fix: navbar should be sticky on mobile when hideNavbar to never

e2e/fixtures/nav-link-item-with-hash/doc/index.mdx

@@ -4,5 +4,5 @@ pageType: custom
 
 <div id="pageA">contentA</div>
 
-<div id="pageB">contentB</div>
+<div id="pageB">A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF A LOT OF CONTENT A LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF CONTENT A LOT OF A LOT OF CONTENT A LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENTA LOT OF CONTENT</div>
 <div id="pageC">contentC</div>

e2e/fixtures/nav-link-item-with-hash/rspress.config.ts

@@ -7,6 +7,7 @@ export default defineConfig({
     cleanUrls: true,
   },
   themeConfig: {
+    hideNavbar: 'never',
     nav: [
       {
         text: 'PageA',

e2e/tests/nav-link-item-with-hash.test.ts

@@ -42,4 +42,36 @@ test.describe('basic test', async () => {
     await page.getByRole('link', { name: 'PageC' }).click();
     await expect(page.locator('.rspress-nav-screen')).not.toBeVisible();
   });
+
+  test('Navbar should be visible on mobile when we scroll down with hideNavbar to never', async ({
+    page,
+  }) => {
+    await page.setViewportSize({ width: 375, height: 812 });
+
+    await page.goto(`http://localhost:${appPort}/`);
+
+    await page.evaluate(() => {
+      window.scrollBy(0, 800);
+    });
+
+    // Allow to check if the rspress-nav is in the viewport
+    // toBeVisible() doesn't work here because it check the visibility and the display property
+    const isInViewport = await page.evaluate(sel => {
+      const element = document.querySelector(sel);
+
+      if (!element) return false;
+
+      const rect = element.getBoundingClientRect();
+      return (
+        rect.top >= 0 &&
+        rect.left >= 0 &&
+        rect.bottom <=
+          (window.innerHeight || document.documentElement.clientHeight) &&
+        rect.right <=
+          (window.innerWidth || document.documentElement.clientWidth)
+      );
+    }, '.rspress-nav');
+
+    expect(isInViewport).toBeTruthy();
+  });
 });

packages/theme-default/src/components/Nav/index.tsx

@@ -27,7 +27,7 @@ const DEFAULT_NAV_POSITION = 'right';
 export function Nav(props: NavProps) {
   const { beforeNavTitle, afterNavTitle, beforeNav, afterNavMenu, navTitle } =
     props;
-  const { siteData } = usePageData();
+  const { siteData, page } = usePageData();
   const { base } = siteData;
   const { pathname } = useLocation();
   const [isMobile, setIsMobile] = useState(false);
@@ -125,17 +125,23 @@ export function Nav(props: NavProps) {
       </div>
     );
   };
+
+  const computeNavPosition = () => {
+    // On doc page we have the menu bar that is already sticky
+    if (siteData.themeConfig.hideNavbar === 'never' && page.pageType !== 'doc')
+      return 'sticky';
+
+    return 'relative';
+  };
+
   return (
     <>
       {beforeNav}
       <div
         className={`${styles.navContainer} rspress-nav px-6 ${
           // Only hidden when it's not mobile
           hiddenNav && !isMobile ? styles.hidden : ''
-        }`}
-        style={{
-          position: isMobile ? 'relative' : 'sticky',
-        }}
+        } ${computeNavPosition()}`}
       >
         <div
           className={`${styles.container} flex justify-between items-center h-full`}