├── .gitignore
├── README.md
├── package-lock.json
├── package.json
├── public
    ├── favicon.ico
    ├── index.html
    ├── logo192.png
    ├── logo512.png
    ├── manifest.json
    └── robots.txt
├── src
    ├── App.js
    ├── App.scss
    ├── App.test.js
    ├── components
    │   ├── Header
    │   │   ├── Header.scss
    │   │   └── index.jsx
    │   └── ProgressBar
    │   │   ├── ProgressBar.scss
    │   │   └── index.jsx
    ├── hooks
    │   └── useScrollProgress.js
    ├── index.css
    ├── index.js
    ├── logo.svg
    ├── pages
    │   ├── ContainerScroll
    │   │   ├── ContainerScroll.scss
    │   │   └── index.jsx
    │   └── FullPageScroll
    │   │   ├── FullPageScroll.scss
    │   │   └── index.jsx
    ├── serviceWorker.js
    └── setupTests.js
└── yarn.lock


/.gitignore:
--------------------------------------------------------------------------------
 1 | # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
 2 | 
 3 | # dependencies
 4 | /node_modules
 5 | /.pnp
 6 | .pnp.js
 7 | 
 8 | # testing
 9 | /coverage
10 | 
11 | # production
12 | /build
13 | 
14 | # misc
15 | .DS_Store
16 | .env.local
17 | .env.development.local
18 | .env.test.local
19 | .env.production.local
20 | 
21 | npm-debug.log*
22 | yarn-debug.log*
23 | yarn-error.log*
24 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # useScrollProgress hook
 2 | 
 3 | This helps you how progress that you've scroll on a container.
 4 | 
 5 | A container can be either
 6 | - Window object (full page scroll)
 7 | - Any scrolling element (container scroll)
 8 | 
 9 | Check it out the demos:
10 | 
11 | ### Full page scroll demo
12 | 
13 | ![Full page scroll demo](https://media.giphy.com/media/cnheCcylP3QnDSYPVP/giphy.gif)
14 | 
15 | 
16 | ### Container scroll demo
17 | 
18 | ![Container scroll demo](https://media.giphy.com/media/Tgxtz8CMW04NzEmphv/giphy.gif)
19 | 
20 | 
21 | ## How the useScrollProgress() hook is implemented
22 | 
23 | > Browse the file at /src/hooks/useScrollProgress
24 | 
25 | ## How to use it
26 | 
27 | ```js 
28 | // Full page scroll
29 | const {progress, isAtBottom} = useScrollProgress({
30 |   isFullPageScroll: true,
31 |   onBottomReach: () => console.log('Yay ... bottom reach 🎉'),
32 | })
33 | ```
34 | 
35 | ```js 
36 | // Container scroll
37 | const {progress, isAtBottom} = useScrollProgress({
38 |   isFullPageScroll: false,
39 |   containerRef: DOMElement ,
40 |   onBottomReach: () => console.log('Yay ... bottom reach 🎉'),
41 | })
42 | ```
43 | 
44 | ### Props
45 | 
46 | - `isFullPageScroll`: boolean - Indicate whether using page scroll or container scroll. 
47 | - `containerRef`: object - If isFullPageScroll = false, you need to set this to a DOMElement.
48 | - `onBottomReach`: function - A callback when user scroll to the bottom of the container.
49 | 
50 | ### Output
51 | 
52 | - `progress`: number - A value in range of [0, 100] indicating the progress of scrolling.
53 | - `isAtBottom`: boolean - Let you know if user is at bottom of the container or not.
54 | 
55 | > When isAtBottom = true, I use approximately check only, it means if the scrolling distance is less than or equal to 15px, I'll treat it at bottom. 🙂
56 | 
57 | License: MIT


