1
0
mirror of https://github.com/strawberrymusicplayer/strawberry synced 2025-01-28 08:09:40 +01:00

Queue tidal requests

This commit is contained in:
Jonas Kvinge 2019-05-30 18:06:48 +02:00
parent 2b7d48ce77
commit f26f932fd7
10 changed files with 788 additions and 293 deletions

View File

@ -48,7 +48,9 @@ class InternetCollectionViewContainer : public QWidget {
QWidget *internetcollection_page() const { return ui_->internetcollection_page; }
InternetCollectionView *view() const { return ui_->view; }
CollectionFilterWidget *filter() const { return ui_->filter; }
QPushButton *refresh() const { return ui_->refresh; }
QPushButton *button_refresh() const { return ui_->refresh; }
QPushButton *button_close() const { return ui_->close; }
QPushButton *button_abort() const { return ui_->abort; }
QLabel *status() const { return ui_->status; }
QProgressBar *progressbar() const { return ui_->progressbar; }
void ReloadSettings() { view()->ReloadSettings(); }

View File

@ -69,6 +69,37 @@
</property>
</widget>
</item>
<item>
<layout class="QHBoxLayout" name="layout_buttons">
<item>
<spacer name="spacer_buttons">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
<item>
<widget class="QPushButton" name="close">
<property name="text">
<string>Close</string>
</property>
</widget>
</item>
<item>
<widget class="QPushButton" name="abort">
<property name="text">
<string>Abort</string>
</property>
</widget>
</item>
</layout>
</item>
<item>
<spacer name="verticalSpacer">
<property name="orientation">

View File

@ -67,6 +67,9 @@ class InternetService : public QObject {
virtual void GetArtists() = 0;
virtual void GetAlbums() = 0;
virtual void GetSongs() = 0;
virtual void ResetArtistsRequest() = 0;
virtual void ResetAlbumsRequest() = 0;
virtual void ResetSongsRequest() = 0;
signals:
void Login();

