Use nullptr as parent parameter default everywhere

ext/clementine-spotifyblob/spotifyclient.h

@@ -39,7 +39,7 @@ class SpotifyClient : public AbstractMessageHandler<pb::spotify::Message> {
   Q_OBJECT
 
  public:
-  SpotifyClient(QObject* parent = 0);
+  SpotifyClient(QObject* parent = nullptr);
   ~SpotifyClient();
 
   static const int kSpotifyImageIDSize;

ext/libclementine-common/core/messagereply.h

@@ -30,7 +30,7 @@ class _MessageReplyBase : public QObject {
   Q_OBJECT
 
  public:
-  _MessageReplyBase(QObject* parent = 0);
+  _MessageReplyBase(QObject* parent = nullptr);
 
   virtual int id() const = 0;
   bool is_finished() const { return finished_; }
@@ -58,7 +58,7 @@ signals:
 template <typename MessageType>
 class MessageReply : public _MessageReplyBase {
  public:
-  MessageReply(const MessageType& request_message, QObject* parent = 0);
+  MessageReply(const MessageType& request_message, QObject* parent = nullptr);
 
   int id() const { return request_message_.id(); }
   const MessageType& request_message() const { return request_message_; }

ext/libclementine-common/core/workerpool.h

@@ -38,7 +38,7 @@ class _WorkerPoolBase : public QObject {
   Q_OBJECT
 
  public:
-  _WorkerPoolBase(QObject* parent = 0);
+  _WorkerPoolBase(QObject* parent = nullptr);
 
 signals:
   // Emitted when a worker failed to start.  This usually happens when the
@@ -60,7 +60,7 @@ signals:
 template <typename HandlerType>
 class WorkerPool : public _WorkerPoolBase {
  public:
-  WorkerPool(QObject* parent = 0);
+  WorkerPool(QObject* parent = nullptr);
   ~WorkerPool();
 
   typedef typename HandlerType::MessageType MessageType;

src/core/backgroundstreams.h

@@ -13,7 +13,7 @@ class QAction;
 class BackgroundStreams : public QObject {
   Q_OBJECT
  public:
-  explicit BackgroundStreams(EngineBase* engine, QObject* parent = 0);
+  explicit BackgroundStreams(EngineBase* engine, QObject* parent = nullptr);
   ~BackgroundStreams();
 
   void LoadStreams();

src/core/boundfuturewatcher.h

@@ -8,7 +8,7 @@
 template <typename T, typename D>
 class BoundFutureWatcher : public QFutureWatcher<T>, boost::noncopyable {
  public:
-  BoundFutureWatcher(const D& data, QObject* parent = 0)
+  BoundFutureWatcher(const D& data, QObject* parent = nullptr)
       : QFutureWatcher<T>(parent), data_(data) {}
 
   ~BoundFutureWatcher() {}

src/core/database.h

@@ -42,7 +42,7 @@ class Database : public QObject {
   Q_OBJECT
 
  public:
-  Database(Application* app, QObject* parent = 0,
+  Database(Application* app, QObject* parent = nullptr,
            const QString& database_name = QString());
 
   struct AttachedDatabase {
@@ -175,7 +175,7 @@ signals:
 
 class MemoryDatabase : public Database {
  public:
-  MemoryDatabase(Application* app, QObject* parent = 0)
+  MemoryDatabase(Application* app, QObject* parent = nullptr)
       : Database(app, parent, ":memory:") {}
   ~MemoryDatabase() {
     // Make sure Qt doesn't reuse the same database

src/core/filesystemwatcherinterface.h

@@ -23,13 +23,13 @@
 class FileSystemWatcherInterface : public QObject {
   Q_OBJECT
  public:
-  FileSystemWatcherInterface(QObject* parent = 0);
+  FileSystemWatcherInterface(QObject* parent = nullptr);
   virtual void Init() {}
   virtual void AddPath(const QString& path) = 0;
   virtual void RemovePath(const QString& path) = 0;
   virtual void Clear() = 0;
 
-  static FileSystemWatcherInterface* Create(QObject* parent = 0);
+  static FileSystemWatcherInterface* Create(QObject* parent = nullptr);
 
 signals:
   void PathChanged(const QString& path);

src/core/globalshortcutbackend.h

@@ -26,7 +26,7 @@ class GlobalShortcutBackend : public QObject {
   Q_OBJECT
 
  public:
-  GlobalShortcutBackend(GlobalShortcuts* parent = 0);
+  GlobalShortcutBackend(GlobalShortcuts* parent = nullptr);
   virtual ~GlobalShortcutBackend() {}
 
   bool is_active() const { return active_; }

src/core/globalshortcuts.h

@@ -33,7 +33,7 @@ class GlobalShortcuts : public QWidget {
   Q_OBJECT
 
  public:
-  GlobalShortcuts(QWidget* parent = 0);
+  GlobalShortcuts(QWidget* parent = nullptr);
 
   static const char* kSettingsGroup;
 

src/core/macfslistener.h

@@ -30,7 +30,7 @@ class MacFSListener : public FileSystemWatcherInterface {
   Q_OBJECT
 
  public:
-  explicit MacFSListener(QObject* parent = 0);
+  explicit MacFSListener(QObject* parent = nullptr);
   void Init();
   void AddPath(const QString& path);
   void RemovePath(const QString& path);

src/core/mergedproxymodel.h

@@ -30,7 +30,7 @@ class MergedProxyModel : public QAbstractProxyModel {
   Q_OBJECT
 
  public:
-  MergedProxyModel(QObject* parent = 0);
+  MergedProxyModel(QObject* parent = nullptr);
   ~MergedProxyModel();
 
