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Clementine-audio-player-Mac.../src/playlist/playlist.cpp

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/* This file is part of Clementine.
Clementine 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 3 of the License, or
(at your option) any later version.
Clementine 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 Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#include "playlist.h"
#include "songmimedata.h"
#include "songplaylistitem.h"
#include "playlistbackend.h"
#include "playlistundocommands.h"
#include "library/library.h"
#include "library/librarybackend.h"
#include "library/libraryplaylistitem.h"
#include "radio/magnatuneservice.h"
#include "radio/magnatuneplaylistitem.h"
#include "radio/radiomimedata.h"
#include "radio/radiomodel.h"
#include "radio/radioplaylistitem.h"
#include "radio/savedradio.h"
#include <QtDebug>
#include <QMimeData>
#include <QBuffer>
#include <QSettings>
#include <QFileInfo>
#include <QDirIterator>
#include <QUndoStack>
#include <boost/bind.hpp>
#include <algorithm>
#include <lastfm/ScrobblePoint>
using boost::shared_ptr;
const char* Playlist::kRowsMimetype = "application/x-clementine-playlist-rows";
const char* Playlist::kSettingsGroup = "Playlist";
Playlist::Playlist(PlaylistBackend* backend,
QObject *parent, SettingsProvider* settings)
: QAbstractListModel(parent),
settings_(settings ? settings : new DefaultSettingsProvider),
backend_(backend),
current_is_paused_(false),
current_virtual_index_(-1),
is_shuffled_(false),
scrobble_point_(-1),
has_scrobbled_(false),
playlist_sequence_(NULL),
ignore_sorting_(false),
undo_stack_(new QUndoStack(this))
{
settings_->set_group(kSettingsGroup);
connect(this, SIGNAL(rowsInserted(const QModelIndex&, int, int)), SIGNAL(PlaylistChanged()));
connect(this, SIGNAL(rowsRemoved(const QModelIndex&, int, int)), SIGNAL(PlaylistChanged()));
Restore();
}
Playlist::~Playlist() {
items_.clear();
}
QVariant Playlist::headerData(int section, Qt::Orientation, int role) const {
if (role != Qt::DisplayRole && role != Qt::ToolTipRole)
return QVariant();
QString name = column_name((Playlist::Column)section);
if(name.size())
return name;
return QVariant();
}
bool Playlist::column_is_editable(Playlist::Column column) {
switch(column) {
case Column_Title:
case Column_Artist:
case Column_Album:
case Column_AlbumArtist:
case Column_Composer:
case Column_Track:
case Column_Disc:
case Column_Year:
case Column_Genre:
return true;
default:
break;
}
return false;
}
bool Playlist::set_column_value(Song& song, Playlist::Column column,
const QVariant& value) {
if (!song.IsEditable())
return false;
switch(column) {
case Column_Title:
song.set_title(value.toString());
break;
case Column_Artist:
song.set_artist(value.toString());
break;
case Column_Album:
song.set_album(value.toString());
break;
case Column_AlbumArtist:
song.set_albumartist(value.toString());
break;
case Column_Composer:
song.set_composer(value.toString());
break;
case Column_Track:
song.set_track(value.toInt());
break;
case Column_Disc:
song.set_disc(value.toInt());
break;
case Column_Year:
song.set_year(value.toInt());
break;
case Column_Genre:
song.set_genre(value.toString());
break;
default:
break;
}
return true;
}
QVariant Playlist::data(const QModelIndex& index, int role) const {
switch (role) {
case Role_IsCurrent:
return current_item_index_.isValid() && index.row() == current_item_index_.row();
case Role_IsPaused:
