation *defaultAggregation = Manager::instance()->defaultAggregation();
  d->setCurrentAggregation( defaultAggregation );
}

static bool aggregationNameLessThan( const Aggregation * lhs, const Aggregation * rhs )
{
  return lhs->name() < rhs->name();
}

void AggregationComboBoxPrivate::slotLoadAggregations()
{
  q->clear();

  // Get all message list aggregations and sort them into alphabetical order.
  QList< Aggregation * > aggregations = Manager::instance()->aggregations().values();
  qSort( aggregations.begin(), aggregations.end(), aggregationNameLessThan );

  foreach( const Aggregation * aggregation, aggregations )
  {
    q->addItem( aggregation->name(), QVariant( aggregation->id() ) );
  }
}

void AggregationComboBoxPrivate::setCurrentAggregation( const Aggregation *aggregation )
{
  Q_ASSERT( aggregation != 0 );

  const QString aggregationID = aggregation->id();
  const int aggregationIndex = q->findData( QVariant( aggregationID ) );
  q->setCurrentIndex( aggregationIndex );
}

#include "aggregationcombobox.moc"
