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add new welcomeplaylistmodel

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This commit is contained in:
Leo Franchi 2011-05-02 18:22:40 -04:00
parent 1bde1fe1bb
commit bbbd1a48bb
2 changed files with 213 additions and 0 deletions
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157
src/libtomahawk/widgets/welcomeplaylistmodel.cpp Normal file
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/*
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 2011 Leo Franchi <leo.franchi@kdab.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "welcomeplaylistmodel.h"
#include <tomahawksettings.h>
#include <audio/audioengine.h>
#include <sourcelist.h>
using namespace Tomahawk;
WelcomePlaylistModel::WelcomePlaylistModel( QObject* parent )
: QAbstractListModel( parent )
{
loadFromSettings();
connect( SourceList::instance(), SIGNAL( sourceAdded( Tomahawk::source_ptr ) ), SLOT( loadFromSettings() ), Qt::QueuedConnection );
connect( TomahawkSettings::instance(), SIGNAL( recentlyPlayedPlaylistAdded( Tomahawk::playlist_ptr ) ), this, SLOT( plAdded( Tomahawk::playlist_ptr ) ) );
connect( AudioEngine::instance(),SIGNAL( playlistChanged( PlaylistInterface* ) ), this, SLOT( playlistChanged( PlaylistInterface* ) ), Qt::QueuedConnection );
emit emptinessChanged( m_recplaylists.isEmpty() );
}
void
WelcomePlaylistModel::loadFromSettings()
{
beginResetModel();
m_recplaylists.clear();
QStringList playlist_guids = TomahawkSettings::instance()->recentlyPlayedPlaylistGuids();
for( int i = playlist_guids.size() - 1; i >= 0; i-- )
{
qDebug() << "loading playlist" << playlist_guids[i];
Tomahawk::playlist_ptr pl = Tomahawk::Playlist::load( playlist_guids[i] );
if ( !pl.isNull() )
m_recplaylists << pl;
}
endResetModel();
}
QVariant
WelcomePlaylistModel::data( const QModelIndex& index, int role ) const
{
if( !index.isValid() || !hasIndex( index.row(), index.column(), index.parent() ) )
return QVariant();
playlist_ptr pl = m_recplaylists[index.row()];
switch( role )
{
case Qt::DisplayRole:
return pl->title();
case PlaylistRole:
return QVariant::fromValue< Tomahawk::playlist_ptr >( pl );
case ArtistRole:
{
if( m_artists.value( pl ).isEmpty() )
{
QStringList artists;
foreach( const Tomahawk::plentry_ptr& entry, pl->entries() )
{
if ( !artists.contains( entry->query()->artist() ) )
artists << entry->query()->artist();
}
m_artists[pl] = artists.join( ", " );
}
return m_artists[pl];
}
case TrackCountRole:
return pl->entries().count();
default:
return QVariant();
}
}
void
WelcomePlaylistModel::onSourceAdded( const Tomahawk::source_ptr& source )
{
connect( source->collection().data(), SIGNAL( playlistsDeleted( QList<Tomahawk::playlist_ptr> ) ), SLOT( onPlaylistsRemoved( QList<Tomahawk::playlist_ptr> ) ) );
}
void
WelcomePlaylistModel::onPlaylistsRemoved( QList< playlist_ptr > playlists )
{
foreach( const playlist_ptr& pl, playlists ) {
if( m_recplaylists.contains( pl ) ) {
m_artists.remove( pl );
int idx = m_recplaylists.indexOf( pl );
beginRemoveRows( QModelIndex(), idx, idx );
m_recplaylists.removeAt( idx );
endRemoveRows();
}
}
emit emptinessChanged( m_recplaylists.isEmpty() );
}
int
WelcomePlaylistModel::rowCount( const QModelIndex& ) const
{
return m_recplaylists.count();
}
void
WelcomePlaylistModel::plAdded( const playlist_ptr& pl )
{
onPlaylistsRemoved( QList< playlist_ptr >() << pl );
beginInsertRows( QModelIndex(), 0, 0 );
m_recplaylists.prepend( pl );;
endInsertRows();
emit emptinessChanged( m_recplaylists.isEmpty() );
}
void
WelcomePlaylistModel::playlistChanged( PlaylistInterface* pli )
{
// ARG
if( Playlist* pl = dynamic_cast< Playlist* >( pli ) ) {
// look for it, qsharedpointer fail
playlist_ptr ptr;
foreach( const playlist_ptr& test, m_recplaylists ) {
if( test.data() == pl )
ptr = test;
}
if( !ptr.isNull() && m_artists.contains( ptr ) ) {
m_artists[ ptr ] = QString();
}
QModelIndex idx = index( m_recplaylists.indexOf( ptr ), 0, QModelIndex() );
emit dataChanged( idx, idx );
}
}

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src/libtomahawk/widgets/welcomeplaylistmodel.h Normal file
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/*
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 2011 Leo Franchi <leo.franchi@kdab.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef WELCOMEPLAYLISTMODEL_H
#define WELCOMEPLAYLISTMODEL_H
#include <QModelIndex>
#include "playlist.h"
class WelcomePlaylistModel : public QAbstractListModel
{
Q_OBJECT
public:
enum ItemRoles
{ ArtistRole = Qt::UserRole, TrackCountRole, PlaylistRole };
explicit WelcomePlaylistModel( QObject* parent = 0 );
virtual QVariant data( const QModelIndex& index, int role = Qt::DisplayRole ) const;
virtual int rowCount( const QModelIndex& parent = QModelIndex() ) const;
signals:
void emptinessChanged( bool isEmpty );
private slots:
void playlistChanged( PlaylistInterface* );
void onSourceAdded( const Tomahawk::source_ptr& source );
void onPlaylistsRemoved( QList<Tomahawk::playlist_ptr> );
void loadFromSettings();
void plAdded( const Tomahawk::playlist_ptr& );
private:
QList< Tomahawk::playlist_ptr > m_recplaylists;
mutable QHash< Tomahawk::playlist_ptr, QString > m_artists;
};
#endif // WELCOMEPLAYLISTMODEL_H