WIP V3: delete rows works

app/models.py

@@ -431,23 +431,6 @@ class PlaylistRows(Base):
                 track_id=plr.track_id,
             )
 
-    @staticmethod
-    def delete_higher_rows(
-        session: scoped_session, playlist_id: int, maxrow: int
-    ) -> None:
-        """
-        Delete rows in given playlist that have a higher row number
-        than 'maxrow'
-        """
-
-        session.execute(
-            delete(PlaylistRows).where(
-                PlaylistRows.playlist_id == playlist_id,
-                PlaylistRows.plr_rownum > maxrow,
-            )
-        )
-        session.flush()
-
     @classmethod
     def deep_row(
         cls, session: scoped_session, playlist_id: int, row_number: int
@@ -488,6 +471,36 @@ class PlaylistRows(Base):
 
         return session.scalars(stmt).unique().all()
 
+    @staticmethod
+    def delete_higher_rows(
+        session: scoped_session, playlist_id: int, maxrow: int
+    ) -> None:
+        """
+        Delete rows in given playlist that have a higher row number
+        than 'maxrow'
+        """
+
+        session.execute(
+            delete(PlaylistRows).where(
+                PlaylistRows.playlist_id == playlist_id,
+                PlaylistRows.plr_rownum > maxrow,
+            )
+        )
+        session.flush()
+
+    @staticmethod
+    def delete_rows(session: scoped_session, playlist_id: int, row_numbers: List[int]) -> None:
+        """
+        Delete passed rows in given playlist.
+        """
+
+        session.execute(
+            delete(PlaylistRows).where(
+                PlaylistRows.playlist_id == playlist_id,
+                PlaylistRows.plr_rownum.in_(row_numbers)
+            )
+        )
+
     @staticmethod
     def fixup_rownumbers(session: scoped_session, playlist_id: int) -> None:
         """

app/playlistmodel.py

@@ -347,8 +347,11 @@ class PlaylistModel(QAbstractTableModel):
         Delete passed rows from model
         """
 
-        # TODO
-        print(f"Delete rows {row_numbers=}")
+        with Session() as session:
+            PlaylistRows.delete_rows(session, self.playlist_id, row_numbers)
+            PlaylistRows.fixup_rownumbers(session, self.playlist_id)
+            self.refresh_data(session)
+        self.update_track_times()
 
     def display_role(self, row: int, column: int, prd: PlaylistRowData) -> QVariant:
         """

app/playlists.py

@@ -1085,9 +1085,7 @@ class PlaylistTab(QTableView):
 
         # Delete row
         if not current_row and not next_row:
-            self._add_context_menu(
-                "Delete row", lambda: model.delete_rows(self._get_selected_rows())
-            )
+            self._add_context_menu("Delete row", lambda: self._delete_rows())
 
         # Remove track from row
         if track_row and not current_row and not next_row:
@@ -1211,77 +1209,22 @@ class PlaylistTab(QTableView):
         Delete mutliple rows
 
         Actions required:
-        - Remove the rows from the display
-        - Save the playlist
-        - Update track start/end times
+        - Confirm deletion should go ahead
+        - Pass to model to do the deed
         """
 
-        rows_to_delete: List[int] = []
-        with Session() as session:
-            plrs = self.get_selected_playlistrows(session)
-            row_count = len(plrs)
-            if not row_count:
-                return
+        rows_to_delete = self._get_selected_rows()
+        row_count = len(rows_to_delete)
+        if row_count < 1:
+            return
 
-            # Get confirmation
-            plural = "s" if row_count > 1 else ""
-            if not ask_yes_no("Delete rows", f"Really delete {row_count} row{plural}?"):
-                return
+        # Get confirmation
+        plural = "s" if row_count > 1 else ""
+        if not ask_yes_no("Delete rows", f"Really delete {row_count} row{plural}?"):
+            return
 
-            rows_to_delete = [plr.plr_rownum for plr in plrs]
-
-            # Delete rows from database. Would be more efficient to
-            # query then have a single delete.
-            for plr in plrs:
-                session.delete(plr)
-
-            # Remove from display
-            self.remove_rows(rows_to_delete)
-
-            # Need to save the playlist to ensure the PlaylistRows have
-            # the correct row_number
-            self.save_playlist(session)
-
-            # Reset drag mode
-            # self.setDragEnabled(False)
-
-            self._update_start_end_times(session)
-
-    # def _find_next_track_row(
-    #     self, session: scoped_session, starting_row: Optional[int] = None
-    # ) -> Optional[int]:
-    #     """
-    #     Find next track to play. If a starting row is given, start there;
-    #     otherwise, start from top. Skip rows already played.
-
-    #     If not found, return None.
-
-    #     If found, return row number.
-    #     """
-
-    #     if starting_row is None:
-    #         starting_row = 0
-
-    #     track_rows = [
-    #         p.plr_rownum
-    #         for p in PlaylistRows.get_rows_with_tracks(session, self.playlist_id)
-    #     ]
-    #     played_rows = [
-    #         p.plr_rownum
-    #         for p in PlaylistRows.get_played_rows(session, self.playlist_id)
-    #     ]
-    #     for row_number in range(starting_row, self.rowCount()):
-    #         if row_number not in track_rows or row_number in played_rows:
-    #             continue
-    #         plr = selWIP V3: play track workingf._get_row_plr(session, row_number)
-    #         if not plr:
-    #             continue
-    #         if file_is_unreadable(plr.track.path):
-    #             continue
-    #         else:
-    #             return row_number
-
-    #     return None
+        model = cast(PlaylistModel, self.model())
+        model.delete_rows(self._get_selected_rows())
 
     def _get_current_track_row_number(self) -> Optional[int]:
         """Return current track row or None"""