/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtGui>

#include "mysortfilterproxymodel.h"

//! [0]
MySortFilterProxyModel::MySortFilterProxyModel(QObject *parent)
    : QSortFilterProxyModel(parent)
{
}
//! [0]

//! [1]
void MySortFilterProxyModel::setFilterMinimumDate(const QDate &date)
{
    minDate = date;
    invalidateFilter();
}
//! [1]

//! [2]
void MySortFilterProxyModel::setFilterMaximumDate(const QDate &date)
{
    maxDate = date;
    invalidateFilter();
}
//! [2]

//! [3]
bool MySortFilterProxyModel::filterAcceptsRow(int sourceRow,
        const QModelIndex &sourceParent) const
{
    QModelIndex index0 = sourceModel()->index(sourceRow, 0, sourceParent);
    QModelIndex index1 = sourceModel()->index(sourceRow, 1, sourceParent);
    QModelIndex index2 = sourceModel()->index(sourceRow, 2, sourceParent);

    return (sourceModel()->data(index0).toString().contains(filterRegExp())
            || sourceModel()->data(index1).toString().contains(filterRegExp()))
           && dateInRange(sourceModel()->data(index2).toDate());
}
//! [3]

//! [4] //! [5]
bool MySortFilterProxyModel::lessThan(const QModelIndex &left,
                                      const QModelIndex &right) const
{
    QVariant leftData = sourceModel()->data(left);
    QVariant rightData = sourceModel()->data(right);
//! [4]

//! [6]
    if (leftData.type() == QVariant::DateTime) {
        return leftData.toDateTime() < rightData.toDateTime();
    } else {
        QRegExp *emailPattern = new QRegExp("([\\w\\.]*@[\\w\\.]*)");

        QString leftString = leftData.toString();
        if(left.column() == 1 && emailPattern->indexIn(leftString) != -1)
            leftString = emailPattern->cap(1);

        QString rightString = rightData.toString();
        if(right.column() == 1 && emailPattern->indexIn(rightString) != -1)
            rightString = emailPattern->cap(1);

        return QString::localeAwareCompare(leftString, rightString) < 0;
    }
}
//! [5] //! [6]

//! [7]
bool MySortFilterProxyModel::dateInRange(const QDate &date) const
{
    return (!minDate.isValid() || date > minDate)
           && (!maxDate.isValid() || date < maxDate);
}
//! [7]
