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Merge pull request #312 from SMAKSS/develop
[Release] Allow specifying a custom scrollable element
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| import tsParser from '@typescript-eslint/parser'; | ||
| import tsPlugin from '@typescript-eslint/eslint-plugin'; | ||
| import reactHooksPlugin from 'eslint-plugin-react-hooks'; | ||
|
|
||
| export default [ | ||
| { | ||
| files: ['**/*.{js,jsx,ts,tsx}'], | ||
| ignores: [ | ||
| 'dist/**', | ||
| 'prettier.config.cjs', | ||
| 'lint-staged.config.cjs', | ||
| 'commitlint.config.cjs' | ||
| ], | ||
| languageOptions: { | ||
| parser: tsParser, | ||
| parserOptions: { | ||
| ecmaFeatures: { | ||
| jsx: true, | ||
| modules: true | ||
| }, | ||
| ecmaVersion: 'latest', | ||
| sourceType: 'module', | ||
| tsconfigRootDir: '.', | ||
| project: ['./tsconfig.json'] | ||
| } | ||
| }, | ||
| plugins: { | ||
| '@typescript-eslint': tsPlugin, | ||
| 'react-hooks': reactHooksPlugin | ||
| }, | ||
| rules: { | ||
| 'linebreak-style': 'off', | ||
| '@typescript-eslint/no-explicit-any': 'warn', | ||
| '@typescript-eslint/ban-types': [ | ||
| 'error', | ||
| { | ||
| extendDefaults: true, | ||
| types: { | ||
| '{}': false | ||
| } | ||
| } | ||
| ], | ||
| 'react-hooks/rules-of-hooks': 'error', | ||
| 'react-hooks/exhaustive-deps': 'warn', | ||
| 'object-shorthand': 'error', | ||
| 'no-console': ['warn', { allow: ['warn', 'error', 'info'] }] | ||
| } | ||
| } | ||
| ]; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,200 +1,4 @@ | ||
| import { useState, useEffect, useCallback, useRef } from 'react'; | ||
|
|
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| /** Enumeration for axis values */ | ||
| export enum Axis { | ||
| /** | ||
| * The x-axis represents the horizontal direction. | ||
| */ | ||
| X = 'x', | ||
| /** | ||
| * The y-axis represents the vertical direction. | ||
| */ | ||
| Y = 'y' | ||
| } | ||
|
|
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| /** Enumeration for direction values */ | ||
| export enum Direction { | ||
| /** | ||
| * The up direction represents the scroll direction moving towards the top. | ||
| */ | ||
| Up = 'up', | ||
| /** | ||
| * The down direction represents the scroll direction moving towards the bottom. | ||
| */ | ||
| Down = 'down', | ||
| /** | ||
| * The left direction represents the scroll direction moving towards the left. | ||
| */ | ||
| Left = 'left', | ||
| /** | ||
| * The right direction represents the scroll direction moving towards the right. | ||
| */ | ||
| Right = 'right', | ||
| /** | ||
| * The still direction represents the scroll direction when the user is not scrolling. | ||
| */ | ||
| Still = 'still' | ||
| } | ||
|
|
||
| type ScrollPosition = { | ||
| /** | ||
| * The top position represents the distance from the top edge of the page. | ||
| */ | ||
| top: number; | ||
| /** | ||
| * The bottom position represents the distance from the bottom edge of the page. | ||
| */ | ||
| bottom: number; | ||
| /** | ||
| * The left position represents the distance from the left edge of the page. | ||
| */ | ||
| left: number; | ||
| /** | ||
| * The right position represents the distance from the right edge of the page. | ||
| */ | ||
| right: number; | ||
| }; | ||
|
|
||
| /** Type declaration for the returned scroll information */ | ||
| type ScrollInfo = { | ||
| /** | ||
| * The scrollDir represents the current scroll direction. | ||
| */ | ||
| scrollDir: Direction; | ||
| /** | ||
| * The scrollPosition represents the current scroll position. | ||
| */ | ||
| scrollPosition: ScrollPosition; | ||
| }; | ||
|
|
||
| /** Type declaration for scroll properties */ | ||
| type ScrollProps = { | ||
| /** | ||
| * The thr represents the threshold value for scroll detection. | ||
| */ | ||
| thr?: number; | ||
| /** | ||
| * The axis represents the scroll axis (x or y). | ||
| */ | ||
| axis?: Axis; | ||
| /** | ||
| * The scrollUp represents the scroll direction when moving up. | ||
| */ | ||
| scrollUp?: Direction; | ||
| /** | ||
| * The scrollDown represents the scroll direction when moving down. | ||
| */ | ||
| scrollDown?: Direction; | ||
| /** | ||
| * The still represents the scroll direction when the user is not scrolling. | ||
| */ | ||
| still?: Direction; | ||