View File

@ -55,9 +55,11 @@ InternetTabsView::InternetTabsView(Application *app, InternetService *service, I
ui_->artists_collection->filter()->SetCollectionModel(service_->artists_collection_model());
connect(ui_->artists_collection->view(), SIGNAL(GetSongs()), SLOT(GetArtists()));
connect(ui_->artists_collection->refresh(), SIGNAL(clicked()), SLOT(GetArtists()));
connect(ui_->artists_collection->button_refresh(), SIGNAL(clicked()), SLOT(GetArtists()));
connect(ui_->artists_collection->button_close(), SIGNAL(clicked()), SLOT(AbortGetArtists()));
connect(ui_->artists_collection->button_abort(), SIGNAL(clicked()), SLOT(AbortGetArtists()));
connect(service_, SIGNAL(ArtistsResults(SongList)), SLOT(ArtistsFinished(SongList)));
connect(service_, SIGNAL(ArtistsError(QString)), ui_->artists_collection->status(), SLOT(setText(QString)));
connect(service_, SIGNAL(ArtistsError(QString)), SLOT(ArtistsError(QString)));
connect(service_, SIGNAL(ArtistsUpdateStatus(QString)), ui_->artists_collection->status(), SLOT(setText(QString)));
connect(service_, SIGNAL(ArtistsProgressSetMaximum(int)), ui_->artists_collection->progressbar(), SLOT(setMaximum(int)));
connect(service_, SIGNAL(ArtistsUpdateProgress(int)), ui_->artists_collection->progressbar(), SLOT(setValue(int)));
@ -81,9 +83,11 @@ InternetTabsView::InternetTabsView(Application *app, InternetService *service, I
ui_->albums_collection->filter()->SetCollectionModel(service_->albums_collection_model());
connect(ui_->albums_collection->view(), SIGNAL(GetSongs()), SLOT(GetAlbums()));
connect(ui_->albums_collection->refresh(), SIGNAL(clicked()), SLOT(GetAlbums()));
connect(ui_->albums_collection->button_refresh(), SIGNAL(clicked()), SLOT(GetAlbums()));
connect(ui_->albums_collection->button_close(), SIGNAL(clicked()), SLOT(AbortGetAlbums()));
connect(ui_->albums_collection->button_abort(), SIGNAL(clicked()), SLOT(AbortGetAlbums()));
connect(service_, SIGNAL(AlbumsResults(SongList)), SLOT(AlbumsFinished(SongList)));
connect(service_, SIGNAL(AlbumsError(QString)), ui_->albums_collection->status(), SLOT(setText(QString)));
connect(service_, SIGNAL(AlbumsError(QString)), SLOT(AlbumsError(QString)));
connect(service_, SIGNAL(AlbumsUpdateStatus(QString)), ui_->albums_collection->status(), SLOT(setText(QString)));
connect(service_, SIGNAL(AlbumsProgressSetMaximum(int)), ui_->albums_collection->progressbar(), SLOT(setMaximum(int)));
connect(service_, SIGNAL(AlbumsUpdateProgress(int)), ui_->albums_collection->progressbar(), SLOT(setValue(int)));
@ -107,9 +111,11 @@ InternetTabsView::InternetTabsView(Application *app, InternetService *service, I
ui_->songs_collection->filter()->SetCollectionModel(service_->songs_collection_model());
connect(ui_->songs_collection->view(), SIGNAL(GetSongs()), SLOT(GetSongs()));
connect(ui_->songs_collection->refresh(), SIGNAL(clicked()), SLOT(GetSongs()));
connect(ui_->songs_collection->button_refresh(), SIGNAL(clicked()), SLOT(GetSongs()));
connect(ui_->songs_collection->button_close(), SIGNAL(clicked()), SLOT(AbortGetSongs()));
connect(ui_->songs_collection->button_abort(), SIGNAL(clicked()), SLOT(AbortGetSongs()));
connect(service_, SIGNAL(SongsResults(SongList)), SLOT(SongsFinished(SongList)));
connect(service_, SIGNAL(SongsError(QString)), ui_->songs_collection->status(), SLOT(setText(QString)));
connect(service_, SIGNAL(SongsError(QString)), SLOT(SongsError(QString)));
connect(service_, SIGNAL(SongsUpdateStatus(QString)), ui_->songs_collection->status(), SLOT(setText(QString)));
connect(service_, SIGNAL(SongsProgressSetMaximum(int)), ui_->songs_collection->progressbar(), SLOT(setMaximum(int)));
connect(service_, SIGNAL(SongsUpdateProgress(int)), ui_->songs_collection->progressbar(), SLOT(setValue(int)));