   // Make another model appear as a child of the given item in the source model.

src/core/modelfuturewatcher.h

@@ -7,7 +7,7 @@
 template <typename T>
 class ModelFutureWatcher : public QFutureWatcher<T> {
  public:
-  ModelFutureWatcher(const QModelIndex& index, QObject* parent = 0)
+  ModelFutureWatcher(const QModelIndex& index, QObject* parent = nullptr)
       : QFutureWatcher<T>(parent), index_(index) {}
 
   ~ModelFutureWatcher() {}

src/core/mpris.h

@@ -31,7 +31,7 @@ class Mpris : public QObject {
   Q_OBJECT
 
  public:
-  Mpris(Application* app, QObject* parent = 0);
+  Mpris(Application* app, QObject* parent = nullptr);
 
 signals:
   void RaiseMainWindow();

src/core/mpris1.h

@@ -78,7 +78,7 @@ class Mpris1 : public QObject {
   Q_OBJECT
 
  public:
-  Mpris1(Application* app, QObject* parent = 0,
+  Mpris1(Application* app, QObject* parent = nullptr,
          const QString& dbus_service_name = QString());
   ~Mpris1();
 
@@ -102,7 +102,7 @@ class Mpris1Root : public QObject {
   Q_OBJECT
 
  public:
-  Mpris1Root(Application* app, QObject* parent = 0);
+  Mpris1Root(Application* app, QObject* parent = nullptr);
 
   QString Identity();
   void Quit();
@@ -116,7 +116,7 @@ class Mpris1Player : public QObject {
   Q_OBJECT
 
  public:
-  Mpris1Player(Application* app, QObject* parent = 0);
+  Mpris1Player(Application* app, QObject* parent = nullptr);
 
   void Pause();
   void Stop();
@@ -171,7 +171,7 @@ class Mpris1TrackList : public QObject {
   Q_OBJECT
 
  public:
-  Mpris1TrackList(Application* app, QObject* parent = 0);
+  Mpris1TrackList(Application* app, QObject* parent = nullptr);
 
   int AddTrack(const QString&, bool);
   void DelTrack(int index);

src/core/mpris2.h

@@ -102,7 +102,7 @@ class Mpris2 : public QObject {
   Q_PROPERTY(QStringList Orderings READ Orderings)
   Q_PROPERTY(MaybePlaylist ActivePlaylist READ ActivePlaylist)
 
-  Mpris2(Application* app, Mpris1* mpris1, QObject* parent = 0);
+  Mpris2(Application* app, Mpris1* mpris1, QObject* parent = nullptr);
 
   // Root Properties
   bool CanQuit() const;

src/core/network.h

@@ -48,7 +48,7 @@ class NetworkAccessManager : public QNetworkAccessManager {
   Q_OBJECT
 
  public:
-  NetworkAccessManager(QObject* parent = 0);
+  NetworkAccessManager(QObject* parent = nullptr);
 
  protected:
   QNetworkReply* createRequest(Operation op, const QNetworkRequest& request,
@@ -104,7 +104,7 @@ class NetworkTimeouts : public QObject {
   Q_OBJECT
 
  public:
-  NetworkTimeouts(int timeout_msec, QObject* parent = 0);
+  NetworkTimeouts(int timeout_msec, QObject* parent = nullptr);
 
   // TODO: Template this to avoid code duplication.
   void AddReply(QNetworkReply* reply);

src/core/organiseformat.h

@@ -48,7 +48,7 @@ class OrganiseFormat {
 
   class Validator : public QValidator {
    public:
-    explicit Validator(QObject* parent = 0);
+    explicit Validator(QObject* parent = nullptr);
     QValidator::State validate(QString& format, int& pos) const;
   };
 
@@ -61,7 +61,7 @@ class OrganiseFormat {
     static const QRgb kInvalidTagColorDark;
     static const QRgb kBlockColorDark;
 
-    explicit SyntaxHighlighter(QObject* parent = 0);
+    explicit SyntaxHighlighter(QObject* parent = nullptr);
     explicit SyntaxHighlighter(QTextEdit* parent);
     explicit SyntaxHighlighter(QTextDocument* parent);
     void highlightBlock(const QString& format);

src/core/player.h

@@ -37,7 +37,7 @@ class PlayerInterface : public QObject {
   Q_OBJECT
 
  public:
-  PlayerInterface(QObject* parent = 0) : QObject(parent) {}
+  PlayerInterface(QObject* parent = nullptr) : QObject(parent) {}
 
   virtual EngineBase* engine() const = 0;
   virtual Engine::State GetState() const = 0;
@@ -107,7 +107,7 @@ class Player : public PlayerInterface {
   Q_OBJECT
 
  public:
-  Player(Application* app, QObject* parent = 0);
+  Player(Application* app, QObject* parent = nullptr);
   ~Player();
 
   void Init();

src/core/qxtglobalshortcutbackend.h

@@ -24,7 +24,7 @@ class QxtGlobalShortcut;
 
 class QxtGlobalShortcutBackend : public GlobalShortcutBackend {
  public:
-  QxtGlobalShortcutBackend(GlobalShortcuts* parent = 0);
+  QxtGlobalShortcutBackend(GlobalShortcuts* parent = nullptr);
 
  protected:
   bool DoRegister();

src/core/simpletreemodel.h

@@ -25,7 +25,7 @@ class QModelIndex;
 template <typename T>
 class SimpleTreeModel : public QAbstractItemModel {
  public:
-  SimpleTreeModel(T* root = 0, QObject* parent = 0);
+  SimpleTreeModel(T* root = 0, QObject* parent = nullptr);
   virtual ~SimpleTreeModel() {}
 