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "use-scroll-progress",
 3 |   "version": "0.1.0",
 4 |   "private": false,
 5 |   "license": "MIT",
 6 |   "dependencies": {
 7 |     "@testing-library/jest-dom": "^4.2.4",
 8 |     "@testing-library/react": "^9.3.2",
 9 |     "@testing-library/user-event": "^7.1.2",
10 |     "lodash.debounce": "^4.0.8",
11 |     "lodash.throttle": "^4.1.1",
12 |     "react": "^16.13.1",
13 |     "react-dom": "^16.13.1",
14 |     "react-router-dom": "^5.2.0",
15 |     "react-scripts": "3.4.1",
16 |     "reactstrap": "^8.4.1"
17 |   },
18 |   "scripts": {
19 |     "start": "react-scripts start",
20 |     "build": "react-scripts build",
21 |     "test": "react-scripts test",
22 |     "eject": "react-scripts eject"
23 |   },
24 |   "eslintConfig": {
25 |     "extends": "react-app"
26 |   },
27 |   "browserslist": {
28 |     "production": [
29 |       ">0.2%",
30 |       "not dead",
31 |       "not op_mini all"
32 |     ],
33 |     "development": [
34 |       "last 1 chrome version",
35 |       "last 1 firefox version",
36 |       "last 1 safari version"
37 |     ]
38 |   },
39 |   "devDependencies": {
40 |     "node-sass": "^4.14.1"
41 |   }
42 | }
43 | 


--------------------------------------------------------------------------------
/public/favicon.ico:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/paulnguyen-mn/use-scroll-progress/2675feec78da80be148e5379ee9f294ffb8420b5/public/favicon.ico


--------------------------------------------------------------------------------
/public/index.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 | 
 4 | <head>
 5 |   <meta charset="utf-8" />
 6 |   <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
 7 |   <meta name="viewport" content="width=device-width, initial-scale=1" />
 8 |   <meta name="theme-color" content="#000000" />
 9 |   <meta name="description" content="Web site created using create-react-app" />
10 |   <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
11 |   <!--
12 |       manifest.json provides metadata used when your web app is installed on a
13 |       user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
14 |     -->
15 |   <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
16 |   <!--
17 |       Notice the use of %PUBLIC_URL% in the tags above.
18 |       It will be replaced with the URL of the `public` folder during the build.
19 |       Only files inside the `public` folder can be referenced from the HTML.
20 | 
21 |       Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
22 |       work correctly both with client-side routing and a non-root public URL.
23 |       Learn how to configure a non-root public URL by running `npm run build`.
24 |     -->
25 | 
26 |   <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"
27 |     integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
28 | 
29 |   <link href="https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,400;0,700;1,400;1,700&display=swap"
30 |     rel="stylesheet">
31 | 
32 |   <title>React App</title>
33 | </head>
34 | 
35 | <body>
36 |   <noscript>You need to enable JavaScript to run this app.</noscript>
37 |   <div id="root"></div>
38 |   <!--
39 |       This HTML file is a template.
40 |       If you open it directly in the browser, you will see an empty page.
41 | 
42 |       You can add webfonts, meta tags, or analytics to this file.
43 |       The build step will place the bundled scripts into the <body> tag.
44 | 
45 |       To begin the development, run `npm start` or `yarn start`.
46 |       To create a production bundle, use `npm run build` or `yarn build`.
47 |     -->
48 | </body>
49 | 
50 | </html>


--------------------------------------------------------------------------------
/public/logo192.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/paulnguyen-mn/use-scroll-progress/2675feec78da80be148e5379ee9f294ffb8420b5/public/logo192.png


--------------------------------------------------------------------------------
/public/logo512.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/paulnguyen-mn/use-scroll-progress/2675feec78da80be148e5379ee9f294ffb8420b5/public/logo512.png


--------------------------------------------------------------------------------
/public/manifest.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "short_name": "React App",
 3 |   "name": "Create React App Sample",
 4 |   "icons": [
 5 |     {
 6 |       "src": "favicon.ico",
 7 |       "sizes": "64x64 32x32 24x24 16x16",
 8 |       "type": "image/x-icon"
 9 |     },
10 |     {
11 |       "src": "logo192.png",
12 |       "type": "image/png",
13 |       "sizes": "192x192"
14 |     },
15 |     {
16 |       "src": "logo512.png",
17 |       "type": "image/png",
18 |       "sizes": "512x512"
19 |     }
20 |   ],
21 |   "start_url": ".",
22 |   "display": "standalone",
23 |   "theme_color": "#000000",
24 |   "background_color": "#ffffff"
25 | }
26 | 