@ -129,7 +135,6 @@ InternetTabsView::InternetTabsView(Application *app, InternetService *service, I
s.beginGroup(settings_group_);
QString tab = s.value("tab", "artists").toString().toLower();
s.endGroup();
qLog(Debug) << tab;
if (tab == "artists") {
ui_->tabs->setCurrentWidget(ui_->artists);
@ -165,12 +170,34 @@ void InternetTabsView::contextMenuEvent(QContextMenuEvent *e) {
void InternetTabsView::GetArtists() {
ui_->artists_collection->stacked()->setCurrentWidget(ui_->artists_collection->help_page());
ui_->artists_collection->status()->clear();
ui_->artists_collection->progressbar()->show();
ui_->artists_collection->button_abort()->show();
ui_->artists_collection->button_close()->hide();
ui_->artists_collection->stacked()->setCurrentWidget(ui_->artists_collection->help_page());
service_->GetArtists();
}
void InternetTabsView::AbortGetArtists() {
service_->ResetArtistsRequest();
ui_->artists_collection->progressbar()->setValue(0);
ui_->artists_collection->status()->clear();
ui_->artists_collection->stacked()->setCurrentWidget(ui_->artists_collection->internetcollection_page());
}
void InternetTabsView::ArtistsError(QString error) {
ui_->artists_collection->status()->setText(error);
ui_->artists_collection->progressbar()->setValue(0);
ui_->artists_collection->progressbar()->hide();
ui_->artists_collection->button_abort()->hide();
ui_->artists_collection->button_close()->show();
}
void InternetTabsView::ArtistsFinished(SongList songs) {
service_->artists_collection_backend()->DeleteAll();
@ -182,11 +209,34 @@ void InternetTabsView::ArtistsFinished(SongList songs) {
void InternetTabsView::GetAlbums() {
ui_->albums_collection->status()->clear();
ui_->albums_collection->progressbar()->show();
ui_->albums_collection->button_abort()->show();
ui_->albums_collection->button_close()->hide();
ui_->albums_collection->stacked()->setCurrentWidget(ui_->albums_collection->help_page());
service_->GetAlbums();
}
void InternetTabsView::AbortGetAlbums() {
service_->ResetAlbumsRequest();
ui_->albums_collection->progressbar()->setValue(0);
ui_->albums_collection->status()->clear();
ui_->albums_collection->stacked()->setCurrentWidget(ui_->albums_collection->internetcollection_page());
}
void InternetTabsView::AlbumsError(QString error) {
ui_->albums_collection->status()->setText(error);
ui_->albums_collection->progressbar()->setValue(0);
ui_->albums_collection->progressbar()->hide();
ui_->albums_collection->button_abort()->hide();
ui_->albums_collection->button_close()->show();
}
void InternetTabsView::AlbumsFinished(SongList songs) {
service_->albums_collection_backend()->DeleteAll();
@ -198,11 +248,34 @@ void InternetTabsView::AlbumsFinished(SongList songs) {
void InternetTabsView::GetSongs() {
ui_->songs_collection->status()->clear();
ui_->songs_collection->progressbar()->show();
ui_->songs_collection->button_abort()->show();
ui_->songs_collection->button_close()->hide();
ui_->songs_collection->stacked()->setCurrentWidget(ui_->songs_collection->help_page());
service_->GetSongs();
}
void InternetTabsView::AbortGetSongs() {
service_->ResetSongsRequest();
ui_->songs_collection->progressbar()->setValue(0);
ui_->songs_collection->status()->clear();
ui_->songs_collection->stacked()->setCurrentWidget(ui_->songs_collection->internetcollection_page());
}
void InternetTabsView::SongsError(QString error) {
ui_->songs_collection->status()->setText(error);
ui_->songs_collection->progressbar()->setValue(0);
ui_->songs_collection->progressbar()->hide();
ui_->songs_collection->button_abort()->hide();
ui_->songs_collection->button_close()->show();
}
void InternetTabsView::SongsFinished(SongList songs) {
service_->songs_collection_backend()->DeleteAll();