   // QAbstractItemModel

src/core/songloader.h

@@ -41,7 +41,7 @@ class SongLoader : public QObject {
   Q_OBJECT
  public:
   SongLoader(LibraryBackendInterface* library, const Player* player,
-             QObject* parent = 0);
+             QObject* parent = nullptr);
   ~SongLoader();
 
   enum Result { Success, Error, WillLoadAsync, };

src/core/stylesheetloader.h

@@ -25,7 +25,7 @@
 
 class StyleSheetLoader : public QObject {
  public:
-  StyleSheetLoader(QObject* parent = 0);
+  StyleSheetLoader(QObject* parent = nullptr);
 
   // Sets the given stylesheet on the given widget.
   // If the stylesheet contains strings like %palette-[role], these get replaced

src/core/tagreaderclient.h

@@ -32,7 +32,7 @@ class TagReaderClient : public QObject {
   Q_OBJECT
 
  public:
-  TagReaderClient(QObject* parent = 0);
+  TagReaderClient(QObject* parent = nullptr);
 
   typedef AbstractMessageHandler<pb::tagreader::Message> HandlerType;
   typedef HandlerType::ReplyType ReplyType;

src/core/taskmanager.h

@@ -26,7 +26,7 @@ class TaskManager : public QObject {
   Q_OBJECT
 
  public:
-  TaskManager(QObject* parent = 0);
+  TaskManager(QObject* parent = nullptr);
 
   struct Task {
     int id;

src/core/urlhandler.h

@@ -26,7 +26,7 @@ class UrlHandler : public QObject {
   Q_OBJECT
 
  public:
-  UrlHandler(QObject* parent = 0);
+  UrlHandler(QObject* parent = nullptr);
 
   // The URL scheme that this handler handles.
   virtual QString scheme() const = 0;

src/covers/albumcoverexporter.h

@@ -32,7 +32,7 @@ class AlbumCoverExporter : public QObject {
   Q_OBJECT
 
  public:
-  AlbumCoverExporter(QObject* parent = 0);
+  AlbumCoverExporter(QObject* parent = nullptr);
   virtual ~AlbumCoverExporter() {}
 
   static const int kMaxConcurrentRequests;

src/covers/albumcoverfetcher.h

@@ -78,7 +78,7 @@ class AlbumCoverFetcher : public QObject {
   Q_OBJECT
 
  public:
-  AlbumCoverFetcher(CoverProviders* cover_providers, QObject* parent = 0,
+  AlbumCoverFetcher(CoverProviders* cover_providers, QObject* parent = nullptr,
                     QNetworkAccessManager* network = 0);
   virtual ~AlbumCoverFetcher() {}
 

src/covers/albumcoverloader.h

@@ -34,7 +34,7 @@ class AlbumCoverLoader : public QObject {
   Q_OBJECT
 
  public:
-  AlbumCoverLoader(QObject* parent = 0);
+  AlbumCoverLoader(QObject* parent = nullptr);
 
   void Stop() { stop_requested_ = true; }
 

src/covers/coversearchstatisticsdialog.h

@@ -30,7 +30,7 @@ class CoverSearchStatisticsDialog : public QDialog {
   Q_OBJECT
 
  public:
-  CoverSearchStatisticsDialog(QWidget* parent = 0);
+  CoverSearchStatisticsDialog(QWidget* parent = nullptr);
   ~CoverSearchStatisticsDialog();
 
   void Show(const CoverSearchStatistics& statistics);

src/covers/currentartloader.h

@@ -34,7 +34,7 @@ class CurrentArtLoader : public QObject {
   Q_OBJECT
 
  public:
-  CurrentArtLoader(Application* app, QObject* parent = 0);
+  CurrentArtLoader(Application* app, QObject* parent = nullptr);
   ~CurrentArtLoader();
 
   const AlbumCoverLoaderOptions& options() const { return options_; }

src/covers/kittenloader.h

@@ -11,7 +11,7 @@ class QNetworkReply;
 class KittenLoader : public AlbumCoverLoader {
   Q_OBJECT
  public:
-  KittenLoader(QObject* parent = 0);
+  KittenLoader(QObject* parent = nullptr);
 
   virtual quint64 LoadKitten(const AlbumCoverLoaderOptions& options);
 

src/covers/musicbrainzcoverprovider.h

@@ -28,7 +28,7 @@ class QNetworkReply;
 class MusicbrainzCoverProvider : public CoverProvider {
   Q_OBJECT
  public:
-  MusicbrainzCoverProvider(QObject* parent = 0);
+  MusicbrainzCoverProvider(QObject* parent = nullptr);
 
