From 617f6c7a668af8139377b12079554e6e21e9a637 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Fri, 28 Oct 2022 17:07:27 +0300
Subject: Drop scrolling header

---
 vnext/src/App.js | 51 ++-------------------------------------------------
 1 file changed, 2 insertions(+), 49 deletions(-)

(limited to 'vnext/src')

diff --git a/vnext/src/App.js b/vnext/src/App.js
index c542dec5..e6798b31 100644
--- a/vnext/src/App.js
+++ b/vnext/src/App.js
@@ -1,6 +1,5 @@
 import { useState, useEffect, useRef } from 'react';
 import { Route, Link, Routes } from 'react-router-dom';
-import { useScroll, useRafState } from 'react-use';
 import qs from 'qs';
 
 import svg4everybody from 'svg4everybody';
@@ -20,10 +19,6 @@ import { useCookies } from 'react-cookie';
 
 import { me } from './api';
 
-const elClassHidden = 'header--hidden';
-
-const elClassTop = 'content--top';
-
 /**
  *
  */
@@ -58,48 +53,6 @@ export default function App({ footer }) {
     });
   };
 
-  const [scrollState, setScrollState] = useRafState({
-    hidden: false,
-    top: false,
-    prevScroll: 0
-  });
-
-  let { x, y } = useScroll(contentRef);
-
-  useEffect(() => {
-    let dHeight = contentRef.current.scrollHeight;
-    let wHeight = contentRef.current.clientHeight;
-    setScrollState((scrollState) => {
-      let wScrollDiff = scrollState.prevScroll - y;
-      let hidden = scrollState.hidden;
-      let top = scrollState.top;
-      if (y <= 0) {
-        // scrolled to the very top; element sticks to the top
-        hidden = false;
-        top = true;
-      } else if ((wScrollDiff > 0) && hidden) {
-        // scrolled up; element slides in
-        hidden = false;
-        top = false;
-      } else if (wScrollDiff < 0) {
-        // scrolled down
-        if ((y + wHeight) >= dHeight && hidden) {
-          // scrolled to the very bottom; element slides in
-          hidden = false;
-          top = false;
-        } else {
-          // scrolled down; element slides out
-          hidden = true;
-          top = false;
-        }
-      }
-      return {
-        hidden: hidden,
-        top: top,
-        prevScroll: y
-      };
-    });
-  }, [x, y, setScrollState]);
   const [hash, setHash] = useState(cookie.hash);
 
   const [eventSource, setEventSource] = /** @param EventSource? */ useState({});
@@ -151,7 +104,7 @@ export default function App({ footer }) {
   };
   return (
     <>
-      <Header visitor={visitor} className={scrollState.hidden ? elClassHidden : ''} />
+      <Header visitor={visitor} />
       <div id="content_wrapper">
         {
           <aside id="sidebar">
@@ -185,7 +138,7 @@ export default function App({ footer }) {
             </div>
           </aside>
         }
-        <section id="content" ref={contentRef} className={scrollState.top ? elClassTop : ''}>
+        <section id="content" ref={contentRef}>
           <Routes>
             <Route exact path="/" element={<Discussions visitor={visitor} />} />
             <Route exact path="/home" element={<Home visitor={visitor} />} />
-- 
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