diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml new file mode 100644 index 0000000..6be88d3 --- /dev/null +++ b/.github/workflows/release.yml @@ -0,0 +1,68 @@ +name: release +on: [push, pull_request] +concurrency: + group: ${{ github.workflow }}-${{ github.ref }} + cancel-in-progress: true + +jobs: + test: + name: ๐Ÿงช Test + runs-on: ubuntu-latest + steps: + - name: โฌ‡๏ธ Checkout repo + uses: actions/checkout@v4 + + - name: โŽ” Setup node + uses: actions/setup-node@v4 + with: + node-version: 20 + + - name: ๐Ÿ“ฅ Download deps + uses: bahmutov/npm-install@v1 + with: + useLockFile: false + + - name: ๐Ÿงช Test + run: npm run test + + release: + name: ๐Ÿš€ Release + needs: [test] + runs-on: ubuntu-latest + if: + ${{ github.repository == 'epicweb-dev/restore-scroll' && + contains('refs/heads/main,refs/heads/beta,refs/heads/next,refs/heads/alpha', + github.ref) && github.event_name == 'push' }} + steps: + - name: โฌ‡๏ธ Checkout repo + uses: actions/checkout@v4 + + - name: โŽ” Setup node + uses: actions/setup-node@v4 + with: + node-version: 20 + + - name: ๐Ÿ“ฅ Download deps + uses: bahmutov/npm-install@v1 + with: + useLockFile: false + + - name: ๐Ÿ“ฆ Run Build + run: npm run build + + - name: ๐Ÿš€ Release + uses: cycjimmy/semantic-release-action@v4 + with: + semantic_version: 17 + branches: | + [ + '+([0-9])?(.{+([0-9]),x}).x', + 'main', + 'next', + 'next-major', + {name: 'beta', prerelease: true}, + {name: 'alpha', prerelease: true} + ] + env: + GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} + NPM_TOKEN: ${{ secrets.NPM_TOKEN }} diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..eac38e9 --- /dev/null +++ b/.gitignore @@ -0,0 +1,8 @@ +dist +node_modules +tsconfig.tsbuildinfo +coverage +/test-results/ +/playwright-report/ +/blob-report/ +/playwright/.cache/ diff --git a/README.md b/README.md new file mode 100644 index 0000000..23632cc --- /dev/null +++ b/README.md @@ -0,0 +1,98 @@ +
+

๐ŸŒ€ @epic-web/restore-scroll

+ + Restore scroll position of elements on page navigation + +

+ The `` isn't the only thing that scrolls. When the user scrolls a list, then navigates back and forth, you may want to keep their scroll position where it was when they left. This library makes that easy. +

