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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite 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.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef PatternistSDK_TreeSortFilter_H
#define PatternistSDK_TreeSortFilter_H
#include <QSortFilterProxyModel>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
namespace QPatternistSDK
{
/**
* @short A sort & filter model for hierarchical item models.
*
* Features:
* - When sorting, numbers are treated as a whole instead of on a
* character-per-character basis. For example, @c myFile-10 is sorted after @c myFile-9.
* - When filtering, it behaves as usually is expected when the item model is hierarchical. That is,
* an item is shown if it matches or any of its children matches.
*
* @image html TreeSortFilter.png "TreeSortFilter in action on a QTreeView."
*
* @ingroup PatternistSDK
* @author Frans Englich <frans.englich@nokia.com>
*/
class TreeSortFilter : public QSortFilterProxyModel
{
public:
/**
* Creates a TreeSortFilter.
*
* @param parent the parent. Must not be @c null.
*/
TreeSortFilter(QObject *parent);
protected:
/**
* Compares @p left and @p right. They are treated as QStrings.
*/
virtual bool lessThan(const QModelIndex &left, const QModelIndex &right) const;
/**
* Overridden to implement filtering.
*/
virtual bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const;
private:
inline bool numericLessThan(const QString &l, const QString &r) const;
};
}
QT_END_NAMESPACE
QT_END_HEADER
#endif
// vim: et:ts=4:sw=4:sts=4
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