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Diffstat (limited to 'demos/player/playlistmodel.cpp')
| -rw-r--r-- | demos/player/playlistmodel.cpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/demos/player/playlistmodel.cpp b/demos/player/playlistmodel.cpp new file mode 100644 index 000000000..21bc4ccf4 --- /dev/null +++ b/demos/player/playlistmodel.cpp @@ -0,0 +1,159 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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)); +} + + |