fix scroll on mobile (#2585)

* fix scrolling issues on mobile

* resolve conflict

web/components/action-buttons/ActionButtonMenu/ActionButtonMenu.tsx

@@ -1,5 +1,6 @@
 import { FC } from 'react';
 import { Button, Dropdown, Menu } from 'antd';
+import classNames from 'classnames';
 import { EllipsisOutlined, HeartOutlined, BellOutlined } from '@ant-design/icons';
 import styles from './ActionButtonMenu.module.scss';
 import { ExternalAction } from '../../../interfaces/external-action';
@@ -14,6 +15,7 @@ export type ActionButtonMenuProps = {
   externalActionSelected: (action: ExternalAction) => void;
   notifyItemSelected: () => void;
   followItemSelected: () => void;
+  className?: string;
 };
 
 export const ActionButtonMenu: FC<ActionButtonMenuProps> = ({
@@ -23,6 +25,7 @@ export const ActionButtonMenu: FC<ActionButtonMenuProps> = ({
   followItemSelected,
   showFollowItem,
   showNotifyItem,
+  className,
 }) => {
   const onMenuClick = a => {
     if (a.key === NOTIFY_KEY) {
@@ -72,8 +75,15 @@ export const ActionButtonMenu: FC<ActionButtonMenuProps> = ({
 
   const menu = <Menu items={items} onClick={onMenuClick} />;
 
+  const dropdownClasses = classNames([styles.menu, className]);
+
   return (
-    <Dropdown overlay={menu} placement="bottomRight" trigger={['click']} className={styles.menu}>
+    <Dropdown
+      overlay={menu}
+      placement="bottomRight"
+      trigger={['click']}
+      className={dropdownClasses}
+    >
       <div className={styles.buttonWrap}>
         <Button
           type="default"

web/components/layouts/Main/Main.module.scss

@@ -0,0 +1,11 @@
+@import '../../../styles/mixins.scss';
+
+.layout {
+  @include screen(tablet) {
+    position: absolute;
+    top: 0;
+    left: 0;
+    bottom: 0;
+    right: 0;
+  }
+}

web/components/layouts/Main/Main.tsx

@@ -3,29 +3,36 @@
 import { useRecoilValue } from 'recoil';
 import Head from 'next/head';
 import { FC, useEffect, useRef } from 'react';
-import { useLockBodyScroll } from 'react-use';
+import { Layout } from 'antd';
 import dynamic from 'next/dynamic';
 import {
   ClientConfigStore,
   isChatAvailableSelector,
   clientConfigStateAtom,
   fatalErrorStateAtom,
-} from '../stores/ClientConfigStore';
-import { Header } from '../ui/Header/Header';
-import { ClientConfig } from '../../interfaces/client-config.model';
-import { DisplayableError } from '../../types/displayable-error';
-import setupNoLinkReferrer from '../../utils/no-link-referrer';
-import { ServerRenderedHydration } from '../ServerRendered/ServerRenderedHydration';
-import { Content } from '../ui/Content/Content';
-import { TitleNotifier } from '../TitleNotifier/TitleNotifier';
-import { PushNotificationServiceWorker } from '../workers/PushNotificationServiceWorker/PushNotificationServiceWorker';
-import { Theme } from '../theme/Theme';
+} from '../../stores/ClientConfigStore';
+import { Content } from '../../ui/Content/Content';
+import { Header } from '../../ui/Header/Header';
+import { ClientConfig } from '../../../interfaces/client-config.model';
+import { DisplayableError } from '../../../types/displayable-error';
+import setupNoLinkReferrer from '../../../utils/no-link-referrer';
+import { TitleNotifier } from '../../TitleNotifier/TitleNotifier';
+import { ServerRenderedHydration } from '../../ServerRendered/ServerRenderedHydration';
+import { Theme } from '../../theme/Theme';
+import styles from './Main.module.scss';
+import { PushNotificationServiceWorker } from '../../workers/PushNotificationServiceWorker/PushNotificationServiceWorker';
+
+const lockBodyStyle = `
+body {
+  overflow: hidden;
+}
+`;
 
