UI: Add support for groups to TooltipLinkList and use it in main menu

code/core/src/components/components/tooltip/ListItem.tsx

@@ -123,6 +123,7 @@ const Item = styled.div<ItemProps>(
   ({ theme }) => ({
     width: '100%',
     border: 'none',
+    borderRadius: theme.appBorderRadius,
     background: 'none',
     fontSize: theme.typography.size.s1,
     transition: 'all 150ms ease-out',

code/core/src/components/components/tooltip/Tooltip.tsx

@@ -109,7 +109,7 @@ const Wrapper = styled.div<WrapperProps>(
             drop-shadow(0px 5px 5px rgba(0,0,0,0.05))
             drop-shadow(0 1px 3px rgba(0,0,0,0.1))
           `,
-          borderRadius: theme.appBorderRadius,
+          borderRadius: theme.appBorderRadius + 2,
           fontSize: theme.typography.size.s1,
         }
       : {}

code/core/src/components/components/tooltip/TooltipLinkList.stories.tsx

@@ -191,3 +191,45 @@ export const WithCustomIcon = {
     ],
   },
 } satisfies Story;
+
+export const WithGroups = {
+  args: {
+    links: [
+      [
+        {
+          id: '1',
+          title: 'Link 1',
+          center: 'This is an addition description',
+          href: 'http://google.com',
+          onClick: onLinkClick,
+        },
+      ],
+      [
+        {
+          id: '1',
+          title: 'Link 1',
+          center: 'This is an addition description',
+          icon: <LinkIcon />,
+          href: 'http://google.com',
+          onClick: onLinkClick,
+        },
+        {
+          id: '2',
+          title: 'Link 2',
+          center: 'This is an addition description',
+          href: 'http://google.com',
+          onClick: onLinkClick,
+        },
+      ],
+      [
+        {
+          id: '2',
+          title: 'Link 2',
+          center: 'This is an addition description',
+          href: 'http://google.com',
+          onClick: onLinkClick,
+        },
+      ],
+    ],
+  },
+} satisfies Story;

code/core/src/components/components/tooltip/TooltipLinkList.tsx

@@ -11,13 +11,20 @@ const List = styled.div(
     minWidth: 180,
     overflow: 'hidden',
     overflowY: 'auto',
-    maxHeight: 15.5 * 32, // 11.5 items
+    maxHeight: 15.5 * 32 + 8, // 15.5 items at 32px each + 8px padding
   },
   ({ theme }) => ({
-    borderRadius: theme.appBorderRadius,
+    borderRadius: theme.appBorderRadius + 2,
   })
 );
 
+const Group = styled.div(({ theme }) => ({
+  padding: 4,
+  '& + &': {
+    borderTop: `1px solid ${theme.appBorderColor}`,
+  },
+}));
+
 export interface Link extends Omit<ListItemProps, 'onClick'> {
   id: string;
   onClick?: (
@@ -42,17 +49,26 @@ const Item = ({ id, onClick, ...rest }: ItemProps) => {
 };
 
 export interface TooltipLinkListProps extends ComponentProps<typeof List> {
-  links: Link[];
+  links: Link[] | Link[][];
   LinkWrapper?: LinkWrapperType;
 }
 
 export const TooltipLinkList = ({ links, LinkWrapper, ...props }: TooltipLinkListProps) => {
-  const isIndented = links.some((link) => link.icon);
+  const groups = Array.isArray(links[0]) ? (links as Link[][]) : [links as Link[]];
+  const isIndented = groups.some((group) => group.some((link) => link.icon));
   return (
     <List {...props}>
-      {links.map((link) => (
-        <Item key={link.id} isIndented={isIndented} LinkWrapper={LinkWrapper} {...link} />
-      ))}
+      {groups
+        .filter((group) => group.length)
+        .map((group, index) => {
+          return (
+            <Group key={group.map((link) => link.id).join(`~${index}~`)}>
+              {group.map((link) => (
+                <Item key={link.id} isIndented={isIndented} LinkWrapper={LinkWrapper} {...link} />
+              ))}
+            </Group>
+          );
+        })}
     </List>
   );
 };

code/core/src/manager/components/sidebar/Menu.tsx

@@ -8,9 +8,10 @@ import { CloseIcon, CogIcon } from '@storybook/icons';
 
 import { transparentize } from 'polished';
 
+import type { useMenu } from '../../container/Menu';
 import { useLayout } from '../layout/LayoutProvider';
 
-export type MenuList = ComponentProps<typeof TooltipLinkList>['links'];
+export type MenuList = ReturnType<typeof useMenu>;
 
 export const SidebarIconButton: FC<ComponentProps<typeof Button> & { highlighted: boolean }> =
   styled(IconButton)<
@@ -60,17 +61,21 @@ const SidebarMenuList: FC<{
   menu: MenuList;
   onHide: () => void;
 }> = ({ menu, onHide }) => {
-  const links = useMemo(() => {
-    return menu.map(({ onClick, ...rest }) => ({
-      ...rest,
-      onClick: ((event, item) => {
-        if (onClick) {
-          onClick(event, item);
-        }
-        onHide();
-      }) as ClickHandler,
-    }));
-  }, [menu, onHide]);
+  const links = useMemo(
+    () =>
+      menu.map((group) =>
+        group.map(({ onClick, ...rest }) => ({
+          ...rest,
+          onClick: ((event, item) => {
+            if (onClick) {
+              onClick(event, item);
+            }
+            onHide();
+          }) as ClickHandler,
+        }))
+      ),
+    [menu, onHide]
+  );
   return <TooltipLinkList links={links} />;
 };
 

code/core/src/manager/components/sidebar/TagsFilterPanel.tsx

@@ -7,6 +7,8 @@ import type { Tag } from '@storybook/types';
 
 import type { API } from '@storybook/core/manager-api';
 