return current_is_paused_;
case Role_StopAfter:
return stop_after_.isValid() && stop_after_.row() == index.row();
case Qt::EditRole:
case Qt::ToolTipRole:
case Qt::DisplayRole: {
shared_ptr<PlaylistItem> item = items_[index.row()];
Song song = item->Metadata();
// Don't forget to change Playlist::CompareItems when adding new columns
switch (index.column()) {
case Column_Title:
return song.title().isEmpty() ? song.basefilename() : song.title();
case Column_Artist: return song.artist();
case Column_Album: return song.album();
case Column_Length: return song.length();
case Column_Track: return song.track();
case Column_Disc: return song.disc();
case Column_Year: return song.year();
case Column_Genre: return song.genre();
case Column_AlbumArtist: return song.albumartist();
case Column_Composer: return song.composer();
case Column_BPM: return song.bpm();
case Column_Bitrate: return song.bitrate();
case Column_Samplerate: return song.samplerate();
case Column_Filename: return song.filename();
case Column_BaseFilename: return song.basefilename();
case Column_Filesize: return song.filesize();
case Column_Filetype: return song.filetype();
case Column_DateModified: return song.mtime();
case Column_DateCreated: return song.ctime();
}
}
default:
return QVariant();
}
}
bool Playlist::setData(const QModelIndex &index, const QVariant &value, int) {
int row = index.row();
Song song = item_at(row)->Metadata();
if (index.data() == value)
return false;
if(!set_column_value(song, (Column)index.column(), value))
return false;
song.Save();
item_at(row)->Reload();
emit dataChanged(index, index);
emit EditingFinished(index);
return true;
}
int Playlist::current_index() const {
return current_item_index_.isValid() ? current_item_index_.row() : -1;
}
int Playlist::last_played_index() const {
return last_played_item_index_.isValid() ? last_played_item_index_.row() : -1;
}
void Playlist::ShuffleModeChanged(PlaylistSequence::ShuffleMode mode) {
is_shuffled_ = (mode != PlaylistSequence::Shuffle_Off);
ReshuffleIndices();
}
int Playlist::NextVirtualIndex(int i) const {
PlaylistSequence::RepeatMode repeat_mode = playlist_sequence_->repeat_mode();
PlaylistSequence::ShuffleMode shuffle_mode = playlist_sequence_->shuffle_mode();
bool album_only = repeat_mode == PlaylistSequence::Repeat_Album ||
shuffle_mode == PlaylistSequence::Shuffle_Album;
// This one's easy - if we have to repeat the current track then just return i
if (repeat_mode == PlaylistSequence::Repeat_Track)
return i;
// If we're not bothered about whether a song is on the same album then
// return the next virtual index, whatever it is.
if (!album_only)
return i+1;
// We need to advance i until we get something else on the same album
Song last_song = current_item_metadata();
for (int j=i+1 ; j<virtual_items_.count(); ++j) {
Song this_song = item_at(virtual_items_[j])->Metadata();
if (((last_song.is_compilation() && this_song.is_compilation()) ||
last_song.artist() == this_song.artist()) &&
last_song.album() == this_song.album()) {
return j; // Found one
}
}
// Couldn't find one - return past the end of the list
return virtual_items_.count();
}
int Playlist::next_index() const {
// Did we want to stop after this track?
if (stop_after_.isValid() && current_index() == stop_after_.row())
return -1;
int next_virtual_index = NextVirtualIndex(current_virtual_index_);
if (next_virtual_index >= virtual_items_.count()) {
// We've gone off the end of the playlist.
