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182 lines
5.0 KiB
182 lines
5.0 KiB
/***************************************************************************
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begin : Thu Aug 19 2004
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copyright : (C) 2002 - 2004 by Michael Pyne
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email : michael.pyne@kde.org
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***************************************************************************/
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/***************************************************************************
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* *
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* This program 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 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include <tdeconfig.h>
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#include <tdelocale.h>
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#include <tdeaction.h>
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#include <tdepopupmenu.h>
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#include "actioncollection.h"
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#include "tracksequencemanager.h"
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#include "playlist.h"
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#include "playlistitem.h"
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#include "tracksequenceiterator.h"
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#include "tag.h"
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#include "filehandle.h"
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#include "collectionlist.h"
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/////////////////////////////////////////////////////////////////////////////
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// public functions
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/////////////////////////////////////////////////////////////////////////////
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TrackSequenceManager::~TrackSequenceManager()
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{
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// m_playlist and m_popupMenu don't belong to us, don't try to delete them
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if(m_iterator == m_defaultIterator)
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m_iterator = 0;
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delete m_iterator;
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delete m_defaultIterator;
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}
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bool TrackSequenceManager::installIterator(TrackSequenceIterator *iterator)
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{
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PlaylistItem *oldItem = m_iterator ? m_iterator->current() : 0;
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if(m_iterator != m_defaultIterator)
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delete m_iterator;
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m_iterator = m_defaultIterator;
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if(iterator)
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m_iterator = iterator;
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m_iterator->setCurrent(oldItem);
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return true;
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}
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PlaylistItem *TrackSequenceManager::currentItem() const
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{
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return m_iterator->current();
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}
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TrackSequenceIterator *TrackSequenceManager::takeIterator()
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{
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TrackSequenceIterator *temp = m_iterator;
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m_iterator = 0;
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return temp;
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}
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TrackSequenceManager *TrackSequenceManager::instance()
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{
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static TrackSequenceManager manager;
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if(!manager.m_initialized)
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manager.initialize();
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return &manager;
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}
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PlaylistItem *TrackSequenceManager::nextItem()
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{
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if(m_playNextItem) {
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// Force the iterator to reset state (such as random item lists)
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m_iterator->reset();
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m_iterator->setCurrent(m_playNextItem);
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m_playNextItem = 0;
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}
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else if(m_iterator->current())
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m_iterator->advance();
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else if(currentPlaylist())
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m_iterator->prepareToPlay(currentPlaylist());
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else
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m_iterator->prepareToPlay(CollectionList::instance());
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return m_iterator->current();
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}
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PlaylistItem *TrackSequenceManager::previousItem()
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{
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m_iterator->backup();
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return m_iterator->current();
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}
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/////////////////////////////////////////////////////////////////////////////
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// public slots
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/////////////////////////////////////////////////////////////////////////////
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void TrackSequenceManager::setNextItem(PlaylistItem *item)
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{
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m_playNextItem = item;
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}
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void TrackSequenceManager::setCurrentPlaylist(Playlist *list)
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{
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if(m_playlist)
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m_playlist->disconnect(this);
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m_playlist = list;
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connect(m_playlist, TQT_SIGNAL(signalAboutToRemove(PlaylistItem *)),
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this, TQT_SLOT(slotItemAboutToDie(PlaylistItem *)));
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}
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void TrackSequenceManager::setCurrent(PlaylistItem *item)
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{
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if(item != m_iterator->current()) {
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m_iterator->setCurrent(item);
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if(item)
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setCurrentPlaylist(item->playlist());
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else
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m_iterator->reset();
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}
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}
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/////////////////////////////////////////////////////////////////////////////
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// private functions
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/////////////////////////////////////////////////////////////////////////////
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void TrackSequenceManager::initialize()
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{
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CollectionList *collection = CollectionList::instance();
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if(!collection)
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return;
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// Make sure we don't use m_playNextItem if it's invalid.
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connect(collection, TQT_SIGNAL(signalAboutToRemove(PlaylistItem *)),
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this, TQT_SLOT(slotItemAboutToDie(PlaylistItem *)));
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m_initialized = true;
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}
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TrackSequenceManager::TrackSequenceManager() :
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TQObject(),
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m_playlist(0),
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m_playNextItem(0),
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m_popupMenu(0),
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m_iterator(0),
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m_initialized(false)
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{
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m_defaultIterator = new DefaultSequenceIterator();
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m_iterator = m_defaultIterator;
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}
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/////////////////////////////////////////////////////////////////////////////
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// protected slots
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/////////////////////////////////////////////////////////////////////////////
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void TrackSequenceManager::slotItemAboutToDie(PlaylistItem *item)
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{
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if(item == m_playNextItem)
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m_playNextItem = 0;
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m_iterator->itemAboutToDie(item);
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}
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#include "tracksequencemanager.moc"
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