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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "playlistmodel.h"
#include <QtCore/qfileinfo.h>
#include <QtCore/qurl.h>
#include <qmediaplaylist.h>
PlaylistModel::PlaylistModel(QObject *parent)
: QAbstractItemModel(parent)
, m_playlist(0)
{
}
int PlaylistModel::rowCount(const QModelIndex &parent) const
{
return m_playlist && !parent.isValid() ? m_playlist->mediaCount() : 0;
}
int PlaylistModel::columnCount(const QModelIndex &parent) const
{
return !parent.isValid() ? ColumnCount : 0;
}
QModelIndex PlaylistModel::index(int row, int column, const QModelIndex &parent) const
{
return m_playlist && !parent.isValid()
&& row >= 0 && row < m_playlist->mediaCount()
&& column >= 0 && column < ColumnCount
? createIndex(row, column)
: QModelIndex();
}
QModelIndex PlaylistModel::parent(const QModelIndex &child) const
{
Q_UNUSED(child);
return QModelIndex();
}
QVariant PlaylistModel::data(const QModelIndex &index, int role) const
{
if (index.isValid() && role == Qt::DisplayRole) {
QVariant value = m_data[index];
if (!value.isValid() && index.column() == Title) {
QUrl location = m_playlist->media(index.row()).canonicalUrl();
return QFileInfo(location.path()).fileName();
}
return value;
}
return QVariant();
}
QMediaPlaylist *PlaylistModel::playlist() const
{
return m_playlist;
}
void PlaylistModel::setPlaylist(QMediaPlaylist *playlist)
{
if (m_playlist) {
disconnect(m_playlist, SIGNAL(mediaAboutToBeInserted(int,int)), this, SLOT(beginInsertItems(int,int)));
disconnect(m_playlist, SIGNAL(mediaInserted(int,int)), this, SLOT(endInsertItems()));
disconnect(m_playlist, SIGNAL(mediaAboutToBeRemoved(int,int)), this, SLOT(beginRemoveItems(int,int)));
disconnect(m_playlist, SIGNAL(mediaRemoved(int,int)), this, SLOT(endRemoveItems()));
disconnect(m_playlist, SIGNAL(mediaChanged(int,int)), this, SLOT(changeItems(int,int)));
}
m_playlist = playlist;
if (m_playlist) {
connect(m_playlist, SIGNAL(mediaAboutToBeInserted(int,int)), this, SLOT(beginInsertItems(int,int)));
connect(m_playlist, SIGNAL(mediaInserted(int,int)), this, SLOT(endInsertItems()));
connect(m_playlist, SIGNAL(mediaAboutToBeRemoved(int,int)), this, SLOT(beginRemoveItems(int,int)));
connect(m_playlist, SIGNAL(mediaRemoved(int,int)), this, SLOT(endRemoveItems()));
connect(m_playlist, SIGNAL(mediaChanged(int,int)), this, SLOT(changeItems(int,int)));
}
reset();
}
bool PlaylistModel::setData(const QModelIndex &index, const QVariant &value, int role)
{
Q_UNUSED(role);
m_data[index] = value;
emit dataChanged(index, index);
return true;
}
void PlaylistModel::beginInsertItems(int start, int end)
{
m_data.clear();
beginInsertRows(QModelIndex(), start, end);
}
void PlaylistModel::endInsertItems()
{
endInsertRows();
}
void PlaylistModel::beginRemoveItems(int start, int end)
{
m_data.clear();
beginRemoveRows(QModelIndex(), start, end);
}
void PlaylistModel::endRemoveItems()
{
endInsertRows();
}
void PlaylistModel::changeItems(int start, int end)
{
m_data.clear();
emit dataChanged(index(start,0), index(end,ColumnCount));
}
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