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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef PatternistSDK_TreeSortFilter_H
#define PatternistSDK_TreeSortFilter_H
#include <QSortFilterProxyModel>
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
#endif
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