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mysortfilterproxymodel.cpp Example File
itemviews/customsortfiltermodel/mysortfilterproxymodel.cpp

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    ** Copyright (C) 2006-2006 Trolltech ASA. All rights reserved.
    **
    ** This file is part of the example classes of the Qt Toolkit.
    **
    ** This file may be used under the terms of the GNU General Public
    ** License version 2.0 as published by the Free Software Foundation
    ** and appearing in the file LICENSE.GPL included in the packaging of
    ** this file.  Please review the following information to ensure GNU
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    ** review the following information:
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    #include <QtGui>

    #include "mysortfilterproxymodel.h"

    MySortFilterProxyModel::MySortFilterProxyModel(QObject *parent)
        : QSortFilterProxyModel(parent)
    {
    }

    void MySortFilterProxyModel::setFilterMinimumDate(const QDate &date)
    {
        minDate = date;
        clear();
    }

    void MySortFilterProxyModel::setFilterMaximumDate(const QDate &date)
    {
        maxDate = date;
        clear();
    }

    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());
    }

    bool MySortFilterProxyModel::lessThan(const QModelIndex &left,
                                          const QModelIndex &right) const
    {
        QVariant leftData = sourceModel()->data(left);
        QVariant rightData = sourceModel()->data(right);

        if (leftData.type() == QVariant::DateTime) {
            return leftData.toDateTime() < rightData.toDateTime();
        } else {
            return QString::localeAwareCompare(leftData.toString(),
                                               rightData.toString()) < 0;
        }
    }

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


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Qt 4.2.0-snapshot-20060701