smartplaylists: Move classes to own files

src/smartplaylists/smartplaylistquerywizardpluginsortpage.h

@@ -0,0 +1,45 @@
+/*
+ * 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 SMARTPLAYLISTQUERYWIZARDPLUGINSORTPAGE_H
+#define SMARTPLAYLISTQUERYWIZARDPLUGINSORTPAGE_H
+
+#include <QWizardPage>
+
+class QShowEvent;
+class SmartPlaylistQueryWizardPlugin;
+
+class SmartPlaylistQueryWizardPluginSortPage : public QWizardPage {
+  Q_OBJECT
+
+ public:
+  explicit SmartPlaylistQueryWizardPluginSortPage(SmartPlaylistQueryWizardPlugin *plugin, QWidget *parent, const int next_id);
+
+  void showEvent(QShowEvent *e) override;
+
+  int nextId() const override;
+
+ private:
+  int next_id_;
+
+  SmartPlaylistQueryWizardPlugin *plugin_;
+};
+
+#endif  // SMARTPLAYLISTQUERYWIZARDPLUGINSORTPAGE_H