Add smart playlists, ratings and Qobuz

Fixes #259
Fixes #264

src/smartplaylists/smartplaylistwizardplugin.h

@@ -0,0 +1,60 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ *
+ * Strawberry 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.
+ *
+ * Strawberry 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 Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef SMARTPLAYLISTWIZARDPLUGIN_H
+#define SMARTPLAYLISTWIZARDPLUGIN_H
+
+#include <QObject>
+
+#include "playlistgenerator_fwd.h"
+
+class QWizard;
+
+class Application;
+class CollectionBackend;
+
+class SmartPlaylistWizardPlugin : public QObject {
+  Q_OBJECT
+
+ public:
+  explicit SmartPlaylistWizardPlugin(Application *app, CollectionBackend *collection, QObject *parent);
+
+  virtual QString type() const = 0;
+  virtual QString name() const = 0;
+  virtual QString description() const = 0;
+  virtual bool is_dynamic() const { return false; }
+  int start_page() const { return start_page_; }
+
+  virtual void SetGenerator(PlaylistGeneratorPtr gen) = 0;
+  virtual PlaylistGeneratorPtr CreateGenerator() const = 0;
+
+  void Init(QWizard *wizard, const int finish_page_id);
+
+ protected:
+  virtual int CreatePages(QWizard *wizard, const int finish_page_id) = 0;
+
+  Application *app_;
+  CollectionBackend *collection_;
+
+ private:
+  int start_page_;
+};
+
+#endif  // SMARTPLAYLISTWIZARDPLUGIN_H