Did some memory optimisation, moved some files and created a completely not tested gui class that will list an artist's tracks.

Made tracks return an already existing object when they get created with a path of an already existing track object.

wobuzz/library/library.py

@@ -2,9 +2,10 @@
 
 import os
 from PyQt6.QtWidgets import QTabWidget, QAbstractItemView
+
 from ..player.playlist import Playlist
-from ..ui.library import LibraryWidget
+from ..ui.library.library import LibraryWidget
-from ..ui.playlist import PlaylistView
+from ..ui.playlist_view import PlaylistView
 
 
 class Library:
@@ -18,9 +19,13 @@ class Library:
         self.main_library_widget = LibraryWidget(self)
         self.library_widgets = [self.main_library_widget]
 
+        self.loaded_tracks = {}  # dict of {track path: track}
+
         self.playlists = []
         self.temporary_playlist = None
 
+        self.artist_playlists = []
+
     def load(self):
         self.load_playlists()
 
@@ -77,6 +82,8 @@ class Library:
         if self.app.player.current_playlist is not None:
             self.app.settings.latest_playlist = self.app.player.current_playlist.path
 
+        print(self.loaded_tracks)
+
     def new_playlist(self):
         playlist = Playlist(self.app, self.app.utils.unique_name("New Playlist"))
         playlist.loaded = True
@@ -121,3 +128,11 @@ class Library:
     def import_playlist(self, playlist_path: str):
         self.open_playlist(playlist_path)
 
+    def loaded_track(self, track_path: str):
+        """
+        Returns either a loaded track with the given path or None if there is none.
+        """
+
+        if track_path in self.loaded_tracks:
+            return self.loaded_tracks[track_path]
+

wobuzz/player/track.py

@@ -46,6 +46,9 @@ class Track:
         self.app = app
         self.path = path
 
+        # add self to loaded tracks to make sure that no other track object is created for this track
+        app.library.loaded_tracks[self.path] = self
+
         if metadata is None:
             # load metadata from audio file
             tags = TinyTag.get(path, ignore_errors=True, duration=False)
@@ -66,6 +69,18 @@ class Track:
         if cache:
             self.cache()
 
+    def __new__(cls, app, path: str, cache: bool=False, metadata: TrackMetadata=None):
+        loaded_track = app.library.loaded_track(path)
+
+        if loaded_track is not None:
+            if cache:
+                loaded_track.cache()
+
+            return loaded_track
+
+        else:
+            return super().__new__(cls)
+
     def set_occurrences(self):
         # set track item for every occurrence of track in a playlist
 

wobuzz/ui/library/__init__.py

@@ -0,0 +1 @@
+#!/usr/bin/python3

wobuzz/ui/library/artist_view.py

@@ -0,0 +1,42 @@
+#!/usr/bin/python3
+
+from PyQt6.QtWidgets import QTreeWidget, QAbstractItemView
+
+from ..playlist_view import PlaylistView
+
+
+class ArtistView(PlaylistView):
+    def __init__(self, playlist, library_widget, parent=None):
+        QTreeWidget.__init__(self, parent)
+
+        self.playlist = playlist
+        self.library_widget = library_widget
+
+        self.app = playlist.app
+
+        self.header = self.header()
+        self.header.setSectionsClickable(True)
+        self.header.setSortIndicatorShown(True)
+
+        playlist.views[id(self.library_widget)] = self  # let the playlist know that this view exists
+
+        self.setSelectionMode(QAbstractItemView.SelectionMode.ExtendedSelection)
+
+        self.setColumnCount(3)
+
+        headers = [
+            "#",
+            "Title",
+            "Artist",
+            "Album",
+        ]
+
+        self.setHeaderLabels(headers)
+
+        self.itemActivated.connect(self.on_track_activation)
+        self.header.sectionClicked.connect(self.on_header_click)
+        self.sort_signal.connect(self.sortItems)
+
+    def setDragDropMode(self, behavior):
+        pass  # user should not be able to sort the playlist manually
+

wobuzz/ui/library/library.py

@@ -2,7 +2,7 @@
 
 from PyQt6.QtGui import QIcon
 from PyQt6.QtWidgets import QToolBox, QLabel, QToolButton
-from .playlist_tabs import PlaylistTabs
+from wobuzz.ui.playlist_tabs import PlaylistTabs
 
 
 class LibraryWidget(QToolBox):

wobuzz/ui/library/library_dock.py

@@ -1,7 +1,7 @@
 #!/usr/bin/python3
 
 from PyQt6.QtWidgets import QDockWidget
-from .library import LibraryWidget
+from wobuzz.ui.library import LibraryWidget
 
 
 class LibraryDock(QDockWidget):