Editing book list: Be robust against the book list changing in the background when a book is auto added or similar while a cell is being added. Fixes #2131622 [Miss edit when rows ordre change during editing of a cell](https://bugs.launchpad.net/calibre/+bug/2131622)

src/calibre/gui2/library/delegates.py

@@ -7,6 +7,7 @@ __docformat__ = 'restructuredtext en'
 
 import os
 import sys
+from contextlib import suppress
 from datetime import datetime
 
 from qt.core import (
@@ -208,8 +209,20 @@ class StyledItemDelegate(QStyledItemDelegate):
 
     def createEditor(self, parent, option, index):
         e = self.create_editor(parent, option, index)
+        if (book_id := index.data(Qt.ItemDataRole.UserRole)) and isinstance(book_id, int):
+            setattr(e, 'underlying_book_id', book_id)
         return e
 
+    def setModelData(self, editor, model, index):
+        # Refresh the index using the underlying book_id in case the book list
+        # was changed while the editor was open, for example, by auto add
+        if book_id := getattr(editor, 'underlying_book_id', 0):
+            if (db := getattr(model, 'db', None)) and callable(getattr(db, 'row', None)):
+                with suppress(Exception):
+                    row = db.row(book_id)
+                    index = model.index(row, index.column(), index.parent())
+        super().setModelData(editor, model, index)
+
     def setEditorData(self, editor, index):
         # This method exists because of the ignore_kb_mods_on_edit flag. The
         # flag is cleared after the editor data is set, in set_editor_data. It

src/calibre/gui2/library/models.py

@@ -1179,6 +1179,8 @@ class BooksModel(QAbstractTableModel):  # {{{
         elif role == Qt.ItemDataRole.FontRole and self.styled_columns:
             cname = self.column_map[index.column()]
             return self.styled_columns.get(cname)
+        elif role == Qt.ItemDataRole.UserRole:
+            return self.id(index)
         # elif role == Qt.ItemDataRole.ToolTipRole and index.isValid():
         #     if self.column_map[index.column()] in self.editable_cols:
         #         return (_("Double click to <b>edit</b> me<br><br>"))