1/****************************************************************************
2**
3** Copyright (C) 2017 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the examples of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:BSD$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** BSD License Usage
18** Alternatively, you may use this file under the terms of the BSD license
19** as follows:
20**
21** "Redistribution and use in source and binary forms, with or without
22** modification, are permitted provided that the following conditions are
23** met:
24** * Redistributions of source code must retain the above copyright
25** notice, this list of conditions and the following disclaimer.
26** * Redistributions in binary form must reproduce the above copyright
27** notice, this list of conditions and the following disclaimer in
28** the documentation and/or other materials provided with the
29** distribution.
30** * Neither the name of The Qt Company Ltd nor the names of its
31** contributors may be used to endorse or promote products derived
32** from this software without specific prior written permission.
33**
34**
35** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
36** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
37** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
38** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
39** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
42** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
43** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
44** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
45** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
46**
47** $QT_END_LICENSE$
48**
49****************************************************************************/
50
51#ifndef PLAYLISTMODEL_H
52#define PLAYLISTMODEL_H
53
54#include <QAbstractItemModel>
55#include <QScopedPointer>
56
57QT_BEGIN_NAMESPACE
58class QMediaPlaylist;
59QT_END_NAMESPACE
60
61class PlaylistModel : public QAbstractItemModel
62{
63 Q_OBJECT
64
65public:
66 enum Column
67 {
68 Title = 0,
69 ColumnCount
70 };
71
72 explicit PlaylistModel(QObject *parent = nullptr);
73 ~PlaylistModel();
74
75 int rowCount(const QModelIndex &parent = QModelIndex()) const override;
76 int columnCount(const QModelIndex &parent = QModelIndex()) const override;
77
78 QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override;
79 QModelIndex parent(const QModelIndex &child) const override;
80
81 QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
82
83 QMediaPlaylist *playlist() const;
84 void setPlaylist(QMediaPlaylist *playlist);
85
86 bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::DisplayRole) override;
87
88private slots:
89 void beginInsertItems(int start, int end);
90 void endInsertItems();
91 void beginRemoveItems(int start, int end);
92 void endRemoveItems();
93 void changeItems(int start, int end);
94
95private:
96 QScopedPointer<QMediaPlaylist> m_playlist;
97 QMap<QModelIndex, QVariant> m_data;
98};
99
100#endif // PLAYLISTMODEL_H
101

source code of qtmultimedia/examples/multimediawidgets/player/playlistmodel.h