 // Lazy loaded components
 
 const FatalErrorStateModal = dynamic(
   () =>
-    import('../modals/FatalErrorStateModal/FatalErrorStateModal').then(
+    import('../../modals/FatalErrorStateModal/FatalErrorStateModal').then(
       mod => mod.FatalErrorStateModal,
     ),
   {
@@ -42,8 +49,6 @@ export const Main: FC = () => {
   const layoutRef = useRef<HTMLDivElement>(null);
   const { chatDisabled } = clientConfig;
 
-  useLockBodyScroll(true);
-
   useEffect(() => {
     setupNoLinkReferrer(layoutRef.current);
   }, []);
@@ -79,7 +84,10 @@ export const Main: FC = () => {
         <meta name="msapplication-TileImage" content="/img/favicon/ms-icon-144x144.png" />
         <meta name="theme-color" content="#ffffff" />
 
-        <style>{customStyles}</style>
+        <style>
+          {customStyles}
+          {lockBodyStyle}
+        </style>
         <base target="_blank" />
       </Head>
 
@@ -125,13 +133,13 @@ export const Main: FC = () => {
       <PushNotificationServiceWorker />
       <TitleNotifier name={name} />
       <Theme />
-      <div ref={layoutRef} style={{ minHeight: '100vh' }}>
+      <Layout ref={layoutRef} className={styles.layout}>
         <Header name={title || name} chatAvailable={isChatAvailable} chatDisabled={chatDisabled} />
         <Content />
         {fatalError && (
           <FatalErrorStateModal title={fatalError.title} message={fatalError.message} />
         )}
-      </div>
+      </Layout>
     </>
   );
 };

web/components/ui/Content/Content.module.scss

@@ -42,13 +42,8 @@
   .lowerSectionMobile {
     display: flex;
     flex-grow: 1;
+    flex-shrink: 0;
     padding: 0.3em;
-    // Enable overflow scrolling within a tab (∩｀-´)⊃━☆ﾟ.*･｡ﾟ
-    height: 100vw;
-  }
-
-  .tabs {
-    width: 100%;
   }
 }
 
@@ -67,3 +62,45 @@
   height: 100%;
   grid-template-rows: 1fr auto;
 }
+
+.replacementBar {
+  display: flex;
+  justify-content: space-between;
+  align-items: start;
+
+  @include screen(tablet) {
+    height: var(--replacement-bar-height);
+  }
+}
+
+.defaultTabBar {
+  width: 85%;
+}
+
+.defaultTabBar,
+.actionButtonMenu {
+  @include screen(tablet) {
+    margin-bottom: 0 !important;
+    padding-bottom: 0 !important;
+  }
+}
+
+.tabs {
+  width: 100%;
+
+  @include screen(tablet) {
+    position: relative;
+    > :global(.ant-tabs-content-holder) {
+      position: absolute;
+      height: calc(100% - var(--replacement-bar-height));
+      top: var(--replacement-bar-height);
+      left: 0;
+      right: 0;
+      bottom: 0;
+    }
+
+    > :global(.ant-tabs-content-holder .ant-tabs-content) {
+      padding-top: 16px;
+    }
+  }
+}

web/components/ui/Content/Content.tsx

@@ -188,9 +188,10 @@ const MobileContent = ({
   ];
 
   const replacementTabBar = (props, DefaultTabBar) => (
-    <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'start' }}>
-      <DefaultTabBar {...props} style={{ width: '85%' }} />
+    <div className={styles.replacementBar}>
+      <DefaultTabBar {...props} className={styles.defaultTabBar} />
       <ActionButtonMenu
+        className={styles.actionButtonMenu}
         showFollowItem={supportFediverseFeatures}
         showNotifyItem={supportsBrowserNotifications}
         actions={actions}

web/pages/index.tsx

@@ -1,5 +1,5 @@
 import { ReactElement } from 'react';
-import { Main } from '../components/layouts/Main';
+import { Main } from '../components/layouts/Main/Main';
 
 export default function Home() {
   return <Main />;

web/styles/globals.scss

@@ -12,6 +12,7 @@
   --header-height: 5.375rem; // needed for making main content scrollable;
   --footer-height: 2.5rem; // needed for making main content scrollable;
   --content-height: calc(100vh - var(--header-height));
+  --replacement-bar-height: 46px; // needed for making main content scrollable on mobile;
 }
 
 ::selection {