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tdemultimedia/juk/upcomingplaylist.cpp

278 lines
7.6 KiB

/***************************************************************************
begin : Thu Aug 19 2004
copyright : (C) 2002 - 2004 by Michael Pyne
email : michael.pyne@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) any later version. *
* *
***************************************************************************/
#include <kdebug.h>
#include <kapplication.h>
#include <kaction.h>
#include "upcomingplaylist.h"
#include "playlistitem.h"
#include "playlistcollection.h"
#include "tracksequencemanager.h"
#include "collectionlist.h"
#include "actioncollection.h"
using namespace ActionCollection;
UpcomingPlaylist::UpcomingPlaylist(PlaylistCollection *collection, int defaultSize) :
Playlist(collection, true),
m_active(false),
m_oldIterator(0),
m_defaultSize(defaultSize)
{
setName(i18n("Play Queue"));
setAllowDuplicates(true);
setSorting(-1);
}
UpcomingPlaylist::~UpcomingPlaylist()
{
removeIteratorOverride();
}
void UpcomingPlaylist::initialize()
{
// Prevent duplicate initialization.
if(m_active)
return;
m_active = true;
m_oldIterator = manager()->takeIterator();
manager()->installIterator(new UpcomingSequenceIterator(this));
if(!m_oldIterator->current())
m_oldIterator->prepareToPlay(CollectionList::instance());
else
manager()->iterator()->setCurrent(m_oldIterator->current());
}
void UpcomingPlaylist::appendItems(const PlaylistItemList &itemList)
{
initialize();
if(itemList.isEmpty())
return;
PlaylistItem *after = static_cast<PlaylistItem *>(lastItem());
for(PlaylistItemList::ConstIterator it = itemList.begin(); it != itemList.end(); ++it) {
after = createItem(*it, after);
m_playlistIndex.insert(after, (*it)->playlist());
}
dataChanged();
slotWeightDirty();
}
void UpcomingPlaylist::playNext()
{
initialize();
PlaylistItem *next = TrackSequenceManager::instance()->nextItem();
if(next) {
setPlaying(next);
Playlist *source = m_playlistIndex[next];
if(source) {
PlaylistList l;
l.append(this);
source->synchronizePlayingItems(l, false);
}
}
else {
removeIteratorOverride();
// Normally we continue to play the currently playing item that way
// a user can continue to hear their song when deselecting Play Queue.
// However we're technically still "playing" when the queue empties and
// we reinstall the old iterator so in this situation manually advance
// to the next track. (Otherwise we hear the same song twice in a row
// during the transition.
setPlaying(manager()->nextItem());
}
}
void UpcomingPlaylist::clearItem(PlaylistItem *item, bool emitChanged)
{
m_playlistIndex.remove(item);
Playlist::clearItem(item, emitChanged);
}
void UpcomingPlaylist::addFiles(const QStringList &files, PlaylistItem *after)
{
CollectionList::instance()->addFiles(files, after);
PlaylistItemList l;
for(QStringList::ConstIterator it = files.begin(); it != files.end(); ++it) {
FileHandle f(*it);
PlaylistItem *i = CollectionList::instance()->lookup(f.absFilePath());
if(i)
l.append(i);
}
appendItems(l);
}
QMap< PlaylistItem::Pointer, QGuardedPtr<Playlist> > &UpcomingPlaylist::playlistIndex()
{
return m_playlistIndex;
}
void UpcomingPlaylist::removeIteratorOverride()
{
if(!m_active)
return;
m_active = false; // Allow re-initialization.
if(!m_oldIterator)
return;
// Install the old track iterator.
manager()->installIterator(m_oldIterator);
// If we have an item that is currently playing, allow it to keep playing.
// Otherwise, just reset to the default iterator (probably not playing
// anything.)
// XXX: Reset to the last playing playlist?
m_oldIterator->reset();
if(playingItem())
m_oldIterator->setCurrent(playingItem()->collectionItem());
setPlaying(manager()->currentItem(), true);
Watched::currentChanged();
}
TrackSequenceManager *UpcomingPlaylist::manager() const
{
return TrackSequenceManager::instance();
}
UpcomingPlaylist::UpcomingSequenceIterator::UpcomingSequenceIterator(UpcomingPlaylist *playlist) :
TrackSequenceIterator(), m_playlist(playlist)
{
}
UpcomingPlaylist::UpcomingSequenceIterator::UpcomingSequenceIterator(const UpcomingSequenceIterator &other) :
TrackSequenceIterator(other), m_playlist(other.m_playlist)
{
}
UpcomingPlaylist::UpcomingSequenceIterator::~UpcomingSequenceIterator()
{
}
void UpcomingPlaylist::UpcomingSequenceIterator::advance()
{
PlaylistItem *item = m_playlist->firstChild();
if(item) {
PlaylistItem *next = static_cast<PlaylistItem *>(item->nextSibling());
m_playlist->clearItem(item);
setCurrent(next);
}
}
void UpcomingPlaylist::UpcomingSequenceIterator::backup()
{
}
UpcomingPlaylist::UpcomingSequenceIterator *UpcomingPlaylist::UpcomingSequenceIterator::clone() const
{
return new UpcomingSequenceIterator(*this);
}
void UpcomingPlaylist::UpcomingSequenceIterator::setCurrent(PlaylistItem *currentItem)
{
if(!currentItem) {
TrackSequenceIterator::setCurrent(currentItem);
return;
}
// If the upcoming playlist is playing something, clear it out since
// apparently the user didn't want to hear it.
PlaylistItem *playingItem = m_playlist->playingItem();
if(playingItem && playingItem->playlist() == m_playlist && currentItem != playingItem)
m_playlist->clearItem(playingItem);
// If a different playlist owns this item, add it to the upcoming playlist
Playlist *p = currentItem->playlist();
if(p != m_playlist) {
PlaylistItem *i = m_playlist->createItem(currentItem, (PlaylistItem *) 0);
m_playlist->playlistIndex().insert(i, p);
m_playlist->dataChanged();
m_playlist->slotWeightDirty();
}
else {
// if(p == m_playlist) {
// Bump this item up to the top
m_playlist->takeItem(currentItem);
m_playlist->insertItem(currentItem);
}
TrackSequenceIterator::setCurrent(m_playlist->firstChild());
}
void UpcomingPlaylist::UpcomingSequenceIterator::reset()
{
setCurrent(0);
}
void UpcomingPlaylist::UpcomingSequenceIterator::prepareToPlay(Playlist *)
{
if(!m_playlist->items().isEmpty())
setCurrent(m_playlist->firstChild());
}
QDataStream &operator<<(QDataStream &s, const UpcomingPlaylist &p)
{
PlaylistItemList l = const_cast<UpcomingPlaylist *>(&p)->items();
s << Q_INT32(l.count());
for(PlaylistItemList::ConstIterator it = l.begin(); it != l.end(); ++it)
s << (*it)->file().absFilePath();
return s;
}
QDataStream &operator>>(QDataStream &s, UpcomingPlaylist &p)
{
QString fileName;
PlaylistItem *newItem = 0;
Q_INT32 count;
s >> count;
for(Q_INT32 i = 0; i < count; ++i) {
s >> fileName;
newItem = p.createItem(FileHandle(fileName), newItem, false);
}
return s;
}
// vim: set et ts=4 sw=4: