Clementine-audio-player-Mac.../src/playlist/playlistlistmodel.h

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#ifndef PLAYLISTLISTMODEL_H
#define PLAYLISTLISTMODEL_H
#include <QStandardItemModel>
class PlaylistListModel : public QStandardItemModel {
Q_OBJECT
public:
PlaylistListModel(QObject* parent = nullptr);
enum Types { Type_Folder, Type_Playlist };
enum Roles { Role_Type = Qt::UserRole, Role_PlaylistId };
bool dropMimeData(const QMimeData* data, Qt::DropAction action, int row,
int column, const QModelIndex& parent);
// These icons will be used for newly created playlists and folders.
// The caller will need to set these icons on existing items if there are any.
void SetIcons(const QIcon& playlist_icon, const QIcon& folder_icon);
const QIcon& playlist_icon() const { return playlist_icon_; }
const QIcon& folder_icon() const { return folder_icon_; }
// Walks from the given item to the root, returning the / separated path of
// all the parent folders. The path includes this item if it is a folder.
QString ItemPath(const QStandardItem* item) const;
// Finds the playlist with the given ID, returns 0 if it doesn't exist.
QStandardItem* PlaylistById(int id) const;
// Finds the folder with the given path, creating it (and its parents) if they
// do not exist. Returns invisibleRootItem() if path is empty.
QStandardItem* FolderByPath(const QString& path);
// Returns a new folder item with the given name. The item isn't added to
// the model yet.
QStandardItem* NewFolder(const QString& name) const;
// Returns a new playlist item with the given name and ID. The item isn't
// added to the model yet.
QStandardItem* NewPlaylist(const QString& name, int id) const;
// QStandardItemModel
bool setData(const QModelIndex& index, const QVariant& value, int role);
signals:
void PlaylistPathChanged(int id, const QString& new_path);
void PlaylistRenamed(int id, const QString& new_name);
private slots:
void RowsChanged(const QModelIndex& begin, const QModelIndex& end);
void RowsAboutToBeRemoved(const QModelIndex& parent, int start, int end);
void RowsInserted(const QModelIndex& parent, int start, int end);
private:
void AddRowMappings(const QModelIndex& begin, const QModelIndex& end);
void AddRowItem(QStandardItem* item, const QString& parent_path);
void UpdatePathsRecursive(const QModelIndex& parent);
private:
bool dropping_rows_;
QIcon playlist_icon_;
QIcon folder_icon_;
QMap<int, QStandardItem*> playlists_by_id_;
QMap<QString, QStandardItem*> folders_by_path_;
};
#endif // PLAYLISTLISTMODEL_H