switch (playlist_sequence_->repeat_mode()) {
case PlaylistSequence::Repeat_Off:
return -1;
case PlaylistSequence::Repeat_Track:
next_virtual_index = current_virtual_index_;
break;
default:
next_virtual_index = NextVirtualIndex(-1);
break;
}
}
// Still off the end? Then just give up
if (next_virtual_index >= virtual_items_.count())
return -1;
return virtual_items_[next_virtual_index];
}
int Playlist::previous_index() const {
int i = current_index() - 1;
if (i < 0)
return -1;
return i;
}
void Playlist::set_current_index(int i) {
QModelIndex old_current = current_item_index_;
ClearStreamMetadata();
current_item_index_ = QPersistentModelIndex(index(i, 0, QModelIndex()));
if (current_item_index_.isValid()) {
last_played_item_index_ = current_item_index_;
current_item_ = items_[current_item_index_.row()];
Save();
} else {
current_item_.reset();
}
if (old_current.isValid())
emit dataChanged(old_current, old_current.sibling(old_current.row(), ColumnCount));
if (current_item_index_.isValid() && current_item_index_ != old_current) {
emit dataChanged(current_item_index_, current_item_index_.sibling(current_item_index_.row(), ColumnCount));
emit CurrentSongChanged(current_item_metadata());
}
// Update the virtual index
if (i == -1)
current_virtual_index_ = -1;
else if (is_shuffled_ && current_virtual_index_ == -1) {
// This is the first thing we're playing so we want to make sure the array
// is shuffled
ReshuffleIndices();
// Bring the one we've been asked to play to the start of the list
virtual_items_.takeAt(virtual_items_.indexOf(i));
virtual_items_.prepend(i);
current_virtual_index_ = 0;
} else if (is_shuffled_)
current_virtual_index_ = virtual_items_.indexOf(i);
else
current_virtual_index_ = i;
UpdateScrobblePoint();
}
Qt::ItemFlags Playlist::flags(const QModelIndex &index) const {
Qt::ItemFlags flags = Qt::ItemIsEnabled | Qt::ItemIsSelectable;
if(column_is_editable((Column)index.column()))
flags |= Qt::ItemIsEditable;
if (index.isValid())
return flags | Qt::ItemIsDragEnabled;
return Qt::ItemIsDropEnabled;
}
QStringList Playlist::mimeTypes() const {
return QStringList() << "text/uri-list" << kRowsMimetype;
}
Qt::DropActions Playlist::supportedDropActions() const {
return Qt::MoveAction | Qt::CopyAction | Qt::LinkAction;
}
bool Playlist::dropMimeData(const QMimeData* data, Qt::DropAction action, int row, int, const QModelIndex&) {
if (action == Qt::IgnoreAction)
return false;
if (const SongMimeData* song_data = qobject_cast<const SongMimeData*>(data)) {
// Dragged from a library
// We want to check if these songs are from the actual local file backend,
// if they are we treat them differently.
if (song_data->backend->songs_table() == Library::kSongsTable)
InsertLibraryItems(song_data->songs, row);
else if (song_data->backend->songs_table() == MagnatuneService::kSongsTable)
InsertMagnatuneItems(song_data->songs, row);
else
InsertSongs(song_data->songs, row);
} else if (const RadioMimeData* radio_data = qobject_cast<const RadioMimeData*>(data)) {
// Dragged from the Radio pane
InsertRadioStations(radio_data->items, row);
} else if (data->hasFormat(kRowsMimetype)) {
// Dragged from the playlist
// Rearranging it is tricky...
