readme ideas and model caching and loading and such

README.md

@@ -85,3 +85,6 @@ QMultimedia.EncodingMode / Encoding quality...
 - on save metadata modal, run save in another thread (freezing)
 - on save metadata modal, return to previous state in table (jump to current song/restore scroll position)
 - on add to playlist, check if song already exists - prompt user for duplicate?
+- drag and drop song(s) onto PlaylistPane to add to playlist
+- font sizing
+- font choicing? :o

components/MusicTable.py

@@ -93,9 +93,10 @@ class MusicTable(QTableView):
         # Set QTableView model to the Proxy model
         # so it looks like the above note, i guess
 
-        # need a QStandardItemModel to do actions on cells
+        # need a QStandardItemModel to load data & do actions on cells
         self.model2: QStandardItemModel = QStandardItemModel()
         self.proxymodel: QSortFilterProxyModel = QSortFilterProxyModel()
+        self.cache_models: dict[int | None, QStandardItemModel]
         self.search_string: str | None = None
         self.headers = HeaderTags()
         # db names of headers
@@ -722,9 +723,22 @@ class MusicTable(QTableView):
         )
         params = ""
         debug(f'playlist_id: {playlist_id}')
-        # Load a playlist
+        is_playlist = 0
         if len(playlist_id) > 0:
             self.selected_playlist_id = playlist_id[0]
+            is_playlist = 1
+        else:
+            self.selected_playlist_id = None
+
+        # Check cache for already loaded QTableView QStandardItemModel
+        try:
+            new_model = self.cache_models[self.selected_playlist_id]
+            self.model2 = new_model
+        except KeyError:
+            # Store the current loaded model
+            self.cache_models[self.selected_playlist_id] = self.model2
+            # Query for a playlist
+            if is_playlist:
                 debug('load music table a playlist')
                 try:
                     with DBA.DBAccess() as db:
@@ -746,7 +760,7 @@ class MusicTable(QTableView):
                 except Exception as e:
                     error(f"load_music_table() | Unhandled exception 1: {e}")
                     return
-        # Load the entire library
+            # Query for the entire library
             else:
                 debug('load music table a Whole Table')
                 try:
@@ -767,7 +781,7 @@ class MusicTable(QTableView):
                     error(f"load_music_table() | Unhandled exception 2: {e}")
                     return
             # Populate the model
-        row_count: int = 0
+            # row_count: int = 0
             # TODO: total time of playlist
             # but how do i want to do this if user doesn't choose to see length field?
             # spawn new thread and calculate myself?
@@ -775,7 +789,7 @@ class MusicTable(QTableView):
             for row_data in data:
                 # print(row_data)
                 # if "length" in fields:
-            row_count += 1
+                # row_count += 1
                 id, *rest_of_data = row_data
                 # handle different datatypes
                 items = []
@@ -807,7 +821,9 @@ class MusicTable(QTableView):
 
         db_name: str = self.config.get("settings", "db").split("/").pop()
         db_filename = self.config.get("settings", "db")
-        self.playlistStatsSignal.emit(f"Songs: {row_count} | Total time: {total_time} | {db_name} | {db_filename}")
+        # FIXME: total time implementation
+        total_time = 0
+        self.playlistStatsSignal.emit(f"Songs: {self.model2.rowCount()} | Total time: {total_time} | {db_name} | {db_filename}")
         self.loadMusicTableSignal.emit()
         self.connect_data_changed()
         self.connect_layout_changed()