/*
    Copyright (C) 2010 Klarälvdalens Datakonsult AB,
        a KDAB Group company, info@kdab.net,

    author Bertjan Broeksema <broeksema@kde.org>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include "kcolumnfilterproxymodel.h"

#include <QtCore/QVector>

using namespace Future;

namespace Future {
  struct KColumnFilterProxyModelPrivate
  {
    QVector<int> m_visibleColumns;
  };
}

KColumnFilterProxyModel::KColumnFilterProxyModel( QObject* parent )
  : QSortFilterProxyModel( parent )
  , d_ptr( new KColumnFilterProxyModelPrivate )
{ }

KColumnFilterProxyModel::~KColumnFilterProxyModel()
{
  delete d_ptr;
}

QVector<int> KColumnFilterProxyModel::visbileColumns() const
{
  Q_D( const KColumnFilterProxyModel );
  return d->m_visibleColumns;
}

void KColumnFilterProxyModel::setVisibleColumn( int column )
{
  setVisibleColumns( QVector<int>() << column );
}

void KColumnFilterProxyModel::setVisibleColumns( const QVector<int> &visibleColumns )
{
  Q_D( KColumnFilterProxyModel );
  d->m_visibleColumns = visibleColumns;
  invalidateFilter();
}

bool KColumnFilterProxyModel::filterAcceptsColumn( int column, const QModelIndex &parent ) const
{
  Q_D( const KColumnFilterProxyModel );

  if ( !d->m_visibleColumns.isEmpty() && !d->m_visibleColumns.contains( column ) ) {
    // We only filter columns out when m_visibleColumns actually contains values.
    return false;
  }
 
  return QSortFilterProxyModel::filterAcceptsColumn( column, parent );
}

