handle table row indexing with group rows

src/renderer/components/item-list/item-table-list/columns/row-index-column.tsx

@@ -29,7 +29,19 @@ export const RowIndexColumn = (props: ItemTableListInnerColumn) => {
 };
 
 const DefaultRowIndexColumn = (props: ItemTableListInnerColumn) => {
-    const { controls, enableExpansion } = props;
+    const {
+        adjustedRowIndexMap,
+        controls,
+        data,
+        enableExpansion,
+        enableHeader,
+        internalState,
+        itemType,
+        rowIndex,
+    } = props;
+
+    const adjustedRowIndex =
+        adjustedRowIndexMap?.get(rowIndex) ?? (enableHeader ? rowIndex : rowIndex + 1);
 
     if (enableExpansion) {
         return (
@@ -41,28 +53,32 @@ const DefaultRowIndexColumn = (props: ItemTableListInnerColumn) => {
                     onClick={(e) =>
                         controls.onExpand?.({
                             event: e,
-                            internalState: props.internalState,
-                            item: props.data[props.rowIndex] as ItemListItem,
-                            itemType: props.itemType,
+                            internalState,
+                            item: data[rowIndex] as ItemListItem,
+                            itemType,
                         })
                     }
                     size="xs"
                     variant="subtle"
                 />
                 <Text className="hide-on-hover" isMuted isNoSelect>
-                    {props.rowIndex}
+                    {adjustedRowIndex}
                 </Text>
             </TableColumnContainer>
         );
     }
 
-    return <TableColumnTextContainer {...props}>{props.rowIndex}</TableColumnTextContainer>;
+    return <TableColumnTextContainer {...props}>{adjustedRowIndex}</TableColumnTextContainer>;
 };
 
 const QueueSongRowIndexColumn = (props: ItemTableListInnerColumn) => {
     const status = usePlayerStatus();
     const { isActive } = useIsCurrentSong(props.data[props.rowIndex] as QueueSong);
 
+    const adjustedRowIndex =
+        props.adjustedRowIndexMap?.get(props.rowIndex) ??
+        (props.enableHeader ? props.rowIndex : props.rowIndex + 1);
+
     return (
         <TableColumnTextContainer {...props}>
             {isActive ? (
@@ -76,7 +92,7 @@ const QueueSongRowIndexColumn = (props: ItemTableListInnerColumn) => {
                     </Flex>
                 )
             ) : (
-                props.rowIndex
+                adjustedRowIndex
             )}
         </TableColumnTextContainer>
     );

src/renderer/components/item-list/item-table-list/item-table-list.tsx

@@ -226,8 +226,52 @@ const VirtualizedTableGrid = React.memo(
             return result;
         }, [data, enableHeader, groups]);
 
+        const adjustedRowIndexMap = useMemo(() => {
+            const map = new Map<number, number>();
+
+            if (!groups || groups.length === 0) {
+                const startIndex = enableHeader ? 1 : 0;
+                const endIndex = enableHeader ? dataWithGroups.length : dataWithGroups.length;
+                for (let rowIndex = startIndex; rowIndex < endIndex; rowIndex++) {
+                    map.set(rowIndex, enableHeader ? rowIndex : rowIndex + 1);
+                }
+                return map;
+            }
+
+            const groupIndexes: number[] = [];
+            let cumulativeDataIndex = 0;
+            const headerOffset = enableHeader ? 1 : 0;
+
+            groups.forEach((group, groupIndex) => {
+                const groupHeaderIndex = headerOffset + cumulativeDataIndex + groupIndex;
+                groupIndexes.push(groupHeaderIndex);
+                cumulativeDataIndex += group.itemCount;
+            });
+
+            let adjustedIndex = 1;
+            const startIndex = enableHeader ? 0 : 0;
+            const endIndex = dataWithGroups.length;
+
+            for (let rowIndex = startIndex; rowIndex < endIndex; rowIndex++) {
+                if (enableHeader && rowIndex === 0) {
+                    // Header row
+                    map.set(rowIndex, 0);
+                } else if (groupIndexes.includes(rowIndex)) {
+                    // Group header row - don't increment adjustedIndex
+                    map.set(rowIndex, 0);
+                } else {
+                    // Data row
+                    map.set(rowIndex, adjustedIndex);
+                    adjustedIndex++;
+                }
+            }
+
+            return map;
+        }, [dataWithGroups, enableHeader, groups]);
+
         const itemProps: TableItemProps = useMemo(
             () => ({
+                adjustedRowIndexMap,
                 calculatedColumnWidths,
                 cellPadding,
                 columns: parsedColumns,
@@ -256,6 +300,7 @@ const VirtualizedTableGrid = React.memo(
                 tableId,
             }),
             [
+                adjustedRowIndexMap,
                 calculatedColumnWidths,
                 cellPadding,
                 controls,
@@ -577,6 +622,7 @@ export interface TableGroupHeader {
 }
 
 export interface TableItemProps {
+    adjustedRowIndexMap?: Map<number, number>; // Maps rowIndex to adjustedRowIndex (1-indexed, excluding group rows)
     calculatedColumnWidths?: number[];
     cellPadding?: ItemTableListProps['cellPadding'];
     columns: ItemTableListColumnConfig[];