// Get the list of rows that were moved
QList<int> source_rows;
QDataStream stream(data->data(kRowsMimetype));
stream >> source_rows;
qStableSort(source_rows); // Make sure we take them in order
undo_stack_->push(new PlaylistUndoCommands::MoveItems(this, source_rows, row));
} else if (data->hasUrls()) {
// URL list dragged from the file list or some other app
InsertPaths(data->urls(), row);
}
return true;
}
void Playlist::MoveItemsWithoutUndo(const QList<int> &source_rows, int pos) {
layoutAboutToBeChanged();
PlaylistItemList moved_items;
// Take the items out of the list first, keeping track of whether the
// insertion point changes
int offset = 0;
foreach (int source_row, source_rows) {
moved_items << items_.takeAt(source_row-offset);
if (pos != -1 && pos >= source_row)
pos --;
offset++;
}
// Put the items back in
const int start = pos == -1 ? items_.count() : pos;
for (int i=start ; i<start+moved_items.count() ; ++i) {
items_.insert(i, moved_items[i - start]);
}
// Update persistent indexes
foreach (const QModelIndex& pidx, persistentIndexList()) {
const int dest_offset = source_rows.indexOf(pidx.row());
if (dest_offset != -1) {
// This index was moved
changePersistentIndex(pidx, index(start + dest_offset, pidx.column(), QModelIndex()));
} else {
int d = 0;
foreach (int source_row, source_rows) {
if (pidx.row() > source_row)
d --;
}
if (pidx.row() + d >= start)
d += source_rows.count();
changePersistentIndex(pidx, index(pidx.row() + d, pidx.column(), QModelIndex()));
}
}
current_virtual_index_ = virtual_items_.indexOf(current_index());
layoutChanged();
Save();
}
void Playlist::MoveItemsWithoutUndo(int start, const QList<int>& dest_rows) {
layoutAboutToBeChanged();
PlaylistItemList moved_items;
if (start == -1)
start = items_.count() - dest_rows.count();
// Take the items out of the list first, keeping track of whether the
// insertion point changes
for (int i=start ; i<start + dest_rows.count() ; ++i)
moved_items << items_.takeAt(start);
// Put the items back in
int offset = 0;
foreach (int dest_row, dest_rows) {
items_.insert(dest_row, moved_items[offset]);
offset ++;
}
// Update persistent indexes
foreach (const QModelIndex& pidx, persistentIndexList()) {
if (pidx.row() >= start && pidx.row() < start + dest_rows.count()) {
// This index was moved
const int i = pidx.row() - start;
changePersistentIndex(pidx, index(dest_rows[i], pidx.column(), QModelIndex()));
} else {
int d = 0;
if (pidx.row() >= start + dest_rows.count())
d -= dest_rows.count();
foreach (int dest_row, dest_rows) {
if (pidx.row() + d > dest_row)
d ++;
}
changePersistentIndex(pidx, index(pidx.row() + d, pidx.column(), QModelIndex()));
}
}
current_virtual_index_ = virtual_items_.indexOf(current_index());
layoutChanged();
Save();
}
QModelIndex Playlist::InsertPaths(QList<QUrl> urls, int pos) {
SongList songs;
for (int i=0 ; i<urls.count() ; ++i) {
QUrl url(urls[i]);
if (url.scheme() != "file")
continue;
QString filename(url.toLocalFile());
QFileInfo info(filename);
if (!info.exists())
continue;
if (info.isDir()) {
// Add all the songs in the directory
QDirIterator it(filename,
QDir::Files | QDir::NoDotAndDotDot | QDir::Readable,
QDirIterator::Subdirectories | QDirIterator::FollowSymlinks);
QList<QUrl> new_urls;
while (it.hasNext()) {
QString path(it.next());
new_urls << QUrl::fromLocalFile(path);
}
qSort(new_urls);
urls << new_urls;
} else {
Song song;
song.InitFromFile(filename, -1);
if (!song.is_valid())
continue;
songs << song;
}
}
return InsertSongs(songs, pos);
}
QModelIndex Playlist::InsertItems(const PlaylistItemList& items, int pos) {