   // CoverProvider
   virtual bool StartSearch(const QString& artist, const QString& album, int id);

src/devices/devicedatabasebackend.h

@@ -29,7 +29,7 @@ class DeviceDatabaseBackend : public QObject {
   Q_OBJECT
 
  public:
-  Q_INVOKABLE DeviceDatabaseBackend(QObject* parent = 0);
+  Q_INVOKABLE DeviceDatabaseBackend(QObject* parent = nullptr);
 
   struct Device {
     Device() : id_(-1) {}

src/devices/devicemanager.h

@@ -39,7 +39,7 @@ class DeviceManager : public QAbstractListModel {
   Q_OBJECT
 
  public:
-  DeviceManager(Application* app, QObject* parent = 0);
+  DeviceManager(Application* app, QObject* parent = nullptr);
   ~DeviceManager();
 
   enum Role {

src/devices/deviceproperties.h

@@ -30,7 +30,7 @@ class DeviceProperties : public QDialog {
   Q_OBJECT
 
  public:
-  DeviceProperties(QWidget* parent = 0);
+  DeviceProperties(QWidget* parent = nullptr);
   ~DeviceProperties();
 
   void SetDeviceManager(DeviceManager* manager);

src/devices/deviceview.h

@@ -48,7 +48,7 @@ class DeviceView : public AutoExpandingTreeView {
   Q_OBJECT
 
  public:
-  DeviceView(QWidget* parent = 0);
+  DeviceView(QWidget* parent = nullptr);
   ~DeviceView();
 
   void SetApplication(Application* app);

src/devices/deviceviewcontainer.h

@@ -30,7 +30,7 @@ class DeviceViewContainer : public QWidget {
   Q_OBJECT
 
  public:
-  explicit DeviceViewContainer(QWidget* parent = 0);
+  explicit DeviceViewContainer(QWidget* parent = nullptr);
   ~DeviceViewContainer();
 
   DeviceView* view() const;

src/engines/gstelementdeleter.h

@@ -26,7 +26,7 @@ class GstElementDeleter : public QObject {
   Q_OBJECT
 
  public:
-  GstElementDeleter(QObject* parent = 0);
+  GstElementDeleter(QObject* parent = nullptr);
 
   // If you call this function with any gstreamer element, the element will get
   // deleted in the main thread.  This is useful if you need to delete an

src/globalsearch/globalsearch.h

@@ -32,7 +32,7 @@ class GlobalSearch : public QObject {
   Q_OBJECT
 
  public:
-  GlobalSearch(Application* app, QObject* parent = 0);
+  GlobalSearch(Application* app, QObject* parent = nullptr);
 
   static const int kDelayedSearchTimeoutMs;
   static const char* kSettingsGroup;

src/globalsearch/globalsearchmodel.h

@@ -31,7 +31,7 @@ class GlobalSearchModel : public QStandardItemModel {
   Q_OBJECT
 
  public:
-  GlobalSearchModel(GlobalSearch* engine, QObject* parent = 0);
+  GlobalSearchModel(GlobalSearch* engine, QObject* parent = nullptr);
 
   enum Role {
     Role_Result = LibraryModel::LastRole,

src/globalsearch/globalsearchsortmodel.h

@@ -22,7 +22,7 @@
 
 class GlobalSearchSortModel : public QSortFilterProxyModel {
  public:
-  GlobalSearchSortModel(QObject* parent = 0);
+  GlobalSearchSortModel(QObject* parent = nullptr);
 
  protected:
   bool lessThan(const QModelIndex& left, const QModelIndex& right) const;

src/globalsearch/globalsearchview.h

@@ -41,7 +41,7 @@ class GlobalSearchView : public QWidget {
   Q_OBJECT
 
  public:
-  GlobalSearchView(Application* app, QWidget* parent = 0);
+  GlobalSearchView(Application* app, QWidget* parent = nullptr);
   ~GlobalSearchView();
 
   static const int kSwapModelsTimeoutMsec;

src/globalsearch/groovesharksearchprovider.h

@@ -28,7 +28,7 @@ class GroovesharkSearchProvider : public SearchProvider {
   Q_OBJECT
 
  public:
-  explicit GroovesharkSearchProvider(Application* app, QObject* parent = 0);
+  explicit GroovesharkSearchProvider(Application* app, QObject* parent = nullptr);
   void Init(GroovesharkService* service);
 
   // SearchProvider

src/globalsearch/librarysearchprovider.h

@@ -27,7 +27,7 @@ class LibrarySearchProvider : public BlockingSearchProvider {
   LibrarySearchProvider(LibraryBackendInterface* backend, const QString& name,
                         const QString& id, const QIcon& icon,
                         bool enabled_by_default, Application* app,
-                        QObject* parent = 0);
+                        QObject* parent = nullptr);
 
   ResultList Search(int id, const QString& query);
   MimeData* LoadTracks(const ResultList& results);

src/globalsearch/searchprovider.h

@@ -32,7 +32,7 @@ class SearchProvider : public QObject {
   Q_OBJECT
 
  public:
-  SearchProvider(Application* app, QObject* parent = 0);
+  SearchProvider(Application* app, QObject* parent = nullptr);
 
   static const int kArtHeight;
 
@@ -199,7 +199,7 @@ class BlockingSearchProvider : public SearchProvider {
   Q_OBJECT
 
  public:
-  BlockingSearchProvider(Application* app, QObject* parent = 0);
+  BlockingSearchProvider(Application* app, QObject* parent = nullptr);
 
   void SearchAsync(int id, const QString& query);
   virtual ResultList Search(int id, const QString& query) = 0;

src/globalsearch/searchproviderstatuswidget.h

@@ -27,7 +27,7 @@ class Ui_SearchProviderStatusWidget;
 class SearchProviderStatusWidget : public QWidget {
  public:
   SearchProviderStatusWidget(const QIcon& warning_icon, GlobalSearch* engine,
-                             SearchProvider* provider, QWidget* parent = 0);
+                             SearchProvider* provider, QWidget* parent = nullptr);
   ~SearchProviderStatusWidget();
 
   bool eventFilter(QObject* object, QEvent* event);

src/globalsearch/soundcloudsearchprovider.h

@@ -28,7 +28,7 @@ class SoundCloudSearchProvider : public SearchProvider {
   Q_OBJECT
 
  public:
-  explicit SoundCloudSearchProvider(Application* app, QObject* parent = 0);
+  explicit SoundCloudSearchProvider(Application* app, QObject* parent = nullptr);
   void Init(SoundCloudService* service);
 
