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Viewing changes to src/libtomahawk/playlist/RecentlyPlayedModel.cpp

  • Committer: Package Import Robot
  • Author(s): Harald Sitter
  • Date: 2013-03-07 21:50:13 UTC
  • Revision ID: package-import@ubuntu.com-20130307215013-6gdjkdds7i9uenvs
Tags: upstream-0.6.0+dfsg
Import upstream version 0.6.0+dfsg

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src/libtomahawk/playlist/RecentlyPlayedModel.cpp
 
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/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
 
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 *
 
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 *   Copyright 2010-2012, Christian Muehlhaeuser <muesli@tomahawk-player.org>
 
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 *
 
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 *   Tomahawk is free software: you can redistribute it and/or modify
 
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 *   it under the terms of the GNU General Public License as published by
 
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 *   the Free Software Foundation, either version 3 of the License, or
 
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 *   (at your option) any later version.
 
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 *
 
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 *   Tomahawk is distributed in the hope that it will be useful,
 
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 
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 *   GNU General Public License for more details.
 
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 *
 
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 *   You should have received a copy of the GNU General Public License
 
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 *   along with Tomahawk. If not, see <http://www.gnu.org/licenses/>.
 
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 */
 
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#include "RecentlyPlayedModel.h"
 
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#include <QMimeData>
 
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#include <QTreeView>
 
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#include "Source.h"
 
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#include "SourceList.h"
 
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#include "database/Database.h"
 
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#include "database/DatabaseCommand_PlaybackHistory.h"
 
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#include "PlayableItem.h"
 
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#include "utils/TomahawkUtils.h"
 
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#include "utils/Logger.h"
 
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#define HISTORY_TRACK_ITEMS 25
 
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using namespace Tomahawk;
 
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RecentlyPlayedModel::RecentlyPlayedModel( QObject* parent )
 
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    : PlaylistModel( parent )
 
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    , m_limit( HISTORY_TRACK_ITEMS )
 
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{
 
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}
 
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RecentlyPlayedModel::~RecentlyPlayedModel()
 
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{
 
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}
 
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void
 
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RecentlyPlayedModel::loadHistory()
 
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{
 
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    if ( rowCount( QModelIndex() ) )
 
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    {
 
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        clear();
 
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    }
 
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    startLoading();
 
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    DatabaseCommand_PlaybackHistory* cmd = new DatabaseCommand_PlaybackHistory( m_source );
 
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    cmd->setLimit( m_limit );
 
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    connect( cmd, SIGNAL( tracks( QList<Tomahawk::query_ptr> ) ),
 
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                    SLOT( appendQueries( QList<Tomahawk::query_ptr> ) ), Qt::QueuedConnection );
 
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    Database::instance()->enqueue( QSharedPointer<DatabaseCommand>( cmd ) );
 
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}
 
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void
 
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RecentlyPlayedModel::onSourcesReady()
 
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{
 
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    Q_ASSERT( m_source.isNull() );
 
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    loadHistory();
 
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    foreach ( const source_ptr& source, SourceList::instance()->sources() )
 
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        onSourceAdded( source );
 
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}
 
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void
 
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RecentlyPlayedModel::setSource( const Tomahawk::source_ptr& source )
 
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{
 
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    m_source = source;
 
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    if ( source.isNull() )
 
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    {
 
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        if ( SourceList::instance()->isReady() )
 
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            onSourcesReady();
 
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        else
 
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            connect( SourceList::instance(), SIGNAL( ready() ), SLOT( onSourcesReady() ) );
 
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        connect( SourceList::instance(), SIGNAL( sourceAdded( Tomahawk::source_ptr ) ), SLOT( onSourceAdded( Tomahawk::source_ptr ) ) );
 
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    }
 
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    else
 
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    {
 
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        onSourceAdded( source );
 
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        loadHistory();
 
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    }
 
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}
 
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void
 
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RecentlyPlayedModel::onSourceAdded( const Tomahawk::source_ptr& source )
 
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{
 
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    connect( source.data(), SIGNAL( playbackFinished( Tomahawk::query_ptr ) ), SLOT( onPlaybackFinished( Tomahawk::query_ptr ) ), Qt::UniqueConnection );
 
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}
 
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void
 
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RecentlyPlayedModel::onPlaybackFinished( const Tomahawk::query_ptr& query )
 
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{
 
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    int count = trackCount();
 
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    unsigned int playtime = query->playedBy().second;
 
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    if ( count )
 
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    {
 
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        PlayableItem* oldestItem = itemFromIndex( index( count - 1, 0, QModelIndex() ) );
 
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        if ( oldestItem->query()->playedBy().second >= playtime )
 
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            return;
 
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        PlayableItem* youngestItem = itemFromIndex( index( 0, 0, QModelIndex() ) );
 
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        if ( youngestItem->query()->playedBy().second <= playtime )
 
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            insertQuery( query, 0 );
 
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        else
 
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        {
 
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            for ( int i = 0; i < count - 1; i++ )
 
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            {
 
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                PlayableItem* item1 = itemFromIndex( index( i, 0, QModelIndex() ) );
 
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                PlayableItem* item2 = itemFromIndex( index( i + 1, 0, QModelIndex() ) );
 
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                if ( item1->query()->playedBy().second >= playtime && item2->query()->playedBy().second <= playtime )
 
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                {
 
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                    insertQuery( query, i + 1 );
 
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                    break;
 
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                }
 
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            }
 
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        }
 
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    }
 
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    else
 
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        insertQuery( query, 0 );
 
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    if ( trackCount() > (int)m_limit )
 
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        remove( m_limit );
 
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    ensureResolved();
 
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}
 
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bool
 
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RecentlyPlayedModel::isTemporary() const
 
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{
 
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    return true;
 
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}