@kiwicom/orbit-components/es/NavigationBar/index.js

Orbit-components is a React component library which provides developers with the easiest possible way of building Kiwi.com’s products.

import React, { useState, useEffect, useCallback } from "react";
import styled from "styled-components";
import defaultTheme from "../defaultTheme";
import MenuHamburger from "../icons/MenuHamburger";
import ButtonLink from "../ButtonLink";
import useStateWithCallback from "../hooks/useStateWithCallback";
import useTranslate from "../hooks/useTranslate";
const NAVBAR_HEIGHT = 64;
const StyledNavigationBarContent = styled.div.withConfig({
  displayName: "NavigationBar__StyledNavigationBarContent",
  componentId: "sc-17lan40-0"
})(["display:block;width:100%;margin-right:", ";"], ({
  theme
}) => theme.orbit.spaceXXSmall);
StyledNavigationBarContent.defaultProps = {
  theme: defaultTheme
};
const StyledNavigationBar = styled.nav.withConfig({
  displayName: "NavigationBar__StyledNavigationBar",
  componentId: "sc-17lan40-1"
})(["position:fixed;top:0;left:0;right:0;height:", "px;width:100%;display:flex;align-items:center;background:", ";box-shadow:", ";padding:", ";box-sizing:border-box;z-index:700;transition:transform ", " ease-in-out;transform:translate3d(0,", ",0);"], NAVBAR_HEIGHT, ({
  theme
}) => theme.orbit.paletteWhite, ({
  theme
}) => theme.orbit.boxShadowFixed, ({
  theme
}) => theme.orbit.spaceSmall, ({
  theme
}) => theme.orbit.durationNormal, ({
  shown
}) => shown ? "0" : `-${NAVBAR_HEIGHT}px`);
StyledNavigationBar.defaultProps = {
  theme: defaultTheme
};

const NavigationBar = ({
  onMenuOpen,
  children,
  dataTest,
  onShow,
  onHide
}) => {
  const translate = useTranslate();
  const resolveCallback = useCallback(state => {
    if (onHide && !state) onHide();
    if (onShow && state) onShow();
  }, [onHide, onShow]);
  const [shown, setShown] = useStateWithCallback(true, resolveCallback);
  const [prevScrollPosition, setPrevScrollPosition] = useState(0);
  const handleNavigationBarPosition = useCallback(() => {
    const currentScrollPosition = window.scrollY || window.pageYOffset || document.documentElement && document.documentElement.scrollTop;

    if (prevScrollPosition < currentScrollPosition && currentScrollPosition > NAVBAR_HEIGHT) {
      setShown(false);
    } else {
      setShown(true);
    }

    setPrevScrollPosition(currentScrollPosition);
  }, [prevScrollPosition, setShown]);
  useEffect(() => {
    window.addEventListener("scroll", handleNavigationBarPosition);
    return () => {
      window.removeEventListener("scroll", handleNavigationBarPosition);
    };
  });
  return React.createElement(StyledNavigationBar, {
    "data-test": dataTest,
    shown: shown
  }, React.createElement(StyledNavigationBarContent, null, children), onMenuOpen && React.createElement(ButtonLink, {
    type: "secondary",
    onClick: onMenuOpen,
    iconLeft: React.createElement(MenuHamburger, null),
    transparent: true,
    title: translate("navigationbar_open_menu")
  }));
};

export default NavigationBar;