fix(docs): side menu sticky on desktop + mobile

.changeset/giant-lizards-push.md

@@ -0,0 +1,2 @@
+---
+---

packages/apps/docs/package.json

@@ -61,6 +61,7 @@
     "react-dom": "^18.2.0",
     "react-markdown": "~8.0.7",
     "react-tweet": "~3.1.1",
+    "react-use": "^17.4.0",
     "redoc": "~2.0.0",
     "rehype-pretty-code": "~0.9.5",
     "rehype-raw": "^7.0.0",

packages/apps/docs/src/components/Layout/components/Menu/Menu.tsx

@@ -6,34 +6,44 @@ import {
 } from './menu.css';
 
 import classNames from 'classnames';
-import type { FC, ReactNode } from 'react';
-import React from 'react';
+import type { FC, ForwardedRef, ReactNode } from 'react';
+import React, { forwardRef } from 'react';
 
 interface IProps {
   children?: ReactNode;
   dataCy?: string;
   isOpen?: boolean;
   inLayout?: boolean;
   layout: 'landing' | 'normal';
+  style?: React.CSSProperties;
+  ref?: ForwardedRef<HTMLDivElement>;
 }
 
-export const Menu: FC<IProps> = ({
-  children,
-  dataCy,
-  isOpen = false,
-  inLayout = false,
-  layout = 'normal',
-}) => {
-  const classes = classNames(
-    menuClass,
-    menuOpenVariants[isOpen ? 'isOpen' : 'isClosed'],
-    menuInLayoutVariants[inLayout ? 'true' : 'false'],
-    menuLayoutVariants[layout],
-  );
+export const Menu: FC<IProps> = forwardRef<HTMLDivElement, IProps>(
+  (
+    {
+      children,
+      dataCy,
+      isOpen = false,
+      inLayout = false,
+      layout = 'normal',
+      style,
+    },
+    ref,
+  ) => {
+    const classes = classNames(
+      menuClass,
+      menuOpenVariants[isOpen ? 'isOpen' : 'isClosed'],
+      menuInLayoutVariants[inLayout ? 'true' : 'false'],
+      menuLayoutVariants[layout],
+    );
 
-  return (
-    <div data-cy={dataCy} className={classes}>
-      {children}
-    </div>
-  );
-};
+    return (
+      <div data-cy={dataCy} className={classes} style={style} ref={ref}>
+        {children}
+      </div>
+    );
+  },
+);
+
+Menu.displayName = 'Menu';

packages/apps/docs/src/components/Layout/components/Menu/menu.css.ts

@@ -1,19 +1,21 @@
-import { breakpoints, sprinkles } from '@kadena/react-ui/theme';
+import { breakpoints, sprinkles, vars } from '@kadena/react-ui/theme';
 
 import { $$leftSideWidth, $$sideMenu } from '../../global.css';
 
 import { style, styleVariants } from '@vanilla-extract/css';
 
 export const menuClass = style([
   sprinkles({
-    position: 'absolute',
-    paddingBottom: '$40',
+    position: 'fixed',
     height: '100%',
     width: '100%',
     background: '$background',
     overflow: 'hidden',
+    top: '$17',
+    bottom: 0,
   }),
   {
+    height: `calc(100vh - ${vars.sizes.$13})`,
     gridArea: 'menu',
     gridRow: '2 / span 3',
     zIndex: $$sideMenu,
@@ -25,9 +27,13 @@ export const menuClass = style([
         width: $$leftSideWidth,
       },
       [`screen and ${breakpoints.md}`]: {
-        position: 'relative',
+        position: 'sticky',
+        top: vars.sizes.$18,
+        bottom: 'auto',
+        height: `calc(100vh - ${vars.sizes.$18})`,
         transform: 'translateX(0)',
         background: 'transparent',
+        paddingBottom: vars.sizes.$40,
       },
     },
   },

packages/apps/docs/src/components/Layout/components/SideMenu/menuCard.css.ts

@@ -1,4 +1,4 @@
-import { sprinkles } from '@kadena/react-ui/theme';
+import { breakpoints, sprinkles } from '@kadena/react-ui/theme';
 
 import { style, styleVariants } from '@vanilla-extract/css';
 