View File

@ -59,6 +59,12 @@ class InternetTabsView : public QWidget {
void GetArtists();
void GetAlbums();
void GetSongs();
void AbortGetArtists();
void AbortGetAlbums();
void AbortGetSongs();
void ArtistsError(QString error);
void AlbumsError(QString error);
void SongsError(QString error);
void ArtistsFinished(SongList songs);
void AlbumsFinished(SongList songs);
void SongsFinished(SongList songs);

View File

@ -11,25 +11,10 @@
</rect>
</property>
<layout class="QVBoxLayout" name="verticalLayout">
<property name="spacing">
<number>0</number>
</property>
<property name="leftMargin">
<number>0</number>
</property>
<property name="topMargin">
<number>0</number>
</property>
<property name="rightMargin">
<number>0</number>
</property>
<property name="bottomMargin">
<number>0</number>
</property>
<item>
<widget class="QTabWidget" name="tabs">
<property name="currentIndex">
<number>3</number>
<number>0</number>
</property>
<widget class="QWidget" name="artists">
<attribute name="title">
@ -102,6 +87,18 @@
<string>Search</string>
</attribute>
<layout class="QVBoxLayout" name="verticalLayout_2">
<property name="leftMargin">
<number>0</number>
</property>
<property name="topMargin">
<number>0</number>
</property>
<property name="rightMargin">
<number>0</number>
</property>
<property name="bottomMargin">
<number>0</number>
</property>
<item>
<widget class="InternetSearchView" name="search_view" native="true"/>
</item>

