Simeon Pursiainen
82 lines
2.4 KiB
TypeScript
82 lines
2.4 KiB
TypeScript
import React, { useState, useEffect, useRef } from "react";
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import throttle from "lodash/throttle";
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import styled from "styled-components";
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import colors from "@theme/colors";
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import breakpoints from "@theme/breakpoints";
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import Navigation from "./Navigation";
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import NavigationMobile from "./NavigationMobile";
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import HeaderLogo from "./HeaderLogo";
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import BlockScroll from "./BlockScroll";
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const StyledHeader = styled.header`
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display: flex;
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flex-flow: row nowrap;
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@media screen and (max-width: ${breakpoints.mobile}) {
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flex-flow: column nowrap;
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}
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`;
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const Sticky = styled.div<{ $isHidden?: boolean; $mobileMenuOpen?: boolean }>`
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position: sticky;
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top: 0;
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z-index: 10;
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padding: 0 1rem;
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background-color: ${colors.darkBlue};
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transition: all 200ms ease-out;
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height: ${(p) => (p.$mobileMenuOpen ? "100vh" : "unset")};
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/* tape to allow mobile dropdown menu scrolling */
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@media screen and (max-width: ${breakpoints.mobile}) {
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overflow-y: ${(p) => (p.$mobileMenuOpen ? "auto" : "visible")};
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overflow-x: hidden;
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-webkit-overflow-scrolling: touch; /* apparently some ios optimization for smoother scrolin' */
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}
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${(p) => (p.$isHidden ? (`
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transition: all 200ms ease-in;
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transform: translateY(-100%);
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`) : null)}
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`;
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const PREVENT_IS_HIDDEN_Y = 150;
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const Header: React.FC = () => {
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const [mobileMenuOpen, setMobileMenuOpen] = useState(false);
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const [isHidden, setHidden] = useState(false);
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const yCoord = useRef(0);
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const handleMobileMenuClick = () => setMobileMenuOpen(!mobileMenuOpen);
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useEffect(() => {
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const handleScroll = () => {
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const newCoord = window.pageYOffset;
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if (!mobileMenuOpen && newCoord > yCoord.current && newCoord > PREVENT_IS_HIDDEN_Y) {
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setHidden(true);
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} else {
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setHidden(false);
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}
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yCoord.current = newCoord;
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};
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const func = throttle(handleScroll, 200);
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// Prevents hide when clicking mobileMenuOpen
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handleScroll();
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window.addEventListener("scroll", func);
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return () => window.removeEventListener("scroll", func);
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}, [mobileMenuOpen]);
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return (
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<Sticky $isHidden={isHidden} $mobileMenuOpen={mobileMenuOpen}>
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{ mobileMenuOpen && (
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<BlockScroll />
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)}
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<StyledHeader>
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<HeaderLogo />
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<Navigation onMobileMenuOpen={handleMobileMenuClick} />
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</StyledHeader>
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<NavigationMobile mobileMenuOpen={mobileMenuOpen} />
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</Sticky>
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);
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};
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export default Header;
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