   // SearchProvider

src/globalsearch/spotifysearchprovider.h

@@ -28,7 +28,7 @@ class SpotifySearchProvider : public SearchProvider {
   Q_OBJECT
 
  public:
-  SpotifySearchProvider(Application* app, QObject* parent = 0);
+  SpotifySearchProvider(Application* app, QObject* parent = nullptr);
 
   void SearchAsync(int id, const QString& query);
   void LoadArtAsync(int id, const Result& result);

src/globalsearch/suggestionwidget.h

@@ -26,7 +26,7 @@ class SuggestionWidget : public QWidget {
   Q_OBJECT
 
  public:
-  SuggestionWidget(const QIcon& search_icon, QWidget* parent = 0);
+  SuggestionWidget(const QIcon& search_icon, QWidget* parent = nullptr);
   ~SuggestionWidget();
 
   bool eventFilter(QObject* object, QEvent* event);

src/internet/boxsettingspage.h

@@ -30,7 +30,7 @@ class BoxSettingsPage : public SettingsPage {
   Q_OBJECT
 
  public:
-  BoxSettingsPage(SettingsDialog* parent = 0);
+  BoxSettingsPage(SettingsDialog* parent = nullptr);
   ~BoxSettingsPage();
 
   void Load();

src/internet/boxurlhandler.h

@@ -8,7 +8,7 @@ class BoxService;
 class BoxUrlHandler : public UrlHandler {
   Q_OBJECT
  public:
-  BoxUrlHandler(BoxService* service, QObject* parent = 0);
+  BoxUrlHandler(BoxService* service, QObject* parent = nullptr);
 
   QString scheme() const { return "box"; }
   QIcon icon() const { return QIcon(":/providers/box.png"); }

src/internet/digitallyimportedclient.h

@@ -31,7 +31,7 @@ class DigitallyImportedClient : public QObject {
   Q_OBJECT
 
  public:
-  DigitallyImportedClient(const QString& service_name, QObject* parent = 0);
+  DigitallyImportedClient(const QString& service_name, QObject* parent = nullptr);
 
   static const char* kApiUsername;
   static const char* kApiPassword;

src/internet/dropboxauthenticator.h

@@ -11,7 +11,7 @@ class QNetworkReply;
 class DropboxAuthenticator : public QObject {
   Q_OBJECT
  public:
-  explicit DropboxAuthenticator(QObject* parent = 0);
+  explicit DropboxAuthenticator(QObject* parent = nullptr);
   void StartAuthorisation();
 
   const QString& access_token() const { return access_token_; }

src/internet/dropboxsettingspage.h

@@ -31,7 +31,7 @@ class DropboxSettingsPage : public SettingsPage {
   Q_OBJECT
 
  public:
-  DropboxSettingsPage(SettingsDialog* parent = 0);
+  DropboxSettingsPage(SettingsDialog* parent = nullptr);
   ~DropboxSettingsPage();
 
   void Load();

src/internet/dropboxurlhandler.h

@@ -8,7 +8,7 @@ class DropboxService;
 class DropboxUrlHandler : public UrlHandler {
   Q_OBJECT
  public:
-  DropboxUrlHandler(DropboxService* service, QObject* parent = 0);
+  DropboxUrlHandler(DropboxService* service, QObject* parent = nullptr);
 
   QString scheme() const { return "dropbox"; }
   QIcon icon() const { return QIcon(":providers/dropbox.png"); }

src/internet/geolocator.h

@@ -25,7 +25,7 @@
 class Geolocator : public QObject {
   Q_OBJECT
  public:
-  explicit Geolocator(QObject* parent = 0);
+  explicit Geolocator(QObject* parent = nullptr);
 
   void Geolocate();
 

src/internet/googledriveclient.h

@@ -134,7 +134,7 @@ class Client : public QObject {
   Q_OBJECT
 
  public:
-  Client(QObject* parent = 0);
+  Client(QObject* parent = nullptr);
 
   bool is_authenticated() const;
   const QString& access_token() const { return access_token_; }

src/internet/googledrivesettingspage.h

@@ -30,7 +30,7 @@ class GoogleDriveSettingsPage : public SettingsPage {
   Q_OBJECT
 
  public:
-  GoogleDriveSettingsPage(SettingsDialog* parent = 0);
+  GoogleDriveSettingsPage(SettingsDialog* parent = nullptr);
   ~GoogleDriveSettingsPage();
 
   void Load();

src/internet/googledriveurlhandler.h

@@ -8,7 +8,7 @@ class GoogleDriveService;
 class GoogleDriveUrlHandler : public UrlHandler {
   Q_OBJECT
  public:
-  GoogleDriveUrlHandler(GoogleDriveService* service, QObject* parent = 0);
+  GoogleDriveUrlHandler(GoogleDriveService* service, QObject* parent = nullptr);
 