File diff suppressed because it is too large Load Diff

View File

@ -29,6 +29,7 @@
#include <QHash>
#include <QMap>
#include <QMultiMap>
#include <QQueue>
#include <QString>
#include <QUrl>
#include <QNetworkReply>
@ -71,41 +72,100 @@ class TidalRequest : public TidalBaseRequest {
void UpdateProgress(int max);
void StreamURLFinished(const QUrl original_url, const QUrl url, const Song::FileType, QString error = QString());
public slots:
void GetArtists(const int offset = 0);
void GetAlbums(const int offset = 0);
void GetSongs(const int offset = 0);
private slots:
void LoginComplete(bool success, QString error = QString());
void ArtistsReceived(QNetworkReply *reply, const int limit_requested = 0, const int offset_requested = 0);
void AlbumsReceived(QNetworkReply *reply, const int artist_id = 0, const int limit_requested = 0, const int offset_requested = 0);
void SongsReceived(QNetworkReply *reply, const int album_id);
void ArtistsReplyReceived(QNetworkReply *reply, const int limit_requested, const int offset_requested);
void AlbumsReplyReceived(QNetworkReply *reply, const int limit_requested, const int offset_requested);
void AlbumsReceived(QNetworkReply *reply, const int artist_id, const int limit_requested, const int offset_requested);
void SongsReplyReceived(QNetworkReply *reply, const int limit_requested, const int offset_requested);
void SongsReceived(QNetworkReply *reply, const int artist_id, const int album_id, const int limit_requested, const int offset_requested, const QString album_artist = QString());
void ArtistAlbumsReplyReceived(QNetworkReply *reply, const int artist_id, const int offset_requested);
void AlbumSongsReplyReceived(QNetworkReply *reply, const int artist_id, const int album_id, const int offset_requested, const QString album_artist);
void AlbumCoverReceived(QNetworkReply *reply, const int album_id, const QUrl url);
private:
typedef QPair<QString, QString> Param;
typedef QList<Param> ParamList;
struct Request {
//Request(const int artist_id = 0, const int limit = 0, const int offset = 0) :
//artist_id_(artist_id), limit_(limit), offset_(offset) {}
int artist_id = 0;
int album_id = 0;
int song_id = 0;
int offset = 0;
int limit = 0;
QString album_artist;
};
struct AlbumCoverRequest {
int artist_id = 0;
int album_id = 0;
QUrl url;
};
#if 0
struct AlbumSongsRequest {
AlbumSongsRequest(const int artist_id = 0, const int album_id = 0, const QString &album_artist = QString()) :
artist_id_(artist_id), album_id_(album_id), album_artist_(album_artist) {}
int artist_id_;
int album_id_;
QString album_artist_;
};
#endif
const bool IsQuery() { return (type_ == QueryType_Artists || type_ == QueryType_Albums || type_ == QueryType_Songs); }
const bool IsSearch() { return (type_ == QueryType_SearchArtists || type_ == QueryType_SearchAlbums || type_ == QueryType_SearchSongs); }
void SendSearch();
void ArtistsSearch(const int offset = 0);
void AlbumsSearch(const int offset = 0);
void SongsSearch(const int offset = 0);
void GetArtists();
void GetAlbums();
void GetSongs();
void ArtistsSearch();
void AlbumsSearch();
void SongsSearch();
void AddArtistsRequest(const int offset = 0, const int limit = 0);
void AddArtistsSearchRequest(const int offset = 0);
void FlushArtistsRequests();
void AddAlbumsRequest(const int offset = 0, const int limit = 0);
void AddAlbumsSearchRequest(const int offset = 0);
void FlushAlbumsRequests();
void AddSongsRequest(const int offset = 0, const int limit = 0);
void AddSongsSearchRequest(const int offset = 0);
void FlushSongsRequests();
void ArtistsFinishCheck(const int limit = 0, const int offset = 0, const int artists_received = 0);
void AlbumsFinishCheck(const int artist_id, const int limit = 0, const int offset = 0, const int albums_total = 0, const int albums_received = 0);
void GetArtistAlbums(const int artist_id, const int offset = 0);
void GetAlbumSongs(const int album_id);
int ParseSong(Song &song, const int album_id_requested, const QJsonValue &value, QString album_artist = QString());
void SongsFinishCheck(const int artist_id, const int album_id, const int limit, const int offset, const int songs_total, const int songs_received, const QString &album_artist);
void AddArtistAlbumsRequest(const int artist_id, const int offset = 0);
void FlushArtistAlbumsRequests();
void AddAlbumSongsRequest(const int artist_id, const int album_id, const QString &album_artist, const int offset = 0);
void FlushAlbumSongsRequests();
int ParseSong(Song &song, const QJsonObject &json_obj, const int artist_id_requested = 0, const int album_id_requested = 0, const QString &album_artist = QString());
void GetAlbumCovers();
void GetAlbumCover(Song &song);
void AddAlbumCoverRequest(Song &song);
void FlushAlbumCoverRequests();
void AlbumCoverFinishCheck();
void FinishCheck();
QString LoginError(QString error, QVariant debug = QVariant());
void Warn(QString error, QVariant debug = QVariant());
QString Error(QString error, QVariant debug = QVariant());
static const char *kResourcesUrl;
static const int kMaxConcurrentArtistsRequests;
static const int kMaxConcurrentAlbumsRequests;
static const int kMaxConcurrentSongsRequests;
static const int kMaxConcurrentArtistAlbumsRequests;
static const int kMaxConcurrentAlbumSongsRequests;
static const int kMaxConcurrentAlbumCoverRequests;
TidalService *service_;
TidalUrlHandler *url_handler_;
@ -115,20 +175,38 @@ class TidalRequest : public TidalBaseRequest {
int search_id_;
QString search_text_;
QList<int> artist_albums_queue_;
QList<int> artist_albums_requests_;
QHash<int, QString> album_songs_requests_;
QMultiMap<int, Song*> album_covers_requests_;
QQueue<Request> artists_requests_queue_;
QQueue<Request> albums_requests_queue_;
QQueue<Request> songs_requests_queue_;
QQueue<Request> artist_albums_requests_queue_;
QQueue<Request> album_songs_requests_queue_;
QQueue<AlbumCoverRequest> album_cover_requests_queue_;
QList<int> artist_albums_requests_pending_;
QHash<int, Request> album_songs_requests_pending_;
QMultiMap<int, Song*> album_covers_requests_sent_;
int artists_requests_active_;
int artists_total_;
int artists_chunk_requested_;
int artists_chunk_received_;
int artists_received_;
int artist_albums_chunk_requested_;
int artist_albums_chunk_received_;
int albums_requests_active_;
int songs_requests_active_;
int artist_albums_requests_active_;
int artist_albums_requested_;
int artist_albums_received_;
int album_songs_requests_active_;
int album_songs_requested_;
int album_songs_received_;
int album_covers_requests_active_;
int album_covers_requested_;
int album_covers_received_;
SongList songs_;
QString errors_;
bool need_login_;

