Imrove type of apkg export selector/limit

pylib/anki/collection.py

@@ -92,6 +92,33 @@ class LegacyCheckpoint:
 LegacyUndoResult = Union[None, LegacyCheckpoint, LegacyReviewUndo]
 
 
+class ExportLimit:
+    """Limit to what will be exported. Either specific notes, or a deck, or the
+    whole collection (if neither is set). Only the last set value is preserved.
+    """
+
+    _note_ids: Sequence[NoteId] | None
+    _deck_id: DeckId | None
+
+    @property
+    def note_ids(self) -> Sequence[NoteId] | None:
+        return self._note_ids
+
+    @note_ids.setter
+    def note_ids(self, note_ids: Sequence[NoteId] | None) -> None:
+        self._note_ids = note_ids
+        self._deck_id = None
+
+    @property
+    def deck_id(self) -> DeckId | None:
+        return self._deck_id
+
+    @deck_id.setter
+    def deck_id(self, deck_id: DeckId | None) -> None:
+        self._deck_id = deck_id
+        self._note_ids = None
+
+
 class Collection(DeprecatedNamesMixin):
     sched: V1Scheduler | V2Scheduler | V3Scheduler
 
@@ -371,7 +398,7 @@ class Collection(DeprecatedNamesMixin):
         self,
         *,
         out_path: str,
-        selector: DeckId | list[NoteId] | None,
+        limit: ExportLimit,
         with_scheduling: bool,
         with_media: bool,
     ) -> int:
@@ -381,12 +408,12 @@ class Collection(DeprecatedNamesMixin):
             with_media=with_media,
             legacy=True,
         )
-        if selector is None:
-            request.whole_collection.SetInParent()
-        elif isinstance(selector, list):
-            request.note_ids.note_ids.extend(selector)
+        if limit.deck_id is not None:
+            request.deck_id = limit.deck_id
+        elif limit.note_ids is not None:
+            request.note_ids.note_ids.extend(limit.note_ids)
         else:
-            request.deck_id = selector
+            request.whole_collection.SetInParent()
         return self._backend.export_anki_package(request)
 
     # Object helpers

qt/aqt/import_export/exporting.py

@@ -13,6 +13,7 @@ from typing import Sequence, Type
 
 import aqt.forms
 import aqt.main
+from anki.collection import ExportLimit
 from anki.decks import DeckId, DeckNameId
 from anki.notes import NoteId
 from aqt import gui_hooks
@@ -106,14 +107,16 @@ class ExportDialog(QDialog):
         return path
 
     def options(self, out_path: str) -> Options:
+        limit = ExportLimit()
+        limit.deck_id = self.current_deck_id()
+        limit.note_ids = self.nids
         return Options(
             out_path=out_path,
             include_scheduling=self.frm.includeSched.isChecked(),
             include_media=self.frm.includeMedia.isChecked(),
             include_tags=self.frm.includeTags.isChecked(),
             include_html=self.frm.includeHTML.isChecked(),
-            deck_id=self.current_deck_id(),
-            note_ids=self.nids,
+            limit=limit,
         )
 
     def current_deck_id(self) -> DeckId | None:
@@ -142,8 +145,7 @@ class Options:
     include_media: bool
     include_tags: bool
     include_html: bool
-    deck_id: DeckId | None
-    note_ids: Sequence[NoteId] | None
+    limit: ExportLimit
 
 
 class Exporter(ABC):
@@ -210,7 +212,7 @@ class ApkgExporter(Exporter):
             parent=mw,
             op=lambda col: col.export_anki_package(
                 out_path=options.out_path,
-                selector=options.note_ids or options.deck_id or None,
+                limit=options.limit,
                 with_scheduling=options.include_scheduling,
                 with_media=options.include_media,
             ),