| /**************************************************************************** |
| ** |
| ** 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 |
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| ** |
| ** 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. |
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| ** $QT_END_LICENSE$ |
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| ****************************************************************************/ |
| |
| #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(); |
| } |