Use window scroll for grouped virtuosos

src/modules/browse/screens/Browse.tsx

@@ -18,6 +18,7 @@ import { TabsMenu } from '@/modules/core/components/tabs/TabsMenu.tsx';
 import { Migration } from '@/modules/migration/screens/Migration.tsx';
 import { useResizeObserver } from '@/modules/core/hooks/useResizeObserver.tsx';
 import { useNavBarContext } from '@/modules/navigation-bar/contexts/NavbarContext.tsx';
+import { GROUPED_VIRTUOSO_Z_INDEX } from '@/modules/core/AppRoute.constants.ts';
 
 enum Tabs {
     SOURCE = 'source',
@@ -51,6 +52,7 @@ export function Browse() {
         <TabsWrapper>
             <TabsMenu
                 ref={tabsMenuRef}
+                sx={{ zIndex: GROUPED_VIRTUOSO_Z_INDEX }}
                 variant="fullWidth"
                 value={tabName}
                 onChange={(_, newTab) => setTabSearchParam(newTab, 'replaceIn')}

src/modules/core/AppRoute.constants.ts

@@ -181,3 +181,5 @@ type ExtractStringPaths<T> = T extends { path: infer P }
     : ExtractChildRouteStringPaths<T>;
 
 export type StaticAppRoute = ExtractStringPaths<(typeof AppRoutes)[keyof typeof AppRoutes]>;
+
+export const GROUPED_VIRTUOSO_Z_INDEX = 2;

src/modules/core/components/virtuoso/StyledGroupedVirtuoso.tsx

@@ -6,10 +6,19 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/.
  */
 
-import { GroupedVirtuoso } from 'react-virtuoso';
+import { ContextProp, GroupedVirtuoso, TopItemListProps } from 'react-virtuoso';
-import { ComponentProps } from 'react';
+import { ComponentProps, useMemo } from 'react';
+import Box from '@mui/material/Box';
 import { useNavBarContext } from '@/modules/navigation-bar/contexts/NavbarContext.tsx';
 
+const StickyVirtuosoHeaderWithOffset =
+    (topOffset: number) =>
+    ({ children, ...args }: TopItemListProps & ContextProp<unknown>) => (
+        <Box {...args} style={{ ...args.style, top: topOffset }}>
+            {children}
+        </Box>
+    );
+
 export const StyledGroupedVirtuoso = ({
     heightToSubtract = 0,
     style,
@@ -17,9 +26,19 @@ export const StyledGroupedVirtuoso = ({
 }: ComponentProps<typeof GroupedVirtuoso> & { heightToSubtract?: number }) => {
     const { appBarHeight, bottomBarHeight } = useNavBarContext();
 
+    const TopItemList = useMemo(
+        () => StickyVirtuosoHeaderWithOffset(appBarHeight + heightToSubtract),
+        [appBarHeight, heightToSubtract],
+    );
+
     return (
         <GroupedVirtuoso
+            useWindowScroll
             {...props}
+            components={{
+                TopItemList,
+                ...props.components,
+            }}
             style={{
                 ...style,
                 height: `calc(100vh - ${heightToSubtract}px - ${appBarHeight}px - ${bottomBarHeight}px - ${!bottomBarHeight ? 'env(safe-area-inset-bottom)' : '0px'})`,

src/modules/history/screens/History.tsx

@@ -86,10 +86,6 @@ export const History: React.FC = () => {
 
     return (
         <StyledGroupedVirtuoso
-            style={{
-                // override Virtuoso default values and set them with class
-                height: 'undefined',
-            }}
             components={{
                 Footer: () => (isLoading ? <LoadingPlaceholder usePadding /> : null),
             }}

src/modules/updates/screens/Updates.tsx

@@ -23,9 +23,11 @@ import { getErrorMessage } from '@/lib/HelperFunctions.ts';
 import { ChapterUpdateCard } from '@/modules/updates/components/ChapterUpdateCard.tsx';
 import { useNavBarContext } from '@/modules/navigation-bar/contexts/NavbarContext.tsx';
 import { Chapters } from '@/modules/chapter/services/Chapters.ts';
+import { GROUPED_VIRTUOSO_Z_INDEX } from '@/modules/core/AppRoute.constants.ts';
 
 export const Updates: React.FC = () => {
     const { t } = useTranslation();
+    const { appBarHeight } = useNavBarContext();
 
     const { setTitle, setAction } = useNavBarContext();
     const {
@@ -107,6 +109,10 @@ export const Updates: React.FC = () => {
             <Typography
                 ref={lastUpdateTimestampCompRef}
                 sx={{
+                    position: 'sticky',
+                    top: appBarHeight,
+                    zIndex: GROUPED_VIRTUOSO_Z_INDEX,
+                    backgroundColor: 'background.default',
                     marginLeft: '10px',
                     paddingTop: (theme) => ({ [theme.breakpoints.up('sm')]: { paddingTop: '6px' } }),
                 }}
@@ -117,10 +123,6 @@ export const Updates: React.FC = () => {
             </Typography>
             <StyledGroupedVirtuoso
                 heightToSubtract={lastUpdateTimestampCompHeight}
-                style={{
-                    // override Virtuoso default values and set them with class
-                    height: 'undefined',
-                }}
                 components={{
                     Footer: () => (isLoading ? <LoadingPlaceholder usePadding /> : null),
                 }}