   QString scheme() const { return "googledrive"; }
   QIcon icon() const { return QIcon(":providers/googledrive.png"); }

src/internet/icecastbackend.h

@@ -29,7 +29,7 @@ class IcecastBackend : public QObject {
   Q_OBJECT
 
  public:
-  IcecastBackend(QObject* parent = 0);
+  IcecastBackend(QObject* parent = nullptr);
   void Init(Database* db);
 
   static const char* kTableName;

src/internet/icecastfilterwidget.h

@@ -33,7 +33,7 @@ class IcecastFilterWidget : public QWidget {
   Q_OBJECT
 
  public:
-  IcecastFilterWidget(QWidget* parent = 0);
+  IcecastFilterWidget(QWidget* parent = nullptr);
   ~IcecastFilterWidget();
 
   static const char* kSettingsGroup;

src/internet/icecastmodel.h

@@ -30,7 +30,7 @@ class IcecastModel : public SimpleTreeModel<IcecastItem> {
   Q_OBJECT
 
  public:
-  IcecastModel(IcecastBackend* backend, QObject* parent = 0);
+  IcecastModel(IcecastBackend* backend, QObject* parent = nullptr);
   ~IcecastModel();
 
   // These values get saved in QSettings - don't change them

src/internet/internetmodel.h

@@ -42,7 +42,7 @@ class InternetModel : public QStandardItemModel {
   Q_OBJECT
 
  public:
-  InternetModel(Application* app, QObject* parent = 0);
+  InternetModel(Application* app, QObject* parent = nullptr);
 
   enum Role {
     // Services can use this role to distinguish between different types of

src/internet/internetview.h

@@ -24,7 +24,7 @@ class InternetView : public AutoExpandingTreeView {
   Q_OBJECT
 
  public:
-  InternetView(QWidget* parent = 0);
+  InternetView(QWidget* parent = nullptr);
 
   // QWidget
   void contextMenuEvent(QContextMenuEvent* e);

src/internet/internetviewcontainer.h

@@ -34,7 +34,7 @@ class InternetViewContainer : public QWidget {
   Q_OBJECT
 
  public:
-  InternetViewContainer(QWidget* parent = 0);
+  InternetViewContainer(QWidget* parent = nullptr);
   ~InternetViewContainer();
 
   static const int kAnimationDuration;

src/internet/lastfmstationdialog.h

@@ -26,7 +26,7 @@ class LastFMStationDialog : public QDialog {
   Q_OBJECT
 
  public:
-  LastFMStationDialog(QWidget* parent = 0);
+  LastFMStationDialog(QWidget* parent = nullptr);
   ~LastFMStationDialog();
 
   enum Type { Artist, Tag, Custom, };

src/internet/localredirectserver.h

@@ -11,7 +11,7 @@ class QTcpSocket;
 class LocalRedirectServer : public QObject {
   Q_OBJECT
  public:
-  LocalRedirectServer(QObject* parent = 0);
+  LocalRedirectServer(QObject* parent = nullptr);
 
   // Causes the server to listen for _one_ request.
   void Listen();

src/internet/magnatunedownloaddialog.h

@@ -35,7 +35,7 @@ class QXmlStreamReader;
 class MagnatuneDownloadDialog : public QDialog {
   Q_OBJECT
  public:
-  MagnatuneDownloadDialog(MagnatuneService* service, QWidget* parent = 0);
+  MagnatuneDownloadDialog(MagnatuneService* service, QWidget* parent = nullptr);
   ~MagnatuneDownloadDialog();
 
   void Show(const SongList& songs);

src/internet/oauthenticator.h

@@ -21,7 +21,7 @@ class OAuthenticator : public QObject {
   };
 
   OAuthenticator(const QString& client_id, const QString& client_secret,
-                 RedirectStyle redirect, QObject* parent = 0);
+                 RedirectStyle redirect, QObject* parent = nullptr);
   void StartAuthorisation(const QString& oauth_endpoint,
                           const QString& token_endpoint, const QString& scope);
   void RefreshAuthorisation(const QString& token_endpoint,

src/internet/skydriveurlhandler.h

@@ -8,7 +8,7 @@ class SkydriveService;
 class SkydriveUrlHandler : public UrlHandler {
   Q_OBJECT
  public:
-  SkydriveUrlHandler(SkydriveService* service, QObject* parent = 0);
+  SkydriveUrlHandler(SkydriveService* service, QObject* parent = nullptr);
 
   QString scheme() const { return "skydrive"; }
   QIcon icon() const { return QIcon(":providers/skydrive.png"); }

src/internet/spotifyblobdownloader.h

@@ -29,7 +29,7 @@ class SpotifyBlobDownloader : public QObject {
 
  public:
   SpotifyBlobDownloader(const QString& version, const QString& path,
-                        QObject* parent = 0);
+                        QObject* parent = nullptr);
   ~SpotifyBlobDownloader();
 
   static const char* kSignatureSuffix;

src/internet/spotifyserver.h

@@ -31,7 +31,7 @@ class SpotifyServer : public AbstractMessageHandler<pb::spotify::Message> {
   Q_OBJECT
 
  public:
-  SpotifyServer(QObject* parent = 0);
+  SpotifyServer(QObject* parent = nullptr);
 
   void Init();
   void Login(const QString& username, const QString& password,

src/internet/subsonicservice.h

@@ -140,7 +140,7 @@ class SubsonicLibraryScanner : public QObject {
   Q_OBJECT
 
  public:
-  SubsonicLibraryScanner(SubsonicService* service, QObject* parent = 0);
+  SubsonicLibraryScanner(SubsonicService* service, QObject* parent = nullptr);
   ~SubsonicLibraryScanner();
 
   void Scan();