--------------------------------------------------------------------------------
/public/robots.txt:
--------------------------------------------------------------------------------
1 | # https://www.robotstxt.org/robotstxt.html
2 | User-agent: *
3 | Disallow:
4 | 


--------------------------------------------------------------------------------
/src/App.js:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | import './App.scss';
 3 | import { BrowserRouter, Switch, Route } from 'react-router-dom';
 4 | import FullPageScroll from './pages/FullPageScroll';
 5 | import ContainerScroll from './pages/ContainerScroll';
 6 | import Header from './components/Header';
 7 | 
 8 | function App() {
 9 |   return (
10 |     <div className="demo-app">
11 |       <BrowserRouter>
12 |         <Header />
13 | 
14 |         <Switch>
15 |           <Route exact path="/" component={FullPageScroll} />
16 |           <Route exact path="/container" component={ContainerScroll} />
17 |         </Switch>
18 |       </BrowserRouter>
19 |     </div>
20 |   );
21 | }
22 | 
23 | export default App;
24 | 


--------------------------------------------------------------------------------
/src/App.scss:
--------------------------------------------------------------------------------
1 | .demo-app {
2 | }
3 | 


--------------------------------------------------------------------------------
/src/App.test.js:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | import { render } from '@testing-library/react';
 3 | import App from './App';
 4 | 
 5 | test('renders learn react link', () => {
 6 |   const { getByText } = render(<App />);
 7 |   const linkElement = getByText(/learn react/i);
 8 |   expect(linkElement).toBeInTheDocument();
 9 | });
10 | 


--------------------------------------------------------------------------------
/src/components/Header/Header.scss:
--------------------------------------------------------------------------------
 1 | .nav {
 2 |   display: flex;
 3 |   flex-flow: row nowrap;
 4 | 
 5 |   &__item {
 6 |     flex: 0 0 auto;
 7 |     width: 50%;
 8 |     padding: 0.5rem 1rem;
 9 | 
10 |     color: black;
11 |     background-color: white;
12 | 
13 |     text-align: center;
14 |     font-size: 1.25rem;
15 |     transition: all 0.35s ease-in-out 0s;
16 | 
17 |     &--active {
18 |       color: white;
19 |       background-color: var(--primary);
20 |     }
21 | 
22 |     &:hover {
23 |       color: white;
24 |       text-decoration: none;
25 | 
26 |       &:not(.nav__item--active) {
27 |         color: var(--primary);
28 |       }
29 |     }
30 |   }
31 | }
32 | 


--------------------------------------------------------------------------------
/src/components/Header/index.jsx:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | import { NavLink } from 'react-router-dom';
 3 | import './Header.scss';
 4 | 
 5 | Header.propTypes = {};
 6 | 
 7 | function Header() {
 8 |   return (
 9 |     <nav className="nav">
10 |       <NavLink
11 |         exact
12 |         to="/"
13 |         className="nav__item"
14 |         activeClassName="nav__item--active"
15 |       >
16 |         Full page scroll
17 |       </NavLink>
18 | 
19 |       <NavLink
20 |         to="/container"
21 |         className="nav__item"
22 |         activeClassName="nav__item--active"
23 |       >
24 |         Container scroll
25 |       </NavLink>
26 |     </nav>
27 |   );
28 | }
29 | 
30 | export default Header;


--------------------------------------------------------------------------------
/src/components/ProgressBar/ProgressBar.scss:
--------------------------------------------------------------------------------
1 | .custom-progress {
2 |   border-radius: 0;
3 | }
4 | 


