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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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "randomsortmodel.h"
#include <QRandomGenerator>
RandomSortModel::RandomSortModel(QObject* parent):
QAbstractListModel(parent)
{
for (int i = 0; i < 10; ++i) {
mData.append(qMakePair(QString::fromLatin1("Item %1").arg(i), i * 10));
}
}
QHash<int, QByteArray> RandomSortModel::roleNames() const
{
QHash<int,QByteArray> roles = QAbstractItemModel::roleNames();
roles[Qt::UserRole] = "SortRole";
return roles;
}
int RandomSortModel::rowCount(const QModelIndex& parent) const
{
if (!parent.isValid())
return mData.count();
return 0;
}
QVariant RandomSortModel::data(const QModelIndex& index, int role) const
{
if (!index.isValid()) {
return QVariant();
}
if (index.row() >= mData.count()) {
return QVariant();
}
if (role == Qt::DisplayRole) {
return QString::fromLatin1("%1 (weight %2)").arg(mData[index.row()].first).arg(mData[index.row()].second);
} else if (role == Qt::UserRole) {
return mData[index.row()].second;
}
return QVariant();
}
void RandomSortModel::randomize()
{
const int row = QRandomGenerator::bounded(mData.count());
int random;
bool exists = false;
// Make sure we won't end up with two items with the same weight, as that
// would make unit-testing much harder
do {
exists = false;
random = QRandomGenerator::bounded(mData.count() * 10);
QList<QPair<QString, int> >::ConstIterator iter, end;
for (iter = mData.constBegin(), end = mData.constEnd(); iter != end; ++iter) {
if ((*iter).second == random) {
exists = true;
break;
}
}
} while (exists);
mData[row].second = random;
Q_EMIT dataChanged(index(row, 0), index(row, 0));
}
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