+import type { Link } from '../../../components/components/tooltip/TooltipLinkList';
+
 const BUILT_IN_TAGS_SHOW = new Set(['play-fn']);
 
 const Wrapper = styled.div({
@@ -29,56 +31,60 @@ export const TagsFilterPanel = ({
   toggleTag,
   isDevelopment,
 }: TagsFilterPanelProps) => {
-  const theme = useTheme();
   const userTags = allTags.filter((tag) => !BUILT_IN_TAGS_SHOW.has(tag));
   const docsUrl = api.getDocsUrl({ subpath: 'writing-stories/tags#filtering-by-custom-tags' });
-  const items = allTags.map((tag) => {
-    const checked = selectedTags.includes(tag);
-    const id = `tag-${tag}`;
-    return {
-      id,
-      title: tag,
-      right: (
-        <input
-          type="checkbox"
-          id={id}
-          name={id}
-          value={tag}
-          checked={checked}
-          onChange={() => {
-            // The onClick handler higher up the tree will handle the toggle
-            // For controlled inputs, a onClick handler is needed, though
-            // Accessibility-wise this isn't optimal, but I guess that's a limitation
-            // of the current design of TooltipLinkList
-          }}
-        />
-      ),
-      onClick: () => toggleTag(tag),
-    };
-  }) as any[];
+
+  const groups = [
+    allTags.map((tag) => {
+      const checked = selectedTags.includes(tag);
+      const id = `tag-${tag}`;
+      return {
+        id,
+        title: tag,
+        right: (
+          <input
+            type="checkbox"
+            id={id}
+            name={id}
+            value={tag}
+            checked={checked}
+            onChange={() => {
+              // The onClick handler higher up the tree will handle the toggle
+              // For controlled inputs, a onClick handler is needed, though
+              // Accessibility-wise this isn't optimal, but I guess that's a limitation
+              // of the current design of TooltipLinkList
+            }}
+          />
+        ),
+        onClick: () => toggleTag(tag),
+      };
+    }),
+  ] as Link[][];
 
   if (allTags.length === 0) {
-    items.push({
-      id: 'no-tags',
-      title: 'There are no tags. Use tags to organize and filter your Storybook.',
-      isIndented: false,
-    });
+    groups.push([
+      {
+        id: 'no-tags',
+        title: 'There are no tags. Use tags to organize and filter your Storybook.',
+        isIndented: false,
+      },
+    ]);
   }
+
   if (userTags.length === 0 && isDevelopment) {
-    items.push({
-      id: 'tags-docs',
-      title: 'Learn how to add tags',
-      icon: <ShareAltIcon />,
-      href: docsUrl,
-      style: {
-        borderTop: `4px solid ${theme.appBorderColor}`,
+    groups.push([
+      {
+        id: 'tags-docs',
+        title: 'Learn how to add tags',
+        icon: <ShareAltIcon />,
+        href: docsUrl,
       },
-    });
+    ]);
   }
 
   return (
     <Wrapper>
-      <TooltipLinkList links={items} />
+      <TooltipLinkList links={groups} />
     </Wrapper>
   );
 };

code/core/src/manager/container/Menu.tsx

@@ -9,6 +9,8 @@ import { STORIES_COLLAPSE_ALL } from '@storybook/core/core-events';
 import type { API, State } from '@storybook/core/manager-api';
 import { shortcutToHumanString } from '@storybook/core/manager-api';
 
+import type { Link } from '../../components/components/tooltip/TooltipLinkList';
+
 const focusableUIElements = {
   storySearchField: 'storybook-explorer-searchfield',
   storyListMenu: 'storybook-explorer-menu',
@@ -58,8 +60,7 @@ export const useMenu = (
   isPanelShown: boolean,
   isNavShown: boolean,
   enableShortcuts: boolean
-) => {
-  const theme = useTheme();
+): Link[][] => {
   const shortcutKeys = api.getShortcutKeys();
 
   const about = useMemo(
@@ -105,11 +106,8 @@ export const useMenu = (
       title: 'Keyboard shortcuts',
       onClick: () => api.changeSettingsTab('shortcuts'),
       right: enableShortcuts ? <Shortcut keys={shortcutKeys.shortcutsPage} /> : null,
-      style: {
-        borderBottom: `4px solid ${theme.appBorderColor}`,
-      },
     }),
-    [api, enableShortcuts, shortcutKeys.shortcutsPage, theme.appBorderColor]
+    [api, enableShortcuts, shortcutKeys.shortcutsPage]
   );
 
   const sidebarToggle = useMemo(
@@ -244,24 +242,29 @@ export const useMenu = (
   }, [api, enableShortcuts, shortcutKeys]);
 
   return useMemo(
-    () => [
-      about,
-      ...(state.whatsNewData?.status === 'SUCCESS' ? [whatsNew] : []),
-      documentation,
-      shortcuts,
-      sidebarToggle,
-      toolbarToogle,
-      addonsToggle,
-      addonsOrientationToggle,
-      fullscreenToggle,
-      searchToggle,
-      up,
-      down,
-      prev,
-      next,
-      collapse,
-      ...getAddonsShortcuts(),
-    ],
+    () =>
+      [
+        [
+          about,
+          ...(state.whatsNewData?.status === 'SUCCESS' ? [whatsNew] : []),
+          documentation,
+          shortcuts,
+        ],
+        [
+          sidebarToggle,
+          toolbarToogle,
+          addonsToggle,
+          addonsOrientationToggle,
+          fullscreenToggle,
+          searchToggle,
+          up,
+          down,
+          prev,
+          next,
+          collapse,
+        ],
+        getAddonsShortcuts(),
+      ] satisfies Link[][],
     [
       about,
       state,