@@ -10,8 +10,12 @@ export const menuCardClass = style([
     paddingX: '$6',
   }),
   {
-    overflowY: 'scroll',
     transition: 'transform .2s ease',
+    '@media': {
+      [`screen and ${breakpoints.md}`]: {
+        overflowY: 'scroll',
+      },
+    },
   },
 ]);
 

packages/apps/docs/src/components/Layout/components/SideMenu/sideMenu.css.ts

@@ -5,10 +5,13 @@ import { style } from '@vanilla-extract/css';
 export const sideMenuClass = style([
   sprinkles({
     position: 'relative',
-
     height: '100%',
     paddingBottom: '$25',
   }),
+  {
+    overflowY: 'auto',
+    overflowX: 'hidden',
+  },
 ]);
 
 export const listClass = style([

packages/apps/docs/src/components/Layout/components/Template/Template.tsx

@@ -1,11 +1,14 @@
+import { breakpoints } from '@kadena/react-ui/theme';
+
 import { Footer } from '../Footer';
 import { Menu, MenuBack } from '../Menu';
 import { SideMenu } from '../SideMenu';
 
-import { useMenu } from '@/hooks';
+import { useMenu, useWindowScroll } from '@/hooks';
 import type { IMenuItem } from '@/types/Layout';
 import type { FC, ReactNode } from 'react';
-import React from 'react';
+import React, { useEffect, useRef, useState } from 'react';
+import { useMedia } from 'react-use';
 
 interface IProps {
   children?: ReactNode;
@@ -21,6 +24,47 @@ export const Template: FC<IProps> = ({
   hideSideMenu = false,
 }) => {
   const { isMenuOpen, closeMenu } = useMenu();
+  const isMediumDevice = useMedia(breakpoints.md);
+  const [{ y }] = useWindowScroll();
+  const mainContentRef = useRef<HTMLDivElement>(null);
+  const [initialTopSpacing, setInitialTopSpacing] = useState('');
+  const [style, setStyle] = useState<React.CSSProperties>({});
+  // Enable position if it's minimum medium device size
+  // and layout type is landing
+  const enablePositioning = layout === 'landing' && isMediumDevice;
+
+  useEffect(() => {
+    if (!enablePositioning) return;
+    // Get the initial paddingTop value at initial rendering
+    const paddingTop = getComputedStyle(
+      mainContentRef.current as HTMLDivElement,
+    )?.paddingTop;
+    // When we get css from computed style it comes with `px` suffix
+    const onlyValue = paddingTop.split('px')[0];
+    setInitialTopSpacing(onlyValue);
+
+    // Reset style value when we navigate to different pages
+    return () => {
+      setStyle({});
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  useEffect(() => {
+    if (!mainContentRef.current || !enablePositioning) {
+      setStyle({});
+      return;
+    }
+
+    // From the initial top spacing subtract the window scroll value
+    //  to maintain the scrolling effect
+    const paddingValue = parseInt(initialTopSpacing) - (y || 0);
+
+    if (paddingValue <= 0) return;
+    setStyle({
+      paddingTop: paddingValue,
+    });
+  }, [y, initialTopSpacing, enablePositioning]);
 
   return (
     <>
@@ -30,6 +74,8 @@ export const Template: FC<IProps> = ({
         isOpen={isMenuOpen}
         inLayout={!hideSideMenu}
         layout={layout}
+        ref={mainContentRef}
+        style={style}
       >
         <SideMenu closeMenu={closeMenu} menuItems={menuItems} />
       </Menu>

packages/apps/docs/src/hooks/index.ts

@@ -3,3 +3,4 @@ export { useOpenSearch } from './useOpenSearch';
 export { useSearch } from './useSearch';
 export * from './useGetBlogs';
 export { useMenu, MenuProvider } from './useMenu';
+export { useWindowScroll } from './useWindowScroll';

packages/apps/docs/src/hooks/useWindowScroll.ts

@@ -0,0 +1,28 @@
+import React from 'react';
+
+export function useWindowScroll(): [
+  {
+    x: number;
+    y: number;
+  },
+] {
+  const [state, setState] = React.useState({
+    x: 0,
+    y: 0,
+  });
+
+  React.useLayoutEffect((): (() => void) => {
+    const handleScroll = (): void => {
+      setState({ x: window.scrollX, y: window.scrollY });
+    };
+
+    handleScroll();
+    window.addEventListener('scroll', handleScroll);
+
+    return () => {
+      window.removeEventListener('scroll', handleScroll);
+    };
+  }, []);
+
+  return [state];
+}