--------------------------------------------------------------------------------
/src/components/ProgressBar/index.jsx:
--------------------------------------------------------------------------------
 1 | import PropTypes from 'prop-types';
 2 | import React from 'react';
 3 | import { Progress } from 'reactstrap';
 4 | import useScrollProgress from '../../hooks/useScrollProgress';
 5 | import './ProgressBar.scss';
 6 | 
 7 | ProgressBar.propTypes = {
 8 |   isFullPageScroll: PropTypes.bool,
 9 |   containerRef: PropTypes.object,
10 |   onBottomReach: PropTypes.func,
11 | };
12 | 
13 | ProgressBar.defaultProps = {
14 |   isFullPageScroll: true,
15 |   containerRef: null,
16 |   onBottomReach: null,
17 | }
18 | 
19 | function ProgressBar(props) {
20 |   const { containerRef, onBottomReach, isFullPageScroll } = props
21 |   const { progress, isAtBottom } = useScrollProgress({
22 |     isFullPageScroll,
23 |     containerRef,
24 |     onBottomReach
25 |   })
26 | 
27 |   return (
28 |     <Progress className="custom-progress" color="success" value={progress}>
29 |       {progress}%
30 |       {isAtBottom ? ` - Yay ... you read it all 🎉` : ''}
31 |     </Progress>
32 |   );
33 | }
34 | 
35 | export default ProgressBar;


--------------------------------------------------------------------------------
/src/hooks/useScrollProgress.js:
--------------------------------------------------------------------------------
 1 | import { useState, useEffect, useRef } from "react";
 2 | import debounce from 'lodash.debounce';
 3 | import throttle from 'lodash.throttle';
 4 | 
 5 | const getWindowScrollHeight = () => {
 6 |   // Refs: https://javascript.info/size-and-scroll-window
 7 |   return Math.max(
 8 |     document.body.scrollHeight, document.documentElement.scrollHeight,
 9 |     document.body.offsetHeight, document.documentElement.offsetHeight,
10 |     document.body.clientHeight, document.documentElement.clientHeight
11 |   );
12 | }
13 | 
14 | const useScrollProgress = (props) => {
15 |   const { isFullPageScroll, containerRef, onBottomReach } = props;
16 |   const [scrollPosition, setScrollPosition] = useState(0);
17 |   const [isAtBottom, setIsAtBottom] = useState(false);
18 | 
19 |   // Why useRef, as the side effect will re-run when updating isAtBottom state
20 |   // Using block variable in the side effect will cause this var is reset every time this side effect re-run
21 |   const lastScrollTopRef = useRef(0);
22 | 
23 |   // Listen to scroll event
24 |   useEffect(() => {
25 |     const scrollContainerRef = isFullPageScroll ? window : containerRef;
26 |     if (!scrollContainerRef) return;
27 | 
28 |     // Handle container scroll
29 |     let lastScrollTop = lastScrollTopRef.current;
30 | 
31 |     const triggerBottomReach = debounce(() => {
32 |       onBottomReach();
33 |       setIsAtBottom(true);
34 |     }, 300)
35 | 
36 |     const calculateScrollDistance = () => {
37 |       const scrollTop = isFullPageScroll ? window.pageYOffset : scrollContainerRef.scrollTop;
38 |       const scrollHeight = isFullPageScroll ? getWindowScrollHeight() : scrollContainerRef.scrollHeight;
39 |       const clientHeight = isFullPageScroll ? document.documentElement.clientHeight : scrollContainerRef.clientHeight
40 |       const totalDocScrollLength = scrollHeight - clientHeight;
41 | 
42 |       const scrollPosition = Math.floor(scrollTop / totalDocScrollLength * 100);
43 |       setScrollPosition(scrollPosition);
44 | 
45 |       // if user is scrolling down to bottom (approximately)
46 |       const isScrollingDown = scrollTop > lastScrollTop;
47 |       const isAlmostReachBottom = (totalDocScrollLength - scrollTop) <= 15;
48 |       if (onBottomReach && isScrollingDown && isAlmostReachBottom) {
49 |         triggerBottomReach();
50 |       }
51 | 
52 |       // Reset isAtBottom state if user are scrolling up and not at bottom
53 |       // In case scrollTop is unchanged, dont treat it as either scrolling down or up
54 |       const isScrollingUp = scrollTop < lastScrollTop;
55 |       if (isScrollingUp && !isAlmostReachBottom && isAtBottom) {
56 |         setIsAtBottom(false);
57 |       }
58 | 
59 |       lastScrollTopRef.current = scrollTop;
60 |     }
61 | 
62 |     const handleScrollChange = () => {
63 |       requestAnimationFrame(calculateScrollDistance);
64 |     }
65 | 
66 |     // Throttle scrolling every 100ms including leading and trailing
67 |     const throttleScroll = throttle(handleScrollChange, 100);
68 |     scrollContainerRef.addEventListener('scroll', throttleScroll);
69 | 
70 |     // Clean up listener when component is unmount
71 |     return () => {
72 |       scrollContainerRef.removeEventListener('scroll', throttleScroll);
73 |     }
74 |   }, [isAtBottom, isFullPageScroll, containerRef, onBottomReach]);
75 | 
76 |   return {
77 |     progress: scrollPosition,
78 |     isAtBottom
79 |   };
80 | }
81 | 
82 | export default useScrollProgress