if (items.isEmpty())
return QModelIndex();
const int start = pos == -1 ? items_.count() : pos;
undo_stack_->push(new PlaylistUndoCommands::InsertItems(this, items, pos));
return index(start, 0);
}
QModelIndex Playlist::InsertItemsWithoutUndo(const PlaylistItemList& items,
int pos) {
if (items.isEmpty())
return QModelIndex();
const int start = pos == -1 ? items_.count() : pos;
const int end = start + items.count() - 1;
beginInsertRows(QModelIndex(), start, end);
for (int i=start ; i<=end ; ++i) {
boost::shared_ptr<PlaylistItem> item = items[i - start];
items_.insert(i, item);
virtual_items_ << virtual_items_.count();
if (item == current_item_) {
// It's one we removed before that got re-added through an undo
current_item_index_ = index(i, 0);
last_played_item_index_ = current_item_index_;
}
}
endInsertRows();
Save();
ReshuffleIndices();
return index(start, 0);
}
QModelIndex Playlist::InsertLibraryItems(const SongList& songs, int pos) {
PlaylistItemList items;
foreach (const Song& song, songs) {
items << shared_ptr<PlaylistItem>(new LibraryPlaylistItem(song));
}
return InsertItems(items, pos);
}
QModelIndex Playlist::InsertMagnatuneItems(const SongList& songs, int pos) {
PlaylistItemList items;
foreach (const Song& song, songs) {
items << shared_ptr<PlaylistItem>(new MagnatunePlaylistItem(song));
}
return InsertItems(items, pos);
}
QModelIndex Playlist::InsertSongs(const SongList& songs, int pos) {
PlaylistItemList items;
foreach (const Song& song, songs) {
items << shared_ptr<PlaylistItem>(new SongPlaylistItem(song));
}
return InsertItems(items, pos);
}
QModelIndex Playlist::InsertRadioStations(const QList<RadioItem*>& items, int pos) {
PlaylistItemList playlist_items;
foreach (RadioItem* item, items) {
if (!item->playable)
continue;
playlist_items << shared_ptr<PlaylistItem>(
new RadioPlaylistItem(item->service, item->Url(), item->Title(), item->Artist()));
}
return InsertItems(playlist_items, pos);
}
QModelIndex Playlist::InsertStreamUrls(const QList<QUrl>& urls, int pos) {
PlaylistItemList playlist_items;
foreach (const QUrl& url, urls) {
playlist_items << shared_ptr<PlaylistItem>(new RadioPlaylistItem(
RadioModel::ServiceByName(SavedRadio::kServiceName), url.toString(), url.toString(), QString()));
}
return InsertItems(playlist_items, pos);
}
QMimeData* Playlist::mimeData(const QModelIndexList& indexes) const {
QMimeData* data = new QMimeData;
QList<QUrl> urls;
QList<int> rows;
foreach (const QModelIndex& index, indexes) {
if (index.column() != 0)
continue;
urls << items_[index.row()]->Url();
rows << index.row();
}
QBuffer buf;
buf.open(QIODevice::WriteOnly);
QDataStream stream(&buf);
stream << rows;
buf.close();
data->setUrls(urls);
data->setData(kRowsMimetype, buf.data());
return data;
}
bool Playlist::CompareItems(int column, Qt::SortOrder order,
shared_ptr<PlaylistItem> _a,
shared_ptr<PlaylistItem> _b) {
shared_ptr<PlaylistItem> a = order == Qt::AscendingOrder ? _a : _b;
shared_ptr<PlaylistItem> b = order == Qt::AscendingOrder ? _b : _a;
#define cmp(field) return a->Metadata().field() < b->Metadata().field()
switch (column) {
case Column_Title: cmp(title);
case Column_Artist: cmp(artist);
case Column_Album: cmp(album);
case Column_Length: cmp(length);
case Column_Track: cmp(track);
case Column_Disc: cmp(disc);
case Column_Year: cmp(year);
case Column_Genre: cmp(genre);
case Column_AlbumArtist: cmp(albumartist);
case Column_Composer: cmp(composer);
case Column_BPM: cmp(bpm);
case Column_Bitrate: cmp(bitrate);
case Column_Samplerate: cmp(samplerate);
case Column_Filename: cmp(filename);
case Column_BaseFilename: cmp(basefilename);