src/internet/ubuntuoneauthenticator.h

@@ -9,7 +9,7 @@ class NetworkAccessManager;
 class UbuntuOneAuthenticator : public QObject {
   Q_OBJECT
  public:
-  explicit UbuntuOneAuthenticator(QObject* parent = 0);
+  explicit UbuntuOneAuthenticator(QObject* parent = nullptr);
   void StartAuthorisation(const QString& email, const QString& password);
 
   bool success() const { return success_; }

src/internet/ubuntuonesettingspage.h

@@ -10,7 +10,7 @@ class Ui_UbuntuOneSettingsPage;
 class UbuntuOneSettingsPage : public SettingsPage {
   Q_OBJECT
  public:
-  UbuntuOneSettingsPage(SettingsDialog* parent = 0);
+  UbuntuOneSettingsPage(SettingsDialog* parent = nullptr);
 
   void Load();
   void Save();

src/internet/ubuntuoneurlhandler.h

@@ -8,7 +8,7 @@ class UbuntuOneService;
 class UbuntuOneUrlHandler : public UrlHandler {
   Q_OBJECT
  public:
-  UbuntuOneUrlHandler(UbuntuOneService* service, QObject* parent = 0);
+  UbuntuOneUrlHandler(UbuntuOneService* service, QObject* parent = nullptr);
 
   QString scheme() const { return "ubuntuonefile"; }
   QIcon icon() const { return QIcon(":providers/ubuntuone.png"); }

src/library/librarybackend.h

@@ -36,7 +36,7 @@ class LibraryBackendInterface : public QObject {
   Q_OBJECT
 
  public:
-  LibraryBackendInterface(QObject* parent = 0) : QObject(parent) {}
+  LibraryBackendInterface(QObject* parent = nullptr) : QObject(parent) {}
   virtual ~LibraryBackendInterface() {}
 
   struct Album {
@@ -121,7 +121,7 @@ class LibraryBackend : public LibraryBackendInterface {
  public:
   static const char* kSettingsGroup;
 
-  Q_INVOKABLE LibraryBackend(QObject* parent = 0);
+  Q_INVOKABLE LibraryBackend(QObject* parent = nullptr);
   void Init(Database* db, const QString& songs_table, const QString& dirs_table,
             const QString& subdirs_table, const QString& fts_table);
 

src/library/librarydirectorymodel.h

@@ -32,7 +32,7 @@ class LibraryDirectoryModel : public QStandardItemModel {
   Q_OBJECT
 
  public:
-  LibraryDirectoryModel(LibraryBackend* backend, QObject* parent = 0);
+  LibraryDirectoryModel(LibraryBackend* backend, QObject* parent = nullptr);
   ~LibraryDirectoryModel();
 
   // To be called by GUIs

src/library/libraryfilterwidget.h

@@ -38,7 +38,7 @@ class LibraryFilterWidget : public QWidget {
   Q_OBJECT
 
  public:
-  LibraryFilterWidget(QWidget* parent = 0);
+  LibraryFilterWidget(QWidget* parent = nullptr);
   ~LibraryFilterWidget();
 
   static const int kFilterDelay = 500;  // msec

src/library/librarymodel.h

@@ -47,7 +47,7 @@ class LibraryModel : public SimpleTreeModel<LibraryItem> {
   Q_ENUMS(GroupBy);
 
  public:
-  LibraryModel(LibraryBackend* backend, Application* app, QObject* parent = 0);
+  LibraryModel(LibraryBackend* backend, Application* app, QObject* parent = nullptr);
   ~LibraryModel();
 
   static const char* kSmartPlaylistsMimeType;

src/library/libraryview.h

@@ -53,7 +53,7 @@ class LibraryView : public AutoExpandingTreeView {
   Q_OBJECT
 
  public:
-  LibraryView(QWidget* parent = 0);
+  LibraryView(QWidget* parent = nullptr);
   ~LibraryView();
 
   static const char* kSettingsGroup;

src/library/libraryviewcontainer.h

@@ -28,7 +28,7 @@ class LibraryViewContainer : public QWidget {
   Q_OBJECT
 
  public:
-  LibraryViewContainer(QWidget* parent = 0);
+  LibraryViewContainer(QWidget* parent = nullptr);
   ~LibraryViewContainer();
 
   LibraryFilterWidget* filter() const;

src/library/librarywatcher.h

@@ -38,7 +38,7 @@ class LibraryWatcher : public QObject {
   Q_OBJECT
 
  public:
-  LibraryWatcher(QObject* parent = 0);
+  LibraryWatcher(QObject* parent = nullptr);
 
   static const char* kSettingsGroup;
 

src/moodbar/moodbarcontroller.h

@@ -30,7 +30,7 @@ class MoodbarController : public QObject {
   Q_OBJECT
 
  public:
-  MoodbarController(Application* app, QObject* parent = 0);
+  MoodbarController(Application* app, QObject* parent = nullptr);
 
 signals:
   void CurrentMoodbarDataChanged(const QByteArray& data);

src/moodbar/moodbaritemdelegate.h

@@ -36,7 +36,7 @@ class MoodbarItemDelegate : public QItemDelegate {
 
  public:
   MoodbarItemDelegate(Application* app, PlaylistView* view,
-                      QObject* parent = 0);
+                      QObject* parent = nullptr);
 
   void paint(QPainter* painter, const QStyleOptionViewItem& option,
              const QModelIndex& index) const;

src/moodbar/moodbarloader.h

@@ -32,7 +32,7 @@ class MoodbarLoader : public QObject {
   Q_OBJECT
 
  public:
-  MoodbarLoader(Application* app, QObject* parent = 0);
+  MoodbarLoader(Application* app, QObject* parent = nullptr);
   ~MoodbarLoader();
 
   enum Result {

src/musicbrainz/acoustidclient.h

@@ -38,7 +38,7 @@ class AcoustidClient : public QObject {
   // the Finished signal - they have no meaning to AcoustidClient.
 