--------------------------------------------------------------------------------
/src/index.css:
--------------------------------------------------------------------------------
 1 | body {
 2 |   margin: 0;
 3 |   font-family: "Poppins", -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell",
 4 |     "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
 5 |   -webkit-font-smoothing: antialiased;
 6 |   -moz-osx-font-smoothing: grayscale;
 7 | }
 8 | 
 9 | code {
10 |   font-family: source-code-pro, Menlo, Monaco, Consolas, "Courier New", monospace;
11 | }
12 | 


--------------------------------------------------------------------------------
/src/index.js:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | import ReactDOM from 'react-dom';
 3 | import './index.css';
 4 | import App from './App';
 5 | import * as serviceWorker from './serviceWorker';
 6 | 
 7 | ReactDOM.render(
 8 |   <React.StrictMode>
 9 |     <App />
10 |   </React.StrictMode>,
11 |   document.getElementById('root')
12 | );
13 | 
14 | // If you want your app to work offline and load faster, you can change
15 | // unregister() to register() below. Note this comes with some pitfalls.
16 | // Learn more about service workers: https://bit.ly/CRA-PWA
17 | serviceWorker.unregister();
18 | 


--------------------------------------------------------------------------------
/src/logo.svg:
--------------------------------------------------------------------------------
1 | <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3">
2 |     <g fill="#61DAFB">
3 |         <path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/>
4 |         <circle cx="420.9" cy="296.5" r="45.7"/>
5 |         <path d="M520.5 78.1z"/>
6 |     </g>
7 | </svg>
8 | 


--------------------------------------------------------------------------------
/src/pages/ContainerScroll/ContainerScroll.scss:
--------------------------------------------------------------------------------
 1 | .container-scroll {
 2 |   padding-top: 3rem;
 3 | 
 4 |   &__box {
 5 |     height: 70vh;
 6 |     padding: 1rem;
 7 |     border: 1px solid var(--secondary);
 8 |     border-radius: 0 0 0.5rem 0.5rem;
 9 | 
10 |     overflow: auto;
11 | 
12 |     & > p {
13 |       margin: 12rem 0;
14 |     }
15 |   }
16 | }
17 | 


--------------------------------------------------------------------------------
/src/pages/ContainerScroll/index.jsx:
--------------------------------------------------------------------------------
 1 | import React, { useCallback, useState } from 'react';
 2 | import { Container } from 'reactstrap';
 3 | import ProgressBar from '../../components/ProgressBar';
 4 | import './ContainerScroll.scss';
 5 | 
 6 | ContainerScroll.propTypes = {
 7 | 
 8 | };
 9 | 
10 | function ContainerScroll(props) {
11 |   const [scrollingContainerRef, setScrollingContainerRef] = useState(null)
12 | 
13 |   const handleContainerRefMounted = useCallback(node => {
14 |     if (node) {
15 |       setScrollingContainerRef(node);
16 |     }
17 |   }, [])
18 | 
19 |   console.log(scrollingContainerRef)
20 | 
21 |   return (
22 |     <div className="container-scroll">
23 |       <Container>
24 |         <div className="container-scroll__progress">
25 |           <ProgressBar
26 |             isFullPageScroll={false}
27 |             containerRef={scrollingContainerRef}
28 |             onBottomReach={() => console.log('Bottom reach!!! :P')}
29 |           />
30 |         </div>
31 | 
32 | 
33 |         <div ref={handleContainerRefMounted} className="container-scroll__box">
34 |           <p>Scroll down to see changes ...</p>
35 |           <p>Continue to scroll ...</p>
36 |           <p>Keep scrolling ...</p>
37 |           <p>That's right! Just scrolling ... no matter what</p>
38 |           <p>Perfect! It's almost there</p>
39 |           <p>One more step, common!</p>
40 |           <p>Congrats! You're awesome</p>
41 |         </div>
42 |       </Container>
43 |     </div>
44 |   );
45 | }
46 | 
47 | export default ContainerScroll;