case Column_Filesize: cmp(filesize);
case Column_Filetype: cmp(filetype);
case Column_DateModified: cmp(mtime);
case Column_DateCreated: cmp(ctime);
}
#undef cmp
return false;
}
QString Playlist::column_name(Column column) {
switch (column) {
case Column_Title: return tr("Title");
case Column_Artist: return tr("Artist");
case Column_Album: return tr("Album");
case Column_Length: return tr("Length");
case Column_Track: return tr("Track");
case Column_Disc: return tr("Disc");
case Column_Year: return tr("Year");
case Column_Genre: return tr("Genre");
case Column_AlbumArtist: return tr("Album artist");
case Column_Composer: return tr("Composer");
case Column_BPM: return tr("BPM");
case Column_Bitrate: return tr("Bit rate");
case Column_Samplerate: return tr("Sample rate");
case Column_Filename: return tr("File name");
case Column_BaseFilename: return tr("File name (without path)");
case Column_Filesize: return tr("File size");
case Column_Filetype: return tr("File type");
case Column_DateModified: return tr("Date modified");
case Column_DateCreated: return tr("Date created");
default: return QString();
}
return "";
}
void Playlist::sort(int column, Qt::SortOrder order) {
if (ignore_sorting_)
return;
layoutAboutToBeChanged();
// This is a slow and nasty way to keep the persistent indices
QMap<int, shared_ptr<PlaylistItem> > old_persistent_mappings;
foreach (const QModelIndex& index, persistentIndexList()) {
old_persistent_mappings[index.row()] = items_[index.row()];
}
qStableSort(items_.begin(), items_.end(),
boost::bind(&Playlist::CompareItems, column, order, _1, _2));
QMapIterator<int, shared_ptr<PlaylistItem> > it(old_persistent_mappings);
while (it.hasNext()) {
it.next();
for (int col=0 ; col<ColumnCount ; ++col) {
int new_row = items_.indexOf(it.value());
changePersistentIndex(index(it.key(), col, QModelIndex()),
index(new_row, col, QModelIndex()));
}
}
layoutChanged();
// TODO
undo_stack_->clear();
Save();
}
void Playlist::Playing() {
SetCurrentIsPaused(false);
}
void Playlist::Paused() {
SetCurrentIsPaused(true);
}
void Playlist::Stopped() {
SetCurrentIsPaused(false);
}
void Playlist::SetCurrentIsPaused(bool paused) {
if (paused == current_is_paused_)
return;
current_is_paused_ = paused;
if (current_item_index_.isValid())
dataChanged(index(current_item_index_.row(), 0),
index(current_item_index_.row(), ColumnCount));
}
void Playlist::Save() const {
if (!backend_)
return;
backend_->SavePlaylistAsync(1, items_);
settings_->setValue("last_index", last_played_index());
}
void Playlist::Restore() {
if (!backend_)
return;
items_.clear();
virtual_items_.clear();
items_ = backend_->GetPlaylistItems(1);
for (int i=0 ; i<items_.count() ; ++i) {
virtual_items_ << i;
};
reset();
last_played_item_index_ = index(settings_->value("last_index", -1).toInt(), 0, QModelIndex());
}
bool Playlist::removeRows(int row, int count, const QModelIndex& parent) {
if (row < 0 || row >= items_.size() || row + count > items_.size()) {
return false;
}
undo_stack_->push(new PlaylistUndoCommands::RemoveItems(this, row, count));
return true;
}
PlaylistItemList Playlist::RemoveItemsWithoutUndo(int row, int count) {
if (row < 0 || row >= items_.size() || row + count > items_.size()) {
return PlaylistItemList();
}
beginRemoveRows(QModelIndex(), row, row+count-1);
// Remove items
PlaylistItemList ret;
for (int i=0 ; i<count ; ++i)
ret << items_.takeAt(row);
endRemoveRows();
QList<int>::iterator it = virtual_items_.begin();
int i = 0;
while (it != virtual_items_.end()) {
if (*it >= items_.count())
it = virtual_items_.erase(it);
else