| }; | ||
|
|
||
| /** | ||
| * useDetectScroll hook. | ||
| * | ||
| * This hook provides a mechanism to detect the scroll direction and position. | ||
| * It will return the scroll direction as a string (up, down, left, right, or still) based on user scrolling, | ||
| * as well as the scroll position from the top, bottom, left, and right edges of the page. | ||
| * | ||
| * @example | ||
| * | ||
| * import useDetectScroll, { Axis, Direction } from '@smakss/react-scroll-direction'; | ||
| * | ||
| * function App() { | ||
| * const { scrollDir, scrollPosition } = useDetectScroll({ | ||
| * thr: 100, | ||
| * axis: Axis.Y, | ||
| * scrollUp: Direction.Up, | ||
| * scrollDown: Direction.Down, | ||
| * still: Direction.Still | ||
| * }); | ||
| * | ||
| * return ( | ||
| * <div> | ||
| * <p>Current scroll direction: {scrollDir}</p> | ||
| * <p>Scroll position - Top: {scrollPosition.top}, Bottom: {scrollPosition.bottom}, | ||
| * Left: {scrollPosition.left}, Right: {scrollPosition.right}</p> | ||
| * </div> | ||
| * ); | ||
| * } | ||
| * | ||
| * @param {ScrollProps} props - The properties related to scrolling. | ||
| * @returns {ScrollInfo} - The current direction and position of scrolling. | ||
| */ | ||
| function useDetectScroll(props: ScrollProps = {}): ScrollInfo { | ||
| const { | ||
| thr = 0, | ||
| axis = Axis.Y, | ||
| scrollUp = axis === Axis.Y ? Direction.Up : Direction.Left, | ||
| scrollDown = axis === Axis.Y ? Direction.Down : Direction.Right, | ||
| still = Direction.Still | ||
| } = props; | ||
|
|
||
| const [scrollDir, setScrollDir] = useState<Direction>(still); | ||
| const [scrollPosition, setScrollPosition] = useState<ScrollPosition>({ | ||
| top: 0, | ||
| bottom: 0, | ||
| left: 0, | ||
| right: 0 | ||
| }); | ||
|
|
||
| const threshold = Math.max(0, thr); | ||
| const ticking = useRef(false); | ||
| const lastScroll = useRef(0); | ||
|
|
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| /** Function to update scroll direction */ | ||
| const updateScrollDir = useCallback(() => { | ||
| const scroll = axis === Axis.Y ? window.scrollY : window.scrollX; | ||
|
|
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| if (Math.abs(scroll - lastScroll.current) >= threshold) { | ||
| setScrollDir(scroll > lastScroll.current ? scrollDown : scrollUp); | ||
| lastScroll.current = Math.max(0, scroll); | ||
| } | ||
| ticking.current = false; | ||
| }, [axis, threshold, scrollDown, scrollUp]); | ||
|
|
||
| useEffect(() => { | ||
| /** Function to update scroll position */ | ||
| const updateScrollPosition = () => { | ||
| const top = window.scrollY; | ||
| const left = window.scrollX; | ||
| const bottom = | ||
| document.documentElement.scrollHeight - window.innerHeight - top; | ||
| const right = | ||
| document.documentElement.scrollWidth - window.innerWidth - left; | ||
|
|
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| setScrollPosition({ top, bottom, left, right }); | ||
| }; | ||
|
|
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| /** Call the update function when the component mounts */ | ||
| updateScrollPosition(); | ||
|
|
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| window.addEventListener('scroll', updateScrollPosition); | ||
|
|
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| return () => { | ||
| window.removeEventListener('scroll', updateScrollPosition); | ||
| }; | ||
| }, []); | ||
|
|
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| useEffect(() => { | ||
| lastScroll.current = axis === Axis.Y ? window.scrollY : window.scrollX; | ||
|
|
||
| /** Function to handle onScroll event */ | ||
| const onScroll = () => { | ||
| if (!ticking.current) { | ||
| window.requestAnimationFrame(updateScrollDir); | ||
| ticking.current = true; | ||
| } | ||
| }; | ||
|
|
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| window.addEventListener('scroll', onScroll); | ||
|
|
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| return () => window.removeEventListener('scroll', onScroll); | ||
| }, [axis, updateScrollDir]); | ||
|
|
||
| return { scrollDir, scrollPosition }; | ||
| } | ||
| import useDetectScroll from './useDetectScroll'; | ||
|
|
||
| export default useDetectScroll; | ||
| export { Axis, Direction } from './types'; |
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