/*
 * Cantata
 *
 * Copyright (c) 2011-2012 Craig Drummond <craig.p.drummond@gmail.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) any later version.
 *
 * 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; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef PROXYMODEL_H
#define PROXYMODEL_H

#include <QtGui/QSortFilterProxyModel>
// #ifdef ENABLE_KDE_SUPPORT
// #include <KDE/KStringHandler>
// #endif
#include <QtCore/QStringList>
#include "song.h"

class ProxyModel : public QSortFilterProxyModel
{
public:
    ProxyModel(QObject *parent)
        : QSortFilterProxyModel(parent)
        , filterEnabled(false) {
    }
    virtual ~ProxyModel() {
    }

    bool update(const QString &text, const QString &genre=QString());
    void setRootIndex(const QModelIndex &idx) {
        rootIndex=idx.isValid() ? mapToSource(idx) : idx;
    }
    bool isChildOfRoot(const QModelIndex &idx) const;
    bool isEmpty() const {
        return filterGenre.isEmpty() && filterRegExp().isEmpty();
    }

    static int compareStrings(const QString &a, const QString &b) {
//         #ifdef ENABLE_KDE_SUPPORT
//         return KStringHandler::naturalCompare(a, b, Qt::CaseInsensitive) < 0;
//         #else
        return a.localeAwareCompare(b);
//         #endif
    }

    bool enabled() const {
        return filterEnabled;
    }

protected:
    bool matchesFilter(const Song &s) const;
    bool matchesFilter(const QStringList &strings) const;

protected:
    bool filterEnabled;
    QString filterGenre;
    QModelIndex rootIndex;
    QStringList filterStrings;
    uint unmatchedStrings;
};

#endif