Add internet tabs view and tidal favorites (#167)

src/internet/internetcollectionview.h

@@ -0,0 +1,146 @@
+/*
+ * Strawberry Music Player
+ * This code was part of Clementine
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ * Copyright 2018, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * 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 INTERNETCOLLECTIONVIEW_H
+#define INTERNETCOLLECTIONVIEW_H
+
+#include "config.h"
+
+#include <stdbool.h>
+
+#include <QObject>
+#include <QWidget>
+#include <QSet>
+#include <QString>
+#include <QPixmap>
+#include <QAction>
+#include <QMenu>
+#include <QtEvents>
+
+#include "widgets/autoexpandingtreeview.h"
+#include "core/song.h"
+
+class QContextMenuEvent;
+class QHelpEvent;
+class QMouseEvent;
+class QPaintEvent;
+
+class Application;
+class CollectionBackend;
+class CollectionModel;
+class CollectionFilterWidget;
+
+class InternetCollectionView : public AutoExpandingTreeView {
+  Q_OBJECT
+
+ public:
+  InternetCollectionView(QWidget *parent = nullptr);
+  ~InternetCollectionView();
+  
+  void Init(Application *app, CollectionBackend *backend, CollectionModel *model);
+
+  // Returns Songs currently selected in the collection view.
+  // Please note that the selection is recursive meaning that if for example an album is selected this will return all of it's songs.
+  SongList GetSelectedSongs() const;
+
+  void SetApplication(Application *app);
+  void SetFilter(CollectionFilterWidget *filter);
+
+  // QTreeView
+  void keyboardSearch(const QString &search);
+  void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible);
+
+  int TotalSongs();
+  int TotalArtists();
+  int TotalAlbums();
+
+ public slots:
+  void TotalSongCountUpdated(int count);
+  void TotalArtistCountUpdated(int count);
+  void TotalAlbumCountUpdated(int count);
+  void ReloadSettings();
+
+  void FilterReturnPressed();
+
+  void SaveFocus();
+  void RestoreFocus();
+
+ signals:
+  void GetSongs();
+  void TotalSongCountUpdated_();
+  void TotalArtistCountUpdated_();
+  void TotalAlbumCountUpdated_();
+  void Error(const QString &message);
+  void AddSongs(const SongList songs);
+  void RemoveSongs(const SongList songs);
+
+ protected:
+  // QWidget
+  void paintEvent(QPaintEvent *event);
+  void mouseReleaseEvent(QMouseEvent *e);
+  void contextMenuEvent(QContextMenuEvent *e);
+
+ private slots:
+  void Load();
+  void AddToPlaylist();
+  void AddToPlaylistEnqueue();
+  void AddToPlaylistEnqueueNext();
+  void OpenInNewPlaylist();
+  void AddSongs();
+  void RemoveSongs();
+
+ private:
+  void RecheckIsEmpty();
+  bool RestoreLevelFocus(const QModelIndex &parent = QModelIndex());
+  void SaveContainerPath(const QModelIndex &child);
+
+ private:
+  Application *app_;
+  CollectionBackend *collection_backend_;
+  CollectionModel*collection_model_;
+  CollectionFilterWidget *filter_;
+
+  int total_song_count_;
+  int total_artist_count_;
+  int total_album_count_;
+
+  QPixmap nomusic_;
+
+  QMenu *context_menu_;
+  QModelIndex context_menu_index_;
+  QAction *load_;
+  QAction *add_to_playlist_;
+  QAction *add_to_playlist_enqueue_;
+  QAction *add_to_playlist_enqueue_next_;
+  QAction *open_in_new_playlist_;
+  //QAction *add_songs_;
+  //QAction *remove_songs_;
+
+  bool is_in_keyboard_search_;
+
+  // Save focus
+  Song last_selected_song_;
+  QString last_selected_container_;
+  QSet<QString> last_selected_path_;
+
+};
+
+#endif  // INTERNETCOLLECTIONVIEW_H