--------------------------------------------------------------------------------
/src/pages/FullPageScroll/FullPageScroll.scss:
--------------------------------------------------------------------------------
 1 | .page-scroll {
 2 |   &__progress {
 3 |     position: sticky;
 4 |     top: 0;
 5 |   }
 6 | 
 7 |   &__main {
 8 |     & > p {
 9 |       margin: 40vh 0;
10 |       padding: 0 1rem;
11 |     }
12 |   }
13 | }
14 | 


--------------------------------------------------------------------------------
/src/pages/FullPageScroll/index.jsx:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | import ProgressBar from '../../components/ProgressBar';
 3 | import './FullPageScroll.scss';
 4 | 
 5 | FullPageScroll.propTypes = {};
 6 | 
 7 | function FullPageScroll(props) {
 8 |   return (
 9 |     <div className="page-scroll">
10 |       <div className="page-scroll__progress">
11 |         <ProgressBar
12 |           isFullPageScroll
13 |           onBottomReach={() => console.log('Bottom reach!!! :P')}
14 |         />
15 |       </div>
16 | 
17 |       <div className="page-scroll__main">
18 |         <p>Scroll down to see changes ...</p>
19 |         <p>Continue to scroll ...</p>
20 |         <p>Keep scrolling ...</p>
21 |         <p>That's right! Just scrolling ... no matter what</p>
22 |         <p>Perfect! It's almost there</p>
23 |         <p>One more step, common!</p>
24 |         <p>Congrats! You're awesome</p>
25 |       </div>
26 |     </div>
27 |   );
28 | }
29 | 
30 | export default FullPageScroll;


