From 522a1cdbaf0f478fb23a9f770b9caf732ea13803 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Tue, 29 Oct 2019 17:11:07 +0300
Subject: Hide header on scroll (mobile only)

---
 vnext/src/ui/Header.js | 134 ++++++++++++++++++++++++-------------------------
 1 file changed, 66 insertions(+), 68 deletions(-)

(limited to 'vnext/src/ui/Header.js')

diff --git a/vnext/src/ui/Header.js b/vnext/src/ui/Header.js
index 2d042bfe..a7663dd3 100644
--- a/vnext/src/ui/Header.js
+++ b/vnext/src/ui/Header.js
@@ -1,73 +1,71 @@
-import React, { useEffect, useCallback, useRef } from 'react';
-import ReactDOM from 'react-dom';
-import PropTypes from 'prop-types';
+import React, { memo } from 'react';
+import { Link, withRouter } from 'react-router-dom';
 
-const elClassHidden = 'header--hidden';
+import Icon from './Icon';
+import { UserLink } from './UserInfo';
+import SearchBox from './SearchBox';
 
-const header = document.getElementById('header');
+function Header({ visitor, search, className }) {
+    return (
+        <div id="header" className={className}>
+            <div id="header_wrapper">
+                {
+                    visitor.uid < 0 ?
+                        <>
+                            <div id="logo"><a href="/" /></div>
+                            <nav id="global">
+                                <a href="/">Loading...</a>
+                            </nav>
+                        </>
+                        : visitor.uid > 0 ?
+                            <UserLink user={visitor} />
+                            : <div id="logo">
+                                <Link to="/">Juick</Link>
+                            </div>
+                }
+                {
+                    visitor.uid >= 0 &&
+                    <>
+                        <div id="search" className="desktop">
+                            <SearchBox pathname="/discover" onSearch={search} />
+                        </div>
+                        <nav id="global">
+                            {visitor.uid > 0 ?
+                                <Link to={{ pathname: '/' }}>
+                                    <Icon name="ei-bell" size="s" /><span className="desktop">Discuss</span>
+                                    {
+                                        visitor.unreadCount &&
+                                        <span className="badge">{visitor.unreadCount}</span>
+                                    }
+                                </Link>
+                                :
+                                <Link to='/?media=1' rel="nofollow">
+                                    <Icon name="ei-camera" size="s" />
+                                    <span className="desktop">Photos</span>
+                                </Link>
+                            }
+                            <Link to={{ pathname: '/discover' }} rel="nofollow">
+                                <Icon name="ei-search" size="s" />
+                                <span className="desktop">Discover</span>
+                            </Link>
 
-export default function Header({ children }) {
-    let dHeight = useRef(0);
-    let wHeight = useRef(0);
-    let wScrollCurrent = useRef(0);
-    let wScrollBefore = useRef(0);
-    let wScrollDiff = useRef(0);
-
-    /**
-     * @param {number} delay
-     * @param {{ (): void; apply?: any; }} fn
-     */
-    let throttle = (delay, fn) => {
-        var last, deferTimer;
-        return function () {
-            var context = this, args = arguments, now = +new Date;
-            if (last && now < last + delay) {
-                clearTimeout(deferTimer);
-                deferTimer = setTimeout(
-                    function () {
-                        last = now;
-                        fn.apply(context, args);
-                    },
-                    delay);
-            } else {
-                last = now;
-                fn.apply(context, args);
-            }
-        };
-    };
-    let updateHeader = useCallback(() => {
-        dHeight.current = document.body.offsetHeight;
-        wHeight.current = window.innerHeight;
-        wScrollCurrent.current = window.pageYOffset;
-        wScrollDiff.current = wScrollBefore.current - wScrollCurrent.current;
-
-        if (wScrollCurrent.current <= 0) {
-            // scrolled to the very top; element sticks to the top
-            header.classList.remove(elClassHidden);
-        } else if (wScrollDiff.current > 0 && header.classList.contains(elClassHidden)) {
-            // scrolled up; element slides in
-            header.classList.remove(elClassHidden);
-        } else if (wScrollDiff.current < 0) {
-            // scrolled down
-            if (wScrollCurrent.current + wHeight.current >= dHeight.current && header.classList.contains(elClassHidden)) {
-                // scrolled to the very bottom; element slides in
-                header.classList.remove(elClassHidden);
-            } else {
-                // scrolled down; element slides out
-                header.classList.add(elClassHidden);
-            }
-        }
-        wScrollBefore.current = wScrollCurrent.current;
-    }, []);
-
-    useEffect(() => {
-        window.addEventListener('scroll', () => (!window.requestAnimationFrame)
-            ? throttle(250, updateHeader)
-            : window.requestAnimationFrame(updateHeader), false);
-    }, [updateHeader]);
-    return ReactDOM.createPortal(children, header);
+                            {visitor.uid > 0 ?
+                                <Link to={{ pathname: '/post' }}>
+                                    <Icon name="ei-pencil" size="s" />
+                                    <span className="desktop">Post</span>
+                                </Link>
+                                :
+                                <Link to={{ pathname: '/login', state: { retpath: window.location.pathname } }}>
+                                    <Icon name="ei-user" size="s" />
+                                    <span className="desktop">Login</span>
+                                </Link>
+                            }
+                        </nav>
+                    </>
+                }
+            </div>
+        </div>
+    );
 }
 
-Header.propTypes = {
-    children: PropTypes.node
-};
+export default memo(withRouter(Header));
-- 
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