  public:
-  AcoustidClient(QObject* parent = 0);
+  AcoustidClient(QObject* parent = nullptr);
 
   // Network requests will be aborted after this interval.
   void SetTimeout(int msec);

src/musicbrainz/musicbrainzclient.h

@@ -38,7 +38,7 @@ class MusicBrainzClient : public QObject {
   // the Finished signal - they have no meaning to MusicBrainzClient.
 
  public:
-  MusicBrainzClient(QObject* parent = 0);
+  MusicBrainzClient(QObject* parent = nullptr);
 
   struct Result {
     Result() : duration_msec_(0), track_(0), year_(-1) {}

src/musicbrainz/tagfetcher.h

@@ -33,7 +33,7 @@ class TagFetcher : public QObject {
   // MusicBrainzClient.
 
  public:
-  TagFetcher(QObject* parent = 0);
+  TagFetcher(QObject* parent = nullptr);
 
   void StartFetch(const SongList& songs);
 

src/networkremote/networkremote.h

@@ -18,7 +18,7 @@ class NetworkRemote : public QObject {
   static const char* kSettingsGroup;
   static const quint16 kDefaultServerPort;
 
-  explicit NetworkRemote(Application* app, QObject* parent = 0);
+  explicit NetworkRemote(Application* app, QObject* parent = nullptr);
   ~NetworkRemote();
 
  public slots:

src/playlist/dynamicplaylistcontrols.h

@@ -26,7 +26,7 @@ class DynamicPlaylistControls : public QWidget {
   Q_OBJECT
 
  public:
-  DynamicPlaylistControls(QWidget* parent = 0);
+  DynamicPlaylistControls(QWidget* parent = nullptr);
   ~DynamicPlaylistControls();
 
 signals:

src/playlist/playlist.h

@@ -78,7 +78,7 @@ class Playlist : public QAbstractListModel {
   Playlist(PlaylistBackend* backend, TaskManager* task_manager,
            LibraryBackend* library, int id,
            const QString& special_type = QString(), bool favorite = false,
-           QObject* parent = 0);
+           QObject* parent = nullptr);
   ~Playlist();
 
   void SkipTracks(const QModelIndexList& source_indexes);

src/playlist/playlistbackend.h

@@ -34,7 +34,7 @@ class PlaylistBackend : public QObject {
   Q_OBJECT
 
  public:
-  Q_INVOKABLE PlaylistBackend(Application* app, QObject* parent = 0);
+  Q_INVOKABLE PlaylistBackend(Application* app, QObject* parent = nullptr);
 
   struct Playlist {
     Playlist() : id(-1), favorite(false), last_played(0) {}

src/playlist/playlistcontainer.h

@@ -36,7 +36,7 @@ class PlaylistContainer : public QWidget {
   Q_OBJECT
 
  public:
-  PlaylistContainer(QWidget* parent = 0);
+  PlaylistContainer(QWidget* parent = nullptr);
   ~PlaylistContainer();
 
   static const char* kSettingsGroup;

src/playlist/playlistfilter.h

@@ -31,7 +31,7 @@ class PlaylistFilter : public QSortFilterProxyModel {
   Q_OBJECT
 
  public:
-  PlaylistFilter(QObject* parent = 0);
+  PlaylistFilter(QObject* parent = nullptr);
   ~PlaylistFilter();
 
   // QAbstractItemModel

src/playlist/playlistheader.h

@@ -30,7 +30,7 @@ class PlaylistHeader : public StretchHeaderView {
 
  public:
   PlaylistHeader(Qt::Orientation orientation, PlaylistView* view,
-                 QWidget* parent = 0);
+                 QWidget* parent = nullptr);
 
   // QWidget
   void contextMenuEvent(QContextMenuEvent* e);

src/playlist/playlistlistcontainer.h

@@ -35,7 +35,7 @@ class PlaylistListContainer : public QWidget {
   Q_OBJECT
 
  public:
-  PlaylistListContainer(QWidget* parent = 0);
+  PlaylistListContainer(QWidget* parent = nullptr);
   ~PlaylistListContainer();
 
   void SetApplication(Application* app);

src/playlist/playlistlistmodel.h

@@ -7,7 +7,7 @@ class PlaylistListModel : public QStandardItemModel {
   Q_OBJECT
 
  public:
-  PlaylistListModel(QObject* parent = 0);
+  PlaylistListModel(QObject* parent = nullptr);
 
   enum Types { Type_Folder, Type_Playlist };
 

src/playlist/playlistmanager.h

@@ -135,7 +135,7 @@ class PlaylistManager : public PlaylistManagerInterface {
   Q_OBJECT
 
  public:
-  PlaylistManager(Application* app, QObject* parent = 0);
+  PlaylistManager(Application* app, QObject* parent = nullptr);
   ~PlaylistManager();
 
   int current_id() const { return current_; }

src/playlist/playlistsequence.h

@@ -32,7 +32,7 @@ class PlaylistSequence : public QWidget {
   Q_OBJECT
 
  public:
-  PlaylistSequence(QWidget* parent = 0, SettingsProvider* settings = 0);
+  PlaylistSequence(QWidget* parent = nullptr, SettingsProvider* settings = 0);
   ~PlaylistSequence();
 
   enum RepeatMode {