File indexing completed on 2024-05-19 04:49:50

 /****************************************************************************************
  * Copyright (c) 2007 Ian Monroe <ian@monroe.nu>                                        *
  * Copyright (c) 2008 Soren Harward <stharward@gmail.com>                               *
  * Copyright (c) 2009 Téo Mrnjavac <teo@kde.org>                                        *
  *                                                                                      *
  * 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) version 3 or        *
  * any later version accepted by the membership of KDE e.V. (or its successor approved  *
  * by the membership of KDE e.V.), which shall act as a proxy defined in Section 14 of  *
  * version 3 of the license.                                                            *
  *                                                                                      *
  * 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, see <http://www.gnu.org/licenses/>.                           *
  ****************************************************************************************/
 
 #include "TrackNavigator.h"
 
 #include "amarokconfig.h"
 #include "core/meta/Meta.h"
 #include "core/support/Amarok.h"
 #include "core/support/Debug.h"
 #include "playlist/PlaylistModelStack.h"
 
 #include <QQueue>
 
 Playlist::TrackNavigator::TrackNavigator()
 {
     m_model = The::playlist();
 
     // Connect to the QAbstractItemModel signals of the source model.
     //   Ignore SIGNAL dataChanged: we don't need to know when a playlist item changes.
     //   Ignore SIGNAL layoutChanged: we don't need to know when rows are moved around.
     connect( m_model->qaim(), &QAbstractItemModel::modelReset, this, &TrackNavigator::slotModelReset );
     connect( Playlist::ModelStack::instance()->bottom(), &Playlist::Model::rowsAboutToBeRemoved,
              this, &TrackNavigator::slotRowsAboutToBeRemoved );
     //   Ignore SIGNAL rowsInserted.
 }
 
 void
 Playlist::TrackNavigator::queueIds( const QList<quint64> &ids )
 {
     foreach( quint64 id, ids )
     {
         if( !m_queue.contains( id ) )
             m_queue.enqueue( id );
     }
 }
 
 void
 Playlist::TrackNavigator::dequeueId( const quint64 id )
 {
     m_queue.removeAll( id );
 }
 
 bool
 Playlist::TrackNavigator::queueMoveUp( const quint64 id )
 {
     const int idx = m_queue.indexOf( id );
     if ( idx < 1 )
         return false;
     quint64 temp = m_queue[ idx - 1 ];
     m_queue[ idx - 1 ] = m_queue[ idx ];
     m_queue[ idx ] = temp;
     return true;
 }
 
 bool
 Playlist::TrackNavigator::queueMoveDown( const quint64 id )
 {
     const int idx = m_queue.indexOf( id );
     if ( idx == -1 || idx == m_queue.count() - 1 )
         return false;
     quint64 temp = m_queue[ idx + 1 ];
     m_queue[ idx + 1 ] = m_queue[ idx ];
     m_queue[ idx ] = temp;
     return true;
 }
 
 int
 Playlist::TrackNavigator::queuePosition( const quint64 id ) const
 {
     return m_queue.indexOf( id );
 }
 
 QQueue<quint64> Playlist::TrackNavigator::queue()
 {
     return m_queue;
 }
 
 void
 Playlist::TrackNavigator::slotModelReset()
 {
     DEBUG_BLOCK
     m_queue.clear();    // We should check 'm_model's new contents, but this is unlikely to bother anyone.
 }
 
 void
 Playlist::TrackNavigator::slotRowsAboutToBeRemoved(const QModelIndex& parent, int start, int end)
 {
     Q_UNUSED( parent );
 
     for ( int row = start; row <= end; ++row )
     {
         const quint64 itemId = Playlist::ModelStack::instance()->bottom()->idAt( row );
         m_queue.removeAll( itemId );
     }
 }
 
 quint64
 Playlist::TrackNavigator::bestFallbackItem()
 {
     quint64 item = m_model->activeId();
 
     if ( !item )
         if ( m_model->qaim()->rowCount() > 0 )
             item = m_model->idAt( 0 );
 
     return item;
 }