+
+ +``` +npm install @epic-web/restore-scroll +``` + +
+ + + +
+ +
+ + +[![Build Status][build-badge]][build] +[![MIT License][license-badge]][license] +[![Code of Conduct][coc-badge]][coc] + + +## The Problem + +When a user navigates to a new page, the browser will scroll the page to the +position it was at when the user left the page. This is a great feature, but +it's not perfect. The browser only scrolls the `` element. If the user +scrolls a list, then navigates back and forth, the browser will scroll the page +to the top, but the list will still be scrolled to the position it was at when +the user left the page. + +## The Solution + +This library provides a way to restore the scroll position of any element on the +page you choose. It does this by storing the scroll position of the element in +session storage and then restoring it when the user navigates back to the page +(very similar to how Remix handles scroll restoration for the ``). + +This depends on Remix's `useBeforeUnload`, `useNavigation`, and `useLocation` +hooks. There's probably an easy way we could make this support React Router in +general. PRs welcome! + +## Usage + +```tsx +import { ElementScrollRestoration } from '@epic-web/restore-scroll' + +// ... Stick this in your root component somewhere: +return ( + + + {/* ... */} + + {/* ... */} + + +) +``` + +Then, for any element for which you wish to restore scroll position, simply add +the `data-restore-scroll="true"` attribute: + +```tsx + +``` + +And that's it! Now when the user navigates away from the page and then back to +it, the list will be scrolled to the position it was at when the user left the +page. + +## License + +MIT + + +[build-badge]: https://img.shields.io/github/actions/workflow/status/epicweb-dev/restore-scroll/release.yml?branch=main&logo=github&style=flat-square +[build]: https://github.com/epicweb-dev/restore-scroll/actions?query=workflow%3Arelease +[license-badge]: https://img.shields.io/badge/license-MIT%20License-blue.svg?style=flat-square +[license]: https://github.com/epicweb-dev/restore-scroll/blob/main/LICENSE +[coc-badge]: https://img.shields.io/badge/code%20of-conduct-ff69b4.svg?style=flat-square +[coc]: https://kentcdodds.com/conduct + diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..4697221 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,619 @@ +{ + "name": "@epic-web/restore-scroll", + "version": "0.0.0-semantically-released", + "lockfileVersion": 3, + "requires": true, + 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+ "tsc": "bin/tsc", + "tsserver": "bin/tsserver" + }, + "engines": { + "node": ">=14.17" + } + } + } +} diff --git a/package.json b/package.json new file mode 100644 index 0000000..e66e2ad --- /dev/null +++ b/package.json @@ -0,0 +1,64 @@ +{ + "name": "@epic-web/restore-scroll", + "version": "0.0.0-semantically-released", + "description": "Restore scroll position of elements on page navigation", + "publishConfig": { + "access": "public" + }, + "repository": { + "type": "git", + "url": "https://github.com/epicweb-dev/restore-scroll" + }, + "bugs": { + "url": "https://github.com/epicweb-dev/restore-scroll/issues" + }, + "homepage": "https://github.com/epicweb-dev/restore-scroll#readme", + "type": "module", + "main": "./dist/index.js", + "module": "./dist/index.js", + "exports": { + ".": { + "types": "./dist/index.d.ts", + "default": "./dist/index.js" + } + }, + "files": [ + "dist" + ], + "scripts": { + "build": "tsc", + "format": "prettier --write ." + }, + "peerDependencies": { + "react": ">=18.0.0", + "react-router-dom": ">=6.4.0" + }, + "devDependencies": { + "@types/react": "^18.2.39", + "prettier": "^3.1.0", + "react": "^18.2.0", + "react-dom": "^18.2.0", + "react-router-dom": "^6.20.0", + "tsx": "^4.3.0", + "typescript": "^5.3.2" + }, + "prettier": { + "semi": false, + "useTabs": true, + "singleQuote": true, + "proseWrap": "always", + "overrides": [ + { + "files": [ + "**/*.json" + ], + "options": { + "useTabs": false + } + } + ] + }, + "keywords": [], + "author": "Kent C. Dodds (https://kentcdodds.com/)", + "license": "MIT" +} diff --git a/src/index.tsx b/src/index.tsx new file mode 100644 index 0000000..e1ce255 --- /dev/null +++ b/src/index.tsx @@ -0,0 +1,93 @@ +import * as React from 'react' +import { useCallback, useEffect } from 'react' +import { useBeforeUnload, useLocation, useNavigation } from 'react-router-dom' + +export function ElementScrollRestoration({ + elementQuery, + ...props +}: { elementQuery: string } & React.HTMLProps) { + const STORAGE_KEY = `position:${elementQuery}` + const navigation = useNavigation() + const location = useLocation() + + const updatePositions = useCallback(() => { + const element = document.querySelector(elementQuery) + if (!element) return + let positions = {} + try { + const rawPositions = JSON.parse( + sessionStorage.getItem(STORAGE_KEY) || '{}', + ) + if (typeof rawPositions === 'object' && rawPositions !== null) { + positions = rawPositions + } + } catch (error) { + console.warn(`Error parsing scroll positions from sessionStorage:`, error) + } + const newPositions = { + ...positions, + [location.key]: element.scrollTop, + } + sessionStorage.setItem(STORAGE_KEY, JSON.stringify(newPositions)) + }, [STORAGE_KEY, elementQuery, location.key]) + + useEffect(() => { + if (navigation.state === 'idle') { + const element = document.querySelector(elementQuery) + if (!element) return + try { + const positions = JSON.parse( + sessionStorage.getItem(STORAGE_KEY) || '{}', + ) as any + const storedY = positions[window.history.state.key] + if (typeof storedY === 'number') { + element.scrollTop = storedY + } + } catch (error: unknown) { + console.error(error) + sessionStorage.removeItem(STORAGE_KEY) + } + } else { + updatePositions() + } + }, [STORAGE_KEY, elementQuery, navigation.state, updatePositions]) + + useBeforeUnload(() => { + updatePositions() + }) + + function restoreScroll(storageKey: string, elementQuery: string) { + const element = document.querySelector(elementQuery) + if (!element) { + console.warn(`Element not found: ${elementQuery}. Cannot restore scroll.`) + return + } + if (!window.history.state || !window.history.state.key) { + const key = Math.random().toString(32).slice(2) + window.history.replaceState({ key }, '') + } + try { + const positions = JSON.parse( + sessionStorage.getItem(storageKey) || '{}', + ) as any + const storedY = positions[window.history.state.key] + if (typeof storedY === 'number') { + element.scrollTop = storedY + } + } catch (error: unknown) { + console.error(error) + sessionStorage.removeItem(storageKey) + } + } + return ( +