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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| import React from 'react'; | ||
|
|
||
| type IMiniNavBarHeader = { | ||
| id: string; | ||
| children: React.ReactNode; | ||
| }; | ||
| export default function MiniNavBarHeader({ id, children }: IMiniNavBarHeader) { | ||
| return ( | ||
| <h4 id={id} className={'mt-4'} mini-nav-bar-header=""> | ||
| {children} | ||
| </h4> | ||
| ); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,218 @@ | ||
| import React, { useEffect, useRef, useState, useCallback } from 'react'; | ||
| import { Link, useLocation } from 'react-router-dom'; | ||
| import { Row, Col } from 'react-bootstrap'; | ||
|
|
||
| function getNavBarSectionElements() { | ||
| return document.querySelectorAll('[mini-nav-bar-header]'); | ||
| } | ||
|
|
||
| function useScrollToHash({ stickyHeight }: { stickyHeight: number }) { | ||
| const location = useLocation(); | ||
|
|
||
| useEffect(() => { | ||
| const hash = location.hash; | ||
| if (hash) { | ||
| let element: Element | null; | ||
| try { | ||
| element = document.querySelector(hash); | ||
| } catch { | ||
| element = null; | ||
| } | ||
| if (element) { | ||
| const targetPosition = | ||
| element.getBoundingClientRect().top + window.scrollY; | ||
| window.scrollTo({ | ||
| behavior: 'smooth', | ||
| top: targetPosition - stickyHeight, | ||
| }); | ||
| } | ||
| } | ||
| }, [location]); | ||
| } | ||
|
|
||
| type IStickyMiniNavBar = { | ||
| title: string; | ||
| linkUnderlineColor: string; | ||
| stickyBackgroundColor: string; | ||
| }; | ||
|
|
||
| export default function StickyMiniNavBar({ | ||
| title, | ||
| linkUnderlineColor, | ||
| stickyBackgroundColor, | ||
| }: IStickyMiniNavBar) { | ||
| const [headerHeight, setHeaderHeight] = useState(0); | ||
| const [isSticky, setIsSticky] = useState(false); | ||
| const [sections, setSections] = useState< | ||
| { id: string; label: string | null }[] | ||
| >([]); | ||
| const [passedElements, setPassedElements] = useState<Record<string, boolean>>( | ||
| {} | ||
| ); | ||
| const stickyDivRef = useRef<HTMLDivElement | null>(null); | ||
| useScrollToHash({ | ||
| stickyHeight: | ||
| headerHeight + | ||
| (stickyDivRef.current?.getBoundingClientRect().height ?? 0), | ||
| }); | ||
|
|
||
| useEffect(() => { | ||
| const newSections: typeof sections = []; | ||
| const miniNavBarSections = getNavBarSectionElements(); | ||
| miniNavBarSections.forEach(ele => { | ||
| newSections.push({ | ||
| id: ele.id, | ||
| label: ele.textContent, | ||
| }); | ||
| }); | ||
| setSections(newSections); | ||
|
|
||
| const headerElement = document.querySelector('header'); | ||
|
|
||
| const updateHeaderHeight = () => { | ||
| if (headerElement) { | ||
| setHeaderHeight(headerElement.getBoundingClientRect().height); | ||
| } | ||
| }; | ||
|
|
||
| updateHeaderHeight(); | ||
|
|
||
| const resizeObserver = new ResizeObserver(() => { | ||
| updateHeaderHeight(); | ||
| }); | ||
|
|
||
| if (headerElement) { | ||
| resizeObserver.observe(headerElement); | ||
| } | ||
|
|
||
| return () => { | ||
| if (headerElement) { | ||
| resizeObserver.unobserve(headerElement); | ||
| } | ||
| }; | ||
| }, []); | ||
|
|
||
| useEffect(() => { | ||
