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50
51#include "playlistmodel.h"
52
53#include <QFileInfo>
54#include <QUrl>
55#include <QMediaPlaylist>
56
57PlaylistModel::PlaylistModel(QObject *parent)
58 : QAbstractItemModel(parent)
59{
60}
61
62PlaylistModel::~PlaylistModel()
63{
64}
65
66int PlaylistModel::rowCount(const QModelIndex &parent) const
67{
68 return m_playlist && !parent.isValid() ? m_playlist->mediaCount() : 0;
69}
70
71int PlaylistModel::columnCount(const QModelIndex &parent) const
72{
73 return !parent.isValid() ? ColumnCount : 0;
74}
75
76QModelIndex PlaylistModel::index(int row, int column, const QModelIndex &parent) const
77{
78 return m_playlist && !parent.isValid()
79 && row >= 0 && row < m_playlist->mediaCount()
80 && column >= 0 && column < ColumnCount
81 ? createIndex(arow: row, acolumn: column)
82 : QModelIndex();
83}
84
85QModelIndex PlaylistModel::parent(const QModelIndex &child) const
86{
87 Q_UNUSED(child);
88
89 return QModelIndex();
90}
91
92QVariant PlaylistModel::data(const QModelIndex &index, int role) const
93{
94 if (index.isValid() && role == Qt::DisplayRole) {
95 QVariant value = m_data[index];
96 if (!value.isValid() && index.column() == Title) {
97 QUrl location = m_playlist->media(index: index.row()).request().url();
98 return QFileInfo(location.path()).fileName();
99 }
100
101 return value;
102 }
103 return QVariant();
104}
105
106QMediaPlaylist *PlaylistModel::playlist() const
107{
108 return m_playlist.data();
109}
110
111void PlaylistModel::setPlaylist(QMediaPlaylist *playlist)
112{
113 if (m_playlist) {
114 disconnect(sender: m_playlist.data(), signal: &QMediaPlaylist::mediaAboutToBeInserted, receiver: this, slot: &PlaylistModel::beginInsertItems);
115 disconnect(sender: m_playlist.data(), signal: &QMediaPlaylist::mediaInserted, receiver: this, slot: &PlaylistModel::endInsertItems);
116 disconnect(sender: m_playlist.data(), signal: &QMediaPlaylist::mediaAboutToBeRemoved, receiver: this, slot: &PlaylistModel::beginRemoveItems);
117 disconnect(sender: m_playlist.data(), signal: &QMediaPlaylist::mediaRemoved, receiver: this, slot: &PlaylistModel::endRemoveItems);
118 disconnect(sender: m_playlist.data(), signal: &QMediaPlaylist::mediaChanged, receiver: this, slot: &PlaylistModel::changeItems);
119 }
120
121 beginResetModel();
122 m_playlist.reset(other: playlist);
123
124 if (m_playlist) {
125 connect(sender: m_playlist.data(), signal: &QMediaPlaylist::mediaAboutToBeInserted, receiver: this, slot: &PlaylistModel::beginInsertItems);
126 connect(sender: m_playlist.data(), signal: &QMediaPlaylist::mediaInserted, receiver: this, slot: &PlaylistModel::endInsertItems);
127 connect(sender: m_playlist.data(), signal: &QMediaPlaylist::mediaAboutToBeRemoved, receiver: this, slot: &PlaylistModel::beginRemoveItems);
128 connect(sender: m_playlist.data(), signal: &QMediaPlaylist::mediaRemoved, receiver: this, slot: &PlaylistModel::endRemoveItems);
129 connect(sender: m_playlist.data(), signal: &QMediaPlaylist::mediaChanged, receiver: this, slot: &PlaylistModel::changeItems);
130 }
131
132 endResetModel();
133}
134
135bool PlaylistModel::setData(const QModelIndex &index, const QVariant &value, int role)
136{
137 Q_UNUSED(role);
138 m_data[index] = value;
139 emit dataChanged(topLeft: index, bottomRight: index);
140 return true;
141}
142
143void PlaylistModel::beginInsertItems(int start, int end)
144{
145 m_data.clear();
146 beginInsertRows(parent: QModelIndex(), first: start, last: end);
147}
148
149void PlaylistModel::endInsertItems()
150{
151 endInsertRows();
152}
153
154void PlaylistModel::beginRemoveItems(int start, int end)
155{
156 m_data.clear();
157 beginRemoveRows(parent: QModelIndex(), first: start, last: end);
158}
159
160void PlaylistModel::endRemoveItems()
161{
162 endInsertRows();
163}
164
165void PlaylistModel::changeItems(int start, int end)
166{
167 m_data.clear();
168 emit dataChanged(topLeft: index(row: start,column: 0), bottomRight: index(row: end,column: ColumnCount));
169}
170

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