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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "incrementalmodel.h"
#include <QGuiApplication>
#include <QDebug>
IncrementalModel::IncrementalModel(QObject *parent)
: QAbstractListModel(parent), count(0)
{
for (int i = 0; i < 100; ++i)
list.append("Item " + QString::number(i));
}
int IncrementalModel::rowCount(const QModelIndex & /* parent */) const
{
return count;
}
QVariant IncrementalModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid())
return QVariant();
if (index.row() >= list.size() || index.row() < 0)
return QVariant();
if (role == Qt::DisplayRole)
return list.at(index.row());
return QVariant();
}
bool IncrementalModel::canFetchMore(const QModelIndex & /* index */) const
{
if (count < list.size())
return true;
else
return false;
}
void IncrementalModel::fetchMore(const QModelIndex & /* index */)
{
int remainder = list.size() - count;
int itemsToFetch = qMin(5, remainder);
beginInsertRows(QModelIndex(), count, count+itemsToFetch-1);
count += itemsToFetch;
endInsertRows();
}
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