View File

@ -365,65 +365,125 @@ void TidalService::TryLogin() {
}
void TidalService::ResetArtistsRequest() {
if (artists_request_.get()) {
disconnect(artists_request_.get(), 0, nullptr, 0);
disconnect(this, 0, artists_request_.get(), 0);
artists_request_.reset();
}
}
void TidalService::GetArtists() {
ResetArtistsRequest();
artists_request_.reset(new TidalRequest(this, url_handler_, network_, TidalBaseRequest::QueryType_Artists, this));
connect(artists_request_.get(), SIGNAL(ErrorSignal(QString)), SIGNAL(ArtistsError(QString)));
connect(artists_request_.get(), SIGNAL(ErrorSignal(QString)), SLOT(ArtistsErrorReceived(QString)));
connect(artists_request_.get(), SIGNAL(Results(SongList)), SLOT(ArtistsResultsReceived(SongList)));
connect(artists_request_.get(), SIGNAL(UpdateStatus(QString)), SIGNAL(ArtistsUpdateStatus(QString)));
connect(artists_request_.get(), SIGNAL(ProgressSetMaximum(int)), SIGNAL(ArtistsProgressSetMaximum(int)));
connect(artists_request_.get(), SIGNAL(UpdateProgress(int)), SIGNAL(ArtistsUpdateProgress(int)));
connect(artists_request_.get(), SIGNAL(Results(SongList)), SIGNAL(ArtistsResults(SongList)));
connect(this, SIGNAL(LoginComplete(bool, QString)), artists_request_.get(), SLOT(LoginComplete(bool, QString)));
artists_request_->Process();
}
void TidalService::UpdateArtists(SongList songs) {
void TidalService::ArtistsResultsReceived(SongList songs) {
artists_collection_backend_->DeleteAll();
artists_collection_backend_->AddOrUpdateSongs(songs);
artists_collection_model_->Reset();
emit ArtistsResults(songs);
ResetArtistsRequest();
}
void TidalService::ArtistsErrorReceived(QString error) {
emit ArtistsError(error);
ResetArtistsRequest();
}
void TidalService::ResetAlbumsRequest() {
if (albums_request_.get()) {
disconnect(albums_request_.get(), 0, nullptr, 0);
disconnect(this, 0, albums_request_.get(), 0);
albums_request_.reset();
}
}
void TidalService::GetAlbums() {
ResetAlbumsRequest();
albums_request_.reset(new TidalRequest(this, url_handler_, network_, TidalBaseRequest::QueryType_Albums, this));
connect(albums_request_.get(), SIGNAL(ErrorSignal(QString)), SIGNAL(AlbumsError(QString)));
connect(albums_request_.get(), SIGNAL(ErrorSignal(QString)), SLOT(AlbumsErrorReceived(QString)));
connect(albums_request_.get(), SIGNAL(Results(SongList)), SLOT(AlbumsResultsReceived(SongList)));
connect(albums_request_.get(), SIGNAL(UpdateStatus(QString)), SIGNAL(AlbumsUpdateStatus(QString)));
connect(albums_request_.get(), SIGNAL(ProgressSetMaximum(int)), SIGNAL(AlbumsProgressSetMaximum(int)));
connect(albums_request_.get(), SIGNAL(UpdateProgress(int)), SIGNAL(AlbumsUpdateProgress(int)));
connect(albums_request_.get(), SIGNAL(Results(SongList)), SIGNAL(AlbumsResults(SongList)));
connect(this, SIGNAL(LoginComplete(bool, QString)), albums_request_.get(), SLOT(LoginComplete(bool, QString)));
albums_request_->Process();
}
void TidalService::UpdateAlbums(SongList songs) {
void TidalService::AlbumsResultsReceived(SongList songs) {
albums_collection_backend_->DeleteAll();
albums_collection_backend_->AddOrUpdateSongs(songs);
albums_collection_model_->Reset();
emit AlbumsResults(songs);
ResetAlbumsRequest();
}
void TidalService::AlbumsErrorReceived(QString error) {
emit AlbumsError(error);
ResetAlbumsRequest();
}
void TidalService::ResetSongsRequest() {
if (songs_request_.get()) {
disconnect(songs_request_.get(), 0, nullptr, 0);
disconnect(this, 0, songs_request_.get(), 0);
songs_request_.reset();
}
}
void TidalService::GetSongs() {
ResetSongsRequest();
songs_request_.reset(new TidalRequest(this, url_handler_, network_, TidalBaseRequest::QueryType_Songs, this));
connect(songs_request_.get(), SIGNAL(ErrorSignal(QString)), SIGNAL(SongsError(QString)));
connect(songs_request_.get(), SIGNAL(ErrorSignal(QString)), SLOT(SongsErrorReceived(QString)));
connect(songs_request_.get(), SIGNAL(Results(SongList)), SLOT(SongsResultsReceived(SongList)));
connect(songs_request_.get(), SIGNAL(UpdateStatus(QString)), SIGNAL(SongsUpdateStatus(QString)));
connect(songs_request_.get(), SIGNAL(ProgressSetMaximum(int)), SIGNAL(SongsProgressSetMaximum(int)));
connect(songs_request_.get(), SIGNAL(UpdateProgress(int)), SIGNAL(SongsUpdateProgress(int)));
connect(songs_request_.get(), SIGNAL(Results(SongList)), SIGNAL(SongsResults(SongList)));
connect(this, SIGNAL(LoginComplete(bool, QString)), songs_request_.get(), SLOT(LoginComplete(bool, QString)));
songs_request_->Process();
}
void TidalService::SongsResultsReceived(SongList songs) {
emit SongsResults(songs);
ResetSongsRequest();
}
void TidalService::SongsErrorReceived(QString error) {
emit SongsError(error);
ResetSongsRequest();
}
int TidalService::Search(const QString &text, InternetSearch::SearchType type) {
pending_search_id_ = next_pending_search_id_;

View File

@ -118,14 +118,21 @@ class TidalService : public InternetService {
void GetArtists();
void GetAlbums();
void GetSongs();
void ResetArtistsRequest();
void ResetAlbumsRequest();
void ResetSongsRequest();
private slots:
void SendLogin();
void HandleAuthReply(QNetworkReply *reply);
void ResetLoginAttempts();
void StartSearch();
void UpdateArtists(SongList songs);
void UpdateAlbums(SongList songs);
void ArtistsResultsReceived(SongList songs);
void ArtistsErrorReceived(QString error);
void AlbumsResultsReceived(SongList songs);
void AlbumsErrorReceived(QString error);
void SongsResultsReceived(SongList songs);
void SongsErrorReceived(QString error);
private:
typedef QPair<QString, QString> Param;