++it;
++i;
}
// Reset current_virtual_index_
if (current_index() == -1)
current_virtual_index_ = -1;
else
current_virtual_index_ = virtual_items_.indexOf(current_index());
Save();
return ret;
}
void Playlist::StopAfter(int row) {
QModelIndex old_stop_after = stop_after_;
if ((stop_after_.isValid() && stop_after_.row() == row) || row == -1)
stop_after_ = QModelIndex();
else
stop_after_ = index(row, 0);
if (old_stop_after.isValid())
emit dataChanged(old_stop_after, old_stop_after.sibling(old_stop_after.row(), ColumnCount));
if (stop_after_.isValid())
emit dataChanged(stop_after_, stop_after_.sibling(stop_after_.row(), ColumnCount));
}
void Playlist::SetStreamMetadata(const QUrl& url, const Song& song) {
if (!current_item_)
return;
if (current_item_->Url() != url)
return;
// Don't update the metadata if it's only a minor change from before
if (current_item_->Metadata().artist() == song.artist() &&
current_item_->Metadata().title() == song.title())
return;
current_item_->SetTemporaryMetadata(song);
UpdateScrobblePoint();
emit dataChanged(index(current_item_index_.row(), 0), index(current_item_index_.row(), ColumnCount));
emit CurrentSongChanged(song);
}
void Playlist::ClearStreamMetadata() {
if (!current_item_)
return;
current_item_->ClearTemporaryMetadata();
UpdateScrobblePoint();
emit dataChanged(index(current_item_index_.row(), 0), index(current_item_index_.row(), ColumnCount));
}
bool Playlist::stop_after_current() const {
return stop_after_.isValid() && current_item_index_.isValid() &&
stop_after_.row() == current_item_index_.row();
}
PlaylistItem::Options Playlist::current_item_options() const {
if (!current_item_)
return PlaylistItem::Default;
return current_item_->options();
}
Song Playlist::current_item_metadata() const {
if (!current_item_)
return Song();
return current_item_->Metadata();
}
void Playlist::UpdateScrobblePoint() {
int length = qMin(current_item_metadata().length(), 240);
ScrobblePoint point(length / 2);
scrobble_point_ = point;
has_scrobbled_ = false;
}
void Playlist::Clear() {
undo_stack_->push(new PlaylistUndoCommands::RemoveItems(this, 0, items_.count()));
Save();
}
void Playlist::ReloadItems(const QList<int>& rows) {
foreach (int row, rows) {
item_at(row)->Reload();
emit dataChanged(index(row, 0), index(row, ColumnCount-1));
}
}
void Playlist::Shuffle() {
layoutAboutToBeChanged();
const int count = items_.count();
for (int i=0 ; i < count; ++i) {
int new_pos = i + (rand() % (count - i));
std::swap(items_[i], items_[new_pos]);
foreach (const QModelIndex& pidx, persistentIndexList()) {
if (pidx.row() == i)
changePersistentIndex(pidx, index(new_pos, pidx.column(), QModelIndex()));
else if (pidx.row() == new_pos)
changePersistentIndex(pidx, index(i, pidx.column(), QModelIndex()));
}
}
current_virtual_index_ = virtual_items_.indexOf(current_index());
layoutChanged();
// TODO
undo_stack_->clear();
Save();
}
void Playlist::ReshuffleIndices() {
if (!is_shuffled_) {
std::sort(virtual_items_.begin(), virtual_items_.end());
if (current_index() != -1)
current_virtual_index_ = virtual_items_.indexOf(current_index());
} else {
QList<int>::iterator begin = virtual_items_.begin();
if (current_virtual_index_ != -1)
std::advance(begin, current_virtual_index_ + 1);
std::random_shuffle(begin, virtual_items_.end());
}
}
void Playlist::set_sequence(PlaylistSequence* v) {
playlist_sequence_ = v;
connect(v, SIGNAL(ShuffleModeChanged(PlaylistSequence::ShuffleMode)),
SLOT(ShuffleModeChanged(PlaylistSequence::ShuffleMode)));
ShuffleModeChanged(v->shuffle_mode());
}
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