--------------------------------------------------------------------------------
/src/serviceWorker.js:
--------------------------------------------------------------------------------
  1 | // This optional code is used to register a service worker.
  2 | // register() is not called by default.
  3 | 
  4 | // This lets the app load faster on subsequent visits in production, and gives
  5 | // it offline capabilities. However, it also means that developers (and users)
  6 | // will only see deployed updates on subsequent visits to a page, after all the
  7 | // existing tabs open on the page have been closed, since previously cached
  8 | // resources are updated in the background.
  9 | 
 10 | // To learn more about the benefits of this model and instructions on how to
 11 | // opt-in, read https://bit.ly/CRA-PWA
 12 | 
 13 | const isLocalhost = Boolean(
 14 |   window.location.hostname === 'localhost' ||
 15 |     // [::1] is the IPv6 localhost address.
 16 |     window.location.hostname === '[::1]' ||
 17 |     // 127.0.0.0/8 are considered localhost for IPv4.
 18 |     window.location.hostname.match(
 19 |       /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
 20 |     )
 21 | );
 22 | 
 23 | export function register(config) {
 24 |   if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
 25 |     // The URL constructor is available in all browsers that support SW.
 26 |     const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href);
 27 |     if (publicUrl.origin !== window.location.origin) {
 28 |       // Our service worker won't work if PUBLIC_URL is on a different origin
 29 |       // from what our page is served on. This might happen if a CDN is used to
 30 |       // serve assets; see https://github.com/facebook/create-react-app/issues/2374
 31 |       return;
 32 |     }
 33 | 
 34 |     window.addEventListener('load', () => {
 35 |       const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
 36 | 
 37 |       if (isLocalhost) {
 38 |         // This is running on localhost. Let's check if a service worker still exists or not.
 39 |         checkValidServiceWorker(swUrl, config);
 40 | 
 41 |         // Add some additional logging to localhost, pointing developers to the
 42 |         // service worker/PWA documentation.
 43 |         navigator.serviceWorker.ready.then(() => {
 44 |           console.log(
 45 |             'This web app is being served cache-first by a service ' +
 46 |               'worker. To learn more, visit https://bit.ly/CRA-PWA'
 47 |           );
 48 |         });
 49 |       } else {
 50 |         // Is not localhost. Just register service worker
 51 |         registerValidSW(swUrl, config);
 52 |       }
 53 |     });
 54 |   }
 55 | }
 56 | 
 57 | function registerValidSW(swUrl, config) {
 58 |   navigator.serviceWorker
 59 |     .register(swUrl)
 60 |     .then(registration => {
 61 |       registration.onupdatefound = () => {
 62 |         const installingWorker = registration.installing;
 63 |         if (installingWorker == null) {
 64 |           return;
 65 |         }
 66 |         installingWorker.onstatechange = () => {
 67 |           if (installingWorker.state === 'installed') {
 68 |             if (navigator.serviceWorker.controller) {
 69 |               // At this point, the updated precached content has been fetched,
 70 |               // but the previous service worker will still serve the older
 71 |               // content until all client tabs are closed.
 72 |               console.log(
 73 |                 'New content is available and will be used when all ' +
 74 |                   'tabs for this page are closed. See https://bit.ly/CRA-PWA.'
 75 |               );
 76 | 
 77 |               // Execute callback
 78 |               if (config && config.onUpdate) {
 79 |                 config.onUpdate(registration);
 80 |               }
 81 |             } else {
 82 |               // At this point, everything has been precached.
 83 |               // It's the perfect time to display a
 84 |               // "Content is cached for offline use." message.
 85 |               console.log('Content is cached for offline use.');
 86 | 
 87 |               // Execute callback
 88 |               if (config && config.onSuccess) {
 89 |                 config.onSuccess(registration);
 90 |               }
 91 |             }
 92 |           }
 93 |         };
 94 |       };
 95 |     })
 96 |     .catch(error => {
 97 |       console.error('Error during service worker registration:', error);
 98 |     });
 99 | }
100 | 
101 | function checkValidServiceWorker(swUrl, config) {
102 |   // Check if the service worker can be found. If it can't reload the page.
103 |   fetch(swUrl, {
104 |     headers: { 'Service-Worker': 'script' },
105 |   })
106 |     .then(response => {
107 |       // Ensure service worker exists, and that we really are getting a JS file.
108 |       const contentType = response.headers.get('content-type');
109 |       if (
110 |         response.status === 404 ||
111 |         (contentType != null && contentType.indexOf('javascript') === -1)
112 |       ) {
113 |         // No service worker found. Probably a different app. Reload the page.
114 |         navigator.serviceWorker.ready.then(registration => {
115 |           registration.unregister().then(() => {
116 |             window.location.reload();
117 |           });
118 |         });
119 |       } else {
120 |         // Service worker found. Proceed as normal.
121 |         registerValidSW(swUrl, config);
122 |       }
123 |     })
124 |     .catch(() => {
125 |       console.log(
126 |         'No internet connection found. App is running in offline mode.'
127 |       );
128 |     });
129 | }
130 | 
131 | export function unregister() {
132 |   if ('serviceWorker' in navigator) {
133 |     navigator.serviceWorker.ready
134 |       .then(registration => {
135 |         registration.unregister();
136 |       })
137 |       .catch(error => {
138 |         console.error(error.message);
139 |       });
140 |   }
141 | }
142 | 


--------------------------------------------------------------------------------
/src/setupTests.js:
--------------------------------------------------------------------------------
1 | // jest-dom adds custom jest matchers for asserting on DOM nodes.
2 | // allows you to do things like:
3 | // expect(element).toHaveTextContent(/react/i)
4 | // learn more: https://github.com/testing-library/jest-dom
5 | import '@testing-library/jest-dom/extend-expect';
6 | 


--------------------------------------------------------------------------------