| const miniNavBarSections = getNavBarSectionElements(); | ||
| const intersectionObserver = new IntersectionObserver(entries => { | ||
| const newPassedElements: typeof passedElements = {}; | ||
| entries.forEach(entry => { | ||
| const targetId = entry.target.getAttribute('id') ?? ''; | ||
| const hasId = sections.find(x => x.id === targetId); | ||
| newPassedElements[targetId] = | ||
| hasId !== undefined && | ||
| (entry.isIntersecting || entry.boundingClientRect.y < 0); | ||
| }); | ||
| setPassedElements(x => { | ||
| return { | ||
| ...x, | ||
| ...newPassedElements, | ||
| }; | ||
| }); | ||
| }); | ||
| miniNavBarSections.forEach(x => intersectionObserver.observe(x)); | ||
| return () => { | ||
| miniNavBarSections.forEach(x => intersectionObserver.unobserve(x)); | ||
| }; | ||
| }, [sections]); | ||
|
|
||
| const handleScroll = () => { | ||
| if (stickyDivRef.current) { | ||
| const stickyOffset = stickyDivRef.current.getBoundingClientRect().top; | ||
| setIsSticky(stickyOffset <= headerHeight); | ||
| } | ||
| }; | ||
|
|
||
| useEffect(() => { | ||
| window.addEventListener('scroll', handleScroll); | ||
|
|
||
| return () => { | ||
| window.removeEventListener('scroll', handleScroll); | ||
| }; | ||
| }, [headerHeight]); | ||
|
|
||
| let currentSectionId = sections[0]?.id; | ||
| for (let i = sections.length - 1; i >= 0; i--) { | ||
| const id = sections[i].id; | ||
| if (passedElements[id]) { | ||
| currentSectionId = id; | ||
| break; | ||
| } | ||
| } | ||
|
|
||
| return ( | ||
| <Row | ||
| className="justify-content-center" | ||
| style={{ | ||
| position: 'sticky', | ||
| top: headerHeight, | ||
| zIndex: 100, | ||
| backgroundColor: isSticky ? stickyBackgroundColor : undefined, | ||
| }} | ||
| > | ||
| <Col md={11}> | ||
| <nav | ||
| ref={stickyDivRef} | ||
| className="d-flex flex-row" | ||
| style={{ | ||
| gap: '40px', | ||
| }} | ||
| > | ||
| {isSticky && ( | ||
| <Link | ||
| className="h6 font-weight-bold" | ||
| // # is removed from link so we have to use onclick to scroll to the top | ||
| to="#" | ||
| style={{ | ||
| color: '#000000', | ||
| fontFamily: 'Gotham Bold', | ||
| padding: '7px 0px', | ||
| }} | ||
| onClick={e => { | ||
| e.preventDefault(); | ||
| window.scrollTo({ | ||
| top: 0, | ||
| behavior: 'smooth', | ||
| }); | ||
| }} | ||
| > | ||
| {title} | ||
| </Link> | ||
| )} | ||
| <div | ||
| className="d-flex flex-row" | ||
| style={{ | ||
| gap: '10px', | ||
| }} | ||
| > | ||
| {sections.map(({ id, label }) => { | ||
| const isInSection = currentSectionId === id; | ||
| return ( | ||
| <Link | ||
| key={id} | ||
| to={`#${id}`} | ||
| className={`h6 ${ | ||
| isInSection ? 'font-weight-bold' : 'font-weight-normal' | ||
| }`} | ||
| style={{ | ||
| color: '#000000', | ||
| borderColor: isInSection | ||
| ? linkUnderlineColor | ||
| : 'transparent', | ||
| borderBottomStyle: 'solid', | ||
| borderBottomWidth: '4px', | ||
| //fontFamily: isInSection ? 'Gotham Book' : 'Gotham Book', | ||
| fontFamily: isInSection ? 'Gotham Bold' : 'Gotham Book', | ||
| padding: '7px 0px', | ||
| }} | ||
| > | ||
| {label} | ||
| </Link> | ||
| ); | ||
| })} | ||
| </div> | ||
| </nav> | ||
| </Col> | ||
| </Row> | ||
| ); | ||
| } |
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