blob: 7db6c8b20adea8ed4a4f1c4347e2a9ae7b072049 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "incrementalmodel.h"
#include <QApplication>
#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();
}
|
